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Vallmajo-Martin Q, Millan C, Müller R, Weber FE, Ehrbar M, Ghayor C. Enhanced bone regeneration in rat calvarial defects through BMP2 release from engineered poly(ethylene glycol) hydrogels. Sci Rep 2024; 14:4916. [PMID: 38418564 PMCID: PMC10901800 DOI: 10.1038/s41598-024-55411-z] [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: 06/30/2023] [Accepted: 02/23/2024] [Indexed: 03/01/2024] Open
Abstract
The clinical standard therapy for large bone defects, typically addressed through autograft or allograft donor tissue, faces significant limitations. Tissue engineering offers a promising alternative strategy for the regeneration of substantial bone lesions. In this study, we harnessed poly(ethylene glycol) (PEG)-based hydrogels, optimizing critical parameters including stiffness, incorporation of arginine-glycine-aspartic acid (RGD) cell adhesion motifs, degradability, and the release of BMP2 to promote bone formation. In vitro we demonstrated that human bone marrow derived stromal cell (hBMSC) proliferation and spreading strongly correlates with hydrogel stiffness and adhesion to RGD peptide motifs. Moreover, the incorporation of the osteogenic growth factor BMP2 into the hydrogels enabled sustained release, effectively inducing bone regeneration in encapsulated progenitor cells. When used in vivo to treat calvarial defects in rats, we showed that hydrogels of low and intermediate stiffness optimally facilitated cell migration, proliferation, and differentiation promoting the efficient repair of bone defects. Our comprehensive in vitro and in vivo findings collectively suggest that the developed hydrogels hold significant promise for clinical translation for bone repair and regeneration by delivering sustained and controlled stimuli from active signaling molecules.
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Affiliation(s)
- Queralt Vallmajo-Martin
- Department of Obstetrics, University Hospital Zürich, University of Zürich, Schmelzbergstrasse 12, 8091, Zurich, Switzerland
- School of Life Sciences and School of Engineering, Institute of Bioengineering, École Polytechnique Fédérale de Lausanne, Station 15, 1015, Lausanne, Switzerland
| | - Christopher Millan
- Department of Urology, University Hospital Zürich, University of Zürich, Wagistrasse 21, 8952, Zurich, Switzerland
| | - Ralph Müller
- Institute for Biomechanics, Eidgenössische Technische Hochschule Zürich, Leopold-Ruzicka-Weg 8093, 8049, Zurich, Switzerland
| | - Franz E Weber
- Center of Dental Medicine, Oral Biotechnology & Bioengineering, University of Zürich, Plattenstrasse 11, 8032, Zurich, Switzerland
| | - Martin Ehrbar
- Department of Obstetrics, University Hospital Zürich, University of Zürich, Schmelzbergstrasse 12, 8091, Zurich, Switzerland.
| | - Chafik Ghayor
- Center of Dental Medicine, Oral Biotechnology & Bioengineering, University of Zürich, Plattenstrasse 11, 8032, Zurich, Switzerland.
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2
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Roldan L, Isaza C, Ospina J, Montoya C, Domínguez J, Orrego S, Correa S. A Comparative Study of HA/DBM Compounds Derived from Bovine and Porcine for Bone Regeneration. J Funct Biomater 2023; 14:439. [PMID: 37754853 PMCID: PMC10532284 DOI: 10.3390/jfb14090439] [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: 07/12/2023] [Revised: 07/25/2023] [Accepted: 08/17/2023] [Indexed: 09/28/2023] Open
Abstract
This comparative study investigated the tissue regeneration and inflammatory response induced by xenografts comprised of hydroxyapatite (HA) and demineralized bone matrix (DBM) extracted from porcine (P) and bovine (B) sources. First, extraction of HA and DBM was independently conducted, followed by chemical and morphological characterization. Second, mixtures of HA/DBM were prepared in 50/50 and 60/40 concentrations, and the chemical, morphological, and mechanical properties were evaluated. A rat calvarial defect model was used to evaluate the tissue regeneration and inflammatory responses at 3 and 6 months. The commercial allograft DBM Puros® was used as a clinical reference. Different variables related to tissue regeneration were evaluated, including tissue thickness regeneration (%), amount of regenerated bone area (%), and amount of regenerated collagen area (%). The inflammatory response was evaluated by quantifying the blood vessel area. Overall, tissue regeneration from porcine grafts was superior to bovine. After 3 months of implantation, the tissue thickness regeneration in the 50/50P compound and the commercial DBM was significantly higher (~99%) than in the bovine materials (~23%). The 50/50P and DBM produced higher tissue regeneration than the naturally healed controls. Similar trends were observed for the regenerated bone and collagen areas. The blood vessel area was correlated with tissue regeneration in the first 3 months of evaluation. After 6 months of implantation, HA/DBM compounds showed less regenerated collagen than the DBM-only xenografts. In addition, all animal-derived xenografts improved tissue regeneration compared with the naturally healed defects. No clinical complications associated with any implanted compound were noted.
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Affiliation(s)
- Lina Roldan
- Grupo de Investigación en Bioingeniería (GIB), Universidad EAFIT, Medellín 050022, Colombia; (L.R.); (C.I.)
- Department of Oral Health Sciences, Kornberg School of Dentistry, Temple University, Philadelphia, PA 19122, USA; (C.M.); (S.O.)
| | - Catalina Isaza
- Grupo de Investigación en Bioingeniería (GIB), Universidad EAFIT, Medellín 050022, Colombia; (L.R.); (C.I.)
| | - Juan Ospina
- Centro de Investigación y Desarrollo Cárnico, Industrias de Alimentos Zenú S.A.S., Grupo Nutresa, Medellín 050044, Colombia;
| | - Carolina Montoya
- Department of Oral Health Sciences, Kornberg School of Dentistry, Temple University, Philadelphia, PA 19122, USA; (C.M.); (S.O.)
| | - José Domínguez
- Grupo de Investigación en Bioingeniería (GIB), Universidad EAFIT, Medellín 050022, Colombia; (L.R.); (C.I.)
| | - Santiago Orrego
- Department of Oral Health Sciences, Kornberg School of Dentistry, Temple University, Philadelphia, PA 19122, USA; (C.M.); (S.O.)
- Bioengineering Department, College of Engineering, Temple University, Philadelphia, PA 191122, USA
| | - Santiago Correa
- Grupo de Investigación en Bioingeniería (GIB), Universidad EAFIT, Medellín 050022, Colombia; (L.R.); (C.I.)
- Escuela de Ciencias Aplicadas e Ingeniería, Universidad EAFIT, Medellín 050022, Colombia
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3
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Boda R, Lázár I, Keczánné-Üveges A, Bakó J, Tóth F, Trencsényi G, Kálmán-Szabó I, Béresová M, Sajtos Z, D Tóth E, Deák Á, Tóth A, Horváth D, Gaál B, Daróczi L, Dezső B, Ducza L, Hegedűs C. β-Tricalcium Phosphate-Modified Aerogel Containing PVA/Chitosan Hybrid Nanospun Scaffolds for Bone Regeneration. Int J Mol Sci 2023; 24:ijms24087562. [PMID: 37108742 PMCID: PMC10141662 DOI: 10.3390/ijms24087562] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2023] [Revised: 04/13/2023] [Accepted: 04/18/2023] [Indexed: 04/29/2023] Open
Abstract
Electrospinning has recently been recognized as a potential method for use in biomedical applications such as nanofiber-based drug delivery or tissue engineering scaffolds. The present study aimed to demonstrate the electrospinning preparation and suitability of β-tricalcium phosphate-modified aerogel containing polyvinyl alcohol/chitosan fibrous meshes (BTCP-AE-FMs) for bone regeneration under in vitro and in vivo conditions. The mesh physicochemical properties included a 147 ± 50 nm fibrous structure, in aqueous media the contact angles were 64.1 ± 1.7°, and it released Ca, P, and Si. The viability of dental pulp stem cells on the BTCP-AE-FM was proven by an alamarBlue assay and with a scanning electron microscope. Critical-size calvarial defects in rats were performed as in vivo experiments to investigate the influence of meshes on bone regeneration. PET imaging using 18F-sodium fluoride standardized uptake values (SUVs) detected 7.40 ± 1.03 using polyvinyl alcohol/chitosan fibrous meshes (FMs) while 10.72 ± 1.11 with BTCP-AE-FMs after 6 months. New bone formations were confirmed by histological analysis. Despite a slight change in the morphology of the mesh because of cross-linking, the BTCP-AE-FM basically retained its fibrous, porous structure and hydrophilic and biocompatible character. Our experiments proved that hybrid nanospun scaffold composite mesh could be a new experimental bone substitute bioactive material in future medical practice.
