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Nicolas T, Ségolène R, Thierry R, Maeva D, Joelle V, Arnaud P, Ludmila B, Pierre W, Pierre C, Baptiste C. Multiparametric influence of 3D-printed organo-mineral scaffolds on bone regeneration. Sci Rep 2024; 14:20848. [PMID: 39242756 PMCID: PMC11379694 DOI: 10.1038/s41598-024-71698-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2023] [Accepted: 08/30/2024] [Indexed: 09/09/2024] Open
Abstract
The development of synthetic bone substitutes that equal or exceed the efficacy of autologous graft remains challenging. In this study, a rat calvarial defect model was used as a reference to investigate the influence of composition and architecture of 3D-printed cement, with or without bioactives, on tissue regeneration. Printable cement pastes were formulated by combining hyaluronic acid and cement precursors. Cementitious scaffolds were printed with 3 different patterns. After 7 weeks of implantation with or without bone marrow, multiparametric qualitative and quantitative assessments were performed using µCT, SEM, and histology. None of the set-up strategies was as efficient as autologous cancellous bone graft to repair calvarial defects. Nonetheless, the presence of scaffold improved the skull vault closure, particularly when the scaffold was soaked in total bone marrow before implantation. No significant effect of scaffold macro-architecture was observed on tissue mineralization. Magnesium phosphate-based scaffolds (MgP) seemed to induce higher bone formation than their calcium-phosphate-based counterparts. They also displayed a quicker biodegradation and sparse remaining material was found after 7 weeks of implantation. Although further improvements are required to reach clinical settings, this study demonstrated the potential of organo-mineral cements for bone regeneration and highlighted the peculiar properties of MgP-based cements.
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Affiliation(s)
- Touya Nicolas
- Regenerative Medicine and Skeleton, RMeS UMR 1229, Nantes Université, Oniris, CHU Nantes, INSERM, 44000, Nantes, France
| | - Reiss Ségolène
- Regenerative Medicine and Skeleton, RMeS UMR 1229, Nantes Université, Oniris, CHU Nantes, INSERM, 44000, Nantes, France
| | - Rouillon Thierry
- Regenerative Medicine and Skeleton, RMeS UMR 1229, Nantes Université, Oniris, CHU Nantes, INSERM, 44000, Nantes, France
| | - Dutilleul Maeva
- Regenerative Medicine and Skeleton, RMeS UMR 1229, Nantes Université, Oniris, CHU Nantes, INSERM, 44000, Nantes, France
| | - Veziers Joelle
- Regenerative Medicine and Skeleton, RMeS UMR 1229, Nantes Université, Oniris, CHU Nantes, INSERM, 44000, Nantes, France
| | - Pare Arnaud
- Regenerative Medicine and Skeleton, RMeS UMR 1229, Nantes Université, Oniris, CHU Nantes, INSERM, 44000, Nantes, France
| | - Brasset Ludmila
- Regenerative Medicine and Skeleton, RMeS UMR 1229, Nantes Université, Oniris, CHU Nantes, INSERM, 44000, Nantes, France
| | - Weiss Pierre
- Regenerative Medicine and Skeleton, RMeS UMR 1229, Nantes Université, Oniris, CHU Nantes, INSERM, 44000, Nantes, France
| | - Corre Pierre
- Regenerative Medicine and Skeleton, RMeS UMR 1229, Nantes Université, Oniris, CHU Nantes, INSERM, 44000, Nantes, France
| | - Charbonnier Baptiste
- Regenerative Medicine and Skeleton, RMeS UMR 1229, Nantes Université, Oniris, CHU Nantes, INSERM, 44000, Nantes, France.
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Kim YR, Yun EB, Ryu DI, Kim BH, Kim JS, Kim YS, Kang JH, Cho EH, Koh JT, Lim HP, Park C, Lee BN. The potential bone regeneration effects of leptin- and osteolectin-coated 3D-printed PCL scaffolds: an in vivostudy. Biomed Mater 2024; 19:045008. [PMID: 38688311 DOI: 10.1088/1748-605x/ad45d7] [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: 11/29/2023] [Accepted: 04/30/2024] [Indexed: 05/02/2024]
Abstract
This study investigated the effectiveness of bone regeneration upon the application of leptin and osteolectin to a three-dimensional (3D) printed poly(ϵ-caprolactone) (PCL) scaffold. A fused deposition modeling 3D bioprinter was used to fabricate scaffolds with a diameter of 4.5 mm, a height of 0.5 mm, and a pore size of 420-520 nm using PCL (molecular weight: 43 000). After amination of the scaffold surface for leptin and osteolectin adhesion, the experimental groups were divided into the PCL scaffold (control), the aminated PCL (PCL/Amine) scaffold, the leptin-coated PCL (PCL/Leptin) scaffold, and the osteolectin-coated PCL (PCL/Osteo) scaffold. Next, the water-soluble tetrazolium salt-1 (WST-1) assay was used to assess cell viability. All groups exhibited cell viability rates of >100%. Female 7-week-old Sprague-Dawley rats were used forin vivoexperiments. Calvarial defects were introduced on the rats' skulls using a 5.5 mm trephine bur. The rats were divided into the PCL (control), PCL/Leptin, and PCL/Osteo scaffold groups. The scaffolds were then inserted into the calvarial defect areas, and the rats were sacrificed after 8-weeks to analyze the defect area. Micro-CT analysis indicated that the leptin- and osteolectin-coated scaffolds exhibited significantly higher bone regeneration. Histological analysis revealed new bone and blood vessels in the calvarial defect area. These findings indicate that the 3D-printed PCL scaffold allows for patient-customized fabrication as well as the easy application of proteins like leptin and osteolectin. Moreover, leptin and osteolectin did not show cytotoxicity and exhibited higher bone regeneration potential than the existing scaffold.
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Affiliation(s)
- Young-Ran Kim
- Department of Biomedical Engineering, College of Dentistry, Chonnam National University, Gwangju, Republic of Korea
| | - Eun-Byeol Yun
- College of Dentistry, Chonnam National University, Gwangju, Republic of Korea
| | - Dam-In Ryu
- College of Dentistry, Chonnam National University, Gwangju, Republic of Korea
| | - Bo-Hye Kim
- Department of Veterinary Anatomy and Animal Behavior, College of Veterinary Medicine and BK21 FOUR Program, Chonnam National University, Gwangju, Republic of Korea
| | - Joong-Seon Kim
- Department of Veterinary Anatomy and Animal Behavior, College of Veterinary Medicine and BK21 FOUR Program, Chonnam National University, Gwangju, Republic of Korea
| | - Ye-Seul Kim
- Department of Prosthodontics, College of Dentistry, Chonnam National University, Gwangju, Republic of Korea
| | - Jin-Ho Kang
- Department of Prosthodontics, College of Dentistry, Chonnam National University, Gwangju, Republic of Korea
| | - Eun-Hyo Cho
- Department of Conservative Dentistry, College of Dentistry, Chonnam National University, Gwangju, Republic of Korea
| | - Jeong-Tae Koh
- Department of Pharmacology and Dental Therapeutics, College of Dentistry, Chonnam National University, Gwangju, Republic of Korea
| | - Hyun-Pil Lim
- Department of Prosthodontics, College of Dentistry, Chonnam National University, Gwangju, Republic of Korea
| | - Chan Park
- Department of Prosthodontics, College of Dentistry, Chonnam National University, Gwangju, Republic of Korea
| | - Bin-Na Lee
- Department of Conservative Dentistry, College of Dentistry, Chonnam National University, Gwangju, Republic of Korea
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Alonso-Fernández I, Haugen HJ, Nogueira LP, López-Álvarez M, González P, López-Peña M, González-Cantalapiedra A, Muñoz-Guzón F. Enhanced Bone Healing in Critical-Sized Rabbit Femoral Defects: Impact of Helical and Alternate Scaffold Architectures. Polymers (Basel) 2024; 16:1243. [PMID: 38732711 PMCID: PMC11085737 DOI: 10.3390/polym16091243] [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: 03/11/2024] [Revised: 04/20/2024] [Accepted: 04/26/2024] [Indexed: 05/13/2024] Open
Abstract
This study investigates the effect of scaffold architecture on bone regeneration, focusing on 3D-printed polylactic acid-bioceramic calcium phosphate (PLA-bioCaP) composite scaffolds in rabbit femoral condyle critical defects. We explored two distinct scaffold designs to assess their influence on bone healing and scaffold performance. Structures with alternate (0°/90°) and helical (0°/45°/90°/135°/180°) laydown patterns were manufactured with a 3D printer using a fused deposition modeling technique. The scaffolds were meticulously characterized for pore size, strut thickness, porosity, pore accessibility, and mechanical properties. The in vivo efficacy of these scaffolds was evaluated using a femoral condyle critical defect model in eight skeletally mature New Zealand White rabbits. Then, the results were analyzed micro-tomographically, histologically, and histomorphometrically. Our findings indicate that both scaffold architectures are biocompatible and support bone formation. The helical scaffolds, characterized by larger pore sizes and higher porosity, demonstrated significantly greater bone regeneration than the alternate structures. However, their lower mechanical strength presented limitations for use in load-bearing sites.
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Affiliation(s)
- Iván Alonso-Fernández
- Anatomy, Animal Production and Veterinary Clinical Sciences Department, Veterinary Faculty, Universidade de Santiago de Compostela, Campus Universitario s/n, 27002 Lugo, Spain; (M.L.-P.); (A.G.-C.); (F.M.-G.)
| | - Håvard Jostein Haugen
- Department of Biomaterials, Institute of Clinical Dentistry, Faculty of Dentistry, University of Oslo, 0317 Oslo, Norway; (H.J.H.); (L.P.N.)
| | - Liebert Parreiras Nogueira
- Department of Biomaterials, Institute of Clinical Dentistry, Faculty of Dentistry, University of Oslo, 0317 Oslo, Norway; (H.J.H.); (L.P.N.)
| | - Miriam López-Álvarez
- Centro de Investigación en Tecnologías, Energía y Procesos Industriales (CINTECX), Universidade de Vigo, Grupo de Novos Materiais, 36310 Vigo, Spain; (M.L.-Á.); (P.G.)
- Galicia Sur Health Research Institute (IIS Galicia Sur), SERGAS-UVIGO, 36213 Vigo, Spain
| | - Pío González
- Centro de Investigación en Tecnologías, Energía y Procesos Industriales (CINTECX), Universidade de Vigo, Grupo de Novos Materiais, 36310 Vigo, Spain; (M.L.-Á.); (P.G.)
- Galicia Sur Health Research Institute (IIS Galicia Sur), SERGAS-UVIGO, 36213 Vigo, Spain
| | - Mónica López-Peña
- Anatomy, Animal Production and Veterinary Clinical Sciences Department, Veterinary Faculty, Universidade de Santiago de Compostela, Campus Universitario s/n, 27002 Lugo, Spain; (M.L.-P.); (A.G.-C.); (F.M.-G.)
| | - Antonio González-Cantalapiedra
- Anatomy, Animal Production and Veterinary Clinical Sciences Department, Veterinary Faculty, Universidade de Santiago de Compostela, Campus Universitario s/n, 27002 Lugo, Spain; (M.L.-P.); (A.G.-C.); (F.M.-G.)
| | - Fernando Muñoz-Guzón
- Anatomy, Animal Production and Veterinary Clinical Sciences Department, Veterinary Faculty, Universidade de Santiago de Compostela, Campus Universitario s/n, 27002 Lugo, Spain; (M.L.-P.); (A.G.-C.); (F.M.-G.)
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Unagolla JM, Gaihre B, Jayasuriya AC. In Vitro and In Vivo Evaluation of 3D Printed Poly(Ethylene Glycol) Dimethacrylate-Based Photocurable Hydrogel Platform for Bone Tissue Engineering. Macromol Biosci 2024; 24:e2300414. [PMID: 38035771 PMCID: PMC11018466 DOI: 10.1002/mabi.202300414] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2023] [Revised: 10/31/2023] [Indexed: 12/02/2023]
Abstract
This study focuses to develop a unique hybrid hydrogel bioink formulation that incorporates poly(ethylene glycol) dimethacrylate (PEGDMA), gelatin (Gel), and methylcellulose (MC). This formulation achieves the necessary viscosity for extrusion-based three-dimensional (3D) printing of scaffolds intended for bone regeneration. After thorough optimization of the hybrid bioink system with Gel, three distinct scaffold groups are investigated in vitro: 0%, 3%, and 6% (w/v) Gel. These scaffold groups are examined for their morphology, mechanical strength, biodegradation, in vitro cell proliferation and differentiation, and in vivo bone formation using a rat cranial defect model. Among these scaffold compositions, the 3% Gel scaffold exhibits the most favorable characteristics, prompting further evaluation as a rat mesenchymal stem cell (rMSC) carrier in a critical-size cranial defect within a Lewis rat model. The compressive strength of all three scaffold groups range between 1 and 2 MPa. Notably, the inclusion of Gel in the scaffolds leads to enhanced bioactivity and cell adhesion. The Gel-containing scaffolds notably amplify osteogenic differentiation, as evidenced by alkaline phosphatase (ALP) and Western blot analyses. The in vivo results, as depicted by microcomputed tomography, showcase augmented osteogenesis within cell-seeded scaffolds, thus validating this innovative PEGDMA-based scaffold system as a promising candidate for cranial bone defect healing.
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Affiliation(s)
- Janitha M. Unagolla
- Biomedical Engineering Program, Colleges of Engineering and Medicine, University of Toledo, Toledo, OH 43606, USA
| | - Bipin Gaihre
- Biomedical Engineering Program, Colleges of Engineering and Medicine, University of Toledo, Toledo, OH 43606, USA
| | - Ambalangodage C. Jayasuriya
- Biomedical Engineering Program, Colleges of Engineering and Medicine, University of Toledo, Toledo, OH 43606, USA
- Department of Orthopedic Surgery, College of Medicine and Life Sciences, 3000 Arlington Avenue, University of Toledo, Toledo, OH 43614, USA
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5
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Putra NE, Moosabeiki V, Leeflang MA, Zhou J, Zadpoor AA. Biodegradation-affected fatigue behavior of extrusion-based additively manufactured porous iron-manganese scaffolds. Acta Biomater 2024; 178:340-351. [PMID: 38395100 DOI: 10.1016/j.actbio.2024.02.024] [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: 11/29/2023] [Revised: 02/13/2024] [Accepted: 02/14/2024] [Indexed: 02/25/2024]
Abstract
Additively manufactured (AM) biodegradable porous iron-manganese (FeMn) alloys have recently been developed as promising bone-substituting biomaterials. However, their corrosion fatigue behavior has not yet been studied. Here, we present the first study on the corrosion fatigue behavior of an extrusion-based AM porous Fe35Mn alloy under cyclic loading in air and in the revised simulated body fluid (r-SBF), including the fatigue crack morphology and distribution in the porous structure. We hypothesized that the fatigue behavior of the architected AM Fe35Mn alloy would be strongly affected by the simultaneous biodegradation process. We defined the endurance limit as the maximum stress at which the scaffolds could undergo 3 million loading cycles without failure. The endurance limit of the scaffolds was determined to be 90 % of their yield strength in air, but only 60 % in r-SBF. No notable crack formation in the specimens tested in air was observed even after loading up to 90 % of their yield strength. As for the specimens tested in r-SBF, however, cracks formed in the specimens subjected to loads exceeding 60 % of their yield strength appeared to initiate on the periphery and propagate toward the internal struts. Altogether, the results show that the extrusion-based AM porous Fe35Mn alloy is capable of tolerating up to 60 % of its yield strength for up to 3 million cycles, which corresponds to 1.5 years of use of load-bearing implants subjected to repetitive gait cycles. The fatigue performance of the alloy thus further enhances its potential for trabecular bone substitution subjected to cyclic compressive loading. STATEMENT OF SIGNIFICANCE: Fatigue behavior of extrusion-based AM porous Fe35Mn alloy scaffolds in air and revised simulated body fluid was studied. The Fe35Mn alloy scaffolds endured 90 % of their yield strength for up to 3 × 106 loading cycles in air. Moreover, the scaffolds tolerated 3 × 106 loading cycles at 60 % of their yield strength in revised simulated body fluid. The Fe35Mn alloy scaffolds exhibited a capacity of withstanding 1.5-year physiological loading when used as bone implants.
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Affiliation(s)
- Niko E Putra
- Department of Biomechanical Engineering, Faculty of Mechanical Engineering, Delft University of Technology, the Netherlands.
| | - Vahid Moosabeiki
- Department of Biomechanical Engineering, Faculty of Mechanical Engineering, Delft University of Technology, the Netherlands
| | - Marius A Leeflang
- Department of Biomechanical Engineering, Faculty of Mechanical Engineering, Delft University of Technology, the Netherlands
| | - Jie Zhou
- Department of Biomechanical Engineering, Faculty of Mechanical Engineering, Delft University of Technology, the Netherlands
| | - Amir A Zadpoor
- Department of Biomechanical Engineering, Faculty of Mechanical Engineering, Delft University of Technology, the Netherlands
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6
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Amaral VA, de Souza JF, Alves TFR, de Oliveira Junior JM, Severino P, Aranha N, Souto EB, Chaud MV. Psidium guajava L. phenolic compound-reinforced lamellar scaffold for tracheal tissue engineering. Drug Deliv Transl Res 2024; 14:62-79. [PMID: 37566362 PMCID: PMC10746760 DOI: 10.1007/s13346-023-01381-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/16/2023] [Indexed: 08/12/2023]
Abstract
The aim of this work was to develop a dense lamellar scaffold, as a biomimetic material with potential applications in the regeneration of tracheal tissue after surgical tumor resection. The scaffolds were produced by plastic compression technique, exploiting the use of total phenolic compounds (TPC) from Psidium guajava Linn as a potential cross-linking agent in a polymeric mixture based on collagen (COL), silk fibroin (SF), and polyethylene glycol 400 (PEG 400). Fourier transform infrared spectroscopy (FTIR) and differential scanning calorimetry (DSC) confirmed the chemical interactions between the polymers and the cross-linking of TPC between COL and SF. Morphological analyses showed scaffolds with porosity, interconnectivity, and a porous surface structure with a gyroid-like geometry. The analysis of the anisotropic degree resulted in anisotropic structures (0.1% TFC and 0.3% TFC) and an isotropic structure (0.5% TFC). In the mechanical properties, it was evidenced greater resistance for the 0.3% TFC formulation. The addition of TPC percentages did not result in a significant difference (p > 0.05) in swelling capacity and disintegration rate. The results confirmed that TPC were able to modulate the morphological, morphometric, and mechanical properties of scaffolds. Thus, this study describes a potential new material to improve the regeneration of major tracheal structures after surgical tumor removal.
