1
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Alkhodary MA. Effect of controlled surface roughness and biomimetic coating on titanium implants adhesion to the bone: An experiment animal study. Saudi Dent J 2023; 35:819-826. [PMID: 38025594 PMCID: PMC10658383 DOI: 10.1016/j.sdentj.2023.07.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2023] [Revised: 07/08/2023] [Accepted: 07/10/2023] [Indexed: 12/01/2023] Open
Abstract
Introduction Laser micromachining of titanium and its alloys can create micro-grooves with sizes similar to cell diameter of about 10 μm. Its coating with arginine-glycine-aspartic acid (RGD) may enhance cellular spreading and adhesion. This study aimed to evaluate the effect of laser micro-grooving and laser micro-grooving combined with RGD coating on the strength of the dental implants/bone interface using destructive mechanical pullout testing in experimental animals. Materials and methods In this study, the test groups consisted of 1.5-mm diameter, 5-mm long laser-grooved and laser-grooved/RGD coated titanium alloy (Ti-6Al-4 V) rods, and the control group included plain titanium alloy (Ti-6Al-4 V) rods. These rods were implanted in the mandibles of New Zealand white rabbits for 2, 4, and 6 weeks. After sacrifice, the test and control specimens were retrieved for mechanical pullout testing. The DMA 7-e was used to pull the titanium rods out of the bone, the probe position was plotted versus time graph to monitor the test progression, and the static modulus versus time graph was viewed; such graphs was then transformed into tables. The results were analyzed using the Mann-Whitney test. Results The laser-grooved/RGD coated rods had significantly higher pull-out strength than the laser-grooved and control rods. Additionally, the laser-grooved rods had significantly higher pull-out strength than control rods. Conclusion Two novel surface treatments were used: laser micro-grooving and tri peptide RGD coating, both of which had different effects on the dental implant interface. Laser grooving improved peri-implant bone healing, whereas RGD coating facilitated earlier bone-implant adhesion and better mineralization.
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Affiliation(s)
- Mohamed Ahmed Alkhodary
- Corresponding author at: Department of Prosthetic Dental Sciences, College of Dentistry, Qassim University, P.O. Box 6700, Burydah 51452, Saudi Arabia.
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2
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Parfenova LV, Galimshina ZR, Gil’fanova GU, Alibaeva EI, Danilko KV, Aubakirova VR, Farrakhov RG, Parfenov EV, Valiev RZ. Modeling of Biological Activity of PEO-Coated Titanium Implants with Conjugates of Cyclic RGD Peptide with Amino Acid Bisphosphonates. MATERIALS (BASEL, SWITZERLAND) 2022; 15:8120. [PMID: 36431607 PMCID: PMC9699121 DOI: 10.3390/ma15228120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Revised: 11/07/2022] [Accepted: 11/12/2022] [Indexed: 06/16/2023]
Abstract
Titanium is considered to be the most essential metal in the field of implantology. The main factors determining metal biocompatibility, among others, include the morphology and chemical composition of the titanium surface. Therefore, the aim of this work was to develop approaches to control the biological activity of the titanium surface by creating coatings that combine both an inorganic phase with a given morphology and organic molecules containing an integrin-selective peptide that regulate cell adhesion and proliferation. As such, we synthesized new c(RGDfC) derivatives of amino acid bisphosphonates (four examples) with different bisphosphonate anchors and maleimide linkers. These molecules were deposited on a highly developed porous surface obtained via the plasma electrolytic oxidation (PEO) of coarse-grained and nanostructured titanium. In vitro studies demonstrated the increase in the viability degree of mesenchymal stem cells and fibroblasts on the surface of coarse-grained or nanostructured titanium modified with PEO and a c(RGDfC) derivative of ε-aminocaproic acid bisphophonate with an SMCC linker. As a result, the use of conjugates of amino acid bisphosphonates with a cyclic RGD peptide for the modification of PEO-coated titanium opens the ways for the effective control of the biological activity of the metal implant surface.
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Affiliation(s)
- Lyudmila V. Parfenova
- Institute of Petrochemistry and Catalysis, Ufa Federal Research Center, Russian Academy of Sciences, 141, Prospekt Oktyabrya, 450075 Ufa, Russia
| | - Zulfiya R. Galimshina
- Institute of Petrochemistry and Catalysis, Ufa Federal Research Center, Russian Academy of Sciences, 141, Prospekt Oktyabrya, 450075 Ufa, Russia
| | - Guzel U. Gil’fanova
- Institute of Petrochemistry and Catalysis, Ufa Federal Research Center, Russian Academy of Sciences, 141, Prospekt Oktyabrya, 450075 Ufa, Russia
| | - Eliza I. Alibaeva
- Institute of Petrochemistry and Catalysis, Ufa Federal Research Center, Russian Academy of Sciences, 141, Prospekt Oktyabrya, 450075 Ufa, Russia
| | - Ksenia V. Danilko
- Central Research Laboratory, Bashkir State Medical University, 3 Lenin Street, 450000 Ufa, Russia
| | - Veta R. Aubakirova
- Department of Electronic Engineering, Ufa State Aviation Technical University, 12 Karl Marx Street, 450008 Ufa, Russia
| | - Ruzil G. Farrakhov
- Department of Electronic Engineering, Ufa State Aviation Technical University, 12 Karl Marx Street, 450008 Ufa, Russia
| | - Evgeny V. Parfenov
- Department of Materials Science and Physics of Metals, Ufa State Aviation Technical University, 12 Karl Marx Street, 450008 Ufa, Russia
| | - Ruslan Z. Valiev
- Department of Materials Science and Physics of Metals, Ufa State Aviation Technical University, 12 Karl Marx Street, 450008 Ufa, Russia
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3
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Oliver-Cervelló L, Martin-Gómez H, Mandakhbayar N, Jo YW, Cavalcanti-Adam EA, Kim HW, Ginebra MP, Lee JH, Mas-Moruno C. Mimicking Bone Extracellular Matrix: From BMP-2-Derived Sequences to Osteogenic-Multifunctional Coatings. Adv Healthc Mater 2022; 11:e2201339. [PMID: 35941083 DOI: 10.1002/adhm.202201339] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2022] [Indexed: 01/28/2023]
Abstract
Cell-material interactions are regulated by mimicking bone extracellular matrix on the surface of biomaterials. In this regard, reproducing the extracellular conditions that promote integrin and growth factor (GF) signaling is a major goal to trigger bone regeneration. Thus, the use of synthetic osteogenic domains derived from bone morphogenetic protein 2 (BMP-2) is gaining increasing attention, as this strategy is devoid of the clinical risks associated with this molecule. In this work, the wrist and knuckle epitopes of BMP-2 are screened to identify peptides with potential osteogenic properties. The most active sequences (the DWIVA motif and its cyclic version) are combined with the cell adhesive RGD peptide (linear and cyclic variants), to produce tailor-made biomimetic peptides presenting the bioactive cues in a chemically and geometrically defined manner. Such multifunctional peptides are next used to functionalize titanium surfaces. Biological characterization with mesenchymal stem cells demonstrates the ability of the biointerfaces to synergistically enhance cell adhesion and osteogenic differentiation. Furthermore, in vivo studies in rat calvarial defects prove the capacity of the biomimetic coatings to improve new bone formation and reduce fibrous tissue thickness. These results highlight the potential of mimicking integrin-GF signaling with synthetic peptides, without the need for exogenous GFs.
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Affiliation(s)
- Lluís Oliver-Cervelló
- Biomaterials, Biomechanics and Tissue Engineering Group, Department of Materials Science and Engineering, Universitat Politècnica de Catalunya (UPC), Barcelona, 08019, Spain.,Barcelona Research Center in Multiscale Science and Engineering, UPC, Barcelona, 08019, Spain
| | - Helena Martin-Gómez
- Biomaterials, Biomechanics and Tissue Engineering Group, Department of Materials Science and Engineering, Universitat Politècnica de Catalunya (UPC), Barcelona, 08019, Spain.,Barcelona Research Center in Multiscale Science and Engineering, UPC, Barcelona, 08019, Spain
| | - Nandin Mandakhbayar
- Institute of Tissue Regeneration Engineering (ITREN), Dankook University, Cheonan, 330-714, Republic of Korea.,Department of Nanobiomedical Science & BK21 PLUS NBM Global Research Center for Regenerative Medicine, Dankook University, Cheonan, 330-714, Republic of Korea.,Department of Biomaterials Science, School of Dentistry, Dankook University, Cheonan, 330-714, Republic of Korea
| | - Young-Woo Jo
- Neobiotech Co., Ltd R&D Center, Seoul, 08381, Republic of Korea
| | - Elisabetta Ada Cavalcanti-Adam
- Department of Cellular Biophysics, Growth Factor Mechanobiology group, Max Planck Institute for Medical Research Jahnstraße 29, 69120, Heidelberg, Germany
| | - Hae-Won Kim
- Institute of Tissue Regeneration Engineering (ITREN), Dankook University, Cheonan, 330-714, Republic of Korea.,Department of Nanobiomedical Science & BK21 PLUS NBM Global Research Center for Regenerative Medicine, Dankook University, Cheonan, 330-714, Republic of Korea.,Department of Biomaterials Science, School of Dentistry, Dankook University, Cheonan, 330-714, Republic of Korea
| | - Maria-Pau Ginebra
- Biomaterials, Biomechanics and Tissue Engineering Group, Department of Materials Science and Engineering, Universitat Politècnica de Catalunya (UPC), Barcelona, 08019, Spain.,Barcelona Research Center in Multiscale Science and Engineering, UPC, Barcelona, 08019, Spain.,Institute for Bioengineering of Catalonia, Barcelona, 08028, Spain
| | - Jung-Hwan Lee
- Institute of Tissue Regeneration Engineering (ITREN), Dankook University, Cheonan, 330-714, Republic of Korea.,Department of Nanobiomedical Science & BK21 PLUS NBM Global Research Center for Regenerative Medicine, Dankook University, Cheonan, 330-714, Republic of Korea.,Department of Biomaterials Science, School of Dentistry, Dankook University, Cheonan, 330-714, Republic of Korea
| | - Carlos Mas-Moruno
- Biomaterials, Biomechanics and Tissue Engineering Group, Department of Materials Science and Engineering, Universitat Politècnica de Catalunya (UPC), Barcelona, 08019, Spain.,Barcelona Research Center in Multiscale Science and Engineering, UPC, Barcelona, 08019, Spain
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4
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Yang M, Zhang ZC, Liu Y, Chen YR, Deng RH, Zhang ZN, Yu JK, Yuan FZ. Function and Mechanism of RGD in Bone and Cartilage Tissue Engineering. Front Bioeng Biotechnol 2022; 9:773636. [PMID: 34976971 PMCID: PMC8714999 DOI: 10.3389/fbioe.2021.773636] [Citation(s) in RCA: 30] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2021] [Accepted: 11/08/2021] [Indexed: 12/12/2022] Open
Abstract
Bone and cartilage injury is common, tissue engineered scaffolds are potential means to repair. Because most of the scaffold materials used in bone and cartilage tissue engineering are bio-inert, it is necessary to increase the cellular adhesion ability of during tissue engineering reconstruction. The Arginine - Glycine - Aspartic acid (Arg-Gly-Asp, RGD) peptide family is considered as a specific recognition site for the integrin receptors. Integrin receptors are key regulators of cell-cell and cell-extracellular microenvironment communication. Therefore, the RGD polypeptide families are considered as suitable candidates for treatment of a variety of diseases and for the regeneration of various tissues and organs. Many scaffold material for tissue engineering and has been approved by US Food and Drug Administration (FDA) for human using. The application of RGD peptides in bone and cartilage tissue engineering was reported seldom. Only a few reviews have summarized the applications of RGD peptide with alloy, bone cements, and PCL in bone tissue engineering. Herein, we summarize the application progress of RGD in bone and cartilage tissue engineering, discuss the effects of structure, sequence, concentration, mechanical stimulation, physicochemical stimulation, and time stimulation of RGD peptide on cells differentiation, and introduce the mechanism of RGD peptide through integrin in the field of bone and cartilage tissue engineering.
