51
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Lee JY, Chung WJ, Kim G. A mechanically improved virus-based hybrid scaffold for bone tissue regeneration. RSC Adv 2016. [DOI: 10.1039/c6ra07054j] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A hybrid scaffold (M13-phage/alginate and PCL) was proposed as a biomedical scaffold.
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Affiliation(s)
- Jae Yoon Lee
- Department of Biomechatronic Engineering
- College of Biotechnology and Bioengineering
- Sungkyunkwan University
- Suwon 440-746
- Republic of Korea
| | - Woo-Jae Chung
- Department of Genetic Engineering
- College of Biotechnology and Bioengineering
- Sungkyunkwan University
- Suwon 440-746
- Republic of Korea
| | - GeunHyung Kim
- Department of Biomechatronic Engineering
- College of Biotechnology and Bioengineering
- Sungkyunkwan University
- Suwon 440-746
- Republic of Korea
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52
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Mo Y, Guo R, Liu J, Lan Y, Zhang Y, Xue W, Zhang Y. Preparation and properties of PLGA nanofiber membranes reinforced with cellulose nanocrystals. Colloids Surf B Biointerfaces 2015; 132:177-84. [DOI: 10.1016/j.colsurfb.2015.05.029] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2015] [Revised: 05/13/2015] [Accepted: 05/15/2015] [Indexed: 02/03/2023]
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53
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Bone Scaffold Based on Biopolymer/Carbonate Apatite by Freeze Drying Method: Synthesis, Characterization, and In Vitro Cytotoxicity. ACTA ACUST UNITED AC 2015. [DOI: 10.4028/www.scientific.net/msf.827.81] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The global need of biomaterial products especially in bone clinical application increases every year. The gold methods like autograft and allograft have some limitations in the application such as the availability of donor sites, antigenicity issues, the high cost, etc. To solve the problems, many researches and activities in the field of biomaterial have been conducted continuously in the past decades to develop the proper synthetic materials for bone substitutes which have properties similar to bone tissue. In this research, the synthesis of biocomposite for bone scaffold application prepared by freeze drying method has been done successfully. The materials used are biopolymer (alginate and chitosan) and bioceramics (carbonate apatite) with certain mixing variations. SEM result showed that the pores obtained by freeze drying method can mimic the pores of actual bone thus they will be able to resemble cells microenvironment, enhance interface interaction, and support cell proliferation. The existence of carbonate apatite on the scaffold’s surface can be observed with particle size of 0.05 – 1 μm and has been dispersed evenly. These results are in good agreement with FT-IR analysis that indicates the presence of PO43– functional group on the scaffold at wave numbers 569 and 1041.56 cm–1 and CO32– functional group at wave number 1411.89 cm–1. The in vitro biological evaluation of HeLa cells which exposed to extract solution of scaffold (in some variations of concentration) indicated that the scaffold obtained was not cytotoxic to the HeLa cells.
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54
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Perez RA, Kim HW. Core-shell designed scaffolds for drug delivery and tissue engineering. Acta Biomater 2015; 21:2-19. [PMID: 25792279 DOI: 10.1016/j.actbio.2015.03.013] [Citation(s) in RCA: 123] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2014] [Revised: 03/03/2015] [Accepted: 03/08/2015] [Indexed: 11/19/2022]
Abstract
Scaffolds that secure and deliver therapeutic ingredients like signaling molecules and stem cells hold great promise for drug delivery and tissue engineering. Employing a core-shell design for scaffolds provides a promising solution. Some unique methods, such as co-concentric nozzle extrusion, microfluidics generation, and chemical confinement reactions, have been successful in producing core-shelled nano/microfibers and nano/microspheres. Signaling molecules and drugs, spatially allocated to the core and/or shell part, can be delivered in a controllable and sequential manner for optimal therapeutic effects. Stem cells can be loaded within the core part on-demand, safely protected from the environments, which ultimately affords ex vivo culture and in vivo tissue engineering. The encapsulated cells experience three-dimensional tissue-mimic microenvironments in which therapeutic molecules are secreted to the surrounding tissues through the semi-permeable shell. Tuning the material properties of the core and shell, changing the geometrical parameters, and shaping them into proper forms significantly influence the release behaviors of biomolecules and the fate of the cells. This topical issue highlights the immense usefulness of core-shell designs for the therapeutic actions of scaffolds in the delivery of signaling molecules and stem cells for tissue regeneration and disease treatment.
