Aging as an event of proteostasis collapse

Area of Science:

• Cellular Biology
• Neuroscience
• Gerontology

Background:

• Cellular aging is characterized by the accumulation of damaged proteins due to declining protein homeostasis (proteostasis).
• This decline in proteostasis contributes to reduced cellular viability and the pathogenesis of protein misfolding diseases, including Alzheimer's and Huntington's disease.
• Metabolic signaling pathways are key regulators of the aging process.

Purpose of the Study:

• To explore how metabolic signaling pathways influence cellular proteostasis during aging.
• To identify potential therapeutic targets for preventing and treating age-associated protein misfolding diseases.

Main Methods:

• The study reviews existing literature on aging, proteostasis, and metabolic signaling.
• It analyzes the roles of insulin/IGF-1 signaling, dietary restriction, and mitochondrial function in modulating proteostasis.
• The focus is on understanding the interplay between metabolism and protein quality control in aging cells.

Main Results:

• Metabolic pathways significantly impact the proteostasis machinery in aging cells.
• Interventions like dietary restriction and modulation of insulin/IGF-1 signaling can enhance proteostasis.
• Mitochondrial function plays a crucial role in maintaining protein health during aging.

Conclusions:

• Metabolic signaling pathways offer promising therapeutic targets for combating age-related protein misfolding diseases.
• Maintaining youthful proteostasis through metabolic interventions could prevent or delay diseases like Alzheimer's and Huntington's.
• Targeting these pathways may improve cellular viability and healthspan.