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Seasonal variations of airborne microbial diversity in waste transfer stations and preventive effect on Streptococcus pneumoniae induced pulmonary inflammation

毛螺菌科 生物 肺炎链球菌 蛋白质细菌 微生物群 微生物学 乳酸菌 细菌 炎症 食品科学 免疫学 厚壁菌 发酵 抗生素 生物信息学 遗传学 16S核糖体RNA
作者
Yuqi Liu,Guanhua Deng,Huanhuan Liu,Pei Chen,Yimin Pan,Lingyun Chen,Huashan Chen,Guoxia Zhang
出处
期刊:Science of The Total Environment [Elsevier BV]
卷期号:912: 168888-168888 被引量:2
标识
DOI:10.1016/j.scitotenv.2023.168888
摘要

Environment, location, and season are important factors that influence the microbiological community, yet, little research on airborne microorganisms in waste transfer stations (WTSs). Here, the airborne bacterial and fungal communities at four WTSs during different seasons were analyzed by high-throughput sequencing. The bacteria were isolated by cultural method and screened bacterium alleviate inflammation induced by Streptococcus pneumoniae (Spn) by regulating gut microbiome. The results revealed that collected bioaerosols from the WTSs varied significantly by location and season. Proteobacteria and Pseudomonadota are prevalent in summer and winter, respectively. Ascomycota was predominant in two seasons. Hazard quotients for adults from four WTSs were below one. Three selected potential probiotics were formulated into a microbial preparation with a carrier that effectively prevented inflammation in bacterial and animal experiments. The expression levels of interleukin-1β, interleukin-6, and tumor necrosis factor-α in Pre group (0.11, 0.17, and 0.48-fold) were significantly lower than Spn group (2.75, 1.71, and 5.01-fold). These mechanisms are associated with changes in gut microbiota composition and short-chain fatty acids (SCFAs) levels, such as affecting Lachnospiraceae lachnospira abundance and acetic acid content. This study provides insights into the potential application of probiotics derived from WTSs as an alternative approach to preventing respiratory infections.
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