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Chen J, Li J, Li Y, Wu S. Fabrication and characterisation of collagen/pullulan ultra-thin fibers by electrospinning. Food Chem X 2024; 21:101138. [PMID: 38304044 PMCID: PMC10831494 DOI: 10.1016/j.fochx.2024.101138] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2023] [Revised: 12/19/2023] [Accepted: 01/11/2024] [Indexed: 02/03/2024] Open
Abstract
Collagen electrospun fibers are promising materials for food packaging and tissue engineering. The conventional electrospinning of collagen, however, is usually carried out by dissolving it in organic reagents, which are toxic. In this study, collagen/pullulan (COL/PUL) ultra-thin fibers were prepared by electrospinning using acetic acid as a solvent. Compared to the conventional preparation method, the proposed method is safe and does not produce toxic solvent residues. The introduction of PUL increased the degree of molecular entanglement in the solution, so the viscosity of the COL/PUL electrospun solution increased from 0.50 ± 0.01 Pa∙s to 4.40 ± 0.08 Pa∙s, and the electrical conductivity decreased from 1954.00 ± 1.00 mS/cm to 1372.33 ± 0.58 mS/cm. Scanning electron microscopy analysis confirmed that PUL improved the spinnability of COL, and smooth, defect-free COL/PUL ultra-thin fibers with diameters of 215.32 ± 40.56 nm and 240.97 ± 53.93 nm were successfully prepared at a viscosity of greater than 1.18 Pa∙s. As the proportion of PUL increased, intramolecular hydrogen bonds became the dominant interaction between COL and PUL. The intermolecular hydrogen bonding content decreased from 52.05 % to 36.45 %, and the intramolecular hydrogen bonding content increased from 46.11 % to 62.95 %. The COL was gradually unfolded, the content of α-helices decreased from 33.57 % to 25.91 % and the random coils increased from 34.22 % to 40.09 %. More than 36 % of the triple helix fraction of COL was retained by the COL/PUL ultra-thin fibers, whereas only 16 % of the triple helix fraction of COL was retained by the COL nanofibers prepared with 2.2.2-trifluoroethanol. These results could serve as a reference for the development of green food COL-based fibers.
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Affiliation(s)
| | | | - Yushuang Li
- Technical Innovation Center for Utilization of Marine Biological Resources, Third Institute of Oceanography, Ministry of Natural Resources, Xiamen 361005, China
| | - Sijia Wu
- Technical Innovation Center for Utilization of Marine Biological Resources, Third Institute of Oceanography, Ministry of Natural Resources, Xiamen 361005, China
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Razavi MS, Ebrahimnejad P, Javar HA, Weppelmann TA, Akbari J, Amoli FA, Atyabi F, Dinarvand R. Development of dual-functional core-shell electrospun mats with controlled release of anti-inflammatory and anti-bacterial agents for the treatment of corneal alkali burn injuries. BIOMATERIALS ADVANCES 2023; 154:213648. [PMID: 37812983 DOI: 10.1016/j.bioadv.2023.213648] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/03/2023] [Revised: 09/19/2023] [Accepted: 09/30/2023] [Indexed: 10/11/2023]
Abstract
In this study, a novel dual-drug carrier for the co-administration of an anti-inflammatory and antibiotic agent consisting of core-shell nanofibers for the treatment of cornea alkali burns was designed. The core-shell nanofibers were prepared via coaxial electrospinning of curcumin-loaded silk fibroin as the core and vancomycin-loaded chitosan/polyvinyl alcohol (PVA) as the shell. Electron microscopy (SEM and TEM) images confirmed the preparation of smooth, bead-free, and continuous fibers that formed clear core-shell structures. For further studies, nanofiber mats were cross-linked by heat treatment to avoid rapid disintegration in water and improve both mechanical properties and drug release. The release profile of curcumin and vancomycin indicated an initial burst release, continued by the extended release of both drugs within 72 hours. Rabbit corneal cells demonstrated high rates of proliferation when evaluated using a cell metabolism assay. Finally, the therapeutic efficiency of core/shell nanofibers in healing cornea alkali burn was studied by microscopic and macroscopic observation, fluorescence staining, and hematoxylin-eosin assay on rabbit eyes. The anti-inflammatory activity of fabricated fibers was evaluated by enzyme-linked immunosorbent assay and Immunofluorescence analysis. In conclusion, using a robust array of in vitro and in vivo experiments this study demonstrated the ability of the dual-drug carriers to promote corneal re-epithelialization, minimize inflammation, and inhibit corneal neovascularization. Since these parameters are critical to the healing of corneal wounds from alkali burns, we suggest that this discovery represents a promising future therapeutic agent that warrants further study in humans.
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Affiliation(s)
- Malihe Sadat Razavi
- Student Research Committee, Faculty of Pharmacy, Mazandaran University of Medical Sciences, Sari, Iran; Nanotechnology Research Centre, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
| | - Pedram Ebrahimnejad
- Department of Pharmaceutics, Faculty of Pharmacy, Mazandaran University of Medical Sciences, Sari, Iran; Pharmaceutical Sciences Research Center, Hemoglobinopathy Institute, Mazandaran University of Medical Sciences, Sari, Iran.
| | - Hamid Akbari Javar
- Department of Pharmaceutics, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
| | - Thomas A Weppelmann
- Department of Ophthalmology, Morsani College of Medicine, University of South Florida, Tampa, FL, United States of America
| | - Jafar Akbari
- Department of Pharmaceutics, Faculty of Pharmacy, Mazandaran University of Medical Sciences, Sari, Iran
| | - Fahimeh Asadi Amoli
- Ophthalmic Pathology Department, Farabi Eye Hospital, Tehran University of Medical Sciences, Tehran, Iran
| | - Fatemeh Atyabi
- Nanotechnology Research Centre, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
| | - Rassoul Dinarvand
- Nanotechnology Research Centre, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran; Leicester School of Pharmacy, Leicester Institute for Pharmaceutical Innovation, De Montfort University, Leicester, UK.
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Zhang L, Liao W, Chen S, Chen Y, Cheng P, Lu X, Ma Y. Towards a New 3Rs Era in the construction of 3D cell culture models simulating tumor microenvironment. Front Oncol 2023; 13:1146477. [PMID: 37077835 PMCID: PMC10106600 DOI: 10.3389/fonc.2023.1146477] [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: 01/17/2023] [Accepted: 03/22/2023] [Indexed: 04/05/2023] Open
Abstract
Three-dimensional cell culture technology (3DCC) sits between two-dimensional cell culture (2DCC) and animal models and is widely used in oncology research. Compared to 2DCC, 3DCC allows cells to grow in a three-dimensional space, better simulating the in vivo growth environment of tumors, including hypoxia, nutrient concentration gradients, micro angiogenesis mimicism, and the interaction between tumor cells and the tumor microenvironment matrix. 3DCC has unparalleled advantages when compared to animal models, being more controllable, operable, and convenient. This review summarizes the comparison between 2DCC and 3DCC, as well as recent advances in different methods to obtain 3D models and their respective advantages and disadvantages.
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Affiliation(s)
- Long Zhang
- Organ Transplant Center, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
- Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China
| | - Weiqi Liao
- Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China
| | - Shimin Chen
- Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China
| | - Yukun Chen
- Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China
| | - Pengrui Cheng
- Organ Transplant Center, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
- Guangdong Provincial Key Laboratory of Organ Donation and Transplant Immunology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
- Guangdong Provincial International Cooperation Base of Science and Technology (Organ Transplantation), The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Xinjun Lu
- Department of Biliary-Pancreatic Surgery, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
| | - Yi Ma
- Organ Transplant Center, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
- Guangdong Provincial Key Laboratory of Organ Donation and Transplant Immunology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
- Guangdong Provincial International Cooperation Base of Science and Technology (Organ Transplantation), The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
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Visser D, Rogg K, Fuhrmann E, Marzi J, Schenke-Layland K, Hartmann H. Electrospinning of collagen: enzymatic and spectroscopic analyses reveal solvent-independent disruption of the triple-helical structure. J Mater Chem B 2023; 11:2207-2218. [PMID: 36786208 DOI: 10.1039/d2tb02602c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Electrospinning has become a well-established method for creating nanofibrous meshes for tissue-engineering applications. The incorporation of natural extracellular components, such as electrospun pure collagen nanofibers, has proven to be particularly challenging, as electrospun collagen nanofibers do not constitute native collagen fibers anymore. In this study, we show that this detrimental effect is not only limited to fluorinated solvents, as previously thought. Rat tail collagen was dissolved in acetic acid and ethanol and electrospun at various temperatures. Electrospun collagen mats were analyzed using circular dichroism, enzymatic digestion, SDS-PAGE, western blotting, and Raman spectroscopy and compared to heat-denaturated and electrospun collagen in HFIP. Our data suggest that even non-fluorinated electrospinning solvents, such as acid-based solvents, do not yield structurally intact fibers. Interestingly, neither epithelial cells nor fibroblasts displayed a different cellular response to electrospun collagen compared to collagen-coated polyurethane scaffolds in F-actin staining and metabolic analysis using fluorescent lifetime imaging. The disruption of the structural integrity of collagen might therefore be underestimated based on the cell-material interactions alone. These observations expose the larger than anticipated vulnerability of collagen in the electrospinning process. Based on these findings, the influence of the electrospinning process on the distinct biochemical properties of collagen should always be considered, when ECM-mimicking fibrous constructs are manufactured.
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Affiliation(s)
- Dmitri Visser
- NMI Natural and Medical Sciences Institute at the University of Tübingen, Markwiesenstrasse 55, 72770 Reutlingen, Germany.
| | - Katharina Rogg
- NMI Natural and Medical Sciences Institute at the University of Tübingen, Markwiesenstrasse 55, 72770 Reutlingen, Germany.
| | - Ellena Fuhrmann
- NMI Natural and Medical Sciences Institute at the University of Tübingen, Markwiesenstrasse 55, 72770 Reutlingen, Germany.
| | - Julia Marzi
- NMI Natural and Medical Sciences Institute at the University of Tübingen, Markwiesenstrasse 55, 72770 Reutlingen, Germany. .,Institute of Biomedical Engineering, Department for Medical Technologies & Regenerative Medicine, Eberhard Karls University Tübingen, 72076 Tübingen, Germany.,Cluster of Excellence iFIT (EXC 2180) "Image-Guided and Functionally Instructed Tumor Therapies", Eberhard Karls University Tübingen, 72076 Tübingen, Germany
| | - Katja Schenke-Layland
- NMI Natural and Medical Sciences Institute at the University of Tübingen, Markwiesenstrasse 55, 72770 Reutlingen, Germany. .,Institute of Biomedical Engineering, Department for Medical Technologies & Regenerative Medicine, Eberhard Karls University Tübingen, 72076 Tübingen, Germany.,Cluster of Excellence iFIT (EXC 2180) "Image-Guided and Functionally Instructed Tumor Therapies", Eberhard Karls University Tübingen, 72076 Tübingen, Germany
| | - Hanna Hartmann
- NMI Natural and Medical Sciences Institute at the University of Tübingen, Markwiesenstrasse 55, 72770 Reutlingen, Germany.
