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Teba HE, Khalil IA, Gebreel RM, Fahmy LI, Sorogy HME. Development of antifungal fibrous ocular insert using freeze-drying technique. Drug Deliv Transl Res 2024; 14:2520-2538. [PMID: 38366116 PMCID: PMC11291584 DOI: 10.1007/s13346-024-01527-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/22/2024] [Indexed: 02/18/2024]
Abstract
Candida species is one of the pathogenic fungi of the eye responsible for keratitis that frequently causes vision impairment and blindness. Effective treatment requires long-term use of antifungal drugs, which is opposed by the defensive mechanisms of the eye and inadequate corneal penetration. The objective of this study was to develop a carrier for prolonged ocular application of fluconazole (FLZ) to treat keratitis. FLZ was encapsulated into chitosan fibrous matrices (F1-F4) using different chitosan concentrations (0.02, 0.1, 0.5, and 1%w/v, respectively) by freeze-drying as a single-step technique. Studying the morphology and surface properties of the inserts revealed a porous matrix with fibrous features with a large surface area. Thermal stability and chemical compatibility were confirmed by DSC/TGA/DTA and FT-IR, respectively. Loading capacity (LC) and entrapment efficiency (EE) were determined. According to the in vitro release study, F4 (0.11 mg mg-1 LC and 87.53% EE) was selected as the optimum insert because it had the most sustained release, with 15.85% burst release followed by 75.62% release within 12 h. Ex vivo corneal permeation study revealed a 1.2-fold increase in FLZ permeation from F4 compared to FLZ aqueous solution. Also, in the in vivo pharmacokinetic study in rabbits, F4 increased the AUC0-8 of FLZ by 9.3-fold and its concentration in aqueous humor was maintained above the MIC through the experimentation time. Studies on cytotoxicity (MTT assay) provide evidence for the safety and biocompatibility of F4. Therefore, the freeze-dried FLZ-loaded chitosan fibrous insert could be a promising candidate for treating ocular keratitis.
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Affiliation(s)
- Hoda E Teba
- Department of Pharmaceutics, Faculty of Pharmacy and Drug Manufacturing, Misr University for Science and Technology, 12566, 6th of October, Giza, Egypt
| | - Islam A Khalil
- Department of Pharmaceutics, Faculty of Pharmacy and Drug Manufacturing, Misr University for Science and Technology, 12566, 6th of October, Giza, Egypt
| | - Rana M Gebreel
- Department of Pharmaceutics, Faculty of Pharmacy and Drug Manufacturing, Misr University for Science and Technology, 12566, 6th of October, Giza, Egypt
| | - Lamiaa I Fahmy
- Department of Microbiology and Immunology, Faculty of Pharmacy, October University for Modern Sciences and Arts, 12451, 6th of October, Giza, Egypt
| | - Heba M El Sorogy
- Department of Pharmaceutics, Faculty of Pharmacy and Drug Manufacturing, Misr University for Science and Technology, 12566, 6th of October, Giza, Egypt.
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2
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Xu R, Fang Y, Zhang Z, Cao Y, Yan Y, Gan L, Xu J, Zhou G. Recent Advances in Biodegradable and Biocompatible Synthetic Polymers Used in Skin Wound Healing. MATERIALS (BASEL, SWITZERLAND) 2023; 16:5459. [PMID: 37570163 PMCID: PMC10419642 DOI: 10.3390/ma16155459] [Citation(s) in RCA: 20] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/21/2023] [Revised: 07/29/2023] [Accepted: 08/02/2023] [Indexed: 08/13/2023]
Abstract
The treatment of skin wounds caused by trauma and pathophysiological disorders has been a growing healthcare challenge, posing a great economic burden worldwide. The use of appropriate wound dressings can help to facilitate the repair and healing rate of defective skin. Natural polymer biomaterials such as collagen and hyaluronic acid with excellent biocompatibility have been shown to promote wound healing and the restoration of skin. However, the low mechanical properties and fast degradation rate have limited their applications. Skin wound dressings based on biodegradable and biocompatible synthetic polymers can not only overcome the shortcomings of natural polymer biomaterials but also possess favorable properties for applications in the treatment of skin wounds. Herein, we listed several biodegradable and biocompatible synthetic polymers used as wound dressing materials, such as PVA, PCL, PLA, PLGA, PU, and PEO/PEG, focusing on their composition, fabrication techniques, and functions promoting wound healing. Additionally, the future development prospects of synthetic biodegradable polymer-based wound dressings are put forward. Our review aims to provide new insights for the further development of wound dressings using synthetic biodegradable polymers.
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Affiliation(s)
- Ruojiao Xu
- College of Life Science, Zhejiang Chinese Medical University, Hangzhou 310053, China; (R.X.); (Y.F.); (Z.Z.); (Y.C.); (Y.Y.); (L.G.)
| | - Yifeng Fang
- College of Life Science, Zhejiang Chinese Medical University, Hangzhou 310053, China; (R.X.); (Y.F.); (Z.Z.); (Y.C.); (Y.Y.); (L.G.)
| | - Zhao Zhang
- College of Life Science, Zhejiang Chinese Medical University, Hangzhou 310053, China; (R.X.); (Y.F.); (Z.Z.); (Y.C.); (Y.Y.); (L.G.)
| | - Yajie Cao
- College of Life Science, Zhejiang Chinese Medical University, Hangzhou 310053, China; (R.X.); (Y.F.); (Z.Z.); (Y.C.); (Y.Y.); (L.G.)
| | - Yujia Yan
- College of Life Science, Zhejiang Chinese Medical University, Hangzhou 310053, China; (R.X.); (Y.F.); (Z.Z.); (Y.C.); (Y.Y.); (L.G.)
| | - Li Gan
- College of Life Science, Zhejiang Chinese Medical University, Hangzhou 310053, China; (R.X.); (Y.F.); (Z.Z.); (Y.C.); (Y.Y.); (L.G.)
| | - Jinbao Xu
- School of Materials and Energy, Guangdong University of Technology, Guangzhou 510030, China
| | - Guoying Zhou
- College of Life Science, Zhejiang Chinese Medical University, Hangzhou 310053, China; (R.X.); (Y.F.); (Z.Z.); (Y.C.); (Y.Y.); (L.G.)
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Shahzadi I, Wu Y, Lin H, Huang J, Zhao Z, Chen C, Shi X, Deng H. Yeast biomass ornamented macro-hierarchical chitin nanofiber aerogel for enhanced adsorption of cadmium(II) ions. JOURNAL OF HAZARDOUS MATERIALS 2023; 453:131312. [PMID: 37054646 DOI: 10.1016/j.jhazmat.2023.131312] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/01/2023] [Revised: 03/14/2023] [Accepted: 03/26/2023] [Indexed: 05/03/2023]
Abstract
There is an urgent need to develop sustainable, renewable, and environment-friendly adsorbents to rectify heavy metals from water. In the current study, a green hybrid aerogel was prepared by immobilizing yeast on chitin nanofibers in the presence of a chitosan interacting substrate. A cryo-freezing technique was employed to construct a 3D honeycomb architecture comprising the hybrid aerogel with excellent reversible compressibility and abundant water transportation pathways for the accelerated diffusion of Cadmium(II) (Cd(II)) solution. This 3D hybrid aerogel structure offered copious binding sites to accelerate the Cd(II) adsorption. Moreover, the addition of yeast biomass amplified the adsorption capacity and reversible wet compression of hybrid aerogel. The monolayer chemisorption mechanism explored by Langmuir and pseudo-second-order kinetic exhibited a maximum adsorption capacity of 127.5 mg/g. The hybrid aerogel demonstrated higher compatibility for Cd(II) ions as compared to the other coexisted ions in wastewater and manifested a better regeneration potential following four consecutive sorption-desorption cycles. Complexation, electrostatic attraction, ion-exchange and pore entrapment were perhaps major mechanisms involved in the removal of Cd(II) revealed by XPS and FT-IR. This study unveiled a novel avenue for efficient green-synthesized hybrid aerogel that may be sustainably used as an excellent purifying agent for Cd(II) removal from wastewater.
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Affiliation(s)
- Iqra Shahzadi
- Hubei Key Lab of Biomass Resource Chemistry and Environmental Biotechnology, School of Resource and Environmental Science, Wuhan University, Wuhan 430079, China
| | - Yang Wu
- Hubei Key Lab of Biomass Resource Chemistry and Environmental Biotechnology, School of Resource and Environmental Science, Wuhan University, Wuhan 430079, China.
| | - Heng Lin
- Hubei Key Lab of Biomass Resource Chemistry and Environmental Biotechnology, School of Resource and Environmental Science, Wuhan University, Wuhan 430079, China
| | - Jing Huang
- Hubei Key Lab of Biomass Resource Chemistry and Environmental Biotechnology, School of Resource and Environmental Science, Wuhan University, Wuhan 430079, China
| | - Ze Zhao
- Hubei Key Lab of Biomass Resource Chemistry and Environmental Biotechnology, School of Resource and Environmental Science, Wuhan University, Wuhan 430079, China
| | - Chaoji Chen
- Hubei Key Lab of Biomass Resource Chemistry and Environmental Biotechnology, School of Resource and Environmental Science, Wuhan University, Wuhan 430079, China
| | - Xiaowen Shi
- Hubei Key Lab of Biomass Resource Chemistry and Environmental Biotechnology, School of Resource and Environmental Science, Wuhan University, Wuhan 430079, China
| | - Hongbing Deng
- Hubei Key Lab of Biomass Resource Chemistry and Environmental Biotechnology, School of Resource and Environmental Science, Wuhan University, Wuhan 430079, China.
