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Structure-Based Virtual Screening for the Discovery of Novel Inhibitors of New Delhi Metallo-β-lactamase-1
ACS Medicinal Chemistry Letters ( IF 3.5 ) Pub Date : 2017-11-30 00:00:00 , DOI: 10.1021/acsmedchemlett.7b00428
Francesca Spyrakis 1 , Giuseppe Celenza 2 , Francesca Marcoccia 2 , Matteo Santucci 1 , Simon Cross 3 , Pierangelo Bellio 2 , Laura Cendron 4 , Mariagrazia Perilli 2 , Donatella Tondi 1
Affiliation  

Bacterial resistance has become a worldwide concern after the emergence of metallo-β-lactamases (MBLs). They represent one of the major mechanisms of bacterial resistance against beta-lactam antibiotics. Among MBLs, New Delhi metallo-β-lactamase-1 NDM-1, the most prevalent type, is extremely efficient in inactivating nearly all-available antibiotics including last resort carbapenems. No inhibitors for NDM-1 are currently available in therapy, making the spread of NDM-1 producing bacterial strains a serious menace. With this perspective, we performed a structure-based in silico screening of a commercially available library using FLAPdock and identified several, non-β-lactam derivatives as promising candidates active against NDM-1. The binding affinities of the highest scoring hits were measured in vitro revealing, for some of them, low micromolar affinity toward NDM-1. For the best inhibitors, efficacy against resistant bacterial strains overexpressing NDM-1 was validated, confirming their favorable synergistic effect in combination with the carbapenem Meropenem.

中文翻译:

基于结构的虚拟筛选,用于发现新德里Metallo-β-内酰胺酶-1的新型抑制剂

金属β-内酰胺酶(MBLs)出现后,细菌的耐药性已成为全世界关注的问题。它们代表了细菌对β-内酰胺抗生素的耐药性的主要机制之一。在MBL中,最普遍的类型是新德里metallo-β-lactamase-1NDM-1,它在灭活几乎所有可用的抗生素(包括最后一个碳青霉烯类)方面非常有效。目前尚无NDM-1抑制剂可用于治疗,这使产生NDM-1的细菌菌株的扩散成为严重的威胁。从这个角度出发,我们使用FLAPdock对市售文库进行了基于结构的计算机模拟筛选,并鉴定了几种非β-内酰胺衍生物作为对NDM-1有活性的有希望的候选物。测量得分最高的命中的结合亲和力体外显示,对于其中一些人,其对NDM-1的微摩尔亲和力很低。对于最好的抑制剂,已验证了针对过表达NDM-1的耐药细菌菌株的功效,证实了它们与碳青霉烯美洛培南合用具有良好的协同作用。
更新日期:2017-11-30
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