China Animal Husbandry and Veterinary Medicine ›› 2024, Vol. 51 ›› Issue (5): 2219-2227.doi: 10.16431/j.cnki.1671-7236.2024.05.042

• Basic Veterinary Medicine • Previous Articles     Next Articles

Application of Immunomagnetic Separation Technology in the Detection of Pathogenic Microorganisms

ZHANG Junhao1, KUANG Lei1, LEI Yifei1, ZHAO Tianrui1, XU Haojun1, CHEN Bin2, WANG Dan2, WEI Yangfei2, HONG Deng2, HU Changmin1   

  1. 1. College of Veterinary Medicine, Huazhong Agricultural University, Wuhan 430070, China;
    2. Wuhan Keqian Biological Co., Ltd., Wuhan 430070, China
  • Received:2023-10-20 Online:2024-05-05 Published:2024-04-28

Abstract: Immunomagnetic separation technology is a pre-treatment technology that separates the target adsorbed on the surface of the magnetic bead from the sample under the magnetic field.After the immune magnetic bead captures the target,the immunemagnetic bead-target complex is magnetically fixed on the tube wall,and the target can be obtained by elution of impurities.The enrichment effect of immunomagnetic separation technology is mainly affected by antibody specificity,magnetic bead diameter,magnetic bead addition amount,incubation time and sample pH,in which antibody specificity is the key to affect the enrichment effect of magnetic beads.Using the characteristics of immunomagnetic beads to adsorb antibodies,the coating step can be replaced in the enzyme-linked immunosorbent assay method,which can greatly reduce the detection time.As a pre-treatment method,immunomagnetic separation technology can improve the sensitivity and efficiency of the detection method when combined with other detection methods.In this review,the technical principle,general separation steps,common influencing factors and the application in enzyme-linked immunosorbent assay,immunochromatography,PCR,Real-time quantitative PCR,loop-mediated isothermal amplification reaction,flow cytometry,electrochemical sensors,liquid chromatography were described,so as to provide reference for the research and application of immunomagnetic separation technology.

Key words: immunomagnetic separation technology; sample preparation; pathogenic microorganism

CLC Number: