数字农科院2.0

Dna Methylomes And Transcriptomes Analysis R.eveal Implication Of Host D na Methylation Machinery In Bmnpv Proliferation In Bombyx Mori

文献类型： 外文期刊

作者： Zhang, Shaolun;Shang, Qi;Zhong, Jinbo;Guo, Xijie;Yin, Haotong;W, Ping;Hou, Qirui;Hou, Qirui;Guo, Xijie;Huang, Haoling;W, Ping;Hou, Qirui;W, Ping

作者机构：

关键词： Bombyx mori; Epigenetic regulation; BmNPV; DNA methylation; Host-virus interaction; Insect immune response; inhibitor of apoptosis

期刊名称： BMC GENOMICS

ISSN： 1471-2164

年卷期： 2019 年 20 卷 1 期

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摘要： Background Bombyx mori nucleopolyhedrosis virus (BmNPV) is a major pathogen that threatens the sustainability of the sericultural industry. DNA methylation is a widespread gene regulation mode in epigenetics, which plays an important role in host immune response. Until now, little has been known about epigenetic regulation on virus diseases in insects. This study aims to explore the role of DNA methylation in BmNPV proliferation. Results Inhibiting DNA methyltransferase (DNMT) activity of silkworm can suppress BmNPV replication. The integrated analysis of transcriptomes and DNA methylomes in silkworm midguts infected with or without BmNPV showed that both the expression pattern of transcriptome and DNA methylation pattern are changed significantly upon BmNPV infection. A total of 241 differentially methylated regions (DMRs) were observed in BmNPV infected midguts, among which, 126 DMRs were hyper-methylated and 115 DMRs were hypo-methylated. Significant differences in both mRNA transcript level and DNA methylated levels were found in 26 genes. BS-PCR validated the hypermethylation of BGIBMGA014008, a structural maintenance of chromosomes protein gene in the BmNPV-infected midgut. In addition, DNMT inhibition reduced the expression of inhibitor of apoptosis family genes, iap1 from BmNPV, Bmiap2, BmSurvivin1 and BmSurvivin2. Conclusion Our results indicate that DNA methylation plays positive roles in BmNPV proliferation and loss of DNMT activity could induce the apoptosis of infected cells to suppress BmNPV proliferation. Our results may provide a new idea and research direction for the molecular mechanism on insect-virus interaction.

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