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Hsieh CY, Hong PY, Hsieh LS. Immobilization of BoPAL3 Phenylalanine Ammonia-Lyase on Electrospun Nanofibrous Membranes of Polyvinyl Alcohol/Nylon 6/Chitosan Crosslinked with Dextran Polyaldehyde. Polymers (Basel) 2023; 15:3699. [PMID: 37765553 PMCID: PMC10535932 DOI: 10.3390/polym15183699] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2023] [Revised: 08/23/2023] [Accepted: 09/07/2023] [Indexed: 09/29/2023] Open
Abstract
Phenylalanine ammonia-lyase (PAL, EC 4.3.1.24) is common in plants and catalyzes the formation of trans-cinnamic acid and ammonia via phenylalanine deamination. Recombinant Bambusa oldhamii BoPAL3 protein expressed in Escherichia coli was immobilized on an electrospun nanofibrous membrane using dextran polyaldehyde as a crosslinker. The immobilized BoPAL3 protein exhibited comparable kinetic properties with the free BoPAL3 protein and could be recycled for six consecutive cycles compared with the free BoPAL3 protein. The residual activity of the immobilized BoPAL3 protein was 84% after 30 days of storage at 4 °C, whereas the free BoPAL3 protein retained 56% residual activity in the same storage conditions. Furthermore, the resistance of the immobilized BoPAL3 protein to chemical denaturants was greatly increased. Therefore, the BoPAL3 protein can be immobilized using the natural dextran polyaldehyde crosslinker in place of the conventional chemical crosslinker. Nanofibrous membranes made from polyvinyl alcohol (PVA), nylon 6, and chitosan (CS) are incredibly stable and useful for future industrial applications.
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Affiliation(s)
- Chun-Yen Hsieh
- Department of Pathology and Laboratory Medicine, Shin Kong Wu Ho-Su Memorial Hospital, Taipei City 111, Taiwan;
| | - Pei-Yu Hong
- Department of Food Science, College of Agriculture and Health, Tunghai University, Taichung 40704, Taiwan;
| | - Lu-Sheng Hsieh
- Department of Food Science, College of Agriculture and Health, Tunghai University, Taichung 40704, Taiwan;
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Gao L, He X, Zhang T, Li P, An R. Corrigendum: Preparation and characterization of polyethylene glycol/chitosan composite water-based wound healing lubricant. Front Bioeng Biotechnol 2023; 11:1191529. [PMID: 37113663 PMCID: PMC10128112 DOI: 10.3389/fbioe.2023.1191529] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2023] [Accepted: 04/04/2023] [Indexed: 04/29/2023] Open
Abstract
[This corrects the article DOI: 10.3389/fbioe.2022.990249.].
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Zhou Y, Li Y, Li D, Yin Y, Zhou F. Electrospun PHB/Chitosan Composite Fibrous Membrane and Its Degradation Behaviours in Different pH Conditions. J Funct Biomater 2022; 13:58. [PMID: 35645266 PMCID: PMC9149991 DOI: 10.3390/jfb13020058] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2022] [Revised: 05/10/2022] [Accepted: 05/11/2022] [Indexed: 11/16/2022] Open
Abstract
Peripheral nerve injury (PNI) is a neurological disorder that causes more than 9 million patients to suffer from dysfunction of moving and sensing. Using biodegradable polymers to fabricate an artificial nerve conduit that replicates the environment of the extracellular matrix and guides neuron regeneration through the damaged sites has been researched for decades and has led to promising but primarily pre-clinical outcomes. However, few peripheral nerve conduits (PNCs) have been constructed from controllable biodegradable polymeric materials that can maintain their structural integrity or completely degrade during and after nerve regeneration respectively. In this work, a novel PNC candidate material was developed via the electrospinning of polyhydroxy butyrate/chitosan (PHB/CS) composite polymers. An SEM characterisation revealed the resultant PHB/CS nanofibres with 0, 1 and 2 wt/v% CS had less and smaller beads than the nanofibres at 3 wt/v% CS. The water contact angle (WCA) measurement demonstrated that the wettability of PHB/CS electrospun fibres was significantly improved by additional CS. Furthermore, both the thermogravimetric analysis (TGA) and differentiation scanning calorimetry (DSC) results showed that PHB/CS polymers can be blended in a single phase with a trifluoracetic solvent in all compositions. Besides, the reduction in the degradation temperature (from 286.9 to 229.9 °C) and crystallinity (from 81.0% to 52.1%) with increasing contents of CS were further proven. Moreover, we found that the degradability of the PHB/CS nanofibres subjected to different pH values rated in the order of acidic > alkaline > phosphate buffer solution (PBS). Based on these findings, it can be concluded that PHB/CS electrospun fibres with variable blending ratios may be used for designing PNCs with controlled biodegradability.
