Surface channel patterned and endothelialized poly(glycerol sebacate) based elastomers

Area of Science:

• Biomaterials Science
• Tissue Engineering
• Cell Biology

Background:

• Vascularization is crucial for nutrient and gas transport in tissue equivalents.
• Endothelial cell culture on biomaterials is vital for developing functional tissue constructs.
• Existing cell-based methods require optimization for effective vascularization.

Purpose of the Study:

• To synthesize and characterize poly (glycerol sebacate) (PGS) elastomers with varying crosslinking ratios.
• To pattern PGS surfaces with microchannels using laser ablation for controlled cell seeding.
• To evaluate human umbilical vein endothelial cells (HUVECs) responses on PGS for optimal culture parameters and potential applications in vascularization.

Main Methods:

• Synthesis of poly (glycerol sebacate) (PGS) elastomers with diverse crosslinking densities.
• Surface modification of PGS using laser ablation to create microchannel patterns.
• Mechanical, chemical, and biological characterization of PGS materials.
• Seeding and culturing of human umbilical vein endothelial cells (HUVECs) within PGS channels under varied conditions.
• Evaluation of endothelial cell proliferation, organization, and response to PGS constructs.

Main Results:

• PGS elastomers with tunable properties were successfully synthesized.
• Laser ablation effectively patterned PGS surfaces, creating defined channels for cell culture.
• HUVECs exhibited significant proliferation and organized growth within the PGS channels.
• Optimal culture parameters for HUVECs on PGS were established, demonstrating good biocompatibility.

Conclusions:

• Patterned PGS elastomers serve as a promising biomaterial platform for endothelial cell culture.
• The developed laser ablation technique allows for versatile construct geometries for cell studies.
• These PGS-based platforms can be utilized for evaluating drug effects on endothelial cells and for vascularizing tissue-engineered constructs.