Project description:mir342-/- and mir342wt/wt C57BL/6J mice were fed with standard diet (STD) and high fat-high sucrose diet (HFHS). We used microarrays to investigate the mRNA expression profile in the epididymal adipose tissues.
Project description:mir221/222 AdipoKO and mir221/222 flox/y C57BL/6J mice were fed with standard diet (STD) and high fat-high sucrose diet (HFHS). We used microarrays to investigate the mRNA expression profile in the epididymal adipose tissues.
Project description:C57Bl6/J male mice were put on different diets at 5 weeks of age, with a standard diet (SD) or a High-Fat High-Sucrose Diet (HFHS) or a Choline-Deficient High-Fat Diet (CDHFD) during 6 months. Primary hepatocytes cultures from 3 different models were synchronized in the cell cycle. Transcriptomic analysis was perfomed at 48hours of culture when HFHS and CDHFD hepatocytes harbor replication stress.
Project description:Metabolic syndrome (MetS) is a complex disorder with multidimensional etiology that encompasses diverse symptoms such as hyperlipidemia, abdominal obesity, and insulin resistance. Western diets such as the high fat high sucrose diet (HFHS) and those high in fructose ave been associated with increased prevalence of MetS. Despite the fact that various metabolic tissues have been implicated in MetS pathogenesis, the role of individual cell types embedded in these tissues has yet to be elucidated. To address this, we performed single cell RNA sequencing to examine thousands of individual cells from the hypothalamus, liver, adipose, and small intestine from both HFHS- and fructose-induced MetS mouse models. We found differential sensitivity of responsive cell types, genes, and pathways between HFHS and fructose diets, with hypothalamic neurons particularly sensitive to the high fructose diet and adipose progenitor cells particularly sensitive to HFHS diet. Network analysis identified both known (Avp, Apoe, C3) and novel ligands (Gal and Fga) that mediate ligand-receptor crosstalk between tissues in MetS. The identification of major cell types, molecular pathways, and regulators of MetS induced by different risk diets facilitates precision treatment of MetS subtypes.
Project description:There is growing evidence that energy metabolism and insulin action are regulated by mechanisms that follow a diurnal rhythm and it has been proposed that defects in Akt signalling are associated with the pathophysiology of metabolic disease. It is therefore important to investigate these parameters under physiology of the free-living state. We therefore examined the insulin action in muscle of chow or high fat, high sucrose diet-fed (HFHS) rats during the normal diurnal cycle. HFHS animals displayed hyperinsulinemia, however had reduced systemic glucose disposal and impaired muscle glucose uptake during the feeding period. Proteomics and phosphoproteomics was performed over the diurnal cycle in chow and HFHS rats.
Project description:To determine CREBH-mediated hepatic gene expression changes in hifh-fat high-sucrose (HFHS) dit feeding, we employed the microarray analysis. We collected the livers from male WT and CREBH-Tg mice fed with HFHS diet for 12 weeks from 6 weeks old.
Project description:The impact of high fat diet on secreted milk small RNA transcriptome was studied by isolating total RNA from milk fat fraction collected on lactation day 10 from control diet fed (C; n=5; 10% fat; 7% sucrose; Research Diets #D12450J, Brunswick, NJ) and high fat diet fed (HF; n=4; Research Diets #D12492, 60% of total kcal energy is fat and match 7% of total kcal is sucrose; Brunswick, NJ) mice.