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Ionic Strength Dependence of the Complex Coacervation between Lactoferrin and β-Lactoglobulin. Foods 2023; 12:foods12051040. [PMID: 36900563 PMCID: PMC10001252 DOI: 10.3390/foods12051040] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2022] [Revised: 02/21/2023] [Accepted: 02/21/2023] [Indexed: 03/06/2023] Open
Abstract
Heteroprotein complex coacervation is an assembly formed by oppositely charged proteins in aqueous solution that leads to liquid-liquid phase separation. The ability of lactoferrin and β-lactoglobulin to form complex coacervates at pH 5.5 under optimal protein stoichiometry has been studied in a previous work. The goal of the current study is to determine the influence of ionic strength on the complex coacervation between these two proteins using direct mixing and desalting protocols. The initial interaction between lactoferrin and β-lactoglobulin and subsequent coacervation process were highly sensitive to the ionic strength. No microscopic phase separation was observed beyond a salt concentration of 20 mM. The coacervate yield decreased drastically with increasing added NaCl from 0 to 60 mM. The charge-screening effect induced by increasing the ionic strength is attributed to a decrease of interaction between the two oppositely charged proteins throughout a decrease in Debye length. Interestingly, as shown by isothermal titration calorimetry, a small concentration of NaCl around 2.5 mM promoted the binding energy between the two proteins. These results shed new light on the electrostatically driven mechanism governing the complex coacervation in heteroprotein systems.
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2
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Not Just Anticoagulation—New and Old Applications of Heparin. Molecules 2022; 27:molecules27206968. [DOI: 10.3390/molecules27206968] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2022] [Revised: 10/07/2022] [Accepted: 10/12/2022] [Indexed: 11/16/2022] Open
Abstract
In recent decades, heparin, as the most important anticoagulant drug, has been widely used in clinical settings to prevent and treat thrombosis in a variety of diseases. However, with in-depth research, the therapeutic potential of heparin is being explored beyond anticoagulation. To date, heparin and its derivatives have been tested in the protection against and repair of inflammatory, antitumor, and cardiovascular diseases. It has also been explored as an antiangiogenic, preventive, and antiviral agent for atherosclerosis. This review focused on the new and old applications of heparin and discussed the potential mechanisms explaining the biological diversity of heparin.
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3
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Sagawa T, Sakakibara M, Iijima K, Yataka Y, Hashizume M. Preparation and physical properties of free-standing films made of polyion complexes of carboxymethylated hyaluronic acid and chitosan. POLYMER 2022. [DOI: 10.1016/j.polymer.2022.125033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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4
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Controlled Polyelectrolyte Association of Chitosan and Carboxylated Nano-Fibrillated Cellulose by Desalting. Polymers (Basel) 2021; 13:polym13122023. [PMID: 34205669 PMCID: PMC8234568 DOI: 10.3390/polym13122023] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2021] [Revised: 06/16/2021] [Accepted: 06/18/2021] [Indexed: 12/18/2022] Open
Abstract
We prepared chitosan (CHI) hydrogels reinforced with highly charged cellulose nanofibrils (CNF) by the desalting method. To this end, the screening of electrostatic interactions between CHI polycation and CNF polyanion was performed by adding NaCl at 0.4 mol/L to the chitosan acetate solution and to the cellulose nanofibrils suspension. The polyelectrolyte complexation between CHI polycation and CNF polyanion was then triggered by desalting the CHI/CNF aqueous mixture by multistep dialysis, in large excess of chitosan. Further gelation of non-complexed CHI was performed by alkaline neutralization of the polymer, yielding high reinforcement effects as probed by the viscoelastic properties of the final hydrogel. The results showed that polyelectrolyte association by desalting can be achieved with a polyanionic nanoparticle partner. Beyond obtaining hydrogel with improved mechanical performance, these composite hydrogels may serve as precursor for dried solid forms with high mechanical properties.
