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Metabolomics,Unknown,Transcriptomics,Genomics,Proteomics

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High-throughput sequencing of pluripotent cells

ABSTRACT: We report HERV-K rec iCLIP-seq binding data, ribosome profiling data, and RNA-seq from ELF1 naïve hESC and RNA-seq from NCCIT cells. HERV-K Rec iCLIP-seq: 2 replicates in NCCIT. Ribosome profiling: 4 replicates each of Rec-overexpressing NCCIT vs. control NCCIT; RNAseq: 3 replicates each of HERV-K Rec siRNA vs. control siRNA in NCCIT; RNA-seq: 3 replicates each of ELF1 naïve hESC vs. primed hESC.

ORGANISM(S): Homo sapiens

SUBMITTER: Edward Grow

PROVIDER: E-GEOD-63570 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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High-throughput sequencing of pluripotent cells

Project description:We report HERV-K rec iCLIP-seq binding data, ribosome profiling data, and RNA-seq from ELF1 naïve hESC and RNA-seq from NCCIT cells.

2015-04-21 | GSE63570 | GEO

Expanded identification and characterization of mammalian circular RNAs

Project description:The recent reports of two circular RNAs (circRNAs) with strong potential to act as microRNA (miRNA) sponges suggest that circRNAs might play important roles in regulating gene expression. However, the global properties of circRNAs are not well understood. We developed a computational pipeline to identify circRNAs and quantify their relative abundance from RNA-seq data. Applying this pipeline to a large set of non-poly(A)-selected RNA-seq data from the ENCODE project, we annotated 7,112 human circRNAs that were estimated to comprise at least 10% of the transcripts accumulating from their loci. Most circRNAs are expressed in only a few cell types and at low abundance, but they are no more cell-type–specific than are mRNAs with similar overall expression levels. Although most circRNAs overlap protein-coding sequences, ribosome profiling provides no evidence for their translation. We also annotated 635 mouse circRNAs, and although 20% of them are orthologous to human circRNAs, the sequence conservation of these circRNA orthologs is no higher than that of their flanking linear exons. The previously proposed miR-7 sponge, CDR1as, is one of only two circRNAs with more miRNA sites than expected by chance, with the next best miRNA-sponge candidate deriving from a primate-specific zinc-finger gene, ZNF91. These results provide a new framework for future investigation of this intriguing topological isoform while raising doubts regarding a biological function of most circRNAs. Examination of 9 samples in 1 cell type Note: The ENCODE data we used are under GEO SuperSeries GSE26284 (all samples labeled "_cell_total"). But they were not used in the processing of the U2OS data.

2014-07-08 | E-GEOD-51584 | biostudies-arrayexpress

Expression data from human embryonic kidney 293 (HEK-293) cells transiently transfected with Human endogenous retrovirus (HERV) (K-HML2) Rec protein compared to empty expression vector control

Project description:HERV-K protein Rec functions as RNA transport protein shuttling unspliced viral genomic RNA from the nucleus to the cytoplasm. Rec was found to be expressed in several tumors and transformed cell lines and contributes to cell transformation by inhibiting the transcription factor Promyelocytic Leukemia Zinc Finger Protein

2019-10-12 | GSE51571 | GEO

Determinants of ribosome density in yeast

Project description:Here, we use ribosome-footprint profiing and mRNA-seq to determine the average ribosome density on each gene in S. cerevisiae. We then perform quantitative modeling to identify the molecular determinants of ribosome density. Analysis of S. cerevisiae

2013-12-19 | E-GEOD-53313 | biostudies-arrayexpress

Nanog, SoxB1 and Pou5f1/Oct4 regulate widespread zygotic gene activation during the maternal-to-zygotic transition

Project description:Upon fertilization, maternal factors direct development in a transcriptionally silent embryo. At the maternal-to-zygotic transition (MZT), a universal step in animal development, unknown maternal factors trigger zygotic genome activation (ZGA). In zebrafish, ZGA is required for gastrulation and clearance of maternal mRNAs, which is achieved in part by the conserved microRNA miR-430. However, the precise factors that activate the zygotic program remain largely unknown. Here we show that Nanog, Pou5f1 and SoxB1 are required for genome activation in zebrafish. We identified several hundred genes directly activated by maternal factors, thus constituting the first wave of zygotic transcription in zebrafish. Ribosome profiling in the pre-MZT embryo revealed that nanog, sox19b and pou5f1 are the most highly translated transcription factor mRNAs. Combined loss of function for Nanog, SoxB1 and Pou5f1 resulted in developmental arrest prior to gastrulation, and a failure to activate >75% of zygotic genes. Furthermore, we found that Nanog binds the miR-430 locus and together with Pou5f1 and SoxB1 initiate miR-430 expression and activity. Our results demonstrate that maternal Nanog, Pou5f1 and SoxB1 are required to initiate the zygotic developmental program and in turn trigger the clearance of the maternal program by activating miR-430 expression. Wild type and loss-of-function total mRNA sequencing of embryonic transcriptomes pre- and post-MZT; ribosome profiling pre-MZT

