Acute lung injury (ALI) is an inflammatory condition and there are no effective treatments. A novel new compound----colchicine-myricetin hybrid (CMyrH) was herein designed and synthesized. To evaluate the activity of CMyrH in ALI, we used a bleomycin (BLM) induced BEAS-2B injury model in vitro and established a well-recognized rat model of BLM-induced lung injury in vivo. The results demonstrated that colchicine-myricetin hybrid protected BEAS-2B cells against BLM-induced cell injury in an increased dose manner, and reduced wet/dry weight ratio, histological scoring, and inflammation cytokines IL-1β, IL-6, IL-18, and TNF-α levels of lung tissue of the rats. Furthermore, we found colchicine-myricetin hybrid inhibited caspase-1, ASC, GSDMD, and NLRP-3 expression in vivo. Meanwhile, we used molecular docking to analyze the binding mode of colchicine-myricetin hybrid and human neutrophil elastase (HNE), it revealed that colchicine-myricetin hybrid showed strong binding affinity toward human neutrophil elastase when compared to its parent molecules. In conclusion, It is suggested that colchicine-myricetin hybrid antagonized acute lung injury by focusing on multi-targets via multi-mechanisms, and might be served as a potential therapeutic agent for acute lung injury.
急性肺损伤(ALI)是一种炎症,目前尚无有效的治疗方法。本文设计并合成了一种新型化合物----colchicine-myricetin hybrid (CMyrH)。为了评估 CMyrH 对 ALI 的活性,我们在体外使用了博莱霉素(BLM)诱导的 BEAS-2B 损伤模型,在体内建立了公认的 BLM 诱导的大鼠肺损伤模型。结果表明,秋水仙碱-三尖杉酯素混合物能以增加剂量的方式保护 BEAS-2B 细胞免受博莱霉素诱导的细胞损伤,并降低大鼠肺组织的干湿重量比、组织学评分和炎症细胞因子 IL-1β、IL-6、IL-18 和 TNF-α 的水平。此外,我们还发现秋水仙素-三叶草苷混合物能抑制体内 caspase-1、ASC、GSDMD 和 NLRP-3 的表达。同时,我们利用分子对接分析了秋水仙素-三尖杉酯素混合物与人中性粒细胞弹性蛋白酶(HNE)的结合模式,结果显示秋水仙素-三尖杉酯素混合物与其母体分子相比,对人中性粒细胞弹性蛋白酶具有很强的结合亲和力。综上所述,秋水仙素-myricetin 杂交物通过多机制多靶点拮抗急性肺损伤,可作为急性肺损伤的潜在治疗药物。