Cited by 275Alzheimer's disease research and treatmentsDementia and Cognitive Impairment ResearchNeuroinflammation and Neurodegeneration Mechanisms

Apolipoprotein (apo) E4 enhances amyloid β peptide production in cultured neuronal cells: ApoE structure as a potential therapeutic target

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Ye, Shiming, Huang, Yadong, Müllendorff, Karin, Dong, Liming, Giedt, Gretchen, Meng, Elaine C., Cohen, Fred E., Kuntz, Irwin D. +2 more·2005·Proceedings of the National Academy of Sciences

Abstract

Apolipoprotein (apo) E4 is a major risk factor for Alzheimer's disease, and many studies have suggested that apoE has isoform-specific effects on the deposition or clearance of amyloid β (Aβ) peptides. We examined the effects of apoE isoforms on the processing of amyloid precursor protein (APP) and on Aβ production in rat neuroblastoma B103 cells stably transfected with human wild-type APP695 (B103-APP). Lipid-poor apoE4 increased Aβ production in B103-APP cells to a greater extent than lipid-poor apoE3 (60% vs. 30%) due to more pronounced stimulation of APP recycling by apoE4 than apoE3. The difference in Aβ production was abolished by preincubating the cells with the receptor-associated protein (25 nM), which blocks the low-density lipoprotein receptor-related protein (LRP) pathway, or by reducing LRP expression by small interference RNA. The differences were also attenuated by replacing Arg-61 with threonine in apoE4 or pretreating apoE4 with small molecules, both of which abolish apoE4 intramolecular domain interaction. Thus, apoE4 appears to modulate APP processing and Aβ production through both the LRP pathway and domain interaction. These findings provide insights into why apoE4 is associated with increased risk for Alzheimer's disease and may represent a potential target for drug development.

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  • Altered amyloid-β processing and DNA damage have been associated with APOE4 and Alzheimer's disease.

    “Altered amyloid-β processing and DNA damage have been associated with APOE4 and AD19–21.”

    From APOE4 impairs myelination via cholesterol dysregulation in oligodendrocytes (2022) · cites this paper as [21]

    The Discussion (p. 18703) reports that apoE4 enhances amyloid-β production more than apoE3 and relates this finding to amyloid deposition in Alzheimer’s disease. The paper does not address DNA damage, so it supports only the amyloid-β part of the claim. (LLM, conf=0.88)

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Authors
Ye, S., Huang, Y., Müllendorff, K., Dong, L., Giedt, G., Meng, E. C., Cohen, F. E., Kuntz, I. D., Weisgraber, K. H., & Mahley, R. W.
Affiliations
  • University of California, San Francisco (US)
  • Gladstone Institutes (US)
Corresponding author
Mahley, Robert W.
Venue
Proceedings of the National Academy of Sciences
Published
2005-12-12
Volume
102
Issue
51
Pages
18700-18705
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W2137903730
Cited by
275
References
80
Citations by year
2026: 12 · 2025: 6 · 2024: 5 · 2023: 11 · 2022: 11 · 2021: 10 · 2020: 11 · 2019: 13 · 2018: 6 · 2017: 16 · 2016: 16 · 2015: 10 · 2014: 17 · 2013: 12 · 2012: 18
FWCI
8.99
Type
journal article
Language
en
Open access
Locations
  • Proceedings of the National Academy of Sciences (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • eScholarship (California Digital Library) (submittedVersion, other-oa)
  • eScholarship (California Digital Library) (submittedVersion)
Funders
  • National Institutes of Health
  • National Institute on Aging (P01AG022074, AG22074)
  • National Heart, Lung, and Blood Institute (HL64162, HL 37063, R01HL064162, R01HL037063)
  • National Institute of Neurological Disorders and Stroke (NS46465, R21NS046465)
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
APOE ε4, APP processing, Alzheimer's disease risk, receptor-associated protein, low density lipoprotein receptor-related protein, APOE isoforms, therapeutic target
MeSH terms
Animals, Apolipoproteins E, Cholesterol, Humans, Models, Molecular, Neurons, Protein Processing, Post-Translational, Amyloid beta-Peptides, Protein Structure, Tertiary, Protein Isoforms, LDL-Receptor Related Proteins, Cell Line, Tumor, Rats, Apolipoprotein E3, Apolipoprotein E4

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