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Rosilio V. How Can Artificial Lipid Models Mimic the Complexity of Molecule–Membrane Interactions? ACTA ACUST UNITED AC 2018. [DOI: 10.1016/bs.abl.2017.12.004] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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Morone N, Ueda T, Tsudo Y, Okumura Y, Rosilio V, Baszkin A, Sunamoto J. Surface Pressure Analysis of Poly(ethylene oxide)-Modified Fusogenic Liposomes Incorporated into a Phospholipid Monolayer. J BIOACT COMPAT POL 2016. [DOI: 10.1177/0883911506073355] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Fusogenic liposomes have a wide-range of applications as DDS and gene/protein delivery into living cells. A variety of surface modifications of drug carriers, to enable fusion with cells, have been proposed, however, the mechanism of fusion has still not been determined. To further improve the efficiency of drug carriers, a simple and easily examinable model of a living cell surface is needed. In this study, the time-course of a fusion phenomena was made by measuring the surface pressure increase of a phospholipid monolayer spread at the air/water interface due to the fusion of liposomes carrying PEO-lipid (dialkyl-terminated polyethylene oxide) reconstituted on their outer surface. The kinetics of the surface pressure change appeared to be bimodal, indicating the coexistence of different fusion pathways. It was found that the presence of the PEO-lipid on the liposome surface led to a faster lipid transfer compared to non-modified DMPC liposomes. This indicated that the reconstitution of PEO-lipid provided an alternative transfer pathway to that for non-fusogenic liposomes that show only a slow lipid transfer to phospholipid monolayers. The relation between the rate of fusion and the surface pressure of the host membrane is discussed.
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Affiliation(s)
- Nobuhiro Morone
- Department of Ultrastructural Research, National Institute of Neuroscience, National Center of Neurology and Psychiatry, 4-1-1 Ogawa-Higashi, Kodaira, Tokyo 187-8502, Japan
| | - Takehiko Ueda
- Department of Bioengineering, Kagoshima University, 1-21-40 Kourimoto, Kagoshima 890-0065, Japan,
| | - Yasuhiro Tsudo
- Research and Development Division, Sanyo Chemical Industries, Ltd, Rohm Plaza Kyotodaigaku-Katsura, Nishikyo-ku Kyoto, 615-8520, Japan
| | - Yukihisa Okumura
- Department of Chemistry and Material Engineering, Shinshu University, 4-17-1 Wakasato, Nagano 380-8553, Japan
| | - Veronique Rosilio
- Laboratoire de Physico-Chimie des Surfaces, Univ Paris-Sud UMR 8612 CNRS, 5 rue J. B. Clement, Chatenay-Malabry F-92296, France
| | - Adam Baszkin
- Laboratoire de Physico-Chimie des Surfaces, Univ Paris-Sud UMR 8612 CNRS, 5 rue J. B. Clement, Chatenay-Malabry F-92296, France
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Shigenobu H, McNamee CE. The interaction of insulin, glucose, and insulin–glucose mixtures with a phospholipid monolayer. J Colloid Interface Sci 2012; 388:274-81. [DOI: 10.1016/j.jcis.2012.08.015] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2012] [Revised: 07/23/2012] [Accepted: 08/07/2012] [Indexed: 01/17/2023]
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Santos HA, Ferreira ES, Pereira EJ, Pereira CM, Kontturi K, Silva F. Adsorption–Penetration Studies of Glucose Oxidase into Phospholipid Monolayers at the 1,2-Dichloroethane/Water Interface. Chemphyschem 2007; 8:1540-7. [PMID: 17569093 DOI: 10.1002/cphc.200700137] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
The interaction between glucose oxidase (GOx) and phospholipid monolayers is studied at the 1,2-dichloroethane/water interface by electrochemical impedance spectroscopy. Electrochemical experiments show that the presence of GOx induces changes in the capacitance curves at both negative and positive potentials, which are successfully explained by a theoretical model based on the solution of the Poisson-Boltzmann equation. These changes are ascribed to a reduced partition coefficient of GOx and an increase of the permittivity of the lipid hydrocarbon domain. Our results show that the presence of lipid molecules enhances the adsorption of GOx molecules at the liquid/liquid interface. At low lipid concentrations, the adsorption of GOx is probably the first step preceding its penetration into the lipid monolayer. The experimental results indicate that GOx penetrates better and forms more stable monolayers for lipids with longer hydrophobic tails. At high GOx concentrations, the formation of multilayers is observed. The phenomenon described here is strongly dependent on 1) the GOx and lipid concentrations, 2) the nature of the lipid, and 3) the potential drop across the interface.