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Affiliation(s)
- Venâncio A Amaral
- Laboratory of Biomaterials and Nanotechnology, University of Sorocaba, UNISO, Raposo Tavares, Sorocaba, São Paulo, 18023-000, Brazil
| | - Juliana Ferreira de Souza
- Laboratory of Biomaterials and Nanotechnology, University of Sorocaba, UNISO, Raposo Tavares, Sorocaba, São Paulo, 18023-000, Brazil
| | - Thais F R Alves
- Laboratory of Biomaterials and Nanotechnology, University of Sorocaba, UNISO, Raposo Tavares, Sorocaba, São Paulo, 18023-000, Brazil
| | - José M de Oliveira Junior
- Laboratory of Applied Nuclear Physics, University of Sorocaba, UNISO, Raposo Tavares, Sorocaba, São Paulo, 18023-000, Brazil
| | - Patrícia Severino
- Institute of Technology and Research, Tiradentes University, Murilo Dantas, Aracaju, Sergipe, 300, Brazil
| | - Norberto Aranha
- Laboratory of Biomaterials and Nanotechnology, University of Sorocaba, UNISO, Raposo Tavares, Sorocaba, São Paulo, 18023-000, Brazil
- College of Engineering of Bioprocess and Biotechnology, University of Sorocaba, UNISO, Raposo Tavares, Sorocaba, 18023-000, Brazil
| | - Eliana B Souto
- Laboratory of Pharmaceutical Technology, Department of Drug Sciences, Faculty of Pharmacy, University of Porto, Jorge de Viterbo Ferreira, 4050-313, Porto, Portugal.
- MEDTECH, Department of Drug Sciences, Faculty of Pharmacy, University of Porto, 4050-313, Porto, Portugal.
- Associate Laboratory i4HB-Institute for Health and Bioeconomy, Faculty of Pharmacy, University of Porto, 4050-313, Porto, Portugal.
| | - Marco V Chaud
- Laboratory of Biomaterials and Nanotechnology, University of Sorocaba, UNISO, Raposo Tavares, Sorocaba, São Paulo, 18023-000, Brazil.
- College of Engineering of Bioprocess and Biotechnology, University of Sorocaba, UNISO, Raposo Tavares, Sorocaba, 18023-000, Brazil.
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Garot C, Schoffit S, Monfoulet C, Machillot P, Deroy C, Roques S, Vial J, Vollaire J, Renard M, Ghanem H, El-Hafci H, Decambron A, Josserand V, Bordenave L, Bettega G, Durand M, Manassero M, Viateau V, Logeart-Avramoglou D, Picart C. 3D-Printed Osteoinductive Polymeric Scaffolds with Optimized Architecture to Repair a Sheep Metatarsal Critical-Size Bone Defect. Adv Healthc Mater 2023; 12:e2301692. [PMID: 37655491 DOI: 10.1002/adhm.202301692] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2023] [Revised: 08/10/2023] [Indexed: 09/02/2023]
Abstract
The reconstruction of critical-size bone defects in long bones remains a challenge for clinicians. A new osteoinductive medical device is developed here for long bone repair by combining a 3D-printed architectured cylindrical scaffold made of clinical-grade polylactic acid (PLA) with a polyelectrolyte film coating delivering the osteogenic bone morphogenetic protein 2 (BMP-2). This film-coated scaffold is used to repair a sheep metatarsal 25-mm long critical-size bone defect. In vitro and in vivo biocompatibility of the film-coated PLA material is proved according to ISO standards. Scaffold geometry is found to influence BMP-2 incorporation. Bone regeneration is followed using X-ray scans, µCT scans, and histology. It is shown that scaffold internal geometry, notably pore shape, influenced bone regeneration, which is homogenous longitudinally. Scaffolds with cubic pores of ≈870 µm and a low BMP-2 dose of ≈120 µg cm-3 induce the best bone regeneration without any adverse effects. The visual score given by clinicians during animal follow-up is found to be an easy way to predict bone regeneration. This work opens perspectives for a clinical application in personalized bone regeneration.
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Affiliation(s)
- Charlotte Garot
- CNRS EMR 5000 Biomimetism and Regenerative Medicine (BRM), INSERM U1292 Biosanté, CEA, Université Grenoble Alpes, 17 avenue des Martyrs, Grenoble, F-38054, France
| | - Sarah Schoffit
- Ecole Nationale Vétérinaire d'Alfort, Université Paris-Est, Maisons-Alfort, F-94704, France
- CNRS, INSERM, ENVA, B3OA, Université Paris Cité, Paris, F-75010, France
| | - Cécile Monfoulet
- INSERM, Institut Bergonié, University of Bordeaux, CIC 1401, Bordeaux, F-33000, France
- CIC-IT, INSERM, Institut Bergonié, CHU de Bordeaux, CIC 1401, Bordeaux, F-33000, France
| | - Paul Machillot
- CNRS EMR 5000 Biomimetism and Regenerative Medicine (BRM), INSERM U1292 Biosanté, CEA, Université Grenoble Alpes, 17 avenue des Martyrs, Grenoble, F-38054, France
| | - Claire Deroy
- INSERM, Institut Bergonié, University of Bordeaux, CIC 1401, Bordeaux, F-33000, France
- CIC-IT, INSERM, Institut Bergonié, CHU de Bordeaux, CIC 1401, Bordeaux, F-33000, France
| | - Samantha Roques
- INSERM, Institut Bergonié, University of Bordeaux, CIC 1401, Bordeaux, F-33000, France
- CIC-IT, INSERM, Institut Bergonié, CHU de Bordeaux, CIC 1401, Bordeaux, F-33000, France
| | - Julie Vial
- Ecole Nationale Vétérinaire d'Alfort, Université Paris-Est, Maisons-Alfort, F-94704, France
- CNRS, INSERM, ENVA, B3OA, Université Paris Cité, Paris, F-75010, France
| | - Julien Vollaire
- INSERM U1209, Institute of Advanced Biosciences, Grenoble, F-38000, France
- Institute of Advanced Biosciences, Université Grenoble Alpes, Grenoble, F-38000, France
| | - Martine Renard
- INSERM, Institut Bergonié, University of Bordeaux, CIC 1401, Bordeaux, F-33000, France
- CIC-IT, INSERM, Institut Bergonié, CHU de Bordeaux, CIC 1401, Bordeaux, F-33000, France
| | - Hasan Ghanem
- CNRS, INSERM, ENVA, B3OA, Université Paris Cité, Paris, F-75010, France
| | - Hanane El-Hafci
- CNRS, INSERM, ENVA, B3OA, Université Paris Cité, Paris, F-75010, France
| | - Adeline Decambron
- Ecole Nationale Vétérinaire d'Alfort, Université Paris-Est, Maisons-Alfort, F-94704, France
- CNRS, INSERM, ENVA, B3OA, Université Paris Cité, Paris, F-75010, France
| | - Véronique Josserand
- INSERM U1209, Institute of Advanced Biosciences, Grenoble, F-38000, France
- Institute of Advanced Biosciences, Université Grenoble Alpes, Grenoble, F-38000, France
| | - Laurence Bordenave
- INSERM, Institut Bergonié, University of Bordeaux, CIC 1401, Bordeaux, F-33000, France
- CIC-IT, INSERM, Institut Bergonié, CHU de Bordeaux, CIC 1401, Bordeaux, F-33000, France
| | - Georges Bettega
- INSERM U1209, Institute of Advanced Biosciences, Grenoble, F-38000, France
- Service de Chirurgie Maxillo-Faciale, Centre Hospitalier Annecy Genevois, 1 avenue de l'hôpital, Epagny Metz-Tessy, F-74370, France
| | - Marlène Durand
- INSERM, Institut Bergonié, University of Bordeaux, CIC 1401, Bordeaux, F-33000, France
- CIC-IT, INSERM, Institut Bergonié, CHU de Bordeaux, CIC 1401, Bordeaux, F-33000, France
| | - Mathieu Manassero
- Ecole Nationale Vétérinaire d'Alfort, Université Paris-Est, Maisons-Alfort, F-94704, France
- CNRS, INSERM, ENVA, B3OA, Université Paris Cité, Paris, F-75010, France
| | - Véronique Viateau
- Ecole Nationale Vétérinaire d'Alfort, Université Paris-Est, Maisons-Alfort, F-94704, France
- CNRS, INSERM, ENVA, B3OA, Université Paris Cité, Paris, F-75010, France
| | | | - Catherine Picart
- CNRS EMR 5000 Biomimetism and Regenerative Medicine (BRM), INSERM U1292 Biosanté, CEA, Université Grenoble Alpes, 17 avenue des Martyrs, Grenoble, F-38054, France
- Institut Universitaire de France (IUF), 1 rue Descartes, Paris CEDEX 05, 75231, France
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Bello SA, Cruz-Lebrón J, Rodríguez-Rivera OA, Nicolau E. Bioactive Scaffolds as a Promising Alternative for Enhancing Critical-Size Bone Defect Regeneration in the Craniomaxillofacial Region. ACS APPLIED BIO MATERIALS 2023; 6:4465-4503. [PMID: 37877225 DOI: 10.1021/acsabm.3c00432] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2023]
Abstract
Reconstruction of critical-size bone defects (CSDs) in the craniomaxillofacial (CMF) region remains challenging. Scaffold-based bone-engineered constructs have been proposed as an alternative to the classical treatments made with autografts and allografts. Scaffolds, a key component of engineered constructs, have been traditionally viewed as biologically passive temporary replacements of deficient bone lacking intrinsic cues to promote osteogenesis. Nowadays, scaffolds are functionalized, giving rise to bioactive scaffolds promoting bone regeneration more effectively than conventional counterparts. This review focuses on the three approaches most used to bioactivate scaffolds: (1) conferring microarchitectural designs or surface nanotopography; (2) loading bioactive molecules; and (3) seeding stem cells on scaffolds, providing relevant examples of in vivo (preclinical and clinical) studies where these methods are employed to enhance CSDs healing in the CMF region. From these, adding bioactive molecules (specifically bone morphogenetic proteins or BMPs) to scaffolds has been the most explored to bioactivate scaffolds. Nevertheless, the downsides of grafting BMP-loaded scaffolds in patients have limited its successful translation into clinics. Despite these drawbacks, scaffolds containing safer, cheaper, and more effective bioactive molecules, combined with stem cells and topographical cues, remain a promising alternative for clinical use to treat CSDs in the CMF complex replacing autografts and allografts.
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Affiliation(s)
- Samir A Bello
- Department of Chemistry, University of Puerto Rico, Rio Piedras Campus, PO Box 23346, San Juan, Puerto Rico 00931, United States
- Molecular Sciences Research Center, University of Puerto Rico, 1390 Ponce De León Ave, Suite 1-7, San Juan, Puerto Rico 00926, United States
| | - Junellie Cruz-Lebrón
- Department of Chemistry, University of Puerto Rico, Rio Piedras Campus, PO Box 23346, San Juan, Puerto Rico 00931, United States
- Molecular Sciences Research Center, University of Puerto Rico, 1390 Ponce De León Ave, Suite 1-7, San Juan, Puerto Rico 00926, United States
| | - Osvaldo A Rodríguez-Rivera
- Department of Chemistry, University of Puerto Rico, Rio Piedras Campus, PO Box 23346, San Juan, Puerto Rico 00931, United States
- Molecular Sciences Research Center, University of Puerto Rico, 1390 Ponce De León Ave, Suite 1-7, San Juan, Puerto Rico 00926, United States
| | - Eduardo Nicolau
- Department of Chemistry, University of Puerto Rico, Rio Piedras Campus, PO Box 23346, San Juan, Puerto Rico 00931, United States
- Molecular Sciences Research Center, University of Puerto Rico, 1390 Ponce De León Ave, Suite 1-7, San Juan, Puerto Rico 00926, United States
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9
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Ivanovski S, Breik O, Carluccio D, Alayan J, Staples R, Vaquette C. 3D printing for bone regeneration: challenges and opportunities for achieving predictability. Periodontol 2000 2023; 93:358-384. [PMID: 37823472 DOI: 10.1111/prd.12525] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2023] [Revised: 07/18/2023] [Accepted: 08/26/2023] [Indexed: 10/13/2023]
Abstract
3D printing offers attractive opportunities for large-volume bone regeneration in the oro-dental and craniofacial regions. This is enabled by the development of CAD-CAM technologies that support the design and manufacturing of anatomically accurate meshes and scaffolds. This review describes the main 3D-printing technologies utilized for the fabrication of these patient-matched devices, and reports on their pre-clinical and clinical performance including the occurrence of complications for vertical bone augmentation and craniofacial applications. Furthermore, the regulatory pathway for approval of these devices is discussed, highlighting the main hurdles and obstacles. Finally, the review elaborates on a variety of strategies for increasing bone regeneration capacity and explores the future of 4D bioprinting and biodegradable metal 3D printing.
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Affiliation(s)
- Saso Ivanovski
- School of Dentistry, Centre for Orofacial Regeneration, Reconstruction and Rehabilitation (COR3), The University of Queensland, Queensland, Herston, Australia
| | - Omar Breik
- Herston Biofabrication Institute, Metro North Hospital and Health Service, Brisbane, Queensland, Australia
| | - Danilo Carluccio
- Herston Biofabrication Institute, Metro North Hospital and Health Service, Brisbane, Queensland, Australia
| | - Jamil Alayan
- School of Dentistry, Centre for Orofacial Regeneration, Reconstruction and Rehabilitation (COR3), The University of Queensland, Queensland, Herston, Australia
| | - Ruben Staples
- School of Dentistry, Centre for Orofacial Regeneration, Reconstruction and Rehabilitation (COR3), The University of Queensland, Queensland, Herston, Australia
| | - Cedryck Vaquette
- School of Dentistry, Centre for Orofacial Regeneration, Reconstruction and Rehabilitation (COR3), The University of Queensland, Queensland, Herston, Australia
- Herston Biofabrication Institute, Metro North Hospital and Health Service, Brisbane, Queensland, Australia
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10
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Cai H, Xu X, Lu X, Zhao M, Jia Q, Jiang HB, Kwon JS. Dental Materials Applied to 3D and 4D Printing Technologies: A Review. Polymers (Basel) 2023; 15:2405. [PMID: 37242980 PMCID: PMC10224282 DOI: 10.3390/polym15102405] [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: 04/23/2023] [Revised: 05/09/2023] [Accepted: 05/17/2023] [Indexed: 05/28/2023] Open
Abstract
As computer-aided design and computer-aided manufacturing (CAD/CAM) technologies have matured, three-dimensional (3D) printing materials suitable for dentistry have attracted considerable research interest, owing to their high efficiency and low cost for clinical treatment. Three-dimensional printing technology, also known as additive manufacturing, has developed rapidly over the last forty years, with gradual application in various fields from industry to dental sciences. Four-dimensional (4D) printing, defined as the fabrication of complex spontaneous structures that change over time in response to external stimuli in expected ways, includes the increasingly popular bioprinting. Existing 3D printing materials have varied characteristics and scopes of application; therefore, categorization is required. This review aims to classify, summarize, and discuss dental materials for 3D printing and 4D printing from a clinical perspective. Based on these, this review describes four major materials, i.e., polymers, metals, ceramics, and biomaterials. The manufacturing process of 3D printing and 4D printing materials, their characteristics, applicable printing technologies, and clinical application scope are described in detail. Furthermore, the development of composite materials for 3D printing is the main focus of future research, as combining multiple materials can improve the materials' properties. Updates in material sciences play important roles in dentistry; hence, the emergence of newer materials are expected to promote further innovations in dentistry.
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Affiliation(s)
- HongXin Cai
- Department and Research Institute of Dental Biomaterials and Bioengineering, Yonsei University College of Dentistry, Seoul 03722, Republic of Korea;
| | - Xiaotong Xu
- The CONVERSATIONALIST Club, School of Stomatology, Shandong First Medical University, Jinan 250117, China; (X.X.); (X.L.); (M.Z.); (Q.J.)
| | - Xinyue Lu
- The CONVERSATIONALIST Club, School of Stomatology, Shandong First Medical University, Jinan 250117, China; (X.X.); (X.L.); (M.Z.); (Q.J.)
| | - Menghua Zhao
- The CONVERSATIONALIST Club, School of Stomatology, Shandong First Medical University, Jinan 250117, China; (X.X.); (X.L.); (M.Z.); (Q.J.)
| | - Qi Jia
- The CONVERSATIONALIST Club, School of Stomatology, Shandong First Medical University, Jinan 250117, China; (X.X.); (X.L.); (M.Z.); (Q.J.)
| | - Heng-Bo Jiang
- The CONVERSATIONALIST Club, School of Stomatology, Shandong First Medical University, Jinan 250117, China; (X.X.); (X.L.); (M.Z.); (Q.J.)
| | - Jae-Sung Kwon
- Department and Research Institute of Dental Biomaterials and Bioengineering, Yonsei University College of Dentistry, Seoul 03722, Republic of Korea;
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11
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A flexible design framework to design graded porous bone scaffolds with adjustable anisotropic properties. J Mech Behav Biomed Mater 2023; 140:105727. [PMID: 36801781 DOI: 10.1016/j.jmbbm.2023.105727] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2022] [Revised: 01/10/2023] [Accepted: 02/11/2023] [Indexed: 02/17/2023]
Abstract
Since the success of bone regenerative medicine depends on scaffold morphological and mechanical properties, numerous scaffolds designs have been proposed in the last decade, including graded structures that are suited to enhance tissue ingrowth. Most of these structures are based either on foams with a random pore definition, or on the periodic repetition of a unit cell (UC). These approaches are limited by the range of target porosities and obtained effective mechanical properties, and do not permit to easily generate a pore size gradient from the core to the periphery of the scaffold. In opposition, the objective of the present contribution is to propose a flexible design framework to generate various three-dimensional (3D) scaffolds structures including cylindrical graded scaffolds from the definition of a UC by making use of a non-periodic mapping. Conformal mappings are firstly used to generate graded circular cross-sections, while 3D structures are then obtained by stacking the cross-sections with or without a twist between different scaffold layers. The effective mechanical properties of different scaffold configurations are presented and compared using an energy-based efficient numerical method, pointing out the versatility of the design procedure to separately govern longitudinal and transverse anisotropic scaffold properties. Among these configurations, a helical structure exhibiting couplings between transverse and longitudinal properties is proposed and permits to extend the adaptability of the proposed framework. In order to investigate the capacity of common additive manufacturing techniques to fabricate the proposed structures, a subset of these configurations is elaborated using a standard SLA setup, and subjected to experimental mechanical testing. Despite observed geometric differences between the initial design and the actual obtained structures, the effective properties are satisfyingly predicted by the proposed computational method. Promising perspectives are offered concerning the design of self-fitting scaffolds with on-demand properties depending on the clinical application.
