Development of Inhibitors of SAICAR Synthetase (PurC) from <i>Mycobacterium abscessus</i> Using a Fragment-Based Approach
作者:Sitthivut Charoensutthivarakul、Sherine E. Thomas、Amy Curran、Karen P. Brown、Juan M. Belardinelli、Andrew J. Whitehouse、Marta Acebrón-García-de-Eulate、Jaspar Sangan、Subramanian G. Gramani、Mary Jackson、Vitor Mendes、R. Andres Floto、Tom L. Blundell、Anthony G. Coyne、Chris Abell
DOI:10.1021/acsinfecdis.1c00432
日期:2022.2.11
synthetase (PurC) from Mab was identified as a promising target for novel antibiotics. An in-house fragment library screen and a high-throughput X-ray crystallographic screen of diverse fragment libraries were explored to provide crucial starting points for fragment elaboration. A series of compounds developed from fragment growing and merging strategies, guided by crystallographic information and careful
脓肿分枝杆菌 (Mab)已成为囊性纤维化患者的一大挑战。这种病原体引起的感染通常无法治疗,因为其固有的抗生素耐药性会导致肺功能障碍并最终导致死亡。因此,迫切需要针对Mab中的新靶点开发新药,以克服耐药性和随后的治疗失败。在这项研究中,来自Mab 的SAICAR 合成酶 (PurC)被确定为新型抗生素的有希望的靶标。探索了内部片段库筛选和不同片段库的高通量 X 射线晶体学筛选,为片段精细化提供关键的起点。通过片段生长和合并策略开发的一系列化合物,在晶体学信息和仔细的先导化合物优化的指导下,已经实现了与酶的有效纳摩尔结合亲和力。一些化合物还显示出对Mab和Mtb有希望的抑制作用。这项工作采用基于片段的设计,并首次展示了从Mab开发 PurC 抑制剂的潜力。