Discovery of caffeic acid phenethyl ester derivatives as novel myeloid differentiation protein 2 inhibitors for treatment of acute lung injury
作者:Lingfeng Chen、Yiyi Jin、Hongjin Chen、Chuchu Sun、Weitao Fu、Lulu Zheng、Min Lu、Pengqin Chen、Gaozhi Chen、Yali Zhang、Zhiguo Liu、Yi Wang、Zengqiang Song、Guang Liang
DOI:10.1016/j.ejmech.2017.11.066
日期:2018.1
Myeloid differentiation protein 2 (MD2) is an essential molecule which recognizes lipopolysaccharide (LPS), leading to initiation of inflammation through the activation of Toll-like receptor 4 (TLR4) signaling. Caffeic acid phenethyl ester (CAPE) from propolis of honeybee hives could interfere interactions between LPS and the TLR4/MD2 complex, and thereby has promising anti-inflammatory properties
髓样分化蛋白2(MD2)是识别脂多糖(LPS)的必需分子,可通过激活Toll样受体4(TLR4)信号传导引发炎症。蜜蜂蜂巢蜂胶中的咖啡酸苯乙酯(CAPE)可能会干扰LPS与TLR4 / MD2复合物之间的相互作用,因此具有令人振奋的抗炎特性。在这项研究中,我们设计和合成了48种CAPE衍生物,并评估了它们在LPS激活的小鼠初级腹膜巨噬细胞(MPM)中的抗炎活性。发现活性最高的化合物10s以高亲和力与MD2结合,从而阻止了LPS / MD2 / TLR4复合物的形成。10s的结合模式揭示了与MD2的主要相互作用是通过两个关键的氢键和疏水相互作用建立的。此外,10s在体内对LPS引起的ALI(急性肺损伤)显示出显着的保护作用。综上所述,这项工作为开发抗炎药提供了新的先导结构和候选药物MD2抑制剂。