To uncover the precise mechanisms coordinating proliferation and fate choice of stem cells, in this issue of Molecular Cell and in an accompanying paper in Cell Reports, Mazo and colleagues (Petruk et al. 2017a, 2017b) reveal that delayed accumulation of H3K27me3 on nascent DNA is essential to recruit pioneer transcription factors in stem cell differentiation.
Keywords: DNA replication; ESC; H3K27me3; HPC; KDM6A; KDM6B; PRC2; UTX; cell cycle; stem cell differentiation.
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