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Shanbhag S, Kampleitner C, Sanz-Esporrin J, Lie SA, Gruber R, Mustafa K, Sanz M. Regeneration of alveolar bone defects in the experimental pig model: A systematic review and meta-analysis. Clin Oral Implants Res 2024. [PMID: 38450852 DOI: 10.1111/clr.14253] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2023] [Revised: 02/16/2024] [Accepted: 02/20/2024] [Indexed: 03/08/2024]
Abstract
OBJECTIVE Pigs are emerging as a preferred experimental in vivo model for bone regeneration. The study objective was to answer the focused PEO question: in the pig model (P), what is the capacity of experimental alveolar bone defects (E) for spontaneous regeneration in terms of new bone formation (O)? METHODS Following PRISMA guidelines, electronic databases were searched for studies reporting experimental bone defects or extraction socket healing in the maxillae or mandibles of pigs. The main inclusion criteria were the presence of a control group of untreated defects/sockets and the assessment of regeneration via 3D tomography [radiographic defect fill (RDF)] or 2D histomorphometry [new bone formation (NBF)]. Random effects meta-analyses were performed for the outcomes RDF and NBF. RESULTS Overall, 45 studies were included reporting on alveolar bone defects or extraction sockets, most frequently in the mandibles of minipigs. Based on morphology, defects were broadly classified as 'box-defects' (BD) or 'cylinder-defects' (CD) with a wide range of healing times (10 days to 52 weeks). Meta-analyses revealed pooled estimates (with 95% confidence intervals) of 50% RDF (36.87%-63.15%) and 43.74% NBF (30.47%-57%) in BD, and 44% RDF (16.48%-71.61%) and 39.67% NBF (31.53%-47.81%) in CD, which were similar to estimates of socket-healing [48.74% RDF (40.35%-57.13%) and 38.73% NBF (28.57%-48.89%)]. Heterogeneity in the meta-analysis was high (I2 > 90%). CONCLUSION A substantial body of literature revealed a high capacity for spontaneous regeneration in experimental alveolar bone defects of (mini)pigs, which should be considered in future studies of bone regeneration in this animal model.
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Affiliation(s)
- Siddharth Shanbhag
- Department of Immunology and Transfusion Medicine, Haukeland University Hospital, Bergen, Norway
- Center for Translational Oral Research (TOR), Department of Clinical Dentistry, Faculty of Medicine, University of Bergen, Bergen, Norway
| | - Carina Kampleitner
- Karl Donath Laboratory for Hard Tissue and Biomaterial Research, Division of Oral Surgery, University Clinic of Dentistry, Medical University of Vienna, Vienna, Austria
- Ludwig Boltzmann Institute for Experimental and Clinical Traumatology, The Research Center in Cooperation with AUVA, Vienna, Austria
- Austrian Cluster for Tissue Regeneration, Vienna, Austria
| | - Javier Sanz-Esporrin
- ETEP Research Group, Faculty of Odontology, University Complutense of Madrid, Madrid, Spain
| | - Stein-Atle Lie
- Center for Translational Oral Research (TOR), Department of Clinical Dentistry, Faculty of Medicine, University of Bergen, Bergen, Norway
| | - Reinhard Gruber
- Austrian Cluster for Tissue Regeneration, Vienna, Austria
- Department of Oral Biology, University Clinic of Dentistry, Medical University of Vienna, Vienna, Austria
- Department of Periodontology, School of Dental Medicine, University of Bern, Bern, Switzerland
| | - Kamal Mustafa
- Center for Translational Oral Research (TOR), Department of Clinical Dentistry, Faculty of Medicine, University of Bergen, Bergen, Norway
| | - Mariano Sanz
- ETEP Research Group, Faculty of Odontology, University Complutense of Madrid, Madrid, Spain
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Humbert P, Kampleitner C, De Lima J, Brennan MÁ, Lodoso-Torrecilla I, Sadowska JM, Blanchard F, Canal C, Ginebra MP, Hoffmann O, Layrolle P. Phase composition of calcium phosphate materials affects bone formation by modulating osteoclastogenesis. Acta Biomater 2024; 176:417-431. [PMID: 38272200 DOI: 10.1016/j.actbio.2024.01.022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2023] [Revised: 01/12/2024] [Accepted: 01/17/2024] [Indexed: 01/27/2024]
Abstract
Human mesenchymal stromal cells (hMSCs) seeded on calcium phosphate (CaP) bioceramics are extensively explored in bone tissue engineering and have recently shown effective clinical outcomes. In previous pre-clinical studies, hMSCs-CaP-mediated bone formation was preceded by osteoclastogenesis at the implantation site. The current study evaluates to what extent phase composition of CaPs affects the osteoclast response and ultimately influence bone formation. To this end, four different CaP bioceramics were used, hydroxyapatite (HA), β-tricalcium phosphate (β-TCP) and two biphasic composites of HA/β-TCP ratios of 60/40 and 20/80 respectively, for in vitro osteoclast differentiation and correlation with in vivo osteoclastogenesis and bone formation. All ceramics allowed osteoclast formation in vitro from mouse and human precursors, except for pure HA, which significantly impaired their maturation. Ectopic implantation alongside hMSCs in subcutis sites of nude mice revealed new bone formation at 8 weeks in all conditions with relative amounts for β-TCP > biphasic CaPs > HA. Surprisingly, while hMSCs were essential for osteoinduction, their survival did not correlate with bone formation. By contrast, the degree of early osteoclastogenesis (2 weeks) seemed to define the extent of subsequent bone formation. Together, our findings suggest that the osteoclastic response could be used as a predictive marker in hMSC-CaP-based bone regeneration and strengthens the need to understand the underlying mechanisms for future biomaterial development. STATEMENT OF SIGNIFICANCE: The combination of mesenchymal stromal cells (MSCs) and calcium phosphate (CaP) materials has demonstrated its safety and efficacy for bone regeneration in clinical trials, despite our insufficient understanding of the underlying biological mechanisms. Osteoclasts were previously suggested as key mediators between the early inflammatory phase following biomaterial implantation and the subsequent bone formation. Here we compared the affinity of osteoclasts for various CaP materials with different ratios of hydroxyapatite to β-tricalcium phosphate. We found that osteoclast formation, both in vitro and at early stages in vivo, correlates with bone formation when the materials were implanted alongside MSCs in mice. Surprisingly, MSC survival did not correlate with bone formation, suggesting that the number or phenotype of osteoclasts formed was more important.
