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Research Article | Open Access

Forsterite-hydroxyapatite composite scaffolds with photothermal antibacterial activity for bone repair

Weiye LIUa,b,†, Rongtai ZUOc,†, Tanglong ZHUa,b, Min ZHUa( ), Shichang ZHAOc( ), Yufang ZHUb( )
School of Materials Science and Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China
State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China
Department of Orthopedics, Shanghai Jiao Tong University affiliated Sixth People’s Hospital, Shanghai Jiao Tong University, Shanghai 200233, China

† Weiye Liu and Rongtai Zuo contributed equally to this work.

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Abstract

Bone engineering scaffolds with antibacterial activity satisfy the repair of bacterial infected bone defects, which is an expected issue in clinical. In this work, 3D-printed polymer-derived forsterite scaffolds were proposed to be deposited with hydroxyapatite (HA) coating via a hydrothermal treatment, achieving the functions of photothermal-induced antibacterial ability and bioactivity. The results showed that polymer-derived forsterite scaffolds possessed the photothermal antibacterial ability to inhibit Staphylococcus aureus (S. aureus) and Escherichia coli (E. coli) in vitro, owing to the photothermal effect of free carbon embedded in the scaffolds. The morphology of HA coating on forsterite scaffolds could be controlled through changing the hydrothermal temperature and the pH value of the reaction solution during hydrothermal treatment. Furthermore, HA coating did not influence the mechanical strength and photothermal effect of the scaffolds, but facilitated the proliferation and osteogenic differentiation of rat bone mesenchymal stem cells (rBMSCs) on scaffolds. Hence, the HA-deposited forsterite scaffolds would be greatly promising for repairing bacterial infected bone defects.

Keywords

forsterite scaffoldshydroxyapatite (HA) coatingbone repairphotothermal effectantibacterial activity

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Journal of Advanced Ceramics
Volume 10 Issue 5,
October 2021
Pages 1095-1106
DOI: 10.1007/s40145-021-0494-x

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Cite this article:
LIU W, ZUO R, ZHU T, et al. Forsterite-hydroxyapatite composite scaffolds with photothermal antibacterial activity for bone repair. Journal of Advanced Ceramics, 2021, 10(5): 1095-1106. https://doi.org/10.1007/s40145-021-0494-x

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Received: 26 December 2020
Revised: 16 March 2021
Accepted: 05 May 2021
Published: 20 September 2021
© The Author(s) 2021

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