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Subject: Interleukin-23-Expressing Bone Marrow-Derived Neural Stem-Like Cells Exhibit Antitumor Activity against Intracranial Glioma -- Yuan et al. 66 (5): 2630 -- Cancer Research
Date: Wed, 16 Jan 2008 18:50:50 +0100
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            =
href=3D"http://scholar.google.com/scholar?q=3D%22author%3AX.+author%3AYua=
n%22"=20
            target=3D_blank>Articles by Yuan, X.</A></STRONG> </TD></TR>
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            href=3D"http://scholar.google.com/scholar?q=3D%22author%3AJ. =
S.+author%3AYu%22"=20
            target=3D_blank>Articles by Yu, J. S.</A></STRONG> =
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            =
href=3D"http://cancerres.aacrjournals.org/cgi/external_ref?access_num=3Dh=
ttp://cancerres.aacrjournals.org/cgi/content/abstract/66/5/2630&amp;link_=
type=3DGOOGLESCHOLARRELATED"=20
            target=3D_blank>Search for Related Content</A></STRONG> =
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        <TR>
          <TD class=3Dcontent_box_title colSpan=3D2>PubMed</TD></TR>
        <TR>
          <TD class=3Dcontent_box_space_between_sections =
colSpan=3D2><IMG height=3D1=20
            alt=3D" " =
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            =
href=3D"http://cancerres.aacrjournals.org/cgi/external_ref?access_num=3D1=
6510582&amp;link_type=3DPUBMED">PubMed=20
            Citation</A></STRONG> </TD></TR>
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            =
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uan+X&amp;link_type=3DAUTHORSEARCH"=20
            target=3D_blank>Articles by Yuan, X.</A></STRONG> </TD></TR>
        <TR>
          <TD class=3Dcontent_box_arrow vAlign=3Dtop width=3D4><IMG =
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            =
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u+JS&amp;link_type=3DAUTHORSEARCH"=20
            target=3D_blank>Articles by Yu, J. S.</A></STRONG>=20
        =
</TD></TR></TD></TR></TBODY></TABLE></TD></TR></TBODY></TABLE><FONT=20
size=3D-1>[<EM>Cancer Research</EM> 66, 2630-2638, March 1, 2006]<BR>=A9 =
2006 <A=20
href=3D"http://cancerres.aacrjournals.org/misc/terms.shtml">American =
Association=20
for Cancer Research</A> </FONT><BR>
<TABLE cellSpacing=3D0 cellPadding=3D0>
  <TBODY>
  <TR>
    <TD>
      <HR noShade SIZE=3D1>

      <H3>Cell, Tumor, and Stem Cell =
Biology</H3></TD></TR></TBODY></TABLE>
<H2>Interleukin-23=96Expressing Bone Marrow=96Derived Neural Stem-Like =
Cells Exhibit=20
Antitumor Activity against Intracranial Glioma=20
</H2><STRONG></NOBR><NOBR>Xiangpeng Yuan<SUP>1</SUP></NOBR>, =
<NOBR>Jinwei=20
Hu<SUP>1</SUP></NOBR>, <NOBR>Maria L. Belladonna<SUP>2</SUP></NOBR>, =
<NOBR>Keith=20
L. Black<SUP>1</SUP></NOBR> and <NOBR>John S. Yu<SUP>1</SUP></NOBR> =
</STRONG>
<P><FONT size=3D-1><SUP>1</SUP> Maxine Dunitz Neurosurgical Institute,=20
Cedars-Sinai Medical Center, Los Angeles, California and <SUP>2</SUP> =
Department=20
of Experimental Medicine, University of Perugia, Perugia, Italy </FONT>
<P><FONT size=3D-1><B>Requests for reprints:</B> John S. Yu, Maxine =
Dunitz=20
Neurosurgical Institute, Cedars-Sinai Medical Center, Suite 800 East, =
8631 W.=20
3<SUP>rd</SUP> Street, Los Angeles, CA 90048. Phone: 310-423-0845; =
E-mail: <SPAN=20
id=3Dem0>yuj{at}cshs.org</SPAN>
<SCRIPT type=3Dtext/javascript><!--=0A=
 var u =3D "yuj", d =3D "cshs.org"; =
document.getElementById("em0").innerHTML =3D '<a href=3D"mailto:' + u + =
'@' + d + '">' + u + '@' + d + '<\/a>'//--></SCRIPT>
.</FONT>
<P>
<P><A name=3DABS><!-- null --></A><BR clear=3Dright>
<TABLE cellSpacing=3D0 cellPadding=3D0 width=3D"100%" bgColor=3D#e1e1e1>
  <TBODY>
  <TR>
    <TD vAlign=3Dcenter align=3Dleft width=3D"5%" bgColor=3D#ffffff><IMG =
height=3D21=20
      alt=3D" " hspace=3D5=20
      src=3D"http://cancerres.aacrjournals.org/icons/toc/rarrow.gif" =
width=3D10></TD>
    <TH vAlign=3Dcenter align=3Dleft width=3D"95%"><FONT =
size=3D+2>&nbsp;&nbsp;=20
      Abstract </FONT></TH></TR></TBODY></TABLE>
<TABLE cellPadding=3D5 align=3Dright border=3D1>
  <TBODY>
  <TR>
    <TH align=3Dleft><FONT size=3D-1><A=20
      =
href=3D"http://cancerres.aacrjournals.org/cgi/content/full/66/5/2630#top"=
><IMG=20
      height=3D9 alt=3D" " hspace=3D5=20
      src=3D"http://cancerres.aacrjournals.org/icons/toc/uarrow.gif" =
width=3D11=20
      border=3D0>Top<BR></A><IMG height=3D9 alt=3D" " hspace=3D5=20
      src=3D"http://cancerres.aacrjournals.org/icons/toc/dot.gif" =
width=3D11=20
      border=3D0><FONT color=3D#464c53>Abstract</FONT><BR><A=20
      =
href=3D"http://cancerres.aacrjournals.org/cgi/content/full/66/5/2630#SEC1=
"><IMG=20
      height=3D9 alt=3D" " hspace=3D5=20
      src=3D"http://cancerres.aacrjournals.org/icons/toc/darrow.gif" =
width=3D11=20
      border=3D0>Introduction<BR></A><A=20
      =
href=3D"http://cancerres.aacrjournals.org/cgi/content/full/66/5/2630#SEC2=
"><IMG=20
      height=3D9 alt=3D" " hspace=3D5=20
      src=3D"http://cancerres.aacrjournals.org/icons/toc/darrow.gif" =
width=3D11=20
      border=3D0>Materials and Methods<BR></A><A=20
      =
href=3D"http://cancerres.aacrjournals.org/cgi/content/full/66/5/2630#SEC3=
"><IMG=20
      height=3D9 alt=3D" " hspace=3D5=20
      src=3D"http://cancerres.aacrjournals.org/icons/toc/darrow.gif" =
width=3D11=20
      border=3D0>Results<BR></A><A=20
      =
href=3D"http://cancerres.aacrjournals.org/cgi/content/full/66/5/2630#SEC4=
"><IMG=20
      height=3D9 alt=3D" " hspace=3D5=20
      src=3D"http://cancerres.aacrjournals.org/icons/toc/darrow.gif" =
width=3D11=20
      border=3D0>Discussion<BR></A><A=20
      =
href=3D"http://cancerres.aacrjournals.org/cgi/content/full/66/5/2630#BIBL=
"><IMG=20
      height=3D9 alt=3D" " hspace=3D5=20
      src=3D"http://cancerres.aacrjournals.org/icons/toc/darrow.gif" =
width=3D11=20
      =
border=3D0>References<BR></A></FONT></TH></TR></TBODY></TABLE>&nbsp;<BR>N=
eural=20
progenitor-like cells have been isolated from bone marrow<SUP> </SUP>and =
the=20
cells have the ability of tracking intracranial tumor.<SUP> =
</SUP>However, the=20
capacity of the cells to deliver molecules for<SUP> </SUP>activating =
immune=20
response against intracranial tumor and the<SUP> </SUP>identity of =
cellular and=20
molecular factors that are involved<SUP> </SUP>in such immune responses =
have yet=20
to be elucidated. Here, we<SUP> </SUP>isolated neural stem-like cells =
from the=20
bone marrow of adult<SUP> </SUP>mice. The isolated cells were capable of =

producing progenies<SUP> </SUP>of three lineages, neurons, astrocytes, =
and=20
oligodendrocytes,<SUP> </SUP><I>in vitro</I> and tracking glioma <I>in =
vivo</I>.=20
By genetically manipulating<SUP> </SUP>bone marrow=96derived neural =
stem-like=20
cells (BM-NSC) to<SUP> </SUP>express a recently discovered cytokine, =
interleukin=20
(IL)-23,<SUP> </SUP>the cells showed protective effects in intracranial=20
tumor-bearing<SUP> </SUP>C57BL/6 mice. Depletion of subpopulation =
lymphocytes=20
showed<SUP> </SUP>that CD8<SUP>+</SUP> T cells were critical for the =
antitumor=20
immunity of<SUP> </SUP>IL-23=96expressing BM-NSCs and that =
CD4<SUP>+</SUP> T cells=20
and natural<SUP> </SUP>killer (NK) cells participated in the activity.=20
Furthermore,<SUP> </SUP>the IL-23=96expressing BM-NSC-treated survivors =
were=20
resistant<SUP> </SUP>to the same tumor rechallenge associated with =
enhanced=20
IFN-<IMG alt=3D{gamma} =
src=3D"http://cancerres.aacrjournals.org/math/gamma.gif"=20
border=3D0>,<SUP> </SUP>but not IL-17, expression in the brain tissue. =
Taken=20
together,<SUP> </SUP>these data suggest that IL-23=96expressing BM-NSCs =
can=20
effectively<SUP> </SUP>induce antitumor immunity against intracranial =
gliomas.=20
CD8<SUP>+</SUP><SUP> </SUP>T cells are critical for such antitumor =
activity; in=20
addition,<SUP> </SUP>CD4<SUP>+</SUP> T cells and NK cells are also =
involved.=20
(Cancer Res 2006;<SUP> </SUP>66(5): 2630-8)<SUP> </SUP>
<P><A name=3DSEC1><!-- null --></A><BR clear=3Dright>
<TABLE cellSpacing=3D0 cellPadding=3D0 width=3D"100%" bgColor=3D#e1e1e1>
  <TBODY>
  <TR>
    <TD vAlign=3Dcenter align=3Dleft width=3D"5%" bgColor=3D#ffffff><IMG =
height=3D21=20
      alt=3D" " hspace=3D5=20
      src=3D"http://cancerres.aacrjournals.org/icons/toc/rarrow.gif" =
width=3D10></TD>
    <TH vAlign=3Dcenter align=3Dleft width=3D"95%"><FONT =
size=3D+2>&nbsp;&nbsp;=20
      Introduction </FONT></TH></TR></TBODY></TABLE>
<TABLE cellPadding=3D5 align=3Dright border=3D1>
  <TBODY>
  <TR>
    <TH align=3Dleft><FONT size=3D-1><A=20
      =
href=3D"http://cancerres.aacrjournals.org/cgi/content/full/66/5/2630#top"=
><IMG=20
      height=3D9 alt=3D" " hspace=3D5=20
      src=3D"http://cancerres.aacrjournals.org/icons/toc/uarrow.gif" =
width=3D11=20
      border=3D0>Top<BR></A><A=20
      =
href=3D"http://cancerres.aacrjournals.org/cgi/content/full/66/5/2630#ABS"=
><IMG=20
      height=3D9 alt=3D" " hspace=3D5=20
      src=3D"http://cancerres.aacrjournals.org/icons/toc/uarrow.gif" =
width=3D11=20
      border=3D0>Abstract<BR></A><IMG height=3D9 alt=3D" " hspace=3D5=20
      src=3D"http://cancerres.aacrjournals.org/icons/toc/dot.gif" =
width=3D11=20
      border=3D0><FONT color=3D#464c53>Introduction</FONT><BR><A=20
      =
href=3D"http://cancerres.aacrjournals.org/cgi/content/full/66/5/2630#SEC2=
"><IMG=20
      height=3D9 alt=3D" " hspace=3D5=20
      src=3D"http://cancerres.aacrjournals.org/icons/toc/darrow.gif" =
width=3D11=20
      border=3D0>Materials and Methods<BR></A><A=20
      =
href=3D"http://cancerres.aacrjournals.org/cgi/content/full/66/5/2630#SEC3=
"><IMG=20
      height=3D9 alt=3D" " hspace=3D5=20
      src=3D"http://cancerres.aacrjournals.org/icons/toc/darrow.gif" =
width=3D11=20
      border=3D0>Results<BR></A><A=20
      =
href=3D"http://cancerres.aacrjournals.org/cgi/content/full/66/5/2630#SEC4=
"><IMG=20
      height=3D9 alt=3D" " hspace=3D5=20
      src=3D"http://cancerres.aacrjournals.org/icons/toc/darrow.gif" =
width=3D11=20
      border=3D0>Discussion<BR></A><A=20
      =
href=3D"http://cancerres.aacrjournals.org/cgi/content/full/66/5/2630#BIBL=
"><IMG=20
      height=3D9 alt=3D" " hspace=3D5=20
      src=3D"http://cancerres.aacrjournals.org/icons/toc/darrow.gif" =
width=3D11=20
      =
border=3D0>References<BR></A></FONT></TH></TR></TBODY></TABLE>&nbsp;<BR>M=
alignant=20
gliomas represent a significant cause of tumor-related<SUP> =
</SUP>mortality and=20
continue to be associated with poor prognosis<SUP> </SUP>despite =
extensive=20
surgical excision and adjuvant radiotherapy<SUP> </SUP>and chemotherapy =
(<A=20
href=3D"http://cancerres.aacrjournals.org/cgi/content/full/66/5/2630#B1">=
1</A>, <A=20
href=3D"http://cancerres.aacrjournals.org/cgi/content/full/66/5/2630#B2">=
2</A>).=20
Their resistance to treatment is related<SUP> </SUP>to the tumor cell's=20
exceptional migratory nature and ability<SUP> </SUP>to grow extensively =
into=20
normal neural tissue away from the<SUP> </SUP>main tumor mass. These =
cells=20
preclude complete surgical resection<SUP> </SUP>and eventually serve as =
a source=20
for recurrent tumor growth.<SUP> </SUP>It is this characteristic that =
also makes=20
it difficult for otherwise<SUP> </SUP>promising gene therapeutic =
strategies and=20
other local interventions<SUP> </SUP>to efficiently access the tumor =
cells (<A=20
href=3D"http://cancerres.aacrjournals.org/cgi/content/full/66/5/2630#B3">=
3</A>).=20
Recent evidence indicated<SUP> </SUP>a new strategy for targeting tumor =
cells=20
within the central<SUP> </SUP>nervous system by using neural stem cells =
to=20
deliver therapeutic<SUP> </SUP>gene and/or their products efficiently to =
treat=20
brain tumors<SUP> </SUP>(<A=20
href=3D"http://cancerres.aacrjournals.org/cgi/content/full/66/5/2630#B4">=
4</A>=96<A=20
href=3D"http://cancerres.aacrjournals.org/cgi/content/full/66/5/2630#B6">=
6</A>).<SUP>=20
</SUP>
<P>Bone marrow represents an attractive source for generating =
neural<SUP>=20
</SUP>stem cells, which have an advantage over fetal neural stem =
cells,<SUP>=20
</SUP>or allogeneic cell lines as a cellular vehicle for brain =
tumor<SUP>=20
</SUP>therapy because of their autologous characteristic. The bone<SUP>=20
</SUP>marrow=96derived neural stem cells obviate the accessibility<SUP> =
</SUP>and=20
ethical problems associated with fetal neural stem cells<SUP> </SUP>as =
well as=20
potential immunologic incompatibility due to the<SUP> </SUP>requirement =
for=20
allogeneic application (<A=20
href=3D"http://cancerres.aacrjournals.org/cgi/content/full/66/5/2630#B7">=
7</A>=96<A=20
href=3D"http://cancerres.aacrjournals.org/cgi/content/full/66/5/2630#B13"=
>13</A>).=20
In the<SUP> </SUP>present study, we sought to isolate neural stem cells =
from=20
murine<SUP> </SUP>bone marrow as a cellular vehicle for glioma therapy.=20
Using<SUP> </SUP>bone marrow=96derived neural stem-like cells (BM-NSC) =
as<SUP>=20
</SUP>a vehicle, we studied the antiglioma function of a newly =
discovered<SUP>=20
</SUP>cytokine, interleukin (IL)-23, which consists of a =
heterodimer<SUP>=20
</SUP>of IL-12 p40 subunit and a novel protein, p19. It has been =
shown<SUP>=20
</SUP>that IL-23 acts on memory T cells and dendritic cells =
directly<SUP>=20
</SUP>to promote IL-12 and IFN-<IMG alt=3D{gamma}=20
src=3D"http://cancerres.aacrjournals.org/math/gamma.gif" border=3D0> =
production=20
<I>in vitro</I> (<A=20
href=3D"http://cancerres.aacrjournals.org/cgi/content/full/66/5/2630#B14"=
>14</A>,=20
<A=20
href=3D"http://cancerres.aacrjournals.org/cgi/content/full/66/5/2630#B15"=
>15</A>).=20
Recently,<SUP> </SUP>IL-23=96expressing tumor cell showed antitumor and=20
antimetastatic<SUP> </SUP>function (<A=20
href=3D"http://cancerres.aacrjournals.org/cgi/content/full/66/5/2630#B16"=
>16</A>).=20
We showed that neural stem-like cells can be<SUP> </SUP>generated from =
adult=20
bone marrow and the generated BM-NSCs can<SUP> </SUP>track migratory =
glioma=20
cells and deliver IL-23 <I>in situ</I>. IL-23=96expressing<SUP> =
</SUP>BM-NSCs when=20
injected into brain are able to induce tumor-specific<SUP> =
</SUP>antitumor=20
activity and protective immunity against intracranial<SUP> =
</SUP>glioma.<SUP>=20
</SUP>
<P><A name=3DSEC2><!-- null --></A><BR clear=3Dright>
<TABLE cellSpacing=3D0 cellPadding=3D0 width=3D"100%" bgColor=3D#e1e1e1>
  <TBODY>
  <TR>
    <TD vAlign=3Dcenter align=3Dleft width=3D"5%" bgColor=3D#ffffff><IMG =
height=3D21=20
      alt=3D" " hspace=3D5=20
      src=3D"http://cancerres.aacrjournals.org/icons/toc/rarrow.gif" =
width=3D10></TD>
    <TH vAlign=3Dcenter align=3Dleft width=3D"95%"><FONT =
size=3D+2>&nbsp;&nbsp;=20
      Materials and Methods </FONT></TH></TR></TBODY></TABLE>
<TABLE cellPadding=3D5 align=3Dright border=3D1>
  <TBODY>
  <TR>
    <TH align=3Dleft><FONT size=3D-1><A=20
      =
href=3D"http://cancerres.aacrjournals.org/cgi/content/full/66/5/2630#top"=
><IMG=20
      height=3D9 alt=3D" " hspace=3D5=20
      src=3D"http://cancerres.aacrjournals.org/icons/toc/uarrow.gif" =
width=3D11=20
      border=3D0>Top<BR></A><A=20
      =
href=3D"http://cancerres.aacrjournals.org/cgi/content/full/66/5/2630#ABS"=
><IMG=20
      height=3D9 alt=3D" " hspace=3D5=20
      src=3D"http://cancerres.aacrjournals.org/icons/toc/uarrow.gif" =
width=3D11=20
      border=3D0>Abstract<BR></A><A=20
      =
href=3D"http://cancerres.aacrjournals.org/cgi/content/full/66/5/2630#SEC1=
"><IMG=20
      height=3D9 alt=3D" " hspace=3D5=20
      src=3D"http://cancerres.aacrjournals.org/icons/toc/uarrow.gif" =
width=3D11=20
      border=3D0>Introduction<BR></A><IMG height=3D9 alt=3D" " =
hspace=3D5=20
      src=3D"http://cancerres.aacrjournals.org/icons/toc/dot.gif" =
width=3D11=20
      border=3D0><FONT color=3D#464c53>Materials and =
Methods</FONT><BR><A=20
      =
href=3D"http://cancerres.aacrjournals.org/cgi/content/full/66/5/2630#SEC3=
"><IMG=20
      height=3D9 alt=3D" " hspace=3D5=20
      src=3D"http://cancerres.aacrjournals.org/icons/toc/darrow.gif" =
width=3D11=20
      border=3D0>Results<BR></A><A=20
      =
href=3D"http://cancerres.aacrjournals.org/cgi/content/full/66/5/2630#SEC4=
"><IMG=20
      height=3D9 alt=3D" " hspace=3D5=20
      src=3D"http://cancerres.aacrjournals.org/icons/toc/darrow.gif" =
width=3D11=20
      border=3D0>Discussion<BR></A><A=20
      =
href=3D"http://cancerres.aacrjournals.org/cgi/content/full/66/5/2630#BIBL=
"><IMG=20
      height=3D9 alt=3D" " hspace=3D5=20
      src=3D"http://cancerres.aacrjournals.org/icons/toc/darrow.gif" =
width=3D11=20
      =
border=3D0>References<BR></A></FONT></TH></TR></TBODY></TABLE>&nbsp;<BR><=
STRONG>Cell=20
Cultures and Cell Lines</STRONG><BR>Whole bone marrow was harvested from =
the=20
femurs of adult C57BL/6<SUP> </SUP>mice as described previously (<A=20
href=3D"http://cancerres.aacrjournals.org/cgi/content/full/66/5/2630#B11"=
>11</A>).=20
Cells were plated on poly-<FONT size=3D-2>D</FONT>-lysine=96coated<SUP>=20
</SUP>24-well plates (BD Biosciences, San Jose, CA) and cultured in<SUP> =

