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Cui Y, Hong S, Jiang W, Li X, Zhou X, He X, Liu J, Lin K, Mao L. Engineering mesoporous bioactive glasses for emerging stimuli-responsive drug delivery and theranostic applications. Bioact Mater 2024; 34:436-462. [PMID: 38282967 PMCID: PMC10821497 DOI: 10.1016/j.bioactmat.2024.01.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2023] [Revised: 12/17/2023] [Accepted: 01/02/2024] [Indexed: 01/30/2024] Open
Abstract
Mesoporous bioactive glasses (MBGs), which belong to the category of modern porous nanomaterials, have garnered significant attention due to their impressive biological activities, appealing physicochemical properties, and desirable morphological features. They hold immense potential for utilization in diverse fields, including adsorption, separation, catalysis, bioengineering, and medicine. Despite possessing interior porous structures, excellent morphological characteristics, and superior biocompatibility, primitive MBGs face challenges related to weak encapsulation efficiency, drug loading, and mechanical strength when applied in biomedical fields. It is important to note that the advantageous attributes of MBGs can be effectively preserved by incorporating supramolecular assemblies, miscellaneous metal species, and their conjugates into the material surfaces or intrinsic mesoporous networks. The innovative advancements in these modified colloidal inorganic nanocarriers inspire researchers to explore novel applications, such as stimuli-responsive drug delivery, with exceptional in-vivo performances. In view of the above, we outline the fabrication process of calcium-silicon-phosphorus based MBGs, followed by discussions on their significant progress in various engineered strategies involving surface functionalization, nanostructures, and network modification. Furthermore, we emphasize the recent advancements in the textural and physicochemical properties of MBGs, along with their theranostic potentials in multiple cancerous and non-cancerous diseases. Lastly, we recapitulate compelling viewpoints, with specific considerations given from bench to bedside.
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Affiliation(s)
| | | | | | - Xiaojing Li
- Department of Oral & Cranio-Maxillofacial Surgery, Shanghai Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine, National Clinical Research Center for Oral Diseases, Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology, Shanghai, 200011, China
| | - Xingyu Zhou
- Department of Oral & Cranio-Maxillofacial Surgery, Shanghai Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine, National Clinical Research Center for Oral Diseases, Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology, Shanghai, 200011, China
| | - Xiaoya He
- Department of Oral & Cranio-Maxillofacial Surgery, Shanghai Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine, National Clinical Research Center for Oral Diseases, Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology, Shanghai, 200011, China
| | - Jiaqiang Liu
- Department of Oral & Cranio-Maxillofacial Surgery, Shanghai Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine, National Clinical Research Center for Oral Diseases, Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology, Shanghai, 200011, China
| | - Kaili Lin
- Department of Oral & Cranio-Maxillofacial Surgery, Shanghai Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine, National Clinical Research Center for Oral Diseases, Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology, Shanghai, 200011, China
| | - Lixia Mao
- Department of Oral & Cranio-Maxillofacial Surgery, Shanghai Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine, National Clinical Research Center for Oral Diseases, Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology, Shanghai, 200011, China
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Huang T, Jia J, Zhu C, Tian J, Zhang S, Yang X, Lei B, Li Y. A novel mussel-inspired desensitizer based on radial mesoporous bioactive nanoglass for the treatment of dentin exposure: An in vitro study. J Mech Behav Biomed Mater 2024; 152:106420. [PMID: 38310812 DOI: 10.1016/j.jmbbm.2024.106420] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2023] [Revised: 01/18/2024] [Accepted: 01/23/2024] [Indexed: 02/06/2024]
Abstract
OBJECTIVES The dentin exposure always leads to dentin hypersensitivity and the acid-resistant/abrasion-resistant stability of current therapeutic approaches remain unsatisfatory. Inspired by the excellent self-polymerization/adherence activity of mussels and the superior mineralization ability of bioactive glass, a novel radial mesoporous bioactive nanoglass coated with polydopamine (RMBG@PDA) was developed for prevention and management of dentin hypersensitivity. METHODS Radial mesoporous bioactive nanoglass (RMBG) was synthesized by the sol-gel process combined with the cetylpyridine bromide template self-assembly technique. RMBG@PDA was synthesized by a self-polymerization process involving dopamine and RMBG in an alkaline environment. Then, the nanoscale morphology, chemical structure, crystalline phase and Zeta potential of RMBG and RMBG@PDA were characterized. Subsequently, the ion release ability, bioactivity, and cytotoxicity of RMBG and RMBG@PDA in vitro were investigated. Moreover, an in vitro experimental model of dentin hypersensitivity was constructed to evaluate the effectiveness of RMBG@PDA on dentinal tubule occlusion, including resistances against acid and abrasion. Finally, the Young's modulus and nanohardness of acid-etched dentin were also detected after RMBG@PDA treatment. RESULTS RMBG@PDA showed a typical nanoscale morphology and noncrystalline structure. The use of RMBG@PDA on the dentin surface could effectively occlude dentinal tubules, reduce dentin permeability and achieve excellent acid- and abrasion-resistant stability. Furthermore, RMBG@PDA with excellent cytocompatibility held the capability to recover the Young's modulus and nanohardness of acid-etched dentin. CONCLUSION The application of RMBG@PDA with superior dentin tubule occlusion ability and acid/abrasion-resistant stability can provide a therapeutic strategy for the prevention and the management of dentin hypersensitivity.
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Affiliation(s)
- Tianjia Huang
- Key Laboratory of Shaanxi Province for Craniofacial Precision Medicine Research, Clinical Research Center of Shaanxi Province for Dental and Maxillofacial Diseases, College of Stomatology, Xi'an Jiaotong University, Xi'an, Shaanxi, 710004, China
| | - Jieyong Jia
- Key Laboratory of Shaanxi Province for Craniofacial Precision Medicine Research, Clinical Research Center of Shaanxi Province for Dental and Maxillofacial Diseases, College of Stomatology, Xi'an Jiaotong University, Xi'an, Shaanxi, 710004, China
| | - Changze Zhu
- Key Laboratory of Shaanxi Province for Craniofacial Precision Medicine Research, Clinical Research Center of Shaanxi Province for Dental and Maxillofacial Diseases, College of Stomatology, Xi'an Jiaotong University, Xi'an, Shaanxi, 710004, China
| | - Jing Tian
- Key Laboratory of Shaanxi Province for Craniofacial Precision Medicine Research, Clinical Research Center of Shaanxi Province for Dental and Maxillofacial Diseases, College of Stomatology, Xi'an Jiaotong University, Xi'an, Shaanxi, 710004, China; Frontier Institute of Science and Technology, Xi'an Jiaotong University, Xi'an, 710054, China
| | - Shiyi Zhang
- Key Laboratory of Shaanxi Province for Craniofacial Precision Medicine Research, Clinical Research Center of Shaanxi Province for Dental and Maxillofacial Diseases, College of Stomatology, Xi'an Jiaotong University, Xi'an, Shaanxi, 710004, China
| | - Xiaoxi Yang
- Key Laboratory of Shaanxi Province for Craniofacial Precision Medicine Research, Clinical Research Center of Shaanxi Province for Dental and Maxillofacial Diseases, College of Stomatology, Xi'an Jiaotong University, Xi'an, Shaanxi, 710004, China
| | - Bo Lei
- Key Laboratory of Shaanxi Province for Craniofacial Precision Medicine Research, Clinical Research Center of Shaanxi Province for Dental and Maxillofacial Diseases, College of Stomatology, Xi'an Jiaotong University, Xi'an, Shaanxi, 710004, China; Frontier Institute of Science and Technology, Xi'an Jiaotong University, Xi'an, 710054, China.
| | - Yuncong Li
- Key Laboratory of Shaanxi Province for Craniofacial Precision Medicine Research, Clinical Research Center of Shaanxi Province for Dental and Maxillofacial Diseases, College of Stomatology, Xi'an Jiaotong University, Xi'an, Shaanxi, 710004, China.
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Kara Özenler A, Distler T, Akkineni AR, Tihminlioglu F, Gelinsky M, Boccaccini AR. 3D bioprinting of mouse pre-osteoblasts and human MSCs using bioinks consisting of gelatin and decellularized bone particles. Biofabrication 2024; 16:025027. [PMID: 38394672 DOI: 10.1088/1758-5090/ad2c98] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2023] [Accepted: 02/23/2024] [Indexed: 02/25/2024]
Abstract
One of the key challenges in biofabrication applications is to obtain bioinks that provide a balance between printability, shape fidelity, cell viability, and tissue maturation. Decellularization methods allow the extraction of natural extracellular matrix, preserving tissue-specific matrix proteins. However, the critical challenge in bone decellularization is to preserve both organic (collagen, proteoglycans) and inorganic components (hydroxyapatite) to maintain the natural composition and functionality of bone. Besides, there is a need to investigate the effects of decellularized bone (DB) particles as a tissue-based additive in bioink formulation to develop functional bioinks. Here we evaluated the effect of incorporating DB particles of different sizes (≤45 and ≤100μm) and concentrations (1%, 5%, 10% (wt %)) into bioink formulations containing gelatin (GEL) and pre-osteoblasts (MC3T3-E1) or human mesenchymal stem cells (hTERT-MSCs). In addition, we propose a minimalistic bioink formulation using GEL, DB particles and cells with an easy preparation process resulting in a high cell viability. The printability properties of the inks were evaluated. Additionally, rheological properties were determined with shear thinning and thixotropy tests. The bioprinted constructs were cultured for 28 days. The viability, proliferation, and osteogenic differentiation capacity of cells were evaluated using biochemical assays and fluorescence microscopy. The incorporation of DB particles enhanced cell proliferation and osteogenic differentiation capacity which might be due to the natural collagen and hydroxyapatite content of DB particles. Alkaline phosphatase activity is increased significantly by using DB particles, notably, without an osteogenic induction of the cells. Moreover, fluorescence images display pronounced cell-material interaction and cell attachment inside the constructs. With these promising results, the present minimalistic bioink formulation is envisioned as a potential candidate for bone tissue engineering as a clinically translatable material with straightforward preparation and high cell activity.
