cytoplasmic and nuclear taz exert distinct functions in regulating primed pluripotency
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2017
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Abstract
Mouse epiblast stem cells (mEpiSCs) and human embryonic stem cells (hESCs) are primed pluripotent stem cells whose self-renewal can be maintained through cytoplasmic stabilization and retention of β-catenin. The underlying mechanism, however, remains largely unknown. Here, we show that cytoplasmic β-catenin interacts with and retains TAZ, a Hippo pathway effector, in the cytoplasm. Cytoplasmic retention of TAZ promotes mEpiSC self-renewal in the absence of nuclear β-catenin, whereas nuclear translocation of TAZ induces mEpiSC differentiation. TAZ is dispensable for naive mouse embryonic stem cell (mESC) self-renewal but required for the proper conversion of mESCs to mEpiSCs. The self-renewal of hESCs, like that of mEpiSCs, can also be maintained through the cytoplasmic retention of β-catenin and TAZ. Our study indicates that how TAZ regulates cell fate depends on not only the cell type but also its subcellular localization.
| Reference Key |
zhou2017stemcytoplasmic
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|---|---|
| Authors | ;Xingliang Zhou;Jean Paul Chadarevian;Bryan Ruiz;Qi-Long Ying |
| Journal | nature reviews gastroenterology & hepatology |
| Year | 2017 |
| DOI |
10.1016/j.stemcr.2017.07.019
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