</SUP>serum-free DMEM/F-12 (Invitrogen, Gaithersburg, MD) =
supplemented<SUP>=20
</SUP>with B27 (Invitrogen), 20 ng/mL basic fibroblast growth =
factor<SUP>=20
</SUP>(Peprotech, Rocky Hill, NJ), and 20 ng/mL epidermal growth =
factor<SUP>=20
</SUP>(Peprotech) along with antibiotics. The cells were plated at<SUP> =
</SUP>a=20
density of 1 <FONT face=3Darial,helvetica>x</FONT> 10<SUP>6</SUP> per =
well. Fetal=20
neural stem cells were<SUP> </SUP>harvested from the frontoparietal =
regions of=20
day 15 fetal C57BL/6<SUP> </SUP>mice as described previously (<A=20
href=3D"http://cancerres.aacrjournals.org/cgi/content/full/66/5/2630#B17"=
>17</A>).=20
The cells were grown in culture<SUP> </SUP>under the same conditions as=20
mentioned above. Spheres, formed<SUP> </SUP>in both bone marrow cell and =
fetal=20
neural stem cell culture,<SUP> </SUP>were processed for =
immunocytochemistry=20
staining. Bone marrow=96derived<SUP> </SUP>spheres were subjected to =
cell=20
differentiation by plating onto<SUP> </SUP>laminin-coated 24-well plates =
in=20
growth medium devoid of growth<SUP> </SUP>factors containing retinoic =
acid (1=20
=B5mol/L, Sigma, St.<SUP> </SUP>Louis, MO) and dibutyryl cyclic AMP (1 =
mmol/L,=20
Sigma). Medium<SUP> </SUP>was replenished every 3 days. Cells were=20
differentiated for<SUP> </SUP>7 to 14 days and processed for =
immunocytochemistry=20
staining.<SUP> </SUP>
<P>NIH-3T3 cells (murine fibroblasts) and GL26 cells (murine =
glioma)<SUP>=20
</SUP>were grown in DMEM and RPMI 1640, respectively, supplemented<SUP>=20
</SUP>with 10% fetal bovine serum, 2 mmol/L <FONT =
size=3D-2>L</FONT>-glutamine,=20
and antibiotics<SUP> </SUP>(all the reagents from Invitrogen). Green =
fluorescent=20
protein<SUP> </SUP>(GFP)=96expressing GL26 cells were derived from =
stable=20
transfection<SUP> </SUP>of GL26 cells with pEGFP-N1 vector (BD =
Biosciences) by=20
calcium<SUP> </SUP>phosphate precipitation method as described =
previously (<A=20
href=3D"http://cancerres.aacrjournals.org/cgi/content/full/66/5/2630#B18"=
>18</A>).<SUP>=20
</SUP>The stable transfectants were selected with geneticin.<SUP> </SUP>
<P><STRONG>Adenoviral Vectors Construction and <I>In vitro</I>=20
Infection</STRONG><BR>The viral vector bearing the gene for murine =
IL-"23=20
(AdIL-23)<SUP> </SUP>was constructed by subcloning the single-chain =
IL-23 cDNA=20
(<A=20
href=3D"http://cancerres.aacrjournals.org/cgi/content/full/66/5/2630#B15"=
>15</A>)<SUP>=20
</SUP>into a shuttle vector pMH5 (Microbix Biosystems, Inc., =
Toronto,<SUP>=20
</SUP>Ontario, Canada) downstream of the mCMV promoter. The =
resultant<SUP>=20
</SUP>shuttle vector was cotransfected with pBHGE3 (Microbix =
Biosystems)<SUP>=20
</SUP>into 293 cells (Microbix Biosystems). Recombinants were =
subsequently<SUP>=20
</SUP>subjected to three rounds of plaque purifications. The =
purified<SUP>=20
</SUP>viral vector was clarified by Southern hybridization and=20
immunocytochemistry<SUP> </SUP>to confirm the bearing of IL-23 =
expression=20
cassette within the<SUP> </SUP>vector genome and the expression of IL-23 =
from=20
the vector transduced<SUP> </SUP>cells, respectively.<A =
name=3DRFN1></A><SUP><A=20
href=3D"http://cancerres.aacrjournals.org/cgi/content/full/66/5/2630#FN1"=
>3</A></SUP>=20
The viral vectors bearing the gene for<SUP> </SUP>LacZ (AdLacZ) or a =
2.4-kb=20
noncoding stuffer DNA (AdEmpty) were<SUP> </SUP>constructed the same way =
as=20
AdIL-23. The construction of IL-12-bearing<SUP> </SUP>vector (AdIL-12) =
was=20
described previously (<A=20
href=3D"http://cancerres.aacrjournals.org/cgi/content/full/66/5/2630#B6">=
6</A>).=20
For <I>in vitro</I><SUP> </SUP>gene transduction, BM-NSCs, fetal neural =
stem=20
cells, and NIH-3T3<SUP> </SUP>cells were infected with 100 =
multiplicities of=20
infection of<SUP> </SUP>AdIL-23, AdEmpty, AdLacZ, and AdIL-12 as =
indicated.=20
Twenty-four<SUP> </SUP>hours after infection, the cells were washed =
thrice with=20
PBS<SUP> </SUP>to ensure that final intracranial injections or <I>in =
vitro</I>=20
analysis<SUP> </SUP>were devoid of free viral particles. NIH-3T3 cells =
were=20
treated<SUP> </SUP>by either mitomycin C (25 mg/mL, Sigma) or =
irradiation=20
(5,000<SUP> </SUP>rads) to induce growth arrest.<SUP> </SUP>
<P><STRONG>Animal Studies <I>In vivo</I></STRONG><BR><B>Intracranial =
tumor=20
implantation.</B> C57BL/6 wild-type mice, athymic<SUP> </SUP>nude mice, =
and CD4=20
T-cell knockout mice (6-8 weeks old, all<SUP> </SUP>from The Jackson =
Laboratory,=20
Bar Harbor, ME) were anesthetized<SUP> </SUP>with i.p. ketamine and =
medetomidine=20
and stereotactically implanted<SUP> </SUP>with 1 <FONT=20
face=3Darial,helvetica>x</FONT> 10<SUP>4</SUP> GL26 cells or =
GFP-expressing GL26=20
glioma cells<SUP> </SUP>in 2.5 =B5L of 1.2% methylcellulose/PBS in the =
right=20
striatum<SUP> </SUP>as described previously (<A=20
href=3D"http://cancerres.aacrjournals.org/cgi/content/full/66/5/2630#B6">=
6</A>).<SUP>=20
</SUP>
<P><B>BM-NSC migration and transgene delivery.</B> To determine =
whether<SUP>=20
</SUP>BM-NSCs were able to track glioma cells, deliver transgenes<SUP> =
</SUP>to=20
tumor targets, and generate progenies of different phenotype,<SUP> =
</SUP>AdLacZ=20
and AdIL-23 infected BM-NSCs (2 <FONT face=3Darial,helvetica>x</FONT>=20
10<SUP>5</SUP> cells) were peritumorally<SUP> </SUP>(1 mm lateral and 3 =
mm=20
behind the tumor implantation site) and<SUP> </SUP>intratumorally (at =
the tumor=20
implantation site) injected into<SUP> </SUP>the brain with a 7-day =
established=20
glioma. Animals were euthanized<SUP> </SUP>on days 12, 24, 28, and 42 =
after the=20
BM-NSC injection by intracordic<SUP> </SUP>perfusion-fixation with 4%=20
paraformaldehyde. Animal brains were<SUP> </SUP>cut into 40-=B5m coral =
sections=20
and processed for immunohistochemistry<SUP> </SUP>staining.<SUP> </SUP>
<P><B>Animal survival and brain tissue evaluation.</B> For C57BL/6 =
mice<SUP>=20
</SUP>survival experiments, the intracranial glioma-bearing mice =
were<SUP>=20
</SUP>randomly divided into four groups 3 days after tumor =
implantation<SUP>=20
</SUP>and treated with intratumoral injections of saline (3 =B5L,<SUP>=20
</SUP><I>n</I> =3D 12), 2 <FONT face=3Darial,helvetica>x</FONT> =
10<SUP>5</SUP>=20
BM-NSCs infected with either AdEmpty (BM-NSC-E,<SUP> </SUP><I>n</I> =3D =
18) or=20
AdIL-23 (BM-NSC-IL-23, <I>n</I> =3D 17), or NIH-3T3 cells<SUP> =
</SUP>infected with=20
AdIL-23 (NIH-3T3-IL-23, <I>n</I> =3D 20) in 3 =B5L<SUP> </SUP>serum-free =
medium.=20
Animals used for histologic evaluation were<SUP> </SUP>treated similarly =
to the=20
survival experiment and euthanized<SUP> </SUP>4 weeks after the BM-NSC=20
injections by intracordic perfusion-fixation<SUP> </SUP>as mentioned =
above.<SUP>=20
</SUP>
<P><B>Depletion of CD4<SUP>+</SUP> and CD8<SUP>+</SUP> T cells and =
natural=20
killer cells.</B><SUP> </SUP>For depletion with monoclonal antibodies =
(mAb),=20
each mouse was<SUP> </SUP>injected i.p. with 0.5 mg rat anti-mouse CD8 =
(53-6.7)=20
and anti-CD4<SUP> </SUP>(GK1.5, both from American Type Culture =
Collection,=20
Manassas,<SUP> </SUP>VA) mAb or normal rat IgG as control antibody in =
200=20
=B5L<SUP> </SUP>PBS 1 day before tumor implantation, once daily for the=20
following<SUP> </SUP>3 consecutive days and then twice weekly. Natural =
killer=20
(NK)<SUP> </SUP>cells were depleted by i.p. injection of 20 =B5L =
rabbit<SUP>=20
</SUP>anti=96asialo GM1 antiserum (Wako Chemicals, Richmond, VA)<SUP> =
</SUP>or=20
normal rabbit serum as control using the same schedule as<SUP> =
</SUP>above.=20
Intracranial tumor-bearing mice with specific cell population<SUP>=20
</SUP>depletion and CD4 T-cell knockout mice with intracranial =
tumor<SUP>=20
</SUP>implantation were treated with either BM-NSC-IL-23 or =
BM-NSC-E<SUP>=20
</SUP>and were followed for survival.<SUP> </SUP>
<P><B>Animal rechallenge.</B> C57BL/6 wild-type mice that survived=20
intracranial<SUP> </SUP>tumor implantation due to BM-NSC-IL-23 treatment =
were=20
rechallenged<SUP> </SUP>with GL26 cells or GL26 cells plus either =
BM-NSC-IL-23=20
or BM-NSC-E.<SUP> </SUP>Age-matched naive mice were challenged as =
control. After=20
the<SUP> </SUP>rechallenge/challenge, animals were followed for =
survival.=20
Some<SUP> </SUP>animals were euthanized on days 1, 3, 5, 7, 10, and 14=20
after<SUP> </SUP>the rechallenge/challenge for reverse transcription PCR =

(RT-PCR)<SUP> </SUP>analysis of the brain tissues. All of the animals =
used=20
were<SUP> </SUP>done in strict accordance with Institutional Animal Care =

and<SUP> </SUP>Use Committee guidelines in force at Cedars-Sinai Medical =

Center.<SUP> </SUP>
<P><STRONG>ELISA and RT-PCR</STRONG><BR>Supernatants from BM-NSCs and =
fetal=20
neural stem cells, which<SUP> </SUP>were infected with AdEmpty, AdIL-12, =
or=20
AdIL-23 for 24 hours,<SUP> </SUP>were analyzed by a sandwich ELISA =
specific for=20
p40 as described<SUP> </SUP>previously (<A=20
href=3D"http://cancerres.aacrjournals.org/cgi/content/full/66/5/2630#B15"=
>15</A>).=20
The cell pellets were subjected to total RNA<SUP> </SUP>extraction with =
a RNeasy=20
Mini kit (Qiagen, Valencia, CA). Brain<SUP> </SUP>tissues from the=20
rechallenged/challenged animals as described<SUP> </SUP>above were =
subjected to=20
total RNA extraction with a RNeasy Lipid<SUP> </SUP>Tissue Mini kit =
(Qiagen).=20
The RNA was reverse transcripted by<SUP> </SUP>using a Bioscript kit =
(Bioline,=20
Randolph, MA) and oligo(dT)<SUB>12-18</SUB><SUP> </SUP>primer =
(Invitrogen). The=20
PCR was carried out in a 20 =B5L<SUP> </SUP>reaction mixture that =
contained 1 =B5L=20
cDNA as template,<SUP> </SUP>specific oligonucleotide primer pairs (<A=20
href=3D"http://cancerres.aacrjournals.org/cgi/content/full/66/5/2630#TBL1=
">Table=20
1</A>), and Accuzyme<SUP> </SUP>(Bioline). Each specific gene was =
concurrently=20
amplified with<SUP> </SUP>internal control =DF-actin in the same =
reaction=20
tube<SUP> </SUP>as described previously (<A=20
href=3D"http://cancerres.aacrjournals.org/cgi/content/full/66/5/2630#B19"=
>19</A>).=20
The amplified products were identified<SUP> </SUP>by agarose gel =
electrophoresis=20
and ethidium bromide staining.<SUP> </SUP>
<P><A name=3DTBL1><!-- null --></A><BR clear=3Dall>
<CENTER>
<TABLE cellSpacing=3D0 cellPadding=3D0 width=3D"95%">
  <TBODY>
  <TR bgColor=3D#e1e1e1>
    <TD>
      <TABLE cellSpacing=3D2 cellPadding=3D2>
        <TBODY>
        <TR bgColor=3D#e1e1e1>
          <TD vAlign=3Dtop align=3Dmiddle bgColor=3D#ffffff><STRONG>View =
this=20
            table:</STRONG><BR><NOBR><A=20
            =
href=3D"http://cancerres.aacrjournals.org/cgi/content/full/66/5/2630/TBL1=
">[in=20
            this window]</A><BR><A=20
            onmouseover=3D"window.status=3D'View table in a separate =
window'; return true"=20
            onclick=3D"startTarget('TBL1', 500, 400); =
this.href=3D'/cgi/content-nw/full/66/5/2630/TBL1'"=20
            =
href=3D"http://cancerres.aacrjournals.org/cgi/content-nw/full/66/5/2630/T=
BL1"=20
            target=3DTBL1>[in a new window]</A><BR>&nbsp;</NOBR> </TD>
          <TD vAlign=3Dtop align=3Dleft><B>Table 1.</B> Oligonucleotides =
for PCR
            =
<P></P></TD></TR></TBODY></TABLE></TD></TR></TBODY></TABLE></CENTER>&nbsp=
;<BR><STRONG>Relative=20
Quantitative Real-Time PCR</STRONG><BR>Total RNA isolation and cDNA =
preparation=20
were done as described<SUP> </SUP>above. Detection of IFN-<IMG =
alt=3D{gamma}=20
src=3D"http://cancerres.aacrjournals.org/math/gamma.gif" border=3D0> =
mRNA level was=20
done by a real-time<SUP> </SUP>PCR assay using the iCycler iQ system =
(Bio-Rad=20
Laboratories,<SUP> </SUP>Hercules, CA). A 12.5 =B5L reaction mixture =
containing=20
1<SUP> </SUP>=B5L cDNA and 200 nmol/L of each primer was mixed with =
12.5<SUP>=20
</SUP>=B5L of 2<FONT face=3Darial,helvetica>x</FONT> iQ SYBR Green =
Supermix (Bio-Rad=20
Laboratories).<SUP> </SUP>The reaction conditions were designed as =
follows: 95=B0C=20
for<SUP> </SUP>3 minutes to activate the iTaq DNA polymerase followed by =
40<SUP>=20
</SUP>cycles with 30 seconds at 95=B0C and 30 seconds at 60=B0C.<SUP> =
</SUP>PCR=20
amplification of the endogenous =DF-actin was done<SUP> </SUP>for each =
sample to=20
control for sample loading and to allow normalization<SUP> </SUP>between =

samples. The threshold cycle (Ct; the cycle number at<SUP> </SUP>which =
the=20
amount of amplified gene of interest reached a fixed<SUP> =
</SUP>threshold) was=20
determined subsequently. Each data point was<SUP> </SUP>examined for =
integrity=20
by analysis of the amplification plot<SUP> </SUP>and disassociation =
curves. All=20
amplifications were conducted<SUP> </SUP>in triplicates. The relative=20
quantitation of IFN-<IMG alt=3D{gamma}=20
src=3D"http://cancerres.aacrjournals.org/math/gamma.gif" border=3D0> =
mRNA=20
expression<SUP> </SUP>was calculated by the comparative Ct method. The =
relative=20
quantitation<SUP> </SUP>value of target, normalized to endogenous =
control=20
=DF-actin<SUP> </SUP>and relative to a calibrator, is calculated as =
follow:=20
fold<SUP> </SUP>increased =3D 2<SUP>=96[<IMG alt=3D{Delta}=20
src=3D"http://cancerres.aacrjournals.org/math/Delta.gif" border=3D0>Ct =
(survived=20
animal) =96 <IMG alt=3D{Delta}=20
src=3D"http://cancerres.aacrjournals.org/math/Delta.gif" border=3D0>Ct =
(naive<SUP>=20
</SUP>animal)]</SUP>, where <IMG alt=3D{Delta}=20
src=3D"http://cancerres.aacrjournals.org/math/Delta.gif" border=3D0>Ct =
=3D Ct=20
(IFN-<IMG alt=3D{gamma} =
src=3D"http://cancerres.aacrjournals.org/math/gamma.gif"=20
border=3D0>) =96 Ct (=DF-actin).<SUP> </SUP>
<P><STRONG>Cytotoxicity Assays</STRONG><BR>Spleen cells were harvested =
from each=20
mouse. The harvested cells<SUP> </SUP>(5 <FONT =
face=3Darial,helvetica>x</FONT>=20
10<SUP>6</SUP>/mL) were restimulated <I>in vitro</I> by coculture with=20
mitomycin<SUP> </SUP>C=96treated GL26 cells (5 <FONT =
face=3Darial,helvetica>x</FONT>=20
10<SUP>5</SUP>/mL) for 5 days and used<SUP> </SUP>as effector cells in a =
lactate=20
dehydrogenase release assay.<SUP> </SUP>GL26 parental tumor cells or =
p815 cells=20
(1 <FONT face=3Darial,helvetica>x</FONT> 10<SUP>4</SUP>/well) and =
serial<SUP>=20
</SUP>dilutions of effector cells were incubated in a 96-well =
U-bottomed<SUP>=20
</SUP>plate at 37=B0C for 5 hours. Supernatants then were analyzed<SUP> =
</SUP>with=20
a cytotoxicity detection kit (Roche Applied Science, Indianapolis,<SUP>=20
</SUP>IN) according to the manufacturer's instructions. Results =
were<SUP>=20
</SUP>expressed as the percentage of specific lysis.<SUP> </SUP>
<P><STRONG>H&amp;E, Luxol Fast Blue, and Immunohistochemistry Staining =
of Brain=20
Sections</STRONG><BR>The perfusion-fixed brains were cut into 10-=B5m =
coronal<SUP>=20
</SUP>sections and stained with either H&amp;E or luxol fast blue<SUP> =
</SUP>as=20
per standard protocol. To characterize the brain tissue by<SUP>=20
</SUP>immunohistochemistry, free-floating 40-=B5m sections were<SUP> =
</SUP>treated=20
with 10% donkey serum (Sigma) for 30 minutes at room<SUP> =
</SUP>temperature and=20
then stained with primary antibodies for anti-=DF-galactosidase<SUP> =
</SUP>protein=20
(mouse mAb, 1:1,000, Promega, Madison, WI), anti-p40<SUP> </SUP>subunit =
of=20
murine IL-23 (mouse mAb, 1:50, BD Biosciences), anti=96=DF-tubulin<SUP> =
</SUP>III=20
(TuJ1, mouse mAb, 1:200, Chemicon, Temecula, CA), anti=96glial<SUP>=20
</SUP>fibrillary acidic protein (GFAP; rabbit polyclonal, 1:1,000,<SUP>=20
</SUP>Chemicon), anti-myelin/oligodendrocyte (mouse mAb, 1:1,000,<SUP>=20
</SUP>Chemicon), anti-F4/80 (rat mAb, 1:50, Serotec, Raleigh, NC),<SUP>=20
</SUP>anti-CD4 (rat mAb, 1:50, BD Biosciences), anti-CD8 (rat mAb,<SUP>=20
</SUP>1:100, BD Biosciences), and isotype control antibodies. The<SUP>=20
</SUP>primary antibodies were detected with either Texas =
red=96conjugated<SUP>=20
</SUP>donkey anti-mouse, anti-rat IgG (1:200, The Jackson =
Laboratory)<SUP>=20
</SUP>before mounting the sections or Vector Elite ABC kit (Vector<SUP>=20
</SUP>Laboratories, Burlingame, CA) and developed with =
diaminobenzidine<SUP>=20
</SUP>(Sigma) and counterstained with hematoxylin before mounting<SUP> =
</SUP>the=20
sections.<SUP> </SUP>
<P><A name=3DSEC3><!-- null --></A><BR clear=3Dright>
<TABLE cellSpacing=3D0 cellPadding=3D0 width=3D"100%" bgColor=3D#e1e1e1>
  <TBODY>
  <TR>
    <TD vAlign=3Dcenter align=3Dleft width=3D"5%" bgColor=3D#ffffff><IMG =
height=3D21=20
      alt=3D" " hspace=3D5=20
      src=3D"http://cancerres.aacrjournals.org/icons/toc/rarrow.gif" =
width=3D10></TD>
    <TH vAlign=3Dcenter align=3Dleft width=3D"95%"><FONT =
size=3D+2>&nbsp;&nbsp;=20
      Results </FONT></TH></TR></TBODY></TABLE>
<TABLE cellPadding=3D5 align=3Dright border=3D1>
  <TBODY>
  <TR>
    <TH align=3Dleft><FONT size=3D-1><A=20
      =
href=3D"http://cancerres.aacrjournals.org/cgi/content/full/66/5/2630#top"=
><IMG=20
      height=3D9 alt=3D" " hspace=3D5=20
      src=3D"http://cancerres.aacrjournals.org/icons/toc/uarrow.gif" =
width=3D11=20
      border=3D0>Top<BR></A><A=20
      =
href=3D"http://cancerres.aacrjournals.org/cgi/content/full/66/5/2630#ABS"=
><IMG=20
      height=3D9 alt=3D" " hspace=3D5=20
      src=3D"http://cancerres.aacrjournals.org/icons/toc/uarrow.gif" =
width=3D11=20
      border=3D0>Abstract<BR></A><A=20
      =
href=3D"http://cancerres.aacrjournals.org/cgi/content/full/66/5/2630#SEC1=
"><IMG=20
      height=3D9 alt=3D" " hspace=3D5=20
      src=3D"http://cancerres.aacrjournals.org/icons/toc/uarrow.gif" =
width=3D11=20
      border=3D0>Introduction<BR></A><A=20
      =
href=3D"http://cancerres.aacrjournals.org/cgi/content/full/66/5/2630#SEC2=
"><IMG=20
      height=3D9 alt=3D" " hspace=3D5=20
      src=3D"http://cancerres.aacrjournals.org/icons/toc/uarrow.gif" =
width=3D11=20
      border=3D0>Materials and Methods<BR></A><IMG height=3D9 alt=3D" " =
hspace=3D5=20
      src=3D"http://cancerres.aacrjournals.org/icons/toc/dot.gif" =
width=3D11=20
      border=3D0><FONT color=3D#464c53>Results</FONT><BR><A=20
      =
href=3D"http://cancerres.aacrjournals.org/cgi/content/full/66/5/2630#SEC4=
"><IMG=20
      height=3D9 alt=3D" " hspace=3D5=20
      src=3D"http://cancerres.aacrjournals.org/icons/toc/darrow.gif" =
width=3D11=20
      border=3D0>Discussion<BR></A><A=20
      =
href=3D"http://cancerres.aacrjournals.org/cgi/content/full/66/5/2630#BIBL=
"><IMG=20
      height=3D9 alt=3D" " hspace=3D5=20
      src=3D"http://cancerres.aacrjournals.org/icons/toc/darrow.gif" =
width=3D11=20
      =
border=3D0>References<BR></A></FONT></TH></TR></TBODY></TABLE>&nbsp;<BR><=
B>Neural=20
stem-like cells can be generated from adult mouse bone<SUP> =
</SUP>marrow.</B> We=20
harvested adult mouse whole bone marrow cells and<SUP> </SUP>cultured =
the cells=20
under the conditions described previously<SUP> </SUP>that are permissive =
for=20
neural stem cells (<A=20
href=3D"http://cancerres.aacrjournals.org/cgi/content/full/66/5/2630#B11"=
>11</A>,=20
<A=20
href=3D"http://cancerres.aacrjournals.org/cgi/content/full/66/5/2630#B20"=
>20</A>).=20
Free floating<SUP> </SUP>spheres were formed after 8 to 12 days of =
culture.=20
These bone<SUP> </SUP>marrow=96derived spheres were morphologically=20
indistinguishable<SUP> </SUP>from the neurospheres of fetal brain neural =
stem=20
cells and were<SUP> </SUP>stained positive for the neural stem cell =
marker,=20
nestin (<A=20
href=3D"http://cancerres.aacrjournals.org/cgi/content/full/66/5/2630#FIG1=
">Fig.<SUP>=20
</SUP>1<I>A</I></A>). Upon being switched into differentiation =
conditions (<A=20
href=3D"http://cancerres.aacrjournals.org/cgi/content/full/66/5/2630#B11"=
>11</A>),<SUP>=20
</SUP>the spheres attached and spread out. After 7 to 14 days of =
<I>in<SUP>=20
</SUP>vitro</I> differentiation, we analyzed the culture for cells=20
expressing<SUP> </SUP>neural and glial markers. TuJ1-positive =
(neuron-specific=20
=DF-tubulin<SUP> </SUP>III), GFAP-positive (astrocyte marker), and=20
myelin/oligodendrocyte-positive<SUP> </SUP>(oligodendrocyte marker) =
cells were=20
clearly identified in the<SUP> </SUP>differentiated progenies of the =
bone=20
marrow=96derived spheres<SUP> </SUP>(<A=20
href=3D"http://cancerres.aacrjournals.org/cgi/content/full/66/5/2630#FIG1=
">Fig.=20
1<I>B</I></A>).<SUP> </SUP>
<P><A name=3DFIG1><!-- null --></A><BR clear=3Dall>
<CENTER>
<TABLE cellSpacing=3D0 cellPadding=3D0 width=3D"95%">
  <TBODY>
  <TR bgColor=3D#e1e1e1>
    <TD>
      <TABLE cellSpacing=3D2 cellPadding=3D2>
        <TBODY>
        <TR bgColor=3D#e1e1e1>
          <TD vAlign=3Dtop align=3Dmiddle bgColor=3D#ffffff><A=20
            =
href=3D"http://cancerres.aacrjournals.org/cgi/content/full/66/5/2630/FIG1=
"><IMG=20
            height=3D146 alt=3D"Figure 1" hspace=3D10=20
            =
src=3D"http://cancerres.aacrjournals.org/content/vol66/issue5/images/smal=
l/2630fig01c.gif"=20
            width=3D200 vspace=3D5 border=3D2></A><BR><STRONG>View =
larger=20
            version</STRONG> (35K):<BR><NOBR><A=20
            =
href=3D"http://cancerres.aacrjournals.org/cgi/content/full/66/5/2630/FIG1=
">[in=20
            this window]</A><BR><A=20
            onmouseover=3D"window.status=3D'View figure in a separate =
window'; return true"=20
            onclick=3D"startTarget('FIG1', 590, 522); =
this.href=3D'/cgi/content-nw/full/66/5/2630/FIG1'"=20
            =
href=3D"http://cancerres.aacrjournals.org/cgi/content-nw/full/66/5/2630/F=
IG1"=20
            target=3DFIG1>[in a new window]</A><BR>&nbsp;</NOBR> </TD>
          <TD vAlign=3Dtop align=3Dleft><B>Figure 1.</B> Generation of =
neural=20
            stem-like cells from adult mouse bone marrow. <I>A,</I> =
neurospheres=20
            were formed within the culture of adult mouse bone marrow =
cells=20
            (<I>a</I>). The formed spheres were self-renewing in the=20
            free-floating pattern (<I>b</I>), morphologically =
indistinguishable=20
            from the neurospheres of fetal neural stem cells (<I>c</I>), =
and=20
            expressed a similar pattern of nestin (<I>d</I>) as that =
expressed=20
            by fetal neural stem cells (<I>e</I>). <I>B,</I> bone =
marrow=96derived=20
            spheres were able to differentiate into =DF-tubulin =
III=96expressing=20
            neurons (<I>a</I>), GFAP-expressing astrocytes (<I>b</I>), =
and=20
            myelin/oligodendrocyte marker=96expressing oligodendrocytes=20
            (<I>c</I>). Bar, 50 =B5m.
            =
<P></P></TD></TR></TBODY></TABLE></TD></TR></TBODY></TABLE></CENTER>&nbsp=
;<BR><B>BM-NSCs=20
can track intracranial tumors and express transgene<SUP> </SUP>both =
<I>in=20
vitro</I> and <I>in vivo</I>.</B> We sought to determine whether =
bone<SUP>=20
</SUP>marrow=96derived sphere cells have migratory properties<SUP> =
</SUP>similar=20
to that of fetal neural stem cells (<A=20
href=3D"http://cancerres.aacrjournals.org/cgi/content/full/66/5/2630#B4">=
4</A>=96<A=20
href=3D"http://cancerres.aacrjournals.org/cgi/content/full/66/5/2630#B6">=
6</A>).=20
To investigate<SUP> </SUP>their ability to migrate toward intracranial =
gliomas,=20
the bone<SUP> </SUP>marrow=96derived sphere cells were transduced with =
AdLacZ<SUP>=20
</SUP>and injected intratumorally or peritumorally (at a site =
distant<SUP>=20
</SUP>from the tumor bed) into mouse brain harboring an established<SUP> =

