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Atif AR, Aramesh M, Carter SS, Tenje M, Mestres G. Universal Biomaterial-on-Chip: a versatile platform for evaluating cellular responses on diverse biomaterial substrates. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2024; 35:2. [PMID: 38206428 PMCID: PMC10784356 DOI: 10.1007/s10856-023-06771-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/19/2023] [Accepted: 12/11/2023] [Indexed: 01/12/2024]
Abstract
Microfluidics has emerged as a promising approach for assessing cellular behavior in vitro, providing more physiologically relevant cell culture environments with dynamic flow and shear stresses. This study introduces the Universal Biomaterial-on-Chip (UBoC) device, which enables the evaluation of cell response on diverse biomaterial substrates in a 3D-printed microfluidic device. The UBoC platform offers mechanical stimulation of the cells and monitoring of their response on diverse biomaterials, enabling qualitative and quantitative in vitro analysis both on- and off-chip. Cell adhesion and proliferation were assessed to evaluate the biocompatibility of materials with different physical properties, while mechanical stimulation was performed to investigate shear-dependent calcium signaling in pre-osteoblasts. Moreover, the applicability of the UBoC platform in creating more complex in vitro models by culturing multiple cell types was demonstrated, establishing a dynamic multicellular environment to investigate cellular interfaces and their significance in biological processes. Overall, the UBoC presents an adaptable tool for in vitro evaluation of cellular behavior, offering opportunities for studying various biomaterials and cell interactions in microfluidic environments.
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Affiliation(s)
- Abdul Raouf Atif
- Division of Biomedical Engineering, Department of Materials Science and Engineering, Science for Life Laboratory, Uppsala University, 751 22, Uppsala, Sweden
| | - Morteza Aramesh
- Division of Biomedical Engineering, Department of Materials Science and Engineering, Science for Life Laboratory, Uppsala University, 751 22, Uppsala, Sweden.
| | - Sarah-Sophia Carter
- Division of Biomedical Engineering, Department of Materials Science and Engineering, Science for Life Laboratory, Uppsala University, 751 22, Uppsala, Sweden
| | - Maria Tenje
- Division of Biomedical Engineering, Department of Materials Science and Engineering, Science for Life Laboratory, Uppsala University, 751 22, Uppsala, Sweden
| | - Gemma Mestres
- Division of Biomedical Engineering, Department of Materials Science and Engineering, Science for Life Laboratory, Uppsala University, 751 22, Uppsala, Sweden
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The Localized Ionic Microenvironment in Bone Modelling/Remodelling: A Potential Guide for the Design of Biomaterials for Bone Tissue Engineering. J Funct Biomater 2023; 14:jfb14020056. [PMID: 36826855 PMCID: PMC9959312 DOI: 10.3390/jfb14020056] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2022] [Revised: 01/11/2023] [Accepted: 01/14/2023] [Indexed: 01/20/2023] Open
Abstract
Bone is capable of adjusting size, shape, and quality to maintain its strength, toughness, and stiffness and to meet different needs of the body through continuous remodeling. The balance of bone homeostasis is orchestrated by interactions among different types of cells (mainly osteoblasts and osteoclasts), extracellular matrix, the surrounding biological milieus, and waste products from cell metabolisms. Inorganic ions liberated into the localized microenvironment during bone matrix degradation not only form apatite crystals as components or enter blood circulation to meet other bodily needs but also alter cellular activities as molecular modulators. The osteoinductive potential of inorganic motifs of bone has been gradually understood since the last century. Still, few have considered the naturally generated ionic microenvironment's biological roles in bone remodeling. It is believed that a better understanding of the naturally balanced ionic microenvironment during bone remodeling can facilitate future biomaterial design for bone tissue engineering in terms of the modulatory roles of the ionic environment in the regenerative process.
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Carter SSD, Atif AR, Diez-Escudero A, Grape M, Ginebra MP, Tenje M, Mestres G. A microfluidic-based approach to investigate the inflammatory response of macrophages to pristine and drug-loaded nanostructured hydroxyapatite. Mater Today Bio 2022; 16:100351. [PMID: 35865408 PMCID: PMC9294551 DOI: 10.1016/j.mtbio.2022.100351] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2022] [Revised: 06/30/2022] [Accepted: 07/02/2022] [Indexed: 11/28/2022] Open
Abstract
The in vitro biological characterization of biomaterials is largely based on static cell cultures. However, for highly reactive biomaterials such as calcium-deficient hydroxyapatite (CDHA), this static environment has limitations. Drastic alterations in the ionic composition of the cell culture medium can negatively affect cell behavior, which can lead to misleading results or data that is difficult to interpret. This challenge could be addressed by a microfluidics-based approach (i.e. on-chip), which offers the opportunity to provide a continuous flow of cell culture medium and a potentially more physiologically relevant microenvironment. The aim of this work was to explore microfluidic technology for its potential to characterize CDHA, particularly in the context of inflammation. Two different CDHA substrates (chemically identical, but varying in microstructure) were integrated on-chip and subsequently evaluated. We demonstrated that the on-chip environment can avoid drastic ionic alterations and increase protein sorption, which was reflected in cell studies with RAW 264.7 macrophages. The cells grown on-chip showed a high cell viability and enhanced proliferation compared to cells maintained under static conditions. Whereas no clear differences in the secretion of tumor necrosis factor alpha (TNF-α) were found, variations in cell morphology suggested a more anti-inflammatory environment on-chip. In the second part of this study, the CDHA substrates were loaded with the drug Trolox. We showed that it is possible to characterize drug release on-chip and moreover demonstrated that Trolox affects the TNF-α secretion and morphology of RAW 264.7 cells. Overall, these results highlight the potential of microfluidics to evaluate (bioactive) biomaterials, both in pristine form and when drug-loaded. This is of particular interest for the latter case, as it allows the biological characterization and assessment of drug release to take place under the same dynamic in vitro environment.
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Affiliation(s)
- Sarah-Sophia D Carter
- Division of Biomedical Engineering, Department of Materials Science and Engineering, Science for Life Laboratory, Uppsala University, 751 22, Uppsala, Sweden
| | - Abdul-Raouf Atif
- Division of Biomedical Engineering, Department of Materials Science and Engineering, Science for Life Laboratory, Uppsala University, 751 22, Uppsala, Sweden
| | - Anna Diez-Escudero
- Ortholab, Department of Surgical Sciences-Orthopaedics, Uppsala University, Uppsala, 751 85, Sweden
| | - Maja Grape
- Division of Biomedical Engineering, Department of Materials Science and Engineering, Science for Life Laboratory, Uppsala University, 751 22, Uppsala, Sweden
| | - Maria-Pau Ginebra
- Biomaterials, Biomechanics and Tissue Engineering Group, Departament de Ciència i Enginyeria de Materials, Universitat Politècnica de Catalunya (UPC), 08930, Barcelona, Spain.,Barcelona Research Center in Multiscale Science and Engineering, Universitat Politècnica de Catalunya, 08930, Barcelona, Spain.,Institute for Bioengineering of Catalonia (IBEC), Barcelona Institute of Science and Technology (BIST), Baldiri Reixac 10-12, 08028, Barcelona, Spain
| | - Maria Tenje
- Division of Biomedical Engineering, Department of Materials Science and Engineering, Science for Life Laboratory, Uppsala University, 751 22, Uppsala, Sweden
| | - Gemma Mestres
- Division of Biomedical Engineering, Department of Materials Science and Engineering, Science for Life Laboratory, Uppsala University, 751 22, Uppsala, Sweden
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Bonany M, Pérez-Berná AJ, Dučić T, Pereiro E, Martin-Gómez H, Mas-Moruno C, van Rijt S, Zhao Z, Espanol M, Ginebra MP. Hydroxyapatite nanoparticles-cell interaction: New approaches to disclose the fate of membrane-bound and internalised nanoparticles. BIOMATERIALS ADVANCES 2022; 142:213148. [PMID: 36274359 DOI: 10.1016/j.bioadv.2022.213148] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/21/2022] [Revised: 09/03/2022] [Accepted: 10/06/2022] [Indexed: 06/16/2023]
Abstract
Hydroxyapatite nanoparticles are popular tools in bone regeneration, but they have also been used for gene delivery and as anticancer drugs. Understanding their mechanism of action, particularly for the latter application, is crucial to predict their toxicity. To this end, we aimed to elucidate the importance of nanoparticle membrane interactions in the cytotoxicity of MG-63 cells using two different types of nanoparticles. In addition, conventional techniques for studying nanoparticle internalisation were evaluated and compared with newer and less exploited approaches. Hydroxyapatite and magnesium-doped hydroxyapatite nanoparticles were used as suspensions or compacted as specular discs. Comparison between cells seeded on the discs and those supplemented with the nanoparticles allowed direct interaction of the cell membrane with the material to be ruled out as the main mechanism of toxicity. In addition, standard techniques such as flow cytometry were inconclusive when used to assess nanoparticles toxicity. Interestingly, the use of intracellular calcium fluorescent probes revealed the presence of a high number of calcium-rich vesicles after nanoparticle supplementation in cell culture. These structures could not be detected by transmission electron microscopy due to their liquid content. However, by using cryo-soft X-ray imaging, which was used to visualise the cellular ultrastructure without further treatment other than vitrification and to quantify the linear absorption coefficient of each organelle, it was possible to identify them as multivesicular bodies, potentially acting as calcium stores. In the study, an advanced state of degradation of the hydroxyapatite and magnesium-doped hydroxyapatite nanoparticles within MG-63 cells was observed. Overall, we demonstrate that the combination of fluorescent calcium probes together with cryo-SXT is an excellent approach to investigate intracellular calcium, especially when found in its soluble form.
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Affiliation(s)
- Mar Bonany
- Biomaterials, Biomechanics and Tissue Engineering Group, Department of Materials Science and Engineering, Universitat Politècnica de Catalunya (UPC), 08019 Barcelona, Spain; Barcelona Research Centre in Multiscale Science and Engineering, UPC, 08019 Barcelona, Spain; Biomedical Engineering Research Center (CREB), UPC, 08028 Barcelona, Spain
| | | | - Tanja Dučić
- MISTRAL Beamline Experiments Division, ALBA Synchrotron Light Source, 08290 Barcelona, Spain
| | - Eva Pereiro
- MISTRAL Beamline Experiments Division, ALBA Synchrotron Light Source, 08290 Barcelona, Spain
| | - Helena Martin-Gómez
- Biomaterials, Biomechanics and Tissue Engineering Group, Department of Materials Science and Engineering, Universitat Politècnica de Catalunya (UPC), 08019 Barcelona, Spain; Barcelona Research Centre in Multiscale Science and Engineering, UPC, 08019 Barcelona, Spain
| | - Carlos Mas-Moruno
- Biomaterials, Biomechanics and Tissue Engineering Group, Department of Materials Science and Engineering, Universitat Politècnica de Catalunya (UPC), 08019 Barcelona, Spain; Barcelona Research Centre in Multiscale Science and Engineering, UPC, 08019 Barcelona, Spain; Biomedical Engineering Research Center (CREB), UPC, 08028 Barcelona, Spain
| | - Sabine van Rijt
- Department of Instructive Biomaterials Engineering, MERLN Institute for Technology-Inspired Regenerative Medicine, Maastricht University, 6200, MD, Maastricht, the Netherlands
| | - Zhitong Zhao
- Biomaterials, Biomechanics and Tissue Engineering Group, Department of Materials Science and Engineering, Universitat Politècnica de Catalunya (UPC), 08019 Barcelona, Spain; School of Materials Science and Engineering, Nanyang Technological University, Singapore 639798, Singapore
| | - Montserrat Espanol
- Biomaterials, Biomechanics and Tissue Engineering Group, Department of Materials Science and Engineering, Universitat Politècnica de Catalunya (UPC), 08019 Barcelona, Spain; Barcelona Research Centre in Multiscale Science and Engineering, UPC, 08019 Barcelona, Spain; Biomedical Engineering Research Center (CREB), UPC, 08028 Barcelona, Spain.