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12
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Putra NE, Leeflang MA, Klimopoulou M, Dong J, Taheri P, Huan Z, Fratila-Apachitei LE, Mol JMC, Chang J, Zhou J, Zadpoor AA. Extrusion-based 3D printing of biodegradable, osteogenic, paramagnetic, and porous FeMn-akermanite bone substitutes. Acta Biomater 2023; 162:182-198. [PMID: 36972809 DOI: 10.1016/j.actbio.2023.03.033] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2023] [Revised: 03/13/2023] [Accepted: 03/21/2023] [Indexed: 03/29/2023]
Abstract
The development of biodegradable Fe-based bone implants has rapidly progressed in recent years. Most of the challenges encountered in developing such implants have been tackled individually or in combination using additive manufacturing technologies. Yet not all the challenges have been overcome. Herein, we present porous FeMn-akermanite composite scaffolds fabricated by extrusion-based 3D printing to address the unmet clinical needs associated with Fe-based biomaterials for bone regeneration, including low biodegradation rate, MRI-incompatibility, mechanical properties, and limited bioactivity. In this research, we developed inks containing Fe, 35 wt% Mn, and 20 or 30 vol% akermanite powder mixtures. 3D printing was optimized together with the debinding and sintering steps to obtain scaffolds with interconnected porosity of 69%. The Fe-matrix in the composites contained the γ-FeMn phase as well as nesosilicate phases. The former made the composites paramagnetic and, thus, MRI-friendly. The in vitro biodegradation rates of the composites with 20 and 30 vol% akermanite were respectively 0.24 and 0.27 mm/y, falling within the ideal range of biodegradation rates for bone substitution. The yield strengths of the porous composites stayed within the range of the values of the trabecular bone, despite in vitro biodegradation for 28 d. All the composite scaffolds favored the adhesion, proliferation, and osteogenic differentiation of preosteoblasts, as revealed by Runx2 assay. Moreover, osteopontin was detected in the extracellular matrix of cells on the scaffolds. Altogether, these results demonstrate the remarkable potential of these composites in fulfilling the requirements of porous biodegradable bone substitutes, motivating future in vivo research. STATEMENT OF SIGNIFICANCE: We developed FeMn-akermanite composite scaffolds by taking advantage of the multi-material capacity of extrusion-based 3D printing. Our results demonstrated that the FeMn-akermanite scaffolds showed an exceptional performance in fulfilling all the requirements for bone substitution in vitro, i.e., a sufficient biodegradation rate, having mechanical properties in the range of trabecular bone even after 4 weeks biodegradation, paramagnetic, cytocompatible and most importantly osteogenic. Our results encourage further research on Fe-based bone implants in in vivo.
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Affiliation(s)
- N E Putra
- Department of Biomechanical Engineering, Faculty of Mechanical, Maritime, and Materials Engineering, Delft University of Technology, Mekelweg 2, 2628 CD Delft, The Netherlands.
| | - M A Leeflang
- Department of Biomechanical Engineering, Faculty of Mechanical, Maritime, and Materials Engineering, Delft University of Technology, Mekelweg 2, 2628 CD Delft, The Netherlands.
| | - M Klimopoulou
- Department of Biomechanical Engineering, Faculty of Mechanical, Maritime, and Materials Engineering, Delft University of Technology, Mekelweg 2, 2628 CD Delft, The Netherlands.
| | - J Dong
- Department of Biomechanical Engineering, Faculty of Mechanical, Maritime, and Materials Engineering, Delft University of Technology, Mekelweg 2, 2628 CD Delft, The Netherlands.
| | - P Taheri
- Department of Materials Science and Engineering, Faculty of Mechanical, Maritime, and Materials Engineering, Delft University of Technology, Mekelweg 2, 2628 CD Delft, The Netherlands.
| | - Z Huan
- Shanghai Institute of Ceramics, Chinese Academy of Sciences, 1295 Dingxi Road, Shanghai 200050, China.
| | - L E Fratila-Apachitei
- Department of Biomechanical Engineering, Faculty of Mechanical, Maritime, and Materials Engineering, Delft University of Technology, Mekelweg 2, 2628 CD Delft, The Netherlands.
| | - J M C Mol
- Department of Materials Science and Engineering, Faculty of Mechanical, Maritime, and Materials Engineering, Delft University of Technology, Mekelweg 2, 2628 CD Delft, The Netherlands.
| | - J Chang
- Shanghai Institute of Ceramics, Chinese Academy of Sciences, 1295 Dingxi Road, Shanghai 200050, China.
| | - J Zhou
- Department of Biomechanical Engineering, Faculty of Mechanical, Maritime, and Materials Engineering, Delft University of Technology, Mekelweg 2, 2628 CD Delft, The Netherlands.
| | - A A Zadpoor
- Department of Biomechanical Engineering, Faculty of Mechanical, Maritime, and Materials Engineering, Delft University of Technology, Mekelweg 2, 2628 CD Delft, The Netherlands.
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13
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Rodrigues JFB, Azevedo VS, Medeiros RP, Barreto GBDC, Pinto MRDO, Fook MVL, Montazerian M. Physicochemical, Morphological, and Cytotoxic Properties of Brazilian Jackfruit (Artocarpus heterophyllus) Starch Scaffold Loaded with Silver Nanoparticles. J Funct Biomater 2023; 14:jfb14030143. [PMID: 36976067 PMCID: PMC10056764 DOI: 10.3390/jfb14030143] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2022] [Revised: 11/23/2022] [Accepted: 12/06/2022] [Indexed: 03/08/2023] Open
Abstract
Due to the physical, thermal, and biological properties of silver nanoparticles (AgNPs), as well as the biocompatibility and environmental safety of the naturally occurring polymeric component, polysaccharide-based composites containing AgNPs are a promising choice for the development of biomaterials. Starch is a low-cost, non-toxic, biocompatible, and tissue-healing natural polymer. The application of starch in various forms and its combination with metallic nanoparticles have contributed to the advancement of biomaterials. Few investigations into jackfruit starch with silver nanoparticle biocomposites exist. This research intends to explore the physicochemical, morphological, and cytotoxic properties of a Brazilian jackfruit starch-based scaffold loaded with AgNPs. The AgNPs were synthesized by chemical reduction and the scaffold was produced by gelatinization. X-ray diffraction (XRD), differential scanning calorimetry (DSC), scanning electron microscopy coupled with energy-dispersive spectroscopy (SEM-EDS), and Fourier-transform infrared spectroscopy (FTIR) were used to study the scaffold. The findings supported the development of stable, monodispersed, and triangular AgNPs. XRD and EDS analyses demonstrated the incorporation of silver nanoparticles. AgNPs could alter the scaffold’s crystallinity, roughness, and thermal stability without affecting its chemistry or physics. Triangular anisotropic AgNPs exhibited no toxicity against L929 cells at concentrations ranging from 6.25 × 10−5 to 1 × 10−3 mol·L−1, implying that the scaffolds might have had no adverse effects on the cells. The scaffolds prepared with jackfruit starch showed greater crystallinity and thermal stability, and absence of toxicity after the incorporation of triangular AgNPs. These findings indicate that jackfruit is a promising starch source for developing biomaterials.
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14
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Schamberger B, Ziege R, Anselme K, Ben Amar M, Bykowski M, Castro APG, Cipitria A, Coles RA, Dimova R, Eder M, Ehrig S, Escudero LM, Evans ME, Fernandes PR, Fratzl P, Geris L, Gierlinger N, Hannezo E, Iglič A, Kirkensgaard JJK, Kollmannsberger P, Kowalewska Ł, Kurniawan NA, Papantoniou I, Pieuchot L, Pires THV, Renner LD, Sageman-Furnas AO, Schröder-Turk GE, Sengupta A, Sharma VR, Tagua A, Tomba C, Trepat X, Waters SL, Yeo EF, Roschger A, Bidan CM, Dunlop JWC. Curvature in Biological Systems: Its Quantification, Emergence, and Implications across the Scales. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2023; 35:e2206110. [PMID: 36461812 DOI: 10.1002/adma.202206110] [Citation(s) in RCA: 33] [Impact Index Per Article: 33.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/05/2022] [Revised: 11/22/2022] [Indexed: 06/17/2023]
Abstract
Surface curvature both emerges from, and influences the behavior of, living objects at length scales ranging from cell membranes to single cells to tissues and organs. The relevance of surface curvature in biology is supported by numerous experimental and theoretical investigations in recent years. In this review, first, a brief introduction to the key ideas of surface curvature in the context of biological systems is given and the challenges that arise when measuring surface curvature are discussed. Giving an overview of the emergence of curvature in biological systems, its significance at different length scales becomes apparent. On the other hand, summarizing current findings also shows that both single cells and entire cell sheets, tissues or organisms respond to curvature by modulating their shape and their migration behavior. Finally, the interplay between the distribution of morphogens or micro-organisms and the emergence of curvature across length scales is addressed with examples demonstrating these key mechanistic principles of morphogenesis. Overall, this review highlights that curved interfaces are not merely a passive by-product of the chemical, biological, and mechanical processes but that curvature acts also as a signal that co-determines these processes.
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Affiliation(s)
- Barbara Schamberger
- Department of the Chemistry and Physics of Materials, Paris-Lodron University of Salzburg, 5020, Salzburg, Austria
| | - Ricardo Ziege
- Department of Biomaterials, Max Planck Institute of Colloids and Interfaces, 14476, Potsdam, Germany
| | - Karine Anselme
- IS2M (CNRS - UMR 7361), Université de Haute-Alsace, F-68100, Mulhouse, France
- Université de Strasbourg, F-67081, Strasbourg, France
| | - Martine Ben Amar
- Department of Physics, Laboratoire de Physique de l'Ecole Normale Supérieure, 24 rue Lhomond, 75005, Paris, France
| | - Michał Bykowski
- Department of Plant Anatomy and Cytology, Faculty of Biology, University of Warsaw, 02-096, Warsaw, Poland
| | - André P G Castro
- IDMEC, Instituto Superior Técnico, Universidade de Lisboa, 1049-001, Lisboa, Portugal
- ESTS, Instituto Politécnico de Setúbal, 2914-761, Setúbal, Portugal
| | - Amaia Cipitria
- IS2M (CNRS - UMR 7361), Université de Haute-Alsace, F-68100, Mulhouse, France
- Group of Bioengineering in Regeneration and Cancer, Biodonostia Health Research Institute, 20014, San Sebastian, Spain
- IKERBASQUE, Basque Foundation for Science, 48009, Bilbao, Spain
| | - Rhoslyn A Coles
- Cluster of Excellence, Matters of Activity, Humboldt-Universität zu Berlin, 10178, Berlin, Germany
| | - Rumiana Dimova
- Department of Theory and Bio-Systems, Max Planck Institute of Colloids and Interfaces, 14476, Potsdam, Germany
| | - Michaela Eder
- Department of Biomaterials, Max Planck Institute of Colloids and Interfaces, 14476, Potsdam, Germany
| | - Sebastian Ehrig
- Max Delbrück Center for Molecular Medicine, 13125, Berlin, Germany
- Berlin Institute for Medical Systems Biology, 10115, Berlin, Germany
| | - Luis M Escudero
- Instituto de Biomedicina de Sevilla (IBiS), Hospital Universitario Virgen del Rocío/CSIC/Universidad de Sevilla and Departamento de Biología Celular, Universidad de Sevilla, 41013, Seville, Spain
- Biomedical Network Research Centre on Neurodegenerative Diseases (CIBERNED), 28031, Madrid, Spain
| | - Myfanwy E Evans
- Institute for Mathematics, University of Potsdam, 14476, Potsdam, Germany
| | - Paulo R Fernandes
- IDMEC, Instituto Superior Técnico, Universidade de Lisboa, 1049-001, Lisboa, Portugal
| | - Peter Fratzl
- Department of Biomaterials, Max Planck Institute of Colloids and Interfaces, 14476, Potsdam, Germany
| | - Liesbet Geris
- Biomechanics Research Unit, GIGA In Silico Medicine, University of Liège, 4000, Liège, Belgium
| | - Notburga Gierlinger
- Institute of Biophysics, Department of Nanobiotechnology, University of Natural Resources and Life Sciences Vienna (Boku), 1190, Vienna, Austria
| | - Edouard Hannezo
- Institute of Science and Technology Austria, 3400, Klosterneuburg, Austria
| | - Aleš Iglič
- Laboratory of Physics, Faculty of Electrical engineering, University of Ljubljana, Tržaška 25, SI-1000, Ljubljana, Slovenia
| | - Jacob J K Kirkensgaard
- Condensed Matter Physics, Niels Bohr Institute, University of Copenhagen, Universitetsparken 5, 2100, København Ø, Denmark
- Ingredients and Dairy Technology, Department of Food Science, University of Copenhagen, Rolighedsvej 26, 1958, Frederiksberg, Denmark
| | - Philip Kollmannsberger
- Center for Computational and Theoretical Biology, University of Würzburg, 97074, Würzburg, Germany
| | - Łucja Kowalewska
- Department of Plant Anatomy and Cytology, Faculty of Biology, University of Warsaw, 02-096, Warsaw, Poland
| | - Nicholas A Kurniawan
- Department of Biomedical Engineering and Institute for Complex Molecular Systems, Eindhoven University of Technology, 5600 MB, Eindhoven, The Netherlands
| | - Ioannis Papantoniou
- Prometheus Division of Skeletal Tissue Engineering, KU Leuven, O&N1, Herestraat 49, PB 813, 3000, Leuven, Belgium
- Skeletal Biology and Engineering Research Center, Department of Development and Regeneration, KU Leuven, O&N1, Herestraat 49, PB 813, 3000, Leuven, Belgium
- Institute of Chemical Engineering Sciences, Foundation for Research and Technology (FORTH), Stadiou Str., 26504, Patras, Greece
| | - Laurent Pieuchot
- IS2M (CNRS - UMR 7361), Université de Haute-Alsace, F-68100, Mulhouse, France
- Université de Strasbourg, F-67081, Strasbourg, France
| | - Tiago H V Pires
- IDMEC, Instituto Superior Técnico, Universidade de Lisboa, 1049-001, Lisboa, Portugal
| | - Lars D Renner
- Leibniz Institute of Polymer Research and the Max Bergmann Center of Biomaterials, 01069, Dresden, Germany
| | | | - Gerd E Schröder-Turk
- School of Physics, Chemistry and Mathematics, Murdoch University, 90 South St, Murdoch, WA, 6150, Australia
- Department of Materials Physics, Research School of Physics, The Australian National University, Canberra, ACT, 2600, Australia
| | - Anupam Sengupta
- Physics of Living Matter, Department of Physics and Materials Science, University of Luxembourg, L-1511, Luxembourg City, Grand Duchy of Luxembourg
| | - Vikas R Sharma
- Department of the Chemistry and Physics of Materials, Paris-Lodron University of Salzburg, 5020, Salzburg, Austria
| | - Antonio Tagua
- Instituto de Biomedicina de Sevilla (IBiS), Hospital Universitario Virgen del Rocío/CSIC/Universidad de Sevilla and Departamento de Biología Celular, Universidad de Sevilla, 41013, Seville, Spain
- Biomedical Network Research Centre on Neurodegenerative Diseases (CIBERNED), 28031, Madrid, Spain
| | - Caterina Tomba
- Univ Lyon, CNRS, INSA Lyon, Ecole Centrale de Lyon, Université Claude Bernard Lyon 1, CPE Lyon, INL, UMR5270, 69622, Villeurbanne, France
| | - Xavier Trepat
- ICREA at the Institute for Bioengineering of Catalonia, The Barcelona Institute for Science and Technology, 08028, Barcelona, Spain
- Centro de Investigación Biomédica en Red en Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), 08028, Barcelona, Spain
| | - Sarah L Waters
- Mathematical Institute, University of Oxford, OX2 6GG, Oxford, UK
| | - Edwina F Yeo
- Mathematical Institute, University of Oxford, OX2 6GG, Oxford, UK
| | - Andreas Roschger
- Department of the Chemistry and Physics of Materials, Paris-Lodron University of Salzburg, 5020, Salzburg, Austria
| | - Cécile M Bidan
- Department of Biomaterials, Max Planck Institute of Colloids and Interfaces, 14476, Potsdam, Germany
| | - John W C Dunlop
- Department of the Chemistry and Physics of Materials, Paris-Lodron University of Salzburg, 5020, Salzburg, Austria
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15
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Kalisher R, Cradic MS, Adams MJ, Martin MAS, Finkelstein I. Cranial trephination and infectious disease in the Eastern Mediterranean: The evidence from two elite brothers from Late Bronze Megiddo, Israel. PLoS One 2023; 18:e0281020. [PMID: 36812179 PMCID: PMC9946252 DOI: 10.1371/journal.pone.0281020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2022] [Accepted: 01/12/2023] [Indexed: 02/24/2023] Open
Abstract
Here we present the paleopathological profiles of two young adult males, identified as brothers through ancient DNA analysis, who were buried together beneath the floor of an elite early Late Bronze Age I (ca. 1550-1450 BC) domestic structure at the urban center of Megiddo (modern Israel). Both individuals displayed uncommon morphological variants related to developmental conditions, and each exhibited extensive bone remodeling consistent with chronic infectious disease. Additionally, one brother had a healed fracture of the nose, as well as a large square piece of bone cut from the frontal bone (cranial trephination). We consider the potential etiologies for the appearance of the skeletal anomalies and lesions. Based on the bioarchaeological context, we propose that a shared epigenetic landscape predisposed the brothers to acquiring an infectious disease and their elite status privileged them enough to endure it. We then contextualize these potential illnesses and disorders with the trephination procedure. The infrequency of trephination in the region indicates that only selected individuals could access such a procedure, and the severity of the pathological lesions suggests the procedure was possibly intended as curative to deteriorating health. Ultimately, both brothers were buried with the same rites as others in their community, thus demonstrating their continued integration in society even after death.
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Affiliation(s)
- Rachel Kalisher
- Joukowsky Institute for Archaeology and the Ancient World, Brown University, Providence, Rhode Island, United States of America
- * E-mail:
| | - Melissa S. Cradic
- Department of History, University at Albany, State University of New York, Albany, New York, United States of America
| | - Matthew J. Adams
- W.F. Albright Institute for Archaeological Research, Jerusalem, Israel
| | - Mario A. S. Martin
- Leon Recanati Institute for Maritime Studies, University of Haifa, Haifa, Israel
- Institute of Ancient History and Ancient Near Eastern Studies, University of Innsbruck, Vienna, Austria
| | - Israel Finkelstein
- School of Archaeology and Maritime Cultures, University of Haifa, Haifa, Israel
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16
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Davoodi E, Montazerian H, Mirhakimi AS, Zhianmanesh M, Ibhadode O, Shahabad SI, Esmaeilizadeh R, Sarikhani E, Toorandaz S, Sarabi SA, Nasiri R, Zhu Y, Kadkhodapour J, Li B, Khademhosseini A, Toyserkani E. Additively manufactured metallic biomaterials. Bioact Mater 2022; 15:214-249. [PMID: 35386359 PMCID: PMC8941217 DOI: 10.1016/j.bioactmat.2021.12.027] [Citation(s) in RCA: 25] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2021] [Revised: 12/17/2021] [Accepted: 12/21/2021] [Indexed: 02/06/2023] Open
Abstract
Metal additive manufacturing (AM) has led to an evolution in the design and fabrication of hard tissue substitutes, enabling personalized implants to address each patient's specific needs. In addition, internal pore architectures integrated within additively manufactured scaffolds, have provided an opportunity to further develop and engineer functional implants for better tissue integration, and long-term durability. In this review, the latest advances in different aspects of the design and manufacturing of additively manufactured metallic biomaterials are highlighted. After introducing metal AM processes, biocompatible metals adapted for integration with AM machines are presented. Then, we elaborate on the tools and approaches undertaken for the design of porous scaffold with engineered internal architecture including, topology optimization techniques, as well as unit cell patterns based on lattice networks, and triply periodic minimal surface. Here, the new possibilities brought by the functionally gradient porous structures to meet the conflicting scaffold design requirements are thoroughly discussed. Subsequently, the design constraints and physical characteristics of the additively manufactured constructs are reviewed in terms of input parameters such as design features and AM processing parameters. We assess the proposed applications of additively manufactured implants for regeneration of different tissue types and the efforts made towards their clinical translation. Finally, we conclude the review with the emerging directions and perspectives for further development of AM in the medical industry.
