Cytoplasmic mRNA and Heavy polysome-associated mRNAs from U251 Cells treated with Control or eIF3e siRNAs
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PROVIDER: PRJNA662223 | ENA |
REPOSITORIES: ENA
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Project description:Transcriptional profiling of Cytoplasmic mRNA and Heavy polysome-associated mRNAs extracted from U251 Cells treated with control siRNA or siRNA targeting eIF3e . Goal was to determine the effect of eIF3e knockdown on translation of specific mRNAs.
2020-09-09 | GSE157608 | GEO
Project description:RNA helicase A (RHA) binds its target transcripts at the post-transcriptional control element (PCE) located in the 5â?? untranslated region (UTR). This interaction represents an â??RNA switchâ?? that regulates protein synthesis. Down regulation of RHA by siRNAs was used to identify transcripts with RHA-dependent translation. Reduced accumulation of RNA in polysomes was monitored with microarrays. Changes in cytoplasmic RNA steady state abundance was monitored as well. Sixty nine genes exhibit decreased transcript polysome association when subjected to RHA downregulation. A majority of the transcripts that experienced a reduction in the polysome fraction had no significant change in their cytoplasmic abundance (45 genes). Keywords: gene expression array-based Cytoplasmic lysates of cells treated with RHA targeted or non-silencing control siRNAs were separated by sucrose density gradient centrifugation. Ribosomal RNA profiles were generated, fractions containing polysomes were collected, and RNA was extracted.
2010-05-15 | E-GEOD-14055 | biostudies-arrayexpress
Project description:RNA helicase A (RHA) binds its target transcripts at the post-transcriptional control element (PCE) located in the 5’ untranslated region (UTR). This interaction represents an “RNA switch” that regulates protein synthesis. Down regulation of RHA by siRNAs was used to identify transcripts with RHA-dependent translation. Reduced accumulation of RNA in polysomes was monitored with microarrays. Changes in cytoplasmic RNA steady state abundance was monitored as well. Sixty nine genes exhibit decreased transcript polysome association when subjected to RHA downregulation. A majority of the transcripts that experienced a reduction in the polysome fraction had no significant change in their cytoplasmic abundance (45 genes). Keywords: gene expression array-based
2008-12-20 | GSE14055 | GEO
Project description:we performed microarray expression profiling to analyze the differentially expressed genes between U251-shCtrl and U251-shCPVL cells.
2024-11-01 | GSE188414 | GEO
Project description:Human histomonocytic U937 cells exhibit macrophage-like properties after phorbol ester stimulation. Accumulating evidence demonstrated that remarkable number of transcripts changed in their amount at total RNA levels. However, post-transcriptional regulation has not been fully elucidated in this model. Thus, we compared expression profiles between polysomal and cytoplasmic RNAs before and after phorbol 12-myristate 13-acetate stimulation (48h, 32nM). Table 1: Detailed description of the expression data of human histomonocytic cell line U937 cells. Data of total cytoplasmic and polysomal fractions before and after PMA stimulation is shown. This table contains all spot data except: 1) saturated spots, 2) undetectable spots, 3) stained spots, and 4) spots only detected in less than one samples. Column A: Gene symbol (âI_xxxxxxâ is corresponding to EST clones); Column B: Genbank accession no. Column C: Description; Column D: Average value of expression levels in total cytoplasmic fraction in the absence of PMA; Column E: Average value of expression levels in total cytoplasmic fraction in the presence of PMA (32nM, 48h); Column F: Average value of expression levels in polysomal fraction in the absence of PMA; Column G: Average value of expression levels in polysomal fraction in the presence of PMA; Column H: Expression ratio of polysome, PMA (-) to cytoplasm, PMA(-); Column I: Expression ratio of polysome, PMA (+) to cytoplasm, PMA(+); Column J: Expression ratio of cytoplasm, PMA (+) to cytoplasm, PMA(-); Column K: Expression ratio of polysome, PMA (+) to polysome, PMA(-); Column L: Different expression between polysome, PMA (-) and cytoplasm, PMA(-): different=1; Column M: Different expression between polysome, PMA (+) and cytoplasm, PMA(+): different=1; Column N: Different expression between cytoplasm, PMA (+) and cytoplasm, PMA(-): different=1; Column O: Different expression between polysome, PMA (+) and polysome, PMA(-): different=1; ; Table 2: Candidates post-transcriptionally regulated by PMA. We extracted 105 transcripts whose expression levels were altered only in either fraction accompanied by changes in polysome/cytoplasm expression ratio. Column A: Gene symbol (âI_xxxxxxâ is corresponding to EST clones); Column B: Genbank accession no. Column C: Description; Column D: Average value of expression levels in total cytoplasmic fraction in the absence of PMA; Column E Average value of expression levels in total cytoplasmic fraction in the presence of PMA; Column F: Average value of expression levels in polysomal fraction in the absence of PMA; Column G: Average value of expression levels in polysomal fraction in the presence of PMA; Column H: Expression ratio of polysome, PMA (-) to cytoplasm, PMA(-); Column I: Expression ratio of polysome, PMA (+) to cytoplasm, PMA(+); Column J: Expression ratio of cytoplasm, PMA (+) to cytoplasm, PMA(-); Column K: Expression ratio of polysome, PMA (+) to polysome, PMA(-)
