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Lu G, Li X, Wang P, Li X, Wang Y, Zhu J, Ronca A, D'Amora U, Liu W, Hui X. Polysaccharide-Based Composite Hydrogel with Hierarchical Microstructure for Enhanced Vascularization and Skull Regeneration. Biomacromolecules 2023; 24:4970-4988. [PMID: 37729544 DOI: 10.1021/acs.biomac.3c00655] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/22/2023]
Abstract
Critical-size skull defects caused by trauma, infection, and tumor resection raise great demands for efficient bone substitutes. Herein, a hybrid cross-linked hierarchical microporous hydrogel scaffold (PHCLS) was successfully assembled by a multistep procedure, which involved (i) the preparation of poly(lactic-co-glycolic)/nanohydroxyapatite (PLGA-HAP) porous microspheres, (ii) embedding the spheres in a solution of dopamine-modified hyaluronic acid and collagen I (Col I) and cross-linking via dopamine polyphenols binding to (i) Col I amino groups (via Michael addition) and (ii) PLGA-HAP (via calcium ion chelation). The introduction of PLGA-HAP not only improved the diversity of pore size and pore communication inside the matrix but also greatly enhanced the compressive strength (5.24-fold, 77.5 kPa) and degradation properties to construct a more stable mechanical structure. In particular, the PHCLS (200 mg, nHAP) promoted the proliferation, infiltration, and angiogenic differentiation of bone marrow mesenchymal stem cells in vitro, as well as significant ectopic angiogenesis and mineralization with a storage modulus enhancement of 2.5-fold after 30 days. Meanwhile, the appropriate matrix microenvironment initiated angiogenesis and early osteogenesis by accelerating endogenous stem cell recruitment in situ. Together, the PHCLS allowed substantial skull reconstruction in the rabbit cranial defect model, achieving 85.2% breaking load strength and 84.5% bone volume fractions in comparison to the natural cranium, 12 weeks after implantation. Overall, this study reveals that the hierarchical microporous hydrogel scaffold provides a promising strategy for skull defect treatment.
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Affiliation(s)
- Gonggong Lu
- Department of Neurosurgery, West China Hospital, Sichuan University, 37# Guoxue Lane, Chengdu, Sichuan 610041, P.R. China
- National Engineering Research Center for Biomaterials, Sichuan University, 29# Wangjiang Road, Chengdu, Sichuan 610064, P.R. China
- College of Biomedical Engineering, Sichuan University, 29# Wangjiang Road, Chengdu, Sichuan 610064, P.R. China
| | - Xiang Li
- Department of Neurosurgery, West China Hospital, Sichuan University, 37# Guoxue Lane, Chengdu, Sichuan 610041, P.R. China
| | - Peilei Wang
- National Engineering Research Center for Biomaterials, Sichuan University, 29# Wangjiang Road, Chengdu, Sichuan 610064, P.R. China
- College of Biomedical Engineering, Sichuan University, 29# Wangjiang Road, Chengdu, Sichuan 610064, P.R. China
| | - Xing Li
- National Engineering Research Center for Biomaterials, Sichuan University, 29# Wangjiang Road, Chengdu, Sichuan 610064, P.R. China
- College of Biomedical Engineering, Sichuan University, 29# Wangjiang Road, Chengdu, Sichuan 610064, P.R. China
| | - Yuxiang Wang
- National Engineering Research Center for Biomaterials, Sichuan University, 29# Wangjiang Road, Chengdu, Sichuan 610064, P.R. China
- College of Biomedical Engineering, Sichuan University, 29# Wangjiang Road, Chengdu, Sichuan 610064, P.R. China
| | - Jiayi Zhu
- National Engineering Research Center for Biomaterials, Sichuan University, 29# Wangjiang Road, Chengdu, Sichuan 610064, P.R. China
- College of Biomedical Engineering, Sichuan University, 29# Wangjiang Road, Chengdu, Sichuan 610064, P.R. China
| | - Alfredo Ronca
- National Research Council, Institute of Polymers, Composites and Biomaterials, Naples 80125, Italy
| | - Ugo D'Amora
- National Research Council, Institute of Polymers, Composites and Biomaterials, Naples 80125, Italy
| | - Wenke Liu
- Department of Neurosurgery, West China Hospital, Sichuan University, 37# Guoxue Lane, Chengdu, Sichuan 610041, P.R. China
| | - Xuhui Hui
- Department of Neurosurgery, West China Hospital, Sichuan University, 37# Guoxue Lane, Chengdu, Sichuan 610041, P.R. China
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2
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Arambula-Maldonado R, Liu Y, Xing M, Mequanint K. Bioactive and electrically conductive GelMA-BG-MWCNT nanocomposite hydrogel bone biomaterials. BIOMATERIALS ADVANCES 2023; 154:213616. [PMID: 37708668 DOI: 10.1016/j.bioadv.2023.213616] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/14/2023] [Revised: 08/17/2023] [Accepted: 09/01/2023] [Indexed: 09/16/2023]
Abstract
Natural bone is a complex organic-inorganic composite tissue that possesses endogenous electrically conductive properties in response to mechanical forces. Mimicking these unique properties collectively in a single synthetic biomaterial has so far remained a formidable task. In this study, we report a synthesis strategy that comprised gelatin methacryloyl (GelMA), sol-gel derived tertiary bioactive glass (BG), and uniformly dispersed multiwall carbon nanotubes (MWCNTs) to create nanocomposite hydrogels that mimic the organic-inorganic composition of bone. Using this strategy, biomaterials that are electrically conductive and possess electro-mechanical properties similar to endogenous bone were prepared without affecting their biocompatibility. Nanocomposite hydrogel biomaterials were biodegradable and promoted biomineralization, and supported multipotent mesenchymal progenitor cell (10T1/2) cell interactions and differentiation into an osteogenic lineage. To the best of our knowledge, this work presents the first study to functionally characterize suitable electro-mechanical responses in nanocomposite hydrogels, a key process that occurs in the natural bone to drive its repair and regeneration. Overall, the results demonstrated GelMA-BG-MWCNT nanocomposite hydrogels have the potential to become promising bioactive biomaterials for use in bone repair and regeneration.
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Affiliation(s)
- Rebeca Arambula-Maldonado
- School of Biomedical Engineering, University of Western Ontario, 1151 Richmond Street, London N6A 5B9, Canada
| | - Yuqing Liu
- Department of Mechanical Engineering, University of Manitoba, Winnipeg, MB R3T 2N2, Canada
| | - Malcolm Xing
- Department of Mechanical Engineering, University of Manitoba, Winnipeg, MB R3T 2N2, Canada
| | - Kibret Mequanint
- School of Biomedical Engineering, University of Western Ontario, 1151 Richmond Street, London N6A 5B9, Canada; Department of Chemical and Biochemical Engineering, University of Western Ontario, 1151 Richmond Street, London N6A 5B9, Canada.
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3
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Gritsch L, Bossard C, Jallot E, Jones JR, Lao J. Bioactive glass-based organic/inorganic hybrids: an analysis of the current trends in polymer design and selection. J Mater Chem B 2023; 11:519-545. [PMID: 36541433 DOI: 10.1039/d2tb02089k] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Bioactive glass-based organic/inorganic hybrids are a family of materials holding great promise in the biomedical field. Developed from bioactive glasses following recent advances in sol-gel and polymer chemistry, they can overcome many limitations of traditional composites typically used in bone repair and orthopedics. Thanks to their unique molecular structure, hybrids are often characterized by synergistic properties that go beyond a mere combination of their two components; it is possible to synthesize materials with a wide variety of mechanical and biological properties. The polymeric component, in particular, can be tailored to prepare tough, load-bearing materials, or rubber-like elastomers. It can also be a key factor in the determination of a wide range of interesting biological properties. In addition, polymers can also be used within hybrids as carriers for therapeutic ions (although this is normally the role of silica). This review offers a brief look into the history of hybrids, from the discovery of bioactive glasses to the latest developments, with a particular emphasis on polymer design and chemistry. First the benefits and limitations of hybrids will be discussed and compared with those of alternative approaches (for instance, nanocomposites). Then, key advances in the field will be presented focusing on the polymeric component: its chemistry, its physicochemical and biological advantages, its drawbacks, and selected applications. Comprehensive tables summarizing all the polymers used to date to fabricate sol-gel hybrids for biomedical applications are also provided, to offer a handbook of all the available candidates for hybrid synthesis. In addition to the current trends, open challenges and possible avenues of future development are proposed.