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Affiliation(s)
- Paul Humbert
- INSERM, UMR 1238, Phy-OS, Bone Sarcoma and Remodeling of Calcified Tissues, School of Medicine, University of Nantes, Nantes, France; INSERM, UMR 1229, RMeS, Regenerative Medicine and Skeleton, University of Nantes, Oniris, CHU Nantes, Nantes, France
| | - Carina Kampleitner
- Karl Donath Laboratory for Hard Tissue and Biomaterial Research, University Clinic of Dentistry, Medical University of Vienna, Vienna, Austria; Division of Pharmacology and Toxicology, Department of Pharmaceutical Sciences, University of Vienna, Vienna, Austria; Ludwig Boltzmann Institute for Traumatology, The Research Center in Cooperation With AUVA, Vienna, Austria; Austrian Cluster of Tissue Regeneration, Vienna, Austria
| | - Julien De Lima
- INSERM, UMR 1238, Phy-OS, Bone Sarcoma and Remodeling of Calcified Tissues, School of Medicine, University of Nantes, Nantes, France; INSERM, UMR 1229, RMeS, Regenerative Medicine and Skeleton, University of Nantes, Oniris, CHU Nantes, Nantes, France
| | - Meadhbh Á Brennan
- Regenerative Medicine Institute, School of Medicine and Biomedical Engineering, School of Engineering, University of Galway, Galway, Ireland
| | - Irene Lodoso-Torrecilla
- Biomaterials, Biomechanics and Tissue Engineering Group, Department of Materials Science and Engineering, Universitat Politècnica de Catalunya, Barcelona, Spain; Research Centre in Multiscale Science and Engineering, Universitat Politècnica de Catalunya, Barcelona, Spain
| | - Joanna Maria Sadowska
- Biomaterials, Biomechanics and Tissue Engineering Group, Department of Materials Science and Engineering, Universitat Politècnica de Catalunya, Barcelona, Spain; Research Centre in Multiscale Science and Engineering, Universitat Politècnica de Catalunya, Barcelona, Spain
| | - Frédéric Blanchard
- INSERM, UMR 1238, Phy-OS, Bone Sarcoma and Remodeling of Calcified Tissues, School of Medicine, University of Nantes, Nantes, France; INSERM, UMR 1229, RMeS, Regenerative Medicine and Skeleton, University of Nantes, Oniris, CHU Nantes, Nantes, France
| | - Cristina Canal
- Biomaterials, Biomechanics and Tissue Engineering Group, Department of Materials Science and Engineering, Universitat Politècnica de Catalunya, Barcelona, Spain; Research Centre in Multiscale Science and Engineering, Universitat Politècnica de Catalunya, Barcelona, Spain
| | - Maria-Pau Ginebra
- Biomaterials, Biomechanics and Tissue Engineering Group, Department of Materials Science and Engineering, Universitat Politècnica de Catalunya, Barcelona, Spain; Research Centre in Multiscale Science and Engineering, Universitat Politècnica de Catalunya, Barcelona, Spain; Institute of Bioengineering of Catalonia, Barcelona Institute of Science and Technology, Barcelona, Spain
| | - Oskar Hoffmann
- Division of Pharmacology and Toxicology, Department of Pharmaceutical Sciences, University of Vienna, Vienna, Austria
| | - Pierre Layrolle
- INSERM, UMR 1238, Phy-OS, Bone Sarcoma and Remodeling of Calcified Tissues, School of Medicine, University of Nantes, Nantes, France; INSERM, UMR 1214, ToNIC, CHU Purpan, Université Paul Sabatier, Toulouse, France.
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Al-Sharabi N, Mohamed-Ahmed S, Shanbhag S, Kampleitner C, Elnour R, Yamada S, Rana N, Birkeland E, Tangl S, Gruber R, Mustafa K. Osteogenic human MSC-derived extracellular vesicles regulate MSC activity and osteogenic differentiation and promote bone regeneration in a rat calvarial defect model. Stem Cell Res Ther 2024; 15:33. [PMID: 38321490 PMCID: PMC10848378 DOI: 10.1186/s13287-024-03639-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2023] [Accepted: 01/18/2024] [Indexed: 02/08/2024] Open
Abstract
BACKGROUND There is growing evidence that extracellular vesicles (EVs) play a crucial role in the paracrine mechanisms of transplanted human mesenchymal stem cells (hMSCs). Little is known, however, about the influence of microenvironmental stimuli on the osteogenic effects of EVs. This study aimed to investigate the properties and functions of EVs derived from undifferentiated hMSC (Naïve-EVs) and hMSC during the early stage of osteogenesis (Osteo-EVs). A further aim was to assess the osteoinductive potential of Osteo-EVs for bone regeneration in rat calvarial defects. METHODS EVs from both groups were isolated using size-exclusion chromatography and characterized by size distribution, morphology, flow cytometry analysis and proteome profiling. The effects of EVs (10 µg/ml) on the proliferation, migration, and osteogenic differentiation of cultured hMSC were evaluated. Osteo-EVs (50 µg) or serum-free medium (SFM, control) were combined with collagen membrane scaffold (MEM) to repair critical-sized calvarial bone defects in male Lewis rats and the efficacy was assessed using µCT, histology and histomorphometry. RESULTS Although Osteo- and Naïve-EVs have similar characteristics, proteomic analysis revealed an enrichment of bone-related proteins in Osteo-EVs. Both groups enhance cultured hMSC proliferation and migration, but Osteo-EVs demonstrate greater efficacy in promoting in vitro osteogenic differentiation, as evidenced by increased expression of osteogenesis-related genes, and higher calcium deposition. In rat calvarial defects, MEM with Osteo-EVs led to greater and more consistent bone regeneration than MEM loaded with SFM. CONCLUSIONS This study discloses differences in the protein profile and functional effects of EVs obtained from naïve hMSC and hMSC during the early stage of osteogenesis, using different methods. The significant protein profile and cellular function of EVs derived from hMSC during the early stage of osteogenesis were further verified by a calvarial bone defect model, emphasizing the importance of using differentiated MSC to produce EVs for bone therapeutics.
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Affiliation(s)
- Niyaz Al-Sharabi
- Department of Clinical Dentistry, Faculty of Medicine, Center for Translational Oral Research (TOR), University of Bergen, 5009, Bergen, Norway.