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4
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Kong Z, Wang X. Bioprinting Technologies and Bioinks for Vascular Model Establishment. Int J Mol Sci 2023; 24:ijms24010891. [PMID: 36614332 PMCID: PMC9821327 DOI: 10.3390/ijms24010891] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2022] [Revised: 12/12/2022] [Accepted: 12/29/2022] [Indexed: 01/06/2023] Open
Abstract
Clinically, large diameter artery defects (diameter larger than 6 mm) can be substituted by unbiodegradable polymers, such as polytetrafluoroethylene. There are many problems in the construction of small diameter blood vessels (diameter between 1 and 3 mm) and microvessels (diameter less than 1 mm), especially in the establishment of complex vascular models with multi-scale branched networks. Throughout history, the vascularization strategies have been divided into three major groups, including self-generated capillaries from implantation, pre-constructed vascular channels, and three-dimensional (3D) printed cell-laden hydrogels. The first group is based on the spontaneous angiogenesis behaviour of cells in the host tissues, which also lays the foundation of capillary angiogenesis in tissue engineering scaffolds. The second group is to vascularize the polymeric vessels (or scaffolds) with endothelial cells. It is hoped that the pre-constructed vessels can be connected with the vascular networks of host tissues with rapid blood perfusion. With the development of bioprinting technologies, various fabrication methods have been achieved to build hierarchical vascular networks with high-precision 3D control. In this review, the latest advances in 3D bioprinting of vascularized tissues/organs are discussed, including new printing techniques and researches on bioinks for promoting angiogenesis, especially coaxial printing, freeform reversible embedded in suspended hydrogel printing, and acoustic assisted printing technologies, and freeform reversible embedded in suspended hydrogel (flash) technology.
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Affiliation(s)
- Zhiyuan Kong
- Center of 3D Printing & Organ Manufacturing, School of Intelligent Medicine, China Medical University (CMU), No. 77 Puhe Road, Shenyang North New Area, Shenyang 110122, China
| | - Xiaohong Wang
- Center of 3D Printing & Organ Manufacturing, School of Intelligent Medicine, China Medical University (CMU), No. 77 Puhe Road, Shenyang North New Area, Shenyang 110122, China
- Key Laboratory for Advanced Materials Processing Technology, Ministry of Education & Center of Organ Manufacturing, Department of Mechanical Engineering, Tsinghua University, Beijing 100084, China
- Correspondence: ; Tel.: +86-24-3190-0983
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5
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Hu Y, Ni R, Lu Q, Qiu X, Ma J, Wang Y, Zhao Y. Functionalized multi-effect air filters with bimodal fibrous structure prepared by direction growth of keratin nanofibers. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.122070] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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6
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Bai L, Liu L, Esquivel M, Tardy BL, Huan S, Niu X, Liu S, Yang G, Fan Y, Rojas OJ. Nanochitin: Chemistry, Structure, Assembly, and Applications. Chem Rev 2022; 122:11604-11674. [PMID: 35653785 PMCID: PMC9284562 DOI: 10.1021/acs.chemrev.2c00125] [Citation(s) in RCA: 70] [Impact Index Per Article: 35.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Chitin, a fascinating biopolymer found in living organisms, fulfills current demands of availability, sustainability, biocompatibility, biodegradability, functionality, and renewability. A feature of chitin is its ability to structure into hierarchical assemblies, spanning the nano- and macroscales, imparting toughness and resistance (chemical, biological, among others) to multicomponent materials as well as adding adaptability, tunability, and versatility. Retaining the inherent structural characteristics of chitin and its colloidal features in dispersed media has been central to its use, considering it as a building block for the construction of emerging materials. Top-down chitin designs have been reported and differentiate from the traditional molecular-level, bottom-up synthesis and assembly for material development. Such topics are the focus of this Review, which also covers the origins and biological characteristics of chitin and their influence on the morphological and physical-chemical properties. We discuss recent achievements in the isolation, deconstruction, and fractionation of chitin nanostructures of varying axial aspects (nanofibrils and nanorods) along with methods for their modification and assembly into functional materials. We highlight the role of nanochitin in its native architecture and as a component of materials subjected to multiscale interactions, leading to highly dynamic and functional structures. We introduce the most recent advances in the applications of nanochitin-derived materials and industrialization efforts, following green manufacturing principles. Finally, we offer a critical perspective about the adoption of nanochitin in the context of advanced, sustainable materials.
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Affiliation(s)
- Long Bai
- Key
Laboratory of Bio-based Material Science & Technology (Ministry
of Education), Northeast Forestry University, Harbin 150040, P.R. China
- Bioproducts
Institute, Department of Chemical & Biological Engineering, Department
of Chemistry, and Department of Wood Science, 2360 East Mall, The University of British Columbia, Vancouver, BC V6T 1Z3, Canada
| | - Liang Liu
- Jiangsu
Co-Innovation Center of Efficient Processing and Utilization of Forest
Resources, Jiangsu Key Lab of Biomass-Based Green Fuel and Chemicals,
College of Chemical Engineering, Nanjing
Forestry University, 159 Longpan Road, Nanjing 210037, P.R. China
| | - Marianelly Esquivel
- Polymer
Research Laboratory, Department of Chemistry, National University of Costa Rica, Heredia 3000, Costa Rica
| | - Blaise L. Tardy
- Department
of Bioproducts and Biosystems, School of Chemical Engineering, Aalto University, FI-00076 Aalto, Finland
- Department
of Chemical Engineering, Khalifa University, Abu Dhabi, United Arab Emirates
| | - Siqi Huan
- Key
Laboratory of Bio-based Material Science & Technology (Ministry
of Education), Northeast Forestry University, Harbin 150040, P.R. China
- Bioproducts
Institute, Department of Chemical & Biological Engineering, Department
of Chemistry, and Department of Wood Science, 2360 East Mall, The University of British Columbia, Vancouver, BC V6T 1Z3, Canada
| | - Xun Niu
- Bioproducts
Institute, Department of Chemical & Biological Engineering, Department
of Chemistry, and Department of Wood Science, 2360 East Mall, The University of British Columbia, Vancouver, BC V6T 1Z3, Canada
| | - Shouxin Liu
- Key
Laboratory of Bio-based Material Science & Technology (Ministry
of Education), Northeast Forestry University, Harbin 150040, P.R. China
| | - Guihua Yang
- State
Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology, Shandong Academy of
Sciences, Jinan 250353, China
| | - Yimin Fan
- Jiangsu
Co-Innovation Center of Efficient Processing and Utilization of Forest
Resources, Jiangsu Key Lab of Biomass-Based Green Fuel and Chemicals,
College of Chemical Engineering, Nanjing
Forestry University, 159 Longpan Road, Nanjing 210037, P.R. China
| | - Orlando J. Rojas
- Bioproducts
Institute, Department of Chemical & Biological Engineering, Department
of Chemistry, and Department of Wood Science, 2360 East Mall, The University of British Columbia, Vancouver, BC V6T 1Z3, Canada
- Department
of Bioproducts and Biosystems, School of Chemical Engineering, Aalto University, FI-00076 Aalto, Finland
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7
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In situ grown bacterial cellulose/MoS 2 composites for multi-contaminant wastewater treatment and bacteria inactivation. Carbohydr Polym 2022; 277:118853. [PMID: 34893262 DOI: 10.1016/j.carbpol.2021.118853] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2021] [Revised: 10/08/2021] [Accepted: 11/02/2021] [Indexed: 01/06/2023]
Abstract
For the purpose of developing multifunctional water purification materials capable of degrading organic pollutants while simultaneously inactivating microorganisms from contaminated wastewater streams, we report here a facile and eco-friendly method to immobilize molybdenum disulfide into bacterial cellulose via a one-step in-situ biosynthetic method. The resultant nanocomposite, termed BC/MoS2, was shown to possess a photocatalytic activity capable of generating •OH from H2O2, while also exhibiting photodynamic/photothermal mechanisms, the combination of which exhibits synergistic activity for the degradation of pollutants as well as for bacterial inactivation. In the presence of H2O2, the BC/MoS2 nanocomposite exhibited excellent antibacterial efficacy upwards of 99.9999% (6 log units) for the photoinactivation of both Gram-negative Escherichia coli and Gram-positive Staphylococcus aureus upon infrared (IR) lamp illumination (100 W, 760 nm ≤ λ ≤ 5000 nm, 15 cm vertical distance; 5 min). Mechanistic studies revealed synergistic pathogen inactivation resulting from the combination of photocatalytically generated •OH and hyperthermia induced by the photothermal conversion of the near-IR light. In addition, the BC/MoS2 nanocomposite also showed excellent photodegradation activity for common aqueous contaminants in the presence of H2O2, including malachite green (a textile dye), catechol violet (a phenol) and formaldehyde. Taken together, our findings demonstrate that sustainable materials such as BC/MoS2 have potential applications in wastewater treatment and microorganism disinfection.
