Role of DPPA2 and 4 in chromatin bivalency and multi-lineage commitment
|Title||Role of DPPA2 and 4 in chromatin bivalency and multi-lineage commitment|
|Sponsor||European Research Council (ERC)|
|Institution||Wolf Reik Lab|
Associated cell lines
Dppa2 and 4 are small chromatin bound proteins exclusively expressed during pluripotency in mouse. We found that they are needed in mouse ESCs to target bivalency (H3K4me3 and H3K27me3) to a subset of bivalent promoters. In the absence of Dppa2 and 4 bivalency and chromatin accessibility is lost, and DNA methylation gained, and developmental genes fail to be expressed during differentiation (https://www.biorxiv.org/content/10.1101/832873v1, Nature Structural and Molecular Biology, in press). DPPA2 and 4 are conserved in human and in this project we propose to characterise their expression and their role in human pluripotency and differentiation. DPPA2 and 4 will be deleted in hESCs by Crispr/Cas9 targeting, and transcriptional and epigenetic properties of the cells will be studied during the pluripotent state and during in vitro differentiation.