Cited by 154Alzheimer's disease research and treatmentsDementia and Cognitive Impairment ResearchNeuroinflammation and Neurodegeneration Mechanisms

The DOI matches its Crossref record; 85 of the 87 references it cites were found in a registry or an index.

A Synthetic Peptide Blocking the Apolipoprotein E/β-Amyloid Binding Mitigates β-Amyloid Toxicity and Fibril Formation in Vitro and Reduces β-Amyloid Plaques in Transgenic Mice

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Abstract

Alzheimer's disease (AD) is associated with accumulation of beta-amyloid (Abeta). A major genetic risk factor for sporadic AD is inheritance of the apolipoprotein (apo) E4 allele. ApoE can act as a pathological chaperone of Abeta, promoting its conformational transformation from soluble Abeta into toxic aggregates. We determined if blocking the apoE/Abeta interaction reduces Abeta load in transgenic (Tg) AD mice. The binding site of apoE on Abeta corresponds to residues 12 to 28. To block binding, we synthesized a peptide containing these residues, but substituted valine at position 18 to proline (Abeta12-28P). This changed the peptide's properties, making it non-fibrillogenic and non-toxic. Abeta12-28P competitively blocks binding of full-length Abeta to apoE (IC50 = 36.7 nmol). Furthermore, Abeta12-28P reduces Abeta fibrillogenesis in the presence of apoE, and Abeta/apoE toxicity in cell culture. Abeta12-28P is blood-brain barrier-permeable and in AD Tg mice inhibits Abeta deposition. Tg mice treated with Abeta12-28P for 1 month had a 63.3% reduction in Abeta load in the cortex (P = 0.0043) and a 59.5% (P = 0.0087) reduction in the hippocampus comparing to age-matched control Tg mice. Antibodies against Abeta were not detected in sera of treated mice; therefore the observed therapeutic effect of Abeta12-28P cannot be attributed to an antibody clearance response. Our experiments demonstrate that compounds blocking the interaction between Abeta and its pathological chaperones may be beneficial for treatment of beta-amyloid deposition in AD.

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Research works printed but not linked: 5

  1. Stokes A: Humane endpoints in animal experiments for laboratory animals used in toxicity testing. Proceedings of the 3rd World Congress on Alternatives and Animal Use in Life Sciences. 1999 Bologna, Italy
  2. Kim, 1988, Production and characterization of monoclonal antibodies reactive to synthetic cerebrovascular amyloid peptide, Neurosci Res Commun, 2, 121
  3. Sadowski, 2001, Effect of the presenilin 1 P117L FAD linked mutation on hippocampal morphology transgenic mice, J Neuropathol Exp Neurol, 60, 543
  4. Jimenez-Huete, 1998, Antibodies directed to the carboxyl terminus of amyloid β-peptide recognize sequence epitopes and distinct immunoreactive deposits in Alzheimer's disease brain, Alzheimers Rep, 1, 41
  5. Schenk, 1999, Immunization with amyloid-β attenuates Alzheimer disease-like pathology in the PDAPP mice, Nature, 400, 173, 10.1038/22124 · DOI · Paper page

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Metadata

Authors
Sadowski, M., Pankiewicz, J., Scholtzova, H., Ripellino, J. A., Li, Y., Schmidt, S. D., Mathews, P. M., Fryer, J. D., Holtzman, D. M., Sigurdsson, E. M., & Wisniewski, T.
Affiliations
  • New York University (US)
  • Nathan Kline Institute for Psychiatric Research (US)
  • Washington University in St. Louis (US)
Venue
The American Journal of Pathology
Publisher
Elsevier BV
Published
2004-09
Volume
165
Issue
3
Pages
937-948
ISSN
0002-9440 (ISSN-L)
OpenAlex
W2164642027
Cited by
154
References
87
Citations by year
2026: 6 · 2025: 6 · 2024: 5 · 2023: 4 · 2022: 9 · 2021: 5 · 2020: 7 · 2019: 6 · 2018: 2 · 2017: 1 · 2016: 2 · 2015: 4 · 2014: 9 · 2013: 8 · 2012: 10
FWCI
7.20
Type
journal article
Language
en
Open access
Locations
  • American Journal Of Pathology (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
National Institutes of Health (AG15408, AG20747, AG13956)
Topics
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › 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, apolipoprotein E, APOE ε4, peptide antagonists, amyloid fibril formation, amyloid plaques, transgenic mice, blood-brain barrier permeability, amyloid deposition
MeSH terms
Alzheimer Disease, Animals, Apolipoproteins E, Astrocytes, Binding Sites, Blood-Brain Barrier, Brain, Competitive Bidding, Female, Half-Life, Humans, Male, Membrane Proteins, Mice, Inbred C57BL, Mice, Transgenic, Mutation, Neuroblastoma, Peptide Fragments, Protein Binding, Tumor Cells, Cultured, Amyloid beta-Peptides, Mice, Knockout, Mice, Presenilin-1

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