CLIP-seq diagram of ZAP-binding RNA mapped to JEV genome
Ontology highlight
ABSTRACT:
ORGANISM(S): Homo sapiens
PROVIDER: GSE115747 | GEO | 2018/07/31
REPOSITORIES: GEO
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Project description:CLIP-seq diagram of ZAP-binding RNA mapped to JEV genome
| PRJNA475947 | ENA
Project description:B16F10, a murine melanoma cel line is cytolytic to JEV infection. We have identified a B16F10 cell line variant which is non-cytolytic to JEV infection. This variant cell line has two types of cells, one which is persistently infected JEV and another which is resistant to JEV infection. The JEV-resistant cells (B16F10r) were seperated from the presistently infected cells by single cell cloning. To understand the mechanism of JEV resistance microarray analysis was caried out to Identify and characterize genes differentially expressed during in uninfected/JEV-infected B16F10 and B16F10r cells.
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Project description:B16F10, a murine melanoma cel line is cytolytic to JEV infection. We have identified a B16F10 cell line variant which is non-cytolytic to JEV infection. This variant cell line has two types of cells, one which is persistently infected JEV and another which is resistant to JEV infection. The JEV-resistant cells (B16F10r) were seperated from the presistently infected cells by single cell cloning. To understand the mechanism of JEV resistance microarray analysis was caried out to Identify and characterize genes differentially expressed during in uninfected/JEV-infected B16F10 and B16F10r cells. Agilent one-color experiment,Organism: Mus musculus ,Agilent Custom Mouse Whole Genome Mouse 8x60k Gene expression designed by Genotypic Technology Private Limited, Labeling kit: Agilent Quick-Amp labeling Kit (p/n5190-0442)
2013-08-01 | E-GEOD-42942 | biostudies-arrayexpress
Project description:B-cell chronic lymphocytic leukemia (B-CLL) is a heterogenous disease with a highly variable clinical course and analysis of ZAP-70 and CD38 expression on B-CLL cells allowed for identification of patients with good (ZAP-70-CD38-), intermediate (discordant expression of ZAP-70 and CD38) and poor (ZAP-70+CD38+) prognosis. In an attempt to identify a molecular basis that may underly this diverse clinical behaviour DNA microarray technology was employed to compare eight ZAP-70+CD38+ with eight ZAP-70-CD38- B-CLL cases. We used microarrays to detail the global programme of gene expression distinguising B-CLL from patient with good (samples 1 to 8) and poor prognosis (sample 9 to 16) and identified distinct classes of up- and down-regulated genes. Keywords: Disease progression
2006-09-22 | GSE4392 | GEO
Project description:B-cell chronic lymphocytic leukemia (B-CLL) is a heterogenous disease with a highly variable clinical course and analysis of ZAP-70 and CD38 expression on B-CLL cells allowed for identification of patients with good (ZAP-70-CD38-), intermediate (discordant expression of ZAP-70 and CD38) and poor (ZAP-70+CD38+) prognosis. In an attempt to identify a molecular basis that may underly this diverse clinical behaviour DNA microarray technology was employed to compare eight ZAP-70+CD38+ with eight ZAP-70-CD38- B-CLL cases. We used microarrays to detail the global programme of gene expression distinguising B-CLL from patient with good (samples 1 to 8) and poor prognosis (sample 9 to 16) and identified distinct classes of up- and down-regulated genes. Experiment Overall Design: To compare the transcriptosomes of good prognosis CLL cases (ZAP-70-CD38-) to poor prognosis cases (ZAP-70+CD38+), we purified CD19+ cells from peripheral blood samples by immunomagnetic isolation using MidiMacs, resulting in >95% purity of leukemic cells as detected by FACS analysis of CD19+CD5+ cells. The leukemic cells were freshly purified from untreated patients and RNA was directly isolated from fresh cells without further ex vivo treatment of the cells. Eight immunomagnetically purified peripheral blood derived ZAP-70+CD38+ CLL cases were compared with eight ZAP-70-CD38- B-CLL cases.
