General synthesis of β-alanine-containing spider polyamine toxins and discovery of nephila polyamine toxins 1 and 8 as highly potent inhibitors of ionotropic glutamate receptors

Simon Lucas, Mette H Poulsen, Niels G Nørager, Anne F Barslund, Tinna B Bach, Anders S Kristensen, Kristian Strømgaard

    8 Citations (Scopus)

    Abstract

    Certain spiders contain large pools of polyamine toxins, which are putative pharmacological tools awaiting further discovery. Here we present a general synthesis strategy for this class of toxins and prepare five structurally varied polyamine toxins. Electrophysiological testing at three ionotropic glutamate receptor subtypes reveals that two of these, Nephila polyamine toxins 1 (NPTX-1) and 8 (NPTX-8), comprise intriguing pharmacological activities by having subnanomolar IC(50) values at kainate receptors.
    Original languageEnglish
    JournalJournal of Medicinal Chemistry
    Volume55
    Issue number22
    Pages (from-to)10297-10301
    Number of pages5
    ISSN0022-2623
    DOIs
    Publication statusPublished - 26 Nov 2012

    Keywords

    • Animals
    • Asparagine
    • Indoleacetic Acids
    • Molecular Structure
    • Polyamines
    • Receptors, Ionotropic Glutamate
    • Receptors, Kainic Acid
    • Spider Venoms
    • Spiders
    • Structure-Activity Relationship
    • Toxins, Biological
    • beta-Alanine

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