title: Two different global gene expression profiles in cancer cell lines established from etiologically different oral carcinomas.
abstract: cDNA arrays were used to characterize the gene expression profiles in 6 oral carcinoma cell lines (UT-SCC-10, UT-SCC-14, UT-SCC-37, UT-SCC-54A and UT-SCC-54B, UT-SCC-74) established from 5 patients with different etiological backgrounds, including young patients, classical risk factors and lichen-derived lesions. In addition, 2 human papillomavirus (HPV)-positive cell lines (hypophraryngeal cancer and HPV16 E6/E7-transformed oral keratinocytes) were similarly tested. Two distinct global gene expression profiles with down-regulated and up-regulated patterns were identified, which closely related to the etiologic backgrounds of the primary tumors. Typically in cluster analysis, interferon or interferon-related genes and T- and B-lymphocyte-related genes were up-regulated in lichen-derived carcinoma cell lines. Common to all carcinoma cell lines were 6 genes, which were up- or down-regulated (IgC mu heavy chain constant region, semaphorin, T-cell growth factor, cAMP-dependent protein kinase beta-catalytic subunit, desmocollin 1A/1B precursor and recA-like protein HsRad51). In HPV-positive cell lines, 13 genes were identified with similar down-regulation as shown in our previous studies on HPV-positive genital cell lines. Importantly, all of these genes were also down-regulated in 3 of the 6 oral cancer cell lines. These data suggest that oral carcinomas with different etiological backgrounds can be distinguished by their different global gene expression patterns.
authors.affiliation: Department of Oral Pathology and Oral Radiology and MediCity Research Laboratory, Faculty of Medicine, University of Turku, Lemminkäisenkatu 2, 20520 Turku, Finland.
authors.forename: Merja
authors.initials: M
authors.lastname: Ruutu
authors.forename: Bo
authors.initials: B
authors.lastname: Johansson
authors.forename: Reidar
authors.initials: R
authors.lastname: Grenman
authors.forename: Stina
authors.initials: S
authors.lastname: Syrjänen
mesh_terms: D000328:Adult; D002461:Cell Line, Transformed; D045744:Cell Line, Tumor; D016000:Cluster Analysis; D005260:Female; D020869:Gene Expression Profiling; D015972:Gene Expression Regulation, Neoplastic / Q000235:genetics; D006801:Humans; D008010:Lichen Planus / Q000150:complications; D008297:Male; D008875:Middle Aged; D009062:Mouth Neoplasms / Q000209:etiology / Q000235:genetics* / Q000473:pathology; D020411:Oligonucleotide Array Sequence Analysis / Q000379:methods; D030361:Papillomavirus Infections / Q000150:complications