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The Effect of Bovine IFN-α on the Immune Response in Guinea Pigs Vaccinatedwith DNA Vaccine of Foot-and-Mouth Disease Virus
引用本文:Guo HC,Liu ZX,Sun SQ,Leng QW,Li D,Liu XT,Xie QG. The Effect of Bovine IFN-α on the Immune Response in Guinea Pigs Vaccinatedwith DNA Vaccine of Foot-and-Mouth Disease Virus[J]. Acta biochimica et biophysica Sinica, 2004, 36(10): 701-706
作者姓名:Guo HC  Liu ZX  Sun SQ  Leng QW  Li D  Liu XT  Xie QG
作者单位:Hui-Chen GUO,Zai-Xin LIU*,Shi-Qi SUN,Qing-Wen LENG1,Dong LI,Xiang-Tao LIU,and Qing-Ge XIE* Key Laboratory of Animal Virology of Ministry of Agriculture,Lanzhou Veterinary Research Institute,Chinese Academy of Agricultural Sciences,Lanzhou 730046,China; College of Animal Science and Technology,Shihezi University,Shihezi 832003,China 1
基金项目:This work was supported by a grant from the Major State BasicResearch Development Program of China (No. G1999011903)
摘    要:Foot-and-mouth disease virus (FMDV) belongs to thegenus Aphthovirus of the family Picornavidae. The FMDVgenome is a copy of positive-sense, single-stranded RNA,which contains one large open reading frame (ORF). TheORF is translated into a polypeptide, which undergoesautoproteolytic cleavage to produce the structural and non-structural proteins and ultimately forms mature viral pro-teins [1,2]. FMD is caused by the FMDV, which is a highly conta-gious vesicular disease of cloven-hoofe…

关 键 词:foot-and-mouth disease virus (FMDV)  DNA vaccine  IFN-α  gene vaccination  

The effect of bovine IFN-alpha on the immune response in guinea pigs vaccinated with DNA vaccine of foot-and-mouth disease virus
Guo Hui-Chen,Liu Zai-Xin,Sun Shi-Qi,Leng Qing-Wen,Li Dong,Liu Xiang-Tao,Xie Qing-Ge. The effect of bovine IFN-alpha on the immune response in guinea pigs vaccinated with DNA vaccine of foot-and-mouth disease virus[J]. Acta biochimica et biophysica Sinica, 2004, 36(10): 701-706
Authors:Guo Hui-Chen  Liu Zai-Xin  Sun Shi-Qi  Leng Qing-Wen  Li Dong  Liu Xiang-Tao  Xie Qing-Ge
Affiliation:Key Laboratory of Animal Virology of Ministry of Agriculture, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou 730046, China.
Abstract:In this study, we constructed recombinant plasmid pcDNA3.1/P12X3C3D including P1, 2A, 3C, 3D and part of 2B gene of FMDV and pcDNA3.1/IFN containing the gene encoding bovine IFN-alpha. We inoculated the DNA vaccine pcDNA3.1/P12X3C3D with or without pcDNA3.1/IFN to evaluate the efficiency of this DNA vaccine and the immunogenicity of DNA vaccine enhanced by the co-delivery with pcDNA3.1/IFN. After two times of vaccination with DNA vaccine, all of guinea pigs were challenged with 103 ID50 FMDV type O. Anti-FMDV antibody levels were detected by ELISA and T lymphocyte proliferation response was tested by MTT assay. The result shows that guinea pigs inoculated by pcDNA3.1/P12X3C3D alone or with pcDNA3.1/IFN generated specific antibodies and induced an FMDV-specific T lymphocyte proliferation response. FMDV challenge tests showed that one in four guinea pigs immunized by pcDNA3.1/P12X3C3D with pcDNA3.1/IFN was protected from the FMDV serotype O infection. This result indicated that the efficiency of the DNA vaccine was enhanced by co-delivery with pcDNA3.1/IFN. However, the protection rate was considerably lower than that immunized with conventional FMD vaccine.
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