Cited by 471Neuroscience and Neuropharmacology ResearchGenetics and Neurodevelopmental DisordersNeuroinflammation and Neurodegeneration Mechanisms

Synaptic clustering of AMPA receptors by the extracellular immediate-early gene product narp.

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O’Brien, Richard J, Xu, Desheng, Petralia, Ronald S, Steward, Oswald, Huganir, Richard L, Worley, Paul·1999·Neuron

Abstract

Narp (neuronal activity-regulated pentraxin) is a secreted immediate-early gene (IEG) regulated by synaptic activity in brain. In this study, we demonstrate that Narp possesses several properties that make it likely to play a key role in excitatory synaptogenesis. Narp is shown to be selectively enriched at excitatory synapses on neurons from both the hippocampus and spinal cord. Overexpression of recombinant Narp increases the number of excitatory but not inhibitory synapses in cultured spinal neurons. In transfected HEK 293T cells, Narp interacts with itself, forming large surface clusters that coaggregate AMPA receptor subunits. Moreover, Narp-expressing HEK 293T cells can induce the aggregation of neuronal AMPA receptors. These studies support a model in which Narp functions as an extracellular aggregating factor for AMPA receptors.

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Crossref · 10.1016/s0896-6273(00)80782-5

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Authors
O’Brien, R. J., Xu, D., Petralia, R. S., Steward, O., Huganir, R. L., & Worley, P.
Affiliations
  • Howard Hughes Medical Institute (US)
  • Johns Hopkins University (US)
  • National Institutes of Health (US)
  • University of Virginia (US)
Corresponding author
Worley, Paul
Venue
Neuron
Publisher
Elsevier BV
Published
1999-06
Volume
23
Issue
2
Pages
309-323
ISSN
0896-6273 (ISSN-L)
OpenAlex
W2064751454
Cited by
471
References
61
Citations by year
2026: 7 · 2025: 19 · 2024: 15 · 2023: 8 · 2022: 12 · 2021: 23 · 2020: 15 · 2019: 9 · 2018: 11 · 2017: 21 · 2016: 8 · 2015: 14 · 2014: 17 · 2013: 13 · 2012: 22
FWCI
10.14
Type
journal article
Language
en
Open access
Locations
  • Neuron (publishedVersion, cc-by-nc-nd)
  • PubMed (publishedVersion)
Funders
  • National Institutes of Health (5k08ns001652-02)
  • National Institute of Mental Health (R01MH053608, R01MH53608)
  • National Institute of Neurological Disorders and Stroke (R01NS036715, K08 NS01652, R01NS36715)
Topics
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetics and Neurodevelopmental Disorders
  • Life Sciences › Neuroscience › Neurology › Neuroinflammation and Neurodegeneration Mechanisms
Keywords
NARP, synaptic clustering, immediate early genes, hippocampus, spinal cord neurons
MeSH terms
Pentraxins, Animals, Axons, C-Reactive Protein, Cell Line, Cells, Cultured, Dendrites, Extracellular Space, Hippocampus, Immunohistochemistry, Microscopy, Electron, Nerve Tissue Proteins, Neurons, Spinal Cord, Synapses, Transfection, Blotting, Western, Rats, Sprague-Dawley, Immediate-Early Proteins, Receptors, AMPA, Rats

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