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Expression data of HUVEC cells after statin treatment

ABSTRACT: 3-hydroxy-3-methylglutaryl coenzyme A reductase inhibitors, statins, are known to exert endothelial athero-protective effects through the induction of specific transcriptional factors and their downstream target genes besides lowering LDL-cholesterol. However its critical mechanism has not still been elucidated. Here we report the comprehensive change of transcripts induced by pitavastatin. We used repeated microarray analysis of HUVECs treated with pitavastatin for 4-hours, we identified a group of consistently up - or down - regulated genes.

ORGANISM(S): Homo sapiens

PROVIDER: GSE32547 | GEO | 2013/01/01

SECONDARY ACCESSION(S): PRJNA147925

REPOSITORIES: GEO

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Expression data of HUVEC cells after statin treatment

Project description:3-hydroxy-3-methylglutaryl coenzyme A reductase inhibitors, statins, are known to exert endothelial athero-protective effects through the induction of specific transcriptional factors and their downstream target genes besides lowering LDL-cholesterol. However its critical mechanism has not still been elucidated. Here we report the comprehensive change of transcripts induced by pitavastatin. We used repeated microarray analysis of HUVECs treated with pitavastatin for 4-hours, we identified a group of consistently up - or down - regulated genes. HUVECs were used within the first 6 passages. For studies, HUVECs were cultivated in medium EGM2MV containing pitavastatin at a concentration of 1 μM, and same concentration of DMSO was used as a control sample.

2013-01-01 | E-GEOD-32547 | biostudies-arrayexpress

Transcriptomic profiling of differentially expressed mRNA, lncRNA and circRNA in atorvastatin-treated human endothelial cells

Project description:Statins are competitive inhibitors of (3-hydroxy-3-methylglutaryl coenzyme A) HMG-CoA reductase. The primary mechanism of statins is the lowering of serum cholesterol through inhibiting hepatic cholesterol biosynthesis. Statins exert pleiotropic vasoprotective and atheroprotective effects in the vasculature, with its mechanism of action being incompletely understood.To depict the statin-regulated mRNA,long non-coding RNA (lncRNA) and circular RNA (circRNA) in human endothelial cells, we performed transcriptomic profiling of human umbilical vein endothelial cells (HUVECs) with atorvastatin treatment.Differentially expressed mRNA, lncRNA and circRNA may represent novel therapeutic targets against cardiovascular diseases.

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Project description:The statins are a family of inhibitors of the 3-hydroxy-3-methylglutaryl coenzyme A (HMG-CoA) reductase enzyme, which converts acetyl-CoA into mevalonic acid. Since HMG-CoA reductase catalyzes the rate-limiting step in the mevalonate pathway of cholesterol biosynthesis, it was thought that the major clinical benefit of statins was to reduce cholesterol levels in the bloodstream; statins are thus in wide clinical use for the prevention and treatment of cardiovascular disease. Nonetheless, mevalonate is also the precursor of isoprenoid compounds, which are substrates for the post-translational modification of many proteins involved in cell signaling. The blockade of isoprenoid synthesis might explain the pleiotropic effects described for statins in extrahepatic tissues, including inhibition of pathogen infection and anti-inflammatory and immunomodulatory activities. We used microarrays to find differentially expressed genes in spontaneous breast tumors from mice treated with lovastatin (Lov) or vehicle (ethanol) as control. Standard single channel experimental design with biological replicates: gene expression signals from 5 treated tumor samples were compared to 5 non-treated tumor samples using Affymetrix GeneChips (MG430 v2.0).

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Statins-induced changes in gene expression of pancreatic cancer cells with focus on anti-proliferative effects of statins.

Project description:Statins, potent lipid-lowering drugs, were also shown to exert anti-proliferative activity. The aim of this study was to identify the biological pathways affected by changes in gene expression activity after statins treatment and to compare the results with observed anti-proliferative effects. The study was performed in vitro on a pancreatic cancer cell line MIA PaCa-2. The changes in gene expression were measured after 24 h of treatment by the statins (atorvastatin, lovastatin, simvastatin, fluvastatin, cerivastatin, pravastatin, rosuvastatin, and pitavastatin). The statins affected expression of a significant number of genes with mevalonate pathway, cell cycle regulation, and DNA replication being the most affected metabolic/signalling pathways.

