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Lata K, Anderluh G, Chattopadhyay K. Entangling roles of cholesterol-dependent interaction and cholesterol-mediated lipid phase heterogeneity in regulating listeriolysin O pore-formation. Biochem J 2024; 481:1349-1377. [PMID: 39268843 DOI: 10.1042/bcj20240184] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2024] [Revised: 09/07/2024] [Accepted: 09/12/2024] [Indexed: 09/15/2024]
Abstract
Cholesterol-dependent cytolysins (CDCs) are the distinct class of β-barrel pore-forming toxins (β-PFTs) that attack eukaryotic cell membranes, and form large, oligomeric, transmembrane β-barrel pores. Listeriolysin O (LLO) is a prominent member in the CDC family. As documented for the other CDCs, membrane cholesterol is essential for the pore-forming functionality of LLO. However, it remains obscure how exactly cholesterol facilitates its pore formation. Here, we show that cholesterol promotes both membrane-binding and oligomerization of LLO. We demonstrate cholesterol not only facilitates membrane-binding, it also enhances the saturation threshold of LLO-membrane association, and alteration of the cholesterol-recognition motif in the LLO mutant (LLOT515G-L516G) compromises its pore-forming efficacy. Interestingly, such defect of LLOT515G-L516G could be rescued in the presence of higher membrane cholesterol levels, suggesting cholesterol can augment the pore-forming efficacy of LLO even in the absence of a direct toxin-cholesterol interaction. Furthermore, we find the membrane-binding and pore-forming abilities of LLOT515G-L516G, but not those of LLO, correlate with the cholesterol-dependent rigidity/ordering of the membrane lipid bilayer. Our data further suggest that the line tension derived from the lipid phase heterogeneity of the cholesterol-containing membranes could play a pivotal role in LLO function, particularly in the absence of cholesterol binding. Therefore, in addition to its receptor-like role, we conclude cholesterol can further facilitate the pore-forming, membrane-damaging functionality of LLO by asserting the optimal physicochemical environment in membranes. To the best of our knowledge, this aspect of the cholesterol-mediated regulation of the CDC mode of action has not been appreciated thus far.
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Affiliation(s)
- Kusum Lata
- Department of Biological Sciences, Indian Institute of Science Education and Research Mohali, Sector 81, SAS Nagar, Manauli, Mohali, Punjab 140306, India
| | - Gregor Anderluh
- Department of Molecular Biology and Nanobiotechnology, National Institute of Chemistry, Hajdrihova 19 1000 Ljubljana, Slovenia
| | - Kausik Chattopadhyay
- Department of Biological Sciences, Indian Institute of Science Education and Research Mohali, Sector 81, SAS Nagar, Manauli, Mohali, Punjab 140306, India
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2
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Wang Y, Zhou X, Xu R, Gao X, Cui S, Zhang S, Hu K, Wu C. Structural damage and organelle destruction: Mechanisms of pseudolaric acid B against S. parasitica. FISH & SHELLFISH IMMUNOLOGY 2024; 154:109894. [PMID: 39260528 DOI: 10.1016/j.fsi.2024.109894] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/30/2024] [Revised: 08/23/2024] [Accepted: 09/08/2024] [Indexed: 09/13/2024]
Abstract
This study aimed to investigate the potential of Chinese herbs in treating aquatic diseases. More particularly, the antibacterial properties and mechanisms of Chinese herbs and their monomers against Saprolegnia parasitica were investigated. In vitro antibacterial testing revealed that Cortex pseudolaricis exhibited significant antibacterial activity, with a minimum inhibitory concentration (MIC) of 0.98 mg/mL. The primary monomer responsible for this antibacterial effect was identified as pseudolaric acid B (PAB), with an MIC of 0.03 mg/mL. SEM and TEM analyses demonstrated that treatment with PAB resulted in structural damage to the cell wall and cell membrane of hyphae, leading to lysis of the cell wall and membrane of spores, organelle destruction, and vacuole formation within the cells. Analysis of the transcriptome and metabolome revealed that PAB disrupts amino acid, lipid, and nucleic acid metabolism in S. parasitica. This disruption impacts the biosynthesis and metabolism of various amino acids, including arginine, proline, glycine, serine, cysteine, methionine, glutamate, lysine, histidine, phenylalanine, tyrosine, and tryptophan. PAB also results in increased energy consumption and hindered energy generation in S. parasitica, as well as interference with the synthesis of membrane components such as DAG and phytosphingosine. Furthermore, PAB disrupts RNA, DNA, and ATP production in S. parasitica. Consequently, protein synthesis, energy supply, immune function and barrier structure in S. parasitica are weakened, and potentially leading to death. This study identifies potential antibacterial agents for environmentally friendly solutions for controlling fish saprolegniasis.
