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Primate-expressed EPIREGULIN promotes basal progenitor proliferation in the developing neocortex

ABSTRACT: Neocortex expansion during evolution is linked to higher numbers of neurons thought to result from increased proliferative capacity and neurogenic potential of basal progenitors during development. Here, we show that EREG, encoding the growth factor EPIREGULIN, is expressed in the human developing neocortex, but not in the mouse neocortex. Addition of EPIREGULIN to the mouse neocortex increases proliferation of both major basal progenitor types, intermediate basal progenitors and basal radial glia, whereas ablation of EPIREGULIN in human cortical organoids reduces basal progenitor proliferation. Here, we analyzed gene expression changes upon addition of EPIREGULIN to the mouse neocortex for 24 hours using hemisphere rotation culture. We performed fluorescent activated cell sorting to isolate radial glia (RG), intermediate progenitor (IP) cells and neurons (N) based on the nuclear markers Sox2 and Tbr2, and expression of GFP in neurons isolated from a Tubb3::GFP mouse reporter line.

ORGANISM(S): Mus musculus

PROVIDER: GSE228007 | GEO | 2024/02/19

REPOSITORIES: GEO

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