Control of drug accessibility on functional polyelectrolyte multilayer films

Area of Science:

• Biomaterials Science
• Nanotechnology
• Drug Delivery

Background:

• Developing effective drug delivery systems is crucial for cancer therapy.
• Controlling drug release and cell interaction is key for targeted treatment.

Purpose of the Study:

• To design a polylysine/hyaluronic acid multilayer coating as a reservoir for paclitaxel (Taxol).
• To investigate the controlled release and antiproliferative efficacy of paclitaxel from the coating.
• To assess the biocompatibility and cell adhesion properties of the coating for cancer cells.

Main Methods:

• Utilized the layer-by-layer assembly method to create polylysine/hyaluronic acid multilayers.
• Incorporated paclitaxel (Taxol) into the multilayer structure without chemical modification.
• Developed a synthetic polyelectrolyte capping layer to control drug accessibility and promote cell adhesion.
• Evaluated cellular viability of human colonic adenocarcinoma cells (HT29) seeded on the films.

Main Results:

• Achieved a simple and effective method for creating a drug-loaded polyelectrolyte multilayer reservoir.
• Demonstrated fine-tuning of paclitaxel dose and controlled drug accessibility.
• Confirmed paclitaxel's antiproliferative activity was maintained after embedding, reducing HT29 cell viability by approximately 80% within 96 hours.
• The capping layer facilitated HT29 cell adhesion.

Conclusions:

• The designed polylysine/hyaluronic acid multilayer system serves as an effective reservoir for paclitaxel.
• This strategy offers a versatile platform for controlled drug delivery and cancer cell treatment.
• The approach holds promise for application in various other drug/cell systems.