Project description:To investigate the role of TGF-β1-regulated miRNAs in the progression of colorectal cancer,we performed comprehensive miRMA microarray analysis on RNA derived from typical human colorectal cancer cell lines and TGF-β1 knock-down human colorectal cancer cell lines. We identified a novel set of TGF-β1-related miRNAs.
Project description:We used expression profiling of colorectal cancer and endometrial cancer cell lines treated with demethylating agents to search for epigenetically regulated miRNAs. The study included three MMR-deficient colorectal cancer cell lines (HCT116, HCT15, and RKO), two MMR-proficient colorectal cancer cell lines (SW480, and T84) and two MMR-deficient endometrial cancer cell lines (AN3CA and HEC59).
Project description:Genome-wide view of the interplay between methylation and RNA expression in this colorectal cancer model was obtained. MBD-sequencing of 8 colorectal cancer cell lines.
Project description:Solid tumors are complex organs comprising neoplastic cells and stroma, yet cancer cell lines remain widely used to study tumor biology, biomarkers and experimental therapy. Here, we performed a fully integrative analysis of global proteomic data comparing human colorectal cancer (CRC) cell lines to primary tumors and normal tissues. We found a significant, systematic difference between cell line and tumor proteomes, with a major contribution from tumor stroma proteomes. Nevertheless, cell lines overall mirrored the proteomic differences observed between tumors and normal tissues, in particular for genetic information processing and metabolic pathways, indicating that cell lines provide a system for the study of the intrinsic molecular programs in cancer cells. Intersection of cell line data with tumor data provided insights into tumor cell specific proteome alterations driven by genomic alterations. Our integration of cell line proteogenomic data with drug sensitivity data highlights the potential of proteomic data in predicting therapeutic response. We identified representative cell lines for the proteomic subtypes of primary tumors, and linked these to drug sensitivity data to identify subtype-specific drug candidates.
Project description:To elucidate whether Enterotoxigenic Bacteroides fragilis (ETBF) plays a role in intestinal inflammation and colorectal carcinogenesis, a RNA-seq analysis was performed to compare the microRNA profiles of ETBF treated HCT116 colorectal cancer cell lines.
Project description:To elucidate whether Enterotoxigenic Bacteroides fragilis (ETBF) plays a role in intestinal inflammation and colorectal carcinogenesis, a RNA-seq analysis was performed to compare the microRNA profiles of exosomes derived from ETBF-treated HCT116 colorectal cancer cell lines.
Project description:Somatic DNA alteration underlies tumor development and progression, and gives rise to tumors with diverse genetic contexts. Here, we identify in a collection of 29 colorectal cancer cell lines and 226 primary colorectal tumors recurrent amplification of chromosome 13, an alteration highly restricted to colorectal-derived cancers. A minimal region of amplification on 13q12.2 pinpoints caudal type homeobox transcription factor CDX2, a master regulator of anterior-posterior patterning, midgut development, and intestinal epithelial cell differentiation and maintenance. In contrast to its described role as a colorectal tumor suppressor, we show that in the context of genomic amplification, CDX2 is required for proliferation and anchorage-independent growth of colorectal cancer cells. By genome-wide expression and location analysis, we reveal that CDX2 directly promotes expression of Wnt pathway genes. Further results suggest that CDX2 induces expression of intestinal differentiation markers and modulates β-catenin transcriptional activity. These data characterize CDX2 as a novel lineage-survival oncogene deregulated in colorectal cancer. ChIP-seq analysis of CDX2 binding sites in COLO320 cells