Project description:To better understand the molecular mechanisms underlying TYRO3 oncogenic activity in bladder carcinomas, we made use of MGH-U3, RT112 and UM-UC-5 cell lines, which were derived from a human bladder tumor and endogenously expressed the Tyro3 protein, the growth and transformation of these cell lines being dependent on Tyro3. We carried out a gene expression analysis using Affymetrix DNA arrays in this cell line treated or not withTYRO3 siRNAs.
Project description:Aberrant expression of histone deacetylases (HDACs) and their activity are associated with a broad range of tumor development. However, based on cell or tissue types, class IIA HDACs such as HDAC4 and HDAC5 may facilitate or inhibit cancer progression. The goal of this project is to examine the overall proteome changes caused by HDAC5 expression. Here, we studied the effects of stable expression of HDAC5 (that is normally downregulated or have a weak basal expression) in four urothelial carcinoma (UC) cell lines (RT112, VM-Cub-1, SW1710, and UM-UC-3) by mass spectrometry in comparison to their vector controls. We observed that HDAC5 expression in VM-Cub-1 triggered a drastic phenotype change from an epitheloid to a mesenchymal (i.e., epithelial-mesenchymal transition, EMT) and altogether diminished cell proliferation of the other three cell lines. Our mass-spec data are in line with the phenotypic transformation of VM-Cub-1. In addition, we also performed a protein expression profiling of HBLAK, a spontaneously immortalized from primary human bladder epithelial cells that can be directly compared with the four UC vector cells. HBLAK vector cells only were included for mass-spec as the cells failed to express HDAC5 after lentiviral transduction and selection.
Project description:Aberrant expression of histone deacetylases (HDACs) and their activity are associated with a broad range of tumor development. However, based on cell or tissue types, class IIA HDACs such as HDAC4 and HDAC5 may facilitate or inhibit cancer progression. The goal of this project is to examine the gene expression changes caused by HDAC5 expression. Here, we studied the effects of stable expression of HDAC5 (that is normally downregulated or have a weak basal expression) in four urothelial carcinoma (UC) cell lines (RT112, VM-Cub-1, SW1710, and UM-UC-3) by rRNA-depleted RNA-sequencing in comparison to their vector controls. We observed that HDAC5 expression in VM-Cub-1 triggered a drastic phenotype change from an epitheloid to a mesenchymal (i.e., epithelial-mesenchymal transition, EMT) and altogether diminished cell proliferation of the other three cell lines. Our RNA-seq data are in line with the phenotypic transformation of VM-Cub-1. In addition, we also performed a gene expression profiling of HBLAK, a spontaneously immortalized from primary human bladder epithelial cells that can be directly compared with the four UC vector cells. HBLAK vector cells only were included for RNA-seq as the cells failed to express HDAC5 after lentiviral transduction and selection.
Project description:To better understand the molecular mechanisms underlying altered-FGFR3 oncogenic activity in bladder carcinomas, we made use of MGH-U3 cell lines, which were derived from a human bladder tumor and endogenously expressed a mutated activated form of FGFR3 (FGFR3-Y375C), the growth and transformation of these cell lines being dependent on activated-FGFR3 activity. We conducted a gene expression analysis using Affymetrix DNA arrays in this cell line treated or not with FGFR3 siRNAs.
Project description:Genome-wide DNA methylation profiling of parental (native) and 3-bromopyruvate-resistant UM-UC-3 bladder cancer cells. The Illumina Infinium 450k Human DNA methylation Beadchip v1.2 was used to obtain DNA methylation profiles across approximately 450,000 CpGs in treatment-naive and 3-bromopyruvate-resistant UM-UC-3 bladder cancer cells.
