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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 

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NGF signaling in sensory neurons: evidence that early endosomes carry NGF retrograde signals.

Target-derived NGF promotes the phenotypic maintenance of mature dorsal root ganglion (DRG) nociceptive neurons. Here, we provide in vivo and in vitro evidence for the presence within DRG neurons of endosomes containing NGF, activated TrkA, and signaling proteins of the Rap1/Erk1/2, p38MAPK, and PI3K/Akt pathways. Signaling endosomes were shown to be retrogradely transported in the isolated sciatic nerve in vitro. NGF injection in the peripheral target of DRG neurons increased the retrograde transport of p-Erk1/2, p-p38, and pAkt in these membranes. Conversely, NGF antibody injections decreased the retrograde transport of p-Erk1/2 and p-p38. Our results are evidence that signaling endosomes, with the characteristics of early endosomes, convey NGF signals from the target of nociceptive neurons to their cell bodies.[1]

References

  1. NGF signaling in sensory neurons: evidence that early endosomes carry NGF retrograde signals. Delcroix, J.D., Valletta, J.S., Wu, C., Hunt, S.J., Kowal, A.S., Mobley, W.C. Neuron (2003) [Pubmed]
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