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Affiliation(s)
- Aylin Kara Özenler
- İzmir Institute of Technology, Department of Bioengineering, İzmir 35433, Turkey
- Institute of Biomaterials, Department of Material Science and Engineering, Friedrich-Alexander-University Erlangen-Nuremberg, Erlangen 91058, Germany
- Centre for Translational Bone, Joint and Soft Tissue Research, Technische Universität Dresden, Faculty of Medicine and University Hospital, Dresden, 01307, Germany
- Department of Orthopedics, University Medical Center Utrecht, Utrecht, 3584 CT, The Netherlands
| | - Thomas Distler
- Institute of Biomaterials, Department of Material Science and Engineering, Friedrich-Alexander-University Erlangen-Nuremberg, Erlangen 91058, Germany
| | - Ashwini Rahul Akkineni
- Centre for Translational Bone, Joint and Soft Tissue Research, Technische Universität Dresden, Faculty of Medicine and University Hospital, Dresden, 01307, Germany
| | - Funda Tihminlioglu
- İzmir Institute of Technology, Department of Chemical Engineering, İzmir 35433, Turkey
| | - Michael Gelinsky
- Centre for Translational Bone, Joint and Soft Tissue Research, Technische Universität Dresden, Faculty of Medicine and University Hospital, Dresden, 01307, Germany
| | - Aldo R Boccaccini
- Institute of Biomaterials, Department of Material Science and Engineering, Friedrich-Alexander-University Erlangen-Nuremberg, Erlangen 91058, Germany
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Ray S, Thormann U, Kramer I, Sommer U, Budak M, Schumacher M, Bernhardt A, Lode A, Kern C, Rohnke M, Heiss C, Lips KS, Gelinsky M, Alt V. Mesoporous Bioactive Glass-Incorporated Injectable Strontium-Containing Calcium Phosphate Cement Enhanced Osteoconductivity in a Critical-Sized Metaphyseal Defect in Osteoporotic Rats. Bioengineering (Basel) 2023; 10:1203. [PMID: 37892933 PMCID: PMC10604136 DOI: 10.3390/bioengineering10101203] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2023] [Revised: 09/28/2023] [Accepted: 10/11/2023] [Indexed: 10/29/2023] Open
Abstract
In this study, the in vitro and in vivo bone formation behavior of mesoporous bioactive glass (MBG) particles incorporated in a pasty strontium-containing calcium phosphate bone cement (pS100G10) was studied in a metaphyseal fracture-defect model in ovariectomized rats and compared to a plain pasty strontium-containing calcium phosphate bone cement (pS100) and control (empty defect) group, respectively. In vitro testing showed good cytocompatibility on human preosteoblasts and ongoing dissolution of the MBG component. Neither the released strontium nor the BMG particles from the pS100G10 had a negative influence on cell viability. Forty-five female Sprague-Dawley rats were randomly assigned to three different treatment groups: (1) pS100 (n = 15), (2) pS100G10 (n = 15), and (3) empty defect (n = 15). Twelve weeks after bilateral ovariectomy and multi-deficient diet, a 4 mm wedge-shaped fracture-defect was created at the metaphyseal area of the left femur in all animals. The originated fracture-defect was substituted with pS100 or pS100G10 or left empty. After six weeks, histomorphometrical analysis revealed a statistically significant higher bone volume/tissue volume ratio in the pS100G10 group compared to the pS100 (p = 0.03) and empty defect groups (p = 0.0001), indicating enhanced osteoconductivity with the incorporation of MBG. Immunohistochemistry revealed a significant decrease in the RANKL/OPG ratio for pS100 (p = 0.004) and pS100G10 (p = 0.003) compared to the empty defect group. pS100G10 showed a statistically higher expression of BMP-2. In addition, a statistically significant higher gene expression of alkaline phosphatase, osteoprotegerin, collagen1a1, collagen10a1 with a simultaneous decrease in RANKL, and carbonic anhydrase was seen in the pS100 and pS100G10 groups compared to the empty defect group. Mass spectrometric imaging by time-of-flight secondary ion mass spectrometry (ToF-SIMS) showed the release of Sr2+ ions from both pS100 and pS100G10, with a gradient into the interface region. ToF-SIMS imaging also revealed that resorption of the MBG particles allowed for new bone formation in cement pores. In summary, the current work shows better bone formation of the injectable pasty strontium-containing calcium phosphate bone cement with incorporated mesoporous bioactive glass compared to the bioactive-free bone cement and empty defects and can be considered for clinical application for osteopenic fracture defects in the future.
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Affiliation(s)
- Seemun Ray
- Laboratory of Experimental Trauma Surgery, Justus Liebig University, 35390 Giessen, Germany; (S.R.); (U.T.); (I.K.); (U.S.); (M.B.); (C.H.); (K.S.L.)
| | - Ulrich Thormann
- Laboratory of Experimental Trauma Surgery, Justus Liebig University, 35390 Giessen, Germany; (S.R.); (U.T.); (I.K.); (U.S.); (M.B.); (C.H.); (K.S.L.)
- Department of Trauma Surgery, University Hospital Giessen-Marburg GmbH, Campus Giessen, 35390 Giessen, Germany
| | - Inga Kramer
- Laboratory of Experimental Trauma Surgery, Justus Liebig University, 35390 Giessen, Germany; (S.R.); (U.T.); (I.K.); (U.S.); (M.B.); (C.H.); (K.S.L.)
| | - Ursula Sommer
- Laboratory of Experimental Trauma Surgery, Justus Liebig University, 35390 Giessen, Germany; (S.R.); (U.T.); (I.K.); (U.S.); (M.B.); (C.H.); (K.S.L.)
| | - Matthäus Budak
- Laboratory of Experimental Trauma Surgery, Justus Liebig University, 35390 Giessen, Germany; (S.R.); (U.T.); (I.K.); (U.S.); (M.B.); (C.H.); (K.S.L.)
- Department of Trauma Surgery, University Hospital Giessen-Marburg GmbH, Campus Giessen, 35390 Giessen, Germany
| | - Matthias Schumacher
- Centre for Translational Bone, Joint, and Soft Tissue Research, Faculty of Medicine, University Hospital Carl Gustav Carus, Technische Universität Dresden, 01307 Dresden, Germany; (M.S.); (A.B.); (A.L.); (M.G.)
| | - Anne Bernhardt
- Centre for Translational Bone, Joint, and Soft Tissue Research, Faculty of Medicine, University Hospital Carl Gustav Carus, Technische Universität Dresden, 01307 Dresden, Germany; (M.S.); (A.B.); (A.L.); (M.G.)
| | - Anja Lode
- Centre for Translational Bone, Joint, and Soft Tissue Research, Faculty of Medicine, University Hospital Carl Gustav Carus, Technische Universität Dresden, 01307 Dresden, Germany; (M.S.); (A.B.); (A.L.); (M.G.)
| | - Christine Kern
- Institute of Physical Chemistry, Justus Liebig University Giessen, 35392 Giessen, Germany; (C.K.); (M.R.)
| | - Marcus Rohnke
- Institute of Physical Chemistry, Justus Liebig University Giessen, 35392 Giessen, Germany; (C.K.); (M.R.)
| | - Christian Heiss
- Laboratory of Experimental Trauma Surgery, Justus Liebig University, 35390 Giessen, Germany; (S.R.); (U.T.); (I.K.); (U.S.); (M.B.); (C.H.); (K.S.L.)
- Department of Trauma Surgery, University Hospital Giessen-Marburg GmbH, Campus Giessen, 35390 Giessen, Germany
| | - Katrin S. Lips
- Laboratory of Experimental Trauma Surgery, Justus Liebig University, 35390 Giessen, Germany; (S.R.); (U.T.); (I.K.); (U.S.); (M.B.); (C.H.); (K.S.L.)
| | - Michael Gelinsky
- Centre for Translational Bone, Joint, and Soft Tissue Research, Faculty of Medicine, University Hospital Carl Gustav Carus, Technische Universität Dresden, 01307 Dresden, Germany; (M.S.); (A.B.); (A.L.); (M.G.)
| | - Volker Alt
- Laboratory of Experimental Trauma Surgery, Justus Liebig University, 35390 Giessen, Germany; (S.R.); (U.T.); (I.K.); (U.S.); (M.B.); (C.H.); (K.S.L.)
