The specification of cortical subcerebral projection neurons depends on the direct repression of TBR1 by CTIP1/BCL11a

José Cánovas, F. Andrés Berndt, Hugo Sepúlveda, Rodrigo Aguilar, Felipe A. Veloso, Martín Montecino, Carlos Oliva, Juan C. Maass, Jimena Sierralta, Manuel Kukuljan

Producción científica: Contribución a una revistaArtículorevisión exhaustiva

44 Citas (Scopus)

Resumen

The acquisition of distinct neuronal fates is fundamental for the function of the cerebral cortex. We find that the development of subcerebral projections from layer 5 neurons in the mouse neocortex depends on the high levels of expression of the transcription factor CTIP1; CTIP1 is coexpressed with CTIP2 in neurons that project to subcerebral targets and with SATB2 in those that project to the contralateral cortex. CTIP1 directly represses Tbr1 in layer 5, which appears as a critical step for the acquisition of the subcerebral fate. In contrast, lower levels of CTIP1 in layer 6 are required for TBR1 expression, which directs the corticothalamic fate. CTIP1 does not appear to play a critical role in the acquisition of the callosal projection fate in layer 5. These findings unravel a key step in the acquisition of cell fate for closely related corticofugal neurons and indicate that differential dosages of transcriptions factors are critical to specify different neuronal identities.

Idioma originalInglés
Páginas (desde-hasta)7552-7564
Número de páginas13
PublicaciónJournal of Neuroscience
Volumen35
N.º19
DOI
EstadoPublicada - 13 may. 2015

Áreas temáticas de ASJC Scopus

  • Neurociencias General

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