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He S, Hu R, Yao X, Cui J, Liu H, Zhu M, Ning L. The effects of heat and hydrogen peroxide treatment on the osteoinductivity of demineralized cortical bone: a potential method for preparing tendon/ligament repair scaffolds. Regen Biomater 2024; 11:rbae116. [PMID: 39398284 PMCID: PMC11471265 DOI: 10.1093/rb/rbae116] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2024] [Revised: 08/12/2024] [Accepted: 09/07/2024] [Indexed: 10/15/2024] Open
Abstract
Recent studies have indicated that demineralized cortical bone (DCB) may be used to repair tendons and ligaments, such as the patellar tendon and anterior cruciate ligament (ACL). Hydrogen peroxide (H2O2) has been shown to reduce the osteoinductivity of DCB, and heat treatment may also decrease the osteoinductivity of DCB. The purpose of this study was (i) to determine whether heat treatment reduces the osteoinductivity of DCB and (ii) to compare the effectiveness of heat treatment and H2O2 treatment on BMP-2 inactivation. DCB was prepared by immersion in 0.6 N hydrochloric acid, and DCB-H and DCB-HO were prepared by heat treatment (70°C for 8 h) and H2O2 treatment (3% H2O2 for 8 h), respectively. The surface topographies, elemental distributions and histological structures of the scaffolds were observed by scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FT-IR) and histological staining. The viability and osteogenic differentiation of TDSCs cultured on the scaffolds were evaluated via live/dead cell staining and Cell Counting Kit-8 (CCK-8) testing, real-time polymerase chain reaction (RT-PCR) and western bolt (WB) analysis, alkaline phosphatase activity (ALP) and alizarin red S (ARS) staining. The intramuscular implantation of the scaffolds in rats was also used to evaluate the effect of heat treatment and H2O2 treatment on the osteoinductivity of DCB. Our results demonstrated that both treatments removed BMP-2 and osteocalcin (OCN) within the DCB and that DCB-H and DCB-HO had good cytocompatibility and reduced the osteogenic differentiation of TDSCs. Moreover, the in vivo results indicated that the DCB-H and DCB-HO groups had smaller areas of osteoid formation than did the DCB group, and the DCB-HO group had the smallest area among the three groups. Our study demonstrated that heat treatment could reduce the osteoinductivity of DCB, and that H2O2 treatment was more effective than heat treatment.
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Affiliation(s)
- Shukun He
- Department of Orthopedic Surgery and Orthopedic Research Institute, Stem Cell and Tissue Engineering Research Center, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041, China
- Department of Orthopedics, First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, 310058, China
| | - Ruonan Hu
- Department of Orthopedic Surgery and Orthopedic Research Institute, Stem Cell and Tissue Engineering Research Center, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Xuan Yao
- Department of Clinical Hematology, Faculty of Laboratory Medicine, Army Medical University, Chongqing, 400038, China
| | - Jing Cui
- Department of Orthopedic Surgery and Orthopedic Research Institute, Stem Cell and Tissue Engineering Research Center, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Huimin Liu
- Department of Orthopedic Surgery and Orthopedic Research Institute, Stem Cell and Tissue Engineering Research Center, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Min Zhu
- Department of Orthopedic Surgery and Orthopedic Research Institute, Stem Cell and Tissue Engineering Research Center, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Liangju Ning
- Department of Orthopedic Surgery and Orthopedic Research Institute, Stem Cell and Tissue Engineering Research Center, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041, China
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Dang AT, Ono M, Wang Z, Tosa I, Hara ES, Mikai A, Kitagawa W, Yonezawa T, Kuboki T, Oohashi T. Local E-rhBMP-2/β-TCP Application Rescues Osteocyte Dendritic Integrity and Reduces Microstructural Damage in Alveolar Bone Post-Extraction in MRONJ-like Mouse Model. Int J Mol Sci 2024; 25:6648. [PMID: 38928355 PMCID: PMC11203997 DOI: 10.3390/ijms25126648] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2024] [Revised: 05/27/2024] [Accepted: 05/30/2024] [Indexed: 06/28/2024] Open
Abstract
The pathology of medication-related osteonecrosis of the jaw (MRONJ), often associated with antiresorptive therapy, is still not fully understood. Osteocyte networks are known to play a critical role in maintaining bone homeostasis and repair, but the exact condition of these networks in MRONJ is unknown. On the other hand, the local application of E-coli-derived Recombinant Human Bone Morphogenetic Protein 2/β-Tricalcium phosphate (E-rhBMP-2/β-TCP) has been shown to promote bone regeneration and mitigate osteonecrosis in MRONJ-like mouse models, indicating its potential therapeutic application for the treatment of MRONJ. However, the detailed effect of BMP-2 treatment on restoring bone integrity, including its osteocyte network, in an MRONJ condition remains unclear. Therefore, in the present study, by applying a scanning electron microscope (SEM) analysis and a 3D osteocyte network reconstruction workflow on the alveolar bone surrounding the tooth extraction socket of an MRONJ-like mouse model, we examined the effectiveness of BMP-2/β-TCP therapy on the alleviation of MRONJ-related bone necrosis with a particular focus on the osteocyte network and alveolar bone microstructure (microcrack accumulation). The 3D osteocyte dendritic analysis showed a significant decrease in osteocyte dendritic parameters along with a delay in bone remodeling in the MRONJ group compared to the healthy counterpart. The SEM analysis also revealed a notable increase in the number of microcracks in the alveolar bone surface in the MRONJ group compared to the healthy group. In contrast, all of those parameters were restored in the E-rhBMP-2/β-TCP-treated group to levels that were almost similar to those in the healthy group. In summary, our study reveals that MRONJ induces osteocyte network degradation and microcrack accumulation, while application of E-rhBMP-2/β-TCP can restore a compromised osteocyte network and abrogate microcrack accumulation in MRONJ.
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Affiliation(s)
- Anh Tuan Dang
- Department of Molecular Biology and Biochemistry, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama 700-8558, Japan; (A.T.D.); (Z.W.); (A.M.); (W.K.); (T.Y.); (T.O.)
- Department of Oral Rehabilitation and Regenerative Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama 700-8525, Japan; (I.T.); (T.K.)
| | - Mitsuaki Ono
- Department of Molecular Biology and Biochemistry, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama 700-8558, Japan; (A.T.D.); (Z.W.); (A.M.); (W.K.); (T.Y.); (T.O.)
- Department of Oral Rehabilitation and Implantology, Okayama University Hospital, Okayama 700-8558, Japan
| | - Ziyi Wang
- Department of Molecular Biology and Biochemistry, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama 700-8558, Japan; (A.T.D.); (Z.W.); (A.M.); (W.K.); (T.Y.); (T.O.)
| | - Ikue Tosa
- Department of Oral Rehabilitation and Regenerative Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama 700-8525, Japan; (I.T.); (T.K.)
- Cartilage Biology and Regenerative Medicine Laboratory, Section of Growth and Development, Division of Orthodontics, College of Dental Medicine, Columbia University Irving Medical Center, New York, NY 10032, USA
| | - Emilio Satoshi Hara
- Advanced Research Center for Oral and Craniofacial Sciences, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama 700-8558, Japan;
| | - Akihiro Mikai
- Department of Molecular Biology and Biochemistry, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama 700-8558, Japan; (A.T.D.); (Z.W.); (A.M.); (W.K.); (T.Y.); (T.O.)
| | - Wakana Kitagawa
- Department of Molecular Biology and Biochemistry, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama 700-8558, Japan; (A.T.D.); (Z.W.); (A.M.); (W.K.); (T.Y.); (T.O.)
- Department of Oral Rehabilitation and Regenerative Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama 700-8525, Japan; (I.T.); (T.K.)
| | - Tomoko Yonezawa
- Department of Molecular Biology and Biochemistry, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama 700-8558, Japan; (A.T.D.); (Z.W.); (A.M.); (W.K.); (T.Y.); (T.O.)
| | - Takuo Kuboki
- Department of Oral Rehabilitation and Regenerative Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama 700-8525, Japan; (I.T.); (T.K.)
- Department of Oral Rehabilitation and Implantology, Okayama University Hospital, Okayama 700-8558, Japan
| | - Toshitaka Oohashi
- Department of Molecular Biology and Biochemistry, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama 700-8558, Japan; (A.T.D.); (Z.W.); (A.M.); (W.K.); (T.Y.); (T.O.)
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Kim YH, Lee JS, Ha KY, Kim SI, Jung HY, Kim GU, Joh Y, Park HY. Application of Escherichia coli-Derived Recombinant Human Bone Morphogenic Protein-2 to Unstable Spinal Fractures. Bioengineering (Basel) 2023; 10:1114. [PMID: 37892844 PMCID: PMC10604299 DOI: 10.3390/bioengineering10101114] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2023] [Revised: 09/13/2023] [Accepted: 09/21/2023] [Indexed: 10/29/2023] Open
Abstract
(1) Background: Recently, Escherichia coli-derived recombinant human bone morphogenetic protein-2 (E. coli-derived rhBMP-2) has been increasingly applied to different types of spinal surgeries and reported to achieve successful fusion. This pilot study aimed to evaluate the clinical efficacy and safety of rhBMP-2 in patients undergoing posterior instrumented fusions for unstable spinal fractures. (2) Methods: This study included ten consecutive patients undergoing spinal surgery using E. coli-derived rhBMP-2 with more than one year of follow-up. Radiologic outcomes were compared, including the average fracture healing period, local kyphosis correction, and clinical outcomes between preoperative and the last follow-up. (3) Results: The average time of radiographic union was 99.9 ± 45.4 (62-192) days, with an average use of 5.2 ± 3.9 months of anabolic agents. Radiologic parameters such as anterior vertebral height and vertebral wedge angle were significantly corrected postoperatively and at the last follow-up. Clinical outcomes other than leg pain were significantly improved after the surgery. In addition, four patients with preoperative neurologic deficits showed improved neurologic status. (4) Conclusions: Combined with the anabolic agents, applying E. coli-derived rhBMP-2 to the fractured vertebral body could be an effective surgical treatment for unstable spinal fractures. Further trials are needed to validate this result.
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Affiliation(s)
- Young-Hoon Kim
- Department of Orthopedic Surgery, Seoul St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul 06591, Republic of Korea; (Y.-H.K.)
| | - Jun-Seok Lee
- Department of Orthopedic Surgery, Eunpyeong St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul 03312, Republic of Korea
| | - Kee-Yong Ha
- Department of Orthopedic Surgery, Kyung Hee University Hospital at Gangdong, Seoul 05278, Republic of Korea
| | - Sang-Il Kim
- Department of Orthopedic Surgery, Seoul St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul 06591, Republic of Korea; (Y.-H.K.)
| | - Ho-Young Jung
- Department of Orthopedic Surgery, Eunpyeong St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul 03312, Republic of Korea
| | - Geon-U Kim
- Department of Orthopedic Surgery, Eunpyeong St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul 03312, Republic of Korea
| | - Yongwon Joh
- Department of Orthopedic Surgery, Eunpyeong St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul 03312, Republic of Korea
| | - Hyung-Youl Park
- Department of Orthopedic Surgery, Eunpyeong St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul 03312, Republic of Korea
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On SW, Park SY, Yi SM, Park IY, Byun SH, Yang BE. Current Status of Recombinant Human Bone Morphogenetic Protein-2 (rhBMP-2) in Maxillofacial Surgery: Should It Be Continued? Bioengineering (Basel) 2023; 10:1005. [PMID: 37760107 PMCID: PMC10525581 DOI: 10.3390/bioengineering10091005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2023] [Revised: 08/18/2023] [Accepted: 08/22/2023] [Indexed: 09/29/2023] Open
Abstract
Recombinant human bone morphogenetic protein-2 (rhBMP-2) has shown potential in maxillofacial surgery owing to its osteoinductive properties. However, concerns about its safety and high cost have limited its widespread use. This review presents the status of rhBMP-2 use in maxillofacial surgery, focusing on its clinical application, efficacy, safety, and limitations. Studies have demonstrated rhBMP-2's potential to reduce donor site morbidity and increase bone height in sinus and ridge augmentation; however, it may not outperform autogenous bone grafts. In medication-related osteonecrosis of the jaw treatment, rhBMP-2 has been applied adjunctively with promising results, although its long-term safety requires further investigation. However, in maxillofacial trauma, its application is limited to the restoration of large defects. Safety concerns include postoperative edema and the theoretical risk of carcinogenesis. Although postoperative edema is manageable, the link between rhBMP-2 and cancer remains unclear. The limitations include the lack of an ideal carrier, the high cost of rhBMP-2, and the absence of an optimal dosing regimen. In conclusion, rhBMP-2 is a promising graft material for maxillofacial surgery. However, it has not yet become the gold standard owing to safety and cost concerns. Further research is required to establish long-term safety, optimize dosing, and develop better carriers.
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Affiliation(s)
- Sung-Woon On
- Division of Oral and Maxillofacial Surgery, Department of Dentistry, Dongtan Sacred Heart Hospital, Hallym University College of Medicine, Hwaseong 18450, Republic of Korea;
- Department of Artificial Intelligence and Robotics in Dentistry, Graduated School of Clinical Dentistry, Hallym University, Chuncheon 24252, Republic of Korea; (S.-Y.P.); (S.-M.Y.); (I.-Y.P.); (S.-H.B.)
- Institute of Clinical Dentistry, Hallym University, Chuncheon 24252, Republic of Korea
| | - Sang-Yoon Park
- Department of Artificial Intelligence and Robotics in Dentistry, Graduated School of Clinical Dentistry, Hallym University, Chuncheon 24252, Republic of Korea; (S.-Y.P.); (S.-M.Y.); (I.-Y.P.); (S.-H.B.)
