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Updated: Mar 23, 2026

Deacetylation Assays to Unravel the Interplay between Sirtuins SIRT2 and Specific Protein-substrates
Published on: February 27, 2016
Using mitochondrial sirtuins as drug targets: disease implications and available compounds
Melanie Gertz1,2, Clemens Steegborn3
1Department of Biochemistry, University of Bayreuth, Universitätsstr. 30, 95447, Bayreuth, Germany.
Abstract:
Sirtuins are an evolutionary conserved family of NAD(+)-dependent protein lysine deacylases. Mammals have seven Sirtuin isoforms, Sirt1-7. They contribute to regulation of metabolism, stress responses, and aging processes, and are considered therapeutic targets for metabolic and aging-related diseases. While initial studies were focused on Sirt1 and 2, recent progress on the mitochondrial Sirtuins Sirt3, 4, and 5 has stimulated research and drug development for these isoforms. Here we review the roles of Sirtuins in regulating mitochondrial functions, with a focus on the mitochondrially located isoforms, and on their contributions to disease pathologies. We further summarize the compounds available for modulating the activity of these Sirtuins, again with a focus on mitochondrial isoforms, and we describe recent results important for the further improvement of compounds. This overview illustrates the potential of mitochondrial Sirtuins as drug targets and summarizes the status, progress, and challenges in developing small molecule compounds modulating their activity.
Insights
Mitochondrial sirtuins (Sirt3-5) are key regulators of cellular metabolism and aging. This review highlights their roles in disease and discusses small molecules for therapeutic development.
Area of Science:
- Biochemistry
- Molecular Biology
- Gerontology
Background:
- Sirtuins are NAD(+)-dependent protein lysine deacylases crucial for metabolism, stress response, and aging.
- Mammalian sirtuins (Sirt1-7) regulate diverse cellular processes.
- Recent focus on mitochondrial sirtuins (Sirt3-5) has spurred therapeutic research.
Purpose of the Study:
- To review the role of sirtuins, particularly mitochondrial isoforms, in regulating mitochondrial function.
- To examine the contribution of mitochondrial sirtuins to disease pathologies.
- To summarize available compounds for modulating mitochondrial sirtuin activity and discuss future drug development.
Main Methods:
- Literature review of sirtuin research, focusing on mitochondrial isoforms.
- Analysis of studies on sirtuin involvement in metabolic and aging-related diseases.
- Compilation of data on small molecule modulators of sirtuin activity.
Main Results:
- Mitochondrial sirtuins (Sirt3-5) play critical roles in mitochondrial homeostasis and cellular health.
- Dysregulation of these sirtuins is implicated in various disease states.
- Several compounds targeting mitochondrial sirtuins show promise for therapeutic intervention.
Conclusions:
- Mitochondrial sirtuins represent significant therapeutic targets for metabolic and aging-related diseases.
- Ongoing research and drug development are advancing the potential of small molecule modulators.
- Further improvements in compound design are crucial for effective therapeutic strategies.
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