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Affiliation(s)
- Hélder A Santos
- Laboratory of Physical Chemistry and Electrochemistry, Department of Chemical Technology, Helsinki University of Technology, P.O. Box 6100, Kemistintie 1, 02015 HUT Espoo, Finland.
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Baszkin A. Molecular recognition on the supported and on the air/water interface-spread protein monolayers. Adv Colloid Interface Sci 2006; 128-130:111-20. [PMID: 17196538 DOI: 10.1016/j.cis.2006.11.008] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
Targeting of proteins at interfaces via affinity ligands or specific antibodies is important for the understanding of protein functioning in biological membranes. This review brings together a great number of research works accomplished in this field in the past decade by a variety of analytical methods. It highlights two simple in situ techniques of monitoring molecular recognition processes at interfaces recently developed in the author's laboratory. The first of these techniques is based on the measurements of surface pressure increments of a protein monolayer spread at the air/water interface at a constant area resulting from the interaction with its specific ligands injected into the aqueous subphase beneath the preformed protein monolayer. The second technique takes advantage of the feature of [(14)C]-labeled proteins that enable in situ measurements of surface density changes of adsorbed protein molecules on a solid support resulting from the interaction with its specific antibody.
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Affiliation(s)
- Adam Baszkin
- Physico-Chimie des Surfaces, UMR CNRS 8612, Université Paris-Sud, 92296 Châtenay-Melabry Cedex, France.
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Nazaruk E, Michota A, Bukowska J, Shleev S, Gorton L, Bilewicz R. Properties of native and hydrophobic laccases immobilized in the liquid-crystalline cubic phase on electrodes. J Biol Inorg Chem 2006; 12:335-44. [PMID: 17151864 DOI: 10.1007/s00775-006-0193-7] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2006] [Accepted: 10/24/2006] [Indexed: 12/01/2022]
Abstract
Both native Trametes hirsuta laccase and the same laccase modified with palmytic chains to turn it more hydrophobic were prepared and studied with cyclic voltammetry and Raman spectroscopy. Native laccase immobilized in the monoolein cubic phase was characterized with resonance Raman spectroscopy, which demonstrated that the structure at the "blue" copper site of the protein remained intact. The diamond-type monoolein cubic phase prevents denaturation of enzymes on the electrode surface and provides contact of the enzyme with the electrode either directly or through the mediation by electroactive probes. Direct electron transfer for both laccases incorporated into a lyotropic liquid crystal was obtained under anaerobic conditions, whereas bioelectrocatalytic activity was shown only for the native enzyme. The differences in electrochemical behavior of native and hydrophobic laccase as well as possible mechanisms of direct and mediated electron transfers are discussed. The Michaelis constant for 2,2'-azinobis(3-ethylbenzothiazoline-6-sulfonate) diammonium salt (ABTS2-), KMapp, and the maximal current, Imax, for the native enzyme immobilized onto the electrode were estimated to be 0.24 mM, and 5.3 microA, respectively. The maximal current density and the efficiency of the catalysis, Imax/KMapp, were found to be 73 microA cm-2 and 208.2 microA cm-2 mM-1, respectively, and indicated a high efficiency of oxygen electroreduction by the enzyme in the presence of ABTS2- in the cubic-phase environment. Rate constants were calculated to be 7.5x10(4) and 3.6x10(4) M-1 s-1 for native and hydrophobic laccase, respectively.
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Affiliation(s)
- Ewa Nazaruk
- Faculty of Chemistry, University of Warsaw, Pasteura 1, 02-093, Warsaw, Poland
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Andrade CAS, Baszkin A, Santos-Magalhães NS, Coelho LCBB, de Melo CP. Mixed monolayers of Bauhinia monandra and concanavalin A lectins with phospholipids, part II. J Colloid Interface Sci 2006; 289:379-85. [PMID: 15992806 DOI: 10.1016/j.jcis.2005.05.063] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2004] [Revised: 04/06/2005] [Accepted: 05/12/2005] [Indexed: 11/21/2022]
Abstract
Isotherms of surface pressure and surface potential versus mean molecular area for dibehenoylphosphatidylcholine (DBPC), dipalmitoylphosphatidylcholine (DPPC), dipalmitoylphosphatidylethanolamine (DPPE), and dioleoylphosphatidylcholine (DOPC) monolayers were shown to be greatly modified when these lipids were cospread with either Bauhinia monandra (BmoLL) or Concanavalin A (Con A) lectins. For the binary films of DBPC, DPPC, and DPPE cospread with each of these two lectins, there was both a displacement of the Pi-A and DeltaV-A isotherms toward higher molecular areas relative to pure lipids and an increase in the maximum surface potential values relative to the DeltaV-A relationships observed for the corresponding single-lectin systems. Both effects can be understood in terms of the occurrence of an explicit interaction between the lipids and the lectins. The plots of the corresponding compressibilities versus molecular areas reveal that, for all lipids but DOPC, the extent of this interaction was always larger for BmoLL than for Con A. The DPPC and DPPE mixed films with BmoLL differed in compressibility. Owing to the small DPPE polar headgroup, the DPPE-BmoLL film was much more incompressible than the DPPC-BmoLL mixed monolayer. However, for the DOPC-BmoLL and DOPC-Con A mixed films there was no evidence that an interaction between the lectins and the lipid took place, a fact attributed to the unsaturated character in the DOPC aliphatic chains, which leads to an expanded Pi-A isotherm.
