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Updated: Jan 31, 2026

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De Novo Generation of Somatic Stem Cells by YAP/TAZ
Published on: May 7, 2018
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Transient proliferation by reversible YAP and mitogen control of the cyclin D1/p27 ratio
Katherine R Ferrick1,2, Samsara W Upadhya1, Yilin Fan1,2,3
1Department of Cell and Developmental Biology, Weill Cornell Medicine, New York, NY, USA.
Communications biology
|January 29, 2026
まとめ
Hippo-YAP signaling controls cell proliferation during tissue repair. This study reveals YAP increases the cyclin D1/p27 ratio, promoting cell cycle entry, while contact inhibition later reverses this for safe regeneration.
科学分野:
- 細胞生物学
- 再生医療
- 分子生物学
背景:
- Hippo-YAPシグナル伝達は、組織修復および再生医療において極めて重要である。
- YAPが細胞増殖を制御するためにシグナルを統合する方法を理解することは極めて重要である。
研究 の 目的:
- 細胞周期への出入りを調節する上でのYAPによるマイトーゲンおよび接触阻害シグナルの統合メカニズムを解明すること。
- 組織修復中の増殖を制御する主要な分子プレイヤーと比率を特定すること。
主な方法:
- 核内サイクリンD1/p27タンパク質比の調節におけるYAPの役割を調査した。
- YAP、マイトーゲンシグナル伝達(EGFR/ERK)、および接触阻害の間の相互作用を調べた。
- 細胞周期中のこれらの因子の時間的ダイナミクスを分析した。
主要な成果:
- 初期G1期において、接触阻害の低下、マイトーゲンシグナルの増加、およびYAP-TEAD活性化が、核内サイクリンD1/p27比の上昇に収束する。
- YAPは、EGFRなどの受容体のアップレギュレーションを介してマイトーゲンシグナルを誘導し、ERKを介してシグナル伝達する。
- 接触阻害の遅延はYAPを抑制し、マイトーゲンシグナル伝達およびサイクリンD1/p27比をダウンレギュレーションして、制御されない増殖を防ぐ。
結論:
- 組織再生における堅牢な増殖には、YAP誘導性、受容体媒介性、サイクリンD1/p27比の持続的な増加が不可欠である。
- 接触阻害後の受容体シグナル伝達の遅延抑制は、再生中の癌発生を防ぐために極めて重要である。
キーワード:
Hippo-YAP signalingcell cycletissue repaircell proliferationcyclin D1/p27 ratiocontact inhibitionregenerationさらに関連する動画
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