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Affiliation(s)
- Meng Yang
- Sports Medicine Department, Beijing Key Laboratory of Sports Injuries, Peking University Third Hospital, Beijing, China.,Institute of Sports Medicine of Peking University, Beijing, China.,School of Clinical Medicine, Weifang Medical University, Weifang, China
| | - Zheng-Chu Zhang
- Beijing National Laboratory for Molecular Sciences, Center for Soft Matter Science and Engineering, Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, College of Chemistry and Molecular Engineering, Peking University, Beijing, China
| | - Yan Liu
- Sports Medicine Department, Beijing Key Laboratory of Sports Injuries, Peking University Third Hospital, Beijing, China.,Institute of Sports Medicine of Peking University, Beijing, China
| | - You-Rong Chen
- Sports Medicine Department, Beijing Key Laboratory of Sports Injuries, Peking University Third Hospital, Beijing, China.,Institute of Sports Medicine of Peking University, Beijing, China
| | - Rong-Hui Deng
- Sports Medicine Department, Beijing Key Laboratory of Sports Injuries, Peking University Third Hospital, Beijing, China.,Institute of Sports Medicine of Peking University, Beijing, China
| | - Zi-Ning Zhang
- Sports Medicine Department, Beijing Key Laboratory of Sports Injuries, Peking University Third Hospital, Beijing, China.,Institute of Sports Medicine of Peking University, Beijing, China
| | - Jia-Kuo Yu
- Sports Medicine Department, Beijing Key Laboratory of Sports Injuries, Peking University Third Hospital, Beijing, China.,Institute of Sports Medicine of Peking University, Beijing, China.,School of Clinical Medicine, Weifang Medical University, Weifang, China
| | - Fu-Zhen Yuan
- Sports Medicine Department, Beijing Key Laboratory of Sports Injuries, Peking University Third Hospital, Beijing, China.,Institute of Sports Medicine of Peking University, Beijing, China
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5
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Cho Y, Lee M, Park S, Kim Y, Lee E, Im SG. A Versatile Surface Modification Method via Vapor-phase Deposited Functional Polymer Films for Biomedical Device Applications. BIOTECHNOL BIOPROC E 2021; 26:165-178. [PMID: 33821132 PMCID: PMC8013202 DOI: 10.1007/s12257-020-0269-1] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2020] [Revised: 10/05/2020] [Accepted: 10/08/2020] [Indexed: 01/01/2023]
Abstract
For last two decades, the demand for precisely engineered three-dimensional structures has increased continuously for the developments of biomaterials. With the recent advances in micro- and nano-fabrication techniques, various devices with complex surface geometries have been devised and produced in the pharmaceutical and medical fields for various biomedical applications including drug delivery and biosensors. These advanced biomaterials have been designed to mimic the natural environments of tissues more closely and to enhance the performance for their corresponding biomedical applications. One of the important aspects in the rational design of biomaterials is how to configure the surface of the biomedical devices for better control of the chemical and physical properties of the bioactive surfaces without compromising their bulk characteristics. In this viewpoint, it of critical importance to secure a versatile method to modify the surface of various biomedical devices. Recently, a vapor phase method, termed initiated chemical vapor deposition (iCVD) has emerged as damage-free method highly beneficial for the conformal deposition of various functional polymer films onto many kinds of micro- and nano-structured surfaces without restrictions on the substrate material or geometry, which is not trivial to achieve by conventional solution-based surface functionalization methods. With proper structural design, the functional polymer thin film via iCVD can impart required functionality to the biomaterial surfaces while maintaining the fine structure thereon. We believe the iCVD technique can be not only a valuable approach towards fundamental cell-material studies, but also of great importance as a platform technology to extend to other prospective biomaterial designs and material interface modifications for biomedical applications.
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Affiliation(s)
- Younghak Cho
- Department of Chemical and Biomolecular Engineering, Korea Advanced of Institute of Science and Technology, Daejeon, 34141 Korea
| | - Minseok Lee
- Department of Chemical and Biomolecular Engineering, Korea Advanced of Institute of Science and Technology, Daejeon, 34141 Korea
| | - Seonghyeon Park
- Department of Chemical and Biomolecular Engineering, Korea Advanced of Institute of Science and Technology, Daejeon, 34141 Korea
| | - Yesol Kim
- Department of Chemical and Biomolecular Engineering, Korea Advanced of Institute of Science and Technology, Daejeon, 34141 Korea
| | - Eunjung Lee
- Department of Chemical and Biomolecular Engineering, Korea Advanced of Institute of Science and Technology, Daejeon, 34141 Korea
| | - Sung Gap Im
- Department of Chemical and Biomolecular Engineering, Korea Advanced of Institute of Science and Technology, Daejeon, 34141 Korea
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6
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Akiyama Y, Ito M, Toriumi T, Hiratsuka T, Arai Y, Tanaka S, Futenma T, Akiyama Y, Yamaguchi K, Azuma A, Hata KI, Natsume N, Honda M. Bone formation potential of collagen type I-based recombinant peptide particles in rat calvaria defects. Regen Ther 2020; 16:12-22. [PMID: 33426238 PMCID: PMC7773759 DOI: 10.1016/j.reth.2020.12.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2020] [Revised: 11/25/2020] [Accepted: 12/03/2020] [Indexed: 12/28/2022] Open
Abstract
Introduction This study aimed to examine the bone-forming ability of medium-cross-linked recombinant collagen peptide (mRCP) particles developedbased on human collagen type I, contains an arginyl-glycyl-aspartic acid-rich motif, fabricated as bone filling material, compared to that of the autologous bone graft. Methods Calvarial bone defects were created in immunodeficient rats though a surgical procedure. The rats were divided into 2 groups: mRCP graft and tibia bone graft (bone graft). The bone formation potential of mRCP was evaluated by micro-computed tomography and hematoxylin-eosin staining at 1, 2, 3, and 4 weeks after surgery, and the data were analyzed and compared to those of the bone graft. Results The axial volume-rendered images demonstrated considerable bony bridging with the mRCP graft, but there was no significant difference in the bone volume and bone mineral density between the mRCP graft and bone graft at 4 weeks. The peripheral new bone density was significantly higher than the central new bone density and the bottom side score was significantly higher than the top side score at early stage in the regenerated bone within the bone defects. Conclusion These results indicate that mRCP has a high potential of recruiting osteogenic cells, comparable to that of autologous bone chips. Bone formation potential of mRCP were comparable to that of autogenous bone. mRCP particles exhibit high new bone formation potential in the calvaria defect. Bone bridging was observed over the entire defect in mRCP graft at 4 weeks. mRCP has a high potential of recruiting osteogenic cells comparable to bone graft.
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Key Words
- ALP, alkaline phosphatase
- Autologous bone
- BMD, bone mineral density
- BMSCs, bone marrow derived mesenchymal stem cells
- Bone reconstruction
- Bone substitute
- CSD, critical-size defect
- Calvaria
- Collagen scaffold
- DHT, dehydothermal treatment
- H&E, hematoxylin and eosin
- RCP, recombinant collagen peptide
- RGD, arginyl-glycyl-aspartic acid
- ROIs, regions of interest
- Recombinant human collagen peptide
- SD, standard deviation
- TRAP, tartrate-resistant acid phosphatase
- mRCP, medium-cross-linked RCP
- micro-CT, micro-computed tomography
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Affiliation(s)
- Yasunori Akiyama
- Division of Research and Treatment for Oral and Maxillofacial Congenital Anomalies, School of Dentistry, Aichi Gakuin University, 2-11 Suemori-dori, Chikusa-ku, Nagoya, Aichi, 464-8651, Japan
| | - Masaaki Ito
- Division of Research and Treatment for Oral and Maxillofacial Congenital Anomalies, School of Dentistry, Aichi Gakuin University, 2-11 Suemori-dori, Chikusa-ku, Nagoya, Aichi, 464-8651, Japan
| | - Taku Toriumi
- Department of Oral Anatomy, School of Dentistry, Aichi Gakuin University, 1-100 Kusumoto-cho, Chikusa-ku, Nagoya, Aichi, 464-8650, Japan
| | - Takahiro Hiratsuka
- Bio Science & Engineering Laboratory, Research & Development Management Headquarters FUJIFILM Corporation, 577 Ushijima, Kaisei-machi, Ashigarakami-gun, Kanagawa, 258-8577, Japan
| | - Yoshinori Arai
- Department of Oral and Maxillofacial Radiology, Nihon University School of Dentistry, 1-8-13 Kanda-Surugadai, Chiyoda-ku, Tokyo, 101-8310, Japan
| | - Sho Tanaka
- Department of Oral Anatomy, School of Dentistry, Aichi Gakuin University, 1-100 Kusumoto-cho, Chikusa-ku, Nagoya, Aichi, 464-8650, Japan
| | - Taku Futenma
- Department of Oral Anatomy, School of Dentistry, Aichi Gakuin University, 1-100 Kusumoto-cho, Chikusa-ku, Nagoya, Aichi, 464-8650, Japan
| | - Yuhki Akiyama
- Division of Research and Treatment for Oral and Maxillofacial Congenital Anomalies, School of Dentistry, Aichi Gakuin University, 2-11 Suemori-dori, Chikusa-ku, Nagoya, Aichi, 464-8651, Japan
| | - Kazuhiro Yamaguchi
- Bio Science & Engineering Laboratory, Research & Development Management Headquarters FUJIFILM Corporation, 577 Ushijima, Kaisei-machi, Ashigarakami-gun, Kanagawa, 258-8577, Japan
| | - Akihiko Azuma
- Bio Science & Engineering Laboratory, Research & Development Management Headquarters FUJIFILM Corporation, 577 Ushijima, Kaisei-machi, Ashigarakami-gun, Kanagawa, 258-8577, Japan
| | - Ken-Ichiro Hata
- Bio Science & Engineering Laboratory, Research & Development Management Headquarters FUJIFILM Corporation, 577 Ushijima, Kaisei-machi, Ashigarakami-gun, Kanagawa, 258-8577, Japan
| | - Nagato Natsume
- Division of Research and Treatment for Oral and Maxillofacial Congenital Anomalies, School of Dentistry, Aichi Gakuin University, 2-11 Suemori-dori, Chikusa-ku, Nagoya, Aichi, 464-8651, Japan
| | - Masaki Honda
- Department of Oral Anatomy, School of Dentistry, Aichi Gakuin University, 1-100 Kusumoto-cho, Chikusa-ku, Nagoya, Aichi, 464-8650, Japan
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7
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Lovati AB, Lopa S, Bottagisio M, Talò G, Canciani E, Dellavia C, Alessandrino A, Biagiotti M, Freddi G, Segatti F, Moretti M. Peptide-Enriched Silk Fibroin Sponge and Trabecular Titanium Composites to Enhance Bone Ingrowth of Prosthetic Implants in an Ovine Model of Bone Gaps. Front Bioeng Biotechnol 2020; 8:563203. [PMID: 33195126 PMCID: PMC7604365 DOI: 10.3389/fbioe.2020.563203] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2020] [Accepted: 09/21/2020] [Indexed: 12/18/2022] Open
Abstract
Osteoarthritis frequently requires arthroplasty. Cementless implants are widely used in clinics to replace damaged cartilage or missing bone tissue. In cementless arthroplasty, the risk of aseptic loosening strictly depends on implant stability and bone–implant interface, which are fundamental to guarantee the long-term success of the implant. Ameliorating the features of prosthetic materials, including their porosity and/or geometry, and identifying osteoconductive and/or osteoinductive coatings of implant surfaces are the main strategies to enhance the bone-implant contact surface area. Herein, the development of a novel composite consisting in the association of macro-porous trabecular titanium with silk fibroin (SF) sponges enriched with anionic fibroin-derived polypeptides is described. This composite is applied to improve early bone ingrowth into the implant mesh in a sheep model of bone defects. The composite enables to nucleate carbonated hydroxyapatite and accelerates the osteoblastic differentiation of resident cells, inducing an outward bone growth, a feature that can be particularly relevant when applying these implants in the case of poor osseointegration. Moreover, the osteoconductive properties of peptide-enriched SF sponges support an inward bone deposition from the native bone towards the implants. This technology can be exploited to improve the biological functionality of various prosthetic materials in terms of early bone fixation and prevention of aseptic loosening in prosthetic surgery.
