title: p53 and PTEN/MMAC1 mutational analysis of the small-intestinal cancer.
abstract: A 66-year-old female, suffering from small-intestinal cancer underwent resection of the small intestine. Genome DNAs were extracted from the patient's blood and small-intestinal cancer and were subjected to a polymerase chain reaction-single strand conformation polymorphism and nucleotide sequence analysis for exons of the p53 and PTEN/MMAC1 genes to search for any mutations. The sequence analysis revealed a point mutation of the p53 codon 93 in the cancer DNA; however, no mutation of the PTEN/MMAC1 gene was observed in either the blood or cancer DNA. The p53 mutation, therefore, seems to be related to tumour progression of small-intestinal cancer; however, no relationship was found between the PTEN/MMAC1 gene and the small-intestinal cancer.
authors.affiliation: Department of Medicine and Bioregulatory Science, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan.
authors.forename: K
authors.initials: K
authors.lastname: Ito
authors.forename: M
authors.initials: M
authors.lastname: Kubokawa
authors.forename: N
authors.initials: N
authors.lastname: Harada
authors.forename: R
authors.initials: R
authors.lastname: Mibu
authors.forename: H
authors.initials: H
authors.lastname: Nawata
mesh_terms: D000368:Aged; D004252:DNA Mutational Analysis; D005260:Female; D016158:Genes, p53 / Q000235:genetics*; D006801:Humans; D007082:Ileum; D007414:Intestinal Neoplasms / Q000235:genetics*; D051059:PTEN Phosphohydrolase; D010744:Phosphoric Monoester Hydrolases / Q000235:genetics*; D017354:Point Mutation; D016133:Polymerase Chain Reaction; D018807:Polymorphism, Single-Stranded Conformational; D025521:Tumor Suppressor Proteins / Q000235:genetics*
chemical_list: D025521:Tumor Suppressor Proteins; D010744:Phosphoric Monoester Hydrolases; D051059:PTEN Phosphohydrolase; C494929:PTEN protein, human