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Affiliation(s)
- Yansheng Zhou
- Institute for Materials Discovery, Faculty of Mathematical Physical Sciences, University College London, 107 Roberts Building, Malet Place, London WC1E 7JE, UK
| | - Ying Li
- Spinal Repair Unit, Department of Brain Repair and Rehabilitation, UCL Institute of Neurology, Queen Square, London WC1N 3BG, UK; (Y.L.); (D.L.)
| | - Daqing Li
- Spinal Repair Unit, Department of Brain Repair and Rehabilitation, UCL Institute of Neurology, Queen Square, London WC1N 3BG, UK; (Y.L.); (D.L.)
| | - Yidan Yin
- Department of Chemistry, Christopher Ingold Building, University College London (UCL), 20 Gordon Street, London WC1H 0AJ, UK;
| | - Fenglei Zhou
- Institute for Materials Discovery, Faculty of Mathematical Physical Sciences, University College London, 107 Roberts Building, Malet Place, London WC1E 7JE, UK
- Centre for Medical Image Computing, University College London, London WC1V 6LJ, UK
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Ahlawat J, Deemer EM, Narayan M. Chitosan Nanoparticles Rescue Rotenone-Mediated Cell Death. Materials (Basel) 2019; 12:ma12071176. [PMID: 30978909 PMCID: PMC6480189 DOI: 10.3390/ma12071176] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/13/2019] [Revised: 04/01/2019] [Accepted: 04/04/2019] [Indexed: 12/20/2022]
Abstract
The aim of the present investigation was to study the anti-oxidant effect of chitosan nanoparticles on a human SH-SY5Y neuroblastoma cell line using a rotenone model to generate reactive oxygen species. Chitosan nanoparticles were synthesized using an ionotropic gelation method. The obtained nanoparticles were characterized using various analytical techniques such as Dynamic Light Scattering, Scanning Electron Microscopy, Transmission Electron Microscopy, Fourier Transmission Infrared spectroscopy and Atomic Force Microscopy. Incubation of SH-SY5Y cells with 50 µM rotenone resulted in 35-50% cell death within 24 h of incubation time. Annexin V/Propidium iodide dual staining verified that the majority of neuronal cell death occurred via the apoptotic pathway. The incubation of cells with chitosan nanoparticles reduced rotenone-initiated cytotoxicity and apoptotic cell death. Given that rotenone insult to cells causes oxidative stress, our results suggest that Chitosan nanoparticles have antioxidant and anti-apoptotic properties. Chitosan can not only serve as a novel therapeutic drug in the near future but also as a carrier for combo-therapy.
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Affiliation(s)
- Jyoti Ahlawat
- Department of Chemistry & Biochemistry, The University of Texas at El Paso, El Paso, TX 79968, USA.
| | - Eva M Deemer
- Material Science & Engineering department, The University of Texas at El Paso, El Paso, TX 79968, USA.
| | - Mahesh Narayan
- Department of Chemistry & Biochemistry, The University of Texas at El Paso, El Paso, TX 79968, USA.
