title: Effects of foscarnet on the cell kinetics of Madin-Darby canine kidney cells.
abstract: The antiherpes compound, foscarnet (trisodium phosphonoformate), showed concentration-dependent effects on the cell kinetics of Madin-Darby canine kidney cells. At 1 mM, only minor effects could be seen on cell proliferation and cell cycle distribution, as measured by flow cytometry DNA analysis. Treatment with 5 mM foscarnet resulted in an accumulation of cells in the S-phase although no complete cell cycle block was evident. At 10 mM foscarnet, cells accumulated earlier in the S phase, probably at the G1/S border. However, at both 5 and 10 mM foscarnet the block was not established until after 15 h incubation. Upon removing 10 mM foscarnet after 24 h incubation, G1 cells rapidly entered the S phase, whereas the progression through S and G2 + M was delayed considerably. The DNA synthesizing S phase seems, therefore, to be the main cell cycle phase affected by foscarnet.
mesh_terms: D000818:Animals; D002453:Cell Cycle / Q000187:drug effects; D002455:Cell Division / Q000187:drug effects; D002460:Cell Line; D004247:DNA / Q000096:biosynthesis; D004285:Dogs; D017245:Foscarnet; D007399:Interphase / Q000187:drug effects; D007668:Kidney / Q000166:cytology / Q000187:drug effects* / Q000378:metabolism; D007700:Kinetics; D009943:Organophosphorus Compounds / Q000494:pharmacology*; D010746:Phosphonoacetic Acid / Q000031:analogs & derivatives / Q000494:pharmacology*
chemical_list: D009943:Organophosphorus Compounds; D017245:Foscarnet; D004247:DNA; D010746:Phosphonoacetic Acid