atr in 4

ATR-IN-4, a potent inhibitor of ATR (Ataxia telangiectasia mutated gene Rad 3-associated kinase), restricts the growth of DU145 prostate cancer cells and NCI-H460 lung cancer cells, with IC 50 values of 130.9 nM and 41.33 nM, respectively.

PROTAC ATR degrader-2 (Compound 8i) serves as a PROTAC degrader targeting ATR, effectively degrading it in acute myeloid leukemia (AML) cell lines MV-4-11 and MOLM-13, with DC50 values of 22.9 and 34.5 nM, respectively. This compound induces apoptosis and inhibits the proliferation of AML cells. Additionally, PROTAC ATR degrader-2 demonstrates favorable pharmacokinetic properties and potent antitumor activity in a mouse model of AML. (Pink: ATR ligand; Blue: E3 ligase ligand Lenalidomide; Black: linker) [1]