Chinese Journal of Applied Chemistry ›› 2024, Vol. 41 ›› Issue (12): 1760-1769.DOI: 10.19894/j.issn.1000-0518.240055

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Rare Earth Fluorescent Probes for Rapid Detection of Hepatitis B Surface Antigen

Rui-Qi ZHANG1, Yu CHANG2, Zuo-Jia LIU2, Xue-Song LI1(), Li-Hua PAN2()   

  1. 1.Ministry of Education Key Laboratory of Advanced Structural Materials,College of Materials Science and Engineering,Changchun University of Technology,Changchun 130012,China
    2.Changchun Institute of Applied Chemistry,Chinese Academy of Sciences,Changchun 130022,China
  • Received:2024-02-22 Accepted:2024-10-16 Published:2024-12-01 Online:2025-01-02
  • Contact: Xue-Song LI,Li-Hua PAN
  • About author:lihuap@ciac.ac.cn
    lixuesong@ccut.edu.cn
  • Supported by:
    Xinjiang Uygur Autonomous Region Science and Technology Department Key Research and Development Project(2021B03003);Jilin Provincial Science and Technology Department Key Research and Development Project(20224094094XY);Jilin Provincial Natural Science Foundation Upper-level Project(20230101330JC)

Abstract:

In this study, a self-synthesized rare-earth chelator 4,4′-Bis(1″,1″,1″,2″,2″,3″,3″-7-fluoro-4″,6″-hexanedione-6″-yl)chlorosulfonated terphenyl (BHHCT) was used to prepare hepatitis B surface antibody markers, and a time-resolved fluorescence immunoassay for the rapid detection of hepatitis B surface antigen (HBsAg) was developed by applying lateral-flow immunochromatographic test strips and an accompanying time-resolved fluorescence detection system. The linear range was 0.2~500 ng/mL, the detection limit was 0.16 ng/mL, and the linear regression coefficient of determination (R2) was 0.9996. The intra-batch coefficient of variation was less than 5%, the inter-batch coefficient of variation was less than 8%, and the recoveries of the samples ranged from 94.3% to 107.8%. The method has the advantages of precision, rapidity, specificity and no need for specialized personnel to operate, which can meet the requirement of immediate detection of hepatitis B surface antigen.

Key words: Time-resolved fluorescence immunoassay, Lateral flow immunochromatography strip, Hepatitis B surface antigen, Point of care testing

CLC Number: