Neural stem/precursor cells dynamically change their epigenetic landscape to differentially respond to BMP signaling for fate switching during brain development

Sayako Katada, Jun Takouda, Takumi Nakagawa, Mizuki Honda, Katsuhide Igarashi, Takuya Imamura, Yasuyuki Ohkawa, Shoko Sato, Hitoshi Kurumizaka, Kinichi Nakashima

研究成果: ジャーナルへの寄稿学術誌査読

1 被引用数 (Scopus)

抄録

During neocortical development, tight regulation of neurogenesis-to-astrogenesis switching of neural precursor cells (NPCs) is critical to generate a balanced number of each neural cell type for proper brain functions. Accumulating evidence indicates that a complex array of epigenetic modifications and the availability of extracellular factors control the timing of neuronal and astrocytic differentiation. However, our understanding of NPC fate regulation is still far from complete. Bone morphogenetic proteins (BMPs) are renowned as cytokines that induce astrogenesis of gliogenic late-gestational NPCs. They also promote neurogenesis of mid-gestational NPCs, although the underlying mechanisms remain elusive. By performing multiple genome-wide analyses, we demonstrate that Smads, transcription factors that act downstream from BMP signaling, target dramatically different genomic regions in neurogenic and gliogenic NPCs. We found that histone H3K27 trimethylation and DNA methylation around Smad-binding sites change rapidly as gestation proceeds, strongly associated with the alteration of accessibility of Smads to their target binding sites. Furthermore, we identified two lineage-specific Smad-interacting partners-Sox11 for neurogenic and Sox8 for astrocytic differentiation-that further ensure Smad-regulated fate-specific gene induction. Our findings illuminate an exquisite regulation of NPC property change mediated by the interplay between cell-extrinsic cues and -intrinsic epigenetic programs during cortical development.

本文言語英語
ページ(範囲)1431-1444
ページ数14
ジャーナルGenes and Development
35
21-22
DOI
出版ステータス出版済み - 11月 1 2021

!!!All Science Journal Classification (ASJC) codes

  • 遺伝学
  • 発生生物学

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