Inhibition of a calcium-activated, non-selective cation channel, in a rat insulinoma cell line, by adenine derivatives

Nicholas C. Sturgess, C. Nicholas Hales, Michael L. J. Ashford

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    54 Citations (Scopus)

    Abstract

    The effects of adenosine and adenine nucleotides on a calcium-activated non-selective cation channel, present in the plasma membrane of an insulin-secreting cell line CRI-G1 were investigated. Single-channel currents were recorded from inside-out membrane patches and the adenine derivatives applied to the solution bathing the cytoplasmic aspect of the membrane surface. The activity of this channel is shown to be inhibited by all the derivatives tested. The potency sequence for inhibition was found to be AMP > ADP > ATP greater than adenosine.
    Original languageEnglish
    Pages (from-to)397-400
    Number of pages4
    JournalFEBS Letters
    Volume208
    Issue number2
    Publication statusPublished - 24 Nov 1986

    Keywords

    • Rats
    • Animals
    • Calcium
    • Cations
    • Adenine Nucleotides
    • Cytoplasm
    • Ion Channels
    • Insulinoma
    • Cell Membrane
    • Adenoma, Islet Cell
    • Adenosine
    • Cell Line

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