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Expression data of statin treated HUVEC cells transfected siRNA KLF2 or KLF4.

Project description:KLF2 and KLF4 are important transcriptional factors in endothelial cells, however their roles in statin treatment has not been elucidated. Here we report the comprehensive change of transcripts of statin treated HUVECs transfected with siRNA KLF2 or KLF4. We used repeated microarray analysis of HUVECs treated with pitavastatin for 4hours. Before statin treatment, cells were transfected with siRNA KLF2 or KLF4. HUVECs were used within the first 6 passages. For studies, HUVECs were cultivated in medium EGM2MV containing pitavastatin at a concentration of 1 micromolar.

2013-01-01 | E-GEOD-32693 | biostudies-arrayexpress

Mouse Intestinal HMGCR complex

Project description:Mice lacking 3-hydroxy-3-methylglutaryl-coenzyme A reductase (Hmgcr) in intestinal villus and crypt epithelial cells were generated using a Villin-Cre transgene. Label free proteome profiling was measure for Wild type and KO mouse.

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Project description:Hantavirus causes two kinds of acute diseases; hemorrhagic fever with renal syndrome (HFRS) and hantavirus pulmonary syndrome (HPS), and it is still a major health concern due to high mortality and lack of effective treatment. Interferon is only effective to inhibit hantavirus infection at a very early stage. Several interferon-stimulated genes (ISGs) have been indicated to inhibit hantavirus infection. The cholesterol 25-hydroxylase (CH25H) has been indicated as an ISG, which encodes an enzyme that catalyzes the production of 25-hydroxycholesterol (25HC). 25HC plays an important role in regulating cholesterol biosynthesis and inhibits multiple enveloped virus infections. Here, we showed that Hantaan virus (HTNV), the prototype hantavirus, induces CH25H in infected cells. Overexpression of CH25H and treatment of its enzymatic product 25HC both inhibit HTNV infection, possibly through lowering 3-hydroxy-3-methyl-glutaryl coenzyme A reductase regulation (HMG-CoA reductase, HMGCR) that inhibit cholesterol synthesis. Additionally, cholesterol lowering drugs, HMGCR-targeting statins process potent hantavirus inhibition effects. Taken together, our results indicate that the 25HC and statins were potential antivirals against hantavirus infection.

2024-06-27 | GSE252127 | GEO

Expression data of statin treated HUVEC cells transfected siRNA KLF2 or KLF4.

2013-01-01 | GSE32693 | GEO

Effect of Lactobacillus brevis 119-2 isolated from turnip “Tsuda kabu” on hepatic cholesterol level in cholesterol-administrated rat

Project description:In previous in vitro study, we reported potential mechanism of cholesterol-lowering effect of Lactobacillus brevis119-2 (119-2) isolated from turnip “Tsuda kabu” is due to incorporation of cholesterol into 119-2 cell. In this study, we analyzed serum cholesterol and hepatic gene expression of Sprague-Dawley (SD) rat fed diet containing cholesterol with or without 119-2 for 2 weeks, to evaluate the cholesterol-lowering effect of 119-2 in vivo. Serum cholesterol of SD rat fed diet with 119-2 significantly decreased compared to SD rat fed diet without 119-2, and both viable and dead 119-2 indicated the effect. The result of hepatic gene analysis using DNA microarray suggested that potential mechanism of the cholesterol-lowering effect of 119-2 in vivo is inhibiting the activity of 3-hydroxy-3-methylglutaryl-CoA reductase by Insig (insulin induced gene) that is endoplasmic reticulum membrane protein, and catabolizing cholesterol to bile acid by Cyp7a1 (cytochrome P450 a1) that is the rate-limiting enzyme in the synthesis of bile acid from cholesterol. In addition, we concluded feeding 119-2 decreased serum low density lipoprotein (LDL) cholesterol by overexpression of Ldlr (LDL receptor gene). On the other hand, feeding Lactobacillus acidophilus ATCC43121 (ATCC) increased high density lipoprotein (HDL) cholesterol by over expression of Abca1 (ATP binding cassette sub-family A member 1 gene) and Angplt3 (Angiopoietin-like 3). These results suggested that 119-2 decrease the risk of atherosclerosis by serum cholesterol-lowering effect and improving effect of fatty liver and the LH (LDL cholesterol / HDL cholesterol) ratio.

2013-04-24 | GSE41734 | GEO

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