Gene expression of human small intestine generated by biopsy specimens
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ABSTRACT:
ORGANISM(S): Homo sapiens
PROVIDER: GSE69762 | GEO | 2015/06/11
SECONDARY ACCESSION(S): PRJNA286681
REPOSITORIES: GEO
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Project description:The entire small intestine was observed by balloon endoscopy. Biopsy specimens were taken from jejunum, ileum and colon, respectively. Four Crohn's disease patients and four healthy controls were compared.
2015-06-11 | E-GEOD-69762 | biostudies-arrayexpress
Project description:RNA sequencing for endoscopic biopsy tissue samples from controls (jejunum [S170], n=1; ileum [SN2], n=1) and patients with Crohn's disease (jejunum [non-inflamed area, A2/L2+L4/B2, infliximab maintenance therapy, S93], n=1; ileum, [non-inflamed area, A2/L2/B2, infliximab maintenance therapy, S95], n=1). Organoid culture was performed using intestinal crypts derived from these specimens, as described previously (Sato et al. Nature 2009; 459: 262–265]. Organoids were sub-cultured at least 6 passages. RNA sequencing was conducted for organoids on day 3, day 6, and day 9 [S170 and S93], and organoids treated with TNFɑ 30 ng/ml on day 3, day 6, and day 9 [S170 and S93]. RNA sequencing was conducted for organoids on day 6 and day 9 [N2 and S95], and organoids treated with TNFɑ 30 ng/ml on day 6 and day 9.
2021-04-27 | GSE173294 | GEO
Project description:The objective was to determine the expression of a wide range proteins pertinent to metabolism and disposition of chemicals and nutrients in the intestinal epithelium. Ileum and jejunum biopsy specimens were obtained from 16 patients undergoing gastrointestinal elective surgery. Mucosal fractions were prepared and analysed using targeted and global proteomic approaches. A total of 29 enzymes, 32 transporters, 6 tight junction proteins, 2 adhesion proteins, alkaline phosphatase, thioredoxin, 5 markers and 1 regulatory protein were quantified; 60 for the first time.
2021-09-09 | PXD020987 | Pride
Project description:Background and Aims: Although the zinc finger transcription factor GATA4 has been implicated in regulating jejunal gene expression, the contribution of GATA4 in controlling jejunal physiology has not been addressed. Methods: We generated mice in which the Gata4 gene was specifically deleted in the small intestinal epithelium. Measurements of plasma cholesterol and phospholipids, intestinal absorption of dietary fat and cholesterol, and gene expression were performed on these animals. Results: Mice lacking GATA4 in the intestine displayed a dramatic block in their ability to absorb cholesterol and dietary fat. Comparison of the global gene expression profiles of control jejunum, control ileum, and GATA4 null jejunum by gene array analysis demonstrated that GATA4 null jejunum lost expression of 53% of the jejunal-specific gene set and gained expression of 47% of the set of genes unique to the ileum. These alterations in gene expression included a decrease in mRNAs encoding lipid and cholesterol transporters as well as an increase in mRNAs encoding proteins involved in bile acid absorption. Conclusion: Our data demonstrate that GATA4 is essential for jejunal function including fat and cholesterol absorption and confirm that GATA4 plays a pivotal role in determining jejunal versus ileal identity. Experiment Overall Design: Total RNA was harvested from the following sources and used to Affymetrix array analysis following manufacturer defined protocols: Experiment Overall Design: control jejunum (Gata4loxP/+VilCre), 3 male mice, adult (6-8 wk) Experiment Overall Design: mutant jejunum (Gata4loxP/-VilCre), 3 male mice, adult (6-8 wk) Experiment Overall Design: control ileum (Gata4loxP/+VilCre), 3 male mice, adult (6-8 wk). Experiment Overall Design: A total of nine Mouse Genome 430_2.0 arrays were hybridized for this study. Experiment Overall Design: Jejunum was defined as 10 cm from the pyloric sphincter, and ileum was defined as 1 cm from the cecum. The animals used to harvest control jejunum and ileum were independent of each other.
