Browse
Submit Data
Databases
API
Help

Dataset Information

0 Views

0 Connections

0 Citations

0 Reanalyses

0 Downloads

Omics score: 0

Chromatin-bound proteins co-localized with CTCF during mES cell neuronal differentiation

ABSTRACT: Using Chromatin immunoprecipitation combined with Selective Isolation of Chromatin Associated Proteins (ChIP-SICAP), we define the chromatin-bound proteins co-localized with CTCF in mouse embryonic stem cells (ES) and neuronal stem (NS) cells. We uncover the proteins that are differentially co-localized with CTCF in ES and NS cells. We show the link between the underlying role of RNA-binding proteins with consolidation of chromatin structure during mammalian development.

INSTRUMENT(S):

ORGANISM(S): Mus Musculus (mouse)

TISSUE(S): Embryonic Stem Cell

SUBMITTER: Mahmoudreza Rafiee

LAB HEAD: Aleksandra Pękowska

PROVIDER: PXD048470 | Pride | 2025-06-13

REPOSITORIES: Pride

ACCESS DATA

Json Xml

Dataset's files

Source:

			Action	DRS
	20160524_QE1_SR_CTCF-2i-NS-R2.raw	Raw
	20160525_QE1_SR_CTCF-2i-NS-R1.raw	Raw
	CTCF-SICAP_2i-NSC_normalized1.xlsx	Xlsx
	checksum.txt	Txt

Items per page:

1 - 4 of 4

Similar Datasets

Architectural protein subclasses shape 3-D organization of genomes during lineage commitment

Project description:Understanding the topological configurations of chromatin can reveal valuable insights into how the genome and epigenome act in concert to control cell fate during development. Here we generate high-resolution architecture maps across seven genomic loci in embryonic stem cells and neural progenitor cells. We observe a hierarchy of 3-D interactions that undergo marked reorganization at the sub-Mb scale during differentiation. Distinct combinations of CTCF, Mediator, and cohesin show widespread enrichment in architecture at different length scales. CTCF/cohesin anchor long-range constitutive interactions that might form the topological basis for invariant sub-domains. Conversely, Mediator/cohesin together with pioneer factors bridge short-range enhancer-promoter interactions within and between larger sub-domains. Knockdown of Smc1 or Med12 in ES cells results in disruption of spatial architecture and down-regulation of genes found in cohesin-mediated interactions. We conclude that cell type-specific chromatin organization occurs at the sub-Mb scale and that architectural proteins shape the genome in hierarchical length scales. Analysis of higher-order chromatin chromatin architecture in mouse ES cells and ES-derived NPCs. Analysis of CTCF and Smc1 occupied sites in ES-derived NPCs.

2013-05-24 | E-GEOD-36203 | biostudies-arrayexpress

Control of Embryonic Stem Cell Lineage Commitment by Core Promoter Factor, TAF3 (ChIP-Seq data)

Project description:We report that TAF3, a TBP-associated core promoter factor, is highly enriched in ES cells. In addition to its role in the core promoter recognition complex TFIID, genome-wide binding studies reveal that TAF3 localizes to chromosomal regions bound by CTCF and cohesin. Enrichment for TAF3/CTCF/cohesin bound regions distinguishes TAF3-activated from TAF3-repressed genes. Our findings support a new role of TAF3 in mediating long-range chromatin regulatory interactions to safeguard the finely-balanced transcriptional programs that give rise to pluripotency. Genome-wide binding of TAF3, TAF1, TBP and PolII assayed by ChIP-Seq.

2011-09-02 | E-GEOD-31270 | biostudies-arrayexpress

Chromatin loops are an ancestral hallmark of the animal regulatory genome

Project description:Chromatin-bound proteome profiling of Mnemiopsis leidyi

2025-03-10 | PXD056500 | Pride

Studying the core circuitry of pluripotency by selective isolation of chromatin-associated proteins

Project description:Here we have developed a method to identify chromatin-bound partners of a protein of interest by selective isolation of chromatin-associated proteins (SICAP) followed by mass spectrometry. We applied SICAP to identify chromatin-binding proteins associated to Oct4, Sox2 and Nanog in mouse embryonic stem (ES) cells.

2016-12-19 | PXD003798 | Pride

Systematic assessment of ISWI subunits reveals that NURF creates local accessibility for proper CTCF function

Project description:Catalytic activity of the ISWI family of remodelers is critical for nucleosomal organization and transcription factor binding, including the insulator protein CTCF. To define which subcomplex mediates these diverse functions we phenotyped a panel of isogenic mouse stem cell lines each lacking one of six ISWI accessory subunits. Individual deletions of either CERF, RSF1, ACF, WICH or NoRC subcomplexes only moderately affect the chromatin landscape, while removal of the NURF-specific subunit BPTF leads to drastic reduction in chromatin accessibility and Snf2h ATPase localization around CTCF sites. While this reduces distances to the adjacent nucleosomes it only modestly impacts CTCF binding itself. In absence of accessibility, the insulator function of CTCF is nevertheless impaired resulting in lower occupancy of cohesin and cohesin-loading factors, and reduced insulation at these sites, highlighting the need of NURF-mediated remodeling for open chromatin and proper CTCF function. Our comprehensive analysis reveals a specific role for NURF in mediating Snf2h localization and chromatin opening at bound CTCF sites showing that local accessibility is critical for cohesin binding and insulator function.

