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RBP4 AND craniosynostosis

Victoria D Leitch, Prem P Dwivedi, Peter J Anderson, Barry C Powell
Craniosynostosis is a developmental disorder of the skull arising from premature bony fusion of cranial sutures, the sites of skull bone growth. In a recent gene microarray study, we demonstrated that retinol-binding protein 4 (RBP4) was the most highly downregulated gene in suture tissue during the pathological process of premature bony fusion. To gain insight into the function of RBP4 in cranial sutures, we analysed primary cells cultured from human cranial suture mesenchyme. These cells express RBP4 but not CRBP1, cellular retinol-binding protein 1, the typical cytoplasmic retinol storage protein...
January 2013: Histochemistry and Cell Biology
Aaron W James, Benjamin Levi, Yue Xu, Antoine L Carre, Michael T Longaker
BACKGROUND: In utero retinoid exposure results in numerous craniofacial malformations, including craniosynostosis. Although many malformations associated with retinoic acid syndrome are associated with neural crest defects, the specific mechanisms of retinoid-induced craniosynostosis remain unclear. The authors used the culture of mouse cranial suture-derived mesenchymal cells to probe the potential cellular mechanisms of this teratogen to better elucidate mechanisms of retinoid-induced suture fusion...
May 2010: Plastic and Reconstructive Surgery
Anna K Coussens, Ian P Hughes, C Phillip Morris, Barry C Powell, Peter J Anderson
Osteogenic supplements are a requirement for osteoblastic cell differentiation during in vitro culture of human calvarial suture-derived cell populations. We investigated the ability of ascorbic acid and beta-glycerophosphate with and without the addition of dexamethasone to stimulate in vivo-like osteoblastic differentiation. Cells were isolated from unfused and prematurely fused suture tissue from patients with syndromic and non-syndromic craniosynostosis and cultured in each osteogenic medium for varying lengths of time...
January 2009: Journal of Cellular Physiology
Anna K Coussens, Christopher R Wilkinson, Ian P Hughes, C Phillip Morris, Angela van Daal, Peter J Anderson, Barry C Powell
BACKGROUND: Craniosynostosis, the premature fusion of calvarial sutures, is a common craniofacial abnormality. Causative mutations in more than 10 genes have been identified, involving fibroblast growth factor, transforming growth factor beta, and Eph/ephrin signalling pathways. Mutations affect each human calvarial suture (coronal, sagittal, metopic, and lambdoid) differently, suggesting different gene expression patterns exist in each human suture. To better understand the molecular control of human suture morphogenesis we used microarray analysis to identify genes differentially expressed during suture fusion in children with craniosynostosis...
2007: BMC Genomics
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