Zfp281 orchestrates interconversion of pluripotent states by engaging Ehmt1 and Zic2.

Daniela Mayer, Michael B Stadler, Melanie Rittirsch, Daniel Hess, Ilya Lukonin, Maria Winzi, Austin Smith, Frank Buchholz, Joerg Betschinger

The EMBO journal 2020 Jan 15

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Developmental cell fate specification is a unidirectional process that can be reverted in response to injury or experimental reprogramming. Whether differentiation and de-differentiation trajectories intersect mechanistically is unclear. Here, we performed comparative screening in lineage-related mouse naïve embryonic stem cells (ESCs) and primed epiblast stem cells (EpiSCs), and identified the constitutively expressed zinc finger transcription factor (TF) Zfp281 as a bidirectional regulator of cell state interconversion. We showed that subtle chromatin binding changes in differentiated cells translate into activation of the histone H3 lysine 9 (H3K9) methyltransferase Ehmt1 and stabilization of the zinc finger TF Zic2 at enhancers and promoters. Genetic gain-of-function and loss-of-function experiments confirmed a critical role of Ehmt1 and Zic2 downstream of Zfp281 both in driving exit from the ESC state and in restricting reprogramming of EpiSCs. Our study reveals that cell type-invariant chromatin association of Zfp281 provides an interaction platform for remodeling the cis-regulatory network underlying cellular plasticity. © 2019 Friedrich Miescher Institute for Biomedical Research.

Citation

Daniela Mayer, Michael B Stadler, Melanie Rittirsch, Daniel Hess, Ilya Lukonin, Maria Winzi, Austin Smith, Frank Buchholz, Joerg Betschinger. Zfp281 orchestrates interconversion of pluripotent states by engaging Ehmt1 and Zic2. The EMBO journal. 2020 Jan 15;39(2):e102591