title: Induction of a protective response with an IgA monoclonal antibody against Mycobacterium tuberculosis 16kDa protein in a model of progressive pulmonary infection.
abstract: Mycobacterium tuberculosis is a facultative intracellular pathogen for which cell-mediated immunity is considered the major component of the immune response. For many decades, the prevailing scientific view has been the antibodies have little or no role in modifying the course of M. tuberculosis infection. In recent years, several studies have challenged this dogma, and there is a body of evidence that supports a role of antibodies against M. tuberculosis. In the present work, we evaluated the protective activity of two monoclonal antibodies (TBA61 and TBA84). Here, we chose the intratracheal model of pulmonary infection to evaluate bacterial load and morphometric and histological changes in the lungs of treated mice. Data obtained revealed the reduction of bacterial load and milder morphometric and histopathological changes in mice treated with TBA61 at 21 days post-infection with M. tuberculosis H37Rv compared to those treated with TBA84 and control mice. These results allow continuing exploring the potential use of monoclonal antibodies as prophylactic and therapeutic agents against intracellular pathogens such as M. tuberculosis.
authors.affiliation: Finlay Institute, La Lisa, Havana, Cuba. ylopez@finlay.edu.cu
authors.forename: Yamilé
authors.initials: Y
authors.lastname: López
authors.forename: Daniel
authors.initials: D
authors.lastname: Yero
authors.forename: Gustavo
authors.initials: G
authors.lastname: Falero-Diaz
authors.forename: Nesty
authors.initials: N
authors.lastname: Olivares
authors.forename: María E
authors.initials: ME
authors.lastname: Sarmiento
authors.forename: Sergio
authors.initials: S
authors.lastname: Sifontes
authors.forename: Rosa L
authors.initials: RL
authors.lastname: Solis
authors.forename: Jorge A
authors.initials: JA
authors.lastname: Barrios
authors.forename: Diana
authors.initials: D
authors.lastname: Aguilar
authors.forename: Rogelio
authors.initials: R
authors.lastname: Hernández-Pando
authors.forename: Armando
authors.initials: A
authors.lastname: Acosta
mesh_terms: D000818:Animals; D000907:Antibodies, Bacterial / Q000008:administration & dosage / Q000276:immunology*; D000911:Antibodies, Monoclonal / Q000008:administration & dosage / Q000276:immunology*; D015169:Colony Count, Microbial; D005260:Female; D007070:Immunoglobulin A / Q000008:administration & dosage / Q000276:immunology*; D008168:Lung / Q000382:microbiology / Q000473:pathology; D051379:Mice; D008807:Mice, Inbred BALB C; D009169:Mycobacterium tuberculosis / Q000276:immunology* / Q000472:pathogenicity; D014397:Tuberculosis, Pulmonary / Q000276:immunology*
chemical_list: D000907:Antibodies, Bacterial; D000911:Antibodies, Monoclonal; D007070:Immunoglobulin A