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Affiliation(s)
- Róbert Boda
- Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, University of Debrecen, 4032 Debrecen, Hungary
| | - István Lázár
- Department of Inorganic and Analytical Chemistry, Faculty of Science and Technology, University of Debrecen, 4032 Debrecen, Hungary
| | - Andrea Keczánné-Üveges
- Department of Biomaterials and Prosthetic Dentistry, Faculty of Dentistry, University of Debrecen, 4032 Debrecen, Hungary
| | - József Bakó
- Department of Biomaterials and Prosthetic Dentistry, Faculty of Dentistry, University of Debrecen, 4032 Debrecen, Hungary
| | - Ferenc Tóth
- Department of Biomaterials and Prosthetic Dentistry, Faculty of Dentistry, University of Debrecen, 4032 Debrecen, Hungary
| | - György Trencsényi
- Division of Nuclear Medicine and Translational Imaging, Department of Medical Imaging, Faculty of Medicine, University of Debrecen, 4032 Debrecen, Hungary
| | - Ibolya Kálmán-Szabó
- Division of Nuclear Medicine and Translational Imaging, Department of Medical Imaging, Faculty of Medicine, University of Debrecen, 4032 Debrecen, Hungary
| | - Monika Béresová
- Department of Medical Imaging, Faculty of Medicine, University of Debrecen, 4032 Debrecen, Hungary
| | - Zsófi Sajtos
- Department of Inorganic and Analytical Chemistry, Faculty of Science and Technology, University of Debrecen, 4032 Debrecen, Hungary
| | - Etelka D Tóth
- Department of Dentoalveolar Surgery, University of Debrecen, 4032 Debrecen, Hungary
| | - Ádám Deák
- Department of Operative Techniques and Surgical Research, Faculty of Medicine, University of Debrecen, 4032 Debrecen, Hungary
| | - Adrienn Tóth
- Department of Dentoalveolar Surgery, University of Debrecen, 4032 Debrecen, Hungary
| | - Dóra Horváth
- Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, University of Debrecen, 4032 Debrecen, Hungary
| | - Botond Gaál
- Department of Anatomy, Histology and Embryology, Faculty of Medicine, University of Debrecen, 4032 Debrecen, Hungary
| | - Lajos Daróczi
- Department of Solid State Physics, University of Debrecen, 4002 Debrecen, Hungary
| | - Balázs Dezső
- Department of Oral Pathology and Microbiology, Faculty of Dentistry, University of Debrecen, 4032 Debrecen, Hungary
| | - László Ducza
- Department of Anatomy, Histology and Embryology, Faculty of Medicine, University of Debrecen, 4032 Debrecen, Hungary
| | - Csaba Hegedűs
- Department of Biomaterials and Prosthetic Dentistry, Faculty of Dentistry, University of Debrecen, 4032 Debrecen, Hungary
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4
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Pomini KT, Buchaim DV, Bighetti ACC, Andreo JC, Rosso MPDO, Escudero JSB, Della Coletta BB, Alcalde MP, Duarte MAH, Pitol DL, Issa JPM, Ervolino E, Moscatel MBM, Bellini MZ, de Souza AT, Soares WC, Buchaim RL. Use of Photobiomodulation Combined with Fibrin Sealant and Bone Substitute Improving the Bone Repair of Critical Defects. Polymers (Basel) 2022; 14:polym14194170. [PMID: 36236116 PMCID: PMC9572221 DOI: 10.3390/polym14194170] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2022] [Revised: 09/27/2022] [Accepted: 09/29/2022] [Indexed: 11/16/2022] Open
Abstract
In this preclinical protocol, an adjunct method is used in an attempt to overcome the limitations of conventional therapeutic approaches applied to bone repair of large bone defects filled with scaffolds. Thus, we evaluate the effects of photobiomodulation therapy (PBMT) on the bone repair process on defects filled with demineralized bovine bone (B) and fibrin sealant (T). The groups were BC (blood clot), BT (B + T), BCP (BC + PBMT), and BTP (B + T + PBMT). Microtomographically, BC and BCP presented a hypodense cavity with hyperdense regions adjacent to the border of the wound, with a slight increase at 42 days. BT and BTP presented discrete hyperdensing areas at the border and around the B particles. Quantitatively, BCP and BTP (16.96 ± 4.38; 17.37 ± 4.38) showed higher mean bone density volume in relation to BC and BT (14.42 ± 3.66; 13.44 ± 3.88). Histologically, BC and BCP presented deposition of immature bone at the periphery and at 42 days new bone tissue became lamellar with organized total collagen fibers. BT and BTP showed inflammatory infiltrate along the particles, but at 42 days, it was resolved, mainly in BTP. In the birefringence analysis, BT and BTP, the percentage of red birefringence increased (9.14% to 20.98% and 7.21% to 27.57%, respectively), but green birefringence was similar in relation to 14 days (3.3% to 3.5% and 3.5% to 4.2%, respectively). The number of osteocytes in the neoformed bone matrix proportionally reduced in all evaluated groups. Immunostaining of bone morphogenetic protein (BMP—2/4), osteocalcin (OCN), and vascular endothelial growth factor (VEGF) were higher in BCP and BTP when compared to the BC and BT groups (p < 0.05). An increased number of TRAP positive cells (tartrate resistant acid phosphatase) was observed in BT and BTP. We conclude that PBMT positively influenced the repair of bone defects filled with B and T.
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Affiliation(s)
- Karina Torres Pomini
- Department of Biological Sciences, Bauru School of Dentistry (FOB/USP), University of São Paulo, Bauru 17012-901, Brazil
- Postgraduate Program in Structural and Functional Interactions in Rehabilitation, Postgraduate Department, University of Marilia (UNIMAR), Marilia 17525-902, Brazil
| | - Daniela Vieira Buchaim
- Postgraduate Program in Structural and Functional Interactions in Rehabilitation, Postgraduate Department, University of Marilia (UNIMAR), Marilia 17525-902, Brazil
- Teaching and Research Coordination of the Medical School, University Center of Adamantina (UNIFAI), Adamantina 17800-000, Brazil
| | - Ana Carolina Cestari Bighetti
- Department of Biological Sciences, Bauru School of Dentistry (FOB/USP), University of São Paulo, Bauru 17012-901, Brazil
| | - Jesus Carlos Andreo
- Department of Biological Sciences, Bauru School of Dentistry (FOB/USP), University of São Paulo, Bauru 17012-901, Brazil
| | | | - José Stalin Bayas Escudero
- Department of Biological Sciences, Bauru School of Dentistry (FOB/USP), University of São Paulo, Bauru 17012-901, Brazil
| | - Bruna Botteon Della Coletta
- Department of Biological Sciences, Bauru School of Dentistry (FOB/USP), University of São Paulo, Bauru 17012-901, Brazil
| | - Murilo Priori Alcalde
- Department of Dentistry, Endodontics and Dental Materials, Bauru School of Dentistry, University of São Paulo (FOB/USP), Bauru 17012-901, Brazil
| | - Marco Antonio Hungaro Duarte
- Department of Dentistry, Endodontics and Dental Materials, Bauru School of Dentistry, University of São Paulo (FOB/USP), Bauru 17012-901, Brazil
| | - Dimitrius Leonardo Pitol
- Department of Basic and Oral Biology, School of Dentistry of Ribeirão Preto, University of São Paulo (FORP/USP), Ribeirão Preto 14040-904, Brazil
| | - João Paulo Mardegan Issa
- Department of Basic and Oral Biology, School of Dentistry of Ribeirão Preto, University of São Paulo (FORP/USP), Ribeirão Preto 14040-904, Brazil
| | - Edilson Ervolino
- Department of Basic Sciences, School of Dentistry, São Paulo State University (UNESP), Araçatuba 16066-840, Brazil
| | | | - Márcia Zilioli Bellini
- Pro-Rectory of Research and Graduate Studies, University Center of Adamantina (UNIFAI), Adamantina 17800-000, Brazil
| | | | - Wendel Cleber Soares
- Vice-Rector/President, University Center of Adamantina (UNIFAI), Adamantina 17800-000, Brazil
| | - Rogerio Leone Buchaim
- Department of Biological Sciences, Bauru School of Dentistry (FOB/USP), University of São Paulo, Bauru 17012-901, Brazil
- Graduate Program in Anatomy of Domestic and Wild Animals, Faculty of Veterinary Medicine and Animal Science, University of São Paulo (FMVZ/USP), São Paulo 05508-270, Brazil
- Correspondence: ; Tel.: +55-14-3235-8220
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5
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Hara K, Hellem E, Yamada S, Sariibrahimoglu K, Mølster A, Gjerdet NR, Hellem S, Mustafa K, Yassin MA. Efficacy of treating segmental bone defects through endochondral ossification: 3D printed designs and bone metabolic activities. Mater Today Bio 2022; 14:100237. [PMID: 35280332 PMCID: PMC8914554 DOI: 10.1016/j.mtbio.2022.100237] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2021] [Revised: 02/15/2022] [Accepted: 03/05/2022] [Indexed: 10/25/2022]
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6
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Lu YC, Chang TK, Yeh ST, Lin TC, Lin HS, Chen CH, Huang CH, Huang CH. Evaluation of graphene-derived bone scaffold exposure to the calvarial bone_ in-vitro and in-vivo studies. Nanotoxicology 2022; 16:1-15. [PMID: 35085045 DOI: 10.1080/17435390.2022.2027036] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Graphene is a novel material which has recently been gaining great interest in the biomedical fields. Our previous study observed that graphene-derived particles help induce bone formation in a murine calvarial model. Here, we further developed a blended graphene-contained polycaprolactone (PCL/G) filament for application in a 3D-printed bone scaffold. Since implants are expected to be for long-term usage, in vitro cell culture and in vivo scaffold implants were evaluated in a critical-size bone defect calvarial model for over 60 weeks. Graphene greatly improved the mechanical strength by 30.2% compared to pure PCL. The fabricated PCL/G scaffolds also showed fine cell viability. In animal model, an abnormal electroencephalogram power spectrum and early signs of aging, such as hair graying and hair loss, were found in the group with a PCL/G scaffold compared to pure PCL scaffold. Neither of the abnormal symptoms caused death of all animals in both groups. The long-term use of graphene-derived biomaterials for in-vivo implants seems to be safe. But the comprehensive biosafety still needs further evaluation.
