title: [PCR-SSCP and sequencing analysis on mutations of anti-oncogene p53 in asbestos-related lung cancer].
abstract: To explore the carcinogenic effect of asbestos at molecular level, we directly analyzed the mutations of exon 5, 7 and 8 of anti-oncogene p53 in paraffin-embedded human lung tissue affected by asbestos for the first time. Mutations of p53 gene located in exon 5, 7 and 8 were detected in 7 of 10 cases by polymerase chain reaction-single strand conformation polymorphism (PCR-SSCP) analysis. The mutation rate found in this study is 70%. Two cases were analyzed by PCR product direct sequencing and C-->A and T-->A transformations were detected. Mutation of p53 gene may be one of the characteristics of asbestos-related lung cancer.
mesh_terms: D001194:Asbestos; D002273:Carcinogens; D016158:Genes, p53 / Q000235:genetics*; D006801:Humans; D008175:Lung Neoplasms / Q000209:etiology / Q000235:genetics*; D016612:Paraffin Embedding; D017354:Point Mutation; D016133:Polymerase Chain Reaction; D018807:Polymorphism, Single-Stranded Conformational; D017422:Sequence Analysis, DNA