Targeting the S2 Subsite Enables the Structure-Based Discovery of Novel Highly Selective Factor XIa Inhibitors
作者:Ningning Yao、Zhiping Jia、Yongbin Tian、Shuzeng Hou、Xiaoxiao Yang、Jihong Han、Yajun Duan、Chenzhong Liao、Yi Kong、Zhouling Xie
DOI:10.1021/acs.jmedchem.1c02153
日期:2022.3.10
FXIa inhibition has been a promising strategy for treating thrombotic diseases. Up to date, many small-molecule FXIa inhibitors have been identified; however, most of them exhibit undesirable selectivity over the homologous plasma kallikrein (PKal). By employing structure-based drug design strategies, we identified many novel selective FXIa inhibitors that have extra interactions with the S2 subsite
FXIa抑制已成为治疗血栓性疾病的有前景的策略。迄今为止,已鉴定出许多小分子 FXIa 抑制剂。然而,它们中的大多数表现出对同源血浆激肽释放酶 (PKal) 的不良选择性。通过采用基于结构的药物设计策略,我们发现了许多与 FXIa 的 S2 亚位点具有额外相互作用的新型选择性 FXIa 抑制剂。其中,化合物35对 FXIa 表现出良好的抑制活性,对 PKal 甚至其他几种丝氨酸蛋白酶具有高选择性。此外,35对内在途径显示出显着的抗凝活性,而不影响外在途径。体内,35在不增加小鼠出血风险和明显毒性的情况下表现出显着的抗血栓形成活性,表明它可能是进一步研究的有希望的候选者。该研究首先证明了 FXIa 的 S2 亚位点的重要性,为设计用于临床的高选择性 FXIa 抑制剂铺平了道路。