Acta Agriculturae Zhejiangensis ›› 2022, Vol. 34 ›› Issue (10): 2138-2148.DOI: 10.3969/j.issn.1004-1524.2022.10.08

• Animal Science • Previous Articles     Next Articles

Preparation and immunoprotection of ORF57 subunit vaccine of Cyprinid herpesvirus 3

LIU Shuya1(), HE Wenlu2, TAO Yu1, HUANG Shuanghui1, REN Yongqiang1, GENG Yi1, HUANG Xiaoli3, CHEN Defang3, OUYANG Ping1,*()   

  1. 1. College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, China
    2. China Portugal International Cooperation Center of Traditional Chinese Medicine, Affiliated Hospital of Traditional Chinese Medicine of Southwest Medical University, Luzhou 646099, Sichuan, China
    3. College of Animal Science, Sichuan Agricultural University, Chengdu 611130, China
  • Received:2021-04-20 Online:2022-10-25 Published:2022-10-26
  • Contact: OUYANG Ping

Abstract:

The aim of this study was to study the possibility of ORF57, an important capsule protein of Cyprinid herpesvirus 3, as a vaccine candidate antigen. According to the published genome sequence of Cyprinid herpesvirus 3 (GenBank number: DQ657948.1), specific primers were designed to amplify and clone the ORF57 sequence, and bioinformatics analysis was performed. The recombinant prokaryotic expression vector pET-32a(+) -CyHV-3-ORF57 was constructed, and the recombinant protein ORF57 was expressed by E. coli in vitro. In addition, the immune protection of ORF57 subunit vaccine was studied. The survival rate of CyHV-3 was 75% after 4 weeks of immunization, and the survival rate of ORF57 subunit vaccine group was significantly higher than that of PBS and PET-32a (+) groups. The results showed that the recombinant ORF57 subunit vaccine had strong immune protection, which provided an experimental basis for the clinical application of immunology and the development of CyHV-3 vaccine.

Key words: Cyprinid herpesvirus 3, recombinant protein, subunit vaccine, immune protection

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