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Shi H, Ye X, Zhang J, Wu T, Yu T, Zhou C, Ye J. A thermostability perspective on enhancing physicochemical and cytological characteristics of octacalcium phosphate by doping iron and strontium. Bioact Mater 2020; 6:1267-1282. [PMID: 33210024 PMCID: PMC7653209 DOI: 10.1016/j.bioactmat.2020.10.025] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2020] [Revised: 10/14/2020] [Accepted: 10/25/2020] [Indexed: 01/09/2023] Open
Abstract
Investigation of thermostability will lead the groundbreaking of unraveling the mechanism of influence of ion-doping on the properties of calcium phosphates. In this work, octacalcium phosphate (OCP), a metastable precursor of biological apatite, was used as a stability model for doping ions (Fe3+ and Sr2+) with different ionic charges and radii. After treated under hot air at different temperatures (110–200 °C), the phase, morphology, structure, physicochemical properties, protein affinity, ions release, and cytological responses of the ion-doped OCPs were investigated comparatively. The results showed that the collapse of OCP crystals gradually occurred, accompanying with the dehydration of hydrated layers and the disintegration of plate-like crystals as the temperature increased. The collapsed crystals still retained the typical properties of OCP and the potential of conversion into hydroxyapatite. Compared to the undoped OCP, Fe-OCP, and Sr-OCP had lower and higher thermostability respectively, leading to different material surface properties and ions release. The adjusted thermostability of Fe-OCP and Sr-OCP significantly enhanced the adsorption of proteins (BSA and LSZ) and the cytological behavior (adhesion, spreading, proliferation, and osteogenic differentiation) of bone marrow mesenchymal stem cells to a varying extent under the synergistic effects of corresponding surface characteristics and early active ions release. This work paves the way for understanding the modification mechanism of calcium phosphates utilizing ion doping strategy and developing bioactive OCP-based materials for tissue repair. OCP was used as a stability model for doping ions with different charges and radii. Collapse of OCP crystals occurred with structural dehydration after heat treatment. Fe and Sr doping altered the thermostability of OCP crystals in an opposite way. The thermostable difference affected the surface properties and ion release of OCP. Active surface and ion release of OCP synergistically mediated its biocompatibility.
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Affiliation(s)
- Haishan Shi
- School of Stomatology, Jinan University, Guangzhou, 510632, China.,National Engineering Research Center for Tissue Restoration and Reconstruction, South China University of Technology, Guangzhou, 510006, China.,School of Materials Science and Engineering, South China University of Technology, Guangzhou, 510640, China
| | - Xiaoling Ye
- National Engineering Research Center for Tissue Restoration and Reconstruction, South China University of Technology, Guangzhou, 510006, China.,School of Materials Science and Engineering, South China University of Technology, Guangzhou, 510640, China
| | - Jing Zhang
- National Engineering Research Center for Tissue Restoration and Reconstruction, South China University of Technology, Guangzhou, 510006, China.,School of Materials Science and Engineering, South China University of Technology, Guangzhou, 510640, China
| | - Tingting Wu
- National Engineering Research Center for Healthcare Devices, Guangdong Institute of Medical Instruments, Guangdong Academy of Sciences, Guangzhou, 510500, China
| | - Tao Yu
- College of Chemistry and Materials Science, Jinan University, Guangzhou, 510632, China
| | - Changren Zhou
- College of Chemistry and Materials Science, Jinan University, Guangzhou, 510632, China
| | - Jiandong Ye
- National Engineering Research Center for Tissue Restoration and Reconstruction, South China University of Technology, Guangzhou, 510006, China.,School of Materials Science and Engineering, South China University of Technology, Guangzhou, 510640, China
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Yang X, Xie B, Wang L, Qin Y, Henneman ZJ, Nancollas GH. Influence of magnesium ions and amino acids on the nucleation and growth of hydroxyapatite. CrystEngComm 2011. [DOI: 10.1039/c0ce00470g] [Citation(s) in RCA: 68] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Qiu SR, Orme CA. Dynamics of Biomineral Formation at the Near-Molecular Level. Chem Rev 2008; 108:4784-822. [DOI: 10.1021/cr800322u] [Citation(s) in RCA: 84] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- S. Roger Qiu
- Physical and Life Sciences Directorate, Lawrence Livermore National Laboratory, 7000 East Avenue, Mailstop L-367, Livermore, California 94550
| | - Christine A. Orme
- Physical and Life Sciences Directorate, Lawrence Livermore National Laboratory, 7000 East Avenue, Mailstop L-367, Livermore, California 94550
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Affiliation(s)
- Lijun Wang
- Department of Chemistry, University at Buffalo, The State University of New York, Amherst, New York 14260
| | - George H. Nancollas
- Department of Chemistry, University at Buffalo, The State University of New York, Amherst, New York 14260
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