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Misra RDK, Boriek AM. Exploring fibroblast interactions on nanocrystalline surfaces in physiological environments through a phenomenological lens. ARTIFICIAL CELLS, NANOMEDICINE, AND BIOTECHNOLOGY 2024; 52:229-237. [PMID: 38590145 DOI: 10.1080/21691401.2024.2338127] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/13/2024] [Accepted: 03/25/2024] [Indexed: 04/10/2024]
Abstract
The cytological behaviour and functional dynamics (adhesion, spreading, synthesis of proteins) of fibroblasts when interacting with biomedical surfaces are intricately influenced by the inherent nature of surface (nanocrystalline or microcrystalline), where the nanocrystalline (NC) surface is preferred in relation to the microcrystalline (MC) surface. This preference is a direct consequence of the distinct differences in physical and chemical characteristics between NC and MC surfaces, which include crystal boundary bio-physical attributes, electron work function, surface energy, and charge carrier density. The observed variances in cytological behaviour at the interfaces of NC and MC bio-surfaces can be attributed to these fundamental differences, particularly accounting for the percentage and nature of crystal boundaries. Recognising and understanding these physical and chemical characteristics establish the groundwork for formulating precise guidelines crucial in the development of the forthcoming generation of biomedical devices.
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Affiliation(s)
- R D K Misra
- Department of Metallurgical, Materials, and Biomedical Engineering, University of TX at El Paso, El Paso, TX, USA
| | - Aladin M Boriek
- Departments of Medicine and Molecular Physiology and Biophysics, Baylor College of Medicine, Houston, TX, USA
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2
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Kapat K, Kumbhakarn S, Sable R, Gondane P, Takle S, Maity P. Peptide-Based Biomaterials for Bone and Cartilage Regeneration. Biomedicines 2024; 12:313. [PMID: 38397915 PMCID: PMC10887361 DOI: 10.3390/biomedicines12020313] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2023] [Revised: 01/21/2024] [Accepted: 01/23/2024] [Indexed: 02/25/2024] Open
Abstract
The healing of osteochondral defects (OCDs) that result from injury, osteochondritis, or osteoarthritis and bear lesions in the cartilage and bone, pain, and loss of joint function in middle- and old-age individuals presents challenges to clinical practitioners because of non-regenerative cartilage and the limitations of current therapies. Bioactive peptide-based osteochondral (OC) tissue regeneration is becoming more popular because it does not have the immunogenicity, misfolding, or denaturation problems associated with original proteins. Periodically, reviews are published on the regeneration of bone and cartilage separately; however, none of them addressed the simultaneous healing of these tissues in the complicated heterogeneous environment of the osteochondral (OC) interface. As regulators of cell adhesion, proliferation, differentiation, angiogenesis, immunomodulation, and antibacterial activity, potential therapeutic strategies for OCDs utilizing bone and cartilage-specific peptides should be examined and investigated. The main goal of this review was to study how they contribute to the healing of OCDs, either alone or in conjunction with other peptides and biomaterials.
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Affiliation(s)
- Kausik Kapat
- Department of Medical Devices, National Institute of Pharmaceutical Education and Research Kolkata, 168, Maniktala Main Road, Kankurgachi, Kolkata 700054, West Bengal, India
| | - Sakshi Kumbhakarn
- Department of Medical Devices, National Institute of Pharmaceutical Education and Research Kolkata, 168, Maniktala Main Road, Kankurgachi, Kolkata 700054, West Bengal, India
| | - Rahul Sable
- Department of Medical Devices, National Institute of Pharmaceutical Education and Research Kolkata, 168, Maniktala Main Road, Kankurgachi, Kolkata 700054, West Bengal, India
| | - Prashil Gondane
- Department of Medical Devices, National Institute of Pharmaceutical Education and Research Kolkata, 168, Maniktala Main Road, Kankurgachi, Kolkata 700054, West Bengal, India
| | - Shruti Takle
- Department of Medical Devices, National Institute of Pharmaceutical Education and Research Kolkata, 168, Maniktala Main Road, Kankurgachi, Kolkata 700054, West Bengal, India
| | - Pritiprasanna Maity
- Department of Regenerative Medicine and Cell Biology, Medical University of South Carolina, Charleston, SC 29425, USA
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3
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Tarjányi T, Bogár F, Minárovits J, Gajdács M, Tóth Z. Interaction of biomolecules with anatase, rutile and amorphous TiO2 surfaces: A molecular dynamics study. PLoS One 2023; 18:e0289467. [PMID: 37669294 PMCID: PMC10479902 DOI: 10.1371/journal.pone.0289467] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2023] [Accepted: 07/19/2023] [Indexed: 09/07/2023] Open
Abstract
The adhesion of biomolecules to dental and orthopedic implants is a fundamental step in the process of osseointegration. Short peptide motifs, such as RGD or KRSR, carried by extracellular matrix proteins or coated onto implant surfaces, accelerate cell adhesion and tissue formation. For this reason, understanding the binding mechanisms of adhesive peptides to oxidized surfaces of titanium implants is of paramount importance. We performed molecular dynamics simulations to compare the adhesion properties of 6 peptides, including the tripeptide RGD, its variants KGD and LGD, as well as the tetrapeptide KRSR, its variant LRSR and its truncated version RSR, on anatase, rutile, and amorphous titanium dioxide (TiO2) surfaces. The migration of these molecules from the water phase to the surface was simulated in an aqueous environment. Based on these simulations, we calculated the residence time of each peptide bound to the three different TiO2 structures. It was found that the presence of an N-terminal lysine or arginine amino acid residue resulted in more efficient surface binding. A pulling simulation was performed to detach the adhered molecules. The maximum pulling force and the binding energy were determined from the results of these simulations. The tri- and tetrapeptides had slightly greater adhesion affinity to the amorphous and anatase structure than to rutile in general, however specific surface and peptide binding characters could be detected. The binding energies obtained from our simulations allowed us to rank the adhesion strengths of the studied peptides.
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Affiliation(s)
- Tamás Tarjányi
- Department of Oral Biology and Experimental Dental Research, Faculty of Dentistry, University of Szeged, Szeged, Hungary
| | - Ferenc Bogár
- EKLH-SZTE Biomimetic Systems Research Group, Eötvös Loránd Research Network (ELKH), University of Szeged, Szeged, Hungary
| | - János Minárovits
- Department of Oral Biology and Experimental Dental Research, Faculty of Dentistry, University of Szeged, Szeged, Hungary
| | - Márió Gajdács
- Department of Oral Biology and Experimental Dental Research, Faculty of Dentistry, University of Szeged, Szeged, Hungary
| | - Zsolt Tóth
- Department of Medical Physics and Medical Informatics, University of Szeged, Szeged, Hungary
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Dos Santos LMS, de Oliveira JM, da Silva ECO, Fonseca VML, Silva JP, Barreto E, Dantas NO, Silva ACA, Jesus-Silva AJ, Mendonça CR, Fonseca EJS. Mechanical and morphological responses of osteoblast-like cells to two-photon polymerized microgrooved surfaces. J Biomed Mater Res A 2023; 111:234-244. [PMID: 36239143 DOI: 10.1002/jbm.a.37454] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2022] [Revised: 09/18/2022] [Accepted: 09/27/2022] [Indexed: 01/10/2023]
Abstract
Microgrooved surfaces are recognized as an important strategy of tissue engineering to promote the alignment of bone cells. In this work, we have investigated the mechanical and morphological aspects of osteoblasts cells after interaction with different micro-structured polymeric surfaces. Femtosecond laser writing technique was used for the construction of circular and parallel microgrooved patterns in biocompatible polymeric surfaces based on pentaerythritol triacrylate. Additionally, we have studied the influence of the biocompatible TiO2 nanocrystals (NCs) related to the cell behavior, when incorporated to the photoresin. The atomic force microscopy technique was used to investigate the biomechanical reaction of the human osteoblast-like MG-63 cells for the different microgroove. It was demonstrated that osteoblasts grown on circular microgrooved surfaces exhibited significantly larger Young's modulus compared to cells sown on flat films. Furthermore, we could observe that TiO2 NCs improved the circular microgrooves effects, resulting in more populated sites, 34% more elongated cells, and increasing the cell stiffness by almost 160%. These results can guide the design and construction of effective scaffold surfaces with circular microgrooves for tissue engineering and bone regeneration.
