Cited by 1,417Alzheimer's disease research and treatmentsNeuroinflammation and Neurodegeneration MechanismsDementia and Cognitive Impairment Research

Neurodegeneration induced by beta-amyloid peptides in vitro: the role of peptide assembly state

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Pike, CJ, Burdick, D, Walencewicz, AJ, Glabe, CG, Cotman, CW·1993·The Journal of Neuroscience

Abstract

The progressive neurodegeneration of Alzheimer's disease has been hypothesized to be mediated, at least in part, by beta-amyloid protein. A relationship between the aggregation state of beta-amyloid protein and its ability to promote degeneration in vitro has been previously suggested. To evaluate this hypothesis and to define a structure- activity relationship for beta-amyloid, aggregation properties of an overlapping series of synthetic beta-amyloid peptides (beta APs) were investigated and compared with beta AP neurotoxic properties in vitro. Using light microscopy, electrophoresis, and ultracentrifugation assays, we found that few beta APs assembled into aggregates immediately after solubilization, but that over time peptides containing the highly hydrophobic beta 29–35 region formed stable aggregations. In short-term neuronal cultures, toxicity was associated specifically with those beta APs that also exhibited significant aggregation. Further, upon the partial reversal of beta 1–42 aggregation, a concomitant loss of toxicity was observed. A synthetic peptide derived from a different amyloidogenic protein, islet amyloid polypeptide, exhibited aggregation but not toxicity, suggesting that beta AP-induced neurotoxicity in vitro is not a nonspecific reaction to aggregated protein. The correlation between beta AP aggregation and neurotoxicity was also observed in long-term neuronal cultures but not in astrocyte cultures. These data are consistent with the hypothesis that beta-amyloid protein contributes to neurodegeneration in Alzheimer's disease.

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Crossref · 10.1523/jneurosci.13-04-01676.1993

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  1. Glenner GC, Eanes ED, Wiley CA (1988) Amyloid fibrils formed from a segment of the pancreatic islet amyloid protein. Biochem Biophys Res Commun 155:608-614.

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Authors
Pike, C., Burdick, D., Walencewicz, A., Glabe, C., & Cotman, C.
Affiliations
University of California, Irvine (US)
Venue
The Journal of Neuroscience
Published
1993-04-01
Volume
13
Issue
4
Pages
1676-1687
ISSN
  • 0270-6474 (ISSN-L)
  • 1529-2401
OpenAlex
W1960543132
Cited by
1,417
References
7
Citations by year
2026: 9 · 2025: 11 · 2024: 15 · 2023: 33 · 2022: 15 · 2021: 20 · 2020: 27 · 2019: 24 · 2018: 17 · 2017: 22 · 2016: 28 · 2015: 21 · 2014: 32 · 2013: 32 · 2012: 32
FWCI
38.25
Type
journal article
Language
en
Open access
Locations
  • Journal of Neuroscience (publishedVersion, cc-by-nc-sa)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Institute on Aging (R35AG007918, AG07918)
  • National Institute of Mental Health (MH 14599, T32MH014599)
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
amyloid-beta, Alzheimer's disease, neurodegeneration, neurotoxicity, peptide aggregation, structure-activity relationship, amylin, neuronal culture, astrocytes, amyloid fibril formation
MeSH terms
Amino Acid Sequence, Amyloid, Animals, Cells, Cultured, Molecular Sequence Data, Nerve Degeneration, Neurons, Neurotoxins, Peptide Mapping, Structure-Activity Relationship, Time Factors, Amyloid beta-Peptides, Islet Amyloid Polypeptide

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