Integrated evidence of transcriptional, metabolic, and intestinal microbiota changes in Ruditapes philippinarum due to perfluorooctanoic acid-induced immunotoxicity
文献类型： 外文期刊
作者： Li, Fengling 1 ; Gong, Xiuqiong 1 ; Zhou, Yang 1 ; Geng, Qianqian 1 ; Jiang, Yanhua 1 ; Yao, Lin 1 ; Qu, Meng 1 ; Tan, Zhijun 1 ;
作者机构： 1.Chinese Acad Fishery Sci, Yellow Sea Fisheries Res Inst, Key Lab Testing & Evaluat Aquat Prod Safety & Qual, Minist Agr & Rural Affairs, Qingdao, Peoples R China
2.Shanghai Ocean Univ, Coll Fisheries & Life Sci, Shanghai, Peoples R China
3.Pilot Natl Lab Marine Sci & Technol Qingdao, Qingdao, Peoples R China
关键词： Perfluorooctanoic acid; Immunotoxicity; Intestine microbiota; Metabolome; Transcriptome; Bivalve
期刊名称：SCIENCE OF THE TOTAL ENVIRONMENT （ 影响因子：9.8； 五年影响因子：9.6 ）
ISSN： 0048-9697
年卷期： 2024 年 916 卷
页码：
收录情况： SCI
摘要： Perfluorooctanoic acid (PFOA) is a toxic pollutant that bioaccumulates and is a significant public health concern due to its ubiquitous and persistent occurrence in global environments. Few studies have evaluated the adverse effects of PFOA on immune system, and this is particularly true for mollusks. Here, the PFOA-associated effects on immune system were evaluated in Ruditapes philippinarum using integrated analysis of metabolomes, microbiomes, and transcriptomes, providing evidence for possible mechanisms related to immunotoxicity. PFOA exposure caused clear variation in several important metabolites related to immune regulatory function within the haemolyph from R. philippinarum, while also altering key metabolic pathways, including those of lipids, unsaturated fatty acids (UFAs), and bile acids (BAs). After exposure to PFOAs, intestinal bacterial communities also clearly changed, with the predominant microflora becoming Mycoplasma and Bacteroidetes that are related to intestinal inflammation. Molecular analyses provided consistent results, wherein the expression of immune related genes was significantly altered. Integration of the multi-'omics' analyses suggested that the TLR/MyD88/ NF-kB pathway, along with PI3K-Akt-mTOR pathway, PPAR-mediated lipid metabolism and the autophagy signaling pathway, likely play important roles in initiating immunotoxic effects in R. philippinarum after PFOA exposure. These results provide further evidence that PFOA exposure can lead to immunologic dysfunction and also provide new insights into the mechanisms of PFAS alteration of bivalve immune function.
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