Discovery and Characterization of MAPK-activated Protein Kinase-2 Prevention of Activation Inhibitors
摘要:
Two structurally distinct series of novel, MAPK-activated kinase-2 prevention of activation inhibitors have been discovered by high throughput screening. Preliminary structureactivity relationship (SAR) studies revealed substructural features that influence the selective inhibition of the activation by p38 alpha of the downstream kinase MK2 in preference to an alternative substrate, MSK1. Enzyme kinetics, surface plasmon resonance (SPR), 2D protein NMR, and X-ray crystallography were used to determine the binding mode and the molecular mechanism of action. The compounds bind competitively to the ATP binding site of p38 alpha but unexpectedly with higher affinity in the p38 alpha-MK2 complex compared with p38 alpha alone. This observation is hypothesized to be the origin of the substrate selectivity. The two lead series identified are suitable for further investigation for their potential to treat chronic inflammatory diseases with improved tolerability over previously studied p38 alpha inhibitors.
Identification and structure-activity relationship studies of small molecule inhibitors of the human cathepsin D
作者:Sandeep Goyal、Ketul V. Patel、Yadav Nagare、Digambar B. Raykar、Santosh S. Raikar、Atul Dolas、Princy Khurana、Rajath Cyriac、Sharad Sarak、Mukesh Gangar、Anil K. Agarwal、Aditya Kulkarni
DOI:10.1016/j.bmc.2020.115879
日期:2021.1
CathepsinD, an aspartyl protease, is an attractive therapeutic target for various diseases, primarily cancer and osteoarthritis. However, despite several small molecule cathepsinDinhibitors being developed, that are highly potent, most of them show poor microsomal stability, which in turn limits their clinical translation. Herein, we describe the design, optimization and evaluation of a series of
组织蛋白酶 D 是一种天冬氨酰蛋白酶,是多种疾病(主要是癌症和骨关节炎)的有吸引力的治疗靶点。然而,尽管正在开发几种小分子组织蛋白酶 D 抑制剂,它们非常有效,但其中大多数表现出较差的微粒体稳定性,这反过来限制了它们的临床转化。在此,我们描述了一系列基于组织蛋白酶 D 的新型非肽酰基胍小分子抑制剂的设计、优化和评估。我们命中化合物1a(IC 50 = 29 nM)的优化导致了高效的单磺酰胺类似物4b(集成电路50 = 4 nM),但微粒体稳定性较差(HLM:177 和 MLM:177 μl/min/mg)。为了在保留效力的同时进一步提高微粒体稳定性,我们进行了广泛的构效关系筛选,从而确定了我们优化的先导24e (IC 50 = 45 nM),并提高了微粒体稳定性(HLM:59.1 和 MLM :86.8 微升/分钟/毫克)。我们的努力表明,24e可能是针对组织蛋白酶 D 起重要作用的疾
[EN] SUBSTITUTED 3-AMINO-4-METHYLBENZENESULFONAMIDES AS SMALL MOLECULE INHIBITORS OF UBIQUITIN-SPECIFIC PROTEASE 28<br/>[FR] 3-AMINO-4-MÉTHYLBENZÈNESULFONAMIDES SUBSTITUÉS EN TANT QU'INHIBITEURS À PETITES MOLÉCULES DE LA PROTÉASE 28 SPÉCIFIQUE À L'UBIQUITINE
申请人:DANA FARBER CANCER INST INC
公开号:WO2022035804A1
公开(公告)日:2022-02-17
The present disclosure relates to a compound of formula (I) or a pharmaceutically acceptable salt thereof and pharmaceutical composition comprising the compound of formula (I). The present composition also relates to methods treating a disease or disorder associated with ubiquitin-specific protease 28 (USP28), methods of treating cancer, and methods of inhibiting USP28.
Identification and validation of selective deubiquitinase inhibitors
作者:Anthony C. Varca、Dominick Casalena、Wai Cheung Chan、Bin Hu、Robert S. Magin、Rebekka M. Roberts、Xiaoxi Liu、He Zhu、Hyuk-Soo Seo、Sirano Dhe-Paganon、Jarrod A. Marto、Douglas Auld、Sara J. Buhrlage
DOI:10.1016/j.chembiol.2021.05.012
日期:2021.12
ubiquitin precursors. Despite growing interest in DUB biological function and potential as therapeutic targets, few selective small-molecule inhibitors and no approved drugs currently exist. To identify chemical scaffolds targeting specific DUBs and establish a broader framework for future inhibitor development across the gene family, we performed high-throughput screening of a chemically diverse small-molecule
An Angle on MK2 Inhibition—Optimization and Evaluation of Prevention of Activation Inhibitors
作者:Ulf Hedström、Monica Norberg、Emma Evertsson、Sarah R. Lever、Magnus Munck af Rosenschöld、Hans Lönn、Peter Bold、Helena Käck、Pia Berntsson、Johanna Vinblad、Jianming Liu、Anette Welinder、Johan Karlsson、Arjan Snijder、Katerina Pardali、Ulf Andersson、Andrew M. Davis、Mickael Mogemark
DOI:10.1002/cmdc.201900303
日期:2019.10.4
further evaluated by protein immunoblotting, which showed that the optimized PoA MK2 compounds, despite their biochemical selectivity against MSK1 phosphorylation, behaved similarly to p38 inhibitors in cellular signaling. This study highlights the importance of selective tool compounds in untangling complex signaling pathways, and although 9 and 18 were not differentiated from p38αinhibitors in a cellular