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Rosellini E, Cascone MG, Guidi L, Schubert DW, Roether JA, Boccaccini AR. Mending a broken heart by biomimetic 3D printed natural biomaterial-based cardiac patches: a review. Front Bioeng Biotechnol 2023; 11:1254739. [PMID: 38047285 PMCID: PMC10690428 DOI: 10.3389/fbioe.2023.1254739] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2023] [Accepted: 10/16/2023] [Indexed: 12/05/2023] Open
Abstract
Myocardial infarction is one of the major causes of mortality as well as morbidity around the world. Currently available treatment options face a number of drawbacks, hence cardiac tissue engineering, which aims to bioengineer functional cardiac tissue, for application in tissue repair, patient specific drug screening and disease modeling, is being explored as a viable alternative. To achieve this, an appropriate combination of cells, biomimetic scaffolds mimicking the structure and function of the native tissue, and signals, is necessary. Among scaffold fabrication techniques, three-dimensional printing, which is an additive manufacturing technique that enables to translate computer-aided designs into 3D objects, has emerged as a promising technique to develop cardiac patches with a highly defined architecture. As a further step toward the replication of complex tissues, such as cardiac tissue, more recently 3D bioprinting has emerged as a cutting-edge technology to print not only biomaterials, but also multiple cell types simultaneously. In terms of bioinks, biomaterials isolated from natural sources are advantageous, as they can provide exceptional biocompatibility and bioactivity, thus promoting desired cell responses. An ideal biomimetic cardiac patch should incorporate additional functional properties, which can be achieved by means of appropriate functionalization strategies. These are essential to replicate the native tissue, such as the release of biochemical signals, immunomodulatory properties, conductivity, enhanced vascularization and shape memory effects. The aim of the review is to present an overview of the current state of the art regarding the development of biomimetic 3D printed natural biomaterial-based cardiac patches, describing the 3D printing fabrication methods, the natural-biomaterial based bioinks, the functionalization strategies, as well as the in vitro and in vivo applications.
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Affiliation(s)
| | | | - Lorenzo Guidi
- Department of Civil and Industrial Engineering, University of Pisa, Pisa, Italy
| | - Dirk W. Schubert
- Department of Materials Science and Engineering, Institute of Polymer Materials, Friedrich-Alexander-University (FAU), Erlangen, Germany
- Bavarian Polymer Institute (BPI), Erlangen, Germany
| | - Judith A. Roether
- Department of Materials Science and Engineering, Institute of Polymer Materials, Friedrich-Alexander-University (FAU), Erlangen, Germany
| | - Aldo R. Boccaccini
- Bavarian Polymer Institute (BPI), Erlangen, Germany
- Department of Materials Science and Engineering, Institute of Biomaterials, Friedrich-Alexander-University (FAU), Erlangen, Germany
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Li W, Garmendia N, Pérez de Larraya U, Ding Y, Detsch R, Grünewald A, Roether JA, Schubert DW, Boccaccini AR. Correction: 45S5 bioactive glass-based scaffolds coated with cellulose nanowhiskers for bone tissue engineering. RSC Adv 2023; 13:13015. [PMID: 37126469 PMCID: PMC10131635 DOI: 10.1039/d3ra90041j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2023] [Accepted: 04/19/2023] [Indexed: 05/02/2023] Open
Abstract
[This corrects the article DOI: 10.1039/C4RA07740G.].
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Affiliation(s)
- Wei Li
- Institute of Biomaterials, Department of Materials Science and Engineering, University of Erlangen-Nuremberg Cauerstrasse 6 91058 Erlangen Germany +49 9131 85 28602 +49 9131 85 28601
| | - Nere Garmendia
- Cemitec, Polígono Mocholí Plaza Cein 4 31110 Noain Navarra Spain
| | | | - Yaping Ding
- Institute of Polymer Materials, Department of Materials Science and Engineering, University of Erlangen-Nuremberg Martensstrasse 7 91058 Erlangen Germany
| | - Rainer Detsch
- Institute of Biomaterials, Department of Materials Science and Engineering, University of Erlangen-Nuremberg Cauerstrasse 6 91058 Erlangen Germany +49 9131 85 28602 +49 9131 85 28601
| | - Alina Grünewald
- Institute of Biomaterials, Department of Materials Science and Engineering, University of Erlangen-Nuremberg Cauerstrasse 6 91058 Erlangen Germany +49 9131 85 28602 +49 9131 85 28601
| | - Judith A Roether
- Institute of Polymer Materials, Department of Materials Science and Engineering, University of Erlangen-Nuremberg Martensstrasse 7 91058 Erlangen Germany
| | - Dirk W Schubert
- Institute of Polymer Materials, Department of Materials Science and Engineering, University of Erlangen-Nuremberg Martensstrasse 7 91058 Erlangen Germany
| | - Aldo R Boccaccini
- Institute of Biomaterials, Department of Materials Science and Engineering, University of Erlangen-Nuremberg Cauerstrasse 6 91058 Erlangen Germany +49 9131 85 28602 +49 9131 85 28601
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Ding Y, Li W, Schubert DW, Boccaccini AR, Roether JA, Santos HA. An organic-inorganic hybrid scaffold with honeycomb-like structures enabled by one-step self-assembly-driven electrospinning. Mater Sci Eng C Mater Biol Appl 2021; 124:112079. [PMID: 33947571 DOI: 10.1016/j.msec.2021.112079] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/25/2021] [Revised: 03/21/2021] [Accepted: 03/23/2021] [Indexed: 11/18/2022]
Abstract
Electrospun organic/inorganic hybrid scaffolds have been appealing in tissue regeneration owing to the integrated physicochemical and biological performances. However, the conventional electrospun scaffolds with non-woven structures usually failed to enable deep cell infiltration due to the densely stacked layers among the fibers. Herein, through self-assembly-driven electrospinning, a polyhydroxybutyrate/poly(ε-caprolactone)/58S sol-gel bioactive glass (PHB/PCL/58S) hybrid scaffold with honeycomb-like structures was prepared by manipulating the solution composition and concentration during a one-step electrospinning process. The mechanisms enabling the formation of self-assembled honeycomb-like structures were investigated through comparative studies using Fourier-transform infrared spectroscopy (FTIR), differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA) between PHB/PCL/58S and PHB/PCL/sol-gel silica systems. The obtained honeycomb-like structure was built up from nanofibers with an average diameter of 370 nm and showed a bimodal distribution of pores: large polygonal pores up to hundreds of micrometers within the honeycomb-cells and irregular pores among the nanofibers ranging around few micrometers. The cell-materials interactions were further studied by culturing MG-63 osteoblast-like cells for 7 days. Cell viability, cell morphology and cell infiltration were comparatively investigated as well. While cells merely proliferated on the surface of non-woven structures, MG-63 cells showed extensive proliferation and deep infiltration up to 100-200 μm into the honeycomb-like structure. Moreover, the cellular spatial organization was readily regulated by the honeycomb-like pattern as well. Overall, the newly obtained hybrid scaffold may integrate the enhanced osteogenicity originating from the bioactive components, and the improved cell-material interactions brought by the honeycomb-like structure, making the new scaffold a promising candidate for tissue regeneration.
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Affiliation(s)
- Yaping Ding
- Drug Research Program, Division of Pharmaceutical Chemistry and Technology, Faculty of Pharmacy, University of Helsinki, FI-00014 Helsinki, Finland.
| | - Wei Li
- Drug Research Program, Division of Pharmaceutical Chemistry and Technology, Faculty of Pharmacy, University of Helsinki, FI-00014 Helsinki, Finland
| | - Dirk W Schubert
- Institute of Polymer Materials, University of Erlangen-Nuremberg, Martensstrasse 7, 91058 Erlangen, Germany
| | - Aldo R Boccaccini
- Institute of Biomaterials, University of Erlangen-Nuremberg, Cauerstrasse 6, 91058 Erlangen, Germany
| | - Judith A Roether
- Institute of Polymer Materials, University of Erlangen-Nuremberg, Martensstrasse 7, 91058 Erlangen, Germany.
| | - Hélder A Santos
- Drug Research Program, Division of Pharmaceutical Chemistry and Technology, Faculty of Pharmacy, University of Helsinki, FI-00014 Helsinki, Finland; Helsinki Institute of Life Science (HiLIFE), University of Helsinki, FI-00014 Helsinki, Finland.
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Taye EA, Roether JA, Schubert DW, Redda DT, Boccaccini AR. Hemp Fiber Reinforced Red Mud/Fly Ash Geopolymer Composite Materials: Effect of Fiber Content on Mechanical Strength. Materials (Basel) 2021; 14:ma14030511. [PMID: 33494326 PMCID: PMC7865735 DOI: 10.3390/ma14030511] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/29/2020] [Revised: 12/22/2020] [Accepted: 01/13/2021] [Indexed: 11/25/2022]
Abstract
Novel hemp fiber reinforced geopolymer composites were fabricated. The matrix was a new geopolymer based on a mixture of red mud and fly ash. Chopped, randomly oriented hemp fibers were used as reinforcement. The mechanical properties of the geopolymer composite, such as diametral tensile (DTS) (or Brazilian tensile) strength and compressive strength (CS), were measured. The geopolymer composites reinforced with 9 vol.% and 3 vol.% hemp fiber yielded average DTS values of 5.5 MPa and average CS values of 40 MPa. Scanning electron microscopy (SEM) studies were carried out to evaluate the microstructure and fracture surfaces of the composites. The results indicated that the addition of hemp fiber is a promising approach to improve the mechanical strength as well as to modify the failure mechanism of the geopolymer, which changed from brittle to “pseudo-ductile”.
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Affiliation(s)
- Eyerusalem A. Taye
- Department of Materials Science and Engineering, Institute of Biomaterials, University of Erlangen-Nuremberg, Cauerstrasse 6, 91058 Erlangen, Germany;
- Institute of Technology, School of Mechanical and Industrial Engineering, Addis Ababa University, Addis Ababa 7754, Ethiopia;
| | - Judith A. Roether
- Department of Materials Science and Engineering, Institute of Polymer Materials, University of Erlangen-Nuremberg, Martensstr 7, 91058 Erlangen, Germany; (J.A.R.); (D.W.S.)
| | - Dirk W. Schubert
- Department of Materials Science and Engineering, Institute of Polymer Materials, University of Erlangen-Nuremberg, Martensstr 7, 91058 Erlangen, Germany; (J.A.R.); (D.W.S.)
- Bavarian Polymer Institute, Key Lab Advanced Fiber Technology, 90762 Fürth, Germany
| | - Daniel T. Redda
- Institute of Technology, School of Mechanical and Industrial Engineering, Addis Ababa University, Addis Ababa 7754, Ethiopia;
| | - Aldo R. Boccaccini
- Department of Materials Science and Engineering, Institute of Biomaterials, University of Erlangen-Nuremberg, Cauerstrasse 6, 91058 Erlangen, Germany;
- Bavarian Polymer Institute, Key Lab Advanced Fiber Technology, 90762 Fürth, Germany
- Correspondence:
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Ciraldo FE, Arango-Ospina M, Goldmann WH, Beltrán AM, Detsch R, Gruenewald A, Roether JA, Boccaccini AR. Fabrication and characterization of Ag- and Ga-doped mesoporous glass-coated scaffolds based on natural marine sponges with improved mechanical properties. J Biomed Mater Res A 2020; 109:1309-1327. [PMID: 33085223 DOI: 10.1002/jbm.a.37123] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2020] [Revised: 10/12/2020] [Accepted: 10/16/2020] [Indexed: 11/11/2022]
Abstract
Natural marine sponges were used as sacrificial template for the fabrication of bioactive glass-based scaffolds. After sintering at 1050°C, the resulting samples were additionally coated with a silicate solution containing biologically active ions (Ag and Ga), well-known for their antibacterial properties. The produced scaffolds were characterized by superior mechanical properties (maximum compressive strength of 4 MPa) and total porosity of ~80% in comparison to standard scaffolds made by using PU foam templates. Direct cell culture tests performed on the uncoated and coated samples showed positive results in terms of adhesion, proliferation, and differentiation of MC3T3-E1 cells. Moreover, vascular endothelial growth factor (VEGF) secretion from cells in contact with scaffold dissolution products was measured after 7 and 10 days of incubation, showing promising angiogenic results for bone tissue engineering applications. The antibacterial potential of the produced samples was assessed by performing agar diffusion tests against both Gram-positive and Gram-negative bacteria.
