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Higuera GA, Ramos T, Gloria A, Ambrosio L, Di Luca A, Pechkov N, de Wijn JR, van Blitterswijk CA, Moroni L. PEOT/PBT Polymeric Pastes to Fabricate Additive Manufactured Scaffolds for Tissue Engineering. Front Bioeng Biotechnol 2021; 9:704185. [PMID: 34595158 PMCID: PMC8476768 DOI: 10.3389/fbioe.2021.704185] [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: 05/01/2021] [Accepted: 08/30/2021] [Indexed: 11/13/2022] Open
Abstract
The advantages of additive manufactured scaffolds, as custom-shaped structures with a completely interconnected and accessible pore network from the micro- to the macroscale, are nowadays well established in tissue engineering. Pore volume and architecture can be designed in a controlled fashion, resulting in a modulation of scaffold’s mechanical properties and in an optimal nutrient perfusion determinant for cell survival. However, the success of an engineered tissue architecture is often linked to its surface properties as well. The aim of this study was to create a family of polymeric pastes comprised of poly(ethylene oxide therephthalate)/poly(butylene terephthalate) (PEOT/PBT) microspheres and of a second biocompatible polymeric phase acting as a binder. By combining microspheres with additive manufacturing technologies, we produced 3D scaffolds possessing a tailorable surface roughness, which resulted in improved cell adhesion and increased metabolic activity. Furthermore, these scaffolds may offer the potential to act as drug delivery systems to steer tissue regeneration.
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Affiliation(s)
- Gustavo A Higuera
- Institute for BioMedical Technology and Technical Medicine (MIRA), Tissue Regeneration Department, University of Twente, Enschede, Netherlands
| | - Tiago Ramos
- Institute of Ophthalmology, University College of London, London, United Kingdom
| | - Antonio Gloria
- Institute of Polymers, Composites and Biomaterials, National Research Council of Italy, Naples, Italy
| | - Luigi Ambrosio
- Institute of Polymers, Composites and Biomaterials, National Research Council of Italy, Naples, Italy
| | - Andrea Di Luca
- Institute for BioMedical Technology and Technical Medicine (MIRA), Tissue Regeneration Department, University of Twente, Enschede, Netherlands
| | - Nicholas Pechkov
- Institute for BioMedical Technology and Technical Medicine (MIRA), Tissue Regeneration Department, University of Twente, Enschede, Netherlands
| | - Joost R de Wijn
- Institute for BioMedical Technology and Technical Medicine (MIRA), Tissue Regeneration Department, University of Twente, Enschede, Netherlands
| | - Clemens A van Blitterswijk
- MERLN Institute for Technology-inspired Regenerative Medicine, Complex Tissue Regeneration Department, Maastricht University, Maastricht, Netherlands
| | - Lorenzo Moroni
- MERLN Institute for Technology-inspired Regenerative Medicine, Complex Tissue Regeneration Department, Maastricht University, Maastricht, Netherlands
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Kang WB, Chen YJ, Lu DY, Yan JZ. Folic acid contributes to peripheral nerve injury repair by promoting Schwann cell proliferation, migration, and secretion of nerve growth factor. Neural Regen Res 2019; 14:132-139. [PMID: 30531087 PMCID: PMC6263007 DOI: 10.4103/1673-5374.243718] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
After peripheral nerve injury, intraperitoneal injection of folic acid improves axon quantity, increases axon density and improves electromyography results. However, the mechanisms for this remain unclear. This study explored whether folic acid promotes peripheral nerve injury repair by affecting Schwann cell function. Primary Schwann cells were obtained from rats by in vitro separation and culture. Cell proliferation, assayed using the Cell Counting Kit-8 assay, was higher in cells cultured for 72 hours with 100 mg/L folic acid compared with the control group. Cell proliferation was also higher in the 50, 100, 150, and 200 mg/L folic acid groups compared with the control group after culture for 96 hours. Proliferation was markedly higher in the 100 mg/L folic acid group compared with the 50 mg/L folic acid group and the 40 ng/L nerve growth factor group. In