Cited by 631Autophagy in Disease and TherapyCellular transport and secretionAmyotrophic Lateral Sclerosis Research

The DOI matches its Crossref record; 62 of the 62 references it cites were found in a registry or an index.

Functional multivesicular bodies are required for autophagic clearance of protein aggregates associated with neurodegenerative disease

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Abstract

The endosomal sorting complexes required for transport (ESCRTs) are required to sort integral membrane proteins into intralumenal vesicles of the multivesicular body (MVB). Mutations in the ESCRT-III subunit CHMP2B were recently associated with frontotemporal dementia and amyotrophic lateral sclerosis (ALS), neurodegenerative diseases characterized by abnormal ubiquitin-positive protein deposits in affected neurons. We show here that autophagic degradation is inhibited in cells depleted of ESCRT subunits and in cells expressing CHMP2B mutants, leading to accumulation of protein aggregates containing ubiquitinated proteins, p62 and Alfy. Moreover, we find that functional MVBs are required for clearance of TDP-43 (identified as the major ubiquitinated protein in ALS and frontotemporal lobar degeneration with ubiquitin deposits), and of expanded polyglutamine aggregates associated with Huntington's disease. Together, our data indicate that efficient autophagic degradation requires functional MVBs and provide a possible explanation to the observed neurodegenerative phenotype seen in patients with CHMP2B mutations.

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  1. 1993, Eur. J. Cell Biol., 61, 54
  2. 2006, Am. J. Med. Genet. B. Neuropsychiatr. Genet., 141, 944
  3. 2007, Nat. Rev. Mol. Cell Biol., 8, 355

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Metadata

Authors
Filimonenko, M., Stuffers, S., Raiborg, C., Yamamoto, A., Malerød, L., Fisher, E. M. C., Isaacs, A., Brech, A., Stenmark, H., & Simonsen, A.
Affiliations
  • University of Oslo (NO)
  • Columbia University (US)
  • University College London (GB)
  • MRC Prion Unit (GB)
Corresponding author
Simonsen, Anne
Venue
The Journal of Cell Biology
Published
2007-11-05
Volume
179
Issue
3
Pages
485-500
ISSN
  • 0021-9525 (ISSN-L)
  • 1540-8140
OpenAlex
W2103275390
Cited by
626
References
62
Citations by year
2026: 13 · 2025: 26 · 2024: 20 · 2023: 15 · 2022: 18 · 2021: 35 · 2020: 29 · 2019: 27 · 2018: 41 · 2017: 31 · 2016: 46 · 2015: 34 · 2014: 43 · 2013: 36 · 2012: 40
FWCI
29.80
Type
journal article
Language
en
Open access
Locations
  • The Journal of Cell Biology (publishedVersion)
  • PubMed Central (publishedVersion, cc-by-nc-sa)
  • PubMed (publishedVersion)
  • UCL Discovery (University College London) (submittedVersion)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Autophagy in Disease and Therapy
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Cellular transport and secretion
  • Health Sciences › Medicine › Clinical Neurology › Amyotrophic Lateral Sclerosis Research
Keywords
multivesicular bodies, ESCRT, CHMP2B, autophagy, protein aggregates, neurodegenerative diseases, TDP-43, polyglutamine aggregates, Huntington's disease, amyotrophic lateral sclerosis, frontotemporal dementia, p62, ESCRT-III
MeSH terms
Autophagy, Cell Membrane, HeLa Cells, Humans, Huntington Disease, Models, Biological, Mutation, Nerve Tissue Proteins, Neurons, Phenotype, Protein Binding, Endosomes, Neurodegenerative Diseases, Ubiquitin, Endosomal Sorting Complexes Required for Transport

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