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DNA methylation epigenotype expanding to non-polycomb target genes, induced by Epstein-Barr virus infection in human gastric cancer

ABSTRACT: DNA methylation epigenotype expanding to non-polycomb target genes, induced by Epstein-Barr virus infection in human gastric cancer

PROVIDER: PRJNA145257 | ENA |

REPOSITORIES: ENA

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DNA methylation epigenotype expanding to non-polycomb target genes, induced by Epstein-Barr virus infection in human gastric cancer

Project description:This SuperSeries is composed of the following subset Series: GSE31787: Aberrant DNA methylation epigenotype expanding to non-polycomb target genes, induced by Epstein-Barr virus infection in human gastric cancer [Affymetrix Expression] GSE31788: Aberrant DNA methylation epigenotype expanding to non-polycomb target genes, induced by Epstein-Barr virus infection in human gastric cancer [Illumina Methylation] Refer to individual Series

2012-01-04 | E-GEOD-31789 | biostudies-arrayexpress

Aberrant DNA methylation epigenotype expanding to non-polycomb target genes, induced by Epstein-Barr virus infection in human gastric cancer [Illumina Methylation]

Project description:Aberrant promoter methylation is known to be deeply involved in human gastric carcinogenesis, while association of Epstein-Barr virus (EBV) to the aberrant methylation has not been fully clarified. We analyzed promoter methylation in clinical gastric cancer cases using illumina's Infinium beadarray, and hierarchical clustering analysis classified gastric cancer into three subgroups: low and high methylation epigenotypes in EBV-negative cases, and markedly higher methylation epigenotype that was completely matched to EBV-positive cases. Three epigenotypes were characterized by three groups of genes: genes methylated specifically in the EBV-positive epigenotype (EBV(+)-markers, e.g. CXXC4, TIMP2, PLXND1), genes methylated both in EBV-positive and high epigenotypes (High-markers, e.g. COL9A2, EYA1, ZNF365), and genes methylated all in EBV-positive, high and low epigenotypes of gastric cancer (Common-markers, e.g. AMPH, SORCS3, AJAP1). Polycomb repressive complex (PRC)-target genes in ES cells were significantly enriched in High- and Common-markers (P=2x10-15 and 2x10-34, respectively), but not in EBV(+)-markers (P=0.2), suggesting a different cause for EBV(+)-marker methylation. Recombinant EBV was infected to low epigenotype gastric cancer cell, MKN7. In all the three independently established clones, DNA methylation was induced in High- and EBV(+)-markers after 18 weeks, demonstrating that EBV-positive epigenotype should involve methylation of Common-, High-, and EBV(+)-markers simultaneously. The de novo methylated genes were overlapped well among the three clones, and the methylation caused gene repression. In summary, gastric cancer was classified into three DNA methylation epigenotypes, EBV-positive gastric cancer showed markedly high methylation epigenotype expanding to non-PRC target genes, and EBV infection per se could induce the EBV-positive epigenotype.

2012-01-04 | GSE31788 | GEO

Aberrant DNA methylation epigenotype expanding to non-polycomb target genes, induced by Epstein-Barr virus infection in human gastric cancer [Affymetrix Expression]

2012-01-04 | GSE31787 | GEO

Ganciclovir Plus Arginine Butyrate in Treating Patients With Cancer or Lymphoproliferative Disorders Associated With the Epstein Barr Virus

Project description:RATIONALE: The Epstein Barr virus can cause cancer and lymphoproliferative disorders. Ganciclovir is an antiviral drug that acts against the Epstein Barr virus. Arginine butyrate may make virus cells more sensitive to ganciclovir. Combining ganciclovir and arginine butyrate may kill more Epstein Barr virus cells and tumor cells. PURPOSE: Phase I trial to study the effectiveness of arginine butyrate plus ganciclovir in treating patients who have cancer or lymphoproliferative disorders that are associated with the Epstein Barr virus.

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The Epstein Barr virus circleRNAome

Project description:The Epstein Barr virus circleRNAome

| PRJNA479852 | ENA

Analysis of microRNA expression during Epstein-Barr virus encoded LMP1 and LMP2A transfected in TW03 cells

Project description:Epstein-Barr virus has been reported to regulate cellular microRNA expression in B cells. In the present study, we investigated the differential microRNAs modulated by Epstein-Barr virus in Naspharyngeal Carcinoma, using CapitalBio corporation's mammalian miRNA arrays. Three cellular models were used in this study: the human naspharyngeal carcinoma cell line TW03 as a blank control; TW03 transfected with Epstein-Barr virus encoded LMP1; TW03 transfected with Epstein-Barr virus encoded LMP2A

2011-01-13 | E-GEOD-26596 | biostudies-arrayexpress

AGS cells infected with Epstein Barr Virus

Project description:Gene expression profile of AGS gastric carcinoma cell line infected in vitro with Epstein-Barr Virus. Some samples also contain are stably transfected with a dominant negative LMP1 construct.

2012-05-08 | GSE37753 | GEO

PLK1 phosphorylation of Epstein-Barr virus nuclear antigen 2

Project description:The Epstein-Barr virus nuclear antigen 2 (EBNA2) initiates and maintains the proliferation of infected B cells. In search of additional cellular strategies, that control EBNA2 function, we have performed a label-free mass spectrometry-based quantification of cellular proteins in EBNA2 immuno-precipitates and found polo-like kinase 1 (PLK1) to be bound to EBNA2. EBNA2/PLK1 complex formation is strongly enforced by EBNA2 S379 phosphorylation catalyzed by the mitotic CYCLIN B/CDK1 complex.

2021-08-22 | PXD022970 | Pride

Richter transfromation of chronic lymphocytic leukemia driven by Epstein-Barr virus reactivation during therapy-realted immunosuppression

Project description:Gene expression analysis in Epstein-Barr virus negative DLBCL samples obtained from patients with Richter syndrome, lymphocytes from CLL patients and epstein-Barr virus positive DLBCL cell lines derived after CLL tumors xenotransplantation

2020-08-29 | GSE103265 | GEO

Analysis of microRNA expression during Epstein-Barr virus encoded LMP1 and LMP2A transfected in TW03 cells

2011-01-13 | GSE26596 | GEO