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稳定表达乙脑病毒结构蛋白的细胞系的建立 被引量：2

Construction of Mammalian Cell Lines Continuously Expressing JEV Structural Proteins
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摘要 以乙型脑炎病毒SA14-14-2疫苗株全长基因组克隆质粒pBR-JTF为模板,通过PCR分别扩增prM-E及C-prM-E基因片段,构建表达乙型脑炎病毒结构蛋白的真核表达质粒pCJE-ME及pCJE-CME。将这2种重组质粒用脂质体法转染BHK-21细胞后,质粒pCJE-ME表现明显的细胞毒性,转染细胞不能存活;质粒pCJE-cME可导致筛选到表达JEV结构蛋白的稳定细胞系,这种稳定表达JEV结构蛋白的细胞系通过PCR扩增细胞系基因组、ELISA、Western Blot、间接免疫荧光等方法得到鉴定。研究结果表明在C蛋白存在下,乙型脑炎病毒C-prM-E蛋白可以在BHK细胞中稳定表达,为研制JEV新型复制子颗粒疫苗提供了便利工具。 Based on the infectious clone of JEV vaccine strain SA14-14-2, prM-E genes and C-prM-E genes were cloned into pCDNA3.1 vector. The recombinant plasmid pCJE-ME was transfected into BHK-21 cells, the expressed proteins were toxic to the cell growth and accelerated the cell death. But when transfected with the plasmid pCJE-CME, the cell lines continuously expressing structural proteins could be selected with G418. And the expression products of pCJE-CME vector could be detected by ELISA, Western Blot and IFA assay. It showed that the JEV capsid protein could enhance the stability of the cell lines expressing the structural proteins. The established cell lines can make the acquirement of the virus-like particles much easier.
作者 刘珊 黄莺 杨鹏 孙志伟 俞炜源
机构地区 军事医学科学院生物工程研究所蛋白质工程室
出处 《病毒学报》 CAS CSCD 北大核心 2009年第4期279-285,共7页 Chinese Journal of Virology
关键词 乙型脑炎病毒 结构蛋白 细胞系 Japanese encephalitis virus（JEV） Structural proteins Cell line
分类号 R373.3 [医药卫生—病原生物学]
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参考文献18

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共引文献24

同被引文献23

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病毒学报
2009年 第4期

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