ACTA VETERINARIA ET ZOOTECHNICA SINICA ›› 2014, Vol. 45 ›› Issue (7): 1142-1147.doi: 10.11843/j.issn.0366-6964.2014.07.016

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Immunogenicity of DNA Vaccine Expressing H Gene of Peste des Petits Ruminants Virus in Mice

LI Wen-chao1,2, SUI Xiu-kun1, JIN Hong-yan1, LIANG Lin1, WANG Wen-quan2, LI Gang1*   

  1. (1.State Key Laboratory of Animal Nutrition,Beijing Scientific Observation and Experimental Station for Veterinary Drug and Veterinary Biotechnology of Ministry of Agriculture,Institute of Animal Science,Chinese Academy of Agricultural Sciences, Beijing 100193, China; 2.Beijing Ceva Huadu Biological Co., Ltd, Beijing 102600, China)
  • Received:2013-12-27 Online:2014-07-23 Published:2014-07-23

Abstract:

The purpose of the study was to construct DNA vaccines expressing Peste des petits ruminants virus (PPRV) H protein,and to evaluate the immunogenicity in mice.The H gene of PPRV was amplified by RT-PCR,and was cloned into the eukaryotic expression vector pcDNA3.1(+)to construct recombinant plasmids pcDNA3.1-H.The H protein transiently expressed in chicken embryo fibroblast cells (CEF) was detected by indirect immunofluorescence and Western blot.Mice were inoculated with recombinant plasmids via intramuscular injection in back legs,the immunogenicity of the vaccine was evaluated by indirect ELISA,lymphocyte proliferation assay and cytokines detection.The results showed that recombinant eukaryotic expression plasmids pcDNA3.1-H was successfully constructed and could express H protein in CEF cell.High specific antibodies were induced by the vaccine.The antigen specific lymphoproliferative test stimulation index of mice immunized with the DNA vaccine was significantly enhanced compared with the control immunized group,and high level of IFN-γ and IL-4 were secreted by the immunized mice.Hence the DNA vaccine could induce humoral and cellular immune in mice and could be promising for PPR control.

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