Linc1548 Promotes the Transition of Epiblast Stem Cells Into Neural Progenitors by Engaging OCT6 and SOX2
STEM CELLS(2022)
Abstract
The transition of embryonic stem cells from the epiblast stem cells (EpiSCs) to neural progenitor cells (NPCs), called the neural induction process, is crucial for cell fate determination of neural differentiation. However, the mechanism of this transition is unclear. Here, we identified a long non-coding RNA (linc1548) as a critical regulator of neural differentiation of mouse embryonic stem cells (mESCs). Knockout of linc1548 did not affect the conversion of mESCs to EpiSCs, but delayed the transition from EpiSCs to NPCs. Moreover, linc1548 interacts with the transcription factors OCT6 and SOX2 forming an RNA-protein complex to regulate the transition from EpiSCs to NPCs. Finally, we showed that Zfp521 is an important target gene of this RNA-protein complex regulating neural differentiation. Our findings prove how the intrinsic transcription complex is mediated by a lncRNA linc1548 and can better understand the intrinsic mechanism of neural fate determination.
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Key words
mouse embryonic stem cells,differentiation,neural progenitor cells,long noncoding RNA,Zfp521
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