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Ahuja A, Rastogi VK. Physicochemical and thermal characterization of the edible shellac films incorporated with oleic acid to enhance flexibility, water barrier and retard aging. Int J Biol Macromol 2024; 269:132136. [PMID: 38718999 DOI: 10.1016/j.ijbiomac.2024.132136] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2024] [Revised: 04/24/2024] [Accepted: 05/05/2024] [Indexed: 05/12/2024]
Abstract
In this work, shellac plasticized with oleic acid was solvent cast to prepare the flexible and water-resistant film for packaging applications. The films were prepared with varying amounts of oleic acid and studied in detail for appearance, surface morphology, thermal, chemical, barrier, mechanical, and robustness. The surface morphology confirmed the smooth surface of films up to SH-OA20 (100:20 w/w; shellac: oleic acid). Fourier-transform infrared spectroscopy confirmed that oleic acid reduced the hydrogen bonding of the shellac matrix to provide a plasticization effect. Also, the thermal analysis showed a reduction in the melting enthalpy. Moreover, the plasticized films had a better barrier to water vapor due to increased smoothness and reduction in brittleness. Adding oleic acid also increased the elongation at break up to 40 % without any changes in tensile strength. The flexibility of the films increased with the oleic acid content, making them resistant to burst, crumbling, bending, rolling, and stretching. Oleic acid also showed the retardation of aging and thermal aging of shellac. In the future, the long-term stability and migration of the films can be investigated.
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Affiliation(s)
- Arihant Ahuja
- Department of Paper Technology, Indian Institute of Technology Roorkee, Uttarakhand 247667, India
| | - Vibhore Kumar Rastogi
- Department of Paper Technology, Indian Institute of Technology Roorkee, Uttarakhand 247667, India.
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2
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Park H, Jeong WS, Choi JW. Effect of Therapeutic Radiation on Polycaprolactone/Hydroxyapatite Biomaterials in a Calvarial Model. J Craniofac Surg 2024:00001665-990000000-01315. [PMID: 38299842 DOI: 10.1097/scs.0000000000009985] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2023] [Accepted: 11/13/2023] [Indexed: 02/02/2024] Open
Abstract
Bone defects caused by cancer resection often require postoperative radiotherapy. Although various synthetic polymers have been introduced as graft materials, their biological behavior after radiation exposure remains unclear. Here, we investigated how polycaprolactone/hydroxyapatite (PCL/HA) implants respond to therapeutic radiation exposure (in terms of volume and bone regeneration). Four 8 mm diameter calvaria defects were surgically created on the parietal bone of 6 rabbits. PCL/HA implants made of porous, solid, and hybrid polymers were grafted by random placement in each defect. The fourth defect was left untreated. Four weeks after surgery, radiation exposure was conducted weekly for 6 weeks (total: 48 Gy). Micro-computed tomography and histologic analysis were performed at 3 and 6 months, and 6 months postradiation, respectively. The total augmented volumes of all implants showed no significant differences between 3- and 6-months postradiation computed tomography images. In histologic analysis, new bone areas were 0.45±0.11 mm2, 2.02±0.34 mm2, and 3.60±0.77 mm2 in solid, hybrid, and porous polymer grafts, respectively. Bone regeneration was limited to the periphery of the defect in the hybrid and porous polymer grafts, whereas new bone formed inside the porous implant. The total augmented volume of the defect was maintained without significant absorption even after radiation exposure. The PCL/HA implant maintained its structure despite radiation exposure. The porous PCL/HA implant demonstrated excellent bone regeneration, followed by the hybrid and solid implants. The PCL/HA implant is a promising candidate for bone defect reconstruction.
