Hydrogel containing nanoparticle-stabilized liposomes for topical antimicrobial delivery

Area of Science:

• Biomaterials Science
• Drug Delivery Systems
• Nanotechnology

Background:

• Nanoparticle-stabilized liposomes offer a promising strategy for targeted bacterial infection treatment.
• Current delivery methods require optimization for sustained release and stability.

Purpose of the Study:

• To develop a hydrogel formulation for nanoparticle-stabilized liposomes for enhanced topical drug delivery.
• To evaluate the efficacy and safety of this novel formulation against bacterial infections.

Main Methods:

• Integration of nanoparticle-stabilized liposomes within a hydrogel matrix.
• Assessment of liposome release kinetics and structural integrity within the hydrogel.
• In vitro testing against Staphylococcus aureus, evaluating pH-dependent fusion.
• In vivo topical application on mouse skin to assess toxicity.

Main Results:

• The hydrogel formulation successfully preserved liposome integrity and enabled tunable release.
• Effective release of liposomes to bacterial cultures and pH-dependent fusion with bacterial membranes were observed.
• No observable skin toxicity was detected after 7-day topical application in mice.

Conclusions:

• Hydrogel-encapsulated nanoparticle-stabilized liposomes represent a safe and effective platform for topical antimicrobial drug delivery.
• This formulation holds significant potential for treating various microbial infections via topical application.