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Related Experiment Video

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Quantifying Tissue-Specific Proteostatic Decline in Caenorhabditis elegans

Quantifying Tissue-Specific Proteostatic Decline in Caenorhabditis elegans

Published on: September 7, 2021

The proteostasis network and its decline in ageing.

Mark S Hipp¹, Prasad Kasturi¹, F Ulrich Hartl²

¹Max Planck Institute of Biochemistry, Department of Cellular Biochemistry, Martinsried, Germany.

Nature Reviews. Molecular Cell Biology

|February 9, 2019

Summary

Aging impairs protein homeostasis (proteostasis), leading to protein aggregates and neurodegenerative diseases like Alzheimer's. Enhancing proteostasis networks may delay age-related diseases and extend healthspan.

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Area of Science:

Cellular Biology
Neuroscience
Gerontology

Background:

Aging is a primary risk factor for neurodegenerative diseases, including Alzheimer and Parkinson diseases.
A key feature of aging is the decline in protein homeostasis (proteostasis), resulting in the accumulation of misfolded and aggregated proteins.
This proteostasis decline particularly impacts postmitotic cells like neurons, contributing to disease pathogenesis.

Purpose of the Study:

To explore the link between aging, proteostasis dysfunction, and age-related diseases.
To understand how cellular proteostasis networks decline during aging.
To identify strategies for improving proteostasis to combat age-related pathologies.

Main Methods:

Analysis of proteome-wide changes during the aging process.
Review of the molecular mechanisms underlying proteostasis network function and decline.
Examination of the consequences of protein aggregate accumulation in aging cells.

Main Results:

Aging compromises the capacity of the proteostasis network, leading to reduced proteome integrity.
Accumulation of misfolded and aggregated proteins is a significant consequence of impaired proteostasis in aging.
Proteome-wide analyses reveal critical changes associated with aging that impact cellular function.

Conclusions:

Restoring or augmenting proteostasis network capacity presents a promising therapeutic strategy.
Pharmacological interventions targeting proteostasis could delay the onset of age-related diseases.
Enhancing proteostasis holds potential for extending human healthspan by mitigating age-related proteome deterioration.