Recombinant human bone morphogenetic protein 2 (rhBMP-2) immobilized on laser-fabricated 3D scaffolds enhance osteogenesis

Maria Chatzinikolaidou, Charalampos Pontikoglou, Konstantina Terzaki, Maria Kaliva, Athanasia Kalyva, Eleni Papadaki, Maria Vamvakaki, Maria Farsari

Research output: Contribution to journalArticlepeer-review

21 Citations (Scopus)

Abstract

The regeneration of bone via a tissue engineering approach involves components from the macroscopic to the nanoscopic level, including appropriate 3D scaffolds, cells and growth factors. In this study, hexagonal scaffolds of different diagonals were fabricated by Direct Laser Writing using a photopolymerizable hybrid material. The proliferation of bone marrow (BM) mesenchymal stem cells (MSCs) cultured on structures with various diagonals, 50, 100, 150 and 200 μm increased significantly after 10 days in culture, however without significant differences among them. Next, recombinant human bone morphogenetic protein 2 (rhBMP-2) was immobilized onto the hybrid material both via covalent binding and physical adsorption. Both immobilization types exhibited similar high releaseate bioactivity profiles and a sustained delivery of rhBMP-2. The collagen and calcium levels produced in the extracellular matrix (ECM) were significantly elevated for the samples functionalized with BMP-2 compared to those in the osteogenic medium. Furthermore, significant upregulation of gene expression in both types of BMP-2 immobilized scaffolds was observed for alkaline phosphatase (ALPL) and osteocalcin (BGLAP) at days 7, 14, and 21, for RUNX2 at day 21, and for osteonectin (SPARC) at days 7 and 14. The results suggest that the release of bioactive rhBMP-2 from the hybrid scaffolds enhance the control over the osteogenic differentiation during cell culture.

Original languageEnglish
Pages (from-to)233-242
Number of pages10
JournalColloids and Surfaces B: Biointerfaces
Volume149
DOIs
Publication statusPublished - 1 Jan 2017
Externally publishedYes

Keywords

  • Bone tissue engineering
  • Hybrid 3D scaffolds
  • Osteogenic differentiation
  • rhBMP-2
  • Two-photon polymerization

ASJC Scopus subject areas

  • Biotechnology
  • Surfaces and Interfaces
  • Physical and Theoretical Chemistry
  • Colloid and Surface Chemistry

Fingerprint Dive into the research topics of 'Recombinant human bone morphogenetic protein 2 (rhBMP-2) immobilized on laser-fabricated 3D scaffolds enhance osteogenesis'. Together they form a unique fingerprint.

Cite this