高等学校化学学报 ›› 2001, Vol. 22 ›› Issue (5): 754.

• 研究论文 • 上一篇    下一篇

带活性末端的热敏高分子的制备及其在荧光免疫分析中的应用

杨黄浩1, 朱庆枝1, 李东辉2, 丁马太1, 许金钩1   

  1. 1. 厦门大学化学化工学院现代分析教育部重点实验室;
    2. 厦门大学抗癌研究中心, 厦门大学化学系, 厦门 361005
  • 收稿日期:2000-06-09 出版日期:2001-05-24 发布日期:2001-05-24
  • 通讯作者: 朱庆枝(1969年出生),男,副教授,主要从事荧光免疫分析和荧光探针研究.
  • 基金资助:

    教育部博士点基金(批准号:97038407;福建省自然科学基金(批准号:B9810004)资助

Preparation of Temperature-sensitive Polymer with Reactive End Carboxylic Group and Its Application in the Fluoroimmunoassay

YANG Huang-Hao1, ZHU Qing-Zhi1, LI Dong-Hui2, DING Ma-Tai1, XU Jin-Guo1   

  1. Department of Chemistry, the Key Laboratory of Analytical Sciences of MOE, Cancer Rechearch Center, Xiamen University, Xiamen 361005, China
  • Received:2000-06-09 Online:2001-05-24 Published:2001-05-24

摘要: 合成了带有活性末端的寡聚N-异丙基丙烯酰胺(ONIPAAm),并考察了其温度敏感性质.以ONI-PAAm作为免疫分析的载体与鼠IgG偶联,以四磺基铁酞菁为标记物,以羊抗鼠IgG抗体为分析模型,建立了竞争型热敏相分离荧光免疫分析新系统.羊抗鼠IgG抗体在0~1500ng/mL范围内与体系相对荧光强度呈良好的线性关系,检测限为2ng/mL.

关键词: 寡聚N-异丙基丙烯酰胺, 温度敏感高聚物, 热敏相分离, 模拟酶, 荧光免疫分析

Abstract: Atemperature sensitive polymer containing a terminal carboxyl group was prepared by copolymerization of N-isopropylacrylamide with mercaptoacetic acid. This polymer was conjugated to the IgGwith EDCIand used to develop a novel polymer mimetic enzyme competitive immunoassay method for determination of anti-IgGwith iron-tetrasulfonatophthalocyanine as a labelling reagent to catalyze the reaction of p-hydroxyphenyl acetic acid (HPA) and hydrogen peroxide in alkaline medium. The calibration graph for anti-IgGwas linear over the range of 0-1 500 ng/mLwith a detection limit of 2.0 ng/mL.

Key words: Oligo N-isopropylacrylamide, Temperature sensitive polymer, Heat sensitive phase separation, Mimetic enzyme, Fluoroimmunoassay

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