• Front Cell Neurosci · Jan 2014

    The role of α-E-catenin in cerebral cortex development: radial glia specific effect on neuronal migration.

    • Marie-Theres Schmid, Franziska Weinandy, Michaela Wilsch-Bräuninger, Wieland B Huttner, Silvia Cappello, and Magdalena Götz.
    • Helmholtz Zentrum München, National Research Center for Environmental Health, Institute of Stem Cell Research Neuherberg/Munich, Germany.
    • Front Cell Neurosci. 2014 Jan 1; 8: 215.

    AbstractDuring brain development, radial glial cells possess an apico-basal polarity and are coupled by adherens junctions (AJs) to an F-actin belt. To elucidate the role of the actin, we conditionally deleted the key component α-E-catenin in the developing cerebral cortex. Deletion at early stages resulted in severe disruption of tissue polarity due to uncoupling of AJs with the intracellular actin fibers leading to the formation of subcortical band heterotopia. Interestingly, this phenotype closely resembled the phenotype obtained by conditional RhoA deletion, both in regard to the macroscopic subcortical band heterotopia and the subcellular increase in G-actin/F-actin ratio. These data therefore together corroborate the role of the actin cytoskeleton and its anchoring to the AJs for neuronal migration disorders.

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