A surface-modified biodegradable urethral scaffold seeded with urethral epithelial cells.

Area of Science:

• Biomaterials Science
• Regenerative Medicine
• Urology

Background:

• Cell adhesion and proliferation are critical for successful cell-based tissue engineering.
• Urethral defects and strictures present significant clinical challenges.
• Poly-L-lactic acid (PLLA) scaffolds offer potential for urethral repair.

Purpose of the Study:

• To evaluate the adhesion and growth of rabbit uroepithelium on a surface-modified PLLA scaffold.
• To assess the suitability of the scaffold for urethral tissue engineering.

Main Methods:

• Rabbit uroepithelium was cultured and confirmed for purity using immunocytochemistry.
• Cells were seeded onto a surface-modified, non-knitted filament PLLA scaffold.
• Cell morphology, viability, growth, and adhesion were analyzed using microscopy and staining techniques.

Main Results:

• Uroepithelial cells formed confluent monolayers with a cobblestone pattern within 3-5 days.
• The PLLA scaffold demonstrated excellent biocompatibility, supporting urothelial growth without compromising cell viability.
• Vigorous cell growth and scaffold mesh filling were observed within 3-7 days.

Conclusions:

• The surface-modified PLLA scaffold effectively supports uroepithelial cell growth and adhesion.
• This scaffold shows promise as a carrier for urethral tissue engineering applications.
• The findings suggest potential for repairing urethral defects and strictures.