2013-09-22 | E-GEOD-47558 | biostudies-arrayexpress

Global genomic profiling of p53-regulated genes

Project description:p53 is a critical tumor suppressor and works as a stress-induced transcription factor to induce target genes mediating apoptosis, cell cycle arrest and senescence or other responses. To gain new insights into p53 biology, we used high-throughput sequencing to analyze global p53 transcriptional networks in primary mouse embryo fibroblasts in response to DNA damage. ChIP-sequencing reveals 4785 p53-bound sites in the genome located near 3193 genes involved in diverse biological processes. RNA-sequencing analysis shows that only a subset of p53-bound genes is transcriptionally regulated, yielding a list of 432 p53-bound and regulated genes. Furthermore, we define a list of 1269 basal-p53 regulated genes, of which 253 are p53-bound and basal-p53 regulated. ChIP-seq was performed to determine the genome-wide p53 binding sites in doxorubicin-treated primary MEFs. RNA-seq was used to define differentially expressed genes in response to DNA damage in wild-type and p53-/- MEFs, and basal p53 regulated genes by deriving differentially expressed genes between untreated wild-type and p53-/- MEFs.

2013-04-21 | E-GEOD-46240 | biostudies-arrayexpress

The translational landscape of mTOR signaling steers cancer initiation and metastasis

Project description:The mammalian target of rapamycin (mTOR) kinase is a master regulator of protein synthesis that couples nutrient sensing to cell growth and cancer. However, the downstream translationally regulated nodes of gene expression that may direct cancer development are poorly characterized. Employing ribosome profiling we uncover specialized translation of the prostate cancer genome by oncogenic mTOR signaling, revealing a remarkably specific repertoire of genes involved in cell proliferation, metabolism, and invasion. We extend these findings by functionally characterizing a class of translationally controlled pro-invasion mRNAs that we show direct prostate cancer invasion and metastasis downstream of oncogenic mTOR signaling. We further develop a clinically relevant ATP site inhibitor of mTOR, INK128, which reprograms this gene expression signature with therapeutic benefit for prostate cancer metastasis, for which there is presently no cure. Together, these findings significantly extend our understanding of how the M-bM-^@M-^\cancerousM-bM-^@M-^] translation machinery steers specific cancer cell behaviors and may be therapeutically targeted. Examination of mRNA translation in human prostate cancer upon differential inhibition of the mTOR signaling pathway.

2012-02-28 | E-GEOD-35469 | biostudies-arrayexpress

Regulation of Endogenous Retroviruses and Cellular Genes by HIV-1 Rev [RNA-seq]

Project description:A combination of bioinformatics, RNAseq, and cell-based functional assays were used to study the changes in host cell gene expression when HIV-1 Rev, Tat, Tat and Rev or HERV-K Rec was expressed. These results suggest that HIV Rev is capable of modulating gene and mRNA isoform expression, during HIV-1 infection.

2023-10-31 | GSE160606 | GEO

Regulation of Endogenous Retroviruses and Cellular Genes by HIV-1 Rev [cytoplasmic RNA]

2023-12-07 | GSE162852 | GEO

RNA-seq experiments in human neural crest cells (hNCC)

Project description:Combining an in vitro hNCC differentiation protocol with epigenomic profiling, we provide the first whole-genome characterization of cis-regulatory elements in this highly relevant cell type. With this data at hand, we have characterized the chromatin state and dynamics of all human gene promoters during the course of NCC in vitro differentiation. Most importantly, we have identified a large cohort of active and NCC-specific enhancers, which we showed to be functionally relevant in vivo, in the context of embryonic development. Finally, through sequence analysis of the identified NCC enhancers, we uncovered the orphan nuclear receptors NR2F1 and NR2F2 as novel hNCC transcriptional regulators both in vitro and in vivo. RNA-seq experiments in human neural crest cells (hNCC)

2012-09-13 | E-GEOD-28875 | biostudies-arrayexpress

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