- Institute of Clinical Dentistry, Hallym University, Chuncheon 24252, Republic of Korea
- Department of Oral and Maxillofacial Surgery, Hallym University Sacred Heart Hospital, Anyang 14066, Republic of Korea
- Dental Artificial Intelligence and Robotics R&D Center, Hallym University Sacred Heart Hospital, Anyang 14066, Republic of Korea
| | - Sang-Min Yi
- Department of Artificial Intelligence and Robotics in Dentistry, Graduated School of Clinical Dentistry, Hallym University, Chuncheon 24252, Republic of Korea; (S.-Y.P.); (S.-M.Y.); (I.-Y.P.); (S.-H.B.)
- Institute of Clinical Dentistry, Hallym University, Chuncheon 24252, Republic of Korea
- Department of Oral and Maxillofacial Surgery, Hallym University Sacred Heart Hospital, Anyang 14066, Republic of Korea
- Dental Artificial Intelligence and Robotics R&D Center, Hallym University Sacred Heart Hospital, Anyang 14066, Republic of Korea
| | - In-Young Park
- Department of Artificial Intelligence and Robotics in Dentistry, Graduated School of Clinical Dentistry, Hallym University, Chuncheon 24252, Republic of Korea; (S.-Y.P.); (S.-M.Y.); (I.-Y.P.); (S.-H.B.)
- Institute of Clinical Dentistry, Hallym University, Chuncheon 24252, Republic of Korea
- Dental Artificial Intelligence and Robotics R&D Center, Hallym University Sacred Heart Hospital, Anyang 14066, Republic of Korea
- Department of Orthodontics, Hallym University Sacred Heart Hospital, Anyang 14066, Republic of Korea
| | - Soo-Hwan Byun
- Department of Artificial Intelligence and Robotics in Dentistry, Graduated School of Clinical Dentistry, Hallym University, Chuncheon 24252, Republic of Korea; (S.-Y.P.); (S.-M.Y.); (I.-Y.P.); (S.-H.B.)
- Institute of Clinical Dentistry, Hallym University, Chuncheon 24252, Republic of Korea
- Department of Oral and Maxillofacial Surgery, Hallym University Sacred Heart Hospital, Anyang 14066, Republic of Korea
- Dental Artificial Intelligence and Robotics R&D Center, Hallym University Sacred Heart Hospital, Anyang 14066, Republic of Korea
| | - Byoung-Eun Yang
- Department of Artificial Intelligence and Robotics in Dentistry, Graduated School of Clinical Dentistry, Hallym University, Chuncheon 24252, Republic of Korea; (S.-Y.P.); (S.-M.Y.); (I.-Y.P.); (S.-H.B.)
- Institute of Clinical Dentistry, Hallym University, Chuncheon 24252, Republic of Korea
- Department of Oral and Maxillofacial Surgery, Hallym University Sacred Heart Hospital, Anyang 14066, Republic of Korea
- Dental Artificial Intelligence and Robotics R&D Center, Hallym University Sacred Heart Hospital, Anyang 14066, Republic of Korea
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Concentration-Dependent Efficacy of Recombinant Human Bone Morphogenetic Protein-2 Using a HA/β-TCP Hydrogel Carrier in a Mini-Pig Vertebral Oblique Lateral Interbody Fusion Model. Int J Mol Sci 2023; 24:ijms24010892. [PMID: 36614335 PMCID: PMC9821164 DOI: 10.3390/ijms24010892] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2022] [Revised: 12/28/2022] [Accepted: 12/30/2022] [Indexed: 01/06/2023] Open
Abstract
Bone morphogenetic protein-2 (BMP-2) is used in the treatment of degenerative spinal disease and vertebral fractures, spine fusion, dental surgery, and facial surgery. However, high doses are associated with side effects such as inflammation and osteophytes. In this study, we performed spinal fusion surgery on mini-pigs using BMP-2 and a HA/β-TCP hydrogel carrier, and evaluated the degree of fusion and osteophyte growth according to time and dosage. Increasing the dose of BMP-2 led to a significantly higher fusion rate than was observed in the control group, and there was no significant difference between the 8-week and 16-week samples. We also found that the HA + β-TCP hydrogel combination helped maintain the rate of BMP-2 release. In conclusion, the BMP-2-loaded HA/β-TCP hydrogel carrier used in this study overcame the drawback of potentially causing side effects when used at high concentrations by enabling the sustained release of BMP-2. This method is also highly efficient, since it provides mineral matter to accelerate the fusion rate of the spine and improve bone quality.
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Choi JY, Park HJ, Park SM, Kang CN, Song KS. Evaluation of the efficacy and safety of Escherichia coli-derived recombinant human bone morphogenetic protein-2 in transforaminal lumbar interbody fusion to treat degenerative spinal disease: a protocol of prospective, randomized controlled, assessor-blinded, open-label, multicenter trial. J Orthop Surg Res 2022; 17:397. [PMID: 36045371 PMCID: PMC9429459 DOI: 10.1186/s13018-022-03289-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/30/2022] [Accepted: 08/14/2022] [Indexed: 11/10/2022] Open
Abstract
Background Recombinant human bone morphogenetic protein-2 (rhBMP-2) has been widely used as an alternative bone graft in spine fusion surgery. However, clinical outcome such as effects and complications has not yet been revealed for transforaminal lumbar interbody fusion (TLIF). Although previous studies have reported some results, the evidence is weak. Therefore, the purpose of this trial is to evaluate the effectiveness and safety of Escherichia coli-derived rhBMP-2 combined with hydroxyapatite (HA) in TLIF. Methods This trial is designed as a prospective, assessor-blinded, open-label, multicenter, randomized controlled study. Participants will be recruited from six tertiary teaching hospitals. All randomized participants will be undergoing one- or two-level TLIF with rhBMP-2 (77 participants) as the active experimental group or with an auto-iliac bone graft (77 participants) as the control group. The primary interbody fusion rate outcome will be evaluated using computed tomography (CT) 12 months after surgery. The secondary outcomes will be as follows: clinical outcomes (visual analog scale score, EuroQol-5-dimensions-5-level score, Oswestry Disability Index score, and some surgery-related variables) and adverse effects (radiculitis, heterotrophic ossification, endplate resorption, and osteolysis). Radiological outcomes will be evaluated using simple radiography or CT. All outcomes will be measured, collected, and evaluated before surgery and at 12, 24, and 52 weeks postoperatively.
Discussion This study will be the primary of its kind to evaluate the effectiveness and safety of E. coli-derived rhBMP-2 with HA in one- or two-level TLIF. It is designed to evaluate the equivalence of the results between rhBMP-2 with HA and auto-iliac bone graft using an appropriate sample size, assessor-blinded analyses, and prospective registration to avoid bias. This study will set up clear conclusions for using E. coli-derived rhBMP-2 with HA in TLIF. Trial registration: This study protocol was registered at Korea Clinical Research Information Service (https://cris.nih.go.kr; number identifier: KCT0005610) on 19 November 2020. And protocol version is v1.1, January 2022.
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Affiliation(s)
- Jun-Young Choi
- Spine Center and Department of Orthopaedic Surgery, Seoul National University College of Medicine and Seoul National University Bundang Hospital, 82, Gumi-ro 173 Beon-gil, Bundang-gu, Seongnam-si, Gyeonggi-do 13620, Seongnam, Republic of Korea
| | - Hyun-Jin Park
- Department of Orthopedic Surgery, Spine Center, Kangnam Sacred Heart Hospital, Hallym University College of Medicine, Seoul, Korea
| | - Sang-Min Park
- Spine Center and Department of Orthopaedic Surgery, Seoul National University College of Medicine and Seoul National University Bundang Hospital, 82, Gumi-ro 173 Beon-gil, Bundang-gu, Seongnam-si, Gyeonggi-do 13620, Seongnam, Republic of Korea.
| | - Chang-Nam Kang
- Department of Orthopedic Surgery, Hanyang University College of Medicine, Seoul, Republic of Korea
| | - Kwang-Sup Song
- Department of Orthopedic Surgery, Chung-Ang University College of Medicine, Seoul, Republic of Korea
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Kim NH, Jung SK, Lee J, Chang PS, Kang SH. Modulation of osteogenic differentiation by Escherichia coli-derived recombinant bone morphogenetic protein-2. AMB Express 2022; 12:106. [PMID: 35947236 PMCID: PMC9365917 DOI: 10.1186/s13568-022-01443-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2022] [Accepted: 07/28/2022] [Indexed: 11/10/2022] Open
Abstract
Recombinant human bone morphogenetic protein-2 (rhBMP-2), a key regulator of osteogenesis, induces the differentiation of mesenchymal cells into cartilage or bone tissues. Early orthopedic and dental studies often used mammalian cell-derived rhBMP-2, especially Chinese hamster ovary (CHO) cells. However, CHO cell-derived rhBMP-2 (C-rhBMP-2) presents disadvantages such as high cost and low production yield. To overcome these problems, Escherichia coli-derived BMP-2 (E-rhBMP-2) was developed; however, the E-rhBMP-2-induced signaling pathways and gene expression profiles during osteogenesis remain unclear. Here, we investigated the E-rhBMP-2-induced osteogenic differentiation pattern in C2C12 cells and elucidated the difference in biological characteristics between E-rhBMP-2 and C-rhBMP-2 via surface plasmon resonance, western blotting, qRT-PCR, RNA-seq, and alkaline phosphatase assays. The binding affinities of E-rhBMP-2 and C-rhBMP-2 towards BMP receptors were similar, both being confirmed at the nanomolecular level. However, the phosphorylation of Smad1/5/9 at 3 h after treatment with E-rhBMP-2 was significantly lower than that on treatment with C-rhBMP-2. The expression profiles of osteogenic marker genes were similar in both the E-rhBMP-2 and C-rhBMP-2 groups, but the gene expression level in the E-rhBMP-2 group was lower than that in the C-rhBMP-2 group at each time point. Taken together, our results suggest that the osteogenic signaling pathways induced by E-rhBMP-2 and C-rhBMP-2 both follow the general Smad-signaling pathway, but the difference in intracellular phosphorylation intensity results in distinguishable transcription profiles on osteogenic marker genes and biological activities of each rhBMP-2. These findings provide an extensive understanding of the biological properties of E-rhBMP-2 and the signaling pathways during osteogenic differentiation.
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Affiliation(s)
- Nam-Hyun Kim
- Life Science Institute, Daewoong Pharmaceutical, Yongin, Gyeonggido, Republic of Korea.,Department of Agricultural Biotechnology, Seoul National University, Seoul, Republic of Korea
| | - Seon-Kyong Jung
- Life Science Institute, Daewoong Pharmaceutical, Yongin, Gyeonggido, Republic of Korea
| | - Juno Lee
- Department of Agricultural Biotechnology, Seoul National University, Seoul, Republic of Korea
| | - Pahn-Shick Chang
- Department of Agricultural Biotechnology, Seoul National University, Seoul, Republic of Korea. .,Research Institute of Agriculture and Life Sciences, Seoul National University, Seoul, Republic of Korea. .,Center for Food and Bioconvergence, Seoul National University, Seoul, Republic of Korea. .,Center for Agricultural Microorganism and Enzyme, Seoul National University, Seoul, Republic of Korea.
| | - Seung-Hoon Kang
- Life Science Institute, Daewoong Pharmaceutical, Yongin, Gyeonggido, Republic of Korea.
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Oliveira JE, Suzuki MF, Damiani R, Lima ER, Amaral KC, Santos AMS, Magalhães GS, Faverani LP, Pereira LAVD, Bartolini P. Synthesis of Human Bone Morphogenetic Protein-2 (hBMP-2) in E. coli Periplasmic Space: Its Characterization and Preclinical Testing. Cells 2021; 10:3525. [PMID: 34944033 PMCID: PMC8699916 DOI: 10.3390/cells10123525] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2021] [Revised: 10/19/2021] [Accepted: 11/08/2021] [Indexed: 11/24/2022] Open
Abstract
Human BMP-2, a homodimeric protein that belongs to the TGF- β family, is a recognized osteoinductor due to its capacity of inducing bone regeneration and ectopic bone formation. The administration of its recombinant form is an alternative to autologous bone grafting. A variety of E. coli-derived hBMP-2 has been synthesized through refolding of cytoplasmic inclusion bodies. The present work reports the synthesis, purification, and characterization of periplasmic hBMP-2, obtained directly in its correctly folded and authentic form, i.e., without the initial methionine typical of the cytoplasmic product that can induce undesired immunoreactivity. A bacterial expression vector was constructed including the DsbA signal peptide and the cDNA of hBMP-2. The periplasmic fluid was extracted by osmotic shock and analyzed via SDS-PAGE, Western blotting, and reversed-phase high-performance liquid chromatography (RP-HPLC). The purification was carried out by heparin affinity chromatography, followed by high-performance size-exclusion chromatography (HPSEC). HPSEC was used for qualitative and quantitative analysis of the final product, which showed >95% purity. The classical in vitro bioassay based on the induction of alkaline phosphatase activity in myoblastic murine C2C12 cells and the in vivo bioassay consisting of treating calvarial critical-size defects in rats confirmed its bioactivity, which matched the analogous literature data for hBMP-2.
