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Anish RJ, Mohanan B, Nair A, Radhakrishnan KV, Rauf AA. Protective effect of Pterospermum rubiginosum bark extract on bone mineral density and bone remodelling in estrogen deficient ovariectomized Sprague-Dawley (SD) rats. 3 Biotech 2024; 14:101. [PMID: 38464615 PMCID: PMC10917708 DOI: 10.1007/s13205-024-03942-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2023] [Accepted: 01/28/2024] [Indexed: 03/12/2024] Open
Abstract
Osteoporosis is a common metabolic old age disorder characterised by low bone mass content (BMC) and mineral density (BMD) with micro-architectural deterioration of the extracellular matrix, further increasing bone fragility risk. Several traditional remedies, including plant extracts and herbal formulations, are used worldwide by local healers to improve the overall bone health and metabolism as an excellent osteoregenerative agent. Pteropsermum rubiginosum is an underexplored medicinal plant used by tribal peoples of Western Ghats, India, to treat bone fractures and associated inflammation. The proposed study evaluates the elemental profiling and phytochemical characterisation of P. rubiginosum methanolic bark extract (PRME), along with detailed In vitro and In vivo biological investigation in MG-63 cells and Sprague-Dawley (SD) rats. AAS and ICP-MS analysis showed the presence of calcium, phosphorus, and magnesium and exceptional levels of strontium, chromium, and zinc in PRME. The NMR characterisation revealed the presence of vanillic acid, Ergost-4-ene-3-one and catechin. The molecular docking studies revealed the target pockets of isolated compounds and various marker proteins in the bone remodelling cycle. In vitro studies showed a significant hike in ALP and calcium content, along with upregulated mRNA expression of the ALP and COL1, which confirmed the osteoinductive activity of PRME in human osteoblast-like MG-63 cells. The in vivo evaluation in ovariectomised (OVX) rats showed remarkable recovery in ALP, collagen and osteocalcin protein after 3 months of PRME treatment. DEXA scanning reports in OVX rats supported the above in vitro and in vivo results, significantly enhancing the BMD and BMC. The results suggest that PRME can induce osteogenic activity and enhance bone formation with an excellent osteoprotective effect against bone loss in OVX animals due to estrogen deficiency. Supplementary Information The online version contains supplementary material available at 10.1007/s13205-024-03942-7.
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Affiliation(s)
- Rajamohanan Jalaja Anish
- Department of Biochemistry, University of Kerala, Kariavattom Campus, Thiruvananthapuram, 695581 India
| | - Biji Mohanan
- Chemical Sciences and Technology Division CSIR-National Institute for Interdisciplinary Science and Technology (CSIR-NIIST), Thiruvananthapuram, 695019 India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002 India
| | - Aswathy Nair
- Department of Biochemistry, University of Kerala, Kariavattom Campus, Thiruvananthapuram, 695581 India
- Kerala State Palmyrah Products Development and Workers’ Welfare Corporation Limited, Trivandrum, 695122 India
| | - K. V. Radhakrishnan
- Chemical Sciences and Technology Division CSIR-National Institute for Interdisciplinary Science and Technology (CSIR-NIIST), Thiruvananthapuram, 695019 India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002 India
| | - Arun A. Rauf
- Department of Biochemistry, University of Kerala, Kariavattom Campus, Thiruvananthapuram, 695581 India
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Zhang X, Gong C, Wang X, Wei Z, Guo W. A Bioactive Gelatin-Methacrylate Incorporating Magnesium Phosphate Cement for Bone Regeneration. Biomedicines 2024; 12:228. [PMID: 38275399 PMCID: PMC10813803 DOI: 10.3390/biomedicines12010228] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2023] [Revised: 01/12/2024] [Accepted: 01/16/2024] [Indexed: 01/27/2024] Open
Abstract
Maintaining proper mechanical strength and tissue volume is important for bone growth at the site of a bone defect. In this study, potassium magnesium phosphate hexahydrate (KMgPO4·6H2O, MPC) was applied to gelma-methacrylate hydrogel (GelMA) to prepare GelMA/MPC composites (GMPCs). Among these, 5 GMPC showed the best performance in vivo and in vitro. These combinations significantly enhanced the mechanical strength of GelMA and regulated the degradation and absorption rate of MPC. Considerably better mechanical properties were noted in 5 GMPC compared with other concentrations. Better bioactivity and osteogenic ability were also found in 5 GMPC. Magnesium ions (Mg2+) are bioactive and proven to promote bone tissue regeneration, in which the enhancement efficiency is closely related to Mg2+ concentrations. These findings indicated that GMPCs that can release Mg2+ are effective in the treatment of bone defects and hold promise for future in vivo applications.
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Affiliation(s)
| | | | | | | | - Weichun Guo
- Department of Orthopedics, Renmin Hospital of Wuhan University, Wuhan 430060, China; (X.Z.); (C.G.); (X.W.); (Z.W.)
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3
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Tsai MH, Megat Abdul Wahab R, Zainal Ariffin SH, Azmi F, Yazid F. Enhanced Osteogenesis Potential of MG-63 Cells through Sustained Delivery of VEGF via Liposomal Hydrogel. Gels 2023; 9:562. [PMID: 37504441 PMCID: PMC10378863 DOI: 10.3390/gels9070562] [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: 06/27/2023] [Revised: 07/08/2023] [Accepted: 07/09/2023] [Indexed: 07/29/2023] Open
Abstract
The challenges of using VEGF to promote osteoblastic differentiation include a short half-life and a narrow therapeutic window. A carrier system combining hydrogel and liposomes may improve the therapeutic efficacy of VEGF for bone regeneration. This study aimed to investigate the effects of delivery of VEGF via liposomal hydrogel on the osteogenesis of MG-63 cells. Liposomal hydrogel scaffold was fabricated and then characterized in terms of the morphological and chemical properties using FESEM and FTIR. In 2.5D analysis, the MG-63 cells were cultured on liposomal hydrogel + VEGF as the test group. The osteogenic effects of VEGF were compared with the control groups, i.e., hydrogel without liposomes + VEGF, osteogenic medium (OM) supplemented with a bolus of VEGF, and OM without VEGF. Cell morphology, viability, and differentiation and mineralization potential were investigated using FESEM, MTT assay, ALP activity, and Alizarin red staining. The characterization of scaffold showed no significant differences in the morphological and chemical properties between hydrogel with and without liposomes (p > 0.05). The final 2.5D culture demonstrated that cell proliferation, differentiation, and mineralization were significantly enhanced in the liposomal hydrogel + VEGF group compared with the control groups (p < 0.05). In conclusion, liposomal hydrogel can be used to deliver VEGF in a sustained manner in order to enhance the osteogenesis of MG-63 cells.
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Affiliation(s)
- Milton Hongli Tsai
- Discipline of Orthodontics, Department of Family Oral Health, Faculty of Dentistry, Universiti Kebangsaan Malaysia, Kuala Lumpur 50300, Malaysia
| | - Rohaya Megat Abdul Wahab
- Discipline of Orthodontics, Department of Family Oral Health, Faculty of Dentistry, Universiti Kebangsaan Malaysia, Kuala Lumpur 50300, Malaysia
| | - Shahrul Hisham Zainal Ariffin
- Department of Biological Sciences and Biotechnology, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, Bangi 43600, Malaysia
| | - Fazren Azmi
- Faculty of Pharmacy, Universiti Kebangsaan Malaysia, Kuala Lumpur 50300, Malaysia
| | - Farinawati Yazid
- Discipline of Pediatric Dentistry, Department of Family Oral Health, Faculty of Dentistry, Universiti Kebangsaan Malaysia, Kuala Lumpur 50300, Malaysia
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4
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Lee SH, Kang MS, Jeon S, Jo HJ, Hong SW, Kim B, Han DW. 3D bioprinting of human mesenchymal stem cells-laden hydrogels incorporating MXene for spontaneous osteodifferentiation. Heliyon 2023; 9:e14490. [PMID: 36994406 PMCID: PMC10040522 DOI: 10.1016/j.heliyon.2023.e14490] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2022] [Revised: 03/07/2023] [Accepted: 03/08/2023] [Indexed: 03/16/2023] Open
Abstract
Contemporary advances in three-dimensional (3D) bioprinting technologies have enabled the fabrication of tailored live 3D tissue mimetics. Furthermore, the development of advanced bioink materials has been highlighted to accurately reproduce the composition of a native extracellular matrix and mimic the intrinsic properties of laden cells. Recent research has shown that MXene is one of promising nanobiomaterials with osteogenic activity for bone grafts and scaffolds due to its unique atomic structure of three titanium layers between two carbon layers. In this study, the MXene-incorporated gelatin methacryloyl (GelMA) and hyaluronic acid methacryloyl (HAMA) (i.e., GelMA/HAMA-MXene) bioinks were prepared to explore if they have the potential to enable the spontaneous osteodifferentiation of human mesenchymal stem cells (hMSCs) when the hMSCs-laden GelMA/HAMA-MXene bioinks were 3D printed. The physicochemical and rheological characteristics of the GelMA/HAMA-MXene hydrogels were proven to be unprecedentedly favorable supportive matrices suited for the growth and survival of hMSCs. Furthermore, hMSCs were shown to spontaneously differentiate into osteoblasts within GelMA-HAMA/MXene composites to provide favorable microenvironments for osteogenesis. Therefore, our results suggest that the remarkable biofunctional advantages of the MXene-incorporated GelMA/HAMA bioink can be utilized in a wide range of strategies for the development of effective scaffolds in bone tissue regeneration.
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Affiliation(s)
- Seok Hyun Lee
- Department of Cogno-Mechatronics Engineering, College of Nanoscience and Nanotechnology, Pusan National University, Busan, 46241, Republic of Korea
| | - Moon Sung Kang
- Department of Cogno-Mechatronics Engineering, College of Nanoscience and Nanotechnology, Pusan National University, Busan, 46241, Republic of Korea
| | - Sangheon Jeon
- Department of Cogno-Mechatronics Engineering, College of Nanoscience and Nanotechnology, Pusan National University, Busan, 46241, Republic of Korea
| | - Hyo Jung Jo
- Department of Cogno-Mechatronics Engineering, College of Nanoscience and Nanotechnology, Pusan National University, Busan, 46241, Republic of Korea
| | - Suck Won Hong
- Department of Cogno-Mechatronics Engineering, College of Nanoscience and Nanotechnology, Pusan National University, Busan, 46241, Republic of Korea
- Engineering Research Center for Color-Modulated Extra-Sensory Perception Technology, Pusan National University, Busan, 46241, Republic of Korea
| | - Bongju Kim
- Dental Life Science Research Institute / Innovation Research & Support Center for Dental Science, Seoul 8 National University Dental Hospital, Seoul, 03080, Republic of Korea
- Corresponding author.
| | - Dong-Wook Han
- Department of Cogno-Mechatronics Engineering, College of Nanoscience and Nanotechnology, Pusan National University, Busan, 46241, Republic of Korea
- BIO-IT Fusion Technology Research Institute, Pusan National University, Busan, 46241, Republic of Korea
- Corresponding author. Department of Cogno-Mechatronics Engineering, College of Nanoscience and Nanotechnology, Pusan National University, Busan 46241, Republic of Korea.
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Bioglass obtained via one-pot synthesis as osseointegrative drug delivery system. Int J Pharm 2023; 633:122610. [PMID: 36669580 DOI: 10.1016/j.ijpharm.2023.122610] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2022] [Revised: 01/03/2023] [Accepted: 01/11/2023] [Indexed: 01/19/2023]
Abstract
Osseointegration is a fundamental process during which implantable biomaterial integrates with host bone tissue. The surgical procedure of biomaterial implantation is highly associated with the risk of bacterial infection. Thus, the research continues for biodegradable bone void fillers which are able to stimulate the bone tissue regeneration and locally deliver the antibacterial agent. Herein, we obtained bifunctional bioglass (BG) using novel, preoptimized, rapid one-pot synthesis. Following the ISO Standards, the influence of the obtained BG on osteoblast-mediated phenomena, such as osteoconduction and osteoinduction was assessed and compared to two commercial materials: bioactive glass powder 45S and bioactive glass powder 85S. Direct-contact tests revealed osteoblast adhesion to BG particles; whereas, tests on extracts confirmed high viability of cells incubated with BG extract. Analyses of gene expression, alkaline phosphatase activity, and calcium phosphates deposition confirmed the stimulation of early and late stages of osteoblast differentiation and mineralization. Additionally, an extended evaluation of intracellular calcium fluctuations revealed a possible correlation between osteoblast calcium uptake and extracellular matrix mineralization. Moreover, proposed bioglass exhibited satisfactory doxycycline adsorption capacity and release profile. The obtained results confirmed the bifunctionality of the proposed BG and indicated its potential as osseointegrative bone drug delivery system.
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Zhou YH, Guo Y, Zhu JY, Tang CY, Zhao YQ, Zhou HD. Spheroid co-culture of BMSCs with osteocytes yields ring-shaped bone-like tissue that enhances alveolar bone regeneration. Sci Rep 2022; 12:14636. [PMID: 36030312 PMCID: PMC9420131 DOI: 10.1038/s41598-022-18675-x] [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: 04/24/2022] [Accepted: 08/17/2022] [Indexed: 11/09/2022] Open
Abstract
Oral and maxillofacial bone defects severely impair appearance and function, and bioactive materials are urgently needed for bone regeneration. Here, we spheroid co-cultured green fluorescent protein (GFP)-labeled bone marrow stromal cells (BMSCs) and osteocyte-like MLO-Y4 cells in different ratios (3:1, 2:1, 1:1, 1:2, 1:3) or as monoculture. Bone-like tissue was formed in the 3:1, 2:1, and 1:1 co-cultures and MLO-Y4 monoculture. We found a continuous dense calcium phosphate structure and spherical calcium phosphate similar to mouse femur with the 3:1, 2:1, and 1:1 co-cultures, along with GFP-positive osteocyte-like cells encircled by an osteoid-like matrix similar to cortical bone. Flake-like calcium phosphate, which is more mature than spherical calcium phosphate, was found with the 3:1 and 2:1 co-cultures. Phosphorus and calcium signals were highest with 3:1 co-culture, and this bone-like tissue was ring-shaped. In a murine tooth extraction model, implantation of the ring-shaped bone-like tissue yielded more bone mass, osteoid and mineralized bone, and collagen versus no implantation. This tissue fabricated by spheroid co-culturing BMSCs with osteocytes yields an internal structure and mineral composition similar to mouse femur and could promote bone formation and maturation, accelerating regeneration. These findings open the way to new strategies in bone tissue engineering.
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Affiliation(s)
- Ying-Hui Zhou
- National Clinical Research Center for Metabolic Diseases, Hunan Provincial Key Laboratory of Metabolic Bone Diseases, and Department of Metabolism and Endocrinology, The Second Xiangya Hospital of Central South University, Changsha, 410011, Hunan, China.,Department of Stomatology, The Second Xiangya Hospital, Central South University, Changsha, 410011, Hunan, China
| | - Yue Guo
- National Clinical Research Center for Metabolic Diseases, Hunan Provincial Key Laboratory of Metabolic Bone Diseases, and Department of Metabolism and Endocrinology, The Second Xiangya Hospital of Central South University, Changsha, 410011, Hunan, China.,Department of Stomatology, The Second Xiangya Hospital, Central South University, Changsha, 410011, Hunan, China
| | - Jia-Yu Zhu
- National Clinical Research Center for Metabolic Diseases, Hunan Provincial Key Laboratory of Metabolic Bone Diseases, and Department of Metabolism and Endocrinology, The Second Xiangya Hospital of Central South University, Changsha, 410011, Hunan, China
| | - Chen-Yi Tang
- Department of Nutrition, The Third Xiangya Hospital of Central South University, Changsha, 410013, Hunan, China
| | - Ya-Qiong Zhao
- Department of Stomatology, The Second Xiangya Hospital, Central South University, Changsha, 410011, Hunan, China
| | - Hou-De Zhou
- National Clinical Research Center for Metabolic Diseases, Hunan Provincial Key Laboratory of Metabolic Bone Diseases, and Department of Metabolism and Endocrinology, The Second Xiangya Hospital of Central South University, Changsha, 410011, Hunan, China.
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7
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Prasadh S, Gupta M, Wong R. In vitro cytotoxicity and osteogenic potential of quaternary Mg-2Zn-1Ca/X-Mn alloys for craniofacial reconstruction. Sci Rep 2022; 12:8259. [PMID: 35585104 PMCID: PMC9117210 DOI: 10.1038/s41598-022-12490-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2021] [Accepted: 04/28/2022] [Indexed: 12/14/2022] Open
Abstract
Cytotoxicity of any biomedical material needs to be investigated for successful application within the human tissues. In this study, manganese in low amounts of 0.3, 0.5 and 0.7 (wt.%) was added to Mg2Zn1Ca alloy using Disintegrated Melt Deposition (DMD) followed by hot extrusion and the extruded alloys were tested for in vitro cytocompatibility using cell viability assays (CCK-8, LDH enzyme release assay, cell cytoskeleton and cell morphology) and in vitro osteogenic potential was evaluated using ALP, Alizarin Red and RT-PCR assays. Addition of manganese improved the cell viability and osteogenic potential in variable concentrations. The Mg2Zn1Ca /0.3 Mn and Mg2Zn1Ca /0.5 Mn alloys showed increased cell viability percentage compared to Mg2Zn1Ca alloys. The cytotoxicity percentage at the end of 24 h culture for Mg2Zn1Ca /0.3 Mn alloys showed lesser cytotoxicity percentage (~ 8%) when compared to the Mg2Zn1Ca /0.5 Mn (~ 13%) and Mg2Zn1Ca /0.7 Mn (~ 16%) samples. All the alloys showed good initial cell attachment, osteogenic potential and cell spreading. The results of this study validates great potential of Mg2Zn1Ca alloys with manganese addition and exhibited great potential for to be used as temporary implant materials in craniofacial reconstruction.
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Affiliation(s)
- Somasundaram Prasadh
- Faculty of Dentistry, National University of Singapore, 9 Lower Kent Ridge Road, Singapore, 119083, Singapore
| | - Manoj Gupta
- Department of Mechanical Engineering, National University of Singapore, 9 Engineering Drive 1, Singapore, 117576, Singapore
| | - Raymond Wong
- Faculty of Dentistry, National University of Singapore, 9 Lower Kent Ridge Road, Singapore, 119083, Singapore.
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Zhang C, Xia D, Li J, Zheng Y, Weng B, Mao H, Mei J, Wu T, Li M, Zhao J. BMSCs and Osteoblast-Engineered ECM Synergetically Promotes Osteogenesis and Angiogenesis in an Ectopic Bone Formation Model. Front Bioeng Biotechnol 2022; 10:818191. [PMID: 35127662 PMCID: PMC8814575 DOI: 10.3389/fbioe.2022.818191] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2021] [Accepted: 01/04/2022] [Indexed: 12/16/2022] Open
Abstract
Bone mesenchymal stem cells (BMSCs) have been extensively used in bone tissue engineering because of their potential to differentiate into multiple cells, secrete paracrine factors, and attenuate immune responses. Biomaterials are essential for the residence and activities of BMSCs after implantation in vivo. Recently, extracellular matrix (ECM) modification with a favorable regenerative microenvironment has been demonstrated to be a promising approach for cellular activities and bone regeneration. The aim of the present study was to evaluate the effects of BMSCs combined with cell-engineered ECM scaffolds on osteogenesis and angiogenesis in vivo. The ECM scaffolds were generated by osteoblasts on the small intestinal submucosa (SIS) under treatment with calcium (Ca)-enriched medium and icariin (Ic) after decellularization. In a mouse ectopic bone formation model, the SIS scaffolds were demonstrated to reduce the immune response, and lower the levels of immune cells compared with those in the sham group. Ca/Ic-ECM modification inhibited the degradation of the SIS scaffolds in vivo. The generated Ca/Ic-SIS scaffolds ectopically promoted osteogenesis according to the results of micro-CT and histological staining. Moreover, BMSCs on Ca/Ic-SIS further increased the bone volume percentage (BV/TV) and bone density. Moreover, angiogenesis was also enhanced by the Ca/Ic-SIS scaffolds, resulting in the highest levels of neovascularization according to the data ofCD31 staining. In conclusion, osteoblast-engineered ECM under directional induction is a promising strategy to modify biomaterials for osteogenesis and angiogenesis. BMSCs synergetically improve the properties of ECM constructs, which may contribute to the repair of large bone defects.
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Affiliation(s)
- Chi Zhang
- Zhejiang Key Laboratory of Pathophysiology, School of Medicine, Ningbo University, Ningbo, China
- Medical Research Center, Ningbo City First Hospital, Ningbo, China
| | - Dongdong Xia
- Orthopedic Department, Ningbo City First Hospital, Ningbo, China
| | - Jiajing Li
- Zhejiang Key Laboratory of Pathophysiology, School of Medicine, Ningbo University, Ningbo, China
| | - Yanan Zheng
- Zhejiang Key Laboratory of Pathophysiology, School of Medicine, Ningbo University, Ningbo, China
| | - Bowen Weng
- Zhejiang Key Laboratory of Pathophysiology, School of Medicine, Ningbo University, Ningbo, China
| | - Haijiao Mao
- Department of Orthopaedic Surgery, the Affiliated Hospital of Medical School, Ningbo University, Ningbo, China
| | - Jing Mei
- Medical Research Center, Ningbo City First Hospital, Ningbo, China
| | - Tao Wu
- Cardiovascular Center, the Affiliated Hospital of Medical School, Ningbo University, Ningbo, China
| | - Mei Li
- Zhejiang Key Laboratory of Pathophysiology, School of Medicine, Ningbo University, Ningbo, China
- Ningbo Institute of Medical Sciences, Ningbo, China
- *Correspondence: Mei Li, ; Jiyuan Zhao,
| | - Jiyuan Zhao
- Zhejiang Key Laboratory of Pathophysiology, School of Medicine, Ningbo University, Ningbo, China
- *Correspondence: Mei Li, ; Jiyuan Zhao,
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Nabavinia M, Khoshfetrat AB, Naderi-Meshkin H. Nano-hydroxyapatite-alginate-gelatin microcapsule as a potential osteogenic building block for modular bone tissue engineering. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2018; 97:67-77. [PMID: 30678955 DOI: 10.1016/j.msec.2018.12.033] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/28/2018] [Revised: 11/08/2018] [Accepted: 12/10/2018] [Indexed: 01/01/2023]
Abstract
To develop osteogenic building blocks for modular bone tissue engineering applications, influence of gelatin as cell adhesive molecule and nano-hydroxyapatite (nHA) as osteoconductive component was examined on alginate-based hydrogel properties and microencapsulated osteoblast-like cell behavior by using factorial experimental design technique. nHA and alginate showed a statistically significant impact on swelling reduction, and improvement of stability and mechanical strength of hydrogels, respectively. Gelatin influence, however, was in a reverse manner. nHA played imperative roles in promoting microencapsulated osteoblastic cell proliferation and function due to its bioactivity and mechanical strength improvement of hydrogels to the modulus range of mineralized bone tissue in vivo. The results and their statistical analysis also revealed the importance of interaction effect of gelatin and nHA. Proliferation and osteogenic function of the cells fluctuated with increasing gelatin concentration of microcapsules in the presence of nHA, demonstrating that hydrogel properties should be balanced to provide an efficient 3D osteoconductive microcapsule. Alginate (1%)-gelatin (2.5%)-nHA (0.5%) microcapsule with compressive modulus of 0.19 MPa ± 0.02, swelling ratio of 52% ± 8 (24 h) and degradation rate of 12% ± 4 (96 h) revealed a maximum performance for the cell proliferation and function, indicating a potential microcapsule composition to prepare building blocks for modular bone tissue engineering.
