Transcriptome profiling and histology changes in juvenile blunt snout bream (Megalobrama amblycephala) liver tissue in response to acute thermal stress

文献类型： 外文期刊

第一作者： Bing Li

作者： Bing Li;Su Yanli;Zhang Wuxiao;Ge, Xianping;Sun, Shengming;Jian Zhu

作者机构：

关键词： Transcriptome; Thermal stress; Megalobrama amblycephala; RNA-seq; Liver

期刊名称：GENOMICS （ 影响因子：5.736； 五年影响因子：4.939 ）

ISSN： 0888-7543

年卷期： 2019 年 111 卷 3 期

页码：

收录情况： SCI

摘要： To understand the precise mechanism and the pathways activated by thermal stress in fish, we sampled livers from juvenile Megalobrama amblycephala exposed to control (25 degrees C) and test (35 degrees C) conditions, and performed short read (100 bp) next-generation RNA sequencing (RNA-seq). Using reads from different temperature, expression analysis identified a total of 440 differentially-expressed genes. These genes were related to oxidative stress, apoptosis, immune responses and so on. We used quantitative real-time reverse transcriptase PCR to assess the differential mRNA expression of selected genes that encode antioxidant enzymes and heat shock proteins in response to thermal stress. Fish exposed to thermal stress also showed liver damage associated with serum biochemical parameter changes. The set of genes identified showed regulatory modulation at different temperatures, and therefore could be further studied to determine how thermal stress damages M. amblycephala livers and the possible roles of reactive oxygen species in this process.

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