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Cui Z, Lin L, Si J, Luo Y, Wang Q, Lin Y, Wang X, Chen W. Fabrication and characterization of chitosan/OGP coated porous poly(ε-caprolactone) scaffold for bone tissue engineering. J Biomater Sci Polym Ed 2017; 28:826-845. [PMID: 28278041 DOI: 10.1080/09205063.2017.1303867] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
As one of the stimulators on bone formation, osteogenic growth peptide (OGP) improves both proliferation and differentiation of the bone cells in vitro and in vivo. The aim of this work was the preparation of three dimensional porous poly(ε-caprolactone) (PCL) scaffold with high porosity, well interpore connectivity, and then its surface was modified by using chitosan (CS)/OGP coating for application in bone regeneration. In present study, the properties of porous PCL and CS/OGP coated PCL scaffold, including the microstructure, water absorption, porosity, hydrophilicity, mechanical properties, and biocompatibility in vitro were investigated. Results showed that the PCL and CS/OGP-PCL scaffold with an interconnected network structure have a porosity of more than 91.5, 80.8%, respectively. The CS/OGP-PCL scaffold exhibited better hydrophilicity and mechanical properties than that of uncoated PCL scaffold. Moreover, the results of cell culture test showed that CS/OGP coating could stimulate the proliferation and growth of osteoblast cells on CS/OGP-PCL scaffold. These finding suggested that the surface modification could be a effective method on enhancing cell adhesion to synthetic polymer-based scaffolds in tissue engineering application and the developed porous CS/OGP-PCL scaffold should be considered as alternative biomaterials for bone regeneration.
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Affiliation(s)
- Zhixiang Cui
- a School of Materials Science and Engineering, Fujian University of Technology , Fuzhou , China.,b Fujian Provincial Key Laboratory of Advanced Materials Processing and Application , Fuzhou , China.,c School of Materials Science and Engineering, Fuzhou University , Fuzhou , China.,d National Center for International Research of Micro-nano Molding Technology & Key Laboratory for Micro Molding Technology of Henan Province , Zhengzhou University , Zhengzhou , China
| | - Luyin Lin
- a School of Materials Science and Engineering, Fujian University of Technology , Fuzhou , China.,b Fujian Provincial Key Laboratory of Advanced Materials Processing and Application , Fuzhou , China
| | - Junhui Si
- a School of Materials Science and Engineering, Fujian University of Technology , Fuzhou , China.,b Fujian Provincial Key Laboratory of Advanced Materials Processing and Application , Fuzhou , China
| | - Yufei Luo
- e School of Pharmacy, Fujian Medical University , Fuzhou , China
| | - Qianting Wang
- a School of Materials Science and Engineering, Fujian University of Technology , Fuzhou , China.,b Fujian Provincial Key Laboratory of Advanced Materials Processing and Application , Fuzhou , China
| | - Yongnan Lin
- a School of Materials Science and Engineering, Fujian University of Technology , Fuzhou , China.,b Fujian Provincial Key Laboratory of Advanced Materials Processing and Application , Fuzhou , China
| | - Xiaofeng Wang
- d National Center for International Research of Micro-nano Molding Technology & Key Laboratory for Micro Molding Technology of Henan Province , Zhengzhou University , Zhengzhou , China
| | - Wenzhe Chen
- a School of Materials Science and Engineering, Fujian University of Technology , Fuzhou , China.,b Fujian Provincial Key Laboratory of Advanced Materials Processing and Application , Fuzhou , China.,c School of Materials Science and Engineering, Fuzhou University , Fuzhou , China
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Abdullah TA, Ibrahim NJ, Warsi MH. Chondroitin sulfate-chitosan nanoparticles for ocular delivery of bromfenac sodium: Improved permeation, retention, and penetration. Int J Pharm Investig 2016; 6:96-105. [PMID: 27051629 PMCID: PMC4797493 DOI: 10.4103/2230-973x.177823] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
