title: A factor inducing differentiation of the human monocytic cell line U-937 produced by 12-O-tetradecanoylphorbol 13-acetate-treated U-937.
abstract: A new factor capable of inducing differentiation of human leukemic cell line U-937 into macrophages was found and partially purified from the conditioned medium of U-937 previously treated with 12-O-tetradecanoylphorbol 13-acetate. The purification procedure included ultrafiltration, DEAE-Sephacel and butyl-Toyopearl column chromatography. The purified factor gave a major band of protein with a molecular weight of 67,000 daltons which coincided with the biological activity of differentiation-inducing factor, and it was not adsorbed on a concanavalin A column. These results suggest that this factor is distinct from other differentiation-inducing factors.
mesh_terms: D002454:Cell Differentiation / Q000187:drug effects*; D002460:Cell Line; D006801:Humans; D007951:Leukemia, Myeloid / Q000378:metabolism / Q000473:pathology*; D008264:Macrophages / Q000473:pathology; D013755:Tetradecanoylphorbol Acetate / Q000494:pharmacology*
chemical_list: D013755:Tetradecanoylphorbol Acetate