[PDF][PDF] γδ T cells exhibit multifunctional and protective memory in intestinal tissues

BS Sheridan, PA Romagnoli, QM Pham, HH Fu… - Immunity, 2013 - cell.com
BS Sheridan, PA Romagnoli, QM Pham, HH Fu, F Alonzo, WD Schubert, NE Freitag…
Immunity, 2013cell.com
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 …
Summary
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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