阿克托米奥辛活性和皮埃佐1活性协同驱动泌尿系统纤维细胞激活
Guo Chen1,2, Xiaoshuai Gao1, Jiawei Chen1
1Department of Urology, Institute of Urology (Laboratory of Reconstructive Urology), West China Hospital, Sichuan University, Chengdu, Sichuan, 610041, P. R. China.
Advanced science (Weinheim, Baden-Wurttemberg, Germany)
|October 23, 2023
概括
细胞机械力量,由肌二和皮埃佐1调节,驱动纤维化. 它们的相互作用创造了一个反循环,加剧了纤维细胞到肌纤维细胞的过渡,这表明Piezo1是膀纤维化治疗的治疗标.
科学领域:
- 生物医学工程 生物医学工程
- 细胞生物学 细胞生物学
- 机械生物学 机械生物学
背景情况:
- 机械线索,特别是细胞外矩阵刚性,对于纤维细胞转移至肌纤维细胞过渡 (FMT) 在纤维化中至关重要.
- 细胞内力 (myosin II) 和信号传导 (Piezo1) 是已知的机械传导通路,但它们在FMT中的相互作用尚不清楚.
研究的目的:
- 在调节纤维细胞到肌纤维细胞过渡 (FMT) 过程中,研究myosin II和Piezo1之间的交叉.
- 阐明在膀纤维化期间机械度转化为生物化学信号的机制.
主要方法:
- 利用具有可调节基板特性的水凝系统地研究FMT.
- 研究了涉及髓二,Piezo1,PI3K/PIP3和FAK/RhoA/ROCK的信号通路.
主要成果:
- 证明了myosin II和Piezo1信号通路是集成的,在膀FMT期间将机械度转化为生物化学信号.
- 揭示了myosin II和Piezo1之间的一种协同的前循环,该循环促进了染色质重塑并加剧了FMT.
- 确定细胞内力通过膜张力激活Piezo1,而Piezo1介导的流增加了细胞内力.
结论:
- 肌蛋白II和Piezo1之间的交叉声形成了一个复杂的反电路,驱动FMT.
- 准Piezo1为缓解膀纤维化和功能障碍提供了潜在的治疗策略.
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