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  • Transcription factor-driven...
    Theilgaard-Mönch, Kim; Pundhir, Sachin; Reckzeh, Kristian; Su, Jinyu; Tapia, Marta; Furtwängler, Benjamin; Jendholm, Johan; Jakobsen, Janus Schou; Hasemann, Marie Sigurd; Knudsen, Kasper Jermiin; Cowland, Jack Bernard; Fossum, Anna; Schoof, Erwin; Schuster, Mikkel Bruhn; Porse, Bo T.

    Nature communications, 06/2022, Volume: 13, Issue: 1
    Journal Article

    Abstract Differentiation of multipotent stem cells into mature cells is fundamental for development and homeostasis of mammalian tissues, and requires the coordinated induction of lineage-specific transcriptional programs and cell cycle withdrawal. To understand the underlying regulatory mechanisms of this fundamental process, we investigated how the tissue-specific transcription factors, CEBPA and CEBPE, coordinate cell cycle exit and lineage-specification in vivo during granulocytic differentiation. We demonstrate that CEBPA promotes lineage-specification by launching an enhancer-primed differentiation program and direct activation of CEBPE expression. Subsequently, CEBPE confers promoter-driven cell cycle exit by sequential repression of MYC target gene expression at the G1/S transition and E2F-meditated G2/M gene expression, as well as by the up-regulation of Cdk1/2/4 inhibitors. Following cell cycle exit, CEBPE unleashes the CEBPA-primed differentiation program to generate mature granulocytes. These findings highlight how tissue-specific transcription factors coordinate cell cycle exit with differentiation through the use of distinct gene regulatory elements.