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Affiliation(s)
- Cesar A S Andrade
- Pós-Graduação em Ciência de Materiais, Universidade Federal de Pernambuco, 50670-901 Recife, PE, Brazil
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Hac-Wydro K, Dynarowicz-Łatka P, Grzybowska J, Borowski E. Interactions of amphotericin B derivative of low toxicity with biological membrane components—the Langmuir monolayer approach. Biophys Chem 2005; 116:77-88. [PMID: 15911084 DOI: 10.1016/j.bpc.2005.03.001] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2004] [Revised: 03/02/2005] [Accepted: 03/07/2005] [Indexed: 10/25/2022]
Abstract
Amphotericin B (AmB)--a polyene macrolide antibiotic--exhibits strong antifungal activity, however, is known to be very toxic to mammalian cells. In order to decrease AmB toxicity, a number of its derivatives have been synthesized. Basing on in vitro and in vivo research, it was evidenced that one of AmB derivatives, namely N-methyl-N-D-fructopyranosylamphotericin B methyl ester (in short MF-AME) retained most of the antifungal activity of the parent antibiotic, however, exhibited dramatically lower animal toxicity. Therefore, MF-AME seems to be a very promising modification product of AmB. However, further development of this derivative as potential new antifungal drug requires the elucidation of its molecular mechanism of reduced toxicity, which was the aim of the present investigations. Our studies were based on examining the binding energies by determining the strength of interaction between MF-AME and membrane sterols (ergosterol-fungi sterol, and cholesterol-mammalian sterol) and DPPC (model membrane phospholipid) using the Langmuir monolayer technique, which serves as a model of cellular membrane. Our results revealed that at low concentration the affinity of MF-AME to ergosterol is considerably stronger as compared to cholesterol, which correlates with the improved selective toxicity of this drug. It is of importance that the presence of phospholipids is essential since--due to very strong interactions between MF-AME and DPPC--the antibiotic used in higher concentration is "immobilized" by DPPC molecules, which reduces the concentration of free antibiotic, thus enabling it to selectively interact with both sterols.
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Affiliation(s)
- K Hac-Wydro
- Faculty of Chemistry, Jagiellonian University, Ingardena 3, 30-060 Kraków, Poland
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Lele BS, Papworth G, Katsemi V, Rüterjans H, Martyano I, Klabunde KJ, Russell AJ. Enhancing bioplastic-substrate interaction via pore induction and directed migration of enzyme location. Biotechnol Bioeng 2004; 86:628-36. [PMID: 15137073 DOI: 10.1002/bit.20106] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
We demonstrate two novel approaches to enhance interactions of polymer-immobilized biomolecules with their substrates. In the first approach, diisopropylfluorophosphatase (DFPase) containing poly(urethane) (PU) coatings were made microporous by incorporating, then extracting, poly(ethylene glycol)-based diesters as porogens. Incorporation of 2% w/w porogen increased the effective diffusion coefficient of diisopropylfluorophosphate (DFP) through the coatings by 30% and increased the apparent turnover number of immobilized DFPase 3-fold. In the second approach, prior to immobilization, hydrophobic modification of DFPase was achieved through its conjugation with a dimer/trimer mixture of a uretdione based on 1,6-diisocyanatohexane. When the hydrophobically modified DFPase was immobilized in coatings, catalytic activity was 4-fold higher than that of the equivalent, immobilized, native DFPase. This activity enhancement was independent of the presence or absence of pores. Confocal microscopy images of coatings containing fluorescently labeled lysozyme show that the native enzyme is distributed uniformly over the entire thickness of the coatings. Hydrophobically modified and fluorescently labeled lysozyme is accumulated only in the upper 10 microm cross-sectional layer of a 100 microm-thick coating. Interactions of bioplastics with their substrates are tunable either by pore induction in a polymer or by directed migration of the hydrophobically modified biomolecule to the desired location. The latter approach has broad implications, including overcoming mass transfer limitations experienced by immobilized biocatalysts.
