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Pecorini G, Braccini S, Simoni S, Corti A, Parrini G, Puppi D. Additive Manufacturing of Wet-Spun Poly(3-hydroxybutyrate-co-3-hydroxyvalerate)-Based Scaffolds Loaded with Hydroxyapatite. Macromol Biosci 2024; 24:e2300538. [PMID: 38534197 DOI: 10.1002/mabi.202300538] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2023] [Revised: 03/20/2024] [Indexed: 03/28/2024]
Abstract
Tissue engineering represents an advanced therapeutic approach for the treatment of bone tissue defects. Polyhydroxyalkanoates are a promising class of natural polymers in this context thanks to their biocompatibility, processing versatility, and mechanical properties. The aim of this study is the development by computer-aided wet-spinning of novel poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV)-based composite scaffolds for bone engineering. In particular, PHBV scaffolds are loaded with hydroxyapatite (HA), an osteoinductive ceramic, in order to tailor their biological activity and mechanical properties. PHBV blending with poly(lactide-co-glycolide) (PLGA) is also explored to increase the processing properties of the polymeric mixture used for composite scaffold fabrication. Different HA percentages, up to 15% wt., can be loaded into the PHBV or PHBV/PLGA scaffolds without compromising their interconnected porous architecture, as well as the polymer morphological and thermal properties, as demonstrated by scanning electron microscopy, thermogravimetric analysis, and differential scanning calorimetry. In addition, HA loading results in increased scaffold compressive stiffness to levels comparable to those of trabecular bone tissue, as well as in higher in vitro MC3T3-E1 cell viability and production of mineralized extracellular matrix, in comparison to what observed for unloaded scaffolds. The observed mechanical and biological properties suggest the suitability of the developed scaffolds for bone engineering.
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Affiliation(s)
- Gianni Pecorini
- BIOLab Research Group, Department of Chemistry and Industrial Chemistry, University of Pisa, UdR INSTM Pisa, Via Moruzzi 13, Pisa, 56124, Italy
| | - Simona Braccini
- BIOLab Research Group, Department of Chemistry and Industrial Chemistry, University of Pisa, UdR INSTM Pisa, Via Moruzzi 13, Pisa, 56124, Italy
| | - Stefano Simoni
- BIOLab Research Group, Department of Chemistry and Industrial Chemistry, University of Pisa, UdR INSTM Pisa, Via Moruzzi 13, Pisa, 56124, Italy
| | - Andrea Corti
- BIOLab Research Group, Department of Chemistry and Industrial Chemistry, University of Pisa, UdR INSTM Pisa, Via Moruzzi 13, Pisa, 56124, Italy
| | | | - Dario Puppi
- BIOLab Research Group, Department of Chemistry and Industrial Chemistry, University of Pisa, UdR INSTM Pisa, Via Moruzzi 13, Pisa, 56124, Italy
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2
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Lima GMR, Mukherjee A, Picchioni F, Bose RK. Characterization of Biodegradable Polymers for Porous Structure: Further Steps toward Sustainable Plastics. Polymers (Basel) 2024; 16:1147. [PMID: 38675066 PMCID: PMC11054705 DOI: 10.3390/polym16081147] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2024] [Revised: 04/07/2024] [Accepted: 04/16/2024] [Indexed: 04/28/2024] Open
Abstract
Plastic pollution poses a significant environmental challenge, necessitating the investigation of bioplastics with reduced end-of-life impact. This study systematically characterizes four promising bioplastics-polybutylene adipate terephthalate (PBAT), polybutylene succinate (PBS), poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV), and polylactic acid (PLA). Through a comprehensive analysis of their chemical, thermal, and mechanical properties, we elucidate their structural intricacies, processing behaviors, and potential morphologies. Employing an environmentally friendly process utilizing supercritical carbon dioxide, we successfully produced porous materials with microcellular structures. PBAT, PBS, and PLA exhibit closed-cell morphologies, while PHBV presents open cells, reflecting their distinct overall properties. Notably, PBAT foam demonstrated an average porous area of 1030.86 μm2, PBS showed an average porous area of 673 μm2, PHBV displayed open pores with an average area of 116.6 μm2, and PLA exhibited an average porous area of 620 μm2. Despite the intricacies involved in correlating morphology with material properties, the observed variations in pore area sizes align with the findings from chemical, thermal, and mechanical characterization. This alignment enhances our understanding of the morphological characteristics of each sample. Therefore, here, we report an advancement and comprehensive research in bioplastics, offering deeper insights into their properties and potential morphologies with an easy sustainable foaming process. The alignment of the process with sustainability principles, coupled with the unique features of each polymer, positions them as environmentally conscious and versatile materials for a range of applications.
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Affiliation(s)
| | | | | | - Ranjita K. Bose
- Product Technology Department, University of Groningen, 9747 AG Groningen, The Netherlands; (G.M.R.L.); (A.M.); (F.P.)
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3
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Patel R, Gómez-Cerezo MN, Huang H, Grøndahl L, Lu M. Degradation behaviour of porous poly(hydroxybutyrate-co-hydroxyvalerate) (PHBV) scaffolds in cell culture. Int J Biol Macromol 2024; 257:128644. [PMID: 38065444 DOI: 10.1016/j.ijbiomac.2023.128644] [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: 07/21/2023] [Revised: 11/16/2023] [Accepted: 12/04/2023] [Indexed: 01/27/2024]
Abstract
Exploring the degradation behaviour of biomaterials in a complex in vitro physiological environment can assist in predicting their performance in vivo, yet this aspect remains largely unexplored. In this study, the in vitro degradation over 12 weeks of porous poly(hydroxybutyrate-co-hydroxyvalerate) (PHBV) bone scaffolds in human osteoblast (hOB) culture was investigated. The objective was to evaluate how the presence of cells influenced both the degradation behaviour and mechanical stability of these scaffolds. The molecular weight (Mw) of the scaffolds decreased with increasing incubation time and the Mw reduction rate (6.2 ± 0.4 kg mol-1 week-1) was similar to that observed when incubated in phosphate buffered saline (PBS) solution, implying that the scaffolds underwent hydrolytic degradation in hOB culture. The mass of the scaffolds increased by 0.8 ± 0.2 % in the first 4 weeks, attributed to cells attachment and extracellular matrix (ECM) deposition including biomineralisation. During the first 8 weeks, the nominal compressive modulus, E⁎, of the scaffolds remained constant. However, it increased significantly from Week 8 to 12, with increments of 55 % and 42 % in normal and lateral directions, respectively, attributed to the reinforcement effect of cells, ECM and minerals attached on the surface of the scaffold. This study has highlighted, that while the use of PBS in degradation studies is suitable for evaluating Mw changes it cannot predict changes in mechanical properties to PHBV scaffolds in the presence of cells and culture media. Furthermore, the PHBV scaffolds had mechanical stability in cell culture for 12 weeks validating their suitability for tissue engineering applications.
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Affiliation(s)
- Rushabh Patel
- School of Mechanical and Mining Engineering, The University of Queensland, St Lucia, QLD 4072, Australia
| | - Maria Natividad Gómez-Cerezo
- Departamento de Química en Ciencias Farmacéuticas, Facultad de Farmacia, Universidad Complutense de Madrid, Instituto de Investigación Sanitaria Hospital, 12 de Octubre i+12, Plaza Ramón y Cajal s/n, 28040 Madrid, Spain
| | - Han Huang
- School of Mechanical and Mining Engineering, The University of Queensland, St Lucia, QLD 4072, Australia
| | - Lisbeth Grøndahl
- School of Chemistry and Molecular Biosciences, The University of Queensland, St Lucia, QLD 4072, Australia
| | - Mingyuan Lu
- School of Mechanical and Mining Engineering, The University of Queensland, St Lucia, QLD 4072, Australia.
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4
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Ho CC, Chen YW, Wang K, Lin YH, Chen TC, Shie MY. Effect of mussel-inspired polydopamine on the reinforced properties of 3D printed β-tricalcium phosphate/polycaprolactone scaffolds for bone regeneration. J Mater Chem B 2022; 11:72-82. [PMID: 36373587 DOI: 10.1039/d2tb01995g] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Bioceramic/polymer scaffolds have been considered as potential grafts used for facilitating bone healing. Unfortunately, the poor interfacial interaction between polymer matrices and bioceramic fillers limited their use in practical medicine. Thus, a facile strategy for reinforcing the three-dimensional printed β-tricalcium phosphate/polycaprolactone scaffolds through employing polydopamine modified-ceramics as fillers. The effects of the dopamine precursor on the compressive strength, degradability, cell proliferation, osteogenic differentiation, and in vivo osteogenicity were measured. The results indicated that the concentration of dopamine could remarkably affect the thickness and density of the polydopamine layer on fillers, further varying the compressive strength (1.23-fold to 1.64-fold), degradability, and osteogenicity of the scaffolds. More importantly, the presence of polydopamine in the three-dimensional printed composite scaffolds not only facilitated the proliferation, alkaline phosphatase activity and mineralization of mesenchymal stem cells, but also stimulated the formation of neo-bone tissue in femur defects. Taking together, the proposed scaffolds might serve as a candidate for bone regeneration.
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Affiliation(s)
- Chia-Che Ho
- Department of Bioinformatics and Medical Engineering, Asia University, Taichung, Taiwan. .,High Performance Materials Institute for x-Dimensional Printing, Asia University, Taichung City, Taiwan
| | - Yi-Wen Chen
- Graduate Institute of Biomedical Sciences, China Medical University, Taichung, Taiwan.,x-Dimension Center for Medical Research and Translation, China Medical University Hospital, Taichung, Taiwan
| | - Kan Wang
- Georgia Tech Manufacturing Institute, Georgia Institute of Technology, Atlanta, GA, USA
| | - Yen-Hong Lin
- x-Dimension Center for Medical Research and Translation, China Medical University Hospital, Taichung, Taiwan
| | - Ta-Cheng Chen
- High Performance Materials Institute for x-Dimensional Printing, Asia University, Taichung City, Taiwan.,Department of Information Management, National Formosa University, Yunlin, Taiwan
| | - Ming-You Shie
- Department of Bioinformatics and Medical Engineering, Asia University, Taichung, Taiwan. .,x-Dimension Center for Medical Research and Translation, China Medical University Hospital, Taichung, Taiwan.,School of Dentistry, China Medical University, Taichung, Taiwan
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5
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Gómez-Cerezo MN, Patel R, Vaquette C, Grøndahl L, Lu M. In vitro evaluation of porous poly(hydroxybutyrate-co-hydroxyvalerate)/akermanite composite scaffolds manufactured using selective laser sintering. BIOMATERIALS ADVANCES 2022; 135:212748. [PMID: 35929220 DOI: 10.1016/j.bioadv.2022.212748] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/22/2021] [Revised: 02/22/2022] [Accepted: 03/04/2022] [Indexed: 10/18/2022]
Abstract
Incorporation of a bioactive mineral filler in a biodegradable polyester scaffold is a promising strategy for scaffold assisted bone tissue engineering (TE). The current study evaluates the in vitro behavior of poly(hydroxybutyrate-co-hydroxyvalerate) (PHBV)/Akermanite (AKM) composite scaffolds manufactured using selective laser sintering (SLS). Exposure of the mineral filler on the surface of the scaffold skeleton was evident from in vitro mineralization in PBS. PHBV scaffolds and solvent cast films served as control samples and all materials showed preferential adsorption of fibronectin compared to serum albumin as well as non-cytotoxic response in human osteoblasts (hOB) at 24 h. hOB culture for up to 21 days revealed that the metabolic activity in PHBV films and scaffolds was significantly higher than that of PHBV/AKM scaffolds within the first two weeks of incubation. Afterwards, the metabolic activity in PHBV/AKM scaffolds exceeded that of the control samples. Confocal imaging showed cell penetration into the porous scaffolds. Significantly higher ALP activity was observed in PHBV/AKM scaffolds at all time points in both basal and osteogenic media. Mineralization during cell culture was observed on all samples with PHBV/AKM scaffolds exhibiting distinctly different mineral morphology. This study has demonstrated that the bioactivity of PHBV SLS scaffolds can be enhanced by incorporating AKM, making this an attractive candidate for bone TE application.
