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Comparison of Flk-1+/Etv2- vs Flk-1+/Etv2+ populations

ABSTRACT: Screening for genes up in Etv2+ cells within Flk-1+ ES derived mesoderm Microarray analysis performed to screen for the candidate genes regulated by Etv2. Differentiated Flk-1+ mesoderm can be devided into Etv2+ or-. Etv2+ cells are assumed to be committed to hemato/endothelial cells. Comparison of two populations can reveal genes relevant in this commitment.

ORGANISM(S): Mus musculus

PROVIDER: GSE31743 | GEO | 2011/08/31

SECONDARY ACCESSION(S): PRJNA145447

REPOSITORIES: GEO

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Comparison of Flk-1+/Etv2- vs Flk-1+/Etv2+ populations

Project description:Screening for genes up in Etv2+ cells within Flk-1+ ES derived mesoderm Microarray analysis performed to screen for the candidate genes regulated by Etv2. Differentiated Flk-1+ mesoderm can be devided into Etv2+ or-. Etv2+ cells are assumed to be committed to hemato/endothelial cells. Comparison of two populations can reveal genes relevant in this commitment. Extract RNA from sorted Flk-1+/Etv2- vs Flk-1+/Etv2+ populations.Etv2-Venus KI ES cells were differentiated on OP9 for 4-5 days and Flk-1+ population was separated into Etv2-Venus+ or- cells. Total RNA was purified from each population for analysis.

2011-08-30 | E-GEOD-31743 | biostudies-arrayexpress

Comparison of Flk-1+/PDGFRa+(Flk-1PRa+(DP)) population from Etv2Het vs Etv2KO ES cells

Project description:Screening for genes regulated by Etv2 within Flk-1+/PDGFRa+ ES derived mesoderm.Microarray analysis performed to screen for the candidate genes regulated by Etv2. TT2 ES cells differentiated on OP9 feeder cells were sorted using Flk-1 and PDGFRa antibodies.Gene expressions from these two populations were compared. Extract RNA from sorted Flk-1+/PDGFRa+ populations from Etv2Het vs KO cells. To obtain primitive mesoderm cells TT2 ES cells of corresponding genotypes were differentiated on OP9 cells for 4 days. Flk-1+/PDGFRa+ populations were sorted from Etv2 Het vs. KO cells for RNA extraction.

2011-08-30 | E-GEOD-31744 | biostudies-arrayexpress

Comparison of Flk-1+/PDGFRa+(Flk-1PRa+(DP)) population from Etv2Het vs Etv2KO ES cells

2011-08-31 | GSE31744 | GEO

ETV2 primes hematoendothelial gene enhancers prior to hematoendothelial fate commitment

Project description:The lineage-determining transcription factor ETV2 is necessary and sufficient for hematoendothelial fate commitment. We investigated how ETV2-driven gene regulatory networks promote hematoendothelial fate commitment. We resolved the sequential determination steps of hematoendothelial versus cardiac differentiation from mouse embryonic stem cells. Etv2 was strongly induced and bound to the enhancers of hematoendothelial genes in a common cardiomyocyte-hematoendothelial mesoderm progenitor. However, only Etv2 itself and Tal1, not other ETV2-bound genes, were induced. Despite ETV2 genomic binding and Etv2 and Tal1 expression, cardiomyogenic fate potential was maintained. A second wave of ETV2-bound target genes was up-regulated during the transition from the common cardiomyocyte-hematoendothelial progenitor to the committed hematoendothelial population. A third wave of ETV-bound genes were subsequently expressed in the committed hematoendothelial population for sub-lineage differentiation. The shift from ETV2 binding to productive transcription, not ETV2 binding to target gene enhancers, drove hematoendothelial fate commitment. This work identifies mechanistic phases of ETV2-dependent gene expression that distinguish hematoendothelial specification, commitment, and differentiation.

