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Wang H, Zheng TX, Yang NY, Li Y, Sun H, Dong W, Feng LF, Deng JP, Qi MC. Osteogenic and long-term antibacterial properties of Sr/Ag-containing TiO 2 microporous coating in vitro and in vivo. J Mater Chem B 2023; 11:2972-2988. [PMID: 36919628 DOI: 10.1039/d2tb01658c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/16/2023]
Abstract
Bacterial infection and poor osseointegration are two critical issues that need to be solved for long-term use of titanium implants. As such, Sr/Ag-containing TiO2 microporous coatings were prepared on a Ti alloy surface in the current study via a single-step microarc oxidation technique. The coatings showed both good cytocompatibility in vitro and biosafety in vivo. Sr/Ag incorporation brought no significant change in the surface micromorphology and physicochemical properties, but endowed the coating with strong osteogenic activity and long-term antibacterial capability in vitro. Furthermore, the osteogenic and antibacterial capability of the coating was also confirmed in vivo. In a rat osseointegration model, new bone formation, implant-bone contact, removal torque and bone mineralization were all significantly increased in the M-Sr/Ag group when compared with those in group M, although they were slightly lower than those in group M-Sr. In a periimplantitis model, no rats suffered infection in the M-Sr/Ag group after 3 months of osseointegration and 5 weeks of bacterial inoculation period, when compared to 100% and 75% infection rates in M and M-Sr groups, respectively. In addition, active bone remodeling and many mesenchymal cells were observed in the M-Sr group, suggesting good bone regeneration potential in Sr-containing coatings in the case of controlled periimplantitis. Overall, the Sr/Ag-containing TiO2 microporous coating is valuable for preventing periimplantitis and improving implant reosseointegration, and is therefore promising for long-term and high quality use of titanium implants.
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Affiliation(s)
- Huan Wang
- Department of Oral & Maxillofacial Surgery, College of Stomatology, North China University of Science and Technology, 21, Bohai Road, District of Caofeidian (063210), Tangshan City, Hebei Province, P. R. China.
| | - Tian-Xia Zheng
- Department of Oral & Maxillofacial Surgery, College of Stomatology, North China University of Science and Technology, 21, Bohai Road, District of Caofeidian (063210), Tangshan City, Hebei Province, P. R. China.
| | - Nuo-Ya Yang
- Department of Oral & Maxillofacial Surgery, College of Stomatology, North China University of Science and Technology, 21, Bohai Road, District of Caofeidian (063210), Tangshan City, Hebei Province, P. R. China.
| | - Ying Li
- Department of Stomatology, First Hospital of Qinhuangdao, Qinhuangdao City, Hebei Province, China
| | - Hong Sun
- Department of Pathology, College of Basic Medicine, North China University of Science and Technology, Tangshan, Hebei Province, China
| | - Wei Dong
- Department of Oral & Maxillofacial Surgery, College of Stomatology, North China University of Science and Technology, 21, Bohai Road, District of Caofeidian (063210), Tangshan City, Hebei Province, P. R. China.
| | - Li-Fang Feng
- Department of Oral & Maxillofacial Surgery, College of Stomatology, North China University of Science and Technology, 21, Bohai Road, District of Caofeidian (063210), Tangshan City, Hebei Province, P. R. China.
| | - Jiu-Peng Deng
- Department of Oral & Maxillofacial Surgery, College of Stomatology, North China University of Science and Technology, 21, Bohai Road, District of Caofeidian (063210), Tangshan City, Hebei Province, P. R. China.
| | - Meng-Chun Qi
- Department of Oral & Maxillofacial Surgery, College of Stomatology, North China University of Science and Technology, 21, Bohai Road, District of Caofeidian (063210), Tangshan City, Hebei Province, P. R. China.
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Strontium-incorporated bioceramic scaffolds for enhanced osteoporosis bone regeneration. Bone Res 2022; 10:55. [PMID: 35999199 PMCID: PMC9399250 DOI: 10.1038/s41413-022-00224-x] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2021] [Revised: 03/15/2022] [Accepted: 05/29/2022] [Indexed: 11/23/2022] Open
Abstract
The restoration of bone defects caused by osteoporosis remains a challenge for surgeons. Strontium ranelate has been applied in preventative treatment approaches due to the biological functions of the trace element strontium (Sr). In this study, we aimed to fabricate bioactive scaffolds through Sr incorporation based on our previously developed modified amino-functional mesoporous bioactive glass (MBG) and to systematically investigate the bioactivity of the resulting scaffold in vitro and in vivo in an osteoporotic rat model. The results suggested that Sr-incorporated amino-functional MBG scaffolds possessed favorable biocompatibility. Moreover, with the incorporation of Sr, osteogenic and angiogenic capacities were upregulated in vitro. The in vivo results showed that the Sr-incorporated amino-functional MBG scaffolds achieved better bone regeneration and vessel formation. Furthermore, bioinformatics analysis indicated that the Sr-incorporated amino-functional MBG scaffolds could reduce reactive oxygen species levels in bone marrow mesenchymal stem cells in the osteoporotic model by activating the cAMP/PKA signaling pathway, thus playing an anti-osteoporosis role while promoting osteogenesis. This study demonstrated the feasibility of incorporating trace elements into scaffolds and provided new insights into biomaterial design for facilitating bone regeneration in the treatment of osteoporosis.
