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Interneuron Migration from Basal Forebrain to Neocortex: Dependence on Dlx Genes

Science  17 Oct 1997:
Vol. 278, Issue 5337, pp. 474-476
DOI: 10.1126/science.278.5337.474

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Abstract

Although previous analyses indicate that neocortical neurons originate from the cortical proliferative zone, evidence suggests that a subpopulation of neocortical interneurons originates within the subcortical telencephalon. For example, γ-aminobutyric acid (GABA)–expressing cells migrate in vitro from the subcortical telencephalon into the neocortex. The number of GABA-expressing cells in neocortical slices is reduced by separating the neocortex from the subcortical telencephalon. Finally, mice lacking the homeodomain proteins DLX-1 and DLX-2 show no detectable cell migration from the subcortical telencephalon to the neocortex and also have few GABA-expressing cells in the neocortex.

  • * To whom correspondence should be addressed. E-mail: jlrr{at}cgl.ucsf.edu

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