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117 141<br />
P<br />
kirrel <br />
<br />
1 1 1 1 2 <br />
1<br />
1<br />
2 <br />
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A member of the immunoglobulin superfamily, kirrel3, is expressed in the dorsal<br />
root ganglia DRGs. In the previous report, we have suggested that kirrel3<br />
may play a role in the development of tyrosine kinase receptor Trk Cpositive<br />
neurons. To get further insights into the function of kirrel3 in the DRG neurons,<br />
we characterized kirrel3expressing neurons in the DRGs of kirrel3lacZ Z knockin<br />
mice. In the lumber DRG neurons, the expression of βgalactosidase βgal<br />
was first observed at embryonic day 12.5, gradually increased, and reached<br />
the maximum level at postnatal day P 7. During embryonic stages, βgal was<br />
predominantly expressed in TrkA and TrkCpositive neurons, while some βgal<br />
positive neurons contained TrkB or Ret. The expression of Ret was increased in<br />
βgalpositive neurons between P7 and P14, and was observed in approximately<br />
43% of βgalpositive neurons of the adult DRGs. These results suggest that<br />
kirrel3 may be involved in the development of nociceptive and mechanoceptive<br />
neurons in addition to proprioceptive neurons.<br />
This work was supported by a GrantinAid for Scientific Research B from<br />
Japan Society for the Promotion of Science 22390036.<br />
P<br />
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BMP4 FGF2 <br />
<br />
Dlx5Six1Eya2 PCR Dlx5 <br />
10 <br />
GATA3/keratin19 Slug <br />
Sox2 FGF2<br />
FGF8 <br />
BMP4 FGF2 <br />
<br />
P<br />
/ <br />
Sprouty<br />
1,2 2 3 2<br />
1<br />
2 <br />
3 <br />
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<br />
in vitro <br />
bFGF <br />
Receptor tyrosine kinase RTK <br />
Sprouty 4 Sprouty<br />
in situ hybridization <br />
<br />
Sprouty4 Sprouty4 <br />
<br />
Sprouty4 <br />
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Sprouty4 <br />
Sprouty4 <br />
<br />
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P<br />
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4 Oct3/4Sox2Klf4cMyc <br />
induced pluripotent stem cell<br />
iPS <br />
<br />
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<br />
iPS <br />
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P<br />
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1 2 3 2<br />
1<br />
2 3 <br />
P<br />
Dlg <br />
1 1 2<br />
1<br />
2 <br />
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3 16 Hox11Tcf21<br />
WT1Barx1Nkx3.2<br />
mesothelium<br />
<br />
<br />
Fgf16 FGF receptor12 <br />
mesothelium<br />
Fgf16 FGF receptor12 <br />
<br />
<br />
<br />
Dlg1 MAGUK <br />
Dlg1 Dlg1 -/- <br />
<br />
Dlg1 <br />
Dlg1 -/- <br />
Dlg1 <br />
2010 Wnt Fzd1 <br />
2 Dlg1 -/- <br />
Fzd1 -/- Fzd2 -/- <br />
Dlg1 -/- <br />
<br />
Fzd1 -/- Fzd2 -/- <br />
Dlg1 -/- <br />
Notch <br />
Notch <br />
<br />
Dlg1 -/- <br />
Dlg1 Notch