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Affiliation(s)
- Roman A Perez
- Institute of Tissue Regeneration Engineering (ITREN), Dankook University, Cheonan 330-714, Republic of Korea; Department of Nanobiomedical Science & BK21 PLUS NBM Global Research Center for Regenerative Medicine, Dankook University, Cheonan 330-714, Republic of Korea
| | - Hae-Won Kim
- Institute of Tissue Regeneration Engineering (ITREN), Dankook University, Cheonan 330-714, Republic of Korea; Department of Nanobiomedical Science & BK21 PLUS NBM Global Research Center for Regenerative Medicine, Dankook University, Cheonan 330-714, Republic of Korea; Department of Biomaterials Science, College of Dentistry, Dankook University, Cheonan 330-714, Republic of Korea.
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55
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Mirdailami O, Soleimani M, Dinarvand R, Khoshayand MR, Norouzi M, Hajarizadeh A, Dodel M, Atyabi F. Controlled release of rhEGF and rhbFGF from electrospun scaffolds for skin regeneration. J Biomed Mater Res A 2015; 103:3374-85. [DOI: 10.1002/jbm.a.35479] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2015] [Revised: 03/28/2015] [Accepted: 04/07/2015] [Indexed: 12/28/2022]
Affiliation(s)
- Omolbanin Mirdailami
- Department of Pharmaceutics; Faculty of Pharmacy, Tehran University of Medical Sciences; Tehran Iran
- Nanotechnology Research Centre, Faculty of Pharmacy, Tehran University of Medical Sciences; Tehran Iran
| | - Masoud Soleimani
- Department of Hematology; Faculty of Medical Sciences, University of Tarbiat Modares; Tehran Iran
| | - Rassoul Dinarvand
- Department of Pharmaceutics; Faculty of Pharmacy, Tehran University of Medical Sciences; Tehran Iran
- Nanotechnology Research Centre, Faculty of Pharmacy, Tehran University of Medical Sciences; Tehran Iran
| | - Mohammad Reza Khoshayand
- Food and Drug Control Laboratory, Faculty of Pharmacy, Tehran University of Medical Sciences; Tehran Iran
| | - Mohammad Norouzi
- Department of Nanotechnology and Tissue Engineering; Stem Cell Technology Research Center; Tehran Iran
| | - Athena Hajarizadeh
- Department of Molecular Biology and Genetic Engineering; Stem Cell Technology Research Center; Tehran Iran
| | - Masumeh Dodel
- Department of Nanotechnology and Tissue Engineering; Stem Cell Technology Research Center; Tehran Iran
| | - Fatemeh Atyabi
- Department of Pharmaceutics; Faculty of Pharmacy, Tehran University of Medical Sciences; Tehran Iran
- Nanotechnology Research Centre, Faculty of Pharmacy, Tehran University of Medical Sciences; Tehran Iran
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56
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Samal J, Weinandy S, Weinandy A, Helmedag M, Rongen L, Hermanns-Sachweh B, Kundu SC, Jockenhoevel S. Co-Culture of Human Endothelial Cells and Foreskin Fibroblasts on 3D Silk-Fibrin Scaffolds Supports Vascularization. Macromol Biosci 2015; 15:1433-46. [DOI: 10.1002/mabi.201500054] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2015] [Revised: 04/21/2015] [Indexed: 12/27/2022]
Affiliation(s)
- Juhi Samal
- Department of Biotechnology; Indian Institute of Technology; Kharagpur 721 302 India
| | - Stefan Weinandy
- Applied Medical Engineering; UKA, Pauwelsstraße 20 52074 Aachen Germany
| | - Agnieszka Weinandy
- Department of Neurosurgery, Medical Faculty; RWTH Aachen University and JARA-BRAIN Translational Medicine; Pauwelsstraβe 30 52074 Aachen Germany
| | - Marius Helmedag
- Applied Medical Engineering; UKA, Pauwelsstraße 20 52074 Aachen Germany
| | - Lisanne Rongen
- Applied Medical Engineering; UKA, Pauwelsstraße 20 52074 Aachen Germany
| | | | - Subhas C. Kundu
