Biomineralized porous composite scaffolds prepared by chemical synthesis for bone tissue regeneration

M. G. Raucci, V. D'Antò, V. Guarino, E. Sardella, S. Zeppetelli, P. Favia, L. Ambrosio

Research output: Contribution to journalArticlepeer-review

Abstract

Scaffold design is a key factor in the clinical success of bone tissue engineering grafts. To date, no existing single biomaterial used in bone repair and regeneration fulfils all the requirements for an ideal bone graft. In this study hydroxyapatite/polycaprolactone (HA/PCL) composite scaffolds were prepared by a wet chemical method at room temperature. The physico-chemical properties of the composite materials were characterized by X-ray diffraction, Fourier transform infrared spectroscopy and X-ray photoelectron spectroscopy, while scaffold morphology was investigated by scanning electron microscopy (SEM) with energy-dispersive spectroscopy to validate the process used for synthesis. Finally, the response of bone marrow-derived human mesenchymal stem cells (hMSCs) in terms of cell proliferation and differentiation to the osteoblastic phenotype was evaluated using the Alamar blue assay, SEM and alkaline phosphatase activity. Microstructural analysis indicated that the HA particles were distributed homogeneously within the PCL matrix. The biological results revealed that the HA/PCL composite scaffolds are suitable for the proliferation and differentiation of MSCs in vitro, supporting osteogenesis after 15 days. All the results indicate that these scaffolds meet the requirements of materials for bone tissue engineering and could be used for many clinical applications in orthopaedic and maxillofacial surgery.

Original languageEnglish
Pages (from-to)4090-4099
Number of pages10
JournalActa Biomaterialia
Volume6
Issue number10
DOIs
Publication statusPublished - Oct 2010

Keywords

  • Composite material
  • Human mesenchymal stem cell
  • Hydroxyapatite
  • Scaffold
  • Tissue engineering

ASJC Scopus subject areas

  • Biomaterials
  • Biomedical Engineering
  • Biotechnology
  • Biochemistry
  • Molecular Biology

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