Project description:The goal of this study is to analyze the transcriptome profiling (RNA-seq) after ISL1 knockdown. The objective of this study is to elucidate the mechanisms of ISL1 in gastric carcinogenesis, RNA-Seq is performed in BGC823 cells with stable ISL1 knockdown. Comparison and identification of the candidate genes based on the intersection of RNA-seq showed that upregulated and downregulated genes had ISL1-bound regions.
Project description:We investigated microRNA expression profiles of gastric cancer tissues from Pdx-1-Cre;Cdh1F/+;Trp53F/F;Smad4F/F mice (pChePS_GC) and normal gastric epithelium (NGE) from Pdx1-1-Cre-negative mice. We used microarrays to detail the global microRNA expression underlying gastric carcinogenesis and identified distinct classes of up and down-regulated microRNAs during this process.
Project description:Because gastric cancer cells already had genetic and epigenetic alterations which can affect the gastric carcinogenesis, we tried to characterize genetic and epigenetic changes during gastric carcinogenesis. To do this, we performed MBD sequencing and RRBS sequencing. MBD and RRBS sequencing of gastric mucosa, intestinal metaplasia, and gastric cancer cells from one patient were generated by NGS using Illumina GAII.
Project description:Because gastric cancer cells already had genetic and epigenetic alterations which can affect the gastric carcinogenesis, we tried to characterize genetic and epigenetic changes during gastric carcinogenesis. To do this, we performed MBD sequencing and RRBS sequencing. MBD and RRBS sequencing of gastric mucosa, intestinal metaplasia, and gastric cancer cells from one patient were generated by NGS using Illumina GAII.
Project description:Helicobacter pylori (H. pylori) infects nearly half of the global population. H. pylori infection is associated with various gastric diseases and is a recognized causative factor for gastric cancer. The mechanisms underlying the persistent colonization of H. pylori and its role in the development and progression of gastritis-associated carcinogenesis remain unclear. To investigate the pathogenic mechanisms of H. pylori infection, we performed RNA sequencing (RNA-seq) on H. pylori-infected gastric epithelial cells and analyzed the gene expression patterns induced by H. pylori infection, aiming to provide critical insights for understanding its disease-driving pathways.
Project description:Because gastric cancer cells already had genetic and epigenetic alterations which can affect the gastric carcinogenesis, we tried to characterize genetic and epigenetic changes during gastric carcinogenesis. To do this, we performed SNP array.
Project description:Gastric cancer is one of the most common causes of cancer-related death worldwide, and the molecular mechanisms involved in gastric carcinogenesis are still not fully understood. To gain molecular understanding of carcinogenesis, progression, and diversity of gastric cancer, 111 human gastric cancer tissues and 21 noncancerous gastric tissues were analyzed by high-density oligonucleotide microarray in this study. These results provide not only a new molecular basis for understanding biological properties of gastric cancer, but also useful resources for future development of therapeutic targets and diagnostic markers for gastric cancer.
Project description:Understanding factors that drive development and function of the sinoatrial node (SAN) is crucial to development of potential therapies for sinus arrhythmias, including potential generation of biological pacemakers. Here, we identify a key cell autonomous role for the LIM homeodomain transcription factor ISL1 for survival, proliferation and function of pacemaker cells throughout development. Chromatin immunoprecipitation assays performed utilizing antibody to ISL1 in chromatin extracts from FACS purified SAN cells demonstrated that ISL1 directly binds genomic regions within several genes critical for normal pacemaker function, including subunits of the L-type calcium channel, Ank2, and Tbx3. Other genes implicated in abnormal heart rhythm in humans were also direct downstream targets of ISL1 in SAN cells. Our studies represent the first in vivo ChIP-seq studies for SAN cells which provide a basis for further exploration of factors critical to SAN formation and function and highlight the potential for utilization of ISL1 in combination with other SAN transcription factors for generating pacemaker cells for therapy or drug screening purposes. ISL1 ChIP-seq profiling was performed in Hcn4-H2BGFP SAN cells purified from neonatal hearts.