Discovery of novel NF-кB inhibitor based on scaffold hopping: 1,4,5,6,7,8-hexahydropyrido[4,3-d]pyrimidine
作者:Yue Sun、Zhong-Fei Gao、Wei-Bin Yan、Bin-Rong Yao、Wen-Yu Xin、Chun-Hua Wang、Qing-Guo Meng、Gui-Ge Hou
DOI:10.1016/j.ejmech.2020.112366
日期:2020.7
hepatoma and chronic inflammation. Inhibition of NF-κB activation can alleviate inflammation, and promote hepatoma cell apoptosis. In this study, a series of fluoro-substituted 1,4,5,6,7,8-hexahydropyrido[4,3-d]pyrimidines (PPMs, 31-57) were synthesized from 3,5-bis(arylidene)-4-piperidones (BAPs, 4-30) based on scaffold hopping. We successfully discovered the most potent 43 substituted by electron-withdrawing
NF-κB是连接肝癌和慢性炎症的关键信号通路分子。抑制NF-κB的活化可以减轻炎症,并促进肝癌细胞的凋亡。在这项研究中,由3,5-双(亚芳基)-合成了一系列氟取代的1,4,5,6,7,8-六氢吡啶并[4,3-d]嘧啶(PPM,31-57)。基于支架跳跃的4-哌啶酮(BAP,4-30)我们成功地发现,最有效的被吸电子替代物(3-F和4-CF3)取代的43毒性较小,抗炎活性更高。初步的机理研究表明,在细胞和蛋白质水平上有43种剂量依赖性细胞凋亡,而通过抑制LPS诱导的p65,IκBα和Akt磷酸化水平以及间接抑制MAPK信号传导来抑制NF-κB活化,通过抑制TNF-α或LPS诱导的NF-κB的核易位。对接分析证实,模拟的43个蛋白可以合理地结合Bcl-2,p65和p38蛋白的活性位点。该化合物作为一种新型的NF-κB抑制剂,也具有抗炎和抗肝癌的作用,因此有待进一步发展,作为临床上用于治疗肝癌和炎症性疾病的潜在多功能剂。