cellular processes. Most small‐molecule PARP inhibitors developed to date have been against PARP1, and suffer from poor selectivity. PARP14 has recently emerged as a potential therapeutic target, but its inhibitor development has trailed behind. Herein, we describe a small molecule microarray‐based strategy for high‐throughput synthesis, screening of >1000 potential bidentate inhibitors of PARPs, and the
聚(
ADP-
核糖)聚合酶(PARP)是多种细胞过程中的关键酶。迄今为止,大多数开发的小分子PARP
抑制剂都针对PARP1,并且选择性较差。PARP14最近已成为潜在的治疗靶标,但其
抑制剂的开发却落后了。本文中,我们描述了一种基于小分子微阵列的高通量合成策略,筛选了> 1000种潜在的PARPs双齿
抑制剂,并成功发现了一种有效的PARP14
抑制剂H10,其选择性是PARP1的> 20倍。PARP14 / H10复合物的共结晶指示为H10结合烟酰胺和
腺嘌呤亚位点。进一步的结构-活性关系研究确定了
腺嘌呤亚位点的重要结合元素。在肿瘤细胞中,H10能够
化学敲低内源性PARP14活性。