The molecular mechanisms of PITX2 in tooth development and enamel defects in Axenfeld-Rieger Syndrome
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چکیده
The molecular mechanisms of PITX2 in tooth development and enamel defects in Axenfeld-Rieger Syndrome." PhD has been approved by the Examining Committee for the thesis requirement for the Doctor of Philosophy degree in Anatomy and Cell Biology at the December 2013 graduation. ii To my parents, Tianhua and Zhibin, for their endless love, support and encouragement. I would not have contemplated this road if not for them. iii ACKNOWLEDGEMENTS
منابع مشابه
A model for the molecular underpinnings of tooth defects in Axenfeld-Rieger syndrome.
Patients with Axenfeld-Rieger Syndrome (ARS) present various dental abnormalities, including hypodontia, and enamel hypoplasia. ARS is genetically associated with mutations in the PITX2 gene, which encodes one of the earliest transcription factors to initiate tooth development. Thus, Pitx2 has long been considered as an upstream regulator of the transcriptional hierarchy in early tooth developm...
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Axenfeld-Rieger syndrome (ARS) patients with PITX2 point mutations exhibit a wide range of clinical features including mild craniofacial dysmorphism and dental anomalies. Identifying new PITX2 targets and transcriptional mechanisms are important to understand the molecular basis of these anomalies. Chromatin immunoprecipitation assays demonstrate PITX2 binding to the FoxJ1 promoter and PITX2C t...
متن کاملA zebrafish model of axenfeld-rieger syndrome reveals that pitx2 regulation by retinoic acid is essential for ocular and craniofacial development.
PURPOSE The homeobox transcription factor PITX2 is a known regulator of mammalian ocular development, and human PITX2 mutations are associated with Axenfeld-Rieger syndrome (ARS). However, the treatment of patients with ARS remains mostly supportive and palliative. METHODS The authors used molecular genetic, pharmacologic, and embryologic techniques to study the biology of ARS in a zebrafish ...
متن کاملCurrent molecular understanding of Axenfeld-Rieger syndrome.
Axenfeld-Rieger syndrome (ARS) is a rare autosomal dominant inherited disorder affecting the development of the eyes, teeth and abdomen. The syndrome is characterised by complete penetrance but variable expressivity. The ocular component of the ARS phenotype has acquired most clinical attention and has been dissected into a spectrum of developmental eye disorders, of which open-angle glaucoma r...
متن کاملA novel PITX2 mutation in a Chinese family with Axenfeld-Rieger syndrome
PURPOSE Axenfeld-Rieger syndrome (ARS) is an autosomal dominant disorder characterized by extraocular anomalies and developmental defects of the anterior segment. PITX2 (paired-like homeodomain transcription factor 2) is considered the major causative gene. In this study, we characterized the molecular defect in PITX2 in a Chinese family with ARS. METHODS Two generations of the family with AR...
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