Project description:Mucosal healing is a key treatment goal for inflammatory bowel disease, and epithelial regeneration is required for an intact gut epithelium. Long noncoding RNAs are involved in the development of inflammatory bowel disease. Here, we investigated the role of a novel long noncoding RNA, Gm31629, in epithelial regeneration. We used RNA-seq to to detail the global programme of gene expression in distal colon tissues from WT and Gm31629-/-.
Project description:Effects of aldosterone on the transcriptome in distal colon. Expression of genes was studied in distal colon surface cells from aldosterone treated vs. vehicle treated rats.
Project description:To perform a global analysis of high fiber diet-induced changes in gene expression in various compartments of the colonic microenvironment, we employed a spatial transcriptomic analysis using the 10X Genomics® platform. This technique allowed for visualization of gene expression in histological cross-sections of the distal colon with spatial information and therefore enabled detection of differentially expressed genes simultaneously in diverse cell types, together with information about their anatomical location in the tissue. Distal colon samples were processed using a Visium Spatial Gene Expression Slide & Reagent Kit (PN-1000184, 10X Genomics) as per the manufacturer’s instructions. Unbiased clustering divided the colon into four distinct zones: epithelium, lamina propria & submucosa, muscularis, and neuronal plexus, as visualized by hematoxylin and eosin (H&E) staining.
Project description:The disruption of the mucosal barrier of the digestive tract is a common pathological change in the elderly, which often causes inflammatory bowel disease among old people.Given that microRNA (miRNA) molecules are dysregulated in many diseases, the miRNA expression in young and old normal distal colon mucosa in mice was determined by high-throughput analysis. Three 2-month-old mice and 3 24-month-old were enrolled in this study. We used sequencing analysis to identify miRNA expression in the distal colon mucosa.
Project description:In humans with UC, low-grade dysplasia also develops predominantly in the distal colon, progresses more rapidly to neoplasia than proximal colon low-grade dysplasia and associates with worse patient prognosis. In a mouse model of colitis-associated carcinogenesis induced by administration of the mutagen AOM and the luminal toxin DSS, tumors also develop exclusively in the distal part of the large intestine. We monitored global changes in the transcriptome of mouse proximal and distal colon during exposure to AOM/DSS with the aim to define biological pathways and processes that characterize regional responses of the large intestine to colitis-associated carcinogenesis.
Project description:The disruption of the mucosal barrier of the digestive tract is a common pathological change in the elderly, which often causes inflammatory bowel disease among old people.Given that microRNA (miRNA) molecules are dysregulated in many diseases, the miRNA expression in young and old normal distal colon mucosa in humans was determined by high-throughput analysis. Three young people (27, 28, and 36 years of age) and 3 aged people (72, 79, and 81 years of age) were enrolled in this study. We used microarray analysis to identify miRNA expression in the distal colon mucosa.
