Magnetic particle-linked anti hCG β antibody for immunoassay of human chorionic gonadotropin (hCG), potential application to early pregnancy diagnosis.

Hsiao-Ting Kuo, Jay Z Yeh, Chi-Ming Jiang, Ming-Chang Wu

Department of Food Science, National Pingtung University of Science and Technology, 1 Hseuh Fu Road, Neipei, Pingtung 91201 Taiwan.

Journal of immunological methods 2012 Jul 31

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The objective of this study was to develop a magnetic particle-linked monoclonal antibody to hCG β for immunosorbent assay of human chorionic gonadotropin (hCG) with improved detection sensitivity. Monoclonal antibody against hCG β was found to be optimally cross-linked to the superparamagnetic particles (SPIO) using EDC and NHS as cross-linking reagents. This superparamagnetic particle-linked monoclonal antibody was able to concentrate hCG from a tested solution for further ELISA assay using horse radish peroxidase-labeled monoclonal antibody against hCG β. This hybrid technique had greatly decreased the detection limit to 0.1 mIU/mL, making an early detection of pregnancy possible. With an improved sensitivity and simple operation, the magnetic particle-linked anti hCG β antibody for immunoassay of human chorionic gonadotropin (hCG) has a great potential to supersede the traditional ELISA for pregnancy diagnosis. Copyright © 2012 Elsevier B.V. All rights reserved.

Citation

Hsiao-Ting Kuo, Jay Z Yeh, Chi-Ming Jiang, Ming-Chang Wu. Magnetic particle-linked anti hCG β antibody for immunoassay of human chorionic gonadotropin (hCG), potential application to early pregnancy diagnosis. Journal of immunological methods. 2012 Jul 31;381(1-2):32-40