AZD5582 is a divalent AVPI motif-based Smac (DIABLO) mimetic (SMC) that acts a potent apoptosis protein repeat (BIR) domain-targeting antagonist against inhibitor of apoptosis proteins (IAPs) cIAP1/2 (BIR3 IC50 = 15/21 nM against 2.5 nM AbuRPFK-5FAM) and XIAP (BIR2/3 IC50 = 21/15 nM). AZD5582 abolishes cellular XIAP-caspase-9 interaction (1 μM, 4 hrs), induces cIAP1/2 degradation (EC50 = 0.1 nM, 1 hr) and apoptosis (GI50 <60 pM, 48 hrs) in MDA-MB-231 breast cancer cultures. AZD5582 causes substantial tumor regression by inducing cIAP1 degradation and apoptosis in tumor cells in MDA-MB-231 xenograft-bearing mice in vivo (3.0 mg/kg/wk i.v.).
Divalent Smac mimetic compound (SMC) as a potent BIR domain-targeting antagonist against inhibitor of apoptosis proteins (IAPs) cIAP1/2 & XIAP in vitro and in vivo.
Small-molecule inhibitor of apoptosis (IAP) antagonists, called Smac mimetic compounds (SMCs), sensitize tumours to TNF-α-induced killing while simultaneously blocking TNF-α growth-promoting activities. SMCs also regulate several immunomodulatory properties within immune cells. We report that SMCs synergize with innate immune stimulants
On the one hand, AZD5582, an inhibitor of inhibitor of apoptosis family proteins (IAP), leads to cellular growth arrest and induction of apoptosis in head and neck squamous cell carcinoma (HNSCC) cell lines. On the other hand, it is a
Anti-PD-1 immune checkpoint blockers can induce sustained clinical responses in cancer but how they function in vivo remains incompletely understood. Here, we combined intravital real-time imaging with single-cell RNA sequencing analysis and mouse models to uncover anti-PD-1 pharmacodynamics directly within tumors.
Journal of medicinal chemistry, 56(24), 9897-9919 (2013-12-11)
A series of dimeric compounds based on the AVPI motif of Smac were designed and prepared as antagonists of the inhibitor of apoptosis proteins (IAPs). Optimization of cellular potency, physical properties, and pharmacokinetic parameters led to the identification of compound
Inhibitor of apoptosis proteins (IAPs) plays an important role in controlling cancer cell survival. IAPs have therefore attracted considerable attention as potential targets in anticancer therapy. In this study, we investigated the anti-tumor effect of AZD5582, a novel small-molecule IAP
