Similar Datasets
Project description:Dendritic cells (DCs) are the most potent antigen-presenting cells that play an important role in the crosstalk between the innate and the adaptive immune response. We identified quercetin exposure as an effective strategy to suppress DCs inflammatory response induced by LPS. In this study, using NGS analysis, we examined the effect of quercetin on miRNAs expression in DCs. We defined a signature of 113 miRNAs differentially regulated in LPS-stimulated DCs after quercetin exposure. Among them, we observed an upregulation of miR-369-3p that potentially regulated C/EBP-beta. We functionally demonstrate that the loss of function of miR-369-3p in LPS-stimulated DCs during quercetin exposure led to an increase of C/EBP-beta and its downstream targets TNFα and IL6. Conversely, we showed that the ectopic induction of miR-369-3p even without quercetin suppresses the inflammatory response of LPS reducing C/EBP-beta, TNFα and IL6 production. In vivo, oral administration of quercetin induces miR-369-3p expression. These data demonstrate that a key mediator of immunosuppressive effect of quercetin is miR-369-3p. These findings could have potentially therapeutic implications since the induction of miR-369-3p expression may have anti-inflammatory effect.
2019-12-31 | GSE112327 | GEO
Project description:We showed that diets containing 0.1% or 0.5% quercetin lowered the STZ-induced increase in blood glucose levels and improved plasma insulin levels. A cluster analysis of the hepatic gene expressions showed that 0.5% quercetin diet suppressed STZ-induced alteration of gene expression. Gene set enrichment analysis (GSEA) and quantitative RT-PCR analysis showed that the quercetin diets had their greatest suppressive effect on the STZ-induced elevation of expression of cyclin dependent kinase inhibitor p21(WAF1/Cip1) (Cdkn1a). In this experiment, we determined the effect of quercetin on healthy control BALB/c mice that were fed the AIN93G diet containing 0, 0.1, 0.5 or 1% quercetin for 2 weeks. GSEA and one-way ANOVA did not detect any significant changes in hepatic gene expression in normal mice as a result of a quercetin diet. Using a linear modeling approach and the empirical Bayes statistics, we found that Ubc were significantly reduced by both the 0.5% and 1% quercetin.
2012-05-30 | GSE38136 | GEO
Project description:We report the use of transcriptome sequencing in the intervention of luteolin or quercetin in adipogenesis. We constructed the adipogenic differentiation model of mouse embryonic fibroblasts and obtained the differential genes of luteolin or quercetin regulating adipocyte differentiation by transcriptomic sequencing. We identified 2085 differentially expressed lipogenesis response genes, 181 luteolin response genes and 574 quercetin response genes. This study provides a framework for the network regulation mechanism of luteolin or quercetin inhibiting preadipocyte differentiation.
2023-12-01 | GSE219241 | GEO
Project description:This SuperSeries is composed of the following subset Series: GSE4256: Colon transcriptional response to quercetin in WT and POR-null mice; GSE4257: Ileum transcriptional response to quercetin in WT and POR-null mice; GSE4258: Jejunum transcriptional response to quercetin in WT and POR-null mice; GSE4259: Liver transcriptional response to quercetin in WT and POR-null mice Experiment Overall Design: Refer to individual Series
2007-11-06 | E-GEOD-4262 | biostudies-arrayexpress
Project description:Both the 0.05% and 1% querceitn diets did not significantly affect the body weight, fat accumulation, and blood components. However, 0.05% quercetin significantly increased the glutathione/oxidized glutathione ratio in the liver. Moreover, the 1% quercetin diet reduced the lipid peroxidation markers 8-isoprostane in plasma and malondialdehyde in the liver, epididymal adipose tissues, and small intestine. Although comprehensive gene expression analysis dot not detect the genes with significantly different expression levels among the groups of mice, RT-PCR analysis showed that the 1% quercetin diet significantly induced the expression of the antioxidant enzymes Gpx1, Cat, and Sod1 in the liver and Gpx1 and Cat in the epididymal adipose tissues. The transcription factor nuclear factor E2-related factor 2 (Nrf2) was slightly induced in the nuclear fraction of the livers of mice fed the 1% quercetin diet. Quercetin may induce antioxidant enzymes by directly or indirectly activating the Nrf2 pathway in the liver. Five-week-old male mice were fed a AIN-93G diet containing 0% (Control), 0.05% (0.05% quercetin diet), or 1% quercertin (1% quercetin diet) for 20 weeks.
