Abstract
A monosomy 7 leukemia cell line, designated MONO-7, was established from the peripheral blood of a patient with monosomy 7 acute myelocytic leukemia (French-American-British classification M0). The cells were cultured continuously for more than 24 months in RPMI-1640 medium supplemented with 10% heat-inactivated fetal calf serum. The cell line exhibits an unclassified appearance. Cytochemically, α-naphthol-acetate esterase and myeloperoxidase are negative. Immunophenotypi-cally, the cell line expresses CD33, CD13, CD56, CD34, CD38, HLA-DR, and CD45, but lacks T and B cell-associated antigens. Karyotypic analysis of the cell line showed only 45,XY,-7. Analysis of the N-ras gene mutation demonstrated identical mutations in fresh leukemic cells and the MONO-7 cell line. Clonal rearrangements of the immunoglobulin heavy-chain gene, T-cell receptor β-chain gene, or T-cell receptor γ-chain gene were not found in DNA extracted from MONO-7 cells. The growth of MONO-7 cells in vitro was stimulated by recombinant human granulocyte-macrophage colony-stimulating factor or interleukin 3. To our knowledge, this is the first report of the establishment of a cell line with the karyotype 45,XY,-7 with-out any other abnormality and with a ras gene mutation.
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Fujisaki, H., Takai, K., Sawada, A. et al. Establishment of a Monosomy 7 Leukemia Cell Line, MONO-7, With aras Gene Mutation. Int J Hematol 75, 72–77 (2002). https://doi.org/10.1007/BF02981983
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DOI: https://doi.org/10.1007/BF02981983