Synthetic peptide vaccination in cattle: induction of strong cellular immune responses against peptides derived from the Mycobacterium bovis antigen Rv3019c.
Fully synthetic peptide vaccines possess attractive cost and safety attributes. However, peptide vaccines that induce cell-mediated immunity require both selection of appropriate peptides and the development of adjuvant formulations supporting the induction of cellular immunity. An adjuvant formulation composed of emulsigen and the synthetic CpG motif containing ODN2007 was tested in cattle for its ability to induce cellular immunity after peptide vaccination, and compared to Rv3019c DNA vaccination. Peptides from the protective Mycobacterium bovis antigen Rv3019c were included into the vaccine on the basis of their frequent and strong recognition by T cells from M. bovis infected or BCG vaccinated cattle. Following peptide vaccination, strong IFN-gamma and proliferative T cell responses were observed. Proliferative, but no significant IFN-gamma responses were induced by DNA vaccination. Peptide vaccination boosted responses primed by DNA vaccination. In conclusion, emulsigen and CpG motif containing ODN constitute a promising adjuvant formulation to deliver peptides to veterinary species.
Vordermeier
H Martin
HM
Veterinary Labortories Agency-Weybridge, TB Research Group, New Haw, Addlestone, Surrey KT15 3NB, UK. m.vordermeier@vla.defra.gsi.gov.uk
Pontarollo
Reno
R
Karvonen
Brenda
B
Cockle
Paul
P
Hecker
Rolf
R
Singh
Mahavir
M
Babiuk
Lorne A
LA
Hewinson
R Glyn
RG
van Drunen Littel-van Den Hurk
Sylvia
S
D000818:Animals; D000942:Antigens, Bacterial / Q000008:administration & dosage / Q000276:immunology*; D001500:BCG Vaccine / Q000008:administration & dosage / Q000276:immunology / Q000494:pharmacology*; D002417:Cattle; D006801:Humans; D007111:Immunity, Cellular / Q000187:drug effects* / Q000276:immunology; D009163:Mycobacterium bovis / Q000276:immunology; D009838:Oligodeoxyribonucleotides / Q000494:pharmacology*; D010446:Peptide Fragments / Q000276:immunology; D032581:Tuberculosis Vaccines / Q000008:administration & dosage / Q000276:immunology*; D014380:Tuberculosis, Bovine / Q000517:prevention & control*
D000942:Antigens, Bacterial; D001500:BCG Vaccine; D009838:Oligodeoxyribonucleotides; D010446:Peptide Fragments; D032581:Tuberculosis Vaccines