高等学校化学学报 ›› 2002, Vol. 23 ›› Issue (4): 526.

• 研究论文 • 上一篇    下一篇

稀土离子诱导钙调蛋白构象变化后的单克隆抗体制备

李伟国1, 祁超1,2, 杜丽2, 刘仔2, 赵大庆1   

  1. 1. 中国科学院长春应用化学研究所稀土化学与物理开放实验室, 长春 130022;
    2. 中国人民解放军军需大学生物化学教研室, 长春 130062
  • 收稿日期:2001-06-28 出版日期:2002-04-24 发布日期:2002-04-24
  • 通讯作者: 赵大庆(1963年出生),男,博士,研究员,博士生导师,主要从事生物无机化学研究.
  • 基金资助:

    国家自然科学基金重大项目(批准号:29890280)资助

Preparation of Rare Earth Ion Induced Conformation-specificAnti-calmodulin Monoclonal Antibody

LI Wei-Guo1, QI Chao1,2, Du Li2, LIU Zi2, ZHAO Da-Qing1   

  1. 1. Key Laboratory of Rare Earth Chemistry and Physics, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China;
    2. Department of Biochemistry, Quartermaster University of PLA, Changchun 130062, China
  • Received:2001-06-28 Online:2002-04-24 Published:2002-04-24

摘要: 采用单克隆抗体技术研究了三价稀土离子与钙调蛋白作用后对其与靶分子识别能力的影响。牛脑钙调蛋白经2.4-二硝基氟苯修饰后再结合三价的铕离子,然后免疫Balb/c小鼠,经过3次免疫后在小鼠血清中检测到相应的抗体,抗体效价为1:12000;用杂交瘤细胞技术制备出一株抗钙调蛋白的单克隆抗体细胞株2C3;酶联免疫吸附法(ELISA)测定结果证实钙调蛋白结合稀土离子前后对该抗体的识别能力存在显着差异,表明该抗体可以用于进一步研究金属离子对钙调蛋白构象变化及其对靶分子识别的影响。

关键词: 钙调蛋白, 稀土离子, 单克隆抗体

Abstract: Monoclonal antibody technique was employed to detect the conformational change of calmodulin induced by metal ions.Bovine calmodulin was firstly modified by 2,4-dinitrofluorobenzene to improve its immunogenicity, then, the derived protein was saturated with trivalent europium ions and injected to Balb/c mice as antigen.After four times of immunization, a corresponding antibody was detected and its titer in serum was determined as 1:12000.By fusing of the spleen cells with hybridoma cells, a europium induced conformation-specific anti-calmodulin monoclonal antibody cell strain named as 2C3 was produced successfully.The molecular recognition ability of antibody to apocalmodulin and holocalmodulin showed a significant difference, indicating that this antibody could be applied to the studies of different effects of metal ions on the conformational change of calmodulin and its interaction with target molecules.

Key words: Calmdoulin protein, Rare earth ion, Monoclonal antibody

中图分类号: 

TrendMD: