101
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Hayes JS, Richards RG. Surfaces to control tissue adhesion for osteosynthesis with metal implants:in vitroandin vivostudies to bring solutions to the patient. Expert Rev Med Devices 2014; 7:131-42. [DOI: 10.1586/erd.09.55] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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102
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Elias CN, Meirelles L. Improving osseointegration of dental implants. Expert Rev Med Devices 2014; 7:241-56. [DOI: 10.1586/erd.09.74] [Citation(s) in RCA: 114] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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103
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Harvey AG, Hill EW, Bayat A. Designing implant surface topography for improved biocompatibility. Expert Rev Med Devices 2014; 10:257-67. [DOI: 10.1586/erd.12.82] [Citation(s) in RCA: 94] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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104
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Long T, Guo YP, Tang S, Guo YJ, Zhu ZA. Emulsion fabrication of magnetic mesoporous carbonated hydroxyapatite microspheres for treatment of bone infection. RSC Adv 2014. [DOI: 10.1039/c3ra45896b] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
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105
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Turner LA, J. Dalby M. Nanotopography – potential relevance in the stem cell niche. Biomater Sci 2014; 2:1574-1594. [DOI: 10.1039/c4bm00155a] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Nanotopographical cues observed in vivo (such as in the sinusoid and bone) closely resemble nanotopographies that in vitro have been shown to promote niche relevant stem cells behaviours; specifically, retention of multipotency and osteogenic differentiation on ordered and disordered nano-pits respectively. These and other observations highlight a potential role for nano topography in the stem cell niche.
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Affiliation(s)
- Lesley-Anne Turner
- Centre for Cell Engineering
- Institute of Molecular
- Cell and Systems Biology
- College of Medical
- Veterinary and Life Sciences
| | - Matthew J. Dalby
- Centre for Cell Engineering
- Institute of Molecular
- Cell and Systems Biology
- College of Medical
- Veterinary and Life Sciences
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106
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Fujino T, Taguchi Y, Komasa S, Sekino T, Tanaka M. Cell Differentiation on Nanoscale Features of a Titanium Surface: Effects of Deposition Time in NaOH Solution. J HARD TISSUE BIOL 2014. [DOI: 10.2485/jhtb.23.63] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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107
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Guo YP, Long T, Tang S, Guo YJ, Zhu ZA. Hydrothermal fabrication of magnetic mesoporous carbonated hydroxyapatite microspheres: biocompatibility, osteoinductivity, drug delivery property and bactericidal property. J Mater Chem B 2014; 2:2899-2909. [DOI: 10.1039/c3tb21829e] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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108
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Rodríguez-Velázquez E, Silva M, Taboada P, Mano JF, Suárez-Quintanilla D, Alatorre-Meda M. Enhanced Cell Affinity of Chitosan Membranes Mediated by Superficial Cross-Linking: A Straightforward Method Attainable by Standard Laboratory Procedures. Biomacromolecules 2013; 15:291-301. [DOI: 10.1021/bm401541v] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
| | | | | | - João F Mano
- 3B’s
Research Group, Biomaterials, Biodegradables and Biomimetics, University of Minho, Headquarters of
the European Institute of Excellence on Tissue Engineering and Regenerative
Medicine, AvePark, Zona Industrial
da Gandra, S. Claudio do Barco, 4806−909 Caldas das Taipas, Guimarães, Portugal
- ICVS/3B’s—PT
Government Associate Laboratory, Braga/Guimarães, Portugal
| | - David Suárez-Quintanilla
- International
Orthodontic Center (IOC), Avenida de
A Coruña 6, E-15706 Santiago de Compostela, Spain
| | - Manuel Alatorre-Meda
- 3B’s
Research Group, Biomaterials, Biodegradables and Biomimetics, University of Minho, Headquarters of
the European Institute of Excellence on Tissue Engineering and Regenerative
Medicine, AvePark, Zona Industrial
da Gandra, S. Claudio do Barco, 4806−909 Caldas das Taipas, Guimarães, Portugal
- ICVS/3B’s—PT
Government Associate Laboratory, Braga/Guimarães, Portugal
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109
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Tang Y, Zhao Y, Wang X, Lin T. Layer-by-layer assembly of silica nanoparticles on 3D fibrous scaffolds: enhancement of osteoblast cell adhesion, proliferation, and differentiation. J Biomed Mater Res A 2013; 102:3803-12. [PMID: 24288259 DOI: 10.1002/jbm.a.35050] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2013] [Revised: 11/25/2013] [Accepted: 11/27/2013] [Indexed: 01/26/2023]
Abstract
Silica nanoparticles were applied onto the fiber surface of an interbonded three-dimensional polycaprolactone fibrous tissue scaffold by an electrostatic layer-by-layer self-assembly technique. The nanoparticle layer was found to improve the fiber wettability and surface roughness. Osteoblast cells were cultured on the fibrous scaffolds to evaluate the biological compatibility. The silica nanoparticle coated scaffold showed enhanced cell attachment, proliferation, and alkaline phosphatase activities. The overall results suggested that interbonded fibrous scaffold with silica nanoparticulate coating could be a promising scaffolding candidate for various applications in bone repair and regeneration.
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Affiliation(s)
- Yanwei Tang
- Institute for Frontier Materials, Deakin University, Geelong, Victoria, 3216, Australia
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110
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Joddar B, Ito Y. Artificial niche substrates for embryonic and induced pluripotent stem cell cultures. J Biotechnol 2013; 168:218-28. [DOI: 10.1016/j.jbiotec.2013.04.021] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2012] [Revised: 04/13/2013] [Accepted: 04/29/2013] [Indexed: 01/27/2023]
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111
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Yu N, Prodanov L, Riet JT, Yang F, Walboomers XF, Jansen JA. Regulation of Periodontal Ligament Cell Behavior by Cyclic Mechanical Loading and Substrate Nanotexture. J Periodontol 2013; 84:1504-13. [DOI: 10.1902/jop.2012.120513] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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112
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Wu KC, Tseng CL, Wu CC, Kao FC, Tu YK, C So E, Wang YK. Nanotechnology in the regulation of stem cell behavior. SCIENCE AND TECHNOLOGY OF ADVANCED MATERIALS 2013; 14:054401. [PMID: 27877605 PMCID: PMC5090368 DOI: 10.1088/1468-6996/14/5/054401] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2013] [Accepted: 09/16/2013] [Indexed: 05/19/2023]
Abstract
Stem cells are known for their potential to repair damaged tissues. The adhesion, growth and differentiation of stem cells are likely controlled by the surrounding microenvironment which contains both chemical and physical cues. Physical cues in the microenvironment, for example, nanotopography, were shown to play important roles in stem cell fate decisions. Thus, controlling stem cell behavior by nanoscale topography has become an important issue in stem cell biology. Nanotechnology has emerged as a new exciting field and research from this field has greatly advanced. Nanotechnology allows the manipulation of sophisticated surfaces/scaffolds which can mimic the cellular environment for regulating cellular behaviors. Thus, we summarize recent studies on nanotechnology with applications to stem cell biology, including the regulation of stem cell adhesion, growth, differentiation, tracking and imaging. Understanding the interactions of nanomaterials with stem cells may provide the knowledge to apply to cell-scaffold combinations in tissue engineering and regenerative medicine.