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Affiliation(s)
- Yali Wang
- National Demonstration Center for Experimental Fisheries Science Education, Shanghai Ocean University, Shanghai, China; National Pathogen Collection Center for Aquatic Animals, Shanghai Ocean University, Shanghai, China; Key Laboratory of Freshwater Aquatic Genetic Resources, Ministry of Agriculture, Shanghai Ocean University, Shanghai, China
| | - Xinghong Zhou
- National Demonstration Center for Experimental Fisheries Science Education, Shanghai Ocean University, Shanghai, China; National Pathogen Collection Center for Aquatic Animals, Shanghai Ocean University, Shanghai, China; Key Laboratory of Freshwater Aquatic Genetic Resources, Ministry of Agriculture, Shanghai Ocean University, Shanghai, China
| | - Ruze Xu
- National Demonstration Center for Experimental Fisheries Science Education, Shanghai Ocean University, Shanghai, China; National Pathogen Collection Center for Aquatic Animals, Shanghai Ocean University, Shanghai, China; Key Laboratory of Freshwater Aquatic Genetic Resources, Ministry of Agriculture, Shanghai Ocean University, Shanghai, China
| | - Xiaoning Gao
- National Demonstration Center for Experimental Fisheries Science Education, Shanghai Ocean University, Shanghai, China; National Pathogen Collection Center for Aquatic Animals, Shanghai Ocean University, Shanghai, China; Key Laboratory of Freshwater Aquatic Genetic Resources, Ministry of Agriculture, Shanghai Ocean University, Shanghai, China
| | - Subin Cui
- National Demonstration Center for Experimental Fisheries Science Education, Shanghai Ocean University, Shanghai, China; National Pathogen Collection Center for Aquatic Animals, Shanghai Ocean University, Shanghai, China; Key Laboratory of Freshwater Aquatic Genetic Resources, Ministry of Agriculture, Shanghai Ocean University, Shanghai, China
| | - Siyu Zhang
- National Demonstration Center for Experimental Fisheries Science Education, Shanghai Ocean University, Shanghai, China; National Pathogen Collection Center for Aquatic Animals, Shanghai Ocean University, Shanghai, China; Key Laboratory of Freshwater Aquatic Genetic Resources, Ministry of Agriculture, Shanghai Ocean University, Shanghai, China
| | - Kun Hu
- National Demonstration Center for Experimental Fisheries Science Education, Shanghai Ocean University, Shanghai, China; National Pathogen Collection Center for Aquatic Animals, Shanghai Ocean University, Shanghai, China; Key Laboratory of Freshwater Aquatic Genetic Resources, Ministry of Agriculture, Shanghai Ocean University, Shanghai, China.
| | - Congdi Wu
- National Demonstration Center for Experimental Fisheries Science Education, Shanghai Ocean University, Shanghai, China; National Pathogen Collection Center for Aquatic Animals, Shanghai Ocean University, Shanghai, China; Key Laboratory of Freshwater Aquatic Genetic Resources, Ministry of Agriculture, Shanghai Ocean University, Shanghai, China.
