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Identification and expression of cytochrome P450 genes in the Chinese giant salamander Andrias davidianus

文献类型： 外文期刊

作者： Hu, Qiaomu 1 ; Xiao, Hanbing 1 ; Tian, Haifeng 1 ; Meng, Yan 1 ;

作者机构： 1.Chinese Acad Fishery Sci, Yangtze River Fisheries Res Inst, Wudayuan First Rd 8, Wuhan 430223, Hubei, Peoples R China

关键词： Andrias davidianus;cyp gene;Transcriptome;Sexual dimorphism

期刊名称：THERIOGENOLOGY （ 影响因子：2.74； 五年影响因子：2.93 ）

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收录情况： SCI

摘要： Cytochrome P450 (cyp) genes play vital roles in biological processes, including in metabolism of endogenous and exogenous compounds. Exogenous hormone influences on gene expression that leads to disruption of gonad development have been studied in several species, but whether exogenous hormones affect cyp genes that show sexually dimorphic expression remains to be determined. Here, we identified and characterized cyp genes from the widely-cultured Chinese giant salamander Andrias davidianus. We obtained 20 cyp genes including 11 genes with complete sequences. Phylogenetic analyses supported the classification of cyp genes similar to other vertebrates. Expression profile of female and male salamanders showed multiple cyp genes to exhibit higher expression in ovary than in testis, including cyp26a, cyp19a, cyp1a1, cyp4v2, cyp3a24, cyp2c20, cyp2d14, gp2d15, and cyp4b; while cyp11a, cyp2b11, cyp11b1, cyp4f22, cyp2j6, cyp2k1, cyp2k4, cyp1a5 was higher in testis than in ovary. Seven sex biased genes were detected after aromatase inhibitor injection and with exposure to high water temperatures. Cyp2k1, cyp11b1, and cyp2j6 expression were increased, while cyp26a, cyp2c20, cyp4b genes were decreased with aromatase inhibition. In ovary, cyp26a and cyp2c20 expression were significantly reduced; whereas cyp2k1, cyp2j6, and cyp2k4 expression were significantly elevated with no changes in cyp11a and cyp11b1 expression after temperature treatment. These findings provide valuable information for further study of sex differentiation mechanisms and cyp gene evolution. (C) 2017 Elsevier Inc. All rights reserved.

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