DB1976

DB1976 is a classic heterocyclic dication (a single heteroatom) with strong affinity and selectivity for AT-rich sequences commonly found in cognate DNA binding sites for PU.1^[2].
DB1976 inhibits PU.1-dependent transactivation of the reporter in a dose-dependent manner with an IC₅₀ value of 2.4 μM in PU.1-negative HEK293 cells^[3].
DB1976 treatment leads to a profound decrease in the growth of PU.1 URE^–/– AML cells (IC₅₀ of 105 μM), while showing little effect on normal hematopoietic cells at similar concentrations (IC₅₀ of 334 μM)^[3].
DB1976 treatment leads to a 1.6-fold increase in apoptotic cells in murine PU.1 URE^–/– AML cells, and observed similar effects in human MOLM13 cells^[3].
DB1976 treatment leads to a significant decrease in the number of viable cells (primary human AML cells) (mean decrease of 81%) and clonogenic capacity (mean decrease of 36%) compared with vehicle-treated cells. The apoptotic cell fraction increased on average by 1.5-fold with DB1976^[3].

MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.