Introduction: Superiority of topical instillation of drug into the cul-de-sac for the treatment of various ophthalmic complications can be validated with commercial availability of a large number of conventional formulations even though this mode of instillation still elicits limitations owing to poor ocular bioavailability. To overcome the drawbacks of conventional formulations, a large number of novel carriers have been investigated. In this perspective, a new novel nanocarrier, chondroitin sulfate (ChS)-chitosan (CS)-nanoparticles (NPs) are being evaluated for improved delivery of bromfenac sodium. Materials and Methods: Formulation was developed and optimized for CS, chondroitin, and initial drug concentration. Optimized formulation was evaluated for various in vitro aspects i.e., particles’ size, size distribution, zeta potential, shape and morphology, in vitro release profile, corneal permeation, corneal retention, corneal uptake, and ocular tolerance test. Results: The mean particle size, polydispersity index, zeta potential, and entrapment efficiency of optimized formulation were found to be 245.6 ± 14.22 nm, 0.187 ± 0.016, +37.59 ± 4.05 mV, and 71.72 ± 4.43%, respectively. Transmission electron microscopic analysis revealed a spherical shape of developed formulation. Further, formulation exhibited biphasic release profile and Korsmeyer–Peppas model was found to be the best fit model. Significantly high transcorneal permeation (1.62-fold) and corneal retention (1.92-fold) of bromfenac was observed through ChS-CS-NPs when compared with marketed eyedrops (P < 0.01). Furthermore, high corneal uptake of CHS-CS-NPs was confirmed by confocal laser scanning microscopy (CLSM). Safety profile of the developed formulation was established by hen's egg test-chorioallantoic membrane test. Conclusion: Encouraging outcomes of in vitro and ex vivo studies indicated that CHS-CS-NPs could be a potential substitute for improved ocular delivery.
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Affiliation(s)
| | | | - Musarrat Husain Warsi
- Department of Pharmacy, School of Medical and Allied Sciences, Galgotias University, Greater Noida, Uttar Pradesh, India
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Ndeboko B, Lemamy GJ, Nielsen PE, Cova L. Therapeutic Potential of Cell Penetrating Peptides (CPPs) and Cationic Polymers for Chronic Hepatitis B. Int J Mol Sci 2015; 16:28230-41. [PMID: 26633356 PMCID: PMC4691041 DOI: 10.3390/ijms161226094] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2015] [Revised: 11/17/2015] [Accepted: 11/20/2015] [Indexed: 02/06/2023] Open
Abstract
Chronic hepatitis B virus (HBV) infection remains a major health problem worldwide. Because current anti-HBV treatments are only virostatic, there is an urgent need for development of alternative antiviral approaches. In this context, cell-penetrating peptides (CPPs) and cationic polymers, such as chitosan (CS), appear of particular interest as nonviral vectors due to their capacity to facilitate cellular delivery of bioactive cargoes including peptide nucleic acids (PNAs) or DNA vaccines. We have investigated the ability of a PNA conjugated to different CPPs to inhibit the replication of duck hepatitis B virus (DHBV), a reference model for human HBV infection. The in vivo administration of PNA-CPP conjugates to neonatal ducklings showed that they reached the liver and inhibited DHBV replication. Interestingly, our results indicated also that a modified CPP (CatLip) alone, in the absence of its PNA cargo, was able to drastically inhibit late stages of DHBV replication. In the mouse model, conjugation of HBV DNA vaccine to modified CS (Man-CS-Phe) improved cellular and humoral responses to plasmid-encoded antigen. Moreover, other systems for gene delivery were investigated including CPP-modified CS and cationic nanoparticles. The results showed that these nonviral vectors considerably increased plasmid DNA uptake and expression. Collectively promising results obtained in preclinical studies suggest the usefulness of these safe delivery systems for the development of novel therapeutics against chronic hepatitis B.