2023-06-16 | GSE136692 | GEO

Expression data from day 3 Flk-1 mesoderm between ER71 overexpressed and ER71 knockout mouse embryonic stem cell

Project description:Ets transcription factor ER71 is critical for Flk-1 mesoderm specification to different cell lineages. In this dataset, we determine to investigate the mechanisms by which ER71 regulates hematopoietic and endothelial cell versus cardiac cell lineage development. Expression of all four Flk-1+ mesoderm populations (i.e. Er71 overexpressed versus control, Er71 deficient versus control Flk-1+ mesoderm) was compared. Specifically, we sorted Flk-1+ mesoderm from day 3 differentiated embryonic stem(ES) cells, including induced Er71 and control ES cells, as well as Er71+/+ as well as Er71-/- ES cells .

2012-02-20 | E-GEOD-35793 | biostudies-arrayexpress

ETV2 cooperates with SCL for timely gene activation during hemogenic endothelium specification [RNA-Seq]

Project description:By RNA sequencing, we report here some hemato-vascular genes could be induced and some mesodermal/ cardiac genes could be repressed by SCL with delay in ES cell derived day 4.75 endothelial cells in the absence of ETV2

2017-12-12 | GSE92535 | GEO

Expression data from day 3 Flk-1 mesoderm between ER71 overexpressed and ER71 knockout mouse embryonic stem cell

2012-02-20 | GSE35793 | GEO

Mus musculus

Project description:Comparison of Flk-1+/Etv2- vs Flk-1+/Etv2+ populations

| PRJNA145447 | ENA

Etv2-mediated hemangiogenic fate commitment of mesoderm

Project description:A comprehensive understanding of a lineage map and molecular mechanisms underlying lineage specification is fundamental to development. To this end, ETS transcription factor Etv2 functions as the master regulator of hematopoietic and endothelial cell formation. As such, Etv2 regulated hemangiogenesis provides an excellent model for assessing cell lineage specification. Herein, we generated several reporter embryonic stem (ES) cell lines to map developmental route pertaining to hemangiogenesis. We performed transcriptome analysis and high throughput CRISPR screening to further delineate molecular mechanisms regulating hemangiogenic lineage specification. We show a distinct lineage map of hemangiogenesis, in which hemangiogenic fate is specified not simply by the onset of Etv2 expression, but in a threshold-dependent manner. Importantly, VEGF-FLK1 signaling is necessary for efficiently achieving ETV2-threshold. Moreover, we find forkhead transcription factor Foxh1 to be required for FLK1 mesoderm formation. These studies provide a roadmap in hematopoietic and vascular cell generation and applications in regenerative medicine.

2017-08-01 | GSE85641 | GEO

Next Generation Sequencing to Study FLK-affected genes

Project description:Purpose: The goals of this study are to compare RNA-seq profiles of Col-0, acd6-1, flk-1, flk-5, acd6-1flk-1, and acd6-1flk-5 to identify genes affected by FLK. Methods: Total RNA was extracted from 25-d old plants. A total amount of 1 μg RNA per sample was used to generate cDNA libraries, using NEBNext® UltraTM RNA Library Prep Kit for Illumina® (NEB, USA) following manufacturer’s recommendations. Deep sequencing was performed using Illumina NovaSeq 6000 (Novogene Corporation Inc.). Triplicate biological samples were used for all genotypes except acd6-1flk-5, which had duplicate samples because one sample failed to pass quality control. The samples were multiplexed and sequenced with the standard paired-end sequencing that has a read length of 150bp per end and 20M reads per end per sample. Results: We found that over 8000 genes are differentially affected by FLK based on the RNAseq analysis. GO analysis revealed that FLK-affected genes are enchriched for genes involved in primary metabolism and in response to abiotic and biotic stimuli. Conclusions: The RNAseq analysis support a role of FLK in regulation of plant development and defense.

2023-04-12 | GSE164424 | GEO

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