Browse
Submit Data
Databases
API
Help

Unknown,Transcriptomics,Genomics,Proteomics

Dataset Information

0 Views

0 Connections

0 Citations

0 Reanalyses

0 Downloads

Omics score: 0

Analysis of Pro-Inflammatory Gene Activation and RNA Processing by RNAseq of Nascent Transcripts

ABSTRACT: We examined pro-inflammatory gene activation in activated murine macrophages by performing RNA-Seq with fractionated chromatin-associated, nucleoplasmic, and cytoplasmic transcripts. This experimental strategy allowed a global, high-resolution analysis of the transcriptional regulation of diverse classes of co-expressed genes, with a direct comparison to transcript processing and the transit of RNA from the chromatin to the nucleoplasm and the cytoplasm. The results provide quantitative insights into the relationship between transcription and distinct promoter and chromatin properties, as well as genome-scale insights into RNA processing and dynamics. RNA-seq of subcelluar fractions from five stimulation time-points

ORGANISM(S): Mus musculus

SUBMITTER: Stephen Smale

PROVIDER: E-GEOD-32916 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

ACCESS DATA

Json Xml

Similar Datasets

Analysis of Pro-Inflammatory Gene Activation and RNA Processing by RNAseq of Nascent Transcripts I

Project description:We examined pro-inflammatory gene activation in activated murine macrophages by performing RNA-Seq with fractionated chromatin-associated, nucleoplasmic, and cytoplasmic transcripts. This experimental strategy allowed a global, high-resolution analysis of the transcriptional regulation of diverse classes of co-expressed genes, with a direct comparison to transcript processing and the transit of RNA from the chromatin to the nucleoplasm and the cytoplasm. The results provide quantitative insights into the relationship between transcription and distinct promoter and chromatin properties, as well as genome-scale insights into RNA processing and dynamics.

2012-05-03 | GSE32916 | GEO

RNA Polymerase II CoTC Terminator Elements in the Human Genome (CstF-64 CLIP-seq from the nucleoplasm)

Project description:CLIP-seq experiment using immunoprecipitation with CstF-64 antibody from the nucleoplasmic fraction, was employed to specifically target pre-mRNAs that are released from the DNA template before cleavage at the poly(A) site. This lead to the identification of genes that utilize the co-transcriptional cleavage mechanism of transciption termination.

2013-02-14 | E-MTAB-1375 | biostudies-arrayexpress

Functional interaction of chromatin with nucleoporins in Drosophila

Project description:Nuclear pore complexes (NPCs) mediate transport across the nuclear envelope. In yeast, they have also been proposed to interact with active genes, attracting or retaining them at the nuclear periphery. However, some NPC components (nucleoporins) in higher eukaryotes are also found in the nucleoplasm, with so far unknown function. Therefore, we have functionally distinguished between nucleoporin-chromatin interactions at the NPC and within the nucleoplasm in Drosophila. For this we analyzed genomic interactions of full-length nucleoporins Nup98, Nup50 and Nup62 and nucleoplasmic and NPC-tethered forms of Nup98. We found that nucleoporins predominantly interacted with transcriptionally active genes inside the nucleoplasm. A smaller set of non-active genes interacted with the NPC. We identified a direct role for nucleoplasmic Nup98 in stimulating gene expression, as genes downregulated upon Nup98 depletion were activated upon nucleoplasmic Nup98 overexpression and showed strong nucleoplasmic Nup98 interaction. Thus, nucleoporins stimulate gene expression away from the NPC by interacting with genes inside the nucleoplasm.

2010-03-01 | GSE19307 | GEO

ANP32e binds histone H2A.Z in a cell cycle-dependent manner and regulates its protein stability in the cytoplasm

Project description:ANP32e, a chaperone of H2A.Z, is receiving increasing attention because of its link to cancer growth and progression. An unanswered question is whether ANP32e regulates H2A.Z dynamics during the cell cycle; if so, this could have clear implications for the proliferation of cancer cells. Using the human U2OS cancer cell line model system, we have confirmed that ANP32e regulates the growth of these cells. ANP32e preferentially interacts with H2A.Z during G1 phase of the cell cycle. Unexpectedly, however, ANP32e does not mediate the removal of H2A.Z from chromatin, is not a stable component of the p400 remodeling complex, and is not strongly associated with chromatin. Instead, most ANP32e is in the cytoplasm. Here, ANP32e preferentially interacts with H2A.Z in G1 phase in response to an increase in H2A.Z protein abundance and regulates its protein stability. This G1-specific interaction between ANP32e and H2A.Z is also observed in the nucleoplasm but is unrelated to any change in H2A.Z abundance. Collectively, these results challenge the idea that ANP32e is involved in regulating the abundance of H2A.Z in chromatin as part of a chromatin remodeling complex. Rather, we propose that ANP32e acts as a molecular chaperone that maintains the soluble pool of H2A.Z by regulating its protein stability and acting as a buffer in response to cell cycle-dependent changes in H2A.Z abundance.