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Affiliation(s)
- Arianna B Lovati
- IRCCS Istituto Ortopedico Galeazzi, Cell and Tissue Engineering Laboratory, Milan, Italy
| | - Silvia Lopa
- IRCCS Istituto Ortopedico Galeazzi, Cell and Tissue Engineering Laboratory, Milan, Italy
| | - Marta Bottagisio
- IRCCS Istituto Ortopedico Galeazzi, Laboratory of Clinical Chemistry and Microbiology, Milan, Italy
| | - Giuseppe Talò
- IRCCS Istituto Ortopedico Galeazzi, Cell and Tissue Engineering Laboratory, Milan, Italy
| | - Elena Canciani
- Ground Sections Laboratory, Department of Biomedical, Surgical and Dental Sciences, University of Milan, Milan, Italy
| | - Claudia Dellavia
- Ground Sections Laboratory, Department of Biomedical, Surgical and Dental Sciences, University of Milan, Milan, Italy
| | | | | | | | | | - Matteo Moretti
- IRCCS Istituto Ortopedico Galeazzi, Cell and Tissue Engineering Laboratory, Milan, Italy.,Regenerative Medicine Technologies Lab, Ente Ospedaliero Cantonale, Lugano, Switzerland
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8
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Bertrand AA, Malapati SH, Yamaguchi DT, Lee JC. The Intersection of Mechanotransduction and Regenerative Osteogenic Materials. Adv Healthc Mater 2020; 9:e2000709. [PMID: 32940024 PMCID: PMC7864218 DOI: 10.1002/adhm.202000709] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2020] [Revised: 06/14/2020] [Indexed: 12/23/2022]
Abstract
Mechanical signals play a central role in cell fate determination and differentiation in both physiologic and pathologic circumstances. Such signals may be delivered using materials to generate discrete microenvironments for the purposes of tissue regeneration and have garnered increasing attention in recent years. Unlike the addition of progenitor cells or growth factors, delivery of a microenvironment is particularly attractive in that it may reduce the known untoward consequences of the former two strategies, such as excessive proliferation and potential malignant transformation. Additionally, the ability to spatially modulate the fabrication of materials allows for the creation of multiple microenvironments, particularly attractive for regenerating complex tissues. While many regenerative materials have been developed and tested for augmentation of specific cellular responses, the intersection between cell biology and material interactions have been difficult to dissect due to the complexity of both physical and chemical interactions. Specifically, modulating materials to target individual signaling pathways is an avenue of interdisciplinary research that may lead to a more effective method of optimizing regenerative materials. In this work, the aim is to summarize the major mechanotransduction pathways for osteogenic differentiation and to consolidate the known materials and material properties that activate such pathways.
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Affiliation(s)
- Anthony A. Bertrand
- Division of Plastic and Reconstructive Surgery, University of California Los Angeles David Geffen School of Medicine, Los Angeles, California
| | - Sri Harshini Malapati
- Division of Plastic and Reconstructive Surgery, University of California Los Angeles David Geffen School of Medicine, Los Angeles, California
| | - Dean T. Yamaguchi
- Division of Plastic and Reconstructive Surgery, University of California Los Angeles David Geffen School of Medicine, Los Angeles, California
- Research Service, Greater Los Angeles VA Healthcare System, Los Angeles, California
| | - Justine C. Lee
- Division of Plastic and Reconstructive Surgery, University of California Los Angeles David Geffen School of Medicine, Los Angeles, California
- Research Service, Greater Los Angeles VA Healthcare System, Los Angeles, California
- UCLA Molecular Biology Institute, Los Angeles, California
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9
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Hu C, Ashok D, Nisbet DR, Gautam V. Bioinspired surface modification of orthopedic implants for bone tissue engineering. Biomaterials 2019; 219:119366. [PMID: 31374482 DOI: 10.1016/j.biomaterials.2019.119366] [Citation(s) in RCA: 117] [Impact Index Per Article: 23.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2019] [Revised: 06/27/2019] [Accepted: 07/14/2019] [Indexed: 12/25/2022]
Abstract
Biomedical implants have been widely used in various orthopedic treatments, including total hip arthroplasty, joint arthrodesis, fracture fixation, non-union, dental repair, etc. The modern research and development of orthopedic implants have gradually shifted from traditional mechanical support to a bioactive graft in order to endow them with better osteoinduction and osteoconduction. Inspired by structural and mechanical properties of natural bone, this review provides a panorama of current biological surface modifications for facilitating the interaction between medical implants and bone tissue and gives a future outlook for fabricating the next-generation multifunctional and smart implants by systematically biomimicking the physiological processes involved in formation and functioning of bones.
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Affiliation(s)
- Chao Hu
- Research School of Engineering, Australian National University, ACT, 2601, Australia
| | - Deepu Ashok
- Research School of Engineering, Australian National University, ACT, 2601, Australia
| | - David R Nisbet
- Research School of Engineering, Australian National University, ACT, 2601, Australia
| | - Vini Gautam
- John Curtin School of Medical Research, Australian National University, ACT, 2601, Australia.
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10
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Fraioli R, Neubauer S, Rechenmacher F, Bosch BM, Dashnyam K, Kim JH, Perez RA, Kim HW, Gil FJ, Ginebra MP, Manero JM, Kessler H, Mas-Moruno C. Control of stem cell response and bone growth on biomaterials by fully non-peptidic integrin selective ligands. Biomater Sci 2019; 7:1281-1285. [DOI: 10.1039/c8bm01466c] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Integrin selective peptidomimetics tune stem cell behavior in vitro and improve bone formation in rat calvarial defects.
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11
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Application of TiO2
Nanotubes as a Drug Delivery System for Biomedical Implants: A Critical Overview. ChemistrySelect 2018. [DOI: 10.1002/slct.201801459] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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12
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Bagheri M, Mohammadi M, Steele TW, Ramezani M. Nanomaterial coatings applied on stent surfaces. Nanomedicine (Lond) 2017; 11:1309-26. [PMID: 27111467 DOI: 10.2217/nnm-2015-0007] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
The advent of percutaneous coronary intervention and intravascular stents has revolutionized the field of interventional cardiology. Nonetheless, in-stent restenosis, inflammation and late-stent thrombosis are the major obstacles with currently available stents. In order to enhance the hemocompatibility of stents, advances in the field of nanotechnology allow novel designs of nanoparticles and biomaterials toward localized drug/gene carriers or stent scaffolds. The current review focuses on promising polymers used in the fabrication of newer generations of stents with a short synopsis on atherosclerosis and current commercialized stents, nanotechnology's impact on stent development and recent advancements in stent biomaterials is discussed in context.
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Affiliation(s)
- Mahsa Bagheri
- Shariati Hospital, Mashhad University of Medical Sciences, Mashhad, PO Box 935189-9983, Iran.,Nanotechnology Research Center, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, PO Box 91775-1365, Iran
| | - Marzieh Mohammadi
- Nanotechnology Research Center, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, PO Box 91775-1365, Iran
| | - Terry Wj Steele
- Division of Materials Technology, Materials & Science Engineering, Nanyang Technological University, Singapore
| | - Mohammad Ramezani
- Pharmaceutical Research Center, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, PO Box 91775-1365, Iran
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13
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Ingrassia D, Sladkova M, Palmer M, Xia W, Engqvist H, de Peppo GM. Stem cell-mediated functionalization of titanium implants. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2017; 28:133. [PMID: 28744615 DOI: 10.1007/s10856-017-5944-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/22/2017] [Accepted: 06/27/2017] [Indexed: 06/07/2023]
Abstract
Prosthetic implants are used daily to treat edentulous people and to restore mobility in patients affected by skeletal defects. Titanium (Ti) is the material of choice in prosthetics, because it can form a stable bond with the surrounding bone following implantation-a process known as osseointegration. Yet, full integration of prosthetic implants takes time, and fails in clinical situations characterized by limited bone quantity and/or compromised regenerative capacity, and in at-risk patients. Intense research efforts are thus made to develop new implants that are cost-effective, safe, and suited to every patient in each clinical situation. In this study, we tested the possibility to functionalize Ti implants using stem cells. Human induced pluripotent stem cell-derived mesenchymal progenitor (iPSC-MP) cells were cultured on Ti model disks for 2 weeks in osteogenic conditions. Samples were then treated using four different decellularization methods to wash off the cells and expose the matrix. The functionalized disks were finally sterilized and seeded with fresh human iPSC-MP cells to study the effect of stem cell-mediated surface functionalization on cell behavior. The results show that different decellularization methods produce diverse surface modifications, and that these modifications promote proliferation of human iPSC-MP cells, affect the expression of genes involved in development and differentiation, and stimulate the release of alkaline phosphatase. Cell-mediated functionalization represents an attractive strategy to modify the surface of prosthetic implants with cues of biological relevance, and opens unprecedented possibilities for development of new devices with enhanced therapeutic potential.
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Affiliation(s)
- Deanna Ingrassia
- The New York Stem Cell Foundation Research Institute, 619 West 54th Street, 3rd Floor, New York, NY, 10019, USA
| | - Martina Sladkova
- The New York Stem Cell Foundation Research Institute, 619 West 54th Street, 3rd Floor, New York, NY, 10019, USA
| | - Michael Palmer
- Division of Applied Material Sciences, Uppsala University, Uppsala, SE, Sweden
| | - Wei Xia
- Division of Applied Material Sciences, Uppsala University, Uppsala, SE, Sweden
| | - Håkan Engqvist
- Division of Applied Material Sciences, Uppsala University, Uppsala, SE, Sweden
| | - Giuseppe Maria de Peppo
- The New York Stem Cell Foundation Research Institute, 619 West 54th Street, 3rd Floor, New York, NY, 10019, USA.
