Related Experiment Videos
Human embryoid body-derived stem cells in bladder regeneration using rodent model
Dominic Frimberger1, Nelly Morales, Michael Shamblott
1Division of Pediatric Urology, Brady Urological Institute, Johns Hopkins University School of Medicine, Baltimore, Maryland 21287, USA.
Urology
|April 19, 2005
Summary
Human embryonic germ (hEG) cell-derived cells on SIS regenerated rat bladders. This study shows potential for stem cell therapy in bladder reconstruction, avoiding graft rejection and complications.
Area of Science:
- Regenerative Medicine
- Biomaterials Science
- Stem Cell Biology
Background:
- Bladder reconstruction presents challenges in tissue regeneration and graft integration.
- Human embryonic germ (hEG) cell-derived cells offer potential for tissue engineering applications.
- Porcine small intestinal submucosa (SIS) serves as a promising scaffold for tissue regeneration.
Purpose of the Study:
- To assess the regenerative capacity of SDEC cells seeded on SIS for injured rat bladders.
- To evaluate the efficacy of hEG cell-derived cells in bladder defect repair.
- To investigate the integration and contribution of seeded cells to bladder tissue regeneration.
Main Methods:
- SDEC cells were seeded on SIS scaffolds for 8 days in vitro.
- Bladder grafts were implanted into partial cystectomy defects in athymic rats.
- Histopathological and fluorescence microscopy analyses were performed at 7, 14, and 28 days post-implantation.
Main Results:
- No evidence of graft rejection or reduced bladder capacity was observed.
- Cell-seeded SIS implants prevented calcareous deposits seen in plain SIS implants.
- Complete bladder regeneration was achieved by 28 days, with labeled stem cells integrated into the new tissue.
Conclusions:
- hEG cell-derived cells on SIS successfully regenerated bladder defects in a rat model.
- This approach demonstrates potential for treating bladder injuries and defects.
- Further studies are warranted to evaluate long-term function and cell differentiation.