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Zscan4 transiently reactivates early embryonic genes during the generation of induced pluripotent stem cells.


ABSTRACT: The generation of induced pluripotent stem cells (iPSCs) by the forced expression of defined transcription factors in somatic cells holds great promise for the future of regenerative medicine. However, the initial reprogramming mechanism is still poorly understood. Here we show that Zscan4, expressed transiently in2-cell embryos and embryonic stem cells (ESCs), efficiently produces iPSCs from mouse embryo fibroblasts when coexpressed with Klf4, Oct4, and Sox2. Interestingly, the forced expression of Zscan4 is required onlyfor the first few days of iPSC formation. Microarray analysis revealed transient and early induction of preimplantation-specific genes in a Zscan4-dependent manner. Our work indicates that Zscan4 is a previously unidentified potent natural factor that facilitates the reprogramming process and reactivates early embryonic genes.

SUBMITTER: Hirata T 

PROVIDER: S-EPMC3250575 | biostudies-literature | 2012

REPOSITORIES: biostudies-literature

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Zscan4 transiently reactivates early embryonic genes during the generation of induced pluripotent stem cells.

Hirata Tetsuya T   Amano Tomokazu T   Nakatake Yuhki Y   Amano Misa M   Piao Yulan Y   Hoang Hien G HG   Ko Minoru S H MS  

Scientific reports 20120104


The generation of induced pluripotent stem cells (iPSCs) by the forced expression of defined transcription factors in somatic cells holds great promise for the future of regenerative medicine. However, the initial reprogramming mechanism is still poorly understood. Here we show that Zscan4, expressed transiently in2-cell embryos and embryonic stem cells (ESCs), efficiently produces iPSCs from mouse embryo fibroblasts when coexpressed with Klf4, Oct4, and Sox2. Interestingly, the forced expressio  ...[more]

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