</SUP>glioma. The AdLacZ transduced cells migrated into the tumor<SUP>=20
</SUP>mass (<A=20
href=3D"http://cancerres.aacrjournals.org/cgi/content/full/66/5/2630#FIG2=
">Fig.=20
2<I>A, a</I></A>) or tumor "satellite," which was away from<SUP> =
</SUP>the main=20
tumor mass (<A=20
href=3D"http://cancerres.aacrjournals.org/cgi/content/full/66/5/2630#FIG2=
">Fig.=20
2<I>A, b</I></A>). Some =DF-galactosidase-positive<SUP> </SUP>cells were =
seen in=20
immediate proximity to and intermixed with<SUP> </SUP>invading tumor =
"islands"=20
(<A=20
href=3D"http://cancerres.aacrjournals.org/cgi/content/full/66/5/2630#FIG2=
">Fig.=20
2<I>A, c, arrow</I></A>). Based on the above<SUP> </SUP>characteristics, =
the=20
sphere cells were named BM-NSCs. To test<SUP> </SUP>the ability to =
express=20
transgenes, the BM-NSCs were transduced<SUP> </SUP>with adenoviral =
vectors=20
carrying either stuffer DNA, IL-12,<SUP> </SUP>or single-chain IL-23. In =

parallel, fetal neural stem cells<SUP> </SUP>were also transduced as =
controls.=20
After 24 hours, the transduced<SUP> </SUP>cells and conditioned medium =
were=20
harvested for mRNA analysis<SUP> </SUP>and protein assay, respectively. =
One=20
subunit of IL-23, p19,<SUP> </SUP>was detected as mRNA in both BM-NSC =
and fetal=20
neural stem cell<SUP> </SUP>lysate by RT-PCR (<A=20
href=3D"http://cancerres.aacrjournals.org/cgi/content/full/66/5/2630#FIG2=
">Fig.=20
2<I>B, a</I></A>). Another subunit of IL-23 and<SUP> </SUP>of IL-12, =
p40, was=20
detected in the protein format by ELISA in<SUP> </SUP>the conditioned =
medium (<A=20
href=3D"http://cancerres.aacrjournals.org/cgi/content/full/66/5/2630#FIG2=
">Fig.=20
2<I>B, b</I></A>). The mRNA of p19 and the<SUP> </SUP>protein of p40 =
were=20
similarly expressed by both BM-NSCs and<SUP> </SUP>fetal neural stem =
cells after=20
the adenoviral vectors transduction.<SUP> </SUP>To test their ability to =

delivery transgene <I>in vivo</I>, the BM-NSCs<SUP> </SUP>transduced =
with=20
AdIL-23 were injected into tumor-bearing mice<SUP> </SUP>brain. The p40=20
expression was detected both in and around the<SUP> </SUP>tumor mass (<A =

href=3D"http://cancerres.aacrjournals.org/cgi/content/full/66/5/2630#FIG2=
">Fig.=20
2<I>C</I></A>). To examine the phenotype of BM-NSCs after<SUP>=20
</SUP>intracranial implantation, brain sections were double stained<SUP> =

</SUP>with anti-=DF-galactosidase or anti-p40 antibodies together<SUP> =
</SUP>with=20
cell type=96specific markers. The implanted cells were<SUP> =
</SUP>differentiated=20
into positive staining of TuJ1, myelin/oligodendrocyte,<SUP> </SUP>or =
GFAP.=20
There were no F4/80 (specific for macrophage)=96positive<SUP> =
</SUP>cells noted=20
(<A=20
href=3D"http://cancerres.aacrjournals.org/cgi/content/full/66/5/2630#FIG3=
">Fig.=20
3</A>). Taken together, these data suggest that<SUP> </SUP>BM-NSCs have =
the=20
ability to track glioma cells <I>in vivo</I>, to express<SUP> =
</SUP>transgenes=20
both <I>in vitro</I> and <I>in vivo</I> after transduction with<SUP>=20
</SUP>adenoviral vectors, and to differentiate into the neural cell<SUP> =

</SUP>types of the central nervous system.<SUP> </SUP>
<P><A name=3DFIG2><!-- null --></A><BR clear=3Dall>
<CENTER>
<TABLE cellSpacing=3D0 cellPadding=3D0 width=3D"95%">
  <TBODY>
  <TR bgColor=3D#e1e1e1>
    <TD>
      <TABLE cellSpacing=3D2 cellPadding=3D2>
        <TBODY>
        <TR bgColor=3D#e1e1e1>
          <TD vAlign=3Dtop align=3Dmiddle bgColor=3D#ffffff><A=20
            =
href=3D"http://cancerres.aacrjournals.org/cgi/content/full/66/5/2630/FIG2=
"><IMG=20
            height=3D200 alt=3D"Figure 2" hspace=3D10=20
            =
src=3D"http://cancerres.aacrjournals.org/content/vol66/issue5/images/smal=
l/2630fig02c.gif"=20
            width=3D146 vspace=3D5 border=3D2></A><BR><STRONG>View =
larger=20
            version</STRONG> (65K):<BR><NOBR><A=20
            =
href=3D"http://cancerres.aacrjournals.org/cgi/content/full/66/5/2630/FIG2=
">[in=20
            this window]</A><BR><A=20
            onmouseover=3D"window.status=3D'View figure in a separate =
window'; return true"=20
            onclick=3D"startTarget('FIG2', 471, 640); =
this.href=3D'/cgi/content-nw/full/66/5/2630/FIG2'"=20
            =
href=3D"http://cancerres.aacrjournals.org/cgi/content-nw/full/66/5/2630/F=
IG2"=20
            target=3DFIG2>[in a new window]</A><BR>&nbsp;</NOBR> </TD>
          <TD vAlign=3Dtop align=3Dleft><B>Figure 2.</B> BM-NSCs =
displayed strong=20
            tropism for intracranial gliomas and were able to express =
transgenes=20
            after transduction with adenoviral vectors. <I>A,</I> =
BM-NSCs=20
            (<I>red</I>) distributed throughout the intracranial tumor =
mass=20
            (<I>green</I>) and intermingled among green tumor cells =
after=20
            peritumoral implantation into brain (<I>a</I>). BM-NSCs =
migrated=20
            away from the main tumor mass to a tumor satellite following =

            intratumoral implantation (<I>b</I>), and BM-NSCs were also =
seen in=20
            the immediate proximity to and intermixed with an invading =
tumor=20
            island deep into normal neural tissue (<I>c</I>). The =
BM-NSCs were=20
            identified by immunohistochemistry as =
=DF-galactosidase-positive cells=20
            (<I>red</I>) due to AdLacZ vector transduction before the =
cells were=20
            implanted. Tumor cells were GFP stably transfected =
(<I>green</I>).=20
            <I>Arrowheads,</I> tumor edge; <I>arrow,</I> tumor island. =
Bar, 100=20
            =B5m. <I>B,</I> BM-NSCs transduced by adenoviral vectors to =
express=20
            transgenes <I>in vitro</I>. BM-NSCs and fetal neural stem =
cells were=20
            transduced by AdEmpty (<I>E</I>), AdIL-23 (<I>23</I>), and =
AdIL-12=20
            (<I>12</I>), respectively. BM-NSCs were capable of =
expressing=20
            transgene with a similar pattern as that of fetal neural =
stem cells,=20
            which were verified with either RT-PCR to amplify the p19 =
subunit of=20
            IL-23 (<I>a</I>) or ELISA to detect the p40 subunit of IL-23 =
and=20
            IL-12 (<I>b</I>). <I>Columns,</I> mean of triplicate =
determinations;=20
            <I>bars,</I> SD. <I>ND,</I> not detected. <I>C,</I> BM-NSC, =
as a=20
            tumor-targeting cellular vehicle, delivered transgene into=20
            intracranial tumor. After BM-NSCs were transduced with =
AdIL-23, when=20
            implanted into brain, the cells were able to deliver the =
transgene=20
            into glioma as identified by immunohistochemistry staining =
of p40 in=20
            both wild-type C57BL/6 mice (<I>a</I> and <I>b</I>) and =
athymic nude=20
            mice (<I>c</I> and <I>d</I>) intracranial tumor models. =
Isotype=20
            control antibody was stained negative for both wild-type =
mice=20
            (<I>e</I> and <I>f</I>) and athymic nude mice (<I>g</I> and=20
            <I>h</I>). Bar, 100 =B5m.
            =
<P></P></TD></TR></TBODY></TABLE></TD></TR></TBODY></TABLE></CENTER>&nbsp=
;<BR><A=20
name=3DFIG3><!-- null --></A><BR clear=3Dall>
<CENTER>
<TABLE cellSpacing=3D0 cellPadding=3D0 width=3D"95%">
  <TBODY>
  <TR bgColor=3D#e1e1e1>
    <TD>
      <TABLE cellSpacing=3D2 cellPadding=3D2>
        <TBODY>
        <TR bgColor=3D#e1e1e1>
          <TD vAlign=3Dtop align=3Dmiddle bgColor=3D#ffffff><A=20
            =
href=3D"http://cancerres.aacrjournals.org/cgi/content/full/66/5/2630/FIG3=
"><IMG=20
            height=3D200 alt=3D"Figure 3" hspace=3D10=20
            =
src=3D"http://cancerres.aacrjournals.org/content/vol66/issue5/images/smal=
l/2630fig03c.gif"=20
            width=3D200 vspace=3D5 border=3D2></A><BR><STRONG>View =
larger=20
            version</STRONG> (47K):<BR><NOBR><A=20
            =
href=3D"http://cancerres.aacrjournals.org/cgi/content/full/66/5/2630/FIG3=
">[in=20
            this window]</A><BR><A=20
            onmouseover=3D"window.status=3D'View figure in a separate =
window'; return true"=20
            onclick=3D"startTarget('FIG3', 590, 640); =
this.href=3D'/cgi/content-nw/full/66/5/2630/FIG3'"=20
            =
href=3D"http://cancerres.aacrjournals.org/cgi/content-nw/full/66/5/2630/F=
IG3"=20
            target=3DFIG3>[in a new window]</A><BR>&nbsp;</NOBR> </TD>
          <TD vAlign=3Dtop align=3Dleft><B>Figure 3.</B> <I>In vivo</I>=20
            differentiation of intracranial implantation of BM-NSCs. =
BM-NSCs=20
            transduced by AdIL-23 <I>in vitro</I> were intracranially =
implanted=20
            into mice bearing experimental brain tumor. The transplanted =
BM-NSCs=20
            (<I>green</I>) were identified within the brain (<I>A, E, =
I</I>, and=20
            <I>M</I>). The cells (<I>red</I>) showed neural =
differentiation as=20
            stained positive for Tuj1 (<I>B-D</I>), oligodendroglial=20
            differentiation as stained by =
myelin/oligodendrocyte-specific=20
            antibody (<I>F-H</I>), and astrocytic differentiation as =
identified=20
            by GFAP antibody (<I>J-L</I>). Macrophage marker-positive =
cell was=20
            not found in the implanted BM-NSC (<I>N-P</I>). The sections =
were=20
            labeled also with 4',6-diamidino-2-phenylindole =
(<I>blue</I>) to=20
            identify nuclei (<I>D, H, L</I>, and <I>P</I>). Bar, 100 =
=B5m.
            =
<P></P></TD></TR></TBODY></TABLE></TD></TR></TBODY></TABLE></CENTER>&nbsp=
;<BR><B>Intracranial=20
tumor-bearing C57BL/6 mice show prolonged survival<SUP> </SUP>after=20
IL-23=96expressing BM-NSC treatment.</B> To determine<SUP> </SUP>whether =
the=20
IL-23=96expressing BM-NSCs provided a therapeutic<SUP> </SUP>benefit for =
brain=20
tumor, we delivered BM-NSCs transduced with<SUP> </SUP>AdIL-23 or =
AdEmpty or=20
delivered NIH-3T3 cells transduced with<SUP> </SUP>AdIL-23 into =
established=20
intracranial gliomas in C57BL/6 mice.<SUP> </SUP>BM-NSC-IL-23=96treated =
mice=20
showed significantly prolonged<SUP> </SUP>survival compared with mice =
treated by=20
BM-NSC-E (<A=20
href=3D"http://cancerres.aacrjournals.org/cgi/content/full/66/5/2630#FIG4=
">Fig.=20
4<I>A</I></A>). Approximately<SUP> </SUP>60% of the =
BM-NSC-IL-23=96treated mice=20
survived beyond day<SUP> </SUP>120 with tumor-free condition, which was =
verified=20
by histology<SUP> </SUP>staining of the brain sections. Only 20% of the=20
NIH-3T3-IL-23=96treated<SUP> </SUP>mice survived. BM-NSC-E treatment was =
not=20
protective and had<SUP> </SUP>the same "effect" as the saline control =
treatment.=20
Statistical<SUP> </SUP>analysis revealed that the effects of both =
BM-NSC-IL-23=20
and<SUP> </SUP>NIH-3T3-IL-23 were significantly different from that of =
the<SUP>=20
</SUP>BM-NSC-E (<I>P</I> &lt; 0.001, BM-NSC-IL-23 versus BM-NSC-E; =
<I>P</I> =3D=20
0.0018,<SUP> </SUP>NIH-3T3-IL-23 versus BM-NSC-E, log rank). There was =
also a=20
significant<SUP> </SUP>difference in effect between BM-NSC-IL-23 and=20
NIH-3T3-IL-23<SUP> </SUP>(<I>P</I> =3D 0.0310, log rank).<SUP> </SUP>
<P><A name=3DFIG4><!-- null --></A><BR clear=3Dall>
<CENTER>
<TABLE cellSpacing=3D0 cellPadding=3D0 width=3D"95%">
  <TBODY>
  <TR bgColor=3D#e1e1e1>
    <TD>
      <TABLE cellSpacing=3D2 cellPadding=3D2>
        <TBODY>
        <TR bgColor=3D#e1e1e1>
          <TD vAlign=3Dtop align=3Dmiddle bgColor=3D#ffffff><A=20
            =
href=3D"http://cancerres.aacrjournals.org/cgi/content/full/66/5/2630/FIG4=
"><IMG=20
            height=3D200 alt=3D"Figure 4" hspace=3D10=20
            =
src=3D"http://cancerres.aacrjournals.org/content/vol66/issue5/images/smal=
l/2630fig04c.gif"=20
            width=3D99 vspace=3D5 border=3D2></A><BR><STRONG>View larger =

            version</STRONG> (56K):<BR><NOBR><A=20
            =
href=3D"http://cancerres.aacrjournals.org/cgi/content/full/66/5/2630/FIG4=
">[in=20
            this window]</A><BR><A=20
            onmouseover=3D"window.status=3D'View figure in a separate =
window'; return true"=20
            onclick=3D"startTarget('FIG4', 368, 640); =
this.href=3D'/cgi/content-nw/full/66/5/2630/FIG4'"=20
            =
href=3D"http://cancerres.aacrjournals.org/cgi/content-nw/full/66/5/2630/F=
IG4"=20
            target=3DFIG4>[in a new window]</A><BR>&nbsp;</NOBR> </TD>
          <TD vAlign=3Dtop align=3Dleft><B>Figure 4.</B> Effect of=20
            IL-23=96expressing BM-NSCs on the experimental glioma in =
C57BL/6 mice.=20
            <I>A,</I> Kaplan-Meier survival curve of intracranial =
glioma-bearing=20
            C57BL/6 mice that were injected intracranially with =
BM-NSC-IL-23,=20
            NIH-3T3-IL-23, BM-NSC-E, or saline. Representative of three=20
            independent experiments. <I>B,</I> intratumoral =
CD8<SUP>+</SUP> and=20
            CD4<SUP>+</SUP> T-cell infiltration 4 weeks after the =
transduced=20
            BM-NSCs were injected. BM-NSC-IL-23 treated mice showed =
robust=20
            infiltration of CD8<SUP>+</SUP> (<I>a</I> and <I>b</I>) and=20
            CD4<SUP>+</SUP> (<I>d</I> and <I>e</I>) T cells within the =
tumor=20
            mass. BM-NSC-E=96treated mice showed negligible =
CD8<SUP>+</SUP>=20
            (<I>c</I>) and CD4<SUP>+</SUP> (<I>f</I>) T-cell =
infiltration.=20
            <I>C,</I> histology staining of glioma-bearing mice brains =
that were=20
            treated with either BM-NSC-IL-23 (<I>a</I> and <I>d</I>) or =
BM-NSC-E=20
            (<I>b</I> and <I>e</I>). Age-matched naive mice were =
included as=20
            control (<I>c</I> and <I>f</I>). Both H&amp;E (<I>a-c</I>) =
and luxol=20
            fast blue (myelin stain) showed no evidence of demyelination =

