Effective inhibition of porcine epidemic diarrhea virus by RNA interference in vitro

文献类型： 外文期刊

第一作者： Shen, Haiyan

作者： Shen, Haiyan;Zhang, Chunhong;Liu, Zhicheng;Zhang, Jianfeng;Guo, Pengju

作者机构：

关键词： Porcine epidemic diarrhea virus;RNA interference;Short hairpin RNA

期刊名称：VIRUS GENES （ 影响因子：2.332； 五年影响因子：2.0 ）

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收录情况： SCI

摘要： Porcine epidemic diarrhea virus (PEDV) is a member of the coronaviridae family, which can cause acute and highly contagious enteric disease of swine characterized by severe entero-pathogenic diarrhea in piglets. Currently, the vaccines of PEDV are only partially effective and there is no specific drug available for treatment of PEDV infection. To exploit the possibility of using RNA interference (RNAi) as a strategy against PEDV infection, five shRNA-expressing plasmids targeting the N, M, and S genes of PEDV were constructed and transfected into Vero cells. The cytopathic effect and MTS assays demonstrated that two shRNAs (pSilencer4.1-M1 and pSilencer4.1-N) were capable of protecting cells against PEDV invasion with very high specificity and efficiency. The two shRNA expression plasmids were also able to inhibit the PEDV replication significantly, as shown by detection of virus titers (TCID50/mL). A real-time quantitative RT-PCR further confirmed that the amounts of viral RNAs in cell cultures pre-transfected with these two plasmids were reduced by 95.0 %. Our results suggest that RNAi might be a promising new strategy against PEDV infection.

分类号： R37

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