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Mathews PD, Gama GS, Megiati HM, Madrid RRM, Garcia BBM, Han SW, Itri R, Mertins O. Flavonoid-Labeled Biopolymer in the Structure of Lipid Membranes to Improve the Applicability of Antioxidant Nanovesicles. Pharmaceutics 2024; 16:141. [PMID: 38276511 PMCID: PMC10819309 DOI: 10.3390/pharmaceutics16010141] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2023] [Revised: 01/15/2024] [Accepted: 01/17/2024] [Indexed: 01/27/2024] Open
Abstract
Nanovesicles produced with lipids and polymers are promising devices for drug and bioactive delivery and are of great interest in pharmaceutical applications. These nanovesicles can be engineered for improvement in bioavailability, patient compliance or to provide modified release or enhanced delivery. However, their applicability strongly depends on the safety and low immunogenicity of the components. Despite this, the use of unsaturated lipids in nanovesicles, which degrade following oxidation processes during storage and especially during the proper routes of administration in the human body, may yield toxic degradation products. In this study, we used a biopolymer (chitosan) labeled with flavonoid (catechin) as a component over a lipid bilayer for micro- and nanovesicles and characterized the structure of these vesicles in oxidation media. The purpose of this was to evaluate the in situ effect of the antioxidant in three different vesicular systems of medium, low and high membrane curvature. Liposomes and giant vesicles were produced with the phospholipids DOPC and POPC, and crystalline cubic phase with monoolein/DOPC. Concentrations of chitosan-catechin (CHCa) were included in all the vesicles and they were challenged in oxidant media. The cytotoxicity analysis using the MTT assay (3-(4,5-dimethyl-2-thiazolyl)-2,5-diphenyl-2H-tetrazolium bromide) revealed that concentrations of CHCa below 6.67 µM are non-toxic to HeLa cells. The size and zeta potential of the liposomes evidenced the degradation of their structures, which was minimized by CHCa. Similarly, the membrane of the giant vesicle, which rapidly deteriorated in oxidative solution, was protected in the presence of CHCa. The production of a lipid/CHCa composite cubic phase revealed a specific cubic topology in small-angle X-ray scattering, which was preserved in strong oxidative media. This study demonstrates the specific physicochemical characteristics introduced in the vesicular systems related to the antioxidant CHCa biopolymer, representing a platform for the improvement of composite nanovesicle applicability.
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Affiliation(s)
- Patrick D. Mathews
- Laboratory of Nano Bio Materials (LNBM), Department of Biophysics, Paulista Medical School, Federal University of Sao Paulo, Sao Paulo 04023-062, Brazil; (P.D.M.); (G.S.G.); (H.M.M.); (R.R.M.M.)
- Institute of Biosciences, Sao Paulo State University, Botucatu 18618-689, Brazil
| | - Gabriella S. Gama
- Laboratory of Nano Bio Materials (LNBM), Department of Biophysics, Paulista Medical School, Federal University of Sao Paulo, Sao Paulo 04023-062, Brazil; (P.D.M.); (G.S.G.); (H.M.M.); (R.R.M.M.)
| | - Hector M. Megiati
- Laboratory of Nano Bio Materials (LNBM), Department of Biophysics, Paulista Medical School, Federal University of Sao Paulo, Sao Paulo 04023-062, Brazil; (P.D.M.); (G.S.G.); (H.M.M.); (R.R.M.M.)
| | - Rafael R. M. Madrid
- Laboratory of Nano Bio Materials (LNBM), Department of Biophysics, Paulista Medical School, Federal University of Sao Paulo, Sao Paulo 04023-062, Brazil; (P.D.M.); (G.S.G.); (H.M.M.); (R.R.M.M.)
| | - Bianca B. M. Garcia
- Interdisciplinary Center for Gene Therapy, Paulista Medical School, Federal University of Sao Paulo, Sao Paulo 04023-062, Brazil; (B.B.M.G.); (S.W.H.)
