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Khan MQ, Alvi MA, Nawaz HH, Umar M. Cancer Treatment Using Nanofibers: A Review. NANOMATERIALS (BASEL, SWITZERLAND) 2024; 14:1305. [PMID: 39120410 PMCID: PMC11314412 DOI: 10.3390/nano14151305] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/19/2024] [Revised: 07/22/2024] [Accepted: 08/01/2024] [Indexed: 08/10/2024]
Abstract
Currently, the number of patients with cancer is expanding consistently because of a low quality of life. For this reason, the therapies used to treat cancer have received a lot of consideration from specialists. Numerous anticancer medications have been utilized to treat patients with cancer. However, the immediate utilization of anticancer medicines leads to unpleasant side effects for patients and there are many restrictions to applying these treatments. A number of polymers like cellulose, chitosan, Polyvinyl Alcohol (PVA), Polyacrylonitrile (PAN), peptides and Poly (hydroxy alkanoate) have good properties for the treatment of cancer, but the nanofibers-based target and controlled drug delivery system produced by the co-axial electrospinning technique have extraordinary properties like favorable mechanical characteristics, an excellent release profile, a high surface area, and a high sponginess and are harmless, bio-renewable, biofriendly, highly degradable, and can be produced very conveniently on an industrial scale. Thus, nanofibers produced through coaxial electrospinning can be designed to target specific cancer cells or tissues. By modifying the composition and properties of the nanofibers, researchers can control the release kinetics of the therapeutic agent and enhance its accumulation at the tumor site while minimizing systemic toxicity. The core-shell structure of coaxial electrospun nanofibers allows for a controlled and sustained release of therapeutic agents over time. This controlled release profile can improve the efficacy of cancer treatment by maintaining therapeutic drug concentrations within the tumor microenvironment for an extended period.
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Affiliation(s)
- Muhammad Qamar Khan
- Department of Textile Engineering, School of Engineering and Technology, National Textile University, Faisalabad 37610, Pakistan
| | - Muhammad Abbas Alvi
- Department of Textile Engineering, School of Engineering and Technology, National Textile University, Faisalabad 37610, Pakistan
| | - Hafiza Hifza Nawaz
- Department of Materials, The University of Manchester, Manchester M13 9PL, UK;
| | - Muhammad Umar
- Department of Materials, The University of Manchester, Manchester M13 9PL, UK;
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2
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Huang T, Zeng Y, Li C, Zhou Z, Xu J, Wang L, Yu DG, Wang K. Application and Development of Electrospun Nanofiber Scaffolds for Bone Tissue Engineering. ACS Biomater Sci Eng 2024; 10:4114-4144. [PMID: 38830819 DOI: 10.1021/acsbiomaterials.4c00028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/05/2024]
Abstract
Nanofiber scaffolds have gained significant attention in the field of bone tissue engineering. Electrospinning, a straightforward and efficient technique for producing nanofibers, has been extensively researched. When used in bone tissue engineering scaffolds, electrospun nanofibers with suitable surface properties promote new bone tissue growth and enhance cell adhesion. Recent advancements in electrospinning technology have provided innovative approaches for scaffold fabrication in bone tissue engineering. This review comprehensively examines the utilization of electrospun nanofibers in bone tissue engineering scaffolds and evaluates the relevant literature. The review begins by presenting the fundamental principles and methodologies of electrospinning. It then discusses various materials used in the production of electrospun nanofiber scaffolds for bone tissue engineering, including natural and synthetic polymers, as well as certain inorganic materials. The challenges associated with these materials are also described. The review focuses on novel electrospinning techniques for scaffold construction in bone tissue engineering, such as multilayer nanofibers, multifluid electrospinning, and the integration of electrospinning with other methods. Recent advancements in electrospinning technology have enabled the fabrication of precisely aligned nanofiber scaffolds with nanoscale architectures. These innovative methods also facilitate the fabrication of biomimetic structures, wherein bioactive substances can be incorporated and released in a controlled manner for drug delivery purposes. Moreover, they address issues encountered with traditional electrospun nanofibers, such as mechanical characteristics and biocompatibility. Consequently, the development and implementation of novel electrospinning technologies have revolutionized scaffold fabrication for bone tissue engineering.
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Affiliation(s)
- Tianyue Huang
- School of Materials and Chemistry, University of Shanghai for Science and Technology 516 Jungong Road, Shanghai 200093, China
| | - YuE Zeng
- Department of Neurology, RuiJin Hospital Lu Wan Branch, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
| | - Chaofei Li
- Department of General Surgery, RuiJin Hospital Lu Wan Branch, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
| | - Zhengqing Zhou
- School of Materials and Chemistry, University of Shanghai for Science and Technology 516 Jungong Road, Shanghai 200093, China
| | - Jie Xu
- School of Materials and Chemistry, University of Shanghai for Science and Technology 516 Jungong Road, Shanghai 200093, China
| | - Lean Wang
- School of Materials and Chemistry, University of Shanghai for Science and Technology 516 Jungong Road, Shanghai 200093, China
| | - Deng-Guang Yu
- School of Materials and Chemistry, University of Shanghai for Science and Technology 516 Jungong Road, Shanghai 200093, China
| | - Ke Wang
- School of Materials and Chemistry, University of Shanghai for Science and Technology 516 Jungong Road, Shanghai 200093, China
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Christ H, Ang PY, Li F, Johannes H, Kowalsky W, Menzel H. Production of highly aligned microfiber bundles from polymethyl methacrylate via stable jet electrospinning for organic solid‐state lasers. JOURNAL OF POLYMER SCIENCE 2021. [DOI: 10.1002/pol.20210747] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
| | - Pen Yiao Ang
- TU Braunschweig Institut für Hochfrequenztechnik Braunschweig Germany
| | - Fuzhao Li
- TU Braunschweig Institut für Technische Chemie Braunschweig Germany
| | - Hans‐Hermann Johannes
- TU Braunschweig Institut für Hochfrequenztechnik Braunschweig Germany
- Cluster of Excellence PhoenixD (Photonics, Optics, and Engineering –Innovation Across Disciplines) Hannover Germany
| | - Wolfgang Kowalsky
- TU Braunschweig Institut für Hochfrequenztechnik Braunschweig Germany
- Cluster of Excellence PhoenixD (Photonics, Optics, and Engineering –Innovation Across Disciplines) Hannover Germany
| | - Henning Menzel
- TU Braunschweig Institut für Technische Chemie Braunschweig Germany
- Cluster of Excellence PhoenixD (Photonics, Optics, and Engineering –Innovation Across Disciplines) Hannover Germany
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4
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Li W, Zhang L, Chai W, Yin N, Semple K, Li L, Zhang W, Dai C. Enhancement of Flame Retardancy and Mechanical Properties of Polylactic Acid with a Biodegradable Fire-Retardant Filler System Based on Bamboo Charcoal. Polymers (Basel) 2021; 13:2167. [PMID: 34209000 PMCID: PMC8271951 DOI: 10.3390/polym13132167] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2021] [Revised: 06/27/2021] [Accepted: 06/27/2021] [Indexed: 11/17/2022] Open
Abstract
A cooperative flame-retardant system based on natural intumescent-grafted bamboo charcoal (BC) and chitosan (CS) was developed for polylactic acid (PLA) with improved flame retardancy and minimal decline in strength properties. Chitosan (CS) as an adhesion promoter improved the interfacial compatibility between graft-modified bamboo charcoal (BC-m) and PLA leading to enhanced tensile properties by 11.11% and 8.42%, respectively for tensile strength and modulus. At 3 wt.% CS and 30 wt.% BC-m, the crystallinity of the composite increased to 38.92%, or 43 times that of pure PLA (0.9%). CS promotes the reorganization of the internal crystal structure. Thermogravimetric analysis showed significantly improved material retention of PLA composites in nitrogen and air atmosphere. Residue rate for 5 wt.% CS and 30 wt.% BC-m was 29.42% which is 55.1% higher than the theoretical value of 18.97%. Flammability tests (limiting oxygen index-LOI and UL-94) indicated significantly improved flame retardancy and evidence of cooperation between CS and BC-m, with calculated cooperative effectiveness index(Ce) >1. From CONE tests, the peak heat release rate (pHRR) and total heat release (THR) were reduced by 26.9% and 30.5%, respectively, for 3% CS + 20% BC-m in PLA compared with adding 20% BC-m alone. Analysis of carbon residue morphology, chemical elements and structure suggest CS and BC-m form a more stable char containing pyrophosphate. This char provides heat insulation to inhibit complete polymer pyrolysis, resulting in improved flame retardancy of PLA composites. Optimal mix may be recommended at 20% BC-m + 3% CS to balance compatibility, composite strength properties and flame retardance.
