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Transcriptional regulation by Norrin-Frizzled4 signaling in the embryonic yolk sac

ABSTRACT: Transcriptional profiles of the embryonic yolk sac from embryos with ectopic Norrin expression were compared to their wild type littermate controls. The goal is to identify the transcriptional response to Norrin-Frizzled 4 signaling during embryonic angiogenesis.

ORGANISM(S): Mus musculus

PROVIDER: GSE16691 | GEO | 2009/10/01

SECONDARY ACCESSION(S): PRJNA122703

REPOSITORIES: GEO

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Transcription profiling of mouse embryonic yolk sac from embryos with ectopic Norrin expression compared to wild type littermate controls

Project description:Transcriptional profiles of the embryonic yolk sac from embryos with ectopic Norrin expression were compared to their wild type littermate controls. The goal is to identify the transcriptional response to Norrin-Frizzled 4 signaling during embryonic angiogenesis. Experiment Overall Design: Ectopic Norrin expression was achieved using a conditional over-expression strategy. Yolk sacs from 3-5 embryos were pooled for each sample and 3 replicates of both control and experimental groups were analyzed.

2009-10-10 | E-GEOD-16691 | biostudies-arrayexpress

Transcription profiling of mouse cultured retinal endothelial cells - regulation by Norrin-Frizzled4 signaling (Super Series)

Project description:This SuperSeries is composed of the following subset Series:; GSE16691: Transcriptional regulation by Norrin-Frizzled4 signaling in the embryonic yolk sac; GSE16703: Long-term effect on the transcriptome of a decrement in Norrin/Frizzled4/Lrp signaling in retinal endothelial cells; GSE16705: Transcriptional response to Frizzled4 signaling in cultured retinal endothelial cells; GSE16707: Long-term effect on the transcriptome of loss of Frizzled4 signaling in cerebellar endothelial cells Experiment Overall Design: Refer to individual Series

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Expression data from Tnrc6a (GW182) mutant yolk sac

2011-09-01 | GSE30244 | GEO

Expression data from Tnrc6a (GW182) mutant yolk sac

Project description:GW182 (Tnrc6a) is a key component of RISC (miRNA-Induced Silencing Complex) that plays a critical role in miRNA-mediated gene silencing. Here, we show that GW182 is expressed in the yolk sac endoderm, and that gene-trap disruption of GW182 leads to growth arrest of yolk sac endoderm, impaired hematopoiesis and embryonic lethality. To investigate roles of GW182 in the yolk sac endoderm, we assessed changes in mRNA expression in the yolk sac of E9.5 GW182gt/gt embryos using microarrays (Affymetrix). Yolk sac of wild type littermates and GW182gt/gt embryos at E9.5 was collected for total RNA isolation using Trizol (Invitrogen). RNAs were purified according to the manufacturer’s protocol before subjected to Mouse Gene 1.0 ST Whole Genome Array (Affymetrix) for mRNA expression profiling. Experiments were performed in triplicate. Differentially expressed mRNAs were identified using a two-sample t-test (P<0.05 considered significant).

2011-08-31 | E-GEOD-30244 | biostudies-arrayexpress

The role of the yolk sac in human fetal development and identification of a hepatocyte-like cell in the human yolk sac

Project description:The human yolk sac (YS) is an extra-embryonic tissue critical for early prenatal life development. It is the first site of haematopoiesis where progenitors differentiate from endoderm within blood islands of the yolk sac contributing initially to primitive erythropoiesis and in subsequent waves to erythro-myeloid and lymphoid differentiation.

2023-03-01 | E-MTAB-10552 | biostudies-arrayexpress

The role of the yolk sac in human fetal development and identification of a hepatocyte-like cell in the human yolk sac (SS2)

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Human embryonic yolk sac CITE-seq data

Project description:Human embryonic yolk sac CITE-seq data

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Modeling Post-Implantation Human Development to Yolk Sac Blood Emergence

Project description:Implantation of the human embryo commences a critical developmental stage that comprises profound events including axis formation, gastrulation, and the emergence of yolk sac hematopoietic system. Our mechanistic knowledge of this window of human life remains limited due to restricted access to in vivo samples for both technical and ethical reasons. Stem cell models of human embryo have emerged to help unlock the mysteries of this stage. Here, we present a model of early post-implantation human embryogenesis (embryoid) with an extra-embryonic endoderm and mesoderm niche to support early hematopoiesis. This human embryo model is genetically inducible, and its unanticipated self-organization results in the development of the amniotic cavity, formation of bilaminar disc embryonic morphology, an anterior hypoblast pole and posterior domain. The extra-embryonic layer of iDiscoid presents multilineage yolk sac tissue morphogenesis with extra-embryonic mesoderm and lacks trophoblast. Its development captures distinct waves of yolk sac hematopoiesis including the emergence of erythroid, myeloid and lymphoid cells . iDiscoid offers an easy-to-use, high-throughput, reproducible, and scalable platform to probe multifaceted aspects of human development and blood formation at early post-implantation stage. It will provide a tractable human-based model for drug testing, disease modeling, and a unique cell source for regenerative medicine.

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Identification of Erythroid-Enriched Gene Expression in the Mouse Embryonic Yolk Sac using Microdissected Cells

Project description:Primitive erythropoiesis in the mouse yolk sac is followed by definitive erythropoiesis resulting in adult erythrocytes. In comparison to definitive erythropoiesis little is known about the genes that control the embryonic erythroid program. The purpose of this study was to generate a profile of mouse embryonic yolk sac erythroid cells and identify novel regulatory genes differentially expressed in erythroid compared to non-erythroid (epithelial cells). The identification of these genes will contribute to a greater understanding of how the primitive erythroid program is controlled. This work will have clinical implications for treating sickle cell anemia and β-thalassemia. Activating genes in adult erythroid cells that increase embryonic or fetal globin gene expression may be a therapeutic approach to treat individuals with these disorders. Keywords: Comparison between mouse embryonic day 9.5 yolk sac microdissected primitive erythroid precursors and epithelial cells

2008-01-03 | GSE10002 | GEO

Human fetal yolk sac scRNA-seq data (sample ID: F158 for Haniffa Lab; 16099 for HDBR)

Project description:Investigating the blood, immune and stromal cells present in a human fetal embryo in a world first single cell transcriptomic atlas. The embryo was dissected into 12 coronal sections, yolk sac, and yolk sac stalk. Live single cells sorted, with cell suspension then undergoing 10x chromium 5 prime scRNA-seq. This accession contains the yolk sac and yolk sac stalk data from this embryo. A matched accession contains the coronal section data. Lane "WS_wEMB12142156" (from yolk sac) was excluded from downstream analysis due to low fraction reads in cells post-CellRanger QC. Termination procedure for this embryo was medical. The F158_[features...barcodes...matrix].[tsv...mtx].gz files attached to this accession represent raw count data from all the 10x lanes in this accession combined, and as output from CellRanger filtered matrices (CellRanger version 6.0.1 using human reference genome GRCh38-2020-A). One set of count matrices relates to the yolk sac data, and one set of count matrices relates to the yolk sac stalk data.

2022-12-07 | E-MTAB-11673 | biostudies-arrayexpress

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