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Endothelial Differentiation of CCM1 Knockout iPSCs Triggers the Establishment of a Specific Gene Expression Signature

ABSTRACT: Endothelial Differentiation of CCM1 Knockout iPSCs Triggers the Establishment of a Specific Gene Expression Signature

PROVIDER: PRJNA884848 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR21728640_1.fastq.gz	Fastqsanger.gz
	SRR21728640_2.fastq.gz	Fastqsanger.gz
	SRR21728641_1.fastq.gz	Fastqsanger.gz
	SRR21728641_2.fastq.gz	Fastqsanger.gz
	SRR21728642_1.fastq.gz	Fastqsanger.gz

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Project description:Induced pluripotent stem cells (iPSCs) are commonly generated by transduction of Oct4, Sox2, Klf4 and Myc (OSKM) into somatic cells. Though iPSCs are pluripotent, they frequently exhibit high variation in their quality as measured by chimera contribution and tetraploid (4n) complementation. Thus, improving the quality of iPSCs is an indispensable prerequisite for future iPSC-based therapy. Here we show that one major determinant for iPSCs quality is the combination of reprograming factor selected. Ectopic expression of Sall4, Nanog, Esrrb and Lin28 (SNEL) in MEFs efficiently generated high quality iPSCs as compared to other combinations of factors. SNEL-iPSCs produced approximately 5 times more efficiently “all-iPSC” mice compared to OSKM-iPSCs. While differentially methylated regions, transcript number of master regulators, establishment of ESC-specific super enhancers, and global aneuploidy were comparable between the lines, aberrant expression of 1,765 genes, trisomy of chromosome 8 and abnormal H2A.X deposition were frequently observed in poor quality OSK-iPSCs and OSKM-iPSCs. Whole-genome single-base resolution MethylC sequencing collected from a variety of Mouse pluripotent cells To reveal the DNA methylation signature associated with developmental competence, we selected the following groups of iPSC lines for whole-genome bisulfite sequencing: i) "Poor quality" iPSCs: This group included the three OSKM-iPSC lines Nanog-GFP OSKM#2, Oct4-GFP OSKM#2 and KH2 OSKM(Stadtfeld et al., 2010), that either did not produce fully developed pups or produced very low number of pups; ii) "Good quality" iPSCs: This group included BC_2 OSKM (Carey et al., 2011) and Nanog-GFP SNEL#3, both of which gave rise to live, normal pups that survived only few hours; iii) "High quality" iPSCs consisting of Nanog-GFP SNEL#2 and Oct4-GFP SNEL#1, both of which generated live pups that survived postnatally (representative pups from each iPSC group are shown in Figure S3A). iv) As controls we used Nanog-GFP, Oct4-GFP and KH2 (Beard et al., 2006) ESCs. Note that all cells were cultured in 2i medium but not in mES medium.

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Endothelial Differentiation of CCM1 Knockout iPSCs Triggers the Establishment of a Specific Gene Expression Signature

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