- Department of Trauma Surgery, University Hospital Giessen-Marburg GmbH, Campus Giessen, 35390 Giessen, Germany
- Department of Trauma Surgery, University Hospital Regensburg, 93053 Regensburg, Germany
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Richter RF, Vater C, Korn M, Ahlfeld T, Rauner M, Pradel W, Stadlinger B, Gelinsky M, Lode A, Korn P. Treatment of critical bone defects using calcium phosphate cement and mesoporous bioactive glass providing spatiotemporal drug delivery. Bioact Mater 2023; 28:402-419. [PMID: 37361564 PMCID: PMC10285454 DOI: 10.1016/j.bioactmat.2023.06.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2023] [Revised: 05/22/2023] [Accepted: 06/01/2023] [Indexed: 06/28/2023] Open
Abstract
Calcium phosphate cements (CPC) are currently widely used bone replacement materials with excellent bioactivity, but have considerable disadvantages like slow degradation. For critical-sized defects, however, an improved degradation is essential to match the tissue regeneration, especially in younger patients who are still growing. We demonstrate that a combination of CPC with mesoporous bioactive glass (MBG) particles led to an enhanced degradation in vitro and in a critical alveolar cleft defect in rats. Additionally, to support new bone formation the MBG was functionalized with hypoxia conditioned medium (HCM) derived from rat bone marrow stromal cells. HCM-functionalized scaffolds showed an improved cell proliferation and the highest formation of new bone volume. This highly flexible material system together with the drug delivery capacity is adaptable to patient specific needs and has great potential for clinical translation.
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Affiliation(s)
- Richard Frank Richter
- Centre for Translational Bone, Joint and Soft Tissue Research, University Hospital Carl Gustav Carus and Faculty of Medicine, Technische Universität Dresden, Dresden, Germany
| | - Corina Vater
- Centre for Translational Bone, Joint and Soft Tissue Research, University Hospital Carl Gustav Carus and Faculty of Medicine, Technische Universität Dresden, Dresden, Germany
| | - Margarete Korn
- Department of Oral and Maxillofacial Surgery, University Hospital Carl Gustav Carus, Technische Universität Dresden, Germany
| | - Tilman Ahlfeld
- Centre for Translational Bone, Joint and Soft Tissue Research, University Hospital Carl Gustav Carus and Faculty of Medicine, Technische Universität Dresden, Dresden, Germany
| | - Martina Rauner
- Department of Medicine III and Center for Healthy Aging, University Hospital Carl Gustav Carus, Technische Universität Dresden, Germany
| | - Winnie Pradel
- Department of Oral and Maxillofacial Surgery, University Hospital Carl Gustav Carus, Technische Universität Dresden, Germany
| | - Bernd Stadlinger
- Clinic of Cranio-Maxillofacial and Oral Surgery, Center of Dental Medicine, University of Zurich, Switzerland
| | - Michael Gelinsky
- Centre for Translational Bone, Joint and Soft Tissue Research, University Hospital Carl Gustav Carus and Faculty of Medicine, Technische Universität Dresden, Dresden, Germany
| | - Anja Lode
- Centre for Translational Bone, Joint and Soft Tissue Research, University Hospital Carl Gustav Carus and Faculty of Medicine, Technische Universität Dresden, Dresden, Germany
| | - Paula Korn
- Centre for Translational Bone, Joint and Soft Tissue Research, University Hospital Carl Gustav Carus and Faculty of Medicine, Technische Universität Dresden, Dresden, Germany
- Department of Oral and Maxillofacial Surgery, University Hospital Carl Gustav Carus, Technische Universität Dresden, Germany
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Ahlfeld T, Lode A, Placht AM, Fecht T, Wolfram T, Grom S, Hoess A, Vater C, Bräuer C, Heinemann S, Lauer G, Reinauer F, Gelinsky M. A comparative analysis of 3D printed scaffolds consisting of poly(lactic- co-glycolic) acid and different bioactive mineral fillers: aspects of degradation and cytocompatibility. Biomater Sci 2023; 11:5590-5604. [PMID: 37403758 DOI: 10.1039/d2bm02071h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/06/2023]
Abstract
Their excellent mechanical properties, degradability and suitability for processing by 3D printing technologies make the thermoplastic polylactic acid and its derivatives favourable candidates for biomaterial-based bone regeneration therapies. In this study, we investigated whether bioactive mineral fillers, which are known to promote bone healing based on their dissolution products, can be integrated into a poly(L-lactic-co-glycolic) acid (PLLA-PGA) matrix and how key characteristics of degradation and cytocompatibility are influenced. The polymer powder was mixed with particles of CaCO3, SrCO3, strontium-modified hydroxyapatite (SrHAp) or tricalcium phosphates (α-TCP, β-TCP) in a mass ratio of 90 : 10; the resulting composite materials have been successfully processed into scaffolds by the additive manufacturing method Arburg Plastic Freeforming (APF). Degradation of the composite scaffolds was investigated in terms of dimensional change, bioactivity, ion (calcium, phosphate, strontium) release/uptake and pH development during long-term (70 days) incubation. The mineral fillers influenced the degradation behavior of the scaffolds to varying degrees, with the calcium phosphate phases showing a clear buffer effect and an acceptable dimensional increase. The amount of 10 wt% SrCO3 or SrHAp particles did not appear to be appropriate to release a sufficient amount of strontium ions to exert a biological effect in vitro. Cell culture experiments with the human osteosarcoma cell line SAOS-2 and human dental pulp stem cells (hDPSC) indicated the high cytocompatibility of the composites: For all material groups cell spreading and complete colonization of the scaffolds over the culture period of 14 days as well as an increase of the specific alkaline phosphatase activity, typical for osteogenic differentiation, were observed.
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Affiliation(s)
- Tilman Ahlfeld
- Centre for Translational Bone, Joint and Soft Tissue Research, University Hospital Carl Gustav Carus and Faculty of Medicine, Technische Universität Dresden, Dresden, Germany.
| | - Anja Lode
- Centre for Translational Bone, Joint and Soft Tissue Research, University Hospital Carl Gustav Carus and Faculty of Medicine, Technische Universität Dresden, Dresden, Germany.
| | - Anna-Maria Placht
- Centre for Translational Bone, Joint and Soft Tissue Research, University Hospital Carl Gustav Carus and Faculty of Medicine, Technische Universität Dresden, Dresden, Germany.
| | - Tatjana Fecht
- Karl Leibinger Medizintechnik GmbH & Co. KG (KLS Martin Group), Germany
| | - Tobias Wolfram
- Karl Leibinger Medizintechnik GmbH & Co. KG (KLS Martin Group), Germany
| | - Stefanie Grom
- Karl Leibinger Medizintechnik GmbH & Co. KG (KLS Martin Group), Germany
| | | | - Corina Vater
- Centre for Translational Bone, Joint and Soft Tissue Research, University Hospital Carl Gustav Carus and Faculty of Medicine, Technische Universität Dresden, Dresden, Germany.
| | - Christian Bräuer
- Department of Oral and Maxillofacial Surgery, University Hospital Carl Gustav Carus and Faculty of Medicine, Technische Universität Dresden, Dresden, Germany
| | | | - Günter Lauer
- Department of Oral and Maxillofacial Surgery, University Hospital Carl Gustav Carus and Faculty of Medicine, Technische Universität Dresden, Dresden, Germany
| | - Frank Reinauer
- Karl Leibinger Medizintechnik GmbH & Co. KG (KLS Martin Group), Germany
| | - Michael Gelinsky
- Centre for Translational Bone, Joint and Soft Tissue Research, University Hospital Carl Gustav Carus and Faculty of Medicine, Technische Universität Dresden, Dresden, Germany.
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Liu SM, Chen JC, Huang SM, Lin SH, Chen WC. Enhanced Cell Osteogenic Differentiation in Alendronate Acid and Flufenamic Acid Drug-Impregnated Nanoparticles of Mesoporous Bioactive Glass Composite Calcium Phosphate Bone Cement In Vitro. Pharmaceuticals (Basel) 2023; 16:ph16050680. [PMID: 37242463 DOI: 10.3390/ph16050680] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2023] [Revised: 04/27/2023] [Accepted: 04/28/2023] [Indexed: 05/28/2023] Open
Abstract
This study aims to compare the anti-osteoporotic drugs alendronic acid (ALN) and flufenamic acid (FA) alone impregnate into nanoparticles of mesoporous bioactive glass (nMBG), which further composites calcium phosphate cement (CPC) and investigates their in vitro performance. The drug release, physicochemical properties, and biocompatibility of nMBG@CPC composite bone cement are tested, and the effect of the composites on improving the proliferation and differentiation efficiency of mouse precursor osteoblasts (D1 cells) is also investigated. Drug release shows that FA impregnates nMBG@CPC composite, a large amount of FA is released rapidly within 8 h, gradually reaching a stable release within 12 h, followed by a slow and sustained release within 14 days, and then reaches a plateau within 21 days. The release phenomenon confirms that the drug-impregnated nBMG@CPC composite bone cement effectively achieves slow drug delivery. The working time and setting time of each composite are within 4-10 min and 10-20 min, respectively, meeting the operational requirements of clinical applications. The addition of nMBG nanoparticles in the CPC matrix did not prevent the aggregation phenomenon under microstructural observation, thus resulting in a decrease in the strength of the nMBG@CPC composite. However, after 24 h of immersed reaction, the strength of each 5 wt.% nMBG impregnated with different concentrations of FA and ALN is still greater than 30 MPa, which is higher than the general trabecular bone strength. The drug-impregnated nMBG@CPC composites did not hinder the product formation and exhibit biocompatibility. Based on the proliferation and mineralization of D1 cells, the combination of nMBG with abundant FA and ALN in CPC is not conducive to the proliferation of D1 cells. However, when D1 cells are contact cultured for 21 days, alkaline phosphatase (ALP) enzyme activity shows higher ALP secretion from drug-impregnated nMBG@CPC composites than drug-free composites. Accordingly, this study confirms that nMBG can effectively impregnate the anti-osteoporosis drugs FA and ALN, and enhance the mineralization ability of osteoblasts. Furthermore, drug-impregnated nMBG applications can be used alone or in combination with CPC as a new option for osteoporotic bone-filling surgery.