| | - Sang W. Han
- Interdisciplinary Center for Gene Therapy, Paulista Medical School, Federal University of Sao Paulo, Sao Paulo 04023-062, Brazil; (B.B.M.G.); (S.W.H.)
| | - Rosangela Itri
- Applied Physics Department, Institute of Physics, University of Sao Paulo, Sao Paulo 05508-900, Brazil;
| | - Omar Mertins
- Laboratory of Nano Bio Materials (LNBM), Department of Biophysics, Paulista Medical School, Federal University of Sao Paulo, Sao Paulo 04023-062, Brazil; (P.D.M.); (G.S.G.); (H.M.M.); (R.R.M.M.)
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Sanches SCDC, Ré MI, Silva-Júnior JOC, Ribeiro-Costa RM. Organogel of Acai Oil in Cosmetics: Microstructure, Stability, Rheology and Mechanical Properties. Gels 2023; 9:gels9020150. [PMID: 36826320 PMCID: PMC9956281 DOI: 10.3390/gels9020150] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2022] [Revised: 12/07/2022] [Accepted: 12/11/2022] [Indexed: 02/16/2023] Open
Abstract
Organogel (OG) is a semi-solid material composed of gelling molecules organized in the presence of an appropriate organic solvent, through physical or chemical interactions, in a continuous net. This investigation aimed at preparing and characterizing an organogel from acai oil with hyaluronic acid (HA) structured by 12-hydroxystearic acid (12-HSA), aiming at topical anti-aging application. Organogels containing or not containing HA were analyzed by Fourier-transform Infrared Spectroscopy, polarized light optical microscopy, thermal analysis, texture analysis, rheology, HA quantification and oxidative stability. The organogel containing hyaluronic acid (OG + HA) has a spherulitic texture morphology with a net-like structure and absorption bands that evidenced the presence of HA in the three-dimensional net of organogel. The thermal analysis confirmed the gelation and the insertion of HA, as well as a good thermal stability, which is also confirmed by the study of oxidative stability carried out under different temperature conditions for 90 days. The texture and rheology studies indicated a viscoelastic behavior. HA quantification shows the efficiency of the HA cross-linking process in the three-dimensional net of organogel with 11.22 µg/mL for cross-linked HA. Thus, it is concluded that OG + HA shows potentially promising physicochemical characteristics for the development of a cosmetic system.
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Affiliation(s)
| | - Maria Inês Ré
- IMT Mines Albi-Carmaux, CNRS UMR 5302, Centre RAPSODEE, Campus Jarlard, Université de Toulouse, CEDEX 09, 81013 Albi, France
| | - José Otávio Carréra Silva-Júnior
- Laboratory R&D Pharmaceutical and Cosmetic, Faculty of Pharmaceutical Sciences, Federal University of Pará, Belém 66075-110, Brazil
| | - Roseane Maria Ribeiro-Costa
- Laboratory of Pharmaceutical Nanotechnology, College of Pharmacy, Federal University of Pará, Belém 66075-110, Brazil
- Correspondence: ; Tel.: +55-91-3201-7203
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Mathews PD, Mertins O, Angelov B, Angelova A. Cubosomal lipid nanoassemblies with pH-sensitive shells created by biopolymer complexes: A synchrotron SAXS study. J Colloid Interface Sci 2021; 607:440-450. [PMID: 34509118 DOI: 10.1016/j.jcis.2021.08.187] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Revised: 08/19/2021] [Accepted: 08/28/2021] [Indexed: 12/19/2022]
Abstract
We report a strategy for sustainable development of pH-responsive cubic liquid crystalline nanoparticles (cubosomes), in which the structure-defining lyotropic nonlamellar lipid and the eventually encapsulated guest molecules can be protected by pH-sensitive polyelectrolyte shells with mucoadhesive properties. Bulk non-lamellar phases as well as pH-responsive polyelectrolyte-modified nanocarriers were formed by spontaneous assembly of the nonlamellar lipid monoolein and two biopolymers tailored in nanocomplexes with pH-dependent net charge. The mesophase particles involved positively charged N-arginine-modified chitosan (CHarg) and negatively charged alginate (ALG) chains assembled at different biopolymer concentrations and charge ratios into a series of pH-responsive complexes. The roles of Pluronic F127 as a dispersing agent and a stabilizer of the nanoscale dispersions were examined. Synchrotron small-angle X-ray scattering (SAXS) investigations were performed at several N-arginine-modified chitosan/alginate ratios (CHarg/ALG with 10, 15 and 20 wt% ALG relative to CHarg) and varying pH values mimicking the pH conditions of the gastrointestinal route. The structural parameters characterizing the inner cubic liquid crystalline organizations of the nanocarriers were determined as well as the particle sizes and stability on storage. The surface charge variations, influencing the measured zeta-potentials, evidenced the inclusion of the CHarg/ALG biopolymer complexes into the lipid nanoassemblies. The polyelectrolyte shells rendered the hybrid cubosome nanocarriers pH-sensitive and influenced the swelling of their lipid-phase core as revealed by the acquired SAXS patterns. The pH-responsiveness and the mucoadhesive features of the cubosomal lipid/polyelectrolyte nanocomplexes may be of interest for in vivo drug delivery applications.
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Affiliation(s)
- Patrick D Mathews
- Laboratory of Nano Bio Materials (LNBM), Department of Biophysics, Paulista Medical School, Federal University of Sao Paulo (UNIFESP), 04023-062 Sao Paulo, Brazil
| | - Omar Mertins
- Laboratory of Nano Bio Materials (LNBM), Department of Biophysics, Paulista Medical School, Federal University of Sao Paulo (UNIFESP), 04023-062 Sao Paulo, Brazil; Institut Galien Paris-Saclay UMR8612, Université Paris-Saclay, CNRS, F-92296 Châtenay-Malabry, France.
| | - Borislav Angelov
- Institute of Physics, ELI Beamlines, Academy of Sciences of the Czech Republic, CZ-18221 Prague, Czech Republic
| | - Angelina Angelova
- Institut Galien Paris-Saclay UMR8612, Université Paris-Saclay, CNRS, F-92296 Châtenay-Malabry, France.
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Mertins O, Lobo SE, Mathews PD, Han SW. Interaction of pDNA with reverse phase chitosome. Colloids Surf A Physicochem Eng Asp 2018. [DOI: 10.1016/j.colsurfa.2018.02.005] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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Picheth GF, Pirich CL, Dos Santos LA, Camarozano AC, Sierakowski MR, Ocampos FM, Barison A, Kaminski GA, Pontarolo R, de Freitas RA. Chitosan-coated microvesicles: Effect of polysaccharide-phospholipid affinity on decafluorobutane dissolution. Carbohydr Polym 2016; 153:169-175. [PMID: 27561484 DOI: 10.1016/j.carbpol.2016.07.099] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2016] [Revised: 07/20/2016] [Accepted: 07/23/2016] [Indexed: 10/21/2022]
Abstract
The stability of perfluorinated microvesicles is mainly determined by the presence of interfacial materials and their ability to hinder the gas component diffusibility into the bloodstream. The goal of this study is to increase the persistence of the gaseous-core by introducing chitosan-coated 1,2-distearoyl-sn-glycero-3-phosphocholine (DSPC) microvesicles, reducing gas diffusion from microvesicles, and increasing for a long time ultrasonic signals. Our hypothesis was based on the irreversible adhesion of chitosan towards DSPC head groups observed in thin-films models. This affinity enhanced the stabilization of gaseous-core microvesicles, in which the polysaccharide effectively reduced the phospholipid phase transition enthalpy from 383±5.5Jmg(-1) for plain to 150±9.7Jmg(-1) for chitosan-coated microvesicles, providing a more stable structure that diminished the gaseous component lost and provided the persistence of intense (19)F-NMR signals after 48h, twice as long compared to plain samples. As a result, stronger and long-lasting ultrasonic signals were produced by the more stable chitosan-containing microvesicles, thus, presenting great potential to increase the diagnostic and therapeutic applications of perfluorocarbon carries.
