Human cytomegalovirus miR-US5-1 inhibits viral replication by targeting Geminin mRNA

Human cytomegalovirus miR-US5-1 inhibits viral replication by targeting Geminin mRNA
复制标题

人巨细胞病毒 miR-US5-1 通过靶向 Geminin mRNA 抑制病毒复制

DOI:
10.1007/s12250-017
复制
发表时间:
2017-10
期刊:
影响因子:
5.5
通讯作者:
Qiang Ruan
Qiang Ruan
中科院分区:
医学2区
文献类型:
--
作者:
Shujuan Jiang;Yujing Huang;Ying Qi;Rong He;Zhongyang Liu;Yanping Ma;Xin Guo;Yaozhong Shao;Zhengrong Sun;Qiang Ruan

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病毒通常通过多种机制为其生存创造有利的细胞条件。人巨细胞病毒(human cytomegalovirus,HCMV)在其感染和致病过程中利用了作为转录后调节因子的微小RNA(microRNAs,miRNAs)。在本研究中,DNA复制抑制剂Geminin(GMNN)被鉴定为hcmv-miR-US 5 -1的直接靶点。hcmv-miR-US 5 -1的过表达可阻断GMNN在HCMV感染过程中的积累,hcmv-miR-US 5 -1或GMNN特异性siRNA导致GMNN表达的降低可减少HCMV DNA在U373细胞中的拷贝。同时,hcmv-miR-US 5 -1的异位表达和GMNN的低表达影响了宿主细胞的周期和增殖。这些结果表明,hcmv-miR-US 5 -1可能通过调节GMNN在HCMV感染过程中的表达动力学来影响病毒复制和宿主细胞环境。
Viruses commonly create favorable cellular conditions for their survival through multiple mechanisms. MicroRNAs (miRNAs), which function as post-transcriptional regulators, are utilized by human cytomegalovirus (HCMV) in its infection and pathogenesis. In the present study, the DNA replication inhibitor Geminin (GMNN) was identified to be a direct target of hcmv-miR-US5-1. Overexpression of hcmv-miR-US5-1 could block the accumulation of GMNN during HCMV infection, and the decrease of GMNN expression caused by hcmv-miR-US5-1 or GMNN specific siRNA reduced HCMV DNA copies in U373 cells. Meanwhile, ectopic expression of hcmv-miR-US5-1 and consequent lower expression of GMNN influenced host cell cycle and proliferation. These results.imply that hcmv-miR-US5-1 may affect viral replication and host cellular environment by regulating expression kinetics of GMNN during HCMV infection.
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