1. The Roles of Epinephelus coioides miR-122 in SGIV Infection and Replication
- Author
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Shaowen Wang, Qiwei Qin, Pin Hong Li, Yu Ling Su, He Jia Chen, Jia Yang He, Hong Yan Sun, Xiaohong Huang, Gang Wang, and You Hua Huang
- Subjects
0301 basic medicine ,Genes, Viral ,medicine.medical_treatment ,Epinephelus coioides ,Apoptosis ,Virus Replication ,Applied Microbiology and Biotechnology ,Iridovirus ,Biological pathway ,Fish Diseases ,03 medical and health sciences ,0302 clinical medicine ,Transcription (biology) ,microRNA ,medicine ,MiR-122 ,Animals ,Grouper ,Protease ,biology ,NF-kappa B ,biology.organism_classification ,DNA Virus Infections ,miR-122 ,Cell biology ,Transcription Factor AP-1 ,MicroRNAs ,SGIV ,030104 developmental biology ,Viral replication ,030220 oncology & carcinogenesis ,Bass ,Original Article - Abstract
In mammals, mature miR-122 is 22 nucleotides long and can be involved in regulating a variety of physiological and biological pathways. In this study, the expression profile and effects of grouper Epinephelus coioides miR-122 response to Singapore grouper iridovirus (SGIV) infection were investigated. The sequences of mature microRNAs (miRNAs) from different organisms are highly conserved, and miR-122 from E. coioides exhibits high similarity to that from mammals and other fish. The expression of miR-122 was up-regulated during SGIV infection. Up-regulation of miR-122 could significantly enhance the cytopathic effects (CPE) induced by SGIV, the transcription levels of viral genes (MCP, VP19, LITAF and ICP18), and viral replication; reduce the expression of inflammatory factors (TNF-a, IL-6, and IL-8), and the activity of AP-1 and NF-κB, and miR-122 can bind the target gene p38α MAPK to regulate the SGIV-induced cell apoptosis and the protease activity of caspase-3. The results indicated that SGIV infection can up-regulate the expression of E. coioides miR-122, and up-regulation of miR-122 can affect the activation of inflammatory factors, the activity of AP-1 and NF-κB, and cell apoptosis to regulate viral replication and proliferation.
- Published
- 2021