Depot-specific transcriptomic profiling of white adipose tissue following NRF2 activation in obese mice_iWAT
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ABSTRACT:
ORGANISM(S): Mus musculus
PROVIDER: GSE345603 | GEO | 2026/08/31
REPOSITORIES: GEO
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Project description:This project investigates the depot-specific transcriptomic alterations in white adipose tissue following NRF2 activation in the context of obesity. High-fat diet (HFD)-fed C57BL/6J mice were treated with Vehicle or the NRF2 activator CDDO-Im.
2026-08-31 | GSE345601 | GEO
Project description:Nrf2 null mice administered CDDO-IM Nrf2 null mice treated with CDDO-IM
2014-02-18 | E-GEOD-55003 | biostudies-arrayexpress
Project description:Nrf2 null mice administered CDDO-IM
2014-02-18 | GSE55003 | GEO
Project description:Genetic versus chemoprotective activation of Nrf2 signaling: overlapping yet distinct hepatic gene expression profiles between Keap1 knockout and triterpenoid treated mice; Loss of Nrf2 signaling increases susceptibility to acute toxicity, inflammation, and carcinogenesis in mice due to the inability to mount adaptive responses. By contrast, disruption of Keap1 (a cytoplasmic modifier of Nrf2 turnover) protects against these stresses in mice; although dominant negative mutations in Keap1 have been identified recently in some human cancers. Global characterization of Nrf2 activation is important to exploit this pathway for chemoprevention in healthy, yet at-risk individuals and also to elucidate the consequences of hijacking the pathway in Keap1-mutant human cancers. This analysis also enables a global characterization of the pharmacodynamic action of CDDO-Im at a low dose that is relevant to chemoprevention. Experiment Overall Design: Liver-targeted conditional Keap1-null (CKO) mice provide a model of genetic activation of Nrf2 signaling. By coupling global gene expression analysis of CKO mice with analysis of pharmacologic activation using the synthetic oleanane triterpenoid CDDO-Im, we are able to gain insight into pathways affected by Nrf2 activation. CDDO-Im is an extremely potent activator of Nrf2 signaling. CKO mice were used to identify genes modulated by genetic activation of Nrf2 signaling. The CKO response was compared to hepatic global gene expression changes in wild-type mice treated with CDDO-Im at a maximal Nrf2 activating dose. n=3/group, male 9 week old mice were used. Mice were treated with a single dose of vehicle (10% Cremophor-EL, 10% DMSO, and PBS) or 30 umol CDDO-Im/kg body weight by gavage and sacrificed 6 h later.
2009-05-11 | E-GEOD-15633 | biostudies-arrayexpress
Project description:Alzheimer’s disease (AD) is the most common etiology of dementia. The transcription factor NF-E2-related factor 2 (NRF2) induces the expression of genes encoding phase II detoxification and antioxidant genes. NRF2 is regulated by Kelch-like ECH-associated protein 1 (KEAP1), and the KEAP1-NRF2 system is the key regulatory system involved in cytoprotection. To examine whether pharmacological induction of NRF2 expression alleviates AD phenotypes in vivo, we employed two AD mouse models, i.e., AppNL-G-F/NL-G-F (AppNLGF) and APPV717I::TAUP301L (APP/TAU) mice. As the synthetic oleanane triterpenoid 1-[2-cyano-3,12-dioxooleana-1,9(11-dien-28-oyl)] (CDDO)-4(-pyridin-2-yl)-imidazole (CDDO-2P-Im) exhibits strong NRF2-inducing activity, in this study, we treated AD model mice with CDDO-2P-Im.
2024-09-09 | GSE271154 | GEO
Project description:Nrf2 is an important therapeutic target as activation of this pathway detoxifies harmful insults and reduces oxidative stress. However, the role of Nrf2 in cancer biology is controversial. Protection against oxidative stress and inflammation can confer a survival advantage to tumor cells, leading to a poor prognosis, and constitutive activation of Nrf2 has been detected in numerous tumors. In our study, we examined the role of two clinically relevant classes of Nrf2 activators, the synthetic triterpenoids (CDDO-Im and CDDO-Me) and dimethyl fumarate (DMF) in lung cancer. Using microarrays, we attempt to examine whether these Nrf2 activators have an effect on the same subset of Nrf2 genes.
