DLC1通过RhoGAP介导的焦点粘附周转促进YAP的机械传导反
Aukie Hooglugt1,2, Miesje M van der Stoel1, Apeksha Shapeti3
1Amsterdam UMC, University of Amsterdam, Department of Medical Biochemistry, Amsterdam Cardiovascular Sciences, 1105AZ Amsterdam, the Netherlands.
删除在肝癌-1 (DLC1) 蛋白通过减少它们的核定位来负面调节YAP/TAZ活性. 这种反循环对于控制发芽血管生成期间内皮细胞迁移至关重要.
科学领域:
- 细胞生物学 细胞生物学
- 分子生物学分子生物学
- 血管生物学 血管生物学
背景情况:
- 血管新生需要亲血管新生信号和血管稳定之间的平衡.
- YAP (YAP1) 和TAZ (WWTR1) 是关键的转录辅助因子,调节内皮细胞迁移.
- DLC1是内皮细胞中YAP/TAZ的下游标.
研究的目的:
- 研究DLC1和YAP/TAZ活性在血管生成中的反机制.
- 阐明DLC1的RhoGAP域在调节YAP/TAZ中的作用.
- 了解DLC1如何影响在发芽血管生成过程中的细胞过程.
主要方法:
- 研究了DLC1和YAP/TAZ之间的相互作用.
- 评估了DLC1的RhoGAP活动对YAP核定位和转录活动的影响.
- 分析了DLC1在焦点粘附周转,细胞张力和发芽血管生成中的作用.
主要成果:
- 通过其RhoGAP域的DLC1信号,减少了YAP/TAZ核定位和转录活动.
- DLC1的RhoGAP活性对于YAP介导的焦点粘附周转和引力的调节至关重要.
- DLC1通过抑制Rho信号来缓解细胞内细胞骨紧张,从而减少核YAP局部化.
结论:
- 在血管生成过程中,DLC1表达和YAP/TAZ活动之间存在负反循环.
- DLC1作为一个关键的机械传导调节器,通过细胞内张力微调YAP/TAZ活动.
- DLC1的功能对于控制集体细胞迁移和发芽血管生成至关重要.
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