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Murakami T, Matsugami D, Yoshida W, Imamura K, Bizenjima T, Seshima F, Saito A. Healing of Experimental Periodontal Defects Following Treatment with Fibroblast Growth Factor-2 and Deproteinized Bovine Bone Mineral. Biomolecules 2021; 11:biom11060805. [PMID: 34072351 PMCID: PMC8226676 DOI: 10.3390/biom11060805] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2021] [Revised: 05/25/2021] [Accepted: 05/26/2021] [Indexed: 12/17/2022] Open
Abstract
The aim of this study was to investigate the effects of fibroblast growth factor (FGF)-2 used in combination with deproteinized bovine bone mineral (DBBM) on the healing of experimental periodontal defects. Periodontal defects created in rats were treated by FGF-2, DBBM, FGF-2 + DBBM, or left unfilled. Microcomputed tomography, histological, and immunohistochemical examinations were used to evaluate healing. In vitro cell viability/proliferation on DBBM with/without FGF-2 was assessed by WST-1. Cell behavior was analyzed using scanning electron and confocal laser scanning microscopy. Osteogenic differentiation was evaluated by staining with alkaline phosphatase and alizarin red. Bone volume fraction was significantly greater in FGF-2 and FGF-2 + DBBM groups than in other groups at 2 and 4 weeks postoperatively. In histological assessment, newly formed bone in FGF-2 and FGF-2 + DBBM groups appeared to be greater than other groups. Significantly greater levels of proliferating cell nuclear antigen-, vascular endothelial growth factor-, and osterix-positive cells were observed in FGF-2 and FGF-2 + DBBM groups compared to Unfilled group. In vitro, addition of FGF-2 to DBBM promoted cell viability/proliferation, attachment/spreading, and osteogenic differentiation. The combination therapy using FGF-2 and DBBM was similarly effective as FGF-2 alone in the healing of experimental periodontal defects. In certain bone defect configurations, the combined use of FGF-2 and DBBM may enhance healing via promotion of cell proliferation, angiogenesis, and osteogenic differentiation.
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Affiliation(s)
- Tasuku Murakami
- Department of Periodontology, Tokyo Dental College, Chiyoda-ku, Tokyo 1010061, Japan; (T.M.); (D.M.); (W.Y.); (K.I.); (F.S.)
| | - Daisuke Matsugami
- Department of Periodontology, Tokyo Dental College, Chiyoda-ku, Tokyo 1010061, Japan; (T.M.); (D.M.); (W.Y.); (K.I.); (F.S.)
- Oral Health Science Center, Tokyo Dental College, Chiyoda-ku, Tokyo 1010061, Japan
| | - Wataru Yoshida
- Department of Periodontology, Tokyo Dental College, Chiyoda-ku, Tokyo 1010061, Japan; (T.M.); (D.M.); (W.Y.); (K.I.); (F.S.)
| | - Kentaro Imamura
- Department of Periodontology, Tokyo Dental College, Chiyoda-ku, Tokyo 1010061, Japan; (T.M.); (D.M.); (W.Y.); (K.I.); (F.S.)
- Oral Health Science Center, Tokyo Dental College, Chiyoda-ku, Tokyo 1010061, Japan
| | - Takahiro Bizenjima
- Chiba Dental Center, Tokyo Dental College, Mihama-ku, Chiba 2618502, Japan;
| | - Fumi Seshima
- Department of Periodontology, Tokyo Dental College, Chiyoda-ku, Tokyo 1010061, Japan; (T.M.); (D.M.); (W.Y.); (K.I.); (F.S.)
| | - Atsushi Saito
- Department of Periodontology, Tokyo Dental College, Chiyoda-ku, Tokyo 1010061, Japan; (T.M.); (D.M.); (W.Y.); (K.I.); (F.S.)
- Oral Health Science Center, Tokyo Dental College, Chiyoda-ku, Tokyo 1010061, Japan
- Correspondence:
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Oliveira ÉR, Nie L, Podstawczyk D, Allahbakhsh A, Ratnayake J, Brasil DL, Shavandi A. Advances in Growth Factor Delivery for Bone Tissue Engineering. Int J Mol Sci 2021; 22:E903. [PMID: 33477502 PMCID: PMC7831065 DOI: 10.3390/ijms22020903] [Citation(s) in RCA: 86] [Impact Index Per Article: 28.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2020] [Revised: 01/08/2021] [Accepted: 01/12/2021] [Indexed: 12/17/2022] Open
Abstract
Shortcomings related to the treatment of bone diseases and consequent tissue regeneration such as transplants have been addressed to some extent by tissue engineering and regenerative medicine. Tissue engineering has promoted structures that can simulate the extracellular matrix and are capable of guiding natural bone repair using signaling molecules to promote osteoinduction and angiogenesis essential in the formation of new bone tissues. Although recent studies on developing novel growth factor delivery systems for bone repair have attracted great attention, taking into account the complexity of the extracellular matrix, scaffolding and growth factors should not be explored independently. Consequently, systems that combine both concepts have great potential to promote the effectiveness of bone regeneration methods. In this review, recent developments in bone regeneration that simultaneously consider scaffolding and growth factors are covered in detail. The main emphasis in this overview is on delivery strategies that employ polymer-based scaffolds for spatiotemporal-controlled delivery of both single and multiple growth factors in bone-regeneration approaches. From clinical applications to creating alternative structural materials, bone tissue engineering has been advancing constantly, and it is relevant to regularly update related topics.
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Affiliation(s)
- Érica Resende Oliveira
- Food Engineering Department, School of Agronomy, Universidade Federal de Goiás, Campus Samambaia, Goiânia CEP 74690-900, Goiás, Brazil;
| | - Lei Nie
- College of Life Sciences, Xinyang Normal University, Xinyang 464000, China
| | - Daria Podstawczyk
- Department of Process Engineering and Technology of Polymer and Carbon Materials, Faculty of Chemistry, Wroclaw University of Science and Technology, 4/6 Norwida Street, 50-373 Wroclaw, Poland;
| | - Ahmad Allahbakhsh
- Department of Materials and Polymer Engineering, Faculty of Engineering, Hakim Sabzevari University, Sabzevar 9617976487, Iran;
| | - Jithendra Ratnayake
- Department of Oral Sciences, Faculty of Dentistry, University of Otago, Dunedin 9016, New Zealand;
| | - Dandara Lima Brasil
- Food Science Department, Universidade Federal de Lavras, Lavras CEP 37200-900, Minas Gerais, Brazil;
| | - Amin Shavandi
- BioMatter Unit—École Polytechnique de Bruxelles, Université Libre de Bruxelles, Avenue F.D. Roosevelt, 50—CP 165/61, 1050 Brussels, Belgium
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Ogay V, Mun EA, Kudaibergen G, Baidarbekov M, Kassymbek K, Zharkinbekov Z, Saparov A. Progress and Prospects of Polymer-Based Drug Delivery Systems for Bone Tissue Regeneration. Polymers (Basel) 2020; 12:E2881. [PMID: 33271770 PMCID: PMC7760650 DOI: 10.3390/polym12122881] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2020] [Revised: 11/23/2020] [Accepted: 11/25/2020] [Indexed: 12/12/2022] Open
Abstract
Despite the high regenerative capacity of bone tissue, there are some cases where bone repair is insufficient for a complete functional and structural recovery after damage. Current surgical techniques utilize natural and synthetic bone grafts for bone healing, as well as collagen sponges loaded with drugs. However, there are certain disadvantages associated with these techniques in clinical usage. To improve the therapeutic efficacy of bone tissue regeneration, a number of drug delivery systems based on biodegradable natural and synthetic polymers were developed and examined in in vitro and in vivo studies. Recent studies have demonstrated that biodegradable polymers play a key role in the development of innovative drug delivery systems and tissue engineered constructs, which improve the treatment and regeneration of damaged bone tissue. In this review, we discuss the most recent advances in the field of polymer-based drug delivery systems for the promotion of bone tissue regeneration and the physical-chemical modifications of polymers for controlled and sustained release of one or more drugs. In addition, special attention is given to recent developments on polymer nano- and microparticle-based drug delivery systems for bone regeneration.
