title: Cultured human bladder tumors for pharmacodynamic studies.
abstract: Human bladder tumor fragments were cultured on collagen gel. In this system, the three dimensional architecture, cell-to-stroma and cell-to-cell interactions, and tumor heterogeneity were maintained. Cell viability and labeling index (LI) were determined by exposure to 3H-thymidine and autoradiography. Of the samples from 20 patients with transitional cell carcinoma, 14 (70%) were successfully cultured and had a mean LI of 32%. In addition, one specimen from a patient with squamous cell carcinoma was cultured and had a LI of 61%. Cultured samples were tested for chemosensitivity using a two hour exposure of mitomycin C in concentrations ranging from one to 50 micrograms./ml. A dose-dependent relationship was demonstrated; LI decreased as mitomycin C concentrations increased. The methodology described provides an alternative to suspension or monolayer techniques of culturing human bladder tumors for pharmacological studies.
authors.affiliation: College of Pharmacy, Ohio State University, Columbus 43210.
authors.forename: T D
authors.initials: TD
authors.lastname: Schmittgen
authors.forename: J L
authors.initials: JL
authors.lastname: Au
authors.forename: M G
authors.initials: MG
authors.lastname: Wientjes
authors.forename: R A
authors.initials: RA
authors.lastname: Badalament
authors.forename: J R
authors.initials: JR
authors.lastname: Drago
mesh_terms: D000970:Antineoplastic Agents / Q000494:pharmacology*; D001345:Autoradiography; D002294:Carcinoma, Squamous Cell / Q000188:drug therapy*; D002295:Carcinoma, Transitional Cell / Q000188:drug therapy*; D004305:Dose-Response Relationship, Drug; D004354:Drug Screening Assays, Antitumor / Q000379:methods; D006801:Humans; D016685:Mitomycin; D008937:Mitomycins / Q000494:pharmacology; D014407:Tumor Cells, Cultured / Q000187:drug effects; D001749:Urinary Bladder Neoplasms / Q000188:drug therapy*
chemical_list: D000970:Antineoplastic Agents; D008937:Mitomycins; D016685:Mitomycin