| | - Maria-Pau Ginebra
- Biomaterials, Biomechanics and Tissue Engineering Group, Department of Materials Science and Engineering, Universitat Politècnica de Catalunya (UPC), 08019 Barcelona, Spain; Barcelona Research Centre in Multiscale Science and Engineering, UPC, 08019 Barcelona, Spain; Biomedical Engineering Research Center (CREB), UPC, 08028 Barcelona, Spain; Institute for Bioengineering of Catalonia (IBEC), Barcelona Institute of Science and Technology, 08028 Barcelona, Spain
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5
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Iglesias-Fernandez M, Buxadera-Palomero J, Sadowska JM, Espanol M, Ginebra MP. Implementation of bactericidal topographies on biomimetic calcium phosphates and the potential effect of its reactivity. BIOMATERIALS ADVANCES 2022; 136:212797. [PMID: 35929296 DOI: 10.1016/j.bioadv.2022.212797] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/15/2021] [Revised: 04/01/2022] [Accepted: 04/07/2022] [Indexed: 06/15/2023]
Abstract
Since the discovery that nanostructured surfaces were able to kill bacteria, many works have been published focusing on the design of nanopatterned surfaces with antimicrobial properties. Synthetic bone grafts, based on calcium phosphate (CaP) formulations, can greatly benefit from this discovery if adequate nanotopographies can be developed. However, CaP are reactive materials and experience ionic exchanges when placed into aqueous solutions which may in turn affect cell behaviour and complicate the interpretation of the bactericidal results. The present study explores the bactericidal potential of two nanopillared CaP prepared by hydrolysis of two different sizes of α-tricalcium phosphate (α-TCP) powders under biomimetic or hydrothermal conditions. A more lethal bactericidal response toward Pseudomonas aeruginosa (~75% killing efficiency of adhered bacteria) was obtained from the hydrothermally treated CaP which consisted in a more irregular topography in terms of pillar size (radius: 20-60 nm), interpillar distances (100-1500 nm) and pillar distribution (pillar groups forming bouquets) than the biomimetically treated one (radius: 20-40 nm and interpillar distances: 50-200 nm with a homogeneous pillar distribution). The material reactivity was greatly influenced by the type of medium (nutrient-rich versus nutrient-free) and the presence or not of bacteria. A lower reactivity and superior bacterial attachment were observed in the nutrient-free medium while a lower attachment was observed for the nutrient rich medium which was explained by a superior reactivity of the material paired with the lower tendency of planktonic bacteria to adhere on surfaces in the presence of nutrients. Importantly, the ionic exchanges produced by the presence of materials were not toxic to planktonic cells. Thus, we can conclude that topography was the main contributor to mortality in the bacterial adhesion tests.
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Affiliation(s)
- Marc Iglesias-Fernandez
- Biomaterials, Biomechanics and Tissue Engineering Group, Department of Materials Science and Engineering, Universitat Politècnica de Catalunya (UPC), Av. Eduard Maristany 16, 08019 Barcelona, Spain; Barcelona Research Center in Multiscale Science and Engineering, Universitat Politècnica de Catalunya (UPC), Av. Eduard Maristany 16, 08019 Barcelona, Spain
| | - Judit Buxadera-Palomero
- Biomaterials, Biomechanics and Tissue Engineering Group, Department of Materials Science and Engineering, Universitat Politècnica de Catalunya (UPC), Av. Eduard Maristany 16, 08019 Barcelona, Spain; Barcelona Research Center in Multiscale Science and Engineering, Universitat Politècnica de Catalunya (UPC), Av. Eduard Maristany 16, 08019 Barcelona, Spain
| | - Joanna-Maria Sadowska
- Biomaterials, Biomechanics and Tissue Engineering Group, Department of Materials Science and Engineering, Universitat Politècnica de Catalunya (UPC), Av. Eduard Maristany 16, 08019 Barcelona, Spain; Barcelona Research Center in Multiscale Science and Engineering, Universitat Politècnica de Catalunya (UPC), Av. Eduard Maristany 16, 08019 Barcelona, Spain
| | - Montserrat Espanol
- Biomaterials, Biomechanics and Tissue Engineering Group, Department of Materials Science and Engineering, Universitat Politècnica de Catalunya (UPC), Av. Eduard Maristany 16, 08019 Barcelona, Spain; Barcelona Research Center in Multiscale Science and Engineering, Universitat Politècnica de Catalunya (UPC), Av. Eduard Maristany 16, 08019 Barcelona, Spain.
| | - Maria-Pau Ginebra
- Biomaterials, Biomechanics and Tissue Engineering Group, Department of Materials Science and Engineering, Universitat Politècnica de Catalunya (UPC), Av. Eduard Maristany 16, 08019 Barcelona, Spain; Barcelona Research Center in Multiscale Science and Engineering, Universitat Politècnica de Catalunya (UPC), Av. Eduard Maristany 16, 08019 Barcelona, Spain; Institute for Bioengineering of Catalonia (IBEC), The Barcelona Institute of Science and Technology, Baldiri Reixac 10-12, 08028 Barcelona, Spain
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6
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Stimulation of Metabolic Activity and Cell Differentiation in Osteoblastic and Human Mesenchymal Stem Cells by a Nanohydroxyapatite Paste Bone Graft Substitute. MATERIALS 2022; 15:ma15041570. [PMID: 35208112 PMCID: PMC8877199 DOI: 10.3390/ma15041570] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/23/2021] [Revised: 02/07/2022] [Accepted: 02/11/2022] [Indexed: 02/01/2023]
Abstract
Advances in nanotechnology have been exploited to develop new biomaterials including nanocrystalline hydroxyapatite (nHA) with physical properties close to those of natural bone mineral. While clinical data are encouraging, relatively little is understood regarding bone cells’ interactions with synthetic graft substitutes based on this technology. The aim of this research was therefore to investigate the in vitro response of both osteoblast cell lines and primary osteoblasts to an nHA paste. Cellular metabolic activity was assessed using the cell viability reagent PrestoBlue and quantitative, real-time PCR was used to determine gene expression related to osteogenic differentiation. A potential role of calcium-sensing receptor (CaSR) in the response of osteoblastic cells to nHA was also investigated. Indirect contact of the nHA paste with human osteoblastic cells (Saos-2, MG63, primary osteoblasts) and human bone marrow-derived mesenchymal stem cells enhanced the cell metabolic activity. The nHA paste also stimulated gene expression of runt-related transcription factor 2, collagen 1, alkaline phosphatase, and osteocalcin, thereby indicating an osteogenic response. CaSR was not involved in nHA paste-induced increases in cellular metabolic activity. This investigation demonstrated that the nHA paste has osteogenic properties that contribute to clinical efficacy when employed as an injectable bone graft substitute.
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7
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Yuan Z, Bi J, Wang W, Sun X, Wang L, Mao J, Yang F. A novel synthesis method and properties of calcium-deficient hydroxyapatite/α-TCP biphasic calcium phosphate. J Biomater Appl 2022; 36:1712-1719. [PMID: 35108128 DOI: 10.1177/08853282211068597] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Biphasic calcium phosphate (BCP) is an important research field based on calcium phosphate biomaterials. In this paper, a new synthesis method of CDHA/α-TCP BCP was studied. By controlling the addition amount of citric acid, the relative contents of CDHA and α-TCP in the BCP were controlled. BCP bone cement was prepared with different proportions of BCP as raw materials. The BCP bone cement was characterized by XRD and SEM, and evaluated by measuring setting time, compressive strength, SBF immersion, and colorimetric CCK-8 assay. The results showed that the increase of CDHA content can lead to the reduction of the setting time of bone cement and delay the degradation rate of BCP bone cement.
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Affiliation(s)
- Zhen Yuan
- Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials, 12589Ministry of Education, School of Materials Science and Engineering, Shandong University, Jinan 250061, China
| | - Jianqiang Bi
- Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials, 12589Ministry of Education, School of Materials Science and Engineering, Shandong University, Jinan 250061, China
| | - Weilli Wang
- Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials, 12589Ministry of Education, School of Materials Science and Engineering, Shandong University, Jinan 250061, China
| | - Xiaoning Sun
- Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials, 12589Ministry of Education, School of Materials Science and Engineering, Shandong University, Jinan 250061, China
| | - Lu Wang
- Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials, 12589Ministry of Education, School of Materials Science and Engineering, Shandong University, Jinan 250061, China
| | - Junjie Mao
- Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials, 12589Ministry of Education, School of Materials Science and Engineering, Shandong University, Jinan 250061, China
| | - Fushuai Yang
- Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials, 12589Ministry of Education, School of Materials Science and Engineering, Shandong University, Jinan 250061, China
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8
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Konka J, Espanol M, Bosch BM, de Oliveira E, Ginebra MP. Maturation of biomimetic hydroxyapatite in physiological fluids: a physicochemical and proteomic study. Mater Today Bio 2021; 12:100137. [PMID: 34632362 PMCID: PMC8487082 DOI: 10.1016/j.mtbio.2021.100137] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2021] [Revised: 08/20/2021] [Accepted: 09/04/2021] [Indexed: 11/26/2022] Open
Abstract
Biomimetic calcium-deficient hydroxyapatite (CDHA) as a bioactive material exhibits exceptional intrinsic osteoinductive and osteogenic properties because of its nanostructure and composition, which promote a favorable microenvironment. Its high reactivity has been hypothesized to play a relevant role in the in vivo performance, mediated by the interaction with the biological fluids, which is amplified by its high specific surface area. Paradoxically, this high reactivity is also behind the in vitro cytotoxicity of this material, especially pronounced in static conditions. The present work explores the structural and physicochemical changes that CDHA undergoes in contact with physiological fluids and to investigate its interaction with proteins. Calcium-deficient hydroxyapatite discs with different micro/nanostructures, coarse (C) and fine (F), were exposed to cell-free complete culture medium over extended periods of time: 1, 7, 14, 21, 28, and 50 days. Precipitate formation was not observed in any of the materials in contact with the physiological fluid, which would indicate that the ionic exchanges were linked to incorporation into the crystal structure of CDHA or in the hydrated layer. In fact, CDHA experienced a maturation process, with a progressive increase in crystallinity and the Ca/P ratio, accompanied by an uptake of Mg and a B-type carbonation process, with a gradual propagation into the core of the samples. However, the reactivity of biomimetic hydroxyapatite was highly dependent on the specific surface area and was amplified in nanosized needle-like crystal structures (F), whereas in coarse specimens the ionic exchanges were restricted to the surface, with low penetration in the material bulk. In addition to showing a higher protein adsorption on F substrates, the proteomics study revealed the existence of protein selectivity toward F or C microstructures, as well as the capability of CDHA, and more remarkably of F-CDHA, to concentrate specific proteins from the culture medium. Finally, a substantial improvement in the material's ability to support cell proliferation was observed after the CDHA maturation process.
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Affiliation(s)
- J Konka
- Biomaterials, Biomechanics and Tissue Engineering Group, Department of Materials Science and Engineering, Universitat Politècnica de Catalunya (UPC), Av. Eduard Maristany 16, 08019, Barcelona, Spain.,Barcelona Research Center in Multiscale Science and Engineering, Universitat Politècnica de Catalunya (UPC), Av. Eduard Maristany 16, 08019, Barcelona, Spain
| | - M Espanol
- Biomaterials, Biomechanics and Tissue Engineering Group, Department of Materials Science and Engineering, Universitat Politècnica de Catalunya (UPC), Av. Eduard Maristany 16, 08019, Barcelona, Spain.,Barcelona Research Center in Multiscale Science and Engineering, Universitat Politècnica de Catalunya (UPC), Av. Eduard Maristany 16, 08019, Barcelona, Spain
| | - B M Bosch
- Bioengineering Institute of Technology (BIT), Universitat Internacional de Catalunya (UIC), Josep Trueta s/n, 08195, Barcelona, Spain
| | - E de Oliveira
- Plataforma de Proteòmica, Parc Científic de Barcelona, PCB, Barcelona, Spain
| | - M-P Ginebra
- Biomaterials, Biomechanics and Tissue Engineering Group, Department of Materials Science and Engineering, Universitat Politècnica de Catalunya (UPC), Av. Eduard Maristany 16, 08019, Barcelona, Spain.,Barcelona Research Center in Multiscale Science and Engineering, Universitat Politècnica de Catalunya (UPC), Av. Eduard Maristany 16, 08019, Barcelona, Spain.,Institute for Bioengineering of Catalonia (IBEC), The Barcelona Institute of Science and Technology, Baldiri Reixac 10-12, 08028, Barcelona, Spain
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9
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Abstract
Regenerative engineering has pioneered several novel biomaterials to treat critical-sized bone injuries. However, despite significant improvement in synthetic materials research, some limitations still exist. The constraints correlated with the current grafting methods signify a treatment paradigm shift to osteoinductive regenerative engineering approaches. Because of their intrinsic potential, inductive biomaterials may represent alternative approaches to treating critical bone injuries. Osteoinductive scaffolds stimulate stem cell differentiation into the osteoblastic lineage, enhancing bone regeneration. Inductive biomaterials comprise polymers, calcium phosphate ceramics, metals, and graphene family materials. This review will assess the cellular behavior toward properties of inductive materials.
