title: Mutations of p53 gene and their relation to disease progression in B-cell lymphoma.
abstract: The alteration of p53 tumor suppressor gene was studied in 48 patients with B-cell lymphoma. A sequential combined technique of polymerase chain reaction-mediated single-strand conformational polymorphism (PCR-SSCP) or reverse transcription (RT)-PCR-SSCP and direct sequencing were used as a simple and sensitive approach to analyze nucleotide changes. By these methods, we identified 8 missense point mutations and 2 codon deletions in 9 of the 48 patients. These mutations were located in or close to the evolutionally highly conserved regions of the p53 gene. Eight of nine patients having p53 gene alterations were in advanced clinical stage (IV). It is the first report of p53 gene mutations in follicular and diffuse lymphoma. These observations suggest that the p53 gene alteration may play an important role in lymphomagenesis and/or disease progression in some types of B-cell lymphoma.
authors.affiliation: First Department of Internal Medicine, Nagoya University School of Medicine, Japan.
authors.forename: A
authors.initials: A
authors.lastname: Ichikawa
authors.forename: T
authors.initials: T
authors.lastname: Hotta
authors.forename: N
authors.initials: N
authors.lastname: Takagi
authors.forename: K
authors.initials: K
authors.lastname: Tsushita
authors.forename: T
authors.initials: T
authors.lastname: Kinoshita
authors.forename: H
authors.initials: H
authors.lastname: Nagai
authors.forename: Y
authors.initials: Y
authors.lastname: Murakami
authors.forename: K
authors.initials: K
authors.lastname: Hayashi
authors.forename: H
authors.initials: H
authors.lastname: Saito
mesh_terms: D001483:Base Sequence; D004273:DNA, Neoplasm / Q000235:genetics / Q000302:isolation & purification; D005091:Exons; D005260:Female; D016158:Genes, p53; D006801:Humans; D008198:Lymph Nodes / Q000473:pathology / Q000503:physiopathology; D016393:Lymphoma, B-Cell / Q000145:classification / Q000235:genetics* / Q000473:pathology / Q000503:physiopathology; D008297:Male; D008875:Middle Aged; D008969:Molecular Sequence Data; D009154:Mutation; D009690:Nucleic Acid Conformation; D009838:Oligodeoxyribonucleotides; D016133:Polymerase Chain Reaction / Q000379:methods; D011110:Polymorphism, Genetic; D011379:Prognosis; D012334:RNA, Neoplasm / Q000235:genetics / Q000302:isolation & purification; D012194:RNA-Directed DNA Polymerase
chemical_list: D004273:DNA, Neoplasm; D009838:Oligodeoxyribonucleotides; D012334:RNA, Neoplasm; D012194:RNA-Directed DNA Polymerase