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Affiliation(s)
- Mahboubeh Nabavinia
- Chemical Engineering Faculty, Sahand University of Technology, Tabriz 51335-1996, Iran; Stem Cell and Tissue Engineering Research Laboratory, Sahand University of Technology, Tabriz 51335-1996, Iran
| | - Ali Baradar Khoshfetrat
- Chemical Engineering Faculty, Sahand University of Technology, Tabriz 51335-1996, Iran; Stem Cell and Tissue Engineering Research Laboratory, Sahand University of Technology, Tabriz 51335-1996, Iran.
| | - Hojjat Naderi-Meshkin
- Stem Cell and Regenerative Medicine Research Group, Academic Center of Education, Culture, and Research (ACECR), Khorasan Razavi Branch, Mashhad, Iran
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Irmak G, Demirtaş TT, Gümüşderelioǧlu M. Highly Methacrylated Gelatin Bioink for Bone Tissue Engineering. ACS Biomater Sci Eng 2018; 5:831-845. [DOI: 10.1021/acsbiomaterials.8b00778] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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11
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Ojansivu M, Mishra A, Vanhatupa S, Juntunen M, Larionova A, Massera J, Miettinen S. The effect of S53P4-based borosilicate glasses and glass dissolution products on the osteogenic commitment of human adipose stem cells. PLoS One 2018; 13:e0202740. [PMID: 30153295 PMCID: PMC6112657 DOI: 10.1371/journal.pone.0202740] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2018] [Accepted: 08/07/2018] [Indexed: 01/09/2023] Open
Abstract
Despite the good performance of silicate bioactive glasses in bone regeneration, there is considerable potential to enhance their properties by chemical modifications. In this study, S53P4-based borosilicate glasses were synthesized and their dissolution profile was studied in simulated body fluid by assessing pH change, ion release and conversion to hydroxyapatite. The viability, proliferation, attachment, osteogenesis and endothelial marker expression of human adipose stem cells (hASCs) was evaluated upon direct culture on glass discs and in the extract medium. This is the first study evaluating cell behavior in response to borosilicate glasses based on S53P4 (commercially available as BonAlive®). Replacing silicate with borate in S53P4 increased the glass reactivity. Despite the good viability of hASCs under all conditions, direct culture of cells on borosilicate discs and in undiluted extract medium reduced cell proliferation. This was accompanied with changes in cell morphology. Regarding osteogenic commitment, alkaline phosphatase activity was significantly reduced by the borosilicate glass discs and extracts, whereas the expression of osteogenic markers RUNX2a, OSTERIX, DLX5 and OSTEOPONTIN was upregulated. There was also a borosilicate glass-induced increase in osteocalcin protein production. Moreover, osteogenic supplements containing borosilicate extracts significantly increased the mineral production in comparison to the osteogenic medium control. Interestingly, borosilicate glasses stimulated the expression of endothelial markers vWF and PECAM-1. To conclude, our results reveal that despite reducing hASC proliferation, S53P4-based borosilicate glasses and their dissolution products stimulate osteogenic commitment and upregulate endothelial markers, thus supporting their further evaluation for regenerative medicine.
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Affiliation(s)
- Miina Ojansivu
- Faculty of Medicine and Life Sciences and BioMediTech Institute, University of Tampere, Tampere, Finland
- Science Center, Tampere University Hospital, Tampere, Finland
| | - Ayush Mishra
- Faculty of Biomedical Science and Engineering and BioMediTech Institute, Tampere University of Technology, Tampere, Finland
| | - Sari Vanhatupa
- Faculty of Medicine and Life Sciences and BioMediTech Institute, University of Tampere, Tampere, Finland
- Science Center, Tampere University Hospital, Tampere, Finland
| | - Miia Juntunen
- Faculty of Medicine and Life Sciences and BioMediTech Institute, University of Tampere, Tampere, Finland
- Science Center, Tampere University Hospital, Tampere, Finland
| | - Antonina Larionova
- Faculty of Medicine and Life Sciences and BioMediTech Institute, University of Tampere, Tampere, Finland
- Science Center, Tampere University Hospital, Tampere, Finland
| | - Jonathan Massera
- Faculty of Biomedical Science and Engineering and BioMediTech Institute, Tampere University of Technology, Tampere, Finland
| | - Susanna Miettinen
- Faculty of Medicine and Life Sciences and BioMediTech Institute, University of Tampere, Tampere, Finland
- Science Center, Tampere University Hospital, Tampere, Finland
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12
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Lu T, Hixon KR, Ona WJ, Carletta MN, Garg K, Sell SA. An
in vitro
analysis of injectable methacrylated alginate cryogels incorporated with PRP targeting minimally invasive treatment of bone nonunion. Biomed Phys Eng Express 2018. [DOI: 10.1088/2057-1976/aad298] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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13
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Lee A, Langford CR, Rodriguez-Lorenzo LM, Thissen H, Cameron NR. Bioceramic nanocomposite thiol-acrylate polyHIPE scaffolds for enhanced osteoblastic cell culture in 3D. Biomater Sci 2018; 5:2035-2047. [PMID: 28726876 DOI: 10.1039/c7bm00292k] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Emulsion-templated (polyHIPE) scaffolds for bone tissue engineering were produced by photopolymerisation of a mixture of trimethylolpropane tris(3-mercaptopropionate) and dipentaerythritol penta-/hexa-acrylate in the presence of hydroxyapatite (HA) or strontium-modified hydroxyapatite (SrHA) nanoparticles. Porous and permeable polyHIPE materials were produced regardless of the type or incorporation level of the bioceramic, although higher loadings resulted in a larger average pore diameter. Inclusion of HA and SrHA into the scaffolds was confirmed by EDX-SEM, FTIR and XPS and quantified by thermogravimetry. Addition of HA to polyHIPE scaffolds significantly enhanced compressive strength (148-216 kPa) without affecting compressive modulus (2.34-2.58 MPa). The resulting materials were evaluated in vitro as scaffolds for the 3D culture of MG63 osteoblastic cells vs. a commercial 3D cell culture scaffold (Alvetex®). Cells were able to migrate throughout all scaffolds, achieving a high density by the end of the culture period (21 days). The presence of HA and in particular SrHA gave greatly enhanced cell proliferation, as determined by staining of histological sections and total protein assay (Bradford). Furthermore, Von Kossa and Alizarin Red staining demonstrated significant mineralisation from inclusion of bioceramics, even at the earliest time point (day 7). Production of alkaline phosphatase (ALP), an early osteogenic marker, was used to investigate the influence of HA and SrHA on cell function. ALP levels were significantly reduced on HA- and SrHA-modified scaffolds by day 7, which agrees with the observed early onset of mineralisation in the presence of the bioceramics. The presented data support our conclusions that HA and SrHA enhance osteoblastic cell proliferation on polyHIPE scaffolds and promote early mineralisation.
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Affiliation(s)
- Aaron Lee
- Department of Materials Science and Engineering, Monash University, 22 Alliance Lane, Clayton, VIC 3800, Australia.
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14
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Wu B, Siglreitmeier M, Debus C, Schwahn D, Cölfen H, Pipich V. Ionic Dependence of Gelatin Hydrogel Architecture Explored Using Small and Very Small Angle Neutron Scattering Technique. Macromol Biosci 2018; 18:e1800018. [PMID: 29736987 DOI: 10.1002/mabi.201800018] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2018] [Revised: 03/14/2018] [Indexed: 11/11/2022]
Abstract
The hierarchical structure of gelatin hydrogels mimics a natural extracellular matrix and provides an optimized microenvironment for the growth of 3D structured tissue analogs. In the presence of metal ions, gelatin hydrogels exhibit various mechanical properties that are correlated with the molecular interactions and the hierarchical structure. The structure and structural response of gelatin hydrogels to variation of gelatin concentration, pH, or addition of metal ions are explored by small and very small angle neutron scattering over broad length scales. The measurements of the hydrogels reveal the existence of a two-level structure of colloid-like large clusters and a 3D cage-like gel network. In the presence of Fe3+ ions the hydrogels show a highly dense and stiff network, while Ca2+ ions have an opposite effect. The results provide important structural insight for improvement of the design of gelatin based hydrogels and are therefore suitable for various applications.
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Affiliation(s)
- Baohu Wu
- Jülich Centre for Neutron Science (JCNS) at Heinz Maier-Leibnitz Zentrum (MLZ), Forschungszentrum Jülich, Lichtenbergstr. 1, 85748, Garching, Germany.,Department of Chemistry, Physical Chemistry, University of Konstanz, Universitaetsstr 10, Konstanz, 78457, Germany
| | - Maria Siglreitmeier
- Department of Chemistry, Physical Chemistry, University of Konstanz, Universitaetsstr 10, Konstanz, 78457, Germany
| | - Christian Debus
- Department of Chemistry, Physical Chemistry, University of Konstanz, Universitaetsstr 10, Konstanz, 78457, Germany
| | - Dietmar Schwahn
- Forschungs-Neutronenquelle Heinz Maier-Leibnitz (FRM II), Technische Universität München, Lichtenbergstr 1, Garching, 85748, Germany
| | - Helmut Cölfen
- Department of Chemistry, Physical Chemistry, University of Konstanz, Universitaetsstr 10, Konstanz, 78457, Germany
| | - Vitaliy Pipich
- Jülich Centre for Neutron Science (JCNS) at Heinz Maier-Leibnitz Zentrum (MLZ), Forschungszentrum Jülich, Lichtenbergstr. 1, 85748, Garching, Germany
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15
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Li M, Zhang C, Mao Y, Zhong Y, Zhao J. A Cell-Engineered Small Intestinal Submucosa-Based Bone Mimetic Construct for Bone Regeneration. Tissue Eng Part A 2018; 24:1099-1111. [PMID: 29318958 DOI: 10.1089/ten.tea.2017.0407] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023] Open
Abstract
Extracellular matrix (ECM)-ornamented biomaterials have attracted attention due to their high potential to improve the biofunctionality of original materials. It is thought that ECM with a bone mimetic microenvironment generated by the specific induction of osteoblasts would be more beneficial for bone regeneration than a regular ECM. In this study, we developed an osteogenic and mineralized ECM construct (Os/M-ECM-SIS) under the guidance of osteoblasts on a small intestinal submucosa (SIS) scaffold cotreated with icariin and calcium. The generated Os/M-ECM-SIS scaffolds exhibited similar morphology and inorganic components as natural bone and higher mechanical strength than ECM-SIS. Cell adhesion, proliferation, and differentiation of osteoblasts and fibroblasts were also enhanced in the cells cultured on the Os/M-ECM-SIS scaffolds. The Os/M-ECM-SIS scaffolds even promoted transdifferentiation of fibroblasts with an upregulation of osteogenic differentiation markers. In a calvarial defect model, new bone formation was greatly enhanced in defects implanted with the Os/M-ECM-SIS scaffolds compared with ECM-SIS scaffolds. Further study showed that the Os/M-ECM-SIS scaffolds promoted bone regeneration in vitro and in vivo via the Bmp/Smad-signaling pathway. Thus, this work proposes a valuable method for generating a mineralized bone mimetic scaffold with SIS as off-the-shelf bone graft substitute that provides an excellent osteogenic microenvironment, making it suitable for application in bone tissue engineering.