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Gomes MR, Castelo Ferreira F, Sanjuan-Alberte P. Electrospun piezoelectric scaffolds for cardiac tissue engineering. BIOMATERIALS ADVANCES 2022; 137:212808. [PMID: 35929248 DOI: 10.1016/j.bioadv.2022.212808] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/04/2022] [Revised: 03/29/2022] [Accepted: 04/13/2022] [Indexed: 06/15/2023]
Abstract
The use of smart materials in tissue engineering is becoming increasingly appealing to provide additional functionalities and control over cell fate. The stages of tissue development and regeneration often require various electrical and electromechanical cues supported by the extracellular matrix, which is often neglected in most tissue engineering approaches. Particularly, in cardiac cells, electrical signals modulate cell activity and are responsible for the maintenance of the excitation-contraction coupling. Addition of electroconductive and topographical cues improves the biomimicry of cardiac tissues and plays an important role in driving cells towards the desired phenotype. Current platforms used to apply electrical stimulation to cells in vitro often require large external equipment and wires and electrodes immersed in the culture media, limiting the scalability and applicability of this process. Piezoelectric materials represent a shift in paradigm in materials and methods aimed at providing electrical stimulation to cardiac cells since they can produce and deliver electrical signals to cells and tissues by mechanoelectrical transduction. Despite the ability of piezoelectric materials to mimic the mechanoelectrical transduction of the heart, the use of these materials is limited in cardiac tissue engineering and methods to characterise piezoelectricity are often built in-house, which poses an additional difficulty when comparing results from the literature. In this work, we aim at providing an overview of the main challenges in cardiac tissue engineering and how piezoelectric materials could offer a solution to them. A revision on the existing literature in electrospun piezoelectric materials applied to cardiac tissue engineering is performed for the first time, as electrospinning plays an important role in the manufacturing of scaffolds with enhanced piezoelectricity and extracellular matrix native-like morphology. Finally, an overview of the current techniques used to evaluate piezoelectricity and their limitations is provided.
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Affiliation(s)
- Mariana Ramalho Gomes
- Department of Bioengineering and Institute for Bioengineering and Biosciences, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisbon, Portugal; Associate Laboratory i4HB, Institute for Health and Bioeconomy, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisbon, Portugal
| | - Frederico Castelo Ferreira
- Department of Bioengineering and Institute for Bioengineering and Biosciences, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisbon, Portugal; Associate Laboratory i4HB, Institute for Health and Bioeconomy, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisbon, Portugal
| | - Paola Sanjuan-Alberte
- Department of Bioengineering and Institute for Bioengineering and Biosciences, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisbon, Portugal; Associate Laboratory i4HB, Institute for Health and Bioeconomy, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisbon, Portugal.
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Cui L, Yao Y, Yim EKF. The effects of surface topography modification on hydrogel properties. APL Bioeng 2021; 5:031509. [PMID: 34368603 PMCID: PMC8318605 DOI: 10.1063/5.0046076] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2021] [Accepted: 06/21/2021] [Indexed: 12/23/2022] Open
Abstract
Hydrogel has been an attractive biomaterial for tissue engineering, drug delivery, wound healing, and contact lens materials, due to its outstanding properties, including high water content, transparency, biocompatibility, tissue mechanical matching, and low toxicity. As hydrogel commonly possesses high surface hydrophilicity, chemical modifications have been applied to achieve the optimal surface properties to improve the performance of hydrogels for specific applications. Ideally, the effects of surface modifications would be stable, and the modification would not affect the inherent hydrogel properties. In recent years, a new type of surface modification has been discovered to be able to alter hydrogel properties by physically patterning the hydrogel surfaces with topographies. Such physical patterning methods can also affect hydrogel surface chemical properties, such as protein adsorption, microbial adhesion, and cell response. This review will first summarize the works on developing hydrogel surface patterning methods. The influence of surface topography on interfacial energy and the subsequent effects on protein adsorption, microbial, and cell interactions with patterned hydrogel, with specific examples in biomedical applications, will be discussed. Finally, current problems and future challenges on topographical modification of hydrogels will also be discussed.
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Affiliation(s)
- Linan Cui
- Department of Chemical Engineering, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada
| | - Yuan Yao
- Department of Chemical Engineering, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada
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Montalbano G, Tomasina C, Fiorilli S, Camarero-Espinosa S, Vitale-Brovarone C, Moroni L. Biomimetic Scaffolds Obtained by Electrospinning of Collagen-Based Materials: Strategies to Hinder the Protein Denaturation. MATERIALS 2021; 14:ma14164360. [PMID: 34442884 PMCID: PMC8400144 DOI: 10.3390/ma14164360] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/02/2021] [Revised: 07/28/2021] [Accepted: 08/02/2021] [Indexed: 12/17/2022]
Abstract
The use of biomaterials and scaffolds to boost bone regeneration is increasingly gaining interest as a complementary method to the standard surgical and pharmacological treatments in case of severe injuries and pathological conditions. In this frame, the selection of biomaterials and the accurate assessment of the manufacturing procedures are considered key factors in the design of constructs able to resemble the features of the native tissue and effectively induce specific cell responses. Accordingly, composite scaffolds based on type-I-collagen can mimic the composition of bone extracellular matrix (ECM), while electrospinning technologies can be exploited to produce nanofibrous matrices to resemble its architectural organization. However, the combination of collagen and electrospinning reported several complications due to the frequent denaturation of the protein and the variability of results according to collagen origin, concentration, and solvent. In this context, the strategies optimized in this study enabled the preparation of collagen-based electrospun scaffolds characterized by about 100 nm fibers, preserving the physico-chemical properties of the protein thanks to the use of an acetic acid-based solvent. Moreover, nanoparticles of mesoporous bioactive glasses were combined with the optimized collagen formulation, proving the successful design of composite scaffolds resembling the morphological features of bone ECM at the nanoscale.
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Affiliation(s)
- Giorgia Montalbano
- Department of Applied Science and Technology, Politecnico di Torino, 10129 Torino, Italy; (G.M.); (S.F.)
| | - Clarissa Tomasina
- Complex Tissue Regeneration Department, MERLN Institute for Technology-Inspired Regenerative Medicine, Maastricht University, Universiteitssingel 40, 6229 ET Maastricht, The Netherlands; (C.T.); (S.C.-E.); (L.M.)
| | - Sonia Fiorilli
- Department of Applied Science and Technology, Politecnico di Torino, 10129 Torino, Italy; (G.M.); (S.F.)
| | - Sandra Camarero-Espinosa
- Complex Tissue Regeneration Department, MERLN Institute for Technology-Inspired Regenerative Medicine, Maastricht University, Universiteitssingel 40, 6229 ET Maastricht, The Netherlands; (C.T.); (S.C.-E.); (L.M.)
- POLYMAT, University of the Basque Country UPV/EHU, 20018 San Sebastián, Spain
- IKERBASQUE, Basque Foundation for Science, 48009 Bilbao, Spain
| | - Chiara Vitale-Brovarone
- Department of Applied Science and Technology, Politecnico di Torino, 10129 Torino, Italy; (G.M.); (S.F.)
- Correspondence:
| | - Lorenzo Moroni
- Complex Tissue Regeneration Department, MERLN Institute for Technology-Inspired Regenerative Medicine, Maastricht University, Universiteitssingel 40, 6229 ET Maastricht, The Netherlands; (C.T.); (S.C.-E.); (L.M.)
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Nanofibrous Gelatin-Based Biomaterial with Improved Biomimicry Using D-Periodic Self-Assembled Atelocollagen. Biomimetics (Basel) 2021; 6:biomimetics6010020. [PMID: 33803778 PMCID: PMC8006151 DOI: 10.3390/biomimetics6010020] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2021] [Revised: 03/12/2021] [Accepted: 03/15/2021] [Indexed: 01/14/2023] Open
Abstract
Design of bioinspired materials that mimic the extracellular matrix (ECM) at the nanoscale is a challenge in tissue engineering. While nanofibrillar gelatin materials mimic chemical composition and nano-architecture of natural ECM collagen components, it lacks the characteristic D-staggered array (D-periodicity) of 67 nm, which is an important cue in terms of cell recognition and adhesion properties. In this study, a nanofibrous gelatin matrix with improved biomimicry is achieved using a formulation including a minimal content of D-periodic self-assembled atelocollagen. We suggest a processing route approach consisting of the thermally induced phase separation of the gelatin based biopolymeric mixture precursor followed by chemical-free material cross-linking. The matrix nanostructure is characterized using field emission gun scanning electron microscopy (FEG-SEM), transmission electron microscopy (TEM), wide angle X-ray diffraction (XRD) and Fourier-transform infrared spectroscopy (FT-IR). The cell culture assays indicate that incorporation of 2.6 wt.% content of D-periodic atelocollagen to the gelatin material, produces a significant increase of MC3T3-E1 mouse preosteoblast cells attachment and human mesenchymal stem cells (hMSCs) proliferation, in comparison with related bare gelatin matrices. The presented results demonstrate the achievement of an efficient route to produce a cost-effective, compositionally defined and low immunogenic “collagen-like” instructive biomaterial, based on gelatin.
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Collagen-Based Electrospun Materials for Tissue Engineering: A Systematic Review. Bioengineering (Basel) 2021; 8:bioengineering8030039. [PMID: 33803598 PMCID: PMC8003061 DOI: 10.3390/bioengineering8030039] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2021] [Revised: 03/11/2021] [Accepted: 03/12/2021] [Indexed: 12/14/2022] Open
Abstract
Collagen is a key component of the extracellular matrix (ECM) in organs and tissues throughout the body and is used for many tissue engineering applications. Electrospinning of collagen can produce scaffolds in a wide variety of shapes, fiber diameters and porosities to match that of the native ECM. This systematic review aims to pool data from available manuscripts on electrospun collagen and tissue engineering to provide insight into the connection between source material, solvent, crosslinking method and functional outcomes. D-banding was most often observed in electrospun collagen formed using collagen type I isolated from calfskin, often isolated within the laboratory, with short solution solubilization times. All physical and chemical methods of crosslinking utilized imparted resistance to degradation and increased strength. Cytotoxicity was observed at high concentrations of crosslinking agents and when abbreviated rinsing protocols were utilized. Collagen and collagen-based scaffolds were capable of forming engineered tissues in vitro and in vivo with high similarity to the native structures.