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Affiliation(s)
- Guilherme F Picheth
- Biopol, Chemistry Department, Federal University of Paraná, 81531-980 Curitiba, PR, Brazil; CEB, Pharmacy Department, Federal University of Paraná, 80210-170 Curitiba, PR, Brazil
| | - Cleverton L Pirich
- Biopol, Chemistry Department, Federal University of Paraná, 81531-980 Curitiba, PR, Brazil
| | - Larissa A Dos Santos
- Biopol, Chemistry Department, Federal University of Paraná, 81531-980 Curitiba, PR, Brazil
| | - Ana C Camarozano
- Medicine Department, Federal University of Paraná, 80060-240 Curitiba, PR, Brazil
| | - Maria Rita Sierakowski
- Biopol, Chemistry Department, Federal University of Paraná, 81531-980 Curitiba, PR, Brazil
| | - Fernanda M Ocampos
- NMR center, Federal University of Paraná, 81531-980 Curitiba, PR, Brazil
| | - Andersson Barison
- NMR center, Federal University of Paraná, 81531-980 Curitiba, PR, Brazil
| | - Gabriel A Kaminski
- Biopol, Chemistry Department, Federal University of Paraná, 81531-980 Curitiba, PR, Brazil; CEB, Pharmacy Department, Federal University of Paraná, 80210-170 Curitiba, PR, Brazil
| | - Roberto Pontarolo
- CEB, Pharmacy Department, Federal University of Paraná, 80210-170 Curitiba, PR, Brazil
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Mathews PD, Mertins O. Dispersion of chitosan in liquid crystalline lamellar phase: Production of biofriendly hydrogel of nano cubic topology. Carbohydr Polym 2016; 157:850-857. [PMID: 27987999 DOI: 10.1016/j.carbpol.2016.10.071] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2016] [Revised: 09/28/2016] [Accepted: 10/23/2016] [Indexed: 02/04/2023]
Abstract
Bicontinuous cubic phases were produced with introduction of chitosan in phospholipid/water hydrogel, providing composites of defined molecular organization. The ratio of lipid/water was constant and swelling of lipids bilayer is delimited by incorporation of polymer molecules into the structure. By means of synchrotron small angle X-ray scattering we identified topologies of coexisting cubic phases. The expected liquid crystalline Lα lamellar phase was suppressed by 0.2wt% chitosan leading to formation of diamond Pn3m and gyroid Ia3d cubic topology, with close lattice distances. An increment to 0.4wt% chitosan caused large increase in Pn3m lattice distance. However a higher 0.6wt% evolved this phase to a newly acquired primitive Im3m topology. The structuring process of the three-dimensional complex network is principally governed by demands of chitosan physical requirements over lipids bilayers interfacial curvature. The composite hydrogel of specific topologies presents reduced time release of gallic acid and may find application as new material for time-sustained delivery of bioactive compounds.
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Affiliation(s)
- Patrick D Mathews
- Department of Animal Biology, Institute of Biology, State University of Campinas, 13083-970 Campinas, Brazil.
| | - Omar Mertins
- Department of Biophysics, Paulista School of Medicine, Federal University of Sao Paulo, 04023-062 Sao Paulo, Brazil.