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Affiliation(s)
- King-Chuen Wu
- Department of Anesthesiology, E-Da Hospital, I-Shou University, Kaohsiung, Taiwan
| | - Ching-Li Tseng
- Graduate Institute of Biomedical Materials and Tissue Engineering, Taipei Medical University, Taipei, Taiwan
| | - Chi-Chang Wu
- Graduate Institute of Biomedical Materials and Tissue Engineering, Taipei Medical University, Taipei, Taiwan
| | - Feng-Chen Kao
- Department of Orthopedics, E-Da Hospital, I-Shou University, Kaohsiung, Taiwan
| | - Yuan-Kun Tu
- Department of Orthopedics, E-Da Hospital, I-Shou University, Kaohsiung, Taiwan
| | - Edmund C So
- Department of Anesthesiology, Tainan Municipal An Nan Hospital, China Medical University, Tainan, Taiwan
| | - Yang-Kao Wang
- Graduate Institute of Biomedical Materials and Tissue Engineering, Taipei Medical University, Taipei, Taiwan
- Center for Neurotrauma and Neuroregeneration, Taipei Medical University, Taipei, Taiwan
- Medical Device Innovation Center, National Cheng-Kung University, Tainan, Taiwan
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113
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Birch MA, Tanaka M, Kirmizidis G, Yamamoto S, Shimomura M. Microporous “Honeycomb” Films Support Enhanced Bone Formation In Vitro. Tissue Eng Part A 2013; 19:2087-96. [DOI: 10.1089/ten.tea.2012.0729] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Affiliation(s)
- Mark A. Birch
- Institute for Cellular Medicine, Newcastle University, Newcastle upon Tyne, United Kingdom
| | - Masaru Tanaka
- Department of Biochemical Engineering, Graduate School of Science and Engineering, Yamagata University, Yonezawa, Japan
| | - George Kirmizidis
- Institute for Cellular Medicine, Newcastle University, Newcastle upon Tyne, United Kingdom
| | - Sadaaki Yamamoto
- Innovation Research Center for Fuel Cells, The University of Electro-Communications, Tokyo, Japan
| | - Masatsugu Shimomura
- Institute of Multidisciplinary Research for Advanced Materials (IMRAM), Tohoku University, Sendai, Japan
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114
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Liu W, Wei Y, Zhang X, Xu M, Yang X, Deng X. Lower extent but similar rhythm of osteogenic behavior in hBMSCs cultured on nanofibrous scaffolds versus induced with osteogenic supplement. ACS NANO 2013; 7:6928-6938. [PMID: 23906375 DOI: 10.1021/nn402118s] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Nanotopographic cues from biomaterials exert powerful effects on the osteogenic differentiation of mesenchymal stem cells because of their niche-mimicking features. However, the biological mechanisms underlying cell lineage determination by surface nanotopography have not been clearly elucidated. Here, we explored the osteogenic behavior of human bone marrow mesenchymal stem cells (hBMSCs) on poly-l-lactide nanofibers with different orientations and monitored the dynamic changes in global gene expression triggered by topographical cues. RT-PCR analysis of osteogenic marker genes and ALP activity assays demonstrated that hBMSCs cultured on random nanofibers showed enhanced osteogenic-specific fate compared with those on aligned nanofibers. Microarray analysis demonstrated a similar temporal change in gene expression patterns between hBMSCs cultured on random nanofibers and those induced with an osteogenic supplement (OS). However, the extent of osteogenic differentiation on the fibrous scaffold was much lower than that driven by chemical OS. In-depth pathway analysis revealed that focal adhesion kinase, TGF-β, Wnt, and MAPK pathways were involved in the activation of osteogenic differentiation in hBMSCs on random nanofibers. These findings suggested that a lower extent but similar rhythm of dynamic cellular behavior was induced on random nanofibers when compared with the OS condition and that mechanotransduction could trigger nonspecific and multilevel responses in hBMSCs. This study provides insight into the regulation of osteogenesis directed by substratum surfaces.
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Affiliation(s)
- Wentao Liu
- Department of Geriatric Dentistry, Peking University School and Hospital of Stomatology, Beijing 100081, People's Republic of China
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115
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Response of Human Mesenchymal Stem Cells to Patterned and Randomly Oriented Poly(Vinyl Alcohol) Nano-fibrous Scaffolds Surface-Modified with Arg-Gly-Asp (RGD) Ligand. Appl Biochem Biotechnol 2013; 171:1513-24. [DOI: 10.1007/s12010-013-0442-5] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2013] [Accepted: 08/06/2013] [Indexed: 10/26/2022]
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116
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Cheng ZA, Zouani OF, Glinel K, Jonas AM, Durrieu MC. Bioactive chemical nanopatterns impact human mesenchymal stem cell fate. NANO LETTERS 2013; 13:3923-9. [PMID: 23905702 DOI: 10.1021/nl4020149] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
We present a method of preparing and characterizing nanostructured bioactive motifs using a combination of nanoimprint lithography and surface functionalization. Nanodots were fabricated on silicon surfaces and modified with a cell-adhesive RGD peptide for studies in human mesenchymal stem cell adhesion and differentiation. We report that bioactive nanostructures induce mature focal adhesions on human mesenchymal stem cells with an impact on their behavior and dynamics specifically in terms of cell spreading, cell-material contact, and cell differentiation.
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Affiliation(s)
- Zhe A Cheng
- Institut Européen de la Chimie et Biologie, CBMN-UMR5248, Université de Bordeaux 1, Pessac, France
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117
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Tonazzini I, Meucci S, Faraci P, Beltram F, Cecchini M. Neuronal differentiation on anisotropic substrates and the influence of nanotopographical noise on neurite contact guidance. Biomaterials 2013; 34:6027-36. [DOI: 10.1016/j.biomaterials.2013.04.039] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2013] [Accepted: 04/21/2013] [Indexed: 10/26/2022]
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118
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Tatkiewicz WI, Seras-Franzoso J, García-Fruitós E, Vazquez E, Ventosa N, Peebo K, Ratera I, Villaverde A, Veciana J. Two-dimensional microscale engineering of protein-based nanoparticles for cell guidance. ACS NANO 2013; 7:4774-4784. [PMID: 23705583 DOI: 10.1021/nn400907f] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Cell responses, such as positioning, morphological changes, proliferation, and apoptosis, are the result of complex chemical, topographical, and biological stimuli. Here we show the macroscopic responses of cells when nanoscale profiles made with inclusion bodies (IBs) are used for the 2D engineering of biological interfaces at the microscale. A deep statistical data treatment of fibroblasts cultivated on supports patterned with green fluorescent protein and human basic fibroblast growth factor-derived IBs demonstrates that these cells preferentially adhere to the IB areas and align and elongate according to specific patterns. These findings prove the potential of surface patterning with functional IBs as protein-based nanomaterials for tissue engineering.
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Affiliation(s)
- Witold I Tatkiewicz
- Department of Molecular Nanoscience and Organic Materials, Institut de Ciencia de Materials de Barcelona (CSIC), Bellaterra, 08193 Barcelona, Spain
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119
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Seras-Franzoso J, Tsimbouri PM, Burgess KV, Unzueta U, Garcia-Fruitos E, Vazquez E, Villaverde A, Dalby MJ. Topographically targeted osteogenesis of mesenchymal stem cells stimulated by inclusion bodies attached to polycaprolactone surfaces. Nanomedicine (Lond) 2013; 9:207-20. [PMID: 23631503 DOI: 10.2217/nnm.13.43] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
AIM Bacterial inclusion bodies (IBs) are nanostructured (submicron), pseudospherical proteinaceous particles produced in recombinant bacteria resulting from ordered protein aggregation. Being mechanically stable, several physicochemical and biological properties of IBs can be tuned by appropriate selection of the producer strain and of culture conditions. It has been previously shown that IBs favor cell adhesion and surface colonization by mammalian cell lines upon decoration on materials surfaces, but how these biomaterials could influence the behavior of mesenchymal stem cells remains to be explored. MATERIALS & METHODS Here, the authors vary topography, stiffness and wettability using the IBs to decorate polycaprolactone surfaces on which mesenchymal stem cells are cultured. RESULTS The authors show that these topographies can be used to specifically target osteogenesis from mesenchymal stem cells, and through metabolomics, they show that the cells have increased energy demand during this bone-related differentiation. CONCLUSION IBs as topographies can be used not only to direct cell proliferation but also to target differentiation of mesenchymal stem cells.
