Cited by 227Alzheimer's disease research and treatmentsProtein Kinase Regulation and GTPase SignalingNeuroinflammation and Neurodegeneration Mechanisms

Rapid Tyrosine Phosphorylation of Neuronal Proteins Including Tau and Focal Adhesion Kinase in Response to Amyloid-β Peptide Exposure: Involvement of Src Family Protein Kinases

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Williamson, Ritchie, Scales, Timothy, Clark, Bruce R., Gibb, Graham, Reynolds, C. Hugh, Kellie, Stuart, Bird, Ian N., Varndell, Ian M. +3 more·2002·The Journal of Neuroscience

Abstract

The increased production of amyloid β-peptide (Aβ) in Alzheimer's disease is acknowledged to be a key pathogenic event. In this study, we examined the response of primary human and rat brain cortical cultures to Aβ administration and found a marked increase in the tyrosine phosphorylation content of numerous neuronal proteins, including tau and putative microtubule-associated protein 2c (MAP2c). We also found that paired helical filaments of aggregated and hyperphosphorylated tau are tyrosine phosphorylated, indicating that changes in the phosphotyrosine content of cytoplasmic proteins in response to Aβ are potentially an important process. Increased tyrosine phosphorylation of cytoskeletal and other neuronal proteins was specific to fibrillar Aβ 25–35 and Aβ 1–42. The tyrosine phosphorylation was blocked by addition of the Src family tyrosine kinase inhibitor 4-amino-5-(4-chlorophenyl)-7(t-butyl)pyrazol(3,4-d)pyramide (PP2) and the phosphatidylinositol 3-kinase inhibitor LY 294002. Tyrosine phosphorylation of tau and MAP2c was concomitant with an increase in the tyrosine phosphorylation and subsequent putative activation of the non-receptor kinase, focal adhesion kinase (FAK). Immunoprecipitation of Fyn, a member of the Src family, from Aβ 25–35-treated neurons showed an increased association of Fyn with FAK. Aβ treatment of cells also stimulated the sustained activation of extracellular regulated kinase-2, which was blocked by addition of PP2 and LY 294002, suggesting that FAK/Fyn/PI3-kinase association is upstream of mitogen-activated protein (MAP) kinase signaling in Aβ-treated neurons. This cascade of signaling events contains the earliest biochemical changes in neurons to be described in response to Aβ exposure and may be critical for subsequent neurodegenerative changes.

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Crossref · 10.1523/jneurosci.22-01-00010.2002

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  1. MacManus A, Ramsden M, Murray M, Henderson Z, Pearson HA, Campbell VA (2000) Enhancement of (45) Ca (2ϩ) influx and voltage- dependent Ca(2ϩ) channel activity by beta-amyloid-(1-40) in rat cor- tical synaptosomes and cultured cortical neurons. Modulation by the proinflammatory cytokine interleukin-1beta. J Biol Chem 275:4713-4718.

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Authors
Williamson, R., Scales, T., Clark, B. R., Gibb, G., Reynolds, C. H., Kellie, S., Bird, I. N., Varndell, I. M., Sheppard, P. W., Everall, I., & Anderton, B. H.
Affiliations
King's College London (GB)
Venue
The Journal of Neuroscience
Published
2002-01-01
Volume
22
Issue
1
Pages
10-20
ISSN
  • 0270-6474 (ISSN-L)
  • 1529-2401
OpenAlex
W1841303832
Cited by
227
References
5
Citations by year
2025: 3 · 2024: 4 · 2023: 5 · 2022: 3 · 2021: 7 · 2020: 6 · 2019: 2 · 2018: 6 · 2017: 4 · 2016: 6 · 2015: 6 · 2014: 5 · 2013: 3 · 2012: 17
FWCI
12.19
Type
journal article
Language
en
Open access
Locations
  • Journal of Neuroscience (publishedVersion, cc-by-nc-sa)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • Research Portal (King's College London) (submittedVersion)
Funders
  • Wellcome Trust
  • Alzheimer's Society
  • King's College London
  • Medical Research Council
Topics
  • Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Protein Kinase Regulation and GTPase Signaling
  • Life Sciences › Neuroscience › Neurology › Neuroinflammation and Neurodegeneration Mechanisms
Keywords
amyloid-beta, tyrosine phosphorylation, tau protein, focal adhesion kinase, Src family kinases, Fyn, MAP2c, paired helical filaments, phosphatidylinositol 3-kinase, ERK2, MAPK signaling, Alzheimer's disease, neuronal signaling, PP2, LY294002
MeSH terms
Phosphoinositide-3 Kinase Inhibitors, Animals, Cells, Cultured, Cytoskeletal Proteins, Enzyme Inhibitors, Humans, Microtubule-Associated Proteins, Neurons, Peptide Fragments, Phosphorylation, Protein Binding, Protein-Tyrosine Kinases, Proto-Oncogene Proteins, Tyrosine, Signal Transduction, Amyloid beta-Peptides, tau Proteins, src-Family Kinases, Phosphatidylinositol 3-Kinases, Mitogen-Activated Protein Kinase 1, Caspases, Proto-Oncogene Proteins c-fyn, Rats, Focal Adhesion Protein-Tyrosine Kinases, Focal Adhesion Kinase 1

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