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8
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Sang S, Cheng R, Cao Y, Yan Y, Shen Z, Zhao Y, Han Y. Biocompatible chitosan/polyethylene glycol/multi-walled carbon nanotube composite scaffolds for neural tissue engineering. J Zhejiang Univ Sci B 2022; 23:58-73. [PMID: 35029088 PMCID: PMC8758934 DOI: 10.1631/jzus.b2100155] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2021] [Accepted: 06/03/2021] [Indexed: 12/26/2022]
Abstract
Carbon nanotube (CNT) composite materials are very attractive for use in neural tissue engineering and biosensor coatings. CNT scaffolds are excellent mimics of extracellular matrix due to their hydrophilicity, viscosity, and biocompatibility. CNTs can also impart conductivity to other insulating materials, improve mechanical stability, guide neuronal cell behavior, and trigger axon regeneration. The performance of chitosan (CS)/polyethylene glycol (PEG) composite scaffolds could be optimized by introducing multi-walled CNTs (MWCNTs). CS/PEG/CNT composite scaffolds with CNT content of 1%, 3%, and 5% (1%=0.01 g/mL) were prepared by freeze-drying. Their physical and chemical properties and biocompatibility were evaluated. Scanning electron microscopy (SEM) showed that the composite scaffolds had a highly connected porous structure. Transmission electron microscope (TEM) and Raman spectroscopy proved that the CNTs were well dispersed in the CS/PEG matrix and combined with the CS/PEG nanofiber bundles. MWCNTs enhanced the elastic modulus of the scaffold. The porosity of the scaffolds ranged from 83% to 96%. They reached a stable water swelling state within 24 h, and swelling decreased with increasing MWCNT concentration. The electrical conductivity and cell adhesion rate of the scaffolds increased with increasing MWCNT content. Immunofluorescence showed that rat pheochromocytoma (PC12) cells grown in the scaffolds had characteristics similar to nerve cells. We measured changes in the expression of nerve cell markers by quantitative real-time polymerase chain reaction (qRT-PCR), and found that PC12 cells cultured in the scaffolds expressed growth-associated protein 43 (GAP43), nerve growth factor receptor (NGFR), and class III β-tubulin (TUBB3) proteins. Preliminary research showed that the prepared CS/PEG/CNT scaffold has good biocompatibility and can be further applied to neural tissue engineering research.
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Affiliation(s)
- Shengbo Sang
- Shanxi Key Laboratory of Micro Nano Sensors & Artificial Intelligence Perception, College of Information and Computer, Taiyuan University of Technology, Taiyuan 030024, China.
- Key Lab of Advanced Transducers and Intelligent Control System of the Ministry of Education, Taiyuan University of Technology, Taiyuan 030024, China.
| | - Rong Cheng
- Shanxi Key Laboratory of Micro Nano Sensors & Artificial Intelligence Perception, College of Information and Computer, Taiyuan University of Technology, Taiyuan 030024, China
- Key Lab of Advanced Transducers and Intelligent Control System of the Ministry of Education, Taiyuan University of Technology, Taiyuan 030024, China
| | - Yanyan Cao
- Shanxi Key Laboratory of Micro Nano Sensors & Artificial Intelligence Perception, College of Information and Computer, Taiyuan University of Technology, Taiyuan 030024, China
- Key Lab of Advanced Transducers and Intelligent Control System of the Ministry of Education, Taiyuan University of Technology, Taiyuan 030024, China
- College of Information Science and Engineering, Hebei North University, Zhangjiakou 075000, China
| | - Yayun Yan
- Shanxi Key Laboratory of Micro Nano Sensors & Artificial Intelligence Perception, College of Information and Computer, Taiyuan University of Technology, Taiyuan 030024, China
- Key Lab of Advanced Transducers and Intelligent Control System of the Ministry of Education, Taiyuan University of Technology, Taiyuan 030024, China
| | - Zhizhong Shen
- Shanxi Key Laboratory of Micro Nano Sensors & Artificial Intelligence Perception, College of Information and Computer, Taiyuan University of Technology, Taiyuan 030024, China
- Key Lab of Advanced Transducers and Intelligent Control System of the Ministry of Education, Taiyuan University of Technology, Taiyuan 030024, China
- Shanxi Six-Dimensional Artificial Intelligence Biomedical Research Institute, Taiyuan 030031, China
| | - Yajing Zhao
- Shanxi Key Laboratory of Micro Nano Sensors & Artificial Intelligence Perception, College of Information and Computer, Taiyuan University of Technology, Taiyuan 030024, China
- Key Lab of Advanced Transducers and Intelligent Control System of the Ministry of Education, Taiyuan University of Technology, Taiyuan 030024, China
| | - Yanqing Han
- Department of Neurology, Shanxi Provincial Cardiovascular Hospital, Taiyuan 030024, China
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9
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Shen H, Jiang C, Li W, Wei Q, Ghiladi RA, Wang Q. Synergistic Photodynamic and Photothermal Antibacterial Activity of In Situ Grown Bacterial Cellulose/MoS 2-Chitosan Nanocomposite Materials with Visible Light Illumination. ACS APPLIED MATERIALS & INTERFACES 2021; 13:31193-31205. [PMID: 34164984 DOI: 10.1021/acsami.1c08178] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Owing to the rise in prevalence of multidrug-resistant pathogens attributed to the overuse of antibiotics, infectious diseases caused by the transmission of microbes from contaminated surfaces to new hosts are an ever-increasing threat to public health. Thus, novel materials that can stem this crisis, while also functioning via multiple antimicrobial mechanisms so that pathogens are unable to develop resistance to them, are in urgent need. Toward this goal, in this work, we developed in situ grown bacterial cellulose/MoS2-chitosan nanocomposite materials (termed BC/MoS2-CS) that utilize synergistic membrane disruption and photodynamic and photothermal antibacterial activities to achieve more efficient bactericidal activity. The BC/MoS2-CS nanocomposite exhibited excellent antibacterial efficacy, achieving 99.998% (4.7 log units) and 99.988% (3.9 log units) photoinactivation of Gram-negative Escherichia coli and Gram-positive Staphylococcus aureus, respectively, under visible-light illumination (xenon lamp, 500 W, λ ≥ 420 nm, and 30 min). Mechanistic studies revealed that the use of cationic chitosan likely facilitated bacterial membrane disruption and/or permeability, with hyperthermia (photothermal) and reactive oxygen species (photodynamic) leading to synergistic pathogen inactivation upon visible-light illumination. No mammalian cell cytotoxicity was observed for the BC/MoS2-CS membrane, suggesting that such composite nanomaterials are attractive as functional materials for infection control applications.
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Affiliation(s)
- Huiying Shen
- Key Laboratory of Eco-textiles, Ministry of Education, Jiangnan University, Wuxi 214122, China
| | - Chenyu Jiang
- Department of Chemistry, North Carolina State University, Raleigh, North Carolina 27695, United States
| | - Wei Li
- Key Laboratory of Eco-textiles, Ministry of Education, Jiangnan University, Wuxi 214122, China
| | - Qufu Wei
- Key Laboratory of Eco-textiles, Ministry of Education, Jiangnan University, Wuxi 214122, China
| | - Reza A Ghiladi
- Department of Chemistry, North Carolina State University, Raleigh, North Carolina 27695, United States
| | - Qingqing Wang
- Key Laboratory of Eco-textiles, Ministry of Education, Jiangnan University, Wuxi 214122, China
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10
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Wang J, Chen Z, Naguib HE. Preparation of a novel double crosslinked chitin aerogel via etherification with high strength. Carbohydr Polym 2021; 265:118014. [PMID: 33966821 DOI: 10.1016/j.carbpol.2021.118014] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Revised: 03/25/2021] [Accepted: 03/27/2021] [Indexed: 11/30/2022]
Abstract
In this study, we introduced a novel double crosslinked chitin aerogel via etherification with EGDE for mechanical reinforcement. Samples with different EGDE: chitin weight ratios from 0 to 1.5:1 were fabricated through chitin dissolution in KOH/urea aqueous solution, ethanol neutralization and washing, and supercritical CO2 drying. Both the physical and chemical crosslinking maintained the high porosity and light weight of chitin aerogels. The morphology under SEM has shown the close-ended and denser fibrils alignment for EGDE crosslinked aerogels and the mesoporous and macroporous structure induced by emulsion effect from excessive EGDE. FTIR characterization was conducted for chemical structure analysis. Compressive testing showed an increase of 247 % compressive strength at 10 % strain and 243 % modulus could be achieved at 1.0 EGDE samples. TGA results revealed a delayed thermal degradation for the chemically crosslinked samples. This study demonstrates EGDE an effective chemical crosslinker for reinforced chitin aerogels.
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Affiliation(s)
- Jintian Wang
- Department of Mechanical and Industrial Engineering, University of Toronto, 5 King's College Street, Toronto, Ontario, Canada.
| | - Zhiqiang Chen
- Department of Mechanical and Industrial Engineering, University of Toronto, 5 King's College Street, Toronto, Ontario, Canada; State Key Lab for Strength and Vibration of Mechanical Structures, Department of Engineering Mechanics, Xi'an Jiaotong University, Xi'an, 710049, China.
| | - Hani E Naguib
- Department of Mechanical and Industrial Engineering, Department of Materials Science and Engineering, Institute of Biomaterials and Biomedical Engineering, University of Toronto, 5 King's College Street, Toronto, Ontario, Canada.