2024-05-23 | PXD033229 | Pride

Chromatin phosphoproteomics unravels a function for AT-hook motif nuclear localized protein AHL13 in PAMP-triggered immunity

Project description:Mitogen-activated protein kinases constitute essential signaling mechanisms linking external signal perception to gene expression in all eukaryotes. In Arabidopsis, MAPKs are found in the cytoplasmic and nuclear compartments, but no nuclear phosphoproteomic studies of mapk mutants were performed so far. In this work, we report a panel of nuclear and chromatin-associated targets by performing phosphoproteome analyses of wild-type and mpk3, mpk4, and mpk6 mutant plants. Since the three MAPKs play a role in cell division, development and innate immunity, we also analyzed the phosphoproteomes following microbe-associated molecular pattern (MAMP) treatment. A total of 165 proteins were identified to be differentially phosphorylated when compared between genotypes and in response to MAMP treatment. Using different criteria, including different biochemical and interaction assays, a number of the putative MAPK substrates were validated as true substrates for different MAPKs. Signaling networks for the three MAPKs revealed their common role in RNA transcription, RNA processing and chromatin organization, but also specific roles in development and organelle organization. Overall, this study unravels a set of chromatin-associated targets for these three MAPKs and promises novel insights into yet undiscovered domains linking MAPK signaling to a number of chromatin-related events.

2021-01-07 | PXD009823 | Pride

Adaptive partitioning of a gene locus to the nuclear envelope in Saccharomyces cerevisiae is driven by polymer-polymer phase separation

Project description:Partitioning of active gene loci to the nuclear envelope is a key mechanism by which organisms can increase the speed of adaptation and metabolic robustness to fluctuating resources in the environment. In the budding yeast Saccharomyces cerevisiae, adaptation and transcriptional memory induced by nutrient depletion or other stresses, results from relocalization of active gene loci from nucleoplasm to the nuclear envelope, leading to increased transport of mRNAs to the cytosol and their translation. The mechanism by which this translocation occurs remains a mystery. We show here, that for the inositol depletion-responsive gene locus INO1 in yeast, translocation to the nuclear envelope is caused by a local phase transition of the mechanical stiffness of chromatin surrounding activated INO1 that favors phase separation of the active gene locus into low density regions of chromatin proximal to the nuclear envelope. Gene regulatory elements essential to translocation encode binding sites for histone acetyl transferases, which are necessary for chromatin decompaction. INO1 locus partitioning can be explained by a phenomenological model of chromatin decompaction, which reflects stiffening of chromatin and its partitioning into a dilute chromatin phase adjacent to the nuclear envelope, from the dense chromatin found in the nucleoplasmic phase. Recent evidence suggests that this demixing of chromatin could be due to the dissolution of multivalent chromatin interactions mediated by histone post-translational modifications.

2023-03-01 | PXD029913 | Pride

Post-transcriptional Gene Silencing Mediated by microRNAs is Controlled by Nucleoplasmic Sfpq [RNA-Seq]

Project description:There is a growing body of evidence about the presence and the activity of the miRISC in the nucleus of mammalian cells. Here, we show by quantitative proteomic analysis that Ago2 interacts with nucleoplasmic Sfpq in a RNA-dependent fashion. By HITS-CLIP and transcriptomic analyses, we demonstrated that Sfpq directly controls the miRNA targeting of a subset of crucial miRNA-target mRNAs when it binds locally. Sfpq modulates miRNA targeting in both nucleoplasm and cytoplasm, indicating a nucleoplasmic imprinting of Sfpq-target mRNAs that influence miRNA targeting in both cellular compartments. Mechanistically, Sfpq binds to a sizeable set of long 3’UTR forming long aggregates to optimize miRNA position/recruitment to selected binding sites, as we show for Lin28A mRNA. These results extend the miRNA-mediated post-transcriptional gene silencing into the nucleoplasm and indicate that an unique Sfpq-dependent post-transcriptional strategy for controlling both nuclear and cytoplasmic gene expression takes place in cells during physio-pathological events.

2017-10-20 | GSE89032 | GEO

Post-transcriptional Gene Silencing Mediated by microRNAs is Controlled by Nucleoplasmic Sfpq [RIP-Seq]

2017-10-20 | GSE89031 | GEO