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Knabe C, Stiller M, Kampschulte M, Wilbig J, Peleska B, Günster J, Gildenhaar R, Berger G, Rack A, Linow U, Heiland M, Rendenbach C, Koerdt S, Steffen C, Houshmand A, Xiang-Tischhauser L, Adel-Khattab D. A tissue engineered 3D printed calcium alkali phosphate bioceramic bone graft enables vascularization and regeneration of critical-size discontinuity bony defects in vivo. Front Bioeng Biotechnol 2023; 11:1221314. [PMID: 37397960 PMCID: PMC10311449 DOI: 10.3389/fbioe.2023.1221314] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2023] [Accepted: 06/05/2023] [Indexed: 07/04/2023] Open
Abstract
Introduction: Recently, efforts towards the development of patient-specific 3D printed scaffolds for bone tissue engineering from bioactive ceramics have continuously intensified. For reconstruction of segmental defects after subtotal mandibulectomy a suitable tissue engineered bioceramic bone graft needs to be endowed with homogenously distributed osteoblasts in order to mimic the advantageous features of vascularized autologous fibula grafts, which represent the standard of care, contain osteogenic cells and are transplanted with the respective blood vessel. Consequently, inducing vascularization early on is pivotal for bone tissue engineering. The current study explored an advanced bone tissue engineering approach combining an advanced 3D printing technique for bioactive resorbable ceramic scaffolds with a perfusion cell culture technique for pre-colonization with mesenchymal stem cells, and with an intrinsic angiogenesis technique for regenerating critical size, segmental discontinuity defects in vivo applying a rat model. To this end, the effect of differing Si-CAOP (silica containing calcium alkali orthophosphate) scaffold microarchitecture arising from 3D powder bed printing (RP) or the Schwarzwalder Somers (SSM) replica fabrication technique on vascularization and bone regeneration was analyzed in vivo. In 80 rats 6-mm segmental discontinuity defects were created in the left femur. Methods: Embryonic mesenchymal stem cells were cultured on RP and SSM scaffolds for 7d under perfusion to create Si-CAOP grafts with terminally differentiated osteoblasts and mineralizing bone matrix. These scaffolds were implanted into the segmental defects in combination with an arteriovenous bundle (AVB). Native scaffolds without cells or AVB served as controls. After 3 and 6 months, femurs were processed for angio-µCT or hard tissue histology, histomorphometric and immunohistochemical analysis of angiogenic and osteogenic marker expression. Results: At 3 and 6 months, defects reconstructed with RP scaffolds, cells and AVB displayed a statistically significant higher bone area fraction, blood vessel volume%, blood vessel surface/volume, blood vessel thickness, density and linear density than defects treated with the other scaffold configurations. Discussion: Taken together, this study demonstrated that the AVB technique is well suited for inducing adequate vascularization of the tissue engineered scaffold graft in segmental defects after 3 and 6 months, and that our tissue engineering approach employing 3D powder bed printed scaffolds facilitated segmental defect repair.
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Affiliation(s)
- Christine Knabe
- Department of Experimental Orofacial Medicine, Philipps University Marburg, Marburg, Germany
| | - Michael Stiller
- Department of Experimental Orofacial Medicine, Philipps University Marburg, Marburg, Germany
- Department of Prosthodontics, Philipps University Marburg, Marburg, Germany
| | - Marian Kampschulte
- Department of Radiology, Justus Liebig University Giessen, Giessen, Germany
| | - Janka Wilbig
- Department of Biomaterials and Multimodal Processing, Federal Institute for Materials Research and Testing, Berlin, Germany
| | - Barbara Peleska
- Department of Prosthodontics, Philipps University Marburg, Marburg, Germany
| | - Jens Günster
- Department of Biomaterials and Multimodal Processing, Federal Institute for Materials Research and Testing, Berlin, Germany
| | - Renate Gildenhaar
- Department of Biomaterials and Multimodal Processing, Federal Institute for Materials Research and Testing, Berlin, Germany
| | - Georg Berger
- Department of Biomaterials and Multimodal Processing, Federal Institute for Materials Research and Testing, Berlin, Germany
| | - Alexander Rack
- Structure of Materials Group, ESRF (European Synchroton Radiation Facility), Grenoble, France
| | - Ulf Linow
- Department of Biomaterials and Multimodal Processing, Federal Institute for Materials Research and Testing, Berlin, Germany
| | - Max Heiland
- Department of Oral and Maxillofacial Surgery, Charité University Medical Center Berlin (Charité-Universitätsmedizin Berlin), Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany
| | - Carsten Rendenbach
- Department of Oral and Maxillofacial Surgery, Charité University Medical Center Berlin (Charité-Universitätsmedizin Berlin), Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany
| | - Steffen Koerdt
- Department of Oral and Maxillofacial Surgery, Charité University Medical Center Berlin (Charité-Universitätsmedizin Berlin), Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany
| | - Claudius Steffen
- Department of Oral and Maxillofacial Surgery, Charité University Medical Center Berlin (Charité-Universitätsmedizin Berlin), Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany
| | - Alireza Houshmand
- Department of Experimental Orofacial Medicine, Philipps University Marburg, Marburg, Germany
| | - Li Xiang-Tischhauser
- Department of Experimental Orofacial Medicine, Philipps University Marburg, Marburg, Germany
| | - Doaa Adel-Khattab
- Department of Experimental Orofacial Medicine, Philipps University Marburg, Marburg, Germany
- Department of Periodontology, Ain Shams University, Cairo, Egypt
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Huang L, Cai B, Huang Y, Wang J, Zhu C, Shi K, Song Y, Feng G, Liu L, Zhang L. Comparative Study on 3D Printed Ti6Al4V Scaffolds with Surface Modifications Using Hydrothermal Treatment and Microarc Oxidation to Enhance Osteogenic Activity. ACS OMEGA 2021; 6:1465-1476. [PMID: 33490806 PMCID: PMC7818615 DOI: 10.1021/acsomega.0c05191] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/24/2020] [Accepted: 12/28/2020] [Indexed: 02/08/2023]
Abstract
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Titanium (Ti) and
its alloys have been widely used in clinics as
preferred materials for bone tissue repair and replacement. However,
the lack of biological activity of Ti limits its clinical applications.
