机械应力通过Piezo1/BMP2加速血管光滑肌细胞的血管化
Bohou Li1, Zewen Zhao2, Yubin Xia3
1Department of Nephrology, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou, China; Institute of Geriatrics, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou, China.
Biochimica et biophysica acta. Molecular basis of disease
|September 28, 2025
概括
机械压力通过Piezo1通道加速血液透析患者的血管化 (VC). 这项研究揭示了Piezo1在血管光滑肌细胞中的激活促进了VC,突出了潜在的治疗标.
科学领域:
- 血管生物学 血管生物学
- 机械生物学 机械生物学
- 腎臟病學 (nephrology) 是一種醫學專業.
背景情况:
- 血管化 (VC) 是末期病患者接受血液透析的重大并发症,导致死亡率.
- 用于血液透析接入的动脉静脉是由于机械压力而容易发生VC,从而损害了治疗的有效性.
- 皮埃佐1 (Piezo1) 是血管光滑肌细胞 (VSMC) 中的一种机械敏感离子通道,它调解机械应激反应,但其在VC加速中的作用尚未完全理解.
研究的目的:
- 在血液透析的背景下,研究Piezo1在机械压力诱导的血管化 (VC) 中的作用.
- 阐明机械应力在VSMC中通过Piezo1加速VC的基本机制.
主要方法:
- 从血液透析患者的放射性动脉中检查了Piezo1表达的VC.
- 在体外模型中使用的VSMC和大鼠大心脏受到高或水静压 (HP) 的作用.
- 使用激动剂 (Yoda1) 和抑制剂 (GsMTx4) 操纵Piezo1活动,并使用基因沉默. 评估了化,骨质分化,内质网膜应激和流入. 研究了BMP2.2的作用.
主要成果:
- 血液透析患者的放射性动脉与VC呈现了增加的Piezo1表达.
- 在体外,高或HP诱导VSMC中的Piezo1表达和化,包括高沉积和骨质标志物.
- 由Yoda1激活Piezo1显著增加了化,而Piezo1的抑制或沉默减弱了HP诱导的化.
- 通过Piezo1.1,HP和Yoda1治疗激活了体内膜网膜应激和VSMC中的流通过Piezo1.
- 由HP或Yoda1.1诱导的BMP2抑制缓解的化.
结论:
- 机械应力通过Piezo1离子通道在VSMC中加速血管化 (VC).
- 在VSMC中的Piezo1/BMP2信号通路与机械应力下的VC加速有关.
- 向Piezo1可能提供一种新的治疗策略,用于预防或治疗血液透析患者的VC.
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