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Liu G, Sun P, Yan J, Shao P, Feng S. Regulation of Nanoliposome Rigidity and Bioavailability of Oligomeric Proanthocyanidin with Phytosterols Containing Different C3 Branches. ACS APPLIED MATERIALS & INTERFACES 2023; 15:43414-43430. [PMID: 37669469 DOI: 10.1021/acsami.3c07854] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/07/2023]
Abstract
The rigidity of nanoliposomes significantly influences their physical stability and in vitro and in vivo behaviors (e.g., cellular uptake, blood circulation, biodistribution, etc.). This study aimed to quantify the rigidity of the nanoliposomes composed of phytosterol with varying C3 branches and phospholipids (DPPC, DOPC) using atomic force microscopy. Young's modulus, determined by the Shell model, effectively differentiated between mechanical differences in nanoliposomes with varying components and component structure and phase states. FTIR results indicated that P-SG exhibited the highest Young's modulus (175.98 ± 10.53 MPa) due to the hydrogen bond between the glucose residue of steryl glycosides (SGs) and the phospholipid polar head. However, the rigidity of DOPC nanoliposomes was not significantly different due to the unsaturated bond. The addition of oligomeric proanthocyanidin (OPC) did not change the order of rigidity among the nanoliposomes, with P-SG-OPC having the highest Young's modulus (126.27 ± 2.06 MPa). In the simulated gastrointestinal tract experiment, P-SG-OPC exhibited the greatest stability, with minimal particle aggregation. Cellular uptake experiments revealed that DPPC nanoliposomes with high rigidity had optimal endocytosis, while DOPC nanoliposome uptake was independent of rigidity. In melanin production inhibition tests, the inhibitory effect correlated directly with Young's modulus and P-SG-OPC had the best inhibitory effect on melanin generation. Our findings in this study provide valuable insights into the design and optimization of nanoliposomes for the efficient delivery of active substances, offering potential solutions for improving the efficacy of drug delivery systems.
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Affiliation(s)
- Gaodan Liu
- Department of Food Science and Technology, Zhejiang University of Technology, Hangzhou 310014, Zhejiang, People's Republic of China
| | - Peilong Sun
- Department of Food Science and Technology, Zhejiang University of Technology, Hangzhou 310014, Zhejiang, People's Republic of China
- Key Laboratory of Food Macromolecular Resources Processing Technology Research (Zhejiang University of Technology), China National Light Industry, Hangzhou 310014, Zhejiang, People's Republic of China
| | - Jiadan Yan
- Department of Food Science and Technology, Zhejiang University of Technology, Hangzhou 310014, Zhejiang, People's Republic of China
| | - Ping Shao
- Department of Food Science and Technology, Zhejiang University of Technology, Hangzhou 310014, Zhejiang, People's Republic of China
- Key Laboratory of Food Macromolecular Resources Processing Technology Research (Zhejiang University of Technology), China National Light Industry, Hangzhou 310014, Zhejiang, People's Republic of China
| | - Simin Feng
- Department of Food Science and Technology, Zhejiang University of Technology, Hangzhou 310014, Zhejiang, People's Republic of China
- Key Laboratory of Food Macromolecular Resources Processing Technology Research (Zhejiang University of Technology), China National Light Industry, Hangzhou 310014, Zhejiang, People's Republic of China
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Supported Lipid Bilayer Platform for Characterizing the Membrane-Disruptive Behaviors of Triton X-100 and Potential Detergent Replacements. Int J Mol Sci 2022; 23:ijms23020869. [PMID: 35055053 PMCID: PMC8775805 DOI: 10.3390/ijms23020869] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2021] [Revised: 01/08/2022] [Accepted: 01/12/2022] [Indexed: 02/07/2023] Open
Abstract
Triton X-100 (TX-100) is a widely used detergent to prevent viral contamination of manufactured biologicals and biopharmaceuticals, and acts by disrupting membrane-enveloped virus particles. However, environmental concerns about ecotoxic byproducts are leading to TX-100 phase out and there is an outstanding need to identify functionally equivalent detergents that can potentially replace TX-100. To date, a few detergent candidates have been identified based on viral inactivation studies, while direct mechanistic comparison of TX-100 and potential replacements from a biophysical interaction perspective is warranted. Herein, we employed a supported lipid bilayer (SLB) platform to comparatively evaluate the membrane-disruptive properties of TX-100 and a potential replacement, Simulsol SL 11W (SL-11W), and identified key mechanistic differences in terms of how the two detergents interact with phospholipid membranes. Quartz crystal microbalance-dissipation (QCM-D) measurements revealed that TX-100 was more potent and induced rapid, irreversible, and complete membrane solubilization, whereas SL-11W caused more gradual, reversible membrane budding and did not induce extensive membrane solubilization. The results further demonstrated that TX-100 and SL-11W both exhibit concentration-dependent interaction behaviors and were only active at or above their respective critical micelle concentration (CMC) values. Collectively, our findings demonstrate that TX-100 and SL-11W have distinct membrane-disruptive effects in terms of potency, mechanism of action, and interaction kinetics, and the SLB platform approach can support the development of biophysical assays to efficiently test potential TX-100 replacements.
