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Canciani E, Straticò P, Varasano V, Dellavia C, Sciarrini C, Petrizzi L, Rimondini L, Varoni EM. Polylevolysine and Fibronectin-Loaded Nano-Hydroxyapatite/PGLA/Dextran-Based Scaffolds for Improving Bone Regeneration: A Histomorphometric in Animal Study. Int J Mol Sci 2023; 24:ijms24098137. [PMID: 37175849 PMCID: PMC10179305 DOI: 10.3390/ijms24098137] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2023] [Revised: 04/21/2023] [Accepted: 04/27/2023] [Indexed: 05/15/2023] Open
Abstract
The regeneration of large bone defects is still demanding, requiring biocompatible scaffolds, with osteoconductive and osteoinductive properties. This study aimed to assess the pre-clinical efficacy of a nano-hydroxyapatite (nano-HA)/PGLA/dextran-based scaffold loaded with Polylevolysine (PLL) and fibronectin (FN), intended for bone regeneration of a critical-size tibial defect, using an ovine model. After physicochemical characterization, the scaffolds were implanted in vivo, producing two monocortical defects on both tibiae of ten adult sheep, randomly divided into two groups to be euthanized at three and six months after surgery. The proximal left and right defects were filled, respectively, with the test scaffold (nano-HA/PGLA/dextran-based scaffold loaded with PLL and FN) and the control scaffold (nano-HA/PGLA/dextran-based scaffold not loaded with PLL and FN); the distal defects were considered negative control sites, not receiving any scaffold. Histological and histomorphometric analyses were performed to quantify the bone ingrowth and residual material 3 and 6 months after surgery. In both scaffolds, the morphological analyses, at the SEM, revealed the presence of submicrometric crystals on the surfaces and within the scaffolds, while optical microscopy showed a macroscopic 3D porous architecture. XRD confirmed the presence of nano-HA with a high level of crystallinity degree. At the histological and histomorphometric evaluation, new bone formation and residual biomaterial were detectable inside the defects 3 months after intervention, without differences between the scaffolds. At 6 months, the regenerated bone was significantly higher in the defects filled with the test scaffold (loaded with PLL and FN) than in those filled with the control scaffold, while the residual material was higher in correspondence to the control scaffold. Nano-HA/PGLA/dextran-based scaffolds loaded with PLL and FN appear promising in promoting bone regeneration in critical-size defects, showing balanced regenerative and resorbable properties to support new bone deposition.
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Affiliation(s)
- Elena Canciani
- Department of Health Sciences, Università del Piemonte Orientale, 28100 Novara, Italy
| | - Paola Straticò
- Department of Veterinary Medicine, University of Teramo, 64100 Teramo, Italy
| | - Vincenzo Varasano
- Department of Veterinary Medicine, University of Teramo, 64100 Teramo, Italy
| | - Claudia Dellavia
- Department of Biomedical, Surgical and Dental Sciences, Università degli Studi di Milano, 20142 Milan, Italy
| | - Chiara Sciarrini
- Department of Veterinary Medicine, University of Teramo, 64100 Teramo, Italy
| | - Lucio Petrizzi
- Department of Veterinary Medicine, University of Teramo, 64100 Teramo, Italy
| | - Lia Rimondini
- Department of Health Sciences, Università del Piemonte Orientale, 28100 Novara, Italy
| | - Elena M Varoni
- Department of Biomedical, Surgical and Dental Sciences, Università degli Studi di Milano, 20142 Milan, Italy
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Gurgul SJ, Moreira A, Xiao Y, Varma SN, Liu C, Costa PF, Williams GR. Electrosprayed Particles Loaded with Kartogenin as a Potential Osteochondral Repair Implant. Polymers (Basel) 2023; 15:polym15051275. [PMID: 36904516 PMCID: PMC10007262 DOI: 10.3390/polym15051275] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2023] [Revised: 02/24/2023] [Accepted: 02/25/2023] [Indexed: 03/06/2023] Open
Abstract
The restoration of cartilage damage is a slow and not always successful process. Kartogenin (KGN) has significant potential in this space-it is able to induce the chondrogenic differentiation of stem cells and protect articular chondrocytes. In this work, a series of poly(lactic-co-glycolic acid) (PLGA)-based particles loaded with KGN were successfully electrosprayed. In this family of materials, PLGA was blended with a hydrophilic polymer (either polyethyleneglycol (PEG) or polyvinylpyrrolidone (PVP)) to control the release rate. Spherical particles with sizes in the range of 2.4-4.1 µm were fabricated. They were found to comprise amorphous solid dispersions, with high entrapment efficiencies of >93%. The various blends of polymers had a range of release profiles. The PLGA-KGN particles displayed the slowest release rate, and blending with PVP or PEG led to faster release profiles, with most systems giving a high burst release in the first 24 h. The range of release profiles observed offers the potential to provide a precisely tailored profile via preparing physical mixtures of the materials. The formulations are highly cytocompatible with primary human osteoblasts.
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Affiliation(s)
| | | | - Yi Xiao
- UCL School of Pharmacy, University College London, London WC1N 1AX, UK
| | - Swastina Nath Varma
- Institute of Orthopaedic and Musculoskeletal Science, University College London, Royal National Orthopaedic Hospital, Stanmore HA7 4AP, UK
| | - Chaozong Liu
- Institute of Orthopaedic and Musculoskeletal Science, University College London, Royal National Orthopaedic Hospital, Stanmore HA7 4AP, UK
| | | | - Gareth R. Williams
- UCL School of Pharmacy, University College London, London WC1N 1AX, UK
- Correspondence: ; Tel.: +44-0203-987-2817
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Shen Y, Li D, Kou X, Wang R, Liu F, Li Z. Ultrafast ring-opening copolymerization of lactide with glycolide toward random poly(lactic-co-glycolic acid) copolymers by organophosphazene base and urea binary catalysts. Polym Chem 2022. [DOI: 10.1039/d1py01653a] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The preparation of poly(lactic-co-glycolic acid) (PLGA) copolymers with controllable random microstructures remains as a challenge due to the much higher reactivity of glycolide (GA) compared to lactide (LA). In this...
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Jin S, Xia X, Huang J, Yuan C, Zuo Y, Li Y, Li J. Recent advances in PLGA-based biomaterials for bone tissue regeneration. Acta Biomater 2021; 127:56-79. [PMID: 33831569 DOI: 10.1016/j.actbio.2021.03.067] [Citation(s) in RCA: 110] [Impact Index Per Article: 36.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2021] [Revised: 03/29/2021] [Accepted: 03/31/2021] [Indexed: 12/14/2022]
Abstract
Bone regeneration is an interdisciplinary complex lesson, including but not limited to materials science, biomechanics, immunology, and biology. Having witnessed impressive progress in the past decades in the development of bone substitutes; however, it must be said that the most suitable biomaterial for bone regeneration remains an area of intense debate. Since its discovery, poly (lactic-co-glycolic acid) (PLGA) has been widely used in bone tissue engineering due to its good biocompatibility and adjustable biodegradability. This review systematically covers the past and the most recent advances in developing PLGA-based bone regeneration materials. Taking the different application forms of PLGA-based materials as the starting point, we describe each form's specific application and its corresponding advantages and disadvantages with many examples. We focus on the progress of electrospun nanofibrous scaffolds, three-dimensional (3D) printed scaffolds, microspheres/nanoparticles, hydrogels, multiphasic scaffolds, and stents prepared by other traditional and emerging methods. Finally, we briefly discuss the current limitations and future directions of PLGA-based bone repair materials. STATEMENT OF SIGNIFICANCE: As a key synthetic biopolymer in bone tissue engineering application, the progress of PLGA-based bone substitute is impressive. In this review, we summarized the past and the most recent advances in the development of PLGA-based bone regeneration materials. According to the typical application forms and corresponding crafts of PLGA-based substitutes, we described the development of electrospinning nanofibrous scaffolds, 3D printed scaffolds, microspheres/nanoparticles, hydrogels, multiphasic scaffolds and scaffolds fabricated by other manufacturing process. Finally, we briefly discussed the current limitations and proposed the newly strategy for the design and fabrication of PLGA-based bone materials or devices.
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Zhang X, Li Z, Yang P, Duan G, Liu X, Gu Z, Li Y. Polyphenol scaffolds in tissue engineering. MATERIALS HORIZONS 2021; 8:145-167. [PMID: 34821294 DOI: 10.1039/d0mh01317j] [Citation(s) in RCA: 151] [Impact Index Per Article: 50.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Polyphenols are a class of ubiquitous compounds distributed in nature, with fascinating inherent biocompatible, bioadhesive, antioxidant, and antibacterial properties. The unique polyphenolic structures based on catechol or pyrogallol moieties allow for strong non-covalent interactions (e.g., multiple hydrogen bonding, electrostatic, and cation-π interactions) as well as covalent interactions (e.g., Michael addition/Schiff-base reaction, radical coupling reaction, and dynamic coordination interactions with boronate or metal ions). This review article provides an overview of the polyphenol-based scaffolds including the hydrogels, films, and nanofibers that have emerged from chemical and functional signatures during the past years. A full description of the structure-function relationships in terms of their utilization in wound healing, bone regeneration, and electroactive tissue engineering is also carefully discussed, which may pave the path towards the rational design and facile preparation of next-generation polyphenol scaffolds for tissue engineering applications.
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Affiliation(s)
- Xueqian Zhang
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China.
