Targeting Quorum Sensing as a Next-Generation Approach to Bacterial Infections

The global rise of antibiotic resistance has prompted the search for innovative antimicrobial strategies that go beyond conventional bactericidal and bacteriostatic approaches. One promising avenue is anti-virulence therapy, which targets the mechanisms of bacterial pathogenesis rather than growth. Central to many bacterial infections is quorum sensing (QS), a communication system that regulates collective behaviours such as biofilm formation, toxin production, and immune evasion. By disrupting QS, known as quorum sensing inhibition (QSI), bacterial virulence can be significantly reduced without exerting selective pressure for resistance. This review aims the emerging role of quorum sensing in microbial pathogenesis and highlights the therapeutic potential of QS inhibitors (QSIs) in the context of anti-virulence therapy. We explore various types of QSIs, including natural products, and enzymatic inhibitors, and assess their efficacy in mitigating bacterial infections. Furthermore, we address the challenges in developing QS-based therapies, such as specificity, stability, and delivery, and their implications in clinical settings. As a novel, resistance-sparing approach, quorum sensing inhibition offers a new horizon in the fight against bacterial infections, paving the way for more sustainable and effective antimicrobial strategies