Bulk RNA sequecning of control and Dimethyloxalylglycine (DMOG) treated Human Primary Pulmonary artery endothelial cells (ATCC: PCS-100-022)
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ABSTRACT:
ORGANISM(S): Homo sapiens
PROVIDER: GSE189504 | GEO | 2022/09/12
REPOSITORIES: GEO
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Project description:RNA sequencing of primary human monocytes cultured with and without hypoxia-mimetic agent DMOG (Dimethyloxalylglycine). Monocytes isolated from PBMCs of 7 healthy donors were cultured with and without DMOG for 24hrs and harvested at 0, 2, 10 or 24hrs for RNA sequencing. DMOG suppresses HIF Prolyl hydroxylase (HIF-PH) activity by acting as a small molecule competitive inhibitor. HIF-PH inhibition leads to increase in endogenous HIF protein levels and mimics aspects of hypoxia. This RNA-seq study allows analysis of transciptome-wide expression pattern changes over time due to DMOG treatment.
2022-04-13 | GSE165998 | GEO
Project description:ATAC sequencing of primary human monocytes cultured with and without hypoxia-mimetic agent DMOG (Dimethyloxalylglycine). Monocytes isolated from PBMCs of 7 healthy donors were cultured with and without DMOG for 24hrs and harvested at 0, 2, 10 or 24hrs for RNA sequencing. DMOG suppresses HIF Prolyl hydroxylase (HIF-PH) activity by acting as a small molecule competitive inhibitor. HIF-PH inhibition leads to increase in endogenous HIF protein levels and mimics aspects of hypoxia. This ATAC-seq study allows analysis of genome-wide changes to chromatin accessibility due to DMOG treatment.
2022-04-13 | GSE165997 | GEO
Project description:Expression data from the hepatic stellate cell line LX-2 after treatment with the prolylhydroxylase inhibitor dimethyloxalylglycine (DMOG) and from the liver sinusoidal endothelial cell line TRP3 after incubation with conditioned medium of DMOG-treated LX-2 Prolyl-hydroxylase inhibitors such as dimethyloxalylglycine (DMOG) stabilize HIF-1α, thereby chemically inducing hypoxia, which also accelerates liver volume increase when given with portal rerouting. We used microarrays to clarify the cellular crosstalk of the different cell types in accelerated liver regeneration by examining the role of hepatic stellate cells (HSC) and liver sinusoidal endothelial cells (LSEC).
2020-03-23 | GSE131168 | GEO
Project description:Bulk RNA sequecning of control and Dimethyloxalylglycine (DMOG) treated Human Primary Pulmonary artery endothelial cells (ATCC: PCS-100-022)
| PRJNA783294 | ENA
Project description:We report the application of standard RNA-sequencing technology for high-throughput profiling of differential gene expression in mammalian cells. This study aims to compare differential gene expression in human monocytes in the absence or presence of HMGB1 and DMOG exposure would mimic hypoxia. Human monocytes (five million cells) from a healthy donor were divided into four groups in triplicate (control, DMOG, HMGB1 or HMGB1_DMOG). RNA isolation, RNA integrity check, library preparation and ~350M raw paired-end reads per lane (Illumina HISeq. 2x150 bp sequencing) were conducted at GENEWIZ, LLC. We find that increased TNF signaling induced by HMGB1 and enhanced when DMOG was present, and reduced IFN signaling in DMOG in unstimulated and HMGB1-stimulated conditions. We conclude that RNA-seq based UP and DOWN regulated genes/pathways characterization would confirm our results and expedite genetic network analyses.
2021-06-03 | GSE162834 | GEO
Project description:The response of cells to hypoxia is characterised by co-ordinated regulation of many genes. Studies of the regulation of the expression of many of these genes by oxygen has implicated a role for the heterodimeric transcription factor hypoxia inducible factor (HIF). The mechanism of oxygen sensing which controls this heterodimeric factor is via oxygen dependent prolyl and asparaginyl hydroxylation by specific 2-oxoglutarate dependent dioxygenases (PHD1, PHD2, PHD3 and FIH-1). Whilst HIF appears to have a major role in hypoxic regulation of gene expression, it is unclear to what extent other transcriptional mechanisms are also involved in the response to hypoxia. The extent to which 2-oxoglutarate dependent dioxygenases are responsible for the oxygen sensing mechanism in HIF-independent hypoxic gene regulation is also unclear. Both the prolyl and asparaginyl hydroxylases can be inhibited by dimethyloxalylglycine (DMOG). Such inhibition can produce activation of the HIF system with enhanced transcription of target genes and might have a role in the therapy of ischaemic disease. We have examined the extent to which the HIF system contributes to the regulation of gene expression by hypoxia, to what extent 2-oxoglutarate dependent dioxygenase inhibitor can mimic the hypoxic response and the nature of the global transcriptional response to hypoxia. We have utilised microarray assays of mRNA abundance to examine the gene expression changes in response to hypoxia and to DMOG. We demonstrate a large number of hypoxically regulated genes, both known and novel, and find a surprisingly high level of mimicry of the hypoxic response by use of the 2-oxoglutarate dependent dioxygenase inhibitor, dimethyloxalylglycine. We have also used microarray analysis of cells treated with small interfering RNA (siRNA) targeting HIF-1alpha and HIF-2alpha to demonstrate the differing contributions of each transcription factor to the transcriptional response to hypoxia. Candidate transcripts were confirmed using an independent microarray platform and real-time PCR. The results emphasise the critical role of the HIF system in the hypoxic response, whilst indicating the dominance of HIF-1alpha and defining genes that only respond to HIF-2alpha. Keywords: Hypoxia response, gene knockdown, chemical treatment
2005-12-01 | GSE3188 | GEO
Project description:The tryptophan degrading enzyme TDO2 is downregulated upon HIF1alpha stabilization by exposure to both hypoxia as well as chemical hypoxia mimetics such as DMOG in glioblastoma cell line A172.
