8HXE

Discovery of 2-Aminothiazole-4-carboxylic Acids as Broad-Spectrum Metallo-beta-lactamase Inhibitors by Mimicking Carbapenem Hydrolysate Binding.

(2023) J Med Chem 66: 13746-13767

• PubMed: 37791640 Search on PubMed
• DOI: https://doi.org/10.1021/acs.jmedchem.3c01189
• Primary Citation of Related Structures:  
  8HX5, 8HXE, 8HXI, 8HXN, 8HXO, 8HXP, 8HXU, 8HXV, 8HXW, 8HY1, 8HY2, 8HY6, 8HYD, 8JAO


• PubMed Abstract: 
  

  Metallo-β-lactamases (MBLs) are zinc-dependent enzymes capable of hydrolyzing all bicyclic β-lactam antibiotics, posing a great threat to public health. However, there are currently no clinically approved MBL inhibitors. Despite variations in their active sites, MBLs share a common catalytic mechanism with carbapenems, forming similar reaction species and hydrolysates. We here report the development of 2-aminothiazole-4-carboxylic acids (AtCs) as broad-spectrum MBL inhibitors by mimicking the anchor pharmacophore features of carbapenem hydrolysate binding. Several AtCs manifested potent activity against B1, B2, and B3 MBLs. Crystallographic analyses revealed a common binding mode of AtCs with B1, B2, and B3 MBLs, resembling binding observed in the MBL-carbapenem product complexes. AtCs restored Meropenem activity against MBL-producing isolates. In the murine sepsis model, AtCs exhibited favorable synergistic efficacy with Meropenem, along with acceptable pharmacokinetics and safety profiles. This work offers promising lead compounds and a structural basis for the development of potential drug candidates to combat MBL-mediated antimicrobial resistance.

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Organizational Affiliation: 

Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China.