Journal
TRAFFIC
Volume 17, Issue 2, Pages 87-101Publisher
WILEY
DOI: 10.1111/tra.12345
Keywords
amyotrophic lateral sclerosis; BMP; Drosophila; endosome; exosome; hereditary spastic paraplegia; signaling; synapse; Wg
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Funding
- NIH [NS60947]
- Pew Scholar award
- Blazeman Foundation
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Neurons require target-derived autocrine and paracrine growth factors to maintain proper identity, innervation, homeostasis and survival. Neuronal growth factor signaling is highly dependent on membrane traffic, both for the packaging and release of the growth factors themselves, and for regulation of intracellular signaling by their transmembrane receptors. Here, we review recent findings from the Drosophila larval neuromuscular junction (NMJ) that illustrate how specific steps of intracellular traffic and inter-organelle interactions impinge on signaling, particularly in the bone morphogenic protein, Wingless and c-Jun-activated kinase pathways, regulating elaboration and stability of NMJ arbors, construction of synapses and synaptic transmission and homeostasis. These membrane trafficking and signaling pathways have been implicated in human motor neuron diseases including amyotrophic lateral sclerosis and hereditary spastic paraplegia, highlighting their importance for neuronal health and survival.
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