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Affiliation(s)
| | - Rushabh Patel
- School of Mechanical and Mining Engineering, The University of Queensland, St Lucia, QLD 4072, Australia
| | - Cedryck Vaquette
- School of Dentistry, The University of Queensland, Herston, QLD 4006, Australia
| | - Lisbeth Grøndahl
- School of Chemistry and Molecular Biosciences, The University of Queensland, St Lucia, QLD 4072, Australia.
| | - Mingyuan Lu
- School of Dentistry, The University of Queensland, Herston, QLD 4006, Australia.
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6
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Dhania S, Bernela M, Rani R, Parsad M, Grewal S, Kumari S, Thakur R. Scaffolds the backbone of tissue engineering: Advancements in use of polyhydroxyalkanoates (PHA). Int J Biol Macromol 2022; 208:243-259. [PMID: 35278518 DOI: 10.1016/j.ijbiomac.2022.03.030] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2021] [Revised: 03/05/2022] [Accepted: 03/07/2022] [Indexed: 12/11/2022]
Abstract
Our body is built to heal from inside out naturally but wide-ranging medical conditions necessitate the need for artificial assistance, and therefore, something that can assist the body to heal wounds and damaged tissues quickly and efficiently is of utmost importance. Tissue engineering technology helps to regenerate new tissue to replace the diseased or injured one. The technology uses biodegradable porous three-dimensional scaffolds for mimicking the structure and functions of the natural extracellular matrix. The material and design of scaffolds are critical areas of biomaterial research. Biomaterial-based three-dimensional structures have been the most promising material to serve as scaffolds for seeding cells, both in vivo and in vitro. One such material is polyhydroxyalkanoates (PHAs) which are thermoplastic biopolyesters that are highly suitable for this purpose due to their enhanced biocompatibility, biodegradability, thermo-processability, diverse mechanical properties, non-toxicity and natural origin. Moreover, they have tremendous possibilities of customization through biological physical and chemical modification as well as blending with other materials. They are being used for several tissue engineering applications such as bone graft substitute, cardiovascular patches, stents, for nerve repair and in implantology as valves and sutures. The present review overviews usage of a multitude of PHA-based biomaterials for a wide range of tissue engineering applications, based on their properties suitable for the specific applications.
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Affiliation(s)
- Sunena Dhania
- Department of Bio & Nanotechnology, Guru Jambheshwar University of Science and Technology, Hisar 125001, Haryana, India
| | - Manju Bernela
- Department of Biotechnology, Guru Nanak Dev University, Amritsar 143005, Punjab, India
| | - Ruma Rani
- ICAR-National Research Centre on Equines, Hisar 125001, Haryana, India
| | - Minakshi Parsad
- Department of Animal Biotechnology, LUVAS, Hisar 125001, Haryana, India
| | - Sapna Grewal
- Department of Bio & Nanotechnology, Guru Jambheshwar University of Science and Technology, Hisar 125001, Haryana, India
| | - Santosh Kumari
- Department of Bio & Nanotechnology, Guru Jambheshwar University of Science and Technology, Hisar 125001, Haryana, India
| | - Rajesh Thakur
- Department of Bio & Nanotechnology, Guru Jambheshwar University of Science and Technology, Hisar 125001, Haryana, India.
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7
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Cesar MB, Poli H, Piazza RD, Marques RFC, Herculano RD, Grøndahl L. Dispersion of hydroxyapatite nanoparticles in natural rubber latex and poly lactic acid based matrices. J Appl Polym Sci 2022. [DOI: 10.1002/app.52165] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Mariana Biondi Cesar
- Bioprocess and Biotechnology Engineering Department, School of Pharmaceutical Sciences São Paulo State University (UNESP) São Paulo Brazil
- School of Chemistry and Molecular Biosciences University of Queensland St. Lucia Queensland Australia
| | - Hamish Poli
- School of Chemistry and Molecular Biosciences University of Queensland St. Lucia Queensland Australia
| | - Rodolfo Debone Piazza
- Laboratory of Magnetic Materials and Colloids, Department of Physical Chemistry Institute of Chemistry, São Paulo State University, (UNESP) São Paulo Brazil
| | - Rodrigo Fernando Costa Marques
- Laboratory of Magnetic Materials and Colloids, Department of Physical Chemistry Institute of Chemistry, São Paulo State University, (UNESP) São Paulo Brazil
| | - Rondinelli Donizetti Herculano
- Bioprocess and Biotechnology Engineering Department, School of Pharmaceutical Sciences São Paulo State University (UNESP) São Paulo Brazil
| | - Lisbeth Grøndahl
- School of Chemistry and Molecular Biosciences University of Queensland St. Lucia Queensland Australia
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8
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Pryadko A, Surmeneva MA, Surmenev RA. Review of Hybrid Materials Based on Polyhydroxyalkanoates for Tissue Engineering Applications. Polymers (Basel) 2021; 13:1738. [PMID: 34073335 PMCID: PMC8199458 DOI: 10.3390/polym13111738] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2021] [Revised: 05/18/2021] [Accepted: 05/20/2021] [Indexed: 12/26/2022] Open
Abstract
This review is focused on hybrid polyhydroxyalkanoate-based (PHA) biomaterials with improved physico-mechanical, chemical, and piezoelectric properties and controlled biodegradation rate for applications in bone, cartilage, nerve and skin tissue engineering. PHAs are polyesters produced by a wide range of bacteria under unbalanced growth conditions. They are biodegradable, biocompatible, and piezoelectric polymers, which make them very attractive biomaterials for various biomedical applications. As naturally derived materials, PHAs have been used for multiple cell and tissue engineering applications; however, their widespread biomedical applications are limited due to their lack of toughness, elasticity, hydrophilicity and bioactivity. The chemical structure of PHAs allows them to combine with other polymers or inorganic materials to form hybrid composites with improved structural and functional properties. Their type (films, fibers, and 3D printed scaffolds) and properties can be tailored with fabrication methods and materials used as fillers. Here, we are aiming to fill in a gap in literature, revealing an up-to-date overview of ongoing research strategies that make use of PHAs as versatile and prospective biomaterials. In this work, a systematic and detailed review of works investigating PHA-based hybrid materials with tailored properties and performance for use in tissue engineering applications is carried out. A literature survey revealed that PHA-based composites have better performance for use in tissue regeneration applications than pure PHA.
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Affiliation(s)
| | | | - Roman A. Surmenev
- Physical Materials Science and Composite Materials Centre, Research School of Chemistry & Applied Biomedical Sciences, National Research Tomsk Polytechnic University, 30 Lenina Avenue, Tomsk 634050, Russia; (A.P.); (M.A.S.)
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Ansari S, Sami N, Yasin D, Ahmad N, Fatma T. Biomedical applications of environmental friendly poly-hydroxyalkanoates. Int J Biol Macromol 2021; 183:549-563. [PMID: 33932421 DOI: 10.1016/j.ijbiomac.2021.04.171] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2021] [Revised: 04/26/2021] [Accepted: 04/26/2021] [Indexed: 02/06/2023]
Abstract
Biological polyesters of hydroxyacids are known as polyhydroxyalkanoates (PHA). They have proved to be an alternative, environmentally friendly and attractive candidate for the replacement of petroleum-based plastics in many applications. Many bacteria synthesize these compounds as an intracellular carbon and energy compound usually under unbalanced growth conditions. Biodegradability and biocompatibility of different PHA has been studied in cell culture systems or in an animal host during the last few decades. Such investigations have proposed that PHA can be used as biomaterials for applications in conventional medical devices such as sutures, patches, meshes, implants, and tissue engineering scaffolds as well. Moreover, findings related to encapsulation capability and degradation kinetics of some PHA polymers has paved their way for development of controlled drug delivery systems. The present review discusses about bio-plastics, their characteristics, examines the key findings and recent advances highlighting the usage of bio-plastics in different medical devices. The patents concerning to PHA application in biomedical field have been also enlisted that will provide a brief overview of the status of research in bio-plastic. This would help medical researchers and practitioners to replace the synthetic plastics aids that are currently being used. Simultaneously, it could also prove to be a strong step in reducing the plastic pollution that surged abruptly due to the COVID-19 medical waste.
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Affiliation(s)
- Sabbir Ansari
- Cyanobacterial Biotechnology Laboratory, Department of Biosciences, Jamia Millia Islamia (Central University), New Delhi 110025, India
| | - Neha Sami
- Cyanobacterial Biotechnology Laboratory, Department of Biosciences, Jamia Millia Islamia (Central University), New Delhi 110025, India
| | - Durdana Yasin
- Cyanobacterial Biotechnology Laboratory, Department of Biosciences, Jamia Millia Islamia (Central University), New Delhi 110025, India
| | - Nazia Ahmad
- Cyanobacterial Biotechnology Laboratory, Department of Biosciences, Jamia Millia Islamia (Central University), New Delhi 110025, India
| | - Tasneem Fatma
- Cyanobacterial Biotechnology Laboratory, Department of Biosciences, Jamia Millia Islamia (Central University), New Delhi 110025, India.
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Choi J, Kang J, Yun SI. Nanofibrous Foams of Poly(3-hydroxybutyrate)/Cellulose Nanocrystal Composite Fabricated Using Nonsolvent-Induced Phase Separation. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2021; 37:1173-1182. [PMID: 33435675 DOI: 10.1021/acs.langmuir.0c03061] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
In this study, we fabricated nanofibrous foams of neat poly(3-hydroxybutyrate) (PHB) and PHB/cellulose nanocrystal (CNC) nanocomposite using nonsolvent-induced phase separation (NIPS) followed by solvent extraction. Two different nonsolvents, tetrahydrofuran (THF) and 1,4-dioxane (Diox), in combination with the solvent, chloroform (CF), were used for NIPS. The parameters of NIPS-derived crystallization kinetics were calculated using Avrami analysis of time-dependent infrared spectral measurements. The lower viscosity and poorer PHB affinity of THF than those of Diox resulted in rapid crystallization and gelation rate, which in turn resulted in higher strength of the foam. The mechanical reinforcement by the incorporation of CNCs was achieved for the composite foam prepared in Diox/CF but not in THF/CF, owing to the relatively better dispersion of the CNCs in Diox than that in THF. A rapid rate of NIPS-derived crystallization and gelation was achieved in THF/CF with the incorporation of CNCs, indicating the effective crystal nucleation of CNCs. However, the presence of CNCs deaccelerated the crystallization in Diox/CF, indicating that the inhibition effect of PHB mobility became more dominant than the nucleation effect of CNCs; this was because the CNC dispersion became more homogeneous in Diox/CF. In vitro cell viability assays exhibited excellent cytocompatibility of the foams, thereby showing potential for use in biomedical applications.
