6,7-trans cephalosporin-based probes for detecting bacteria expressing a metallo-beta-lactamase
申请人:The Board of Trustees of the Leland Stanford Junior University
公开号:US10570150B2
公开(公告)日:2020-02-25
The present invention discloses a probe useful for the selective detection of metallo-beta-lactamases, in particular carbapenemases, thereby distinguishing those species of bacteria that are carbapenem-resistant from bacterial strains that are sensitive. Cephalospori based probes that have the 6,7 R,R configuration are susceptible to cleavage by beta-lactamases but cannot distinguish between cleavage by metallo-beta-lactamases and other beta-lactamases. By modifying a side group of the cephalosporin, selectivity can be introduced allowing the probes to distinguish between various types of metallo-beta-lactamases.
本发明公开了一种探针,可用于选择性检测金属-β-内酰胺酶,特别是碳青霉烯酶,从而区分耐碳青霉烯的细菌种类和敏感的细菌菌株。基于头孢菌素的探针具有 6,7 R,R 构型,易被β-内酰胺酶裂解,但不能区分金属β-内酰胺酶和其他β-内酰胺酶的裂解。通过修改头孢菌素的一个侧基,可以引入选择性,使探针能够区分各种类型的金属-β-内酰胺酶。