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Affiliation(s)
- Lukas Gritsch
- Université Clermont Auvergne, CNRS/IN2P3, Laboratoire de Physique de Clermont, 4 Avenue Blaise Pascal, 63178 Aubière (Clermont-Ferrand), France. .,Technogym S.p.A., via Calcinaro 2861, 47521 Cesena (FC), Italy
| | - Cédric Bossard
- Université Clermont Auvergne, CNRS/IN2P3, Laboratoire de Physique de Clermont, 4 Avenue Blaise Pascal, 63178 Aubière (Clermont-Ferrand), France.
| | - Edouard Jallot
- Université Clermont Auvergne, CNRS/IN2P3, Laboratoire de Physique de Clermont, 4 Avenue Blaise Pascal, 63178 Aubière (Clermont-Ferrand), France.
| | - Julian R Jones
- Department of Materials, Imperial College London, South Kensington Campus, London, SW7 2AZ, UK
| | - Jonathan Lao
- Université Clermont Auvergne, CNRS/IN2P3, Laboratoire de Physique de Clermont, 4 Avenue Blaise Pascal, 63178 Aubière (Clermont-Ferrand), France.
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4
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Lu G, Xu Y, Liu Q, Chen M, Sun H, Wang P, Li X, Wang Y, Li X, Hui X, Luo E, Liu J, Jiang Q, Liang J, Fan Y, Sun Y, Zhang X. An instantly fixable and self-adaptive scaffold for skull regeneration by autologous stem cell recruitment and angiogenesis. Nat Commun 2022; 13:2499. [PMID: 35523800 PMCID: PMC9076642 DOI: 10.1038/s41467-022-30243-5] [Citation(s) in RCA: 46] [Impact Index Per Article: 23.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2021] [Accepted: 04/20/2022] [Indexed: 02/08/2023] Open
Abstract
Limited stem cells, poor stretchability and mismatched interface fusion have plagued the reconstruction of cranial defects by cell-free scaffolds. Here, we designed an instantly fixable and self-adaptive scaffold by dopamine-modified hyaluronic acid chelating Ca2+ of the microhydroxyapatite surface and bonding type I collagen to highly simulate the natural bony matrix. It presents a good mechanical match and interface integration by appropriate calcium chelation, and responds to external stress by flexible deformation. Meanwhile, the appropriate matrix microenvironment regulates macrophage M2 polarization and recruits endogenous stem cells. This scaffold promotes the proliferation and osteogenic differentiation of BMSCs in vitro, as well as significant ectopic mineralization and angiogenesis. Transcriptome analysis confirmed the upregulation of relevant genes and signalling pathways was associated with M2 macrophage activation, endogenous stem cell recruitment, angiogenesis and osteogenesis. Together, the scaffold realized 97 and 72% bone cover areas after 12 weeks in cranial defect models of rabbit (Φ = 9 mm) and beagle dog (Φ = 15 mm), respectively. Limited stem cells and mismatched interface fusion have plagued biomaterial-mediated cranial reconstruction. Here, the authors engineer an instantly fixable and self-adaptive scaffold to promote calcium chelation and interface integration, regulate macrophage M2 polarization, and recruit endogenous stem cells.
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Affiliation(s)
- Gonggong Lu
- National Engineering Research Center for Biomaterials, Sichuan University, 29# Wangjiang Road, Chengdu, Sichuan, 610064, P. R. China.,Department of Neurosurgery, West China Hospital, Sichuan University, 37# Guoxue Lane, Chengdu, Sichuan, 610041, P. R. China.,College of Biomedical Engineering, Sichuan University, 29# Wangjiang Road, Chengdu, Sichuan, 610064, P. R. China
| | - Yang Xu
- National Engineering Research Center for Biomaterials, Sichuan University, 29# Wangjiang Road, Chengdu, Sichuan, 610064, P. R. China.,College of Biomedical Engineering, Sichuan University, 29# Wangjiang Road, Chengdu, Sichuan, 610064, P. R. China
| | - Quanying Liu
- National Engineering Research Center for Biomaterials, Sichuan University, 29# Wangjiang Road, Chengdu, Sichuan, 610064, P. R. China.,College of Biomedical Engineering, Sichuan University, 29# Wangjiang Road, Chengdu, Sichuan, 610064, P. R. China
| | - Manyu Chen
- National Engineering Research Center for Biomaterials, Sichuan University, 29# Wangjiang Road, Chengdu, Sichuan, 610064, P. R. China.,College of Biomedical Engineering, Sichuan University, 29# Wangjiang Road, Chengdu, Sichuan, 610064, P. R. China
| | - Huan Sun
- National Engineering Research Center for Biomaterials, Sichuan University, 29# Wangjiang Road, Chengdu, Sichuan, 610064, P. R. China.,College of Biomedical Engineering, Sichuan University, 29# Wangjiang Road, Chengdu, Sichuan, 610064, P. R. China
| | - Peilei Wang
- National Engineering Research Center for Biomaterials, Sichuan University, 29# Wangjiang Road, Chengdu, Sichuan, 610064, P. R. China.,College of Biomedical Engineering, Sichuan University, 29# Wangjiang Road, Chengdu, Sichuan, 610064, P. R. China
| | - Xing Li
- National Engineering Research Center for Biomaterials, Sichuan University, 29# Wangjiang Road, Chengdu, Sichuan, 610064, P. R. China.,College of Biomedical Engineering, Sichuan University, 29# Wangjiang Road, Chengdu, Sichuan, 610064, P. R. China
| | - Yuxiang Wang
- National Engineering Research Center for Biomaterials, Sichuan University, 29# Wangjiang Road, Chengdu, Sichuan, 610064, P. R. China.,College of Biomedical Engineering, Sichuan University, 29# Wangjiang Road, Chengdu, Sichuan, 610064, P. R. China
| | - Xiang Li
- Department of Neurosurgery, West China Hospital, Sichuan University, 37# Guoxue Lane, Chengdu, Sichuan, 610041, P. R. China
| | - Xuhui Hui
- Department of Neurosurgery, West China Hospital, Sichuan University, 37# Guoxue Lane, Chengdu, Sichuan, 610041, P. R. China
| | - En Luo
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases & Department of Oral and Maxillofacial Surgery, West China Hospital of Stomatology, Sichuan University, 14#, 3rd, Section of Renmin South Road, Chengdu, Sichuan, 610041, P.R. China
| | - Jun Liu
- School of Biological Science & Medical Engineering, Southeast University, 2# Sipai Building, Xuanwu District, Nanjing, Jiangsu, 210096, P. R. China
| | - Qing Jiang
- National Engineering Research Center for Biomaterials, Sichuan University, 29# Wangjiang Road, Chengdu, Sichuan, 610064, P. R. China.,College of Biomedical Engineering, Sichuan University, 29# Wangjiang Road, Chengdu, Sichuan, 610064, P. R. China
| | - Jie Liang
- National Engineering Research Center for Biomaterials, Sichuan University, 29# Wangjiang Road, Chengdu, Sichuan, 610064, P. R. China.,College of Biomedical Engineering, Sichuan University, 29# Wangjiang Road, Chengdu, Sichuan, 610064, P. R. China.,Sichuan Testing Center for Biomaterials and Medical Devices, Sichuan University, 29 Wangjiang Road, Chengdu, 610064, P. R. China
| | - Yujiang Fan
- National Engineering Research Center for Biomaterials, Sichuan University, 29# Wangjiang Road, Chengdu, Sichuan, 610064, P. R. China. .,College of Biomedical Engineering, Sichuan University, 29# Wangjiang Road, Chengdu, Sichuan, 610064, P. R. China.
| | - Yong Sun
- National Engineering Research Center for Biomaterials, Sichuan University, 29# Wangjiang Road, Chengdu, Sichuan, 610064, P. R. China. .,College of Biomedical Engineering, Sichuan University, 29# Wangjiang Road, Chengdu, Sichuan, 610064, P. R. China.
| | - Xingdong Zhang
- National Engineering Research Center for Biomaterials, Sichuan University, 29# Wangjiang Road, Chengdu, Sichuan, 610064, P. R. China.,College of Biomedical Engineering, Sichuan University, 29# Wangjiang Road, Chengdu, Sichuan, 610064, P. R. China
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Aslankoohi N, Lin S, Mequanint K. Bioactive fluorescent hybrid microparticles as a stand-alone osteogenic differentiation inducer. Mater Today Bio 2022; 13:100187. [PMID: 34977526 PMCID: PMC8683730 DOI: 10.1016/j.mtbio.2021.100187] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2021] [Revised: 12/07/2021] [Accepted: 12/08/2021] [Indexed: 12/02/2022] Open
Abstract
Osteogenic differentiation of stem cells is one of the essential steps in bone regeneration. While supplementing exogenous factors using differentiation media is the established method to differentiate stem cells into osteoblasts on biomaterials, designing biomaterials that can act as a stand-alone differentiation inducer and promote bone regeneration is preferred for clinical translation. In this work, we report dexamethasone-loaded organic-inorganic hybrid microparticles synthesized from an intrinsically fluorescent poly (ester amide) and tertiary bioactive glass (PEA-BG) as a stand-alone osteogenic differentiation inducer. The mechanical properties data indicated that the compressive modulus of fluorescent hybrid microparticles could be modulated by its composition. The hybrid fluorescent microparticles supported the adhesion and proliferation of 10T1/2 cells in culture for up to seven days. Both pristine and dexamethasone-loaded PEA-BG microparticles were able to induce osteogenic differentiation of 10T1/2 cells in the absence of any media supplement, to a level even higher than standard osteogenic media, as evidenced by the expression of osteogenic markers on gene and protein levels and matrix mineralization. Taken together, the fluorescent PEA-BG hybrid microparticles have the potential to be used as a stand-alone biomaterial for osteogenic differentiation and bone regeneration.