| | - Samih Mohamed-Ahmed
- Department of Clinical Dentistry, Faculty of Medicine, Center for Translational Oral Research (TOR), University of Bergen, 5009, Bergen, Norway
| | - Siddharth Shanbhag
- Department of Clinical Dentistry, Faculty of Medicine, Center for Translational Oral Research (TOR), University of Bergen, 5009, Bergen, Norway
- Department of Immunology and Transfusion Medicine, Haukeland University Hospital, 5021, Bergen, Norway
| | - Carina Kampleitner
- Karl Donath Laboratory for Hard Tissue and Biomaterial Research, University Clinic of Dentistry, Medical University of Vienna, 1090, Vienna, Austria
- Ludwig Boltzmann Institute for Traumatology, The Research Center in Cooperation with AUVA, 1200, Vienna, Austria
- Austrian Cluster for Tissue Regeneration, 1200, Vienna, Austria
| | - Rammah Elnour
- Department of Clinical Medicine, Faculty of Medicine, University of Bergen, 5009, Bergen, Norway
| | - Shuntaro Yamada
- Department of Clinical Dentistry, Faculty of Medicine, Center for Translational Oral Research (TOR), University of Bergen, 5009, Bergen, Norway
| | - Neha Rana
- Department of Clinical Dentistry, Faculty of Medicine, Center for Translational Oral Research (TOR), University of Bergen, 5009, Bergen, Norway
| | - Even Birkeland
- The Proteomics Facility of the University of Bergen (PROBE), University of Bergen, 5021, Bergen, Norway
| | - Stefan Tangl
- Karl Donath Laboratory for Hard Tissue and Biomaterial Research, University Clinic of Dentistry, Medical University of Vienna, 1090, Vienna, Austria
- Austrian Cluster for Tissue Regeneration, 1200, Vienna, Austria
| | - Reinhard Gruber
- Austrian Cluster for Tissue Regeneration, 1200, Vienna, Austria
- Department of Oral Biology, University Clinic of Dentistry, Medical University of Vienna, 1090, Vienna, Austria
- Department of Periodontology, School of Dental Medicine, University of Bern, 3010, Bern, Switzerland
| | - Kamal Mustafa
- Department of Clinical Dentistry, Faculty of Medicine, Center for Translational Oral Research (TOR), University of Bergen, 5009, Bergen, Norway
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Shanbhag S, Al-Sharabi N, Kampleitner C, Mohamed-Ahmed S, Kristoffersen EK, Tangl S, Mustafa K, Gruber R, Sanz M. The use of mesenchymal stromal cell secretome to enhance guided bone regeneration in comparison with leukocyte and platelet-rich fibrin. Clin Oral Implants Res 2024; 35:141-154. [PMID: 37964421 DOI: 10.1111/clr.14205] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2023] [Revised: 09/25/2023] [Accepted: 11/01/2023] [Indexed: 11/16/2023]
Abstract
OBJECTIVES Secretomes of mesenchymal stromal cells (MSC) represent a novel strategy for growth-factor delivery for tissue regeneration. The objective of this study was to compare the efficacy of adjunctive use of conditioned media of bone-marrow MSC (MSC-CM) with collagen barrier membranes vs. adjunctive use of conditioned media of leukocyte- and platelet-rich fibrin (PRF-CM), a current growth-factor therapy, for guided bone regeneration (GBR). METHODS MSC-CM and PRF-CM prepared from healthy human donors were subjected to proteomic analysis using mass spectrometry and multiplex immunoassay. Collagen membranes functionalized with MSC-CM or PRF-CM were applied on critical-size rat calvaria defects and new bone formation was assessed via three-dimensional (3D) micro-CT analysis of total defect volume (2 and 4 weeks) and 2D histomorphometric analysis of central defect regions (4 weeks). RESULTS While both MSC-CM and PRF-CM revealed several bone-related proteins, differentially expressed proteins, especially extracellular matrix components, were increased in MSC-CM. In rat calvaria defects, micro-CT revealed greater total bone coverage in the MSC-CM group after 2 and 4 weeks. Histologically, both groups showed a combination of regular new bone and 'hybrid' new bone, which was formed within the membrane compartment and characterized by incorporation of mineralized collagen fibers. Histomorphometry in central defect sections revealed greater hybrid bone area in the MSC-CM group, while the total new bone area was similar between groups. CONCLUSION Based on the in vitro and in vivo investigations herein, functionalization of membranes with MSC-CM represents a promising strategy to enhance GBR.
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Affiliation(s)
- Siddharth Shanbhag
- Department of Immunology and Transfusion Medicine, Haukeland University Hospital, Bergen, Norway
- Center for Translational Oral Research (TOR), Department of Clinical Dentistry, Faculty of Medicine, University of Bergen, Bergen, Norway
| | - Niyaz Al-Sharabi
- Center for Translational Oral Research (TOR), Department of Clinical Dentistry, Faculty of Medicine, University of Bergen, Bergen, Norway
| | - Carina Kampleitner
- Karl Donath Laboratory for Hard Tissue and Biomaterial Research, Division of Oral Surgery, University Clinic of Dentistry, Medical University of Vienna, Vienna, Austria
- Ludwig Boltzmann Institute for Experimental and Clinical Traumatology, The Research Center in Cooperation with AUVA, Vienna, Austria
- Austrian Cluster for Tissue Regeneration, Vienna, Austria
| | - Samih Mohamed-Ahmed
- Center for Translational Oral Research (TOR), Department of Clinical Dentistry, Faculty of Medicine, University of Bergen, Bergen, Norway
| | - Einar K Kristoffersen
- Department of Immunology and Transfusion Medicine, Haukeland University Hospital, Bergen, Norway
| | - Stefan Tangl
- Karl Donath Laboratory for Hard Tissue and Biomaterial Research, Division of Oral Surgery, University Clinic of Dentistry, Medical University of Vienna, Vienna, Austria
- Austrian Cluster for Tissue Regeneration, Vienna, Austria
| | - Kamal Mustafa
- Center for Translational Oral Research (TOR), Department of Clinical Dentistry, Faculty of Medicine, University of Bergen, Bergen, Norway
| | - Reinhard Gruber
- Austrian Cluster for Tissue Regeneration, Vienna, Austria
- Department of Oral Biology, University Clinic of Dentistry, Medical University of Vienna, Vienna, Austria
- Department of Periodontology, School of Dental Medicine, University of Bern, Bern, Switzerland
| | - Mariano Sanz
- ETEP Research Group, Faculty of Odontology, University Complutense of Madrid, Madrid, Spain
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Feher B, Kampleitner C, Heimel P, Tangl S, Helms JA, Kuchler U, Gruber R. The effect of osteocyte-derived RANKL on bone graft remodeling: An in vivo experimental study. Clin Oral Implants Res 2023; 34:1417-1427. [PMID: 37792417 DOI: 10.1111/clr.14187] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2023] [Revised: 09/11/2023] [Accepted: 09/17/2023] [Indexed: 10/05/2023]
Abstract
OBJECTIVES Autologous bone is considered the gold standard for grafting, yet it suffers from a tendency to undergo resorption over time. While the exact mechanisms of this resorption remain elusive, osteocytes have been shown to play an important role in stimulating osteoclastic activity through their expression of receptor activator of NF-κB (RANK) ligand (RANKL). The aim of this study was to assess the function of osteocyte-derived RANKL in bone graft remodeling. MATERIALS AND METHODS In Tnfsf11fl/fl ;Dmp1-Cre mice without osteocyte-specific RANKL as well as in Dmp1-Cre control mice, 2.6 mm calvarial bone disks were harvested and transplanted into mice with matching genetic backgrounds either subcutaneously or subperiosteally, creating 4 groups in total. Histology and micro-computed tomography of the grafts and the donor regions were performed 28 days after grafting. RESULTS Histology revealed marked resorption of subcutaneous control Dmp1-Cre grafts and new bone formation around subperiosteal Dmp1-Cre grafts. In contrast, Tnfsf11fl/fl ;Dmp1-Cre grafts showed effectively neither signs of bone resorption nor formation. Quantitative micro-computed tomography revealed a significant difference in residual graft area between subcutaneous and subperiosteal Dmp1-Cre grafts (p < .01). This difference was not observed between subcutaneous and subperiosteal Tnfsf11fl/fl ;Dmp1-Cre grafts (p = .17). Residual graft volume (p = .08) and thickness (p = .13) did not differ significantly among the groups. Donor area regeneration was comparable between Tnfsf11fl/fl ;Dmp1-Cre and Dmp1-Cre mice and restricted to the defect margins. CONCLUSIONS The results suggest an active function of osteocyte-derived RANKL in bone graft remodeling.
