Identification of XMRV Infection-Associated microRNAs in Four Cell Types in Culture
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ABSTRACT:
ORGANISM(S): Homo sapiens
SUBMITTER: Krishna Ketha
PROVIDER: E-GEOD-37788 | biostudies-arrayexpress |
REPOSITORIES: biostudies-arrayexpress
Similar Datasets
Project description:XMRV is a gammaretrovirus that was thought to be associated with prostate cancer (PC) and chronic fatigue syndrome (CFS) in humans until recently. The virus is culturable in various cells of human origin like lymphocytes, NK cells, neuronal cells, and prostate cell lines. MicroRNAs (miRNAs), which regulate gene expression, were so far not identified in cells infected with XMRV in culture. Two prostate cancer cell lines (LNCaP and DU145) and two primary cells (peripheral blood lymphocytes (PBLs) and monocyte-derived macrophages (MDMs)) were infected with XMRV. Total mRNA was extracted from mock- and virus-infected cells at 6, 24 and 48 hours post-infection and evaluated for microRNA profile in a microarray. MicroRNA expression profiles of XMRV-infected continuous prostate cancer cell lines differ from that of virus-infected primary cells (PBLs and MDMs). miR-193a-3p and miRPlus-E1245 were observed to be specific to XMRV infection in all 4 cell types. While miR-193a-3p levels were down-regulated, miRPlus-E1245 on the other hand exhibited varied expression among the 4 cell types. The present study demonstrates that cellular microRNAs are expressed during XMRV infection of human cells. This is the first report demonstrating the regulation of miR193a-3p and miRPlus-E1245 during XMRV infection in four different human cell types. Two prostate cancer cell lines (LNCaP and DU145) and two primary cells (peripheral blood lymphocytes (PBLs) and monocyte-derived macrophages (MDMs)) were infected with XMRV. Total mRNA was extracted from mock- and virus-infected cells at 6, 24 and 48 hours post-infection in duplicates and evaluated for microRNA profile in a microarray. Each test sample RNA was labeled with Hy3 and the reference pool (made by pooling all 24 test samples in each run) was labeled with Hy5.
2012-05-05 | E-GEOD-37787 | biostudies-arrayexpress
Project description:XMRV is a gammaretrovirus that was thought to be associated with prostate cancer (PC) and chronic fatigue syndrome (CFS) in humans until recently. The virus is culturable in various cells of human origin like lymphocytes, NK cells, neuronal cells, and prostate cell lines. MicroRNAs (miRNAs), which regulate gene expression, were so far not identified in cells infected with XMRV in culture. Two prostate cancer cell lines (LNCaP and DU145) and two primary cells (peripheral blood lymphocytes (PBLs) and monocyte-derived macrophages (MDMs)) were infected with XMRV. Total mRNA was extracted from mock- and virus-infected cells at 6, 24 and 48 hours post-infection and evaluated for microRNA profile in a microarray. MicroRNA expression profiles of XMRV-infected continuous prostate cancer cell lines differ from that of virus-infected primary cells (PBLs and MDMs). miR-193a-3p and miRPlus-E1245 were observed to be specific to XMRV infection in all 4 cell types. While miR-193a-3p levels were down-regulated, miRPlus-E1245 on the other hand exhibited varied expression among the 4 cell types. The present study demonstrates that cellular microRNAs are expressed during XMRV infection of human cells. This is the first report demonstrating the regulation of miR193a-3p and miRPlus-E1245 during XMRV infection in four different human cell types. Two prostate cancer cell lines (LNCaP and DU145) and two primary cells (peripheral blood lymphocytes (PBLs) and monocyte-derived macrophages (MDMs)) were infected with XMRV. Total mRNA was extracted from mock- and virus-infected cells at 6, 24 and 48 hours post-infection in duplicates and evaluated for microRNA profile in a microarray. Each test sample RNA was labeled with Hy3 and the reference pool (made by pooling all 24 test samples in each run) was labeled with Hy5.
2012-05-05 | E-GEOD-37786 | biostudies-arrayexpress
Project description:The aim was to determine the effect of heme oxygenase-1 (HO-1) overexpression on microRNA transcriptome in human non-small cell lung carcinoma cell line (NCI-H292). Since the cells of different HO-1 genotypes were used (cells are after retroviral transduction with empty vector with normal level of HO-1 or retroviral transduction with vector harboring HO-1), it is possible get the comprehensive answer which microRNAs are regulated by HO-1. Confluent NCI-H292 cells that contain EV-ctrl or overexpressing HO-1. Pool of reference cells are cells untreated and treated with 10 ng/ml TNF-M-NM-1 for 6 hours before RNA isolation. The samples are biological triplicates - three independent experiments were performed at different time points for all cell lines. Total number of the presented samples is 6.
