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Identification and characterization of ABCC gene family and their roles in the response to intraperitoneal injection of microcystin-LR in liver of silver carp (Hypophthalmichthys molitrix)

文献类型： 外文期刊

作者： Li, Xiaohui 1 ; Feng, Cui 1 ; Sha, Hang 1 ; Luo, Xiangzhong 1 ; Huang, Liguo 4 ; Zou, Guiwei 1 ; Liang, Hongwei 1 ;

作者机构： 1.Chinese Acad Fishery Sci, Yangtze River Fisheries Res Inst, Wuhan 430223, Peoples R China

2.Huazhong Agr Univ, Hubei Hongshan Lab, Wuhan 430070, Peoples R China

3.Minist Agr & Rural Affairs, Zhejiang Inst Freshwater Fisheries, Key Lab Hlth Freshwater Aquaculture, Key Lab Freshwater Aquaculture genet & breeding Z, Huzhou 313001, Peoples R China

4.Natl Original Seed Farm Yangtze River Four Major, Jingzhou 434405, Peoples R China

关键词： Hypophthalmichthys molitrix; SMRT sequencing; ABCC; MC-LR

期刊名称：AQUACULTURE REPORTS （ 影响因子：3.7； 五年影响因子：3.8 ）

ISSN： 2352-5134

年卷期： 2023 年 30 卷

页码：

收录情况： SCI

摘要： Silver carp (Hypophthalmichthys molitrix) is a widely distributed food resource and phytoplankton predator in China, which has been used to control algal blooms. Silver carp is quite resistant to microcystins (MCs), which are typical hepatotoxins generated by toxic algae. ATP-Binding Cassette, Subfamily C (ABCC) transporter are critical detoxification genes that could export toxic substances out of the cell, and with regard to ABCC transporters in H. molitrix, current studies are limited. In order to investigate the roles of ABCC genes in excretion of MCs, the full-length transcriptome of silver carp was analyzed to screen a total of nine ABCC transporter genes, which were expressed ubiquitously in silver carp tissues, especially in the liver. Furthermore, microcystin-LR (MC-LR) intraperitoneal injection was performed, and the results showed that, except abcc2, abcc10 and abcc12, the expression of other ABCC genes increased rapidly within 1 h and then began to decline after 6 h. Among these five genes, abcc3 and abcc9 exhibited the most pronounced response, indicating that these two were the most preeminent detoxification genes of microcystin in ABCC genes family in silver carp. Meanwhile, the activities of glutathione-S-transferase (GST) were increased significantly, while the content of glutathione (GSH) demonstrated a dramatic decrease, implying that GST catalyzed binding of GSH and MC-LR, and then excreted through ABCC transporters. The findings of this study will be useful in further investigating the fundamental characteristics of silver carp and provide new insights into the potential function of ABCC genes in the detoxication of MC-LR.

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