TY - JOUR T1 - Immunogenicity and protective efficacy of DNA vaccines encoding MAP0586c and MAP4308c of Mycobacterium avium subsp. paratuberculosis secretome. JF - Vaccine Y1 - 2008 A1 - Virginie Roupie A1 - Leroy, Baptiste A1 - Rosseels, Valérie A1 - Piersoel, Virginie A1 - Noël-Georis, Isabelle A1 - Marta Romano A1 - Govaerts, Marc A1 - Letesson, Jean-Jacques A1 - Wattiez, Ruddy A1 - Huygen, Kris KW - Animals KW - Antibodies, Bacterial KW - Bacterial Proteins KW - Cytokines KW - Epitope Mapping KW - Epitopes, T-Lymphocyte KW - Female KW - Humans KW - Immunization, Secondary KW - Immunoglobulin G KW - mice KW - Mice, Inbred BALB C KW - Mice, Inbred C57BL KW - Mycobacterium avium subsp. paratuberculosis KW - Paratuberculosis KW - Plasmids KW - T-Lymphocytes KW - Th1 Cells KW - Vaccines, DNA AB -

Mycobacterium avium subsp. paratuberculosis (MAP), the etiological agent of chronic enteritis of the small intestine in domestic and wild ruminants, causes substantial losses to livestock industry. Control of this disease is seriously hampered by the lack of adequate diagnostic tools, vaccines and therapies. In this study, we have evaluated the vaccine potential of two MAP proteins, i.e. MAP0586c and MAP4308c, previously identified by postgenomic and immunoproteomic analysis of MAP secretome as novel serodiagnostic antigens. Immunizations of BALB/c and C57BL/6 mice with plasmid DNA encoding MAP0586c and MAP4308c induced strong Th1 type immune responses to both antigens, whereas antibody responses were only induced upon immunization with DNA encoding MAP4308c. Homologous boosting of DNA vaccinated mice with recombinant protein resulted in strong antibody responses against both proteins. Using synthetic overlapping peptides, immunodominant H-2(d) and H-2(b) restricted Th1 T cell epitopes were identified. Finally, MAP infected mice generated strong MAP0586c-specific T cell responses and MAP0586c DNA vaccination could protect BALB/c but not C57BL/6 mice against MAP challenge mice to the same extent as the Mycobacterium bovis BCG vaccine, indicating that this putative transglycosylase is an interesting vaccine candidate that warrants further investigation.

VL - 26 CP - 37 U1 - http://www.ncbi.nlm.nih.gov/pubmed/18652866?dopt=Abstract M3 - 10.1016/j.vaccine.2008.07.009 ER -