The role of PU.1 and GATA-1 transcription factors during normal and leukemogenic hematopoiesis

Hematopoiesis is coordinated by a complex regulatory network of transcription factors and among them PU.1 (Spi1, Sfpi1) represents a key molecule. This review summarizes the indispensable requirement of PU.1 during hematopoietic cell fate decisions and how the function of PU.1 can be modulated by protein-protein interactions with additional factors. The mutual negative regulation between PU.1 and GATA-1 is detailed within the context of normal and leukemogenic hematopoiesis and the concept of 'differentiation therapy' to restore normal cellular differentiation of leukemic cells is discussed. Leukemia (2010) 24, 1249-1257; doi:10.1038/leu.2010.104; published online 3 June 2010