Cited by 1,150Sirtuins and Resveratrol in MedicineGenetics, Aging, and Longevity in Model OrganismsMitochondrial Function and Pathology

Sirt3 mediates reduction of oxidative damage and prevention of age-related hearing loss under caloric restriction

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Someya, Shinichi, Yu, Wei, Hallows, William C., Xu, Jinze, Vann, James M., Leeuwenburgh, Christiaan, Tanokura, Masaru, Denu, John M. +1 more·2010·Cell

Abstract

Caloric restriction (CR) extends the life span and health span of a variety of species and slows the progression of age-related hearing loss (AHL), a common age-related disorder associated with oxidative stress. Here, we report that CR reduces oxidative DNA damage in multiple tissues and prevents AHL in wild-type mice but fails to modify these phenotypes in mice lacking the mitochondrial deacetylase Sirt3, a member of the sirtuin family. In response to CR, Sirt3 directly deacetylates and activates mitochondrial isocitrate dehydrogenase 2 (Idh2), leading to increased NADPH levels and an increased ratio of reduced-to-oxidized glutathione in mitochondria. In cultured cells, overexpression of Sirt3 and/or Idh2 increases NADPH levels and protects from oxidative stress-induced cell death. Therefore, our findings identify Sirt3 as an essential player in enhancing the mitochondrial glutathione antioxidant defense system during CR and suggest that Sirt3-dependent mitochondrial adaptations may be a central mechanism of aging retardation in mammals.

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Crossref · 10.1016/j.cell.2010.10.002

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  • SIRT3 is essential for caloric restriction-mediated mitigation of oxidative damage by regulating the glutathione antioxidant system, thereby regulating senescence-associated pathologies propagated by oxidative stress.

    “SIRT3 is also essential for the caloric restriction-mediated mitigation of oxidative damage by regulating the glutathione antioxidant system, thereby regulating senescence-associated pathologies propagated by oxidative stress [209].”

    From Redox control of senescence and age-related disease. (2017) · cites this paper as [209]

  • SIRT3 deacetylates manganese superoxide dismutase and isocitrate dehydrogenase 2.

    “The mitochondrial SIRT3 deacetylates two of these enzymes: manganese superoxide dismutase (MnSOD) (Tao et al. 2010) and isocitrate dehydrogenase 2 (IDH2)(Someya et al. 2010).”
  • SIRT3 is necessary for the protective effect of calorie restriction on age-related hearing loss.

    “Remarkably, SIRT3 is necessary for the protective effect of calorie restriction on age-related hearing loss supporting a key role for SIRT3-dependent mitochondrial adaptations against aging in mammals (Someya et al. 2010).”
  • Many protective features of the calorie-restriction response, including resistance to oxidative stress and reduced hearing loss, require SIRT3.

    “SIRT3 is required for many protective aspects of this adaptive shift ((Someya et al. 2010); (Qiu et al. 2010); (Amigo et al. 2017)), such as oxidative stress resistance and attenuated hearing loss.”
  • Two enzymes involved in ROS detoxification, MnSOD and IDH2, are direct targets of SirT3.

    “Recently, two enzymes that have a role in the detoxification of ROS were demonstrated to be direct targets of SirT3 (Qiu et al., 2010; Someya et al., 2010; Tao et al., 2010).”

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Authors
Someya, S., Yu, W., Hallows, W. C., Xu, J., Vann, J. M., Leeuwenburgh, C., Tanokura, M., Denu, J. M., & Prolla, T. A.
Affiliations
  • University of Wisconsin–Madison (US)
  • University of Florida (US)
  • The University of Tokyo (JP)
Corresponding author
  • Denu, John M.
  • Prolla, Tomas A.
Venue
Cell
Publisher
Elsevier BV
Published
2010-11
Volume
143
Issue
5
Pages
802-812
ISSN
0092-8674 (ISSN-L)
OpenAlex
W2101580126
Cited by
1,150
References
68
Citations by year
2026: 40 · 2025: 58 · 2024: 39 · 2023: 41 · 2022: 82 · 2021: 94 · 2020: 83 · 2019: 72 · 2018: 84 · 2017: 83 · 2016: 86 · 2015: 85 · 2014: 83 · 2013: 99 · 2012: 62
FWCI
27.82
Type
journal article
Language
en
Open access
Locations
  • Cell (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • National Institutes of Health
  • National Institute on Aging (R01AG021905, AG021905, P30AG028740)
  • National Institute of General Medical Sciences (GM-065386, R01GM065386)
Topics
  • Health Sciences › Medicine › Geriatrics and Gerontology › Sirtuins and Resveratrol in Medicine
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Aging › Genetics, Aging, and Longevity in Model Organisms
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Mitochondrial Function and Pathology
Keywords
SIRT3, caloric restriction, age-related hearing loss, oxidative stress, oxidative DNA damage, IDH2, NADPH, glutathione, sirtuins, aging
MeSH terms
Aging, Animals, Antioxidants, DNA Damage, Female, Glutathione, Isocitrate Dehydrogenase, Male, Mice, Inbred C57BL, Mitochondria, Oxidative Stress, Caloric Restriction, Hearing Loss, Mice, Sirtuin 3

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