高等学校化学学报 ›› 2011, Vol. 32 ›› Issue (5): 1070.

• 研究论文 • 上一篇    下一篇

负载高密度乙肝检测探针磁珠的制备及性能

张宝亮, 张秋禹, 张和鹏, 刘瑜, 范新龙, 许海龙   

  1. 西北工业大学理学院化学系, 西安 710129
  • 收稿日期:2010-05-28 修回日期:2010-08-09 出版日期:2011-05-10 发布日期:2011-04-11
  • 通讯作者: 张秋禹 E-mail:qyzhang2008@126.com
  • 基金资助:

    国家自然科学基金(批准号: 50773063)、国家“九七三”计划项目(批准号: 2010CB635111)、西北工业大学基础研究基金(批准号: G9KY1020)和西北工业大学研究生创业种子基金(批准号: Z2011009)资助.

Preparation and Properties of High-Density HBsAg-Conjugated Magnetic Probes

ZHANG Bao-Liang, ZHANG Qiu-Yu*, ZHANG He-Peng, LIU Yu, FAN Xin-Long, XU Hai-Long   

  1. Department of Chemistry, College of Science, Northwestern Polytechnical University, Xi′an 710129, China
  • Received:2010-05-28 Revised:2010-08-09 Online:2011-05-10 Published:2011-04-11
  • Contact: ZHANG QiuYu E-mail:qyzhang2008@126.com
  • Supported by:

    国家自然科学基金(批准号: 50773063)、国家“九七三”计划项目(批准号: 2010CB635111)、西北工业大学基础研究基金(批准号: G9KY1020)和西北工业大学研究生创业种子基金(批准号: Z2011009)资助.

摘要: 本文介绍了一种负载高密度乙肝检测探针磁珠的制备技术,并对其在乙肝检测中的应用性能进行了研究,开辟了一种乙肝检测的新方法。首先通过化学键连接的方法制备出表面偶联乙肝抗体的磁性复合微球(亦称“乙肝抗原检测免疫磁珠”),之后将其用于乙肝检测研究表现出了较好的效果,为了进一步提高其检测准确性及灵敏性,对乙肝免疫磁珠的制备过程进行了优化,包括磁珠的胺化工艺及抗体的偶联工艺。通过优化得到氨基磁性复合微球的氨基含量为2.71 mmol/g、单位磁珠抗体偶联量为108.36 ug/mg、偶联效率为77.40%的负载高密度乙肝检测探针的磁珠。并在此过程中采用类“双抗原夹心酶联免疫法”对乙肝抗体的活性及优化效果进行了检测。通过性能检测比较,磁珠法检测灵敏度高于普通酶联免疫法。

关键词: 免疫磁珠, 表面功能化, 乙肝检测, 胺化

Abstract: The preparation of magnetic beads loaded with high-density Hepatitis B Surface Antigen (HBsAg) detection probes was introduced in this paper, and the properties of the beads for HBsAg detection were also studied. The immunomagnetic beads coupled with HBsAb were firstly prepared by chemical bond. Then, immunomagnetic beads were used for detecting HBsAg and were obtained a favorable effect. In order to improve the accuracy and sensitivity of detection, the preparation process of immunomagnetic beads was optimized, including amination and coupling process. Through the optimization, the amino content of magnetic beads was 2.71mmol/g, unit magnetic beads bonded 108.36 ug/mg antibodies and the coupling efficiency was 77.40%. The activity of HBsAb on magnetic beads was detected by the method similar to Enzyme-Linked Immunosorbent Assay (ELISA). Compared with common ELISA technology, magnetic beads loaded with high-density HBsAb have higher sensitivity.

Key words: immunomagnetic beads, surface functionalization, HBsAg detection, amination

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