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Affiliation(s)
- Bénédicte Ndeboko
- Institut National de la Sante et Recherche Medicale (INSERM) U1052, Cancer Research Center of Lyon (CRCL), Lyon 69003, France.
- Département de Biologie Cellulaire and Moléculaire-Génétique, Faculté de Médecine, Université des Sciences de la Santé, Libreville 241, Gabon.
| | - Guy Joseph Lemamy
- Département de Biologie Cellulaire and Moléculaire-Génétique, Faculté de Médecine, Université des Sciences de la Santé, Libreville 241, Gabon.
| | - Peter E Nielsen
- Department of Cellular and Molecular Medicine, Departement of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, the Panum Institute, University of Copenhagen, Copenhagen DK 2200N, Denmark.
| | - Lucyna Cova
- Institut National de la Sante et Recherche Medicale (INSERM) U1052, Cancer Research Center of Lyon (CRCL), Lyon 69003, France.
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Jing X, Mi HY, Wang XC, Peng XF, Turng LS. Shish-kebab-structured poly(ε-caprolactone) nanofibers hierarchically decorated with chitosan-poly(ε-caprolactone) copolymers for bone tissue engineering. ACS Appl Mater Interfaces 2015; 7:6955-65. [PMID: 25761418 DOI: 10.1021/acsami.5b00900] [Citation(s) in RCA: 85] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
In this work, scaffolds with a shish-kebab (SK) structure formed by poly(ε-caprolactone) (PCL) nanofibers and chitosan-PCL (CS-PCL) copolymers were prepared via electrospinning and subsequent crystallization for bone tissue engineering applications. The aim of this study was to introduce nanosized topography and the high biocompatibility of chitosan onto PCL nanofibers to enhance cell affinity to PCL scaffolds. CS-PCL copolymers with various ratios were synthesized, and then spontaneously crystallized as kebabs onto the electrospun PCL fibers, which acted as shishes. Scanning electron microscopy (SEM) results demonstrated that the copolymer with PCL to chitosan ratio of 8.8 could hierarchically decorate the PCL nanofibers and formed well-shaped kebabs on the PCL nanofiber surface. Water contact angle tests and biomimetic activity experiments revealed that the shish-kebab scaffolds with CS-PCL kebabs (PCL-SK(CS-PCL(8.8))) showed enhanced hydrophilicity and mineralization ability compared with smooth PCL and PCL-SK(PCL) shish-kebab scaffolds. Osteoblast-like MG63 cells cultured on the PCL-SK(CS-PCL(8.8)) scaffolds showed optimizing cell attachment, cell viability, and metabolic activity, demonstrating that this kind of scaffold has potential applications in bone tissue engineering.
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Affiliation(s)
- Xin Jing
- †National Engineering Research Center of Novel Equipment for Polymer Processing, The Key Laboratory for Polymer Processing Engineering of Ministry of Education, South China University of Technology, Guangzhou, 510640, China
- ‡Wisconsin Institute for Discovery, University of Wisconsin-Madison, Madison, Wisconsin 53715, United States
| | - Hao-Yang Mi
- †National Engineering Research Center of Novel Equipment for Polymer Processing, The Key Laboratory for Polymer Processing Engineering of Ministry of Education, South China University of Technology, Guangzhou, 510640, China
- ‡Wisconsin Institute for Discovery, University of Wisconsin-Madison, Madison, Wisconsin 53715, United States
| | - Xin-Chao Wang
- §National Engineering Research Center for Advanced Polymer Processing Technologies, Zhengzhou University, Zhengzhou, 450002, China
| | - Xiang-Fang Peng
- †National Engineering Research Center of Novel Equipment for Polymer Processing, The Key Laboratory for Polymer Processing Engineering of Ministry of Education, South China University of Technology, Guangzhou, 510640, China
| | - Lih-Sheng Turng
- ‡Wisconsin Institute for Discovery, University of Wisconsin-Madison, Madison, Wisconsin 53715, United States
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