Project description:We used microarray analysis to investigate differential gene expression on the induced radio-resistant colorectal cancer cell lines compared to the parental cell lines. Induced radio-resistant colorectal cancer cell lines were established in our lab to verify their cellular and genetic characteristics. They were exposed to Cesium-137 gamma-radiation up to a total 80 Gy.
Project description:We used microarray analysis to investigate differential gene expression on the induced radio-resistant colorectal cancer cell lines compared to the parental cell lines.
Project description:Oxaliplatin resistance was induced in 2 colorectal cancer cell lines (LoVo-92, wt-p53 and LoVo-Li, functionally inactive p53) and one ovarian cancer cell line (A2780, wt-p53). Resistance was induced by weekly exposure to oxaliplatin for 4 hrs or 72 hrs with increasing concentrations for a period of 7 months Genomic DNA of oxaliplatin and cisplatin resistant colorectal cancer and ovarian cancer cell lines as well as the parental cell lines were labeled and subsequently hybridized against pooled reference DNA of healthy volunteers of the opposite gender using across array hybridization. Extracted raw-data were normalised and smoothend using the R-script NOWAVE resulting in normalised log2 ratio profiles of resistant cell line versus parental cell line and parental cell line versus reference DNA.
Project description:microRNA and mRNA profiling was conducted for parental cell lines and cell lines resistant to trifluridine in 3 colorectal cell lines (DLD-1, HCT-116, RKO). We hypothesized that a detailed comparison between miRNA and mRNA expression might reveal the mechanism for acquired resistant to trifluridine in colorectal cancer.
Project description:microRNA and mRNA profiling was conducted for parental cell lines and cell lines resistant to trifluridine in 3 colorectal cell lines (DLD-1, HCT-116, RKO). We hypothesized that a detailed comparison between miRNA and mRNA expression might reveal the mechanism for acquired resistant to trifluridine in colorectal cancer.
Project description:We observed human colorectal cancer cell lines obtained resistance under treatment, and resistant cells switched back to sensitive state when the treatment is withdrawn. To understand gene expressions change during this process, we performed Affymetrix experiments for parental, R20 (resistant), and W20 (withdrawal treatment) clones for three colorectal cancer cell lines.
Project description:Copy number analysis to compare parental colorectal cancer cell lines and their selumetinib-resistant derivatives and identify gene copy changes that might contribute to resistance
