title: Inhibition of the multiplication of Mycobacterium leprae by vaccination with a recombinant M. bovis BCG strain that secretes major membrane protein II in mice.
abstract: The ability of a recombinant Mycobacterium bovis BCG strain that secretes major membrane protein II (MMP-II) of Mycobacterium leprae (BCG-SM) to confer protection against leprosy was evaluated by use of a mouse footpad model. C57BL/6J mice intradermally inoculated with BCG-SM produced splenic T cells which secreted significant amounts of gamma interferon (IFN-gamma) in response to either the recombinant MMP-II, the M. leprae-derived membrane fraction, or the BCG-derived cytosolic fraction in vitro more efficiently than those from the mice infected with the vector control BCG strain (BCG-pMV, a BCG strain containing pMV-261). A higher percentage of CD8(+) T cells obtained from BCG-SM-inoculated mice than those obtained from BCG-pMV-inoculated mice produced intracellular IFN-gamma on restimulation with the M. leprae antigens. BCG-SM inhibited the multiplication of M. leprae in the footpads of C57BL/6J mice more efficiently than BCG-pMV. These results indicate that a BCG strain that secretes MMP-II could be a better vaccine candidate for leprosy.
authors.affiliation: Department of Mycobacteriology, Leprosy Research Center, National Institute of Infectious Diseases, Higashimurayama, Tokyo 189-0002, Japan.
authors.forename: Y
authors.initials: Y
authors.lastname: Maeda
authors.forename: T
authors.initials: T
authors.lastname: Tamura
authors.forename: M
authors.initials: M
authors.lastname: Matsuoka
authors.forename: M
authors.initials: M
authors.lastname: Makino
mesh_terms: D000818:Animals; D000942:Antigens, Bacterial / Q000235:genetics; D001500:BCG Vaccine / Q000235:genetics* / Q000276:immunology*; D001428:Bacterial Vaccines / Q000235:genetics / Q000276:immunology; D006801:Humans; D007918:Leprosy / Q000276:immunology / Q000517:prevention & control; D008565:Membrane Proteins / Q000235:genetics / Q000276:immunology*; D051379:Mice; D008810:Mice, Inbred C57BL; D009166:Mycobacterium leprae / Q000235:genetics / Q000254:growth & development / Q000276:immunology* / Q000472:pathogenicity; D013601:T-Lymphocytes / Q000276:immunology; D014614:Vaccines, Synthetic / Q000235:genetics / Q000276:immunology
chemical_list: D000942:Antigens, Bacterial; D001500:BCG Vaccine; D001428:Bacterial Vaccines; D008565:Membrane Proteins; D014614:Vaccines, Synthetic; C500901:major membrane protein II, Mycobacterium leprae
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