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Effect of GFI1B ectopic expression in the hematopoietic or endothelial commitment of human iPSC derived CD34+CD43-CD73- hemogenic endothelium (HE)

ABSTRACT: Effect of GFI1B ectopic expression in the hematopoietic or endothelial commitment of human iPSC derived CD34+CD43-CD73- hemogenic endothelium (HE)

PROVIDER: PRJNA1032643 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR26539594_1.fastq.gz	Fastqsanger.gz
	SRR26539594_2.fastq.gz	Fastqsanger.gz
	SRR26539595_1.fastq.gz	Fastqsanger.gz
	SRR26539595_2.fastq.gz	Fastqsanger.gz
	SRR26539596_1.fastq.gz	Fastqsanger.gz

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Expression data of human ES cells-derived CD34+CD43+CD45low cells (hemogenic endothelium-like cells) expanded upon overexpression of Sox17

Project description:Overexpression of transcription factor Sox17 in human ES cells-derived endothelial cells and hematopoietic cells enhances expansion of hemogenic endothelium-like cells. Human ES cells were differentiated for 6 days, 8 days or 12 days in EBs, then CD34+CD43-CD45- endothelial cells, CD34+CD43+CD45- pre-hematopoietic progenitor cells (HPCs) or CD34+CD43+CD45+ HPCs were isolated by fluorescence activated cell sorting (FACS) and subjected to a microarray analysis.M-cM-^@M-^@Some samples were plated onto OP9 cells after the isolation by FACS, and transduced with the 4OH-tamoxifen-inducible 1M-CM-^WFLAG-tagged Sox17-ERT retrovirus. The cells were cultured with 4OH-tamoxifen. CD34+CD43+CD45low hemogenic endothelium-like cells expanded by Sox17-ERT were collected by magnetic-activated cell sorting (MACS) and subjected to a ChIP-chip analysis.

2012-12-14 | E-GEOD-37348 | biostudies-arrayexpress

ChIP-on-chip data from human ES cells-derived CD34+CD43+CD45low cells (hemogenic endothelium-like cells) overexpressing 3xFLAG-Sox17-ERT

Project description:Overexpression of transcription factor Sox17 in human ES cells-derived endothelial cells enhances expansion of hemogenic endothelium-like cells. Human ES cells were differentiated for 6 days in EBs, then CD34+CD43-CD45- endothelial cells were isolated, plated onto OP9 cells, and transduced with the 4OH-tamoxifen (4OHT)-inducible 3×FLAG-tagged Sox17-ERT retrovirus. The cells were seeded on OP9 stromal cells and cultured in the presence of 4OH-tamoxifen. At day 27 of the co-culture with OP9 cells, CD34+CD43+CD45low hemogenic endothelium-like cells overexpressing Sox17-ERT were collected by CD34 magnetic-activated cell sorting (MACS) and subjected to a ChIP-chip analysis.

2012-12-14 | E-GEOD-37528 | biostudies-arrayexpress

Effect of GFI1B ectopic expression in the hematopoietic or endothelial commitment of human iPSC derived CD34+CD43-CD73- hemogenic endothelium (HE)

Project description:In this study we focused on unrevealing the role of major transcriptional factor GFI1B and its cofactor, LSD1 in human endothelial to hematopoietic transition (EHT). We applied irreversible LSD1 inhibitor (GSK-LSD1) to healthy iPSC lines. Interestingly, LSD1 inhibited healthy lines which showed complete absence of hematopoietic cell output, did not showed detection of GFI1B expression, suggesting a timed transcriptional program. In order to test this hypothesis, we ectopically expressed GFI1B in the uncommitted HE cells, leading to downregulation of endothelial genes and an upregulation of hematopoietic genes, including GATA2, KIT, RUNX1 and SPI1.

2024-12-18 | GSE246386 | GEO

Expression data of human ES cells-derived CD34+CD43+CD45low cells (hemogenic endothelium-like cells) expanded upon overexpression of Sox17

Project description:Overexpression of transcription factor Sox17 in human ES cells-derived endothelial cells and hematopoietic cells enhances expansion of hemogenic endothelium-like cells.

2012-12-14 | GSE37348 | GEO

ChIP-on-chip data from human ES cells-derived CD34+CD43+CD45low cells (hemogenic endothelium-like cells) overexpressing 3xFLAG-Sox17-ERT

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Hemogenic Endothelium transcriptome along the timeline of hESC differentiation

Project description:The differentiation of human embryonic stem cells to hematopoietic lineages initiates with the specification of hemogenic endothelium, a transient specialized endothelial precursor of all blood cells.Unfortunately, absence of hemogenic endothelium-specific markers as well as lack of consensus in the timing of hemogenic potential analysis and methodologies used to study the hematopoietic potential of this precursor prevents reaching clear and definite conclusions. Here, we demonstrate that the hemogenic potential of the endothelium precursor population sharply decline over the course of the differentiation process. Poly(A) RNA-sequencing on CD31+CD144+ population at day 6, day 8 and day 10 of EB diffferentiation with or without the addition of cytokines. Comparasion with hematopoietic committed population CD31+CD144- from day 10 of EB differentiation.

