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Epigenetic profiling of Juvenile Idiopathic Arthritits (JIA) patients

ABSTRACT: With H3K27ac chromatin immunoprecipitation we identified a disease-specific, inflammation-associated, (super-)enhancer signature in JIA patient synovial fluid-derived CD4+ memory/effector T cells. This signature consists of unique pathogenesis-associated epigenetic changes which extend beyond general T cell activation-induced alterations, indicating that disease-specific (super-)enhancers contribute to JIA pathogenesis. In addition, our analysis shows that there is a profound enrichment of JIA-related SNPs in (super-)enhancers in JIA patients compared to controls, illustrating the importance of these non-coding regions for disease pathogenesis.

ORGANISM(S): Homo sapiens

PROVIDER: GSE71596 | GEO | 2015/09/15

SECONDARY ACCESSION(S): PRJNA291598

REPOSITORIES: GEO

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Epigenetic profiling of Juvenile Idiopathic Arthritits (JIA) patients

Project description:With H3K27ac chromatin immunoprecipitation we identified a disease-specific, inflammation-associated, (super-)enhancer signature in JIA patient synovial fluid-derived CD4+ memory/effector T cells. This signature consists of unique pathogenesis-associated epigenetic changes which extend beyond general T cell activation-induced alterations, indicating that disease-specific (super-)enhancers contribute to JIA pathogenesis. In addition, our analysis shows that there is a profound enrichment of JIA-related SNPs in (super-)enhancers in JIA patients compared to controls, illustrating the importance of these non-coding regions for disease pathogenesis. H3K27ac ChIP-sequencing of CD4+ memory/effector T cells derived from peripheral blood (PB) from healthy controls (HC) and PB or synovial fluid (SF) from JIA patients.

2015-09-15 | E-GEOD-71596 | biostudies-arrayexpress

RNA-sequencing of cells derived from the site of inflammation of Juvenile Idiopathic Arthritis patients

Project description:Through RNA sequencing of CD4+ Tmemory/effector cells derived from the synovium of JIA patients and healthy controls, we analyzed the JIA gene expression signature. Treatment of autoinflammatory site-derived patient T cells with the BET-inhibitor JQ1 inhibited immune-related super-enhancers and preferentially reduced disease-associated gene expression, including cytokine-related processes. RNA-sequencing of CD4+ memory/effector T cells derived from Healthy Controls (HC) and JIA patients upon JQ1 treatment.

2015-09-15 | E-GEOD-71595 | biostudies-arrayexpress

Gene expression predictors of extension in oligoarticular juvenile idiopathic arthritis (JIA)

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RNA-sequencing of cells derived from the site of inflammation of Juvenile Idiopathic Arthritis patients

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Gene expression predictors of extension in oligoarticular juvenile idiopathic arthritis (JIA)

Project description:Children with oligoarticular JIA (arthritis in 4 or fewer joints) can either continue to have this mild form of arthritis (persistent oligoarticular JIA) or extend to a more sever form involving more than 4 joints (extended oligoarticular JIA) Synovial fluid mononuclear cell RNA was prepared from 21 recently diagnosed pre-treatment patients and grouped according to whether the patient had extended or persisted at one year after diagnosis Each sample was hybridized to Affymetrix HGU133plus2 microarrays. The mean for each probeset was compared between groups in order to find differentially expressed genes whose expression might predict outcome in a prospective study

2009-03-04 | E-GEOD-15083 | biostudies-arrayexpress

CD4+ T Cells Gene Expression-Based Biomarkers in Juvenile Idiopathic Arthritis (JIA)

Project description:Aim: To discovery biomarkers in JIA base on gene expression from RNA sequencing on CD4+ T Cells Method: Paired-end Ilumina sequencing to capture gene expression of CD4+ T cells from JIA individuals with active disease and patients in clinical remission on medication.

2016-06-18 | GSE83415 | GEO

Gene Expression Profiles Distinguish Children with Inactive Polyarticular Juvenile Idiopathic Arthritis (JIA) with a Predilection to Flare

Project description:Gene expression profiles were obtained from 17 children with rheumatoid factor negative (RF-) polyarticular juvenile idiopathic arthritis (JIA). The disease was inactive in all patients at visit 1. Thee disease remained inactive at visit 2 for 9 patients, while the other 8 patients were experiencing a disease flare at visit 2. The goal of the study was to better understand the underlying molecular biology of flares in JIA Total RNA was obtained from PBMC at two different times in the course of disease

2013-12-14 | GSE26112 | GEO

Peripheral Blood Mononuclear Cells (PBMC) Gene Expression-Based Biomarkers in Juvenile Idiopathic Arthritis (JIA)

Project description:Aim: To discovery biomarkers in JIA base on gene expression from RNA sequencing on PBMC Method: Paired-end Ilumina sequencing to capture gene expression of PBMC from JIA individuals and healthy controls Results:sample heterogeneity makes RNA sequencing on PBMC unsuitable as a first-step method for screening biomarker candidates in JIA

2016-04-08 | GSE79970 | GEO

Gene Expression Profiles Distinguish Children with Inactive Polyarticular Juvenile Idiopathic Arthritis (JIA) with a Predilection to Flare

2013-12-14 | E-GEOD-26112 | biostudies-arrayexpress

Juvenile idiopathic arthritis: peripheral blood cells

Project description:Systemic-onset juvenile idiopathic arthritis (soJIA) is a rheumatic disease in childhood characterized by systemic symptoms and a relatively poor prognosis. The peripheral leukocytes are thought to play the pathological role of soJIA although the exact cause is still obscure. In this study, we aimed to clarify the cellular functional abnormality in those cells. Here, we analyzed the gene expression profile in peripheral leukocytes from 51 patients with soJIA, 6 patients with poly-articular type JIA (polyJIA) and 8 healthy children utilizing DNA microarrays. A total of 3,491 genes, including genes related to immune reponse and metabolism, were differentially expressed in patients with soJIA compared to healthy individuals. The result provides insight into the pathogenesis of soJIA. Keywords: disease state analysis Total RNA was extracted from peripheral leukocytes from 51 soJIA patients, 6 poly-articular type JIA patients, and 8 healthy children. The gene expression profile was analyzed with DNA microarrays.

2010-05-26 | E-GEOD-8361 | biostudies-arrayexpress

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