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Affiliation(s)
- Shih-Ming Liu
- Advanced Medical Devices and Composites Laboratory, Department of Fiber and Composite Materials, Feng Chia University, Taichung 407, Taiwan
| | - Jian-Chih Chen
- Advanced Medical Devices and Composites Laboratory, Department of Fiber and Composite Materials, Feng Chia University, Taichung 407, Taiwan
- Department of Orthopedics, Faculty of Medical School, College of Medicine, Kaohsiung Medical University, Kaohsiung 807, Taiwan
- Department of Orthopedics, Kaohsiung Medical University Hospital, Kaohsiung 807, Taiwan
| | - Ssu-Meng Huang
- Advanced Medical Devices and Composites Laboratory, Department of Fiber and Composite Materials, Feng Chia University, Taichung 407, Taiwan
| | - Shang-Hong Lin
- Advanced Medical Devices and Composites Laboratory, Department of Fiber and Composite Materials, Feng Chia University, Taichung 407, Taiwan
| | - Wen-Cheng Chen
- Advanced Medical Devices and Composites Laboratory, Department of Fiber and Composite Materials, Feng Chia University, Taichung 407, Taiwan
- Department of Fragrance and Cosmetic Science, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 807, Taiwan
- Dental Medical Devices and Materials Research Center, College of Dental Medicine, Kaohsiung Medical University, Kaohsiung 807, Taiwan
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8
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Richter RF, Ahlfeld T, Gelinsky M, Lode A. Composites consisting of calcium phosphate cements and mesoporous bioactive glasses as a 3D plottable drug delivery system. Acta Biomater 2023; 156:146-157. [PMID: 35063708 DOI: 10.1016/j.actbio.2022.01.034] [Citation(s) in RCA: 13] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2021] [Revised: 12/18/2021] [Accepted: 01/14/2022] [Indexed: 01/18/2023]
Abstract
Calcium phosphate cements (CPC) and mesoporous bioactive glasses (MBG) are two well studied biomaterial groups widely under investigation on their applicability to treat bone defects in orthopaedics and maxillofacial surgery. Recently the extrusion properties of CPC-MBG composites using a pasty CPC based on a hydrophobic carrier-liquid were studied in our group demonstrating that such composites are suitable for low temperature 3D plotting. Based on this work, we show in this study that by variation of the MBG content in the composite the degradation of the final scaffolds can be influenced. Furthermore, by modifying the cement phase and/or the MBG with therapeutically active ions like strontium, the released ion concentration can be varied over a wide range. In a second step the MBG was functionalized exploiting the high specific surface area of the glass as a carrier system for proteins like lysozyme or grow factors. We developed a protocol that allows the incorporation of protein-laden MBG in CPC pastes without impairing the extrudability of the CPC-MBG composites. Additionally, we found that released proteins from pure MBG or 3D plotted composite-scaffolds maintained their biological activity. Therefore, the combination of CPC and MBG allows the creation of a highly flexible composite system making it a promising candidate for bone tissue engineering. STATEMENT OF SIGNIFICANCE: Calcium phosphate cements and mesoporous bioactive glasses are two promising degradable biomaterials for the regenerative treatment of bone defects. The combination of both materials to a 3D printable composite enables the creation of implants with patient specific geometry. By varying the composition of the composite, the degradation behaviour can be influenced and especially the release of therapeutically active ions is tailorable over a wide range. We demonstrated this for strontium, as it has been shown to stimulate bone formation. Moreover, the bioactive glass can be used as a carrier system for drugs or growth factors and we show the successful combination of such functionalised glass particles and a cement paste without affecting the printability.
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Affiliation(s)
- Richard Frank Richter
- Centre for Translational Bone, Joint and Soft Tissue Research, University Hospital Carl Gustav Carus and Faculty of Medicine, Technische Universität Dresden, Dresden, Germany
| | - Tilman Ahlfeld
- Centre for Translational Bone, Joint and Soft Tissue Research, University Hospital Carl Gustav Carus and Faculty of Medicine, Technische Universität Dresden, Dresden, Germany
| | - Michael Gelinsky
- Centre for Translational Bone, Joint and Soft Tissue Research, University Hospital Carl Gustav Carus and Faculty of Medicine, Technische Universität Dresden, Dresden, Germany.
| | - Anja Lode
- Centre for Translational Bone, Joint and Soft Tissue Research, University Hospital Carl Gustav Carus and Faculty of Medicine, Technische Universität Dresden, Dresden, Germany.
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9
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Alternative Geometries for 3D Bioprinting of Calcium Phosphate Cement as Bone Substitute. Biomedicines 2022; 10:biomedicines10123242. [PMID: 36551998 PMCID: PMC9775344 DOI: 10.3390/biomedicines10123242] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2022] [Revised: 12/06/2022] [Accepted: 12/07/2022] [Indexed: 12/15/2022] Open
Abstract
In the literature, many studies have described the 3D printing of ceramic-based scaffolds (e.g., printing with calcium phosphate cement) in the form of linear structures with layer rotations of 90°, although no right angles can be found in the human body. Therefore, this work focuses on the adaptation of biological shapes, including a layer rotation of only 1°. Sample shapes were printed with calcium phosphate cement using a 3D Bioplotter from EnvisionTec. Both straight and wavy spokes were printed in a round structure with 12 layers. Depending on the strand diameter (200 and 250 µm needle inner diameter) and strand arrangement, maximum failure loads of 444.86 ± 169.39 N for samples without subsequent setting in PBS up to 1280.88 ± 538.66 N after setting in PBS could be achieved.
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10
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Dankó T, Petővári G, Raffay R, Sztankovics D, Moldvai D, Vetlényi E, Krencz I, Rókusz A, Sipos K, Visnovitz T, Pápay J, Sebestyén A. Characterisation of 3D Bioprinted Human Breast Cancer Model for In Vitro Drug and Metabolic Targeting. Int J Mol Sci 2022; 23:ijms23137444. [PMID: 35806452 PMCID: PMC9267600 DOI: 10.3390/ijms23137444] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2022] [Revised: 06/26/2022] [Accepted: 06/27/2022] [Indexed: 02/07/2023] Open
Abstract
Monolayer cultures, the less standard three-dimensional (3D) culturing systems, and xenografts are the main tools used in current basic and drug development studies of cancer research. The aim of biofabrication is to design and construct a more representative in vivo 3D environment, replacing two-dimensional (2D) cell cultures. Here, we aim to provide a complex comparative analysis of 2D and 3D spheroid culturing, and 3D bioprinted and xenografted breast cancer models. We established a protocol to produce alginate-based hydrogel bioink for 3D bioprinting and the long-term culturing of tumour cells in vitro. Cell proliferation and tumourigenicity were assessed with various tests. Additionally, the results of rapamycin, doxycycline and doxorubicin monotreatments and combinations were also compared. The sensitivity and protein expression profile of 3D bioprinted tissue-mimetic scaffolds showed the highest similarity to the less drug-sensitive xenograft models. Several metabolic protein expressions were examined, and the in situ tissue heterogeneity representing the characteristics of human breast cancers was also verified in 3D bioprinted and cultured tissue-mimetic structures. Our results provide additional steps in the direction of representing in vivo 3D situations in in vitro studies. Future use of these models could help to reduce the number of animal experiments and increase the success rate of clinical phase trials.
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Affiliation(s)
- Titanilla Dankó
- Department of Pathology and Experimental Cancer Research, Semmelweis University, Üllői út 26, 1085 Budapest, Hungary; (T.D.); (G.P.); (R.R.); (D.S.); (D.M.); (E.V.); (I.K.); (A.R.); (K.S.); (J.P.)
| | - Gábor Petővári
- Department of Pathology and Experimental Cancer Research, Semmelweis University, Üllői út 26, 1085 Budapest, Hungary; (T.D.); (G.P.); (R.R.); (D.S.); (D.M.); (E.V.); (I.K.); (A.R.); (K.S.); (J.P.)
| | - Regina Raffay
- Department of Pathology and Experimental Cancer Research, Semmelweis University, Üllői út 26, 1085 Budapest, Hungary; (T.D.); (G.P.); (R.R.); (D.S.); (D.M.); (E.V.); (I.K.); (A.R.); (K.S.); (J.P.)
| | - Dániel Sztankovics
- Department of Pathology and Experimental Cancer Research, Semmelweis University, Üllői út 26, 1085 Budapest, Hungary; (T.D.); (G.P.); (R.R.); (D.S.); (D.M.); (E.V.); (I.K.); (A.R.); (K.S.); (J.P.)
| | - Dorottya Moldvai
- Department of Pathology and Experimental Cancer Research, Semmelweis University, Üllői út 26, 1085 Budapest, Hungary; (T.D.); (G.P.); (R.R.); (D.S.); (D.M.); (E.V.); (I.K.); (A.R.); (K.S.); (J.P.)
| | - Enikő Vetlényi
- Department of Pathology and Experimental Cancer Research, Semmelweis University, Üllői út 26, 1085 Budapest, Hungary; (T.D.); (G.P.); (R.R.); (D.S.); (D.M.); (E.V.); (I.K.); (A.R.); (K.S.); (J.P.)
| | - Ildikó Krencz
- Department of Pathology and Experimental Cancer Research, Semmelweis University, Üllői út 26, 1085 Budapest, Hungary; (T.D.); (G.P.); (R.R.); (D.S.); (D.M.); (E.V.); (I.K.); (A.R.); (K.S.); (J.P.)
