Cited by 33Genomics, phytochemicals, and oxidative stressGenetics, Aging, and Longevity in Model OrganismsTelomeres, Telomerase, and Senescence

Genetic deletion of Nrf2 promotes immortalization and decreases life span of murine embryonic fibroblasts

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Jodar, L., Mercken, E. M., Ariza, J., Younts, C., Gonzalez-Reyes, J. A., Alcain, F. J., Buron, I., de Cabo, R. +1 more·2011·The Journals of Gerontology Series A: Biological Sciences and Medical Sciences

Abstract

Nuclear factor E2-related factor-2 (Nrf2) transcription factor is one of the main regulators of intracellular redox balance and a sensor of oxidative and electrophilic stress. Low Nrf2 activity is usually associated with carcinogenesis, but Nrf2 is also considered as an oncogene because it increases survival of transformed cells. Because intracellular redox balance alterations are involved in both senescence and tumorigenesis, we investigated the impact of Nrf2 genetic deletion on cellular immortalization and life span of murine embryonic fibroblasts. We report that Nrf2 genetic deletion promotes immortalization due to an early loss of p53-dependent gene expression. However, compared with control cells, immortalized Nrf2-/- murine embryonic fibroblasts exhibited decreased growth, lower cyclin E levels, and impaired expression of NQO1 and cytochrome b₅ reductase. Moreover, SirT1 was also significantly reduced in immortalized Nrf2-/- murine embryonic fibroblasts, and these cells exhibited shorter life span. Our results underscore the dual role of Nrf2 in protection against carcinogenesis and in the delay of cellular aging.

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Crossref · 10.1093/gerona/glq181

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  1. Lind C, Cadenas E, Hochstein P, Ernster L. DT-diaphorase: purifica- tion, properties, and function. Methods Enzymol. 1990;186:287-301.

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Authors
Jodar, L., Mercken, E. M., Ariza, J., Younts, C., Gonzalez-Reyes, J. A., Alcain, F. J., Buron, I., de Cabo, R., & Villalba, J. M.
Affiliations
  • National Institutes of Health (US)
  • University of Córdoba (ES)
Venue
The Journals of Gerontology Series A: Biological Sciences and Medical Sciences
Published
2010-10-25
Volume
66A
Issue
3
Pages
247-256
ISSN
  • 1079-5006 (ISSN-L)
  • 1758-535X
OpenAlex
W2131611717
Cited by
33
References
54
Citations by year
2026: 1 · 2024: 1 · 2023: 1 · 2022: 4 · 2021: 1 · 2020: 3 · 2019: 1 · 2018: 6 · 2017: 2 · 2016: 3 · 2015: 2 · 2014: 1 · 2012: 6
FWCI
0.91
Type
journal article
Language
en
Open access
Locations
  • The Journals of Gerontology Series A (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Universidad de Córdoba (BIO-276)
  • Junta de Andalucía (BIO-276)
  • National Institute on Aging
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Genomics, phytochemicals, and oxidative stress
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Aging › Genetics, Aging, and Longevity in Model Organisms
  • Health Sciences › Medicine › Physiology › Telomeres, Telomerase, and Senescence
Keywords
Nrf2, gene deletion, cell immortalization, lifespan, murine embryonic fibroblasts, p53-dependent gene expression, cyclin E, NQO1, cytochrome b5 reductase, SIRT1, cellular aging, redox homeostasis, oxidative stress, oncogenes, carcinogenesis
MeSH terms
Animals, Fibroblasts, Gene Expression Regulation, Cellular Senescence, Sequence Deletion, NF-E2-Related Factor 2, Mice

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