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RAD21-TEV NLS-TEV RNAseq - extended cohesin depletion

ABSTRACT: RAD21-TEV NLS-TEV RNAseq - extended cohesin depletion

PROVIDER: PRJNA679484 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR13084841_1.fastq.gz	Fastqsanger.gz
	SRR13084841_2.fastq.gz	Fastqsanger.gz
	SRR13084842_1.fastq.gz	Fastqsanger.gz
	SRR13084842_2.fastq.gz	Fastqsanger.gz
	SRR13084843_1.fastq.gz	Fastqsanger.gz

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RAD21-TEV NLS-TEV RNAseq - extended cohesin depletion

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Transcription profiling of zebrafish embryos homozygous mutant for the cohesin subunit Rad21

Project description:Rad21 is a subunit of cohesin. The main function of cohesin is to hold replicated chromosomes together until cells divide, but it also plays a role in gene expression. To find out which genes might be regulated by cohesin, a study was conducted to look for global changes in gene expression in zebrafish embryos lacking cohesin component Rad21. The zebrafish Rad21 mutant used for expression analysis was rad21nz171, an allele isolated in a forward genetic screen for regulators of runx1. Experiment Overall Design: RNA from rad21nz171 mutant and wild type zebrafish embryos collected at 24 hours post-fertilization (h.p.f.) and 48 h.p.f. was hybridized to Affymetrix microarrays (Gene Chip zebrafish genome arrays cat. no. 900488). Four pools of 50 embryos for each genotype and time point were used as the RNA source, and RNA from each pool was hybridized independently such that the experiment had four biological replicates.

2009-11-10 | E-GEOD-18795 | biostudies-arrayexpress

Expression data from zebrafish embryos homozygous mutant for the cohesin subunit Rad21

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Rad21 is the core subunit of cohesin complex in directing genome organization

Project description:In eukaryotes, the nuclear chromatin in the interphase is a hierarchical organization. Previous studies have suggested that cohesin-DNA interactions play important architectural functions for chromatin structure in the interphase. In this study, we applied super-resolution imaging, single-molecule imaging to measure the distribution of cohesin subunits. Hi-C and RNA-seq were used to reveal the 3D genome structures alterations and the relationship with breast cancer upon Rad21 up-regulation. Hi-C experiment showed that the contact frequency of short distance was increased while that of long distance was decreased in the absence of Rad21 up-regulation. Chromatin interactions between A and B compartments increased and compartmentalization strength was reduced significantly upon Rad21 up-regulation. Correspondingly, accumulated contacts were shown at TAD corners and inter-TAD interactions increased. These observations support cohesin loop extrusion model and lead us to propose the unique role of Rad21-loader interaction in cohesin loading and further cohesin extrusion. Moreover, we combined transcriptome changes and chromatin structure alterations upon Rad21 up-regulation and revealed the correlation between Rad21 and breast cancer by affecting chromatin architecture.

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Rad21-mediated NF-κB signaling limits hematopoietic stem cell self-renewal in aging and inflammation

Project description:MTD project_description Inflammation and decreased stem cell function characterize organism aging, yet the relationship between these factors remains incompletely understood. This study shows that aged hematopoietic stem and progenitor cells exhibit increased ground-stage NF-κB activity, which enhances their responsiveness to undergo differentiation and loss of self-renewal in response to inflammation. The study identifies Rad21/cohesin as a critical mediator of NF-κB signals, by increasing chromatin accessibility of inter-/intra-genic and enhancer regions. Rad21/NF-κB are required for normal differentiation, but limit self-renewal of hematopoietic stem cells (HSCs) during aging and inflammation in an NF-κB dependent manner. HSCs from aged mice fail to downregulate Rad21/cohesin and inflammation/differentiation inducing signals in the resolution phase after acute inflammation. and The inhibition of cohesin/NF-κB is sufficient to revert the hypersensitivity of aged HSPCs to inflammation-induced differentiation. During aging, myeloid-biased HSCs with disrupted and naturally occurring reduced expression of Rad21/cohesin are increasingly selected over lymphoid-biased HSCs. Together, Rad21/cohesin mediated NF-κB signaling limits HSPC function during aging and selects for cohesin deficient HSCs with myeloid skewed differentiation.

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Expression data from MCF7 cells depleted of the cohesin subunit RAD21 and treated with estrogen or vehicle

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