食品科学 ›› 2009, Vol. 30 ›› Issue (24 ): 283-286.doi: 10.7506/spkx1002-6630-200924061

• 分析检测 • 上一篇    下一篇

孔雀石绿单克隆抗体的制备及直接竞争ELISA方法的建立

李晓丽1,陈雪岚2,刘春梅3,熊勇华1 ,*   

  1. 1.南昌大学 食品科学与技术国家重点实验室 2.江西师范大学生命科学学院 3.无锡中德伯尔生物技术有限公司
  • 收稿日期:2009-08-21 出版日期:2009-12-15 发布日期:2010-12-29
  • 通讯作者: 熊勇华1 ,* E-mail:yhxiongchen@163.com

Preparation of Monoclonal Antibody of Malachite Green and Establishment of Direct Competitive ELISA

LI Xiao-li1,CHEN Xue-lan2,LIU Chun-mei3,XIONG Yong-hua1,*   

  1. 1. State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China;2. College of Life
    Science, Jiangxi Normal University, Nanchang 330022, China ;3. Wuxi Zodolabs Biotech Co. Ltd., Wuxi 214174, China
  • Received:2009-08-21 Online:2009-12-15 Published:2010-12-29
  • Contact: XIONG Yong-hua1,* E-mail:yhxiongchen@163.com

摘要:

通过合成羧基化孔雀石绿,采用活泼酯法制备孔雀石绿免疫抗原CMG-BSA、检测抗原CMG-OVA。采用CMG-BSA 免疫 BALB/c 小鼠,经融合、筛选和克隆化获得了一株稳定的抗孔雀石绿单克隆抗体,并建立了检测孔雀石绿的直接竞争ELISA 方法。ELISA 方法的最佳操作参数:孔雀石绿抗体稀释倍数1:16000(1mg/ml),酶标抗原(CMG-HRP)使用质量浓度0.2μg/ml。该方法具有良好的灵敏度和特异性,IC50 值0.3ng/ml,最低检测灵敏度达到0.05ng/ml,标准曲线方程为y =- 20.888x + 81.423(R2 = 0.9813)。

关键词: 孔雀石绿, 单克隆抗体, 直接竞争ELISA

Abstract:

Carboxyl-malachite green (CMG) was synthesized and immunogen was prepared by coupling CMG with carrier protein BSA through an ester activation method. BALB/c mice were subjected to injection of CMG-BSA and a hybridoma cell line secreting monoclonal antibody against MG was constructed after fusion, screening and cloning experiments. A direct competitive ELISA for detection MG was established with 0.2 μg/ml CMG-HRP and 1:16000 of antibody dilution ratio. This method exhibited high sensitivity and excellent specificity for detecting MG. The standard regression equation of this method was y =-20.888x +81.423 (R2= 0.9813) with a detection limit for MG at the level of 0.05 ng/ml and IC50 was 0.3 ng/ml.

Key words: malachite green, monoclonal antibody, direct competitive ELISA

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