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Yan R, Li J, Wu Q, Zhang X, Hu L, Deng Y, Jiang R, Wen J, Jiang X. Trace Element-Augmented Titanium Implant With Targeted Angiogenesis and Enhanced Osseointegration in Osteoporotic Rats. Front Chem 2022; 10:839062. [PMID: 35273950 PMCID: PMC8902677 DOI: 10.3389/fchem.2022.839062] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2021] [Accepted: 01/06/2022] [Indexed: 11/16/2022] Open
Abstract
Deteriorated bone quality in osteoporosis challenges the success of implants, which are in urgent need for better early osseointegration as well as antibacterial property for long-term stability. As osteoporotic bone formation tangles with angiogenic clues, the relationship between osteogenesis and angiogenesis has been a novel therapy target for osteoporosis. However, few designs of implant coatings take the compromised osteoporotic angiogenic microenvironment into consideration. Here, we investigated the angiogenic effects of bioactive strontium ions of different doses in HUVECs only and in a co-culture system with BMSCs. A proper dose of strontium ions (0.2–1 mM) could enhance the secretion of VEGFA and Ang-1 in HUVECs as well as in the co-culture system with BMSCs, exhibiting potential to create an angiogenic microenvironment in the early stage that would be beneficial to osteogenesis. Based on the dose screening, we fabricated a bioactive titanium surface doped with zinc and different doses of strontium by plasma electrolytic oxidation (PEO), for the establishment of a microenvironment favoring osseointegration for osteoporosis. The dual bioactive elements augmented titanium surfaces induced robust osteogenic differentiation, and enhanced antimicrobial properties. Augmented titanium implant surfaces exhibited improved bone formation and bone–implant contact under comprehensive assessment of an in vivo bone–implant interface. In conclusion, zinc- and strontium-augmented titanium surface benefits the osseointegration in osteoporosis via promoting osteogenic differentiation, exerting antibacterial efficacy, and stimulating early angiogenesis.
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Affiliation(s)
- Ran Yan
- Key Laboratory of Stomatology, Department of Prosthodontics, College of Stomatology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, National Center for Stomatology; National Clinical Research Center for Oral Diseases, Shanghai Engineering Research Center of Advanced Dental Technology and Materials, Shanghai Jiao Tong University, Shanghai, China
| | - Jinhua Li
- School of Medical Technology, Beijing Institute of Technology, Beijing, China
| | - Qianju Wu
- Key Laboratory of Stomatology, Department of Prosthodontics, College of Stomatology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, National Center for Stomatology; National Clinical Research Center for Oral Diseases, Shanghai Engineering Research Center of Advanced Dental Technology and Materials, Shanghai Jiao Tong University, Shanghai, China
- Stomatological Hospital of Xiamen Medical College, Xiamen, China
| | - Xiangkai Zhang
- Department of Oral and Maxillofacial-Head and Neck Oncology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Longwei Hu
- Department of Oral and Maxillofacial-Head and Neck Oncology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yuwei Deng
- Key Laboratory of Stomatology, Department of Prosthodontics, College of Stomatology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, National Center for Stomatology; National Clinical Research Center for Oral Diseases, Shanghai Engineering Research Center of Advanced Dental Technology and Materials, Shanghai Jiao Tong University, Shanghai, China
| | - Ruixue Jiang
- Key Laboratory of Stomatology, Department of Prosthodontics, College of Stomatology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, National Center for Stomatology; National Clinical Research Center for Oral Diseases, Shanghai Engineering Research Center of Advanced Dental Technology and Materials, Shanghai Jiao Tong University, Shanghai, China
| | - Jin Wen
- Key Laboratory of Stomatology, Department of Prosthodontics, College of Stomatology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, National Center for Stomatology; National Clinical Research Center for Oral Diseases, Shanghai Engineering Research Center of Advanced Dental Technology and Materials, Shanghai Jiao Tong University, Shanghai, China
- *Correspondence: Jin Wen, ; Xinquan Jiang,
| | - Xinquan Jiang
- Key Laboratory of Stomatology, Department of Prosthodontics, College of Stomatology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, National Center for Stomatology; National Clinical Research Center for Oral Diseases, Shanghai Engineering Research Center of Advanced Dental Technology and Materials, Shanghai Jiao Tong University, Shanghai, China
- *Correspondence: Jin Wen, ; Xinquan Jiang,
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Li K, Tian H, Guo A, Jin L, Chen W, Tao B. Gallium (Ga)-strontium (Sr) layered double hydroxide composite coating on titanium substrates for enhanced osteogenic and antibacterial abilities. J Biomed Mater Res A 2021; 110:273-286. [PMID: 34323363 DOI: 10.1002/jbm.a.37284] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2020] [Revised: 07/17/2021] [Accepted: 07/21/2021] [Indexed: 01/25/2023]
Abstract
Bacterial infection and poor osteogenic capacity can result in the loosing or failure of titanium (Ti)-based implants in the clinic. Therefore, it is urgent to design an effective approach to enhance the osteogenic property and restrict bacterial activity. In this study, a layered double hydroxide (LDH) composed of Ga and Sr ions on Ti substrates by a hydrothermal method, then calcined in 250°C and denoted as LDH250. The scanning electron microscopy (SEM), X-ray diffraction (XRD), and X-ray photoelectron spectroscopy (XPS) were confirmed that the LDH films were successfully formed on the Ti substrates. Importantly, the obtained LDH films can induce an alkaline microenvironment around the Ti surface and regulate the behaviors of osteogenic cells and bacteria. In vitro cellular experiments, the LDH250 can enhance the differentiation of both MC3T3-E1 cells and osteoblasts, stimulate alkaline phosphatase activity (ALP), collagen secretion, and mineralization levels. Meanwhile, antimicrobial assay against Escherichia coli (E. coli) and Staphylococcus aureus (S. aureus) demonstrated that the LDH250 samples had strong antibacterial abilities, which attributed to the release profile of Ga3+ could act as a "Trojan horse" to destroy the bacterial iron metabolism, inducing of local alkaline environment, and producing reactive oxygen species. Hence, this study provides an effective method for reducing antibacterial infection and enhancing the bone integrative capacity of Ti-based implants for orthopedic applications.
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Affiliation(s)
- Kai Li
- Department of Orthopedics, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Hongchuan Tian
- Department of Orthopedics, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Ai Guo
- Department of Geriatrics, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Liguo Jin
- College of Chemistry, Nanchang University, Nanchang, Jiangxi, China
| | - Weizhen Chen
- Department of Laboratory Medicine, The First Affiliated Hospital, School of Medicine, Zhejiang University, Zhejiang, Hangzhou, China
| | - Bailong Tao
- Laboratory Research Center, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
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Chen W, Zhu WQ, Qiu J. Impact of exogenous metal ions on peri-implant bone metabolism: a review. RSC Adv 2021; 11:13152-13163. [PMID: 35423842 PMCID: PMC8697588 DOI: 10.1039/d0ra09395e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2020] [Accepted: 03/25/2021] [Indexed: 11/21/2022] Open
Abstract
The development of effective methods to promote the osseointegration of dental implants by surface modification is an area of intense research in dental materials science. Exogenous metal ions present in the implant and surface modifications are closely related to the bone metabolism around the implant. In the complex oral microenvironment, the release of metal ions caused by continuous corrosion of dental implants has an unfavorable impact on the surrounding tissue, and then affects osseointegration, leading to bad results such as loosening and falling off in the late stage of the implant. Besides, these ions can even be distributed in distant tissues and organs. Currently, surface modification techniques are being developed that involve different processing technologies including the introduction of exogenous metal ions with different properties onto the surface of implants to improve performance. However, most metal elements have some level of biological toxicity and can only be used within a safe concentration range to exert the optimum biological effects on recipients. In this paper, we review the adverse effects of metal ions on osseointegration and highlight the emerging applications for metal elements in improving the performance of dental implants.
