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Early chromatin shaping predetermines multipotent vagal neural crest into neural, neuronal and mesenchymal lineages.

ABSTRACT: The enteric nervous system (ENS) predominantly originates from vagal neural crest (VNC) cells that emerge from the caudal hindbrain, invade the foregut and populate the gastrointestinal tract. However, the gene regulatory network (GRN) orchestrating the early specification of VNC remains unknown. Using an EdnrB enhancer, we generated a comprehensive temporal map of the chromatin and transcriptional landscape of VNC in the avian model, revealing three VNC cell clusters (neural, neurogenic and mesenchymal), each predetermined epigenetically prior to neural tube delamination. We identify and functionally validate regulatory cores (Sox10/Tfap2B/SoxB/Hbox) mediating each programme and elucidate their combinatorial activities with other spatiotemporally specific transcription factors (bHLH/NR). Our global deconstruction of the VNC-GRN in vivo sheds light on critical early regulatory mechanisms that may influence the divergent neural phenotypes in enteric neuropathies.

SUBMITTER: Ling ITC 

PROVIDER: S-EPMC7188519 | biostudies-literature | 2019 Dec

REPOSITORIES: biostudies-literature

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Early chromatin shaping predetermines multipotent vagal neural crest into neural, neuronal and mesenchymal lineages.

Ling Irving T C ITC   Sauka-Spengler Tatjana T  

Nature cell biology 20191202 12

The enteric nervous system (ENS) predominantly originates from vagal neural crest (VNC) cells that emerge from the caudal hindbrain, invade the foregut and populate the gastrointestinal tract. However, the gene regulatory network (GRN) orchestrating the early specification of VNC remains unknown. Using an EdnrB enhancer, we generated a comprehensive temporal map of the chromatin and transcriptional landscape of VNC in the avian model, revealing three VNC cell clusters (neural, neurogenic and mes  ...[more]

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