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Transcriptional remodeling by OTX2 directs specification and patterning of mammalian definitive endoderm [ATAC-seq]

ABSTRACT: Transcriptional remodeling by OTX2 directs specification and patterning of mammalian definitive endoderm [ATAC-seq]

PROVIDER: PRJNA1070555 | ENA |

REPOSITORIES: ENA

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Transcriptional remodeling by OTX2 directs specification and patterning of mammalian definitive endoderm [ATAC-seq]

Project description:We discovered a role for the transcription factor OTX2 in formation of mouse definitive endoderm (DE). We used ATAC-seq to identify open chromatin regions in OTX2-depleted definitive endoderm cells and identify sites with changed accessibility during DE differentiation

2024-06-26 | GSE254431 | GEO

Transcriptional remodeling by OTX2 directs specification and patterning of mammalian definitive endoderm [CUT&RUN]

Project description:We discovered a role for the transcription factor OTX2 in formation of mouse definitive endoderm (DE). We used CUT&RUN to map OTX2-bound genomic regions and identify OTX2-regulated genes during directed differentiation of EpiSCs to DE

2024-06-26 | GSE254590 | GEO

Transcriptional remodeling by OTX2 directs specification and patterning of mammalian definitive endoderm [scRNA-seq]

Project description:We discovered a role for the transcription factor OTX2 in formation of mouse definitive endoderm (DE). We determined the gene expression profiles during conversion of EpiSCs to DE using scRNA-seq. We used dTAG13 to deplete OTX2 at two timepoints of differentiation

2024-06-26 | GSE254428 | GEO

Transcriptional remodeling by OTX2 directs specification and patterning of mammalian definitive endoderm [scRNA-seq]

Project description:Transcriptional remodeling by OTX2 directs specification and patterning of mammalian definitive endoderm [scRNA-seq]

| PRJNA1070557 | ENA

Transcriptional remodeling by OTX2 directs specification and patterning of mammalian definitive endoderm [CUT&RUN]

Project description:Transcriptional remodeling by OTX2 directs specification and patterning of mammalian definitive endoderm [CUT&RUN]

| PRJNA1071101 | ENA

Emergence and patterning dynamics of mouse definitive endoderm

Project description:Emergence and patterning dynamics of mouse definitive endoderm

| PRJNA782003 | ENA

Emergence and patterning dynamics of mouse definitive endoderm

Project description:The segregation of definitive endoderm (DE) from bi-potent mesendoderm progenitors leads to the formation of two distinct germ layers. Dissecting DE commitment and onset has been challenging as it occurs within a narrow spatio-temporal window in the embryo. Here we employ a novel dual Bra/Sox17 reporter cell line to study DE onset dynamics. We find Sox17 expression initiates in a few isolated cells in vivo within a temporally restricted window. Using 2D and 3D in vitro models, we show that DE cells emerge from mesendoderm progenitors at a temporally regular, but spatially stochastic pattern, which is subsequently arranged by self-sorting of Sox17+ cells. A subpopulation of Bra-high cells commits to a Sox17+ fate independent of external Wnt signal. Self-sorting coincides with up-regulation of E-cadherin but is not necessary for DE differentiation or proliferation. Our in vivo and in vitro results highlight basic rules governing DE onset and patterning through the commonalities and differences between these systems.

2021-12-13 | GSE189224 | GEO

Otx2 controls regional patterning within the MGE and regional identity of the septum [ChIP-Seq]

Project description:The Otx2 homeobox transcription factor is essential for gastrulation and early neural development. We generated Otx2 conditional knockout (cKO) mice to investigate its roles in telencephalon development after E9.0. We conducted transcriptional profiling and in situ hybridization to identify genes de-regulated in Otx2 cKO ventral forebrain. In parallel, we used ChIP-seq to identify enhancer elements, OTX2 binding motif, and which de-regulated genes are likely direct targets of Otx2 transcriptional regulation. We found that Otx2 was essential in septum specification; regulation of Fgf signaling in the rostral telencephalon; and medial ganglionic eminence (MGE) patterning, neurogenesis, and oligodendrogenesis. Within the MGE, Otx2 was required for ventral but not dorsal identity; this is the first demonstration of a transcription factor that contributes to regional patterning within the MGE. Microdissected subpallium (septum, MGE, and LGE ) from wildtype E12.5 CD-1 embryos was used in three independentanti-OTX2 ChIP-seq experiments.

2015-06-10 | E-GEOD-69724 | biostudies-arrayexpress

Saracatinib Promotes Definitive Endoderm Differentiation by Inhibition of FAK-YAP Signaling Axis

Project description:Optimizing the efficiency of definitive endoderm differentiation is significant for the generation of diverse organ-like structures. In this study, we utilized saracatinib to enhance definitive endoderm differentiation in pluripotent stem cells. We found saracatinib significantly improved the definitive endoderm differentiation at low concentrations. To investigate the impact of 0.5 μM saracatinib on definitive endoderm differentiation of ESC H1 cells, we conducted RNA-seq analysis with differentiated cells with or without 0.5 μM saracatinib treatment.

2023-12-24 | GSE251992 | GEO

Dynamic developmental signaling logic underlying lineage bifurcations during human endoderm induction and patterning from pluripotent stem cells [Expression data set]

Project description:The definitive endoderm germ layer is the provenance of multiple internal organs, including the lungs, liver, pancreas and intestines. Molecular events driving initial endoderm germ layer specification and subsequent anterior-posterior patterning of endoderm into distinct organ primordia remain largely cryptic. Through microarray analyses, we captured genome-wide transcriptional dynamics driving successive stages of endoderm development with the intent of identifying novel regulatory genes or diagnostic markers that respectively drive or mark endoderm committment. HES3 human embryonic stem cells (hESCs) were differentiated into highly homogeneous endodermal progenitor populations, and microarray analyses were conducted of six different populations at different tiers of the endodermal lineage hierarchy: undifferentiated hESCs, anterior primitive streak (day 1 of in vitro differentiation), definitive endoderm (day 3) and anterior foregut, posterior foregut or midgut/hindgut patterned endoderm populations (day 7). Additionally, we compared hESCs differentiated using two alternative endoderm induction protocols, serum-based or AFBLy-based differentiation (both day 3 of differentiation).

2013-11-07 | E-GEOD-52158 | biostudies-arrayexpress

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