Cited by 38Memory and Neural MechanismsNeuroscience and Neuropharmacology ResearchNeurobiology and Insect Physiology Research

PKC Differentially Translocates during Spaced and Massed Training in Aplysia

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Farah, Carole A., Weatherill, Daniel, Dunn, Tyler W., Sossin, Wayne S.·2009·The Journal of Neuroscience

Abstract

Learning is highly regulated by the pattern of training. In Aplysia, an important organism for the development of cellular and molecular models of learning, spaced versus massed application of the same stimulus leads to different forms of memory. A critical molecular step underlying memory is the serotonin (5HT)-mediated activation of the novel PKC Apl II. Here, we demonstrate that activation of PKC Apl II is highly sensitive to the pattern of 5HT application. Spaced applications downregulate PKC translocation through PKA signaling, whereas massed applications lead to persistent translocation of PKC. Differential regulation of PKC translocation is mediated by competing feedback mechanisms that act through protein synthesis. These studies elucidate a fundamental molecular difference between spaced and massed training protocols.

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Crossref · 10.1523/jneurosci.1533-09.2009

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  • In Aplysia californica sensory neuron-motor neuron co-cultures, PKC is activated to a greater extent during a massed stimulus of continuous 5-HT than during a spaced stimulus with 15-minute intervals.

    “A study involving A. californica sensory neuron–motor neuron co-cultures62 found that protein kinase C (PKC) is activated to a greater extent during a massed stimulus (continuous 5-HT application) than during a spaced stimulus (15-minute intervals between applications).”

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Authors
Farah, C. A., Weatherill, D., Dunn, T. W., & Sossin, W. S.
Affiliations
Montreal Neurological Institute and Hospital (CA)
Corresponding author
Sossin, Wayne S.
Venue
The Journal of Neuroscience
Published
2009-08-19
Volume
29
Issue
33
Pages
10281-10286
ISSN
  • 0270-6474 (ISSN-L)
  • 1529-2401
OpenAlex
W2050970191
Cited by
38
References
38
Citations by year
2024: 3 · 2021: 2 · 2020: 1 · 2019: 1 · 2017: 2 · 2016: 3 · 2015: 3 · 2014: 2 · 2013: 4 · 2012: 6
FWCI
2.74
Type
journal article
Language
en
Open access
Locations
  • Journal of Neuroscience (publishedVersion, cc-by-nc-sa)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Cooley's Anemia Foundation
  • McGill University
  • Canadian Institutes of Health Research (12046, MOP12046)
Topics
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Memory and Neural Mechanisms
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neurobiology and Insect Physiology Research
Keywords
protein kinase C, PKC translocation, spaced training, massed training, Aplysia, serotonin, PKA signaling, memory consolidation, feedback regulation, protein synthesis
MeSH terms
Animals, Aplysia, Cells, Cultured, Learning, Memory, Protein Kinase C, Sensory Receptor Cells, Serotonin, Protein Biosynthesis, Protein Kinase Inhibitors

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