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14
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Civantos A, Martínez-Campos E, Ramos V, Elvira C, Gallardo A, Abarrategi A. Titanium Coatings and Surface Modifications: Toward Clinically Useful Bioactive Implants. ACS Biomater Sci Eng 2017; 3:1245-1261. [DOI: 10.1021/acsbiomaterials.6b00604] [Citation(s) in RCA: 182] [Impact Index Per Article: 26.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Ana Civantos
- Tissue
Engineering Group, Institute of Biofunctional Studies, Associated
Unit to the Institute of Polymer Science and Technology (CSIC), Pharmacy
Faculty, Complutense University of Madrid (UCM), Paseo Juan XXIII 1, 28040 Madrid, Spain
- Polymer
Functionalization Group, Institute of Polymer Science and Technology, ICTP-CSIC, Juan de la Cierva, 3, 28006 Madrid, Spain
| | - Enrique Martínez-Campos
- Tissue
Engineering Group, Institute of Biofunctional Studies, Associated
Unit to the Institute of Polymer Science and Technology (CSIC), Pharmacy
Faculty, Complutense University of Madrid (UCM), Paseo Juan XXIII 1, 28040 Madrid, Spain
- Polymer
Functionalization Group, Institute of Polymer Science and Technology, ICTP-CSIC, Juan de la Cierva, 3, 28006 Madrid, Spain
| | - Viviana Ramos
- Tissue
Engineering Group, Institute of Biofunctional Studies, Associated
Unit to the Institute of Polymer Science and Technology (CSIC), Pharmacy
Faculty, Complutense University of Madrid (UCM), Paseo Juan XXIII 1, 28040 Madrid, Spain
- Noricum S.L., San Sebastián
de los Reyes, Av. Fuente Nueva, 14, 28703 Madrid, Spain
| | - Carlos Elvira
- Polymer
Functionalization Group, Institute of Polymer Science and Technology, ICTP-CSIC, Juan de la Cierva, 3, 28006 Madrid, Spain
| | - Alberto Gallardo
- Polymer
Functionalization Group, Institute of Polymer Science and Technology, ICTP-CSIC, Juan de la Cierva, 3, 28006 Madrid, Spain
| | - Ander Abarrategi
- Haematopoietic
Stem Cell Laboratory, The Francis Crick Institute, 1 Midland
Road, NW1 1AT London, U.K
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15
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Pountos I, Panteli M, Lampropoulos A, Jones E, Calori GM, Giannoudis PV. The role of peptides in bone healing and regeneration: a systematic review. BMC Med 2016; 14:103. [PMID: 27400961 PMCID: PMC4940902 DOI: 10.1186/s12916-016-0646-y] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
BACKGROUND Bone tissue engineering and the research surrounding peptides has expanded significantly over the last few decades. Several peptides have been shown to support and stimulate the bone healing response and have been proposed as therapeutic vehicles for clinical use. The aim of this comprehensive review is to present the clinical and experimental studies analysing the potential role of peptides for bone healing and bone regeneration. METHODS A systematic review according to PRISMA guidelines was conducted. Articles presenting peptides capable of exerting an upregulatory effect on osteoprogenitor cells and bone healing were included in the study. RESULTS Based on the available literature, a significant amount of experimental in vitro and in vivo evidence exists. Several peptides were found to upregulate the bone healing response in experimental models and could act as potential candidates for future clinical applications. However, from the available peptides that reached the level of clinical trials, the presented results are limited. CONCLUSION Further research is desirable to shed more light into the processes governing the osteoprogenitor cellular responses. With further advances in the field of biomimetic materials and scaffolds, new treatment modalities for bone repair will emerge.
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Affiliation(s)
- Ippokratis Pountos
- Department of Trauma & Orthopaedics, School of Medicine, University of Leeds, Leeds, UK
| | - Michalis Panteli
- Department of Trauma & Orthopaedics, School of Medicine, University of Leeds, Leeds, UK
| | | | - Elena Jones
- Unit of Musculoskeletal Disease, Leeds Institute of Rheumatic and Musculoskeletal Medicine, St. James University Hospital, University of Leeds, LS9 7TF, Leeds, UK
| | - Giorgio Maria Calori
- Department of Trauma & Orthopaedics, School of Medicine, ISTITUTO ORTOPEDICO GAETANO PINI, Milan, Italy
| | - Peter V Giannoudis
- Department of Trauma & Orthopaedics, School of Medicine, University of Leeds, Leeds, UK. .,NIHR Leeds Biomedical Research Unit, Chapel Allerton Hospital, LS7 4SA Leeds, West Yorkshire, Leeds, UK.
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16
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Mas-Moruno C, Fraioli R, Rechenmacher F, Neubauer S, Kapp TG, Kessler H. αvβ3- or α5β1-Integrin-Selective Peptidomimetics for Surface Coating. Angew Chem Int Ed Engl 2016; 55:7048-67. [PMID: 27258759 DOI: 10.1002/anie.201509782] [Citation(s) in RCA: 84] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2015] [Indexed: 12/21/2022]
Abstract
Engineering biomaterials with integrin-binding activity is a very powerful approach to promote cell adhesion, modulate cell behavior, and induce specific biological responses at the surface level. The aim of this Review is to illustrate the evolution of surface-coating molecules in this field: from peptides and proteins with relatively low integrin-binding activity and receptor selectivity to highly active and selective peptidomimetic ligands. In particular, we will bring into focus the difficult challenge of achieving selectivity between the two closely related integrin subtypes αvβ3 and α5β1. The functionalization of surfaces with such peptidomimetics opens the way for a new generation of highly specific cell-instructive surfaces to dissect the biological role of integrin subtypes and for application in tissue engineering and regenerative medicine.
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Affiliation(s)
- Carlos Mas-Moruno
- Biomaterials, Biomechanics and Tissue Engineering Group, Department of Materials Science and Metallurgical Engineering and Centre for Research in NanoEngineering, Universitat Politècnica de Catalunya (UPC), Diagonal 647, 08028, Barcelona, Spain.
| | - Roberta Fraioli
- Biomaterials, Biomechanics and Tissue Engineering Group, Department of Materials Science and Metallurgical Engineering and Centre for Research in NanoEngineering, Universitat Politècnica de Catalunya (UPC), Diagonal 647, 08028, Barcelona, Spain
| | - Florian Rechenmacher
- Institute for Advanced Study at the Department Chemie und Center of Integrated Protein Science München (CIPSM), Technische Universität München, Lichtenbergstrasse 4, 85748, Garching, Germany
| | - Stefanie Neubauer
- Institute for Advanced Study at the Department Chemie und Center of Integrated Protein Science München (CIPSM), Technische Universität München, Lichtenbergstrasse 4, 85748, Garching, Germany
| | - Tobias G Kapp
- Institute for Advanced Study at the Department Chemie und Center of Integrated Protein Science München (CIPSM), Technische Universität München, Lichtenbergstrasse 4, 85748, Garching, Germany
| | - Horst Kessler
- Institute for Advanced Study at the Department Chemie und Center of Integrated Protein Science München (CIPSM), Technische Universität München, Lichtenbergstrasse 4, 85748, Garching, Germany.
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17
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Mas-Moruno C, Fraioli R, Rechenmacher F, Neubauer S, Kapp TG, Kessler H. αvβ3- oder α5β1-Integrin-selektive Peptidmimetika für die Oberflächenbeschichtung. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201509782] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Carlos Mas-Moruno
- Biomaterials, Biomechanics and Tissue Engineering Group, Department of Materials Science and Metallurgical Engineering and Centre for Research in NanoEngineering; Universitat Politècnica de Catalunya (UPC); Diagonal 647 08028 Barcelona Spanien
| | - Roberta Fraioli
- Biomaterials, Biomechanics and Tissue Engineering Group, Department of Materials Science and Metallurgical Engineering and Centre for Research in NanoEngineering; Universitat Politècnica de Catalunya (UPC); Diagonal 647 08028 Barcelona Spanien
| | - Florian Rechenmacher
- Institute for Advanced Study at the Department Chemie und Center of Integrated Protein Science München (CIPSM); Technische Universität München; Lichtenbergstraße 4 85748 Garching Deutschland
| | - Stefanie Neubauer
- Institute for Advanced Study at the Department Chemie und Center of Integrated Protein Science München (CIPSM); Technische Universität München; Lichtenbergstraße 4 85748 Garching Deutschland
| | - Tobias G. Kapp
- Institute for Advanced Study at the Department Chemie und Center of Integrated Protein Science München (CIPSM); Technische Universität München; Lichtenbergstraße 4 85748 Garching Deutschland
| | - Horst Kessler
- Institute for Advanced Study at the Department Chemie und Center of Integrated Protein Science München (CIPSM); Technische Universität München; Lichtenbergstraße 4 85748 Garching Deutschland
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18
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Luo K, Mei T, Li Z, Deng M, Zhang Z, Hou T, Dong S, Xie Z, Xu J, Luo F. A High-Adhesive Lysine-Cyclic RGD Peptide Designed for Selective Cell Retention Technology. Tissue Eng Part C Methods 2016; 22:585-95. [PMID: 27154386 DOI: 10.1089/ten.tec.2015.0517] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023] Open
Affiliation(s)
- Keyu Luo
- Department of Orthopedics, Southwest Hospital, National & Regional United Engineering Laboratory of Tissue Engineering, The Third Military Medical University, Chongqing, China
- Center of Regenerative and Reconstructive Engineering Technology in Chongqing City, Chongqing, China
- Tissue Engineering Laboratory of Chongqing City, Chongqing, China
| | - Tieniu Mei
- Department of Orthopedics, Southwest Hospital, National & Regional United Engineering Laboratory of Tissue Engineering, The Third Military Medical University, Chongqing, China
- Center of Regenerative and Reconstructive Engineering Technology in Chongqing City, Chongqing, China
- Tissue Engineering Laboratory of Chongqing City, Chongqing, China
| | - Zhiqiang Li
- Department of Orthopedics, Southwest Hospital, National & Regional United Engineering Laboratory of Tissue Engineering, The Third Military Medical University, Chongqing, China
- Center of Regenerative and Reconstructive Engineering Technology in Chongqing City, Chongqing, China
- Tissue Engineering Laboratory of Chongqing City, Chongqing, China
| | - Moyuan Deng
- Department of Orthopedics, Southwest Hospital, National & Regional United Engineering Laboratory of Tissue Engineering, The Third Military Medical University, Chongqing, China
- Center of Regenerative and Reconstructive Engineering Technology in Chongqing City, Chongqing, China
- Tissue Engineering Laboratory of Chongqing City, Chongqing, China
| | - Zehua Zhang
- Department of Orthopedics, Southwest Hospital, National & Regional United Engineering Laboratory of Tissue Engineering, The Third Military Medical University, Chongqing, China
- Center of Regenerative and Reconstructive Engineering Technology in Chongqing City, Chongqing, China
- Tissue Engineering Laboratory of Chongqing City, Chongqing, China
| | - Tianyong Hou
- Department of Orthopedics, Southwest Hospital, National & Regional United Engineering Laboratory of Tissue Engineering, The Third Military Medical University, Chongqing, China
- Center of Regenerative and Reconstructive Engineering Technology in Chongqing City, Chongqing, China
- Tissue Engineering Laboratory of Chongqing City, Chongqing, China
| | - Shiwu Dong
- Department of Orthopedics, Southwest Hospital, National & Regional United Engineering Laboratory of Tissue Engineering, The Third Military Medical University, Chongqing, China
- Department of Biomedical Materials Science, College of Biomedical Engineering, The Third Military Medical University, Chongqing, China
| | - Zhao Xie
- Department of Orthopedics, Southwest Hospital, National & Regional United Engineering Laboratory of Tissue Engineering, The Third Military Medical University, Chongqing, China
- Center of Regenerative and Reconstructive Engineering Technology in Chongqing City, Chongqing, China
- Tissue Engineering Laboratory of Chongqing City, Chongqing, China
| | - Jianzhong Xu
- Department of Orthopedics, Southwest Hospital, National & Regional United Engineering Laboratory of Tissue Engineering, The Third Military Medical University, Chongqing, China
- Center of Regenerative and Reconstructive Engineering Technology in Chongqing City, Chongqing, China
- Tissue Engineering Laboratory of Chongqing City, Chongqing, China
| | - Fei Luo
- Department of Orthopedics, Southwest Hospital, National & Regional United Engineering Laboratory of Tissue Engineering, The Third Military Medical University, Chongqing, China
- Center of Regenerative and Reconstructive Engineering Technology in Chongqing City, Chongqing, China
- Tissue Engineering Laboratory of Chongqing City, Chongqing, China
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19
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Yin X, Li J, Chen T, Mouraret S, Dhamdhere G, Brunski JB, Zou S, Helms JA. Rescuing failed oral implants via Wnt activation. J Clin Periodontol 2016; 43:180-92. [PMID: 26718012 DOI: 10.1111/jcpe.12503] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/24/2015] [Indexed: 02/05/2023]
Abstract
AIM Implant osseointegration is not always guaranteed and once fibrous encapsulation occurs clinicians have few options other than implant removal. Our goal was to test whether a WNT protein therapeutic could rescue such failed implants. MATERIAL AND METHODS Titanium implants were placed in over-sized murine oral osteotomies. A lack of primary stability was verified by mechanical testing. Interfacial strains were estimated by finite element modelling and histology coupled with histomorphometry confirmed the lack of peri-implant bone. After fibrous encapsulation was established peri-implant injections of a liposomal formulation of WNT3A protein (L-WNT3A) or liposomal PBS (L-PBS) were then initiated. Quantitative assays were employed to analyse the effects of L-WNT3A treatment. RESULTS Implants in gap-type interfaces exhibited high interfacial strains and no primary stability. After verification of implant failure, L-WNT3A or L-PBS injections were initiated. L-WNT3A induced a rapid, significant increase in Wnt responsiveness in the peri-implant environment, cell proliferation and osteogenic protein expression. The amount of peri-implant bone and bone in contact with the implant were significantly higher in L-WNT3A cases. CONCLUSIONS These data demonstrate L-WNT3A can induce peri-implant bone formation even in cases where fibrous encapsulation predominates.