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Affiliation(s)
- Elham Davoodi
- Multi-Scale Additive Manufacturing (MSAM) Laboratory, Mechanical and Mechatronics Engineering Department, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada
- Department of Bioengineering, University of California, Los Angeles, California 90095, United States
- California NanoSystems Institute (CNSI), University of California, Los Angeles, California 90095, United States
- Terasaki Institute for Biomedical Innovation, Los Angeles, California 90024, United States
| | - Hossein Montazerian
- Department of Bioengineering, University of California, Los Angeles, California 90095, United States
- California NanoSystems Institute (CNSI), University of California, Los Angeles, California 90095, United States
- Terasaki Institute for Biomedical Innovation, Los Angeles, California 90024, United States
| | - Anooshe Sadat Mirhakimi
- Department of Mechanical Engineering, Isfahan University of Technology, Isfahan, Isfahan 84156-83111, Iran
| | - Masoud Zhianmanesh
- School of Biomedical Engineering, University of Sydney, Sydney, New South Wales 2006, Australia
| | - Osezua Ibhadode
- Multi-Scale Additive Manufacturing (MSAM) Laboratory, Mechanical and Mechatronics Engineering Department, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada
| | - Shahriar Imani Shahabad
- Multi-Scale Additive Manufacturing (MSAM) Laboratory, Mechanical and Mechatronics Engineering Department, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada
| | - Reza Esmaeilizadeh
- Multi-Scale Additive Manufacturing (MSAM) Laboratory, Mechanical and Mechatronics Engineering Department, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada
| | - Einollah Sarikhani
- Department of Nanoengineering, Jacobs School of Engineering, University of California, San Diego, California 92093, United States
| | - Sahar Toorandaz
- Multi-Scale Additive Manufacturing (MSAM) Laboratory, Mechanical and Mechatronics Engineering Department, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada
| | - Shima A. Sarabi
- Mechanical and Aerospace Engineering Department, University of California, Los Angeles, California 90095, United States
| | - Rohollah Nasiri
- Terasaki Institute for Biomedical Innovation, Los Angeles, California 90024, United States
| | - Yangzhi Zhu
- Terasaki Institute for Biomedical Innovation, Los Angeles, California 90024, United States
| | - Javad Kadkhodapour
- Department of Mechanical Engineering, Shahid Rajaee Teacher Training University, Tehran, Tehran 16785-163, Iran
- Institute for Materials Testing, Materials Science and Strength of Materials, University of Stuttgart, Stuttgart 70569, Germany
| | - Bingbing Li
- Terasaki Institute for Biomedical Innovation, Los Angeles, California 90024, United States
- Department of Manufacturing Systems Engineering and Management, California State University, Northridge, California 91330, United States
| | - Ali Khademhosseini
- Terasaki Institute for Biomedical Innovation, Los Angeles, California 90024, United States
| | - Ehsan Toyserkani
- Multi-Scale Additive Manufacturing (MSAM) Laboratory, Mechanical and Mechatronics Engineering Department, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada
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17
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Howard MT, Wang S, Berger AG, Martin JR, Jalili-Firoozinezhad S, Padera RF, Hammond PT. Sustained release of BMP-2 using self-assembled layer-by-layer film-coated implants enhances bone regeneration over burst release. Biomaterials 2022; 288:121721. [PMID: 35981926 PMCID: PMC10396073 DOI: 10.1016/j.biomaterials.2022.121721] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2022] [Revised: 07/08/2022] [Accepted: 08/01/2022] [Indexed: 11/23/2022]
Abstract
Current clinical products delivering the osteogenic growth factor bone morphogenetic protein 2 (BMP-2) for bone regeneration have been plagued by safety concerns due to a high incidence of off-target effects resulting from bolus release and supraphysiological doses. Layer-by-layer (LbL) film deposition offers the opportunity to coat bone defect-relevant substrates with thin films containing proteins and other therapeutics; however, control of release kinetics is often hampered by interlayer diffusion of drugs throughout the film during assembly, which causes burst drug release. In this work, we present the design of different laponite clay diffusional barrier layer architectures in self-assembled LbL films to modulate the release kinetics of BMP-2 from the surface of a biodegradable implant. Release kinetics were tuned by incorporating laponite in different film arrangements and with varying deposition techniques to achieve release of BMP-2 over 2 days, 4 days, 14 days, and 30 days. Delivery of a low dose (0.5 μg) of BMP-2 over 2 days and 30 days using these LbL film architectures was then compared in an in vivo rat critical size calvarial defect model to determine the effect of BMP-2 release kinetics on bone regeneration. After 6 weeks, sustained release of BMP-2 over 30 days induced 3.7 times higher bone volume and 7.4 times higher bone mineral density as compared with 2-day release of BMP-2, which did not induce more bone growth than the uncoated scaffold control. These findings represent a crucial step in the understanding of how BMP-2 release kinetics influence treatment efficacy and underscore the necessity to optimize protein delivery methods in clinical formulations for bone regeneration. This work could be applied to the delivery of other therapeutic proteins for which careful tuning of the release rate is a key optimization parameter.
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Affiliation(s)
- MayLin T Howard
- Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA, 02139, United States; Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA, 02139, United States.
| | - Sheryl Wang
- Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA, 02139, United States; Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, MA, 02139, United States.
| | - Adam G Berger
- Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA, 02139, United States; Harvard-MIT Division of Health Sciences and Technology, Massachusetts Institute of Technology, Cambridge, MA, 02139, United States.
| | - John R Martin
- Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA, 02139, United States; Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA, 02139, United States.
| | - Sasan Jalili-Firoozinezhad
- Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA, 02139, United States; Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, MA, 02139, United States.
| | - Robert F Padera
- Harvard-MIT Division of Health Sciences and Technology, Massachusetts Institute of Technology, Cambridge, MA, 02139, United States; Department of Pathology, Brigham and Women's Hospital and Harvard Medical School, Boston, MA, 02215, United States.
| | - Paula T Hammond
- Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA, 02139, United States; Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA, 02139, United States.
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18
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Eichholz K, Freeman F, Pitacco P, Nulty J, Ahern D, Burdis R, Browe D, Garcia O, Hoey D, Kelly DJ. Scaffold microarchitecture regulates angiogenesis and the regeneration of large bone defects. Biofabrication 2022; 14. [PMID: 35947963 DOI: 10.1088/1758-5090/ac88a1] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2022] [Accepted: 08/10/2022] [Indexed: 11/11/2022]
Abstract
Emerging 3D printing technologies can provide exquisite control over the external shape and internal architecture of scaffolds and tissue engineered constructs, enabling systematic studies to explore how geometric design features influence the regenerative process. Here we used fused deposition modelling (FDM) and melt electrowriting (MEW) to investigate how scaffold microarchitecture influences the healing of large bone defects. FDM was used to fabricate scaffolds with relatively large fibre diameters and low porosities, while MEW was used to fabricate scaffolds with smaller fibre diameters and higher porosities, with both scaffolds being designed to have comparable surface areas. Scaffold microarchitecture significantly influenced the healing response following implantation into critically sized femoral defects in rats, with the FDM scaffolds supporting the formation of larger bone spicules through its pores, while the MEW scaffolds supported the formation of a more round bone front during healing. After 12 weeks in vivo, both MEW and FDM scaffolds supported significantly higher levels of defect vascularisation compared to empty controls, while the MEW scaffolds supported higher levels of new bone formation. Somewhat surprisingly, this superior healing in the MEW group did not correlate with higher levels of angiogenesis, with the FDM scaffold supporting greater total vessel formation and the formation of larger vessels, while the MEW scaffold promoted the formation of a dense microvasculature with minimal evidence of larger vessels infiltrating the defect region. To conclude, the small fibre diameter, high porosity and high specific surface area of the MEW scaffold proved beneficial for osteogenesis and bone regeneration, demonstrating that changes in scaffold architecture enabled by this additive manufacturing technique can dramatically modulate angiogenesis and tissue regeneration without the need for complex exogenous growth factors. These results provide a valuable insight into the importance of 3D printed scaffold architecture when developing new bone tissue engineering strategies.
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Affiliation(s)
- Kian Eichholz
- Department of Mechanical and Manufacturing Engineering, University of Dublin Trinity College, Parsons Building, Dublin, IRELAND
| | - Fiona Freeman
- Department of Mechanical and Manufacturing Engineering, Trinity College Dublin, Parsons building, Dublin, 2, IRELAND
| | - Pierluca Pitacco
- Department of Mechanical and Manufacturing Engineering, Trinity College Dublin, Parsons Building, Dublin 2, Dublin, 2, IRELAND
| | - Jessica Nulty
- Department of Mechanical and Manufacturing Engineering, Trinity College Dublin, Parsons Building, Dublin 2, Dublin, 2, IRELAND
| | - Daniel Ahern
- Department of Mechanical and Manufacturing Engineering, Trinity College Dublin, Parsons Building, Dublin 2, Dublin, 2, IRELAND
| | - Ross Burdis
- Trinity Biomedical Institute, Trinity Centre for Bioengineering, Trinity College Dublin, Dublin 2, Dublin, D02 PN40, IRELAND
| | - David Browe
- Department of Mechanical and Manufacturing Engineering, Trinity College Dublin, Parsons building, Dublin, 2, IRELAND
| | - Orquidea Garcia
- Johnson & Johnson 3D Printing Innovation & Customer Solutions, Johnson & Johnson Services Inc, Irvine, California, 0000, UNITED STATES
| | - David Hoey
- Department of Mechanical and Manufacturing Engineering, University of Dublin Trinity College, Parsons building, Dublin, 2, IRELAND
| | - Daniel John Kelly
- Department of Mechanical and Manufacturing Engineering, Trinity College Dublin, Parsons Building, Dublin 2, Dublin, 2, IRELAND
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19
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Multi-objective Shape Optimization of Bone Scaffolds: Enhancement of Mechanical Properties and Permeability. Acta Biomater 2022; 146:317-340. [PMID: 35533924 DOI: 10.1016/j.actbio.2022.04.051] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2022] [Revised: 04/05/2022] [Accepted: 04/29/2022] [Indexed: 11/23/2022]
Abstract
Porous scaffolds have recently attracted attention in bone tissue engineering. The implanted scaffolds are supposed to satisfy the mechanical and biological requirements. In this study, two porous structures named MFCC-1 (modified face centered cubic-1) and MFCC-2 (modified face centered cubic-2) are introduced. The proposed porous architectures are evaluated, optimized, and tested to enhance mechanical and biological properties. The geometric parameters of the scaffolds with porosities ranging from 70% to 90% are optimized to find a compromise between the effective Young's modulus and permeability, as well as satisfying the pore size and specific surface area requirements. To optimize the effective Young's modulus and permeability, we integrated a mathematical formulation, finite element analysis, and computational fluid dynamics simulations. For validation, the optimized scaffolds were 3D-printed, tested, and compared with two different orthogonal cylindrical struts (OCS) scaffold architectures. The MFCC designs are preferred to the generic OCS scaffolds from various perspectives: a) the MFCC architecture allows scaffold designs with porosities up to 96%; b) the very porous architecture of MFCC scaffolds allows achieving high permeabilities, which could potentially improve the cell diffusion; c) despite having a higher porosity compared to the OCS scaffolds, MFCC scaffolds improve mechanical performance regarding Young's modulus, stress concentration, and apparent yield strength; d) the proposed structures with different porosities are able to cover all the range of permeability for the human trabecular bones. The optimized MFCC designs have simple architectures and can be easily fabricated and used to improve the quality of load-bearing orthopedic scaffolds. STATEMENT OF SIGNIFICANCE: Porous scaffolds are increasingly being studied to repair large bone defects. A scaffold is supposed to withstand mechanical loads and provide an appropriate environment for bone cell growth after implantation. These mechanical and biological requirements are usually contradicting; improving the mechanical performance would require a reduction in porosity and a lower porosity is likely to reduce the biological performance of the scaffold. Various studies have shown that the mechanical and biological performance of bone scaffolds can be improved by internal architecture modification. In this study, we propose two scaffold architectures named MFCC-1 and MFCC-2 and provide an optimization framework to simultaneously optimize their stiffness and permeability to improve their mechanical and biological performances.
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20
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Ghorai SK, Dutta A, Roy T, Guha Ray P, Ganguly D, Ashokkumar M, Dhara S, Chattopadhyay S. Metal Ion Augmented Mussel Inspired Polydopamine Immobilized 3D Printed Osteoconductive Scaffolds for Accelerated Bone Tissue Regeneration. ACS APPLIED MATERIALS & INTERFACES 2022; 14:28455-28475. [PMID: 35715225 DOI: 10.1021/acsami.2c01657] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Critical bone defects with a sluggish rate of auto-osteoconduction and imperfect reconstruction are motivators for the development of an alternate innovative approach for the regeneration of bone. Tissue engineering for bone regeneration signifies an advanced way to overcome this problem by creating an additional bone tissue substitute. Among different fabrication techniques, the 3D printing technique is obviously the most efficient and advanced way to fabricate an osteoconductive scaffold with a controlled porous structure. In the current article, the polycarbonate and polyester diol based polyurethane-urea (P12) was synthesized and 3D porous nanohybrid scaffolds (P12/TP-nHA) were fabricated using the 3D printing technique by incorporating the osteoconductive nanomaterial titanium phosphate adorned nanohydroxyapatite (TP-nHA). To improve the bioactivity, the surface of the fabricated scaffolds was modified with the immobilized biomolecule polydopamine (PDA) at room temperature. XPS study as well as the measurement of surface wettability confirmed the higher amount of PDA immobilization on TP-nHA incorporated nanohybrid scaffolds through the dative bone formation between the vacant d orbital of the incorporated titanium ion and the lone pair electron of the catechol group of dopamine. The incorporated titanium phosphate (TP) increased the tensile strength (53.1%) and elongation at break (96.8%) of the nanohybrid composite as compared to pristine P12. Moreover, the TP incorporated nanohybrid scaffold with calcium and phosphate moieties and a higher amount of immobilized active biomolecule improved the in vitro bioactivity, including the cell viability, cell proliferation, and osteogenic gene expression using hMSCs, of the fabricated nanohybrid scaffolds. A rat tibia defect model depicted that the TP incorporated nanohybrid scaffold with immobilized PDA enhanced the in vivo bone regeneration ability compared to the control sample without revealing any organ toxicity signifying the superior osteogenic bioactivity. Thus, a TP augmented polydopamine immobilized polyurethane-urea based nanohybrid 3D printed scaffold with improved physicochemical properties and osteogenic bioactivity could be utilized as an excellent advanced material for bone regeneration substitute.
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Affiliation(s)
- Sanjoy Kumar Ghorai
- Rubber Technology Centre, Indian Institute of Technology, Kharagpur-721302, India
| | - Abir Dutta
- Advanced Technology Development Centre, Indian Institute of Technology, Kharagpur-721302, India
| | - Trina Roy
- School of Medical Science and Technology, Indian Institute of Technology, Kharagpur-721302, India
| | - Preetam Guha Ray
- School of Medical Science and Technology, Indian Institute of Technology, Kharagpur-721302, India
| | - Debabrata Ganguly
- Rubber Technology Centre, Indian Institute of Technology, Kharagpur-721302, India
| | | | - Santanu Dhara
- School of Medical Science and Technology, Indian Institute of Technology, Kharagpur-721302, India
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21
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Perier-Metz C, Cipitria A, Hutmacher DW, Duda GN, Checa S. An in silico model predicts the impact of scaffold design in large bone defect regeneration. Acta Biomater 2022; 145:329-341. [PMID: 35417799 DOI: 10.1016/j.actbio.2022.04.008] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2022] [Revised: 03/16/2022] [Accepted: 04/06/2022] [Indexed: 12/27/2022]
Abstract
Large bone defects represent a clinical challenge for which the implantation of scaffolds appears as a promising strategy. However, their use in clinical routine is limited, in part due to a lack of understanding of how scaffolds should be designed to support regeneration. Here, we use the power of computer modeling to investigate mechano-biological principles behind scaffold-guided bone regeneration and the influence of scaffold design on the regeneration process. Computer model predictions are compared to experimental data of large bone defect regeneration in sheep. We identified two main key players in scaffold-guided regeneration: (1) the scaffold surface guidance of cellular migration and tissue formation processes and (2) the stimulation of progenitor cell activity by the scaffold material composition. In addition, lower scaffold surface-area-to-volume ratio was found to be beneficial for bone regeneration due to enhanced cellular migration. To a lesser extent, a reduced scaffold Young's modulus favored bone formation. STATEMENT OF SIGNIFICANCE: 3D-printed scaffolds offer promising treatment strategies for large bone defects but their broader clinical use requires a more thorough understanding of their interaction with the bone regeneration process. The predictions of our in silico model compared to two experimental set-ups highlighted the importance of (1) the scaffold surface guidance of cellular migration and tissue formation processes and (2) the scaffold material stimulation of progenitor cell activity. In addition, the model was used to investigate the effect on the bone regeneration process of (1) the scaffold surface-area-to-volume ratio, with lower ratios favoring more bone growth, and (2) the scaffold material properties, with stiffer scaffold materials yielding a lower bone growth.