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11
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Zhao X, Wang X, Lou T. Preparation of fibrous chitosan/sodium alginate composite foams for the adsorption of cationic and anionic dyes. JOURNAL OF HAZARDOUS MATERIALS 2021; 403:124054. [PMID: 33265059 DOI: 10.1016/j.jhazmat.2020.124054] [Citation(s) in RCA: 87] [Impact Index Per Article: 29.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/28/2020] [Revised: 08/25/2020] [Accepted: 09/19/2020] [Indexed: 05/27/2023]
Abstract
Natural polysaccharide is attractive for preparing the environmentally friendly and highly efficient adsorbent. However, to obtain an efficient amphoteric absorbent for dealing with complex wastewater is still challenging. Herein, fibrous chitosan/sodium alginate composite foams were prepared by lyophilization with ternary acetic acid/water/tetrahydrofuran solvents, which had suitable morphology of interconnected pores and microscale fibers for dye adsorption. The amphoteric composite foams showed high adsorption capacities for both anionic Acid Black-172 (817.0 mg/g) and cationic Methylene Blue (1488.1 mg/g), which were far superior to those of the control samples prepared with traditional solvents of acetic acid/water. The adsorption kinetics and isotherm data showed that the adsorption followed the pseudo-second-order and Langmuir model. Further thermodynamics analysis revealed the adsorption was a spontaneous process. Meanwhile, the foams achieved effective adsorption capacity of AB-172 and MB dyes under a wide range of environmental pH, and maintained high adsorption efficiency even after four cycles. The adsorption mechanism is chemisorption, where the adsorption capacities for the anionic and cationic dyes were dependent on the mass ratio of chitosan to sodium alginate. As a novel amphoteric adsorbent, the fibrous chitosan/sodium alginate composite foam shows the potential to remove both cationic and anionic dyes from wastewaters.
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Affiliation(s)
- Xiaolin Zhao
- College of Chemistry and Chemical Engineering, Qingdao University, Qingdao 266071, PR China
| | - Xuejun Wang
- College of Chemistry and Chemical Engineering, Qingdao University, Qingdao 266071, PR China
| | - Tao Lou
- College of Chemistry and Chemical Engineering, Qingdao University, Qingdao 266071, PR China.
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12
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Abstract
The increasing size and affluence of the global population have led to a rising demand for high-protein foods such as dairy and meat. Because it will be impossible to supply sufficient protein to everyone solely with dairy and meat, we need to transition at least part of our diets toward protein foods that are more sustainable to produce. The best way to convince consumers to make this transition is to offer products that easily fit into their current habits and diets by mimicking the original foods. This review focuses on methods of creating an internal microstructure close to that of the animal-based originals. One can directly employ plant products, use intermediates such as cell factories, or grow cultured meat by using nutrients of plant origin. We discuss methods of creating high-quality alternatives to meat and dairy foods, describe their relative merits, and provide an outlook toward the future.
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Affiliation(s)
- Konstantina Kyriakopoulou
- Food Process Engineering Laboratory, Agrotechnology and Food Sciences Group, Wageningen University, 6700 AA Wageningen, The Netherlands;
| | - Julia K Keppler
- Food Process Engineering Laboratory, Agrotechnology and Food Sciences Group, Wageningen University, 6700 AA Wageningen, The Netherlands;
| | - Atze Jan van der Goot
- Food Process Engineering Laboratory, Agrotechnology and Food Sciences Group, Wageningen University, 6700 AA Wageningen, The Netherlands;
| | - Remko M Boom
- Food Process Engineering Laboratory, Agrotechnology and Food Sciences Group, Wageningen University, 6700 AA Wageningen, The Netherlands;
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13
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Sun G, Zhao Q, Liu S, Li B, Li Y. Complex of raw chitin nanofibers and zein colloid particles as stabilizer for producing stable pickering emulsions. Food Hydrocoll 2019. [DOI: 10.1016/j.foodhyd.2019.105178] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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14
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Protocol for Determining the Induction of Human Embryonic Stem Cells into Myogenic Lineage Using Electrospun Nanofibers. Methods Mol Biol 2019. [PMID: 31707645 DOI: 10.1007/7651_2019_255] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register]
Abstract
An efficient method for the development of myogenic differentiation using the stem cells can be beneficial in patients with severely compromised mobility, muscular damage, or degenerative diseases. The stem cells can prove to be excellent clinical source of myogenic progenitor cells due to their ability of self-proliferation, renewal, and differentiation into a specific phenotype. They represent an essential component of tissue engineering along with other factors (e.g., 3D scaffolds, ECM mimicking environment, and growth factors). In this chapter, we describe the experimental protocols for isolation of the embryonic stem cells, their proliferation on nanofiber scaffolds, and finally their differentiation into myogenic cells. Furthermore, this chapter elaborates experimental methods to assess the myogenic fate of embryonic stem cells on the nanofiber scaffolds.
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15
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Montroni D, Marzec B, Valle F, Nudelman F, Falini G. β-Chitin Nanofibril Self-Assembly in Aqueous Environments. Biomacromolecules 2019; 20:2421-2429. [DOI: 10.1021/acs.biomac.9b00481] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Devis Montroni
- Dipartimento di Chimica “G. Ciamician”, Alma Mater Studiorum—Università di Bologna, via F. Selmi 2, 40126 Bologna, Italy
| | - Bartosz Marzec
- EaStCHEM School of Chemistry, University of Edinburgh, David Brewster Road, EH9 3FJ Edinburgh, U.K
| | - Francesco Valle
- National Research Council (CNR), Institute for Nanostructured Materials (ISMN), Via P. Gobetti 101, 40129 Bologna, Italy
- Consorzio Interuniversitario per lo Sviluppo dei Sistemi a Grande Interfase (CSGI), ISMN-CNR, 40129 Bologna, Italy
| | - Fabio Nudelman
- EaStCHEM School of Chemistry, University of Edinburgh, David Brewster Road, EH9 3FJ Edinburgh, U.K
| | - Giuseppe Falini
- Dipartimento di Chimica “G. Ciamician”, Alma Mater Studiorum—Università di Bologna, via F. Selmi 2, 40126 Bologna, Italy
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16
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de Farias BS, Sant'Anna Cadaval Junior TR, de Almeida Pinto LA. Chitosan-functionalized nanofibers: A comprehensive review on challenges and prospects for food applications. Int J Biol Macromol 2019; 123:210-220. [DOI: 10.1016/j.ijbiomac.2018.11.042] [Citation(s) in RCA: 46] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2018] [Revised: 11/05/2018] [Accepted: 11/08/2018] [Indexed: 12/22/2022]
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17
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Anwer MAS, Wang J, Guan A(Q, Naguib HE. Chitin nano-whiskers (CNWs) as a bio-based bio-degradable reinforcement for epoxy: evaluation of the impact of CNWs on the morphological, fracture, mechanical, dynamic mechanical, and thermal characteristics of DGEBA epoxy resin. RSC Adv 2019; 9:11063-11076. [PMID: 35520249 PMCID: PMC9063010 DOI: 10.1039/c9ra00769e] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2019] [Accepted: 03/31/2019] [Indexed: 11/21/2022] Open
Abstract
Chitin nano-whiskers (CNWs) reinforcement for producing optically transparent epoxy nanocomposites with enhanced fracture, mechanical and thermal characteristics.
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Affiliation(s)
- Muhammad A. S. Anwer
- Department of Mechanical and Industrial Engineering
- University of Toronto
- Toronto
- Canada
| | - Jintian Wang
- Department of Mechanical and Industrial Engineering
- University of Toronto
- Toronto
- Canada
| | | | - Hani E. Naguib
- Department of Mechanical and Industrial Engineering
- Department of Materials Science and Engineering
- Institute of Biomaterials and Biomedical Engineering
- University of Toronto
- Toronto
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18
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Rasouli R, Barhoum A, Bechelany M, Dufresne A. Nanofibers for Biomedical and Healthcare Applications. Macromol Biosci 2018; 19:e1800256. [DOI: 10.1002/mabi.201800256] [Citation(s) in RCA: 109] [Impact Index Per Article: 18.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2018] [Revised: 10/30/2018] [Indexed: 12/13/2022]
Affiliation(s)
- Rahimeh Rasouli
- Department of Medical NanotechnologyTehran University of Medical Sciences—International Campus 14177‐43373 Tehran Iran
| | - Ahmed Barhoum
- Faculty of ScienceChemistry DepartmentHelwan University 11795 Helwan Cairo Egypt
- Institut Européen des Membranes (IEM UMR 5635)ENSCMCNRSUniversity of Montpellier 34090 Montpellier France
| | - Mikhael Bechelany
- Institut Européen des Membranes (IEM UMR 5635)ENSCMCNRSUniversity of Montpellier 34090 Montpellier France
| | - Alain Dufresne
- LGP2, Grenoble INP, CNRSUniversité Grenoble Alpes F‐38000 Grenoble France
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19
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20
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Rahman SU, Nagrath M, Ponnusamy S, Arany PR. Nanoscale and Macroscale Scaffolds with Controlled-Release Polymeric Systems for Dental Craniomaxillofacial Tissue Engineering. MATERIALS (BASEL, SWITZERLAND) 2018; 11:E1478. [PMID: 30127246 PMCID: PMC6120038 DOI: 10.3390/ma11081478] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/12/2018] [Revised: 08/03/2018] [Accepted: 08/10/2018] [Indexed: 12/11/2022]
Abstract
Tremendous progress in stem cell biology has resulted in a major current focus on effective modalities to promote directed cellular behavior for clinical therapy. The fundamental principles of tissue engineering are aimed at providing soluble and insoluble biological cues to promote these directed biological responses. Better understanding of extracellular matrix functions is ensuring optimal adhesive substrates to promote cell mobility and a suitable physical niche to direct stem cell responses. Further, appreciation of the roles of matrix constituents as morphogen cues, termed matrikines or matricryptins, are also now being directly exploited in biomaterial design. These insoluble topological cues can be presented at both micro- and nanoscales with specific fabrication techniques. Progress in development and molecular biology has described key roles for a range of biological molecules, such as proteins, lipids, and nucleic acids, to serve as morphogens promoting directed behavior in stem cells. Controlled-release systems involving encapsulation of bioactive agents within polymeric carriers are enabling utilization of soluble cues. Using our efforts at dental craniofacial tissue engineering, this narrative review focuses on outlining specific biomaterial fabrication techniques, such as electrospinning, gas foaming, and 3D printing used in combination with polymeric nano- or microspheres. These avenues are providing unprecedented therapeutic opportunities for precision bioengineering for regenerative applications.
