Abstract
Environmental nutrient availability influences T cell metabolism, impacting T cell function and shaping immune outcomes. Here, we identified ketone bodies (KBs)—including β-hydroxybutyrate (βOHB) and acetoacetate (AcAc)—as essential fuels supporting CD8+ T cell metabolism and effector function. βOHB directly increased CD8+ T effector (Teff) cell cytokine production and cytolytic activity, and KB oxidation (ketolysis) was required for Teff cell responses to bacterial infection and tumor challenge. CD8+ Teff cells preferentially used KBs over glucose to fuel the tricarboxylic acid (TCA) cycle in vitro and in vivo. KBs directly boosted the respiratory capacity and TCA cycle-dependent metabolic pathways that fuel CD8+ T cell function. Mechanistically, βOHB was a major substrate for acetyl-CoA production in CD8+ T cells and regulated effector responses through effects on histone acetylation. Together, our results identify cell-intrinsic ketolysis as a metabolic and epigenetic driver of optimal CD8+ T cell effector responses.
Originalsprog | Engelsk |
---|---|
Tidsskrift | Immunity |
Vol/bind | 56 |
Udgave nummer | 9 |
Sider (fra-til) | 2021-2035.e8 |
Antal sider | 24 |
ISSN | 1074-7613 |
DOI | |
Status | Udgivet - 2023 |
Bibliografisk note
Funding Information:We acknowledge Drs. Ralph DeBerardinis, Julian Lum, Sara Nowinski, Evan Lien, and members of the Jones and Krawczyk laboratories for scientific discussions contributing to this manuscript. We thank Teresa Leone, Matthew Vos, Jeanie Wedberg, Margene Brewer, and Michelle Minard for administrative assistance. We thank members of the Van Andel Institute (VAI) Core Facilities (metabolomics and bioenergetics, genomics, bioinformatics and biostatistics, flow cytometry, vivarium) for technical assistance. J.L. is supported by a VAI Metabolism & Nutrition (MeNu) Program Pathway-to-Independence Award and Canadian Institutes of Health Research (CIHR) Fellowship (MFE-181903). M.J.W. is supported by a National Cancer Institute (NCI) T32 training grant (T32CA251066-01A1). D.P.K. is supported by the National Institutes of Health (NIH, R01HL128349 and R01HL151345). C.M.K. is supported by the National Institute of Allergy and Infectious Diseases (NIAID, R21AI153997) and VAI. F.-M.B. is a FRQS Senior Scholar (281824) and is supported by the National Sciences and Engineering Research Council of Canada (RGPIN-2018-05414). S.B.R. is supported by the National Institute of General Medical Sciences (NIGMS, R35GM124736) and VAI. P.A.C. and P.P. are supported by the National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK, DK091538) and National Institute on Aging (NIA, AG069781). R.G.J. is supported by the Paul G. Allen Frontiers Group Distinguished Investigator Program, NIAID (R01AI165722), and VAI. Conceptualization, K.M.L. and R.G.J.; experimental design, K.M.L. J.L. E.H.M. D.P.K. P.P. C.M.K. F.-M.B. R.D.S. S.B.R. P.A.C. and R.G.J.; investigation, K.M.L. J.L. S.M.K.-G. L.R.D. E.H.M. M.J.W. B.M.O. A.K. L.M.D. M.S.D. S.E.C. R.T. and I.K.; data analysis, K.M.L. J.L. S.K.M.-G. E.H.M. M.J.W. B.M.O. Z.F. Z.M. B.M.D. K.H.L. K.S.W. D.L. R.D.S. and R.G.J.; writing – original draft, K.M.L. K.S.W. and R.G.J.; writing – editing, K.M.L. J.L. C.M.K. S.B.R. P.A.C. and R.G.J.; visualization, Z.F. and K.S.W.; supervision, R.G.J.; funding acquisition, R.G.J. R.G.J. is a scientific advisor for Agios Pharmaceuticals and Servier Pharmaceuticals and is a member of the Scientific Advisory Board of Immunomet Therapeutics. We support inclusive, diverse, and equitable conduct of research.
Funding Information:
We acknowledge Drs. Ralph DeBerardinis, Julian Lum, Sara Nowinski, Evan Lien, and members of the Jones and Krawczyk laboratories for scientific discussions contributing to this manuscript. We thank Teresa Leone, Matthew Vos, Jeanie Wedberg, Margene Brewer, and Michelle Minard for administrative assistance. We thank members of the Van Andel Institute (VAI) Core Facilities (metabolomics and bioenergetics, genomics, bioinformatics and biostatistics, flow cytometry, vivarium) for technical assistance. J.L. is supported by a VAI Metabolism & Nutrition (MeNu) Program Pathway-to-Independence Award and Canadian Institutes of Health Research (CIHR) Fellowship ( MFE-181903 ). M.J.W. is supported by a National Cancer Institute (NCI) T32 training grant ( T32CA251066-01A1 ). D.P.K. is supported by the National Institutes of Health (NIH, R01HL128349 and R01HL151345 ). C.M.K. is supported by the National Institute of Allergy and Infectious Diseases (NIAID, R21AI153997 ) and VAI . F.-M.B. is a FRQS Senior Scholar ( 281824 ) and is supported by the National Sciences and Engineering Research Council of Canada ( RGPIN-2018-05414 ). S.B.R. is supported by the National Institute of General Medical Sciences (NIGMS, R35GM124736 ) and VAI . P.A.C. and P.P. are supported by the National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK, DK091538 ) and National Institute on Aging (NIA, AG069781 ). R.G.J. is supported by the Paul G. Allen Frontiers Group Distinguished Investigator Program , NIAID ( R01AI165722 ), and VAI .
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© 2023 The Authors