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Homo sapiens
38 Downloadable Samples
Affymetrix Human Genome U133A Array (hgu133a)
Description
CD25+ regulatory T cells develop in the thymus (nTregs), but may also be generated in the periphery upon stimulation of naive CD4 T cells under appropriate conditions (iTregs). The mechanisms that regulate the generation of peripheral iTregs are largely unknown.
Publication Title
Analysis of the transcriptional program of developing induced regulatory T cells.
Sample Metadata Fields
Specimen part, Treatment, Subject, Time
View Samples- Mus musculus
- 2 Downloadable Samples
- Affymetrix Mouse Genome 430A 2.0 Array (mouse430a2)
Description
In this experiment, total RNA was extracted from asynchronous population of L1210 cells and hybridized to Affymetrix 430A 2.0 arrays in order to obtain an expression profile of these cells. We have previously mapped the replication timing of the entire mouse genome in this cell line, using mouse CGH arrays (see E-MEXP-1022). We wanted to validate in our system the known correlation between early replication and expression and to analyze its extent. To this end, we have measured the expression in the same cell line (L1210 cells). Two biological replicates were hybridized to 2 identical microarrays. Expression levels were highly similar between the 2 replicates (r=0.98).
Publication Title
Global organization of replication time zones of the mouse genome.
Sample Metadata Fields
Cell line, Subject
View Samples- Mus musculus
- 44 Downloadable Samples
- Affymetrix Mouse Genome 430A 2.0 Array (mouse430a2)
Description
Cardiac structural changes associated with dilated cardiomyopathy (DCM) include cardiomyocyte hypertrophy and myocardial fibrosis. Connective Tissue Growth Factor (CTGF) has been associated with tissue remodeling and is highly expressed in failing hearts. To test if inhibition of CTGF would alter the course of cardiac remodeling and preserve cardiac function in the protein kinase C (PKC) mouse model of DCM. Transgenic mice expressing constitutively active PKC in cardiomyocytes develop cardiac dysfunction that was evident by 3 months of age, and that progressed to heart failure, cardiac fibrosis, and increased mortality. Beginning at 3 months of age, mice were treated with an antibody to CTGF (FG-3149) or non-immune IgG control antibody for an additional 3 months. CTGF inhibition significantly improved left ventricular (LV) systolic and diastolic function in PKC mice, and slowed the progression of LV dilatation. Using gene arrays and quantitative PCR, the expression of many genes associated with tissue remodeling were elevated in PKC mice, but significantly decreased by CTGF inhibition, however total collagen deposition was not attenuated. The observation of significantly improved LV function by CTGF inhibition in PKC mice suggests that CTGF inhibition may benefit patients with DCM.
Publication Title
Connective tissue growth factor regulates cardiac function and tissue remodeling in a mouse model of dilated cardiomyopathy.
Sample Metadata Fields
Sex, Specimen part, Treatment
View Samples- Mus musculus
- 23 Downloadable Samples
- Illumina MouseRef-8 v2.0 expression beadchip
Description
Basic helix loop helix enhancer 40 (Bhlhe40) is a transcription factor expressed in rodent hippocampus, however, its role in neuronal function is not well understood. Here, we used Bhlhe40 null mice on a congenic C57Bl6/J background (Bhlhe40 KO) to investigate the impact of Bhlhe40 on neuronal excitability and synaptic plasticity. A whole genome expression array predicted that Bhlhe40 KO mice have up-regulated insulin-related pathways and down-regulated neuronal signaling-related pathways in the hippocampus. We validated that insulin degrading enzyme mRNA (Ide) and IDE protein are significantly downregulated in Bhlhe40 KO hippocampi. No significant difference was observed in hippocampal insulin levels. In hippocampal slices, we found CA1 neurons have increased miniature excitatory post-synaptic current (mEPSC) amplitude and decreased inhibitory post-synaptic current (IPSC) amplitude, indicating hyper-excitability in CA1 neurons in Bhlhe40 KO mice. At CA1 synapses, we found a reduction in long term potentiation (LTP) and long term depression (LTD), indicating an impairment in hippocampal synaptic plasticity in Bhlhe40 KO hippocampal slices. Bhlhe40 KO mice displayed no difference in seizure response to the convulsant kainic acid (KA) relative to controls. We found that while Bhlhe40 KO mice have decreased exploratory behavior they do not display alterations in spatial learning and memory. Together this suggests that Bhlhe40 plays a role in modulating neuronal excitability and synaptic plasticity ex vivo, however, Bhlhe40 alone does not play a significant role in seizure susceptibility and learning and memory in vivo. In addition, based on the reduction in IDE protein levels in these mice, there may be dysregulation of other known IDE substrates, namely insulin growth factor (Igf)-1, Igf-2, and Amyloid beta (A).
