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Three-Dimensional Collagen Matrix Scaffold Implantation as a Liver Regeneration Strategy
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Collagen/Heparin Bi-Affinity Multilayer Modified Collagen Scaffolds for Controlled bFGF Release to Improve
Wangping Hao1, Jie Han1,2, Yun Chu1
1Key Laboratory for Nano-Bio Interface Research, Division of Nanobiomedicine, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou, 215123, P.R. China.
Macromolecular Bioscience
|August 31, 2018
Summary
A novel collagen/heparin bi-affinity multilayer delivery system (CHBMDS) enables sustained release of basic fibroblast growth factor (bFGF) for over 35 days. This system significantly enhances angiogenesis, improving therapeutic potential for tissue repair.
Area of Science:
- Biomaterials Science
- Tissue Engineering
- Regenerative Medicine
Background:
- Basic fibroblast growth factor (bFGF) is crucial for wound healing and angiogenesis.
- Current delivery systems limit bFGF's clinical application due to poor viability.
- Effective delivery is needed to harness bFGF's therapeutic potential.
Purpose of the Study:
- To develop a collagen/heparin bi-affinity multilayer delivery system (CHBMDS) for sustained bFGF release.
- To evaluate the CHBMDS's efficacy in promoting angiogenesis.
- To enhance the therapeutic outcomes for injured tissues.
Main Methods:
- Fabrication of CHBMDS via alternate deposition of heparin, collagen, and CBD-bFGF.
- Utilizing specific and electrostatic interactions for layer assembly.
- Assessing CBD-bFGF release kinetics and in vivo angiogenesis in SD rats.
Main Results:
- CHBMDS demonstrated sustained localized release of CBD-bFGF for over 35 days.
- Significant enhancement in angiogenesis was observed, with higher density and larger diameter of new blood vessels (≈70 µm).
- The system proved effective in promoting vascularization in subcutaneous tissue.
Conclusions:
- CHBMDS provides a viable and effective strategy for long-term, controlled delivery of bFGF.
- The system shows promise for improving therapeutic efficacy in tissue engineering and regenerative medicine.
- This approach offers a versatile platform for enhancing bFGF-based therapies.
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