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Affiliation(s)
- João E. Oliveira
- Instituto de Pesquisas Energéticas e Nucleares, IPEN–CNEN, Av. Prof. Lineu Prestes 2242, São Paulo 05508-000, SP, Brazil; (J.E.O.); (M.F.S.); (K.C.A.)
| | - Miriam F. Suzuki
- Instituto de Pesquisas Energéticas e Nucleares, IPEN–CNEN, Av. Prof. Lineu Prestes 2242, São Paulo 05508-000, SP, Brazil; (J.E.O.); (M.F.S.); (K.C.A.)
| | - Renata Damiani
- Biosintesis P & D, São Paulo 05508-000, SP, Brazil; (R.D.); (E.R.L.)
| | - Eliana R. Lima
- Biosintesis P & D, São Paulo 05508-000, SP, Brazil; (R.D.); (E.R.L.)
| | - Kleicy C. Amaral
- Instituto de Pesquisas Energéticas e Nucleares, IPEN–CNEN, Av. Prof. Lineu Prestes 2242, São Paulo 05508-000, SP, Brazil; (J.E.O.); (M.F.S.); (K.C.A.)
| | - Anderson M. S. Santos
- Department of Diagnosis and Surgery, School of Dentistry, Sao Paulo State University, UNESP, Araçatuba 16015-050, SP, Brazil; (A.M.S.S.); (L.P.F.)
| | - Geraldo S. Magalhães
- Immunopathology Laboratory, Instituto Butantan, São Paulo 05503-900, SP, Brazil;
| | - Leonardo P. Faverani
- Department of Diagnosis and Surgery, School of Dentistry, Sao Paulo State University, UNESP, Araçatuba 16015-050, SP, Brazil; (A.M.S.S.); (L.P.F.)
| | - Luís A. V. D. Pereira
- Department of Biochemistry and Tissue Biology, Institute of Biology, State University of Campinas, UNICAMP, Campinas 13083-970, SP, Brazil;
| | - Paolo Bartolini
- Instituto de Pesquisas Energéticas e Nucleares, IPEN–CNEN, Av. Prof. Lineu Prestes 2242, São Paulo 05508-000, SP, Brazil; (J.E.O.); (M.F.S.); (K.C.A.)
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9
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Tanaka Y, Aung KT, Ono M, Mikai A, Dang AT, Hara ES, Tosa I, Ishibashi K, Ono-Kimura A, Nawachi K, Kuboki T, Oohashi T. Suppression of Bone Necrosis around Tooth Extraction Socket in a MRONJ-like Mouse Model by E-rhBMP-2 Containing Artificial Bone Graft Administration. Int J Mol Sci 2021; 22:ijms222312823. [PMID: 34884630 PMCID: PMC8657653 DOI: 10.3390/ijms222312823] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2021] [Revised: 11/23/2021] [Accepted: 11/23/2021] [Indexed: 11/30/2022] Open
Abstract
Medication-related osteonecrosis of the jaw (MRONJ) is related to impaired bone healing conditions in the maxillomandibular bone region as a complication of bisphosphonate intake. Although there are several hypotheses for the onset of MRONJ symptoms, one of the possible causes is the inhibition of bone turnover and blood supply leading to bone necrosis. The optimal treatment strategy for MRONJ has not been established either. BMP-2, a member of the TGF-β superfamily, is well known for regulating bone remodeling and homeostasis prenatally and postnatally. Therefore, the objectives of this study were to evaluate whether cyclophosphamide/zoledronate (CY/ZA) induces necrosis of the bone surrounding the tooth extraction socket, and to examine the therapeutic potential of BMP-2 in combination with the hard osteoinductive biomaterial, β-tricalcium phosphate (β-TCP), in the prevention and treatment of alveolar bone loss around the tooth extraction socket in MRONJ-like mice models. First, CY/ZA was intraperitoneally administered for three weeks, and alveolar bone necrosis was evaluated before and after tooth extraction. Next, the effect of BMP-2/β-TCP was investigated in both MRONJ-like prevention and treatment models. In the prevention model, CY/ZA was continuously administered for four weeks after BMP-2/β-TCP transplantation. In the treatment model, CY/ZA administration was suspended after transplantation of BMP-2/β-TCP. The results showed that CY/ZA induced a significant decrease in the number of empty lacunae, a sign of bone necrosis, in the alveolar bone around the tooth extraction socket after tooth extraction. Histological analysis showed a significant decrease in the necrotic alveolar bone around tooth extraction sockets in the BMP-2/β-TCP transplantation group compared to the non-transplanted control group in both MRONJ-like prevention and treatment models. However, bone mineral density, determined by micro-CT analysis, was significantly higher in the BMP-2/β-TCP transplanted group than in the control group in the prevention model only. These results clarified that alveolar bone necrosis around tooth extraction sockets can be induced after surgical intervention under CY/ZA administration. In addition, transplantation of BMP-2/β-TCP reduced the necrotic alveolar bone around the tooth extraction socket. Therefore, a combination of BMP-2/β-TCP could be an alternative approach for both prevention and treatment of MRONJ-like symptoms.
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Affiliation(s)
- Yukie Tanaka
- Department of Molecular Biology and Biochemistry, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama 700-8558, Japan; (Y.T.); (A.T.D.); (K.I.); (T.O.)
- Department of Oral Rehabilitation and Regenerative Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama 700-8558, Japan; (K.T.A.); (I.T.); (T.K.)
| | - Kyaw Thu Aung
- Department of Oral Rehabilitation and Regenerative Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama 700-8558, Japan; (K.T.A.); (I.T.); (T.K.)
| | - Mitsuaki Ono
- Department of Molecular Biology and Biochemistry, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama 700-8558, Japan; (Y.T.); (A.T.D.); (K.I.); (T.O.)
- Department of Oral Rehabilitation and Implantology, Okayama University Hospital, Okayama 700-8558, Japan; (A.M.); (A.O.-K.); (K.N.)
- Correspondence: ; Tel.: +81-86-235-7129; Fax: +81-86-222-7768
| | - Akihiro Mikai
- Department of Oral Rehabilitation and Implantology, Okayama University Hospital, Okayama 700-8558, Japan; (A.M.); (A.O.-K.); (K.N.)
| | - Anh Tuan Dang
- Department of Molecular Biology and Biochemistry, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama 700-8558, Japan; (Y.T.); (A.T.D.); (K.I.); (T.O.)
- Department of Oral Rehabilitation and Regenerative Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama 700-8558, Japan; (K.T.A.); (I.T.); (T.K.)
| | - Emilio Satoshi Hara
- Department of Biomaterials, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama 700-8558, Japan;
| | - Ikue Tosa
- Department of Oral Rehabilitation and Regenerative Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama 700-8558, Japan; (K.T.A.); (I.T.); (T.K.)
| | - Kei Ishibashi
- Department of Molecular Biology and Biochemistry, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama 700-8558, Japan; (Y.T.); (A.T.D.); (K.I.); (T.O.)
- Department of Oral Rehabilitation and Regenerative Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama 700-8558, Japan; (K.T.A.); (I.T.); (T.K.)
| | - Aya Ono-Kimura
- Department of Oral Rehabilitation and Implantology, Okayama University Hospital, Okayama 700-8558, Japan; (A.M.); (A.O.-K.); (K.N.)
- Center for Innovative Clinical Medicine, Okayama University Hospital, Okayama 700-8558, Japan
| | - Kumiko Nawachi
- Department of Oral Rehabilitation and Implantology, Okayama University Hospital, Okayama 700-8558, Japan; (A.M.); (A.O.-K.); (K.N.)
| | - Takuo Kuboki
- Department of Oral Rehabilitation and Regenerative Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama 700-8558, Japan; (K.T.A.); (I.T.); (T.K.)
- Department of Oral Rehabilitation and Implantology, Okayama University Hospital, Okayama 700-8558, Japan; (A.M.); (A.O.-K.); (K.N.)
| | - Toshitaka Oohashi
- Department of Molecular Biology and Biochemistry, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama 700-8558, Japan; (Y.T.); (A.T.D.); (K.I.); (T.O.)
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Nosho S, Ono M, Komori T, Mikai A, Tosa I, Ishibashi K, Tanaka Y, Kimura-Ono A, Hara ES, Oohashi T, Kuboki T. Preclinical bioequivalence study of E.coli-derived rhBMP-2/β-TCP and autogenous bone in a canine guided-bone regeneration model. J Prosthodont Res 2021; 66:124-130. [PMID: 34176850 DOI: 10.2186/jpr.jpr_d_20_00226] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
PURPOSE Bone morphogenetic protein (BMP)-2 is a potent growth factor that is widely used in the orthopedic and dental fields for bone regeneration.However, recombinant human BMP-2 (rhBMP-2) products have not been legally approved in Japan. Recently, our research group succeeded in producing GMP-grade rhBMP-2 using the E. coli system (E-rhBMP-2) at the industrial level and developed E-rhBMP-2 adsorbed onto β-TCP (E-rhBMP-2/β-TCP) as an alternative material to autogenous bone grafts. Previous studies on the toxicity, pharmacokinetics, and optimal doses of E-rhBMP-2 have confirmed its safety and efficiency. However, comparative studies with standard treatment therapies are still necessary before clinical application in humans. Therefore, in this preclinical study, we compared the bone regeneration ability of E-rhBMP-2/β-TCP and autogenous bone grafts in a canine guided-bone regeneration model. METHODS Following extraction of the maxillary third premolar, box-type bone defects (10 mmL × 4 mmW × 9 mmH) were created in the extraction socket area and transplanted with E-rhBMP-2/β-TCP or autogenous bone graft in a canine. After 8 weeks, micro-CT and histological analyses were performed. RESULTS Transplantation of both E-rhBMP-2/β-TCP and autogenous bone graft significantly promoted bone formation compared to the non-transplantation control group. The bone formation ability of E-rhBMP-2/β-TCP was equal to that of the autogenous bone graft. Histological analysis showed that excessive infiltration of inflammatory cells and residual β-TCP particles mostly were not observed in the E-rhBMP-2/β-TCP transplantation group. CONCLUSIONS This preclinical study demonstrated that E-rhBMP-2/β-TCP and autogenous bone have equal potential to promote bone regeneration.
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Affiliation(s)
- Shuji Nosho
- Department of Oral Rehabilitation and Regenerative Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama.,Department of Molecular Biology and Biochemistry, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama
| | - Mitsuaki Ono
- Department of Molecular Biology and Biochemistry, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama
| | - Taishi Komori
- Department of Oral Rehabilitation and Regenerative Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama
| | - Akihiro Mikai
- Department of Oral Rehabilitation and Regenerative Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama.,Department of Molecular Biology and Biochemistry, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama
| | - Ikue Tosa
- Department of Oral Rehabilitation and Regenerative Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama
| | - Kei Ishibashi
- Department of Oral Rehabilitation and Regenerative Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama.,Department of Molecular Biology and Biochemistry, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama
| | - Yukie Tanaka
- Department of Oral Rehabilitation and Regenerative Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama.,Department of Molecular Biology and Biochemistry, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama
| | - Aya Kimura-Ono
- Department of Oral Rehabilitation and Regenerative Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama.,Center for Innovative Clinical Medicine, Okayama University Hospital, Okayama
| | - Emilio S Hara
- Department of Biomaterials, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama
| | - Toshitaka Oohashi
- Department of Molecular Biology and Biochemistry, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama
| | - Takuo Kuboki
- Department of Oral Rehabilitation and Regenerative Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama
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11
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Ueyama H, Ohta Y, Imai Y, Suzuki A, Sugama R, Minoda Y, Takaoka K, Nakamura H. Topical co-administration of zoledronate with recombinant human bone morphogenetic protein-2 can induce and maintain bone formation in the bone marrow environment. BMC Musculoskelet Disord 2021; 22:94. [PMID: 33472600 PMCID: PMC7819170 DOI: 10.1186/s12891-021-03971-w] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/15/2020] [Accepted: 01/11/2021] [Indexed: 02/05/2023] Open
Abstract
Background Bone morphogenetic proteins (BMPs) induce osteogenesis in various environments. However, when BMPs are used alone in the bone marrow environment, the maintenance of new bone formation is difficult owing to vigorous bone resorption. This is because BMPs stimulate the differentiation of not only osteoblast precursor cells but also osteoclast precursor cells. The present study aimed to induce and maintain new bone formation using the topical co-administration of recombinant human BMP-2 (rh-BMP-2) and zoledronate (ZOL) on beta-tricalcium phosphate (β-TCP) composite. Methods β-TCP columns were impregnated with both rh-BMP-2 (30 µg) and ZOL (5 µg), rh-BMP-2 alone, or ZOL alone, and implanted into the left femur canal of New Zealand white rabbits (n = 56). The implanted β-TCP columns were harvested and evaluated at 3 and 6 weeks after implantation. These harvested β-TCP columns were evaluated radiologically using plane radiograph, and histologically using haematoxylin/eosin (H&E) and Masson’s trichrome (MT) staining. In addition, micro-computed tomography (CT) was performed for qualitative analysis of bone formation in each group (n = 7). Results Tissue sections stained with H&E and MT dyes revealed that new bone formation inside the β-TCP composite was significantly greater in those impregnated with both rh-BMP-2 and ZOL than in those from the other experimental groups at 3 and 6 weeks after implantations (p < 0.05). Micro-CT data also demonstrated that the bone volume and the bone mineral density inside the β-TCP columns were significantly greater in those impregnated with both rh-BMP-2 and ZOL than in those from the other experimental groups at 3 and 6 weeks after implantations (p < 0.05). Conclusions The topical co-administration of both rh-BMP-2 and ZOL on β-TCP composite promoted and maintained newly formed bone structure in the bone marrow environment.