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5
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Design of chitosan-based particle systems: A review of the physicochemical foundations for tailored properties. Carbohydr Polym 2020; 250:116968. [DOI: 10.1016/j.carbpol.2020.116968] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2020] [Revised: 08/09/2020] [Accepted: 08/16/2020] [Indexed: 12/13/2022]
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6
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Wu D, Zhu L, Li Y, Zhang X, Xu S, Yang G, Delair T. Chitosan-based Colloidal Polyelectrolyte Complexes for Drug Delivery: A Review. Carbohydr Polym 2020; 238:116126. [PMID: 32299572 DOI: 10.1016/j.carbpol.2020.116126] [Citation(s) in RCA: 110] [Impact Index Per Article: 27.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2019] [Revised: 02/28/2020] [Accepted: 03/04/2020] [Indexed: 12/15/2022]
Abstract
Polyelectrolyte complexes (PECs) as safe drug delivery carriers, are spontaneously formed by mixing the oppositely charged polyelectrolyte solutions in water without using organic solvents nor chemical cross-linker or surfactant. Intensifying attentions on the PECs study are aroused in academia and industry since the fabrication process of PECs is mild and they are ideal vectors for the delivery of susceptible drugs and macromolecules. Chitosan as the unique natural cationic polysaccharide, is a good bioadhesive material. Besides, due to its excellent biocompatibility, biodegradability, abundant availability and hydrophilic nature, chitosan-based PECs have been extensively applied for drug delivery, particularly after administration through mucosal and parenteral routes. The purpose of this review is to compile the recent advances on the biomedical applications of chitosan-based PECs, with specific focuses on the mucosal delivery, cancer therapy, gene delivery and anti-HIV therapy. The challenges and the perspectives of the chitosan-based PECs are briefly commented as well.
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Affiliation(s)
- Danjun Wu
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou 310014, China
| | - Lixi Zhu
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou 310014, China
| | - Yi Li
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou 310014, China
| | - Xueling Zhang
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou 310014, China
| | - Shumin Xu
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou 310014, China
| | - Gensheng Yang
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou 310014, China.
| | - Thierry Delair
- Ingénierie des Matériaux Polymères, UMR CNRS 5223, Université de Lyon, Université Claude Bernard Lyon 1, 15 Bd. André Latarjet, 69622, Villeurbanne Cedex, France.
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7
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On the Formation and Stability of Chitosan/Hyaluronan-Based Complex Coacervates. MOLECULES (BASEL, SWITZERLAND) 2020; 25:molecules25051071. [PMID: 32121005 PMCID: PMC7179103 DOI: 10.3390/molecules25051071] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/28/2020] [Revised: 02/18/2020] [Accepted: 02/24/2020] [Indexed: 02/07/2023]
Abstract
This contribution is aimed at extending our previous findings on the formation and stability of chitosan/hyaluronan-based complex coacervates. Colloids are herewith formed by harnessing electrostatic interactions between the two polyelectrolytes. The presence of tiny amounts of the multivalent anion tripolyphosphate (TPP) in the protocol synthesis serves as an adjuvant “point-like” cross-linker for chitosan. Hydrochloride chitosans at different viscosity average molar mass, Mv¯, in the range 10,000–400,000 g/mol, and fraction of acetylated units, FA, (0.16, 0.46 and 0.63) were selected to fabricate a large library of formulations. Concepts such as coacervate size, surface charge and homogeneity in relation to chitosan variables are herein disclosed. The stability of coacervates in Phosphate Buffered Saline (PBS) was verified by means of scattering techniques, i.e., Dynamic Light Scattering (DLS) and Small-Angle X-ray Scattering (SAXS). The conclusions from this set of experiments are the following: (i) a subtle equilibrium between chitosan FA and Mv¯ does exist in ensuring colloidal stability; (ii) once diluted in PBS, osmotic swelling-driven forces trigger the enlargement of the polymeric mesh with an ensuing increase of coacervate size and porosity.
