title: Potentiation of mitomycin C, 6-mercaptopurine, bleomycin, cis-diamminedichloroplatinum and 5-fluorouracil by mycotrienins and mycotrienols.
abstract: Mycotrienins I and II and mycotrienols I and II are ansamycin antibiotics containing a triene structure, isolated from Streptomyces rishiriensis. An amphotericin B-resistant clone (AMBR-1) derived from cultured Chinese hamster V79 cells was cross-resistant to mycotrienins I and II, but not to mycotrienol I or II. These four ansamycin antibiotics were found to potentiate significantly the action of some anti-cancer agents including 5-fluorouracil, cis-diamminedichloroplatinum, bleomycin, mitomycin C and 6-mercaptopurine against cultured V79 cells. The action of adriamycin was not potentiated. These four ansamycin antibiotics showed a synergism spectrum similar to that of smaller polyene antibiotics.
mesh_terms: D000818:Animals; D000900:Anti-Bacterial Agents / Q000494:pharmacology*; D000970:Antineoplastic Agents / Q000494:pharmacology*; D001761:Bleomycin / Q000494:pharmacology; D002455:Cell Division / Q000187:drug effects; D002460:Cell Line; D002470:Cell Survival / Q000187:drug effects; D002945:Cisplatin / Q000494:pharmacology; D006224:Cricetinae; D003412:Cricetulus; D004357:Drug Synergism; D005472:Fluorouracil / Q000494:pharmacology; D006873:Hydroquinones / Q000494:pharmacology; D018942:Macrolides; D015122:Mercaptopurine / Q000494:pharmacology; D016685:Mitomycin; D008937:Mitomycins / Q000494:pharmacology; D011809:Quinones / Q000494:pharmacology
chemical_list: D000900:Anti-Bacterial Agents; D000970:Antineoplastic Agents; D006873:Hydroquinones; D018942:Macrolides; D008937:Mitomycins; D011809:Quinones; D001761:Bleomycin; D016685:Mitomycin; C036972:mycotrienol I; C036970:mycotrienin I; C036971:mycotrienin II; C036973:mycotrienol II; D015122:Mercaptopurine; D002945:Cisplatin; D005472:Fluorouracil