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Title: Measurement of human granulocyte-macrophage colony-stimulating factor (GM-CSF) by enzyme-linked immunosorbent assay. Author: Omori F, Okamura S, Hayashi S, Yamaga S, Hirota Y, Niho Y. Journal: Biotherapy; 1989; 1(3):161-7. PubMed ID: 2484432. Abstract: An IgG monoclonal antibody against recombinant human granulocyte-macrophage colony-stimulating factor (GM-CSF), designated HGM1, was produced by fusion of immune mouse splenocytes with HAT-sensitive murine myeloma cells. A sandwich enzyme-linked immunosorbent assay (ELISA) for measurement of human GM-CSF was developed using this HGM1 and a polyclonal antibody against GM-CSF raised in a rabbit. GM-CSF in culture supernatants of phytohemagglutinin (PHA)- or concanavalin A (Con A)-stimulated peripheral blood mononuclear cells (PBMC) were measured by this ELISA system and the conventional CFU-GM colony formation method. The data indicated that the ELISA was highly efficient and sensitive for the detection of as little as 50 pg/ml recombinant GM-CSF. The CFU-GM colony assay may be influenced by other cytokines which can enhance or suppress colony formation, and ELISA for GM-CSF is more useful for kinetic studies of precise levels of production from PBMC.[Abstract] [Full Text] [Related] [New Search]