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A Myc-dependent role for cohesin in the heterokaryon-mediated reprogramming of somatic nuclei

ABSTRACT: Analysis of gene expression changes in mESCs where the cohesin subunit Scc1 has been depleted. There are 6 samples. 3 Scc1 wt/wt ERT2-Cre biological replicas and 3 Scc1 lox/lox ERT2-Cre biological replicas, all treated with 4'-OHT 80nM final concentration for 24h. Scc1 wt/wt and Scc1 lox/lox ERT2-Cre mES cells where grown in N2B27 +2i+LIF medium (Ying et al. 2008) for 24h in the presence of 80mM 4-OHT to induce cohesin depletion. Three biological replicates were collected and RNA was extracted. Microarray samples were prepared following the manufacturers instructions (Affymetrix) using 200ng of total RNA. Microarry samples were hybridized to Affymetrix GeneChip Mouse Gene 1.0 ST Arrays and the analysis was performed using the Bioconductor Package for R.

ORGANISM(S): Mus musculus

SUBMITTER: Gopuraja Dharmalingam

PROVIDER: E-GEOD-62325 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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Initiation and maintenance of pluripotency gene expression in the absence of cohesin.

Lavagnolli Thais T Gupta Preksha P Hörmanseder Eva E Mira-Bontenbal Hegias H Dharmalingam Gopuraja G Carroll Thomas T Gurdon John B JB Fisher Amanda G AG Merkenschlager Matthias M

Genes & development 20150101 1

Cohesin is implicated in establishing and maintaining pluripotency. Whether this is because of essential cohesin functions in the cell cycle or in gene regulation is unknown. Here we tested cohesin's contribution to reprogramming in systems that reactivate the expression of pluripotency genes in the absence of proliferation (embryonic stem [ES] cell heterokaryons) or DNA replication (nuclear transfer). Contrary to expectations, cohesin depletion enhanced the ability of ES cells to initiate somat ...[more]

PMID: 25561493

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A Myc-dependent role for cohesin in the heterokaryon-mediated reprogramming of somatic nuclei

Project description:Analysis of gene expression changes in mESCs where the cohesin subunit Scc1 has been depleted. There are 6 samples. 3 Scc1 wt/wt ERT2-Cre biological replicas and 3 Scc1 lox/lox ERT2-Cre biological replicas, all treated with 4'-OHT 80nM final concentration for 24h.

2015-02-19 | GSE62325 | GEO

RING1B calibrated ChIP-seq (cChIPseq) datasets for control mESCs and an Scc1-AID auxin-inducible degron.

Project description:We examined 3D chromatin structure in the absence of cohesin (Scc1-AID auxin-inducible degron) and a control line (E14-Tir1) and found that PRC1 core promoter component RING1B was one of the most enriched proteins. Hence, we performed calibrated ChIP-seq experiments on the control (E14-Tir1) and the Scc1-AID mESC lines with a spike in of HEK293 human cells to further study this relationship.

2020-01-23 | E-MTAB-7817 | biostudies-arrayexpress

BMP7 Signaling in TGFb Receptor-2 deficient Stromal Cells Provokes Epithelial Carcinogenesis

Project description:Mouse forestomach fibroblasts were isolated from a wild-type (wt), a FSP-Cre;TGFBR2 lox/lox (TGFBR2cKO) mouse, and a FSP-Cre;TGFBR2 lox/lox; Smad4 lox/lox (TGFBR2/SMAD4 cKO) mouse and expanded in vitro. The cells were then harvested and processed for RNA purification. While wt and TGFBR2/SMAD4 cKO mice are healthy, the TGFBR2cKO mouse presents with forestomach cancer.