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Affiliation(s)
- Vyacheslav Ogay
- Stem Cell Laboratory, National Center for Biotechnology, Nur-Sultan 010000, Kazakhstan; (V.O.); (G.K.)
| | - Ellina A. Mun
- School of Sciences and Humanities, Nazarbayev University, Nur-Sultan 010000, Kazakhstan;
| | - Gulshakhar Kudaibergen
- Stem Cell Laboratory, National Center for Biotechnology, Nur-Sultan 010000, Kazakhstan; (V.O.); (G.K.)
| | - Murat Baidarbekov
- Research Institute of Traumatology and Orthopedics, Nur-Sultan 010000, Kazakhstan;
| | - Kuat Kassymbek
- Department of Medicine, School of Medicine, Nazarbayev University, Nur-Sultan 010000, Kazakhstan; (K.K.); (Z.Z.)
| | - Zharylkasyn Zharkinbekov
- Department of Medicine, School of Medicine, Nazarbayev University, Nur-Sultan 010000, Kazakhstan; (K.K.); (Z.Z.)
| | - Arman Saparov
- Department of Medicine, School of Medicine, Nazarbayev University, Nur-Sultan 010000, Kazakhstan; (K.K.); (Z.Z.)
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Chun J, Jung J, Lee JH, Oh SH, Kwon YD. Osteogenic differentiation and inflammatory response of recombinant human bone morphogenetic protein-2 in human maxillary sinus membrane-derived cells. Exp Ther Med 2020; 20:81. [PMID: 32968438 PMCID: PMC7500044 DOI: 10.3892/etm.2020.9208] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2019] [Accepted: 06/02/2020] [Indexed: 12/14/2022] Open
Abstract
The aim of the present study was to investigate the osteogenic potential of human maxillary sinus membrane (hMSM)-derived cells, and the role of recombinant human bone morphogenetic protein-2 (rhBMP-2) in the inflammatory response of hMSM-derived cells and gingival fibroblasts following sinus floor elevation procedure (SFE). hMSM-derived cells from the samples were isolated, subcultured, and analyzed using immunohistochemical staining and flow cytometry. The hMSM-derived cells obtained from passage 6 were used for Alizarin Red staining and quantitative reverse transcription-quantitative PCR to observe its osteogenic activity and inflammatory reaction upon supplementation with rhBMP-2. The hMSM-derived cells were shown to be heterogeneous, as indicated by their positive expression of human mesenchymal stem cell markers (STRO-1, high mobility group AT-hook 2, CD44, CD105 and OCT-3/4), fibroblast cell marker (fibroblast-specific protein 1) and epithelial cell marker (epithelial cell adhesion molecule). Calcium nodules were found to be more notably evident in the rhBMP-2 group, following osteogenic differentiation. The gene expression of osteogenic markers was significantly upregulated in the cells supplemented with rhBMP-2. Supplementation with rhBMP-2 also enhanced the expression of inflammatory markers in hMSM-derived cells and gingival fibroblasts; however, NF-κB and TNF-α expression was not significantly increased compared with the control in the hMSM-derived cells. hMSM contains mesenchymal stem cells (MSCs) capable of differentiating into osteogenic cells. The supplementation of rhBMP-2 enhanced osteogenic differentiation and induced an inflammatory response which was greater in gingival fibroblasts compared with hMSM-derived cells. In summary, the hMSM is a potential contributor to the osteogenic process following SFE, and the use of rhBMP-2 may increase the inflammatory response accordingly. The gingival tissue may be responsible for the increased inflammatory response by rhBMP-2 and postoperative complications.
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Affiliation(s)
- Jeewan Chun
- Department of Dentistry, Graduate School, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Junho Jung
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Jae-Hyung Lee
- Department of Maxillofacial Regenerative Medicine, School of Dentistry, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Sang-Hwan Oh
- Department of Dental Hygiene, College of Medical Science, Konyang University, Daejeon 35365, Republic of Korea
| | - Yong-Dae Kwon
- Department of Dentistry, Graduate School, Kyung Hee University, Seoul 02447, Republic of Korea.,Department of Oral and Maxillofacial Surgery, School of Dentistry, Kyung Hee University, Seoul 02447, Republic of Korea
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Kämmerer PW, Pabst AM, Dau M, Staedt H, Al-Nawas B, Heller M. Immobilization of BMP-2, BMP-7 and alendronic acid on titanium surfaces: Adhesion, proliferation and differentiation of bone marrow-derived stem cells. J Biomed Mater Res A 2019; 108:212-220. [PMID: 31587476 DOI: 10.1002/jbm.a.36805] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2018] [Revised: 08/28/2019] [Accepted: 09/03/2019] [Indexed: 12/11/2022]
Abstract
This study analyzed the influence of titanium (TiO2 ) surface modifications with two osteogenic proteins (BMP-2, BMP-7) and an anti-osteoclastic drug (alendronic acid [AA]) on sandblasted/acid-etched (SLA) and plain TiO2 (PT) on cell adhesion, proliferation and differentiation (alkaline phosphatase [AP] and osteocalcin [OC]) of bone-marrow derived stem cells (BMSCs) after 1, 3 and 7 days in-vitro. Initially, AA surfaces showed the highest cell number and surface coverage. At day 3 and 7, BMP and AA-modified surfaces exhibited a significantly enhanced cell growth. For proliferation, at days 3 and 7, an enhancement on BMP-2, BMP-7 and AA-surfaces was seen. At day 7, SLA also showed a higher proliferation when compared to PT. Initially, AP expression was elevated on SLA and AA surfaces. At days 3 and 7, a significant increased AP expression was seen for SLA, BMP-2, BMP-7 and AA discs. For OC, SLA and AA surfaces had the highest expression after 1 day whereas after 3 and 7 days a significant difference was recorded for SLA, BMP-2, BMP-7 and AA. In conclusion, a beneficial biological effect of a chemical immobilization method of BMP-2, BMP-7 and alendronate onto titanium surfaces on BMSCs was proven.