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Affiliation(s)
- Mei Li
- 1 Zhejiang Key Laboratory of Pathophysiology, Medical School, Ningbo University , Ningbo, People's Republic of China .,2 Ningbo Institute of Medical Sciences , Ningbo, People's Republic of China
| | - Chi Zhang
- 1 Zhejiang Key Laboratory of Pathophysiology, Medical School, Ningbo University , Ningbo, People's Republic of China
| | - Yuxing Mao
- 1 Zhejiang Key Laboratory of Pathophysiology, Medical School, Ningbo University , Ningbo, People's Republic of China
| | - Yi Zhong
- 1 Zhejiang Key Laboratory of Pathophysiology, Medical School, Ningbo University , Ningbo, People's Republic of China
| | - Jiyuan Zhao
- 1 Zhejiang Key Laboratory of Pathophysiology, Medical School, Ningbo University , Ningbo, People's Republic of China
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16
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Aquino-Martínez R, Artigas N, Gámez B, Rosa JL, Ventura F. Extracellular calcium promotes bone formation from bone marrow mesenchymal stem cells by amplifying the effects of BMP-2 on SMAD signalling. PLoS One 2017; 12:e0178158. [PMID: 28542453 PMCID: PMC5444778 DOI: 10.1371/journal.pone.0178158] [Citation(s) in RCA: 57] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2016] [Accepted: 05/09/2017] [Indexed: 11/23/2022] Open
Abstract
Understanding the molecular events that regulate osteoblast differentiation is essential for the development of effective approaches to bone regeneration. In this study, we analysed the osteoinductive properties of extracellular calcium in bone marrow-derived mesenchymal stem cell (BM-MSC) differentiation. We cultured BM-MSCs in 3D gelatin scaffolds with Ca2+ and BMP-2 as osteoinductive agents. Early and late osteogenic gene expression and bone regeneration in a calvarial critical-size defect model demonstrate that extracellular Ca2+ enhances the effects of BMP-2 on Osteocalcin, Runx2 and Osterix expression and promotes bone regeneration in vivo. Moreover, we analysed the molecular mechanisms involved and observed an antagonistic effect between Ca2+ and BMP-2 on SMAD1/5, ERK and S6K signalling after 24 hours. More importantly, a cooperative effect between Ca2+ and BMP-2 on the phosphorylation of SMAD1/5, S6, GSK3 and total levels of β-CATENIN was observed at a later differentiation time (10 days). Furthermore, Ca2+ alone favoured the phosphorylation of SMAD1, which correlates with the induction of Bmp2 and Bmp4 gene expression. These data suggest that Ca2+ and BMP-2 cooperate and promote an autocrine/paracrine osteogenic feed-forward loop. On the whole, these results demonstrate the usefulness of calcium-based bone grafts or the addition of exogenous Ca2+ in bone tissue engineering.
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Affiliation(s)
- Rubén Aquino-Martínez
- Departament de Ciències Fisiològiques, Universitat de Barcelona, IDIBELL, L’Hospitalet de Llobregat, Spain
| | - Natalia Artigas
- Departament de Ciències Fisiològiques, Universitat de Barcelona, IDIBELL, L’Hospitalet de Llobregat, Spain
| | - Beatriz Gámez
- Departament de Ciències Fisiològiques, Universitat de Barcelona, IDIBELL, L’Hospitalet de Llobregat, Spain
| | - José Luis Rosa
- Departament de Ciències Fisiològiques, Universitat de Barcelona, IDIBELL, L’Hospitalet de Llobregat, Spain
| | - Francesc Ventura
- Departament de Ciències Fisiològiques, Universitat de Barcelona, IDIBELL, L’Hospitalet de Llobregat, Spain
- * E-mail:
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17
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Li Z, Thompson BC, Dong Z, Khor KA. Optical and biological properties of transparent nanocrystalline hydroxyapatite obtained through spark plasma sintering. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2016; 69:956-66. [DOI: 10.1016/j.msec.2016.08.002] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/09/2016] [Revised: 07/07/2016] [Accepted: 08/02/2016] [Indexed: 11/26/2022]
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18
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Zeng RC, Cui LY, Jiang K, Liu R, Zhao BD, Zheng YF. In Vitro Corrosion and Cytocompatibility of a Microarc Oxidation Coating and Poly(L-lactic acid) Composite Coating on Mg-1Li-1Ca Alloy for Orthopedic Implants. ACS APPLIED MATERIALS & INTERFACES 2016; 8:10014-10028. [PMID: 27022831 DOI: 10.1021/acsami.6b00527] [Citation(s) in RCA: 89] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Manipulating the degradation rate of biomedical magnesium alloys poses a challenge. The characteristics of a microarc oxidation (MAO), prepared in phytic acid, and poly(L-lactic acid) (PLLA) composite coating, fabricated on a novel Mg-1Li-1Ca alloy, were studied through field emission scanning electron microscopy (FE-SEM), electron probe X-ray microanalysis (EPMA), energy dispersive X-ray spectroscopy (EDS) and X-ray diffraction (XRD). The corrosion behaviors of the samples were evaluated via hydrogen evolution, potentiodynamic polarization and electrochemical impedance spectroscopy in Hanks' solution. The results indicated that the MAO/PLLA composite coatings significantly enhanced the corrosion resistance of the Mg-1Li-1Ca alloy. MTT and ALP assays using MC3T3 osteoblasts indicated that the MAO/PLLA coatings greatly improved the cytocompatibility, and the morphology of the cells cultured on different samples exhibited good adhesion. Hemolysis tests showed that the composite coatings endowed the Mg-1Li-1Ca alloys with a low hemolysis ratio. The increased solution pH resulting from the corrosion of magnesium could be tailored by the degradation of PLLA. The degradation mechanism of the composite coatings was discussed. The MAO/PLLA composite coating may be appropriate for applications on degradable Mg-based orthopedic implants.
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Affiliation(s)
- Rong-Chang Zeng
- College of Materials Science and Engineering, Shandong University of Science and Technology , Qingdao 266590, China
- State Key Laboratory of Mining Disaster Prevention and Control Co-founded by Shandong Province and the Ministry of Science and Technology, Shandong University of Science and Technology , Qingdao 266590, China
| | - Lan-yue Cui
- College of Materials Science and Engineering, Shandong University of Science and Technology , Qingdao 266590, China
- State Key Laboratory of Mining Disaster Prevention and Control Co-founded by Shandong Province and the Ministry of Science and Technology, Shandong University of Science and Technology , Qingdao 266590, China
| | - Ke Jiang
- College of Materials Science and Engineering, Shandong University of Science and Technology , Qingdao 266590, China
- State Key Laboratory of Mining Disaster Prevention and Control Co-founded by Shandong Province and the Ministry of Science and Technology, Shandong University of Science and Technology , Qingdao 266590, China
| | - Rui Liu
- Affiliated Hospital of Qingdao University, Qingdao University , Qingdao 266590, China
| | - Bao-Dong Zhao
- Affiliated Hospital of Qingdao University, Qingdao University , Qingdao 266590, China
| | - Yu-Feng Zheng
- State Key Laboratory for Turbulence and Complex Systems and Department of Materials Science and Engineering, College of Engineering, Peking University , Beijing 100871, China
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19
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Agarwal S, Morshed M, Labour MN, Hoey D, Duffy B, Curtin J, Jaiswal S. Enhanced corrosion protection and biocompatibility of a PLGA–silane coating on AZ31 Mg alloy for orthopaedic applications. RSC Adv 2016. [DOI: 10.1039/c6ra24382g] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
This paper reports a multi-step procedure to fabricate a novel corrosion resistant and biocompatible PLGA–silane coating on the magnesium (Mg) alloy AZ31.
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Affiliation(s)
- Sankalp Agarwal
- Centre for Research in Engineering and Surface Technology
- FOCAS Institute
- Dublin Institute of Technology
- Dublin 8
- Ireland
| | - Muhammad Morshed
- Centre for Research in Engineering and Surface Technology
- FOCAS Institute
- Dublin Institute of Technology
- Dublin 8
- Ireland
| | - Marie-Noelle Labour
- Trinity Centre for Bioengineering
- Trinity Biomedical Sciences Institute
- Trinity College Dublin
- Dublin 2
- Ireland
| | - David Hoey
- Trinity Centre for Bioengineering
- Trinity Biomedical Sciences Institute
- Trinity College Dublin
- Dublin 2
- Ireland
| | - Brendan Duffy
- Centre for Research in Engineering and Surface Technology
- FOCAS Institute
- Dublin Institute of Technology
- Dublin 8
- Ireland
| | - James Curtin
- School of Food Science and Environmental Health
- Dublin Institute of Technology
- Dublin 1
- Ireland
| | - Swarna Jaiswal
- Centre for Research in Engineering and Surface Technology
- FOCAS Institute
- Dublin Institute of Technology
- Dublin 8
- Ireland
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20
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Ojansivu M, Vanhatupa S, Björkvik L, Häkkänen H, Kellomäki M, Autio R, Ihalainen JA, Hupa L, Miettinen S. Bioactive glass ions as strong enhancers of osteogenic differentiation in human adipose stem cells. Acta Biomater 2015; 21:190-203. [PMID: 25900445 DOI: 10.1016/j.actbio.2015.04.017] [Citation(s) in RCA: 64] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2015] [Revised: 03/19/2015] [Accepted: 04/13/2015] [Indexed: 12/26/2022]
Abstract
Bioactive glasses are known for their ability to induce osteogenic differentiation of stem cells. To elucidate the mechanism of the osteoinductivity in more detail, we studied whether ionic extracts prepared from a commercial glass S53P4 and from three experimental glasses (2-06, 1-06 and 3-06) are alone sufficient to induce osteogenic differentiation of human adipose stem cells. Cells were cultured using basic medium or osteogenic medium as extract basis. Our results indicate that cells stay viable in all the glass extracts for the whole culturing period, 14 days. At 14 days the mineralization in osteogenic medium extracts was excessive compared to the control. Parallel to the increased mineralization we observed a decrease in the cell amount. Raman and Laser Induced Breakdown Spectroscopy analyses confirmed that the mineral consisted of calcium phosphates. Consistently, the osteogenic medium extracts also increased osteocalcin production and collagen Type-I accumulation in the extracellular matrix at 13 days. Of the four osteogenic medium extracts, 2-06 and 3-06 induced the best responses of osteogenesis. However, regardless of the enhanced mineral formation, alkaline phosphatase activity was not promoted by the extracts. The osteogenic medium extracts could potentially provide a fast and effective way to differentiate human adipose stem cells in vitro.
