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Nat Immunol. 2013 Oct;14(10):1064-72. doi: 10.1038/ni.2687. Epub 2013 Aug 18.

Rapid effector function of memory CD8+ T cells requires an immediate-early glycolytic switch.

Author information

1
1] Department of Biomedicine, Immunobiology, University of Basel, Basel, Switzerland. [2].

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.

PMID:
23955661
DOI:
10.1038/ni.2687
[Indexed for MEDLINE]

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