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Affiliation(s)
- Neda Aslankoohi
- School of Biomedical Engineering, The University of Western Ontario, London, Ontario, N6A 5B9, Canada
| | - Shigang Lin
- Department of Chemical and Biochemical Engineering, The University of Western Ontario, London, Ontario, N6A 5B9, Canada
| | - Kibret Mequanint
- School of Biomedical Engineering, The University of Western Ontario, London, Ontario, N6A 5B9, Canada
- Department of Chemical and Biochemical Engineering, The University of Western Ontario, London, Ontario, N6A 5B9, Canada
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6
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Arambula‐Maldonado R, Geraili A, Xing M, Mequanint K. Tissue engineering and regenerative therapeutics: The nexus of chemical engineering and translational medicine. CAN J CHEM ENG 2021. [DOI: 10.1002/cjce.24094] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
| | - Armin Geraili
- Department of Chemical and Biochemical Engineering University of Western Ontario London Ontario Canada
| | - Malcolm Xing
- Department of Mechanical Engineering University of Manitoba Winnipeg Manitoba Canada
| | - Kibret Mequanint
- School of Biomedical Engineering, University of Western Ontario London Ontario Canada
- Department of Chemical and Biochemical Engineering University of Western Ontario London Ontario Canada
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7
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Surface Modifications for Implants Lifetime extension: An Overview of Sol-Gel Coatings. COATINGS 2020. [DOI: 10.3390/coatings10060589] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
The limited lifetime of implants entails having patients undergo replacement surgeries, several times throughout life in young patients, with significant risks for them and extensive cost for healthcare service. The overcoming of such inconvenience is still today a hard challenge for the scholars of the biomedical and biomaterial fields. The improvement of the currently employed implants through surface modification by coatings application is the main strategy proposed to avoid implants failure, and the sol-gel coating is an ideal technology to achieve this goal. Therefore, the present review aims to provide an overview of the most important problems leading to implant failure, the sol-gel coating technology, and its use as a strategy to overcome such issues.
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8
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Mirza S, Jolly R, Zia I, Saad Umar M, Owais M, Shakir M. Bioactive Gum Arabic/κ-Carrageenan-Incorporated Nano-Hydroxyapatite Nanocomposites and Their Relative Biological Functionalities in Bone Tissue Engineering. ACS OMEGA 2020; 5:11279-11290. [PMID: 32478215 PMCID: PMC7254512 DOI: 10.1021/acsomega.9b03761] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/06/2019] [Accepted: 04/03/2020] [Indexed: 06/01/2023]
Abstract
The present frontiers of bone tissue engineering are being pushed by novel biomaterials that exhibit phenomenal biocompatibility and adequate mechanical strength. In this work, we fabricated a ternary system incorporating nano-hydroxyapatite (n-HA)/gum arabic (GA)/κ-carrageenan (κ-CG) with varying concentrations, i.e., 60/30/10 (CHG1), 60/20/20 (CHG2), and 60/10/30 (CHG3). A binary system with n-HA and GA was also prepared with a ratio of 60/40 (HG) and compared with the ternary system. A rapid mineralization of the apatite layer was observed for the ternary systems after incubation in simulated body fluid (SBF) for 15 days as corroborated by scanning electron microscopy (SEM). CHG2 exhibited the maximum apatite layer deposition. Further, the nanocomposites were physicochemically analyzed by Fourier transform infrared (FTIR) spectroscopy, X-ray diffraction (XRD), and mechanical testing. Their results revealed a substantial interaction among the components, appropriate crystallinity, and significantly enhanced compressive strength and modulus for the ternary nanocomposites. The greatest mechanical strength was achieved by the scaffold containing equal amounts of GA and κ-CG. The cytotoxicity was evaluated by culturing osteoblast-like MG63 cells, which exhibited the highest cell viability for the CHG2 nanocomposite system. It was further supported by confocal microscopy, which revealed the maximum cell proliferation for the CHG2 scaffold. In addition, enhanced antibacterial activity, protein adsorption, biodegradability, and osteogenic differentiation were observed for the ternary nanocomposites. Osteogenic gene markers, such as osteocalcin (OCN), osteonectin (ON), and osteopontin (OPN), were present in higher quantities in the CHG2 and CHG3 nanocomposites as confirmed by western blotting. These results substantiated the pertinence of n-HA-, GA-, and κ-CG-incorporated ternary systems to bone implant materials.
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Affiliation(s)
- Sumbul Mirza
- Inorganic
Chemistry Laboratory, Department of Chemistry, Aligarh Muslim University, Aligarh 202002, India
| | - Reshma Jolly
- Inorganic
Chemistry Laboratory, Department of Chemistry, Aligarh Muslim University, Aligarh 202002, India
| | - Iram Zia
- Inorganic
Chemistry Laboratory, Department of Chemistry, Aligarh Muslim University, Aligarh 202002, India
| | - Mohd Saad Umar
- Molecular
Immunology Group Lab, Interdisciplinary Biotechnology Unit, Aligarh Muslim University, Aligarh 202002, India
| | - Mohammad Owais
- Molecular
Immunology Group Lab, Interdisciplinary Biotechnology Unit, Aligarh Muslim University, Aligarh 202002, India
| | - Mohammad Shakir
- Inorganic
Chemistry Laboratory, Department of Chemistry, Aligarh Muslim University, Aligarh 202002, India
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Aslankoohi N, Mondal D, Rizkalla AS, Mequanint K. Bone Repair and Regenerative Biomaterials: Towards Recapitulating the Microenvironment. Polymers (Basel) 2019; 11:E1437. [PMID: 31480693 PMCID: PMC6780693 DOI: 10.3390/polym11091437] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2019] [Revised: 08/24/2019] [Accepted: 08/25/2019] [Indexed: 02/07/2023] Open
Abstract
Biomaterials and tissue engineering scaffolds play a central role to repair bone defects. Although ceramic derivatives have been historically used to repair bone, hybrid materials have emerged as viable alternatives. The rationale for hybrid bone biomaterials is to recapitulate the native bone composition to which these materials are intended to replace. In addition to the mechanical and dimensional stability, bone repair scaffolds are needed to provide suitable microenvironments for cells. Therefore, scaffolds serve more than a mere structural template suggesting a need for better and interactive biomaterials. In this review article, we aim to provide a summary of the current materials used in bone tissue engineering. Due to the ever-increasing scientific publications on this topic, this review cannot be exhaustive; however, we attempted to provide readers with the latest advance without being redundant. Furthermore, every attempt is made to ensure that seminal works and significant research findings are included, with minimal bias. After a concise review of crystalline calcium phosphates and non-crystalline bioactive glasses, the remaining sections of the manuscript are focused on organic-inorganic hybrid materials.
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Affiliation(s)
- Neda Aslankoohi
- School of Biomedical Engineering, The University of Western Ontario, London, ON N6A 5B9, Canada.
| | - Dibakar Mondal
- Department of Chemical and Biochemical Engineering, The University of Western Ontario, London, ON N6A 5B9, Canada.
| | - Amin S Rizkalla
- School of Biomedical Engineering, The University of Western Ontario, London, ON N6A 5B9, Canada.
- Department of Chemical and Biochemical Engineering, The University of Western Ontario, London, ON N6A 5B9, Canada.
- Schulich School of Medicine and Dentistry, The University of Western Ontario, London, ON N6A 5B9, Canada.
| | - Kibret Mequanint
- School of Biomedical Engineering, The University of Western Ontario, London, ON N6A 5B9, Canada.
- Department of Chemical and Biochemical Engineering, The University of Western Ontario, London, ON N6A 5B9, Canada.
