Project description:DNA methylation is an important regulatory mechanism that contributes to transcriptional repression. To examine whether DNA methylation affects the transcriptional changes of DNA repair genes under H2O2-induced oxidative stress, we performed reduced representation bisulfite sequencing (RRBS) in H2O2-treated and untreated HCT116 cells.
Project description:ChIP-on-chip tilling array comparing untreated human SW480 cells vs SW480 cells treated with 2mM H2O2 for 30min. Exposing cells to the reactive oxygen species, hydrogen peroxide, recruits DNA methyltransferase 1 (DNMT1) to damaged chromatin. DNMT1 becomes part of a complex(es) containing DNMT3B and members of Polycomb Repressive Complex 4. The goal was to determine the effect of hydrogen peroxide treatment on chromatin, including changes in histone modifications and binding patterns of chromatin-associated proteins. [Agilent-014706]: Two-condition: untreated SW480 cells (U) vs H2O2 treated SW480 cells (T). Five-mark: SIRT1, gamma-HA2X, DNMT1, DNMT3B, and EZH2. [Agilent-014707]: Two-condition: untreated SW480 cells (U) vs H2O2 treated SW480 cells (T). Five-mark: SIRT1, gamma-HA2X, DNMT1, DNMT3B, and EZH2. [Agilent-026595]: Two-condition: untreated SW480 cells (U) vs H2O2 treated SW480 cells (T). Five-mark: SIRT1, gamma-HA2X, DNMT1, DNMT3B, and H3. [Agilent-027811]: Two-condition: untreated SW480 cells (U) vs H2O2 treated SW480 cells (T). Four-mark: H3, 3MeK4H3, AcK16H4, and 3MeK27H3.
Project description:Transcriptional profiling of HCT116 cells compared to untreated control with HCT116 cells transfected with ZNF746 siRNA plasmid. Goal was to determine the effects of ZNF746 gene transfection on CRC progression. Two-condition experiment, HCT116 vs. ZNF746 siRNA.
Project description:rs04-10_oxydative--stress - time course h2o2 treatment - Effect of an hydrogen peroxide treatment on gene regulation in arabidopsis cells - Arabidopsis cells (5 days after subculturing) were cultured at 21degreeC, 8 h photoperiod under agitation. H2O2 2.5 uM was added to cells 5 days after subculturing and 2 hours after the beginning of the light period. Treated and control cells were collected 15 min, 1 h, 5 h and 12 h after treatment. Keywords: treated vs untreated comparison
Project description:Purpose: Next-generation sequencing (NGS) has revolutionized systems-based analysis of cellular pathways. The goals of this study are to compare NGS-derived H2O2-treated HCC transcriptome profiling (RNA-seq) to NGS-derived mock-treated HCC transcriptome profiling. Methods: HCC mRNA profiles of mock-treated Huh7 cells and H2O2-treated Huh7 cells were generated by deep sequencing, in duplicate, using Illumina Pipeline (CASAVA) v1.8.2. The sequence reads that passed quality filters were analyzed at the transcript isoform level with TopHat followed by Cufflinks. qRT–PCR validation was performed using TaqMan and SYBR Green assays Results: RNA-seq data validated with qRT–PCR. RNA-seq data had a linear relationship with qRT–PCR for more than four orders of magnitude and a goodness of fit (R2) of 0.90. Conclusions: We conclude that our study represents the first detailed analysis of H2O2-treated HCC cells transcriptomes compared to mocke-treated HCC cells, with biologic replicates, generated by RNA-seq technology.
Project description:Genome wide DNA methylation profiling of A2780 cells untreated (mock), treated with H2O2 for 30 min (H2O2 30 min), or treated with H2O2 for 30 min with additional 2.5 hour resting ( H2O2 3h) . The Illumina’s Infinium Human Methylation450 Beadchip Kit (WG-314-1001) was used to obtain DNA methylation profiles across approximately 450,000 CpGs.