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Affiliation(s)
- F S Hosseini
- Connecticut Convergence Institute for Translation in Regenerative Engineering, University of Connecticut Health, Farmington, CT, USA
- Raymond and Beverly Sackler Center for Biological, Physical and Engineering Sciences, University of Connecticut Health, Farmington, CT, USA
- Department of Orthopedic Surgery, University of Connecticut Health, Farmington, CT, USA
- Department of Skeletal Biology and Regeneration, UConn Health, Farmington, CT, USA
| | - L S Nair
- Connecticut Convergence Institute for Translation in Regenerative Engineering, University of Connecticut Health, Farmington, CT, USA
- Raymond and Beverly Sackler Center for Biological, Physical and Engineering Sciences, University of Connecticut Health, Farmington, CT, USA
- Department of Orthopedic Surgery, University of Connecticut Health, Farmington, CT, USA
- Department of Biomedical Engineering, University of Connecticut, Storrs, CT, USA
- Department of Materials Science and Engineering, University of Connecticut, Storrs, CT, USA
| | - C T Laurencin
- Connecticut Convergence Institute for Translation in Regenerative Engineering, University of Connecticut Health, Farmington, CT, USA
- Raymond and Beverly Sackler Center for Biological, Physical and Engineering Sciences, University of Connecticut Health, Farmington, CT, USA
- Department of Orthopedic Surgery, University of Connecticut Health, Farmington, CT, USA
- Department of Biomedical Engineering, University of Connecticut, Storrs, CT, USA
- Department of Materials Science and Engineering, University of Connecticut, Storrs, CT, USA
- Department of Chemical and Biomolecular Engineering, University of Connecticut, Storrs, CT, USA
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10
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Atif AR, Pujari-Palmer M, Tenje M, Mestres G. A microfluidics-based method for culturing osteoblasts on biomimetic hydroxyapatite. Acta Biomater 2021; 127:327-337. [PMID: 33785452 DOI: 10.1016/j.actbio.2021.03.046] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2020] [Revised: 03/02/2021] [Accepted: 03/22/2021] [Indexed: 12/11/2022]
Abstract
The reliability of conventional cell culture studies to evaluate biomaterials is often questioned, as in vitro outcomes may contradict results obtained through in vivo assays. Microfluidics technology has the potential to reproduce complex physiological conditions by allowing for fine control of microscale features such as cell confinement and flow rate. Having a continuous flow during cell culture is especially advantageous for bioactive biomaterials such as calcium-deficient hydroxyapatite (HA), which may otherwise alter medium composition and jeopardize cell viability, potentially producing false negative results in vitro. In this work, HA was integrated into a microfluidics-based platform (HA-on-chip) and the effect of varied flow rates (2, 8 and 14 µl/min, corresponding to 0.002, 0.008 and 0.014 dyn/cm2, respectively) was evaluated. A HA sample placed in a well plate (HA-static) was included as a control. While substantial calcium depletion and phosphate release occurred in static conditions, the concentration of ions in HA-on-chip samples remained similar to those of fresh medium, particularly at higher flow rates. Pre-osteoblast-like cells (MC3T3-E1) exhibited a significantly higher degree of proliferation on HA-on-chip (8 μl/min flow rate) as compared to HA-static. However, cell differentiation, analysed by alkaline phosphatase (ALP) activity, showed low values in both conditions. This study indicates that cells respond differently when cultured on HA under flow compared to static conditions, which indicates the need for more physiologically relevant methods to increase the predictive value of in vitro studies used to evaluate biomaterials. STATEMENT OF SIGNIFICANCE: There is a lack of correlation between the results obtained when testing some biomaterials under cell culture as opposed to animal models. To address this issue, a cell culture method with slightly enhanced physiological relevance was developed by incorporating a biomaterial, known to regenerate bone, inside of a microfluidic platform that enabled a continuous supply of cell culture medium. Since the utilized biomaterial interacts with surrounding ions, the perfusion of medium allowed for shielding of these changes similarly as would happen in the body. The experimental outcomes observed in the dynamic platform were different than those obtained with standard static cell culture systems, proving the key role of the platform in the assessment of biomaterials.
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Affiliation(s)
- Abdul Raouf Atif
- Division of Microsystems Technology, Department of Materials Science and Engineering, Science for Life Laboratory, Uppsala University, 751 22 Uppsala, Sweden
| | - Michael Pujari-Palmer
- Division of Applied Materials Science, Department of Materials Science and Engineering, Uppsala University, 751 22 Uppsala, Sweden
| | - Maria Tenje
- Division of Microsystems Technology, Department of Materials Science and Engineering, Science for Life Laboratory, Uppsala University, 751 22 Uppsala, Sweden
| | - Gemma Mestres
- Division of Microsystems Technology, Department of Materials Science and Engineering, Science for Life Laboratory, Uppsala University, 751 22 Uppsala, Sweden.
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11
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Zhang Y, Wu D, Zhao X, Pakvasa M, Tucker AB, Luo H, Qin KH, Hu DA, Wang EJ, Li AJ, Zhang M, Mao Y, Sabharwal M, He F, Niu C, Wang H, Huang L, Shi D, Liu Q, Ni N, Fu K, Chen C, Wagstaff W, Reid RR, Athiviraham A, Ho S, Lee MJ, Hynes K, Strelzow J, He TC, El Dafrawy M. Stem Cell-Friendly Scaffold Biomaterials: Applications for Bone Tissue Engineering and Regenerative Medicine. Front Bioeng Biotechnol 2020; 8:598607. [PMID: 33381499 PMCID: PMC7767872 DOI: 10.3389/fbioe.2020.598607] [Citation(s) in RCA: 49] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2020] [Accepted: 11/27/2020] [Indexed: 02/06/2023] Open
Abstract
Bone is a dynamic organ with high regenerative potential and provides essential biological functions in the body, such as providing body mobility and protection of internal organs, regulating hematopoietic cell homeostasis, and serving as important mineral reservoir. Bone defects, which can be caused by trauma, cancer and bone disorders, pose formidable public health burdens. Even though autologous bone grafts, allografts, or xenografts have been used clinically, repairing large bone defects remains as a significant clinical challenge. Bone tissue engineering (BTE) emerged as a promising solution to overcome the limitations of autografts and allografts. Ideal bone tissue engineering is to induce bone regeneration through the synergistic integration of biomaterial scaffolds, bone progenitor cells, and bone-forming factors. Successful stem cell-based BTE requires a combination of abundant mesenchymal progenitors with osteogenic potential, suitable biofactors to drive osteogenic differentiation, and cell-friendly scaffold biomaterials. Thus, the crux of BTE lies within the use of cell-friendly biomaterials as scaffolds to overcome extensive bone defects. In this review, we focus on the biocompatibility and cell-friendly features of commonly used scaffold materials, including inorganic compound-based ceramics, natural polymers, synthetic polymers, decellularized extracellular matrix, and in many cases, composite scaffolds using the above existing biomaterials. It is conceivable that combinations of bioactive materials, progenitor cells, growth factors, functionalization techniques, and biomimetic scaffold designs, along with 3D bioprinting technology, will unleash a new era of complex BTE scaffolds tailored to patient-specific applications.
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Affiliation(s)
- Yongtao Zhang
- Department of Orthopaedic Surgery, The Affiliated Hospital of Qingdao University, Qingdao, China
- Molecular Oncology Laboratory, Department of Orthopaedic Surgery and Rehabilitation Medicine, The University of Chicago Medical Center, Chicago, IL, United States
| | - Di Wu
- Molecular Oncology Laboratory, Department of Orthopaedic Surgery and Rehabilitation Medicine, The University of Chicago Medical Center, Chicago, IL, United States
- Ministry of Education Key Laboratory of Diagnostic Medicine, The School of Laboratory Medicine and the Affiliated Hospitals, Chongqing Medical University, Chongqing, China
| | - Xia Zhao
- Department of Orthopaedic Surgery, The Affiliated Hospital of Qingdao University, Qingdao, China
- Molecular Oncology Laboratory, Department of Orthopaedic Surgery and Rehabilitation Medicine, The University of Chicago Medical Center, Chicago, IL, United States
| | - Mikhail Pakvasa
- Molecular Oncology Laboratory, Department of Orthopaedic Surgery and Rehabilitation Medicine, The University of Chicago Medical Center, Chicago, IL, United States
| | - Andrew Blake Tucker
- Molecular Oncology Laboratory, Department of Orthopaedic Surgery and Rehabilitation Medicine, The University of Chicago Medical Center, Chicago, IL, United States
| | - Huaxiu Luo
- Molecular Oncology Laboratory, Department of Orthopaedic Surgery and Rehabilitation Medicine, The University of Chicago Medical Center, Chicago, IL, United States
- Department of Burn and Plastic Surgery, West China Hospital of Sichuan University, Chengdu, China
| | - Kevin H. Qin
- Molecular Oncology Laboratory, Department of Orthopaedic Surgery and Rehabilitation Medicine, The University of Chicago Medical Center, Chicago, IL, United States
| | - Daniel A. Hu
- Molecular Oncology Laboratory, Department of Orthopaedic Surgery and Rehabilitation Medicine, The University of Chicago Medical Center, Chicago, IL, United States
| | - Eric J. Wang
- Molecular Oncology Laboratory, Department of Orthopaedic Surgery and Rehabilitation Medicine, The University of Chicago Medical Center, Chicago, IL, United States
| | - Alexander J. Li
- Molecular Oncology Laboratory, Department of Orthopaedic Surgery and Rehabilitation Medicine, The University of Chicago Medical Center, Chicago, IL, United States
| | - Meng Zhang
- Molecular Oncology Laboratory, Department of Orthopaedic Surgery and Rehabilitation Medicine, The University of Chicago Medical Center, Chicago, IL, United States
- Department of Orthopaedic Surgery, The First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Yukun Mao
- Molecular Oncology Laboratory, Department of Orthopaedic Surgery and Rehabilitation Medicine, The University of Chicago Medical Center, Chicago, IL, United States
- Departments of Orthopaedic Surgery and Neurosurgery, The Affiliated Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Maya Sabharwal
- Molecular Oncology Laboratory, Department of Orthopaedic Surgery and Rehabilitation Medicine, The University of Chicago Medical Center, Chicago, IL, United States
| | - Fang He
- Department of Orthopaedic Surgery, The Affiliated Hospital of Qingdao University, Qingdao, China
- Molecular Oncology Laboratory, Department of Orthopaedic Surgery and Rehabilitation Medicine, The University of Chicago Medical Center, Chicago, IL, United States
| | - Changchun Niu
- Molecular Oncology Laboratory, Department of Orthopaedic Surgery and Rehabilitation Medicine, The University of Chicago Medical Center, Chicago, IL, United States
- Department of Laboratory Diagnostic Medicine, The Affiliated Hospital of the University of Chinese Academy of Sciences, Chongqing General Hospital, Chongqing, China
| | - Hao Wang
- Molecular Oncology Laboratory, Department of Orthopaedic Surgery and Rehabilitation Medicine, The University of Chicago Medical Center, Chicago, IL, United States
- Ministry of Education Key Laboratory of Diagnostic Medicine, The School of Laboratory Medicine and the Affiliated Hospitals, Chongqing Medical University, Chongqing, China
| | - Linjuan Huang
- Molecular Oncology Laboratory, Department of Orthopaedic Surgery and Rehabilitation Medicine, The University of Chicago Medical Center, Chicago, IL, United States
- Ministry of Education Key Laboratory of Diagnostic Medicine, The School of Laboratory Medicine and the Affiliated Hospitals, Chongqing Medical University, Chongqing, China
| | - Deyao Shi
- Molecular Oncology Laboratory, Department of Orthopaedic Surgery and Rehabilitation Medicine, The University of Chicago Medical Center, Chicago, IL, United States
- Department of Orthopaedic Surgery, Union Hospital of Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Qing Liu
- Molecular Oncology Laboratory, Department of Orthopaedic Surgery and Rehabilitation Medicine, The University of Chicago Medical Center, Chicago, IL, United States
- Department of Spine Surgery, Second Xiangya Hospital, Central South University, Changsha, China
| | - Na Ni
- Molecular Oncology Laboratory, Department of Orthopaedic Surgery and Rehabilitation Medicine, The University of Chicago Medical Center, Chicago, IL, United States
- Ministry of Education Key Laboratory of Diagnostic Medicine, The School of Laboratory Medicine and the Affiliated Hospitals, Chongqing Medical University, Chongqing, China
| | - Kai Fu
- Molecular Oncology Laboratory, Department of Orthopaedic Surgery and Rehabilitation Medicine, The University of Chicago Medical Center, Chicago, IL, United States
- Departments of Orthopaedic Surgery and Neurosurgery, The Affiliated Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Connie Chen
- Molecular Oncology Laboratory, Department of Orthopaedic Surgery and Rehabilitation Medicine, The University of Chicago Medical Center, Chicago, IL, United States
| | - William Wagstaff
- Molecular Oncology Laboratory, Department of Orthopaedic Surgery and Rehabilitation Medicine, The University of Chicago Medical Center, Chicago, IL, United States
| | - Russell R. Reid
- Molecular Oncology Laboratory, Department of Orthopaedic Surgery and Rehabilitation Medicine, The University of Chicago Medical Center, Chicago, IL, United States
- Department of Surgery Section of Plastic and Reconstructive Surgery, The University of Chicago Medical Center, Chicago, IL, United States
| | - Aravind Athiviraham
- Molecular Oncology Laboratory, Department of Orthopaedic Surgery and Rehabilitation Medicine, The University of Chicago Medical Center, Chicago, IL, United States
| | - Sherwin Ho
- Molecular Oncology Laboratory, Department of Orthopaedic Surgery and Rehabilitation Medicine, The University of Chicago Medical Center, Chicago, IL, United States
| | - Michael J. Lee
- Molecular Oncology Laboratory, Department of Orthopaedic Surgery and Rehabilitation Medicine, The University of Chicago Medical Center, Chicago, IL, United States
| | - Kelly Hynes
- Molecular Oncology Laboratory, Department of Orthopaedic Surgery and Rehabilitation Medicine, The University of Chicago Medical Center, Chicago, IL, United States
| | - Jason Strelzow
- Molecular Oncology Laboratory, Department of Orthopaedic Surgery and Rehabilitation Medicine, The University of Chicago Medical Center, Chicago, IL, United States
| | - Tong-Chuan He
- Molecular Oncology Laboratory, Department of Orthopaedic Surgery and Rehabilitation Medicine, The University of Chicago Medical Center, Chicago, IL, United States
| | - Mostafa El Dafrawy
- Molecular Oncology Laboratory, Department of Orthopaedic Surgery and Rehabilitation Medicine, The University of Chicago Medical Center, Chicago, IL, United States
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12
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López E, Viatela Y, Prado M, Biolatti V, Bagnatto C. Fabrication of bioactive novel scaffold by solid-state reaction sintering for bone regeneration. J Biomed Mater Res B Appl Biomater 2020; 109:1074-1083. [PMID: 33283428 DOI: 10.1002/jbm.b.34770] [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: 08/27/2020] [Accepted: 11/10/2020] [Indexed: 11/10/2022]
Abstract
In this work we present a new type of scaffold obtained by solid-state reaction, simultaneous sintering of a mixture of precursor oxides, carbonates, and organic substances, the latter used for pore generation. Having variable local composition, exhibits excellent overall physicochemical and bioactivity response. Open porosity is about 50%-60% and its permeability 10-11 m2 . X-ray diffraction exhibits the presence of a sodium-calcium silicate and sodium-calcium phosphate crystalline phases. Additionally, by mechanical compression tests the range of failure stress obtained for the scaffolds was 0.3-1.1 MPa. The bioactivity and dissolution rate of the scaffolds were evaluated by in vitro tests. After 1 week soaking in simulated body fluid, the formation of a continuous hydroxyapatite layer, which does not differentiate local compositions, was observed. Our results from cell culture tests clearly indicate that during hydroxyapatite layer formation, scaffolds do not liberate any cytotoxic substances. Moreover, cells seeded in the hydroxyapatite-covered scaffolds grew better than the control.