            (<I>d-f</I>). Bar, 100 =B5m.
            =
<P></P></TD></TR></TBODY></TABLE></TD></TR></TBODY></TABLE></CENTER>&nbsp=
;<BR>Based=20
on the known ability of IL-23 to induce proliferation<SUP> </SUP>of =
memory T=20
cells, we sought to assess whether the BM-NSC-IL-23<SUP> </SUP>treatment =
could=20
induce enhanced intratumoral T-cell infiltration.<SUP> </SUP>Stained by=20
immunohistochemistry, brain tumors from the mice<SUP> </SUP>treated with =

BM-NSC-IL-23 showed robust infiltration of CD8<SUP>+</SUP><SUP> =
</SUP>and=20
CD4<SUP>+</SUP> T cells (<A=20
href=3D"http://cancerres.aacrjournals.org/cgi/content/full/66/5/2630#FIG4=
">Fig.=20
4<I>B, a, b, d</I>, and <I>e</I></A>). There was negligible<SUP>=20
</SUP>CD8<SUP>+</SUP> and CD4<SUP>+</SUP> T-cell infiltration, however, =
within=20
tumors from<SUP> </SUP>mice treated with BM-NSC-E (<A=20
href=3D"http://cancerres.aacrjournals.org/cgi/content/full/66/5/2630#FIG4=
">Fig.=20
4<I>B, c</I> and <I>f</I></A>). The NIH-3T3-IL-23<SUP> </SUP>treatment =
also=20
resulted in intratumoral T-cell infiltration,<SUP> </SUP>but the =
intensity of=20
that infiltration was significantly lower<SUP> </SUP>than that seen in =
the=20
BM-NSC-IL-23=96treated tumors (data<SUP> </SUP>not shown). Analyzing the =
brains=20
that were treated with transduced<SUP> </SUP>BM-NSCs revealed that there =
was no=20
morphologic difference between<SUP> </SUP>BM-NSC-IL-23=96 and =
BM-NSC-E=96treated=20
mice after either<SUP> </SUP>luxol fast blue staining, which was used to =

identify neural<SUP> </SUP>demyelination, or H&amp;E staining. Both =
groups of=20
treated mice<SUP> </SUP>showed a similar staining pattern of brain =
tissue=20
compared with<SUP> </SUP>that of naive control mice (<A=20
href=3D"http://cancerres.aacrjournals.org/cgi/content/full/66/5/2630#FIG4=
">Fig.=20
4<I>C</I></A>). These data indicated that<SUP> </SUP>IL-23=96expressing =
BM-NSCs=20
have a strong protective effect<SUP> </SUP>against intracranial tumor =
and that=20
there is no deleterious<SUP> </SUP>effect with morphology significance=20
associated with IL-23=96expressing<SUP> </SUP>BM-NSCs.<SUP> </SUP>
<P><B>Involvement of tumor-specific CTL and CD8<SUP>+</SUP> and =
CD4<SUP>+</SUP>=20
T cells<SUP> </SUP>in the antitumor activity of IL-23=96expressing=20
BM-NSCs.</B><SUP> </SUP>To examine whether a tumor-specific immunity was =

involved in<SUP> </SUP>the protective activity of IL-23=96expressing =
BM-NSCs,=20
mice<SUP> </SUP>that survived intracranial tumor implantation for 12 =
weeks=20
after<SUP> </SUP>BM-NSC-IL-23 treatment and age-matched naive mice were=20
subjected<SUP> </SUP>to CTL activity assay. CTL activity against =
parental tumor=20
GL26<SUP> </SUP>but not irrelevant tumor p815 was augmented in spleen=20
cells,<SUP> </SUP>which were obtained from mice that survived =
intracranial=20
tumor<SUP> </SUP>implantation after BM-NSC-IL-23 treatment and were=20
restimulated<SUP> </SUP><I>in vitro</I> with mitomycin C=96treated GL26 =
for 5 days=20
(<A=20
href=3D"http://cancerres.aacrjournals.org/cgi/content/full/66/5/2630#FIG5=
">Fig.<SUP>=20
</SUP>5<I>A, a</I></A>). To determine whether IL-23 mainly contributed =
to=20
this<SUP> </SUP>CTL activity, spleen cells from brain tumor-bearing mice =

treated<SUP> </SUP>with either BM-NSC-IL-23 or BM-NSC-E were analyzed 4 =
weeks=20
after<SUP> </SUP>treatment. As shown in <A=20
href=3D"http://cancerres.aacrjournals.org/cgi/content/full/66/5/2630#FIG5=
">Fig.=20
5<I>A</I></A>, GL26-specific CTL activity was<SUP> </SUP>detected only =
in=20
BM-NSC-IL-23=96treated mice. To examine<SUP> </SUP>the involvement of =
particular=20
lymphocytes in the BM-NSC-IL-23=96induced<SUP> </SUP>antitumor activity, =
depleting=20
anti-CD4 or anti-CD8 mAb were<SUP> </SUP>injected before and after =
BM-NSC-IL-23=20
treatment. Normal rat<SUP> </SUP>IgG at the same dose and schedule was =
included=20
as control. Flow<SUP> </SUP>cytometry showed that the injection of mAb =
depleted=20
the appropriate<SUP> </SUP>cell population by 95% (data not shown). =
Depletion of=20
CD8<SUP>+</SUP> T<SUP> </SUP>cells greatly impaired the protective =
effect of=20
BM-NSC-IL-23<SUP> </SUP>in intracranial tumor-bearing mice (<I>P</I> =3D =
0.0010,=20
CD8 depletion<SUP> </SUP>versus wild type, log rank). There was no =
long-term=20
survival<SUP> </SUP>observed in the CD8<SUP>+</SUP> T-cell=96depleted =
mice (<A=20
href=3D"http://cancerres.aacrjournals.org/cgi/content/full/66/5/2630#FIG5=
">Fig.=20
5<I>B</I></A>). Similarly<SUP> </SUP>but less significantly, the =
impairment of=20
the protective effect<SUP> </SUP>was also observed in the =
CD4<SUP>+</SUP>=20
T-cell=96depleted mice (<I>P</I><SUP> </SUP>=3D 0.0097, CD4 depletion =
versus wild=20
type, log rank). When compared<SUP> </SUP>with BM-NSC-E, BM-NSC-IL-23 =
showed=20
different protective activity<SUP> </SUP>on CD8<SUP>+</SUP> versus=20
CD4<SUP>+</SUP> T-cell=96depleted mice (<A=20
href=3D"http://cancerres.aacrjournals.org/cgi/content/full/66/5/2630#FIG5=
">Fig.=20
5<I>B</I></A>). In<SUP> </SUP>addition, on CD4<SUP>+</SUP> T-cell =
knockout=20
transgenic mice BM-NSC-IL-23<SUP> </SUP>produced an effect comparable =
with that=20
of produced on the CD4<SUP>+</SUP><SUP> </SUP>T-cell=96depleted =
wild-type mice=20
(data not shown). These<SUP> </SUP>data suggest that BM-NSC-mediated =
IL-23=20
delivery induces a potent<SUP> </SUP>tumor-specific protective immunity, =
that=20
CD8<SUP>+</SUP> T cells play critical<SUP> </SUP>role in the antitumor =
activity=20
of BM-NSC-IL-23, and that CD4<SUP>+</SUP><SUP> </SUP>T cells are also =
involved=20
in the process.<SUP> </SUP>
<P><A name=3DFIG5><!-- null --></A><BR clear=3Dall>
<CENTER>
<TABLE cellSpacing=3D0 cellPadding=3D0 width=3D"95%">
  <TBODY>
  <TR bgColor=3D#e1e1e1>
    <TD>
      <TABLE cellSpacing=3D2 cellPadding=3D2>
        <TBODY>
        <TR bgColor=3D#e1e1e1>
          <TD vAlign=3Dtop align=3Dmiddle bgColor=3D#ffffff><A=20
            =
href=3D"http://cancerres.aacrjournals.org/cgi/content/full/66/5/2630/FIG5=
"><IMG=20
            height=3D200 alt=3D"Figure 5" hspace=3D10=20
            =
src=3D"http://cancerres.aacrjournals.org/content/vol66/issue5/images/smal=
l/2630fig05c.gif"=20
            width=3D125 vspace=3D5 border=3D2></A><BR><STRONG>View =
larger=20
            version</STRONG> (20K):<BR><NOBR><A=20
            =
href=3D"http://cancerres.aacrjournals.org/cgi/content/full/66/5/2630/FIG5=
">[in=20
            this window]</A><BR><A=20
            onmouseover=3D"window.status=3D'View figure in a separate =
window'; return true"=20
            onclick=3D"startTarget('FIG5', 425, 640); =
this.href=3D'/cgi/content-nw/full/66/5/2630/FIG5'"=20
            =
href=3D"http://cancerres.aacrjournals.org/cgi/content-nw/full/66/5/2630/F=
IG5"=20
            target=3DFIG5>[in a new window]</A><BR>&nbsp;</NOBR> </TD>
          <TD vAlign=3Dtop align=3Dleft><B>Figure 5.</B> Involvement of=20
            tumor-specific CTL activity and CD8<SUP>+</SUP> and =
CD4<SUP>+</SUP>=20
            T cells in the effect of BM-NSC-IL-23. <I>A,</I> =
tumor-specific CTL=20
            activity of spleen cells induced by BM-NSC-IL-23. Spleen =
cells=20
            obtained from mice that survived intracranial GL26 glioma=20
            implantation for 12 weeks after BM-NSC-IL-23 treatment =
(<I>n</I> =3D=20
            3) or from age-matched naive mice (<I>n</I> =3D 3) were =
restimulated=20
            with mitomycin C=96treated GL26 cells for 5 days, and the =
CTL activity=20
            of the resultant effector cells was measured against =
parental GL26=20
            tumor target in a lactate dehydrogenase release assay. =
Irrelevant=20
            p815 was also used as a tumor target for the effector cells =
that=20
            were from BM-NSC-IL-23=96treated mice (<I>a</I>). Spleen =
cells=20
            obtained from glioma-bearing mice that were intracranially =
injected=20
            with either BM-NSC-IL-23 (<I>n</I> =3D 3) or BM-NSC-E =
(<I>n</I> =3D 3)=20
            for 4 weeks were restimulated with mitomycin C=96treated =
GL26 cells=20
            for 5 days, and the CTL activity of resultant effector cells =
was=20
            measured against parental GL26 tumor target in a lactate=20
            dehydrogenase release assay. Irrelevant p815 was also used =
as a=20
            tumor target for the effector cells that were from=20
            BM-NSC-IL-23=96treated mice (<I>b</I>). <I>Points,</I> mean =
of three=20
            mice; <I>bars,</I> SD. Representative of three independent=20
            experiments. <I>B,</I> Kaplan-Meier survival curve of =
intracranial=20
            glioma-bearing C57BL/6 mice. Mice were randomly divided into =
four=20
            groups, in which one group was intracranially injected with =
BM-NSC-E=20
            plus i.p. injections of normal rat serum and the other three =
groups=20
            were intracranially injected with BM-NSC-IL-23 plus i.p. =
injections=20
            of either CD8<SUP>+</SUP> T-cell depleting antibody, =
CD4<SUP>+</SUP>=20
            T-cell depleting antibody, or normal rat serum, =
respectively.=20
            Representative of three independent experiments.
            =
<P></P></TD></TR></TBODY></TABLE></TD></TR></TBODY></TABLE></CENTER>&nbsp=
;<BR><B>NK=20
cells are involved in the antitumor immunity induced by =
IL-23=96expressing<SUP>=20
</SUP>BM-NSCs.</B> To examine the involvement of NK cells in the =
antitumor<SUP>=20
</SUP>activity induced by BM-NSC-IL-23, the first series of =
experiments<SUP>=20
</SUP>were carried out with athymic nude mice, in which T =
lymphocytes<SUP>=20
</SUP>are absent. As shown in <A=20
href=3D"http://cancerres.aacrjournals.org/cgi/content/full/66/5/2630#FIG6=
">Fig.=20
6</A>, no mice survived the intracranial<SUP> </SUP>GL26 glioma after =
either=20
BM-NSC-IL-23 or BM-NSC-E treatment.<SUP> </SUP>However, there was a =
significant=20
difference in survival time<SUP> </SUP>between the two treatments =
(<I>P</I> =3D=20
0.0195, log rank). A longer<SUP> </SUP>survival rate was observed in =
mice=20
treated with BM-NSC-IL-23<SUP> </SUP>compared with those treated with =
BM-NSC-E=20
(<A=20
href=3D"http://cancerres.aacrjournals.org/cgi/content/full/66/5/2630#FIG6=
">Fig.=20
6<I>A</I></A>). Furthermore,<SUP> </SUP>after depleting NK cells in the =
athymic=20
mice by injecting an<SUP> </SUP>anti=96asialo GM1 antibody, no =
significant=20
difference (<I>P</I><SUP> </SUP>=3D 0.8801, log rank) in the survival =
rate between=20
BM-NSC-IL-23<SUP> </SUP>and BM-NSC-E treatments was observed (<A=20
href=3D"http://cancerres.aacrjournals.org/cgi/content/full/66/5/2630#FIG6=
">Fig.=20
6<I>B</I></A>). In C57BL/6 wild-type<SUP> </SUP>mice, anti=96asialo GM1 =
antibody=20
injection, which depleted<SUP> </SUP>NK cells in the wild-type animals, =
greatly=20
impaired the protective<SUP> </SUP>effect of BM-NSC-IL-23 against =
intracranial=20
tumor. Only 20%<SUP> </SUP>of the mice survived intracranial glioma=20
implantation, but there<SUP> </SUP>was an <IMG alt=3D~=20
src=3D"http://cancerres.aacrjournals.org/math/sim.gif" border=3D0>60% =
survival rate=20
after normal rabbit serum injection,<SUP> </SUP>which served as control =
(<A=20
href=3D"http://cancerres.aacrjournals.org/cgi/content/full/66/5/2630#FIG6=
">Fig.=20
6<I>C</I></A>). The survival rate between<SUP> </SUP>the two groups was=20
significantly different (<I>P</I> =3D 0.0457, log<SUP> </SUP>rank). =
These data=20
suggest that NK cells are involved in the<SUP> </SUP>antitumor activity =
produced=20
by IL-23=96expressing BM-NSCs.<SUP> </SUP>
<P><A name=3DFIG6><!-- null --></A><BR clear=3Dall>
<CENTER>
<TABLE cellSpacing=3D0 cellPadding=3D0 width=3D"95%">
  <TBODY>
  <TR bgColor=3D#e1e1e1>
    <TD>
      <TABLE cellSpacing=3D2 cellPadding=3D2>
        <TBODY>
        <TR bgColor=3D#e1e1e1>
          <TD vAlign=3Dtop align=3Dmiddle bgColor=3D#ffffff><A=20
            =
href=3D"http://cancerres.aacrjournals.org/cgi/content/full/66/5/2630/FIG6=
"><IMG=20
            height=3D200 alt=3D"Figure 6" hspace=3D10=20
            =
src=3D"http://cancerres.aacrjournals.org/content/vol66/issue5/images/smal=
l/2630fig06c.gif"=20
            width=3D142 vspace=3D5 border=3D2></A><BR><STRONG>View =
larger=20
            version</STRONG> (21K):<BR><NOBR><A=20
            =
href=3D"http://cancerres.aacrjournals.org/cgi/content/full/66/5/2630/FIG6=
">[in=20
            this window]</A><BR><A=20
            onmouseover=3D"window.status=3D'View figure in a separate =
window'; return true"=20
            onclick=3D"startTarget('FIG6', 462, 640); =
this.href=3D'/cgi/content-nw/full/66/5/2630/FIG6'"=20
            =
href=3D"http://cancerres.aacrjournals.org/cgi/content-nw/full/66/5/2630/F=
IG6"=20
            target=3DFIG6>[in a new window]</A><BR>&nbsp;</NOBR> </TD>
          <TD vAlign=3Dtop align=3Dleft><B>Figure 6.</B> Involvement of =
NK cells=20
            in the antitumor immunity induced by BM-NSC-IL-23. <I>A,</I> =

            Kaplan-Meier survival curve of intracranial glioma-bearing =
athymic=20
            nude mice that were intracranially injected with either =
BM-NSC-IL-23=20
            or BM-NSC-E. <I>B,</I> Kaplan-Meier survival curve of =
intracranial=20
            glioma-bearing athymic nude mice that were depleted of NK =
cells with=20
            an anti=96asialo GM1 antibody injection and intracranially =
injected=20
            with either BM-NSC-IL-23 or BM-NSC-E. <I>C,</I> Kaplan-Meier =

            survival curve of intracranial glioma-bearing C57BL/6 mice =
that were=20
            intracranially injected with BM-NSC-IL-23 plus i.p. =
injection of=20
            either anti=96asialo GM1 antibody for NK cell depletion or =
normal rat=20
            serum as control. Representative of three independent =
experiments.
            =
<P></P></TD></TR></TBODY></TABLE></TD></TR></TBODY></TABLE></CENTER>&nbsp=
;<BR><B>IL-23=96expressing=20
BM-NSCs induce long-term immune memory<SUP> </SUP>and enhanced IFN-<IMG=20
alt=3D{gamma} src=3D"http://cancerres.aacrjournals.org/math/gamma.gif" =
border=3D0>=20
expression in brain.</B> To examine whether a<SUP> </SUP>memory =
protective=20
immunity was established in those animals<SUP> </SUP>that survived =
intracranial=20
GL26 glioma after IL-23=96expressing<SUP> </SUP>BM-NSC treatment, the =
surviving=20
C57BL/6 mice were subjected<SUP> </SUP>to rechallenge with intracranial=20
injection of parental GL26<SUP> </SUP>glioma cells. All of the =
rechallenged=20
animals survived beyond<SUP> </SUP>day 90 after the rechallenge and were =

tumor-free upon sacrifice<SUP> </SUP>as verified by H&amp;E staining of =
the=20
brain sections. In contrast,<SUP> </SUP>age-matched naive mice were =
uniformly=20
susceptible to GL26 glioma<SUP> </SUP>challenge and died of brain tumor =
within=20
35 days of the challenge.<SUP> </SUP>
<P>To study the possible molecules that may involve in the activity<SUP> =

</SUP>of IL-23=96expressing BM-NSC in brain, we focused on IL-17<SUP> =
</SUP>and=20
IFN-<IMG alt=3D{gamma} =
src=3D"http://cancerres.aacrjournals.org/math/gamma.gif"=20
border=3D0>, because these molecules have been shown to play =
important<SUP>=20
</SUP>roles for the dendritic cell and T-cell activation states, =
which<SUP>=20
</SUP>were promoted by IL-23 (<A=20
href=3D"http://cancerres.aacrjournals.org/cgi/content/full/66/5/2630#B14"=
>14</A>,=20
<A=20
href=3D"http://cancerres.aacrjournals.org/cgi/content/full/66/5/2630#B15"=
>15</A>,=20
<A=20
href=3D"http://cancerres.aacrjournals.org/cgi/content/full/66/5/2630#B21"=
>21</A>).=20
The BM-NSC-IL-23=96treated<SUP> </SUP>survivors of the earlier =
experiment were=20
rechallenged with parental<SUP> </SUP>GL26 cells alone or GL26 with =
either=20
BM-NSC-IL-23 or BM-NSC-E.<SUP> </SUP>After the rechallenge, brain =
tissues were=20
analyzed by RT-PCR.<SUP> </SUP>We were consistently unable to detect any =
IL-17=20
expression.<SUP> </SUP>However, IFN-<IMG alt=3D{gamma}=20
src=3D"http://cancerres.aacrjournals.org/math/gamma.gif" border=3D0> was =
detected=20
from day 1 and reached the maximum<SUP> </SUP>level 5 to 7 days after =
the=20
rechallenge (<A=20
href=3D"http://cancerres.aacrjournals.org/cgi/content/full/66/5/2630#FIG7=
">Fig.=20
7<I>A</I></A>). Then, the<SUP> </SUP>expression declined to an =
undetectable=20
level 2 weeks after the<SUP> </SUP>rechallenge. The IFN-<IMG =
alt=3D{gamma}=20
src=3D"http://cancerres.aacrjournals.org/math/gamma.gif" border=3D0> =
expression was=20
always higher in the GL26<SUP> </SUP>plus BM-NSC-IL-23 rechallenged =
animals than=20
in the GL26 plus<SUP> </SUP>BM-NSC-E or the GL26 alone rechallenged =
animals.=20
Age-matched<SUP> </SUP>naive animals did not have detectable IFN-<IMG=20
alt=3D{gamma} src=3D"http://cancerres.aacrjournals.org/math/gamma.gif" =
border=3D0>=20
expression in their<SUP> </SUP>brains after GL26 plus BM-NSC-IL-23 or =
GL26 alone=20
challenges<SUP> </SUP>(<A=20
href=3D"http://cancerres.aacrjournals.org/cgi/content/full/66/5/2630#FIG7=
">Fig.=20
7<I>B</I></A>). To further examine the IFN-<IMG alt=3D{gamma}=20
src=3D"http://cancerres.aacrjournals.org/math/gamma.gif" border=3D0> =
expression=20
level, we<SUP> </SUP>used relative quantitative real-time PCR to analyze =
the=20
brain<SUP> </SUP>samples 7 days after tumor rechallenge. As shown in <A=20
href=3D"http://cancerres.aacrjournals.org/cgi/content/full/66/5/2630#TBL2=
">Table=20
2</A>,<SUP> </SUP>IFN-<IMG alt=3D{gamma}=20
src=3D"http://cancerres.aacrjournals.org/math/gamma.gif" border=3D0> =
mRNA was=20
up-regulated in all rechallenged mice that survived<SUP> </SUP>the =
earlier=20
experiment compared with the age-matched naive mice<SUP> </SUP>that were =

challenged with GL26 plus BM-NSC-IL-23 or GL26 alone.<SUP> </SUP>We did =
not find=20
IFN-<IMG alt=3D{gamma} =
src=3D"http://cancerres.aacrjournals.org/math/gamma.gif"=20
border=3D0> mRNA up-regulation in mice that survived<SUP> </SUP>the =
earlier=20
experiment but without rechallenge. These data suggest<SUP> </SUP>that=20
IL-23=96expressing BM-NSCs used to treat intracranial<SUP> </SUP>gliomas =
can=20
induce long-term antitumor memory that is associated<SUP> </SUP>with =
enhanced=20
IFN-<IMG alt=3D{gamma} =
src=3D"http://cancerres.aacrjournals.org/math/gamma.gif"=20
border=3D0>, but not IL-17, up-regulation in the brain.<SUP> </SUP>
<P><A name=3DFIG7><!-- null --></A><BR clear=3Dall>
<CENTER>
<TABLE cellSpacing=3D0 cellPadding=3D0 width=3D"95%">
  <TBODY>
  <TR bgColor=3D#e1e1e1>
    <TD>
      <TABLE cellSpacing=3D2 cellPadding=3D2>
        <TBODY>
        <TR bgColor=3D#e1e1e1>
          <TD vAlign=3Dtop align=3Dmiddle bgColor=3D#ffffff><A=20
            =
href=3D"http://cancerres.aacrjournals.org/cgi/content/full/66/5/2630/FIG7=
"><IMG=20
            height=3D119 alt=3D"Figure 7" hspace=3D10=20
            =
src=3D"http://cancerres.aacrjournals.org/content/vol66/issue5/images/smal=
l/2630fig07g.gif"=20
            width=3D200 vspace=3D5 border=3D2></A><BR><STRONG>View =
larger=20
            version</STRONG> (46K):<BR><NOBR><A=20
            =
href=3D"http://cancerres.aacrjournals.org/cgi/content/full/66/5/2630/FIG7=
">[in=20
            this window]</A><BR><A=20
            onmouseover=3D"window.status=3D'View figure in a separate =
window'; return true"=20
            onclick=3D"startTarget('FIG7', 590, 461); =
this.href=3D'/cgi/content-nw/full/66/5/2630/FIG7'"=20
            =
href=3D"http://cancerres.aacrjournals.org/cgi/content-nw/full/66/5/2630/F=
IG7"=20
            target=3DFIG7>[in a new window]</A><BR>&nbsp;</NOBR> </TD>
          <TD vAlign=3Dtop align=3Dleft><B>Figure 7.</B> RT-PCR assay of =
cytokine=20
            expression within brain after the rechallenges/challenges. =
<I>A,</I>=20
            IFN-<IMG alt=3D{gamma}=20
            src=3D"http://cancerres.aacrjournals.org/math/gamma.gif" =
border=3D0>=20
            expression was detected in the brain tissues of mice that =
survived=20
            earlier experiment and rechallenged with GL26 alone (<I>lane =
4</I>)=20
            or GL26 with either BM-NSC-IL-23 (<I>lane 2</I>) or BM-NSC-E =