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Affiliation(s)
- Francesca E Ciraldo
- Institute of Biomaterials, Department of Materials Science and Engineering, University of Erlangen-Nuremberg, Erlangen, Germany
| | - Marcela Arango-Ospina
- Institute of Biomaterials, Department of Materials Science and Engineering, University of Erlangen-Nuremberg, Erlangen, Germany
| | - Wolfgang H Goldmann
- Institute of Biophysics, Department of Physics, University of Erlangen-Nuremberg, Erlangen, Germany
| | - Ana M Beltrán
- Department of Materials Science and Engineering. Escuela Politécnica Superior, Universidad de Sevilla, Seville, Spain
| | - Rainer Detsch
- Institute of Biomaterials, Department of Materials Science and Engineering, University of Erlangen-Nuremberg, Erlangen, Germany
| | - Alina Gruenewald
- Institute of Biomaterials, Department of Materials Science and Engineering, University of Erlangen-Nuremberg, Erlangen, Germany
| | - J A Roether
- Institute of Polymer Materials, Department of Materials Science and Engineering, University of Erlangen-Nuremberg, Erlangen, Germany
| | - Aldo R Boccaccini
- Institute of Biomaterials, Department of Materials Science and Engineering, University of Erlangen-Nuremberg, Erlangen, Germany
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Schuhladen K, Roether JA, Boccaccini AR. Bioactive glasses meet phytotherapeutics: The potential of natural herbal medicines to extend the functionality of bioactive glasses. Biomaterials 2019; 217:119288. [DOI: 10.1016/j.biomaterials.2019.119288] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2019] [Revised: 06/12/2019] [Accepted: 06/15/2019] [Indexed: 12/13/2022]
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Ayala Valderrama DM, Gómez Cuaspud JA, Roether JA, Boccaccini AR. Development and Characterization of Glass-Ceramics from Combinations of Slag, Fly Ash, and Glass Cullet without Adding Nucleating Agents. Materials (Basel) 2019; 12:ma12122032. [PMID: 31242565 PMCID: PMC6631603 DOI: 10.3390/ma12122032] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/09/2019] [Revised: 06/17/2019] [Accepted: 06/21/2019] [Indexed: 11/16/2022]
Abstract
Developments in the field of materials science are contributing to providing solutions for the recycling of industrial residues to develop new materials. Such approaches generate new products and provide optimal alternatives to the final disposal of different types of industrial wastes. This research focused on identifying and characterizing slag, fly ash, and glass cullet from the Boyacá region in Colombia as raw materials for producing glass-ceramics, with the innovative aspect of the use of these three residues without the addition of nucleating agents to produce the glass-ceramics. To characterize the starting materials, X-ray diffraction (XRD), X-ray fluorescence (XRF), and Scanning Electron Microscopy (SEM) techniques were used. The results were used to evaluate the best conditions to produce mixtures of the three waste components and to determine the specific compositions of glass-ceramics to achieve products with attractive technical properties for potential industrial applications. The proposed mixtures were based on three compositions: Mixture 1, 2, and 3. The materials were obtained through thermal treatment at 1200 °C in a tubular furnace in accordance with the results of a comprehensive characterization using thermal analysis. The microstructure, thermal stability, and structural characteristics of the samples were examined through SEM, differential thermal analysis (DTA), and XRD analyses, which showed that the main crystalline phases were diopside and anorthite, with a small amount of enstatite and gehlenite. The obtained glass-ceramics showed properties of technical significance for structural applications.
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Affiliation(s)
- Diana M Ayala Valderrama
- Grupo de Física de Materiales, Universidad Pedagógica y Tecnológica de Colombia. Av Central del Norte 39-115, 150003 Tunja, Boyacá, Colombia.
- Institute of Biomaterials, Department of Materials Science and Engineering, University of Erlangen-Nuremberg, 91058 Erlangen, Germany.
| | - Jairo A Gómez Cuaspud
- Grupo de Física de Materiales, Universidad Pedagógica y Tecnológica de Colombia. Av Central del Norte 39-115, 150003 Tunja, Boyacá, Colombia.
| | - Judith A Roether
- Institute of Polymer Materials, Department of Materials Science and Engineering, University of Erlangen-Nuremberg, 91058 Erlangen, Germany.
| | - Aldo R Boccaccini
- Institute of Biomaterials, Department of Materials Science and Engineering, University of Erlangen-Nuremberg, 91058 Erlangen, Germany.
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Reiter T, Panick T, Schuhladen K, Roether JA, Hum J, Boccaccini AR. Bioactive glass based scaffolds coated with gelatin for the sustained release of icariin. Bioact Mater 2018; 4:1-7. [PMID: 30505983 PMCID: PMC6250853 DOI: 10.1016/j.bioactmat.2018.10.001] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2018] [Revised: 10/24/2018] [Accepted: 10/29/2018] [Indexed: 01/21/2023] Open
Abstract
Gelatin-coated, 3D sponge-like scaffolds based on 45S5 bioactive glass were produced using the foam replication technique. Compressive strength tests of gelatin-coated samples compared to uncoated scaffolds showed significant strengthening and toughening effects of the gelatin coating with compressive strength values in the range of cortical bone. Additionally, the crosslinked gelatin network (using either caffeic acid or N-(3-Dimethylaminopropyl)-N′-ethylcarbodiimide hydrochloride (EDC)/N-hxdroxysuccinimide (NHS) as crosslinking agent) was shown to be a suitable candidate for the sustained release of the bioactive molecule icariin. Concerning bioactivity of the produced scaffolds, characterization by FTIR and SEM indicated the formation of hydroxyapatite (HA) in all samples after immersion in simulated body fluid (SBF) for 14 days, highlighting the favorable combination of mechanical robustness, bioactivity and drug delivery capability of this new type of scaffolds. Foam like bioactive glass scaffolds produced by replication technique. Gelatin coatings confer increased compression strength to scaffolds. Crosslinked gelatin coating is suitable candidate for the sustained release of icariin. Favorable combination of bioactivity, gelatin coating and icariin release demonstrated.
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El-Rashidy AA, Waly G, Gad A, Roether JA, Hum J, Yang Y, Detsch R, Hashem AA, Sami I, Goldmann WH, Boccaccini AR. Antibacterial activity and biocompatibility of zein scaffolds containing silver-doped bioactive glass. Biomed Mater 2018; 13:065006. [DOI: 10.1088/1748-605x/aad8cf] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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Ding Y, Li W, Correia A, Yang Y, Zheng K, Liu D, Schubert DW, Boccaccini AR, Santos HA, Roether JA. Electrospun Polyhydroxybutyrate/Poly(ε-caprolactone)/Sol-Gel-Derived Silica Hybrid Scaffolds with Drug Releasing Function for Bone Tissue Engineering Applications. ACS Appl Mater Interfaces 2018; 10:14540-14548. [PMID: 29624366 PMCID: PMC6108537 DOI: 10.1021/acsami.8b02656] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/12/2018] [Accepted: 04/06/2018] [Indexed: 05/23/2023]
Abstract
Electrospun hybrid scaffolds are an effective platform to deliver drugs site specifically for the prevention and treatment of diseases in addition to promote tissue regeneration because of the flexibility to load drugs therein. In the present study, electrospun hybrid scaffolds containing antibiotics were developed to support cellular activities and eliminate potential postoperative inflammation and infection. As a model drug, levofloxacin (LFX) was successfully incorporated into pure polyhydroxybutyrate/poly(ε-caprolactone) (PHB/PCL) scaffolds and PHB/PCL/sol-gel-derived silica (SGS) scaffolds. The influence of LFX on the morphology, mechanical performance, chemical structure, drug release profile, and antibacterial effect of the scaffolds was thoroughly and comparatively investigated. MG-63 osteoblast-like cell cultivation on both scaffolds certified that LFX inclusion did not impair the biocompatibility. In addition to the favorable cellular proliferation and differentiation, scaffolds containing both LFX and SGS displayed highly increased mineralization content. Therefore, the present multifunctional hybrid scaffolds are promising in tissue engineering applications.
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Affiliation(s)
- Yaping Ding
- Drug
Research Program, Division of Pharmaceutical Chemistry and Technology,
Faculty of Pharmacy, and Helsinki Institute of Life Science (HiLIFE), University of Helsinki, FI-00014 Helsinki, Finland
- Institute of Polymer Materials, University of Erlangen−Nuremberg, Martensstrasse 7, 91058 Erlangen, Germany
| | - Wei Li
- Drug
Research Program, Division of Pharmaceutical Chemistry and Technology,
Faculty of Pharmacy, and Helsinki Institute of Life Science (HiLIFE), University of Helsinki, FI-00014 Helsinki, Finland
| | - Alexandra Correia
- Drug
Research Program, Division of Pharmaceutical Chemistry and Technology,
Faculty of Pharmacy, and Helsinki Institute of Life Science (HiLIFE), University of Helsinki, FI-00014 Helsinki, Finland
| | - Yuyun Yang
- Institute of Biomaterials, University of
Erlangen−Nuremberg, Cauerstrasse 6, 91058 Erlangen, Germany
- Institute of Corrosion
Science and Surface Technology, Harbin Engineering
University, Nantong Street 145, 150001 Harbin, China
| | - Kai Zheng
- Institute of Biomaterials, University of
Erlangen−Nuremberg, Cauerstrasse 6, 91058 Erlangen, Germany
| | - Dongfei Liu
- Drug
Research Program, Division of Pharmaceutical Chemistry and Technology,
Faculty of Pharmacy, and Helsinki Institute of Life Science (HiLIFE), University of Helsinki, FI-00014 Helsinki, Finland
| | - Dirk W. Schubert
- Institute of Polymer Materials, University of Erlangen−Nuremberg, Martensstrasse 7, 91058 Erlangen, Germany
| | - Aldo R. Boccaccini
- Institute of Biomaterials, University of
Erlangen−Nuremberg, Cauerstrasse 6, 91058 Erlangen, Germany
| | - Hélder A. Santos
- Drug
Research Program, Division of Pharmaceutical Chemistry and Technology,
Faculty of Pharmacy, and Helsinki Institute of Life Science (HiLIFE), University of Helsinki, FI-00014 Helsinki, Finland
| | - Judith A. Roether
- Institute of Polymer Materials, University of Erlangen−Nuremberg, Martensstrasse 7, 91058 Erlangen, Germany
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Silva R, Singh R, Sarker B, Papageorgiou DG, Juhasz-Bortuzzo JA, Roether JA, Cicha I, Kaschta J, Schubert DW, Chrissafis K, Detsch R, Boccaccini AR. Hydrogel matrices based on elastin and alginate for tissue engineering applications. Int J Biol Macromol 2018; 114:614-625. [PMID: 29572141 DOI: 10.1016/j.ijbiomac.2018.03.091] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2017] [Revised: 02/21/2018] [Accepted: 03/19/2018] [Indexed: 10/17/2022]
Abstract
Hydrogels from natural polymers are widely used in tissue engineering due to their unique properties, especially when regarding the cell environment and their morphological similarity to the extracellular matrix (ECM) of native tissues. In this study, we describe the production and characterization of novel hybrid hydrogels composed of alginate blended with elastin from bovine neck ligament. The properties of elastin as a component of the native ECM were combined with the excellent chemical and mechanical stability as well as biocompatibility of alginate to produce two hybrid hydrogels geometries, namely 2D films obtained using sonication treatment and 3D microcapsules produced by pressure-driven extrusion. The resulting blend hydrogels were submitted to an extensive physico-chemical characterization. Furthermore, the biological compatibility of these materials was assessed using normal human dermal fibroblasts, indicating the suitability of this blend for soft tissue engineering.
