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GSE39450
Gallus gallus
6 Downloadable Samples
Affymetrix Chicken Genome Array (chicken)
Description
Polycomb group proteins (PcG) are well known by their function in the regulation of developmental processes. PcG mediated regulation of genetic programs required for proper development are triggered by EZH2 H3K27 methyltransferase activity. EZH1 can partially substitute EZH2 activity. However, unlike EZH2, EZH1 is presence in differentiated and adult tissues suggesting additional biological functions. Here we show that EZH2 is predominantly expressed in neural stem cells being essential for neural stem cells self renewal and homeostasis. There, it controls the transcriptional state of cell cycle regulators, such as CIP1. But it is also necessary to regulate genes involved in surveillance and neuroepithelial polarity. In contrast, EZH1 expression is more abundant in differentiated cells within the spinal cord and its downregulation unables neural stem cells to differentiate. All together our data reveal a complementary but non-redundant role of EZH2 and EZH1 in neurogenesis.
Publication Title
EZH2 regulates neuroepithelium structure and neuroblast proliferation by repressing p21.
Sample Metadata Fields
Specimen part
View Samples- Mus musculus
- 7 Downloadable Samples
- Affymetrix Mouse Gene 1.1 ST Array (mogene11st)
Description
Stearoyl-CoA desaturase (SCD) is the rate-limiting enzyme catalyzing the conversion of saturated fatty acids palmitate and stearate to monounsaturated fatty acids palmitoleate and oleate. During adipocyte differentiation, SCD expression increases concomitantly with several transcription factors and lipogenic genes.
Publication Title
Inhibition of stearoyl-CoA desaturase-1 in differentiating 3T3-L1 preadipocytes upregulates elongase 6 and downregulates genes affecting triacylglycerol synthesis.
Sample Metadata Fields
Specimen part, Treatment
View Samples- Mus musculus
- 6 Downloadable Samples
- Affymetrix Mouse Gene 1.0 ST Array (mogene10st)
Description
TCF-1 is an HMG family transcription factor which is known to be activated by the canonical Wnt signaling pathway and modulated by other signals such as those derived from T cell receptor. We found that during CD8 T cell responses, TCF-1 deficiency impaired long-term maintenance of antigen-specific memory CD8 T cells.
Publication Title
Differentiation and persistence of memory CD8(+) T cells depend on T cell factor 1.
Sample Metadata Fields
Specimen part
View Samples- Mus musculus
- 18 Downloadable Samples
- Affymetrix Mouse Gene 1.0 ST Array (mogene10st)
Description
The transcriptome of naive OT-I T cells was compared to memory CD8 T cells after 1, 2, 3, or 4 infection with ovalbumin expressing Listeria monocytogenes (LM-OVA).
Publication Title
Repetitive antigen stimulation induces stepwise transcriptome diversification but preserves a core signature of memory CD8(+) T cell differentiation.
Sample Metadata Fields
Specimen part
View Samples- Mus musculus
- 12 Downloadable Samples
- Affymetrix Mouse Gene 1.0 ST Array (mogene10st)
Description
Memory CD8+ P14 cells were generarted through adoptive transfer and infection with LCMV armstrong. Then, early memory (after 30 - 45 days) and late memory (after 8 months) cells were sort purified based on CD62L expression.
Publication Title
Phenotypic and Functional Alterations in Circulating Memory CD8 T Cells with Time after Primary Infection.
Sample Metadata Fields
Specimen part, Time
View Samples- Mus musculus
- 4 Downloadable Samples
Illumina HiSeq 2000
Description
Comparison of the transcriptome between control Tfh and Tcf1 long isoform-deficient Tfh cells Overall design: SMARTA CD4+ T cells (control or Tcf1 long isoform deficient) were adoptively transferred into B6.SJL recipient mice and then infected with LCMV-Arm. On day 8 after infection, the splenocytes were isolated, and CD45.2+CD4+CXCR5+PD-1 negative cells were sorted as Tfh cells and used in RNAseq analysis.