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3
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Zheng Q, Xi Y, Weng Y. Functional electrospun nanofibers: fabrication, properties, and applications in wound-healing process. RSC Adv 2024; 14:3359-3378. [PMID: 38259986 PMCID: PMC10801448 DOI: 10.1039/d3ra07075a] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2023] [Accepted: 12/28/2023] [Indexed: 01/24/2024] Open
Abstract
Electrostatic spinning as a technique for producing nanoscale fibers has recently attracted increasing attention due to its simplicity, versatility, and loadability. Nanofibers prepared by electrostatic spinning have been widely studied, especially in biomedical applications, because of their high specific surface area, high porosity, easy size control, and easy surface functionalization. Wound healing is a highly complex and dynamic process that is a crucial step in the body's healing process to recover from tissue injury or other forms of damage. Single-component nanofibers are more or less limited in terms of structural properties and do not fully satisfy various needs of the materials. This review aims to provide an in-depth analysis of the literature on the use of electrostatically spun nanofibers to promote wound healing, to overview the infinite possibilities for researchers to tap into their biomedical applications through functional composite modification of nanofibers for advanced and multifunctional materials, and to propose directions and perspectives for future research.
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Affiliation(s)
- Qianlan Zheng
- College of Light Industry Science and Engineering, Beijing Technology and Business University Beijing 100048 China
| | - Yuewei Xi
- College of Light Industry Science and Engineering, Beijing Technology and Business University Beijing 100048 China
- Beijing Key Laboratory of Quality Evaluation Technology for Hygiene and Safety of Plastics, Beijing Technology and Business University Beijing 100048 China
| | - Yunxuan Weng
- College of Light Industry Science and Engineering, Beijing Technology and Business University Beijing 100048 China
- Beijing Key Laboratory of Quality Evaluation Technology for Hygiene and Safety of Plastics, Beijing Technology and Business University Beijing 100048 China
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Hyun SW, Han S, Son JW, Song MS, Kim DA, Ha SD. Development and efficacy assessment of hand sanitizers and polylactic acid films incorporating caffeic acid and vanillin for enhanced antiviral properties against HCoV-229E. Virol J 2023; 20:194. [PMID: 37641064 PMCID: PMC10463313 DOI: 10.1186/s12985-023-02159-z] [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] [Received: 04/30/2023] [Accepted: 08/14/2023] [Indexed: 08/31/2023] Open
Abstract
BACKGROUND Although three years after the outbreak of SARS-CoV-2, the virus is still having a significant impact on human health and the global economy. Infection through respiratory droplets is the main transmission route, but the transmission of the virus by surface contact cannot be ignored. Hand sanitizers and antiviral films can be applied to control SARS-CoV-2, but sanitizers and films show drawbacks such as resistance of the virus against ethanol and environmental problems including the overuse of plastics. Therefore, this study suggested applying natural substrates to hand sanitizers and antiviral films made of biodegradable plastic (PLA). This approach is expected to provide advantages for the easy control of SARS-CoV-2 through the application of natural substances. METHODS Antiviral disinfectants and films were manufactured by adding caffeic acid and vanillin to ethanol, isopropyl alcohol, benzalkonium chloride, and PLA. Antiviral efficacies were evaluated with slightly modified international standard testing methods EN 14,476 and ISO 21,702. RESULTS In suspension, all the hand sanitizers evaluated in this study showed a reduction of more than 4 log within 2 min against HCoV-229E. After natural substances were added to the hand sanitizers, the time needed to reach the detection limit of the viral titer was shortened both in suspension and porcine skin. However, no difference in the time needed to reach the detection limit of the viral titer was observed in benzalkonium chloride. In the case of antiviral films, those made using both PLA and natural substances showed a 1 log reduction of HCoV-229E compared to the neat PLA film for all treatment groups. Furthermore, the influence of the organic load was evaluated according to the number of contacts of the antiviral products with porcine skin. Ten rubs on the skin resulted in slightly higher antiviral activity than 50 rubs. CONCLUSION This study revealed that caffeic acid and vanillin can be effectively used to control HCoV-229E for hand sanitizers and antiviral films. In addition, it is recommended to remove organic matter from the skin for maintaining the antiviral activity of hand sanitizer and antiviral film as the antiviral activity decreased as the organic load increased in this study.
