β1 integrins in radial glia but not in migrating neurons are essential for the formation of cell layers in the cerebral cortex

被引:107
|
作者
Belvindrah, Richard [1 ]
Graus-Porta, Diana [2 ]
Goebbels, Sandra [3 ]
Nave, Klaus-Armin [3 ]
Mueller, Ulrich [1 ]
机构
[1] Scripps Res Inst, Inst Childhood & Neglected Dis, Dept Cell Biol, La Jolla, CA 92073 USA
[2] Novartis Inst BioMed Res, Novartis Pharma Serv, CH-4002 Basel, Switzerland
[3] Max Planck Inst Expt Med, Dept Neurogenet, D-37075 Gottingen, Germany
来源
JOURNAL OF NEUROSCIENCE | 2007年 / 27卷 / 50期
关键词
integrin; cell migration; radial glia; cerebral cortex; nervous system; reelin;
D O I
10.1523/JNEUROSCI.4494-07.2007
中图分类号
Q189 [神经科学];
学科分类号
071006 ;
摘要
Radial glial cells in the cerebral cortex serve as progenitors for neurons and glia and guide the migration of cortical neurons. The integrin alpha 3 beta 1 is thought to mediate interactions of migrating neurons with radial glial cells and to function as a receptor for the reelin signaling molecule. Here, we challenge this view and demonstrate that beta 1 integrins in migrating neurons are not essential for the formation of cell layers in the cerebral cortex. Cortical cell layers also form normally in mice deficient in the integrin alpha 3 beta 1. However, we provide evidence that beta 1 integrins in radial glia control the morphological differentiation of both glia and neurons. We conclude that beta 1 integrins in radial glia are required for the proper development of the cerebral cortex, whereas beta 1 integrins in migrating neurons are not essential for glial-guided migration and reelin signaling.
引用
收藏
页码:13854 / 13865
页数:12
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