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10
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Granel H, Bossard C, Collignon AM, Wauquier F, Lesieur J, Rochefort GY, Jallot E, Lao J, Wittrant Y. Bioactive Glass/Polycaprolactone Hybrid with a Dual Cortical/Trabecular Structure for Bone Regeneration. ACS APPLIED BIO MATERIALS 2019; 2:3473-3483. [DOI: 10.1021/acsabm.9b00407] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Henri Granel
- Human Nutrition Unit, UMR1019, INRA Research Center, Theix 63122, France
| | - Cédric Bossard
- Laboratoire de Physique de Clermont-Ferrand, 4 Avenue Blaise Pascal, Aubiere 80026−63177, France
| | - Anne-Margaux Collignon
- Faculté de Chirurgie Dentaire, Paris Descartes, EA2496, Laboratoires Pathologies, Imagerie et Biothérapies Orofaciales, 1 rue Maurice Arnoux, Montrouge 92120, France
| | - Fabien Wauquier
- Human Nutrition Unit, UMR1019, INRA Research Center, Theix 63122, France
| | - Julie Lesieur
- Faculté de Chirurgie Dentaire, Paris Descartes, EA2496, Laboratoires Pathologies, Imagerie et Biothérapies Orofaciales, 1 rue Maurice Arnoux, Montrouge 92120, France
| | - Gael Y Rochefort
- Faculté de Chirurgie Dentaire, Paris Descartes, EA2496, Laboratoires Pathologies, Imagerie et Biothérapies Orofaciales, 1 rue Maurice Arnoux, Montrouge 92120, France
| | - Edouard Jallot
- Laboratoire de Physique de Clermont-Ferrand, 4 Avenue Blaise Pascal, Aubiere 80026−63177, France
| | - Jonathan Lao
- Laboratoire de Physique de Clermont-Ferrand, 4 Avenue Blaise Pascal, Aubiere 80026−63177, France
| | - Yohann Wittrant
- Human Nutrition Unit, UMR1019, INRA Research Center, Theix 63122, France
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11
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Elmowafy E, Abdal-Hay A, Skouras A, Tiboni M, Casettari L, Guarino V. Polyhydroxyalkanoate (PHA): applications in drug delivery and tissue engineering. Expert Rev Med Devices 2019; 16:467-482. [PMID: 31058550 DOI: 10.1080/17434440.2019.1615439] [Citation(s) in RCA: 73] [Impact Index Per Article: 14.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
INTRODUCTION The applications of naturally obtained polymers are tremendously increased due to them being biocompatible, biodegradable, environmentally friendly and renewable in nature. Among them, polyhydroxyalkanoates are widely studied and they can be utilized in many areas of human life research such as drug delivery, tissue engineering, and other medical applications. AREAS COVERED This review provides an overview of the polyhydroxyalkanoates biosynthesis and their possible applications in drug delivery in the range of micro- and nano-size. Moreover, the possible applications in tissue engineering are covered considering macro- and microporous scaffolds and extracellular matrix analogs. EXPERT COMMENTARY The majority of synthetic plastics are non-biodegradable so, in the last years, a renewed interest is growing to develop alternative processes to produce biologically derived polymers. Among them, PHAs present good properties such as high immunotolerance, low toxicity, biodegradability, so, they are promisingly using as biomaterials in biomedical applications.
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Affiliation(s)
- Enas Elmowafy
- a Department of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmacy , Ain Shams University , Cairo , Egypt
| | - Abdalla Abdal-Hay
- b Dentistry and Oral Health School , The University of Queensland , Qld , Australia
| | - Athanasios Skouras
- c Department of Biomolecular Sciences , University of Urbino , Urbino (PU) , Italy.,d Department of Life Sciences , School of Sciences, European University Cyprus , Nicosia , Cyprus
| | - Mattia Tiboni
- c Department of Biomolecular Sciences , University of Urbino , Urbino (PU) , Italy
| | - Luca Casettari
- c Department of Biomolecular Sciences , University of Urbino , Urbino (PU) , Italy
| | - Vincenzo Guarino
- e Institute of Polymers, composites and Biomaterials , National Research Council of Italy , Naples , Italy
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12
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Xia L, Ma W, Zhou Y, Gui Z, Yao A, Wang D, Takemura A, Uemura M, Lin K, Xu Y. Stimulatory Effects of Boron Containing Bioactive Glass on Osteogenesis and Angiogenesis of Polycaprolactone: In Vitro Study. BIOMED RESEARCH INTERNATIONAL 2019; 2019:8961409. [PMID: 31011582 PMCID: PMC6442456 DOI: 10.1155/2019/8961409] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/09/2018] [Revised: 12/25/2018] [Accepted: 02/03/2019] [Indexed: 12/14/2022]
Abstract
Polycaprolactone (PCL) has attracted great attention for bone regeneration attributed to its cost-efficiency, high toughness, and good processability. However, the relatively low elastic modulus, hydrophobic nature, and insufficient bioactivity of pure PCL limited its wider application for bone regeneration. In the present study, the effects of the addition of boron containing bioactive glass (B-BG) materials on the mechanical properties and biological performance of PCL polymer were investigated with different B-BG contents (0, 10, 20, 30, and 40 wt.%), in order to evaluate the potential applications of B-BG/PCL composites for bone regeneration. The results showed that the B-BG/PCL composites possess better tensile strength, human neutral pH value, and fast degradation as compared to pure PCL polymers. Moreover, the incorporation of B-BG could enhance proliferation, osteogenic differentiation, and angiogenic factor expression for rat bone marrow stromal cells (rBMSCs) as compared to pure PCL polymers. Importantly, the B-BG also promoted the angiogenic differentiation for human umbilical vein endothelial cells (HUVECs). These enhanced effects had a concentration dependence of B-BG content, while 30 wt.% B-BG/PCL composites achieved the greatest stimulatory effect. Therefore the 30 wt.% B-BG/PCL composites have potential applications in bone reconstruction fields.
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Affiliation(s)
- Lunguo Xia
- Department of Orthodontics, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai Key Laboratory of Stomatology, China
| | - Wudi Ma
- Department of Oral Surgery, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai Key Laboratory of Stomatology, China
| | - Yuning Zhou
- Department of Oral Surgery, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai Key Laboratory of Stomatology, China
| | - Zhipeng Gui
- Department of Oral Surgery, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai Key Laboratory of Stomatology, China
| | - Aihua Yao
- Key Laboratory of the Advanced Civil Engineering Materials, Tongji University, Ministration of Education, China
| | - Deping Wang
- Key Laboratory of the Advanced Civil Engineering Materials, Tongji University, Ministration of Education, China
| | | | - Mamoru Uemura
- Department of Anatomy, Osaka Dental University, Osaka, Japan
| | - Kailin Lin
- Department of Oral and Craniomaxillofacial Science, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai Key Laboratory of Stomatology, China
| | - Yuanjin Xu
- Department of Oral Surgery, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai Key Laboratory of Stomatology, China
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13
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Mondal D, Dixon SJ, Mequanint K, Rizkalla AS. Bioactivity, Degradation, and Mechanical Properties of Poly(vinylpyrrolidone- co-triethoxyvinylsilane)/Tertiary Bioactive Glass Hybrids. ACS APPLIED BIO MATERIALS 2018; 1:1369-1381. [PMID: 34996241 DOI: 10.1021/acsabm.8b00344] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Currently, composite and class I hybrid biomaterials are used for tissue regeneration applications. To improve and better control biomaterial properties, we synthesized class II organic/inorganic (O/I) hybrids, in which organic polymers and inorganic tertiary bioactive glass (TBG) were covalently cross-linked. To tailor their microstructure, bioactivity, degradation, and mechanical properties, we altered the degree of cross-linking by varying the amount of functional groups in the polymer that mediate covalent bonding to the TBG. We synthesized class II hybrids in a two-step process: first, vinylpyrrolidone (VP) and triethoxyvinylsilane (TEVS) were copolymerized at various molar ratios to obtain different amounts of silane functional groups in the copolymer; second, TBG and the copolymer were mixed and allowed to undergo hydrolysis and polycondensation forming Si-O-Si- and Si-O-P-bridging networks between the organic and inorganic phases. Higher amounts of functional groups increased copolymer-TBG covalent bonding and decreased degradation and the release of TBG dissolution products. Incubation in simulated body fluid led to biomimetic apatite deposition on the hybrid biomaterial surfaces, which was primarily dependent on O/I weight ratios. A higher TBG content improved apatite deposition and biocompatibility. Porous and interconnected three-dimensional scaffolds, fabricated by indirect 3D printing using polycaprolactone as a sacrificial template, had intriguing yield and compressive strengths, compressive moduli, and toughness. These studies demonstrate, for the first time, that the functionality of our synthesized copolymers greatly affects the nature of O/I matrix formation and degradation behavior of the class II hybrid biomaterials, creating possibilities for tailoring the physical, biochemical, and mechanical properties of scaffold biomaterials for tissue regeneration and related applications.