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Affiliation(s)
- Camille Perier-Metz
- Berlin Institute of Health at Charité - Universitätsmedizin Berlin, Julius Wolff Institute, Augustenburger Platz 1, Berlin 13353, Germany; MINES ParisTech - PSL Research University, 60 Boulevard Saint-Michel, Paris 75272, France; Berlin-Brandenburg School for Regenerative Therapies, Augustenburger Platz 1, Berlin 13353, Germany
| | - Amaia Cipitria
- Department of Biomaterials, Max Planck Institute of Colloids and Interfaces, Am Mühlenberg 1, Potsdam 14476, Germany; Biodonostia Health Research Institute, Pº Dr. Beguiristain s/n, San Sebastian 20014, Spain; IKERBASQUE, Basque Foundation for Science, Plaza Euskadi 5, Bilbao 48009, Spain
| | - Dietmar W Hutmacher
- Center in Regenerative Medicine, Queensland University of Technology (QUT), 60 Musk Avenue, Brisbane, Kelvin Grove QLD 4059, Australia; Science and Engineering Faculty (SEF), School of Mechanical, Medical and Process Engineering (MMPE), QUT, Brisbane QLD 4000, Australia; ARC Training Center for Multiscale 3D Imaging, Modeling, and Manufacturing, Queensland University of Technology, Brisbane QLD 4059, Australia; Center for Biomedical Technologies, Queensland University of Technology, Brisbane QLD 4059, Australia
| | - Georg N Duda
- Berlin Institute of Health at Charité - Universitätsmedizin Berlin, Julius Wolff Institute, Augustenburger Platz 1, Berlin 13353, Germany; Berlin-Brandenburg School for Regenerative Therapies, Augustenburger Platz 1, Berlin 13353, Germany; BIH Center for Regenerative Therapies at Charité, Universitätsmedizin Berlin, Augustenburger Platz 1, Berlin 13353, Germany
| | - Sara Checa
- Berlin Institute of Health at Charité - Universitätsmedizin Berlin, Julius Wolff Institute, Augustenburger Platz 1, Berlin 13353, Germany; Berlin-Brandenburg School for Regenerative Therapies, Augustenburger Platz 1, Berlin 13353, Germany.
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22
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Sivakumar PM, Yetisgin AA, Sahin SB, Demir E, Cetinel S. Bone tissue engineering: Anionic polysaccharides as promising scaffolds. Carbohydr Polym 2022; 283:119142. [DOI: 10.1016/j.carbpol.2022.119142] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2021] [Revised: 12/22/2021] [Accepted: 01/10/2022] [Indexed: 12/21/2022]
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23
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Cornejo J, Cornejo-Aguilar JA, Vargas M, Helguero CG, Milanezi de Andrade R, Torres-Montoya S, Asensio-Salazar J, Rivero Calle A, Martínez Santos J, Damon A, Quiñones-Hinojosa A, Quintero-Consuegra MD, Umaña JP, Gallo-Bernal S, Briceño M, Tripodi P, Sebastian R, Perales-Villarroel P, De la Cruz-Ku G, Mckenzie T, Arruarana VS, Ji J, Zuluaga L, Haehn DA, Paoli A, Villa JC, Martinez R, Gonzalez C, Grossmann RJ, Escalona G, Cinelli I, Russomano T. Anatomical Engineering and 3D Printing for Surgery and Medical Devices: International Review and Future Exponential Innovations. BIOMED RESEARCH INTERNATIONAL 2022; 2022:6797745. [PMID: 35372574 PMCID: PMC8970887 DOI: 10.1155/2022/6797745] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/02/2021] [Revised: 02/16/2022] [Accepted: 02/24/2022] [Indexed: 12/26/2022]
Abstract
Three-dimensional printing (3DP) has recently gained importance in the medical industry, especially in surgical specialties. It uses different techniques and materials based on patients' needs, which allows bioprofessionals to design and develop unique pieces using medical imaging provided by computed tomography (CT) and magnetic resonance imaging (MRI). Therefore, the Department of Biology and Medicine and the Department of Physics and Engineering, at the Bioastronautics and Space Mechatronics Research Group, have managed and supervised an international cooperation study, in order to present a general review of the innovative surgical applications, focused on anatomical systems, such as the nervous and craniofacial system, cardiovascular system, digestive system, genitourinary system, and musculoskeletal system. Finally, the integration with augmented, mixed, virtual reality is analyzed to show the advantages of personalized treatments, taking into account the improvements for preoperative, intraoperative planning, and medical training. Also, this article explores the creation of devices and tools for space surgery to get better outcomes under changing gravity conditions.
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Affiliation(s)
- José Cornejo
- Facultad de Ingeniería, Universidad San Ignacio de Loyola, La Molina, Lima 15024, Peru
- Department of Medicine and Biology & Department of Physics and Engineering, Bioastronautics and Space Mechatronics Research Group, Lima 15024, Peru
| | | | | | | | - Rafhael Milanezi de Andrade
- Robotics and Biomechanics Laboratory, Department of Mechanical Engineering, Universidade Federal do Espírito Santo, Brazil
| | | | | | - Alvaro Rivero Calle
- Department of Oral and Maxillofacial Surgery, Hospital 12 de Octubre, Madrid, Spain
| | - Jaime Martínez Santos
- Department of Neurosurgery, Medical University of South Carolina, Charleston, SC, USA
| | - Aaron Damon
- Department of Neurosurgery, Mayo Clinic, FL, USA
| | | | | | - Juan Pablo Umaña
- Cardiovascular Surgery, Instituto de Cardiología-Fundación Cardioinfantil, Universidad del Rosario, Bogotá DC, Colombia
| | | | - Manolo Briceño
- Villamedic Group, Lima, Peru
- Clínica Internacional, Lima, Peru
| | | | - Raul Sebastian
- Department of Surgery, Northwest Hospital, Randallstown, MD, USA
| | | | - Gabriel De la Cruz-Ku
- Universidad Científica del Sur, Lima, Peru
- Department of Surgery, Mayo Clinic, Rochester, MN, USA
| | | | | | - Jiakai Ji
- Obstetrics and Gynecology, Lincoln Medical and Mental Health Center, Bronx, NY, USA
| | - Laura Zuluaga
- Department of Urology, Fundación Santa Fe de Bogotá, Colombia
| | | | - Albit Paoli
- Howard University Hospital, Washington, DC, USA
| | | | | | - Cristians Gonzalez
- Nouvel Hôpital Civil, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
- Institut of Image-Guided Surgery (IHU-Strasbourg), Strasbourg, France
| | | | - Gabriel Escalona
- Experimental Surgery and Simulation Center, Department of Digestive Surgery, Catholic University of Chile, Santiago, Chile
| | - Ilaria Cinelli
- Aerospace Human Factors Association, Aerospace Medical Association, VA, USA
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24
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Shape optimization of orthopedic porous scaffolds to enhance mechanical performance. J Mech Behav Biomed Mater 2022; 128:105098. [DOI: 10.1016/j.jmbbm.2022.105098] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2021] [Revised: 11/02/2021] [Accepted: 01/17/2022] [Indexed: 11/19/2022]
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25
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Cheikho K, Laurent C, Ganghoffer JF. An advanced method to design graded cylindrical scaffolds with versatile effective cross-sectional mechanical properties. J Mech Behav Biomed Mater 2021; 125:104887. [PMID: 34700106 DOI: 10.1016/j.jmbbm.2021.104887] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2021] [Revised: 09/30/2021] [Accepted: 10/04/2021] [Indexed: 10/20/2022]
Abstract
The selection of the most-suited bone scaffold for a given clinical application is challenging, and has motivated numerous studies. They are mostly based on the characterization of cellular structures, generated from the three-dimensional repetition of a unit cell. However, the interest of circular graded bone scaffolds has been emphasized since they facilitate nutrient transport from the periphery to the core of the scaffold. In the present contribution, we present an advanced and versatile method to design graded circular porous 2D structures based on the conformal mapping of unit cells. We propose a method to generate 3D porous scaffolds by a multilayer repetition of the circular cross-section, resulting in tunable anisotropy depending on the clinical application. We then analyze the link between the porosities of the obtained structures and their effective elastic mechanical cross-sectional properties, making use of a novel and computationally efficient method allowing exhaustive parametric studies. The comparison of various conformal transformations and unit cell designs emphasizes the extent of mechanical properties and porosities that may be reached for a given constitutive material, including non-standard mechanical properties that open large perspectives towards the development of self-fitting scaffolds.
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Affiliation(s)
- K Cheikho
- CNRS UMR 7239 LEM3, Université de Lorraine, Nancy, France.
| | - C Laurent
- CNRS UMR 7239 LEM3, Université de Lorraine, Nancy, France
| | - J F Ganghoffer
- CNRS UMR 7239 LEM3, Université de Lorraine, Nancy, France
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26
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Ren J, Kohli N, Sharma V, Shakouri T, Keskin-Erdogan Z, Saifzadeh S, Brierly GI, Knowles JC, Woodruff MA, García-Gareta E. Poly-ε-Caprolactone/Fibrin-Alginate Scaffold: A New Pro-Angiogenic Composite Biomaterial for the Treatment of Bone Defects. Polymers (Basel) 2021; 13:3399. [PMID: 34641215 PMCID: PMC8512525 DOI: 10.3390/polym13193399] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2021] [Revised: 09/28/2021] [Accepted: 09/29/2021] [Indexed: 12/11/2022] Open
Abstract
We hypothesized that a composite of 3D porous melt-electrowritten poly-ɛ-caprolactone (PCL) coated throughout with a porous and slowly biodegradable fibrin/alginate (FA) matrix would accelerate bone repair due to its angiogenic potential. Scanning electron microscopy showed that the open pore structure of the FA matrix was maintained in the PCL/FA composites. Fourier transform infrared spectroscopy and differential scanning calorimetry showed complete coverage of the PCL fibres by FA, and the PCL/FA crystallinity was decreased compared with PCL. In vitro cell work with osteoprogenitor cells showed that they preferentially bound to the FA component and proliferated on all scaffolds over 28 days. A chorioallantoic membrane assay showed more blood vessel infiltration into FA and PCL/FA compared with PCL, and a significantly higher number of bifurcation points for PCL/FA compared with both FA and PCL. Implantation into a rat cranial defect model followed by microcomputed tomography, histology, and immunohistochemistry after 4- and 12-weeks post operation showed fast early bone formation at week 4, with significantly higher bone formation for FA and PCL/FA compared with PCL. However, this phenomenon was not extrapolated to week 12. Therefore, for long-term bone regeneration, tuning of FA degradation to ensure syncing with new bone formation is likely necessary.
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Affiliation(s)
- Jiongyu Ren
- Faculty of Engineering, Queensland University of Technology, Brisbane, QLD 4059, Australia; (J.R.); (G.I.B.); (M.A.W.)
| | - Nupur Kohli
- Regenerative Biomaterials Group, The RAFT Institute & The Griffin Institute, Northwick Park & Saint Mark’s Hospital, London HA1 3UJ, UK; (N.K.); (V.S.)
- Department of Mechanical Engineering, Imperial College London, London SW7 1AL, UK
| | - Vaibhav Sharma
- Regenerative Biomaterials Group, The RAFT Institute & The Griffin Institute, Northwick Park & Saint Mark’s Hospital, London HA1 3UJ, UK; (N.K.); (V.S.)
| | - Taleen Shakouri
- Division of Biomaterials & Tissue Engineering, Eastman Dental Institute, University College London, Rowland Hill Street, London NW3 2PF, UK; (T.S.); (Z.K.-E.); (J.C.K.)
| | - Zalike Keskin-Erdogan
- Division of Biomaterials & Tissue Engineering, Eastman Dental Institute, University College London, Rowland Hill Street, London NW3 2PF, UK; (T.S.); (Z.K.-E.); (J.C.K.)
| | - Siamak Saifzadeh
- Medical Engineering Research Facility, Queensland University of Technology, Brisbane, QLD 4059, Australia;
| | - Gary I. Brierly
- Faculty of Engineering, Queensland University of Technology, Brisbane, QLD 4059, Australia; (J.R.); (G.I.B.); (M.A.W.)
| | - Jonathan C. Knowles
- Division of Biomaterials & Tissue Engineering, Eastman Dental Institute, University College London, Rowland Hill Street, London NW3 2PF, UK; (T.S.); (Z.K.-E.); (J.C.K.)
- UCL Eastman-Korea Dental Medicine Innovation Centre, Dankook University, Cheonan 31116, Korea
- Department of Nanobiomedical Science & BK21 PLUS NBM Global Research Centre for Regenerative Medicine, Dankook University, Cheonan 31116, Korea
| | - Maria A. Woodruff
- Faculty of Engineering, Queensland University of Technology, Brisbane, QLD 4059, Australia; (J.R.); (G.I.B.); (M.A.W.)
| | - Elena García-Gareta
- Regenerative Biomaterials Group, The RAFT Institute & The Griffin Institute, Northwick Park & Saint Mark’s Hospital, London HA1 3UJ, UK; (N.K.); (V.S.)
- Division of Biomaterials & Tissue Engineering, Eastman Dental Institute, University College London, Rowland Hill Street, London NW3 2PF, UK; (T.S.); (Z.K.-E.); (J.C.K.)
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27
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Juan PK, Fan FY, Lin WC, Liao PB, Huang CF, Shen YK, Ruslin M, Lee CH. Bioactivity and Bone Cell Formation with Poly-ε-Caprolactone/Bioceramic 3D Porous Scaffolds. Polymers (Basel) 2021; 13:2718. [PMID: 34451257 PMCID: PMC8401466 DOI: 10.3390/polym13162718] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2021] [Revised: 08/10/2021] [Accepted: 08/10/2021] [Indexed: 01/01/2023] Open
Abstract
This study applied poly-ε-caprolactone (PCL), a biomedical ceramic powder as an additive (nano-hydroxyapatite (nHA) or β-tricalcium diphosphate (β-TCP)), and sodium chloride (NaCl) and ammonium bicarbonate ((NH4)HCO3) as porogens; these stuffs were used as scaffold materials. An improved solvent-casting/particulate-leaching method was utilized to fabricate 3D porous scaffolds. In this study we examined the physical properties (elastic modulus, porosity, and contact angle) and degradation properties (weight loss and pH value) of the 3D porous scaffolds. Both nHA and β-TCP improved the mechanical properties (elastic modulus) of the 3D porous scaffolds. The elastic modulus (0.15~1.865 GPa) of the various composite scaffolds matched that of human cancellous bone (0.1~4.5 GPa). Osteoblast-like (MG63) cells were cultured, a microculture tetrazolium test (MTT) was conducted and alkaline phosphatase (ALP) activity of the 3D porous scaffolds was determined. Experimental results indicated that both nHA and β-TCP powder improved the hydrophilic properties of the scaffolds. The degradation rate of the scaffolds was accelerated by adding nHA or β-TCP. The MTT and ALP activity tests indicated that the scaffolds with a high ratio of nHA or β-TCP had excellent properties of in vitro biocompatibility (cell attachment and proliferation).
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Affiliation(s)
- Po-Kai Juan
- Division of Prosthodontics, Department of Dentistry, Taipei Medical University Hospital, Taipei 11031, Taiwan; (P.-K.J.); (P.-B.L.)
| | - Fang-Yu Fan
- School of Dental Technology, College of Oral Medicine, Taipei Medical University, Taipei 11031, Taiwan; (F.-Y.F.); (W.-C.L.); (C.-F.H.)
| | - Wei-Chun Lin
- School of Dental Technology, College of Oral Medicine, Taipei Medical University, Taipei 11031, Taiwan; (F.-Y.F.); (W.-C.L.); (C.-F.H.)
| | - Pei-Bang Liao
- Division of Prosthodontics, Department of Dentistry, Taipei Medical University Hospital, Taipei 11031, Taiwan; (P.-K.J.); (P.-B.L.)
| | - Chiung-Fang Huang
- School of Dental Technology, College of Oral Medicine, Taipei Medical University, Taipei 11031, Taiwan; (F.-Y.F.); (W.-C.L.); (C.-F.H.)
- Division of Family and Operative Dentistry, Department of Dentistry, Taipei Medical University Hospital, Taipei 11031, Taiwan
| | - Yung-Kang Shen
- School of Dental Technology, College of Oral Medicine, Taipei Medical University, Taipei 11031, Taiwan; (F.-Y.F.); (W.-C.L.); (C.-F.H.)
| | - Muhammad Ruslin
- Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, Hasanuddin University, Makassar 90245, Indonesia;
| | - Chen-Han Lee
- Taiwan Society of Blood Biomaterials, New Taipei City 221, Taiwan;
- School of Dentistry, College of Oral Medicine, Taipei Medical University, Taipei 110, Taiwan
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28
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Lui H, Samsonraj RM, Vaquette C, Denbeigh J, Kakar S, Cool SM, Dudakovic A, van Wijnen AJ. Combination of BMP2 and EZH2 Inhibition to Stimulate Osteogenesis in a 3D Bone Reconstruction Model. Tissue Eng Part A 2021; 27:1084-1098. [PMID: 33234056 PMCID: PMC8851245 DOI: 10.1089/ten.tea.2020.0218] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2020] [Accepted: 10/29/2020] [Indexed: 12/14/2022] Open
Abstract
High concentrations of bone morphogenetic protein 2 (BMP2) in bone regeneration cause adverse events (e.g, heterotopic bone formation and acute inflammation). This study examines novel epigenetic strategies (i.e., EZH2 inhibition) for augmenting osteogenesis, thereby aiming to reduce the required BMP2 dose in vivo for bone regeneration and minimize these adverse effects. Human bone marrow-derived mesenchymal stem cells (BMSCs) were grown on three-dimensional (3D)-printed medical-grade polycaprolactone scaffolds and incubated in osteogenic media containing 50 ng/mL BMP2 and/or 5 μM GSK126 (EZH2 inhibitor) for 6 days (n = 3 per group and timepoint). Constructs were harvested for realtime quantitative polymerase chain reaction analysis at Day 10 and immunofluorescence (IF) microscopy at Day 21. After pretreating for 6 days and maintaining in osteogenic media for 4 days, BMSC-seeded scaffolds were also implanted in an immunocompromised subcutaneous murine model (n = 39; 3/group/donor and 3 control scaffolds) for histological analysis at 8 weeks. Pretreatment of BMSCs with BMP2 and BMP2/GSK126 costimulated expression of osteoblast-related genes (e.g., IBSP, SP7, RUNX2, and DLX5), as well as protein accumulation (e.g., collagen type 1/COL1A1 and osteocalcin/BGLAP) based on IF staining. While in vivo implantation for 8 weeks did not result in bone formation, increased angiogenesis was observed in BMP2 and BMP2/GSK126 groups. This study finds that BMP2 and GSK126 costimulate osteogenic differentiation of MSCs on 3D scaffolds in vitro and may contribute to enhanced vascularization when implanted in vivo to support bone formation. Thus, epigenetic priming with EZH2 inhibitors may have translational potential in bone healing by permitting a reduction of BMP2 dosing in vivo to mitigate its side effects. Impact statement While autografts are still the gold standard for bone reconstruction, tissue availability and donor morbidity are significant limitations. Previous attempts to use high concentrations of bone morphogenetic protein 2 (BMP2) have been shown to cause adverse events such as excessive bone formation and acute inflammation. Overall, the utilization of EZH2 inhibitors to modulate gene expression in favor of bone healing has been demonstrated in vitro in a tissue engineering strategy. Our study will pave the way to developing tissue engineering strategies involving GSK126 as an adjuvant to increase the effects of BMP2 for stimulating cells of interest on a three-dimensional scaffold for bone regeneration.
