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Pathophysiology of chaperone-mediated autophagy
Ashish Massey1, Roberta Kiffin, Ana Maria Cuervo
1Department of Anatomy and Structural Biology, Marion Bessin Liver Research Center, Albert Einstein College of Medicine, Ullmann Building Room 614, 1300 Morris Park Avenue, Bronx, NY 10461, USA.
The International Journal of Biochemistry & Cell Biology
|August 25, 2004
Summary
Chaperone-mediated autophagy (CMA) selectively degrades cytosolic proteins in lysosomes. This review explores CMA
Area of Science:
- Cellular Biology
- Molecular Biology
- Biochemistry
Background:
- Lysosomal degradation was traditionally viewed as occurring "in bulk".
- Over 20 years ago, evidence emerged for selective degradation of cytosolic proteins in lysosomes.
- This process is now identified as chaperone-mediated autophagy (CMA).
Purpose of the Study:
- To review the unique intracellular functions of chaperone-mediated autophagy (CMA).
- To compare CMA's characteristics with other forms of autophagy.
- To discuss the significance of altered CMA activity in aging and disease.
Main Methods:
- Literature review of studies on chaperone-mediated autophagy (CMA).
- Analysis of identified CMA substrates and components.
- Synthesis of current understanding of CMA regulation and physiological roles.
Main Results:
- Significant progress has been made in understanding chaperone-mediated autophagy (CMA) over the past two decades.
- New substrates and components in both cytosol and lysosomes have been identified.
- Insights into CMA regulation have shaped our understanding of its physiological roles.
Conclusions:
- Chaperone-mediated autophagy (CMA) plays distinct intracellular roles due to its selective nature.
- Understanding CMA's functions is crucial for comprehending aging processes.
- Dysregulation of CMA is relevant to various pathological conditions.