Transwell assays, the number of migrated Schwann cells dramatically increased after culture with 100 and 150 mg/L folic acid compared with the control group. In nerve growth factor enzyme-linked immunosorbent assays, treatment of Schwann cell cultures with 50, 100, and 150 mg/L folic acid increased levels of nerve growth factor in the culture medium compared with the control group at 3 days. The nerve growth factor concentration of Schwann cell cultures treated with 100 mg/L folic acid group was remarkably higher than that in the 50 and 150 mg/L folic acid groups at 3 days. Nerve growth factor concentration in the 10, 50, and 100 mg/L folic acid groups was higher than that in the control group at 7 days. The nerve growth factor concentration in the 50 mg/L folic acid group was remarkably higher than that in the 10 and 100 mg/L folic acid groups at 7 days. In vivo, 80 μg/kg folic acid was intraperitoneally administrated for 7 consecutive days after sciatic nerve injury. Immunohistochemical staining showed that the number of Schwann cells in the folic acid group was greater than that in the control group. We suggest that folic acid may play a role in improving the repair of peripheral nerve injury by promoting the proliferation and migration of Schwann cells and the secretion of nerve growth factors.
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Affiliation(s)
- Wei-Bo Kang
- Department of Orthopedic Surgery, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
| | - Yong-Jie Chen
- Department of Orthopedic Surgery, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
| | - Du-Yi Lu
- Department of Orthopedic Surgery, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
| | - Jia-Zhi Yan
- Department of Orthopedic Surgery, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
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Bu Y, Xu HX, Li X, Xu WJ, Yin YX, Dai HL, Wang XB, Huang ZJ, Xu PH. A conductive sodium alginate and carboxymethyl chitosan hydrogel doped with polypyrrole for peripheral nerve regeneration. RSC Adv 2018; 8:10806-10817. [PMID: 35541536 PMCID: PMC9078905 DOI: 10.1039/c8ra01059e] [Citation(s) in RCA: 70] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2018] [Accepted: 02/22/2018] [Indexed: 12/15/2022] Open
Abstract
Polymer materials with electrically conductive properties have good applications in their respective fields because of their special properties. However, they usually exhibited poor mechanical properties and biocompatibility. In this work, we present a simple approach to prepare conductive sodium alginate (SA) and carboxymethyl chitosan (CMCS) polymer hydrogels (SA/CMCS/PPy) that can provide sufficient help for peripheral nerve regeneration. SA/CMCS hydrogel was cross-linked by calcium ions provided by the sustained release system consisting of d-glucono-δ-lactone (GDL) and superfine calcium carbonate (CaCO3), and the conductivity of the hydrogel was provided by doped with polypyrrole (PPy). Gelation time, swelling ratio, porosity and Young's modulus of the conductive SA/CMCS/PPy hydrogel were adjusted by polypyrrole content, and the conductivity of it was within 2.41 × 10−5 to 8.03 × 10−3 S cm−1. The advantages of conductive hydrogels in cell growth were verified by controlling electrical stimulation of cell experiments, and the hydrogels were also used as a filling material for the nerve conduit in animal experiments. The SA/CMCS/PPy conductive hydrogel showed good biocompatibility and repair features as a bioactive biomaterial, we expect this conductive hydrogel will have a good potential in the neural tissue engineering. Polymer materials with electrically conductive properties have good applications in their respective fields because of their special properties.![]()
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Affiliation(s)
- Ying Bu
- Department of Pharmaceutical Engineering
- School of Chemistry, Chemical Engineering and Life Sciences
- Wuhan University of Technology
- Wuhan 430070
- PR China
| | - Hai-Xing Xu
- Department of Pharmaceutical Engineering
- School of Chemistry, Chemical Engineering and Life Sciences
- Wuhan University of Technology
- Wuhan 430070
- PR China
| | - Xin Li
- Department of Pharmaceutical Engineering
