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Type: Journal article
Title: Fabrication of a novel triphasic and bioactive ceramic and evaluation of its in vitro and in vivo cytocompatibility and osteogenesis
Author: Roohani-Esfahani, S.
Wong, K.
Lu, Z.
Chen, Y.
Li, J.
Gronthos, S.
Menicanin, D.
Shi, J.
Dunstan, C.
Zreiqat, H.
Citation: Journal of Materials Chemistry B, 2014; 2(13):1866-1878
Publisher: Royal Society of Chemistry
Issue Date: 2014
ISSN: 2050-750X
Statement of
Seyed-Iman Roohani-Esfahani, Kai Yuen Wong, Zufu Lu, Yong Juan Chen, Jiao Jiao Li, Stan Gronthos, Danijela Menicanin, Jeffrey Shi, Colin Dunstana and Hala Zreiqat
Abstract: We report, for the first time, the synthesis of a novel triphasic and crystalline bioactive ceramic (MSM-10) with the ability to simultaneously release three types of bioactive ions (strontium (Sr), silicon (Si) and magnesium (Mg)) to the surrounding microenvironment. An MSM-10 powder with a nominal composition (wt%) of 54 Mg2SiO4, 36 Si3Sr5 and 10 MgO was prepared by the sol–gel method and fabricated as porous scaffolds using the foam replication method. The effects of the different amounts of the phases in the ceramics on the mechanical and physical properties of the scaffolds as well as their in vitro and in vivo behaviors were comprehensively investigated. Biphasic calcium phosphate (BCP, β-tricalcium phosphate (60 wt%)/hydroxyapatite (40 wt%)) scaffolds were used as the control material. The attachment, morphology, proliferation and differentiation of primary human osteoblasts (HOBs) were investigated after cell culturing on the various scaffolds. In vitro cytotoxicity (ISO/EN 10993-5) results not only indicated the biocompatibility of MSM-10, but also its positive effects on inducing the proliferation of HOBs. Our results showed significant enhancement in osteogenic gene expression levels (Runx2, osteocalcin, osteopontin and bone sialoprotein), when HOBs were cultured on MSM-10, compared to those for BCP and other generated ceramic scaffolds. For the in vivo studies, the different types of the materials were seeded with cultured human mesenchymal stem cells (hMSC) and then subcutaneously transplanted into the dorsal surface of eight-week-old immunocompromised (NOD/SCID) mice. MSM-10 demonstrated a significant amount of new bone formation compared to the other groups tested with no macroscopic signs of inflammation or toxicity in the tissue surrounding the implants. The novel MSM-10 ceramic presents promising potential for bone regeneration in orthopaedic and maxillofacial applications.
Description: First published online 10 Jan 2014
Rights: © Royal Society of Chemistry 2014
RMID: 0020136424
DOI: 10.1039/C3TB21504K
Appears in Collections:Pathology publications

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