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Cadherins are crucial for the radial migration of excitatory projection neurons into the developing neocortical wall. However, the specific cadherins and the signaling pathways that regulate radial migration are not well understood. Here, we show that cadherin 2 (CDH2) and CDH4 cooperate to regulate radial migration in mouse brain via the protein tyrosine phosphatase 1B (PTP1B) and α- and β-catenins. Surprisingly, perturbation of cadherin-mediated signaling does not affect the formation and extension of leading processes of migrating neocortical neurons. Instead, movement of the cell body and nucleus (nucleokinesis) is disrupted. This defect is partially rescued by overexpression of LIS1, a microtubule-associated protein that has previously been shown to regulate nucleokinesis. Taken together, our findings indicate that cadherin-mediated signaling to the cytoskeleton is crucial for nucleokinesis of neocortical projection neurons during their radial migration.

Original publication

DOI

10.1242/dev.132456

Type

Journal article

Journal

Development

Publication Date

15/06/2016

Volume

143

Pages

2121 - 2134

Keywords

CDH2, Cadherin, Catenin, LIS1, Mouse, Nucleokinesis, Radial migration, 1-Alkyl-2-acetylglycerophosphocholine Esterase, Actins, Animals, Cadherins, Catenins, Cell Adhesion, Cell Movement, Cell Nucleus, Centrosome, Gene Expression Regulation, Developmental, Mice, Inbred C57BL, Microtubule-Associated Proteins, Neocortex, Neurons, Protein Binding, Protein Tyrosine Phosphatase, Non-Receptor Type 1, Pseudopodia, Signal Transduction