Transcriptome analysis provides insights into copper toxicology in piebald naked carp (Gymnocypris eckloni)

作者：Wenjie Jin, Zixuan Li, Fengxia Ran, Shen Huang, Kefan Huo, Jianjuan Li, Qingshuo Han, Guojie Wang, Zhenji Wang, Shenlong Jian, Kemao Li, Changzhong Li · 发表于：BMC Genomics · 年份：2021 · DOI：10.1186/s12864-021-07673-4 · 被引用次数：19 · 研究领域：Environmental Toxicology and Ecotoxicology、Invertebrate Immune Response Mechanisms、Trace Elements in Health

BACKGROUND: Copper was used for many years in aquaculture operations as an effective algaecide or a parasite treatment of fish. It is an essential nutrient with numerous functions in organisms, but is toxic at high concentrations. However, the toxicity of copper to fish remains unclear. In this study, we used the piebald naked carp, Gymnocypris eckloni, as a model. RNA-seq data from different tissues, including gills, kidney, and liver, were used to investigate the underlying mechanism of copper toxicology in G. eckloni. RESULTS: We compared the transcriptomes from different tissues with different time durations of copper ion treatment. After 72 h copper ion treatment, the number of genes with different expression in gills and liver changed dramatically, but not in kidneys. In KEGG functional enrichment, the pattern of differentially expressed genes (DEGs) was also similar in the gills and liver. The most enriched pathway of DEGs was "Ribosome" in both tissues. Furthermore, we analyzed the expression levels of genes involved in oxidative stress response and protein synthesis using qPCR and RNA-seq data. Our results showed that several genes involved in oxidative stress response were up-regulated both in gills and liver. Up-regulation of these genes indicated that copper treatment caused oxidative stress, which is likely to result in ribosome damage. In addition, our results showed that the expression of Eef1b2, a transcription elongation factor, was decreased in the liver und...