ASF1
Ontology highlight
ABSTRACT:
ORGANISM(S): Homo sapiens
SUBMITTER: Daniel Lackner
PROVIDER: E-MTAB-1909 | biostudies-arrayexpress |
REPOSITORIES: biostudies-arrayexpress
Similar Datasets
Project description:Pre-mRNA splicing is regulated through combinatorial activity of RNA motifs including splice sites and splicing regulatory elements (SREs). Here, we show that the activity of a major class of mammalian SREs is highly sensitive to the strength of the adjacent 5' splice site (5'ss) sequence, and that this has important functional and evolutionary implications. Activity of G-run SREs was higher for intermediate strength 5'ss by ~4-fold relative to weak 5'ss, and by ~1.3-fold relative to strong 5'ss. The dependence on 5'ss strength was supported both by comparative genomics and by microarray and Illumina mRNA-Seq analyses of splicing changes following RNAi against the splicing factor heterogeneous nuclear ribonucleoprotein (hnRNP) H, which binds G-runs. This dependence implies that the responsiveness of exons to changes in hnRNP H levels is a bivariate function of both SRE abundance and 5'ss strength; this relationship may hold also for other splicing factors. This pattern of activity enables G-runs and hnRNP H to buffer the effects of 5'ss mutations, augmenting both the frequency of 5'ss polymorphism and the evolution of new splicing patterns. Examine mRNA expression in 293T cells following hnRNP H or control siRNA knockdown
2009-09-12 | E-GEOD-16642 | biostudies-arrayexpress
Project description:Potential vorinostat-resistance candidate genes were identified using RNA interference screening in vorinostat-resistant HCT116 cells (HCT116-VR) using a synthetic lethal approach. In order to understand the mechanisms by which these genes contributed to vorinostat response, transcriptomic analysis was conducted on HCT116-VR cells and those with siRNA-mediated knockdown of each of the vorinostat resistance candidate genes. There are 45 samples in total, from triplicate independent biological experiments of 15 samples each. The negative control to which all gene knockdowns are compared is the mock transfection control (mock).
2014-07-07 | E-GEOD-56788 | biostudies-arrayexpress
Project description:We identified LAMP3 as a key driver gene of anti-viral subnetwork genes in cervical cancer patients. Therefore we tested this prediction using an in vitro system. This is the first direct demonstration of LAMP3 regulatory role in interferon-dependent immune response. We first pretreated HeLa cells with control siRNA or LAMP3 siRNA overnight and then added 1 ng/ml of interferon alpha to the cultures for 3 and 4 days
2011-12-29 | E-GEOD-29009 | biostudies-arrayexpress
Project description:To systematically explore the functions of core splicing factors and regulators in alternative splicing, RNA-seq analyses were carried out upon the knockdown of over 305 splicing-related factors.
2023-12-30 | E-MTAB-11202 | biostudies-arrayexpress
Project description:Abstract: Alternative splicing (AS) plays a major role in the generation of proteomic diversity and in gene regulation. However, the role of the basal splicing machinery in regulating AS remains poorly understood. Here we show that the core snRNP protein SmB/B’ self-regulates its expression by promoting the inclusion of a highly-conserved alternative exon in its own pre-mRNA that targets the spliced transcript for nonsense-mediated mRNA decay (NMD). Depletion of SmB/B’ in human cells results in reduced levels of snRNPs and in a striking reduction in the inclusion levels of hundreds of alternative exons, with comparatively few effects on constitutive exon splicing levels. The affected alternative exons are enriched in genes encoding RNA processing and other RNA binding factors, and a subset of these exons also regulate gene expression by activating NMD. Our results thus demonstrate a role for the core spliceosomal machinery in controlling an exon network that appears to modulate the levels of many RNA processing factors. HeLa cells were transfected with a control non-targeting siRNA pool (siNT), or with siRNA pools designed to knockdown SmB/B' or SRSF1 (also known as SF2/ASF/SFRS1). Sequence reads were aligned to exon-exon junction sequences in a database of EST/cDNA-mined cassette-type alternative splicing events. Processed data files (.bed and .txt) provided as supplementary files on the Series record. Processed data file build information: hg18.
2011-02-01 | E-GEOD-26463 | biostudies-arrayexpress
Project description:This SuperSeries is composed of the following subset Series: GSE27869: Gene expression profiles of 400 siRNA knocked down on HUVEC GSE27870: The effect of TNFa on endothelial cells Refer to individual Series
2011-11-29 | E-GEOD-27871 | biostudies-arrayexpress
Project description:Transcriptome analysis was conducted on vorinostat resistant HCT116 cells (HCT116-VR) upon knockdown of potential vorinostat resistance candidate genes in the presence and absence of vorinostat. Potential vorinostat resistance candidate genes chosen for this study were GLI1 and PSMD13, which were identified through a genome-wide synthetic lethal RNA interference screen. To understand the transcriptional events underpinning the effect of GLI1 and PSMD13 knockdown (sensitisation to vorinostat-induced apoptosis), cells were first subjected to gene knockdown, then to treatment with vorinsotat or the solvent control. Two timepoints for drug treatment were assessed: a timepoint before induction of apoptosis (4hrs for siGLI1 and 8hrs for siPSMD13) and a timepoint when apoptosis could be detected (8hrs for siGLI1 and 12hrs for siPSMD13). There are 42 samples in total, from triplicate independent biological experiments of 14 samples each.
2016-06-30 | E-GEOD-57871 | biostudies-arrayexpress
Project description:UBF is an essential RNA Polymerase I (Pol I)-transcription factor. Our research investigates extra roles for UBF in regulation of Pol II gene expression. Our gene expression data identifies genes that are differentially regulated following UBF knockdown by siRNA. RNA was extracted from NIH3T3 cells after 48 hour of transfection with two independent siRNA oligonucleotides targeting UBF, sirEGFP or Mock control. A total of 12 samples were analysed using Affymetrix arrays.We include the expression data from three biological replicate experiments
2014-10-19 | E-GEOD-55461 | biostudies-arrayexpress
Project description:Analysis of differentially expressed genes after siRNA mediated knock-down of the FET-family of proteins; the FUS, EWS, and TAF15 proteins. The FET-proteins are thought to function as transcription factors, and this hypothesis is tested in the present study. Results provide important information of the genes which expression are controlled by the FET-family of proteins. Total RNA obtained HEK293-cells transfected with siRNA targeted against the FUS, EWS, or TAF15 mRNA, or a combination of all three of them. Control cells are transfected with an equal amount of unspecific siRNA without known targets.
2012-02-07 | E-GEOD-35578 | biostudies-arrayexpress
Project description:To test the effect of silencing Rae1 on expression on RNA polymerase II transcripts, host mRNAs were analysed by cDNA microarrays. We hypothesized that if silencing Rae1 expression increases cellular resistance to inhibition of transcription in VSV infected cells, mRNA characteristic of host antiviral response would be increased than compared to cells transfected with control siRNA. HeLa cells transfected with siRNA targeted against Rae1 (siRae1) or against non-targeting siRNA (siNT). The sequence of nontargeting (NT) siRNA is scrambled and does not match any sequence on the human genome. Transfected cells were either infected with VSV or mock infected. Six hours later RNA was extracted from the cells. Two separate experiments of such were analyzed by microarrays
2012-06-28 | E-GEOD-38866 | biostudies-arrayexpress