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The oncogene Etv5 promotes MET in somatic reprogramming and orchestrates epiblast/primitive endoderm specification during mESCs differentiation.

ABSTRACT: Unipotent spermatogonial stem cells (SSCs) can be efficiently reprogrammed into pluripotent stem cells only by manipulating the culture condition, without introducing exogenous reprogramming factors. This phenotype raises the hypothesis that the endogenous transcription factors (TFs) in SSCs may facilitate reprogramming to acquire pluripotency. In this study, we screened a pool of SSCs TFs (Bcl6b, Lhx1, Foxo1, Plzf, Id4, Taf4b, and Etv5), and found that oncogene Etv5 could dramatically increase the efficiency of induced pluripotent stem cells (iPSCs) generation when combined with Yamanaka factors. We also demonstrated that Etv5 could promote mesenchymal-epithelial transition (MET) at the early stage of reprogramming by regulating Tet2-miR200s-Zeb1 axis. In addition, Etv5 knockdown in mouse embryonic stem cells (mESCs) could decrease the genomic 5hmC level by downregulating Tet2. Furthermore, the embryoid body assay revealed that Etv5 could positively regulate primitive endoderm specification through regulating Gata6 and negatively regulate epiblast specification by inhibiting Fgf5 expression. In summary, our findings provide insights into understanding the regulation mechanisms of Etv5 under the context of somatic reprogramming, mESCs maintenance, and differentiation.


PROVIDER: S-EPMC5833841 | BioStudies | 2018-01-01

REPOSITORIES: biostudies

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