RhoGDIbeta (ARHGDIB) is often expressed in tumor cells. It negatively regulates Rho-GTPases, but may have other functions as well. To analyze its effect on gene expression, RhoGDIbeta was suppressed by RNA interference in MDA-MB-231 breast cancer cells and changes in gene expression monitored by cDNA microarrays.
Cyclooxygenase-2 is a target gene of rho GDP dissociation inhibitor beta in breast cancer cells.
No sample metadata fields
View SamplesAlternative splicing analysis after treatment with three clinically aproved drugs
Rapid-response splicing reporter screens identify differential regulators of constitutive and alternative splicing.
Cell line, Treatment
View SamplesOne goal of viral infection is to reprogram the host cell to optimize viral replication. As part of this process, viral miRNAs may compete for components of the miRNA/siRNA pathway as well as regulate cellular targets. Mouse Cytomegalovirus has been described to generate large numbers of viral miRNAs during lytic infection and was therefore used to analyze the impact of viral miRNAs on the host cell small RNA system as well as to check for sorting of viral small RNAs into specific Ago-proteins. Deep sequencing analysis of MCMV infected cells revealed that viral miRNAs represent only app. 13% of all detected miRNAs. All previously described MCMV miRNAs with the exception of miR-m88-1* were confirmed and for the MCMV miR-m01-1 hairpin an additional miRNA, designated miR-m01-1-3p, was found. Its presence was confirmed by qPCR and Northern Blot. Deep sequencing after RISC IP with antibodies specific for either Ago1 or Ago2 showed that all MCMV miRNAs are loaded into both RISC complexes. The ratio of MCMV to mouse miRNAs was not increased after immunoprecipitation of Ago-proteins. Viral miRNAs therefore do not overwhelm the host miRNA processing system nor are they preferentially incorporated into RISC. We found that 3 mouse miRNAs showed an altered expression due to MCMV infection. Down-regulation of miR-27a, as previously described, could be confirmed. In addition, miR-26a was down-regulated and an up-regulation of miR-7a dependent on viral protein expression could be observed. Overall design: Examination of small RNA expression in uninfected vs. infected cells, immunoprecipitation + sequencing of Ago1 and Ago2 loaded small RNAs in infected cells
Murine cytomegalovirus infection of cultured mouse cells induces expression of miR-7a.
Specimen part, Cell line, Subject
View Sampleswe performed RNA sequencing analysis using 10 tissue samples from human prostate and evaluated efficiency and accuracy of eRNA on mRNA-seq data analysis. Overall design: We sequenced mRNAs from the 10 human tissue samples. After that, we identified mRNAs in these samples against known human genes.
eRNA: a graphic user interface-based tool optimized for large data analysis from high-throughput RNA sequencing.
No sample metadata fields
View SamplesTo gain a deep understanding of mRNA turnover dynamics in mammalian cells, we pulse labeled newly synthesized RNA in 3t3 cells for 2 h with 4sU. RNA samples were fractionated into the newly synthesized and pre-existing fractions. Both fractions and the total RNA sample were analyzed by mRNA sequencing. We estimated mRNA half-lives based on the ratios of newly synthesized RNA/total RNA ratio and the preexisting RNA/total RNA.
Global quantification of mammalian gene expression control.
No sample metadata fields
View SamplesThis project looks into experimentally identifying all minor introns by knocking down the minor spliceosome''s catalytic snRNP, U6atac. Overall design: Knockdown of U6atac by antisense morpholino followed by examining mRNA splicing by RNA-seq
Minor introns are embedded molecular switches regulated by highly unstable U6atac snRNA.
Specimen part, Cell line, Subject
View SamplesThis SuperSeries is composed of the SubSeries listed below.
RNA sequencing and transcriptome arrays analyses show opposing results for alternative splicing in patient derived samples.
Specimen part
View SamplesHere we compared the performance of Affymetrix HTA 2.0 microarray and Illumina 2000 RNA-sequencing techniques on the clinical samples collected from patients with lung squamous cell carcinoma.
RNA sequencing and transcriptome arrays analyses show opposing results for alternative splicing in patient derived samples.
Specimen part
View SamplesImmunoprecipitation of EGFR from irradiated A549 (ATCC CCL185) cells was performed in order to characterize bound mRNA species with the help of microarray analysis
New roles for nuclear EGFR in regulating the stability and translation of mRNAs associated with VEGF signaling.
Cell line, Treatment
View SamplesCellular circular RNAs (circRNAs) are generated by head-to-tail splicing and are present in all multicellular organisms studied so far. Recently, circRNAs have emerged as large class of RNA which can function as post-transcriptional regulators. It has also been shown that many circRNAs are tissue- and stage specifically expressed. Moreover, the unusual stability and expression specificity make circRNAs important candidates for clinical biomarker research. Here, we present a circRNA expression resource of twenty human tissues highly relevant to disease-related research: vascular smooth muscle cells (VSMCs), human umbilical vein (HUVECs), artery endothelial cells (HUAECs), atrium, vena cava, neutrophils, platelets, cerebral cortex, placenta, and samples from mesenchymal stem cell differentiation. In eight different samples from a single donor, we found highly tissue-specific circRNA expression. Circular-to-linear RNA ratios revealed that many circRNAs were higher expressed than their linear host transcripts. Among the 65 validated circRNAs, we noticed potential biomarkers. In adenosine deaminase-deficient, severe combined immunodeficiency (ADA-SCID) patients and in Wiskott-Aldrich-Syndrome (WAS) patients' samples, we found evidence for differential circRNA expression of genes that are involved in the molecular pathogenesis of both phenotypes. Our findings underscore the need to assess circRNAs in mechanisms of human disease. Overall design: To explore circRNA expression patterns in human tissues, we performed rRNA-depleted RNA sequencing and circRNA detection in twenty clinically relevant samples.
A map of human circular RNAs in clinically relevant tissues.
Specimen part, Disease, Subject
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