Chromosomal instability and pro-inflammatory response in aging.

Area of Science:

• Gerontology
• Cell Biology
• Genetics

Background:

• Aging involves tissue deterioration and the accumulation of senescent cells.
• Senescent cells exhibit aneuploidy and a secretory phenotype (SASP).
• Cytoplasmic DNA from faulty mitosis contributes to senescence and SASP.

Purpose of the Study:

• To review the link between chromosomal instability (CIN) and senescence in aging.
• To emphasize the role of the cGAS-STING pathway in SASP development.
• To propose CIN inhibition as an anti-aging strategy.

Main Methods:

• Literature review focusing on CIN, senescence, and aging.
• Analysis of the cGAS-STING pathway's role in SASP.
• Discussion of potential therapeutic interventions.

Main Results:

• Age-associated CIN in mitotically active cells contributes to aging.
• Aneuploid senescent cells are linked to aging-associated diseases.
• CIN drives SASP through pathways like cGAS-STING.

Conclusions:

• Chromosomal instability is a key driver of age-related cellular senescence.
• Inhibiting CIN could prevent aneuploid senescent cells.
• Targeting CIN offers a potential strategy to delay aging and associated diseases.