4.7 Article

Dysregulated PDGFRα signaling alters coronal suture morphogenesis and leads to craniosynostosis through endochondral ossification

期刊

DEVELOPMENT
卷 144, 期 21, 页码 4026-4036

出版社

COMPANY BIOLOGISTS LTD
DOI: 10.1242/dev.151068

关键词

Craniosynostosis; Endochondral ossification; Receptor tyrosine kinase; Neural crest; Mesoderm

资金

  1. NIH/National Institute of Dental and Craniofacial Research [R01DE022363, R00DE024617]

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Craniosynostosis is a prevalent human birth defect characterized by premature fusion of calvarial bones. In this study, we show that tight regulation of endogenous PDGFR alpha activity is required for normal calvarium development in the mouse and that dysregulated PDGFR alpha activity causes craniosynostosis. Constitutive activation of PDGFR alpha leads to expansion of cartilage underlying the coronal sutures, which contribute to suture closure through endochondral ossification, in a process regulated in part by PI3K/AKT signaling. Our results thus identify a novel mechanism underlying calvarial development in craniosynostosis.

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