Cited by 184Neuroscience and Neuropharmacology ResearchProtein Kinase Regulation and GTPase SignalingMemory and Neural Mechanisms

Glutamate-induced transient modification of the postsynaptic density

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Dosemeci, Ayse, Tao-Cheng, Jung-Hwa, Vinade, Lucia, Winters, Christine A., Pozzo-Miller, Lucas, Reese, Thomas S.·2001·Proceedings of the National Academy of Sciences

Abstract

Depolarization of rat hippocampal neurons with a high concentration of external potassium induces a thickening of postsynaptic densities (PSDs) within 1.5-3 min. After high-potassium treatment, PSDs thicken 2.1-fold in cultured neurons and 1.4-fold in hippocampal slices compared with their respective controls. Thin-section immunoelectron microscopy of hippocampal cultures indicates that at least part of the observed thickening of PSDs can be accounted for by an accumulation of Ca(2+)/calmodulin-dependent protein kinase II (CaMKII) on their cytoplasmic faces. Indeed, PSD-associated gold label for CaMKII increases 5-fold after depolarization with potassium. The effects of high-potassium treatment on the composition and structure of the PSDs are mimicked by direct application of glutamate. In cultures, glutamate-induced thickening of PSDs and the accumulation of CaMKII on PSDs are reversed within 5 min of removal of glutamate and Ca(2+) from the extracellular medium. These results suggest that PSDs are dynamic structures whose thickness and composition are subject to rapid and transient changes during synaptic activity.

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Crossref · 10.1073/pnas.181336998

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  • Activation of CaMKII results in the rapid translocation of CaMKII to the PSD.

    “activation of CaMKII results in the rapid translocation of CaMKII to the PSD (137, 140, 169, 216–220).”

    From Synaptic memory and CaMKII (2023) · cites this paper as [137]

    The introduction says PSDs thicken during synaptic activity partly because of CaMKII translocation, and the discussion reports that glutamate induces reversible CaMKII association with PSDs. The paper supports rapid translocation after stimulation, but does not establish that activation of CaMKII itself causes it. (LLM, conf=0.83)

    Experimental — accuracy not yet measured
  • Glutamate treatment of neuronal cultures causes CaMKII clustering at excitatory synapses.

    “Glutamate treatment of neuronal cultures causes CaMKII clustering at excitatory synapses (136–140).”

    From Synaptic memory and CaMKII (2023) · cites this paper as [137]

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Research works printed but not linked: 1

  1. [7]Moshkov D A, Petrovskaia L L, Bragin A G. Tsitologiia. 1980;22:20–36. [PubMed] [Google Scholar]

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Authors
Dosemeci, A., Tao-Cheng, J.-H., Vinade, L., Winters, C. A., Pozzo-Miller, L., & Reese, T. S.
Affiliations
  • Marine Biological Laboratories, Woods Hole, MA 02543; Laboratory of Neurobiology, Electron Microscopy Facility, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD 20892; and Department of Neurobiology, University of Alabama, Birmingham, AL 35294
  • National Institutes of Health (US)
Venue
Proceedings of the National Academy of Sciences
Published
2001-08-21
Volume
98
Issue
18
Pages
10428-10432
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W2131475149
Cited by
184
References
24
Citations by year
2026: 2 · 2025: 4 · 2024: 4 · 2023: 7 · 2022: 6 · 2021: 3 · 2020: 18 · 2019: 4 · 2018: 8 · 2017: 6 · 2016: 13 · 2015: 7 · 2014: 6 · 2013: 5 · 2012: 5
FWCI
3.33
Type
journal article
Language
en
Open access
Locations
  • Proceedings of the National Academy of Sciences (publishedVersion)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Science Foundation (9817317)
  • National Institutes of Health
Topics
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Protein Kinase Regulation and GTPase Signaling
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Memory and Neural Mechanisms
Keywords
postsynaptic density, glutamate, CaMKII, hippocampal neurons, depolarization, high potassium, synaptic plasticity, calcium/calmodulin-dependent protein kinase, calcium signaling
MeSH terms
Animals, Cells, Cultured, Hippocampus, Nerve Tissue Proteins, Neurons, Potassium, Microscopy, Immunoelectron, Calcium-Calmodulin-Dependent Protein Kinases, Glutamic Acid, Rats, Calcium-Calmodulin-Dependent Protein Kinase Type 2

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