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Updated: Jun 8, 2026

Deacetylation Assays to Unravel the Interplay between Sirtuins (SIRT2) and Specific Protein-substrates
Published on: February 27, 2016
Sirtuin-targeting drugs: Mechanisms of action and potential therapeutic applications
Ahmad Aljada1, Lynn Dong, Shaker A Mousa
1Long Island University, Department of Biomedical Sciences, Brookville, NY 11548, USA.
Abstract:
The sirtuins are NAD+-dependent histone/protein deacetylases that are similar to Saccharomyces cerevisiae silent information regulator 2 (Sir2). Sirtuins regulate various normal and abnormal cellular and metabolic processes, including tumorigenesis, neurodegeneration, and processes associated with type 2 diabetes and obesity. Several age-related diseases, such as Alzheimer's disease, and longevity have also been linked to the functions of sirtuins. A thorough understanding of the mechanisms of action of the sirtuins may therefore yield novel therapeutic strategies targeting these processes; several small-molecule and naturally occurring inhibitors and activators of these enzymes have been identified. This review describes the mechanisms regulating sirtuin activity, as well as how these modes of regulation may be exploited to manipulate activity in the context of various pathological states (ie, metabolic diseases, cancer and neurodegenerative diseases). The possible metabolic outcomes of the pharmacological manipulation of sirtuins are also discussed.
Insights
Sirtuins, NAD+-dependent deacetylases, regulate key cellular processes like metabolism and neurodegeneration. Understanding sirtuin mechanisms may lead to new therapies for diseases including cancer and Alzheimer's.
Area of Science:
- Biochemistry
- Molecular Biology
- Cellular Biology
Background:
- Sirtuins are NAD+-dependent histone/protein deacetylases homologous to yeast Sir2.
- They play crucial roles in regulating diverse cellular and metabolic processes.
- Dysregulation of sirtuin activity is implicated in tumorigenesis, neurodegeneration, type 2 diabetes, obesity, and aging.
Purpose of the Study:
- To review the regulatory mechanisms governing sirtuin activity.
- To explore how sirtuin activity can be manipulated for therapeutic benefit in pathological conditions.
- To discuss the metabolic consequences of pharmacological sirtuin modulation.
Main Methods:
- Literature review of sirtuin research.
- Analysis of known sirtuin activators and inhibitors.
- Discussion of pathological states linked to sirtuin function.
Main Results:
- Sirtuins are involved in fundamental cellular functions and disease pathways.
- Numerous small-molecule and natural compounds modulate sirtuin activity.
- Understanding regulatory mechanisms offers therapeutic potential.
Conclusions:
- Targeting sirtuin activity presents a promising avenue for novel therapeutic strategies.
- Pharmacological manipulation of sirtuins could impact metabolic diseases, cancer, and neurodegenerative disorders.
- Further research into sirtuin regulation is warranted for clinical applications.
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