Σφακιανάκης Αλέξανδρος
ΩτοΡινοΛαρυγγολόγος
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alsfakia@gmail.com

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Τετάρτη 19 Ιουλίου 2017

Expression of planar cell polarity genes during mouse tooth development

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Publication date: November 2017
Source:Archives of Oral Biology, Volume 83
Author(s): Nobuko Obara, Yuko Suzuki, Kazuharu Irie, Shunichi Shibata
ObjectivePlanar cell polarity (PCP) refers to the cell polarity across the tissue plane and controls various cell behaviors and structures. Although the expression of several PCP signaling components has been detected in tooth germs, knowledge of the gene expression patterns of these PCP components during tooth development remains incomplete. The aim of this study is to characterize the temporal and spatial changes in PCP gene expression during tooth development.DesignExpression of Celsr1 and 2, Fzd3 and 6, Vangl1 and 2, and Dvl1-3 genes was analyzed in mouse molar germs from the bud to the bell stage using in situ hybridization.ResultsAt the bud stage, all target genes were expressed in all areas of the tooth bud. In the enamel organ at the cap stage, expression of Fzd3 was suppressed in the enamel knot, whereas Fzd6 was strongly expressed there. Expression of Vangl2 was strongly expressed in the inner dental epithelium from the cap stage onwards. In the inner dental epithelium, strong expression of Fzd3, Dvl2 and Vangl2 was noted at the early bell stage, and of Celsr1, Fzd3, Fzd6, Vangl2 and Dvl2 at the bell stage. Furthermore, differentiated odontoblasts strongly expressed Celsr1, Vangl2, and Dvl2.ConclusionThe gene expression patterns delineated in this study improve our understanding of the role(s) of PCP components during tooth development.



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