Cited by 492Cancer, Hypoxia, and MetabolismMetabolism, Diabetes, and CancerCancer, Lipids, and Metabolism

Oncogenic K‐Ras decouples glucose and glutamine metabolism to support cancer cell growth

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Gaglio, Daniela, Metallo, Christian M, Gameiro, Paulo A, Hiller, Karsten, Danna, Lara Sala, Balestrieri, Chiara, Alberghina, Lilia, Stephanopoulos, Gregory +1 more·2011·Molecular Systems Biology

Abstract

Oncogenes such as K-ras mediate cellular and metabolic transformation during tumorigenesis. To analyze K-Ras-dependent metabolic alterations, we employed ¹³C metabolic flux analysis (MFA), non-targeted tracer fate detection (NTFD) of ¹⁵N-labeled glutamine, and transcriptomic profiling in mouse fibroblast and human carcinoma cell lines. Stable isotope-labeled glucose and glutamine tracers and computational determination of intracellular fluxes indicated that cells expressing oncogenic K-Ras exhibited enhanced glycolytic activity, decreased oxidative flux through the tricarboxylic acid (TCA) cycle, and increased utilization of glutamine for anabolic synthesis. Surprisingly, a non-canonical labeling of TCA cycle-associated metabolites was detected in both transformed cell lines. Transcriptional profiling detected elevated expression of several genes associated with glycolysis, glutamine metabolism, and nucleotide biosynthesis upon transformation with oncogenic K-Ras. Chemical perturbation of enzymes along these pathways further supports the decoupling of glycolysis and TCA metabolism, with glutamine supplying increased carbon to drive the TCA cycle. These results provide evidence for a role of oncogenic K-Ras in the metabolic reprogramming of cancer cells.

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Crossref · 10.1038/msb.2011.56

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  • Mutant KRAS upregulates GLUT1 to increase glucose uptake and induces HK1 and HK2 to increase glycolytic activity.

    “Gene expression and metabolic flux analyses have shown that it upregulates the expression of the GLUT1 glucose transporter to promote glucose uptake by cells, as well as inducing expression of hexokinase 1 and 2 (HK1 and HK2) rate-limiting enzymes of glycolysis, to increase glycolytic activity27–30 (Fig. 2a).”
  • Oncogenic KRAS elevates expression of enzymes involved in glutaminolysis.

    “Oncogenic KRAS elevates the gene expression of enzymes involved in glutaminolysis27.”

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Authors
Gaglio, D., Metallo, C. M., Gameiro, P. A., Hiller, K., Danna, L. S., Balestrieri, C., Alberghina, L., Stephanopoulos, G., & Chiaradonna, F.
Affiliations
  • Massachusetts Institute of Technology (US)
  • University of Milano-Bicocca (IT)
Corresponding author
  • Alberghina, Lilia
  • Stephanopoulos, Gregory
Venue
Molecular Systems Biology
Published
2011-08-16
Volume
7
Issue
1
Pages
523-523
ISSN
1744-4292 (ISSN-L)
OpenAlex
W2141517721
Cited by
492
References
63
Citations by year
2026: 12 · 2025: 15 · 2024: 37 · 2023: 28 · 2022: 36 · 2021: 40 · 2020: 41 · 2019: 41 · 2018: 43 · 2017: 31 · 2016: 41 · 2015: 38 · 2014: 31 · 2013: 32 · 2012: 22
FWCI
9.57
Type
journal article
Language
en
Open access
Locations
  • Molecular Systems Biology (publishedVersion, cc-by-nc-sa)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by-nc-sa)
  • PubMed Central (publishedVersion, cc-by-nc-sa)
  • PubMed (publishedVersion)
  • BOA (University of Milano-Bicocca) (submittedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion)
  • Open Repository and Bibliography (University of Luxembourg) (submittedVersion)
Funders
  • American Cancer Society
  • Ministero dell’Istruzione, dell’Università e della Ricerca
  • National Institutes of Health (MDA-MB-231)
  • National Cancer Institute (R01CA160458)
  • National Institute of Diabetes and Digestive and Kidney Diseases (R01DK075850)
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 › Cancer Research › Cancer, Lipids, and Metabolism
Keywords
oncogenic KRAS, tumor metabolic reprogramming, glucose metabolism, glutamine metabolism, glycolysis, TCA cycle, metabolic flux analysis, 13C metabolic flux analysis, nucleotide synthesis, tumor cell proliferation, oncogenic transformation
MeSH terms
Animals, Cell Line, Transformed, Cell Transformation, Neoplastic, Citric Acid Cycle, Fibroblasts, Flow Cytometry, Glucose, Glutamine, Glycolysis, Humans, Isotope Labeling, Gas Chromatography-Mass Spectrometry, Neoplasms, Gene Expression Regulation, Neoplastic, Proto-Oncogene Proteins p21(ras), Oligonucleotide Array Sequence Analysis, Gene Expression Profiling, NIH 3T3 Cells, Cell Line, Tumor, Cell Proliferation, Mice

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