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Affiliation(s)
- Laura M S Dos Santos
- Optics and Nanoscopy Group, Institute of Physics, Federal University of Alagoas (UFAL), Maceió, Brazil
| | | | - Elaine C O da Silva
- Optics and Nanoscopy Group, Institute of Physics, Federal University of Alagoas (UFAL), Maceió, Brazil
| | - Vitor M L Fonseca
- Laboratory of Cell Biology, Institute of Biological Sciences and Health, Federal University of Alagoas (ICBS/UFAL), Maceió, Brazil
| | - Juliane P Silva
- Laboratory of Cell Biology, Institute of Biological Sciences and Health, Federal University of Alagoas (ICBS/UFAL), Maceió, Brazil
| | - Emiliano Barreto
- Laboratory of Cell Biology, Institute of Biological Sciences and Health, Federal University of Alagoas (ICBS/UFAL), Maceió, Brazil
| | | | - Anielle C A Silva
- Institute of Physics, Federal University of Alagoas (UFAL), Maceió, Brazil
| | - Alcenísio J Jesus-Silva
- Optics and Nanoscopy Group, Institute of Physics, Federal University of Alagoas (UFAL), Maceió, Brazil
| | - Cléber R Mendonça
- Institute of Physics of São Carlos, University of São Paulo, São Carlos, Brazil
| | - Eduardo J S Fonseca
- Optics and Nanoscopy Group, Institute of Physics, Federal University of Alagoas (UFAL), Maceió, Brazil
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5
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Enhanced Corrosion Resistance and Biological Properties of Ultrafine-Grained Ti15Zr5Cu Alloy. METALS 2022. [DOI: 10.3390/met12071144] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/10/2022]
Abstract
Titanium alloys are widely used in the biomedical field. To ensure their strength meets requirements in clinics, medical titanium alloys are generally alloyed with toxic Al and/or V elements, hence ensuring their long-term biological safety after implantation is a challenge. In our previous research, we developed an ultrafine-grained Ti15Zr5Cu alloy without toxic elements while its mechanical properties were at the same level with the most widely used Ti6Al4V alloy. In order to promote the clinical application of the ultrafine-grained Ti15Zr5Cu alloy, herein we have systematically studied the hot deformation behaviors of the material as well as evaluated its corrosion resistance and biological properties. Results showed that when the as-quenched Ti15Zr5Cu alloy deformed at 0.05 ≤ ε˙ ≤ 1, 730 °C ≤ T ≤ 750 °C, it not only possessed good workability but also can be converted into an equiaxed ultrafine-grained microstructure. Moreover, the material also exhibited better corrosion resistance, antibacterial properties and biocompatibility than the Ti15Zr alloy and the commercial pure Ti. The results of the present study help lay a foundation for the development of a new generation of medical titanium alloys.
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Tarjányi T, Bogár F, Minarovits J, Gajdács M, Tóth Z. Interaction of KRSR Peptide with Titanium Dioxide Anatase (100) Surface: A Molecular Dynamics Simulation Study. Int J Mol Sci 2021; 22:ijms222413251. [PMID: 34948048 PMCID: PMC8707641 DOI: 10.3390/ijms222413251] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2021] [Revised: 12/04/2021] [Accepted: 12/05/2021] [Indexed: 11/19/2022] Open
Abstract
Due to its tensile strength and excellent biocompatibility, titanium (Ti) is commonly used as an implant material in medicine and dentistry. The success of dental implants depends on the formation of a contact between the oxidized surface of Ti implant and the surrounding bone tissue. The adsorption of proteins and peptides to the implant surface allows the bone-forming osteoblast cells to adhere to such modified surfaces. Recently, it has been observed that tetrapeptide KRSR (Lys-Arg-Ser-Arg) functionalization could promote osteoblast adhesion to implant surfaces. This may facilitate the establishment of an efficient bone-to implant contact and improve implant stability during the healing process. GROMACS, a molecular dynamics software package was used to perform a 200 ns simulation of adsorption of the KRSR peptide to the TiO2 (anatase) surface in an aqueous environment. The molecule conformations were mapped with Replica Exchange Molecular Dynamics (REMD) simulations to assess the possible peptide conformations on the anatase surface, and the umbrella sampling method was used to calculate the binding energy of the most common conformation. The simulations have shown that the KRSR peptide migrates and attaches to the surface in a stable position. The dominant amino acid residue interacting with the TiO2 surface was the N-terminal charged lysine (K) residue. REMD indicated that there is a distinct conformation that is taken by the KRSR peptide. In this conformation the surface interacts only with the lysine residue while the ser (S) and arg (R) residues interact with water molecules farther from the surface. The binding free energy of the most common conformation of KRSR peptide to the anatase (100) surface was ΔG = −8.817 kcal/mol. Our result suggests that the N-terminal lysine residue plays an important role in the adhesion of KRSR to the TiO2 surface and may influence the osseointegration of dental implants.
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Affiliation(s)
- Tamás Tarjányi
- Department of Oral Biology and Experimental Dental Research, Faculty of Dentistry, University of Szeged, Tisza Lajos Körút 64-66, H-6720 Szeged, Hungary; (J.M.); (M.G.)
- Correspondence:
| | - Ferenc Bogár
- MTA-SZTE Biomimetic Systems Research Group, Eötvös Loránd Research Network (ELKH), Dóm tér 8, H-6720 Szeged, Hungary;
| | - Janos Minarovits
- Department of Oral Biology and Experimental Dental Research, Faculty of Dentistry, University of Szeged, Tisza Lajos Körút 64-66, H-6720 Szeged, Hungary; (J.M.); (M.G.)
| | - Márió Gajdács
- Department of Oral Biology and Experimental Dental Research, Faculty of Dentistry, University of Szeged, Tisza Lajos Körút 64-66, H-6720 Szeged, Hungary; (J.M.); (M.G.)
| | - Zsolt Tóth
- Department of Experimental Physics, Faculty of Science and Informatics, University of Szeged, Dóm tér 9, H-6720 Szeged, Hungary;
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Bullock G, Atkinson J, Gentile P, Hatton P, Miller C. Osteogenic Peptides and Attachment Methods Determine Tissue Regeneration in Modified Bone Graft Substitutes. J Funct Biomater 2021; 12:22. [PMID: 33807267 PMCID: PMC8103284 DOI: 10.3390/jfb12020022] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2021] [Revised: 03/18/2021] [Accepted: 03/24/2021] [Indexed: 01/01/2023] Open
Abstract
The inclusion of biofunctional molecules with synthetic bone graft substitutes has the potential to enhance tissue regeneration during treatment of traumatic bone injuries. The clinical use of growth factors has though been associated with complications, some serious. The use of smaller, active peptides has the potential to overcome these problems and provide a cost-effective, safe route for the manufacture of enhanced bone graft substitutes. This review considers the design of peptide-enhanced bone graft substitutes, and how peptide selection and attachment method determine clinical efficacy. It was determined that covalent attachment may reduce the known risks associated with growth factor-loaded bone graft substitutes, providing a predictable tissue response and greater clinical efficacy. Peptide choice was found to be critical, but even within recognised families of biologically active peptides, the configurations that appeared to most closely mimic the biological molecules involved in natural bone healing processes were most potent. It was concluded that rational, evidence-based design of peptide-enhanced bone graft substitutes offers a pathway to clinical maturity in this highly promising field.
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Affiliation(s)
- George Bullock
- School of Clinical Dentistry, The University of Sheffield, Sheffield S10 2TA, UK; (G.B.); (J.A.); (C.M.)
| | - Joss Atkinson
- School of Clinical Dentistry, The University of Sheffield, Sheffield S10 2TA, UK; (G.B.); (J.A.); (C.M.)
| | - Piergiorgio Gentile
- School of Engineering, Newcastle University, Stephenson Building, Newcastle upon Tyne NE1 7RU, UK;
| | - Paul Hatton
- School of Clinical Dentistry, The University of Sheffield, Sheffield S10 2TA, UK; (G.B.); (J.A.); (C.M.)
| | - Cheryl Miller
- School of Clinical Dentistry, The University of Sheffield, Sheffield S10 2TA, UK; (G.B.); (J.A.); (C.M.)
