Project description:To investigate effects of intake of Eucommia ulmoides leaves on hyperlipidemia, we performed gene expression profiling on rat liver by microarray analysis. Microarray analysis revealed that Eucommia ulmoides leaves up-regulated the gene expression involved in alpha-, beta-, and omega-oxidation of fatty acids, mainly relating to peroxisome proliferator-activated receptor signaling pathway.
Project description:To investigate effects of intake of mulberry leaves on hyperlipidemia, we performed gene expression profiling on rat liver by microarray analysis. Microarray analysis revealed that mulberry leaves up-regulated the genes involved in alpha-, beta-, and omega-oxidation of fatty acids, mainly relating to peroxisome proliferator-activated receptor signaling pathway, and down-regulated the gene expression involved in lipogenesis. Furthermore, the genes relating to response to oxidative stress were up-regulated in rats administrated mulberry leaves.
Project description:Interventions: primary colorectal cancer group VS healthy control group:no intervention
Primary outcome(s): Peroxisome proliferator-activated receptor delta-87T>C
Study Design: Factorial
Project description:Reduced bone morphogenetic protein receptor (BMPR)2 expression in patients with pulmonary arterial (PA) hypertension (PAH), can impair PA endothelial cell (EC) function. We now characterize, in human PAECs, a novel BMPR2-mediated transcriptionally active complex between peroxisome proliferator-activated receptor (PPAR) gamma and beta-catenin (BC), and show that disruption of this complex impairs BMP mediated HPAEC survival. Using whole genome wide ChIP-Chip promoter analysis we delineate PPARG-BC dependent transcription of target genes that include apelin. Comparison of ppar-gamma and beta-catenin occupancy on promoter regions from human pulmonary artery endothelial cells after either treatment with BMP2 or control. A total of 8 samples were created using NimbleGen human HG18 promoter arrays.
Project description:The progression towards type 2 diabetes depends on the success of the allostatic response of the pancreatic beta cells to synthesise and secrete enough insulin to compensate for insulin resistance. The endocrine pancreas is a plastic tissue able to expand or regress in response to the requirements imposed by physio and pathological states such as pregnancy, obesity or ageing. The mechanisms, mediating beta cell mass expansion in these scenarios are not well defined. We have recently showed that beta cell mass failed to expand in ob/ob mice with genetic ablation of PPARγ2, a mouse model known as the POKO mouse. This phenotype contrasted with the appropriate expansion of the beta cell mass observed in their obese littermate ob/ob mice. Here we investigate PPAR gamma dependent transcriptional responses occurring during early stages of the adaptation of beta cells to insulin resistance. As it could be expected we have identified genes known to regulate proliferation and survival signals of the beta cells. Moreover we have also identified new pathways induced in ob/ob islets that fail to do so in POKO islets. Our data suggest that the expansion of beta cell mass observed in ob/ob islets is associated with activation of immune response and is missing in POKO islets. Other PPARγ dependent differentially regulated pathways include cholesterol biosynthesis, apoptosis through TGF-β signaling and decreased oxidative phosphorylation. In this study, we used gene expression arrays to investigate differences between four experimental classes by pairs
Project description:This is a phase 1/1b open label, multicenter dose escalation and dose expansion study to investigate the safety, tolerability and anti-tumor activity of TPST-1120, a small molecule selective antagonist of PPARα (peroxisome proliferator activated receptor alpha) as monotherapy and in combination with a systemic anticancer agent, nivolumab, an anti-PD1 antibody, in subjects with advanced solid tumors.
Project description:To investigate effects of intake of Eucommia ulmoides leaves on hyperlipidemia, we performed gene expression profiling on rat liver by microarray analysis. Microarray analysis revealed that Eucommia ulmoides leaves up-regulated the gene expression involved in alpha-, beta-, and omega-oxidation of fatty acids, mainly relating to peroxisome proliferator-activated receptor signaling pathway. Rats were fed a high-fat diet and high-fructose water without/with orally administration of Eucommia ulmoides leaves for 5 weeks. Livers were taken for RNA extraction and hybridization on Agilent microarrays.
Project description:We investigated gene expression changes in the cardiac tissue of a transgenic mouse model overexpressing Peroxisome proliferator-activated receptor gamma coactivator 1-alpha isoform 4 (PGC-1α4) specifically in cardiomyocytes at the neonatal stage and at the age of four weeks.
Project description:Reduced bone morphogenetic protein receptor (BMPR)2 expression in patients with pulmonary arterial (PA) hypertension (PAH), can impair PA endothelial cell (EC) function. We now characterize, in human PAECs, a novel BMPR2-mediated transcriptionally active complex between peroxisome proliferator-activated receptor (PPAR) gamma and beta-catenin (BC), and show that disruption of this complex impairs BMP mediated HPAEC survival. Using whole genome wide ChIP-Chip promoter analysis we delineate PPARG-BC dependent transcription of target genes that include apelin.
