During development, blood is generated in the yolk sac by differentiation of haemato-endothelial mesoderm into haematopoietic progenitors. Using CRISPR-Cas9 screens, the authors identify Etv2, Smad1, Ldb1, Six4 and Zbtb7b as regulators of haemato-endothelial mesoderm commitment. Lack of these regulators gave rise to mesodermal subsets with a defined lineage differentiation bias.
- Michael Teske
- Tobias Wertheimer
- Nina Schmolka