DB1976 是一种 DB270 的硒烯类似物，是一种高效且可渗透细胞的转录因子 PU.1 的抑制剂。在体外，DB1976 有效抑制 PU.1 结合 (IC50 为 10 nM)，可强烈抑制 PU.1/DNA 复合物 (具有高 DB1976-λB 亲和力，KD 为 12 nM)。DB1976 具有诱导细胞凋亡的作用。

DB1976 is a selenophene analog of DB270 and a potent and cell-permeable fully efficacious transcription factor PU.1 inhibitor. DB1976 potently inhibits PU.1 binding (IC50 of 10 nM) and strongly inhibits the PU.1/DNA complex (with high DB1976-λB affinity, KD of 12 nM) in vitro. DB1976 has Apoptosis-inducing effect.

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].

1557397-51-9

C20H16N8Se

447.35

DB1976

(< 1 mg/ml refers to the product slightly soluble or insoluble )
Powder: -20°C for 3 years
In solvent: -80°C for 2 years