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Affiliation(s)
- Wenzhu Li
- Zhejiang Provincial Collaborative Innovation Center for Bamboo Resources and High-Efficiency Utilization, College of Chemistry and Materials Engineering, Zhejiang A&F University, Hangzhou 311300, China; (W.L.); (L.Z.); (W.C.); (N.Y.); (L.L.)
| | - Liang Zhang
- Zhejiang Provincial Collaborative Innovation Center for Bamboo Resources and High-Efficiency Utilization, College of Chemistry and Materials Engineering, Zhejiang A&F University, Hangzhou 311300, China; (W.L.); (L.Z.); (W.C.); (N.Y.); (L.L.)
| | - Weisheng Chai
- Zhejiang Provincial Collaborative Innovation Center for Bamboo Resources and High-Efficiency Utilization, College of Chemistry and Materials Engineering, Zhejiang A&F University, Hangzhou 311300, China; (W.L.); (L.Z.); (W.C.); (N.Y.); (L.L.)
| | - Ningning Yin
- Zhejiang Provincial Collaborative Innovation Center for Bamboo Resources and High-Efficiency Utilization, College of Chemistry and Materials Engineering, Zhejiang A&F University, Hangzhou 311300, China; (W.L.); (L.Z.); (W.C.); (N.Y.); (L.L.)
| | - Kate Semple
- Department of Wood Science, Faculty of Forestry, University of British Columbia, 2900-2424 Main Mall, Vancouver, BC V6T 1Z4, Canada;
| | - Lu Li
- Zhejiang Provincial Collaborative Innovation Center for Bamboo Resources and High-Efficiency Utilization, College of Chemistry and Materials Engineering, Zhejiang A&F University, Hangzhou 311300, China; (W.L.); (L.Z.); (W.C.); (N.Y.); (L.L.)
| | - Wenbiao Zhang
- Zhejiang Provincial Collaborative Innovation Center for Bamboo Resources and High-Efficiency Utilization, College of Chemistry and Materials Engineering, Zhejiang A&F University, Hangzhou 311300, China; (W.L.); (L.Z.); (W.C.); (N.Y.); (L.L.)
| | - Chunping Dai
- Department of Wood Science, Faculty of Forestry, University of British Columbia, 2900-2424 Main Mall, Vancouver, BC V6T 1Z4, Canada;
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Kim K, Kloxin CJ, Saven JG, Pochan DJ. Nanofibers Produced by Electrospinning of Ultrarigid Polymer Rods Made from Designed Peptide Bundlemers. ACS APPLIED MATERIALS & INTERFACES 2021; 13:26339-26351. [PMID: 34029045 DOI: 10.1021/acsami.1c04027] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Mimicking the hierarchical assembly of natural fiber materials is an important design challenge in the manufacturing of nanostructured materials with biomolecules such as peptides. Here, we produce nanofibers with control of structure over multiple length scales, ranging from peptide molecule assembly into supramolecular building blocks called "bundlemers," to rigid-rod formation through a covalent connection of bundlemer building blocks, and, ultimately, to uniaxially oriented fibers made with the rigid-rod polymers. The peptides are designed to physically assemble into coiled-coil bundles, or bundlemers, and to covalently interact in an end-to-end fashion to produce the rigid-rod polymer. The resultant rodlike polymer exhibits a rigid, cylindrical nanostructure confirmed by transmission electron microscopy (TEM) and, correspondingly, exhibits shear-thinning behavior at low shear rates observed in many nanoscopic rod systems. The rigid-rod chains are further organized into final fiber materials via electrospinning processing, all the while preserving their unique rodlike structural characteristics. Morphological and structural investigations of the nanofibers through scanning electron microscopy, transmission electron microscopy, and X-ray scattering, as well as molecular characterization via Fourier transform infrared (FTIR) and Raman spectroscopy, show that continuous nanofibers are composed of oriented rigid-rod chains constituted by α-helical peptides within bundle building blocks. Mechanical properties of electrospun fibers are also presented. The ability to produce nanofibers from the oriented rigid-rod polymer reveals bundlemer chains as a viable tool for the development of new fiber materials with targeted structure and properties.
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Affiliation(s)
- Kyunghee Kim
- Department of Materials Science and Engineering, University of Delaware, Newark, Delaware 19716, United States
| | - Christopher J Kloxin
- Department of Materials Science and Engineering, University of Delaware, Newark, Delaware 19716, United States
- Department of Chemical and Biomolecular Engineering, University of Delaware, Newark, Delaware 19716, United States
| | - Jeffery G Saven
- Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Darrin J Pochan
- Department of Materials Science and Engineering, University of Delaware, Newark, Delaware 19716, United States
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Boschetto F, Doan HN, Phong Vo P, Zanocco M, Yamamoto K, Zhu W, Adachi T, Kinashi K, Marin E, Pezzotti G. Bacteriostatic Behavior of PLA-BaTiO 3 Composite Fibers Synthesized by Centrifugal Spinning and Subjected to Aging Test. Molecules 2021; 26:2918. [PMID: 34069021 PMCID: PMC8157108 DOI: 10.3390/molecules26102918] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2021] [Revised: 05/05/2021] [Accepted: 05/06/2021] [Indexed: 11/17/2022] Open
Abstract
The present work investigated the effect of Polylactic acid (PLA) fibers produced by centrifugal spinning with incorporated BaTiO3 particles to improve their bacteriostatic behavior. The PLA matrix and three composites, presenting three different amounts of fillers, were subjected to UV/O3 treatment monitoring the possible modifications that occurred over time. The morphological and physical properties of the surfaces were characterized by different microscopic techniques, contact angle, and surface potential measurements. Subsequently, the samples were tested in vitro with human dermal fibroblasts (HDF) to verify the cytotoxicity of the substrates. No significant differences between the PLA matrix and composites emerged; the high hydrophobicity of the fibers, derived by the polymer structure, represented an obstacle limiting the fibroblast attachment. Samples underwent bacterial exposure (Staphylococcus epidermidis) for 12 and 24 h. Increasing the concentration of BT, the number of living bacteria and their distribution decreased in comparison with the PLA matrix suggesting an effect of the inorganic filler, which generates a neutralization effect leading to reactive oxygen species (ROS) generation and subsequently to bacterial damages. These results suggest that the barium titanate (BT) fillers clearly improve the antibacterial properties of PLA fibers after aging tests made before bacterial exposure, representing a potential candidate in the creation of composites for medical applications.
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Affiliation(s)
- Francesco Boschetto
- Ceramic Physics Laboratory, Kyoto Institute of Technology, Sakyo-ku, Matsugasaki, Kyoto 606-8585, Japan; (M.Z.); (W.Z.); (E.M.); (G.P.)
- Department of Dental Medicine, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kamigyo-ku, Kyoto 602-8566, Japan; (K.Y.); (T.A.)
| | - Hoan Ngoc Doan
- Functional Polymer Design Laboratory, Kyoto Institute of Technology, Sakyo-ku, Matsugasaki, Kyoto 606-8585, Japan; (H.N.D.); (P.P.V.); (K.K.)
| | - Phu Phong Vo
- Functional Polymer Design Laboratory, Kyoto Institute of Technology, Sakyo-ku, Matsugasaki, Kyoto 606-8585, Japan; (H.N.D.); (P.P.V.); (K.K.)
| | - Matteo Zanocco
- Ceramic Physics Laboratory, Kyoto Institute of Technology, Sakyo-ku, Matsugasaki, Kyoto 606-8585, Japan; (M.Z.); (W.Z.); (E.M.); (G.P.)
- Department of Immunology, Kyoto Prefectural University of Medicine, Kamigyo-ku, Kyoto 602-8566, Japan
| | - Kenta Yamamoto
- Department of Dental Medicine, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kamigyo-ku, Kyoto 602-8566, Japan; (K.Y.); (T.A.)
- Department of Immunology, Kyoto Prefectural University of Medicine, Kamigyo-ku, Kyoto 602-8566, Japan
| | - Wenliang Zhu
- Ceramic Physics Laboratory, Kyoto Institute of Technology, Sakyo-ku, Matsugasaki, Kyoto 606-8585, Japan; (M.Z.); (W.Z.); (E.M.); (G.P.)
| | - Tetsuya Adachi
- Department of Dental Medicine, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kamigyo-ku, Kyoto 602-8566, Japan; (K.Y.); (T.A.)
| | - Kenji Kinashi
- Functional Polymer Design Laboratory, Kyoto Institute of Technology, Sakyo-ku, Matsugasaki, Kyoto 606-8585, Japan; (H.N.D.); (P.P.V.); (K.K.)
| | - Elia Marin
- Ceramic Physics Laboratory, Kyoto Institute of Technology, Sakyo-ku, Matsugasaki, Kyoto 606-8585, Japan; (M.Z.); (W.Z.); (E.M.); (G.P.)
- Department of Dental Medicine, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kamigyo-ku, Kyoto 602-8566, Japan; (K.Y.); (T.A.)
| | - Giuseppe Pezzotti
- Ceramic Physics Laboratory, Kyoto Institute of Technology, Sakyo-ku, Matsugasaki, Kyoto 606-8585, Japan; (M.Z.); (W.Z.); (E.M.); (G.P.)
- Department of Immunology, Kyoto Prefectural University of Medicine, Kamigyo-ku, Kyoto 602-8566, Japan
- Department of Orthopedic Surgery, Tokyo Medical University, 6-7-1 Nishi-Shinjuku, Shinjuku-ku, Tokyo 160-0023, Japan
- The Center for Advanced Medical Engineering and Informatics, Osaka University, 2-2 Yamadaoka, Suita, Osaka 565-0854, Japan
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7
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A review on the applications of electrospun chitosan nanofibers for the cancer treatment. Int J Biol Macromol 2021; 183:790-810. [PMID: 33965480 DOI: 10.1016/j.ijbiomac.2021.05.009] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2021] [Revised: 04/24/2021] [Accepted: 05/01/2021] [Indexed: 01/20/2023]
Abstract
In recent years, the incidence of cancer is increasing every day due to poor quality of life (industrialization of life). Therefore, the treatment of cancer has received much attention from therapists. So far, many anticancer drugs have been used to treat cancer patents. However, the direct use of the anticancer drugs has the adverse side effects for patents and several limitations to treat process. Natural chitosan nanofibers prepared by electrospinning method have unique properties such as high surface area, high porosity, suitable mechanical properties, nontoxicity, biocompatibility, biodegradability, biorenewable, low immunogenicity, better clinical functionality, analogue to extracellular model, and easy production in large scale. Therefore, this bio-polymer is a very suitable case to deliver of the anti-cancer drugs to treat cancer patents. In this review summarizes the electrospinning synthesis of chitosan and its therapeutic application for the various cancer treatment.
