Sirtuin inhibitors

  • Alcaín F
  • Villalba J
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The sirtuin family of deacetylase enzymes comprises seven proteins (SIRT1-7) that are dependent on NAD(+) for their activity. Three proteins are located in the nucleus, three in the mitochondria and only one is predominantly cytoplasmic. Caloric restriction and oxidative stress generally up-regulate their expression. SIRT1, the orthologue of yeast Sir2, is the mammalian sirtuin that has been most extensively studied to date. Among other targets, SIRT1 down-regulates the activity of the nuclear transcription factor p53, being this related with an increase in lifespan and cell survival associated to stress resistance.

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  • Francisco J Alcaín

  • José M Villalba

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