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Changes in Hepatic Gene Expression upon Oral Administration of Taurine-Conjugated Ursodeoxycholic Acid in ob/ob Mice

ABSTRACT: We examined the effect of oral TUDCA treatment on hepatic steatosis and associated changes in hepatic gene expression in ob/ob mice.

ORGANISM(S): Mus musculus

PROVIDER: GSE22608 | GEO | 2010/12/31

SECONDARY ACCESSION(S): PRJNA128347

REPOSITORIES: GEO

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Changes in Hepatic Gene Expression upon Oral Administration of Taurine-Conjugated Ursodeoxycholic Acid in ob/ob Mice

Project description:We examined the effect of oral TUDCA treatment on hepatic steatosis and associated changes in hepatic gene expression in ob/ob mice. We administered TUDCA to ob/ob mice at a dose of 500 mg/kg twice a day by gastric gavage for 3 weeks. Body weight, glucose homeostasis, endoplasmic reticulum (ER) stress, and hepatic gene expression were examined in comparison with control ob/ob mice and normal littermate C57BL/6J mice.

2010-12-31 | E-GEOD-22608 | biostudies-arrayexpress

Changes in hepatic gene expression upon oral administration of taurine-conjugated ursodeoxycholic acid in ob/ob mice.

Project description: Not available

| S-EPMC2974643 | biostudies-literature

Expression Profiling of Livers From Female FC-ob Mice and MRKO-ob Mice

Project description:Objective: To investigate the effects of myeloid MR deletion on hepatic gene expression profiles in female mice Methods: 12-week old female FC-ob and MRKO-ob mice were euthanized and livers were collected and snap-frozen with liquid nitrogen. Total RNA were extracted using Trizol. After assessing the RNA quality with an Agilent 2000 Bioanalyzer, cDNA library was constructed using TruSeq RNA-Seq Sample Prep Kits. Deep sequencing was carried out on Illumina HiSeq 2000. Different gene expressions were confirmed by QRT-PCR. Results: With RNA-seq data, we identified 24 genes that differently expressed in MRKO-ob mice compared to FC-ob group. Confirmation with QRT-PCR revealed that the differently expressed genes were closely associated with hepatic steatosis, especially de novo lipogenesis. Conclusions: Our study investigated for the first time the gene expression profiles of female ob/ob mice with or without myeloid MR ablation. These findings provided clues to explore the mechanisms underlied the crosstalk between macrophages and hepatocytes in females. These findings have provided new knowledge basis for potential new strategies to treat or prevent NAFLD and T2DM.

2016-09-20 | GSE73438 | GEO

Hepatic gene expression profiling reveals key pathways involved in leptin mediated weight loss in ob/ob mice.

Project description:The purpose of this study was to identify leptin target genes and subsequent pathways correlated with leptin-mediated weight loss. We utilized the microarray technology to compare two types of leptin administration: one involving a direct stimulatory effect when administered peripherally (subcutaneous: SQ) and another that is indirect, involving a hypothalamic relay that suppresses food intake when leptin is administered centrally (intracerebroventricular: ICV). We report here the impact of central and peripheral administration of leptin on food intake, body weight and body fat composition in ob/ob mice. We also report hepatic gene expression changes caused by central versus peripheral leptin administration. Keywords: comparison Leptin deficient (ob/ob) mice were continuously administered leptin over 12-days using central (intracerebroventricular) or peripheral (subcutaneous) route of administration. Liver RNA was extracted and hybridized to Illumina microarrays and gene expression data was analyzed. The global gene expression profiles were compared after the central and peripheral leptin treatments in ob/ob mice and C57BL6 mice were used for the baseline gene expression.

2010-11-10 | E-GEOD-20878 | biostudies-arrayexpress

The Plant-derived Lipoxygenase Inhibitor Nordihydroguaiaretic Acid (NDGA) Attenuates Dyslipidemia and Hepatic Steatosis by Enhancing Fatty Acid Oxidation through Activation of PPAR-alpha

