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在慢性阻塞性肺病中,吸烟通过细胞因子环境导致Th1/Th2细胞功能障碍

Gang Chen¹, Qing Mu¹, Zhao-Ji Meng²

¹Department of Respiratory and Critical Care Medicine, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, Zhengzhou, Henan, People's Republic of China.

International journal of chronic obstructive pulmonary disease

|September 18, 2023

概括

暴露于COPD中的香烟烟雾会改变T辅助细胞平衡和炎症性细胞因子,影响肺功能. 这些变化是由细胞因子环境和T细胞尼古丁性乙胆受体介导的,影响疾病的进展.

科学领域:

免疫学免疫学免疫学
肺部病理学肺部病理学
细胞生物学细胞生物学

背景情况:

慢性阻塞性肺病 (COPD) 的发病包括T-辅助 (Th) 细胞失调和热,以及炎症性细胞因子.
在COPD中暴露于烟草烟雾的确切免疫反应机制仍然不完全理解.
这项研究研究了通过细胞因子环境和T细胞尼古丁乙胆受体 (nAChRs) 调节香烟烟雾引起的炎症.

研究的目的:

分析COPD患者,吸烟者和健康个体的T-辅助细胞子集比例和血细胞因子水平.
确定炎症性细胞因子水平与COPD肺功能之间的关联.
检查烟雾提取物 (CSE) 对T辅助细胞分化的体外影响.

主要方法:

使用流细胞计量来量化周围血液的Th1和Th2细胞比例.
测量了血前炎性细胞因子,并评估了它们与肺功能之间的相关性.
在体外实验中研究了CSE对有条件的T辅助细胞分化的影响.

主要成果:

慢性肺炎患者表现出更高的Th1细胞和血IFN-γ和IL-18,以及更低的Th2细胞.
升高的IFN-γ和IL-18水平与肺功能负相关 (预测FEV1%).
对CSE的暴露激活了NLRP3炎症酶,这表明Pyroptosis参与了COPD;CSE通过条件介质下的α7nAChR修饰促进了Th1分化.

结论:

细胞因子环境显著影响COPD病变发生过程中对CSE的免疫反应.
由NLRP3炎症酶激活介导的热,与CSE引起的COPD发展有关.
α7 nAChR在CSE诱导的Th1分化中发挥作用,突出潜在的治疗点.

关键词:

慢性慢性肺炎是一种慢性慢性肺炎,COPD是一种慢性肺炎.T助手 1 1 的帮助.在 Th1 细胞中.Th2 Th2 的意思是什么?慢性阻塞性肺病慢性阻塞性肺病香烟的烟雾,就是烟雾.在 nAChRs 的情况下.尼古丁酸乙胆受体是什么

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