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Taskin MB, Ahmad T, Wistlich L, Meinel L, Schmitz M, Rossi A, Groll J. Bioactive Electrospun Fibers: Fabrication Strategies and a Critical Review of Surface-Sensitive Characterization and Quantification. Chem Rev 2021; 121:11194-11237. [DOI: 10.1021/acs.chemrev.0c00816] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Mehmet Berat Taskin
- Department of Functional Materials in Medicine and Dentistry and Bavarian Polymer Institute, University of Würzburg, 97070 Würzburg, Germany
| | - Taufiq Ahmad
- Department of Functional Materials in Medicine and Dentistry and Bavarian Polymer Institute, University of Würzburg, 97070 Würzburg, Germany
| | - Laura Wistlich
- Department of Functional Materials in Medicine and Dentistry and Bavarian Polymer Institute, University of Würzburg, 97070 Würzburg, Germany
| | - Lorenz Meinel
- Institute of Pharmacy and Food Chemistry and Helmholtz Institute for RNA Based Infection Research, 97074 Würzburg, Germany
| | - Michael Schmitz
- Department of Functional Materials in Medicine and Dentistry and Bavarian Polymer Institute, University of Würzburg, 97070 Würzburg, Germany
| | - Angela Rossi
- Department of Functional Materials in Medicine and Dentistry and Bavarian Polymer Institute, University of Würzburg, 97070 Würzburg, Germany
| | - Jürgen Groll
- Department of Functional Materials in Medicine and Dentistry and Bavarian Polymer Institute, University of Würzburg, 97070 Würzburg, Germany
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Miele D, Catenacci L, Rossi S, Sandri G, Sorrenti M, Terzi A, Giannini C, Riva F, Ferrari F, Caramella C, Bonferoni MC. Collagen/PCL Nanofibers Electrospun in Green Solvent by DOE Assisted Process. An Insight into Collagen Contribution. MATERIALS 2020; 13:ma13214698. [PMID: 33105584 PMCID: PMC7659940 DOI: 10.3390/ma13214698] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/22/2020] [Revised: 09/09/2020] [Accepted: 10/16/2020] [Indexed: 01/15/2023]
Abstract
Collagen, thanks to its biocompatibility, biodegradability and weak antigenicity, is widely used in dressings and scaffolds, also as electrospun fibers. Its mechanical stability can be improved by adding polycaprolactone (PCL), a synthetic and biodegradable aliphatic polyester. While previously collagen/PCL combinations were electrospun in solvents such as hexafluoroisopropanol (HFIP) or trifluoroethanol (TFE), more recently literature describes collagen/PCL nanofibers obtained in acidic aqueous solutions. A good morphology of the fibers represents in this case still a challenge, especially for high collagen/PCL ratios. In this work, thanks to preliminary rheological and physicochemical characterization of the solutions and to a Design of Experiments (DOE) approach on process parameters, regular and dimensionally uniform fibers were obtained with collagen/PCL ratios up to 1:2 and 1:1 w/w. Collagen ratio appeared relevant for mechanical strength of dry and hydrated fibers. WAXS and FTIR analysis showed that collagen denaturation is related both to the medium and to the electrospinning process. After one week in aqueous environment, collagen release was complete and a concentration dependent stimulatory effect on fibroblast growth was observed, suggesting the fiber suitability for wound healing. The positive effect of collagen on mechanical properties and on fibroblast biocompatibility was confirmed by a direct comparison of nanofiber performance after collagen substitution with gelatin.
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Affiliation(s)
- Dalila Miele
- Department of Drug Sciences, University of Pavia, Viale Taramelli 12, 27100 Pavia, Italy; (D.M.); (L.C.); (S.R.); (G.S.); (M.S.); (F.F.); (C.C.)
| | - Laura Catenacci
- Department of Drug Sciences, University of Pavia, Viale Taramelli 12, 27100 Pavia, Italy; (D.M.); (L.C.); (S.R.); (G.S.); (M.S.); (F.F.); (C.C.)
| | - Silvia Rossi
- Department of Drug Sciences, University of Pavia, Viale Taramelli 12, 27100 Pavia, Italy; (D.M.); (L.C.); (S.R.); (G.S.); (M.S.); (F.F.); (C.C.)
| | - Giuseppina Sandri
- Department of Drug Sciences, University of Pavia, Viale Taramelli 12, 27100 Pavia, Italy; (D.M.); (L.C.); (S.R.); (G.S.); (M.S.); (F.F.); (C.C.)
| | - Milena Sorrenti
- Department of Drug Sciences, University of Pavia, Viale Taramelli 12, 27100 Pavia, Italy; (D.M.); (L.C.); (S.R.); (G.S.); (M.S.); (F.F.); (C.C.)
| | - Alberta Terzi
- Institute of Crystallography, CNR-IC, Via Amendola 122/O, 70126 Bari, Italy; (A.T.); (C.G.)
| | - Cinzia Giannini
- Institute of Crystallography, CNR-IC, Via Amendola 122/O, 70126 Bari, Italy; (A.T.); (C.G.)
| | - Federica Riva
- Department of Public Health, Experimental and Forensic Medicine, University of Pavia, via Forlanini 2, 27100 Pavia, Italy;
| | - Franca Ferrari
- Department of Drug Sciences, University of Pavia, Viale Taramelli 12, 27100 Pavia, Italy; (D.M.); (L.C.); (S.R.); (G.S.); (M.S.); (F.F.); (C.C.)
| | - Carla Caramella
- Department of Drug Sciences, University of Pavia, Viale Taramelli 12, 27100 Pavia, Italy; (D.M.); (L.C.); (S.R.); (G.S.); (M.S.); (F.F.); (C.C.)
| | - Maria Cristina Bonferoni
- Department of Drug Sciences, University of Pavia, Viale Taramelli 12, 27100 Pavia, Italy; (D.M.); (L.C.); (S.R.); (G.S.); (M.S.); (F.F.); (C.C.)
- Correspondence:
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Abstract
Regenerative engineering is powerfully emerging as a successful strategy for the regeneration of complex tissues and biological organs using a convergent approach that integrates several fields of expertise. This innovative and disruptive approach has spurred the demands for more choice of biomaterials with distinctive biological recognition properties. An ideal biomaterial is one that closely mimics the hierarchical architecture and features of the extracellular matrices (ECM) of native tissues. Nanofabrication technology presents an excellent springboard for the development of nanofiber scaffolds that can have positive interactions in the immediate cellular environment and stimulate specific regenerative cascades at the molecular level to yield healthy tissues. This paper systematically reviews the electrospinning process technology and its utility in matrix-based regenerative engineering, focusing mainly on musculoskeletal tissues. It briefly outlines the electrospinning/three-dimensional printing system duality and concludes with a discussion on the technology outlook and future directions of nanofiber matrices.
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Affiliation(s)
- Kenneth S. Ogueri
- Department of Materials Science and Engineering,
University of Connecticut, Storrs, CT 06269, USA
- Connecticut Convergence Institute, University of
Connecticut Health Center, Farmington, CT 06030, USA
| | - Cato T. Laurencin
- Department of Materials Science and Engineering,
University of Connecticut, Storrs, CT 06269, USA
- Connecticut Convergence Institute, University of
Connecticut Health Center, Farmington, CT 06030, USA
- Department of Orthopaedic Surgery, University of
Connecticut Health Center, Farmington, CT 06030, USA
- Department of Biomedical Engineering, University of
Connecticut, Storrs, CT 06269, USA
- Department of Chemical and Biomolecular Engineering,
University of Connecticut, Storrs, CT 06269, USA
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13
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Comparative Study of Electrospun Scaffolds Containing Native GAGs and a GAG Mimetic for Human Mesenchymal Stem Cell Chondrogenesis. Ann Biomed Eng 2020; 48:2040-2052. [DOI: 10.1007/s10439-020-02499-9] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2019] [Accepted: 03/24/2020] [Indexed: 12/20/2022]
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14
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Dewle A, Pathak N, Rakshasmare P, Srivastava A. Multifarious Fabrication Approaches of Producing Aligned Collagen Scaffolds for Tissue Engineering Applications. ACS Biomater Sci Eng 2020; 6:779-797. [DOI: 10.1021/acsbiomaterials.9b01225] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Ankush Dewle
- Department of Medical Devices, National Institute of Pharmaceutical Education and Research, Opposite Air Force Station, Palaj, Gandhinagar, Gujarat 382355, India
| | - Navanit Pathak
- Department of Medical Devices, National Institute of Pharmaceutical Education and Research, Opposite Air Force Station, Palaj, Gandhinagar, Gujarat 382355, India
| | - Prakash Rakshasmare
- Department of Medical Devices, National Institute of Pharmaceutical Education and Research, Opposite Air Force Station, Palaj, Gandhinagar, Gujarat 382355, India
| | - Akshay Srivastava
- Department of Medical Devices, National Institute of Pharmaceutical Education and Research, Opposite Air Force Station, Palaj, Gandhinagar, Gujarat 382355, India
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15
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Ghane N, Beigi MH, Labbaf S, Nasr-Esfahani MH, Kiani A. Design of hydrogel-based scaffolds for the treatment of spinal cord injuries. J Mater Chem B 2020; 8:10712-10738. [DOI: 10.1039/d0tb01842b] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Hydrogel-based scaffold design approaches for the treatment of spinal cord injuries.
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Affiliation(s)
- Nazanin Ghane
- Department of Cellular Biotechnology Cell Science Research Center
- Royan Institute for Biotechnology
- ACECR
- Isfahan
- Iran
| | - Mohammad-Hossein Beigi
- Department of Cellular Biotechnology Cell Science Research Center
- Royan Institute for Biotechnology
- ACECR
- Isfahan
- Iran
| | - Sheyda Labbaf
- Biomaterials Research Group
- Department of Materials Engineering
- Isfahan University of Technology
- Isfahan
- Iran
| | | | - Amirkianoosh Kiani
- Silicon Hall: Micro/Nano Manufacturing Facility
- Faculty of Engineering and Applied Science
- Ontario Tech University
- Ontario
- Canada
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16
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Castiaux AD, Spence DM, Martin RS. Review of 3D Cell Culture with Analysis in Microfluidic Systems. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2019; 11:4220-4232. [PMID: 32051693 PMCID: PMC7015157 DOI: 10.1039/c9ay01328h] [Citation(s) in RCA: 61] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/02/2023]
Abstract
A review with 105 references that analyzes the emerging research area of 3D cell culture in microfluidic platforms with integrated detection schemes. Over the last several decades a central focus of cell culture has been the development of better in vivo mimics. This has led to the evolution from planar cell culture to cell culture on 3D scaffolds, and the incorporation of cell scaffolds into microfluidic devices. Specifically, this review explores the incorporation of suspension culture, hydrogels scaffolds, paper-based scaffolds, and fiber-based scaffolds into microfluidic platforms. In order to decrease analysis time, simplify sample preparation, monitor key signaling pathways involved in cell-to-cell communication or cell growth, and combat the limitations of sample volume/ dilution seen in traditional assays, researchers have also started to focus on integrating detection schemes into the cell culture devices. This review will highlight the work that has been performed towards combining these techniques and will discuss potential future directions. It is clear that microfluidic-based 3D cell culture coupled with quantitative analysis can greatly improve our ability to mimic and understand in vivo systems.
