Post-transcriptional gene regulation following exposure of human articular chondrocytes to hyperosmotic conditions
Ontology highlight
ABSTRACT:
ORGANISM(S): Homo sapiens
SUBMITTER: Simon Tew
PROVIDER: E-MEXP-3129 | biostudies-arrayexpress |
REPOSITORIES: biostudies-arrayexpress
Similar Datasets
Project description:miRNA analysis of human articular chondrocytes cultured under 380mOsm or 550mOSm conditions for 5 hours.
2011-06-01 | E-MTAB-654 | biostudies-arrayexpress
Project description:For the detection of tiRNAs accumulated in Cyt c-IP vs tiRNAs in total cell lysates during hyperosmotic stress in the presence of angiogenin Total cell lysates from mouse embryonic fibroblasts treated with angiogenin under hyperosmotic stress. Lysates split into two parts: one part serveed as the total RNA, the other part served as Cyt c-IP fraction. Small RNAs were enriched from both parts and went through deep sequencing followed by bioinformatic analysis.
2014-05-09 | E-GEOD-57435 | biostudies-arrayexpress
Project description:We hypothesized that altered extracellular osmolality per se could affect the transcriptome of the kidney inner medullary collecting duct (IMCD) cells, and hence it might change renal tubular function. The data sets of transcriptomics were incorporated into the "omic" data sets of metabolomics. Primary cultured IMCD cells of rat kidney were grown in hyperosmolar culture medium (640 mOsm/KgH2O) for 4 d, and then the cells were cultured in the medium with either reduced (300 mOsm/KgH2O) or the same osmolality for 1 or 2 d more. Osmolality stress response. Total RNA from IMCD cells exposed to 300 or 640 mOsm/KgH2O for 24 h (n=3 in each group, 24 h-300 and 24 h-640) or for 48 h (n=3 in each group, 48 h-300 and 48 h-640) after a 4-day-culture in culture media (640 mOsm/KgH2O) were subjected to transcriptome analysis (Affymetrix GeneChip® Rat Gene 1.0 ST array containing 29,215 gene-level probe sets) to profile the gene expression at the mRNA level.
2012-02-09 | E-GEOD-35598 | biostudies-arrayexpress
Project description:Purpose: To perform pathway analysis of MDCK I treated with hyperosmolality and to investigate how hyperosmolality affects the expression of membrane transporters. Method: MDCK I cells were treated for 24 h with medium supplemented with 200 mOsm raffinose, NaCl or urea (total of 500 mOsm). The control was regular medium (300 mOsm). RNA was isolated from 12 replicates from each condition and a cDNA library was prepared using TruSeq RNA Library Preparation Kit v2 from Illumina following the manufacturer's protocol. The sequencing was done with a HiSeq with single read and a length of 51. The alignment was done with Hisat 2, the count with FeatureCount and the statistical analysis with DESeq2. Results: The pathways the cell cycle, the cytokine-cytokine receptor interaction pathway, and the chemokine-signaling pathway were significantly activated in MDCK I cells after treatment of 200 mOsm raffinose or NaCl (total: 500 mOsm), and not 200 mOsm urea, for 24 hours. Several membrane transporters were regulated by hyperosmolality. Conclusion: Hyperosmolality has an inflammatory-like response in MDCK I cells and it also affects the expression of several membrane transporters.
2018-10-31 | GSE110301 | GEO
Project description:Oral streptococci metabolize carbohydrate to produce organic acids, not only decrease the environmental pH, but also increase osmolality of dental plaque fluid due to tooth demineralization and consequent calcium and phosphate accumulation. Thus, to persevere in the dental plaque, acidogenic bacteria should evolve sophisticated molecular machineries to counter the detrimental effect of elevated osmolality. This study was aimed to obtain a global view on strategies taken by streptococcus mutans to deal with physiologically relevant elevated osmolality, and preserves within a cariogenic dental plaque. We investigated phenotypic change of S. mutans biofilm upon sub-lethal level of hyperosmotic challenge. We found that hyperosmotic condition was able to initiate S. mutans biofilm dispersal by reducing both microbial content and extracellular polysaccharides matrix. We then used DNA microarray with qPCR validation to systemically investigate the underlying molecular machinery of this bacteria in response to hyperosmotic stimuli. Among those identified 50 differentially regulated genes, down-regulation of gtfB and comC were believed to be responsible for the observed biofilm dispersal. Further analysis of microarray data showed significant up-regulation of genes and pathways involved in carbohydrates metabolism. Specific genes involved in heat shock response and acid tolerance were also upregulated, indicating potential cross-talk between hyperosmotic and other environmental stress. Based on the data obtained in this study, we believe that although hyperosmotic condition may induce significant stress response on S. mutans, this cariogenic bacterium has evolved sophisticated molecular machineries to counter those elicited detrimental effects. In the meantime, it will take full advantage of these environmental stimuli to better fit the fluctuating environments within oral cavity, and thus emerge as numeric-predominant bacteria under cariogenic conditions. A six-chip study using total RNA recovered from mid-logarithmic phase of S. mutans UA159 from three separate cultures of strains submitted for 15 minutes to hyperosmotic stimuli (0.4M NaCl) and three separate cultures of strains kept under no stress condition.