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Affiliation(s)
- Saeed Ur Rahman
- Departments of Oral Biology and Biomedical Engineering, School of Dentistry, University at Buffalo, Buffalo, NY 14214, USA.
- Interdisciplinary Research Centre in Biomedical Materials, COMSATS University Islamabad, Lahore Campus, Lahore 54000, Pakistan.
| | - Malvika Nagrath
- Departments of Oral Biology and Biomedical Engineering, School of Dentistry, University at Buffalo, Buffalo, NY 14214, USA.
- Department of Biomedical Engineering, Ryerson University, Toronto, ON M5B 2K3, Canada.
| | - Sasikumar Ponnusamy
- Departments of Oral Biology and Biomedical Engineering, School of Dentistry, University at Buffalo, Buffalo, NY 14214, USA.
| | - Praveen R Arany
- Departments of Oral Biology and Biomedical Engineering, School of Dentistry, University at Buffalo, Buffalo, NY 14214, USA.
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21
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22
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Fan L, Li JL, Cai Z, Wang X. Creating Biomimetic Anisotropic Architectures with Co-Aligned Nanofibers and Macrochannels by Manipulating Ice Crystallization. ACS NANO 2018; 12:5780-5790. [PMID: 29846058 DOI: 10.1021/acsnano.8b01648] [Citation(s) in RCA: 54] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
The continuous evolution of tissue engineering scaffolds has been driven by the desire to recapitulate structural features and functions of the natural extracellular matrix (ECM). However, it is still an extreme challenge to create a three-dimensional (3D) scaffold with both aligned nanofibers and aligned interconnected macrochannels to mimic the ECM of anisotropic tissues. Here, we develop a facile strategy to create such a scaffold composed of oriented nanofibers and interconnected macrochannels in the same direction, with various natural polymers typically used for tissue regeneration. The orientation of nanofibers and interconnected macrochannels can be easily tuned by manipulating ice crystallization. The scaffold demonstrates both structural and functional features similar to the natural ECM of anisotropic tissues. Taking silk fibroin as an example, the scaffold with radially oriented nanofibers and interconnected macrochannels is more efficient for capturing cells and promoting the growth of both nonadherent embryonic dorsal root ganglion neurons (DRGs) and adherent human umbilical vein endothelial cells (HUVECs) compared to the widely used scaffold types. Interestingly, DRGs and neurites on the SF scaffold demonstrate a 3D growth mode similar to that of natural nerve tissues. Furthermore, the coaligned nanofibers and macrochannels of the scaffold can direct HUVECs to assemble into blood vessel-like structures and their collagen deposition in their arrangement direction. The strategy could inspire the design and development of multifunctional 3D scaffolds with desirable structural features for engineering different tissues.
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Affiliation(s)
- Linpeng Fan
- Institute for Frontier Materials , Deakin University , Geelong , Victoria 3216 , Australia
| | - Jing-Liang Li
- Institute for Frontier Materials , Deakin University , Geelong , Victoria 3216 , Australia
| | - Zengxiao Cai
- Institute for Frontier Materials , Deakin University , Geelong , Victoria 3216 , Australia
| | - Xungai Wang
- Institute for Frontier Materials , Deakin University , Geelong , Victoria 3216 , Australia
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23
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Chen Y, Yang W, Wang W, Zhang M, Li M. Bombyx mori Silk Fibroin Scaffolds with Antheraea pernyi Silk Fibroin Micro/Nano Fibers for Promoting EA. hy926 Cell Proliferation. MATERIALS (BASEL, SWITZERLAND) 2017; 10:E1153. [PMID: 28972553 PMCID: PMC5666959 DOI: 10.3390/ma10101153] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/24/2017] [Revised: 09/25/2017] [Accepted: 09/30/2017] [Indexed: 10/31/2022]
Abstract
Achieving a high number of inter-pore channels and a nanofibrous structure similar to that of the extracellular matrix remains a challenge in the preparation of Bombyx mori silk fibroin (BSF) scaffolds for tissue engineering. In this study, Antheraea pernyi silk fibroin (ASF) micro/nano fibers with an average diameter of 324 nm were fabricated by electrospinning from an 8 wt % ASF solution in hexafluoroisopropanol. The electrospun fibers were cut into short fibers (~0.5 mm) and then dispersed in BSF solution. Next, BSF scaffolds with ASF micro/nano fibers were prepared by lyophilization. Scanning electron microscope images clearly showed connected channels between macropores after the addition of ASF micro/nano fibers; meanwhile, micro/nano fibers and micropores could be clearly observed on the pore walls. The results of in vitro cultures of human umbilical vein endothelial cells (EA. hy926) on BSF scaffolds showed that fibrous BSF scaffolds containing 150% ASF fibers significantly promoted cell proliferation during the initial stage.
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Affiliation(s)
- Yongchun Chen
- National Engineering Laboratory for Modern Silk, College of Textile and Clothing Engineering, Soochow University, No. 199 Ren'ai Road, Industrial Park, Suzhou 215123, Jiangsu, China.
| | - Weichao Yang
- National Engineering Laboratory for Modern Silk, College of Textile and Clothing Engineering, Soochow University, No. 199 Ren'ai Road, Industrial Park, Suzhou 215123, Jiangsu, China.
| | - Weiwei Wang
- National Engineering Laboratory for Modern Silk, College of Textile and Clothing Engineering, Soochow University, No. 199 Ren'ai Road, Industrial Park, Suzhou 215123, Jiangsu, China.
| | - Min Zhang
- National Engineering Laboratory for Modern Silk, College of Textile and Clothing Engineering, Soochow University, No. 199 Ren'ai Road, Industrial Park, Suzhou 215123, Jiangsu, China.
| | - Mingzhong Li
- National Engineering Laboratory for Modern Silk, College of Textile and Clothing Engineering, Soochow University, No. 199 Ren'ai Road, Industrial Park, Suzhou 215123, Jiangsu, China.
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24
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Sornkamnerd S, Okajima MK, Kaneko T. Tough and Porous Hydrogels Prepared by Simple Lyophilization of LC Gels. ACS OMEGA 2017; 2:5304-5314. [PMID: 31457799 PMCID: PMC6641907 DOI: 10.1021/acsomega.7b00602] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/22/2017] [Accepted: 07/21/2017] [Indexed: 05/30/2023]
Abstract
Porous hydrogels possessing mechanical toughness were prepared from sacran, a supergiant liquid crystalline (LC) polysaccharide produced from Aphanothece sacrum. First, layered hydrogels were prepared by thermal cross-linking of film cast over a sacran LC solution. Then, anisotropic pores were constructed using a freeze-drying technique on the water-swollen layered hydrogels. Scanning electron microscopic observation revealed that pores were observable only on the side faces of sponge materials parallel to the layered structure but never on the top or bottom faces. The pore size, porosity, and swelling behavior were controlled by the thermal-cross-linking temperature. To clarify the freezing effect, a freeze-thawing method was used for comparison. The freeze-thawed hydrogels also formed layers but no pores. The mechanical properties and network structures of hydrogels were also studied, clarifying that porous hydrogels, even those with a high quantity of pores, were tough owing to the pores orienting along the layer direction like tunnels.
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Affiliation(s)
- Saranyoo Sornkamnerd
- Energy and Environment Area,
School of Materials Science, Graduate School of Advanced Science and
Technology, Japan Advanced Institute of
Science and Technology (JAIST), 1-1 Asahidai, Nomi, Ishikawa 923-1292, Japan
| | - Maiko K. Okajima
- Energy and Environment Area,
School of Materials Science, Graduate School of Advanced Science and
Technology, Japan Advanced Institute of
Science and Technology (JAIST), 1-1 Asahidai, Nomi, Ishikawa 923-1292, Japan
| | - Tatsuo Kaneko
- Energy and Environment Area,
School of Materials Science, Graduate School of Advanced Science and
Technology, Japan Advanced Institute of
Science and Technology (JAIST), 1-1 Asahidai, Nomi, Ishikawa 923-1292, Japan
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25
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Biocompatible chitin/carbon nanotubes composite hydrogels as neuronal growth substrates. Carbohydr Polym 2017; 174:830-840. [PMID: 28821138 DOI: 10.1016/j.carbpol.2017.06.101] [Citation(s) in RCA: 81] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2017] [Revised: 05/28/2017] [Accepted: 06/26/2017] [Indexed: 12/20/2022]
Abstract
In the past decades, extensive studies have demonstrated that carbon nanotubes (CNTs) could promote cell adhesion, proliferation and differentiation of neuronal cells. However, the potential cytotoxicity in biological systems severely restricted the utilization of CNTs as substrates for neural growth. In this study, biocompatible chitin/carbon nanotubes (Ch/CNT) composite hydrogels were developed via blending modified CNTs with chitin solution in 11wt% NaOH/4wt% urea aqueous system, and subsequently regenerating in ethanol. As the CNTs were dispersed homogeneously in chitin matrix and combined with chitin nanofibers to form a compact and neat Ch/CNT nanofibrous network through intermolecular interactions, such as electrostatic interactions, hydrogen bonding and amphiphilic interaction, etc. The tensile strength and elongation at break of the Ch/CNT composite hydrogels were obviously enhanced, and the swelling ratio decreased. In addition, the Ch/CNT hydrogels exhibited good hemocompatibility, biodegradation in vitro and biocompatibility without cytotoxicity and neurotoxicity nature to neuronal and Schwann cells (PC12 cells and RSC96 cells). Especially, the Ch/CNT3 composite hydrogels exhibited significant enhancement of the neuronal cell adhesion, proliferation and neurite outgrowth of neuronal cells with a great increase in both the percentage and the length of neurites. Therefore, we provide a simple and efficient approach to construct the novel Ch/CNT hydrogels as neuronal growth substrates for the potential application in nerve regeneration.
