当前位置: 首页 > 文章 > CRP基因原核表达载体的构建和表达及其免疫原性检测 江西农业大学学报 2006,28 (2) 226-229
Position: Home > Articles > Construction and Expression of CRP Prokaryotic Expression Vector and Its Detection of Immunogenicity Acta Agriculturae Universitatis Jiangxiensis 2006,28 (2) 226-229

CRP基因原核表达载体的构建和表达及其免疫原性检测

作  者:
余云芳;姚伟;张昌菊;鲁林;何正权;乐超银;梁宏伟
单  位:
三峡大学医学院;三峡大学生物技术研究中心
关键词:
C反应蛋白;原核表达;IPTG;免疫原性
摘  要:
采用大肠杆菌表达体系来获得C-反应蛋白(CRP)融合蛋白。以pDNR-CRP质粒为模板,用PCR方法扩增获得全长的CRP基因,将其克隆入表达载体pET28 a(+)中,再转化到宿主菌BL21(DE3)中,加入IPTG诱导表达,表达产物做SDS-PAGE电泳分析,最后做免疫原性检测。成功地构建了CRP基因原核表达载体pET28 a(+)-CRP,经IPTG诱导SDS-PAGE电泳分析表明C-反应蛋白能在大肠杆菌中获得表达,但免疫原性检测初步结果为阴性。结果证明CRP能以融合蛋白的形式在宿主菌BL21(DE3)中得到大量表达,表达产物缺乏免疫原性,其机理还有待进一步试验探讨。
译  名:
Construction and Expression of CRP Prokaryotic Expression Vector and Its Detection of Immunogenicity
作  者:
YU Yun-fang~(1,2),YAO Wei~(1,3*),ZHANG Chang-ju~2,LU Lin~1,HE Zheng-quan~1,YUE Chao-yin~1,LIANG Hong-wei~1 (1.Biotechnology Research Center of China Three Gorges University,Yichang 443002,China;2.Medical Science College of China Three Gorges University,Yichang 443002,China;3.Key Lab of Eco-physiology & Genetic Improvement for Sugarcane,Ministry of Agriculture,P.R.China,Fujian Agricultural and Forestry University,Fuzhou 350002,China)
关键词:
C-reactive protein;prokaryotic-expression;IPTG;immunogenicity
摘  要:
In this study,the C-reactive protein was prepared by the E.coli expression system.The CRP gene was amplified by PCR with the template of pDNR-CRP plasmid,then cloned into the pET-28a(+),and transformed into E.coli BL21(DE3).The recombinant CRP protein was induced and expressed by isopropylthio--D-galactoside(IPTG).SDS-PAGE analysis showed that the target protein was expressed at a high level in E.coli BL21(DE3).However it showed no immunogenicity in the primary detection,further study is needed about its immunogenicity.

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