Microcystin-LR induces ferroptosis in intestine of common carp (Cyprinus carpio)

文献类型: 外文期刊

第一作者: Zhang, Yuanyuan

作者: Zhang, Yuanyuan;Wu, Di;Fan, Ze;Li, Jinnan;Gao, Lei;Wang, Liansheng;Wang, Yu'e

作者机构: Chinese Acad Fishery Sci, Heilongjiang River Fisheries Res Inst, Key Lab Aquat Anim Dis & Immune Technol Heilongji, 232 Hesong St, Harbin 150070, Peoples R China;Chinese Acad Agr Sci, Harbin Vet Res Inst, Heilongjiang Prov Key Lab Lab Anim & Comparat Med, Lab Anim & Comparat Me,State Key Lab Vet Biotech, 678 Haping Rd, Harbin 150069, Peoples R China

关键词: Microcystin-LR; Ferroptosis; Common carp; Intestine; Microbiome; Metabolome

期刊名称:ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY ( 2020影响因子:6.291; 五年影响因子:6.393 )

ISSN: 0147-6513

年卷期: 2021 年 223 卷

页码:

收录情况: SCI

摘要: Previous studies provide comprehensive evidence of the environmental hazards and intestinal toxicity of microcystin-LR (MC-LR) exposure. However, little is known about the mechanisms underlying the injury of intestine exposed to MC-LR. Juvenile common carp (Cyprinus carpio) were exposed to MC-LR (0 and 10 mu g/L) for 15 days. The results suggest that organic anion-transporting polypeptides 3a1, 4a1, 2b1, and 1d1 mediate MC-LR entry into intestinal tissues. Lesion morphological features (vacuolization, deformation and dilation of the endoplasmic reticulum [ER], absence of mitochondrial cristae in mid-intestine), up-regulated mRNA expressions of ER stress (eukaryotic translation initiation factor 2-alpha kinase 3, endoplasmic reticulum to nucleus signaling 1, activating transcription factor [ATF] 6, ATF4, DNA damage-inducible transcript 3), iron accumulation, and down-regulated activity of glutathione peroxidase (GPx) and glutathione (GSH) content were all typical characteristics of ferroptosis in intestinal tissue following MC-LR exposure. GSH levels in intestinal tissue corroborated as the most influential GSH/GPx 4-related metabolic pathway in response to MC-LR exposure. Verrucomicrobiota, Planctomycetes, Bdellovibrionota, Firmicutes and Cyanobacteria were correlated with the ferroptosis-related GSH following MC-LR exposure. These findings provide new perspectives of the ferroptosis mechanism of MC-LR-induced intestinal injury in the common carp.

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