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Updated: Aug 11, 2026

Protective Efficacy and Pulmonary Immune Response Following Subcutaneous and Intranasal BCG Administration in Mice
Published on: September 19, 2016
Protective responses against experimental Mycobacterium leprae infection in mice induced by recombinant Bacillus
N Ohara1, M Matsuoka, H Nomaguchi
1Nagasaki University School of Dentistry, Sakamoto 1-7-1, 852-8588, Nagasaki, Japan. oharan@net.nagasaki-u.ac.jp
The components of Ag85 (Ag85A, Ag85B, and Ag85C) are putative protective antigen candidates against mycobacterial infection. A recombinant Mycobacterium bovis Bacillus Calmette-Guérin (rBCG) over-producing Ag85A, Ag85B, and MPB51 (rBCG/BA51) was constructed. rBCG/BA51 could secrete these antigens at levels more than five times higher than parental BCG. Immunization of C57BL/6 and BALB/c mice with this rBCG reduced the multiplication of Mycobacterium leprae in the foot pads of both strains of mice. The inhibition by rBCG/BA51 was more evident than that by parental BCG.
The components of Ag85 (Ag85A, Ag85B, and Ag85C) are putative protective antigen candidates against mycobacterial infection. A recombinant Mycobacterium bovis Bacillus Calmette-Guérin (rBCG) over-producing Ag85A, Ag85B, and MPB51 (rBCG/BA51) was constructed. rBCG/BA51 could secrete these antigens at levels more than five times higher than parental BCG. Immunization of C57BL/6 and BALB/c mice with this rBCG reduced the multiplication of Mycobacterium leprae in the foot pads of both strains of mice. The inhibition by rBCG/BA51 was more evident than that by parental BCG.
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