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Affiliation(s)
- Hideki Ueyama
- Department of Orthopaedic Surgery, Osaka City University Graduate School of Medicine, 1-4-3 Asahimachi, Abeno-ku, 545-8585, Osaka, Japan
| | - Yoichi Ohta
- Department of Orthopaedic Surgery, Osaka City University Graduate School of Medicine, 1-4-3 Asahimachi, Abeno-ku, 545-8585, Osaka, Japan.
| | - Yuuki Imai
- Division of Integrative Pathophysiology, Proteo-Science Center, Graduate School of Medicine, Ehime University, 791-0295, Shitsukawa, Toon, Ehime, Japan
| | - Akinobu Suzuki
- Department of Orthopaedic Surgery, Osaka City University Graduate School of Medicine, 1-4-3 Asahimachi, Abeno-ku, 545-8585, Osaka, Japan
| | - Ryo Sugama
- Department of Orthopaedic Surgery, Osaka City University Graduate School of Medicine, 1-4-3 Asahimachi, Abeno-ku, 545-8585, Osaka, Japan
| | - Yukihide Minoda
- Department of Orthopaedic Surgery, Osaka City University Graduate School of Medicine, 1-4-3 Asahimachi, Abeno-ku, 545-8585, Osaka, Japan
| | - Kunio Takaoka
- Department of Orthopaedic Surgery, Osaka City University Graduate School of Medicine, 1-4-3 Asahimachi, Abeno-ku, 545-8585, Osaka, Japan
| | - Hiroaki Nakamura
- Department of Orthopaedic Surgery, Osaka City University Graduate School of Medicine, 1-4-3 Asahimachi, Abeno-ku, 545-8585, Osaka, Japan
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12
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Suzuki MF, Oliveira JE, Damiani R, Lima ER, Amaral KC, Santos AMDS, Magalhães GS, Faverani LP, Pereira LAVD, Silva FM, Bartolini P. Human bone morphogenetic protein-2 (hBMP-2) characterization by physical-chemical, immunological and biological assays. AMB Express 2020; 10:34. [PMID: 32067115 PMCID: PMC7026339 DOI: 10.1186/s13568-020-0964-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2019] [Accepted: 01/27/2020] [Indexed: 11/18/2022] Open
Abstract
Commercially available preparations of methionyl-human BMP-2 and CHO-derived hBMP-2, which belongs to the transforming growth factor β (TGF-β) superfamily, were used for a complete characterization. This protein is an extremely efficient osteoinductor that plays an important role during bone regeneration and embryonic development. Characterization was carried out via SDS-PAGE and Western blotting, followed by reversed-phase HPLC, size-exclusion HPLC and MALDI-TOF-MS. The classical in vitro bioassay, based on the induction of alkaline phosphatase activity in C2C12 cells, confirmed that hBMP-2 biological activity is mostly related to the dimeric form, being ~ 4-fold higher for the CHO-derived glycosylated form when compared with the E. coli counterpart. The E. coli-derived met-hBMP-2 has shown, by MALDI-TOF-MS, a large presence of the bioactive dimer. A more complex molecular mass (MM) distribution was found for the CHO-derived product, whose exact MM has never been reported because of its variable glycosylation. A method based on RP-HPLC was set up, allowing a quantitative and qualitative hBMP-2 determination even directly on ongoing culture media. Considering that hBMP-2 is highly unstable, presenting moreover an extremely high aggregate value, we believe that these data pave the way to a necessary characterization of this important factor when synthesized by DNA recombinant techniques in different types of hosts.
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13
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Stability and Biological Activity of E. coli Derived Soluble and Precipitated Bone Morphogenetic Protein-2. Pharm Res 2019; 36:184. [DOI: 10.1007/s11095-019-2705-5] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2018] [Accepted: 09/16/2019] [Indexed: 01/24/2023]
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14
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Supercritical fluid-assisted controllable fabrication of open and highly interconnected porous scaffolds for bone tissue engineering. SCIENCE CHINA-LIFE SCIENCES 2019; 62:1670-1682. [PMID: 31025172 DOI: 10.1007/s11427-018-9393-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/20/2018] [Accepted: 12/10/2018] [Indexed: 01/13/2023]
Abstract
Recently tremendous progress has been evidenced by the advancements in developing innovative three-dimensional (3D) scaffolds using various techniques for addressing the autogenous grafting of bone. In this work, we demonstrated the fabrication of porous polycaprolactone (PCL) scaffolds for osteogenic differentiation based on supercritical fluid-assisted hybrid processes of phase inversion and foaming. This eco-friendly process resulted in the highly porous biomimetic scaffolds with open and interconnected architectures. Initially, a 23 factorial experiment was designed for investigating the relative significance of various processing parameters and achieving better control over the porosity as well as the compressive mechanical properties of the scaffold. Then, single factor experiment was carried out to understand the effects of various processing parameters on the morphology of scaffolds. On the other hand, we encapsulated a growth factor, i.e., bone morphogenic protein-2 (BMP-2), as a model protein in these porous scaffolds for evaluating their osteogenic differentiation. In vitro investigations of growth factor loaded PCL scaffolds using bone marrow stromal cells (BMSCs) have shown that these growth factor-encumbered scaffolds were capable of differentiating the cells over the control experiments. Furthermore, the osteogenic differentiation was confirmed by measuring the cell proliferation, and alkaline phosphatase (ALP) activity, which were significantly higher demonstrating the active bone growth. Together, these results have suggested that the fabrication of growth factor-loaded porous scaffolds prepared by the eco-friendly hybrid processing efficiently promoted the osteogenic differentiation and may have a significant potential in bone tissue engineering.
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15
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Jin YZ, Zheng GB, Lee JH. Escherichia coli BMP-2 showed comparable osteoinductivity with Chinese hamster ovary derived BMP-2 with demineralized bone matrix as carrier. Growth Factors 2019; 37:85-94. [PMID: 30947586 DOI: 10.1080/08977194.2019.1596905] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
Escherichia coli bone morphogenetic protein-2 (ErhBMP-2) had a larger yield but less osteoinductivity than Chinese hamster ovary cell bone morphogenetic protein-2 (CrhBMP-2). Since the release profile of rhBMP-2 affects its osteoinductivity, an appropriate carrier could improve the effect of ErhBMP-2. Demineralized bone matrix (DBM) was one of the most widely used bone substitutes, but few studies evaluated the osteoinductivity of ErhBMP-2 while it was carried by DBM. Therefore, we compared the osteoinductivity of ErhBMP-2 with CrhBMP-2 with DBM as the carrier of each. In vitro results showed ErhBMP-2 had slightly less osteoinductivity than CrhBMP-2. However, with DBM as the carrier, ErhBMP-2 induced significantly more bone regeneration in rat calvaria defects. Therefore, ErhBMP-2 might have comparable osteoinductivity with CrhBMP-2 while carried by DBM.
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Affiliation(s)
- Yuan-Zhe Jin
- a Department of Orthopedic Surgery, College of Medicine, Seoul National University , Seoul , South Korea
| | - Guang-Bin Zheng
- b Department of Orthopaedics, Taizhou Hospial of Zhejiang Province , Zhejiang , China
| | - Jae Hyup Lee
- a Department of Orthopedic Surgery, College of Medicine, Seoul National University , Seoul , South Korea
- c Department of Orthopedic Surgery, SMG-SNU Boramae Medical Center , Seoul , South Korea
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16
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Nguyen HT, Ono M, Oida Y, Hara ES, Komori T, Akiyama K, Nguyen HTT, Aung KT, Pham HT, Tosa I, Takarada T, Matsuo K, Mizoguchi T, Oohashi T, Kuboki T. Bone Marrow Cells Inhibit BMP-2-Induced Osteoblast Activity in the Marrow Environment. J Bone Miner Res 2019; 34:327-332. [PMID: 30352125 DOI: 10.1002/jbmr.3598] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/16/2018] [Revised: 08/24/2018] [Accepted: 09/10/2018] [Indexed: 01/04/2023]
Abstract
Bone morphogenetic protein 2 (BMP-2) is widely known as a potent growth factor that promotes bone formation. However, an increasing number of studies have demonstrated side effects of BMP-2 therapy. A deeper understanding of the effect of BMP-2 on cells other than those involved directly in bone remodeling is of fundamental importance to promote a more effective delivery of BMP-2 to patients. In this study, we aimed to investigate the effect of BMP-2 in the marrow environment. First, BMP-2 adsorbed onto titanium implants was delivered at the tooth extraction socket (marrow-absent site) or in the mandible marrow of beagle dogs. BMP-2 could induce marked bone formation around the implant at the tooth extraction socket. Surprisingly, however, no bone formation was observed in the BMP-2-coated titanium implants inserted in the mandible marrow. In C57BL/6 mice, BMP-2 adsorbed in freeze-dried collagen pellets could induce bone formation in marrow-absent calvarial bone. However, similar to the canine model, BMP-2 could not induce bone formation in the femur marrow. Analysis of osteoblast differentiation using Col1a1(2.3)-GFP transgenic mice revealed a scarce number of osteoblasts in BMP-2-treated femurs, whereas in the control group, osteoblasts were abundant. Ablation of femur marrow recovered the BMP-2 ability to induce bone formation. In vitro experiments analyzing luciferase activity of C2C12 cells with the BMP-responsive element and alkaline phosphatase activity of MC3T3-E1 osteoblasts further revealed that bone marrow cells inhibit the BMP-2 effect on osteoblasts by direct cell-cell contact. Collectively, these results showed that the effect of BMP-2 in inducing bone formation is remarkably repressed by marrow cells via direct cell-cell contact with osteoblasts; this opens new perspectives on the clarification of the side-effects associated with BMP-2 application. © 2018 American Society for Bone and Mineral Research.
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Affiliation(s)
- Ha Thi Nguyen
- Department of Oral Rehabilitation and Regenerative Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan.,Department of Molecular Biology and Biochemistry, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Mitsuaki Ono
- Department of Molecular Biology and Biochemistry, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Yasutaka Oida
- Department of Oral Rehabilitation and Regenerative Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Emilio Satoshi Hara
- Department of Biomaterials, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Taishi Komori
- Department of Oral Rehabilitation and Regenerative Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Kentaro Akiyama
- Department of Oral Rehabilitation and Regenerative Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Ha Thi Thu Nguyen
- Department of Oral Rehabilitation and Regenerative Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Kyaw Thu Aung
- Department of Oral Rehabilitation and Regenerative Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Hai Thanh Pham
- Department of Oral Rehabilitation and Regenerative Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Ikue Tosa
- Department of Oral Rehabilitation and Regenerative Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan.,Department of Regenerative Science, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Takeshi Takarada
- Department of Regenerative Science, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Koichi Matsuo
- Laboratory of Cell and Tissue Biology, Keio University School of Medicine, Tokyo, Japan
| | | | - Toshitaka Oohashi
- Department of Molecular Biology and Biochemistry, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Takuo Kuboki
- Department of Oral Rehabilitation and Regenerative Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
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17
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Song W, Wang K, Wang W, Yang P, Dang X. Grafting, Stripping and Stapling of Helical Peptides from the Dimerization Interface of ONFH-Related Bone Morphogenetic Protein-2. Protein J 2019; 38:12-22. [DOI: 10.1007/s10930-018-9807-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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18
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Cho JH, Lee JH, Yeom JS, Chang BS, Yang JJ, Koo KH, Hwang CJ, Lee KB, Kim HJ, Lee CK, Kim H, Suk KS, Nam WD, Han J. Efficacy of Escherichia coli-derived recombinant human bone morphogenetic protein-2 in posterolateral lumbar fusion: an open, active-controlled, randomized, multicenter trial. Spine J 2017; 17:1866-1874. [PMID: 28652196 DOI: 10.1016/j.spinee.2017.06.023] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/07/2017] [Revised: 06/01/2017] [Accepted: 06/20/2017] [Indexed: 02/03/2023]
Abstract
BACKGROUND CONTEXT The efficacy and safety of recombinant human bone morphogenetic protein-2 (rhBMP-2) as a bone graft substitute in spinal fusion has been widely researched. However, no study of the efficacy and safety of Escherichia coli-derived rhBMP-2 (E.BMP-2) with a hydroxyapatite (HA) carrier has been proposed. PURPOSE This study aimed to compare the efficacy and safety of fusion materials between E.BMP-2 and autogenous iliac bone graft in posterolateral fusion (PLF). STUDY DESIGN/SETTING An open, active-controlled, randomized, multicenter trial was carried out. PATIENT SAMPLE This study included 93 patients who underwent single-level lumbar or lumbosacral PLF. OUTCOME MEASURES The primary outcome measure was computed tomography (CT)-based fusion rate at 12 and 24 weeks. Secondary outcome measures were fusion grade by radiographs and CT at 12 and 24 weeks and changes in Oswestry Disability Index (ODI), Short Form-36 (SF-36) Health Survey, and visual analogue scale (VAS). METHODS Patients who underwent 1-level PLF (between L1 and S1) for severe spinal stenosis or grade 1 spondylolisthesis were randomized to receive E.BMP-2 with an HA carrier (E.BMP-2 group) or autogenous iliac bone graft (AIBG group). Thin-section CT (<2 mm), VAS, ODI, and SF-36 were obtained pre- and postoperatively at 12 and 24 weeks. Outcome measures were compared between the groups. RESULTS A total of 100 patients were enrolled in this trial. Among them, 93 patients underwent planned surgery. Preoperative demographic and clinical data showed no difference between groups. CT-based fusion rates were 100.0% (41/41) for the E.BMP-2 group and 90.2% (46/51) for the AIBG group (p=.062) at 12 weeks and 100.0% (41/41) and 94.1% (48/51) (p=.251) at 24 weeks, respectively. Fusion grade based on radiographs and CT showed non-inferiority of the E.BMP-2 group compared with the AIBG group. All clinical parameters improved postoperatively. However, there was no difference in changes in VAS, ODI, or SF-36 between the groups. No serious adverse event related to E.BMP-2 was found. CONCLUSIONS The fusion rate of E.BMP-2 was comparable with that of AIBG following PLF. Good clinical efficacy and safety of E.BMP-2 in spinal fusion were also revealed. It was also suggested that HA shows suitability as a carrier for E.BMP-2. Thus, E.BMP-2 with an HA carrier can be an alternative bone graft material in spinal fusion.