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Affiliation(s)
- Miina Ojansivu
- Adult Stem Cell Research Group, University of Tampere, Tampere, Finland; BioMediTech, University of Tampere and Tampere University of Technology, Tampere, Finland; Science Centre, Tampere University Hospital, Tampere, Finland.
| | - Sari Vanhatupa
- Adult Stem Cell Research Group, University of Tampere, Tampere, Finland; BioMediTech, University of Tampere and Tampere University of Technology, Tampere, Finland; Science Centre, Tampere University Hospital, Tampere, Finland
| | - Leena Björkvik
- Johan Gadolin Process Chemistry Centre, Åbo Akademi University, Turku, Finland
| | - Heikki Häkkänen
- Nanoscience Center, University of Jyväskylä, Jyväskylä, Finland
| | - Minna Kellomäki
- BioMediTech, University of Tampere and Tampere University of Technology, Tampere, Finland; Biomaterials and Tissue Engineering Group, Department of Electronics and Communications Engineering, Tampere University of Technology, Tampere, Finland
| | - Reija Autio
- School of Health Sciences, University of Tampere, Tampere, Finland
| | | | - Leena Hupa
- Johan Gadolin Process Chemistry Centre, Åbo Akademi University, Turku, Finland
| | - Susanna Miettinen
- Adult Stem Cell Research Group, University of Tampere, Tampere, Finland; BioMediTech, University of Tampere and Tampere University of Technology, Tampere, Finland; Science Centre, Tampere University Hospital, Tampere, Finland; Science Centre, Tampere University Hospital, Tampere, Finland
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21
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Xu L, Li Z, Liu SY, Xu SY, Ni GX. Asporin and osteoarthritis. Osteoarthritis Cartilage 2015; 23:933-9. [PMID: 25689697 DOI: 10.1016/j.joca.2015.02.011] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/20/2014] [Revised: 02/05/2015] [Accepted: 02/08/2015] [Indexed: 02/08/2023]
Abstract
OBJECTIVE To provide an overview of the literature describing the role of asporin, a small leucine-rich proteoglycan (SLRP), in osteoarthritis (OA). METHOD A literature search was performed and reviewed using the narrative approach. RESULTS As a class I SLRP member, asporin, is distinct from other SLRPs. Accumulating evidence demonstrates the involvement of asporin in OA pathogenesis. Many human studies have been conducted to explore the association between the D-repeat polymorphisms and OA susceptibility, but these yield inconsistent results. Possible mechanisms for the involvement of asporin in OA pathology include its influence on TGF-β (transforming growth factor-β) signaling pathways and collagen mineralization. To date, no studies were found to use an asporin-deficient animal model that would help to understand disease mechanisms. Many issues must be addressed to clarify the link between asporin and OA to provide a novel therapeutic strategy for OA, perhaps through controlling and modifying the TGF-β-ECM system. CONCLUSIONS Studies examined demonstrate the involvement of asporin in OA pathogenesis, and possible mechanisms by which asporin may be involved in this process have been proposed. However, large-scale interracial studies should be conducted to investigate the association between asporin and OA, and further investigations are needed to obtain a better understanding of the disease mechanism, develop novel therapeutic strategies, and explore new approaches for diagnosis of OA.
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Affiliation(s)
- L Xu
- Department of Orthopeadics and Traumatology, Nanfang Hospital, Southern Medical University, China
| | - Z Li
- Department of Orthopeadics and Traumatology, Nanfang Hospital, Southern Medical University, China
| | - S-Y Liu
- Department of Orthopeadics and Traumatology, Nanfang Hospital, Southern Medical University, China
| | - S-Y Xu
- Department of Orthopeadics and Traumatology, Nanfang Hospital, Southern Medical University, China
| | - G-X Ni
- Department of Orthopeadics and Traumatology, Nanfang Hospital, Southern Medical University, China.
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22
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Kim EC, Kim TH, Jung JH, Hong SO, Lee DW. Enhanced osteogenic differentiation of MC3T3-E1 on rhBMP-2-immobilized titanium via click reaction. Carbohydr Polym 2014; 103:170-8. [DOI: 10.1016/j.carbpol.2013.12.023] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2013] [Revised: 11/04/2013] [Accepted: 12/09/2013] [Indexed: 10/25/2022]
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23
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Heo DN, Ko WK, Bae MS, Lee JB, Lee DW, Byun W, Lee CH, Kim EC, Jung BY, Kwon IK. Enhanced bone regeneration with a gold nanoparticle–hydrogel complex. J Mater Chem B 2014; 2:1584-1593. [DOI: 10.1039/c3tb21246g] [Citation(s) in RCA: 159] [Impact Index Per Article: 15.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
A hybrid hydrogel composed of gelatin and gold nanoparticles (GNPs) was designed to evaluate the effect of new bone formation and proves itself to be useful as an implant material for treating defected bone tissues.
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Affiliation(s)
- Dong Nyoung Heo
- Department of Maxillofacial Biomedical Engineering and Institute of Oral Biology
- School of Dentistry
- Kyung Hee University
- Seoul 130-701, Republic of Korea
| | - Wan-Kyu Ko
- Department of Maxillofacial Biomedical Engineering and Institute of Oral Biology
- School of Dentistry
- Kyung Hee University
- Seoul 130-701, Republic of Korea
| | - Min Soo Bae
- Department of Maxillofacial Biomedical Engineering and Institute of Oral Biology
- School of Dentistry
- Kyung Hee University
- Seoul 130-701, Republic of Korea
| | - Jung Bok Lee
- Department of Maxillofacial Biomedical Engineering and Institute of Oral Biology
- School of Dentistry
- Kyung Hee University
- Seoul 130-701, Republic of Korea
| | - Deok-Won Lee
- Department of Oral and Maxillofacial Surgery
- Kyung Hee University Dental Hospital at Gang-dong
- Seoul 134-727, Republic of Korea
| | - Wook Byun
- Department of Maxillofacial Biomedical Engineering and Institute of Oral Biology
- School of Dentistry
- Kyung Hee University
- Seoul 130-701, Republic of Korea
| | - Chang Hoon Lee
- Department of Oriental Gynecology
- College of Oriental Medicine
- Kyung Hee University
- Seoul 130-701, Republic of Korea
| | - Eun-Cheol Kim
- Department of Maxillofacial Tissue Regeneration and Research Center for Tooth and Periodontal Regeneration (MRC)
- School of Dentistry
- Kyung Hee University
- Seoul 130-701, Republic of Korea
| | - Bock-Young Jung
- Department of Advanced General Dentistry
- College of Dentistry
- Yonsei University
- Seoul 120-752, Republic of Korea
| | - Il Keun Kwon
- Department of Maxillofacial Biomedical Engineering and Institute of Oral Biology
- School of Dentistry
- Kyung Hee University
- Seoul 130-701, Republic of Korea
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24
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Zarzhitsky S, Edri H, Azoulay Z, Cohen I, Ventura Y, Gitelman A, Rapaport H. The effect of pH and calcium ions on the stability of amphiphilic and anionicβ-sheet peptide hydrogels. Biopolymers 2013; 100:760-72. [DOI: 10.1002/bip.22282] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2013] [Revised: 03/20/2013] [Accepted: 04/08/2013] [Indexed: 11/07/2022]
Affiliation(s)
- Shlomo Zarzhitsky
- Avram and Stella Goldstein-Goren Department of Biotechnology Engineering; Ben-Gurion University of the Negev; Beer-Sheva 84105 Israel
- Ilse Katz Institute for Nano-Science and Technology (IKI); Ben-Gurion University of the Negev; Beer-Sheva 84105 Israel
| | - Hodaya Edri
- Avram and Stella Goldstein-Goren Department of Biotechnology Engineering; Ben-Gurion University of the Negev; Beer-Sheva 84105 Israel
| | - Ziv Azoulay
- Avram and Stella Goldstein-Goren Department of Biotechnology Engineering; Ben-Gurion University of the Negev; Beer-Sheva 84105 Israel
| | - Ifat Cohen
- Avram and Stella Goldstein-Goren Department of Biotechnology Engineering; Ben-Gurion University of the Negev; Beer-Sheva 84105 Israel
| | - Yvonne Ventura
- Avram and Stella Goldstein-Goren Department of Biotechnology Engineering; Ben-Gurion University of the Negev; Beer-Sheva 84105 Israel
| | - Anna Gitelman
- Avram and Stella Goldstein-Goren Department of Biotechnology Engineering; Ben-Gurion University of the Negev; Beer-Sheva 84105 Israel
| | - Hanna Rapaport
- Avram and Stella Goldstein-Goren Department of Biotechnology Engineering; Ben-Gurion University of the Negev; Beer-Sheva 84105 Israel
- Ilse Katz Institute for Nano-Science and Technology (IKI); Ben-Gurion University of the Negev; Beer-Sheva 84105 Israel
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25
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A layer-by-layer approach to natural polymer-derived bioactive coatings on magnesium alloys. Acta Biomater 2013; 9:8690-703. [PMID: 23707500 DOI: 10.1016/j.actbio.2013.05.013] [Citation(s) in RCA: 78] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2012] [Revised: 05/13/2013] [Accepted: 05/14/2013] [Indexed: 01/26/2023]
Abstract
The development of polyelectrolyte multilayered coatings on magnesium alloy substrates that can be used for controlled delivery of growth factors and required biomolecules from the surface of these degradable implants could have a significant impact in the field of bone tissue regeneration. The current work reports on the fabrication of multilayered coatings of alginate and poly-L-lysine on alkaline- and fluoride-pretreated AZ31 substrates using a layer-by-layer (LbL) technique under physiological conditions. Furthermore, these coatings were surface functionalized by chemical cross-linking and fibronectin immobilization, and the resultant changes in surface properties have been shown to influence the cellular activity of these multilayered films. The physicochemical characteristics of these coated substrates have been investigated using attenuated total reflectance Fourier transform infrared spectroscopy, atomic force microscopy, scanning electron microscopy and energy-dispersive X-ray spectroscopy. Cytocompatibility studies using MC3T3-E1 osteoblasts show that the fluoride-pretreated, cross-linked and fibronectin-immobilized LbL-coated substrates are more bioactive and less cytotoxic than the hydroxide-pretreated, cross-linked and fibronectin-immobilized LbL-coated samples. The in vitro degradation results show that the multilayered coatings of these natural polysaccharide- and synthetic polyamino acid-based polyelectrolytes do not alter the degradation kinetics of the substrates; however, the pretreatment conditions have a significant impact on the overall coating degradation behavior. These preliminary results collectively show the potential use of LbL coatings on magnesium-based degradable scaffolds to improve their surface bioactivity.
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26
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Welldon KJ, Findlay DM, Evdokiou A, Ormsby RT, Atkins GJ. Calcium induces pro-anabolic effects on human primary osteoblasts associated with acquisition of mature osteocyte markers. Mol Cell Endocrinol 2013; 376:85-92. [PMID: 23791847 DOI: 10.1016/j.mce.2013.06.013] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/20/2013] [Revised: 05/16/2013] [Accepted: 06/11/2013] [Indexed: 02/05/2023]
Abstract
Calcium, in combination with vitamin D, is an effective treatment for osteoporosis. Since bone mineralisation occurs concurrently with osteoblast to osteocyte transition, we hypothesised that calcium would stimulate this process. The effect of calcium (1.8-11.8mM) was tested on human primary osteoblast (NHBC) differentiation in vitro. Cultures were assayed for cell-associated mineral and gene expression associated with osteoblast differentiation and mineralisation. Treatment with calcium resulted in a striking dose- and time-dependent increase in cell-associated mineralisation. Calcium appeared to promote osteoblast to osteocyte differentiation, as indicated by increased expression of osteocalcin (OCN), E11, dentin matrix protein 1 (DMP1) and SOST mRNA. The expression of the osteoclast inhibitor, osteoprotegerin, was dramatically enhanced by calcium. Calcium also increased the ratio of PHEX mRNA expression relative to that of MEPE, suggesting a mechanism for the pro-anabolic effect. Consistent with this, calcium-dependent mineralisation was reversed in the presence of MEPE-ASARM peptides. This study suggests that calcium promotes osteoblast to osteocyte transition and concurrent matrix mineralisation, at least in part through the PHEX-MEPE axis.
