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Comparison of human aortic valve interstitial cells (AVICs) exposed to cyclic stretch to static samples

ABSTRACT: AVICs were exposed to cyclic stretch to examine the role of mechanical stimuli on gene expression AVICs cultured on collagen 1 coated Bioflex were exposed to 14% stretch at 1 hz or static conditions using a Flexcell-5000

ORGANISM(S): Homo sapiens

PROVIDER: GSE47687 | GEO | 2015/01/09

SECONDARY ACCESSION(S): PRJNA207296

REPOSITORIES: GEO

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Comparison of human aortic valve interstitial cells (AVICs) exposed to cyclic stretch to static samples

Project description:AVICs were exposed to cyclic stretch to examine the role of mechanical stimuli on gene expression AVICs cultured on collagen 1 coated Bioflex were exposed to 14% stretch at 1 hz or static conditions using a Flexcell-5000 14% stretch was the experimental condition while the static condition was the control

2015-01-09 | E-GEOD-47687 | biostudies-arrayexpress

Stretch responsive miRNAs in human aortic valve interstitial cells

Project description:miRNA-Sequencing was performed on human aortic valve interestitial cells (AVICs) exposed to 14% stretch at 1 hz or static conditions for 24h.

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Stretch responsive miRNAs in human aortic valve interstitial cells

Project description:miRNA-Sequencing was performed on human aortic valve interestitial cells (AVICs) exposed to 14% stretch at 1 hz or static conditions for 24h. Six static control and six samples exposed to cyclic stretch 14% for 24h

2015-01-09 | E-GEOD-49558 | biostudies-arrayexpress

The long non-coding HOTAIR is modulated by cyclic stretch and WNT/beta-CATENIN in human aortic valve cells and is a novel repressor of calcification genes

Project description:Aortic valve calcification is a significant and serious clinical problem for which there are no effective medical treatments. Individuals born with bicuspid aortic valves, 1-2% of the population, are at the highest risk of developing aortic valve calcification. Aortic valve calcification involves increased levels of calcification and inflammatory genes. Bicuspid aortic valve leaflets experience increased strain. The molecular mechanisms involved in the pathogenesis of calcification of BAVs are not well understood, especially the molecular response to mechanical stretch. HOTAIR is a long non-coding RNA (lncRNA) that has been implicated with cancer but has not been studied in cardiac disease. We have found that HOTAIR levels are decreased in BAVs and in human aortic interstitial cells (AVICs) exposed to cyclic stretch. Reducing HOTAIR levels via siRNA in AVICs results in increased expression of calcification genes.

2014-05-02 | E-MTAB-2409 | biostudies-arrayexpress

The role of cardiomyocyte Muscle Ring Finger-1 (MuRF1) in transcriptional responses to cyclic stretch (Wei HL1 str RNA seq oridata 71917)

Project description:We investigated the role of cardiomyocyte MuRF1 in the transcriptional responses to cyclic stretch (15% biaxial stretch at 1 Hz for 60 min) using the HL-1 cell line.

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Changes in B10F10 melanoma cells in response to stretch

Project description:To study the effects induced by mechanical stretch on cancer cells, B16F10 murine melanoma cells were seeded in Flexcell plates and cultured in static or stretch (15% equibiaxial elongation, 15 cycles/min) for 24 hours. Cells were collected, and RNA isolated and sequenced.

2022-02-14 | GSE168499 | GEO

Expression data from static and cyclic stretched porcine aortic heart valves

2010-05-07 | GSE21663 | GEO

Expression data from static and cyclic stretched porcine aortic heart valves

Project description:We explored the hypothesis that Serotonin (5HT) receptor signaling, that can be enhanced with 5HT transporter blockade with Fluoxetine (Fluox), in the aortic valve may vary based upon the biomechanical activity of the aortic valve leaflet. We used Affymetrix microarrays to study gene expression profiling of Porcine Aortic Valves (PAV) incubated under organ culture conditions for 24 hours in either a static state or with 10% cyclic stretch, simulating physiologic leaflet motion. PAV in the bioreactor with or without stretch were exposed to 5HT along or the combination 5HT plus Fluox. Fresh porcine aortic valves were obtained from a local abattoir. The three leaflets were excised from each valve and a rectangular section of tissue 15x10 mm was isolated from the central region of each valve cusp. These samples were randomized and assigned to one of four groups. The experimental groups were: 1) Static conditions with no agents added; 2) Cyclic stretch conditions with no agents added; 3) Static conditions with 5HT plus Fluox added; and 4) Cyclic stretch conditions with 5HT plus Fluox added.

2010-05-27 | E-GEOD-21663 | biostudies-arrayexpress

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.

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Phosphoproteome of cyclic stretch A549 and IMR-90

Project description:Lung cancer is one of the leading causes of death. However, most of the researches were based on the traditional cell-culturing method. Whereas cells of lung are subjected to the mechanical forces periodically while breathing. In the present study, we applied cyclic stretch to stimulate the continuously contracting physical condition. We uncovered the stretching force-induced phosphoproteome in lung cancer cell A549 and fibroblast IMR-90. 2048 and 2604 phosphosites corresponding to 837 and 1008 phosphoproteins were identified in A549 and IMR-90, respectively. Interestingly, cytoskeleton reorganization and mitochondrial localization were enriched in the significantly expressed phosphoproteins in response to cyclic stretch. Indeed, we found this physical stress changed cell alignment thus disrupted mitochondrial dynamics. We proved that mitochondrial fusion is induced by uniaxial stretch in 2 cell lines. This study reveals the molecular mechanism of cyclic stretch and supports that stretching force enhanced cellular rearrangement and mitochondrial fusion in lung cells.

2021-09-08 | PXD012010 | Pride

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