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Conversion of Electrospun Chitosan into Chitin: A Robust Strategy to Tune the Properties of 2D Biomimetic Nanofiber Scaffolds. POLYSACCHARIDES 2021. [DOI: 10.3390/polysaccharides2020019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
New biomimetic micro- and nano-CsU-based fibrous scaffolds electrospun from solution containing high purity-medical grade chitosan (CsU) of fungus origin (CsU1, Mv ~174,000 and CsU2, 205,000, degree of deacetylation (DDA) ~65%) and polyethylene oxide (PEO, Mv ~ 900,000), in the presence of given amounts of Triton X-100 (from 0.01 to 0.5 wt%) as surfactant were fabricated. We demonstrate that by carefully selecting compositions and surfactant levels, porous mats with CsU content up to 90% (at this molecular weight and DDA) were achieved. Remarkable long-term stability in water or phosphate buffer solution storage were obtained by developing post-electrospinning treatment allowing the complete elimination of the PEO from the CsU-fibers as demonstrated by TGA, DSC and ESEM analysis. Subsequent reacetylation procedure was applied to convert 2D biomimetic chitosan mats to chitin (CsE)-based ones while preserving the nanofiber structure. This innovative procedure allows tuning and modifying the thermal, mechanical properties and more importantly the biodegradation abilities (fast enzymatic biodegradation in some cases and slower on the others) of the prepared nanofibrous mats. The established reproducible method offers the unique advantage to modulate the membrane properties leading to stable 2D biomimetic CsU and/or chitin (CsE) scaffolds tailor-made for specific purposes in the field of tissue engineering.
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Ching KY, Andriotis O, Sengers B, Stolz M. Genipin crosslinked chitosan/PEO nanofibrous scaffolds exhibiting an improved microenvironment for the regeneration of articular cartilage. J Biomater Appl 2021; 36:503-516. [PMID: 33730922 PMCID: PMC8419291 DOI: 10.1177/08853282211002015] [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] [Indexed: 01/01/2023]
Abstract
Towards optimizing the growth of extracellular matrix to produce repair cartilage for healing articular cartilage (AC) defects in joints, scaffold-based tissue engineering approaches have recently become a focus of clinical research. Scaffold-based approaches by electrospinning aim to support the differentiation of chondrocytes by providing an ultrastructure similar to the fibrillar meshwork in native cartilage. In a first step, we demonstrate how the blending of chitosan with poly(ethylene oxide) (PEO) allows concentrated chitosan solution to become electrospinnable. The chitosan-based scaffolds share the chemical structure and characteristics of glycosaminoglycans, which are important structural components of the cartilage extracellular matrix. Electrospinning produced nanofibrils of ∼100 nm thickness that are closely mimicking the size of collagen fibrils in human AC. The polymer scaffolds were stabilized in physiological conditions and their stiffness was tuned by introducing the biocompatible natural crosslinker genipin. We produced scaffolds that were crosslinked with 1.0% genipin to obtain values of stiffness that were in between the stiffness of the superficial zone human AC of 600 ± 150 kPa and deep zone AC of 1854 ± 483 kPa, whereas the stiffness of 1.5% genipin crosslinked scaffold was similar to the stiffness of deep zone AC. The scaffolds were degradable, which was indicated by changes in the fibril structure and a decrease in the scaffold stiffness after seven months. Histological and immunohistochemical analysis after three weeks of culture with human articular chondrocytes (HACs) showed a cell viability of over 90% on the scaffolds and new extracellular matrix deposited on the scaffolds.
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Affiliation(s)
- Kuan Yong Ching
- Foundation, Study and Language Institute, University of Reading-Malaysia Campus, Iskandar Puteri, Malaysia.,Bioengineering Science, Faculty of Engineering, University of Southampton, Southampton, UK
| | - Orestis Andriotis
- Faculty of Engineering, National Centre for Advanced Tribology at Southampton, University of Southampton, Southampton, UK
| | - Bram Sengers
- Institute of Lightweight Design and Structural Biomechanics, Vienna University of Technology, Vienna, Austria
| | - Martin Stolz
- Bioengineering Science, Faculty of Engineering, University of Southampton, Southampton, UK
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Adilbekova A, Yertayeva A. Pickering emulsions stabilized by some inorganic materials. CHEMICAL BULLETIN OF KAZAKH NATIONAL UNIVERSITY 2021. [DOI: 10.15328/cb1135] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
The paper presents studies of various solid stabilizers of emulsions based on inorganic materials. Inorganic colloidal particles have an advantage for obtaining of stable emulsions due to their safety for use in food, cosmetics, pharmaceutical industry and medicine. Pickering emulsions have a higher biodegradability compared to classical emulsions stabilized with surfactants. An overview of inorganic substances such as silicon dioxide, clay materials, metal and metal oxide nanoparticles, calcium compounds and carbon particles used for stabilizing of Pickering emulsions is considered. A variety of solid inorganic particles as well as modification of their surfaces by surfactants allows to obtain the stable Pickering emulsions of different types for a wide range of applications. It should be noted that despite a large number of studies, this class of disperse systems is still not studied fully; various methods of their preparation and influence of solid particle size on stability and size of emulsions droplets are shown.
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11
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Uniting Electroceutical and Cosmeceutical Interventions in Combating Coronavirus Using Ԑ-Poly-l-Lysine. Sci Pharm 2020. [DOI: 10.3390/scipharm89010002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Combating the COVID-19 pandemic warrants the exploitation of all the available tools and implies a major focus on both the biological and the physical properties of the causing virus (SARS-CoV2). We hereby introduce a new prophylaxis hypothesis by decreasing the viral load in the body entrances such as the nose and the mouth using pharmaceutical and cosmeceutical preparations that incorporate viral electrostatic repulsive nanofibers fabricated from an abundant marine-derived or a fermentation product polymer; Ԑ-poly-l-lysine was prepared using the electrospinning technique.
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Hathout RM, Kassem DH. Positively Charged Electroceutical Spun Chitosan Nanofibers Can Protect Health Care Providers From COVID-19 Infection: An Opinion. Front Bioeng Biotechnol 2020; 8:885. [PMID: 32974290 PMCID: PMC7461847 DOI: 10.3389/fbioe.2020.00885] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2020] [Accepted: 07/09/2020] [Indexed: 01/10/2023] Open
Affiliation(s)
- Rania M. Hathout
- Department of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmacy, Ain Shams University, Cairo, Egypt
| | - Dina H. Kassem
- Department of Biochemistry, Faculty of Pharmacy, Ain Shams University, Cairo, Egypt
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13
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Filová E, Tonar Z, Lukášová V, Buzgo M, Litvinec A, Rampichová M, Beznoska J, Plencner M, Staffa A, Daňková J, Soural M, Chvojka J, Malečková A, Králíčková M, Amler E. Hydrogel Containing Anti-CD44-Labeled Microparticles, Guide Bone Tissue Formation in Osteochondral Defects in Rabbits. NANOMATERIALS (BASEL, SWITZERLAND) 2020; 10:E1504. [PMID: 32751860 PMCID: PMC7466545 DOI: 10.3390/nano10081504] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/25/2020] [Revised: 07/23/2020] [Accepted: 07/28/2020] [Indexed: 12/14/2022]
Abstract
Hydrogels are suitable for osteochondral defect regeneration as they mimic the viscoelastic environment of cartilage. However, their biomechanical properties are not sufficient to withstand high mechanical forces. Therefore, we have prepared electrospun poly-ε-caprolactone-chitosan (PCL-chit) and poly(ethylene oxide)-chitosan (PEO-chit) nanofibers, and FTIR analysis confirmed successful blending of chitosan with other polymers. The biocompatibility of PCL-chit and PEO-chit scaffolds was tested; fibrochondrocytes and chondrocytes seeded on PCL-chit showed superior metabolic activity. The PCL-chit nanofibers were cryogenically grinded into microparticles (mean size of about 500 µm) and further modified by polyethylene glycol-biotin in order to bind the anti-CD44 antibody, a glycoprotein interacting with hyaluronic acid (PCL-chit-PEGb-antiCD44). The PCL-chit or PCL-chit-PEGb-antiCD44 microparticles were mixed with a composite gel (collagen/fibrin/platelet rich plasma) to improve its biomechanical properties. The storage modulus was higher in the composite gel with microparticles compared to fibrin. The Eloss of the composite gel and fibrin was higher than that of the composite gel with microparticles. The composite gel either with or without microparticles was further tested in vivo in a model of osteochondral defects in rabbits. PCL-chit-PEGb-antiCD44 significantly enhanced osteogenic regeneration, mainly by desmogenous ossification, but decreased chondrogenic differentiation in the defects. PCL-chit-PEGb showed a more homogeneous distribution of hyaline cartilage and enhanced hyaline cartilage differentiation.
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Affiliation(s)
- Eva Filová
- Department of Tissue Engineering, Institute of Experimental Medicine of the Czech Academy of Science, Videnska 1083, 142 20 Prague 4, Czech Republic; (E.F.); (M.B.); (A.L.); (M.R.); (M.P.); (A.S.); (J.D.); (E.A.)
- Institute of Biophysics, 2nd Faculty of Medicine, Charles University, V Uvalu 84, 150 06 Prague 5, Czech Republic
| | - Zbyněk Tonar
- Institute of Histology and Embryology and Biomedical Center, Faculty of Medicine in Pilsen, Charles University in Prague, Husova 3, 305 06 Pilsen, Czech Republic; (Z.T.); (A.M.); (M.K.)
| | - Věra Lukášová
- Department of Tissue Engineering, Institute of Experimental Medicine of the Czech Academy of Science, Videnska 1083, 142 20 Prague 4, Czech Republic; (E.F.); (M.B.); (A.L.); (M.R.); (M.P.); (A.S.); (J.D.); (E.A.)
| | - Matěj Buzgo
- Department of Tissue Engineering, Institute of Experimental Medicine of the Czech Academy of Science, Videnska 1083, 142 20 Prague 4, Czech Republic; (E.F.); (M.B.); (A.L.); (M.R.); (M.P.); (A.S.); (J.D.); (E.A.)
