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A WIZ/Cohesin/CTCF complex anchors DNA loops to define gene expression and cell identity

ABSTRACT: This SuperSeries is composed of the SubSeries listed below.

ORGANISM(S): Mus musculus

PROVIDER: GSE137285 | GEO | 2020/04/14

REPOSITORIES: GEO

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Similar Datasets

A WIZ/Cohesin/CTCF Complex Anchors DNA Loops to Define Gene Expression and Cell Identity.

Project description:Chromosome structure is a key regulator of gene expression. CTCF and cohesin play critical roles in structuring chromosomes by mediating physical interactions between distant genomic sites. The resulting DNA loops often contain genes and their cis-regulatory elements. Despite the importance of DNA loops in maintaining proper transcriptional regulation and cell identity, there is limited understanding of the molecular mechanisms that regulate their dynamics and function. We report a previously unrecognized role for WIZ (widely interspaced zinc finger-containing protein) in DNA loop architecture and regulation of gene expression. WIZ forms a complex with cohesin and CTCF that occupies enhancers, promoters, insulators, and anchors of DNA loops. Aberrant WIZ function alters cohesin occupancy and increases the number of DNA loop structures in the genome. WIZ is required for proper gene expression and transcriptional insulation. Our results uncover an unexpected role for WIZ in DNA loop architecture, transcriptional control, and maintenance of cell identity.

| S-EPMC7212317 | biostudies-literature

A WIZ/Cohesin/CTCF complex anchors DNA loops to define gene expression and cell identity [Hi-C]

Project description:Purpose: Chromatin architecture is an important regulator of gene expression, but details of how DNA loops form and function remain unclear. The purpose of this study is to assess the role of Widely Interspaced Zinc-fingers protein (WIZ) in gene regulation and DNA looping. Method: Genome wide chromatin looping patterns in the presence or absence of WIZ were assessed via Hi-C in both wildtype and CRISPR-Cas9 genome edited WIZ deletion mouse embryonic stem cells (mESCs).

2020-04-14 | GSE137274 | GEO

A WIZ/Cohesin/CTCF complex anchors DNA loops to define gene expression and cell identity [ChIP-Seq]

Project description:Purpose: Chromatin architecture is an important regulator of gene expression, but details of how DNA loops form and function remain unclear. The purpose of this study is to assess the role of Widely Interspaced Zinc-fingers protein (WIZ) in gene regulation and DNA looping. Method: Genome wide binding patterns of known architectural proteins in the presence or absence of WIZ were assessed via chromatin immunoprecipitation followed by high throughput sequencing (ChIP-seq) in both wildtype and CRISPR-Cas9 genome edited WIZ deletion mouse embryonic stem cells (mESCs).

2020-04-14 | GSE137272 | GEO

A WIZ/Cohesin/CTCF complex anchors DNA loops to define gene expression and cell identity [RNA-Seq]

Project description:Purpose: Chromatin architecture is an important regulator of gene expression, but details of how DNA loops form and function remain unclear. The purpose of this study is to assess the role of Widely Interspaced Zinc-fingers protein (WIZ) in gene regulation and DNA looping. Method: The role of WIZ in gene regulation was assessed by performing RNA-seq in both wildtype and CRISPR-Cas9 genome edited WIZ deletion mouse embryonic stem cells (mESCs).

2020-04-14 | GSE137271 | GEO

A WIZ/Cohesin/CTCF complex anchors DNA loops to define gene expression and cell identity

Project description:A WIZ/Cohesin/CTCF complex anchors DNA loops to define gene expression and cell identity

| PRJNA565013 | ENA

A WIZ/Cohesin/CTCF complex anchors DNA loops to define gene expression and cell identity [ChIP-Seq]

Project description:A WIZ/Cohesin/CTCF complex anchors DNA loops to define gene expression and cell identity [ChIP-Seq]

| PRJNA565019 | ENA

A WIZ/Cohesin/CTCF complex anchors DNA loops to define gene expression and cell identity [RNA-Seq]

Project description:A WIZ/Cohesin/CTCF complex anchors DNA loops to define gene expression and cell identity [RNA-Seq]

| PRJNA565018 | ENA

A WIZ/Cohesin/CTCF complex anchors DNA loops to define gene expression and cell identity [Hi-C]

Project description:A WIZ/Cohesin/CTCF complex anchors DNA loops to define gene expression and cell identity [Hi-C]

| PRJNA565020 | ENA

Eco1-dependent cohesin acetylation anchors chromatin loops and cohesion to define functional meiotic chromosome domains.

Project description:Cohesin organizes the genome by forming intra-chromosomal loops and inter-sister chromatid linkages. During gamete formation by meiosis, chromosomes are reshaped to support crossover recombination and two consecutive rounds of chromosome segregation. Here we show that meiotic chromosomes are organised into functional domains by Eco1 acetyltransferase-dependent positioning of both chromatin loops and sister chromatid cohesion in budding yeast. Eco1 acetylates the Smc3 cohesin subunit in meiotic S phase to establish chromatin boundaries, independently of DNA replication. Boundary formation by Eco1 is critical for prophase exit and for the maintenance of cohesion until meiosis II, but is independent of the ability of Eco1 to antagonize the cohesin-release factor, Wpl1. Conversely, prevention of cohesin release by Wpl1 is essential for centromeric cohesion, kinetochore monoorientation and co-segregation of sister chromatids in meiosis I. Our findings establish Eco1 as a key determinant of chromatin boundaries and cohesion positioning, revealing how local chromosome structuring directs genome transmission into gametes.

| S-EPMC8856730 | biostudies-literature

Eco1-dependent cohesin acetylation anchors chromatin loops and cohesion to define functional meiotic chromosome domains

Project description:This SuperSeries is composed of the SubSeries listed below.

2022-02-04 | GSE185021 | GEO