Inoculation dose of Mycobacterium tuberculosis does not influence priming of T cell responses in lymph nodes.
J Immunol
; 190(9): 4707-16, 2013 May 01.
Article
em En
| MEDLINE
| ID: mdl-23547119
ABSTRACT
The effect of Mycobacterium tuberculosis inocula size on T cell priming in the lymph node and effector T cells in the lung remains controversial. In this study, we used a naive mouse model, without the transfer of transgenic T cells, in conjunction with mathematical model to test whether infection with higher aerosolized inocula would lead to increased priming of M. tuberculosis-specific T cells in the lung-draining lymph node. Our data do not support that inoculum size has a measurable influence on T cell priming in the lymph nodes but is associated with more cells overall in the lung, including T cells. To account for increased T cells in the lungs, we tested several possible mechanisms, and recruitment of T cells to the lungs was most influenced by inoculum dose. We also identified IL-10 as a possible mechanism to explain the lack of influence of inoculum dose on priming of T cells in the lymph node.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Ativação Linfocitária
/
Linfócitos T
/
Linfonodos
/
Mycobacterium tuberculosis
Tipo de estudo:
Prognostic_studies
Limite:
Animals
Idioma:
En
Revista:
J Immunol
Ano de publicação:
2013
Tipo de documento:
Article