2013-08-31 | E-GEOD-47170 | biostudies-arrayexpress
Project description:“Dry eye” is a multi-factorial inflammatory disease affecting the ocular surface. Tear hyperosmolarity in dry eye contributes to inflammation and cell damage. Recent research efforts on dry eye have been directed towards biomarker discovery for diagnosis, response to treatment and disease mechanisms. This study employed a spontaneously immortalized normal human conjunctival cell line, IOBA-NHC as a model to investigate hyperosmotic stress-induced changes of metabolites and proteins. Global and targeted metabonomic analyses, as well as proteomic analysis were performed on IOBA-NHC cells incubated in serum-free media at 280 mOsm (control), 380 mOsm and 480 mOsm for 24 h. Twenty-one metabolites and seventy-six iTRAQ-identified proteins showed significant changes under at least one hyperosmotic stress treatment as compared to controls. SWATH-based proteomic analysis further confirmed the involvement of inflammatory pathways such as prostaglandin 2 synthesis in IOBA-NHC cells under hyperosmotic stress. This study is the first to identify glycerophosphocholine synthesis and O-linked β-N-acetylglucosamine glycosylation as key activated pathways in ocular surface cells under hyperosmotic stress. These findings extend the current knowledge in metabolite markers of dry eye and provide potential therapeutic targets for its treatment.
2015-08-17 | PXD002661 | Pride
Project description:We have taken S49 Neo cells (an immature murine T-cell line) through repeated exposures of 500 mOsm Mannitol for 4 hours, killing over 90% of the cells, and then allowed them to recover. After 25 rounds of Mannitol exposure, we observed that these cells now have the ability to volume regulate upon an acute exposure to an osmotic stress, an ability not observed in the parental cell line. Interestingly, we found that these repeated Mannitol treated cells to be resistant to glucocorticoid-induced apoptosis, whereas the parental cell line is highly sensitive to glucocorticoid-induced cell death.
2015-12-21 | GSE62531 | GEO
Project description:We have taken S49 Neo cells (an immature murine T-cell line) through repeated exposures of 500 mOsm Mannitol for 4 hours, killing over 90% of the cells, and then allowed them to recover. After 25 rounds of Mannitol exposure, we observed that these cells now have the ability to volume regulate upon an acute exposure to an osmotic stress, an ability not observed in the parental cell line. Interestingly, we found that these repeated Mannitol treated cells to be resistant to glucocorticoid-induced apoptosis, whereas the parental cell line is highly sensitive to glucocorticoid-induced cell death. The RNA was prepared from cultured cells (~1x106 cells/ml) of the parental cell line S49 Neo and the Mannitol Recovered cell line MR 4-25 using the Qiagen RNeasy mini-kit and including DNase treatment. Three replicates were used for each cell line.
2015-12-21 | E-GEOD-62531 | biostudies-arrayexpress
Project description:The aim of this study was threefold: Firstly, to carry out microarray hybridisations using human AC and NP cells to identify NP and AC specific markers. Secondly, to further investigate their ability to characterise adult derived stem cells differentiating towards an NP phenotype using an in vitro differentiation system and thirdly, in their application to compare the suitability of BMSC and ADRCs as a stem cell source for tissue engineering of the IVD. Using microarray technology we have identified several novel human AC and NP markers and have demonstrated that these markers are capable of identifying the differentiation of adult derived stem cells towards an NP rather than an AC phenotype. In addition these markers suggest that ADRCs provide a more suitable cell source for tissue engineering of the intervertebral disc.
2010-12-01 | E-MEXP-2488 | biostudies-arrayexpress
Project description:To identify mediators of the osmotic stress response in Mycobacterium tuberculosis (Mtb), we performed transcriptional profiling of WT CDC1551 following treatment with 140 mM NaCl for 1 hr relative to an untreated control. 140 mM NaCl was chosen to reflect the approximate osmolarity of human plasma (i.e., 280 mOsm/L), which may be relevant during the course of infection. CDC1551 was treated with 140 mM NaCl for 1 h and compared to the same strain treated with 0 mM NaCl for 0 h. 4 biological replicates, independently grown and harvested. One replicate per array.
2013-11-15 | E-GEOD-50159 | biostudies-arrayexpress