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Affiliation(s)
- Yung-Chang Lu
- Department of Medicine, MacKay Medical College, Taipei, Taiwan.,Department of Orthopaedic Surgery, MacKay Memorial Hospital, Taipei, Taiwan.,Department of Medical Research, MacKay Memorial Hospital, Taipei, Taiwan
| | - Ting-Kuo Chang
- Department of Medicine, MacKay Medical College, Taipei, Taiwan.,Department of Orthopaedic Surgery, MacKay Memorial Hospital, Taipei, Taiwan.,Department of Medical Research, MacKay Memorial Hospital, Taipei, Taiwan
| | - Shu-Ting Yeh
- Department of Orthopaedic Surgery, MacKay Memorial Hospital, Taipei, Taiwan.,Department of Medical Research, MacKay Memorial Hospital, Taipei, Taiwan
| | - Tzu-Chiao Lin
- Department of Orthopaedic Surgery, MacKay Memorial Hospital, Taipei, Taiwan.,Department of Medical Research, MacKay Memorial Hospital, Taipei, Taiwan
| | - Hung-Shih Lin
- Department of Neurosurgery, MacKay Memorial Hospital, Taipei, Taiwan
| | - Chun-Hung Chen
- Department of Medical Research, MacKay Memorial Hospital, Taipei, Taiwan.,School of Dentistry, National Yang Ming Chiao Tung University, Taipei, Taiwan
| | - Chun-Hsiung Huang
- Department of Orthopaedic Surgery, MacKay Memorial Hospital, Taipei, Taiwan.,Department of Medical Research, MacKay Memorial Hospital, Taipei, Taiwan.,Department of Orthopaedic Surgery, Changhau Christian Hospital, Changhau, Taiwan
| | - Chang-Hung Huang
- Department of Orthopaedic Surgery, MacKay Memorial Hospital, Taipei, Taiwan.,Department of Medical Research, MacKay Memorial Hospital, Taipei, Taiwan.,School of Dentistry, National Yang Ming Chiao Tung University, Taipei, Taiwan
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7
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Foessl I, Bassett JHD, Bjørnerem Å, Busse B, Calado Â, Chavassieux P, Christou M, Douni E, Fiedler IAK, Fonseca JE, Hassler E, Högler W, Kague E, Karasik D, Khashayar P, Langdahl BL, Leitch VD, Lopes P, Markozannes G, McGuigan FEA, Medina-Gomez C, Ntzani E, Oei L, Ohlsson C, Szulc P, Tobias JH, Trajanoska K, Tuzun Ş, Valjevac A, van Rietbergen B, Williams GR, Zekic T, Rivadeneira F, Obermayer-Pietsch B. Bone Phenotyping Approaches in Human, Mice and Zebrafish - Expert Overview of the EU Cost Action GEMSTONE ("GEnomics of MusculoSkeletal traits TranslatiOnal NEtwork"). Front Endocrinol (Lausanne) 2021; 12:720728. [PMID: 34925226 PMCID: PMC8672201 DOI: 10.3389/fendo.2021.720728] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/04/2021] [Accepted: 10/21/2021] [Indexed: 12/16/2022] Open
Abstract
A synoptic overview of scientific methods applied in bone and associated research fields across species has yet to be published. Experts from the EU Cost Action GEMSTONE ("GEnomics of MusculoSkeletal Traits translational Network") Working Group 2 present an overview of the routine techniques as well as clinical and research approaches employed to characterize bone phenotypes in humans and selected animal models (mice and zebrafish) of health and disease. The goal is consolidation of knowledge and a map for future research. This expert paper provides a comprehensive overview of state-of-the-art technologies to investigate bone properties in humans and animals - including their strengths and weaknesses. New research methodologies are outlined and future strategies are discussed to combine phenotypic with rapidly developing -omics data in order to advance musculoskeletal research and move towards "personalised medicine".
