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- W2126199370 abstract "Abstract Although phosphoantigen-specific Vγ2Vδ2 T cells appear to play a role in antimicrobial and anticancer immunity, mucosal immune responses and effector functions of these γδ T cells during infection or phospholigand treatment remain poorly characterized. In this study, we demonstrate that the microbial phosphoantigen (E)-4-hydroxy-3-methyl-but-2-enyl pyrophosphate (HMBPP) plus IL-2 treatment of macaques induced a prolonged major expansion of circulating Vγ2Vδ2 T cells that expressed CD8 and produced cytotoxic perforin during their peak expansion. Interestingly, HMBPP-activated Vγ2Vδ2 T cells underwent an extraordinary pulmonary accumulation, which lasted for 3–4 mo, although circulating Vγ2Vδ2 T cells had returned to baseline levels weeks prior. The Vγ2Vδ2 T cells that accumulated in the lung following HMBPP/IL-2 cotreatment displayed an effector memory phenotype, as follows: CCR5+CCR7−CD45RA−CD27+ and were able to re-recognize phosphoantigen and produce copious amounts of IFN-γ up to 15 wk after treatment. Furthermore, the capacity of massively expanded Vγ2Vδ2 T cells to produce cytokines in vivo coincided with an increase in numbers of CD4+ and CD8+ αβ T cells after HMBPP/IL-2 cotreatment as well as substantial perforin expression by CD3+Vγ2− T cells. Thus, the prolonged HMBPP-driven antimicrobial and cytotoxic responses of pulmonary and systemic Vγ2Vδ2 T cells may confer immunotherapeutics against infectious diseases and cancers." @default.
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- W2126199370 date "2007-12-15" @default.
- W2126199370 modified "2023-09-24" @default.
- W2126199370 title "Prolonged (<i>E</i>)-4-Hydroxy-3-Methyl-But-2-Enyl Pyrophosphate-Driven Antimicrobial and Cytotoxic Responses of Pulmonary and Systemic Vγ2Vδ2 T Cells in Macaques" @default.
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- W2126199370 doi "https://doi.org/10.4049/jimmunol.179.12.8287" @default.
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