title: Mutational analyses of candidate genes in human squamous cell carcinomas.
abstract: OBJECTIVE
  Squamous cell carcinomas are common malignancies and a major cause of mortality. The molecular mechanisms involved in tumorigenesis remain largely unknown, but sequence alterations have been identified in coding regions of several genes. Primary squamous cell carcinomas of various tissues (skin, head and neck, esophagus, lung, penis, uterus, and vagina) from 52 patients were analyzed for the presence of mutations within several candidate genes presumably involved in tumorigenesis: Gsalpha, Gi2alpha, GTPase activating protein (GAP), and patched (PTCH) genes.
  
  
  METHODS
  Mutational analysis scheme included polymerase chain reaction (PCR), denaturing gradient gel electrophoresis (DGGE), single stranded conformational polymorphism (SSCP), and selected sequence analysis.
  
  
  CONCLUSIONS
  No tumor had any evidence of mutations in any of these analyzed genes. Mutations within these genes do not occur frequently in an unselected population of patients with squamous cell carcinomas.
authors: Department of Surgery, Universidade Federal de Minas Gerais, Brazil. LDEMARCO@ICB.UFMG.BR
authors: A
authors: A
authors: Petroianu
authors: W L
authors: WL
authors: Boson
authors: A E
authors: AE
authors: Bale
authors: E
authors: E
authors: Friedman
authors: L
authors: L
authors: De Marco
mesh_terms: D002294:Carcinoma, Squamous Cell / Q000235:genetics*; D004252:DNA Mutational Analysis; D004273:DNA, Neoplasm / Q000235:genetics; D005091:Exons / Q000235:genetics; D005260:Female; D019204:GTP-Binding Proteins / Q000235:genetics; D006801:Humans; D008297:Male; D017354:Point Mutation / Q000235:genetics*; D016133:Polymerase Chain Reaction / Q000379:methods; D011110:Polymorphism, Genetic / Q000235:genetics
chemical_list: D004273:DNA, Neoplasm; D019204:GTP-Binding Proteins