- Department of Biotechnology; Indian Institute of Technology; Kharagpur 721 302 India
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57
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Lim D, Lee E, Kim H, Park S, Baek S, Yoon J. Multi stimuli-responsive hydrogel microfibers containing magnetite nanoparticles prepared using microcapillary devices. SOFT MATTER 2015; 11:1606-1613. [PMID: 25594916 DOI: 10.1039/c4sm02564d] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Extensive research efforts have been devoted to the development of hydrogel microfibers for tissue engineering, because the vascular structure is related to the transport of nutrients and oxygen as well as the control of metabolic and mechanical functions in the human body. Even though stimuli-responsive properties would enhance the potential applicability of hydrogel microfibers for artificial tissue architectures, previous studies of their fabrication have not considered changes in the microfibers in response to external stimuli. In this work, we prepared temperature-responsive poly(N-isopropylacrylamide) (PNIPAm) microfibers with controlled shapes and sizes by the in situ photo-polymerization of aqueous monomers loaded in calcium alginate templates generated from microcapillary devices. We found that the shape and size of the hydrogel microfibers could be controlled by adjusting the injection positions of the solutions and varying the diameters of the inner capillary, respectively. We further fabricated light-responsive materials by incorporating photothermal magnetite nanoparticles (MNPs) within the temperature-responsive PNIPAm hydrogel microfibers. Because the MNPs incorporated into the PNIPAm microfibers generated heat upon the absorption of visible light, we could demonstrate volume changes in the microfibers triggered by both visible light irradiation and temperature.
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Affiliation(s)
- Daeun Lim
- Department of Chemistry, Dong-A University, 37 Nakdong-Daero 550beon-gil, Saha-gu, Busan 604-714, Republic of Korea.
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58
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Venkatesan J, Lowe B, Anil S, Manivasagan P, Kheraif AAA, Kang KH, Kim SK. Seaweed polysaccharides and their potential biomedical applications. STARCH-STARKE 2015. [DOI: 10.1002/star.201400127] [Citation(s) in RCA: 96] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
| | - Baboucarr Lowe
- Department of Marine Bio Convergence Science; Pukyong National University; Busan South Korea
| | - Sukumaran Anil
- Dental Biomaterials Research, Department of Periodontics and Community Dentistry; College of Dentistry; King Saud University; Riyadh Saudi Arabia
| | | | - Abdulaziz A Al Kheraif
- Dental Biomaterials Research, Dental Health Department; College of Applied Medical Sciences; King Saud University; Riyadh Saudi Arabia
| | - Kyong-Hwa Kang
- Marine Bioprocess Research Center; Pukyong National University; Busan South Korea
| | - Se-Kwon Kim
- Marine Bioprocess Research Center; Pukyong National University; Busan South Korea
- Department of Marine Bio Convergence Science; Pukyong National University; Busan South Korea
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59
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Xiao S, Dan W, Dan N. Insights into the interactions between porcine collagen and a Zr–Al–Ti metal complex. RSC Adv 2015. [DOI: 10.1039/c5ra14687a] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Porcine acelluar dermal matrix (pADM), known as pure collagen with a three dimensional structure, was used to explore the interactions between porcine collagen and a metal complex in this study.