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Affiliation(s)
- Balazs Feher
- Department of Oral Biology, University Clinic of Dentistry, Medical University of Vienna, Vienna, Austria
- Department of Oral Surgery, University Clinic of Dentistry, Medical University of Vienna, Vienna, Austria
- Department of Oral Medicine, Infection, and Immunity, Harvard School of Dental Medicine, Boston, Massachusetts, USA
| | - Carina Kampleitner
- Karl Donath Laboratory for Hard Tissue and Biomaterial Research, University Clinic of Dentistry, Medical University of Vienna, Vienna, Austria
- Austrian Cluster for Tissue Regeneration, Vienna, Austria
- Ludwig Boltzmann Institute for Traumatology, The Research Center in Cooperation with AUVA, Vienna, Austria
| | - Patrick Heimel
- Karl Donath Laboratory for Hard Tissue and Biomaterial Research, University Clinic of Dentistry, Medical University of Vienna, Vienna, Austria
- Austrian Cluster for Tissue Regeneration, Vienna, Austria
- Ludwig Boltzmann Institute for Traumatology, The Research Center in Cooperation with AUVA, Vienna, Austria
| | - Stefan Tangl
- Karl Donath Laboratory for Hard Tissue and Biomaterial Research, University Clinic of Dentistry, Medical University of Vienna, Vienna, Austria
- Austrian Cluster for Tissue Regeneration, Vienna, Austria
| | - Jill A Helms
- Department of Surgery, School of Medicine, Stanford University, Palo Alto, California, USA
| | - Ulrike Kuchler
- Department of Oral Surgery, University Clinic of Dentistry, Medical University of Vienna, Vienna, Austria
| | - Reinhard Gruber
- Department of Oral Biology, University Clinic of Dentistry, Medical University of Vienna, Vienna, Austria
- Austrian Cluster for Tissue Regeneration, Vienna, Austria
- Department of Periodontology, School of Dental Medicine, University of Bern, Bern, Switzerland
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Shanbhag S, Kampleitner C, Al-Sharabi N, Mohamed-Ahmed S, Apaza Alccayhuaman KA, Heimel P, Tangl S, Beinlich A, Rana N, Sanz M, Kristoffersen EK, Mustafa K, Gruber R. Functionalizing Collagen Membranes with MSC-Conditioned Media Promotes Guided Bone Regeneration in Rat Calvarial Defects. Cells 2023; 12:cells12050767. [PMID: 36899904 PMCID: PMC10001262 DOI: 10.3390/cells12050767] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2023] [Revised: 02/21/2023] [Accepted: 02/24/2023] [Indexed: 03/04/2023] Open
Abstract
Functionalizing biomaterials with conditioned media (CM) from mesenchymal stromal cells (MSC) is a promising strategy for enhancing the outcomes of guided bone regeneration (GBR). This study aimed to evaluate the bone regenerative potential of collagen membranes (MEM) functionalized with CM from human bone marrow MSC (MEM-CM) in critical size rat calvarial defects. MEM-CM prepared via soaking (CM-SOAK) or soaking followed by lyophilization (CM-LYO) were applied to critical size rat calvarial defects. Control treatments included native MEM, MEM with rat MSC (CEL) and no treatment. New bone formation was analyzed via micro-CT (2 and 4 weeks) and histology (4 weeks). Greater radiographic new bone formation occurred at 2 weeks in the CM-LYO group vs. all other groups. After 4 weeks, only the CM-LYO group was superior to the untreated control group, whereas the CM-SOAK, CEL and native MEM groups were similar. Histologically, the regenerated tissues showed a combination of regular new bone and hybrid new bone, which formed within the membrane compartment and was characterized by the incorporation of mineralized MEM fibers. Areas of new bone formation and MEM mineralization were greatest in the CM-LYO group. Proteomic analysis of lyophilized CM revealed the enrichment of several proteins and biological processes related to bone formation. In summary, lyophilized MEM-CM enhanced new bone formation in rat calvarial defects, thus representing a novel 'off-the-shelf' strategy for GBR.
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Affiliation(s)
- Siddharth Shanbhag
- Department of Immunology and Transfusion Medicine, Haukeland University Hospital, 5021 Bergen, Norway
- Center for Translational Oral Research (TOR), Department of Clinical Dentistry, Faculty of Medicine, University of Bergen, 5009 Bergen, Norway
- Correspondence: (S.S.); (R.G.); Tel.: +47-55586059 (S.S.); +43-(0)69910718472 (R.G.)
| | - Carina Kampleitner
- Karl Donath Laboratory for Hard Tissue and Biomaterial Research, University Clinic of Dentistry, Medical University of Vienna, 1090 Vienna, Austria
- Ludwig Boltzmann Institute for Traumatology, The Research Center in Cooperation with AUVA, 1200 Vienna, Austria
- Austrian Cluster for Tissue Regeneration, 1200 Vienna, Austria
| | - Niyaz Al-Sharabi
- Center for Translational Oral Research (TOR), Department of Clinical Dentistry, Faculty of Medicine, University of Bergen, 5009 Bergen, Norway
| | - Samih Mohamed-Ahmed
- Center for Translational Oral Research (TOR), Department of Clinical Dentistry, Faculty of Medicine, University of Bergen, 5009 Bergen, Norway
| | | | - Patrick Heimel
- Karl Donath Laboratory for Hard Tissue and Biomaterial Research, University Clinic of Dentistry, Medical University of Vienna, 1090 Vienna, Austria
- Ludwig Boltzmann Institute for Traumatology, The Research Center in Cooperation with AUVA, 1200 Vienna, Austria
- Austrian Cluster for Tissue Regeneration, 1200 Vienna, Austria
| | - Stefan Tangl
- Karl Donath Laboratory for Hard Tissue and Biomaterial Research, University Clinic of Dentistry, Medical University of Vienna, 1090 Vienna, Austria
- Austrian Cluster for Tissue Regeneration, 1200 Vienna, Austria
| | - Andreas Beinlich
- Department of Earth Science, Faculty of Mathematics and Natural Sciences, University of Bergen, 5009 Bergen, Norway
| | - Neha Rana
- Center for Translational Oral Research (TOR), Department of Clinical Dentistry, Faculty of Medicine, University of Bergen, 5009 Bergen, Norway
| | - Mariano Sanz
- ETEP Research Group, Faculty of Odontology, University Complutense of Madrid, 28040 Madrid, Spain
| | - Einar K. Kristoffersen
- Department of Immunology and Transfusion Medicine, Haukeland University Hospital, 5021 Bergen, Norway
| | - Kamal Mustafa
- Center for Translational Oral Research (TOR), Department of Clinical Dentistry, Faculty of Medicine, University of Bergen, 5009 Bergen, Norway
| | - Reinhard Gruber
- Austrian Cluster for Tissue Regeneration, 1200 Vienna, Austria
- Department of Oral Biology, University Clinic of Dentistry, Medical University of Vienna, 1090 Vienna, Austria
- Department of Periodontology, School of Dental Medicine, University of Bern, 3010 Bern, Switzerland
- Correspondence: (S.S.); (R.G.); Tel.: +47-55586059 (S.S.); +43-(0)69910718472 (R.G.)
