Development of novel dipeptide nitriles as inhibitors of rhodesain of Trypanosoma brucei rhodesiense
作者:Carla Di Chio、Santo Previti、Giorgio Amendola、Rahul Ravichandran、Annika Wagner、Sandro Cosconati、Ute A. Hellmich、Tanja Schirmeister、Maria Zappalà、Roberta Ettari
DOI:10.1016/j.ejmech.2022.114328
日期:2022.6
were demonstrated to be reversible rhodesain inhibitors at nanomolar level, with EC50 values against cultured T. b. brucei in the micromolar range. We also proved that our dipeptide nitriles directly bind to the active site of rhodesain acting as competitive inhibitors. Within the most interesting compounds, the dipeptide nitrile 2b showed the highest binding affinity towards rhodesain (Ki = 16 nM)
在本文中,我们开发了一系列新的二肽腈,被证明是纳摩尔水平的可逆罗地塞因抑制剂,其 EC 50值对培养的T. b。brucei在微摩尔范围内。我们还证明了我们的二肽腈直接与罗地赛因的活性位点结合,充当竞争性抑制剂。在最有趣的化合物中,二肽腈2b显示出对罗地塞因 ( K i = 16 nM)的最高结合亲和力 以及良好的抗寄生虫活性 (EC 50 = 14.1 μM)。此外,对于二肽腈3e,其显示出K i = 122 nM 对锥虫蛋白酶,我们获得了最高的抗寄生虫活性 (EC 50 = 8.8 μM)。因此,鉴于所获得的结果,这两种化合物肯定可以代表新的先导化合物,用于发现治疗人类非洲锥虫病的新药。