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3D ECM-rich environment sustains the identity of naïve human iPSCs

ABSTRACT: 3D ECM-rich environment sustains the identity of naïve human iPSCs

PROVIDER: PRJNA878795 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR21504241_1.fastq.gz	Fastqsanger.gz
	SRR21504241_2.fastq.gz	Fastqsanger.gz
	SRR21504242_1.fastq.gz	Fastqsanger.gz
	SRR21504242_2.fastq.gz	Fastqsanger.gz
	SRR21504243_1.fastq.gz	Fastqsanger.gz

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Project description:The establishment of in vitro naïve human pluripotent stem cell cultures opened new perspectives for the study of early events in human development. The role of several transcription factors and signalling pathways during maintenance of human naïve pluripotency have been characterized. However, little is known about the role exerted by the extracellular matrix (ECM) and its three-dimensional (3D) organization. Here, using an unbiased and integrated approach combining transcriptional, proteomic and secretome analyses, we found that naïve, but not primed, hiPSC colonies are characterized by a self-organized ECM-rich microenvironment. Based on this, we developed a 3D culture system that supports robust long-term feeder-free self-renewal of naïve hiPSCs, and also allows direct and timely developmental morphogenesis simply by modulating the signalling environment. Our study opens new perspectives for future applications of naïve hiPSCs to study critical stages of human development in 3D starting from a single cell.

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Project description:The establishment of in vitro naïve human pluripotent stem cell cultures opened new perspectives for the study of early events in human development. In the last 5 years the signalling environment promoting human naïve pluripotency has been extensively investigated. However, little is known about the role exerted by the extracellular matrix and three-dimensional organization in naïve maintenance. Here, by using an unbiased and integrated approach we found that naïve, but not primed, hiPSC colonies are characterized by an extracellular matrix-rich microenvironment, and by a specific extracellular matrix fingerprint at transcriptional, proteomic and secretome levels. Based on this, we developed a 3D culture system which supports robust long-term feeder-free expansion of naïve hiPSCs. In this same 3D ECM-rich environment, we can recapitulate timely developmental morphogenesis simply by modulating the signalling environment. Our study opens new perspectives for future applications of naïve hiPSCs to study critical stages of human development in three-dimensions starting from a single cell.

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3D ECM-rich environment sustains the identity of naïve human iPSCs [Naive_3Dvs2D_p6]

Project description:The establishment of in vitro naïve human pluripotent stem cell cultures opened new perspectives for the study of early events in human development. The role of several transcription factors and signaling pathways during maintenance of human naïve pluripotency has been characterized. However, little is known about the role exerted by the extracellular matrix and its three-dimensional organization. Here, using an unbiased and integrated approach combining transcriptional, proteomic and secretome analyses, we found that naïve, but not primed, hiPSC colonies are characterized by a self-organized extracellular matrix (ECM)-rich microenvironment. Based on this, we developed a 3D culture system that supports robust long-term feeder-free self-renewal of naïve hiPSCs, and also allows direct and timely developmental morphogenesis simply by modulating the signalling environment. Our study opens new perspectives for future applications of naïve hiPSCs to study critical stages of human development in 3D starting from a single cell

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