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Affiliation(s)
- Wei Chen
- Department of Oral Implantology, Affiliated Hospital of Stomatology, Nanjing Medical University Nanjing 210029 PR China +86 25 69593085
- Jiangsu Key Laboratory of Oral Disease, Nanjing Medical University Nanjing 210029 PR China
| | - Wen-Qing Zhu
- Department of Oral Implantology, Affiliated Hospital of Stomatology, Nanjing Medical University Nanjing 210029 PR China +86 25 69593085
- Jiangsu Key Laboratory of Oral Disease, Nanjing Medical University Nanjing 210029 PR China
| | - Jing Qiu
- Department of Oral Implantology, Affiliated Hospital of Stomatology, Nanjing Medical University Nanjing 210029 PR China +86 25 69593085
- Jiangsu Key Laboratory of Oral Disease, Nanjing Medical University Nanjing 210029 PR China
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Li J, Jiang X, Li H, Gelinsky M, Gu Z. Tailoring Materials for Modulation of Macrophage Fate. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2021; 33:e2004172. [PMID: 33565154 PMCID: PMC9245340 DOI: 10.1002/adma.202004172] [Citation(s) in RCA: 116] [Impact Index Per Article: 38.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/18/2020] [Revised: 08/31/2020] [Indexed: 05/03/2023]
Abstract
Human immune system acts as a pivotal role in the tissue homeostasis and disease progression. Immunomodulatory biomaterials that can manipulate innate immunity and adaptive immunity hold great promise for a broad range of prophylactic and therapeutic purposes. This review is focused on the design strategies and principles of immunomodulatory biomaterials from the standpoint of materials science to regulate macrophage fate, such as activation, polarization, adhesion, migration, proliferation, and secretion. It offers a comprehensive survey and discussion on the tunability of material designs regarding physical, chemical, biological, and dynamic cues for modulating macrophage immune response. The range of such tailorable cues encompasses surface properties, surface topography, materials mechanics, materials composition, and materials dynamics. The representative immunoengineering applications selected herein demonstrate how macrophage-immunomodulating biomaterials are being exploited for cancer immunotherapy, infection immunotherapy, tissue regeneration, inflammation resolution, and vaccination. A perspective on the future research directions of immunoregulatory biomaterials is also provided.
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Affiliation(s)
- Jinhua Li
- Centre for Translational Bone, Joint and Soft Tissue Research, University Hospital and Faculty of Medicine Carl Gustav Carus, Technische Universität Dresden, Dresden, 01307, Germany
| | - Xinquan Jiang
- Department of Prosthodontics, Shanghai Engineering Research Center of Advanced Dental Technology and Materials, Shanghai Key Laboratory of Stomatology, Shanghai Research Institute of Stomatology, National Clinical Research Center for Oral Diseases, Shanghai Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine, No. 639 Zhizaoju Road, Shanghai, 200011, China
| | - Hongjun Li
- Department of Bioengineering, University of California, Los Angeles, Los Angeles, CA, 90095, USA
- Jonsson Comprehensive Cancer Center, California NanoSystems Institute and Center for Minimally Invasive Therapeutics, University of California, Los Angeles, Los Angeles, CA, 90095, USA
- College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, 310058, P. R. China
| | - Michael Gelinsky
- Centre for Translational Bone, Joint and Soft Tissue Research, University Hospital and Faculty of Medicine Carl Gustav Carus, Technische Universität Dresden, Dresden, 01307, Germany
| | - Zhen Gu
- Department of Bioengineering, University of California, Los Angeles, Los Angeles, CA, 90095, USA
- Jonsson Comprehensive Cancer Center, California NanoSystems Institute and Center for Minimally Invasive Therapeutics, University of California, Los Angeles, Los Angeles, CA, 90095, USA
- College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, 310058, P. R. China
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7
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Costa AI, Gemini-Piperni S, Alves AC, Costa NA, Checca NR, Leite PE, Rocha LA, Pinto AMP, Toptan F, Rossi AL, Ribeiro AR. TiO 2 bioactive implant surfaces doped with specific amount of Sr modulate mineralization. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2021; 120:111735. [PMID: 33545878 DOI: 10.1016/j.msec.2020.111735] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/05/2020] [Revised: 10/30/2020] [Accepted: 11/11/2020] [Indexed: 11/27/2022]
Abstract
One of the main problems that remain in the implant industry is poor osseointegration due to bioinertness of implants. In order to promote bioactivity, calcium (Ca), phosphorus (P) and strontium (Sr) were incorporated into a TiO2 porous layer produced by micro-arc oxidation. Ca and P as bioactive elements are already well reported in the literature, however, the knowledge of the effect of Sr is still limited. In the present work, the effect of various amounts of Sr was evaluated and the morphology, chemical composition and crystal structure of the oxide layer were investigated. Furthermore, in vitro studies were carried out using human osteoblast-like cells. The oxide layer formed showed a triplex structure, where higher incorporation of Sr increased Ca/P ratio, amount of rutile and promoted the formation of SrTiO3 compound. Biological tests revealed that lower concentrations of Sr did not compromise initial cell adhesion neither viability and interestingly improved mineralization. However, higher concentration of Sr (and consequent higher amount of rutile) showed to induce collagen secretion but with compromised mineralization, possibly due to a delayed mineralization process or induced precipitation of deficient hydroxyapatite. Ca-P-TiO2 porous layer with less concentration of Sr seems to be an ideal candidate for bone implants.
