Rattus norvegicus
Ontology highlight
ABSTRACT:
PROVIDER: PRJNA320555 | ENA |
REPOSITORIES: ENA
Similar Datasets
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Project description:Background: A recently developed animal model of the genetic disease is the cystic fibrosis (CF) rat, which similar to other animal models of CF exhibits a lethal intestinal phenotype. To begin characterizing the CF rat intestinal phenotype, we investigated global gene expression in the CF rat small intestine. Methods: Total RNA was extracted from full thickness of the entire small intestines of wild type (WT) and CF rats just before weaning. Results: There were 890 genes with significantly different expression levels (1.2-fold cutoff) comparing CF to wild type (WT), including 485 genes increased and 405 decreased in the CF intestine. The major pathways associated with these changes were inflammation, lipid metabolism, cytochrome P450-mediated degradative pathways, and cell growth/death. Comparison of the rat RNA-Seq dataset to earlier microarray analysis using a CFTR knockout mouse showed significant overlap with the CF rat small intestine. Conclusions: The small intestine of the new CF rat model exhibits numerous alterations in gene expression similar to other animal models of CF which indicate this will be an additional new model to study the gut effects CF.
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Project description:Analysis of the cystic fibrosis gene Cftr in the colon and small intestine of Cftr-deficient murine model. The hypothesis was loss of Cftr altered expression of genes important in intestinal homeostasis and oncogenic signaling pathways. The results identified potential roles of Cftr in up- or down-regulating major gene clusters that belong to groups of immune response, ion channel, intestinal stem cell and other growth regulators. Total RNA was isolated from the normal intestine of three Apc wildtype Cftr wildtype and three Apc Cftr-deficient mice. For the colon intestinal epithelia from the same region of the distal colon of each mouse was separated from the rest of the intestine prior to RNA isolation. Therefore RNA was obtained from only epithelial cells. For the small intestine, a section of the mid-duodenum from each mouse was sheared of villi prior to RNA isolation. Therefore RNA was obtained from whole duodenum (minus villi), containing epithelia cells but also stromal and other cells. RNA Seq was then conducted on all samples, with at least two replicates for each biological sample.
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