            (<I>lane 3</I>). IL-17 expression was not detected whether =
GL26=20
            alone (<I>lane 8</I>) or GL26 with either BM-NSC-IL-23 =
(<I>lane=20
            6</I>) or BM-NSC-E (<I>lane 7</I>) was used in the =
rechallenges.=20
            Neither IFN-<IMG alt=3D{gamma}=20
            src=3D"http://cancerres.aacrjournals.org/math/gamma.gif" =
border=3D0> nor=20
            IL-17 expression was detected in age-matched naive mice =
after the=20
            GL26 plus BM-NSC-IL-23 challenge (<I>lanes 5</I> and =
<I>9</I>).=20
            <I>B,</I> IFN-<IMG alt=3D{gamma}=20
            src=3D"http://cancerres.aacrjournals.org/math/gamma.gif" =
border=3D0>=20
            expression profile in brain tissue of different animals and=20
            different rechallenges/challenges. IFN-<IMG alt=3D{gamma}=20
            src=3D"http://cancerres.aacrjournals.org/math/gamma.gif" =
border=3D0>=20
            expression was detected in mice that survived earlier =
experiments=20
            and rechallenged with GL26 alone (<I>lanes 4</I> and =
<I>7</I>) or=20
            GL26 with either BM-NSC-IL-23 (<I>lanes 2</I> and <I>5</I>) =
or=20
            BM-NSC-E (<I>lanes 3</I> and <I>6</I>). IFN-<IMG =
alt=3D{gamma}=20
            src=3D"http://cancerres.aacrjournals.org/math/gamma.gif" =
border=3D0>=20
            expression was not detected in age-matched naive mice that =
were=20
            challenged with GL26 plus BM-NSC-IL-23 (<I>lane 8</I>) or =
GL26 alone=20
            (<I>lane 9</I>). Brain tissues harvested on day 7 after the=20
            rechallenge/challenge. Representative of three independent=20
            experiments. <I>L,</I> 1 kb plus DNA ladder.
            =
<P></P></TD></TR></TBODY></TABLE></TD></TR></TBODY></TABLE></CENTER>&nbsp=
;<BR><A=20
name=3DTBL2><!-- null --></A><BR clear=3Dall>
<CENTER>
<TABLE cellSpacing=3D0 cellPadding=3D0 width=3D"95%">
  <TBODY>
  <TR bgColor=3D#e1e1e1>
    <TD>
      <TABLE cellSpacing=3D2 cellPadding=3D2>
        <TBODY>
        <TR bgColor=3D#e1e1e1>
          <TD vAlign=3Dtop align=3Dmiddle bgColor=3D#ffffff><STRONG>View =
this=20
            table:</STRONG><BR><NOBR><A=20
            =
href=3D"http://cancerres.aacrjournals.org/cgi/content/full/66/5/2630/TBL2=
">[in=20
            this window]</A><BR><A=20
            onmouseover=3D"window.status=3D'View table in a separate =
window'; return true"=20
            onclick=3D"startTarget('TBL2', 500, 400); =
this.href=3D'/cgi/content-nw/full/66/5/2630/TBL2'"=20
            =
href=3D"http://cancerres.aacrjournals.org/cgi/content-nw/full/66/5/2630/T=
BL2"=20
            target=3DTBL2>[in a new window]</A><BR>&nbsp;</NOBR> </TD>
          <TD vAlign=3Dtop align=3Dleft><B>Table 2.</B> Relative =
IFN-<IMG=20
            alt=3D{gamma} =
src=3D"http://cancerres.aacrjournals.org/math/gamma.gif"=20
            border=3D0> mRNA up-regulation in brain tissue
            =
<P></P></TD></TR></TBODY></TABLE></TD></TR></TBODY></TABLE></CENTER>&nbsp=
;<BR><A=20
name=3DSEC4><!-- null --></A><BR clear=3Dright>
<TABLE cellSpacing=3D0 cellPadding=3D0 width=3D"100%" bgColor=3D#e1e1e1>
  <TBODY>
  <TR>
    <TD vAlign=3Dcenter align=3Dleft width=3D"5%" bgColor=3D#ffffff><IMG =
height=3D21=20
      alt=3D" " hspace=3D5=20
      src=3D"http://cancerres.aacrjournals.org/icons/toc/rarrow.gif" =
width=3D10></TD>
    <TH vAlign=3Dcenter align=3Dleft width=3D"95%"><FONT =
size=3D+2>&nbsp;&nbsp;=20
      Discussion </FONT></TH></TR></TBODY></TABLE>
<TABLE cellPadding=3D5 align=3Dright border=3D1>
  <TBODY>
  <TR>
    <TH align=3Dleft><FONT size=3D-1><A=20
      =
href=3D"http://cancerres.aacrjournals.org/cgi/content/full/66/5/2630#top"=
><IMG=20
      height=3D9 alt=3D" " hspace=3D5=20
      src=3D"http://cancerres.aacrjournals.org/icons/toc/uarrow.gif" =
width=3D11=20
      border=3D0>Top<BR></A><A=20
      =
href=3D"http://cancerres.aacrjournals.org/cgi/content/full/66/5/2630#ABS"=
><IMG=20
      height=3D9 alt=3D" " hspace=3D5=20
      src=3D"http://cancerres.aacrjournals.org/icons/toc/uarrow.gif" =
width=3D11=20
      border=3D0>Abstract<BR></A><A=20
      =
href=3D"http://cancerres.aacrjournals.org/cgi/content/full/66/5/2630#SEC1=
"><IMG=20
      height=3D9 alt=3D" " hspace=3D5=20
      src=3D"http://cancerres.aacrjournals.org/icons/toc/uarrow.gif" =
width=3D11=20
      border=3D0>Introduction<BR></A><A=20
      =
href=3D"http://cancerres.aacrjournals.org/cgi/content/full/66/5/2630#SEC2=
"><IMG=20
      height=3D9 alt=3D" " hspace=3D5=20
      src=3D"http://cancerres.aacrjournals.org/icons/toc/uarrow.gif" =
width=3D11=20
      border=3D0>Materials and Methods<BR></A><A=20
      =
href=3D"http://cancerres.aacrjournals.org/cgi/content/full/66/5/2630#SEC3=
"><IMG=20
      height=3D9 alt=3D" " hspace=3D5=20
      src=3D"http://cancerres.aacrjournals.org/icons/toc/uarrow.gif" =
width=3D11=20
      border=3D0>Results<BR></A><IMG height=3D9 alt=3D" " hspace=3D5=20
      src=3D"http://cancerres.aacrjournals.org/icons/toc/dot.gif" =
width=3D11=20
      border=3D0><FONT color=3D#464c53>Discussion</FONT><BR><A=20
      =
href=3D"http://cancerres.aacrjournals.org/cgi/content/full/66/5/2630#BIBL=
"><IMG=20
      height=3D9 alt=3D" " hspace=3D5=20
      src=3D"http://cancerres.aacrjournals.org/icons/toc/darrow.gif" =
width=3D11=20
      =
border=3D0>References<BR></A></FONT></TH></TR></TBODY></TABLE>&nbsp;<BR>I=
n this=20
study, we have presented evidence that neural stem-like<SUP> </SUP>cells =
can be=20
isolated from whole bone marrow of adult mice.<SUP> </SUP>The mice =
BM-NSCs were=20
able to be propagated and differentiated<SUP> </SUP>into neural and =
glial cells=20
<I>in vitro</I> and were able to track<SUP> </SUP>intracranial glioma =
cells when=20
implanted into glioma-bearing<SUP> </SUP>brain. More importantly, these =
cells=20
displayed the ability to<SUP> </SUP>track invading tumor islands that =
had=20
infiltrated deep into<SUP> </SUP>normal neural tissue well away from the =
main=20
tumor mass. By<SUP> </SUP>incorporating the tumor tropic properties of =
NSCs with=20
a novel<SUP> </SUP>cytokine, IL-23, which acts on memory T cells and=20
dendritic<SUP> </SUP>cells (<A=20
href=3D"http://cancerres.aacrjournals.org/cgi/content/full/66/5/2630#B14"=
>14</A>,=20
<A=20
href=3D"http://cancerres.aacrjournals.org/cgi/content/full/66/5/2630#B15"=
>15</A>),=20
we found that IL-23=96expressing BM-NSCs<SUP> </SUP>when injected into =
brain=20
showed antitumor activity against intracranial<SUP> </SUP>glioma. Mice =
that=20
survived brain tumor implantation after BM-NSC-IL-23<SUP> =
</SUP>treatment=20
acquired a tumor-specific protective immunity. CD8<SUP>+</SUP><SUP> =
</SUP>T=20
cells were crucial for this potent antitumor activity; in<SUP> =
</SUP>addition,=20
CD4<SUP>+</SUP> T cells and NK cells were also involved in the<SUP>=20
</SUP>induction of this antitumor activity. Furthermore, enhanced<SUP>=20
</SUP>IFN-<IMG alt=3D{gamma}=20
src=3D"http://cancerres.aacrjournals.org/math/gamma.gif" border=3D0> =
production in=20
the brain tissue was important for the BM-NSC-IL-23=96elicited<SUP> =
</SUP>immune=20
memory response against subsequent parental tumor rechallenge.<SUP> =
</SUP>
<P>Effective eradication of primary or metastatic brain tumors<SUP> =
</SUP>and=20
generation of a long-lasting immune response with an effective<SUP> =
</SUP>gene=20
delivery system are important goals for cancer gene immunotherapy.<SUP>=20
</SUP>Most gene delivery strategies employ viral vectors to deliver<SUP> =

</SUP>genes directly to tumor cells <I>in vivo</I>; however, the =
limitation<SUP>=20
</SUP>of transgene distribution to extensive areas, especially the<SUP>=20
</SUP>invading tumor foci, has limited the efficacy of such =
approaches.<SUP>=20
</SUP>The present study sought to take advantage of the migratory<SUP>=20
</SUP>ability of neural stem cells to track brain tumors and to =
deliver<SUP>=20
</SUP>therapeutic molecules into expansive tumor regions. We =
generated<SUP>=20
</SUP>neural stem-like cells from adult mice bone marrow. The =
BM-NSCs<SUP>=20
</SUP>displayed the ability to track brain tumor in a mouse =
intracranial<SUP>=20
</SUP>glioma model. After intratumoral or peritumoral implantation,<SUP> =

</SUP>the BM-NSCs extensively migrated throughout the established<SUP>=20
</SUP>tumor mass. In addition, the BM-NSCs tracked into the =
invading<SUP>=20
</SUP>tumor islands that had migrated away from the main tumor =
mass.<SUP>=20
</SUP>This tracking characteristic has not been shown previously in<SUP> =

</SUP>bone marrow=96derived neural progenitor-like cells (<A=20
href=3D"http://cancerres.aacrjournals.org/cgi/content/full/66/5/2630#B12"=
>12</A>).<SUP>=20
</SUP>
<P>By transducing the BM-NSCs with an adenoviral vector encoding<SUP> =
</SUP>a=20
newly discovered cytokine, IL-23, we were able to deliver<SUP> </SUP>the =

molecule into intracranial tumor sites. It has just been<SUP> =
</SUP>shown that=20
IL-23=96expressing tumor cells produced antitumor<SUP> </SUP>activity =
(<A=20
href=3D"http://cancerres.aacrjournals.org/cgi/content/full/66/5/2630#B16"=
>16</A>).=20
Delivering IL-23 by using BM-NSCs in the current<SUP> </SUP>study =
resulted in a=20
protective effect in intracranial glioma-bearing<SUP> </SUP>mice with a=20
significant prolongation of survival. These results<SUP> </SUP>strongly =
suggest=20
that IL-23=96expressing BM-NSCs produce<SUP> </SUP>antiglioma activity. =
To verify=20
the potential role of IL-23 in<SUP> </SUP>this antiglioma activity, we =
compared=20
the effect of IL-23=96transduced<SUP> </SUP>BM-NSCs with that of an =
empty control=20
vector transduced BM-NSCs.<SUP> </SUP>All of the intracranial =
glioma-bearing=20
mice died within 40 days<SUP> </SUP>after treatment with the empty =
control=20
vector transduced BM-NSCs.<SUP> </SUP>To further verify the potential =
benefit of=20
the migration of<SUP> </SUP>BM-NSC in producing antiglioma activity, we =
compared=20
the survival<SUP> </SUP>benefit offered by BM-NSC-IL-23 to that =
conferred by=20
IL-23 secretion<SUP> </SUP>by nonmigratory NIH-3T3 cells, which produce =
similar=20
levels<SUP> </SUP>of IL-23 to BM-NSC-IL23 <I>in vitro</I> and <I>in =
vivo</I>.=20
NIH-3T3-IL-23<SUP> </SUP>treatment produced significantly less =
protective effect=20
compared<SUP> </SUP>with BM-NSC-IL-23. Taken together, the antiglioma =
activity=20
of<SUP> </SUP>IL-23=96expressing BM-NSCs may be a direct combined =
consequence<SUP>=20
</SUP>of the ability of BM-NSCs to target migrating tumor cells and<SUP> =

</SUP>the ability of IL-23 to activate immune responses against =
tumor<SUP>=20
</SUP>cells.<SUP> </SUP>
<P>It has been shown that IL-23 can act directly on dendritic cells<SUP> =

</SUP>to promote tumor peptide presentation to T cells (<A=20
href=3D"http://cancerres.aacrjournals.org/cgi/content/full/66/5/2630#B15"=
>15</A>).=20
In addition,<SUP> </SUP>T-cell responses may be amplified by the potent =
effect=20
of IL-23<SUP> </SUP>on memory-activated T cells (<A=20
href=3D"http://cancerres.aacrjournals.org/cgi/content/full/66/5/2630#B14"=
>14</A>).=20
Our experiments in immunocompromised<SUP> </SUP>hosts and in animals =
selectively=20
depleted of various lymphocyte<SUP> </SUP>populations suggest that =
T-cell immune=20
responses are important<SUP> </SUP>for antitumor function of =
IL-23=96expressing=20
BM-NSCs and<SUP> </SUP>that CD8<SUP>+</SUP> T cells play a crucial role =
in=20
BM-NSC-IL-23=96mediated<SUP> </SUP>antitumor activity, because the =
immune=20
protective effect was<SUP> </SUP>greatly impaired in T-cell=96deficient =
athymic=20
nude mice<SUP> </SUP>and in wild-type mice depleted of CD8<SUP>+</SUP> T =
cells.=20
In CD4 knockout<SUP> </SUP>mice and in wild-type mice depleted of=20
CD4<SUP>+</SUP> T cells, we found<SUP> </SUP>that CD4<SUP>+</SUP> T =
cells were=20
also involved in the antitumor activity<SUP> </SUP>of BM-NSC-IL-23 =
albeit to a=20
lesser extent than CD8<SUP>+</SUP> T cells.<SUP> </SUP>In addition, in =
both=20
athymic nude mice and wild-type mice, we<SUP> </SUP>observed the role of =
NK=20
cells in the immune protective effect<SUP> </SUP>of BM-NSC-IL-23. NK =
cell=20
depletion abolished and reduced the<SUP> </SUP>protective effect in =
athymic nude=20
and wild-type mice, respectively.<SUP> </SUP>Lo et al. described the =
role of=20
CD8<SUP>+</SUP> T cells in the antitumor<SUP> </SUP>activity of =
IL-23=96expressing=20
tumor cells in a colon adenocarcinoma<SUP> </SUP>model (<A=20
href=3D"http://cancerres.aacrjournals.org/cgi/content/full/66/5/2630#B16"=
>16</A>).=20
Our results confirmed that CD8<SUP>+</SUP> T cells are crucial<SUP> =
</SUP>to the=20
IL-23=96mediated antitumor activity. However, the<SUP> </SUP>finding =
that=20
CD4<SUP>+</SUP> T cells and NK cells were involved in the<SUP> =
</SUP>IL-23=20
activity in our current study represents a significant<SUP> =
</SUP>divergence=20
from the results forwarded by Lo et al. (<A=20
href=3D"http://cancerres.aacrjournals.org/cgi/content/full/66/5/2630#B16"=
>16</A>),=20
in<SUP> </SUP>which IL-23=96expressing tumor cells induced antitumor =
activity<SUP>=20
</SUP>but did not require CD4<SUP>+</SUP> T cells or NK cells. This may=20
possibly<SUP> </SUP>be explained by their use of a different tumor cell =
line=20
(CT26)<SUP> </SUP>in their colon adenocarcinoma s.c. tumor model, which =
is=20
distinct<SUP> </SUP>from the GL26 glioma we used in our study as an=20
intracranial<SUP> </SUP>brain tumor model. Alternatively, this =
difference may be=20
attributable<SUP> </SUP>to the unique environment of the central nervous =
system=20
with<SUP> </SUP>regard to antigen presentation by microglia or recruited =

dendritic<SUP> </SUP>cells. Interestingly, when we used B16-F10 cells as =

intracranial<SUP> </SUP>tumor model, we also observed the involvement of =
NK=20
cells in<SUP> </SUP>the antitumor activity of IL-23 (data not shown). =
The=20
variance<SUP> </SUP>in the cellular subsets crucial to an antitumor =
effect=20
needs<SUP> </SUP>further delineation.<SUP> </SUP>
<P>IL-23 can activate macrophages to produce proinflammatory =
cytokines<SUP>=20
</SUP>that may contribute to autoimmune inflammation of the brain<SUP> =
</SUP>(<A=20
href=3D"http://cancerres.aacrjournals.org/cgi/content/full/66/5/2630#B21"=
>21</A>=96<A=20
href=3D"http://cancerres.aacrjournals.org/cgi/content/full/66/5/2630#B24"=
>24</A>).=20
In the present study, we found that BM-NSC-IL-23=96treated<SUP> =
</SUP>long-term=20
survivors showed enhanced IFN-<IMG alt=3D{gamma}=20
src=3D"http://cancerres.aacrjournals.org/math/gamma.gif" border=3D0> =
expression in=20
brain<SUP> </SUP>tissue upon tumor rechallenge. We were consistently=20
unable,<SUP> </SUP>however, to detect IL-17, a cytokine involved in the =
IL-23=20
signaling<SUP> </SUP>pathway and which induces inflammation (<A=20
href=3D"http://cancerres.aacrjournals.org/cgi/content/full/66/5/2630#B21"=
>21</A>,=20
<A=20
href=3D"http://cancerres.aacrjournals.org/cgi/content/full/66/5/2630#B23"=
>23</A>,=20
<A=20
href=3D"http://cancerres.aacrjournals.org/cgi/content/full/66/5/2630#B24"=
>24</A>),=20
even when<SUP> </SUP>we delivered IL-23 with the tumor rechallenge. =
These=20
findings<SUP> </SUP>were consistent with the results that elucidated =
that mice=20
brains<SUP> </SUP>maintained normal morphologic characteristics after=20
BM-NSC-IL-23<SUP> </SUP>treatment as shown by H&amp;E and =
demyelination-specific=20
staining.<SUP> </SUP>These data suggest that BM-NSC-IL-23 treatment used =
in the=20
current<SUP> </SUP>study does not induce detectable inflammation in the =
brain=20
either<SUP> </SUP>because the IL-23 level delivered by BM-NSCs is not =
high=20
enough<SUP> </SUP>to do so or because the <I>in vivo</I> expression of =
exogenous=20
IL-23<SUP> </SUP>predominantly enhances long-lasting memory T-cell=20
immunity,<SUP> </SUP>such as antigen-specific CTL and IFN-<IMG =
alt=3D{gamma}=20
src=3D"http://cancerres.aacrjournals.org/math/gamma.gif" =
border=3D0>=96producing Th1=20
immune<SUP> </SUP>responses (<A=20
href=3D"http://cancerres.aacrjournals.org/cgi/content/full/66/5/2630#B25"=
>25</A>).=20
To understand this, it will be required to closely<SUP> =
</SUP>investigate the=20
signal pathways that are involved in inflammation<SUP> </SUP>and in =
protective=20
immune responses induced by exogenous IL-23<SUP> </SUP>expression.<SUP> =
</SUP>
<P>In summary, in this study, we showed that neural stem-like cells<SUP> =

