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Identification and expression profiling analysis of microRNAs in Nile tilapia (Oreochromis niloticus) in response to Streptococcus agalactiae infection.
Gao, Chengbin; Fu, Qiang; Yang, Ning; Song, Lin; Tan, Fenghua; Zhu, Jiajie; Li, Chao.
Afiliação
  • Gao C; Marine Science and Engineering College, Qingdao Agricultural University, Qingdao, 266109, People's Republic of China.
  • Fu Q; Marine Science and Engineering College, Qingdao Agricultural University, Qingdao, 266109, People's Republic of China.
  • Yang N; Marine Science and Engineering College, Qingdao Agricultural University, Qingdao, 266109, People's Republic of China.
  • Song L; College of Marine Science and Biological Engineering, Qingdao University of Science & Technology, Qingdao, 266011, China.
  • Tan F; Marine Science and Engineering College, Qingdao Agricultural University, Qingdao, 266109, People's Republic of China.
  • Zhu J; Guangxi Academy of Fishery Sciences, Guangxi, 530021, China. Electronic address: zhujiajie504@sina.com.
  • Li C; Marine Science and Engineering College, Qingdao Agricultural University, Qingdao, 266109, People's Republic of China. Electronic address: leoochao@163.com.
Fish Shellfish Immunol ; 87: 333-345, 2019 Apr.
Article em En | MEDLINE | ID: mdl-30648624
MicroRNAs (miRNAs) play vital regulatory roles in various biological processes, including in immune responses. Nile tilapia (Oreochromis niloticus) is an important commercial fish species in China. To identify immune-related miRNAs of O. niloticus, 4 libraries from liver during S. agalactiae infection (0 h, 5 h, 50 h, and 7 d) were sequenced by high-throughput sequencing technology in tilapia. We obtained 10,703,531, 11,507,163, 11,180,179 and 13,408,414 clean reads per library, respectively. In our results, a total of 482 miRNAs were identified through bioinformatic analysis, including 220 conserved miRNAs and 262 putative novel miRNAs. Moreover, 21 (4.36%), 50 (10.37%), and 46 (9.54%) miRNAs were significantly differentially expressed at 5 h, 50 h and 7 d, respectively. In addition, 6939 target genes regulated by these differentially expressed miRNAs were predicted, and their functional annotations were predicted by Gene Ontology (GO) enrichment and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway analysis, which revealed that a majority of differentially expressed miRNAs were involved in apoptotic process, metabolic process, and immune responses. Finally, Real-time quantitative PCR experiments were performed for 7 miRNAs by stem-loop RT-PCR, and a general agreement was confirmed between the sequencing and RT-qPCR data. To our understanding, this is the first report of comprehensive identification of O. niloticus miRNAs being differentially regulated in liver related to S. agalactiae infection. This work provides an opportunity for further understanding of the molecular mechanisms of miRNA regulation in O. niloticus host-pathogen interactions, and genetic resources for molecular assistant selection for disease resistant breeding program.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Ciclídeos / MicroRNAs / Transcriptoma / Doenças dos Peixes Tipo de estudo: Diagnostic_studies Limite: Animals Idioma: En Ano de publicação: 2019 Tipo de documento: Article

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Ciclídeos / MicroRNAs / Transcriptoma / Doenças dos Peixes Tipo de estudo: Diagnostic_studies Limite: Animals Idioma: En Ano de publicação: 2019 Tipo de documento: Article