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Updated: Mar 16, 2026
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Assessing Lysosomal Alkalinization in the Intestine of Live Caenorhabditis elegans
Published on: April 13, 2018
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Chaperone mediated autophagy in aging: Starve to prosper
Maria Xilouri1, Leonidas Stefanis2
1Center of Clinical Research, Experimental Surgery and Translational Research, Biomedical Research Foundation of the Academy of Athens, Athens, Greece.
Ageing Research Reviews
|August 4, 2016
Summary
Chaperone-mediated autophagy (CMA) is crucial for cellular health, but declines with age. Restoring CMA function may offer therapeutic benefits for age-related diseases.
Area of Science:
- Cellular Biology
- Molecular Biology
- Aging Research
Background:
- Cellular homeostasis relies on lysosomal proteolytic pathways, including macroautophagy, microautophagy, and chaperone-mediated autophagy (CMA).
- CMA uniquely targets proteins directly into lysosomes without vesicle formation, utilizing specific motifs and chaperone machinery.
- While active under basal conditions, CMA is upregulated by cellular stressors, but its efficiency decreases with aging.
Purpose of the Study:
- To review current knowledge on CMA's molecular components, regulation, and physiology.
- To examine the role of impaired CMA in cellular dysfunction and aging.
- To explore therapeutic strategies for restoring CMA in age-associated degenerative diseases.
Main Methods:
- Literature review of recent research on chaperone-mediated autophagy.
- Analysis of CMA's molecular mechanisms and physiological roles.
- Discussion of CMA's contribution to aging and neurodegeneration.
Main Results:
- CMA activity declines with age, leading to the accumulation of damaged proteins.
- Impaired CMA contributes to cellular dysfunction and reduced stress response during aging.
- Therapeutic restoration of CMA shows potential for treating age-related diseases.
Conclusions:
- CMA is vital for cellular proteostasis, particularly under stress.
- Age-related decline in CMA function is linked to degenerative processes.
- Targeting CMA presents a promising avenue for therapeutic intervention in aging populations.
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