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Affiliation(s)
- Ines Foessl
- Department of Internal Medicine, Division of Endocrinology and Diabetology, Endocrine Lab Platform, Medical University of Graz, Graz, Austria
| | - J. H. Duncan Bassett
- Molecular Endocrinology Laboratory, Department of Metabolism, Digestion and Reproduction, Imperial College London, London, United Kingdom
| | - Åshild Bjørnerem
- Department of Clinical Medicine, UiT The Arctic University of Norway, Tromsø, Norway
- Norwegian Research Centre for Women’s Health, Oslo University Hospital, Oslo, Norway
| | - Björn Busse
- Department of Osteology and Biomechanics, University Medical Center, Hamburg-Eppendorf, Hamburg, Germany
| | - Ângelo Calado
- Instituto de Medicina Molecular João Lobo Antunes, Faculdade de Medicina, Universidade de Lisboa, Centro Académico de Medicina de Lisboa, Lisboa, Portugal
| | | | - Maria Christou
- Department of Hygiene and Epidemiology, Medical School, University of Ioannina, Ioannina, Greece
| | - Eleni Douni
- Institute for Bioinnovation, Biomedical Sciences Research Center “Alexander Fleming”, Vari, Greece
- Department of Biotechnology, Agricultural University of Athens, Athens, Greece
| | - Imke A. K. Fiedler
- Department of Osteology and Biomechanics, University Medical Center, Hamburg-Eppendorf, Hamburg, Germany
| | - João Eurico Fonseca
- Instituto de Medicina Molecular João Lobo Antunes, Faculdade de Medicina, Universidade de Lisboa, Centro Académico de Medicina de Lisboa, Lisboa, Portugal
- Rheumatology Department, Hospital de Santa Maria, Centro Hospitalar Universitário Lisboa Norte (CHULN), Lisbon Academic Medical Centre, Lisbon, Portugal
| | - Eva Hassler
- Division of Neuroradiology, Vascular and Interventional Radiology, Department of Radiology, Medical University Graz, Graz, Austria
| | - Wolfgang Högler
- Department of Paediatrics and Adolescent Medicine, Johannes Kepler University Linz, Linz, Austria
| | - Erika Kague
- The School of Physiology, Pharmacology and Neuroscience, Biomedical Sciences, University of Bristol, Bristol, United Kingdom
| | - David Karasik
- Azrieli Faculty of Medicine, Bar-Ilan University, Ramat Gan, Israel
| | - Patricia Khashayar
- Center for Microsystems Technology, Imec and Ghent University, Ghent, Belgium
| | - Bente L. Langdahl
- Department of Endocrinology and Internal Medicine, Aarhus University Hospital, Aarhus, Denmark
| | - Victoria D. Leitch
- Innovative Manufacturing Cooperative Research Centre, Royal Melbourne Institute of Technology, School of Engineering, Carlton, VIC, Australia
| | - Philippe Lopes
- Department of Clinical Sciences, Lund University, Malmö, Sweden
| | - Georgios Markozannes
- Department of Hygiene and Epidemiology, Medical School, University of Ioannina, Ioannina, Greece
| | | | | | - Evangelia Ntzani
- Department of Hygiene and Epidemiology, Medical School, University of Ioannina, Ioannina, Greece
- Department of Health Services, Policy and Practice, Center for Research Synthesis in Health, School of Public Health, Brown University, Providence, RI, United States
| | - Ling Oei
- Centre for Bone and Arthritis Research, Institute of Medicine, Sahlgrenska Academy at University of Gothenburg, Gothenburg, Sweden
| | - Claes Ohlsson
- Centre for Bone and Arthritis Research, Institute of Medicine, Sahlgrenska Academy at University of Gothenburg, Gothenburg, Sweden
- Department of Drug Treatment, Sahlgrenska University Hospital, Gothenburg, Sweden
| | - Pawel Szulc
- INSERM UMR 1033, University of Lyon, Lyon, France
| | - Jonathan H. Tobias
- Musculoskeletal Research Unit, Translational Health Sciences, Bristol Medical School, University of Bristol, Bristol, United Kingdom
- MRC Integrative Epidemiology Unit, Bristol Medical School, Bristol, University of Bristol, Bristol, United Kingdom
| | - Katerina Trajanoska
- Department of Internal Medicine, Erasmus MC Rotterdam, Rotterdam, Netherlands
| | - Şansın Tuzun
- Physical Medicine & Rehabilitation Department, Cerrahpasa Medical Faculty, Istanbul University-Cerrahpaşa, Istanbul, Turkey
| | - Amina Valjevac
- Department of Human Physiology, School of Medicine, University of Sarajevo, Sarajevo, Bosnia and Herzegovina
| | - Bert van Rietbergen
- Department of Biomedical Engineering, Eindhoven University of Technology, Eindhoven, Netherlands
| | - Graham R. Williams
- Molecular Endocrinology Laboratory, Department of Metabolism, Digestion and Reproduction, Imperial College London, London, United Kingdom
| | - Tatjana Zekic
- Department of Rheumatology and Clinical Immunology, Faculty of Medicine, Clinical Hospital Center Rijeka, Rijeka, Croatia
| | | | - Barbara Obermayer-Pietsch
- Department of Internal Medicine, Division of Endocrinology and Diabetology, Endocrine Lab Platform, Medical University of Graz, Graz, Austria
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8
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Hashimoto K, Kaito T, Kikuta J, Ishii M. Intravital imaging of orthotopic and ectopic bone. Inflamm Regen 2020; 40:26. [PMID: 33292699 PMCID: PMC7604953 DOI: 10.1186/s41232-020-00135-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2020] [Accepted: 07/31/2020] [Indexed: 12/02/2022] Open
Abstract
Bone homeostasis is dynamically regulated by a balance between bone resorption by osteoclasts and bone formation by osteoblasts. Visualizing and evaluating the dynamics of bone cells in vivo remain difficult using conventional technologies, including histomorphometry and imaging analysis. Over the past two decades, multiphoton microscopy, which can penetrate thick specimens, has been utilized in the field of biological imaging. Using this innovative technique, the in vivo dynamic motion of bone metabolism-related cells and their interactions has been revealed. In this review, we summarize previous approaches used for bone imaging and provide an overview of current bone tissue imaging methods using multiphoton excitation microscopy.
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Affiliation(s)
- Kunihiko Hashimoto
- Department of Orthopedic Surgery, Graduate School of Medicine, Osaka University, Osaka, 565-0871, Japan.,Department of Immunology and Cell Biology, Graduate School of Medicine & Frontier Biosciences, Osaka University, 2-2 Yamada-oka, Suita, Osaka, 565-0871, Japan
| | - Takashi Kaito
- Department of Orthopedic Surgery, Graduate School of Medicine, Osaka University, Osaka, 565-0871, Japan
| | - Junichi Kikuta
- Department of Immunology and Cell Biology, Graduate School of Medicine & Frontier Biosciences, Osaka University, 2-2 Yamada-oka, Suita, Osaka, 565-0871, Japan
| | - Masaru Ishii
- Department of Immunology and Cell Biology, Graduate School of Medicine & Frontier Biosciences, Osaka University, 2-2 Yamada-oka, Suita, Osaka, 565-0871, Japan.
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9
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Blázquez-Carmona P, Sanchez-Raya M, Mora-Macías J, Gómez-Galán JA, Domínguez J, Reina-Romo E. Real-Time Wireless Platform for In Vivo Monitoring of Bone Regeneration. SENSORS 2020; 20:s20164591. [PMID: 32824259 PMCID: PMC7472372 DOI: 10.3390/s20164591] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/01/2020] [Revised: 08/12/2020] [Accepted: 08/14/2020] [Indexed: 01/08/2023]
Abstract
For the monitoring of bone regeneration processes, the instrumentation of the fixation is an increasingly common technique to indirectly measure the evolution of bone formation instead of ex vivo measurements or traditional in vivo techniques, such as X-ray or visual review. A versatile instrumented external fixator capable of adapting to multiple bone regeneration processes was designed, as well as a wireless acquisition system for the data collection. The design and implementation of the overall architecture of such a system is described in this work, including the hardware, firmware, and mechanical components. The measurements are conditioned and subsequently sent to a PC via wireless communication to be in vivo displayed and analyzed using a developed real-time monitoring application. Moreover, a model for the in vivo estimation of the bone callus stiffness from collected data was defined. This model was validated in vitro using elastic springs, reporting promising results with respect to previous equipment, with average errors and uncertainties below 6.7% and 14.04%. The devices were also validated in vivo performing a bone lengthening treatment on a sheep metatarsus. The resulting system allowed the in vivo mechanical characterization of the bone callus during experimentation, providing a low-cost, simple, and highly reliable solution.
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Affiliation(s)
- Pablo Blázquez-Carmona
- Escuela Técnica Superior de Ingeniería, Universidad de Sevilla, 41092 Seville, Spain; (J.D.); (E.R.-R.)
- Correspondence: ; Tel.: +34-601-174-347
| | - Manuel Sanchez-Raya
- Escuela Técnica Superior de Ingeniería, Universidad de Huelva, 21007 Huelva, Spain; (M.S.-R.); (J.M.-M.); (J.A.G.-G.)
| | - Juan Mora-Macías
- Escuela Técnica Superior de Ingeniería, Universidad de Huelva, 21007 Huelva, Spain; (M.S.-R.); (J.M.-M.); (J.A.G.-G.)
| | - Juan Antonio Gómez-Galán
- Escuela Técnica Superior de Ingeniería, Universidad de Huelva, 21007 Huelva, Spain; (M.S.-R.); (J.M.-M.); (J.A.G.-G.)
| | - Jaime Domínguez
- Escuela Técnica Superior de Ingeniería, Universidad de Sevilla, 41092 Seville, Spain; (J.D.); (E.R.-R.)
| | - Esther Reina-Romo
- Escuela Técnica Superior de Ingeniería, Universidad de Sevilla, 41092 Seville, Spain; (J.D.); (E.R.-R.)
