Project description:The established cell lines RT4, 5637 and T24 from human bladder TCC were obtained from the Cell Bank of the Federal University of Rio de Janeiro, Brazil. The 5637 cells harbor two TP53 mutations, at codon 72 (Arg . Pro) and codon 280 (Arg . Thr).T24 cells contain a TP53 allele encoding an in-frame deletion of tyrosine 126. Both cell lines were established from high-grade bladder tumors. No specific mutations were detected in RT4 cells, which had been established from a low-grade papillary bladder tumor. The RT4 and T24 cell lines were maintained in DulbeccoM-^Rs modified EagleM-^Rs medium (Sigma-Aldrich, Inc, St Louis, MO, USA), and the 5637 cells were kept in Roswell Park Memorial Institute medium (Sigma-Aldrich). Both media were supplemented with 10% fetal bovine serum (Cultilab Ltd, Campinas, Brazil), 100 U/mL penicillin G (Sigma-Aldrich), 100 U/mL streptomycin (Sigma-Aldrich) and 1% kanamycin sulfate (Amresco, Branded Products Group, Solon, OH, USA); cells were cultured at 37M-:C in an atmosphere of 5% CO2. A pooled reference design was chosen. More specifically, each array was hybridized with the same reference sample labeled with Cy5, while the experimental samples (control or treated) were labeled with Cy3.