高等学校化学学报 ›› 1998, Vol. 19 ›› Issue (2): 198.

• 论文 • 上一篇    下一篇

pH敏感相分离高分子的免疫分析应用研究

周平, 邓延倬, 曾云鹗   

  1. 武汉大学化学系, 分析测试科学系, 武汉, 430072
  • 收稿日期:1997-01-30 出版日期:1998-02-24 发布日期:1998-02-24
  • 通讯作者: 邓延倬
  • 作者简介:周平,男,27岁,博士研究生.
  • 基金资助:

    国家自然科学基金资助课题(29375207).

Preparation of pH-Sensitive Phase Separating Polymers and Its Application in Immunoassay

ZHOU Ping, DENG Yan-Zhuo, ZENG Yun'e   

  1. Department of Chemistry, Department of Analysis and Testing, Wuhan University, Wuhan, 430072
  • Received:1997-01-30 Online:1998-02-24 Published:1998-02-24

摘要: 合成了溶解性受pH值影响的高分子化合物聚甲基丙烯酸甲酯-丙烯酸-顺丁烯二酸酐(MAM)及聚甲基丙烯酸一丙烯酰胺-N-羟基琥珀酰亚胺丙烯酸酯(MAN),分别与抗体进行了共价连接,将其用作免疫分析载体,利用其溶解性可调节特征,建立了新的免疫分析方法.以聚甲基丙烯酸-丙烯酰胺-N-羟基琥珀酰亚胺丙烯酸酯为载体,对血清中乙肝表面抗原进行了检测,阴阳性检出结果与常规ELISA方法相符.

关键词: 可逆沉淀-溶解性, 免疫分析, 乙肝表面抗原

Abstract: The methylmethacrylate-acrylic acid-maleic anhydrate copolymer(MAM) and methacrylic acid-acrylamide-N-acryloxysuccinimide copolymer(MAN) were prepared. These copolymers were conjugated with monoclonal antibody separately and utilized in a novel separation method for enzyme immunoassay. The polymer precipitated out of water below a critical pH, enabling the polymer-bound immune complex to be separated from the solution. However, the MAM-antibody can show phase separation properties in urine, but can not precipitate in serum. The MAN-antibody showed the insoluble form below pH 3.5 and soluble form above pH4.0. It has been demonstrated to be applicable to determination of antigen by determining HBsAg in serum. Forty-five samples were assayed, and there was a good correlation between the results by this method and ELISA.

Key words: Reversible precipitation-solubility, Immunoassay, HBsAg

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