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10
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Lienemann PS, Vallmajo‐Martin Q, Papageorgiou P, Blache U, Metzger S, Kiveliö A, Milleret V, Sala A, Hoehnel S, Roch A, Reuten R, Koch M, Naveiras O, Weber FE, Weber W, Lutolf MP, Ehrbar M. Smart Hydrogels for the Augmentation of Bone Regeneration by Endogenous Mesenchymal Progenitor Cell Recruitment. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2020; 7:1903395. [PMID: 32274319 PMCID: PMC7141038 DOI: 10.1002/advs.201903395] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/26/2019] [Revised: 12/27/2019] [Indexed: 04/14/2023]
Abstract
The treatment of bone defects with recombinant bone morphogenetic protein-2 (BMP-2) requires high doses precluding broad clinical application. Here, a bioengineering approach is presented that strongly improves low-dose BMP-2-based bone regeneration by mobilizing healing-associated mesenchymal progenitor cells (MPCs). Smart synthetic hydrogels are used to trap and study endogenous MPCs trafficking to bone defects. Hydrogel-trapped and prospectively isolated MPCs differentiate into multiple lineages in vitro and form bone in vivo. In vitro screenings reveal that platelet-derived growth factor BB (PDGF-BB) strongly recruits prospective MPCs making it a promising candidate for the engineering of hydrogels that enrich endogenous MPCs in vivo. However, PDGF-BB inhibits BMP-2-mediated osteogenesis both in vitro and in vivo. In contrast, smart two-way dynamic release hydrogels with fast-release of PDGF-BB and sustained delivery of BMP-2 beneficially promote the healing of bone defects. Collectively, it is shown that modulating the dynamics of endogenous progenitor cells in vivo by smart synthetic hydrogels significantly improves bone healing and holds great potential for other advanced applications in regenerative medicine.
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Affiliation(s)
- Philipp S. Lienemann
- Department of ObstetricsUniversity Hospital ZurichUniversity of ZurichSchmelzbergstr. 12Zurich8091Switzerland
- Institute of BioengineeringSchool of Life Sciences and School of EngineeringEcole Polytechnique Fédérale de Lausanne (EPFL)Station 15Lausanne1015Switzerland
| | - Queralt Vallmajo‐Martin
- Department of ObstetricsUniversity Hospital ZurichUniversity of ZurichSchmelzbergstr. 12Zurich8091Switzerland
- Institute of BioengineeringSchool of Life Sciences and School of EngineeringEcole Polytechnique Fédérale de Lausanne (EPFL)Station 15Lausanne1015Switzerland
| | - Panagiota Papageorgiou
- Department of ObstetricsUniversity Hospital ZurichUniversity of ZurichSchmelzbergstr. 12Zurich8091Switzerland
| | - Ulrich Blache
- Department of ObstetricsUniversity Hospital ZurichUniversity of ZurichSchmelzbergstr. 12Zurich8091Switzerland
| | - Stéphanie Metzger
- Department of ObstetricsUniversity Hospital ZurichUniversity of ZurichSchmelzbergstr. 12Zurich8091Switzerland
- Institute of BioengineeringSchool of Life Sciences and School of EngineeringEcole Polytechnique Fédérale de Lausanne (EPFL)Station 15Lausanne1015Switzerland
| | - Anna‐Sofia Kiveliö
- Department of ObstetricsUniversity Hospital ZurichUniversity of ZurichSchmelzbergstr. 12Zurich8091Switzerland
- Institute of BioengineeringSchool of Life Sciences and School of EngineeringEcole Polytechnique Fédérale de Lausanne (EPFL)Station 15Lausanne1015Switzerland
| | - Vincent Milleret
- Department of ObstetricsUniversity Hospital ZurichUniversity of ZurichSchmelzbergstr. 12Zurich8091Switzerland
| | - Ana Sala
- Department of ObstetricsUniversity Hospital ZurichUniversity of ZurichSchmelzbergstr. 12Zurich8091Switzerland
| | - Sylke Hoehnel
- Institute of BioengineeringSchool of Life Sciences and School of EngineeringEcole Polytechnique Fédérale de Lausanne (EPFL)Station 15Lausanne1015Switzerland
| | - Aline Roch
- Institute of BioengineeringSchool of Life Sciences and School of EngineeringEcole Polytechnique Fédérale de Lausanne (EPFL)Station 15Lausanne1015Switzerland
| | - Raphael Reuten
- Institute for Dental Research and Oral Musculoskeletal BiologyCenter for BiochemistryUniversity of CologneCologne50931Germany
| | - Manuel Koch
- Institute for Dental Research and Oral Musculoskeletal BiologyCenter for BiochemistryUniversity of CologneCologne50931Germany
| | - Olaia Naveiras
- Institute of BioengineeringSchool of Life Sciences and School of EngineeringEcole Polytechnique Fédérale de Lausanne (EPFL)Station 15Lausanne1015Switzerland
| | - Franz E. Weber
- Department of Cranio‐Maxillofacial SurgeryOral Biotechnology and BioengineeringUniversity Hospital ZurichFrauenklinikstrasse 24Zurich8091Switzerland
| | - Wilfried Weber
- Faculty of Biology and BIOSS Centre for Biological Signalling StudiesUniversity of FreiburgSchänzlestr. 18Freiburg79104Germany
| | - Matthias P. Lutolf
- Institute of BioengineeringSchool of Life Sciences and School of EngineeringEcole Polytechnique Fédérale de Lausanne (EPFL)Station 15Lausanne1015Switzerland
| | - Martin Ehrbar
- Department of ObstetricsUniversity Hospital ZurichUniversity of ZurichSchmelzbergstr. 12Zurich8091Switzerland
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11
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Photobiomodulation Therapy (PBMT) Applied in Bone Reconstructive Surgery Using Bovine Bone Grafts: A Systematic Review. MATERIALS 2019; 12:ma12244051. [PMID: 31817369 PMCID: PMC6947623 DOI: 10.3390/ma12244051] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/16/2019] [Revised: 11/22/2019] [Accepted: 11/29/2019] [Indexed: 02/07/2023]
Abstract
The use of low-level laser therapy (LLLT) with biomodulatory effects on biological tissues, currently called photobiomodulation therapy (PBMT), assists in healing and reduces inflammation. The application of biomaterials has emerged in bone reconstructive surgery, especially the use of bovine bone due to its biocompatibility. Due to the many benefits related to the use of PBMT and bovine bones, the aim of this research was to review the literature to verify the relationship between PBMT and the application of bovine bone in bone reconstruction surgeries. We chose the PubMed/MEDLINE, Web of Science, and Scopus databases for the search by matching the keywords: “Bovine bone AND low-level laser therapy”, “Bovine bone AND photobiomodulation therapy”, “Xenograft AND low-level laser therapy”, and “Xenograft AND photobiomodulation therapy”. The initial search of the three databases retrieved 240 articles, 18 of which met all inclusion criteria. In the studies concerning animals (17 in total), there was evidence of PBMT assisting in biomaterial-related conduction, formation of new bone, bone healing, immunomarker expression, increasing collagen fibers, and local inflammation reduction. However, the results disagreed with regard to the resorption of biomaterial particles. The only human study showed that PBMT with bovine bone was effective for periodontal regeneration. It was concluded that PBMT assists the process in bone reconstruction when associated with bovine bone, despite divergences between applied protocols.
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12
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Strecker SE, Unterman S, Charles LF, Pivovarchick D, Maye PF, Edelman ER, Artzi N. Osterix-mCherry Expression Allows for Early Bone Detection in a Calvarial Defect Model. ADVANCED BIOSYSTEMS 2019; 3:e1900184. [PMID: 32648681 PMCID: PMC7393777 DOI: 10.1002/adbi.201900184] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/14/2019] [Revised: 09/11/2019] [Indexed: 11/09/2022]
Abstract
The process of new bone formation following trauma requires the temporal recruitment of cells to the site, including mesenchymal stem cells, preosteoblasts, and osteoblasts, the latter of which deposit minerals. Hence, bone repair, a process that is assessed by the extent of mineralization within the defect, can take months before it is possible to determine if a treatment is successful. Here, a fluorescently tagged Osterix, an early key gene in the bone formation cascade, is used as a predictive measure of bone formation. Using a calvarial defect model in mice, the ability to noninvasively track the Osterix transcription factor in an Osterix-mCherry mouse model is evaluated as a measure for bone formation following treatment with recombinant human Bone-Morphogenetic-Protein 2 (rhBMP-2). Two distinct delivery materials are utilized, an injectable nanocomposite hydrogel and a collagen sponge, that afford distinct release kinetics and it is found that cherry-fluorescent protein can be detected as early as 2 weeks following treatment. Osterix intensity correlates with subsequent bone formation and hence can serve as a rapid screening tool for osteogenic drugs or for the evaluation and optimization of delivery platforms.
