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RESEARCH PRODUCT

Free [NADH]/[NAD+] regulates sirtuin expression

Jesús A.f. TresguerresSoraya L. VallesJose ViñaManuel SerranoMa Carmen Gómez-cabreraDaniel HerranzFederico PallardóRaúl López-gruesoVladimir E. Martínez-belloConsuelo BorrásJuan Gambini

subject

MaleMetaboliteBiophysicsBiochemistryMicechemistry.chemical_compoundPhysical Conditioning AnimalPyruvic AcidAnimalsSirtuinsLactic AcidRNA MessengerRats WistarEthanol metabolismMolecular BiologyCells CulturedGlyceraldehyde 3-phosphate dehydrogenaseRegulation of gene expressionMessenger RNAEthanolbiologyFibroblastsNADPeroxisome Proliferator-Activated Receptor Gamma Coactivator 1-alphaRatsCell biologyDrosophila melanogasterGlycerol-3-phosphate dehydrogenaseGene Expression RegulationchemistryBiochemistrySirtuinNIH 3T3 CellsTrans-Activatorsbiology.proteinNAD+ kinaseOxidation-ReductionTranscription Factors

description

Sirtuins are deacetylases involved in metabolic regulation and longevity. Our aim was to test the hypothesis that they are subjected to redox regulation by the [NADH]/[NAD(+)] ratio. We used NIH3T3 fibroblasts in culture, Drosophila fed with or without ethanol and exercising rats. In all three models an increase in [NADH]/[NAD(+)] came up with an increased expression of sirtuin mRNA and protein. PGC-1α (a substrate of sirtuins) protein level was significantly increased in fibroblasts incubated with lactate and pyruvate but this effect was lost in fibroblasts obtained from sirtuin-deficient mice. We conclude that the expression of sirtuins is subject to tight redox regulation by the [NADH]/[NAD(+)] ratio, which is a major sensor for metabolite availability conserved from invertebrates to vertebrates.

yearjournalcountryeditionlanguage
2011-08-01Archives of Biochemistry and Biophysics
https://doi.org/10.1016/j.abb.2011.04.020