title: Establishment and characterization of a new human leukemia cell line derived from M4E0.
abstract: A new human leukemia cell line, designated as ME-1, was established from the peripheral blood leukemia cells of a patient with acute myelomonocytic leukemia with eosinophilia (M4E0). This cell line has the characteristic chromosome abnormality of M4E0, inv(16) (p13q22). When cultured in RPMI 1640 medium containing 10% fetal calf serum, ME-1 cells were monoblastoid, but with the addition of cytokines such as interleukin-3 (IL-3), granulocyte-macrophage colony-stimulating factor (GM-CSF), IL-4, or medium conditioned by phytohemagglutinin-stimulated human peripheral leukocytes (PHA-LCM), the cells exhibited differentiation to macrophage-like cells. PHA-LCM also promoted eosinophilic-lineage differentiation of this cell line, although IL-5 did not do so. To elucidate the mechanism of proliferation and differentiation of ME-1 cells, we studied the effect of a potent inhibitor of protein kinase C, 1-(5-isoquinolinyl-sulfonyl)-2-methylpiperazine (H-7), on colony formation of ME-1 cells. H-7 inhibited colony formation of ME-1 cells by IL-3 or GM-CSF dose dependently, but had little inhibitory effect on colony formation by IL-4. These results indicate that the proliferation and differentiation of ME-1 cells by IL-3 or GM-CSF were related to the activation of protein kinase C, while those by IL-4 involved other regulatory systems. ME-1 cells should be useful for studying the pathogenesis of M4E0 and the mechanisms of proliferation and differentiation of leukemic and normal progenitors by cytokines.
authors.affiliation: First Department of Internal Medicine, School of Medicine, Ehime University, Japan.
authors.forename: K
authors.initials: K
authors.lastname: Yanagisawa
authors.forename: T
authors.initials: T
authors.lastname: Horiuchi
authors.forename: S
authors.initials: S
authors.lastname: Fujita
mesh_terms: D019307:1-(5-Isoquinolinesulfonyl)-2-Methylpiperazine; D000328:Adult; D000954:Antigens, Surface / Q000032:analysis; D002448:Cell Adhesion / Q000187:drug effects; D002454:Cell Differentiation / Q000187:drug effects; D002460:Cell Line; D002871:Chromosome Banding; D046508:Culture Techniques / Q000379:methods; D016207:Cytokines / Q000494:pharmacology; D004802:Eosinophilia / Q000097:blood* / Q000235:genetics / Q000473:pathology; D006801:Humans; D007546:Isoquinolines / Q000494:pharmacology; D007621:Karyotyping; D007700:Kinetics; D015479:Leukemia, Myelomonocytic, Acute / Q000097:blood* / Q000235:genetics / Q000473:pathology; D008264:Macrophages / Q000648:ultrastructure; D008297:Male; D008854:Microscopy, Electron; D009113:Muramidase / Q000097:blood; D010587:Phagocytosis; D010879:Piperazines / Q000494:pharmacology; D011493:Protein Kinase C / Q000037:antagonists & inhibitors
chemical_list: D000954:Antigens, Surface; D016207:Cytokines; D007546:Isoquinolines; D010879:Piperazines; D019307:1-(5-Isoquinolinesulfonyl)-2-Methylpiperazine; D011493:Protein Kinase C; D009113:Muramidase