肺
炎症
先天免疫系统
信号转导
生物
免疫学
癌症研究
免疫系统
医学
细胞生物学
内科学
作者
Ming Sun,Tong Wang,Yemian Zhou,Liang Qiao,Mengzi Sun,Li Han,Yang Zhao,Yun Liu,An Xu,Ying Liu
标识
DOI:10.1016/j.scitotenv.2023.164490
摘要
Diesel particulate matter (DPM) is a major component of Fine Particulate Matter (PM2.5), which has been recognized by the World Health Organization under the name “Class I Carcinogen”. Lung microbial communities are present widely in the lung tissue of a variety of organisms and play a significant role in the development and progression of lung disease, while cGAS is a DNA receptor that senses the invasion of microbial pathogens and activates the innate immune response. However, the role of cGAS in pulmonary flora-mediated PM2.5-induced lung injury is still largely unknown. With constructed cGAS−/− C57BL/6J mice, we found that lung damage, inflammation, and genetic damage induced by DPM were significantly blocked. With antibiotic-treated C57BL/6J mice, we found that healthy lung microbes were able to attenuate DPM-induced lung damage, inflammation, and genetic damage. DPM modified the expression of the cGAS/STING signaling pathway through the lung flora. This study revealed that cGAS signaling pathway played an essential role in lung flora-mediated adverse effects of DPM, which provided new therapeutic targets for lung diseases.
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