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Affiliation(s)
- Erika López
- Centro Atómico Constituyentes, Instituto Sábato (UNSAM, CNEA), Comisión Nacional de Energía Atómica (CNEA), Av. Gral. Paz 1499, Buenos Aires, Prov. Buenos Aires, B1650KNA, Argentina
| | - Yrina Viatela
- División Aplicaciones Médicas e Industriales, Departamento Materiales Nucleares, Centro Atómico Barilcohe, Comisión Nacional de Energía Atómica(CNEA), Av. Bustillo 9500, S. C. de Bariloche, Río Negro, R8402AGP, Argentina.,Instituo Balseiro, Universidad Nacional de Cuyo, S. C. de Bariloche, Río Negro, R8400AGP, Argentina
| | - Miguel Prado
- División Aplicaciones Médicas e Industriales, Departamento Materiales Nucleares, Centro Atómico Barilcohe, Comisión Nacional de Energía Atómica(CNEA), Av. Bustillo 9500, S. C. de Bariloche, Río Negro, R8402AGP, Argentina.,Consejo Nacional de Investigaciones Científicas y Técnicas, Bariloche, Río Negro, R8402AGP, Argentina
| | - Vanesa Biolatti
- Comisión Nacional de Energía Atómica (CNEA), Centro de Medicina Nuclear y Radioterapia-Instituto de Tecnologías Nucleares para la Salud (INTECNUS); Laboratorio de Radiobiología y Biodosimetría, S.C. de Bariloche, Río Negro, Argentina
| | - Carolina Bagnatto
- Consejo Nacional de Investigaciones Científicas y Técnicas, Bariloche, Río Negro, R8402AGP, Argentina.,Instituto de Energía y Desarrollo Sustentable, Centro Atómico Bariloche, Comisión Nacional de Energía Atómica, S. C. de Bariloche, Río Negro, R8402AGP, Argentina
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13
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Ghiasi B, Sefidbakht Y, Mozaffari-Jovin S, Gharehcheloo B, Mehrarya M, Khodadadi A, Rezaei M, Ranaei Siadat SO, Uskoković V. Hydroxyapatite as a biomaterial - a gift that keeps on giving. Drug Dev Ind Pharm 2020; 46:1035-1062. [PMID: 32476496 DOI: 10.1080/03639045.2020.1776321] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The synthetic analogue to biogenic apatite, hydroxyapatite (HA) has a number of physicochemical properties that make it an attractive candidate for diagnosis, treatment of disease and augmentation of biological tissues. Here we describe some of the recent studies on HA, which may provide bases for a number of new medical applications. The content of this review is divided to different medical application modes utilizing HA, including tissue engineering, medical implants, controlled drug delivery, gene therapies, cancer therapies and bioimaging. A number of advantages of HA over other biomaterials emerge from this discourse, including (i) biocompatibility, (ii) bioactivity, (iii) relatively simple synthesis protocols for the fabrication of nanoparticles with specific sizes and shapes, (iv) smart response to environmental stimuli, (v) facile functionalization and surface modification through noncovalent interactions, and (vi) the capacity for being simultaneously loaded with a wide range of therapeutic agents and switched to bioimaging modalities for uses in theranostics. A special section is dedicated to analysis of the safety of particulate HA as a component of parenterally administrable medications. It is concluded that despite the fact that many benefits come with the usage of HA, its deficiencies and potential side effects must be addressed before the translation to the clinical domain is pursued. Although HA has been known in the biomaterials world as the exemplar of safety, this safety proves to be the function of size, morphology, surface ligands and other structural and compositional parameters defining the particles. For this reason, each HA, especially when it comes in a novel structural form, must be treated anew from the safety research angle before being allowed to enter the clinical stage.
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Affiliation(s)
- Behrad Ghiasi
- Protein Research Center, Shahid Beheshti University, Tehran, Iran
| | - Yahya Sefidbakht
- Protein Research Center, Shahid Beheshti University, Tehran, Iran.,Nanobiotechnology Laboratory, The Faculty of New Technologies Engineering (NTE), Shahid Beheshti University, Tehran, Iran
| | - Sina Mozaffari-Jovin
- Medical Genetics Research Center, Mashhad University of Medical Sciences, Mashhad, Iran.,Department of Medical Genetics, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | | | | | - Arash Khodadadi
- Department of Pharmaceutics, Faculty of Pharmacy, Kerman University of Medical Science, Kerman, Iran
| | - Maryam Rezaei
- Institute of Biochemistry and Biophysics (IBB), Tehran University, Tehran, Iran
| | - Seyed Omid Ranaei Siadat
- Protein Research Center, Shahid Beheshti University, Tehran, Iran.,Nanobiotechnology Laboratory, The Faculty of New Technologies Engineering (NTE), Shahid Beheshti University, Tehran, Iran
| | - Vuk Uskoković
- Department of Mechanical and Aerospace Engineering, University of California, Irvine, CA, USA
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14
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Bolaños RV, Castilho M, de Grauw J, Cokelaere S, Plomp S, Groll J, van Weeren PR, Gbureck U, Malda J. Long-Term in Vivo Performance of Low-Temperature 3D-Printed Bioceramics in an Equine Model. ACS Biomater Sci Eng 2020; 6:1681-1689. [PMID: 33455387 DOI: 10.1021/acsbiomaterials.9b01819] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Bone has great self-healing capacity, but above a certain critical size, bone defects will not heal spontaneously, requiring intervention to achieve full healing. Among the synthetic calcium phosphate (CaP) bone replacement materials, brushite (CaHPO4·2H2O)-based materials are of particular interest because of their degree of solubility and the related high potential to promote bone regeneration after dissolution. They can be produced tailor-made using modern three-dimensional (3D) printing technology. Although this type of implant has been widely tested in vitro, there are only limited in vivo data and less so in a relevant large animal model. In this study, material properties of a 3D-printed brushite-based scaffold are characterized, after which the material is tested by in vivo orthotopic implantation in the equine tuber coxae for 6 months. The implantation procedure was easy to perform and was well tolerated by the animals, which showed no detectable signs of discomfort. In vitro tests showed that compressive strength along the vertical axis of densely printed material was around 13 MPa, which was reduced to approximately 8 MPa in the cylindrical porous implant. In vivo, approximately 40% of the visible volume of the implants was degraded after 6 months and replaced by bone, showing the capacity to stimulate new bone formation. Histologically, ample bone ingrowth was observed. In contrast, empty defects were filled with fibrous tissue only, confirming the material's osteoconductive capacity. It is concluded that this study provides proof that the 3D-printed brushite implants were able to promote new bone growth after 6 months' implantation in a large animal model and that the new equine tuber coxae bone model that was used is a promising tool for bone regeneration studies.
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Affiliation(s)
- Rafael Vindas Bolaños
- Cátedra de Cirugı́a de Especies Mayores, Escuela de Medicina Veterinaria, Universidad Nacional, Avenida 1, Calle 9, 86-3000, Heredia, Costa Rica.,Department of Equine Sciences, Faculty of Veterinary Medicine, Utrecht University, Yalelaan 1, 3584 CL Utrecht, The Netherlands.,Regenerative Medicine Center Utrecht, Uppsalalaan 8, 3584 CT Utrecht, The Netherlands
| | - Miguel Castilho
- Regenerative Medicine Center Utrecht, Uppsalalaan 8, 3584 CT Utrecht, The Netherlands.,Department of Orthopaedics, Division of Surgical Specialties, University Medical Center Utrecht, Utrecht University, Heidelberglaan 100, 3584 CX Utrecht, The Netherlands
| | - Janny de Grauw
- Department of Equine Sciences, Faculty of Veterinary Medicine, Utrecht University, Yalelaan 1, 3584 CL Utrecht, The Netherlands.,Regenerative Medicine Center Utrecht, Uppsalalaan 8, 3584 CT Utrecht, The Netherlands
| | - Stefan Cokelaere
- Department of Equine Sciences, Faculty of Veterinary Medicine, Utrecht University, Yalelaan 1, 3584 CL Utrecht, The Netherlands
| | - Saskia Plomp
- Department of Equine Sciences, Faculty of Veterinary Medicine, Utrecht University, Yalelaan 1, 3584 CL Utrecht, The Netherlands.,Regenerative Medicine Center Utrecht, Uppsalalaan 8, 3584 CT Utrecht, The Netherlands
| | - Jürgen Groll
- Department of Functional Materials in Medicine and Dentistry, University of Würzburg, Pleicherwall 2, D-97070 Würzburg, Germany
| | - P René van Weeren
- Department of Equine Sciences, Faculty of Veterinary Medicine, Utrecht University, Yalelaan 1, 3584 CL Utrecht, The Netherlands.,Regenerative Medicine Center Utrecht, Uppsalalaan 8, 3584 CT Utrecht, The Netherlands
| | - Uwe Gbureck
- Department of Functional Materials in Medicine and Dentistry, University of Würzburg, Pleicherwall 2, D-97070 Würzburg, Germany
| | - Jos Malda
- Department of Equine Sciences, Faculty of Veterinary Medicine, Utrecht University, Yalelaan 1, 3584 CL Utrecht, The Netherlands.,Regenerative Medicine Center Utrecht, Uppsalalaan 8, 3584 CT Utrecht, The Netherlands.,Department of Orthopaedics, Division of Surgical Specialties, University Medical Center Utrecht, Utrecht University, Heidelberglaan 100, 3584 CX Utrecht, The Netherlands
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15
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Maazouz Y, Rentsch I, Lu B, Santoni BLG, Doebelin N, Bohner M. In vitro measurement of the chemical changes occurring within β-tricalcium phosphate bone graft substitutes. Acta Biomater 2020; 102:440-457. [PMID: 31756552 DOI: 10.1016/j.actbio.2019.11.035] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2019] [Revised: 10/18/2019] [Accepted: 11/18/2019] [Indexed: 12/13/2022]
Abstract
Several mechanisms proposed to explain the osteoinductive potential of calcium phosphates involve surface mineralization ("bioactivity") and mention the occurrence of concentration gradients between the inner and the outer part of the implanted material. Determining the evolution of the local chemical environment occurring inside the pores of an implanted bone graft substitute (BGS) is therefore highly relevant. A quantitative and fast method was developed to measure the chemical changes occurring within the pores of β-Tricalcium Phosphate (β-TCP) granules incubated in a simulated body fluid. A factorial design of experiment was used to test the effect of particle size, specific surface area, microporosity, and purity of the β-TCP granules. Large pH, calcium and phosphate concentration changes were observed inside the BGS and lasted for several days. The kinetics and magnitude of these changes (up to 2 pH units) largely depended on the processing and properties of the granules. Interestingly, processing parameters that increased the kinetics and magnitude of the local chemical changes are parameters considered to favor calcium phosphate osteoinduction, suggesting that the model might be useful to predict the osteoinductive potential of BGSs. STATEMENT OF SIGNIFICANCE: Recent results suggest that in situ mineralization of biomaterials (polymers, ceramics, metals) might be key in their ability to trigger ectopic bone formation. This is the reason why the effect on in situ mineralization of various synthesis parameters of β-tricalcium phosphate granules was studied (size, microporosity, specific surface area, and Ca/P molar ratio). To the best of our knowledge, this is the first article devoted to the chemical changes occurring within the pores of a bone graft substitute. We believe that the manuscript will prove to be highly important in the design and mechanistic understanding of drug-free osteoinductive biomaterials.
