Metabolic features and regulation in cell senescence

Area of Science:

• Gerontology
• Cellular Biology
• Metabolism

Background:

• Organismal aging involves metabolic alterations, senescent cell accumulation, and disease onset.
• Cellular senescence's metabolic features are linked to organismal metabolic changes and age-associated diseases, particularly metabolic syndromes.
• A clear understanding of senescent cell metabolic characteristics is lacking.

Purpose of the Study:

• To review key metabolic features and regulators of cellular senescence.
• To explore the link between senescence metabolism and aging.
• To discuss the role of metabolic regulators in modulating senescence.

Main Methods:

• Literature review focusing on mitochondrial dysfunction and anabolic deregulation in senescence.
• Analysis of the mechanistic involvement of metabolic regulators.
• Discussion of senescence phenotypes and aging.

Main Results:

• Cellular senescence exhibits distinct metabolic features, including mitochondrial dysfunction and anabolic deregulation.
• These metabolic alterations are linked to other senescence phenotypes and the aging process.
• Metabolic regulators mTOR, AMPK, and GSK3 are identified as key players in modulating senescence.

Conclusions:

• Metabolic alterations are central to cellular senescence and its contribution to aging.
• Mitochondrial dysfunction and anabolic deregulation are key metabolic hallmarks of senescence.
• mTOR, AMPK, and GSK3 act as crucial metabolic switches in senescence modulation.