Project description:Cold stimulation not only activates the thermogenesis activity of brown adipose tissue (BAT) but also induces browning of white adipose tissue (WAT). To elucidate the mechanisms underlying cold-induced thermogenesis and adipose tissue remodeling, we used RNA sequencing (RNA-seq) and liquid chromatography-tandem mass spectrometry (LC-MS/MS) to examine the transcriptomic and proteomic profiles, respectively, of adipose tissue from mice exposed to cold or thermoneutral temperature. The male C57BL/6J mice were divided into three groups (5 mice/group), two groups were kept at 6 ˚C for 6 h and 24 h, respectively, and the control group were kept at 22 ˚C for 24 h. Subsequently, the BAT and inguinal WAT of each mouse were dissected and subjected to RNA-seq and data-independent acquisition (DIA)-based LC-MS/MS.
Project description:global proteomic analysis of subcutaneous white adipose tissue (sWAT) revealed a marked upregulation of proteins involved in oxidative phosphorylation in both male and female KPC mice relative to controls. We also observed a similar induction of oxidative phosphorylation in non-tumour animals treated with the β3-AR agonist CL-316243 to mimic the physiological induction of WAT browning.
Project description:Brown adipose tissue (BAT) in rabbits undergoes rapid involution, i.e. transforming to white adipose tissue (WAT), similarly to what happens in humans. We aim to profile the transcriptomic changes of total BAT and the stromal vascular fraction (SVF) that contains adipocyte progenitors at the global and single-cell levels.
Project description:We conducted expression profiling of white adipose tissue isolated from WT and miR-22 KO animals. The main work is analysis of the miR-22 function in striated muscle. White adipose tissue (WAT) was analyzed to look at effects in WAT, as that might be induced by metabolic changes in skeletal muscle.
Project description:Despite a variety of seasoning ingredients in diets, little is known about their cooperative effect on animal metabolism. We fed rats a diet containing 30 wt.% instant noodle with a 26% fat-to-energy ratio for 30 days (N-group). Compared with rats that were fed the same diet without seasonings (C-group), the N-group showed lower liver triacylglycerol levels and higher fecal cholesterol levels. To assess the mechanisms underlying this phenotype, we conducted transcriptome analyses of the hypothalamic–pituitary axis (HP), liver and white adipose tissue (WAT). Our results suggest that these ingredients may affect lipid homeostasis via the HP axis.
Project description:Despite a variety of seasoning ingredients in diets, little is known about their cooperative effect on animal metabolism. We fed rats a diet containing 30 wt.% instant noodle with a 26% fat-to-energy ratio for 30 days (N-group). Compared with rats that were fed the same diet without seasonings (C-group), the N-group showed lower liver triacylglycerol levels and higher fecal cholesterol levels. To assess the mechanisms underlying this phenotype, we conducted transcriptome analyses of the hypothalamic–pituitary axis (HP), liver and white adipose tissue (WAT). Our results suggest that these ingredients may affect lipid homeostasis via the HP axis.
Project description:Despite a variety of seasoning ingredients in diets, little is known about their cooperative effect on animal metabolism. We fed rats a diet containing 30 wt.% instant noodle with a 26% fat-to-energy ratio for 30 days (N-group). Compared with rats that were fed the same diet without seasonings (C-group), the N-group showed lower liver triacylglycerol levels and higher fecal cholesterol levels. To assess the mechanisms underlying this phenotype, we conducted transcriptome analyses of the hypothalamic–pituitary axis (HP), liver and white adipose tissue (WAT). Our results suggest that these ingredients may affect lipid homeostasis via the HP axis.
Project description:Transcriptome analysis of epididymal white adipose tissue (WAT) depots in Ercc1 animals: To further elucidate the role of ERCC1 in WAT we scanned the transcriptome of 15 day old wt and Ercc1 epididymal WAT.
Project description:Obesity has progressively become a global concern. It contributes to adipose tissue dysfunction, leading to metabolic disorders, and chronic systemic inflammation. Our previous study showed that the conjugation between chitooligosaccharides (COS) and epigallocatechin-3-gallate (EGCG) diminished lipid accumulation and promoted browning of white adipose tissue (WAT) in high fat diet (HFD)-induced obese rats.
Project description:The induction of beige adipocytes in white adipose tissue (WAT), also known as WAT beiging, improves glucose and lipid metabolism. However, the regulation of WAT beiging at the posttranscriptional level remains elusive. Here, we report that METTL3, the methyltransferase of N6-methyladenosine (m6A) mRNA modification, is induced during WAT beiging in mice. Adipose-specific depletion of Mettl3 gene undermines WAT beiging. Transcriptomic analysis of m6A modifications and mRNA expression level reveals global reduction of m6A-modified mRNAs in Mettl3-depleted beige adipose tissue. In particular, METTL3-catalyzed m6A installation on Krüppel-like factor 9 (Klf9) mRNA prevents its degradation. We further demonstrate that the m6A reader protein IGF2BP3 mediates the stabilization of m6A-modified Klf9 mRNA. Overexpressioin of KLF9 protein reverses the impaired WAT beiging elicited by Mettl3 deletion. These findings uncover a novel epitranscriptional mechanism in WAT beiging and identify METTL3-KLF9 axis as a potential therapeutic target for obesity-associated disorders.