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Project description:Infection by neurotropic virus Japanese Encephalitis Virus (JEV) is characterized by profound neuronal cell death and neuroinflammation. Long non-coding RNAs (lncRNAs) are critical regulatory players in diverse biological processes, including viral pathogenesis. We use whole transcriptomic sequencing to identify a lncRNA JINR1 (JEV-induced non-coding RNA 1) induced upon JEV infection in neuronal cells. Transcription factor NF-κB triggers JINR-1 expression during JEV infection. Loss of JINR-1 impairs virus replication and reduces JEV-induced neuronal cell death and expression of genes involved in ER stress and neuroinflammation. Mechanistically, JINR1 inhibits the expression of mir-216-5p, which inhibits host factors GRP78 and c-JUN and the viral genome. In line with its role as a pro-viral host factor, JINR1 interacts with RBM10 and NF-κB to promote the expression of genes involved in ER stress and neuroinflammation. Our results suggest a role for JINR-1 in promoting JEV-induced cell death and neuroinflammation.
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Project description:Among the flaviviral proteins, NS5 is the largest and most conserved. NS5 contains major enzymatic components of the viral replication complex. Disruption of the common key NS5-host protein-protein interactions critical for viral replication could aid in the development of broad-spectrum anti-flaviviral therapeutics. To this end, we investigated the JEV- and ZIKV-NS5 interactomes in human cells using GFP pull-downs with mass spectrometry analysis in a label-free fashion. A total of 138 cellular proteins interacting with NS5 from JEV, ZIKV, or both were identified as Protein classification analysis of identified cellular targets revealed the enrichment of RNA binding, processing and splicing including spliceosomal and spliceosome-associated proteins in both datasets. Comparison of our data with literature not only revealed several cellular NS5 interacting proteins shared among flaviviruses, but also identified proteins that have no known function in flavivirus biology such as RNA polymerase II-associated Paf1 complex, protein phosphatase 6, and s-adenosylmethionine synthetase. Our study generates the first landscape of the JEV and ZIKV NS5 interactome in human cells and identifies cellular proteins that are potentially targetable for broad-spectrum anti-flaviviral therapy.
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Project description: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. Gene expression in the brain following WNV or JEV infection. WNV- or JEV-infected (N=3) vs. mock-infected (N=3) mouse brain.
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Project description:Characterization of transcriptional signature of innate immune response and metabolic pathways in monocytes derived dendritic cells (MoDCs) of healthy donors during JEV infection.
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Project description:Chronic lymphocytic leukemia (CLL) is a disease with a highly variable prognosis. The clinical course can however be predicted thanks to prognostic markers. Poor prognosis is associated with expression of a B cell receptor (BCR) from unmutated immunoglobulin variable heavy-chain genes (IgVH) and expression of zeta associated protein of 70 kDa (ZAP-70). The reason why ZAP-70 expression is associated with poor prognosis and whether the protein has a direct pathogenic function is at present unknown. By transfer of ZAP-70 to CLL cells, we show here that expression of ZAP-70 in CLL cells leads to increased expression of the NF-M-NM-:B target genes interleukin-1M-NM-2 (IL-1M-NM-2), IL-6 and IL-8 upon BCR triggering. This could be blocked by inhibition of NF-M-NM-:B signaling through inhibition of IM-NM-:B kinases (IKK). Transcriptome analysis identified a NF-M-NM-:B RelA signature imposed by ZAP-70 expression in BCR stimulated CLL cells. We conclude that ZAP-70 acts directly as an amplifier of NF-M-NM-:B signaling in CLL cells which could be an underlying mechanism for its association with poor prognosis and which may represent a therapeutic target. 22 patient samples, Stimulated for 3h or 24h, Electroporated with capped ZAP-70 mRNA or uncapped ZAP-70 mRNA (negative control)
2013-10-22 | E-GEOD-51286 | biostudies-arrayexpress