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Soheilmoghaddam M, Padmanabhan H, Cooper-White JJ. Biomimetic cues from poly(lactic-co-glycolic acid)/hydroxyapatite nano-fibrous scaffolds drive osteogenic commitment in human mesenchymal stem cells in the absence of osteogenic factor supplements. Biomater Sci 2020; 8:5677-5689. [PMID: 32915185 DOI: 10.1039/d0bm00946f] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Mimicking the complex hierarchical architecture of the 'osteon', the functional unit of cortical bone, from the bottom-up offers the possibility of generating mature bone tissue in tissue engineered bone substitutes. In this work, a modular 'bottom-up' approach has been developed to assemble bone niche-mimicking nanocomposite scaffolds composed of aligned electrospun nanofibers of poly(lactic-co-glycolic acid) (PLGA) encapsulating aligned rod-shape nano-sized hydroxyapatite (nHA). By encoding axial orientation of the nHA within these aligned nanocomposite fibers, significant improvements in mechanical properties, surface roughness, hydrophilicity and in vitro simulated body fluid (SBF) mineral deposition were achieved. Moreover, these hierarchical scaffolds induced robust formation of bone hydroxyapatite and osteoblastic maturation of human bone marrow-derived mesenchymal stem cells (hBMSCs) in growth media that was absent of any soluble osteogenic differentiation factors. The results of this investigation confirm that these tailored, aligned nanocomposite fibers, in the absence of media-bone inductive factors, offer the requisite biophysical and biochemical cues to hBMSCs to promote and support their differentiation into mature osteoblast cells and form early bone-like tissue in vitro.
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Affiliation(s)
- Mohammad Soheilmoghaddam
- Tissue Engineering and Microfluidics Laboratory (TE&M), Australian Institute for Bioengineering and Nanotechnology (AIBN), University Of Queensland, St Lucia, QLD, Australia.
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Rezaei Z, Mahmoudifard M. Pivotal role of electrospun nanofibers in microfluidic diagnostic systems - a review. J Mater Chem B 2020; 7:4602-4619. [PMID: 31364667 DOI: 10.1039/c9tb00682f] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Recently, the usage of electrospinning technology for the fabrication of fine fibers with a good deal of variation in morphology and structure has drawn the attention of many researchers around the world. These fibers have found their way in the many fields of science including medical diagnosis, tissue engineering, drug delivery, replica molding, solar cells, catalysts, energy conversion and storage, physical and chemical sensors and other applications. Among all applications, biosensing with the aim of rapid and sensitive biomarker detection is an area that warrants attention. Electrospun nanofibrous membranes enjoy numerous factors which benefit them to be used as potential candidates in biosensing platforms. Some of these factors include a high surface to volume ratio, analogous scale compared to bioactive molecules and relatively defect-free properties of nanofibers (NFs). In this review, we focused on the recent advances in electrospun nanofibrous membrane-based micro-analytical devices with an application as diagnostic systems. Hence, a study on the electrospun nanofiber usage in lab-on-a-chip and paper-based point-of-care devices, with an opening introduction to biosensors, nanofibers, the electrospinning method, and microfluidics as the principles of the intended subject, is provided. It is anticipated that the given examples in this paper will provide sufficient evidence for the potential of electrospun NFs for being used as a substrate in the commercial fabrication of highly sensitive and selective biosensors.
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Affiliation(s)
- Zahra Rezaei
- Department of Industrial and Environmental Biotechnology, National Institute of Genetic Engineering and Biotechnology, Tehran, Iran and Chemical & Petroleum Engineering Department, Sharif University of Technology, Tehran, Iran.
| | - Matin Mahmoudifard
- Department of Industrial and Environmental Biotechnology, National Institute of Genetic Engineering and Biotechnology, Tehran, Iran
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8
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Godino Izquierdo M. Osteogenic in vitro training of bone marrow mesenquimal cells for application in segmentary bone resections. Rev Esp Cir Ortop Traumatol (Engl Ed) 2020. [DOI: 10.1016/j.recote.2020.06.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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Salifu AA, Obayemi JD, Uzonwanne VO, Soboyejo WO. Mechanical stimulation improves osteogenesis and the mechanical properties of osteoblast-laden RGD-functionalized polycaprolactone/hydroxyapatite scaffolds. J Biomed Mater Res A 2020; 108:2421-2434. [PMID: 32362069 DOI: 10.1002/jbm.a.36993] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2019] [Revised: 03/26/2020] [Accepted: 04/04/2020] [Indexed: 11/10/2022]
Abstract
This article presents the results of the combined effects of RGD (arginine-glycine-aspartate) functionalization and mechanical stimulation on osteogenesis that could lead to the development of implantable robust tissue-engineered mineralized constructs. Porous polycaprolactone/hydroxyapatite (PCL/HA) scaffolds are functionalized with RGD-C (arginine-glycine-aspartate-cysteine) peptide. The effects of RGD functionalization are then explored on human fetal osteoblast cell adhesion, proliferation, osteogenic differentiation (alkaline phosphatase activity), extracellular matrix (ECM) production, and mineralization over 28 days. The effects of RGD functionalization followed by mechanical stimulation with a cyclic fluid shear stress of 3.93 mPa in a perfusion bioreactor are also elucidated. The tensile properties (Young's moduli and ultimate tensile strengths) of the cell-laden scaffolds are measured at different stages of cell culture to understand how the mechanical properties of the tissue-engineered structures evolve. RGD functionalization is shown to promote initial cell adhesion, proliferation, alkaline phosphatase (ALP) activity, and ECM production. However, it does not significantly affect mineralization and tensile properties. Mechanical stimulation after RGD functionalization is shown to further improve the ALP activity, ECM production, mineralization, and tensile properties, but not cell proliferation. The results suggest that combined RGD functionalization and mechanical stimulation of cell-laden PCL/HA scaffolds can be used to accelerate the regeneration of robust bioengineered bone structures.
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Affiliation(s)
- Ali A Salifu
- Materials Science and Engineering Program, Department of Mechanical Engineering, Worcester Polytechnic Institute, Worcester, Massachusetts, USA.,Department of Biomedical Engineering, Worcester Polytechnic Institute, Worcester, Massachusetts, USA
| | - John D Obayemi
- Materials Science and Engineering Program, Department of Mechanical Engineering, Worcester Polytechnic Institute, Worcester, Massachusetts, USA.,Department of Biomedical Engineering, Worcester Polytechnic Institute, Worcester, Massachusetts, USA
| | - Vanessa O Uzonwanne
- Materials Science and Engineering Program, Department of Mechanical Engineering, Worcester Polytechnic Institute, Worcester, Massachusetts, USA
| | - Winston O Soboyejo
- Materials Science and Engineering Program, Department of Mechanical Engineering, Worcester Polytechnic Institute, Worcester, Massachusetts, USA.,Department of Biomedical Engineering, Worcester Polytechnic Institute, Worcester, Massachusetts, USA
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10
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Godino Izquierdo M. Osteogenic in vitro training of bone marrow mesenquimal cells for application in segmentary bone resections. Rev Esp Cir Ortop Traumatol (Engl Ed) 2020; 64:236-243. [PMID: 32473814 DOI: 10.1016/j.recot.2020.04.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2019] [Revised: 02/18/2020] [Accepted: 04/09/2020] [Indexed: 11/15/2022] Open
Abstract
OBJECTIVE To achieve bone continuity in an experimental model of segmental resection of femur bone by applying a treatment with committed to osteogenic bone linage mesenchymal stem cells. MATERIAL AND METHOD Bone marrow mesenchymal stem cells, obtained from syngeneic Wistar murine, were committed into osteogenic lineage and embedded within a hydroxipatite block. They were implanted in an experimentally created diaphyseal femur resection model. The diaphysis was synthetized with a 1.5mm thick plate. In order to calculate binomial distributions, we stablished one experimental and 3 control groups of 8 elements each: Group I, filling the gap with allograft; group ii, filling with a hydroxyapatite block without cells; group iii, filling with the hydroxyapatite block embedded with committed cells, and group iv, with the hydroxyapatite embedded with osteoinduced cells in a 3 dimensions TRAP culture. Descriptive analysis was performed by frequency distribution and Fisher statistic test. Level of statistical significance was considered at P<.05. RESULTS Group I presented good bone consolidation and no plate breakage. Group II showed fibrous but non-bone tissue, with rupture of all plates. Group III showed bone tissue in all cases, but the plates broke in all of them, while in group iv bone consolidation was achieve without any plate rupture. CONCLUSION Cell therapy with mesenchymal stem cells, trained in a 3 dimensions cell culture, produces bone tissue and ensures the permanence of the mechanical stabilization performed in a segmental resection model. LIMITATIONS A study with a larger sample size is necessary before planning the human inference.
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Affiliation(s)
- M Godino Izquierdo
- Servicio de Traumatología y Ortopedia, Hospital Costa del Sol, Marbella, Málaga, España.
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Shang ZY, Sun H, Xiang HF, Zhang J, Yu M, Zhao HS, Zhao CT, Long YZ. Three-dimensional porous composite scaffolds for in vitro marrow microenvironment simulation to screen leukemia drug. Biomed Mater 2020; 15:035016. [DOI: 10.1088/1748-605x/ab74e2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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12
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Dong R, Liu Y, Mou L, Deng J, Jiang X. Microfluidics-Based Biomaterials and Biodevices. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2019; 31:e1805033. [PMID: 30345586 DOI: 10.1002/adma.201805033] [Citation(s) in RCA: 75] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2018] [Revised: 08/24/2018] [Indexed: 05/25/2023]
Abstract
The rapid development of microfluidics technology has promoted new innovations in materials science, particularly by interacting with biological systems, based on precise manipulation of fluids and cells within microscale confinements. This article reviews the latest advances in microfluidics-based biomaterials and biodevices, highlighting some burgeoning areas such as functional biomaterials, cell manipulations, and flexible biodevices. These areas are interconnected not only in their basic principles, in that they all employ microfluidics to control the makeup and morphology of materials, but also unify at the ultimate goals in human healthcare. The challenges and future development trends in biological application are also presented.
