Induction of Pluripotent Stem Cells from Mouse Embryonic Fibroblasts by Jdp2, Glis1, Essrb and Sall4 (dataset II)
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PROVIDER: PRJNA607286 | ENA |
REPOSITORIES: ENA
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Project description:Reprogramming somatic cells to pluripotency represents a paradigm for cell fate determination. A binary logic of closing and opening chromatin provides a simple way to understand iPSC reprogramming driven by both Yamanaka factors or chemicals. Here we apply this logic to the design a four factor combination, Jdp2, Glis1, Essrb and Sall4 (4F), that reprogram MEFs to chimera competent iPSCs efficiently. RNA- and ATAC-seq reveal differences between JGES and 7F induced pluripotency, 7IP and JGES IP, in transcriptomic and chromatin accessibility dynamics(CAD). Sall4 emerges as a dominant force that can close and open chromatin with the help of Jdp2 and Glis1 in resetting somatic chromatin to a pluripotent state. These results reveal a previously unknown path between somatic and pluripotent states, open a door for cell fate control.
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Project description:Cell fate decision involves rewiring of the genome, but remains poorly understood at the chromatin level. We report a system to reprogramming somatic cells to pluripotency by four factor combination (Sall4, Esrrb, Jdp2, Glis1). Mechanism study demonstrate that the Sall4-NuRD axis plays a critical role in the early phase of reprogramming. These results identify a previously unrecognized role of NuRD in reprogramming, may help establish early chromatin closing as a pre-requisite step in cell fate control.
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Project description:Reprogramming somatic cells to pluripotency represents a paradigm for cell fate determination. A binary logic of closing and opening chromatin provides a simple way to understand iPSC reprogramming driven by both Yamanaka factors or chemicals. Here we apply this logic to the design a seven factor combination, Jdp2, Jhdm1b, Mkk6, Glis1, Nanog, Essrb and Sall4 (7F), that reprogram MEFs to chimera competent iPSCs efficiently. RNA- and ATAC-seq reveal differences between 7F and Yamanaka induced pluripotency, 7IP and YIP, in transcriptomic and chromatin accessibility dynamics(CAD). Sall4 emerges as a dominant force that can close and open chromatin with the help of Jdp2 and Glis1 in resetting somatic chromatin to a pluripotent state. These results reveal a previously unknown path between somatic and pluripotent states, open a door for cell fate control.
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Project description:Reprogramming somatic cells to pluripotency represents a paradigm for cell fate determination. A binary logic of closing and opening chromatin provides a simple way to understand iPSC reprogramming driven by both Yamanaka factors or chemicals. Here we apply this logic to the design a seven factor combination, Jdp2, Jhdm1b, Mkk6, Glis1, Nanog, Essrb and Sall4 (7F), that reprogram MEFs to chimera competent iPSCs efficiently. RNA- and ATAC-seq reveal differences between 7F and Yamanaka induced pluripotency, 7IP and YIP, in transcriptomic and chromatin accessibility dynamics(CAD). Sall4 emerges as a dominant force that can close and open chromatin with the help of Jdp2 and Glis1 in resetting somatic chromatin to a pluripotent state. These results reveal a previously unknown path between somatic and pluripotent states, open a door for cell fate control.
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Project description:Metabolic activity possess a crucial role during cell fate determination. Here, we show that maternal transcriptional factor Glis1 could not only promote normal MEF reprogramming but also enable aging MEF reprogramming. By association ChIP-seq and RNA-seq, we found that Glis1 could bind and activate glycolytic genes, and bind and suppress somatic state genes simultaneously during reprogramming. While knockdown phosphoglyceric kinase (Pgk1) impeded reprogramming efficiency which indicates that Glis1-glycolytic process axes is required for Glis1 function. Metabolic analysis indicated that the level of acetyl-CoA has a significant fluctuation upon Glis1 induction or silence. Acetate, a precursor of acetyl-CoA rescued the effects on reprogramming in a time-dependent manner when knockdown endogenous Glis1. The fluctuation of Ac-CoA changed the level of H3K27Ac, especially in pluripotent genes and “second wave” genes promoter, and activated the expression of endogenous pluripotency genes in advance subsequently. In conclusion, we demonstrate the exactly novel mechanism of Glis1 in pluripotency acquisition.
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