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Affiliation(s)
- Seok-Woo Hyun
- Department of Food Science and Technology, Advanced Food Safety Research Group, Chung-Ang University, Anseong-si, Gyeonggi-do, 17546, Republic of Korea
| | - Sangha Han
- Department of Food Science and Technology, Advanced Food Safety Research Group, Chung-Ang University, Anseong-si, Gyeonggi-do, 17546, Republic of Korea
| | - Jeong Won Son
- Department of Food Science and Technology, Advanced Food Safety Research Group, Chung-Ang University, Anseong-si, Gyeonggi-do, 17546, Republic of Korea
| | - Min Su Song
- Department of Food Science and Technology, Advanced Food Safety Research Group, Chung-Ang University, Anseong-si, Gyeonggi-do, 17546, Republic of Korea
| | - Dan Ah Kim
- Department of Food Science and Technology, Advanced Food Safety Research Group, Chung-Ang University, Anseong-si, Gyeonggi-do, 17546, Republic of Korea
| | - Sang-Do Ha
- Department of Food Science and Technology, Advanced Food Safety Research Group, Chung-Ang University, Anseong-si, Gyeonggi-do, 17546, Republic of Korea.
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5
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Ubeyitogullari A, Ahmadzadeh S, Kandhola G, Kim JW. Polysaccharide-based porous biopolymers for enhanced bioaccessibility and bioavailability of bioactive food compounds: Challenges, advances, and opportunities. Compr Rev Food Sci Food Saf 2022; 21:4610-4639. [PMID: 36199178 DOI: 10.1111/1541-4337.13049] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2021] [Revised: 07/28/2022] [Accepted: 08/31/2022] [Indexed: 01/28/2023]
Abstract
Bioactive food compounds, such as lycopene, curcumin, phytosterols, and resveratrol, have received great attention due to their potential health benefits. However, these bioactive compounds (BCs) have poor chemical stability during processing and low bioavailability after consumption. Several delivery systems have been proposed for enhancing their stability and bioavailability. Among these methods, porous biopolymers have emerged as alternative encapsulation materials, as they have superior properties like high surface area, porosity, and tunable surface chemistry to entrap BCs. This reduces the crystallinity (especially for the lipophilic ones) and particle size, and in turn, increases solubilization and bioavailability. Also, loading BCs into the porous matrix can protect them against environmental stresses such as light, heat, oxygen, and pH. This review introduces polysaccharide-based porous biopolymers for improving the bioaccessibility/bioavailability of bioactive food compounds and discusses their recent applications in the food industry. First, bioaccessibility and bioavailability are described with a special emphasis on the factors affecting them. Then, porous biopolymer fabrication methods, including supercritical carbon dioxide (SC-CO2 ) drying, freeze-drying, and electrospinning and electrospraying, are thoroughly discussed. Finally, common polysaccharide-based biopolymers (i.e., starch, nanocellulose, alginate, and pectin) used for generating porous materials are reviewed, and their current and potential future food applications are critically discussed.
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Affiliation(s)
- Ali Ubeyitogullari
- Department of Food Science, University of Arkansas, Fayetteville, Arkansas, USA.,Department of Biological and Agricultural Engineering, University of Arkansas, Fayetteville, Arkansas, USA
| | - Safoura Ahmadzadeh
- Department of Food Science, University of Arkansas, Fayetteville, Arkansas, USA
| | - Gurshagan Kandhola
- Department of Biological and Agricultural Engineering, University of Arkansas, Fayetteville, Arkansas, USA.,Institute for Nanoscience and Engineering, University of Arkansas, Fayetteville, Arkansas, USA
| | - Jin-Woo Kim
- Department of Biological and Agricultural Engineering, University of Arkansas, Fayetteville, Arkansas, USA.,Institute for Nanoscience and Engineering, University of Arkansas, Fayetteville, Arkansas, USA.,Cell and Molecular Biology Program, University of Arkansas, Fayetteville, Arkansas, USA.,Materials Science and Engineering Program, University of Arkansas, Fayetteville, Arkansas, USA
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6
