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Direct evidence for a colchicine-induced impairment in the mobility of membrane components

F Wunderlich, R Müller, V Speth

    Science (New York, N.Y.)
    |December 14, 1973
    PubMed

    Insights

    Colchicine interacts with Tetrahymena pyriformis cell membranes. This drug impairs the movement of membrane particles, affecting cellular functions.

    Area of Science:

    • Cell Biology
    • Protozoology
    • Membrane Biology

    Background:

    • Colchicine is known to affect microtubule dynamics.
    • The ciliate protozoan Tetrahymena pyriformis possesses complex membrane structures.

    Purpose of the Study:

    • To investigate the interaction of colchicine with the cell membranes of Tetrahymena pyriformis.
    • To determine the effect of colchicine on membrane particle mobility.

    Main Methods:

    • Freeze-etch electron microscopy was employed.
    • Alveolar membranes beneath the plasma membrane were analyzed.

    Main Results:

    • Colchicine was observed to interact with the membranes of Tetrahymena pyriformis.
    • Temperature-induced mobility of membrane-intercalating particles was impaired by colchicine.
    • The effect was observed on particles within the freeze-fractured alveolar membranes.

    Conclusions:

    • Colchicine affects the Tetrahymena pyriformis membrane structure and dynamics.
    • The drug's interaction with membrane particles suggests a role beyond microtubule disruption.

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