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14
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Surface modifications of titanium implants by coating with bioactive and biocompatible poly (ε-caprolactone)/SiO2 hybrids synthesized via sol–gel. ARAB J CHEM 2018. [DOI: 10.1016/j.arabjc.2015.02.010] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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15
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Fu Q, Jia W, Lau GY, Tomsia AP. Strength, toughness, and reliability of a porous glass/biopolymer composite scaffold. J Biomed Mater Res B Appl Biomater 2018; 106:1209-1217. [PMID: 28570023 PMCID: PMC5718971 DOI: 10.1002/jbm.b.33924] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2017] [Revised: 04/27/2017] [Accepted: 04/29/2017] [Indexed: 11/11/2022]
Abstract
Development of bioactive glass and ceramic scaffolds intended for the reconstruction of large segmental bone defects remains a challenge for materials science due to the complexities involved in clinical implantation, bone-implant reaction, implant degradation and the multiple loading modes the implants subjected to. A comprehensive evaluation of the mechanical properties of inorganic scaffolds and exploration of new ways to toughen brittle constructs are critical prior to their successful application in loaded sites. A simple and widely adopted approach involves the coating of an inorganic scaffold with a polymeric material. In this work, a systematic evaluation of the influence of a biopolymer, polycaprolactone (PCL), coating on the mechanical performance of bioactive glass scaffolds was carried out. Results from this work indicate that a biopolymer PCL coating was more effective in increasing the compressive strength and reliability of the glass scaffold under compression, but less effective in improving its flexural strength or fracture toughness. This is the first report that reveals the limited successfulness of a polymer coating in improving the toughness of strong scaffolds, suggesting that new and novel ways of toughening inorganic scaffolds should be future research directions for scaffolds applied in loaded sites. © 2017 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater, 106B: 1209-1217, 2018.
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Affiliation(s)
- Qiang Fu
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California, 94720
| | - Weitao Jia
- Department of Orthopedic Surgery, Shanghai Jiaotong University Affiliated Sixth People's Hospital, Shanghai, 200233, China
| | - Grace Y Lau
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California, 94720
| | - Antoni P Tomsia
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California, 94720
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16
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Wang D, Zhang C, Ren L, Li D, Yu J. Biodegradable AIEgen-functionalised mesoporous bioactive glass nanoparticles for drug delivery and cell imaging. Inorg Chem Front 2018. [DOI: 10.1039/c7qi00575j] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
AIEgen-functionalised mesoporous bioactive glass nanospheres with excellent degradability in an acid environment show potential application in drug delivery and cell imaging.
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Affiliation(s)
- Duo Wang
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry
- College of Chemistry
- Jilin University
- Changchun 130012
- P. R. China
| | - Chengkai Zhang
- Key Laboratory for Molecular Enzymonlogy & Engineering
- The Ministry of Education
- Jilin University
- Changchun
- P. R. China
| | - Li Ren
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry
- College of Chemistry
- Jilin University
- Changchun 130012
- P. R. China
| | - Dongdong Li
- Department of Materials Science
- Key Laboratory of Automobile Materials of MOE
- Jilin University
- Changchun 130012
- P. R. China
| | - Jihong Yu
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry
- College of Chemistry
- Jilin University
- Changchun 130012
- P. R. China
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17
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Shakir M, Mirza S, Jolly R, Rauf A, Owais M. Synthesis, characterization and in vitro screening of a nano-hydroxyapatite/chitosan/Euryale ferox nanoensemble – an inimitable approach for bone tissue engineering. NEW J CHEM 2018. [DOI: 10.1039/c7nj02953e] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In order to explore novel synthetic bone scaffolds, a biomimmetic, osteoinductive, tricomposite scaffold has been synthesized incorporating Euryale ferox (EF) with nano-hydroxyapatite and chitosan.
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Affiliation(s)
- Mohammad Shakir
- Inorganic Chemistry Laboratory
- Department of Chemistry
- Aligarh Muslim University
- Aligarh
- India
| | - Sumbul Mirza
- Inorganic Chemistry Laboratory
- Department of Chemistry
- Aligarh Muslim University
- Aligarh
- India
| | - Reshma Jolly
- Inorganic Chemistry Laboratory
- Department of Chemistry
- Aligarh Muslim University
- Aligarh
- India
| | - Ahmar Rauf
- Molecular Immunology Group Lab
- Interdisciplinary Biotechnology Unit
- Aligarh Muslim University
- Aligarh
- India
| | - Mohammad Owais
- Molecular Immunology Group Lab
- Interdisciplinary Biotechnology Unit
- Aligarh Muslim University
- Aligarh
- India
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18
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Abdal-hay A, Bartnikowski M, Hamlet S, Ivanovski S. Electrospun biphasic tubular scaffold with enhanced mechanical properties for vascular tissue engineering. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2018; 82:10-18. [DOI: 10.1016/j.msec.2017.08.041] [Citation(s) in RCA: 50] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/03/2017] [Revised: 07/17/2017] [Accepted: 08/10/2017] [Indexed: 12/12/2022]
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19
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Mechanically-competent and cytocompatible polycaprolactone-borophosphosilicate hybrid biomaterials. J Mech Behav Biomed Mater 2017; 75:180-189. [DOI: 10.1016/j.jmbbm.2017.07.010] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2017] [Revised: 06/30/2017] [Accepted: 07/04/2017] [Indexed: 12/11/2022]
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20
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Catauro M, Tranquillo E, Illiano M, Sapio L, Spina A, Naviglio S. The Influence of the Polymer Amount on the Biological Properties of PCL/ZrO₂ Hybrid Materials Synthesized via Sol-Gel Technique. MATERIALS (BASEL, SWITZERLAND) 2017; 10:E1186. [PMID: 29039803 PMCID: PMC5666992 DOI: 10.3390/ma10101186] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/21/2017] [Revised: 10/10/2017] [Accepted: 10/13/2017] [Indexed: 12/11/2022]
Abstract
Organic/inorganic hybrid materials are attracting considerable attention in the biomedical area. The sol-gel process provides a convenient way to produce many bioactive organic-inorganic hybrids. Among those, poly(e-caprolactone)/zirconia (PCL/ZrO₂) hybrids have proved to be bioactive with no toxic materials. The aim of this study was to investigate the effects of these materials on the cellular response as a function of the PCL content, in order to evaluate their potential use in the biomedical field. For this purpose, PCL/ZrO₂ hybrids containing 6, 12, 24, and 50 wt % of PCL were synthesized by the sol-gel method. The effects of their presence on the NIH-3T3 fibroblast cell line carrying out direct cell number counting, MTT, cell damage assays, flow cytometry-based analysis of cell-cycle progression, and immunoblotting experiments. The results confirm and extend the findings that PCL/ZrO₂ hybrids are free from toxicity. The hybrids containing 12 and 24 wt % PCL, (more than 6 and 50 wt % ones) enhance cell proliferation when compared to pure ZrO₂ by affecting cell cycle progression. The finding that the content of PCL in PCL/ZrO₂ hybrids differently supports cell proliferation suggests that PCL/ZrO₂ hybrids could be useful tools with different potential clinical applications.
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Affiliation(s)
- Michelina Catauro
- Department of Industrial and Information Engineering, University of Campania "Luigi Vanvitelli", Via Roma 29, 81031 Aversa, Italy.
| | - Elisabetta Tranquillo
- Department of Industrial and Information Engineering, University of Campania "Luigi Vanvitelli", Via Roma 29, 81031 Aversa, Italy.
- Department of Biochemistry, Biophysics and General Pathology, Medical School, University of Campania "Luigi Vanvitelli", Via L. De Crecchio 7, 80138 Naples, Italy.
| | - Michela Illiano
- Department of Biochemistry, Biophysics and General Pathology, Medical School, University of Campania "Luigi Vanvitelli", Via L. De Crecchio 7, 80138 Naples, Italy.
| | - Luigi Sapio
- Department of Biochemistry, Biophysics and General Pathology, Medical School, University of Campania "Luigi Vanvitelli", Via L. De Crecchio 7, 80138 Naples, Italy.
| | - Annamaria Spina
- Department of Biochemistry, Biophysics and General Pathology, Medical School, University of Campania "Luigi Vanvitelli", Via L. De Crecchio 7, 80138 Naples, Italy.
| | - Silvio Naviglio
- Department of Biochemistry, Biophysics and General Pathology, Medical School, University of Campania "Luigi Vanvitelli", Via L. De Crecchio 7, 80138 Naples, Italy.
