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Species-Specific Developmental Timing is Maintained by Pluripotent Stem Cells Ex Utero

ABSTRACT: Species-Specific Developmental Timing is Maintained by Pluripotent Stem Cells Ex Utero

OTHER RELATED OMICS DATASETS IN: GSE90053

PROVIDER: PRJNA354394 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR5035950.fastq.gz	Fastqsanger.gz
	SRR5035960.fastq.gz	Fastqsanger.gz
	SRR5035970.fastq.gz	Fastqsanger.gz
	SRR5035980.fastq.gz	Fastqsanger.gz
	SRR5035990.fastq.gz	Fastqsanger.gz

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Species-specific developmental timing is maintained by pluripotent stem cells ex utero.

Project description:How species-specific developmental timing is controlled is largely unknown. By following human embryonic stem (ES) cell and mouse epiblast stem (EpiS) cell differentiation through detailed RNA-sequencing time courses, here we show that pluripotent stem cells closely retain in vivo species-specific developmental timing in vitro. In identical neural differentiation conditions in vitro, gene expression profiles are accelerated in mouse EpiS cells compared to human ES cells with relative rates of differentiation closely reflecting the rates of progression through the Carnegie stages in utero. Dynamic Time Warping analysis identified 3389 genes that were regulated more quickly in mouse EpiS cells and identified none that were regulated more quickly in human ES cells. Interestingly, we also find that human ES cells differentiated in teratomas maintain the same rate of differentiation observed in vitro in spite of being grown in a mouse host. These results suggest the existence of a cell autonomous, species-specific developmental clock that pluripotent stem cells maintain even out of context of an intact embryo.

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Species-Specific Developmental Timing is Maintained by Pluripotent Stem Cells Ex Utero

Project description:We performed whole transcriptome RNA sequencing experiments on two sets of differentiation time course starting from human ES cells (EGFP-H1) and mouse EGFP-EpiS cells: (1) in vitro neural differentiation, and (2) teratoma formation

2017-02-10 | GSE90053 | GEO

Ex utero Mouse Embryogenesis from Pre-Gastrulation to Late-Organogenesis

Project description:Establishment of the mammalian body plan occurs shortly after the embryo implants into the maternal uterus, and our understanding of post-implantation developmental processes remains limited. While methods for in vitro culture of pre- and peri-implantation mouse embryos are routinely utilized, approaches for robust culture of post-implantation embryos from egg cylinder stages until advanced organogenesis remain to be established. We develop herein highly stable ex utero post-implantation mouse embryo culture platforms, that enable appropriate development of embryos before gastrulation (E5.5) until the hind limb formation stage (E11). Late gastrulating embryos (E7.5) are grown in 3D rotating bottles settings, while extended culture from pre-gastrulation stages (E5.5 or E6.5) requires a combination of novel static and rotating bottle culture protocols. Histological, molecular, and single cell RNA-seq analysis validate that the ex utero developed embryos recapitulate precisely in utero development. This culture system is amenable to introducing a variety of embryonic perturbations and micro-manipulations that can be followed ex utero for up to 6 days. Establishment of a system to robustly grow normal mouse embryos ex utero from pre-gastrulation to advanced organogenesis represents a valuable tool to investigate post-implantation embryogenesis, eliminating the uterine barrier to mechanistically interrogate morphogenesis and tissue specification in mammals.

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Project description:Different types of in vitro expanded stem cells can contribute to embryonic or extra-embryonic compartments after microinjection into blastocysts. However, whether stem cells could give rise to advanced gastrulating whole embryo-like structures with both embryonic and extra-embryonic compartments, without relying on a micro-injected host embryo, remains to be achieved. Thus far, in vitro aggregated stem cells have failed to generate post-gastrulation embryos ex utero or in utero, which partially resulted from the lack of methods for prolonged expansion of embryos until advanced developmental stages ex utero. Here we adapt recently optimized platform and conditions for ex utero growth of natural embryos, to generate complete mouse synthetic embryos, with both embryonic and extra-embryonic compartments, and by starting solely from naïve ESCs. The latter is achieved following co-aggregating non-transduced naïve ESCs, with Cdx2- and Gata4- transiently pulsed naïve ESCs, to promote their trophoblast and primitive endoderm lineage induction, respectively. The obtained synthetic embryos adequately advance in this platform through developmental milestones and accomplish gastrulation and develop organs progenitors within normally developed extra-embryonic compartments. Our findings highlight the plastic developmental potential of the naïve pluripotent state to functionally self-organize and reconstitute the entire early mammalian embryo.

2022-07-31 | GSE208680 | GEO

Ex Utero Development of Post-Gastrulation Synthetic Mouse Embryos Generated Solely from Naïve Pluripotent Stem Cells [RNA-seq]

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Gene expression profile at single cell level of in utero and ex vivo peri-implantation mouse embryos

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