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Affiliation(s)
- Andre D Castiaux
- Department of Chemistry, Saint Louis University, 3501 Laclede Ave., St. Louis, MO 63103
| | - Dana M Spence
- Department of Biomedical Engineering, Institute for Quantitative Health Science & Engineering, Michigan State University, East Lansing, MI, 48824
| | - R Scott Martin
- Department of Chemistry, Saint Louis University, 3501 Laclede Ave., St. Louis, MO 63103
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17
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Bazrafshan Z, Stylios GK. Spinnability of collagen as a biomimetic material: A review. Int J Biol Macromol 2019; 129:693-705. [DOI: 10.1016/j.ijbiomac.2019.02.024] [Citation(s) in RCA: 49] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2018] [Revised: 02/03/2019] [Accepted: 02/04/2019] [Indexed: 12/28/2022]
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18
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A UV-cured nanofibrous membrane of vinylbenzylated gelatin-poly(ɛ-caprolactone) dimethacrylate co-network by scalable free surface electrospinning. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2018; 91:541-555. [DOI: 10.1016/j.msec.2018.05.076] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/26/2017] [Revised: 05/03/2018] [Accepted: 05/26/2018] [Indexed: 12/15/2022]
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19
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Nune M, Manchineella S, T G, K S N. Melanin incorporated electroactive and antioxidant silk fibroin nanofibrous scaffolds for nerve tissue engineering. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2018; 94:17-25. [PMID: 30423699 DOI: 10.1016/j.msec.2018.09.014] [Citation(s) in RCA: 59] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/10/2017] [Revised: 08/27/2018] [Accepted: 09/05/2018] [Indexed: 02/03/2023]
Abstract
Nerve restoration and repair in the central nervous system is complicated and requires several factors to be considered while designing the scaffolds like being bioactive as well as having neuroinductive, neuroconductive and antioxidant properties. Aligned electrospun nanofibers provide necessary guidance and topographical cues required for directing the axonal and neurite outgrowth during regeneration. Conduction of nerve impulses is a mandatory feature of a typical nerve. The neuro-conductive property can be imparted by blending the biodegradable, bioactive polymers with conductive polymers. This will provide additional features, i.e., electrical cues to the already existing topographical and bioactive cues in order to make it a more multifaceted neuroregenerative approach. Hence in the present study, we used a combination of silk fibroin and melanin for the fabrication of random and aligned electrospun nanofibrous composite scaffolds. We performed the physico-chemical characterization and also assessed their antioxidant properties. We also evaluated their neurogenic potential using human neuroblastoma cells (SH-SY5Y) for their cellular viability, proliferation, adhesion and differentiation levels. Designed nanofibrous scaffolds had adequate physical properties suitable as neural substrates to promote neuronal growth and regeneration. They stimulated the neuroblastoma cell attachment and viability indicating their biocompatible nature. Silk/melanin composite scaffolds have specifically exhibited high antioxidant nature proven by the radical scavenging activity. Additionally, the melanin incorporated aligned silk fibroin scaffolds promoted the cell differentiation into neurons and orientation along their axis. Our results confirmed the potential of melanin incorporated aligned silk fibroin scaffolds as the promising candidates for effective nerve regeneration and recovery.
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Affiliation(s)
- Manasa Nune
- Chemistry and Physics of Materials Unit School of Advanced Materials, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bengaluru 560064, Karnataka, India
| | - Shivaprasad Manchineella
- Bioorganic Chemistry Laboratory, New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bengaluru 560064, Karnataka, India
| | - Govindaraju T
- Bioorganic Chemistry Laboratory, New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bengaluru 560064, Karnataka, India
| | - Narayan K S
- School of Advanced Materials and Department of Neurosciences, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bengaluru 560064, Karnataka, India.
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20
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Collagen/Polyethylene Oxide Nanofibrous Membranes with Improved Hemostasis and Cytocompatibility for Wound Dressing. APPLIED SCIENCES-BASEL 2018. [DOI: 10.3390/app8081226] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
As a promising agent for biomedical application, collagen has been used as a nanofiber to architecturally mimic its fibrillar structure in Extracellular Matrix (ECM); however, it has to be modified by techniques, such as crosslinking, to overcome its limitations in structural stability along with potential toxicity. Here, we prepared collagen/polyethylene oxide (PEO) nanofibrous membranes with varying crosslinking degrees and their properties, such as water stability, mechanical properties, blood clotting capacity and cytocompatibility, were studied systematically. By investigating the relationship between crosslinking degree and their properties, nanofibrous membranes with improved morphology retention, blood clotting capacity and cytocompatibility have been achieved. The result of circular dichroism measurement demonstrated that a triple helical fraction around 60.5% was retained. Moreover, the electrospun collagen/PEO at crosslinking degrees above 60.6% could maintain more than 72% of its original weight and its nanofibrous morphology under physiological conditions could be well preserved for up to 7 days. Furthermore, the crosslinked collagen/PEO membrane could provide a more friendly and suitable environment to promote cell proliferation, and about 70% of the clot can be formed in 5 min. With its superior performance in water stability, hemostasis and cytocompatibility, we anticipate that this nanofibrous membrane has great potential for wound dressing.
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21
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Silantyeva EA, Nasir W, Carpenter J, Manahan O, Becker ML, Willits RK. Accelerated neural differentiation of mouse embryonic stem cells on aligned GYIGSR-functionalized nanofibers. Acta Biomater 2018; 75:129-139. [PMID: 29879551 PMCID: PMC6774047 DOI: 10.1016/j.actbio.2018.05.052] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2018] [Revised: 05/17/2018] [Accepted: 05/30/2018] [Indexed: 12/09/2022]
Abstract
Substrates for embryonic stem cell culture are typified by poorly defined xenogenic, whole proteins or cellular components that are difficult and expensive to generate, characterize, and recapitulate. Herein, the generation of well-defined scaffolds of Gly-Tyr-Ile-Gly-Ser-Arg (GYIGSR) peptide-functionalized poly(ε-caprolactone) (PCL) aligned nanofibers are used to accelerate the neural lineage commitment and differentiation of D3 mouse embryonic stem cells (mESCs). Gene expression trends and immunocytochemistry analysis were similar to laminin-coated glass, and indicated an earlier differentiation progression than D3 mESCs on laminin. Further, GYIGSR-functionalized nanofiber substrates yielded an increased gene expression of Sox1, a neural progenitor cell marker, and Tubb3, Cdh2, Syp, neuronal cell markers, at early time points. In addition, guidance of neurites was found to parallel the fiber direction. We demonstrate the fabrication of a well-defined, xeno-free functional nanofiber scaffold and demonstrates its use as a surrogate for xenogenic and complex matrixes currently used for the neural differentiation of stem cells ex vivo. STATEMENT OF SIGNIFICANCE In this paper, we report the use of GYIGSR-functionalized poly(ε-caprolactone) aligned nanofibers as a tool to accelerate the neural lineage commitment and differentiation of D3 mouse embryonic stem cells. The results indicate that functional nanofiber substrates promote faster differentiation than laminin coated substrates. The data suggest that aligned nanofibers and post-electrospinning surface modification with bioactive species can be combined to produce translationally relevant xeno-free substrates for stem cell therapy. Future development efforts are focused on additional bioactive species that are able to function as surrogates for other xenogenic factors found in differentiation media.
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Affiliation(s)
- Elena A Silantyeva
- Department of Polymer Science, The University of Akron, Akron, OH 44325, United States
| | - Wafaa Nasir
- Biomedical Engineering, The University of Akron, Akron, OH 44325, United States
| | | | - Olivia Manahan
- Department of Polymer Science, The University of Akron, Akron, OH 44325, United States
| | - Matthew L Becker
- Department of Polymer Science, The University of Akron, Akron, OH 44325, United States; Biomedical Engineering, The University of Akron, Akron, OH 44325, United States.
| | - Rebecca K Willits
- Biomedical Engineering, The University of Akron, Akron, OH 44325, United States
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22
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Bridge JC, Amer M, Morris GE, Martin NRW, Player DJ, Knox AJ, Aylott JW, Lewis MP, Rose FRAJ. Electrospun gelatin-based scaffolds as a novel 3D platform to study the function of contractile smooth muscle cells
in vitro. Biomed Phys Eng Express 2018. [DOI: 10.1088/2057-1976/aace8f] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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23
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Aijie C, Xuan L, Huimin L, Yanli Z, Yiyuan K, Yuqing L, Longquan S. Nanoscaffolds in promoting regeneration of the peripheral nervous system. Nanomedicine (Lond) 2018; 13:1067-1085. [PMID: 29790811 DOI: 10.2217/nnm-2017-0389] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
The ability to surgically repair peripheral nerve injuries is urgently needed. However, traditional tissue engineering techniques, such as autologous nerve transplantation, have some limitations. Therefore, tissue engineered autologous nerve grafts have become a suitable choice for nerve repair. Novel tissue engineering techniques derived from nanostructured conduits have been shown to be superior to other successful functional neurological structures with different scaffolds in terms of providing the required structures and properties. Additionally, different biomaterials and growth factors have been added to nerve scaffolds to produce unique biological effects that promote nerve regeneration and functional recovery. This review summarizes the application of different nanoscaffolds in peripheral nerve repair and further analyzes how the nanoscaffolds promote peripheral nerve regeneration.
