Cited by 1,061Alzheimer's disease research and treatmentsDementia and Cognitive Impairment ResearchNeuroinflammation and Neurodegeneration Mechanisms

Alzheimer's disease-affected brain: Presence of oligomeric Aβ ligands (ADDLs) suggests a molecular basis for reversible memory loss

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Gong, Yuesong, Chang, Lei, Viola, Kirsten L., Lacor, Pascale N., Lambert, Mary P, Finch, Caleb E., Krafft, Grant A., Klein, William L.·2003·Proceedings of the National Academy of Sciences

Abstract

A molecular basis for memory failure in Alzheimer's disease (AD) has been recently hypothesized, in which a significant role is attributed to small, soluble oligomers of amyloid beta-peptide (A beta). A beta oligomeric ligands (also known as ADDLs) are known to be potent inhibitors of hippocampal long-term potentiation, which is a paradigm for synaptic plasticity, and have been linked to synapse loss and reversible memory failure in transgenic mouse AD models. If such oligomers were to build up in human brain, their neurological impact could provide the missing link that accounts for the poor correlation between AD dementia and amyloid plaques. This article, using antibodies raised against synthetic A beta oligomers, verifies the predicted accumulation of soluble oligomers in AD frontal cortex. Oligomers in AD reach levels up to 70-fold over control brains. Brain-derived and synthetic oligomers show structural equivalence with respect to mass, isoelectric point, and recognition by conformation-sensitive antibodies. Both oligomers, moreover, exhibit the same striking patterns of attachment to cultured hippocampal neurons, binding on dendrite surfaces in small clusters with ligand-like specificity. Binding assays using solubilized membranes show oligomers to be high-affinity ligands for a small number of nonabundant proteins. Current results confirm the prediction that soluble oligomeric A beta ligands are intrinsic to AD pathology, and validate their use in new approaches to therapeutic AD drugs and vaccines.

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Crossref · 10.1073/pnas.1834302100

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Authors
Gong, Y., Chang, L., Viola, K. L., Lacor, P. N., Lambert, M. P., Finch, C. E., Krafft, G. A., & Klein, W. L.
Affiliations
Northwestern University (US)
Venue
Proceedings of the National Academy of Sciences
Published
2003-08-18
Volume
100
Issue
18
Pages
10417-10422
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W2040721710
Cited by
1,061
References
55
Citations by year
2026: 21 · 2025: 15 · 2024: 19 · 2023: 32 · 2022: 24 · 2021: 33 · 2020: 35 · 2019: 38 · 2018: 44 · 2017: 45 · 2016: 32 · 2015: 42 · 2014: 52 · 2013: 49 · 2012: 53
FWCI
35.26
Type
journal article
Language
en
Open access
Locations
  • Proceedings of the National Academy of Sciences (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Northwestern University
  • National Institutes of Health (1p01ag015501-01)
  • National Institute on Aging (P01-AG15501, R01-AG18877, R01AG018877)
Topics
  • Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
  • Health Sciences › Medicine › Psychiatry and Mental health › Dementia and Cognitive Impairment Research
  • Life Sciences › Neuroscience › Neurology › Neuroinflammation and Neurodegeneration Mechanisms
Keywords
Alzheimer's disease, amyloid-beta oligomers, memory loss, hippocampal long-term potentiation, synaptic plasticity, synaptic loss, frontal cortex, dendrites, protein-ligand binding, amyloid plaques, therapeutic vaccines
MeSH terms
Alzheimer Disease, Animals, Binding Sites, Brain Chemistry, Cells, Cultured, Cerebral Cortex, Ligands, Neurons, Oligopeptides, Peptide Fragments, Tissue Extracts, Immunoblotting, Amyloid beta-Peptides, Rats, Sprague-Dawley, Long-Term Potentiation, Rats

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