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8
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Hoyos-Nogués M, Falgueras-Batlle E, Ginebra MP, Manero JM, Gil J, Mas-Moruno C. A Dual Molecular Biointerface Combining RGD and KRSR Sequences Improves Osteoblastic Functions by Synergizing Integrin and Cell-Membrane Proteoglycan Binding. Int J Mol Sci 2019; 20:E1429. [PMID: 30901841 PMCID: PMC6470513 DOI: 10.3390/ijms20061429] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2019] [Revised: 03/14/2019] [Accepted: 03/18/2019] [Indexed: 11/16/2022] Open
Abstract
Synergizing integrin and cell-membrane heparan sulfate proteoglycan signaling on biomaterials through peptidic sequences is known to have beneficial effects in the attachment and behavior of osteoblasts; however, controlling the exact amount and ratio of peptides tethered on a surface is challenging. Here, we present a dual molecular-based biointerface combining integrin (RGD) and heparin (KRSR)-binding peptides in a chemically controlled fashion. To this end, a tailor-made synthetic platform (PLATF) was designed and synthesized by solid-phase methodologies. The PLATF and the control linear peptides (RGD or KRSR) were covalently bound to titanium via silanization. Physicochemical characterization by means of contact angle, Raman spectroscopy and XPS proved the successful and stable grafting of the molecules. The biological potential of the biointerfaces was measured with osteoblastic (Saos-2) cells both at short and long incubation periods. Biomolecule grafting (either the PLATF, RGD or KRSR) statistically improved (p < 0.05) cell attachment, spreading, proliferation and mineralization, compared to control titanium. Moreover, the molecular PLATF biointerface synergistically enhanced mineralization (p < 0.05) of Saos-2 cells compared to RGD or KRSR alone. These results indicate that dual-function coatings may serve to improve the bioactivity of medical implants by mimicking synergistic receptor binding.
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Affiliation(s)
- Mireia Hoyos-Nogués
- Biomaterials, Biomechanics and Tissue Engineering Group (BBT), Department of Materials Science and Metallurgical Engineering, Universitat Politècnica de Catalunya (UPC), 08019 Barcelona, Spain.
- Barcelona Research Center in Multiscale Science and Engineering, UPC, 08019 Barcelona, Spain.
| | - Elena Falgueras-Batlle
- Biomaterials, Biomechanics and Tissue Engineering Group (BBT), Department of Materials Science and Metallurgical Engineering, Universitat Politècnica de Catalunya (UPC), 08019 Barcelona, Spain.
- Barcelona Research Center in Multiscale Science and Engineering, UPC, 08019 Barcelona, Spain.
| | - Maria-Pau Ginebra
- Biomaterials, Biomechanics and Tissue Engineering Group (BBT), Department of Materials Science and Metallurgical Engineering, Universitat Politècnica de Catalunya (UPC), 08019 Barcelona, Spain.
- Barcelona Research Center in Multiscale Science and Engineering, UPC, 08019 Barcelona, Spain.
| | - José María Manero
- Biomaterials, Biomechanics and Tissue Engineering Group (BBT), Department of Materials Science and Metallurgical Engineering, Universitat Politècnica de Catalunya (UPC), 08019 Barcelona, Spain.
- Barcelona Research Center in Multiscale Science and Engineering, UPC, 08019 Barcelona, Spain.
| | - Javier Gil
- Biomaterials, Biomechanics and Tissue Engineering Group (BBT), Department of Materials Science and Metallurgical Engineering, Universitat Politècnica de Catalunya (UPC), 08019 Barcelona, Spain.
- Universitat Internacional de Catalunya (UIC), 08195 Sant Cugat del Vallès, Spain.
| | - Carlos Mas-Moruno
- Biomaterials, Biomechanics and Tissue Engineering Group (BBT), Department of Materials Science and Metallurgical Engineering, Universitat Politècnica de Catalunya (UPC), 08019 Barcelona, Spain.
- Barcelona Research Center in Multiscale Science and Engineering, UPC, 08019 Barcelona, Spain.
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9
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Novel osteogenic growth peptide C-terminal pentapeptide grafted poly(d,l-lactic acid) improves the proliferation and differentiation of osteoblasts: The potential bone regenerative biomaterial. Int J Biol Macromol 2018; 119:874-881. [DOI: 10.1016/j.ijbiomac.2018.08.010] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2018] [Revised: 07/30/2018] [Accepted: 08/02/2018] [Indexed: 12/16/2022]
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10
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Wang C, Liu Y, Fan Y, Li X. The use of bioactive peptides to modify materials for bone tissue repair. Regen Biomater 2017; 4:191-206. [PMID: 28596916 PMCID: PMC5458541 DOI: 10.1093/rb/rbx011] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2017] [Revised: 03/08/2017] [Accepted: 03/11/2017] [Indexed: 01/05/2023] Open
Abstract
It has been well recognized that the modification of biomaterials with appropriate bioactive peptides could further enhance their functions. Especially, it has been shown that peptide-modified bone repair materials could promote new bone formation more efficiently compared with conventional ones. The purpose of this article is to give a general review of recent studies on bioactive peptide-modified materials for bone tissue repair. Firstly, the main peptides for inducing bone regeneration and commonly used methods to prepare peptide-modified bone repair materials are introduced. Then, current in vitro and in vivo research progress of peptide-modified composites used as potential bone repair materials are reviewed and discussed. Generally speaking, the recent related studies have fully suggested that the modification of bone repair materials with osteogenic-related peptides provide promising strategies for the development of bioactive materials and substrates for enhanced bone regeneration and the therapy of bone tissue diseases. Furthermore, we have proposed some research trends in the conclusion and perspectives part.
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Affiliation(s)
- Cunyang Wang
- Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, School of Biological Science and Medical Engineering, Beihang University, Beijing 100191, China
| | - Yan Liu
- Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, School of Biological Science and Medical Engineering, Beihang University, Beijing 100191, China
- School of Aeronautic Science and Engineering, Beihang University, Beijing 100191, China
| | - Yubo Fan
- Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, School of Biological Science and Medical Engineering, Beihang University, Beijing 100191, China
| | - Xiaoming Li
- Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, School of Biological Science and Medical Engineering, Beihang University, Beijing 100191, China
- Key Laboratory of Advanced Materials of Ministry of Education of China, Tsinghua University, Beijing 100084, China
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11
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Pagel M, Beck-Sickinger AG. Multifunctional biomaterial coatings: synthetic challenges and biological activity. Biol Chem 2017; 398:3-22. [DOI: 10.1515/hsz-2016-0204] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2016] [Accepted: 07/29/2016] [Indexed: 12/19/2022]
Abstract
Abstract
A controlled interaction of materials with their surrounding biological environment is of great interest in many fields. Multifunctional coatings aim to provide simultaneous modulation of several biological signals. They can consist of various combinations of bioactive, and bioinert components as well as of reporter molecules to improve cell-material contacts, prevent infections or to analyze biochemical events on the surface. However, specific immobilization and particular assembly of various active molecules are challenging. Herein, an overview of multifunctional coatings for biomaterials is given, focusing on synthetic strategies and the biological benefits by displaying several motifs.
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12
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Zhu C, Lv Y, Qian C, Qian H, Jiao T, Wang L, Zhang F. Proliferation and osteogenic differentiation of rat BMSCs on a novel Ti/SiC metal matrix nanocomposite modified by friction stir processing. Sci Rep 2016; 6:38875. [PMID: 27958394 PMCID: PMC5153627 DOI: 10.1038/srep38875] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2016] [Accepted: 11/16/2016] [Indexed: 01/28/2023] Open
Abstract
The aims of this study were to fabricate a novel titanium/silicon carbide (Ti/SiC) metal matrix nanocomposite (MMNC) by friction stir processing (FSP) and to investigate its microstructure and mechanical properties. In addition, the adhesion, proliferation and osteogenic differentiation of rat bone marrow stromal cells (BMSCs) on the nanocomposite surface were investigated. The MMNC microstructure was observed by both scanning and transmission electron microscopy. Mechanical properties were characterized by nanoindentation and Vickers hardness testing. Integrin β1 immunofluorescence, cell adhesion, and MTT assays were used to evaluate the effects of the nanocomposite on cell adhesion and proliferation. Osteogenic and angiogenic differentiation were evaluated by alkaline phosphatase (ALP) staining, ALP activity, PCR and osteocalcin immunofluorescence. The observed microstructures and mechanical properties clearly indicated that FSP is a very effective technique for modifying Ti/SiC MMNC to contain uniformly distributed nanoparticles. In the interiors of recrystallized grains, characteristics including twins, fine recrystallized grains, and dislocations formed concurrently. Adhesion, proliferation, and osteogenic and angiogenic differentiation of rat BMSCs were all enhanced on the novel Ti/SiC MMNC surface. In conclusion, nanocomposites modified using FSP technology not only have superior mechanical properties under stress-bearing conditions but also provide improved surface and physicochemical properties for cell attachment and osseointegration.
