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Updated: Feb 26, 2026

Deacetylation Assays to Unravel the Interplay between Sirtuins SIRT2 and Specific Protein-substrates
Published on: February 27, 2016
Emerging Roles for SIRT5 in Metabolism and Cancer
Lauren R Bringman-Rodenbarger1, Angela H Guo1, Costas A Lyssiotis2
11 Department of Pathology, University of Michigan , Ann Arbor, Michigan.
Significance:
Developing evidence in the literature suggests that sirtuin 5 (SIRT5) may be involved in metabolic reprogramming, an emerging hallmark of cancer by which neoplastic cells reconfigure their metabolism to support the anabolic demands of rapid cell division. SIRT5 is one of the seven members of the nicotinamide adenine dinucleotide-dependent sirtuin family of lysine deacetylases. It removes succinyl, malonyl, and glutaryl groups from protein targets within the mitochondrial matrix and other subcellular compartments. SIRT5 substrates include a number of proteins integral to metabolism. Recent Advances: New work has begun to elucidate the roles of SIRT5 in glycolysis, tricarboxylic acid cycle, fatty acid oxidation, nitrogen metabolism, pentose phosphate pathway, antioxidant defense, and apoptosis.
Critical Issues:
In this study, we summarize biological functions of SIRT5 reported in normal tissues and in cancer and discuss potential mechanisms whereby SIRT5 may impact tumorigenesis, particularly focusing on its reported roles in metabolic reprogramming. Finally, we review current efforts to target SIRT5 pharmacologically.
Future Directions:
The biological significance of SIRT5 has been elucidated in the context of only an extremely small fraction of its targets and interactors. There is no doubt that further studies in this area will provide a wealth of insights into functions of SIRT5 and its targets in normal and neoplastic cells. Antioxid. Redox Signal. 28, 677-690.
Insights
Sirtuin 5 (SIRT5) plays a key role in cancer metabolic reprogramming by modifying proteins involved in cellular metabolism. Further research is needed to fully understand SIRT5
Area of Science:
- Biochemistry
- Molecular Biology
- Cancer Research
Background:
- Sirtuin 5 (SIRT5) is a NAD+-dependent lysine deacetylase.
- SIRT5 modifies protein targets involved in metabolism within mitochondria and other cellular compartments.
- Emerging evidence links SIRT5 to metabolic reprogramming, a hallmark of cancer.
Purpose of the Study:
- To summarize the biological functions of SIRT5 in normal and cancerous tissues.
- To discuss potential mechanisms of SIRT5's impact on tumorigenesis via metabolic reprogramming.
- To review current pharmacological strategies targeting SIRT5.
Main Methods:
- Literature review and synthesis of existing research on SIRT5.
- Analysis of SIRT5's role in key metabolic pathways.
- Discussion of SIRT5's implications in cancer development.
Main Results:
- SIRT5 is implicated in regulating glycolysis, the TCA cycle, fatty acid oxidation, and nitrogen metabolism.
- SIRT5 influences antioxidant defense and apoptosis.
- SIRT5's substrates and interactors are still not fully characterized.
Conclusions:
- SIRT5 is a significant regulator of metabolic reprogramming in cancer.
- Further investigation into SIRT5's functions and targets is crucial for understanding its role in normal and neoplastic cells.
- Targeting SIRT5 presents a potential therapeutic avenue in cancer treatment.
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