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Transglutaminase 2 expression in the salivary myoepithelial cells of mouse embryo.
Lee, Suk Keun; Kim, Yeon Sook; Lee, Young Joon; Lee, Sang Shin; Song, In Sun; Park, Sang Chul; Chi, Je Geun; Chung, Soo Il.
Afiliación
  • Lee SK; Department of Oral Pathology, College of Dentistry, Kangnung National University, Chibyondong, Gangneung, Gangwondo 210-702, Korea.
Arch Oral Biol ; 50(3): 301-8, 2005 Mar.
Article en En | MEDLINE | ID: mdl-15740708
Earlier a strong transient expression of transglutaminase 2 (TGase 2) localized at the anchoring sites of muscle bundles in human embryo was observed. In this study, we report a similar transient expression of the TGase 2 in the salivary myoepithelial cells of mouse embryo by immunohistochemistry, RNA in situ hybridisation, and RT-PCR. From 35 submandibular glands of mouse embryos and postnatal mice, a consistent expression of TGase 2 in the myoepithelial cells via a stage-specific manner was identified by mono-clonal antibody to TGase 2 immunostaining. A similar expression pattern of TGase 2 in the myoepithelial cells was also observed by RNA in situ hybridisation analysis. The expression of TGase 2 in the salivary epithelium and mesenchyme during the prenatal 14.5-15.5 days was found minimally diffusely spread and became intensely focalised in the myoepithelial cells of salivary acini and ducts during the prenatal 16.5-18.5 days but thereafter gradually decreased until postnatal 7 days and remained weak in postnatal 3 weeks. Such transient rise and fall expressions of TGase 2 were also found with the sequential amount of RT-PCR products during the same period. The alpha-smooth muscle actin (alpha-SMA) as a positive control in the myoepithelial cells of mouse submandibular glands was consistently expressed during the prenatal and postnatal period. These results of transient expression of TGase 2 in the myoepithelial cells coincided with the formation of the dendritic basket structure in the periphery of acini and ducts, suggest a possible catalytic role of transglutaminase in a newly formed cellular matrixes during the cytodifferentiating stage of mouse prenatal and neonatal submandibular glands.
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Bases de datos: MEDLINE Asunto principal: Glándulas Salivales / Transglutaminasas / Proteínas de Unión al GTP / Mesodermo Límite: Animals Idioma: En Revista: Arch Oral Biol Año: 2005 Tipo del documento: Article
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Bases de datos: MEDLINE Asunto principal: Glándulas Salivales / Transglutaminasas / Proteínas de Unión al GTP / Mesodermo Límite: Animals Idioma: En Revista: Arch Oral Biol Año: 2005 Tipo del documento: Article