Laboratory Medicine ›› 2018, Vol. 33 ›› Issue (5): 447-451.DOI: 10.3969/j.issn.1673-8640.2018.05.017

• Orginal Article • Previous Articles     Next Articles

Establishment and validation of a time-resolved fluoroimmunoassay for transient receptor potential channel 5

LU Yangfan1, HUANG Biao2, MA Xin1   

  1. 1. School of Pharmaceutical Sciences,Jiangnan University,Wuxi 214000,Jiangsu,China
    2. Jiangsu Institute of Nuclear Medicine,Wuxi 214063,Jiangsu,China
  • Received:2017-05-15 Online:2018-05-20 Published:2018-05-30

Abstract:

Objective Transient receptor potential channel 5(TRPC5) can be as a marker of breast cancer drug resistance. To establish a method for the diagnosis of breast cancer in vitro drug resistance. Methods Time-resolved fluoroimmunoassay(TRFIA)was established for TRPC5. Anti-TRPC5 antibody was prepared by immunizing New Zealand white rabbits with TRPC5-keyhole limpet hemocyanin (KLH) as an immunogen. Mucin 1 (MUC1) antibody coated immunomagnetic beads to process samples. TRPC5 peptides, coated with 96-well plates as solid-phase antigens, competed with free TRPC5 antigen. Eu3+-goat anti-rabbit antibody was used as a tracer. Results The sensitivity was 1 ng/mL for TRPC5 TRFIA. The range was 5-500 ng/mL. The coefficient of variation(CV)was 5.5%. The mean recovery rate was 94.6%. The ED80,ED50 and ED20 of TRFIA were(4.68±0.13),(321.66±2.77) and (714.42±4.07)ng/mL,respectively. There was statistical significance for the results of chemotherapy-resistant patients and chemotherapy-tolerant patients(P<0.000 1). Conclusions TRPC5 TRFIA has a certain degree of differentiation between breast cancer chemotherapy resistance or not. It has clinical significance and is worth further study.

Key words: Transient receptor potential channel 5, Time-resolved fluoroimmunoassay, Breast cancer, Chemotherapy resistance

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