皮埃佐1介导的机械传导调节2组先天性淋巴细胞的转化活性,功能和肺病原性
MinYeong Lim1,2, Seonjun Park3, Yoon Ha Joo4
1Laboratory of Mucosal Immunology, Department of Biomedical Sciences, Seoul National University College of Medicine, Seoul, 03080, South Korea.
Signal transduction and targeted therapy
|August 21, 2025
概括
机械敏感的离子通道Piezo1通过控制2组先天性淋巴细胞 (ILC2) 中的蛋白质合成来调节肺部的2型免疫反应. 针对Piezo1可能为由炎症驱动的肺部疾病提供新的治疗方法.
科学领域:
- 免疫学
- 细胞生物学
- 机械生物学
背景情况:
- 2组先天性淋巴细胞 (ILC2) 对于肺部的2型免疫反应至关重要.
- 通过机械线索调节ILC2的功能尚不清楚.
研究的目的:
- 研究机械信号在调节ILC2功能的作用.
- 确定连接机械线索到ILC2效应器功能的分子机制.
主要方法:
- 使用了老鼠和人类的ILC2.
- 研究了机械敏感的离子通道Piezo1.
- 使用Yoda1 (Piezo1激动剂),成像和mTOR信号通路分析.
- 在ILC2中使用了Piezo1的条件删除.
- 进行了scRNA-seq和scATAC-seq.
- 在IL-33,Alternaria alternata和白血素模型中评估肺炎和纤维化.
- 通过氨酸结合和蛋白质-mRNA相互作用检查了蛋白质合成.
主要成果:
- 皮埃佐1在ILC2中高度表达,并通过流和mTOR信号传递调解机械应激诱导的IL-13.
- 皮埃佐1缺乏ILC2s导致蛋白质合成受损,肺炎和纤维化减少.
- 在Piezo1缺乏的ILC2中,scRNA- seq和scATAC- seq显示了转化抑制,而不是转录变化.
- mTOR的药理抑制模仿了Piezo1损失的影响.
结论:
- 在ILC2中,Piezo1充当机械传感器,集成生物机械线索,通过mTOR介导的翻译来调节细胞因子的产生.
- Piezo1-mTOR轴是ILC2效应器功能的关键调节器.
- 针对Piezo1信号提供了2型炎症性肺病的潜在治疗策略.
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