Quercetin regulates gene expression in airway basal cells obtained from pateints with chronic obstructive pulmonary diesease
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PROVIDER: PRJNA1063718 | ENA |
REPOSITORIES: ENA
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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
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Project description:BackgroundAirway basal cells (BC) from patients with chronic obstructive pulmonary disease (COPD) regenerate abnormal airway epithelium and this was associated with reduced expression of several genes involved in epithelial repair. Quercetin reduces airway epithelial remodeling and inflammation in COPD models, therefore we examined whether quercetin promotes normal epithelial regeneration from COPD BC by altering gene expression.MethodsCOPD BC treated with DMSO or 1 µM quercetin for three days were cultured at air/liquid interface (ALI) for up to 4 weeks. BC from healthy donors cultured at ALI were used as controls. Polarization of cells was determined at 8 days of ALI. The cell types and IL-8 expression in differentiated cell cultures were quantified by flow cytometry and ELISA respectively. Microarray analysis was conducted on DMSO or 1 µM quercetin-treated COPD BC for 3 days to identify differentially regulated genes (DEG). Bronchial brushings obtained from COPD patients with similar age and disease status treated with either placebo (4 subjects) or 2000 mg/day quercetin (7 subjects) for 6 months were used to confirm the effects of quercetin on gene expression.ResultsCompared to placebo-, quercetin-treated COPD BC showed significantly increased transepithelial resistance, more ciliated cells, fewer goblet cells, and lower IL-8. Quercetin upregulated genes associated with tissue and epithelial development and differentiation in COPD BC. COPD patients treated with quercetin, but not placebo showed increased expression of two developmental genes HOXB2 and ELF3, which were also increased in quercetin-treated COPD BC with FDR < 0.001. Active smokers showed increased mRNA expression of TGF-β (0.067) and IL-8 (22.0), which was reduced by 3.6 and 4.14 fold respectively after quercetin treatment.ConclusionsThese results indicate that quercetin may improve airway epithelial regeneration by increasing the expression of genes involved in epithelial development/differentiation in COPD.Trial registrationThis study was registered at ClinicalTrials.gov on 6-18-2019. The study number is NCT03989271.
| S-EPMC10926630 | biostudies-literature
Project description:BackgroundAirway basal cells from patients with chronic obstructive pulmonary disease (COPD) regenerate abnormal airway epithelium and this was associated with reduced expression of several genes involved in epithelial repair. Quercetin reduces goblet cell metaplasia and the expression of pro-inflammatory cytokines in COPD models. This study assessed whether quercetin improves epithelial regeneration from COPD airway basal cells.MethodsCOPD airway basal cells were treated with DMSO or 1 μM quercetin for three days. The cells were then cultured at air/liquid interface (ALI) for up to 4 weeks. Basal cells from healthy donors cultured at air/liquid interface were used as controls. Polarization of cells was determined at 8 days of ALI. The cell types and IL-8 expression in differentiated cell cultures were quantified by flow cytometry and ELISA. Microarray analysis was conducted on DMSO or quercetin-treated COPD basal cells to identify differentially regulated genes (DEG) and the enriched biological pathways. Bronchial brushings from COPD patients treated with either placebo or quercetin for 6 months were used to confirm the effects of quercetin on gene expression.ResultsCompared to DMSO, quercetin-treated COPD basal cells showed an increase in TER and regenerated the airway epithelium with more ciliated cells, and less goblet cells and IL-8. Comparison of DMSO- and quercetin-treated COPD basal cell transcriptomic profiles indicated that quercetin upregulated genes associated with tissue and epithelial development and differentiation. COPD patients treated with quercetin, but not placebo showed significantly increased expression of two developmental genes HOXB2 and ELF3, which were also increased in quercetin-treated COPD basal cells. Bronchial brushings from active smokers showed significantly increased mRNA expression of TGF-β and IL-8, and it was reduced after quercetin treatment.ConclusionsThese results indicate that quercetin may improve airway epithelial regeneration by increasing the expression of genes involved in epithelial development/differentiation in COPD.Trial registrationThis study was registered at ClinicalTrials.gov on 6-18-2019. The study number is NCT03989271.
| S-EPMC10402257 | biostudies-literature
Project description:Quercetin has been described to have a wide range of beneficial effects in humans, ranging from anti-carcinogenic properties to reduced risk of cardiovascular disease. We tested whether a daily supplementation of quercetin leads to reproducible changes in gene expression profiles of human monocytes. Keywords: individual compound treatment
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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.
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