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Affiliation(s)
- Chenyuan Zhu
- Department of Prosthodontics, Ninth People’s Hospital, affiliated to Shanghai JiaoTong University School of Medicine, Shanghai Key Laboratory of Stomatology, No. 639, Zhizaoju Road, Shanghai, 200011, PR China
| | - Yuting Lv
- State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, PR China
| | - Chao Qian
- Department of Prosthodontics, Ninth People’s Hospital, affiliated to Shanghai JiaoTong University School of Medicine, Shanghai Key Laboratory of Stomatology, No. 639, Zhizaoju Road, Shanghai, 200011, PR China
| | - Haixin Qian
- Department of Prosthodontics, Ninth People’s Hospital, affiliated to Shanghai JiaoTong University School of Medicine, Shanghai Key Laboratory of Stomatology, No. 639, Zhizaoju Road, Shanghai, 200011, PR China
| | - Ting Jiao
- Department of Prosthodontics, Ninth People’s Hospital, affiliated to Shanghai JiaoTong University School of Medicine, Shanghai Key Laboratory of Stomatology, No. 639, Zhizaoju Road, Shanghai, 200011, PR China
| | - Liqiang Wang
- State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, PR China
| | - Fuqiang Zhang
- Department of Prosthodontics, Ninth People’s Hospital, affiliated to Shanghai JiaoTong University School of Medicine, Shanghai Key Laboratory of Stomatology, No. 639, Zhizaoju Road, Shanghai, 200011, PR China
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13
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Aminian A, Shirzadi B, Azizi Z, Maedler K, Volkmann E, Hildebrand N, Maas M, Treccani L, Rezwan K. Enhanced cell adhesion on bioinert ceramics mediated by the osteogenic cell membrane enzyme alkaline phosphatase. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2016; 69:184-94. [DOI: 10.1016/j.msec.2016.06.056] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/16/2016] [Revised: 05/27/2016] [Accepted: 06/16/2016] [Indexed: 02/06/2023]
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14
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Buckholtz GA, Reger NA, Anderton WD, Schimoler PJ, Roudebush SL, Meng WS, Miller MC, Gawalt ES. Reducing Escherichia coli growth on a composite biomaterial by a surface immobilized antimicrobial peptide. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2016; 65:126-34. [PMID: 27157735 DOI: 10.1016/j.msec.2016.04.021] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/09/2015] [Revised: 03/22/2016] [Accepted: 04/06/2016] [Indexed: 10/22/2022]
Abstract
A new composite bioceramic consisting of calcium aluminum oxide (CaAlO) and hydroxyapatite (HA) was functionalized with the synthetic antimicrobial peptide Inverso-CysHHC10. CaAlO is a bioceramic that can be mold cast easily and quickly at room temperature. Improved functionality was previously achieved through surface reactions. Here, composites containing 0-5% HA (by mass) were prepared and the elastic modulus and modulus of rupture were mechanically similar to non-load bearing bone. The addition of hydroxyapatite resulted in increased osteoblast attachment (>180%) and proliferation (>140%) on all composites compared to 100% CaAlO. Antimicrobial peptide (AMP) immobilization was achieved using an interfacial alkene-thiol click reaction. The linked AMP persisted on the composite (>99.6% after 24h) and retained its activity against Escherichia coli based on N-phenylnaphthylamine uptake and bacterial turbidity tests. Overall, this simple scaffold system improves osteoblast activity and reduces bacterial activity.
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Affiliation(s)
- Gavin A Buckholtz
- Department of Chemistry and Biochemistry, Duquesne University, Pittsburgh, PA 15282, USA
| | - Nina A Reger
- Department of Chemistry and Biochemistry, Duquesne University, Pittsburgh, PA 15282, USA
| | - William D Anderton
- Orthopaedic Biomechanics Research Laboratory, Allegheny General Hospital, Pittsburgh, PA 15212, USA
| | - Patrick J Schimoler
- Orthopaedic Biomechanics Research Laboratory, Allegheny General Hospital, Pittsburgh, PA 15212, USA
| | - Shana L Roudebush
- Division of Pharmaceutical Sciences, Duquesne University, Pittsburgh, PA 15282, USA
| | - Wilson S Meng
- Division of Pharmaceutical Sciences, Duquesne University, Pittsburgh, PA 15282, USA
| | - Mark C Miller
- Orthopaedic Biomechanics Research Laboratory, Allegheny General Hospital, Pittsburgh, PA 15212, USA
| | - Ellen S Gawalt
- Department of Chemistry and Biochemistry, Duquesne University, Pittsburgh, PA 15282, USA; McGowan Institute for Regenerative Medicine, University of Pittsburgh, Pittsburgh, PA 15219, USA.
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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: 51] [Impact Index Per Article: 6.4] [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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Wronska MA, O'Connor IB, Tilbury MA, Srivastava A, Wall JG. Adding Functions to Biomaterial Surfaces through Protein Incorporation. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2016; 28:5485-5508. [PMID: 27164952 DOI: 10.1002/adma.201504310] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/02/2015] [Revised: 03/16/2016] [Indexed: 06/05/2023]
Abstract
The concept of biomaterials has evolved from one of inert mechanical supports with a long-term, biologically inactive role in the body into complex matrices that exhibit selective cell binding, promote proliferation and matrix production, and may ultimately become replaced by newly generated tissues in vivo. Functionalization of material surfaces with biomolecules is critical to their ability to evade immunorecognition, interact productively with surrounding tissues and extracellular matrix, and avoid bacterial colonization. Antibody molecules and their derived fragments are commonly immobilized on materials to mediate coating with specific cell types in fields such as stent endothelialization and drug delivery. The incorporation of growth factors into biomaterials has found application in promoting and accelerating bone formation in osteogenerative and related applications. Peptides and extracellular matrix proteins can impart biomolecule- and cell-specificities to materials while antimicrobial peptides have found roles in preventing biofilm formation on devices and implants. In this progress report, we detail developments in the use of diverse proteins and peptides to modify the surfaces of hard biomaterials in vivo and in vitro. Chemical approaches to immobilizing active biomolecules are presented, as well as platform technologies for isolation or generation of natural or synthetic molecules suitable for biomaterial functionalization.
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Affiliation(s)
- Małgorzata A Wronska
- Microbiology and Center for Research in Medical Devices (CÚRAM), National University of Ireland, Galway, Ireland
| | - Iain B O'Connor
- Microbiology and Center for Research in Medical Devices (CÚRAM), National University of Ireland, Galway, Ireland
| | - Maura A Tilbury
- Microbiology and Center for Research in Medical Devices (CÚRAM), National University of Ireland, Galway, Ireland
| | - Akshay Srivastava
- Microbiology and Center for Research in Medical Devices (CÚRAM), National University of Ireland, Galway, Ireland
| | - J Gerard Wall
- Microbiology and Center for Research in Medical Devices (CÚRAM), National University of Ireland, Galway, Ireland
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17
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Pardun K, Treccani L, Volkmann E, Streckbein P, Heiss C, Li Destri G, Marletta G, Rezwan K. Mixed zirconia calcium phosphate coatings for dental implants: tailoring coating stability and bioactivity potential. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2014; 48:337-46. [PMID: 25579931 DOI: 10.1016/j.msec.2014.12.031] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/04/2014] [Revised: 11/04/2014] [Accepted: 12/05/2014] [Indexed: 02/05/2023]
Abstract
Enhanced coating stability and adhesion are essential for long-term success of orthopedic and dental implants. In this study, the effect of coating composition on mechanical, physico-chemical and biological properties of coated zirconia specimens is investigated. Zirconia discs and dental screw implants are coated using the wet powder spraying (WPS) technique. The coatings are obtained by mixing yttria-stabilized zirconia (TZ) and hydroxyapatite (HA) in various ratios while a pure HA coating served as reference material. Scanning electron microscopy (SEM) and optical profilometer analysis confirm a similar coating morphology and roughness for all studied coatings, whereas the coating stability can be tailored with composition and is probed by insertion and dissections experiments in bovine bone with coated zirconia screw implants. An increasing content of calcium phosphate (CP) resulted in a decrease of mechanical and chemical stability, while the bioactivity increased in simulated body fluid (SBF). In vitro experiments with human osteoblast cells (HOB) revealed that the cells grew well on all samples but are affected by dissolution behavior of the studied coatings. This work demonstrates the overall good mechanical strength, the excellent interfacial bonding and the bioactivity potential of coatings with higher TZ contents, which provide a highly interesting coating for dental implants.
