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Synthesis of Hydroxyapatite-Gelatin Composite Hydrogel for Bone Tissue Application
José Luis Barrera Bernal1, Íñigo Gaytán Salvatella2, Bryan Iván Martín Del Campo3
1Biomaterials Research Laboratory, Department of Stomatology, Health Sciences Center, Autonomous University of Aguascalientes, Aguascalientes City 20100, Mexico.
Gels (Basel, Switzerland)
|August 28, 2025
Summary
This study developed a novel hydroxyapatite-loaded hydrogel for bone regeneration. The biomaterial supports osteoblast proliferation and differentiation, showing promise for repairing critical-size bone defects.
Area of Science:
- Biomaterials Science
- Regenerative Medicine
- Tissue Engineering
Background:
- Bone tissue engineering is crucial for regenerating critical-size bone defects.
- Developing suitable scaffolds is essential for successful bone regeneration.
Purpose of the Study:
- To synthesize and characterize a novel composite hydrogel for bone tissue engineering.
- To evaluate the potential of this hydrogel as a scaffold for bone regeneration.
Main Methods:
- Hydrogel synthesis using gelatin, polyethylene glycol derivatives, and genipin cross-linker.
- Incorporation of hydroxyapatite ceramic particles.
- Characterization via Fourier transform infrared spectroscopy and mechanical testing.
- Evaluation of cell viability and osteoblast differentiation using mesenchymal stem cells.
Main Results:
- Successful synthesis and cross-linking of the hydrogel confirmed by FTIR.
- Mechanical properties of the hydrogel were optimized to mimic mandibular trabecular bone.
- Scanning electron microscopy confirmed hydroxyapatite presence within the hydrogel matrix.
- Enhanced osteoblastic cell proliferation and differentiation were observed on hydroxyapatite-loaded scaffolds.
Conclusions:
- The developed composite hydrogel is a promising biomaterial for bone tissue engineering.
- Hydroxyapatite incorporation significantly improved biological performance.
- The scaffold demonstrates potential for application in bone defect regeneration.
