Cited by 780Telomeres, Telomerase, and SenescenceGenetics, Aging, and Longevity in Model OrganismsFOXO transcription factor regulation

Akt Determines Replicative Senescence and Oxidative or Oncogenic Premature Senescence and Sensitizes Cells to Oxidative Apoptosis

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Nogueira, Veronique, Park, Youngkyu, Chen, Chia-Chen, Xu, Pei-Zhang, Chen, Mei-Ling, Tonic, Ivana, Unterman, Terry, Hay, Nissim·2008·Cancer Cell

Abstract

Akt deficiency causes resistance to replicative senescence, to oxidative stress- and oncogenic Ras-induced premature senescence, and to reactive oxygen species (ROS)-mediated apoptosis. Akt activation induces premature senescence and sensitizes cells to ROS-mediated apoptosis by increasing intracellular ROS through increased oxygen consumption and by inhibiting the expression of ROS scavengers downstream of FoxO, particularly sestrin 3. This uncovers an Achilles' heel of Akt, since in contrast to its ability to inhibit apoptosis induced by multiple apoptotic stimuli, Akt could not inhibit ROS-mediated apoptosis. Furthermore, treatment with rapamycin that led to further Akt activation and resistance to etoposide hypersensitized cancer cells to ROS-mediated apoptosis. Given that rapamycin alone is mainly cytostatic, this constitutes a strategy for cancer therapy that selectively eradicates cancer cells via Akt activation.

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Crossref · 10.1016/j.ccr.2008.11.003

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Authors
Nogueira, V., Park, Y., Chen, C.-C., Xu, P.-Z., Chen, M.-L., Tonic, I., Unterman, T., & Hay, N.
Affiliations
University of Illinois Chicago (US)
Corresponding author
Hay, Nissim
Venue
Cancer Cell
Publisher
Elsevier BV
Published
2008-12
Volume
14
Issue
6
Pages
458-470
ISSN
1535-6108 (ISSN-L)
OpenAlex
W2132399579
Cited by
780
References
41
Citations by year
2026: 14 · 2025: 18 · 2024: 33 · 2023: 45 · 2022: 57 · 2021: 68 · 2020: 35 · 2019: 37 · 2018: 54 · 2017: 44 · 2016: 41 · 2015: 52 · 2014: 44 · 2013: 61 · 2012: 48
FWCI
28.65
Type
journal article
Language
en
Open access
Locations
  • Cancer Cell (publishedVersion, other-oa)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
  • HAL (submittedVersion, cc-by)
Funders
  • National Institutes of Health
  • University of Illinois at Chicago
  • National Institute on Aging (AG 025953, R01AG025953, R01AG016927, AG016927)
  • National Cancer Institute (CA090764, R01CA090764)
Topics
  • Health Sciences › Medicine › Physiology › Telomeres, Telomerase, and Senescence
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Aging › Genetics, Aging, and Longevity in Model Organisms
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › FOXO transcription factor regulation
Keywords
Akt, replicative senescence, premature senescence, oxidative stress, oncogenic Ras, reactive oxygen species, FOXO, oxygen consumption, rapamycin, cancer therapy
MeSH terms
Forkhead Box Protein O1, Animals, Male, Neoplasms, Oxygen Consumption, RNA, Messenger, Signal Transduction, Gene Expression Regulation, Neoplastic, Cellular Senescence, Apoptosis, Reactive Oxygen Species, Mice, Knockout, Oxidative Stress, Sirolimus, Mice, Forkhead Transcription Factors

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