细胞粘附. 细胞粘附. 机械应变会诱导依赖E-cadherin的Yap1和β-catenin激活,从而推动细胞循环的进入
Blair W Benham-Pyle1, Beth L Pruitt2, W James Nelson3
1Program in Cancer Biology, Stanford University, Stanford, CA 94305, USA.
概括
机械应变通过Yap1和β-catenin通路触发细胞增殖. 在上皮细胞中,E-cadherin对于这些机械信号响应至关重要,调节组织发育.
科学领域:
- 细胞生物学 细胞生物学
- 生物物理学的生物物理.
- 组织工程是组织工程.
背景情况:
- 机械力显著影响组织的发育,组织和功能.
- 连接机械应变,细胞-细胞结合和细胞反应的精确分子机制仍然不清楚.
研究的目的:
- 阐明在静止表皮细胞中将机械应变与细胞循环再进入联系起来的信号通路.
- 研究Yap1和β-catenin在调解细胞对机械应激反应中的作用.
- 为了确定E-cadherin在机械传导中的参与.
主要方法:
- 机械应变对静止的上皮细胞培养物的应用.
- 对Yap1和β-catenin的核积累和转录活性进行分析.
- 针对Yap1和β-catenin转录活性的抑制研究.
- 评估E-cadherin在维持静止和机械感知方面的作用.
主要成果:
- 机械应变诱导了上皮细胞的快速细胞循环重新进入.
- Yap1核积累之前的β-catenin核积累和转录活动.
- 抑制Yap1阻断了细胞循环的重新进入,而β-catenin抑制阻止了G1到S相的进展.
- 对于维持静止状态和调解Yap1/β-catenin应对应变的反应,E-cadherin的参与是必不可少的.
结论:
- 雅普1和β-catenin激活作为机械应变诱导的细胞增殖的关键调节者.
- 卡德林作为信号枢纽起作用,对细胞对外部机械力的反应至关重要.
- 了解这些途径对于组织工程和再生医学至关重要.
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