Publication Title
Differential Requirements for Tcf1 Long Isoforms in CD8<sup>+</sup> and CD4<sup>+</sup> T Cell Responses to Acute Viral Infection.
Sample Metadata Fields
Specimen part, Subject
View Samples- Sus scrofa
- 18 Downloadable Samples
- Affymetrix Porcine Genome Array (porcine)
Description
The majority of babies in the US are formula-fed instead of breast fed. There are major differences in the composition of formulas and breast milk and yet little is known about metabolic differences in babies as the result of feeding these very different diets and how that might affect development or disease risk in later life. One concern is that soy-based formulas might have adverse health effects in babies as a result of the presence of low levels of estrogenic phytochemicals genistein and daidzein which are normally present in soy beans. In the current study, we used a piglet model to look at this question. Piglets were either fed breast milk from the sow or were fed two different infant formulas (cows milk-based or soy-based) from age 2 days to 21 days when pigs are normally weaned onto solid food. Blood glucose and lipids were measured. Formula-fed pigs were found to have lower cholesterol than breast fed piglets and in addition had larger stores of iron in their liver.Microarray analysis was carried out to see if changes in liver gene expression could explain these effects of formula feeding. It was found that overall gene expression profiles were influenced by formula feeding compared to breast fed neonates. Gender-independent and unique effects of formula influenced cholesterol and iron metabolism. Further, soy formula feeding in comparison to milk-based formula failed to reveal any estrogenic actions on hepatic gene expression in either male or female pigs.
Publication Title
Formula feeding alters hepatic gene expression signature, iron and cholesterol homeostasis in the neonatal pig.
Sample Metadata Fields
Sex
View Samples- Homo sapiens
- 22 Downloadable Samples
- Affymetrix Human Gene 2.1 ST Array (hugene21st)
Description
Obesity is a heterogeneous conditions comprising obese individuals with metabolic disorders (termed metabolically unhealthy obese; MUO) and obese individuals who are metabolically healthy (termed metabolically healthy obese; MHO).
Publication Title
Serum and adipose tissue amino acid homeostasis in the metabolically healthy obese.
Sample Metadata Fields
Specimen part, Disease, Disease stage
View Samples- Homo sapiens
- 4 Downloadable Samples
- Affymetrix Human Genome U133 Plus 2.0 Array (hgu133plus2)
Description
Gene expression profiles in synovial biopsies from patients with rheumatoid arthritis (RA) display a high level of plasticity related to disease activity and response to therapy.
Publication Title
Higher expression of TNFα-induced genes in the synovium of patients with early rheumatoid arthritis correlates with disease activity, and predicts absence of response to first line therapy.
Sample Metadata Fields
Sex, Age, Disease
View Samples- Mus musculus
- 6 Downloadable Samples
- Illumina HiSeq 2500
Description
Our experiments aimed to investigate the landscape of enhancers and super-enhancers in naïve, effector and memory CD8+ T cells. Here we mapped four histone modification marks and gene expression in naive, effector, and memory cells after viral infection. Our results suggest that the chromatin environment at regulatory DNA sequences in TCM is more permissive than in TN and TE. We further predicted the enhancers and their targets, and constructed transcriptional regulatory networks (TRNs) in three T cell stages. We have identified a highly dynamic repertoire of the enhancers and their targets during CD8 T cell responses, as 77% of the enhancers and 82% of the enhancer-promoter interactions are stage-specific. Our results suggest the dynamic change of enhancer activity during cell stage transition leads to TRN rewiring, which explains the expression change of the key factors of T cell function. Overall design: We performed ChIP-Seq for 4 histone modification markers and RNA-Seq experiments in three CD8+ T cell differentiation stages.
Publication Title
CD8<sup>+</sup> T Cells Utilize Highly Dynamic Enhancer Repertoires and Regulatory Circuitry in Response to Infections.
Sample Metadata Fields
Cell line, Subject
View Samples