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Affiliation(s)
- Peer W Kämmerer
- Department of Oral- and Maxillofacial Surgery, University Medical Center Mainz, Mainz, Germany
| | - Andreas M Pabst
- Department of Oral- and Maxillofacial Surgery, Federal Armed Forces Hospital, Koblenz, Germany
| | - Michael Dau
- Department of Oral- and Maxillofacial Surgery, University Medical Center Rostock, Rostock, Germany
| | - Henning Staedt
- Private Practice and Department of Prosthodontics and Materials Science, University Medical Center Rostock, Rostock, Germany
| | - Bilal Al-Nawas
- Department of Oral- and Maxillofacial Surgery, University Medical Center Mainz, Mainz, Germany
| | - Martin Heller
- Department of Gynecology, Johannes Gutenberg University Medical Center, Mainz, Germany
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Pranskunas M, Galindo-Moreno P, Padial-Molina M. Extraction Socket Preservation Using Growth Factors and Stem Cells: a Systematic Review. EJOURNAL OF ORAL MAXILLOFACIAL RESEARCH 2019; 10:e7. [PMID: 31620269 PMCID: PMC6788421 DOI: 10.5037/jomr.2019.10307] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/21/2019] [Accepted: 09/05/2019] [Indexed: 12/24/2022]
Abstract
Objectives To evaluate the reported literature on the use of stem cells or growth factors for post extraction treatment of the alveolar bone. Material and Methods A NCBI PubMed and PubMed Central databases search was conducted between September 2010 and August 2018, to identify animal or clinical studies reporting the clinical, radiographical and/or histological outcomes of socket preservation techniques after applying mesenchymal stem cells or growth factors. Only studies published in English language in the last 10 years were included in the study. Results Eleven studies were identified fulfilling the inclusion criteria. They evaluate a total of 386 post extraction sockets. The main tested materials identified in the current review were bone morphogenetic protein-2 - 3 studies and mesenchymal stem cells - 3 studies. Other comparators were bone morphogenetic protein-9, platelet-derived growth factor-BB homodimers and bone marrow. Overall evaluation indicate positive results for all test groups showing differences in final socket width between 0.64 and 1.28 mm favouring the test groups. Histologically, no particular differences are detected between test and control groups. Most of the studies present low risk of bias. Conclusions In general, the use of mesenchymal stem cells or bioactive osteogenic molecules favours bone regeneration after tooth extraction, as evaluated clinically, radiographically and histologically. However, specific differences that support particular recommendations are still unclear in light of the current published evidence. Future studies should include the standardization of the mesenchymal stem cells selection and purification as well as dosage and delivery methods of bioactive molecules.
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Affiliation(s)
- Mindaugas Pranskunas
- Department of Oral and Maxillofacial Surgery, Faculty of Odontology, Medical Academy, Lithuanian University of Health Sciences, KaunasLithuania
| | - Pablo Galindo-Moreno
- Department of Oral Surgery and Implant Dentistry. School of Dentistry, University of Granada, GranadaSpain
| | - Miguel Padial-Molina
- Department of Oral Surgery and Implant Dentistry. School of Dentistry, University of Granada, GranadaSpain
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Galli C, Colangelo M, Pedrazzi G, Guizzardi S. The Response of Osteoblasts and Bone to Sinusoidal Electromagnetic Fields: Insights from the Literature. Calcif Tissue Int 2019; 105:127-147. [PMID: 30997574 DOI: 10.1007/s00223-019-00554-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/29/2018] [Accepted: 04/11/2019] [Indexed: 12/23/2022]
Abstract
Electromagnetic fields (EMFs) have been proposed as a tool to ameliorate bone formation and healing. Despite their promising results, however, they have failed to enter routine clinical protocols to treat bone conditions where higher bone mass has to be achieved. This is no doubt also due to a fundamental lack of knowledge and understanding on their effects and the optimal settings for attaining the desired therapeutic effects. This review analysed the available in vitro and in vivo studies that assessed the effects of sinusoidal EMFs (SEMFs) on bone and bone cells, comparing the results and investigating possible mechanisms of action by which SEMFs interact with tissues and cells. The effects of SEMFs on bone have not been as thoroughly investigated as pulsed EMFs; however, abundant evidence shows that SEMFs affect the proliferation and differentiation of osteoblastic cells, acting on multiple cellular mechanisms. SEMFs have also proven to increase bone mass in rodents under normal conditions and in osteoporotic animals.
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Affiliation(s)
- C Galli
- Department of Medicine and Surgery, University of Parma, Parma, Italy.
| | - M Colangelo
- Department of Medicine and Surgery, Histology and Embryology Lab, University of Parma, Parma, Italy
| | - G Pedrazzi
- Department of Medicine and Surgery, Neuroscience Unit, University of Parma, Via Volturno 39, 43126, Parma, Italy
| | - S Guizzardi
- Department of Medicine and Surgery, Histology and Embryology Lab, University of Parma, Parma, Italy
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De Witte TM, Fratila-Apachitei LE, Zadpoor AA, Peppas NA. Bone tissue engineering via growth factor delivery: from scaffolds to complex matrices. Regen Biomater 2018; 5:197-211. [PMID: 30094059 PMCID: PMC6077800 DOI: 10.1093/rb/rby013] [Citation(s) in RCA: 277] [Impact Index Per Article: 46.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2018] [Revised: 05/11/2018] [Accepted: 05/14/2018] [Indexed: 02/06/2023] Open
Abstract
In recent years, bone tissue engineering has emerged as a promising solution to the limitations of current gold standard treatment options for bone related-disorders such as bone grafts. Bone tissue engineering provides a scaffold design that mimics the extracellular matrix, providing an architecture that guides the natural bone regeneration process. During this period, a new generation of bone tissue engineering scaffolds has been designed and characterized that explores the incorporation of signaling molecules in order to enhance cell recruitment and ingress into the scaffold, as well as osteogenic differentiation and angiogenesis, each of which is crucial to successful bone regeneration. Here, we outline and critically analyze key characteristics of successful bone tissue engineering scaffolds. We also explore candidate materials used to fabricate these scaffolds. Different growth factors involved in the highly coordinated process of bone repair are discussed, and the key requirements of a growth factor delivery system are described. Finally, we concentrate on an analysis of scaffold-based growth factor delivery strategies found in the recent literature. In particular, the incorporation of two-phase systems consisting of growth factor-loaded nanoparticles embedded into scaffolds shows great promise, both by providing sustained release over a therapeutically relevant timeframe and the potential to sequentially deliver multiple growth factors.
