Cited by 200Alzheimer's disease research and treatmentsDementia and Cognitive Impairment ResearchNeuroinflammation and Neurodegeneration Mechanisms

APOE2 enhances neuroprotection against Alzheimer’s disease through multiple molecular mechanisms

Conejero-Goldberg, C, Gomar, J J, Bobes-Bascaran, T, Hyde, T M, Kleinman, J E, Herman, M M, Chen, S, Davies, P +1 more·2014·Molecular Psychiatry

Abstract

The common APOE2 gene variant is neuroprotective against Alzheimer's disease (AD) and reduces risk by nearly 50%. However, the mechanisms by which APOE2 confers neuroprotection are largely unknown. Here we showed that ApoE protein abundance in human postmortem cortex follows an isoform-dependent pattern (E2>E3>E4). We also identified a unique downstream transcriptional profile determined by microarray and characterized by downregulation of long-term potentiation (LTP) related transcripts and upregulation of extracellular matrix (ECM)/integrin-related transcripts in E2 cases and corroborated this finding at the protein level by demonstrating increases in ECM collagens and laminins. In vivo studies of healthy older individuals demonstrated a unique and advantageous biomarker signature in E2 carriers. APOE2 also reduced the risk of mild cognitive impairment to AD conversion by half. Our findings suggest that ApoE2 protein abundance, coupled with its inability to bind to LDLRs, may act to increase amyloid-beta (Ab) clearance. In addition, increased ECM and reduced LTP-related expression results in diminished activity-dependent Ab secretion and/or excitotoxicity, and thus also promotes neuroprotection.

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Crossref · 10.1038/mp.2013.194

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Authors
Conejero-Goldberg, C., Gomar, J. J., Bobes-Bascaran, T., Hyde, T. M., Kleinman, J. E., Herman, M. M., Chen, S., Davies, P., & Goldberg, T. E.
Affiliations
  • Northwell Health (US)
  • Lieber Institute for Brain Development (US)
  • National Institutes of Health (US)
Corresponding author
Goldberg, T E
Venue
Molecular Psychiatry
Published
2014-02-04
Volume
19
Issue
11
Pages
1243-1250
ISSN
  • 1359-4184 (ISSN-L)
  • 1476-5578
OpenAlex
W2076631828
Cited by
199
References
55
Citations by year
2026: 6 · 2025: 16 · 2024: 16 · 2023: 10 · 2022: 15 · 2021: 25 · 2020: 50 · 2019: 12 · 2018: 14 · 2017: 19 · 2016: 8 · 2015: 7 · 2014: 1
FWCI
7.76
Type
journal article
Language
en
Open access
closed
Locations
  • Molecular Psychiatry (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Alzheimer's Drug Discovery Foundation
  • F. Hoffmann-La Roche
  • Northern California Institute for Research and Education
  • National Institutes of Health (5u01ag024904-10)
  • National Institute on Aging (U01-AG-024904, P30AG010129, K01AG030514)
  • National Institute of Biomedical Imaging and Bioengineering
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
APOE2, Alzheimer's disease, neuroprotection, APOE isoforms, long-term potentiation, extracellular matrix, integrins, laminin, collagen, amyloid-beta clearance, mild cognitive impairment, biomarker signatures, excitotoxicity
MeSH terms
Adult, Aged, Alzheimer Disease, Cerebral Cortex, Collagen, Extracellular Matrix, Female, Humans, Laminin, Male, Middle Aged, Risk, RNA, Messenger, Biomarkers, Integrins, Long-Term Potentiation, Disease Progression, Protein Isoforms, Apolipoprotein E2, Cognitive Dysfunction

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