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Affiliation(s)
- A I Costa
- CMEMS-UMinho - Center of MicroElectroMechanical Systems, University of Minho, Guimarães, Portugal; DEMM - Department of Metallurgical and Materials Engineering, Faculty of Engineering of the University of Porto, Porto, Portugal.
| | - S Gemini-Piperni
- Postgraduate Program of Translational Biomedicine, University Grande Rio, Duque de Caxias, Brazil; IBTN/Br - Brazilian Branch of the Institute of Biomaterials, Tribocorrosion and Nanomedicine, São Paulo State University, Bauru, São Paulo, Brazil
| | - A C Alves
- CMEMS-UMinho - Center of MicroElectroMechanical Systems, University of Minho, Guimarães, Portugal
| | - N A Costa
- IBTN/Br - Brazilian Branch of the Institute of Biomaterials, Tribocorrosion and Nanomedicine, São Paulo State University, Bauru, São Paulo, Brazil; Postgraduate Program in Materials Science and Technology, São Paulo State University, Bauru, São Paulo, Brazil
| | - N R Checca
- CBPF - Brazilian Centre for Research in Physics, Rio de Janeiro, Brazil
| | - P E Leite
- Directory of Life Sciences Applied Metrology, National Institute of Metrology Quality and Technology, Xérem, Rio de Janeiro, Brazil; Postgraduate Program in Biotechnology, National Institute of Metrology Quality and Technology, Xérem, Rio de Janeiro, Brazil
| | - L A Rocha
- IBTN/Br - Brazilian Branch of the Institute of Biomaterials, Tribocorrosion and Nanomedicine, São Paulo State University, Bauru, São Paulo, Brazil; Faculty of Science, Department of Physics, São Paulo State University, Bauru, São Paulo, Brazil
| | - A M P Pinto
- CMEMS-UMinho - Center of MicroElectroMechanical Systems, University of Minho, Guimarães, Portugal; DEM - Department of Mechanical Engineering, University of Minho, Guimarães, Portugal
| | - F Toptan
- CMEMS-UMinho - Center of MicroElectroMechanical Systems, University of Minho, Guimarães, Portugal; IBTN/Br - Brazilian Branch of the Institute of Biomaterials, Tribocorrosion and Nanomedicine, São Paulo State University, Bauru, São Paulo, Brazil
| | - A L Rossi
- CBPF - Brazilian Centre for Research in Physics, Rio de Janeiro, Brazil
| | - A R Ribeiro
- Postgraduate Program of Translational Biomedicine, University Grande Rio, Duque de Caxias, Brazil; IBTN/Br - Brazilian Branch of the Institute of Biomaterials, Tribocorrosion and Nanomedicine, São Paulo State University, Bauru, São Paulo, Brazil; Postgraduate Program in Biotechnology, National Institute of Metrology Quality and Technology, Xérem, Rio de Janeiro, Brazil
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8
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Xu N, Fu J, Zhao L, Chu PK, Huo K. Biofunctional Elements Incorporated Nano/Microstructured Coatings on Titanium Implants with Enhanced Osteogenic and Antibacterial Performance. Adv Healthc Mater 2020; 9:e2000681. [PMID: 32875743 DOI: 10.1002/adhm.202000681] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2020] [Revised: 08/02/2020] [Indexed: 12/20/2022]
Abstract
Bone fracture is prevalent among athletes and senior citizens and may require surgical insertion of bone implants. Titanium (Ti) and its alloys are widely used in orthopedics due to its high corrosion resistance, good biocompatibility, and modulus compatible with natural bone tissues. However, bone repair and regrowth are impeded by the insufficient intrinsic osteogenetic capability of Ti and Ti alloys and potential bacterial infection. The physicochemical properties of the materials and nano/microstructures on the implant surface are crucial for clinical success and loading with biofunctional elements such as Sr, Zn, Cu, Si, and Ag into nano/microstructured TiO2 coating has been demonstrated to enhance bone repair/regeneration and bacterial resistance of Ti implants. In this review, recent advances in biofunctional element-incorporated nano/microstructured coatings on Ti and Ti alloy implants are described and the prospects and limitations are discussed.
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Affiliation(s)
- Na Xu
- The State Key Laboratory of Refractories and Metallurgy, Institute of Advanced Materials and Nanotechnology, College of Life Sciences and Health, Wuhan University of Science and Technology, Wuhan, 430081, China
| | - Jijiang Fu
- The State Key Laboratory of Refractories and Metallurgy, Institute of Advanced Materials and Nanotechnology, College of Life Sciences and Health, Wuhan University of Science and Technology, Wuhan, 430081, China
| | - Lingzhou Zhao
- State Key Laboratory of Military Stomatology, National Clinical Research Center for Oral Diseases and Shaanxi Engineering Research Center for Dental Materials and Advanced Manufacture, Department of Periodontology, School of Stomatology, The Fourth Military Medical University, Xi'an, 710032, China
| | - Paul K Chu
- Department of Physics, Department of Materials Science and Engineering and Department of Biomedical Engineering, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, China
| | - Kaifu Huo
- The State Key Laboratory of Refractories and Metallurgy, Institute of Advanced Materials and Nanotechnology, College of Life Sciences and Health, Wuhan University of Science and Technology, Wuhan, 430081, China
- Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, 430074, China
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9
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Wu Q, Wang X, Jiang F, Zhu Z, Wen J, Jiang X. Study of Sr-Ca-Si-based scaffolds for bone regeneration in osteoporotic models. Int J Oral Sci 2020; 12:25. [PMID: 32958751 PMCID: PMC7505977 DOI: 10.1038/s41368-020-00094-1] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2020] [Revised: 08/11/2020] [Accepted: 08/23/2020] [Indexed: 11/12/2022] Open
Abstract
Bone tissue engineering has emerged as a promising alternative therapy for patients who suffer bone fractures or defects caused by trauma, congenital diseases or tumours. However, the reconstruction of bone defects combined with osteoporosis remains a great challenge for clinicians and researchers. Based on our previous study, Ca–Si-based bioceramics (MSCs) showed enhanced bone formation capabilities under normal conditions, and strontium was demonstrated to be therapeutic in promoting bone quality in osteoporosis patients. Therefore, in the present study, we attempted to enlarge the application range of MSCs with Sr incorporation in an osteoporotic bone regeneration model to evaluate whether Sr could assist in regeneration outcomes. In vitro readout suggested that Sr-incorporated MSC scaffolds could enhance the expression level of osteogenic and angiogenic markers of osteoporotic bone mesenchymal stem cells (OVX BMSCs). Animal experiments showed a larger new bone area; in particular, there was a tendency for blood vessel formation to be enhanced in the Sr-MSC scaffold group, showing its positive osteogenic capacity in bone regeneration. This study systematically illustrated the effective delivery of a low-cost therapeutic Sr agent in an osteoporotic model and provided new insight into the treatment of bone defects in osteoporosis patients.
