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Long noncoding RNA (lncRNA) expression profiles of hypertrophic scar fibroblasts treated with glucocorticoids under mechanical stretch environment

ABSTRACT: Long noncoding RNA (lncRNA) expression profiles of hypertrophic scar fibroblasts treated with glucocorticoids under mechanical stretch environment

PROVIDER: PRJNA634904 | ENA |

REPOSITORIES: ENA

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Gene expression of hypertrophic scar fibroblasts treated with glucocorticoids under mechanical stretch environment

Project description:After disruption of the skin, fibroblasts along wound edges are constantly exposed to high levels of stress, resulting in increased collagen synthesis and decreased apoptosis. Emerge evidences shows that, the hypertrophic scars tissue fibrosis phenomena are original from the intrinsic cellular mechanical stretch. Traditional glucocorticoids on hypertrophic scarring have been performed for 30 years, utilizing for their anti-inflammatory, anti-allergenic and immunomodulatory effects and for their well-established, pro-apoptotic effects on hematological malignancies. To explore effects of glucocorticoid triamcinolone acetonide for responses to mechanical stress in hypertrophic scars fibroblasts (HSFB), we performed microarrays to explore the differential gene expression.

2020-05-28 | GSE151240 | GEO

Gene expression of hypertrophic scar fibroblasts treated with glucocorticoids under mechanical stretch environment

Project description:Gene expression of hypertrophic scar fibroblasts treated with glucocorticoids under mechanical stretch environment

| PRJNA635272 | ENA

Long noncoding RNA (lncRNA) expression profiles of hypertrophic scar fibroblasts treated with glucocorticoids under mechanical stretch environment

Project description:After disruption of the skin, fibroblasts along wound edges are constantly exposed to high levels of stress, resulting in increased collagen synthesis and decreased apoptosis. Emerge evidences shows that, the hypertrophic scars tissue fibrosis phenomena are original from the intrinsic cellular mechanical stretch. Traditional glucocorticoids on hypertrophic scarring have been performed for 30 years, utilizing for their anti-inflammatory, anti-allergenic and immunomodulatory effects and for their well-established, pro-apoptotic effects on hematological malignancies. To explore effects of glucocorticoid triamcinolone acetonide (TA) for responses to mechanical stress in hypertrophic scars fibroblasts (HSFB), we performed microarrays to explore long noncoding RNA expression.

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The ion channel Trpc6a regulates the cardiomyocyte regenerative response to mechanical stretch

Project description:Myocardial damage caused for example by cardiac ischemia leads to ventricular volume overload resulting in increased stretch of the remaining myocardium. In adult mammals, these changes trigger an adaptive cardiomyocyte hypertrophic response which, if the damage is extensive, will ultimately lead to pathological hypertrophy and heart failure. Conversely, in response to extensive myocardial damage, cardiomyocytes in the adult zebrafish heart and neonatal mice proliferate and completely regenerate the damaged myocardium. We therefore hypothesized that in adult zebrafish, changes in mechanical loading due to myocardial damage may act as a trigger to induce cardiac regeneration. Based, on this notion we sought to identify mechanosensors which could be involved in detecting changes in mechanical loading and triggering regeneration. Here we show using a combination of knockout animals, RNAseq and in vitro assays that the mechanosensitive ion channel Trpc6a is required by cardiomyocytes for successful cardiac regeneration in adult zebrafish. Furthermore, using a cyclic cell stretch assay, we have determined that Trpc6a induces the expression of components of the AP1 transcription complex in response to mechanical stretch. Our data highlights how changes in mechanical forces due to myocardial damage can be detected by mechanosensors which in turn can trigger cardiac regeneration.

