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The molecular logic of Nanog-induced self-renewal in mouse embryonic stem cells

Abstract : Transcription factor networks, together with histone modifications and signalling pathways, underlie the establishment and maintenance of gene regulatory architectures associated with the molecular identity of each cell type. However, how master transcription factors individually impact the epigenomic landscape and orchestrate the behaviour of regulatory networks under different environmental constraints is only partially understood. Here, we show that the transcription factor Nanog deploys multiple distinct mechanisms to enhance embryonic stem cell self-renewal. In the presence of LIF, which fosters self-renewal, Nanog rewires the pluripotency network by promoting chromatin accessibility and binding of other pluripotency factors to thousands of enhancers. In the absence of LIF, Nanog blocks differentiation by sustaining H3K27me3, a repressive histone mark, at developmental regulators. Among those, we show that the repression of Otx2 plays a preponderant role. Our results underscore the versatility of master transcription factors, such as Nanog, to globally influence gene regulation during developmental processes.
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Victor Heurtier, Nick Owens, Inma González, Florian Mueller, Caroline Proux, et al.. The molecular logic of Nanog-induced self-renewal in mouse embryonic stem cells. Nature Communications, Nature Publishing Group, 2019, 10 (1), pp.1109. ⟨10.1038/s41467-019-09041-z⟩. ⟨pasteur-02083187⟩

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