ACTA AGRICULTURAE BOREALI-SINICA ›› 2015, Vol. 30 ›› Issue (1): 142-149. doi: 10.7668/hbnxb.2015.01.023

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Study on the Expression and Immunogenicity of Chimeric Rabbit Hemorrhagic Disease Virus-like Particles as Carriers for B-cell Epitope of Foot-and-mouth Disease Virus

SHENG Rong1,2, SONG Yan-hua1, HU Bo1, FAN Zhi-yu1, JIANG Ping2, XUE Jia-bin1, WEI Hou-jun1, WANG Fang1   

  1. 1. Institute of Veterinary Medicine, Jiangsu Academy of Agricultural Sciences, Key Laboratory of Veterinary Biological Engineering and Technology, Ministry of Agriculture, National Center for Engineering Research of Veterinary Bio-products, Nanjing 210014, China;
    2. College of Veterinary Medicine of Nanjing Agricultural University, Nanjing 210095, China
  • Received:2014-11-08 Published:2015-02-28

Abstract: To explore the capacity of antigen presentation of the foreign B-cell epitopes by virus-like particles (VLPs) of rabbit hemorrhagic (RHDV), the VLPs of RHDV displaying B-cell epitope of foot-and-mouth disease virus (FMDV) were constructed.The sequences of a FMDV B-cell epitope were fused to the N-terminal, C-terminal and inserted between 306th and 307th aa of capsid protein of RHDV.The fused genes were cloned into the donor vector pFastBacTMHTA and three recombinant baculoviruses (rAc-VP60-2F, rAc-VP60-306F, rAc-VP60-578F) were constructed using Bac-to-Bac baculovirus expression system.These recombinant proteins were expressed effectively in insect cells as confirmed by IFA, SDS-PAGE and Western Blot.The immunogenicity of all chimeric VLPs was examined in mice.The results indicated the recombinant proteins could react with both anti-VP60 monoclonal antibody and anti-FMDV polyclonal antibody.And all recombinant proteins could self-assemble into VLPs by electron microscopy analysis.Furthermore, all chimeric VLPs were able to induce strong VP60-specific antibodies responses.In addition, there were significant differences of peptide-specific IgG antibodies induced by chimeric proteins, compared to that of VP60 group.The significant levels of serum antibodies against B-cell epitopes of FMDV demonstrated the feasibility of RHDV-VLP serving as a presentation carrier for foreign B-cell epitopes.

Key words: RHDV, Virus-like particles, FMDV, B-cell epitope, Vector

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Cite this article

SHENG Rong, SONG Yan-hua, HU Bo, FAN Zhi-yu, JIANG Ping, XUE Jia-bin, WEI Hou-jun, WANG Fang. Study on the Expression and Immunogenicity of Chimeric Rabbit Hemorrhagic Disease Virus-like Particles as Carriers for B-cell Epitope of Foot-and-mouth Disease Virus[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2015, 30(1): 142-149. doi: 10.7668/hbnxb.2015.01.023.

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