2023-12-20 | E-MTAB-13603 | biostudies-arrayexpress

Epigenome analysis of normal skin and hypertrophic scar samples

Project description:Hypertrophic scarring (HS) is characterized by excessive extracellular matrix deposition, matrix metalloprotein gene activation, and fibroblast invasive growth. However, the methylation level of hypertrophic scarring is poorly understood. Genome wide DNA methylation profiling of normal skin and hypertrophic scar. The Illumina Infinium Methylation EPIC BeadChip (850K) was used to obtain DNA methylation profiles across approximately 853,307 CpGs in liquid based scar samples. Samples included 6 normal skin, and 6 hypertrophic scar.

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Gene Expression in Three Early Human Hypertrophic Scar Samples

Project description:The goal was to obtain expression data from the deep cones in early human hypertrophic scars to be used to confirm expression data obtained in a porcine model. Three samples of early human hypertrophic scar were obtained and processed with the Affymetrix Human GeneChip® Human Genome U133 plus 2.0. Sample demographics were Black 2, White 1; upper extremity 2, neck 1; times since injury 6.7 months and 10.8 months; and patient ages were 19 and 54.

2011-12-31 | E-GEOD-26213 | biostudies-arrayexpress

RNA-seq of human hypertrophic scar fibroblast cell treated with fkbp10 siRNA against untreated controls

Project description:human hypertrophic scar fibroblast cell treated with fkbp10 siRNA and control siRNA for 48 hours

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RNA-seq of human hypertrophic scar fibroblast cell treated with pcolce siRNA against untreated controls

Project description:human hypertrophic scar fibroblast cell treated with pcolce siRNA and control siRNA for 48 hours

2020-08-26 | E-MTAB-9472 | biostudies-arrayexpress

Glucocorticoid promotes fatty acids metabolism in hypertrophic scar tissues and fibroblasts via the microRNA

Project description:Hypertrophic scar (HS) is a skin lesion due to abnormal wound healing after skin injury; histologically, HS is characterized by deposition of excessive amounts of the extracellular matrix and collagen produced by wound healing-induced proliferative fibroblasts. Clinically, HS management includes surgical resection of HS, topical glucocorticoid therapy or drug injections, pressure therapy, fractional carbon dioxide laser therapy, and cryotherapy. In terms of non-surgical therapy, glucocorticoids (like Triamcinolone acetonide, a synthetic corticosteroid medication used topically to treat various skin conditions) was able to effectively inhibit HS formation safely for decades. The effects of glucocorticoids may either be due to its anti-inflammatory, anti-allergenic and immunomodulatory effects or activate fatty acids metabolism by promotion of lipid accumulation in fibroblasts. However, it is no clear why and how glucocorticoids-upregulated fatty acid metabolisms benefit in HS treatment and prevention.And it remains to be defined how altered microRNAs regulated-fatty acid metabolism involved in pathological scars.

2023-02-25 | GSE225646 | GEO

Cyclic mechanical stretch-induced gene expression

Project description:With gene expression profiling it was aimed to identify the differentially expressed genes associated with the regulation of the cytoskeleton to investigate the stretch-induced cell alignment mechanism. A whole genome microarray based analysis of the stretch-induced gene expression changes was done. Gene expression was measured at the beginning of the alignment process showing first reoriented cells after 5 h stretching and at the end after 24 h, where nearly all cells are aligned. Cyclic mechanical stretching of cells results in cellular alignment perpendicular to the stretch direction regulating cellular response. This stress response is assumed to be an adaptation mechanism to reduce extensive stretching but also acts as architectural restructuring changing performance and biomechanics of the tissue. Gene expression profiling of control vs. stretched primary human dermal fibroblasts after 5 h and 24 h demonstrated the regulation of differentially expressed genes associated with metabolism, differentiation and morphology. Primary human dermal fibroblasts from ten donors were cultured on Bioflex culture plates and stretched for 5h and 24 h or left untreated to avoid changes according to cell culturing. Each of the subject provided 4 samples (control/treated and 5hrs/24hrs) resulting in 40 samples total.

2014-06-11 | E-GEOD-58389 | biostudies-arrayexpress

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