Flaviviruses, particularly Japanese encephalitis virus (JEV) and West Nile virus (WNV), are important causes of virus-induced central nervous system (CNS) disease in humans. We used microarray analysis to identify cellular genes that are differentially regulated following infection of the brain with JEV (P3) or WNV (New York 99). Gene expression data for these flaviviruses was compared to that induced following infection of the brain with reovirus (Type 3 Dearing), an unrelated neurotropic virus. Although several studies have described gene expression changes following virus infection of the brain, this report is the first to directly compare large-scale gene expression data from different viruses. We found that a large number of genes were up-regulated in common to infections with all 3 viruses (fold change > 2, P < 0.001), including genes associated with interferon signaling, the immune system, inflammation and cell death/survival signaling. In addition, genes associated with glutamate signaling were down-regulated in common to infections with all 3 viruses (fold change > 2, P < 0.001). These genes may serve broad spectrum therapeutic targets for virus-induced CNS disease. A distinct set of genes were up-regulated following flavivirus-infection, but not following infection with reovirus. These genes were associated with tRNA charging and may serve as therapeutic targets for flavivirus-induce CNS disease.
Virus-induced transcriptional changes in the brain include the differential expression of genes associated with interferon, apoptosis, interleukin 17 receptor A, and glutamate signaling as well as flavivirus-specific upregulation of tRNA synthetases.
Specimen part, Treatment
View SamplesHead and neck cancer is a hetergeneous disease. Based on previoulsy defined molecular subtypes we associated gene expression with response to different compounds. We used microarry gene expression for molecular subtyping
Basal subtype is predictive for response to cetuximab treatment in patient-derived xenografts of squamous cell head and neck cancer.
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View SamplesA characteristic feature of anaplastic large cell lymphoma (ALCL) is the significant reduction of the T-cell expression program despite its T-cell origin, a finding very similar to the loss of B-cell identity of classical Hodgkin lymphoma (cHL). Previously we demonstrated that epigenetic mechanisms are active in cHL to induce this peculiar phenotype. The results show that combined DNA demethylation and histone acetylation of T-cell lines induce an almost complete extinction of the T-cell phenotype, including the down-regulation of essential T-cell receptor signalling pathway genes such as CD3, LCK and ZAP70, as well as an up-regulation of ALCL-characteristic genes. In contrast, combined DNA demethylation and histone acetylation of ALCL cells is not able to reconstitute their T-cell phenotype. This clearly demonstrates that similar epigenetic mechanisms are active in ALCL and cHL which are responsible for the extinction of their cell type characteristic phenotype.
Histone acetylation and DNA demethylation of T cells result in an anaplastic large cell lymphoma-like phenotype.
Specimen part, Cell line, Treatment
View SamplesGene expression is tightly linked to histone acetylation on lysine residues that can be recognized by bromodomains. The testis-specific bromodomain protein tBRD-1 is essential for male fertility and might act as a co-factor of testis-specifc TAFs. Here, we perform microarray analyses and demonstrate that tBRD-1 selectively controls gene expression in male germ cells
tBRD-1 selectively controls gene activity in the Drosophila testis and interacts with two new members of the bromodomain and extra-terminal (BET) family.
Specimen part
View SamplesThis SuperSeries is composed of the SubSeries listed below.
Classical Hodgkin's lymphoma shows epigenetic features of abortive plasma cell differentiation.
Specimen part, Cell line, Treatment
View SamplesBackground
Classical Hodgkin's lymphoma shows epigenetic features of abortive plasma cell differentiation.
Specimen part, Cell line, Treatment
View SamplesBackground
Classical Hodgkin's lymphoma shows epigenetic features of abortive plasma cell differentiation.
Specimen part, Cell line
View SamplesBackground
Classical Hodgkin's lymphoma shows epigenetic features of abortive plasma cell differentiation.
Specimen part, Cell line
View SamplesTo investigate potential differences between strong and weak oscillators at the gene expression level we carried out a transcriptome analysis for each cell line. Our results indicate that phenotypic circadian clock differences are reflected by gene expression differences both in genes of the core network, but also in additional genes not directly associated with circadian clock functions.
Ras-mediated deregulation of the circadian clock in cancer.
Specimen part, Cell line, Time
View SamplesThe transcriptional profile of A673 parental and SP-2509 Drug resistant cells treated with DMSO and SP-2509 (2uM 48hrs) Overall design: A673 parental and SP-2509 Drug resistant cells treated with DMSO and SP-2509 (2uM 48hrs)
Ewing sarcoma resistance to SP-2509 is not mediated through KDM1A/LSD1 mutation.
Treatment, Subject
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