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Davantès A, Nigen M, Sanchez C, Renard D. Adsorption Behavior of Arabinogalactan-Proteins (AGPs) from Acacia senegal Gum at a Solid-Liquid Interface. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2021; 37:10547-10559. [PMID: 34427446 DOI: 10.1021/acs.langmuir.1c01619] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Adsorption of five different hyperbranched arabinogalactan-protein (AGP) fractions from Acacia senegal gum was thoroughly studied at the solid-liquid interface using a quartz crystal microbalance with dissipation monitoring (QCM-D), surface plasmon resonance (SPR), and atomic force microscopy (AFM). The impact of the protein/sugar ratio, molecular weight, and aggregation state on the adsorption capacity was investigated by studying AGP fractions with different structural and biochemical features. Adsorption on a solid surface would be primarily driven by the protein moiety of the AGPs through hydrophobic forces and electrostatic interactions. Increasing ionic strength allows the decrease in electrostatic repulsions and, therefore, the formation of high-coverage films with aggregates on the surface. However, the maximum adsorption capacity was not reached by fractions with a higher protein content but by a fraction that contains an average protein quantity and presents a high content of high-molecular-weight AGPs. The results of this thorough study highlighted that the AGP surface adsorption process would depend not only on the protein moiety and high-molecular-weight AGP content but also on other parameters such as the structural accessibility of proteins, the molecular weight distribution, and the AGP flexibility, allowing structural rearrangements on the surface and spreading to form a viscoelastic film.
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Affiliation(s)
- Athénaïs Davantès
- UR BIA, INRAE Pays de la Loire, 3 impasse Yvette Cauchois, La Géraudière, CS 71627, F-44316 Nantes Cedex 3, France
| | - Michaël Nigen
- UMR IATE, UM-INRAE-CIRAD-Montpellier Supagro, 2 Place Viala, F-34060 Montpellier Cedex, France
| | - Christian Sanchez
- UMR IATE, UM-INRAE-CIRAD-Montpellier Supagro, 2 Place Viala, F-34060 Montpellier Cedex, France
| | - Denis Renard
- UR BIA, INRAE Pays de la Loire, 3 impasse Yvette Cauchois, La Géraudière, CS 71627, F-44316 Nantes Cedex 3, France
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Bibissidis N, Betlem K, Cordoyiannis G, Bonhorst FPV, Goole J, Raval J, Daniel M, Góźdź W, Iglič A, Losada-Pérez P. Correlation between adhesion strength and phase behaviour in solid-supported lipid membranes. J Mol Liq 2020. [DOI: 10.1016/j.molliq.2020.114492] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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5
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Zhang H, Wei X, Liu L, Zhang Q, Jiang W. The role of positively charged sites in the interaction between model cell membranes and γ-Fe 2O 3 NPs. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 673:414-423. [PMID: 30991331 DOI: 10.1016/j.scitotenv.2019.04.074] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/18/2019] [Revised: 04/04/2019] [Accepted: 04/06/2019] [Indexed: 06/09/2023]
Abstract
The various applications of iron oxide nanoparticles (NPs) in clinical care and wastewater treatment are rapidly developing, thus their biological safety is worth attention. The electrostatic interaction between cell membranes and NPs is the key mechanism behind membrane damage and membrane penetration. Cell membranes are generally negatively charged with a few positively charged domains. The role of the positively charged sites in the NP-membrane interaction needs further investigation. In this study, the ratio of the positively charged sites was adjusted in two model cell membranes: giant and small unilamellar vesicles (GUVs and SUVs). After exposure to negatively charged γ-Fe2O3 NPs, the adhesion of NPs on the membranes and the induced membrane disruption were studied by microscopic observation and quartz crystal microbalance (QCM) monitoring. γ-Fe2O3 NPs adhered to and disrupted the membranes containing even few positively charged sites, although the whole membrane exhibited a negative zeta potential and hence electrostatically repels the NPs. The number of adhered γ-Fe2O3 NPs increased remarkably on membranes with overall positive zeta potential, but more serious disruption happened to membranes with higher ratios of positively charged sites. Therefore, the membrane rupture was more correlated to the number of positively charged sites than to the zeta potential of the whole membrane. In addition, exposure to γ-Fe2O3 NPs decreased the order of the lipid molecules and hence increased the fluidity of the membrane phase, and the most significant phase change occurred in the negatively charged membrane with the highest ratio of positively charged sites. Infrared spectra indicated that γ-Fe2O3 NPs probably interact with the membranes via the phosphodiester and trimethylamine groups in the lipid head groups. Our research furthers our knowledge of the electrostatic interaction between NPs and cell membranes, which should help to predict the biological effects of γ-Fe2O3 NPs.