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16
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17
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Sadowska JM, Wei F, Guo J, Guillem-Marti J, Lin Z, Ginebra MP, Xiao Y. The effect of biomimetic calcium deficient hydroxyapatite and sintered β-tricalcium phosphate on osteoimmune reaction and osteogenesis. Acta Biomater 2019; 96:605-618. [PMID: 31269454 DOI: 10.1016/j.actbio.2019.06.057] [Citation(s) in RCA: 73] [Impact Index Per Article: 14.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2019] [Revised: 06/25/2019] [Accepted: 06/27/2019] [Indexed: 11/15/2022]
Abstract
Biomaterial implantation triggers inflammatory reactions. Understanding the effect of physicochemical features of biomaterials on the release of inflammatory cytokines from immune cells would be of great interest in view of designing bone graft materials to enhance the healing of bone defects. The present work investigated the interactions of two chemically and texturally different calcium phosphate (CaPs) substrates with macrophages, one of the main innate immune cells, and its further impact on osteogenic differentiation of bone forming cells. The behaviour of macrophages seeded on biomimetic calcium deficient hydroxyapatite (CDHA) and sintered β-tricalcium phosphate (β-TCP) was assessed in terms of the release of inflammatory cytokines and osteoclastogenic factors. The osteogenic differentiation of bone progenitor cells (bone marrow stromal cells (BMSCs) and osteoblastic cell line (SaOS-2)) were subsequently studied by incubating with the conditioned medium induced by macrophage-CaPs interaction in order to reveal the effect of immune cell reaction to CaPs on osteogenic differentiation. It was found that the incubation of macrophages with CaPs substrates caused a decrease of pro-inflammatory cytokines, more pronounced for β-TCP compared with CDHA showing significantly decreased IL-6, TNF-a, and iNOS. However, the macrophage-CDHA interaction resulted in a more favourable environment for osteogenic differentiation of osteoblasts with more collagen type I production and osteogenic genes (Runx2, BSP) expression, suggesting that osteogenic differentiation of bone cells is not only determined by the nature of biomaterials, but also significantly influenced by the inflammatory environment generated by the interaction of immune cells and biomaterials. STATEMENT OF SIGNIFICANCE: The field of osteoimmunology highlights the importance of the cross-talk between immune and bone cells for effective bone regeneration. This tight interaction opens the door to new strategies that encompass the development of smart cell-instructive biomaterials which performance covers the events from early inflammation to osteogenesis. The present work links the anti-inflammatory and osteoimmunomodulatory features of synthetic bone grafts to their chemistry and texture, focussing on the cross-talk between macrophages and two major orchestrators of bone healing, namely primary mesenchymal stem cells and osteoblasts. The results emphasize the importance of the microenvironment created through the interaction between the substrate and the immune cells as it can stimulate osteogenic events and subsequently foster bone healing.
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Affiliation(s)
- Joanna M Sadowska
- Biomaterials, Biomechanics and Tissue Engineering Group, Department of Materials Science and Metallurgical Engineering, Universitat Politècnica de Catalunya (UPC), Av. Eduard Maristany 16, 08019 Barcelona, Spain; Barcelona Research Centre in Multiscale Science and Engineering, Universitat Politècnica de Catalunya (UPC), Av. Eduard Maristany 16, 08019 Barcelona, Spain.
| | - Fei Wei
- Institute of Health and Biomedical Innovation and the Australia-China Centre for Tissue Engineering and Regenerative Medicine (ACCTERM), Queensland University of Technology, Brisbane, QLD 4059, Australia.
| | - Jia Guo
- Institute of Health and Biomedical Innovation and the Australia-China Centre for Tissue Engineering and Regenerative Medicine (ACCTERM), Queensland University of Technology, Brisbane, QLD 4059, Australia; Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-sen University and Guanghua Provincial Key Laboratory of Stomatology, Guangzhou, Guangdong 510055, People's Republic of China.
| | - Jordi Guillem-Marti
- Biomaterials, Biomechanics and Tissue Engineering Group, Department of Materials Science and Metallurgical Engineering, Universitat Politècnica de Catalunya (UPC), Av. Eduard Maristany 16, 08019 Barcelona, Spain; Barcelona Research Centre in Multiscale Science and Engineering, Universitat Politècnica de Catalunya (UPC), Av. Eduard Maristany 16, 08019 Barcelona, Spain.
| | - Zhengmei Lin
- Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-sen University and Guanghua Provincial Key Laboratory of Stomatology, Guangzhou, Guangdong 510055, People's Republic of China.
| | - Maria-Pau Ginebra
- Biomaterials, Biomechanics and Tissue Engineering Group, Department of Materials Science and Metallurgical Engineering, Universitat Politècnica de Catalunya (UPC), Av. Eduard Maristany 16, 08019 Barcelona, Spain; Barcelona Research Centre in Multiscale Science and Engineering, Universitat Politècnica de Catalunya (UPC), Av. Eduard Maristany 16, 08019 Barcelona, Spain; Institute for Bioengineering of Catalonia (IBEC), The Barcelona Institute of Science and Technology, Baldiri Reixac 10-12, 08028 Barcelona, Spain.
| | - Yin Xiao
- Institute of Health and Biomedical Innovation and the Australia-China Centre for Tissue Engineering and Regenerative Medicine (ACCTERM), Queensland University of Technology, Brisbane, QLD 4059, Australia.
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18
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Park JW, Hanawa T, Chung JH. The relative effects of Ca and Mg ions on MSC osteogenesis in the surface modification of microrough Ti implants. Int J Nanomedicine 2019; 14:5697-5711. [PMID: 31413570 PMCID: PMC6662177 DOI: 10.2147/ijn.s214363] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2019] [Accepted: 07/06/2019] [Indexed: 11/23/2022] Open
Abstract
Purpose Calcium (Ca) and magnesium (Mg) ions have been used as promising bioactive ions in the surface chemistry modification of titanium (Ti) bone implants to increase bone regeneration capacity. However, it is not clear which (Ca or Mg) plays the more important role in the early osteogenic differentiation of mesenchymal stem cells (MSCs) when applied to the surface of commercially available microstructured Ti implants. This study investigated the relative effect of these two ions on the early osteogenic functionality of primary mouse bone marrow MSCs in order to obtain insights into the surface design of Ti implants with enhanced early osteogenic capacity. Methods and results Wet chemical treatment was performed to modify a microrough Ti implant surface using Ca or Mg ions. Both the Ca and Mg-incorporated surfaces accelerated early cellular events and the subsequent osteogenic differentiation of MSCs compared with an unmodified microrough Ti surface. Surface Mg modification exhibited a more potent osteoblast differentiation-promoting effect than the Ca modification. Surface Mg incorporation markedly inhibited the phosphorylation of β-catenin. Conclusion These results indicate that alteration of the surface chemistry of microstructured Ti implants by wet chemical treatment with Mg ions exerts a more effect on promoting the early osteogenic differentiation of MSCs than Ca ions by enhancing early cellular functions, including focal adhesion development and stabilization of intracellular β-catenin.
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Affiliation(s)
- Jin-Woo Park
- Department of Periodontology, School of Dentistry, Kyungpook National University, Daegu 41940, Republic of Korea
| | - Takao Hanawa
- Department of Metallic Biomaterials, Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University, Tokyo 101-0062, Japan
| | - Jong-Hyuk Chung
- Department of Periodontology, School of Dentistry, Kyung Hee University, Seoul, Republic of Korea
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19
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Jeong J, Kim JH, Shim JH, Hwang NS, Heo CY. Bioactive calcium phosphate materials and applications in bone regeneration. Biomater Res 2019; 23:4. [PMID: 30675377 PMCID: PMC6332599 DOI: 10.1186/s40824-018-0149-3] [Citation(s) in RCA: 390] [Impact Index Per Article: 78.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2018] [Accepted: 12/07/2018] [Indexed: 12/30/2022] Open
Abstract
BACKGROUND Bone regeneration involves various complex biological processes. Many experiments have been performed using biomaterials in vivo and in vitro to promote and understand bone regeneration. Among the many biomaterials, calcium phosphates which exist in the natural bone have been conducted a number of studies because of its bone regenerative property. It can be directly contributed to bone regeneration process or assist in the use of other biomaterials. Therefore, it is widely used in many applications and has been continuously studied. MAINBODY Calcium phosphate has been widely used in bone regeneration applications because it shows osteoconductive and in some cases osteoinductive features. The release of calcium and phosphorus ions regulates the activation of osteoblasts and osteoclasts to facilitate bone regeneration. The control of surface properties and porosity of calcium phosphate affects cell/protein adhesion and growth and regulates bone mineral formation. Properties affecting bioactivity vary depending on the types of calcium phosphates such as HAP, TCP and can be utilized in various applications because of differences in ion release, solubility, stability, and mechanical strength. In order to make use of these properties, different calcium phosphates have been used together or mixed with other materials to complement their disadvantages and to highlight their advantages. Calcium phosphate has been utilized to improve bone regeneration in ways such as increasing osteoconductivity for bone ingrowth, enhancing osteoinductivity for bone mineralization with ion release control, and encapsulating drugs or growth factors. CONCLUSION Calcium phosphate has been used for bone regeneration in various forms such as coating, cement and scaffold based on its unique bioactive properties and bone regeneration effectiveness. Additionally, several studies have been actively carried out to improve the efficacy of calcium phosphate in combination with various healing agents. By summarizing the properties of calcium phosphate and its research direction, we hope that calcium phosphate can contribute to the clinical treatment approach for bone defect and disease.
