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Characterization of a Potent and Orally Bioavailable Lys-Covalent Inhibitor of Apoptosis Protein (IAP) Antagonist.

Authors :
Udompholkul P
Garza-Granados A
Alboreggia G
Baggio C
McGuire J
Pegan SD
Pellecchia M
Source :
Journal of medicinal chemistry [J Med Chem] 2023 Jun 22; Vol. 66 (12), pp. 8159-8169. Date of Electronic Publication: 2023 Jun 01.
Publication Year :
2023

Abstract

We have recently reported on the use of aryl-fluorosulfates in designing water- and plasma-stable agents that covalently target Lys, Tyr, or His residues in the BIR3 domain of the inhibitor of the apoptosis protein (IAP) family. Here, we report further structural, cellular, and pharmacological characterizations of this agent, including the high-resolution structure of the complex between the Lys-covalent agent and its target, the BIR3 domain of X-linked IAP (XIAP). We also compared the cellular efficacy of the agent in two-dimensional (2D) and three-dimensional (3D) cell cultures, side by side with the clinical candidate reversible IAP inhibitor LCL161. Finally, in vivo pharmacokinetic studies indicated that the agent was long-lived and orally bioavailable. Collectively our data further corroborate that aryl-fluorosulfates, when incorporated correctly in a ligand, can result in Lys-covalent agents with pharmacodynamic and pharmacokinetic properties that warrant their use in the design of pharmacological probes or even therapeutics.

Details

Language :
English
ISSN :
1520-4804
Volume :
66
Issue :
12
Database :
MEDLINE
Journal :
Journal of medicinal chemistry
Publication Type :
Academic Journal
Accession number :
37262387
Full Text :
https://doi.org/10.1021/acs.jmedchem.3c00467