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Affiliation(s)
- Joaquin Seras-Franzoso
- Institut de Biotecnologia i de Biomedicina, Universitat Autònoma de Barcelona, Bellaterra, Barcelona, 08193, Spain
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120
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Svensson S, Suska F, Emanuelsson L, Palmquist A, Norlindh B, Trobos M, Bäckros H, Persson L, Rydja G, Ohrlander M, Lyvén B, Lausmaa J, Thomsen P. Osseointegration of titanium with an antimicrobial nanostructured noble metal coating. NANOMEDICINE-NANOTECHNOLOGY BIOLOGY AND MEDICINE 2013; 9:1048-56. [PMID: 23639678 DOI: 10.1016/j.nano.2013.04.009] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/20/2012] [Revised: 03/15/2013] [Accepted: 04/15/2013] [Indexed: 12/31/2022]
Abstract
UNLABELLED Nanometer scale surface features on implants and prostheses can potentially be used to enhance osseointegration and may also add further functionalities, such as infection resistance, to the implant. In this study, a nanostructured noble metal coating consisting of palladium, gold and silver, never previously used in bone applications, was applied to machined titanium screws to evaluate osseointegration after 6 and 12 weeks in rabbit tibiae and femurs. Infection resistance was confirmed by in vitro adhesion test. A qualitatively and quantitatively similar in vivo bone response was observed for the coated and uncoated control screws, using histology, histomorphometry and electron microscopy. The bone-implant interface analysis revealed an extensive bone formation and direct bone-implant contact. These results demonstrate that the nanostructured noble metal coating with antimicrobial properties promotes osseointegration and may therefore be used to add extra implant functionality in the form of increased resistance to infection without the use of antibiotics. FROM THE CLINICAL EDITOR The authors of this paper demonstrate that nanostructured noble metal coating of implants and prostheses used in orthopedic procedures promotes osseointegration and may be used to add extra implant functionality in the form of increased resistance to infection without the use of antibiotics.
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Affiliation(s)
- Sara Svensson
- BIOMATCELL VINN Excellence Center of Biomaterials and Cell Therapy, Göteborg, Sweden; Department of Biomaterials, Sahlgrenska Academy at University of Gothenburg, Göteborg, Sweden.
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121
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Loiselle AE, Wei L, Faryad M, Paul EM, Lewis GS, Gao J, Lakhtakia A, Donahue HJ. Specific biomimetic hydroxyapatite nanotopographies enhance osteoblastic differentiation and bone graft osteointegration. Tissue Eng Part A 2013; 19:1704-12. [PMID: 23510012 DOI: 10.1089/ten.tea.2012.0560] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
Impaired healing of cortical bone grafts represents a significant clinical problem. Cadaveric bone grafts undergo extensive chemical processing to decrease the risk of disease transmission; however, these processing techniques alter the bone surface and decrease the osteogenic potential of cells at the healing site. Extensive work has been done to optimize the surface of bone grafts, and hydroxyapatite (HAP) and nanotopography both increase osteoblastic differentiation. HAP is the main mineral component of bone and can enhance osteoblastic differentiation and bone implant healing in vivo, while nanotopography can enhance osteoblastic differentiation, adhesion, and proliferation. This is the first study to test the combined effects of HAP and nanotopographies on bone graft healing. With the goal of identifying the optimized surface features to improve bone graft healing, we tested the hypothesis that HAP-based nanotopographic resurfacing of bone grafts improves integration of cortical bone grafts by enhancing osteoblastic differentiation. Here we show that osteoblastic cells cultured on processed bones coated with specific-scale (50-60 nm) HAP nanotopographies display increased osteoblastic differentiation compared to cells on uncoated bone, bones coated with poly-l-lactic acid nanotopographies, or other HAP nanotopographies. Further, bone grafts coated with 50-60-nm HAP exhibited increased formation of new bone and improved healing, with mechanical properties equivalent to live autografts. These data indicate the potential for specific HAP nanotopographies to not only increase osteoblastic differentiation but also improve bone graft incorporation, which could significantly increase patient quality of life after traumatic bone injuries or resection of an osteosarcoma.
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Affiliation(s)
- Alayna E Loiselle
- Division of Musculoskeletal Sciences, College of Medicine, Pennsylvania State University, Hershey, Pennsylvania, USA
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122
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Das RK, Zouani OF, Labrugère C, Oda R, Durrieu MC. Influence of nanohelical shape and periodicity on stem cell fate. ACS NANO 2013; 7:3351-3361. [PMID: 23451935 DOI: 10.1021/nn4001325] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Microenvironments such as protein composition, physical features, geometry, and elasticity play important roles in stem cell lineage specification. The components of the extracellular matrix are known to subsequently assemble into fibrillar networks in vivo with defined periodicity. However, the effect of the most critical parameter, which involves the periodicity of these fibrillar networks, on the stem cell fate is not yet investigated. Here, we show the effect of synthetic fibrillar networks patterned with nanometric periodicities, using bottom-up approaches, on the response of stem cells. We have used helical organic nanoribbons based on self-assemblies of Gemini-type amphiphiles to access chiral silica nanoribbons with two different shapes and periodicities (twisted ribbons and helical ribbons) from the same native self-assembled organic nanostructure. We demonstrate the covalent grafting of these silica nanoribbons onto activated glass substrates and the influence of this programmed isotropically oriented matrix to direct the commitment of human mesenchymal stem cells (hMSCs) into osteoblast lineage in vitro, free of osteogenic-inducing media. The specific periodicity of 63 nm (±5 nm) with helical ribbon shape induces specific cell adhesion through the fibrillar focal adhesion formation and leads to stem cell commitment into osteoblast lineage. In contrast, the matrix of periodicity 100 nm (±15 nm) with twisted ribbon shape does not lead to osteoblast commitment. The inhibition of non-muscle myosin II with blebbistatin is sufficient to block this osteoblast commitment on helical nanoribbon matrix, demonstrating that stem cells interpret the nanohelical shape and periodicity environment physically. These results indicate that hMSCs could interpret nanohelical shape and periodicity in the same way they sense microenvironment elasticity. This provides a promising tool to promote hMSC osteogenic capacity, which can be exploited in a 3D scaffold for bone tissue engineering.
