Cerebral Cortex, Vol. 13, No. 2, 203-214,
February 2003
© 2003 Oxford University Press
Early Differences in Axonal Outgrowth, Cell Migration and GABAergic Differentiation Properties between the Dorsal and Lateral Cortex
Ecole Normale Supérieure, CNRS UMR 8542, Equipe Régionalisation Nerveuse, 46 Rue dUlm, 75230 Paris Cedex 05, France
Address correspondence to Christine Métin, Ecole Normale Supérieure, CNRS UMR 8542, Equipe Régionalisation Nerveuse, 46 Rue dUlm 75230 Paris Cedex 05, France. Email: metin{at}biologie.ens.fr.
The regionalization of the cerebral cortex proceeds gradually from early embryonic stages under the control of transcription factors that are expressed in gradients. Two phases can be distinguished at the beginning of cortical development: the genesis of a precocious and transient structure, the preplate, which is followed by development of the cortical plate within the preplate. Cellular indices of early regionalization have not yet been described either in the preplate or in the early cortical plate. In the present study, we identify two regions, lateral and dorsal, in the mouse cortex embryo, which differ strongly in the functional properties of their early neurons. By using culture experiments and grafts on organotypic slices, we show that the earliest neurons in the dorsal cortex extend axons before and more rapidly than the earliest neurons in the lateral cortex. In contrast to the lateral cortex, the dorsal cortex differentiates neurons migrating along axons in vitro. These cells express markers of the GABAergic lineage. Early differences between the two regions suggest that the dorsal part of the cortex generates early neurons with particular intrinsic properties that may in turn specifically influence the later development of the cortical plate in this domain.
![]()
CiteULike
Connotea
Del.icio.us What's this?
This article has been cited by other articles:
![]() |
R. L. M. Lett, W. Wang, and T. P. O'Connor Semaphorin 5B Is a Novel Inhibitory Cue for Corticofugal Axons Cereb Cortex, October 8, 2008; (2008) bhn179v1. [Abstract] [Full Text] [PDF] |
||||
![]() |
M. Fogarty, M. Grist, D. Gelman, O. Marin, V. Pachnis, and N. Kessaris Spatial Genetic Patterning of the Embryonic Neuroepithelium Generates GABAergic Interneuron Diversity in the Adult Cortex J. Neurosci., October 10, 2007; 27(41): 10935 - 10946. [Abstract] [Full Text] [PDF] |
||||
![]() |
C. Metin, C. Alvarez, D. Moudoux, T. Vitalis, C. Pieau, and Z. Molnar Conserved pattern of tangential neuronal migration during forebrain development Development, August 1, 2007; 134(15): 2815 - 2827. [Abstract] [Full Text] [PDF] |
||||
![]() |
L. Zhou, Y. Jossin, and A. M. Goffinet Identification of Small Molecules That Interfere with Radial Neuronal Migration and Early Cortical Plate Development Cereb Cortex, January 1, 2007; 17(1): 211 - 220. [Abstract] [Full Text] [PDF] |
||||
![]() |
R. S. O'Connor, S. T. Mills, K. A. Jones, S. N. Ho, and G. K. Pavlath A combinatorial role for NFAT5 in both myoblast migration and differentiation during skeletal muscle myogenesis J. Cell Sci., January 1, 2007; 120(1): 149 - 159. [Abstract] [Full Text] [PDF] |
||||
![]() |
E. Vergano-Vera, M. J. Yusta-Boyo, F. de Castro, A. Bernad, F. de Pablo, and C. Vicario-Abejon Generation of GABAergic and dopaminergic interneurons from endogenous embryonic olfactory bulb precursor cells Development, November 1, 2006; 133(21): 4367 - 4379. [Abstract] [Full Text] [PDF] |
||||
![]() |
A. Bellion, J.-P. Baudoin, C. Alvarez, M. Bornens, and C. Metin Nucleokinesis in Tangentially Migrating Neurons Comprises Two Alternating Phases: Forward Migration of the Golgi/Centrosome Associated with Centrosome Splitting and Myosin Contraction at the Rear J. Neurosci., June 15, 2005; 25(24): 5691 - 5699. [Abstract] [Full Text] [PDF] |
||||
![]() |
C. Wonders and S. A. Anderson Cortical Interneurons and Their Origins Neuroscientist, June 1, 2005; 11(3): 199 - 205. [Abstract] [PDF] |
||||
![]() |
Q. Xu, I. Cobos, E. De La Cruz, J. L. Rubenstein, and S. A. Anderson Origins of Cortical Interneuron Subtypes J. Neurosci., March 17, 2004; 24(11): 2612 - 2622. [Abstract] [Full Text] [PDF] |
||||




