γ-Cyclodextrin-phenylacetic acid mesh as a drug trap

Area of Science:

• Biomaterials Science
• Nanotechnology
• Drug Delivery Systems

Background:

• Developing advanced drug delivery systems is crucial for effective cancer therapy.
• Biodegradable materials offer advantages for sustained drug release and reduced toxicity.
• Bioinspired designs can lead to novel functional properties in biomedical devices.

Purpose of the Study:

• To develop a nanoporous biodegradable mesh inspired by spider webs for enhanced drug delivery.
• To create a drug trap meshlike structure using γ-cyclodextrin (γ-CD) conjugated with phenylacetic acid (PA), named γ-CDP.
• To evaluate the drug release profile and in vivo efficacy of the γ-CDP mesh for cancer treatment.

Main Methods:

• Electrospinning of γ-cyclodextrin (γ-CD) conjugated with phenylacetic acid (PA) to form γ-CDP.
• Characterization of the γ-CDP mesh for its microfibrous/microspherical morphology and porous structure.
• In vitro assessment of drug capture and release kinetics over 4 weeks.
• In vivo evaluation of γ-CDP implants delivering chemotherapeutic agents to xenografted tumors.

Main Results:

• The developed γ-CDP mesh exhibited a unique drug trap meshlike pore structure.
• Efficient drug capture and transport into deep nanocompartments or out of the mesh were achieved.
• The γ-CDP implants demonstrated sustained drug release for 4 weeks.
• Single administration of γ-CDP implants delivering chemotherapeutics resulted in nearly complete tumor regression in xenografted models.

Conclusions:

• The γ-CDP mesh represents a novel bioinspired drug delivery system with efficient drug trapping and controlled release capabilities.
• This drug trap biodegradable mesh shows significant potential for the development of advanced therapeutic implants.
• The low-density, meshlike structure of γ-CDP offers unique advantages for functional biomedical devices and cancer therapy.