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Affiliation(s)
- Katie J Welldon
- Bone Cell Biology Group, Centre for Orthopaedic & Trauma Research, The University of Adelaide, Adelaide, SA 5005, Australia
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Groen N, van de Peppel J, Yuan H, van Leeuwen JP, van Blitterswijk CA, de Boer J. Bioinformatics-based selection of a model cell type for in vitro biomaterial testing. Biomaterials 2013; 34:5552-61. [DOI: 10.1016/j.biomaterials.2013.04.001] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2013] [Accepted: 04/01/2013] [Indexed: 12/21/2022]
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Cheng S, Wang W, Lin Z, Zhou P, Zhang X, Zhang W, Chen Q, Kou D, Ying X, Shen Y, Cheng X, Yu Z, Peng L, Lu C. Effects of extracellular calcium on viability and osteogenic differentiation of bone marrow stromal cells in vitro. Hum Cell 2013; 26:114-20. [PMID: 23749732 DOI: 10.1007/s13577-012-0041-8] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2011] [Accepted: 01/11/2012] [Indexed: 12/16/2022]
Abstract
Bone marrow stromal cells (BMSCs) have been extensively used for tissue engineering. However, the effect of Ca(2+) on the viability and osteogenic differentiation of BMSCs has yet to be evaluated. To determine the dose-dependent effect of Ca(2+) on viability and osteogenesis of BMSCs in vitro, BMSCs were cultured in calcium-free DMEM medium supplemented with various concentrations of Ca(2+) (0, 1, 2, 3, 4, and 5 mM) from calcium citrate. Cell viability was analyzed by MTT assay and osteogenic differentiation was evaluated by alkaline phosphatase (ALP) assay, Von Kossa staining, and real-time PCR. Ca(2+) stimulated BMSCs viability in a dose-dependent manner. At slightly higher concentrations (4 and 5 mM) in the culture, Ca(2+) significantly inhibited the activity of ALP on days 7 and 14 (P < 0.01 or P < 0.05), significantly suppressed collagen synthesis (P < 0.01 or P < 0.05), and significantly elevated calcium deposition (P < 0.01) and mRNA levels of osteocalcin (P < 0.01 or P < 0.05) and osteopontin (P < 0.01 or P < 0.05). Therefore, elevated concentrations of extracellular calcium may promote cell viability and late-stage osteogenic differentiation, but may suppress early-stage osteogenic differentiation in BMSCs.
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Affiliation(s)
- Shaowen Cheng
- Trauma Center of the Affiliated Hospital of Hainan Medical College, 31 Long Hua Road, Haikou, 571100, China
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29
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Wang W, Chen Q, Li X, Zhang W, Peng L, Wang L, Lin Z, Xu H, Song S, Zhang X, Cheng S, Kou D, Lv C, Yu Z. Enhancement of bone formation with a synthetic matrix containing bone morphogenetic protein-2 by the addition of calcium citrate. Knee Surg Sports Traumatol Arthrosc 2013; 21:456-65. [PMID: 22434160 DOI: 10.1007/s00167-012-1953-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/21/2011] [Accepted: 02/28/2012] [Indexed: 01/09/2023]
Abstract
PURPOSE The aim of the study was to test whether calcium citrate combined with rhBMP-2 was able to enhance bone regeneration compared with a matrix containing only rhBMP-2. METHODS In each of experimental mice, one cylinder of calcium citrate-rhBMP-2 or rhBMP-2 alone was implanted into the thigh muscle pouches of the mouse. The following two treatment modalities were randomly allocated: (1) empty control with rhBMP-2 alone in a gelatin matrix and (2) a gelatin matrix including both calcium citrate and BMP-2. After several weeks, bone granules were obtained by histological analysis. RESULTS Histomorphometric analysis showed the greatest amount of newly formed bone was observed in the group that contained 10.0 mg calcium citrate with 2.0 mg rhBMP-2 (p < 0.05). Quantitative histomorphometry revealed in the calcium citrate-rhBMP-2 group an obvious increase in the fractional area and the average new bone mineral density of newly formed bone at 2, 4 and 6 weeks than in the rhBMP-2 group (p < 0.05). At 2 weeks time-point, the mature cancellous bone had formed in the calcium citrate-rhBMP-2 group. CONCLUSIONS From this study, it can be concluded that calcium citrate combined with rhBMP-2 significantly enhances bone regeneration in muscle. This synthetic gelatin matrix containing calcium citrate/gelatin granules fulfils a number of criteria required for an ideal carrier system for rhBMP-2. The calcium ions that calcium citrate releases into the surrounding environment can activate bone formation when used as part of a combination of calcium citrate and BMP-2.
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Affiliation(s)
- Wei Wang
- Department of Orthopaedic Surgery, Second Affiliated Hospital of Wenzhou Medical College, Wenzhou, Zhejiang, China
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30
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Self-oscillating surface of gel for autonomous mass transport. Colloids Surf B Biointerfaces 2012; 99:60-6. [DOI: 10.1016/j.colsurfb.2011.09.036] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2011] [Revised: 09/21/2011] [Accepted: 09/23/2011] [Indexed: 11/23/2022]
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31
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Bulnheim U, Müller P, Neumann HG, Peters K, Unger RE, Kirkpatrick CJ, Rychly J. Endothelial cells stimulate osteogenic differentiation of mesenchymal stem cells on calcium phosphate scaffolds. J Tissue Eng Regen Med 2012; 8:831-40. [PMID: 23038605 DOI: 10.1002/term.1590] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2011] [Revised: 01/25/2012] [Accepted: 07/07/2012] [Indexed: 12/14/2022]
Abstract
The interaction of mesenchymal stem cells (MSCs) with endothelium in vivo is significant for regenerative processes in organisms. To design concepts for tissue engineering for bone regeneration based on this interaction, the osteogenic differentiation of human bone marrow-derived MSCs in a co-culture with human dermal microvascular endothelial cells (HDMECs) was studied. The experiments were focussed on the regulation of MSCs in a co-culture with HDMECs on different calcium phosphate scaffolds. Alkaline phosphatase (ALP) activity and mRNA expression of various osteogenic markers increased significantly when cells were co-cultured on materials with calcium phosphate scaffolds compared to tissue culture polystyrene or when MSCs were cultured alone. In addition, it was observed that the expression of osteopontin and osteocalcin was highly sensitive to the substrate for cell adhesion. Whereas these late osteogenic markers were down-regulated in co-cultures on polystyrene, they were up-regulated on calcium phosphate and moreover, were differentially expressed on the three calcium phosphate scaffolds tested. To enhance the osteogenic differentiation of MSCs in a co-culture, direct cell-cell interactions were required. Concerning molecular mechanisms in the interactions between both cell types, it was found that connexin 43 was expressed in contact sites and more apparently, endothelial cells grew over the MSCs, which facilitated direct cellular interactions mediated by various adhesion receptors. This study revealed significant findings for the design of implant materials suitable for regeneration of bone by stimulating the functional interaction of MSCs with endothelial cells.
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Affiliation(s)
- Ulrike Bulnheim
- Laboratory of Cell Biology, Medical Faculty, University of Rostock, Schillingallee 69, 18057, Rostock, Germany
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32
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Zhan J, Singh A, Zhang Z, Huang L, Elisseeff JH. Multifunctional aliphatic polyester nanofibers for tissue engineering. BIOMATTER 2012; 2:202-12. [PMID: 23507886 PMCID: PMC3568106 DOI: 10.4161/biom.22723] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Electrospun fibers based on aliphatic polyesters, such as poly(ε-caprolactone) (PCL), have been widely used in regenerative medicine and drug delivery applications due to their biocompatibility, low cost and ease of fabrication. However, these aliphatic polyester fibers are hydrophobic in nature, resulting in poor wettability, and they lack functional groups for decorating the scaffold with chemical and biological cues. Current strategies employed to overcome these challenges include coating and blending the fibers with bioactive components or chemically modifying the fibers with plasma treatment and reactants. In the present study, we report on designing multifunctional electrospun nanofibers based on the inclusion complex of PCL-α-cyclodextrin (PCL-α-CD), which provides both structural support and multiple functionalities for further conjugation of bioactive components. This strategy is independent of any chemical modification of the PCL main chain, and electrospinning of PCL-α-CD is as easy as electrospinning PCL. Here, we describe synthesis of the PCL-α-CD electrospun nanofibers, elucidate composition and structure, and demonstrate the utility of functional groups on the fibers by conjugating a fluorescent small molecule and a polymeric-nanobead to the nanofibers. Furthermore, we demonstrate the application of PCL-α-CD nanofibers for promoting osteogenic differentiation of human adipose-derived stem cells (hADSCs), which induced a higher level of expression of osteogenic markers and enhanced production of extracellular matrix (ECM) proteins or molecules compared with control PCL fibers.
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Affiliation(s)
- Jianan Zhan
- Wilmer Eye Institute and Department of Biomedical Engineering; Johns Hopkins University; Baltimore, MD USA
| | - Anirudha Singh
- Wilmer Eye Institute and Department of Biomedical Engineering; Johns Hopkins University; Baltimore, MD USA
| | - Zhe Zhang
- Center for Biomedical Imaging Research; Department of Biomedical Engineering; School of Medicine; Tsinghua University; Beijing, P.R. China
| | - Ling Huang
- Department of Chemical and Biomolecular Engineering; Johns Hopkins University; Baltimore, MD USA
| | - Jennifer H. Elisseeff
- Wilmer Eye Institute and Department of Biomedical Engineering; Johns Hopkins University; Baltimore, MD USA
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33
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Amosi N, Zarzhitsky S, Gilsohn E, Salnikov O, Monsonego-Ornan E, Shahar R, Rapaport H. Acidic peptide hydrogel scaffolds enhance calcium phosphate mineral turnover into bone tissue. Acta Biomater 2012; 8:2466-75. [PMID: 22503952 DOI: 10.1016/j.actbio.2012.04.003] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2012] [Revised: 03/29/2012] [Accepted: 04/02/2012] [Indexed: 10/28/2022]
Abstract
Designed peptides may generate molecular scaffolds in the form of hydrogels to support tissue regeneration. We studied the effect of hydrogels comprising β-sheet-forming peptides rich in aspartic amino acids and of tricalcium phosphate (β-TCP)-loaded hydrogels on calcium adsorption and cell culture in vitro, and on bone regeneration in vivo. The hydrogels were found to act as efficient depots for calcium ions, and to induce osteoblast differentiation in vitro. In vivo studies on bone defect healing in rat distal femurs analyzed by microcomputerized tomography showed that the peptide hydrogel itself induced better bone regeneration in comparison to non-treated defects. A stronger regeneration capacity was obtained in bone defects treated with β-TCP-loaded hydrogels, indicating that the peptide hydrogels and the mineral act synergistically to enhance bone regeneration. In vivo regeneration was found to be better with hydrogels loaded with porous β-TCP than with hydrogels loaded with non-porous mineral. It is concluded that biocompatible and biodegradable matrices, rich in anionic moieties that efficiently adsorb calcium ions while supporting cellular osteogenic activity, may efficiently promote β-TCP turnover into bone mineral.
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34
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Gustavsson J, Planell J, Engel E. Ion-selective electrodes to monitor osteoblast-like cellular influence on the extracellular concentration of calcium. J Tissue Eng Regen Med 2012; 7:609-20. [DOI: 10.1002/term.550] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2011] [Revised: 10/06/2011] [Accepted: 11/15/2011] [Indexed: 11/12/2022]
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35
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Liu J, Jin T, Chang S, Czajka-Jakubowska A, Zhang Z, Nör JE, Clarkson BH. The effect of novel fluorapatite surfaces on osteoblast-like cell adhesion, growth, and mineralization. Tissue Eng Part A 2010; 16:2977-86. [PMID: 20412028 DOI: 10.1089/ten.tea.2009.0632] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
There is increasing demand for biomedical implants to correct skeletal defects caused by trauma, disease, or genetic disorder. In this study, the MG-63 cells were grown on metals coated with ordered and disordered fluorapatite (FA) crystal surfaces to study the biocompatibility, initial cellular response, and the underlying mechanisms during this process. The long-term growth and mineralization of the cells were also investigated. After 3 days, the cell numbers on etched metal surface are significantly higher than those on the ordered and disordered FA surfaces, but the initial adherence of a greater number of cells did not lead to earlier mineral formation at the cell-implant interface. Of the 84 cell adhesion and matrix-focused pathway genes, an up- or down-regulation of a total of 15 genes such as integrin molecules, integrin alpha M and integrin alpha 7 and 8 was noted, suggesting a modulating effect on these adhesion molecules by the ordered FA surface compared with the disordered. Osteocalcin expression and the mineral nodule formation are most evident on the FA surfaces after osteogenic induction (OI) for 7 weeks. The binding of the ordered FA surfaces to the metal, with and without OI, was significantly higher than that of the disordered FA surfaces with OI. Most significantly, even without the OI supplement, the MG-63 cells grown on FA crystal surfaces start to differentiate and mineralize, suggesting that the FA crystal could be a simple and bioactive implant coating material.