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Affiliation(s)
- Shiwei Xiao
- Department of Biomass Chemistry and Engineering
- Sichuan University
- Chengdu
- China
- Research Center of Biomedical Engineering
| | - Weihua Dan
- Department of Biomass Chemistry and Engineering
- Sichuan University
- Chengdu
- China
- Research Center of Biomedical Engineering
| | - Nianhua Dan
- Department of Biomass Chemistry and Engineering
- Sichuan University
- Chengdu
- China
- Research Center of Biomedical Engineering
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60
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Rossow T, Seiffert S. Supramolecular Polymer Networks: Preparation, Properties, and Potential. SUPRAMOLECULAR POLYMER NETWORKS AND GELS 2015. [DOI: 10.1007/978-3-319-15404-6_1] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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61
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Barui A, Khare R, Dhara S, Banerjee P, Chatterjee J. Ex vivo bio-compatibility of honey-alginate fibrous matrix for HaCaT and 3T3 with prime molecular expressions. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2014; 25:2659-2667. [PMID: 22042457 DOI: 10.1007/s10856-011-4456-7] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/27/2010] [Accepted: 10/02/2011] [Indexed: 05/31/2023]
Abstract
Honey's inherent compositional diversity, bio-compatibility and time tested therapeutic efficacy, especially in tissue repair as a topical agent, attract researchers towards harnessing its biomaterial potential particularly in developing matrix for tissue engineering applications. Hence, this study fabricates fibrous mat from optimum honey-alginate formulation and alginate solution using wet spinning technology. The physical and morphological properties of the scaffolds are assessed and finally their comparative biological performances are evaluated through in vitro studies on adherence, viability and prime molecular expression of HaCaT and 3T3 cells. The honey-alginate scaffold demonstrates better performance than that of alginate in terms of cellular adherence, viability and proper expression of cell-cell adhesion molecule (E-cadherin) and prime molecules of extra cellular matrix (Collagen I and III) by HaCaT and 3T3 respectively.
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Affiliation(s)
- Ananya Barui
- School of Medical Science & Technology, IIT Kharagpur, Kharagpur, 721302, India
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62
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Jin G, Li Y, Prabhakaran MP, Tian W, Ramakrishna S. In vitro and in vivo evaluation of the wound healing capability of electrospun gelatin/PLLCL nanofibers. J BIOACT COMPAT POL 2014. [DOI: 10.1177/0883911514553525] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Recent progress in tissue-engineered skin grafts has alleviated the demand for autologous split thickness skin grafts for treatment of large skin wounds. In this study, a series of cost-effective nanofibrous scaffolds aimed at full-thickness wound healing are fabricated by blending gelatin (Gel) with poly(l-lactic acid)-b-poly( ε-caprolactone) (PLLCL) and electrospun to obtain composite Gel/PLLCL nanofibers in four different weight ratios (w/w) of 80:20 [Gel/PLLCL(20)], 70:30 [Gel/PLLCL(30)], 60:40 [Gel/PLLCL(40)], and 50:50 [Gel/PLLCL(50)]. The mechanical properties of these nanofibrous scaffolds were evaluated in both dry and wet conditions, and the Gel/PLLCL(40) retained suitable tensile stress (1.16 ± 0.03 MPa) to be handled even in wet conditions. Moreover, the proliferations of fibroblast cells on Gel/PLLCL(40) were 15%, 7% and 10% higher compared to cell proliferations on Gel/PLLCL(20), Gel/PLLCL(30), and Gel/PLLCL(50), respectively. In vitro results confirmed Gel/PLLCL(40) as the optimized scaffold composition suitable for skin tissue engineering. The healing ability of this scaffold was studied in vivo using mouse models. The Gel/PLLCL(40) greatly accelerated wound closure and regeneration occurring in the first 10 days of implantation compared to the control group. In addition, newly regenerated epidermis was only found in the nanofibrous scaffolds–treated group, and it was comparable to the epidermis of normal skin.
