Ontology highlight
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PROVIDER: PRJNA1192045 | ENA |
REPOSITORIES: ENA
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Project description:Oxidative stress as a result of cigarette smoking is an important etiological factor in the pathogenesis of chronic obstructive pulmonary disease (COPD), a chronic steroid-insensitive inflammatory disease of the airways. The activity of the transcriptional co-repressor Histone deacetylase-2 (HDAC2) is dramatically reduced in COPD and cells exposed to oxidative stress or cigarette smoke. Moreover, curcumin (diferuloylmethane), a dietary polyphenol, at concentrations up to 1uM specifically restores cigarette smoke extract (CSE)- or oxidative stress- impaired HDAC2 activity. The aim of this study was to therefore identify any links through those gene sets that are affected by oxidative stress and subsequent treatment with curcumin in order to determine whether or not this could explain the impact of curcumin on restoration of oxidant impaired HDAC2 transcriptional co-repressor activity. Experiment Overall Design: Human PMA-differentiated U937 cells, unexposed or exposed to oxidative stress (100mM H2O2) were either left untreated or treated with curcumin (1 mM) for either 4 or 18 hr. Performed in triplicate
2009-12-17 | E-GEOD-10896 | biostudies-arrayexpress
Project description:To elucidate the bioactive property of the dietary antioxidant curcumin, we examined tissue distribution and the gene expression- and lipidomic-profiles in epididymal white adipose tissue (eWAT) of the diet-induced obese mice. Dietary intake of curcumin (0.1% W/W) didn’t affect the eWAT weight and the plasma lipid levels but reduced the levels of lipid peroxidation marker in eWAT. Curcumin was a slightly accumulated in eWAT and altered the gene expression associated with eukaryotic translation initiation factor 2 (EIF2) signaling. Curcumin suppressed the endoplasmic reticulum (ER) stress-related eIF2 phospholyration, the accumulation of macrophages and the expression of oxidative stress-sensitive transcription factor NF-κB p65 and leptin, whereas anti-inflammatory effect wasn’t enough to reduce the TNF-α and IFN-γ levels. Lipidomic- and gene expression analysis suggests that curcumin reduced the contents of some diacylglyverols (DAGs) and DAG derived glycerophospholipids by suppressing the expressions of lipogenesis-related glycerol-3-phosphate acyltransferase 1 and lipolysis-related adipose triglyceride lipase.
2018-07-02 | GSE100388 | GEO
Project description:Oxidative stress as a result of cigarette smoking is an important etiological factor in the pathogenesis of chronic obstructive pulmonary disease (COPD), a chronic steroid-insensitive inflammatory disease of the airways. The activity of the transcriptional co-repressor Histone deacetylase-2 (HDAC2) is dramatically reduced in COPD and cells exposed to oxidative stress or cigarette smoke. Moreover, curcumin (diferuloylmethane), a dietary polyphenol, at concentrations upto 1uM specifically restores cigarette smoke extract (CSE)- or oxidative stress- impaired HDAC2 activity. The aim of this study was to therefore identify any links through those gene sets that are affected by oxidative stress and subsequent treatment with curcumin in order to determine whether or not this could explain the impact of curcumin on restoration of oxidant impaired HDAC2 transcriptional co-repressor activity. Keywords: time course
2008-03-20 | GSE10896 | GEO
Project description:Curcumin, a yellow pigment extracted from the rhizome of the plant Curcuma longa (turmeric) has been widely used as a spice and herbal medicine in Asia. It has been suggested to have many biological activities such as anti-oxidative, anti-inflammatory, anti-cancer, chemopreventive, and anti-neurodegenerative properties. We evaluated the impact of curcumin on lifespan, fecundity, feeding rate, oxidative stress, locomotion and gene expression in two different wild type Drosophila melanogaster strains, Canton-S and Ives, under two different experimental conditions. We report that curcumin extended the lifespan of two different strains of Drosophila and was accompanied by protection against oxidative stress, improvement in locomotion and chemopreventive effects. Curcumin also modulated the expression of several aging related genes (genes with age-dependent changes in gene expression) such as mth, thor, InR, and JNK.
2010-04-06 | GSE21182 | GEO
Project description:Curcumin, a yellow pigment extracted from the rhizome of the plant Curcuma longa (turmeric) has been widely used as a spice and herbal medicine in Asia. It has been suggested to have many biological activities such as anti-oxidative, anti-inflammatory, anti-cancer, chemopreventive, and anti-neurodegenerative properties. We evaluated the impact of curcumin on lifespan, fecundity, feeding rate, oxidative stress, locomotion and gene expression in two different wild type Drosophila melanogaster strains, Canton-S and Ives, under two different experimental conditions. We report that curcumin extended the lifespan of two different strains of Drosophila and was accompanied by protection against oxidative stress, improvement in locomotion and chemopreventive effects. Curcumin also modulated the expression of several aging related genes (genes with age-dependent changes in gene expression) such as mth, thor, InR, and JNK. In order to evaluate the impact of curcumin and aging on gene expression, we first determined which genes were affected by aging alone in Canton S flies. Age-related changes in gene expression were defined as changes in expression levels that occurred between 3 and 40 days of age (median lifespan). Among the 18,880 probe sets in the Affymetrix GeneChip® Drosophila Genome 2.0 Array, 1,383 genes (Data on file, 7.3%, P < 0.05) had statistically significant changes in expression levels during this time frame. We next determined the effect of curcumin on gene expression levels in young and aged Canton S flies. Gene expression were defined as changes in expression levels that occurred between 3 and 40 days of aged flies with or without curcumin-feeding.