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Affiliation(s)
- Raquel Silva
- Institute of Briomaterials, Department of Materials Science and Engineering, University of Erlangen-Nuremberg, 91058 Erlangen, Germany.
| | - Raminder Singh
- Cardiovascular Nanomedicine Unit, Section of Experimental Oncology and Nanomedicine, ENT Department, University Hospital Erlangen, 91054 Erlangen, Germany; Laboratory of Molecular Cardiology, Medical Clinic 2, University Hospital Erlangen, 91054 Erlangen, Germany
| | - Bapi Sarker
- Institute of Briomaterials, Department of Materials Science and Engineering, University of Erlangen-Nuremberg, 91058 Erlangen, Germany
| | - Dimitrios G Papageorgiou
- Solid State Physics Section, Physics Department, Aristotle University of Thessaloniki, 541 24 Thessaloniki, Greece; School of Materials and National Graphene Institute, University of Manchester, Oxford Road, M13 9PL Manchester, United Kingdom
| | - Judith A Juhasz-Bortuzzo
- Institute of Briomaterials, Department of Materials Science and Engineering, University of Erlangen-Nuremberg, 91058 Erlangen, Germany
| | - Judith A Roether
- Institute for Polymer Materials, Department of Materials Science and Engineering, University of Erlangen-Nuremberg, 91058 Erlangen, Germany
| | - Iwona Cicha
- Cardiovascular Nanomedicine Unit, Section of Experimental Oncology and Nanomedicine, ENT Department, University Hospital Erlangen, 91054 Erlangen, Germany
| | - Joachim Kaschta
- Institute for Polymer Materials, Department of Materials Science and Engineering, University of Erlangen-Nuremberg, 91058 Erlangen, Germany
| | - Dirk W Schubert
- Institute for Polymer Materials, Department of Materials Science and Engineering, University of Erlangen-Nuremberg, 91058 Erlangen, Germany
| | - Konstantinos Chrissafis
- Solid State Physics Section, Physics Department, Aristotle University of Thessaloniki, 541 24 Thessaloniki, Greece
| | - Rainer Detsch
- Institute of Briomaterials, Department of Materials Science and Engineering, University of Erlangen-Nuremberg, 91058 Erlangen, Germany
| | - Aldo R Boccaccini
- Institute of Briomaterials, Department of Materials Science and Engineering, University of Erlangen-Nuremberg, 91058 Erlangen, Germany.
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Yang Y, Zheng K, Liang R, Mainka A, Taccardi N, Roether JA, Detsch R, Goldmann WH, Virtanen S, Boccaccini AR. Cu-releasing bioactive glass/polycaprolactone coating on Mg with antibacterial and anticorrosive properties for bone tissue engineering. ACTA ACUST UNITED AC 2017; 13:015001. [PMID: 29072194 DOI: 10.1088/1748-605x/aa87f2] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Bioactive glass nanoparticles containing copper (Cu-BGNs) were introduced into polycaprolactone (PCL) coating systems to improve the bioactivity, antibacterial properties, and corrosion resistance of vulnerable magnesium matrices under physiological conditions. The influence of different amounts of Cu-BGNs in PCL coatings was thoroughly investigated in determining the wettability, electrochemical properties, and antibacterial effects against Staphylococcus carnosus and Escherichia coli, as well as their cyto-compatibility. Cu-BGNs were observed randomly scattered in PCL coatings. Increasing the concentration of Cu-BGNs resulted in a slight decrease of the water contact angle, and a reduction in anticorrosion properties of the Cu-BGN composite coatings. Yet higher Cu-BGN content in coatings led to more calcium phosphate formation on the surface after 7 days of immersion in Dulbecco's modified Eagle's medium, which was confirmed by Fourier-transform infrared spectroscopy and x-ray photoelectron spectroscopy. The growth of S. carnosus and E. coli was inhibited by Cu2+ ions released from the Cu-BGN coatings. In addition, both direct and indirect cyto-compatibility experiments showed that the viability and proliferation of MG-63 cells on Cu-BGN coatings were highly increased compared to pure magnesium; however, an additional increase of Cu-BGN concentration showed a slight decrease of cell proliferation and cell activity. In summary, Cu-BGN/PCL composite coatings impart magnesium-based biomaterials with antibacterial and anticorrosive properties for clinical applications.
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Affiliation(s)
- Yuyun Yang
- Institute of Biomaterials, Department of Materials Science and Engineering, University of Erlangen-Nuremberg, Erlangen, Germany. Institute for Surface Science and Corrosion, Department of Materials Science and Engineering, University of Erlangen-Nuremberg, Erlangen, Germany
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El-Rashidy AA, Roether JA, Harhaus L, Kneser U, Boccaccini AR. Regenerating bone with bioactive glass scaffolds: A review of in vivo studies in bone defect models. Acta Biomater 2017; 62:1-28. [PMID: 28844964 DOI: 10.1016/j.actbio.2017.08.030] [Citation(s) in RCA: 303] [Impact Index Per Article: 43.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2017] [Revised: 08/16/2017] [Accepted: 08/23/2017] [Indexed: 12/19/2022]
Abstract
Large bone defects resulting from fractures and disease are a medical concern, being often unable to heal spontaneously by the body's repair mechanisms. Bone tissue engineering (BTE) is a promising approach for treating bone defects through providing a template to guide osseous regeneration. 3D scaffolds with microstructure mimicking host bone are necessary in common BTE strategies. Bioactive glasses (BGs) attract researchers' attention as BTE scaffolds as they are osteoconductive and osteoinductive in certain formulations. In vivo animal models allow understanding and evaluation of materials' performance in the complex physiological environment, being an inevitable step before clinical trials. The aim of this paper is to review for the first time published research investigating the in vivo osseous regenerative capacity of 3D BG scaffolds in bone defect animal models, to better understand and evaluate the progress and future outlook of the use of such scaffolds in BTE. The literature analysis reveals that the regenerative capacity of BG scaffolds depends on several factors; including BG composition, fabrication method, scaffold microstructure and pore characteristics, in addition to scaffold pretreatment and whether or not the scaffolds are loaded with growth factors. In addition, animal species selected, defect size and implantation time affect the scaffold in vivo behavior and outcomes. The review of the literature also makes clear the difficulty encountered to compare different types of bioactive glass scaffolds in their bone forming ability. Even considering such limitations of the current state-of-the-art, results generated from animal bone defect models provide an essential source of information to guide the design of BG scaffolds in future. STATEMENT OF SIGNIFICANCE Bioactive glasses are at the centre of increasing research efforts in bone tissue engineering as the number of research groups around the world carrying out research on this type of biomaterials continues to increase. However, there are no previous reviews in literature which specifically cover investigations of the performance of bioactive glass scaffolds in bone defect animal models. This is the topic of the present review, in which we have analysed comprehensively all available literature in the field. The review thus fills a gap in the biomaterials literature providing a broad platform of information for researchers interested in bioactive glasses in general and specifically in the outcomes of in vivo models. Bioactive glass scaffolds of different compositions tested in relevant bone defect models are covered.
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Affiliation(s)
- Aiah A El-Rashidy
- Department of Biomaterials, Faculty of Oral and Dental Medicine, Cairo University, 11562 Cairo, Egypt
| | - Judith A Roether
- Institute of Polymer Materials, University of Erlangen-Nuremberg, 91058 Erlangen, Germany
| | - Leila Harhaus
- Department of Hand, Plastic and Reconstructive Surgery - Burn Center - BG Trauma Center Ludwigshafen, Plastic and Hand Surgery, University of Heidelberg, Ludwigshafen, Germany
| | - Ulrich Kneser
- Department of Hand, Plastic and Reconstructive Surgery - Burn Center - BG Trauma Center Ludwigshafen, Plastic and Hand Surgery, University of Heidelberg, Ludwigshafen, Germany
| | - Aldo R Boccaccini
- Institute of Biomaterials, University of Erlangen-Nuremberg, 91058 Erlangen, Germany.
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Macías-Andrés VI, Li W, Aguilar-Reyes EA, Ding Y, Roether JA, Harhaus L, León-Patiño CA, Boccaccini AR. Preparation and characterization of 45S5 bioactive glass-based scaffolds loaded with PHBV microspheres with daidzein release function. J Biomed Mater Res A 2017; 105:1765-1774. [PMID: 28241393 DOI: 10.1002/jbm.a.36046] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2016] [Revised: 02/17/2017] [Accepted: 02/22/2017] [Indexed: 12/21/2022]
Abstract
Poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) microsphere loaded 45S5 bioactive glass (BG) based scaffolds with drug releasing capability have been developed. PHBV microspheres with a mean particle size 4 ± 2 μm loaded with daidzein were obtained by oil-in-water single emulsion solvent evaporation method and applied to the surface of BG scaffolds by dip coating technique. The morphology, in vitro bioactivity in simulated body fluid (SBF), mechanical properties and drug release kinetics of microsphere loaded scaffolds were studied. The microspheres were shown to be homogeneously dispersed on the scaffold surfaces. It was confirmed that hydroxyapatite crystals homogeneously grew not only on the surface of the scaffold but also on the surface of the microspheres within 3 days of immersion in SBF. The daidzein release from the microsphere loaded scaffolds lasted almost 1 month and was determined to be diffusion controlled. The microsphere loaded BG scaffolds with daidzein releasing capability obtained in this study are a candidate for bone tissue engineering. © 2017 Wiley Periodicals, Inc. J Biomed Mater Res Part A: 105A: 1765-1774, 2017.