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Affiliation(s)
- Hojin Park
- Department of Plastic and Reconstructive Surgery, Korea University College of Medicine, Korea University Anam Hospital, South Korea
| | - Woo Shik Jeong
- Department of Plastic and Reconstructive Surgery, University of Ulsan College of Medicine, Asan Medical Center, Seoul, South Korea
| | - Jong Woo Choi
- Department of Plastic and Reconstructive Surgery, University of Ulsan College of Medicine, Asan Medical Center, Seoul, South Korea
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Anita Lett J, Sagadevan S, Fatimah I, Hoque ME, Lokanathan Y, Léonard E, Alshahateet SF, Schirhagl R, Oh WC. Recent advances in natural polymer-based hydroxyapatite scaffolds: Properties and applications. Eur Polym J 2021. [DOI: 10.1016/j.eurpolymj.2021.110360] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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4
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Cunha FB, Pomini KT, Plepis AMDG, Martins VDCA, Machado EG, de Moraes R, Munhoz MDAES, Machado MVR, Duarte MAH, Alcalde MP, Buchaim DV, Buchaim RL, Fernandes VAR, Pereira EDSBM, Pelegrine AA, da Cunha MR. In Vivo Biological Behavior of Polymer Scaffolds of Natural Origin in the Bone Repair Process. Molecules 2021; 26:molecules26061598. [PMID: 33805847 PMCID: PMC8002007 DOI: 10.3390/molecules26061598] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2021] [Accepted: 03/09/2021] [Indexed: 12/15/2022] Open
Abstract
Autologous bone grafts, used mainly in extensive bone loss, are considered the gold standard treatment in regenerative medicine, but still have limitations mainly in relation to the amount of bone available, donor area, morbidity and creation of additional surgical area. This fact encourages tissue engineering in relation to the need to develop new biomaterials, from sources other than the individual himself. Therefore, the present study aimed to investigate the effects of an elastin and collagen matrix on the bone repair process in critical size defects in rat calvaria. The animals (Wistar rats, n = 30) were submitted to a surgical procedure to create the bone defect and were divided into three groups: Control Group (CG, n = 10), defects filled with blood clot; E24/37 Group (E24/37, n = 10), defects filled with bovine elastin matrix hydrolyzed for 24 h at 37 °C and C24/25 Group (C24/25, n = 10), defects filled with porcine collagen matrix hydrolyzed for 24 h at 25 °C. Macroscopic and radiographic analyses demonstrated the absence of inflammatory signs and infection. Microtomographical 2D and 3D images showed centripetal bone growth and restricted margins of the bone defect. Histologically, the images confirmed the pattern of bone deposition at the margins of the remaining bone and without complete closure by bone tissue. In the morphometric analysis, the groups E24/37 and C24/25 (13.68 ± 1.44; 53.20 ± 4.47, respectively) showed statistically significant differences in relation to the CG (5.86 ± 2.87). It was concluded that the matrices used as scaffolds are biocompatible and increase the formation of new bone in a critical size defect, with greater formation in the polymer derived from the intestinal serous layer of porcine origin (C24/25).
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Affiliation(s)
- Fernando Bento Cunha
- Department of Morphology and Pathology, Medical College of Jundiai, Jundiaí, São Paulo 13202-550, SP, Brazil; (F.B.C.); (E.G.M.); (R.d.M.); (M.d.A.eS.M.); (M.V.R.M.); (V.A.R.F.); (M.R.d.C.)
- Interunit Postgraduate Program in Bioengineering (EESC/FMRP/IQSC), University of São Paulo (USP), São Carlos 13566-590, SP, Brazil;
| | - Karina Torres Pomini
- Department of Biological Sciences, Bauru School of Dentistry, University of São Paulo (FOB/USP), Bauru 17012-901, SP, Brazil;
- Postgraduate Program in Structural and Functional Interactions in Rehabilitation, University of Marilia (UNIMAR), Marília 17525-902, SP, Brazil;
| | - Ana Maria de Guzzi Plepis
- Interunit Postgraduate Program in Bioengineering (EESC/FMRP/IQSC), University of São Paulo (USP), São Carlos 13566-590, SP, Brazil;
- São Carlos Institute of Chemistry, University of São Paulo, USP, São Carlos 13566-590, SP, Brazil;
| | | | - Eduardo Gomes Machado
- Department of Morphology and Pathology, Medical College of Jundiai, Jundiaí, São Paulo 13202-550, SP, Brazil; (F.B.C.); (E.G.M.); (R.d.M.); (M.d.A.eS.M.); (M.V.R.M.); (V.A.R.F.); (M.R.d.C.)