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Michels R, Kampleitner C, Dobsak T, Doppelmayer K, Heimel P, Lettner S, Tangl S, Gruber R, Benfatti CAM. Impact of a Static Magnetic Field on Early Osseointegration: A Pilot Study in Canines. Materials (Basel) 2023; 16:1846. [PMID: 36902964 PMCID: PMC10003792 DOI: 10.3390/ma16051846] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/30/2022] [Revised: 02/17/2023] [Accepted: 02/17/2023] [Indexed: 06/18/2023]
Abstract
A static magnetic field generated by neodymium-iron-boron (NdFeB) magnets placed in the inner cavity of dental implants can enhance bone regeneration in rabbits. It is, however, unknown whether static magnetic fields support osseointegration in a canine model. We therefore determined the potential osteogenic effect of implants carrying NdFeB magnets inserted in the tibia of six adult canines in the early stages of osseointegration. Here, we report that after 15 days of healing, magnetic and regular implants showed a high variation with a median new bone-to-implant contact (nBIC) in the cortical (41.3% and 7.3%) and the medullary (28.6% and 44.8%) region, respectively. Consistently, the median new bone volume/tissue volume (nBV/TV) in the cortical (14.9% and 5.4%) and the medullary (22.2% and 22.4%) region were not significantly different. One week of healing only resulted in negligible bone formation. These findings suggest that considering the large variation and the pilot nature of this study, magnetic implants failed to support peri-implant bone formation in a canine model.
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Affiliation(s)
- Roberta Michels
- Center for Research on Dental Implants (CEPID), School of Dentistry (ODT), Universidade Federal de Santa Catarina (UFSC), Florianópolis 88036-020, Brazil
- Robert K. Schenk Laboratory of Oral Histology, Department of Periodontology, School of Dental Medicine, University of Bern, 3010 Bern, Switzerland
- Karl Donath Laboratory for Hard Tissue and Biomaterial Research, University Clinic of Dentistry, Medical University of Vienna, 1090 Vienna, Austria
| | - Carina Kampleitner
- Karl Donath Laboratory for Hard Tissue and Biomaterial Research, University Clinic of Dentistry, Medical University of Vienna, 1090 Vienna, Austria
- Ludwig Boltzmann Institute for Traumatology, The Research Center in Cooperation with AUVA, 1200 Vienna, Austria
- Austrian Cluster for Tissue Regeneration, 1200 Vienna, Austria
| | - Toni Dobsak
- Karl Donath Laboratory for Hard Tissue and Biomaterial Research, University Clinic of Dentistry, Medical University of Vienna, 1090 Vienna, Austria
- Austrian Cluster for Tissue Regeneration, 1200 Vienna, Austria
| | - Kevin Doppelmayer
- Karl Donath Laboratory for Hard Tissue and Biomaterial Research, University Clinic of Dentistry, Medical University of Vienna, 1090 Vienna, Austria
- Austrian Cluster for Tissue Regeneration, 1200 Vienna, Austria
| | - Patrick Heimel
- Karl Donath Laboratory for Hard Tissue and Biomaterial Research, University Clinic of Dentistry, Medical University of Vienna, 1090 Vienna, Austria
- Ludwig Boltzmann Institute for Traumatology, The Research Center in Cooperation with AUVA, 1200 Vienna, Austria
- Austrian Cluster for Tissue Regeneration, 1200 Vienna, Austria
| | - Stefan Lettner
- Karl Donath Laboratory for Hard Tissue and Biomaterial Research, University Clinic of Dentistry, Medical University of Vienna, 1090 Vienna, Austria
- Austrian Cluster for Tissue Regeneration, 1200 Vienna, Austria
| | - Stefan Tangl
- Karl Donath Laboratory for Hard Tissue and Biomaterial Research, University Clinic of Dentistry, Medical University of Vienna, 1090 Vienna, Austria
- Austrian Cluster for Tissue Regeneration, 1200 Vienna, Austria
| | - Reinhard Gruber
- Austrian Cluster for Tissue Regeneration, 1200 Vienna, Austria
- Department of Oral Biology, Medical University of Vienna, 1090 Vienna, Austria
| | - César Augusto Magalhães Benfatti
- Center for Research on Dental Implants (CEPID), School of Dentistry (ODT), Universidade Federal de Santa Catarina (UFSC), Florianópolis 88036-020, Brazil
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8
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Shanbhag S, Kampleitner C, Mohamed-Ahmed S, Yassin MA, Dongre H, Costea DE, Tangl S, Hassan MN, Stavropoulos A, Bolstad AI, Suliman S, Mustafa K. Corrigendum: Ectopic Bone Tissue Engineering in Mice Using Human Gingiva or Bone Marrow-Derived Stromal/Progenitor Cells in Scaffold-Hydrogel Constructs. Front Bioeng Biotechnol 2022; 9:831669. [PMID: 35059391 PMCID: PMC8764244 DOI: 10.3389/fbioe.2021.831669] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2021] [Accepted: 12/15/2021] [Indexed: 11/24/2022] Open
Affiliation(s)
- Siddharth Shanbhag
- Center for Translational Oral Research (TOR), Department of Clinical Dentistry, Faculty of Medicine, University of Bergen, Bergen, Norway.,Department of Immunology and Transfusion Medicine, Haukeland University Hospital, Bergen, Norway
| | - Carina Kampleitner
- Ludwig Boltzmann Institute for Traumatology, The Research Center in Cooperation with AUVA, Vienna, Austria.,Karl Donath Laboratory for Hard Tissue and Biomaterial Research, University Clinic of Dentistry, Medical University of Vienna, Vienna, Austria.,Austrian Cluster for Tissue Regeneration, Vienna, Austria
| | - Samih Mohamed-Ahmed
- Center for Translational Oral Research (TOR), Department of Clinical Dentistry, Faculty of Medicine, University of Bergen, Bergen, Norway
| | - Mohammed Ahmad Yassin
- Center for Translational Oral Research (TOR), Department of Clinical Dentistry, Faculty of Medicine, University of Bergen, Bergen, Norway
| | - Harsh Dongre
- Gade Laboratory for Pathology, Department of Clinical Medicine, Faculty of Medicine, University of Bergen, Bergen, Norway.,Centre for Cancer Biomarkers (CCBIO), Faculty of Medicine, University of Bergen, Bergen, Norway
| | - Daniela Elena Costea
- Gade Laboratory for Pathology, Department of Clinical Medicine, Faculty of Medicine, University of Bergen, Bergen, Norway.,Centre for Cancer Biomarkers (CCBIO), Faculty of Medicine, University of Bergen, Bergen, Norway
| | - Stefan Tangl
- Karl Donath Laboratory for Hard Tissue and Biomaterial Research, University Clinic of Dentistry, Medical University of Vienna, Vienna, Austria.,Austrian Cluster for Tissue Regeneration, Vienna, Austria
| | - Mohamad Nageeb Hassan
- Center for Translational Oral Research (TOR), Department of Clinical Dentistry, Faculty of Medicine, University of Bergen, Bergen, Norway
| | - Andreas Stavropoulos
- Department of Periodontology, Faculty of Odontology, Malmö University, Malmö, Sweden.,Division of Regenerative Medicine and Periodontology, University Clinics of Dental Medicine, University of Geneva, Geneva, Switzerland
| | - Anne Isine Bolstad
- Center for Translational Oral Research (TOR), Department of Clinical Dentistry, Faculty of Medicine, University of Bergen, Bergen, Norway
| | - Salwa Suliman
- Center for Translational Oral Research (TOR), Department of Clinical Dentistry, Faculty of Medicine, University of Bergen, Bergen, Norway
| | - Kamal Mustafa
- Center for Translational Oral Research (TOR), Department of Clinical Dentistry, Faculty of Medicine, University of Bergen, Bergen, Norway
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9
