Ruthenium derivatives attenuate LPS-induced inflammatory responses and liver injury via suppressing NF-κB signaling and free radical production
作者:Thanasekaran Jayakumar、Hung-Chang Huang、Chih-Wei Hsia、Tsorng-Harn Fong、Themmila Khamrang、Marappan Velusamy、Manjunath Manubolu、Joen-Rong Sheu、Chih-Hsuan Hsia
DOI:10.1016/j.bioorg.2020.103639
日期:2020.3
However, the compounds TQ-1 and 2 had no effects in this study. TQ-4 also inhibited LPS-induced OH° production. This study reveals the protective effect of TQ-4 against LPS-induced acute liver injury, inflammation, and oxidative reaction by destructing JNK/NF-κB signaling pathways. The result of this study may infer that TQ-4 might be a promising ruthenium metal derivative and/or therapeutic agent for
钌金属配合物已被证明具有多种化学和生物活性。合成了一系列三种新型钌衍生物(TQ 1、2和4),以评估脂多糖(LPS)刺激的巨噬细胞和小鼠肝损伤的抗炎和保肝活性。还评估了这些衍生物的羟基自由基(OH°)清除活性。结果表明,在所测试的化合物中,TQ-4可通过减少丙氨酸转氨酶(ALT)和天冬氨酸转氨酶(AST)来有效减轻LPS诱导的肝脏组织结构异常变化。该化合物对LPS诱导的小鼠肝脏组织中的炎性细胞因子(TNF-α和IL-1β),炎性酶(iNOS),NF-κB信号通路的成分(p65)和JNK磷酸化具有显着抑制作用。体外结果显示,TQ-4在LPS诱导的RAW 264.7细胞中对NO产生和iNOS表达具有最佳抑制作用。机制方法表明,TQ-4抑制了RAW 264.7细胞中LPS诱导的JNK磷酸化,IκBα降解,NF-κBp65磷酸化及其核易位以及羟基自由基(OH°)的产生。但是,化合物TQ-1和2在此