title: Phenotypic changes of human neuroblastoma cells in culture induced by 12-O-tetradecanoyl-phorbol-13-acetate.
abstract: SK-N-SH and SH-SY5Y human neuroblastoma cells treated by 12-)-tetradecanoyl-phorbol-13-acetate(TPA) express morphological and biochemical changes, which indicate that differentiation towards more mature cells has occurred. The most prominent morphological changes were the development in 40-60% of the cells of cell-surface projections longer than 50 micrometers and cytoplasmic neurosecretory granules demonstrated by electron microscopy. At the biochemical level, TPA induced a two-fold increase in the relative activity of neuron-specific enolase and 30- to 40-fold increase in noradrenaline and adrenaline concentrations. A decrease in proliferation rate of TPA-treated cells was observed. The biological effects of TPA were slightly potentiated by nerve growth factor.
mesh_terms: D002455:Cell Division / Q000187:drug effects; D002460:Cell Line; D002478:Cells, Cultured; D003594:Cytoplasmic Granules / Q000187:drug effects; D004837:Epinephrine / Q000378:metabolism; D006801:Humans; D066298:In Vitro Techniques; D008854:Microscopy, Electron; D009447:Neuroblastoma / Q000473:pathology*; D009638:Norepinephrine / Q000378:metabolism; D010641:Phenotype; D010704:Phorbols / Q000494:pharmacology*; D010751:Phosphopyruvate Hydratase / Q000378:metabolism; D013755:Tetradecanoylphorbol Acetate / Q000494:pharmacology*
chemical_list: D010704:Phorbols; D010751:Phosphopyruvate Hydratase; D013755:Tetradecanoylphorbol Acetate; D009638:Norepinephrine; D004837:Epinephrine