Emerging role of sirtuins on tumorigenesis: possible link between aging and cancer
1Department of Life Science, Ewha Womans University, Seoul 120-750, Korea kimhs0601@ewha.ac.kr.
Abstract:
Aging is the strongest risk factor for cancer development, suggesting that molecular crosstalks between aging and tumorigenesis exist in many cellular pathways. Recently, Sirtuins (Sirt1-7), the mammalian homologues of aging-related sir2α in yeast, have been shown to modulate several major cellular pathways, such as DNA repair, inflammation, metabolism, cell death, and proliferation in response to diverse stresses, and may serve as a possible molecular link between aging and tumorignenesis. In addition, growing evidence suggests that sirtuins are directly implicated in the development of cancer, and they can act as either a tumor suppressor or promoter, depending on the cellular context and tumor types. While the functions of Sirt1 in tumorigenesis have been reported and reviewed in many studies, the connection between sirtuins 2-7 and the development of cancer is less established. Thus, this review will present the recent updates on the emerging roles of Sirt2-7 members in carcinogenesis.
Insights
Aging and cancer are linked through molecular pathways. This review focuses on Sirtuins 2-7, exploring their emerging roles in cancer development beyond the well-studied Sirtuin 1.
Area of Science:
- Molecular biology
- Gerontology
- Oncology
Background:
- Aging is the primary risk factor for cancer, indicating shared molecular pathways.
- Sirtuins (Sirt1-7) are key regulators of cellular processes implicated in aging and cancer.
- While Sirtuin 1's role in cancer is documented, the functions of Sirtuins 2-7 remain less understood.
Purpose of the Study:
- To review the emerging roles of Sirtuins 2-7 in carcinogenesis.
- To highlight the potential of Sirtuins 2-7 as molecular links between aging and cancer.
Main Methods:
- Literature review of recent studies on Sirtuins 2-7 and cancer.
- Analysis of Sirtuin involvement in cellular pathways relevant to tumorigenesis.
Main Results:
- Sirtuins 2-7 modulate critical cellular pathways including DNA repair, metabolism, and proliferation.
- Evidence suggests Sirtuins 2-7 can act as either tumor suppressors or promoters depending on context.
- These sirtuins represent a significant, yet understudied, area in aging and cancer research.
Conclusions:
- Sirtuins 2-7 play crucial, context-dependent roles in cancer development.
- Further research into Sirtuins 2-7 is essential for understanding the aging-cancer axis.
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