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8
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Ryu J, Kim S, Oh I, Kato S, Kosuge T, Sokolova AV, Lee J, Otsuka H, Sohn D. Internal Structure of Hyaluronic Acid Hydrogels Controlled by Iron(III) Ion–Catechol Complexation. Macromolecules 2019. [DOI: 10.1021/acs.macromol.9b00889] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Jungju Ryu
- Department of Chemistry, Research Institute of Natural Sciences, Hanyang University, Seoul 04763, Korea
- Neutron Science Center, Korea Atomic Energy Research Institute, Daejeon 34057, Korea
| | - Sunhye Kim
- Department of Chemistry, Research Institute of Natural Sciences, Hanyang University, Seoul 04763, Korea
| | - Inwook Oh
- Department of Chemistry, Research Institute of Natural Sciences, Hanyang University, Seoul 04763, Korea
| | - Sota Kato
- Department of Chemical Science and Engineering, Tokyo Institute of Technology, 2-12-1
Ookayama, Meguro-ku, Tokyo 152-8550, Japan
| | - Takahiro Kosuge
- Department of Chemical Science and Engineering, Tokyo Institute of Technology, 2-12-1
Ookayama, Meguro-ku, Tokyo 152-8550, Japan
| | - Anna V. Sokolova
- Australian Centre for Neutron Scattering, ANSTO, Lucas Heights, New South Wales 2234, Australia
| | - Jeongwook Lee
- Department of Chemistry, Research Institute of Natural Sciences, Hanyang University, Seoul 04763, Korea
| | - Hideyuki Otsuka
- Department of Chemical Science and Engineering, Tokyo Institute of Technology, 2-12-1
Ookayama, Meguro-ku, Tokyo 152-8550, Japan
| | - Daewon Sohn
- Department of Chemistry, Research Institute of Natural Sciences, Hanyang University, Seoul 04763, Korea
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9
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Liu Q, Li M, Xiong L, Qiu L, Bian X, Sun C, Sun Q. Characterization of Cationic Modified Debranched Starch and Formation of Complex Nanoparticles with κ-Carrageenan and Low Methoxyl Pectin. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2019; 67:2906-2915. [PMID: 30789728 DOI: 10.1021/acs.jafc.8b05045] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
The functional modifications of debranched starch (DBS) has been attracting the interest of researchers. This study marks the first time that DBS was modified by cationization through the use of (3-chloro-2-hydroxypropyl) trimethylammonium chloride with the introduction of cationic functional groups. The physicochemical properties and structural characteristics of cationized debranched starch (CDBS) were systematically assessed. The results demonstrate that the maximum degree of substitution (DS) value obtained was as high as 1.14, and the corresponding CDBS exhibited significantly higher zeta potential values: approximately +35 mV. The minimal inhibitory concentration values of the CDBS of DS 1.14 against Escherichia coli and Staphylococcus aureus were 6 and 8 mg mL-1, respectively. In addition, nanoparticles were successfully prepared with a combination of CDBS and low methoxyl pectin (LMP) and a combination of CDBS and κ-carrageenan (CRG). The maximum encapsulation efficiency of nanoparticles for (-)-epigallocatechingallate can reach 87.8%.