- Interunit Postgraduate Program in Bioengineering (EESC/FMRP/IQSC), University of São Paulo (USP), São Carlos 13566-590, SP, Brazil;
| | - Renato de Moraes
- Department of Morphology and Pathology, Medical College of Jundiai, Jundiaí, São Paulo 13202-550, SP, Brazil; (F.B.C.); (E.G.M.); (R.d.M.); (M.d.A.eS.M.); (M.V.R.M.); (V.A.R.F.); (M.R.d.C.)
- Interunit Postgraduate Program in Bioengineering (EESC/FMRP/IQSC), University of São Paulo (USP), São Carlos 13566-590, SP, Brazil;
| | - Marcelo de Azevedo e Souza Munhoz
- Department of Morphology and Pathology, Medical College of Jundiai, Jundiaí, São Paulo 13202-550, SP, Brazil; (F.B.C.); (E.G.M.); (R.d.M.); (M.d.A.eS.M.); (M.V.R.M.); (V.A.R.F.); (M.R.d.C.)
- Interunit Postgraduate Program in Bioengineering (EESC/FMRP/IQSC), University of São Paulo (USP), São Carlos 13566-590, SP, Brazil;
| | - Michela Vanessa Ribeiro Machado
- Department of Morphology and Pathology, Medical College of Jundiai, Jundiaí, São Paulo 13202-550, SP, Brazil; (F.B.C.); (E.G.M.); (R.d.M.); (M.d.A.eS.M.); (M.V.R.M.); (V.A.R.F.); (M.R.d.C.)
| | - Marco Antonio Hungaro Duarte
- Department of Dentistry, Endodontics and Dental Materials, Bauru School of Dentistry, University of São Paulo (FOB/USP), Bauru 17012-901, SP, Brazil;
| | - Murilo Priori Alcalde
- Department of Health Science, Unisagrado University Center, Bauru 17011-160, SP, Brazil;
| | - Daniela Vieira Buchaim
- Postgraduate Program in Structural and Functional Interactions in Rehabilitation, University of Marilia (UNIMAR), Marília 17525-902, SP, Brazil;
- Medical School, University Center of Adamantina (UniFAI), Adamantina 17800-000, SP, Brazil
| | - Rogério Leone Buchaim
- Department of Biological Sciences, Bauru School of Dentistry, University of São Paulo (FOB/USP), Bauru 17012-901, SP, Brazil;
- Correspondence: ; Tel.: +55-1432358220
| | - Victor Augusto Ramos Fernandes
- Department of Morphology and Pathology, Medical College of Jundiai, Jundiaí, São Paulo 13202-550, SP, Brazil; (F.B.C.); (E.G.M.); (R.d.M.); (M.d.A.eS.M.); (M.V.R.M.); (V.A.R.F.); (M.R.d.C.)
- Laboratory of Anatomy, University Center Our Lady of Patronage (CEUNSP), University of South Cruise, Itu 13300-200, SP, Brazil
| | | | - André Antonio Pelegrine
- Research Institute, Postgraduate Program, São Leopoldo Mandic, School of Dentistry, Campinas 13045-755, SP, Brazil;
| | - Marcelo Rodrigues da Cunha
- Department of Morphology and Pathology, Medical College of Jundiai, Jundiaí, São Paulo 13202-550, SP, Brazil; (F.B.C.); (E.G.M.); (R.d.M.); (M.d.A.eS.M.); (M.V.R.M.); (V.A.R.F.); (M.R.d.C.)
