Browse
Submit Data
Databases
API
Help

Dataset Information

0 Views

0 Connections

0 Citations

0 Reanalyses

0 Downloads

Omics score: 0

3D Landscape of Regulatory Elements and Transcription Factors for Transcriptional Regulation in Arabidopsis [ChIA-PET]

ABSTRACT: Analyses of the regulatory repertoire showed that distal active cis-regulatory elements (CREs) are linked to their target genes through long-range chromatin interactions with increased expression, and poised CREs are linked to their target genes through long-range chromatin interactions with depressed expression. Furthermore, we demonstrated that transcription factor MYC2 is critical for chromatin spatial organization, and proposed that MYC2 occupancy and MYC2-mediated chromatin interactions coordinately facilitate transcription within the framework of 3D chromatin architecture. An analysis of functionally related gene-defined chromatin connectivity networks revealed that genes implicated in flowering-time control are functionally compartmentalized into separate subdomains via their spatial activity in the leaf or shoot apical meristem, linking active mark- or H3K27me3-associated chromatin conformation to coordinated gene expression. The results showed that the guiding principle for modulating gene transcription in Arabidopsis includes not only the linear juxtaposition, but also the long-range chromatin interactions.

ORGANISM(S): Arabidopsis thaliana

PROVIDER: GSE233527 | GEO | 2023/07/10

REPOSITORIES: GEO

ACCESS DATA

Json Xml

Dataset's files

Source:

			Action	DRS
		Other

Items per page:

1 - 1 of 1

Similar Datasets

3D Landscape of Regulatory Elements and Transcription Factors for Transcriptional Regulation in Arabidopsis [ChIP-seq]

Project description:Analyses of the regulatory repertoire showed that distal active cis-regulatory elements (CREs) are linked to their target genes through long-range chromatin interactions with increased expression, and poised CREs are linked to their target genes through long-range chromatin interactions with depressed expression. Furthermore, we demonstrated that transcription factor MYC2 is critical for chromatin spatial organization, and proposed that MYC2 occupancy and MYC2-mediated chromatin interactions coordinately facilitate transcription within the framework of 3D chromatin architecture. An analysis of functionally related gene-defined chromatin connectivity networks revealed that genes implicated in flowering-time control are functionally compartmentalized into separate subdomains via their spatial activity in the leaf or shoot apical meristem, linking active mark- or H3K27me3-associated chromatin conformation to coordinated gene expression. The results showed that the guiding principle for modulating gene transcription in Arabidopsis includes not only the linear juxtaposition, but also the long-range chromatin interactions.

2023-07-10 | GSE233526 | GEO

3D Landscape of Regulatory Elements and Transcription Factors for Transcriptional Regulation in Arabidopsis [ATAC-seq]

2023-07-10 | GSE233525 | GEO

3D Landscape of Regulatory Elements and Transcription Factors for Transcriptional Regulation in Arabidopsis [RNA-seq]

2023-07-10 | GSE233524 | GEO

3D Landscape of Regulatory Elements and Transcription Factors for Transcription in Arabidopsis

Project description:Whereas spatial genome organization at large scale of compartments and topologically associating domains (TADs) is relatively well studied, the spatial organization of regulatory elements at finer scales is poorly understood in plants. Here, using high-resolution chromatin interaction analysis by paired-end tag sequencing (ChIA-PET) approach, we mapped histone modification-marked DNA elements-associated and RNA polymerase II (RNAPII)-tethered chromatin interactions involving in transcriptionally active, inactive and Polycomb-repressed states in Arabidopsis. Analysis of the regulatory repertoire showed that both active proximal and distal cis-regulatory elements (CREs) promote the transcription of their nearest and long-range connecting genes; poised CREs act as transcriptional repressors to repress their interacting genes’ expression, indicating that the linear juxtaposition is not the only guiding principle modulating gene transcription. Chromatin connectivity networks revealed that genes implicating in flowering-time control are functionally compartmentalized into separate subnuclear domains, linking active mark- and H3K27me3-associated chromatin conformation to coordinated gene expression. Our study uncovers fine-scale Arabidopsis genome organization and their roles in orchestrating transcription and development.

2023-07-10 | GSE207010 | GEO

Manipulation of Long-Range Chromatin Interactions through CTCF Phase Separation for Cell Fate Control

Project description:Gene expression is controlled under spatial chromatin structures with short-range in topologically associating domains (TAD) and long-range chromatin interactions between TADs, compartments or chromosomes, and disruption of chromatin structure leads to human diseases. The mechanism of short-range chromatin interactions has been well characterized by loop-extrusion model, but little is known about how long-range chromatin interactions are organized. Here, we demonstrate that CTCF contributes to long-range chromatin interactions via phase separation. Surprisingly, RYBP is required for the phase separation and long-range chromatin organization of CTCF. Artificial CTCF phase seperation restores the long-range chromatin interactions and corresponding gene expression which were eliminated by RYBP depletion, and manipulation of CTCF phase separation also maintains pluripotency and inhibits differentation of embryonic stem cells. These findings support a model that long-range chromatin interactions are organized through phase sepearation of architectural protein, and further reveals the distinct mechanisms of architectural protein in organizing short-range and long-range chromatin interactions.

2022-08-10 | GSE147919 | GEO

RNA-seq transcriptonal profiling in human K562 cells with or without dCas9 and sgRNAs

Project description:Cis-regulatory elements (CREs) are commonly recognized by correlative chromatin features, yet the molecular composition of the vast majority of CREs in chromatin remains unknown. Here we describe a CRISPR affinity purification in situ of regulatory elements (CAPTURE) approach to unbiasedly identify locus-specific chromatin-regulating protein complexes and long-range DNA interactions. Using an in vivo biotinylated endonuclease-deficient Cas9 protein and sequence-specific guide RNAs, we show high-resolution and selective isolation of chromatin interactions at a single copy genomic locus. Purification of human telomeres using CAPTURE identifies known and new telomeric factors. In situ capture of individual constituents of the enhancer cluster controlling human β-globin genes establishes evidence for composition-based hierarchical organization of enhancer structure. Furthermore, unbiased analysis of chromatin interactions at disease-associated cis-elements and developmentally controlled super-enhancers reveals spatial features causally regulate gene transcription. Thus, comprehensive analysis of locus-specific regulatory composition provides mechanistic insight into genome structure and function in development and disease.

2017-08-24 | GSE99179 | GEO

ChIP-seq analysis of H3K4me3, H3K27ac and CTCF in undifferentiated and differentiated G1E-ER4 cells

2020-02-20 | GSE139111 | GEO

CAPTURE-3C-seq analysis of cis-element-mediated long-range DNA interactions

2017-08-24 | GSE99174 | GEO

ATAC-seq analysis in K562 cells with or without HBD-1k region knockout, mouse KH2 embryonic stem cells (ESCs) and differentiated KH2 Embryoid bodies (EBs)

2017-08-24 | GSE99173 | GEO

ChIP-seq analysis of BRD4 and RNAPII in K562 cells treated with DMSO or JQ1, NUP98 and NUP153 in K562 cells, and H3K27ac in mouse KH2 undifferentiated embryonic stem cells (ESCs) or differentiated embryonic bodies (EBs)

2017-08-24 | GSE99178 | GEO