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Affiliation(s)
- Ruihua Dong
- Beijing Engineering Research Center for BioNanotechnology and CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, CAS Center for Excellence in Nanoscience, National Center for NanoScience and Technology, Beijing, 100190, P. R. China
- School of Life Science and Technology, Harbin Institute of Technology, 2 Yikuang Road, Nangang District, Harbin, 150001, P. R. China
| | - Yong Liu
- Beijing Engineering Research Center for BioNanotechnology and CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, CAS Center for Excellence in Nanoscience, National Center for NanoScience and Technology, Beijing, 100190, P. R. China
- University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Lei Mou
- Beijing Engineering Research Center for BioNanotechnology and CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, CAS Center for Excellence in Nanoscience, National Center for NanoScience and Technology, Beijing, 100190, P. R. China
- University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Jinqi Deng
- Beijing Engineering Research Center for BioNanotechnology and CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, CAS Center for Excellence in Nanoscience, National Center for NanoScience and Technology, Beijing, 100190, P. R. China
- University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Xingyu Jiang
- Beijing Engineering Research Center for BioNanotechnology and CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, CAS Center for Excellence in Nanoscience, National Center for NanoScience and Technology, Beijing, 100190, P. R. China
- School of Life Science and Technology, Harbin Institute of Technology, 2 Yikuang Road, Nangang District, Harbin, 150001, P. R. China
- University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
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Li Y, Liao C, Tjong SC. Synthetic Biodegradable Aliphatic Polyester Nanocomposites Reinforced with Nanohydroxyapatite and/or Graphene Oxide for Bone Tissue Engineering Applications. NANOMATERIALS (BASEL, SWITZERLAND) 2019; 9:E590. [PMID: 30974820 PMCID: PMC6523566 DOI: 10.3390/nano9040590] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/28/2019] [Revised: 03/22/2019] [Accepted: 04/03/2019] [Indexed: 12/27/2022]
Abstract
This paper provides review updates on the current development of bionanocomposites with polymeric matrices consisting of synthetic biodegradable aliphatic polyesters reinforced with nanohydroxyaptite (nHA) and/or graphene oxide (GO) nanofillers for bone tissue engineering applications. Biodegradable aliphatic polyesters include poly(lactic acid) (PLA), polycaprolactone (PCL) and copolymers of PLA-PGA (PLGA). Those bionanocomposites have been explored for making 3D porous scaffolds for the repair of bone defects since nHA and GO enhance their bioactivity and biocompatibility by promoting biomineralization, bone cell adhesion, proliferation and differentiation, thus facilitating new bone tissue formation upon implantation. The incorporation of nHA or GO into aliphatic polyester scaffolds also improves their mechanical strength greatly, especially hybrid GO/nHA nanofilllers. Those mechanically strong nanocomposite scaffolds can support and promote cell attachment for tissue growth. Porous scaffolds fabricated from conventional porogen leaching, and thermally induced phase separation have many drawbacks inducing the use of organic solvents, poor control of pore shape and pore interconnectivity, while electrospinning mats exhibit small pores that limit cell infiltration and tissue ingrowth. Recent advancement of 3D additive manufacturing allows the production of aliphatic polyester nanocomposite scaffolds with precisely controlled pore geometries and large pores for the cell attachment, growth, and differentiation in vitro, and the new bone formation in vivo.
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Affiliation(s)
- Yuchao Li
- Department of Materials Science and Engineering, Liaocheng University, Liaocheng 252059, China.
| | - Chengzhu Liao
- Department of Materials Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, China.
| | - Sie Chin Tjong
- Department of Physics, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, China.
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Xu J, Hu X, Jiang S, Wang Y, Parungao R, Zheng S, Nie Y, Liu T, Song K. The Application of Multi-Walled Carbon Nanotubes in Bone Tissue Repair Hybrid Scaffolds and the Effect on Cell Growth In Vitro. Polymers (Basel) 2019; 11:E230. [PMID: 30960214 PMCID: PMC6419040 DOI: 10.3390/polym11020230] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2018] [Revised: 01/28/2019] [Accepted: 01/28/2019] [Indexed: 01/20/2023] Open
Abstract
In this study, composite scaffolds with different multi-walled carbon nanotubes (MWCNTs) content were prepared by freeze-drying. These scaffolds were characterized by scanning electron microscope (SEM), energy dispersive spectroscopy (EDS), Fourier transform infrared spectroscopy (FTIR), porosity, hydrophilicity, mechanical strength, and degradation. The MWCNTs scaffolds were structurally sound and had porous structures that offered ample space for adherence, proliferation, and differentiation of MC3T3-E1 cells, and also supported the transport of nutrients and metabolic waste. CS/Gel/nHAp/0.3%MWCNTs scaffolds provided the best outcomes in terms of scaffold porosity, hydrophilicity, and degradation rate. However, CS/Gel/nHAp/0.6%MWCNTs scaffolds were found to support the optimal growth, homogenous distribution, and biological activity of MC3T3-E1 cells. The excellent properties of CS/Gel/nHAp/0.6%MWCNTs scaffolds for the adhesion, proliferation, and osteogenesis differentiation of MC3T3-E1 cells in vitro highlights the potential applications of this scaffold in bone tissue regeneration.
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Affiliation(s)
- Jie Xu
- State Key Laboratory of Fine Chemicals, Dalian R&D Center for Stem Cell and Tissue Engineering, Dalian University of Technology, Dalian 116024, China.
| | - Xueyan Hu
- State Key Laboratory of Fine Chemicals, Dalian R&D Center for Stem Cell and Tissue Engineering, Dalian University of Technology, Dalian 116024, China.
| | - Siyu Jiang
- State Key Laboratory of Fine Chemicals, Dalian R&D Center for Stem Cell and Tissue Engineering, Dalian University of Technology, Dalian 116024, China.
| | - Yiwei Wang
- Burns Research Group, ANZAC Research Institute, Concord, University of Sydney, Sydney, NSW 2139, Australia.
| | - Roxanne Parungao
- Burns Research Group, ANZAC Research Institute, Concord, University of Sydney, Sydney, NSW 2139, Australia.
| | - Shuangshuang Zheng
- Zhengzhou Institute of Emerging Industrial Technology, Zhengzhou 450000, China.
| | - Yi Nie
- Zhengzhou Institute of Emerging Industrial Technology, Zhengzhou 450000, China.
- Key Laboratory of Green Process and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China.
| | - Tianqing Liu
- State Key Laboratory of Fine Chemicals, Dalian R&D Center for Stem Cell and Tissue Engineering, Dalian University of Technology, Dalian 116024, China.
| | - Kedong Song
- State Key Laboratory of Fine Chemicals, Dalian R&D Center for Stem Cell and Tissue Engineering, Dalian University of Technology, Dalian 116024, China.
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15
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Cai S, Pourdeyhimi B, Loboa EG. Industrial‐scale fabrication of an osteogenic and antibacterial PLA/silver‐loaded calcium phosphate composite with significantly reduced cytotoxicity. J Biomed Mater Res B Appl Biomater 2018; 107:900-910. [DOI: 10.1002/jbm.b.34185] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2018] [Revised: 05/14/2018] [Accepted: 05/18/2018] [Indexed: 12/15/2022]
Affiliation(s)
- Shaobo Cai
- Department of Materials Science and Engineering at North Carolina State University Raleigh North Carolina 27695
- Joint Department of Biomedical Engineering at North Carolina State University and the University of North Carolina at Chapel Hill Raleigh North Carolina 27695
| | - Behnam Pourdeyhimi
- The Nonwovens Institute at North Carolina State University Raleigh North Carolina 27695
| | - Elizabeth G. Loboa
- College of Engineering at University of Missouri Columbia Missouri 65211
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He FL, Li DW, He J, Liu YY, Ahmad F, Liu YL, Deng X, Ye YJ, Yin DC. A novel layer-structured scaffold with large pore sizes suitable for 3D cell culture prepared by near-field electrospinning. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2017. [PMID: 29525092 DOI: 10.1016/j.msec.2017.12.016] [Citation(s) in RCA: 51] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Electrospinning is a powerful method for preparing porous materials that can be applied as biomedical materials for implantation or tissue engineering or as scaffolds for 3D cell culture experiments. However, this technique is limited in practical applications because the pore size of 3D scaffolds directly prepared by conventional electrospinning is usually less than several tens of micrometres, which may not be suitable for 3D cell culture and tissue growth. To allow for satisfactory 3D cell culture and tissue engineering, the pore size of the scaffold should be controllable according to the requirement of the specific cells to be cultured. Here, we show that layer-structured scaffolds with pore sizes larger than 100μm can be obtained by stacking meshes prepared by direct-writing using the near-field electrospinning (NFES) technique. In the study, we prepared composite scaffolds made of polycaprolactone (PCL) and hydroxyapatite (HAp) via the above-mentioned method and tested the effectiveness of the novel scaffold in cell culture using mouse pre-osteoblast cells (MC3T3-E1). The pore size and the degradability of the PCL/HAp scaffolds were characterized. The results showed that the average pore size of the scaffolds was 167μm, which was controllable based on the required application; the degradation rate was controllable depending on the ratio of PCL to HAp. The biocompatibility of the scaffolds in vitro was studied, and it was found that the scaffolds showed no toxicity and that the cells could effectively attach, proliferate, and differentiate in the 3D skeleton of the scaffolds. Our studies showed that a simple modification of the preparation procedure can lead to a new way to fabricate novel layer-structured 3D scaffolds with controllable structures and pore sizes suitable for practical applications in implantation, tissue engineering and 3D cell culture.
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Affiliation(s)
- Feng-Li He
- Institute for Special Environmental Biophysics, Key Laboratory for Space Bioscience and Biotechnology, School of Life Sciences, Northwestern Polytechnical University, Xi'an 710072, PR China
| | - Da-Wei Li
- Institute for Special Environmental Biophysics, Key Laboratory for Space Bioscience and Biotechnology, School of Life Sciences, Northwestern Polytechnical University, Xi'an 710072, PR China
| | - Jin He
- Institute for Special Environmental Biophysics, Key Laboratory for Space Bioscience and Biotechnology, School of Life Sciences, Northwestern Polytechnical University, Xi'an 710072, PR China
| | - Yang-Yang Liu
- Institute for Special Environmental Biophysics, Key Laboratory for Space Bioscience and Biotechnology, School of Life Sciences, Northwestern Polytechnical University, Xi'an 710072, PR China
| | - Fiaz Ahmad
- Institute for Special Environmental Biophysics, Key Laboratory for Space Bioscience and Biotechnology, School of Life Sciences, Northwestern Polytechnical University, Xi'an 710072, PR China
| | - Ya-Li Liu
- Institute for Special Environmental Biophysics, Key Laboratory for Space Bioscience and Biotechnology, School of Life Sciences, Northwestern Polytechnical University, Xi'an 710072, PR China
| | - Xudong Deng
- Institute for Special Environmental Biophysics, Key Laboratory for Space Bioscience and Biotechnology, School of Life Sciences, Northwestern Polytechnical University, Xi'an 710072, PR China
| | - Ya-Jing Ye
- Institute for Special Environmental Biophysics, Key Laboratory for Space Bioscience and Biotechnology, School of Life Sciences, Northwestern Polytechnical University, Xi'an 710072, PR China.
| | - Da-Chuan Yin
- Institute for Special Environmental Biophysics, Key Laboratory for Space Bioscience and Biotechnology, School of Life Sciences, Northwestern Polytechnical University, Xi'an 710072, PR China.
