Cited by 155Telomeres, Telomerase, and SenescenceCancer, Lipids, and MetabolismGenetics, Aging, and Longevity in Model Organisms

The DOI matches its Crossref record; 53 of the 53 references it cites were found in a registry or an index.

Oncogene-induced senescence results in marked metabolic and bioenergetic alterations

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Abstract

Oncogene-induced senescence (OIS) is characterized by permanent growth arrest and the acquisition of a secretory, pro-inflammatory state. Increasingly, OIS is viewed as an important barrier to tumorgenesis. Surprisingly, relatively little is known about the metabolic changes that accompany and therefore may contribute to OIS. Here, we have performed a metabolomic and bioenergetic analysis of Ras-induced senescence. Profiling approximately 300 different intracellular metabolites reveals that cells that have undergone OIS develop a unique metabolic signature that differs markedly from cells undergoing replicative senescence. A number of lipid metabolites appear uniquely increased in OIS cells, including a marked increase in the level of certain intracellular long chain fatty acids. Functional studies reveal that this alteration in the metabolome reflects substantial changes in overall lipid metabolism. In particular, Ras-induced senescent cells manifest a decline in lipid synthesis and a significant increase in fatty acid oxidation. Increased fatty acid oxidation results in an unexpectedly high rate of basal oxygen consumption in cells that have undergone OIS. Pharmacological or genetic inhibition of carnitine palmitoyltransferase 1, the rate-limiting step in mitochondrial fatty acid oxidation, restores a pre-senescent metabolic rate and, surprisingly, selectively inhibits the secretory, pro-inflammatory state that accompanies OIS. Thus, Ras-induced senescent cells demonstrate profound alterations in their metabolic and bioenergetic profiles, particularly with regards to the levels, synthesis and oxidation of free fatty acids. Furthermore, the inflammatory phenotype that accompanies OIS appears to be related to these underlying changes in cellular metabolism.

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  1. 10.1111/j.1432-033.1989.tb15186.x · DOI

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Metadata

Authors
Quijano, C., Cao, L., Fergusson, M. M., Romero, H., Liu, J., Gutkind, S., Rovira, I. I., Mohney, R. P., Karoly, E. D., & Finkel, T.
Affiliations
  • National Institutes of Health (US)
  • Universidad de la República de Uruguay (UY)
  • Metabolon (United States) (US)
Corresponding author
Finkel, Toren
Venue
Cell Cycle
Published
2012-04
Volume
11
Issue
7
Pages
1383-1392
ISSN
  • 1538-4101 (ISSN-L)
  • 1551-4005
OpenAlex
W1997142695
Cited by
155
References
50
Citations by year
2026: 13 · 2025: 12 · 2024: 18 · 2023: 13 · 2022: 11 · 2021: 14 · 2020: 12 · 2019: 16 · 2018: 11 · 2017: 7 · 2016: 12 · 2015: 7 · 2014: 5 · 2013: 2 · 2012: 2
FWCI
3.43
Type
journal article
Language
en
Open access
Locations
  • Cell Cycle (publishedVersion)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
National Institutes of Health
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Telomeres, Telomerase, and Senescence
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cancer Research › Cancer, Lipids, and Metabolism
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Aging › Genetics, Aging, and Longevity in Model Organisms
Keywords
oncogene-induced senescence, Ras-induced senescence, cellular metabolism, bioenergetics, lipid metabolism, fatty acid oxidation, lipogenesis, long-chain fatty acids, carnitine palmitoyltransferase 1, oxygen consumption, replicative senescence, senescence-associated secretory phenotype, inflammation, metabolomics
MeSH terms
Carnitine O-Palmitoyltransferase, Energy Metabolism, Humans, Inflammation, Oncogenes, Oxygen Consumption, Oncogene Protein p21(ras), Cytokines, Cellular Senescence, Gene Expression Profiling, Cell Line, Tumor, Cell Proliferation, Lipid Metabolism, Metabolomics

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