不同的刺激会诱导内皮功能障碍,并通过Piezo1/YAP信号轴促进动脉样硬化
Jingying Mao1, Ronghao Yang2, Ping Yuan3
1Department of Thyroid and Vascular Surgery, The Affiliated Hospital of Southwest Medical University, Luzhou, 646000, China; Key Laboratory of Medical Electrophysiology of Ministry of Education and Medical Electrophysiological Key Laboratory of Sichuan Province, Institute of Cardiovascular Research, Southwest Medical University, Luzhou, Sichuan, 646000, China.
Archives of biochemistry and biophysics
|September 15, 2023
概括
在动脉样硬化模型中,Piezo1通道激活增加了自,并促进了血管内皮功能障碍. 这涉及到YES相关蛋白 (YAP) 信号的激活,突出了心血管疾病的潜在治疗点.
科学领域:
- 心血管生物学 心血管生物学
- 机械生物学 机械生物学
- 分子医学是分子医学.
背景情况:
- 血管内皮功能障碍引发动脉样硬化 (AS),通常发生在血液流动受损的部位 (DF).
- 内皮细胞 (ECs) 容易受到DF的机械力量的影响,但功能障碍的潜在机制尚未完全理解.
研究的目的:
- 研究Piezo1在干扰流动和氧化低密度脂蛋白 (ox-LDL) 条件下的内皮细胞功能障碍中的作用.
- 阐明将Piezo1与内皮细胞自和Hippo信号通路联系起来的分子机制.
主要方法:
- 在暴露于DF和ox-LDL的人类静脉内皮细胞 (HUVEC) 中评估Piezo1表达,以及AS的ApoE-/-小鼠模型.
- 在细胞实验中利用了lentivirus介导的shRNA进行Piezo1敲击,并使用了Piezo1激动剂 (Yoda1) 和YAP抑制剂 (CA3).
- 分析了自标志物 (LC3-II,p62/SQSTM1) 和YAP蛋白表达,定位和活性.
主要成果:
- 在HUVEC和AS小鼠模型中,Piezo1表达被DF和ox-LDL上调.
- 皮埃佐1激活促进了ECs的自和YAP激活,包括核转位.
- YAP抑制部分逆转了Yoda1诱导的自抑制,表明Piezo1通过YAP信号传递的作用.
结论:
- 皮埃索1激活通过YAP激活和核转位来调节自,从而导致血管内皮功能障碍.
- 准Piezo1-YAP信号可能为预防或治疗动脉样硬化提供一种新的治疗策略.
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