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Initiation of the adaptive immune response to Mycobacterium tuberculosis depends on antigen production in the local lymph node, not the lungs
The onset of the adaptive immune response to Mycobacterium tuberculosis is delayed compared with that of other infections or immunization, and allows the bacterial population in the lungs to expand markedly during the preimmune phase of infection. We used adoptive transfer of M. tuberculosis Ag85B-s...
Autores principales: | , , , , , , |
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Formato: | Texto |
Lenguaje: | English |
Publicado: |
The Rockefeller University Press
2008
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2234384/ https://www.ncbi.nlm.nih.gov/pubmed/18158321 http://dx.doi.org/10.1084/jem.20071367 |
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author | Wolf, Andrea J. Desvignes, Ludovic Linas, Beth Banaiee, Niaz Tamura, Toshiki Takatsu, Kiyoshi Ernst, Joel D. |
author_facet | Wolf, Andrea J. Desvignes, Ludovic Linas, Beth Banaiee, Niaz Tamura, Toshiki Takatsu, Kiyoshi Ernst, Joel D. |
author_sort | Wolf, Andrea J. |
collection | PubMed |
description | The onset of the adaptive immune response to Mycobacterium tuberculosis is delayed compared with that of other infections or immunization, and allows the bacterial population in the lungs to expand markedly during the preimmune phase of infection. We used adoptive transfer of M. tuberculosis Ag85B-specific CD4(+) T cells to determine that the delayed adaptive response is caused by a delay in initial activation of CD4(+) T cells, which occurs earliest in the local lung-draining mediastinal lymph node. We also found that initial activation of Ag85B-specific T cells depends on production of antigen by bacteria in the lymph node, despite the presence of 100-fold more bacteria in the lungs. Although dendritic cells have been found to transport M. tuberculosis from the lungs to the local lymph node, airway administration of LPS did not accelerate transport of bacteria to the lymph node and did not accelerate activation of Ag85B-specific T cells. These results indicate that delayed initial activation of CD4(+) T cells in tuberculosis is caused by the presence of the bacteria in a compartment that cannot be mobilized from the lungs to the lymph node, where initial T cell activation occurs. |
format | Text |
id | pubmed-2234384 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2008 |
publisher | The Rockefeller University Press |
record_format | MEDLINE/PubMed |
spelling | pubmed-22343842008-07-21 Initiation of the adaptive immune response to Mycobacterium tuberculosis depends on antigen production in the local lymph node, not the lungs Wolf, Andrea J. Desvignes, Ludovic Linas, Beth Banaiee, Niaz Tamura, Toshiki Takatsu, Kiyoshi Ernst, Joel D. J Exp Med Articles The onset of the adaptive immune response to Mycobacterium tuberculosis is delayed compared with that of other infections or immunization, and allows the bacterial population in the lungs to expand markedly during the preimmune phase of infection. We used adoptive transfer of M. tuberculosis Ag85B-specific CD4(+) T cells to determine that the delayed adaptive response is caused by a delay in initial activation of CD4(+) T cells, which occurs earliest in the local lung-draining mediastinal lymph node. We also found that initial activation of Ag85B-specific T cells depends on production of antigen by bacteria in the lymph node, despite the presence of 100-fold more bacteria in the lungs. Although dendritic cells have been found to transport M. tuberculosis from the lungs to the local lymph node, airway administration of LPS did not accelerate transport of bacteria to the lymph node and did not accelerate activation of Ag85B-specific T cells. These results indicate that delayed initial activation of CD4(+) T cells in tuberculosis is caused by the presence of the bacteria in a compartment that cannot be mobilized from the lungs to the lymph node, where initial T cell activation occurs. The Rockefeller University Press 2008-01-21 /pmc/articles/PMC2234384/ /pubmed/18158321 http://dx.doi.org/10.1084/jem.20071367 Text en Copyright © 2008, The Rockefeller University Press This article is distributed under the terms of an Attribution–Noncommercial–Share Alike–No Mirror Sites license for the first six months after the publication date (see http://www.rupress.org/terms). After six months it is available under a Creative Commons License (Attribution–Noncommercial–Share Alike 4.0 Unported license, as described at http://creativecommons.org/licenses/by-nc-sa/4.0/). |
spellingShingle | Articles Wolf, Andrea J. Desvignes, Ludovic Linas, Beth Banaiee, Niaz Tamura, Toshiki Takatsu, Kiyoshi Ernst, Joel D. Initiation of the adaptive immune response to Mycobacterium tuberculosis depends on antigen production in the local lymph node, not the lungs |
title | Initiation of the adaptive immune response to Mycobacterium tuberculosis depends on antigen production in the local lymph node, not the lungs |
title_full | Initiation of the adaptive immune response to Mycobacterium tuberculosis depends on antigen production in the local lymph node, not the lungs |
title_fullStr | Initiation of the adaptive immune response to Mycobacterium tuberculosis depends on antigen production in the local lymph node, not the lungs |
title_full_unstemmed | Initiation of the adaptive immune response to Mycobacterium tuberculosis depends on antigen production in the local lymph node, not the lungs |
title_short | Initiation of the adaptive immune response to Mycobacterium tuberculosis depends on antigen production in the local lymph node, not the lungs |
title_sort | initiation of the adaptive immune response to mycobacterium tuberculosis depends on antigen production in the local lymph node, not the lungs |
topic | Articles |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2234384/ https://www.ncbi.nlm.nih.gov/pubmed/18158321 http://dx.doi.org/10.1084/jem.20071367 |
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