Nanoparticle Applications in Antibacterial Strategies
Summary
Antibiotic resistance poses a growing threat to global health, driving the search for alternative antimicrobial approaches. Nanoparticles offer a versatile platform owing to their sub-micrometre dimensions, high surface-to-volume ratio and tunable surface chemistry. Metallic nanoparticles, particularly those composed of silver and gold, exert potent bactericidal effects through multiple mechanisms, including disruption of cell membranes, generation of reactive oxygen species and release of antimicrobial ions. Beyond intrinsic activity, nanoparticles can be functionalised with antibiotics, peptides or targeting ligands to enhance specificity, reduce off-target effects and overcome conventional resistance mechanisms. Their capacity to penetrate and disrupt biofilms, modulate the local microenvironment and deliver sustained, controlled release of active agents positions them as promising candidates for wound dressings, implant coatings and systemic therapies. Attention to biocompatibility, biodistribution and environmental impact remains critical for the translation of nanoparticle-based antibacterial strategies to clinical and industrial settings.
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Nanoparticle Applications in Antibacterial Strategies publication trend
The graph below shows the total number of articles in nanoparticle applications in antibacterial strategies across all publications each year (not limited to Nature Index journals).
Technical terms
Nanoparticle: A particle with at least one dimension between 1 and 100 nanometres, offering unique optical, chemical and mechanical properties.
Biofilm: A complex aggregation of microorganisms encased in a self-produced extracellular matrix adherent to surfaces, often exhibiting increased resistance to antimicrobials.
Functionalisation: The attachment of chemical groups, biomolecules or polymers to the surface of nanoparticles to confer targeting, stability or enhanced biological activity.
Minimum inhibitory concentration (MIC): The lowest concentration of an antimicrobial agent required to prevent visible growth of a microorganism under defined conditions.
Reactive oxygen species (ROS): Highly reactive molecules derived from oxygen that can induce oxidative damage to bacterial cell components, contributing to antimicrobial effects.
References
- Novel metal peroxide nanoboxes restrain Clostridioides difficile infection beyond the bactericidal and sporicidal activity. Bioengineering & Translational Medicine (2023).
- Metallic Nanosystems in the Development of Antimicrobial Strategies with High Antimicrobial Activity and High Biocompatibility. International Journal of Molecular Sciences (2023).
- A Comprehensive Review of Silver and Gold Nanoparticles as Effective Antibacterial Agents. Pharmaceuticals (2024).
- Recent Advances in the Development of Antibiotics-Coated Gold Nanoparticles to Combat Antimicrobial Resistance. Antibiotics (2024).
- Mechanistic Insights into the Antimicrobial Actions of Metallic Nanoparticles and Their Implications for Multidrug Resistance. International Journal of Molecular Sciences (2019).
- Interactions of Gold and Silver Nanoparticles with Bacterial Biofilms: Molecular Interactions behind Inhibition and Resistance. International Journal of Molecular Sciences (2020).
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