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Affiliation(s)
- Bhalchandra S Lele
- Department of Bioengineering and McGowan Institute for Regenerative Medicine, Center for Biotechnology and Bioengineering, University of Pittsburgh, Pennsylvania 15219, USA
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Adsorption of glucose oxidase into lipid monolayers: effect of a lipid headgroup charge. Colloids Surf B Biointerfaces 2003. [DOI: 10.1016/s0927-7765(02)00181-9] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Abstract
Results of atomistic molecular dynamics simulations of dipalmitoylphosphatidylcholine and dipalmitoylphosphatidylglycerol monolayers at the air/water interface are presented. Dipalmitoylphosphatidylcholine is zwitterionic and dipalmitoylphosphatidylglycerol is anionic at physiological pH. NaCl and CaCl2 water subphases are simulated. The simulations are carried out at different surface densities, and a simulation cell geometry is chosen that greatly facilitates the investigation of phospholipid monolayer properties. Ensemble average monolayer properties calculated from simulation are in agreement with experimental measurements. The dependence of the properties of the monolayers on the surface density, the type of the headgroup, and the ionic environment are explained in terms of atomistically detailed pair distribution functions and electron density profiles, demonstrating the strength of simulations in investigating complex, multicomponent systems of biological importance.
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Affiliation(s)
- Yiannis N Kaznessis
- Department of Chemical Engineering, University of Michigan, Ann Arbor, Michigan 48109-2136, USA
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Kamyshny A, Trofimova D, Magdassi S, Levashov A. Native and modified glucose oxidase in reversed micelles. Colloids Surf B Biointerfaces 2002. [DOI: 10.1016/s0927-7765(01)00238-7] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Baszkin A, Boissonnade MM, Santos-Magalhaes NS, Carvalho LB, Correia MT, Coelho LC. Cratylia mollis lectin at the air–aqueous solution interface: adsorption and lectin–lipid interactions. Colloids Surf B Biointerfaces 2000. [DOI: 10.1016/s0927-7765(99)00104-6] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Kamyshny A, Feldman A, Baszkin A, Boissonnade MM, Rosilio V, Magdassi S. Chemically Modified Glucose Oxidase with Enhanced Hydrophobicity: Adsorption at Polystyrene, Silica, and Silica Coated by Lipid Monolayers. J Colloid Interface Sci 1999; 218:300-308. [PMID: 10489305 DOI: 10.1006/jcis.1999.6440] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Covalent modification of glucose oxidase from Aspergillus niger by the palmitic acid ester of N-hydroxysuccinimide at a molar ratio ester:protein of 56:1 results in the formation of the enzyme derivative with 11 attached palmitic chains. Surface hydrophobicity measurements by a fluorescent probe, 8-anilino-1-naphthalenesulfonate, indicate a drastic increase in the hydrophobicity index of glucose oxidase after such a modification. The modified glucose oxidase displays a much higher adsorption affinity for hydrophilic (silica) as well as for hydrophobic (silica coated by phosphatidyl choline and cholesterol monolayers and polystyrene latex beads) surfaces, and forms more compact surface layers compared to the native glucose oxidase. Such a difference results from a spontaneous formation of micelle-like aggregates (clusters) of the hydrophobized enzyme molecules (average size 500 nm), which come into contact with a surface. A possible structure of the glucose oxidase surface layers and the nature of the forces determining the adsorption of the enzyme on various adsorbents are discussed. Copyright 1999 Academic Press.
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Affiliation(s)
- A Kamyshny
- Casali Institute of Applied Chemistry, The Hebrew University of Jerusalem, Jerusalem, 91904, Israel
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Brockman H. Lipid monolayers: why use half a membrane to characterize protein-membrane interactions? Curr Opin Struct Biol 1999; 9:438-43. [PMID: 10449364 DOI: 10.1016/s0959-440x(99)80061-x] [Citation(s) in RCA: 409] [Impact Index Per Article: 16.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Variants of membrane-active proteins and peptides are increasingly available through synthesis and molecular engineering. When determining the effects of structural changes upon the interaction of these proteins with lipid membranes, monomolecular films of lipids at the air-water interface have significant advantages over bilayers and other lipid dispersions. In the past year, a variety of protein-lipid interactions has been characterized successfully using relatively simple surface measurements.
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Affiliation(s)
- H Brockman
- The Hormel Institute, University of Minnesota, 801 NE 16th Avenue, Austin, MN 55912, USA.
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