2008-10-25 | E-GEOD-11194 | biostudies-arrayexpress
Project description:The aim of the project is to generate a peptidomics map of gut hormone peptides along the gastrointestinal tract, starting with the stomach and including the duodenum, jejunum, ileum, ascending colon, sigmoid colon and rectum. The tissues would be collected after surgery and the peptide fraction extracted and anlysed by nano LC-MS to identify what peptide hormones are present. These data will then be used to compare against the human transcriptome, and also for comparison against equivent peptides from murine intestinal extracts.
2019-02-15 | PXD009788 | Pride
Project description:The aim of the project is to generate a peptidomics map of gut hormone peptides along the gastrointestinal tract, starting with the stomach and including the duodenum, jejunum, ileum, colon and rectum. The tissues would be collected after surgery and the peptide fraction extracted and anlysed by nano LC-MS to identify what peptide hormones are present. These data will then be used to compare against the murine transcriptome, and also for comparison against equivent peptides from human intestinal extracts.
2019-02-15 | PXD009796 | Pride
Project description:Biopsy samples (n=362) were collected from terminal ileum at baseline, 8 weeks after induction (Ustekinumab or placebo), and 44 weeks after maintenance (Ustekinumab 90 mg SC q12w, Ustekinumab 90 mg SC q8w, or placebo) therapies during endoscopy for RNA extraction and microarray analysis from patients with moderate-to-severe CD who participated in stelara CD phase 3 studies (UNITI-2 and IM-UNITI). These patients failed conventional therapies previously and largely naive to anti-TNF therpy. Ileum biopsies (n=26) collected from non-IBD subjects were also analyzed to serve as control. Enrichment of a core microvilli gene set was found to be reduced in UNITI-2 CD samples relative to controls, correlated with microvilli length and endoscopy score, and associated with response to treatment.
2019-03-20 | GSE112366 | GEO
Project description:Background and Aims: Although the zinc finger transcription factor GATA4 has been implicated in regulating jejunal gene expression, the contribution of GATA4 in controlling jejunal physiology has not been addressed. Methods: We generated mice in which the Gata4 gene was specifically deleted in the small intestinal epithelium. Measurements of plasma cholesterol and phospholipids, intestinal absorption of dietary fat and cholesterol, and gene expression were performed on these animals. Results: Mice lacking GATA4 in the intestine displayed a dramatic block in their ability to absorb cholesterol and dietary fat. Comparison of the global gene expression profiles of control jejunum, control ileum, and GATA4 null jejunum by gene array analysis demonstrated that GATA4 null jejunum lost expression of 53% of the jejunal-specific gene set and gained expression of 47% of the set of genes unique to the ileum. These alterations in gene expression included a decrease in mRNAs encoding lipid and cholesterol transporters as well as an increase in mRNAs encoding proteins involved in bile acid absorption. Conclusion: Our data demonstrate that GATA4 is essential for jejunal function including fat and cholesterol absorption and confirm that GATA4 plays a pivotal role in determining jejunal versus ileal identity. Keywords: genetic modification
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Project description:To test the ability of the Automated Spatially Targeted Optical Micro Proteomics (AutoSTOMP) protocol for clinical research. We collected from a patient diagnosed with active EoE (≥15 eosinophils/hpf), according to consensus guidelines, using standard endoscopy procedures, then we try to selectively obtain the proteome from the discrete lgG4+ lesions of the biopsy sections by AutoSTOMP, and try to link the lesion structure with its specially skewed constituents comparing to the rest of the tissue.
2021-08-10 | PXD026819 | Pride
Project description:Skin biopsy specimens of skin lesions were profiled for miRNA expression. In this study, we indentified miRNA species that were differentially expressed in the skin lesions of either the lepromatous or tuberculoid forms of leprosy. One miRNA species, hsa-mir-21, found in the lepromatous lesions was capable of downregulating the vitamin D-dependent antimicrobial pathway.
2011-12-31 | GSE33192 | GEO