Infection of Kaposi's sarcoma associated herpes virus (KSHV) has been linked to the development of primary effusion lymphoma (PEL), which is characterized by the loss of expression of B cell markers and effusions in the body cavities. This unique clinical feature of PEL has been attributed to their distinctive gene expression profile which shows overexpression of genes in various signaling pathways. KSHV-encoded latent protein vFLIP K13 has been shown to promote the survival and proliferation of PEL cells. In this study, we have employed gene array analysis followed by bioinformatics analysis of coordinated transcriptional factors network as well as biological pathways to characterize the effect of K13 on PEL-derived BCBL1 cells. We observed that genes associated with Cytokine signaling, Cell death, NF-kappaB and Cell adhesion pathways were differentially regulated by K13.
A computational profiling of changes in gene expression and transcription factors induced by vFLIP K13 in primary effusion lymphoma.
Specimen part, Cell line, Treatment
View SamplesIntegrated microarray and multiplex cytokine analyses of Kaposi's Sarcoma Asssociated Herpesvirus viral FLICE Inhibitory Protein K13 affected genes and cytokines in human blood vascular endothelial cells. The KSHV-encoded K13 protein is one of the few proteins to be expressed in latently-infected spindle cells and the ectopic expression of K13 in human vascular endothelial cells is sufficient to transform them into spindle cells.
Integrated microarray and multiplex cytokine analyses of Kaposi's Sarcoma Associated Herpesvirus viral FLICE Inhibitory Protein K13 affected genes and cytokines in human blood vascular endothelial cells.
Specimen part
View SamplesWe report here that KSHV viral infection targets the NF-kB pathway which is crucial for cell survival. KSHV protein vFLIP K13 is known to directly interact with cellular protein NEMO of the NF-kB pathway. We used gene expression array to suggets that the interaction of K13 with NEMO is important to activate NF-kB pathway.
NEMO is essential for Kaposi's sarcoma-associated herpesvirus-encoded vFLIP K13-induced gene expression and protection against death receptor-induced cell death, and its N-terminal 251 residues are sufficient for this process.
Specimen part, Cell line
View SamplesLinker histone H1 is a protein component of chromatin and has been linked to chromatin compaction and global gene silencing.It has been sugegsted that H1 plays a significant role, regulating a relatively small number of genes. Here we show that H1.2- a variant of H1 subtype is recruited to chromatin region and is dependent on EZH2-mediated H3K27me3. Therefore a Gene expression array analysis was carried out with H1.2 as well as EZH2 knockout MCF7 cells to confirm the interlationship of H1.2 and EZH2 activity.
Linker histone H1.2 establishes chromatin compaction and gene silencing through recognition of H3K27me3.
Cell line
View SamplesMesenchymal stem cells (MSCs) are multipotent progenitor cells present in various mesenchymal tissues that undergo strict lineage-specific differentiation programs, faithful to their unique tissue origins. However, the key regulators that activate dental pulp MSC commitment to odontogenesis remain unclear. In this study, we utilized an inducible Cre/loxP system to interrupt BMP signaling in apical MSCs at the onset of molar root formation in order to investigate the functional requirement for BMP signaling and its downstream targets in MSC cell fate determination during tooth morphogenesis. Overall design: mRNA profiling of MSC to study role of BMP signaling in tooth morphogenesis
BMP signaling orchestrates a transcriptional network to control the fate of mesenchymal stem cells in mice.
Specimen part, Cell line, Subject
View SamplesThough limited proteolysis of the histone H3 N-terminal tail (H3NT) is frequently observed during mammalian differentiation, however the specific genomic sites targeted for H3NT proteolysis and their functional significance of H3NT cleavage remain unknown.We used genome wide RNA-seq approaches to an established cell model of osteoclast differentiation. We discovered that H3NT proteolysis is selectively targeted near transcription start sites of a small group of genes and that most of these H3NT-cleaved genes are epigenetically regulated during osteoclastogenesis.We have identified that the principal H3NT protease of osteoclastogenesis is matrix metalloproteinase 9 (MMP-9). We next studied genomewide mRNA expression in MMP9 knockout cells and its effect in the epigenetic reprogramming of gene pathways required for proficient osteoclastogenesis. Overall design: Differential expresssion profile of transcripts in wt and MMP9 knockout cells
MMP-9 facilitates selective proteolysis of the histone H3 tail at genes necessary for proficient osteoclastogenesis.
Specimen part, Cell line, Treatment, Subject
View SamplesWe wanted to understand at what level BTS acts, i.e. how upstream BTS acts and if BTS misregulation affets only a subset or multiple subsets of Fe regulated genes. We studied WT and bts-3 mutant roots.
BRUTUS and its paralogs, BTS LIKE1 and BTS LIKE2, encode important negative regulators of the iron deficiency response in Arabidopsis thaliana.
Specimen part
View SamplesTo identify signature genes associated with increased osteoblastic phenotype in response to co-culture of mesenchymal and neuroblastoma cells
Interaction between bone marrow stromal cells and neuroblastoma cells leads to a VEGFA-mediated osteoblastogenesis.
No sample metadata fields
View SamplesWe used microarrays to detail the global programme of gene expression underlying cellularisation and identified distinct classes of up-regulated genes during this process.
NANOG Metabolically Reprograms Tumor-Initiating Stem-like Cells through Tumorigenic Changes in Oxidative Phosphorylation and Fatty Acid Metabolism.
Specimen part
View SamplesThis SuperSeries is composed of the SubSeries listed below.
Genome-wide profiling identifies a DNA methylation signature that associates with TET2 mutations in diffuse large B-cell lymphoma.
Specimen part
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