- Institute of Biophysics, 2nd Faculty of Medicine, Charles University, V Uvalu 84, 150 06 Prague 5, Czech Republic
| | - Andrej Litvinec
- Department of Tissue Engineering, Institute of Experimental Medicine of the Czech Academy of Science, Videnska 1083, 142 20 Prague 4, Czech Republic; (E.F.); (M.B.); (A.L.); (M.R.); (M.P.); (A.S.); (J.D.); (E.A.)
| | - Michala Rampichová
- Department of Tissue Engineering, Institute of Experimental Medicine of the Czech Academy of Science, Videnska 1083, 142 20 Prague 4, Czech Republic; (E.F.); (M.B.); (A.L.); (M.R.); (M.P.); (A.S.); (J.D.); (E.A.)
| | - Jiří Beznoska
- Hospital of Rudolfa and Stefanie, a. s., Máchova 400, 256 30 Benešov, Czech Republic;
| | - Martin Plencner
- Department of Tissue Engineering, Institute of Experimental Medicine of the Czech Academy of Science, Videnska 1083, 142 20 Prague 4, Czech Republic; (E.F.); (M.B.); (A.L.); (M.R.); (M.P.); (A.S.); (J.D.); (E.A.)
| | - Andrea Staffa
- Department of Tissue Engineering, Institute of Experimental Medicine of the Czech Academy of Science, Videnska 1083, 142 20 Prague 4, Czech Republic; (E.F.); (M.B.); (A.L.); (M.R.); (M.P.); (A.S.); (J.D.); (E.A.)
| | - Jana Daňková
- Department of Tissue Engineering, Institute of Experimental Medicine of the Czech Academy of Science, Videnska 1083, 142 20 Prague 4, Czech Republic; (E.F.); (M.B.); (A.L.); (M.R.); (M.P.); (A.S.); (J.D.); (E.A.)
| | - Miroslav Soural
- Department of Organic Chemistry, Faculty of Science, Palacky University, 17. listopadu 12, 771 46 Olomouc, Czech Republic;
| | - Jiří Chvojka
- Faculty of Textile Engineering, Technical University of Liberec, Studentská 2, 461 17 Liberec, Czech Republic;
| | - Anna Malečková
- Institute of Histology and Embryology and Biomedical Center, Faculty of Medicine in Pilsen, Charles University in Prague, Husova 3, 305 06 Pilsen, Czech Republic; (Z.T.); (A.M.); (M.K.)
| | - Milena Králíčková
- Institute of Histology and Embryology and Biomedical Center, Faculty of Medicine in Pilsen, Charles University in Prague, Husova 3, 305 06 Pilsen, Czech Republic; (Z.T.); (A.M.); (M.K.)
| | - Evžen Amler
- Department of Tissue Engineering, Institute of Experimental Medicine of the Czech Academy of Science, Videnska 1083, 142 20 Prague 4, Czech Republic; (E.F.); (M.B.); (A.L.); (M.R.); (M.P.); (A.S.); (J.D.); (E.A.)
- Institute of Biophysics, 2nd Faculty of Medicine, Charles University, V Uvalu 84, 150 06 Prague 5, Czech Republic
- Student Science s.r.o., Národních Hrdinů 279, Dolní Počernice, 190 12 Prague, Czech Republic
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14
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Chen X, Lu B, Zhou D, Shao M, Xu W, Zhou Y. Photocrosslinking maleilated hyaluronate/methacrylated poly (vinyl alcohol) nanofibrous mats for hydrogel wound dressings. Int J Biol Macromol 2019; 155:903-910. [PMID: 31730992 DOI: 10.1016/j.ijbiomac.2019.11.048] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2019] [Revised: 10/29/2019] [Accepted: 11/07/2019] [Indexed: 01/19/2023]
Abstract
Although electrospinning of nanofibrous scaffolds benefit to wound healing have been developed at a fast pace, achieving nanofibrous scaffolds with high absorptivity by green electrospinning and crosslinking techniques is still a great challenge. Here, we developed a maleilated hyaluronate/methacrylated poly (vinyl alcohol) (MHA) (MaPVA) composite nanofibers by electrospinning from pure water solvent and followed by photopolymerization to form crosslinking nanofibers network. Electrospinnability of MHA/MaPVA blend systems were investigated and the results shows that the morphology and diameter of the nanofibers were mainly affected by MHA/MaPVA weight ratios by changing viscosity and conductivity of the blend solutions. The crystalline microstructure of the electrospun fibers was not well developed due to intermolecular hydrogen bonding interaction between the molecules of MHA and MaPVA. The photocrosslinking MHA/MaPVA nanofibrous mats can swell to form fibrous hydrogels with high water absorption, meanwhile it is cytocompatible and capable of promoting the cell attachment, which render it great potential for wound dressings.
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Affiliation(s)
- Xiao Chen
- College of Materials Science and Engineering, Wuhan Textile University, Wuhan 430073, People's Republic of China
| | - Bo Lu
- School of Chemistry, Chemical Engineering and Life Sciences, Wuhan University of Technology, Wuhan 430070, People's Republic of China
| | - Ding Zhou
- Key Laboratory of Green Processing and Functional Textiles of New Textile Materials, Ministry of Education, Wuhan Textile University, Wuhan 430073, People's Republic of China
| | - Mei Shao
- School of Chemistry, Chemical Engineering and Life Sciences, Wuhan University of Technology, Wuhan 430070, People's Republic of China
| | - Weilin Xu
- Key Laboratory of Green Processing and Functional Textiles of New Textile Materials, Ministry of Education, Wuhan Textile University, Wuhan 430073, People's Republic of China
| | - Yingshan Zhou
- College of Materials Science and Engineering, Wuhan Textile University, Wuhan 430073, People's Republic of China; Key Laboratory of Green Processing and Functional Textiles of New Textile Materials, Ministry of Education, Wuhan Textile University, Wuhan 430073, People's Republic of China.
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15
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Yahia S, Khalil IA, El-Sherbiny IM. Sandwich-Like Nanofibrous Scaffolds for Bone Tissue Regeneration. ACS APPLIED MATERIALS & INTERFACES 2019; 11:28610-28620. [PMID: 31328910 DOI: 10.1021/acsami.9b06359] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Advanced bone healing approaches included a wide range of biomaterials that mainly mimic the composition, structure, and properties of bone extracellular matrix with osteogenic activity. The present study aimed to develop a sandwich-like structure of electrospun nanofibers (NFs) based on polycaprolactone (PCL) and chitosan/polyethylene oxide (CS/PEO) composite to stimulate bone fracture healing. The morphology of the fabricated scaffolds was examined using scanning electron microscopy (SEM). Apatite deposition was evaluated using simulated body fluid (SBF). The physicochemical and mechanical properties of samples were analyzed by Fourier transform infrared, differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), and universal testing machine. SEM images exhibited a porous three-dimensional structure with NF diameters of 514-4745 nm and 68-786 nm for PCL NFs layer and the sandwich-like NFs scaffolds, respectively. Deposition of apatite crystal on scaffolds started at week 2 followed by heavy deposition at week 8. This was confirmed by measuring the consumption of calcium and phosphorous ions from SBF. Thermal stability of scaffolds was confirmed using DSC and TGA. Moreover, the PCL NF layer in the middle of the developed sandwich structure reinforced the scaffolds with bear load up to 12.224 ± 1.12 MPa and Young's modulus of 17.53 ± 3.24 MPa. The scaffolds' porous structure enhanced both cell propagation and proliferation. Besides, the presence of CS in the outer NF layers of the scaffolds increased the hydrophilicity, as evidenced by the reduction of contact angle from 116.6 to 57.6°, which is essential for cell attachment. Cell viability study on mesenchymal stem cells proved the cytocompatibility of the fabricated scaffolds. Finally, in vivo mandibular bone defect rabbit model was used to confirm the regeneration of a new healthy bone within 28 days. In conclusion, the developed scaffolds could be a promising solution to stimulate bone regeneration.
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Affiliation(s)
- Sarah Yahia
- Nanomedicine Lab, Center of Materials Sciences (CMS) , Zewail City of Science and Technology , 6th of October, Giza 12578 , Egypt
| | - Islam A Khalil
- Nanomedicine Lab, Center of Materials Sciences (CMS) , Zewail City of Science and Technology , 6th of October, Giza 12578 , Egypt
- Department of Pharmaceutics and Industrial Pharmacy, College of Pharmacy and Drug Manufacturing , Misr University of Science and Technology (MUST) , 6th of October, Giza 12566 , Egypt
| | - Ibrahim M El-Sherbiny
- Nanomedicine Lab, Center of Materials Sciences (CMS) , Zewail City of Science and Technology , 6th of October, Giza 12578 , Egypt
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16
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Kianfar P, Vitale A, Dalle Vacche S, Bongiovanni R. Photo-crosslinking of chitosan/poly(ethylene oxide) electrospun nanofibers. Carbohydr Polym 2019; 217:144-151. [DOI: 10.1016/j.carbpol.2019.04.062] [Citation(s) in RCA: 44] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2019] [Revised: 04/15/2019] [Accepted: 04/17/2019] [Indexed: 11/28/2022]
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17
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Stabilization of chitosan based electrospun nanofibers through a simple and safe method. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2019; 98:369-380. [DOI: 10.1016/j.msec.2018.12.133] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/16/2018] [Revised: 11/25/2018] [Accepted: 12/28/2018] [Indexed: 12/15/2022]
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18
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Chen P, Liu L, Pan J, Mei J, Li C, Zheng Y. Biomimetic composite scaffold of hydroxyapatite/gelatin-chitosan core-shell nanofibers for bone tissue engineering. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2018; 97:325-335. [PMID: 30678918 DOI: 10.1016/j.msec.2018.12.027] [Citation(s) in RCA: 106] [Impact Index Per Article: 17.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/13/2018] [Revised: 11/23/2018] [Accepted: 12/09/2018] [Indexed: 11/30/2022]
Abstract
Good biocompatibility and osteogenesis of three-dimensional porous scaffolds are critical for bone tissue engineering. In this work, biomimetic hydroxyapatite/gelatin-chitosan core-shell nanofibers composite scaffolds have been fabricated to mimic both the specific structure and the chemical composition of natural bone. The coaxial electrospinning technique was introduced to prepare gelatin-chitosan core-shell structured nanofibers mat which formed three-dimensional porous structure for promoting cells growth. The gelatin-chitosan core-shell nanofibers formed Arginine-Glycine-Aspartic acid (RGD)-like structure to mimic the organic component of natural bone extracellular matrix. Hydroxyapatite (Ca10(PO4)6(OH)2, HAP), as the major mineral constituent of native bone, was then deposited onto the surface of gelatin-chitosan core-shell structured nanofibers by a wet chemical method. Compared with chitosan nanofibers, gelatin nanofibers and chitosan-gelatin composite nanofibers, gelatin-chitosan core-shell structured nanofibers improved the mineralization efficiency of hydroxyapatite and formed a homogeneous HAP deposit. When Human osteoblast like cell line (MG-63) were cultured on the materials, the results showed that hydroxyapatite deposited on the gelatin-chitosan core-shell structured nanofibers could further enhance osteoblast cell proliferation. The biomimetic composite scaffolds could be suggested as a promising material to promote osteoblast cell growth in bone tissue engineering.
