GEO DataSets

(Submitter supplied) Background: Studies in mice have shown that PPARα is an important regulator of lipid metabolism in liver and a key transcription factor involved in the adaptive response to fasting. However, much less is known about the role of PPARα in human liver. Here we set out to study the function of PPARα in human liver via analysis of whole genome gene regulation in human liver slices treated with the PPARα agonist Wy14643. more...

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL11532

8 Samples

Download data: CEL

(Submitter supplied) Studies in mice have shown that PPARα is an important regulator of hepatic lipid metabolism and the acute phase response. However, little information is available on the role of PPARα in human liver. Here we set out to compare the function of PPARα in mouse and human hepatocytes via analysis of target gene regulation. Primary hepatocytes from 6 human and 6 mouse donors were treated with PPARα agonist Wy14643 and gene expression profiling was performed using Affymetrix GeneChips followed by a systems biology analysis. more...

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL570

24 Samples

Download data: CEL

(Submitter supplied) The role of PPARα in gene regulation in mouse liver is well characterized. However, less is known about the effect of PPARα activation in human liver. The aim of the present study was to better characterize the impact of PPARα activation on gene regulation in human liver by combining transcriptomics with the use of hepatocyte humanized livers. To that end, chimeric mice containing hepatocyte humanized livers were given an oral dose of 300 mg/kg fenofibrate daily for 4 days. more...

Organism:

Mus musculus; Homo sapiens

Type:

Expression profiling by array

Platform:

GPL11532

6 Samples

Download data: CEL

(Submitter supplied) Studies in mice have shown that PPARα is an important regulator of hepatic lipid metabolism and the acute phase response. However, little information is available on the role of PPARα in human liver. Here we set out to compare the function of PPARα in mouse and human hepatocytes via analysis of target gene regulation. Primary hepatocytes from 6 human and 6 mouse donors were treated with PPARα agonist Wy14643 and gene expression profiling was performed using Affymetrix GeneChips followed by a systems biology analysis. more...

Organism:

Homo sapiens; Mus musculus

Type:

Expression profiling by array

Platforms:

GPL1261 GPL570

48 Samples

Download data: CEL

(Submitter supplied) Studies in mice have shown that PPARα is an important regulator of hepatic lipid metabolism and the acute phase response. However, little information is available on the role of PPARα in human liver. Here we set out to compare the function of PPARα in mouse and human hepatocytes via analysis of target gene regulation. Primary hepatocytes from 6 human and 6 mouse donors were treated with PPARα agonist Wy14643 and gene expression profiling was performed using Affymetrix GeneChips followed by a systems biology analysis. more...

Organism:

Mus musculus

Type:

Expression profiling by array

Platform:

GPL1261

24 Samples

Download data: CEL

(Submitter supplied) If the function of the nuclear receptor PPARa is well-known during a prolongated fasting, its hepatic biological function during feeding and refeeding conditions still needs to be investigated. Moreover, in vivo data collected so far on PPARa function during fasting were obtained using the total Ppara KO transgenic mouse model. To identify genes whose expression is under the strict dependence of hepatic PPARa activity, we generated a new mouse strain of PPARa-specific deletion in hepatocyte (albumin-Cre+/- Pparaflox/flox or LKO) and we compared them to total Ppara KO (KO), wild-type (WT) and liver WT (albumin-Cre-/- Pparaflox/flox or LWT) mice under three nutritional challenges. more...

Organism:

Mus musculus

Type:

Expression profiling by array

Platform:

GPL10787

52 Samples

Download data: TXT

(Submitter supplied) Fenofibrate is a specific agonist of the nuclear receptor PPARa. To identify the gene expression under the strict dependence of hepatic PPARa activity, we generated a new mouse strain of PPARa-specific deletion in hepatocyte (albumin-Cre+/- Pparaflox/flox or LKO) and we compared them to total Ppara KO (KO), wild-type (WT) and liver WT (albumin-Cre-/- Pparaflox/flox or LWT) mice. We used microarrays to detail the global programme of gene expression in liver of Ppara LKO, LWT, Ppara KO and WT male mice.

Organism:

Mus musculus

Type:

Expression profiling by array

Platform:

GPL10787

34 Samples

Download data: TXT

(Submitter supplied) This SuperSeries is composed of the SubSeries listed below.

Organism:

Mus musculus

Type:

Expression profiling by array

Platforms:

GPL7440 GPL1261

59 Samples

Download data: CEL

(Submitter supplied) Fatty acids comprise the primary energy source for the heart and are mainly taken up via hydrolysis of circulating triglyceride-rich lipoproteins. While most of the fatty acids entering the cardiomyocyte are oxidized, a small portion is involved in altering gene transcription to modulate cardiometabolic functions. So far, no in vivo model has been developed enabling study of the transcriptional effects of specific fatty acids in the intact heart. more...

Organism:

Mus musculus

Type:

Expression profiling by array

Platform:

GPL7440

4 Samples

Download data: CEL

(Submitter supplied) Fatty acids comprise the primary energy source for the heart and are mainly taken up via hydrolysis of circulating triglyceride-rich lipoproteins. While most of the fatty acids entering the cardiomyocyte are oxidized, a small portion is involved in altering gene transcription to modulate cardiometabolic functions. So far, no in vivo model has been developed enabling study of the transcriptional effects of specific fatty acids in the intact heart. more...