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Affiliation(s)
- Karoline Pardun
- University of Bremen, Advanced Ceramics, Am Biologischen Garten 2, 28359 Bremen, Germany
| | - Laura Treccani
- University of Bremen, Advanced Ceramics, Am Biologischen Garten 2, 28359 Bremen, Germany.
| | - Eike Volkmann
- University of Bremen, Advanced Ceramics, Am Biologischen Garten 2, 28359 Bremen, Germany
| | - Philipp Streckbein
- University Hospital, Justus-Liebig-University Giessen, Department of Cranio-Maxillo-Facial Surgery, Klinikstrasse 33, 35385 Giessen, Germany
| | - Christian Heiss
- University Hospital of Giessen-Marburg, Department of Trauma Surgery, Rudolf-Buchheim-Strasse 7, 35385 Giessen, Germany,; Laboratory of Experimental Surgery, Kerkraderstrasse 9, 35392 Giessen, Germany
| | - Giovanni Li Destri
- Laboratory for Molecular Surfaces and Nanotechnology (LAMSUN), Department of Chemistry, University of Catania and CSGI, Viale A. Doria 6, 95125 Catania, Italy
| | - Giovanni Marletta
- Laboratory for Molecular Surfaces and Nanotechnology (LAMSUN), Department of Chemistry, University of Catania and CSGI, Viale A. Doria 6, 95125 Catania, Italy
| | - Kurosch Rezwan
- University of Bremen, Advanced Ceramics, Am Biologischen Garten 2, 28359 Bremen, Germany
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18
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Aniket, Reid R, Hall B, Marriott I, El-Ghannam A. Early osteoblast responses to orthopedic implants: Synergy of surface roughness and chemistry of bioactive ceramic coating. J Biomed Mater Res A 2014; 103:1961-73. [DOI: 10.1002/jbm.a.35326] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2014] [Revised: 08/24/2014] [Accepted: 09/03/2014] [Indexed: 12/22/2022]
Affiliation(s)
- Aniket
- Department of Mechanical Engineering and Materials Science; Duke University; Durham North Carolina 27708
| | - Robert Reid
- Department of Bioinformatics and Genomics; University of North Carolina at Charlotte; Charlotte North Carolina 28223
| | - Benika Hall
- Department of Bioinformatics and Genomics; University of North Carolina at Charlotte; Charlotte North Carolina 28223
| | - Ian Marriott
- Department of Biology; University of North Carolina at Charlotte; Charlotte North Carolina 28223
| | - Ahmed El-Ghannam
- Department of Mechanical Engineering and Engineering Science; University of North Carolina at Charlotte; Charlotte North Carolina 28223
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19
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Palchesko RN, Buckholtz GA, Romeo JD, Gawalt ES. Co-immobilization of active antibiotics and cell adhesion peptides on calcium based biomaterials. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2014; 40:398-406. [PMID: 24857508 DOI: 10.1016/j.msec.2014.04.017] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/21/2013] [Revised: 02/20/2014] [Accepted: 04/06/2014] [Indexed: 10/25/2022]
Abstract
Two bioactive molecules with unrelated functions, vancomycin and a cell adhesion peptide, were immobilized on the surface of a potential bone scaffold material, calcium aluminum oxide. In order to accomplish immobilization and retain bioactivity three sequential surface functionalization strategies were compared: 1.) vancomycin was chemically immobilized before a cell adhesion peptide (KRSR), 2.) vancomycin was chemically immobilized after KRSR and 3.) vancomycin was adsorbed after binding the cell adhesion peptide. Both molecules remained on the surface and active using all three reaction sequences and after autoclave sterilization based on osteoblast attachment, bacterial turbidity and bacterial zone inhibition test results. However, the second strategy was superior at enhancing osteoblast attachment and significantly decreasing bacterial growth when compared to the other sequences.
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Affiliation(s)
- Rachelle N Palchesko
- Duquesne University, Department of Chemistry and Biochemistry, 600 Forbes Avenue, Pittsburgh, PA 15282, USA
| | - Gavin A Buckholtz
- Duquesne University, Department of Chemistry and Biochemistry, 600 Forbes Avenue, Pittsburgh, PA 15282, USA
| | - Jared D Romeo
- Duquesne University, Department of Chemistry and Biochemistry, 600 Forbes Avenue, Pittsburgh, PA 15282, USA
| | - Ellen S Gawalt
- Duquesne University, Department of Chemistry and Biochemistry, 600 Forbes Avenue, Pittsburgh, PA 15282, USA; McGowan Institute for Regenerative Medicine, University of Pittsburgh, Pittsburgh, PA 15219, USA.
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20
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Kim SE, Yun YP, Park K, Kim HJ, Lee DW, Kim JW, Yang DH, Suh DH. The effects of functionalized titanium with alendronate and bone morphogenic protein-2 for improving osteoblast activity. Tissue Eng Regen Med 2013. [DOI: 10.1007/s13770-013-1098-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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21
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The effect of titanium with heparin/BMP-2 complex for improving osteoblast activity. Carbohydr Polym 2013; 98:546-54. [DOI: 10.1016/j.carbpol.2013.05.095] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2013] [Revised: 05/25/2013] [Accepted: 05/27/2013] [Indexed: 11/18/2022]
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22
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Pardun K, Treccani L, Volkmann E, Li Destri G, Marletta G, Streckbein P, Heiss C, Rezwan K. Characterization of wet powder-sprayed zirconia/calcium phosphate coating for dental implants. Clin Implant Dent Relat Res 2013; 17:186-98. [PMID: 23574454 DOI: 10.1111/cid.12071] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
PURPOSE Yttria-stabilized zirconia (TZ) is used for dental applications because of its low toxicity and beneficial mechanical properties, but it does not stimulate bone regeneration around the implant due to its bioinertness. Therefore, hydroxyapatite (HA) coatings are often utilized to increase the surface bioactivity and to achieve a better osseointegration. These coatings, however, are chemically nonstable and provide a weak bonding to the substrate surface. MATERIALS AND METHODS In this study, zirconia substrates were coated with a calcium phosphate/zirconia mixture to achieve ceramic coatings with a high bioactivity potential and a good mechanical stability. The coatings were obtained by wet powder spraying (WPS). Pure HA and TZ coatings were employed as reference materials. The coatings were characterized with regard to microstructure, surface roughness, and phase composition. Scratch tests were carried out to investigate the coating adhesion. The influence of the coating on the mechanical strength was evaluated with the ball on three balls test (B3B). In addition, zirconia dental implant screws were also coated and inserted in a biomechanical test block and bovine rip bone. RESULTS After sintering, the mixed coating exhibited a porous morphology with a surface roughness of about 4 μm and a total porosity of 17%. Phase analysis showed a transformation from TZ and HA to calcium zirconium oxide and tricalcium phosphate. Investigations of the bond strength confirmed a strong adhesion of the mixed coating to the substrate, while the biaxial fracture strength was only slightly affected. Insertion experiments confirmed the scratch test results and evidenced an intact mixed coating on the zirconia screw. CONCLUSIONS The present study revealed a higher stability and firm adhesion of the mixed coating compared with a pure calcium phosphate coating. We also successfully demonstrate the particular versatility of the WPS technique for dental implants by coating a complex curved surface.
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23
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Sun S, Yu W, Zhang Y, Zhang F. Increased preosteoblast adhesion and osteogenic gene expression on TiO2 nanotubes modified with KRSR. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2013; 24:1079-1091. [PMID: 23371766 DOI: 10.1007/s10856-013-4869-6] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/31/2012] [Accepted: 01/18/2013] [Indexed: 06/01/2023]
Abstract
TiO2 anodized nanotubelayers are potentially useful for orthopedic and dental implants because they promotes bone formation. Peptide sequences, such as lysine-arginine-serine-arginine (KRSR), are often used to modify biomaterial surfaces for the selective adhesion of bone cells. The objective of this study was to functionalize TiO2 nanotube layers with KRSR to examine the responses of mouse preosteoblasts (MC3T3-E1) to this new material in vitro. SEM, AFM, XPS were used to characterize the materials. Immunofluorescence staining, SEM, ALP, RT-PCR, Wb analysis were used to detect the preosteoblast adhesion, spreading and osteogenic differentiation. KRSR peptides could be immobilized on the TiO2 nanotube layers by silane coupling. Immobilized KRSR increased preosteoblast adhesion and spreading on TiO2 nanotube layers. Moreover, osteogenic differentiation increased on the KRSR-modified TiO2 nanotube layers. KRSR-modified TiO2 nanotube layers have satisfactory biological properties and should be further investigated as medical implant materials.
