Chromones and chromone derivatives and uses thereof
申请人:Yen Mao-Hsiung
公开号:US20060142211A1
公开(公告)日:2006-06-29
The present invention relates to chromones, novel chromone derivatives, and pharmaceutical formulations containing the same and methods of use thereof. Uses of the present invention include, but are not limited to, use for the prevention and treatment of septic shock, organ injury and other disorders. The compounds described herein can be salt forms and also water-soluble compounds.
DARC: Mapping Surface Topography by Ray-Casting for Effective Virtual Screening at Protein Interaction Sites
作者:Ragul Gowthaman、Sven A. Miller、Steven Rogers、Jittasak Khowsathit、Lan Lan、Nan Bai、David K. Johnson、Chunjing Liu、Liang Xu、Asokan Anbanandam、Jeffrey Aubé、Anuradha Roy、John Karanicolas
DOI:10.1021/acs.jmedchem.5b00150
日期:2016.5.12
Protein-protein interactions represent an exciting and challenging target class for therapeutic intervention using small molecules. Protein interaction sites are often devoid of the deep surface pockets presented by "traditional" drug targets, and crystal structures reveal that inhibitors typically engage these sites using very shallow binding modes. As a consequence, modern virtual screening tools developed to identify inhibitors of traditional drug targets do not perform as well when they are instead deployed at protein interaction sites. To address the need for novel inhibitors of important protein interactions, here we introduce an alternate docking strategy specifically designed for this regime. Our method, termed DARC (Docking Approach using Ray-Casting), matches the topography of a surface pocket "observed" from within the protein to the topography "observed" when viewing a potential ligand from the same vantage point. We applied DARC to carry out a virtual screen against the protein interaction site of human antiapoptotic protein Md-1 and found that four of the top-scoring 21 compounds showed clear inhibition in a biochemical assay. The K-i values for these compounds ranged from 1.2 to 21 mu M, and each had ligand efficiency comparable to promising small-molecule inhibitors of other protein protein interactions. These hit compounds do not resemble the natural (protein) binding partner of Mcl-1, nor do they resemble any known inhibitors of Md-1. Our results thus demonstrate the utility of DARC for identifying novel inhibitors of protein-protein interactions.
CHROMONES AND CHROMONE DERIVATIVES AND USES THEREOF