中国畜牧兽医

• 生物技术 • 上一篇    下一篇

抗κ-酪蛋白单克隆抗体的制备及其特性鉴定

张莹,周玉,李岩松,孟星宇,褚晓红,卢士英,任洪林,胡盼,柳增善,王男男,李丹   

  1. (人兽共患病研究教育部重点实验室,吉林大学人兽共患病研究所,吉林大学动物医学院,吉林长春 130062)
  • 收稿日期:2013-09-26 出版日期:2014-03-20 发布日期:2014-05-15
  • 通讯作者: 周玉(1969—),男,内蒙古人,教授,博士生导师,研究方向:食品及水环境安全。E-mail:zhouyu69@sina.com;Tel: 0431-87835734
  • 作者简介:张莹(1987—),女,河北人,硕士生,研究方向:兽医公共卫生。
  • 基金资助:

    国家自然科学基金(61171022、60971011)。

Preparation and Characteristics Identification of Anti-kappa Casein Monoclonal Antibody

ZHANG Ying, ZHOU Yu, LI Yan-song,MENG Xing-yu,CHU Xiao-hong,LU Shi-ying,REN Hong-lin,HU Pan,LIU Zeng-shan,WANG Nan-nan,LI Dan   

  1. (Key Laboratory of Zoonosis, Ministry of Education, Institute of Zoonosis, College of Veterinary Medicine, Jilin University, Changchun 130062, China)
  • Received:2013-09-26 Online:2014-03-20 Published:2014-05-15

摘要: 试验为制备抗κ-酪蛋白单克隆抗体并对其进行特性鉴定,采用足垫免疫κ-酪蛋白的方法刺激BALB/c小鼠产生免疫应答,将小鼠腘淋巴结细胞与骨髓瘤细胞在PEG诱导下进行融合,通过克隆化培养获得了能稳定分泌抗κ-酪蛋白抗体的杂交瘤细胞株,并利用Protein G亲和层析柱纯化腹水获得了单克隆抗体。试验获得了3株杂交瘤细胞株:1C4、3G3、3E6,所分泌的抗体亚类均为IgG1,其中3G3与3E6抗原识别表位不同,1C4与3E6抗原识别表位相近,1C4株腹水纯化后效价为1.28×106,其亲和力常数为2.89×108 mol/L。试验制备出了亲和力较好的抗κ-酪蛋白单克隆抗体,为牛奶酪蛋白的快速检测奠定了基础。

关键词: κ -酪蛋白; 单克隆抗体; 特性鉴定

Abstract: To obtain the anti-kappa casein monoclonal antibody and complete the identification of the antibody characteristics. The BALB/c mice were immunized with kappa casein using foot-pad immunization. Popliteal lymph node cells from the immunized mice were fused with SP2/0 myeloma cells in the presence of PEG. Three hybridoma strains (1C4, 3G3, 3E6) which secreted the antibody specific for kappa casein were obtained.The sub-class of the antibodies were IgG1. The ascites were purified by Protein G affinity layer absorption column. The antigenic epitope of 3G3 and 3E6 were different and it was close between 1C4 and 3E6.The titer of purified ascites(1C4) was 1.28×106 and the affinity constant was 2.89×108 mol/L. A anti-kappa casein monoclonal antibody with good affinity had been achieved,which provided foundations for the rapid detection of casein in bovine milk samples.

Key words: kappa casein; monoclonal antibody; characteristics identification