- Interunit Postgraduate Program in Bioengineering (EESC/FMRP/IQSC), University of São Paulo (USP), São Carlos 13566-590, SP, Brazil;
- Laboratory of Anatomy, University Center Our Lady of Patronage (CEUNSP), University of South Cruise, Itu 13300-200, SP, Brazil
- Research Institute, Postgraduate Program, São Leopoldo Mandic, School of Dentistry, Campinas 13045-755, SP, Brazil;
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Cun X, Hosta-Rigau L. Topography: A Biophysical Approach to Direct the Fate of Mesenchymal Stem Cells in Tissue Engineering Applications. NANOMATERIALS (BASEL, SWITZERLAND) 2020; 10:E2070. [PMID: 33092104 PMCID: PMC7590059 DOI: 10.3390/nano10102070] [Citation(s) in RCA: 61] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/21/2020] [Revised: 10/16/2020] [Accepted: 10/16/2020] [Indexed: 12/17/2022]
Abstract
Tissue engineering is a promising strategy to treat tissue and organ loss or damage caused by injury or disease. During the past two decades, mesenchymal stem cells (MSCs) have attracted a tremendous amount of interest in tissue engineering due to their multipotency and self-renewal ability. MSCs are also the most multipotent stem cells in the human adult body. However, the application of MSCs in tissue engineering is relatively limited because it is difficult to guide their differentiation toward a specific cell lineage by using traditional biochemical factors. Besides biochemical factors, the differentiation of MSCs also influenced by biophysical cues. To this end, much effort has been devoted to directing the cell lineage decisions of MSCs through adjusting the biophysical properties of biomaterials. The surface topography of the biomaterial-based scaffold can modulate the proliferation and differentiation of MSCs. Presently, the development of micro- and nano-fabrication techniques has made it possible to control the surface topography of the scaffold precisely. In this review, we highlight and discuss how the main topographical features (i.e., roughness, patterns, and porosity) are an efficient approach to control the fate of MSCs and the application of topography in tissue engineering.
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Affiliation(s)
| | - Leticia Hosta-Rigau
- DTU Health Tech, Centre for Nanomedicine and Theranostics, Technical University of Denmark, Nils Koppels Allé, Building 423, 2800 Kgs. Lyngby, Denmark;
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Wen G, Xu J, Wu T, Zhang S, Chai Y, Kang Q, Li G. Functionalized Polycaprolactone/Hydroxyapatite Composite Microspheres for Promoting Bone Consolidation in a Rat Distraction Osteogenesis Model. J Orthop Res 2020; 38:961-971. [PMID: 31777101 DOI: 10.1002/jor.24542] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/18/2019] [Accepted: 11/19/2019] [Indexed: 02/04/2023]
Abstract
Distraction osteogenesis (DO) is an ideal model to study bone regeneration. The major limitation is the relatively long period required for new bone consolidation. Here, we investigated whether the application of polycaprolactone (PCL) and hydroxyapatite (HA) composite microspheres could enhance bone formation in DO. Pure PCL microspheres and composite PCL and 10% HA microspheres were synthesized. Bone mesenchymal stem cells isolated from green fluorescent protein rats (GFP-rBMSCs) were cultured with microspheres in a rotary bioreactor system. Scanning electron microscopy was used to examine the microstructures. Osteogenic differentiation of rBMSCs was confirmed. Moreover, PCL/HA (20 mg) and PCL (20 mg) were locally administered into the distraction gap in the rat DO model toward the end of the distraction period. Imaging detection, mechanical and histological examinations were performed to assess the quality of the 4-week regenerates. Results showed that the microspheres were of uniform size and monodisperse. After incubation with rBMSCs in culture, PCL/HA microspheres showed a better ability for cell adhesion and osteogenic differentiation compared with PCL microspheres. In vivo, bone volume/total tissue volume, bone mineral density, and mechanical properties of the new callus were significantly higher in the PCL/HA group compared with the PCL group. Histological analyses confirmed improved bone formation and vascularization in PCL/HA group. We presented an effective protocol for the generation of functionalized microspheres and demonstrated implantation of PCL/HA microspheres into the distraction regenerate could significantly enhance bone consolidation. Thus, the application of PCL/HA composite microspheres may be a novel approach for promoting bone regeneration. This article is protected by copyright. All rights reserved © 2019 Orthopaedic Research Society. Published by Wiley Periodicals, Inc. J Orthop Res 38:961-971, 2020.
