绿色荧光蛋白基因与猪瘟兔化弱毒疫苗株E2基因在杆状病毒中的融合表达  

Fusion Expression of GFP and HCLV E2 Gene in Baculovirus System

作　　者：范学政[1] 王琴[1] 陈振海[2] 王在时[1] 赵耘[1] 宁宜宝[1] 

机构地区：[1]中国兽医药品监察所农业部兽药创新与生物安全评价重点开放实验室,北京100081 [2]中国农业大学动物医学院,北京100094

出　　处：《中国兽医学报》2005年第6期564-566,共3页Chinese Journal of Veterinary Science

基　　金：国家重点基础研究发展规划资助项目(G1999011903);国家自然科学基金资助项目(30270984)

摘　　要：为了研究猪瘟病毒E 2糖蛋白的立体结构及生物学特性,将增强型荧光蛋白基因(EGFP)和猪瘟兔化弱毒疫苗株(HCLV)E 2基因经PCR扩增后克隆至pB lueB acH is2A质粒,与杆状病毒DNA共转染后经PCR鉴定获得了含有EGFP和HCLV E 2融合基因(GFPTE 2)的重组杆状病毒rBACTE 2-339,并将其感染sf9细胞后在荧光显微镜下观察到了亮绿色荧光,说明融合基因已初步表达。The envelope glycoprotein E2 of classical swine fever virus（CSFV） was a protective antigen inducing neutral antibody. In order to get soluble recombinant E2 glycoprotein and inspect the protein expression dynamics convinently, the en hanced green fluorescence protein（EGFP） and hog cholera lapinised virus （HCLV） E2 gene were cloned into baculovirus transfer vector pBlueBacHis2A and the recombinant plasmid pBGFPTE2 was constructed. After co-transfection pBGFPTE2 and linear baculovirus Bac-N-Blue into sf9 cell with cationic lipid reagent Cellfectin,homological recombination and plaque purification,the pure recombinant baculovirus clone named rBACTE2-339 were harvested and proliferated in sf9 cell to generate P2 stock. After infection with P2 stock,brilliant green fluorescence was detected under the fluorescence microscopy confirming the heterogenous protein expression of recombinant baculovirus in sf9 cell.

关 键 词：猪瘟病毒 E2基因 杆状病毒 融合表达 

分 类 号：S852.61[农业科学—基础兽医学] Q78[农业科学—兽医学]