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Affiliation(s)
- Qianju Wu
- Department of Prosthodontics, Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University, School of Medicine, Shanghai, China.,Stomatological Hospital of Xiamen Medical College, Xiamen, China
| | - Xiao Wang
- Department of Prosthodontics, Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University, School of Medicine, Shanghai, China
| | - Fei Jiang
- Department of Prosthodontics, Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University, School of Medicine, Shanghai, China
| | - Ziyuan Zhu
- Department of Prosthodontics, Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University, School of Medicine, Shanghai, China
| | - Jin Wen
- Department of Prosthodontics, Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University, School of Medicine, Shanghai, China.
| | - Xinquan Jiang
- Department of Prosthodontics, Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University, School of Medicine, Shanghai, China.
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10
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Moghanian A, Firoozi S, Tahriri M, Sedghi A. A comparative study on the in vitro formation of hydroxyapatite, cytotoxicity and antibacterial activity of 58S bioactive glass substituted by Li and Sr. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2018; 91:349-360. [PMID: 30033264 DOI: 10.1016/j.msec.2018.05.058] [Citation(s) in RCA: 59] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/15/2017] [Revised: 04/09/2018] [Accepted: 05/17/2018] [Indexed: 01/10/2023]
Abstract
Lithium and strontium up to 10 mol% have been substituted for calcium in 58S bioactive glasses in order to enhance specific biological properties such as proliferation, alkaline phosphatase (ALP) activity of cells as well as antibacterial activity. In-vitro formation of hydroxyapatite was studied using X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), inductively coupled plasma atomic emission spectrometry (ICP-AES) and scanning electron microscopy (SEM). Substitution of either Li or Sr for Ca in the composition had a retarding effect on the bioactivity while Li decreased and Sr increased the rate of ion release in the simulated body fluid solution. The dissolution rate showed to be inversely proportional to oxygen density of the bioactive glasses. The proposed mechanisms for the lowered bioactivity are a lower supersaturation degree for nucleation of apatite in Li substituted bioactive glasses and blocking of the active growth sites of calcium phosphate by Sr2+ in Sr substituted bioactive glasses. The proliferation rate and alkaline phosphate activity of osteoblast cell line MC3T3-E1 treated with Li and Sr bioactive glasses were studied. 3-(4,5dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) and alkaline phosphate assay showed that all synthesized bioactive glasses with exception of 58S with 10 mol% SrO, exhibited statistically significant increase in both cell proliferation and alkaline phosphatase activity. Finally, 58S bioactive glass with 5 mol% Li2O substitution for CaO was considered as a potential biomaterial in bone repair/regeneration therapies with enhanced biocompatibility, and alkaline phosphate activity, with a negligible loss in the bioactivity compared to the 58S bioglass. At the same time this composition had the highest antibacterial activity against methicillin-resistant Staphylococcus aureus bacteria among all synthesized Li and Sr substituted bioactive glasses.
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Affiliation(s)
- Amirhossein Moghanian
- Department of Mining and Metallurgical Engineering, Amirkabir University of Technology, 424 Hafez Ave., Tehran 15875-4413, Iran; Department of Materials Engineering, Imam Khomeini International University, Qazvin 34149-16818, Iran.
| | - Sadegh Firoozi
- Department of Mining and Metallurgical Engineering, Amirkabir University of Technology, 424 Hafez Ave., Tehran 15875-4413, Iran
| | | | - Arman Sedghi
- Department of Materials Engineering, Imam Khomeini International University, Qazvin 34149-16818, Iran
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11
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Effect of a biomimetic titania mesoporous coating doped with Sr on the osteogenic activity. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2018; 91:153-162. [PMID: 30033242 DOI: 10.1016/j.msec.2018.05.036] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/08/2017] [Revised: 03/20/2018] [Accepted: 05/08/2018] [Indexed: 12/19/2022]
Abstract
Fabrication of titanium (Ti)-based biomedical implants with appropriate topography as well as capacity for drug delivery is highly pursued in the field of orthopedic and dental implants. In this study, a biomimetic mesoporous coating imbedded with strontium (MPs-Sr) is prepared by the high current anodization (HCA) and hydrothermal treatment (HT). This coating provides a more stable mechanical performance than the conventional nanotube arrays. The Sr loading is regulated by the HT reaction time and the Sr is released in a controllable manner from the MPs-Sr surface. The hydrophilic performance of MPs-Sr are significantly improved. Furthermore, it is showed that the attachment and spreading of preosteoblast MC3T3-E1 cells are significantly up-regulated by the nanoscale topology of MPs and the doped Sr. The improved collagen secretion and matrix mineralization levels of cells are closely related with the Sr release. The excellent osteogenic properties of MPs-Sr samples highlight their promising potential for use in clinical application.
