Abstract
Antigen-experienced memory T cells acquire effector function with innate-like kinetics; however, the metabolic requirements of these cells are unknown. Here we show that rapid interferon-γ (IFN-γ) production of effector memory (EM) CD8(+) T cells, activated through stimulation mediated by the T cell antigen receptor (TCR) and the costimulatory receptor CD28 or through cognate interactions, was linked to increased glycolytic flux. EM CD8(+) T cells exhibited more glyceraldehyde-3-phosphate dehydrogenase (GAPDH) activity at early time points, before proliferation commenced, than did naive cells activated under similar conditions. CD28 signaling via the serine-threonine kinase Akt and the metabolic-checkpoint kinase mTORC2 was needed to sustain TCR-mediated immediate-early glycolysis. Unlike glycolysis in proliferating cells, immediate-early glycolysis in memory CD8(+) T cells was rapamycin insensitive. Thus, CD8(+) memory T cells have an Akt-dependent 'imprinted' glycolytic potential that is required for efficient immediate-early IFN-γ recall responses.
Original language | English |
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Pages (from-to) | 1064-72 |
Number of pages | 9 |
Journal | Nature Immunology |
Volume | 14 |
Issue number | 10 |
DOIs | |
Publication status | Published - Oct 2013 |
Keywords
- CD8-Positive T-Lymphocytes
- Chromatin Assembly and Disassembly
- Epitopes, T-Lymphocyte
- Glycolysis
- Herpesvirus 4, Human
- Humans
- Immunologic Memory
- Interferon-gamma
- Lymphocyte Activation
- Mechanistic Target of Rapamycin Complex 2
- Metabolome
- Metabolomics
- Multiprotein Complexes
- Promoter Regions, Genetic
- Proto-Oncogene Proteins c-akt
- Signal Transduction
- TOR Serine-Threonine Kinases
- Journal Article
- Research Support, Non-U.S. Gov't