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Affiliation(s)
- Rajat K Das
- UMR 5248 CBMN, CNRS-Université de Bordeaux-ENITAB, Institut Européen de Chimie et Biologie, 2 Rue Robert Escarpit, F-33607 Pessac, France
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123
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Guo YJ, Long T, Chen W, Ning CQ, Zhu ZA, Guo YP. Bactericidal property and biocompatibility of gentamicin-loaded mesoporous carbonated hydroxyapatite microspheres. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2013; 33:3583-91. [PMID: 23910253 DOI: 10.1016/j.msec.2013.04.021] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/22/2012] [Revised: 03/20/2013] [Accepted: 04/08/2013] [Indexed: 01/27/2023]
Abstract
Implant-associated infection is a serious problem in orthopaedic surgery. One of the most effective ways is to introduce a controlled antibiotics delivery system into the bone filling materials, achieving sustained release of antibiotics in the local sites of bone defects. In the present work, mesoporous carbonated hydroxyapatite microspheres (MCHMs) loaded with gentamicin have been fabricated according to the following stages: (i) the preparation of the MCHMs by hydrothermal method using calcium carbonate microspheres as sacrificial templates, and (ii) loading gentamicin into the MCHMs. The MCHMs exhibit the 3D hierarchical nanostructures constructed by nanoplates as building blocks with mesopores and macropores, which make them have the higher drug loading efficiency of 70-75% than the conventional hydroxyapatite particles (HAPs) of 20-25%. The gentamicin-loaded MCHMs display the sustained drug release property, and the controlled release of gentamicin can minimize significantly bacterial adhesion and prevent biofilm formation against S. epidermidis. The biocompatibility tests by using human bone marrow stromal cells (hBMSCs) as cell models indicate that the gentamicin-loaded MCHMs have as excellent biocompatibility as the HAPs, and the dose of the released gentamicin from the MCHMs has no toxic effects on the hBMSCs. Hence, the gentamicin-loaded MCHMs can be served as a simple, non-toxic and controlled drug delivery system to treat bone infections.
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Affiliation(s)
- Ya-Jun Guo
- The Key Laboratory of Resource Chemistry of Ministry of Education, College of Life and Environmental Science, Shanghai Normal University, Shanghai 200234, China
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124
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Singh AV, Patil R, Thombre DK, Gade WN. Micro-nanopatterning as tool to study the role of physicochemical properties on cell-surface interactions. J Biomed Mater Res A 2013; 101:3019-32. [PMID: 23559501 DOI: 10.1002/jbm.a.34586] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2012] [Revised: 12/27/2012] [Accepted: 12/31/2012] [Indexed: 11/09/2022]
Abstract
The current nano-biotechnologies interfacing synthetic materials and cell biology requires a better understanding of cell-surface interactions on the micro-to-nanometer scale. Cell-substrate interactions are mediated by the presence of proteins adsorbed from biological fluids to the substrate. The effect of nanotopography and surface chemistry on protein adsorption as well as the mediation effect on subsequent cellular communication with substratum is not well documented. This review discusses the role of physicochemical properties of cell-surface interactions and state-of-the-art methods currently available for micro-nanoscale surface fabrication and patterning. We also briefly discuss the current surface patterning techniques that allow the combination of a fine and independent control on nanotopography and chemistry to understand the effect of surface nanoscale substrate morphology on cell-surface interactions which has never been realized in previous reports. In addition, we discuss the influence of various chemical patterning and modulation of the nano-topography of surfaces on cell functionality and phenotype.
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Affiliation(s)
- Ajay Vikram Singh
- Department of Biomedical Engineering, Rensselaer Polytechnic Institute, Troy, New York 12180-3590; Center for Biotechnology and Interdisciplinary Studies, Room 2145, Rensselaer Polytechnic Institute, 110 8th Street, Troy, New York 12180
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125
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Sista S, Nouri A, Li Y, Wen C, Hodgson PD, Pande G. Cell biological responses of osteoblasts on anodized nanotubular surface of a titanium-zirconium alloy. J Biomed Mater Res A 2013; 101:3416-30. [PMID: 23559548 DOI: 10.1002/jbm.a.34638] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2012] [Revised: 01/29/2013] [Accepted: 01/31/2013] [Indexed: 12/18/2022]
Abstract
Anodization of titanium and its alloys, under controlled conditions, generates a nanotubular architecture on the material surface. The biological consequences of such changes are poorly understood, and therefore, we have analyzed the cellular and molecular responses of osteoblasts that were plated on nanotubular anodized surface of a titanium-zirconium (TiZr) alloy. Upon comparing these results with those obtained on acid etched and polished surfaces of the same alloy, we observed a significant increase in adhesion and proliferation of cells on anodized surfaces as compared to acid etched or polished surface. The expression of genes related to cell adhesion was high only on anodized TiZr, but that of genes related to osteoblast differentiation and osteocalcin protein and extracellular matrix secretion were higher on both anodized and acid etched surfaces. Examination of surface morphology, topography, roughness, surface area and wettability using scanning electron microscopy, atomic force microscopy, and contact angle goniometry, showed that higher surface area, hydrophilicity, and nanoscale roughness of nanotubular TiZr surfaces, which were generated specifically by the anodization process, could strongly enhance the adhesion and proliferation of osteoblasts. We propose that biological properties of known bioactive titanium alloys can be further enhanced by generating nanotubular surfaces using anodization.
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Affiliation(s)
- Subhash Sista
- CSIR - Centre for Cellular and Molecular Biology, Uppal Road, Hyderabad 500 007, India; Institute for Frontier Materials, Deakin University, Pigdons Road, Waurn Ponds, Geelong, Victoria 3217, Australia
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126
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In vitro mesenchymal stem cell responses on laser-welded NiTi alloy. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2013; 33:1344-54. [DOI: 10.1016/j.msec.2012.12.035] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/30/2012] [Revised: 08/14/2012] [Accepted: 12/04/2012] [Indexed: 11/19/2022]
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127
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Lim JY, Siedlecki CA, Donahue HJ. Nanotopographic cell culture substrate: polymer-demixed nanotextured films under cell culture conditions. Biores Open Access 2013; 1:252-5. [PMID: 23515067 PMCID: PMC3559240 DOI: 10.1089/biores.2012.0255] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Modulating physical cell culture environments via nanoscale substrate topographic modification has recently been of significant interest in regenerative medicine. Many studies have utilized a polymer-demixing technique to produce nanotextured films and showed that cellular adhesion, proliferation, and differentiation could be regulated by the shape and scale of the polymer-demixed nanotopographies. However, little attention has been paid to the topographic fidelity of the polymer-demixed films when exposed to cell culture conditions. In this brief article, two polymer-demixing systems were employed to assess topographic changes in polymer-demixed films after fibronectin (FN) extracellular matrix protein adsorption and after incubation in phosphate-buffered saline at 37°C. We showed that FN adsorption induced very small variations (<2 nm) to the polystyrene/polybromostyrene (PS/PBrS)-demixed nanoisland textures, not substantially altering the nanotopographies given by the polymer demixing. In addition, poly(L-lactic acid)/PS (PLLA/PS)-demixed nanoisland topographies using PLLA with M w=50×10(3) did not show notable degradation up to day 24.
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Affiliation(s)
- Jung Yul Lim
- Department of Mechanical and Materials Engineering, University of Nebraska-Lincoln , Lincoln, Nebraska
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128
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Menicucci G, Mussano F, Schierano G, Rizzati A, Aimetti M, Gassino G, Traini T, Carossa S. Healing properties of implants inserted concomitantly with anorganic bovine bone. A histomorphometric human study. Aust Dent J 2013; 58:57-66. [PMID: 23441793 DOI: 10.1111/adj.12032] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/09/2012] [Indexed: 11/29/2022]
Abstract
BACKGROUND The present prospective, randomized, double-blind study evaluated the bone-forming process around implants inserted simultaneously with anorganic bovine bone (ABB) in sinus grafting. METHODS A total of 18 threaded mini-implants with Osseotite (O) and Nanotite (N) surfaces were placed in seven patients (nine sites). After 12 months, the implants were retrieved and processed for histological analysis. A total of 18 cutting and grinding sections were investigated with bright-field light microscopy, circularly polarized light microscopy (CPLM), confocal scanning laser microscope (CSLM), and scanning electron microscope (SEM) with energy dispersive spectrometer (EDS). RESULTS The bone-to-implant contact rate in native crestal bone was 62.6 ± 0.4% for N implants and 54.3 ± 0.5% for the O implants (p = 0.001). The collagen fibre density, as assessed by CPLM, was 79.8 ± 6.0 nm for the N group and 74.6 ± 4.6 nm for the O group (p < 0.05). Line scan EDS starting from ABB to newly formed bone showed a decrease in calcium content and an increase of carbon while phosphorus content was constant. CONCLUSIONS While the N surface improved the peri-implant endosseous healing properties in the native bone, when compared to the O surface, it did not improve the healing properties in the bone-graft area.
