Cited by 1,085Cancer, Hypoxia, and MetabolismMetabolism, Diabetes, and CancerPI3K/AKT/mTOR signaling in cancer

The DOI matches its Crossref record; 119 of the 122 references it cites were found in a registry or an index; none of the 65 sources its claims cite is checked for support yet.

Tumor suppressors and cell metabolism: a recipe for cancer growth

Open access
Jones, Russell G., Thompson, Craig B.·2009·Genes & Development

Abstract

Growing tumors face two major metabolic challenges—how to meet the bioenergetic and biosynthetic demands of increased cell proliferation, and how to survive environmental fluctuations in external nutrient and oxygen availability when tumor growth outpaces the delivery capabilities of the existing vasculature. Cancer cells display dramatically altered metabolic circuitry that appears to directly result from the oncogenic mutations selected during the tumorigenic process. An emerging theme in cancer biology is that many of the genes that can initiate tumorigenesis are intricately linked to metabolic regulation. In turn, it appears that a number of well-established tumor suppressors play critical roles in suppressing growth and/or proliferation when intracellular supplies of essential metabolites become reduced. In this review, we consider the potential role of tumor suppressors as metabolic regulators.

Overview

AI snapshot

Written from the paper’s full text.

TL;DR

This review argues that oncogenic and tumor suppressor networks reprogram cancer cell metabolism to support growth and proliferation while also enabling adaptation to metabolic stress. It focuses on glycolysis, mitochondrial biosynthesis, AMPK, p53, HIF1, and autophagy as interconnected metabolic regulators in tumorigenesis.

Key findings

  • Proliferating cancer cells shift to aerobic glycolysis; >90% of pyruvate from glucose is converted to lactate by LDH-A, while the remaining ~10% enters mitochondria for biosynthetic pathways.
  • Tumor suppressors including p53, LKB1, TSC2, PTEN, VHL, SDH, FH, and Beclin-1 act as metabolic brakes or adaptation regulators, whereas oncogenes such as PI3K/Akt, c-Myc, and HIF1 promote nutrient uptake, glycolysis, biosynthesis, and survival.
  • AMPK is activated by energetic stress via LKB1 and can phosphorylate p53 at Ser-15, inducing a metabolic cell cycle checkpoint; in the absence of p53, metformin treatment delays tumor progression in cited work.
  • Autophagy is a conserved metabolic stress response and tumor suppressor mechanism; Beclin-1 haploinsufficiency promotes tumorigenesis in mouse models and is associated with breast and ovarian cancers in humans, and ~30% of cancers cannot be detected by FDG-PET.

Methods

  • Narrative review with no primary experimental data; it synthesizes literature on tumor suppressors and cell metabolism.
  • No sample, dataset, or statistical analysis is reported; the article cites 116 references.
  • Main analysis is a conceptual synthesis of oncogene/tumor suppressor signaling, metabolic pathways, and therapeutic implications.

Limitations

  • The paper states that it remains debated whether metabolic changes are a consequence or cause of tumorigenesis; the exact contribution of AMPK to tumor progression is unclear; the stimuli and target genes for p53-dependent metabolic responses remain to be determined; and the role of p53 in autophagy remains controversial.
  • Evident: as a narrative review, it does not systematically search or quantitatively synthesize evidence, and many mechanistic claims rely on cited studies rather than new data.
  • Evident: tumor heterogeneity and context dependence may limit generalizability; the paper notes that individual tumor cells could display distinct metabolic signatures and that ~30% of cancers are FDG-PET negative.

Model-written summary. Check it against the paper before relying on it.

Integrity signals

Registry

Crossref · 10.1101/gad.1756509

Cites

119 of 119 references verified0 citation errors · 0 not checkable

Statistics

Nothing to recompute.

Verification

Claims the paper makes

51 Own interpretation · 44 Not checked yet

Verify all 65 references — free account

Show all 73 claims

  • It may state two separate claims as one. 16
  • Probably not a substantial claim. 6
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  • The paper relies on this without support.

    In proliferating cancer cells, the majority (>90%) of pyruvate generated from glucose is converted to lactate by LDH-A and secreted rather than oxidized to completion.

    “In proliferating cancer cells, the majority of the pyruvate generated from glucose (>90%) is converted to lactate by lactate dehydrogenase (LDH-A), where it is readily secreted into the extracellular environment rather than oxidized to completion.”
  • The paper relies on this without support.

    Metabolism of glucose through the oxidative or nonoxidative arms of the pentose phosphate pathway generates ribose-5-phosphate, a key intermediate in nucleotide biosynthesis.

    “Metabolism of glucose through the oxidative or nonoxidative arms of the pentose phosphate pathway (PPP) generates ribose-5phosphate (Rib-5-P), a key intermediate in nucleotide biosynthesis.”
  • The paper relies on this without support.

    The oxidative arm of the PPP can produce NADPH, which supplies a pool of reducing equivalents for both nucleotide and fatty acid biosynthesis.

    “The oxidative arm of the PPP can also produce NADPH, which supplies a pool of reducing equivalents for both nucleotide and fatty acid biosynthesis.”
  • The paper relies on this without support.

