title: Characterization of newly established oral cancer cell lines derived from six squamous cell carcinoma and two mucoepidermoid carcinoma cells.
abstract: Since genetic abnormalities of human cancer are greatly geographically dependent, cultural and environmental backgrounds are thought to be closely related to the carcinogenic process. In the present study, eight human cell lines were established by culture from untreated carcinomas of the oral cancer, of which five were from primary oral squamous cell carcinomas (OSC), one from a mucoepidermoid carcinoma (MEC) and one each originating from metastatic OSC and MEC. All the studied tumor lines grew as monolayers, and showed: i) an epithelial origin by the presence of cytokeratin, and ii) tumorigenic potential in nude mice. Western blot analysis revealed i) over expression of EGFR in six of the cell lines ii) decreased expression of E-cadherin in six cell lines compared to normal human oral mucosa. A mutational analysis showed: point mutations of p53 at exon 7, with transversion, and at exon 8, with transition. These well-characterized human YD cell lines should serve as useful tools in the study of the molecular pathogenesis and biological characteristics of head and neck cancer cells, and in the future testing of new therapeutic reagents for oral cancer.
authors.affiliation: Department of Oral Pathology, Oral Cancer Research Institute, Brain Korea 21 Project for Medical Science Yonsei University, School of Dentistry, Seoul 120-752, Korea.
authors.forename: Eun Ju
authors.initials: EJ
authors.lastname: Lee
authors.forename: Jin
authors.initials: J
authors.lastname: Kim
authors.forename: Seoung Ae
authors.initials: SA
authors.lastname: Lee
authors.forename: Eun Jung
authors.initials: EJ
authors.lastname: Kim
authors.forename: Yong Chan
authors.initials: YC
authors.lastname: Chun
authors.forename: Mi Heon
authors.initials: MH
authors.lastname: Ryu
authors.forename: Jong In
authors.initials: JI
authors.lastname: Yook
mesh_terms: D000328:Adult; D000368:Aged; D000818:Animals; D001483:Base Sequence; D014408:Biomarkers, Tumor; D018277:Carcinoma, Mucoepidermoid / Q000235:genetics / Q000378:metabolism* / Q000473:pathology*; D002294:Carcinoma, Squamous Cell / Q000235:genetics / Q000378:metabolism* / Q000473:pathology*; D045744:Cell Line, Tumor; D004847:Epithelial Cells / Q000378:metabolism; D066246:ErbB Receptors / Q000235:genetics / Q000378:metabolism; D005260:Female; D006801:Humans; D008297:Male; D051379:Mice; D008819:Mice, Nude; D008875:Middle Aged; D009062:Mouth Neoplasms / Q000235:genetics / Q000378:metabolism* / Q000473:pathology*; D009154:Mutation / Q000235:genetics; D027383:Papillomaviridae / Q000502:physiology; D016159:Tumor Suppressor Protein p53 / Q000235:genetics / Q000378:metabolism; D023041:Xenograft Model Antitumor Assays
chemical_list: D014408:Biomarkers, Tumor; D016159:Tumor Suppressor Protein p53; D066246:ErbB Receptors