EMTによって誘発される幹細胞および間葉系プログラムは、細胞分裂およびESRP1依存性メカニズムによって切り離すことができる
Petra den Hollander1,2, Maria Castaneda3, Suhas V Vasaikar3,4
1Department of Pathology and Laboratory Medicine, Brown University, Providence, RI, USA.
iScience
|January 8, 2026
まとめ
上皮間葉転換(EMT)は、幹性および間葉系形質を駆動する。細胞分裂とESRP1はEMT中の幹性を制御し、それはがんにおける不良な予後を予測する。
科学分野:
- 細胞生物学
- がん研究
- 発生生物学
背景:
- 上皮間葉転換(EMT)は、上皮細胞が間葉系特性を獲得するプロセスである。
- EMTは、発生およびがんの進行に重要な幹性および間葉系特性の両方に関連している。
- 細胞分裂とEMT誘発性幹性の間の相互作用は、完全には理解されていない。
研究 の 目的:
- EMT駆動型幹性における細胞分裂の役割を調査すること。
- EMT誘発性幹性の主要な調節因子を同定すること。
- EMT後の幹性および間葉系シグネチャの予後的意義を決定すること。
主な方法:
- 細胞分裂の有無における上皮細胞のEMT誘導。
- 幹性および間葉系マーカーの分析。
- EMT駆動型幹性におけるESRP1の役割の調査。
- 分子シグネチャと患者予後の相関分析。
主要な成果:
- 細胞分裂は、EMT中の幹性の獲得に不可欠である。分裂の阻害は間葉系形質をもたらすが、幹性はもたらさない。
- ESRP1はEMT駆動型幹性の主要な調節因子であり、細胞分裂依存的に下方制御される。
- ESRP1の過剰発現は、間葉系特性に影響を与えることなく、幹性の獲得を阻害する。
- EMTによって誘発される幹性は、間葉系形質ではなく、不良な予後と相関する。
- 幹性を示すがん細胞は間葉系特性を示すが、その逆は常に真ではない。
結論:
- EMT駆動型幹性は、細胞分裂およびESRP1によって調節される。
- EMTによって誘発される幹性プログラムは、間葉系プログラムではなく、患者の不良な転帰を予測する。
- EMT中の幹性および間葉系プログラムの切り離しを理解することは、治療標的を提供する。
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