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Affiliation(s)
- Hayman Lui
- School of Medicine, Griffith University, Gold Coast, Queensland, Australia
- Department of Orthopedic Surgery, Mayo Clinic, Rochester, Minnesota, USA
- Department of Biochemistry and Molecular Biology, Mayo Clinic, Rochester, Minnesota, USA
| | - Rebekah M. Samsonraj
- Department of Orthopedic Surgery, Mayo Clinic, Rochester, Minnesota, USA
- Department of Biochemistry and Molecular Biology, Mayo Clinic, Rochester, Minnesota, USA
| | - Cedryck Vaquette
- School of Dentistry, The University of Queensland, Brisbane, Queensland, Australia
| | - Janet Denbeigh
- Department of Orthopedic Surgery, Mayo Clinic, Rochester, Minnesota, USA
- Department of Biochemistry and Molecular Biology, Mayo Clinic, Rochester, Minnesota, USA
| | - Sanjeev Kakar
- Department of Orthopedic Surgery, Mayo Clinic, Rochester, Minnesota, USA
| | - Simon M. Cool
- Glycotherapeutics Group, Institute of Medical Biology, Agency for Science, Technology and Research (A*STAR), Singapore, Singapore
| | - Amel Dudakovic
- Department of Orthopedic Surgery, Mayo Clinic, Rochester, Minnesota, USA
- Department of Biochemistry and Molecular Biology, Mayo Clinic, Rochester, Minnesota, USA
| | - Andre J. van Wijnen
- Department of Orthopedic Surgery, Mayo Clinic, Rochester, Minnesota, USA
- Department of Biochemistry and Molecular Biology, Mayo Clinic, Rochester, Minnesota, USA
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29
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Rana M, Chaudhuri A, Biswas JK, Karim SI, Datta P, Karmakar SK, Roychowdhury A. Design of patient specific bone stiffness mimicking scaffold. Proc Inst Mech Eng H 2021; 235:1453-1462. [PMID: 34227419 DOI: 10.1177/09544119211030715] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The difference in stiffness of a patient's bone and bone implant causes stress shielding. Thus, implants which match the stiffness of bone of the patient result in better bone growth and osseointegration. Variation in porosity is one of the methods to obtain implants with different stiffness values. This study proposes a novel method to design biomimetic bone graft implant based on computed tomography (CT) scan data, that creates similar pre- and post-implant mechanical environment on peri-implant bone. The design methodology is demonstrated by taking three different sections of human femur bone, greater trochanter, diaphysis and epicondyle, with two different implant materials, Ti-6Al-4V and Ti-Mg. Bones from these three sections were replaced with porous implants of effective stiffness of replaced bone, as would have been required after a resection surgery. Models were simulated with physiological loading condition using finite element (FE) method. Variation of maximum von Mises stress and average strain on peri-prosthetic bone were found to be in the range of -6% to 10.7% and -7% to -17.9% for porous implants and 26% to 50% and -36% to -59% for solid implant respectively compared to natural bone. The results revealed that the porous implants, which have been designed based on CT scan data, can effectively produce mechanical response at peri-implant bone, which is very close to pre-implanted condition. Following this methodology, more osseointegration friendly mechanical environment can be achieved at peri-implant bone for any anatomical location independent of implant materials.
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Affiliation(s)
- Masud Rana
- Department of Aerospace Engineering & Applied Mechanics, Indian Institute of Engineering Science & Technology, Shibpur, Howrah, India
| | - Abhik Chaudhuri
- Department of Mechanical Engineering, Indian Institute of Technology (Indian School of Mines), Dhanbad, India
| | - Jayanta Kumar Biswas
- Department of Mechanical Engineering, National Institute of Technology Patna, Patna, Bihar, India
| | - Sk Imran Karim
- Department of Mechanical Engineering, Regent Education and Research Foundation, Kolkata, West Bengal, India
| | - Pallab Datta
- Centre for Healthcare Science and Technology, Indian Institute of Engineering Science & Technology, Shibpur, Howrah, India
| | - Santanu Kumar Karmakar
- Department of Mechanical Engineering, Indian Institute of Engineering Science & Technology, Shibpur, Howrah, India
| | - Amit Roychowdhury
- Department of Aerospace Engineering & Applied Mechanics, Indian Institute of Engineering Science & Technology, Shibpur, Howrah, India
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30
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Perier-Metz C, Duda GN, Checa S. Initial mechanical conditions within an optimized bone scaffold do not ensure bone regeneration - an in silico analysis. Biomech Model Mechanobiol 2021; 20:1723-1731. [PMID: 34097188 PMCID: PMC8450217 DOI: 10.1007/s10237-021-01472-2] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2021] [Accepted: 05/28/2021] [Indexed: 11/26/2022]
Abstract
Large bone defects remain a clinical challenge because they do not heal spontaneously. 3-D printed scaffolds are a promising treatment option for such critical defects. Recent scaffold design strategies have made use of computer modelling techniques to optimize scaffold design. In particular, scaffold geometries have been optimized to avoid mechanical failure and recently also to provide a distinct mechanical stimulation to cells within the scaffold pores. This way, mechanical strain levels are optimized to favour the bone tissue formation. However, bone regeneration is a highly dynamic process where the mechanical conditions immediately after surgery might not ensure optimal regeneration throughout healing. Here, we investigated in silico whether scaffolds presenting optimal mechanical conditions for bone regeneration immediately after surgery also present an optimal design for the full regeneration process. A computer framework, combining an automatic parametric scaffold design generation with a mechano-biological bone regeneration model, was developed to predict the level of regenerated bone volume for a large range of scaffold designs and to compare it with the scaffold pore volume fraction under favourable mechanical stimuli immediately after surgery. We found that many scaffold designs could be considered as highly beneficial for bone healing immediately after surgery; however, most of them did not show optimal bone formation in later regenerative phases. This study allowed to gain a more thorough understanding of the effect of scaffold geometry changes on bone regeneration and how to maximize regenerated bone volume in the long term.
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Affiliation(s)
- Camille Perier-Metz
- Julius Wolff Institute, Berlin Institute of Health at Charité - Universitätsmedizin Berlin, Berlin, Germany
- MINES ParisTech - PSL Research University, Paris, France
| | - Georg N Duda
- Julius Wolff Institute, Berlin Institute of Health at Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - Sara Checa
- Julius Wolff Institute, Berlin Institute of Health at Charité - Universitätsmedizin Berlin, Berlin, Germany.
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31
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32
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Perier-Metz C, Duda GN, Checa S. Mechano-Biological Computer Model of Scaffold-Supported Bone Regeneration: Effect of Bone Graft and Scaffold Structure on Large Bone Defect Tissue Patterning. Front Bioeng Biotechnol 2020; 8:585799. [PMID: 33262976 PMCID: PMC7686036 DOI: 10.3389/fbioe.2020.585799] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2020] [Accepted: 10/05/2020] [Indexed: 12/04/2022] Open
Abstract
Large segmental bone defects represent a clinical challenge for which current treatment procedures have many drawbacks. 3D-printed scaffolds may help to support healing, but their design process relies mainly on trial and error due to a lack of understanding of which scaffold features support bone regeneration. The aim of this study was to investigate whether existing mechano-biological rules of bone regeneration can also explain scaffold-supported bone defect healing. In addition, we examined the distinct roles of bone grafting and scaffold structure on the regeneration process. To that end, scaffold-surface guided migration and tissue deposition as well as bone graft stimulatory effects were included in an in silico model and predictions were compared to in vivo data. We found graft osteoconductive properties and scaffold-surface guided extracellular matrix deposition to be essential features driving bone defect filling in a 3D-printed honeycomb titanium structure. This knowledge paves the way for the design of more effective 3D scaffold structures and their pre-clinical optimization, prior to their application in scaffold-based bone defect regeneration.
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Affiliation(s)
- Camille Perier-Metz
- Julius Wolff Institute, Charité-Universitätsmedizin, Berlin, Germany.,MINES ParisTech - PSL Research University (Paris Sciences & Lettres), Paris, France
| | - Georg N Duda
- Julius Wolff Institute, Charité-Universitätsmedizin, Berlin, Germany.,Berlin Institute of Health (BIH) Center for Regenerative Therapies, Charité-Universitätsmedizin, Berlin, Germany
| | - Sara Checa
- Julius Wolff Institute, Charité-Universitätsmedizin, Berlin, Germany
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33
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de Lacerda Schickert S, van den Beucken JJ, Leeuwenburgh SC, Jansen JA. Pre-Clinical Evaluation of Biological Bone Substitute Materials for Application in Highly Loaded Skeletal Sites. Biomolecules 2020; 10:E883. [PMID: 32526829 PMCID: PMC7356650 DOI: 10.3390/biom10060883] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2020] [Revised: 05/31/2020] [Accepted: 06/02/2020] [Indexed: 12/27/2022] Open
Abstract
The development of bone substitute materials (BSMs) intended for load-bearing bone defects is highly complicated, as biological and mechanical requirements are often contradictory. In recent years, biological BSMs have been developed which allow for a more efficient integration of the material with the surrounding osseous environment and, hence, a higher mechanical stability of the treated defect. However, while these materials are promising, they are still far from ideal. Consequently, extensive preclinical experimentation is still required. The current review provides a comprehensive overview of biomechanical considerations relevant for the design of biological BSMs. Further, the preclinical evaluation of biological BSMs intended for application in highly loaded skeletal sites is discussed. The selected animal models and implantation site should mimic the pathophysiology and biomechanical loading patterns of human bone as closely as possible. In general, sheep are among the most frequently selected animal models for the evaluation of biomaterials intended for highly loaded skeletal sites. Regarding the anatomical sites, segmental bone defects created in the limbs and spinal column are suggested as the most suitable. Furthermore, the outcome measurements used to assess biological BSMs for regeneration of defects in heavily loaded bone should be relevant and straightforward. The quantitative evaluation of bone defect healing through ex vivo biomechanical tests is a valuable addition to conventional in vivo tests, as it determines the functional efficacy of BSM-induced bone healing. Finally, we conclude that further standardization of preclinical studies is essential for reliable evaluation of biological BSMs in highly loaded skeletal sites.
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Affiliation(s)
| | | | | | - John A. Jansen
- Department of Dentistry—Regenerative Biomaterials, Radboud Institute for Molecular Life Sciences, Radboud University Medical Center, Philips van Leydenlaan 25, 6525EX Nijmegen, The Netherlands; (S.d.L.S.); (J.J.J.P.v.d.B.); (S.C.G.L.)
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34
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Hallman M, Driscoll JA, Lubbe R, Jeong S, Chang K, Haleem M, Jakus A, Pahapill R, Yun C, Shah R, Hsu WK, Stock SR, Hsu EL. Influence of Geometry and Architecture on the In Vivo Success of 3D-Printed Scaffolds for Spinal Fusion. Tissue Eng Part A 2020; 27:26-36. [PMID: 32098585 DOI: 10.1089/ten.tea.2020.0004] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
We previously developed a recombinant growth factor-free, three-dimensional (3D)-printed material comprising hydroxyapatite (HA) and demineralized bone matrix (DBM) for bone regeneration. This material has demonstrated the capacity to promote re-mineralization of the DBM particles within the scaffold struts and shows potential to promote successful spine fusion. Here, we investigate the role of geometry and architecture in osteointegration, vascularization, and facilitation of spine fusion in a preclinical model. Inks containing HA and DBM particles in a poly(lactide-co-glycolide) elastomer were 3D-printed into scaffolds with varying relative strut angles (90° vs. 45° advancing angle), macropore size (0 μm vs. 500 μm vs. 1000 μm), and strut alignment (aligned vs. offset). The following configurations were compared with scaffolds containing no macropores: 90°/500 μm/aligned, 45°/500 μm/aligned, 90°/1000 μm/aligned, 45°/1000 μm/aligned, 90°/1000 μm/offset, and 45°/1000 μm/offset. Eighty-four female Sprague-Dawley rats underwent spine fusion with bilateral placement of the various scaffold configurations (n = 12/configuration). Osteointegration and vascularization were assessed by using microComputed Tomography and histology, and spine fusion was assessed via blinded manual palpation. The 45°/1000 μm scaffolds with aligned struts achieved the highest average fusion score (1.61/2) as well as the highest osteointegration score. Both the 45°/1000 μm/aligned and 90°/1000 μm/aligned scaffolds elicited fusion rates of 100%, which was significantly greater than the 45°/500 μm/aligned iteration (p < 0.05). All porous scaffolds were fully vascularized, with blood vessels present in every macropore. Vessels were also observed extending from the native transverse process bone, through the protrusions of new bone, and into the macropores of the scaffolds. When viewed independently, scaffolds printed with relative strut angles of 45° and 90° each allowed for osteointegration sufficient to stabilize the spine at L4-L5. Within those parameters, a pore size of 500 μm or greater was generally sufficient to achieve unilateral fusion. However, our results suggest that scaffolds printed with the larger pore size and with aligned struts at an advancing angle of 45° may represent the optimal configuration to maximize osteointegration and fusion capacity. Overall, this work suggests that the HA/DBM composite scaffolds provide a conducive environment for bone regeneration as well as vascular infiltration. This technology, therefore, represents a novel, growth-factor-free biomaterial with significant potential as a bone graft substitute for use in spinal surgery. Impact statement We previously developed a recombinant growth factor-free, three-dimensional (3D)-printed composite material comprising hydroxyapatite and demineralized bone matrix for bone regeneration. Here, we identify a range of 3D geometric and architectural parameters that support the preclinical success of the scaffold, including efficient vascularization, osteointegration, and, ultimately, spinal fusion. Our results suggest that this material holds great promise as a clinically translatable biomaterial for use as a bone graft substitute in orthopedic procedures requiring bone regeneration.
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Affiliation(s)
- Mitchell Hallman
- Northwestern University Department of Orthopaedic Surgery, Chicago, Illinois, USA.,Simpson Querrey Institute, Chicago, Illinois, USA
| | - J Adam Driscoll
- Northwestern University Department of Orthopaedic Surgery, Chicago, Illinois, USA.,Simpson Querrey Institute, Chicago, Illinois, USA
| | - Ryan Lubbe
- Northwestern University Department of Orthopaedic Surgery, Chicago, Illinois, USA.,Simpson Querrey Institute, Chicago, Illinois, USA
| | - Soyeon Jeong
- Northwestern University Department of Orthopaedic Surgery, Chicago, Illinois, USA.,Simpson Querrey Institute, Chicago, Illinois, USA
| | - Kevin Chang
- Northwestern University Department of Orthopaedic Surgery, Chicago, Illinois, USA.,Simpson Querrey Institute, Chicago, Illinois, USA
| | - Meraaj Haleem
- Northwestern University Department of Orthopaedic Surgery, Chicago, Illinois, USA.,Simpson Querrey Institute, Chicago, Illinois, USA
| | - Adam Jakus
- Simpson Querrey Institute, Chicago, Illinois, USA.,Northwestern University Department of Materials Science and Engineering, Evanston, Illinois, USA.,Transplant Division, Northwestern University Department of Surgery, Chicago, Illinois, USA
| | - Richard Pahapill
- Northwestern University Department of Orthopaedic Surgery, Chicago, Illinois, USA.,Simpson Querrey Institute, Chicago, Illinois, USA
| | - Chawon Yun
- Northwestern University Department of Orthopaedic Surgery, Chicago, Illinois, USA.,Simpson Querrey Institute, Chicago, Illinois, USA
| | - Ramille Shah
- Simpson Querrey Institute, Chicago, Illinois, USA.,Northwestern University Department of Materials Science and Engineering, Evanston, Illinois, USA.,Transplant Division, Northwestern University Department of Surgery, Chicago, Illinois, USA.,Orthopaedic Research Laboratory, Beaumont Health, Royal Oak, Michigan, USA.,Northwestern University Department of Biomedical Engineering, Evanston, Illinois, USA
| | - Wellington K Hsu
- Northwestern University Department of Orthopaedic Surgery, Chicago, Illinois, USA.,Simpson Querrey Institute, Chicago, Illinois, USA
| | - Stuart R Stock
- Simpson Querrey Institute, Chicago, Illinois, USA.,Argonne National Laboratory, Argonne, Illinois, USA.,Northwestern University Department of Cell and Molecular Biology, Chicago, Illinois, USA
| | - Erin L Hsu
- Northwestern University Department of Orthopaedic Surgery, Chicago, Illinois, USA.,Simpson Querrey Institute, Chicago, Illinois, USA
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35
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Sparks DS, Saifzadeh S, Savi FM, Dlaska CE, Berner A, Henkel J, Reichert JC, Wullschleger M, Ren J, Cipitria A, McGovern JA, Steck R, Wagels M, Woodruff MA, Schuetz MA, Hutmacher DW. A preclinical large-animal model for the assessment of critical-size load-bearing bone defect reconstruction. Nat Protoc 2020; 15:877-924. [PMID: 32060491 DOI: 10.1038/s41596-019-0271-2] [Citation(s) in RCA: 64] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2019] [Accepted: 11/11/2019] [Indexed: 12/31/2022]
Abstract
Critical-size bone defects, which require large-volume tissue reconstruction, remain a clinical challenge. Bone engineering has the potential to provide new treatment concepts, yet clinical translation requires anatomically and physiologically relevant preclinical models. The ovine critical-size long-bone defect model has been validated in numerous studies as a preclinical tool for evaluating both conventional and novel bone-engineering concepts. With sufficient training and experience in large-animal studies, it is a technically feasible procedure with a high level of reproducibility when appropriate preoperative and postoperative management protocols are followed. The model can be established by following a procedure that includes the following stages: (i) preoperative planning and preparation, (ii) the surgical approach, (iii) postoperative management, and (iv) postmortem analysis. Using this model, full results for peer-reviewed publication can be attained within 2 years. In this protocol, we comprehensively describe how to establish proficiency using the preclinical model for the evaluation of a range of bone defect reconstruction options.
