Optimization and anti-inflammatory evaluation of methyl gallate derivatives as a myeloid differentiation protein 2 inhibitor
作者:Yinda Qiu、Zhongxiang Xiao、Yanyan Wang、Dingfang Zhang、Wenxin Zhang、Guangbao Wang、Wenbin Chen、Guang Liang、Xiaokun Li、Yali Zhang、Zhiguo Liu
DOI:10.1016/j.bmc.2019.115049
日期:2019.10
compound 4k with the potent anti-inflammatory activity among 39 methyl gallate derivatives (MGDs). MGD 4k exhibited a high binding affinity to MD2, which in turn prevented the formation of the LPS/MD2/TLR4 complex. In addition, MGD 4k significantly reversed the upregulation of LPS-induced inflammatory mediators such as tumor necrosis factor-α, interleukin-6, intracellular adhesion molecule-1, vascular
髓样分化蛋白2(MD2)是Toll样受体4(TLR4)的共同受体,负责识别脂多糖(LPS),并在包括急性肺损伤(ALI)在内的炎症性肺病中介导一系列TLR4依赖性炎症反应)。因此,靶向MD2可以提供针对这些肺部疾病的治疗策略。在这项研究中,我们在39个没食子酸甲酯衍生物(MGD)中鉴定了一种具有有效抗炎活性的新型化合物4k。MGD 4k对MD2具有很高的结合亲和力,从而阻止了LPS / MD2 / TLR4复合物的形成。此外,MGD 4k显著逆转LPS诱导的炎症介质的上调,例如肿瘤坏死因子α,白介素-6,细胞内粘附分子-1,血管细胞粘附分子-1和单核细胞趋化蛋白-1的体外和体内。从机理上讲,MGD 4k通过失活JNK,ERK和p38信号通路来发挥抗炎功能。综上所述,我们的研究通过抑制MD2,炎症反应和主要的炎症相关信号通路,将MGD 4k鉴定为ALI的新型潜在治疗剂。