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Reprogramming of somatic cells to a pluripotent state via expression of Oct4, Klf4, Myc, and Sox2 is a multistep process involving phased changes in gene expression. Here, we focus on the later stages of reprogramming, termed maturation and stabilization. We show that the stabilization phase and the acquisition of pluripotency are dependent on the removal of transgene expression late in the maturation...
Somatic cells can be reprogrammed to induced pluripotent stem cells (iPSCs) by expression of defined embryonic factors. However, little is known of the molecular mechanisms underlying the reprogramming process. Here we explore somatic cell reprogramming by exploiting a secondary mouse embryonic fibroblast model that forms iPSCs with high efficiency upon inducible expression of Oct4, Klf4, c-Myc, and...