2024-03-13 | PXD042945 | Pride

Cell type specificity of chromatin organization mediated by CTCF and cohesin

Project description:CTCF sites are abundant in the genomes of diverse species but their function is enigmatic. We used chromosome conformation capture to determine long-range interactions among CTCF/cohesin sites over 2 Mb on human chromosome 11 encompassing the β-globin locus and flanking olfactory receptor genes. Although CTCF occupies these sites in both erythroid K562 cells and fibroblast 293T cells, the long-range interaction frequencies among the sites are highly cell type specific, revealing a more densely clustered organization in the absence of globin gene activity. Both CTCF and cohesins are required for the cell-type-specific chromatin conformation. Furthermore, loss of the organizational loops in K562 cells through reduction of CTCF with shRNA results in acquisition of repressive histone marks in the globin locus and reduces globin gene expression, whereas silent flanking olfactory receptor genes are unaffected. These results support a genome-wide role for CTCF/cohesin sites through loop formation that both influences transcription and contributes to cell-type-specific chromatin organization and function. Comparison of CTCF binding in K562 and 293T cells using ChIP-chip. 3 replicates each cell type, ChIP and input DNA for each replicate.

2011-01-13 | E-GEOD-26507 | biostudies-arrayexpress

A non-canonical SWI/SNF complex underlies synthetic lethality in cancers driven by BAF complex perturbation

Project description:Mammalian SWI/SNF chromatin remodeling complexes exist in three distinct, final-form assemblies: canonical BAF (cBAF), PBAF, and a newly characterized non-canonical complex, ncBAF. However, their complex-specific targeting on chromatin, functions and roles in disease remain largely unknown. Here, we comprehensively map complex assemblies on chromatin and find that ncBAF uniquely localizes to CTCF sites and promoters. We identified ncBAF subunits as major synthetic lethalities specific to human synovial sarcoma and malignant rhabdoid tumor, which share in common cBAF complex perturbation. Chemical and biological depletion of the BRD9 subunit of ncBAF rapidly attenuates SS and MRT cell proliferation. Notably, in cBAF-perturbed cancers, ncBAF complexes retain localization to CTCF sites and promoters, and maintain gene expression at retained mSWI/SNF sites to support cell proliferation in a manner distinct from fusion oncoprotein-mediated targeting. Taken together, these findings unmask the unique targeting and function of ncBAF complexes and present new cancer-specific therapeutic targets.

2018-11-06 | PXD011103 | Pride

Multi-layered chromatin proteomics identifies cell vulnerabilities in DNA repair

Project description:DNA damage response (DDR) is instrumental for maintaining genome stability and its deregulation predisposes to carcinogenesis, while revealing attractive targets for innovative therapies. Chromatin governs the DNA repair process via the interplay among different layers consisting of DNA, histones post-translational modifications (hPTMs), and chromatin-associated proteins. Here we employ multi-layered proteomics to follow, during double-strand break repair, chromatin-mediated interactions of repair proteins, signatures of hPTMs, and the DNA-bound proteome. In particular, we functionally attribute novel chromatin-associated proteins to non-homologous end-joining or homologous recombination (HR) repair, we reveal susceptibility to PARP inhibitor treatment upon knockdown of ATAD2, TPX2 and EHMT2, and we profile hPTMs at γH2AX-mononucleosomes. Moreover, through the integration of these multiple chromatin layers we identify a potential role for EHMT2-mediated monomethylation of H3K56 in HR. Collectively, our results provide an innovative chromatin-centered view of the DDR process, while representing a valuable resource for the use of PARP inhibitors in cancer.

2023-02-20 | PXD027421 | Pride

TCC in pluripotent and differentiated cells

Project description:Regulation of gene expression underlies the establishment and maintenance of cell identity. Chromatin structure and gene activity are linked. Recently CTCF anchored loops have been described as major features of chromatin organisation. However, the dynamics and role for these structures in differentiation is unknown. We used Tethered Chromatin Conformation Capture (TCC) to assess for the dynamics of CTCF-anchor loop formation upon differentiation of mouse embryonic stem cells (ESC) and neural stem cells (NSC).

2018-11-08 | E-MTAB-4870 | biostudies-arrayexpress

The genomic landscape of cohesin-associated chromatin interactions

Project description:Cohesin is implicated in establishing tissue-specific DNA loops that target enhancers to promoters, and also localizes to sites bound by the insulator protein CTCF, which blocks enhancer-promoter communication. However, cohesin-associated interactions have not been characterized on a genome-wide scale. Here we performed chromatin interaction analysis with paired-end tag sequencing (ChIA-PET) of the cohesin subunit SMC1A in developing mouse limb. We identified 2,264 SMC1A interactions, of which 1,491 (65%) involved sites co-occupied by CTCF. SMC1A participates in tissue- specific enhancer-promoter interactions and interactions that demarcate regions of correlated regulatory output. In contrast to previous studies, we also identified interactions between promoters and distal sites that are maintained in multiple tissues, but are poised in embryonic stem cells and resolve to tissue-specific activated or repressed chromatin states in the mouse embryo. Our results reveal the diversity of cohesin- associated interactions in the genome and highlight their role in establishing the regulatory architecture of development. Smc1a ChIA-PET, RNA-seq, chromatin state maps (H3K27ac, H3K27me3, H3K4m2), and CTCF and Smc1a binding in mouse embryonic limb bud (E11.5)

2013-05-22 | E-GEOD-42237 | biostudies-arrayexpress