TY - JOUR
T1 - Pbx Regulates Patterning of the Cerebral Cortex in Progenitors and Postmitotic Neurons
AU - Golonzhka, Olga
AU - Nord, Alex
AU - Tang, Paul L F
AU - Lindtner, Susan
AU - Ypsilanti, Athena R
AU - Ferretti, Elisabetta
AU - Visel, Axel
AU - Selleri, Licia
AU - Rubenstein, John L R
N1 - Copyright © 2015 Elsevier Inc. All rights reserved.
PY - 2015/12/16
Y1 - 2015/12/16
N2 - We demonstrate using conditional mutagenesis that Pbx1, with and without Pbx2(+/-) sensitization, regulates regional identity and laminar patterning of the developing mouse neocortex in cortical progenitors (Emx1-Cre) and in newly generated neurons (Nex1-Cre). Pbx1/2 mutants have three salient molecular phenotypes of cortical regional and laminar organization: hypoplasia of the frontal cortex, ventral expansion of the dorsomedial cortex, and ventral expansion of Reelin expression in the cortical plate of the frontal cortex, concomitant with an inversion of cortical layering in the rostral cortex. Molecular analyses, including PBX ChIP-seq, provide evidence that PBX promotes frontal cortex identity by repressing genes that promote dorsocaudal fate.
AB - We demonstrate using conditional mutagenesis that Pbx1, with and without Pbx2(+/-) sensitization, regulates regional identity and laminar patterning of the developing mouse neocortex in cortical progenitors (Emx1-Cre) and in newly generated neurons (Nex1-Cre). Pbx1/2 mutants have three salient molecular phenotypes of cortical regional and laminar organization: hypoplasia of the frontal cortex, ventral expansion of the dorsomedial cortex, and ventral expansion of Reelin expression in the cortical plate of the frontal cortex, concomitant with an inversion of cortical layering in the rostral cortex. Molecular analyses, including PBX ChIP-seq, provide evidence that PBX promotes frontal cortex identity by repressing genes that promote dorsocaudal fate.
U2 - 10.1016/j.neuron.2015.10.045
DO - 10.1016/j.neuron.2015.10.045
M3 - Journal article
C2 - 26671461
SN - 0896-6273
VL - 88
SP - 1192
EP - 1207
JO - Neuron
JF - Neuron
IS - 6
ER -