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Affiliation(s)
- Jiwon Choi
- Department of Chemical Engineering and Materials Science, Sangmyung University, Seoul 03016, Republic of Korea
| | - Jiseon Kang
- Department of Chemical Engineering and Materials Science, Sangmyung University, Seoul 03016, Republic of Korea
| | - Seok Il Yun
- Department of Chemical Engineering and Materials Science, Sangmyung University, Seoul 03016, Republic of Korea
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Kovylin RS, Aleynik DY, Fedushkin IL. Modern Porous Polymer Implants: Synthesis, Properties, and Application. POLYMER SCIENCE SERIES C 2021. [DOI: 10.1134/s1811238221010033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Abstract
The needs of modern surgery triggered the intensive development of transplantology, medical materials science, and tissue engineering. These directions require the use of innovative materials, among which porous polymers occupy one of the leading positions. The use of natural and synthetic polymers makes it possible to adjust the structure and combination of properties of a material to its particular application. This review generalizes and systematizes the results of recent studies describing requirements imposed on the structure and properties of synthetic (or artificial) porous polymer materials and implants on their basis and the advantages and limitations of synthesis methods. The most extensively employed, promising initial materials are considered, and the possible areas of application of polymer implants based on these materials are highlighted.
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12
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Choi SY, Cho IJ, Lee Y, Kim YJ, Kim KJ, Lee SY. Microbial Polyhydroxyalkanoates and Nonnatural Polyesters. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2020; 32:e1907138. [PMID: 32249983 DOI: 10.1002/adma.201907138] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2019] [Revised: 01/20/2020] [Indexed: 06/11/2023]
Abstract
Microorganisms produce diverse polymers for various purposes such as storing genetic information, energy, and reducing power, and serving as structural materials and scaffolds. Among these polymers, polyhydroxyalkanoates (PHAs) are microbial polyesters synthesized and accumulated intracellularly as a storage material of carbon, energy, and reducing power under unfavorable growth conditions in the presence of excess carbon source. PHAs have attracted considerable attention for their wide range of applications in industrial and medical fields. Since the first discovery of PHA accumulating bacteria about 100 years ago, remarkable advances have been made in the understanding of PHA biosynthesis and metabolic engineering of microorganisms toward developing efficient PHA producers. Recently, nonnatural polyesters have also been synthesized by metabolically engineered microorganisms, which opened a new avenue toward sustainable production of more diverse plastics. Herein, the current state of PHAs and nonnatural polyesters is reviewed, covering mechanisms of microbial polyester biosynthesis, metabolic pathways, and enzymes involved in biosynthesis of short-chain-length PHAs, medium-chain-length PHAs, and nonnatural polyesters, especially 2-hydroxyacid-containing polyesters, metabolic engineering strategies to produce novel polymers and enhance production capabilities and fermentation, and downstream processing strategies for cost-effective production of these microbial polyesters. In addition, the applications of PHAs and prospects are discussed.
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Affiliation(s)
- So Young Choi
- Metabolic and Biomolecular Engineering National Research Laboratory, Systems Metabolic Engineering and Systems Healthcare Cross-Generation Collaborative Laboratory, Department of Chemical and Biomolecular Engineering (BK21 Plus Program), Institute for the BioCentury, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, Republic of Korea
| | - In Jin Cho
- Metabolic and Biomolecular Engineering National Research Laboratory, Systems Metabolic Engineering and Systems Healthcare Cross-Generation Collaborative Laboratory, Department of Chemical and Biomolecular Engineering (BK21 Plus Program), Institute for the BioCentury, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, Republic of Korea
| | - Youngjoon Lee
- Metabolic and Biomolecular Engineering National Research Laboratory, Systems Metabolic Engineering and Systems Healthcare Cross-Generation Collaborative Laboratory, Department of Chemical and Biomolecular Engineering (BK21 Plus Program), Institute for the BioCentury, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, Republic of Korea
| | - Yeo-Jin Kim
- School of Life Sciences (KNU Creative BioResearch Group), KNU Institute for Microorganisms, Kyungpook National University, 80 Daehak-ro, Buk-gu, Daegu, 41566, Republic of Korea
| | - Kyung-Jin Kim
- School of Life Sciences (KNU Creative BioResearch Group), KNU Institute for Microorganisms, Kyungpook National University, 80 Daehak-ro, Buk-gu, Daegu, 41566, Republic of Korea
| | - Sang Yup Lee
- Metabolic and Biomolecular Engineering National Research Laboratory, Systems Metabolic Engineering and Systems Healthcare Cross-Generation Collaborative Laboratory, Department of Chemical and Biomolecular Engineering (BK21 Plus Program), Institute for the BioCentury, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, Republic of Korea
- BioProcess Engineering Research Center and Bioinformatics Research Center, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, Republic of Korea
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13
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Porous Poly(3-hydroxybutyrate) Scaffolds Prepared by Non-Solvent-Induced Phase Separation for Tissue Engineering. Macromol Res 2020; 28:835-843. [PMID: 32837462 PMCID: PMC7265872 DOI: 10.1007/s13233-020-8109-x] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2019] [Revised: 04/07/2020] [Accepted: 04/08/2020] [Indexed: 11/06/2022]
Abstract
Highly porous poly(3-hydroxybutyrate) (PHB) scaffolds were fabricated using non-solvent-induced phase separation with chloroform as the solvent and tetrahydrofuran as the non-solvent. The microporosity, nanofiber morphology, and mechanical strength of the scaffolds were adjusted by varying the fabrication parameters, such as the polymer concentration and solvent composition. The influence of these parameters on the structure and morphology of PHB organogels and scaffolds was elucidated using small-angle neutron scattering and scanning electron microscopy. The organogels and scaffolds in this study have a complex hierarchical structure, extending over a wide range of length scales. In vitro viability assays were performed using the human keratinocyte cell line (HaCaT), and all PHB scaffolds demonstrated the excellent cell viability. Microporosity had the greatest impact on HaCaT cell proliferation on PHB scaffolds, which was determined after a 3-day incubation period with scaffolds of different morphologies and mechanical properties. The superior cell viability and the controlled scaffold properties and morphologies suggested PHB scaffolds fabricated by non-solvent-induced phase separation using chloroform and tetrahydrofuran as promising biomaterials for the applications of tissue engineering, particularly of epidermal engineering.
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14
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Amaro L, Correia DM, Martins PM, Botelho G, Carabineiro SAC, Ribeiro C, Lanceros-Mendez S. Morphology Dependence Degradation of Electro- and Magnetoactive Poly(3-hydroxybutyrate-co-hydroxyvalerate) for Tissue Engineering Applications. Polymers (Basel) 2020; 12:E953. [PMID: 32325963 PMCID: PMC7240521 DOI: 10.3390/polym12040953] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2020] [Revised: 04/09/2020] [Accepted: 04/16/2020] [Indexed: 12/31/2022] Open
Abstract
Poly(hydroxybutyrate-co-hydroxyvalerate) (PHBV) is a piezoelectric biodegradable and biocompatible polymer suitable for tissue engineering applications. The incorporation of magnetostrictive cobalt ferrites (CFO) into PHBV matrix enables the production of magnetically responsive composites, which proved to be effective in the differentiation of a variety of cells and tissues. In this work, PHBV and PHBV with CFO nanoparticles were produced in the form of films, fibers and porous scaffolds and subjected to an experimental program allowing to evaluate the degradation process under biological conditions for a period up to 8 weeks. The morphology, physical, chemical and thermal properties were evaluated, together with the weight loss of the samples during the in vitro degradation assays. No major changes in the mentioned properties were found, thus proving its applicability for tissue engineering applications. Degradation was apparent from week 4 and onwards, leading to the conclusion that the degradation ratio of the material is suitable for a large range of tissue engineering applications. Further, it was found that the degradation of the samples maintain the biocompatibility of the materials for the pristine polymer, but can lead to cytotoxic effects when the magnetic CFO nanoparticles are exposed, being therefore needed, for magnetoactive applications, to substitute them by biocompatible ferrites, such as an iron oxide (Fe3O4).
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Affiliation(s)
- Luis Amaro
- Center of Physics, Universidade do Minho, 4710-057 Braga, Portugal; (L.A.); (D.M.C.); (P.M.M.)
| | - Daniela M. Correia
- Center of Physics, Universidade do Minho, 4710-057 Braga, Portugal; (L.A.); (D.M.C.); (P.M.M.)
- Center of Chemistry, Universidade de Trás-os-Montes e Alto Douro, 5001-801 Vila Real, Portugal
| | - Pedro M. Martins
- Center of Physics, Universidade do Minho, 4710-057 Braga, Portugal; (L.A.); (D.M.C.); (P.M.M.)
| | - Gabriela Botelho
- Department of Chemistry, Universidade do Minho, 4710-057 Braga, Portugal;
| | - Sónia A. C. Carabineiro
- LAQV-REQUIMTE, Department of Chemistry, NOVA School of Science and Technology, Universidade NOVA de Lisboa, 2829-516 Caparica, Portugal;
| | - Clarisse Ribeiro
- Center of Physics, Universidade do Minho, 4710-057 Braga, Portugal; (L.A.); (D.M.C.); (P.M.M.)
- CEB—Centre of Biological Engineering, University of Minho, 4710-057 Braga, Portugal
| | - Senentxu Lanceros-Mendez
- BCMaterials, Basque Center for Materials, Applications and Nanostructures, UPV/EHU Science Park, 48940 Leioa, Spain;
- IKERBASQUE, Basque Foundation for Science, 48013 Bilbao, Spain
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Tarrahi R, Fathi Z, Seydibeyoğlu MÖ, Doustkhah E, Khataee A. Polyhydroxyalkanoates (PHA): From production to nanoarchitecture. Int J Biol Macromol 2020; 146:596-619. [DOI: 10.1016/j.ijbiomac.2019.12.181] [Citation(s) in RCA: 68] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2019] [Revised: 12/03/2019] [Accepted: 12/20/2019] [Indexed: 02/07/2023]
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16
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Nonmineralized and Mineralized Silk Fibroin/Gelatin Hybrid Scaffolds: Chacterization and Cytocompatibility In Vitro for Bone-Tissue Engineering. J Craniofac Surg 2019; 31:416-419. [PMID: 31764552 DOI: 10.1097/scs.0000000000006020] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
In this study, nonmineralized silk fibroin/gelatin (SF/G) hybrid scaffolds and the mineralized SF/G/hydroxyapatite (SF/G/HA) hybrid scaffolds were fabricated using vacuum freeze-drying method and biomineralization technique. The morphology and mechanical properties of the 2 hybrid scaffolds were characterized. Furthermore, the cytotoxic profiles of the hybrid scaffolds were investigated in vitro by seeding the human osteoblast cells (hFOB1.19). The 2 hybrid scaffolds were both highly porous and the pore sizes of the SF/G as well as SF/G/HA hybrid scaffolds were 260 ± 58 μm and 210 ± 35 μm, respectively. Compared with the SF/G hybrid scaffold, the SF/G/HA hybrid scaffolds exhibited significantly enhanced compressive strength and modulus. Significant early cell adhesion and proliferation on the SF/G hybrid scaffolds were observed, while SF/G/HA hybrid scaffolds effectively improved osteogenic differentiation of hFOB1.19 after 10 days of coculture. The results confirmed that the 2 hybrid scaffolds were both cytocompatible and had almost no negative effects on the hFOB1.19 in vitro. However, the SF/G/HA hybrid scaffolds tended to be more promising for application in bone-tissue engineering with good mechanical property and osteogenic differentiation.
