巨细胞中CISD1减少在促进COPD通过M1极化和线粒体功能障碍的发展中的作用
Jiameng Gao1,2, Meiyuan Dong1, Weibin Tian1
1Department of Respiratory and Critical Care Medicine, Shanghai Pudong Hospital, 2800 Gongwei Rd, Shanghai, 201399, China.
European journal of medical research
|November 13, 2024
概括
在巨细胞中减少的CDGSH铁硫域含蛋白1 (CISD1) 促进M1极化和线粒体功能障碍,有助于慢性阻塞性肺病 (COPD) 的发展. 这通过激活自途径来响应烟雾暴露而发生.
科学领域:
- 肺部医学 肺部医学
- 细胞生物学 细胞生物学
- 分子生物学分子生物学
背景情况:
- 大细胞两极分化和氧化压力与慢性阻塞性肺病 (COPD) 的进展有关.
- CDGSH铁硫域含蛋白1 (CISD1) 被确定为这个过程中的一个关键因素.
- 这项研究研究了CISD1在烟雾诱导的巨细胞中的作用和机制.
研究的目的:
- 阐明CISD1在烟雾引起的巨细胞功能障碍中的作用.
- 调查潜在的机制,包括M1极化,线粒体功能障碍和氧化应激.
- 探索自途径在CISD1-介导作用中的参与.
主要方法:
- 使用香烟烟雾暴露诱导的COPD小鼠模型和Raw264.7巨细胞被香烟烟雾提取物刺激.
- 进行CISD1敲除,高通量测序,流细胞测量以检测巨细胞极化,并评估线粒体功能和氧化应激.
- 使用西布洛特用于自蛋白和ELISA用于炎症因素.
主要成果:
- 在COPD患者的单细胞中,CISD1的表达不足,并且在巨细胞中被香烟烟雾抑制.
- 清除CISD1促进了M1极化,线粒体功能障碍和巨细胞中的氧化应激.
- 在CISD1-抑制的巨细胞中观察到激活的自途径,包括LC3A/B和线粒体自蛋白 (PINK1,PARKN) 的上调调节.
- 与上皮细胞共同培养CISD1敲击下来的巨细胞增加了炎症因素.
结论:
- 在巨细胞中,烟雾诱导的CISD1减少驱动M1极化和线粒体功能障碍.
- 自途径的激活是调解这些效应的关键机制.
- 这些发现凸显了CISD1在COPD病变发生过程中的关键作用.
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