›› 2013, Vol. 40 ›› Issue (12): 20-26.

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Purification of the Recombinant Structural Protein of Foot and Mouth Disease Virus Serotype O in Swine and Establishment of the Indirect ELISA

SONG Ni1, WANG Feng-xue1, SUN Na1, SHI Xin-chuan2, WEN Yong-jun1, WU Hua1,2   

  1. 1. State Key Laboratory of Special Economic Animal Molecular Biology, Institute of Special Economic Animal and Plant Sciences, Chinese Academy of Agricultural Sciences, Changchun 130112, China;
    2. Sinovet (Beijing) Biotechnology Co., Ltd., Beijing 100085, China
  • Received:2013-05-07 Online:2013-12-20 Published:2014-02-11

Abstract: The complete genes encoding the structural protein of foot and mouth disease virus (FMDV)(VP0,VP1 and VP3) were subcloned into expression vector SUMO,resulting in the fusion expression plasmid SUMO-VP0,SUMO-VP1 and SUMO-VP3,and then transformed into E.coli BL21(DE3) and induced by IPTG,the fusion proteins were expressed at high level.Western blotting was performed to confirm that the expressed fusion proteins could specifically react with antiserum against FMDV.The expressed fusion proteins were purified by affinity chromatography. Based on the fusion protein further purification,novel indirect ELISA (SUMO-VP0-ELISA,SUMO-VP1-ELISA,SUMO-VP3-ELISA) were developed to detect FMDV antibodies in swine by detecting 200 serum samples,indicating that the indirect SUMO-VP0-ELISA,SUMO-VP1-ELISA,SUMO-VP3-ELISA were specific and sensitive.

Key words: foot and mouth disease virus serotype O in swine; recombinant structural protein; SUMO; purification; indirect ELISA

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