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Affiliation(s)
- Gen Wen
- The First Affiliated Hospital of Soochow University, Suzhou, PR China
| | - Jia Xu
- Department of Orthopaedic Surgery, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, PR China
| | - Tianyi Wu
- Department of Orthopaedic Surgery, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, PR China
| | - Shengmin Zhang
- Advanced Biomaterials and Tissue Engineering Center, Huazhong University of Science and Technology, Wuhan, PR China
| | - Yimin Chai
- Department of Orthopaedic Surgery, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, PR China
| | - Qinglin Kang
- Department of Orthopaedic Surgery, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, PR China
| | - Gang Li
- Department of Orthopaedics & Traumatology, Stem Cells and Regeneration Laboratory, Li Ka Shing Institute of Health Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Prince of Wales Hospital, Hong Kong SAR, PR China
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7
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Zhang Q, Ma L, Zheng S, Wang Y, Feng M, Shuai Y, Duan B, Fan X, Yang M, Mao C. Air-plasma treatment promotes bone-like nano-hydroxylapatite formation on protein films for enhanced in vivo osteogenesis. Biomater Sci 2019; 7:2326-2334. [PMID: 30907916 PMCID: PMC6555639 DOI: 10.1039/c9bm00020h] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Introducing hydroxylapatite (HAp) into biomolecular materials is a promising approach to improve their bone regenerative capability. Thus a facile method needs to be developed to achieve this goal. Here we show that a simple air-plasma treatment of silk fibroin (SF) films for 5 min induced the formation of bone-like plate-shaped nano-HAp (nHAp) on their surface and the resultant material efficiently enhanced in vivo osteogenesis. The air-plasma-treated SF films (termed A-SF) presented surface nano-pillars and enhanced hydrophilicity compared to the pristine SF films (termed SF), making the A-SF and SF films induce the formation of plate-shaped/more-crystalline and needle-like/less-crystalline nHAp, respectively. The mineralized A-SF and SF films (termed A-SF-nHAp and SF-nHAp, respectively) and their non-mineralized counterparts were seeded with rat mesenchymal stem cells and subcutaneously implanted into the rat models. The A-SF-nHAp and A-SF films exhibited more efficient bone formation than the SF-nHAp and SF films in 4 weeks due to their unique nanotopography, with the A-SF-nHAp films being more efficient than the A-SF films. This work shows that a combination of the air-plasma treatment and the subsequent nHAp mineralization most efficiently promotes bone formation. Our plasma-based method is an attractive approach to enhance the bone regenerative capacity of protein-based biomaterials.
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Affiliation(s)
- Qing Zhang
- School of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China
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8
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Cardoso GB, Chacon E, Chacon PG, Bordeaux-Rego P, Duarte AS, Saad STO, Zavaglia CA, Cunha MR. Fatty acid is a potential agent for bone tissue induction: In vitro and in vivo approach. Exp Biol Med (Maywood) 2017; 242:1765-1771. [PMID: 28893084 DOI: 10.1177/1535370217731104] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Our hypothesis was to investigate the fatty acid potential as a bone induction factor. In vitro and in vivo studies were performed to evaluate this approach. Oleic acid was used in a 0.5 wt.% concentration. Polycaprolactone was used as the polymeric matrix by combining solvent-casting and particulate-leaching techniques, with a final porosity of 70 wt.%, investigated by SEM images. Contact angle measurements were produced to investigate the influence of oleic acid on polycaprolactone chains. Cell culture was performed using adipocyte-derived stem cells to evaluate biocompatibility and bioactivity properties. In addition, in vivo studies were performed to evaluate the induction potential of oleic acid addition. Adipocyte-derived stem cells were used to provide differentiation after 21 days of culture. Likewise, information were obtained with in vivo data and cellular invagination was observed on both scaffolds (polycaprolactone and polycaprolactone /oleic acid); interestingly, the scaffold with oleic acid addition demonstrated that cellular migrations are not related to the surrounding tissue, indicating bioactive potential. Our hypothesis is that fatty acid may be used as a potential induction factor for bone tissue engineering. The study's findings indicate oleic acid as a possible agent for bone induction, according to data on cell differentiation, proliferation, and migration. Impact statement The biomaterial combined in this study on bone regeneration is innovative and shows promising results in the treatment of bone lesions. Polycaprolactone (PCL) and oleic acid have been studied separately. In this research, we combined biomaterials to assess the stimulus and the speed of bone healing.
