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Molecular Cloning and Expression Determination of p38 MAPK from the Liver and Kidney of Silver Carp

机译:银鲤肝肾p38 MAPK的分子克隆与表达测定

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摘要

The sequence of p38MAPK in silver carp (Hm-p38a) was cloned and sequenced. Additionally, the acute toxicity of crude microcystins (MCs) on silver carp and induction expression of Hm-p38a by MCs exposure were also determined in this study. The results reveal that the length of Hm-p38a is 2418 bp and it contains a 1086 bp open reading frame. Hm-p38a could encode 361 amino acids. Sequence analysis indicates that Hm-p38a contains the conserved structures of Thr-Gly-Tyr motif and substrate binding site Ala-Thr-Arg-Trp, and it is highly conserved in fish. Phylogenetic analysis reveals that Hm-p38a is more closely related to fish than mammals and it belongs to p38 alpha subfamily. Moreover, Hm-p38a in silver carp is constitutively expressed in all examined tissues. In addition, our results indicate that MCs exposure significantly promotes the transcription of Hm-p38a in fish liver or kidney, suggesting that mitogen-activated protein kinase should also be the signal pathway of MCs hepatotoxicity in fish. (C) 2016 Wiley Periodicals, Inc.
机译:克隆并测序了silver鱼中的p38MAPK序列(Hm-p38a)。此外,本研究还确定了粗微囊藻毒素(MCs)对silver鱼的急性毒性和MCs暴露诱导Hm-p38a的表达。结果表明,Hm-p38a的长度为2418 bp,包含一个1086 bp的开放阅读框。 Hm-p38a可编码361个氨基酸。序列分析表明,Hm-p38a含有保守的Thr-Gly-Tyr基序结构和底物结合位点Ala-Thr-Arg-Trp,在鱼类中高度保守。系统发育分析表明,Hm-p38a与鱼类的关系比哺乳动物更紧密,并且属于p38α亚科。此外,silver鱼中的Hm-p38a在所有检查的组织中组成性表达。此外,我们的结果表明,MCs暴露可显着促进鱼肝或肾中Hm-p38a的转录,这表明促分裂原激活的蛋白激酶也应是鱼MCs肝毒性的信号途径。 (C)2016威利期刊公司

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