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Affiliation(s)
- Chen Aijie
- Nanfang Hospital, Southern Medical University, 1838 Guangzhou Avenue North, Guangzhou, Guangdong 510515, China
- Guangdong Provincial Key Laboratory of Construction & Detection in Tissue Engineering, Guangzhou 510515, China
| | - Lai Xuan
- Nanfang Hospital, Southern Medical University, 1838 Guangzhou Avenue North, Guangzhou, Guangdong 510515, China
| | - Liang Huimin
- Nanfang Hospital, Southern Medical University, 1838 Guangzhou Avenue North, Guangzhou, Guangdong 510515, China
| | - Zhang Yanli
- Nanfang Hospital, Southern Medical University, 1838 Guangzhou Avenue North, Guangzhou, Guangdong 510515, China
| | - Kang Yiyuan
- Nanfang Hospital, Southern Medical University, 1838 Guangzhou Avenue North, Guangzhou, Guangdong 510515, China
| | - Lin Yuqing
- Nanfang Hospital, Southern Medical University, 1838 Guangzhou Avenue North, Guangzhou, Guangdong 510515, China
| | - Shao Longquan
- Nanfang Hospital, Southern Medical University, 1838 Guangzhou Avenue North, Guangzhou, Guangdong 510515, China
- Guangdong Provincial Key Laboratory of Construction & Detection in Tissue Engineering, Guangzhou 510515, China
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24
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Jie Y, Cai Z, Li S, Xie Z, Ma M, Huang X. Hydroxyapatite nucleation and growth on collagen electrospun fibers controlled with different mineralization conditions and phosvitin. Macromol Res 2017. [DOI: 10.1007/s13233-017-5091-z] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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25
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Law JX, Liau LL, Saim A, Yang Y, Idrus R. Electrospun Collagen Nanofibers and Their Applications in Skin Tissue Engineering. Tissue Eng Regen Med 2017; 14:699-718. [PMID: 30603521 DOI: 10.1007/s13770-017-0075-9] [Citation(s) in RCA: 85] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2017] [Revised: 07/17/2017] [Accepted: 07/20/2017] [Indexed: 11/25/2022] Open
Abstract
Electrospinning is a simple and versatile technique to fabricate continuous fibers with diameter ranging from micrometers to a few nanometers. To date, the number of polymers that have been electrospun has exceeded 200. In recent years, electrospinning has become one of the most popular scaffold fabrication techniques to prepare nanofiber mesh for tissue engineering applications. Collagen, the most abundant extracellular matrix protein in the human body, has been electrospun to fabricate biomimetic scaffolds that imitate the architecture of native human tissues. As collagen nanofibers are mechanically weak in nature, it is commonly cross-linked or blended with synthetic polymers to improve the mechanical strength without compromising the biological activity. Electrospun collagen nanofiber mesh has high surface area to volume ratio, tunable diameter and porosity, and excellent biological activity to regulate cell function and tissue formation. Due to these advantages, collagen nanofibers have been tested for the regeneration of a myriad of tissues and organs. In this review, we gave an overview of electrospinning, encompassing the history, the instrument settings, the spinning process and the parameters that affect fiber formation, with emphasis given to collagen nanofibers' fabrication and application, especially the use of collagen nanofibers in skin tissue engineering.
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Affiliation(s)
- Jia Xian Law
- 1Tissue Engineering Centre, Universiti Kebangsaan Malaysia Medical Centre, 56000 Kuala Lumpur, Malaysia
| | - Ling Ling Liau
- 2Department of Physiology, Faculty of Medicine, Universiti Kebangsaan Malaysia Medical Centre, Jalan Yaacob Latif, Bandar Tun Razak, Cheras, 56000 Kuala Lumpur, Malaysia
| | - Aminuddin Saim
- Ear, Nose and Throat Consultant Clinic, Ampang Puteri Specialist Hospital, 68000 Ampang, Selangor Malaysia
| | - Ying Yang
- 4Institute for Science and Technology in Medicine, School of Medicine, Keele University, Stoke-on-Trent, ST4 7QB UK
| | - Ruszymah Idrus
- 2Department of Physiology, Faculty of Medicine, Universiti Kebangsaan Malaysia Medical Centre, Jalan Yaacob Latif, Bandar Tun Razak, Cheras, 56000 Kuala Lumpur, Malaysia
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26
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Jakobsson A, Ottosson M, Zalis MC, O'Carroll D, Johansson UE, Johansson F. Three-dimensional functional human neuronal networks in uncompressed low-density electrospun fiber scaffolds. NANOMEDICINE-NANOTECHNOLOGY BIOLOGY AND MEDICINE 2017; 13:1563-1573. [DOI: 10.1016/j.nano.2016.12.023] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/13/2016] [Revised: 11/04/2016] [Accepted: 12/30/2016] [Indexed: 11/25/2022]
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27
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Farrell K, Joshi J, Kothapalli CR. Injectable uncrosslinked biomimetic hydrogels as candidate scaffolds for neural stem cell delivery. J Biomed Mater Res A 2016; 105:790-805. [PMID: 27798959 DOI: 10.1002/jbm.a.35956] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2016] [Revised: 10/03/2016] [Accepted: 10/28/2016] [Indexed: 12/27/2022]
Abstract
Mammalian central nervous system has a limited ability for self-repair under diseased or injury conditions. Repair strategies focused on exogenously delivering autologous neural stem cells (NSCs) to replace lost neuronal populations and axonal pathways in situ, and promote endogenous repair mechanisms are gaining traction. Successful outcomes are contingent on selecting an appropriate delivery vehicle for injecting cells that promotes cell retention and survival, elicits differentiation to desired lineages, and enhances axonal outgrowth upon integration into the host tissue. Hydrogels made of varying compositions of collagen, laminin, hyaluronic acid (HA), and chondroitin sulfate proteoglycan (CSPG) were developed, with no external crosslinking agents, to mimic the native extracellular matrix composition. The physical (porosity, pore-size, gel integrity, swelling ratio, and enzymatic degradation), mechanical (viscosity, storage and loss moduli, Young's modulus, creep, and stress-relaxation), and biological (cell survival, differentiation, neurite outgrowth, and integrin expression) characteristics of these hydrogels were assessed. These hydrogels exhibited excellent injectability, retained gel integrity, and matched the mechanical moduli of native brain tissue, possibly due to natural collagen fibril polymerization and physical-crosslinking between HA molecules and collagen fibrils. Depending on the composition, these hydrogels promoted cell survival, neural differentiation, and neurite outgrowth, as evident from immunostaining and western blots. These cellular outcomes were facilitated by cellular binding via α6 , β1 , and CD44 surface integrins to these hydrogels. Results attest to the utility of uncrosslinked, ECM-mimicking hydrogels to deliver NSCs for tissue engineering and regenerative medicine applications. © 2016 Wiley Periodicals, Inc. J Biomed Mater Res Part A: 105A: 790-805, 2017.
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Affiliation(s)
- Kurt Farrell
- Department of Chemical and Biomedical Engineering, Cleveland State University, Cleveland, Ohio, 44115
| | - Jyotsna Joshi
- Department of Chemical and Biomedical Engineering, Cleveland State University, Cleveland, Ohio, 44115
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28
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Putzu M, Causa F, Nele V, de Torre IG, Rodriguez-Cabello JC, Netti PA. Elastin-like-recombinamers multilayered nanofibrous scaffolds for cardiovascular applications. Biofabrication 2016; 8:045009. [PMID: 27845938 DOI: 10.1088/1758-5090/8/4/045009] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Coronary angioplasty is the most widely used technique for removing atherosclerotic plaques in blood vessels. The regeneration of the damaged intima layer after this treatment is still one of the major challenges in the field of cardiovascular tissue engineering. Different polymers have been used in scaffold manufacturing in order to improve tissue regeneration. Elastin-mimetic polymers are a new class of molecules that have been synthesized and used to obtain small diameter fibers with specific morphological characteristics. Elastin-like polymers produced by recombinant techniques and called elastin-like recombinamers (ELRs) are particularly promising due to their high degree of functionalization. Generally speaking, ELRs can show more complex molecular designs and a tighter control of their sequence than other chemically synthetized polymers Rodriguez Cabello et al (2009 Polymer 50 5159-69, 2011 Nanomedicine 6 111-22). For the fabrication of small diameter fibers, different ELRs were dissolved in 2,2,2-fluoroethanol (TFE). Dynamic light scattering was used to identify the transition temperature and get a deep characterization of the transition behavior of the recombinamers. In this work, we describe the use of electrospinning technique for the manufacturing of an elastic fibrous scaffold; the obtained fibers were characterized and their cytocompatibility was tested in vitro. A thorough study of the influence of voltage, flow rate and distance was carried out in order to determine the appropriate parameters to obtain fibrous mats without beads and defects. Moreover, using a rotating mandrel, we fabricated a tubular scaffold in which ELRs containing different cell adhesion sequences (mainly REDV and RGD) were collected. The stability of the scaffold was improved by using genipin as a crosslinking agent. Genipin-ELRs crosslinked scaffolds show a good stability and fiber morphology. Human umbilical vein endothelial cells were used to assess the in vitro bioactivity of the cell adhesion domains within the backbone of the ELRs.
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Affiliation(s)
- M Putzu
- Dipartimento di Ingegneria Chimica, dei Materiali e della Produzione Industriale (DICMAPI), University 'Federico II', Piazzale Tecchio 80, 80125 Naples, Italy. Interdisciplinary Research Centre on Biomaterials (CRIB) University of Naples Federico II Piazzale Tecchio 80, 80125 Napoli, Italy
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29
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Dulnik J, Denis P, Sajkiewicz P, Kołbuk D, Choińska E. Biodegradation of bicomponent PCL/gelatin and PCL/collagen nanofibers electrospun from alternative solvent system. Polym Degrad Stab 2016. [DOI: 10.1016/j.polymdegradstab.2016.05.022] [Citation(s) in RCA: 50] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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30
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Mishra R, Raina DB, Pelkonen M, Lidgren L, Tägil M, Kumar A. Study of in Vitro and in Vivo Bone Formation in Composite Cryogels and the Influence of Electrical Stimulation. Int J Biol Sci 2015; 11:1325-36. [PMID: 26535027 PMCID: PMC4624309 DOI: 10.7150/ijbs.13139] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2015] [Accepted: 08/08/2015] [Indexed: 11/22/2022] Open
Abstract
This work studies osteoinduction and bone conduction in polyvinyl alcohol-tetraethylorthosilicate-alginate-calcium oxide (PTAC) biocomposite cryogels along with the synergistic effect of electrical stimulation. In vitro osteoinduction of C2C12 myoblast towards osteogenic lineage is demonstrated through alkaline phosphatase assay, scanning electron microscopy and energy dispersive X-ray spectroscopy. These results were followed by in vivo implantation studies of PTAC biocomposite cryogel scaffolds in the bone conduction chamber model depicting bone formation after 24 days based on immunohistological staining for osteogenic markers, i.e., collagen type I (Col I), osteocalcin (OCN), osteopontin (OPN) and bone sialoprotein (BSP). Further, osteogenic differentiation of murine mesenchymal stem cells was studied with and without electrical stimulation. The q-PCR analysis shows that the electrically stimulated cryogels exhibit ~ 6 folds higher collagen type I and ~ 10 folds higher osteopontin mRNA level, in comparison to the unstimulated cryogels. Thus, PTAC biocomposite cryogels present osteoinductive and osteoconductive properties during in vitro and in vivo studies and support osteogenic differentiation of mesenchymal stem cells under the influence of electrical stimulation.