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Affiliation(s)
- Qing Liu
- College of Food Science and Engineering , Qingdao Agricultural University , Qingdao , Shandong Province 266109 , China
| | - Man Li
- College of Food Science and Engineering , Qingdao Agricultural University , Qingdao , Shandong Province 266109 , China
| | - Liu Xiong
- College of Food Science and Engineering , Qingdao Agricultural University , Qingdao , Shandong Province 266109 , China
| | - Lizhong Qiu
- Zhucheng Xingmao Corn Developing Co., Ltd , Weifang , Shandong Province 262200 , China
| | - Xiliang Bian
- Zhucheng Xingmao Corn Developing Co., Ltd , Weifang , Shandong Province 262200 , China
| | - Chunrui Sun
- Zhucheng Xingmao Corn Developing Co., Ltd , Weifang , Shandong Province 262200 , China
| | - Qingjie Sun
- College of Food Science and Engineering , Qingdao Agricultural University , Qingdao , Shandong Province 266109 , China
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10
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Qin Y, Xiong L, Li M, Liu J, Wu H, Qiu H, Mu H, Xu X, Sun Q. Preparation of Bioactive Polysaccharide Nanoparticles with Enhanced Radical Scavenging Activity and Antimicrobial Activity. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2018; 66:4373-4383. [PMID: 29648814 DOI: 10.1021/acs.jafc.8b00388] [Citation(s) in RCA: 62] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Because of their biocompatibility and biodegradability in vivo, natural polysaccharides are effective nanocarriers for delivery of active ingredients or drugs. Moreover, bioactive polysaccharides, such as tea, Ganoderma lucidum, and Momordica charantia polysaccharides (TP, GLP, and MCP), have antibacterial, antioxidant, antitumor, and antiviral properties. In this study, tea, Ganoderma lucidum, and Momordica charantia polysaccharide nanoparticles (TP-NPs, GLP-NPs, and MCP-NPs) were prepared via the nanoprecipitation approach. When the ethanol to water ratio was 10:1, the diameter of the spherical polysaccharide nanoparticles was the smallest, and the mean particle size of the TP-NPs, GLP-NPs, and MCP-NPs was 99 ± 15, 95 ± 7, and 141 ± 9 nm, respectively. When exposed to heat, increased ionic strength and pH levels, the nanoparticles exhibited superior stability and higher activity than the corresponding polysaccharides. In physiological conditions (pH 7.4), the nanoparticles underwent different protein adsorption capacities in the following order: MCP-NPs> TP-NPs> GLP-NPs. Moreover, the 2,2-diphenyl-1-picrylhydrazyl (DPPH), hydroxyl radical, and superoxide anion radical scavenging rates of the nanoparticles were increased by 9-25% as compared to the corresponding polysaccharides. Compared to the bioactive polysaccharides, the nanoparticles enhanced antimicrobial efficacy markedly and exhibited long-acting antibacterial activity.
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11
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Quiñones JP, Peniche H, Peniche C. Chitosan Based Self-Assembled Nanoparticles in Drug Delivery. Polymers (Basel) 2018; 10:polym10030235. [PMID: 30966270 PMCID: PMC6414940 DOI: 10.3390/polym10030235] [Citation(s) in RCA: 153] [Impact Index Per Article: 25.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2018] [Revised: 02/20/2018] [Accepted: 02/23/2018] [Indexed: 01/29/2023] Open
Abstract
Chitosan is a cationic polysaccharide that is usually obtained by alkaline deacetylation of chitin poly(N-acetylglucosamine). It is biocompatible, biodegradable, mucoadhesive, and non-toxic. These excellent biological properties make chitosan a good candidate for a platform in developing drug delivery systems having improved biodistribution, increased specificity and sensitivity, and reduced pharmacological toxicity. In particular, chitosan nanoparticles are found to be appropriate for non-invasive routes of drug administration: oral, nasal, pulmonary and ocular routes. These applications are facilitated by the absorption-enhancing effect of chitosan. Many procedures for obtaining chitosan nanoparticles have been proposed. Particularly, the introduction of hydrophobic moieties into chitosan molecules by grafting to generate a hydrophobic-hydrophilic balance promoting self-assembly is a current and appealing approach. The grafting agent can be a hydrophobic moiety forming micelles that can entrap lipophilic drugs or it can be the drug itself. Another suitable way to generate self-assembled chitosan nanoparticles is through the formation of polyelectrolyte complexes with polyanions. This paper reviews the main approaches for preparing chitosan nanoparticles by self-assembly through both procedures, and illustrates the state of the art of their application in drug delivery.