2018-10-25 | GSE109648 | GEO

HoxA3 is an apical regulator of hemogenic endothelium

Project description:This SuperSeries is composed of the following subset Series: GSE25079: Epistasis analysis of Runx1 and Gata1 over HoxA3 in hemogenic endothelium GSE25080: Genes regulated by HoxA3 in endothelial and hematopoietic progenitors Refer to individual Series

2010-12-20 | E-GEOD-25096 | biostudies-arrayexpress

Scl specifies hemogenic endothelium and inhibits cardiogenesis via primed enhancers [expression]

Project description:Scl/Tal1 confers hemogenic competence and prevents cardiomyogenesis in embryonic endothelium. Here we show that Scl both directly activates a broad gene regulatory network required for hematopoietic stem/progenitor cell (HS/PC) development, and represses transcriptional regulators required for cardiogenesis. Cardiac repression occurs during a short developmental window through Scl binding to distant cardiac enhancers that harbor H3K4me1 at this stage. Scl binding to hematopoietic regulators extends throughout HS/PC and erythroid development and spreads from distant enhancers to promoters. Surprisingly, Scl complex partners Gata 1 and 2 are dispensable for hematopoietic versus cardiac specification and Scl binding to the majority of its target genes. Nevertheless, Gata factors co-operate with Scl to activate selected transcription factors to facilitate HS/PC emergence from hemogenic endothelium. These results uncover a dual function for Scl in dictating hematopoietic versus cardiac fate choice and suggest a mechanism by which lineage-specific bHLH factors direct the divergence of competing fates. Examination of Scl target genes in ES cell derived day4 EB (embryoid body) Flk+ mesodermal cells

2015-01-01 | E-GEOD-47084 | biostudies-arrayexpress

Scl specifies hemogenic endothelium and inhibits cardiogenesis via primed enhancers [RRBS]

Project description:Scl/Tal1 confers hemogenic competence and prevents cardiomyogenesis in embryonic endothelium. Here we show that Scl both directly activates a broad gene regulatory network required for hematopoietic stem/progenitor cell (HS/PC) development, and represses transcriptional regulators required for cardiogenesis. Cardiac repression occurs during a short developmental window through Scl binding to distant cardiac enhancers that harbor H3K4me1 at this stage. Scl binding to hematopoietic regulators extends throughout HS/PC and erythroid development and spreads from distant enhancers to promoters. Surprisingly, Scl complex partners Gata 1 and 2 are dispensable for hematopoietic versus cardiac specification and Scl binding to the majority of its target genes. Nevertheless, Gata factors co-operate with Scl to activate selected transcription factors to facilitate HS/PC emergence from hemogenic endothelium. These results uncover a dual function for Scl in dictating hematopoietic versus cardiac fate choice and suggest a mechanism by which lineage-specific bHLH factors direct the divergence of competing fates. Examination of Scl and Gata 1 & 2 target genes in ES cell derived day4.75 EB (embryoid body) Tie2+CD31+CD41- endothelial cells

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Scl Represses Cardiomyogenesis in Prospective Hemogenic Endothelium and Endocardium

Project description:Endothelium in embryonic hematopoietic tissues generates hematopoietic stem/progenitor cells; however, it is unknown how its unique potential is specified. We show that transcription factor Scl/Tal1 is essential for both establishing the hematopoietic transcriptional program in hemogenic endothelium and preventing its misspecification to a cardiomyogenic fate. Scl-/- embryos activated a cardiac transcriptional program in yolk sac endothelium, leading to the emergence of CD31+Pdgfrα+ cardiogenic precursors that generated spontaneously beating cardiomyocytes. Ectopic cardiogenesis was also observed in Scl-/- hearts, where the disorganized endocardium precociously differentiated into cardiomyocytes. Induction of mosaic deletion of Scl in Sclfl/flRosa26Cre-ERT2 embryos revealed a cell-intrinsic, temporal requirement for Scl to prevent cardiomyogenesis from endothelium. Scl-/- endothelium also upregulated the expression of Wnt antagonists, which promoted rapid cardiomyocyte differentiation of ectopic cardiogenic cells. These results reveal unexpected plasticity in embryonic endothelium such that loss of a single master regulator can induce ectopic cardiomyogenesis from endothelial cells.

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