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Affiliation(s)
- Jiwoon Jeong
- Interdisciplinary Program in Bioengineering, Seoul National University, Seoul, 152-742 Republic of Korea
| | - Jung Hun Kim
- School of Chemical and Biological Engineering, Institute of Chemical Processes, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 151-742 Republic of Korea
| | - Jung Hee Shim
- Department of Plastic and Reconstructive Surgery, Seoul National University Bundang Hospital, Seongnam, Republic of Korea
| | - Nathaniel S. Hwang
- Interdisciplinary Program in Bioengineering, Seoul National University, Seoul, 152-742 Republic of Korea
- School of Chemical and Biological Engineering, Institute of Chemical Processes, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 151-742 Republic of Korea
- N-Bio/BioMAX Institute, Seoul National University, Seoul, 152-742 Republic of Korea
| | - Chan Yeong Heo
- Interdisciplinary Program in Bioengineering, Seoul National University, Seoul, 152-742 Republic of Korea
- Department of Plastic and Reconstructive Surgery, College of Medicine, Seoul National University, Seoul, Republic of Korea
- Department of Plastic and Reconstructive Surgery, Seoul National University Bundang Hospital, Seongnam, Republic of Korea
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Kruppke B, Heinemann C, Wagner AS, Farack J, Wenisch S, Wiesmann HP, Hanke T. Strontium ions promote in vitro human bone marrow stromal cell proliferation and differentiation in calcium-lacking media. Dev Growth Differ 2018; 61:166-175. [PMID: 30585307 DOI: 10.1111/dgd.12588] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2018] [Revised: 11/20/2018] [Accepted: 11/21/2018] [Indexed: 01/07/2023]
Abstract
In order to investigate the influence of calcium and strontium ion concentration on human bone marrow stromal cells and their differentiation to osteoblasts, different cell culture media have been used. Even though this study does not contain a bone substitute material, the reason for this study was the decrease of cation concentration by many biomaterials, due to induced apatite precipitation. As a consequence, the reduced calcium ion concentration is known to affect osteoblastic development. Therefore, the main focus was put on the question, whether an increased strontium concentration (in the range of mM) might be suitable to compensate the lack of calcium ions. The effect of solely strontium ions-with only calcium in the media resulting from fetal calf serum-was investigated. Commercially available calcium-free medium (modified α-MEM) was tested in comparison with media with varied calcium ion concentrations (0.9, 1.8, and 3.6 mM), or strontium ion concentration (0.4, 0.9, 1.8, and 3.6 mM). In case of calcium, higher concentrations cause increased proliferation, while differentiation was shifted to earlier points of time. Differentiation was increased by solely strontium ions only at 0.4-0.9 mM, while proliferation was highest for 0.9-1.8 mM. From these results, it can be concluded that strontium is able to compensate a lack of calcium to a certain degree. Thus, in contrast to calcium ion release, a strontium ion release from bone substitute materials might be applicable for stimulation of bone regeneration without influencing the media saturation.
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Affiliation(s)
- Benjamin Kruppke
- Max Bergmann Center of Biomaterials and Institute of Materials Science, Technische Universität Dresden, Dresden, Germany
| | - Christiane Heinemann
- Max Bergmann Center of Biomaterials and Institute of Materials Science, Technische Universität Dresden, Dresden, Germany
| | - Alena-Svenja Wagner
- Clinic of Small Animals, c/o Institute of Veterinary-Anatomy, -Histology and -Embryology, Justus-Liebig-University Gießen, Gießen, Germany.,Institute of Veterinary Physiology and Biochemistry, Justus-Liebig-University Gießen, Gießen, Germany
| | - Jana Farack
- Max Bergmann Center of Biomaterials and Institute of Materials Science, Technische Universität Dresden, Dresden, Germany
| | - Sabine Wenisch
- Clinic of Small Animals, c/o Institute of Veterinary-Anatomy, -Histology and -Embryology, Justus-Liebig-University Gießen, Gießen, Germany
| | - Hans-Peter Wiesmann
- Max Bergmann Center of Biomaterials and Institute of Materials Science, Technische Universität Dresden, Dresden, Germany
| | - Thomas Hanke
- Max Bergmann Center of Biomaterials and Institute of Materials Science, Technische Universität Dresden, Dresden, Germany
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Sadowska JM, Guillem-Marti J, Espanol M, Stähli C, Döbelin N, Ginebra MP. In vitro response of mesenchymal stem cells to biomimetic hydroxyapatite substrates: A new strategy to assess the effect of ion exchange. Acta Biomater 2018; 76:319-332. [PMID: 29933107 DOI: 10.1016/j.actbio.2018.06.025] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2018] [Revised: 05/29/2018] [Accepted: 06/18/2018] [Indexed: 02/08/2023]
Abstract
Biomaterials can interact with cells directly, that is, by direct contact of the cells with the material surface, or indirectly, through soluble species that can be released to or uptaken from the surrounding fluids. However, it is difficult to characterise the relevance of this fluid-mediated interaction separately from the topography and composition of the substrate, because they are coupled variables. These fluid-mediated interactions are amplified in the case of highly reactive calcium phosphates (CaPs) such as biomimetic calcium deficient hydroxyapatite (CDHA), particularly in static in vitro cultures. The present work proposes a strategy to decouple the effect of ion exchange from topographical features by adjusting the volume ratio between the cell culture medium and biomaterial (VCM/VB). Increasing this ratio allowed mitigating the drastic ionic exchanges associated to the compositional changes experienced by the material exposed to the cell culture medium. This strategy was validated using rat mesenchymal stem cells (rMSCs) cultured on CDHA and beta-tricalcium phosphate (β-TCP) discs using different VCM/VB ratios. Whereas in the case of β-TCP the cell response was not affected by this ratio, a significant effect on cell adhesion and proliferation was found for the more reactive CDHA. The ionic exchange, produced by CDHA at low VCM/VB, altered cell adhesion due to the reduced number of focal adhesions, caused cell shrinkage and further rMCSs apoptosis. This was mitigated when using a high VCM/VB, which attenuated the changes of calcium and phosphate concentrations in the cell culture medium, resulting in rMSCs spreading and a viability over time. Moreover, rMSCs showed an earlier expression of osteogenic genes on CDHA compared to sintered β-TCP when extracellular calcium fluctuations were reduced. STATEMENT OF SIGNIFICANCE Fluid mediated interactions play a significant role in the bioactivity of calcium phosphates. Ionic exchange is amplified in the case of biomimetic hydroxyapatite, which makes the in vitro characterisation of cell-material interactions especially challenging. The present work proposes a novel and simple strategy to explore the mechanisms of interaction of biomimetic and sintered calcium phosphates with mesenchymal stem cells. The effects of topography and ion exchange are analysed separately by modifying the volume ratio between cell culture medium and biomaterial. High ionic fluctuations interfered in the maturation of focal adhesions, hampering cell adhesion and leading to increased apoptosis and reduced proliferation rate.
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22
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Effect of nano-structural properties of biomimetic hydroxyapatite on osteoimmunomodulation. Biomaterials 2018; 181:318-332. [PMID: 30098568 DOI: 10.1016/j.biomaterials.2018.07.058] [Citation(s) in RCA: 69] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2018] [Revised: 07/22/2018] [Accepted: 07/28/2018] [Indexed: 12/27/2022]
Abstract
Immune cells are sensitive to the microstructural and textural properties of materials. Tuning the structural features of synthetic bone grafts could be a valuable strategy to regulate the specific response of the immune system, which in turn modulates the activity of bone cells. The aim of this study was to analyse the effect of the structural characteristics of biomimetic calcium deficient hydroxyapatite (CDHA) on the innate immune response of macrophages and the subsequent impact on osteogenesis and osteoclastogenesis. Murine RAW 264.7 cells were cultured, under standard and inflammatory conditions, on chemically identical CDHA substrates that varied in microstructure and porosity. The impact on osteogenesis was evaluated by incubating osteoblastic cells (SaOS-2) with RAW-CDHA conditioned extracts. The results showed that macrophages were sensitive to different textural and structural properties of CDHA. Under standard conditions, the impact of inflammatory cytokine production by RAW cells cultured on CDHA played a significant role in the degradation of substrates, suggesting the impact of resorptive behaviour of RAW cells on biomimetic surfaces. Osteoblast differentiation was stimulated by the conditioned media collected from RAW cells cultured on needle-like nanostructured CDHA. The results demonstrated that needle-like nanostructured CDHA was able to generate a favourable osteoimmune environment to regulate osteoblast differentiation and osteogenesis. Under inflammatory conditions, the incubation of RAW cells with less porous CDHA resulted in a decreased gene expression and release of pro-inflammatory cytokines.
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Meininger M, Meininger S, Groll J, Gbureck U, Moseke C. Silver and copper addition enhances the antimicrobial activity of calcium hydroxide coatings on titanium. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2018; 29:61. [PMID: 29736777 DOI: 10.1007/s10856-018-6065-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/08/2017] [Accepted: 04/18/2018] [Indexed: 06/08/2023]
Abstract
Electrochemically assisted deposition of Ca(OH)2 (Portlandite) coatings on titanium surfaces has been proven as a promising method to provide the substrate with a most desirable combination of significant bacterial growth reduction on one hand and good biocompatibility on the other. Due to the rapid in vivo transformation of Ca(OH)2 to hydroxyapatite, the antimicrobial activity will be an ephemeral property of the coating when implanted into the human body. In this study, the ability to reduce bacterial growth of such portlandite coatings was significantly enhanced by an ionic modification with copper and silver ions. Antibacterial tests revealed a noticeably elevated reduction of bacterial growth, especially for copper and even at a relatively low copper content of about 0.3 wt.%. In addition, the cytocompatibility, a crucial prerequisite for potential in vivo biocompatibility, of the copper-modified coating was comparable to pure calcium hydroxide coatings.
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Affiliation(s)
- M Meininger
- Department for Functional Materials in Medicine and Dentistry, School of Dentistry, University of Würzburg, Pleicherwall 2, D-97070, Würzburg, Germany
| | - S Meininger
- Department for Functional Materials in Medicine and Dentistry, School of Dentistry, University of Würzburg, Pleicherwall 2, D-97070, Würzburg, Germany
| | - J Groll
- Department for Functional Materials in Medicine and Dentistry, School of Dentistry, University of Würzburg, Pleicherwall 2, D-97070, Würzburg, Germany
| | - U Gbureck
- Department for Functional Materials in Medicine and Dentistry, School of Dentistry, University of Würzburg, Pleicherwall 2, D-97070, Würzburg, Germany.
| | - C Moseke
- Institute for Biomedical Engineering (IBMT), University of Applied Sciences Mittelhessen (THM), Wiesenstraße 14, D-35390, Gießen, Germany
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The Mechanical Properties of Biocompatible Apatite Bone Cement Reinforced with Chemically Activated Carbon Fibers. MATERIALS 2018; 11:ma11020192. [PMID: 29373487 PMCID: PMC5848889 DOI: 10.3390/ma11020192] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/14/2017] [Revised: 01/23/2018] [Accepted: 01/24/2018] [Indexed: 12/11/2022]
Abstract
Calcium phosphate cement (CPC) is a well-established bone replacement material in dentistry and orthopedics. CPC mimics the physicochemical properties of natural bone and therefore shows excellent in vivo behavior. However, due to their brittleness, the application of CPC implants is limited to non-load bearing areas. Generally, the fiber-reinforcement of ceramic materials enhances fracture resistance, but simultaneously reduces the strength of the composite. Combining strong C-fiber reinforcement with a hydroxyapatite to form a CPC with a chemical modification of the fiber surface allowed us to adjust the fiber-matrix interface and consequently the fracture behavior. Thus, we could demonstrate enhanced mechanical properties of CPC in terms of bending strength and work of fracture to a strain of 5% (WOF5). Hereby, the strength increased by a factor of four from 9.2 ± 1.7 to 38.4 ± 1.7 MPa. Simultaneously, the WOF5 increased from 0.02 ± 0.004 to 2.0 ± 0.6 kJ∙m-2, when utilizing an aqua regia/CaCl₂ pretreatment. The cell proliferation and activity of MG63 osteoblast-like cells as biocompatibility markers were not affected by fiber addition nor by fiber treatment. CPC reinforced with chemically activated C-fibers is a promising bone replacement material for load-bearing applications.
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Lode A, Heiss C, Knapp G, Thomas J, Nies B, Gelinsky M, Schumacher M. Strontium-modified premixed calcium phosphate cements for the therapy of osteoporotic bone defects. Acta Biomater 2018; 65:475-485. [PMID: 29107056 DOI: 10.1016/j.actbio.2017.10.036] [Citation(s) in RCA: 62] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2017] [Revised: 10/18/2017] [Accepted: 10/23/2017] [Indexed: 01/16/2023]
Abstract
In this study a premixed strontium-containing calcium phosphate bone cement for the application in osteoporotic bone defects has been developed and characterised regarding its material and in vitro properties as well as minimally invasive applicability in balloon kyphoplasty. Strontium was introduced into the cement by substitution of one precursor component, CaCO3, with its strontium analogue, SrCO3. Using a biocompatible oil phase as carrier liquid, a cement paste that only set upon contact with aqueous environment was obtained. Strontium modification resulted in an increased strength of set cements and radiographic contrast; and the cements released biologically relevant doses of Sr2+-ions that were shown to enhance osteoprogenitor cell proliferation and osteogenic differentiation. Finally, applicability of strontium-containing cement pastes in balloon kyphoplasty was demonstrated in a human cadaver spine procedure. The cement developed in this study may therefore be well suited for minimally invasive, osteoporosis-related bone defect treatment. STATEMENT OF SIGNIFICANCE Strontium-releasing calcium phosphate bone cements are promising materials for the clinical regeneration of osteoporosis-related bone defects since they have been shown to stimulate bone formation and at the same time limit osteoclastic bone resorption. Today clinical practice favours minimally invasive surgical techniques, e.g. for vertebral fracture treatment, posing special demands on such cements. We have therefore developed a premixed, strontium-releasing bone cement with enhanced mechanical properties and high radiographic visibility that releases biologically relevant strontium concentrations and thus stimulates cells of the osteogenic lineage. In a pilot experiment we also exemplify its excellent suitability for minimally invasive balloon kyphoplasty procedures.
