Assessing the role of dendritic cells and macrophages in the induction of T cell responses against Mycobacterium avium

Claudia A Briseno, University of Texas at El Paso

Abstract

Mycobacterium avium (M. avium) is an opportunistic pathogen that is readily cleared by immunocompetent hosts yet causes severe disease and morbidity in immunocompromised individuals. Clearance of M. avium requires CD4+ T cell responses, however little is known about the mechanism by which M. avium elicits adaptive immunity. To assess the role that DC and MΦs may play in the clearance of M. avium, bone marrow-derived DC and MΦs, generated from C57BL/6 mice, were analyzed for activation, phagocytic ability, survival upon infection with M. avium genomic strain MAC 104 and induction of T cell responses as measured by T cell proliferation and production of IFN-γ. The cells were infected for 4 h at a multiplicity of infection of 3 or 5 and were accessed 0, 24, 48, and 72 h post-infection. All comparisons were made to non-infected controls. The data provides evidence for differential roles of DC and MΦs in M. avium clearance. (Abstract shortened by UMI.)^

Subject Area

Health Sciences, Immunology

Recommended Citation

Briseno, Claudia A, "Assessing the role of dendritic cells and macrophages in the induction of T cell responses against Mycobacterium avium" (2004). ETD Collection for University of Texas, El Paso. AAIEP10777.
http://digitalcommons.utep.edu/dissertations/AAIEP10777

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