Cell Reports (Dec 2020)

Lactate Limits T Cell Proliferation via the NAD(H) Redox State

  • William J. Quinn, III,
  • Jing Jiao,
  • Tara TeSlaa,
  • Jason Stadanlick,
  • Zhonglin Wang,
  • Liqing Wang,
  • Tatiana Akimova,
  • Alessia Angelin,
  • Patrick M. Schäfer,
  • Michelle D. Cully,
  • Caroline Perry,
  • Piotr K. Kopinski,
  • Lili Guo,
  • Ian A. Blair,
  • Louis R. Ghanem,
  • Michael S. Leibowitz,
  • Wayne W. Hancock,
  • Edmund K. Moon,
  • Matthew H. Levine,
  • Evgeniy B. Eruslanov,
  • Douglas C. Wallace,
  • Joseph A. Baur,
  • Ulf H. Beier

Journal volume & issue
Vol. 33, no. 11
p. 108500

Abstract

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Summary: Immune cell function is influenced by metabolic conditions. Low-glucose, high-lactate environments, such as the placenta, gastrointestinal tract, and the tumor microenvironment, are immunosuppressive, especially for glycolysis-dependent effector T cells. We report that nicotinamide adenine dinucleotide (NAD+), which is reduced to NADH by lactate dehydrogenase in lactate-rich conditions, is a key point of metabolic control in T cells. Reduced NADH is not available for NAD+-dependent enzymatic reactions involving glyceraldehyde 3-phosphate dehydrogenase (GAPDH) and 3-phosphoglycerate dehydrogenase (PGDH). We show that increased lactate leads to a block at GAPDH and PGDH, leading to the depletion of post-GAPDH glycolytic intermediates, as well as the 3-phosphoglycerate derivative serine that is known to be important for T cell proliferation. Supplementing serine rescues the ability of T cells to proliferate in the presence of lactate-induced reductive stress. Directly targeting the redox state may be a useful approach for developing novel immunotherapies in cancer and therapeutic immunosuppression.

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