A unique binding pocket induced by a noncanonical SAH mimic to develop potent and selective PRMT inhibitors

Autor: Youchao Deng, Xiaosheng Song, Iredia D. Iyamu, Aiping Dong, Jinrong Min, Rong Huang
Jazyk: angličtina
Rok vydání: 2023
Předmět:
Zdroj: Acta Pharmaceutica Sinica B, Vol 13, Iss 12, Pp 4893-4905 (2023)
Druh dokumentu: article
ISSN: 2211-3835
DOI: 10.1016/j.apsb.2023.07.022
Popis: Protein arginine methyltransferases (PRMTs) are attractive targets for developing therapeutic agents, but selective PRMT inhibitors targeting the cofactor SAM binding site are limited. Herein, we report the discovery of a noncanonical but less polar SAH surrogate YD1113 by replacing the benzyl guanidine of a pan-PRMT inhibitor with a benzyl urea, potently and selectively inhibiting PRMT3/4/5. Importantly, crystal structures reveal that the benzyl urea moiety of YD1113 induces a unique and novel hydrophobic binding pocket in PRMT3/4, providing a structural basis for the selectivity. In addition, YD1113 can be modified by introducing a substrate mimic to form a “T-shaped” bisubstrate analogue YD1290 to engage both the SAM and substrate binding pockets, exhibiting potent and selective inhibition to type I PRMTs (IC50
Databáze: Directory of Open Access Journals