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17
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Xu T, Yang H, Yang D, Yu ZZ. Polylactic Acid Nanofiber Scaffold Decorated with Chitosan Islandlike Topography for Bone Tissue Engineering. ACS APPLIED MATERIALS & INTERFACES 2017; 9:21094-21104. [PMID: 28537074 DOI: 10.1021/acsami.7b01176] [Citation(s) in RCA: 75] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
In this work, a bicomponent scaffold with a core-shell and islandlike structure that combines the respective advantages of polylactic acid (PLA) and chitosan (CS) was prepared via electrospinning accompanied by automatic phase separation and crystallization. The objective of this research was to design nanosized topography with highly bioactive CS onto PLA electrospun fiber surface to improve the cell biocompatibility of the PLA fibrous membrane. The morphology, inner structure, surface composition, crystallinity, and thermodynamic analyses of nanofibers with various PLA/CS ratios were carried out, and the turning mechanism of a core-shell or islandlike topography structure was also speculated. The mineralization of hydroxyapatite and culture results of preosteoblast (MC3T3-E1) cells on the modified scaffolds indicate that the outer CS component and rough nanoscale topography on the surface of the nanofibers balanced the hydrophilicity and hydrophobicity of the fibers, enhanced their mineralization ability, and made them more beneficial for the attachment and growth of cells. Moreover, CS and "islandlike" protrusions on the fiber surface increased the alkaline phosphatase activity of the MC3T3-E1 cells seeded on the fibrous membrane and provided a more appropriate interface for cell adhesion and proliferation. These results illustrate that this kind of PLA/CS membrane has the potential in tissue engineering. More importantly, our study provides a new approach to designing PLA scaffolds, with combined topographic and bioactive modification effects at the interface between cells and materials, for biomedicine.
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Affiliation(s)
- Ting Xu
- State Key Laboratory of Organic-Inorganic Composites, College of Materials Science and Engineering and ‡Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology , Beijing 100029, China
| | - Hongyang Yang
- State Key Laboratory of Organic-Inorganic Composites, College of Materials Science and Engineering and ‡Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology , Beijing 100029, China
| | - Dongzhi Yang
- State Key Laboratory of Organic-Inorganic Composites, College of Materials Science and Engineering and ‡Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology , Beijing 100029, China
| | - Zhong-Zhen Yu
- State Key Laboratory of Organic-Inorganic Composites, College of Materials Science and Engineering and ‡Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology , Beijing 100029, China
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18
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Su CJ, Tu MG, Wei LJ, Hsu TT, Kao CT, Chen TH, Huang TH. Calcium Silicate/Chitosan-Coated Electrospun Poly (Lactic Acid) Fibers for Bone Tissue Engineering. MATERIALS (BASEL, SWITZERLAND) 2017; 10:E501. [PMID: 28772861 PMCID: PMC5459038 DOI: 10.3390/ma10050501] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/27/2017] [Revised: 05/02/2017] [Accepted: 05/02/2017] [Indexed: 01/09/2023]
Abstract
Electrospinning technology allows fabrication of nano- or microfibrous fibers with inorganic and organic matrix and it is widely applied in bone tissue engineering as it allows precise control over the shapes and structures of the fibers. Natural bone has an ordered composition of organic fibers with dispersion of inorganic apatite among them. In this study, poly (lactic acid) (PLA) mats were fabricated with electrospinning and coated with chitosan (CH)/calcium silicate (CS) mixer. The microstructure, chemical component, and contact angle of CS/CH-PLA composites were analyzed by scanning electron microscopy, X-ray diffraction, and Fourier transform infrared spectroscopy. In vitro, various CS/CH-coated PLA mats increased the formation of hydroxyapatite on the specimens' surface when soaked in cell cultured medium. During culture, several biological characteristics of the human mesenchymal stem cells (hMSCs) cultured on CS/CH-PLA groups were promoted as compared to those on pure PLA mat. Increased secretion levels of Collagen I and fibronectin were observed in calcium silicate-powder content. Furthermore, with comparison to PLA mats without CS/CH, CS10 and CS15 mats markedly enhanced the proliferation of hMSCs and their osteogenesis properties, which was characterized by osteogenic-related gene expression. These results clearly demonstrated that the biodegradable and electroactive CS/CH-PLA composite mats are an ideal and suitable candidate for bone tissue engineering.
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Affiliation(s)
- Chu-Jung Su
- Antai Medical Care Cooperation, Antai Tian-Sheng Memorial Hospital, Pingtung City 928, Taiwan.
| | - Ming-Gene Tu
- School of Dentistry, China Medical University, Taichung City 404, Taiwan.
| | - Li-Ju Wei
- 3D Printing Medical Research Center, China Medical University Hospital, China Medical University, Taichung City 404, Taiwan.
| | - Tuan-Ti Hsu
- 3D Printing Medical Research Center, China Medical University Hospital, China Medical University, Taichung City 404, Taiwan.
| | - Chia-Tze Kao
- School of Dentistry, Chung Shan Medical University, Taichung City 404, Taiwan.
- Department of Stomatology, Chung Shan Medical University Hospital, Taichung City 404, Taiwan.
| | - Tsui-Han Chen
- Institute of Oral Science, Chung Shan Medical University, Taichung City 404, Taiwan.
| | - Tsui-Hsien Huang
- School of Dentistry, Chung Shan Medical University, Taichung City 404, Taiwan.
- Department of Stomatology, Chung Shan Medical University Hospital, Taichung City 404, Taiwan.
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19
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Jiang L, Li Y, Xiong C, Su S, Ding H. Preparation and Properties of Bamboo Fiber/Nano-hydroxyapatite/Poly(lactic-co-glycolic) Composite Scaffold for Bone Tissue Engineering. ACS APPLIED MATERIALS & INTERFACES 2017; 9:4890-4897. [PMID: 28084718 DOI: 10.1021/acsami.6b15032] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
In this study, bamboo fiber was first designed to incorporate into nano-hydroxyapatite/poly(lactic-co-glycolic) to obtain a new composite scaffold of bamboo fiber/nano-hydroxyapatite/poly(lactic-co- glycolic) (BF/n-HA/PLGA) by freeze-drying method. The effect of their components and some factors consisting of different freeze temperatures, concentrations, and pore-forming agents on the porous morphology, porosity, and compressive properties of the scaffold were investigated by scanning electron microscope, modified liquid displacement method, and electromechanical universal testing machine. The results indicated that the 5% BF/30% n-HA/PLGA composite scaffold, prepared with 5% (w/v) high concentration and frozen at -20 °C without pore-forming agent, had the best ideal porous structure and porosity as well as compressive properties, which far exceed those of n-HA/PLGA composite scaffold. In addition, the in vitro simulated body fluids soaking and cell culture experiment showed the addition of BF into the scaffold accelerated the BF/n-HA/PLGA composite scaffolds degradation and exhibited good cytocompatibility, including attachment and proliferation. All the results of the study show that BF has improved the properties of n-HA/PLGA composite scaffolds and BF/n-HA/PLGA might have a great potential for bone tissue engineering scaffold.
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Affiliation(s)
- Liuyun Jiang
- Key Laboratory of Chemical Biology & Traditional Chinese Medicine Research (Ministry of Education, China), College of Chemistry and Chemical Engineering, Hunan Normal University , Changsha 410081, People's Republic of China
- National & Local Joint Engineering Laboratory for New Petro-chemical Materials and Fine Utilization of Resources, College of Chemistry and Chemical Engineering, Hunan Normal University , Changsha 410081, People's Republic of China
| | - Ye Li
- Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences , Chengdu 610041, China
| | - Chengdong Xiong
- Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences , Chengdu 610041, China
| | - Shengpei Su
- Key Laboratory of Chemical Biology & Traditional Chinese Medicine Research (Ministry of Education, China), College of Chemistry and Chemical Engineering, Hunan Normal University , Changsha 410081, People's Republic of China
- National & Local Joint Engineering Laboratory for New Petro-chemical Materials and Fine Utilization of Resources, College of Chemistry and Chemical Engineering, Hunan Normal University , Changsha 410081, People's Republic of China
| | - Haojie Ding
- Key Laboratory of Chemical Biology & Traditional Chinese Medicine Research (Ministry of Education, China), College of Chemistry and Chemical Engineering, Hunan Normal University , Changsha 410081, People's Republic of China
- National & Local Joint Engineering Laboratory for New Petro-chemical Materials and Fine Utilization of Resources, College of Chemistry and Chemical Engineering, Hunan Normal University , Changsha 410081, People's Republic of China
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20
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Wang D, Xuan L, Zhong H, Gong Y, Shi X, Ye F, Li Y, Jiang Q. Incorporation of well-dispersed calcium phosphate nanoparticles into PLGA electrospun nanofibers to enhance the osteogenic induction potential. RSC Adv 2017. [DOI: 10.1039/c7ra01865g] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
PAA modified Zn-doped HAp-like calcium phosphate (PAA-CaP/Zn) nanoparticles were homogeneously distributed in PLGA electrospun nanofibers, and enhanced the osteogenic differentiation of rADSCs.