| | - András Rókusz
- Department of Pathology and Experimental Cancer Research, Semmelweis University, Üllői út 26, 1085 Budapest, Hungary; (T.D.); (G.P.); (R.R.); (D.S.); (D.M.); (E.V.); (I.K.); (A.R.); (K.S.); (J.P.)
| | - Krisztina Sipos
- Department of Pathology and Experimental Cancer Research, Semmelweis University, Üllői út 26, 1085 Budapest, Hungary; (T.D.); (G.P.); (R.R.); (D.S.); (D.M.); (E.V.); (I.K.); (A.R.); (K.S.); (J.P.)
| | - Tamás Visnovitz
- Department of Genetics, Cell- and Immunobiology, Semmelweis University, Nagyvárad tér 4, 1089 Budapest, Hungary;
- Department of Plant Physiology and Molecular Plant Biology, ELTE Eötvös Loránd University, Pázmány Péter Sétány 1/c, 1117 Budapest, Hungary
| | - Judit Pápay
- Department of Pathology and Experimental Cancer Research, Semmelweis University, Üllői út 26, 1085 Budapest, Hungary; (T.D.); (G.P.); (R.R.); (D.S.); (D.M.); (E.V.); (I.K.); (A.R.); (K.S.); (J.P.)
| | - Anna Sebestyén
- Department of Pathology and Experimental Cancer Research, Semmelweis University, Üllői út 26, 1085 Budapest, Hungary; (T.D.); (G.P.); (R.R.); (D.S.); (D.M.); (E.V.); (I.K.); (A.R.); (K.S.); (J.P.)
- Correspondence: or
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11
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Liu J, Yao Q, Peng Y, Dong Z, Tang L, Su X, Liu L, Chen C, Ramalingam M, Cheng L. Identification of Small-Molecule Inhibitors for Osteosarcoma Targeted Therapy: Synchronizing In Silico, In Vitro, and In Vivo Analyses. Front Bioeng Biotechnol 2022; 10:921107. [PMID: 35814015 PMCID: PMC9260275 DOI: 10.3389/fbioe.2022.921107] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2022] [Accepted: 05/16/2022] [Indexed: 11/18/2022] Open
Abstract
Objective: The study aimed to explore a new approach for the treatment of osteosarcoma through combining biomaterials with next-generation small molecule–based targeted therapy. Methods: The model of osteosarcoma was established by 4-hydroxyaminoquinoline 1-oxide (4-HAQO) in mice while the collagen-thermosensitive hydrogel–calcium phosphate (CTC) biocomposites were prepared, and the small molecule inhibitors were virtually screened and synthesized. Then, for the osteosarcoma cell line, MG-63 cells were used to validate our bioinformatic findings in vitro, and the mouse osteosarcoma models were treated by combing CTC composites and small-molecule inhibitors after debridement. Results: Five compounds, namely, ZINC150338698, ZINC14768621, ZINC4217203, ZINC169291448, and ZINC85537017, were found in the ZINK database. Finally, ZINC150338698 was selected for chemical synthesis and experimental verification. The results of the MTT assay and Hoechst staining showed that the small-molecule inhibitor ZINC150338698 could significantly induce MG-63 cell death. Furthermore, CTC composites and ZINC150338698 could repair the bone defects well after the debridement of osteosarcoma. In addition, the biomaterials and small-molecule inhibitors have good biocompatibility and biosafety. Conclusion: Our findings not only offer systems biology approach-based drug target identification but also provide new clues for developing novel treatment methods for future osteosarcoma research.
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Affiliation(s)
- Juan Liu
- School of Basic Medical Sciences, Affiliated Hospital, School of Mechanical Engineering, Chengdu University, Chengdu, China
| | - Qi Yao
- School of Basic Medical Sciences, Affiliated Hospital, School of Mechanical Engineering, Chengdu University, Chengdu, China
| | - Yu Peng
- School of Basic Medical Sciences, Affiliated Hospital, School of Mechanical Engineering, Chengdu University, Chengdu, China
| | - Zhihong Dong
- School of Basic Medical Sciences, Affiliated Hospital, School of Mechanical Engineering, Chengdu University, Chengdu, China
| | - Lu Tang
- School of Basic Medical Sciences, Affiliated Hospital, School of Mechanical Engineering, Chengdu University, Chengdu, China
| | - Xiaoyu Su
- School of Basic Medical Sciences, Affiliated Hospital, School of Mechanical Engineering, Chengdu University, Chengdu, China
| | - Lishuang Liu
- School of Basic Medical Sciences, Affiliated Hospital, School of Mechanical Engineering, Chengdu University, Chengdu, China
| | - Cheng Chen
- School of Basic Medical Sciences, Affiliated Hospital, School of Mechanical Engineering, Chengdu University, Chengdu, China
| | - Murugan Ramalingam
- School of Basic Medical Sciences, Affiliated Hospital, School of Mechanical Engineering, Chengdu University, Chengdu, China
- Institute of Tissue Regeneration Engineering, Department of Nanobiomedical Science, BK21 NBM Global Research Center for Regenerative Medicine, Dankook University, Cheonan, South Korea
- *Correspondence: Murugan Ramalingam, ; Lijia Cheng,
| | - Lijia Cheng
- School of Basic Medical Sciences, Affiliated Hospital, School of Mechanical Engineering, Chengdu University, Chengdu, China
- *Correspondence: Murugan Ramalingam, ; Lijia Cheng,
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12
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3D Plotting of Calcium Phosphate Cement and Melt Electrowriting of Polycaprolactone Microfibers in One Scaffold: A Hybrid Additive Manufacturing Process. J Funct Biomater 2022; 13:jfb13020075. [PMID: 35735931 PMCID: PMC9225379 DOI: 10.3390/jfb13020075] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2022] [Revised: 05/31/2022] [Accepted: 06/05/2022] [Indexed: 11/17/2022] Open
Abstract
The fabrication of patient-specific scaffolds for bone substitutes is possible through extrusion-based 3D printing of calcium phosphate cements (CPC) which allows the generation of structures with a high degree of customization and interconnected porosity. Given the brittleness of this clinically approved material, the stability of open-porous scaffolds cannot always be secured. Herein, a multi-technological approach allowed the simultaneous combination of CPC printing with melt electrowriting (MEW) of polycaprolactone (PCL) microfibers in an alternating, tunable design in one automated fabrication process. The hybrid CPC+PCL scaffolds with varying CPC strand distance (800-2000 µm) and integrated PCL fibers featured a strong CPC to PCL interface. While no adverse effect on mechanical stiffness was detected by the PCL-supported scaffold design; the microfiber integration led to an improved integrity. The pore distance between CPC strands was gradually increased to identify at which critical CPC porosity the microfibers would have a significant impact on pore bridging behavior and growth of seeded cells. At a CPC strand distance of 1600 µm, after 2 weeks of cultivation, the incorporation of PCL fibers led to pore coverage by a human mesenchymal stem cell line and an elevated proliferation level of murine pre-osteoblasts. The integrated fabrication approach allows versatile design adjustments on different levels.
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13
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Guduric V, Wieckhusen J, Bernhardt A, Ahlfeld T, Lode A, Wu C, Gelinsky M. Composite Bioinks With Mesoporous Bioactive Glasses-A Critical Evaluation of Results Obtained by In Vitro Experiments. Front Bioeng Biotechnol 2022; 9:767256. [PMID: 35087798 PMCID: PMC8787041 DOI: 10.3389/fbioe.2021.767256] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2021] [Accepted: 12/15/2021] [Indexed: 12/16/2022] Open
Abstract
Besides osteoconductivity and a high degradation rate, mesoporous bioactive glasses (MBGs) are specific for their highly ordered channel structure and high specific surface area, making them suitable as drug and/or growth factor delivery systems. On the other hand, the mesoporous channel structure and MBG composition can have an effect on common cell evaluation assays, leading to inconclusive results. This effect is especially important when MBG is mixed in composite bioinks, together with cells. Additionally, the hydrogel component of the ink can influence the degradation of MBG, leading to different ion releases, which can additionally affect the analyses. Hence, our aim here was to show how the MBG structure and composition influence common cell viability and differentiation assays when calcium (Ca)- or magnesium (Mg)-containing glass is part of an alginate-based composite bioink. We suggested pre-labeling of cells with DiI prior to bioprinting and staining with calcein-AM to allow identification of metabolically active cells expressing signals in both green and red channels, allowing the use of fluorescence imaging for cell viability evaluations in the presence of high amounts (7 wt %) of MBGs. The release and uptake of ions during degradation of CaMBG and MgMBG were significantly changed by alginate in the composite bioinks, as confirmed by higher release and uptake from bulk glasses. Additionally, we detected a burst release of Mg2+ from composites only after 24 h of incubation. Furthermore, we demonstrated that released ions and the mesoporous channel structure affect the measurement of lactate dehydrogenase (LDH) and alkaline phosphatase activity (ALP) in bioprinted composite scaffolds. Measured LDH activity was significantly decreased in the presence of CaMBG. On the other hand, the presence of MgMBG induced increased signal measured for the ALP. Taken together, our findings show how composite bioinks containing MBGs can interfere with common analyses, obtaining misleading results.
