title: [Chemosensitivity testing on human bladder cancer cell lines, using MTT-assay].
abstract: Sensitivity of human transitional cancer cells to anticancer agents was evaluated utilizing cultured cell lines. T-24, MGH-U1 and KU-1. Simultaneously, chemosensitivity tests combined with 42 degrees C hyperthermia were performed. Cells inoculated in 96-well multiplates for 48 hours, were exposed to graded concentrations of doxorubicin (DOX), mitomycin C (MMC), bleomycin (BLM), peplomycin (PEP), cis-diamminedichloroplatinum (II) (CDDP) for 2 to 48 hours. After additional culture for 48 hours, viable cell numbers were estimated by the dye exclusion assay (DEA) and tetrazolium-based colorimetric assay (MTT-assay). In 2-hour exposure, most of anti-cancer agents did not significantly suppress the growth of the cell lines. Only DOX suppressed the cell growth. In 6-hour and 48-hour exposure, DOX, MMC and CDDP showed significant growth inhibitory effect on the transitional cancer cell lines. The effect of BLM and PEP was insufficient. The hyperthermia of 42 degrees C enhanced the growth inhibitory effect of MMC and CDDP, but did not influence the effect of DOX. In comparison of DEA and MTT-assay, viable cell numbers measured by DEA well correlated with the optical density in MTT-assay. Since MTT-assay is a semiautomated, rapid and inexpensive assay with good reproducibility, it can be a useful substitute for DEA in chemosensitivity testing of cancer cells.
authors.forename: M
authors.initials: M
authors.lastname: Sawamura
authors.forename: K
authors.initials: K
authors.lastname: Odajima
authors.forename: K
authors.initials: K
authors.lastname: Nagakura
authors.forename: H
authors.initials: H
authors.lastname: Nakamura
mesh_terms: D000970:Antineoplastic Agents / Q000494:pharmacology*; D002295:Carcinoma, Transitional Cell / Q000473:pathology*; D003124:Colorimetry; D004354:Drug Screening Assays, Antitumor / Q000379:methods; D006801:Humans; D006979:Hyperthermia, Induced; D011237:Predictive Value of Tests; D013778:Tetrazolium Salts; D013844:Thiazoles; D014407:Tumor Cells, Cultured / Q000187:drug effects / Q000473:pathology; D001749:Urinary Bladder Neoplasms / Q000473:pathology*
chemical_list: D000970:Antineoplastic Agents; D013778:Tetrazolium Salts; D013844:Thiazoles; C022616:thiazolyl blue