Cited by 201Alzheimer's disease research and treatmentsProtein Kinase Regulation and GTPase SignalingDementia and Cognitive Impairment Research

In Vitro Phosphorylation of the Cytoplasmic Domain of the Amyloid Precursor Protein by Glycogen Synthase Kinase‐3β

Aplin, Andrew E., Gibb, Graham M., Jacobsen, J. Steven, Gallo, Jean‐Marc, Anderton, Brian H.·1996·Journal of Neurochemistry

Abstract

The two pathological lesions found in the brains of Alzheimer's disease patients, neurofibrillary tangles and neuritic plaques, are likely to be formed through a common pathway. Neurofibrillary tangles are intracellular aggregates of paired helical filaments, the main component of which is hyperphosphorylated forms of the microtubule-associated protein tau. Extracellular neuritic plaques and diffuse and vascular amyloid deposits are aggregates of beta-amyloid protein, a 4-kDa protein derived from the amyloid precursor protein (APP). Using conditions in vitro under which two proline-directed protein kinases, glycogen synthase kinase-3beta (GSK-3beta) and mitogen-activated protein kinase (MAPK), were able to hyperphosphorylate tau, GSK-3beta but not MAPK phosphorylated recombinant APPcyt. The sole site of phosphorylation in APPcyt by GSK-3beta was determined by phosphoamino acid analysis and phosphorylation of APPcyt mutant peptides to be Thr743 (numbering as for APP770). This site was confirmed by endoproteinase Glu-C digestion of APPcyt and peptide sequencing. The ability of GSK-3beta to phosphorylate APPcyt and tau provides a putative link between the two lesions and indicates a critical role of GSK-3beta in the pathogenesis of Alzheimer's disease.

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Crossref · 10.1046/j.1471-4159.1996.67020699.x

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Authors
Aplin, A. E., Gibb, G. M., Jacobsen, J. S., Gallo, J., & Anderton, B. H.
Corresponding author
Aplin, Andrew E.
Venue
Journal of Neurochemistry
Publisher
Wiley
Published
1996-08
Volume
67
Issue
2
Pages
699-707
ISSN
  • 0022-3042 (ISSN-L)
  • 1471-4159
OpenAlex
W2069584842
Cited by
201
References
0
Citations by year
2026: 2 · 2025: 6 · 2024: 4 · 2023: 9 · 2022: 4 · 2021: 6 · 2020: 3 · 2019: 5 · 2018: 1 · 2017: 11 · 2016: 10 · 2015: 7 · 2014: 13 · 2013: 6 · 2012: 7
FWCI
1.35
Type
journal article
Language
en
Open access
closed
Locations
  • Journal of Neurochemistry (publishedVersion)
  • PubMed (publishedVersion)
Funders
Wellcome Trust
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
  • Health Sciences › Medicine › Psychiatry and Mental health › Dementia and Cognitive Impairment Research
Keywords
amyloid precursor protein, glycogen synthase kinase-3β, protein phosphorylation, Alzheimer's disease, tau hyperphosphorylation, neurofibrillary tangles, neuritic plaques, amyloid-beta, mitogen-activated protein kinase, phosphorylation site mapping
MeSH terms
Amino Acid Sequence, Animals, Base Sequence, Cytoplasm, Humans, Molecular Sequence Data, Phosphorylation, Phosphothreonine, Protein-Tyrosine Kinases, Amyloid beta-Protein Precursor, Calcium-Calmodulin-Dependent Protein Kinases, DNA Primers, Mitogen-Activated Protein Kinase 1, Glycogen Synthase Kinases, Glycogen Synthase Kinase 3, Rats

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