Cited by 595Alzheimer's disease research and treatmentsDementia and Cognitive Impairment ResearchNeuroinflammation and Neurodegeneration Mechanisms

β-Amyloid fibrils induce tau phosphorylation and loss of microtubule binding

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Busciglio, Jorge, Lorenzo, Alfredo, Yeh, John, Yankner, Bruce A·1995·Neuron

Abstract

A central issue in the pathogenesis of Alzheimer's disease (AD) is the relationship between amyloid deposition and neurofibrillary tangle formation. To determine whether amyloid fibril formation affects the phosphorylation state of tau, primary cultures of fetal rat hippocampal and human cortical neurons were treated with beta-amyloid (beta A) in a soluble, amorphous-aggregated, or fibrillar form. Fibrillar beta A, but not soluble or amorphous-aggregated beta A, markedly induces the phosphorylation of tau at Ser-202 and Ser-396/Ser-404, resulting in a shift in the tau M(r) in human cortical neurons. Hyperphosphorylated tau accumulates in the somatodendritic compartment of fibrillar beta A-treated neurons in a soluble form that is not associated with microtubules and is incapable of binding to microtubules in vitro. Dephosphorylation of beta A-induced tau restores its capacity to bind to microtubules. Thus, amyloid fibril formation alters the phosphorylation state of tau, resulting in the loss of microtubule binding capacity and somatodendritic accumulation, properties also exhibited by tau in the AD brain. Amyloid fibril formation may therefore be a cause of abnormal tau phosphorylation in AD.

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Crossref · 10.1016/0896-6273(95)90232-5

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Authors
Busciglio, J., Lorenzo, A., Yeh, J., & Yankner, B. A.
Affiliations
  • Boston Children's Hospital (US)
  • Brigham and Women's Hospital (US)
Venue
Neuron
Publisher
Elsevier BV
Published
1995-04
Volume
14
Issue
4
Pages
879-888
ISSN
0896-6273 (ISSN-L)
OpenAlex
W1996917933
Cited by
595
References
10
Citations by year
2026: 8 · 2025: 14 · 2024: 9 · 2023: 11 · 2022: 14 · 2021: 11 · 2020: 14 · 2019: 18 · 2018: 14 · 2017: 12 · 2016: 21 · 2015: 23 · 2014: 23 · 2013: 25 · 2012: 25
FWCI
13.09
Type
journal article
Language
en
Open access
Locations
  • Neuron (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Institute on Aging (R29AG009229, AG09229)
  • National Institute of Neurological Disorders and Stroke (R01NS030352, NS30352)
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
amyloid-beta fibrils, tau phosphorylation, microtubule binding, Alzheimer's disease, neurofibrillary tangles, amyloid deposition, tau dephosphorylation, hippocampal neurons, cortical neurons, tau hyperphosphorylation
MeSH terms
Animals, Cells, Cultured, Cerebral Cortex, Hippocampus, Humans, Microtubules, Neurofibrils, Neurons, Phosphorylation, Phosphoserine, Amyloid beta-Peptides, tau Proteins, Rats

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