通过PIEZO1对周期性力量的机械感知对于先天免疫是至关重要的
Angel G Solis1, Piotr Bielecki1, Holly R Steach1
1Department of Immunobiology, Yale University School of Medicine, New Haven, CT, USA.
Nature
|August 23, 2019
概括
由天生的免疫细胞感知到的机械力量通过PIEZO1通道触发炎症. 这种机械感知对于感染和自身炎症期间的免疫反应至关重要.
科学领域:
- 免疫学
- 细胞生物学
- 机械生物学
背景情况:
- 在炎症期间,先天性免疫细胞会检测病原体和环境信号,
- 免疫细胞体验机械力量,包括压力,但它们在免疫反应中的调节作用尚不清楚.
研究的目的:
- 研究机械力量,特别是循环水静压在调节先天免疫细胞炎症反应中的作用.
- 确定机械敏感的离子通道PIEZO1是否介导先天免疫细胞的压力诱导炎症.
主要方法:
- 使用一种缺少PIEZO1天生的免疫细胞的小鼠模型.
- 暴露于细菌感染和纤维性自身炎症的小鼠模型.
- 在PIEZO1缺陷小鼠和野生型小鼠中评估肺炎.
主要成果:
- 循环水静压激活PIEZO1通道,启动炎症反应.
- 缺少PIEZO1在先天免疫细胞中的小鼠显著减少了肺炎.
- 这种减少的炎症在细菌感染和纤维性自身炎症的情况下都被观察到.
结论:
- 天生的免疫细胞拥有环境感官轴,通过机械感知触发炎症.
- 机械激活的离子通道PIEZO1在调解对机械刺激的免疫反应方面发挥着关键的生理作用.
- 通过PIEZO1的机械感知是肺炎的关键调节者,可应对感染和自身炎症.
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