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Snf2l regulates Foxg1-dependent progenitor cell expansion in the developing brain.

Authors:
Yip DJ, Corcoran CP, Alvarez-Saavedra M, DeMaria A, Rennick S, Mears AJ, Rudnicki MA, Messier C, Picketts DJ
Affiliation:
Journal:
Developmental cell

Abstract

Balancing progenitor cell self-renewal and differentiation is essential for brain development and is regulated by the activity of chromatin remodeling complexes. Nevertheless, linking chromatin changes to specific pathways that control cortical histogenesis remains a challenge. Here we identify a genetic interaction between the chromatin remodeler Snf2l and Foxg1, a key regulator of neurogenesis. Snf2l mutant mice exhibit forebrain hypercellularity arising from increased Foxg1 expression, increased progenitor cell expansion, and delayed differentiation. We demonstrate that Snf2l binds to the Foxg1 locus at midneurogenesis and that the phenotype is rescued by reducing Foxg1 dosage, thus revealing that Snf2l and Foxg1 function antagonistically to regulate brain size.

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