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Affiliation(s)
- David S Sparks
- Centre in Regenerative Medicine, Institute of Health and Biomedical Innovation, Queensland University of Technology, Kelvin Grove, Queensland, Australia.,Department of Plastic & Reconswrapping a sterile Coban wrap around the limb distallytructive Surgery, Princess Alexandra Hospital, Woolloongabba, Queensland, Australia.,Southside Clinical Division, School of Medicine, University of Queensland, Woolloongabba, Queensland, Australia
| | - Siamak Saifzadeh
- Centre in Regenerative Medicine, Institute of Health and Biomedical Innovation, Queensland University of Technology, Kelvin Grove, Queensland, Australia.,Medical Engineering Research Facility, Queensland UCoban wrap only comes non-sterile. Sterilize Coban wrap before use.niversity of Technology, Chermside, Queensland, Australia
| | - Flavia Medeiros Savi
- Centre in Regenerative Medicine, Institute of Health and Biomedical Innovation, Queensland University of Technology, Kelvin Grove, Queensland, Australia.,ARC Centre for Additive Biomanufactthe mounting resin base cement. Use it only in a laboratory fume cabinet and withuring, Queensland University of Technology, Kelvin Grove, Queensland, Australia
| | - Constantin E Dlaska
- Centre in Regenerative Medicine, Institute of Health and Biomedical Innovation, Queensland University of Technology, Kelvin Grove, Queensland, Australia.,Jamieson Trauma Institute, Royal Brisbane Hospital, Herston, Queensland, Australia
| | - Arne Berner
- Centre in Regenerative Medicine, Institute of Health and Biomedical Innovation, Queensland University of Technology, Kelvin Grove, Queensland, Australia.,Department of Trauma Surgery, University Hospital of Regensburg, Regensburg, Germany
| | - Jan Henkel
- Centre in Regenerative Medicine, Institute of Health and Biomedical Innovation, Queensland University of Technology, Kelvin Grove, Queensland, Australia
| | - Johannes C Reichert
- Department of Orthopaedic Surgery, Center for Musculoskeletal Research, König-Ludwig-Haus, Julius-Maximilians-University, Würzburg, Germany.,Department of Orthopaedic and Trauma Surgery, Evangelisches Waldkrankenhaus Spandau, Berlin, Germany
| | - Martin Wullschleger
- Jamieson Trauma Institute, Royal Brisbane Hospital, Herston, Queensland, Australia.,Griffith University, School of Medicine, Southport, Queensland, Australia
| | - Jiongyu Ren
- Centre in Regenerative Medicine, Institute of Health and Biomedical Innovation, Queensland University of Technology, Kelvin Grove, Queensland, Australia
| | - Amaia Cipitria
- Department of Biomaterials, Max Planck Institute of Colloids and Interfaces, Potsdam, Germany
| | - Jacqui A McGovern
- Centre in Regenerative Medicine, Institute of Health and Biomedical Innovation, Queensland University of Technology, Kelvin Grove, Queensland, Australia
| | - Roland Steck
- Medical Engineering Research Facility, Queensland UCoban wrap only comes non-sterile. Sterilize Coban wrap before use.niversity of Technology, Chermside, Queensland, Australia
| | - Michael Wagels
- Department of Plastic & Reconswrapping a sterile Coban wrap around the limb distallytructive Surgery, Princess Alexandra Hospital, Woolloongabba, Queensland, Australia.,Southside Clinical Division, School of Medicine, University of Queensland, Woolloongabba, Queensland, Australia.,Australian Centre for Complex Integrated Surgical Solutions (ACCISS), Princess Alexandra Hospital, Woolloongabba, Queensland, Australia
| | - Maria Ann Woodruff
- ARC Centre for Additive Biomanufactthe mounting resin base cement. Use it only in a laboratory fume cabinet and withuring, Queensland University of Technology, Kelvin Grove, Queensland, Australia.,Biofabrication and Tissue Morphology Group, Institute of Health and Biomedical Innovation, Queensland University of Technology, Kelvin Grove, Queensland, Australia
| | - Michael A Schuetz
- Centre in Regenerative Medicine, Institute of Health and Biomedical Innovation, Queensland University of Technology, Kelvin Grove, Queensland, Australia.,Jamieson Trauma Institute, Royal Brisbane Hospital, Herston, Queensland, Australia
| | - Dietmar W Hutmacher
- Centre in Regenerative Medicine, Institute of Health and Biomedical Innovation, Queensland University of Technology, Kelvin Grove, Queensland, Australia. .,ARC Centre for Additive Biomanufactthe mounting resin base cement. Use it only in a laboratory fume cabinet and withuring, Queensland University of Technology, Kelvin Grove, Queensland, Australia.
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36
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Weber FE. Reconsidering Osteoconduction in the Era of Additive Manufacturing. TISSUE ENGINEERING. PART B, REVIEWS 2019; 25:375-386. [PMID: 30997857 PMCID: PMC6784493 DOI: 10.1089/ten.teb.2019.0047] [Citation(s) in RCA: 53] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/11/2019] [Accepted: 04/17/2019] [Indexed: 02/06/2023]
Abstract
Bone regeneration procedures in clinics and bone tissue engineering stand on three pillars: osteoconduction, osteoinduction, and stem cells. In the last two decades, the focus in this field has been on osteoinduction, which is realized by the use of bone morphogenetic proteins and the application of mesenchymal stem cells to treat bone defects. However, osteoconduction was reduced to a surface phenomenon because the supposedly ideal pore size of osteoconductive scaffolds was identified in the 1990s as 0.3-0.5 mm in diameter, forcing bone formation to occur predominantly on the surface. Meanwhile, additive manufacturing has evolved as a new tool to realize designed microarchitectures in bone substitutes, thereby enabling us to study osteoconduction as a true three-dimensional phenomenon. Moreover, by additive manufacturing, wide-open porous scaffolds can be produced in which bone formation occurs distant to the surface at a superior bony defect-bridging rate enabled by highly osteoconductive pores 1.2 mm in diameter. This review provides a historical overview and an updated definition of osteoconduction and related terms. In addition, it shows how additive manufacturing can be instrumental in studying and optimizing osteoconduction of bone substitutes, and provides novel optimized features and boundaries of osteoconductive microarchitectures. Impact Statement This review updates the definition of osteoconduction and draws clear lines to discriminate between osteoconduction, osseointegration, and osteoinduction. Moreover, additively manufactured libraries of scaffolds revealed that: osteoconduction is more a three-dimensional than a surface phenomenon; microarchitecture dictates defect bridging, which is the measure for osteoconduction; pore diameter or the diagonal of lattice microarchitectures of osteoconductive bone substitutes should be ∼1.2 mm.
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Affiliation(s)
- Franz E. Weber
- Oral Biotechnology and Bioengineering, Center of Dental Medicine Department of Cranio-Maxillofacial and Oral Surgery, University of Zurich, Zurich, Switzerland
- Center for Applied Biotechnology and Molecular Medicine (CABMM), University of Zurich, Zurich, Switzerland
- Zurich Center for Integrative Human Physiology (ZIHP), University of Zurich, Zurich, Switzerland
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37
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Tilton M, Armstrong A, Sanville J, Chin M, Hast MW, Lewis GS, Manogharan GP. Biomechanical Testing of Additive Manufactured Proximal Humerus Fracture Fixation Plates. Ann Biomed Eng 2019; 48:463-476. [PMID: 31555983 DOI: 10.1007/s10439-019-02365-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2019] [Accepted: 09/12/2019] [Indexed: 01/24/2023]
Abstract
Achieving satisfactory fracture fixation in osteoporotic patients with unstable proximal humerus fractures remains a major clinical challenge. Varus collapse is one of the more prominent complications that may lead to screw cutout. This aim of this study was to compare the fixation provided by conventional locking plates with novel design concepts that are only feasible through additive manufacturing (AM) techniques. In addition to reversed engineered implants, two novel implant designs with integrated struts were included in the study to provide medial support to humeral head. The medial strut was either solid or included a porous lattice structure intended to promote bone ingrowth. Biomechanical tests were performed using low density synthetic bones with simulated 3-part comminuted fractures. Nondestructive torsion and compression were performed, followed by increasing cyclic loading. The relative displacements between the bone fragments were determined using a 3D motion capture system. The AM manufactured implants with medial strut showed significant reduction of varus displacement during the increasing cyclic loading when compared to conventional designs. AM reversed-engineered locking plates showed similar mechanical behavior to conventional plates with identical geometry. This study demonstrates the feasibility and potential of employing alternative design via AM for fixation of unstable comminuted proximal humerus fractures to reduce fragment displacement.
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Affiliation(s)
- Maryam Tilton
- Department of Mechanical Engineering, Pennsylvania State University, 232 Reber Bldg, University Park, PA, 16802, USA
| | - April Armstrong
- Department of Orthopaedics and Rehabilitation, Pennsylvania State University College of Medicine, Hershey, PA, USA
| | - Jennifer Sanville
- Biedermann Lab for Orthopaedic Research, Department of Orthopaedic Surgery, University of Pennsylvania, Philadelphia, PA, USA
| | - Matthew Chin
- Biedermann Lab for Orthopaedic Research, Department of Orthopaedic Surgery, University of Pennsylvania, Philadelphia, PA, USA
| | - Michael W Hast
- Biedermann Lab for Orthopaedic Research, Department of Orthopaedic Surgery, University of Pennsylvania, Philadelphia, PA, USA
| | - Gregory S Lewis
- Department of Orthopaedics and Rehabilitation, Pennsylvania State University College of Medicine, Hershey, PA, USA
| | - Guha P Manogharan
- Department of Mechanical Engineering, Pennsylvania State University, 232 Reber Bldg, University Park, PA, 16802, USA.
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38
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Rousselle SD, Ramot Y, Nyska A, Jackson ND. Pathology of Bioabsorbable Implants in Preclinical Studies. Toxicol Pathol 2019; 47:358-378. [DOI: 10.1177/0192623318816681] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
Bioabsorbable implants can be advantageous for certain surgical tissue bioengineering applications and implant-assisted tissue repair. They offer the obvious benefits of nonpermanence and eventual restoration of the native tissue’s biomechanical and immunological properties, while providing a structural scaffold for healing and a route for additional therapies (i.e., drug elution). They present unique developmental, imaging, and histopathological challenges in the conduct of preclinical animal studies and in interpretation of pathology data. The bioabsorption process is typically associated with a gradual decline (over months to years) in structural strength and integrity and may also be associated with cellular responses such as phagocytosis that may confound interpretation of efficacy and safety end points. Additionally, as these implants bioabsorb, they become increasingly difficult to isolate histologically and thus imaging modalities such as microCT become very valuable to determine the original location of the implants and to assess the remodeling response in tandem with histopathology. In this article, we will review different types of bioabsorbable implants and commonly used bioabsorbable materials; additionally, we will address some of the most common challenges and pitfalls confronting histologists and pathologists in collecting, handling, imaging, preparing tissues through histology, evaluating, and interpreting study data associated with bioabsorbable implants.
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Affiliation(s)
| | - Yuval Ramot
- Hadassah—Hebrew University Medical Center, Jerusalem, Israel
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39
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Entezari A, Roohani I, Li G, Dunstan CR, Rognon P, Li Q, Jiang X, Zreiqat H. Architectural Design of 3D Printed Scaffolds Controls the Volume and Functionality of Newly Formed Bone. Adv Healthc Mater 2019; 8:e1801353. [PMID: 30536610 DOI: 10.1002/adhm.201801353] [Citation(s) in RCA: 52] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2018] [Revised: 11/17/2018] [Indexed: 02/01/2023]
Abstract
The successful regeneration of functional bone tissue in critical-size defects remains a significant clinical challenge. To address this challenge, synthetic bone scaffolds are widely developed, but remarkably few are translated to the clinic due to poor performance in vivo. Here, it is demonstrated how architectural design of 3D printed scaffolds can improve in vivo outcomes. Ceramic scaffolds with different pore sizes and permeabilities, but with similar porosity and interconnectivity, are implanted in rabbit calvaria for 12 weeks, and then the explants are harvested for microcomputed tomography evaluation of the volume and functionality of newly formed bone. The results indicate that scaffold pores should be larger than 390 µm with an upper limit of 590 µm to enhance bone formation. It is also demonstrated that a bimodal pore topology-alternating large and small pores-enhances the volume and functionality of new bone substantially. Moreover, bone formation results indicate that stiffness of new bone is highly influenced by the scaffold's permeability in the direction concerned. This study demonstrates that manipulating pore size and permeability in a 3D printed scaffold architecture provides a useful strategy for enhancing bone regeneration outcomes.
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Affiliation(s)
- Ali Entezari
- Australian Research Council Centre in Innovative BioEngineering School of Aerospace Mechanical and Mechatronic Engineering University of Sydney NSW 2006 Australia
- Shanghai‐Sydney Joint Bioengineering and Regenerative Medicine Lab at Shanghai JiaoTong Shanghai 200011 China
| | - Iman Roohani
- School of Chemistry University of New South Wales NSW 2052 Australia
| | - Guanglong Li
- Shanghai‐Sydney Joint Bioengineering and Regenerative Medicine Lab at Shanghai JiaoTong Shanghai 200011 China
- Department of Prosthodontics Oral Bioengineering and Regenerative Medicine Lab Ninth People's Hospital affiliated to Shanghai Jiao Tong University School of Medicine 639 Zhizaoju Road Shanghai 200011 China
| | - Colin R. Dunstan
- Australian Research Council Centre in Innovative BioEngineering School of Aerospace Mechanical and Mechatronic Engineering University of Sydney NSW 2006 Australia
- Shanghai‐Sydney Joint Bioengineering and Regenerative Medicine Lab at Shanghai JiaoTong Shanghai 200011 China
| | - Pierre Rognon
- School of Civil Engineering University of Sydney NSW 2006 Australia
| | - Qing Li
- Australian Research Council Centre in Innovative BioEngineering School of Aerospace Mechanical and Mechatronic Engineering University of Sydney NSW 2006 Australia
- Shanghai‐Sydney Joint Bioengineering and Regenerative Medicine Lab at Shanghai JiaoTong Shanghai 200011 China
| | - Xinquan Jiang
- Shanghai‐Sydney Joint Bioengineering and Regenerative Medicine Lab at Shanghai JiaoTong Shanghai 200011 China
- Department of Prosthodontics Oral Bioengineering and Regenerative Medicine Lab Ninth People's Hospital affiliated to Shanghai Jiao Tong University School of Medicine 639 Zhizaoju Road Shanghai 200011 China
| | - Hala Zreiqat
- Australian Research Council Centre in Innovative BioEngineering School of Aerospace Mechanical and Mechatronic Engineering University of Sydney NSW 2006 Australia
- Shanghai‐Sydney Joint Bioengineering and Regenerative Medicine Lab at Shanghai JiaoTong Shanghai 200011 China
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40
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Paris M, Götz A, Hettrich I, Bidan CM, Dunlop JWC, Razi H, Zizak I, Hutmacher DW, Fratzl P, Duda GN, Wagermaier W, Cipitria A. Scaffold curvature-mediated novel biomineralization process originates a continuous soft tissue-to-bone interface. Acta Biomater 2017; 60:64-80. [PMID: 28736221 DOI: 10.1016/j.actbio.2017.07.029] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2017] [Revised: 06/16/2017] [Accepted: 07/20/2017] [Indexed: 11/30/2022]
Abstract
A myriad of shapes are found in biological tissues, often naturally evolved to fulfill a particular function. In the field of tissue engineering, substrate geometry influences cell behavior and tissue formation in vitro, yet little is known how this translates to an in vivo scenario. Here we investigate scaffold curvature-induced tissue growth, without additional growth factors or cells, in an ovine animal model. We show that soft tissue formation follows a curvature-driven tissue growth model. The highly organized endogenous soft matrix, potentially under mechanical strain, leads to a non-standard form of biomineralization, whereby the pre-existing organic matrix is mineralized without collagen remodeling and without an intermediate cartilage ossification phase. Micro- and nanoscale characterization of the tissue microstructure using histology, backscattered electron (BSE) and second-harmonic generation (SHG) imaging and synchrotron small angle X-ray scattering (SAXS) revealed (i) continuous collagen fibers across the soft-hard tissue interface on the tip of mineralized cones, and (ii) bone remodeling by basic multicellular units (BMUs) in regions adjacent to the native cortical bone. Thus, features of soft tissue-to-bone interface resembling the insertion sites of ligaments and tendons into bone were created, using a scaffold that did not mimic the structural or biological gradients across such a complex interface at its mature state. This study provides fundamental knowledge for biomimetic scaffold design in the fields of bone regeneration and soft tissue-to-bone interface tissue engineering. STATEMENT OF SIGNIFICANCE Geometry influences cell behavior and tissue formation in vitro. However, little is known how this translates to an in vivo scenario. Here we investigate the influence of scaffold mean surface curvature on in vivo tissue growth using an ovine animal model. Based on a multiscale tissue microstructure characterization, we show a seamless integration of soft tissue into newly formed bone, resembling the insertion sites of ligaments and tendons into bone. This interface was created using a scaffold without additional growth factors or cells that did not recapitulate the structural or biological gradients across such a complex tissue interface at its mature state. These findings have important implications for biomimetic scaffold design for bone regeneration and soft tissue-to-bone interface tissue engineering.
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Affiliation(s)
- Michael Paris
- Julius Wolff Institute & Center for Musculoskeletal Surgery, Charité - Universitätsmedizin Berlin, 13353 Berlin, Germany
| | - Andreas Götz
- Julius Wolff Institute & Center for Musculoskeletal Surgery, Charité - Universitätsmedizin Berlin, 13353 Berlin, Germany
| | - Inga Hettrich
- Julius Wolff Institute & Center for Musculoskeletal Surgery, Charité - Universitätsmedizin Berlin, 13353 Berlin, Germany
| | - Cécile M Bidan
- Department of Biomaterials, Max Planck Institute of Colloids and Interfaces, 14424 Potsdam, Germany
| | - John W C Dunlop
- Department of Biomaterials, Max Planck Institute of Colloids and Interfaces, 14424 Potsdam, Germany
| | - Hajar Razi
- Julius Wolff Institute & Center for Musculoskeletal Surgery, Charité - Universitätsmedizin Berlin, 13353 Berlin, Germany; Department of Biomaterials, Max Planck Institute of Colloids and Interfaces, 14424 Potsdam, Germany
| | - Ivo Zizak
- Helmholtz-Zentrum-Berlin für Materialien und Energie, 12489 Berlin, Germany
| | - Dietmar W Hutmacher
- Institute of Health and Biomedical Innovation, Queensland University of Technology, Brisbane, Queensland 4049, Australia
| | - Peter Fratzl
- Department of Biomaterials, Max Planck Institute of Colloids and Interfaces, 14424 Potsdam, Germany
| | - Georg N Duda
- Julius Wolff Institute & Center for Musculoskeletal Surgery, Charité - Universitätsmedizin Berlin, 13353 Berlin, Germany; Berlin-Brandenburg Center for Regenerative Therapies, Charité - Universitätsmedizin Berlin, 13353 Berlin, Germany
| | - Wolfgang Wagermaier
- Department of Biomaterials, Max Planck Institute of Colloids and Interfaces, 14424 Potsdam, Germany
| | - Amaia Cipitria
- Julius Wolff Institute & Center for Musculoskeletal Surgery, Charité - Universitätsmedizin Berlin, 13353 Berlin, Germany; Berlin-Brandenburg Center for Regenerative Therapies, Charité - Universitätsmedizin Berlin, 13353 Berlin, Germany.