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Affiliation(s)
- Sara E Strecker
- Massachusetts Institute of Technology, Institute for Medical Engineering and Science, 45 Carleton Street, E25-438, Cambridge, MA, 02139, USA
| | - Shimon Unterman
- Massachusetts Institute of Technology, Institute for Medical Engineering and Science, 45 Carleton Street, E25-438, Cambridge, MA, 02139, USA
| | - Lyndon F Charles
- Massachusetts Institute of Technology, Institute for Medical Engineering and Science, 45 Carleton Street, E25-438, Cambridge, MA, 02139, USA
| | - Dmitry Pivovarchick
- Department of Reconstructive Sciences, University of Connecticut, Farmington, CT, 06032, USA
| | - Peter F Maye
- Cardiovascular Division, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, 02115, USA
| | - Elazer R Edelman
- Massachusetts Institute of Technology, Institute for Medical Engineering and Science, 45 Carleton Street, E25-438, Cambridge, MA, 02139, USA
- Ort Braude College, 51 Swallow Street, Karmiel, 2161002, Haifa, Israel
| | - Natalie Artzi
- Massachusetts Institute of Technology, Institute for Medical Engineering and Science, 45 Carleton Street, E25-438, Cambridge, MA, 02139, USA
- Department of Medicine, Division of Engineering in Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, 02115, USA
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13
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Expanded skeletal stem and progenitor cells promote and participate in induced bone regeneration at subcritical BMP-2 dose. Biomaterials 2019; 217:119278. [DOI: 10.1016/j.biomaterials.2019.119278] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2019] [Revised: 06/11/2019] [Accepted: 06/11/2019] [Indexed: 01/05/2023]
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14
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Fragogeorgi EA, Rouchota M, Georgiou M, Velez M, Bouziotis P, Loudos G. In vivo imaging techniques for bone tissue engineering. J Tissue Eng 2019; 10:2041731419854586. [PMID: 31258885 PMCID: PMC6589947 DOI: 10.1177/2041731419854586] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Abstract
Bone is a dynamic tissue that constantly undergoes modeling and remodeling. Bone tissue engineering relying on the development of novel implant scaffolds for the treatment of pre-clinical bone defects has been extensively evaluated by histological techniques. The study of bone remodeling, that takes place over several weeks, is limited by the requirement of a large number of animals and time-consuming and labor-intensive procedures. X-ray-based imaging methods that can non-invasively detect the newly formed bone tissue have therefore been extensively applied in pre-clinical research and in clinical practice. The use of other imaging techniques at a pre-clinical level that act as supportive tools is convenient. This review mainly focuses on nuclear imaging methods (single photon emission computed tomography and positron emission tomography), either alone or used in combination with computed tomography. It addresses their application to small animal models with bone defects, both untreated and filled with substitute materials, to boost the knowledge on bone regenerative processes.
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Affiliation(s)
- Eirini A Fragogeorgi
- Institute of Nuclear & Radiological Sciences and Technology, Energy & Safety (INRASTES), NCSR "Demokritos", Athens, Greece
| | - Maritina Rouchota
- Bioemission Technology Solutions (BIOEMTECH), Athens, Greece / Lefkippos Attica Technology Park, NCSR "Demokritos", Athens, Greece
| | - Maria Georgiou
- Department of Biomedical Engineering, University of West Attica, Athens, Greece
| | - Marisela Velez
- Instituto de Catálisis y Petroleoquímica (CSIC), Madrid, Spain
| | - Penelope Bouziotis
- Institute of Nuclear & Radiological Sciences and Technology, Energy & Safety (INRASTES), NCSR "Demokritos", Athens, Greece
| | - George Loudos
- Institute of Nuclear & Radiological Sciences and Technology, Energy & Safety (INRASTES), NCSR "Demokritos", Athens, Greece.,Bioemission Technology Solutions (BIOEMTECH), Athens, Greece / Lefkippos Attica Technology Park, NCSR "Demokritos", Athens, Greece
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15
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Mathavan N, Koopman J, Raina DB, Turkiewicz A, Tägil M, Isaksson H. 18F-fluoride as a prognostic indicator of bone regeneration. Acta Biomater 2019; 90:403-411. [PMID: 30965143 DOI: 10.1016/j.actbio.2019.04.008] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2018] [Revised: 03/29/2019] [Accepted: 04/02/2019] [Indexed: 01/19/2023]
Abstract
Positron emission tomography (PET) is a form of nuclear imaging, which quantitatively assesses the metabolic activity through the uptake of radioactive tracers. 18F-fluoride is a positron-emitting isotope with high affinity for bone. Despite its potential as a non-invasive measure of bone metabolism, quantitative 18F-fluoride PET has only been used sparsely in orthopaedic applications. It has been speculated that 18F-fluoride PET characterizes cellular activity of bone forming cells in the early stages of the regenerative process and therefore precedes the mineralization detected by conventional computed tomography (CT). Our aim was thus to combine in vivo PET and CT to map the spatiotemporal course of bone regeneration during fracture healing using an open femur fracture model in the rat and characterize regeneration in untreated and pharmacologically treated fractures using both imaging modalities. We hypothesized that PET 18F-fluoride tracer activity at an earlier time point is predictive of CT measured bone formation at a later time point. On the basis of the RMSE and R2 metrics of linear regression models it was conceivable for bone volumes to be predicted up to three weeks in advance in a rodent model (RMSE: 14 mm3-18 mm3, R2: 0.79-0.82). Moreover, the data suggested that 18F-fluoride positron-emitting activity had the potential to separate bone formation from resorption and thus could be of interest across a wide array of orthopaedic applications. Based on this data, we conclude that 18F-fluoride positron-emitting activity is strongly correlated to bone formation and could potentially predict the volume of bone regenerated at fracture sites. The volume of bone regenerated at a fracture site can be interpreted as a measure of the healing response and 18F-fluoride should be further investigated as a predictive diagnostic tool to identify if bone fractures will heal successfully or result in delayed healing or non-union. STATEMENT OF SIGNIFICANCE: We aimed to combine in vivo PET and CT imaging to map the spatiotemporal course of bone regeneration during fracture healing using an open femur fracture model in the rat and characterize regeneration in untreated and pharmacologically treated fractures using both imaging modalities. We hypothesized that PET 18F-fluoride tracer activity at an earlier time point is predictive of CT measured bone formation at a later time point. Our data suggest that 18F-fluoride positron-emitting activity can separate bone formation from resorption and thus could be of interest across a wide array of orthopaedic applications including as a predictive diagnostic tool to identify if fractures will heal successfully or result in delayed healing or non-union.
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Affiliation(s)
- Neashan Mathavan
- Department of Biomedical Engineering, Lund University, Lund, Sweden
| | - Janine Koopman
- Department of Biomedical Engineering, Lund University, Lund, Sweden; Eindhoven University of Technology, Eindhoven, the Netherlands
| | - Deepak Bushan Raina
- Department of Orthopaedics, Clinical Sciences, Lund University, Lund, Sweden
| | - Aleksandra Turkiewicz
- Lund OsteoArthritis Division - Clinical Epidemiology Unit, Lund University, Lund, Sweden
| | - Magnus Tägil
- Department of Orthopaedics, Clinical Sciences, Lund University, Lund, Sweden
| | - Hanna Isaksson
- Department of Biomedical Engineering, Lund University, Lund, Sweden; Department of Orthopaedics, Clinical Sciences, Lund University, Lund, Sweden.
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16
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Dooley M, Prasopthum A, Liao Z, Sinjab F, McLaren J, Rose FRAJ, Yang J, Notingher I. Spatially-offset Raman spectroscopy for monitoring mineralization of bone tissue engineering scaffolds: feasibility study based on phantom samples. BIOMEDICAL OPTICS EXPRESS 2019; 10:1678-1690. [PMID: 31061762 PMCID: PMC6484990 DOI: 10.1364/boe.10.001678] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/21/2018] [Revised: 02/01/2019] [Accepted: 02/06/2019] [Indexed: 05/21/2023]
Abstract
Using phantom samples, we investigated the feasibility of spatially-offset Raman spectroscopy (SORS) as a tool for monitoring non-invasively the mineralization of bone tissue engineering scaffold in-vivo. The phantom samples consisted of 3D-printed scaffolds of poly-caprolactone (PCL) and hydroxyapatite (HA) blends, with varying concentrations of HA, to mimic the mineralisation process. The scaffolds were covered by a 4 mm layer of skin to simulate the real in-vivo measurement conditions. At a concentration of HA approximately 1/3 that of bone (~0.6 g/cm3), the characteristic Raman band of HA (960 cm-1) was detectable when the PCL:HA layer was located at 4 mm depth within the scaffold (i.e. 8 mm below the skin surface). For the layers of the PCL:HA immediately under the skin (i.e. top of the scaffold), the detection limit of HA was 0.18 g/cm3, which is approximately one order of magnitude lower than that of bone. Similar results were also found for the phantoms simulating uniform and inward gradual mineralisation of the scaffold, indicating the suitability of SORS to detect early stages of mineralisation. Nevertheless, the results also show that the contribution of the materials surrounding the scaffold can be significant and methods for subtraction need to be investigated in the future. In conclusion, these results indicate that spatially-offset Raman spectroscopy is a promising technique for in-vivo longitudinal monitoring scaffold mineralization and bone re-growth.