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Affiliation(s)
- Tinke-Marie De Witte
- Department of Biomedical Engineering, The University of Texas at Austin, Austin, TX, USA
- Additive Manufacturing Laboratory, Department of Biomechanical Engineering, Delft University of Technology (TU Delft), CD Delft, The Netherlands
| | - Lidy E Fratila-Apachitei
- Additive Manufacturing Laboratory, Department of Biomechanical Engineering, Delft University of Technology (TU Delft), CD Delft, The Netherlands
| | - Amir A Zadpoor
- Additive Manufacturing Laboratory, Department of Biomechanical Engineering, Delft University of Technology (TU Delft), CD Delft, The Netherlands
| | - Nicholas A Peppas
- Department of Biomedical Engineering, The University of Texas at Austin, Austin, TX, USA
- McKetta Department of Chemical Engineering, The University of Texas at Austin, Austin, TX, USA
- Institute for Biomaterials, Drug Delivery and Regenerative Medicine, The University of Texas at Austin, Austin, TX, USA
- Department of Pediatrics, and Department of Surgery and Perioperative Care, Dell Medical School, The University of Texas at Austin, Austin, TX, USA
- Division of Molecular Pharmaceutics and Drug Delivery, College of Pharmacy, The University of Texas at Austin, Austin, TX, USA
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Benic GI, Joo MJ, Yoon SR, Cha JK, Jung UW. Primary ridge augmentation with collagenated xenogenic block bone substitute in combination with collagen membrane and rhBMP-2: a pilot histological investigation. Clin Oral Implants Res 2017; 28:1543-1552. [DOI: 10.1111/clr.13024] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/14/2017] [Indexed: 11/29/2022]
Affiliation(s)
- Goran I. Benic
- Clinic of Fixed and Removable Prosthodontics and Dental Material Science; Center of Dental Medicine; University of Zurich; Switzerland
| | - Myung-Jae Joo
- Department of Periodontology; Research Institute for Periodontal Regeneration; Yonsei University College of Dentistry; Seoul Republic of Korea
| | - So-Ra Yoon
- Department of Periodontology; Research Institute for Periodontal Regeneration; Yonsei University College of Dentistry; Seoul Republic of Korea
| | - Jae-Kook Cha
- Department of Periodontology; Research Institute for Periodontal Regeneration; Yonsei University College of Dentistry; Seoul Republic of Korea
| | - Ui-Won Jung
- Department of Periodontology; Research Institute for Periodontal Regeneration; Yonsei University College of Dentistry; Seoul Republic of Korea
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Fujioka‐Kobayashi M, Schaller B, Saulacic N, Pippenger BE, Zhang Y, Miron RJ. Absorbable collagen sponges loaded with recombinant bone morphogenetic protein 9 induces greater osteoblast differentiation when compared to bone morphogenetic protein 2. Clin Exp Dent Res 2017; 3:32-40. [PMID: 29744176 PMCID: PMC5839213 DOI: 10.1002/cre2.55] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2016] [Revised: 11/27/2016] [Accepted: 12/07/2016] [Indexed: 12/29/2022] Open
Abstract
The use of growth factors for the regeneration of soft and hard tissues has been utilized extensively in dental medicine over the past decade. Recently our group found that recombinant human bone morphogenetic protein 9 (rhBMP9) was more osteopromotive than recombinant human bone morphogenetic protein 2 (rhBMP2) when combined with a deprotenized bovine bone mineral bone grafting material. The aim of the present in vitro study was to evaluate the regenerative potential of an absorbable collagen sponge(ACS) specifically designed for extraction socket healing loaded with rhBMP9 when compared to rhBMP2. The adsorption and release kinetics of rhBMP2 and rhBMP9 were first investigated by enzyme-linked immunosorbent assay quantification. Then, the cellular effects of stromal cell line (ST2) preosteoblasts were investigated utilizing four groups including rhBMP2 and rhBMP9 at both low(10 ng/ml) and high(100 ng/ml) concentrations loaded onto ACS. Cellular attachment(8 hours) and proliferation(1, 3, and 5 days) as well as osteoblast differentiation were investigated by real-time polymerase chain reaction (PCR) at 3 and 14 days, alkaline phosphatase (ALP) activity at 7 days, and alizarin red staining at 14 days. ACS fully adsorbed both rhBMP2 and rhBMP9 that were slowly released up to 10 days. Although neither rhBMP2 nor rhBMP9 had any effects on cell attachment or proliferation, pronounced effects were observed on osteoblast differentiation. ALP activity was increased seven-fold with rhBMP2-high, whereas a marked 10-fold and 20-fold increase was observed with rhBMP9-low and high loaded to ACS, respectively. Furthermore, mRNA levels of collagen1, ALP, bone sialoprotein, and osteocalcin were all significantly higher for rhBMP9 when compared to control or rhBMP2 groups. Alizarin red staining further confirmed that rhBMP9-low and high demonstrated marked increases in mineralization potential when compared to rhBMP2-high. The results demonstrate the marked effect of rhBMP9 on osteoblast differentiation when combined with ACS in comparison to rhBMP2 at doses as much as 10 times lower. Further in vivo studies are necessary to investigate whether the regenerative potential is equally as potent.
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Affiliation(s)
- Masako Fujioka‐Kobayashi
- Department of Periodontology, College of Dental MedicineNova Southeastern UniversityFloridaUSA
- Department of Cranio‐Maxillofacial Surgery, Bern University HospitalInselspitalSwitzerland
- Department of Oral Surgery, Clinical Dentistry, Institute of Biomedical SciencesTokushima University Graduate SchoolJapan
| | - Benoit Schaller
- Department of Cranio‐Maxillofacial Surgery, Bern University HospitalInselspitalSwitzerland
| | - Nikola Saulacic
- Department of Cranio‐Maxillofacial Surgery, Bern University HospitalInselspitalSwitzerland
| | | | - Yufeng Zhang
- Department of Oral ImplantologyUniversity of WuhanChina
| | - Richard J. Miron
- Department of Periodontology, College of Dental MedicineNova Southeastern UniversityFloridaUSA
- Department of Periodontics and Oral MedicineUniversity of Michigan School of DentistryMichiganUSA
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Hyaluronic Acid Gel-Based Scaffolds as Potential Carrier for Growth Factors: An In Vitro Bioassay on Its Osteogenic Potential. J Clin Med 2016; 5:jcm5120112. [PMID: 27916889 PMCID: PMC5184785 DOI: 10.3390/jcm5120112] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2016] [Revised: 11/11/2016] [Accepted: 11/24/2016] [Indexed: 12/13/2022] Open
Abstract
Hyaluronic acid (HA) has been utilized for a variety of regenerative medical procedures due to its widespread presence in connective tissue and perceived biocompatibility. The aim of the present study was to investigate HA in combination with recombinant human bone morphogenetic protein 9 (rhBMP9), one of the most osteogenic growth factors of the BMP family. HA was first combined with rhBMP9 and assessed for the adsorption and release of rhBMP9 over 10 days by ELISA. Thereafter, ST2 pre-osteoblasts were investigated by comparing (1) control tissue culture plastic, (2) HA alone, and (3) HA with rhBMP9 (100 ng/mL). Cellular proliferation was investigated by a MTS assay at one, three and five days and osteoblast differentiation was investigated by alkaline phosphatase (ALP) activity at seven days, alizarin red staining at 14 days and real-time PCR for osteoblast differentiation markers. The results demonstrated that rhBMP9 adsorbed within HA scaffolds and was released over a 10-day period in a controlled manner. While HA and rhBMP9 had little effect on cell proliferation, a marked and pronounced effect was observed for cell differentiation. rhBMP9 significantly induced ALP activity, mRNA levels of collagen1α2, and ALP and osteocalcin (OCN) at three or 14 days. HA also demonstrated some ability to induce osteoblast differentiation by increasing mRNA levels of OCN and increasing alizarin red staining at 14 days. In conclusion, the results from the present study demonstrate that (1) HA may serve as a potential carrier for various growth factors, and (2) rhBMP9 is a potent and promising inducer of osteoblast differentiation. Future animal studies are now necessary to investigate this combination approach in vivo.