- School of Chemistry, Chemical Engineering and Life Sciences
- Wuhan University of Technology
- Wuhan 430070
- PR China
| | - Wen-Jin Xu
- Department of Pharmaceutical Engineering
- School of Chemistry, Chemical Engineering and Life Sciences
- Wuhan University of Technology
- Wuhan 430070
- PR China
| | - Yi-xia Yin
- Biomedical Materials and Engineering Research Center
- Wuhan University of Technology
- Wuhan 430070
- PR China
| | - Hong-lian Dai
- Biomedical Materials and Engineering Research Center
- Wuhan University of Technology
- Wuhan 430070
- PR China
| | - Xiao-bin Wang
- Wuhan Kanghua Century Pharmaceutical Company
- Wuhan 430070
- PR China
| | - Zhi-Jun Huang
- Department of Pharmaceutical Engineering
- School of Chemistry, Chemical Engineering and Life Sciences
- Wuhan University of Technology
- Wuhan 430070
- PR China
| | - Pei-Hu Xu
- Department of Pharmaceutical Engineering
- School of Chemistry, Chemical Engineering and Life Sciences
- Wuhan University of Technology
- Wuhan 430070
- PR China
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Adhesive peptides conjugated PAMAM dendrimer as a coating polymeric material enhancing cell responses. CHINESE CHEM LETT 2016. [DOI: 10.1016/j.cclet.2016.03.012] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Gopinathan J, Quigley AF, Bhattacharyya A, Padhye R, Kapsa RMI, Nayak R, Shanks RA, Houshyar S. Preparation, characterisation, andin vitroevaluation of electrically conducting poly(ɛ-caprolactone)-based nanocomposite scaffolds using PC12 cells. J Biomed Mater Res A 2015; 104:853-65. [DOI: 10.1002/jbm.a.35620] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2015] [Accepted: 11/13/2015] [Indexed: 12/16/2022]
Affiliation(s)
- Janarthanan Gopinathan
- Advanced Textile and Polymer Research Lab, PSG Institute of Advanced Studies; Coimbatore India
| | - Anita F. Quigley
- Centre for Clinical Neurosciences and Neurological Research, St. Vincent's Hospital; Victoria 3065 Australia
- ARC Centre of Excellence for Electromaterials Science; Intelligent Polymer Research Institute, AIIM Facility, Innovation Campus, University of Wollongong; New South Wales 2500 Australia
- Department of Medicine; University of Melbourne; 3065 Australia
| | - Amitava Bhattacharyya
- Advanced Textile and Polymer Research Lab, PSG Institute of Advanced Studies; Coimbatore India
| | - Rajiv Padhye
- College of Design and Social Context; Centre for Advanced Materials and Performance Textiles, School of Fashion and Textiles, RMIT University; Melbourne 3056 Australia
| | - Robert M. I. Kapsa
- Centre for Clinical Neurosciences and Neurological Research, St. Vincent's Hospital; Victoria 3065 Australia
- ARC Centre of Excellence for Electromaterials Science; Intelligent Polymer Research Institute, AIIM Facility, Innovation Campus, University of Wollongong; New South Wales 2500 Australia
- Department of Medicine; University of Melbourne; 3065 Australia
| | - Rajkishore Nayak
- College of Design and Social Context; Centre for Advanced Materials and Performance Textiles, School of Fashion and Textiles, RMIT University; Melbourne 3056 Australia
| | - Robert A. Shanks
- College of Science, Engineering and Health, School of Applied Sciences, RMIT University; Melbourne 3000 Australia
| | - Shadi Houshyar
- College of Design and Social Context; Centre for Advanced Materials and Performance Textiles, School of Fashion and Textiles, RMIT University; Melbourne 3056 Australia
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Uskoković V. When 1+1>2: Nanostructured composites for hard tissue engineering applications. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2015; 57:434-51. [PMID: 26354283 PMCID: PMC4567690 DOI: 10.1016/j.msec.2015.07.050] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/29/2014] [Revised: 04/15/2015] [Accepted: 07/23/2015] [Indexed: 12/20/2022]
Abstract
