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Updated: Jun 12, 2026
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Evaluation of Biomaterials for Bladder Augmentation using Cystometric Analyses in Various Rodent Models
Published on: August 9, 2012
Urinary bladder smooth muscle regeneration utilizing bone marrow derived mesenchymal stem cell seeded elastomeric
Arun K Sharma1, Partha V Hota, Derek J Matoka
1Children's Memorial Hospital Chicago, Division of Pediatric Urology, 2300 Children's Plaza, Chicago, IL 60614, USA. arun-sharma@northwestern.edu
Biomaterials
|May 22, 2010
Summary
Human mesenchymal stem cells (MSCs) on poly(1,8-octanediol-co-citrate) elastomeric thin films (POCfs) show promise for bladder regeneration. This study demonstrates MSC-seeded POCfs support partial regeneration of bladder tissue in vivo.
Area of Science:
- Biomaterials Science
- Regenerative Medicine
- Urology
Background:
- Bladder regeneration research faces challenges due to suboptimal cell choices and scaffold designs.
- Poly(1,8-octanediol-co-citrate) elastomeric thin films (POCfs) offer potential as advanced biomaterials for tissue engineering.
Purpose of the Study:
- To evaluate the efficacy of human mesenchymal stem cells (MSCs) seeded on POCfs for partial bladder regeneration.
- To assess the biocompatibility and tissue integration of MSC-seeded POCfs in a rat model.
Main Methods:
- POCfs were fabricated and characterized for mechanical properties (Young's modulus: 138 kPa, elongation: 137%).
- POCfs were seeded with human MSCs and urothelial cells (UCs) or smooth muscle cells (SMCs) and UCs.
- Augmentation of partial cystectomized nude rats with seeded POCfs, followed by histological and immunofluorescence analysis at 4 and 10 weeks.
Main Results:
- MSC/UC-seeded POCfs promoted bladder tissue regeneration with appropriate architecture and muscle bundle formation.
- Human-derived smooth muscle contractile proteins were expressed and retained in the regenerated tissue.
- Quantitative analysis showed a 1.75x greater muscle/collagen ratio in MSC/UC samples compared to SMC/UC controls at 10 weeks.
Conclusions:
- MSC-seeded POCfs provide a suitable environment for partial bladder regeneration in vivo.
- The developed elastomeric scaffold supports the integration and differentiation of seeded cells, restoring functional tissue characteristics.
- This approach holds potential for future clinical applications in reconstructive urology.
