A critical role for CD8 T cells in a nonhuman primate model of tuberculosis

The role of CD8 T cells in anti-tuberculosis immunity in humans remains unknown, and studies of CD8 T cell-mediated protection against tuberculosis in mice have yielded controversial results. Unlike mice, humans and nonhuman primates share a number of important features of the immune system that rel...

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Veröffentlicht in:PLoS pathogens 2009-04, Vol.5 (4), p.e1000392-e1000392
Hauptverfasser: Chen, Crystal Y, Huang, Dan, Wang, Richard C, Shen, Ling, Zeng, Gucheng, Yao, Shuyun, Shen, Yun, Halliday, Lisa, Fortman, Jeff, McAllister, Milton, Estep, Jim, Hunt, Robert, Vasconcelos, Daphne, Du, George, Porcelli, Steven A, Larsen, Michelle H, Jacobs, Jr, William R, Haynes, Barton F, Letvin, Norman L, Chen, Zheng W
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container_title PLoS pathogens
container_volume 5
creator Chen, Crystal Y
Huang, Dan
Wang, Richard C
Shen, Ling
Zeng, Gucheng
Yao, Shuyun
Shen, Yun
Halliday, Lisa
Fortman, Jeff
McAllister, Milton
Estep, Jim
Hunt, Robert
Vasconcelos, Daphne
Du, George
Porcelli, Steven A
Larsen, Michelle H
Jacobs, Jr, William R
Haynes, Barton F
Letvin, Norman L
Chen, Zheng W
description The role of CD8 T cells in anti-tuberculosis immunity in humans remains unknown, and studies of CD8 T cell-mediated protection against tuberculosis in mice have yielded controversial results. Unlike mice, humans and nonhuman primates share a number of important features of the immune system that relate directly to the specificity and functions of CD8 T cells, such as the expression of group 1 CD1 proteins that are capable of presenting Mycobacterium tuberculosis lipids antigens and the cytotoxic/bactericidal protein granulysin. Employing a more relevant nonhuman primate model of human tuberculosis, we examined the contribution of BCG- or M. tuberculosis-elicited CD8 T cells to vaccine-induced immunity against tuberculosis. CD8 depletion compromised BCG vaccine-induced immune control of M. tuberculosis replication in the vaccinated rhesus macaques. Depletion of CD8 T cells in BCG-vaccinated rhesus macaques led to a significant decrease in the vaccine-induced immunity against tuberculosis. Consistently, depletion of CD8 T cells in rhesus macaques that had been previously infected with M. tuberculosis and cured by antibiotic therapy also resulted in a loss of anti-tuberculosis immunity upon M. tuberculosis re-infection. The current study demonstrates a major role for CD8 T cells in anti-tuberculosis immunity, and supports the view that CD8 T cells should be included in strategies for development of new tuberculosis vaccines and immunotherapeutics.
doi_str_mv 10.1371/journal.ppat.1000392
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Unlike mice, humans and nonhuman primates share a number of important features of the immune system that relate directly to the specificity and functions of CD8 T cells, such as the expression of group 1 CD1 proteins that are capable of presenting Mycobacterium tuberculosis lipids antigens and the cytotoxic/bactericidal protein granulysin. Employing a more relevant nonhuman primate model of human tuberculosis, we examined the contribution of BCG- or M. tuberculosis-elicited CD8 T cells to vaccine-induced immunity against tuberculosis. CD8 depletion compromised BCG vaccine-induced immune control of M. tuberculosis replication in the vaccinated rhesus macaques. Depletion of CD8 T cells in BCG-vaccinated rhesus macaques led to a significant decrease in the vaccine-induced immunity against tuberculosis. Consistently, depletion of CD8 T cells in rhesus macaques that had been previously infected with M. tuberculosis and cured by antibiotic therapy also resulted in a loss of anti-tuberculosis immunity upon M. tuberculosis re-infection. 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Consistently, depletion of CD8 T cells in rhesus macaques that had been previously infected with M. tuberculosis and cured by antibiotic therapy also resulted in a loss of anti-tuberculosis immunity upon M. tuberculosis re-infection. The current study demonstrates a major role for CD8 T cells in anti-tuberculosis immunity, and supports the view that CD8 T cells should be included in strategies for development of new tuberculosis vaccines and immunotherapeutics.</abstract><cop>United States</cop><pub>Public Library of Science</pub><pmid>19381260</pmid><doi>10.1371/journal.ppat.1000392</doi><oa>free_for_read</oa></addata></record>
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subjects Acquired immune deficiency syndrome
AIDS
Animals
BCG Vaccine - immunology
CD8 Antigens - immunology
CD8 lymphocytes
CD8-Positive T-Lymphocytes - immunology
Cytotoxicity
Disease Models, Animal
Genetic aspects
Health aspects
Human immunodeficiency virus
Humans
Immunology/Immunity to Infections
Infections
Infectious Diseases
Lymphocytes
Macaca mulatta
Multivariate analysis
Mycobacterium tuberculosis
Mycobacterium tuberculosis - immunology
Mycobacterium tuberculosis - physiology
Pathology
Prevention
Primates
Risk factors
Tuberculosis
Tuberculosis - immunology
Tuberculosis - prevention & control
Vaccination - veterinary
title A critical role for CD8 T cells in a nonhuman primate model of tuberculosis
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