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Affiliation(s)
- Dandan Wang
- Department of Biomedical Engineering
- Guangdong Provincial Key Laboratory of Sensor Technology and Biomedical Instrument
- School of Engineering
- Sun Yat-sen University
- Guangzhou
| | - Liuyang Xuan
- Department of Biomedical Engineering
- Guangdong Provincial Key Laboratory of Sensor Technology and Biomedical Instrument
- School of Engineering
- Sun Yat-sen University
- Guangzhou
| | - Huixiang Zhong
- Department of Biomedical Engineering
- Guangdong Provincial Key Laboratory of Sensor Technology and Biomedical Instrument
- School of Engineering
- Sun Yat-sen University
- Guangzhou
| | - Yihong Gong
- Department of Biomedical Engineering
- Guangdong Provincial Key Laboratory of Sensor Technology and Biomedical Instrument
- School of Engineering
- Sun Yat-sen University
- Guangzhou
| | - Xuetao Shi
- School of Materials Science and Engineering
- South China University of Technology
- Guangzhou
- P. R. China
| | - Feng Ye
- Key Laboratory of Molecular Biology for Infectious Diseases
- Ministry of Education of China
- The Second Affiliated Hospital
- Chongqing Medical University
- Chongqing
| | - Yan Li
- Department of Biomedical Engineering
- Guangdong Provincial Key Laboratory of Sensor Technology and Biomedical Instrument
- School of Engineering
- Sun Yat-sen University
- Guangzhou
| | - Qing Jiang
- Department of Biomedical Engineering
- Guangdong Provincial Key Laboratory of Sensor Technology and Biomedical Instrument
- School of Engineering
- Sun Yat-sen University
- Guangzhou
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21
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Zhang XR, Hu XQ, Jia XL, Yang LK, Meng QY, Shi YY, Zhang ZZ, Cai Q, Ao YF, Yang XP. Cell studies of hybridized carbon nanofibers containing bioactive glass nanoparticles using bone mesenchymal stromal cells. Sci Rep 2016; 6:38685. [PMID: 27924854 PMCID: PMC5141487 DOI: 10.1038/srep38685] [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: 05/04/2016] [Accepted: 11/14/2016] [Indexed: 02/08/2023] Open
Abstract
Bone regeneration required suitable scaffolding materials to support the proliferation and osteogenic differentiation of bone-related cells. In this study, a kind of hybridized nanofibrous scaffold material (CNF/BG) was prepared by incorporating bioactive glass (BG) nanoparticles into carbon nanofibers (CNF) via the combination of BG sol-gel and polyacrylonitrile (PAN) electrospinning, followed by carbonization. Three types (49 s, 68 s and 86 s) of BG nanoparticles were incorporated. To understand the mechanism of CNF/BG hybrids exerting osteogenic effects, bone marrow mesenchymal stromal cells (BMSCs) were cultured directly on these hybrids (contact culture) or cultured in transwell chambers in the presence of these materials (non-contact culture). The contributions of ion release and contact effect on cell proliferation and osteogenic differentiation were able to be correlated. It was found that the ionic dissolution products had limited effect on cell proliferation, while they were able to enhance osteogenic differentiation of BMSCs in comparison with pure CNF. Differently, the proliferation and osteogenic differentiation were both significantly promoted in the contact culture. In both cases, CNF/BG(68 s) showed the strongest ability in influencing cell behaviors due to its fastest release rate of soluble silicium-relating ions. The synergistic effect of CNF and BG would make CNF/BG hybrids promising substrates for bone repairing.
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Affiliation(s)
- Xiu-Rui Zhang
- State Key Laboratory of Organic-Inorganic Composites; Beijing Laboratory of Biomedical Materials; Beijing University of Chemical Technology, Beijing 100029, P. R. China
| | - Xiao-Qing Hu
- Institute of Sports Medicine, Beijing Key Laboratory of Sports Injury, Peking University Third Hospital, Beijing 100191, P. R. China
| | - Xiao-Long Jia
- State Key Laboratory of Organic-Inorganic Composites; Beijing Laboratory of Biomedical Materials; Beijing University of Chemical Technology, Beijing 100029, P. R. China
| | - Li-Ka Yang
- State Key Laboratory of Organic-Inorganic Composites; Beijing Laboratory of Biomedical Materials; Beijing University of Chemical Technology, Beijing 100029, P. R. China
| | - Qing-Yang Meng
- Institute of Sports Medicine, Beijing Key Laboratory of Sports Injury, Peking University Third Hospital, Beijing 100191, P. R. China
| | - Yuan-Yuan Shi
- Institute of Sports Medicine, Beijing Key Laboratory of Sports Injury, Peking University Third Hospital, Beijing 100191, P. R. China
| | - Zheng-Zheng Zhang
- Institute of Sports Medicine, Beijing Key Laboratory of Sports Injury, Peking University Third Hospital, Beijing 100191, P. R. China
| | - Qing Cai
- State Key Laboratory of Organic-Inorganic Composites; Beijing Laboratory of Biomedical Materials; Beijing University of Chemical Technology, Beijing 100029, P. R. China
| | - Yin-Fang Ao
- Institute of Sports Medicine, Beijing Key Laboratory of Sports Injury, Peking University Third Hospital, Beijing 100191, P. R. China
| | - Xiao-Ping Yang
- State Key Laboratory of Organic-Inorganic Composites; Beijing Laboratory of Biomedical Materials; Beijing University of Chemical Technology, Beijing 100029, P. R. China
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22
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Shao W, He J, Wang Q, Cui S, Ding B. Biomineralized Poly(l-lactic-co-glycolic acid)/Graphene Oxide/Tussah Silk Fibroin Nanofiber Scaffolds with Multiple Orthogonal Layers Enhance Osteoblastic Differentiation of Mesenchymal Stem Cells. ACS Biomater Sci Eng 2016; 3:1370-1380. [DOI: 10.1021/acsbiomaterials.6b00533] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Weili Shao
- Henan
Provincial Key Laboratory of Functional Textile Materials, Zhongyuan University of Technology, 450007 Zhengzhou, China
- Collaborative Innovation Center of Textile and Garment Industry, Henan Province, Zhengzhou 450007, China
| | - Jianxin He
- Henan
Provincial Key Laboratory of Functional Textile Materials, Zhongyuan University of Technology, 450007 Zhengzhou, China
- Collaborative Innovation Center of Textile and Garment Industry, Henan Province, Zhengzhou 450007, China
| | - Qian Wang
- Henan
Provincial Key Laboratory of Functional Textile Materials, Zhongyuan University of Technology, 450007 Zhengzhou, China
- Collaborative Innovation Center of Textile and Garment Industry, Henan Province, Zhengzhou 450007, China
| | - Shizhong Cui
- Henan
Provincial Key Laboratory of Functional Textile Materials, Zhongyuan University of Technology, 450007 Zhengzhou, China
- Collaborative Innovation Center of Textile and Garment Industry, Henan Province, Zhengzhou 450007, China
| | - Bin Ding
- Henan
Provincial Key Laboratory of Functional Textile Materials, Zhongyuan University of Technology, 450007 Zhengzhou, China
- Collaborative Innovation Center of Textile and Garment Industry, Henan Province, Zhengzhou 450007, China
- Nanomaterials
Research Center, Modern Textile Institute, Donghua University, Shanghai 200051, China
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23
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Cunniffe GM, Curtin CM, Thompson EM, Dickson GR, O'Brien FJ. Content-Dependent Osteogenic Response of Nanohydroxyapatite: An in Vitro and in Vivo Assessment within Collagen-Based Scaffolds. ACS APPLIED MATERIALS & INTERFACES 2016; 8:23477-23488. [PMID: 27537605 DOI: 10.1021/acsami.6b06596] [Citation(s) in RCA: 60] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The use of collagen-based scaffolds in orthopedic applications has been limited due to poor mechanical properties, but this may be overcome by the introduction of a stiffer supporting phase. Thus, we developed a synthesis technique to produce nonaggregating, stable nanohydroxyapatite (nHA) particles, permitting the fabrication of biomimetic-inspired scaffolds through the combination of nanosized HA with collagen, as found in native bone. This study evaluates the mechanical and biological impact of incorporating increasing concentrations of these nanoparticles into porous collagen scaffolds (1:1 and 5:1 weight ratios of nHA/collagen). Mechanical assessment demonstrated that increasing nHA incorporation correlated with increasing Young's moduli, which could be further amplified using cross-linking treatments. Typically, the porosity of a scaffold is sacrificed to produce a stiffer material; however, through the use of nanosized particles the inclusion of up to 5:1 nHA/collagen content still preserved the high 99% porosity of the composite scaffold, allowing for maximum cell infiltration. Moreover, increasing nHA presence induced significant bioactive responses, achieving superior cellular attachment and enhanced osteogenesis, promoting earlier expression of bone markers and cell-mediated mineralization versus nHA-free collagen controls. Interestingly, these content-dependent results observed in vitro did not directly translate in vivo. Instead, similar levels of bone formation were achieved within critical-sized rat calvarial defects, independent of nHA content, following acellular implantation. The addition of nHA, both 1:1 and 5:1, induced significantly higher levels of mineralization and de novo bone ingrowth versus collagen controls as demonstrated by microcomputed tomography, histological, and histomorphometric analyses. Ultimately, these results demonstrate the immense osteoinductivity of nonaggregated nanoparticles of HA incorporated into collagen-composite scaffolds and emphasize the importance of in vivo-based evaluation of therapies intended for clinical use.
