TWEAK/Fn14 signaling may regulate the expression of genes involved in epithelial repair and mucosal inflammation. Comparing the gene signatures in WT and TWEAK KO mice will inform the biology of TWEAK/Fn14 pathway in the GI tract.
Interleukin-13 damages intestinal mucosa via TWEAK and Fn14 in mice-a pathway associated with ulcerative colitis.
Specimen part, Treatment
View SamplesWe microdissected each compartment from 6-micron paraffin sections using the Leica AS LMD system to identify all genes active in different compartments of a soybean seed containing globular-stage embryos.
Using genomics to study legume seed development.
No sample metadata fields
View SamplesHuR-deficient cells showed the decreased expression of genes involved in chemotaxis, cell proliferation and signal transduction.
Hu Antigen R Regulates Antiviral Innate Immune Responses through the Stabilization of mRNA for Polo-like Kinase 2.
Specimen part, Cell line
View SamplesOral food intake maintains gastrointestinal cell turnover and impacts the morphology and function of intestinal epithelial cells. However, the underlying mechanism is not fully elucidated, especially in the large intestine. Therefore, we analyzed the colonic epithelial cell turnover in starved and re-fed mice.
Microbiota-derived lactate accelerates colon epithelial cell turnover in starvation-refed mice.
Sex, Age, Specimen part, Treatment
View SamplesThis file contains gene microarray data from FACS purified mouse high endothelial cells and capillary endothelial cells from peripheral lymph nodes, mesenteric lymph nodes, and Peyers patches. The data will allow for better understanding of the specialization of high endothelial venules (HEV) and their role in lymphocyte recruitment from the blood; the tissue-specific differentiation of lymphoid tissue vasculature; and the specialized features of capillary vs. post-capillary endothelium, including differences in signaling pathways, adhesive properties and mechanisms of hemostasis.
Transcriptional programs of lymphoid tissue capillary and high endothelium reveal control mechanisms for lymphocyte homing.
Specimen part
View SamplesKlf5 has essential functions during early embryogenesis and in the derivation of ES cells from inner-cell mass of blastocyst. Among Kruppel-like factor (Klf) family members, only Klf5 shows peri-implantation lethal phenotype, but the precise mechanisms still remain unknown. To understand and identify molecular mechanisms, we performed microarray analysis by using E3.0 WT and Klf5 KO embryos when first phenotype of Klf5 deficiency appears.
<i>Klf5</i> maintains the balance of primitive endoderm versus epiblast specification during mouse embryonic development by suppression of <i>Fgf4</i>.
Specimen part
View SamplesHOX genes encode a family of homeodomain-containing transcription factors involved in the determination of cell fate and identity during embryonic development. They also behave as oncogenes in some malignancies. In this study, we found high expression of the HOXD9 gene transcript in glioma cell lines and human glioma tissues by quantitative real-time PCR. Using immunocytochemistry, we observed HOXD9 protein expression in human brain tumor tissues, including astrocytomas and glioblastomas. To investigate the role of HOXD9 in gliomas, we silenced its expression in the glioma cell line U87 using HOXD9-specific siRNA, and observed decreased cell proliferation, cell cycle arrest, and induction of apoptosis. It was suggested that HOXD9 contributes to both cell proliferation and/or cell survival. The HOXD9 gene was highly expressed in a side population (SP) of SK-MG-1 cells that was previously identified as an enriched-cell fraction of glioma cancer stem-like cells. HOXD9 siRNA treatment of SK-MG-1 SP cells resulted in reduced cell proliferation. Finally, we cultured human glioma cancer stem cells (GCSCs) from patient specimens found with high expression of HOXD9 in GCSCs compared with normal astrocyte cells and neural stem/progenitor cells (NSPCs). Our results suggest that HOXD9 may be a novel marker of GCSCs and cell proliferation and/or survival factor in gliomas and glioma cancer stem-like cells, and a potential therapeutic target.
Functional analysis of HOXD9 in human gliomas and glioma cancer stem cells.
