Use este identificador para citar ou linkar para este item: http://repositorio.bc.ufg.br/handle/ri/16566
Tipo do documento: Artigo
Título: Prime–boost with Mycobacterium smegmatis recombinant vaccine improves protection in mice infected with Mycobacterium tuberculosis
Autor: Junqueira-Kipnis, Ana Paula
Oliveira, Fábio Muniz de
Trentini, Monalisa Martins
Tiwari, Sangeeta
Bing, Chen
Resende, Danilo Pires
Silva, Bruna Daniella de Souza
Mei, Chen
Tesfa, Lydia
Jacobs Jr, William R.
Kipnis, André
Abstract: The development of a new vaccine as a substitute for Bacillus Calmette–Guerin or to improve its efficacy is one of the many World Health Organization goals to control tuberculosis. Mycobacterial vectors have been used successfully in the development of vaccines against tuberculosis. To enhance the potential utility of Mycobacterium smegmatis as a vaccine, it was transformed with a recombinant plasmid containing the partial sequences of the genes Ag85c, MPT51, and HspX (CMX) from M. tuberculosis. The newly generated recombinant strain mc2-CMX was tested in a murine model of infection. The recombinant vaccine induced specific IgG1 or IgG2a responses to CMX. CD4+ and CD8+ T cells from the lungs and spleen responded ex vivo to CMX, producing IFN-c, IL17, TNF-a, and IL2. The vaccine thus induced a significant immune response in mice. Mice vaccinated with mc2-CMX and challenged with M. tuberculosis showed better protection than mice immunized with wild-type M. smegmatis or BCG. To increase the safety and immunogenicity of the CMX antigens, we used a recombinant strain of M. smegmatis, IKE (immune killing evasion), to express CMX. The recombinant vaccine IKE-CMX induced a better protective response than mc2-CMX. The data presented here suggest that the expression of CMX antigens improves the immune response and the protection induced in mice when M. smegmatis is used as vaccine against tuberculosis.
País: Estados unidos
Unidade acadêmica: Instituto de Patologia Tropical e Saúde Pública - IPTSP (RG)
Citação: JUNQUEIRA-KIPNIS, Ana Paula; OLIVEIRA, Fábio Muniz de; TRENTINI, Monalisa Martins; TIWARI, Sangeeta; BING, Chen; RESENDE, Danilo Pires; SILVA, Bruna D. S.; MEI, Cheni; TESFA, Lydia; JACOBS JR. William R.; KIPNIS, André. Prime–boost with Mycobacterium smegmatis recombinant vaccine improves protection in mice infected with Mycobacterium tuberculosis. Plos One, San Francisco, v. 8, n.11, p. e78639, 2013.
Tipo de acesso: Acesso Aberto
Identificador do documento: 10.1371/journal.pone.0078639
Identificador do documento: 10.1371/journal.pone.0078639
URI: http://repositorio.bc.ufg.br/handle/ri/16566
Data de publicação: 8-Nov-2013
Aparece nas coleções:IPTSP - Artigos publicados em periódicos

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