</SUP>generated from adult bone marrow can be used as a targeting<SUP>=20
</SUP>vehicle to track migratory and invasive tumor cells within =
the<SUP>=20
</SUP>central nervous system. In combination with the unique action<SUP> =

</SUP>of IL-23 on tumoricidal potency, autologous neural stem-like<SUP>=20
</SUP>cell=96mediated tumor targeting immune therapy represents<SUP> =
</SUP>an=20
attractive new treatment modality for malignant brain tumors.<SUP> =
</SUP>
<P><A name=3DACK><!-- null --></A><BR clear=3Dright>
<TABLE cellSpacing=3D0 cellPadding=3D0 width=3D"100%" bgColor=3D#e1e1e1>
  <TBODY>
  <TR>
    <TD vAlign=3Dcenter align=3Dleft width=3D"5%" bgColor=3D#ffffff><IMG =
height=3D21=20
      alt=3D" " hspace=3D5=20
      src=3D"http://cancerres.aacrjournals.org/icons/toc/rarrow.gif" =
width=3D10></TD>
    <TH vAlign=3Dcenter align=3Dleft width=3D"95%"><FONT =
size=3D+2>&nbsp;&nbsp;=20
      Acknowledgments =
</FONT></TH></TR></TBODY></TABLE>&nbsp;<BR><B>Grant support:</B>=20
NIH grants 1K23 NS02232, 1R01 NS048959, and 1R21<SUP> </SUP>NS048879 =
(J.S.=20
Yu).<SUP> </SUP>
<P>The costs of publication of this article were defrayed in part<SUP> =
</SUP>by=20
the payment of page charges. This article must therefore<SUP> </SUP>be =
hereby=20
marked <I>advertisement</I> in accordance with 18 U.S.C.<SUP> =
</SUP>Section 1734=20
solely to indicate this fact.<SUP> </SUP>
<P>We thank Drs. Sebastian Wachsmann-Hogiu and Daniel H. Farkas<SUP> =
</SUP>for=20
their kind assistance in obtaining images of stained brain<SUP> =
</SUP>sections,=20
Dr. Scot Macdonald for the critical review of the<SUP> </SUP>article and =
helpful=20
comments, and Dr. Hong Zhou for discussions.<SUP> </SUP>
<P><A name=3DFN><!-- null --></A><BR clear=3Dright>
<TABLE cellSpacing=3D0 cellPadding=3D0 width=3D"100%" bgColor=3D#e1e1e1>
  <TBODY>
  <TR>
    <TD vAlign=3Dcenter align=3Dleft width=3D"5%" bgColor=3D#ffffff><IMG =
height=3D21=20
      alt=3D" " hspace=3D5=20
      src=3D"http://cancerres.aacrjournals.org/icons/toc/rarrow.gif" =
width=3D10></TD>
    <TH vAlign=3Dcenter align=3Dleft width=3D"95%"><FONT =
size=3D+2>&nbsp;&nbsp;=20
      Footnotes </FONT></TH></TR></TBODY></TABLE>&nbsp;<BR><A=20
name=3D""><!-- null --></A><B>Note:</B> X. Yuan and J. Hu contributed =
equally to=20
this work.<SUP> </SUP>
<P><A name=3DFN1><!-- null --></A><SUP>3</SUP> Yuan et al., unpublished =
data.<SUP>=20
</SUP><A=20
href=3D"http://cancerres.aacrjournals.org/cgi/content/full/66/5/2630#RFN1=
"><IMG=20
height=3D12 alt=3DBack =
src=3D"http://cancerres.aacrjournals.org/icons/back.gif"=20
width=3D12 border=3D0></A>
<P>Received 5/16/05. Revised 12/ 9/05. Accepted 12/27/05.
<P><A name=3DBIBL><!-- null --></A><BR clear=3Dright>
<TABLE cellSpacing=3D0 cellPadding=3D0 width=3D"100%" bgColor=3D#e1e1e1>
  <TBODY>
  <TR>
    <TD vAlign=3Dcenter align=3Dleft width=3D"5%" bgColor=3D#ffffff><IMG =
height=3D21=20
      alt=3D" " hspace=3D5=20
      src=3D"http://cancerres.aacrjournals.org/icons/toc/rarrow.gif" =
width=3D10></TD>
    <TH vAlign=3Dcenter align=3Dleft width=3D"95%"><FONT =
size=3D+2>&nbsp;&nbsp;=20
      References </FONT></TH></TR></TBODY></TABLE>
<TABLE cellPadding=3D5 align=3Dright border=3D1>
  <TBODY>
  <TR>
    <TH align=3Dleft><FONT size=3D-1><A=20
      =
href=3D"http://cancerres.aacrjournals.org/cgi/content/full/66/5/2630#top"=
><IMG=20
      height=3D9 alt=3D" " hspace=3D5=20
      src=3D"http://cancerres.aacrjournals.org/icons/toc/uarrow.gif" =
width=3D11=20
      border=3D0>Top<BR></A><A=20
      =
href=3D"http://cancerres.aacrjournals.org/cgi/content/full/66/5/2630#ABS"=
><IMG=20
      height=3D9 alt=3D" " hspace=3D5=20
      src=3D"http://cancerres.aacrjournals.org/icons/toc/uarrow.gif" =
width=3D11=20
      border=3D0>Abstract<BR></A><A=20
      =
href=3D"http://cancerres.aacrjournals.org/cgi/content/full/66/5/2630#SEC1=
"><IMG=20
      height=3D9 alt=3D" " hspace=3D5=20
      src=3D"http://cancerres.aacrjournals.org/icons/toc/uarrow.gif" =
width=3D11=20
      border=3D0>Introduction<BR></A><A=20
      =
href=3D"http://cancerres.aacrjournals.org/cgi/content/full/66/5/2630#SEC2=
"><IMG=20
      height=3D9 alt=3D" " hspace=3D5=20
      src=3D"http://cancerres.aacrjournals.org/icons/toc/uarrow.gif" =
width=3D11=20
      border=3D0>Materials and Methods<BR></A><A=20
      =
href=3D"http://cancerres.aacrjournals.org/cgi/content/full/66/5/2630#SEC3=
"><IMG=20
      height=3D9 alt=3D" " hspace=3D5=20
      src=3D"http://cancerres.aacrjournals.org/icons/toc/uarrow.gif" =
width=3D11=20
      border=3D0>Results<BR></A><A=20
      =
href=3D"http://cancerres.aacrjournals.org/cgi/content/full/66/5/2630#SEC4=
"><IMG=20
      height=3D9 alt=3D" " hspace=3D5=20
      src=3D"http://cancerres.aacrjournals.org/icons/toc/uarrow.gif" =
width=3D11=20
      border=3D0>Discussion<BR></A><IMG height=3D9 alt=3D" " hspace=3D5=20
      src=3D"http://cancerres.aacrjournals.org/icons/toc/dot.gif" =
width=3D11=20
      border=3D0><FONT=20
color=3D#464c53>References</FONT><BR></FONT></TH></TR></TBODY></TABLE>&nb=
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Content-Transfer-Encoding: quoted-printable
Content-Location: http://cancerres.aacrjournals.org/javascript/ajax/xmlhttprequest.js

/*=0A=
=0A=
Cross-Browser XMLHttpRequest v1.2=0A=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=0A=
=0A=
Emulate Gecko 'XMLHttpRequest()' functionality in IE and Opera. Opera =
requires=0A=
the Sun Java Runtime Environment <http://www.java.com/>.=0A=
=0A=
by Andrew Gregory=0A=
http://www.scss.com.au/family/andrew/webdesign/xmlhttprequest/=0A=
=0A=
This work is licensed under the Creative Commons Attribution License. To =
view a=0A=
copy of this license, visit =
http://creativecommons.org/licenses/by-sa/2.5/ or=0A=
send a letter to Creative Commons, 559 Nathan Abbott Way, Stanford, =
California=0A=
94305, USA.=0A=
=0A=
Attribution: Leave my name and web address in this script intact.=0A=
=0A=
Not Supported in Opera=0A=
----------------------=0A=
* user/password authentication=0A=
* responseXML data member=0A=
=0A=
Not Fully Supported in Opera=0A=
----------------------------=0A=
* async requests=0A=
* abort()=0A=
* getAllResponseHeaders(), getAllResponseHeader(header)=0A=
=0A=
*/=0A=
// IE support=0A=
if (window.ActiveXObject && !window.XMLHttpRequest) {=0A=
  window.XMLHttpRequest =3D function() {=0A=
    var msxmls =3D new Array(=0A=
      'Msxml2.XMLHTTP.5.0',=0A=
      'Msxml2.XMLHTTP.4.0',=0A=
      'Msxml2.XMLHTTP.3.0',=0A=
      'Msxml2.XMLHTTP',=0A=
      'Microsoft.XMLHTTP');=0A=
    for (var i =3D 0; i < msxmls.length; i++) {=0A=
      try {=0A=
        return new ActiveXObject(msxmls[i]);=0A=
      } catch (e) {=0A=
      }=0A=
    }=0A=
    return null;=0A=
  };=0A=
}=0A=
// Gecko support=0A=
/* ;-) */=0A=
// Opera support=0A=
if (window.opera && !window.XMLHttpRequest) {=0A=
  window.XMLHttpRequest =3D function() {=0A=
    this.readyState =3D 0; // =
0=3Duninitialized,1=3Dloading,2=3Dloaded,3=3Dinteractive,4=3Dcomplete=0A=
    this.status =3D 0; // HTTP status codes=0A=
    this.statusText =3D '';=0A=
    this._headers =3D [];=0A=
    this._aborted =3D false;=0A=
    this._async =3D true;=0A=
    this._defaultCharset =3D 'ISO-8859-1';=0A=
    this._getCharset =3D function() {=0A=
      var charset =3D _defaultCharset;=0A=
      var contentType =3D =
this.getResponseHeader('Content-type').toUpperCase();=0A=
      val =3D contentType.indexOf('CHARSET=3D');=0A=
      if (val !=3D -1) {=0A=
        charset =3D contentType.substring(val);=0A=
      }=0A=
      val =3D charset.indexOf(';');=0A=
      if (val !=3D -1) {=0A=
        charset =3D charset.substring(0, val);=0A=
      }=0A=
      val =3D charset.indexOf(',');=0A=
      if (val !=3D -1) {=0A=
        charset =3D charset.substring(0, val);=0A=
      }=0A=
      return charset;=0A=
    };=0A=
    this.abort =3D function() {=0A=
      this._aborted =3D true;=0A=
    };=0A=
    this.getAllResponseHeaders =3D function() {=0A=
      return this.getAllResponseHeader('*');=0A=
    };=0A=
    this.getAllResponseHeader =3D function(header) {=0A=
      var ret =3D '';=0A=
      for (var i =3D 0; i < this._headers.length; i++) {=0A=
        if (header =3D=3D '*' || this._headers[i].h =3D=3D header) {=0A=
          ret +=3D this._headers[i].h + ': ' + this._headers[i].v + '\n';=0A=
        }=0A=
      }=0A=
      return ret;=0A=
    };=0A=
    this.getResponseHeader =3D function(header) {=0A=
      var ret =3D getAllResponseHeader(header);=0A=
      var i =3D ret.indexOf('\n');=0A=
      if (i !=3D -1) {=0A=
        ret =3D ret.substring(0, i);=0A=
      }=0A=
      return ret;=0A=
    };=0A=
    this.setRequestHeader =3D function(header, value) {=0A=
      this._headers[this._headers.length] =3D {h:header, v:value};=0A=
    };=0A=
    this.open =3D function(method, url, async, user, password) {=0A=
      this.method =3D method;=0A=
      this.url =3D url;=0A=
      this._async =3D true;=0A=
      this._aborted =3D false;=0A=
      this._headers =3D [];=0A=
      if (arguments.length >=3D 3) {=0A=
        this._async =3D async;=0A=
      }=0A=
      if (arguments.length > 3) {=0A=
        opera.postError('XMLHttpRequest.open() - user/password not =
supported');=0A=
      }=0A=
      this.readyState =3D 1;=0A=
      if (this.onreadystatechange) {=0A=
        this.onreadystatechange();=0A=
      }=0A=
    };=0A=
    this.send =3D function(data) {=0A=
      if (!navigator.javaEnabled()) {=0A=
        alert("XMLHttpRequest.send() - Java must be installed and =
enabled.");=0A=
        return;=0A=
      }=0A=
      if (this._async) {=0A=
        setTimeout(this._sendasync, 0, this, data);=0A=
        // this is not really asynchronous and won't execute until the =
current=0A=
        // execution context ends=0A=
      } else {=0A=
        this._sendsync(data);=0A=
      }=0A=
    }=0A=
    this._sendasync =3D function(req, data) {=0A=
      if (!req._aborted) {=0A=
        req._sendsync(data);=0A=
      }=0A=
    };=0A=
    this._sendsync =3D function(data) {=0A=
      this.readyState =3D 2;=0A=
      if (this.onreadystatechange) {=0A=
        this.onreadystatechange();=0A=
      }=0A=
      // open connection=0A=
      var url =3D new java.net.URL(new =
java.net.URL(window.location.href), this.url);=0A=
      var conn =3D url.openConnection();=0A=
      for (var i =3D 0; i < this._headers.length; i++) {=0A=
        conn.setRequestProperty(this._headers[i].h, this._headers[i].v);=0A=
      }=0A=
      this._headers =3D [];=0A=
      if (this.method =3D=3D 'POST') {=0A=
        // POST data=0A=
        conn.setDoOutput(true);=0A=
        var wr =3D new =
java.io.OutputStreamWriter(conn.getOutputStream(), this._getCharset());=0A=
        wr.write(data);=0A=
        wr.flush();=0A=
        wr.close();=0A=
      }=0A=
      // read response headers=0A=
      // NOTE: the getHeaderField() methods always return nulls for me :(=0A=
      var gotContentEncoding =3D false;=0A=
      var gotContentLength =3D false;=0A=
      var gotContentType =3D false;=0A=
      var gotDate =3D false;=0A=
      var gotExpiration =3D false;=0A=
      var gotLastModified =3D false;=0A=
      for (var i =3D 0; ; i++) {=0A=
        var hdrName =3D conn.getHeaderFieldKey(i);=0A=
        var hdrValue =3D conn.getHeaderField(i);=0A=
        if (hdrName =3D=3D null && hdrValue =3D=3D null) {=0A=
          break;=0A=
        }=0A=
        if (hdrName !=3D null) {=0A=
          this._headers[this._headers.length] =3D {h:hdrName, =
v:hdrValue};=0A=
          switch (hdrName.toLowerCase()) {=0A=
            case 'content-encoding': gotContentEncoding =3D true; break;=0A=
            case 'content-length'  : gotContentLength   =3D true; break;=0A=
            case 'content-type'    : gotContentType     =3D true; break;=0A=
            case 'date'            : gotDate            =3D true; break;=0A=
            case 'expires'         : gotExpiration      =3D true; break;=0A=
            case 'last-modified'   : gotLastModified    =3D true; break;=0A=
          }=0A=
        }=0A=
      }=0A=
      // try to fill in any missing header information=0A=
      var val;=0A=
      val =3D conn.getContentEncoding();=0A=
      if (val !=3D null && !gotContentEncoding) =
this._headers[this._headers.length] =3D {h:'Content-encoding', v:val};=0A=
      val =3D conn.getContentLength();=0A=
      if (val !=3D -1 && !gotContentLength) =
this._headers[this._headers.length] =3D {h:'Content-length', v:val};=0A=
      val =3D conn.getContentType();=0A=
      if (val !=3D null && !gotContentType) =
this._headers[this._headers.length] =3D {h:'Content-type', v:val};=0A=
      val =3D conn.getDate();=0A=
      if (val !=3D 0 && !gotDate) this._headers[this._headers.length] =
=3D {h:'Date', v:(new Date(val)).toUTCString()};=0A=
      val =3D conn.getExpiration();=0A=
      if (val !=3D 0 && !gotExpiration) =
this._headers[this._headers.length] =3D {h:'Expires', v:(new =
Date(val)).toUTCString()};=0A=
      val =3D conn.getLastModified();=0A=
      if (val !=3D 0 && !gotLastModified) =
this._headers[this._headers.length] =3D {h:'Last-modified', v:(new =
Date(val)).toUTCString()};=0A=
      // read response data=0A=
      var reqdata =3D '';=0A=
      var stream =3D conn.getInputStream();=0A=
      if (stream) {=0A=
        var reader =3D new java.io.BufferedReader(new =
java.io.InputStreamReader(stream, this._getCharset()));=0A=
        var line;=0A=
        while ((line =3D reader.readLine()) !=3D null) {=0A=
          if (this.readyState =3D=3D 2) {=0A=
            this.readyState =3D 3;=0A=
            if (this.onreadystatechange) {=0A=
              this.onreadystatechange();=0A=
            }=0A=
          }=0A=
          reqdata +=3D line + '\n';=0A=
        }=0A=
        reader.close();=0A=
        this.status =3D 200;=0A=
        this.statusText =3D 'OK';=0A=
        this.responseText =3D reqdata;=0A=
        this.readyState =3D 4;=0A=
        if (this.onreadystatechange) {=0A=
          this.onreadystatechange();=0A=
        }=0A=
        if (this.onload) {=0A=
          this.onload();=0A=
        }=0A=
      } else {=0A=
        // error=0A=
        this.status =3D 404;=0A=
        this.statusText =3D 'Not Found';=0A=
        this.responseText =3D '';=0A=
        this.readyState =3D 4;=0A=
        if (this.onreadystatechange) {=0A=
          this.onreadystatechange();=0A=
        }=0A=
        if (this.onerror) {=0A=
          this.onerror();=0A=
        }=0A=
      }=0A=
    };=0A=
  };=0A=
}=0A=
// ActiveXObject emulation=0A=
if (!window.ActiveXObject && window.XMLHttpRequest) {=0A=
  window.ActiveXObject =3D function(type) {=0A=
    switch (type.toLowerCase()) {=0A=
      case 'microsoft.xmlhttp':=0A=
      case 'msxml2.xmlhttp':=0A=
      case 'msxml2.xmlhttp.3.0':=0A=
      case 'msxml2.xmlhttp.4.0':=0A=
      case 'msxml2.xmlhttp.5.0':=0A=
        return new XMLHttpRequest();=0A=
    }=0A=
    return null;=0A=
  };=0A=
}=0A=

------=_NextPart_000_0000_01C85870.B701F780
Content-Type: application/octet-stream
Content-Transfer-Encoding: quoted-printable
Content-Location: http://cancerres.aacrjournals.org/javascript/ajax/utility.js

