Novel Isoalantolactone-Based Derivatives as Potent NLRP3 Inflammasome Inhibitors: Design, Synthesis, and Biological Characterization
作者:Min Zhao、Neng Ye、Ling Liu、Rui-Jia Zhang、Na Li、Jing Peng、Xiao-Ying Cai、Xue-Qin Jiang、Kai-Yue Su、Xin-Lu Zhang、Qian-Ru Rao、Kong-Jun Liu、De-Xin Deng、Ai-Hua Peng、Ming-Hai Tang、Li-Juan Chen、Wen-Shuang Wu、Hao-Yu Ye
DOI:10.1021/acs.jmedchem.4c00357
日期:——
The NLRP3 inflammasome has been recognized as a promising therapeutic target in drug discovery for inflammatory diseases. Our initial research identified a natural sesquiterpene isoalantolactone (IAL) as the active scaffold targeting NLRP3 inflammasome. To improve its activity and metabolic stability, a total of 64 IAL derivatives were designed and synthesized. Among them, compound 49 emerged as the
NLRP3炎症小体已被认为是炎症性疾病药物发现中一个有前途的治疗靶点。我们的初步研究确定了天然倍半萜异花内酯 (IAL) 作为靶向 NLRP3 炎症小体的活性支架。为了提高其活性和代谢稳定性,总共设计并合成了64个IAL衍生物。其中,化合物49成为最佳先导化合物,对THP-1细胞中尼日利亚菌素诱导的IL-1β释放具有最强效的抑制作用,IC 50值为0.29 μM,比IAL强约27倍(IC 50 : 7.86 μM),并表现出更高的代谢稳定性。重要的是, 49显着改善了 DSS 诱导的体内溃疡性结肠炎。从机制上讲,我们证明49与NLRP3 NACHT结构域中的半胱氨酸279共价结合,从而抑制NLRP3炎症小体的组装和激活。这些结果为进一步推进基于该支架的更有效的 NLRP3 抑制剂的开发提供了令人信服的证据。