矩阵刚性的机制通过调节Piezo1来影响形大动脉膜疾病
Naifang Cao1, Si Cheng1, Haochang Hu1
1Department of Cardiology, The Second Affiliated Hospital, Zhejiang University School of Medicine, 310009, Hangzhou, PR China; State Key Laboratory of Transvascular Implantation Devices, 310009, Hangzhou, PR China; Heart Regeneration and Repair Key Laboratory of Zhejiang Province, Hangzhou, 310009, PR China.
Atherosclerosis
|November 12, 2025
概括
在性大动脉病 (CAVD) 中细胞外矩阵刚度的增加可提高Piezo1. 在膜间歇细胞 (VICs) 中抑制Piezo1抑制骨质分化和ECM重塑,这表明CAVD的治疗点.
科学领域:
- 心血管生物学 心血管生物学
- 生物机械工程 生物机械工程
- 细胞机械传导 细胞机械传导
背景情况:
- 动脉疾病 (CAVD) 受机械因素的影响,特别是细胞外矩阵 (ECM) 刚性.
- 连接ECM硬与CAVD进展的确切机制尚未完全理解.
研究的目的:
- 研究ECM刚度和机械敏感离子通道Piezo1在CAVD中的作用.
- 探索Piezo1在膜间歇细胞 (VIC) 骨质分化和ECM重塑中的潜在分子机制.
主要方法:
- 原子力显微镜测量人类大动脉硬度.
- 在体外研究涉及VICs培养在不同的刚度的矩阵上,用Piezo1沉默.
- 在活体研究中,使用Piezo1 knockdown进行大动脉结石化的小鼠模型.
- 用RNA测序来阐明Piezo1的作用机制.
主要成果:
- 与正常门相比,人类化的大动脉门表现出增加的扬氏模量.
- 增加的矩阵刚度可以调节Piezo1,促进VIC ECM重塑和骨质分化.
- 在体外和体内,Piezo1 knockdown改善了VIC骨质分化,ECM重塑和大动脉结石化,可能通过Wnt途径.
结论:
- 一个Piezo1-介导的反循环连接ECM硬化,VIC骨质分化和CAVD中的病态ECM重塑.
- 向Piezo1可能为缓解CAVD进展提供一种新的治疗策略.
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