/************************************************************************=
*****=0A=
 * javascript/ajax/utility.js=0A=
 *=0A=
 * Utility functions for working with XMLHttpRequest data.=0A=
 *=0A=
 * Copyright 2006 Board of Trustees of the Leland Stanford Junior =
University.=0A=
 =
*************************************************************************=
***/=0A=
=0A=
/*=0A=
 * Copy XML nodes into an HTMLElement. This effectively=0A=
 * clones XML markup which uses XHTML naming conventions=0A=
 * into an HTML DOM.=0A=
 */=0A=
function copy_xml_to_html(src, dst) {=0A=
  if (src.nodeType =3D=3D 1) { /* Node.ELEMENT_NODE */=0A=
    var e =3D document.createElement(src.nodeName);=0A=
    for (var i =3D 0; i < src.childNodes.length; i++) {=0A=
	  copy_xml_to_html(src.childNodes[i], e);=0A=
    }=0A=
    for (var i =3D 0; i < src.attributes.length; i++) {=0A=
      var n =3D src.attributes[i].name;=0A=
      var v =3D unescape_xml_string(src.attributes[i].value);      =0A=
      e.setAttribute(n, v);=0A=
      if (n =3D=3D "class") {=0A=
        e.className =3D v;=0A=
      }=0A=
      else if (n =3D=3D "style") {=0A=
        set_css_style(v, e, "");=0A=
      }=0A=
    }=0A=
    dst.appendChild(e);=0A=
  }=0A=
  else if (src.nodeType =3D=3D 3) { /* Node.TEXT_NODE */=0A=
    dst.appendChild(document.createTextNode(src.nodeValue));=0A=
  }=0A=
}=0A=
=0A=
/* =0A=
 * It is unclear that this is the right thing to be calling=0A=
 * from copy_xml_to_html, but it appears that Safari decides=0A=
 * to convert &amp; to the NCR &#35;, and then encodes that=0A=
 * NCR to &%26%2338;.  So, I'm going to treat the DOM Attr=0A=
 * value as a plain string, and run our XML string input=0A=
 * through the decoding routine below.=0A=
 */=0A=
function unescape_xml_string(s) {=0A=
  return s.replace(/&apos;/g, "'")=0A=
          .replace(/&#39;/g,  "'")=0A=
          .replace(/&quot;/g, "\"")=0A=
          .replace(/&#34;/g,  "\"")=0A=
          .replace(/&gt;/g,   ">")=0A=
          .replace(/&#62;/g,  ">")=0A=
          .replace(/&lt;/g,   "<")=0A=
          .replace(/&#60;/g,  "<")=0A=
          .replace(/&amp;/g,  "&")=0A=
          .replace(/&#38;/g,  "&");=0A=
}=0A=
=0A=
/*=0A=
 * Parse set of CSS rules and apply them to an element.=0A=
 * This is quite horrifying, but I'm unable to determine=0A=
 * how else to handle this with IE 6.  FireFox and other=0A=
 * sane browsers let you simply set the style attribute=0A=
 * or use e.style.setProperty(rule, value, priority),=0A=
 * IE 6 appears to have neither of these capabilities..=0A=
 */=0A=
function set_css_style(css, e, priority) {=0A=
  var rules =3D css.split(";");=0A=
  for (var i =3D 0; i < rules.length; i++) {=0A=
    var nvpair =3D rules[i].split(":");=0A=
    if (nvpair.length =3D=3D 2) {=0A=
      try {=0A=
        var name  =3D nvpair[0]; /* style attribute */=0A=
        var value =3D nvpair[1]; /* attribute value */=0A=
  =0A=
        /*=0A=
         * For each possible style attribute, set the=0A=
         * appropriate style property in the element.=0A=
         */=0A=
        if (name =3D=3D "background") {=0A=
           e.style.background =3D value;=0A=
        }=0A=
        else if (name =3D=3D "background-attachment") {=0A=
          e.style.backgroundAttachment =3D value;=0A=
        }=0A=
        else if (name =3D=3D "background-color") {=0A=
          e.style.backgroundColor =3D value;=0A=
        }=0A=
        else if (name =3D=3D "background-image") {=0A=
          e.style.backgroundImage =3D value;=0A=
        }=0A=
        else if (name =3D=3D "background-position") {=0A=
          e.style.backgroundPosition =3D value;=0A=
        }=0A=
        else if (name =3D=3D "background-position-x") {=0A=
          e.style.backgroundPositionX =3D value;=0A=
        }=0A=
        else if (name =3D=3D "background-position-y") {=0A=
          e.style.backgroundPositionY =3D value;=0A=
        }=0A=
        else if (name =3D=3D "background-repeat") {=0A=
          e.style.backgroundRepeat =3D value;=0A=
        }=0A=
        else if (name =3D=3D "behavior") {=0A=
          e.style.behavior =3D value;=0A=
        }=0A=
        else if (name =3D=3D "border") {=0A=
          e.style.border =3D value;=0A=
        }=0A=
        else if (name =3D=3D "border-bottom") {=0A=
          e.style.borderBottom =3D value;=0A=
        }=0A=
        else if (name =3D=3D "border-bottom-color") {=0A=
          e.style.borderBottomColor =3D value;=0A=
        }=0A=
        else if (name =3D=3D "border-bottom-style") {=0A=
          e.style.borderBottomStyle =3D value;=0A=
        }=0A=
        else if (name =3D=3D "border-bottom-width") {=0A=
          e.style.borderBottomWidth =3D value;=0A=
        }=0A=
        else if (name =3D=3D "border-collapse") {=0A=
          e.style.borderCollapse =3D value;=0A=
        }=0A=
        else if (name =3D=3D "border-color") {=0A=
          e.style.borderColor =3D value;=0A=
        }=0A=
        else if (name =3D=3D "border-left") {=0A=
          e.style.borderLeft =3D value;=0A=
        }=0A=
        else if (name =3D=3D "border-left-color") {=0A=
          e.style.borderLeftColor =3D value;=0A=
        }=0A=
        else if (name =3D=3D "border-left-style") {=0A=
          e.style.borderLeftStyle =3D value;=0A=
        }=0A=
        else if (name =3D=3D "border-left-width") {=0A=
          e.style.borderLeftWidth =3D value;=0A=
        }=0A=
        else if (name =3D=3D "border-right") {=0A=
          e.style.borderRight =3D value;=0A=
        }=0A=
        else if (name =3D=3D "border-right-color") {=0A=
          e.style.borderRightColor =3D value;=0A=
        }=0A=
        else if (name =3D=3D "border-right-style") {=0A=
          e.style.borderRightStyle =3D value;=0A=
        }=0A=
        else if (name =3D=3D "border-right-width") {=0A=
          e.style.borderRightWidth =3D value;=0A=
        }=0A=
        else if (name =3D=3D "border-style") {=0A=
          e.style.borderStyle =3D value;=0A=
        }=0A=
        else if (name =3D=3D "border-top") {=0A=
          e.style.borderTop =3D value;=0A=
        }=0A=
        else if (name =3D=3D "border-top-color") {=0A=
          e.style.borderTopColor =3D value;=0A=
        }=0A=
        else if (name =3D=3D "border-top-style") {=0A=
          e.style.borderTopStyle =3D value;=0A=
        }=0A=
        else if (name =3D=3D "border-top-width") {=0A=
          e.style.borderTopWidth =3D value;=0A=
        }=0A=
        else if (name =3D=3D "border-width") {=0A=
          e.style.borderWidth =3D value;=0A=
        }=0A=
        else if (name =3D=3D "bottom") {=0A=
          e.style.bottom =3D value;=0A=
        }=0A=
        else if (name =3D=3D "clear") {=0A=
          e.style.clear =3D value;=0A=
        }=0A=
        else if (name =3D=3D "clip") {=0A=
          e.style.clip =3D value;=0A=
        }=0A=
        else if (name =3D=3D "color") {=0A=
          e.style.color =3D value;=0A=
        }=0A=
        else if (name =3D=3D "cssText") {=0A=
          e.style.Sets =3D value;=0A=
        }=0A=
        else if (name =3D=3D "cursor") {=0A=
          e.style.cursor =3D value;=0A=
        }=0A=
        else if (name =3D=3D "direction") {=0A=
          e.style.direction =3D value;=0A=
        }=0A=
        else if (name =3D=3D "display") {=0A=
          e.style.display =3D value;=0A=
        }=0A=
        else if (name =3D=3D "font") {=0A=
          e.style.font =3D value;=0A=
        }=0A=
        else if (name =3D=3D "font-family") {=0A=
          e.style.fontFamily =3D value;=0A=
        }=0A=
        else if (name =3D=3D "font-size") {=0A=
          e.style.fontSize =3D value;=0A=
        }=0A=
        else if (name =3D=3D "font-style") {=0A=
          e.style.fontStyle =3D value;=0A=
        }=0A=
        else if (name =3D=3D "font-variant") {=0A=
          e.style.fontVariant =3D value;=0A=
        }=0A=
        else if (name =3D=3D "font-weight") {=0A=
          e.style.fontWeight =3D value;=0A=
        }=0A=
        else if (name =3D=3D "height") {=0A=
          e.style.height =3D value;=0A=
        }=0A=
        else if (name =3D=3D "ime-mode") {=0A=
          e.style.imeMode =3D value;=0A=
        }=0A=
        else if (name =3D=3D "layout-flow") {=0A=
          e.style.layoutFlow =3D value;=0A=
        }=0A=
        else if (name =3D=3D "layout-grid") {=0A=
          e.style.layoutGrid =3D value;=0A=
        }=0A=
        else if (name =3D=3D "layout-grid-char") {=0A=
          e.style.layoutGridChar =3D value;=0A=
        }=0A=
        else if (name =3D=3D "layout-grid-line") {=0A=
          e.style.layoutGridLine =3D value;=0A=
        }=0A=
        else if (name =3D=3D "layout-grid-mode") {=0A=
          e.style.layoutGridMode =3D value;=0A=
        }=0A=
        else if (name =3D=3D "layout-grid-type") {=0A=
          e.style.layoutGridType =3D value;=0A=
        }=0A=
        else if (name =3D=3D "left") {=0A=
          e.style.left =3D value;=0A=
        }=0A=
        else if (name =3D=3D "letter-spacing") {=0A=
          e.style.letterSpacing =3D value;=0A=
        }=0A=
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------=_NextPart_000_0000_01C85870.B701F780
Content-Type: application/octet-stream
Content-Transfer-Encoding: quoted-printable
Content-Location: http://cancerres.aacrjournals.org/javascript/entrez/callback.js

/************************************************************************=
*****=0A=
 * javascript/entrez/callback.js=0A=
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 * Entrez Linking callback to populate content box.=0A=
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 * Copyright 2006 Board of Trustees of the Leland Stanford Junior =
University.=0A=
 =
*************************************************************************=
***/=0A=
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/*=0A=
 * Execute callback to fill content box with Entrez Linking information.=0A=
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function entrez_callback(pmid, callback_url) {=0A=
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   * used for Entrez Linking. For now we have to disable=0A=
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------=_NextPart_000_0000_01C85870.B701F780
Content-Type: application/octet-stream
Content-Transfer-Encoding: quoted-printable
Content-Location: http://www.google-analytics.com/urchin.js

