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Differences in the frequency of normal and clonal precursors of colony-forming cells in chronic myelogenous leukemia and acute myelogenous leukemia. 1992

I D Bernstein, and J W Singer, and F O Smith, and R G Andrews, and D A Flowers, and J Petersens, and L Steinmann, and V Najfeld, and D Savage, and S Fruchtman
Fred Hutchinson Cancer Research Center, Veterans Administration Medical Center, Seattle, WA 98104.

Acute myelogenous leukemia (AML) is a clonal disease that is heterogeneous with respect to the pattern of differentiative expression of the leukemic progenitors. In some patients, the involved stem cells manifest pluripotent differentiative expression, whereas in others, the involved progenitors manifest differentiative expression mainly restricted to the granulocytic pathway. This is in contrast to chronic myelogenous leukemia (CML) which is a clonal disease known to arise in a pluripotent stem cell. Therefore, we tested whether these leukemias could be distinguished with respect to their involvement of immature precursors by studying colony-forming cells (CFC) and their precursors from four glucose-6-phosphate dehydrogenase (G6PD) heterozygous patients with AML and five patients with CML. CFC were separated from their precursors by FACS for expression of CD33 and CD34 followed by growth in a long-term culture (LTC) system. The vast majority of CFC express both the CD33 and CD34 antigens, but their less mature precursors, detected by their ability to give rise to CFC in LTC, express only CD34. In three of the four patients with AML, the CD33-CD34+ cells produced CFC in LTC that appeared to be predominantly or completely normal (ie, nonclonal) in origin. In the fourth patient, a significant enrichment of nonclonal progenitors was obtained in the CD33-CD34+ population, but these cells may also have included significant numbers of clonal cells. In contrast, in four of five patients with CML, cultures of both the CD33-CD34+ and CD33+CD34+ populations produced CFC in LTC that were almost entirely clonal in origin, whereas in the fifth patient a substantial number originated from nonclonal stem cells. These data indicate that granulocyte/monocyte progenitors are predominantly clonally derived in CML and AML. In CML, their precursors are also predominantly clonal, but in some cases of AML they are not. These findings may have implications for understanding the success or failure of current therapies of AML and CML.

UI MeSH Term Description Entries
D002452 Cell Count The number of CELLS of a specific kind, usually measured per unit volume or area of sample. Cell Density,Cell Number,Cell Counts,Cell Densities,Cell Numbers,Count, Cell,Counts, Cell,Densities, Cell,Density, Cell,Number, Cell,Numbers, Cell
D002454 Cell Differentiation Progressive restriction of the developmental potential and increasing specialization of function that leads to the formation of specialized cells, tissues, and organs. Differentiation, Cell,Cell Differentiations,Differentiations, Cell
D002469 Cell Separation Techniques for separating distinct populations of cells. Cell Isolation,Cell Segregation,Isolation, Cell,Cell Isolations,Cell Segregations,Cell Separations,Isolations, Cell,Segregation, Cell,Segregations, Cell,Separation, Cell,Separations, Cell
D002999 Clone Cells A group of genetically identical cells all descended from a single common ancestral cell by mitosis in eukaryotes or by binary fission in prokaryotes. Clone cells also include populations of recombinant DNA molecules all carrying the same inserted sequence. (From King & Stansfield, Dictionary of Genetics, 4th ed) Clones,Cell, Clone,Cells, Clone,Clone,Clone Cell
D005434 Flow Cytometry Technique using an instrument system for making, processing, and displaying one or more measurements on individual cells obtained from a cell suspension. Cells are usually stained with one or more fluorescent dyes specific to cell components of interest, e.g., DNA, and fluorescence of each cell is measured as it rapidly transverses the excitation beam (laser or mercury arc lamp). Fluorescence provides a quantitative measure of various biochemical and biophysical properties of the cell, as well as a basis for cell sorting. Other measurable optical parameters include light absorption and light scattering, the latter being applicable to the measurement of cell size, shape, density, granularity, and stain uptake. Cytofluorometry, Flow,Cytometry, Flow,Flow Microfluorimetry,Fluorescence-Activated Cell Sorting,Microfluorometry, Flow,Cell Sorting, Fluorescence-Activated,Cell Sortings, Fluorescence-Activated,Cytofluorometries, Flow,Cytometries, Flow,Flow Cytofluorometries,Flow Cytofluorometry,Flow Cytometries,Flow Microfluorometries,Flow Microfluorometry,Fluorescence Activated Cell Sorting,Fluorescence-Activated Cell Sortings,Microfluorimetry, Flow,Microfluorometries, Flow,Sorting, Fluorescence-Activated Cell,Sortings, Fluorescence-Activated Cell
D005954 Glucosephosphate Dehydrogenase Glucose-6-Phosphate Dehydrogenase,Dehydrogenase, Glucose-6-Phosphate,Dehydrogenase, Glucosephosphate,Glucose 6 Phosphate Dehydrogenase
D006412 Hematopoietic Stem Cells Progenitor cells from which all blood cells derived. They are found primarily in the bone marrow and also in small numbers in the peripheral blood. Colony-Forming Units, Hematopoietic,Progenitor Cells, Hematopoietic,Stem Cells, Hematopoietic,Hematopoietic Progenitor Cells,Cell, Hematopoietic Progenitor,Cell, Hematopoietic Stem,Cells, Hematopoietic Progenitor,Cells, Hematopoietic Stem,Colony Forming Units, Hematopoietic,Colony-Forming Unit, Hematopoietic,Hematopoietic Colony-Forming Unit,Hematopoietic Colony-Forming Units,Hematopoietic Progenitor Cell,Hematopoietic Stem Cell,Progenitor Cell, Hematopoietic,Stem Cell, Hematopoietic,Unit, Hematopoietic Colony-Forming,Units, Hematopoietic Colony-Forming
D006579 Heterozygote An individual having different alleles at one or more loci regarding a specific character. Carriers, Genetic,Genetic Carriers,Carrier, Genetic,Genetic Carrier,Heterozygotes
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D014407 Tumor Cells, Cultured Cells grown in vitro from neoplastic tissue. If they can be established as a TUMOR CELL LINE, they can be propagated in cell culture indefinitely. Cultured Tumor Cells,Neoplastic Cells, Cultured,Cultured Neoplastic Cells,Cell, Cultured Neoplastic,Cell, Cultured Tumor,Cells, Cultured Neoplastic,Cells, Cultured Tumor,Cultured Neoplastic Cell,Cultured Tumor Cell,Neoplastic Cell, Cultured,Tumor Cell, Cultured

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