Cerebral Cortex, Vol. 13, No. 6, 627-633,
June 2003
© 2003 Oxford University Press
The Reelin Signaling Pathway: Some Recent Developments
Developmental Genetics Unit, UCL GEDE 7382, 73 Avenue E. Mounier, B1200 Brussels and , 1 Neurobiology Unit 2853, FUNDP Medical School, 61 Rue de Bruxelles, B5000 Namur, Belgium
Address correspondence to André M. Goffinet, Developmental Genetics Unit, UCL GEDE 7382, 73 Avenue E. Mounier, B1200 Brussels, Belgium. Email: andre.goffinet{at}gede.ucl.ac.be.
The Reelin signaling pathway plays a key role in the architectonic development of the central nervous system. Extracellular Reelin binds to receptors of the lipoprotein receptor family and induces tyrosine phosphorylation of the adaptor Dab1. In this paper, we discuss three recent developments. First, we show that the central part of Reelin is involved in receptor binding and signal activation as reflected in Dab1 phosphorylation. Second, we examine the genomic organization, alternative splicing and promoter use of the Dab1 gene, which hint at a particularly complex regulation. Third, we present preliminary studies by in situ hybridization that demonstrate regulated expression of Reelin receptors and Dab1 by radial precursors in the ventricular zone.
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