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Shanbhag S, Kampleitner C, Mohamed-Ahmed S, Yassin MA, Dongre H, Costea DE, Tangl S, Hassan MN, Stavropoulos A, Bolstad AI, Suliman S, Mustafa K. Ectopic Bone Tissue Engineering in Mice Using Human Gingiva or Bone Marrow-Derived Stromal/Progenitor Cells in Scaffold-Hydrogel Constructs. Front Bioeng Biotechnol 2021; 9:783468. [PMID: 34917602 PMCID: PMC8670384 DOI: 10.3389/fbioe.2021.783468] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2021] [Accepted: 11/16/2021] [Indexed: 01/22/2023] Open
Abstract
Three-dimensional (3D) spheroid culture can promote the osteogenic differentiation and bone regeneration capacity of mesenchymal stromal cells (MSC). Gingiva-derived progenitor cells (GPC) represent a less invasive alternative to bone marrow MSC (BMSC) for clinical applications. The aim of this study was to test the in vivo bone forming potential of human GPC and BMSC cultured as 3D spheroids or dissociated cells (2D). 2D and 3D cells encapsulated in constructs of human platelet lysate hydrogels (HPLG) and 3D-printed poly (L-lactide-co-trimethylene carbonate) scaffolds (HPLG-PLATMC) were implanted subcutaneously in nude mice; cell-free HPLG-PLATMC constructs served as a control. Mineralization was assessed using micro-computed tomography (µCT), histology, scanning electron microscopy (SEM) and in situ hybridization (ISH). After 4–8 weeks, µCT revealed greater mineralization in 3D-BMSC vs. 2D-BMSC and 3D-GPC (p < 0.05), and a similar trend in 2D-GPC vs. 2D-BMSC (p > 0.05). After 8 weeks, greater mineralization was observed in cell-free constructs vs. all 2D- and 3D-cell groups (p < 0.05). Histology and SEM revealed an irregular but similar mineralization pattern in all groups. ISH revealed similar numbers of 2D and 3D BMSC/GPC within and/or surrounding the mineralized areas. In summary, spheroid culture promoted ectopic mineralization in constructs of BMSC, while constructs of dissociated GPC and BMSC performed similarly. The combination of HPLG and PLATMC represents a promising scaffold for bone tissue engineering applications.
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Affiliation(s)
- Siddharth Shanbhag
- Center for Translational Oral Research (TOR), Department of Clinical Dentistry, Faculty of Medicine, University of Bergen, Bergen, Norway
- Department of Immunology and Transfusion Medicine, Haukeland University Hospital, Bergen, Norway
- *Correspondence: Siddharth Shanbhag, ; Kamal Mustafa,
| | - Carina Kampleitner
- Ludwig Boltzmann Institute for Traumatology, The Research Center in Cooperation With AUVA, Vienna, Austria
- Karl Donath Laboratory for Hard Tissue and Biomaterial Research, University Clinic of Dentistry, Medical University of Vienna, Vienna, Austria
- Austrian Cluster for Tissue Regeneration, Vienna, Austria
| | - Samih Mohamed-Ahmed
- Center for Translational Oral Research (TOR), Department of Clinical Dentistry, Faculty of Medicine, University of Bergen, Bergen, Norway
| | - Mohammed Ahmad Yassin
- Center for Translational Oral Research (TOR), Department of Clinical Dentistry, Faculty of Medicine, University of Bergen, Bergen, Norway
| | - Harsh Dongre
- Gade Laboratory for Pathology, Department of Clinical Medicine, Faculty of Medicine, University of Bergen, Bergen, Norway
- Centre for Cancer Biomarkers (CCBIO), Faculty of Medicine, University of Bergen, Bergen, Norway
| | - Daniela Elena Costea
- Gade Laboratory for Pathology, Department of Clinical Medicine, Faculty of Medicine, University of Bergen, Bergen, Norway
- Centre for Cancer Biomarkers (CCBIO), Faculty of Medicine, University of Bergen, Bergen, Norway
| | - Stefan Tangl
- Karl Donath Laboratory for Hard Tissue and Biomaterial Research, University Clinic of Dentistry, Medical University of Vienna, Vienna, Austria
- Austrian Cluster for Tissue Regeneration, Vienna, Austria
| | - Mohamad Nageeb Hassan
- Center for Translational Oral Research (TOR), Department of Clinical Dentistry, Faculty of Medicine, University of Bergen, Bergen, Norway
| | - Andreas Stavropoulos
- Department of Periodontology, Faculty of Odontology, Malmö University, Malmö, Sweden
- Division of Conservative Dentistry and Periodontology, University Clinic of Dentistry, Medical University of Vienna, Vienna, Austria
| | - Anne Isine Bolstad
- Center for Translational Oral Research (TOR), Department of Clinical Dentistry, Faculty of Medicine, University of Bergen, Bergen, Norway
| | - Salwa Suliman
- Center for Translational Oral Research (TOR), Department of Clinical Dentistry, Faculty of Medicine, University of Bergen, Bergen, Norway
| | - Kamal Mustafa
- Center for Translational Oral Research (TOR), Department of Clinical Dentistry, Faculty of Medicine, University of Bergen, Bergen, Norway
- *Correspondence: Siddharth Shanbhag, ; Kamal Mustafa,
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10
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Shanbhag S, Suliman S, Mohamed-Ahmed S, Kampleitner C, Hassan MN, Heimel P, Dobsak T, Tangl S, Bolstad AI, Mustafa K. Bone regeneration in rat calvarial defects using dissociated or spheroid mesenchymal stromal cells in scaffold-hydrogel constructs. Stem Cell Res Ther 2021; 12:575. [PMID: 34776000 PMCID: PMC8591809 DOI: 10.1186/s13287-021-02642-w] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2021] [Accepted: 10/22/2021] [Indexed: 12/20/2022] Open
Abstract
Background Three-dimensional (3D) spheroid culture can promote the osteogenic differentiation of bone marrow mesenchymal stromal cells (BMSC). 3D printing offers the possibility to produce customized scaffolds for complex bone defects. The aim of this study was to compare the potential of human BMSC cultured as 2D monolayers or 3D spheroids encapsulated in constructs of 3D-printed poly-L-lactide-co-trimethylene carbonate scaffolds and modified human platelet lysate hydrogels (PLATMC-HPLG) for bone regeneration. Methods PLATMC-HPLG constructs with 2D or 3D BMSC were assessed for osteogenic differentiation based on gene expression and in vitro mineralization. Subsequently, PLATMC-HPLG constructs with 2D or 3D BMSC were implanted in rat calvarial defects for 12 weeks; cell-free constructs served as controls. Bone regeneration was assessed via in vivo computed tomography (CT), ex vivo micro-CT and histology. Results Osteogenic gene expression was significantly enhanced in 3D versus 2D BMSC prior to, but not after, encapsulation in PLATMC-HPLG constructs. A trend for greater in vitro mineralization was observed in constructs with 3D versus 2D BMSC (p > 0.05). In vivo CT revealed comparable bone formation after 4, 8 and 12 weeks in all groups. After 12 weeks, micro-CT revealed substantial regeneration in 2D BMSC (62.47 ± 19.46%), 3D BMSC (51.01 ± 24.43%) and cell-free PLATMC-HPLG constructs (43.20 ± 30.09%) (p > 0.05). A similar trend was observed in the histological analysis. Conclusion Despite a trend for superior in vitro mineralization, constructs with 3D and 2D BMSC performed similarly in vivo. Regardless of monolayer or spheroid cell culture, PLATMC-HPLG constructs represent promising scaffolds for bone tissue engineering applications. Supplementary Information The online version contains supplementary material available at 10.1186/s13287-021-02642-w.
