转基因玉米中膦丝菌素乙酰转移酶双抗体夹心ELISA检测方法的建立

被引:6
作者
刘志浩 [1 ]
高丽丽 [1 ]
王新桐 [1 ]
孙佳芝 [1 ]
杨正友 [2 ]
柴同杰 [1 ]
机构
[1] 山东农业大学动物科技与动物医学院
[2] 山东农业大学生命科学学院
关键词
PAT蛋白; 单克隆抗体; 双抗体夹心ELISA; Bt176;
D O I
10.13207/j.cnki.jnwafu.2013.11.019
中图分类号
S513 [玉米(玉蜀黍)];
学科分类号
摘要
【目的】以单克隆抗体(monoclonal antibody,mAbs)为基础,建立检测膦丝菌素乙酰转移酶(the phosphinothricin acetyltransferase,PAT)的双抗体夹心ELISA方法,为转基因玉米PAT蛋白的检测提供参考。【方法】由P3301质粒扩增出膦丝菌素乙酰转移酶基因(blalaphos resistance gene)bar,并与表达载体pET28a构建重组质粒,诱导表达产生外源性PAT蛋白;以纯化后的PAT蛋白为免疫原,制备mAbs,建立双抗体夹心ELISA方法,并与PCR检测方法进行比较,确定该方法的准确性和可靠性。【结果】应用mAbs 4D5和3E8成功建立了检测PAT蛋白的双抗体夹心ELISA方法,其有效检测范围为3.125~50ng/mL。采用该夹心ELISA方法对36份已知转基因背景的玉米样品进行了检测,根据阴阳性判定值OD450>0.210,检测出含PAT蛋白的Bt176阳性样品4份,以bar基因为检测目标利用传统PCR方法也检测出相同的Bt176样品4份,2种检测方法的符合率为100%。【结论】利用建立的双抗体夹心ELISA免疫学检测方法,可以对转基因玉米中的PAT蛋白进行准确、特异、有效的检测。
引用
收藏
页码:45 / 50
页数:6
相关论文
共 13 条
  • [1] The Development and Standardization of Testing Methods for Genetically Modified Organisms and their Derived Products[J]. Dabing Zhang~* and Jinchao Guo National Center for Molecular Characterization of Genetically Modified Organisms,School of Life Sciences and Technology,Shanghai Jiao Tong University,Shanghai 200240,China. Journal of Integrative Plant Biology. 2011(07)
  • [2] 双抗体夹心酶联免疫法检测不同样品中的蓖麻毒素
    郎立伟
    王玉霞
    王晨宇
    赵宇
    贾培媛
    傅风华
    [J]. 国际药学研究杂志, 2009, 36 (01) : 12 - 16
  • [3] bar基因在大肠杆菌中的高效表达及其表达产物的分离和纯化
    许文涛
    黄昆仑
    罗云波
    [J]. 农业生物技术学报, 2004, (05) : 583 - 588
  • [4] Detection of GM soybean in food products by simultaneous employment of three pairs of PCR primers[J] . Food Research International . 2008 (3)
  • [5] A specific qualitative and real-time PCR detection of MON863 maize based on the 5′-transgene integration sequence
    Zhu, Hong
    Zhao, Xiao
    Jia, Junwei
    Sun, Jianping
    Zhao, Kai
    [J]. JOURNAL OF CEREAL SCIENCE, 2008, 48 (03) : 592 - 597
  • [6] Detection of Roundup Ready soy in highly processed products by triplex nested PCR[J] . Minghui Zhang,Xuejun Gao,Yanbo Yu,Jinxia Ao,Jun Qin,Yonghao Yao,Qingzhang Li. Food Control . 2006 (10)
  • [7] Detection approaches for genetically modified organisms in foods
    Deisingh, AK
    Badrie, N
    [J]. FOOD RESEARCH INTERNATIONAL, 2005, 38 (06) : 639 - 649
  • [8] Safety evaluation of the phosphinothricin acetyltransferase proteins encoded by the pat and bar sequences that confer tolerance to glufosinate-ammonium herbicide in transgenic plants[J] . Corinne Hérouet,David J. Esdaile,Bryan A. Mallyon,Eric Debruyne,Arno Schulz,Thomas Currier,Koen Hendrickx,Robert-Jan van der Klis,Dominique Rouan. Regulatory Toxicology and Pharmacology . 2004 (2)
  • [9] Methionine sulfoximine, an alternative selection for the bar marker in plants[J] . S.C. Maughan,C.S. Cobbett. Journal of Biotechnology . 2003 (2)
  • [10] Detection of genetically modified organisms in foods
    Ahmed, FE
    [J]. TRENDS IN BIOTECHNOLOGY, 2002, 20 (05) : 215 - 223