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Structure of ARG1 complex with pyrrolidine-based non-boronic acid inhibitor 6Structure of ARG1 complex with pyrrolidine-based non-boronic acid inhibitor 6
Structural highlights
DiseaseARGI1_HUMAN Defects in ARG1 are the cause of argininemia (ARGIN) [MIM:207800; also known as hyperargininemia. Argininemia is a rare autosomal recessive disorder of the urea cycle. Arginine is elevated in the blood and cerebrospinal fluid, and periodic hyperammonemia occurs. Clinical manifestations include developmental delay, seizures, mental retardation, hypotonia, ataxia, progressive spastic quadriplegia.[1] [2] FunctionPublication Abstract from PubMedInhibiting Arginase 1 (ARG1), a metalloenzyme that hydrolyzes l-arginine in the urea cycle, has been demonstrated as a promising therapeutic avenue in immuno-oncology through the restoration of suppressed immune response in several types of cancers. Most of the currently reported small molecule inhibitors are boronic acid based. Herein, we report the discovery of non-boronic acid ARG1 inhibitors through virtual screening. Biophysical and biochemical methods were used to experimentally profile the hits while X-ray crystallography confirmed a class of trisubstituted pyrrolidine derivatives as optimizable alternatives for the development of novel classes of immuno-oncology agents targeting this enzyme. Discovery of non-boronic acid Arginase 1 inhibitors through virtual screening and biophysical methods.,Gathiaka S, Palte RL, So SS, Chai X, Richard Miller J, Kuvelkar R, Wen X, Cifelli S, Kreamer A, Liaw A, McLaren DG, Fischer C Bioorg Med Chem Lett. 2023 Feb 21;84:129193. doi: 10.1016/j.bmcl.2023.129193. PMID:36822300[3] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. References
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