2008-06-11 | E-GEOD-1783 | biostudies-arrayexpress
Project description:Human histomonocytic U937 cells exhibit macrophage-like properties after phorbol ester stimulation. Accumulating evidence demonstrated that remarkable number of transcripts changed in their amount at total RNA levels. However, post-transcriptional regulation has not been fully elucidated in this model. Thus, we compared expression profiles between polysomal and cytoplasmic RNAs before and after phorbol 12-myristate 13-acetate stimulation (48h, 32nM). Table 1: Detailed description of the expression data of human histomonocytic cell line U937 cells. Data of total cytoplasmic and polysomal fractions before and after PMA stimulation is shown. This table contains all spot data except: 1) saturated spots, 2) undetectable spots, 3) stained spots, and 4) spots only detected in less than one samples. Column A: Gene symbol (“I_xxxxxx” is corresponding to EST clones) Column B: Genbank accession no. Column C: Description Column D: Average value of expression levels in total cytoplasmic fraction in the absence of PMA Column E: Average value of expression levels in total cytoplasmic fraction in the presence of PMA (32nM, 48h) Column F: Average value of expression levels in polysomal fraction in the absence of PMA Column G: Average value of expression levels in polysomal fraction in the presence of PMA Column H: Expression ratio of polysome, PMA (-) to cytoplasm, PMA(-) Column I: Expression ratio of polysome, PMA (+) to cytoplasm, PMA(+) Column J: Expression ratio of cytoplasm, PMA (+) to cytoplasm, PMA(-) Column K: Expression ratio of polysome, PMA (+) to polysome, PMA(-) Column L: Different expression between polysome, PMA (-) and cytoplasm, PMA(-): different=1 Column M: Different expression between polysome, PMA (+) and cytoplasm, PMA(+): different=1 Column N: Different expression between cytoplasm, PMA (+) and cytoplasm, PMA(-): different=1 Column O: Different expression between polysome, PMA (+) and polysome, PMA(-): different=1 Table 2: Candidates post-transcriptionally regulated by PMA. We extracted 105 transcripts whose expression levels were altered only in either fraction accompanied by changes in polysome/cytoplasm expression ratio. Column A: Gene symbol (“I_xxxxxx” is corresponding to EST clones) Column B: Genbank accession no. Column C: Description Column D: Average value of expression levels in total cytoplasmic fraction in the absence of PMA Column E Average value of expression levels in total cytoplasmic fraction in the presence of PMA Column F: Average value of expression levels in polysomal fraction in the absence of PMA Column G: Average value of expression levels in polysomal fraction in the presence of PMA Column H: Expression ratio of polysome, PMA (-) to cytoplasm, PMA(-) Column I: Expression ratio of polysome, PMA (+) to cytoplasm, PMA(+) Column J: Expression ratio of cytoplasm, PMA (+) to cytoplasm, PMA(-) Column K: Expression ratio of polysome, PMA (+) to polysome, PMA(-) Keywords = phorbol ester Keywords = macrophage Keywords = polysome Keywords = post-transcriptional regulation Keywords: parallel sample
2004-11-01 | GSE1783 | GEO
Project description:To investigate the function of COL8A1 in GSCs progression, we established U251-COL8A1 cell lines with COL8A1 overexpressed. Then we performed gene expression profiling analysis using data obtained from RNA-seq of 2 cells (U251NC and U251-COL8A1)
2024-07-01 | GSE246528 | GEO
Project description:Microarray comparisons of polysome loading in wild-type Arabidopsis and eif3h mutant Goal: To find the target mRNAs that are translationally regulated by eIF3h. BACKGROUND: The eukaryotic translation initiation factor eIF3 has multiple roles during the initiation of translation of cytoplasmic mRNAs. However, the contributions of individual subunits of eIF3 to the translation of specific mRNAs remain poorly understood. RESULTS: Working with stable reporter transgenes in Arabidopsis thaliana it was demonstrated that the h subunit of eIF3 contributes to the efficient translation initiation of mRNAs harboring upstream open reading frames (uORFs) in their 5’ leader sequence. uORFs, which can function as devices for translational regulation, are present in over 30% of Arabidopsis mRNAs, and are enriched among mRNAs for transcriptional regulators and protein modifying enzymes. Microarray comparisons of polysome loading in wild-type and eif3h mutant plants revealed that eIF3h generally helps to maintain efficient polysome loading of mRNAs harboring multiple uORFs. Independently, eIF3h also boosted polysome loading of mRNAs with long coding sequences. Moreover, the lesion in eIF3h revealed a concerted upregulation of translation for specific functional subgroups of mRNAs, including ribosomal proteins and proteins involved in photosynthesis. CONCLUSIONS: The intact eIF3h protein contributes to efficient translation initiation on 5’ leader sequences harboring multiple uORFs, although mRNA features independent of uORFs were also implicated. Moreover, our data suggest that regulons of translational control can be revealed by mutations in generic translation initiation factors. Keywords: mutant, polysome, non-polysome
2007-05-01 | GSE6024 | GEO
Project description:Expression data from U251-shCtrl and U251-shCPVL cells
| PRJNA778755 | ENA
Project description:U251 cells were treated with Vinblastine or Taxol and phosphotyrosine signaling was measured.
2018-11-30 | PXD008939 | Pride