食品科学

• 安全检测 • 上一篇    下一篇

双酚A单克隆抗体的制备及酶联免疫分析方法的建立

许 龙1,章 英2,朱立鑫1,范 艳1,赖 肖2,孟 玮1,胡 娜1,刘仁荣1,*   

  1. 1.江西科技师范大学生命科学学院,江西 南昌 330013;2.南昌市疾病预防控制中心,江西 南昌 330038
  • 出版日期:2015-10-25 发布日期:2015-10-20
  • 通讯作者: 刘仁荣
  • 基金资助:

    国家自然科学基金地区科学基金项目(81360429);江西省高等学校科技落地计划项目(GJJ13573/13574);
    南昌市科技计划项目(洪财企[2012],37号-23)

Preparation of Monoclonal Antibody for the Detection of Bisphenol A by Enzyme-Linked Immunoassay

XU Long1, ZHANG Ying2, ZHU Lixin1, FAN Yan1, LAI Xiao2, MENG Wei1, HU Na1, LIU Renrong1,*   

  1. 1. College of Life Science, Jiangxi Science and Technology Normal University, Nanchang 330013, China;
    2. Nanchang Center for Disease Control and Prevention, Nanchang 330038, China
  • Online:2015-10-25 Published:2015-10-20
  • Contact: LIU Renrong

摘要:

采用活泼酯法将双酚A的结构类似物双酚酸与载体蛋白偶联制备人工抗原,用制备的人工抗原免疫BALB/c小鼠,采用聚乙二醇法进行细胞融合制备双酚A单克隆抗体,成功获得一株分泌抗双酚A单克隆抗体的细胞株3H1,经鉴定抗体属于IgG1亚型,轻链为κ,并建立了间接竞争酶联免疫分析法。线性范围为1~50 ng/mL,最低检测限为0.43 ng/mL,半数抑制浓度为6.56 ng/mL。回收率为82.83%~101.94%,变异系数为2.94%~12.95%。该方法具有较高的灵敏度和特异性,具有良好的应用前景。

关键词: 双酚A, 单克隆抗体, 酶联免疫分析法

Abstract:

4,4-Bis (4-hydroxyphenyl) valeric acid (BVA), a derivative of bisphenol A (BPA), was chosen as the hapten to
prepare the artificial antigen. An active ester method was used for coupling BPA hapten with keyhole limpet hemocyanin
(KLH) and ovalbumin (OVA), respectively. BALB/c mice were immunized with the immune antigen to produce antibody.
After cell fusion with PE G method, the hybridoma cell lines generating anti-BPA monoclonal antibodies were obtained. The
monoclonal antibody was identified as IgG1 subtype with κ light chain. An indirect competitive enzyme-linked immunoassay
(ELISA) was set up using the monoclonal antibody. The linear range of the inhibition curve was between 1 and 50 ng/mL.
The limit of detection was 0.43 ng/mL, and the IC50 value was 6.56 ng/mL. The recovery rates of BPA in water ranged from
82.83% to 101.94% with variation coefficients of 2.94%–12.95%.The proposed immunoassay offers a great potential for
sensitive and specific detection of BPA in food safety monitoring.

Key words: bisphenol A, monoclonal antibody, enzyme-linked immunoassay

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