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Affiliation(s)
- Guinea Bc Cardoso
- 1 Department of Manufacturing and Materials Engineering, School of Mechanical Engineering, 28132 University of Campinas , Campinas 13083-860, Brazil.,2 INCT Biofabris, 28132 University of Campinas , Campinas, São Paulo 13083-970, Brazil
| | - Erivelto Chacon
- 3 Department of Morphology and Pathology, School of Medicine of Jundiai, Jundiai 13202-550, Brazil
| | - Priscila Gl Chacon
- 3 Department of Morphology and Pathology, School of Medicine of Jundiai, Jundiai 13202-550, Brazil
| | - Pedro Bordeaux-Rego
- 4 Umbilical Cord Blood Bank, Hematology Hemotherapy Center INCT, 28132 University of Campinas , São Paulo, Brazil, Campinas, São Paulo 13083-878, Brazil
| | - Adriana Ss Duarte
- 4 Umbilical Cord Blood Bank, Hematology Hemotherapy Center INCT, 28132 University of Campinas , São Paulo, Brazil, Campinas, São Paulo 13083-878, Brazil
| | - Sara T Olalla Saad
- 4 Umbilical Cord Blood Bank, Hematology Hemotherapy Center INCT, 28132 University of Campinas , São Paulo, Brazil, Campinas, São Paulo 13083-878, Brazil
| | - Cecilia Ac Zavaglia
- 1 Department of Manufacturing and Materials Engineering, School of Mechanical Engineering, 28132 University of Campinas , Campinas 13083-860, Brazil.,2 INCT Biofabris, 28132 University of Campinas , Campinas, São Paulo 13083-970, Brazil
| | - Marcelo R Cunha
- 3 Department of Morphology and Pathology, School of Medicine of Jundiai, Jundiai 13202-550, Brazil
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Sun T, Zhou K, Liu M, Guo X, Qu Y, Cui W, Shao Z, Zhang X, Xu S. Loading of BMP-2-related peptide onto three-dimensional nano-hydroxyapatite scaffolds accelerates mineralization in critical-sized cranial bone defects. J Tissue Eng Regen Med 2017; 12:864-877. [PMID: 27885807 DOI: 10.1002/term.2371] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2015] [Revised: 07/14/2016] [Accepted: 11/09/2016] [Indexed: 01/08/2023]
Abstract
Extrusion free-forming, as a rapid prototyping technique, is extensively applied in fabricating ceramic material in bone tissue engineering. To improve the osteoinductivity of nano-hydroxyapatite (nHA) scaffold fabricated by extrusion free-forming, in this study, we incorporated a new peptide (P28) and optimized the superficial microstructure after shaping by controlling the sintering temperature. P28, a novel bone morphogenic protein 2 (BMP-2)-related peptide, was designed in this study. Analysis of the structure, physicochemical properties and release kinetics of P28 from nHA sintered at temperatures ranging from 1000 °C to 1400 °C revealed that nHA sintered at 1000 °C had higher porosity, preferable pore size and better capacity to control P28 release than that sintered at other temperatures. Moreover, the nHA scaffold sintered at 1000 °C with P28 showed improved adhesion, proliferation and osteogenic differentiation of MC3T3-E1 cells compared with scaffolds lacking P28 or BMP-2. In vivo, nHA scaffolds sintered at 1000 °C with P28 or BMP-2 induced greater bone regeneration in critical-sized rat cranial defects at 6 and 12 weeks post-implantation compared with scaffolds lacking P28 or BMP-2. Thus, nHA scaffolds sintered at 1000 °C and loaded with P28 may be excellent biomaterials for bone tissue engineering. Copyright © 2016 John Wiley & Sons, Ltd.
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Affiliation(s)
- Tingfang Sun
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Kui Zhou
- State Key Lab of Materials Processing and Die & Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Man Liu
- Department of Gastroenterology and Hepatology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Xiaodong Guo
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Yanzhen Qu
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Wei Cui
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - ZengWu Shao
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Xianglin Zhang
- State Key Lab of Materials Processing and Die & Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Shuyun Xu
- Department of Respiratory and Critical Care Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
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Griffin KS, Davis KM, McKinley TO, Anglen JO, Chu TMG, Boerckel JD, Kacena MA. Evolution of Bone Grafting: Bone Grafts and Tissue Engineering Strategies for Vascularized Bone Regeneration. Clin Rev Bone Miner Metab 2015. [DOI: 10.1007/s12018-015-9194-9] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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