Characterizing and optimizing poly-L-lactide-co-ε-caprolactone membranes for urothelial tissue engineering

Area of Science:

• Biomaterials Science
• Tissue Engineering
• Urology

Background:

• Synthetic biomaterials like polylactide (PLA) and polycaprolactone are explored for urothelial tissue engineering.
• Poly-l-lactide-co-ε-caprolactone (PLCL) shows promise, but surface optimization is needed for human urothelial cells (hUCs).

Purpose of the Study:

• To compare smooth (sPLCL), textured (tPLCL), and compression-moulded PLCL (cPLCL) membranes for hUC growth.
• To evaluate the impact of topographical texturing on cell response and mechanical properties.

Main Methods:

• Synthesized and characterized different PLCL-based membranes (sPLCL, tPLCL, cPLCL).
• Cultured hUCs on the membranes and assessed cell attachment, proliferation, viability, and phenotype.
• Evaluated mechanical properties, including elongation, under hydrolysis.

Main Results:

• Both sPLCL and tPLCL significantly outperformed cPLCL in supporting hUC growth.
• tPLCL offered no significant advantage over sPLCL for cell attachment or proliferation.
• Cells remained viable and maintained their phenotype on all tested membranes over 14 days.
• sPLCL and tPLCL demonstrated suitable mechanical properties for urothelial applications, with tPLCL showing higher elongation.

Conclusions:

• sPLCL and tPLCL are promising candidates for urothelial tissue engineering applications.
• Further investigation of sPLCL and tPLCL is warranted based on cell culture and mechanical data.
• Topographical texturing may not be essential for improved hUC growth on PLCL membranes.