Cited by 110Alzheimer's disease research and treatmentsNeuroscience and Neuropharmacology ResearchNeuroinflammation and Neurodegeneration Mechanisms

Amyloid-β-Induced Dysregulation of AMPA Receptor Trafficking

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Guntupalli, Sumasri, Widagdo, Jocelyn, Anggono, Victor·2016·Neural Plasticity

Abstract

Evidence from neuropathological, genetic, animal model, and biochemical studies has indicated that the accumulation of amyloid-beta (A β) is associated with, and probably induces, profound neuronal changes in brain regions critical for memory and cognition in the development of Alzheimer’s disease (AD). There is considerable evidence that synapses are particularly vulnerable to AD, establishing synaptic dysfunction as one of the earliest events in pathogenesis, prior to neuronal loss. It is clear that excessive A β levels can disrupt excitatory synaptic transmission and plasticity, mainly due to dysregulation of the AMPA and NMDA glutamate receptors in the brain. Importantly, AMPA receptors are the principal glutamate receptors that mediate fast excitatory neurotransmission. This is essential for synaptic plasticity, a cellular correlate of learning and memory, which are the cognitive functions that are most disrupted in AD. Here we review recent advances in the field and provide insights into the molecular mechanisms that underlie A β-induced dysfunction of AMPA receptor trafficking. This review focuses primarily on NMDA receptor- and metabotropic glutamate receptor-mediated signaling. In particular, we highlight several mechanisms that underlie synaptic long-term depression as common signaling pathways that are hijacked by the neurotoxic effects of A β.

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  • Oligomeric Aβ particles suppress LTP and enhance LTD through interactions with synaptic proteins such as mGluRs and potentially α7-nAChR.

    “Oligomeric A␤ particles suppress LTP and enhance long-term depression (LTD) through interactions with synaptic proteins (and reviewed in Refs.31 and 55), such as metabotropic glutamate receptors (mGluRs) as well as potentially the Ca 2ϩ -permeable ␣7-nicotinic acetylcholine receptor (␣7-nAChR) (reviewed in Refs.56 and 57).”

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Authors
Guntupalli, S., Widagdo, J., & Anggono, V.
Affiliations
The University of Queensland (AU)
Corresponding author
Anggono, Victor
Venue
Neural Plasticity
Published
2016
Volume
2016
Pages
1-12
ISSN
  • 1687-5443 (ISSN-L)
  • 2090-5904
OpenAlex
W2301943443
Cited by
110
References
165
Citations by year
2026: 5 · 2025: 8 · 2024: 7 · 2023: 9 · 2022: 10 · 2021: 18 · 2020: 15 · 2019: 11 · 2018: 13 · 2017: 11 · 2016: 3
FWCI
1.49
Type
journal article
Language
en
Open access
Locations
  • Neural Plasticity (publishedVersion, cc-by)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
  • John T. Reid Charitable Trusts
  • Medical Research Council
  • National Health and Medical Research Council (1083209, 1099114)
Topics
  • Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
  • Life Sciences › Neuroscience › Neurology › Neuroinflammation and Neurodegeneration Mechanisms
Keywords
amyloid-beta, AMPA receptor trafficking, Alzheimer's disease, synaptic dysfunction, synaptic plasticity, NMDA receptor, metabotropic glutamate receptors, excitatory neurotransmission, neurotoxicity
MeSH terms
Alzheimer Disease, Animals, Brain, Humans, Neurons, Synapses, Amyloid beta-Peptides, Receptors, AMPA, Protein Transport

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