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Affiliation(s)
- Víctor I Macías-Andrés
- Instituto de Investigación en Metalúrgia y Materiales, Universidad Michoacana de San Nicolás de Hidalgo, Morelia, 58030, México
| | - Wei Li
- Department of Materials Science and Engineering, University of Erlangen-Nuremberg, Institute of Biomaterials, Erlangen, 91058, Germany
| | - Ena A Aguilar-Reyes
- Instituto de Investigación en Metalúrgia y Materiales, Universidad Michoacana de San Nicolás de Hidalgo, Morelia, 58030, México
| | - Yaping Ding
- Department of Materials Science and Engineering, University of Erlangen-Nuremberg, Institute of Polymer Materials, Erlangen, 91058, Germany
| | - Judith A Roether
- Department of Materials Science and Engineering, University of Erlangen-Nuremberg, Institute of Polymer Materials, Erlangen, 91058, Germany
| | - Leila Harhaus
- Department of Hand-, Plastic and Reconstructive Surgery, Burn Center, Department of Hand- and Plastic Surgery of Heidelberg University, BG Trauma Center Ludwigshafen, Germany.,Department of Plastic Surgery of Heidelberg University, BG Trauma Center Ludwigshafen, Ludwigshafen, 67071, Germany
| | - Carlos A León-Patiño
- Instituto de Investigación en Metalúrgia y Materiales, Universidad Michoacana de San Nicolás de Hidalgo, Morelia, 58030, México
| | - Aldo R Boccaccini
- Department of Materials Science and Engineering, University of Erlangen-Nuremberg, Institute of Biomaterials, Erlangen, 91058, Germany
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Rai R, Roether JA, Knowles JC, Mordan N, Salih V, Locke IC, Gordge MP, McCormick A, Mohn D, Stark WJ, Keshavarz T, Boccaccini AR, Roy I. Highly elastomeric poly(3-hydroxyoctanoate) based natural polymer composite for enhanced keratinocyte regeneration. INT J POLYM MATER PO 2017. [DOI: 10.1080/00914037.2016.1217530] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Ranjana Rai
- Department of Life Sciences, Faculty of Science and Technology, University of Westminster, London, United Kingdom
| | - Judith A. Roether
- Department of Materials Science and Engineering, University of Erlangen – Nuremberg, Erlangen, Germany
| | - Jonathan C. Knowles
- Division of Biomaterials and Tissue Engineering, UCL Eastman Dental Institute, University College London, London, United Kingdom
- WCU Research Centre of Nanobiomedical Science, Dankook University, Chungnam, South Korea
| | - Nicola Mordan
- Division of Biomaterials and Tissue Engineering, UCL Eastman Dental Institute, University College London, London, United Kingdom
| | - Vehid Salih
- Division of Biomaterials and Tissue Engineering, UCL Eastman Dental Institute, University College London, London, United Kingdom
| | - Ian C. Locke
- Department of Biomedical Sciences, Faculty of Science and Technology, University of Westminster, London, United Kingdom
| | - Michael P. Gordge
- Department of Biomedical Sciences, Faculty of Science and Technology, University of Westminster, London, United Kingdom
| | - Aine McCormick
- Hemophilia Reference Centre, St. Thomas’ Hospital, London, United Kingdom
| | - Dirk Mohn
- Institute for Chemical and Bioengineering, Department of Chemistry and Applied Biosciences, ETH Zurich, Zurich, Switzerland
- Department of Preventive Dentistry, Periodontology, and Cardiology, University of Zurich Center of Dental Medicine, Zurich, Switzerland
| | - Wendelin J. Stark
- Institute for Chemical and Bioengineering, Department of Chemistry and Applied Biosciences, ETH Zurich, Zurich, Switzerland
| | - Tajalli Keshavarz
- Department of Life Sciences, Faculty of Science and Technology, University of Westminster, London, United Kingdom
| | - Aldo R. Boccaccini
- Department of Materials Science and Engineering, University of Erlangen – Nuremberg, Erlangen, Germany
| | - Ipsita Roy
- Department of Life Sciences, Faculty of Science and Technology, University of Westminster, London, United Kingdom
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Ding Y, Li W, Müller T, Schubert DW, Boccaccini AR, Yao Q, Roether JA. Electrospun Polyhydroxybutyrate/Poly(ε-caprolactone)/58S Sol-Gel Bioactive Glass Hybrid Scaffolds with Highly Improved Osteogenic Potential for Bone Tissue Engineering. ACS Appl Mater Interfaces 2016; 8:17098-17108. [PMID: 27295496 DOI: 10.1021/acsami.6b03997] [Citation(s) in RCA: 68] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Electrospinning of biopolymer and inorganic substances is one of the efficient ways to combine various advantageous properties in one single fibrous structure with potential for tissue engineering applications. In the present study, to integrate the high stiffness of polyhydroxybutyrate (PHB), the flexibility of poly(ε-caprolactone) (PCL) and the bioactivity of 58S bioactive glass, PHB/PCL/58S sol-gel bioactive glass hybrid scaffolds were fabricated using combined electrospinning and sol-gel method. Physical features such as fiber diameter distribution, mechanical strength and Young's modulus were characterized thoroughly. FTIR analysis demonstrated the successful incorporation of 58S bioactive glass into the blend polymers, which greatly improved the hydrophilicity of PHB/PCL fibermats. The primary biological response of MG-63 osteoblast-like cells on the prepared fibrous scaffolds was evaluated, proving that the 58S glass sol containing hybrid scaffold were not only favorable to MG-63 cell adhesion but also slightly enhanced cell viability and significantly increased alkaline phosphate activity .
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Affiliation(s)
- Yaping Ding
- Institute of Polymer Materials, University of Erlangen-Nuremberg , Martensstrasse 7, 91058 Erlangen, Germany
| | - Wei Li
- Institute of Biomaterials, University of Erlangen-Nuremberg , Cauerstrasse 6, 91058 Erlangen, Germany
| | - Teresa Müller
- Institute of Polymer Materials, University of Erlangen-Nuremberg , Martensstrasse 7, 91058 Erlangen, Germany
| | - Dirk W Schubert
- Institute of Polymer Materials, University of Erlangen-Nuremberg , Martensstrasse 7, 91058 Erlangen, Germany
| | - Aldo R Boccaccini
- Institute of Biomaterials, University of Erlangen-Nuremberg , Cauerstrasse 6, 91058 Erlangen, Germany
| | - Qingqing Yao
- Institute of Advanced Materials for Nano-Bio Applications, Wenzhou Medical University , 270 Xueyuan Xi Road, Wenzhou, Zhejiang 325027, China
| | - Judith A Roether
- Institute of Polymer Materials, University of Erlangen-Nuremberg , Martensstrasse 7, 91058 Erlangen, Germany
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Ding Y, Yao Q, Li W, Schubert DW, Boccaccini AR, Roether JA. The evaluation of physical properties and in vitro cell behavior of PHB/PCL/sol–gel derived silica hybrid scaffolds and PHB/PCL/fumed silica composite scaffolds. Colloids Surf B Biointerfaces 2015; 136:93-8. [DOI: 10.1016/j.colsurfb.2015.08.023] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2015] [Revised: 08/15/2015] [Accepted: 08/18/2015] [Indexed: 10/23/2022]
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Rai R, Tallawi M, Frati C, Falco A, Gervasi A, Quaini F, Roether JA, Hochburger T, Schubert DW, Seik L, Barbani N, Lazzeri L, Rosellini E, Boccaccini AR. Bioactive electrospun fibers of poly(glycerol sebacate) and poly(ε-caprolactone) for cardiac patch application. Adv Healthc Mater 2015; 4:2012-25. [PMID: 26270628 DOI: 10.1002/adhm.201500154] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2015] [Revised: 05/31/2015] [Indexed: 12/21/2022]
Abstract
Scaffolds for cardiac patch application must meet stringent requirements such as biocompatibility, biodegradability, and facilitate vascularization in the engineered tissue. Here, a bioactive, biocompatible, and biodegradable electrospun scaffold of poly(glycerol sebacate)-poly(ε-caprolactone) (PGS-PCL) is proposed as a potential scaffold for cardiac patch application. The fibers are smooth bead free with average diameter = 0.8 ± 0.3 μm, mean pore size = 2.2 ± 1.2 μm, porosity = 62 ± 4%, and permeability higher than that of control biological tissue. For the first time, bioactive PGS-PCL fibers functionalized with vascular endothelial growth factor (VEGF) are developed, the approach used being chemical modification of the PGS-PCL fibers followed by subsequent binding of VEGF via amide bonding. The approach results in uniform immobilization of VEGF on the fibers; the concentrations are 1.0 μg cm(-2) for the PGS-PCL (H) and 0.60 μg cm(-2) for the PGS-PCL (L) samples. The bioactive scaffold supports the attachment and growth of seeded myogenic and vasculogenic cell lines. In fact, rat aortic endothelial cells also display angiogenic features indicating potential for the formation of vascular tree in the scaffold. These results therefore demonstrate the prospects of VEGF-functionalized PGS-PCL fibrous scaffold as promising matrix for cardiac patch application.
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Affiliation(s)
- Ranjana Rai
- Institute of Biomaterials Department of Materials Science and Engineering; University of Erlangen-Nuremberg; 91058 Erlangen Germany
| | - Marwa Tallawi
- Institute of Biomaterials Department of Materials Science and Engineering; University of Erlangen-Nuremberg; 91058 Erlangen Germany
| | - Caterina Frati
- Department of Medicine and Pathology; University of Parma; 12-I 43126 Parma Italy
| | - Angela Falco
- Department of Medicine and Pathology; University of Parma; 12-I 43126 Parma Italy
| | - Andrea Gervasi
- Department of Medicine and Pathology; University of Parma; 12-I 43126 Parma Italy
| | - Federico Quaini
- Department of Medicine and Pathology; University of Parma; 12-I 43126 Parma Italy
| | - Judith A. Roether
- Institute of Polymeric Materials; Department of Materials Science and Engineering; University of Erlangen-Nuremberg; 91058 Erlangen Germany
| | - Tobias Hochburger
- Institute of Polymeric Materials; Department of Materials Science and Engineering; University of Erlangen-Nuremberg; 91058 Erlangen Germany
| | - Dirk W. Schubert
- Institute of Polymeric Materials; Department of Materials Science and Engineering; University of Erlangen-Nuremberg; 91058 Erlangen Germany
| | - Lothar Seik
- Ibt - Immunological and Biochemical Testsystems GmbH Wiesenstr. 17; 88521 Binzwangen Germany
| | - Niccoletta Barbani
- Department of Civil and Industrial Engineering; Largo Lucio Lazzarino; 56126 Pisa Italy
| | - Luigi Lazzeri
- Department of Civil and Industrial Engineering; Largo Lucio Lazzarino; 56126 Pisa Italy
| | - Elisabetta Rosellini
- Department of Civil and Industrial Engineering; Largo Lucio Lazzarino; 56126 Pisa Italy
| | - Aldo R. Boccaccini
- Institute of Biomaterials Department of Materials Science and Engineering; University of Erlangen-Nuremberg; 91058 Erlangen Germany
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Tallawi M, Zebrowski DC, Rai R, Roether JA, Schubert DW, El Fray M, Engel FB, Aifantis KE, Boccaccini AR. Poly(Glycerol Sebacate)/Poly(Butylene Succinate-Butylene Dilinoleate) Fibrous Scaffolds for Cardiac Tissue Engineering. Tissue Eng Part C Methods 2015; 21:585-96. [DOI: 10.1089/ten.tec.2014.0445] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Affiliation(s)
- Marwa Tallawi
- Department of Materials Science and Engineering, Institute of Biomaterials, University of Erlangen-Nürnberg, Erlangen, Germany
| | - David C. Zebrowski
- Experimental Renal and Cardiovascular Research, Department of Nephropathology, Institute of Pathology, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Erlangen, Germany
| | - Ranjana Rai
- Department of Materials Science and Engineering, Institute of Biomaterials, University of Erlangen-Nürnberg, Erlangen, Germany
| | - Judith A. Roether
- Department of Materials Science and Engineering, Institute of Polymeric Materials, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Erlangen, Germany
| | - Dirk W. Schubert
- Department of Materials Science and Engineering, Institute of Polymeric Materials, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Erlangen, Germany
| | - Miroslawa El Fray
- Division of Biomaterials and Microbiological Technologies, Polymer Institute, West Pomeranian University of Technology, Szczecin, Poland
| | - Felix B. Engel
- Experimental Renal and Cardiovascular Research, Department of Nephropathology, Institute of Pathology, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Erlangen, Germany
| | - Katerina E. Aifantis
- Laboratory of Mechanics and Materials, School of Engineering, Aristotle University of Thessaloniki, Thessaloniki, Greece
- Department of Civil Engineering-Engineering Mechanics, University of Arizona, Tucson, Arizona
| | - Aldo R. Boccaccini
- Department of Materials Science and Engineering, Institute of Biomaterials, University of Erlangen-Nürnberg, Erlangen, Germany
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Huang Z, Nooeaid P, Kohl B, Roether JA, Schubert DW, Meier C, Boccaccini AR, Godkin O, Ertel W, Arens S, Schulze-Tanzil G. Chondrogenesis of human bone marrow mesenchymal stromal cells in highly porous alginate-foams supplemented with chondroitin sulfate. Materials Science and Engineering: C 2015; 50:160-72. [DOI: 10.1016/j.msec.2015.01.082] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/11/2014] [Revised: 11/15/2014] [Accepted: 01/24/2015] [Indexed: 01/14/2023]
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Greco KV, Francis L, Somasundaram M, Greco G, English NR, Roether JA, Boccaccini AR, Sibbons P, Ansari T. Characterisation of porcine dermis scaffolds decellularised using a novel non-enzymatic method for biomedical applications. J Biomater Appl 2015; 30:239-53. [PMID: 25855682 DOI: 10.1177/0885328215578638] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Off-the-shelf availability of tissue-engineered skin constructs, tailored by different combinations of reagents to produce a highly preserved biological matrix is often the only means to help patients suffering skin damage. This study assessed the effect of five different decellularisation methods on porcine dermal scaffolds with regard to matrix composition, biomechanical strength, and cytotoxicity using an in vitro biocompatibility assay. Results demonstrated that four out of the five tested decellularisation protocols were efficient in producing acellular scaffolds. Nevertheless, decellularisation method using osmotic shock without enzymatic digestion showed to be efficient not only in removing cellular material and debris from dermal scaffolds but was also beneficial in the preservation of extracellular matrix components (glycosaminoglycans and collagen). Histological assessment revealed that the dermal architecture of coarse collagen bundles was preserved. Examinations by scanning electron microscopy and transmission electron microscopy showed that the arrangement and ultrastructure of collagen fibrils in the scaffolds were retained following non-enzymatic method of decellularisation and also after collagen crosslinking using genipin. Moreover, this decellularised scaffold was not only shown to be biologically compatible when co-cultured with bone marrow-derived mesenchymal stem cells and fibroblasts, but also stimulated the cells to release trophic factors essential for tissue regeneration.
