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- W4285031799 abstract "Sizes of neuronal, astroglial and oligodendroglial complements forming the neonatal cerebral cortex largely depend on rates at which pallial stem cells give rise to lineage-committed progenitors and the latter ones progress to mature cell types. Here, we investigated the spatial articulation of pallial stem cells' (SCs) commitment to astrogenesis as well as the progression of committed astroglial progenitors (APs) to differentiated astrocytes, by clonal and kinetic profiling of pallial precursors. We found that caudal-medial (CM) SCs are more prone to astrogenesis than rostro-lateral (RL) ones, while RL-committed APs are more keen to proliferate than CM ones. Next, we assessed the control of these phenomena by 2 key transcription factor genes mastering regionalization of the early cortical primordium, Emx2 and Foxg1, via lentiviral somatic transgenesis, epistasis assays, and ad hoc rescue assays. We demonstrated that preferential CM SCs progression to astrogenesis is promoted by Emx2, mainly via Couptf1, Nfia, and Sox9 upregulation, while Foxg1 antagonizes such progression to some extent, likely via repression of Zbtb20. Finally, we showed that Foxg1 and Emx2 may be implicated-asymmetrically and antithetically-in shaping distinctive proliferative/differentiative behaviors displayed by APs in hippocampus and neocortex." @default.
- W4285031799 created "2022-07-12" @default.
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- W4285031799 date "2022-07-12" @default.
- W4285031799 modified "2023-10-16" @default.
- W4285031799 title "Spatial control of astrogenesis progression by cortical arealization genes" @default.
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- W4285031799 doi "https://doi.org/10.1093/cercor/bhac264" @default.
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