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Pseudorabies virus glycoprotein B can be used to carry foot and mouth disease antigens in DNA vaccination of pigs.

Abstract : To evaluate the feasibility of using pseudorabies virus (PrV) glycoprotein B (gB) as a carrier of foot and mouth disease virus (FMDV) antigens in DNA immunization, FMDV B- and T-cell epitopes were inserted either between the two B-cell epitopes of the N-term subunit of PrV-gB (BT-PrV-gB-N-term construct) or within the B-cell epitope of the C-term subunit of PrV-gB (BT-PrV-gB-C-term construct). Two animal experiments were performed, each with three injections of plasmids 2 weeks apart, followed by a booster inoculation of peptides corresponding to the FMDV epitopes. Control groups of pigs were injected with plasmids encoding either PrV-gB or FMDV-BT, or with empty-pcDNA3. The results of both assays were combined. Significant titers of FMDV neutralizing antibodies were detected after the peptides boost in groups injected with the BT-PrV-gB-C-term construct. Insignificant amounts were detected in groups injected with the BT-PrV-gB-N-term and FMDV-BT constructs. PBMCs from the BT-PrV-gB-N-term groups, isolated after the peptide boost injection, produced IFN-gamma and IL-4 mRNAs in vitro when stimulated with FMDV peptides. This was not observed with the other groups. These results imply that PrV-gB can be used to carry FMDV antigens in a DNA vaccine.
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Submitted on : Wednesday, July 15, 2009 - 5:37:37 PM
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Daniel Dory, Michelle Rémond, Véronique Béven, Roland Cariolet, Marija Backovic, et al.. Pseudorabies virus glycoprotein B can be used to carry foot and mouth disease antigens in DNA vaccination of pigs.. Antiviral Research, Elsevier Masson, 2009, 81 (3), pp.217-25. ⟨10.1016/j.antiviral.2008.11.005⟩. ⟨hal-00404242⟩



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