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Affiliation(s)
- K V Greco
- Department of Surgical Research, NPIMR, Harrow, UK
| | - L Francis
- Department of Surgical Research, NPIMR, Harrow, UK
| | - M Somasundaram
- Department of Surgical Research, NPIMR, Harrow, UK Nuffield Department of Surgery, John Radcliffe Hospital Headington, University of Oxford, UK
| | - G Greco
- Department of Surgical Research, NPIMR, Harrow, UK
| | - Nicholas R English
- Antigen Presentation Research Group, Imperial College London/NPIMR, Harrow, UK
| | - Judith A Roether
- Institute of Polymer Materials, University of Erlangen-Nuremberg, Erlangen, Germany
| | - Aldo R Boccaccini
- Institute of Biomaterials, University of Erlangen-Nuremberg, Erlangen, Germany
| | - P Sibbons
- Department of Surgical Research, NPIMR, Harrow, UK
| | - T Ansari
- Department of Surgical Research, NPIMR, Harrow, UK
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Fiedler T, Belova IV, Murch GE, Poologasundarampillai G, Jones JR, Roether JA, Boccaccini AR. A comparative study of oxygen diffusion in tissue engineering scaffolds. J Mater Sci Mater Med 2014; 25:2573-2578. [PMID: 25016936 DOI: 10.1007/s10856-014-5264-7] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/16/2014] [Accepted: 06/19/2014] [Indexed: 06/03/2023]
Abstract
Tissue engineering scaffolds are designed to support tissue self-healing within physiological environments by promoting the attachment, growth and differentiation of relevant cells. Newly formed tissue must be supplied with sufficient levels of oxygen to prevent necrosis. Oxygen diffusion is the major transport mechanism before vascularization is completed and oxygen is predominantly supplied via blood vessels. The present study compares different designs for scaffolds in the context of their oxygen diffusion ability. In all cases, oxygen diffusion is confined to the scaffold pores that are assumed to be completely occupied by newly formed tissue. The solid phase of the scaffolds acts as diffusion barrier that locally inhibits oxygen diffusion, i.e. no oxygen passes through the scaffold material. As a result, the oxygen diffusivity is determined by the scaffold porosity and pore architecture. Lattice Monte Carlo simulations are performed to compare the normalized oxygen diffusivities in scaffolds obtained by the foam replication (FR) method, robocasting and sol-gel foaming. Scaffolds made by the FR method were found to have the highest oxygen diffusivity due to their high porosity and interconnected pores. These structures enable the best oxygen supply for newly formed tissue among the scaffold types considered according to the present numerical predictions.
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Affiliation(s)
- T Fiedler
- School of Engineering, The University of Newcastle, Callaghan, NSW 2287, Australia,
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Philippart A, Boccaccini AR, Fleck C, Schubert DW, Roether JA. Toughening and functionalization of bioactive ceramic and glass bone scaffolds by biopolymer coatings and infiltration: a review of the last 5 years. Expert Rev Med Devices 2014; 12:93-111. [PMID: 25331196 DOI: 10.1586/17434440.2015.958075] [Citation(s) in RCA: 77] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Inorganic scaffolds with high interconnected porosity based on bioactive glasses and ceramics are prime candidates for applications in bone tissue engineering. These materials however exhibit relatively low fracture strength and high brittleness. A simple and effective approach to improve the toughness is to combine the basic scaffold structure with polymer coatings or through the formation of interpenetrating polymer-bioactive ceramic microstructures. The polymeric phase can additionally serve as a carrier for growth factors and therapeutic drugs, thus adding biological functionalities. The present paper reviews the state-of-the art in the field of polymer coated and infiltrated bioactive inorganic scaffolds. Based on the notable combination of bioactivity, improved mechanical properties and drug or growth factor delivery capability, this scaffold type is a candidate for bone and osteochondral regeneration strategies. Remaining challenges for the improvement of the materials are discussed and opportunities to broaden the application potential of this scaffold type are also highlighted.
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Sarker B, Singh R, Silva R, Roether JA, Kaschta J, Detsch R, Schubert DW, Cicha I, Boccaccini AR. Evaluation of fibroblasts adhesion and proliferation on alginate-gelatin crosslinked hydrogel. PLoS One 2014; 9:e107952. [PMID: 25268892 PMCID: PMC4182442 DOI: 10.1371/journal.pone.0107952] [Citation(s) in RCA: 153] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2014] [Accepted: 08/17/2014] [Indexed: 12/16/2022] Open
Abstract
Due to the relatively poor cell-material interaction of alginate hydrogel, alginate-gelatin crosslinked (ADA-GEL) hydrogel was synthesized through covalent crosslinking of alginate di-aldehyde (ADA) with gelatin that supported cell attachment, spreading and proliferation. This study highlights the evaluation of the physico-chemical properties of synthesized ADA-GEL hydrogels of different compositions compared to alginate in the form of films. Moreover, in vitro cell-material interaction on ADA-GEL hydrogels of different compositions compared to alginate was investigated by using normal human dermal fibroblasts. Viability, attachment, spreading and proliferation of fibroblasts were significantly increased on ADA-GEL hydrogels compared to alginate. Moreover, in vitro cytocompatibility of ADA-GEL hydrogels was found to be increased with increasing gelatin content. These findings indicate that ADA-GEL hydrogel is a promising material for the biomedical applications in tissue-engineering and regeneration.
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Affiliation(s)
- Bapi Sarker
- Institute of Biomaterials, Department of Materials Science and Engineering, University of Erlangen-Nuremberg, Erlangen, Germany
| | - Raminder Singh
- Department of Cardiology and Angiology, University Hospital Erlangen, Erlangen, Germany
| | - Raquel Silva
- Institute of Biomaterials, Department of Materials Science and Engineering, University of Erlangen-Nuremberg, Erlangen, Germany
| | - Judith A. Roether
- Institute of Polymer Materials, Department of Materials Science and Engineering, University of Erlangen-Nuremberg, Erlangen, Germany
| | - Joachim Kaschta
- Institute of Polymer Materials, Department of Materials Science and Engineering, University of Erlangen-Nuremberg, Erlangen, Germany
| | - Rainer Detsch
- Institute of Biomaterials, Department of Materials Science and Engineering, University of Erlangen-Nuremberg, Erlangen, Germany
| | - Dirk W. Schubert
- Institute of Polymer Materials, Department of Materials Science and Engineering, University of Erlangen-Nuremberg, Erlangen, Germany
| | - Iwona Cicha
- Department of Cardiology and Angiology, University Hospital Erlangen, Erlangen, Germany
- Cardiovascular Nanomedicine Unit, Section of Experimental Oncology and Nanomedicine, ENT Department, University Hospital, Erlangen, Germany
| | - Aldo R. Boccaccini
- Institute of Biomaterials, Department of Materials Science and Engineering, University of Erlangen-Nuremberg, Erlangen, Germany
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Silva R, Bulut B, Roether JA, Kaschta J, Schubert DW, Boccaccini AR. Sonochemical processing and characterization of composite materials based on soy protein and alginate containing micron-sized bioactive glass particles. J Mol Struct 2014. [DOI: 10.1016/j.molstruc.2014.05.047] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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Li W, Ding Y, Rai R, Roether JA, Schubert DW, Boccaccini AR. Preparation and characterization of PHBV microsphere/45S5 bioactive glass composite scaffolds with vancomycin releasing function. Materials Science and Engineering: C 2014; 41:320-8. [DOI: 10.1016/j.msec.2014.04.052] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/05/2013] [Revised: 03/09/2014] [Accepted: 04/21/2014] [Indexed: 12/26/2022]
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Silva R, Singh R, Sarker B, Papageorgiou DG, Juhasz JA, Roether JA, Cicha I, Kaschta J, Schubert DW, Chrissafis K, Detsch R, Boccaccini AR. Hybrid hydrogels based on keratin and alginate for tissue engineering. J Mater Chem B 2014; 2:5441-5451. [PMID: 32261764 DOI: 10.1039/c4tb00776j] [Citation(s) in RCA: 54] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Novel hybrid hydrogels based on alginate and keratin were successfully produced for the first time. The self-assembly properties of keratin, and its ability to mimic the extracellular matrix were combined with the excellent chemical and mechanical stability and biocompatibility of alginate to produce 2D and 3D hybrid hydrogels. These hybrid hydrogels were prepared using two different approaches: sonication, to obtain 2D hydrogels, and a pressure-driven extrusion technique to produce 3D hydrogels. All results indicated that the composition of the hydrogels had a significant effect on their physical properties, and that they can easily be tuned to obtain materials suitable for biological applications. The cell-material interaction was assessed through the use of human umbilical vein endothelial cells, and the results demonstrated that the alginate/keratin hybrid biomaterials supported cell attachment, spreading and proliferation. The results proved that such novel hybrid hydrogels might find applications as scaffolds for soft tissue regeneration.
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Affiliation(s)
- Raquel Silva
- Institute of Biomaterials, Department of Materials Science and Engineering, University of Erlangen-Nuremberg, 91058 Erlangen, Germany.