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Affiliation(s)
- Peng Chen
- Department of Physics, Key Laboratory of ATMMT Ministry of Education, Zhejiang Sci-Tech University, Hangzhou 310018, People's Republic of China
| | - Leyun Liu
- Department of Physics, Key Laboratory of ATMMT Ministry of Education, Zhejiang Sci-Tech University, Hangzhou 310018, People's Republic of China
| | - Jiaqi Pan
- Department of Physics, Key Laboratory of ATMMT Ministry of Education, Zhejiang Sci-Tech University, Hangzhou 310018, People's Republic of China
| | - Jie Mei
- School of Chemistry & Bioengineering, Taizhou College of Nanjing Normal University, Taizhou 225300, People's Republic of China
| | - Chaorong Li
- Department of Physics, Key Laboratory of ATMMT Ministry of Education, Zhejiang Sci-Tech University, Hangzhou 310018, People's Republic of China
| | - Yingying Zheng
- Department of Physics, Key Laboratory of ATMMT Ministry of Education, Zhejiang Sci-Tech University, Hangzhou 310018, People's Republic of China.
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19
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Valente T, Ferreira JL, Henriques C, Borges JP, Silva JC. Polymer blending or fiber blending: A comparative study using chitosan and poly(ε-caprolactone) electrospun fibers. J Appl Polym Sci 2018. [DOI: 10.1002/app.47191] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Tiago Valente
- Faculty of Science and Technology, Physics Department; Universidade NOVA de Lisboa; Campus de Caparica, 2829-516, Caparica Portugal
| | - José Luís Ferreira
- CENIMAT/I3N, Faculty of Science and Technology, Physics Department; Universidade NOVA de Lisboa; Campus de Caparica, 2829-516, Caparica Portugal
| | - Célia Henriques
- CENIMAT/I3N, Faculty of Science and Technology, Physics Department; Universidade NOVA de Lisboa; Campus de Caparica, 2829-516, Caparica Portugal
| | - João Paulo Borges
- CENIMAT/I3N, Faculty of Science and Technology, Materials Science Department; Universidade NOVA de Lisboa; Campus de Caparica, 2829-516, Caparica Portugal
| | - Jorge Carvalho Silva
- CENIMAT/I3N, Faculty of Science and Technology, Physics Department; Universidade NOVA de Lisboa; Campus de Caparica, 2829-516, Caparica Portugal
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20
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Avsar G, Agirbasli D, Agirbasli MA, Gunduz O, Oner ET. Levan based fibrous scaffolds electrospun via co-axial and single-needle techniques for tissue engineering applications. Carbohydr Polym 2018; 193:316-325. [DOI: 10.1016/j.carbpol.2018.03.075] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2017] [Revised: 03/21/2018] [Accepted: 03/22/2018] [Indexed: 12/13/2022]
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21
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Investigating the Synthesis and Characterization of a Novel "Green" H₂O₂-Assisted, Water-Soluble Chitosan/Polyvinyl Alcohol Nanofiber for Environmental End Uses. NANOMATERIALS 2018; 8:nano8060395. [PMID: 29865198 PMCID: PMC6027504 DOI: 10.3390/nano8060395] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/08/2018] [Revised: 05/30/2018] [Accepted: 05/31/2018] [Indexed: 11/30/2022]
Abstract
The present work highlights the formation of a novel green nanofiber based on H2O2-assisted water-soluble chitosan/polyvinyl alcohol (WSCHT/PVA) by using water as an ecofriendly solvent and genipin used as a nontoxic cross-linker. The 20/80 blend ratio was found to have the most optimum uniform fiber morphology. WSCHT retained the same structure as WISCHT. The prepared nanofibers were characterized by Scanning electron microscopy (SEM), Fourier transform spectroscopy (FTIR), Thermo gravimetric analysis (TGA), Differential scanning calorimeter (DSC), X-ray diffraction (XRD), Water Contact Angle (WCA) and Ultraviolet-visible spectroscopy (UV-vis). During electrospinning, the crystalline microstructure of the WSCHT/PVA underwent better solidification and after cross-linking there was an increase in the melting temperature of the fiber. Swelling ratio studies revealed noticeable increase in hydrophilicity with increase of WSCHT, which was further demonstrated by the decrease of contact angle from 64.74° to 14.68°. WSCHT/PVA nanofiber mats exhibit excellent UV blocking protection with less than 5% transmittance value and also showed improved in vitro drug release properties with stable release for longer duration (cross-linked fibers) and burst release for shorter duration (uncross linked) fibers. Finally our experimental data demonstrates excellent adsorption ability of Colour Index (C.I.) reactive black 5 (RB5) due to protonated amino groups.
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22
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Bae S, DiBalsi MJ, Meilinger N, Zhang C, Beal E, Korneva G, Brown RO, Kornev KG, Lee JS. Heparin-Eluting Electrospun Nanofiber Yarns for Antithrombotic Vascular Sutures. ACS APPLIED MATERIALS & INTERFACES 2018; 10:8426-8435. [PMID: 29461035 DOI: 10.1021/acsami.7b14888] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
The surgical connection of blood vessels, anastomosis, is a critical procedure in many reparative, transplantation, and reconstructive surgical procedures. However, effective restoration of circulation is complicated by pathological clotting (thrombosis) or progressive occlusion due to excess cell proliferation that often leads to additional surgeries and increases morbidity and mortality risk for patients. Pharmaceutical agents have been tested to prevent these complications, but many have unacceptable systemic side effects. Therefore, an alternative approach to deliver these drugs at the site of injury in a controlled manner is necessary. The objective of this study was to develop electrospun nanofibers composed of polyester poly(lactide- co-glycolide) (PLGA), poly(ethylene oxide) (PEO), and positively charged copolymer, poly(lactide- co-glycolide)- graft-polyethylenimine (PgP) for electrostatic binding and release of heparin for application as an antithrombotic microvascular suture. PgP was synthesized with different coupling ratios between PLGA and branched polyethylenimine (bPEI) to obtain PgP1 (∼1 PLGA grafted to 1 bPEI) and PgP3.7 (∼3.7 PLGA grafted to 1 bPEI). Nanofiber yarns (PLGA/PEO/PgP1 and PLGA/PEO/PgP3.7) were fabricated by electrospinning. Heparin immobilization on the positively charged nanofiber yarns was visualized using fluorescein-conjugated heparin (F-Hep), and the amount of immobilized F-Hep was higher on both PLGA/PEO/PgP3.7 and PLGA/PEO/PgP1 than yarns without PgP (PLGA/PEO). We also found that F-Hep was released from both PgP-containing yarns in a sustained manner over 20 days, while over 60% of F-Hep was released within 4 h from PLGA/PEO. Finally, we observed that heparin-eluting nanofiber yarns with both PgP1 and PgP3.7 showed significantly longer clotting times than nanofiber yarns without PgP. The clotting time of PLGA/PEO/PgP3.7 was not significantly different than that of free heparin (0.5 μg/mL). These results show that heparin-eluting electrospun nanofiber yarns may offer a basis for the development of microvascular sutures with anticoagulant activity.
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Affiliation(s)
- Sooneon Bae
- Dental and Craniofacial Trauma Research & Tissue Regeneration Directorate , United States Army Institute of Surgical Research , JBSA Fort Sam Houston , Texas 78234 , United States
| | | | | | | | | | | | - Robert O Brown
- Department of Head & Neck Surgery , Greenville Health System , Greenville , South Carolina 29615 , United States
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23
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Bösiger P, Tegl G, Richard IM, Le Gat L, Huber L, Stagl V, Mensah A, Guebitz GM, Rossi RM, Fortunato G. Enzyme functionalized electrospun chitosan mats for antimicrobial treatment. Carbohydr Polym 2018; 181:551-559. [DOI: 10.1016/j.carbpol.2017.12.002] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2017] [Revised: 10/21/2017] [Accepted: 12/03/2017] [Indexed: 02/01/2023]
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24
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Qasim SB, Zafar MS, Najeeb S, Khurshid Z, Shah AH, Husain S, Rehman IU. Electrospinning of Chitosan-Based Solutions for Tissue Engineering and Regenerative Medicine. Int J Mol Sci 2018; 19:E407. [PMID: 29385727 PMCID: PMC5855629 DOI: 10.3390/ijms19020407] [Citation(s) in RCA: 164] [Impact Index Per Article: 27.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2017] [Revised: 01/22/2018] [Accepted: 01/24/2018] [Indexed: 12/17/2022] Open
Abstract
Electrospinning has been used for decades to generate nano-fibres via an electrically charged jet of polymer solution. This process is established on a spinning technique, using electrostatic forces to produce fine fibres from polymer solutions. Amongst, the electrospinning of available biopolymers (silk, cellulose, collagen, gelatine and hyaluronic acid), chitosan (CH) has shown a favourable outcome for tissue regeneration applications. The aim of the current review is to assess the current literature about electrospinning chitosan and its composite formulations for creating fibres in combination with other natural polymers to be employed in tissue engineering. In addition, various polymers blended with chitosan for electrospinning have been discussed in terms of their potential biomedical applications. The review shows that evidence exists in support of the favourable properties and biocompatibility of chitosan electrospun composite biomaterials for a range of applications. However, further research and in vivo studies are required to translate these materials from the laboratory to clinical applications.