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Li C, Hotz B, Ling S, Guo J, Haas DS, Marelli B, Omenetto F, Lin SJ, Kaplan DL. Regenerated silk materials for functionalized silk orthopedic devices by mimicking natural processing. Biomaterials 2016; 110:24-33. [PMID: 27697669 DOI: 10.1016/j.biomaterials.2016.09.014] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2016] [Revised: 09/14/2016] [Accepted: 09/18/2016] [Indexed: 11/27/2022]
Abstract
Silk fibers spun by silkworms and spiders exhibit exceptional mechanical properties with a unique combination of strength, extensibility and toughness. In contrast, the mechanical properties of regenerated silk materials can be tuned through control of the fabrication process. Here we introduce a biomimetic, all-aqueous process, to obtain bulk regenerated silk-based materials for the fabrication of functionalized orthopedic devices. The silk materials generated in the process replicate the nano-scale structure of natural silk fibers and possess excellent mechanical properties. The biomimetic materials demonstrate excellent machinability, providing a path towards the fabrication of a new family of resorbable orthopedic devices where organic solvents are avoided, thus allowing functionalization with bioactive molecules to promote bone remodeling and integration.
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Affiliation(s)
- Chunmei Li
- Department of Biomedical Engineering, Tufts University, 4 Colby St. Medford, MA 02155, USA
| | - Blake Hotz
- Department of Biomedical Engineering, Tufts University, 4 Colby St. Medford, MA 02155, USA
| | - Shengjie Ling
- Department of Biomedical Engineering, Tufts University, 4 Colby St. Medford, MA 02155, USA; Department of Civil and Environmental Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue Cambridge, MA 02139, USA
| | - Jin Guo
- Department of Biomedical Engineering, Tufts University, 4 Colby St. Medford, MA 02155, USA
| | - Dylan S Haas
- Department of Biomedical Engineering, Tufts University, 4 Colby St. Medford, MA 02155, USA
| | - Benedetto Marelli
- Department of Biomedical Engineering, Tufts University, 4 Colby St. Medford, MA 02155, USA; Department of Civil and Environmental Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue Cambridge, MA 02139, USA
| | - Fiorenzo Omenetto
- Department of Biomedical Engineering, Tufts University, 4 Colby St. Medford, MA 02155, USA
| | - Samuel J Lin
- Divisions of Plastic Surgery and Otolaryngology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA 02215, USA
| | - David L Kaplan
- Department of Biomedical Engineering, Tufts University, 4 Colby St. Medford, MA 02155, USA.
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13
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Saito E, Saito A, Kato H, Shibukawa Y, Inoue S, Yuge F, Nakajima T, Takahashi T, Kawanami M. A Novel Regenerative Technique Combining Bone Morphogenetic Protein-2 With Fibroblast Growth Factor-2 for Circumferential Defects in Dog Incisors. J Periodontol 2016; 87:1067-74. [PMID: 27240475 DOI: 10.1902/jop.2016.150746] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
BACKGROUND Periodontal regeneration of incisors is necessary for esthetic recovery. A novel regenerative method combining bone morphogenetic protein (BMP)-2 and fibroblast growth factor (FGF)-2 was developed. The purpose of this study is to evaluate periodontal healing, including root coverage, in circumferential defects of incisors. METHODS Fifty incisors in five beagles were used. After circumferential defects were surgically created, each group, consisting of ten recipient sites, received: 1) a double layer with FGF-2 (2 μg)/collagen as inner layer and BMP-2 (4 μg)/collagen as outer layer (FB-DL group); 2) collagen impregnated with both FGF-2 (2 μg) and BMP-2 (4 μg) (FB-M group); 3) BMP-2 (4 μg)/collagen (B group); 4) FGF-2 (4 μg)/collagen (F group); or 5) collagen (C group). Dogs were sacrificed 8 weeks post-surgery, and healing was evaluated histologically. RESULTS The three groups treated with BMP-2 showed enhanced new bone formation compared with control and F groups (P < 0.05). Furthermore, connective tissue attachment with cementum regeneration in the FB-DL group was significantly greater than in FB-M and B groups (P <0.05). Ankylosis in the FB-DL group was significantly less than in FB-M and B groups (P <0.05). Gingival recession was inhibited significantly better in FB-DL and FB-M groups compared with control and B groups. CONCLUSION These data support development of a double-layer method combining BMP-2 and FGF-2 as a therapeutic approach to periodontal regeneration at incisors with horizontal circumferential defects.
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Affiliation(s)
- Emiko Saito
- Department of Periodontology and Endodontology, Hokkaido University Graduate School of Dental Medicine, Sapporo, Japan
| | - Akira Saito
- Department of Crown and Bridge Prosthodontics, Hokkaido University Graduate School of Dental Medicine
| | | | | | - Satoshi Inoue
- Division of Clinical Education, Hokkaido University Graduate School of Dental Medicine
| | - Fumihiko Yuge
- Department of Crown and Bridge Prosthodontics, Hokkaido University Graduate School of Dental Medicine
| | - Toshinori Nakajima
- Department of Crown and Bridge Prosthodontics, Hokkaido University Graduate School of Dental Medicine
| | - Tomomi Takahashi
- Support Section for Education and Research, Hokkaido University Graduate School of Dental Medicine
| | - Masamitsu Kawanami
- Department of Periodontology and Endodontology, Hokkaido University Graduate School of Dental Medicine, Sapporo, Japan
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14
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Kissling S, Seidenstuecker M, Pilz IH, Suedkamp NP, Mayr HO, Bernstein A. Sustained release of rhBMP-2 from microporous tricalciumphosphate using hydrogels as a carrier. BMC Biotechnol 2016; 16:44. [PMID: 27206764 PMCID: PMC4874020 DOI: 10.1186/s12896-016-0275-8] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2015] [Accepted: 05/12/2016] [Indexed: 11/25/2022] Open
Abstract
Background Tissue engineering and bone substitutes are subjects of intensive ongoing research. If the healing of bone fractures is delayed, osteoinductive materials that induce mesenchymal stem cells (MSCs) to form bone are necessary. The use of Bone Morphogenetic Protein - 2 is a common means to enhance effectiveness and accelerate the healing process. A delivery system that maintains and releases BMP biological activity in controlled fashion at the surgical site while preventing systemic diffusion (and thereby the risk of undesirable effects by controlling the amount of protein implanted) is essential. In this study, we aimed to test a cylindrical TCP-scaffold (porosity ~ 40 %, mean pore size 5 μm, high interconnectivity) in comparison to BMP-2. Recombinant human BMP-2 was dissolved in different hydrogels as a carrier, namely gelatin and alginate cross-linked with CaCl2-solution, or a solution of GDL and CaCO3. FITC-labeled Protein A was used as a model substance for rhBMP-2 in the pre-trials. For loading, the samples were put in a flow chamber and sealed with silicone rings. Using a directional vacuum, the samples were loaded with the alginate-BMP-2-mixture and the loading success monitored by observing changes in a fluorescent dye (FITC labeled Protein A) under a fluorescence microscope. A fluorescence reader and ELISA were employed to measure the release. Efficacy was determined in cell culture experiments (MG63 cells) via Live-Dead-Assay, FACS, WST-1-Assay, pNPP alkaline phosphatase assay and confocal microscopy. For statistical analysis, we calculated the mean and standard deviation and carried out an analysis of variance. Results Directional vacuum makes it possible to load nearly 100 % of the interconnected micropores with alginate mixed with rhBMP-2. Using alginate hardened with CaCl2 as a carrier, BMP-2's release can be decelerated significantly longer than with other hydrogels - eg, for over 28 days. The effects on osteoblast-like cells were an increase of the growth rate and expression of alkaline phosphatase while triggering no toxic effect. Conclusion The rhBMP-2-loaded microporous TCP scaffolds possess proliferative and osteoinductive potential. Alginate helps to lower the local growth factor dose below the cytotoxic limit, and allows the release period to be lengthened by at least 28 days. Electronic supplementary material The online version of this article (doi:10.1186/s12896-016-0275-8) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Steffen Kissling
- Center for Surgery, Department of Orthopedics and Trauma Surgery, Medical Center - University of Freiburg, Hugstetter Str.55, D-79106, Freiburg, Germany.
