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Tonndorf R, Aibibu D, Cherif C. Isotropic and Anisotropic Scaffolds for Tissue Engineering: Collagen, Conventional, and Textile Fabrication Technologies and Properties. Int J Mol Sci 2021; 22:9561. [PMID: 34502469 PMCID: PMC8431235 DOI: 10.3390/ijms22179561] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2021] [Revised: 08/30/2021] [Accepted: 08/31/2021] [Indexed: 12/15/2022] Open
Abstract
In this review article, tissue engineering and regenerative medicine are briefly explained and the importance of scaffolds is highlighted. Furthermore, the requirements of scaffolds and how they can be fulfilled by using specific biomaterials and fabrication methods are presented. Detailed insight is given into the two biopolymers chitosan and collagen. The fabrication methods are divided into two categories: isotropic and anisotropic scaffold fabrication methods. Processable biomaterials and achievable pore sizes are assigned to each method. In addition, fiber spinning methods and textile fabrication methods used to produce anisotropic scaffolds are described in detail and the advantages of anisotropic scaffolds for tissue engineering and regenerative medicine are highlighted.
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Affiliation(s)
- Robert Tonndorf
- Institute of Textile Machinery and High Performance Material Technology, Technische Universität Dresden, 01069 Dresden, Germany; (D.A.); (C.C.)
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Liu R, Zhang S, Zhao C, Yang D, Cui T, Liu Y, Min Y. Regulated Surface Morphology of Polyaniline/Polylactic Acid Composite Nanofibers via Various Inorganic Acids Doping for Enhancing Biocompatibility in Tissue Engineering. NANOSCALE RESEARCH LETTERS 2021; 16:4. [PMID: 33404823 PMCID: PMC7788154 DOI: 10.1186/s11671-020-03457-z] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/25/2020] [Accepted: 11/29/2020] [Indexed: 06/12/2023]
Abstract
Conductive and degradable nanofibrous scaffolds have great potential in promoting cell growth, proliferation, and differentiation under an external electric field. Although the issue of inferior electrical conductivity in body fluids still exists, polyaniline (PANI)-based degradable nanofibers can promote cell adhesion, growth, and proliferation. To investigate whether the effect is caused by the PANI morphology, we selected three inorganic acids as dopants in the process of PANI in situ oxidative polymerization: hydrochloric acid, sulfuric acid, and perchloric acid. The obtained polyaniline/polylactic acid (PANI/PLA) composite nanofibers were characterized via SEM, FTIR, and XPS analysis, and we confirmed that the PLA nanofibers were successfully coated by PANI without any change to the porous structure of the PLA nanofibers. The in vitro mechanical properties and degradability indicated that the oxidation of acid dopants should be considered and that it was likely to have a higher oxidation degradation effect on PLA nanofibers. The contact angle test demonstrated that PANI/PLA composite nanofibers with different surface morphologies have good wettability, implying that they meet the requirements of bone tissue engineering scaffolds. The surface roughness and cell viability demonstrated that different PANI morphologies on the surface can promote cell proliferation. The higher the surface roughness of the PANI, the better the biocompatibility. Consequently, the regulated surface morphology of PANI/PLA composite nanofibers via different acids doping has positive effect on biocompatibility in tissue engineering.
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Affiliation(s)
- Rongtao Liu
- School of Materials and Energy, Guangdong University of Technology (GDUT), Guangzhou, 510006, China
- Dongguan South China Design Innovation Institute, Dongguan, 523808, Guangdong, China
| | - Shiyang Zhang
- School of Materials and Energy, Guangdong University of Technology (GDUT), Guangzhou, 510006, China
- Dongguan South China Design Innovation Institute, Dongguan, 523808, Guangdong, China
| | - Chen Zhao
- School of Materials and Energy, Guangdong University of Technology (GDUT), Guangzhou, 510006, China
| | - Dong Yang
- School of Materials and Energy, Guangdong University of Technology (GDUT), Guangzhou, 510006, China
| | - Tingting Cui
- School of Materials and Energy, Guangdong University of Technology (GDUT), Guangzhou, 510006, China
| | - Yidong Liu
- School of Materials and Energy, Guangdong University of Technology (GDUT), Guangzhou, 510006, China.
| | - Yonggang Min
- School of Materials and Energy, Guangdong University of Technology (GDUT), Guangzhou, 510006, China.
- Dongguan South China Design Innovation Institute, Dongguan, 523808, Guangdong, China.