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Sadowska JM, Guillem-Marti J, Montufar EB, Espanol M, Ginebra MP. Biomimetic Versus Sintered Calcium Phosphates: The In Vitro Behavior of Osteoblasts and Mesenchymal Stem Cells. Tissue Eng Part A 2017; 23:1297-1309. [DOI: 10.1089/ten.tea.2016.0406] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- Joanna-Maria Sadowska
- Biomaterials, Biomechanics and Tissue Engineering Group, Department of Materials Science and Metallurgical Engineering, Technical University of Catalonia, Barcelona, Spain
- Centre for Research in Nanoengineering, Technical University of Catalonia, Barcelona, Spain
| | - Jordi Guillem-Marti
- Biomaterials, Biomechanics and Tissue Engineering Group, Department of Materials Science and Metallurgical Engineering, Technical University of Catalonia, Barcelona, Spain
- Centre for Research in Nanoengineering, Technical University of Catalonia, Barcelona, Spain
| | - Edgar Benjamin Montufar
- Biomaterials, Biomechanics and Tissue Engineering Group, Department of Materials Science and Metallurgical Engineering, Technical University of Catalonia, Barcelona, Spain
- Centre for Research in Nanoengineering, Technical University of Catalonia, Barcelona, Spain
| | - Montserrat Espanol
- Biomaterials, Biomechanics and Tissue Engineering Group, Department of Materials Science and Metallurgical Engineering, Technical University of Catalonia, Barcelona, Spain
- Centre for Research in Nanoengineering, Technical University of Catalonia, Barcelona, Spain
| | - Maria-Pau Ginebra
- Biomaterials, Biomechanics and Tissue Engineering Group, Department of Materials Science and Metallurgical Engineering, Technical University of Catalonia, Barcelona, Spain
- Centre for Research in Nanoengineering, Technical University of Catalonia, Barcelona, Spain
- Institute for Bioengineering of Catalonia, Barcelona, Spain
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Schamel M, Barralet JE, Groll J, Gbureck U. In vitro ion adsorption and cytocompatibility of dicalcium phosphate ceramics. Biomater Res 2017; 21:10. [PMID: 28616254 PMCID: PMC5465584 DOI: 10.1186/s40824-017-0096-4] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2017] [Accepted: 05/31/2017] [Indexed: 12/01/2022] Open
Abstract
BACKGROUND In vitro cell testing of degradable bioceramics such as brushite or monetite is often challenging due to the ion release into or adsorption from the culture medium. These ionic changes are then mostly responsible for cell proliferation and activity, which prohibits the investigation of effects originating from surface topography or further material modifications. METHODS Here, we aimed to solve this problem by developing a pre-conditioning regime following the repeated immersion of brushite and monetite samples in various Ca2+, Mg2+ and PO43- containing electrolytes, followed by studying ion adsorption / release as well as changes in phase composition and in vitro cytocompatibility with MG63 cells. RESULTS The results demonstrated that by using DMEM cell culture medium in a ratio of 10 ml/sample was sufficient to minimize changes of ionic composition after 7 d with a daily change of the medium. This leads to changes of the surface composition with dissolution of the brushite phase. In turn, this also positively influences the in vitro cytocompatibility with a 2-3 fold higher cell number and cell activity on the DMEM pretreated surfaces. CONCLUSIONS Controlled sample washing prior to cell testing using DMEM medium seems to be a valuable procedure not only to stabilize the pH during cell culture but also to maintain ion concentrations within a cell friendly range.
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Affiliation(s)
- Martha Schamel
- Department of Functional Materials in Medicine and Dentistry, University of Würzburg, 97070 Würzburg, Germany
| | - Jake E. Barralet
- Department of Surgery, Faculty of Medicine, Faculty of Dentistry, McGill University, Montreal, Quebec H3A 2B2 Canada
| | - Jürgen Groll
- Department of Functional Materials in Medicine and Dentistry, University of Würzburg, 97070 Würzburg, Germany
| | - Uwe Gbureck
- Department of Functional Materials in Medicine and Dentistry, University of Würzburg, 97070 Würzburg, Germany
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Ciapetti G, Di Pompo G, Avnet S, Martini D, Diez-Escudero A, Montufar EB, Ginebra MP, Baldini N. Osteoclast differentiation from human blood precursors on biomimetic calcium-phosphate substrates. Acta Biomater 2017; 50:102-113. [PMID: 27940198 DOI: 10.1016/j.actbio.2016.12.013] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2016] [Revised: 11/08/2016] [Accepted: 12/06/2016] [Indexed: 12/25/2022]
Abstract
The design of synthetic bone grafts to foster bone formation is a challenge in regenerative medicine. Understanding the interaction of bone substitutes with osteoclasts is essential, since osteoclasts not only drive a timely resorption of the biomaterial, but also trigger osteoblast activity. In this study, the adhesion and differentiation of human blood-derived osteoclast precursors (OCP) on two different micro-nanostructured biomimetic hydroxyapatite materials consisting in coarse (HA-C) and fine HA (HA-F) crystals, in comparison with sintered stoichiometric HA (sin-HA, reference material), were investigated. Osteoclasts were induced to differentiate by RANKL-containing supernatant using cell/substrate direct and indirect contact systems, and calcium (Ca++) and phosphorus (P5+) in culture medium were measured. We observed that OCP adhered to the experimental surfaces, and that osteoclast-like cells formed at a rate influenced by the micro- and nano-structure of HA, which also modulate extracellular Ca++. Qualitative differences were found between OCP on biomimetic HA-C and HA-F and their counterparts on plastic and sin-HA. On HA-C and HA-F cells shared typical features of mature osteoclasts, i.e. podosomes, multinuclearity, tartrate acid phosphatase (TRAP)-positive staining, and TRAP5b-enzyme release. However, cells were less in number compared to those on plastic or on sin-HA, and they did not express some specific osteoclast markers. In conclusion, blood-derived OCP are able to attach to biomimetic and sintered HA substrates, but their subsequent fusion and resorptive activity are hampered by surface micro-nano-structure. Indirect cultures suggest that fusion of OCP is sensitive to topography and to extracellular calcium. STATEMENT OF SIGNIFICANCE The novelty of the paper is the differentiation of human blood-derived osteoclast precursors, instead of mouse-derived macrophages as used in most studies, directly on biomimetic micro-nano structured HA-based surfaces, as triggered by osteoblast-produced factors (RANKL/OPG), and influenced by chemistry and topography of the substrate(s). Biomimetic HA-surfaces, like those obtained in calcium phosphate cements, are very different from the conventional calcium phosphate ceramics, both in terms of topography and ion exchange. The role of these factors in modulating precursors' differentiation and activity is analysed. The system is closely reproducing the physiological process of attachment of host cells and further maturation to osteoclasts toward resorption of the substrate, which occurs in vivo after filling bone defects with the calcium phosphate grafts.
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Affiliation(s)
- Gabriela Ciapetti
- Orthopaedic Pathophysiology and Regenerative Medicine Unit, Istituto Ortopedico Rizzoli, Bologna, Italy.
| | - Gemma Di Pompo
- Orthopaedic Pathophysiology and Regenerative Medicine Unit, Istituto Ortopedico Rizzoli, Bologna, Italy; Department of Biomedical and Neuromotor Sciences, University of Bologna, Italy.
| | - Sofia Avnet
- Orthopaedic Pathophysiology and Regenerative Medicine Unit, Istituto Ortopedico Rizzoli, Bologna, Italy.
| | - Desirée Martini
- Department of Biomedical and Neuromotor Sciences, University of Bologna, Italy.
| | - Anna Diez-Escudero
- Biomaterials, Biomechanics and Tissue Engineering Group, Department of Materials Science and Metallurgy, Technical University of Catalonia, BarcelonaTech (UPC), Barcelona, Spain.
| | - Edgar B Montufar
- Biomaterials, Biomechanics and Tissue Engineering Group, Department of Materials Science and Metallurgy, Technical University of Catalonia, BarcelonaTech (UPC), Barcelona, Spain.
| | - Maria-Pau Ginebra
- Biomaterials, Biomechanics and Tissue Engineering Group, Department of Materials Science and Metallurgy, Technical University of Catalonia, BarcelonaTech (UPC), Barcelona, Spain; Institute for Bioengineering of Catalonia, Barcelona, Spain.
| | - Nicola Baldini
- Orthopaedic Pathophysiology and Regenerative Medicine Unit, Istituto Ortopedico Rizzoli, Bologna, Italy; Department of Biomedical and Neuromotor Sciences, University of Bologna, Italy.
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Mestieri LB, Gomes-Cornélio AL, Rodrigues EM, Faria G, Guerreiro-Tanomaru JM, Tanomaru-Filho M. Cytotoxicity and Bioactivity of Calcium Silicate Cements Combined with Niobium Oxide in Different Cell Lines. Braz Dent J 2017; 28:65-71. [DOI: 10.1590/0103-6440201700525] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2016] [Accepted: 11/28/2016] [Indexed: 11/22/2022] Open
Abstract
Abstract The aim of this study was to evaluate the cytotoxicity and bioactivity of calcium silicate-based cements combined with niobium oxide (Nb2O5) micro and nanoparticles, comparing the response in different cell lines. This evaluation used four cell lines: two primary cultures (human dental pulp cells - hDPCs and human dental follicle cells - hDFCs) and two immortalized cultures (human osteoblast-like cells - Saos-2 and mouse periodontal ligament cells - mPDL). The tested materials were: White Portland Cement (PC), mineral trioxide aggregate (MTA), white Portland cement combined with microparticles (PC/Nb2O5µ) or nanoparticles (PC/Nb2O5n) of niobium oxide (Nb2O5). Cytotoxicity was evaluated by the methylthiazolyldiphenyl-tetrazolium bromide (MTT) and trypan blue exclusion assays and bioactivity by alkaline phosphatase (ALP) enzyme activity. Results were analyzed by ANOVA and Tukey test (a=0.05). PC/Nb2O5n presented similar or higher cell viability than PC/Nb2O5µ in all cell lines. Moreover, the materials presented similar or higher cell viability than MTA. Saos-2 exhibited high ALP activity, highlighting PC/Nb2O5µ material at 7 days of exposure. In conclusion, calcium silicate cements combined with micro and nanoparticles of Nb2O5 presented cytocompatibility and bioactivity, demonstrating the potential of Nb2O5 as an alternative radiopacifier agent for these cements. The different cell lines had similar response to cytotoxicity evaluation of calcium silicate cements. However, bioactivity was more accurately detected in human osteoblast-like cell line, Saos-2.
