エクトダーマファクターは,p53を阻害することによって,メソダーマの分化を制限する
Noriaki Sasai1, Rieko Yakura, Daisuke Kamiya
1Organogenesis and Neurogenesis Group, RIKEN Center for Developmental Biology, Kobe 650-0047, Japan. norisa@cdb.riken.jp
Cell
|May 31, 2008
まとめ
新種の亜鉛指タンパク質,XFDL156は,p53の活性を抑制することによって,両生類の gastrulationの間にメソダーマの分化を抑制するエクトダーマの因子として作用します.
科学分野:
- 発達生物学 発達生物学とは
- 分子および細胞生物学は,分子および細胞生物学である.
背景:
- 胚の発達は精密な生殖層の仕様に依存しています.
- メソデーム形成には,TGF-βシグナル伝達とp53が含まれていますが,重要なジゴティック要因はまだ特定されていません.
研究 の 目的:
- 両生類の胃化の際にメソデームの特異性を調節する新しいジゴティック要因を特定する.
- エクトodermalとメソodermalの分化におけるXFDL156の役割を明らかにする.
主な方法:
- 両生類の胚における亜鉛指タンパク質XFDL156の過剰発現と減少.
- メソダーママーカーとp53標的遺伝子誘導の分析.
- XFDL156とp53.5のタンパク質相互作用の調査
主要な成果:
- 皮膚外ジゴティック因子であるXFDL156が特定されました.
- XFDL156の過剰発現は,メソダーマの分化マーカーを阻害した.
- XFDL156の枯渇は,エクトドームのエクトピックメソダーマの分化につながった.
- XFDL156はp53と相互作用し,その標的遺伝子の活性化と中皮の分化を抑制する.
結論:
- XFDL156は,エクトダーマにおけるメソダーマの分化を積極的に抑制する.
- この抑制は,p53の活性と時空反応の制御によって媒介される.
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