Synthetic Flavonoid BrCl-Flav-An Alternative Solution to Combat ESKAPE Pathogens

Area of Science:

• Medicinal Chemistry
• Microbiology
• Drug Discovery

Background:

• ESKAPE pathogens pose a significant global health threat due to antimicrobial resistance.
• Development of novel antimicrobial agents is a critical medical priority.
• Synthetic flavonoids are promising candidates for new antimicrobial drug development.

Purpose of the Study:

• To evaluate the in vitro antibacterial activity of BrCl-flav, a new synthetic tricyclic flavonoid.
• To investigate the mechanism of action and synergistic potential of BrCl-flav.
• To assess the potential of BrCl-flav as a therapeutic agent against ESKAPE pathogens.

Main Methods:

• Minimum Inhibitory/Bactericidal Concentration (MIC/MBC) assays.
• Time-kill assays and biofilm formation assays.
• Fluorescence microscopy, scanning electron microscopy, and checkerboard assays.

Main Results:

• BrCl-flav demonstrated significant inhibitory activity against clinical ESKAPE pathogen isolates (MICs 0.24–125 µg/mL).
• Complete bacterial kill of *Enterococcus faecium* observed within 1 hour; significant biofilm disruption in *Acinetobacter baumannii*.
• Mechanism involves membrane integrity damage; synergistic activity with penicillin against MRSA.

Conclusions:

• BrCl-flav exhibits potent broad-spectrum antibacterial activity and biofilm disruption capabilities.
• The compound's mechanism of action involves damaging bacterial membrane integrity.
• BrCl-flav shows potential for developing new drugs against challenging ESKAPE pathogens.