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Ağardan NBM, Değim Z, Yılmaz Ş, Altıntaş L, Topal T. The Effectiveness of Raloxifene-Loaded Liposomes and Cochleates in Breast Cancer Therapy. AAPS PharmSciTech 2016; 17:968-77. [PMID: 26729527 DOI: 10.1208/s12249-015-0429-3] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2015] [Accepted: 10/04/2015] [Indexed: 11/30/2022] Open
Abstract
Liposome (spherical vesicles) and cochleate (multilayer crystalline, spiral structure) formulations containing raloxifene have been developed having dimethyl-β-cyclodextrin (DM-β-CD) or sodium taurocholate (NaTC). Raloxifene was approved initially for the treatment of osteoporosis but it is also effective on breast tissue and endometrial cells. Raloxifene inhibits matrix metalloproteinase-2 (MMP-2) enzyme, which is known to be responsible for tumor invasion and the initiation of angiogenesis during the tumor growth. Therefore, raloxifene was selected as a model drug. A series of raloxifene-loaded liposome and cochleate formulations were prepared. In vitro release studies and in vivo tests were performed. Breast cancer cell lines (MCF-7) were also used to find the most effective formulation. Highest antitumor activity was observed, and MMP-2 enzyme was also found to be inhibited with raloxifene-loaded cochleates containing DM-β-CD. These developed formulations can be helpful for further treatment alternatives and new strategies for cancer therapy.
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Decoration of gemini alkyl O-glucosides based vesicles by electrostatic deposition of sodium carboxymethyl cellullose: Mechanism, structure and improved stability. Food Hydrocoll 2016. [DOI: 10.1016/j.foodhyd.2016.03.012] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Characterization of temperature induced changes in liposomes coated with poly( N -isopropylacrylamide- co -methacrylic acid). J Colloid Interface Sci 2015; 450:7-16. [DOI: 10.1016/j.jcis.2015.03.005] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2014] [Revised: 03/03/2015] [Accepted: 03/04/2015] [Indexed: 02/02/2023]
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Mertins O, Mathews PD, Gomide AB, Baptista MS, Itri R. Effective protection of biological membranes against photo-oxidative damage: Polymeric antioxidant forming a protecting shield over the membrane. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2015; 1848:2180-7. [PMID: 26055894 DOI: 10.1016/j.bbamem.2015.06.005] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/27/2015] [Revised: 06/02/2015] [Accepted: 06/03/2015] [Indexed: 01/15/2023]
Abstract
We have prepared a chitosan polymer modified with gallic acid in order to develop an efficient protection strategy biological membranes against photodamage. Lipid bilayers were challenged with photoinduced damage by photosensitization with methylene blue, which usually causes formation of hydroperoxides, increasing area per lipid, and afterwards allowing leakage of internal materials. The damage was delayed by a solution of gallic acid in a concentration dependent manner, but further suppressed by the polymer at very low concentrations. The membrane of giant unilamellar vesicles was covered with this modified macromolecule leading to a powerful shield against singlet oxygen and thus effectively protecting the lipid membrane from oxidative stress. The results have proven the discovery of a promising strategy for photo protection of biological membranes.
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Affiliation(s)
- Omar Mertins
- Department of Biophysics, Escola Paulista de Medicina, Universidade Federal de São Paulo, Rua Botucatu 862, 04023-062 São Paulo, Brazil; Applied Physics Department, Institute of Physics, University of São Paulo, Rua do Matão, Travessa R 187, 05508-900 São Paulo, Brazil.
| | - Patrick D Mathews
- Department of Biophysics, Escola Paulista de Medicina, Universidade Federal de São Paulo, Rua Botucatu 862, 04023-062 São Paulo, Brazil
| | - Andreza B Gomide
- Applied Physics Department, Institute of Physics, University of São Paulo, Rua do Matão, Travessa R 187, 05508-900 São Paulo, Brazil
| | - Mauricio S Baptista
- Department of Biochemistry, Institute of Chemistry, University of São Paulo, Avenida Prof. Lineu Prestes 748, 05508-900 São Paulo, Brazil
| | - Rosangela Itri
- Applied Physics Department, Institute of Physics, University of São Paulo, Rua do Matão, Travessa R 187, 05508-900 São Paulo, Brazil.