| | - Michael Seidenstuecker
- Center for Surgery, Department of Orthopedics and Trauma Surgery, Medical Center - University of Freiburg, Hugstetter Str.55, D-79106, Freiburg, Germany
| | - Ingo H Pilz
- Center for Surgery, Department of Orthopedics and Trauma Surgery, Medical Center - University of Freiburg, Hugstetter Str.55, D-79106, Freiburg, Germany
| | - Norbert P Suedkamp
- Center for Surgery, Department of Orthopedics and Trauma Surgery, Medical Center - University of Freiburg, Hugstetter Str.55, D-79106, Freiburg, Germany
| | - Hermann O Mayr
- Center for Surgery, Department of Orthopedics and Trauma Surgery, Medical Center - University of Freiburg, Hugstetter Str.55, D-79106, Freiburg, Germany
| | - Anke Bernstein
- Center for Surgery, Department of Orthopedics and Trauma Surgery, Medical Center - University of Freiburg, Hugstetter Str.55, D-79106, Freiburg, Germany
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15
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Chen B, Li B, Qi YJ, Ni QB, Pan ZQ, Wang H, Chen LB. Enhancement of tendon-to-bone healing after anterior cruciate ligament reconstruction using bone marrow-derived mesenchymal stem cells genetically modified with bFGF/BMP2. Sci Rep 2016; 6:25940. [PMID: 27173013 PMCID: PMC4865959 DOI: 10.1038/srep25940] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2016] [Accepted: 04/25/2016] [Indexed: 11/10/2022] Open
Abstract
Many strategies, including various growth factors and gene transfer, have been used to augment healing after anterior cruciate ligament (ACL) reconstruction. The biological environment regulated by the growth factors during the stage of tendon-bone healing was considered important in controlling the integrating process. The purpose of this study was to evaluate the effects of bone marrow-derived mesenchymal stem cells (BMSCs) genetically modified with bone morphogenetic protein 2 (BMP2) and basic fibroblast growth factor (bFGF) on healing after ACL reconstruction. BMSCs were infected with an adenoviral vector encoding BMP2 (AdBMP2) or bFGF (AdbFGF). Then, the infected BMSCs were surgically implanted into the tendon-bone interface. At 12 weeks postoperatively, the formation of abundant cartilage-like cells, smaller tibial bone tunnel and significantly higher ultimate load and stiffness levels, through histological analysis, micro-computed tomography and biomechanical testing, were observed. In addition, the AdBMP2-plus-AdbFGF group had the smallest bone tunnel and the best mechanical properties among all the groups. The addition of BMP2 or bFGF by gene transfer resulted in better cellularity, new bone formation and higher mechanical property, which contributed to the healing process after ACL reconstruction. Furthermore, the co-application of these two genes was more powerful and efficient than either single gene therapy.
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Affiliation(s)
- Biao Chen
- Department of Orthopaedic Surgery, Zhongnan Hospital, Wuhan University, Wuhan, China
| | - Bin Li
- Department of Orthopaedic Surgery, Zhongnan Hospital, Wuhan University, Wuhan, China
| | - Yong-Jian Qi
- Department of Orthopaedic Surgery, Zhongnan Hospital, Wuhan University, Wuhan, China
| | - Qu-Bo Ni
- Department of Orthopaedic Surgery, Zhongnan Hospital, Wuhan University, Wuhan, China
| | - Zheng-Qi Pan
- Department of Orthopaedic Surgery, Zhongnan Hospital, Wuhan University, Wuhan, China
| | - Hui Wang
- Department of Pharmacology, Basic Medical School, Wuhan University, Wuhan, China.,Hubei Provincial Key Laboratory of Developmentally Originated Disease, Wuhan, China
| | - Liao-Bin Chen
- Department of Orthopaedic Surgery, Zhongnan Hospital, Wuhan University, Wuhan, China.,Hubei Provincial Key Laboratory of Developmentally Originated Disease, Wuhan, China
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16
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Fujioka-Kobayashi M, Sawada K, Kobayashi E, Schaller B, Zhang Y, Miron RJ. Osteogenic potential of rhBMP9 combined with a bovine-derived natural bone mineral scaffold compared to rhBMP2. Clin Oral Implants Res 2016; 28:381-387. [PMID: 26988608 DOI: 10.1111/clr.12804] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/24/2016] [Indexed: 11/26/2022]
Abstract
OBJECTIVES Combination therapies of growth factors and scaffolds for bone tissue engineering are becoming routine for clinical use. BMP9 has previously been characterized as one of the most osteogenic inducers among the BMP superfamily; however, up until recently, BMP9 has only been available through adenovirus transfection experiments (gene therapy). While recombinant human (rh)BMP2 is regarded as the gold standard for bone regeneration with recombinant growth factors, recently the successful development of rhBMP9 brings intriguing new possibilities for future clinical use. The purpose of this pioneering study was to investigate the effects of rhBMP9 in comparison with rhBMP2 on an in vitro cell behavior of bone-forming osteoblasts when combined with a bone grafting material. MATERIAL AND METHODS Undifferentiated mouse ST2 stromal bone marrow cells were seeded onto bovine-derived natural bone mineral (NBM) particles treated with (i) control, (ii) rhBMP2 (10 ng/ml), (iii) rhBMP2 (100 ng/ml), (iv) rhBMP9 (10 ng/ml) and (v) rhBMP9 (100 ng/ml). The effects of rhBMPs were compared for cell adhesion at 8 h, cell proliferation at 1, 3 and 5 days and osteoblast differentiation as assessed by real-time PCR at 3 and 14 days for genes encoding Runx2, collagen1alpha2 (COL1a2), alkaline phosphatase (ALP) and osteocalcin (OCN). Furthermore, ALP staining and alizarin red staining were used to investigate localization of osteoblast differentiation marker and mineralization on NBM. RESULTS Although neither rhBMP2 nor rhBMP9 influenced cell attachment to NBM particles, both were able to stimulate cell proliferation at 3 days. Furthermore, all concentrations of rhBMPs were able to significantly induce mRNA levels of Runx2, COL1a2 and OCN at 3 days. Interestingly, only rhBMP9 was able to significantly upregulate mRNA levels of ALP up to eightfold, and ALP staining up to 25-fold, when compared to rhBMP2. In addition, only rhBMP9 (100 ng/ml) significantly increased alizarin red staining when compared to control and rhBMP2 (10 ng/ml) samples. CONCLUSION These results demonstrate that both rhBMP2 and rhBMP9 have osteopromotive properties on osteoblast differentiation. It was found that rhBMP9 additionally stimulated the osteopromotive potential of osteoblasts when compared to rhBMP2 by demonstrating higher levels of ALP expression and alizarin red staining. Further animal studies comparing both recombinant proteins are necessary to further characterize the osteoinductive potential of BMP9.