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Ding Y, Roether JA, Boccaccini AR, Schubert DW. Fabrication of electrospun poly (3-hydroxybutyrate)/poly (ε-caprolactone)/silica hybrid fibermats with and without calcium addition. Eur Polym J 2014. [DOI: 10.1016/j.eurpolymj.2014.03.020] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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Yao Q, Nooeaid P, Detsch R, Roether JA, Dong Y, Goudouri OM, Schubert DW, Boccaccini AR. Bioglass®/chitosan-polycaprolactone bilayered composite scaffolds intended for osteochondral tissue engineering. J Biomed Mater Res A 2014; 102:4510-8. [PMID: 24677705 DOI: 10.1002/jbm.a.35125] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2013] [Revised: 01/29/2014] [Accepted: 02/10/2014] [Indexed: 11/07/2022]
Abstract
Polymer-coated 45S5 Bioglass(®) (BG)/chitosan-polycaprolactone (BG/CS-PCL) bilayered composite scaffolds were prepared via foam replication and freeze-drying techniques for application in osteochondral tissue engineering. The CS-PCL coated and uncoated BG scaffolds were characterized by X-ray diffraction (XRD), Fourier transform infrared (FTIR) spectroscopy and scanning electron microscopy (SEM). The mechanical properties of the coated scaffolds were significantly improved in comparison to uncoated scaffolds. The bioactivity and biodegradation behavior of scaffolds were studied in simulated body fluid (SBF) for up to 28 days. The interface between the BG scaffold and the polymer coating layer was observed by SEM and a suitable interpenetration of the polymer into the scaffold struts was found. The effects of coated and uncoated BG scaffolds on MG-63 osteoblast-like cells were evaluated by cell viability, adhesion and proliferation.
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Affiliation(s)
- Qingqing Yao
- Institute of Advanced Materials for Nano-Bio Applications, School of Ophthalmology & Optometry, Wenzhou Medical College, Wenzhou, Zhejiang, 325027, China; Department of Materials Science and Engineering, Institute of Biomaterials, University of Erlangen-Nuremberg, Cauerstrasse 6, Erlangen, 91058, Germany; Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, People's Republic of China
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Detsch R, Stoor P, Grünewald A, Roether JA, Lindfors NC, Boccaccini AR. Increase in VEGF secretion from human fibroblast cells by bioactive glass S53P4 to stimulate angiogenesis in bone. J Biomed Mater Res A 2014; 102:4055-61. [DOI: 10.1002/jbm.a.35069] [Citation(s) in RCA: 67] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2013] [Accepted: 12/05/2013] [Indexed: 11/11/2022]
Affiliation(s)
- Rainer Detsch
- Department of Materials Science and Engineering; Institute of Biomaterials; University of Erlangen-Nuremberg; 91058 Erlangen Germany
| | - Patricia Stoor
- Department of Oral and Maxillofacial Surgery, Surgical Hospital/Helsinki University Central Hospital; PO Box 263, 000 29 HUS Helsinki Finland
| | - Alina Grünewald
- Department of Materials Science and Engineering; Institute of Biomaterials; University of Erlangen-Nuremberg; 91058 Erlangen Germany
| | - Judith A. Roether
- Department of Materials Science and Engineering, Institute of Polymer Materials; University of Erlangen-Nuremberg; 91058 Erlangen Germany
| | - Nina C. Lindfors
- Department of Hand and Orthopaedic Surgery; Helsinki University Central Hospital; Helsinki Finland
| | - Aldo R. Boccaccini
- Department of Materials Science and Engineering; Institute of Biomaterials; University of Erlangen-Nuremberg; 91058 Erlangen Germany
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Li W, Garmendia N, Pérez de Larraya U, Ding Y, Detsch R, Grünewald A, Roether JA, Schubert DW, Boccaccini AR. 45S5 bioactive glass-based scaffolds coated with cellulose nanowhiskers for bone tissue engineering. RSC Adv 2014. [DOI: 10.1039/c4ra07740g] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
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Papageorgiou GZ, Papageorgiou DG, Chrissafis K, Bikiaris D, Will J, Hoppe A, Roether JA, Boccaccini AR. Crystallization and Melting Behavior of Poly(Butylene Succinate) Nanocomposites Containing Silica-Nanotubes and Strontium Hydroxyapatite Nanorods. Ind Eng Chem Res 2013. [DOI: 10.1021/ie403238u] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- George Z. Papageorgiou
- Laboratory of Polymer Chemistry and Technology, Department of Chemistry, Aristotle University of Thessaloniki, 541 24, Thessaloniki, Macedonia, Greece
| | - Dimitrios G. Papageorgiou
- Solid State
Physics Section, Physics Department, Aristotle University of Thessaloniki, 541 24 Thessaloniki, Greece
| | - Konstantinos Chrissafis
- Solid State
Physics Section, Physics Department, Aristotle University of Thessaloniki, 541 24 Thessaloniki, Greece
| | - Dimitrios Bikiaris
- Laboratory of Polymer Chemistry and Technology, Department of Chemistry, Aristotle University of Thessaloniki, 541 24, Thessaloniki, Macedonia, Greece
| | - Julia Will
- Institute of Biomaterials, Department of Materials Science
and Engineering, University of Erlangen-Nuremberg, Cauerstrasse 6, 91058 Erlangen, Germany
| | - Alexander Hoppe
- Institute of Biomaterials, Department of Materials Science
and Engineering, University of Erlangen-Nuremberg, Cauerstrasse 6, 91058 Erlangen, Germany
| | - Judith A. Roether
- Institute
of Polymer Materials, Department of Materials Science
and Engineering, University of Erlangen-Nuremberg, Martenstrasse 7, 91058 Erlangen, Germany
| | - Aldo R. Boccaccini
- Institute of Biomaterials, Department of Materials Science
and Engineering, University of Erlangen-Nuremberg, Cauerstrasse 6, 91058 Erlangen, Germany
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Rath SN, Nooeaid P, Arkudas A, Beier JP, Strobel LA, Brandl A, Roether JA, Horch RE, Boccaccini AR, Kneser U. Adipose- and bone marrow-derived mesenchymal stem cells display different osteogenic differentiation patterns in 3D bioactive glass-based scaffolds. J Tissue Eng Regen Med 2013; 10:E497-E509. [PMID: 24357645 DOI: 10.1002/term.1849] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2012] [Revised: 02/26/2013] [Accepted: 10/07/2013] [Indexed: 12/22/2022]
Abstract
Mesenchymal stem cells can be isolated from a variety of different sources, each having their own peculiar merits and drawbacks. Although a number of studies have been conducted comparing these stem cells for their osteo-differentiation ability, these are mostly done in culture plastics. We have selected stem cells from either adipose tissue (ADSCs) or bone marrow (BMSCs) and studied their differentiation ability in highly porous three-dimensional (3D) 45S5 Bioglass®-based scaffolds. Equal numbers of cells were seeded onto 5 × 5 × 4 mm3 scaffolds and cultured in vitro, with or without osteo-induction medium. After 2 and 4 weeks, the cell-scaffold constructs were analysed for cell number, cell spreading, viability, alkaline phosphatase activity and osteogenic gene expression. The scaffolds with ADSCs displayed osteo-differentiation even without osteo-induction medium; however, with osteo-induction medium osteogenic differentiation was further increased. In contrast, the scaffolds with BMSCs showed no osteo-differentiation without osteo-induction medium; after application of osteo-induction medium, osteo-differentiation was confirmed, although lower than in scaffolds with ADSCs. In general, stem cells in 3D bioactive glass scaffolds differentiated better than cells in culture plastics with respect to their ALP content and osteogenic gene expression. In summary, 45S5 Bioglass-based scaffolds seeded with ADSCs are well-suited for possible bone tissue-engineering applications. Induction of osteogenic differentiation appears unnecessary prior to implantation in this specific setting. Copyright © 2013 John Wiley & Sons, Ltd.
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Affiliation(s)
- Subha N Rath
- Department of Plastic and Hand Surgery, Laboratory for Tissue Engineering and Regenerative Medicine, Nikolaus Fiebiger Zentrum, University of Erlangen-Nürnberg, Erlangen, Germany.,Department of Biomedical Engineering, Indian Institute of Technology, Hyderabad, India
| | - Patcharakamon Nooeaid
- Institute of Biomaterials, Department of Materials Science and Engineering, University of Erlangen-Nürnberg, Erlangen, Germany
| | - Andreas Arkudas
- Department of Plastic and Hand Surgery, Laboratory for Tissue Engineering and Regenerative Medicine, Nikolaus Fiebiger Zentrum, University of Erlangen-Nürnberg, Erlangen, Germany
| | - Justus P Beier
- Department of Plastic and Hand Surgery, Laboratory for Tissue Engineering and Regenerative Medicine, Nikolaus Fiebiger Zentrum, University of Erlangen-Nürnberg, Erlangen, Germany
| | - Leonie A Strobel
- Department of Plastic and Hand Surgery, Laboratory for Tissue Engineering and Regenerative Medicine, Nikolaus Fiebiger Zentrum, University of Erlangen-Nürnberg, Erlangen, Germany.,Department of Hand, Plastic and Reconstructive Surgery - Burns Centre, BG Trauma Centre Ludwigshafen and Department of Plastic Surgery, University of Heidelberg, Germany
| | - Andreas Brandl
- Department of Plastic and Hand Surgery, Laboratory for Tissue Engineering and Regenerative Medicine, Nikolaus Fiebiger Zentrum, University of Erlangen-Nürnberg, Erlangen, Germany
| | - Judith A Roether
- Institute of Polymer Materials, University of Erlangen-Nürnberg, Erlangen, Germany
| | - Raymund E Horch
- Department of Plastic and Hand Surgery, Laboratory for Tissue Engineering and Regenerative Medicine, Nikolaus Fiebiger Zentrum, University of Erlangen-Nürnberg, Erlangen, Germany
| | - Aldo R Boccaccini
- Institute of Biomaterials, Department of Materials Science and Engineering, University of Erlangen-Nürnberg, Erlangen, Germany
| | - Ulrich Kneser
- Department of Plastic and Hand Surgery, Laboratory for Tissue Engineering and Regenerative Medicine, Nikolaus Fiebiger Zentrum, University of Erlangen-Nürnberg, Erlangen, Germany. .,Department of Hand, Plastic and Reconstructive Surgery - Burns Centre, BG Trauma Centre Ludwigshafen and Department of Plastic Surgery, University of Heidelberg, Germany.
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Rai R, Tallawi M, Barbani N, Frati C, Madeddu D, Cavalli S, Graiani G, Quaini F, Roether JA, Schubert DW, Rosellini E, Boccaccini AR. Biomimetic poly(glycerol sebacate) (PGS) membranes for cardiac patch application. Materials Science and Engineering: C 2013; 33:3677-87. [DOI: 10.1016/j.msec.2013.04.058] [Citation(s) in RCA: 69] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/16/2013] [Revised: 04/12/2013] [Accepted: 04/26/2013] [Indexed: 10/26/2022]
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Desimone D, Li W, Roether JA, Schubert DW, Crovace MC, Rodrigues ACM, Zanotto ED, Boccaccini AR. Biosilicate ®-gelatine bone scaffolds by the foam replica technique: development and characterization. Sci Technol Adv Mater 2013; 14:045008. [PMID: 27877601 PMCID: PMC5090327 DOI: 10.1088/1468-6996/14/4/045008] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/07/2013] [Accepted: 07/11/2013] [Indexed: 05/30/2023]
Abstract
The development of bioactive glass-ceramic materials has been a topic of great interest aiming at enhancing the mechanical strength of traditional bioactive scaffolds. In the present study, we test and demonstrate the use of Biosilicate® glass-ceramic powder to fabricate bone scaffolds by the foam replica method. Scaffolds possessing the main requirements for use in bone tissue engineering (95% porosity, 200-500 μm pore size) were successfully produced. Gelatine coating was investigated as a simple approach to increase the mechanical competence of the scaffolds. The gelatine coating did not affect the interconnectivity of the pores and did not significantly affect the bioactivity of the Biosilicate® scaffold. The gelatine coating significantly improved the compressive strength (i.e. 0.80 ± 0.05 MPa of coated versus 0.06 ± 0.01 MPa of uncoated scaffolds) of the Biosilicate® scaffold. The combination of Biosilicate® glass-ceramic and gelatine is attractive for producing novel scaffolds for bone tissue engineering.