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Affiliation(s)
- Javier Pérez Quiñones
- Institute of Polymer Chemistry, Johannes Kepler University, Altenberger Strasse 69, 4040 Linz, Austria.
| | - Hazel Peniche
- Centro de Biomateriales, Universidad de La Habana, Ave. Universidad S/N entre G y Ronda, 10400 La Habana, Cuba.
| | - Carlos Peniche
- Facultad de Química, Universidad de La Habana, Zapata S/N entre G y Carlitos Aguirre, 10400 La Habana, Cuba.
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12
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Lalevée G, David L, Montembault A, Blanchard K, Meadows J, Malaise S, Crépet A, Grillo I, Morfin I, Delair T, Sudre G. Highly stretchable hydrogels from complex coacervation of natural polyelectrolytes. SOFT MATTER 2017; 13:6594-6605. [PMID: 28905969 DOI: 10.1039/c7sm01215b] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The controlled complex coacervation of oppositely charged hyaluronic acid (Mw ≈ 800-1000 kg mol-1) and chitosan (Mw ≈ 160 kg mol-1, degree of acetylation = 15%) led to hydrogels with controllable properties in terms of elasticity and strength. In this work, we performed desalting by dialysis of high ionic strength solutions of mixed polyelectrolytes and showed that the control of the pH during the polyelectrolyte assembly greatly impacts the mechanical properties of the hydrogel. First, for pHs from 5.5 to 7.5, a slight coacervation was observed due to low chitosan protonation and poor polyelectrolyte associations. Then, for pHs from 3.0 to 5.5, coacervation and syneresis led to free-standing and easy to handle hydrogels. Finally, for pHs from 2.0 to 3.0 (close to the pKa of the hyaluronic acid), we observed the unusual stretchability of these hydrogels that could arise from the pre-folding of hyaluronic acid chains while physical crosslinking was achieved by hyaluronic acid/chitosan polyelectrolyte complexation.
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Affiliation(s)
- Gautier Lalevée
- Ingénierie des Matériaux Polymères (IMP), Univ Lyon, Université Claude Bernard Lyon 1, CNRS UMR 5223, 15 Boulevard Latarjet, Villeurbanne, F-69622, France.
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13
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Wu D, Ensinas A, Verrier B, Cuvillier A, Champier G, Paul S, Delair T. Ternary polysaccharide complexes: Colloidal drug delivery systems stabilized in physiological media. Carbohydr Polym 2017; 172:265-274. [DOI: 10.1016/j.carbpol.2017.05.051] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2017] [Revised: 05/16/2017] [Accepted: 05/17/2017] [Indexed: 12/26/2022]
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14
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Abstract
Heparin is one of the oldest drugs, which nevertheless remains in widespread clinical use as an inhibitor of blood coagulation. The history of its identification a century ago unfolded amid one of the most fascinating scientific controversies turning around the distribution of credit for its discovery. The composition, purification and structure-function relationship of this naturally occurring glycosaminoglycan regarding its classical role as anticoagulant will be dealt with before proceeding to discuss its therapeutic potential in, among other, inflammatory and infectious disease, cancer treatment, cystic fibrosis and Alzheimer's disease. The first bibliographic reference hit using the words 'nanomedicine' and 'heparin' is as recent as 2008. Since then, nanomedical applications of heparin have experienced an exponential growth that will be discussed in detail, with particular emphasis on its antimalarial activity. Some of the most intriguing potential applications of heparin nanomedicines will be exposed, such as those contemplating the delivery of drugs to the mosquito stages of malaria parasites.