2013-04-27 | E-GEOD-37779 | biostudies-arrayexpress
Project description:MicroRNA expression in the mouse eye.MicroRNAs (miRNAs) are key regulators of biological processes. To define miRNA function in the eye, it is essential to determine a high-resolution profile of their spatial and temporal distribution. In this report, we present the first comprehensive survey of miRNA expression in ocular tissues, using both microarray and RNA in situ hybridization (ISH) procedures. We initially determined the expression profiles of miRNAs in the retina, lens, cornea and retinal pigment epithelium of the adult mouse eye by microarray. Each tissue exhibited notably distinct miRNA enrichment patterns and cluster analysis identified groups of miRNAs that showed predominant expression in specific ocular tissues or combinations of them. Next, we performed RNA ISH for over 220 miRNAs, including those showing the highest expression levels by microarray, and generated a high-resolution expression atlas of miRNAs in the developing and adult wild-type mouse eye, which is accessible in the form of a publicly available web database. We found that 122 miRNAs displayed restricted expression domains in the eye at different developmental stages, with the majority of them expressed in one or more cell layers of the neural retina . This analysis revealed miRNAs with differential expression in ocular tissues and provided a detailed atlas of their tissue-specific distribution during development of the murine eye. The combination of the two approaches offers a valuable resource to decipher the contributions of specific miRNAs and miRNA clusters to the development of distinct ocular structures. microRNA profiling of ocular tissues from mouse. In particular we analysed the cornea, lens, Retina Pigment Epithelium (RPE) and retina and compared them against RNA extracted from the entire eye. The purpose of this experiment was to understand which microRNAs are present nd/or show differential expression in the various structures of the eye (cornea, lens, RPE, retina). The samples numbered 1 & 2 (i.e. CORNEA1, CORNEA2 etc ) are biological replicates, prepared from tissues dissecyed from different groups of wild-type animals. RNA extracted from the entire eye (EYE) served as the unique reference sample. For each tissue to be analysed we performed the following hybridizations: - 2 slides for lens (LENS1, LENS2) vs entire eye (EYE) - 2 slides for RPE (RPE1, RPE2) vs entire eye (EYE) - 2 slides for retina (RETINA1, RETINA2) vs entire eye (EYE) - 2 slides for cornea (CORNEA1, CORNEA2) vs entire eye (EYE) - 1 slide for entire eye (EYE) vs entire eye (EYE)
2010-11-22 | E-GEOD-22882 | biostudies-arrayexpress
Project description:Focal ischemia is triggered by the sudden significant reduction of blood supply to the brain, as a result of either the rupture or occlusion by thrombus/embolism of a blood vessel in the brain. Permanent focal ischemia occurred when blood supply to a specific part of the brain is impeded without reperfusion. Despite major steps achieved in the elucidation of the patho-physiology of cerebral ischemia, the available therapeutic avenues for acute ischemic stroke remain scarce. Cell cycle re-activation has been revealed as a novel signaling pathway during permanent focal ischemia. As such, non-specific aurora kinase inhibitor ZM447439, has been injected intracranial-ventricularly 30min post-ischemia induction to determine its efficacy in reduction of neuronal damage in terms of infarct volume. miRNA microarray analysis was performed on Exiqon 5th generation - hsa, mmu & rno (Product no: 208300-A) to compliment our existing gene expression microarray data [GSE23651]. Arrays were run as dual colour (Hy3: Sample, and Hy5: Common sample reference pool). Right cortex RNA samples were collected at two time-points (8h and 24h )respectively for all three experimental conditions: Sham (n=4), vehicle (i.e. ischemic injury with i.c.v. injection 80% DMSO; n=4) and treatment (injury plus i.c.v.injection of 30mM ZM447439 in 80% DMSO; n=4). Supplementary file: Project_Summary_Report.txt The percentages listed in the top row are present-call rates, i.e. number of identified miRNAs compared to number of miRNAs on array.
2013-12-31 | E-GEOD-25556 | biostudies-arrayexpress
Project description:This SuperSeries is composed of the SubSeries listed below. Refer to individual Series
2015-02-01 | E-GEOD-62372 | biostudies-arrayexpress
Project description:To determine if treatment with a combined therapeutic regimen, which resulted in clinical benefit in a subset of patients in a clinical trial, alters miRNA expression in a way that may be used to guide treatment with these agents and to identify miRNAs that may be involved in the mechanism of action of this regimen Three-condition experiment, untreated tissue, post-temsirolimus alone treatment, post combination-treatment tissue. 33 total samples, including 5 samples resubmitted for quality control.
2013-03-08 | E-GEOD-37131 | biostudies-arrayexpress
Project description:We performed global microRNA expression profiling of a cohort of primary melanoma patient samples linked to a well-annotated clinical database. The goal of this study was to identify microRNA that are associated to or correlated with various clinical parameters and patient outcomes. Candidate microRNA were identified for building prognostic models and functional testing. 119 primary melanoma samples were analyzed in two color arrays. The reference sample used was an equal combination of all samples analyzed. By this design, ratio data of test sample/reference is mean-centered data.
2015-02-01 | E-GEOD-62371 | biostudies-arrayexpress
Project description:This SuperSeries is composed of the SubSeries listed below. Refer to individual Series
2013-12-31 | E-GEOD-25676 | biostudies-arrayexpress
Project description:We performed global microRNA expression profiling of a cohort of primary melanoma patient samples linked to a well-annotated clinical database. The goal of this study was to identify microRNA that are associated to or correlated with various clinical parameters and patient outcomes. Candidate microRNA were identified for building prognostic models and functional testing. 92 primary melanoma (well-annotated with long clinical follow-up) and 9 congenital nevi samples were analyzed to Exiqon miRCURY two color arrays. The reference sample used was an equal combination of all samples analyzed. By this design, ratio data of test sample/reference is mean-centered data.
2015-02-01 | E-GEOD-62370 | biostudies-arrayexpress