Monday, January 1, 2018

Design of the First-in-Class, Highly Potent Irreversible Inhibitor Targeting the Menin-MLL Protein-Protein Interaction

Design of the First-in-Class, Highly Potent Irreversible Inhibitor Targeting the Menin-MLL Protein-Protein Interaction

Angew. Chem. Int. Ed., 2018
DOI: 10.1002/anie.201711828

Shaomeng Wang, Shilin Xu, Angelo Aguilar, Tianfeng Xu, Ke Zheng, Liyue Huang, Jeanne Stuckey, Krishnapriya Chinnaswamy, Denzil Bernard, Ester Fernández-Salas, Liu Liu, Mi Wang, Donna McEachern, Sally Przybranowski, Caroline Foster

We report the structure-based design of M-525 as the first-in-class, highly potent, irreversible small-molecule inhibitor of the menin-MLL interaction. M-525 targets cellular menin protein at sub-nanomolar concentrations and achieves low nanomolar potencies in cell growth inhibition and in suppression of MLL-regulated gene expression in MLL leukemia cells. M-525 demonstrates high cellular specificity over non-MLL leukemia cells and is >30-times more potent than its corresponding reversible inhibitors. Mass spectroscopic analysis and co-crystal structure of M-525 in complex with menin firmly establish its mode of action. A single administration of M-525 effectively suppresses MLL-regulated gene expression in tumor tissue. An efficient procedure was developed to synthesize M-525. Our study demonstrates that irreversible inhibition of menin may represent a promising therapeutic strategy for MLL leukemia.

Oncogenic KRAS G12C: Kinetic and Redox Characterization of Covalent Inhibition

Minh V. Huynh, Derek Parsonage, Tom E. Forshaw, Venkat R. Chirasani, G. Aaron Hobbs, Hanzhi Wu, Jingyun Lee, Cristina M. Furdui, Leslie B. P...