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Affiliation(s)
- Ruchi Mishra
- 1. Department of Biological Sciences and Bioengineering, Indian Institute of Technology Kanpur, Kanpur-208016, UP, India
| | - Deepak Bushan Raina
- 1. Department of Biological Sciences and Bioengineering, Indian Institute of Technology Kanpur, Kanpur-208016, UP, India ; 2. Department of Orthopedics, Clinical Sciences, Lund University, Lund-221 85, Sweden
| | - Mea Pelkonen
- 2. Department of Orthopedics, Clinical Sciences, Lund University, Lund-221 85, Sweden
| | - Lars Lidgren
- 2. Department of Orthopedics, Clinical Sciences, Lund University, Lund-221 85, Sweden
| | - Magnus Tägil
- 2. Department of Orthopedics, Clinical Sciences, Lund University, Lund-221 85, Sweden
| | - Ashok Kumar
- 1. Department of Biological Sciences and Bioengineering, Indian Institute of Technology Kanpur, Kanpur-208016, UP, India
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Jhala D, Vasita R. A Review on Extracellular Matrix Mimicking Strategies for an Artificial Stem Cell Niche. POLYM REV 2015. [DOI: 10.1080/15583724.2015.1040552] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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Highly elastic and suturable electrospun poly(glycerol sebacate) fibrous scaffolds. Acta Biomater 2015; 18:30-9. [PMID: 25686558 DOI: 10.1016/j.actbio.2015.02.005] [Citation(s) in RCA: 93] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2014] [Revised: 12/18/2014] [Accepted: 02/06/2015] [Indexed: 12/24/2022]
Abstract
Poly(glycerol sebacate) (PGS) is a thermally-crosslinked elastomer suitable for tissue regeneration due to its elasticity, degradability, and pro-regenerative inflammatory response. Pores in PGS scaffolds are typically introduced by porogen leaching, which compromises strength. Methods for producing fibrous PGS scaffolds are very limited. Electrospinning is the most widely used method for laboratory scale production of fibrous scaffolds. Electrospinning PGS by itself is challenging, necessitating a carrier polymer which can affect material properties if not removed. We report a simple electrospinning method to produce distinct PGS fibers while maintaining the desired mechanical and cytocompatibility properties of thermally crosslinked PGS. Fibrous PGS demonstrated 5 times higher tensile strength and increased suture retention compared to porous PGS foams. Additionally, similar modulus and elastic recovery were observed. A final advantage of fibrous PGS sheets is the ability to create multi-laminate constructs due to fiber bonding that occurs during thermal crosslinking. Taken together, these highly elastic fibrous PGS scaffolds will enable new approaches in tissue engineering and regenerative medicine.
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Abstract
In recent years, electrospinning has increased in popularity as a processing technique for obtaining nanometer-to-micron diameter polymer fibers collected to form a nonwoven scaffold. It possesses the ability to process collagen into nanofibrous scaffolds which have been used for a number of applications, such as artificial vascular grafts and for wound repair. This paper offers a review of some of the basic yet essential aspects of producing nanofibrous scaffolds of collagen by electrospinning. A primer to collagen structure, cross-linking techniques, and electrospinning principles is provided, along with some of the many applications of these unique materials.
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Gonçalves F, Bentini R, Burrows MC, Carreira ACO, Kossugue PM, Sogayar MC, Catalani LH. Hybrid Membranes of PLLA/Collagen for Bone Tissue Engineering: A Comparative Study of Scaffold Production Techniques for Optimal Mechanical Properties and Osteoinduction Ability. MATERIALS 2015; 8:408-423. [PMID: 28787946 PMCID: PMC5455262 DOI: 10.3390/ma8020408] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/10/2014] [Revised: 12/23/2014] [Accepted: 01/19/2015] [Indexed: 01/16/2023]
Abstract
Synthetic and natural polymer association is a promising tool in tissue engineering. The aim of this study was to compare five methodologies for producing hybrid scaffolds for cell culture using poly-l-lactide (PLLA) and collagen: functionalization of PLLA electrospun by (1) dialkylamine and collagen immobilization with glutaraldehyde and by (2) hydrolysis and collagen immobilization with carbodiimide chemistry; (3) co-electrospinning of PLLA/chloroform and collagen/hexafluoropropanol (HFP) solutions; (4) co-electrospinning of PLLA/chloroform and collagen/acetic acid solutions and (5) electrospinning of a co-solution of PLLA and collagen using HFP. These materials were evaluated based on their morphology, mechanical properties, ability to induce cell proliferation and alkaline phosphatase activity upon submission of mesenchymal stem cells to basal or osteoblastic differentiation medium (ODM). Methods (1) and (2) resulted in a decrease in mechanical properties, whereas methods (3), (4) and (5) resulted in materials of higher tensile strength and osteogenic differentiation. Materials yielded by methods (2), (3) and (5) promoted osteoinduction even in the absence of ODM. The results indicate that the scaffold based on the PLLA/collagen blend exhibited optimal mechanical properties and the highest capacity for osteodifferentiation and was the best choice for collagen incorporation into PLLA in bone repair applications.
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Affiliation(s)
- Flávia Gonçalves
- Instituto de Química, Universidade de São Paulo, Av. Prof. Lineu Prestes, 748, 05508-000 São Paulo, SP, Brazil.
| | - Ricardo Bentini
- Instituto de Química, Universidade de São Paulo, Av. Prof. Lineu Prestes, 748, 05508-000 São Paulo, SP, Brazil.
| | - Mariana C Burrows
- Instituto de Química, Universidade de São Paulo, Av. Prof. Lineu Prestes, 748, 05508-000 São Paulo, SP, Brazil.
| | - Ana C O Carreira
- Instituto de Química, Universidade de São Paulo, Av. Prof. Lineu Prestes, 748, 05508-000 São Paulo, SP, Brazil.
- Faculdade de Medicina, Núcleo de Terapia Celular e Molecular (NUCEL)-Núcleo de Estudos e Terapia Celular e Molecular (NETCEM), Universidade de São Paulo, Rua Pangaré 100, 05360-130 São Paulo, SP, Brazil.
| | - Patricia M Kossugue
- Faculdade de Medicina, Núcleo de Terapia Celular e Molecular (NUCEL)-Núcleo de Estudos e Terapia Celular e Molecular (NETCEM), Universidade de São Paulo, Rua Pangaré 100, 05360-130 São Paulo, SP, Brazil.
| | - Mari C Sogayar
- Instituto de Química, Universidade de São Paulo, Av. Prof. Lineu Prestes, 748, 05508-000 São Paulo, SP, Brazil.
- Faculdade de Medicina, Núcleo de Terapia Celular e Molecular (NUCEL)-Núcleo de Estudos e Terapia Celular e Molecular (NETCEM), Universidade de São Paulo, Rua Pangaré 100, 05360-130 São Paulo, SP, Brazil.
| | - Luiz H Catalani
- Instituto de Química, Universidade de São Paulo, Av. Prof. Lineu Prestes, 748, 05508-000 São Paulo, SP, Brazil.
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Denis P, Dulnik J, Sajkiewicz P. Electrospinning and Structure of Bicomponent Polycaprolactone/Gelatin Nanofibers Obtained Using Alternative Solvent System. INT J POLYM MATER PO 2014. [DOI: 10.1080/00914037.2014.945208] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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McMurtrey RJ. Patterned and functionalized nanofiber scaffolds in three-dimensional hydrogel constructs enhance neurite outgrowth and directional control. J Neural Eng 2014; 11:066009. [PMID: 25358624 DOI: 10.1088/1741-2560/11/6/066009] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
OBJECTIVE Neural tissue engineering holds incredible potential to restore functional capabilities to damaged neural tissue. It was hypothesized that patterned and functionalized nanofiber scaffolds could control neurite direction and enhance neurite outgrowth. APPROACH A method of creating aligned electrospun nanofibers was implemented and fiber characteristics were analyzed using environmental scanning electron microscopy. Nanofibers were composed of polycaprolactone (PCL) polymer, PCL mixed with gelatin, or PCL with a laminin coating. Three-dimensional hydrogels were then integrated with embedded aligned nanofibers to support neuronal cell cultures. Microscopic images were captured at high-resolution in single and multi-focal planes with eGFP-expressing neuronal SH-SY5Y cells in a fluorescent channel and nanofiber scaffolding in another channel. Neuronal morphology and neurite tracking of nanofibers were then analyzed in detail. MAIN RESULTS Aligned nanofibers were shown to enable significant control over the direction of neurite outgrowth in both two-dimensional (2D) and three-dimensional (3D) neuronal cultures. Laminin-functionalized nanofibers in 3D hyaluronic acid (HA) hydrogels enabled significant alignment of neurites with nanofibers, enabled significant neurite tracking of nanofibers, and significantly increased the distance over which neurites could extend. Specifically, the average length of neurites per cell in 3D HA constructs with laminin-functionalized nanofibers increased by 66% compared to the same laminin fibers on 2D laminin surfaces, increased by 59% compared to 2D laminin-coated surface without fibers, and increased by 1052% compared to HA constructs without fibers. Laminin functionalization of fibers also doubled average neurite length over plain PCL fibers in the same 3D HA constructs. In addition, neurites also demonstrated tracking directly along the fibers, with 66% of neurite lengths directly tracking laminin-coated fibers in 3D HA constructs, which was a 65% relative increase in neurite tracking compared to plain PCL fibers in the same 3D HA constructs and a 213% relative increase over laminin-coated fibers on 2D laminin-coated surfaces. SIGNIFICANCE This work demonstrates the ability to create unique 3D neural tissue constructs using a combined system of hydrogel and nanofiber scaffolding. Importantly, patterned and biofunctionalized nanofiber scaffolds that can control direction and increase length of neurite outgrowth in three-dimensions hold much potential for neural tissue engineering. This approach offers advancements in the development of implantable neural tissue constructs that enable control of neural development and reproduction of neuroanatomical pathways, with the ultimate goal being the achievement of functional neural regeneration.
