Project description:Purpose: The goal of this study are to compare global gene expression profile in brown adipose tissue in Cdk7 bKO and WT control mice at both RT and after 6 hours cold exposure Methods: Interscapular BAT pads were taken from 12-week-old CDK7 bKO and control littermates either at room temperature or after 6 hours of cold exposure with food. Mice were sacrificed at zeitgeber time 9. Total RNA was extracted with TRI Reagent (Sigma). Two RNA samples from two mice with same genotype and condition were pool together (each 250 ng) to constitute 500 ng of total RNA from biological triplicates (three WT-RT, three CDK7 bKO-RT, three WT-cold, and three CDK7 bKO-cold) for sequencing. Results: Reads were also aligned to the Mus musculus.GRCm38.86 transcriptome using STAR (v. 2.5.2b, Dobin et al. 2013) and the estimation of the isoforms abundance was computed using RSEM (v. 1.2.31, Li and Dewey 2011). Conclusions: Differentially expressed genes (DEGs) were identified between genotype and treatment.
Project description:Human antigen R (HuR) is a member of the Hu family of RNA-binding proteins and is involved in many physiological processes. To investigate the role of adipose HuR, we generate adipose-specific HuR knockout (HuRAKO) mice. As compared with control mice, HuRAKO mice show obesity when induced with a high-fat diet, along with insulin resistance, glucose intolerance, hypercholesterolemia and increased inflammation in adipose tissue. The obesity of HuRAKO mice is attributed to adipocyte hypertrophy in white adipose tissue due to decreased expression of adipose triglyceride lipase (ATGL), a critical lipase involved in lipolysis. HuR positively regulates ATGL expression by promoting the mRNA stability and translation of ATGL. Consistently, the expression of HuR in adipose tissue is reduced in obese humans, which is associated with reduced ATGL expression. This study suggests that adipose HuR may be a critical regulator of ATGL expression and lipolysis and thereby controls obesity and metabolic syndrome.
Project description:These arrays contain data from gonodal adipose tissue of aP2-Pex5 -/- male mice 4 arrays from gonadal adipose tissue from control mice (Swiss background) are compared with 4 arrays from gonadal adipose tissue of aP2-Pex5 knockout mice. The latter lack functional peroxisomes in adipose tissue.
Project description:Mice expressing Cas9 were administered AAV8-UCP1 sgRNA to the brown adipose tissue for inducible knockout. Mice were housed at 22ºC for two weeks and then were sacrificed. Brown adipose tissue (BAT) was harvested and RNAseq was performed to determine transcriptional changes stemming from inducible UCP1 knockout.