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Özen İ, Wang X. Biomedicine: electrospun nanofibrous hormonal therapies through skin/tissue—a review. INT J POLYM MATER PO 2021. [DOI: 10.1080/00914037.2021.1985493] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- İlhan Özen
- Textile Engineering Department, Erciyes University, Melikgazi, Kayseri, Turkey
| | - Xungai Wang
- Institute for Frontier Materials, Deakin University, Geelong, Australia
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7
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Huang K, Yuan Y, Baojun X. A Critical Review on the Microencapsulation of Bioactive Compounds and Their Application. FOOD REVIEWS INTERNATIONAL 2021. [DOI: 10.1080/87559129.2021.1963978] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Kehao Huang
- Food Science and Technology Program, BNU-HKBU United International College, Zhuhai, China
- Department Of Food Science And Agricultural Chemistry, McGill University, Quebec, Canada
| | - Yingzhi Yuan
- Food Science and Technology Program, BNU-HKBU United International College, Zhuhai, China
- Department Of Biochemistry, University College London, London, UK
| | - Xu Baojun
- Food Science and Technology Program, BNU-HKBU United International College, Zhuhai, China
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8
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Wilk S, Benko A. Advances in Fabricating the Electrospun Biopolymer-Based Biomaterials. J Funct Biomater 2021; 12:26. [PMID: 33923664 PMCID: PMC8167588 DOI: 10.3390/jfb12020026] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2021] [Revised: 03/18/2021] [Accepted: 03/31/2021] [Indexed: 12/13/2022] Open
Abstract
Biopolymers formed into a fibrous morphology through electrospinning are of increasing interest in the field of biomedicine due to their intrinsic biocompatibility and biodegradability and their ability to be biomimetic to various fibrous structures present in animal tissues. However, their mechanical properties are often unsatisfactory and their processing may be troublesome. Thus, extensive research interest is focused on improving these qualities. This review article presents the selection of the recent advances in techniques aimed to improve the electrospinnability of various biopolymers (polysaccharides, polynucleotides, peptides, and phospholipids). The electrospinning of single materials, and the variety of co-polymers, with and without additives, is covered. Additionally, various crosslinking strategies are presented. Examples of cytocompatibility, biocompatibility, and antimicrobial properties are analyzed. Special attention is given to whey protein isolate as an example of a novel, promising, green material with good potential in the field of biomedicine. This review ends with a brief summary and outlook for the biomedical applicability of electrospinnable biopolymers.
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Affiliation(s)
| | - Aleksandra Benko
- Faculty of Materials Science and Ceramics, AGH University of Science and Technology, A. Mickiewicz 30 Avenue, 30-059 Krakow, Poland;
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9
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A novel route to obtain TiO2 nanoparticles using green synthesis with vanillin and Bougainvillea glabra Choisy extract. APPLIED NANOSCIENCE 2021. [DOI: 10.1007/s13204-020-01648-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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10
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Liaw CC, Lin YC, Wu SY, Kuo JCL, Lin ZH, Lin KW, Hui-Chi H, Yang Kuo LM, Kuo YH. Anti-inflammatory constituents from Phyllostachys makinoi Hayata. Nat Prod Res 2021; 36:1425-1432. [PMID: 33583286 DOI: 10.1080/14786419.2021.1885406] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
A novel chromone analogue, phyllomakin A (1), and a new flavonolignan, (-)-quiquelignan C (2), along with 18 phenolic and 2 triterpenoids, were isolated from the leaves of Phyllostachys makinoi Hayata. The structures of 1-22 were elucidated by an application of various spectroscopic analyses (1D & 2D NMR and MS) and compared with reported data. A biological evaluation showed that compound 3 had very potent anti-NO production activity (IC50 = 4.80 µM), while compounds 2, 6, 11, and 15 showed moderate inhibitory effects (IC50 = 10.19, 13.26, 13.56, and 10.96 µM, respectively) without affecting cell viability at 20 μM.
