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The forced loss of Epstein Barr virus from Burkitt's lymphoma cells: uncomplemented cells vs BART miRNA complemented cells.

ABSTRACT: Transcriptional profiling of Burkitt lymphoma cells engineered to inducibly express dominant negative EBNA1 (dnEBNA1), which forces the loss of Epstein Barr virus (EBV). Profiles are made of cells in which all of EBV is lost (dnEBNA1 on) or all of EBV except the BART miRNAs is lost (dnEBNA1 on, BART miRNAs ectopically expressed). This is a 2-condition experiment: uncomplemented cells (EBV evicted with dnEBNA1), and BART-complemented cells (EBV evicted with dnEBNA1, BART miRNAs expressed ectopically). There are 3 biological replicates for each condition.

ORGANISM(S): Homo sapiens

SUBMITTER: Bill Sugden

PROVIDER: E-GEOD-22586 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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The forced loss of Epstein Barr virus from Burkitt's lymphoma cells: uncomplemented cells vs BART miRNA complemented cells.

Project description:Transcriptional profiling of Burkitt lymphoma cells engineered to inducibly express dominant negative EBNA1 (dnEBNA1), which forces the loss of Epstein Barr virus (EBV). Profiles are made of cells in which all of EBV is lost (dnEBNA1 on) or all of EBV except the BART miRNAs is lost (dnEBNA1 on, BART miRNAs ectopically expressed).

2010-10-01 | GSE22586 | GEO

Gene expression profiles of epithelial cells infected with microRNA-negative and -positive Epstein-Barr viruses

Project description:The Epstein-Barr virus (EBV) encodes its own microRNAs (miRNAs); however, their biological roles remain elusive. The commonly used EBV B95-8 strain lacks a 12 kb genomic region, known as BamHI A Rightward Transcripts (BART) locus, which encodes a number of viral miRNAs (BART miRNAs). These miRNAs are expressed abundantly in EBV-positive epithelial malignancies, suggesting that the 12 kb region somehow contributes to EBV-mediated epithelial carcinogenesis. Bacterial artificial chromosome (BAC) technology was used to generate an EBV B95-8 strain in which the 12 kb region was fully restored at its native locus (BART-restored virus). HEK293 and AdAH cells infected with either the parental BART-deleted virus or the BART-restored virus were established. The gene expression profiles of these cells were examined to identify cellular target genes of BART miRNAs.

2015-02-05 | GSE58723 | GEO

Gene expression profiles of epithelial cells infected with microRNA-negative and -positive Epstein-Barr viruses

2015-02-05 | E-GEOD-58723 | biostudies-arrayexpress

EBV BART MicroRNAs Target Multiple Pro-apoptotic Cellular Genes to Promote Epithelial Cell Survival

Project description:Here, we report a systematic effort to identify pro-apoptotic mRNA targets for the EBV miR-BART miRNAs. We demonstrate that at least five of the 22 miR-BART pre-miRNAs have anti-apoptotic activity and we identify seven pro-apoptotic cellular mRNA targets, six of them novel, that contribute significantly to the observed anti-apoptotic phenotype. Together, these data represent a substantial increase in our understanding of the role of the miR-BART miRNAs in promoting EBV infection and latency. Use of deep sequencing to identify all the miRNAs expressed in C666 cells and PAR-CLIP to comprehensively profile EBV miRNA targets in C666 cells.

2015-06-16 | E-GEOD-67990 | biostudies-arrayexpress

EBV BART MicroRNAs Target Multiple Pro-apoptotic Cellular Genes to Promote Epithelial Cell Survival

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Expression of EBV miRNAs in numerous EBV-positive cell lines

2008-12-01 | GSE12014 | GEO

Expression data from Burkitt's Lymphoma cell line BL2 transiently transfected with Epstein-Barr Virus miRNA mimics BART 18-5p, 10, 14*

Project description:Cellular targets for most of EBV miRNAs are not known. In our study, we aimed at identifying genes that are regulated by individual EBV mature miRNA, particularly BART 18-5p We used microarrays to explore the global gene expression (particularly the downregulated genes) targeted by EBV miRNA mimics. Burkitt's lymphoma cell lines, BL2 and BJAB, were transfected with miRNA mimic control (MC) and EBV miRNA mimics BART 18-5p, 10 and 14* for 24 hour prior to RNA extraction and hybridization on Affymetrix human HGU133 plus 2.0 microarrays.

2014-08-01 | E-GEOD-58224 | biostudies-arrayexpress

Expression data from Burkitt's Lymphoma cell line BL2 transiently transfected with Epstein-Barr Virus miRNA mimics BART 18-5p, 10, 14*

2014-08-01 | GSE58224 | GEO

Expression data of EBV-positive and EBV-negative subclones of gastric adenocarcinoma cell line AGS

Project description:Gastric cancer is one of the most common cancers worldwide. Epstein-Barr virus-associated gastric cancer accounts for approximately 10% of all gastric cancers. EBV expresses its own proteins and miRNAs (BART miRNAs) and regulates host gene expression. In this study, we examined the effect of EBV infection on host mRNA expression. Differential gene expression was analyzed between EBV-negative human gastric cancer cell line AGS and EBV-positive human gastric cancer cell line AGS-EBV.

2019-10-14 | GSE135644 | GEO

Expression of EBV miRNAs in numerous EBV-positive cell lines

Project description:EBV-positive cell lines were assayed for expression of EBV miRNAs. The names of the miRNAs are from miRBase from Fall 2007. Microarray probes are tandem complements of the mature miRNA sequence. We assayed Burkitt's lymphoma (BL), Nasopharyngeal carcinoma, post-transplant lymphoproliferative disease (PTLD), primary effusion lymphoma, and lymphoblastoid cell lines. We also assayed primary B cells that were infected with the B95-8 strain of EBV, which was found to express EBV miRNAs as early as 20 hours post infection. We have found PTLD and BLs from HIV-positive donors both express EBV miRNAs. These types of cell lines have not previously been found to express viral miRNAs. We have found that cells that support type I and type II latency express only the BART miRNAs, whereas cells that support type III latency express BART and BHRF1 miRNAs. Furthermore, BL cell lines that spontaneously lose EBV express levels of the viral miRNAs that are at least 5-fold lower than cell lines that do not lose EBV. In total, 48 samples have been assayed and included in this study. EBV-negative control samples are not included in this data set, but raw and processed data may be requested from the contributors. These EBV-negative cell lines include the Burkitt's lymphoma cell lines, BJAB and Akata-negative, the gastric carcinoma cell line, AGS, and uninfected primary B cells. Of the 48 samples, we have assayed 22 different EBV-positive cell lines and 4 different time points after infection of primary B cells with EBV. Replicates of the majority of cell lines is included in this data set. Replicates are from independent RNA isolations that were then hybridized to individual microarrays.

2008-11-30 | E-GEOD-12014 | biostudies-arrayexpress

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