Cited by 53Alzheimer's disease research and treatmentsDementia and Cognitive Impairment ResearchNeuroinflammation and Neurodegeneration Mechanisms

Tau acts as a mediator for A lzheimer's disease‐related synaptic deficits

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Liao, Dezhi, Miller, Eric C., Teravskis, Peter J.·2014·European Journal of Neuroscience

Abstract

The two histopathological hallmarks of Alzheimer's disease (AD) are amyloid plaques containing multiple forms of amyloid beta (Aβ) and neurofibrillary tangles containing phosphorylated tau proteins. As mild cognitive impairment frequently occurs long before the clinical diagnosis of AD, the scientific community has been increasingly interested in the roles of Aβ and tau in earlier cellular changes that lead to functional deficits. Therefore, great progress has recently been made in understanding how Aβ or tau causes synaptic dysfunction. However, the interaction between the Aβ and tau-initiated intracellular cascades that lead to synaptic dysfunction remains elusive. The cornerstone of the two-decade-old hypothetical amyloid cascade model is that amyloid pathologies precede tau pathologies. Although the premise of Aβ-tau pathway remains valid, the model keeps evolving as new signaling events are discovered that lead to functional deficits and neurodegeneration. Recent progress has been made in understanding Aβ-PrP(C) -Fyn-mediated neurotoxicity and synaptic deficits. Although still elusive, many novel upstream and downstream signaling molecules have been found to modulate tau mislocalization and tau hyperphosphorylation. Here we will discuss the mechanistic interactions between Aβ-PrP(C) -mediated neurotoxicity and tau-mediated synaptic deficits in an updated amyloid cascade model with calcium and tau as the central mediators.

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  • Aβ is believed to enhance phosphorylation of Tau proteins that consequently act as mediators in synaptic dysfunction and neuronal death.

    “In addition to a direct involvement of Aβ in pathways resulting in neurodegeneration and synaptic deficits, the peptide is believed to enhance the phosphorylation of Tau proteins that consequently act as mediators in events contributing to synaptic dysfunction and neuronal death [26].”

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Authors
Liao, D., Miller, E. C., & Teravskis, P. J.
Affiliations
University of Minnesota (US)
Corresponding author
Liao, Dezhi
Venue
European Journal of Neuroscience
Publisher
Wiley
Published
2014-04
Volume
39
Issue
7
Pages
1202-1213
ISSN
  • 0953-816X (ISSN-L)
  • 1460-9568
OpenAlex
W2171194512
Cited by
53
References
197
Citations by year
2026: 2 · 2025: 3 · 2024: 2 · 2023: 2 · 2022: 2 · 2021: 5 · 2020: 7 · 2019: 6 · 2018: 6 · 2017: 4 · 2016: 4 · 2015: 5 · 2014: 5
FWCI
0.70
Type
journal article
Language
en
Open access
Locations
  • European Journal of Neuroscience (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • Michael J. Fox Foundation for Parkinson's Research
  • American Health Assistance Foundation
  • National Institute on Drug Abuse (K02DA025048, T32-DA07234, R01DA020582, T32DA007234)
  • National Institute of General Medical Sciences (T32GM008471, P32-GM008471)
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, amyloid-beta, tau protein, synaptic dysfunction, amyloid hypothesis, tau hyperphosphorylation, Fyn, prion protein, neurotoxicity, calcium signaling, neurodegeneration, mild cognitive impairment
MeSH terms
Alzheimer Disease, Animals, Humans, Synaptic Transmission, Synapses, Signal Transduction, Amyloid beta-Peptides, tau Proteins

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