Repurposing of antitumor drug candidate Quisinostat lead to novel spirocyclic antimalarial agents
作者:Ruoxi Li、Dazheng Ling、Tongke Tang、Zhenghui Huang、Manjiong Wang、Fei Mao、Jin Zhu、Lubin Jiang、Jian Li、Xiaokang Li
DOI:10.1016/j.cclet.2020.12.023
日期:2021.5
clinical. Our previous research revealed that clinical phase Ⅱ antitumor drug Quisinostat was a promising antimalarial prototype by inhibiting the activity of Plasmodium falciparum (P. falciparum) histone deacetylase (PfHDAC). Herein, 30 novel spirocyclic linker derivatives were designed and synthesized based on Quisinostat as lead compound, and then their antimalarial activities and cytotoxicity were
临床上迫切需要具有抗药性寄生虫功效和良好安全性的抗疟化学疗法。我们以前的研究表明,通过抑制恶性疟原虫(P. falciparum)组蛋白脱乙酰基酶(Pf HDAC)的活性,临床Ⅱ期抗肿瘤药物Quisinostat是一种有前途的抗疟原药。本文以Quisinostat为先导化合物,设计合成了30种新型螺环接头衍生物,并对其抗疟活性和细胞毒性进行了系统评价。其中,化合物8和27可以有效消除野生型和多药耐药性恶性疟原虫寄生虫,并表现出减弱的细胞毒性和良好的代谢稳定性。蛋白质印迹分析表明,它们可以像Quisinostat一样抑制Pf HDAC活性。此外,8和27在啮齿动物疟疾模型中均显示出一定的抗疟效力,与Quisinostat相比,8的动物毒性显着改善。总体而言,8和27是结构上新颖的Pf HDAC抑制剂,为进一步的抗疟药研究提供了前瞻性的原型。