Nanoparticle-Mediated Drug Delivery Systems for Wound Healing Applications
Summary
Nanoparticles are engineered at the nanometre scale to encapsulate and transport therapeutic agents directly to wound sites, offering controlled release, targeted delivery and improved biocompatibility. These systems can be fabricated from polymers, lipids, metals or hybrid materials and are designed to overcome limitations of conventional dressings and systemic therapies. By tuning particle size, surface chemistry and mechanical properties, researchers can enhance penetration through tissue barriers, protect sensitive cargo and modulate local immune responses. Key benefits include sustained release of antimicrobial or regenerative factors, reduction of systemic side effects and promotion of crucial healing processes such as cell migration, collagen deposition and angiogenesis. Recent developments focus on multifunctional platforms that combine antimicrobial, anti-inflammatory and pro-angiogenic functionality, often integrated within hydrogels or scaffold matrices to maintain a moist healing environment and provide mechanical support. These advances have potential in managing acute and chronic wounds, diabetic ulcers and burn injuries by accelerating closure, reducing infection and restoring tissue integrity.
Research from Nature Portfolio
Recent studies have demonstrated the promise of hydrogel–nanoparticle composites and nanohybrid systems in accelerating tissue repair and combating infection. A curcumin-stabilised silver nanoparticle hydrogel derived from guar gum has been shown to promote human dermal fibroblast proliferation, migration and collagen synthesis in vitro, while in vivo rat models exhibited a more than 40% increase in wound closure rate and significant bacterial reduction compared to commercial gels. Histological analysis indicated enhanced transition from inflammation to proliferation, with increased angiogenesis and normalised gene expression of remodelling markers. Another approach utilises a chitosan-based hydrogel loaded with selenium nanoparticles and mupirocin, creating a synergistic nanohybrid that decreases the minimum inhibitory concentration of the antibiotic threefold and delivers enhanced antibacterial efficacy against resistant Staphylococcus aureus in a diabetic wound model. This system also accelerated angiogenesis, fibroblast infiltration and collagen formation, leading to faster wound contraction and improved tissue architecture relative to controls.
Nanoparticle-Mediated Drug Delivery Systems for Wound Healing Applications publication trend
The graph below shows the total number of articles in nanoparticle-mediated drug delivery systems for wound healing applications across all publications each year (not limited to Nature Index journals).
Technical terms
Nanoparticle: A particle with dimensions in the range of 1–100 nm, used to encapsulate and deliver therapeutic agents.
Hydrogel: A three-dimensional network of hydrophilic polymers capable of retaining large amounts of water, used as a wound matrix.
Liposome: A spherical vesicle composed of phospholipid bilayers, employed to encapsulate both hydrophilic and hydrophobic drugs.
Nanostructured lipid carrier (NLC): A lipid-based nanoparticle with solid and liquid lipid phases, designed for enhanced drug loading and controlled release.
Scaffold: A porous biomaterial framework that supports cell attachment, proliferation and tissue regeneration.
Angiogenesis: The physiological process by which new blood vessels form from existing vasculature, critical for delivering nutrients and oxygen during healing.
References
- Nano-drug delivery systems in wound treatment and skin regeneration. Journal of Nanobiotechnology (2019).
- Enhanced wound healing properties of guar gum/curcumin-stabilized silver nanoparticle hydrogels. Scientific Reports (2021).
- Synergistic Antibacterial Activity and Wound Healing Properties of Selenium-Chitosan-Mupirocin Nanohybrid System: An in Vivo Study on Rat Diabetic Staphylococcus aureus Wound Infection Model. Scientific Reports (2020).
- Accelerated infected wound healing by topical application of encapsulated Rosemary essential oil into nanostructured lipid carriers. Artificial Cells Nanomedicine and Biotechnology (2019).
- Chitosan/Glycosaminoglycan Scaffolds: The Role of Silver Nanoparticles to Control Microbial Infections in Wound Healing. Polymers (2019).
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