Cited by 1,721Cancer, Hypoxia, and MetabolismMetabolism, Diabetes, and CancerMetabolomics and Mass Spectrometry Studies

Glucose feeds the TCA cycle via circulating lactate

Open access
Hui, Sheng, Ghergurovich, Jonathan M., Morscher, Raphael J., Jang, Cholsoon, Teng, Xin, Lu, Wenyun, Esparza, Lourdes A., Reya, Tannishtha +4 more·2017·Nature

Abstract

Mammalian tissues are fuelled by circulating nutrients, including glucose, amino acids, and various intermediary metabolites. Under aerobic conditions, glucose is generally assumed to be burned fully by tissues via the tricarboxylic acid cycle (TCA cycle) to carbon dioxide. Alternatively, glucose can be catabolized anaerobically via glycolysis to lactate, which is itself also a potential nutrient for tissues and tumours. The quantitative relevance of circulating lactate or other metabolic intermediates as fuels remains unclear. Here we systematically examine the fluxes of circulating metabolites in mice, and find that lactate can be a primary source of carbon for the TCA cycle and thus of energy. Intravenous infusions of 13 C-labelled nutrients reveal that, on a molar basis, the circulatory turnover flux of lactate is the highest of all metabolites and exceeds that of glucose by 1.1-fold in fed mice and 2.5-fold in fasting mice; lactate is made primarily from glucose but also from other sources. In both fed and fasted mice, 13 C-lactate extensively labels TCA cycle intermediates in all tissues. Quantitative analysis reveals that during the fasted state, the contribution of glucose to tissue TCA metabolism is primarily indirect (via circulating lactate) in all tissues except the brain. In genetically engineered lung and pancreatic cancer tumours in fasted mice, the contribution of circulating lactate to TCA cycle intermediates exceeds that of glucose, with glutamine making a larger contribution than lactate in pancreatic cancer. Thus, glycolysis and the TCA cycle are uncoupled at the level of lactate, which is a primary circulating TCA substrate in most tissues and tumours.

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Crossref · 10.1038/nature24057

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  • Recent studies in vivo have demonstrated that cells import lactate from the circulation via monocarboxylate transporter 1 and subsequently oxidize lactate to form pyruvate, resulting in a large fraction of pyruvate and downstream TCA cycle intermediates being derived from circulating lactate.

    “However, recent studies in vivo have demonstrated that cells import lactate from the circulation via monocarboxylate transporter 1 and subsequently oxidize lactate to form pyruvate, resulting in a large fraction of pyruvate and downstream TCA cycle intermediates being derived from circulating lactate (46, 47).”
  • In cultured cells, pyruvate is largely produced from glucose via glycolysis; in vivo, circulating lactate provides an additional major source of tissue pyruvate.

    “In cultured cells, pyruvate is largely produced from glucose via glycolysis; in vivo, circulating lactate provides an additional major source of tissue pyruvate (46, 47, 48).”
  • In most tissues and some tumors, the contribution of circulating lactate to TCA cycle intermediates exceeds that of glucose, supporting the idea that lactate is a fundamental TCA cycle substrate in living organisms.

    “In most tissues and some tumors, the contribution of circulating lactate to TCA cycle intermediates exceeds that of glucose, supporting the idea that lactate is a fundamental TCA cycle substrate in living organisms (46, 47).”
  • The contribution of circulating lactate to TCA cycle intermediates exceeds that of glucose in most tissues and tumors.

    “As described previously, the contribution of circulating lactate to TCA cycle intermediates exceeds that of glucose in most tissues and tumors (46, 47).”
  • Other organs readily export lactate derived from glucose metabolism and readily use circulating lactate for oxidative metabolism.

    “Other organs readily export the lactate they derive from glucose metabolism, and they readily use circulating lactate for their oxidative metabolism.”

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Research works printed but not linked: 2

  1. [24]Brooks G Circulation, Respiration, and Metabolism Gilles R 208 218 Springer 1985
  2. [32]Wollenberger A Ristau O Schoffa G Eine einfache Technik der extrem schnellen Abkühlung größerer Gewebestücke Pflugers Arch Gesamte Physiol Menschen Tiere 270 399 412 1960 13845757

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Authors
Hui, S., Ghergurovich, J. M., Morscher, R. J., Jang, C., Teng, X., Lu, W., Esparza, L. A., Reya, T., Zhan, L., Yanxiang Guo, J., White, E., & Rabinowitz, J. D.
Affiliations
  • Princeton University (US)
  • University of California San Diego (US)
  • Rutgers, The State University of New Jersey (US)
Corresponding author
Rabinowitz, Joshua D.
Venue
Nature
Published
2017-10-18
Volume
551
Issue
7678
Pages
115-118
ISSN
  • 0028-0836 (ISSN-L)
  • 1476-4687
OpenAlex
W2765303057
Cited by
1,721
References
37
Citations by year
2026: 172 · 2025: 234 · 2024: 219 · 2023: 239 · 2022: 227 · 2021: 201 · 2020: 182 · 2019: 142 · 2018: 93 · 2017: 10
FWCI
38.97
Type
journal article
Language
en
Open access
Locations
  • Nature (publishedVersion)
  • PubMed (publishedVersion)
  • Zurich Open Repository and Archive (University of Zurich) (acceptedVersion, other-oa)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
  • RePEc: Research Papers in Economics (submittedVersion)
  • eScholarship (California Digital Library) (submittedVersion)
  • Zurich Open Repository and Archive (University of Zurich) (submittedVersion, other-oa)
  • Zurich Open Repository and Archive (University of Zurich)
Funders
  • American Diabetes Association (1DP1DK113643)
  • Rutgers Cancer Institute of New Jersey (P30 CA072720, K22 CA190521)
  • Life Sciences Research Foundation
  • Cancer Research UK
  • National Institutes of Health (CA072720, DK019525)
  • Stand Up To Cancer (SU2C-AACR-DT-20-16)
  • National Cancer Institute (R01CA186043, K22CA190521, R01CA130893, P30CA072720, R50CA211437, R01CA163591, R35CA197699)
  • National Institute of Diabetes and Digestive and Kidney Diseases (DP1DK113643, P30DK019525)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cancer Research › Cancer, Hypoxia, and Metabolism
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Metabolism, Diabetes, and Cancer
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Metabolomics and Mass Spectrometry Studies
Keywords
lactate, TCA cycle, glucose metabolism, circulating metabolites, metabolic flux, cancer metabolism, fasting, glycolysis, glutamine, pancreatic cancer, lung cancer, energy metabolism
MeSH terms
Animals, Blood Glucose, Brain, Carbon, Citric Acid Cycle, Fasting, Glucose, Glutamine, Glycolysis, Muscles, Pancreatic Neoplasms, Lactic Acid, Mice

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