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17
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Kouhi M, Jayarama Reddy V, Fathi M, Shamanian M, Valipouri A, Ramakrishna S. Poly (3-hydroxybutyrate-co-3-hydroxyvalerate)/fibrinogen/bredigite nanofibrous membranes and their integration with osteoblasts for guided bone regeneration. J Biomed Mater Res A 2019; 107:1154-1165. [PMID: 30636094 DOI: 10.1002/jbm.a.36607] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2018] [Revised: 11/30/2018] [Accepted: 01/09/2019] [Indexed: 01/25/2023]
Abstract
Guided bone regeneration (GBR) has been established to be an effective method for the repair of defective tissues, which is based on isolating bone defects with a barrier membrane for faster tissue reconstruction. The aim of the present study is to develop poly (hydroxybutyrate-co-3-hydroxyvalerate) (PHBV)/fibrinogen (FG)/bredigite (BR) membranes with applicability in GBR. BR nanoparticles were synthesized through a sol-gel method and characterized using transmission electron microscopy and X-ray diffractometer. PHBV, PHBV/FG, and PHBV/FG/BR membranes were fabricated using electrospinning and characterized by scanning electron microscopy, Fourier transform infrared spectroscopy, contact angle, pore size, thermogravimetric analysis and tensile strength. The electrospun PHBV, PHBV/FG, and PHBV/FG/BR nanofibers were successfully obtained with the mean diameter ranging 240-410 nm. The results showed that Young's modulus and ultimate strength of the PHBV membrane reduced upon blending with FG and increased by further incorporation of BR nanoparticles, Moreover hydrophilicity of the PHBV membrane improved on addition of FG and BR. The in vitro degradation assay demonstrated that incorporation of FG and BR into PHBV matrix increased its hydrolytic degradation. Cell-membrane interactions were studied by culturing human fetal osteoblast cells on the fabricated membrane. According to the obtained results, osteoblasts seeded on PHBV/FG/BR displayed higher cell adhesion and proliferation compared to PHBV and PHBV/FG membrane. Furthermore, alkaline phosphatase activity and alizarin red-s staining indicated enhanced osteogenic differentiation and mineralization of cells on PHBV/FG/BR membranes. The results demonstrated that developed electrospun PHBV/FG/BR nanofibrous mats have desired potential as a barrier membrane for guided bone tissue engineering. © 2018 Wiley Periodicals, Inc. J Biomed Mater Res Part A: 107A: 1154-1165, 2019.
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Affiliation(s)
- Monireh Kouhi
- Biomaterials Research Group, Department of Materials Engineering, Isfahan University of Technology, Isfahan, Iran.,Center for Nanofibers and Nanotechnology, Department of Mechanical Engineering, National University of Singapore, Singapore
| | - Venugopal Jayarama Reddy
- Center for Nanofibers and Nanotechnology, Department of Mechanical Engineering, National University of Singapore, Singapore.,Faculty of Industrial Sciences & Technology, Universiti Malaysia Pahang, Kuantan, Malaysia
| | - Mohammadhossein Fathi
- Biomaterials Research Group, Department of Materials Engineering, Isfahan University of Technology, Isfahan, Iran
| | - Morteza Shamanian
- Biomaterials Research Group, Department of Materials Engineering, Isfahan University of Technology, Isfahan, Iran
| | - Afsaneh Valipouri
- Department of Textile Engineering, Isfahan University of Technology, Isfahan, Iran
| | - Seeram Ramakrishna
- Center for Nanofibers and Nanotechnology, Department of Mechanical Engineering, National University of Singapore, Singapore
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18
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Xu T, He X, Chen Z, He L, Lu M, Ge J, Weng J, Mu Y, Duan K. Effect of magnesium particle fraction on osteoinduction of hydroxyapatite sphere-based scaffolds. J Mater Chem B 2019; 7:5648-5660. [PMID: 31465084 DOI: 10.1039/c9tb01162e] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
HAs-30Mg (incorporation of 30% Mg into HA sphere-based scaffolds) induced the optimum new bone formation.
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Affiliation(s)
- Taotao Xu
- Key Lab of Advanced Technologies of Materials (MOE)
- School of Materials Science and Engineering
- Southwest Jiaotong University
- Chengdu
- China
| | - Xu He
- Key Lab of Advanced Technologies of Materials (MOE)
- School of Materials Science and Engineering
- Southwest Jiaotong University
- Chengdu
- China
| | - Zhenghui Chen
- Department of Stomatology
- Sichuan Academy of Medical Sciences and Sichuan Provincial People's Hospital
- Chengdu
- China
| | - Lei He
- Key Lab of Advanced Technologies of Materials (MOE)
- School of Materials Science and Engineering
- Southwest Jiaotong University
- Chengdu
- China
| | - Mengjie Lu
- Sichuan Provincial Lab of Orthopaedic Engineering
- Department of Bone and Joint Surgery
- Affiliated Hospital of Southwest Medical University
- Luzhou
- China
| | - Jianhua Ge
- Sichuan Provincial Lab of Orthopaedic Engineering
- Department of Bone and Joint Surgery
- Affiliated Hospital of Southwest Medical University
- Luzhou
- China
| | - Jie Weng
- Key Lab of Advanced Technologies of Materials (MOE)
- School of Materials Science and Engineering
- Southwest Jiaotong University
- Chengdu
- China
| | - Yandong Mu
- Department of Stomatology
- Sichuan Academy of Medical Sciences and Sichuan Provincial People's Hospital
- Chengdu
- China
| | - Ke Duan
- Sichuan Provincial Lab of Orthopaedic Engineering
- Department of Bone and Joint Surgery
- Affiliated Hospital of Southwest Medical University
- Luzhou
- China
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19
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Diermann SH, Lu M, Edwards G, Dargusch M, Huang H. In vitro degradation of a unique porous PHBV scaffold manufactured using selective laser sintering. J Biomed Mater Res A 2018; 107:154-162. [PMID: 30358091 DOI: 10.1002/jbm.a.36543] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2018] [Revised: 08/10/2018] [Accepted: 09/05/2018] [Indexed: 12/20/2022]
Abstract
Biodegradable poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) scaffolds have shown great promise for bone tissue engineering applications. The investigation of their hydrolytic degradation is thus essential to understand the effect of hydrolysis on the complex biodegradation behavior of PHBV scaffolds. In this study, we investigated the degradation behavior of high molecular weight PHBV scaffolds manufactured using selective laser sintering (SLS) without using predesigned porous architectures. The manufactured scaffolds have high specific surface areas with great water-uptake abilities. After an incubation of 6 weeks in phosphate-buffered saline solution, the structural integrity of the scaffolds was unaffected. However, a significant decrease in molecular weight ranging from 39% to 46% was found. The measured weight loss was negligible, but their compressive modulus and strength both decreased, likely due to water plasticization. These findings suggest that hydrolytic degradation of PHBV by means of bulk degradation was the predominant mechanism, attributed to their excellent water absorptivity. Overall, the PHBV scaffolds manufactured using SLS exhibited adequate mechanical properties and satisfactory structural integrity after incubation. As a result, the scaffolds have great potential as candidates for bone repair in clinical practice. © 2018 Wiley Periodicals, Inc. J Biomed Mater Res Part A: 107A: 154-162, 2019.
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Affiliation(s)
- Sven H Diermann
- School of Mechanical and Mining Engineering, The University of Queensland, Queensland, 4072, Australia
| | - Mingyuan Lu
- School of Mechanical and Mining Engineering, The University of Queensland, Queensland, 4072, Australia
| | - Grant Edwards
- Australian Institute for Bioengineering and Nanotechnology (AIBN), The University of Queensland, Queensland, 4072, Australia
| | - Matthew Dargusch
- School of Mechanical and Mining Engineering, The University of Queensland, Queensland, 4072, Australia
| | - Han Huang
- School of Mechanical and Mining Engineering, The University of Queensland, Queensland, 4072, Australia
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20
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Ye X, Li L, Lin Z, Yang W, Duan M, Chen L, Xia Y, Chen Z, Lu Y, Zhang Y. Integrating 3D-printed PHBV/Calcium sulfate hemihydrate scaffold and chitosan hydrogel for enhanced osteogenic property. Carbohydr Polym 2018; 202:106-114. [PMID: 30286981 DOI: 10.1016/j.carbpol.2018.08.117] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2018] [Revised: 08/18/2018] [Accepted: 08/27/2018] [Indexed: 12/20/2022]
Abstract
We developed the 3D-printed poly(3-hydroxybutyrate-co-3-hydroxyvalerate)/calcium sulfate hemihydrate (PHBV/CaSH) scaffolds by using fused deposition modelling (FDM) technique and then coated the scaffolds with chitosan (CS) acetic acid solution. After drying and neutralization, CS hydrogel was formed on the surface of the scaffolds. The resultant PHBV/CaSH/CS scaffolds could promote the adhesion and proliferation of rat bone marrow stromal cells (rBMSCs) and enhance the osteogenesis of rBMSCs by up-regulating the expression level of osteogenic genes compared to the PHBV and PHBV/CaSH scaffolds. In vivo studies further demonstrated the PHBV/CaSH/CS scaffolds could effectively promote new bone formation. Therefore, integrating 3D-printed PHBV/CaSH scaffold and CS hrydogel represents a novel strategy to promote osteogensis property, showing full potential for bone defects repair.
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Affiliation(s)
- Xiangling Ye
- Department of Trauma Orthopedics, Hospital of Orthopedics, Guangzhou General Hospital of Guangzhou Military Command of PLA, Guangzhou, Guangdong, 510010, PR China; People's Hospital of Kaihua, Quzhou, Zhejiang, 324300, PR China; Guangdong Key Lab of Orthopedic Technology and Implant materials, Key Laboratory of Trauma & Tissue Repair of Tropical Area of PLA, General Hospital of Guangzhou Military Command of PLA, Guangzhou, Guangdong, 510010, PR China
| | - Lihua Li
- Guangdong Key Lab of Orthopedic Technology and Implant materials, Key Laboratory of Trauma & Tissue Repair of Tropical Area of PLA, General Hospital of Guangzhou Military Command of PLA, Guangzhou, Guangdong, 510010, PR China
| | - Zefeng Lin
- Guangdong Key Lab of Orthopedic Technology and Implant materials, Key Laboratory of Trauma & Tissue Repair of Tropical Area of PLA, General Hospital of Guangzhou Military Command of PLA, Guangzhou, Guangdong, 510010, PR China
| | - Weiliang Yang
- People's Hospital of Kaihua, Quzhou, Zhejiang, 324300, PR China
| | - Mingyang Duan
- Department of Trauma Orthopedics, Hospital of Orthopedics, Guangzhou General Hospital of Guangzhou Military Command of PLA, Guangzhou, Guangdong, 510010, PR China
| | - Lingling Chen
- Guangdong Key Lab of Orthopedic Technology and Implant materials, Key Laboratory of Trauma & Tissue Repair of Tropical Area of PLA, General Hospital of Guangzhou Military Command of PLA, Guangzhou, Guangdong, 510010, PR China
| | - Yuanjun Xia
- Department of Trauma Orthopedics, Hospital of Orthopedics, Guangzhou General Hospital of Guangzhou Military Command of PLA, Guangzhou, Guangdong, 510010, PR China
| | - Zepeng Chen
- Department of Trauma Orthopedics, Hospital of Orthopedics, Guangzhou General Hospital of Guangzhou Military Command of PLA, Guangzhou, Guangdong, 510010, PR China
| | - Yao Lu
- Guangdong Key Lab of Orthopedic Technology and Implant materials, Key Laboratory of Trauma & Tissue Repair of Tropical Area of PLA, General Hospital of Guangzhou Military Command of PLA, Guangzhou, Guangdong, 510010, PR China; Department of Orthopedics, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong, 510282, PR China.
| | - Ying Zhang
- Department of Trauma Orthopedics, Hospital of Orthopedics, Guangzhou General Hospital of Guangzhou Military Command of PLA, Guangzhou, Guangdong, 510010, PR China.
