Project description:ETS1 and RAS/ERK regulate a common gene expression program in establishing enviroment suitable for prostate cancer cell migration. ChIP-sequencing of various transcription factors
Project description:ETS1 and RAS/ERK regulate a common gene expression program in establishing enviroment suitable for prostate cancer cell migration. mRNA profiles of luciferase knockdown (WT), ETS1 knockdown, and U0126 treated DU145 cells were generated using deep sequencing, in triplicate, using Illumina HiSeq. Knockdowns were stable shRNA expression from a lentiviral construct selected with puromycin.
Project description:Chlamydia trachomatis are the etiological agents of a range of diseases and are epidemiologically associated with cervical and ovarian cancers. The interplay between host and chlamydia is highly complex, and to obtain panoramic view of the functional interplay, we performed combinatorial global phosphoproteomic and transcriptomic analyses of C. trachomatis-induced signaling. We identified numerous previously unknown C. trachomatis phosphoproteins and C. trachomatis-regulated host phosphoproteins that are substrates of kinases involved in various cellular processes. Interestingly, several host transcription factors (TFs) that are phosphorylated in C. trachomatis infections, including ETS2 repressor factor (ERF), proto-oncogenic transcription factor ETS1 are targets of ERK MAPK signaling. While these TFs were found to be essential for Chlamydia development, we demonstrated their involvement in inducing epithelial-to-mesenchymal transition in C. trachomatis infected cells by transcriptional regulation of genes involved in cellular motility and invasion. Our data reveals substantially unexplored complexity of C. trachomatis-induced signaling and provides broader insights into pro-carcinogenic potential of C. trachomatis.
Project description:In Caenorhabditis elegans, let-60 Ras controls many cellular processes, such as differentiation of vulval epithelial cells, function of chemosensory neurons, and meiotic progression in the germ line. Although much is known about the let-60 Ras signaling pathway, relatively little is understood about the target genes induced by let-60 Ras signaling that carry out terminal effector functions leading to morphological change. We have used DNA microarrays to identify 708 genes that change expression in response to activated let-60 Ras.