New Strategies to Kill Metabolically-Dormant Cells Directly Bypassing the Need for Active Cellular Processes

Area of Science:

• Microbiology
• Infectious Diseases
• Drug Discovery

Background:

• Persister cells are dormant bacteria contributing to antibiotic treatment failure and recurrent infections.
• These cells can promote antimicrobial resistance and the selection of resistant mutants.
• Multidrug-resistant infections necessitate novel strategies targeting dormant bacterial populations.

Purpose of the Study:

• To review antimicrobial agents effective against persister cells.
• To discuss strategies targeting bacterial cell envelope structures, independent of metabolic state.
• To explore anti-biofilm approaches for combating persistent infections.

Main Methods:

• Review of literature on agents targeting cell envelope structures (e.g., cell wall hydrolases, polysaccharide depolymerases, antimicrobial peptides).
• Discussion of strategies that inhibit or degrade biofilm matrix.
• Analysis of the potential of combining novel agents with standard antibiotics.

Main Results:

• Agents targeting cell envelope structures show efficacy against persister cells.
• Inhibitors of biofilm formation or matrix degraders are crucial for anti-persister strategies.
• Combinatorial approaches with standard antibiotics enhance efficacy.

Conclusions:

• Novel antimicrobial agents targeting bacterial cell envelopes and biofilms are essential for combating persister cells.
• Combining these agents with conventional antibiotics presents a promising therapeutic strategy.
• Addressing persister cells is critical for managing multidrug-resistant infections.