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PCL/Si-Doped Multi-Phase Calcium Phosphate Scaffolds Derived from Cuttlefish Bone.

Antonia Ressler1, Leonard Bauer1, Teodora Prebeg1

  • 1Faculty of Chemical Engineering and Technology, University of Zagreb, Marulićev trg 19, 10000 Zagreb, Croatia.

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Summary

This study developed novel silicon-doped composite scaffolds from cuttlefish bone for bone regeneration. The biomaterials show promising biocompatibility and enhanced protein adsorption for tissue engineering applications.

Keywords:
biogenic sourcebiomimeticbone scaffoldcalcium phosphatecalcium silicatesilicon

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Area of Science:

  • Biomaterials Science
  • Tissue Engineering
  • Biomineralization

Background:

  • Biomaterials are crucial as temporary scaffolds for bone tissue regeneration.
  • Developing cost-effective and efficient biomaterials is essential for clinical translation.

Purpose of the Study:

  • To synthesize silicon-doped, multi-phase composite scaffolds using cuttlefish bone and poly(ε-caprolactone) (PCL).
  • To investigate the impact of silicon doping and PCL coating on scaffold properties for bone regeneration.

Main Methods:

  • Hydrothermal synthesis of cuttlefish bone scaffolds, followed by silicon impregnation and heat treatment.
  • Coating with poly(ε-caprolactone) (PCL) and characterization of microstructure, mechanical, and biological properties.
  • In vitro assessment of human mesenchymal stem cells (hMSCs) using MTT assay for cytocompatibility.

Main Results:

  • Obtained multi-phase scaffolds composed of calcium phosphate and calcium silicate phases with preserved porosity (~78%).
  • Confirmed homogeneous silicon distribution, enhanced protein adsorption, and compressive strength of ~1.4 MPa suitable for non-load-bearing applications.
  • Demonstrated non-cytotoxicity of the composite scaffolds through MTT assay with hMSCs.

Conclusions:

  • Silicon-doped, PCL-coated cuttlefish bone scaffolds are biocompatible and suitable for bone tissue engineering.
  • The developed biomaterials offer a promising, cost-effective approach for regenerative medicine applications.