Signaling from axon guidance receptors.
Determining how axon guidance receptors transmit signals to allow precise pathfinding decisions is fundamental to our understanding of nervous system development and may suggest new strategies to promote axon regeneration after injury or disease. Signaling mechanisms that act downstream of four prominent families of axon guidance cues--netrins, semaphorins, ephrins, and slits--have been extensively studied in both invertebrate and vertebrate model systems. Although details of these signaling mechanisms are still fragmentary and there appears to be considerable diversity in how different guidance receptors regulate the motility of the axonal growth cone, a number of common themes have emerged. Here, we review recent insights into how specific receptors for each of these guidance cues engage downstream regulators of the growth cone cytoskeleton to control axon guidance.
Bashaw
Greg J
GJ
Department of Neuroscience, University of Pennsylvania School of Medicine, Philadelphia, Pennsylvania 19104, USA. gbashaw@mail.med.upenn.edu
Klein
Rüdiger
R
D000818:Animals; D001369:Axons; D003593:Cytoplasm / Q000378:metabolism; D006868:Hydrolysis; D051379:Mice; D011956:Receptors, Cell Surface / Q000378:metabolism*; D015398:Signal Transduction
D011956:Receptors, Cell Surface
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