OTX2はマウスの生殖系統への侵入を制限する
Jingchao Zhang1, Man Zhang2, Dario Acampora3
1MRC Centre for Regenerative Medicine, Institute for Stem Cell Research, School of Biological Sciences, University of Edinburgh, 5 Little France Drive, Edinburgh, EH16 4UU, Scotland.
Nature
|October 5, 2018
まとめ
OTX2は生殖細胞の発達を調節する重要な転写因子です. ダウンレギュレーションにより,体細胞から原始生殖細胞 (PGC) が間に合うように分離され,適切な生殖が保証されます.
科学分野:
- 発達生物学
- 細胞生物学
- 遺伝学
背景:
- 生殖には生殖細胞の分離が不可欠である.
- 原始生殖細胞 (PGC) はマウスの上皮質から発達する.
- BMP4シグナル伝達とPGC転写因子はPGC誘導に関与することが知られている.
研究 の 目的:
- PGC転写因子誘導とBMP4信号を結びつける分子メカニズムを調査する.
- 体系系から生殖細胞の分離に関与する重要な調節体を特定する.
- 原始生殖細胞の発達における OTX2 の役割を明らかにする.
主な方法:
- ネズミでOtx2の欠失を伴うin vitroおよびin vivo研究
- PGCのような細胞の分化と能力の分析
- サイトカイン信号とBLIMP1から独立した生殖線侵入の調査.
主要な成果:
- OTX2のダウンレギュレーションは PGCプログラムの開始前に行われます.
- Otx2の消去はPGCのような細胞の分化を促進し,能力を延長する.
- Otx2の消去はPGCの数を増加させる.
- OTX2の喪失により,PGCの分化がサイトカインとBLIMP1に独立する.
結論:
- OTX2は,PGC転写因子の上流の抑制調節剤として作用する.
- OTX2は 細菌の侵入を 特定の時間と空間で制限する 障害物として機能します
- これにより,生殖細胞がソマから 正確に数値的に分離される.
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