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Genome-wide mapping of DNA hydroxymethylation in osteoarthritic chondrocytes

ABSTRACT: Genome-wide mapping of DNA hydroxymethylation in osteoarthritic chondrocytes

PROVIDER: PRJNA270883 | ENA |

REPOSITORIES: ENA

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Genome-wide mapping of DNA hydroxymethylation in osteoarthritic chondrocytes [methylation]

2015-06-30 | E-GEOD-64393 | biostudies-arrayexpress

Genome-wide mapping of DNA hydroxymethylation in osteoarthritic chondrocytes [expression]

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Genome-wide mapping of DNA hydroxymethylation in osteoarthritic chondrocytes [methylation]

2015-06-30 | GSE64393 | GEO

Genome-wide mapping of DNA hydroxymethylation in osteoarthritic chondrocytes [expression]

Project description:Examination of the genome-wide distribution of 5hmC in osteoarthritic chondrocytes compared to normal chondrocytes in order to elucidate the effect on OA-specific gene expression. 5hmC-sequencing was performed and data was compared with microarray gene expression data to identify genes with differential expression between normal and OA chondrocytes that are potentially under epigenetic regulation. Gene expression patterns were examined by comparing the 5 normal samples to the 2 OA samples to assess the changing expression profiles between normal and OA chondrocytes. We analyzed the changes in gene expression in OA; genes with a fold-change ≥ or ≤1.5 or 1.2, with a difference in intensity of >100 and within the lower 90% confidence bound, were selected.

2015-06-30 | E-GEOD-64394 | biostudies-arrayexpress

Genome-wide mapping of DNA hydroxymethylation in osteoarthritic chondrocytes.

Project description: Not available

| S-EPMC4519426 | biostudies-literature

Genome-wide mapping of DNA hydroxymethylation in osteoarthritic chondrocytes

Project description:This SuperSeries is composed of the SubSeries listed below.

2015-06-30 | GSE64395 | GEO

Genome wide-DNA methylation analysis of articular chondrocytes reveals a cluster of osteoarthritic patients (methylation)

Project description:The aim of this study is to identify, for the first time, the genome-wide DNA methylation profiles of human articular chondrocytes from OA and healtly cartilage samples. Genome wide DNA methylation profiling of normal and osteoarthritic samples. The Illumina Infinium 27k Human DNA methylation Beadchip v1.2 was used to obtain DNA methylation profiles across approximately 27,000 CpGs in cartilage knee samples. Samples included 18 healthy controls and 23 OA patients.

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Genome wide-DNA methylation analysis of articular chondrocytes reveals a cluster of osteoarthritic patients (methylation)

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Osteoarthritic chondrocytes undergo a glycolysis-related metabolic switch upon exposure to IL-1β or TNF-α

Project description:Inflammation, which is mainly sustained by pro-inflammatory cytokines such as IL-1β, TNF-α, and IL-6, plays an important role in osteoarthritis progression. However, the therapeutic failures of recent clinical trials evaluating anti-IL-1, anti-TNF, and anti-IL-6 drugs highlight the lack of overall understanding of the effects of these cytokines on chondrocytes. Here, we generated a comprehensive transcriptomic and proteomic dataset of osteoarthritic chondrocytes treated with these cytokines to describe their pro-inflammatory signature and compare it to the transcriptome of non-osteoarthritic chondrocytes. We first identified specific dysregulation of metabolic-related genes in OA chondrocytes. A metabolic shift, toward increased glycolysis at the expense of mitochondrial respiration, was specifically identified and confirmed by Seahorse® assay of osteoarthritic chondrocytes treated with IL-1β or TNF-α. These data show a strong association between inflammation and metabolism, indicating that understanding metabolic dysregulations should be a focus of future investigations for the design of therapies for osteoarthritis.

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Transcriptome-wide analysis of mRNA decay in normal and osteoarthritic human articular chondrocytes

Project description:Human articular chondrocytes were isolated from normal or osteoarthritic tissue. RNA decay was measured across the transcriptome in these cells by microarray analysis following an actinomycin D chase for 0, 1, 3 and 5 hours. Normalisation was conducted by quantile normalising each set of four decay curve points (i.e. 0, 1, 3 and 5 hour samples for a given donor's cells) independently of the other data. This meant that each decay curve is normalised independently of the others.

2014-12-03 | E-MTAB-2723 | biostudies-arrayexpress

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