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Affiliation(s)
- Gráinne M Cunniffe
- Trinity Centre for Bioengineering, Trinity College Dublin , Dublin 2, Ireland
- Advanced Materials and BioEngineering Research Centre, Royal College of Surgeons in Ireland & Trinity College Dublin , Dublin 2, Ireland
| | - Caroline M Curtin
- Trinity Centre for Bioengineering, Trinity College Dublin , Dublin 2, Ireland
- Advanced Materials and BioEngineering Research Centre, Royal College of Surgeons in Ireland & Trinity College Dublin , Dublin 2, Ireland
- Tissue Engineering Research Group, Department of Anatomy, Royal College of Surgeons in Ireland , 123 St. Stephens Green, Dublin 2, Ireland
| | - Emmet M Thompson
- Trinity Centre for Bioengineering, Trinity College Dublin , Dublin 2, Ireland
- Advanced Materials and BioEngineering Research Centre, Royal College of Surgeons in Ireland & Trinity College Dublin , Dublin 2, Ireland
- Tissue Engineering Research Group, Department of Anatomy, Royal College of Surgeons in Ireland , 123 St. Stephens Green, Dublin 2, Ireland
| | - Glenn R Dickson
- Tissue Engineering Research Group, Department of Anatomy, Royal College of Surgeons in Ireland , 123 St. Stephens Green, Dublin 2, Ireland
| | - Fergal J O'Brien
- Trinity Centre for Bioengineering, Trinity College Dublin , Dublin 2, Ireland
- Advanced Materials and BioEngineering Research Centre, Royal College of Surgeons in Ireland & Trinity College Dublin , Dublin 2, Ireland
- Tissue Engineering Research Group, Department of Anatomy, Royal College of Surgeons in Ireland , 123 St. Stephens Green, Dublin 2, Ireland
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24
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Shao W, He J, Sang F, Wang Q, Chen L, Cui S, Ding B. Enhanced bone formation in electrospun poly(l-lactic-co-glycolic acid)–tussah silk fibroin ultrafine nanofiber scaffolds incorporated with graphene oxide. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2016; 62:823-34. [DOI: 10.1016/j.msec.2016.01.078] [Citation(s) in RCA: 85] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/20/2015] [Revised: 01/22/2016] [Accepted: 01/27/2016] [Indexed: 11/25/2022]
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25
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Zhang C, Cao M, Lan J, Wei P, Cai Q, Yang X. Regulating proliferation and differentiation of osteoblasts on poly(l-lactide)/gelatin composite nanofibers via timed biomineralization. J Biomed Mater Res A 2016; 104:1968-80. [DOI: 10.1002/jbm.a.35728] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2016] [Revised: 03/17/2016] [Accepted: 03/24/2016] [Indexed: 12/21/2022]
Affiliation(s)
- Caijin Zhang
- State Key Laboratory of Organic-Inorganic Composites, College of Materials Science and Engineering, Beijing University of Chemical Technology; Beijing 100029 People's Republic of China
| | - Man Cao
- State Key Laboratory of Organic-Inorganic Composites, College of Materials Science and Engineering, Beijing University of Chemical Technology; Beijing 100029 People's Republic of China
| | - Jinle Lan
- State Key Laboratory of Organic-Inorganic Composites, College of Materials Science and Engineering, Beijing University of Chemical Technology; Beijing 100029 People's Republic of China
| | - Pengfei Wei
- State Key Laboratory of Organic-Inorganic Composites, College of Materials Science and Engineering, Beijing University of Chemical Technology; Beijing 100029 People's Republic of China
| | - Qing Cai
- State Key Laboratory of Organic-Inorganic Composites, College of Materials Science and Engineering, Beijing University of Chemical Technology; Beijing 100029 People's Republic of China
- Beijing Laboratory of Biomedical Materials, College of Materials Science and Engineering, Beijing University of Chemical Technology; Beijing 100029 People's Republic of China
| | - Xiaoping Yang
- State Key Laboratory of Organic-Inorganic Composites, College of Materials Science and Engineering, Beijing University of Chemical Technology; Beijing 100029 People's Republic of China
- Beijing Laboratory of Biomedical Materials, College of Materials Science and Engineering, Beijing University of Chemical Technology; Beijing 100029 People's Republic of China
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26
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Abitbol T, Rivkin A, Cao Y, Nevo Y, Abraham E, Ben-Shalom T, Lapidot S, Shoseyov O. Nanocellulose, a tiny fiber with huge applications. Curr Opin Biotechnol 2016; 39:76-88. [PMID: 26930621 DOI: 10.1016/j.copbio.2016.01.002] [Citation(s) in RCA: 345] [Impact Index Per Article: 43.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2015] [Revised: 01/03/2016] [Accepted: 01/05/2016] [Indexed: 12/31/2022]
Abstract
Nanocellulose is of increasing interest for a range of applications relevant to the fields of material science and biomedical engineering due to its renewable nature, anisotropic shape, excellent mechanical properties, good biocompatibility, tailorable surface chemistry, and interesting optical properties. We discuss the main areas of nanocellulose research: photonics, films and foams, surface modifications, nanocomposites, and medical devices. These tiny nanocellulose fibers have huge potential in many applications, from flexible optoelectronics to scaffolds for tissue regeneration. We hope to impart the readers with some of the excitement that currently surrounds nanocellulose research, which arises from the green nature of the particles, their fascinating physical and chemical properties, and the diversity of applications that can be impacted by this material.
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Affiliation(s)
- Tiffany Abitbol
- Robert H. Smith Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem, Rehovot 76100, Israel
| | - Amit Rivkin
- Robert H. Smith Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem, Rehovot 76100, Israel
| | - Yifeng Cao
- Robert H. Smith Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem, Rehovot 76100, Israel
| | - Yuval Nevo
- Robert H. Smith Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem, Rehovot 76100, Israel
| | - Eldho Abraham
- Robert H. Smith Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem, Rehovot 76100, Israel
| | - Tal Ben-Shalom
- Robert H. Smith Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem, Rehovot 76100, Israel
| | | | - Oded Shoseyov
- Robert H. Smith Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem, Rehovot 76100, Israel.
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27
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Fabrication of functional PLGA-based electrospun scaffolds and their applications in biomedical engineering. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2016; 59:1181-1194. [DOI: 10.1016/j.msec.2015.11.026] [Citation(s) in RCA: 137] [Impact Index Per Article: 17.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/01/2015] [Revised: 10/22/2015] [Accepted: 11/09/2015] [Indexed: 12/17/2022]
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28
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Shimoda A, Chen Y, Akiyoshi K. Nanogel containing electrospun nanofibers as a platform for stable loading of proteins. RSC Adv 2016. [DOI: 10.1039/c6ra05997j] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
We designed polysaccharide nanogel-containing nanofibers by electrospinning. This system have a great potential for protein delivery systems.
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Affiliation(s)
- Asako Shimoda
- Department of Polymer Chemistry
- Graduate School of Engineering
- Kyoto University
- Kyoto 615-8510
- Japan
| | - Yong Chen
- Ecole Normale Supérieure
- 75005 Paris
- France
- Institute for Integrated Cell-Material Sciences
- Kyoto University
| | - Kazunari Akiyoshi
- Department of Polymer Chemistry
- Graduate School of Engineering
- Kyoto University
- Kyoto 615-8510
- Japan
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29
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Osteogenesis of human adipose-derived stem cells on poly(dopamine)-coated electrospun poly(lactic acid) fiber mats. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2015; 58:254-63. [PMID: 26478309 DOI: 10.1016/j.msec.2015.08.009] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/07/2015] [Revised: 07/15/2015] [Accepted: 08/08/2015] [Indexed: 12/25/2022]
Abstract
Electrospinning is a versatile technique to generate large quantities of micro- or nano-fibers from a wide variety of shapes and sizes of polymer. The aim of this study is to develop functionalized electrospun nano-fibers and use a mussel-inspired surface coating to regulate adhesion, proliferation and differentiation of human adipose-derived stem cells (hADSCs). We prepared poly(lactic acid) (PLA) fibers coated with polydopamine (PDA). The morphology, chemical composition, and surface properties of PDA/PLA were characterized by SEM and XPS. PDA/PLA modulated hADSCs' responses in several ways. Firstly, adhesion and proliferation of hADSCs cultured on PDA/PLA were significantly enhanced relative to those on PLA. Increased focal adhesion kinase (FAK) and collagen I levels and enhanced cell attachment and cell cycle progression were observed upon an increase in PDA content. In addition, the ALP activity and osteocalcin of hADSCs cultured on PDA/PLA were significantly higher than seen in those cultured on a pure PLA mat. Moreover, hADSCs cultured on PDA/PLA showed up-regulation of the ang-1 and vWF proteins associated with angiogenesis differentiation. Our results demonstrate that the bio-inspired coating synthetic degradable PLA polymer can be used as a simple technique to render the surfaces of synthetic biodegradable fibers, thus enabling them to direct the specific responses of hADSCs.
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30
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Li M, Wang S, Jiang J, Sun J, Li Y, Huang D, Long YZ, Zheng W, Chen S, Jiang X. Surface modification of nano-silica on the ligament advanced reinforcement system for accelerated bone formation: primary human osteoblasts testing in vitro and animal testing in vivo. NANOSCALE 2015; 7:8071-8075. [PMID: 25872493 DOI: 10.1039/c5nr01439e] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
The Ligament Advanced Reinforcement System (LARS) has been considered as a promising graft for ligament reconstruction. To improve its biocompatibility and effectiveness on new bone formation, we modified the surface of a polyethylene terephthalate (PET) ligament with nanoscale silica using atom transfer radical polymerization (ATRP) and silica polymerization. The modified ligament is tested by both in vitro and in vivo experiments. Human osteoblast testing in vitro exhibits an ∼21% higher value in cell viability for silica-modified grafts compared with original grafts. Animal testing in vivo shows that there is new formed bone in the case of a nanoscale silica-coated ligament. These results demonstrate that our approach for nanoscale silica surface modification on LARS could be potentially applied for ligament reconstruction.
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Affiliation(s)
- Mengmeng Li
- Beijing Engineering Research Center for BioNanotechnology & CAS Key Laboratory for Biological Effects of Nanomaterials and Nanosafety, National Center for Nanoscience and Technology, Beijing 100190, P. R. China.
