Cited by 740Genetics, Aging, and Longevity in Model OrganismsSirtuins and Resveratrol in MedicineFungal and yeast genetics research

Nicotinamide and PNC1 govern lifespan extension by calorie restriction in Saccharomyces cerevisiae

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Anderson, Rozalyn M., Bitterman, Kevin J., Wood, Jason G., Medvedik, Oliver, Sinclair, David A.·2003·Nature

Abstract

Calorie restriction extends lifespan in a broad range of organisms, from yeasts to mammals. Numerous hypotheses have been proposed to explain this phenomenon, including decreased oxidative damage and altered energy metabolism. In Saccharomyces cerevisiae, lifespan extension by calorie restriction requires the NAD+-dependent histone deacetylase, Sir2 (ref. 1). We have recently shown that Sir2 and its closest human homologue SIRT1, a p53 deacetylase, are strongly inhibited by the vitamin B3 precursor nicotinamide. Here we show that increased expression of PNC1 (pyrazinamidase/nicotinamidase 1), which encodes an enzyme that deaminates nicotinamide, is both necessary and sufficient for lifespan extension by calorie restriction and low-intensity stress. We also identify PNC1 as a longevity gene that is responsive to all stimuli that extend lifespan. We provide evidence that nicotinamide depletion is sufficient to activate Sir2 and that this is the mechanism by which PNC1 regulates longevity. We conclude that yeast lifespan extension by calorie restriction is the consequence of an active cellular response to a low-intensity stress and speculate that nicotinamide might regulate critical cellular processes in higher organisms.

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  • NAM is a well reported and widely used sirtuin inhibitor and has been recently shown to inhibit NAD+-consuming activities in vivo.

    “NAM, in contrast, is a well reported and widely used sirtuin inhibitor31 and has been recently shown to inhibit NAD+-consuming activities in vivo24.”
  • In response to calorie restriction, the yeast NAD biosynthetic gene PNC1, which catalyses the first and rate-limiting step in NAD+ biosynthesis, is induced.

    “In response to calorie restriction, the yeast NAD biosynthetic gene that catalyses the first and rate-limiting step in NAD+ biosynthesis, PNC1, is induced46.”
  • The resulting NAD+ availability increases SIR2 activity, which boosts mitochondrial respiration and suppresses recombinant DNA recombination, a known cause of ageing in yeast.

    “The resulting availability of NAD+ increases SIR2 activity, which boosts mitochondrial respiration and suppresses recombinant DNA recombination11,46, a known cause of ageing in yeast47.”
  • Upregulation of the NAD salvage pathway extends lifespan and mimics caloric restriction in yeast cells.

    “The upregulation of the NAD salvage pathway, which recycles NAD+ from nicotinamide, was first shown to extend lifespan and mimic caloric restriction in yeast cells46.”

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Authors
Anderson, R. M., Bitterman, K. J., Wood, J. G., Medvedik, O., & Sinclair, D. A.
Affiliations
Harvard University (US)
Corresponding author
Sinclair, David A.
Venue
Nature
Published
2003-05
Volume
423
Issue
6936
Pages
181-185
ISSN
  • 0028-0836 (ISSN-L)
  • 1476-4687
OpenAlex
W2006806054
Cited by
736
References
30
Citations by year
2026: 18 · 2025: 17 · 2024: 11 · 2023: 10 · 2022: 26 · 2021: 18 · 2020: 24 · 2019: 23 · 2018: 30 · 2017: 26 · 2016: 29 · 2015: 35 · 2014: 30 · 2013: 24 · 2012: 39
FWCI
13.20
Type
journal article
Language
en
Open access
Locations
  • Nature (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
  • RePEc: Research Papers in Economics (submittedVersion)
Funders
  • National Institute on Aging (R37AG028730, P01AG027916, R01AG028730, R01AG019719, R01AG019972)
  • National Institute of General Medical Sciences (R01GM068072)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Aging › Genetics, Aging, and Longevity in Model Organisms
  • Health Sciences › Medicine › Geriatrics and Gerontology › Sirtuins and Resveratrol in Medicine
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Fungal and yeast genetics research
Keywords
caloric restriction, lifespan extension, nicotinamide, Sir2, SIRT1, NAD+-dependent histone deacetylase, longevity genes, Saccharomyces cerevisiae, aging
MeSH terms
Cell Nucleus, Cytoplasm, Energy Metabolism, Histone Deacetylases, Longevity, NAD, Niacin, Nicotinamidase, Niacinamide, Saccharomyces cerevisiae, Gene Expression Regulation, Fungal, Heat-Shock Response, Gene Silencing, Saccharomyces cerevisiae Proteins, Caloric Restriction, Sirtuins, Silent Information Regulator Proteins, Saccharomyces cerevisiae, Sirtuin 2

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