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41
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Lin H, Tang Y, Lozito TP, Oyster N, Kang RB, Fritch MR, Wang B, Tuan RS. Projection Stereolithographic Fabrication of BMP-2 Gene-activated Matrix for Bone Tissue Engineering. Sci Rep 2017; 7:11327. [PMID: 28900122 PMCID: PMC5595921 DOI: 10.1038/s41598-017-11051-0] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2017] [Accepted: 08/18/2017] [Indexed: 12/11/2022] Open
Abstract
Currently, sustained in vivo delivery of active bone morphogenetic protein-2 (BMP-2) protein to responsive target cells, such as bone marrow-derived mesenchymal stem cells (BMSCs), remains challenging. Ex vivo gene transfer method, while efficient, requires additional operation for cell culture and therefore, is not compatible with point-of-care treatment. In this study, two lentiviral gene constructs - (1) Lv-BMP/GFP, containing human BMP-2 and green fluorescent protein (GFP) gene (BMP group); or (2) Lv-GFP, containing GFP gene (GFP group) - were incorporated with human BMSCs into a solution of photocrosslinkable gelatin, which was then subjected to visible light-based projection stereolithographic printing to form a scaffold with desired architectures. Upon in vitro culture, compared to the GFP group, cells from BMP group showed >1,000-fold higher BMP-2 release, and the majority of them stained intensely for alkaline phosphatase activity. Real-time RT-PCR also showed dramatically increased expression of osteogenesis marker genes only in the BMP group. 3.5 months post-implantation into SCID mice, the micro-computed tomography imaging showed detectable mineralized areas only in the BMP group, which was restricted within the scaffolds. Alizarin red staining and immunohistochemistry of GFP and osteocalcin further indicated that the grafted hBMSCs, not host cells, contributed primarily to the newly formed bone.
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Affiliation(s)
- Hang Lin
- Center for Cellular and Molecular Engineering, University of Pittsburgh, Pittsburgh, Pennsylvania, 15219, USA
| | - Ying Tang
- Center for Cellular and Molecular Engineering, University of Pittsburgh, Pittsburgh, Pennsylvania, 15219, USA
- Molecular Therapy Laboratory, University of Pittsburgh, Pittsburgh, Pennsylvania, 15219, USA
| | - Thomas P Lozito
- Center for Cellular and Molecular Engineering, University of Pittsburgh, Pittsburgh, Pennsylvania, 15219, USA
| | - Nicholas Oyster
- Stem Cell Research Center, Department of Orthopaedic Surgery, University of Pittsburgh, Pittsburgh, Pennsylvania, 15219, USA
| | - Robert B Kang
- Molecular Therapy Laboratory, University of Pittsburgh, Pittsburgh, Pennsylvania, 15219, USA
| | - Madalyn R Fritch
- Center for Cellular and Molecular Engineering, University of Pittsburgh, Pittsburgh, Pennsylvania, 15219, USA
- Department of Bioengineering, University of Pittsburgh, Pittsburgh, Pennsylvania, 15219, USA
| | - Bing Wang
- Center for Cellular and Molecular Engineering, University of Pittsburgh, Pittsburgh, Pennsylvania, 15219, USA.
- Molecular Therapy Laboratory, University of Pittsburgh, Pittsburgh, Pennsylvania, 15219, USA.
| | - Rocky S Tuan
- Center for Cellular and Molecular Engineering, University of Pittsburgh, Pittsburgh, Pennsylvania, 15219, USA.
- Department of Bioengineering, University of Pittsburgh, Pittsburgh, Pennsylvania, 15219, USA.
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42
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Rumiński S, Ostrowska B, Jaroszewicz J, Skirecki T, Włodarski K, Święszkowski W, Lewandowska-Szumieł M. Three-dimensional printed polycaprolactone-based scaffolds provide an advantageous environment for osteogenic differentiation of human adipose-derived stem cells. J Tissue Eng Regen Med 2017; 12:e473-e485. [PMID: 27599449 DOI: 10.1002/term.2310] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2016] [Revised: 08/18/2016] [Accepted: 08/26/2016] [Indexed: 01/26/2023]
Abstract
The capacity of bone grafts to repair critical size defects can be greatly enhanced by the delivery of mesenchymal stem cells (MSCs). Adipose tissue is considered the most effective source of MSCs (ADSCs); however, the efficiency of bone regeneration using undifferentiated ADSCs is low. Therefore, this study proposes scaffolds based on polycaprolactone (PCL), which is widely considered a suitable MSC delivery system, were used as a three-dimensional (3D) culture environment promoting osteogenic differentiation of ADSCs. PCL scaffolds enriched with 5% tricalcium phosphate (TCP) were used. Human ADSCs were cultured in osteogenic medium both on the scaffolds and in 2D culture. Cell viability and osteogenic differentiation were tested at various time points for 42 days. The expression of RUNX2, collagen I, alkaline phosphatase, osteonectin and osteocalcin, measured by real-time polymerase chain reaction was significantly upregulated in 3D culture. Production of osteocalcin, a specific marker of terminally differentiated osteoblasts, was significantly higher in 3D cultures than in 2D cultures, as confirmed by western blot and immunostaining, and accompanied by earlier and enhanced mineralization. Subcutaneous implantation into immunodeficient mice was used for in vivo observations. Immunohistological and micro-computed tomography analysis revealed ADSC survival and activity toward extracellular production after 4 and 12 weeks, although heterotopic osteogenesis was not confirmed - probably resulting from insufficient availability of Ca/P ions. Additionally, TCP did not contribute to the upregulation of differentiation on the scaffolds in culture, and we postulate that the 3D architecture is a critical factor and provides a useful environment for prior-to-implantation osteogenic differentiation of ADSCs. Copyright © 2016 John Wiley & Sons, Ltd.
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Affiliation(s)
- Sławomir Rumiński
- Department of Histology and Embryology, Centre for Biostructure Research, Medical University of Warsaw, Poland.,Centre for Preclinical Research and Technology, Poland.,Postgraduate School of Molecular Medicine, Medical University of Warsaw, Poland
| | - Barbara Ostrowska
- Faculty of Materials Science and Engineering, Warsaw University of Technology, Poland
| | - Jakub Jaroszewicz
- Faculty of Materials Science and Engineering, Warsaw University of Technology, Poland
| | - Tomasz Skirecki
- Department of Clinical Cytology, Centre of Postgraduate Medical Education, Warsaw, Poland.,Department of Anesthesiology and Intensive Care Medicine, Centre of Postgraduate Medical Education, Warsaw, Poland
| | - Krzysztof Włodarski
- Department of Histology and Embryology, Centre for Biostructure Research, Medical University of Warsaw, Poland
| | - Wojciech Święszkowski
- Faculty of Materials Science and Engineering, Warsaw University of Technology, Poland
| | - Małgorzata Lewandowska-Szumieł
- Department of Histology and Embryology, Centre for Biostructure Research, Medical University of Warsaw, Poland.,Centre for Preclinical Research and Technology, Poland
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43
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Youssef A, Hollister SJ, Dalton PD. Additive manufacturing of polymer melts for implantable medical devices and scaffolds. Biofabrication 2017; 9:012002. [DOI: 10.1088/1758-5090/aa5766] [Citation(s) in RCA: 126] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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44
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Di Luca A, Lorenzo‐Moldero I, Mota C, Lepedda A, Auhl D, Van Blitterswijk C, Moroni L. Tuning Cell Differentiation into a 3D Scaffold Presenting a Pore Shape Gradient for Osteochondral Regeneration. Adv Healthc Mater 2016; 5:1753-63. [PMID: 27109461 DOI: 10.1002/adhm.201600083] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2016] [Indexed: 12/12/2022]
Abstract
Osteochondral regeneration remains nowadays a major problem since the outcome of current techniques is not satisfactory in terms of functional tissue formation and development. A possible solution is the combination of human mesenchymal stem cells (hMSCs) with additive manufacturing technologies to fabricate scaffolds with instructive properties. In this study, the differentiation of hMSCs within a scaffold presenting a gradient in pore shape is presented. The variation in pore shape is determined by varying the angle formed by the fibers of two consequent layers. The fiber deposition patterns are 0-90, which generate squared pores, 0-45, 0-30, and 0-15, that generate rhomboidal pores with an increasing major axis as the deposition angle decreases. Within the gradient construct, squared pores support a better chondrogenic differentiation whereas cells residing in the rhomboidal pores display a better osteogenic differentiation. When cultured under osteochondral conditions the trend in both osteogenic and chondrogenic markers is maintained. Engineering the pore shape, thus creating axial gradients in structural properties, seems to be an instructive strategy to fabricate functional 3D scaffolds that are able to influence hMSCs differentiation for osteochondral tissue regeneration.
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Affiliation(s)
- Andrea Di Luca
- Tissue Regeneration Department University of Twente Drienerlolaan 5 7522 NB Enschede The Netherlands
| | - Ivan Lorenzo‐Moldero
- Complex Tissue Regeneration Department MERLN Institute for Technology Inspired Regenerative Medicine Maastricht University 6229 ER Maastricht The Netherlands
| | - Carlos Mota
- Complex Tissue Regeneration Department MERLN Institute for Technology Inspired Regenerative Medicine Maastricht University 6229 ER Maastricht The Netherlands
| | - Antonio Lepedda
- Department of Biomedical Sciences University of Sassari via Muroni 25 Italy
| | - Dietmar Auhl
- AMIBM Aachen‐Maastricht Institute for Biobased Materials Maastricht UniversityPO Box 616 6200 MD Maastricht The Netherlands
| | - Clemens Van Blitterswijk
- Tissue Regeneration Department University of Twente Drienerlolaan 5 7522 NB Enschede The Netherlands
- Complex Tissue Regeneration Department MERLN Institute for Technology Inspired Regenerative Medicine Maastricht University 6229 ER Maastricht The Netherlands
| | - Lorenzo Moroni
- Tissue Regeneration Department University of Twente Drienerlolaan 5 7522 NB Enschede The Netherlands
- Complex Tissue Regeneration Department MERLN Institute for Technology Inspired Regenerative Medicine Maastricht University 6229 ER Maastricht The Netherlands
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45
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Zaiss S, Brown TD, Reichert JC, Berner A. Poly(ε-caprolactone) Scaffolds Fabricated by Melt Electrospinning for Bone Tissue Engineering. MATERIALS (BASEL, SWITZERLAND) 2016; 9:E232. [PMID: 28773353 PMCID: PMC5502879 DOI: 10.3390/ma9040232] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/23/2016] [Revised: 03/06/2016] [Accepted: 03/17/2016] [Indexed: 01/01/2023]
Abstract
Melt electrospinning is a promising approach to manufacture biocompatible scaffolds for tissue engineering. In this study, melt electrospinning of poly(ε-caprolactone) onto structured, metallic collectors resulted in scaffolds with an average pore size of 250-300 μm and an average fibre diameter of 15 μm. Scaffolds were seeded with ovine osteoblasts in vitro. Cell proliferation and deposition of mineralised extracellular matrix was assessed using PicoGreen® (Thermo Fisher Scientific, Scoresby, Australia) and WAKO® HR II (WAKO, Osaka, Japan) calcium assays. Biocompatibility, cell infiltration and the growth pattern of osteoblasts on scaffolds was investigated using confocal microscopy and scanning electron microscopy. Osteoblasts proliferated on the scaffolds over an entire 40-day culture period, with excellent survival rates and deposited mineralized extracellular matrix. In general, the 3D environment of the structured melt electrospun scaffold was favourable for osteoblast cultures.
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Affiliation(s)
- Sascha Zaiss
- Institute of Health & Biomedical Innovation, Queensland University of Technology, Brisbane, Queensland 4001, Australia.
- Department of Trauma Surgery, University Hospital Regensburg, Regensburg 93055, Germany.
| | - Toby D Brown
- Institute of Health & Biomedical Innovation, Queensland University of Technology, Brisbane, Queensland 4001, Australia.
| | - Johannes C Reichert
- Institute of Health & Biomedical Innovation, Queensland University of Technology, Brisbane, Queensland 4001, Australia.
- Department of Orthopedics and Trauma Surgery, Evangelisches Waldkrankenhaus Spandau, Berlin 13589, Germany.
| | - Arne Berner
- Institute of Health & Biomedical Innovation, Queensland University of Technology, Brisbane, Queensland 4001, Australia.
- Department of Trauma Surgery, University Hospital Regensburg, Regensburg 93055, Germany.
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46
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Huang S, Yao B, Xie J, Fu X. 3D bioprinted extracellular matrix mimics facilitate directed differentiation of epithelial progenitors for sweat gland regeneration. Acta Biomater 2016; 32:170-177. [PMID: 26747979 DOI: 10.1016/j.actbio.2015.12.039] [Citation(s) in RCA: 111] [Impact Index Per Article: 13.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2015] [Revised: 12/10/2015] [Accepted: 12/30/2015] [Indexed: 12/11/2022]
Abstract
Sweat glands perform a vital thermoregulatory function in mammals. Like other skin appendages, they originate from epidermal progenitors. However, they have low regenerative potential in response to injury, and whether adult epidermal progenitors could be specified to differentiate to a sweat gland cell lineage remains largely unexplored. We used bioprinting technology to create a functional in vitro cell-laden 3D extracellular matrix mimics (3D-ECM) with composite hydrogels based on gelatin and sodium alginate because of chemical and structural similarity to ECM components. To achieve specific cell differentiation, mouse plantar dermis and epidermal growth factor were synchronously incorporated into the 3D-ECM mimics to create an inductive niche for epidermal progenitor cells obtained from mice. The biological 3D construct could maintain cell viability, thereby facilitating cell spreading and matrix formation. In vitro data by immunofluorescence and gene expression assay of key cell-surface markers demonstrated that the bioprinted 3D-ECM could effectively create a restrictive niche for epidermal progenitors that ensures unilateral differentiation into sweat gland cells. Furthermore, direct delivery of bioprinted 3D-ECM into burned paws of mice resulted in functional restoration of sweat glands. This study represents the rational design to enhance the specific differentiation of epidermal lineages using 3D bioprinting and may have clinical and translational implications in regenerating sweat glands. STATEMENT OF SIGNIFICANCE Sweat gland regeneration after injury is of clinical importance but remains largely unsolved because of low regenerative potential and lack of a definite niche. Some studies have shown sweat gland regeneration with gene-based interventions or cell-based induction via embryonic components, but translation to clinic is challenging. The novelty and significance of the work lies in the fact that we design a 3D bioprinted extracellular matrix that provides the spatial inductive cues for enhancing specific differentiation of epidermal lineages to regenerate sweat glands, which is critical for treating deep burns or other wounds. Our studies are encouraging given the overwhelming advantages of our designed 3D bioprinting construct over other cell delivery technology in maintaining high cell proliferation; another interesting finding is that adult tissue components retain a gland lineage-inductive power as embryonic tissue, which can facilitate translation.
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Affiliation(s)
- Sha Huang
- Key Laboratory of Tissue Repair and Regeneration of PLA, and Beijing Key Research Laboratory of Skin Injury, Repair and Regeneration, First Hospital Affiliated to General Hospital of PLA, Beijing 100048, PR China; Institute of Basic Medical Sciences, General Hospital of PLA, Beijing 100853, PR China; Hainan Branch of the Chinese PLA General Hospital, Sanya 572014, PR China.
| | - Bin Yao
- Key Laboratory of Tissue Repair and Regeneration of PLA, and Beijing Key Research Laboratory of Skin Injury, Repair and Regeneration, First Hospital Affiliated to General Hospital of PLA, Beijing 100048, PR China; School of Medicine, Nankai University, Tianjin 300071, PR China
| | - Jiangfan Xie
- Key Laboratory of Tissue Repair and Regeneration of PLA, and Beijing Key Research Laboratory of Skin Injury, Repair and Regeneration, First Hospital Affiliated to General Hospital of PLA, Beijing 100048, PR China; Graduate School of Tianjin Medical University, Tianjin 300052, PR China
| | - Xiaobing Fu
- Key Laboratory of Tissue Repair and Regeneration of PLA, and Beijing Key Research Laboratory of Skin Injury, Repair and Regeneration, First Hospital Affiliated to General Hospital of PLA, Beijing 100048, PR China.
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Condylar reconstruction in the treatment of temporomandibular joint ankylosis: a contribution to the ongoing debate and a plea to join forces for tissue engineering strategies. Int J Oral Maxillofac Surg 2015; 44:1581-2. [DOI: 10.1016/j.ijom.2015.05.005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2015] [Accepted: 05/05/2015] [Indexed: 11/24/2022]
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Yang K, Zhang J, Ma X, Ma Y, Kan C, Ma H, Li Y, Yuan Y, Liu C. β-Tricalcium phosphate/poly(glycerol sebacate) scaffolds with robust mechanical property for bone tissue engineering. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2015; 56:37-47. [DOI: 10.1016/j.msec.2015.05.083] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/28/2015] [Accepted: 05/27/2015] [Indexed: 01/08/2023]
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Biodegradable Mineralized Collagen Plug for the Reconstruction of Craniotomy Burr-Holes: A Report of Three Cases. ACTA ACUST UNITED AC 2015. [DOI: 10.18679/cn11-6030_r.2015.002] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Objectives In this case report, we describe the design, fabrication and clinical outcomes of a novel bioresorbable, mineralized collagen burr-hole plug for the reconstruction of craniotomy burr-holes. Methods Mineralized collagen burr-hole plugs were fabricated via a biomimetic mineralization process. The biomimetic mineralized collagen has a similar chemical composition and microstructure to natural bone tissue, thereby possessing good biocompatibility and osteoconductivity. The mineralized collagen burr-hole plugs were implanted into three patients, and clinical outcomes were evaluated at one-year follow-ups. Results All bone defects healed very well using the mineralized collagen burr-hole plugs, and there were no adverse reactions at the surgical sites. Conclusions The clinical outcomes indicated that the mineralized collagen was effective for reconstructing burr-holes in the skull after craniotomy.
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Bigham-Sadegh A, Oryan A. Selection of animal models for pre-clinical strategies in evaluating the fracture healing, bone graft substitutes and bone tissue regeneration and engineering. Connect Tissue Res 2015; 56:175-94. [PMID: 25803622 DOI: 10.3109/03008207.2015.1027341] [Citation(s) in RCA: 57] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
In vitro assays can be useful in determining biological mechanism and optimizing scaffold parameters, however translation of the in vitro results to clinics is generally hard. Animal experimentation is a better approximation than in vitro tests, and usage of animal models is often essential in extrapolating the experimental results and translating the information in a human clinical setting. In addition, usage of animal models to study fracture healing is useful to answer questions related to the most effective method to treat humans. There are several factors that should be considered when selecting an animal model. These include availability of the animal, cost, ease of handling and care, size of the animal, acceptability to society, resistance to surgery, infection and disease, biological properties analogous to humans, bone structure and composition, as well as bone modeling and remodeling characteristics. Animal experiments on bone healing have been conducted on small and large animals, including mice, rats, rabbits, dogs, pigs, goats and sheep. This review also describes the molecular events during various steps of fracture healing and explains different means of fracture healing evaluation including biomechanical, histopathological and radiological assessments.
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Affiliation(s)
- Amin Bigham-Sadegh
- Faculty of Veterinary Medicine, Department of Veterinary Surgery and Radiology, Shahrekord University , Shahrekord , Iran and
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