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Jiao Y, Li C, Liu L, Wang F, Liu X, Mao J, Wang L. Construction and application of textile-based tissue engineering scaffolds: a review. Biomater Sci 2020; 8:3574-3600. [PMID: 32555780 DOI: 10.1039/d0bm00157k] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Tissue engineering (TE) provides a practicable method for tissue and organ repair or substitution. As the most important component of TE, a scaffold plays a critical role in providing a growing environment for cell proliferation and functional differentiation as well as good mechanical support. And the restorative effects are greatly dependent upon the nature of the scaffold including the composition, morphology, structure, and mechanical performance. Medical textiles have been widely employed in the clinic for a long time and are being extensively investigated as TE scaffolds. However, unfortunately, the advantages of textile technology cannot be fully exploited in tissue regeneration due to the ignoring of the diversity of fabric structures. Therefore, this review focuses on textile-based scaffolds, emphasizing the significance of the fabric design and the resultant characteristics of cell behavior and extracellular matrix reconstruction. The structure and mechanical behavior of the fabrics constructed by various textile techniques for different tissue repairs are summarized. Furthermore, the prospect of structural design in the TE scaffold preparation was anticipated, including profiled fibers and some unique and complex textile structures. Hopefully, the readers of this review would appreciate the importance of structural design of the scaffold and the usefulness of textile-based TE scaffolds in tissue regeneration.
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Affiliation(s)
- Yongjie Jiao
- Key Laboratory of Textile Science and Technology of Ministry of Education and College of Textiles, Donghua University, Shanghai 201620, China.
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Xu Z, Wang N, Liu P, Sun Y, Wang Y, Fei F, Zhang S, Zheng J, Han B. Poly(Dopamine) Coating on 3D-Printed Poly-Lactic-Co-Glycolic Acid/β-Tricalcium Phosphate Scaffolds for Bone Tissue Engineering. Molecules 2019; 24:E4397. [PMID: 31810169 PMCID: PMC6930468 DOI: 10.3390/molecules24234397] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2019] [Revised: 11/28/2019] [Accepted: 11/28/2019] [Indexed: 12/22/2022] Open
Abstract
Bone defects caused by osteoporosis, bone malignant tumors, and trauma are very common, but there are many limiting factors in the clinical treatment of them. Bone tissue engineering is the most promising treatment and is considered to be the main strategy for bone defect repair. We prepared polydopamine-coated poly-(lactic-co-glycolic acid)/β-tricalcium phosphate composite scaffolds via 3D printing, and a series of characterization and biocompatibility tests were carried out. The results show that the mechanical properties and pore-related parameters of the composite scaffolds are not affected by the coatings, and the hydrophilicities of the surface are obviously improved. Scanning electron microscopy and micro-computed tomography display the nanoscale microporous structure of the bio-materials. Biological tests demonstrate that this modified surface can promote cell adhesion and proliferation and improve osteogenesis through the increase of polydopamine (PDA) concentrations. Mouse cranial defect experiments are conducted to further verify the conclusion that scaffolds with a higher content of PDA coatings have a better effect on the formation of new bones. In the study, the objective of repairing critical-sized defects is achieved by simply adding PDA as coatings to obtain positive results, which can suggest that this modification method with PDA has great potential.
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Affiliation(s)
| | | | | | | | | | | | | | | | - Bing Han
- Department of Oral and Maxillofacial Surgery, School of Stomatology, Jilin University, Changchun 130021, China; (Z.X.); (N.W.); (P.L.); (Y.S.); (Y.W.); (F.F.); (S.Z.); (J.Z.)
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Hatamzadeh M, Najafi-Moghadam P, Beygi-Khosrowshahi Y, Massoumi B, Jaymand M. Electrically conductive nanofibrous scaffolds based on poly(ethylene glycol)s-modified polyaniline and poly(ε-caprolactone) for tissue engineering applications. RSC Adv 2016. [DOI: 10.1039/c6ra22280c] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The objective of this study was to design and development of electrically conductive nanofibrous scaffolds composed of PEGs-b-(PANI)4 and PCL for tissue engineering applications.
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Affiliation(s)
- Maryam Hatamzadeh
- Department of Organic Chemistry
- Faculty of Chemistry
- University of Urmia
- Urmia
- Iran
| | | | - Younes Beygi-Khosrowshahi
- Stem Cell and Tissue Engineering Research Laboratory
- Sahand University of Technology
- Tabriz
- Iran
- Chemical Engineering Department
| | | | - Mehdi Jaymand
- Research Center for Pharmaceutical Nanotechnology
- Tabriz University of Medical Sciences
- Tabriz
- Iran
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