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Chiappisi L, Gradzielski M. Co-assembly in chitosan-surfactant mixtures: thermodynamics, structures, interfacial properties and applications. Adv Colloid Interface Sci 2015; 220:92-107. [PMID: 25865361 DOI: 10.1016/j.cis.2015.03.003] [Citation(s) in RCA: 68] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2014] [Revised: 03/23/2015] [Accepted: 03/23/2015] [Indexed: 01/23/2023]
Abstract
In this review, different aspects characterizing chitosan-surfactant mixtures are summarized and compared. Chitosan is a bioderived cationic polysaccharide that finds wide-ranged applications in various field, e.g., medical or food industry, in which synergistic effects with surfactant can play a fundamental role. In particular, the behavior of chitosan interacting with strong and weak anionic, nonionic as well as cationic surfactants is reviewed. We put a focus on oppositely charged systems, as they exhibit the most interesting features. In that context, we discuss the thermodynamic description of the interaction and in particular the structural changes as they occur as a function of the mixed systems and external parameters. Moreover, peculiar properties of chitosan coated phospholipid vesicles are summarized. Finally, their co-assembly at interfaces is briefly reviewed. Despite the behavior of the mentioned systems might strongly differ, resulting in a high variety of properties, few general rules can be pointed out which improve the understanding of such complex systems.
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Whey protein coating increases bilayer rigidity and stability of liposomes in food-like matrices. Food Chem 2015; 173:1090-9. [DOI: 10.1016/j.foodchem.2014.10.076] [Citation(s) in RCA: 66] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2014] [Revised: 09/29/2014] [Accepted: 10/15/2014] [Indexed: 11/17/2022]
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Micheletto YMS, da Silveira NP, Barboza DM, dos Santos MC, de Lima VR, Giacomelli FC, Martinez JCV, Frizon TEA, Bó AGD. Investigation of self-association between new glycosurfactant N -acetyl-β- d -glucosaminyl-PEG-docosanate and soybean phosphatidylcholine into vesicles. Colloids Surf A Physicochem Eng Asp 2015. [DOI: 10.1016/j.colsurfa.2014.11.052] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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Mertins O, Dimova R. Insights on the interactions of chitosan with phospholipid vesicles. Part I: Effect of polymer deprotonation. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2013; 29:14545-14551. [PMID: 24168397 DOI: 10.1021/la403218c] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Interactions between the polysaccharide chitosan and negatively charged phospholipid liposomes were studied as a function of compositional and environmental conditions. Using isothermal titration calorimetry, different levels of deprotonation of chitosan in acidic solutions were attained with titration of the fully protonated polymer at pH 4.48 into solutions with increasing pH. The process was found to be highly endothermic. We then examined the interaction of the polymer with vesicles in solutions of different pH. Even when partially deprotonated, the chitosan chains retain their affinity to the negatively charged liposomes. However, the stronger adsorption results in lower organization of the chains over the membrane.
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Affiliation(s)
- Omar Mertins
- Department of Theory and Bio-Systems, Max Planck Institute of Colloids and Interfaces , Science Park Golm, 14424 Potsdam, Germany
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Mertins O, Dimova R. Insights on the interactions of chitosan with phospholipid vesicles. Part II: Membrane stiffening and pore formation. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2013; 29:14552-14559. [PMID: 24168435 DOI: 10.1021/la4032199] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
The interactions between the polysaccharide chitosan and phospholipids are studied using giant unilamellar vesicles (GUVs). We explore both bare GUVs incubated in chitosan solution post vesicle formation and GUVs prepared using a reverse-phase method where the polymer is adsorbed on both sides of the membrane leaflet. The fluctuations of the vesicle membrane are significantly reduced in the presence of chitosan as characterized by the bending rigidity, which increases with chitosan concentration denoting physical restrictions imposed to the bilayer as a consequence of the interaction with the polysaccharide. In the absence of chitosan, the rigidity of the bare phosphatidylcholine vesicles is also observed to increase (about 3-fold) upon the incorporation of a small fraction (10 mol %) of phosphatidylglycerol. Pore formation caused by chitosan is evidenced by loss of optical contrast of the giant vesicles denoting exchange between internal and external solutions through the pores. Our study provides evidence for the potential of chitosan to affect the bilayer permeability and to disrupt negatively charged membranes as well as to promote adhesiveness of vesicles on glass surfaces.