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12
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Li J, Wen J, Li B, Li W, Qiao W, Shen J, Jin W, Jiang X, Yeung KWK, Chu PK. Valence State Manipulation of Cerium Oxide Nanoparticles on a Titanium Surface for Modulating Cell Fate and Bone Formation. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2018; 5:1700678. [PMID: 29610729 PMCID: PMC5827567 DOI: 10.1002/advs.201700678] [Citation(s) in RCA: 82] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/04/2017] [Revised: 10/19/2017] [Indexed: 05/19/2023]
Abstract
Understanding cell-biomaterial interactions is critical for the control of cell fate for tissue engineering and regenerative medicine. Here, cerium oxide nanoparticles (CeONPs) are applied at different Ce4+/Ce3+ ratios (i.e., 0.46, 1.23, and 3.23) to titanium substrate surfaces by magnetron sputtering and vacuum annealing. Evaluation of the cytotoxicity of the modified surface to cultured rat bone marrow mesenchymal stem cells (BMSCs) reveals that the cytocompatibility and cell proliferation are proportional to the increases in Ce4+/Ce3+ ratio on titanium surface. The bone formation capability induced by these surface modified titanium alloys is evaluated by implanting various CeONP samples into the intramedullary cavity of rat femur for 8 weeks. New bone formation adjacent to the implant shows a close relationship to the surface Ce4+/Ce3+ ratio; higher Ce4+/Ce3+ ratio achieves better osseointegration. The mechanism of this in vivo outcome is explored by culturing rat BMSCs and RAW264.7 murine macrophages on CeONP samples for different durations. The improvement in osteogenic differentiation capability of BMSCs is directly proportional to the increased Ce4+/Ce3+ ratio on the titanium surface. Increases in the Ce4+/Ce3+ ratio also elevate the polarization of the M2 phenotype of RAW264.7 murine macrophages, particularly with respect to the healing-associated M2 percentage and anti-inflammatory cytokine secretion. The manipulation of valence states of CeONPs appears to provide an effective modulation of the osteogenic capability of stem cells and the M2 polarization of macrophages, resulting in favorable outcomes of new bone formation and osseointegration.
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Affiliation(s)
- Jinhua Li
- Department of Orthopaedics and TraumatologyLi Ka Shing Faculty of MedicineThe University of Hong KongPokfulamHong Kong999077China
- Department of PhysicsDepartment of Materials Science and EngineeringCity University of Hong KongTat Chee AvenueKowloonHong Kong999077China
- Shenzhen Key Laboratory for Innovative Technology in Orthopaedic TraumaDepartment of Orthopaedics and TraumatologyThe University of Hong Kong‐Shenzhen HospitalShenzhen518053China
| | - Jin Wen
- Department of ProsthodonticsNinth People's Hospital affiliated to Shanghai Jiao Tong UniversitySchool of MedicineShanghai200011China
| | - Bin Li
- Department of OrthopedicsThe First Affiliated Hospital of Zhengzhou UniversityZhengzhou450052China
| | - Wan Li
- Department of PhysicsDepartment of Materials Science and EngineeringCity University of Hong KongTat Chee AvenueKowloonHong Kong999077China
| | - Wei Qiao
- Dental Materials ScienceApplied Oral SciencesFaculty of DentistryThe University of Hong KongHong Kong999077China
| | - Jie Shen
- Department of Orthopaedics and TraumatologyLi Ka Shing Faculty of MedicineThe University of Hong KongPokfulamHong Kong999077China
- Shenzhen Key Laboratory for Innovative Technology in Orthopaedic TraumaDepartment of Orthopaedics and TraumatologyThe University of Hong Kong‐Shenzhen HospitalShenzhen518053China
| | - Weihong Jin
- Department of PhysicsDepartment of Materials Science and EngineeringCity University of Hong KongTat Chee AvenueKowloonHong Kong999077China
| | - Xinquan Jiang
- Department of ProsthodonticsNinth People's Hospital affiliated to Shanghai Jiao Tong UniversitySchool of MedicineShanghai200011China
| | - Kelvin W. K. Yeung
- Department of Orthopaedics and TraumatologyLi Ka Shing Faculty of MedicineThe University of Hong KongPokfulamHong Kong999077China
- Shenzhen Key Laboratory for Innovative Technology in Orthopaedic TraumaDepartment of Orthopaedics and TraumatologyThe University of Hong Kong‐Shenzhen HospitalShenzhen518053China
| | - Paul K. Chu
- Department of PhysicsDepartment of Materials Science and EngineeringCity University of Hong KongTat Chee AvenueKowloonHong Kong999077China
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13
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Alvarez MM, Aizenberg J, Analoui M, Andrews AM, Bisker G, Boyden ES, Kamm RD, Karp JM, Mooney DJ, Oklu R, Peer D, Stolzoff M, Strano MS, Trujillo-de Santiago G, Webster TJ, Weiss PS, Khademhosseini A. Emerging Trends in Micro- and Nanoscale Technologies in Medicine: From Basic Discoveries to Translation. ACS NANO 2017; 11:5195-5214. [PMID: 28524668 DOI: 10.1021/acsnano.7b01493] [Citation(s) in RCA: 50] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
We discuss the state of the art and innovative micro- and nanoscale technologies that are finding niches and opening up new opportunities in medicine, particularly in diagnostic and therapeutic applications. We take the design of point-of-care applications and the capture of circulating tumor cells as illustrative examples of the integration of micro- and nanotechnologies into solutions of diagnostic challenges. We describe several novel nanotechnologies that enable imaging cellular structures and molecular events. In therapeutics, we describe the utilization of micro- and nanotechnologies in applications including drug delivery, tissue engineering, and pharmaceutical development/testing. In addition, we discuss relevant challenges that micro- and nanotechnologies face in achieving cost-effective and widespread clinical implementation as well as forecasted applications of micro- and nanotechnologies in medicine.
