Engineering 3D degradable, pliable scaffolds toward adipose tissue regeneration; optimized printability, simulations...

Area of Science:

• Biomaterials Engineering
• Tissue Engineering
• Polymer Science

Background:

• Current 3D-printed scaffolds for adipose tissue regeneration often become stiff and brittle due to polymer degradation during printing.
• Optimizing scaffold properties is crucial for successful adipose tissue defect repair.

Purpose of the Study:

• To engineer soft, pliable, and degradable 3D-printed scaffolds for adipose tissue regeneration.
• To investigate the influence of printing parameters on scaffold mechanical properties.
• To evaluate the efficacy of polydopamine coating for enhancing cell response.

Main Methods:

• Utilized high molar mass poly(L-lactide-co-trimethylene carbonate) (PLATMC) for scaffold fabrication via direct extrusion 3D printing.
• Employed finite element analysis to understand polymer degradation and its effect on mechanical properties.
• Functionalized scaffolds with polydopamine and performed in vitro cell studies.

Main Results:

• Identified optimal printing parameters to minimize material degradation during fabrication.
• Demonstrated that polydopamine coating increased scaffold surface hydrophilicity.
• Observed enhanced stem cell proliferation and adipogenic differentiation on polydopamine-coated scaffolds.

Conclusions:

• Developed a method for creating mechanically stable, soft, and pliable 3D-printed PLATMC scaffolds.
• Polydopamine functionalization significantly improves the biocompatibility and regenerative potential of the scaffolds.
• These scaffolds represent a promising candidate for implantable, resorbable medical devices in adipose tissue regeneration.