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Affiliation(s)
- Richard J McMurtrey
- Institute of Biomedical Engineering, Department of Engineering Science, Old Road Campus Research Building, University of Oxford, Oxford OX3 7DQ, UK. Institute of Neural Regeneration and Tissue Engineering, Highland, UT 84003, US
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Fiorani A, Gualandi C, Panseri S, Montesi M, Marcacci M, Focarete ML, Bigi A. Comparative performance of collagen nanofibers electrospun from different solvents and stabilized by different crosslinkers. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2014; 25:2313-2321. [PMID: 24664673 DOI: 10.1007/s10856-014-5196-2] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/10/2014] [Accepted: 03/12/2014] [Indexed: 06/03/2023]
Abstract
Collagen electrospun scaffolds well reproduce the structure of the extracellular matrix (ECM) of natural tissues by coupling high biomimetism of the biological material with the fibrous morphology of the protein. Structural properties of collagen electrospun fibers are still a debated subject and there are conflicting reports in the literature addressing the presence of ultrastructure of collagen in electrospun fibers. In this work collagen type I was successfully electrospun from two different solvents, trifluoroethanol (TFE) and dilute acetic acid (AcOH). Characterization of collagen fibers was performed by means of SEM, ATR-IR, Circular Dichroism and WAXD. We demonstrated that collagen fibers contained a very low amount of triple helix with respect to pristine collagen (18 and 16% in fibers electrospun from AcOH and TFE, respectively) and that triple helix denaturation occurred during polymer dissolution. Collagen scaffolds were crosslinked by using 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide (EDC), a commonly employed crosslinker for electrospun collagen, and 1,4-butanediol diglycidyl ether (BDDGE), that was tested for the first time in this work as crosslinking agent for collagen in the form of electrospun fibers. We demonstrated that BDDGE successfully crosslinked collagen and preserved at the same time the scaffold fibrous morphology, while scaffolds crosslinked with EDC completely lost their porous structure. Mesenchymal stem cell experiments demonstrated that collagen scaffolds crosslinked with BDDGE are biocompatible and support cell attachment.
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Affiliation(s)
- Andrea Fiorani
- Department of Chemistry ''G. Ciamician'' and National Consortium of Materials Science and Technology (INSTM, Bologna RU), University of Bologna, Bologna, Italy
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Wang R, Levi-Polyanchenko N, Morykwas M, Argenta L, Wagner WD. Novel nanofiber-based material for endovascular scaffolds. J Biomed Mater Res A 2014; 103:1150-8. [DOI: 10.1002/jbm.a.35267] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2014] [Revised: 06/17/2014] [Accepted: 06/25/2014] [Indexed: 12/15/2022]
Affiliation(s)
- Rui Wang
- Department of Plastic and Reconstructive Surgery; Wake Forest University School of Medicine; Medical Center Blvd Winston-Salem North Carolina 27157
- Virginia Tech - Wake Forest University School of Biomedical Engineering and Science; Medical Center Blvd Winston-Salem North Carolina 27157
| | - Nicole Levi-Polyanchenko
- Department of Plastic and Reconstructive Surgery; Wake Forest University School of Medicine; Medical Center Blvd Winston-Salem North Carolina 27157
- Virginia Tech - Wake Forest University School of Biomedical Engineering and Science; Medical Center Blvd Winston-Salem North Carolina 27157
| | - Michael Morykwas
- Department of Plastic and Reconstructive Surgery; Wake Forest University School of Medicine; Medical Center Blvd Winston-Salem North Carolina 27157
- Virginia Tech - Wake Forest University School of Biomedical Engineering and Science; Medical Center Blvd Winston-Salem North Carolina 27157
| | - Louis Argenta
- Department of Plastic and Reconstructive Surgery; Wake Forest University School of Medicine; Medical Center Blvd Winston-Salem North Carolina 27157
| | - William D. Wagner
- Department of Plastic and Reconstructive Surgery; Wake Forest University School of Medicine; Medical Center Blvd Winston-Salem North Carolina 27157
- Virginia Tech - Wake Forest University School of Biomedical Engineering and Science; Medical Center Blvd Winston-Salem North Carolina 27157
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Abstract
Injury to the CNS typically results in significant morbidity and endogenous repair mechanisms are limited in their ability to restore fully functional CNS tissue. Biologic scaffolds composed of individual purified components have been shown to facilitate functional tissue reconstruction following CNS injury. Extracellular matrix scaffolds derived from mammalian tissues retain a number of bioactive molecules and their ability for CNS repair has recently been recognized. In addition, novel biomaterials for dural mater repairs are of clinical interest as the dura provides barrier function and maintains homeostasis to CNS. The present article describes the application of regenerative medicine principles to the CNS tissues and dural mater repair. While many approaches have been exploring the use of cells and/or therapeutic molecules, the strategies described herein focus upon the use of extracellular matrix scaffolds derived from mammalian tissues that are free of cells and exogenous factors.
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Affiliation(s)
- Fanwei Meng
- McGowan Institute for Regenerative Medicine, University of Pittsburgh, Pittsburgh, PA 15203, USA
- Department of Surgery, University of Pittsburgh, Pittsburgh, PA 15203, USA
| | - Michel Modo
- McGowan Institute for Regenerative Medicine, University of Pittsburgh, Pittsburgh, PA 15203, USA
- Department of Radiology, University of Pittsburgh, Pittsburgh, PA 15203, USA
| | - Stephen F Badylak
- McGowan Institute for Regenerative Medicine, University of Pittsburgh, Pittsburgh, PA 15203, USA
- Department of Surgery, University of Pittsburgh, Pittsburgh, PA 15203, USA
- Department of Bioengineering, University of Pittsburgh, Pittsburgh, PA 15203, USA
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40
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Zhu W, O'Brien C, O'Brien JR, Zhang LG. 3D nano/microfabrication techniques and nanobiomaterials for neural tissue regeneration. Nanomedicine (Lond) 2014; 9:859-75. [DOI: 10.2217/nnm.14.36] [Citation(s) in RCA: 86] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Abstract
Injuries of the nervous system occur commonly among people of many different ages and backgrounds. Currently, there are no effective strategies to improve neural regeneration; however, tissue engineering provides a promising avenue for regeneration of many tissue types, including the neural context. Functional nerve conduits derived from tissue engineering techniques present bioengineered 3D artificial substitutes for implantation and rehabilitation of injured nerves. In particular, nanotechnology as a versatile vehicle to create biomimetic nanostructured tissue-engineered neural scaffolds provides great potential for the development of innovative and successful nerve grafts. Nanostructured conduits derived from traditional and novel tissue engineering techniques have been shown to be superior for successful neural function construction due to a high degree of biomimetic character. In this paper, we will focus on current progress in developing 3D nano/microstructured neural scaffolds via electrospinning, emerging 3D printing and self-assembly techniques, nanobiomaterials and bioactive cues for enhanced neural tissue regeneration.
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Affiliation(s)
- Wei Zhu
- Department of Mechanical & Aerospace Engineering, The George Washington University, Washington, DC 20052, USA
| | - Christopher O'Brien
- Department of Mechanical & Aerospace Engineering, The George Washington University, Washington, DC 20052, USA
| | - Joseph R O'Brien
- Departments of Orthopedic Surgery & Neurological Surgery, The George Washington University, Washington, DC 20052, USA
| | - Lijie Grace Zhang
- Department of Mechanical & Aerospace Engineering, The George Washington University, Washington, DC 20052, USA
- Department of Medicine, The George Washington University, Washington, DC 20052, USA
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41
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Walters BD, Stegemann JP. Strategies for directing the structure and function of three-dimensional collagen biomaterials across length scales. Acta Biomater 2014; 10:1488-501. [PMID: 24012608 PMCID: PMC3947739 DOI: 10.1016/j.actbio.2013.08.038] [Citation(s) in RCA: 135] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2013] [Revised: 08/17/2013] [Accepted: 08/28/2013] [Indexed: 12/16/2022]
Abstract
Collagen type I is a widely used natural biomaterial that has found utility in a variety of biological and medical applications. Its well-characterized structure and role as an extracellular matrix protein make it a highly relevant material for controlling cell function and mimicking tissue properties. Collagen type I is abundant in a number of tissues, and can be isolated as a purified protein. This review focuses on hydrogel biomaterials made by reconstituting collagen type I from a solubilized form, with an emphasis on in vitro studies in which collagen structure can be controlled. The hierarchical structure of collagen from the nanoscale to the macroscale is described, with an emphasis on how structure is related to function across scales. Methods of reconstituting collagen into hydrogel materials are presented, including molding of macroscopic constructs, creation of microscale modules and electrospinning of nanoscale fibers. The modification of collagen biomaterials to achieve the desired structures and functions is also addressed, with particular emphasis on mechanical control of collagen structure, creation of collagen composite materials and crosslinking of collagenous matrices. Biomaterials scientists have made remarkable progress in rationally designing collagen-based biomaterials and in applying them both to the study of biology and for therapeutic benefit. This broad review illustrates recent examples of techniques used to control collagen structure and thereby to direct its biological and mechanical functions.
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Affiliation(s)
- B D Walters
- Department of Biomedical Engineering, University of Michigan, 1101 Beal Avenue, Ann Arbor, MI 48109, USA
| | - J P Stegemann
- Department of Biomedical Engineering, University of Michigan, 1101 Beal Avenue, Ann Arbor, MI 48109, USA.
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42
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Siriwardane ML, DeRosa K, Collins G, Pfister BJ. Controlled formation of cross-linked collagen fibers for neural tissue engineering applications. Biofabrication 2014; 6:015012. [PMID: 24589999 DOI: 10.1088/1758-5082/6/1/015012] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Fibrous scaffolds engineered to direct the growth of tissues can be important in forming architecturally functional tissue such as aligning regenerating nerves with their target. Collagen is a commonly used substrate used for neuronal growth applications in the form of surface coatings and hydrogels. The wet spinning technique can create collagen fibers without the use of organic solvents and is typically accomplished by extruding a collagen dispersion into a coagulation bath. To create well-controlled and uniform collagen fibers, we developed an automatic wet spinning device with precise control over the spinning and fiber collection parameters. A fiber collection belt allowed the continuous formation of very soft and delicate fibers up to half a meter in length. Wet-spun collagen fibers were characterized by tensile and thermal behavior, diameter uniformity, the swelling response in phosphate buffered saline and their biocompatibility with dorsal root ganglion (DRG) neurons and Schwann cells. Fibers formed from 0.75% weight by volume (w/v) collagen dispersions formed the best fibers in terms of tensile behavior and fiber uniformity. Fibers post-treated with the cross-linkers glutaraldehyde and genipin exhibited increased mechanical stability and reduced swelling. Importantly, genipin-treated fibers were conducive to DRG neurons and Schwann cell survival and growth, which validated the use of this cross-linker for neural tissue engineering applications.
