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GSE9484
Mus musculus
11 Downloadable Samples
Affymetrix Mouse Genome 430A 2.0 Array (mouse430a2)
Description
In contrast to the well-established role of oxidative muscle fibers in regulating fatty acid oxidation and whole body metabolism, little is known that about the function of fast/glycolytic muscle fibers in these processes. Here, we generated a skeletal muscle-specific, conditional transgenic mouse expressing a constitutively-active form of Akt1. Transgene activation led to muscle hypertrophy due to the growth of type IIb muscle fibers, which was accompanied by an increase in strength. These mice were then used to assess the consequence of building fast/glycolytic muscle fibers on adiposity and metabolism. Akt1 transgene induction in obese mice resulted in reductions in body weight and fat mass, a resolution of hepatic steatosis and improved metabolic parameters. These effects were achieved independent of changes in physical activity and levels of food consumption. Akt1-mediated skeletal muscle growth opposed the effects of high fat/sucrose diet on transcript expression patterns in the liver, and increased hepatic fatty acid oxidation and ketone body production. Our findings indicate that an increase in fast/glycolytic muscle mass can result in the regression of obesity and obesity-related metabolic disorders in part through its ability to alter fatty acid metabolism in remote tissues.
Publication Title
Fast/Glycolytic muscle fiber growth reduces fat mass and improves metabolic parameters in obese mice.
Sample Metadata Fields
Sex, Specimen part, Treatment
View Samples- Homo sapiens
- 2 Downloadable Samples
- Affymetrix Human Genome U133 Plus 2.0 Array (hgu133plus2)
Description
Histone lysine demethylase KDM4A is overexpressed in prostate cancer and plays a crucial role in tumor growth and survival. To understand the mechanisms underlying KDM4A-depedent cell growth and survival, microarray analysis was performed in LNCaP cells transduced with control or KDM4A specific-knockdown construct. The role of KDM4A in prostate carcinogenesis involves activation of E2F1 and androgen receptor transcriptional profiles.
Publication Title
KDM4A Coactivates E2F1 to Regulate the PDK-Dependent Metabolic Switch between Mitochondrial Oxidation and Glycolysis.
Sample Metadata Fields
Cell line
View Samples- Rattus norvegicus
- 10 Downloadable Samples
- Affymetrix Rat Genome 230 2.0 Array (rat2302)
Description
An iron chelate, ferric nitrilotriacetate (Fe-NTA), induces oxidative renal tubular damage that subsequently leads to renal cell carcinoma in rodents. Here we used gene expression microarrays to find target oncogenes in this model. Network analysis of the gene expression microarray data revealed the involvement of beta-catenin pathway in the induced cancers.
Publication Title
Chronic oxidative stress causes amplification and overexpression of ptprz1 protein tyrosine phosphatase to activate beta-catenin pathway.
Sample Metadata Fields
No sample metadata fields
View Samples- Danio rerio
- 43 Downloadable Samples
IlluminaHiSeq2000
Description
microRNAs (miRNAs) are typically generated as ~22-nucleotide double-stranded RNAs via processing of precursor hairpins by the RNase III enzyme Dicer, after which they are loaded into Argonaute (Ago) proteins to form RNA-induced silencing complex (RISC). However, the biogenesis of miR-451, an erythropoietic miRNA conserved in vertebrates, does not require Dicer processing. Instead, the short pre-miR-451 precursor hairpin is directly loaded into Ago, followed by cleavage of the 3'' arm and trimming of the 3'' end to the mature length by PARN. Here we show the in vivo activity of miR-430 Ago2-hairpin, a canonical microRNA engineered to fit the structure of miR-451 and hence become Ago2-dependent. Moreover, we test a modified miR-430 Ago2-haipin with 3x phoshorothioate bonds that impairs trimmng. Surprisingly, our data show that trimming of Ago-cleaved pre-miRNAs is not essential for target silencing, indicating that RISC is functional with miRNAs longer than 22-nucleotides. Overall design: Rescue of MZdicer zebrafish mutant with the injection of trimmable and nontrimmable miR-430 Ago2 hairpins: Transcriptome of wild type, MZdicer mutant, and MZdicer mutant micoinjected with miR-430 duplex, miR-430 (Ago2-haripin), miR-430 (Ago2-haripin 3xPhosphorothioate)
Publication Title
Poly(A)-specific ribonuclease mediates 3'-end trimming of Argonaute2-cleaved precursor microRNAs.
