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Immunity. 2013 Jul 25;39(1):184-95. doi: 10.1016/j.immuni.2013.06.015.

γδ T cells exhibit multifunctional and protective memory in intestinal tissues.

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1
Center for Integrated Immunology and Vaccine Research, Department of Immunology, University of Connecticut Health Center, Farmington, CT 06030, USA.

Abstract

The study of T cell memory and the target of vaccine design have focused on memory subsumed by T cells bearing the αβ T cell receptor. Alternatively, γδ T cells are thought to provide rapid immunity, particularly at mucosal borders. Here, we have shown that a distinct subset of mucosal γδ T cells mounts an immune response to oral Listeria monocytogenes (Lm) infection and leads to the development of multifunctional memory T cells capable of simultaneously producing interferon-γ and interleukin-17A in the murine intestinal mucosa. Challenge infection with oral Lm, but not oral Salmonella or intravenous Lm, induced rapid expansion of memory γδ T cells, suggesting contextual specificity to the priming pathogen. Importantly, memory γδ T cells were able to provide enhanced protection against infection. These findings illustrate that γδ T cells play a role with hallmarks of adaptive immunity in the intestinal mucosa.

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PMID:
23890071
PMCID:
PMC3749916
DOI:
10.1016/j.immuni.2013.06.015
[Indexed for MEDLINE]
Free PMC Article

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