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Affiliation(s)
| | - Elena Lantero
- Nanomalaria Group, Institute for Bioengineering of Catalonia (IBEC), The Barcelona Institute of Science and Technology, Baldiri Reixac 10-12, ES-08028 Barcelona, Spain.,Barcelona Institute for Global Health (ISGlobal), Barcelona Center for International Health Research (CRESIB, Hospital Clínic-Universitat de Barcelona), Rosselló 149-153, ES-08036 Barcelona, Spain
| | - Xavier Fernàndez-Busquets
- Nanomalaria Group, Institute for Bioengineering of Catalonia (IBEC), The Barcelona Institute of Science and Technology, Baldiri Reixac 10-12, ES-08028 Barcelona, Spain.,Barcelona Institute for Global Health (ISGlobal), Barcelona Center for International Health Research (CRESIB, Hospital Clínic-Universitat de Barcelona), Rosselló 149-153, ES-08036 Barcelona, Spain.,Nanoscience & Nanotechnology Institute (IN2UB), University of Barcelona, Martí i Franquès 1, ES-08028 Barcelona, Spain
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15
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Preparation and characterization of dispersions based on chitosan and poly(styrene sulfonate). Colloid Polym Sci 2017. [DOI: 10.1007/s00396-017-4099-4] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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16
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Qiu C, Qin Y, Jiang S, Liu C, Xiong L, Sun Q. Preparation of active polysaccharide-loaded maltodextrin nanoparticles and their stability as a function of ionic strength and pH. Lebensm Wiss Technol 2017. [DOI: 10.1016/j.lwt.2016.10.053] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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17
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de Lima CRM, de Souza PRS, Stopilha RT, de Morais WA, Silva GTM, Nunes JS, Wanderley Neto AO, Pereira MR, Fonseca JLC. Formation and structure of chitosan–poly(sodium methacrylate) complex nanoparticles. J DISPER SCI TECHNOL 2017. [DOI: 10.1080/01932691.2017.1296772] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- C. R. M. de Lima
- Instituto de Química, Universidade Federal do Rio Grande do Norte, Campus Universitário, Lagoa Nova, Natal, RN, Brazil
| | - P. R. S. de Souza
- Instituto de Química, Universidade Federal do Rio Grande do Norte, Campus Universitário, Lagoa Nova, Natal, RN, Brazil
| | - R. T. Stopilha
- Instituto de Química, Universidade Federal do Rio Grande do Norte, Campus Universitário, Lagoa Nova, Natal, RN, Brazil
| | - W. A. de Morais
- Instituto de Química, Universidade Federal do Rio Grande do Norte, Campus Universitário, Lagoa Nova, Natal, RN, Brazil
| | - G. T. M. Silva
- Instituto de Química, Universidade Federal do Rio Grande do Norte, Campus Universitário, Lagoa Nova, Natal, RN, Brazil
| | - J. S. Nunes
- Instituto de Química, Universidade Federal do Rio Grande do Norte, Campus Universitário, Lagoa Nova, Natal, RN, Brazil
| | - A. O. Wanderley Neto
- Instituto de Química, Universidade Federal do Rio Grande do Norte, Campus Universitário, Lagoa Nova, Natal, RN, Brazil
| | - M. R. Pereira
- Instituto de Química, Universidade Federal do Rio Grande do Norte, Campus Universitário, Lagoa Nova, Natal, RN, Brazil
| | - J. L. C. Fonseca
- Instituto de Química, Universidade Federal do Rio Grande do Norte, Campus Universitário, Lagoa Nova, Natal, RN, Brazil
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18
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Lalevée G, Sudre G, Montembault A, Meadows J, Malaise S, Crépet A, David L, Delair T. Polyelectrolyte complexes via desalting mixtures of hyaluronic acid and chitosan—Physicochemical study and structural analysis. Carbohydr Polym 2016; 154:86-95. [DOI: 10.1016/j.carbpol.2016.08.007] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2016] [Revised: 07/20/2016] [Accepted: 08/03/2016] [Indexed: 12/22/2022]
