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Kinetics and molecular hallmarks of the acquisition of developmental pluripotency during cellular reprogramming [RNA-Seq]

ABSTRACT: Kinetics and molecular hallmarks of the acquisition of developmental pluripotency during cellular reprogramming [RNA-Seq]

PROVIDER: PRJNA416317 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR6234900_1.fastq.gz	Fastqsanger.gz
	SRR6234900_2.fastq.gz	Fastqsanger.gz
	SRR6234901_1.fastq.gz	Fastqsanger.gz
	SRR6234901_2.fastq.gz	Fastqsanger.gz
	SRR6234902_1.fastq.gz	Fastqsanger.gz

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Kinetics and molecular hallmarks of the acquisition of developmental pluripotency during cellular reprogramming

Project description:Kinetics and molecular hallmarks of the acquisition of developmental pluripotency during cellular reprogramming

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Kinetics and molecular hallmarks of the acquisition of developmental pluripotency during cellular reprogramming [RNA-Seq]

Project description:The ability of induced pluripotent stem cells (iPSCs) to differentiate into all adult cell types makes them attractive for basic research and regenerative medicine applications, but it remains unknown when and how this hallmark of the pluripotent state is established. Here, we pinpoint the acquisition of developmental pluripotency in a suitable reprogramming system and show that nascent iPSCs abruptly and without extensive maturation period in culture become capable of generating all tissues upon injection into preimplantation embryos. Strikingly, the developmental potential of nascent iPSCs is comparable to or even surpasses that of high-quality established pluripotent cells. Further functional assays as well as genome-wide transcriptional and chromatin analyses suggest that cells acquiring developmental pluripotency exhibit a unique combination of molecular and functional properties that distinguish them from canonical pluripotency states. These include reduced clonal self-renewal potential and the elevated expression of transcriptional regulators of postimplantation development. Our observations close an important gap in our understanding of induced pluripotency and provide an improved roadmap of cellular reprogramming with ramifications for the biomedical use of iPSCs.

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Kinetics and molecular hallmarks of the acquisition of developmental pluripotency during cellular reprogramming

Project description:This SuperSeries is composed of the SubSeries listed below.

2018-01-03 | GSE106334 | GEO

Stirred suspension bioreactors maintain naïve pluripotency of human pluripotent stem cells (hPSCs)

Project description:Although cell therapies require large numbers of quality-controlled hPSCs, existing technologies are limited in their ability to efficiently grow and scale stem cells. We report here that cell-state conversion from primed-to-naïve pluripotency enhances the biomanufacturing of hPSCs. Naïve hPSCs exhibit superior growth kinetics and aggregate formation characteristics in stirred suspension bioreactors compared to their primed counterparts. Moreover, we demonstrate the role of the bioreactor mechanical environment in the maintenance of naïve pluripotency, through transcriptomic enrichment of mechano-sensing signaling for cells in the bioreactor along with a decrease in expression of lineage-specific and primed pluripotency hallmarks. Bioreactor-cultured, naïve hPSCs express epigenetic regulatory transcripts associated with naïve pluripotency, and display hallmarks of X-chromosome reactivation. They exhibit robust production of naïve pluripotency metabolites and display reduced expression of primed pluripotency cell surface markers. We also show that these cells retain the ability to undergo targeted differentiation into beating cardiomyocytes, hepatocytes, and neural rosettes. They additionally display faster kinetics of teratoma formation compared to their primed counterparts. Naïve bioreactor hPSCs also retain structurally stable chromosomes. Our research corroborates that converting hPSCs to the naïve state enhances hPSC manufacturing and indicates a potentially important role for the bioreactor’s mechanical environment in maintaining naïve pluripotency.

2020-05-08 | ST001377 | MetabolomicsWorkbench

Stirred suspension bioreactors maintain naïve pluripotency of human pluripotent stem cells (hPSCs)

Project description:Although cell therapies require large numbers of quality-controlled hPSCs, existing technologies are limited in their ability to efficiently grow and scale stem cells. We report here that cell-state conversion from primed-to-naïve pluripotency enhances the biomanufacturing of hPSCs. Naïve hPSCs exhibit superior growth kinetics and aggregate formation characteristics in stirred suspension bioreactors compared to their primed counterparts. Moreover, we demonstrate the role of the bioreactor mechanical environment in the maintenance of naïve pluripotency, through transcriptomic enrichment of mechano-sensing signaling for cells in the bioreactor along with a decrease in expression of lineage-specific and primed pluripotency hallmarks. Bioreactor-cultured, naïve hPSCs maintain epigenetic hallmarks of naïve pluripotency, exhibit robust production of naïve pluripotency metabolites, and display reduced expression of primed pluripotency cell surface markers. We also show that these cells retain the ability to undergo targeted differentiation into beating cardiomyocytes, hepatocytes and neural rosettes. They additionally display faster kinetics of teratoma formation compared to their primed counterparts. Naïve bioreactor hPSCs also retain structurally stable chromosomes. Our research corroborates that converting hPSCs to the naïve state enhances hPSC manufacturing and indicates a potentially important role for the bioreactor’s mechanical environment in maintaining naïve pluripotency.

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Frequent and Transient Acquisition of Pluripotency During Somatic Cell Trans-Differentiation with iPSCs Reprogramming Factors (RNA-Seq)

Project description:Recent reports have proposed a new paradigm for obtaining mature somatic cell types from fibroblasts without going through a pluripotent state, by briefly expressing canonical iPSC reprogramming factors Oct4, Sox2, Klf4 and c-Myc (abbreviated as OSKM), in cells expanded in lineage differentiation promoting conditions. Here we apply genetic lineage tracing for endogenous Nanog, Oct4 and X chromosome reactivation during OSKM induced trans-differentiation, as these molecular events mark final stages for acquisition of induced pluripotency. Remarkably, the vast majority of reprogrammed cardiomyocytes or neural stem cells derived from mouse fibroblasts via OSKM mediated trans-differentiation were attained after transient acquisition of pluripotency, and followed by rapid differentiation. Our findings underscore a molecular and functional coupling between inducing pluripotency and obtaining “trans-differentiated” somatic cells via OSKM induction, and have implications on defining molecular trajectories assumed during different cell reprogramming methods. poly RNA-Seq was measured before, during and after conversion of mouse embryonic fibroblasts to neural stem cells using OSKM trans-differentiation method.

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