Cell line
View SamplesConsumption of a protein containing meal by a fasted animal promotes protein accretion in skeletal muscle, in part through leucine stimulation of protein synthesis and indirectly through repression of protein degradation mediated by its metabolite, a-ketoisocaproate. Mice lacking the mitochondrial branched-chain aminotransferase (BCATm/Bcat2), that interconverts leucine and a-ketoisocaproate, exhibit elevated protein turnover. Here, the transcriptomes of gastrocnemius muscle from BCATm knockout (KO) and wildtype mice were compared using Next Generation RNA-Sequencing (RNA-Seq) to identify potential adaptations associated with their persistently altered nutrient signaling. Statistically significant changes in the abundance of 1486/~39,010 genes were identified. Bioinformatics analysis of the RNA-Seq data indicated that pathways involved in protein synthesis (eIF2, mTOR, eIF4 and p70S6K pathways including 40S and 60S ribosomal proteins), protein breakdown (e.g., ubiquitin mediated), and muscle degeneration (apoptosis, atrophy, myopathy and cell death) were up-regulated. Also in agreement with our previous observations, the abundance of mRNAs associated with reduced body size, glycemia, plasma insulin, and lipid signaling pathways were observed in BCATm KO mice. Consistently, genes encoding anaerobic and/or oxidative metabolism of carbohydrate, fatty acids and BCAAs were modestly but systematically reduced. Although there was no indication that muscle fiber type was different between KO and wildtype mice, a difference in the abundance of mRNAs associated with a muscular dystrophy phenotype was observed, consistent with the published exercise intolerance of these mice. The results suggest transcriptional adaptations occur in BCATm KO mice that along with altered nutrient signaling may contribute to their previously reported protein turnover, metabolic and exercise phenotypes. Overall design: Comparison of wildtype and BCATm KO gastrocnemius biological replicates
Global deletion of BCATm increases expression of skeletal muscle genes associated with protein turnover.
No sample metadata fields
View SamplesA dataset for coordinated transcriptome analysis of the effect of ethanol on human embryonic cerebral slices in vitro and on the mouse embryonic cerebral cortex in a in vivo model.
Combined transcriptome analysis of fetal human and mouse cerebral cortex exposed to alcohol.
Time
View SamplesThe purpose of this study was to examined the acute actions of the second generation antipsychotic (SGA), olanzapine, on skeletal muscle (gastrocnemius) of Sprague Dawley Rats. SGAs cause metabolic side effects including leading to metabolic inflexibility, hyperglycemia, adiposity and diabetes. These effects are preceded by glucose intolerance and increased FFA flux and metabolism in peripheral tissues. Skeletal muscle is a likely target of glucose intolerance, therefore understanding how olanzapine affects the skeletal muscle transcriptome could elucidate approaches for mitigating these side effects. Male Sprague-Dawley rats freely fed on normal chow with comparable body weights (vehicle: 373±9g, olanzapine: 388±11g, p=0.34) were infused with vehicle or olanzapine for 24h using a dosing regimen leading to mild hyperglycemia (vehicle, 98±2mg/dl; olanzapine 127±4mg/dl, p=0.0023). For the olanzapine group, the venous catheter was attached to a syringe pump (Model NE-300) filled with olanzapine (Dr. Reddy’s Laboratories Ltd, Hyderabad, India) in sterile saline (infusion: 1mg/100g BW loading dose for 0.5h and then 0.04mg/100g/h continuously for 23.5h). Gastrocnemius was then surgically removed under isoflurane anesthesia (carried with 100% O2), and frozen between two aluminum blocks cooled to the temperature of liquid nitrogen and then stored at -80oC until RNA was isolated. With anesthesia gas flow continuing, the animals were euthanized by cutting the diaphram and removing the heart. The mRNA was isolated from from these muscles and used for RNA-Seq followed by alignment of the data with the rat genome assembly 5.0. To determine significant differences in FPKM values between control and olanzapine groups, the DEGexp function of the DEGseq 1.18.0 R package was used with the Likelihood Ratio Test (LRT) and default parameters. In the uploaded excel file, P values with p<0.05 and p<0.001 are shown for each row in different columns indicated by the number 1. The value 0 indicates the row is not significantly different. Overall design: Comparison of vehicle (n=3) and olanzapine infused (n=3) rats.
RNA sequencing reveals a slow to fast muscle fiber type transition after olanzapine infusion in rats.
No sample metadata fields
View Samples