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Affiliation(s)
- Xing Yin
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China.,Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford School of Medicine, Stanford, CA, USA
| | - Jingtao Li
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China.,Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford School of Medicine, Stanford, CA, USA
| | - Tao Chen
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China.,Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford School of Medicine, Stanford, CA, USA
| | - Sylvain Mouraret
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford School of Medicine, Stanford, CA, USA
| | - Girija Dhamdhere
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford School of Medicine, Stanford, CA, USA
| | - John B Brunski
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford School of Medicine, Stanford, CA, USA
| | - Shujuan Zou
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Jill A Helms
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford School of Medicine, Stanford, CA, USA
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20
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Jing W, Zhang M, Jin L, Zhao J, Gao Q, Ren M, Fan Q. Assessment of osteoinduction using a porous hydroxyapatite coating prepared by micro-arc oxidation on a new titanium alloy. Int J Surg 2015; 24:51-6. [PMID: 26306772 DOI: 10.1016/j.ijsu.2015.08.030] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2015] [Revised: 07/16/2015] [Accepted: 08/05/2015] [Indexed: 11/19/2022]
Abstract
Surface modification and material improvement is now an important way to improve the osseointegration between bone and uncemented prothesis. The purpose of this study was to investigate the bone ingrowth potential of porous hydroxyapatite (HA) coatings prepared by micro-arc oxidation (MAO) on Ti-3Zr-2Sn-3Mo-25Nb, a new titanium alloy. HA-coated specimens were implanted in the left proximal femoral medullary canal of beagles for 4, 12, and 24 weeks, and uncoated specimens were implanted in the right as a control. The surface morphology and phase composition were investigated with environmental scanning electron microscopy and X-ray diffractometry. The bone ingrowth was assessed by histomorphometry. A pull-out test was performed to assess the mechanical performance of the bone-implant interface. A porous coating was well prepared on the new titanium alloy by using the MAO method. The bone-to-implant contact was significantly higher for the HA-coated group compared to that in the uncoated group. Mechanical tests showed that the HA-coated group had significantly higher maximum force at the bone-implant interface compared to the uncoated specimens. MAO is a suitable coating approach for this new titanium alloy. The HA coating prepared by this approach can significantly promote bone ingrowth and the mechanical performance of the bone-implant interface.
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Affiliation(s)
- Wensen Jing
- Tangdu Hospital, The Fourth Military Medical University, Xi'an 710038, Shanxi, China
| | - Minghua Zhang
- Tangdu Hospital, The Fourth Military Medical University, Xi'an 710038, Shanxi, China
| | - Lei Jin
- Tangdu Hospital, The Fourth Military Medical University, Xi'an 710038, Shanxi, China
| | - Jian Zhao
- Tangdu Hospital, The Fourth Military Medical University, Xi'an 710038, Shanxi, China
| | - Qing Gao
- Tangdu Hospital, The Fourth Military Medical University, Xi'an 710038, Shanxi, China
| | - Min Ren
- Research Institute for Strength of Metals, Xi'an Jiaotong University, Xi'an 710049, Shanxi, China
| | - Qingyu Fan
- Tangdu Hospital, The Fourth Military Medical University, Xi'an 710038, Shanxi, China.
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21
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Skripitz R, Kurth A, Roth A. [Supportive drugs for improved implant healing]. DER ORTHOPADE 2015; 44:703-709. [PMID: 26160658 DOI: 10.1007/s00132-015-3136-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
BACKGROUND Improvement of implant healing in orthopedic and trauma surgery serves to improve the life expectancy of the implant. Good primary stability by clamping is a prerequisite for secondary stability and for the actual integration and healing of the implant. RESULTS Possible causes of implant loosening are abrasive particles, which arrive at non-integrated implants at the unsealed prosthesis-bone interface and provoke a macrophage-mediated foreign body reaction, resulting in periprosthetic osteolysis. Numerous animal studies have already described the use of bisphosphonates to inhibit osteolysis induced by abrasion and secondary instability. In patients with total knee arthroplasty, a decrease in prosthetic migration under the influence of bisphosphonates could be shown. The stimulation of bone formation around the implants and the resulting implant healing was demonstrated both in animal experiments for bone morphogenetic proteins (BMP) and in case reports for intermittent parathyroid hormone administration. CONCLUSION By using supportive drugs, it is possible to achieve an improvement in the osseointegration of implants; thus, more rapid secondary stability and load-bearing are expected.
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Affiliation(s)
- R Skripitz
- Orthopädische Klinik und Poliklinik, Universitätsmedizin Rostock, Doberaner Str. 142, 18057, Rostock, Deutschland.
| | - A Kurth
- Themistocles Gluck Hospital, Ratingen, Deutschland
| | - A Roth
- Bereich Endoprothetik/Orthopädie, Klinik für Orthopädie, Unfallchirurgie und Plastische Chirurgie, Universitätsklinik Leipzig AöR, Leipzig, Deutschland
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22
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Abstract
Since Brånemark discovered the favorable effects of titanium in bone healing in 1965, titanium has emerged as the gold standard bulk material for present-time dental implantology. In the course of years researchers aimed for improvement of the implants performance in bone even at compromised implant sites and multiple factors were investigated influencing osseointegration. This review summarizes and clarifies the four factors that are currently recognized being relevant to influence the tissue-implant contact ratio: bulk materials and coatings, topography, surface energy, and biofunctionalization. The macrodesigns of bulk materials (e.g., titanium, zirconium, stainless steel, tantalum, and magnesium) provide the mechanical stability and their influence on bone cells can be additionally improved by surface treatment with various materials (calcium phosphates, strontium, bioglasses, diamond-like carbon, and diamond). Surface topography can be modified via different techniques to increase the bone-implant contact, for example, plasma-spraying, grit-blasting, acid-etching, and microarc oxidation. Surface energy (e.g., wettability and polarity) showed a strong effect on cell behavior and cell adhesion. Functionalization with bioactive molecules (via physisorption, covalent binding, or carrier systems) targets enhanced osseointegration. Despite the satisfying clinical results of presently used dental implant materials, further research on innovative implant surfaces is inevitable to pursuit perfection in soft and hard tissue performance.
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23
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Goriainov V, Cook R, M. Latham J, G. Dunlop D, Oreffo RO. Bone and metal: an orthopaedic perspective on osseointegration of metals. Acta Biomater 2014; 10:4043-57. [PMID: 24932769 DOI: 10.1016/j.actbio.2014.06.004] [Citation(s) in RCA: 124] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2014] [Revised: 06/02/2014] [Accepted: 06/04/2014] [Indexed: 12/12/2022]
Abstract
The area of implant osseointegration is of major importance, given the predicted significant rise in the number of orthopaedic procedures and an increasingly ageing population. Osseointegration is a complex process involving a number of distinct mechanisms affected by the implant bulk properties and surface characteristics. Our understanding and ability to modify these mechanisms through alterations in implant design is continuously expanding. The following review considers the main aspects of material and surface alterations in metal implants, and the extent of their subsequent influence on osseointegration. Clinically, osseointegration results in asymptomatic stable durable fixation of orthopaedic implants. The complexity of achieving this outcome through incorporation and balance of contributory factors is highlighted through a clinical case report.
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24
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Harrison N, Field JR, Quondamatteo F, Curtin W, McHugh PE, Mc Donnell P. Preclinical trial of a novel surface architecture for improved primary fixation of cementless orthopaedic implants. Clin Biomech (Bristol, Avon) 2014; 29:861-8. [PMID: 25156456 DOI: 10.1016/j.clinbiomech.2014.07.007] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/02/2014] [Revised: 07/25/2014] [Accepted: 07/30/2014] [Indexed: 02/07/2023]
Abstract
BACKGROUND A new surface architecture for cementless orthopaedic implants (OsteoAnchor), which incorporates a multitude of tiny anchor features for enhancing primary fixation, was tested in an ovine hemi-arthroplasty pilot study. METHODS Test animals were implanted with a hip stem component incorporating the OsteoAnchor surface architecture produced using additive layer manufacturing and control animals were implanted with stems containing a standard plasma sprayed titanium coating. FINDINGS Intra-operative surgeon feedback indicated that superior primary fixation was achieved for the OsteoAnchor stems and rapid return to normal gait and load bearing was observed post-operation. Following a 16-week recovery time, histological evaluation of the excised femurs revealed in-growth of healthy bone into the porous structure of the OsteoAnchor stems. Bone in-growth was not achieved for the plasma sprayed stems. INTERPRETATION These results indicate the potential for the OsteoAnchor surface architecture to enhance both the initial stability and long term lifetime of cementless orthopaedic implants.
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Affiliation(s)
- Noel Harrison
- Biomechanics Research Centre (BMEC), Biomedical Engineering, College of Engineering, National University of Ireland, Galway, Ireland
| | - John R Field
- Centre for Orthopaedic and Trauma Research (COTR), University of Adelaide, South Australia, Australia
| | - Fabio Quondamatteo
- Skin and ECM Research Group, Anatomy, National University of Ireland, Galway, Ireland
| | | | - Peter E McHugh
- Biomechanics Research Centre (BMEC), Biomedical Engineering, College of Engineering, National University of Ireland, Galway, Ireland
| | - Pat Mc Donnell
- Biomechanics Research Centre (BMEC), Biomedical Engineering, College of Engineering, National University of Ireland, Galway, Ireland.
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Mas-Moruno C, Fraioli R, Albericio F, Manero JM, Gil FJ. Novel peptide-based platform for the dual presentation of biologically active peptide motifs on biomaterials. ACS APPLIED MATERIALS & INTERFACES 2014; 6:6525-6536. [PMID: 24673628 DOI: 10.1021/am5001213] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Biofunctionalization of metallic materials with cell adhesive molecules derived from the extracellular matrix is a feasible approach to improve cell-material interactions and enhance the biointegration of implant materials (e.g., osseointegration of bone implants). However, classical biomimetic strategies may prove insufficient to elicit complex and multiple biological signals required in the processes of tissue regeneration. Thus, newer strategies are focusing on installing multifunctionality on biomaterials. In this work, we introduce a novel peptide-based divalent platform with the capacity to simultaneously present distinct bioactive peptide motifs in a chemically controlled fashion. As a proof of concept, the integrin-binding sequences RGD and PHSRN were selected and introduced in the platform. The biofunctionalization of titanium with this platform showed a positive trend towards increased numbers of cell attachment, and statistically higher values of spreading and proliferation of osteoblast-like cells compared to control noncoated samples. Moreover, it displayed statistically comparable or improved cell responses compared to samples coated with the single peptides or with an equimolar mixture of the two motifs. Osteoblast-like cells produced higher levels of alkaline phosphatase on surfaces functionalized with the platform than on control titanium; however, these values were not statistically significant. This study demonstrates that these peptidic structures are versatile tools to convey multiple biofunctionality to biomaterials in a chemically defined manner.
