Expression of foot-and-mouth disease virus epitopes in tobacco by a tobacco mosaic virus-based vector

文献类型： 外文期刊

第一作者： Wu, LG

作者： Wu, LG;Jiang, LB;Zhou, ZA;Fan, JH;Zhang, QQ;Zhu, HH;Han, Q;Xu, ZK

作者机构：

关键词： Recombinant tmv;Fmdv epitopes;Tobacco;Protective immunity;Nucleotide-sequence;Systemic production;Transgenic plants;Synthetic peptide;Foreign peptides;Protein;Vaccine;Surface;Fmdv

期刊名称：VACCINE （ 影响因子：3.641； 五年影响因子：3.816 ）

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收录情况： SCI

摘要： We expressed two immunogenic dominant epitopes of foot-and-mouth disease virus (FMDV) serotype O in tobacco plant using a vector based on a recombinant tobacco mosaic virus (TMV). The recombinant viruses TMVF11 and TMVF14 contained peptides of 11 and 14 amino acid residues, respectively, from FMDV VP 1 fused to the open reading frame of TMV coat protein (CP) gene between amino acid residues 154 and 155. TMVF11 and TMVF14 systemically infected tobacco plant and produced large quantities of stable progeny viral particles assembled with the modified CP subunits. Guinea pigs, mice and swine were used to test the protective effects of the recombinant viruses against FMDV infection. Most guinea pigs were protected against FMDV challenge after parenteral injection with TMVF11, TMVF14, or the mixture TMVF11/TMVF14, but not wtTMV. The TMVF11/TMVF14 mixture protected all animals when challenged with 150 guinea pig 50% infection dosage (GPID(50)) FMDV. Oral administration of the TMVF11/TMVF14 mixture (3 mg total) protected 3/8 guinea pigs against the same FMDV challenge. Most of the suckling mice parenterally injected with antiserum from guinea pigs immunized with the TMVF11/TMVF14 mixture, but not with wtTMV, were also protected against FMDV challenge with 10 suckling mouse 50% lethal dosage (SMLD50), indicating that antibodies produced in guinea pigs immunized with the TMVF11/TMVF14 mixture specifically neutralized FMDV. Western blot analysis indicated that antiserum from those guinea pigs reacted with the FMDV VP1 protein. The protective effect of TMVF11 was also demonstrated in swine, where preliminary tests showed that nine pigs immunized with TMVF11 in three experiments were protected against FMDV challenge with 20 minimal infecting dose (MID).

分类号： R194

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