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Affiliation(s)
- G Menicucci
- Department of Biomedical Sciences and Human Oncology, Dental School, University of Turin, Turin, Italy
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129
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Higuchi A, Ling QD, Chang Y, Hsu ST, Umezawa A. Physical Cues of Biomaterials Guide Stem Cell Differentiation Fate. Chem Rev 2013; 113:3297-328. [DOI: 10.1021/cr300426x] [Citation(s) in RCA: 335] [Impact Index Per Article: 30.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Akon Higuchi
- Department of Chemical and Materials
Engineering, National Central University, Jhongli, Taoyuan 32001, Taiwan
- Department of Reproductive Biology, National Research Institute for Child Health and Development, 2-10-1 Okura,
Setagaya-ku, Tokyo 157-8535, Japan
- Cathay Medical Research Institute, Cathay General Hospital, No. 32, Ln 160, Jian-Cheng Road, Hsi-Chi City, Taipei 221, Taiwan
| | - Qing-Dong Ling
- Cathay Medical Research Institute, Cathay General Hospital, No. 32, Ln 160, Jian-Cheng Road, Hsi-Chi City, Taipei 221, Taiwan
- Institute of Systems Biology
and Bioinformatics, National Central University, No. 300 Jhongda Rd., Jhongli, Taoyuan 32001, Taiwan
| | - Yung Chang
- Department of Chemical Engineering, R&D Center for Membrane Technology, Chung Yuan Christian University, 200 Chung-Bei Rd., Jhongli, Taoyuan 320, Taiwan
| | - Shih-Tien Hsu
- Taiwan Landseed Hospital, 77 Kuangtai Road, Pingjen City, Tao-Yuan
County 32405, Taiwan
| | - Akihiro Umezawa
- Department of Reproductive Biology, National Research Institute for Child Health and Development, 2-10-1 Okura,
Setagaya-ku, Tokyo 157-8535, Japan
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130
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Prodanov L, Lamers E, Domanski M, Luttge R, Jansen JA, Walboomers XF. The effect of nanometric surface texture on bone contact to titanium implants in rabbit tibia. Biomaterials 2013; 34:2920-7. [PMID: 23380354 DOI: 10.1016/j.biomaterials.2013.01.027] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2012] [Accepted: 01/04/2013] [Indexed: 12/24/2022]
Abstract
Designing biomaterial surfaces to control the reaction of the surrounding tissue is still considered to be a primary issue, which needs to be addressed systematically. Although numerous in vitro studies have described different nano-metrically textured substrates capable to influence bone cellular response, in vivo studies validating this phenomenon have not been reported. In this study, nano-grooved silicon stamps were produced by laser interference lithography (LIL) and reactive ion etching (RIE) and were subsequently transferred onto the surface of 5 mm diameter Titanium (Ti) discs by nanoimprint lithography (NIL). Patterns with pitches of 1000 nm (500 nm ridge and groove, 150 nm depth), 300 nm (150 nm ridge and groove, 120 nm depth; as well as a 1:3 ratio of 75 nm ridge and 225 nm groove, 120 nm depth) and 150 nm (75 nm ridge and groove, 30 nm depth) were created. These samples were implanted in a rabbit tibia cortical bone. Histological evaluation and histomorphometric measurements were performed, comparing each sample to conventional grit-blasted/acid-etched (GAE) titanium controls. Results showed a significantly higher bone-to-implant contact at 4 weeks for the 300 nm (1:3) specimens, compared to GAE (p = 0.006). At 8 weeks, there was overall more bone contact compared to 4 weeks. However, no significant differences between the nano-textured samples and the GAE occurred. Further studies will need to address biomechanical testing and the use of trabecular bone models.
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Affiliation(s)
- Ljupcho Prodanov
- Radboud University Nijmegen Medical Centre, Department of Biomaterials, Nijmegen, The Netherlands
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131
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Wazen RM, Kuroda S, Nishio C, Sellin K, Brunski JB, Nanci A. Gene expression profiling and histomorphometric analyses of the early bone healing response around nanotextured implants. Nanomedicine (Lond) 2013; 8:1385-95. [PMID: 23286527 DOI: 10.2217/nnm.12.167] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
UNLABELLED While in vitro studies have shown that nanoscale surface modifications influence cell fate and activity, there is little information on how they modulate healing at the bone-implant interface. AIM This study aims to investigate the effect of nanotopography at early time intervals when critical events for implant integration occur. MATERIALS & METHODS Untreated and sulfuric acid/hydrogen peroxide-treated machined-surface titanium alloy implants were placed in rat tibiae. Samples were processed for DNA microarray analysis and histomorphometry. RESULTS At both 3 and 5 days, the gene expression profile of the healing tissue around nanotextured implants differed from that around machined-surface implants or control empty holes, and were accompanied by an increase in bone-implant contact on day 5. While some standard pathways such as the immune response predominated, a number of unclassified genes were also implicated. CONCLUSION Nanotexture elicits an initial gene response that is more complex than suspected so far and favors healing at the bone-implant interface.
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Affiliation(s)
- Rima M Wazen
- Laboratory for the Study of Calcified Tissues & Biomaterials, Department of Stomatology, Université de Montréal, PO Box 6128, Station Centre-Ville, Montreal, QC, H3C 3J7, Canada
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132
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Polycaprolactone scaffolds or anisotropic particles: The initial solution temperature dependence in a gelatin particle-leaching method. POLYMER 2013. [DOI: 10.1016/j.polymer.2012.11.001] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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133
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Saiz E, Zimmermann EA, Lee JS, Wegst UG, Tomsia AP. Perspectives on the role of nanotechnology in bone tissue engineering. Dent Mater 2013; 29:103-15. [PMID: 22901861 PMCID: PMC3638810 DOI: 10.1016/j.dental.2012.08.001] [Citation(s) in RCA: 72] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2012] [Revised: 07/28/2012] [Accepted: 08/01/2012] [Indexed: 12/13/2022]
Abstract
OBJECTIVE This review surveys new developments in bone tissue engineering, specifically focusing on the promising role of nanotechnology and describes future avenues of research. METHODS The review first reinforces the need to fabricate scaffolds with multi-dimensional hierarchies for improved mechanical integrity. Next, new advances to promote bioactivity by manipulating the nanolevel internal surfaces of scaffolds are examined followed by an evaluation of techniques using scaffolds as a vehicle for local drug delivery to promote bone regeneration/integration and methods of seeding cells into the scaffold. RESULTS Through a review of the state of the field, critical questions are posed to guide future research toward producing materials and therapies to bring state-of-the-art technology to clinical settings. SIGNIFICANCE The development of scaffolds for bone regeneration requires a material able to promote rapid bone formation while possessing sufficient strength to prevent fracture under physiological loads. Success in simultaneously achieving mechanical integrity and sufficient bioactivity with a single material has been limited. However, the use of new tools to manipulate and characterize matter down to the nano-scale may enable a new generation of bone scaffolds that will surpass the performance of autologous bone implants.