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Affiliation(s)
- Siddharth Shanbhag
- Center for Translational Oral Research (TOR), Department of Clinical Dentistry, Faculty of Medicine, University of Bergen, Årstadveien 19, 5009, Bergen, Norway. .,Department of Immunology and Transfusion Medicine, Haukeland University Hospital, Bergen, Norway.
| | - Salwa Suliman
- Center for Translational Oral Research (TOR), Department of Clinical Dentistry, Faculty of Medicine, University of Bergen, Årstadveien 19, 5009, Bergen, Norway
| | - Samih Mohamed-Ahmed
- Center for Translational Oral Research (TOR), Department of Clinical Dentistry, Faculty of Medicine, University of Bergen, Årstadveien 19, 5009, Bergen, Norway
| | - Carina Kampleitner
- Core Facility Hard Tissue and Biomaterial Research/Karl Donath Laboratory, University Clinic of Dentistry, Medical University of Vienna, Vienna, Austria.,Ludwig Boltzmann Institute for Traumatology, The research center in cooperation with AUVA, Vienna, Austria.,Austrian Cluster for Tissue Regeneration, Vienna, Austria
| | - Mohamed Nageeb Hassan
- Center for Translational Oral Research (TOR), Department of Clinical Dentistry, Faculty of Medicine, University of Bergen, Årstadveien 19, 5009, Bergen, Norway
| | - Patrick Heimel
- Core Facility Hard Tissue and Biomaterial Research/Karl Donath Laboratory, University Clinic of Dentistry, Medical University of Vienna, Vienna, Austria.,Ludwig Boltzmann Institute for Traumatology, The research center in cooperation with AUVA, Vienna, Austria.,Austrian Cluster for Tissue Regeneration, Vienna, Austria
| | - Toni Dobsak
- Core Facility Hard Tissue and Biomaterial Research/Karl Donath Laboratory, University Clinic of Dentistry, Medical University of Vienna, Vienna, Austria.,Austrian Cluster for Tissue Regeneration, Vienna, Austria
| | - Stefan Tangl
- Core Facility Hard Tissue and Biomaterial Research/Karl Donath Laboratory, University Clinic of Dentistry, Medical University of Vienna, Vienna, Austria.,Austrian Cluster for Tissue Regeneration, Vienna, Austria
| | - Anne Isine Bolstad
- Center for Translational Oral Research (TOR), Department of Clinical Dentistry, Faculty of Medicine, University of Bergen, Årstadveien 19, 5009, Bergen, Norway
| | - Kamal Mustafa
- Center for Translational Oral Research (TOR), Department of Clinical Dentistry, Faculty of Medicine, University of Bergen, Årstadveien 19, 5009, Bergen, Norway.
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11
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Talebian R, Kampleitner C, Sagl B, Kuchler U, Dehpour AR, Gruber R. Bone healing around titanium implants in a preclinical model of bile duct ligation-induced liver injury. Clin Oral Implants Res 2021; 32:980-988. [PMID: 34114694 PMCID: PMC8453542 DOI: 10.1111/clr.13792] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2021] [Revised: 04/12/2021] [Accepted: 05/20/2021] [Indexed: 12/27/2022]
Abstract
Objectives Chronic liver disease increases the risk for periodontal disease and osteoporotic fractures, but its impacts on bone regeneration remain unknown. Herein, we studied the impact of liver cirrhosis on peri‐implant bone formation. Material and Methods A total of 20 male Wistar rats were randomly divided into two groups: one with the common bile duct ligated (BDL) and the respective sham‐treated control group (SHAM). After four weeks of disease induction, titanium mini‐screws were inserted into the tibia. Successful induction of liver cirrhosis was confirmed by the presence of clinical symptoms. Another four weeks later, peri‐implant bone volume per tissue volume (BV/TV) and bone‐to‐implant contact (BIC) were determined by histomorphometric analysis. Results Peri‐implant bone formation was not significantly different between the SHAM and BDL groups. In the cortical compartment, the median percentage of peri‐implant new bone was 10.1% (95% CI of mean 4.0–35.7) and 22.5% (13.8–30.6) in the SHAM and BDL groups, respectively (p = .26). Consistently, the new bone in direct contact with the implant was 18.1% (0.4–37.8) and 23.3% (9.2–32.8) in SHAM and BDL groups, respectively (p = .38). When measuring the medullary compartment, the new bone area was 7.1% (4.8–10.4) and 10.4% (7.2–13.5) in the SHAM and BDL groups, respectively (p = .17). Medullary new bone in direct contact with the implant was 10.0% (1.2–50.4) and 20.6% (16.8–35.3) in SHAM and BDL groups, respectively, and thus comparable between the two groups (p = .46). Conclusions Bile duct ligation has no significant impact on the early stages of peri‐implant bone formation.
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Affiliation(s)
- Reza Talebian
- Department of Oral Biology, University Clinic of Dentistry, Medical University of Vienna, Vienna, Austria.,Experimental Medicine Research Center, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Carina Kampleitner
- Karl Donath Laboratory for Hard Tissue and Biomaterial Research, University Clinic of Dentistry, Medical University of Vienna, Vienna, Austria.,Ludwig Boltzmann Institute for Experimental and Clinical Traumatology, AUVA Research Center, Vienna, Austria.,Austrian Cluster for Tissue Regeneration, Vienna, Austria
| | - Benedikt Sagl
- Department of Prosthodontics, University Clinic of Dentistry, Medical University of Vienna, Vienna, Austria
| | - Ulrike Kuchler
- Department of Oral Surgery, University Clinic of Dentistry, Medical University of Vienna, Vienna, Austria
| | - Ahmad Reza Dehpour
- Experimental Medicine Research Center, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran.,Department of Pharmacology, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Reinhard Gruber
- Department of Oral Biology, University Clinic of Dentistry, Medical University of Vienna, Vienna, Austria.,Austrian Cluster for Tissue Regeneration, Vienna, Austria.,Department of Periodontology, School of Dental Medicine, University of Bern, Bern, Switzerland
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12
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Kampleitner C, Changi K, Felfel RM, Scotchford CA, Sottile V, Kluger R, Hoffmann O, Grant DM, Epstein MM. Preclinical biological and physicochemical evaluation of two-photon engineered 3D biomimetic copolymer scaffolds for bone healing. Biomater Sci 2020; 8:1683-1694. [PMID: 31984995 DOI: 10.1039/c9bm01827a] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A major challenge in orthopedics is the repair of large non-union bone fractures. A promising therapy for this indication is the use of biodegradable bioinspired biomaterials that stabilize the fracture site, relieve pain and initiate bone formation and healing. This study uses a multidisciplinary evaluation strategy to assess immunogenicity, allergenicity, bone responses and physicochemical properties of a novel biomaterial scaffold. Two-photon stereolithography generated personalized custom-built scaffolds with a repeating 3D structure of Schwarz Primitive minimal surface unit cell with a specific pore size of ∼400 μm from three different methacrylated poly(d,l-lactide-co-ε-caprolactone) copolymers with lactide to caprolactone monomer ratios of 16 : 4, 18 : 2 and 9 : 1. Using in vitro and in vivo assays for bone responses, immunological reactions and degradation dynamics, we found that copolymer composition influenced the scaffold physicochemical and biological properties. The scaffolds with the fastest degradation rate correlated with adverse cellular effects and mechanical stiffness correlated with in vitro osteoblast mineralization. The physicochemical properties also correlated with in vivo bone healing and immune responses. Overall these observations provide compelling support for these scaffolds for bone repair and illustrate the effectiveness of a promising multidisciplinary strategy with great potential for the preclinical evaluation of biomaterials.