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21
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Diermann SH, Lu M, Zhao Y, Vandi LJ, Dargusch M, Huang H. Synthesis, microstructure, and mechanical behaviour of a unique porous PHBV scaffold manufactured using selective laser sintering. J Mech Behav Biomed Mater 2018; 84:151-160. [DOI: 10.1016/j.jmbbm.2018.05.007] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2018] [Revised: 04/21/2018] [Accepted: 05/02/2018] [Indexed: 01/10/2023]
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22
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Kouhi M, Fathi M, Prabhakaran MP, Shamanian M, Ramakrishna S. Enhanced proliferation and mineralization of human fetal osteoblast cells on PHBV-bredigite nanofibrous scaffolds. ACTA ACUST UNITED AC 2018. [DOI: 10.1016/j.matpr.2018.04.181] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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23
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Additive Manufacturing of Poly(3-hydroxybutyrate-co-3-hydroxyhexanoate)/poly(ε-caprolactone) Blend Scaffolds for Tissue Engineering. Bioengineering (Basel) 2017; 4:bioengineering4020049. [PMID: 28952527 PMCID: PMC5590465 DOI: 10.3390/bioengineering4020049] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2017] [Revised: 05/19/2017] [Accepted: 05/21/2017] [Indexed: 12/01/2022] Open
Abstract
Additive manufacturing of scaffolds made of a polyhydroxyalkanoate blended with another biocompatible polymer represents a cost-effective strategy for combining the advantages of the two blend components in order to develop tailored tissue engineering approaches. The aim of this study was the development of novel poly(3-hydroxybutyrate-co-3-hydroxyhexanoate)/ poly(ε-caprolactone) (PHBHHx/PCL) blend scaffolds for tissue engineering by means of computer-aided wet-spinning, a hybrid additive manufacturing technique suitable for processing polyhydroxyalkanoates dissolved in organic solvents. The experimental conditions for processing tetrahydrofuran solutions containing the two polymers at different concentrations (PHBHHx/PCL weight ratio of 3:1, 2:1 or 1:1) were optimized in order to manufacture scaffolds with predefined geometry and internal porous architecture. PHBHHx/PCL scaffolds with a 3D interconnected network of macropores and a local microporosity of the polymeric matrix, as a consequence of the phase inversion process governing material solidification, were successfully fabricated. As shown by scanning electron microscopy, thermogravimetric, differential scanning calorimetric and uniaxial compressive analyses, blend composition significantly influenced the scaffold morphological, thermal and mechanical properties. In vitro biological characterization showed that the developed scaffolds were able to sustain the adhesion and proliferation of MC3T3-E1 murine preosteoblast cells. The additive manufacturing approach developed in this study, based on a polymeric solution processing method avoiding possible material degradation related to thermal treatments, could represent a powerful tool for the development of customized PHBHHx-based blend scaffolds for tissue engineering.
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24
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Shuai C, Guo W, Gao C, Yang Y, Xu Y, Liu L, Qin T, Sun H, Yang S, Feng P, Wu P. Calcium Silicate Improved Bioactivity and Mechanical Properties of Poly(3-hydroxybutyrate-co-3-hydroxyvalerate) Scaffolds. Polymers (Basel) 2017; 9:E175. [PMID: 30970854 PMCID: PMC6432408 DOI: 10.3390/polym9050175] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2017] [Revised: 05/12/2017] [Accepted: 05/12/2017] [Indexed: 12/02/2022] Open
Abstract
The poor bioactivity and mechanical properties have restricted its biomedical application, although poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) had good biocompatibility and biodegradability. In this study, calcium silicate (CS) was incorporated into PHBV for improving its bioactivity and mechanical properties, and the porous PHBV/CS composite scaffolds were fabricated via selective laser sintering (SLS). Simulated body fluid (SBF) immersion tests indicated the composite scaffolds had good apatite-forming ability, which could be mainly attributed to the electrostatic attraction of negatively charged silanol groups derived from CS degradation to positively charged calcium ions in SBF. Moreover, the compressive properties of the composite scaffolds increased at first, and then decreased with increasing the CS content, which was ascribed to the fact that CS of a proper content could homogeneously disperse in PHBV matrix, while excessive CS would form continuous phase. The compressive strength and modulus of composite scaffolds with optimal CS content of 10 wt % were 3.55 MPa and 36.54 MPa, respectively, which were increased by 41.43% and 28.61%, respectively, as compared with PHBV scaffolds. Additionally, 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay indicated MG63 cells had a higher proliferation rate on PHBV/CS composite scaffolds than that on PHBV. Alkaline phosphatase (ALP) staining assay demonstrated the incorporation of CS significantly promoted osteogenic differentiation of MG63 cells on the scaffolds. These results suggest that the PHBV/CS composite scaffolds have the potential in serving as a substitute in bone tissue engineering.
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Affiliation(s)
- Cijun Shuai
- State Key Laboratory of High Performance Complex Manufacturing, Central South University, Changsha 410083, China.
- Key Laboratory of Organ Injury, Aging and Regenerative Medicine of Hunan Province, Changsha 410008, China.
| | - Wang Guo
- State Key Laboratory of High Performance Complex Manufacturing, Central South University, Changsha 410083, China.
| | - Chengde Gao
- State Key Laboratory of High Performance Complex Manufacturing, Central South University, Changsha 410083, China.
| | - Youwen Yang
- State Key Laboratory of High Performance Complex Manufacturing, Central South University, Changsha 410083, China.
| | - Yong Xu
- State Key Laboratory of High Performance Complex Manufacturing, Central South University, Changsha 410083, China.
| | - Long Liu
- State Key Laboratory of High Performance Complex Manufacturing, Central South University, Changsha 410083, China.
| | - Tian Qin
- State Key Laboratory of High Performance Complex Manufacturing, Central South University, Changsha 410083, China.
| | - Hang Sun
- State Key Laboratory of High Performance Complex Manufacturing, Central South University, Changsha 410083, China.
| | - Sheng Yang
- Human Reproduction Center, Shenzhen Hospital of Hongkong University, Shenzhen 518000, China.
| | - Pei Feng
- State Key Laboratory of High Performance Complex Manufacturing, Central South University, Changsha 410083, China.
| | - Ping Wu
- College of Chemistry, Xiangtan University, Xiangtan 411105, China.
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25
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Mohseni M, Jahandideh A, Abedi G, Akbarzadeh A, Hesaraki S. Assessment of tricalcium phosphate/collagen (TCP/collagene)nanocomposite scaffold compared with hydroxyapatite (HA) on healing of segmental femur bone defect in rabbits. ARTIFICIAL CELLS NANOMEDICINE AND BIOTECHNOLOGY 2017; 46:242-249. [PMID: 28503937 DOI: 10.1080/21691401.2017.1324463] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Bone regeneration is an important objective in clinical practice and has been used for different applications. The aim of this study was to evaluate the effectiveness of nanocomposite tricalcium phosphate (TCP)/collagen scaffolds combined with hydroxyapatite scaffold for bone healing in surgery of femoral defects in rabbits. In this study, 45 mature male New Zealand white rabbits between 6 and 8 months old and weighting between 3 and 3.5 kg were examined. Rabbits were divided into three groups. Surgical procedures were performed after intramuscular injection of Ketamine 10% (ketamine hydrochloride, 50 mg/kg) and Rompun 5% (xylazine, 5 mg/kg). Then an approximately 6 mm diameter-5 mm cylinder bone defect was created in the femur of one of the hind limbs. After inducing the surgical wound, all rabbits were coloured and randomly divided into three experimental groups of 15 animals each. Group 1 received pure medical nanocomposite TCP/collagen granules, group 2 received hydroxyapatite, and third group was a control group which received no treatment. Histopathological evaluation was performed on days 15, 30, and 45 after surgery. On days 15, 30, and 45 after surgery, the quantity and the velocity of stages of bone formation at the healing site in nanocomposite TCP/collagen group were better than HA and control groups and the quantity of newly formed lamellar bone at the healing site in nanocomposite TCP/collagen group were better than onward compared with HA and control groups. In conclusion, it seems that TCP/collagen nanocomposite has a significant role in the reconstruction of bone defects and can be used as scaffold in bone fractures.
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Affiliation(s)
- Mahmoud Mohseni
- a Department of Veterinary Surgery, Science and Research Branch , Islamic Azad University , Tehran , Iran
| | - Alireza Jahandideh
- a Department of Veterinary Surgery, Science and Research Branch , Islamic Azad University , Tehran , Iran
| | - Gholamreza Abedi
- a Department of Veterinary Surgery, Science and Research Branch , Islamic Azad University , Tehran , Iran
| | - Abolfazl Akbarzadeh
- b Drug Applied Research Center , Tabriz University of Medical Sciences , Tabriz , Iran.,c Universal Scientific Education and Research Network (USERN) , Tabriz , Iran
| | - Saeed Hesaraki
- d Department of Pathobiology, Faculty of Specialized Veterinary Sciences , Science and Research Branch, Islamic Azad University , Tehran , Iran
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26
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Giretova M, Medvecky L, Stulajterova R, Sopcak T, Briancin J, Tatarkova M. Effect of enzymatic degradation of chitosan in polyhydroxybutyrate/chitosan/calcium phosphate composites on in vitro osteoblast response. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2016; 27:181. [PMID: 27770394 DOI: 10.1007/s10856-016-5801-7] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/09/2016] [Accepted: 10/14/2016] [Indexed: 06/06/2023]
Abstract
Polyhydroxybutyrate/chitosan/calcium phosphate composites are interesting biomaterials for utilization in regenerative medicine and they may by applied in reconstruction of deeper subchondral defects. Insufficient informations were found in recent papers about the influence of lysozyme degradation of chitosan in calcium phosphate/chitosan based composites on in vitro cytotoxicity and proliferation activity of osteoblasts. The effect of enzymatic chitosan degradation on osteoblasts proliferation was studied on composite films in which the porosity of origin 3D scaffolds was eliminated and the surface texture was modified. The significantly enhanced proliferation activity with faster population growth of osteoblasts were found on enzymatically degraded biopolymer composite films with α-tricalcium phosphate and nanohydroxyapatite. No cytotoxicity of composite films prepared from lysozyme degraded scaffolds containing a large fraction of low molecular weight chitosans (LMWC), was revealed after 10 days of cultivation. Contrary to above in the higher cytotoxicity origin untreated nanohydroxyapatite films and porous composite scaffolds. The results showed that the synergistic effect of surface distribution, morphology of nanohydroxyapatite particles, microtopography and the presence of LMWC due to chitosan degradation in composite films were responsible for compensation of the cytotoxicity of nanohydroxyapatite composite films or porous composite scaffolds.
