Misfolded GBA/β-glucocerebrosidase impairs ER-quality control by chaperone-mediated autophagy in Parkinson disease. Kuo, S., Tasset, I., Cuervo, A. M., & Sulzer, D. Autophagy, 18(12):3050–3052, December, 2022.
doi  abstract   bibtex   
Inhibition of chaperone-mediated autophagy (CMA), a selective type of lysosomal degradation for intracellular proteins, may contribute to pathogenesis in neurodegenerative diseases including Parkinson disease (PD). Pathogenic variants of PD-related proteins that reside in the cytosol, including SNCA/alpha-synuclein, LRRK2 (leucine rich repeat kinase 2), UCHL1 (ubiquitin Cterminal hydrolase 1) and VPS35 (VPS35 retromer complex component), exert inhibitory effects on CMA. Decreased CMA activity has also been reported in sporadic PD patients, consistent with an association between CMA inhibition and PD. We have now reported the first example of CMA dysfunction caused by a non-cytosolic PD-related protein, GBA/β-glucocerebrosidase, the most common genetic risk factor for PD, which uncovers a new role for CMA in endoplasmic reticulum (ER) quality control.
@article{kuo_misfolded_2022,
	title = {Misfolded {GBA}/β-glucocerebrosidase impairs {ER}-quality control by chaperone-mediated autophagy in {Parkinson} disease},
	volume = {18},
	issn = {1554-8635},
	doi = {10.1080/15548627.2022.2071383},
	abstract = {Inhibition of chaperone-mediated autophagy (CMA), a selective type of lysosomal degradation for intracellular proteins, may contribute to pathogenesis in neurodegenerative diseases including Parkinson disease (PD). Pathogenic variants of PD-related proteins that reside in the cytosol, including SNCA/alpha-synuclein, LRRK2 (leucine rich repeat kinase 2), UCHL1 (ubiquitin Cterminal hydrolase 1) and VPS35 (VPS35 retromer complex component), exert inhibitory effects on CMA. Decreased CMA activity has also been reported in sporadic PD patients, consistent with an association between CMA inhibition and PD. We have now reported the first example of CMA dysfunction caused by a non-cytosolic PD-related protein, GBA/β-glucocerebrosidase, the most common genetic risk factor for PD, which uncovers a new role for CMA in endoplasmic reticulum (ER) quality control.},
	language = {eng},
	number = {12},
	journal = {Autophagy},
	author = {Kuo, Sheng-Han and Tasset, Inmaculada and Cuervo, Ana Maria and Sulzer, David},
	month = dec,
	year = {2022},
	pmid = {35482760},
	pmcid = {PMC9673922},
	keywords = {Chaperone-Mediated Autophagy, Chaperones, ER quality control, Endoplasmic Reticulum, Glucosylceramidase, Humans, Lysosomes, Mutation, Parkinson Disease, Protein Folding, Quality Control, alpha-Synuclein, lysosomal enzymes, lysosomes, neurodegeneration, protein aggregation, protein trafficking, proteotoxicity},
	pages = {3050--3052},
}

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