AZD5582 (dihydrochloride)

AZD5582 dihydrochloride is an antagonist of the inhibitor of apoptosis proteins (IAPs), which binds to the BIR3 domains cIAP1, cIAP2, and XIAP with IC₅₀s of 15, 21, and 15 nM, respectively. AZD5582 induces apoptosis^[1]. In Vitro: AZD5582 (20 nM; 48 hours) inhibits cell viability by cooperation with IFNγ or viral double-stranded RNA (dsRNA) in H1975 NSCLC cells^[2].
AZD5582 (20 nM; 17 or 25 hours) downregulates cIAP-1, activates RIPK1 (upstream regulator of caspase-8), and triggers the activation of extrinsic (caspase-8) and intrinsic (caspase-9) apoptosis pathways, causing the cleavage of caspase-3 and caspase-7^[2].
AZD5582 (20 nM; 48 hours) involves in apoptosis due to induction of cell death and active caspase-3/8 activities by AZD5582 and IFNγ co-treatment in HCC827 NSCLC cells^[2]. In Vivo: AZD5582 (intravenous injection; 0.1-3.0 mg/kg; once a week; 2 weeks) causes degradation of cIAP1 and caspase 3 cleavage in tumor cells, and after a two-week treatment, the tumors largely resolved; when the mice are given a medium dose (0.5 mg/kg) of AZD5582, cIAP1 degrades after administration, but it takes a while time to reach apoptosis-inducing effect^[1].