Abstract
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.
Original language | English (US) |
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Pages (from-to) | 32-40 |
Number of pages | 9 |
Journal | Journal of Immunological Methods |
Volume | 381 |
Issue number | 1-2 |
DOIs | |
State | Published - Jul 31 2012 |
Keywords
- Human chorionic gonadotropin
- Immunomagnetic particle-based ELISA
- Magnetic particle-linked antibody immunoassay
- Pregnancy diagnosis
ASJC Scopus subject areas
- Immunology and Allergy
- Immunology