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BJAB Cell Lines Transduced with lentiviral vector pNL-SIN-CMV-AcGFP expressing KSHV miRNAs miR-K1, miR-K12-11, or miR-K4-3p

ABSTRACT: BJAB cells were infected with pNL-SIN-CMV-AcGFP (see accession number GSE8867 for data) or pNL-SIN-CMV-AcGFP expressing KSHV miR-K1, miR-K12-11 or miR-K4-3p and sorted 48 hours after infection. 12 or 16 days after transduction, cytoplasmic RNA was harvested and gene expression analysis of independent BJAB cell pools was performed using Human Operon v3.0.2 arrays. Each sample was run against Universal Human Reference RNA, Stratagene. The samples listed here were processed in parallel to those with accession number GSE8867, which includes all matched control cell lines.

ORGANISM(S): Homo sapiens

PROVIDER: GSE31746 | GEO | 2011/11/16

SECONDARY ACCESSION(S): PRJNA155021

REPOSITORIES: GEO

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BJAB Cell Lines Transduced with lentiviral vector pNL-SIN-CMV-AcGFP expressing KSHV miRNAs miR-K1, miR-K12-11, or miR-K4-3p

Project description:BJAB cells were infected with pNL-SIN-CMV-AcGFP (see accession number GSE8867 for data) or pNL-SIN-CMV-AcGFP expressing KSHV miR-K1, miR-K12-11 or miR-K4-3p and sorted 48 hours after infection. 12 or 16 days after transduction, cytoplasmic RNA was harvested and gene expression analysis of independent BJAB cell pools was performed using Human Operon v3.0.2 arrays. Each sample was run against Universal Human Reference RNA, Stratagene. The samples listed here were processed in parallel to those with accession number GSE8867, which includes all matched control cell lines. 6 independent B cell pools each expressing KSHV miR-K1, miRK12-11, or miR-K4-3p are included. Matched controls include unmodified BJAB (3 arrays) and cells transducted with parental vector pNL-SIN-CMV-AcGFP (6 replicates).

2011-11-16 | E-GEOD-31746 | biostudies-arrayexpress

BJAB Cell Lines Unmodified, Transduced with ith lentiviral vector pNL-SIN-CMV-AcGFP or pNL-SIN-CMV-AcGFP/miR-K12-11

Project description:All metazoan eukaryotes express microRNAs (miRNAs), ~22 nt long regulatory RNAs that can repress the expression of mRNAs bearing complementary sequences. Several DNA viruses also express miRNAs in infected cells, suggesting a role in viral replication and pathogenesis. While specific viral miRNAs have been shown to autoregulate viral mRNAs or downregulate cellular mRNAs via novel target sites, the function of the majority of viral miRNAs remains unknown. Here, we report that the miR-K12-11 miRNA encoded by Kaposi’s Sarcoma Associated Herpesvirus (KSHV) shows significant homology to cellular miR-155, including the entire miRNA “seed” region. Using a range of assays, we demonstrate that expression of physiological levels of miRK12- 11 or miR-155 results in the downregulation of an extensive set of common mRNA targets, including genes with known roles in cell growth regulation. Our findings indicate that viral miR-K12-11 functions as an ortholog of cellular miR-155 and has likely evolved to exploit a pre-existing gene regulatory pathway in B-cells. Moreover, the known etiological role of miR-155 in B-cell transformation suggests the possibility that miR-K12-11 may contribute to the induction of KSHV positive B-cell tumors in infected patients. BJAB cells were infected and sorted 48 hours after infection. 12 to 16 days after transduction, gene expression analysis of 10 independent BJAB cell pools, expressing AcGFP only or AcGPF and miR-K12-11, was performed using Human Operon v3.0.2 arrays. Each ample was run against Universal Human Reference RNA, Stratagene. # of Arrays: BJAB = 3 AcGFP only = 10 AcGFP miR-K12-11 = 11

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Project description:This SuperSeries is composed of the following subset Series: GSE31745: Primary effusion lymphoma cell lines BC-1 and BC-3 GSE31746: BJAB Cell Lines Transduced with lentiviral vector pNL-SIN-CMV-AcGFP expressing KSHV miRNAs miR-K1, miR-K12-11, or miR-K4-3p GSE32109: microRNA Targetome Analysis of Latently KSHV-infected Primary Effusion Lymphoma Cell lines Using PAR-CLIP [Illumina] Refer to individual Series

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Project description:BJAB Cell Lines Unmodified, Transduced with ith lentiviral vector pNL-SIN-CMV-AcGFP or pNL-SIN-CMV-AcGFP/miR-K12-11

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