榛子主要过敏原Cor h 1单克隆抗体识别抗原表位区域的确定  

Identification of hazelnut antigenic epitope regions recognized by anti-Cor h 1 monoclonal antibodies

作　　者：赵郭存[1] 张强[1] 杨波[1] 吉琼梅[1] 刘志刚[1] 

机构地区：[1]深圳大学过敏反应与免疫学研究所,深圳518060

出　　处：《食品安全质量检测学报》2012年第4期264-269,共6页Journal of Food Safety and Quality

基　　金：国家自然科学基金项目(31101280;81271950);深圳市重点实验室组建项目(SW201110010);深圳大学基础研究科研项目(201101)

摘　　要：目的确定已获得的四株榛子主要过敏原Cor h1单克隆抗体识别的抗原表位区域。方法构建谷胱甘肽疏基转移酶(GST)与Cor h1不同截短体的表达载体并表达GST-Cor h1融合蛋白,采用ELISA和Western blot检测单抗与不同融合蛋白的反应,并结合DNAstar表位分析软件推知不同单抗的抗原识别表位区域。结果确定了四株Cor h1单抗的抗原识别表位区域,分别是4G7和2H3抗体的抗原表位位于Cor h1第120～126位氨基酸,5F2和1G4抗体的抗原表位位于Cor h1第43～52位氨基酸。结论四株Cor h1单抗的抗原识别表位区域的确定,为Cor h1的进一步研究和食品安全检测奠定了基础。Objective To identify the antigenic epitope regions recognized by anti-Cor h 1 monoclonal antibodies.Methods Five expression vectors of truncated Cor h 1 were constructed and the truncated Cor h 1-GST fusion proteins were expressed in E.coli.The binding activities of anti-Cor h 1 monoclonal antibodies(mAbs) with truncated Cor h 1 were analyzed by ELISA and Western blot.According to the speculative epitope regions,expression vectors of potential epitopes were constructed and the GST-epitope fusion proteins were expressed in E.coli.The fusion proteins were analyzed by ELISA and Western blot with mAbs to confirm the epitope regions,with the DNAstar epitope analysis software.Results Epitope regions recognized by four anti-Cor h 1 mAbs were identified.The epitopes recognized by 4G7 and 2H3 were located in the region from 120th to 126th amino acids of Cor h 1,5F2 and 1G4 in the region from 43th to 54th amino acids.Conclusion The identification of epitope regions recognized by four anti-Cor h 1 mAbs will benefit the research on Cor h 1 and the food safe examination.

关 键 词：榛子过敏 COR H 1 单克隆抗体 抗原表位 

分 类 号：R392[医药卫生—免疫学]