Cited by 995Cancer, Hypoxia, and MetabolismMetabolism, Diabetes, and CancerPI3K/AKT/mTOR signaling in cancer

Pyruvate kinase M2 is a phosphotyrosine-binding protein

Christofk, Heather R., Vander Heiden, Matthew G., Wu, Ning, Asara, John M., Cantley, Lewis C.·2008·Nature

Abstract

Growth factors stimulate cells to take up excess nutrients and to use them for anabolic processes. The biochemical mechanism by which this is accomplished is not fully understood but it is initiated by phosphorylation of signalling proteins on tyrosine residues. Using a novel proteomic screen for phosphotyrosine-binding proteins, we have made the observation that an enzyme involved in glycolysis, the human M2 (fetal) isoform of pyruvate kinase (PKM2), binds directly and selectively to tyrosine-phosphorylated peptides. We show that binding of phosphotyrosine peptides to PKM2 results in release of the allosteric activator fructose-1,6-bisphosphate, leading to inhibition of PKM2 enzymatic activity. We also provide evidence that this regulation of PKM2 by phosphotyrosine signalling diverts glucose metabolites from energy production to anabolic processes when cells are stimulated by certain growth factors. Collectively, our results indicate that expression of this phosphotyrosine-binding form of pyruvate kinase is critical for rapid growth in cancer cells.

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Crossref · 10.1038/nature06667

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  • As glucose uptake and usage are under growth factor control, this observation raises the possibility that a basal level of TCA cycle oxidation in cells can persist independent of exogenous growth factor stimulation.

    “As glucose uptake and usage are under growth factor control (58, 59, 60), this observation raises the possibility that a basal level of TCA cycle oxidation in cells can persist independent of exogenous growth factor stimulation.”
  • Growth-factor-stimulated tyrosine phosphorylation of PKM2 decreases its activity.

    “Moreover, growth-factor–stimulated tyrosine phosphorylation of PKM2 further decreases its activity (58, 59).”

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Authors
Christofk, H. R., Vander Heiden, M. G., Wu, N., Asara, J. M., & Cantley, L. C.
Affiliations
Beth Israel Deaconess Medical Center (US)
Corresponding author
Cantley, Lewis C.
Venue
Nature
Published
2008-03
Volume
452
Issue
7184
Pages
181-186
ISSN
  • 0028-0836 (ISSN-L)
  • 1476-4687
OpenAlex
W1995444593
Cited by
995
References
18
Citations by year
2026: 19 · 2025: 22 · 2024: 34 · 2023: 46 · 2022: 47 · 2021: 56 · 2020: 47 · 2019: 56 · 2018: 67 · 2017: 55 · 2016: 55 · 2015: 68 · 2014: 88 · 2013: 60 · 2012: 88
FWCI
21.26
Type
journal article
Language
en
Open access
closed
Locations
  • Nature (publishedVersion)
  • PubMed (publishedVersion)
  • RePEc: Research Papers in Economics (submittedVersion)
Funders
  • Damon Runyon Cancer Research Foundation
  • National Institutes of Health
  • National Cancer Institute (T32CA009172)
  • National Institute of General Medical Sciences (R01GM056203)
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
PKM2, tyrosine phosphorylation, fructose-1,6-bisphosphate, allosteric regulation, glycolysis, cancer metabolism, Warburg effect, growth factor signaling, anabolic metabolism, tumor cell proliferation
MeSH terms
Allosteric Site, Animals, Catalysis, Cell Line, Cells, HeLa Cells, Humans, Lysine, Models, Molecular, Protein Binding, Pyruvate Kinase, Substrate Specificity, Phosphotyrosine, Peptide Library, Proteomics, Cell Proliferation

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