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Affiliation(s)
- Chia-Ching Liaw
- Division of Materia Medica Development, National Research Institute of Chinese Medicine, Taipei, Taiwan.,Department of Biochemical Science and Technology, National Chiayi University, Chiayi, Taiwan
| | - Yu-Chi Lin
- Division of Materia Medica Development, National Research Institute of Chinese Medicine, Taipei, Taiwan.,Department of Marine Biotechnology and Resources, National Sun Yat-sen University, Kaohsiung, Taiwan
| | - Shao-Yu Wu
- Department of Life Sciences and Institute of Genome Sciences, National Yang-Ming University, Taipei, Taiwan
| | - Jenny Chun-Ling Kuo
- Division of Chinese Internal Medicine, Center for Traditional Chinese Medicine, Chang Gung Memorial Hospital, Tao-Yuan, Taiwan
| | - Zhi-Hu Lin
- Division of Materia Medica Development, National Research Institute of Chinese Medicine, Taipei, Taiwan
| | - Kai-Wei Lin
- Division of Materia Medica Development, National Research Institute of Chinese Medicine, Taipei, Taiwan
| | - Huang Hui-Chi
- Department of Chinese Pharmaceutical Sciences and Chinese Medicine Resources, China Medical University, Taichung, Taiwan
| | - Li-Ming Yang Kuo
- Department of Research and Development, Starsci Biotech Co. Ltd, Taipei, Taiwan
| | - Yao-Haur Kuo
- Division of Materia Medica Development, National Research Institute of Chinese Medicine, Taipei, Taiwan.,Graduate Institute of Integrated Medicine, College of Chinese Medicine, China Medical University, Taichung, Taiwan
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11
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Wei S, Liu X, Zhou J, Zhang J, Dong A, Huang P, Wang W, Deng L. Dual-crosslinked nanocomposite hydrogels based on quaternized chitosan and clindamycin-loaded hyperbranched nanoparticles for potential antibacterial applications. Int J Biol Macromol 2020; 155:153-162. [PMID: 32224179 DOI: 10.1016/j.ijbiomac.2020.03.182] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2019] [Revised: 03/20/2020] [Accepted: 03/21/2020] [Indexed: 12/31/2022]
Abstract
Bacterial infections caused by S. aureus are prevalent all over the world. Antibiotic-loaded hydrogel has been reported as a promising drug delivery system for the treatment. However, the direct incorporation of antibiotics into the hydrogel leads to quick initial burst release, which results in a sub-inhibition concentration of antibiotics in local environment and induces the antibiotic resistance of bacteria. In this work, a novel dual-crosslinked nanocomposite hydrogel (imine bond and nanoparticle crosslinking) was prepared based on quaternized chitosan and clindamycin-loaded hyperbranched nanoparticles. Dual-crosslinked nanocomposite structure endowed the hydrogel with considerable mechanical and injectable properties. Dual pH responses were introduced into the hydrogel, and a controlled clindamycin release was observed in the acidic environment, which might avoid inducing the antibiotic resistance of bacteria. What's more, the antibacterial results demonstrated an excellent antibacterial activity of the hydrogel for not only E. coli and S. aureus, but also Methicillin-resistant S. aureus (MRSA). Nearly 90% of bacteria was killed after contacting with the hydrogel. In addition, the in vitro cell cytotoxicity test results showed that the hydrogel owned good biocompatibility. The in vitro cell viability was >90%. Above all, this dual-crosslinked nanocomposite hydrogel owned possibility for potential antibacterial applications.
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Affiliation(s)
- Shibo Wei
- Department of Polymer Science and Technology, Key Laboratory of Systems Bioengineering of the Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
| | - Xiang Liu
- Department of Polymer Science and Technology, Key Laboratory of Systems Bioengineering of the Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
| | - Junhui Zhou
- Department of Polymer Science and Technology, Key Laboratory of Systems Bioengineering of the Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
| | - Jianhua Zhang
- Department of Polymer Science and Technology, Key Laboratory of Systems Bioengineering of the Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
| | - Anjie Dong
- Department of Polymer Science and Technology, Key Laboratory of Systems Bioengineering of the Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China; Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300072, China
| | - Pingsheng Huang
- Tianjin Key Laboratory of Biomaterial Research, Institute of Biomedical Engineering, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin 300192, China
| | - Weiwei Wang
- Tianjin Key Laboratory of Biomaterial Research, Institute of Biomedical Engineering, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin 300192, China
| | - Liandong Deng
- Department of Polymer Science and Technology, Key Laboratory of Systems Bioengineering of the Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China.
