title: Methylation profile of genes CDKN2A (p14 and p16), DAPK1, CDH1, and ADAM23 in head and neck cancer.
abstract: Hypermethylation in the promoter region has been associated with a loss of gene function that may give a selective advantage to neoplastic cells. In this study, the methylation pattern of genes CDKN2A (alias p14, p14(ARF), p16, p16(INK4a)), DAPK1, CDH1, and ADAM23 was analyzed in 43 samples of head and neck tumors using methylation-specific polymerase chain reaction. In the oropharynx, there was a statistically significant association between hypermethylation of the DAPK1 gene and the occurrence of lymph node metastases, and in the larynx there was statistically significant evidence of an association between hypermethylation of the ADAM23 gene and advanced stages of the tumors. Thus, a correlation was observed between hypermethylation of the promoter region of genes DAPK1 and ADAM23 and the progression of head and neck cancer.
authors.affiliation: Department of Biology, UNESP-IBILCE, Rua Cristovão Colombo, 2265, Jardim Nazareth, CEP: 15054-000, São José do Rio Preto, SP, Brazil.
authors.forename: Marilia F
authors.initials: MF
authors.lastname: Calmon
authors.forename: Jucimara
authors.initials: J
authors.lastname: Colombo
authors.forename: Fabrício
authors.initials: F
authors.lastname: Carvalho
authors.forename: Fátima P
authors.initials: FP
authors.lastname: Souza
authors.forename: José F G
authors.initials: JF
authors.lastname: Filho
authors.forename: Erica E
authors.initials: EE
authors.lastname: Fukuyama
authors.forename: Anamaria A
authors.initials: AA
authors.lastname: Camargo
authors.forename: Otávia L S
authors.initials: OL
authors.lastname: Caballero
authors.forename: Eloíza H
authors.initials: EH
authors.lastname: Tajara
authors.forename: José A
authors.initials: JA
authors.lastname: Cordeiro
authors.forename: Paula
authors.initials: P
authors.lastname: Rahal
mesh_terms: D051722:ADAM Proteins / Q000235:genetics*; D000368:Aged; D000369:Aged, 80 and over; D015703:Antigens, CD; D051017:Apoptosis Regulatory Proteins / Q000235:genetics*; D015820:Cadherins / Q000235:genetics*; D017871:Calcium-Calmodulin-Dependent Protein Kinases / Q000235:genetics*; D045744:Cell Line, Tumor; D019941:Cyclin-Dependent Kinase Inhibitor p16 / Q000235:genetics*; D019175:DNA Methylation; D004273:DNA, Neoplasm / Q000235:genetics / Q000378:metabolism; D064550:Death-Associated Protein Kinases; D005260:Female; D045325:HCT116 Cells; D006258:Head and Neck Neoplasms / Q000235:genetics* / Q000473:pathology; D006801:Humans; D008297:Male; D008875:Middle Aged; D016133:Polymerase Chain Reaction / Q000379:methods; D011401:Promoter Regions, Genetic
chemical_list: D015703:Antigens, CD; D051017:Apoptosis Regulatory Proteins; C513384:CDH1 protein, human; D015820:Cadherins; D019941:Cyclin-Dependent Kinase Inhibitor p16; D004273:DNA, Neoplasm; C579096:DAPK1 protein, human; D064550:Death-Associated Protein Kinases; D017871:Calcium-Calmodulin-Dependent Protein Kinases; D051722:ADAM Proteins; C114633:ADAM23 protein, human