2019-12-29 | GSE138535 | GEO
Project description:Retinopathy of prematurity (ROP) is the most common cause of childhood blindness worldwide and is caused by oxygen therapy necessary to prevent mortality after premature birth. We have previously demonstrated the efficacy of systemic hypoxia inducible factor (HIF) stabilization through HIF prolyl hydroxylase inhibition (HIF PHi) in protecting retinal vasculature from oxygen toxicity in a mouse model of ROP or oxygen induced retinopathy (OIR). We definitively demonstrated that hepatic HIF-1 can be activated to confer this protection using systemic dimethyloxalylglycine (DMOG) to prevent HIF-1α degradation. In this study we compare Roxadustat, a small molecule stabilizer of HIF-1 currently in phase 3 clinical trials for increasing erythropoiesis in adult patients with chronic kidney disease, to DMOG. We demonstrate that Roxadustat induces vascular protection during hyperoxia to induce the coordinated sequential growth of retinal vasculature with a 3-fold reduction in oxygen induced capillary loss (p-=0.001). In order to define the molecular mechanism of protection, we further compared the transcriptome of both liver and retina after systemic treatment with Roxadustat or DMOG. Similar gene expression profiles were identified in liver but very different effects on transcription were found in retinal tissues because Roxadustat, in contrast to DMOG, directly targets retina, confirmed by western blot and by rescue of the hepatic HIF-1 KO, two criteria that DMOG treatment is unable to fulfill. Systems pharmacologic analysis demonstrates that Roxadustat induces typical HIF regulated genes critical to aerobic glycolysis in liver and retinal tissues whereas DMOG, acting through either secreted hepatokines or by influence of systemic DMOG, downregulates cell adhesion/extracellular matrix interaction pathways while increasing expression of histone cluster genes. Stratification of liver transcriptomes to secreted gene products again shows close consensus of hepatic genes induced by both small molecules, and includes upregulation of a plethora of angiogenic proteins such as plasminogen activator inhibitor (PAI-1), erythropoietin (EPO), and orosomucosoid 2 (ORM2). Secondary validation of these transcripts by serum ELISA confirms secretion of EPO and PAI-1 into blood from liver. These findings definitively demonstrate that HIF stabilization can prevent OIR by two pathways: direct retinal HIF stabilization and induction of aerobic glycolysis or indirect, hepatic HIF-1 stabilization and increased serum angiokines. Systems pharmacology analysis therefore explains why intermittent, low dosage of small molecule HIF stabilizers creates a profound protective phenotype, because both pathways can take advantage of cytoprotection induced by the liver and by retina synergistically. These data provide a rationale for considering low dose, intermittent systemic administration of Roxadustat, currently in phase 3 trials in adults with chronic kidney disease, to eradicate ROP in children.
2016-05-03 | GSE74170 | GEO
Project description:With the aim of finding small molecules that stimulate erythropoiesis earlier than erythropoietin and that enhance CFU-E production, we studied the mechanism by which glucocorticoids increase CFU-E formation. Using BFU-E and CFU-E progenitors purified by a new technique, we demonstrate that glucocorticoids stimulate the earliest (BFU-E) progenitors to undergo limited self-renewal, which increases formation of CFU-E cells > 20-fold. Interestingly, glucocorticoids induce expression of genes in BFU-E cells that contain promoter regions highly enriched for hypoxia-induced factor 1 alpha (HIF1a) binding sites. This suggests activation of HIF1a may enhance or replace the effect of glucocorticoids on BFU-E self-renewal. Indeed, HIF1a activation by a prolyl hydroxylase inhibitor (PHI) synergizes with glucocorticoids and enhances production of CFU-Es 170-fold. Since PHIs are able to increase erythroblast production at very low concentrations of glucocorticoids, PHI-induced stimulation of BFU-E progenitors thus represents a conceptually new therapeutic window for treating Epo-resistant anemia. RNA-Seq was performed on enriched populations of BFU-E, CFU-E and Ter119+ as well as BFU-E enriched cells treated with Dex and DMOG
2010-12-21 | E-GEOD-26086 | biostudies-arrayexpress
Project description:HIF-prolyl-hydroxylase inhibitor reduces respiration and induces angiogenic response in retinal pigment epithelial cells (ARPE-19)
| PRJNA1092586 | ENA