Project description:Synthesis of the metabolic transcription factor C/EBPβ-LIP is stimulated by mTORC1, which critically depends on a short upstream open reading frame (uORF) in the C/EBPβ-mRNA. We tested if that reduced C/EBPβ-LIP expression due to genetic ablation of the uORF delays the development of age-associated phenotypes in mice.
Project description:We report a mutant mouse in which the uORF encoded by the PPARGC1A gene is disrupted via mutation of its start codon (uORF-TAA mutation). RNA-seq was used to assess differential gene expression in uORF-TAA versus wild-type mice in two metabolically important tissues that express PPARGC1A: skeletal mucle and brown adipose tissue.
Project description:We used Adamts12−/− and wild-type mice generated and genotyped by El Hour et al. 2010 (PMID: 20208563). eight-week-old females were treated by intraperitoneal injections of CCl4 (Sigma-Aldrich, St. Louis, MO, USA) diluted at 3% v/v in olive oil. A single dose of CCl4 0.3 ml/kg of mouse body weight was administered (acute treatment) and mice were sacrificed after 4h, 12h, 24h or 7 days. Control mice were treated with the vehicle (olive oil). Liver samples were collected, weighed and treated as previously described (Kesteloot et al. 2007, PMID: 17929299). We performed gene expression profiling analysis using data obtained from liver samples of wild-type or Adamts12_KO mice at different time points after CCl4 (or vehicle) injection.
Project description:Mice wild type or knocked-out for the MyD88 gene specifically in liver, were recruited for this expression profiling experiment. Each group of mice (WT versus LKO) were fed with a control diet or a high fat diet. Then mice were sacrificed and liver samples form were processed for RNA extraction. Total liver RNA of each sample was then pooled with those of the same group and treatment for microarray hybridization.