New polyimidazole ligands against subclass B1 metallo-β-lactamases: Kinetic, microbiological, docking analysis

Area of Science:

• Medicinal Chemistry
• Biochemistry
• Antimicrobial Resistance

Background:

• Beta-lactam antibiotics are crucial for bacterial infections but face resistance.
• Metallo-β-lactamases (MBLs) are a growing threat, necessitating new inhibitors.
• Targeting the zinc-ion network in MBLs is a key strategy for inhibition.

Purpose of the Study:

• To synthesize and evaluate novel polyimidazole ligands as inhibitors of MBLs.
• To assess the inhibitory activity of these ligands against VIM-1, NDM-1, and IMP-1.
• To gain insights into ligand-MBL interactions through molecular docking.

Main Methods:

• Synthesis of polyimidazole ligands.
• In vitro inhibition assays against three MBL subclasses (VIM-1, NDM-1, IMP-1).
• Molecular docking studies to analyze ligand-target interactions.

Main Results:

• Several polyimidazole ligands demonstrated inhibitory activity against MBLs.
• The study identified promising candidates for further development.
• Molecular docking provided structural insights into the inhibition mechanism.

Conclusions:

• Polyimidazole ligands are effective inhibitors of metallo-β-lactamases.
• These findings offer potential new therapeutic strategies against drug-resistant bacteria.
• Further research is warranted to optimize these inhibitors for clinical use.