Publication Title
Mice lacking the transcriptional regulator Bhlhe40 have enhanced neuronal excitability and impaired synaptic plasticity in the hippocampus.
Sample Metadata Fields
Sex, Specimen part
View Samples- Mus musculus, Homo sapiens
- 36 Downloadable Samples
Affymetrix Human Genome U133 Plus 2.0 Array (hgu133plus2)
Description
This SuperSeries is composed of the SubSeries listed below.
Publication Title
CD28-inducible transcription factor DEC1 is required for efficient autoreactive CD4+ T cell response.
Sample Metadata Fields
Specimen part, Treatment
View Samples- Homo sapiens
- 21 Downloadable Samples
- Affymetrix Human Genome U133 Plus 2.0 Array (hgu133plus2)
Description
We used microarrays to detail the global gene transcription underlying T cells activation during the first 24 hours after stimulation.
Publication Title
CD28-inducible transcription factor DEC1 is required for efficient autoreactive CD4+ T cell response.
Sample Metadata Fields
Specimen part, Treatment
View Samples- Mus musculus
- 15 Downloadable Samples
- Affymetrix Human Genome U133 Plus 2.0 Array (hgu133plus2)
Description
We used microarrays to detail the global gene transcription effect of Dec1 underlying T cells activation during the first 24 hours after stimulation.
Publication Title
CD28-inducible transcription factor DEC1 is required for efficient autoreactive CD4+ T cell response.
Sample Metadata Fields
Specimen part, Treatment
View Samples- Homo sapiens
- 14 Downloadable Samples
- Affymetrix Human Genome U133A Array (hgu133a)
Description
B cells from human tonsil and blood were sorted using flow cytometry. The human samples were processed immediately ex-vivo using markers for known B cell subsets.
Publication Title
Analysis of somatic hypermutation in X-linked hyper-IgM syndrome shows specific deficiencies in mutational targeting.
Sample Metadata Fields
No sample metadata fields
View Samples
GSE12366- Homo sapiens
- 10 Downloadable Samples
- Affymetrix Human Genome U133 Plus 2.0 Array (hgu133plus2)
Description
Sorted B cells using flow cytometry
Publication Title
Analysis of somatic hypermutation in X-linked hyper-IgM syndrome shows specific deficiencies in mutational targeting.
Sample Metadata Fields
No sample metadata fields
View Samples- Mus musculus
- 24 Downloadable Samples
- Affymetrix Mouse Genome 430 2.0 Array (mouse4302)
Description
The purpose was to determine AcP- and AcPb-dependent gene responses to IL-1 by virally-reconstituting AcP-deficient mouse embryonic cortical neurons with CD25 (control), full length AcP, AcPb or the combination of both. A control population was transduced with a CD25-expressing virus. Half the samples were stimulated with IL-1-beta for four hours, RNA was analyzed by microarray.
Publication Title
A central nervous system-restricted isoform of the interleukin-1 receptor accessory protein modulates neuronal responses to interleukin-1.
Sample Metadata Fields
Specimen part
View Samples