早期激活的细胞外矩阵蛋白质塑造了纤维化微环境的代谢和空间动态
Yuan Gui1, Wenxue Li2,3, Jia-Jun Liu4
1Division of Nephrology, Department of Medicine, University of Connecticut School of Medicine, Farmington, CT, USA.
Nature metabolism
|March 3, 2026
概括
细胞外矩阵蛋白1 (ECM1) 是纤维化的早期调节者. 向ECM1促进线粒体修复,并对抗病的进展.
科学领域:
- 腎臟病學 (nephrology) 是一種醫學專業.
- 分子生物学分子生物学
- 生物化学 生物化学
背景情况:
- 纤维化的微环境涉及复杂的细胞相互作用和细胞外矩阵 (ECM) 改造.
- 早期作用矩阵蛋白在纤维化中的作用尚不清楚.
研究的目的:
- 研究细胞外矩阵蛋白1 (ECM1) 作为纤维化早期调节者的作用.
- 阐明ECM1在纤维性病中的作用的基础分子机制.
主要方法:
- 使用了全球Ecm1淘汰赛小鼠模型和AAV9-介导的淘汰赛.
- 采用了ECM1.1.的纤维细胞特异性删除.
- 研究了整合素α2β1-RhoC-YAP轴和YAP-TEAD4复合体的形成.
- 分析了线粒体氧化酸化 (OXPHOS) 和Pgc1a表达.
- 应用空间转录组学和蛋白组学.
主要成果:
- 全球Ecm1淘汰赛小鼠表现出自发性纤维化和过早死亡.
- 在慢性病期间,生物流体中的ECM1水平增加.
- 通过敲除或删除向ECM1显著减少纤维化.
- 删除ECM1破坏了整合素α2β1-RhoC轴,抑制了YAP活动.
- 减少YAP活动缓解了Pgc1a的抑制,增强了线粒体OXPHOS并促进了修复.
- 空间分析证实了一条机械代谢途径,涉及线粒体在管状体中的重编程.
结论:
- ECM1是改造的早期调节者,也是纤维化治疗的潜在治疗标.
- ECM1通过涉及整体蛋白-YAP-线粒体轴的机械代谢途径影响纤维化.
- 由ECM1调制驱动的管状细胞中的线粒体重编程提供了对纤维化进展的防御.
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