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Affiliation(s)
- Saad B Qasim
- Department of Restorative and Prosthetic Dental Sciences, College of Dentistry, Dar Al Uloom University, P.O. Box 45142, Riyadh 11512, Saudi Arabia.
| | - Muhammad S Zafar
- Department of Restorative Dentistry, College of Dentistry, Taibah University, Al Madinah, Al Munawwarah 41311, Saudi Arabia.
- Department of Dental Materials, Islamic International Dental College, Riphah International University, Islamabad 44000, Pakistan.
| | - Shariq Najeeb
- Restorative Dental Sciences, Al-Farabi Colleges, Riyadh 361724, Saudi Arabia.
| | - Zohaib Khurshid
- College of Dentistry, King Faisal University, P.O. Box 380, Al-Hofuf, Al-Ahsa 31982, Saudi Arabia.
| | - Altaf H Shah
- Department of Preventive Dental Sciences, College of Dentistry, Dar Al Uloom University, Riyadh 11512, Saudi Arabia.
| | - Shehriar Husain
- Department of Dental Materials, College of Dentistry, Jinnah Sindh Medical University, Karachi 75110, Pakistan.
| | - Ihtesham Ur Rehman
- Materials Science and Engineering Department, Kroto Research Institute, University of Sheffield, Sheffield S3 7HQ, UK.
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25
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Bösiger P, Richard IMT, Le Gat L, Michen B, Schubert M, Rossi RM, Fortunato G. Application of response surface methodology to tailor the surface chemistry of electrospun chitosan-poly(ethylene oxide) fibers. Carbohydr Polym 2018; 186:122-131. [PMID: 29455969 DOI: 10.1016/j.carbpol.2018.01.038] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2017] [Revised: 01/10/2018] [Accepted: 01/10/2018] [Indexed: 12/20/2022]
Abstract
Chitosan is a promising biocompatible polymer for regenerative engineering applications, but its processing remains challenging due to limited solubility and rigid crystalline structure. This work represents the development of electrospun chitosan/poly(ethylene oxide) blend nanofibrous membranes by means of a numerical analysis in order to identify and tailor the main influencing parameters with respect to accessible surface nitrogen functionalities which are of importance for the biological activity as well as for further functionalization. Depending on the solution composition, both gradient fibers and homogenous blended fiber structures could be obtained with surface nitrogen concentrations varying between 0 and 6.4%. Response surface methodology (RSM) revealed chitosan/poly(ethylene oxide) ratio and chitosan molecular weight as the main influencing factors with respect to accessible nitrogen surface atoms and respective concentrations. The model showed good adequacy hence providing a tool to tailor the surface properties of chitosan/poly(ethylene oxide) blends by addressing the amount of accessible chitosan.
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Affiliation(s)
- Peter Bösiger
- Empa, Laboratory for Biomimetic Membranes and Textiles, Lerchenfeldstrasse 5, CH-9014 St. Gallen, Switzerland; University of Freiburg, Faculty of Environment & Natural Resources, Chair of Forest Botany, Bertoldstrasse 17, DE-79085 Freiburg, Germany
| | - Isabelle M T Richard
- Empa, Laboratory for Biomimetic Membranes and Textiles, Lerchenfeldstrasse 5, CH-9014 St. Gallen, Switzerland; École européenne de Chimie, Polymères et Matériaux, Université de Strasbourg, 25 Rue Becquerel, FR-67087 Strasbourg, France
| | - Luce Le Gat
- Empa, Laboratory for Biomimetic Membranes and Textiles, Lerchenfeldstrasse 5, CH-9014 St. Gallen, Switzerland; CBMN (UMR 5248, CNRS), 3BIO's Team, University of Bordeaux, Allée Geoffroy Saint-Hilaire, 33600 Pessac, France
| | - Benjamin Michen
- Empa, Laboratory for Applied Wood Materials, Überlandstrasse 129, CH-8600 Dübendorf, Switzerland; Wood Materials Science, Institute for Building Materials, ETH Zürich, Stefano-Franscini-Platz 3, 8093 Zürich, Switzerland
| | - Mark Schubert
- Empa, Laboratory for Applied Wood Materials, Überlandstrasse 129, CH-8600 Dübendorf, Switzerland
| | - René M Rossi
- Empa, Laboratory for Biomimetic Membranes and Textiles, Lerchenfeldstrasse 5, CH-9014 St. Gallen, Switzerland
| | - Giuseppino Fortunato
- Empa, Laboratory for Biomimetic Membranes and Textiles, Lerchenfeldstrasse 5, CH-9014 St. Gallen, Switzerland.
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26
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García-López E, Olvera-Trejo D, Velásquez-García LF. 3D printed multiplexed electrospinning sources for large-scale production of aligned nanofiber mats with small diameter spread. NANOTECHNOLOGY 2017; 28:425302. [PMID: 28922139 DOI: 10.1088/1361-6528/aa86cc] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
We report the design, fabrication, and characterization of novel, low-cost, and modular miniaturized nanofiber electrospinning sources for the scalable production of non-woven aligned nanofiber mats with low diameter variation. The devices are monolithic arrays of electrospinning emitters made via stereolithography; the emitters are arranged so each element has an independent line of sight to a rotating collector surface. Linear and zigzag emitter packing were evaluated using a PEO solution with the aim of maximizing the throughput of nanofibers with the smallest diameter and narrowest distribution. Current versus flowrate characterization of the devices showed that for a given flowrate a zigzag array produces more current per emitter than a linear array of the same emitter pitch and array size. In addition, the data demonstrate that larger and denser arrays have a net gain in flow rate per unit of active length. Visual inspection of the devices suggests uniform operation in devices with as many as 17 emitters with 300 μm inner diameter and 1.5 mm emitter gap. Well-aligned nanofiber mats were collected on a rotating drum and characterized; the 17-emitter device produced the same narrow nanofiber distribution (∼81 nm average diameter, ∼17 nm standard deviation) for all tested flow rates, which is strikingly different to the performance shown by 1-emitter sources where the average fiber diameter significantly increased and the statistics notably widened when the flowrate increases. Therefore, the data demonstrate that massively multiplexing the emitters is a viable approach to greatly increase the throughput of non-woven aligned nanofiber mats without sacrificing the statistics of the nanofibers generated. The production of dry nanofibers by the 17-emitter array is estimated at 33.0 mg min-1 (1.38 mg min-1 per mm of active length), which compares favorably with the reported multiplexed electrospinning arrays with emitters distributed along a line.
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Affiliation(s)
- Erika García-López
- Tecnológico de Monterrey, Escuela de Ingeniería y Ciencias, Ave. Eugenio Garza Sada 2501, Monterrey, N.L., 64849, México. Microsystems Technology Laboratories, Massachusetts Institute of Technology, 77 Massachusetts Ave., Cambridge, MA, 02139, United States of America
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Photocrosslinked maleilated chitosan/methacrylated poly (vinyl alcohol) bicomponent nanofibrous scaffolds for use as potential wound dressings. Carbohydr Polym 2017; 168:220-226. [DOI: 10.1016/j.carbpol.2017.03.044] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2016] [Revised: 03/08/2017] [Accepted: 03/13/2017] [Indexed: 11/22/2022]
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Yousefi I, Pakravan M, Rahimi H, Bahador A, Farshadzadeh Z, Haririan I. An investigation of electrospun Henna leaves extract-loaded chitosan based nanofibrous mats for skin tissue engineering. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2017; 75:433-444. [DOI: 10.1016/j.msec.2017.02.076] [Citation(s) in RCA: 76] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/19/2016] [Revised: 01/18/2017] [Accepted: 02/14/2017] [Indexed: 12/25/2022]
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Chen Q, Xin ZX, Saha P, Kim JK. Fabrication of chitosan/PEO nanofiber mats with mica by electrospinning. JOURNAL OF POLYMER ENGINEERING 2017. [DOI: 10.1515/polyeng-2015-0542] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
Chitosan (CS) is an excellent biocompatible natural antibacterial material that has attracted researchers to study its biological applications as artificial tissue scaffolds and wound-healing materials. In this research, CS has been mixed with polyethylene oxide (PEO) and mica at various weight ratios to prepare nanofibers; however, it is found to be a difficult task to prepare the nanofiber using pure CS. The composite in form of nanofibrous mat was prepared with CS/PEO solution and CS/PEO/mica solution using electrospinning. Processing conditions were adjusted to a flow rate of 6 ml/min, with an applied voltage of 27 kV. The distance of capillary tip to target was kept about 10 cm at 25°C with a collector having a speed of 200 rpm. The spinnability of solutions was also evaluated by using both plate and cylinder collectors. The composite mats were analyzed in detail using scanning electron microscopy (SEM), Fourier transform infrared (FTIR), thermogravimetric analysis, and X-ray diffractogram (XRD). SEM photomicrograms indicated that the morphology and diameter of the nanofibers were affected by weight ratio of CS/PEO, concentration of mica, and types of collector. Furthermore, mica was incorporated in the CS/PEO matrix to enhance the specific surface area. Molecular interactions between CS/PEO and mica were investigated using FTIR and XRD.