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Diez-Escudero A, Espanol M, Montufar EB, Di Pompo G, Ciapetti G, Baldini N, Ginebra MP. Focus Ion Beam/Scanning Electron Microscopy Characterization of Osteoclastic Resorption of Calcium Phosphate Substrates. Tissue Eng Part C Methods 2017; 23:118-124. [DOI: 10.1089/ten.tec.2016.0361] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Affiliation(s)
- Anna Diez-Escudero
- Biomaterials, Biomechanics and Tissue Engineering Group, Department of Materials Science and Metallurgical Engineering, Technical University of Catalonia (UPC), Barcelona, Spain
- Center for Research in NanoEngineering (CRnE), UPC, Barcelona, Spain
| | - Montserrat Espanol
- Biomaterials, Biomechanics and Tissue Engineering Group, Department of Materials Science and Metallurgical Engineering, Technical University of Catalonia (UPC), Barcelona, Spain
- Center for Research in NanoEngineering (CRnE), UPC, Barcelona, Spain
| | - Edgar B. Montufar
- Biomaterials, Biomechanics and Tissue Engineering Group, Department of Materials Science and Metallurgical Engineering, Technical University of Catalonia (UPC), Barcelona, Spain
- Center for Research in NanoEngineering (CRnE), UPC, Barcelona, Spain
| | - Gemma Di Pompo
- Orthopaedic Pathophysiology and Regenerative Medicine Unit, IstitutoOrtopedico Rizzoli, Bologna, Italy
- Department of Biomedical and Neuromotor Sciences, University of Bologna, Bologna, Italy
| | - Gabriela Ciapetti
- Orthopaedic Pathophysiology and Regenerative Medicine Unit, IstitutoOrtopedico Rizzoli, Bologna, Italy
| | - Nicola Baldini
- Orthopaedic Pathophysiology and Regenerative Medicine Unit, IstitutoOrtopedico Rizzoli, Bologna, Italy
- Department of Biomedical and Neuromotor Sciences, University of Bologna, Bologna, Italy
| | - Maria-Pau Ginebra
- Biomaterials, Biomechanics and Tissue Engineering Group, Department of Materials Science and Metallurgical Engineering, Technical University of Catalonia (UPC), Barcelona, Spain
- Center for Research in NanoEngineering (CRnE), UPC, Barcelona, Spain
- Institute for Bioengineering of Catalonia, Barcelona, Spain
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Mestieri LB, Tanomaru-Filho M, Gomes-Cornélio AL, Salles LP, Bernardi MIB, Guerreiro-Tanomaru JM. Radiopacity and cytotoxicity of Portland cement associated with niobium oxide micro and nanoparticles. J Appl Oral Sci 2015; 22:554-9. [PMID: 25591023 PMCID: PMC4307770 DOI: 10.1590/1678-775720140209] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2014] [Accepted: 09/03/2014] [Indexed: 11/22/2022] Open
Abstract
OBJECTIVE Mineral Trioxide Aggregate (MTA) is composed of Portland Cement (PC) and bismuth oxide (BO). Replacing BO for niobium oxide (NbO) microparticles (Nbµ) or nanoparticles (Nbη) may improve radiopacity and bioactivity. The aim of this study was to evaluate the radiopacity and cytotoxicity of the materials: (1) PC; (2) White MTA; (3) PC+30% Nbµ; (4) PC+30% Nbη. MATERIAL AND METHODS For the radiopacity test, specimens of the different materials were radiographed along an aluminum step-wedge. For cell culture assays, Saos-2 osteoblastic-cells (ATCC HTB-85) were used. Cell viability was evaluated through MTT assay, and bioactivity was assessed by alkaline phosphatase activity assay. RESULTS The results demonstrated higher radiopacity for MTA, followed by Nbµ and Nbη, which had similar values. Cell culture analysis showed that PC and PC+NbO associations promoted greater cell viability than MTA. CONCLUSIONS It was concluded that the combination of PC+NbO is a potential alternative for composition of MTA.
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Affiliation(s)
- Leticia Boldrin Mestieri
- Department of Restorative Dentistry, Araraquara Dental School, Univ. Estadual Paulista, Araraquara, SP, Brazil
| | - Mário Tanomaru-Filho
- Department of Restorative Dentistry, Araraquara Dental School, Univ. Estadual Paulista, Araraquara, SP, Brazil
| | - Ana Livia Gomes-Cornélio
- Department of Restorative Dentistry, Araraquara Dental School, Univ. Estadual Paulista, Araraquara, SP, Brazil
| | - Loise Pedrosa Salles
- Department of Restorative Dentistry, Araraquara Dental School, Univ. Estadual Paulista, Araraquara, SP, Brazil
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Dai Z, Li Y, Lu W, Jiang D, Li H, Yan Y, Lv G, Yang A. In vivo biocompatibility of new nano-calcium-deficient hydroxyapatite/poly-amino acid complex biomaterials. Int J Nanomedicine 2015; 10:6303-16. [PMID: 26504382 PMCID: PMC4605249 DOI: 10.2147/ijn.s90273] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Objective To evaluate the compatibility of novel nano-calcium-deficient hydroxyapatite/poly-amino acid (n-CDHA/PAA) complex biomaterials with muscle and bone tissue in an in vivo model. Methods Thirty-two New Zealand white rabbits were used in this study. Biomaterials were surgically implanted into each rabbit in the back erector spinae and in tibia with induced defect. Polyethylene was implanted into rabbits in the control group and n-CDHA/PAA into those of the experimental group. Animals were examined at four different points in time: 2 weeks, 4 weeks, 12 weeks, and 24 weeks after surgery. They were euthanized after embolization. Back erector spinae muscles with the surgical implants were examined after hematoxylin and eosin (HE) staining at these points in time. Tibia bones with the surgical implants were examined by X-ray and scanning electron microscopy (SEM) at these points in time to evaluate the interface of the bone with the implanted biomaterials. Bone tissues were sectioned and subjected to HE, Masson, and toluidine blue staining. Results HE staining of back erector spinae muscles at 4 weeks, 12 weeks, and 24 weeks after implantation of either n-CDHA/PAA or polyethylene showed disappearance of inflammation and normal arrangement in the peripheral tissue of implant biomaterials; no abnormal staining was observed. At 2 weeks after implantation, X-ray imaging of bone tissue samples in both experimental and control groups showed that the peripheral tissues of the implanted biomaterials were continuous and lacked bone osteolysis, absorption, necrosis, or osteomyelitis. The connection between implanted biomaterials and bone tissue was tight. The results of HE, Masson, toluidine blue staining and SEM confirmed that the implanted biomaterials were closely connected to the bone defect and that no rejection had taken place. The n-CDHA/PAA biomaterials induced differentiation of a large number of chondrocytes. New bone trabecula began to form at 4 weeks after implanting n-CDHA/PAA biomaterials, and lamellar bone gradually formed at 12 weeks and 24 weeks after implantation. Routine blood and kidney function tests showed no significant changes at 2 weeks and 24 weeks after implantation of both biomaterials. Conclusion n-CDHA/PAA composites showed good compatibility in in vivo model. In this study, n-CDHA/PAA were found to be safe, nontoxic, and biologically active in bone repair.
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Affiliation(s)
- Zhenyu Dai
- College of Physical Science and Technology, Sichuan University, Chengdu, People's Republic of China ; Department of Orthopedics, Chongqing Hospital of Traditional Chinese Medicine, Chongqing Medical University, Chongqing, People's Republic of China
| | - Yue Li
- Department of Clinical Laboratory, the Second Affiliated Hospital, Chongqing Medical University, Chongqing, People's Republic of China
| | - Weizhong Lu
- Department of Orthopedics, Chongqing Hospital of Traditional Chinese Medicine, Chongqing Medical University, Chongqing, People's Republic of China
| | - Dianming Jiang
- Department of Orthopedics, the First Affiliated Hospital, Chongqing Medical University, Chongqing, People's Republic of China
| | - Hong Li
- College of Physical Science and Technology, Sichuan University, Chengdu, People's Republic of China
| | - Yonggang Yan
- College of Physical Science and Technology, Sichuan University, Chengdu, People's Republic of China
| | - Guoyu Lv
- College of Physical Science and Technology, Sichuan University, Chengdu, People's Republic of China
| | - Aiping Yang
- College of Physical Science and Technology, Sichuan University, Chengdu, People's Republic of China
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Mestres G, Espanol M, Xia W, Persson C, Ginebra MP, Ott MK. Inflammatory response to nano- and microstructured hydroxyapatite. PLoS One 2015; 10:e0120381. [PMID: 25837264 PMCID: PMC4383585 DOI: 10.1371/journal.pone.0120381] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2014] [Accepted: 01/22/2015] [Indexed: 11/19/2022] Open
Abstract
The proliferation and activation of leukocytes upon contact with a biomaterial play a crucial role in the degree of inflammatory response, which may then determine the clinical failure or success of an implanted biomaterial. The aim of this study was to evaluate whether nano- and microstructured biomimetic hydroxyapatite substrates can influence the growth and activation of macrophage-like cells. Hydroxyapatite substrates with different crystal morphologies consisting of an entangled network of plate-like and needle-like crystals were evaluated. Macrophage proliferation was evaluated on the material surface (direct contact) and also in extracts i.e. media modified by the material (indirect contact). Additionally, the effect of supplementing the extracts with calcium ions and/or proteins was investigated. Macrophage activation on the substrates was evaluated by quantifying the release of reactive oxygen species and by morphological observations. The results showed that differences in the substrate's microstructure play a major role in the activation of macrophages as there was a higher release of reactive oxygen species after culturing the macrophages on plate-like crystals substrates compared to the almost non-existent release on needle-like substrates. However, the difference in macrophage proliferation was ascribed to different ionic exchanges and protein adsorption/retention from the substrates rather than to the texture of materials.
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Affiliation(s)
- Gemma Mestres
- Materials in Medicine, Div. of Applied Materials Science, Dpt. Engineering Sciences, Uppsala University, Uppsala, Sweden
| | - Montserrat Espanol
- Biomaterials, Biomechanics and Tissue Engineering, Dpt. Materials Science and Metallurgy, Technical University of Catalonia, Barcelona, Spain
| | - Wei Xia
- Materials in Medicine, Div. of Applied Materials Science, Dpt. Engineering Sciences, Uppsala University, Uppsala, Sweden
| | - Cecilia Persson
- Materials in Medicine, Div. of Applied Materials Science, Dpt. Engineering Sciences, Uppsala University, Uppsala, Sweden
| | - Maria-Pau Ginebra
- Biomaterials, Biomechanics and Tissue Engineering, Dpt. Materials Science and Metallurgy, Technical University of Catalonia, Barcelona, Spain
| | - Marjam Karlsson Ott
- Materials in Medicine, Div. of Applied Materials Science, Dpt. Engineering Sciences, Uppsala University, Uppsala, Sweden
- * E-mail:
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NISHIKAWA R, ANADA T, ISHIKO-UZUKA R, SUZUKI O. Osteoblastic differentiation of stromal ST-2 cells from octacalcium phosphate exposure via p38 signaling pathway. Dent Mater J 2014; 33:242-51. [DOI: 10.4012/dmj.2013-226] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Schumacher M, Lode A, Helth A, Gelinsky M. A novel strontium(II)-modified calcium phosphate bone cement stimulates human-bone-marrow-derived mesenchymal stem cell proliferation and osteogenic differentiation in vitro. Acta Biomater 2013; 9:9547-57. [PMID: 23917042 DOI: 10.1016/j.actbio.2013.07.027] [Citation(s) in RCA: 129] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2013] [Revised: 07/22/2013] [Accepted: 07/23/2013] [Indexed: 12/27/2022]
Abstract
In the present study, the in vitro effects of novel strontium-modified calcium phosphate bone cements (SrCPCs), prepared using two different approaches on human-bone-marrow-derived mesenchymal stem cells (hMSCs), were evaluated. Strontium ions, known to stimulate bone formation and therefore already used in systemic osteoporosis therapy, were incorporated into a hydroxyapatite-forming calcium phosphate bone cement via two simple approaches: incorporation of strontium carbonate crystals and substitution of Ca(2+) by Sr(2+) ions during cement setting. All modified cements released 0.03-0.07 mM Sr(2+) under in vitro conditions, concentrations that were shown not to impair the proliferation or osteogenic differentiation of hMSCs. Furthermore, strontium modification led to a reduced medium acidification and Ca(2+) depletion in comparison to the standard calcium phosphate cement. In indirect and direct cell culture experiments with the novel SrCPCs significantly enhanced cell proliferation and differentiation were observed. In conclusion, the SrCPCs described here could be beneficial for the local treatment of defects, especially in the osteoporotic bone.
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Affiliation(s)
- M Schumacher
- Centre for Translational Bone, Joint and Soft Tissue Research, Medical Faculty and University Hospital, Technische Universität Dresden, Dresden, Germany
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Calcium phosphate ceramics in bone tissue engineering: a review of properties and their influence on cell behavior. Acta Biomater 2013; 9:8037-45. [PMID: 23791671 DOI: 10.1016/j.actbio.2013.06.014] [Citation(s) in RCA: 448] [Impact Index Per Article: 40.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2013] [Revised: 05/14/2013] [Accepted: 06/11/2013] [Indexed: 12/16/2022]
Abstract
Calcium phosphate ceramics (CPCs) have been widely used as biomaterials for the regeneration of bone tissue because of their ability to induce osteoblastic differentiation in progenitor cells. Despite the progress made towards fabricating CPCs possessing a range of surface features and chemistries, the influence of material properties in orchestrating cellular events such as adhesion and differentiation is still poorly understood. Specifically, questions such as why certain CPCs may be more osteoinductive than others, and how material properties contribute to osteoinductivity/osteoconductivity remain unanswered. Therefore, this review article systematically discusses the effects of the physical (e.g. surface roughness) and chemical properties (e.g. solubility) of CPCs on protein adsorption, cell adhesion and osteoblastic differentiation in vitro. The review also provides a summary of possible signaling pathways involved in osteoblastic differentiation in the presence of CPCs. In summary, these insights on the contribution of material properties towards osteoinductivity and the role of signaling molecules involved in osteoblastic differentiation can potentially aid the design of CPC-based biomaterials that support bone regeneration without the need for additional biochemical supplements.
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