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

ABSTRACT: 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.

ORGANISM(S): Homo sapiens

SUBMITTER: Takahide Kohro

PROVIDER: E-GEOD-32693 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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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.

2013-01-01 | GSE32693 | GEO

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

Genome-wide maps of MEF2C and H3K27ac localization in HUVECs

Project description:MEF2C is one of the substantially expressed transcriptional factors in endothelial cells, but its genomic localization is unknown. This time, we established a new antibody for MEF2C, and performed ChIP-seq to identify MEF2C binding site in whole genome manner. H3K27Ac binding sites were also detected in the same way. We used chromatin immunoprecipitation with deep sequencing (ChIP-seq) of HUVECs treated with or without pitavastatin for 4hours, we identified MEF2C and H3K27Ac binding regions.HUVECs were used within the first 6 passages. For MEF2C studies, HUVECs were cultivated in medium EGM2MV containing pitavastatin at a concentration of 1 ?M, and same concentration of DMSO was used as a control sample. For H3K27ac, HUVECs were starved for 16 hours and harvested without statin treatment.

2013-01-01 | E-GEOD-32644 | biostudies-arrayexpress

Suppression of statin effectiveness by copper and zinc in yeast and human cells

Project description:Lovastatin and other statins inhibit HMG-CoA reductase, which carries out an early step in the sterol biosynthesis pathway. Statins lower cholesterol and are widely prescribed to prevent heart disease, but like many drugs, they can interact with nutritionally acquired metabolites. To probe these interactions, we explored the effect of a diverse library of metabolites on statin effectiveness using a Saccharomyces cerevisiae model. In yeast, treatment with lovastatin results in reduced growth. We combined lovastatin with the library of metabolites and found that copper and zinc ions impaired the ability of the statin to inhibit yeast growth. Using an integrated genomic and metabolomic approach, we found that lovastatin plus metal synergistically upregulated some sterol biosynthesis genes. This altered pattern of gene expression resulted in greater flux through the sterol biosynthesis pathway and an increase in ergosterol levels. Each sterol intermediate level was correlated with expression of the upstream gene. Thus, the ergosterol biosynthetic response induced by statin is enhanced by copper and zinc. In cultured mammalian cells, these metals also rescued statin growth inhibition. Because copper and zinc impair the ability of statin to reduce sterol biosynthesis, dietary intake of these metals could have clinical relevance for statin treatment in humans. There are 23 total samples comprising replicates of combinations of statin (5 ug/mL), CuSO4 (1mM), and ZnSO4 (2mM) treatments. There are three biological replicates. Within each biological replicate set, there are two conditions that were randomly chosen to be duplicated (i.e., technical replicates). An RNA sample consisting of a mix of RNA from all 6 experimental conditions was used as the reference.

2010-10-29 | E-GEOD-25004 | biostudies-arrayexpress

Expression data of HUVEC cells after statin treatment

2013-01-01 | GSE32547 | GEO

Statin therapy inhibits Fatty Acid Synthase via dynamic protein modifications

Project description:Recent discoveries revealed HMG-CoA is a reactive metabolite that can non-enzymatically modify proteins and impact their activity. Therefore, we predicted that inhibition of HMGCR by statins might increase HMG-CoA levels and protein modifications. Upon statin treatment, we observed a strong increase in HMG-CoA levels, and only a single protein was modified. Mass spectrometry revealed fatty acid synthase (FAS) was modified on active site residues and, importantly, the modification is located on non-lysine side-chains.

2022-05-20 | PXD030952 | Pride

Statin induced changes in gene expression in EBV-transformed and native B-cells

Project description:Statin-induced gene expression differences observed in LCLs may be influenced by their transformation, and thus differ from those observed in native B-cells. To assess this possibility, we prepared LCLs and purified B-cells from the same donors, and compared mRNA profiles after 24hr incubation with simvastatin (2M-BM-5M) or sham buffer. We prepared LCLs and purified B-cells from the same donors, and compared mRNA profiles after 24hr incubation with simvastatin (2M-BM-5M) or sham buffer. Genes involved in cholesterol metabolism were similarly regulated between the two cell types under both the statin and sham treated conditions, and the statin-induced changes were significantly correlated.

2013-11-12 | E-GEOD-51444 | biostudies-arrayexpress

Comparative Effects of Statins on Murine Cardiac Gene Expression Profiles in Normal Mice

Project description:Recent clinical data suggest that the efficacy of statin treatment in patients with heart failure varies depending on the drugs administered. Therefore, the present study was undertaken to compare murine cardiac gene expression following treatment with four different statins. Statins directly regulated cardiac gene expression in a drug-specific manner in mice. The influence of each statin on the cardiac mRNA expression of various genes, including several genes that might be involved in the development of cardiac disease, was not a general effect of this class of drugs. Male C57BL/6J mice (n = 20) were treated with or without a statin (pitavastatin calcium, pravastatin sodium, rosuvastatin calcium, or atorvastatin calcium hydrate) (n = 4 in each group) for four weeks. Total RNA was isolated from the left ventricle of each animal. The fragmented and labeled amplified cDNA was hybridized to a GeneChip Mouse Genome 430 2.0 Array (Affymetrix). Data and statistical analysis were performed with GeneSpring GX version 11.0 software (Agilent Technologies).

2013-03-31 | E-GEOD-23101 | biostudies-arrayexpress

Identification of Toll-like receptor 4 interacting partner through immunoprecipitation-based chemical cross-linking proteomics

Project description:Toll-like receptor 4 (TLR-4) is a transmembrane protein. Its activation leads to NF-kB signaling pathway and proinflammatory cytokines’ production that are responsible for activating innate immunity system. Here, we design a co-immunoprecipitation based cross-linking proteomics approach to reveal the TLR-4 interactome upon treatment of lipopolysaccharides and statin drug in HA-TLR-4 transfected HEK293 cells. A total of 712 differentially expressed proteins were identified and quantified in this study. Selected candidate proteins, macrophage myristoylated alanine-rich C kinase substrate, and creatine kinase, exclusively identified in the treatment of statin along with cross-linkers, were further validated by immunoblotting.

2022-10-13 | PXD014661 | Pride

Statin-induced Myopathy

Project description:We performed a genome-wide association study in pooled DNA samples from patients with severe statin myopathy and persistent symptoms post-therapy versus pooled DNAs from an age-adjusted statin-tolerant group. Affymetrix 100K SNP arrays were used according to the manufacturers instructions with two pools of 19 and 20 statin myopathy patients and two pools of 20 statin-tolerant controls.

2010-07-09 | E-GEOD-17574 | biostudies-arrayexpress

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