2010-04-06 | E-GEOD-21182 | biostudies-arrayexpress
Project description:Age is an independent risk factor for atrial fibrillation (AF), and curcumin can delay aging related disease through reducing oxidative stress and inflammation. However, its target in aging-related AF remains unclear. Transfer RNA-derived small RNA (tsRNA) is a novel short non-coding RNA (sncRNA), and exerts a potential regulatory function in aging. This study was to explore the therapeutic targets of curcumin in atrium of aged mice by PANDORA-seq. Aged mice (18 month) were treated with curcumin (100mg/kg). Rapid transjugular atrial pacing was performed to observe AF inducibility. SA-β-gal staining, ROS detection and qRT-PCR were used to assess the degree of aging and oxidative stress/inflammation levels. PANDORA-seq was performed to reveal the differentially expressed sncRNAs in the atrium of mice. The results showed that curcumin reduced the susceptibility AF of aged mice by improving aging-related atrial fibrosis. Compared to young mice (5 month) group, aged mice yielded 473 significantly altered tsRNA sequences, while 947 tsRNA sequences were significantly altered after treated with curcumin. Enrichment analysis revealed that the target genes were mainly related to DNA damage and protein modification. Compared with the 5mo group, the expression levels of mature-mt_tRNA-Val-TAC_CCA_end, mature-mt_tRNA-Glu-TTC_CCA_end, and mature-tRNA-Asp-GTC_CCA_end were up-regulated in the 18mo group, while the expression of mature-mt_tRNA-Thr-TGT_5_end was down-regulated. This trend was reversed in the 18mo+curcumin group. Increased cellular ROS levels, inflammation expression and senescence in aged mice atrium were improved by the down-regulation of mature-mt_tRNA-Val-TAC_CCA_end. In conclusion, our findings identified mature-mt_tRNA-Val-TAC_CCA_end participated in the mechanism of aging-related atrial fibrosis, providing new intervention target of aging-related AF.
2024-05-30 | GSE217761 | GEO
Project description:Background: Parkinson’s disease (PD), a severe threat in aging society, is a significant cause of disable. Curcumin, a polyphenol with hydrophobic properties, has been proved to against Parkinson. Our previous study provides an initial understanding of the neuroprotective mechanisms of curcumin in treating Parkinson’s disease. However, further exploration in this area is needed. The present study was designed to investigate the potential mechanism of curcumin for treating PD. Methods: The therapeutic efficacy of curcumin was evaluated using behavioral tests, immunofluorescence of tyrosine hydroxylase (TH). Network pharmacology and transcriptomics predicted the active pathway and bioprocess of curcumin in PD. Activation of the PI3K / AKT signaling pathway was confirmed by quantitative real-time PCR and immunofluorescence. Result: Curcumin restored the dyskinesia and dopaminergic neurons damage of MPTP-induced mice. The results of network pharmacology and transcriptomics showed that curcumin against Parkinson's disease by regulating inflammation, oxidative stress, and aging. The mechanisms of these were associated with activation of PI3K / AKT pathway. Conclusion: In conclusion, the mechanism of curcumin against PD was revealed by our study which lays a foundation for the application of curcumin in treating.
2023-10-19 | GSE243886 | GEO
Project description:Hepatocellular carcinoma (HCC) cells show increased resistance to various stress conditions such as oxidative stress. Conventional therapies have low efficacies due to resistance and off-target effects in HCC. Here we aimed to analyze oxidative stress-related gene expression profiles of two HCC cell lines. To identify important genes that cause resistance to reactive oxygen species (ROS), a model of oxidative stress upon selenium (Se) deficiency was utilized in which an affymetrix microarray data was generated for two isogenic HCC cell lines - HepG2 and HepG2-2.2.15 (Head-to-Tail HBV genome integration) that are either sensitive or resistant to Se deficiency dependent oxidative stress, respectively.
2020-12-29 | GSE163950 | GEO
Project description:Divergent functions of two clades of flavodoxin in diatoms mitigate oxidative stress and iron limitation Thalassiosira pseudonana and 4 open-ocean diatoms were subjected to iron limitation or short-term oxidative stress (hydrogen peroxide). mRNA profiles of T. pseudonana (CCMP1335), Thalassiosira oceanica (CCMP1005), Amphora coffeaeformis (CCMP1405), Chaetoceros sp. (CCMP199), and Cylindrotheca closterium (CCMP340).
2022-11-07 | GSE217467 | GEO