Employing totipotent cells to reconstruct embryogenesis [scRNA-seq]
Ontology highlight
ABSTRACT:
PROVIDER: PRJNA973633 | ENA |
REPOSITORIES: ENA
Dataset's files
| Action | DRS | |||
|---|---|---|---|---|
| SRR24622940_1.fastq.gz | Fastqsanger.gz | |||
| SRR24622940_2.fastq.gz | Fastqsanger.gz | |||
| SRR24622941_1.fastq.gz | Fastqsanger.gz | |||
| SRR24622941_2.fastq.gz | Fastqsanger.gz | |||
| SRR24622942_1.fastq.gz | Fastqsanger.gz |
Items per page: 5 1 - 5 of 22 |
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Project description:Employing totipotent cells to reconstruct embryogenesis
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Project description:Employing totipotent cells to reconstruct embryogenesis [RNA-seq]
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Project description:Blastoids, a structure similar to blastocysts in morphological and molecular level, can be applied to regeneration research. Using totipotent cells to construct blastoids will extend the information of early development to an earlier stage, and explore clues of regeneration. Totipotent blastomere-like cells (TBLCs) are a novel type of stably cultured mouse totipotent cell line generated by inhibiting spliceosomes. Here, we constructed blastoids (TBL-blastoids) in a new three-dimensional culture system using TBLCs. Morphological and transcriptomic analysis revealed TBL-blastoids contained typical morphology and key cell lineages of blastocysts and had higher degree of consistency in developmental rate and morphology compared to other blastoids. Moreover, TBL-blastoids implanted into uterus, induced decidua and even developed to embryonic tissues, indicating their in vivo developmental potential. The expansion and structures of TBL-blastoids in the IVC system also showed their in vitro developmental potential. The efficiency of generating TBL-blastoids and implantation rate suggest the necessity of TE-like component formation. Meanwhile, TBLCs can differentiate into extraembryonic cell lines directly, which provides an alternative strategy for evaluating totipotency. Furthermore, we explored the impacts of senescence, a central role in regeneration, on TBLCs and found that cellular senescence impaired the totipotency of TBLCs and the efficiency of generating blastoids. Also, the in vivo and in vitro developmental potential of TBL-blastoids were declined. In conclusion, the induction of TBLCs into blastoids and extraembryonic cells is valuable for promoting regeneration, early embryonic development study and evaluating totipotency.
2024-03-05 | GSE232715 | GEO
Project description:Blastoids, a structure similar to blastocysts in morphological and molecular level, can be applied to regeneration research. Using totipotent cells to construct blastoids will extend the information of early development to an earlier stage, and explore clues of regeneration. Totipotent blastomere-like cells (TBLCs) are a novel type of stably cultured mouse totipotent cell line generated by inhibiting spliceosomes. Here, we constructed blastoids (TBL-blastoids) in a new three-dimensional culture system using TBLCs. Morphological and transcriptomic analysis revealed TBL-blastoids contained typical morphology and key cell lineages of blastocysts and had higher degree of consistency in developmental rate and morphology compared to other blastoids. Moreover, TBL-blastoids implanted into uterus, induced decidua and even developed to embryonic tissues, indicating their in vivo developmental potential. The expansion and structures of TBL-blastoids in the IVC system also showed their in vitro developmental potential. The efficiency of generating TBL-blastoids and implantation rate suggest the necessity of TE-like component formation. Meanwhile, TBLCs can differentiate into extraembryonic cell lines directly, which provides an alternative strategy for evaluating totipotency. Furthermore, we explored the impacts of senescence, a central role in regeneration, on TBLCs and found that cellular senescence impaired the totipotency of TBLCs and the efficiency of generating blastoids. Also, the in vivo and in vitro developmental potential of TBL-blastoids were declined. In conclusion, the induction of TBLCs into blastoids and extraembryonic cells is valuable for promoting regeneration, early embryonic development study and evaluating totipotency.
2024-03-05 | GSE232634 | GEO
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2024-03-05 | GSE232718 | GEO
Project description:Modelling mouse embryogenesis from chemically induced totipotent stem cells
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Project description:The development of stem-cell-derived models of mammalian embryogenesis has provided invaluable tools for investigating embryo development. However, constructing embryo models that can continuously recapitulate the full developmental trajectory, from zygotic genome activation (ZGA) to gastrulation, remains a major challenge. Here, we developed a new chemical cocktail to induce totipotent-like cells with robust proliferation ability, and leveraged these cells to establish a stepwise protocol to generate a continuous embryo model. This model sequentially mimics mouse embryogenesis from embryonic day 1.5 to 7.5. It recapitulates key developmental milestones, including ZGA in 2-cell embryos, the diversification of embryonic and extraembryonic lineages from 4-cell to 64-cell stages, the formation of blastocysts, and the subsequent development into post-implantation egg cylinders. Notably, these structures can undergo gastrulation, as evidenced by primitive streak formation and the subsequent emergence of several hallmarks of early organogenesis. Our study opens new avenues for modeling mammalian embryogenesis in vitro.
2025-09-18 | GSE287909 | GEO
Project description:Totipotent-Like Cell-Based Embryo Model Recapitulating Mouse Embryogenesis from Pre-Implantation to Gastrulation [scRNA-Seq]
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Project description:The ability to faithfully initiate embryogenesis from a single, induced non-germline cell type, akin to the totipotent blastomeres, remains a significant challenge in developmental and synthetic biology. In this study, we established conditions that enabled the continuous ex utero development of mouse embryo models (EMs), starting solely from the very beginning of chemically induced totipotent-like stem cells (ciTotiSCs) and spanning the pre-implantation morula, blastocysts, and post-gastrulation stages with both embryonic and extraembryonic compartments. These ciTotiSCs self-organized into blastocyst-like structures that closely resembled natural blastocysts in both morphology and lineage segregation. The resulting ciTotiSC-derived EMs (ciToti-EMs) successfully progressed through key developmental milestones, including gastrulation, embryonic axis formation, hematopoiesis and early organogenesis, closely resembling E8.5 natural embryos (NEs). Furthermore, extended culture led to the development of functional cardiac tissues in ciToti-EMs, highly comparable to that of E10.5-NEs. These findings demonstrate an extraordinary ability of a single induced cell type, ciTotiSCs, to autonomously recapitulate the complete spectrum of early mouse embryogenesis. Our ciToti-EM system provides a powerful new model for investigating mammalian embryonic development and opens new avenues for creating multicellular organisms from non-germline cells.
2026-08-08 | GSE292862 | GEO
Project description:The development of stem-cell-derived models of mammalian embryogenesis has provided invaluable tools for investigating embryo development. However, constructing embryo models that can continuously recapitulate the full developmental trajectory, from zygotic genome activation (ZGA) to gastrulation, remains a major challenge. Here, we developed a new chemical cocktail to induce totipotent-like cells with robust proliferation ability, and leveraged these cells to establish a stepwise protocol to generate a continuous embryo model. This model sequentially mimics mouse embryogenesis from embryonic day 1.5 to 7.5. It recapitulates key developmental milestones, including ZGA in 2-cell embryos, the diversification of embryonic and extraembryonic lineages from 4-cell to 64-cell stages, the formation of blastocysts, and the subsequent development into post-implantation egg cylinders. Notably, these structures can undergo gastrulation, as evidenced by primitive streak formation and the subsequent emergence of several hallmarks of early organogenesis. Our study opens new avenues for modeling mammalian embryogenesis in vitro.
2025-09-18 | GSE287908 | GEO