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Affiliation(s)
- Hanqiong Zhang
- Environment Research Institute, Shandong University, Qingdao 266237, China
| | - Xiaoran Wei
- School of Public Health, Qingdao University, Qingdao 266021, China
| | - Ling Liu
- Environment Research Institute, Shandong University, Qingdao 266237, China
| | - Qingzhu Zhang
- Environment Research Institute, Shandong University, Qingdao 266237, China
| | - Wei Jiang
- Environment Research Institute, Shandong University, Qingdao 266237, China.
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6
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Silver Nanoparticles on Cellulose Surfaces: Quantitative Measurements. NANOMATERIALS 2019; 9:nano9050780. [PMID: 31121849 PMCID: PMC6566189 DOI: 10.3390/nano9050780] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/19/2019] [Revised: 05/16/2019] [Accepted: 05/19/2019] [Indexed: 11/17/2022]
Abstract
In this work, cellulose films pre-activated with carbonyldiimidazole (CDI) and grafted with 1,6-hexanediamine, were decorated with silver nanoparticles (AgNPs). The generation of AgNPs was followed by quartz crystal microbalance (QCM). The obtained films were characterized by X-Ray Photoelectron Spectroscopy (XPS) and imaged by atomic force microscopy (AFM). XPS confirmed the synthesis in situ of AgNPs on the film attesting their oxidation state. The results from the three techniques were compared showing how sound the quantitative treatment of the results issued from these techniques can be. The main objective of this work is exactly to show that the quantitative exploration of the results of different characterization techniques can and should be practiced systematically instead of just comparing them qualitatively.
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Belfiore L, Spenkelink LM, Ranson M, van Oijen AM, Vine KL. Quantification of ligand density and stoichiometry on the surface of liposomes using single-molecule fluorescence imaging. J Control Release 2018; 278:80-86. [DOI: 10.1016/j.jconrel.2018.03.022] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2018] [Accepted: 03/21/2018] [Indexed: 12/01/2022]
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9
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Electrokinetic investigation of deposition of cationic fabric softener vesicles on anionic porous cotton fabrics. J Colloid Interface Sci 2018; 514:132-145. [DOI: 10.1016/j.jcis.2017.11.062] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2017] [Revised: 11/17/2017] [Accepted: 11/20/2017] [Indexed: 01/19/2023]
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10
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Engineering the interface between lipid membranes and nanoporous gold: A study by quartz crystal microbalance with dissipation monitoring. Biointerphases 2018; 13:011002. [PMID: 29304551 DOI: 10.1116/1.5010249] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Nanoporous gold (np-Au) is a nanostructured metal with many desirable attributes. Despite the growing number of applications of nanoporous materials, there are still open questions regarding their fabrication and subsequent surface functionalization. For example, the hydrophobic nature of gold surfaces makes the formation of planar supported lipid layers challenging. Here, the authors engineer the interface between np-Au and 1,2-dioleoyl-sn-glycero-3-phosphocholine lipid layers using well-differentiated approaches based on vesicle adsorption and solvent exchange methods. The results reveal that the nanotopography of the np-Au surface plays a clear role in the vesicle adsorption process. Compared to vesicle adsorption, the solvent exchange method proves successful in the formation of planar supported lipid bilayers in both np-Au and planar Au surfaces, being less sensitive to the surface morphological features. The influence of nanostructured surfaces on lipid layer formation is determined by the driving mechanisms behind each process, i.e., the balance of adhesion and cohesion forces in vesicle adsorption and lyotropic lipid phase transitions in solvent exchange, respectively. A better understanding of such interactions will contribute to the development of a variety of applications, from electrochemical biosensors to drug screening and delivery systems, using nanoporous gold coated with stimuli-responsive lipid layers.
