Cited by 114Neuroscience and Neuropharmacology ResearchCellular Mechanics and InteractionsGenetics and Neurodevelopmental Disorders

Immunocytochemical localization of actin in dendritic spines of the cerebral cortex using colloidal gold as a probe

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Cohen, Rochelle S., Chung, Sookja K., Pfaff, Donald W.·1985·Cellular and Molecular Neurobiology

Abstract

Immunocytochemical localization of actin in rat cerebral cortex embedded in the resin LR White was performed using 5 nm colloidal gold as a probe. Antigenicity is maintained throughout the embedding procedure and the low electron opacity of LR White permits fine filamentous structures to be visualized. Control experiments included incubating the sections with normal goat serum or mouse IgG instead of the primary antibody, preadsorbing the antibody with actin from bovine muscle or liver acetone powder, and heat treating the primary antibody. Immunoreactive actin was identified primarily in dendritic spines, particularly in the postsynaptic density (PSD), the subsynaptic web, and the spine apparatus and endothelial and smooth muscle cells of blood vessels. Within dendritic spines, actin which is labeled in the PSD is in continuity with the filaments of the subsynaptic web. These filaments, in turn, are in continuity with the spine apparatus and/or the spine membranes adjacent to the PSD. The PSD may therefore function like other submembranous filamentous arrays which communicate events occurring at the membrane, in this case, the postsynaptic membrane, to the underlying cytoskeletal network, i.e., the subsynaptic web of the spine. It is also suggested that the actin present in the spine may play a role in changes in spine shape and synaptic curvature. Some actin was also seen in the presynaptic process in association with synaptic vesicles, the filamentous network that is contiguous with the synaptic vesicle membrane, and the presynaptic dense projections. Actin may be involved in dynamic processes in the presynaptic ending which include vesicle translocation.

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Research works printed but not linked: 2

  1. Andrews, S. B., Leapman, R. D., Landis, D. M. D., Fiori, C. E., and Reese, T. S. (1984). Elemental distribution in rapid-frozen cerebellar cortex.J. Cell Biol.99(4):424a. [Google Scholar]
  2. Ellisman, M. H. (1984). A transcellular filament network that interconnects cells in tissues.Soc. Neurosci. Abstr.10(1):44. [Google Scholar]

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Authors
Cohen, R. S., Chung, S. K., & Pfaff, D. W.
Affiliations
  • University of Illinois Chicago (US)
  • Rockefeller University (US)
Venue
Cellular and Molecular Neurobiology
Published
1985-09
Volume
5
Issue
3
Pages
271-284
ISSN
  • 0272-4340 (ISSN-L)
  • 1573-6830
OpenAlex
W1966759575
Cited by
114
References
53
Citations by year
2026: 1 · 2023: 3 · 2022: 1 · 2021: 1 · 2020: 1 · 2019: 3 · 2018: 2 · 2017: 3 · 2016: 4 · 2015: 5 · 2014: 5 · 2013: 5 · 2012: 2
FWCI
1.60
Type
journal article
Language
en
Open access
Locations
  • Cellular and Molecular Neurobiology (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • The HKU Scholars Hub (University of Hong Kong) (submittedVersion)
Funders
  • National Institute of Neurological Disorders and Stroke (NS 15889)
  • Eunice Kennedy Shriver National Institute of Child Health and Human Development (HD05751)
Topics
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Cellular Mechanics and Interactions
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetics and Neurodevelopmental Disorders
Keywords
actin, dendritic spines, postsynaptic density, spine apparatus, cerebral cortex, cytoskeleton, synaptic vesicles, synaptic plasticity
MeSH terms
Actins, Animals, Cattle, Cerebral Cortex, Dendrites, Female, Gold, Histocytochemistry, Immunochemistry, Microscopy, Electron, Neurons, Rats, Inbred Strains, Synapses, Rats

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