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Zhang M, Cai S, Zhang F, Xu G, Wang F, Yu N, Wu X. Preparation and corrosion resistance of magnesium phytic acid/hydroxyapatite composite coatings on biodegradable AZ31 magnesium alloy. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2017; 28:82. [PMID: 28424946 DOI: 10.1007/s10856-017-5876-9] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/30/2016] [Accepted: 02/28/2017] [Indexed: 06/07/2023]
Abstract
In this work, a magnesium phytic acid/hydroxyapatite composite coating was successfully prepared on AZ31 magnesium alloy substrate by chemical conversion deposition technology with the aim of improving its corrosion resistance and bioactivity. The influence of hydroxyapatite (HA) content on the microstructure and corrosion resistance of the coatings was investigated. The results showed that with the increase of HA content in phytic acid solution, the cracks on the surface of the coatings gradually reduced, which subsequently improved the corrosion resistance of these coated magnesium alloy. Electrochemical measurements in simulated body fluid (SBF) revealed that the composite coating with 45 wt.% HA addition exhibited superior surface integrity and significantly improved corrosion resistance compared with the single phytic acid conversion coating. The results of the immersion test in SBF showed that the composite coating could provide more effective protection for magnesium alloy substrate than that of the single phytic acid coating and showed good bioactivity. Magnesium phytic acid/hydroxyapatite composite, with the desired bioactivity, can be synthesized through chemical conversion deposition technology as protective coatings for surface modification of the biodegradable magnesium alloy implants. The design idea of the new type of biomaterial is belong to the concept of "third generation biomaterial". Corrosion behavior and bioactivity of coated magnesium alloy are the key issues during implantation. In this study, preparation and corrosion behavior of magnesium phytic acid/hydroxyapatite composite coatings on magnesium alloy were studied. The basic findings and significance of this paper are as follows: 1. A novel environmentally friendly, homogenous and crack-free magnesium phytic acid/hydroxyapatite composite coating was fabricated on AZ31 magnesium alloy via chemical conversion deposition technology with the aim of enhancing its corrosion resistance and bioactivity. The chemical conversion coatings, which are formed through the reaction between the substrate and the environment, have attracted increasing attention owing to the relative low treatment temperature, favorable bonding to substrate and simple implementation process. 2. With the increasing of hydroxyapatite (HA) content, the crack width in the composite coatings and the thickness of the coatings exhibit obviously decreased. The reason is probably that when adding HA into the phytic acid solution, the amount of active hydroxyl groups in the phytic acid are reduced via forming the coordination bond between P-OH groups from phytic acid and P-OH groups from the surface of HA, thus decreasing the coating thickness and hydrogen formation, as well as avoiding coating cracking. 3. By adjusting the HA content to 45 wt.%, a dense and relatively smooth composite coating with ~1.4 μm thickness is obtained on magnesium alloy, and exhibits high corrosion resistance and good bioactivity when compared with the single phytic acid conversion coating.
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Affiliation(s)
- Min Zhang
- Key Laboratory for Advanced Ceramics and Machining Technology of Ministry of Education, Tianjin University, Tianjin, 300072, China
| | - Shu Cai
- Key Laboratory for Advanced Ceramics and Machining Technology of Ministry of Education, Tianjin University, Tianjin, 300072, China.
| | - Feiyang Zhang
- Key Laboratory for Advanced Ceramics and Machining Technology of Ministry of Education, Tianjin University, Tianjin, 300072, China
| | - Guohua Xu
- Shanghai Changzheng Hospital, Shanghai, 200003, China.
| | - Fengwu Wang
- Key Laboratory for Advanced Ceramics and Machining Technology of Ministry of Education, Tianjin University, Tianjin, 300072, China
| | - Nian Yu
- Key Laboratory for Advanced Ceramics and Machining Technology of Ministry of Education, Tianjin University, Tianjin, 300072, China
| | - Xiaodong Wu
- Shanghai Changzheng Hospital, Shanghai, 200003, China
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Gómez-Cerezo N, Sánchez-Salcedo S, Izquierdo-Barba I, Arcos D, Vallet-Regí M. In vitro colonization of stratified bioactive scaffolds by pre-osteoblast cells. Acta Biomater 2016; 44:73-84. [PMID: 27521495 DOI: 10.1016/j.actbio.2016.08.014] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2016] [Revised: 07/28/2016] [Accepted: 08/10/2016] [Indexed: 10/25/2022]
Abstract
UNLABELLED Mesoporous bioactive glass-polycaprolactone (MBG-PCL) scaffolds have been prepared by robocasting, a layer by layer rapid prototyping method, by stacking of individual strati. Each stratus was independently analyzed during the cell culture tests with MC3T3-E1 preosteblast-like cells. The presence of MBG stimulates the colonization of the scaffolds by increasing the cell proliferation and differentiation. MBG-PCL composites not only enhanced pre-osteoblast functions but also allowed cell movement along its surface, reaching the upper stratus faster than in pure PCL scaffolds. The cells behavior on each individual stratus revealed that the scaffolds colonization depends on the chemical stimuli supplied by the MBG dissolution and surface changes associated to the apatite-like formation during the bioactive process. Finally, scanning electron and fluorescence microscopy revealed that the kinetic of cell migration strongly depends on the architectural features of the scaffolds, in such a way that layers interconnections are used as migration routes to reach the farther scaffolds locations from the initial cells source. STATEMENT OF SIGNIFICANCE This manuscript provides new insights on cell behavior in bioceramic/polymer macroporous scaffolds prepared by rapid prototyping methods. The experiments proposed in this work have allowed the evaluation of cell behavior within the different levels of the scaffolds, i.e. from the initials source of cells towards the farther scaffold locations. We could demonstrate that the in vitro cell colonization is encouraged by the presence of a highly bioactive mesoporous glass (MBG). This bioceramic enhances the cell migration towards upper strati through the dissolution of chemical signals and the changes occurred on the scaffolds surface during the bioactive process. In addition the MBG promotes preosteblastic proliferation and differentiation respect to scaffolds made of pure polycaprolactone. Finally, this study reveals the significance of the architectural design to accelerate the cell colonization. These experiments put light on the factors that should be taken into account to accelerate the regeneration processes under in vivo conditions.
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23
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Wen Z, Chen J, Wang H, Zhong S, Hu Y, Wang Z, Zhang Q. Abalone water-soluble matrix for self-healing biomineralization of tooth defects. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2016; 67:182-187. [DOI: 10.1016/j.msec.2016.05.015] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/22/2016] [Revised: 04/19/2016] [Accepted: 05/05/2016] [Indexed: 10/21/2022]
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A new composite scaffold of bioactive glass nanoparticles/graphene: Synchronous improvements of cytocompatibility and mechanical property. Colloids Surf B Biointerfaces 2016; 145:438-446. [DOI: 10.1016/j.colsurfb.2016.05.026] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2015] [Revised: 05/09/2016] [Accepted: 05/10/2016] [Indexed: 12/12/2022]
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25
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Ding Y, Li W, Müller T, Schubert DW, Boccaccini AR, Yao Q, Roether JA. Electrospun Polyhydroxybutyrate/Poly(ε-caprolactone)/58S Sol-Gel Bioactive Glass Hybrid Scaffolds with Highly Improved Osteogenic Potential for Bone Tissue Engineering. ACS APPLIED MATERIALS & INTERFACES 2016; 8:17098-17108. [PMID: 27295496 DOI: 10.1021/acsami.6b03997] [Citation(s) in RCA: 68] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Electrospinning of biopolymer and inorganic substances is one of the efficient ways to combine various advantageous properties in one single fibrous structure with potential for tissue engineering applications. In the present study, to integrate the high stiffness of polyhydroxybutyrate (PHB), the flexibility of poly(ε-caprolactone) (PCL) and the bioactivity of 58S bioactive glass, PHB/PCL/58S sol-gel bioactive glass hybrid scaffolds were fabricated using combined electrospinning and sol-gel method. Physical features such as fiber diameter distribution, mechanical strength and Young's modulus were characterized thoroughly. FTIR analysis demonstrated the successful incorporation of 58S bioactive glass into the blend polymers, which greatly improved the hydrophilicity of PHB/PCL fibermats. The primary biological response of MG-63 osteoblast-like cells on the prepared fibrous scaffolds was evaluated, proving that the 58S glass sol containing hybrid scaffold were not only favorable to MG-63 cell adhesion but also slightly enhanced cell viability and significantly increased alkaline phosphate activity .