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Affiliation(s)
- Eduardo Saiz
- Center for Advanced Structural Ceramics, Department of Materials, Imperial College London, Exhibition Road, London, SW7 2AZ UK
| | - Elizabeth A. Zimmermann
- Materials Sciences Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720 USA
| | - Janice S. Lee
- Department of Oral & Maxillofacial Surgery, University of California, San Francisco, 513 Parnassus Avenue, San Francisco, CA 94143 USA
| | - Ulrike G.K. Wegst
- Thayer School of Engineering, Dartmouth College, Hanover, NH 03755 USA
| | - Antoni P. Tomsia
- Materials Sciences Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720 USA
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134
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Akhavan O, Ghaderi E. Differentiation of human neural stem cells into neural networks on graphene nanogrids. J Mater Chem B 2013; 1:6291-6301. [DOI: 10.1039/c3tb21085e] [Citation(s) in RCA: 139] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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135
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Mitra J, Tripathi G, Sharma A, Basu B. Scaffolds for bone tissue engineering: role of surface patterning on osteoblast response. RSC Adv 2013. [DOI: 10.1039/c3ra23315d] [Citation(s) in RCA: 78] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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136
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The effect of laminin-1-doped nanoroughened implant surfaces: gene expression and morphological evaluation. Int J Biomater 2012; 2012:305638. [PMID: 23304151 PMCID: PMC3530800 DOI: 10.1155/2012/305638] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2012] [Accepted: 10/13/2012] [Indexed: 11/17/2022] Open
Abstract
Aim. This study aimed to observe the morphological and molecular effect of laminin-1 doping to nanostructured implant surfaces in a rabbit model. Materials and Methods. Nanostructured implants were coated with laminin-1 (test; dilution, 100 μg/mL) and inserted into the rabbit tibiae. Noncoated implants were used as controls. After 2 weeks of healing, the implants were removed and subjected to morphological analysis using scanning electron microscopy (SEM) and gene expression analysis using the real-time reverse transcriptase-polymerase chain reaction (RT-PCR). Results. SEM revealed bony tissue attachment for both control and test implants. Real-time RT-PCR analysis showed that the expression of osteoblast markers RUNX-2, osteocalcin, alkaline phosphatase, and collagen I was higher (1.62-fold, 1.53-fold, 1.97-fold, and 1.04-fold, resp.) for the implants modified by laminin-1 relative to the control. All osteoclast markers investigated in the study presented higher expression on the test implants than controls as follows: tartrate-resistant acid phosphatase (1.67-fold), calcitonin receptor (1.35-fold), and ATPase (1.25-fold). The test implants demonstrated higher expression of inflammatory markers interleukin-10 (1.53-fold) and tumour necrosis factor-α (1.61-fold) relative to controls. Conclusion. The protein-doped surface showed higher gene expression of typical genes involved in the osseointegration cascade than the control surface.
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137
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Kaivosoja E, Barreto G, Levón K, Virtanen S, Ainola M, Konttinen YT. Chemical and physical properties of regenerative medicine materials controlling stem cell fate. Ann Med 2012; 44:635-50. [PMID: 21568670 DOI: 10.3109/07853890.2011.573805] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
Regenerative medicine is a multidisciplinary field utilizing the potential of stem cells and the regenerative capability of the body to restore, maintain, or enhance tissue and organ functions. Stem cells are unspecialized cells that can self-renew but also differentiate into several somatic cells when subjected the appropriate environmental cues. The ability to reliably direct stem cell fate would provide tremendous potential for basic research and clinical therapies. Proper tissue function and regeneration rely on the spatial and temporal control of biophysical and biochemical cues, including soluble molecules, cell-cell contacts, cell-extracellular matrix contacts, and physical forces. The mechanisms involved remain poorly understood. This review focuses on the stem cell-extracellular matrix interactions by summarizing the observations of the effects of material variables (such as overall architecture, surface topography, charge, ζ-potential, surface energy, and elastic modulus) on the stem cell fate. It also deals with the mechanisms underlying the effects of these extrinsic, material variables. Insight in the environmental interactions of the stem cells is crucial for the development of new material-based approaches for cell culture experiments and future experimental and clinical regenerative medicine applications.
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Affiliation(s)
- Emilia Kaivosoja
- Department of Medicine, Institute of Clinical Medicine, Helsinki University Central Hospital, Helsinki, Finland
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138
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Controlling self-renewal and differentiation of stem cells via mechanical cues. J Biomed Biotechnol 2012; 2012:797410. [PMID: 23091358 PMCID: PMC3471035 DOI: 10.1155/2012/797410] [Citation(s) in RCA: 131] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2012] [Revised: 07/20/2012] [Accepted: 07/23/2012] [Indexed: 12/11/2022] Open
Abstract
The control of stem cell response in vitro, including self-renewal and lineage commitment, has been proved to be directed by mechanical cues, even in the absence of biochemical stimuli. Through integrin-mediated focal adhesions, cells are able to anchor onto the underlying substrate, sense the surrounding microenvironment, and react to its properties. Substrate-cell and cell-cell interactions activate specific mechanotransduction pathways that regulate stem cell fate. Mechanical factors, including substrate stiffness, surface nanotopography, microgeometry, and extracellular forces can all have significant influence on regulating stem cell activities. In this paper, we review all the most recent literature on the effect of purely mechanical cues on stem cell response, and we introduce the concept of "force isotropy" relevant to cytoskeletal forces and relevant to extracellular loads acting on cells, to provide an interpretation of how the effects of insoluble biophysical signals can be used to direct stem cells fate in vitro.
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139
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Abstract
Nanotechnology applications in medicine are poised to revolutionize the prevention, diagnosis, and treatment of disease. Researchers, scientists, and physicians across various disciplines and specialties are working to develop innovative clinical tools that incorporate materials, devices, and systems engineered at the nanoscale. Surgical specialties, such as orthopedic surgery, are among those developing nanotechnology applications for clinical use. Orthopedic surgery addresses disorders of the musculoskeletal system including repair by both surgical and nonsurgical means of tendons, ligaments, muscles, bones, and nerves injured due to trauma or disease. Medical interventions targeting orthopedic conditions are becoming increasingly important given current epidemiologic trends in these conditions. The purpose of this article is to highlight current and emerging applications of nanotechnology in orthopedic surgery. Selected, clinically relevant examples are described in the categories of drugs and drug delivery, imaging, sensors, biomaterials, diagnostics, and novel therapeutics. Several promising nanomedicine applications that target orthopedic conditions are in various stages of development from basic scientific research to clinical trials to product development and commercialization. Nanotechnology applications aimed at the prevention, diagnosis, and treatment of orthopedic conditions hold great promise for improving the standard of care in orthopedic surgery in the 21st century.
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Affiliation(s)
- Sara A. Brenner
- UAlbany College of Nanoscale Science and Engineering, Nanobioscience Constellation, 257 Fuller Road, NanoFab East, Room 4406, Albany, NY 12203 e-mail:
| | - John F. Ling
- Indiana University School of Medicine, MS1, 340 West 10th Street, Suite 6200, Indianapolis, IN 46202-3082 e-mail:
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140
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Zhang W, Li Z, Liu Y, Ye D, Li J, Xu L, Wei B, Zhang X, Liu X, Jiang X. Biofunctionalization of a titanium surface with a nano-sawtooth structure regulates the behavior of rat bone marrow mesenchymal stem cells. Int J Nanomedicine 2012; 7:4459-72. [PMID: 22927760 PMCID: PMC3422101 DOI: 10.2147/ijn.s33575] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2012] [Indexed: 11/23/2022] Open
Abstract
BACKGROUND The topography of an implant surface can serve as a powerful signaling cue for attached cells and can enhance the quality of osseointegration. A series of improved implant surfaces functionalized with nanoscale structures have been fabricated using various methods. METHODS In this study, using an H(2)O(2) process, we fabricated two size-controllable sawtooth-like nanostructures with different dimensions on a titanium surface. The effects of the two nano-sawtooth structures on rat bone marrow mesenchymal stem cells (BMMSCs) were evaluated without the addition of osteoinductive chemical factors. RESULTS These new surface modifications did not adversely affect cell viability, and rat BMMSCs demonstrated a greater increase in proliferation ability on the surfaces of the nano-sawtooth structures than on a control plate. Furthermore, upregulated expression of osteogenic-related genes and proteins indicated that the nano-sawtooth structures promote osteoblastic differentiation of rat BMMSCs. Importantly, the large nano-sawtooth structure resulted in the greatest cell responses, including increased adhesion, proliferation, and differentiation. CONCLUSION The enhanced adhesion, proliferation, and osteogenic differentiation abilities of rat BMMSCs on the nano-sawtooth structures suggest the potential to induce improvements in bone-titanium integration in vivo. Our study reveals the key role played by the nano-sawtooth structures on a titanium surface for the fate of rat BMMSCs and provides insights into the study of stem cell-nanostructure relationships and the related design of improved biomedical implant surfaces.