    Pyruvate can be imported into the mitochondria and converted into substrates for the production of additional amino acids or fatty acid synthesis, and used to maintain mitochondrial membrane potential.

    “Finally, pyruvate can be imported into the mitochondria and converted into substrates for the production of additional amino acids or fatty acid synthesis, and used to maintain mitochondrial membrane potential.”
  • The paper relies on this without support.

    The remaining pyruvate from aerobic glycolysis that is not converted to lactate (~10% of total) enters the mitochondrion and is extruded from the TCA cycle at various steps for use in biosynthetic pathways.

    “The remaining pyruvate from aerobic glycolysis that is not converted to lactate (;10% of total) enters the mitochondrion and is extruded from the TCA cycle at various steps for use in biosynthetic pathways.”
  • The paper relies on this without support.

    A solid tumor can outstrip its nutrient and oxygen supply as it grows, resulting in metabolic stress.

    “A solid tumor can outstrip its nutrient and oxygen supply as it grows, resulting in metabolic stress (tumors experiencing metabolic stress are depicted in gray).”
  • The paper relies on this without support.

    Tumor cells must undergo a period of metabolic adaptation to survive metabolic stress or undergo apoptosis.

    “As a consequence, tumor cells must undergo a period of metabolic adaptation to survive this metabolic stress or undergo apoptosis.”
  • The paper relies on this without support.

    PI3K is a central regulator of metabolism in both nontransformed and transformed cells.

    “A central regulator of metabolism in both nontransformed and transformed cells is the phosphatidylinositol 3-kinase (PI3K), a lipid kinase that regulates the levels of phosphorylated phosphatidylinositol (PIP 3 ) at the plasma membrane.”
  • The paper relies on this without support.

    Growth factor-dependent activation of PI3K leads to activation of downstream effectors including Akt and mTOR that coordinate metabolic activities supporting cellular biosynthesis.

    “Growth factor-dependent activation of PI3K leads to the activation of downstream effectors including Akt and the mammalian target of rapamycin (mTOR) that coordinate metabolic activities that support cellular biosynthesis.”
  • The paper relies on this without support.

    mTOR coordinates protein synthesis by regulating amino acid uptake, tRNA charging, and translation initiation.

    “mTOR coordinates protein synthesis by regulating amino acid uptake, tRNA charging, and translation initiation.”
  • The paper relies on this without support.

    Myc is a transcription factor activated by growth factor stimulation and is essential for the regulation of proliferation and cell cycle entry in nontransformed cells.

    “Myc is a transcription factor activated by growth factor stimulation and is essential for the regulation of proliferation and cell cycle entry in nontransformed cells.”
  • The paper relies on this without support.

    AMPK is activated under conditions of energetic stress, such as that triggered by nutrient deprivation or hypoxia.

    “As a cellular sensor of AMP levels, AMPK is activated under conditions of energetic stress, such as that triggered by nutrient deprivation or hypoxia.”
  • The paper relies on this without support.

    Beclin-1 is required for autophagy induction in mammalian cells.

    “Studies involving Beclin-1, which is required for autophagy induction in mammalian cells, suggest that autophagy functions as an important tumor suppressor mechanism.”
  • The paper relies on this without support.

    SDH and FH function as tumor suppressors in humans.

    “However, the fact that metabolic enzymes such as SDH and FH function as tumor suppressors in humans suggests that metabolic deregulation can be an initiating event in cancer.”
  • The paper relies on this without support.

    Cancer cells can become dependent on the activity of a specific oncogene for function and survival (oncogene addiction).

    “In cancer cells, a given transformation event (i.e., oncogene activation) may play a qualitatively different or essential role in a given pathway compared with its role in normal cells, such that cancer cells become dependent on the activity of a specific oncogene for function and survival, a concept known as oncogene addiction.”
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Citations

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Metadata

Authors
Jones, R. G., & Thompson, C. B.
Affiliations
  • McGill University (CA)
  • Abramson Cancer Center (US)
Venue
Genes & Development
Published
2009-03-01
Volume
23
Issue
5
Pages
537-548
ISSN
  • 0890-9369 (ISSN-L)
  • 1549-5477
OpenAlex
W2127049578
Cited by
1,085
References
122
Citations by year
2026: 11 · 2025: 39 · 2024: 30 · 2023: 54 · 2022: 50 · 2021: 63 · 2020: 56 · 2019: 66 · 2018: 69 · 2017: 68 · 2016: 69 · 2015: 78 · 2014: 100 · 2013: 97 · 2012: 87
Type
posted content
Language
en
Open access
Locations
  • Genes & Development (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • McGill University
  • National Institutes of Health
  • Canadian Institutes of Health Research
  • National Cancer Institute (R01CA105463)
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 › PI3K/AKT/mTOR signaling in cancer
Keywords
tumor suppressor, cancer metabolism, tumor growth, oncogenic mutations, metabolic regulation, cell proliferation, nutrient availability, oxygen availability, tumor vasculature, biosynthesis, bioenergetics
MeSH terms
Animals, Autophagy, Cells, Glycolysis, Humans, Mitochondria, Neoplasms, Oncogenes, Signal Transduction, Genes, Tumor Suppressor, Cell Proliferation, AMP-Activated Protein Kinases

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