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Affiliation(s)
- Jun Liu
- Department of Cariology, Restorative Sciences and Endodontics, Dental School, University of Michigan, Ann Arbor, Michigan 48109, USA
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36
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Zhang N, Molenda JA, Fournelle JH, Murphy WL, Sahai N. Effects of pseudowollastonite (CaSiO3) bioceramic on in vitro activity of human mesenchymal stem cells. Biomaterials 2010; 31:7653-65. [DOI: 10.1016/j.biomaterials.2010.06.043] [Citation(s) in RCA: 65] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2010] [Accepted: 06/23/2010] [Indexed: 10/19/2022]
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37
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Nakamura S, Matsumoto T, Sasaki JI, Egusa H, Lee KY, Nakano T, Sohmura T, Nakahira A. Effect of Calcium Ion Concentrations on Osteogenic Differentiation and Hematopoietic Stem Cell Niche-Related Protein Expression in Osteoblasts. Tissue Eng Part A 2010; 16:2467-73. [DOI: 10.1089/ten.tea.2009.0337] [Citation(s) in RCA: 111] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Shinya Nakamura
- Department of Materials Science, Osaka Prefecture University, Sakai, Japan
| | - Takuya Matsumoto
- Department of Oromaxillofacial Regeneration, Osaka University, Sutia, Japan
| | - Jun-Ichi Sasaki
- Department of Oromaxillofacial Regeneration, Osaka University, Sutia, Japan
| | - Hiroshi Egusa
- Department of Oromaxillofacial Regeneration, Osaka University, Sutia, Japan
| | - Kuen Yong Lee
- Department of Bioengineering, Hanyang University, Seoul, Republic of Korea
| | | | - Taiji Sohmura
- Department of Oromaxillofacial Regeneration, Osaka University, Sutia, Japan
| | - Atsushi Nakahira
- Department of Materials Science, Osaka Prefecture University, Sakai, Japan
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38
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Gindraux F, Obert L, Laganier L, Barnouin L. Industrial approach in developing an advanced therapy product for bone repair. J Tissue Eng Regen Med 2010; 4:194-204. [PMID: 19967743 DOI: 10.1002/term.227] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Mesenchymal stem cells (MSCs) are multipotent cells with therapeutic applications. The aim of our work was to develop an advanced therapy product for bone repair, associating autologous human adipose-derived MSCs (ASCs) with human bone allograft (TBF; Phoenix). We drew up specifications that studied: (a) the influence of tissue collection procedures (elective liposuction or non-invasive resection) and patient age on cell number and function; (b) monolayer cell culture conditions and osteodifferentiation and particularly the possibility of reducing stages of culture; and (c) the bone construct preparation and especially the comparison between two types of cells seeded on bone allograft (number of cultured processed lipoaspirate (PLA) cells and monolayer-expanded ASCs) and cultured for 1, 2 and 3 weeks. The results showed that tissue harvesting techniques and patient age did not affect PLA cell number and ASC cloning efficiency. PLA cells can be directly osteodifferentiated (instead of culturing them in expansion medium first and then differentiating them) and these cells were able to mineralize when they were cultured in an osteogenic medium containing calcium chloride. PLA cells directly seeded on bone allograft for a minimum of 3 weeks of culture in this osteogenic medium expressed osteocalcin and colonized the matrix better than monolayer-expanded ASCs. This work detailed the specifications of a pharmaceutical laboratory to develop an advanced therapy product and this current approach is promising for bone repair.
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Affiliation(s)
- Florelle Gindraux
- Intervention, Innovation, Imagery, Engineering in Health (EA4268), University of Franche-Comté, Besançon, France.
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McCullen SD, Zhan J, Onorato ML, Bernacki SH, Loboa EG. Effect of Varied Ionic Calcium on Human Adipose-Derived Stem Cell Mineralization. Tissue Eng Part A 2010; 16:1971-81. [DOI: 10.1089/ten.tea.2009.0691] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Seth D. McCullen
- Joint Department of Biomedical Engineering at the University of North Carolina at Chapel Hill and North Carolina State University, Raleigh, North Carolina
| | - Jackie Zhan
- Department of Biomedical Engineering, Zhejiang University, Hangzhou, Zhejiang, P.R. China
| | - Maureen L. Onorato
- Joint Department of Biomedical Engineering at the University of North Carolina at Chapel Hill and North Carolina State University, Raleigh, North Carolina
| | - Susan H. Bernacki
- Joint Department of Biomedical Engineering at the University of North Carolina at Chapel Hill and North Carolina State University, Raleigh, North Carolina
| | - Elizabeth G. Loboa
- Joint Department of Biomedical Engineering at the University of North Carolina at Chapel Hill and North Carolina State University, Raleigh, North Carolina
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40
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Zhao J, Ohba S, Komiyama Y, Shinkai M, Chung UI, Nagamune T. Icariin: a potential osteoinductive compound for bone tissue engineering. Tissue Eng Part A 2010; 16:233-43. [PMID: 19698057 DOI: 10.1089/ten.tea.2009.0165] [Citation(s) in RCA: 81] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
To effectively treat bone diseases using bone regenerative medicine, there is an urgent need to develop safe and cheap drugs that can potently induce bone formation. Here, we demonstrate the osteogenic effects of icariin, the main active compound of Epimedium pubescens. Icariin induced osteogenic differentiation of preosteoblastic cells. The combination of icariin and a helioxanthin-derived small compound synergistically induced osteogenic differentiation of MC3T3-E1 cells to a similar extent to bone morphogenetic protein-2. Icariin enhanced the osteogenic induction activity of bone morphogenetic protein-2 in a fibroblastic cell line. Mineralization was enhanced by treatment with a combination of icariin and calcium-enriched medium. The in vivo anabolic effect of icariin was confirmed in a mouse calvarial defect model. Eight-week-old male C57BL/6N mice were transplanted with icariin-calcium phosphate cement (CPC) tablets or CPC tablets only (n = 5 for each), and bone regeneration was evaluated after 4 and 6 weeks. Significant new bone formation was observed in the icariin-CPC group at 4 weeks, and the new bone thickness had increased by 6 weeks. Obvious blood vessel formation was observed in the icariin-induced new bone. Treatment of senescence-accelerated mouse prone 1 and senescence-accelerated mouse prone 6 models further demonstrated that icariin was able to enhance bone formation in vivo. Therefore, icariin is a strong candidate for an osteogenic compound for use in bone tissue engineering.
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Affiliation(s)
- Jiyuan Zhao
- Department of Chemistry and Biotechnology, School of Engineering, University of Tokyo, Tokyo, Japan
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41
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Ketoconazole-induced JNK phosphorylation and subsequent cell death via apoptosis in human osteosarcoma cells. Toxicol In Vitro 2009; 23:1268-76. [DOI: 10.1016/j.tiv.2009.07.025] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2008] [Revised: 06/17/2009] [Accepted: 07/17/2009] [Indexed: 02/07/2023]
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42
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Asporin competes with decorin for collagen binding, binds calcium and promotes osteoblast collagen mineralization. Biochem J 2009; 423:53-9. [PMID: 19589127 DOI: 10.1042/bj20090542] [Citation(s) in RCA: 102] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The interactions of the ECM (extracellular matrix) protein asporin with ECM components have previously not been investigated. Here, we show that asporin binds collagen type I. This binding is inhibited by recombinant asporin fragment LRR (leucine-rich repeat) 10-12 and by full-length decorin, but not by biglycan. We demonstrate that the polyaspartate domain binds calcium and regulates hydroxyapatite formation in vitro. In the presence of asporin, the number of collagen nodules, and mRNA of osteoblastic markers Osterix and Runx2, were increased. Moreover, decorin or the collagen-binding asporin fragment LRR 10-12 inhibited the pro-osteoblastic activity of full-length asporin. Our results suggest that asporin and decorin compete for binding to collagen and that the polyaspartate in asporin directly regulates collagen mineralization. Therefore asporin has a role in osteoblast-driven collagen biomineralization activity. We also show that asporin can be expressed in Escherichia coli (Rosetta-gami) with correctly positioned cysteine bridges, and a similar system can possibly be used for the expression of other SLRPs (small LRR proteoglycans/proteins).
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43
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Effect of lactoferrin-embedded collagen membrane on osteogenic differentiation of human osteoblast-like cells. J Biosci Bioeng 2009; 107:191-5. [PMID: 19217559 DOI: 10.1016/j.jbiosc.2008.09.018] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2008] [Accepted: 09/25/2008] [Indexed: 11/24/2022]
Abstract
Lactoferrin (LF) has the ability to promote the proliferation and differentiation of osteoblasts, suggesting its potential utility as an osteogenic growth factor in bone tissue engineering. However, this type of application requires improved drug delivery system (DDS) technology at the target site. In this study, we report enhanced calcium deposition and alkaline phosphatase (ALP) activity using the type I collagen membrane during osteogenic differentiation of MG63 human osteoblast-like cells, indicating that type I collagen not only acts as a site for calcification but also promotes the expression of differentiated phenotypes. We also used this membrane as a drug delivery carrier for bovine LF. Approximately 27% of LF embedded on the type I collagen membrane was released within the first hour in cell-free condition. This initial burst release of LF was followed by a slower release from the collagen membrane. Bovine LF embedded in the type I collagen membrane promoted its calcification during osteogenic differentiation of MG63 cells without the loss of LF bioactivity. Taken together, ALP activity and osteocalcin production were enhanced in the MG63 cells plated on the LF-embedded collagen membrane, suggesting that LF incorporated in the collagen membrane promoted bone-like tissue formation by MG63 cells. These observations suggest that the type I collagen membrane is useful as a drug delivery carrier for LF in bone tissue engineering.
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Zhao J, Shinkai M, Takezawa T, Ohba S, Chung UI, Nagamune T. Bone regeneration using collagen type I vitrigel with bone morphogenetic protein-2. J Biosci Bioeng 2009; 107:318-23. [PMID: 19269600 DOI: 10.1016/j.jbiosc.2008.10.007] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2008] [Revised: 10/15/2008] [Accepted: 10/27/2008] [Indexed: 02/03/2023]
Abstract
Bone morphogenetic protein-2 is a very promising candidate for the treatment of bone diseases and defects, but more effective therapeutic methods are required due to its instability in vivo. A controlled and localized delivery system of Bone morphogenetic protein-2 would be appropriate for effective bone regeneration. Here, we report a novel delivery system of bone morphogenetic protein-2 using vitrigel (a novel stable collagen gel membrane prepared from vitrified type I collagen) for in vivo bone regeneration. Scanning electron microscopy revealed that the collagen vitrigel formed a tightly woven network with average pore sizes of about 1-2 microm. The vitrigel scaffold delivery system exhibited sustained release of bone morphogenetic protein-2 and >80% of the total bone morphogenetic protein-2 was still retained in the vitrigel after 15 days in phosphate-buffered saline in vitro. Bone morphogenetic protein-2-containing vitrigel was transplanted into mouse calvarial defects. The enhanced mechanical strength of the vitrigel made it easier to implant into defects without damage. Obvious bone regeneration was observed in the defects of mice treated with as little as 0.19 microg of bone morphogenetic protein-2 at 4 weeks after the transplantation. The local and sustained delivery system for bone morphogenetic protein-2 developed in the present study may represent a powerful modality for bone regeneration.