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Affiliation(s)
- Mario M Alvarez
- Centro de Biotecnología-FEMSA, Tecnológico de Monterrey , Ave. Eugenio Garza Sada 2501, Col. Tecnológico, CP 64849 Monterrey, Nuevo León, México
| | - Joanna Aizenberg
- Wyss Institute for Biologically Inspired Engineering, Harvard University , Boston, Massachusetts 02115, United States
| | - Mostafa Analoui
- UConn Venture Development and Incubation, UConn , Storrs, CT 06269, United States
| | | | | | | | | | | | - David J Mooney
- Wyss Institute for Biologically Inspired Engineering, Harvard University , Boston, Massachusetts 02115, United States
| | - Rahmi Oklu
- Division of Interventional Radiology, Mayo Clinic , Scottsdale, Arizona 85259, United States
| | | | | | | | - Grissel Trujillo-de Santiago
- Centro de Biotecnología-FEMSA, Tecnológico de Monterrey , Ave. Eugenio Garza Sada 2501, Col. Tecnológico, CP 64849 Monterrey, Nuevo León, México
| | - Thomas J Webster
- Wenzhou Institute of Biomaterials and Engineering, Wenzhou Medical University , Wenzhou 325000, China
| | | | - Ali Khademhosseini
- Department of Bioindustrial Technologies, College of Animal Bioscience and Technology, Konkuk University , Hwayang-dong, Gwangjin-gu, Seoul 143-701, Republic of Korea
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14
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Mi B, Xiong W, Xu N, Guan H, Fang Z, Liao H, Zhang Y, Gao B, Xiao X, Fu J, Li F. Strontium-loaded titania nanotube arrays repress osteoclast differentiation through multiple signalling pathways: In vitro and in vivo studies. Sci Rep 2017; 7:2328. [PMID: 28539667 PMCID: PMC5443803 DOI: 10.1038/s41598-017-02491-9] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2016] [Accepted: 04/12/2017] [Indexed: 12/21/2022] Open
Abstract
The loosening of implants is an important clinical issue, particularly for patients with osteoporosis. In these patients, an implant should preferably both promote osteoblast differentiation and repress osteoclastic resorption. In the present study, we fabricated coatings containing TiO2 nanotubes (NTs) incorporated with strontium (Sr) on titanium (Ti) surfaces through hydrothermal treatment. The amount of loaded Sr was controlled by hydrothermally treating the samples in a Sr(OH)2 solution for 1 and 3 h (samples NT-Sr1h and NT-Sr3h, respectively) and found that both types of NT-Sr samples inhibited osteoclast differentiation by reducing the expression of osteoclast marker genes. Additionally, this inhibitory effect was mainly attributed to suppression of RANKL-induced activation of nuclear factor-κB (NF-κB). Moreover, NT-Sr also inhibited the Akt and nuclear factor of activated T-cell cytoplasmic 1 (NFATc1) signalling pathways. Interestingly, we also found that NT-Sr promoted RANKL-induced extracellular signal-regulated kinase (ERK) phosphorylation. Using ovariectomised rats as a model, we observed that NT-Sr prevented bone loss in vivo. In conclusion, our findings demonstrate that NT-Sr might effectively inhibit osteoclast differentiation by repressing the NF-κB and Akt/NFATc1 pathways and by negatively regulating the ERK pathway in vitro and in vivo.
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Affiliation(s)
- Baoguo Mi
- Department of Orthopaedic Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Wei Xiong
- Department of Orthopaedic Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Na Xu
- The State Key Laboratory of Refractories and Metallurgy, School of Materials and Metallurgy, Wuhan University of Science and Technology, Wuhan, 430081, China
- Institute of Biology and Medicine, Wuhan University of Science and Technology, Wuhan, 430065, China
| | - Hanfeng Guan
- Department of Orthopaedic Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Zhong Fang
- Department of Orthopaedic Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Hui Liao
- Department of Orthopaedic Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Yong Zhang
- Department of Orthopaedic Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Biao Gao
- The State Key Laboratory of Refractories and Metallurgy, School of Materials and Metallurgy, Wuhan University of Science and Technology, Wuhan, 430081, China
| | - Xiang Xiao
- The State Key Laboratory of Refractories and Metallurgy, School of Materials and Metallurgy, Wuhan University of Science and Technology, Wuhan, 430081, China
| | - Jijiang Fu
- The State Key Laboratory of Refractories and Metallurgy, School of Materials and Metallurgy, Wuhan University of Science and Technology, Wuhan, 430081, China.
- Institute of Biology and Medicine, Wuhan University of Science and Technology, Wuhan, 430065, China.
| | - Feng Li
- Department of Orthopaedic Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China.
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15
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Yu M, Gong J, Zhou Y, Dong L, Lin Y, Ma L, Weng W, Cheng K, Wang H. Surface hydroxyl groups regulate the osteogenic differentiation of mesenchymal stem cells on titanium and tantalum metals. J Mater Chem B 2017; 5:3955-3963. [PMID: 32264256 DOI: 10.1039/c7tb00111h] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Titanium (Ti) and tantalum (Ta) metals have been widely used as implants for their favorable mechanical features and good biocompatibility. However, the results on their osteogenic capacity have been conflicting due to the synergistic effects of complex and multiple material surface features (such as topography, surface chemistries etc.) on cellular behaviors. Here, we directly compare the osteogenic response of mesenchymal stem cells (MSCs) to Ti and Ta metal surfaces with alterable surface hydroxyl groups. Although no difference was found on both surface topographies, cellular adhesion, proliferation, and the expression of osteogenic-related markers were upregulated with the increasing amount of surface hydroxyl groups (-OH) after ultraviolet (UV) light treatment. Moreover, Ti showed better effects in promoting osteogenic differentiation of MSCs than Ta before UV light treatment, but demonstrated the opposite after UV light treatment. These results might be attributed to the comparative quantity of the distinct type of surface hydroxyl groups (bridging-OH and terminal-OH), which regulated the conformation of the initial protein adsorption and subsequent cellular behaviors. Our results demonstrate the central role of the surface hydroxyl groups in mediating cell-material interactions and implicate this interface as helping in optimizing osteointegration of Ti and Ta based orthopaedic and dental implants.
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Affiliation(s)
- Mengfei Yu
- The Affiliated Stomatologic Hospital, Zhejiang University, Hangzhou 310003, China.
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16
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Gong Z, Cheng H, Zhang M, Liu X, Zeng Y, Xiang K, Xu Y, Wang Y, Zhu Z. Osteogenic activity and angiogenesis of a SrTiO3 nano-gridding structure on titanium surface. J Mater Chem B 2017; 5:537-552. [DOI: 10.1039/c6tb02329k] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Dual effect of alveolate double-layered SrTiO3 nano-gridding based on Ti substrate: osteogenic activity and angiogenesis.