Organism:

Mus musculus

Type:

Expression profiling by array

Platform:

GPL1261

55 Samples

Download data: CEL

(Submitter supplied) To identify genes whose expression is under the strict dependence of hepatocyte PPARa activity, we used a mouse strain of PPARa-specific deletion in hepatocyte (albumin-Cre+/- Pparaflox/flox or LKO) and we compared them to their liver WT littermates (albumin-Cre-/- Pparaflox/flox or LWT) fed ad libitum or fasted for 24 hours.

Organism:

Mus musculus

Type:

Expression profiling by array

Platform:

GPL21810

24 Samples

Download data: TXT

(Submitter supplied) Peroxisome proliferator-activated receptor alpha (PPARα) is a key regulator of hepatic fat oxidation that serves as an energy source during starvation. Vanin-1 has been described as a putative PPARα target gene in liver, but its function in hepatic lipid metabolism is unknown. We investigated the regulation of vanin-1, and total vanin activity, by PPARα in mice and humans. Furthermore, the function of vanin-1 in the development of hepatic steatosis in response to starvation was examined in Vnn1 deficient mice, and in rats treated with an inhibitor of vanin activity. more...

Organism:

Mus musculus

Type:

Expression profiling by array

Dataset:

GDS4872

Platform:

GPL11533

16 Samples

Download data: CEL

Analysis of liver from vanin-1 KOs fasted for 24 hrs. Vanin-1 is highly expressed in liver compared to other tissues. In the fasted state, liver switches to fatty acid oxidation and glucose production. Results provide insight into the role of vanin-1 in hepatic lipid metabolism during starvation.

Organism:

Mus musculus

Type:

Expression profiling by array, transformed count, 2 genotype/variation, 2 protocol sets

Platform:

GPL11533

Series:

GSE51712

16 Samples

Download data: CEL

(Submitter supplied) This SuperSeries is composed of the SubSeries listed below.

Organism:

Mus musculus

Type:

Expression profiling by array

Platform:

GPL17326

76 Samples

Download data: CEL

(Submitter supplied) Although drug induced steatosis represents a mild type of hepatotoxicity, it can progress into more severe non-alcoholic steatohepatitis. Current models used for safety assessment in drug development and chemical risk assessment do not accurately predict steatosis in humans. Therefore, new models need to be developed to screen compounds for steatogenic properties. We have studied the usefulness of mouse precision-cut liver slices (PCLS) as an alternative to animal testing to gain more insight into the mechanisms involved in the steatogenesis. more...

Organism:

Mus musculus

Type:

Expression profiling by array

Platform:

GPL17326

30 Samples

Download data: CEL

(Submitter supplied) Although drug induced steatosis represents a mild type of hepatotoxicity, it can progress into more severe non-alcoholic steatohepatitis. Current models used for safety assessment in drug development and chemical risk assessment do not accurately predict steatosis in humans. Therefore, new models need to be developed to screen compounds for steatogenic properties. We have studied the usefulness of mouse precision-cut liver slices (PCLS) as an alternative to animal testing to gain more insight into the mechanisms involved in the steatogenesis. more...

Organism:

Mus musculus

Type:

Expression profiling by array

Platform:

GPL17326

23 Samples

Download data: CEL

(Submitter supplied) Although drug induced steatosis represents a mild type of hepatotoxicity, it can progress into more severe non-alcoholic steatohepatitis. Current models used for safety assessment in drug development and chemical risk assessment do not accurately predict steatosis in humans. Therefore, new models need to be developed to screen compounds for steatogenic properties. We have studied the usefulness of mouse precision-cut liver slices (PCLS) as an alternative to animal testing to gain more insight into the mechanisms involved in the steatogenesis. more...

Organism:

Mus musculus

Type:

Expression profiling by array

Platform:

GPL17326

23 Samples

Download data: CEL

(Submitter supplied) Nuclear receptor activation in liver leads to coordinated alteration of the expression of multiple gene products with attendant phenotypic changes of hepatocytes. Peroxisome proliferators including endogenous fatty acids, environmental chemicals, and drugs induce a multi-enzyme metabolic response that affects lipid and fatty acid processing. We studied the signaling network for the peroxisome proliferator-associated receptor alpha (PPARα) in primary human hepatocytes using the selective PPARα ligand, GW7647. more...

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL13158

120 Samples

Download data: CEL

(Submitter supplied) The nuclear receptor PPARalpha is recognized as the primary target of the fibrate class of hypolipidemic drugs and mediates lipid lowering in part by activating a transcriptional cascade that induces genes involved in the catabolism of lipids. We report here the characterization of three novel PPARalpha agonists with therapeutic potential for treating dyslipidemia. These structurally related compounds display potent and selective binding to human PPARalpha and support robust recruitment of coactivator peptides in vitro. more...

Organism:

Mus musculus

Type:

Expression profiling by array

Platform:

GPL81

30 Samples

Download data: CEL

(Submitter supplied) Non-alcoholic steatohepatitis (NASH) is a life-threatening liver disease for which no drug has been approved. We have previously shown that human-derived hepatic in vitro models can be used to mimic key cellular mechanisms involved in the progression of NASH. In the present study, we first assess the predictive capacity of different in vitro models and then investigate how the reduction of NASH-specific parameters upon treatment with elafibranor, a PPAR-α/δ agonist, correlates with clinical NASH-resolution obtained through bariatric surgery. more...

Organism:

Homo sapiens

Type:

Expression profiling by array; Third-party reanalysis

Platform:

GPL570

18 Samples

Download data: CEL, XLS