Cited by 486Alzheimer's disease research and treatmentsNeuroinflammation and Neurodegeneration MechanismsDementia and Cognitive Impairment Research

Apolipoprotein E is essential for amyloid deposition in the APP V717F transgenic mouse model of Alzheimer's disease

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Bales, Kelly R., Verina, Tatyana, Cummins, David J., Du, Yansheng, Dodel, Richard C., Saura, Josep, Fishman, Cindy E., DeLong, Cynthia A. +4 more·1999·Proceedings of the National Academy of Sciences

Abstract

We quantified the amount of amyloid β-peptide (Aβ) immunoreactivity as well as amyloid deposits in a large cohort of transgenic mice overexpressing the V717F human amyloid precursor protein ( APP V717F+/− TG mice) with no, one, or two mouse apolipoprotein E ( Apoe ) alleles at various ages. Remarkably, no amyloid deposits were found in any brain region of APP V717F+/− Apoe −/− TG mice as old as 22 mo of age, whereas age-matched APP V717F +/− Apoe +/− and Apoe +/+ TG mice display abundant amyloid deposition. The amount of Aβ immunoreactivity in the hippocampus was also markedly reduced in an Apoe gene dose-dependent manner ( Apoe +/+ > Apoe +/− ≫ Apoe −/− ), and no Aβ immunoreactivity was detected in the cerebral cortex of APP V717F+/− Apoe −/− TG mice at any of the time points examined. The absence of apolipoprotein E protein (apoE) dramatically reduced the amount of both Aβ 1–40 and Aβ 1–42 immunoreactive deposits as well as the resulting astrogliosis and microgliosis normally observed in APP V717F TG mice. ApoE immunoreactivity was detected in a subset of Aβ immunoreactive deposits and in virtually all thioflavine-S-fluorescent amyloid deposits. Because the absence of apoE alters neither the transcription or translation of the APP V717F transgene nor its processing to Aβ peptide(s), we postulate that apoE promotes both the deposition and fibrillization of Aβ, ultimately affecting clearance of protease-resistant Aβ/apoE aggregates. ApoE appears to play an essential role in amyloid deposition in brain, one of the neuropathological hallmarks of Alzheimer's disease.

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Crossref · 10.1073/pnas.96.26.15233

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Authors
Bales, K. R., Verina, T., Cummins, D. J., Du, Y., Dodel, R. C., Saura, J., Fishman, C. E., DeLong, C. A., Piccardo, P., Petegnief, V., Ghetti, B., & Paul, S. M.
Affiliations
  • Purdue University West Lafayette (US)
  • Neuroscience Discovery Research and Statistical and Mathematical Sciences, Lilly Research Laboratories, Indianapolis, IN 46285; Departments of Pathology and Laboratory Medicine and Pharmacology, Toxicology, and Psychiatry, Indiana School of Medicine, Indianapolis, IN 46285; Department of Neurology, Phillips University, Marburg, Germany; and Department of Veterinary Pathobiology, Purdue University, West Lafayette, IN 47907
Corresponding author
Paul, Steven M.
Venue
Proceedings of the National Academy of Sciences
Published
1999-12-21
Volume
96
Issue
26
Pages
15233-15238
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W2152192643
Cited by
486
References
50
Citations by year
2026: 5 · 2025: 8 · 2024: 15 · 2023: 7 · 2022: 14 · 2021: 9 · 2020: 19 · 2019: 10 · 2018: 11 · 2017: 11 · 2016: 11 · 2015: 11 · 2014: 18 · 2013: 12 · 2012: 20
FWCI
14.08
Type
journal article
Language
en
Open access
Locations
  • Proceedings of the National Academy of Sciences (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • DIGITAL.CSIC (Spanish National Research Council (CSIC)) (acceptedVersion)
Funders
  • Alzheimer's Association
  • Eli Lilly and Company
  • National Institute on Aging (P30AG010133)
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
apolipoprotein E, amyloid-beta, amyloid deposition, Alzheimer's disease, amyloid fibril formation, astrocyte activation, microglial activation, amyloid clearance, hippocampus, cerebral cortex
MeSH terms
Alzheimer Disease, Amyloid, Animals, Apolipoproteins E, Brain, Cerebral Cortex, Disease Models, Animal, Gliosis, Heterozygote, Hippocampus, Homozygote, Mice, Transgenic, Neuroglia, Amyloid beta-Protein Precursor, Mice, Knockout, Mice

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