Remineralized bone matrix as a scaffold for bone tissue engineering

Matthew A. Soicher, Blaine A. Christiansen, Susan M. Stover, J. Kent Leach, Clare E. Yellowley, Leigh G. Griffiths, David P. Fyhrie

Research output: Contribution to journalArticle

7 Scopus citations

Abstract

There is a need for improved biomaterials for use in treating non-healing bone defects. A number of natural and synthetic biomaterials have been used for the regeneration of bone tissue with mixed results. One approach is to modify native tissue via decellularization or other treatment for use as natural scaffolding for tissue repair. In this study, our goal was to improve on our previously published alternating solution immersion (ASI) method to fabricate a robust, biocompatible, and mechanically competent biomaterial from natural demineralized bone matrix (DBM). The improved method includes an antigen removal (AR) treatment step which improves mineralization and stiffness while removing unwanted proteins. The chemistry of the mineral in the remineralized bone matrix (RBM) was consistent with dicalcium phosphate dihydrate (brushite), a material used clinically in bone healing applications. Mass spectrometry identified proteins removed from the matrix with AR treatment to include a-2 HS-glycoprotein and osteopontin, noncollagenous proteins (NCPs) and known inhibitors of biomineralization. Additionally, the RBM supported the survival, proliferation, and differentiation of human mesenchymal stromal cells (MSCs) in vitro as well or better than other widely used biomaterials including DBM and PLG scaffolds. DNA content increased more than 10-fold on RBM compared to DBM and PLG; likewise, osteogenic gene expression was significantly increased after 1 and 2 weeks. We demonstrated that ASI remineralization has the capacity to fabricate mechanically stiff and biocompatible RBM, a suitable biomaterial for cell culture applications.

Original languageEnglish (US)
Pages (from-to)4480-4490
Number of pages11
JournalJournal of Biomedical Materials Research - Part A
Volume102
Issue number12
DOIs
StatePublished - Dec 1 2014

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Keywords

  • Bone graft
  • Brushite
  • Collagen
  • MSCs
  • Matrix
  • Mineralization

ASJC Scopus subject areas

  • Ceramics and Composites
  • Biomaterials
  • Biomedical Engineering
  • Metals and Alloys

Cite this

Soicher, M. A., Christiansen, B. A., Stover, S. M., Leach, J. K., Yellowley, C. E., Griffiths, L. G., & Fyhrie, D. P. (2014). Remineralized bone matrix as a scaffold for bone tissue engineering. Journal of Biomedical Materials Research - Part A, 102(12), 4480-4490. https://doi.org/10.1002/jbm.a.35118