Sample Metadata Fields
No sample metadata fields
View Samples- Rattus norvegicus
- 12 Downloadable Samples
- Affymetrix Rat Genome 230 2.0 Array (rat2302)
Description
Wakame is an edible seaweed that is a common constituent in the Japanese diet. Previous studies showed that wakame consumption is associated with prevention of metabolic syndrome; however, the molecular mechanisms of this protective effect are poorly understood. To determine if the expression of hepatic genes is affected by the ingestion of brown seaweed, Undaria pinnatifida (wakame), rats were fed diets containing 0, 0.1, or 1.0 g/100 g dried wakame powder for 28 days. Administration of 1% wakame significantly decreased total serum total cholesterol levels. Hepatic gene expression was investigated using DNA microarray analysis. Microarray analysis showed that wakame suppresses the lipogenic pathway by downregulating SREBF-1. Moreover, bile acid biosynthesis and gluconeogenesis are promoted by upregulation of the PPAR signaling pathway, which leads to a reduction in the accumulation of cholesterol and promotion of -oxidation. These results provide useful genetic information about various biochemical processes by which wakame regulates energy metabolism.
Publication Title
Oral Administration of Edible Seaweed Undaria Pinnatifida (Wakame) Modifies Glucose and Lipid Metabolism in Rats: A DNA Microarray Analysis.
Sample Metadata Fields
Sex, Age, Specimen part
View Samples- Drosophila melanogaster
- 7 Downloadable Samples
- Illumina Genome Analyzer IIx, Illumina HiSeq 2000
Description
piRNA 1U does not cause the secondary piRNA 10A
Publication Title
The initial uridine of primary piRNAs does not create the tenth adenine that Is the hallmark of secondary piRNAs.
Sample Metadata Fields
Sex, Specimen part, Cell line, Treatment
View Samples- Homo sapiens
- 5 Downloadable Samples
- Affymetrix Human Genome U133 Plus 2.0 Array (hgu133plus2)
Description
BAG3 (BCL2-associated athanogene 3) is a member of the BAG protein family. BAG3 affects a wide variety of cellular events including cell proliferation, apoptosis and autophagy. Recently our data demonstrated that knockout (KO) of BAG3 induces the cell growth arrest in human cervical carcinoma HeLa cells.
Publication Title
Identification of genes and genetic networks associated with BAG3‑dependent cell proliferation and cell survival in human cervical cancer HeLa cells.
Sample Metadata Fields
Cell line
View Samples- Mus musculus
- 8 Downloadable Samples
- Affymetrix Mouse Genome 430 2.0 Array (mouse4302)
Description
Screening for genes regulated by Etv2 within Flk-1+/PDGFRa+ ES derived mesoderm.Microarray analysis performed to screen for the candidate genes regulated by Etv2. TT2 ES cells differentiated on OP9 feeder cells were sorted using Flk-1 and PDGFRa antibodies.Gene expressions from these two populations were compared.
Publication Title
Etv2/ER71 induces vascular mesoderm from Flk1+PDGFRα+ primitive mesoderm.
Sample Metadata Fields
Cell line
View Samples- Mus musculus
- 4 Downloadable Samples
- Affymetrix Mouse Genome 430 2.0 Array (mouse4302)
Description
Screening for genes up in Etv2+ cells within Flk-1+ ES derived mesoderm
Publication Title
Etv2/ER71 induces vascular mesoderm from Flk1+PDGFRα+ primitive mesoderm.
Sample Metadata Fields
Cell line
View Samples- Mus musculus
- 15 Downloadable Samples
- Affymetrix Mouse Genome 430 2.0 Array (mouse4302)
Description
To elucidate the bioactive property of the dietary antioxidant curcumin, we examined tissue distribution and the gene expression- and lipidomic-profiles in epididymal white adipose tissue (eWAT) of the diet-induced obese mice. Dietary intake of curcumin (0.1% W/W) didnt affect the eWAT weight and the plasma lipid levels but reduced the levels of lipid peroxidation marker in eWAT. Curcumin was a slightly accumulated in eWAT and altered the gene expression associated with eukaryotic translation initiation factor 2 (EIF2) signaling. Curcumin suppressed the endoplasmic reticulum (ER) stress-related eIF2 phospholyration, the accumulation of macrophages and the expression of oxidative stress-sensitive transcription factor NF-B p65 and leptin, whereas anti-inflammatory effect wasnt enough to reduce the TNF- and IFN- levels. Lipidomic- and gene expression analysis suggests that curcumin reduced the contents of some diacylglyverols (DAGs) and DAG derived glycerophospholipids by suppressing the expressions of lipogenesis-related glycerol-3-phosphate acyltransferase 1 and lipolysis-related adipose triglyceride lipase.
Publication Title
Dietary Intake of Curcumin Improves eIF2 Signaling and Reduces Lipid Levels in the White Adipose Tissue of Obese Mice.
Sample Metadata Fields
Sex, Specimen part
View Samples