Cited by 127Alzheimer's disease research and treatmentsNeuroscience and Neuropharmacology ResearchNeuroinflammation and Neurodegeneration Mechanisms

Synaptic Activity Reduces Intraneuronal Aβ, Promotes APP Transport to Synapses, and Protects against Aβ-Related Synaptic Alterations

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Tampellini, Davide, Rahman, Nawreen, Gallo, Eduardo F., Huang, Zhenyong, Dumont, Magali, Capetillo-Zarate, Estibaliz, Ma, Tao, Zheng, Rong +4 more·2009·The Journal of Neuroscience

Abstract

A central question in Alzheimer's disease research is what role synaptic activity plays in the disease process. Synaptic activity has been shown to induce β-amyloid peptide release into the extracellular space, and extracellular β-amyloid has been shown to be toxic to synapses. We now provide evidence that the well established synaptotoxicity of extracellular β-amyloid requires γ-secretase processing of amyloid precursor protein. Recent evidence supports an important role for intraneuronal β-amyloid in the pathogenesis of Alzheimer's disease. We show that synaptic activity reduces intraneuronal β-amyloid and protects against β-amyloid-related synaptic alterations. We demonstrate that synaptic activity promotes the transport of the amyloid precursor protein to synapses using live cell imaging, and that the protease neprilysin is involved in reduction of intraneuronal β-amyloid with synaptic activity.

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Authors
Tampellini, D., Rahman, N., Gallo, E. F., Huang, Z., Dumont, M., Capetillo-Zarate, E., Ma, T., Zheng, R., Lu, B., Nanus, D. M., Lin, M. T., & Gouras, G. K.
Affiliations
  • Cornell University (US)
  • Weill Cornell Medicine (US)
  • Harvard University (US)
  • Rockefeller University (US)
Corresponding author
Gouras, Gunnar K.
Venue
The Journal of Neuroscience
Published
2009-08-05
Volume
29
Issue
31
Pages
9704-9713
ISSN
  • 0270-6474 (ISSN-L)
  • 1529-2401
OpenAlex
W2094929105
Cited by
127
References
78
Citations by year
2026: 2 · 2024: 2 · 2023: 4 · 2022: 5 · 2021: 9 · 2020: 4 · 2019: 8 · 2018: 6 · 2017: 7 · 2016: 8 · 2015: 6 · 2014: 8 · 2013: 12 · 2012: 11
FWCI
10.16
Type
journal article
Language
en
Open access
Locations
  • Journal of Neuroscience (publishedVersion, cc-by-nc-sa)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • Lund University Publications (Lund University) (submittedVersion)
Funders
  • Alzheimer's Association (AG09464)
  • Weill Cornell Medical College
  • National Institute on Aging (R01AG027140, AG09464, R01AG020729, K02AG028174, AG 20729, AG028174, AG027140, P01AG009464)
  • National Institute of Neurological Disorders and Stroke (R01NS045677)
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
synaptic activity, synaptotoxicity, neprilysin, Alzheimer's disease, synaptic plasticity, live-cell imaging
MeSH terms
Disks Large Homolog 4 Protein, Animals, Biological Transport, Active, Cells, Cultured, Extracellular Space, Hippocampus, Humans, Interneurons, Membrane Proteins, Mice, Transgenic, Synaptic Transmission, Neuronal Plasticity, Peptide Fragments, Receptors, Cell Surface, Synapses, Neprilysin, Amyloid beta-Peptides, Amyloid beta-Protein Precursor, Long-Term Potentiation, Intracellular Signaling Peptides and Proteins, Mice, Guanylate Kinases, Amyloid Precursor Protein Secretases, Protease Nexins, In Vitro Techniques

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