Cited by 317Alzheimer's disease research and treatmentsDementia and Cognitive Impairment ResearchNeuroinflammation and Neurodegeneration Mechanisms

F yn inhibition rescues established memory and synapse loss in A lzheimer mice

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Kaufman, Adam C., Salazar, Santiago V., Haas, Laura T., Yang, Jinhee, Kostylev, Mikhail A., Jeng, Amanda T., Robinson, Sophie A., Gunther, Erik C. +3 more·2015·Annals of Neurology

Abstract

Objective: Currently no effective disease‐modifying agents exist for the treatment of Alzheimer disease (AD). The Fyn tyrosine kinase is implicated in AD pathology triggered by amyloid‐ß oligomers (Aßo) and propagated by Tau. Thus, Fyn inhibition may prevent or delay disease progression. Here, we sought to repurpose the Src family kinase inhibitor oncology compound, AZD0530, for AD. Methods: The pharmacokinetics and distribution of AZD0530 were evaluated in mice. Inhibition of Aßo signaling to Fyn, Pyk2, and Glu receptors by AZD0530 was tested by brain slice assays. After AZD0530 or vehicle treatment of wild‐type and AD transgenic mice, memory was assessed by Morris water maze and novel object recognition. For these cohorts, amyloid precursor protein (APP) metabolism, synaptic markers (SV2 and PSD‐95), and targets of Fyn (Pyk2 and Tau) were studied by immunohistochemistry and by immunoblotting. Results: AZD0530 potently inhibits Fyn and prevents both Aßo‐induced Fyn signaling and downstream phosphorylation of the AD risk gene product Pyk2, and of NR2B Glu receptors in brain slices. After 4 weeks of treatment, AZD0530 dosing of APP/PS1 transgenic mice fully rescues spatial memory deficits and synaptic depletion, without altering APP or Aß metabolism. AZD0530 treatment also reduces microglial activation in APP/PS1 mice, and rescues Tau phosphorylation and deposition abnormalities in APP/PS1/Tau transgenic mice. There is no evidence of AZD0530 chronic toxicity. Interpretation: Targeting Fyn can reverse memory deficits found in AD mouse models, and rescue synapse density loss characteristic of the disease. Thus, AZD0530 is a promising candidate to test as a potential therapy for AD. Ann Neurol 2015;77:953–971

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Authors
Kaufman, A. C., Salazar, S. V., Haas, L. T., Yang, J., Kostylev, M. A., Jeng, A. T., Robinson, S. A., Gunther, E. C., van Dyck, C. H., Nygaard, H. B., & Strittmatter, S. M.
Affiliations
  • Yale University (US)
  • Department of Psychiatry Yale University School of Medicine New Haven CT
Corresponding author
Strittmatter, Stephen M.
Venue
Annals of Neurology
Publisher
Wiley
Published
2015-03-21
Volume
77
Issue
6
Pages
953-971
ISSN
  • 0364-5134 (ISSN-L)
  • 1531-8249
OpenAlex
W1725757145
Cited by
314
References
62
Citations by year
2026: 16 · 2025: 13 · 2024: 19 · 2023: 25 · 2022: 28 · 2021: 38 · 2020: 41 · 2019: 28 · 2018: 40 · 2017: 29 · 2016: 24 · 2015: 13
FWCI
25.77
Type
journal article
Language
en
Open access
Locations
  • Annals of Neurology (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • National Institutes of Health (UH3-TR000967, R01AG034924)
  • BrightFocus Foundation
  • Alzheimer's Association
  • Falk Medical Research Trust
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
Alzheimer's disease, Fyn tyrosine kinase, AZD0530, Src family kinase inhibitor, amyloid-beta oligomers, Pyk2, NMDA receptor NR2B, APP/PS1 mice, spatial memory impairment, synaptic loss, PSD-95, microglial activation, tau phosphorylation, drug repurposing, disease-modifying therapy
MeSH terms
Alzheimer Disease, Animals, Behavior, Animal, Disease Models, Animal, Mice, Inbred C57BL, Mice, Transgenic, Quinazolines, Signal Transduction, Amyloid beta-Peptides, Protein Kinase Inhibitors, Proto-Oncogene Proteins c-fyn, Mice, Focal Adhesion Kinase 2, Benzodioxoles

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