//-- Google Analytics Urchin Module=0A=
//-- Copyright 2007 Google, All Rights Reserved.=0A=
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//-- Urchin On Demand Settings ONLY=0A=
var _uacct=3D"";			// set up the Urchin Account=0A=
var _userv=3D1;			// service mode (0=3Dlocal,1=3Dremote,2=3Dboth)=0A=
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//-- UTM User Settings=0A=
var _ufsc=3D1;			// set client info flag (1=3Don|0=3Doff)=0A=
var _udn=3D"auto";		// (auto|none|domain) set the domain name for cookies=0A=
var _uhash=3D"on";		// (on|off) unique domain hash for cookies=0A=
var _utimeout=3D"1800";   	// set the inactive session timeout in seconds=0A=
var _ugifpath=3D"/__utm.gif";	// set the web path to the __utm.gif file=0A=
var _utsp=3D"|";			// transaction field separator=0A=
var _uflash=3D1;			// set flash version detect option (1=3Don|0=3Doff)=0A=
var _utitle=3D1;			// set the document title detect option =
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var _ulink=3D0;			// enable linker functionality (1=3Don|0=3Doff)=0A=
var _uanchor=3D0;			// enable use of anchors for campaign =
(1=3Don|0=3Doff)=0A=
var _utcp=3D"/";			// the cookie path for tracking=0A=
var _usample=3D100;		// The sampling % of visitors to track (1-100).=0A=
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//-- UTM Campaign Tracking Settings=0A=
var _uctm=3D1;			// set campaign tracking module (1=3Don|0=3Doff)=0A=
var _ucto=3D"15768000";		// set timeout in seconds (6 month default)=0A=
var _uccn=3D"utm_campaign";	// name=0A=
var _ucmd=3D"utm_medium";		// medium (cpc|cpm|link|email|organic)=0A=
var _ucsr=3D"utm_source";		// source=0A=
var _uctr=3D"utm_term";		// term/keyword=0A=
var _ucct=3D"utm_content";	// content=0A=
var _ucid=3D"utm_id";		// id number=0A=
var _ucno=3D"utm_nooverride";	// don't override=0A=
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var _uOsr=3Dnew Array();=0A=
var _uOkw=3Dnew Array();=0A=
_uOsr[0]=3D"google";	_uOkw[0]=3D"q";=0A=
_uOsr[1]=3D"yahoo";	_uOkw[1]=3D"p";=0A=
_uOsr[2]=3D"msn";		_uOkw[2]=3D"q";=0A=
_uOsr[3]=3D"aol";		_uOkw[3]=3D"query";=0A=
_uOsr[4]=3D"aol";		_uOkw[4]=3D"encquery";=0A=
_uOsr[5]=3D"lycos";	_uOkw[5]=3D"query";=0A=
_uOsr[6]=3D"ask";		_uOkw[6]=3D"q";=0A=
_uOsr[7]=3D"altavista";	_uOkw[7]=3D"q";=0A=
_uOsr[8]=3D"netscape";	_uOkw[8]=3D"query";=0A=
_uOsr[9]=3D"cnn";	_uOkw[9]=3D"query";=0A=
_uOsr[10]=3D"looksmart";	_uOkw[10]=3D"qt";=0A=
_uOsr[11]=3D"about";	_uOkw[11]=3D"terms";=0A=
_uOsr[12]=3D"mamma";	_uOkw[12]=3D"query";=0A=
_uOsr[13]=3D"alltheweb";	_uOkw[13]=3D"q";=0A=
_uOsr[14]=3D"gigablast";	_uOkw[14]=3D"q";=0A=
_uOsr[15]=3D"voila";	_uOkw[15]=3D"rdata";=0A=
_uOsr[16]=3D"virgilio";	_uOkw[16]=3D"qs";=0A=
_uOsr[17]=3D"live";	_uOkw[17]=3D"q";=0A=
_uOsr[18]=3D"baidu";	_uOkw[18]=3D"wd";=0A=
_uOsr[19]=3D"alice";	_uOkw[19]=3D"qs";=0A=
_uOsr[20]=3D"yandex";	_uOkw[20]=3D"text";=0A=
_uOsr[21]=3D"najdi";	_uOkw[21]=3D"q";=0A=
_uOsr[22]=3D"aol";	_uOkw[22]=3D"q";=0A=
_uOsr[23]=3D"club-internet"; _uOkw[23]=3D"q";=0A=
_uOsr[24]=3D"mama";	_uOkw[24]=3D"query";=0A=
_uOsr[25]=3D"seznam";	_uOkw[25]=3D"q";=0A=
_uOsr[26]=3D"search";	_uOkw[26]=3D"q";=0A=
_uOsr[27]=3D"szukaj";	_uOkw[27]=3D"szukaj";=0A=
_uOsr[28]=3D"szukaj";	_uOkw[28]=3D"qt";=0A=
_uOsr[29]=3D"netsprint";	_uOkw[29]=3D"q";=0A=
_uOsr[30]=3D"google.interia";	_uOkw[30]=3D"q";=0A=
_uOsr[31]=3D"szukacz";	_uOkw[31]=3D"q";=0A=
_uOsr[32]=3D"yam";	_uOkw[32]=3D"k";=0A=
_uOsr[33]=3D"pchome";	_uOkw[33]=3D"q";=0A=
=0A=
=0A=
//-- Auto/Organic Keywords to Ignore=0A=
var _uOno=3Dnew Array();=0A=
//_uOno[0]=3D"urchin";=0A=
//_uOno[1]=3D"urchin.com";=0A=
//_uOno[2]=3D"www.urchin.com";=0A=
=0A=
//-- Referral domains to Ignore=0A=
var _uRno=3Dnew Array();=0A=
//_uRno[0]=3D".urchin.com";=0A=
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//-- **** Don't modify below this point ***=0A=
var =
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var _ugifpath2=3D"http://www.google-analytics.com/__utm.gif";=0A=
if (_udl.hash) _udlh=3D_udl.href.substring(_udl.href.indexOf('#'));=0A=
if (_udl.protocol=3D=3D"https:") =
_ugifpath2=3D"https://ssl.google-analytics.com/__utm.gif";=0A=
if (!_utcp || _utcp=3D=3D"") _utcp=3D"/";=0A=
function urchinTracker(page) {=0A=
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 a=3Ddc.indexOf("__utma=3D"+_udh);=0A=
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 if (_udn && _udn!=3D"") { _udo=3D" domain=3D"+_udn+";"; }=0A=
 if (_utimeout && _utimeout!=3D"") {=0A=
  x=3Dnew Date(_udt.getTime()+(_utimeout*1000));=0A=
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  if (_uanchor && _udlh && _udlh!=3D"") s=3D_udlh+"&";=0A=
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   if (!(_uIN(a=3D_uGC(s,"__utma=3D","&")))) a=3D"-";=0A=
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   v=3D_uGC(s,"__utmv=3D","&");=0A=
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   k=3D_uGC(s,"__utmk=3D","&");=0A=
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   if ((k*1) !=3D ((_uHash(a+b+c+xx+z+v)*1)+(_udh*1))) =
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  _ubd.cookie=3D"__utmb=3D"+b+"; path=3D"+_utcp+";"+x+_udo;=0A=
  _ubd.cookie=3D"__utmc=3D"+c+"; path=3D"+_utcp+";"+_udo;=0A=
 } else if (f=3D=3D2) {=0A=
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  _ubd.cookie=3D"__utma=3D"+a+"; path=3D"+_utcp+";"+nx+_udo;=0A=
  _ubd.cookie=3D"__utmb=3D"+_udh+"; path=3D"+_utcp+";"+x+_udo;=0A=
  _ubd.cookie=3D"__utmc=3D"+_udh+"; path=3D"+_utcp+";"+_udo;=0A=
  _ufns=3D1;=0A=
 } else if (a>=3D0 && b>=3D0 && c>=3D0) {=0A=
  _ubd.cookie=3D"__utmb=3D"+_udh+"; path=3D"+_utcp+";"+x+_udo;=0A=
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  if (a>=3D0) a=3D_uFixA(_ubd.cookie,";",_ust);=0A=
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  _ubd.cookie=3D"__utma=3D"+a+"; path=3D"+_utcp+";"+nx+_udo;=0A=
  _ubd.cookie=3D"__utmb=3D"+_udh+"; path=3D"+_utcp+";"+x+_udo;=0A=
  _ubd.cookie=3D"__utmc=3D"+_udh+"; path=3D"+_utcp+";"+_udo;=0A=
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 }=0A=
 if (_ulink && xx && xx!=3D"" && xx!=3D"-") {=0A=
   xx=3D_uUES(xx);=0A=
   if (xx.indexOf(";")=3D=3D-1) _ubd.cookie=3D"__utmx=3D"+xx+"; =
path=3D"+_utcp+";"+nx+_udo;=0A=
 }=0A=
 if (_ulink && v && v!=3D"" && v!=3D"-") {=0A=
  v=3D_uUES(v);=0A=
  if (v.indexOf(";")=3D=3D-1) _ubd.cookie=3D"__utmv=3D"+v+"; =
path=3D"+_utcp+";"+nx+_udo;=0A=
 }=0A=
 _uInfo(page);=0A=
 _ufns=3D0;=0A=
 _ufno=3D0;=0A=
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}=0A=
function _uInfo(page) {=0A=
 var p,s=3D"",dm=3D"",pg=3D_udl.pathname+_udl.search;=0A=
 if (page && page!=3D"") pg=3D_uES(page,1);=0A=
 _ur=3D_ubd.referrer;=0A=
 if (!_ur || _ur=3D=3D"") { _ur=3D"-"; }=0A=
 else {=0A=
  dm=3D_ubd.domain;=0A=
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  p=3D_ur.indexOf(dm);=0A=
  if ((p>=3D0) && (p<=3D8)) { _ur=3D"0"; }=0A=
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_ur.lastIndexOf("]")=3D=3D(_ur.length-1)) { _ur=3D"-"; }=0A=
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 s+=3D"&utmn=3D"+_uu;=0A=
 if (_ufsc) s+=3D_uBInfo();=0A=
 if (_uctm) s+=3D_uCInfo();=0A=
 if (_utitle && _ubd.title && _ubd.title!=3D"") =
s+=3D"&utmdt=3D"+_uES(_ubd.title);=0A=
 if (_udl.hostname && _udl.hostname!=3D"") =
s+=3D"&utmhn=3D"+_uES(_udl.hostname);=0A=
 s+=3D"&utmr=3D"+_ur;=0A=
 s+=3D"&utmp=3D"+pg;=0A=
 if ((_userv=3D=3D0 || _userv=3D=3D2) && _uSP()) {=0A=
  var i=3Dnew Image(1,1);=0A=
  i.src=3D_ugifpath+"?"+"utmwv=3D"+_uwv+s;=0A=
  i.onload=3Dfunction() {_uVoid();}=0A=
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 if ((_userv=3D=3D1 || _userv=3D=3D2) && _uSP()) {=0A=
  var i2=3Dnew Image(1,1);=0A=
  =
i2.src=3D_ugifpath2+"?"+"utmwv=3D"+_uwv+s+"&utmac=3D"+_uacct+"&utmcc=3D"+=
_uGCS();=0A=
  i2.onload=3Dfunction() { _uVoid(); }=0A=
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 return;=0A=
}=0A=
function _uVoid() { return; }=0A=
function _uCInfo() {=0A=
 if (!_ucto || _ucto=3D=3D"") { _ucto=3D"15768000"; }=0A=
 if (!_uVG()) return;=0A=
 var =
c=3D"",t=3D"-",t2=3D"-",t3=3D"-",o=3D0,cs=3D0,cn=3D0,i=3D0,z=3D"-",s=3D""=
;=0A=
 if (_uanchor && _udlh && _udlh!=3D"") s=3D_udlh+"&";=0A=
 s+=3D_udl.search;=0A=
 var x=3Dnew Date(_udt.getTime()+(_ucto*1000));=0A=
 var dc=3D_ubd.cookie;=0A=
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 if (_ulink && !_ubl) {=0A=
  z=3D_uUES(_uGC(s,"__utmz=3D","&"));=0A=
  if (z!=3D"-" && z.indexOf(";")=3D=3D-1) { =
_ubd.cookie=3D"__utmz=3D"+z+"; path=3D"+_utcp+";"+x+_udo; return ""; }=0A=
 }=0A=
 z=3Ddc.indexOf("__utmz=3D"+_udh);=0A=
 if (z>-1) { z=3D_uGC(dc,"__utmz=3D"+_udh,";"); }=0A=
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 t2=3D_uGC(s,_ucsr+"=3D","&");=0A=
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 if ((t!=3D"-" && t!=3D"") || (t2!=3D"-" && t2!=3D"") || (t3!=3D"-" && =
t3!=3D"")) {=0A=
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  if (t2!=3D"-" && t2!=3D"") { if (c !=3D "") c+=3D"|"; =
c+=3D"utmcsr=3D"+_uEC(t2); }=0A=
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c+=3D"utmgclid=3D"+_uEC(t3); }=0A=
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  t=3D_uGC(s,_ucmd+"=3D","&");=0A=
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  t=3D_uGC(s,_uctr+"=3D","&");=0A=
  if (t!=3D"-" && t!=3D"") c+=3D"|utmctr=3D"+_uEC(t);=0A=
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c+=3D"|utmctr=3D"+_uEC(t); }=0A=
  t=3D_uGC(s,_ucct+"=3D","&");=0A=
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  t=3D_uGC(s,_ucno+"=3D","&");=0A=
  if (t=3D=3D"1") o=3D1;=0A=
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 if (c=3D=3D"-" || c=3D=3D"") { c=3D_uOrg(); if (z!=3D"-" && =
_ufno=3D=3D1)  return ""; }=0A=
 if (c=3D=3D"-" || c=3D=3D"") { if (_ufns=3D=3D1)  c=3D_uRef(); if =
(z!=3D"-" && _ufno=3D=3D1)  return ""; }=0A=
 if (c=3D=3D"-" || c=3D=3D"") {=0A=
  if (z=3D=3D"-" && _ufns=3D=3D1) { =
c=3D"utmccn=3D(direct)|utmcsr=3D(direct)|utmcmd=3D(none)"; }=0A=
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 }=0A=
 if (z!=3D"-") {=0A=
  i=3Dz.indexOf(".");=0A=
  if (i>-1) i=3Dz.indexOf(".",i+1);=0A=
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  t=3Dz.substring(i+1,z.length);=0A=
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  t=3Dz.substring(0,i);=0A=
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   t=3Dt.substring(i+1,t.length);=0A=
   cn=3D(t*1);=0A=
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 }=0A=
 if (cs=3D=3D0 || _ufns=3D=3D1) {=0A=
  t=3D_uGC(dc,"__utma=3D"+_udh,";");=0A=
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   _uns=3Dt.substring(i+1,t.length);=0A=
   _uns=3D(_uns*1);=0A=
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  cn++;=0A=
  if (_uns=3D=3D0) _uns=3D1;=0A=
  _ubd.cookie=3D"__utmz=3D"+_udh+"."+_ust+"."+_uns+"."+cn+"."+c+"; =
path=3D"+_utcp+"; "+x+_udo;=0A=
 }=0A=
 if (cs=3D=3D0 || _ufns=3D=3D1) return "&utmcn=3D1";=0A=
 else return "&utmcr=3D1";=0A=
}=0A=
function _uRef() {=0A=
 if (_ur=3D=3D"0" || _ur=3D=3D"" || _ur=3D=3D"-") return "";=0A=
 var i=3D0,h,k,n;=0A=
 if ((i=3D_ur.indexOf("://"))<0) return "";=0A=
 h=3D_ur.substring(i+3,_ur.length);=0A=
 if (h.indexOf("/") > -1) {=0A=
  k=3Dh.substring(h.indexOf("/"),h.length);=0A=
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 }=0A=
 h=3Dh.toLowerCase();=0A=
 n=3Dh;=0A=
 if ((i=3Dn.indexOf(":")) > -1) n=3Dn.substring(0,i);=0A=
 for (var ii=3D0;ii<_uRno.length;ii++) {=0A=
  if ((i=3Dn.indexOf(_uRno[ii].toLowerCase())) > -1 && =
n.length=3D=3D(i+_uRno[ii].length)) { _ufno=3D1; break; }=0A=
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 if (h.indexOf("www.")=3D=3D0) h=3Dh.substring(4,h.length);=0A=
 return =
"utmccn=3D(referral)|utmcsr=3D"+_uEC(h)+"|"+"utmcct=3D"+_uEC(k)+"|utmcmd=3D=
referral";=0A=
}=0A=
function _uOrg(t) {=0A=
 if (_ur=3D=3D"0" || _ur=3D=3D"" || _ur=3D=3D"-") return "";=0A=
 var i=3D0,h,k;=0A=
 if ((i=3D_ur.indexOf("://")) < 0) return "";=0A=
 h=3D_ur.substring(i+3,_ur.length);=0A=
 if (h.indexOf("/") > -1) {=0A=
  h=3Dh.substring(0,h.indexOf("/"));=0A=
 }=0A=
 for (var ii=3D0;ii<_uOsr.length;ii++) {=0A=
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   if ((i=3D_ur.indexOf("?"+_uOkw[ii]+"=3D")) > -1 || =
(i=3D_ur.indexOf("&"+_uOkw[ii]+"=3D")) > -1) {=0A=
    k=3D_ur.substring(i+_uOkw[ii].length+2,_ur.length);=0A=
    if ((i=3Dk.indexOf("&")) > -1) k=3Dk.substring(0,i);=0A=
    for (var yy=3D0;yy<_uOno.length;yy++) {=0A=
     if (_uOno[yy].toLowerCase()=3D=3Dk.toLowerCase()) { _ufno=3D1; =
break; }=0A=
    }=0A=
    if (t) return _uEC(k);=0A=
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"utmccn=3D(organic)|utmcsr=3D"+_uEC(_uOsr[ii])+"|"+"utmctr=3D"+_uEC(k)+"|=
utmcmd=3Dorganic";=0A=
   }=0A=
  }=0A=
 }=0A=
 return "";=0A=
}=0A=
function _uBInfo() {=0A=
 var sr=3D"-",sc=3D"-",ul=3D"-",fl=3D"-",cs=3D"-",je=3D1;=0A=
 var n=3Dnavigator;=0A=
 if (self.screen) {=0A=
  sr=3Dscreen.width+"x"+screen.height;=0A=
  sc=3Dscreen.colorDepth+"-bit";=0A=
 } else if (self.java) {=0A=
  var j=3Djava.awt.Toolkit.getDefaultToolkit();=0A=
  var s=3Dj.getScreenSize();=0A=
  sr=3Ds.width+"x"+s.height;=0A=
 }=0A=
 if (n.language) { ul=3Dn.language.toLowerCase(); }=0A=
 else if (n.browserLanguage) { ul=3Dn.browserLanguage.toLowerCase(); }=0A=
 je=3Dn.javaEnabled()?1:0;=0A=
 if (_uflash) fl=3D_uFlash();=0A=
 if (_ubd.characterSet) cs=3D_uES(_ubd.characterSet);=0A=
 else if (_ubd.charset) cs=3D_uES(_ubd.charset);=0A=
 return =
"&utmcs=3D"+cs+"&utmsr=3D"+sr+"&utmsc=3D"+sc+"&utmul=3D"+ul+"&utmje=3D"+j=
e+"&utmfl=3D"+fl;=0A=
}=0A=
function __utmSetTrans() {=0A=
 var e;=0A=
 if (_ubd.getElementById) e=3D_ubd.getElementById("utmtrans");=0A=
 else if (_ubd.utmform && _ubd.utmform.utmtrans) =
e=3D_ubd.utmform.utmtrans;=0A=
 if (!e) return;=0A=
 var l=3De.value.split("UTM:");=0A=
 var i,i2,c;=0A=
 if (_userv=3D=3D0 || _userv=3D=3D2) i=3Dnew Array();=0A=
 if (_userv=3D=3D1 || _userv=3D=3D2) { i2=3Dnew Array(); c=3D_uGCS(); }=0A=
=0A=
 for (var ii=3D0;ii<l.length;ii++) {=0A=
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  var r=3DMath.round(Math.random()*2147483647);=0A=
  if (!_utsp || _utsp=3D=3D"") _utsp=3D"|";=0A=
  var f=3Dl[ii].split(_utsp),s=3D"";=0A=
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   s=3D"&utmt=3Dtran"+"&utmn=3D"+r;=0A=
   f[1]=3D_uTrim(f[1]); if(f[1]&&f[1]!=3D"") =
s+=3D"&utmtid=3D"+_uES(f[1]);=0A=
   f[2]=3D_uTrim(f[2]); if(f[2]&&f[2]!=3D"") =
s+=3D"&utmtst=3D"+_uES(f[2]);=0A=
   f[3]=3D_uTrim(f[3]); if(f[3]&&f[3]!=3D"") =
s+=3D"&utmtto=3D"+_uES(f[3]);=0A=
   f[4]=3D_uTrim(f[4]); if(f[4]&&f[4]!=3D"") =
s+=3D"&utmttx=3D"+_uES(f[4]);=0A=
   f[5]=3D_uTrim(f[5]); if(f[5]&&f[5]!=3D"") =
s+=3D"&utmtsp=3D"+_uES(f[5]);=0A=
   f[6]=3D_uTrim(f[6]); if(f[6]&&f[6]!=3D"") =
s+=3D"&utmtci=3D"+_uES(f[6]);=0A=
   f[7]=3D_uTrim(f[7]); if(f[7]&&f[7]!=3D"") =
s+=3D"&utmtrg=3D"+_uES(f[7]);=0A=
   f[8]=3D_uTrim(f[8]); if(f[8]&&f[8]!=3D"") =
s+=3D"&utmtco=3D"+_uES(f[8]);=0A=
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   s=3D"&utmt=3Ditem"+"&utmn=3D"+r;=0A=
   f[1]=3D_uTrim(f[1]); if(f[1]&&f[1]!=3D"") =
s+=3D"&utmtid=3D"+_uES(f[1]);=0A=
   f[2]=3D_uTrim(f[2]); if(f[2]&&f[2]!=3D"") =
s+=3D"&utmipc=3D"+_uES(f[2]);=0A=
   f[3]=3D_uTrim(f[3]); if(f[3]&&f[3]!=3D"") =
s+=3D"&utmipn=3D"+_uES(f[3]);=0A=
   f[4]=3D_uTrim(f[4]); if(f[4]&&f[4]!=3D"") =
s+=3D"&utmiva=3D"+_uES(f[4]);=0A=
   f[5]=3D_uTrim(f[5]); if(f[5]&&f[5]!=3D"") =
s+=3D"&utmipr=3D"+_uES(f[5]);=0A=
   f[6]=3D_uTrim(f[6]); if(f[6]&&f[6]!=3D"") =
s+=3D"&utmiqt=3D"+_uES(f[6]);=0A=
  }=0A=
  if ((_userv=3D=3D0 || _userv=3D=3D2) && _uSP()) {=0A=
   i[ii]=3Dnew Image(1,1);=0A=
   i[ii].src=3D_ugifpath+"?"+"utmwv=3D"+_uwv+s;=0A=
   i[ii].onload=3Dfunction() { _uVoid(); }=0A=
  }=0A=
  if ((_userv=3D=3D1 || _userv=3D=3D2) && _uSP()) {=0A=
   i2[ii]=3Dnew Image(1,1);=0A=
   =
i2[ii].src=3D_ugifpath2+"?"+"utmwv=3D"+_uwv+s+"&utmac=3D"+_uacct+"&utmcc=3D=
"+c;=0A=
   i2[ii].onload=3Dfunction() { _uVoid(); }=0A=
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 }=0A=
 return;=0A=
}=0A=
function _uFlash() {=0A=
 var f=3D"-",n=3Dnavigator;=0A=
 if (n.plugins && n.plugins.length) {=0A=
  for (var ii=3D0;ii<n.plugins.length;ii++) {=0A=
   if (n.plugins[ii].name.indexOf('Shockwave Flash')!=3D-1) {=0A=
    f=3Dn.plugins[ii].description.split('Shockwave Flash ')[1];=0A=
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   }=0A=
  }=0A=
 } else if (window.ActiveXObject) {=0A=
  for (var ii=3D10;ii>=3D2;ii--) {=0A=
   try {=0A=
    var fl=3Deval("new =
ActiveXObject('ShockwaveFlash.ShockwaveFlash."+ii+"');");=0A=
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   }=0A=
   catch(e) {}=0A=
  }=0A=
 }=0A=
 return f;=0A=
}=0A=
function __utmLinker(l,h) {=0A=
 if (!_ulink) return;=0A=
 var p,k,a=3D"-",b=3D"-",c=3D"-",x=3D"-",z=3D"-",v=3D"-";=0A=
 var dc=3D_ubd.cookie;=0A=
 if (!l || l=3D=3D"") return;=0A=
 var iq =3D l.indexOf("?"); =0A=
 var ih =3D l.indexOf("#"); =0A=
 if (dc) {=0A=
  a=3D_uES(_uGC(dc,"__utma=3D"+_udh,";"));=0A=
  b=3D_uES(_uGC(dc,"__utmb=3D"+_udh,";"));=0A=
  c=3D_uES(_uGC(dc,"__utmc=3D"+_udh,";"));=0A=
  x=3D_uES(_uGC(dc,"__utmx=3D"+_udh,";"));=0A=
  z=3D_uES(_uGC(dc,"__utmz=3D"+_udh,";"));=0A=
  v=3D_uES(_uGC(dc,"__utmv=3D"+_udh,";"));=0A=
  k=3D(_uHash(a+b+c+x+z+v)*1)+(_udh*1);=0A=
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p=3D"__utma=3D"+a+"&__utmb=3D"+b+"&__utmc=3D"+c+"&__utmx=3D"+x+"&__utmz=3D=
"+z+"&__utmv=3D"+v+"&__utmk=3D"+k;=0A=
 }=0A=
 if (p) {=0A=
  if (h && ih>-1) return;=0A=
  if (h) { _udl.href=3Dl+"#"+p; }=0A=
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   if (iq=3D=3D-1 && ih=3D=3D-1) _udl.href=3Dl+"?"+p;=0A=
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   else if (iq=3D=3D-1) =
_udl.href=3Dl.substring(0,ih-1)+"?"+p+l.substring(ih);=0A=
   else _udl.href=3Dl.substring(0,ih-1)+"&"+p+l.substring(ih);=0A=
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 } else { _udl.href=3Dl; }=0A=
}=0A=
function __utmLinkPost(f,h) {=0A=
 if (!_ulink) return;=0A=
 var p,k,a=3D"-",b=3D"-",c=3D"-",x=3D"-",z=3D"-",v=3D"-";=0A=
 var dc=3D_ubd.cookie;=0A=
 if (!f || !f.action) return;=0A=
 var iq =3D f.action.indexOf("?"); =0A=
 var ih =3D f.action.indexOf("#"); =0A=
 if (dc) {=0A=
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  b=3D_uES(_uGC(dc,"__utmb=3D"+_udh,";"));=0A=
  c=3D_uES(_uGC(dc,"__utmc=3D"+_udh,";"));=0A=
  x=3D_uES(_uGC(dc,"__utmx=3D"+_udh,";"));=0A=
  z=3D_uES(_uGC(dc,"__utmz=3D"+_udh,";"));=0A=
  v=3D_uES(_uGC(dc,"__utmv=3D"+_udh,";"));=0A=
  k=3D(_uHash(a+b+c+x+z+v)*1)+(_udh*1);=0A=
  =
p=3D"__utma=3D"+a+"&__utmb=3D"+b+"&__utmc=3D"+c+"&__utmx=3D"+x+"&__utmz=3D=
"+z+"&__utmv=3D"+v+"&__utmk=3D"+k;=0A=
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 if (p) {=0A=
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   else if (iq=3D=3D-1) =
f.action=3Df.action.substring(0,ih-1)+"?"+p+f.action.substring(ih);=0A=
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f.action=3Df.action.substring(0,ih-1)+"&"+p+f.action.substring(ih);=0A=
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}=0A=
function __utmSetVar(v) {=0A=
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 var r=3DMath.round(Math.random() * 2147483647);=0A=
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expires=3D"+_uNx()+";"+_udo;=0A=
 var s=3D"&utmt=3Dvar&utmn=3D"+r;=0A=
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  var i=3Dnew Image(1,1);=0A=
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 if ((_userv=3D=3D1 || _userv=3D=3D2) && _uSP()) {=0A=
  var i2=3Dnew Image(1,1);=0A=
  =
i2.src=3D_ugifpath2+"?"+"utmwv=3D"+_uwv+s+"&utmac=3D"+_uacct+"&utmcc=3D"+=
_uGCS();=0A=
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 }=0A=
}=0A=
function _uGCS() {=0A=
 var t,c=3D"",dc=3D_ubd.cookie;=0A=
 if ((t=3D_uGC(dc,"__utma=3D"+_udh,";"))!=3D"-") =
c+=3D_uES("__utma=3D"+t+";+");=0A=
 if ((t=3D_uGC(dc,"__utmb=3D"+_udh,";"))!=3D"-") =
c+=3D_uES("__utmb=3D"+t+";+");=0A=
 if ((t=3D_uGC(dc,"__utmc=3D"+_udh,";"))!=3D"-") =
c+=3D_uES("__utmc=3D"+t+";+");=0A=
 if ((t=3D_uGC(dc,"__utmx=3D"+_udh,";"))!=3D"-") =
c+=3D_uES("__utmx=3D"+t+";+");=0A=
 if ((t=3D_uGC(dc,"__utmz=3D"+_udh,";"))!=3D"-") =
c+=3D_uES("__utmz=3D"+t+";+");=0A=
 if ((t=3D_uGC(dc,"__utmv=3D"+_udh,";"))!=3D"-") =
c+=3D_uES("__utmv=3D"+t+";");=0A=
 if (c.charAt(c.length-1)=3D=3D"+") c=3Dc.substring(0,c.length-1);=0A=
 return c;=0A=
}=0A=
function _uGC(l,n,s) {=0A=
 if (!l || l=3D=3D"" || !n || n=3D=3D"" || !s || s=3D=3D"") return "-";=0A=
 var i,i2,i3,c=3D"-";=0A=
 i=3Dl.indexOf(n);=0A=
 i3=3Dn.indexOf("=3D")+1;=0A=
 if (i > -1) {=0A=
  i2=3Dl.indexOf(s,i); if (i2 < 0) { i2=3Dl.length; }=0A=
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 return c;=0A=
}=0A=
function _uDomain() {=0A=
 if (!_udn || _udn=3D=3D"" || _udn=3D=3D"none") { _udn=3D""; return 1; }=0A=
 if (_udn=3D=3D"auto") {=0A=
  var d=3D_ubd.domain;=0A=
  if (d.substring(0,4)=3D=3D"www.") {=0A=
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  _udn=3Dd;=0A=
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 if (_uhash=3D=3D"off") return 1;=0A=
 return _uHash(_udn);=0A=
}=0A=
function _uHash(d) {=0A=
 if (!d || d=3D=3D"") return 1;=0A=
 var h=3D0,g=3D0;=0A=
 for (var i=3Dd.length-1;i>=3D0;i--) {=0A=
  var c=3DparseInt(d.charCodeAt(i));=0A=
  h=3D((h << 6) & 0xfffffff) + c + (c << 14);=0A=
  if ((g=3Dh & 0xfe00000)!=3D0) h=3D(h ^ (g >> 21));=0A=
 }=0A=
 return h;=0A=
}=0A=
function _uFixA(c,s,t) {=0A=
 if (!c || c=3D=3D"" || !s || s=3D=3D"" || !t || t=3D=3D"") return "-";=0A=
 var a=3D_uGC(c,"__utma=3D"+_udh,s);=0A=
 var lt=3D0,i=3D0;=0A=
 if ((i=3Da.lastIndexOf(".")) > 9) {=0A=
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  _uns=3D(_uns*1)+1;=0A=
  a=3Da.substring(0,i);=0A=
  if ((i=3Da.lastIndexOf(".")) > 7) {=0A=
   lt=3Da.substring(i+1,a.length);=0A=
   a=3Da.substring(0,i);=0A=
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  if ((i=3Da.lastIndexOf(".")) > 5) {=0A=
   a=3Da.substring(0,i);=0A=
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  a+=3D"."+lt+"."+t+"."+_uns;=0A=
 }=0A=
 return a;=0A=
}=0A=
function _uTrim(s) {=0A=
  if (!s || s=3D=3D"") return "";=0A=
  while ((s.charAt(0)=3D=3D' ') || (s.charAt(0)=3D=3D'\n') || =
(s.charAt(0,1)=3D=3D'\r')) s=3Ds.substring(1,s.length);=0A=
  while ((s.charAt(s.length-1)=3D=3D' ') || =
(s.charAt(s.length-1)=3D=3D'\n') || (s.charAt(s.length-1)=3D=3D'\r')) =
s=3Ds.substring(0,s.length-1);=0A=
  return s;=0A=
}=0A=
function _uEC(s) {=0A=
  var n=3D"";=0A=
  if (!s || s=3D=3D"") return "";=0A=
  for (var i=3D0;i<s.length;i++) {if (s.charAt(i)=3D=3D" ") n+=3D"+"; =
else n+=3Ds.charAt(i);}=0A=
  return n;=0A=
}=0A=
function __utmVisitorCode(f) {=0A=
 var r=3D0,t=3D0,i=3D0,i2=3D0,m=3D31;=0A=
 var a=3D_uGC(_ubd.cookie,"__utma=3D"+_udh,";");=0A=
 if ((i=3Da.indexOf(".",0))<0) return;=0A=
 if ((i2=3Da.indexOf(".",i+1))>0) r=3Da.substring(i+1,i2); else return =
"";  =0A=
 if ((i=3Da.indexOf(".",i2+1))>0) t=3Da.substring(i2+1,i); else return =
"";  =0A=
 if (f) {=0A=
  return r;=0A=
 } else {=0A=
  var c=3Dnew =
Array('A','B','C','D','E','F','G','H','J','K','L','M','N','P','R','S','T'=
,'U','V','W','X','Y','Z','1','2','3','4','5','6','7','8','9');=0A=
  return =
c[r>>28&m]+c[r>>23&m]+c[r>>18&m]+c[r>>13&m]+"-"+c[r>>8&m]+c[r>>3&m]+c[((r=
&7)<<2)+(t>>30&3)]+c[t>>25&m]+c[t>>20&m]+"-"+c[t>>15&m]+c[t>>10&m]+c[t>>5=
&m]+c[t&m];=0A=
 }=0A=
}=0A=
function _uIN(n) {=0A=
 if (!n) return false;=0A=
 for (var i=3D0;i<n.length;i++) {=0A=
  var c=3Dn.charAt(i);=0A=
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 }=0A=
 return true;=0A=
}=0A=
function _uES(s,u) {=0A=
 if (typeof(encodeURIComponent) =3D=3D 'function') {=0A=
  if (u) return encodeURI(s);=0A=
  else return encodeURIComponent(s);=0A=
 } else {=0A=
  return escape(s);=0A=
 }=0A=
}=0A=
function _uUES(s) {=0A=
 if (typeof(decodeURIComponent) =3D=3D 'function') {=0A=
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 } else {=0A=
  return unescape(s);=0A=
 }=0A=
}=0A=
function _uVG() {=0A=
 if((_udn.indexOf("www.google.") =3D=3D 0 || _udn.indexOf(".google.") =
=3D=3D 0 || _udn.indexOf("google.") =3D=3D 0) && _utcp=3D=3D'/' && =
_udn.indexOf("google.org")=3D=3D-1) {=0A=
  return false;=0A=
 }=0A=
 return true;=0A=
}=0A=
function _uSP() {=0A=
 var s=3D100;=0A=
 if (_usample) s=3D_usample;=0A=
 if(s>=3D100 || s<=3D0) return true;=0A=
 return ((__utmVisitorCode(1)%10000)<(s*100));=0A=
}=0A=
function urchinPathCopy(p){=0A=
 var d=3Ddocument,nx,tx,sx,i,c,cs,t,h,o;=0A=
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 tx=3Dnew Date(); tx.setTime(tx.getTime()+(_utimeout*1000));=0A=
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 sx=3Dnew Date(); sx.setTime(sx.getTime()+(_ucto*1000));=0A=
 sx=3Dsx.toGMTString()+";";=0A=
 for (i=3D0;i<6;i++){=0A=
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  if (i=3D=3D1) t+=3Dtx; else if (i=3D=3D2) t=3D""; else if (i=3D=3D5) =
t+=3Dsx; else t+=3Dnx;=0A=
  c=3D_uGC(d.cookie,"__utm"+cs[i]+"=3D"+h,";");=0A=
  if (c!=3D"-") d.cookie=3D"__utm"+cs[i]+"=3D"+c+"; path=3D"+p+";"+t+o;=0A=
 }=0A=
}=0A=
function _uCO() {=0A=
 if (!_utk || _utk=3D=3D"" || _utk.length<10) return;=0A=
 var d=3D'www.google.com';=0A=
 if (_utk.charAt(0)=3D=3D'!') d=3D'analytics.corp.google.com';=0A=
 _ubd.cookie=3D"GASO=3D"+_utk+"; path=3D"+_utcp+";"+_udo;=0A=
 var sc=3Ddocument.createElement('script');=0A=
 sc.type=3D'text/javascript';=0A=
 sc.id=3D"_gasojs";=0A=
 =
sc.src=3D'https://'+d+'/analytics/reporting/overlay_js?gaso=3D'+_utk+'&'+=
Math.random();=0A=
 document.getElementsByTagName('head')[0].appendChild(sc);  =0A=
}=0A=
function _uGT() {=0A=
 var h=3Dlocation.hash, a;=0A=
 if (h && h!=3D"" && h.indexOf("#gaso=3D")=3D=3D0) {=0A=
  a=3D_uGC(h,"gaso=3D","&");=0A=
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  a=3D_uGC(_ubd.cookie,"GASO=3D",";");=0A=
 }=0A=
 return a;=0A=
}=0A=
var _utk=3D_uGT();=0A=
if (_utk && _utk!=3D"" && _utk.length>10) {=0A=
 if (window.addEventListener) {=0A=
  window.addEventListener('load', _uCO, false); =0A=
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  window.attachEvent('onload', _uCO);=0A=
 }=0A=
}=0A=
=0A=
function _uNx() {=0A=
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}=0A=

------=_NextPart_000_0000_01C85870.B701F780--