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26
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Jiang S, Duan G, Kuhn U, Mörl M, Altstädt V, Yarin AL, Greiner A. Spongy Gels by a Top-Down Approach from Polymer Fibrous Sponges. Angew Chem Int Ed Engl 2017; 56:3285-3288. [PMID: 28194915 PMCID: PMC5363351 DOI: 10.1002/anie.201611787] [Citation(s) in RCA: 52] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2016] [Revised: 01/18/2017] [Indexed: 01/22/2023]
Abstract
Ultralight cellular sponges offer a unique set of properties. We show here that solvent uptake by these sponges results in new gel-like materials, which we term spongy gels. The appearance of the spongy gels is very similar to classic organogels. Usually, organogels are formed by a bottom-up process. In contrast, the spongy gels are formed by a top-down approach that offers numerous advantages for the design of their properties, reproducibility, and stability. The sponges themselves represent the scaffold of a gel that could be filled with a solvent, and thereby form a mechanically stable gel-like material. The spongy gels are independent of a time-consuming or otherwise demanding in situ scaffold formation. As solvent evaporation from gels is a concern for various applications, we also studied solvent evaporation of wetting and non-wetting liquids dispersed in the sponge.
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Affiliation(s)
- Shaohua Jiang
- Macromolecular ChemistryBavarian Polymer InstituteUniversity BayreuthUniversitätsstrasse 3095440BayreuthGermany
- College of Materials Science and EngineeringNanjing Forest UniversityNanjing210037China
| | - Gaigai Duan
- Macromolecular ChemistryBavarian Polymer InstituteUniversity BayreuthUniversitätsstrasse 3095440BayreuthGermany
| | - Ute Kuhn
- Polymer EngineeringUniversity BayreuthUniversitätsstrasse 3095440BayreuthGermany
| | - Michaela Mörl
- Polymer EngineeringUniversity BayreuthUniversitätsstrasse 3095440BayreuthGermany
| | - Volker Altstädt
- Polymer EngineeringUniversity BayreuthUniversitätsstrasse 3095440BayreuthGermany
| | - Alexander L. Yarin
- Department of Mechanical and Industrial EngineeringUniversity of Illinois at Chicago842 W. Taylor StreetChicagoIL60607USA
| | - Andreas Greiner
- Macromolecular ChemistryBavarian Polymer InstituteUniversity BayreuthUniversitätsstrasse 3095440BayreuthGermany
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27
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Jiang S, Duan G, Kuhn U, Mörl M, Altstädt V, Yarin AL, Greiner A. Spongy Gels by a Top-Down Approach from Polymer Fibrous Sponges. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201611787] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Shaohua Jiang
- Macromolecular Chemistry; Bavarian Polymer Institute; University Bayreuth; Universitätsstrasse 30 95440 Bayreuth Germany
- College of Materials Science and Engineering; Nanjing Forest University; Nanjing 210037 China
| | - Gaigai Duan
- Macromolecular Chemistry; Bavarian Polymer Institute; University Bayreuth; Universitätsstrasse 30 95440 Bayreuth Germany
| | - Ute Kuhn
- Polymer Engineering; University Bayreuth; Universitätsstrasse 30 95440 Bayreuth Germany
| | - Michaela Mörl
- Polymer Engineering; University Bayreuth; Universitätsstrasse 30 95440 Bayreuth Germany
| | - Volker Altstädt
- Polymer Engineering; University Bayreuth; Universitätsstrasse 30 95440 Bayreuth Germany
| | - Alexander L. Yarin
- Department of Mechanical and Industrial Engineering; University of Illinois at Chicago; 842 W. Taylor Street Chicago IL 60607 USA
| | - Andreas Greiner
- Macromolecular Chemistry; Bavarian Polymer Institute; University Bayreuth; Universitätsstrasse 30 95440 Bayreuth Germany
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28
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Wu S, Duan B, Zeng X, Lu A, Xu X, Wang Y, Ye Q, Zhang L. Construction of blood compatible lysine-immobilized chitin/carbon nanotube microspheres and potential applications for blood purified therapy. J Mater Chem B 2017; 5:2952-2963. [DOI: 10.1039/c7tb00101k] [Citation(s) in RCA: 54] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Novel lysine-immobilized chitin/carbon nanotube microspheres are prepared with excellent bilirubin adsorption properties and good blood compatibility for blood purified therapy.
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Affiliation(s)
- Shuangquan Wu
- College of Chemistry & Molecule Sciences
- Wuhan University
- Wuhan 430072
- P. R. China
- Zhongnan Hospital of Wuhan University
| | - Bo Duan
- College of Chemistry & Molecule Sciences
- Wuhan University
- Wuhan 430072
- P. R. China
| | - Xianpeng Zeng
- Zhongnan Hospital of Wuhan University
- Institute of Hepatobiliary Diseases of Wuhan University
- Transplant Center of Wuhan University
- Hubei Key Laboratory of Medical Technology on Transplantation
- Wuhan 430071
| | - Ang Lu
- College of Chemistry & Molecule Sciences
- Wuhan University
- Wuhan 430072
- P. R. China
| | - Xiaojuan Xu
- College of Chemistry & Molecule Sciences
- Wuhan University
- Wuhan 430072
- P. R. China
| | - Yanfeng Wang
- Zhongnan Hospital of Wuhan University
- Institute of Hepatobiliary Diseases of Wuhan University
- Transplant Center of Wuhan University
- Hubei Key Laboratory of Medical Technology on Transplantation
- Wuhan 430071
| | - Qifa Ye
- Zhongnan Hospital of Wuhan University
- Institute of Hepatobiliary Diseases of Wuhan University
- Transplant Center of Wuhan University
- Hubei Key Laboratory of Medical Technology on Transplantation
- Wuhan 430071
| | - Lina Zhang
- College of Chemistry & Molecule Sciences
- Wuhan University
- Wuhan 430072
- P. R. China
- School of Chemistry and Chemical Engineering
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29
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Khorasani AC, Shojaosadati SA. Pectin-non-starch nanofibers biocomposites as novel gastrointestinal-resistant prebiotics. Int J Biol Macromol 2017; 94:131-144. [DOI: 10.1016/j.ijbiomac.2016.10.011] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2016] [Revised: 10/04/2016] [Accepted: 10/05/2016] [Indexed: 11/16/2022]
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30
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Su F, Zhou H, Zhang Y, Wang G. Three-dimensional honeycomb-like structured zero-valent iron/chitosan composite foams for effective removal of inorganic arsenic in water. J Colloid Interface Sci 2016; 478:421-9. [PMID: 27362398 DOI: 10.1016/j.jcis.2016.06.035] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2016] [Revised: 06/13/2016] [Accepted: 06/13/2016] [Indexed: 10/21/2022]
Abstract
A facile freeze-drying method was presented to fabricate three dimensional (3D) honeycomb-like structured nanoscale zero-valent iron/chitosan composite foams (ICCFs) for effective removal of inorganic arsenic in water. It was found that freezing temperature has important influence on the formation of 3D network structure of ICCFs. The ICCFs obtained at freeze temperature of -80°C exhibits oriented porous structure with good mechanical property than that at -20°C, thus improved excellent removal capability of As(III) and As(V) up to 114.9mgg(-1) and 86.87mgg(-1), respectively. Further, the adsorption kinetics of ICCFs on As(III) and As(V) can be described by pseudo-second order model and their adsorption isotherms follow Langmuir adsorption model. The superior removal performance of ICCFs on As(III) and As(V) can be ascribed to its oriented porous structure with abundant adsorption active sites resulted from nZVI and O, N-containing functional groups in ICCFs. Importantly, it was found that the O, N-containing functional groups of chitosan in ICCFs can adequately bind with the dissolved Fe(3+) ions from oxidation of nZVI to form Fe(3+)-Chitosan complex during removal of As(III) and As(V), thus effectively avoiding the dissolved Fe(3+) ions into solution to produce secondary pollution. A possible adsorption-coupled reduction mechanism of ICCFs on As(III) and As(V) was also proposed based on the experimental results. We believe that this work would be helpful to develop low-cost and abundant chitosan-based materials as high performance adsorbents for environmental remediation applications.
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Affiliation(s)
- Fengchao Su
- School of Physics and Materials Science, Anhui University, Hefei 230601, PR China; Key Laboratory of Materials Physics, Centre for Environmental and Energy Nanomaterials, Anhui Key Laboratory of Nanomaterials and Nanotechnology, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei 230031, PR China
| | - Hongjian Zhou
- Key Laboratory of Materials Physics, Centre for Environmental and Energy Nanomaterials, Anhui Key Laboratory of Nanomaterials and Nanotechnology, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei 230031, PR China.
| | - Yunxia Zhang
- Key Laboratory of Materials Physics, Centre for Environmental and Energy Nanomaterials, Anhui Key Laboratory of Nanomaterials and Nanotechnology, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei 230031, PR China
| | - Guozhong Wang
- School of Physics and Materials Science, Anhui University, Hefei 230601, PR China; Key Laboratory of Materials Physics, Centre for Environmental and Energy Nanomaterials, Anhui Key Laboratory of Nanomaterials and Nanotechnology, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei 230031, PR China.
