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Mediators in Crohn’s disease influence the gene expression profiles of mesenchymal progenitor cells differentiated into the osteoblastic lineage.

ABSTRACT: Crohn’s disease (CD) is associated with a higher prevalence of osteoporosis, a complication that is increasingly recognised as a significant cause of morbidity. Its pathogenesis is still controversial, but activity of CD is thought to be one contributing factor.

ORGANISM(S): Homo sapiens

PROVIDER: GSE20941 | GEO | 2012/03/16

SECONDARY ACCESSION(S): PRJNA124421

REPOSITORIES: GEO

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Mediators in Crohn's disease influence the gene expression profiles of mesenchymal progenitor cells differentiated into the osteoblastic lineage.

Project description:Crohn's disease (CD) is associated with a higher prevalence of osteoporosis, a complication that is increasingly recognised as a significant cause of morbidity. Its pathogenesis is still controversial, but activity of CD is thought to be one contributing factor. Two-Color DRLL-IS-Design [Landgrebe et.al 2004: Efficient two-sample designs for microarray experiments with biological replications. In Silico Biology 4] including 12 Arrays, osteoporosis samples from 4 mc patients, control samples from 3 mc patients without osteoporosis

2012-03-16 | E-GEOD-20941 | biostudies-arrayexpress

RNA-seq of nonstenotic and stenotic areas of patients with Crohn’s disease

Project description:Fibrostenotic disease is a common complication in Crohn’s disease (CD). We performed bulk RNA sequencing (n=16) of paired intestinal biopsies taken from nonstenotic and stenotic areas of patients with CD (n=8).

2023-04-26 | E-MTAB-12788 | biostudies-arrayexpress

Fibrosis associated changes detected in the proteome of surface epithelium overlying Crohn’s Disease Strictures

Project description:Background and aims: Intestinal fibrosis is a common complication of Crohn’s disease (CD). It is characterised by an excessive accumulation of fibroblasts differentiating into activated myofibroblasts secreting excessive extracellular matrix. The potential role of the intestinal epithelium in this fibrotic process remains poorly defined. Methods: A total of 113 CD and control subjects were studied. We performed a pilot proteomic study comparing the proteome of surface epithelium isolated by laser capture microdissection in normal and fibrotic zones of resected ileal CD strictures (n=5). Selected proteins were validated by immunohistochemistry (IHC) in colonic and ileal samples of stricturing CD patients (n=44), pure inflammatory CD (n=29) and control subjects (n=40). Functional assays with cell lines cultures and a fibroblast to myofibroblast differentiation model were used to assess the role of the highlighted epithelial proteins in CD fibrosis. Results: Proteomic study revealed an endoplasmic reticulum (ER) stress and unfolded protein response (UPR) markers increase in the epithelium overlying ileal fibrotic strictures, involving Anterior gradient protein 2 homolog (AGR2) and Binding immunoglobulin protein (BiP). This was confirmed by IHC. The ER stress induction in intestinal epithelial cells increased AGR2 as well as BiP expression and led to an extracellular secreted AGR2. A fibroblast to myofibroblast differentiation was obtained with the supernatant of intestinal epithelial cells pre-conditioned by ER stress and with recombinant AGR2. Conclusions: AGR2 and other ER stress markers are increased within the intestinal epithelium overlying fibrotic strictures and might contribute to profibrotic signals involved in CD fibrosis.

2022-04-04 | PXD022214 | Pride

The Gut Microbiota Metabolite Succinate promotes Adipose Tissue Browning in Crohn’s Disease

Project description:In Crohn’s disease (CD), microbe-host interactions are altered, with changes in microbial’s communities and barrier defects leading to translocation of microbes to surrounding adipose tissue (AT). We evaluated the presence of beige AT depots in CD and questioned whether succinate and/or bacterial translocation promotes white-to-beige transition in adipocytes.

2022-09-14 | PXD030520 | Pride

Assessing Cellular and Transcriptional diversity of IIeal Mucosa amongst Treatment Naïve and Treated Crohn’s disease

Project description:Crohn’s disease (CD) is a chronic inflammatory disease of the gastrointestinal tract. We used single cell RNA sequencing (scRNAseq) to define the cellular and transcriptional activity of the mucosa at different stages of disease progression in CD.

2022-10-18 | GSE202052 | GEO

Single cell RNA-sequencing of cells isolated from full-thickness surgically resected tissue from stricturing and non-stricturing segments of the ileum of Crohn's disease patients

Project description:Intestinal fibrosis and stricture formation is an aggressive complication of Crohn’s disease (CD) and there is a clear unmet need for new therapies based on a better understanding of disease mechanisms. Knowledge of fibroblast heterogeneity is important as disease-state specific cell types represent important therapeutic targets. A lack of validated cell markers currently hampers progress.

2023-10-24 | E-MTAB-11792 | biostudies-arrayexpress

Etrolizumab-s fails to control E-Cadherin-dependent co-stimulation of highly stimulated cytotoxic T cells associated with Crohn’s disease

Project description:To interrogate the potential of αEβ7 integrin as a target in Crohn’s disease (CD), we single cell RNA-sequenced T cells from a patient with CD and a non-IBD control

2023-12-28 | GSE252122 | GEO

Expression Profiles of Circular RNAs in colon biopsies from Crohn’s Disease Patients by Microarray Analysis

Project description:To investigate the expression profiles of circRNAs in colon tissues of the patients with Crohn’s Disease(CD) , ulcerative colitis (UC) and healthy controls (HC), we used circRNA microArray analysis form Arraystar to examine the expression of circRNAs in colon tissues of CD,UC and HC.

2019-05-30 | GSE131911 | GEO

Integration of genome-wide DNA methylome and transcriptome of human intestinal fibroblasts reveals novel candidate gene signatures in Crohn’s disease-associated fibrosis

Project description:Tissue fibrosis is a serious complication of Crohn’s disease (CD) as well as of a variety of other complex, chronic pathologies. Understanding the underlying pathophysiology of tissue fibrosis is crucial for the development of tissue-specific prevention and interventional treatment strategies. To identify molecular states specific to fibrotic disease, we employed deep sequencing to define the genome-wide DNA methylome and the whole transcriptome of purified human intestinal fibrotic fibroblasts (HIFs) isolated from the colon of patients with fibrotic CD. Integration of this information, via computational tools, identified candidate molecular interactions that could lead to fibrosis pathology. Our definition of a genome-wide fibrosis-specific DNA methylome provides a new paradigm for understanding mechanisms of pathological gene expression that lead to intestinal fibrosis and may have relevance to fibrogenesis in other organs.

2016-03-22 | GSE67250 | GEO

Dynamics of genome alterations in Crohn’s disease associated colorectal carcinogenesis

Project description:To determine the pattern of copy number alterations that characterizes Crohn’s disease associated colorectal carcinomas (CD-CRCs), we performed array-based comparative genomic hybridization (aCGH) of CD-CRCs. As control group, we used histomorphologically similar sporadic mucinous colorectal adenocarcinomas. To gain insight into the dynamics of copy number alterations in CD associated colorectal tumor development, we additionally analyzed non-dysplastic, i.e., normal or inflamed, mucosa samples and dysplastic lesions from CD-CRC patients by aCGH. This revealed the gain of chromosome arm 5p as a distinctive feature of CD related colorectal carcinogenesis, while the overall pattern of copy number changes in CD-CRC was similar to sporadic mucinous CRC, including gains of chromosomes and chromosome arms 7, 8, 13 and 20q, and losses of 5q, 8p, 17p and 18q.

2018-06-30 | GSE113015 | GEO

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