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Integration of neuronal clones in the radial cortical columns by EphA and ephrin-A signalling

Author

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  • Masaaki Torii

    (Yale University School of Medicine, 333 Cedar Street, New Haven, Connecticut 06510, USA
    Keck School of Medicine of USC, Los Angeles, California 90089, USA)

  • Kazue Hashimoto-Torii

    (Yale University School of Medicine, 333 Cedar Street, New Haven, Connecticut 06510, USA)

  • Pat Levitt

    (Keck School of Medicine of USC, Los Angeles, California 90089, USA)

  • Pasko Rakic

    (Yale University School of Medicine, 333 Cedar Street, New Haven, Connecticut 06510, USA)

Abstract

Neural development: of columns and clones A feature of the development of the cerebral cortex in the embryo is the migration of neocortical excitatory neurons along radial glial fibres. Less studied than this movement along columnar structures is the regulation and outcome of the tangential mixing of clonal populations of neural progenitors migrating from their origin and encountering those travelling from other proliferative units. Rakic and colleagues report evidence that EphA/ephrin-A signalling modulates this mixing of populations during circuit development. In the absence of ephrin-A, tangential migration is disrupted, leading to impaired lateral dispersion and abnormal columnar organization. Aberrant columnar organization is thought to cause functional impairment within circuits.

Suggested Citation

  • Masaaki Torii & Kazue Hashimoto-Torii & Pat Levitt & Pasko Rakic, 2009. "Integration of neuronal clones in the radial cortical columns by EphA and ephrin-A signalling," Nature, Nature, vol. 461(7263), pages 524-528, September.
  • Handle: RePEc:nat:nature:v:461:y:2009:i:7263:d:10.1038_nature08362
    DOI: 10.1038/nature08362
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