RNA and protein degradation in the aging process

Area of Science:

• Gerontology
• Molecular Biology
• Cellular Biology

Background:

• Aging is characterized by metabolic shifts, including reduced anabolism and increased catabolism.
• Age-related phenotypes like sarcopenia and anorexia result from metabolic imbalance.
• Cellular homeostasis is further compromised by disrupted RNA and protein degradation during aging.

Purpose of the Study:

• To review the role of RNA and protein degradation regulators in aging.
• To explore the molecular mechanisms behind the reprogramming of these degradation pathways.
• To highlight RNA and protein degradation as a key factor in senescence biology and therapeutic intervention.

Main Methods:

• Literature review focusing on molecular mechanisms of aging.
• Analysis of senescence-associated degradative reprogramming (SADR).
• Examination of regulatory pathways for RNA and protein degradation.

Main Results:

• Aging involves a selective disruption of RNA and protein degradation, termed Senescence-Associated Degradative Reprogramming (SADR).
• SADR leads to aberrant destabilization of specific transcripts and proteins, causing cellular dysfunction.
• Specific molecules are rapidly degraded, while others accumulate, disrupting cellular homeostasis.

Conclusions:

• RNA and protein degradation pathways are central to aging and senescence.
• Understanding SADR provides insights into age-related cellular dysfunction.
• Targeting RNA and protein degradation offers novel therapeutic avenues for aging and senescence.