Cited by 153Lysosomal Storage Disorders ResearchParkinson's Disease Mechanisms and TreatmentsAutophagy in Disease and Therapy

Mutant glucocerebrosidase impairs α-synuclein degradation by blockade of chaperone-mediated autophagy

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Kuo, Sheng-Han, Tasset, Inmaculada, Cheng, Melody M., Diaz, Antonio, Pan, Ming-Kai, Lieberman, Ori J., Hutten, Samantha J., Alcalay, Roy N. +15 more·2022·Science Advances

Abstract

The most common genetic risk factors for Parkinson’s disease (PD) are a set of heterozygous mutant (MT) alleles of the GBA1 gene that encodes β-glucocerebrosidase (GCase), an enzyme normally trafficked through the ER/Golgi apparatus to the lysosomal lumen. We found that half of the GCase in lysosomes from postmortem human GBA-PD brains was present on the lysosomal surface and that this mislocalization depends on a pentapeptide motif in GCase used to target cytosolic protein for degradation by chaperone-mediated autophagy (CMA). MT GCase at the lysosomal surface inhibits CMA, causing accumulation of CMA substrates including α-synuclein. Single-cell transcriptional analysis and proteomics of brains from GBA-PD patients confirmed reduced CMA activity and proteome changes comparable to those in CMA-deficient mouse brain. Loss of the MT GCase CMA motif rescued primary substantia nigra dopaminergic neurons from MT GCase–induced neuronal death. We conclude that MT GBA1 alleles block CMA function and produce α-synuclein accumulation.

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Crossref · 10.1126/sciadv.abm6393

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  • Lysosomal membranes are particularly enriched in sphingolipids.

    “Lysosomal membranes are particularly enriched in sphingolipids.”

    From The lysosome and proteostatic stress at the intersection of pediatric neurological disorders and adult neurodegenerative diseases (2025) · cites this paper as [94]

    The Results sections on lysosomal trafficking and GCase localization discuss lysosomal membranes but do not describe their sphingolipid content. Searches for “sphingolipid” and lysosomal membrane lipid composition found no passage supporting the claimed enrichment; page numbers were unavailable in our copy. (LLM, conf=0.72)

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  • With aging, the relative balance of sphingolipids is disrupted, with certain species, such as short-chain ceramide, being relatively increased in aging and sphingomyelin being relatively reduced.

    “With aging, the relative balance of sphingolipids is disrupted, with certain species, such as short-chain ceramide, being relatively increased in aging and sphingomyelin being relatively reduced.94”

    From The lysosome and proteostatic stress at the intersection of pediatric neurological disorders and adult neurodegenerative diseases (2025) · cites this paper as [94]

    The Discussion (page unavailable) links aging to declines in chaperone-mediated autophagy and macroautophagy, not to a changing balance of sphingolipids. Searches for short-chain ceramide and sphingomyelin found no passage reporting that ceramide increases or sphingomyelin decreases with age. (LLM, conf=0.77)

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Authors
Kuo, S.-H., Tasset, I., Cheng, M. M., Diaz, A., Pan, M.-K., Lieberman, O. J., Hutten, S. J., Alcalay, R. N., Kim, S., Ximénez-Embún, P., Fan, L., Kim, D., Ko, H. S., Yacoubian, T., Kanter, E., Liu, L., Tang, G., Muñoz, J., Sardi, S. P., Li, A., Gan, L., Cuervo, A. M., & Sulzer, D.
Affiliations
  • Columbia University (US)
  • Albert Einstein College of Medicine (US)
  • Department of Developmental and Molecular Biology, Albert Einstein College of Medicine, Bronx, NY 10461, USA.
  • National Taiwan University Hospital (TW)
  • Johns Hopkins University (US)
  • Proteomics Unit, Spanish National Cancer Research Centre (CNIO), ProteoRed-ISCIII, Madrid, Spain.
  • Weill Cornell Medicine (US)
  • University of Alabama at Birmingham (US)
  • Ikerbasque (ES)
  • Sanofi Genzyme, Boston, MA 02134, USA.
  • New York State Psychiatric Institute (US)
Corresponding author
  • Kuo, Sheng-Han
  • Tasset, Inmaculada
  • Sulzer, David
Venue
Science Advances
Published
2022-02-11
Volume
8
Issue
6
Pages
eabm6393-eabm6393
ISSN
2375-2548 (ISSN-L)
OpenAlex
W4211247359
Cited by
153
References
50
Citations by year
2026: 21 · 2025: 32 · 2024: 45 · 2023: 29 · 2022: 26
FWCI
20.59
Type
journal article
Language
en
Open access
Licence
cc-by-nc
Locations
  • Science Advances (publishedVersion, cc-by-nc)
  • PubMed Central (publishedVersion, cc-by-nc)
  • PubMed (publishedVersion)
Funders
  • National Institute on Aging (P01AG031782, P30AG038072)
  • National Institute of Mental Health (K01MH096956)
  • National Institute on Drug Abuse (R01DA007418)
  • National Institute of General Medical Sciences (T32GM007367)
  • National Institute of Neurological Disorders and Stroke (R01NS118179, R01NS104423, R01NS095435, K08NS083738, R01NS124854, R01NS104390)
Topics
  • Health Sciences › Medicine › Physiology › Lysosomal Storage Disorders Research
  • Health Sciences › Medicine › Neurology › Parkinson's Disease Mechanisms and Treatments
  • Health Sciences › Medicine › Epidemiology › Autophagy in Disease and Therapy
Keywords
glucocerebrosidase, GBA mutations, Parkinson's disease, chaperone-mediated autophagy, alpha-synuclein accumulation, lysosomal protein degradation, protein mislocalization, dopaminergic neurons, substantia nigra, single-cell transcriptomics
MeSH terms
Chaperone-Mediated Autophagy, Animals, Glucosylceramidase, Humans, Mutation, Parkinson Disease, Mice, alpha-Synuclein

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