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Electrospinning of chitosan/PVA nanofibrous membrane at ultralow solvent concentration. JOURNAL OF POLYMER RESEARCH 2017. [DOI: 10.1007/s10965-017-1238-z] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Gomes S, Rodrigues G, Martins G, Henriques C, Silva JC. Evaluation of nanofibrous scaffolds obtained from blends of chitosan, gelatin and polycaprolactone for skin tissue engineering. Int J Biol Macromol 2017; 102:1174-1185. [PMID: 28487195 DOI: 10.1016/j.ijbiomac.2017.05.004] [Citation(s) in RCA: 95] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2017] [Revised: 04/28/2017] [Accepted: 05/01/2017] [Indexed: 12/16/2022]
Abstract
Polymer blending is a strategy commonly used to obtain hybrid materials possessing properties better than those of the individual constituents regarding their use in scaffolds for Tissue Engineering. In the present work, the scaffolds produced by electrospinning solutions of polymeric blends obtained using a polyester (polycaprolactone, PCL), a polysaccharide (chitosan, CS) and a protein (gelatin extracted from cold water fish skin, GEL), were investigated. Solutions conductivity, shear viscosity and surface tension were determined. GEL-containing scaffolds were crosslinked with vapour phase glutaraldehyde (GTA). The scaffolds were characterized physico-chemically regarding fibre morphology, porosity, water contact angle, mechanical properties, chemical bonds and fibre and dimensional stability upon immersion in water and cell culture medium. The scaffolds were further tested in vitro for cell adhesion, growth and morphology of human foetal fibroblasts (cell line HFFF2). Results show that the nanofibrous scaffolds are hydrophilic and display the typical porosity of non-woven fibre mats. The CS/PCL and CS/PCL/GEL scaffolds have the highest elastic modulus (48MPa). Dimensional stability is best for the CS/PCL/GEL scaffolds. FTIR spectra confirm the occurrence of cross-linking reactions of GTA with both GEL and CS. Cell adhesion ratio ranked from excellent (close to 100%) to satisfactory (around 50%) in the order PCL/GEL>CS/GEL>CS/PCL/GEL>CS/PCL. Cell populations show an extended lag phase in comparison with the controls but cell proliferation occurs on all scaffolds until confluence is reached. In conclusion, all scaffolds studied possess characteristics that enable them to be used in skin tissue engineering but the CS/PCL/GEL scaffolds have better physical properties whereas the PCL/GEL scaffolds support a higher cell adhesion.
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Affiliation(s)
- Susana Gomes
- Departamento de Física, Faculdade de Ciências e Tecnologia da Universidade Nova de Lisboa, 2829-516 Caparica, Portugal
| | - Gabriela Rodrigues
- Centro de Ecologia, Evolução e Alterações Ambientais/Departamento de Biologia Animal Faculdade de Ciências da Universidade de Lisboa, Campo Grande, 1749-016 Lisboa, Portugal
| | - Gabriel Martins
- Centro de Ecologia, Evolução e Alterações Ambientais/Departamento de Biologia Animal Faculdade de Ciências da Universidade de Lisboa, Campo Grande, 1749-016 Lisboa, Portugal; Instituto Gulbenkian de Ciência, R. da Quinta Grande, 6, 2780-156 Oeiras, Portugal
| | - Célia Henriques
- Departamento de Física, Faculdade de Ciências e Tecnologia da Universidade Nova de Lisboa, 2829-516 Caparica, Portugal
| | - Jorge Carvalho Silva
- Departamento de Física, Faculdade de Ciências e Tecnologia da Universidade Nova de Lisboa, 2829-516 Caparica, Portugal.
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Abdel-Mohsen A, Jancar J, Massoud D, Fohlerova Z, Elhadidy H, Spotz Z, Hebeish A. Novel chitin/chitosan-glucan wound dressing: Isolation, characterization, antibacterial activity and wound healing properties. Int J Pharm 2016; 510:86-99. [DOI: 10.1016/j.ijpharm.2016.06.003] [Citation(s) in RCA: 64] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2016] [Revised: 05/19/2016] [Accepted: 06/01/2016] [Indexed: 10/21/2022]
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Potential of Electrospun Nanofibers for Biomedical and Dental Applications. MATERIALS 2016; 9:ma9020073. [PMID: 28787871 PMCID: PMC5456492 DOI: 10.3390/ma9020073] [Citation(s) in RCA: 105] [Impact Index Per Article: 13.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/29/2015] [Revised: 01/06/2016] [Accepted: 01/18/2016] [Indexed: 12/26/2022]
Abstract
Electrospinning is a versatile technique that has gained popularity for various biomedical applications in recent years. Electrospinning is being used for fabricating nanofibers for various biomedical and dental applications such as tooth regeneration, wound healing and prevention of dental caries. Electrospun materials have the benefits of unique properties for instance, high surface area to volume ratio, enhanced cellular interactions, protein absorption to facilitate binding sites for cell receptors. Extensive research has been conducted to explore the potential of electrospun nanofibers for repair and regeneration of various dental and oral tissues including dental pulp, dentin, periodontal tissues, oral mucosa and skeletal tissues. However, there are a few limitations of electrospinning hindering the progress of these materials to practical or clinical applications. In terms of biomaterials aspects, the better understanding of controlled fabrication, properties and functioning of electrospun materials is required to overcome the limitations. More in vivo studies are definitely required to evaluate the biocompatibility of electrospun scaffolds. Furthermore, mechanical properties of such scaffolds should be enhanced so that they resist mechanical stresses during tissue regeneration applications. The objective of this article is to review the current progress of electrospun nanofibers for biomedical and dental applications. In addition, various aspects of electrospun materials in relation to potential dental applications have been discussed.
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Vashisth P, Nikhil K, Roy P, Pruthi PA, Singh RP, Pruthi V. A novel gellan–PVA nanofibrous scaffold for skin tissue regeneration: Fabrication and characterization. Carbohydr Polym 2016; 136:851-9. [DOI: 10.1016/j.carbpol.2015.09.113] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2014] [Revised: 09/29/2015] [Accepted: 09/30/2015] [Indexed: 11/29/2022]
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Shah BR, Li Y, Jin W, An Y, He L, Li Z, Xu W, Li B. Preparation and optimization of Pickering emulsion stabilized by chitosan-tripolyphosphate nanoparticles for curcumin encapsulation. Food Hydrocoll 2016. [DOI: 10.1016/j.foodhyd.2015.07.015] [Citation(s) in RCA: 198] [Impact Index Per Article: 24.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
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36
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Potential of electrospun core–shell structured gelatin–chitosan nanofibers for biomedical applications. Carbohydr Polym 2016; 136:1098-107. [DOI: 10.1016/j.carbpol.2015.10.014] [Citation(s) in RCA: 77] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2015] [Revised: 10/04/2015] [Accepted: 10/05/2015] [Indexed: 01/09/2023]
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Surucu S, Turkoglu Sasmazel H. DBD atmospheric plasma-modified, electrospun, layer-by-layer polymeric scaffolds for L929 fibroblast cell cultivation. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2015; 27:111-32. [PMID: 26494511 DOI: 10.1080/09205063.2015.1111717] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
This paper reported a study related to atmospheric pressure dielectric barrier discharge (DBD) Ar + O2 and Ar + N2 plasma modifications to alter surface properties of 3D PCL/Chitosan/PCL layer-by-layer hybrid scaffolds and to improve mouse fibroblast (L929 ATCC CCL-1) cell attachment, proliferation, and growth. The scaffolds were fabricated using electrospinning technique and each layer was electrospun sequentially on top of the other. The surface modifications were performed with an atmospheric pressure DBD plasma under different gas flow rates (50, 60, 70, 80, 90, and 100 sccm) and for different modification times (0.5-7 min), and then the chemical and topographical characterizations of the modified samples were done by contact angle (CA) measurements, scanning electron microscopy (SEM), atomic force microscopy, and X-ray photoelectron spectroscopy. The samples modified with Ar + O2 plasma for 1 min under 70 cm(3)/min O2 flow rate (71.077° ± 3.578) showed a 18.83% decrease compare to unmodified samples' CA value (84.463° ± 3.864). Comparing with unmodified samples, the average fiber diameter values for plasma-modified samples by Ar + O2 (1 min 70 sccm) and Ar + N2 (40 s 70 sccm) increased 40.756 and 54.295%, respectively. Additionally, the average inter-fiber pore size values exhibited decrease of 37.699 and 48.463% for the same Ar + O2 and Ar + N2 plasma-modified samples, respectively, compare to unmodified samples. Biocompatibility performance was determined with MTT assay, fluorescence, Giemsa, and confocal imaging as well as SEM. The results showed that Ar + O2-based plasma modification increased the hydrophilicity and oxygen functionality of the surface, thus affecting the cell viability and proliferation on/within scaffolds.
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Affiliation(s)
- Seda Surucu
- a Department of Metallurgical and Materials Engineering , Atilim University , Ankara , Turkey
| | - Hilal Turkoglu Sasmazel
- a Department of Metallurgical and Materials Engineering , Atilim University , Ankara , Turkey
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Genipin-crosslinked electrospun chitosan nanofibers: Determination of crosslinking conditions and evaluation of cytocompatibility. Carbohydr Polym 2015; 130:166-74. [DOI: 10.1016/j.carbpol.2015.05.039] [Citation(s) in RCA: 66] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2014] [Revised: 05/11/2015] [Accepted: 05/16/2015] [Indexed: 11/20/2022]
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39
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Shao L, Ren Y, Wang Z, Qi C, Lin Y. Developing chitosan-based composite nanofibers for supporting metal catalysts. POLYMER 2015. [DOI: 10.1016/j.polymer.2015.08.031] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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40
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Chen G, Fang D, Wang K, Nie J, Ma G. Core-shell structure PEO/CS nanofibers based on electric field induced phase separation via electrospinning and its application. ACTA ACUST UNITED AC 2015. [DOI: 10.1002/pola.27702] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Guangkai Chen
- Beijing Laboratory of Biomedical Materials; State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology; Beijing 100029 People's Republic of China
- School of Materials Science and Engineering, Changzhou University; Changzhou Jiangsu 213164 People's Republic of China
| | - Dawei Fang
- Beijing Laboratory of Biomedical Materials; State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology; Beijing 100029 People's Republic of China
| | - Kemin Wang
- School of Materials Science and Engineering, Changzhou University; Changzhou Jiangsu 213164 People's Republic of China
| | - Jun Nie
- Beijing Laboratory of Biomedical Materials; State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology; Beijing 100029 People's Republic of China
| | - Guiping Ma
- Beijing Laboratory of Biomedical Materials; State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology; Beijing 100029 People's Republic of China
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41
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Vaidya P, Grove T, Edgar KJ, Goldstein AS. Surface grafting of chitosan shell, polycaprolactone core fiber meshes to confer bioactivity. J BIOACT COMPAT POL 2015. [DOI: 10.1177/0883911515571147] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Electrospinning of polyesters (e.g. polycaprolactone) is an attractive approach for fabricating meshes with mechanical properties suitable for orthopedic tissue engineering applications. However, the resultant fused-fiber meshes are biologically inert, necessitating surface grafting of bioactive factors to stimulate cell adhesion. In this study, hydrophilic meshes displaying primary amine groups were prepared by coaxially electrospinning fibers with a chitosan/poly(ethylene oxide) shell and a polycaprolactone core. These chitosan–polycaprolactone fiber meshes were mechanically robust (Young’s modulus of 10.1 ± 1.6 MPa under aqueous conditions) with tensile properties comparable to polycaprolactone fiber meshes. Next, the integrin adhesion peptide arginine–glycine–aspartic acid was grafted to chitosan–polycaprolactone fiber meshes. Cell culture studies using bone marrow stromal cells indicated significantly better initial attachment and spreading on arginine–glycine–aspartic acid–conjugated fiber meshes. Specifically, metabolic activity, projected cell area, and cell aspect ratio were all elevated relative to cells seeded on polycaprolactone and unmodified chitosan–polycaprolactone meshes. These results demonstrate a flexible two-step process for creating bioactive electrospun fiber meshes.