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Affiliation(s)
- Jiyuan Zhao
- Department of Chemistry and Biotechnology, School of Engineering, University of Tokyo, Tokyo 113-8656, Japan
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45
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McCullen SD, Zhu Y, Bernacki SH, Narayan RJ, Pourdeyhimi B, Gorga RE, Loboa EG. Electrospun composite poly(L-lactic acid)/tricalcium phosphate scaffolds induce proliferation and osteogenic differentiation of human adipose-derived stem cells. Biomed Mater 2009; 4:035002. [PMID: 19390143 DOI: 10.1088/1748-6041/4/3/035002] [Citation(s) in RCA: 101] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Development of tissue-engineered bone constructs has recently focused on the use of electrospun composite scaffolds seeded with stem cells from various source tissues. In this study, we fabricated electrospun composite scaffolds consisting of beta-tricalcium phosphate (TCP) crystals and poly(L-lactic acid) (PLA) at varying loading levels of TCP (0, 5, 10, 20 wt%) and assessed the composite scaffolds' material properties and ability to induce proliferation and osteogenic differentiation of human adipose-derived stem cells (hASCs) in the presence of osteogenic differentiating medium. The electrospun scaffolds all exhibited a nonwoven structure with an interconnected porous network. With the addition of TCP, the fiber diameter increased with each treatment ranging from 503.39 +/- 20.31 nm for 0 wt% TCP to 1267.36 +/- 59.03 nm for 20 wt% TCP. Tensile properties of the composite scaffolds were assessed and the overall tensile strength of the neat scaffold (0 wt% TCP) was 847 +/- 89.43 kPA; the addition of TCP significantly decreased this value to an average of 350.83 +/- 38.57 kPa. As the electrospun composite scaffolds degraded in vitro, TCP was released into the medium with the largest release occurring within the first 6 days. Human ASCs were able to adhere, proliferate and osteogenically differentiate on all scaffold combinations. DNA content increased in a temporal manner for each scaffold over 18 days in culture although for the day 12 timepoint, the 10 wt% TCP scaffold induced the greatest hASC proliferation. Endogenous alkaline phosphatase activity was enhanced on the composite PLA/TCP scaffolds compared to the PLA control particularly by day 18. It was noted that at the highest TCP loading levels of 10 and 20 wt%, there was a dramatic increase in the amount of cell-mediated mineralization compared to the 5 wt% TCP and the neat PLA scaffold. This work suggests that local environment cues provided by the biochemical nature of the scaffold can accelerate the overall osteogenic differentiation of hASCs and encourage rapid ossification.
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Affiliation(s)
- S D McCullen
- Joint Department of Biomedical Engineering, University of North Carolina at Chapel Hill and North Carolina State University, Raleigh, NC 27695, USA
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Murase Y, Maeda S, Hashimoto S, Yoshida R. Design of a mass transport surface utilizing peristaltic motion of a self-oscillating gel. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2009; 25:483-489. [PMID: 19063637 DOI: 10.1021/la8029006] [Citation(s) in RCA: 82] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Novel conveyer gels exhibiting autonomous peristaltic motion without external stimuli were prepared by copolymerizing temperature-responsive N-isopropylacrylamide (NIPAAm), ruthenium tris(2,2'-bipyridine) (Ru(bpy)(3)) as the catalyst for the Belousov-Zhabotinsky (BZ) reaction, and 2-acrylamido-2-methylpropanesulfonic acid (AMPS). When the gel was immersed in the catalyst-free BZ solution, the BZ reaction occurred in the gel and the chemical wave propagated followed by the peristaltic motion of the gel. In this study, we investigated the influence of the AMPS feed ratio on the network structure and the swelling-deswelling properties of the poly(NIPAAm-co-Ru(bpy)(3)-co-AMPS) gels. The gel had a microphase-separated structure when the AMPS feed ratio was less than 5 mol % due to the effect of the poor solvent in the polymerization process. On the other hand, when the AMPS feed ratio is more than 10 mol %, the gel is a homogeneous structure. The microphase-separated structure highly improved the swelling-deswelling kinetics and generated a swelling-deswelling amplitude of more than 10% of the gel thickness, which was approximately 10 times larger than that of the gel with a homogeneous network structure. Further, we attempted to transport an object by utilizing the peristaltic motion of poly(NIPAAm-co-Ru(bpy)(3)-co-AMPS) gels. A cylindrical poly(acrylamide) (PAAm) gel was transported on the gel surface with the propagation of the chemical wave when the AMPS feed ratio was low (less than 2.5 mol %). We have proposed a model to describe the mass transport phenomena based on the Hertz contact theory, and the relation between the transportability and the peristaltic motion was discussed. It was found that the microphase-separated structure of the gel had an important role for mass transport phenomena.
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Affiliation(s)
- Yoko Murase
- Department of Materials Engineering, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
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Naito K, Matsuzaka K, Ishigami K, Inoue T. Mechanical force promotes proliferation and early differentiation of bone marrow derived osteoblast-like cells in vitro. ACTA ACUST UNITED AC 2009. [DOI: 10.3353/omp.13.143] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Cai K, Hu Y, Jandt KD, Wang Y. Surface modification of titanium thin film with chitosan via electrostatic self-assembly technique and its influence on osteoblast growth behavior. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2008; 19:499-506. [PMID: 17619966 DOI: 10.1007/s10856-007-3184-5] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/24/2006] [Accepted: 05/21/2007] [Indexed: 05/16/2023]
Abstract
Chitosan (Chi) and poly (styrene sulfonate) (PSS) were employed to surface modify titanium thin film via electrostatic self-assembly (ESA) technique in order to improve its biocompatibility. The surface chemistry, wettability and surface topography of the coated films with different number of deposited layers were investigated by using X-ray photoelectron spectroscopy (XPS), water contact angle measurement and atomic force microscopy (AFM), respectively. The results indicated that a full surface coverage for the outmost layer was achieved at least after deposition of five layers, i.e., PEI/(PSS/Chi)2 on the titanium films. The formed multi-layered structure of PEI(PSS/Chi)x (x > or = 2) on the titanium film was stable in air at room temperature and in phosphate buffered solution (PBS) for at least 3 weeks. Cell proliferation, cell viability, DNA synthesis as well as differentiation function (alkaline phosphatase) of osteoblasts on chitosan-modified titanium film (PEI/(PSS/Chi)6) and control sample were investigated, respectively. Osteoblasts cultured on chitosan-modified titanium film displayed a higher proliferation tendency than that of control (p < 0.01). Cell viability, alkaline phosphatase as well as DNA synthesis measurements indicated that osteoblasts on chitosan-modified titanium films were greater (p < 0.01) than those for the control, respectively. These results suggest that surface modification of titanium film was successfully achieved via deposition of PEI/(PSS/Chi)x layers, which is useful to enhance the biocompatibility of the titanium film.
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Affiliation(s)
- Kaiyong Cai
- College of Bioengineering, Chongqing University, Chongqing, P.R. China.
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Effect of bovine lactoferrin on extracellular matrix calcification by human osteoblast-like cells. Biosci Biotechnol Biochem 2008; 72:226-30. [PMID: 18175916 DOI: 10.1271/bbb.70465] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Osteoblast-mediated calcium deposition to the extracellular matrix (ECM) is a critical step in bone tissue generation. Bovine lactoferrin enhanced the calcium deposition by MG63 human osteoblast-like cells cultured on collagen-coated plates. Lactoferrin also promoted the alkaline phosphatase activity and osteocalcin production during the calcification process, whereas it had little effect on the growth of the cells on the collagen-coated plates.
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Bitar M, Brown RA, Salih V, Kidane AG, Knowles JC, Nazhat SN. Effect of Cell Density on Osteoblastic Differentiation and Matrix Degradation of Biomimetic Dense Collagen Scaffolds. Biomacromolecules 2007; 9:129-35. [DOI: 10.1021/bm701112w] [Citation(s) in RCA: 107] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Malak Bitar
- Division of Biomaterials and Tissue Engineering, UCL Eastman Dental Institute, 256 Gray’s Inn Road, London, WC1X 8LD, United Kingdom, Materials Biology Interactions Group, Swiss Federal Laboratories for Materials Testing and Research (EMPA), Lerchenfeldstrasse 5, CH-9014 St. Gallen, Switzerland, UCL Tissue Repair & Engineering Centre, Institute of Orthopaedics, Stanmore Campus, London, HA7 4LP, United Kingdom, Academic Division of Surgery & Interventional Sciences, Royal Free & University College Medical
| | - Robert A. Brown
- Division of Biomaterials and Tissue Engineering, UCL Eastman Dental Institute, 256 Gray’s Inn Road, London, WC1X 8LD, United Kingdom, Materials Biology Interactions Group, Swiss Federal Laboratories for Materials Testing and Research (EMPA), Lerchenfeldstrasse 5, CH-9014 St. Gallen, Switzerland, UCL Tissue Repair & Engineering Centre, Institute of Orthopaedics, Stanmore Campus, London, HA7 4LP, United Kingdom, Academic Division of Surgery & Interventional Sciences, Royal Free & University College Medical
| | - Vehid Salih
- Division of Biomaterials and Tissue Engineering, UCL Eastman Dental Institute, 256 Gray’s Inn Road, London, WC1X 8LD, United Kingdom, Materials Biology Interactions Group, Swiss Federal Laboratories for Materials Testing and Research (EMPA), Lerchenfeldstrasse 5, CH-9014 St. Gallen, Switzerland, UCL Tissue Repair & Engineering Centre, Institute of Orthopaedics, Stanmore Campus, London, HA7 4LP, United Kingdom, Academic Division of Surgery & Interventional Sciences, Royal Free & University College Medical
| | - Asmeret G. Kidane
- Division of Biomaterials and Tissue Engineering, UCL Eastman Dental Institute, 256 Gray’s Inn Road, London, WC1X 8LD, United Kingdom, Materials Biology Interactions Group, Swiss Federal Laboratories for Materials Testing and Research (EMPA), Lerchenfeldstrasse 5, CH-9014 St. Gallen, Switzerland, UCL Tissue Repair & Engineering Centre, Institute of Orthopaedics, Stanmore Campus, London, HA7 4LP, United Kingdom, Academic Division of Surgery & Interventional Sciences, Royal Free & University College Medical
| | - Jonathan C. Knowles
- Division of Biomaterials and Tissue Engineering, UCL Eastman Dental Institute, 256 Gray’s Inn Road, London, WC1X 8LD, United Kingdom, Materials Biology Interactions Group, Swiss Federal Laboratories for Materials Testing and Research (EMPA), Lerchenfeldstrasse 5, CH-9014 St. Gallen, Switzerland, UCL Tissue Repair & Engineering Centre, Institute of Orthopaedics, Stanmore Campus, London, HA7 4LP, United Kingdom, Academic Division of Surgery & Interventional Sciences, Royal Free & University College Medical
| | - Showan N. Nazhat
- Division of Biomaterials and Tissue Engineering, UCL Eastman Dental Institute, 256 Gray’s Inn Road, London, WC1X 8LD, United Kingdom, Materials Biology Interactions Group, Swiss Federal Laboratories for Materials Testing and Research (EMPA), Lerchenfeldstrasse 5, CH-9014 St. Gallen, Switzerland, UCL Tissue Repair & Engineering Centre, Institute of Orthopaedics, Stanmore Campus, London, HA7 4LP, United Kingdom, Academic Division of Surgery & Interventional Sciences, Royal Free & University College Medical
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