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Mouse complete embryoid development within a yolk sac recapitulates gastrulation, neurulation and early organogenesis

ABSTRACT: Mouse complete embryoid development within a yolk sac recapitulates gastrulation, neurulation and early organogenesis

PROVIDER: PRJNA862479 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR20650500_1.fastq.gz	Fastqsanger.gz
	SRR20650500_2.fastq.gz	Fastqsanger.gz
	SRR20650600_1.fastq.gz	Fastqsanger.gz
	SRR20650600_2.fastq.gz	Fastqsanger.gz
	SRR20650700_1.fastq.gz	Fastqsanger.gz

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Mouse complete embryoid development within a yolk sac recapitulates gastrulation, neurulation and early organogenesis

Project description:Embryo-like structures generated from stem cells can achieve varying developmental milestones, but none have been shown to progress through gastrulation, neurulation, and organogenesis. Here, we show that "ETiX" mouse embryoids, assembled from embryonic stem cells, trophoblast stem cells and inducible extraembryonic endoderm stem cells, can develop into gastrulating embryoids, and beyond to generate neurulating embryoids, which generate the progenitors needed to create the entire organism. The head-folds of ETiX neurulating embryoids show anterior expression of Otx2, defining forebrain and midbrain regions that resemble those of the natural mouse embryo. Neurulating embryoids also develop beating heart-like structures, trunks comprising a neural tube and somites, tail buds containing neuromesodermal progenitors and primordial germ cells, and gut tubes derived from definitive endoderm. Notably, neurulating embryoids also develop a yolk sac with blood islands. Overall, ETiX neurulating embryoid formation strongly resembles natural embryogenesis, advancing embryo-like development further than any other stem-cell derived model and within extra-embryonic membranes.

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Expression data from Tnrc6a (GW182) mutant yolk sac

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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).

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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.

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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.

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Single cell RNA-seq of mouse embryoid bodies and yolk sac

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Project description:Human embryonic yolk sac CITE-seq data

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