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Affiliation(s)
- Carlos Mas-Moruno
- Biomaterials, Biomechanics and Tissue Engineering Group, Department of Materials Science and Metallurgical Engineering, Technical University of Catalonia (UPC) , ETSEIB, Avenida Diagonal 647, 08028 Barcelona, Spain
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Förster Y, Rentsch C, Schneiders W, Bernhardt R, Simon JC, Worch H, Rammelt S. Surface modification of implants in long bone. BIOMATTER 2014; 2:149-57. [PMID: 23507866 PMCID: PMC3549868 DOI: 10.4161/biom.21563] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Coatings of orthopedic implants are investigated to improve the osteoinductive and osteoconductive properties of the implant surfaces and thus to enhance periimplant bone formation. By applying coatings that mimic the extracellular matrix a favorable environment for osteoblasts, osteoclasts and their progenitor cells is provided to promote early and strong fixation of implants. It is known that the early bone ongrowth increases primary implant fixation and reduces the risk of implant failure. This review presents an overview of coating titanium and hydroxyapatite implants with components of the extracellular matrix like collagen type I, chondroitin sulfate and RGD peptide in different small and large animal models. The influence of these components on cells, the inflammation process, new bone formation and bone/implant contact is summarized.
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Affiliation(s)
- Yvonne Förster
- Department of Trauma and Reconstructive Surgery, Center for Translational Bone, Joint and Soft Tissue Research, Dresden University Hospital Carl Gustav Carus, Dresden, Germany.
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Liu X, Zhou X, Li S, Lai R, Zhou Z, Zhang Y, Zhou L. Effects of titania nanotubes with or without bovine serum albumin loaded on human gingival fibroblasts. Int J Nanomedicine 2014; 9:1185-98. [PMID: 24623977 PMCID: PMC3949701 DOI: 10.2147/ijn.s55514] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Modifying the surface of the transmucosal area is a key research area because this process positively affects the three functions of implants: attachment to soft tissue, inhibiting bacterial biofilm adhesion, and the preservation of the crestal bone. To exploit the potential of titania nanotube arrays (TNTs) with or without using bovine serum albumin (BSA) to modify the surface of a dental implant in contact with the transmucosal area, BSA was loaded into TNTs that were fabricated by anodizing Ti sheets; the physical characteristics of these arrays, including their morphology, chemical composition, surface roughness, contact angle, and surface free energy (SFE), were assessed. The effect of Ti surfaces with TNTs or TNTs-BSA on human gingival fibroblasts (HGFs) was determined by analyzing cell morphology, early adhesion, proliferation, type I collagen (COL-1) gene expression, and the extracellular secretion of COL-1. The results indicate that early HGF adhesion and spreading behavior is positively correlated with surface characteristics, including hydrophilicity, SFE, and surface roughness. Additionally, TNT surfaces not only promoted early HGF adhesion, but also promoted COL-1 secretion. BSA-loaded TNT surfaces promoted early HGF adhesion, while suppressing late proliferation and COL-1 secretion. Therefore, TNT-modified smooth surfaces are expected to be applicable for uses involving the transmucosal area. Further study is required to determine whether BSA-loaded TNT surfaces actually affect closed loop formation of connective tissue because BSA coating actions in vivo are very rapid.
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Affiliation(s)
- Xiangning Liu
- The First Affiliated Hospital of Jinan University, Guangzhou, People's Republic of China
| | - Xiaosong Zhou
- Chemistry Science and Technology School, Zhanjiang Normal University, Zhanjiang, People's Republic of China
| | - Shaobing Li
- Guangdong Provincial Stomatological Hospital, Southern Medical University, Guangzhou, People's Republic of China
| | - Renfa Lai
- The First Affiliated Hospital of Jinan University, Guangzhou, People's Republic of China
| | - Zhiying Zhou
- The First Affiliated Hospital of Jinan University, Guangzhou, People's Republic of China
| | - Ye Zhang
- The First Affiliated Hospital of Jinan University, Guangzhou, People's Republic of China
| | - Lei Zhou
- Guangdong Provincial Stomatological Hospital, Southern Medical University, Guangzhou, People's Republic of China
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Feric N, Cheng CCH, Goh MC, Dudnyk V, Di Tizio V, Radisic M. Angiopoietin-1 peptide QHREDGS promotes osteoblast differentiation, bone matrix deposition and mineralization on biomedical materials. Biomater Sci 2014; 2:1384-1398. [PMID: 25485104 DOI: 10.1039/c4bm00073k] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Bone loss occurs as a consequence of a variety of diseases as well as from traumatic injuries, and often requires therapeutic intervention. Strategies for repairing and replacing damaged and/or lost bone tissue include the use of biomaterials and medical implant devices with and without osteoinductive coatings. The soluble growth factor angiopoietin-1 (Ang-1) has been found to promote cell adhesion and survival in a range of cell types including cardiac myocytes, endothelial cells and fibroblasts through an integrin-dependent mechanism. Furthermore, the short sequence QHREDGS has been identified as the integrin-binding sequence of Ang-1 and as a synthetic peptide has been found to possess similar integrin-dependent effects as Ang-1 in the aforementioned cell types. Integrins have been implicated in osteoblast differentiation and bone mineralization, processes critical to bone regeneration. By binding integrins on the osteoblast surface, QHREDGS could promote cell survival and adhesion, as well as conceivably osteoblast differentiation and bone mineralization. Here we immobilized QHREDGS onto polyacrylate (PA)-coated titanium (Ti) plates and polyethylene glycol (PEG) hydrogels. The osteoblast differentiation marker, alkaline phosphatase, peaked in activity 4-12 days earlier on the QHREDGS-immobilized PA-coated Ti plates than on the unimmobilized, DGQESHR (scrambled)- and RGDS-immobilized surfaces. Significantly more bone matrix was deposited on the QHREDGS-immobilized Ti surface than on the other surfaces as determined by atomic force microscopy. The QHREDGS-immobilized hydrogels also had a significantly higher mineral-to-matrix (M/M) ratio determined by Fourier transform infrared spectroscopy. Alizarin Red S and von Kossa staining and quantification, and environmental scanning electron microscopy showed that while both the QHREDGS- and RGDS-immobilized surfaces had extensive mineralization relative to the unimmobilized and DGQESHR-immobilized surfaces, the mineralization was more considerable on the QHREDGS-immobilized surface, both with and without the induction of osteoblast differentiation. Finally, treatment of cell monolayers with soluble QHREDGS was demonstrated to upregulate osteogenic gene expression. Taken together, these results demonstrate that the QHREDGS peptide is osteoinductive, inducing osteoblast differentiation, bone matrix deposition and mineralization.
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Affiliation(s)
- Nicole Feric
- Institute of Biomaterials and Biomedical Engineering, University of Toronto, Toronto, Ontario, M5S 3G9 Canada
| | - Calvin C H Cheng
- Department of Chemistry, University of Toronto, Toronto, Ontario M5S 3H6, Canada
| | - M Cynthia Goh
- Department of Chemistry, University of Toronto, Toronto, Ontario M5S 3H6, Canada ; Institute for Optical Sciences, University of Toronto, Toronto, Ontario M5S 1A7, Canada
| | | | - Val Di Tizio
- Department of Chemical Engineering and Applied Chemistry, University of Toronto, Toronto, Ontario M5S 3E5, Canada
| | - Milica Radisic
- Institute of Biomaterials and Biomedical Engineering, University of Toronto, Toronto, Ontario, M5S 3G9 Canada ; Department of Chemical Engineering and Applied Chemistry, University of Toronto, Toronto, Ontario M5S 3E5, Canada
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Mick E, Markhoff J, Mitrovic A, Jonitz A, Bader R. New Coating Technique of Ceramic Implants with Different Glass Solder Matrices for Improved Osseointegration-Mechanical Investigations. MATERIALS 2013; 6:4001-4010. [PMID: 28788314 PMCID: PMC5452662 DOI: 10.3390/ma6094001] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/09/2013] [Revised: 08/28/2013] [Accepted: 09/04/2013] [Indexed: 11/16/2022]
Abstract
Ceramics are a very popular material in dental implant technology due to their tribological properties, their biocompatibility and their esthetic appearance. However, their natural surface structure lacks the ability of proper osseointegration, which constitutes a crucial process for the stability and, thus, the functionality of a bone implant. We investigated the application of a glass solder matrix in three configurations—consisting mainly of SiO2, Al2O3, K2O and Na2O to TZP-A ceramic specimens. The corresponding adhesive strength and surface roughness of the coatings on ceramic specimens have been analyzed. Thereby, high adhesive strength (70.3 ± 7.9 MPa) was found for the three different coatings. The obtained roughness (Rz) amounted to 18.24 ± 2.48 µm in average, with significant differences between the glass solder configurations. Furthermore, one configuration was also tested after additional etching which did not lead to significant increase of surface roughness (19.37 ± 1.04 µm) or adhesive strength (57.2 ± 5.8 MPa). In conclusion, coating with glass solder matrix seems to be a promising surface modification technique that may enable direct insertion of ceramic implants in dental and orthopaedic surgery.
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Affiliation(s)
- Enrico Mick
- Department of Orthopaedics, Research Lab for Biomechanics and Implant Technology, University Medicine Rostock, Doberaner Strasse 142, Rostock 18057, Germany.
| | - Jana Markhoff
- Department of Orthopaedics, Research Lab for Biomechanics and Implant Technology, University Medicine Rostock, Doberaner Strasse 142, Rostock 18057, Germany.
| | - Aurica Mitrovic
- ZM Praezisionsdentaltechnik GmbH, Breite Strasse 16, Rostock 18055, Germany.
| | - Anika Jonitz
- Department of Orthopaedics, Research Lab for Biomechanics and Implant Technology, University Medicine Rostock, Doberaner Strasse 142, Rostock 18057, Germany.
| | - Rainer Bader
- Department of Orthopaedics, Research Lab for Biomechanics and Implant Technology, University Medicine Rostock, Doberaner Strasse 142, Rostock 18057, Germany.
