Artificial Ligands of Streptavidin (ALiS): Discovery, Characterization, and Application for Reversible Control of Intracellular Protein Transport
摘要:
Artificial ligands of streptavidin (ALiS) with association constants of similar to 10(6) M-1 were discovered by high-throughput screening of our chemical library, and their binding characteristics, including X-ray crystal structure of the streptavidin complex, were determined. Unlike biotin and its derivatives, ALiS exhibits fast dissociation kinetics and excellent cell permeability. The streptavidin-ALiS system provides a novel, practical compound-dependent methodology for repeated reversible cycling of protein localization between intracellular organella.
The invention provides compounds that inhibit PIM kinases and Flt3 kinase, and compositions containing such compounds. These compounds and compositions are useful for treating proliferative disorders such as cancer, as well as other kinase-associated conditions including inflammation.
A substructure similarity search against the SPECS database and chemical synthesis methods were performed to obtain a series of pyrazolidine-3,5-dione derivatives. Through the enzyme-based assay against c-Met kinase, 4 compounds (1c, 1e, 1m and 1o) showed potential inhibitory activity, with IC50 values mostly less than 10 μM. Based on the structure–activity relationship (SAR) and binding mode analysis
Exploiting the Carboxylate-Binding Pocket of β-Lactamase Enzymes Using a Focused DNA-Encoded Chemical Library
作者:Suhyeorn Park、Jiayi Fan、Srinivas Chamakuri、Murugesan Palaniappan、Kiran Sharma、Xuan Qin、Jian Wang、Zhi Tan、Allison Judge、Liya Hu、Banumathi Sankaran、Feng Li、B. V. Venkataram Prasad、Martin M. Matzuk、Timothy Palzkill
DOI:10.1021/acs.jmedchem.3c01834
日期:2024.1.11
resistance to the important β-lactam class of antibiotics. The OXA-48 and NDM-1 β-lactamases cause resistance to the last-resort β-lactams, carbapenems, leading to a serious public health threat. Here, we utilized DNA-encoded chemical library (DECL) technology to discover novel β-lactamase inhibitors. We exploited the β-lactamase enzyme–substrate binding interactions and created a DECL targeting the carboxylate-binding
Heptosyltransferases such as WaaC represent promising and attractive targets for the discovery of new Gram-negative antibacterial drugs based on antivirulence mechanisms. We report herein our approach to the identification of the first micromolar inhibitors of WaaC and the preliminary SAR generated from this family of 2-aryl-5-methyl-4-(5-aryl-furan-2-yl-methylene)-2,4-dihydro-pyrazol-3-ones identified by virtual screening. (c) 2008 Elsevier Ltd. All rights reserved.
Furan-2-ylmethylene Thiazolidinediones as Novel, Potent, and Selective Inhibitors of Phosphoinositide 3-Kinase γ
作者:Vincent Pomel、Jasna Klicic、David Covini、Dennis D. Church、Jeffrey P. Shaw、Karen Roulin、Fabienne Burgat-Charvillon、Delphine Valognes、Montserrat Camps、Christian Chabert、Corinne Gillieron、Bernard Françon、Dominique Perrin、Didier Leroy、Denise Gretener、Anthony Nichols、Pierre Alain Vitte、Susanna Carboni、Christian Rommel、Matthias K. Schwarz、Thomas Rückle
DOI:10.1021/jm0601598
日期:2006.6.1
Class I phosphoinositide 3-kinases (PI3Ks), in particular PI3K gamma, have become attractive drug targets for inflammatory and autoimmune diseases. Here, we disclose a novel series of furan-2-ylmethylene thiazolidinediones as selective, ATP-competitive PI3K gamma inhibitors. Structure-based design and X-ray crystallography of complexes formed by inhibitors bound to PI3K gamma identified key pharmacophore features for potency and selectivity. An acidic NH group on the thiazolidinedione moiety and a hydroxy group on the furan-2-yl-phenyl part of the molecule play crucial roles in binding to PI3K and contribute to class IB PI3K selectivity. Compound 26 (AS-252424), a potent and selective small-molecule PI3K gamma inhibitor emerging from these efforts, was further profiled in three different cellular PI3K assays and shown to be selective for class IB PI3K-mediated cellular effects. Oral administration of 26 in a mouse model of acute peritonitis led to a significant reduction of leukocyte recruitment.