N-syndecan (syndecan-3) is a transmembrane proteoglycan that is abundantly expressed in the major axonal pathways and in the migratory routes of the developing brain. When ligated by heparin-binding (HB) growth-associated molecule (GAM; pleiotrophin), N-syndecan mediates cortactin-Src kinase-dependent neurite outgrowth. However, the functional role of N-syndecan in brain development remains unexplored. In this study, we show that N-syndecan deficiency perturbs the laminar structure of the cerebral cortex as a result of impaired radial migration. In addition, neural migration in the rostral migratory stream is impaired in the N-syndecan-null mice. We suggest that the migration defect depends on impaired HB-GAM-induced Src kinase activation and haptotactic migration. Furthermore, we show that N-syndecan interacts with EGF receptor (EGFR) at the plasma membrane and is required in EGFR-induced neuronal migration. © The Rockefeller University Press.
CITATION STYLE
Hienola, A., Tumova, S., Kulesskiy, E., & Rauvala, H. (2006). N-syndecan deficiency impairs neural migration in brain. Journal of Cell Biology, 174(4), 569–580. https://doi.org/10.1083/jcb.200602043
Mendeley helps you to discover research relevant for your work.