机械压力过载促进NF-κB/NLRP3介导的骨关节炎,通过Piezo1促进关节膜炎和纤维化
Likai Yu1, Di Tian1, Zishan Su1
1Department of Orthopedics, Affiliated Hospital of Nanjing University of Chinese Medicine/ Jiangsu Province Hospital of Chinese Medicine, Nanjing 210029, Jiangsu, China; Key Laboratory for Metabolic Diseases in Chinese Medicine, First College of Clinical Medicine, Nanjing University of Chinese Medicine, Nanjing 210023, Jiangsu, China.
Cellular signalling
|April 12, 2025
概括
机械压力通过激活Piezo1通道驱动膝关节关节炎. 这导致通过NF-κB/NLRP3通路引起突膜炎和纤维化,突出显示Piezo1是KOA.的治疗标.
科学领域:
- 生物医学工程 生物医学工程
- 机械生物学 机械生物学
- 类风湿病学 类风湿病学
背景情况:
- 机械压力是膝关节骨关节炎 (KOA) 发展的关键因素.
- 一个机械敏感的离子通道Piezo1检测出机械应力变化并将其转化为电信号.
- 了解Piezo1在KOA诱导的突炎和纤维化中的作用至关重要.
研究的目的:
- 调查Piezo1如何影响机械应激诱导的膜炎和KOA中的纤维化.
- 探索涉及NF-κB/NLRP3信号通路的潜在机制.
- 评估针对Piezo1.1的治疗潜力.
主要方法:
- 使用大鼠突组织 (正常与过度运动) 的体内研究,并进行病理分析和免疫组织化学分析.
- 在体外研究中,使用纤维细胞样同胞细胞 (FLS) 通过细胞伸展承受机械应力.
- 评估Piezo1表达,NF-κB/NLRP3通路激活,促炎细胞因子和纤维化标志物,与抑制剂 (GsMTx4,MCC950) 干预.
主要成果:
- 机械应激显著激活了Piezo1,增加了p65酸化,并增加了NLRP3通路组件 (caspase-1,ASC,GSDMD) 和细胞因子 (IL-1β,IL-18,IL-6,TNF-α).
- 机械应力促进了体外和体内突纤维化,由纤维化标志物的增加表明.
- 在机械应力过载下Piezo1的升调通过NF-κB/NLRP3通路加剧了突炎和纤维化.
结论:
- 通过机械应激激活Piezo1是膝关节骨关节炎中膜炎和纤维化的一个关键驱动因素.
- NF-κB/NLRP3信号通路调解Piezo1的促炎和促纤维效应.
- 向Piezo1可能为管理KOA进展提供一种新的治疗策略.
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