Covalent Fragment Screening and Optimization Identifies the Chloroacetohydrazide Scaffold as Inhibitors for Ubiquitin C-terminal Hydrolase L1
作者:Ryan D. Imhoff、Rishi Patel、Muhammad Hassan Safdar、Hannah B. L. Jones、Adan Pinto-Fernandez、Iolanda Vendrell、Hao Chen、Christine S. Muli、Aaron D. Krabill、Benedikt M. Kessler、Michael K. Wendt、Chittaranjan Das、Daniel P. Flaherty
DOI:10.1021/acs.jmedchem.3c01661
日期:2024.3.28
these aggressive cancers. Herein, we describe a covalent fragment screen that identified the chloroacetohydrazide scaffold as a covalent UCHL1 inhibitor. Subsequent optimization provided an improved fragment with single-digit micromolar potency against UCHL1 and selectivity over the closely related UCHL3. The molecule demonstrated efficacy in cellular assays of metastasis. Additionally, we report a ligand-bound
泛素-蛋白酶体系统的失调是包括神经退行性疾病和癌症在内的各种疾病状态的标志。泛素 C 末端水解酶 L1 (UCHL1) 是一种去泛素化酶,在正常生理条件下主要在中枢神经系统中表达,但被认为是多种癌症的癌基因,包括黑色素瘤、肺癌、乳腺癌和淋巴瘤。因此,UCHL1 抑制剂可以作为对抗这些侵袭性癌症的可行治疗策略。在此,我们描述了一种共价片段筛选,将氯乙酰肼支架鉴定为共价 UCHL1 抑制剂。随后的优化提供了一个改进的片段,对 UCHL1 具有个位数微摩尔效力,并且对密切相关的 UCHL3 具有选择性。该分子在细胞转移检测中显示出功效。此外,我们报告了与 UCHL1 复合的最有效分子的配体结合晶体结构,为未来优化提供了对结合模式的深入了解和信息。