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Affiliation(s)
- Prasad Vaidya
- Department of Chemical Engineering, Virginia Tech, Blacksburg, VA, USA
| | - Tijana Grove
- Department of Chemistry, Virginia Tech, Blacksburg, VA, USA
| | - Kevin J Edgar
- Department of Sustainable Biomaterials, Virginia Tech, Blacksburg, VA, USA
| | - Aaron S Goldstein
- Department of Chemical Engineering, Virginia Tech, Blacksburg, VA, USA
- School of Biomedical Engineering and Sciences, Virginia Tech, Blacksburg, VA, USA
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42
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Yuan H, Li B, Liang K, Lou X, Zhang Y. Regulating drug release from pH- and temperature-responsive electrospun CTS-g-PNIPAAm/poly(ethylene oxide) hydrogel nanofibers. Biomed Mater 2014; 9:055001. [DOI: 10.1088/1748-6041/9/5/055001] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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43
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Shen L, Li X, Yang Y, Wang X. High flux PEO doped chitosan ultrafiltration composite membrane based on PAN nanofibrous substrate. ACTA ACUST UNITED AC 2014. [DOI: 10.1179/1432891714z.000000000799] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
Affiliation(s)
- L. Shen
- State Key Lab for Modification of Chemical Fibers and Polymer MaterialDonghua University, Shanghai 201620, China
| | - X. Li
- State Key Lab for Modification of Chemical Fibers and Polymer MaterialDonghua University, Shanghai 201620, China
| | - Y. Yang
- State Key Lab for Modification of Chemical Fibers and Polymer MaterialDonghua University, Shanghai 201620, China
| | - X. Wang
- State Key Lab for Modification of Chemical Fibers and Polymer MaterialDonghua University, Shanghai 201620, China
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Yao Y, Wang J, Cui Y, Xu R, Wang Z, Zhang J, Wang K, Li Y, Zhao Q, Kong D. Effect of sustained heparin release from PCL/chitosan hybrid small-diameter vascular grafts on anti-thrombogenic property and endothelialization. Acta Biomater 2014; 10:2739-49. [PMID: 24602806 DOI: 10.1016/j.actbio.2014.02.042] [Citation(s) in RCA: 156] [Impact Index Per Article: 15.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2013] [Revised: 02/19/2014] [Accepted: 02/24/2014] [Indexed: 01/22/2023]
Abstract
Thrombus formation and subsequent occlusion are the main reasons for the failure of small-diameter vascular grafts. In this study, a hybrid small-diameter vascular graft was developed from synthetic polymer poly(ε-caprolactone) (PCL) and natural polymer chitosan (CS) by the co-electrospinning technique. Heparin was immobilized on the grafts through ionic bonding between heparin and CS fibers. The immobilization was relatively stable, and heparin could continuously release from the grafts for more than 1month. Heparin functionalization evidently improved the hemocompatibility of the PCL/CS vascular grafts, which was illustrated by the reduced platelet adhesion and prolonged coagulation time (activated partial thromboplastin time, prothrombin time and thromboplastin time) as shown in the human plasma assay, and was further confirmed by the ex vivo arteriovenous shunt experiment. In vitro cell proliferation assay showed that heparin can promote the growth of human umbilical vein endothelial cells, while moderately inhibiting the proliferation of vascular smooth muscle cells, a main factor for neointimal hyperplasia. Implantation in rat abdominal aorta was performed for 1month. Results indicate that sustained release of heparin provided optimal anti-thrombogenic effect by reducing thrombus formation and maintaining the patency. Furthermore, heparin functionalization also enhanced in situ endothelialization, thereby preventing the occurrence of restenosis. In conclusion, it provides a facile and useful technique for the development of heparinized medical devices, including vascular grafts.
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Zhao W, Liu W, Li J, Lin X, Wang Y. Preparation of animal polysaccharides nanofibers by electrospinning and their potential biomedical applications. J Biomed Mater Res A 2014; 103:807-18. [DOI: 10.1002/jbm.a.35187] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2014] [Revised: 03/24/2014] [Accepted: 03/29/2014] [Indexed: 01/19/2023]
Affiliation(s)
- Wen Zhao
- Key Laboratory for Space Biosciences and Biotechnology; School of Life Sciences, Northwestern Polytechnical University; Xi'an Shaanxi People's Republic of China
| | - Wenlong Liu
- Key Laboratory for Space Biosciences and Biotechnology; School of Life Sciences, Northwestern Polytechnical University; Xi'an Shaanxi People's Republic of China
| | - Jiaojiao Li
- Key Laboratory for Space Biosciences and Biotechnology; School of Life Sciences, Northwestern Polytechnical University; Xi'an Shaanxi People's Republic of China
| | - Xiao Lin
- Key Laboratory for Space Biosciences and Biotechnology; School of Life Sciences, Northwestern Polytechnical University; Xi'an Shaanxi People's Republic of China
| | - Ying Wang
- Key Laboratory for Space Biosciences and Biotechnology; School of Life Sciences, Northwestern Polytechnical University; Xi'an Shaanxi People's Republic of China
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46
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47
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Jiang T, Deng M, James R, Nair LS, Laurencin CT. Micro- and nanofabrication of chitosan structures for regenerative engineering. Acta Biomater 2014; 10:1632-45. [PMID: 23851172 DOI: 10.1016/j.actbio.2013.07.003] [Citation(s) in RCA: 89] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2013] [Revised: 05/31/2013] [Accepted: 07/01/2013] [Indexed: 11/24/2022]
Abstract
Repair and regeneration of human tissues and organs using biomaterials, cells and/or growth factors is the ultimate goal of tissue engineers. One of the grand challenges in this field is to closely mimic the structures and properties of native tissues. Regenerative engineering-the convergence of tissue engineering with advanced materials science, stem cell science, and developmental biology-represents the next valuable tool to overcome the challenges. This article reviews the recent progress in developing advanced chitosan structures using various fabrication techniques. These chitosan structures, together with stem cells and functional biomolecules, may provide a robust platform to gain insight into cell-biomaterial interactions and may function as excellent artificial extracellular matrices to regenerate complex human tissues and biological systems.
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48
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Maeda N, Miao J, Simmons TJ, Dordick JS, Linhardt RJ. Composite polysaccharide fibers prepared by electrospinning and coating. Carbohydr Polym 2014; 102:950-5. [PMID: 24507368 PMCID: PMC3920191 DOI: 10.1016/j.carbpol.2013.10.038] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2013] [Revised: 09/24/2013] [Accepted: 10/12/2013] [Indexed: 11/16/2022]
Abstract
Composite polysaccharide fibers composed two oppositely charged natural polysaccharides, chitosan and hyaluronic acid, were prepared by electrospinning and subsequent coating. The fiber size distribution was characterized by scanning electron microscopy. Chitosan/hyaluronic acid composite fibers were stable in water but showed controlled release of hyaluronic acid into phosphate buffered saline, and the presence of 3-wt% hyaluronic acid coating improved the swelling ratio to 30%. The resulting composite polysaccharide fibers have a number of potential biomedical applications in wound healing applications and in drug delivery systems.
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Affiliation(s)
- N Maeda
- Rensselaer Nanotechnology Center, Rensselaer Polytechnic Institute, Troy, NY 12180, USA; Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, NY 12180, USA
| | - J Miao
- Rensselaer Nanotechnology Center, Rensselaer Polytechnic Institute, Troy, NY 12180, USA; Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, NY 12180, USA; Chemical and Biological Engineering, Rensselaer Polytechnic Institute, Troy, NY 12180, USA
| | - T J Simmons
- Rensselaer Nanotechnology Center, Rensselaer Polytechnic Institute, Troy, NY 12180, USA; Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, NY 12180, USA; Center for Future Energy Systems, Rensselaer Polytechnic Institute, Troy, NY 12180, USA
| | - J S Dordick
- Rensselaer Nanotechnology Center, Rensselaer Polytechnic Institute, Troy, NY 12180, USA; Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, NY 12180, USA; Chemical and Biological Engineering, Rensselaer Polytechnic Institute, Troy, NY 12180, USA
| | - R J Linhardt
- Rensselaer Nanotechnology Center, Rensselaer Polytechnic Institute, Troy, NY 12180, USA; Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, NY 12180, USA; Chemical and Biological Engineering, Rensselaer Polytechnic Institute, Troy, NY 12180, USA; Chemistry and Chemical Biology, Rensselaer Polytechnic Institute, Troy, NY 12180, USA.
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49
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Zhou Q, Bao M, Yuan H, Zhao S, Dong W, Zhang Y. Implication of stable jet length in electrospinning for collecting well-aligned ultrafine PLLA fibers. POLYMER 2013. [DOI: 10.1016/j.polymer.2013.10.042] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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50
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Janković B, Pelipenko J, Škarabot M, Muševič I, Kristl J. The design trend in tissue-engineering scaffolds based on nanomechanical properties of individual electrospun nanofibers. Int J Pharm 2013; 455:338-47. [DOI: 10.1016/j.ijpharm.2013.06.083] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2013] [Revised: 06/26/2013] [Accepted: 06/30/2013] [Indexed: 11/30/2022]
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