title: Growth inhibition of cells in cultures and of vaccinia virus infected HeLa cells by derivatives of trifluorothymidine.
abstract: The effects of 5-trifluoromethyluracil (F3Thy), 5-trifluoromethyl-2'-deoxyuridine (F3dThd), F3dThd-5'-P, and F3dThd-5'-methylphosphonate on the growth of HeLa cells, Novikoff hepatoma cells, L5178Y mouse leukemia cells, and on the replication of vaccinia virus in HeLa cells have been determined. F3Thy and F3dThd-5'-methylophosphonate were approximately 500-fold and 100-fold less effective, respectively, than F3dThd or F3dThd-5'-P in their inhibition of these cells. F3dThd and F3dThd-5'-P are potent inhibitors of vaccinia viral replication of HeLa cells. The nucleoside and nucleotide were 1,000-fold more inhibitory than the free base. F3dThd was nost inhibitory when added between 1 and 2 h post-infection; however, it was also somewhat inhibitory when added at later times.
mesh_terms: D000818:Animals; D006528:Carcinoma, Hepatocellular; D002455:Cell Division / Q000187:drug effects; D002460:Cell Line; D003864:Depression, Chemical; D006367:HeLa Cells / Q000187:drug effects*; D007942:Leukemia, Experimental; D008113:Liver Neoplasms; D051379:Mice; D013936:Thymidine / Q000031:analogs & derivatives*; D014271:Trifluridine / Q000008:administration & dosage / Q000031:analogs & derivatives / Q000494:pharmacology*; D014616:Vaccinia virus / Q000187:drug effects*; D014779:Virus Replication / Q000187:drug effects*
chemical_list: D014271:Trifluridine; D013936:Thymidine