The Immune System and Cellular Senescence: A Complex Interplay in Aging and Disease

Area of Science:

• Immunology
• Gerontology
• Cellular Biology

Background:

• Immunosenescence is immune system deterioration with aging.
• Cellular senescence involves cell cycle arrest due to stress.
• Both impact innate and adaptive immunity, leading to age-related diseases.

Purpose of the Study:

• To review the interplay between the immune system and senescent cells.
• To dissect immune dysfunction during aging (immunosenescence).
• To explore therapeutic targets for healthier aging.

Main Methods:

• Literature review of immunosenescence and cellular senescence.
• Analysis of immune system changes with age.
• Discussion of therapeutic interventions.

Main Results:

• Immunosenescence features include T-cell dysfunction, thymic involution, B cell aging, inflammaging, and metabolic dysregulation.
• Immune cell decline contributes to age-related diseases.
• Targeting immunosenescence offers potential for healthier aging.

Conclusions:

• Restoring youthful immune function can alleviate age-related diseases.
• Programmed Death-Ligand 1 (PD-L1) is a promising therapeutic target.
• Interventions targeting immunosenescence can promote longevity.