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Affiliation(s)
- Omar Mertins
- Department of Theory and Bio-Systems, Max Planck Institute of Colloids and Interfaces , Science Park Golm, 14424 Potsdam, Germany
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Lionzo MIZ, Muniz EC, da Silveira NP. The influence of chondroitin sulfate on composite multilamellar liposomes containing chitosan. Colloid Polym Sci 2013. [DOI: 10.1007/s00396-012-2828-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Xu X, Costa A, Burgess DJ. Protein Encapsulation in Unilamellar Liposomes: High Encapsulation Efficiency and A Novel Technique to Assess Lipid-Protein Interaction. Pharm Res 2012; 29:1919-31. [DOI: 10.1007/s11095-012-0720-x] [Citation(s) in RCA: 71] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2012] [Accepted: 02/22/2012] [Indexed: 11/30/2022]
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Alves FR, Loh W. Vesicles prepared with the complex salts dioctadecyldimethylammonium polyacrylates. J Colloid Interface Sci 2012; 368:292-300. [DOI: 10.1016/j.jcis.2011.11.020] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2011] [Revised: 11/09/2011] [Accepted: 11/09/2011] [Indexed: 11/25/2022]
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Nervo R, Konovalov O, Rinaudo M. Chitosan-Behenic Acid Monolayer Interaction at the Air-Water Interface: Characterization of the Adsorbed Polymer Layers by X-Ray Reflectivity. INTERNATIONAL JOURNAL OF POLYMER ANALYSIS AND CHARACTERIZATION 2012. [DOI: 10.1080/1023666x.2011.628780] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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Mertins O, Dimova R. Binding of chitosan to phospholipid vesicles studied with isothermal titration calorimetry. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2011; 27:5506-5515. [PMID: 21466162 DOI: 10.1021/la200553t] [Citation(s) in RCA: 85] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
We thermodynamically characterize the interaction of chitosan with small liposomes and the binding and organization of the polysaccharide on the membrane of the vesicles. By means of isothermal titration calorimetry (ITC), we obtain the enthalpy variations arising from binding of the positively ionized chitosan to neutral and negatively charged liposomes. The strong electrostatic interaction of the polysaccharide with the negative charges at the membrane gives rise to highly exothermic signal until charge compensation is reached. The equilibrium constant, the interaction stoichiometry, and the molar enthalpy of binding chitosan monomers to phospholipids from the external leaflet of the vesicle membrane are obtained from the isotherm curve fitting assuming independent binding sites. The strong exothermic signal indicates that the electrostatically driven binding of chitosan to the membrane is energetically favored, leading to further stabilization of the vesicle suspension. The higher the net negative charge of the vesicles, the more pronounced the adsorption of chitosan is, leading to weaker chain organization of the adsorbed chitosan at the membrane. At the point of charge saturation, vesicle aggregation takes place and we show that this behavior does not always lead to charge reversal at the membrane. Models for the binding behavior and structural organization of chitosan are proposed based on the experimental results from ITC, ζ-potential, and dynamic light scattering.
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Affiliation(s)
- Omar Mertins
- Department of Theory and Bio-Systems, Max Planck Institute of Colloids and Interfaces, Science Park Golm, 14424 Potsdam, Germany.
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Chitosan–bovine serum albumin complex formation: A model to design an enzyme isolation method by polyelectrolyte precipitation. J Chromatogr B Analyt Technol Biomed Life Sci 2010; 878:1543-8. [DOI: 10.1016/j.jchromb.2010.04.008] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2009] [Revised: 04/06/2010] [Accepted: 04/11/2010] [Indexed: 11/19/2022]
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23
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Mertins O, Schneider PH, Pohlmann AR, da Silveira NP. Interaction between phospholipids bilayer and chitosan in liposomes investigated by 31P NMR spectroscopy. Colloids Surf B Biointerfaces 2010; 75:294-9. [DOI: 10.1016/j.colsurfb.2009.08.048] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2009] [Revised: 08/22/2009] [Accepted: 08/28/2009] [Indexed: 10/20/2022]
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