Cited by 132Alzheimer's disease research and treatmentsNeuroinflammation and Neurodegeneration MechanismsDementia and Cognitive Impairment Research

Reduced Reelin Expression Accelerates Amyloid- Plaque Formation and Tau Pathology in Transgenic Alzheimer's Disease Mice

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Kocherhans, S., Madhusudan, A., Doehner, J., Breu, K. S., Nitsch, R. M., Fritschy, J.-M., Knuesel, I.·2010·Journal of Neuroscience

Abstract

In addition to the fundamental role of the extracellular glycoprotein Reelin in neuronal development and adult synaptic plasticity, alterations in Reelin-mediated signaling have been suggested to contribute to neuronal dysfunction associated with Alzheimer's disease (AD). In vitro data revealed a biochemical link between Reelin-mediated signaling, Tau phosphorylation, and amyloid precursor protein (APP) processing. To directly address the role of Reelin in amyloid-beta plaque and Tau pathology in vivo, we crossed heterozygous Reelin knock-out mice (reeler) with transgenic AD mice to investigate the temporal and spatial AD-like neuropathology. We demonstrate that a reduction in Reelin expression results in enhanced amyloidogenic APP processing, as indicated by the precocious production of amyloid-beta peptides, the significant increase in number and size of amyloid-beta plaques, as well as age-related aggravation of plaque pathology in double mutant compared with single AD mutant mice of both sexes. Numerous amyloid-beta plaques accumulate in the hippocampal formation and neocortex of double mutants, precisely in layers with strongest Reelin expression and highest accumulation of Reelin plaques in aged wild-type mice. Moreover, concentric accumulations of phosphorylated Tau-positive neurons around amyloid-beta plaques were evident in 15-month-old double versus single mutant mice. Silver stainings indicated the presence of neurofibrillary tangles, selectively associated with amyloid-beta plaques and dystrophic neurites in the entorhinal cortex and hippocampus. Our findings suggest that age-related Reelin aggregation and concomitant reduction in Reelin-mediated signaling play a proximal role in synaptic dysfunction associated with amyloid-beta deposition, sufficient to enhance Tau phosphorylation and tangle formation in the hippocampal formation in aged Reelin-deficient transgenic AD mice.

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Crossref · 10.1523/jneurosci.0418-10.2010

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  • Reduced Reelin expression in HRM mice exacerbates the accumulation of both Aβ and phosphorylated tau, whose production is inhibited by Reelin signaling.

    “Reduced Reelin expression in HRM mice exacerbates the accumulation of both A␤ and phosphorylated tau (94), whose production is inhibited by Reelin signaling (Ref.76 and reviewed in Ref. 31).”

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Authors
Kocherhans, S., Madhusudan, A., Doehner, J., Breu, K. S., Nitsch, R. M., Fritschy, J.-M., & Knuesel, I.
Affiliations
University of Zurich (CH)
Venue
Journal of Neuroscience
Published
2010-07-07
Volume
30
Issue
27
Pages
9228-9240
ISSN
  • 0270-6474 (ISSN-L)
  • 1529-2401
OpenAlex
W2027080434
Cited by
132
References
63
Citations by year
2026: 3 · 2025: 10 · 2024: 3 · 2023: 7 · 2022: 13 · 2021: 8 · 2020: 6 · 2019: 4 · 2018: 6 · 2017: 10 · 2016: 11 · 2015: 8 · 2014: 6 · 2013: 11 · 2012: 22
FWCI
8.01
Type
journal article
Language
en
Open access
Locations
  • Journal of Neuroscience (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • Zurich Open Repository and Archive (University of Zurich) (acceptedVersion, other-oa)
  • Zurich Open Repository and Archive (University of Zurich) (submittedVersion, other-oa)
  • Zurich Open Repository and Archive (University of Zurich)
Funders
  • National Science Foundation
  • Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung (117806, 310000)
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
reelin, Alzheimer's disease, amyloid plaques, tau phosphorylation, APP processing, neurofibrillary tangles, hippocampus, entorhinal cortex, synaptic dysfunction, aging, dystrophic neurites
MeSH terms
Reelin Protein, Age Factors, Alzheimer Disease, Animals, Disease Models, Animal, Gene Expression Regulation, Hippocampus, Humans, Mice, Inbred C57BL, Mice, Transgenic, Mutation, Nerve Tissue Proteins, Serine Endopeptidases, Cell Adhesion Molecules, Neuronal, Amyloid beta-Peptides, Extracellular Matrix Proteins, Amyloid beta-Protein Precursor, Neurofibrillary Tangles, tau Proteins, Mice, alpha-Synuclein, Plaque, Amyloid

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