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Wu D, Ensinas A, Verrier B, Primard C, Cuvillier A, Champier G, Paul S, Delair T. Zinc-Stabilized Chitosan-Chondroitin Sulfate Nanocomplexes for HIV-1 Infection Inhibition Application. Mol Pharm 2016; 13:3279-91. [PMID: 27454202 DOI: 10.1021/acs.molpharmaceut.6b00568] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Polyelectrolyte complexes (PECs) constituted of chitosan and chondroitin sulfate (ChonS) were formed by the one-shot addition of default amounts of polyanion to an excess of polycation. Key variables of the formulation process (e.g., degree of depolymerization, charge mixing ratio, the concentration, and pH of polyelectrolyte solutions) were optimized based on the PECs sizes and polydispersities. The PECs maintained their colloidal stability at physiological salt concentration and pH thanks to the complexation of polyelectrolytes with zinc(II) ion during the nanoPECs formation process. The PECs were capable of encapsulating an antiretroviral drug tenofovir (TF) with a minimal alteration on the colloidal stability of the dispersion. Moreover, the particle interfaces could efficiently be functionalized with anti-OVA or anti-α4β7 antibodies with conservation of the antibody biorecognition properties over 1 week of storage in PBS at 4 °C. In vitro cytotoxicity studies showed that zinc(II) stabilized chitosan-ChonS nanoPECs were noncytotoxic to human peripheral blood mononuclear cells (PBMCs), and in vitro antiviral activity test demonstrated that nanoparticles formulations led to a dose-dependent reduction of HIV-1 infection. Using nanoparticles as a drug carrier system decreases the IC50 (50% inhibitory concentration) from an aqueous TF of 4.35 μmol·L(-1) to 1.95 μmol·L(-1). Significantly, zinc ions in this system also exhibited a synergistic effect in the antiviral potency. These data suggest that chitosan-ChonS nanoPECs can be promising drug delivery system to improve the antiviral potency of drugs to the viral reservoirs for the treatment of HIV infection.
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Affiliation(s)
- Danjun Wu
- Ingénierie des Matériaux Polymères, UMR CNRS 5223, Université Claude Bernard Lyon 1 , 15 Bd. André Latarjet, 69622 Villeurbanne Cedex, France
| | - Agathe Ensinas
- Institut de Biologie et Chimie des Protéines UMR 5305, CNRS/Université de Lyon , 69367 Lyon Cedex 07, France
| | - Bernard Verrier
- Institut de Biologie et Chimie des Protéines UMR 5305, CNRS/Université de Lyon , 69367 Lyon Cedex 07, France
| | | | | | - Gaël Champier
- B-Cell Design , 98 Rue Charles Legendre, 87000 Limoges, France
| | - Stephane Paul
- Groupe Immunité des Muqueuses et Agents Pathogènes, INSERM Centre d'Investigation Clinique en Vaccinologie 1408, Université de Lyon , 15 rue Ambroise Paré, 42023 Saint-Etienne Cedex 2, France
| | - Thierry Delair
- Ingénierie des Matériaux Polymères, UMR CNRS 5223, Université Claude Bernard Lyon 1 , 15 Bd. André Latarjet, 69622 Villeurbanne Cedex, France
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20
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Dewhurst CD, Grillo I. Neutron imaging using a conventional small-angle neutron scattering instrument. J Appl Crystallogr 2016. [DOI: 10.1107/s1600576716003940] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023] Open
Abstract
Neutron imaging has enjoyed a flurry of activity and application in recent years. The construction of dedicated beamlines at various neutron sources has demonstrated the significant interest among the science and engineering communities, with particular relevance to industrial applications, the nondestructive testing of components and imaging of precious archaeological artefacts. Here two methods are demonstrated of how neutron imaging can be performed using a conventional small-angle neutron scattering (SANS) instrument, such as D33 at the Institut Laue–Langevin, with spatial resolutions down to about 100 µm. The first is a magnified imaging technique from a quasi-point-like source with the magnified image recorded on the usual low-resolution SANS detector. The second method uses a fine beam in a raster-scan measurement over the area of interest. Images can be reconstructed either using the transmitted beam, as in conventional radiographic imaging, or from scattering data, giving access to transmission radiographic images as well as the dark-field or scattering contrasts and phase-contrast images.