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Affiliation(s)
- Max Dooley
- School of Physics and Astronomy, University of Nottingham, University Park, Nottingham NG7 2RD, UK
| | - Aruna Prasopthum
- School of Pharmacy, University of Nottingham, University Park, Nottingham NG7 2RD, UK
| | - Zhiyu Liao
- School of Physics and Astronomy, University of Nottingham, University Park, Nottingham NG7 2RD, UK
| | - Faris Sinjab
- School of Physics and Astronomy, University of Nottingham, University Park, Nottingham NG7 2RD, UK
| | - Jane McLaren
- School of Pharmacy, University of Nottingham, University Park, Nottingham NG7 2RD, UK
| | | | - Jing Yang
- School of Pharmacy, University of Nottingham, University Park, Nottingham NG7 2RD, UK
| | - Ioan Notingher
- School of Physics and Astronomy, University of Nottingham, University Park, Nottingham NG7 2RD, UK
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17
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Cengiz IF, Oliveira JM, Reis RL. Micro-CT - a digital 3D microstructural voyage into scaffolds: a systematic review of the reported methods and results. Biomater Res 2018; 22:26. [PMID: 30275969 PMCID: PMC6158835 DOI: 10.1186/s40824-018-0136-8] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2018] [Accepted: 09/03/2018] [Indexed: 01/28/2023] Open
Abstract
BACKGROUND Cell behavior is the key to tissue regeneration. Given the fact that most of the cells used in tissue engineering are anchorage-dependent, their behavior including adhesion, growth, migration, matrix synthesis, and differentiation is related to the design of the scaffolds. Thus, characterization of the scaffolds is highly required. Micro-computed tomography (micro-CT) provides a powerful platform to analyze, visualize, and explore any portion of interest in the scaffold in a 3D fashion without cutting or destroying it with the benefit of almost no sample preparation need. MAIN BODY This review highlights the relationship between the scaffold microstructure and cell behavior, and provides the basics of the micro-CT method. In this work, we also analyzed the original papers that were published in 2016 through a systematic search to address the need for specific improvements in the methods section of the papers including the amount of provided information from the obtained results. CONCLUSION Micro-CT offers a unique microstructural analysis of biomaterials, notwithstanding the associated challenges and limitations. Future studies that will include micro-CT characterization of scaffolds should report the important details of the method, and the derived quantitative and qualitative information can be maximized.
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Affiliation(s)
- Ibrahim Fatih Cengiz
- 3B’s Research Group, I3Bs – Research Institute on Biomaterials, Biodegradables and Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, AvePark, Parque de Ciência e Tecnologia, Zona Industrial da Gandra, Barco, 4805-017 Guimarães, Portugal
- ICVS/3B’s – PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - Joaquim Miguel Oliveira
- 3B’s Research Group, I3Bs – Research Institute on Biomaterials, Biodegradables and Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, AvePark, Parque de Ciência e Tecnologia, Zona Industrial da Gandra, Barco, 4805-017 Guimarães, Portugal
- ICVS/3B’s – PT Government Associate Laboratory, Braga/Guimarães, Portugal
- The Discoveries Centre for Regenerative and Precision Medicine, Headquarters at University of Minho, AvePark, Parque de Ciência e Tecnologia, Zona Industrial da Gandra, Barco, 4805-017 Guimarães, Portugal
| | - Rui L. Reis
- 3B’s Research Group, I3Bs – Research Institute on Biomaterials, Biodegradables and Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, AvePark, Parque de Ciência e Tecnologia, Zona Industrial da Gandra, Barco, 4805-017 Guimarães, Portugal
- ICVS/3B’s – PT Government Associate Laboratory, Braga/Guimarães, Portugal
- The Discoveries Centre for Regenerative and Precision Medicine, Headquarters at University of Minho, AvePark, Parque de Ciência e Tecnologia, Zona Industrial da Gandra, Barco, 4805-017 Guimarães, Portugal
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18
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Khosravi N, Maeda A, DaCosta RS, Davies JE. Nanosurfaces modulate the mechanism of peri-implant endosseous healing by regulating neovascular morphogenesis. Commun Biol 2018; 1:72. [PMID: 30271953 PMCID: PMC6123776 DOI: 10.1038/s42003-018-0074-y] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2018] [Accepted: 05/10/2018] [Indexed: 02/06/2023] Open
Abstract
Nanosurfaces have improved clinical osseointegration by increasing bone/implant contact. Neovascularization is considered an essential prerequisite to osteogenesis, but no previous reports to our knowledge have examined the effect of surface topography on the spatio-temporal pattern of neovascularization during peri-implant healing. We have developed a cranial window model to study peri-implant healing intravitally over clinically relevant time scales as a function of implant topography. Quantitative intravital confocal imaging reveals that changing the topography (but not chemical composition) of an implant profoundly affects the pattern of peri-implant neovascularization. New vessels develop proximal to the implant and the vascular network matures sooner in the presence of an implant nanosurface. Accelerated angiogenesis can lead to earlier osseointegration through the delivery of osteogenic precursors to, and direct formation of bone on, the implant surface. This study highlights a critical aspect of peri-implant healing, but also informs the biological rationale for the surface design of putative endosseous implant materials.
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Affiliation(s)
- Niloufar Khosravi
- Institute for Biomaterials and Biomedical Engineering, University of Toronto, Toronto, ON, M5G 1G6, Canada
- Faculty of Dentistry, University of Toronto, Toronto, ON, M5G 1G6, Canada
- Princess Margaret Cancer Center, University Health Network, Toronto, ON, M5G 1L7, Canada
| | - Azusa Maeda
- Princess Margaret Cancer Center, University Health Network, Toronto, ON, M5G 1L7, Canada
- Department of Medical Biophysics, University of Toronto, Toronto, ON, M5G 1L7, Canada
| | - Ralph S DaCosta
- Princess Margaret Cancer Center, University Health Network, Toronto, ON, M5G 1L7, Canada.
- Department of Medical Biophysics, University of Toronto, Toronto, ON, M5G 1L7, Canada.
- Techna Institute, University Health Network, Toronto, ON, M5G 1L5, Canada.
| | - John E Davies
- Institute for Biomaterials and Biomedical Engineering, University of Toronto, Toronto, ON, M5G 1G6, Canada.
- Faculty of Dentistry, University of Toronto, Toronto, ON, M5G 1G6, Canada.
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19
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Porter A, Irwin R, Miller J, Horan DJ, Robling AG, McCabe LR. Quick and inexpensive paraffin-embedding method for dynamic bone formation analyses. Sci Rep 2017; 7:42505. [PMID: 28198415 PMCID: PMC5309838 DOI: 10.1038/srep42505] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2016] [Accepted: 01/13/2017] [Indexed: 12/11/2022] Open
Abstract
We have developed a straightforward method that uses paraffin-embedded bone for undemineralized thin sectioning, which is amenable to subsequent dynamic bone formation measurements. Bone has stiffer material properties than paraffin, and therefore has hereforto usually been embedded in plastic blocks, cured and sectioned with a tungsten carbide knife to obtain mineralized bone sections for dynamic bone formation measures. This process is expensive and requires special equipment, experienced personnel, and time for the plastic to penetrate the bone and cure. Our method utilizes a novel way to prepare mineralized bone that increases its compliance so that it can be embedded and easily section in paraffin blocks. The approach is simple, quick, and costs less than 10% of the price for plastic embedded bone sections. While not effective for static bone measures, this method allows dynamic bone analyses to be readily performed in laboratories worldwide which might not otherwise have access to traditional (plastic) equipment and expertise.
