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Enteric neural crest cells regulate vertebrate stomach patterning and differentiation

Abstract : In vertebrates, the digestive tract develops from a uniform structure where reciprocal epithelial-mesenchymal interactions pattern this complex organ into regions with specific morphologies and functions. Concomitant with these early patterning events, the primitive GI tract is colonized by the vagal enteric neural crest cells (vENCCs), a population of cells that will give rise to the enteric nervous system (ENS), the intrinsic innervation of the GI tract. The influence of vENCCs on early patterning and differentiation of the GI tract has never been evaluated. In this study, we report that a crucial number of vENCCs is required for proper chick stomach development, patterning and differentiation. We show that reducing the number of vENCCs by performing vENCC ablations induces sustained activation of the BMP and Notch pathways in the stomach mesenchyme and impairs smooth muscle development.
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Sandrine Faure, J. Mckey, S. Sagnol, Pascal de Santa Barbara. Enteric neural crest cells regulate vertebrate stomach patterning and differentiation. Development (Cambridge, England), Company of Biologists, 2015, 142 (2), pp.331-342. ⟨10.1242/dev.118422⟩. ⟨hal-01753298⟩

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