title: Enhancement of oncogenesis in C3H/10T1/2 mouse embryo cell cultures by saccharin.
abstract: Impure and pure samples of saccharin (2 milligrams per milliliter) did not produce oncogenic transformation of C3H/10T1/2, clone 8, mouse embryo fibroblasts. However, after treatment of the cells with a nontransforming initiating dose (0.1 microgram per milliliter) of 3-methylcholanthrene, continuous treatment with either sample of saccharin (100 micrograms per milliliter) led to significant transformation. It is concluded that in this system saccharin is a cocarginogen, probably functioning as a promoting agent that is 1000-fold less active than the tumor promoter 12-O-tetradecanoyl-phorbol-13-acetate.
mesh_terms: D000818:Animals; D002273:Carcinogens; D002460:Cell Line; D002471:Cell Transformation, Neoplastic / Q000139:chemically induced*; D003043:Cocarcinogenesis; D004622:Embryo, Mammalian; D008748:Methylcholanthrene; D051379:Mice; D008809:Mice, Inbred C3H; D012439:Saccharin / Q000494:pharmacology*; D013755:Tetradecanoylphorbol Acetate
chemical_list: D002273:Carcinogens; D008748:Methylcholanthrene; D012439:Saccharin; D013755:Tetradecanoylphorbol Acetate