ACTA VETERINARIA ET ZOOTECHNICA SINICA

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Comparative Study on the Indirect ELISA Methods Based on the Different Recombinant Proteins of Rabies Virus

CHENG Chao-fei1#,GONG Miao-miao1#,TIAN Kang-le1,WANG Yong1,2,ZHAO Zhan-zhong1,SHI Li-jun1,LI Gang1*   

  1. (1. State Key Laboratory of Animal Nutrition, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, China; 2. College of Veterinary Medicine, China Agricultural University, Beijing 100193, China)
  • Received:2012-07-02 Online:2012-12-26 Published:2012-12-26

Abstract:

This study was designed to compare the indirect ELISA methods for detection of dog antibodies against rabies virus based on the recombinant matrix protein (M) and phosphoprotein (P). The M gene of rabies virus LEP-Flury strain was amplified by PCR and cloned into prokaryotic expression vector pGEX-6P-1. The resultant constructed pGEX-RV-M plasmid was transformed into BL21 (DE3) and protein expression was analyzed by SDS-PAGE and Western blot. The results of SDS-PAGE showed that the M protein was efficiently expressed, which were mainly soluble, and purified with the affinity chromatography. The results of Western blot indicated that the recombinant protein M showed good immunogenicity. The indirect ELISA method was established with the purified recombinant protein M, and a total of 95 serum samples were detected by the method and the indirect ELISA method based on the recombinant protein P respectively. The results showed that compared with the commercially available ELISA kit coating RV as antigen, the indirect ELISA method based on recombinant protein P had a higher coincidence rate, and it can replace the ELISA method based on RV.

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