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Affiliation(s)
- Mevan L Siriwardane
- Department of Biomedical Engineering, New Jersey Institute of Technology, Newark, NJ, USA. Graduate School of Biomedical Sciences, University of Medicine and Dentistry of New Jersey, Newark, NJ, USA
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43
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Kim HS, Yoo HS. Therapeutic application of electrospun nanofibrous meshes. Nanomedicine (Lond) 2014; 9:517-33. [DOI: 10.2217/nnm.13.224] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Fabricating tissue architecture-mimicking scaffolds is one of the major challenges in the field of tissue engineering. Electrospun nanofibers have been considered as potent techniques for fabricating fibrous scaffolds biomimicking extracellular frameworks. Therapeutic agent-incorporated nanofibrous meshes have widely served as excellent substrates for adhesion, proliferation and differentiation. Many drugs, proteins and nucleic acids were incorporated into the scaffolds for regeneration of skin, musculoskeletal, neural and vascular tissue engineering in aims to control the release of the therapeutic agents. In the current article, we focus on introducing various fabrication techniques for electrospun nanofiber-based scaffolds and subsequent functionalization of nanofibers for therapeutic purposes. We also detail how the therapeutic nanofibrous meshes can be employed in the field of tissue engineering.
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Affiliation(s)
- Hye Sung Kim
- Department of Biomedical Materials Engineering, School of Bioscience & Bioengineering, Kangwon National University, Chuncheon 200-701, Republic of Korea
| | - Hyuk Sang Yoo
- Department of Biomedical Materials Engineering, School of Bioscience & Bioengineering, Kangwon National University, Chuncheon 200-701, Republic of Korea
- Institute of Bioscience & Biotechnology, Kangwon National University, Republic of Korea
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44
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Ingavle GC, Leach JK. Advancements in electrospinning of polymeric nanofibrous scaffolds for tissue engineering. TISSUE ENGINEERING PART B-REVIEWS 2013; 20:277-93. [PMID: 24004443 DOI: 10.1089/ten.teb.2013.0276] [Citation(s) in RCA: 145] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Polymeric nanofibers have potential as tissue engineering scaffolds, as they mimic the nanoscale properties and structural characteristics of native extracellular matrix (ECM). Nanofibers composed of natural and synthetic polymers, biomimetic composites, ceramics, and metals have been fabricated by electrospinning for various tissue engineering applications. The inherent advantages of electrospinning nanofibers include the generation of substrata with high surface area-to-volume ratios, the capacity to precisely control material and mechanical properties, and a tendency for cellular in-growth due to interconnectivity within the pores. Furthermore, the electrospinning process affords the opportunity to engineer scaffolds with micro- to nanoscale topography similar to the natural ECM. This review describes the fundamental aspects of the electrospinning process when applied to spinnable natural and synthetic polymers; particularly, those parameters that influence fiber geometry, morphology, mesh porosity, and scaffold mechanical properties. We describe cellular responses to fiber morphology achieved by varying processing parameters and highlight successful applications of electrospun nanofibrous scaffolds when used to tissue engineer bone, skin, and vascular grafts.
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Affiliation(s)
- Ganesh C Ingavle
- 1 Department of Biomedical Engineering, University of California Davis , Davis, California
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45
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Lin HY, Kuo YJ, Chang SH, Ni TS. Characterization of electrospun nanofiber matrices made of collagen blends as potential skin substitutes. Biomed Mater 2013; 8:025009. [DOI: 10.1088/1748-6041/8/2/025009] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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46
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Higuchi A, Ling QD, Chang Y, Hsu ST, Umezawa A. Physical Cues of Biomaterials Guide Stem Cell Differentiation Fate. Chem Rev 2013; 113:3297-328. [DOI: 10.1021/cr300426x] [Citation(s) in RCA: 335] [Impact Index Per Article: 30.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Akon Higuchi
- Department of Chemical and Materials
Engineering, National Central University, Jhongli, Taoyuan 32001, Taiwan
- Department of Reproductive Biology, National Research Institute for Child Health and Development, 2-10-1 Okura,
Setagaya-ku, Tokyo 157-8535, Japan
- Cathay Medical Research Institute, Cathay General Hospital, No. 32, Ln 160, Jian-Cheng Road, Hsi-Chi City, Taipei 221, Taiwan
| | - Qing-Dong Ling
- Cathay Medical Research Institute, Cathay General Hospital, No. 32, Ln 160, Jian-Cheng Road, Hsi-Chi City, Taipei 221, Taiwan
- Institute of Systems Biology
and Bioinformatics, National Central University, No. 300 Jhongda Rd., Jhongli, Taoyuan 32001, Taiwan
| | - Yung Chang
- Department of Chemical Engineering, R&D Center for Membrane Technology, Chung Yuan Christian University, 200 Chung-Bei Rd., Jhongli, Taoyuan 320, Taiwan
| | - Shih-Tien Hsu
- Taiwan Landseed Hospital, 77 Kuangtai Road, Pingjen City, Tao-Yuan
County 32405, Taiwan
| | - Akihiro Umezawa
- Department of Reproductive Biology, National Research Institute for Child Health and Development, 2-10-1 Okura,
Setagaya-ku, Tokyo 157-8535, Japan
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47
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Rnjak-Kovacina J, Wise SG, Li Z, Maitz PK, Young CJ, Wang Y, Weiss AS. Electrospun synthetic human elastin:collagen composite scaffolds for dermal tissue engineering. Acta Biomater 2012; 8:3714-22. [PMID: 22750739 DOI: 10.1016/j.actbio.2012.06.032] [Citation(s) in RCA: 86] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2012] [Revised: 05/15/2012] [Accepted: 06/21/2012] [Indexed: 10/28/2022]
Abstract
We present an electrospun synthetic human elastin:collagen composite scaffold aimed at dermal tissue engineering. The panel of electrospun human tropoelastin and ovine type I collagen blends comprised 80% tropoelastin+20% collagen, 60% tropoelastin+40% collagen and 50% tropoelastin+50% collagen. Electrospinning efficiency decreased with increasing collagen content under the conditions used. Physical and mechanical characterization encompassed fiber morphology, porosity, pore size and modulus, which were prioritized to identify the optimal candidate for dermal tissue regeneration. Scaffolds containing 80% tropoelastin and 20% collagen (80T20C) were selected on this basis for further cell interaction and animal implantation studies. 80T20C enhanced proliferation and migration rates of dermal fibroblasts in vitro and were well tolerated in a mouse subcutaneous implantation study where they persisted over 6 weeks. The 80T20C scaffolds supported fibroblast infiltration, de novo collagen deposition and new capillary formation.
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48
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Jiang Q, Reddy N, Zhang S, Roscioli N, Yang Y. Water-stable electrospun collagen fibers from a non-toxic solvent and crosslinking system. J Biomed Mater Res A 2012; 101:1237-47. [DOI: 10.1002/jbm.a.34422] [Citation(s) in RCA: 82] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2012] [Revised: 08/10/2012] [Accepted: 08/14/2012] [Indexed: 01/09/2023]
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49
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Zhao C, Tan A, Pastorin G, Ho HK. Nanomaterial scaffolds for stem cell proliferation and differentiation in tissue engineering. Biotechnol Adv 2012; 31:654-68. [PMID: 22902273 DOI: 10.1016/j.biotechadv.2012.08.001] [Citation(s) in RCA: 146] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2012] [Revised: 07/31/2012] [Accepted: 08/01/2012] [Indexed: 02/08/2023]
Abstract
Tissue engineering is a clinically driven field and has emerged as a potential alternative to organ transplantation. The cornerstone of successful tissue engineering rests upon two essential elements: cells and scaffolds. Recently, it was found that stem cells have unique capabilities of self-renewal and multilineage differentiation to serve as a versatile cell source, while nanomaterials have lately emerged as promising candidates in producing scaffolds able to better mimic the nanostructure in natural extracellular matrix and to efficiently replace defective tissues. This article, therefore, reviews the key developments in tissue engineering, where the combination of stem cells and nanomaterial scaffolds has been utilized over the past several years. We consider the high potential, as well as the main issues related to the application of stem cells and nanomaterial scaffolds for a range of tissues including bone, cartilage, nerve, liver, eye etc. Promising in vitro results such as efficient attachment, proliferation and differentiation of stem cells have been compiled in a series of examples involving different nanomaterials. Furthermore, the merits of the marriage of stem cells and nanomaterial scaffolds are also demonstrated in vivo, providing early successes to support subsequent clinical investigations. This progress simultaneously drives mechanistic research into the mechanotransduction process responsible for the observations in order to optimize the process further. Current understanding is chiefly reported to involve the interaction of stem cells and the anchoring nanomaterial scaffolds by activating various signaling pathways. Substrate surface characteristics and scaffold bulk properties are also reported to influence not only short term stem cell adhesion, spreading and proliferation, but also longer term lineage differentiation, functionalization and viability. It is expected that the combination of stem cells and nanomaterials will develop into an important tool in tissue engineering for the innovative treatment of many diseases.
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Affiliation(s)
- Chunyan Zhao
- NanoCore, Engineering Block A, EA, Faculty of Engineering, National University of Singapore, 117576, Singapore
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Wang X, He J, Wang Y, Cui FZ. Hyaluronic acid-based scaffold for central neural tissue engineering. Interface Focus 2012; 2:278-91. [PMID: 23741606 PMCID: PMC3363026 DOI: 10.1098/rsfs.2012.0016] [Citation(s) in RCA: 83] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2012] [Accepted: 02/20/2012] [Indexed: 12/17/2022] Open
Abstract
Central nervous system (CNS) regeneration with central neuronal connections and restoration of synaptic connections has been a long-standing worldwide problem and, to date, no effective clinical therapies are widely accepted for CNS injuries. The limited regenerative capacity of the CNS results from the growth-inhibitory environment that impedes the regrowth of axons. Central neural tissue engineering has attracted extensive attention from multi-disciplinary scientists in recent years, and many studies have been carried out to develop cell- and regeneration-activating biomaterial scaffolds that create an artificial micro-environment suitable for axonal regeneration. Among all the biomaterials, hyaluronic acid (HA) is a promising candidate for central neural tissue engineering because of its unique physico-chemical and biological properties. This review attempts to outline current biomaterials-based strategies for CNS regeneration from a tissue engineering point of view and discusses the main progresses in research of HA-based scaffolds for central neural tissue engineering in detail.
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Affiliation(s)
- Xiumei Wang
- Institute for Regenerative Medicine and Biomimetic Materials, State Key Laboratory of New Ceramics and Fine Processing, Department of Materials Science and Engineering, Tsinghua University, Beijing 100084, People's Republic of China
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