Cited by 367Alzheimer's disease research and treatmentsNeuroinflammation and Neurodegeneration MechanismsNeuroscience and Neuropharmacology Research

Amyloid β Induces the Morphological Neurodegenerative Triad of Spine Loss, Dendritic Simplification, and Neuritic Dystrophies through Calcineurin Activation

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Wu, Hai-Yan, Hudry, Eloise, Hashimoto, Tadafumi, Kuchibhotla, Kishore, Rozkalne, Anete, Fan, Zhanyun, Spires-Jones, Tara, Xie, Hong +4 more·2010·The Journal of Neuroscience

Abstract

Amyloid β (Aβ)-containing plaques are surrounded by dystrophic neurites in the Alzheimer's disease (AD) brain, but whether and how plaques induce these neuritic abnormalities remain unknown. We tested the hypothesis that soluble oligomeric assemblies of Aβ, which surround plaques, induce calcium-mediated secondary cascades that lead to dystrophic changes in local neurites. We show that soluble Aβ oligomers lead to activation of the calcium-dependent phosphatase calcineurin (CaN) (PP2B), which in turn activates the transcriptional factor nuclear factor of activated T cells (NFAT). Activation of these signaling pathways, even in the absence of Aβ, is sufficient to produce a virtual phenocopy of Aβ-induced dystrophic neurites, dendritic simplification, and dendritic spine loss in both neurons in culture and in the adult mouse brain. Importantly, the morphological deficits in the vicinity of Aβ deposits in a mouse model of AD are ameliorated by CaN inhibition, supporting the hypothesis that CaN–NFAT are aberrantly activated by Aβ and that CaN–NFAT activation is responsible for disruption of neuronal structure near plaques. In accord with this, we also detect increased levels of an active form of CaN and NFATc4 in the nuclear fraction from the cortex of patients with AD. Thus, Aβ appears to mediate the neurodegeneration of AD, at least in part, by activation of CaN and subsequent NFAT-mediated downstream cascades.

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Authors
Wu, H.-Y., Hudry, E., Hashimoto, T., Kuchibhotla, K., Rozkalne, A., Fan, Z., Spires-Jones, T., Xie, H., Arbel-Ornath, M., Grosskreutz, C. L., Bacskai, B. J., & Hyman, B. T.
Affiliations
  • Massachusetts General Hospital (US)
  • Harvard University (US)
  • Massachusetts Eye and Ear Infirmary (US)
Corresponding author
Hyman, Bradley T.
Venue
The Journal of Neuroscience
Published
2010-02-17
Volume
30
Issue
7
Pages
2636-2649
ISSN
  • 0270-6474 (ISSN-L)
  • 1529-2401
OpenAlex
W2153438315
Cited by
367
References
63
Citations by year
2026: 11 · 2025: 10 · 2024: 15 · 2023: 19 · 2022: 20 · 2021: 26 · 2020: 25 · 2019: 17 · 2018: 15 · 2017: 22 · 2016: 25 · 2015: 28 · 2014: 25 · 2013: 34 · 2012: 24
FWCI
23.62
Type
journal article
Language
en
Open access
Locations
  • Journal of Neuroscience (publishedVersion, cc-by-nc-sa)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • Edinburgh Research Explorer (University of Edinburgh) (submittedVersion, other-oa)
Funders
  • Cincinnati Children's Hospital Medical Center
  • National Institutes of Health (AG08487)
  • National Institute on Aging (AG-08487, R01AG008487, P50AG005134, P30AG062421)
  • National Eye Institute (R01EY013399, EY13399)
  • National Institute of Biomedical Imaging and Bioengineering (EB 000768, R01EB000768)
Topics
  • Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
  • Life Sciences › Neuroscience › Neurology › Neuroinflammation and Neurodegeneration Mechanisms
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
Keywords
amyloid-beta, Alzheimer's disease, calcineurin, NFAT, dendritic spine loss, neuritic dystrophy, calcium signaling, neurodegeneration, amyloid plaques, NFATc4
MeSH terms
Animals, Calcium, Cells, Cultured, Cerebral Cortex, Embryo, Mammalian, Enzyme-Linked Immunosorbent Assay, Humans, Mice, Transgenic, Microtubule-Associated Proteins, Mutation, Nerve Degeneration, Neurons, Oligopeptides, Peptide Fragments, Postmortem Changes, Subcellular Fractions, Amyloid beta-Peptides, Neurites, Amyloid beta-Protein Precursor, Culture Media, Conditioned, Calcineurin, Protein Transport, Dendritic Spines, Green Fluorescent Proteins, NFATC Transcription Factors, Mice

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