sirtuin

(redirected from Sirtuins)
Also found in: Medical.
Related to Sirtuins: resveratrol

sir·tu·in

 (sûr′to͞o-ĭn, -tyo͞o-)
n.
Any of a family of enzymes that occur in all living organisms and are thought to regulate cellular aging, apoptosis, and resistance to stress in more complex eukaryotic organisms.

[Alteration of Sir2, name of the first gene coding for the synthesis of such enzymes to be isolated (short for s(ilent mating-type) i(nformation) r(egulation) 2, so called because the gene silences the expression of genes relating to the two mating types of the yeast from which it was isolated ) + -in.]

sirtuin

(sɜːˈtuːɪn)
n
a protein that regulates cell metabolism and ageing
References in periodicals archive ?
The findings suggest that this compound, which appears to stimulate a pathway that involves longevity-linked proteins known as sirtuins, could help protect the gut from age-related damage, the researchers say.
Sirtuins are a class of proteins with nicotinamide adenine dinucleotidedependent deacetylase and adenosine diphosphate (ADP) ribosyl transferase activity.
There is a cascade effect when you take NMN that produces NAD, that renews DNA, and RNA, that renews proteins like sirtuins, that support your cells and DNA, and so on and so on.
The RNA polymerase cannot bind to DNA and gene expression will be inhibited or silenced (Sirtuins are human enzymes analog to the Silent Information Regulation 2 -SIR 2 - proteins of yeast).
That's because resveratrol promotes expression of cell proteins called sirtuins that protect against age-related decline.
Cellular redox activity is a normal mechanism of the male and female reproductive system but its inequilibrium affects the fertility by hindering attainment and maintenance of oocyte developmental potential during in vivo processes.2 OS is a multifactorial process that implicates several different outcomes especially the oocyte maturation with its impact on fertility irrespective of female previous health, genetic predisposition as well as environmental condition.3 Sirtuins (silent information regulator, SIRT), a family of Nicotinamide Adenine Dinucleotide (NAD) dependent enzymes is evolving as main regulators of OS.
Sirtuins are enzymes regulating the expression of genes that control the function of cells through key cellular signalling pathways.
NAD+ is required for activation of enzymes called sirtuins, which are largely credited with the beneficial effects of calorie restriction.
Sirtuins are associated with a variety of biological processes.
Guarente, "Sirtuins in aging and disease," Cold Spring Harbor Symposia on Quantitative Biology, vol.
Objective: Sirtuins (SIRTs) play a prominent role in metabolism, apoptosis, aging, inflammation, and epigenetics.