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Related Experiment Video

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Evaluation of Biomaterials for Bladder Augmentation using Cystometric Analyses in Various Rodent Models

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Autologous Endothelial Progenitor Cells and Bioactive Factors Improve Bladder Regeneration.

Bin Yang¹, Guanjie Yang¹, Feng Zhao²

¹Department of Urology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China.

Tissue Engineering. Part C, Methods

|September 27, 2023

Summary

Combining biomaterials, cells, and growth factors significantly improved bladder tissue engineering. This approach enhances smooth muscle regeneration and vascularization, leading to better functional recovery in tissue-engineered bladders.

Keywords:

bladder acellular matrix bladder regeneration endothelial progenitor cell growth factors tissue engineering

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Last Updated: Jul 15, 2025

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Published on: February 14, 2017

Area of Science:

Regenerative Medicine
Biomaterials Science
Vascular Biology

Background:

Insufficient vascularization hinders bladder tissue engineering and smooth muscle regeneration.
Developing effective strategies for tissue-engineered bladders requires addressing complex regeneration processes.

Purpose of the Study:

To investigate if combining biomaterials, cells, and bioactive factors improves smooth muscle regeneration and vascularization in tissue-engineered bladders.
To evaluate the efficacy of a multi-pathway approach for bladder augmentation.

Main Methods:

Porcine bladder acellular matrix (BAM) was seeded with autologous bladder smooth muscle cells (BSMCs) and endothelial progenitor cells (EPCs).
Exogenous vascular endothelial growth factor (VEGF) and platelet-derived growth factor BB (PDGF-BB) were administered with Matrigel.
The cell-BAM complex was implanted for bladder augmentation in a rabbit model.

Main Results:

Experimental group showed significantly improved smooth muscle regeneration and vascularization compared to controls.
Enhanced functional recovery of the tissue-engineered bladder was observed in the experimental group.
Cell tracking confirmed direct involvement of seeded EPCs in neovascularization.

Conclusions:

Combining autologous EPCs, BSMCs, BAM, and bioactive factors (VEGF, PDGF-BB) is an effective strategy for tissue-engineered urinary bladders.
This multi-pathway approach successfully addresses vascularization challenges in bladder regeneration.
The findings suggest a promising method for improving outcomes in bladder tissue engineering.