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12
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Vilchez A, Acevedo F, Cea M, Seeger M, Navia R. Applications of Electrospun Nanofibers with Antioxidant Properties: A Review. NANOMATERIALS (BASEL, SWITZERLAND) 2020; 10:E175. [PMID: 31968539 PMCID: PMC7022755 DOI: 10.3390/nano10010175] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 11/15/2019] [Revised: 12/31/2019] [Accepted: 01/08/2020] [Indexed: 01/27/2023]
Abstract
Antioxidants can be encapsulated to enhance their solubility or bioavailability or to protect them from external factors. Electrospinning has proven to be an excellent option for applications in nanotechnology, as electrospun nanofibers can provide the necessary environment for antioxidant encapsulation. Forty-nine papers related to antioxidants loaded onto electrospun nanofibers were categorized and reviewed to identify applications and new trends. Medical and food fields were commonly proposed for the newly obtained composites. Among the polymers used as a matrix for the electrospinning process, synthetic poly (lactic acid) and polycaprolactone were the most widely used. In addition, natural compounds and extracts were identified as antioxidants that help to inhibit free radical and oxidative damage in tissues and foods. The most recurrent active compounds used were tannic acid (polyphenol), quercetin (flavonoid), curcumin (polyphenol), and vitamin B6 (pyridoxine). The incorporation of active compounds in nanofibers often improves their bioavailability, giving them increased stability, changing the mechanical properties of polymers, enhancing nanofiber biocompatibility, and offering novel properties for the required field. Although most of the polymers used were synthetic, natural polymers such as silk fibroin, chitosan, cellulose, pullulan, polyhydroxybutyrate, and zein have proven to be proper matrices for this purpose.
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Affiliation(s)
- Ariel Vilchez
- Doctoral Program in Sciences of Natural Resources, Universidad de La Frontera, Casilla 54-D, Temuco, Chile;
| | - Francisca Acevedo
- Department of Basic Sciences, Faculty of Medicine, Universidad de La Frontera, Casilla 54-D, Temuco, Chile;
- Scientific and Technological Bioresource Nucleus, BIOREN, Universidad de La Frontera, Casilla 54-D, Temuco, Chile;
| | - Mara Cea
- Scientific and Technological Bioresource Nucleus, BIOREN, Universidad de La Frontera, Casilla 54-D, Temuco, Chile;
- Department of Chemical Engineering, Faculty of Engineering and Sciences, Universidad de La Frontera, Casilla 54-D, Temuco, Chile
| | - Michael Seeger
- Laboratorio de Microbiología Molecular y Biotecnología Ambiental, Departamento de Química & Centro de Biotecnología (CBDAL), Universidad Técnica Federico Santa María, Avenida España 1680, Valparaíso 2340000, Chile;
| | - Rodrigo Navia
- Scientific and Technological Bioresource Nucleus, BIOREN, Universidad de La Frontera, Casilla 54-D, Temuco, Chile;
- Department of Chemical Engineering, Faculty of Engineering and Sciences, Universidad de La Frontera, Casilla 54-D, Temuco, Chile
- Centre for Biotechnology and Bioengineering (CeBiB), Faculty of Engineering and Sciences, Universidad de La Frontera, Casilla 54-D, Temuco, Chile
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13
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Shear at Fluid-Fluid Interfaces Affects the Surface Topologies of Alginate Microfibers. CLEAN TECHNOLOGIES 2019. [DOI: 10.3390/cleantechnol1010018] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Hydrogel microfibers have great potential for applications such as tissue engineering or three-dimensional cell culturing. Their favorable attributes can lead to tissue models that can help to reduce or eliminate animal testing, thereby providing an eco-friendly alternative to this unsustainable process. In addition to their highly tunable mechanical properties, this study shows that varying the viscosity and flow rates of the prepolymer core solution and gellator sheath solution within a microfluidic device can affect the surface topology of the resulting microfibers. Higher viscosity core solutions are more resistant to deformation from shear force within the microfluidic device, thereby yielding smoother fibers. Similarly, maintaining a smaller velocity gradient between the fluids within the microfluidic device minimizes shear force and smooths fiber surfaces. This simple modification provides insight into manufacturing microfibers with highly tunable properties.