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Affiliation(s)
- Masako Fujioka-Kobayashi
- Department of Cranio-Maxillofacial Surgery, Bern University Hospital, Inselspital, Bern, Switzerland.,Masako Fujioka-Kobayashi, Department of Oral Surgery, Clinical Dentistry, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, Japan
| | - Kosaku Sawada
- Department of Cranio-Maxillofacial Surgery, Bern University Hospital, Inselspital, Bern, Switzerland.,Kosaku Sawada, Advanced Research Center, School of Life Dentistry at Niigata, The Nippon Dental University, Niigata, Japan
| | - Eizaburo Kobayashi
- Department of Cranio-Maxillofacial Surgery, Bern University Hospital, Inselspital, Bern, Switzerland
| | - Benoit Schaller
- Department of Cranio-Maxillofacial Surgery, Bern University Hospital, Inselspital, Bern, Switzerland
| | - Yufeng Zhang
- Department of Oral Implantology, University of Wuhan, Wuhan, China
| | - Richard J Miron
- Department of Preventive, Restorative and Pediatric Dentistry, University of Bern, Bern, Switzerland.,Department of Periodontology, Nova Southeastern University, Fort Lauderdale, FL, USA
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17
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Fujioka-Kobayashi M, Sawada K, Kobayashi E, Schaller B, Zhang Y, Miron RJ. Recombinant Human Bone Morphogenetic Protein 9 (rhBMP9) Induced Osteoblastic Behavior on a Collagen Membrane Compared With rhBMP2. J Periodontol 2016; 87:e101-7. [PMID: 26751345 DOI: 10.1902/jop.2016.150561] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
BACKGROUND Bone morphogenetic protein 9 (BMP9) has previously been characterized as one of the most osteogenic growth factors of the BMP family. To the best of the authors' knowledge, previous experiments have only used adenovirus transfection (gene therapy). With the recent development of recombinant human BMP9 (rhBMP9), the present study investigates the osteopromotive potential of BMP9 versus rhBMP2 when loaded onto collagen membranes. METHODS ST2 stromal bone marrow cells were seeded onto: 1) control; 2) low-dose rhBMP2 (10 ng/mL); 3) high-dose rhBMP2 (100 ng/mL); 4) low-dose rhBMP9 (10 ng/mL); and 5) high-dose rhBMP9 (100 ng/mL) porcine collagen membranes. The following parameters were compared among groups: 1) cell adhesion (at 8 hours); 2) cell proliferation (at 1, 3, and 5 days); 3) real-time polymerase chain reaction for genes encoding runt-related transcription factor 2; 4) alkaline phosphatase (ALP); 5) bone sialoprotein ([BSP] at 3 and 14 days); and 6) alizarin red staining (at 14 days). RESULTS rhBMP2 and rhBMP9 demonstrated little effect on cell attachment and proliferation; however, pronounced increases were observed in osteoblast differentiation. All groups significantly induced ALP messenger RNA (mRNA) levels at 3 days and BSP levels at 14 days; however, high-dose rhBMP9 showed significantly higher values compared with all other groups for ALP levels (five-fold increase at 3 days and two-fold increase at 14 days). Alizarin red staining further revealed both concentrations of rhBMP9 induced up to three-fold more staining compared with rhBMP2. CONCLUSIONS Results indicate that the combination of collagen membranes with rhBMP9 induced significantly higher ALP mRNA expression and alizarin red staining compared with rhBMP2. These findings suggest that rhBMP9 may be a suitable growth factor for future regenerative procedures in bone biology.
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Affiliation(s)
- Masako Fujioka-Kobayashi
- Department of Operative, Preventive and Pediatric Dentistry, University of Bern, Bern, Switzerland.,Department of Oral Surgery, Institute of Biomedical Sciences, Tokushima University, Tokushima, Japan
| | - Kosaku Sawada
- Department of Operative, Preventive and Pediatric Dentistry, University of Bern, Bern, Switzerland.,Advanced Research Center, School of Life Dentistry at Niigata, The Nippon Dental University, Niigata, Japan
| | - Eizaburo Kobayashi
- Department of Operative, Preventive and Pediatric Dentistry, University of Bern, Bern, Switzerland
| | - Benoit Schaller
- Department of Operative, Preventive and Pediatric Dentistry, University of Bern, Bern, Switzerland
| | - Yufeng Zhang
- Department of Oral Implantology, Wuhan University, Wuhan, China
| | - Richard J Miron
- Department of Periodontology, School of Dental Medicine, University of Bern.,Department of Periodontology, College of Dental Medicine, Nova Southeastern University, Fort Lauderdale, FL
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18
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Zhang Y, Yang S, Zhou W, Fu H, Qian L, Miron RJ. Addition of a Synthetically Fabricated Osteoinductive Biphasic Calcium Phosphate Bone Graft to BMP2 Improves New Bone Formation. Clin Implant Dent Relat Res 2015; 18:1238-1247. [PMID: 26510170 DOI: 10.1111/cid.12384] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
BACKGROUND Bone morphogenetic protein-2 (BMP2) has been successfully utilized in dentistry to promote new bone formation because of its osteoinductive ability to recruit mesenchymal progenitor cells and induce their differentiation to bone-forming osteoblasts. Recently, novel biphasic calcium phosphate scaffolds have been developed with similar osteoinductive properties capable of forming ectopic bone formation. PURPOSE The aim of the present study was to assess whether the combination of BMP2 with this novel Biphasic Calcium Phosphate (BCP) scaffold may additionally promote new bone regeneration. MATERIALS AND METHODS Cylindrical bone defects measuring 2.5 mm were created bilaterally in the femurs of 18 Wistar rats. After 4 weeks, the following six groups were assessed for new bone formation by micro-computed tomography (CT) as well as histological assessment: 1) collagen scaffolds + 20 μg of BMP2; 2) collagen scaffolds + 50 μg of BMP2; 3) collagen scaffolds + 100 μg of BMP2; 4) BCP scaffolds + 20 μg of BMP2; 5) BCP scaffolds + 50 μg of BMP2; and 6) BCP scaffolds + 100 μg of BMP2. Furthermore, tartrate-resistant acid phosphatase (TRAP) staining was utilized to assess osteoclast activity and osteoclast number. The release kinetics of BMP2 from both BCP and collagen scaffolds was investigated over a 14-day period. RESULTS The results from present study demonstrate that BMP2 is able to promote new bone formation in a concentration dependant manner when loaded with either a collagen scaffolds or BCP scaffolds. Micro-CT analysis demonstrated significantly higher levels of new bone formation in groups containing BCP + BMP2 when compared with collagen scaffolds + BMP2. BMP2 had little effect on osteoclast activity; however, less TRAP staining and osteoclast number was observed in the defects receiving collagen scaffolds when compared with BCP scaffolds. The release of BMP2 over time was rapidly released after 1 day on BCP scaffolds whereas a gradually release over time was observed for collagen scaffolds up to 14 days. CONCLUSION The osteoinductive properties of BMP2 may further be enhanced by its combination with a novel synthetically fabricated osteoinductive BCP scaffold. Future clinical testing is required to further assess these preliminary findings.