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Affiliation(s)
- Jae Hwan Cho
- Department of Orthopedic Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, South Korea
| | - Jae Hyup Lee
- Department of Orthopedic Surgery, Seoul National University College of Medicine, SMG-SNU Boramae Medical Center, Seoul, South Korea.
| | - Jin Sup Yeom
- Spine Center and Department of Orthopaedic Surgery, Seoul National University College of Medicine, Seoul National University Bundang Hospital, Sungnam, South Korea
| | - Bong-Soon Chang
- Department of Orthopaedic Surgery, Seoul National University College of Medicine, Seoul National University Hospital, Seoul, South Korea
| | - Jae Jun Yang
- Department of Orthopedic Surgery, Dongguk University Ilsan Hospital, Dongguk University College of Medicine, Goyang, South Korea
| | - Ki Hyoung Koo
- Department of Orthopedic Surgery, Dongguk University Ilsan Hospital, Dongguk University College of Medicine, Goyang, South Korea
| | - Chang Ju Hwang
- Department of Orthopedic Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, South Korea
| | - Kwang Bok Lee
- Department of Orthopaedic Surgery, School of Medicine, Research Institute of Clinical Medicine of Chonbuk National University Hospital-Biomedical Research Institute of Chonbuk National University Hospital, Jeonju, South Korea
| | - Ho-Joong Kim
- Spine Center and Department of Orthopaedic Surgery, Seoul National University College of Medicine, Seoul National University Bundang Hospital, Sungnam, South Korea
| | - Choon-Ki Lee
- Department of Orthopaedic Surgery, Seoul National University College of Medicine, Seoul National University Hospital, Seoul, South Korea
| | - Hyoungmin Kim
- Department of Orthopaedic Surgery, Seoul National University College of Medicine, Seoul National University Hospital, Seoul, South Korea
| | - Kyung-Soo Suk
- Department of Orthopaedic Surgery, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, South Korea
| | - Woo Dong Nam
- Department of Orthopaedic Surgery, Kangwon National University Hospital, Kangwon National University School of Medicine, Chuncheon, South Korea
| | - Jumi Han
- Clinical Development Center, Daewoong Pharmaceutical Co., Ltd., Seoul, South Korea
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Velázquez-Cayón R, Castillo-Dalí G, Corcuera-Flores JR, Serrera-Figallo MA, Castillo-Oyagüe R, González-Martín M, Gutierrez-Pérez JL, Torres-Lagares D. Production of bone mineral material and BMP-2 in osteoblasts cultured on double acid-etched titanium. Med Oral Patol Oral Cir Bucal 2017; 22:e651-e659. [PMID: 28809380 PMCID: PMC5694190 DOI: 10.4317/medoral.22071] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2017] [Accepted: 06/23/2017] [Indexed: 11/30/2022] Open
Abstract
Background The study of osteoblasts and their osteogenic functions is essential in order to understand them and their applications in implantology. In this sense, this study try to study BMP-2 production and bone matrix deposition, in addition to other biological variables, in osteoblasts cultured on a rough double acid-etched titanium surface (Osseotite®, Biomet 3i, Palm Beach Garden, Florida, USA) in comparison to a smooth titanium surface (machined) and a control Petri dish. Material and Methods An in vitro prospective study. NHOst human osteoblasts from the femur were cultured on three different surfaces: Control group: 25-mm methacrylate dish (n = 6); Machined group: titanium discs with machined surface (n = 6) and Experimental group: titanium discs with a double acid-etched nitric and hydrofluoric Osseotite® acid surface (n = 6). A quantification of the mitochondrial membrane potential, and studies of apoptosis, mobility and adhesion, bone productivity (BMP-2) and cellular bone synthesis were carried out after culturing the three groups for forty-eight hours. Results A statistically significant difference was observed in the production of BMP-2 between the experimental group and the other two groups (22.33% ± 11.06 vs. 13.10% ± 5.51 in the machined group and 3.88% ± 3.43 in the control group). Differences in cellular bone synthesis were also observed between the groups (28.34% ± 14.4% in the experimental group vs. 20.03% ± 6.79 in the machined group and 19.34% ± 15.93% in the control group). Conclusions In comparison with machined surfaces, Osseotite® surfaces favor BMP-2 production and bone synthesis as a result of the osteoblasts in contact with it. Key words:BMP-2, Cytoskeleton, cell culture, bone matrix, apoptosis, cell viability.
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Affiliation(s)
- R Velázquez-Cayón
- School of Dentistry. University of Seville, C/Avicena s/n, 41009 Seville,
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Karyagina AS, Boksha IS, Grunina TM, Demidenko AV, Poponova MS, Sergienko OV, Lyaschuk AM, Galushkina ZM, Soboleva LA, Osidak EO, Semikhin AS, Gromov AV, Lunin VG. Optimization of rhBMP-2 active-form production in a heterologous expression system using microbiological and molecular genetic approaches. MOLECULAR GENETICS MICROBIOLOGY AND VIROLOGY 2017. [DOI: 10.3103/s0891416816040030] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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21
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Ruschke K, Meier C, Ullah M, Krebs AC, Silberreis K, Kohl B, Knaus P, Jagielski M, Arens S, Schulze-Tanzil G. Bone morphogenetic protein 2/SMAD signalling in human ligamentocytes of degenerated and aged anterior cruciate ligaments. Osteoarthritis Cartilage 2016; 24:1816-1825. [PMID: 27208419 DOI: 10.1016/j.joca.2016.05.014] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/30/2015] [Revised: 04/27/2016] [Accepted: 05/11/2016] [Indexed: 02/02/2023]
Abstract
OBJECTIVE Anterior cruciate ligament (ACL) degeneration leads to knee instability and favors osteoarthritis (OA) progression. During ageing the growth factor sensitivity of ligaments changes but nothing is known about BMP2-signalling and -sensitivity in degenerated ACLs. This study addressed the question whether a dysregulated BMP2 signalling might contribute to age- and OA-dependent ACL degeneration. METHOD ACL samples from patients with/without OA of different ages (<60 and ≥60 years, males, females) were graded histopathologically (n = 45). After stimulation of cultured ACL fibroblasts with 5 nM BMP2 for different time points, phosphorylation of SMAD1/5/8 and gene expression of crucial BMP2 signalling proteins, ligamentogenic and chondrogenic transcription factors, scleraxis (SCX) and SOX9, were analyzed. RESULTS ACL samples displayed different grades of degeneration, often associated with synovitis and calcium deposits. Degeneration correlated significantly with synovitis. ACL fibroblasts expressed BMP type I receptors ALK3 and ALK6 and the BMP type II receptor BMPRII. Donors could be divided into "responders" and "non responders" since their BMP2 mediated SMAD1/5/8 phosphorylation level differed. Basal ID1 expression was lower in cells derived from OA compared with non-OA patients and BMP2 led to an ID1 induction in both. Irrespective of BMP2 stimulation, the donor age significantly influenced the expression profile of BMP6 and SCX but not BMP signalling. The BMP2-mediated SMAD6 expression differed between OA and healthy ACL fibroblasts. CONCLUSION Our data indicate that the expression level of BMP2/SMAD target genes such as ID1 and SMAD6 was reduced in ACL fibroblasts derived from OA compared with non OA patients.
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Affiliation(s)
- K Ruschke
- Freie Universität Berlin, Institute of Chemistry and Biochemistry, Berlin, Germany
| | - C Meier
- Charité-Universitätsmedizin Berlin, Department of Orthopaedic, Trauma and Reconstructive Surgery, Campus Benjamin Franklin, Berlin, Germany
| | - M Ullah
- Charité-Universitätsmedizin Berlin, Department of Orthopaedic, Trauma and Reconstructive Surgery, Campus Benjamin Franklin, Berlin, Germany
| | - A-C Krebs
- Freie Universität Berlin, Institute of Chemistry and Biochemistry, Berlin, Germany; Charité-Universitätsmedizin Berlin, Department of Orthopaedic, Trauma and Reconstructive Surgery, Campus Benjamin Franklin, Berlin, Germany
| | - K Silberreis
- Charité-Universitätsmedizin Berlin, Department of Orthopaedic, Trauma and Reconstructive Surgery, Campus Benjamin Franklin, Berlin, Germany
| | - B Kohl
- Charité-Universitätsmedizin Berlin, Department of Orthopaedic, Trauma and Reconstructive Surgery, Campus Benjamin Franklin, Berlin, Germany
| | - P Knaus
- Freie Universität Berlin, Institute of Chemistry and Biochemistry, Berlin, Germany; Berlin-Brandenburg Center for Regenerative Therapies, Charité-Universitätsmedizin Berlin, Berlin, Germany
| | - M Jagielski
- Charité-Universitätsmedizin Berlin, Department of Orthopaedic, Trauma and Reconstructive Surgery, Campus Benjamin Franklin, Berlin, Germany
| | - S Arens
- Charité-Universitätsmedizin Berlin, Department of Orthopaedic, Trauma and Reconstructive Surgery, Campus Benjamin Franklin, Berlin, Germany
| | - G Schulze-Tanzil
- Charité-Universitätsmedizin Berlin, Department of Orthopaedic, Trauma and Reconstructive Surgery, Campus Benjamin Franklin, Berlin, Germany; Institute of Anatomy, Paracelsus Medical University, Salzburg and Nuremberg, Nuremberg, Germany.
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22
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Itoi T, Harada Y, Irie H, Sakamoto M, Tamura K, Yogo T, Soeta S, Amasaki H, Hara Y, Tagawa M. Escherichia coli-derived recombinant human bone morphogenetic protein-2 combined with bone marrow-derived mesenchymal stromal cells improves bone regeneration in canine segmental ulnar defects. BMC Vet Res 2016; 12:201. [PMID: 27619812 PMCID: PMC5020464 DOI: 10.1186/s12917-016-0829-y] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2015] [Accepted: 09/06/2016] [Indexed: 01/13/2023] Open
Abstract
BACKGROUND Large bone defects in canines usually require assistance to achieve healing. Implantation of osteoinductive factors can promote bone healing, while transplantation of osteoprogenitor cells can enhance bone regeneration. We hypothesized that implantation of an osteoinductive factor, recombinant human bone morphogenetic protein-2 (rhBMP-2), combined with osteoprogenitor cells, bone marrow-derived mesenchymal stromal cells (BMSCs), would synergistically promote bone healing. In this study, we examined the combined effects of Escherichia coli-derived rhBMP-2 and BMSCs on bone healing after implantation into canine ulnar defects. RESULTS Critical-sized osteoperiosteal segmental defects (2.5 cm) were created in the ulnae of healthy female beagle dogs, and implanted with combinations of E. coli-derived rhBMP-2 (560 or 140 μg) and autologous BMSCs (10(7), 10(5), or 0 cells). In the present study,18 forelimbs of nine healthy purpose-bred female beagles were used. All six treatment groups contained three forelimbs, and the animals were euthanized after 12 weeks. The control groups (560 and 140 μg/0 cells) were cited from our previous study to reduce the number of experimental animals. Radiographically, the regenerated bone width was significantly increased in the 560 or 140 μg with 10(7) and 10(5) cells groups compared with the 0 cells groups. By quantitative CT, the bone mineral density was higher in the 560 μg with 10(7) and 10(5) cells groups, while non-uniformity of the bone mineral density was improved in the 560 μg with 10(7) and 10(5) cells groups and 140 μg/10(7) cells group. Mechanically, the maximum loads at failure were significantly higher in the 560 μg with 10(7) and 10(5) cells groups. Histologically, the regenerated bone was well-developed and contained osteocyte-like cells marrow cavities, and vessels. However, the osteoclasts and osteoblasts were hardly observed. The osteocyte-like cell numbers were significantly higher in the 560 μg with 10(7) and 10(5) cells and 140 μg with 10(7) and 10(5) cells groups. CONCLUSIONS Implantation of E. coli-derived rhBMP-2 and BMSCs led to significantly enhanced bone formation, with improved bone mineral density and reduced non-uniformity of the regenerated bone. Combined implantation of rhBMP-2 and BMSCs may be useful for promotion of bone healing in critical-sized defects in canines.
