Cited by 1,328Cancer, Hypoxia, and MetabolismCancer, Lipids, and MetabolismMetabolism, Diabetes, and Cancer

Reductive carboxylation supports growth in tumour cells with defective mitochondria

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Mullen, Andrew R., Wheaton, William W., Jin, Eunsook S., Chen, Pei-Hsuan, Sullivan, Lucas B., Cheng, Tzuling, Yang, Youfeng, Linehan, W. Marston +2 more·2012·Nature

Abstract

Mitochondrial metabolism provides precursors to build macromolecules in growing cancer cells. In normally functioning tumour cell mitochondria, oxidative metabolism of glucose- and glutamine-derived carbon produces citrate and acetyl-coenzyme A for lipid synthesis, which is required for tumorigenesis. Yet some tumours harbour mutations in the citric acid cycle (CAC) or electron transport chain (ETC) that disable normal oxidative mitochondrial function, and it is unknown how cells from such tumours generate precursors for macromolecular synthesis. Here we show that tumour cells with defective mitochondria use glutamine-dependent reductive carboxylation rather than oxidative metabolism as the major pathway of citrate formation. This pathway uses mitochondrial and cytosolic isoforms of NADP(+)/NADPH-dependent isocitrate dehydrogenase, and subsequent metabolism of glutamine-derived citrate provides both the acetyl-coenzyme A for lipid synthesis and the four-carbon intermediates needed to produce the remaining CAC metabolites and related macromolecular precursors. This reductive, glutamine-dependent pathway is the dominant mode of metabolism in rapidly growing malignant cells containing mutations in complex I or complex III of the ETC, in patient-derived renal carcinoma cells with mutations in fumarate hydratase, and in cells with normal mitochondria subjected to acute pharmacological ETC inhibition. Our findings reveal the novel induction of a versatile glutamine-dependent pathway that reverses many of the reactions of the canonical CAC, supports tumour cell growth, and explains how cells generate pools of CAC intermediates in the face of impaired mitochondrial metabolism.

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  • CHK1 inhibitors and glutaminase inhibitors are considered potential candidates for treating Myc-overexpressing cancers.

    “Similarly, checkpoint kinase 1 (CHK1) inhibitors625–627 and glutaminase (GLS) inhibitors628–634 are also considered potential candidates for treating Myc-overexpressing cancers.”
  • In the context of constitutive HIF-2α stabilization or defective mitochondrial electron transport chain, glutamine-derived α-KG is reductively carboxylated through consumption of NADPH by IDH2 to generate citrate.

    “In the context of constitutive HIF-2α stabilization75 or a defective mitochondrial electron transport chain76, glutamine-derived α-KG is reductively carboxylated through the consumption of NADPH by IDH2 to generate citrate.”

    From Glutamine reliance in cell metabolism (2020) · cites this paper as [76]

  • Reductive carboxylation is a critical pathway to support the growth of tumor cells under hypoxia.

    “Previous reports showed that reductive carboxylation is a critical pathway to support the growth of tumor cells under hypoxia (Metallo, 2012; Mullen, 2012).”
  • Upregulation of the reductive carboxylation pathway enhances cancer cell proliferation.

    “The upregulation of the reductive carboxylation pathway enhances cancer cells proliferation (Metallo, 2012; Mullen, 2012; Wise et al., 2011).”
  • Under conditions of hypoxia or impaired mitochondrial respiration, certain reactions of the TCA cycle reverse to support glutamine-dependent reductive carboxylation.

    “For example, under conditions of hypoxia or impaired mitochondrial respiration, certain reactions of the TCA cycle reverse to support glutamine-dependent reductive carboxylation (92, 122, 123).”

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Authors
Mullen, A. R., Wheaton, W. W., Jin, E. S., Chen, P.-H., Sullivan, L. B., Cheng, T., Yang, Y., Linehan, W. M., Chandel, N. S., & DeBerardinis, R. J.
Affiliations
  • The University of Texas Southwestern Medical Center (US)
  • Northwestern University (US)
  • National Institutes of Health (US)
  • Harold C. Simmons Comprehensive Cancer Center (US)
Corresponding author
  • Chandel, Navdeep S.
  • DeBerardinis, Ralph J.
Venue
Nature
Published
2011-11-20
Volume
481
Issue
7381
Pages
385-388
ISSN
  • 0028-0836 (ISSN-L)
  • 1476-4687
OpenAlex
W2092152920
Cited by
1,328
References
27
Citations by year
2026: 81 · 2025: 92 · 2024: 63 · 2023: 70 · 2022: 107 · 2021: 107 · 2020: 91 · 2019: 88 · 2018: 82 · 2017: 84 · 2016: 96 · 2015: 98 · 2014: 99 · 2013: 86 · 2012: 80
FWCI
29.04
Type
journal article
Language
en
Open access
Locations
  • Nature (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
  • RePEc: Research Papers in Economics (submittedVersion)
Funders
  • National Institutes of Health
  • National Cancer Institute (R01CA123067, R01CA157996, T32CA009560)
  • National Institute of General Medical Sciences (T32GM083831, T32GM008061)
  • National Institute of Diabetes and Digestive and Kidney Diseases (K08DK072565, K01DK078933, DK078933)
  • National Center for Research Resources (P41RR002584, RR‐02584)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cancer Research › Cancer, Hypoxia, and Metabolism
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cancer Research › Cancer, Lipids, and Metabolism
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Metabolism, Diabetes, and Cancer
Keywords
reductive carboxylation, glutamine metabolism, IDH1, acetyl-CoA, lipogenesis, hypoxia, tumor growth, fumarate hydratase deficiency, renal carcinoma, TCA cycle
MeSH terms
Acetyl Coenzyme A, Animals, Carcinoma, Renal Cell, Electron Transport, Fumarate Hydratase, Glucose, Glutamine, Humans, Isocitrate Dehydrogenase, Kidney Neoplasms, Mitochondria, NADP, Neoplasms, Electron Transport Complex III, Cell Hypoxia, Citric Acid, Electron Transport Complex I, Cell Line, Tumor, Mice

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