Cited by 74Alzheimer's disease research and treatmentsPrion Diseases and Protein MisfoldingNeuroinflammation and Neurodegeneration Mechanisms

Amyloid-beta oligomers increase the localization of prion protein at the cell surface: PrPC trafficking and Alzheimer’s disease

Caetano, Fabiana A., Beraldo, Flavio H., Hajj, Glaucia N. M., Guimaraes, Andre L., Jürgensen, Sofia, Wasilewska-Sampaio, Ana Paula, Hirata, Pedro H. F., Souza, Ivana +8 more·2011·Journal of Neurochemistry

Abstract

In Alzheimer's disease, the amyloid-β peptide (Aβ) interacts with distinct proteins at the cell surface to interfere with synaptic communication. Recent data have implicated the prion protein (PrP(C)) as a putative receptor for Aβ. We show here that Aβ oligomers signal in cells in a PrP(C)-dependent manner, as might be expected if Aβ oligomers use PrP(C) as a receptor. Immunofluorescence, flow cytometry and cell surface protein biotinylation experiments indicated that treatment with Aβ oligomers, but not monomers, increased the localization of PrP(C) at the cell surface in cell lines. These results were reproduced in hippocampal neuronal cultures by labeling cell surface PrP(C). In order to understand possible mechanisms involved with this effect of Aβ oligomers, we used live cell confocal and total internal reflection microscopy in cell lines. Aβ oligomers inhibited the constitutive endocytosis of PrP(C), but we also found that after Aβ oligomer-treatment PrP(C) formed more clusters at the cell surface, suggesting the possibility of multiple effects of Aβ oligomers. Our experiments show for the first time that Aβ oligomers signal in a PrP(C)-dependent way and that they can affect PrP(C) trafficking, increasing its localization at the cell surface.

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Crossref · 10.1111/j.1471-4159.2011.07225.x

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80 of 80 references verified0 citation errors · 0 not checkable

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  • Aβ oligomers cause a rapid increase in surface exposure and clustering of PrPC in hippocampal neurons and cell lines.

    “Aβ oligomers were recently shown to cause a rapid increase in surface exposure and clustering of PrPC in hippocampal neurons and cell lines (Caetano et al., 2011).”
  • Initial ADDL binding recruits more PrPC molecules to form a higher order complex that may initiate toxic signaling at the neuronal membrane.

    “This suggests that initial ADDL binding recruits more PrPC molecules (presumably by exocytosis of vesicles located proximal to the plasma membrane; (Caetano et al., 2011)) to form a higher order complex that may initiate toxic signaling at”

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Authors
Caetano, F. A., Beraldo, F. H., Hajj, G. N. M., Guimaraes, A. L., Jürgensen, S., Wasilewska-Sampaio, A. P., Hirata, P. H. F., Souza, I., Machado, C. F., Wong, D. Y.-L., De Felice, F. G., Ferreira, S. T., Prado, V. F., Rylett, R. J., Martins, V. R., & Prado, M. A. M.
Affiliations
  • Universidade Federal de Minas Gerais (BR)
  • AC Camargo Hospital (BR)
  • Universidade Federal do Rio de Janeiro (BR)
  • Western University (CA)
Corresponding author
Prado, Marco A. M.
Venue
Journal of Neurochemistry
Publisher
Wiley
Published
2011-03-23
Volume
117
Issue
3
Pages
538-553
ISSN
0022-3042 (ISSN-L)
OpenAlex
W1500301897
Cited by
74
References
81
Citations by year
2024: 1 · 2023: 1 · 2022: 1 · 2021: 2 · 2020: 7 · 2019: 3 · 2018: 5 · 2017: 8 · 2016: 6 · 2015: 4 · 2014: 4 · 2013: 15 · 2012: 7
FWCI
7.85
Type
journal article
Language
en
Open access
closed
Locations
  • Journal of Neurochemistry (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Prion Diseases and Protein Misfolding
  • Life Sciences › Neuroscience › Neurology › Neuroinflammation and Neurodegeneration Mechanisms
Keywords
amyloid-beta oligomers, prion protein, cell surface localization, Alzheimer's disease, endocytosis, protein trafficking, synaptic dysfunction, hippocampal neurons
MeSH terms
Analysis of Variance, Animals, Cell Membrane, Cells, Cultured, Embryo, Mammalian, Flow Cytometry, Hippocampus, Humans, Neurons, Peptide Fragments, Time Factors, Transfection, Amyloid beta-Peptides, Microscopy, Confocal, PrPC Proteins, Biotinylation, rab5 GTP-Binding Proteins, Protein Transport, Mitogen-Activated Protein Kinase 3, Green Fluorescent Proteins, Mice

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