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Affiliation(s)
- Takamasa Itoi
- Division of Veterinary Surgery, Nippon Veterinary and Life Science University, 1-7-1 Kyonan-cho, Musashino, Tokyo, 180-8602, Japan.
| | - Yasuji Harada
- Division of Veterinary Surgery, Nippon Veterinary and Life Science University, 1-7-1 Kyonan-cho, Musashino, Tokyo, 180-8602, Japan
| | - Hiroyuki Irie
- HOYA Technosurgical Corporation, 1-1-110 Tsutsujigaoka, Akishima, Tokyo, 196-0012, Japan
| | - Michiko Sakamoto
- HOYA Technosurgical Corporation, 1-1-110 Tsutsujigaoka, Akishima, Tokyo, 196-0012, Japan
| | - Katsutoshi Tamura
- Division of Animal and Clinical Regenerative Medicine, Kurashiki University of Science and Arts, 2640 Nishinoura, Tsurajima-machi, Kurashiki, Okayama, 712-8505, Japan
| | - Takuya Yogo
- Division of Veterinary Surgery, Nippon Veterinary and Life Science University, 1-7-1 Kyonan-cho, Musashino, Tokyo, 180-8602, Japan
| | - Satoshi Soeta
- Division of Veterinary Anatomy, Nippon Veterinary and Life Science University, 1-7-1 Kyonan-cho, Musashino, Tokyo, 180-8602, Japan
| | - Hajime Amasaki
- Division of Veterinary Anatomy, Nippon Veterinary and Life Science University, 1-7-1 Kyonan-cho, Musashino, Tokyo, 180-8602, Japan
| | - Yasushi Hara
- Division of Veterinary Surgery, Nippon Veterinary and Life Science University, 1-7-1 Kyonan-cho, Musashino, Tokyo, 180-8602, Japan
| | - Masahiro Tagawa
- Division of Veterinary Surgery, Nippon Veterinary and Life Science University, 1-7-1 Kyonan-cho, Musashino, Tokyo, 180-8602, Japan
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Ceresoli V, Mainieri D, Del Fabbro M, Weinstein R, Pedrazzini E. A Fusion between Domains of the Human Bone Morphogenetic Protein-2 and Maize 27 kD γ-Zein Accumulates to High Levels in the Endoplasmic Reticulum without Forming Protein Bodies in Transgenic Tobacco. FRONTIERS IN PLANT SCIENCE 2016; 7:358. [PMID: 27047526 PMCID: PMC4805588 DOI: 10.3389/fpls.2016.00358] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/14/2015] [Accepted: 03/07/2016] [Indexed: 05/12/2023]
Abstract
Human Bone Morphogenetic Protein-2 (hBMP2) is an osteoinductive agent physiologically involved in bone remodeling processes. A commercialized recombinant hBMP2 produced in mammalian cell lines is available in different clinical applications where bone regeneration is needed, but widespread use has been hindered due to an unfavorable cost/effective ratio. Protein bodies are very large insoluble protein polymers that originate within the endoplasmic reticulum by prolamine accumulation during the cereal seed development. The N-terminal domain of the maize prolamin 27 kD γ-zein is able to promote protein body biogenesis when fused to other proteins. To produce high yield of recombinant hBMP2 active domain (ad) in stably transformed tobacco plants we have fused it to the γ-zein domain. We show that this zein-hBMP2ad fusion is retained in the endoplasmic reticulum without forming insoluble protein bodies. The accumulation levels are above 1% of total soluble leaf proteins, indicating that it could be a rapid and suitable strategy to produce hBMP2ad at affordable costs.
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Affiliation(s)
- Valentina Ceresoli
- Istituto di Biologia e Biotecnologia Agraria, Consiglio Nazionale Delle RicercheMilano, Italy
- Dipartimento Scienze Biomediche, Chirurgiche e Odontoiatriche, Università Degli Studi di MilanoMilano, Italy
- IRCCS Istituto Ortopedico GaleazziMilano, Italy
| | - Davide Mainieri
- Istituto di Biologia e Biotecnologia Agraria, Consiglio Nazionale Delle RicercheMilano, Italy
| | - Massimo Del Fabbro
- Dipartimento Scienze Biomediche, Chirurgiche e Odontoiatriche, Università Degli Studi di MilanoMilano, Italy
- IRCCS Istituto Ortopedico GaleazziMilano, Italy
| | - Roberto Weinstein
- Dipartimento Scienze Biomediche, Chirurgiche e Odontoiatriche, Università Degli Studi di MilanoMilano, Italy
- IRCCS Istituto Ortopedico GaleazziMilano, Italy
| | - Emanuela Pedrazzini
- Istituto di Biologia e Biotecnologia Agraria, Consiglio Nazionale Delle RicercheMilano, Italy
- *Correspondence: Emanuela Pedrazzini
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Kim H, Chung J, Shin S, Shin S, Kye S, Kim N, Kwon T, Paeng J, Kim J, Oh O, Kook M, Yang H, Hwang S. Efficacy of rhBMP-2/Hydroxyapatite on Sinus Floor Augmentation. J Dent Res 2015; 94:158S-65S. [DOI: 10.1177/0022034515594573] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
The aim of this randomized single-blinded active-controlled clinical study was to evaluate the early efficacy of low-dose Escherichia coli–derived recombinant human bone morphogenetic protein 2 (rhBMP-2) soaked with hydroxyapatite granules (BMP-2/H) as compared with an inorganic bovine bone xenograft (ABX) in maxillary sinus floor augmentation. In a total of 127 subjects who were enrolled at 6 centers, maxillary sinus floors were augmented with 1 mg/mL of rhBMP-2 (0.5 to 2.0 mg per sinus) and BMP-2/H (0.5 to 2.0 g; n = 65) or with ABX alone (0.5 to 2.0 g; n = 62). Core biopsies were obtained 3 mo after the augmentation surgery and were analyzed histomorphometrically. The mean new bone formation with BMP-2/H and ABX augmentation was 16.10% ± 10.52% and 8.25% ± 9.47%, respectively. The BMP-2/H group was noninferior to the ABX group; the lower limit of the 1-sided 97.5% confidence interval for the difference between the 2 groups was calculated as 4.33%, which was greater than the prespecified noninferiority margin of −3.75%. An additional test with the Wilcoxon rank-sum test with a 2-sided 5% significance level showed that bone formation between the 2 groups was significantly different ( P < 0.0001). The soft tissue and residual graft areas showed no significant differences between the groups. With regard to safety, no significant difference between the 2 groups was observed; there was no significant increase in the amount of rhBMP-2 antibody in the serum after BMP-2/H grafting. Our study suggested that low-dose Escherichia coli–derived rhBMP-2 with hydroxyapatite was effective in early stages for enhanced bone formation after maxillary sinus floor augmentation without harmful adverse events ( Clinicaltrials.gov NCT01634308).
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Affiliation(s)
- H.J. Kim
- Department of Oral and Maxillofacial Surgery, College of Dentistry, Yonsei University, Seoul, Korea
| | - J.H. Chung
- Department of Periodontology, Institute of Oral Biology, School of Dentistry, Kyung Hee University, Seoul, Korea
| | - S.Y. Shin
- Department of Periodontology, Institute of Oral Biology, School of Dentistry, Kyung Hee University, Seoul, Korea
| | - S.I. Shin
- Department of Periodontology, Institute of Oral Biology, School of Dentistry, Kyung Hee University, Seoul, Korea
| | - S.B. Kye
- Department of Periodontology, Samsung Seoul Hospital, School of Medicine, Sungkyunkwan University, Seoul, Korea
| | - N.K. Kim
- Department of Oral and Maxillofacial Surgery, College of Dentistry, Yonsei University, Seoul, Korea
| | - T.G. Kwon
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Kyungpook National University, Daegu, Korea
| | - J.Y. Paeng
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Kyungpook National University, Daegu, Korea
| | - J.W. Kim
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Kyungpook National University, Daegu, Korea
| | - O.H. Oh
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Chonnam National University, Gwangju, Korea
| | - M.S. Kook
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Chonnam National University, Gwangju, Korea
| | - H.J. Yang
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Dental Research Institute, BK 21 2nd Program, Seoul National University, Seoul, Korea
| | - S.J. Hwang
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Dental Research Institute, BK 21 2nd Program, Seoul National University, Seoul, Korea
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Ono M, Sonoyama W, Yamamoto K, Oida Y, Akiyama K, Shinkawa S, Nakajima R, Pham HT, Hara ES, Kuboki T. Efficient Bone Formation in a Swine Socket Lift Model Using Escherichia coli-Derived Recombinant Human Bone Morphogenetic Protein-2 Adsorbed in β-Tricalcium Phosphate. Cells Tissues Organs 2015; 199:249-55. [DOI: 10.1159/000369061] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/13/2014] [Indexed: 11/19/2022] Open
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Kong CB, Lee JH, Baek HR, Lee CK, Chang BS. Posterolateral lumbar fusion using Escherichia coli-derived rhBMP-2/hydroxyapatite in the mini pig. Spine J 2014; 14:2959-67. [PMID: 24937799 DOI: 10.1016/j.spinee.2014.06.007] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/20/2013] [Revised: 04/25/2014] [Accepted: 06/09/2014] [Indexed: 02/03/2023]
Abstract
BACKGROUND CONTEXT Hydroxyapatite (HA) is used as a bone graft extender for posterolateral spinal fusion in human. It is also useful as a recombinant human bone morphogenetic protein (rhBMP)-2 carrier because of its high affinity for rhBMP-2. PURPOSE To assess the osteoinductivity of Escherichia coli-derived rhBMP-2 (E-BMP-2) using HA granules as a carrier and to evaluate the bone-forming ability depending on the different dosages of E-BMP-2. STUDY DESIGN A mini-pig lumbar posterolateral fusion model using microcomputed tomography (μCT) scanning. PATIENT SAMPLE Thirty-one adult male mini pigs were randomized into a single control group (n=8) without E-BMP-2 and two experimental groups with two different doses of E-BMP-2 (1 mg per side, n=8 and 3 mg per side, n=15). OUTCOME MEASURES Outcome was measured by plain radiography, manual palpation, CT, three-dimensional μCT, and histologic examinations. METHODS Bilateral intertransverse process arthrodesis was performed, and E-BMP-2 (0, 1.0, 3.0 mg per side) was implanted into the intertransverse space using HA granules as a carrier. RESULTS Three mini pigs were removed because of death. Among 28 experimental subjects, 19 animals achieved solid bony union. The fusion rates were 37.5% for control group, 71.4% for 1 mg group, and 84.6% for 3 mg group. Fusion rates were significantly different among groups (p=.031). However, there was no statistically significant difference in fusion rates between 1 and 3 mg groups (p=.587). Thirty-eight intertransverse fusion masses of 19 subjects underwent μCT scanning. The bone volumes determined by μCT were 12,603±3,240 mm(3) for control group, 18,718±3,000 mm(3) for 1 mg group, and 26,768±7,256 mm(3) for 3 mg group, and the difference between groups was statistically significant (p<.001). CONCLUSIONS This study shows that E-BMP-2 has osteoinductive activity in dose-dependent fashion, and porous HA granule is suitable for E-BMP-2 carrier in a porcine posterolateral fusion model. These preliminary findings suggest that E-BMP-2-adsorbed porous HA granules could be a novel effective bone graft substitute.
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Affiliation(s)
- Chang-Bae Kong
- Department of Orthopedic Surgery, Korea Cancer Center Hospital, 215-4, Gongneung-dong, Nowon-gu, Seoul 139-706, Korea
| | - Jae Hyup Lee
- Department of Orthopedic Surgery, College of Medicine, Seoul National University, Seoul Metropolitan Goverment Seoul National University Boramae Medical Center, 41 Boramae-Gil, Seoul 156-707, Korea.
| | - Hae-Ri Baek
- Department of Orthopedic Surgery, College of Medicine, Seoul National University, Seoul Metropolitan Goverment Seoul National University Boramae Medical Center, 41 Boramae-Gil, Seoul 156-707, Korea
| | - Choon-Ki Lee
- Department of Orthopedic Surgery, Seoul National University Hospital, 28 Yeonkeon-dong, Chongro-gu, Seoul 110-744, Korea
| | - Bong-Soon Chang
- Department of Orthopedic Surgery, Seoul National University Hospital, 28 Yeonkeon-dong, Chongro-gu, Seoul 110-744, Korea
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Moglia R, Whitely M, Brooks M, Robinson J, Pishko M, Cosgriff-Hernandez E. Solvent-free fabrication of polyHIPE microspheres for controlled release of growth factors. Macromol Rapid Commun 2014; 35:1301-5. [PMID: 24810735 DOI: 10.1002/marc.201400145] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2014] [Revised: 04/08/2014] [Indexed: 01/22/2023]
Abstract
The growth factor bone morphogenetic protein 2 (BMP-2) is utilized in surgical procedures to improve bone regeneration; however, current treatments deliver BMP-2 at amounts greater than 100,000 fold of physiological levels, which increases treatment costs and risk of side effects. Drug-eluting microcarriers developed to improve these therapies have faced significant commercialization challenges including particle size distributions, solvent removal, low encapsulation efficiency, and bioactivity loss. In this study, a solvent-free method is presented for fabrication of uniform polyHIPE microspheres for controlled growth factor release. Emulsion templating principles and fluid dynamics were used to fabricate uniform particles with tunable particle size (200-800 μm) and pore size (10-30 μm). The ability to independently tune particle and pore size is expected to provide excellent control of release kinetics. Overall, this solvent-free method for making porous microspheres displays strong promise for the controlled release of BMP-2 and other growth factors.
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Affiliation(s)
- Robert Moglia
- Department of Biomedical Engineering, Texas A&M University, College Station, TX, 77843-3120, USA
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Cartilage derived morphogenetic protein 2 – A potential therapy for intervertebral disc regeneration? Biologicals 2014; 42:65-73. [DOI: 10.1016/j.biologicals.2013.12.003] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2013] [Revised: 12/13/2013] [Accepted: 12/19/2013] [Indexed: 12/11/2022] Open
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Rane AM, Jonnalagadda S, Li Z. On-column refolding of bone morphogenetic protein-2 using cation exchange resin. Protein Expr Purif 2013; 90:135-40. [DOI: 10.1016/j.pep.2013.05.008] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2013] [Revised: 05/18/2013] [Accepted: 05/20/2013] [Indexed: 11/25/2022]
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Zheng D, Neoh KG, Shi Z, Kang ET. Assessment of stability of surface anchors for antibacterial coatings and immobilized growth factors on titanium. J Colloid Interface Sci 2013; 406:238-46. [PMID: 23810547 DOI: 10.1016/j.jcis.2013.05.060] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2013] [Revised: 04/30/2013] [Accepted: 05/04/2013] [Indexed: 01/09/2023]
Abstract
Titanium (Ti) has been functionalized with biomolecules for biomedical purposes. However, there is very limited information on the stability of such functionalities. Ti surface functionalized with carboxymethyl chitosan (CMCS) and bone morphogenetic protein 2 (BMP-2) has been reported to inhibit bacterial colonization while at the same time enhances osteoblast functions. In this work, three types of anchoring molecules, (3-aminopropyl) triethoxysilane (Silane), dopamine (DA), and polydopamine (PDA), were used for immobilizing the CMCS on Ti. The CMCS-modified surfaces were subjected to 70% ethanol treatment, autoclaving, and prolonged immersion in phosphate buffered saline (PBS). After the treatment procedures, the ability of the CMCS-modified substrates to inhibit colonization by Staphylococcus epidermidis (S. epidermidis) was assessed to evaluate the stability of the immobilized CMCS. The bacterial adhesion assays showed that the CMCS-DA- and CMCS-PDA-modified Ti remained stable after 70% ethanol treatment, autoclaving, and prolonged immersion in PBS, whereas the CMCS-Silane-modified Ti was less stable after autoclaving and prolonged immersion in PBS. The CMCS-DA- and CMCS-PDA-modified Ti substrates were functionalized with BMP-2 and used to support osteoblast growth. Evaluation of alkaline phosphatase (ALP) activity and calcium deposition from osteoblasts cultured on these substrates, which have been treated with 70% ethanol, or subjected to autoclaving, and prolonged immersion in PBS indicated that the immobilized BMP-2 on these surfaces retained its bioactivity.