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Affiliation(s)
- Maria Giretova
- Institute of Materials Research of SAS, Watsonova 47, 04001, Kosice, Slovakia.
| | - Lubomir Medvecky
- Institute of Materials Research of SAS, Watsonova 47, 04001, Kosice, Slovakia
| | | | - Tibor Sopcak
- Institute of Materials Research of SAS, Watsonova 47, 04001, Kosice, Slovakia
| | - Jaroslav Briancin
- Institute of Geotechnics of SAS, Watsonova 47, 04001, Kosice, Slovakia
| | - Monika Tatarkova
- Institute of Materials Research of SAS, Watsonova 47, 04001, Kosice, Slovakia
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27
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Kang J, Gi H, Choe R, Yun SI. Fabrication and characterization of poly(3-hydroxybutyrate) gels using non-solvent-induced phase separation. POLYMER 2016. [DOI: 10.1016/j.polymer.2016.09.093] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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28
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Ansari NF, Annuar MSM, Murphy BP. A porous medium-chain-length poly(3-hydroxyalkanoates)/hydroxyapatite composite as scaffold for bone tissue engineering. Eng Life Sci 2016; 17:420-429. [PMID: 32624787 DOI: 10.1002/elsc.201600084] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2016] [Revised: 07/01/2016] [Accepted: 09/19/2016] [Indexed: 11/09/2022] Open
Abstract
Polyhydroxyalkanoates (PHA) are hydrophobic biopolymers with huge potential for biomedical applications due to their biocompatibility, excellent mechanical properties and biodegradability. A porous composite scaffold made of medium-chain-length poly(3-hydroxyalkanoates) (mcl-PHA) and hydroxyapatite (HA) was fabricated using particulate leaching technique and NaCl as a porogen. Different percentages of HA loading was investigated that would support the growth of osteoblast cells. Ultrasonic irradiation was applied to facilitate the dispersion of HA particles into the mcl-PHA matrix. The different P(3HO-co-3HHX)/HA composites were investigated using field emission scanning electron microscopy (FESEM), X-ray diffraction (XRD) and energy dispersive X-ray analysis (EDXA). The scaffolds were found to be highly porous with interconnecting pore structures and the HA particles were homogeneously dispersed in the polymer matrix. The scaffolds biocompatibility and osteoconductivity were also assessed following the proliferation and differentiation of osteoblast cells on the scaffolds. From the results, it is clear that scaffolds made from P(3HO-co-3HHX)/HA composites are viable candidate materials for bone tissue engineering applications.
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Affiliation(s)
- Nor Faezah Ansari
- Institute of Biological Sciences Faculty of Science University of Malaya Kuala Lumpur Malaysia.,Department of Biotechnology Kuliyyah of Sciences International Islamic University of Malaysia Kuantan Pahang Malaysia
| | - M Suffian M Annuar
- Institute of Biological Sciences Faculty of Science University of Malaya Kuala Lumpur Malaysia.,Centre for Research in Biotechnology for Agriculture (CEBAR) University of Malaya Kuala Lumpur Malaysia
| | - Belinda Pingguan Murphy
- Department of Biomedical Engineering Faculty of Engineering University of Malaya Kuala Lumpur Malaysia
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29
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Trimeche M, Smaoui H, Cheikh RB, Smida M, Rebaï T, Keskes H, Oudadess H. ELABORATION AND EVALUATION OF A COMPOSITE BONE SUBSTITUTE BASED ON β-TCP/DCPD AND PHBV, PRELIMINARY RESULTS. BIOMEDICAL ENGINEERING: APPLICATIONS, BASIS AND COMMUNICATIONS 2016. [DOI: 10.4015/s1016237216500319] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Objective: In the present study, we investigate the biological performance of a calcium phosphate ceramics (CPC) bone substitute combined with poly-hydroxybutyrate-co-hydroxyvalerate (PHBV). Materials and Methods: A particulate CPC [45% beta-tricalcium phosphate ([Formula: see text]-TCP) and 55% of dihydrated dicalcium phosphate (DCPD)] was incorporated into a biodegradable copolymer PHBV. Two series of the composite, 1 and 2, with CPC–PHBV weight ratios of (40%–60% and 60%–40%), respectively, were prepared using chloroform for dissolving the polymer and a pressure molding process for shaping the composite samples. After particle size analysis, the two composites were characterized by scanning electron microscopy (SEM) and energy dispersive spectrometry (EDS). In a second step, a 10[Formula: see text]mm bony segmental defect created in the tibias of 20 New Zealand White Rabbits was filled randomly with either composite 1 for group 1 or composite 2 for group 2. There were 10 animals in each group. Clinical, radiological and histological assessments were then carried out to evaluate the biological properties of developed CPC–PHBV composites. Results: For both variants of the developed CPC–PHBV biocomposite, there was evidence of osseous consolidation within three months. An in vivo investigation revealed the biological properties of the biocomposite, namely, biocompatibility, bioactivity, biodegradability and osteoconductivity. The morphological characteristics, granule size and chemical composition, were indeed found to be favorable for osseous cell development. This study likewise showed lower mortality for the variant with weight ratio (40%CPC–60%PHBV). Conclusion: An in vivo investigation revealed that the new biomaterial composed of CPC and PHBV exhibits manifest osteoconductivity and bioactivity with better degradation kinetics than the CPC. Moreover, the variant with 40%CPC/60%PHBV appeared more resistant to infection than the 60%CPC/40%PHBV which is an indicator of biocompatibility.
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Affiliation(s)
- Monia Trimeche
- Laboratoire de Matériaux, d’Optimisation et d’Energie pour la Durabilité (LAMOED), Département Génie Industriel, Ecole Nationale d’Ingénieurs de Tunis, Université Tunis El Manar, Tunisia
| | - Hichem Smaoui
- Laboratoire de Matériaux, d’Optimisation et d’Energie pour la Durabilité (LAMOED), Département Génie Industriel, Ecole Nationale d’Ingénieurs de Tunis, Université Tunis El Manar, Tunisia
- Collège of Engineering, Prince Sattam bin Abdulaziz University, Kingdom of Saudi Arabia
| | - Ridha Ben Cheikh
- Laboratoire de Matériaux, d’Optimisation et d’Energie pour la Durabilité (LAMOED), Département Génie Industriel, Ecole Nationale d’Ingénieurs de Tunis, Université Tunis El Manar, Tunisia
| | - Mahmoud Smida
- Service d’Orthopédie de l’Enfant et l’Adolescent, Hôpital d’Enfants de Tunis, Faculté de Médecine de Tunis, Université Tunis El Manar, Tunisia
| | - Tarek Rebaï
- Laboratoire d’Histologie Embryologie, Faculté de Médecine de Sfax, Sfax, Tunisia
| | - Hassib Keskes
- Unité de Recherche d’Orthopédie-Traumatologie, Hôpital Habib Bourguiba, Sfax, Tunisia
| | - Hassane Oudadess
- Unité Sciences Chimiques de Rennes, UMR 6226 CNRS/Université de Rennes 1, Rennes, France
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Reyes AP, Martínez Torres A, Carreón Castro MDP, Rodríguez Talavera JR, Muñoz SV, Aguilar VMV, Torres MG. Novel Poly(3-hydroxybutyrate-g-vinyl alcohol) Polyurethane Scaffold for Tissue Engineering. Sci Rep 2016; 6:31140. [PMID: 27502732 PMCID: PMC4977462 DOI: 10.1038/srep31140] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2016] [Accepted: 07/12/2016] [Indexed: 12/21/2022] Open
Abstract
The design of new synthetic grafted poly(3-hydroxybutyrate) as composite 3D-scaffolds is a convenient alternative for tissue engineering applications. The chemically modified poly(3-hydroxybutyrate) is receiving increasing attention for use as biomimetic copolymers for cell growth. As of yet, these copolymers cannot be used efficiently because of the lack of good mechanical properties. Here, we address this challenge, preparing a composite-scaffold of grafted poly(3-hydroxybutyrate) polyurethane for the first time. However, it is unclear if the composite structure and morphology can also offer a biological application. We obtained the polyurethane by mixing a polyester hydroxylated resin with polyisocyanate and the modified polyhydroxyalkanoates. The results show that the poly(3-hydroxybutyrate) grafted with poly(vinyl alcohol) can be successfully used as a chain extender to form a chemically-crosslinked thermosetting polymer. Furthermore, we show a proposal for the mechanism of the polyurethane synthesis, the analysis of its morphology and the ability of the scaffolds for growing mammalian cells. We demonstrated that astrocytes isolated from mouse cerebellum, and HEK293 can be cultured in the prepared material, and express efficiently fluorescent proteins by adenoviral transduction. We also tested the metabolism of Ca(2+) to obtain evidence of the biological activity.
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Affiliation(s)
- Adriana Pétriz Reyes
- Laboratorio de Neurobiología Molecular y Celular, Instituto de Neurobiología, Universidad Nacional Autónoma de México, Querétaro 76230, México
| | - Ataúlfo Martínez Torres
- Laboratorio de Neurobiología Molecular y Celular, Instituto de Neurobiología, Universidad Nacional Autónoma de México, Querétaro 76230, México
| | | | | | - Susana Vargas Muñoz
- Centro de Física Aplicada y Tecnología Avanzada, Universidad Nacional Autónoma de México, Querétaro 76230, México
| | | | - Maykel González Torres
- Instituto de Ciencias Nucleares, Universidad Nacional Autónoma de México, México D.F, 04510, México
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31
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Lyu LX, Huang NP, Yang Y. Accelerating and increasing nano-scaled pore formation on electrospun poly(3-hydroxybutyrate-co-3-hydroxyvalerate) fibers. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2016; 27:1155-69. [DOI: 10.1080/09205063.2016.1184122] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Lan-Xin Lyu
- Institute for Science and Technology in Medicine, School of Medicine, Keele University, Stoke-on-Trent, UK
- First Aid and Relief Medical Department, Xuzhou Medical College, Emergency Center, The Affiliated Hospital of Xuzhou Medical College, Xuzhou, P.R. China
| | - Ning-Ping Huang
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing, P.R. China
| | - Ying Yang
- Institute for Science and Technology in Medicine, School of Medicine, Keele University, Stoke-on-Trent, UK
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32
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Qian J, Ma J, Su J, Yan Y, Li H, Shin JW, Wei J, Zhao L. PHBV-based ternary composite by intermixing of magnesium calcium phosphate nanoparticles and zein: In vitro bioactivity, degradability and cytocompatibility. Eur Polym J 2016. [DOI: 10.1016/j.eurpolymj.2015.12.026] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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33
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Goonasekera CS, Jack KS, Cooper-White JJ, Grøndahl L. Dispersion of hydroxyapatite nanoparticles in solution and in polycaprolactone composite scaffolds. J Mater Chem B 2016; 4:409-421. [DOI: 10.1039/c5tb02255j] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Structure–property–performance in TIPS fabricated nanocomposite scaffolds: influence of polymer–solvent interaction and phase-separation process on the dispersion and surface distribution of particles.