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Affiliation(s)
- Guorui Jin
- Department of Mechanical Engineering, National University of Singapore, Singapore
- Center for Nanofibers and Nanotechnology, E3-05-14, Nanoscience and Nanotechnology Initiative, Faculty of Engineering, National University of Singapore, Singapore
| | - Yong Li
- Bio-X Center, School of Life Science and Technology, Harbin Institute of Technology, Harbin, P.R. China
| | - Molamma P Prabhakaran
- Center for Nanofibers and Nanotechnology, E3-05-14, Nanoscience and Nanotechnology Initiative, Faculty of Engineering, National University of Singapore, Singapore
| | - Weiming Tian
- Bio-X Center, School of Life Science and Technology, Harbin Institute of Technology, Harbin, P.R. China
| | - Seeram Ramakrishna
- Department of Mechanical Engineering, National University of Singapore, Singapore
- Center for Nanofibers and Nanotechnology, E3-05-14, Nanoscience and Nanotechnology Initiative, Faculty of Engineering, National University of Singapore, Singapore
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63
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Mehrban N, Abelardo E, Wasmuth A, Hudson KL, Mullen LM, Thomson AR, Birchall MA, Woolfson DN. Assessing cellular response to functionalized α-helical peptide hydrogels. Adv Healthc Mater 2014; 3:1387-91. [PMID: 24659615 PMCID: PMC4276410 DOI: 10.1002/adhm.201400065] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2014] [Indexed: 01/18/2023]
Abstract
α-Helical peptide hydrogels are decorated with a cell-binding peptide motif (RGDS), which is shown to promote adhesion, proliferation, and differentiation of PC12 cells. Gel structure and integrity are maintained after functionalization. This opens possibilities for the bottom-up design and engineering of complex functional scaffolds for 2D and 3D cell cultures.
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Affiliation(s)
- Nazia Mehrban
- School of Chemistry, University of Bristol, Cantock's Close, Bristol, BS8 1TS, UK
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64
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Szymanski JM, Feinberg AW. Fabrication of freestanding alginate microfibers and microstructures for tissue engineering applications. Biofabrication 2014; 6:024104. [PMID: 24695323 DOI: 10.1088/1758-5082/6/2/024104] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Natural biopolymers such as alginate have become important materials for a variety of biotechnology applications including drug delivery, cell encapsulation and tissue engineering. This expanding use has spurred the development of new approaches to engineer these materials at the nano- and microscales to better control cell interactions. Here we describe a method to fabricate freestanding alginate-based microfibers and microstructures with tunable geometries down to approximately 3 µm. To do this, a polydimethylsiloxane stamp is used to micromold alginate or alginate-fibrin blends onto a sacrificial layer of thermally-sensitive poly(N-isopropylacrylamide) (PIPAAm). A warm calcium chloride solution is then used to crosslink the alginate and, upon cooling below the lower critical solution temperature (~32 °C), the PIPAAm layer dissolves and releases the alginate or alginate-fibrin as freestanding microfibers and microstructures. Proof-of-concept experiments demonstrate that C2C12 myoblasts seeded onto the alginate-fibrin microfibers polarize along the fiber length forming interconnected cell strands. Thus, we have developed the ability to engineer alginate-based microstructured materials that can selectively bind cells and direct cellular assembly.
