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GSE50019
Arabidopsis thaliana
34 Downloadable Samples
Affymetrix Arabidopsis ATH1 Genome Array (ath1121501)
Description
Innate immune responses of plant cells confer the first line of defence against pathogens. Signals generated by activated receptors are integrated inside the cell and converge on transcriptional programmes in the nucleus. The Arabidopsis Toll-related intracellular receptor RPS4 operates inside nuclei to trigger resistance to Pseudomonas bacteria expressing AvrRps4 and defence gene reprogramming through the stress response regulator, EDS1.
Publication Title
Arabidopsis TNL-WRKY domain receptor RRS1 contributes to temperature-conditioned RPS4 auto-immunity.
Sample Metadata Fields
Specimen part
View Samples- Homo sapiens
- 9 Downloadable Samples
- Affymetrix Human Genome U133 Plus 2.0 Array (hgu133plus2)
Description
We found that 5-Aza-dC/decitabine induces various prosurvival pathways (JAK-STAT-, NFkB-, MEK/ERK- and PI3K/AKTpathway) in cHL cell lines. Inhibition of these pathways with specific small molecular weight inhibitors potentiates the antitumor effect of 5-Aza-dC.
Publication Title
Activation of oncogenic pathways in classical Hodgkin lymphoma by decitabine: A rationale for combination with small molecular weight inhibitors.
Sample Metadata Fields
Cell line
View Samples- Homo sapiens
- 5 Downloadable Samples
- Affymetrix Human Genome U133 Plus 2.0 Array (hgu133plus2)
Description
Abstract.
Publication Title
The IKK2/NF-{kappa}B pathway suppresses MYC-induced lymphomagenesis.
Sample Metadata Fields
Specimen part
View Samples- Homo sapiens
- 6 Downloadable Samples
- Affymetrix Human Genome U133A Array (hgu133a)
Description
We compared gene expression profiles of a human CD4+ T-cell line 24 h after infection with a cell line of the same origin permanently releasing SIVmac251/32H. A new knowledge-based-network approach (Inter-Chain-Finder) was used to identify subnetworks leading to resistance to SIV-induced cell death. Notably, the method can identify not only differentially-expressed key hub genes but also non-differentially expressed, critical, hidden regulators.
Publication Title
Identification of molecular sub-networks associated with cell survival in a chronically SIVmac-infected human CD4+ T cell line.
Sample Metadata Fields
Disease, Disease stage
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- Homo sapiens
- 8 Downloadable Samples
- Affymetrix Human Gene 1.0 ST Array (hugene10st)
Description
Characteristic extinguishing of B-cell phenotype in cHL is believed to be a result of transcription factor network deregulation due to the overexpression of repressor proteins ID2 and ABF-1. KLF4 is a versatile transcription factor, participating in regulation of differentiation processes in various tissues. Epigenetic silencing of KLF4 in cHL hints that KLF4 is involved in the complex mechanism of extinguishing of B-cell phenotype in cHL.
Publication Title
KLF4 is a tumor suppressor in B-cell non-Hodgkin lymphoma and in classic Hodgkin lymphoma.
Sample Metadata Fields
Specimen part, Cell line, Treatment
View Samples- Mus musculus
- 14 Downloadable Samples
- Affymetrix Mouse Gene 1.0 ST Array (mogene10st)
Description
Canonical IKK/NF-B signaling is a master regulator of inflammation and innate immunity and has been implicated in the pathogenesis of T1D. To investigate the impact of NF-B activation on -cell homeostasis and diabetes development, we generated a transgenic gain-of-function mouse model allowing conditional NF-B activation via expression of IKK2-CA (constitutively active IKK2 allele) in -cells using the tetracycline-regulated gene expression system. Pdx-1-tTA (knockin model generating Pdx-1 haploinsufficiency) driver mice were used for -cell specific transgene expression. Double transgenic IKK2-CA-pdx-1 mice develop a full-blown immune-mediated diabetes.To identify gene expression changes underlying this diabetes development pancreatic islets of diabetic IKK2-CA-Pdx-1, PDX-1 +/- and control mice were prepared and isolated total RNA was used for microarray analysis.
Publication Title
Long-term IKK2/NF-κB signaling in pancreatic β-cells induces immune-mediated diabetes.
Sample Metadata Fields
Specimen part
View Samples- Mus musculus, Homo sapiens
- 6 Downloadable Samples
- Affymetrix Human Genome U133 Plus 2.0 Array (hgu133plus2)
Description
This SuperSeries is composed of the SubSeries listed below.
Publication Title
MYC stimulates EZH2 expression by repression of its negative regulator miR-26a.
Sample Metadata Fields
Specimen part
View Samples- Homo sapiens
- 6 Downloadable Samples
- Affymetrix Human Genome U133 Plus 2.0 Array (hgu133plus2)
Description
The MYC oncogene, which is commonly mutated/amplified in tumors, represents an important regulator of cell growth owing to its ability to induce both proliferation and apoptosis. Recent evidence links MYC to altered miRNA expression, thereby suggesting that MYC-regulated miRNAs might contribute to tumorigenesis. To further analyze the impact of MYC-regulated miRNAs we investigated a murine lymphoma model harboring the MYC transgene in a Tet-off system in order to control its expression. Microarray-based miRNA expression profiling revealed both known and novel MYC targets. Among the miRNAs repressed by MYC we identified the potential tumor suppressor miR-26a, which possessed the ability to attenuate proliferation in MYC-dependent cells. Interestingly, miR-26a was also found to be deregulated in primary human Burkitt lymphoma samples, thereby likely being of clinical relevance. While today only few miRNA targets have been identified in human disease, we could show that ectopic expression of miR-26a influenced cell cycle progression by targeting the bona fide oncogene EZH2, a Polycomb protein and global regulator of gene expression yet unknown to be regulated by miRNAs. Thus, in addition to directly targeting protein-coding genes, MYC modulates genes important to oncogenesis via deregulation of miRNAs, thereby vitally contributing to MYC-induced lymphomagenesis.
Publication Title
MYC stimulates EZH2 expression by repression of its negative regulator miR-26a.
Sample Metadata Fields
No sample metadata fields
View Samples- Mus musculus
- 6 Downloadable Samples
- Affymetrix Mouse Gene 1.0 ST Array (mogene10st)
Description
Chronic lymphocytic leukemia (CLL) is a disorder of mature B cells. Most patients are characterized by indolent disease and an anergic phenotype of their leukemia cells which refers to a state of unresponsiveness to B cell receptor stimulation. Using the E-TCL1 mouse model, we show that B cell-specific ablation of NFAT2 leads to the loss of the anergic phenotype culminating in a significantly compromised life expectancy and histological transformation to aggressive disease. We further define a gene expression signature of anergic CLL cells consisting of several NFAT2-dependant genes employing microarray technology.
Publication Title
NFAT2 is a critical regulator of the anergic phenotype in chronic lymphocytic leukaemia.
Sample Metadata Fields
Age, Specimen part
View Samples