Syntaxin 1 is required for DCC/Netrin-1-dependent chemoattraction of migrating neurons from the lower rhombic lip

Tiziana Cotrufo, Rosa María Andrés, Oriol Ros, Francesc Pérez-Brangulí, Ashraf Muhaisen, Giulia Fuschini, Ramón Martínez, Marta Pascual, Joan X. Comella, Eduardo Soriano

Research output: Contribution to journalArticleResearchpeer-review

22 Citations (Scopus)

Abstract

Directed cell migration and axonal guidance are essential steps in neural development that share many molecular mechanisms. The guidance of developing axons and migrating neurons is likely to depend on the precise control of plasmalemma turnover in selected regions of leading edges and growth cones, respectively. Previous results provided evidence of a signaling mechanism that couples chemotropic deleted in colorectal cancer (DCC)/Netrin-1 axonal guidance and exocytosis through Syntaxin1(Sytx1)/TI-VAMP SNARE proteins. Here we studied whether Netrin-1-dependent neuronal migration relies on a similar SNARE mechanism. We show that migrating neurons in the lower rhombic lip (LRL) express several SNARE proteins, and that DCC co-associates with Sytx1 and TI-VAMP in these cells. We also demonstrate that cleavage of Sytx1 by botulinum toxin C1 (BoNT/C1) abolishes Netrin-1-dependent chemoattraction of migrating neurons, and that interference of Sytx1 functions with shRNAs or Sytx1-dominant negatives disrupts Netrin-1-dependent chemoattraction of LRL neurons. These findings indicate that a Sytx1/DCC interaction is required for Netrin-1 guidance of migrating neurons, thereby highlighting a relationship between guidance signaling and SNARE proteins that regulate membrane turnover. © 2012 The Authors. European Journal of Neuroscience © 2012 Federation of European Neuroscience Societies and Blackwell Publishing Ltd.
Original languageEnglish
Pages (from-to)3152-3164
JournalEuropean Journal of Neuroscience
Volume36
DOIs
Publication statusPublished - 1 Nov 2012

Keywords

  • Membrane turnover
  • Mouse
  • Nervous system development
  • SNARE proteins

Fingerprint Dive into the research topics of 'Syntaxin 1 is required for DCC/Netrin-1-dependent chemoattraction of migrating neurons from the lower rhombic lip'. Together they form a unique fingerprint.

Cite this