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Affiliation(s)
- John M Szymanski
- Department of Biomedical Engineering, Carnegie Mellon University, Pittsburgh, PA 15219, USA
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65
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Jeon H, Kim G. Preparation and characterization of an electrospun polycaprolactone (PCL) fibrous mat and multi-layered PCL scaffolds having a nanosized pattern-surface for tissue regeneration. J Mater Chem B 2014; 2:171-180. [DOI: 10.1039/c3tb21230k] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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66
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Li W, Zhao P, Lin C, Wen X, Katsanevakis E, Gero D, Félix O, Liu Y. Natural polyelectrolyte self-assembled multilayers based on collagen and alginate: stability and cytocompatibility. Biomacromolecules 2013; 14:2647-56. [PMID: 23782041 DOI: 10.1021/bm4005063] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Scientific interest in the self-assembly of collagen composite films has been increasing for their potential application in constructing bioactive materials. Here we report a highly stable and cytocompatible collagen/alginate (COL/ALG) ultrathin film, which was linearly fabricated via a layer-by-layer self-assembled technique. The variation in morphology and thickness of the films in air and in solutions with different pH and ion values were tested by atomic force microscopy. Results showed that the solutions with high pH values or solutions that contained electrolytes would disintegrate the film, while films with that were cross-linked for a long time prevented the dissolution and contributed to stability maintenance of the films. Interestingly, the COL/ALG coating not only improved the adhesion and proliferation of the human periodontal ligament cells, but also modified the morphology and migration of cells on the surface of glass and poly-L-lactic acid (PLA) electrospun scaffolds. In conclusion, the COL/ALG ultrathin films were highly stable and cytocompatible and could be easily fabricated by the cost-effective self-assembled technique presented. The findings of this study have the potential to play an important role in the surface modification of biomaterials.
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Affiliation(s)
- Wenxing Li
- Department of Orthodontics, School of Stomatology, Tongji University, Shanghai, China
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67
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Jana S, Cooper A, Zhang M. Chitosan scaffolds with unidirectional microtubular pores for large skeletal myotube generation. Adv Healthc Mater 2013. [PMID: 23184507 DOI: 10.1002/adhm.201200177] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Soumen Jana
- Department of Materials Science and Engineering, University of Washington, Seattle, WA 98195, USA
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68
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Khan F, Ahmad SR. Polysaccharides and Their Derivatives for Versatile Tissue Engineering Application. Macromol Biosci 2013; 13:395-421. [DOI: 10.1002/mabi.201200409] [Citation(s) in RCA: 191] [Impact Index Per Article: 17.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2012] [Revised: 01/06/2013] [Indexed: 12/13/2022]
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69
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70
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Kim Y, Kim G. Collagen/alginate scaffolds comprising core (PCL)–shell (collagen/alginate) struts for hard tissue regeneration: fabrication, characterisation, and cellular activities. J Mater Chem B 2013; 1:3185-3194. [DOI: 10.1039/c3tb20485e] [Citation(s) in RCA: 64] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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71
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Mota C, Puppi D, Chiellini F, Chiellini E. Additive manufacturing techniques for the production of tissue engineering constructs. J Tissue Eng Regen Med 2012; 9:174-90. [PMID: 23172792 DOI: 10.1002/term.1635] [Citation(s) in RCA: 156] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2012] [Revised: 08/02/2012] [Accepted: 09/27/2012] [Indexed: 02/06/2023]
Abstract
'Additive manufacturing' (AM) refers to a class of manufacturing processes based on the building of a solid object from three-dimensional (3D) model data by joining materials, usually layer upon layer. Among the vast array of techniques developed for the production of tissue-engineering (TE) scaffolds, AM techniques are gaining great interest for their suitability in achieving complex shapes and microstructures with a high degree of automation, good accuracy and reproducibility. In addition, the possibility of rapidly producing tissue-engineered constructs meeting patient's specific requirements, in terms of tissue defect size and geometry as well as autologous biological features, makes them a powerful way of enhancing clinical routine procedures. This paper gives an extensive overview of different AM techniques classes (i.e. stereolithography, selective laser sintering, 3D printing, melt-extrusion-based techniques, solution/slurry extrusion-based techniques, and tissue and organ printing) employed for the development of tissue-engineered constructs made of different materials (i.e. polymeric, ceramic and composite, alone or in combination with bioactive agents), by highlighting their principles and technological solutions.
