TY - JOUR
T1 - The purinergic receptor P2RX7 directs metabolic fitness of long-lived memory CD8+ T cells
AU - Borges Da Silva, Henrique
AU - Beura, Lalit K.
AU - Wang, Haiguang
AU - Hanse, Eric A.
AU - Gore, Reshma
AU - Scott, Milcah C.
AU - Walsh, Daniel A.
AU - Block, Katharine E.
AU - Fonseca, Raissa
AU - Yan, Yan
AU - Hippen, Keli L.
AU - Blazar, Bruce R.
AU - Masopust, David
AU - Kelekar, Ameeta
AU - Vulchanova, Lucy
AU - Hogquist, Kristin A.
AU - Jameson, Stephen C.
N1 - Publisher Copyright:
© 2018 Macmillan Publishers Ltd., part of Springer Nature.
PY - 2018/7/12
Y1 - 2018/7/12
N2 - Extracellular ATP (eATP) is an ancient 'danger signal' used by eukaryotes to detect cellular damage 1 . In mice and humans, the release of eATP during inflammation or injury stimulates both innate immune activation and chronic pain through the purinergic receptor P2RX7 2-4 . It is unclear, however, whether this pathway influences the generation of immunological memory, a hallmark of the adaptive immune system that constitutes the basis of vaccines and protective immunity against re-infection 5,6 . Here we show that P2RX7 is required for the establishment, maintenance and functionality of long-lived central and tissue-resident memory CD8+ T cell populations in mice. By contrast, P2RX7 is not required for the generation of short-lived effector CD8+ T cells. Mechanistically, P2RX7 promotes mitochondrial homeostasis and metabolic function in differentiating memory CD8+ T cells, at least in part by inducing AMP-activated protein kinase. Pharmacological inhibitors of P2RX7 provoked dysregulated metabolism and differentiation of activated mouse and human CD8+ T cells in vitro, and transient P2RX7 blockade in vivo ameliorated neuropathic pain but also compromised production of CD8+ memory T cells. These findings show that activation of P2RX7 by eATP provides a common currency that both alerts the nervous and immune system to tissue damage, and promotes the metabolic fitness and survival of the most durable and functionally relevant memory CD8+ T cell populations.
AB - Extracellular ATP (eATP) is an ancient 'danger signal' used by eukaryotes to detect cellular damage 1 . In mice and humans, the release of eATP during inflammation or injury stimulates both innate immune activation and chronic pain through the purinergic receptor P2RX7 2-4 . It is unclear, however, whether this pathway influences the generation of immunological memory, a hallmark of the adaptive immune system that constitutes the basis of vaccines and protective immunity against re-infection 5,6 . Here we show that P2RX7 is required for the establishment, maintenance and functionality of long-lived central and tissue-resident memory CD8+ T cell populations in mice. By contrast, P2RX7 is not required for the generation of short-lived effector CD8+ T cells. Mechanistically, P2RX7 promotes mitochondrial homeostasis and metabolic function in differentiating memory CD8+ T cells, at least in part by inducing AMP-activated protein kinase. Pharmacological inhibitors of P2RX7 provoked dysregulated metabolism and differentiation of activated mouse and human CD8+ T cells in vitro, and transient P2RX7 blockade in vivo ameliorated neuropathic pain but also compromised production of CD8+ memory T cells. These findings show that activation of P2RX7 by eATP provides a common currency that both alerts the nervous and immune system to tissue damage, and promotes the metabolic fitness and survival of the most durable and functionally relevant memory CD8+ T cell populations.
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U2 - 10.1038/s41586-018-0282-0
DO - 10.1038/s41586-018-0282-0
M3 - Article
C2 - 29973721
AN - SCOPUS:85049828359
SN - 0028-0836
VL - 559
SP - 264
EP - 268
JO - Nature
JF - Nature
IS - 7713
ER -