Highly adjustable biomaterial networks from three-armed biodegradable macromers

Area of Science:

• Biomaterials Science
• Polymer Chemistry
• Tissue Engineering

Background:

• Biocompatible materials with tunable properties are crucial for site-specific biomedical applications.
• Existing materials often lack the necessary adjustability and chemical modification options.

Purpose of the Study:

• To establish a platform of biodegradable macromers with adjustable properties for creating tailored tissue engineering scaffolds.
• To investigate the fabrication and characterization of macroporous scaffolds using these novel macromers.

Main Methods:

• Synthesized a platform of 15 three-armed biodegradable macromers with varying ethoxylation, oligoester lengths (lactide, ε-caprolactone), and molecular weights (900-3000 Da).
• Utilized a modified solid lipid templating technique to fabricate macroporous scaffolds.
• Characterized scaffold properties including mechanical strength, composition, microstructure, porosity (up to 88%), and cytocompatibility.

Main Results:

• Material properties, including hydrophilicity and mechanical characteristics, were successfully controlled by adjusting macromer chemistry.
• The fabrication technique allowed for significant control over scaffold porosity and microstructure.
• Demonstrated basic cytocompatibility through indirect and direct cell contact methods.

Conclusions:

• The developed macromer platform provides a versatile system for creating tissue engineering scaffolds with precisely controlled chemical and mechanical properties.
• The macroporous scaffolds fabricated using the solid lipid templating technique show promise for various biomedical applications.
• The platform leverages clinically established chemistries, offering a foundation for future clinical translation.