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Affiliation(s)
- Vera Guduric
- Centre for Translational Bone, Joint and Soft Tissue Research, University Hospital Carl Gustav Carus and Faculty of Medicine, Technische Universität, Dresden, Germany
| | - Johannes Wieckhusen
- Centre for Translational Bone, Joint and Soft Tissue Research, University Hospital Carl Gustav Carus and Faculty of Medicine, Technische Universität, Dresden, Germany
| | - Anne Bernhardt
- Centre for Translational Bone, Joint and Soft Tissue Research, University Hospital Carl Gustav Carus and Faculty of Medicine, Technische Universität, Dresden, Germany
| | - Tilman Ahlfeld
- Centre for Translational Bone, Joint and Soft Tissue Research, University Hospital Carl Gustav Carus and Faculty of Medicine, Technische Universität, Dresden, Germany
| | - Anja Lode
- Centre for Translational Bone, Joint and Soft Tissue Research, University Hospital Carl Gustav Carus and Faculty of Medicine, Technische Universität, Dresden, Germany
| | - Chengtie Wu
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, China
| | - Michael Gelinsky
- Centre for Translational Bone, Joint and Soft Tissue Research, University Hospital Carl Gustav Carus and Faculty of Medicine, Technische Universität, Dresden, Germany
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14
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Muallah D, Sembdner P, Holtzhausen S, Meissner H, Hutsky A, Ellmann D, Assmann A, Schulz MC, Lauer G, Kroschwald LM. Adapting the Pore Size of Individual, 3D-Printed CPC Scaffolds in Maxillofacial Surgery. J Clin Med 2021; 10:jcm10122654. [PMID: 34208695 PMCID: PMC8233728 DOI: 10.3390/jcm10122654] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2021] [Revised: 06/11/2021] [Accepted: 06/15/2021] [Indexed: 12/26/2022] Open
Abstract
Three dimensional (3D) printing allows additive manufacturing of patient specific scaffolds with varying pore size and geometry. Such porous scaffolds, made of 3D-printable bone-like calcium phosphate cement (CPC), are suitable for bone augmentation due to their benefit for osteogenesis. Their pores allow blood-, bone- and stem cells to migrate, colonize and finally integrate into the adjacent tissue. Furthermore, the pore size affects the scaffold’s stability. Since scaffolds in maxillofacial surgery have to withstand high forces within the jaw, adequate mechanical properties are of high clinical importance. Although many studies have investigated CPC for bone augmentation, the ideal porosity for specific indications has not been defined yet. We investigated 3D printed CPC cubes with increasing pore sizes and different printing orientations regarding cell migration and mechanical properties in comparison to commercially available bone substitutes. Furthermore, by investigating clinical cases, the scaffolds’ designs were adapted to resemble the in vivo conditions as accurately as possible. Our findings suggest that the pore size of CPC scaffolds for bone augmentation in maxillofacial surgery necessarily needs to be adapted to the surgical site. Scaffolds for sites that are not exposed to high forces, such as the sinus floor, should be printed with a pore size of 750 µm to benefit from enhanced cell infiltration. In contrast, for areas exposed to high pressures, such as the lateral mandible, scaffolds should be manufactured with a pore size of 490 µm to guarantee adequate cell migration and in order to withstand the high forces during the chewing process.
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Affiliation(s)
- David Muallah
- Department of Oral and Maxillofacial Surgery, Faculty of Medicine “Carl Gustav Carus”, Technische Universität Dresden, Fetscherstraße 74, 01307 Dresden, Germany; (D.M.); (G.L.)
| | - Philipp Sembdner
- Department of Mechanical Engineering, Institute of Machine Elements and Machine Design, Technische Universität Dresden, 01062 Dresden, Germany; (P.S.); (S.H.)
| | - Stefan Holtzhausen
- Department of Mechanical Engineering, Institute of Machine Elements and Machine Design, Technische Universität Dresden, 01062 Dresden, Germany; (P.S.); (S.H.)
| | - Heike Meissner
- Department of Prosthetic Dentistry, University Hospital “Carl Gustav Carus”, Technische Universität Dresden, Fetscherstraße 74, 01307 Dresden, Germany;
| | - André Hutsky
- Organical CAD/CAM, Ruwersteig 43, 12681 Berlin, Germany; (A.H.); (D.E.)
| | - Daniel Ellmann
- Organical CAD/CAM, Ruwersteig 43, 12681 Berlin, Germany; (A.H.); (D.E.)
| | - Antje Assmann
- Zahntechnik Schönberg, Altseidnitz 19, 01277 Dresden, Germany;
| | - Matthias C. Schulz
- Department of Oral and Maxillofacial Surgery, University Hospital Tübingen, Eberhard Karls Universität Tübingen, Osianderstraße 2-8, 72076 Tübingen, Germany;
| | - Günter Lauer
- Department of Oral and Maxillofacial Surgery, Faculty of Medicine “Carl Gustav Carus”, Technische Universität Dresden, Fetscherstraße 74, 01307 Dresden, Germany; (D.M.); (G.L.)
| | - Lysann M. Kroschwald
- Department of Oral and Maxillofacial Surgery, Faculty of Medicine “Carl Gustav Carus”, Technische Universität Dresden, Fetscherstraße 74, 01307 Dresden, Germany; (D.M.); (G.L.)
- Centre for Translational Bone, Joint and Soft Tissue Research, University Hospital “Carl Gustav Carus”, Technische Universität Dresden, Fetscherstraße 74, 01307 Dresden, Germany
- Correspondence:
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15
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Bagnol R, Sprecher C, Peroglio M, Chevalier J, Mahou R, Büchler P, Richards G, Eglin D. Coaxial micro-extrusion of a calcium phosphate ink with aqueous solvents improves printing stability, structure fidelity and mechanical properties. Acta Biomater 2021; 125:322-332. [PMID: 33631396 DOI: 10.1016/j.actbio.2021.02.022] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2020] [Revised: 02/13/2021] [Accepted: 02/16/2021] [Indexed: 01/11/2023]
Abstract
Micro-extrusion-based 3D printing of complex geometrical and porous calcium phosphate (CaP) can improve treatment of bone defects through the production of personalized bone substitutes. However, achieving printing and post-printing shape stabilities for the efficient fabrication and application of rapid hardening protocol are still challenging. In this work, the coaxial printing of a self-setting CaP cement with water and ethanol mixtures aiming to increase the ink yield stress upon extrusion and the stability of fabricated structures was explored. Printing height of overhang structure was doubled when aqueous solvents were used and a 2 log increase of the stiffness was achieved post-printing. A standard and fast steam sterilization protocol applied as hardening step on the coaxial printed CaP cement (CPC) ink resulted in constructs with 4 to 5 times higher compressive moduli in comparison to extrusion process in the absence of solvent. This improved mechanical performance is likely due to rapid CPC setting, preventing cracks formation during hardening process. Thus, coaxial micro-extrusion-based 3D printing of a CPC ink with aqueous solvent enhances printability and allows the use of the widespread steam sterilization cycle as a standalone post-processing technique for production of 3D printed personalized CaP bone substitutes. STATEMENT OF SIGNIFICANCE: Coaxial micro-extrusion-based 3D printing of a self-setting CaP cement with water:ethanol mixtures increased the ink yield stress upon extrusion and the stability of fabricated structures. Printing height of overhang structure was doubled when aqueous solvents were used, and a 2 orders of magnitude log increase of the stiffness was achieved post-printing. A fast hardening step consisting of a standard steam sterilization was applied. Four to 5 times higher compressive moduli was obtained for hardened coaxially printed constructs. This improved mechanical performance is likely due to rapid CPC setting in the coaxial printing, preventing cracks formation during hardening process.
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Affiliation(s)
- Romain Bagnol
- AO Research Institute Davos, Clavadelerstrasse 8, 7270 Davos Platz, Switzerland; Department of Biomaterials Science and Technology, Faculty of Science and Technology, University of Twente, Drienerlolaan 5, 7522 NB Enschede, the Netherlands
| | - Christoph Sprecher
- AO Research Institute Davos, Clavadelerstrasse 8, 7270 Davos Platz, Switzerland
| | - Marianna Peroglio
- AO Research Institute Davos, Clavadelerstrasse 8, 7270 Davos Platz, Switzerland
| | - Jerome Chevalier
- University of Lyon, INSA-Lyon, CNRS, MATEIS UMR 5510, F-69621, Villeurbanne, France
| | | | - Philippe Büchler
- ARTORG Center for Biomedical Engineering Research, University of Bern, Bern, Switzerland
| | - Geoff Richards
- AO Research Institute Davos, Clavadelerstrasse 8, 7270 Davos Platz, Switzerland
| | - David Eglin
- AO Research Institute Davos, Clavadelerstrasse 8, 7270 Davos Platz, Switzerland; Department of Biomaterials Science and Technology, Faculty of Science and Technology, University of Twente, Drienerlolaan 5, 7522 NB Enschede, the Netherlands.
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16
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Guduric V, Belton N, Richter RF, Bernhardt A, Spangenberg J, Wu C, Lode A, Gelinsky M. Tailorable Zinc-Substituted Mesoporous Bioactive Glass/Alginate-Methylcellulose Composite Bioinks. MATERIALS (BASEL, SWITZERLAND) 2021; 14:1225. [PMID: 33807758 PMCID: PMC7961332 DOI: 10.3390/ma14051225] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/03/2021] [Revised: 02/26/2021] [Accepted: 03/03/2021] [Indexed: 12/17/2022]
Abstract
Bioactive glasses have been used for bone regeneration applications thanks to their excellent osteoconductivity, an osteostimulatory effect, and high degradation rate, releasing biologically active ions. Besides these properties, mesoporous bioactive glasses (MBG) are specific for their highly ordered mesoporous channel structure and high specific surface area, making them suitable for drug and growth factor delivery. In the present study, calcium (Ca) (15 mol%) in MBG was partially and fully substituted with zinc (Zn), known for its osteogenic and antimicrobial properties. Different MBG were synthesized, containing 0, 5, 10, or 15 mol% of Zn. Up to 7 wt.% of Zn-containing MBG could be mixed into an alginate-methylcellulose blend (algMC) while maintaining rheological properties suitable for 3D printing of scaffolds with sufficient shape fidelity. The suitability of these composites for bioprinting applications has been demonstrated with immortalized human mesenchymal stem cells. Uptake of Ca and phosphorus (P) (phosphate) ions by composite scaffolds was observed, while the released concentration of Zn2+ corresponded to the initial amount of this ion in prepared glasses, suggesting that it can be controlled at the MBG synthesis step. The study introduces a tailorable bioprintable material system suitable for bone tissue engineering applications.