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Affiliation(s)
- ShengJun Sun
- Department of Prosthodontics, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai Key Laboratory of Stomatology, Shanghai, People's Republic China
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24
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Yazici H, Fong H, Wilson B, Oren E, Amos F, Zhang H, Evans J, Snead M, Sarikaya M, Tamerler C. Biological response on a titanium implant-grade surface functionalized with modular peptides. Acta Biomater 2013; 9:5341-52. [PMID: 23159566 DOI: 10.1016/j.actbio.2012.11.004] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2012] [Revised: 10/18/2012] [Accepted: 11/02/2012] [Indexed: 12/21/2022]
Abstract
Titanium (Ti) and its alloys are among the most successful implantable materials for dental and orthopedic applications. The combination of excellent mechanical and corrosion resistance properties makes them highly desirable as endosseous implants that can withstand a demanding biomechanical environment. Yet, the success of the implant depends on its osteointegration, which is modulated by the biological reactions occurring at the interface of the implant. A recent development for improving biological responses on the Ti-implant surface has been the realization that bifunctional peptides can impart material binding specificity not only because of their molecular recognition of the inorganic material surface, but also through their self-assembly and ease of biological conjugation properties. To assess peptide-based functionalization on bioactivity, the present authors generated a set of peptides for implant-grade Ti, using cell surface display methods. Out of 60 unique peptides selected by this method, two of the strongest titanium binding peptides, TiBP1 and TiBP2, were further characterized for molecular structure and adsorption properties. These two peptides demonstrated unique, but similar molecular conformations different from that of a weak binder peptide, TiBP60. Adsorption measurements on a Ti surface revealed that their disassociation constants were 15-fold less than TiBP60. Their flexible and modular use in biological surface functionalization were demonstrated by conjugating them with an integrin recognizing peptide motif, RGDS. The functionalization of the Ti surface by the selected peptides significantly enhanced the bioactivity of osteoblast and fibroblast cells on implant-grade materials.
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25
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Lee DW, Yun YP, Park K, Kim SE. Gentamicin and bone morphogenic protein-2 (BMP-2)-delivering heparinized-titanium implant with enhanced antibacterial activity and osteointegration. Bone 2012; 50:974-82. [PMID: 22289658 DOI: 10.1016/j.bone.2012.01.007] [Citation(s) in RCA: 135] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/23/2011] [Revised: 01/11/2012] [Accepted: 01/12/2012] [Indexed: 01/30/2023]
Abstract
Insufficient bonding of implants to bone tissues and bacterial infections lead to the failure of titanium (Ti)-based orthopedic and dental implants. The aim of this study is to develop novel Ti implants that enhance osteoblast functions, while simultaneously decreasing bacterial infections. First, the surface of pristine Ti was functionalized with heparin-dopamine by mimicking a mussel adhesion mechanism. Gentamicin sulfate (GS) and/or bone morphogenic protein-2 (BMP-2) was then sequentially immobilized to the heparinized-Ti (Hep-Ti) surface. The compositions of pristine Ti and Hep-Ti with or without gentamicin and/or BMP-2 were characterized by X-ray photoelectron spectroscopy (XPS) and the growth of Staphylococcus aureus on the substrates was assayed. Osteoblast functions of all Ti substrates were investigated by cell proliferation assays, alkaline phosphatase (ALP) activity, and calcium deposition. The results showed that the growth of bacteria on GS/Hep-Ti and GS/BMP-2/Hep-Ti was significantly lower compared to that on the pristine Ti and BMP-2/Hep-Ti. In addition, BMP-2/Hep-Ti and GS/BMP-2/Hep-Ti significantly enhanced ALP activity and calcium mineral deposition of osteoblast cells. Taken together, GS/BMP-2/Hep-Ti could achieve the dual functions of excellent antibacterial activity and osteoblast function promotion. Therefore, dual drug (antibiotics and osteoinductive protein)-eluting Ti substrates such as GS/BMP-2/Hep-Ti are a promising material for the enhanced osteointegration and implant longevity in orthopedics and dentistry.
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Affiliation(s)
- Deok-Won Lee
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Kyung Hee University, Kyung Hee University Dental Hospital at Gangdong, #149 Sangil-dong, Gangdong-gu, Seoul, 134-727, Republic of Korea
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26
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Palchesko RN, Romeo JD, McGowan KA, Gawalt ES. Increased osteoblast adhesion on physically optimized KRSR modified calcium aluminate. J Biomed Mater Res A 2012; 100:1229-38. [PMID: 22362675 DOI: 10.1002/jbm.a.33303] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2011] [Revised: 08/19/2011] [Accepted: 10/10/2011] [Indexed: 01/21/2023]
Abstract
Calcium aluminate (CA) is a porous biocompatible material easily cast at room temperature. Through this casting process, the average surface pore size of CA was varied from an average of 100 to 290 microns. The optimal surface pore size of the hydrated CA for cell viability was determined to be 100 microns. Further, a three step-solution deposition technique was developed to covalently immobilize cell adhesion peptides, RGD, and KRSR to the CA surface. Cell adhesion for 1-, 4-, and 7-day time periods was tested with primary osteoblasts and NIH 3T3 fibroblasts. Both peptides were found to increase fibroblast adhesion to the CA surface. However, only KRSR increased osteoblast adhesion to the surface of the CA, which may aid in bone formation after implantation.
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Affiliation(s)
- Rachelle N Palchesko
- Department of Chemistry and Biochemistry, Duquesne University, Pittsburgh, Pennsylvania 15282, USA
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27
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Musib M, Saha S. Nanostructured materials for bone tissue replacement. Nanomedicine (Lond) 2012. [DOI: 10.1533/9780857096449.4.599] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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28
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Ren X, Wu Y, Cheng Y, Ma H, Wei S. Fibronectin and bone morphogenetic protein-2-decorated poly(OEGMA-r-HEMA) brushes promote osseointegration of titanium surfaces. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2011; 27:12069-12073. [PMID: 21888364 DOI: 10.1021/la202438u] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
To be better used as medical implants in orthopedic and dental clinical applications, titanium and titanium-based alloys need to be capable of inducing osteogenesis. Here we describe a method that allows the facile decoration of titanium surfaces to impart an osteogenesis capacity. A Ti surface was first deposited on a poly(OEGMA-r-HEMA) film using surface-initiated atom-transfer radical polymerization (SI-ATRP) with the further step of carboxylation. The modified surfaces were resistant to cell adhesion. Fibronectin (FN) and recombinant human bone morphogenetic protein-2 (rhBMP-2) were further immobilized onto p(OEGMA-r-HEMA) matrices. Our results demonstrate that the FN- and rhBMP-2-conjugated polymer surfaces could induce the adhesion of MC3T3 cells on Ti surfaces. Moreover, the protein-tethered surface exhibited enhanced cell differentiation in terms of alkaline phosphatase activity compared to that of the pristine Ti surface at similar cell proliferation rates. This research establishes a simple modification method of Ti surfaces via Ti-thiolate self-assembled monolayers (SAMs) and SI-ATRP and identifies a dual-functional Ti surface that combines antifouling and osseointegration promotion.
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Affiliation(s)
- Xiaoshuai Ren
- Center for Biomedical Materials and Tissue Engineering, Academy for Advanced Interdisciplinary Studies, School and Hospital of Stomatology, Peking University, 100871 Beijing, PR China
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29
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Zhao C, Cao P, Ji W, Han P, Zhang J, Zhang F, Jiang Y, Zhang X. Hierarchical titanium surface textures affect osteoblastic functions. J Biomed Mater Res A 2011; 99:666-75. [DOI: 10.1002/jbm.a.33239] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2011] [Revised: 07/10/2011] [Accepted: 07/27/2011] [Indexed: 01/26/2023]
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Variola F, Brunski J, Orsini G, de Oliveira PT, Wazen R, Nanci A. Nanoscale surface modifications of medically relevant metals: state-of-the art and perspectives. NANOSCALE 2011; 3:335-53. [PMID: 20976359 PMCID: PMC3105323 DOI: 10.1039/c0nr00485e] [Citation(s) in RCA: 116] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
Evidence that nanoscale surface properties stimulate and guide various molecular and biological processes at the implant/tissue interface is fostering a new trend in designing implantable metals. Cutting-edge expertise and techniques drawn from widely separated fields, such as nanotechnology, materials engineering and biology, have been advantageously exploited to nanoengineer surfaces in ways that control and direct these processes in predictable manners. In this review, we present and discuss the state-of-the-art of nanotechnology-based approaches currently adopted to modify the surface of metals used for orthopedic and dental applications, and also briefly consider their use in the cardiovascular field. The effects of nanoengineered surfaces on various in vitro molecular and cellular events are firstly discussed. This review also provides an overview of in vivo and clinical studies with nanostructured metallic implants, and addresses the potential influence of nanotopography on biomechanical events at interfaces. Ultimately, the objective of this work is to give the readership a comprehensive picture of the current advances, future developments and challenges in the application of the infinitesimally small to biomedical surface science. We believe that an integrated understanding of the in vitro and particularly of the in vivo behavior is mandatory for the proper exploitation of nanostructured implantable metals and, indeed, of all biomaterials.