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31
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Shen H, Niu Y, Hu X, Yang F, Wang S, Wu D. A biomimetic 3D microtubule-orientated poly(lactide-co-glycolide) scaffold with interconnected pores for tissue engineering. J Mater Chem B 2015; 3:4417-4425. [PMID: 32262785 DOI: 10.1039/c5tb00167f] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
An ideal tissue engineering scaffold should imitate physical and biochemical cues of natural extracellular matrix and have interconnected porous structures with high porosity to provide adequate space for cell seeding, growth and proliferation, as well as nutrient delivery and metabolized product elimination. In this study, we examined the feasibility of fabricating microtubule-orientated poly(lactide-co-glycolide) (PLGA) scaffolds with interconnected pores (denoted as MOIP-PLGA) by an improved thermal-induced phase separation technique. We successfully constructed MOIP-PLGA using 1,4-dioxane as the first solvent and benzene or water with lower freezing point as the second solvent. Especially, when water was used, the MOIP-PLGA had higher porosity and it could guide rabbit aortic smooth muscle cells (SMCs) to better grow along the microtubule direction of the scaffold. Comparing with microtubule-orientated scaffold without interconnected pores (denoted as MONIP-PLGA), the proliferation and viability of SMCs cultured on MOIP-PLGA were higher. Moreover, basic fibroblast growth factor could be effectively bound on MOIP-PLGA by a plasma treatment technique and the growth factor could be slowly released in vitro, maintaining bioactivity.
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Affiliation(s)
- Hong Shen
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Polymer Physics and Chemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China.
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32
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Biomimetic approaches in bone tissue engineering: Integrating biological and physicomechanical strategies. Adv Drug Deliv Rev 2015; 84:1-29. [PMID: 25236302 DOI: 10.1016/j.addr.2014.09.005] [Citation(s) in RCA: 279] [Impact Index Per Article: 31.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2014] [Revised: 09/01/2014] [Accepted: 09/05/2014] [Indexed: 02/06/2023]
Abstract
The development of responsive biomaterials capable of demonstrating modulated function in response to dynamic physiological and mechanical changes in vivo remains an important challenge in bone tissue engineering. To achieve long-term repair and good clinical outcomes, biologically responsive approaches that focus on repair and reconstitution of tissue structure and function through drug release, receptor recognition, environmental responsiveness and tuned biodegradability are required. Traditional orthopedic materials lack biomimicry, and mismatches in tissue morphology, or chemical and mechanical properties ultimately accelerate device failure. Multiple stimuli have been proposed as principal contributors or mediators of cell activity and bone tissue formation, including physical (substrate topography, stiffness, shear stress and electrical forces) and biochemical factors (growth factors, genes or proteins). However, optimal solutions to bone regeneration remain elusive. This review will focus on biological and physicomechanical considerations currently being explored in bone tissue engineering.
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33
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Jing X, Mi HY, Wang XC, Peng XF, Turng LS. Shish-kebab-structured poly(ε-caprolactone) nanofibers hierarchically decorated with chitosan-poly(ε-caprolactone) copolymers for bone tissue engineering. ACS APPLIED MATERIALS & INTERFACES 2015; 7:6955-65. [PMID: 25761418 DOI: 10.1021/acsami.5b00900] [Citation(s) in RCA: 92] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
In this work, scaffolds with a shish-kebab (SK) structure formed by poly(ε-caprolactone) (PCL) nanofibers and chitosan-PCL (CS-PCL) copolymers were prepared via electrospinning and subsequent crystallization for bone tissue engineering applications. The aim of this study was to introduce nanosized topography and the high biocompatibility of chitosan onto PCL nanofibers to enhance cell affinity to PCL scaffolds. CS-PCL copolymers with various ratios were synthesized, and then spontaneously crystallized as kebabs onto the electrospun PCL fibers, which acted as shishes. Scanning electron microscopy (SEM) results demonstrated that the copolymer with PCL to chitosan ratio of 8.8 could hierarchically decorate the PCL nanofibers and formed well-shaped kebabs on the PCL nanofiber surface. Water contact angle tests and biomimetic activity experiments revealed that the shish-kebab scaffolds with CS-PCL kebabs (PCL-SK(CS-PCL(8.8))) showed enhanced hydrophilicity and mineralization ability compared with smooth PCL and PCL-SK(PCL) shish-kebab scaffolds. Osteoblast-like MG63 cells cultured on the PCL-SK(CS-PCL(8.8)) scaffolds showed optimizing cell attachment, cell viability, and metabolic activity, demonstrating that this kind of scaffold has potential applications in bone tissue engineering.
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Affiliation(s)
- Xin Jing
- †National Engineering Research Center of Novel Equipment for Polymer Processing, The Key Laboratory for Polymer Processing Engineering of Ministry of Education, South China University of Technology, Guangzhou, 510640, China
- ‡Wisconsin Institute for Discovery, University of Wisconsin-Madison, Madison, Wisconsin 53715, United States
| | - Hao-Yang Mi
- †National Engineering Research Center of Novel Equipment for Polymer Processing, The Key Laboratory for Polymer Processing Engineering of Ministry of Education, South China University of Technology, Guangzhou, 510640, China
- ‡Wisconsin Institute for Discovery, University of Wisconsin-Madison, Madison, Wisconsin 53715, United States
| | - Xin-Chao Wang
- §National Engineering Research Center for Advanced Polymer Processing Technologies, Zhengzhou University, Zhengzhou, 450002, China
| | - Xiang-Fang Peng
- †National Engineering Research Center of Novel Equipment for Polymer Processing, The Key Laboratory for Polymer Processing Engineering of Ministry of Education, South China University of Technology, Guangzhou, 510640, China
| | - Lih-Sheng Turng
- ‡Wisconsin Institute for Discovery, University of Wisconsin-Madison, Madison, Wisconsin 53715, United States
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34
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Hu Y, Gu X, Yang Y, Huang J, Hu M, Chen W, Tong Z, Wang C. Facile fabrication of poly(L-lactic acid)-grafted hydroxyapatite/poly(lactic-co-glycolic acid) scaffolds by Pickering high internal phase emulsion templates. ACS APPLIED MATERIALS & INTERFACES 2014; 6:17166-17175. [PMID: 25243730 DOI: 10.1021/am504877h] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Porous scaffolds consisting of bioactive inorganic nanoparticles and biodegradable polymers have gained much interest in bone tissue engineering. We report here a facile approach to fabricating poly(l-lactic acid)-grafted hydroxyapatite (g-HAp)/poly(lactide-co-glycolide) (PLGA) nanocomposite (NC) porous scaffolds by solvent evaporation of Pickering high internal phase emulsion (HIPE) templates, where g-HAp nanoparticles act as particulate stabilizers. The resultant porous scaffolds exhibit an open and rough pore structure. The pore structure and mechanical properties of the scaffolds can be tuned readily by varying the g-HAp nanoparticle concentration and internal phase volume fraction of the emulsion templates. With increasing the g-HAp concentration or decreasing the internal phase volume fraction, the pore size and the porosity decrease, while the Young's modulus and the compressive stress enhance. Moreover, the in vitro mineralization tests show that the bioactivity of the scaffolds increases with increasing the g-HAp concentration. Furthermore, the anti-inflammatory drug ibuprofen (IBU) is loaded into the scaffolds, and the drug release studies indicate that the loaded-IBU exhibits a sustained release profile. Finally, in vitro cell culture assays prove that the scaffolds are biocompatible because of supporting adhesion, spreading, and proliferation of mouse bone mesenchymal stem cells. All the results indicate that the solvent evaporation based on Pickering HIPE templates is a promising alternative method to fabricate NC porous scaffolds for potential bone tissue engineering applications.
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Affiliation(s)
- Yang Hu
- Research Institute of Materials Science, South China University of Technology , Guangzhou 510640, People's Republic of China
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35
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Ma R, Tang S, Tan H, Qian J, Lin W, Wang Y, Liu C, Wei J, Tang T. Preparation, characterization, in vitro bioactivity, and cellular responses to a polyetheretherketone bioactive composite containing nanocalcium silicate for bone repair. ACS APPLIED MATERIALS & INTERFACES 2014; 6:12214-12225. [PMID: 25013988 DOI: 10.1021/am504409q] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
In this study, a nanocalcium silicate (n-CS)/polyetheretherketone (PEEK) bioactive composite was prepared using a process of compounding and injection-molding. The mechanical properties, hydrophilicity, and in vitro bioactivity of the composite, as well as the cellular responses of MC3T3-E1 cells (attachment, proliferation, spreading, and differentiation) to the composite, were investigated. The results showed that the mechanical properties and hydrophilicity of the composites were significantly improved by the addition of n-CS to PEEK. In addition, an apatite-layer formed on the composite surface after immersion in simulated body fluid (SBF) for 7 days. In cell culture tests, the results revealed that the n-CS/PEEK composite significantly promoted cell attachment, proliferation, and spreading compared with PEEK or ultrahigh molecular weight polyethylene (UHMWPE). Moreover, cells grown on the composite exhibited higher alkaline phosphatase (ALP) activity, more calcium nodule-formation, and higher expression levels of osteogenic differentiation-related genes than cells grown on PEEK or UHMWPE. These results indicated that the incorporation of n-CS to PEEK could greatly improve the bioactivity and biocompatibility of the composite. Thus, the n-CS/PEEK composite may be a promising bone repair material for use in orthopedic clinics.
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Affiliation(s)
- Rui Ma
- Shanghai Key Laboratory of Orthopedic Implants, Department of Orthopedic Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine , Shanghai 200011, China
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36
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Jiang K, Long YZ, Chen ZJ, Liu SL, Huang YY, Jiang X, Huang ZQ. Airflow-directed in situ electrospinning of a medical glue of cyanoacrylate for rapid hemostasis in liver resection. NANOSCALE 2014; 6:7792-8. [PMID: 24839123 DOI: 10.1039/c4nr01412j] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Rapid hemostasis of solitary organs is still a big challenge in surgical procedures or after major trauma in both civilians and on the battlefield. Here, we report the first use of an airflow-directed in situ electrospinning method to precisely and homogeneously deposit a medical glue of n-octyl-2-cyanoacrylate (OCA) ultrathin fibers onto a wound surface to realize rapid hemostasis in dozens of seconds. In vivo and in vitro experiments on pig liver resection demonstrate that the self-assembled electrospun OCA membrane with high strength, good flexibility and integrity is very compact and no fluid seeping is observed even under a pressure of 147 mm Hg. A similar effect has been achieved in an in vivo experiment on pig lung resection. The results provide a very promising alternative for rapid hemostasis of solitary organs as well as other traumas, providing evidence that the postoperative drainage tube may not be always necessary for surgery in the near future.