Multicomponent, synergistic and multifunctional nanostructures have taken over the spotlight in the realm of biomedical nanotechnologies. The most prospective materials for bone regeneration today are almost exclusively composites comprising two or more components that compensate for the shortcomings of each one of them alone. This is quite natural in view of the fact that all hard tissues in the human body, except perhaps the tooth enamel, are composite nanostructures. This review article highlights some of the most prospective breakthroughs made in this research direction, with the hard tissues in main focus being those comprising bone, tooth cementum, dentin and enamel. The major obstacles to creating collagen/apatite composites modeled after the structure of bone are mentioned, including the immunogenicity of xenogeneic collagen and continuously failing attempts to replicate the biomineralization process in vitro. Composites comprising a polymeric component and calcium phosphate are discussed in light of their ability to emulate the soft/hard composite structure of bone. Hard tissue engineering composites created using hard material components other than calcium phosphates, including silica, metals and several types of nanotubes, are also discoursed on, alongside additional components deliverable using these materials, such as cells, growth factors, peptides, antibiotics, antiresorptive and anabolic agents, pharmacokinetic conjugates and various cell-specific targeting moieties. It is concluded that a variety of hard tissue structures in the body necessitates a similar variety of biomaterials for their regeneration. The ongoing development of nanocomposites for bone restoration will result in smart, theranostic materials, capable of acting therapeutically in direct feedback with the outcome of in situ disease monitoring at the cellular and subcellular scales. Progress in this research direction is expected to take us to the next generation of biomaterials, designed with the purpose of fulfilling Daedalus' dream - not restoring the tissues, but rather augmenting them.
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Affiliation(s)
- Vuk Uskoković
- Advanced Materials and Nanobiotechnology Laboratory, Department of Bioengineering, University of Illinois, Chicago, IL, USA.
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Fox CB, Kim J, Schlesinger EB, Chirra HD, Desai TA. Fabrication of micropatterned polymeric nanowire arrays for high-resolution reagent localization and topographical cellular control. NANO LETTERS 2015; 15:1540-6. [PMID: 25639724 PMCID: PMC4664059 DOI: 10.1021/nl503872p] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Herein, we present a novel approach for the fabrication of micropatterned polymeric nanowire arrays that addresses the current need for scalable and customizable polymer nanofabrication. We describe two variations of this approach for the patterning of nanowire arrays on either flat polymeric films or discrete polymeric microstructures and go on to investigate biological applications for the resulting polymeric features. We demonstrate that the micropatterned arrays of densely packed nanowires facilitate rapid, low-waste drug and reagent localization with micron-scale resolution as a result of their high wettability. We also show that micropatterned nanowire arrays provide hierarchical cellular control by simultaneously directing cell shape on the micron scale and influencing focal adhesion formation on the nanoscale. This nanofabrication approach has potential applications in scaffold-based cellular control, biological assay miniaturization, and biomedical microdevice technology.
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Affiliation(s)
- Cade B. Fox
- Department of Bioengineering and Therapeutic Sciences, University of California, San Francisco, California 94158, United States
| | - Jean Kim
- UC Berkeley and UCSF Graduate Program in Bioengineering, UCSF Mission Bay Campus, San Francisco, California 94158, United States
| | - Erica B. Schlesinger
- UC Berkeley and UCSF Graduate Program in Bioengineering, UCSF Mission Bay Campus, San Francisco, California 94158, United States
| | - Hariharasudhan D. Chirra
- Department of Bioengineering and Therapeutic Sciences, University of California, San Francisco, California 94158, United States
| | - Tejal A Desai
- Department of Bioengineering and Therapeutic Sciences, University of California, San Francisco, California 94158, United States
- UC Berkeley and UCSF Graduate Program in Bioengineering, UCSF Mission Bay Campus, San Francisco, California 94158, United States
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