2015-05-31 | GSE65623 | GEO
Project description:Nrf2 (NF-E2-related-factor-2) contributes to the maintenance of glucose homeostasis in vivo. Nrf2 suppresses blood glucose levels by protecting pancreatic β-cells from oxidative stress and improving peripheral tissue glucose utilization. To elucidate the molecular mechanisms by which Nrf2 contributes to the maintenance of glucose homeostasis, we generated skeletal muscle (SkM)-specific Keap1-knockout (Keap1MuKO) mice that express abundant Nrf2 in SkM and then examined Nrf2-target gene expression in this tissue. In Keap1MuKO mice, blood glucose levels were significantly downregulated, and the levels of glycogen branching enzyme (Gbe1) mRNA, along with those of glycogen branching enzyme (GBE) protein, were significantly upregulated in mouse SkM. Consistent with this result, chemical Nrf2-inducers promoted Gbe1 mRNA expression in both mouse SkM and C2C12 myotubes. Chromatin-immunoprecipitation analysis demonstrated that Nrf2 binds the Gbe1 upstream promoter regions. In Keap1MuKO mice, muscle glycogen content was strongly reduced, and forced GBE expression in C2C12 myotubes promoted glucose uptake. Therefore, our results demonstrate that Nrf2-induction in SkM increases GBE expression and reduces muscle glycogen content, resulting in improved glucose tolerance. Chromatin occupancy of Nrf2 under CDDO-Im-treated condition were generated by deep sequencing, in dupliplicate
2016-04-06 | E-GEOD-78780 | biostudies-arrayexpress
Project description:The Keap1/Nrf2 signaling pathway is a tractable target for the pharmacological prevention of tumorigenesis. 3H-1,2-dithiole-3-thione (D3T) and 1-[2-cyano-3,12-dioxooleana-1,9(11)-dien-28-oyl]imidazole (CDDO-Im) are representative members of two classes of Nrf2-activating chemopreventive agents. Natural dithiolethiones have been widely used in clinical trials for cancer chemoprevention. Synthetic triterpenoids, however, have been shown to be significantly more potent Nrf2 activators and are under clinical evaluation for the treatment of chronic kidney disease. This study seeks to characterize the structure-activity relationship between D3T and CDDO-Im in mouse liver tissue. To this end we treated Wt and Nrf2-null mice with 300 umol/kg bw D3T and 3, 10, and 30 umol/kg bw CDDO-Im every other day for 5 days and evaulated global gene expression changes as a product of both treamtent and genotype using Affymetrix microarray.
2018-02-25 | GSE99199 | GEO
Project description:Alzheimer’s disease (AD) is characterized by amyloid-beta (Aβ) plaques and neurofibrillary tangles, accompanied by elevated oxidative stress and inflammation. Microglia, the resident macrophages in the brain, play a key protective role by clearing plaques and damaged neurons. NRF2 (Nuclear factor erythroid 2-related factor 2) is a master regulator of cytoprotection against oxidative stress, whose activation alleviates oxidative damage, neuroinflammation, and cognitive deficits in AD models. However, direct targets of NRF2 in microglia remain unclear. In this study, we demonstrate that NRF2 activation by CDDO-Im significantly suppresses inflammation in human microglial cells (HMC3) stimulated by IFN-γ or Aβ. Through integrative RNA-sequencing and ChIP-sequencing analysis of NRF2, we identified five representative NRF2 directly target genes involved in inflammation (e.g., IL6, CDK6) and another five in autophagy (e.g., TFE3, SQSTM1). Public single-cell transcriptomic data further underscored the critical role of microglia in NRF2-mediated autophagy regulation within AD brains. Our findings revealed new direct NRF2 target genes, highlighting dual role of NRF2 in suppressing inflammation and enhancing autophagy, thus providing novel insights for therapeutic interventions in AD.
2025-11-27 | GSE300540 | GEO
Project description:Genetic versus chemoprotective activation of Nrf2 signaling: overlapping yet distinct hepatic gene expression profiles between Keap1 knockout and triterpenoid treated mice Loss of Nrf2 signaling increases susceptibility to acute toxicity, inflammation, and carcinogenesis in mice due to the inability to mount adaptive responses. By contrast, disruption of Keap1 (a cytoplasmic modifier of Nrf2 turnover) protects against these stresses in mice; although dominant negative mutations in Keap1 have been identified recently in some human cancers. Global characterization of Nrf2 activation is important to exploit this pathway for chemoprevention in healthy, yet at-risk individuals and also to elucidate the consequences of hijacking the pathway in Keap1-mutant human cancers. This analysis also enables a global characterization of the pharmacodynamic action of CDDO-Im at a low dose that is relevant to chemoprevention.
2009-05-01 | GSE15633 | GEO