食品科学 ›› 2011, Vol. 32 ›› Issue (9): 236-240.doi: 10.7506/spkx1002-6630-201109053

• 生物工程 • 上一篇    下一篇

抗赭曲霉毒素A单克隆抗体的制备及免疫学鉴定

孙亚宁,滕 蔓,胡骁飞,侯玉泽,柴书军,刘庆堂,职爱民,王 磊,张改平,邓瑞广   

  1. 1.河南省农业科学院,农业部动物免疫学重点开放实验室,河南省动物免疫学重点实验室 2.河南科技大学食品与生物工程学院
  • 出版日期:2011-05-15 发布日期:2011-04-11
  • 基金资助:
    河南省基础与前沿技术研究重大项目(092300410028);“十一五”国家科技支撑计划项目(2006BAK02A21)

Preparation and Immunological Characterization of Monoclonal Antibody against Ochratoxin A

SUN Ya-ning1,2,TENG Man1,HU Xiao-fei1,HOU Yu-ze2,CHAI Shu-jun1,LIU Qing-tang1,ZHI Ai-min1,WANG Lei2,ZHANG Gai-ping1,DENG Rui-guang1,*   

  1. 1. Key Laboratory of Animal Immunology of Ministry of Agriculture, Henan Key Laboratory of Animal Immunology, Henan Academy of Agricultural Sciences, Zhengzhou 450002, China;2. College of Food and Bioengineering, Henan University of Science and Technology, Luoyang 471003, China
  • Online:2011-05-15 Published:2011-04-11

摘要: 通过碳化二亚胺法(EDC法)制备免疫原OTA-BSA,并免疫小鼠,经杂交瘤技术建立产抗赭曲霉毒素A(OTA)单克隆抗体的杂交瘤细胞株1株。通过体内诱生腹水法制备腹水,纯化后对其亚型、效价、灵敏性、亲和性、特异性等免疫学特性进行鉴定;单抗亚类为IgG1型,间接ELISA效价1:6.4×105,IC50为112.8pg/mL,亲和常数为9.74×1011L/mol,与赭曲霉毒素B交叉反应率为5.6%,与其他常见真菌产物交叉小于0.003%;本实验制备的抗OTA单克隆抗体具有高效、敏感、特异等特点,适合OTA的免疫学快速检测。

关键词: 赭曲霉毒素A, 单克隆抗体, 灵敏度, 特异性

Abstract: In this paper, immunogen OTA-BSA was prepared by EDC method and used to immunize mice for constructing a hybridoma cell line with the ability to secrete anti-OTA monoclonal antibody (anti-OTA mAb). The preparation of ascites was carried out using in vivo induction method. Immunological properties such as subclass, titer, sensitivity, affinity and specificity of the purified mAb were characterized. The mAb against OTA was type IgG1, with ELISA titer of 1: 6.4 × 105, IC50 value of 112.8 pg/mL, affinity constant (Ka) of 9.74×1011 L/mol, cross-reactivity to OTB and other fungus metabolites of 5.6% and less than 0.003%, respectively. The anti-OTA mAb was characterized with high titer, sensitivity and specificity and can thereby be used for rapid immunological detection of OTA.

Key words: ochratoxin A(OTA), monoclonal antibody, sensitivity, specificity

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