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Affiliation(s)
- Vera Guduric
- Centre for Translational Bone, Joint and Soft Tissue Research, University Hospital Carl Gustav Carus and Faculty of Medicine, Technische Universität Dresden, 01307 Dresden, Germany; (V.G.); (N.B.); (R.F.R.); (A.B.); (J.S.); (A.L.)
| | - Niall Belton
- Centre for Translational Bone, Joint and Soft Tissue Research, University Hospital Carl Gustav Carus and Faculty of Medicine, Technische Universität Dresden, 01307 Dresden, Germany; (V.G.); (N.B.); (R.F.R.); (A.B.); (J.S.); (A.L.)
| | - Richard Frank Richter
- Centre for Translational Bone, Joint and Soft Tissue Research, University Hospital Carl Gustav Carus and Faculty of Medicine, Technische Universität Dresden, 01307 Dresden, Germany; (V.G.); (N.B.); (R.F.R.); (A.B.); (J.S.); (A.L.)
| | - Anne Bernhardt
- Centre for Translational Bone, Joint and Soft Tissue Research, University Hospital Carl Gustav Carus and Faculty of Medicine, Technische Universität Dresden, 01307 Dresden, Germany; (V.G.); (N.B.); (R.F.R.); (A.B.); (J.S.); (A.L.)
| | - Janina Spangenberg
- Centre for Translational Bone, Joint and Soft Tissue Research, University Hospital Carl Gustav Carus and Faculty of Medicine, Technische Universität Dresden, 01307 Dresden, Germany; (V.G.); (N.B.); (R.F.R.); (A.B.); (J.S.); (A.L.)
| | - Chengtie Wu
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Dingxi Road 1295, Shanghai 200050, China;
| | - Anja Lode
- Centre for Translational Bone, Joint and Soft Tissue Research, University Hospital Carl Gustav Carus and Faculty of Medicine, Technische Universität Dresden, 01307 Dresden, Germany; (V.G.); (N.B.); (R.F.R.); (A.B.); (J.S.); (A.L.)
| | - Michael Gelinsky
- Centre for Translational Bone, Joint and Soft Tissue Research, University Hospital Carl Gustav Carus and Faculty of Medicine, Technische Universität Dresden, 01307 Dresden, Germany; (V.G.); (N.B.); (R.F.R.); (A.B.); (J.S.); (A.L.)
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17
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Tavares MT, Gaspar VM, Monteiro MV, Farinha JPS, Baleizao C, Mano J. GelMA/bioactive silica nanocomposite bioinks for stem cell osteogenic differentiation. Biofabrication 2021; 13. [PMID: 33455952 DOI: 10.1088/1758-5090/abdc86] [Citation(s) in RCA: 42] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2020] [Accepted: 01/15/2021] [Indexed: 01/12/2023]
Abstract
Leveraging 3D bioprinting for processing stem cell-laden biomaterials has unlocked a tremendous potential for fabricating living 3D constructs for bone tissue engineering. Even though several bioinks developed to date display suitable physicochemical properties for stem cell seeding and proliferation, they generally lack the nanosized minerals present in native bone bioarchitecture. To enable the bottom-up fabrication of biomimetic 3D constructs for bioinstructing stem cells pro-osteogenic differentiation, herein we developed multi-bioactive nanocomposite bioinks that combine the organic and inorganic building blocks of bone. For the organic component gelatin methacrylate (GelMA), a photocrosslinkable denaturated collagen derivative used for 3D bioprinting was selected due to its rheological properties display of cell adhesion moities to which bone tissue precursors such as human bone marrow derived mesenchymal stem cells (hBM-MSCs) can attach to. The inorganic building block was formulated by incorporating mesoporous silica nanoparticles functionalized with calcium, phosphate and dexamethasone (MSNCaPDex), which previously proven to induce osteogenic differentiation. The newly formulated photocrosslinkable nanocomposite GelMA bioink incorporating MSNCaPDex nanoparticles and laden with hBM-MSCs was sucessfully processed into a 3D bioprintable construct with structural fidelity and well dispersed nanoparticles throughout the hydrogel matrix. These nanocomposite constructs could induce the deposition of apatite in vitro, thus showing attractive bioactivity properties. Viability and differentiation studies showed that hBM-MSCs remained viable and exhibited osteogenic differentiation biomarkers when incorporated in GelMA/MSNCaPDex constructs and without requiring further biochemical nor mechanical stimuli. Overall, our nanocomposite bioink has demonstrated excellent processability via extrusion bioprinting into osteogenic constructs with potential application in bone tissue repair and regeneration.
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Affiliation(s)
- Márcia T Tavares
- Centro de Química Estrutural and Department of Chemical Engineering, Universidade de Lisboa Instituto Superior Técnico, Complexo Interdisciplinar Instituto Superior Técnico Av. Rovisco Pais 1, Lisboa, Lisboa, 1049-001, PORTUGAL
| | - Vítor M Gaspar
- CICECO - Aveiro Institute of Materials, Universidade de Aveiro Departamento de Quimica, Complexo de Laboratórios Tecnológicos Campus Universitário de Santiago, Aveiro, Portugal, 3810-193, PORTUGAL
| | - Maria V Monteiro
- CICECO - Aveiro Institute of Materials, Universidade de Aveiro Departamento de Quimica, Complexo de Laboratórios Tecnológicos Campus Universitário de Santiago Aveiro, Portugal, Aveiro, Portugal, 3810-193, PORTUGAL
| | - José Paulo S Farinha
- Centro de Química Estrutural and Department of Chemical Engineering, Universidade de Lisboa Instituto Superior Técnico, Complexo Interdisciplinar Instituto Superior Técnico Av. Rovisco Pais 1, Lisboa, Lisboa, 1049-001, PORTUGAL
| | - Carlos Baleizao
- Centro de Química Estrutural and Department of Chemical Engineering, Universidade de Lisboa, Complexo Interdisciplinar Instituto Superior Técnico Av. Rovisco Pais 1, Lisboa, 1049-001, PORTUGAL
| | - João Mano
- CICECO - Aveiro Institute of Materials, Universidade de Aveiro Departamento de Quimica, CICECO - Complexo de Laboratórios Tecnológicos Campus Universitário de Santiago, Aveiro, Portugal, 3810-193, PORTUGAL
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18
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Xie Y, Liu J, Cai S, Bao X, Li Q, Xu G. Setting Characteristics and High Compressive Strength of an Anti-washout, Injectable Calcium Phosphate Cement Combined with Thermosensitive Hydrogel. MATERIALS (BASEL, SWITZERLAND) 2020; 13:E5779. [PMID: 33348902 PMCID: PMC7766756 DOI: 10.3390/ma13245779] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/11/2020] [Revised: 12/09/2020] [Accepted: 12/11/2020] [Indexed: 12/11/2022]
Abstract
In this work, a thermosensitive poly(D,L-lactide-co-glycolide)-poly(ethylene glycol)-poly(D,L-lactide-co-glycolide) (PLGA-PEG-PLGA) hydrogel was introduced into calcium phosphate cement (CPC) to enhance the anti-washout property of CPC. The effects of the hydrogel on the setting time, injectability, anti-washout property and compressive strength of CPC were thoroughly investigated. The results showed that the hydrogel significantly increased the injectability and anti-washout property of CPC, meanwhile maintained the setting time with an acceptable range. Moreover, the hydrogel improved the initial compressive strength of CPC. The composite cement with 20% v/v hydrogel in the liquid phase showed fine crystals of hydration product, a more compact microstructure and lower porosity compared with control CPC. The analysis of X-ray diffraction (XRD), infrared spectroscopy (FTIR) and X-ray photoelectron spectroscopy (XPS) indicated that suitable volume ratio of hydrogel (20% v/v) in the setting liquid of CPC could promote the formation of hydroxyapatite in the early hydration period. The degradation behavior of the cement was characterized by immersion tests in simulated body fluid. The hydrogel had no adverse effect on the degradation rate of CPC over the immersion period of 23 days. This study indicated that incorporating PLGA-PEG-PLGA hydrogel could be a promising strategy to reinforce the handing properties and initial compressive strength of calcium phosphate cement.
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Affiliation(s)
- Yao Xie
- Key Laboratory for Advanced Ceramics and Machining Technology of Ministry of Education, Tianjin University, Tianjin 300072, China; (Y.X.); (Q.L.)
| | - Jia Liu
- Department of Orthopedic Surgery, Spine Center, Naval Medical University, Shanghai 200003, China; (J.L.); (X.B.)
| | - Shu Cai
- Key Laboratory for Advanced Ceramics and Machining Technology of Ministry of Education, Tianjin University, Tianjin 300072, China; (Y.X.); (Q.L.)
| | - Xiaogang Bao
- Department of Orthopedic Surgery, Spine Center, Naval Medical University, Shanghai 200003, China; (J.L.); (X.B.)
| | - Qianqian Li
- Key Laboratory for Advanced Ceramics and Machining Technology of Ministry of Education, Tianjin University, Tianjin 300072, China; (Y.X.); (Q.L.)
| | - Guohua Xu
- Department of Orthopedic Surgery, Spine Center, Naval Medical University, Shanghai 200003, China; (J.L.); (X.B.)
