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A Critical Role for CD8 T Cells in a Nonhuman Primate Model of Tuberculosis

Abstract

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.

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References
1.
Boom W, Canaday D, Fulton S, Gehring A, Rojas R, Torres M . Human immunity to M. tuberculosis: T cell subsets and antigen processing. Tuberculosis (Edinb). 2003; 83(1-3):98-106. DOI: 10.1016/s1472-9792(02)00054-9. View

2.
Shen Y, Shen L, Sehgal P, Huang D, Qiu L, Du G . Clinical latency and reactivation of AIDS-related mycobacterial infections. J Virol. 2004; 78(24):14023-32. PMC: 533912. DOI: 10.1128/JVI.78.24.14023-14032.2004. View

3.
Reimann K, Parker R, Seaman M, Beaudry K, Beddall M, Peterson L . Pathogenicity of simian-human immunodeficiency virus SHIV-89.6P and SIVmac is attenuated in cynomolgus macaques and associated with early T-lymphocyte responses. J Virol. 2005; 79(14):8878-85. PMC: 1168747. DOI: 10.1128/JVI.79.14.8878-8885.2005. View

4.
Soysal A, Millington K, Bakir M, Dosanjh D, Aslan Y, Deeks J . Effect of BCG vaccination on risk of Mycobacterium tuberculosis infection in children with household tuberculosis contact: a prospective community-based study. Lancet. 2005; 366(9495):1443-51. DOI: 10.1016/S0140-6736(05)67534-4. View

5.
Rosat J, Grant E, Beckman E, Dascher C, Sieling P, Frederique D . CD1-restricted microbial lipid antigen-specific recognition found in the CD8+ alpha beta T cell pool. J Immunol. 1999; 162(1):366-71. View