title: Establishment of the novel B acute lymphoblastic leukemia (FAB L3) cell line KHM-10B with a 13q34 abnormality and constitutive expression of c-myc and max during cell cycle.
abstract: We established and characterized a new acute lymphoblastic leukemia (ALL-L3 according to FAB classification, or Burkitt's type) cell line, KHM-10B. The morphology of the patient's lymphoblasts and KHM-10B cells corresponded to that of ALL-L3 cells. The cells were positive for HLA-DR, CD19 and surface immunoglobulin (mu, lambda). Southern blot analysis revealed that the fresh lymphoblasts and KHM-10B shared the same immunoglobulin gene rearrangement. Conventional cytogenetic analysis of fresh lymphoblasts from the patient and KHM-10B cells revealed the 13q34 abnormality, the second most common additional abnormality in Burkitt's lymphoma, but no detectable 8q24 involvement. Rearrangement of the c-myc oncogene was not detected by Southern blot analysis. However, a fluorescence in situ hybridization (FISH) assay identified a t(8;22)(q24;q11). The KHM-10B cells were arrested at S phase with hydroxyurea and thymidine, and the synchronized cells progressed through the cell cycle in drug-free medium. The expression of c-myc and max was observed throughout the cell cycle, as was found in the Burkitt's lymphoma cell in Raji. Our findings indicate that FISH analysis is of diagnostic value in detecting obscure chromosomal translocations and that max, as well as c-myc, is expressed constitutively in ALL-L3 and Burkitt's lymphoma cell lines.
authors.affiliation: Second Department of Internal Medicine, Kumamoto University School of Medicine, Japan.
authors.forename: T
authors.initials: T
authors.lastname: Sonoki
authors.forename: H
authors.initials: H
authors.lastname: Matsuzaki
authors.forename: K
authors.initials: K
authors.lastname: Miyamoto
authors.forename: M
authors.initials: M
authors.lastname: Taniwaki
authors.forename: T
authors.initials: T
authors.lastname: Yoshino
authors.forename: H
authors.initials: H
authors.lastname: Hata
authors.forename: M
authors.initials: M
authors.lastname: Yoshida
authors.forename: F
authors.initials: F
authors.lastname: Matsuno
authors.forename: A
authors.initials: A
authors.lastname: Nagasaki
authors.forename: N
authors.initials: N
authors.lastname: Kuribayashi
mesh_terms: D000328:Adult; D001483:Base Sequence; D051778:Basic Helix-Loop-Helix Leucine Zipper Transcription Factors; D050976:Basic-Leucine Zipper Transcription Factors; D002051:Burkitt Lymphoma / Q000235:genetics / Q000378:metabolism / Q000473:pathology*; D002453:Cell Cycle; D002869:Chromosome Aberrations; D002882:Chromosomes, Human, Pair 13; D004268:DNA-Binding Proteins / Q000096:biosynthesis*; D006801:Humans; D007621:Karyotyping; D008297:Male; D008969:Molecular Sequence Data; D016271:Proto-Oncogene Proteins c-myc / Q000096:biosynthesis*; D014157:Transcription Factors; D014178:Translocation, Genetic; D014407:Tumor Cells, Cultured
chemical_list: D051778:Basic Helix-Loop-Helix Leucine Zipper Transcription Factors; D050976:Basic-Leucine Zipper Transcription Factors; D004268:DNA-Binding Proteins; C499330:MAX protein, human; C067850:Myc associated factor X; D016271:Proto-Oncogene Proteins c-myc; D014157:Transcription Factors