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14
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Lim LT, Mendes AC, Chronakis IS. Electrospinning and electrospraying technologies for food applications. ADVANCES IN FOOD AND NUTRITION RESEARCH 2019; 88:167-234. [PMID: 31151724 DOI: 10.1016/bs.afnr.2019.02.005] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Electrospinning and electrospraying are versatile techniques for the production of nano- to micro-scale fibers and particles. Over the past 2 decades, significant progresses have been made to advance the fundamental understandings of these electrohydrodynamic processes. Researchers have investigated different polymeric and non-polymeric substrates for producing submicron electrospun/electrosprayed materials of unique morphologies and physicochemical properties. This chapter provides an overview on the basic principles of electrospinning and electrospraying, highlighting the effects of key processing and solution parameters. Electrohydrodynamic phenomena of edible substrates, including polysaccharides (xanthan, alginate, starch, cyclodextrin, pullulan, dextran, modified celluloses, and chitosan), proteins (zein, what gluten, whey protein, soy protein, gelatin, etc.), and phospholipids are reviewed. Selected examples are presented on how ultrafine fibers and particles derived from these substrates are being exploited for food and nutraceutical applications. Finally, the challenges and opportunities of the electrostatic methods are discussed.
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Affiliation(s)
- Loong-Tak Lim
- Department of Food Science, University of Guelph, Guelph, ON, Canada.
| | - Ana C Mendes
- Nano-BioScience Research Group, DTU-Food, Technical University of Denmark, Lyngby, Denmark
| | - Ioannis S Chronakis
- Nano-BioScience Research Group, DTU-Food, Technical University of Denmark, Lyngby, Denmark
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Lan W, Liang X, Lan W, Ahmed S, Liu Y, Qin W. Electrospun Polyvinyl Alcohol/d-Limonene Fibers Prepared by Ultrasonic Processing for Antibacterial Active Packaging Material. Molecules 2019; 24:molecules24040767. [PMID: 30791596 PMCID: PMC6412656 DOI: 10.3390/molecules24040767] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2019] [Revised: 02/14/2019] [Accepted: 02/18/2019] [Indexed: 11/24/2022] Open
Abstract
Novel fibers containing different ratios of PVA and d-limonene were fabricated using electrospinning for antibacterial active packaging applications. The PVA/d-limonene fibers were thoroughly characterized using a scanning electron microscope, fourier-transform infrared spectrometry, thermal gravimetry, differential scanning calorimetry, tensile tests, and oxygen permeability tests. The results of these analyses showed that the highest tensile strength and elongation at break values of 3.87 ± 0.25 MPa and 55.62 ± 2.93%, respectively, were achieved for a PVA/d-limonene ratio of 7:3 (v/v) and an ultrasonication time of 15 min during processing. This material also showed the lowest oxygen permeation and the best degradability and bacteriostatic properties of all samples.
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Affiliation(s)
- Weijie Lan
- College of Food Science, Sichuan Agricultural University, Yaan 625014, China.
- INRA, UMR408 Sécurité et Qualité des Produits d'Origine Végétale, F-84000 Avignon, France.
| | - Xue Liang
- College of Food Science, Sichuan Agricultural University, Yaan 625014, China.
| | - Wenting Lan
- College of Food Science, Sichuan Agricultural University, Yaan 625014, China.
| | - Saeed Ahmed
- College of Food Science, Sichuan Agricultural University, Yaan 625014, China.
| | - Yaowen Liu
- College of Food Science, Sichuan Agricultural University, Yaan 625014, China.
- School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu 610031, China.
- California NanoSystems Institute, University of California, Los Angeles, CA 90095, USA.
| | - Wen Qin
- College of Food Science, Sichuan Agricultural University, Yaan 625014, China.
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Faralli A, Shekarforoush E, Ajalloueian F, Mendes AC, Chronakis IS. In vitro permeability enhancement of curcumin across Caco-2 cells monolayers using electrospun xanthan-chitosan nanofibers. Carbohydr Polym 2019; 206:38-47. [DOI: 10.1016/j.carbpol.2018.10.073] [Citation(s) in RCA: 51] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2018] [Revised: 09/19/2018] [Accepted: 10/24/2018] [Indexed: 11/15/2022]
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17
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Synergistic effects of plant extracts and polymers on structural and antibacterial properties for wound healing. Polym Bull (Berl) 2018. [DOI: 10.1007/s00289-018-2578-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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