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Affiliation(s)
- Kai Jiang
- Institute & Hospital of Hepatobiliary Surgery, Key Laboratory of Digital Hepatobiliary Surgery of Chinese PLA, Chinese PLA Medical Academy, Chinese PLA General Hospital, Beijing 100853, P. R. China.
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37
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Wang S, Chen W, He S, Zhao Q, Li X, Sun J, Jiang X. Mesosilica-coated ultrafine fibers for highly efficient laccase encapsulation. NANOSCALE 2014; 6:6468-6472. [PMID: 24821021 DOI: 10.1039/c4nr01166j] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
In this paper, we present a simple but efficient biomimetic method to encapsulate laccase on mesoporous silica-modified electrospun (ES) ultrafine fibers. Because of the mild immobilization conditions (room temperature, aqueous condition), the encapsulated laccase retained a high activity of 94%. Because of the protection from the silica layer, the laccase worked efficiently at 60 °C and retained a long-term activity in the presence of proteinase K. After recycling for 10 times the laccase still preserved 96% of its original reactivity. More remarkably, the immobilized laccase on fibers could completely recover its activity after thermal denature, while the free laccase permanently lost the activity. We also demonstrated that the laccase on silica-coated fibers exhibited an enhanced decolorization capability of Brilliant Blue KN-R (BBKN-R) as compared to the free laccase, showing its great potential for industrial applications.
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Affiliation(s)
- Shiwen Wang
- Key Laboratory of Advanced Technologies of Materials, Ministry of Education of China, School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu 610031, China.
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38
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Loordhuswamy AM, Krishnaswamy VR, Korrapati PS, Thinakaran S, Rengaswami GDV. Fabrication of highly aligned fibrous scaffolds for tissue regeneration by centrifugal spinning technology. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2014; 42:799-807. [PMID: 25063182 DOI: 10.1016/j.msec.2014.06.011] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/19/2013] [Revised: 05/10/2014] [Accepted: 06/09/2014] [Indexed: 01/08/2023]
Abstract
Centrifugal spinning (C-Spin) is an emerging technology which uses centrifugal force to produce ultrafine fibers. Being a voltage free technique it can overcome the limitations of electrospinning. Owing to the unique characteristic features such as high surface area to volume ratio, porosity, mechanical strength and fiber alignment, centrifugal spun (C-spun) fibrous mat has a wide range of scope in various biomedical applications. Higher degree of fiber alignment can be effortlessly achieved by the C-Spin process. In order to prove the versatility of C-Spin system with respect to fiber alignment, Polycaprolactone (PCL) and gelatin were spun taking them as model polymers. The morphological analysis revealed that highly aligned ultrafine fibers with smooth surface are achieved by C-Spinning. Hydrophilicity, porosity and mechanical property results confirm that the C-spun mat is more suitable for tissue engineering applications. In vitro and in vivo experiments proved that the scaffolds are biocompatible and can be efficiently used as a wound dressing material.
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Affiliation(s)
| | | | - Purna Sai Korrapati
- Department of Biomaterials, CSIR-Central Leather Research Institute, Chennai 600020, India
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39
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Multiscale fluid-structure interaction modelling to determine the mechanical stimulation of bone cells in a tissue engineered scaffold. Biomech Model Mechanobiol 2014; 14:231-43. [PMID: 24903125 DOI: 10.1007/s10237-014-0599-z] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2014] [Accepted: 05/22/2014] [Indexed: 10/25/2022]
Abstract
Recent studies have shown that mechanical stimulation, by means of flow perfusion and mechanical compression (or stretching), enhances osteogenic differentiation of mesenchymal stem cells and bone cells within biomaterial scaffolds in vitro. However, the precise mechanisms by which such stimulation enhances bone regeneration is not yet fully understood. Previous computational studies have sought to characterise the mechanical stimulation on cells within biomaterial scaffolds using either computational fluid dynamics or finite element (FE) approaches. However, the physical environment within a scaffold under perfusion is extremely complex and requires a multiscale and multiphysics approach to study the mechanical stimulation of cells. In this study, we seek to determine the mechanical stimulation of osteoblasts seeded in a biomaterial scaffold under flow perfusion and mechanical compression using multiscale modelling by two-way fluid-structure interaction and FE approaches. The mechanical stimulation, in terms of wall shear stress (WSS) and strain in osteoblasts, is quantified at different locations within the scaffold for cells of different attachment morphologies (attached, bridged). The results show that 75.4 % of scaffold surface has a WSS of 0.1-10 mPa, which indicates the likelihood of bone cell differentiation at these locations. For attached and bridged osteoblasts, the maximum strains are 397 and 177,200 με, respectively. Additionally, the results from mechanical compression show that attached cells are more stimulated (maximum strain = 22,600 με) than bridged cells (maximum strain = 10.000 με)Such information is important for understanding the biological response of osteoblasts under in vitro stimulation. Finally, a combination of perfusion and compression of a tissue engineering scaffold is suggested for osteogenic differentiation.
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40
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Jamshidi Adegani F, Langroudi L, Ardeshirylajimi A, Dinarvand P, Dodel M, Doostmohammadi A, Rahimian A, Zohrabi P, Seyedjafari E, Soleimani M. Coating of electrospun poly(lactic-co-glycolic acid) nanofibers with willemite bioceramic: improvement of bone reconstruction in rat model. Cell Biol Int 2014; 38:1271-9. [PMID: 24905891 DOI: 10.1002/cbin.10318] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2014] [Accepted: 05/06/2014] [Indexed: 11/07/2022]
Abstract
We have investigated the combination effects of bioceramics and poly(lactide-co-glycolide) (PLGA) on bone reconstruction in calvarial critical size defects using a rat model. Willemite (Zn2SiO4) ceramics were prepared and coated on the surface of electrospun fabricated scaffolds. After scaffolds and nanoparticles characterization, osteoconductivity of the construct was analyzed using digital mammography, multislice spiral-computed tomography (MSCT) imaging, and histological analysis. Eight weeks after implantation, no sign of inflammation was observed at the site of the osseous defect. The results showed that the ceramics supported bone regeneration and highest bone reconstruction were observed in willemite-coated PLGA. This suggests that electrospun PLGA nanofibers coated with BG are potential candidate implants for bone tissue engineering applications.
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Affiliation(s)
- Fatemeh Jamshidi Adegani
- Department of Molecular Biology and Genetic Engineering, Stem Cell Technology Research Center, Tehran, Iran
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41
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Lu W, Sun J, Jiang X. Recent advances in electrospinning technology and biomedical applications of electrospun fibers. J Mater Chem B 2014; 2:2369-2380. [PMID: 32261409 DOI: 10.1039/c3tb21478h] [Citation(s) in RCA: 97] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Electrospinning technology underwent rapid development in recent years, which can be used for fabricating electrospun fibers with different morphologies and multidimensional structures. These fibers are widely applied in medical diagnosis, tissue engineering, replica molding and other applications. Here we review the recent advances in the electrospinning technology, especially technical progress in fabricating electrospun fibers and assemblies with multidimensional structures, and the biomedical applications of these fibers.
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Affiliation(s)
- Wenjing Lu
- Beijing Engineering Research Center for BioNanotechnology & Key Lab for Biological Effects of Nanomaterials and Nanosafety, National Center for NanoScience and Technology, #11 Beiyitiao, ZhongGuanCun, Beijing, P. R. China.
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42
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Zadpoor AA. Relationship between in vitro apatite-forming ability measured using simulated body fluid and in vivo bioactivity of biomaterials. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2014; 35:134-43. [DOI: 10.1016/j.msec.2013.10.026] [Citation(s) in RCA: 151] [Impact Index Per Article: 15.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/10/2013] [Revised: 10/04/2013] [Accepted: 10/19/2013] [Indexed: 02/04/2023]
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43
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He Y, Wang X, Chen L, Ding J. Preparation of hydroxyapatite micropatterns for the study of cell–biomaterial interactions. J Mater Chem B 2014; 2:2220-2227. [DOI: 10.1039/c4tb00146j] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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44
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Jiang H, Zuo Y, Zou Q, Wang H, Du J, Li Y, Yang X. Biomimetic spiral-cylindrical scaffold based on hybrid chitosan/cellulose/nano-hydroxyapatite membrane for bone regeneration. ACS APPLIED MATERIALS & INTERFACES 2013; 5:12036-12044. [PMID: 24191736 DOI: 10.1021/am4038432] [Citation(s) in RCA: 61] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Natural bone is a complex material with well-designed architecture. To achieve successful bone integration and regeneration, the constituent and structure of bone-repairing scaffolds need to be functionalized synergistically based on biomimetics. In this study, a hybrid membrane composed of chitosan (CS), sodium carboxymethyl cellulose (CMC), and nano-hydroxyapatite (n-HA) was curled in a concentric manner to generate an anisotropic spiral-cylindrical scaffold, with compositional and structural properties mimicking natural bone. After optimization in terms of morphology, hydrophilicity, swelling and degradation pattern, the osteoblast cells seeded on the membrane of 60 wt% n-HA exhibited the highest cell viability and osteocalcin expression. In vivo osteogenesis assessment revealed that the spiral-cylindrical architecture played a dominant role in bone regeneration and osseointegration. Newly formed bone tissue grew through the longitudinal direction of the cylinder-shaped scaffold bridging both ends of the defect, bone marrow penetrated the entire scaffold and formed a medullary cavity in the center of the spiral cylinder. This study for the first time demonstrates that the spiral-cylindrical scaffold can promote complete infiltration of bone tissues in vivo, leading to successful osteointegration and functional reconstruction of bone defects. It suggests that the biomimetic spiral-cylindrical scaffold could be a promising candidate for bone regeneration applications.
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Affiliation(s)
- Hong Jiang
- Department of Biomedical Materials Science, School of Biomedical Engineering, Third Military Medical University , Chongqing 400038, P. R. China
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