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19
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Chen Y, Li W, Zhang C, Wu Z, Liu J. Recent Developments of Biomaterials for Additive Manufacturing of Bone Scaffolds. Adv Healthc Mater 2020; 9:e2000724. [PMID: 32743960 DOI: 10.1002/adhm.202000724] [Citation(s) in RCA: 48] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2020] [Revised: 07/09/2020] [Indexed: 12/11/2022]
Abstract
Recent years have witnessed surging demand for bone repair/regeneration implants due to the increasing number of bone defects caused by trauma, cancer, infection, and arthritis worldwide. In addition to bone autografts and allografts, biomaterial substitutes have been widely used in clinical practice. Personalized implants with precise and personalized control of shape, porosity, composition, surface chemistry, and mechanical properties will greatly facilitate the regeneration of bone tissue and satiate the clinical needs. Additive manufacturing (AM) techniques, also known as 3D printing, are drawing fast growing attention in the fabrication of implants or scaffolding materials due to their capability of manufacturing complex and irregularly shaped scaffolds in repairing bone defects in clinical practice. This review aims to provide a comprehensive overview of recent progress in the development of materials and techniques used in the additive manufacturing of bone scaffolds. In addition, clinical application, pre-clinical trials and future prospects of AM based bone implants are also summarized and discussed.
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Affiliation(s)
- You Chen
- School of Biomedical Engineering, Sun Yat-sen University, Guangzhou, Guangdong, 510006, China
| | - Weilin Li
- School of Biomedical Engineering, Sun Yat-sen University, Guangzhou, Guangdong, 510006, China
| | - Chao Zhang
- School of Biomedical Engineering, Sun Yat-sen University, Guangzhou, Guangdong, 510006, China
| | - Zhaoying Wu
- School of Biomedical Engineering, Sun Yat-sen University, Guangzhou, Guangdong, 510006, China
| | - Jie Liu
- School of Biomedical Engineering, Sun Yat-sen University, Guangzhou, Guangdong, 510006, China
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20
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Kilian D, Ahlfeld T, Akkineni AR, Bernhardt A, Gelinsky M, Lode A. 3D Bioprinting of osteochondral tissue substitutes - in vitro-chondrogenesis in multi-layered mineralized constructs. Sci Rep 2020; 10:8277. [PMID: 32427838 PMCID: PMC7237416 DOI: 10.1038/s41598-020-65050-9] [Citation(s) in RCA: 60] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2020] [Accepted: 04/22/2020] [Indexed: 12/13/2022] Open
Abstract
For the generation of multi-layered full thickness osteochondral tissue substitutes with an individual geometry based on clinical imaging data, combined extrusion-based 3D printing (3D plotting) of a bioink laden with primary chondrocytes and a mineralized biomaterial phase was introduced. A pasty calcium phosphate cement (CPC) and a bioink based on alginate-methylcellulose (algMC) - both are biocompatible and allow 3D plotting with high shape fidelity - were applied in monophasic and combinatory design to recreate osteochondral tissue layers. The capability of cells reacting to chondrogenic biochemical stimuli inside the algMC-based 3D hydrogel matrix was assessed. Towards combined osteochondral constructs, the chondrogenic fate in the presence of CPC in co-fabricated and biphasic mineralized pattern was evaluated. Majority of expanded and algMC-encapsulated cells survived the plotting process and the cultivation period, and were able to undergo redifferentiation in the provided environment to produce their respective extracellular matrix (ECM) components (i.e. sulphated glycosaminoglycans, collagen type II), examined after 3 weeks. The presence of a mineralized zone as located in the physiological calcified cartilage region suspected to interfere with chondrogenesis, was found to support chondrogenic ECM production by altering the ionic concentrations of calcium and phosphorus in in vitro culture conditions.
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Affiliation(s)
- David Kilian
- Centre for Translational Bone, Joint and Soft Tissue Research, Faculty of Medicine and University Hospital Carl Gustav Carus, TU Dresden, Dresden, Germany
| | - Tilman Ahlfeld
- Centre for Translational Bone, Joint and Soft Tissue Research, Faculty of Medicine and University Hospital Carl Gustav Carus, TU Dresden, Dresden, Germany
| | - Ashwini Rahul Akkineni
- Centre for Translational Bone, Joint and Soft Tissue Research, Faculty of Medicine and University Hospital Carl Gustav Carus, TU Dresden, Dresden, Germany
| | - Anne Bernhardt
- Centre for Translational Bone, Joint and Soft Tissue Research, Faculty of Medicine and University Hospital Carl Gustav Carus, TU Dresden, Dresden, Germany
| | - Michael Gelinsky
- Centre for Translational Bone, Joint and Soft Tissue Research, Faculty of Medicine and University Hospital Carl Gustav Carus, TU Dresden, Dresden, Germany
| | - Anja Lode
- Centre for Translational Bone, Joint and Soft Tissue Research, Faculty of Medicine and University Hospital Carl Gustav Carus, TU Dresden, Dresden, Germany.
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21
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Korn P, Ahlfeld T, Lahmeyer F, Kilian D, Sembdner P, Stelzer R, Pradel W, Franke A, Rauner M, Range U, Stadlinger B, Lode A, Lauer G, Gelinsky M. 3D Printing of Bone Grafts for Cleft Alveolar Osteoplasty - In vivo Evaluation in a Preclinical Model. Front Bioeng Biotechnol 2020; 8:217. [PMID: 32269989 PMCID: PMC7109264 DOI: 10.3389/fbioe.2020.00217] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2019] [Accepted: 03/04/2020] [Indexed: 12/12/2022] Open
Abstract
One of the most common hereditary craniofacial anomalies in humans are cleft lip and cleft alveolar bone with or without cleft palate. Current clinical practice, the augmentation of the persisting alveolar bone defect by using autologous bone grafts, has considerable disadvantages motivating to an intensive search for alternatives. We developed a novel therapy concept based on 3D printing of biodegradable calcium phosphate-based materials and integration of osteogenic cells allowing fabrication of patient-specific, tissue-engineered bone grafts. Objective of the present study was the in vivo evaluation of implants in a rat alveolar cleft model. Scaffolds were designed according to the defect's geometry with two different pore designs (60° and 30° rotated layer orientation) and produced by extrusion-based 3D plotting of a pasty calcium phosphate cement. The scaffolds filled into the artificial bone defect in the palate of adult Lewis rats, showing a good support. Half of the scaffolds were colonized with rat mesenchymal stromal cells (rMSC) prior to implantation. After 6 and 12 weeks, remaining defect width and bone formation were quantified histologically and by microCT. The results revealed excellent osteoconductive properties of the scaffolds, a significant influence of the pore geometry (60° > 30°), but no enhanced defect healing by pre-colonization with rMSC.
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Affiliation(s)
- Paula Korn
- Department of Oral and Maxillofacial Surgery, Charité – Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany
| | - Tilman Ahlfeld
- Centre for Translational Bone, Joint and Soft Tissue Research, University Hospital “Carl Gustav Carus”, Faculty of Medicine, Technische Universität Dresden, Dresden, Germany
| | - Franziska Lahmeyer
- Department of Oral and Maxillofacial Surgery, Faculty of Medicine “Carl Gustav Carus”, Technische Universität Dresden, Dresden, Germany
| | - David Kilian
- Centre for Translational Bone, Joint and Soft Tissue Research, University Hospital “Carl Gustav Carus”, Faculty of Medicine, Technische Universität Dresden, Dresden, Germany
| | - Philipp Sembdner
- Institute of Machine Elements and Machine Design, Technische Universität Dresden, Dresden, Germany
| | - Ralph Stelzer
- Institute of Machine Elements and Machine Design, Technische Universität Dresden, Dresden, Germany
| | - Winnie Pradel
- Department of Oral and Maxillofacial Surgery, Faculty of Medicine “Carl Gustav Carus”, Technische Universität Dresden, Dresden, Germany
| | - Adrian Franke
- Department of Oral and Maxillofacial Surgery, Faculty of Medicine “Carl Gustav Carus”, Technische Universität Dresden, Dresden, Germany
| | - Martina Rauner
- Division of Endocrinology, Diabetes, and Bone Diseases, Department of Medicine III and Center for Healthy Aging, Faculty of Medicine “Carl Gustav Carus”, Technische Universität Dresden, Dresden, Germany
| | - Ursula Range
- Institute for Medical Informatics and Biometry, Faculty of Medicine “Carl Gustav Carus”, Technische Universität Dresden, Dresden, Germany
| | - Bernd Stadlinger
- Clinic of Cranio-Maxillofacial and Oral Surgery, University Hospital Zurich, University of Zurich, Zurich, Switzerland
| | - Anja Lode
- Centre for Translational Bone, Joint and Soft Tissue Research, University Hospital “Carl Gustav Carus”, Faculty of Medicine, Technische Universität Dresden, Dresden, Germany
| | - Günter Lauer
- Department of Oral and Maxillofacial Surgery, Faculty of Medicine “Carl Gustav Carus”, Technische Universität Dresden, Dresden, Germany
| | - Michael Gelinsky
- Centre for Translational Bone, Joint and Soft Tissue Research, University Hospital “Carl Gustav Carus”, Faculty of Medicine, Technische Universität Dresden, Dresden, Germany
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