Silsesquioxane polymer as a potential scaffold for laryngeal reconstruction

Area of Science:

• Biomaterials Science
• Tissue Engineering
• Regenerative Medicine

Background:

• Laryngeal damage from cancer, disease, or trauma can impair voice, breathing, and swallowing.
• Current laryngeal replacements face challenges in replicating native tissue functionality and biocompatibility.
• Need for advanced biomaterials to support laryngeal reconstruction and regeneration.

Purpose of the Study:

• To evaluate polyhedral oligomeric silsesquioxane-poly(carbonate urea) urethane (POSS-PCUU) as a scaffold for laryngeal tissue engineering.
• To characterize the physical and cellular interaction properties of POSS-PCUU scaffolds.

Main Methods:

• Fabrication of POSS-PCUU scaffolds using precipitation and porogen leaching.
• Characterization of scaffold topography, pore structure (nano- and micro-pores), and tensile properties.
• Assessment of primary fibroblast and epithelial cell attachment and proliferation on the scaffold surface.

Main Results:

• POSS-PCUU scaffolds exhibit a foam-like structure with distinct surface topographies and a highly porous internal architecture.
• The internal porosity influences the polymer's complex tensile behavior.
• The largely non-porous surface limits initial cell access, but fibroblasts and epithelial cells demonstrate attachment and proliferation.

Conclusions:

• POSS-PCUU shows potential as a biomaterial for laryngeal tissue engineering.
• Modifying the manufacturing protocol to enhance surface porosity could improve cellular integration.
• Optimized POSS-PCUU scaffolds may offer solutions for laryngeal reconstruction and regeneration challenges.