title: Chemosensitivity testing of human mouth carcinoma cell line.
abstract: The chemosensitivity of KB cells derived from oral epidermal carcinoma to various antitumor agents was analyzed using the MTT[3-(4,5-dimethyl-2-thiazoyl)-2,5-diphenyl-2H tetrazolium bromide] assay. Optical density (OD) for MTT assay was measured with dual wavelengths. The chemosensitivity of the drugs was evaluated by the 50% OD (OD50) of each drug concentration in the control group. Five platinum (Pt) drugs and 3 anthracycline (AC) drugs were used in this study. The chemosensitivity differed among the 5 Pt drugs. No significant difference was observed among the 3 AC drugs. A linear increase in OD corresponding to an increase in number of cells was observed. When 0.1 M sodium succinate (S.S.) was added to 0.4% MTT, the sensitivity increased five-fold compared to the control group without S.S. The MTT assay is a precise, rapid, easy and inexpensive experimental system useful for evaluation of antitumor drug sensitivity on tumor cell lines.
authors.affiliation: Department of Otolaryngology, Kansai Medical University, Osaka, Japan.
authors.forename: T
authors.initials: T
authors.lastname: Tachikawa
authors.forename: H
authors.initials: H
authors.lastname: Kumazawa
authors.forename: Y
authors.initials: Y
authors.lastname: Hori
authors.forename: S
authors.initials: S
authors.lastname: Sai
authors.forename: J
authors.initials: J
authors.lastname: Kita
authors.forename: T
authors.initials: T
authors.lastname: Yamashita
authors.forename: T
authors.initials: T
authors.lastname: Kumazawa
authors.forename: Y
authors.initials: Y
authors.lastname: Maehara
authors.forename: S
authors.initials: S
authors.lastname: Kohnoe
mesh_terms: D000903:Antibiotics, Antineoplastic / Q000494:pharmacology; D000970:Antineoplastic Agents / Q000494:pharmacology*; D002294:Carcinoma, Squamous Cell / Q000473:pathology*; D002452:Cell Count / Q000187:drug effects; D002455:Cell Division / Q000187:drug effects*; D002460:Cell Line; D002470:Cell Survival / Q000187:drug effects*; D004305:Dose-Response Relationship, Drug; D006801:Humans; D009062:Mouth Neoplasms / Q000473:pathology*; D009944:Organoplatinum Compounds / Q000494:pharmacology; D013386:Succinates / Q000494:pharmacology; D019802:Succinic Acid; D014407:Tumor Cells, Cultured / Q000187:drug effects*; D014410:Tumor Stem Cell Assay
chemical_list: D000903:Antibiotics, Antineoplastic; D000970:Antineoplastic Agents; D009944:Organoplatinum Compounds; D013386:Succinates; D019802:Succinic Acid