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Affiliation(s)
- Dong Zheng
- Department of Chemical and Biomolecular Engineering, National University of Singapore, Kent Ridge, Singapore 117576, Singapore
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Martínez-Vázquez FJ, Perera FH, van der Meulen I, Heise A, Pajares A, Miranda P. Impregnation of β-tricalcium phosphate robocast scaffolds by in situ polymerization. J Biomed Mater Res A 2013; 101:3086-96. [PMID: 23526780 DOI: 10.1002/jbm.a.34609] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2013] [Accepted: 01/16/2013] [Indexed: 11/09/2022]
Abstract
Ring-opening polymerization of ε-caprolactone (ε-CL) and L-lactide (LLA) was performed to impregnate β-tricalcium phosphate (β-TCP) scaffolds fabricated by robocasting. Concentrated colloidal inks prepared from β-TCP commercial powders were used to fabricate porous structures consisting of a 3D mesh of interpenetrating rods. ε-CL and LLA were in situ polymerized within the ceramic structure by using a lipase and stannous octanoate, respectively, as catalysts. The results show that both the macropores inside the ceramic mesh and the micropores within the ceramic rods are full of polymer in either case. The mechanical properties of scaffolds impregnated by in situ polymerization (ISP) are significantly increased over those of the bare structures, exhibiting similar values than those obtained by other, more aggressive, impregnation methods such as melt-immersion (MI). ISP using enzymatic catalysts requires a reduced processing temperature which could facilitate the incorporation of growth factors and other drugs into the polymer composition, thus enhancing the bioactivity of the composite scaffold. The implications of these results for the optimization of the mechanical and biological performance of scaffolds for bone tissue engineering applications are discussed.
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Affiliation(s)
- Francisco J Martínez-Vázquez
- Departamento de Ingeniería Mecánica, Energética y de los Materiales, Universidad de Extremadura, Avda de Elvas s/n, 06006, Badajoz, Spain
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Hwang CJ, Lee JH, Baek HR, Chang BS, Lee CK. Evaluation of the efficacy of Escherichia coli-derived recombinant human bone morphogenetic protein-2 in a mini-pig spinal anterior interbody fusion model. Bone Joint J 2013; 95-B:217-23. [DOI: 10.1302/0301-620x.95b2.29466] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
We evaluated the efficacy of Escherichia coli-derived recombinant human bone morphogenetic protein-2 (E-BMP-2) in a mini-pig model of spinal anterior interbody fusion. A total of 14 male mini-pigs underwent three-level anterior lumbar interbody fusion using polyether etherketone (PEEK) cages containing porous hydroxyapatite (HA). Four groups of cages were prepared: 1) control (n = 10 segments); 2) 50 μg E-BMP-2 (n = 9); 3) 200 μg E-BMP-2 (n = 10); and 4) 800 μg E-BMP-2 (n = 9). At eight weeks after surgery the mini-pigs were killed and the specimens were evaluated by gross inspection and manual palpation, radiological evaluation including plain radiographs and micro-CT scans, and histological analysis. Rates of fusion within PEEK cages and overall union rates were calculated, and bone formation outside vertebrae was evaluated. One animal died post-operatively and was excluded, and one section was lost and also excluded, leaving 38 sites for assessment. This rate of fusion within cages was 30.0% (three of ten) in the control group, 44.4% (four of nine) in the 50 μg E-BMP-2 group, 60.0% (six of ten) in the 200 μg E-BMP-2 group, and 77.8% (seven of nine) in the 800 μg E-BMP-2 group. Fusion rate was significantly increased by the addition of E-BMP-2 and with increasing E-BMP-2 dose (p = 0.046). In a mini-pig spinal anterior interbody fusion model using porous HA as a carrier, the implantation of E-BMP-2-loaded PEEK cages improved the fusion rate compared with PEEK cages alone, an effect that was significantly increased with increasing E-BMP-2 dosage. Cite this article: Bone Joint J 2013;95-B:217–23.
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Affiliation(s)
- C. J. Hwang
- Asan Medical Center, University of Ulsan
College of Medicine, 88 Olympic-ro 43-gil, Songpa-gu, Seoul
138-736, Korea
| | - J. H. Lee
- SMG-SNU Boramae Medical Center, Seoul
National University College of Medicine, 395
Shindaebang 2-dong, Dongjak-gu, Seoul
156-707, Korea
| | - H-R. Baek
- SMG-SNU Boramae Medical Center, Seoul
National University College of Medicine, 395
Shindaebang 2-dong, Dongjak-gu, Seoul
156-707, Korea
| | - B-S. Chang
- Seoul National University Hospital, Seoul
National University College of Medicine, 101
Daehak-ro, Jongnu-gu, Seoul
110-744, Korea
| | - C-K. Lee
- Seoul National University Hospital, Seoul
National University College of Medicine, 101
Daehak-ro, Jongnu-gu, Seoul
110-744, Korea
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Ono M, Sonoyama W, Nema K, Hara ES, Oida Y, Pham HT, Yamamoto K, Hirota K, Sugama K, Sebald W, Kuboki T. Regeneration of Calvarial Defects withEscherichia coli-Derived rhBMP-2 Adsorbed in PLGA Membrane. Cells Tissues Organs 2013; 198:367-76. [DOI: 10.1159/000356947] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/31/2013] [Indexed: 11/19/2022] Open
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Huh JB, Kim SE, Kim HE, Kang SS, Choi KH, Jeong CM, Lee JY, Shin SW. Effects of anodized implants coated with Escherichia coli-derived rhBMP-2 in beagle dogs. Int J Oral Maxillofac Surg 2012; 41:1577-84. [DOI: 10.1016/j.ijom.2012.04.005] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2011] [Revised: 02/20/2012] [Accepted: 04/05/2012] [Indexed: 11/26/2022]
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Effect of different concentrations of Escherichia Coli-derived rhBMP-2 coating on osseointegration of implants in dogs. Tissue Eng Regen Med 2012. [DOI: 10.1007/s13770-012-0319-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
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Lo KWH, Ulery BD, Kan HM, Ashe KM, Laurencin CT. Evaluating the feasibility of utilizing the small molecule phenamil as a novel biofactor for bone regenerative engineering. J Tissue Eng Regen Med 2012; 8:728-36. [PMID: 22815259 DOI: 10.1002/term.1573] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2011] [Revised: 05/17/2012] [Accepted: 06/12/2012] [Indexed: 01/30/2023]
Abstract
Osteoblast cell adhesion and differentiation on biomaterials are important achievements necessary for implants to be useful in bone regenerative engineering. Recombinant bone morphogenetic proteins (BMPs) have been shown to be important for these processes; however, there are many challenges associated with the widespread use of these proteins. A recent report demonstrated that the small molecule phenamil, a diuretic derivative, was able to induce osteoblast differentiation and mineralization in vitro via the canonical BMP signalling cascade (Park et al., 2009). In this study, the feasibility of using phenamil as a novel biofactor in conjunction with a biodegradable poly(lactide-co-glycolide acid) (PLAGA) polymeric scaffold for engineering bone tissue was evaluated. The in vitro cellular behaviour of osteoblast-like MC3T3-E1 cells cultured on PLAGA scaffolds in the presence of phenamil at 10 μM were characterized with regard to initial cell adhesion, proliferation, alkaline phosphatase (ALP) activity and matrix mineralization. The results demonstrate that phenamil supported cell proliferation, promoted ALP activity and facilitated matrix mineralization of osteoblast-like MC3T3-E1 cells. Moreover, in this study, we found that phenamil promoted integrin-mediated cell adhesion on PLAGA scaffolds. It was also shown that phenamil encapsulated within porous, microsphere PLAGA scaffolds retained its osteogenic activity upon release. Based on these findings, the small molecule phenamil has the potential to serve as a novel biofactor for the repair and regeneration of bone tissues.
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Affiliation(s)
- Kevin W-H Lo
- Institute for Regenerative Engineering, University of Connecticut Health Center, School of Medicine, Farmington, CT, USA; Department of Medicine, Division of Endocrinology, University of Connecticut Health Center, School of Medicine, Farmington, CT, USA
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Yano K, Namikawa T, Uemura T, Hoshino M, Wakitani S, Takaoka K, Nakamura H. Regenerative repair of bone defects with osteoinductive hydroxyapatite fabricated to match the defect and implanted with combined use of computer-aided design, computer-aided manufacturing, and computer-assisted surgery systems: a feasibility study in a canine model. J Orthop Sci 2012; 17:484-9. [PMID: 22538439 DOI: 10.1007/s00776-012-0235-7] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/20/2011] [Accepted: 04/11/2012] [Indexed: 11/28/2022]
Abstract
BACKGROUND Currently, regenerative repair of large bone defects that result from bone tumor resection or severe trauma is a challenging issue because of the limited regenerative potential of bone and treatment modalities. The aim of this study was to achieve repair of large bone defects to the original three-dimensional (3D) anatomical state by combining computer-aided technologies and local delivery of bone morphogenetic protein (BMP) in a canine model. METHODS Computed tomography (CT) images of the pelvic bone of each dog were obtained, and an imaginary spherical malignant bone tumor of 15-mm diameter was placed in the left ilium of a canine on the 3D CT image. Resection of the whole tumor with a 10-mm margin of healthy bone was planned preoperatively by using computer-aided design (CAD) software. In addition, an image of the implant to be used to fill the resulting bone defect was constructed on the computer image. A porous hydroxyapatite (HA) implant identical to the imaged bone defect was made by shaving a tetragonal porous apatite block (40 × 20 × 10 mm) with a computer-aided manufacturing system operated by using the CT-image data of the bone defect obtained from the CAD system. To resect the iliac bone as planned preoperatively on the 3D CT image, computer-aided surgery was performed using the CT data. The defect was filled with the HA implant fabricated as described and coated with a putty carrier either with BMP-2 (BMP group, n = 6) or without BMP-2 (control group, n = 6). RESULTS In the BMP group, new bone formation was noted around each implant on CT images at 3 weeks after surgery and was remodeled to restore the original anatomy of the ilium on serial CT images. At 12 weeks, the implant was enclosed within new bone, and histological analysis revealed bone formation on and within the implant. Little bone formation was noted in the control group. CONCLUSIONS This new method may enable efficacious and precise regenerative repair of large bone defects without bone grafting.
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Affiliation(s)
- Koichi Yano
- Department of Orthopaedic Surgery, Osaka City University Graduate School of Medicine, 1-4-3 Asahi-machi, Abeno-ku, Osaka 545-8585, Japan.
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Harada Y, Itoi T, Wakitani S, Irie H, Sakamoto M, Zhao D, Nezu Y, Yogo T, Hara Y, Tagawa M. Effect of Escherichia coli-produced recombinant human bone morphogenetic protein 2 on the regeneration of canine segmental ulnar defects. J Bone Miner Metab 2012; 30:388-99. [PMID: 22042292 DOI: 10.1007/s00774-011-0329-x] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/15/2010] [Accepted: 10/03/2011] [Indexed: 11/26/2022]
Abstract
Because bone morphogenetic protein 2 gene transfected Escherichia coli (E-BMP-2) produce recombinant human BMP-2 (rhBMP-2) more efficiently than mammalian cells (Chinese hamster ovary [CHO]-BMP-2), they may be a more cost-effective source of rhBMP-2 for clinical use. However, use of E-BMP-2 for regenerating long bones in large animals has not been reported. In the current study, we evaluated the healing efficacy of E-BMP-2 in a canine model. We created 2.5-cm critical-size segmental ulnar defects in test animals, then implanted E-BMP-2 and 700 mg of artificial bone (beta-tricalcium phosphate; β-TCP) into the wounds. We examined the differential effects of 5 E-BMP-2 treatments (0, 35, 140, 560, and 2240 μg) across 5 experimental groups (control, BMP35, BMP140, BMP560, and BMP2240). Radiography and computed tomography were used to observe the regeneration process. The groups in which higher doses of E-BMP-2 were administered (BMP560 and BMP2240) displayed more pronounced bone regeneration; the regenerated tissues connected to the host bone, and the cross-sectional areas of the regenerated bone were larger than those of the originals. The groups in which lower doses of E-BMP-2 were administered (BMP35 and BMP140) experienced relatively less bone regeneration; furthermore, the regenerated tissues failed to connect to the host bone. In these groups, the cross-sectional areas of the regenerated bone were equal to or smaller than those of the originals. No regeneration was observed in the control group. These findings suggest that, like CHO-BMP-2, E-BMP-2 can be used for the regeneration of large defects in long bones and that its clinical use might decrease the cost of bone regeneration treatments.