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Affiliation(s)
- Wenjie Zhang
- Department of Prosthodontics, Ninth People's Hospital Affiliated to Shanghai Jiao Tong University, School of Medicine, Shanghai, China
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141
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Maclaine SE, Gadhari N, Pugin R, Meek RMD, Liley M, Dalby MJ. Optimizing the osteogenicity of nanotopography using block co-polymer phase separation fabrication techniques. J Orthop Res 2012; 30:1190-7. [PMID: 22294345 DOI: 10.1002/jor.22076] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/06/2011] [Accepted: 01/03/2012] [Indexed: 02/04/2023]
Abstract
Both temporary and permanent orthopedic implants have, by default or design, surface chemistry, and topography. There is increasing evidence that controlling nanodisorder can result in increased osteogenesis. Block co-polymer phase separation can be used to fabricate a nanotopography exhibiting a controlled level of disorder, both reproducibly and cost-effectively. Two different topographies, produced through the use of block co-polymer phase separation, were embossed onto the biodegradable thermoplastic, polycaprolactone (PCL). Analysis of the topography itself was undertaken with atomic force microscopy, and the topography's effect on human osteoblasts studied through the use of immunocytochemistry and fluorescence microscopy. Planar controls had a surface roughness 0.93 nm, and the substrates a high fidelity transfer of a disordered pattern of 14 and 18 nm. Cytoskeletal organization and adhesion, and increased expression of Runx2 were significantly greater on the smallest nanotopography. Expression of osteopontin and osteocalcin protein, and alizarin red staining of bone nodules were greatest on the smallest feature nanopatterns. Highly osteogenic, disordered nanotopographies can be manufactured into thermoplastics in a rapid and cost-effective way through the use of block co-polymer phase separation. Osteogenic topographies reproducibly and cost-effectively produced have a potentially useful application to the fields of implant technology and regenerative orthopedics.
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Affiliation(s)
- Sarah E Maclaine
- Centre for Cell Engineering, Institute of Molecular, Cell & Systems Biology, College of Medical, Veterinary & Life Sciences, Joseph Black Building, University of Glasgow, Glasgow G12 8QQ, UK.
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142
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Yu X, Ning C, Li J, Huang S, Guo Y, Deng F. In vivo
evaluation of novel amine‐terminated nanopore Ti surfaces. J Biomed Mater Res A 2012; 100:3428-35. [PMID: 22791696 DOI: 10.1002/jbm.a.34269] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2011] [Revised: 03/21/2012] [Accepted: 05/10/2012] [Indexed: 11/06/2022]
Affiliation(s)
- Xiaolin Yu
- Guanghua School and Hospital of Stomatology and Institute of Stomatological Research, Sun Yat‐sen University, Guangzhou, China
| | - Chengyun Ning
- College of Materials Science and Technology, South China University of Technology, Guangzhou, China
| | - Jingping Li
- Guanghua School and Hospital of Stomatology and Institute of Stomatological Research, Sun Yat‐sen University, Guangzhou, China
| | - Shanshan Huang
- College of Materials Science and Technology, South China University of Technology, Guangzhou, China
| | - Yuanjun Guo
- College of Materials Science and Technology, South China University of Technology, Guangzhou, China
| | - Feilong Deng
- Guanghua School and Hospital of Stomatology and Institute of Stomatological Research, Sun Yat‐sen University, Guangzhou, China
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143
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Yamada M, Ueno T, Minamikawa H, Ikeda T, Nakagawa K, Ogawa T. Early-stage osseointegration capability of a submicrofeatured titanium surface created by microroughening and anodic oxidation. Clin Oral Implants Res 2012; 24:991-1001. [DOI: 10.1111/j.1600-0501.2012.02507.x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/13/2012] [Indexed: 11/30/2022]
Affiliation(s)
- Masahiro Yamada
- Laboratory of Bone and Implant Sciences (LBIS); The Weintraub Center for Reconstructive Biotechnology; Division of Advanced Prosthodontics; Biomaterials and Hospital Dentistry; UCLA School of Dentistry; Los Angeles; CA; USA
| | - Takeshi Ueno
- Laboratory of Bone and Implant Sciences (LBIS); The Weintraub Center for Reconstructive Biotechnology; Division of Advanced Prosthodontics; Biomaterials and Hospital Dentistry; UCLA School of Dentistry; Los Angeles; CA; USA
| | - Hajime Minamikawa
- Laboratory of Bone and Implant Sciences (LBIS); The Weintraub Center for Reconstructive Biotechnology; Division of Advanced Prosthodontics; Biomaterials and Hospital Dentistry; UCLA School of Dentistry; Los Angeles; CA; USA
| | - Takayuki Ikeda
- Laboratory of Bone and Implant Sciences (LBIS); The Weintraub Center for Reconstructive Biotechnology; Division of Advanced Prosthodontics; Biomaterials and Hospital Dentistry; UCLA School of Dentistry; Los Angeles; CA; USA
| | - Kaori Nakagawa
- Laboratory of Bone and Implant Sciences (LBIS); The Weintraub Center for Reconstructive Biotechnology; Division of Advanced Prosthodontics; Biomaterials and Hospital Dentistry; UCLA School of Dentistry; Los Angeles; CA; USA
| | - Takahiro Ogawa
- Laboratory of Bone and Implant Sciences (LBIS); The Weintraub Center for Reconstructive Biotechnology; Division of Advanced Prosthodontics; Biomaterials and Hospital Dentistry; UCLA School of Dentistry; Los Angeles; CA; USA
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144
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Mozumder MS, Zhu J, Perinpanayagam H. Titania-polymeric powder coatings with nano-topography support enhanced human mesenchymal cell responses. J Biomed Mater Res A 2012; 100:2695-709. [PMID: 22619111 DOI: 10.1002/jbm.a.34199] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2012] [Accepted: 04/02/2012] [Indexed: 12/13/2022]
Abstract
Titanium implant osseointegration is dependent on the cellular response to surface modifications and coatings. Titania-enriched nanocomposite polymeric resin coatings were prepared through the application of advanced ultrafine powder coating technology. Their surfaces were readily modified to create nano-rough (<100 nm) surface nano-topographies that supported human embryonic palatal mesenchymal cell responses. Energy dispersive x-ray spectroscopy confirmed continuous and homogenous coatings with a similar composition and even distribution of titanium. Scanning electron microscopy (SEM) showed complex micro-topographies, and atomic force microscopy revealed intricate nanofeatures and surface roughness. Cell counts, mitochondrial enzyme activity reduction of yellow 3-(4,5-dimethythiazol-2-yl)-2,5-diphenyl tetrazolium bromide (MTT) to dark purple, SEM, and inverted fluorescence microscopy showed a marked increase in cell attachment, spreading, proliferation, and metabolic activity on the nanostructured surfaces. Reverse Transcription- Polymerase Chain Reaction (RT-PCR) analysis showed that type I collagen and Runx2 expression were induced, and Alizarin red staining showed that mineral deposits were abundant in the cell cultures grown on nanosurfaces. This enhancement in human mesenchymal cell attachment, growth, and osteogenesis were attributed to the nanosized surface topographies, roughness, and moderate wetting characteristics of the coatings. Their dimensional similarity to naturally occurring matrix proteins and crystals, coupled with their increased surface area for protein adsorption, may have facilitated the response. Therefore, this application of ultrafine powder coating technology affords highly biocompatible surfaces that can be readily modified to accentuate the cellular response.