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Hassert R, Beck-Sickinger AG. Tuning peptide affinity for biofunctionalized surfaces. Eur J Pharm Biopharm 2013; 85:69-77. [DOI: 10.1016/j.ejpb.2013.02.006] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2012] [Revised: 02/05/2013] [Accepted: 02/12/2013] [Indexed: 01/16/2023]
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Rechenmacher F, Neubauer S, Mas-Moruno C, Dorfner PM, Polleux J, Guasch J, Conings B, Boyen HG, Bochen A, Sobahi TR, Burgkart R, Spatz JP, Fässler R, Kessler H. A Molecular Toolkit for the Functionalization of Titanium-Based Biomaterials That Selectively Control Integrin-Mediated Cell Adhesion. Chemistry 2013; 19:9218-23. [DOI: 10.1002/chem.201301478] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2013] [Indexed: 12/13/2022]
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Jäger M, Böge C, Janissen R, Rohrbeck D, Hülsen T, Lensing-Höhn S, Krauspe R, Herten M. Osteoblastic potency of bone marrow cells cultivated on functionalized biometals with cyclic RGD-peptide. J Biomed Mater Res A 2013; 101:2905-14. [DOI: 10.1002/jbm.a.34590] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2012] [Accepted: 01/03/2013] [Indexed: 11/07/2022]
Affiliation(s)
| | - C. Böge
- Orthopaedic Department; University of Duisburg-Essen; Germany
| | | | - D. Rohrbeck
- Institute of Molecular Physical Chemistry; Heinrich-Heine University Düsseldorf; Germany
| | - T. Hülsen
- Orthopaedic Department; University of Duisburg-Essen; Germany
| | - S. Lensing-Höhn
- Orthopaedic Department; Heinrich-Heine-University Medical School; Düsseldorf; Germany
| | - R. Krauspe
- Orthopaedic Department; Heinrich-Heine-University Medical School; Düsseldorf; Germany
| | - M. Herten
- Orthopaedic Department; Heinrich-Heine-University Medical School; Düsseldorf; Germany
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Abstract
Despite the potential for growth factor delivery strategies to promote orthopedic implant healing, there is a need for growth factor delivery methods that are controllable and amenable to clinical translation. We have developed a modular bone growth factor, herein termed “modular bone morphogenetic peptide (mBMP)”, which was designed to efficiently bind to the surface of orthopedic implants and also stimulate new bone formation. The purpose of this study was to coat a hydroxyapatite-titanium implant with mBMP and evaluate bone healing across a bone-implant gap in the sheep femoral condyle. The mBMP molecules efficiently bound to a hydroxyapatite-titanium implant and 64% of the initially bound mBMP molecules were released in a sustained manner over 28 days. The results demonstrated that the mBMP-coated implant group had significantly more mineralized bone filling in the implant-bone gap than the control group in C-arm computed tomography (DynaCT) scanning (25% more), histological (35% more) and microradiographic images (50% more). Push-out stiffness of the mBMP group was nearly 40% greater than that of control group whereas peak force did not show a significant difference. The results of this study demonstrated that mBMP coated on a hydroxyapatite-titanium implant stimulates new bone formation and may be useful to improve implant fixation in total joint arthroplasty applications.
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Thoma DS, Martin IS, Mühlemann S, Jung RE. Systematic review of pre-clinical models assessing implant integration in locally compromised sites and/or systemically compromised animals. J Clin Periodontol 2012; 39 Suppl 12:37-62. [PMID: 22533946 DOI: 10.1111/j.1600-051x.2011.01833.x] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
OBJECTIVE The aim was to systematically search the dental literature for pre-clinical models assessing implant integration in locally compromised sites (part 1) and systemically compromised animals (part 2), and to evaluate the quality of reporting of included publications. METHODS A Medline search (1966-2011) was performed, complimented by additional hand searching. The quality of reporting of the included publications was evaluated using the 20 items of the ARRIVE (Animals in Research In Vivo Experiments) guidelines. RESULTS One-hundred and seventy-six (part 1; mean ARRIVE score = 15.6 ± 2.4) and 104 (part 2; 16.2 ± 1.9) studies met the inclusion criteria. The overall mean score for all included studies amounted to 15.8 ± 2.2. Housing (38.3%), allocation of animals (37.9%), numbers analysed (50%) and adverse events (51.4%) of the ARRIVE guidelines were the least reported. Statistically significant differences in mean ARRIVE scores were found depending on the publication date (p < 0.05), with the highest score of 16.7 ± 1.6 for studies published within the last 2 years. CONCLUSIONS A large number of studies met the inclusion criteria. The ARRIVE scores revealed heterogeneity and missing information for selected items in more than 50% of the publications. The quality of reporting shifted towards better-reported pre-clinical trials within recent years.
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Affiliation(s)
- Daniel S Thoma
- Clinic of Fixed and Removable Prosthodontics and Dental Material Science, University of Zurich, Zurich, Switzerland.
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Liu Q, Limthongkul W, Sidhu G, Zhang J, Vaccaro A, Shenck R, Hickok N, Shapiro I, Freeman T. Covalent attachment of P15 peptide to titanium surfaces enhances cell attachment, spreading, and osteogenic gene expression. J Orthop Res 2012; 30:1626-33. [PMID: 22504956 DOI: 10.1002/jor.22116] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/20/2011] [Accepted: 03/15/2012] [Indexed: 02/04/2023]
Abstract
P15, a synthetic 15 amino acid peptide, mimics the cell-binding domain within the alpha-1 chain of human collagen is being tested in clinical trials to determine if it enhances bone formation in spinal fusions. We hypothesize that covalent attachment of P15 to titanium implants may also serve to promote osseointegration. To test this hypothesis, we measured osteoblast and mesenchymal cell adhesion, proliferation, and maturation on P15 tethered to a titanium (Ti-P15) surface. P15 peptide was covalently bonded to titanium alloy surfaces and incubated with osteoblast like cells. Cell toxicity, adhesion, spreading, and differentiation was then evaluated. Real-time quantitative PCR, Western blot analysis, and fluorescent immunohistochemistry was performed to measure osteoblast gene expression and differentiation. There was no evidence of toxicity. Significant increases in early cell attachment, spreading, and proliferation were observed on the Ti-P15 surface. Increased filapodial attachments, α(2) integrin expression, and phosphorylated focal adhesion kinase immunostaining indicated activation of integrin signaling pathways. qRT-PCR analysis indicated there was significant increase in osteogenic differentiation markers in cells grown on Ti-P15 compared to control-Ti. Western blotting confirmed these findings. Surface modification of titanium with P15 significantly increased cell attachment, spreading, osteogenic gene expression, and differentiation. Results of this study suggest that Ti-P15 has the potential to safely enhance bone formation and promote osseointegration of titanium implants.
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Affiliation(s)
- Qinyi Liu
- Department of Orthopedics, The Second Hospital of Jilin University, Chang Chun, Jilin, China
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Chien CY, Liu TY, Kuo WH, Wang MJ, Tsai WB. Dopamine-assisted immobilization of hydroxyapatite nanoparticles and RGD peptides to improve the osteoconductivity of titanium. J Biomed Mater Res A 2012; 101:740-7. [DOI: 10.1002/jbm.a.34376] [Citation(s) in RCA: 66] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2012] [Revised: 05/23/2012] [Accepted: 07/12/2012] [Indexed: 12/16/2022]
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Mas-Moruno C, Dorfner PM, Manzenrieder F, Neubauer S, Reuning U, Burgkart R, Kessler H. Behavior of primary human osteoblasts on trimmed and sandblasted Ti6Al4V surfaces functionalized with integrin αvβ3-selective cyclic RGD peptides. J Biomed Mater Res A 2012; 101:87-97. [DOI: 10.1002/jbm.a.34303] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2012] [Revised: 05/10/2012] [Accepted: 05/25/2012] [Indexed: 02/05/2023]
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Surface Engineering for Bone Implants: A Trend from Passive to Active Surfaces. COATINGS 2012. [DOI: 10.3390/coatings2030095] [Citation(s) in RCA: 89] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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Meyers SR, Grinstaff MW. Biocompatible and bioactive surface modifications for prolonged in vivo efficacy. Chem Rev 2012; 112:1615-32. [PMID: 22007787 PMCID: PMC3878818 DOI: 10.1021/cr2000916] [Citation(s) in RCA: 165] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Steven R. Meyers
- Departments of Biomedical Engineering and Chemistry, Boston University, Boston, MA 02215, USA
| | - Mark W. Grinstaff
- Departments of Biomedical Engineering and Chemistry, Boston University, Boston, MA 02215, USA
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Bertollo N, Matsubara M, Shinoda T, Chen D, Kumar M, Walsh WR. Effect of surgical fit on integration of cancellous bone and implant cortical bone shear strength for a porous titanium. J Arthroplasty 2011; 26:1000-7. [PMID: 21316915 DOI: 10.1016/j.arth.2010.12.007] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/14/2010] [Accepted: 12/05/2010] [Indexed: 02/01/2023] Open
Abstract
Porous scaffold dowels of Ti(6)Al(4)V were prepared and implanted into cancellous and cortical bone sites in adult sheep. Cancellous implants were examined under gap, line-to-line, and press-fit conditions, whereas line-to-line implantation was used in cortical sites. Cortical shear strength increased significantly with time and reached 26.1 ± 8.6 MPa at 12 weeks, accompanied by a concomitant increase in bone integration and remodeling. In cancellous sites, bone integration was well established at 4 and 12 weeks under conditions of press-fit and line-to-line match between implant and surgical defect. New bone growth was also found in the gap conditions, although to a lesser extent. These findings suggest that the porous Ti(6)Al(4)V could prove an effective scaffold material for uncemented fixation in cortical and cancellous sites.
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Affiliation(s)
- Nicky Bertollo
- Surgical and Orthopaedic Research Laboratories-University of New South Wales, Sydney, Australia
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Bone healing of commercial oral implants with RGD immobilization through electrodeposited poly(ethylene glycol) in rabbit cancellous bone. Acta Biomater 2011; 7:3222-9. [PMID: 21549863 DOI: 10.1016/j.actbio.2011.04.015] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2011] [Revised: 02/22/2011] [Accepted: 04/19/2011] [Indexed: 11/23/2022]
Abstract
Immobilization of RGD peptides on titanium (Ti) surfaces enhances implant bone healing by promoting early osteoblastic cell attachment and subsequent differentiation by facilitating integrin binding. Our previous studies have demonstrated the efficacy of RGD peptide immobilization on Ti surfaces through the electrodeposition of poly(ethylene glycol) (PEG) (RGD/PEG/Ti), which exhibited good chemical stability and bonding. The RGD/PEG/Ti surface promoted differentiation and mineralization of pre-osteoblasts. This study investigated the in vivo bone healing capacity of the RGD/PEG/Ti surface for biomedical application as a more osteoconductive implant surface in dentistry. The RGD/PEG/Ti surface was produced on an osteoconductive implant surface, i.e. the grit blasted micro-rough surface of a commercial oral implant. The osteoconductivity of the RGD/PEG/Ti surface was compared by histomorphometric evaluation with an RGD peptide-coated surface obtained by simple adsorption in rabbit cancellous bone after 2 and 4 weeks healing. The RGD/PEG/Ti implants displayed a high degree of direct bone apposition in cancellous bone and achieved greater active bone apposition, even in areas of poor surrounding bone. Significant increases in the bone to implant contact percentage were observed for RGD/PEG/Ti implants compared with RGD-coated Ti implants obtained by simple adsorption both after 2 and 4 weeks healing (P<0.05). These results demonstrate that RGD peptide immobilization on a Ti surface through electrodeposited PEG may be an effective method for enhancing bone healing with commercial micro-rough surface oral implants in cancellous bone by achieving rapid bone apposition on the implant surface.
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Effects of gentamicin and gentamicin-RGD coatings on bone ingrowth and biocompatibility of cementless joint prostheses: an experimental study in rabbits. Acta Biomater 2011; 7:1274-80. [PMID: 21081183 DOI: 10.1016/j.actbio.2010.11.012] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2010] [Revised: 11/04/2010] [Accepted: 11/10/2010] [Indexed: 02/04/2023]
Abstract
Antimicrobial coatings are of interest as a means to improve infection prophylaxis in cementless joint arthroplasty. However, those coatings must not interfere with the essential bony integration of the implants. Gentamicin-hydroxyapatite (gentamicin-HA) and gentamicin-RGD (arginine-glycine-aspartate)-HA coatings have recently been shown to significantly reduce infection rates in a rabbit infection prophylaxis model. The purpose of the current study was to investigate the in vitro elution kinetics and in vivo effects of gentamicin-HA and gentamicin-RGD-HA coatings on new bone formation, implant integration and biocompatibility in a rabbit model. In vitro elution testing showed that 95% and 99% of the gentamicin was released after 12 and 24 h, respectively. The in vivo study comprised 45 rabbits in total, with six animals for each of the gentamicin-HA, gentamicin-RGD-HA group and control pure HA coating groups for the 4 week time period, and nine animals for each of the three groups for the 12 week observation period. A 2.0 mm steel K-wire with one of the coatings under test was placed in the intramedullary canal of the tibia. After 4 and 12 weeks the tibiae were harvested and three different areas (proximal metaphysis, shaft area, distal metaphysis) were assessed by quantitative and qualitative histology for new bone formation, direct implant-bone contact and the formation of multinucleated giant cells. The results exhibited high standard deviations in all subgroups. There was a trend towards better bone formation and better direct implant contact in the pure HA coating group compared with both gentamicin coatings after 4 and 12 weeks, which was, however, not statistically significant. The number of multinucleated giant cells did not differ significantly between the three groups at both time points. In summary, both gentamicin coatings with 99% release of gentamicin within 24 h revealed good biocompatibility and bony integration, which was not statistically significant different compared with pure HA coating. Limitations of the study are the high standard deviation of the results and the limited number of animals per time point.
