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Transcriptional Networks Controlled by NKX2-1 in the Development of Forebrain GABAergic Neurons

  • Author(s): Sandberg, M
  • Flandin, P
  • Silberberg, S
  • Su-Feher, L
  • Price, JD
  • Hu, JS
  • Kim, C
  • Visel, A
  • Nord, AS
  • Rubenstein, JLR
  • et al.

Published Web Location

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5319854/
No data is associated with this publication.
Abstract

© 2016 The embryonic basal ganglia generates multiple projection neurons and interneuron subtypes from distinct progenitor domains. Combinatorial interactions of transcription factors and chromatin are thought to regulate gene expression. In the medial ganglionic eminence, the NKX2-1 transcription factor controls regional identity and, with LHX6, is necessary to specify pallidal projection neurons and forebrain interneurons. Here, we dissected the molecular functions of NKX2-1 by defining its chromosomal binding, regulation of gene expression, and epigenetic state. NKX2-1 binding at distal regulatory elements led to a repressed epigenetic state and transcriptional repression in the ventricular zone. Conversely, NKX2-1 is required to establish a permissive chromatin state and transcriptional activation in the sub-ventricular and mantle zones. Moreover, combinatorial binding of NKX2-1 and LHX6 promotes transcriptionally permissive chromatin and activates genes expressed in cortical migrating interneurons. Our integrated approach provides a foundation for elucidating transcriptional networks guiding the development of the MGE and its descendants.

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