Bryostatin-1 promotes long-term potentiation via activation of PKCα and PKCε in the hippocampus

H. Kim, S. H. Han, H. Y. Quan, Y. J. Jung, J. An, P. Kang, J. B. Park, B. J. Yoon, G. H. Seol, S. S. Min

    Research output: Contribution to journalArticlepeer-review

    22 Citations (Scopus)

    Abstract

    Activation of protein kinase C (PKC) by bryostatin-1 affects various functions of the central nervous system. We explored whether bryostatin-1 influenced synaptic plasticity via a process involving PKC. Our purpose was to examine whether bryostatin-1 affected the induction of hippocampal long-term potentiation (LTP) in Schaffer-collateral fibers (CA1 fibers) of the hippocampus, and/or influenced the intracellular Ca2+ level of hippocampal neurons. We also determined the PKC isoforms involved in these processes. We found that bryostatin-1 strongly facilitated LTP induction, in a dose-dependent manner, upon single-theta burst stimulation (TBS). Further, intracellular Ca2+ levels also increased with increasing concentration of bryostatin-1. The facilitative effects of bryostatin-1 in terms of LTP induction and enhancement of intracellular Ca2+ levels were blocked by specific inhibitors of PKCα and PKCε, but not of PKCδ. Our results suggest that bryostatin-1 is involved in neuronal functioning and facilitates induction of LTP via activation of PKCα and/or PKCε.

    Original languageEnglish
    Pages (from-to)348-355
    Number of pages8
    JournalNeuroscience
    Volume226
    DOIs
    Publication statusPublished - 2012 Dec 13

    Bibliographical note

    Funding Information:
    This study was supported by the Mid-career Researcher program through the NRF grant funded by the MEST ( 2011-0027545 ).

    Keywords

    • Bryostatin-1
    • Hippocampus
    • Long-term potentiation (LTP)
    • Protein kinase C (PKC)
    • Synaptic plasticity

    ASJC Scopus subject areas

    • General Neuroscience

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