Cited by 43Alzheimer's disease research and treatmentsNeuroinflammation and Neurodegeneration MechanismsDementia and Cognitive Impairment Research

Oligodendrocytes are a Novel Source of Amyloid Peptide Generation

Skaper, Stephen D., Evans, Nicholas A., Soden, Peter E., Rosin, Claudia, Facci, Laura, Richardson, Jill C.·2009·Neurochemical Research

Abstract

Alzheimer’s disease is characterised by regional neuronal degeneration, synaptic loss, and the progressive deposition of the 4 kDa β-amyloid peptide (Aβ) in senile plaques and accumulation of tau protein as neurofibrillary tangles. Aβ derives from the larger precursor molecule, amyloid precursor protein (APP) by proteolytic processing via β- and γ-secretases. While APP expression is well documented in neurons and astrocytes, the case for oligodendrocytes is less clear. The latter cell type is reported to express different isoforms of APP, and we have confirmed this observation by immunocytochemistry in cultures of differentiated rat cortical oligodendrocytes. Moreover, by means of a sensitive electrochemiluminescent immunoassay employing Aβ C-terminal specific antibodies, mature oligodendrocytes are shown to secrete the 40 and 42 amino acid Aβ species (Aβ40 and Aβ42). Secretion of Aβ peptides was reduced by incubating oligodendrocytes with α- and β-secretase inhibitors, or a γ-secretase inhibitor. Disturbances of APP processing and/ or synthesis in oligodendrocytes may account for some myelin disorders observed in Alzheimer's disease and other senile dementias.

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Crossref · 10.1007/s11064-009-0022-9

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Authors
Skaper, S. D., Evans, N. A., Soden, P. E., Rosin, C., Facci, L., & Richardson, J. C.
Affiliations
  • University of Padua (IT)
  • GlaxoSmithKline (United Kingdom) (GB)
Corresponding author
Skaper, Stephen D.
Venue
Neurochemical Research
Published
2009-06-26
Volume
34
Issue
12
Pages
2243-2250
ISSN
  • 0364-3190 (ISSN-L)
  • 1573-6903
OpenAlex
W2021746799
Cited by
43
References
73
Citations by year
2026: 2 · 2025: 5 · 2024: 6 · 2023: 8 · 2022: 1 · 2021: 2 · 2020: 2 · 2019: 1 · 2018: 2 · 2017: 1 · 2016: 2 · 2015: 2 · 2014: 3 · 2013: 1 · 2012: 1
FWCI
0.88
Type
journal article
Language
en
Open access
closed
Locations
  • Neurochemical Research (publishedVersion)
  • PubMed (publishedVersion)
Funders
Biotechnology and Biological Sciences Research Council (01/A4/C/07710)
Topics
  • Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
  • Life Sciences › Neuroscience › Neurology › Neuroinflammation and Neurodegeneration Mechanisms
  • Health Sciences › Medicine › Psychiatry and Mental health › Dementia and Cognitive Impairment Research
Keywords
oligodendrocytes, amyloid-beta, Alzheimer's disease, amyloid precursor protein, APP isoforms, APP processing, secretase inhibitors, gamma-secretase, myelin disorders, amyloid plaques, neurofibrillary tangles
MeSH terms
Alzheimer Disease, Animals, Oligodendroglia, Peptide Fragments, Thiazines, Amyloid beta-Peptides, Amyloid beta-Protein Precursor, Rats, Amyloid Precursor Protein Secretases

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