Transcription profiling of human eosinophilic esophagitis biopsies, cultured and stimulated with IL-13
ABSTRACT: 3 eosinophilic esophagitis biopsies, cultured and stimulated with IL-13 : each of them was either left unstimulated or stimulated (100ng for 48h); We used microarray to uncover the IL-13-induced genes in esophageal epithelial cells of the esophagus Experiment Overall Design: 3 biopsies from EE patients were obtained and primary epithelial cell were cultured and either left unstimulated or stimulated with IL-13 followed by RNA extraction and hybridization on Affymetrix microarrays.
The Journal of allergy and clinical immunology 20071201 6
BACKGROUND: Eosinophilic esophagitis (EE) is an emerging worldwide disease that mimics gastroesophageal reflux disease. Early studies have established that esophageal eosinophilia occurs in association with T(H)2 allergic responses, and we recently identified an EE-specific esophageal transcriptome that included eotaxin-3. OBJECTIVE: We sought to determine the mechanism by which this T(H)2 response leads to EE. METHODS: Real-time PCR and microarray analysis were performed on RNA extracted from e ...[more]
Project description:3 eosinophilic esophagitis biopsies, cultured and stimulated with IL-13 : each of them was either left unstimulated or stimulated (100ng for 48h) We used microarray to uncover the IL-13-induced genes in esophageal epithelial cells of the esophagus Keywords: treated vs non treated Overall design: 3 biopsies from EE patients were obtained and primary epithelial cell were cultured and either left unstimulated or stimulated with IL-13 followed by RNA extraction and hybridization on Affymetrix microarrays.
Project description:Nanostring nCounter Human miRNA assay (v1) of esophageal mucosal biopsies from children with eosinophilic esophagitis and controls Individual esophageal mucosal biopsies from children with eosinoniphilic esophagitis and controls were analysed for detection of microRNA
Project description:Serum from children with active and inactive treated eosinophilic esophagitis was analyzed for detection of microRNA Individual serum samples from children with eosinophilic esophagitis were analyzed for detection of microRNA. (n=5 for active EoE and n=5 for inactive EoE)
Project description:Eosinophlic esophagitis (EoE) is increasely recognized as an antigen-drived disorder. The goal of this study is to reveal the gene expression changes in EoE before and after a successful glucocorticoid steroid treatment. We used microarrays to identify distinct genes involving the pathophysiology of EoE. Esophageal mRNA from the epithelial layers of 5 paired paraffin-embedded biopsies before and after treatment with glucocorticosteroids were harvested and profiled using Affymetrix Human Gene 1.0 ST array to generate differentially regulated mRNA transcripts.
Project description:We utilized RNA sequencing to expand and better define the molecular entities involved in the transcriptional programming within the eosphagus in eosinophilic esophagitis (EoE) Examination of differentially expressed genes from RNA sequencing data performed on esophageal biopsy specimen from 6 healthy controls and 10 patients with active EoE
Project description:Eosinophlic esophagitis (EoE) is increasely recognized as an antigen-drived disorder. The goal of this study is to reveal the miRNA expression changes in EoE before and after a successful glucocorticoid steroid treatment. Total RNA was extracted from the esophageal epithelial layers of 5 paired paraffin-embedded biopsies before and after treatment with glucocorticosteroids using RecoverAll Total Nucleic Acid Extraction Kit for FFPE tissues (Ambion, Austin, TX). Five nanograms of total RNA was reverse-transcribed using the Taqman MicroRNA Reverse Transcription Kit and the Megaplex RT primer Human Pool A (Applied Biosystems). The reverse-transcribed cDNA was then pre-amplified in 12 cycles of PCR using Taqman PreAmp Master Mix and the Megaplex PreAmp primers, Human Pool A (Applied Biosystems). The cDNA’s were then diluted and loaded on to a Taqman Human miRNA Array card A (Platform GPL9731 ; Applied Biosystems), which contains probes for 377 distinct miRNAs. The Array cards were run on an ABI HT7900 qPCR instrument. Ct values were obtained for all miRNAs represented on the cards and fold changes in expression were calculated using the delta delta Ct (ddCt) method.
Project description:Despite the well-recognized role of IL-13–induced transcriptional responses in allergic inflammation, the epigenetic mechanisms driven by IL-13 have not been well defined. We interrogated the transcriptional and epigenetic signatures of IL-13-induced epithelial responses focusing on the chromatin activation marks H3K4me3, H3K9Ac, and H3K27Ac. ChIP-sequencing analysis revealed that IL-13–inducible genes were epigenetically poised for induction and continued to accumulate epigenetic changes in response to IL-13. By intersecting the transcriptome and the epigenome of the IL-13 response, we identified neurotrophic tyrosine kinase receptor 1 (NTRK1) as a major target of IL-13 in epithelial cells. Using eosinophilic esophagitis as a model system for human allergic inflammation, we found that NTRK1 was dramatically induced in inflamed esophageal biopsies, and downstream mediators of NTRK1 signaling were elevated in diseased tissue. The NTRK1 ligand nerve growth factor (NGF) was constitutively expressed in control and disease states, indicating that induction of the receptor by IL-13 limited pathway activation. In epithelial cells, NGF and IL-13 synergistically induced transcription and secretion of the key eosinophil chemoattractant CCL26 (eotaxin-3). In summary, we demonstrate that IL-13–mediated allergic responses are epigenetically driven and identify NTRK1 as a novel epigenetic and transcriptional target of IL-13 that uniquely contributes to allergic inflammation. Human esophageal epithelial cell line TE-7 was stimulated with IL-13 at 100 ng/ml for 2 hr, 6 hr and 24 hr and subjected to RNA-sequencing. In parallel, TE-7 cells were induced with IL-13 for 6 hr and subjected to ChIP-sequencing analysis for H3K4me3, H3K9Ac and H3K27Ac activating chromatin marks.
Project description:Aim of this study was to compare the effects of the lambda interferons IL-28A and IL-29 regarding transcriptional activation/repression of gene expression. For this purpose, the hepatic cell line Huh7 was stimulated with 100 ng/ml IL-28A or IL-29 for 6 hours or was left unstimulated. Then, gene expression of IL-28A or IL-29 treated cells was compared to expression in unstimulated cells
Project description:Significant recent progress has been made with understanding eosinophilic gastrointestinal disorders (EGIDs) yet most studies have focused on eosinophilic esophagitis (EoE). Herein, we aimed to provide fundamental information about the molecular characteristics of eosinophilic gastritis (EG). Overall design: RNA was isolated from gastric biopsies from control patients (n=5) and patients with EG (n=5) followed by hybridization on Affymetrix microarrays.