Surface modification of Ti with bioactive elements has always been
a research hotspot. In this study, to promote the osseointegration
of Ti6Al4V (Ti64) implants, calcium (Ca), oxygen (O), and phosphorus
(P) codoped multifunctional micro–nanohybrid coatings were
prepared on a three-dimensional (3D) printed porous Ti64 surface by
microarc oxidation (MAO) and a hydrothermal method (HT). The surface
morphologies, chemical compositions, and surface/cell interactions
of the obtained coatings were studied. In vitro experiments
indicated that all hybrid coating-modified Ti64 implants could enhance
protein adsorption and MC3T3 osteoblasts’ activity, adhesion,
and differentiation ability. In vivo experiments
showed that the hybrid coating promoted early osseointegration. By
comparison, microarc oxidation-treated Ti64 (M-Ti) has the best biological
activity and the strongest ability of osseointegration. It provides
important theoretical significance and potential application prospects
for improving the biological activity of Ti implants.
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Affiliation(s)
- Leizhen Huang
- Department of Orthopedic Surgery and Orthopedic Research Institue, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, China
| | - Bianyun Cai
- College of Medical Technology and Engineering, Henan University of Science and Technology, Luoyang, Henan 471026, China
| | - Yong Huang
- Department of Orthopedic Surgery and Orthopedic Research Institue, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, China
| | - Jingcheng Wang
- Department of Orthopedic Surgery and Orthopedic Research Institue, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, China
| | - Ce Zhu
- Department of Orthopedic Surgery and Orthopedic Research Institue, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, China
| | - Kun Shi
- Department of Orthopedic Surgery and Orthopedic Research Institue, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, China
| | - Yueming Song
- Department of Orthopedic Surgery and Orthopedic Research Institue, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, China
| | - Ganjun Feng
- Department of Orthopedic Surgery and Orthopedic Research Institue, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, China
| | - Limin Liu
- Department of Orthopedic Surgery and Orthopedic Research Institue, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, China
| | - Li Zhang
- Analytical and Testing Center, Sichuan University, Chengdu, Sichuan 610065, China
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Jiang N, Guo Z, Sun D, Li Y, Yang Y, Chen C, Zhang L, Zhu S. Promoting Osseointegration of Ti Implants through Micro/Nanoscaled Hierarchical Ti Phosphate/Ti Oxide Hybrid Coating. ACS NANO 2018; 12:7883-7891. [PMID: 29979574 DOI: 10.1021/acsnano.8b02227] [Citation(s) in RCA: 59] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
In this study, micro/nanoscaled hierarchical hybrid coatings containing titanium (Ti) phosphate and Ti oxide have been fabricated with the aim of promoting osseointegration of Ti-based implants. Three representative surface coatings, namely, micro/nanograss Ti (P-G-Ti), micro/nanoclump Ti, (P-C-Ti), and micro/nanorod Ti (P-R-Ti), have been produced. In-depth investigations into the coating surface morphology, topography, chemical composition, and the surface/cell interaction have been carried out using scanning electron microscopy, transmission electron microscope, X-ray photoelectron spectroscopy, X-ray diffraction, contact-angle measurement, and protein adsorption assay. In addition, in vitro performance of the coating (cell proliferation, adhesion, and differentiation) has been evaluated using rat bone marrow stromal cells (BMSCs), and in vivo assessments have been carried out based on a rat tibia implantation model. All the hybrid coating modified implants demonstrated enhanced protein adsorption and BMSC viability, adhesion and differentiation, with P-G-Ti showing the best bioactivity among all samples. Subsequent i n vivo osseointegration tests confirmed that P-G-Ti has induced a much stronger interfacial bonding with the host tissue, indicated by the 2-fold increase in the ultimate shear strength and over 6-fold increase in the maximum push-out force compared to unmodified Ti implants. The state-of-the-art coating technology proposed for Ti-based implants in this study holds great potential in advancing medical devices for next-generation healthcare technology.
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Affiliation(s)
- Nan Jiang
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Disease, and West China Hospital of Stomatology, Sichuan University, Chengdu 610065, China
| | - Zhijun Guo
- Research Center for Nano-Biomaterials, Analytical and Testing Center, Sichuan University, Chengdu 610065, China
- School of Mechanical and Aerospace Engineering, Queens University Belfast, Belfast BT7 1NN, U.K
| | - Dan Sun
- School of Mechanical and Aerospace Engineering, Queens University Belfast, Belfast BT7 1NN, U.K
| | - Yubao Li
- Research Center for Nano-Biomaterials, Analytical and Testing Center, Sichuan University, Chengdu 610065, China
| | - Yutao Yang
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Disease, and West China Hospital of Stomatology, Sichuan University, Chengdu 610065, China
| | - Chen Chen
- Research Center for Nano-Biomaterials, Analytical and Testing Center, Sichuan University, Chengdu 610065, China
| | - Li Zhang
- Research Center for Nano-Biomaterials, Analytical and Testing Center, Sichuan University, Chengdu 610065, China
| | - Songsong Zhu
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Disease, and West China Hospital of Stomatology, Sichuan University, Chengdu 610065, China
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