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Abe Y, Hiasa K, Hirata I, Okazaki Y, Nogami K, Mizumachi W, Yoshida Y, Suzuki K, Okazaki M, Akagawa Y. Detection of synthetic RGDS(PO3H2)PA peptide adsorption using a titanium surface plasmon resonance biosensor. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2011; 22:657-661. [PMID: 21221730 DOI: 10.1007/s10856-010-4222-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/09/2010] [Accepted: 12/19/2010] [Indexed: 05/30/2023]
Abstract
The purpose of this study was to measure the time-dependent chemical interaction between synthetic RGDS(PO(3)H(2))PA (P-RGD) peptide and titanium surfaces using a titanium surface plasmon resonance (SPR) biosensor and to determine the degree of peptide immobilization on the surfaces. An SPR instrument for 'single-spot' analysis was used for nanometer-scale detection of biomolecular adsorption using a He-Ne laser light according to Knoll's method. The oxidized titanium surface was etched when exposed to H(3)PO(4) solutions with a pH of 2.0 or below. The amount of P-RGD adsorbed at pH 1.9 was approximately 3.6 times as much as that at pH 3.0 (P < 0.05). P-RGD naturally adsorbed on the oxidized titanium surface as a consequence of the bonding and dissociation mechanism of the phosphate functional group. Furthermore, the control of pH played a very important role in the interaction between P-RGD and the surface. These findings show that pH control may promote progressive binding of biomolecules with the phosphate functional group to the titanium surface.
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Affiliation(s)
- Yasuhiko Abe
- Department of Advanced Prosthodontics, Division of Cervico-Gnathostomatology, Graduate School of Biomedical Sciences, Hiroshima University, 1-2-3, Kasumi, Minami-ku, Hiroshima, 734-8553, Japan.
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Jensen T, Jakobsen T, Baas J, Nygaard JV, Dolatshahi-Pirouz A, Hovgaard MB, Foss M, Bünger C, Besenbacher F, Søballe K. Hydroxyapatite nanoparticles in poly-D,L-lactic acid coatings on porous titanium implants conducts bone formation. J Biomed Mater Res A 2011; 95:665-72. [PMID: 20725972 DOI: 10.1002/jbm.a.32863] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
It is well established in the field of biomaterials that hydroxyapatite (HA) may provide interesting osteoconductive properties. In this study, we investigated the osseointegrational effect of a 50/50 vol % composite of HA nanoparticles and poly-D,L-lactic acid (PDLLA) coated on model titanium bone implants in an in vivo animal model. The aim is to evaluate how the addition of HA to PDLLA may improve the bone formation and initial fixation of the implant. Two titanium implants coated with the PDLLA/HA composite and pure PDLLA, respectively, were implanted bilaterally in proximal part of humeri with a 2-mm peri-implant gap in 10 sheep. After 12 weeks, the remains of the coatings were present on 20.3 and 19.8% of PDLLA/HA composite- and PDLLA-coated implants, respectively. It was observed that newly formed bone (39.3%) and fibrous tissue (58.3%) had replaced the PDLLA/HA composite, whereas pure PDLLA was replaced almost completely by fibrous tissue (96.2%). Consequently, the PDLLA/HA composite-coated implants were better fixated as confirmed by push-out tests. Using quantification of peri-implant tissue and implant fixation as parameters, the present findings, therefore, clearly reveal that the addition of nanoparticulate HA to a PDLLA coating on titanium implants increases osseointegration.
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Affiliation(s)
- Thomas Jensen
- Orthopaedic Research Lab, Department of Orthopaedics, University Hospital of Aarhus, Aarhus C, Denmark
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Bell BF, Schuler M, Tosatti S, Textor M, Schwartz Z, Boyan BD. Osteoblast response to titanium surfaces functionalized with extracellular matrix peptide biomimetics. Clin Oral Implants Res 2011; 22:865-72. [PMID: 21244501 DOI: 10.1111/j.1600-0501.2010.02074.x] [Citation(s) in RCA: 55] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
OBJECTIVE Functionalizing surfaces with specific peptides may aid osteointegration of orthopedic implants by favoring attachment of osteoprogenitor cells and promoting osteoblastic differentiation. This study addressed the hypothesis that implant surfaces functionalized with peptides targeting multiple ligands will enhance osteoblast attachment and/or differentiation. To test this hypothesis, we used titanium (Ti) surfaces coated with poly-l-lysine-grafted polyethylene glycol (PLL-g-PEG) and functionalized with two peptides found in extracellular matrix proteins, arginine-glycine-aspartic acid (RGD) and lysine-arginine-serine-arginine (KRSR), which have been shown to increase osteoblast attachment. KSSR, which does not promote osteoblast attachment, was used as a control. MATERIALS AND METHODS Sandblasted acid-etched titanium surfaces were coated with PLL-g-PEG functionalized with varying combinations of RGD and KRSR, as well as KSSR. Effects of these surfaces on osteoblasts were assessed by measuring cell number, alkaline phosphatase-specific activity, and levels of osteocalcin, transforming growth factor beta-1 (TGF-β1), and PGE(2). RESULTS RGD increased cell number, but decreased markers for osteoblast differentiation. KRSR alone had no effect on cell number, but decreased levels of TGF-β1 and PGE(2). KRSR and RGD/KRSR coatings inhibited osteoblast differentiation vs. PLL-g-PEG. KSSR decreased cell number and increased osteoblast differentiation, indicated by increased levels of osteocalcin and PGE(2). CONCLUSIONS The RGD and KRSR functionalized surfaces supported attachment but did not enhance osteoblast differentiation, whereas KSSR increased differentiation. RGD decreased this effect, suggesting that multifunctional peptide surfaces can be designed that improve peri-implant healing by optimizing attachment and proliferation as well as differentiation of osteoblasts, but peptide combination, dose and presentation are critical variables.
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Affiliation(s)
- B F Bell
- Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, GA 30332-0363, USA
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Meyers SR, Kenan DJ, Khoo X, Grinstaff MW. Bioactive stent surface coating that promotes endothelialization while preventing platelet adhesion. Biomacromolecules 2011; 12:533-9. [PMID: 21218765 DOI: 10.1021/bm101212k] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
A bifunctional peptide coating was designed, synthesized, and evaluated as a potential pro-healing stent coating. The bifunctional peptide consisted of a short 28-mer sequence that on the N-terminus has a motif with affinity for polystyrene binding and at the C-terminus has a motif that was shown to bind selectively human endothelial cells but not platelets. Results showed that the selective coating, a polystyrene-binding peptide terminated in RRETAWA (FFSFFFPASAWGSSGSSGK(biotin)CRRETAWAC), bound endothelial cells quantitatively as well as the common RGD motif, but unlike RGD, it did not show any preference for platelet adherence. Follow-up work examining the difference in cell line selectivity between endothelial cells, whose binding should be encouraged, and smooth muscle cells, whose binding should be deprecated in a stenting application, did identify a temporal preference of the RRETAWA-terminated peptide coating for endothelial cells. However, the in vivo implications of this apparent selectivity need to be examined in more detail before definitive conclusions can be drawn. The positive in vitro results encourage the continued development of other novel coatings that mimic biological structures, signaling capabilities, or both to direct cellular processes on the surface of synthetic materials.
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Affiliation(s)
- Steven R Meyers
- Department of Biomedical Engineering, Metcalf Center for Science and Engineering, 590 Commonwealth Avenue, Boston, Massachusetts 02215, USA
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Shekaran A, García AJ. Extracellular matrix-mimetic adhesive biomaterials for bone repair. J Biomed Mater Res A 2010; 96:261-72. [PMID: 21105174 DOI: 10.1002/jbm.a.32979] [Citation(s) in RCA: 145] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2010] [Revised: 09/07/2010] [Accepted: 09/08/2010] [Indexed: 01/12/2023]
Abstract
Limited osseointegration of current orthopedic biomaterials contributes to the failure of implants such as arthroplasties, bone screws, and bone grafts, which present a large socioeconomic cost within the United States. These implant failures underscore the need for biomimetic approaches that modulate host cell-implant material responses to enhance implant osseointegration and bone formation. Bioinspired strategies have included functionalizing implants with extracellular matrix (ECM) proteins or ECM-derived peptides or protein fragments, which engage integrins and direct osteoblast adhesion and differentiation. This review discusses (1) bone ECM composition and key integrins implicated in osteogenic differentiation, (2) the use of implants functionalized with ECM-mimetic peptides/protein fragments, and (3) growth factor-derived peptides to promote the mechanical fixation of implants to bone and to enhance bone healing within large defects.
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Affiliation(s)
- Asha Shekaran
- Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, Georgia, USA
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Abstract
This manuscript reviews about titanium surface modification techniques for its application in orthopaedic and dental implants. There are a few limitations in the long term prognosis of orthopaedic and dental implants. Poor osseointegration with bone, periimplant infection leading to implant failure and short term longevity demanding revision surgery, are to mention a few. Micro- and nanoscale modification of titanium surface using physicochemical, morphological and biochemical approaches have resulted in higher bone to implant contact ratio and improved osseointegration. With recent advances in micro, nano-fabrication techniques and multidisciplinary research studies focusing on bridging biomaterials for medical applications, TiO2 nanotubes have been extensively studied for implant applications. The need for titanium implant surface that can closely mimic the nanoscale architecture of human bone has become a priority. For such purpose, TiO2 nanotubes of different dimensions and architectural fashions at the nanoscale level are being evaluated. This manuscript discusses in brief about the in-vitro and in-vivo studies on titanium surface modification techniques. This manuscript also addresses the recent studies done on such nanotubular surfaces for the effective delivery of osteoinductive growth factors and anti bacterial/ anti inflammatory drugs to promote osseointegration and prevent peri-implant infection.
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Zhang H, Hollister S. Comparison of bone marrow stromal cell behaviors on poly(caprolactone) with or without surface modification: studies on cell adhesion, survival and proliferation. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2010; 20:1975-93. [PMID: 19874672 DOI: 10.1163/156856208x396074] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Poly(caprolactone) (PCL) is a promising biodegradable polymer for tissue engineering. However, intrinsically poor cell-adhesive properties of PCL may limit its application. In this study, the PCL film surface was modified with RGDC peptide by a chemical immobilization procedure. Furthermore, bone marrow stromal cell (BMSC) behaviors including attachment, spreading, focal adhesion formation, focal adhesion kinase (FAK) activation, apoptosis and proliferation when cultured on the modified PCL films were investigated. Our results demonstrated that PCL with RGD modification promoted initial BMSC attachment, spreading and focal adhesion formation. At a later time point (12 h), BMSC attachment on both RGD peptide-modified PCL and PCL-NH(2) films significantly increased compared to untreated PCL films. Importantly, FAK phosphorylation was significantly increased only on the films with RGD-modified films, not on the PCL-NH(2) films, demonstrating that PCL with RGD modification had an advantage in initiating the specific integrin-mediated signal transduction and might play an important role in the subsequent retardation in cell death and enhancement in cell proliferation. The present results provide more evidence that functionalizing PCL with RGD peptides may be a feasible way to improve the interaction between BMSC and PCL substrate, which is important in tissue engineering.
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Affiliation(s)
- Huina Zhang
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI 48109, USA
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