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Affiliation(s)
- Yaping Ding
- Institute of Polymer Materials, University of Erlangen-Nuremberg , Martensstrasse 7, 91058 Erlangen, Germany
| | - Wei Li
- Institute of Biomaterials, University of Erlangen-Nuremberg , Cauerstrasse 6, 91058 Erlangen, Germany
| | - Teresa Müller
- Institute of Polymer Materials, University of Erlangen-Nuremberg , Martensstrasse 7, 91058 Erlangen, Germany
| | - Dirk W Schubert
- Institute of Polymer Materials, University of Erlangen-Nuremberg , Martensstrasse 7, 91058 Erlangen, Germany
| | - Aldo R Boccaccini
- Institute of Biomaterials, University of Erlangen-Nuremberg , Cauerstrasse 6, 91058 Erlangen, Germany
| | - Qingqing Yao
- Institute of Advanced Materials for Nano-Bio Applications, Wenzhou Medical University , 270 Xueyuan Xi Road, Wenzhou, Zhejiang 325027, China
| | - Judith A Roether
- Institute of Polymer Materials, University of Erlangen-Nuremberg , Martensstrasse 7, 91058 Erlangen, Germany
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Keivani F, Shokrollahi P, Zandi M, Irani S, F Shokrolahi, Khorasani SC. Engineered electrospun poly(caprolactone)/polycaprolactone-g-hydroxyapatite nano-fibrous scaffold promotes human fibroblasts adhesion and proliferation. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2016; 68:78-88. [PMID: 27523999 DOI: 10.1016/j.msec.2016.05.098] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/20/2015] [Revised: 05/03/2016] [Accepted: 05/23/2016] [Indexed: 12/17/2022]
Abstract
Polycaprolactone (PCL)/hydroxyapatite nano-composites are among the best candidates for tissue engineering. However, interactions between nHAp and PCL are difficult to control leading to inhomogeneous dispersion of the bio-ceramic particles. Grafting of polymer chains at high density/chain length while promotes the phase compatibility may result in reduced HAp exposed surface area and therefore, bioactivity is compromised. This issue is addressed here by grafting PCL chains onto HAp nano-particles through ring opening polymerization of ε-caprolactone (PCL-g-HAp). FTIR and TGA analysis showed that PCL (6.9wt%), was successfully grafted on the HAp. PCL/PCL-g-HAp nano-fibrous scaffold showed up to 10 and 33% enhancement in tensile strength and modulus, respectively, compared to those of PCL/HAp. The effects of HAp on the in vitro HAp formation were investigated for both the PCL/HAp and PCL/PCL-g-HAp scaffolds. Precipitation of HAp on the nano-composite scaffolds observed after 15days incubation in simulated body fluid (SBF), as confirmed by scanning electron microscopy (SEM), and energy dispersive X-ray spectroscopy (EDX). Human fibroblasts were seeded on PCL, PCL/HAp and PCL/PCL-g-HAp scaffolds. According to MTT assay, the highest cell proliferation was recorded for PCL/PCL-g-HAp nano-composite, at all time intervals (1-21days, P<0.001). Fluorescent microscopy (of DAPI stained samples) and electron microscopy images showed that all nano-fibrous scaffolds (PCL, PCL/HAp, and PCL/PCL-g-HAp), were non-toxic against cells, while more cell adhesion, and the most uniform cell distribution observed on the PCL/PCL-g-HAp. Overall, grafting of relatively short chains of PCL on the surface of HAp nano-particles stimulates fibroblasts adhesion and proliferation on the PCL/PCL-g-HAp nano-composite.
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Affiliation(s)
- F Keivani
- Biology Department, Science and Research Branch, Islamic Azad University, Tehran, Iran
| | - P Shokrollahi
- Department of Biomaterials, Faculty of Science, Iran Polymer and Petrochemical Institute, Tehran, Iran.
| | - M Zandi
- Department of Biomaterials, Faculty of Science, Iran Polymer and Petrochemical Institute, Tehran, Iran
| | - S Irani
- Biology Department, Science and Research Branch, Islamic Azad University, Tehran, Iran
| | - F Shokrolahi
- Department of Biomaterials, Faculty of Science, Iran Polymer and Petrochemical Institute, Tehran, Iran
| | - S C Khorasani
- Biology Department, Science and Research Branch, Islamic Azad University, Tehran, Iran
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27
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Li K, Huang J, Gao H, Zhong Y, Cao X, Chen Y, Zhang L, Cai J. Reinforced Mechanical Properties and Tunable Biodegradability in Nanoporous Cellulose Gels: Poly(l-lactide-co-caprolactone) Nanocomposites. Biomacromolecules 2016; 17:1506-15. [DOI: 10.1021/acs.biomac.6b00109] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- Kai Li
- College
of Chemistry and Molecular Sciences, Wuhan University, Wuhan, 430072, People’s Republic of China
| | - Junchao Huang
- College
of Chemistry and Molecular Sciences, Wuhan University, Wuhan, 430072, People’s Republic of China
| | - Huichang Gao
- School
of Materials Science and Engineering, South China University of Technology, Guangzhou, 510641, People’s Republic of China
| | - Yi Zhong
- College
of Chemistry and Molecular Sciences, Wuhan University, Wuhan, 430072, People’s Republic of China
| | - Xiaodong Cao
- School
of Materials Science and Engineering, South China University of Technology, Guangzhou, 510641, People’s Republic of China
| | - Yun Chen
- Department
of Biomedical Engineering, School of Basic Medical Science, Wuhan University, Wuhan, 430071, People’s Republic of China
| | - Lina Zhang
- College
of Chemistry and Molecular Sciences, Wuhan University, Wuhan, 430072, People’s Republic of China
| | - Jie Cai
- College
of Chemistry and Molecular Sciences, Wuhan University, Wuhan, 430072, People’s Republic of China
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28
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Cheng D, Ren Z, Guo L, Zhang C, Jia X, Cai Q, Yang X. Thermal-based regulation on biomineralization and biological properties of bioglass nanoparticles decorated PAN-based carbon nanofibers. RSC Adv 2016. [DOI: 10.1039/c5ra19740f] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The mechanism and model for biomineralization behavior and cell culture of CNF/BG sintered at various temperatures.
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Affiliation(s)
- Dan Cheng
- State Key Laboratory of Organic–Inorganic Composites
- College of Materials Science and Engineering
- Beijing University of Chemical Technology
- Beijing 100029
- P. R. China
| | - Zhiwei Ren
- State Key Laboratory of Organic–Inorganic Composites
- College of Materials Science and Engineering
- Beijing University of Chemical Technology
- Beijing 100029
- P. R. China
| | - Lijuan Guo
- State Key Laboratory of Organic–Inorganic Composites
- College of Materials Science and Engineering
- Beijing University of Chemical Technology
- Beijing 100029
- P. R. China
| | - Cuihua Zhang
- State Key Laboratory of Organic–Inorganic Composites
- College of Materials Science and Engineering
- Beijing University of Chemical Technology
- Beijing 100029
- P. R. China
| | - Xiaolong Jia
- State Key Laboratory of Organic–Inorganic Composites
- College of Materials Science and Engineering
- Beijing University of Chemical Technology
- Beijing 100029
- P. R. China
| | - Qing Cai
- State Key Laboratory of Organic–Inorganic Composites
- College of Materials Science and Engineering
- Beijing University of Chemical Technology
- Beijing 100029
- P. R. China
| | - Xiaoping Yang
- State Key Laboratory of Organic–Inorganic Composites
- College of Materials Science and Engineering
- Beijing University of Chemical Technology
- Beijing 100029
- P. R. China
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29
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Kim JR, Nosrat A, Fouad AF. Interfacial characteristics of Biodentine and MTA with dentine in simulated body fluid. J Dent 2015; 43:241-7. [DOI: 10.1016/j.jdent.2014.11.004] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2014] [Revised: 10/28/2014] [Accepted: 11/08/2014] [Indexed: 10/24/2022] Open
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30
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Li Y, Cai S, Xu G, Shen S, Zhang M, Zhang T, Sun X. Synthesis and characterization of a phytic acid/mesoporous 45S5 bioglass composite coating on a magnesium alloy and degradation behavior. RSC Adv 2015. [DOI: 10.1039/c5ra00087d] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The composite coating consists of an interior layer of mesoporous 45S5 bioglass and an outer layer of phytic acid/magnesium phytic acid compounds.