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Affiliation(s)
- Chandhi S. Goonasekera
- School of Chemistry and Molecular Biosciences
- The University of Queensland
- Australia
- Centre for Microscopy and Microanalysis
- The University of Queensland
| | - Kevin S. Jack
- Centre for Microscopy and Microanalysis
- The University of Queensland
- Australia
| | - Justin J. Cooper-White
- Tissue Engineering and Microfluidics Laboratory
- Australian Institute for Bioengineering and Nanotechnology
- The University of Queensland
- Australia
- The School of Chemical Engineering
| | - Lisbeth Grøndahl
- School of Chemistry and Molecular Biosciences
- The University of Queensland
- Australia
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34
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Yunus Basha R, Sampath Kumar TS, Doble M. Design of biocomposite materials for bone tissue regeneration. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2015; 57:452-63. [PMID: 26354284 DOI: 10.1016/j.msec.2015.07.016] [Citation(s) in RCA: 150] [Impact Index Per Article: 16.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/05/2014] [Revised: 05/24/2015] [Accepted: 07/09/2015] [Indexed: 02/06/2023]
Abstract
Several synthetic scaffolds are being developed using polymers, ceramics and their composites to overcome the limitations of auto- and allografts. Polymer-ceramic composites appear to be the most promising bone graft substitute since the natural bone itself is a composite of collagen and hydroxyapatite. Ceramics provide strength and osteoconductivity to the scaffold while polymers impart flexibility and resorbability. Natural polymers have an edge over synthetic polymers because of their biocompatibility and biological recognition property. But, very few natural polymer-ceramic composites are available as commercial products, and those few are predominantly based on type I collagen. Disadvantages of using collagen include allergic reactions and pathogen transmission. The commercial products also lack sufficient mechanical properties. This review summarizes the recent developments of biocomposite materials as bone scaffolds to overcome these drawbacks. Their characteristics, in vitro and in vivo performance are discussed with emphasis on their mechanical properties and ways to improve their performance.
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Affiliation(s)
- Rubaiya Yunus Basha
- Department of Biotechnology, Indian Institute of Technology Madras, Chennai 600036, India
| | - T S Sampath Kumar
- Department of Metallurgical and Materials Engineering, Indian Institute of Technology Madras, Chennai 600036, India
| | - Mukesh Doble
- Department of Biotechnology, Indian Institute of Technology Madras, Chennai 600036, India.
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35
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Nano-hydroxyapatite/chitosan-starch nanocomposite as a novel bone construct: Synthesis and in vitro studies. Int J Biol Macromol 2015; 80:282-92. [PMID: 26116779 DOI: 10.1016/j.ijbiomac.2015.05.009] [Citation(s) in RCA: 78] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2014] [Revised: 04/29/2015] [Accepted: 05/03/2015] [Indexed: 11/20/2022]
Abstract
A novel ternary nanocomposite system incorporating hydroxyapatite, chitosan and starch (n-HA/CS-ST) has been synthesized by co-precipitation method at room temperature, addressing the issues of biocompatibility, mechanical strength and cytotoxicity required for bone tissue engineering. The interactions, crystallite size, surface morphology and thermal stability against n-HA/CS nanocomposite have been obtained by comparing the results of FTIR, SEM, TEM, DLS, XRD and TGA/DTA. A comparative study of bioactivity and thermal stability of n-HA/CS and n-HA/CS-ST nanocomposites revealed that the incorporation of starch as templating agent enhanced these properties in n-HA/CS-ST nanocomposite. A lower swelling rate of n-HA/CS-ST relative to n-HA/CS indicates a higher mechanical strength supportive of bone tissue ingrowths. The MTT assay on murine fibroblast L929 and human osteoblasts-like MG-63 cells and in vitro bioactivity of n-HA/CS-ST matrix referred superior non-toxic nature of n-HA/CS-ST nanocomposite and greater possibility of osteointegration in vivo respectively. Furthermore n-HA/CS-ST exhibited improved antibacterial property against both Gram-positive and Gram-negative bacteria relative to n-HA/CS.
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36
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Electrophoretic deposition of antibiotic loaded PHBV microsphere-alginate composite coating with controlled delivery potential. Colloids Surf B Biointerfaces 2015; 130:199-206. [DOI: 10.1016/j.colsurfb.2015.04.009] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2015] [Revised: 04/02/2015] [Accepted: 04/05/2015] [Indexed: 12/15/2022]
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37
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Mota C, Wang SY, Puppi D, Gazzarri M, Migone C, Chiellini F, Chen GQ, Chiellini E. Additive manufacturing of poly[(R)-3-hydroxybutyrate-co-(R)-3-hydroxyhexanoate] scaffolds for engineered bone development. J Tissue Eng Regen Med 2014; 11:175-186. [DOI: 10.1002/term.1897] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2013] [Revised: 02/13/2014] [Accepted: 03/17/2014] [Indexed: 11/11/2022]
Affiliation(s)
- Carlos Mota
- Laboratory of Bioactive Polymeric Materials for Biomedical and Environmental Applications (BIOLab), Department of Chemistry and Industrial Chemistry; University of Pisa; Italy
| | - Shen-Yu Wang
- Department of Biological Sciences and Biotechnology, School of Life Science; Tsinghua University; Beijing People's Republic of China
| | - Dario Puppi
- Laboratory of Bioactive Polymeric Materials for Biomedical and Environmental Applications (BIOLab), Department of Chemistry and Industrial Chemistry; University of Pisa; Italy
| | - Matteo Gazzarri
- Laboratory of Bioactive Polymeric Materials for Biomedical and Environmental Applications (BIOLab), Department of Chemistry and Industrial Chemistry; University of Pisa; Italy
| | - Chiara Migone
- Laboratory of Bioactive Polymeric Materials for Biomedical and Environmental Applications (BIOLab), Department of Chemistry and Industrial Chemistry; University of Pisa; Italy
| | - Federica Chiellini
- Laboratory of Bioactive Polymeric Materials for Biomedical and Environmental Applications (BIOLab), Department of Chemistry and Industrial Chemistry; University of Pisa; Italy
| | - Guo-Qiang Chen
- Department of Biological Sciences and Biotechnology, School of Life Science; Tsinghua University; Beijing People's Republic of China
| | - Emo Chiellini
- Laboratory of Bioactive Polymeric Materials for Biomedical and Environmental Applications (BIOLab), Department of Chemistry and Industrial Chemistry; University of Pisa; Italy
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38
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Novel scaffolds fabricated using oleuropein for bone tissue engineering. BIOMED RESEARCH INTERNATIONAL 2014; 2014:652432. [PMID: 24959582 PMCID: PMC4052823 DOI: 10.1155/2014/652432] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/13/2013] [Revised: 03/10/2014] [Accepted: 03/29/2014] [Indexed: 11/18/2022]
Abstract
We investigated the feasibility of oleuropein as a cross-linking agent for fabricating three-dimensional (3D) porous composite scaffolds for bone tissue engineering. Human-like collagen (HLC) and nanohydroxyapatite (n-HAp) were used to fabricate the composite scaffold by way of cross-linking. The mechanical tests revealed superior properties for the cross-linked scaffolds compared to the uncross-linked scaffolds. The as-obtained composite scaffold had a 3D porous structure with pores ranging from 120 to 300 μ m and a porosity of 73.6 ± 2.3%. The cross-linked scaffolds were seeded with MC3T3-E1 Subclone 14 mouse osteoblasts. Fluorescence staining, the Cell Counting Kit-8 (CCK-8) assay, and scanning electron microscopy (SEM) indicated that the scaffolds enhanced cell adhesion and proliferation. Our results indicate the potential of these scaffolds for bone tissue engineering.
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39
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Mi HY, Jing X, Turng LS. Fabrication of porous synthetic polymer scaffolds for tissue engineering. J CELL PLAST 2014. [DOI: 10.1177/0021955x14531002] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Tissue engineering provides a novel and promising approach to replace damaged tissue with an artificial substitute. Porous synthetic biodegradable polymers are the preferred materials for this substitution due to their microstructure, biocompatibility, biodegradability, and low cost. As a crucial element in tissue engineering, a scaffold acts as an artificial extracellular matrix (ECM) and provides support for cell migration, differentiation, and reproduction. The fabrication of viable scaffolds, however, has been a challenge in both clinical and academic settings. Methods such as solvent casting/particle leaching, thermally induced phase separation (TIPS), electrospinning, gas foaming, and rapid prototyping (additive manufacturing) have been developed or introduced for scaffold fabrication. Each method has its own advantages and disadvantages. In this review, the commonly used synthetic polymer scaffold fabrication methods will be introduced and discussed in detail, and recent progress regarding scaffold fabrication—such as combining different scaffold fabrication methods, combining various materials, and improving current scaffold fabrication methods—will be reviewed as well.
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Affiliation(s)
- Hao-Yang Mi
- Wisconsin Institute for Discovery, University of Wisconsin–Madison, Madison, WI, USA
- National Engineering Research Center of Novel Equipment for Polymer Processing, South China University of Technology, Guangzhou, China
- Department of Mechanical Engineering, University of Wisconsin–Madison, Madison, WI , USA
| | - Xin Jing
- Wisconsin Institute for Discovery, University of Wisconsin–Madison, Madison, WI, USA
- National Engineering Research Center of Novel Equipment for Polymer Processing, South China University of Technology, Guangzhou, China
- Department of Mechanical Engineering, University of Wisconsin–Madison, Madison, WI , USA
| | - Lih-Sheng Turng
- Wisconsin Institute for Discovery, University of Wisconsin–Madison, Madison, WI, USA
- Department of Mechanical Engineering, University of Wisconsin–Madison, Madison, WI , USA
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40
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Jing X, Mi HY, Salick MR, Cordie T, Crone WC, Peng XF, Turng LS. Morphology, mechanical properties, and shape memory effects of poly(lactic acid)/ thermoplastic polyurethane blend scaffolds prepared by thermally induced phase separation. J CELL PLAST 2014. [DOI: 10.1177/0021955x14525959] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Novel blended scaffolds combining biobased polylactic acid (PLA) and thermoplastic polyurethane (TPU) were fabricated by thermally induced phase separation (TIPS) using two different solvents. Pure PLA and TPU polymer scaffolds using 1,4-dioxane as the sole solvent exhibited typical ladder-like structures, while blended PLA/TPU scaffolds using the same solvent showed a more uniform microstructure. When de-ionized water was added to the solution as a non-solvent, scaffolds with the mixed solvent showed more open cells and greater interconnectivity. In compression tests, it was found that specimens, including pure PLA, TPU, and blended scaffolds with the mixed solvent, showed a higher compressive modulus than their counterparts that used dioxane as the single solvent. Dynamic mechanical analysis (DMA) was employed to characterize the shape memory properties of the scaffolds. DMA indicated that the shape fixing ratio was highest in the PLA scaffolds, while the shape recovery ratio of the TPU scaffolds was the greatest among the specimens. More interestingly, when the mixed solvent was used, the shape memory property of the blended scaffolds displayed a similar deformation curve to the TPU scaffold. This was due to the presence of the TPU phase and similarity in structure between PLA/TPU and TPU scaffolds when mixed solvent was used. In the degradation test, the blended scaffolds showed a balanced degradation behavior in-between the more easily degraded PLA and the more stable TPU in the phosphate-buffered saline (PBS), and the addition of water to the systems accelerated the degradation process of the specimens. Cell culture results showed that all of the scaffolds had good biocompatibility.
