present study resolves the initially perplexing effects of KY02111 on Wntsignaling and subsequently identifies squalene synthase (SQS) as a molecular target of KY02111 and its optimized version, KY-I. By disrupting the interaction of SQS with cardiac ER-membrane protein TMEM43, KY02111 impairs TGFβ signaling, but not Wntsignaling, and thereby recapitulates the clinical mutation of TMEM43 that causes
New salicylic acid derivatives, double inhibitors of glycolate oxidase and lactate dehydrogenase, as effective agents decreasing oxalate production
作者:Maria Dolores Moya-Garzon、Barbara Rodriguez-Rodriguez、Cristina Martin-Higueras、Francisco Franco-Montalban、Miguel X. Fernandes、Jose A. Gomez-Vidal、Angel L. Pey、Eduardo Salido、Monica Diaz-Gavilan
DOI:10.1016/j.ejmech.2022.114396
日期:2022.7
evaluation of double glycolate oxidase/lactatedehydrogenaseinhibitors containing a salicylic acid moiety is described. The target compounds are obtained in an easily scalable two-step synthetic procedure. These compounds showed low micromolar IC50 values against the two key enzymes in the metabolism of glyoxylate. Mechanistically they behave as noncompetitive inhibitors against both enzymes and this fact
描述了含有水杨酸部分的双乙醇酸氧化酶/乳酸脱氢酶抑制剂的合成和生物学评价。目标化合物是通过易于扩展的两步合成程序获得的。这些化合物对乙醛酸代谢中的两种关键酶显示出低微摩尔 IC 50值。从机制上讲,它们对这两种酶都表现为非竞争性抑制剂,这一事实得到了对接研究的支持。生物学评价还包括体外和体内在高草酸小鼠中进行测定。这些化合物对三种类型的原发性高草酸尿症具有活性。此外,已经研究并丢弃了可能导致不良反应的原因,例如环氧合酶抑制或肾毒性。总而言之,这使得这种具有药物样结构的化学型成为治疗原发性高草酸尿症的良好候选者。
Optimization of Activity-Based Probes for Proteomic Profiling of Histone Deacetylase Complexes
作者:Cleo M. Salisbury、Benjamin F. Cravatt
DOI:10.1021/ja074138u
日期:2008.2.1
Histone deacetylases (HDACs) are key enzymatic regulators of the epigenome and serve as promising targets for anticancer therapeutics. Recently, we developed a photoreactive "clickable" probe, SAHA-BPyne, to report on HDAC activity and complex formation in native biological systems. Here, we investigate the selectivity, sensitivity, and inhibitory properties of SAHA-BPyne and related potential activity-based probes for HDACs. While we identified several probes that are potent HDAC inhibitors and label HDAC complex components in native proteomic preparations, SAHA-BPyne was markedly superior for profiling HDAC activities in live cells. Interestingly, the enhanced performance of SAHA-BPyne as an in situ activity-based probe could not be solely ascribed to potency in HDAC binding, implying that other features of the molecule were key to efficient active site-directed labeling in living systems. Finally, we demonstrate the value of in situ profiling of HDACs by comparing the activity and expression of HDAC1 in cancer cells treated with the cytotoxic agent parthenolide. These results underscore the utility of activity-based protein profiling for studying HDAC function and may provide insight for the future development of click chemistry-based photoreactive probes for the in situ anaylsis of additional enzyme activities.