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Kulkarni AD, Vanjari YH, Sancheti KH, Patel HM, Belgamwar VS, Surana SJ, Pardeshi CV. Polyelectrolyte complexes: mechanisms, critical experimental aspects, and applications. ARTIFICIAL CELLS NANOMEDICINE AND BIOTECHNOLOGY 2016; 44:1615-25. [DOI: 10.3109/21691401.2015.1129624] [Citation(s) in RCA: 72] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Wu D, Ensinas A, Verrier B, Primard C, Cuvillier A, Champier G, Paul S, Delair T. Zinc-stabilized colloidal polyelectrolyte complexes of chitosan/hyaluronan: a tool for the inhibition of HIV-1 infection. J Mater Chem B 2016; 4:5455-5463. [DOI: 10.1039/c6tb00898d] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Zinc(ii) stabilized polyelectrolyte nano-complexes (PECs) of chitosan and hyaluronan (HYA) were designed as safe and efficient drug delivery systems.
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Affiliation(s)
- Danjun Wu
- Ingénierie des Matériaux Polymères
- UMR CNRS 5223
- 69622 Villeurbanne Cedex
- France
| | - Agathe Ensinas
- Institut de Biologie et Chimie des Protéines UMR 5305
- CNRS/Université de Lyon
- France
| | - Bernard Verrier
- Institut de Biologie et Chimie des Protéines UMR 5305
- CNRS/Université de Lyon
- France
| | | | | | | | - Stephane Paul
- Groupe Immunité des Muqueuses et Agents Pathogènes
- INSERM Centre d'Investigation Clinique en Vaccinologie 1408
- Université de Lyon
- 42023 Saint-Etienne Cedex 2
- France
| | - Thierry Delair
- Ingénierie des Matériaux Polymères
- UMR CNRS 5223
- 69622 Villeurbanne Cedex
- France
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Cevher E, Salomon SK, Makrakis A, Li XW, Brocchini S, Alpar HO. Development of chitosan–pullulan composite nanoparticles for nasal delivery of vaccines: optimisation and cellular studies. J Microencapsul 2015; 32:755-68. [DOI: 10.3109/02652048.2015.1073392] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Macro-hydrogels versus nanoparticles by the controlled assembly of polysaccharides. Carbohydr Polym 2015; 134:541-6. [PMID: 26428156 DOI: 10.1016/j.carbpol.2015.07.071] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2015] [Revised: 07/17/2015] [Accepted: 07/21/2015] [Indexed: 11/20/2022]
Abstract
The controlled assembly of oppositely charged chitosan (CS, Mw ∼ 33 × 10(3) to 600 × 10(3)g mol(-1)) and dextran sulfate (DS, Mw = 1.3 × 10(6)g mol(-1)) or heparin (HP, Mw = 1.8 × 10(4)g mol(-1)) led either to nanoparticles or macro-hydrogels, at room temperature. The control over the electrostatic attractive interactions was achieved using 2 mol L(-1) NaCl in the polyion solutions and subsequent dialysis to let the assembly occur. Macrohydrogels formed with an excess of polyanion. In the presence of an excess of polycation, colloidal gels were exclusively obtained. At salt concentrations lower than 1 mol L(-1), the spontaneous gelation provided macro-hydrogels, whatever the polyion in excess. Rheology measurements showed a similar elastic behaviour for CS-DS and CS-HP hydrogels, though CS-HP hydrogels appeared less cohesive. SAXS experiments revealed an aggregate morphology with internal and surface structure depending on the degree of acetylation (DA) of chitosan.
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