6s1x

Publication Abstract from PubMed

Prostate-specific membrane antigen (PSMA) is an excellent biomarker for the early diagnosis of prostate cancer progression and metastasis. The most promising PSMA-targeted agents in the clinical phase are based on the Lys-urea-Glu motif, in which Lys and Glu are alpha-(l)-amino acids. In this study, we aimed to determine the effect of beta- and gamma-amino acids in the S1 pocket on the binding affinity for PSMA. We synthesized and evaluated the beta- and gamma-amino acid analogues with (S)- or (R)-configuration with keeping alpha-(l)-Glu as the S1'-binding pharmacophore. The structure-activity relationship studies identified that compound 13c, a beta-amino acid analogue with (R)-configuration, exhibited the most potent PSMA inhibitory activity with an IC50 value of 3.97 nM. The X-ray crystal structure of PSMA in complex with 13c provided a mechanistic basis for the stereochemical preference of PSMA, which can guide the development of future PSMA inhibitors.

Novel beta- and gamma-Amino Acid-Derived Inhibitors of Prostate-Specific Membrane Antigen.,Kim K, Kwon H, Barinka C, Motlova L, Nam S, Choi D, Ha H, Nam H, Son SH, Minn I, Pomper MG, Yang X, Kutil Z, Byun Y J Med Chem. 2020 Mar 26;63(6):3261-3273. doi: 10.1021/acs.jmedchem.9b02022. Epub , 2020 Mar 9. PMID:32097010^[1]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.