Polydioxanone-based bio-materials for tissue engineering and drug/gene delivery applications

Area of Science:

• Biomaterials Science
• Polymer Chemistry
• Regenerative Medicine

Background:

• Polydioxanone (PDX) has seen limited use since its 1981 commercialization.
• Limitations of existing polymers like PLGA and new fabrication techniques have spurred PDX research.
• PDX offers enhanced features for medical devices, tissue engineering, and drug delivery.

Purpose of the Study:

• To review the synthesis of PDX and its copolymers.
• To provide a comprehensive account of PDX applications in the biomedical field.
• To focus on PDX's role in tissue engineering and drug/gene delivery.

Main Methods:

• Review of synthesis methods for PDX and its copolymers (e.g., methyl dioxanone).
• Analysis of electrospinning techniques for PDX fabrication.
• Investigation of PDX formulations (nanoparticles, nanomicelles, nanofibers) for drug delivery.

Main Results:

• Electrospun PDX mats exhibit mechanical properties comparable to native vascular ECM components (collagen, elastin).
• PDX's shape memory property offers kink resistance in vascular conduits.
• Tailored PDX polymers and formulations enable advanced controlled drug and gene delivery.

Conclusions:

• PDX and its copolymers represent a promising class of poly(ester-ether)s for next-generation biomedical applications.
• PDX is suitable for designing tissue engineering scaffolds for regenerating arteries, nerves, and bone.
• PDX-based nanomaterials significantly advance controlled drug and gene delivery systems.