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Detection of translocation 8;21 on interphase cells from acute myelocytic leukemia by fluorescence in situ hybridization and its clinical application. 1999

K Tanaka, and M Arif, and H Asou, and K Shimizu, and M Ohki, and T Kyo, and H Dohy, and N Kamada
Department of Cancer Cytogenetics, Hiroshima University, Japan.

To detect a translocation (8;21)(q22;q22) in interphase cells by fluorescence in situ hybridization (FISH), we investigated three probe combinations: single-color hybridization with two cosmid probes (cY8 and cY3), single-color hybridization with four cosmid probes (cY8, cY3, cY107, and cYR4), and dual-color hybridization with two cosmid probes (cY107 and cYR4) from the AML1 gene flanking or overlapping the breakpoint region. Over 95% of nuclei gave sufficient signals in all three probe combinations, and the detection rates were not statistically different among them. Among 18 patients examined at diagnosis, 12 with t(8;21) were also monitored for the number of residual leukemic cells after chemotherapy or bone marrow transplantation (BMT). There were some discrepancies between morphology and genetic (especially FISH) results at partial, or even complete remission. As leukemic cells with t(8;21) can maturate, morphological assessment alone is insufficient to evaluate the residual leukemic cells. Interphase FISH provided more precise information about the clinical status of patients with an 8;21 translocation after treatment.

UI MeSH Term Description Entries
D007399 Interphase The interval between two successive CELL DIVISIONS during which the CHROMOSOMES are not individually distinguishable. It is composed of the G phases (G1 PHASE; G0 PHASE; G2 PHASE) and S PHASE (when DNA replication occurs). Interphases
D008957 Models, Genetic Theoretical representations that simulate the behavior or activity of genetic processes or phenomena. They include the use of mathematical equations, computers, and other electronic equipment. Genetic Models,Genetic Model,Model, Genetic
D011518 Proto-Oncogene Proteins Products of proto-oncogenes. Normally they do not have oncogenic or transforming properties, but are involved in the regulation or differentiation of cell growth. They often have protein kinase activity. Cellular Proto-Oncogene Proteins,c-onc Proteins,Proto Oncogene Proteins, Cellular,Proto-Oncogene Products, Cellular,Cellular Proto Oncogene Proteins,Cellular Proto-Oncogene Products,Proto Oncogene Products, Cellular,Proto Oncogene Proteins,Proto-Oncogene Proteins, Cellular,c onc Proteins
D002891 Chromosomes, Human, Pair 21 A specific pair of GROUP G CHROMOSOMES of the human chromosome classification. Chromosome 21
D002898 Chromosomes, Human, Pair 8 A specific pair of GROUP C CHROMOSOMES of the human chromosome classification. Chromosome 8
D004268 DNA-Binding Proteins Proteins which bind to DNA. The family includes proteins which bind to both double- and single-stranded DNA and also includes specific DNA binding proteins in serum which can be used as markers for malignant diseases. DNA Helix Destabilizing Proteins,DNA-Binding Protein,Single-Stranded DNA Binding Proteins,DNA Binding Protein,DNA Single-Stranded Binding Protein,SS DNA BP,Single-Stranded DNA-Binding Protein,Binding Protein, DNA,DNA Binding Proteins,DNA Single Stranded Binding Protein,DNA-Binding Protein, Single-Stranded,Protein, DNA-Binding,Single Stranded DNA Binding Protein,Single Stranded DNA Binding Proteins
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000328 Adult A person having attained full growth or maturity. Adults are of 19 through 44 years of age. For a person between 19 and 24 years of age, YOUNG ADULT is available. Adults
D013997 Time Factors Elements of limited time intervals, contributing to particular results or situations. Time Series,Factor, Time,Time Factor
D014157 Transcription Factors Endogenous substances, usually proteins, which are effective in the initiation, stimulation, or termination of the genetic transcription process. Transcription Factor,Factor, Transcription,Factors, Transcription

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