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Gene-regulatory potential of 1α,25-dihydroxyvitamin D3

ABSTRACT: In this study, we analysed the in-vitro modulation of the transcriptome of human PBMCs isolated from 14 individuals after 24 hours of stimunation with 10 nM 1α,25-dihydroxyvitamin D3 (1,25D)

ORGANISM(S): Homo sapiens

PROVIDER: GSE261699 | GEO | 2024/03/20

REPOSITORIES: GEO

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Analysis of the cellular effect of 1α,25-dihydroxyvitamin D3 on lung NCI-H441 cells

Project description:Low serum levels or deficiency of 1α,25-dihydroxyvitamin D3 (VD3) are associated with a higher mortality in trauma patients with sepsis or acute respiratory distress syndrome, although the molecular mechanisms behind this observation are not yet understood. VD3 is known to stimulate lung maturity, alveolar type II cell differentiation and pulmonary surfactant synthesis. This study aims to expand the knowledge by quantitative characterization of NCI-H441 cells upon VD3 treatment at the proteome level.

2023-05-10 | PXD040622 | Pride

1α,25-Dihydroxyvitamin D3 encapsulated in Nanoparticles Prevents Venous Neointimal Hyperplasia and Stenosis in Porcine Arteriovenous Fistulas

Project description:1α,25-Dihydroxyvitamin D3 encapsulated in Nanoparticles Prevents Venous Neointimal Hyperplasia and Stenosis in Porcine Arteriovenous Fistulas

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Short-term time course of the effects of 1α,25-dihydroxyvitamin D3 treatment on open chromatin regions in THP-1 monocytic leukemia cells

Project description:Open chromatin regions have been shown to associate with the location of transcriptiotal enhancers, i.e., the binding locations of DNA-binding transcription factors. To investigate the effects of short-term treatment by the nuclear hormone 1α,25-dihydroxyvitamin D3 (VD), a specific ligand of the transcription factor vitamin D receptor, on chromatin accessibility, FAIRE-seq was utilized on the chromatin samples from THP-1 monocytic leukemia cells that were treated with 100 nM 1α,25-dihydroxyvitamin D3 for 20, 40, 60, 80, 100 and 120 min, or with vehicle (0.1% (v/v) ethanol) for 20 and 100 min.

2012-10-25 | GSE40075 | GEO

Mapping Variation in Cellular and Transcriptional Response to 1,25-dihydroxyvitamin D3 in Peripheral Blood Mononuclear Cells

2016-07-01 | GSE82023 | GEO

Gene-regulatory potential of 25-hydroxyvitamin D3 and D2

Project description:In this study, we compared the modulation of the transcriptome of human PBMCs by the vitamin D metabolites 25-hydroxyvitamin D3 (25(OH)D3), 25(OH)D2 and 1α,25-dihydroxyvitamin D3 (1,25(OH)2D3).

2022-06-21 | GSE199273 | GEO

Mapping Variation in Cellular and Transcriptional Response to 1,25-dihydroxyvitamin D3 in Peripheral Blood Mononuclear Cells

Project description:This study characterizes the genetic basis of variation in the immunomodulatory effects of the active form of vitamin D, 1,25-dihydroxyvitamin D3 (1,25D). This was done by mapping quantitative traits of 1,25D response both at the cellular and transcriptional level in peripheral blood mononuclear cells (PBMCs). Total RNA extraced from peripheral blood mononuclear cells from 85 healthy individuals of African-African ancestry treated with 1,25D or the vehicle control, ethanol, for 6 hours.

2016-07-01 | E-GEOD-82023 | biostudies-arrayexpress

1,25-dihydroxyvitamin D3 triggers an anti-inflammatory response in brain pericyte

Project description:Background: Epidemiology and experimental studies suggest 1,25-dihydroxyvitamin D3 plays a neuroprotective role in neurodegenerative diseases including Alzheimer's disease. Most of the experimental data on the genes regulated by this hormone in brain cells have been obtained with neuron and glial cells. Emerging evidence demonstrates pericyte plays a critical role in brain function that encompasses its classical function in the control and maintenance of the blood brain barrier. However, the gene response of brain pericyte to 1,25D remains to be investigated. Methods: The transcriptomic response of human brain pericytes to 1,25-dihydroxyvitamin D3 was analyzed. Results were confirmed by RT-qPCR for the genes of interest. Results: We demonstrate that human brain pericyte in culture responds to 1,25-dihydroxyvitamin D3 by regulating genes involved in the control of neuro-inflammation. We also showed that pericytes respond to the pro-inflammatory cytokines TNF-alpha and Interferon gamma by inducing the expression of the gene involved in the synthesis of 1,25-dihydroxyvitamin D3 named CYP27B1. Conclusion: Taken together these results suggest that neuro-inflammation could trigger the synthesis of 1,25-dihydroxyvitamin D3 by brain pericytes, which will in turn respond to the hormone by a global anti-inflammatory response.