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Affiliation(s)
- Carlos Mota
- Laboratory of Bioactive Polymeric Materials for Biomedical and Environmental Applications (BIOLab), UdR-INSTM, Department of Chemistry and Industrial Chemistry, University of Pisa, San Piero a Grado, (Pi), Italy
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72
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Yan LY, Chen H, Li P, Kim DH, Chan-Park MB. Finely dispersed single-walled carbon nanotubes for polysaccharide hydrogels. ACS APPLIED MATERIALS & INTERFACES 2012; 4:4610-4615. [PMID: 22909447 DOI: 10.1021/am300985p] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Here we demonstrate a polysaccharide hydrogel reinforced with finely dispersed single-walled carbon nanotubes (SWNTs) using biocompatible dispersants O-carboxymethylchitosan (OC) and chondroitin sulfate A (CS-A) as a structural support. Both of the dispersants can disperse SWNTs in aqueous solutions and hydrogel matrix as individual tubes or small bundles. Additionally, we have found that compressive modulus and strain of the hydrogels reinforced with SWNTs were enhanced as much as two times by the addition of a few weight percent of SWNTs. Moreover, the SWNT-incorporated hydrogels exhibited lower impedance and higher charge capacity than the alginate/dispersant hydrogel without SWNTs. The OC and the CS-A demonstrated much higher reinforcing enhancement than a commercially available dispersant, sodium dodecyl sulfate. Combined with the experimental data on the mechanical and electrical properties, the biocompatibility of OC and CS-A can provide the possibility of biomedical application of the SWNT-reinforced hydrogels.
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Affiliation(s)
- Liang Yu Yan
- School of Chemical and Biomedical Engineering, Nanyang Technological University, 637457, Singapore
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73
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Oliveira AL, Sun L, Kim HJ, Hu X, Rice W, Kluge J, Reis RL, Kaplan DL. Aligned silk-based 3-D architectures for contact guidance in tissue engineering. Acta Biomater 2012; 8:1530-42. [PMID: 22202909 DOI: 10.1016/j.actbio.2011.12.015] [Citation(s) in RCA: 77] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2011] [Revised: 10/24/2011] [Accepted: 12/09/2011] [Indexed: 01/15/2023]
Abstract
An important challenge in the biomaterials field is to mimic the structure of functional tissues via cell and extracellular matrix (ECM) alignment and anisotropy. Toward this goal, silk-based scaffolds resembling bone lamellar structure were developed using a freeze-drying technique. The structure could be controlled directly by solute concentration and freezing parameters, resulting in lamellar scaffolds with regular morphology. Different post-treatments, such as methanol, water annealing and steam sterilization, were investigated to induce water stability. The resulting structures exhibited significant differences in terms of morphological integrity, structure and mechanical properties. The lamellar thicknesses were ∼2.6 μm for the methanol-treated scaffolds and ∼5.8 μm for water-annealed. These values are in the range of those reported for human lamellar bone. Human bone marrow-derived mesenchymal stem cells (hMSC) were seeded on these silk fibroin lamellar scaffolds and grown under osteogenic conditions to assess the effect of the microstructure on cell behavior. Collagen in the newly deposited ECM was found aligned along the lamellar architectures. In the case of methanol-treated lamellar structures, the hMSC were able to migrate into the interior of the scaffolds, producing a multilamellar hybrid construct. The present morphology constitutes a useful pattern onto which hMSC cells attach and proliferate for guided formation of a highly oriented extracellular matrix.
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Affiliation(s)
- A L Oliveira
- 3B's Research Group - Biomaterials, Biodegradables and Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, AvePark, 4806-909 Taipas, Guimarães, Portugal.
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Jin Lee H, Kim GH. Cryogenically direct-plotted alginate scaffolds consisting of micro/nano-architecture for bone tissue regeneration. RSC Adv 2012. [DOI: 10.1039/c2ra20836a] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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75
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Kim YB, Kim G. Rapid-prototyped collagen scaffolds reinforced with PCL/β-TCP nanofibres to obtain high cell seeding efficiency and enhanced mechanical properties for bone tissue regeneration. ACTA ACUST UNITED AC 2012. [DOI: 10.1039/c2jm33036a] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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