2015-07-24 | E-GEOD-62805 | biostudies-arrayexpress
Project description:Quercetin has been shown to act as an anti-carcinogen in experimental colorectal cancer (CRC). The aim of the present study was to characterise transcriptome and proteome changes occurring in the distal colon mucosa of rats supplemented with 10 g quercetin/kg diet for 11 weeks. Transcriptome data analysed with Gene Set Enrichment Analysis showed that quercetin significantly downregulated the potentially oncogenic mitogen-activated protein kinase (Mapk) pathway. In addition, quercetin enhanced expression of tumor suppressor genes, including Pten, Tp53 and Msh2, and of cell cycle inhibitors, including Mutyh. Furthermore, dietary quercetin enhanced genes involved in phase I and II metabolism, including Fmo5, Ephx1, Ephx2 and Gpx2. Quercetin increased PPARα target genes, and concomitantly enhanced expression genes in volved in of mitochondrial fatty acid degradation. Proteomics performed in the same samples revealed 33 affected proteins, of which 4 glycolysis enzymes and 3 heatshock proteins were decreased. A proteome-transcriptome comparison showed a low correlation, but both pointed out towards altered energy metabolism. In conclusion, transcriptomics combined with proteomics showed that dietary quercetin evoked changes contrary to those found in colorectal carcinogenesis. These tumor-protective mechanisms were associated with a shift in energy production pathways, pointing at decreased glycolysis in the cytoplasm towards increased fatty acid degradation in the mitochondria. Experiment Overall Design: After an 11-week diet, rats fed quercetin or the control diet were sacrificed and fold changes in gene expression were detemined as quercetin (n=4) vs. control (n=4)
2008-06-15 | E-GEOD-7479 | biostudies-arrayexpress
Project description:Quercetin is a food component that may ameliorate the diabetic symptoms. We examined hepatic gene expression of BALB/c mice with streptozotocin (STZ)-induced diabetes to elucidate the mechanism of the protective effect of dietary quercetin on diabetes-associated liver injury. We fed STZ-induced diabetic mice with diets containing 0.1% or 0.5% quercetin for 2 weeks and compared the patterns of hepatic gene expression in these groups of mice using a DNA microarray. Diets containing 0.1% or 0.5% quercetin lowered the STZ-induced increase in blood glucose levels and improved plasma insulin levels. A cluster analysis of the hepatic gene expressions showed that 0.5% quercetin diet suppressed STZ-induced alteration of gene expression. Gene set enrichment analysis (GSEA) and quantitative RT-PCR analysis showed that the quercetin diets had their greatest suppressive effect on the STZ-induced elevation of expression of cyclin dependent kinase inhibitor p21(WAF1/Cip1) (Cdkn1a).
2012-05-23 | GSE38067 | GEO
Project description:Differential gene expression in mice liver after Quercetin administration. Gene expression from control mice were compared with Quercetin treated mice at different dose level
2010-08-11 | GSE23523 | GEO
Project description:Quercetin has been shown to act as an anti-carcinogen in experimental colorectal cancer (CRC). The aim of the present study was to characterise transcriptome and proteome changes occurring in the distal colon mucosa of rats supplemented with 10 g quercetin/kg diet for 11 weeks. Transcriptome data analysed with Gene Set Enrichment Analysis showed that quercetin significantly downregulated the potentially oncogenic mitogen-activated protein kinase (Mapk) pathway. In addition, quercetin enhanced expression of tumor suppressor genes, including Pten, Tp53 and Msh2, and of cell cycle inhibitors, including Mutyh. Furthermore, dietary quercetin enhanced genes involved in phase I and II metabolism, including Fmo5, Ephx1, Ephx2 and Gpx2. Quercetin increased PPARα target genes, and concomitantly enhanced expression genes in volved in of mitochondrial fatty acid degradation. Proteomics performed in the same samples revealed 33 affected proteins, of which 4 glycolysis enzymes and 3 heatshock proteins were decreased. A proteome-transcriptome comparison showed a low correlation, but both pointed out towards altered energy metabolism. In conclusion, transcriptomics combined with proteomics showed that dietary quercetin evoked changes contrary to those found in colorectal carcinogenesis. These tumor-protective mechanisms were associated with a shift in energy production pathways, pointing at decreased glycolysis in the cytoplasm towards increased fatty acid degradation in the mitochondria. Keywords: Transscriptomics, proteomics, quercetin-exposed and control rats
2008-01-01 | GSE7479 | GEO
Project description:To systemically evaluate the comprehensive alterations under the supplements of quercetin and/or resveratrol in high fat diet (HFD) fed mice, we have employed whole genome microarray expression profiling as a discovery platform to identify genes that differentially altered by different treatments. Gene expression profiles were significantly altered by long term HFD feeding. However, quercetin, resveratrol and their combination could effectively attenuate this alteration. Especially, combination use of quercetin and resveratrol showed more signifcant benefits on the changes of genes, involved in metabolic disorders, induced by HFD, which revealed a synergistic effect of quercetin and resveratrol supplementation in high fat diet fed mice.
2015-05-30 | GSE38325 | GEO