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

N-syndecan deficiency impairs neural migration in brain.

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.[1]


  1. N-syndecan deficiency impairs neural migration in brain. Hienola, A., Tumova, S., Kulesskiy, E., Rauvala, H. J. Cell Biol. (2006) [Pubmed]
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