Growth cones: The mechanism of neurite advance

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Abstract
Growth cones are the highly motile structures found at the tips of growing axons and dendrites (neurites), which extend from neurones, during the development of the nervous system. They function both as detectors and transducers of extrinsic guidance cues and as regions where the neurite cytoskeleton is assembled. Without concerted neurite assembly, advance cannot occur. Assembly of the neurite cytoskeleton in growing neurites chiefly involves microtubule assembly at the growth cone. Some of the factors that may influence microtubule assembly in growth cones are becoming apparent and include posttranslational modification of tubulin itself and microtubule associated proteins, particularly tau and MAP1B.