Synthesis and evaluation of andrographolide derivatives as potent anti-osteoporosis agents in vitro and in vivo
作者:Songxuan Zhang、Yuting Zhang、Yuying Fang、Hao Chen、Mengjiao Hao、Qingyun Tan、Chen Hu、Huihao Zhou、Jun Xu、Qiong Gu
DOI:10.1016/j.ejmech.2021.113185
日期:2021.3
In this work, we found that 14-deoxy-11,12-didehydroandrographolide (2), a derivative of andrographolide (AP, 1), had greatly reduced cytotoxicity compared with AP and exhibited moderate anti-osteoclastogenesis activity. Thirty compounds were synthesized by introducing anti-osteoporosis chemotypes at C-19 of 2. Six of them exhibited stronger inhibition of osteoclastogenesis than AP. Of note, compound
在这项工作中,我们发现穿心莲内酯的衍生物(AP,1)14-脱氧-11,12-二氢加氢穿心莲内酯(2)与AP相比具有大大降低的细胞毒性,并表现出中等的抗破骨细胞生成活性。通过在2的C-19处引入抗骨质疏松症的化学型,合成了30种化合物。他们中的六个表现出比AP更强的破骨细胞抑制作用。值得注意的是,化合物12g表现出最强的活性,IC 50值为0.35μM。通过12g处理,破骨细胞特异性基因(例如TRAcP,CTSK,NFATc1和MMP-9)的表达水平也降低了。此外,蛋白质印迹和免疫荧光分析表明该化合物12g通过下调RANKL诱导的NF-κB信号通路抑制破骨细胞分化。在卵巢切除(OVX)雌性小鼠模型中,化合物12g显着改善了骨质流失。因此,化合物12g显示出有希望的体内功效和低毒性,表明其治疗骨质疏松症的治疗潜力。