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31
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Li X, You R, Luo Z, Chen G, Li M. Silk fibroin scaffolds with a micro-/nano-fibrous architecture for dermal regeneration. J Mater Chem B 2016; 4:2903-2912. [PMID: 32262968 DOI: 10.1039/c6tb00213g] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Silk fibroin (SF) scaffolds have been widely used in tissue engineering. However, a critical challenge for 3D SF scaffolds remains in providing a more appropriate microenvironment with a nanofibrous network to enhance cell viability and guide cell migration, thus further promoting tissue regeneration. In this study, a novel SF scaffold containing micro-/nano-fibers was prepared by a facile two-step freeze-drying technology. Carbodiimide-activated SF solution was diluted to 0.2 wt%, and then poured into pre-fabricated porous SF scaffolds. Consequently, well-dispersed fibrous networks with a fiber size of 511 ± 217 nm were produced within the pores of SF scaffolds after liquid nitrogen immersion, followed by lyophilization. The results of in vitro culture of dermal fibroblast cells and umbilical vein endothelial cells on fibrous SF scaffolds demonstrated that the introduction of the micro-/nano-fibers significantly enhanced cell attachment, proliferation and migration by providing 3D topographic cues. In vivo, the SF scaffolds were implanted into dorsal full-thickness wounds of Sprague-Dawley rats as dermal equivalents to evaluate the effect of the fibrous microstructure on dermal tissue reconstruction. The results demonstrated that the fibrous SF scaffolds promoted tissue neogenesis and collagen matrix formation by providing a fibrous ECM-like topography. This new fibrous SF scaffold offers potential for dermal tissue regeneration.
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Affiliation(s)
- Xiufang Li
- National Engineering Laboratory for Modern Silk, College of Textile and Clothing Engineering, Soochow University, Suzhou 215123, China.
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Single-crystal Au microflakes modulated by amino acids and their sensing and catalytic properties. J Colloid Interface Sci 2016; 467:115-120. [DOI: 10.1016/j.jcis.2016.01.004] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2015] [Revised: 01/01/2016] [Accepted: 01/04/2016] [Indexed: 11/22/2022]
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Ma Z, Liu D, Zhu Y, Li Z, Li Z, Tian H, Liu H. Graphene oxide/chitin nanofibril composite foams as column adsorbents for aqueous pollutants. Carbohydr Polym 2016; 144:230-7. [PMID: 27083813 DOI: 10.1016/j.carbpol.2016.02.057] [Citation(s) in RCA: 49] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2015] [Revised: 01/30/2016] [Accepted: 02/20/2016] [Indexed: 10/22/2022]
Abstract
A novel graphene oxide/chitin nanofibrils (GO-CNF) composite foam as a column adsorbent was prepared for aqueous contaminant disposal. The structures, morphologies and properties of composite foams supported by nanofibrils were characterized. As a special case, the adsorption of methylene blue (MB) on GO-CNF was investigated regarding the static adsorption and column adsorption-desorption tests. Results from equilibrium adsorption isotherms indicated that the adsorption behavior was well-fitted to Langmuir model. The composite foams reinforced by CNF were dimensionally stable during the column adsorption process and could be reused after elution. The removal efficiency of MB was still nearly 90% after 3 cycles. Furthermore, other inorganic or organic pollutants adsorbed by composite foams were also explored. Therefore, this novel composite foam with remarkable properties such as dimensional stability, universal adsorbent for cationic pollutants, high adsorption capacity, and ease of regeneration was a desirable adsorbent in the future practical application of water pollutant treatment.
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Affiliation(s)
- Zhongshi Ma
- Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, Nanjing University of Information Science and Technology, Nanjing 210044, China
| | - Dagang Liu
- Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, Nanjing University of Information Science and Technology, Nanjing 210044, China.
| | - Yi Zhu
- Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, Nanjing University of Information Science and Technology, Nanjing 210044, China
| | - Zehui Li
- Key Laboratory of Green Process and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China
| | - Zhenxuan Li
- Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, Nanjing University of Information Science and Technology, Nanjing 210044, China
| | - Huafeng Tian
- Department of Materials Science and Engineering, Beijing Technology and Business University, Beijing 100048, China
| | - Haiqing Liu
- Fujian Provincial Key Laboratory of Polymer Materials, College of Material Science and Engineering, Fujian Normal University, Fujian 350007, China
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Hettiarachchi CA, Melton LD, McGillivray DJ, Loveday SM, Gerrard JA, Williams MAK. β-Lactoglobulin nanofibrils can be assembled into nanotapes via site-specific interactions with pectin. SOFT MATTER 2016; 12:756-768. [PMID: 26517088 DOI: 10.1039/c5sm01530h] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Controlling the self-assembly of individual supramolecular entities, such as amyloid fibrils, into hierarchical architectures enables the 'bottom-up' fabrication of useful bionanomaterials. Here, we present the hierarchical assembly of β-lactoglobulin nanofibrils into the form of 'nanotapes' in the presence of a specific pectin with a high degree of methylesterification. The nanotapes produced were highly ordered, and had an average width of 180 nm at pH 3. Increasing the ionic strength or the pH of the medium led to the disassembly of nanotapes, indicating that electrostatic interactions stabilised the nanotape architecture. Small-angle X-ray scattering experiments conducted on the nanotapes showed that adequate space is available between adjacent nanofibrils to accommodate pectin molecules. To locate the interaction sites on the pectin molecule, it was subjected to endopolygalacturonase digestion, and the resulting products were analysed using capillary electrophoresis and size-exclusion chromatography for their charge and molecular weight, respectively. Results suggested that the functional pectin molecules carry short (<10 residues) enzyme-susceptible blocks of negatively charged, non-methylesterified galacturonic acid residues in the middle of their homogalacturonan backbones (and possibly near their ends), that specifically bind to sites on the nanofibrils. Blocking the interaction sites on the nanofibril surface using small oligomers of non-methylesterified galacturonic acid residues similar in size to the interaction sites of the pectin molecule decreased the nanotape formation, indicating that site-specific electrostatic interactions are vital for the cross-linking of nanofibrils. We propose a structural model for the pectin-cross-linked β-lactoglobulin nanotapes, the elements of which will inform the future design of bionanomaterials.
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Singh BK, Dutta PK. Chitin, Chitosan, and Silk Fibroin Electrospun Nanofibrous Scaffolds: A Prospective Approach for Regenerative Medicine. SPRINGER SERIES ON POLYMER AND COMPOSITE MATERIALS 2016. [DOI: 10.1007/978-81-322-2511-9_7] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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Preparation of Nanofibers with Renewable Polymers and Their Application in Wound Dressing. INT J POLYM SCI 2016. [DOI: 10.1155/2016/4672839] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Renewable polymers have attracted considerable attentions in the last two decades, predominantly due to their environmentally friendly properties, renewability, good biocompatibility, biodegradability, bioactivity, and modifiability. The nanofibers prepared from the renewable polymers can combine the excellent properties of the renewable polymer and nanofiber, such as high specific surface area, high porosity, excellent performances in cell adhesion, migration, proliferation, differentiation, and the analogous physical properties of extracellular matrix. They have been widely used in the fields of wound dressing to promote the wound healing, hemostasis, skin regeneration, and treatment of diabetic ulcers. In the present review, the different methods to prepare the nanofibers from the renewable polymers were introduced. Then the recent progress on preparation and properties of the nanofibers from different renewable polymers or their composites were reviewed; the application of them in the fields of wound dressing was emphasized.
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Duan B, Zheng X, Xia Z, Fan X, Guo L, Liu J, Wang Y, Ye Q, Zhang L. Highly biocompatible nanofibrous microspheres self-assembled from chitin in NaOH/urea aqueous solution as cell carriers. Angew Chem Int Ed Engl 2015; 54:5152-6. [PMID: 25712796 DOI: 10.1002/anie.201412129] [Citation(s) in RCA: 148] [Impact Index Per Article: 16.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2014] [Revised: 01/22/2015] [Indexed: 12/29/2022]
Abstract
In this work, chitin microspheres (NCM) having a nanofibrous architecture were constructed using a "bottom-up" fabrication pathway. The chitin chains rapidly self-assembled into nanofibers in NaOH/urea aqueous solution by a thermally induced method and subsequently formed weaved microspheres. The diameter of the chitin nanofibers and the size of the NCM were tunable by controlling the temperature and the processing parameters to be in the range from 26 to 55 nm and 3 to 130 μm, respectively. As a result of the nanofibrous surface and the inherent biocompatibility of chitin, cells could adhere to the chitin microspheres and showed a high attachment efficiency, indicating the great potential of the NCM for 3D cell microcarriers.
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Affiliation(s)
- Bo Duan
- College of Chemistry & Molecule Science, Wuhan University, Wuhan, 430072 (China)
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Duan B, Zheng X, Xia Z, Fan X, Guo L, Liu J, Wang Y, Ye Q, Zhang L. Highly Biocompatible Nanofibrous Microspheres Self-Assembled from Chitin in NaOH/Urea Aqueous Solution as Cell Carriers. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201412129] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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40
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Lei Y, Guan JJ, Chen W, Ke QF, Zhang CQ, Guo YP. Fabrication of hydroxyapatite/chitosan porous materials for Pb(ii) removal from aqueous solution. RSC Adv 2015. [DOI: 10.1039/c5ra01628b] [Citation(s) in RCA: 58] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
Hydroxyapatite/chitosan porous materials are fabricated by a freeze-drying method for Pb(ii) removal from aqueous solution.
