高等学校化学学报 ›› 2002, Vol. 23 ›› Issue (2): 195.

• 研究论文 • 上一篇    下一篇

实时生物分子相互作用分析技术用于链霉亲和素-生物素化抗体的层层组装研究

裴仁军, 崔小强, 杨秀荣, 汪尔康   

  1. 中国科学院长春应用化学研究所电分析化学开放研究实验室, 长春 130022
  • 收稿日期:2000-11-28 出版日期:2002-02-24 发布日期:2002-02-24
  • 通讯作者: 杨秀荣(1946年出生),女,研究员,博士生导师,主要从事生物分析化学研究.E-mail:xryang@ns.ciac.jl.cn E-mail:xryang@ns.ciac.jl.cn
  • 基金资助:

    国家自然科学基金(批准号:20845002)资助

Layer-by-Layer Assembly of Multilayer Films Composed of Streptavidin and Biotinylated Antibody by Real-time Biomolecular Interaction Analysis

PEI Ren-Jun, CUI Xiao-Qiang, YANG Xiu-Rong, WANG Er-Kang   

  1. Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
  • Received:2000-11-28 Online:2002-02-24 Published:2002-02-24

摘要: 使用生物分子相互作用分析(Biomolecular interaction analysis,BIA)技术实时监测了在链霉亲和素表面层层组装亲和素-生物素化抗体多层膜的过程,结果表明,通过链霉亲和素与生物素之间的强亲和作用,能够在表面形成均一的多层膜,并用实时BIA技术求得了每层蛋白质的表面浓度.对于生物素化抗体,单层吸附表面浓度为1.32ng/mm2;对于链霉亲和素,单层吸附表面浓度为2.93ng/mm2.同时对蛋白质在表面的排列状态进行了探讨.

关键词: 表面等离子体子共振, 实时BIA, 层层组装, 链霉亲和素, 生物素化抗体

Abstract: Layer-by-layer assembly of multilayer films of streptavidin and biotinylated antibody was completed on the streptavidin coated surface. Real-time biomolecular interaction analysis(BIA) based on surface plasmon resonance technique was used to monitor the multilayer assembly in solution continuously. The results indicate that the uniform multilayer film can be fabricated successfully based on the strong interaction between streptavidin and biotin. The mean surface mass concentration of each adsorption layer is 1.32 ng/mm2 for biotinylated antibody, 2.93 ng/mm2 for streptavidin, according to the correlation of SPRresponse with surface concentration.

Key words: Surface plasmon resonance, Real-time biomolecular interaction analysis(BIA), Layer-by-layer assembly, Streptavidin, Biotinylated antibody

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