2020-11-01 | GSE106442 | GEO

Cre-ERT mediated antiviral induction

Project description:In this work, we aimed at studying the impact of microRNAs on antiviral responses, using inducible deletion of one or two copies of Dicer1 (in Dicer-floxed x EsrCRE+ MEFs). Unexpectedly, we discovered that Cre-ERT activation by hydroxytamoxifen (OHT) alone, independent of Dicer1 deletion, had a strong impact on antiviral responses. These microarrays were performed on SV40 immortalized Dicer1 fl/fl EsrCRE+ MEFs, Dicer1 fl/wt EsrCRE+ MEFs, 96 h after initial OHT treatment, and SV40 immortalized Dicer1 wt/wt EsrCRE+ MEFs, Dicer1 wt/wt EsrCRE-neg MEFs (Wild Type MEFs), 48 h after initial OHT treatment. These analyses revealed the strong induction of several antiviral genes (Rsad2, Cxcl10...), following Cre-ERT activation. SV40 immortalized mouse embryonic fibroblasts from various genotypes were stimulated 24h with 500nM hydroxytamoxifen, and further expanded for 24 or 72h. Each sample was analyzed on Agilent-028005 SurePrint G3 Mouse GE 8x60K Microarray Each sample is in simplicate - no biological replicates; sample 1-4 were processed/analyzed on a different microarray slide to 5-8 (different day/operator)

2016-05-18 | E-GEOD-72024 | biostudies-arrayexpress

Cre-ERT mediated antiviral induction

2016-05-18 | GSE72024 | GEO

The Aurora B kinase and the polycomb protein Ring1B combine to regulate active promoters in quiescent lymphocytes [ChIP-seq]

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2013-09-27 | E-GEOD-42705 | biostudies-arrayexpress

Identification and functional characterization of proteins interacting with cohesin complex in yeast Saccharomyces cerevisiae.

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2023-10-24 | PXD037034 | Pride

Wapl-mediated release of Scc1-cohesin regulates chromosome structure and segregation in mouse oocytes

Project description:Cohesin is essential for genome folding and chromosome inheritance through cell divisions. In somatic cells, both of these functions are mediated by Scc1-cohesin, which in mitosis is released from chromosomes by Wapl and separase. In mammalian oocytes, cohesion is mediated by Rec8-cohesin. Scc1 is also expressed but neither required nor sufficient for cohesion, and its function in oocytes is unknown. Likewise, it is unknown whether Wapl regulates one or both cohesin complexes and chromosome segregation in mature oocytes. Using conditional mouse mutagenesis, we show that in meiosis I Wapl is required for proper chromosome segregation, predominantly releases Scc1-cohesin from chromosomes and promotes production of euploid eggs. Using single-nucleus Hi-C, we found that Scc1 is essential for chromatin loops and topologically associating domains (TADs) in oocytes. Increasing Scc1 residence time on chromosomes by Wapl depletion leads to vermicelli formation and intra-loop structures but, unlike in mitotic cells, does not increase loop size. This implies that loop size has reached a maximum in oocytes, possibly because it is limited by barriers such as cohesive cohesin. We conclude that distinct cohesin complexes generate loops and cohesion in mammalian oocytes and propose that the same principle applies to all cell types and species.

2020-03-04 | GSE132264 | GEO

RNA sequencing of inguinal white adipose tissue from seipin-deficient mice and appropriate controls

Project description:We generated Bscl2lox/lox mice X ERT2-Adipoq-CRE mice, allowing inducible seipin deletion in adipocytes upon tamoxifen addition (iATSKO). Indeed, a 5-day tamoxifen treatment led to a dramatic decrease in Bscl2 mRNA in the adipose tissue. To study the effects of seipin deficiency in vivo on adipose tissue homeostasis in an unbiased manner, we used 3’-signal recognition particle (SRP) RNA sequencing.

2022-01-11 | GSE188544 | GEO

TGFbRII-Eomes in CD4 T cells during chronic viral infection

Project description:Transcriptome analysis of CD4+ PD1+ T cells during LCMV CL13 infection Gene expression in WT and ERt2-cre;TGFbRII flox virus specific CD4 T cells

2016-06-30 | GSE83921 | GEO

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