Project description:To test whether NDGA attenuate dyslipidemia and hepatic steatosis by enhancing fatty acid oxidation through activation of PPAR-α. Using wild type (WT, C57BL/6) fed with chow diet as control, WT mice were either fed with high-fat diet or high-fat diet with NDGA (2.5g/kg food); ob/ob mice were fed with either chow or chow with NDGA (2.5 g/kg food), and maintained on the respective diets for 16 weeks. The expression of lipid metabolism related genes in the liver of these mice were analyzed using Phalanx GPL6845 platform (Mouse OneArray V1). Together with other biochemical/physiological data, our results suggest that the beneficial actions of NDGA on dyslipidemia and hepatic steatosis in ob/ob mice are exerted primarily through enhanced fatty acid oxidation and energy utilization via the activation of PPAR- α receptor activity. To examine the changes in gene expression in liver of WT and ob/ob mice with different NDGA diet treatment, RNA isolated from 3 animals of each group were used for studies of gene expression profiles. Phalanx GPL6845 platform (Mouse OneArray V1) was used for the microarrays analysis.

2012-03-29 | E-GEOD-35075 | biostudies-arrayexpress

Hepatic gene expression profiling reveals key pathways involved in leptin mediated weight loss in ob/ob mice.

2010-11-10 | GSE20878 | GEO

Nordihydroguaiaretic Acid Improves Metabolic Dysregulation and Aberrant Hepatic Lipid Metabolism in Mice by Both PPAR-alpha-Dependent and -Independent Pathways

2012-03-30 | GSE35075 | GEO

Gene expression in livers of Lepob/ob (ob/ob) mice v.s. wild type C57BL/6J mice

Project description:To identify novel transcriptional factors involved in dysfunctional hepatic lipids homeostasis in obesity, mRNA microarray analysis were performed to of livers of ob/ob mice, a widely used obese model, and C57BL/6J control mice. Chow-fed ob/ob and C57BL/6J mice were housed in a 12 h of light and 12 h of dark cycle and fed ad libitum a regular chow diet. Mice were sacrificed at 16:00 (Zeitgeber Time 8 during light phase). Total RNA was prepared from each liver using TRIzol (Invitrogen). Equal aliquots of total RNA from each of four mouse livers in each group were pooled and used for biotin labeling as described in the Affymetrix technical bulletin. Then the transcriptional profiles of samples were probed using the Gene-Chip Mouse Genome 430 2.0 arrays.

2014-06-29 | E-MTAB-2678 | biostudies-arrayexpress

Fumarate hydratase orchestrates hepatic steatosis via ULK1 mediated lipophagy

Project description:Hepatic lipid homeostasis is coordinated by various metabolic pathways, such as lipogenesis, lipid uptake, storage, and oxidation. However, the underlying mechanism that orchestrates metabolic crosstalk remains unclarified. Herein, we demonstrated that fumarate hydratase (FH) functioned as an indispensable adaptor governing mitochondria metabolism and lipid droplets (LDs) degradation. Hepatic FH overexpression prevented hepatic steatosis in normal mice and ob/ob mice without interfering mitochondrial lipid oxidation and lipogenesis. Strikingly, we found that FH selectively activated lipophagy-mediated LDs lipidolysis. Mechanistically, FH interacted with ULK1 and stabilized ULK1 through preventing its ubiquitination and degradation, resulting in lipophagy activation and the elimination of hepatic lipid accumulation. Meanwhile, hepatic ULK1 deficiency abrogated the protective effects in FH-overexpressing mice. Also, we clarified that the interaction between FH and ULK1 occurred in cytoplasm, but not in mitochondria. Cytoplasmic FH was sensitive to lipids and downregulated without affecting mitochondrial FH in vivo. Moreover, the FH-ULK1 axis was identified closely associated with hepatic steatosis in human patients. Taken together, our research demonstrates a “two-side” insight of FH on hepatic lipid metabolism and provides a promising strategy for fatty liver treatment.

2024-02-26 | GSE256510 | GEO

Gene expression in the GWAT of ob/ob and ob/ob/Fsp27-/- mice

Project description:GWAT store most of the TAG in mice, ob/ob mice is an obese mice. Ob/ob/Fsp27-/- mice are lean when compared with ob/ob mice. The GWAT weight was dramatically reduced in ob/ob/Fsp27-/- mice. We next extract the total RNA from the GWAT of ob/ob and ob/ob/Fsp27-/- mice, to perform microaary analysis using Mouse Genome 430 2.0 arrays, Affymetrix. We then analysised the up-regulated and down regulated pathways.

2015-04-17 | GSE59807 | GEO

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