Repurposing mosloflavone/5,6,7-trimethoxyflavone-resveratrol hybrids: Discovery of novel p38-α MAPK inhibitors as potent interceptors of macrophage-dependent production of proinflammatory mediators
作者:Ahmed H.E. Hassan、Sung Yeun Yoo、Kun Won Lee、Yoon Mi Yoon、Hye Won Ryu、Youngdo Jeong、Ji-Sun Shin、Shin-Young Kang、Seo-Yeon Kim、Hwi-Ho Lee、Boyoung Y. Park、Kyung-Tae Lee、Yong Sup Lee
DOI:10.1016/j.ejmech.2019.07.030
日期:2019.10
Herein, we address repurposing hybrids of mosloflavone or 5,6,7-trimethoxyflavone with amide analogs of resveratrol from anticancer leads to novel potent anti-inflammatory chemical entities. To unveil the potent anti-inflammatory molecules, biological evaluations were initiated in LPS-induced RAW 264.7 macrophages at 1 mu M concentration. Promising compounds were further evaluated at various concentrations. Multiple proinflammatory mediators were assessed including NO, PGE(2), IL-6, TNF-alpha and IL-1 beta. Compound 5z inhibited the induced production of NO, PGE(2), IL-6, TNF-alpha and IL-1 beta at the low 1 mu M concentration by 44.76, 35.71, 53.48, 29.39 and 41.02%, respectively. Compound 5z elicited IC50 values as low as 2.11 and 0.98 mu M against NO and PGE(2) production respectively. Compounds 5q and 5g showed potent submicromolar IC50 values of 0.31 and 0.59 mu M respectively against PGE(2) production. Reverse docking of compound 5z suggested p38-alpha MAPK, which is a key signaling molecule within the pathways controlling the transcription of proinflammatory mediators, as the molecular target. Biochemical testing confirmed these compounds as p38-alpha MAPK inhibitors explaining its potent inhibition of proinflammatory mediators' production. Collectively, the results presented 5z as a promising compound for further development of anti-inflammatory agents for treatment of macrophages-and/or immune mediated inflammatory diseases. (C) 2019 Elsevier Masson SAS. All rights reserved.