Project description:Transcriptional profiling of 4TO7 cells featuring ectopic expression of miR-23b/27b/24 compared to vector control cells. Gene expression changes will be examined as potential direct targets of the miRNAs for use in later studies on metastasis suppression or activation.
Project description:Transcriptional profiling of 4TO7 cells featuring ectopic expression of miR-23b/27b/24 compared to vector control cells. Gene expression changes will be examined as potential direct targets of the miRNAs for use in later studies on metastasis suppression or activation. Two-condition experiment, miRNA overexpressing cells vs vector control. Biological replicates: 2 transfection replicates each.
Project description:Analysis of genes regulated by miR-23b/-27b overexpression in aggressive PC3-ML cells, confirmed by antagomiR inhibition of miR-23b and miR-27b in the relatively indolent cell line LNCaP. Genes that were downregulated in PC3-ML overexpression and upregulated with LNCaP inhibition were further explored as downstream targets of miR-23b/-27b. PC3-Ml cells were transduced with miR-23b/-27b or a scrambled miRNA control, and only cells expressing greater than 95% transduction efficiency were used for array. LNCaP cells were transfected with antagomiRs to miR-23b and miR-27b, or a non-coding control.
Project description:Analysis of genes regulated by miR-23b/-27b overexpression in aggressive PC3-ML cells, confirmed by antagomiR inhibition of miR-23b and miR-27b in the relatively indolent cell line LNCaP. Genes that were downregulated in PC3-ML overexpression and upregulated with LNCaP inhibition were further explored as downstream targets of miR-23b/-27b.
Project description:To identify differentially expressed genes by anti cancer treatments (microRNAs, siRNAs and chemical compounds) in human cancer, several cell lines (prostate cancer, renal cell carcinoma and head and neck squamous cell carcinoma) were subjected to Agilent whole genome microarrays. Human cancer cell lines (PC3, DU145, LNCap, A498, 786-O, FaDu and SAS) were treated with miRNAs (miR-145, miR-375, miR-23b, miR-24, miR-27b and miR-29a), siRNAs (si-CAV2, si-LAMB3 and si-GOLM1) and chemical compunds (genistein, wogonin and CXCL10).
Project description:Understanding transcriptional changes during cancer progression is of crucial importance to develop new and more efficacious diagnostic and therapeutic approaches. It is well known that ErbB2 is overexpressed in about 25% of human invasive breast cancers. We have previously demonstrated that p130Cas overexpression synergizes with ErbB2 in mammary cell transformation and promotes ErbB2-dependent invasion in three-dimensional (3D) cultures of human mammary epithelial cells. Here, by comparing coding and non-coding gene expression profiles, we define the invasive signatures associated with concomitant p130Cas overexpression and ErbB2 activation in 3D cultures of mammary epithelial cells. Specifically, we have found that genes involved in amino acids synthesis (CBS, PHGDH), cell motility, migration (ITPKA, PRDM1), and angiogenesis (HEY1) are upregulated, while genes involved in inflammatory response (SAA1, S100A7) are downregulated. In parallel, we have shown that the expression of specific miRNAs is altered. Among these, miR-200b, miR-222, miR-221, miR-R210, and miR-424 are upregulated, while miR-27a, miR-27b, and miR-23b are downregulated. Overall, this study presents, for the first time, the gene expression changes underlying the invasive behavior following p130Cas overexpression in an ErbB2 transformed mammary cell model. To identify transcriptional changes occurring during invasion we have performed a comparative microarray analysis of non coding RNA (miRNA) between MCF10A.B2 acini over-expressing p130Cas with activation of ErbB2 and control cells.
Project description:Transcriptional profiling of 4TO7 cells stably overexpressing miR-200s or CDH1. We observe a dramatic shift in the gene signatures when miR-200s (cluster 2; miR-200c/141, or both clusters) are overexpressed relative to controls. However, cluster 1 overexpression (miRs-200b/a/429) alone or CDH1 overexpression does not induce global changes in gene expression to levels observed for cluster 2 (miR-200c/141) or both clusters together. One cell line (4TO7) cells: four different overexpression experiments, Cluster 1, Cluster 2, Clusters 1+2, CDH1, and respective controls, Puro vec, Hygro vec, Puro+Hygro vec and Puro vec. Each experiment has two biological replicates. Total, 16 samples.