Cited by 236Sirtuins and Resveratrol in MedicineGenetics, Aging, and Longevity in Model OrganismsNuclear Receptors and Signaling

Sirtuin regulation in aging and injury

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Poulose, Ninu, Raju, Raghavan·2015·Biochimica et Biophysica Acta (BBA) - Molecular Basis of Disease

Abstract

Sirtuins or Sir2 family of proteins are a class of NAD(+) dependent protein deacetylases which are evolutionarily conserved from bacteria to humans. Some sirtuins also exhibit mono-ADP ribosyl transferase, demalonylation and desuccinylation activities. Originally identified in the yeast, these proteins regulate key cellular processes like cell cycle, apoptosis, metabolic regulation and inflammation. Humans encode seven sirtuin isoforms SIRT1-SIRT7 with varying intracellular distribution. Apart from their classic role as histone deacetylases regulating transcription, a number of cytoplasmic and mitochondrial targets of sirtuins have also been identified. Sirtuins have been implicated in longevity and accumulating evidence indicate their role in a spectrum of diseases like cancer, diabetes, obesity and neurodegenerative diseases. A number of studies have reported profound changes in SIRT1 expression and activity linked to mitochondrial functional alterations following hypoxic-ischemic conditions and following reoxygenation injury. The SIRT1 mediated deacetylation of targets such as PGC-1α, FOXO3, p53 and NF-κb has profound effect on mitochondrial function, apoptosis and inflammation. These biological processes and functions are critical in life-span determination and outcome following injury. Aging is reported to be characterized by declining SIRT1 activity, and its increased expression or activation demonstrated prolonged life-span in lower forms of animals. A pseudohypoxic state due to declining NAD(+) has also been implicated in aging. In this review we provide an overview of studies on the role of sirtuins in aging and injury.

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Crossref · 10.1016/j.bbadis.2015.08.017

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  • The SIRT1-mediated deacetylation of p53, FOXO3, and other targets has a significant impact on apoptosis, inflammation, and mitochondrial function.

    “The SIRT1-mediated deacetylation of p53, FOXO3, and other targets has a significant impact on apoptosis, inflammation, and mitochondrial function (Poulose and Raju 2015).”

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Authors
Poulose, N., & Raju, R.
Affiliations
Augusta University (US)
Corresponding author
Raju, Raghavan
Venue
Biochimica et Biophysica Acta (BBA) - Molecular Basis of Disease
Publisher
Elsevier BV
Published
2015-11
Volume
1852
Issue
11
Pages
2442-2455
ISSN
0925-4439 (ISSN-L)
OpenAlex
W2114556905
Cited by
236
References
314
Citations by year
2026: 9 · 2025: 12 · 2024: 11 · 2023: 21 · 2022: 23 · 2021: 28 · 2020: 20 · 2019: 17 · 2018: 19 · 2017: 39 · 2016: 31 · 2015: 4
FWCI
3.26
Type
journal article
Language
en
Open access
Locations
  • Biochimica et Biophysica Acta (BBA) - Molecular Basis of Disease (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
National Institute of General Medical Sciences (R01 GM 101927)
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 › Neuroscience › Cellular and Molecular Neuroscience › Nuclear Receptors and Signaling
Keywords
sirtuins, SIRT1, aging, tissue damage, NAD+-dependent deacetylation, mitochondrial function, hypoxia-ischemia, reoxygenation injury, PGC-1α, FOXO3, p53, NF-κB, apoptosis, inflammation, longevity, pseudohypoxia, neurodegenerative diseases, cancer, diabetes mellitus, obesity

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