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Updated: Jun 22, 2025
Deacetylation Assays to Unravel the Interplay between Sirtuins SIRT2 and Specific Protein-substrates
Published on: February 27, 2016
The dual role of sirtuins in cancer: biological functions and implications
Lu Yu1, Yanjiao Li2, Siyuan Song3
1Department of Respiratory, Sichuan Academy of Medical Sciences and Sichuan Provincial People's Hospital, School of Medicine, University of Electronic Science and Technology of China, Chengdu, China.
Abstract:
Sirtuins are pivotal in orchestrating numerous cellular pathways, critically influencing cell metabolism, DNA repair, aging processes, and oxidative stress. In recent years, the involvement of sirtuins in tumor biology has garnered substantial attention, with a growing body of evidence underscoring their regulatory roles in various aberrant cellular processes within tumor environments. This article delves into the sirtuin family and its biological functions, shedding light on their dual roles-either as promoters or inhibitors-in various cancers including oral, breast, hepatocellular, lung, and gastric cancers. It further explores potential anti-tumor agents targeting sirtuins, unraveling the complex interplay between sirtuins, miRNAs, and chemotherapeutic drugs. The dual roles of sirtuins in cancer biology reflect the complexity of targeting these enzymes but also highlight the immense therapeutic potential. These advancements hold significant promise for enhancing clinical outcomes, marking a pivotal step forward in the ongoing battle against cancer.
Insights
Sirtuins (SIRTs) are key proteins involved in cell metabolism and aging. This review explores their complex roles in promoting or inhibiting various cancers, highlighting therapeutic potential.
Area of Science:
- Biochemistry
- Molecular Biology
- Oncology
Background:
- Sirtuins (SIRTs) are a conserved family of NAD+-dependent deacetylases and ADP-ribosyltransferases.
- They play critical roles in cellular metabolism, DNA repair, aging, and oxidative stress response.
- Emerging evidence highlights their significant involvement in tumor biology and cancer progression.
Purpose of the Study:
- To review the biological functions of the sirtuin family.
- To elucidate the dual roles of sirtuins as either promoters or inhibitors in various cancer types.
- To explore sirtuin-targeting anti-cancer agents and their interplay with miRNAs and chemotherapy.
Main Methods:
- Literature review of sirtuin functions in cellular pathways.
- Analysis of sirtuin involvement in oral, breast, hepatocellular, lung, and gastric cancers.
- Investigation of sirtuin-targeting agents and their interactions with miRNAs and chemotherapeutics.
Main Results:
- Sirtuins exhibit context-dependent roles, acting as either tumor promoters or suppressors.
- Their dysregulation is implicated in the aberrant cellular processes observed in tumor environments.
- Complex interactions exist between sirtuins, microRNAs (miRNAs), and conventional chemotherapeutic drugs.
Conclusions:
- Sirtuins present a complex but promising target for cancer therapy.
- Understanding the dual roles of sirtuins is crucial for developing effective anti-cancer strategies.
- Targeting sirtuins holds potential for improving clinical outcomes in cancer treatment.
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