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Affiliation(s)
- Zheni Gong
- Institute of Nano-Science and Nano-Technology
- College of Physical Science and Technology
- Central China Normal University
- Wuhan
- China
| | - Haoyan Cheng
- Institute of Nano-Science and Nano-Technology
- College of Physical Science and Technology
- Central China Normal University
- Wuhan
- China
| | - Meng Zhang
- Institute of Nano-Science and Nano-Technology
- College of Physical Science and Technology
- Central China Normal University
- Wuhan
- China
| | - Xi Liu
- Institute of Nano-Science and Nano-Technology
- College of Physical Science and Technology
- Central China Normal University
- Wuhan
- China
| | - Yan Zeng
- College of Chemistry
- Central China Normal University
- Wuhan 430079
- China
| | - Kaiwen Xiang
- Hospital of Central China Normal University
- Central China Normal University
- Wuhan 430079
- China
| | - Yuan Xu
- Institute of Nano-Science and Nano-Technology
- College of Physical Science and Technology
- Central China Normal University
- Wuhan
- China
| | - Yinwei Wang
- Institute of Nano-Science and Nano-Technology
- College of Physical Science and Technology
- Central China Normal University
- Wuhan
- China
| | - Zhihong Zhu
- Institute of Nano-Science and Nano-Technology
- College of Physical Science and Technology
- Central China Normal University
- Wuhan
- China
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17
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He X, Zhang X, Bai L, Hang R, Huang X, Qin L, Yao X, Tang B. Antibacterial ability and osteogenic activity of porous Sr/Ag-containing TiO2 coatings. ACTA ACUST UNITED AC 2016; 11:045008. [PMID: 27508428 DOI: 10.1088/1748-6041/11/4/045008] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Implant-associated infection and poor osseointegration remains a major clinical challenge in Ti-based implant materials. A versatile strategy to endow Ti-based implants with long-term antibacterial ability as well as better osteogenic activity is highly desirable for high quality implantation. Strontium (Sr) has been shown to be a significant element to favor bone growth by promoting new bone formation and inhibiting bone resorption. In this study, a novel duplex-treatment technique encompassing magnetron sputtering with micro-arc oxidation is utilized to fabricate porous Sr/Ag-containing TiO2 coatings loaded with different concentrations of Ag and Sr. All coatings are porous with pore size less than 5 µm. Ag is primarily distributed homogeneously inside the pores, and the concentrations of Ag in Sr/Ag-containing TiO2 coatings with low and high Ag contents are 0.40 at.% and 0.83 at.% respectively. We have demonstrated that this kind of coating displays long-lasting antibacterial ability even up to 28 d due to the incorporation of Ag. Further, Sr/Ag-containing TiO2 coatings with optimum Ag and Sr contents revealed good cytocompatibility, enhanced osteoblast spreading and osseointegration, which stemmed primarily from the synergistic effect exerted by the porous surface topography and the bioactive element Sr. However, this study has also identified, for the first time, that proper addition of Ag would further facilitate osteogenic effects. Besides, Sr may be able to alleviate the potential cytotoxic effect of excessive Ag. Thus, integration of optimum functional elements Ag and Sr into Ti-based implant materials would be expected to expedite osseointegration while simultaneously sustaining long-term antibacterial activity, which would provide new insights for relevant fundamental investigations and biomedical applications.
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Affiliation(s)
- Xiaojing He
- Research Institute of Surface Engineering, Taiyuan University of Technology, 79 Yingze West Street, Taiyuan 030024, People's Republic of China
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18
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Fabrication of TiO 2 -strontium loaded CaSiO 3 / biopolymer coatings with enhanced biocompatibility and corrosion resistance by controlled release of minerals for improved orthopedic applications. J Mech Behav Biomed Mater 2016; 60:476-491. [DOI: 10.1016/j.jmbbm.2016.02.021] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2015] [Revised: 02/10/2016] [Accepted: 02/13/2016] [Indexed: 11/19/2022]
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19
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Surface Treatments and Functional Coatings for Biocompatibility Improvement and Bacterial Adhesion Reduction in Dental Implantology. COATINGS 2016. [DOI: 10.3390/coatings6010007] [Citation(s) in RCA: 69] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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20
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Shen X, Zhang Y, Hu Y, Luo Z, Ma P, Li L, Mu C, Huang L, Pei Y, Cai K. Regulation of local bone remodeling mediated by hybrid multilayer coating embedded with hyaluronan-alendronate/BMP-2 nanoparticles on Ti6Al7Nb implants. J Mater Chem B 2016; 4:7101-7111. [PMID: 32263647 DOI: 10.1039/c6tb01779g] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Hyaluronate-alendronate/BMP-2 nanoparticles were inserted into Gel/Chi multilayers on Ti6Al7Nb for enhancing BMP-2 stability and promoting local osteogenesis under osteoporosis.
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21
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Xu K, Chen W, Hu Y, Shen X, Xu G, Ran Q, Yu Y, Mu C, Cai K. Influence of strontium ions incorporated into nanosheet-pore topographical titanium substrates on osteogenic differentiation of mesenchymal stem cells in vitro and on osseointegration in vivo. J Mater Chem B 2016; 4:4549-4564. [DOI: 10.1039/c6tb00724d] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Strontium ions incorporation and nanosheet-pore topography of titanium substrates synergistically improve the osteogensis of MSCs and osseointegration in vivo.
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Affiliation(s)
- Kui Xu
- Key Laboratory of Biorheological Science and Technology
- Ministry of Education
- College of Bioengineering
- Chongqing University
- Chongqing 400044
| | - Weizhen Chen
- Key Laboratory of Biorheological Science and Technology
- Ministry of Education
- College of Bioengineering
- Chongqing University
- Chongqing 400044
| | - Yan Hu
- Key Laboratory of Biorheological Science and Technology
- Ministry of Education
- College of Bioengineering
- Chongqing University
- Chongqing 400044
| | - Xinkun Shen
- Key Laboratory of Biorheological Science and Technology
- Ministry of Education
- College of Bioengineering
- Chongqing University
- Chongqing 400044
| | - Gaoqiang Xu
- Key Laboratory of Biorheological Science and Technology
- Ministry of Education
- College of Bioengineering
- Chongqing University
- Chongqing 400044
| | - Qichun Ran
- Key Laboratory of Biorheological Science and Technology
- Ministry of Education
- College of Bioengineering
- Chongqing University
- Chongqing 400044
| | - Yonglin Yu
- Key Laboratory of Biorheological Science and Technology
- Ministry of Education
- College of Bioengineering
- Chongqing University
- Chongqing 400044
| | - Caiyun Mu
- Key Laboratory of Biorheological Science and Technology
- Ministry of Education
- College of Bioengineering
- Chongqing University
- Chongqing 400044
| | - Kaiyong Cai
- Key Laboratory of Biorheological Science and Technology
- Ministry of Education
- College of Bioengineering
- Chongqing University
- Chongqing 400044
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