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Affiliation(s)
- Fabio Variola
- Faculty of Engineering, Department of Mechanical Engineering, University of Ottawa, Ottawa, ON, K1N 6N5 (Canada)
- Laboratory for the Study of Calcified Tissues and Biomaterials, Faculté de Médecine Dentaire, Université de Montréal, Montréal, QC, H3C 3J7 (Canada)
| | - John Brunski
- Division of Plastic & Reconstructive Surgery, Department of Surgery PSRL, School of Medicine, Stanford University, 257 Campus Drive Stanford, CA 94305 (USA)
| | - Giovanna Orsini
- Department of Clinical Sciences and Stomatology, University of Marche, Via Tronto 10, 66026 Ancona (Italy)
| | - Paulo Tambasco de Oliveira
- Department of Morphology, Stomatology and Physiology, University of São Paulo, Ribeirão Preto, SP, 14040-904 (Brazil)
| | - Rima Wazen
- Laboratory for the Study of Calcified Tissues and Biomaterials, Faculté de Médecine Dentaire, Université de Montréal, Montréal, QC, H3C 3J7 (Canada)
| | - Antonio Nanci
- Laboratory for the Study of Calcified Tissues and Biomaterials, Faculté de Médecine Dentaire, Université de Montréal, Montréal, QC, H3C 3J7 (Canada)
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31
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Zhang L, Hemraz UD, Fenniri H, Webster TJ. Tuning cell adhesion on titanium with osteogenic rosette nanotubes. J Biomed Mater Res A 2011; 95:550-63. [PMID: 20725961 DOI: 10.1002/jbm.a.32832] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Self-assembled rosette nanotubes (RNTs), obtained from a twin G∧C base functionalized with lysine-arginine-serine-arginine [KRSR-(G∧C)(2)], were designed and investigated as bioactive coatings on titanium. These results were compared to RNTs derived from Lysine-G∧C (K-G∧C), Arg-Gly-Asp-G∧C (RGD-G∧C), and aminobutane-(G∧C)(2) [AB-(G∧C)(2)]. The results from this study revealed that these materials had excellent cytocompatibility properties as they enhanced osteoblast (bone forming cell) adhesion when coated on titanium. In particular, KRSR and RGD functionalized RNTs coated on titanium promoted the greatest osteoblast densities relative to untreated titanium. Furthermore, KRSR functionalized RNTs selectively improved osteoblast adhesion relative to fibroblast (soft-tissue forming cell) and endothelial (cells that line the vascular) cell adhesion. In contrast with these results, RNTs obtained from an unfunctionalized twin base [AB-(G∧C)(2)], RGD-G∧C co-assembled with K-G∧C and K-G∧C significantly enhanced endothelial cell attachment, which may find applications in the vascularization of newly formed bone tissue. In summary, these studies suggest that the surface of orthopedic implant materials (such as titanium) could be tailored to promote selective cell adhesion using biologically-inspired nanotubular structures functionalized with osteogenic compounds.
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Affiliation(s)
- Lijie Zhang
- Division of Engineering, Brown University, 182 Hope Street, Providence, Rhode Island 02912, USA
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32
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Anselme K, Ponche A, Bigerelle M. Relative influence of surface topography and surface chemistry on cell response to bone implant materials. Part 2: Biological aspects. Proc Inst Mech Eng H 2010; 224:1487-507. [DOI: 10.1243/09544119jeim901] [Citation(s) in RCA: 160] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
A current medical challenge is the replacement of tissue which can be thought of in terms of bone tissue engineering approaches. The key problem in bone tissue engineering lies in associating bone stem cells with material supports or scaffolds that can be implanted in a patient. Beside bone tissue engineering approaches, these types of materials are used daily in orthopaedics and dental practice as permanent or transitory implants such as ceramic bone filling materials or metallic prostheses. Consequently, it is essential to better understand how bone cells interact with materials. For several years, the current authors and others have developed in vitro studies in order to elucidate the mechanisms underlying the response of human bone cells to implant surfaces. This paper reviews the current state of knowledge and proposes future directions for research in this domain.
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Affiliation(s)
- K Anselme
- Institut de Sciences des Matériaux de Mulhouse (IS2M), CNRS LRC7228, Université de Haute-Alsace, Mulhouse, France
| | - A Ponche
- Institut de Sciences des Matériaux de Mulhouse (IS2M), CNRS LRC7228, Université de Haute-Alsace, Mulhouse, France
| | - M Bigerelle
- Laboratoire Roberval, CNRS UMR6253, Centre de Recherche de Royallieu, Université de Technologie de Compiègne, Compiègne, France
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33
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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: 150] [Impact Index Per Article: 10.7] [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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34
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Kim SE, Song SH, Yun YP, Choi BJ, Kwon IK, Bae MS, Moon HJ, Kwon YD. The effect of immobilization of heparin and bone morphogenic protein-2 (BMP-2) to titanium surfaces on inflammation and osteoblast function. Biomaterials 2010; 32:366-73. [PMID: 20880582 DOI: 10.1016/j.biomaterials.2010.09.008] [Citation(s) in RCA: 161] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2010] [Accepted: 09/03/2010] [Indexed: 11/24/2022]
Abstract
The aim of this study was to investigate biologic function of bone morphorgenic protein-2 (rhBMP-2) immobilized on the heparin-grafted Ti surface. Ti surfaces were first modified by 3-aminopropyltriethoxysilane (ATPES), followed by grafting of heparin. BMP-2 was then immobilized on the heparin-grafted Ti surfaces. Pristine Ti and functionalized Ti surfaces were characterized by X-ray photoelectron spectroscopy (XPS), measurement of water contact angles, and protein adsorption. The biological activity of MG-63 cells on pristine and functionalized Ti surfaces was investigated by cell proliferation assays, measurement of alkaline phosphate (ALP) activity, and determination of calcium deposition. Anti-inflammatory effects were assessed by RT-PCR to measure the transcript levels of IL-6 and TNF-α. XPS revealed that heparin and BMP-2 were successfully grafted and immobilized on the Ti surfaces, respectively. In addition, Ti surfaces with BMP-2 immobilized were more hydrophilic than pristine Ti. Furthermore, BMP-2 immobilized Ti promoted significantly higher ALP activity and calcium deposition by MG-63 cells than pristine Ti. The inflammatory response was also decreased when cells were grown on heparin-grafted, BMP-2-immobilized Ti surfaces. The results of this study suggest that by grafting heparin and immobilizing BMP-2 on Ti surfaces, inflammation can be inhibited and osteoblast function promoted.
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Affiliation(s)
- Sung Eun Kim
- Department of Orthopedic Surgery and Rare Diseases Institute, Korea University Medical College, Guro Hospital, Seoul, Korea
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35
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Curran JM, Stokes R, Irvine E, Graham D, Amro NA, Sanedrin RG, Jamil H, Hunt JA. Introducing dip pen nanolithography as a tool for controlling stem cell behaviour: unlocking the potential of the next generation of smart materials in regenerative medicine. LAB ON A CHIP 2010; 10:1662-70. [PMID: 20390207 DOI: 10.1039/c004149a] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
Reproducible control of stem cell populations, regardless of their original source, is required for the true potential of these cells to be realised as medical therapies, cell biology research tools and in vitro assays. To date there is a lack of consistency in successful output when these cells are used in clinical trials and even simple in vitro experiments, due to cell and material variability. The successful combination of single chemistries in nanoarray format to control stem cell, or any cellular behaviour has not been previously reported. Here we report how homogenously nanopatterned chemically modified surfaces can be used to initiate a directed cellular response, particularly mesenchymal stem cell (MSC) differentiation, in a highly reproducible manner without the need for exogenous biological factors and heavily supplemented cell media. Successful acquisition of these data should lead to the optimisation of cell selective properties of materials, further enhancing the role of nanopatterned substrates in cell biology and regenerative medicine. The successful design and comparison of homogenously molecularly nanopatterned surfaces and their direct effect on human MSC adhesion and differentiation are reported in this paper. Planar gold surfaces were patterned by dip pen nanolithography (DPN) to produce arrays of nanodots with optimised fixed diameter of 70 nanometres separated by defined spacings, ranging from 140 to 1000 nm with terminal functionalities of simple chemistries including carboxyl, amino, methyl and hydroxyl. These nanopatterned surfaces exhibited unprecedented control of initial cell interactions and subsequent control of cell phenotype and offer significant potential for the future.
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Affiliation(s)
- Judith M Curran
- UKCTE, The Division of Clinical Engineering, School of Clinical Sciences, LINSET, The University of Liverpool, Ground Floor Duncan Building, Daulby Street, Liverpool, UK.
