Tissue interactions, cell signaling and transcriptional control in the cranial mesoderm during craniofacial development
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AbstractThe cranial neural crest and the cranial mesoderm are the source of tissues from which the bone and cartilage of the skull, face and jaws are constructed. The development of the cranial mesoderm is not well studied, which is inconsistent with its importance in craniofacial morphogenesis as a source of precursor tissue of the chondrocranium, muscles, vasculature and connective tissues, mechanical support for tissue morphogenesis, and the signaling activity that mediate interactions with the cranial neural crest. Phenotypic analysis of conditional knockout mouse mutants, complemented by the transcriptome analysis of differentially enriched genes in the cranial mesoderm and cranial neural crest, have identified signaling pathways that may mediate cross-talk between the two tissues. In the cranial mesenchyme, Bmp4 is expressed in the mesoderm cells while its signaling activity could impact on both the mesoderm and the neural crest cells. In contrast, Fgf8 is predominantly expressed in the cranial neural crest cells and it influences skeletal development and myogenesis in the cranial mesoderm. WNT signaling, which emanates from the cranial neural crest cells, interacts with BMP and FGF signaling in monitoring the switch between tissue progenitor expansion and differentiation. The transcription factor Twist1, a critical molecular regulator of many aspects of craniofacial development, coordinates the activity of the above pathways in cranial mesoderm and cranial neural crest tissue compartments.
All Author(s) ListFan XC, Loebel DAF, Bildsoe H, Wilkie EE, Qin J, Wang JW, Tam PPL
Journal nameAIMS Genetics
Volume Number3
Issue Number1
Pages74 - 98
LanguagesEnglish-United Kingdom
KeywordsCranial mesoderm; Cranial neural crest; Craniofacial development; Mesenchymal maintenance; Transcriptional regulation; Twist1
Web of Science Subject CategoriesGenetics & Heredity

Last updated on 2021-27-09 at 05:57