title: Development of oral epithelial cell line ROE2 with differentiation potential from transgenic rats harboring temperature-sensitive simian virus40 large T-antigen gene.
abstract: We have developed an immortalized oral epithelial cell line, ROE2, from fetal transgenic rats harboring temperature-sensitive simian virus 40 large T-antigen gene. The cells grew continuously at either a permissive temperature of 33°C or an intermediate temperature of 37°C. At the nonpermissive temperature of 39°C, on the other hand, growth decreased significantly, and the Sub-G1 phase of the cell cycle increased, indicating that the cells undergo apoptosis at a nonpermissive temperature. Histological and immunocytochemical analyses revealed that ROE2 cells at 37°C had a stratified epithelial-like morphology and expressed cytokeratins Krt4 and Krt13, marker proteins for oral nonkeratinized epithelial cells. Global-scale comprehensive microarray analysis, coupled with bioinformatics tools, demonstrated a significant gene network that was obtained from the upregulated genes. The gene network contained 16 genes, including Cdkn1a, Fos, Krt13, and Prdm1, and was associated mainly with the biological process of skin development in the category of biological functions, organ development. These four genes were validated by quantitative real-time polymerase chain reaction, and the results were nearly consistent with the microarray data. It is therefore anticipated that this cell line will be useful as an in vitro model for studies such as physiological functions, as well as for gene expression in oral epithelial cells.
authors: Division of Molecular Genetics Research, Life Science Research Center, University of Toyama, 2630 Sugitani, Toyama 930-0194, Japan.
authors: Yoshiaki
authors: Y
authors: Tabuchi
authors: Shigehito
authors: S
authors: Wada
authors: Mika
authors: M
authors: Ikegame
authors: Ayako
authors: A
authors: Kariya
authors: Yukihiro
authors: Y
authors: Furusawa
authors: Nobuhiko
authors: N
authors: Hoshi
authors: Tatsuya
authors: T
authors: Yunoki
authors: Nobuo
authors: N
authors: Suzuki
authors: Ichiro
authors: I
authors: Takasaki
authors: Takashi
authors: T
authors: Kondo
authors: Yoshihisa
authors: Y
authors: Suzuki
mesh_terms: D000818:Animals; D000957:Antigens, Viral, Tumor / Q000235:genetics*; D017209:Apoptosis / Q000235:genetics; D002454:Cell Differentiation / Q000235:genetics*; D002460:Cell Line; D050759:Cyclin-Dependent Kinase Inhibitor p21; D004847:Epithelial Cells / Q000166:cytology* / Q000473:pathology; D016193:G1 Phase / Q000235:genetics; D015870:Gene Expression / Q000235:genetics; D053263:Gene Regulatory Networks / Q000235:genetics*; D053535:Keratin-13; D053527:Keratin-4; D009055:Mouth / Q000166:cytology* / Q000196:embryology; D051381:Rats; D055647:Rats, Transgenic; D013539:Simian virus 40 / Q000276:immunology*; D013696:Temperature
chemical_list: D000957:Antigens, Viral, Tumor; C493958:Cdkn1a protein, rat; D050759:Cyclin-Dependent Kinase Inhibitor p21; D053535:Keratin-13; D053527:Keratin-4