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Affiliation(s)
- Carina Kampleitner
- Department of Pharmacology and Toxicology, University of Vienna, Vienna, Austria
| | - Katayoon Changi
- Laboratory of Experimental Allergy, Division of Immunology, Allergy and Infectious Diseases, Medical University of Vienna, Department of Dermatology, Vienna, Austria.
| | - Reda M Felfel
- Advanced Materials Research Group, Faculty of Engineering, University of Nottingham, UK
| | - Colin A Scotchford
- Advanced Materials Research Group, Faculty of Engineering, University of Nottingham, UK
| | | | - Rainer Kluger
- Wolfson STEM Centre, School of Medicine, University of Nottingham, UK
| | - Oskar Hoffmann
- Department of Pharmacology and Toxicology, University of Vienna, Vienna, Austria
| | - David M Grant
- Advanced Materials Research Group, Faculty of Engineering, University of Nottingham, UK
| | - Michelle M Epstein
- Laboratory of Experimental Allergy, Division of Immunology, Allergy and Infectious Diseases, Medical University of Vienna, Department of Dermatology, Vienna, Austria.
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13
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Vidal L, Kampleitner C, Brennan MÁ, Hoornaert A, Layrolle P. Reconstruction of Large Skeletal Defects: Current Clinical Therapeutic Strategies and Future Directions Using 3D Printing. Front Bioeng Biotechnol 2020; 8:61. [PMID: 32117940 PMCID: PMC7029716 DOI: 10.3389/fbioe.2020.00061] [Citation(s) in RCA: 90] [Impact Index Per Article: 22.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2019] [Accepted: 01/24/2020] [Indexed: 12/25/2022] Open
Abstract
The healing of bone fractures is a well-orchestrated physiological process involving multiple cell types and signaling molecules interacting at the fracture site to replace and repair bone tissue without scar formation. However, when the lesion is too large, normal healing is compromised. These so-called non-union bone fractures, mostly arising due to trauma, tumor resection or disease, represent a major therapeutic challenge for orthopedic and reconstructive surgeons. In this review, we firstly present the current commonly employed surgical strategies comprising auto-, allo-, and xenograft transplantations, as well as synthetic biomaterials. Further to this, we discuss the multiple factors influencing the effectiveness of the reconstructive therapy. One essential parameter is adequate vascularization that ensures the vitality of the bone grafts thereby supporting the regeneration process, however deficient vascularization presents a frequently encountered problem in current management strategies. To address this challenge, vascularized bone grafts, including free or pedicled fibula flaps, or in situ approaches using the Masquelet induced membrane, or the patient’s body as a bioreactor, comprise feasible alternatives. Finally, we highlight future directions and novel strategies such as 3D printing and bioprinting which could overcome some of the current challenges in the field of bone defect reconstruction, with the benefit of fabricating personalized and vascularized scaffolds.
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Affiliation(s)
- Luciano Vidal
- INSERM, UMR 1238, PHY-OS, Bone Sarcomas and Remodeling of Calcified Tissues, Faculty of Medicine, University of Nantes, Nantes, France
| | - Carina Kampleitner
- Department of Pharmacology and Toxicology, University of Vienna, Vienna, Austria
| | - Meadhbh Á Brennan
- INSERM, UMR 1238, PHY-OS, Bone Sarcomas and Remodeling of Calcified Tissues, Faculty of Medicine, University of Nantes, Nantes, France.,Harvard School of Engineering and Applied Sciences, Harvard University, Cambridge, MA, United States
| | - Alain Hoornaert
- INSERM, UMR 1238, PHY-OS, Bone Sarcomas and Remodeling of Calcified Tissues, Faculty of Medicine, University of Nantes, Nantes, France.,CHU Nantes, Department of Implantology, Faculty of Dental Surgery, University of Nantes, Nantes, France
| | - Pierre Layrolle
- INSERM, UMR 1238, PHY-OS, Bone Sarcomas and Remodeling of Calcified Tissues, Faculty of Medicine, University of Nantes, Nantes, France
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14
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Abstract
Large non-union bone fractures are a significant challenge in orthopedic surgery. Although auto- and allogeneic bone grafts are excellent for healing such lesions, there are potential complications with their use. Thus, material scientists are developing synthetic, biocompatible biomaterials to overcome these problems. In this study, we present a multidisciplinary platform for evaluating biomaterials for bone repair. We combined expertise from bone biology and immunology to develop a platform including in vitro osteoclast (OC) and osteoblast (OB) assays and in vivo mouse models of bone repair, immunogenicity, and allergenicity. We demonstrate how to perform the experiments, summarize the results, and report on biomaterial biocompatibility. In particular, we tested OB viability, differentiation, and mineralization and OC viability and differentiation in the context of β-tricalcium phosphate (β-TCP) disks. We also tested a β-TCP/Collagen (β-TCP/C) foam which is a commercially available material used clinically for bone repair in a critical-sized calvarial bone defect mouse model to determine the effects on the early phase of bone healing. In parallel experiments, we evaluated immune and allergic responses in mice. Our approach generates a biological compatibility profile of a bone biomaterial with a range of parameters necessary for predicting the biocompatibility of biomaterials used for bone healing and repair in patients.
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Affiliation(s)
| | - Jessika Obi
- Laboratory of Experimental Allergy, Division of Immunology, Allergy and Infectious Diseases, Department of Dermatology, Medical University of Vienna
| | - Nicola Vassilev
- Laboratory of Experimental Allergy, Division of Immunology, Allergy and Infectious Diseases, Department of Dermatology, Medical University of Vienna
| | - Michelle M Epstein
- Laboratory of Experimental Allergy, Division of Immunology, Allergy and Infectious Diseases, Department of Dermatology, Medical University of Vienna
| | - Oskar Hoffmann
- Department of Pharmacology and Toxicology, University of Vienna;
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