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36
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Curran JM, Chen R, Stokes R, Irvine E, Graham D, Gubbins E, Delaney D, Amro N, Sanedrin R, Jamil H, Hunt JA. Nanoscale definition of substrate materials to direct human adult stem cells towards tissue specific populations. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2010; 21:1021-1029. [PMID: 20037772 DOI: 10.1007/s10856-009-3976-x] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2009] [Accepted: 12/11/2009] [Indexed: 05/28/2023]
Abstract
The development of homogenously nano-patterned chemically modified surfaces that can be used to initiate a cellular response, particularly stem cell differentiation, in a highly controlled manner without the need for exogenous biological factors has never been reported, due to that fact that precisely defined and reproducible systems have not been available that can be used to study cell/material interactions and unlock the potential of a material driven cell response. Until now material driven stem cell (furthermore any cell) responses have been variable due to the limitations in definition and reproducibility of the underlying substrate and the lack of true homogeneity of modifications that can dictate a cellular response at a sub-micron level that can effectively control initial cell interactions of all cells that contact the surface. Here we report the successful design and use of homogenously molecularly nanopatterned surfaces to control initial stem cell adhesion and hence function. The highly specified nano-patterned arrays were compared directly to silane modified bulk coated substrates that have previously been proven to initiate mesenchymal stem cell (MSC) differentiation in a heterogenous manner, the aim of this study was to prove the efficiency of these previously observed cell responses could be enhanced by the incorporation of nano-patterns. Nano-patterned surfaces were prepared by Dip Pen Nanolithography (DPN) to produce arrays of 70 nm sized dots separated by defined spacings of 140, 280 and 1000 nm with terminal functionalities of carboxyl, amino, methyl and hydroxyl and used to control cell growth. These nanopatterned surfaces exhibited unprecedented control of initial cell interactions and will change the capabilities for stem cell definition in vitro and then cell based medical therapies. In addition to highlighting the ability of the materials to control stem cell functionality on an unprecedented scale this research also introduces the successful scale-up of DPN and the novel chemistries and systems to facilitate the production of homogeneously patterned substrates (5 mm2) that are applicable for use in in vitro cell conditions over prolonged periods for complete control of material driven cell responses.
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Affiliation(s)
- Judith M Curran
- Clinical Engineering, UKCTE, UKBioTEC, LINSET, University of Liverpool, Duncan Building, Daulby Street, Liverpool L69 3GA, UK
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37
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Anderson JM, Kushwaha M, Tambralli A, Bellis SL, Camata RP, Jun HW. Osteogenic differentiation of human mesenchymal stem cells directed by extracellular matrix-mimicking ligands in a biomimetic self-assembled peptide amphiphile nanomatrix. Biomacromolecules 2009; 10:2935-44. [PMID: 19746964 PMCID: PMC2760643 DOI: 10.1021/bm9007452] [Citation(s) in RCA: 72] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
This study investigated the ability of nanoscale, biomimetic peptide amphiphile (PA) scaffolds inscribed with specific cellular adhesive ligands to direct the osteogenic differentiation of human mesenchymal stem cells (hMSCs) without osteogenic supplements. PA sequences were synthesized to mimic the native bone extracellular matrix (ECM), expressing different isolated ligands (i.e., RGDS, DGEA, KRSR). All PAs were presented as self-assembled two-dimensional coatings for the seeded hMSCs. Initial attachment results demonstrated that the different PAs could be individually recognized based on the incorporated adhesive ligands. Long-term studies assessed osteogenic differentiation up to 35 days. The RGDS-containing PA nanomatrix expressed significantly greater alkaline phosphatase activity, indicating the early promotion of osteogenic differentiation. A progressive shift toward osteogenic morphology and positive staining for mineral deposition provided further confirmation of the RGDS-containing PA nanomatrix. Overall, the PA nanomatrix clearly has great promise for directing the osteogenic differentiation of hMSCs without the aid of supplements by mimicking the native ECM, providing an adaptable environment that allows for different adhesive ligands to control cellular behaviors. This research model establishes the beginnings of a new versatile approach to regenerate bone tissues by closely following the principles of natural tissue formation.
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Affiliation(s)
- Joel M. Anderson
- Department of Biomedical Engineering, University of Alabama at Birmingham, Birmingham, AL 35233
| | - Meenakshi Kushwaha
- Department of Biomedical Engineering, University of Alabama at Birmingham, Birmingham, AL 35233
| | - Ajay Tambralli
- Department of Biomedical Engineering, University of Alabama at Birmingham, Birmingham, AL 35233
| | - Susan L. Bellis
- Department of Biomedical Engineering, University of Alabama at Birmingham, Birmingham, AL 35233
- Department of Physiology & Biophysics, University of Alabama at Birmingham, Birmingham, AL 35233
| | - Renato P. Camata
- Department of Physics, University of Alabama at Birmingham, Birmingham, AL 35233
| | - Ho-Wook Jun
- Department of Biomedical Engineering, University of Alabama at Birmingham, Birmingham, AL 35233
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38
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Estrin Y, Kasper C, Diederichs S, Lapovok R. Accelerated growth of preosteoblastic cells on ultrafine grained titanium. J Biomed Mater Res A 2009; 90:1239-42. [DOI: 10.1002/jbm.a.32174] [Citation(s) in RCA: 81] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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39
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Baroli B. From natural bone grafts to tissue engineering therapeutics: Brainstorming on pharmaceutical formulative requirements and challenges. J Pharm Sci 2009; 98:1317-75. [PMID: 18729202 DOI: 10.1002/jps.21528] [Citation(s) in RCA: 101] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Tissue engineering is an emerging multidisciplinary field of investigation focused on the regeneration of diseased or injured tissues through the delivery of appropriate molecular and mechanical signals. Therefore, bone tissue engineering covers all the attempts to reestablish a normal physiology or to speed up healing of bone in all musculoskeletal disorders and injuries that are lashing modern societies. This article attempts to give a pharmaceutical perspective on the production of engineered man-made bone grafts that are described as implantable tissue engineering therapeutics, and to highlight the importance of understanding bone composition and structure, as well as osteogenesis and bone healing processes, to improve the design and development of such implants. In addition, special emphasis is given to pharmaceutical aspects that are frequently minimized, but that, instead, may be useful for formulation developments and in vitro/in vivo correlations.
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Affiliation(s)
- Biancamaria Baroli
- Dip. Farmaco Chimico Tecnologico, Università di Cagliari, Via Ospedale, 72, 09124 Cagliari, Italy
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40
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Zhang L, Rakotondradany F, Myles AJ, Fenniri H, Webster TJ. Arginine-glycine-aspartic acid modified rosette nanotube–hydrogel composites for bone tissue engineering. Biomaterials 2009; 30:1309-20. [DOI: 10.1016/j.biomaterials.2008.11.020] [Citation(s) in RCA: 71] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2008] [Accepted: 11/18/2008] [Indexed: 01/31/2023]
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41
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Bussy C, Verhoef R, Haeger A, Morra M, Duval J, Vigneron P, Bensoussan A, Velzenberger E, Cascardo G, Cassinelli C, Schols H, Knox JP, Nagel M. Modulatingin vitrobone cell and macrophage behavior by immobilized enzymatically tailored pectins. J Biomed Mater Res A 2008; 86:597-606. [DOI: 10.1002/jbm.a.31729] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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42
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Ainslie KM, Tao SL, Popat KC, Desai TA. In vitro immunogenicity of silicon-based micro- and nanostructured surfaces. ACS NANO 2008; 2:1076-1084. [PMID: 19206506 DOI: 10.1021/nn800071k] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
The increasing use of micro- and nanostructured silicon-based devices for in vivo therapeutic or sensing applications highlights the importance of understanding the immunogenicity of these surfaces. Four silicon surfaces (nanoporous, microstructured, nanochanneled, and flat) were studied for their ability to provoke an immune response in human blood derived monocytes. The monocytes were incubated with the surfaces for 48 h and the immunogenicity was evaluated based on the viability, shape factors, and cytokine expression. Free radical oxygen formation was measured at 18 h to elicit a possible mechanism invoking immunogenicity. Although no cytokines were significantly different comparing the response of monocytes on the tissue culture polystyrene surfaces to those on the micropeaked surfaces, on average all cytokines were elevated on the micropeaked surface. The monocytes on the nanoporous surface also displayed an elevated cytokine response, overall, but not to the degree of those on the micropeaked surface. The nanochanneled surface response was similar to that of flat silicon. Overall, the immunogenicity and biocompatibility of flat, nanochanneled, and nanoporous silicon toward human monocytes are approximately equivalent to tissue culture polystyrene.
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Affiliation(s)
- Kristy M Ainslie
- Department of Bioengineering and Therapeutic Sciences, University of California, San Francisco, San Francisco, California 94158, USA
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