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Affiliation(s)
- Yasuji Harada
- Division of Veterinary Surgery, Nippon Veterinary and Life Science University, 1-7-1 Kyonan-cho, Musashino, Tokyo 180-8602, Japan.
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Neoh KG, Hu X, Zheng D, Kang ET. Balancing osteoblast functions and bacterial adhesion on functionalized titanium surfaces. Biomaterials 2012; 33:2813-22. [DOI: 10.1016/j.biomaterials.2012.01.018] [Citation(s) in RCA: 203] [Impact Index Per Article: 16.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2011] [Accepted: 01/09/2012] [Indexed: 12/12/2022]
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Non-glycosylated BMP-2 can induce ectopic bone formation at lower concentrations compared to glycosylated BMP-2. J Control Release 2012; 159:69-77. [DOI: 10.1016/j.jconrel.2011.12.041] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2011] [Revised: 12/28/2011] [Accepted: 12/29/2011] [Indexed: 11/20/2022]
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Lee JH, Yu CH, Yang JJ, Baek HR, Lee KM, Koo TY, Chang BS, Lee CK. Comparative study of fusion rate induced by different dosages of Escherichia coli-derived recombinant human bone morphogenetic protein-2 using hydroxyapatite carrier. Spine J 2012; 12:239-48. [PMID: 22341396 DOI: 10.1016/j.spinee.2012.01.013] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/09/2011] [Revised: 08/25/2011] [Accepted: 01/24/2012] [Indexed: 02/03/2023]
Abstract
BACKGROUND CONTEXT Hydroxyapatite (HA) is considered to be useful because of its high affinity for recombinant human bone morphogenetic protein (rhBMP), mechanical resistance to compressive force, and possible reduction of rhBMP dose. PURPOSE To evaluate the osteoinductivity of Escherichia coli-derived rhBMP-2 and the suitability of porous HA as an rhBMP-2 carrier. STUDY DESIGN In vivo study using microcomputerized tomography (micro-CT) scanning. PATIENT SAMPLE Seventy-six New Zealand white male rabbits were randomized into a single control group (n=14) without rhBMP-2 and four experimental groups (10 μg, 50 μg, 200 μg, and 500 μg of rhBMP-2; n=14 in each group). The subjects were divided into 3- and 6-week groups. OUTCOME MEASURES Outcome was evaluated by radiography, bending test, three-dimensional micro-CT, and histologic examinations. METHODS Bilateral posterolateral fusion was carried out, and rhBMP-2 (0, 10, 50, 200, 500, 1,000, and 2,000 μg) was implanted into the bilateral transverse processes using HA as a carrier. RESULTS The fusion rates of the 3-week group were 83.3% for 50 and 200 μg of rhBMP-2 and 100% for 500 μg. The improved fusion rates of the 50 μg or higher groups compared with those of control were statistically significant. The fusion rates of the 6-week group were 75% for 10 μg of rhBMP-2 and 100% for 50 μg or higher. Similarly, the improved fusion rates of the 10 μg or higher groups compared with those of control were statistically significant. Significantly higher percent volumes were observed in the 3-week 200 μg of rhBMP-2 group and 6-week 200 μg of rhBMP-2 group than the 3-week HA group and 6-week HA group, respectively. Trabecular thickness was significantly higher in the 3-week 200 μg of rhBMP-2 group than the 3-week HA group. Histologic analysis of the 10 μg group showed bone tissues within the pores from 3 weeks, and this was observed more vividly in the 50, 200, and 500 μg groups. The 6-week 10 μg and 50 μg of rhBMP-2 groups had lower amounts of new tissue but higher portions of complete bone tissue within the HA specimen, along with higher formation of completely reconstituted bone tissues outside HA. CONCLUSIONS Injection of 50 μg or more of E. coli-derived rhBMP-2 into a HA carrier induced earlier bone fusion in the intertransverse process of rabbits, which confirms the excellent bone forming ability of E. coli-derived rhBMP-2 and the suitability of HA as a carrier of rhBMP-2.
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Affiliation(s)
- Jae Hyup Lee
- Department of Orthopedic Surgery, College of Medicine, Seoul National University, SMG-SNU Boramae Medical Center, 41 Boramae-Gil, Dongjak-Gu, Seoul, 156-707, Korea.
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Li D, Ye C, Zhu Y, Gou Z, Gao C. Enhancement of osteogenesis by poly(lactide-co-glycolide) sponges loaded with surface-embedded hydroxyapatite particles and rhBMP-2. J Biomed Mater Res B Appl Biomater 2012; 100:1103-13. [DOI: 10.1002/jbm.b.32677] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2011] [Revised: 12/24/2011] [Accepted: 01/02/2012] [Indexed: 11/06/2022]
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Efficacy of interspinous process lumbar fusion with recombinant human bone morphogenetic protein-2 delivered with a synthetic polymer and β-tricalcium phosphate in a rabbit model. EUROPEAN SPINE JOURNAL : OFFICIAL PUBLICATION OF THE EUROPEAN SPINE SOCIETY, THE EUROPEAN SPINAL DEFORMITY SOCIETY, AND THE EUROPEAN SECTION OF THE CERVICAL SPINE RESEARCH SOCIETY 2011; 21:1338-45. [PMID: 22203476 DOI: 10.1007/s00586-011-2130-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/11/2011] [Revised: 12/02/2011] [Accepted: 12/18/2011] [Indexed: 10/14/2022]
Abstract
INTRODUCTION As a powerful bone-inducing cytokine, rhBMP-2 has been used as a bone graft substitute in combination with animal-derived collagen to achieve interbody or posterolateral spinal fusion. Successful interspinous process fusion using rhBMP-2 in combination with synthetic carrier materials would offer a safe, minimally invasive spinal fusion option for the treatment of spinal disorders. The aims of the present study were to achieve interspinous process fusion by implanting rhBMP-2-retaining degradable material instead of bone grafting and to evaluate efficacy for vertebral stabilization. MATERIALS AND METHODS A polymer gel (200 mg), β-tricalcium phosphate powder (400 mg), and rhBMP-2 (0, 30, 60 or 120 μg) were mixed to generate a plastic implant, which was then placed during surgery to bridge the L5-6 interspinous processes of 58 rabbits. Control animals received implants either without rhBMP-2 or with autogenous bone chips from the iliac crest. L5-6 vertebrae were recovered 8 weeks postoperatively. Interspinous process fusion was evaluated by radiography, biomechanical bending test, intradiscal pressure (IDP) measurement, and histology. RESULTS In bending tests, strength of fusion was significantly greater in BMP60 and BMP120 groups than in sham, BMP0, BMP30 or autogenous bone groups. IDP at L5-6 was significantly reduced in BMP60 and BMP120 groups compared to sham, BMP0, BMP30, and autograft groups. Histologically, coronal sections of the fusion mass showed a bone mass bridging both spinous processes. CONCLUSION Solid interspinous process fusion was achieved in rabbit models by 8 weeks after implanting the biodegradable bone-inducing material. These results suggest a potential new less-invasive option without bone grafting for the treatment of lumbar disorders.
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Polyarginine peptide IND-1 enhances recombinant human bone morphogenetic protein-2 yield in mammalian cells. Biotechnol Lett 2011; 34:221-30. [PMID: 22038549 DOI: 10.1007/s10529-011-0781-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2011] [Accepted: 10/12/2011] [Indexed: 10/16/2022]
Abstract
To improve recombinant human bone morphogenetic protein-2 (rhBMP-2) yield, cell lines stably expressing hBMP2 were cultured in the presence of polyarginine peptide IND-1 and showed up to 6-fold increase in the yield of mature BMP-2. Repeated addition of IND-1 to cell cultures consistently improved BMP-2 yields over 53 days without affecting cell growth and viability. Investigation of its mechanism of action showed that IND-1 inhibited pro-protein convertase (PC) activity when incubated with cell lysates. However, when intact cells were cultured with IND-1, no change in cellular PC activity was observed. Furthermore, knockdown of furin (a prototypical member of the PCs) in cells did not affect their BMP-2 yields, suggesting furin/PC inhibition is unlikely the mechanism by which IND-1 enhances BMP-2 yields. IND-1 as a medium additive thus enhances BMP-2 production in mammalian cell expression systems.
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Huh JB, Park CK, Kim SE, Shim KM, Choi KH, Kim SJ, Shim JS, Shin SW. Alveolar ridge augmentation using anodized implants coated with Escherichia coli–derived recombinant human bone morphogenetic protein 2. ACTA ACUST UNITED AC 2011; 112:42-9. [DOI: 10.1016/j.tripleo.2010.09.063] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2010] [Revised: 08/24/2010] [Accepted: 09/22/2010] [Indexed: 02/05/2023]
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Zavgorodniy AV, Borrero-López O, Hoffman M, LeGeros RZ, Rohanizadeh R. Mechanical stability of two-step chemically deposited hydroxyapatite coating on Ti substrate: Effects of various surface pretreatments. J Biomed Mater Res B Appl Biomater 2011; 99:58-69. [DOI: 10.1002/jbm.b.31872] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2011] [Revised: 04/04/2011] [Accepted: 04/05/2011] [Indexed: 11/10/2022]
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Eguchi Y, Wakitani S, Naka Y, Nakamura H, Takaoka K. An injectable composite material containing bone morphogenetic protein-2 shortens the period of distraction osteogenesis in vivo. J Orthop Res 2011; 29:452-6. [PMID: 20882597 DOI: 10.1002/jor.21225] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/24/2010] [Accepted: 06/17/2010] [Indexed: 02/04/2023]
Abstract
To investigate new methods that can decrease the duration of bone transport (BT) distraction osteogenesis, we injected composite materials containing recombinant human bone morphogenetic protein-2 (BMP-2) and induced the generation of a callus bridge by rapid segmental transport (4 mm/day) in a rabbit bone defect model. The composite materials consisted of BMP-2 (0, 30, or 100 µg), β-tricalcium phosphate powder (βTCP, 100 mg/animal; particle size, <100 µm), and polyethylene glycol (PEG; 40 mg/animal). A paste of equivalent composition was percutaneously injected at the lengthening and the docking sites after surgery and after BT, respectively. The radiographic, mechanical, and histological examinations 12 weeks post-operative revealed that the generation of bridging callus in the presence and in the absence of BMP-2 was significantly different. The callus mass in the bone defect region was adequately and consistently developed in the presence of 100 µg of BMP (administered for 6 weeks), and the bones were consolidated in 12 weeks. Such an adequate callus formation was not observed in the control animals without BMP-2 treatment. The result of this experimental study suggests the potential application of BMP-2 in accelerating callus formation and in enabling rapid bone transporting, thereby shortening the treatment period for the repair of diaphyseal bone defects by distraction osteogenesis.
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Affiliation(s)
- Yoshitaka Eguchi
- Department of Orthopaedic Surgery, Osaka City University Graduate School of Medicine, 1-4-3 Asahi-machi, Abeno-ku, Osaka 545-8585, Japan.
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Bone formation of Escherichia coli expressed rhBMP-2 on absorbable collagen block in rat calvarial defects. ACTA ACUST UNITED AC 2011; 111:298-305. [DOI: 10.1016/j.tripleo.2010.05.011] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2009] [Revised: 05/12/2010] [Accepted: 05/13/2010] [Indexed: 11/22/2022]
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Kim JW, Choi KH, Yun JH, Jung UW, Kim CS, Choi SH, Cho KS. Bone formation of block and particulated biphasic calcium phosphate lyophilized with Escherichia coli-derived recombinant human bone morphogenetic protein 2 in rat calvarial defects. ACTA ACUST UNITED AC 2011; 112:298-306. [PMID: 21292513 DOI: 10.1016/j.tripleo.2010.10.025] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2010] [Accepted: 10/14/2010] [Indexed: 11/28/2022]
Abstract
The objective of this study was to evaluate bone formation in rat calvarial defects after surgical implantation of block or particulated biphasic calcium phosphate (BCP) lyophilized with Escherichia coli-derived recombinant human bone morphogenetic protein 2 (ErhBMP-2). Critical-size calvarial osteotomy defects were created in 5 groups of Sprague-Dawley rats. Each group received one of the following: 1) sham surgery control; 2) biphasic calcium phosphate particles (CPP); 3) biphasic calcium phosphate block (CPB); 4) ErhBMP-2-coated CPP; or 5) ErhBMP-2-coated CPB. ErhBMP was coated on BCP by a stepwise lyophilizing protocol. The new bone formation was significantly greater in ErhBMP-2-treated groups compared with the untreated group. In particular, the ErhBMP-2/CPB group showed stability of augmented areas during the period of healing, due to relevant space-providing capacity. Thus, it can be concluded that CPP and CPB lyophilized with ErhBMP-2 enhance the formation of new bone, and CPB appears to be a suitable carrier for ErhBMP-2 in which a 3-dimensional structural integrity is an important consideration factor.
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Affiliation(s)
- Jin-Woo Kim
- Research Institute for Periodontal Regeneration, Department of Periodontology, College of Dentistry, Yonsei University, Seodaemun-gu, Seoul, South Korea
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Okada M, Yano K, Namikawa T, Uemura T, Hoshino M, Kazuki K, Takaoka K, Nakamura H. Bone Morphogenetic Protein-2 Retained in Synthetic Polymer/β-Tricalcium Phosphate Composite Promotes Hypertrophy of a Vascularized Long Bone Graft in Rabbits. Plast Reconstr Surg 2011; 127:98-106. [DOI: 10.1097/prs.0b013e3181f95a73] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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