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Increased demand for NAD(+) relative to ATP drives aerobic glycolysis

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Luengo, Alba, Li, Zhaoqi, Gui, Dan Y., Sullivan, Lucas B., Zagorulya, Maria, Do, Brian T., Ferreira, Raphael, Naamati, Adi +6 more·2021·Molecular Cell

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Abstract

Abstract Aerobic glycolysis, or preferential fermentation of glucose-derived pyruvate to lactate despite available oxygen, is a hallmark of proliferative metabolism that is observed across many organisms and conditions. To better understand why aerobic glycolysis is associated with cell proliferation, we examined the metabolic consequence of activating the pyruvate dehydrogenase complex (PDH) to increase mitochondrial pyruvate oxidation at the expense of fermentation. We find that increasing PDH activity impairs cell proliferation by reducing the nicotinamide adenine dinucleotide cofactor ratio (NAD+/NADH). This change in NAD+/NADH ratio is caused by an increase in mitochondrial membrane potential that impairs mitochondrial electron transport and NAD+ regeneration. Uncoupling mitochondrial respiration from ATP synthesis or increasing ATP hydrolysis restores NAD+/NADH homeostasis and proliferation even when glucose oxidation is increased. These data suggest that when the demand for NAD+ to support oxidation reactions exceeds the demand for ATP consumption in cells, NAD+ regeneration by mitochondrial respiration becomes constrained, promoting fermentation despite available oxygen. This argues that cells engage in aerobic glycolysis when the cellular demand for NAD+ is in excess of the cellular demand for ATP.

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Crossref · 10.1016/j.molcel.2020.12.012

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  • Cell proliferation can be impaired when demand for mitochondrial NAD+ exceeds that of ATP, which may explain why highly proliferative cells often engage in aerobic glycolysis over pyruvate oxidation and OXPHOS even with sufficient oxygen.

    “These results indicate that cell proliferation can be impaired when the demand for mitochondrial NAD+ exceeds that of ATP and may explain why highly proliferative cells often engage in aerobic glycolysis over pyruvate oxidation and OXPHOS, even in the presence of sufficient oxygen (138).”
  • Increasing flux through OXPHOS by increasing ATP consumption reverses the growth inhibitory effects of PDHC activation.

    “Increasing flux through OXPHOS by increasing ATP consumption reverses the growth inhibitory effects of PDHC activation (138).”

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Authors
Luengo, A., Li, Z., Gui, D. Y., Sullivan, L. B., Zagorulya, M., Do, B. T., Ferreira, R., Naamati, A., Ali, A., Lewis, C. A., Thomas, C. J., Spranger, S., Matheson, N. J., & Vander Heiden, M. G.
Affiliations
  • Koch Institute for Integrative Cancer Research At MIT (US)
  • Fred Hutch Cancer Center (US)
  • Harvard University (US)
  • University of Cambridge (GB)
  • Whitehead Institute for Biomedical Research (US)
  • National Institutes of Health (US)
Venue
Molecular Cell
Publisher
Elsevier BV
Published
2021-02
Volume
81
Issue
4
Pages
691-707.e6
ISSN
1097-2765 (ISSN-L)
OpenAlex
W3113834486
Cited by
547
References
100
Citations by year
2026: 90 · 2025: 139 · 2024: 113 · 2023: 92 · 2022: 69 · 2021: 44
FWCI
17.48
Type
journal article
Language
en
Open access
Locations
  • Molecular Cell (publishedVersion, cc-by-nc-nd)
  • bioRxiv (Cold Spring Harbor Laboratory) (acceptedVersion, cc-by-nc-nd)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
  • Chalmers Research (Chalmers University of Technology) (submittedVersion)
  • DSpace@MIT (Massachusetts Institute of Technology) (submittedVersion, cc-by-nc-nd)
Funders
  • National Science Foundation
  • Howard Hughes Medical Institute
  • Medical Research Council
  • National Cancer Institute
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
  • Health Sciences › Medicine › Geriatrics and Gerontology › Sirtuins and Resveratrol in Medicine
Keywords
aerobic glycolysis, NAD+/NADH ratio, pyruvate dehydrogenase complex, pyruvate oxidation, cell proliferation, mitochondrial membrane potential, mitochondrial electron transport chain, NAD+ regeneration, uncoupled respiration, ATP turnover, glucose metabolism
MeSH terms
A549 Cells, Adenosine Triphosphate, Aerobiosis, Glucose, Glycolysis, HeLa Cells, Humans, NAD, Oxidation-Reduction

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