波谱学杂志 ›› 2000, Vol. 17 ›› Issue (5): 401-406.

• 研究论文 • 上一篇    下一篇

含硒抗体酶清除羟自由基作用的ESR研究

董凤霞1, 郑莹光1, 綦丹华2, 罗贵民2, 杨同书3   

  1. 1. 吉林大学分析测试中心, 长春 130023;
    2. 吉林大学分子酶学工程教育部重点实验室, 长春 130023;
    3. 白求恩医科大学地方病研究所, 长春 130021
  • 收稿日期:2000-06-28 修回日期:2000-08-16 出版日期:2000-10-05 发布日期:2018-01-11
  • 作者简介:董凤霞(1960-),女,工程师
  • 基金资助:
    国家自然科学基金资助项目

ESR STUDIES ON ABILITIES OF SELENIUM CONTAINING ABZYMES SCAVENGED OH·

DONG Feng-xia1, ZHENG Ying-guang1, QI Dan-hua2, LUO Gui-min2, YANG Tong-shu3   

  1. 1. Analysis And Test Center, Jilin University, Changchun 130023;
    2. Key Lab of Molecular Enzymology and Enginering of Educational Ministry, Jilin University, Changchun 130023;
    3. Institute of Endemic Diseases, Bethune M edical University, Changchun 130021
  • Received:2000-06-28 Revised:2000-08-16 Online:2000-10-05 Published:2018-01-11

摘要: m1c8和m4G3是自制的含硒抗体酶,它具有与谷胱甘肽过氧化物酶相可比拟的生物催化活性,本文用自旋俘获方法研究这两种含硒抗体酶在含铁的黄嘌呤氧化酶/次黄嘌呤自由基诱生体系中对羟自由基的清除作用,发现两种抗体酶清除羟自由基的能力均优于天然谷胱甘肽过氧化物酶,其中m1c8清除HO·自由基的能力最强.

关键词: 抗体酶, HO·自由基, 自旋俘获, ESR

Abstract: m1c8 and m4G3 are selenium-contaning abzymes with glutathione peroxidase activity and the two abzymes could scavenge free radicals.Their abilities to scavenge OH· were examined in iron containing Xanthine oxidase/hypoxathine system by using spin trapping method. It was found that the abilities of these two Se-abzymes to scavenge OH· did surpass the level of native glutathione peroxidase. m1c8 was the best one.

Key words: Se-abzyme, HO·radical, ESR, Spin-trapping

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