細胞の粘着. 細胞の粘着. 細胞の粘着. 機械的なストレスは,E-カデリン依存のYap1とβ-カテニンの活性化を誘導し,細胞循環への侵入を促します
Blair W Benham-Pyle1, Beth L Pruitt2, W James Nelson3
1Program in Cancer Biology, Stanford University, Stanford, CA 94305, USA.
まとめ
機械的なストレスは,Yap1とβ-catenin経路を通じた細胞増殖を誘発する. E-カデリンは,上皮細胞のこれらの機械信号応答に不可欠であり,組織発達を調節します.
科学分野:
- 細胞生物学 細胞生物学
- バイオフィジックス 生物物理学
- 組織工学は,組織工学である.
背景:
- 機械的な力は,組織の発達,組織化,機能に大きく影響します.
- 機械的ストレイン,細胞-細胞の結合,および細胞の反応を結びつける正確な分子機構は不明のままである.
研究 の 目的:
- 静止状態の上皮細胞における機械的ストレスを細胞サイクル再侵入と結びつけるシグナル伝達経路を解明する.
- 機械的ストレスに対する細胞の反応を媒介するYap1とβ-cateninの役割を調査する.
- E-カデリンのメカニカトランスデュークションへの関与を決定する.
主な方法:
- 静止している上皮細胞培養に機械的なストレスを適用する.
- Yap1とβ-cateninの核蓄積と転写活動の分析.
- Yap1とβ-カテニンの転写活性を標的とした抑制研究.
- 静止状態と機械感覚の維持におけるE-カデリンの役割の評価.
主要な成果:
- 機械的なストレスは,上皮細胞に急速な細胞サイクル再侵入を誘発した.
- Yap1核の蓄積はβ-カテニンの核の蓄積と転写活動に先行した.
- Yap1の阻害は細胞サイクル再侵入を阻害し,β-カテニンの阻害はG1からS相への進行を停止しました.
- 静止状態を維持し,ストレスに対するYap1/β-cateninの反応を媒介するために,E-カデリンの関与は不可欠でした.
結論:
- Yap1とβ-カテニンの活性化は,機械的なストレスを誘発した細胞増殖の主要な調節体として作用する.
- カデリンは,外部力に対する細胞の反応に不可欠な信号ハブとして機能します.
- これらの経路を理解することは,組織工学と再生医療にとって不可欠です.
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