Endosomal transport of neurotrophins: Roles in signaling and neurodegenerative diseases

Francisca C. Bronfman, Claudia A. Escudero, Joachim Weis, Alex Kruttgen

Research output: Contribution to journalReview articlepeer-review

92 Citations (Scopus)

Abstract

The internalization and retrograde axonal transport of neurotrophin receptors is important for their retrograde signal transduction supporting neuronal differentiation, plasticity, and survival. To influence transcription, neurotrophin signals initiated at synapses have to be conveyed retrogradely to the cell body. Signaling endosomes containing neurotrophin receptor signaling complexes mediate retrograde neurotrophin signaling from synapses to the nucleus. Interestingly, many neurodegenerative diseases, including Alzheimer's disease, Niemann Pick disease Type C, and Charcot-Marie-Tooth neuropathies, show alterations of vesicular transport, suggesting that traffic jams within neuronal processes may cause neurodegeneration. Although most of these diseases are complex and may be modulated by diverse pathways contributing to neuronal death, altered neurotrophin transport is emerging as a strong candidate influence on neurodegeneration. In this article, we review the mechanisms of internalization and endocytic trafficking of neurotrophin receptors, and discuss the potential roles of perturbations in neurotrophin trafficking in a number of neurodegenerative diseases.

Original languageEnglish
Pages (from-to)1183-1203
Number of pages21
JournalDevelopmental Neurobiology
Volume67
Issue number9
DOIs
Publication statusPublished - 1 Aug 2007
Externally publishedYes

Keywords

  • BDNF
  • Early endosome
  • Late endosome
  • Neurodegeneration
  • NGF
  • P75 neurotrophin receptor
  • Rab5
  • Rab7
  • Recycling endosome
  • Trk
  • Vesicular trafficking

ASJC Scopus subject areas

  • Developmental Neuroscience
  • Cellular and Molecular Neuroscience

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