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  • Title: Roles of miR-278-3p in IBP2 regulation and Bombyx mori cytoplasmic polyhedrosis virus replication.
    Author: Wu P, Qin G, Qian H, Chen T, Guo X.
    Journal: Gene; 2016 Jan 10; 575(2 Pt 1):264-9. PubMed ID: 26348138.
    Abstract:
    Bombyx mori cytoplasmic polyhedrosis virus (BmCPV) is a major viral pathogen of silkworm and remains a big challenge to the sericultural industry. Insulin-related peptide binding protein 2 (IBP2) gene, induced by BmCPV infection may play an important role in B. mori immune response. MicroRNAs (miRNAs) are small noncoding RNAs that regulate gene expression at the post-transcriptional level and play an important role in various processes, including immunity and antiviral response. In this study, we identified IBP2 as one of the targets for miR-278-3p by using luciferase reporter assay. Overexpression of miR-278-3p negatively regulates the expression of IBP2 in silkworm larvae and positively regulates the mRNA transcript level of BmCPV. Our results suggest that miR-278-3p may play an important role in BmCPV replication. It's the first report on bmo-miRNAs in response to BmCPV infection and could provide a new clue to explore the molecular mechanism of BmCPV infection and host immunity.
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