Cited by 1,644Alzheimer's disease research and treatmentsNeuroscience and Neuropharmacology ResearchNeuroinflammation and Neurodegeneration Mechanisms

APP Processing and Synaptic Function

Open access
Kamenetz, Flavio, Tomita, Taisuke, Hsieh, Helen, Seabrook, Guy, Borchelt, David, Iwatsubo, Takeshi, Sisodia, Sangram, Malinow, Roberto·2003·Neuron

Abstract

A large body of evidence has implicated Abeta peptides and other derivatives of the amyloid precursor protein (APP) as central to the pathogenesis of Alzheimer's disease (AD). However, the functional relationship of APP and its proteolytic derivatives to neuronal electrophysiology is not known. Here, we show that neuronal activity modulates the formation and secretion of Abeta peptides in hippocampal slice neurons that overexpress APP. In turn, Abeta selectively depresses excitatory synaptic transmission onto neurons that overexpress APP, as well as nearby neurons that do not. This depression depends on NMDA-R activity and can be reversed by blockade of neuronal activity. Synaptic depression from excessive Abeta could contribute to cognitive decline during early AD. In addition, we propose that activity-dependent modulation of endogenous Abeta production may normally participate in a negative feedback that could keep neuronal hyperactivity in check. Disruption of this feedback system could contribute to disease progression in AD.

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Crossref · 10.1016/s0896-6273(03)00124-7

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Authors
Kamenetz, F., Tomita, T., Hsieh, H., Seabrook, G., Borchelt, D., Iwatsubo, T., Sisodia, S., & Malinow, R.
Affiliations
  • State University of New York (US)
  • The University of Tokyo (JP)
  • Merck & Co., Inc., Rahway, NJ, USA (United States) (US)
  • Johns Hopkins University (US)
  • University of Chicago (US)
Corresponding author
Malinow, Roberto
Venue
Neuron
Publisher
Elsevier BV
Published
2003-03
Volume
37
Issue
6
Pages
925-937
ISSN
0896-6273 (ISSN-L)
OpenAlex
W1964049915
Cited by
1,644
References
67
Citations by year
2026: 34 · 2025: 49 · 2024: 59 · 2023: 46 · 2022: 57 · 2021: 78 · 2020: 93 · 2019: 81 · 2018: 68 · 2017: 61 · 2016: 103 · 2015: 74 · 2014: 102 · 2013: 71 · 2012: 92
FWCI
35.34
Type
journal article
Language
en
Open access
Locations
  • Neuron (publishedVersion)
  • PubMed (publishedVersion)
  • Cold Spring Harbor Laboratory Institutional Repository (Cold Spring Harbor Laboratory) (acceptedVersion)
Funders
National Institute of General Medical Sciences (T32GM008444)
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 precursor protein, amyloid-beta, Alzheimer's disease, synaptic depression, excitatory synaptic transmission, NMDA receptor, neuronal activity, hippocampal neurons, neuronal hyperactivity, cognitive decline
MeSH terms
Alzheimer Disease, Animals, Hippocampus, Humans, Mice, Transgenic, Synaptic Transmission, Neurons, Synapses, Gene Expression, Amyloid beta-Peptides, Amyloid beta-Protein Precursor, Feedback, Physiological, Mice, Rats

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