2017-01-01 | GSE54765 | GEO

Comparative gene expression profile of 1,25-dihydroxyvitamin D3-treated human monocyte-derived dendritic cells

Project description:We have carried out global gene expression analysis to clarify the interrelationship between 1,25-dihydroxyvitamin D3 and differentiation-driven gene expression patterns in developing human monocyte-derived dendritic cells. Monocytes were treated with 10 nM 1,25-dihydroxyvitamin D3 or vehicle 14 hours after plating for 12 hours or 5 days. Monocytes, differentiating dendritic cells (+/-1,25-dihydroxyvitamin D3 for 12 hours) and immature dendritic cells (+/-1,25-dihydroxyvitamin D3 for 5 days) were harvested. This design allows one to identify genes regulated by differentiation and/or 1,25-dihydroxyvitamin D3 in human monocyte-derived dendritic cells.

2009-02-15 | GSE13762 | GEO

1α,25-Dihydroxyvitamin D3 Regulates Packaging of microRNAs within Extracellular Matrix Vesicles and Their Release in the Matrix

Project description:Growth plate chondrocytes are regulated by numerous factors and hormones as they mature during endochondral bone formation. Chondrocytes in the growth plate’s growth zone (GC cells) produce and export matrix vesicles (MVs) under the regulation of 1α,25-dihydroxyvitamin D3 [1α,25(OH)2D3]. 1α,25(OH)2D3 secreted by the cells acts on the MV membrane, releasing its contents. This study examined the regulatory role 1α,25(OH)2D3 has over the production and packaging of microRNA into MVs by GC cells and the ability to release microRNA from MVs once produced. We treated GC cells with 1α,25(OH)2D3 and then sequenced the microRNA in the cells and MVs. We also treated MVs with 1α,25(OH)2D3 and determined if the microRNA was released. To assess whether MVs can act directly with chondrocytes and if this is regulated by 1α,25(OH)2D3, we stained MVs with a membrane dye and treated GC cells with them. 1α,25(OH)2D3 regulated the production and packaging of microRNA into matrix vesicles. MVs did not release microRNA when treated with 1α,25(OH)2D3, indicating a heterogeneous MV population or a protective factor. Stained MVs were endocytosed by GC cells and this was increased with 1α,25(OH)2D3 treatment. This study adds new regulatory roles for 1α,25(OH)2D3 with respect to packaging and transport of MV microRNAs.

2021-12-06 | GSE190020 | GEO

Microarray analysis of human monocytic THP-1 cell treated with 1α,25-dihydroxyvitamin D3 or Trichostatin A and the combination of both

Project description:The nuclear hormone 1α,25-dihydroxyvitamin D3 (1α,25(OH)2D3) regulates its target genes via activation of the transcription factor vitamin D receptor (VDR) far more specifically than the chromatin modifier trichostatin A (TsA) via its inhibitory action on histone deacetylases. We selected the thrombomodulin gene locus with its complex pattern of three 1α,25(OH)2D3 target genes, five VDR binding sites and multiple histone acetylation and open chromatin regions as an example to investigate together with a number of reference genes, the primary transcriptional responses to 1α,25(OH)2D3 and TsA. Transcriptome-wide, 18.4% of all expressed genes are either up- or down-regulated already after a 90 min TsA treatment; their response pattern to 1α,25(OH)2D3 and TsA sorts them into at least six classes. TsA stimulates a far higher number of genes than 1α,25(OH)2D3 and dominates the outcome of combined treatments. However, 200 TsA target genes can be modulated by 1α,25(OH)2D3 and more than 1000 genes respond only when treated with both compounds. The genomic view on the genes suggests that the degree of acetylation at transcription start sites and VDR binding regions may determine the effect of TsA on mRNA expression and its interference with 1α,25(OH)2D3. Our findings may have implications on dual therapies using chromatin modifiers and nuclear receptor ligands.

2012-10-25 | GSE36323 | GEO

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