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Affiliation(s)
- Deborah Desimone
- Institute of Biomaterials, Department of Materials Science and Engineering, University of Erlangen-Nuremberg, Cauerstrasse 6, D-91058 Erlangen, Germany
| | - Wei Li
- Institute of Biomaterials, Department of Materials Science and Engineering, University of Erlangen-Nuremberg, Cauerstrasse 6, D-91058 Erlangen, Germany
| | - Judith A Roether
- Institute of Polymer Materials, Department of Materials Science and Engineering, University of Erlangen-Nuremberg, Martensstrasse 7, D-91058 Erlangen, Germany
| | - Dirk W Schubert
- Institute of Polymer Materials, Department of Materials Science and Engineering, University of Erlangen-Nuremberg, Martensstrasse 7, D-91058 Erlangen, Germany
| | - Murilo C Crovace
- Vitreous Materials Laboratory, Department of Materials Engineering, Federal University of São Carlos, São Carlos, São Paulo, Brazil
| | - Ana Candida M Rodrigues
- Vitreous Materials Laboratory, Department of Materials Engineering, Federal University of São Carlos, São Carlos, São Paulo, Brazil
| | - Edgar D Zanotto
- Vitreous Materials Laboratory, Department of Materials Engineering, Federal University of São Carlos, São Carlos, São Paulo, Brazil
| | - Aldo R Boccaccini
- Institute of Biomaterials, Department of Materials Science and Engineering, University of Erlangen-Nuremberg, Cauerstrasse 6, D-91058 Erlangen, Germany
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Mouriño V, Cattalini JP, Roether JA, Dubey P, Roy I, Boccaccini AR. Composite polymer-bioceramic scaffolds with drug delivery capability for bone tissue engineering. Expert Opin Drug Deliv 2013; 10:1353-65. [PMID: 23777443 DOI: 10.1517/17425247.2013.808183] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
INTRODUCTION Next-generation scaffolds for bone tissue engineering (BTE) should exhibit the appropriate combination of mechanical support and morphological guidance for cell proliferation and attachment while at the same time serving as matrices for sustained delivery of therapeutic drugs and/or biomolecular signals, such as growth factors. Drug delivery from BTE scaffolds to induce the formation of functional tissues, which may need to vary temporally and spatially, represents a versatile approach to manipulating the local environment for directing cell function and/or to treat common bone diseases or local infection. In addition, drug delivery from BTE is proposed to either increase the expression of tissue inductive factors or to block the expression of others factors that could inhibit bone tissue formation. Composite scaffolds which combine biopolymers and bioactive ceramics in mechanically competent 3D structures, including also organic-inorganic hybrids, are being widely developed for BTE, where the affinity and interaction between biomaterials and therapeutic drugs or biomolecular signals play a decisive role in controlling the release rate. AREAS COVERED This review covers current developments and applications of 3D composite scaffolds for BTE which exhibit the added capability of controlled delivery of therapeutic drugs or growth factors. A summary of drugs and biomolecules incorporated in composite scaffolds and approaches developed to combine biopolymers and bioceramics in composites for drug delivery systems for BTE is presented. Special attention is given to identify the main challenges and unmet needs of current designs and technologies for developing such multifunctional 3D composite scaffolds for BTE. EXPERT OPINION One of the major challenges for developing composite scaffolds for BTE is the incorporation of a drug delivery function of sufficient complexity to be able to induce the release patterns that may be necessary for effective osseointegration, vascularization and bone regeneration. Loading 3D scaffolds with different biomolecular agents should produce a codelivery system with different, predetermined release profiles. It is also envisaged that the number of relevant bioactive agents that can be loaded onto scaffolds will be increased, whilst the composite scaffold design should exploit synergistically the different degradation profiles of the organic and inorganic components.
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Affiliation(s)
- Viviana Mouriño
- University of Buenos Aires, Faculty of Pharmacy, Department of Pharmaceutical Technology , Buenos Aires 956 Junín St, 6th Floor, Buenos Aires CP1113 , Argentina
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Chew KK, Low KL, Sharif Zein SH, McPhail DS, Gerhardt LC, Roether JA, Boccaccini AR. Reinforcement of calcium phosphate cement with multi-walled carbon nanotubes and bovine serum albumin for injectable bone substitute applications. J Mech Behav Biomed Mater 2010; 4:331-9. [PMID: 21316621 DOI: 10.1016/j.jmbbm.2010.10.013] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2010] [Revised: 10/28/2010] [Accepted: 10/31/2010] [Indexed: 11/19/2022]
Abstract
This paper presents the development of novel alternative injectable calcium phosphate cement (CPC) composites for orthopaedic applications. The new CPC composites comprise β-tri-calcium phosphate (β-TCP) and di-calcium phosphate anhydrous (DCPA) mixed with bovine serum albumin (BSA) and incorporated with multi-walled carbon nanotubes (MWCNTs) or functionalized MWCNTs (MWCNTs-OH and MWCNTs-COOH). Scanning electron microscopy (SEM), compressive strength tests, injectability tests, Fourier transform infrared spectroscopy and X-ray diffraction were used to evaluate the properties of the final products. Compressive strength tests and SEM observations demonstrated particularly that the concomitant admixture of BSA and MWCNT improved the mechanical properties, resulting in stronger CPC composites. The presence of MWCNTs and BSA influenced the morphology of the hydroxyapatite (HA) crystals in the CPC matrix. BSA was found to act as a promoter of HA growth when bounded to the surface of CPC grains. MWCNT-OH-containing composites exhibited the highest compressive strengths (16.3 MPa), being in the range of values for trabecular bone (2-12 MPa).
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Affiliation(s)
- Kean-Khoon Chew
- School of Chemical Engineering, Engineering Campus, Universiti Sains Malaysia, Seri Ampangan 14300 Nibong Tebal, Seberang Perai Selatan, Pulau Pinang, Malaysia
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Low KL, Tan SH, Zein SHS, Roether JA, Mouriño V, Boccaccini AR. Calcium phosphate-based composites as injectable bone substitute materials. J Biomed Mater Res B Appl Biomater 2010; 94:273-86. [PMID: 20336722 DOI: 10.1002/jbm.b.31619] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
A major weakness of current orthopedic implant materials, for instance sintered hydroxyapatite (HA), is that they exist as a hardened form, requiring the surgeon to fit the surgical site around an implant to the desired shape. This can cause an increase in bone loss, trauma to the surrounding tissue, and longer surgical time. A convenient alternative to harden bone filling materials are injectable bone substitutes (IBS). In this article, recent progress in the development and application of calcium phosphate (CP)-based composites use as IBS is reviewed. CP materials have been used widely for bone replacement because of their similarity to the mineral component of bone. The main limitation of bulk CP materials is their brittle nature and poor mechanical properties. There is significant effort to reinforce or improve the mechanical properties and injectability of calcium phosphate cement (CPC) and this review resumes different alternatives presented in this specialized literature.
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Affiliation(s)
- Kah Ling Low
- School of Chemical Engineering, Engineering Campus, Universiti Sains Malaysia, Seri Ampangan 14300 Nibong Tebal, Seberang Perai Selatan, Pulau Pinang, Malaysia
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Stuckey DJ, Ishii H, Chen QZ, Boccaccini AR, Hansen U, Carr CA, Roether JA, Jawad H, Tyler DJ, Ali NN, Clarke K, Harding SE. Magnetic resonance imaging evaluation of remodeling by cardiac elastomeric tissue scaffold biomaterials in a rat model of myocardial infarction. Tissue Eng Part A 2010; 16:3395-402. [PMID: 20528670 DOI: 10.1089/ten.tea.2010.0213] [Citation(s) in RCA: 66] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Grafting of elastomeric biomaterial scaffolds may offer a radical strategy for the prevention of heart failure after myocardial infarction by increasing efficacy of stem cell delivery as well as acting as mechanical restraint devices to constrain scar expansion. Biomaterials can be partially optimized in vitro, but their in vivo performance is most critical and should ideally be monitored serially and noninvasively. We used magnetic resonance imaging (MRI) to assess three scaffold materials with a range of structural moduli equal to or greater than myocardial tissue: poly(glycerol sebacate) (PGS), poly(ethyleneterephathalate)/dimer fatty acid (PED), and TiO(2)-reinforced PED (PED-TiO(2)). Patches, 1 cm in diameter, were grafted onto the hearts of infarcted rats, with biomaterial-free infarcted rat hearts used as controls. MRI was able to determine scaffold size and location on the heart and identified unexpectedly rapid in vivo degradation of the PGS compared with previous in vitro testing. PED patches did not withstand in vivo attachment, but the more rigid PED-TiO(2) material was detrimental to heart function, increasing chamber and scar sizes and reducing ejection fractions compared with controls. In contrast, the mechanically compatible PGS scaffold successfully reduced hypertrophy, giving it potential for limiting excessive postinfarct remodeling. PGS was unable to support systolic function, but it would be suitable for strategies to deliver cardiac stem/progenitor cells, to limit remodeling during the period of functional cellular integration, and to degrade after cell assimilation by the heart. This work has also shown for the first time the value of using MRI as a noninvasive tool for evaluating and optimizing therapeutic biomaterials in vivo.
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Affiliation(s)
- Daniel J Stuckey
- Department of Physiology, Anatomy and Genetics, University of Oxford, Oxford, United Kingdom.
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Gorustovich AA, Roether JA, Boccaccini AR. Effect of Bioactive Glasses on Angiogenesis: A Review of In Vitro and In Vivo Evidences. Tissue Engineering Part B: Reviews 2010; 16:199-207. [DOI: 10.1089/ten.teb.2009.0416] [Citation(s) in RCA: 471] [Impact Index Per Article: 33.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Alejandro A. Gorustovich
- Research Laboratory, National Atomic Energy Commission (CNEA-Reg. Noroeste), Salta, Argentina
- National Research Council (CONICET), Buenos Aires, Argentina
| | - Judith A. Roether
- Department of Materials, Imperial College London, London, United Kingdom
| | - Aldo R. Boccaccini
- Department of Materials, Imperial College London, London, United Kingdom
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Roether JA, Daniel DJ, Rani DA, Deegan DE, Cheeseman CR, Boccaccini AR. Properties of sintered glass-ceramics prepared from plasma vitrified air pollution control residues. J Hazard Mater 2010; 173:563-569. [PMID: 19773123 DOI: 10.1016/j.jhazmat.2009.08.123] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/25/2009] [Revised: 08/24/2009] [Accepted: 08/26/2009] [Indexed: 05/28/2023]
Abstract
Air pollution control (APC) residues, obtained from a major UK energy from waste (EfW) plant, processing municipal solid waste, have been blended with silica and alumina and melted using DC plasma arc technology. The glass produced was crushed, milled, uni-axially pressed and sintered at temperatures between 750 and 1150 degrees C, and the glass-ceramics formed were investigated by X-ray diffraction (XRD), scanning electron microscopy (SEM) and transmission electron microscopy (TEM). Mechanical properties assessed included Vickers's hardness, flexural strength, Young's modulus and thermal shock resistance. The optimum sintering temperature was found to be 950 degrees C. This produced a glass-ceramic with high density (approximately 2.58 g/cm(3)), minimum water absorption (approximately 2%) and relatively high mechanical strength (approximately 81+/-4 MPa). Thermal shock testing showed that 950 degrees C sintered samples could withstand a 700 degrees C quench in water without micro-cracking. The research demonstrates that glass-ceramics can be readily formed from DC plasma treated APC residues and that these have comparable properties to marble and porcelain. This novel approach represents a technically and commercially viable treatment option for APC residues that allow the beneficial reuse of this problematic waste.
