title: Temporo-spatial analysis of Osterix, HNK1 and Sox10 during odontogenesis and maxillaries osteogenesis.
abstract: Cell differentiation is essential for maxillaries and tooth development. Facial mesenchymal tissue is formed by neural crest cells (NC). These cells are highly migratory, giving rise to various cell types, considered with a high level of plasticity, indicating that they contain progenitor cells with a great power of differentiation. In this study, it was analyzed the presence of NC cell progenitors and mesenchymal stem cells (MSC) during maxillaries osteogenesis and odontogenesis in rats. Histological slides were collected in two phases: embryonic age of 15 and 17 days; 2, 4 and 7 days after birth. Immunohistochemistry for MSC markers (Osterix) and NC cells (Sox10, HNK1) was performed. The results showed positive expression for Osterix and HNK1 in undifferentiated ectomesenchymal cells in early and late stages; Sox10 was present only in early stages in undifferentiated cells. All markers were present in differentiated cells. Although the experiments performed do not allow us to explain a possible role for Osx, HNK1 and Sox10 in both differentiated and undifferentiated cells during osteogenesis and odontogenesis, it had shown important results not yet described: the presence of HNK1 and Sox10 in osteoblasts and odontoblasts in late development stages and in the tooth germ epithelial cells and ameloblasts.
authors.affiliation: Postgraduate Dentistry Program, Federal University of Santa Catarina, Florianópolis, SC, Brazil.
authors.forename: Karin Berria
authors.initials: KB
authors.lastname: Tomazelli
authors.affiliation: Pathology Department, Federal University of Santa Catarina, Florianopolis, SC, Brazil.
authors.forename: Filipe
authors.initials: F
authors.lastname: Modolo
authors.affiliation: Cellular Biology, Embryology and Genetics Department, Federal University of Santa Catarina, Florianopolis, SC, Brazil.
authors.forename: Andrea Gonçalves
authors.initials: AG
authors.lastname: Trentin
authors.affiliation: Cellular Biology, Embryology and Genetics Department, Federal University of Santa Catarina, Florianopolis, SC, Brazil.
authors.forename: Ricardo Castilho
authors.initials: RC
authors.lastname: Garcez
authors.affiliation: Morphology Sciences Department, Federal University of Santa Catarina, Florianopolis, SC, Brazil. Electronic address: michelle.biz@ufsc.br.
authors.forename: Michelle Tillmann
authors.initials: MT
authors.lastname: Biz
mesh_terms: D000818:Animals; D002454:Cell Differentiation / Q000502:physiology; D053595:Embryonic Stem Cells / Q000166:cytology*; D059630:Mesenchymal Stem Cells / Q000378:metabolism; D009432:Neural Crest / Q000166:cytology*; D009804:Odontoblasts / Q000166:cytology / Q000378:metabolism; D009805:Odontogenesis / Q000502:physiology*; D010012:Osteogenesis / Q000502:physiology*; D017208:Rats, Wistar; D055757:SOXE Transcription Factors / Q000378:metabolism*; D015238:Sulfotransferases / Q000378:metabolism*; D014083:Tooth Germ / Q000166:cytology; D014157:Transcription Factors / Q000378:metabolism*; D000097811:Carbohydrate Sulfotransferases
chemical_list: D055757:SOXE Transcription Factors; D015238:Sulfotransferases; D014157:Transcription Factors; C527925:Sox10 protein, rat; C495181:Sp7 protein, rat; C499547:Chst10 protein, rat; D000097811:Carbohydrate Sulfotransferases
keywords: Neural crest cells; Odontogenesis; Osteogenesis; Sox10; Transcription factors