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Affiliation(s)
- Yong Lei
- The Education Ministry Key Lab of Resource Chemistry and Shanghai Key Laboratory of Rare Earth Functional Materials
- Shanghai Normal University
- Shanghai 200234
- China
| | - Jun-Jie Guan
- The Education Ministry Key Lab of Resource Chemistry and Shanghai Key Laboratory of Rare Earth Functional Materials
- Shanghai Normal University
- Shanghai 200234
- China
- Department of Orthopedics Surgery
| | - Wei Chen
- The Education Ministry Key Lab of Resource Chemistry and Shanghai Key Laboratory of Rare Earth Functional Materials
- Shanghai Normal University
- Shanghai 200234
- China
| | - Qin-Fei Ke
- The Education Ministry Key Lab of Resource Chemistry and Shanghai Key Laboratory of Rare Earth Functional Materials
- Shanghai Normal University
- Shanghai 200234
- China
| | - Chang-Qing Zhang
- Department of Orthopedics Surgery
- Shanghai Sixth People's Hospital
- Shanghai Jiaotong University
- Shanghai 200233
- China
| | - Ya-Ping Guo
- The Education Ministry Key Lab of Resource Chemistry and Shanghai Key Laboratory of Rare Earth Functional Materials
- Shanghai Normal University
- Shanghai 200234
- China
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Wang X, Chen YC, Li B. Aligning 3D nanofibrous networks from self-assembled phenylalanine nanofibers. RSC Adv 2015; 5:8022-8027. [PMID: 25621167 PMCID: PMC4303580 DOI: 10.1039/c4ra13159b] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Self-assembled synthetic materials are typically disordered, and controlling the alignment of such materials at the nanometer scale may be important for a variety of biological applications. In this study, we have applied directional freeze-drying, for the first time, to develop well aligned three dimensional (3D) nanofibrous materials using amino acid like L-phenylalanine (Phe). 3D free-standing Phe nanofibrous monoliths have been successfully prepared using directional freeze-drying, and have presented a unique hierarchical structure with well-aligned nanofibers at the nanometer scale and an ordered compartmental architecture at the micrometer scale. We have found that the physical properties (e.g. nanofiber density and alignment) of the nanofibrous materials could be tuned by controlling the concentration and pH of the Phe solution and the freezing temperature. Moreover, the same strategy (i.e. directional freeze-drying) has been successfully applied to assemble peptide nanofibrous materials using a dipeptide (i.e. diphenylalanine), and to assemble Phe-based nanofibrous composites using polyethylenimine and poly(vinyl alcohol). The tunability of the nanofibrous structures together with the biocompatibility of Phe may make these 3D nanofibrous materials suitable for a variety of applications, including biosensor templates, tissue scaffolds, filtration membranes, and absorbents. The strategy reported here is likely applicable to create aligned nanofibrous structures using other amino acids, peptides, and polymers.
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Affiliation(s)
- Xianfeng Wang
- Department of Orthopaedics, School of Medicine, West Virginia University, Morgantown, WV 26506, United States
| | - Yi Charlie Chen
- Department of Biology, Natural Science Division, Alderson-Broaddus University, Philippi, WV 26416, United States
| | - Bingyun Li
- Department of Orthopaedics, School of Medicine, West Virginia University, Morgantown, WV 26506, United States
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Zhang X, Zhang Y, Ma G, Yang D, Nie J. The effect of the prefrozen process on properties of a chitosan/hydroxyapatite/poly(methyl methacrylate) composite prepared by freeze drying method used for bone tissue engineering. RSC Adv 2015. [DOI: 10.1039/c5ra14549j] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The process of different prefrozen methods to prepare a CS–HA/PMMA scaffold for bone tissue engineering.
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Affiliation(s)
- Xueqin Zhang
- State Key Laboratory of Chemical Resource Engineering
- Beijing Laboratory of Biomedical Materials
- Beijing University of Chemical Technology
- Beijing 100029
- PR China
| | - Yuxuan Zhang
- State Key Laboratory of Chemical Resource Engineering
- Beijing Laboratory of Biomedical Materials
- Beijing University of Chemical Technology
- Beijing 100029
- PR China
| | - Guiping Ma
- State Key Laboratory of Chemical Resource Engineering
- Beijing Laboratory of Biomedical Materials
- Beijing University of Chemical Technology
- Beijing 100029
- PR China
| | - Dongzhi Yang
- State Key Laboratory of Chemical Resource Engineering
- Beijing Laboratory of Biomedical Materials
- Beijing University of Chemical Technology
- Beijing 100029
- PR China
| | - Jun Nie
- State Key Laboratory of Chemical Resource Engineering
- Beijing Laboratory of Biomedical Materials
- Beijing University of Chemical Technology
- Beijing 100029
- PR China
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Wu J, Zhang K, Girouard N, Meredith JC. Facile Route to Produce Chitin Nanofibers as Precursors for Flexible and Transparent Gas Barrier Materials. Biomacromolecules 2014; 15:4614-20. [DOI: 10.1021/bm501416q] [Citation(s) in RCA: 54] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Jie Wu
- School of Materials Science and Engineering and ‡School of Chemical and Biomolecular
Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
| | - Kuang Zhang
- School of Materials Science and Engineering and ‡School of Chemical and Biomolecular
Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
| | - Natalie Girouard
- School of Materials Science and Engineering and ‡School of Chemical and Biomolecular
Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
| | - J. Carson Meredith
- School of Materials Science and Engineering and ‡School of Chemical and Biomolecular
Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
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Muzzarelli RAA, El Mehtedi M, Mattioli-Belmonte M. Emerging biomedical applications of nano-chitins and nano-chitosans obtained via advanced eco-friendly technologies from marine resources. Mar Drugs 2014; 12:5468-502. [PMID: 25415349 PMCID: PMC4245541 DOI: 10.3390/md12115468] [Citation(s) in RCA: 113] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2014] [Revised: 11/02/2014] [Accepted: 11/03/2014] [Indexed: 12/31/2022] Open
Abstract
The present review article is intended to direct attention to the technological advances made in the 2010-2014 quinquennium for the isolation and manufacture of nanofibrillar chitin and chitosan. Otherwise called nanocrystals or whiskers, n-chitin and n-chitosan are obtained either by mechanical chitin disassembly and fibrillation optionally assisted by sonication, or by e-spinning of solutions of polysaccharides often accompanied by poly(ethylene oxide) or poly(caprolactone). The biomedical areas where n-chitin may find applications include hemostasis and wound healing, regeneration of tissues such as joints and bones, cell culture, antimicrobial agents, and dermal protection. The biomedical applications of n-chitosan include epithelial tissue regeneration, bone and dental tissue regeneration, as well as protection against bacteria, fungi and viruses. It has been found that the nano size enhances the performances of chitins and chitosans in all cases considered, with no exceptions. Biotechnological approaches will boost the applications of the said safe, eco-friendly and benign nanomaterials not only in these fields, but also for biosensors and in targeted drug delivery areas.
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Affiliation(s)
- Riccardo A A Muzzarelli
- Faculty of Medicine, Department of Clinical & Molecular Sciences, Polytechnic University of Marche, IT-60100 Ancona, Italy.
| | - Mohamad El Mehtedi
- Faculty of Engineering, Department of Industrial Engineering & Mathematical Sciences, Polytechnic University of Marche, IT-60100 Ancona, Italy.
| | - Monica Mattioli-Belmonte
- Faculty of Medicine, Department of Clinical & Molecular Sciences, Polytechnic University of Marche, IT-60100 Ancona, Italy.
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Jiang C, Wang Z, Zhang X, Zhu X, Nie J, Ma G. Crosslinked polyelectrolyte complex fiber membrane based on chitosan–sodium alginate by freeze-drying. RSC Adv 2014. [DOI: 10.1039/c4ra04208e] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
Abstract
The formation mechanism polyelectrolyte complex nanofibers during the process of freeze drying.
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Affiliation(s)
- Chengling Jiang
- State Key Laboratory of Chemical Resource Engineering
- Beijing Laboratory of Biomedical Materials
- Beijing University of Chemical Technology
- Beijing 100029, PR China
| | - Zhiliang Wang
- State Key Laboratory of Chemical Resource Engineering
- Beijing Laboratory of Biomedical Materials
- Beijing University of Chemical Technology
- Beijing 100029, PR China
| | - Xueqin Zhang
- State Key Laboratory of Chemical Resource Engineering
- Beijing Laboratory of Biomedical Materials
- Beijing University of Chemical Technology
- Beijing 100029, PR China
| | - Xiaoqun Zhu
- State Key Laboratory of Chemical Resource Engineering
- Beijing Laboratory of Biomedical Materials
- Beijing University of Chemical Technology
- Beijing 100029, PR China
| | - Jun Nie
- State Key Laboratory of Chemical Resource Engineering
- Beijing Laboratory of Biomedical Materials
- Beijing University of Chemical Technology
- Beijing 100029, PR China
| | - Guiping Ma
- State Key Laboratory of Chemical Resource Engineering
- Beijing Laboratory of Biomedical Materials
- Beijing University of Chemical Technology
- Beijing 100029, PR China
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