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Affiliation(s)
- J A Roether
- Department of Materials, Imperial College London, London SW7 2AZ, UK
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Mantsos T, Chatzistavrou X, Roether JA, Hupa L, Arstila H, Boccaccini AR. Non-crystalline composite tissue engineering scaffolds using boron-containing bioactive glass and poly(d,l-lactic acid) coatings. Biomed Mater 2009; 4:055002. [DOI: 10.1088/1748-6041/4/5/055002] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Zawadzak E, Bil M, Ryszkowska J, Nazhat SN, Cho J, Bretcanu O, Roether JA, Boccaccini AR. Polyurethane foams electrophoretically coated with carbon nanotubes for tissue engineering scaffolds. Biomed Mater 2008; 4:015008. [DOI: 10.1088/1748-6041/4/1/015008] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Maeda H, Maquet V, Kasuga T, Chen QZ, Roether JA, Boccaccini AR. Vaterite deposition on biodegradable polymer foam scaffolds for inducing bone-like hydroxycarbonate apatite coatings. J Mater Sci Mater Med 2007; 18:2269-73. [PMID: 17562142 DOI: 10.1007/s10856-007-3108-4] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/20/2005] [Accepted: 07/10/2006] [Indexed: 05/15/2023]
Abstract
Hydroxycarbonate apatite (HCA) coatings on the surface of bioresorbable materials for bone tissue engineering scaffolds were produced using macroporous poly(DL-lactide) (PDLLA) foams impregnated by calcium carbonate in vaterite crystalline form. Stable and homogeneous vaterite deposition on PDLLA foams was achieved using a slurry dipping technique. In vitro studies in simulated body fluid (SBF) were performed to induce formation of (HCA) on the surface of vaterite/PDLLA composite foams. HCA was detected after immersion of foams in SBF for 7 days. Hence, depositing vaterite on materials followed by immersion in SBF is confirmed to induce HCA coatings on the surface of the material. The HCA coated, bioactive and resorbable PDLLA foams are intended for use as bone tissue engineering scaffolds.
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Affiliation(s)
- H Maeda
- Department of Materials Science and Engineering, Graduate School of Engineering, Nagoya Institute of Technology, Nagoya 466-8555, Japan
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Bil M, Ryszkowska J, Roether JA, Bretcanu O, Boccaccini AR. Bioactivity of polyurethane-based scaffolds coated with Bioglass®. Biomed Mater 2007; 2:93-101. [DOI: 10.1088/1748-6041/2/2/006] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Abstract
Self-curing two-paste bone cements have been developed using methacrylate monomers with a view to formulate cements with low polymerization exotherm, low shrinkage, better mechanical properties, and improved adhesion to bone and implant surfaces. The monomers include bis-phenol A glycidyl dimethacrylate (bis-GMA), urethane dimethacrylate (UDMA) and triethylene glycol dimethacrylate (TEGDMA) as a viscosity modifier. Two-paste systems were formulated containing 60% by weight of a bioactive ceramic, hydroxyapatite. A methacroyloxy silane (A174) was used as a coupling agent due to its higher water stability in comparison to other aminosilanes to silanate the hydroxyapatite particles prior to composite formulation. A comparison of the FT-infrared spectrum of hydroxyapatite and silanated hydroxyapatite showed the presence of the carbonyl groups ( approximately 1720 cm(-1)), -C=C-( approximately 1630 cm(-1)) and Si-O- (1300-1250 cm(-1)) which indicated the availability of silane groups on the filler surface. Two methods of mixing were effected to form the bone cement: firstly by mixing in an open bowl and secondly by extruding the two pastes by an auto-mixing tip using a gun to dispense the pastes. Both types of cements yielded low polymerization exotherms with good mechanical properties; however, the lower viscosity of UDMA allowed better extrusion and handling properties. A biologically active apatite layer formed on the bone cement surface within a short period after its immersion in simulated body fluid, demonstrating in vitro bioactivity of the composite. This preliminary data thus suggests that UDMA is a viable alternative to bis-GMA as a polymerizable matrix in the formation of bone cements.
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Affiliation(s)
- S Deb
- Department of Dental Biomaterials, Guy's King's & St. Thomas' Dental Institute, King's College, Floor 17, Guy's Tower, London Bridge, London SE1 2RT, UK.
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Day RM, Boccaccini AR, Shurey S, Roether JA, Forbes A, Hench LL, Gabe SM. Assessment of polyglycolic acid mesh and bioactive glass for soft-tissue engineering scaffolds. Biomaterials 2005; 25:5857-66. [PMID: 15172498 DOI: 10.1016/j.biomaterials.2004.01.043] [Citation(s) in RCA: 173] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2004] [Accepted: 01/20/2004] [Indexed: 11/15/2022]
Abstract
Sufficient neovascularization of neotissue is currently a limiting factor for the engineering of large tissue constructs. 45S5 Bioglass has been investigated extensively in bone tissue engineering but there has been relatively little previous research on its application to soft-tissue engineering. The objectives of this study were to investigate the use of 45S5 Bioglass in soft-tissue engineering scaffolds using in vitro and in vivo models. A fibroblast cell line (208F) was used for in vitro evaluation of surfaces coated with 45S5 Bioglass. Increased proliferation of fibroblasts was observed after growth on polystyrene surfaces coated with low concentrations (0.01-0.2%wt/vol) of 45S5 Bioglass for 24 h in vitro, determined as a change in total cell number by measuring lactate dehydrogenase. At higher concentrations of 45S5 Bioglass and longer periods of incubation (48 and 72 h) on coated surfaces, cell proliferation was reduced. Light microscopy revealed that the morphology of fibroblasts grown on 45S5 Bioglass-coated surfaces was not altered at low concentrations, but at higher concentrations fibroblasts became vacuolated. Enzyme-linked immunosorbent assay of conditioned culture medium collected from fibroblasts grown for 24 h on surfaces coated with low concentrations of 45S5 Bioglass (0.01%wt/vol) was found to contain significantly higher concentrations of vascular endothelial growth factor. Histological examination of polyglycolic acid (PGA)/45S5 Bioglass composite scaffolds that had been implanted subcutaneously into rats revealed that 45S5 Bioglass-coated meshes were well tolerated. Light microscopy revealed that neovascularization into 45S5 Bioglass-coated meshes was significantly increased at 28 and 42 days. Electron microscopy revealed fibroblasts adhering closely to the PGA mesh but not to 45S5 Bioglass particles. The apparent ability of 45S5 Bioglass incorporated into scaffolds to increase neovascularization would be extremely beneficial during the engineering of larger soft-tissue constructs.
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Affiliation(s)
- Richard M Day
- Biomaterials and Tissue Engineering Group, St Mark's Hospital & Academic Institute, Watford Road, Harrow HA1 3UJ, UK.
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Abstract
Bioactive bone cements based on a paste-paste system for orthopaedic applications have been developed. They consist of hydroxyapatite (HA) filler particles in a methacrylate matrix comprising urethane dimethacrylate (UDMA) and triethylene glycol dimethacrylate (TEGDMA). To improve the interface between inorganic filler and organic matrix the HA particles were subjected to two different surface treatment methods, using polyacrylic acid (PAA) and gamma-methacryloxypropyltrimethoxy silane (gammaMPS). The aim of the present study was to determine the influence of surface treatment on the mechanical properties, namely compressive strength (CS), diametral tensile strength (DTS) and three-point flexural strength (FS) of the cements and the effect of ageing in simulated body fluid (SBF). Comparing the mechanical properties of the two cements after fabrication, the gammaMPS-HA cement showed higher strength values for all tests conducted (CS = 185+/-19.6 MPa, DTS = 27+/-2.5 MPa, FS=50.2+/-4.9 MPa), whereas PAA-HA containing cement had strength values around 20% lower. However, poly(acrylic acid) surface treatment was found to be more effective in improving the interface, and PAA-HA cements maintained their mechanical properties after immersion in SBF whereas gammaMPS-HA cement showed a reduction in strength values post ageing. From the results of this study, it is concluded that PAA treatment of the HA filler is a viable alternative to silanation with gammaMPS which may provide increased durability in aqueous environments.
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Affiliation(s)
- J A Roether
- Department of Dental Biomaterials, Guy's, King's and St Thomas' Dental Institute, Floor 17, Guy's Tower, King's College, Guy's Campus, London SE1 9RT, UK
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Abstract
A processing method was developed to coat polyglactin 910 (Vicryl) sutures with bioactive glass powder (45S5 Bioglass). High reproducibility and homogeneity of the coating in terms of microstructure and thickness along the suture length were achieved. Bioglass-coated sutures exhibited a high level of chemical reactivity in simulated body fluid (SBF), indicating their bioactive behavior. This was evident by the prompt formation of hydroxyapatite (HA) crystals on the surface after only 7 days of immersion in SBF. These crystals grew to form a thick HA layer (15 microm thickness) after 3 weeks in SBF. The tensile strength of the sutures was tested before and after immersion in SBF in order to assess the effect of the bioactive glass coating on suture degradation. The tensile strength of composite sutures was lower than that of as-received Vicryl sutures, 385 and 467 MPa, respectively. However, after 28 days of immersion in SBF the residual tensile strengths of coated and uncoated sutures were similar (83 and 88 MPa, respectively), indicating no negative effect of the HA layer formation on the suture strength. The effect of bioactive glass coating on the polymer degradation is discussed. The developed bioactive sutures represent interesting materials for applications in wound healing, fabrication of fibrous three-dimensional scaffolds for tissue engineering, and reinforcement elements for calcium-phosphate temporary implants.
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Affiliation(s)
- Aldo R Boccaccini
- Department of Materials and Centre for Tissue Engineering and Regenerative Medicine, Imperial College London, Prince Consort Road, London SW7 2BP, UK.
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Roether JA, Gough JE, Boccaccini AR, Hench LL, Maquet V, Jérôme R. Novel bioresorbable and bioactive composites based on bioactive glass and polylactide foams for bone tissue engineering. J Mater Sci Mater Med 2002; 13:1207-1214. [PMID: 15348667 DOI: 10.1023/a:1021166726914] [Citation(s) in RCA: 57] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Bioresorbable and bioactive tissue engineering scaffolds based on bioactive glass (45S5 Bioglass(R)) particles and macroporous poly(DL-lactide) (PDLLA) foams were fabricated. A slurry dipping technique in conjunction with pretreatment in ethanol was used to achieve reproducible and well adhering bioactive glass coatings of uniform thickness on the internal and external surfaces of the foams. In vitro studies in simulated body fluid (SBF) demonstrated rapid hydroxyapatite (HA) formation on the surface of the composites, indicating their bioactivity. For comparison, composite foams containing Bioglass(R) particles as filler for the polymer matrix (in concentration of up to 40 wt %) were prepared by freeze-drying, enabling homogenous glass particle distribution in the polymer matrix. The formation of HA on the composite surfaces after immersion in phosphate buffer saline (PBS) was investigated to confirm the bioactivity of the composites. Human osteoblasts (HOBs) were seeded onto as-fabricated PDLLA foams and onto PDLLA foams coated with Bioglass(R) particles to determine early cell attachment and spreading. Cells were observed to attach and spread on all surfaces after the first 90 min in culture. The results of this study indicate that the fabricated composite materials have potential as scaffolds for guided bone regeneration.
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Affiliation(s)
- J A Roether
- Department of Materials, Imperial College, London, UK.
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