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Affiliation(s)
- Amy Porter
- Department of Physiology, Michigan State University, East Lansing, Michigan, USA.,Investigative HistoPathology Lab, Michigan State University, East Lansing, Michigan, USA
| | - Regina Irwin
- Department of Physiology, Michigan State University, East Lansing, Michigan, USA
| | - Josselyn Miller
- Department of Physiology, Michigan State University, East Lansing, Michigan, USA.,Investigative HistoPathology Lab, Michigan State University, East Lansing, Michigan, USA
| | - Daniel J Horan
- Department of Anatomy and Cell Biology, Indiana University, Indianapolis, Indiana, USA
| | - Alexander G Robling
- Department of Anatomy and Cell Biology, Indiana University, Indianapolis, Indiana, USA
| | - Laura R McCabe
- Department of Physiology, Michigan State University, East Lansing, Michigan, USA.,Department of Radiology, Michigan State University, East Lansing, Michigan, USA.,Biomedical Imaging Research Center, Michigan State University, East Lansing, Michigan, USA
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20
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Yassin MA, Mustafa K, Xing Z, Sun Y, Fasmer KE, Waag T, Krueger A, Steinmüller-Nethl D, Finne-Wistrand A, Leknes KN. A Copolymer Scaffold Functionalized with Nanodiamond Particles Enhances Osteogenic Metabolic Activity and Bone Regeneration. Macromol Biosci 2017; 17. [DOI: 10.1002/mabi.201600427] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2016] [Revised: 12/13/2016] [Indexed: 12/31/2022]
Affiliation(s)
- Mohammed A. Yassin
- Department of Clinical Dentistry; Center for Clinical Dental Research Faculty of Medicine and Dentistry; University of Bergen; N-5020 Bergen Norway
| | - Kamal Mustafa
- Department of Clinical Dentistry; Center for Clinical Dental Research Faculty of Medicine and Dentistry; University of Bergen; N-5020 Bergen Norway
| | - Zhe Xing
- Department of Clinical Dentistry; Center for Clinical Dental Research Faculty of Medicine and Dentistry; University of Bergen; N-5020 Bergen Norway
- Department of Clinical Science; Faculty of Medicine and Dentistry; University of Bergen; N-5020 Bergen Norway
| | - Yang Sun
- Department of Clinical Dentistry; Center for Clinical Dental Research Faculty of Medicine and Dentistry; University of Bergen; N-5020 Bergen Norway
- Department of Fibre and Polymer Technology, KTH; Royal Institute of Technology; SE-100 44 Stockholm Sweden
| | - Kristine Eldevik Fasmer
- Center for Nuclear Medicine/PET; Department of Radiology; Haukeland University Hospital; N-5021 Bergen Norway
| | - Thilo Waag
- Institute of Organic Chemistry; University of Würzburg; 97070 Würzburg Germany
| | - Anke Krueger
- Institute of Organic Chemistry; University of Würzburg; 97070 Würzburg Germany
| | | | - Anna Finne-Wistrand
- Department of Fibre and Polymer Technology, KTH; Royal Institute of Technology; SE-100 44 Stockholm Sweden
| | - Knut N. Leknes
- Department of Clinical Dentistry; Center for Clinical Dental Research Faculty of Medicine and Dentistry; University of Bergen; N-5020 Bergen Norway
- Department of Clinical Dentistry-Periodontics; Faculty of Medicine and Dentistry; University of Bergen; N-5020 Bergen Norway
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21
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Wang Z, Wu D, Zou J, Zhou Q, Liu W, Zhang W, Zhou G, Wang X, Pei G, Cao Y, Zhang ZY. Development of demineralized bone matrix-based implantable and biomimetic microcarrier for stem cell expansion and single-step tissue-engineered bone graft construction. J Mater Chem B 2017; 5:62-73. [DOI: 10.1039/c6tb02414a] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Tissue engineered bone grafts (TEBG) using mesenchymal stem cells (MSCs) demonstrate great potential for bone defect treatment.
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22
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Bardsley K, Deegan AJ, El Haj A, Yang Y. Current State-of-the-Art 3D Tissue Models and Their Compatibility with Live Cell Imaging. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2017; 1035:3-18. [PMID: 29080127 DOI: 10.1007/978-3-319-67358-5_1] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Mammalian cells grow within a complex three-dimensional (3D) microenvironment where multiple cells are organized and surrounded by extracellular matrix (ECM). The quantity and types of ECM components, alongside cell-to-cell and cell-to-matrix interactions dictate cellular differentiation, proliferation and function in vivo. To mimic natural cellular activities, various 3D tissue culture models have been established to replace conventional two dimensional (2D) culture environments. Allowing for both characterization and visualization of cellular activities within possibly bulky 3D tissue models presents considerable challenges due to the increased thickness and subsequent light scattering features of such 3D models. In this chapter, state-of-the-art methodologies used to establish 3D tissue models are discussed, first with a focus on both scaffold-free and scaffold-based 3D tissue model formation. Following on, multiple 3D live cell imaging systems, mainly optical imaging modalities, are introduced. Their advantages and disadvantages are discussed, with the aim of stimulating more research in this highly demanding research area.
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Affiliation(s)
- Katie Bardsley
- Institute for Science and Technology in Medicine, Keele University, Stoke-on-Trent, ST4 7QB, UK
| | - Anthony J Deegan
- Institute for Science and Technology in Medicine, Keele University, Stoke-on-Trent, ST4 7QB, UK
| | - Alicia El Haj
- Institute for Science and Technology in Medicine, Keele University, Stoke-on-Trent, ST4 7QB, UK
| | - Ying Yang
- Institute for Science and Technology in Medicine, Keele University, Stoke-on-Trent, ST4 7QB, UK.
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23
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Longitudinal imaging of the ageing mouse. Mech Ageing Dev 2016; 160:93-116. [PMID: 27530773 DOI: 10.1016/j.mad.2016.08.001] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2016] [Revised: 07/30/2016] [Accepted: 08/04/2016] [Indexed: 12/13/2022]
Abstract
Several non-invasive imaging techniques are used to investigate the effect of pathologies and treatments over time in mouse models. Each preclinical in vivo technique provides longitudinal and quantitative measurements of changes in tissues and organs, which are fundamental for the evaluation of alterations in phenotype due to pathologies, interventions and treatments. However, it is still unclear how these imaging modalities can be used to study ageing with mice models. Almost all age related pathologies in mice such as osteoporosis, arthritis, diabetes, cancer, thrombi, dementia, to name a few, can be imaged in vivo by at least one longitudinal imaging modality. These measurements are the basis for quantification of treatment effects in the development phase of a novel treatment prior to its clinical testing. Furthermore, the non-invasive nature of such investigations allows the assessment of different tissue and organ phenotypes in the same animal and over time, providing the opportunity to study the dysfunction of multiple tissues associated with the ageing process. This review paper aims to provide an overview of the applications of the most commonly used in vivo imaging modalities used in mouse studies: micro-computed-tomography, preclinical magnetic-resonance-imaging, preclinical positron-emission-tomography, preclinical single photon emission computed tomography, ultrasound, intravital microscopy, and whole body optical imaging.
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A Bone Sample Containing a Bone Graft Substitute Analyzed by Correlating Density Information Obtained by X-ray Micro Tomography with Compositional Information Obtained by Raman Microscopy. MATERIALS 2015; 8:3831-3853. [PMID: 28793410 PMCID: PMC5455664 DOI: 10.3390/ma8073831] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/30/2015] [Revised: 05/26/2015] [Accepted: 06/15/2015] [Indexed: 11/29/2022]
Abstract
The ability of bone graft substitutes to promote new bone formation has been increasingly used in the medical field to repair skeletal defects or to replace missing bone in a broad range of applications in dentistry and orthopedics. A common way to assess such materials is via micro computed tomography (µ-CT), through the density information content provided by the absorption of X-rays. Information on the chemical composition of a material can be obtained via Raman spectroscopy. By investigating a bone sample from miniature pigs containing the bone graft substitute Bio Oss®, we pursued the target of assessing to what extent the density information gained by µ-CT imaging matches the chemical information content provided by Raman spectroscopic imaging. Raman images and Raman correlation maps of the investigated sample were used in order to generate a Raman based segmented image by means of an agglomerative, hierarchical cluster analysis. The resulting segments, showing chemically related areas, were subsequently compared with the µ-CT image by means of a one-way ANOVA. We found out that to a certain extent typical gray-level values (and the related histograms) in the µ-CT image can be reliably related to specific segments within the image resulting from the cluster analysis.
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