The sirtuin family in cancer

Area of Science:

• Biochemistry
• Molecular Biology
• Oncology

Background:

• Sirtuins are NAD+-dependent protein deacylases and ADP-ribosyl-transferases with crucial roles in metabolism and aging.
• Seven mammalian sirtuin paralogs exist, each with distinct cellular functions and targets.
• Sirtuins are implicated in cancer development, with significant research on their roles and pharmacological modulation.

Purpose of the Study:

• To comprehensively review the evidence linking each sirtuin paralog to cancer development.
• To analyze the impact of sirtuin modulation on cancer initiation and progression.
• To evaluate sirtuins as potential targets for cancer prevention and therapy.

Main Methods:

• Systematic review of existing literature on sirtuins and cancer.
• Analysis of data from mouse models and human studies.
• Evaluation of pharmacological and genetic modulation studies.

Main Results:

• Sirtuin involvement in cancer is complex, with varied roles depending on the specific paralog and context.
• Modulating sirtuins after tumor initiation yields unpredictable results across most cancer types.
• Evidence suggests sirtuin activation prior to tumor initiation can be a potent cancer preventive strategy.

Conclusions:

• The timing of sirtuin modulation is critical in cancer development.
• Targeting sirtuins for cancer prevention shows promise.
• Further research is needed to elucidate specific sirtuin functions in different cancer types for therapeutic development.