title: Cell cycle phase sensitivity to cis-dichloro-bis (isopropylamine) trans-dihydroxy platinum (IV) (CHIP).
abstract: Cis-dichloro-bis (isopropylamine) trans-dihydroxy platinum (IV) (CHIP) is a second generation platinum coordination complex now in Phase II clinical trials. In vitro studies with Chinese Hamster Ovary cell cultures show that CHIP is a phase-sensitive drug, being most cytotoxic to cells in early G1 phase and least toxic to late S and G2 phase cells. The dose-modifying factor between the drug sensitivity of cells treated in G1 and in late S phase is 1.6. These findings and their clinical significance are discussed with respect to the phase sensitivity of other cytotoxic agents.
mesh_terms: D000818:Animals; D002453:Cell Cycle / Q000187:drug effects*; D002470:Cell Survival / Q000187:drug effects*; D002478:Cells, Cultured; D002945:Cisplatin / Q000494:pharmacology; D006224:Cricetinae; D003412:Cricetulus; D005434:Flow Cytometry; D007399:Interphase / Q000187:drug effects; D008938:Mitosis / Q000187:drug effects; D009944:Organoplatinum Compounds / Q000494:pharmacology*
chemical_list: D009944:Organoplatinum Compounds; C023359:iproplatin; D002945:Cisplatin