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Affiliation(s)
- Yufeng Zhang
- Department of Oral Implantology, School of Stomatology, Wuhan University, Wuhan, China
| | - Shuang Yang
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) and Key Laboratory of Oral Biomedicine Ministry of Education, School and Hospital of Stomatology, Wuhan University, Wuhan, China
| | - Wei Zhou
- Hangzhou Jiuyuan Gene Engineering Co, Hangzhou, China
| | - Hang Fu
- Hangzhou Jiuyuan Gene Engineering Co, Hangzhou, China
| | - Li Qian
- Hangzhou Jiuyuan Gene Engineering Co, Hangzhou, China
| | - Richard J Miron
- Department of Periodontology, Department of Oral Surgery and Stomatology, School of Dental Medicine, University of Bern, Bern, Switzerland
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19
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Evaluation of Sustained BMP-2 Release Profiles Using a Novel Fluorescence-Based Retention Assay. PLoS One 2015; 10:e0123402. [PMID: 25901352 PMCID: PMC4406711 DOI: 10.1371/journal.pone.0123402] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2014] [Accepted: 02/18/2015] [Indexed: 11/22/2022] Open
Abstract
The purpose of this study was to develop and characterize a novel fluorescence-based retention assay for the evaluation of the release profile of bone morphogenetic protein-2 (BMP-2) released from bone graft carrier. In this study, we evaluated the binding, release kinetics, and delivery efficacies of BMP-2 incorporated into hydroxyapatite (HA) bone grafts. The evaluation of the release profile of BMP-2 from HA bone grafts using a fluorescence-based retention assay revealed initial burst releases from the HA bone grafts followed by long sustained releases up to 14 weeks. The sustained biological activity of the released BMP-2 from HA bone grafts over the full 14-week period supports a long sustained mechanism via fluorescence-based retention assay. Thus, the results from this study show that BMP-2 could be incorporated into HA bone grafts for sustained release over a prolonged period of time with retention of bioactivity and our fluorescence-based retention assay, which is principally detecting the retention profile of BMP-2 in HA bone grafts, is more accurate than conventionally collecting the released BMP-2 for evaluation of BMP-2 release profiles.
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20
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Wang S, Wang X, Draenert FG, Albert O, Schröder HC, Mailänder V, Mitov G, Müller WEG. Bioactive and biodegradable silica biomaterial for bone regeneration. Bone 2014; 67:292-304. [PMID: 25088401 DOI: 10.1016/j.bone.2014.07.025] [Citation(s) in RCA: 68] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/15/2014] [Revised: 07/19/2014] [Accepted: 07/22/2014] [Indexed: 02/01/2023]
Abstract
Biosilica, a biocompatible, natural inorganic polymer that is formed by an enzymatic, silicatein-mediated reaction in siliceous sponges to build up their inorganic skeleton, has been shown to be morphogenetically active and to induce mineralization of human osteoblast-like cells (SaOS-2) in vitro. In the present study, we prepared beads (microspheres) by encapsulation of β-tricalcium phosphate [β-TCP], either alone (control) or supplemented with silica or silicatein, into the biodegradable copolymer poly(d,l-lactide-co-glycolide) [PLGA]. Under the conditions used, ≈5% β-TCP, ≈9% silica, and 0.32μg/mg of silicatein were entrapped into the PLGA microspheres (diameter≈800μm). Determination of the biocompatibility of the β-TCP microspheres, supplemented with silica or silicatein, revealed no toxicity in the MTT based cell viability assay using SaOS-2 cells. The adherence of SaOS-2 cells to the surface of silica-containing microspheres was higher than for microspheres, containing only β-TCP. In addition, the silica-containing β-TCP microspheres and even more pronounced, a 1:1 mixture of microspheres containing β-TCP and silica, and β-TCP and silicatein, were found to strongly enhance the mineral deposition by SaOS-2 cells. Using these microspheres, first animal experiments with silica/biosilica were performed in female, adult New Zealand White rabbits to study the effect of the inorganic polymer on bone regeneration in vivo. The microspheres were implanted into 5mm thick holes, drilled into the femur of the animals, applying a bilateral comparison study design (3 test groups with 4-8 animals each). The control implant on one of the two hind legs contained microspheres with only β-TCP, while the test implant on the corresponding leg consisted either of microspheres containing β-TCP and silica, or a 1:1 mixture of microspheres, supplemented with β-TCP and silica, and β-TCP and silicatein. The results revealed that tissue/bone sections of silica containing implants and implants, composed of a 1:1 mixture of silica-containing microspheres and silicatein-containing microspheres, show an enhanced regeneration of bone tissue around the microspheres, compared to the control implants containing only β-TCP. The formation of new bone induced by the microspheres is also evident from measurements of the stiffness/reduced Young's modulus of the regenerated bone tissue. The reduced Young's modulus of the regenerating bone tissue around the implants was markedly higher for the silica-containing microspheres (1.1MPa), and even more for the 1:1 mixture of the silica- and silicatein-containing microspheres (1.4MPa), compared to the β-TCP microsphere controls (0.4MPa). We propose that based on their morphogenetic activity on bone-forming cells in vitro and the results of the animal experiments presented here, silica/biosilica-based scaffolds are promising materials for bone repair/regeneration.
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Affiliation(s)
- Shunfeng Wang
- ERC Advanced Investigator Grant Research Group at the Institute for Physiological Chemistry, University Medical Center of the Johannes Gutenberg University, Duesbergweg 6, D-55128 Mainz, Germany
| | - Xiaohong Wang
- ERC Advanced Investigator Grant Research Group at the Institute for Physiological Chemistry, University Medical Center of the Johannes Gutenberg University, Duesbergweg 6, D-55128 Mainz, Germany; National Research Center for Geoanalysis, Chinese Academy of Geological Sciences, 26 Baiwanzhuang Dajie, CN-Beijing 100037, China.
| | - Florian G Draenert
- Clinic for Oral & Maxillofacial Surgery, University of Marburg, Baldingerstr., D-35033 Marburg, Germany
| | - Olga Albert
- ERC Advanced Investigator Grant Research Group at the Institute for Physiological Chemistry, University Medical Center of the Johannes Gutenberg University, Duesbergweg 6, D-55128 Mainz, Germany
| | - Heinz C Schröder
- ERC Advanced Investigator Grant Research Group at the Institute for Physiological Chemistry, University Medical Center of the Johannes Gutenberg University, Duesbergweg 6, D-55128 Mainz, Germany
| | - Volker Mailänder
- Max Planck Institute for Polymer Research, Ackermannweg 10, D-55129 Mainz, Germany; Medical Clinic, University Medical Center, Johannes Gutenberg University, Langenbeckstr. 1, D-55131 Mainz, Germany
| | - Gergo Mitov
- Department of Medical Microbiology, Medical University Medical Faculty, Zdrave 2 str., BG-1431 Sofia, Bulgaria
| | - Werner E G Müller
- ERC Advanced Investigator Grant Research Group at the Institute for Physiological Chemistry, University Medical Center of the Johannes Gutenberg University, Duesbergweg 6, D-55128 Mainz, Germany.
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