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Enhancing effect of human monocytic colony-stimulating factor on monocyte tumoricidal activity. 1989

S Suzu, and H Yokota, and M Yamada, and N Yanai, and M Saito, and T Kawashima, and M Saito, and F Takaku, and K Motoyoshi
Biochemical Research Laboratory, Morinaga Milk Industry Co., Ltd., Tokyo, Japan.

Human monocytic colony-stimulating factor (hM-CSF) enhances several effector functions of human peripheral blood monocytes. In this study, we investigated the effect of the Mr 85,000 form of hM-CSF on the tumoricidal activity of human monocytes against several leukemic cell lines using a 12-h chromium release assay. Human peripheral blood monocytes preincubated with hM-CSF for 48 h showed more effective killing activity towards K562, U937, Daudi, and HL60 cells as compared with the cells preincubated with medium alone. Maximal enhancement of the tumoricidal activity was achieved by hM-CSF at concentrations of 50-100 ng/ml. A trace amount of lipopolysaccharide contained in the hM-CSF did not seem to contribute to the enhancing effect, as the addition of a lipopolysaccharide-neutralizing agent, polymyxin B, to the preincubation mixture did not reduce this effect. Anti-tumor necrosis factor antiserum partially blocked the tumoricidal activity mediated by hM-CSF, indicating that tumor necrosis factor may participate in the hM-CSF-mediated increase of monocyte tumor cell-killing activity. These results suggest that in addition to other monocyte-activating factors, hM-CSF augments monocyte tumoricidal activity against a wide spectrum of tumor targets.

UI MeSH Term Description Entries
D007700 Kinetics The rate dynamics in chemical or physical systems.
D009000 Monocytes Large, phagocytic mononuclear leukocytes produced in the vertebrate BONE MARROW and released into the BLOOD; contain a large, oval or somewhat indented nucleus surrounded by voluminous cytoplasm and numerous organelles. Monocyte
D011112 Polymyxin B A mixture of polymyxins B1 and B2, obtained from BACILLUS POLYMYXA strains. They are basic polypeptides of about eight amino acids and have cationic detergent action on cell membranes. Polymyxin B is used for treatment of infections with gram-negative bacteria, but may be neurotoxic and nephrotoxic. Aerosporin,Polymyxin B Sulfate
D002460 Cell Line Established cell cultures that have the potential to propagate indefinitely. Cell Lines,Line, Cell,Lines, Cell
D002470 Cell Survival The span of viability of a cell characterized by the capacity to perform certain functions such as metabolism, growth, reproduction, some form of responsiveness, and adaptability. Cell Viability,Cell Viabilities,Survival, Cell,Viabilities, Cell,Viability, Cell
D002478 Cells, Cultured Cells propagated in vitro in special media conducive to their growth. Cultured cells are used to study developmental, morphologic, metabolic, physiologic, and genetic processes, among others. Cultured Cells,Cell, Cultured,Cultured Cell
D003115 Colony-Stimulating Factors Glycoproteins found in a subfraction of normal mammalian plasma and urine. They stimulate the proliferation of bone marrow cells in agar cultures and the formation of colonies of granulocytes and/or macrophages. The factors include INTERLEUKIN-3; (IL-3); GRANULOCYTE COLONY-STIMULATING FACTOR; (G-CSF); MACROPHAGE COLONY-STIMULATING FACTOR; (M-CSF); and GRANULOCYTE-MACROPHAGE COLONY-STIMULATING FACTOR; (GM-CSF). MGI-1,Macrophage-Granulocyte Inducer,Colony Stimulating Factor,Colony-Stimulating Factor,MGI-1 Protein,Myeloid Cell-Growth Inducer,Protein Inducer MGI,Cell-Growth Inducer, Myeloid,Colony Stimulating Factors,Inducer, Macrophage-Granulocyte,Inducer, Myeloid Cell-Growth,MGI 1 Protein,MGI, Protein Inducer,Macrophage Granulocyte Inducer,Myeloid Cell Growth Inducer
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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