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Competitive Endogenous RNA Landscape in Epstein-Barr Virus Associated Nasopharyngeal Carcinoma

ABSTRACT: Competitive Endogenous RNA Landscape in Epstein-Barr Virus Associated Nasopharyngeal Carcinoma

PROVIDER: PRJNA753839 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR15417410_1.fastq.gz	Fastqsanger.gz
	SRR15417410_2.fastq.gz	Fastqsanger.gz
	SRR15417411_1.fastq.gz	Fastqsanger.gz
	SRR15417411_2.fastq.gz	Fastqsanger.gz
	SRR15417412_1.fastq.gz	Fastqsanger.gz

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Competitive Endogenous RNA Landscape in Epstein-Barr Virus Associated Nasopharyngeal Carcinoma

Project description:In this study, we investigated the role of microRNAs and circular RNAs in Nasopharyngeal Carcinoma (NPC) by constructing a circRNA-miRNA-mRNA co-expression network and performing differential expression analysis on mRNAs, miRNAs, and circRNAs. By comparing the expression profile of non-cancerous immortalized nasopharyngeal epithelial cell lines and NPC cell lines, we identified differentially expressed coding and non-coding RNAs. By leveraging coexpression and miRNA target prediction tools, we constructed a ceRNA network composed of mRNAs, miRNAs, and circRNAs.

2022-09-01 | GSE181906 | GEO

Identification of novel Epstein-Barr Virus miRNA genes from Nasopharyngeal Carcinomas

Project description:MicroRNAs (miRNAs) represent a conserved class of small non-coding RNAs that are found in all higher eukaryotes as well as some DNA viruses. MiRNAs are 20-25 nucleotides (nt) in length and have important regulatory functions in biological processes such as embryonic development, cell differentiation, hormone secretion or metabolism. Furthermore, miRNAs have been implicated in the pathology of various diseases including cancer. MiRNA expression profiles not only classify different types of cancer but also may even help to characterize distinct tumor stages, therefore constituting a valuable tool for prognosis. Here we report the miRNA profile of Epstein-Barr Virus (EBV)-positive nasopharyngeal carcinoma (NPC) tissue samples characterized by cloning and sequencing. We find that all EBV miRNAs from the BART region are expressed in NPC tissues whereas ebv-miRNAs from the BHRF1 region are not found. Moreover, we identify two novel EBV miRNA genes originating from the BART region that have not been found in other tissues or cell lines before. We also identify three new human miRNAs, which might be specific for nasopharyngeal tissues. We further show that a number of different cellular miRNAs are upor down-regulated in NPC tissues compared to control tissue including miR-15a and miR-16. We find that the tumor suppressor BRCA-1 is a target of miR-15a as well as miR-16 suggesting a miRNA role in NPC pathogenesis. 2 pairs of NPC and control tissues from 2 patients (4 samples in total) were examined.

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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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Competitive Endogenous RNA Landscape in Epstein-Barr Virus Associated Nasopharyngeal Carcinoma.

Project description:Non-coding RNAs have been shown to play important regulatory roles, notably in cancer development. In this study, we investigated the role of microRNAs and circular RNAs in Nasopharyngeal Carcinoma (NPC) by constructing a circRNA-miRNA-mRNA co-expression network and performing differential expression analysis on mRNAs, miRNAs, and circRNAs. Specifically, the Epstein-Barr virus (EBV) infection has been found to be an important risk factor for NPC, and potential pathological differences may exist for EBV+ and EBV- subtypes of NPC. By comparing the expression profile of non-cancerous immortalized nasopharyngeal epithelial cell line and NPC cell lines, we identified differentially expressed coding and non-coding RNAs across three groups of comparison: cancer vs. non-cancer, EBV+ vs. EBV- NPC, and metastatic vs. non-metastatic NPC. We constructed a ceRNA network composed of mRNAs, miRNAs, and circRNAs, leveraging co-expression and miRNA target prediction tools. Within the network, we identified the regulatory ceRNAs of CDKN1B, ZNF302, ZNF268, and RPGR. These differentially expressed axis, along with other miRNA-circRNA pairs we identified through our analysis, helps elucidate the genetic and epigenetic changes central to NPC progression, and the differences between EBV+ and EBV- NPC.

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Identification of novel Epstein-Barr Virus miRNA genes from Nasopharyngeal Carcinomas

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Project description:Nasopharyngeal carcinoma is an Epstein-Barr virus-associated epithelial cancer with high prevalence in Southeast Asia. mRNA expression levels were measured for essentially all human genes and all latent Epstein-Barr virus (EBV) genes in nasopharyngeal carcinoma tissue samples and normal nasopharyngeal tissues. Data were analyzed for differential gene expression between tumor and normal tissue and for correlations with levels of viral gene expression. Primary publications: Sengupta et al, 2006, Cancer Research 66(16): 7999-8006. Dodd et al, 2006, Cancer Epidemiology, Biomarkers & Prevention 15(11): 2216-2225. In subsequent studies using the same set of tissue samples, microRNA levels were measured in tumors and normal tissues and analyzed for correlations with differential target gene expression (Sengupta et al, 2008, Proc. Nat. Acad. Sci. USA 105: 5874-5878.) Experiment Overall Design: Total RNA extracted from laser-captured epithelium from 31 nasopharyngeal carcinomas and 10 normal healthy nasopharyngeal tissue specimens.

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Project description:Nasopharyngeal carcinoma is an Epstein-Barr virus-associated epithelial cancer with high prevalence in Southeast Asia. mRNA expression levels were measured for essentially all human genes in nasopharyngeal carcinoma tissue samples and normal nasopharyngeal tissues. Data were analyzed for differential gene expression between tumor and normal tissue.

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Project description:The Epstein Barr virus circleRNAome

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