Identification and characterization of Cynoglossus semilaevis microRNA response to Vibrio anguillarum infection through high-throughput sequencing

文献类型： 外文期刊

第一作者： Sha, Zhenxia

作者： Sha, Zhenxia;Gong, Guangye;Lu, Yang;Wang, Lei;Chen, Songlin;Gong, Guangye;Lu, Yang;Wang, Shaolin;Wang, Qilong

作者机构：

关键词： Cynoglossus semilaevis;miRNA;High-throughput sequencing;Immune;Vibrio anguillarum

期刊名称：DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY （ 影响因子：3.636； 五年影响因子：3.654 ）

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收录情况： SCI

摘要： MicroRNAs (miRNA) play key regulatory roles in diverse biological processes. Cynoglossus semilaevis is an important commercial mariculture fish species in China. To identify miRNAs and investigate immunerelated miRNAs of C. semilaevis, we performed high-throughput sequencing on three small RNA libraries prepared from C. semilaevis immune tissues (liver, head kidney, spleen, and intestine). One library was prepared under normal conditions (control, CG); two were prepared during Vibrio anguillarum infection, where vibriosis symptoms were obvious and non-obvious (HOSG and NOSG, respectively). We obtained 11,216,875, 12,313,404, and 11,398,695 clean reads per library, respectively. Bioinformatic analysis identified 452 miRNAs, including 24 putative novel miRNAs. We analyzed differentially expressed miRNAs between two libraries using pairwise comparison. For NOSG-CG, there was significant differential expression of 175 (38.72%) miRNAs. There was significant differential expression of 215 (47.57%) miRNAs between HOSG and CG. Compared with CG, The HOSG-NOSG comparison revealed significantly different expression of 122 (26.99%) miRNAs respectively. Real-time quantitative PCR (RT-qPCR) experiments were performed for 10 miRNAs of the three samples, and agreement was found between the sequencing and RT-qPCR data. For miRNAs that were significantly differentially expressed, functional annotation of target genes by Gene Ontology enrichment and Kyoto Encyclopedia of Genes and Genomes pathway analysis indicated that a set of miRNAs that were expressed highly abundantly and significantly differentially were might involved in immune system development and immune response. To our understanding, this is the first report of comprehensive identification of C. semilaevis miRNAs being differentially regulated in immune tissues (liver, head kidney, spleen, and intestine) in normal conditions relating to V. anguillarum infection. Many miRNAs were differentially regulated upon pathogen exposure. This work provides an opportunity for further understanding of the molecular mechanisms of miRNA regulation in C. semilaevis host-pathogen interactions.

分类号： R392

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