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Komasa S, Taguchi Y, Nishida H, Tanaka M, Kawazoe T. Bioactivity of nanostructure on titanium surface modified by chemical processing at room temperature. J Prosthodont Res 2012; 56:170-7. [PMID: 22613954 DOI: 10.1016/j.jpor.2011.12.002] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2011] [Revised: 11/24/2011] [Accepted: 12/07/2011] [Indexed: 11/17/2022]
Abstract
PURPOSE Recently, there has been considerable interest in finding novel applications and functions for existing dental materials. We found that, at room temperature and atmospheric pressure, titanium oxide spontaneously generates nanostructures very similar to the "nanotubes" created by TiO(2) sputtering. The aim of this study was to evaluate the ability of this surface to affect the cellular osteogenic differentiation response. METHODS Titanium disks without and with a 'nanosheet' deposited on their surface were used as the control and test groups, respectively. Cell culture experiments were performed with SD rat bone marrow cells, which were seeded into microplate wells and cultured in media designed to induce osteogenic differentiation. We measured alkaline phosphatase (ALP) activity, osteocalcin (OCN) production, calcium deposition and Runx2 gene expression to assess the levels of differentiation. RESULTS After 14 and 21 days, cellular ALP activity was significantly higher in the test group than in the control group. After 28 days, cells in the test group also showed significantly more calcium deposition and OCN production than those in the control group. There was significantly different expression of Runx2 mRNA in the test group compared to the control group after 3 days of culture. CONCLUSION In conclusion, these data suggest that titanium implants modified by the application of nanostructures promote osteogenic differentiation, and may improve the biointegration of these implants into the alveolar bone.
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Affiliation(s)
- Satoshi Komasa
- Department of Fixed Prosthodontics and Occlusion, Osaka Dental University, 8-1 Kuzuhahanazonocho, Hirakata, Osaka 573-1121, Japan.
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Birch MA, Johnson-Lynn S, Nouraei S, Wu QB, Ngalim S, Lu WJ, Watchorn C, Yang TY, McCaskie AW, Roy S. Effect of electrochemical structuring of Ti6Al4V on osteoblast behaviour
in vitro. Biomed Mater 2012; 7:035016. [DOI: 10.1088/1748-6041/7/3/035016] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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147
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In vitro and in vivo evaluation of the inflammatory response to nanoscale grooved substrates. NANOMEDICINE-NANOTECHNOLOGY BIOLOGY AND MEDICINE 2012; 8:308-17. [DOI: 10.1016/j.nano.2011.06.013] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/22/2011] [Revised: 05/03/2011] [Accepted: 06/13/2011] [Indexed: 11/18/2022]
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148
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Daw AE, Kazi HA, Colombo JS, Rowe WG, Williams DW, Waddington RJ, Thomas DW, Moseley R. Differential cellular and microbial responses to nano-/micron-scale titanium surface roughness induced by hydrogen peroxide treatment. J Biomater Appl 2012; 28:144-60. [PMID: 22457041 DOI: 10.1177/0885328212441495] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
This study investigated the effects of combined titanium nano-/micron-scale roughness, induced by hydrogen peroxide pre-treatments, on bone marrow stromal cell responses and Porphyromonas gingivalis adherence in vitro. Untreated surfaces exhibited nano-scale features, while hydrogen peroxide treatments promoted increased nano-/micron-scale roughness. Bone marrow stromal cell attachment and proliferation were maintained with 6 h and 24 h treatments, but significantly decreased on 1-week and 4-week-treated surfaces. Bone marrow stromal cells on 6 h-4 week-treated titanium demonstrated enhanced osteogenic differentiation versus untreated surfaces. P. gingivalis adherence was significantly increased on 24 h-4 week surfaces. Results suggest that 6 h but less than 24 h treatments maintain or promote bone marrow stromal cell responses while minimizing microbial adherence, potentially enhancing titanium surface bio-activation for osseointegration.
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Affiliation(s)
- Abdulaziz E Daw
- Tissue Engineering & Reparative Dentistry, Cardiff Institute of Tissue Engineering & Repair-CITER, School of Dentistry, Cardiff University, Cardiff, UK
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Venkatsurya P, Girase B, Misra R, Pesacreta T, Somani M, Karjalainen L. The interplay between osteoblast functions and the degree of nanoscale roughness induced by grain boundary grooving of nanograined materials. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2012. [DOI: 10.1016/j.msec.2011.10.036] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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Yamada M, Ueno T, Tsukimura N, Ikeda T, Nakagawa K, Hori N, Suzuki T, Ogawa T. Bone integration capability of nanopolymorphic crystalline hydroxyapatite coated on titanium implants. Int J Nanomedicine 2012; 7:859-73. [PMID: 22359461 PMCID: PMC3284227 DOI: 10.2147/ijn.s28082] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
The mechanism by which hydroxyapatite (HA)-coated titanium promotes bone–implant integration is largely unknown. Furthermore, refining the fabrication of nano-structured HA to the level applicable to the mass production process for titanium implants is challenging. This study reports successful creation of nanopolymorphic crystalline HA on microroughened titanium surfaces using a combination of flame spray and low-temperature calcination and tests its biological capability to enhance bone–implant integration. Sandblasted microroughened titanium implants and sandblasted + HA-coated titanium implants were subjected to biomechanical and histomorphometric analyses in a rat model. The HA was 55% crystallized and consisted of nanoscale needle-like architectures developed in various diameters, lengths, and orientations, which resulted in a 70% increase in surface area compared to noncoated microroughened surfaces. The HA was free from impurity contaminants, with a calcium/phosphorus ratio of 1.66 being equivalent to that of stoichiometric HA. As compared to microroughened implants, HA-coated implants increased the strength of bone–implant integration consistently at both early and late stages of healing. HA-coated implants showed an increased percentage of bone–implant contact and bone volume within 50 μm proximity of the implant surface, as well as a remarkably reduced percentage of soft tissue intervention between bone and the implant surface. In contrast, bone volume outside the 50 μm border was lower around HA-coated implants. Thus, this study demonstrated that the addition of pure nanopolymorphic crystalline HA to microroughened titanium not only accelerates but also enhances the level of bone–implant integration and identified the specific tissue morphogenesis parameters modulated by HA coating. In particular, the nanocrystalline HA was proven to be drastic in increasing osteoconductivity and inhibiting soft tissue infiltration, but the effect was limited to the immediate microenvironment surrounding the implant.
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Affiliation(s)
- Masahiro Yamada
- Laboratory of Bone and Implant Sciences, The Weintraub Center for Reconstructive Biotechnology, Division of Advanced Prosthodontics, Biomaterials and Hospital Dentistry, UCLA School of Dentistry, Los Angeles, CA 90095-1668, USA
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