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Affiliation(s)
- Yan Li
- Key Laboratory for Advanced Ceramics and Machining Technology of Ministry of Education
- Tianjin University
- Tianjin 300072
- People's Republic of China
| | - Shu Cai
- Key Laboratory for Advanced Ceramics and Machining Technology of Ministry of Education
- Tianjin University
- Tianjin 300072
- People's Republic of China
| | - Guohua Xu
- Shanghai Changzheng Hospital
- Shanghai 200003
- People's Republic of China
| | - Sibo Shen
- Key Laboratory for Advanced Ceramics and Machining Technology of Ministry of Education
- Tianjin University
- Tianjin 300072
- People's Republic of China
| | - Min Zhang
- Key Laboratory for Advanced Ceramics and Machining Technology of Ministry of Education
- Tianjin University
- Tianjin 300072
- People's Republic of China
| | - Tong Zhang
- Key Laboratory for Advanced Ceramics and Machining Technology of Ministry of Education
- Tianjin University
- Tianjin 300072
- People's Republic of China
| | - Xiaohong Sun
- Key Laboratory for Advanced Ceramics and Machining Technology of Ministry of Education
- Tianjin University
- Tianjin 300072
- People's Republic of China
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31
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Niu Y, Guo L, Liu J, Shen H, Su J, An X, Yu B, Wei J, Shin JW, Guo H, Ji F, He D. Bioactive and degradable scaffolds of the mesoporous bioglass and poly(l-lactide) composite for bone tissue regeneration. J Mater Chem B 2015; 3:2962-2970. [PMID: 32262496 DOI: 10.1039/c4tb01796j] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Bioactive scaffolds of the m-BG–PLLA composite with excellent biocompatibility, degradability and osteogenesis, which could be promising implants for bone regeneration.
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32
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Chen J, Du Y, Que W, Xing Y, Lei B. Content-dependent biomineralization activity and mechanical properties based on polydimethylsiloxane–bioactive glass–poly(caprolactone) hybrids monoliths for bone tissue regeneration. RSC Adv 2015. [DOI: 10.1039/c5ra09075j] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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33
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Salarian M, Xu WZ, Wang Z, Sham TK, Charpentier PA. Hydroxyapatite-TiO(2)-based nanocomposites synthesized in supercritical CO(2) for bone tissue engineering: physical and mechanical properties. ACS APPLIED MATERIALS & INTERFACES 2014; 6:16918-16931. [PMID: 25184699 DOI: 10.1021/am5044888] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Calcium phosphate-based nanocomposites offer a unique solution toward producing scaffolds for orthopedic and dental implants. However, despite attractive bioactivity and biocompatibility, hydroxyapatite (HAp) has been limited in heavy load-bearing applications due to its intrinsically low mechanical strength. In this work, to improve the mechanical properties of HAp, we grew HAp nanoplates from the surface of one-dimensional titania nanorod structures by combining a coprecipitation and sol-gel methodology using supercritical fluid processing with carbon dioxide (scCO2). The effects of metal alkoxide concentration (1.1-1.5 mol/L), reaction temperature (60-80 °C), and pressure (6000-8000 psi) on the morphology, crystallinity, and surface area of the resulting nanostructured composites were examined using scanning electron microscopy (SEM), transmission electron microscopy (TEM), powder X-ray diffraction (XRD), and Brunauer-Emmet-Teller (BET) method. Chemical composition of the products was characterized using Fourier transform infrared (FTIR) spectroscopy, X-ray photoelectron spectroscopy (XPS), and X-ray absorption near-edge structure (XANES) analyses. HAp nanoplates and HAp-TiO2 nanocomposites were homogeneously mixed within poly(ε-caprolactone) (PCL) to develop scaffolds with enhanced physical and mechanical properties for bone regeneration. Mechanical behavior analysis demonstrated that the Young's and flexural moduli of the PCL/HAp-TiO2 composites were substantially higher than the PCL/HAp composites. Therefore, this new synthesis methodology in scCO2 holds promise for bone tissue engineering with improved mechanical properties.
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Affiliation(s)
- Mehrnaz Salarian
- Biomedical Engineering Graduate Program, University of Western Ontario , London, Ontario N6A 5B9, Canada
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34
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Tas AC. The use of physiological solutions or media in calcium phosphate synthesis and processing. Acta Biomater 2014; 10:1771-92. [PMID: 24389317 DOI: 10.1016/j.actbio.2013.12.047] [Citation(s) in RCA: 78] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2013] [Revised: 12/02/2013] [Accepted: 12/17/2013] [Indexed: 11/29/2022]
Abstract
This review examined the literature to spot uses, if any, of physiological solutions/media for the in situ synthesis of calcium phosphates (CaP) under processing conditions (i.e. temperature, pH, concentration of inorganic ions present in media) mimicking those prevalent in the human hard tissue environments. There happens to be a variety of aqueous solutions or media developed for different purposes; sometimes they have been named as physiological saline, isotonic solution, cell culture solution, metastable CaP solution, supersaturated calcification solution, simulated body fluid or even dialysate solution (for dialysis patients). Most of the time such solutions were not used as the aqueous medium to perform the biomimetic synthesis of calcium phosphates, and their use was usually limited to the in vitro testing of synthetic biomaterials. This review illustrates that only a limited number of research studies used physiological solutions or media such as Earle's balanced salt solution, Bachra et al. solutions or Tris-buffered simulated body fluid solution containing 27mM HCO3(-) for synthesizing CaP, and these studies have consistently reported the formation of X-ray-amorphous CaP nanopowders instead of Ap-CaP or stoichiometric hydroxyapatite (HA, Ca10(PO4)6(OH)2) at 37°C and pH 7.4. By relying on the published articles, this review highlights the significance of the use of aqueous solutions containing 0.8-1.5 mMMg(2+), 22-27mM HCO3(-), 142-145mM Na(+), 5-5.8mM K(+), 103-133mM Cl(-), 1.8-3.75mM Ca(2+), and 0.8-1.67mM HPO4(2-), which essentially mimic the composition and the overall ionic strength of the human extracellular fluid (ECF), in forming the nanospheres of X-ray-amorphous CaP.
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Affiliation(s)
- A Cuneyt Tas
- Department of Materials Science and Engineering, University of Illinois, Urbana, IL 61801, USA.
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35
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Tas AC. Grade-1 titanium soaked in a DMEM solution at 37°C. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2014; 36:84-94. [DOI: 10.1016/j.msec.2013.11.045] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/12/2013] [Revised: 10/27/2013] [Accepted: 11/28/2013] [Indexed: 10/25/2022]
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36
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Allo BA, Lin S, Mequanint K, Rizkalla AS. Role of bioactive 3D hybrid fibrous scaffolds on mechanical behavior and spatiotemporal osteoblast gene expression. ACS APPLIED MATERIALS & INTERFACES 2013; 5:7574-7583. [PMID: 23826710 DOI: 10.1021/am401861w] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Three-dimensional (3D) bioactive organic-inorganic (O/I) hybrid fibrous scaffolds are attractive extracellular matrix (ECM) surrogates for bone tissue engineering. With the aim of regulating osteoblast gene expression in 3D, a new class of hybrid fibrous scaffolds with two distinct fiber diameters (260 and 600 nm) and excellent physico-mechanical properties were fabricated from tertiary (SiO2-CaO-P2O5) bioactive glass (BG) and poly (ε-caprolactone) (PCL) by in situ sol-gel and electrospinning process. The PCL/BG hybrid fibrous scaffolds exhibited accelerated wetting properties, enhanced pore sizes and porosity, and superior mechanical properties that were dependent on fiber diameter. Contrary to control PCL fibrous scaffolds that were devoid of bonelike apatite particles, incubating PCL/BG hybrid fibrous scaffolds in simulated body fluid (SBF) revealed bonelike apatite deposition. Osteoblast cells cultured on PCL/BG hybrid fibrous scaffolds spread with multiple attachments and actively proliferated suggesting that the low temperature in situ sol-gel and electrospinning process did not have a detrimental effect. Targeted bone-associated gene expressions by rat calvarial osteoblasts seeded on these hybrid scaffolds demonstrated remarkable spatiotemporal gene activation. Transcriptional-level gene expressions for alkaline phosphatase (ALP), osteopontin (OPN), bone sialoprotein (BSP), and osteocalcin (OCN) were significantly higher on the hybrid fibrous scaffolds (p < 0.001) that were largely dependent on fiber diameter compared. Taken together, our results suggest that PCL/BG fibrous scaffolds may accelerate bone formation by providing a favorable microenvironment.
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Affiliation(s)
- Bedilu A Allo
- Department of Chemical and Biochemical Engineering, The University of Western Ontario, London, Ontario, Canada
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