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Affiliation(s)
- Xin Jing
- National Engineering Research Center of Novel Equipment for Polymer Processing, South China University of Technology, Guangzhou, China
- Wisconsin Institute for Discovery, University of Wisconsin-Madison, WI, USA
| | - Hao-Yang Mi
- National Engineering Research Center of Novel Equipment for Polymer Processing, South China University of Technology, Guangzhou, China
- Wisconsin Institute for Discovery, University of Wisconsin-Madison, WI, USA
| | - Max R Salick
- Department of Engineering Physics, University of Wisconsin-Madison, WI, USA
| | - Travis Cordie
- Department of Biomedical Engineering, University of Wisconsin-Madison, WI, USA
| | - Wendy C Crone
- Department of Engineering Physics, University of Wisconsin-Madison, WI, USA
| | - Xiang-Fang Peng
- National Engineering Research Center of Novel Equipment for Polymer Processing, South China University of Technology, Guangzhou, China
| | - Lih-Sheng Turng
- Wisconsin Institute for Discovery, University of Wisconsin-Madison, WI, USA
- Department of Mechanical Engineering, University of Wisconsin-Madison, WI, USA
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41
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Marei MK, Nagy NB, Saad MS, Zaky SH, Elbackly RM, Eweida AM, Alkhodary MA. Strategy for a Biomimetic Paradigm in Dental and Craniofacial Tissue Engineering. Biomimetics (Basel) 2013. [DOI: 10.1002/9781118810408.ch6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
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42
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Young MD, Tran N, Tran PA, Jarrell JD, Hayda RA, Born CT. Niobium oxide-polydimethylsiloxane hybrid composite coatings for tuning primary fibroblast functions. J Biomed Mater Res A 2013; 102:1478-85. [DOI: 10.1002/jbm.a.34832] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2013] [Revised: 04/10/2013] [Accepted: 06/03/2013] [Indexed: 11/07/2022]
Affiliation(s)
- Matthew D. Young
- Alpert Medical School; Brown University; Providence Rhode Island 02903
| | - Nhiem Tran
- Alpert Medical School; Brown University; Providence Rhode Island 02903
- Department of Orthopaedics; Rhode Island Hospital; Providence Rhode Island 02903
| | - Phong A. Tran
- Alpert Medical School; Brown University; Providence Rhode Island 02903
- Department of Orthopaedics; Rhode Island Hospital; Providence Rhode Island 02903
| | - John D. Jarrell
- Department of Orthopaedics; Rhode Island Hospital; Providence Rhode Island 02903
- BioIntraface Inc.; North Kingstown Rhode Island 02852
| | - Roman A. Hayda
- Alpert Medical School; Brown University; Providence Rhode Island 02903
- Department of Orthopaedics; Rhode Island Hospital; Providence Rhode Island 02903
| | - Chistopher T. Born
- Alpert Medical School; Brown University; Providence Rhode Island 02903
- Department of Orthopaedics; Rhode Island Hospital; Providence Rhode Island 02903
- BioIntraface Inc.; North Kingstown Rhode Island 02852
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43
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Silva JM, Videira M, Gaspar R, Préat V, Florindo HF. Immune system targeting by biodegradable nanoparticles for cancer vaccines. J Control Release 2013; 168:179-99. [PMID: 23524187 DOI: 10.1016/j.jconrel.2013.03.010] [Citation(s) in RCA: 159] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2012] [Revised: 03/11/2013] [Accepted: 03/14/2013] [Indexed: 01/08/2023]
Abstract
The concept of therapeutic cancer vaccines is based on the activation of the immune system against tumor cells after the presentation of tumor antigens. Nanoparticles (NPs) have shown great potential as delivery systems for cancer vaccines as they potentiate the co-delivery of tumor-associated antigens and adjuvants to dendritic cells (DCs), insuring effective activation of the immune system against tumor cells. In this review, the immunological mechanisms behind cancer vaccines, including the role of DCs in the stimulation of T lymphocytes and the use of Toll-like receptor (TLR) ligands as adjuvants will be discussed. An overview of each of the three essential components of a therapeutic cancer vaccine - antigen, adjuvant and delivery system - will be provided with special emphasis on the potential of particulate delivery systems for cancer vaccines, in particular those made of biodegradable aliphatic polyesters, such as poly(lactic-co-glycolic acid) (PLGA) and poly-ε-caprolactone (PCL). Some of the factors that can influence NP uptake by DCs, including size, surface charge, surface functionalization and route of administration, will also be considered.
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Affiliation(s)
- Joana M Silva
- iMed.UL, Research Institute for Medicines and Pharmaceutical Sciences, Faculty of Pharmacy, University of Lisbon, 1649-003 Lisbon, Portugal
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Zhao H, Cui Z, Sun X, Turng LS, Peng X. Morphology and Properties of Injection Molded Solid and Microcellular Polylactic Acid/Polyhydroxybutyrate-Valerate (PLA/PHBV) Blends. Ind Eng Chem Res 2013. [DOI: 10.1021/ie301573y] [Citation(s) in RCA: 97] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Haibin Zhao
- National Engineering Research
Center of Novel Equipment for Polymer Processing, The Key Laboratory
of Polymer Processing Engineering Ministry of Education, South China University of Technology, Guangzhou, China
| | - Zhixiang Cui
- School of Materials Science
and Engineering, Fujian University of Technology, Fuzhou, China
| | - Xiaofei Sun
- Polymer
Engineering Center, University of Wisconsin−Madison, Wisconsin,
United States
| | - Lih-Sheng Turng
- Polymer
Engineering Center, University of Wisconsin−Madison, Wisconsin,
United States
| | - Xiangfang Peng
- National Engineering Research
Center of Novel Equipment for Polymer Processing, The Key Laboratory
of Polymer Processing Engineering Ministry of Education, South China University of Technology, Guangzhou, China
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Wang L, Du J, Cao D, Wang Y. Recent Advances and the Application of Poly(3-hydroxybutyrate-co-3-hydroxyvalerate) as Tissue Engineering Materials. JOURNAL OF MACROMOLECULAR SCIENCE PART A-PURE AND APPLIED CHEMISTRY 2013. [DOI: 10.1080/10601325.2013.802540] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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46
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Raafat AI, Saad Eldin AA, Salama AA, Ali NS. Characterization and bioactivity evaluation of (starch/N-vinylpyrrolidone)-hydroxyapatite nanocomposite hydrogels for bone tissue regeneration. J Appl Polym Sci 2012. [DOI: 10.1002/app.38113] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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47
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Allo BA, Costa DO, Dixon SJ, Mequanint K, Rizkalla AS. Bioactive and biodegradable nanocomposites and hybrid biomaterials for bone regeneration. J Funct Biomater 2012; 3:432-63. [PMID: 24955542 PMCID: PMC4047942 DOI: 10.3390/jfb3020432] [Citation(s) in RCA: 106] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2012] [Revised: 06/09/2012] [Accepted: 06/14/2012] [Indexed: 02/04/2023] Open
Abstract
Strategies for bone tissue engineering and regeneration rely on bioactive scaffolds to mimic the natural extracellular matrix and act as templates onto which cells attach, multiply, migrate and function. Of particular interest are nanocomposites and organic-inorganic (O/I) hybrid biomaterials based on selective combinations of biodegradable polymers and bioactive inorganic materials. In this paper, we review the current state of bioactive and biodegradable nanocomposite and O/I hybrid biomaterials and their applications in bone regeneration. We focus specifically on nanocomposites based on nano-sized hydroxyapatite (HA) and bioactive glass (BG) fillers in combination with biodegradable polyesters and their hybrid counterparts. Topics include 3D scaffold design, materials that are widely used in bone regeneration, and recent trends in next generation biomaterials. We conclude with a perspective on the future application of nanocomposites and O/I hybrid biomaterials for regeneration of bone.
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Affiliation(s)
- Bedilu A Allo
- Department of Chemical and Biochemical Engineering, The University of Western Ontario, London, Ontario N6A 5B9, Canada.
| | - Daniel O Costa
- Department of Chemical and Biochemical Engineering, The University of Western Ontario, London, Ontario N6A 5B9, Canada.
| | - S Jeffrey Dixon
- Department of Physiology and Pharmacology, Schulich School of Medicine & Dentistry, The University of Western Ontario, London, Ontario N6A 5C1, Canada.
| | - Kibret Mequanint
- Department of Chemical and Biochemical Engineering, The University of Western Ontario, London, Ontario N6A 5B9, Canada.
| | - Amin S Rizkalla
- Department of Chemical and Biochemical Engineering, The University of Western Ontario, London, Ontario N6A 5B9, Canada.
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Nemati Hayati A, Hosseinalipour S, Rezaie H, Shokrgozar M. Characterization of poly(3-hydroxybutyrate)/nano-hydroxyapatite composite scaffolds fabricated without the use of organic solvents for bone tissue engineering applications. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2012. [DOI: 10.1016/j.msec.2011.11.013] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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49
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Medvecky L. Microstructure and properties of polyhydroxybutyrate-chitosan-nanohydroxyapatite composite scaffolds. ScientificWorldJournal 2012; 2012:537973. [PMID: 22547987 PMCID: PMC3322489 DOI: 10.1100/2012/537973] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2011] [Accepted: 10/31/2011] [Indexed: 11/17/2022] Open
Abstract
Polyhydroxybutyrate-chitosan-hydroxyapatite (PHB-CHT-HAP) composite scaffolds were prepared by the precipitation of biopolymer-nanohydroxyapatite suspensions and following lyophilisation. The propylene carbonate and acetic acid were used as the polyhydroxybutyrate and chitosan solvents, respectively. The high porous microstructure was observed in composites and the macroporosity of scaffolds (pore sizes up to 100 μm) rose with the chitosan content. It was found the reduction in both the PHB melting (70°C) and thermal degradation temperatures of polyhydroxybutyrate and chitosan biopolymers in composites, which confirms the mutual ineraction between polymers and the decrease of PHB lamellar thickness. No preferential preconcentration of individual biopolymers was verified in composites, and the compressive strengths of macroporous PHB-CHT-HAP scaffolds were approximately 2.5 MPa. The high toxic fluorinated cosolvents were avoided from the preparation process.
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Affiliation(s)
- L Medvecky
- Department of Electroceramics, Institute of Materials Research of SAS, Watsonova 47, 040 01 Kosice, Slovakia.
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Liu L, Wang Y, Guo S, Wang Z, Wang W. Porous polycaprolactone/nanohydroxyapatite tissue engineering scaffolds fabricated by combining NaCl and PEG as co-porogens: Structure, property, and chondrocyte-scaffold interaction in vitro. J Biomed Mater Res B Appl Biomater 2012; 100:956-66. [DOI: 10.1002/jbm.b.32658] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2010] [Revised: 09/11/2011] [Accepted: 09/12/2011] [Indexed: 11/11/2022]
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