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11
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Kılıç A, Fazeli Jadidi M, Özer HÖ, Kök FN. The effect of thiolated phospholipids on formation of supported lipid bilayers on gold substrates investigated by surface-sensitive methods. Colloids Surf B Biointerfaces 2017; 160:117-125. [DOI: 10.1016/j.colsurfb.2017.09.016] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2017] [Revised: 08/19/2017] [Accepted: 09/06/2017] [Indexed: 10/18/2022]
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12
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Bailey CM, Tripathi A, Shukla A. Effects of Flow and Bulk Vesicle Concentration on Supported Lipid Bilayer Formation. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:11986-11997. [PMID: 28949544 DOI: 10.1021/acs.langmuir.7b02764] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Supported lipid bilayers (SLBs) have been used extensively in a variety of biotechnology applications and fundamental studies exploring lipid behavior. Despite their widespread use, various physicochemical parameters have yet to be thoroughly investigated for their impact on SLB formation. In this work, we have studied the importance of flow in inducing the rupture of surface adsorbed chicken egg-derived l-α-phosphatidylcholine (egg PC) vesicles on silica and gold surfaces via quartz crystal microbalance with dissipation monitoring (QCM-D). On silica at 25 °C, egg PC vesicles were found to adsorb in a flattened configuration (∼13 nm thick, compared to bulk vesicle diameters of ∼165 nm) but only undergo a transition to a stable SLB under flow conditions. In the absence of flow, an increase in system temperature to 37 °C was able to promote vesicle rupture and SLB formation on silica with a 10 times lower rupture time, compared to rupture under continuous flow (175 μL/min flow rate). Gold surfaces, with their increased hydrophobicity, led to less vesicle flattening once adsorbed (structures ∼60 nm thick), and did not support vesicle rupture or SLB formation, even at flow rates of up to 650 μL/min. We also showed that, under continuous flow conditions, vesicle adsorption rates on silica surfaces follow Langmuir kinetics, with an inverse dependence on bulk vesicle concentration, while an empirical power law dependence of vesicle rupture time on bulk vesicle concentration was observed. Ultimately, this work elicits fundamental insight into the importance of flow and bulk vesicle concentration in the adsorbed vesicle rupture process during SLB formation using QCM-D.
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Affiliation(s)
- Christina M Bailey
- School of Engineering, Center for Biomedical Engineering, Institute for Molecular and Nanoscale Innovation, Brown University , Providence, Rhode Island 02912, United States
| | - Anubhav Tripathi
- School of Engineering, Center for Biomedical Engineering, Institute for Molecular and Nanoscale Innovation, Brown University , Providence, Rhode Island 02912, United States
| | - Anita Shukla
- School of Engineering, Center for Biomedical Engineering, Institute for Molecular and Nanoscale Innovation, Brown University , Providence, Rhode Island 02912, United States
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13
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Askew HJ, Charnley M, Jarvis KL, McArthur SL. pH-dependent lipid vesicle interactions with plasma polymerized thin films. Biointerphases 2017; 12:02C416. [PMID: 28592113 PMCID: PMC5462616 DOI: 10.1116/1.4984261] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2017] [Revised: 05/15/2017] [Accepted: 05/16/2017] [Indexed: 01/26/2023] Open
Abstract
Model lipid vesicle and supported lipid bilayer (SLB) systems are used in a variety of applications including biosensing, cell membrane mimics, and drug delivery. Exposure of a surface to a vesicle solution provides a straightforward method for creating such systems via vesicle adsorption and collapse. However, this process is complex and the relationship between the surface physicochemical properties and vesicle collapse is poorly understood. Plasma polymers are thin conformal films that can be applied to a variety of materials to modify surface properties. This paper uses quartz crystal microbalance with dissipation and fluorescence recovery after photobleaching (FRAP) to explore lipid vesicle interactions with plasma polymerized acrylic acid (ppAAc), allylamine (ppAAm), and ppAAc/ppAAm micropatterns. Vesicle interactions were dependent on plasma polymer chemistry and pH of the buffer solution. Vesicles readily and stably adsorbed to ppAAm over a wide pH range. ppAAc demonstrated limited interactions at pH 7 and vesicle adsorption at pH 4. Vesicle collapse and SLB formation could be induced using a pH change. FRAP was used to explore the fluidity of the lipid structures on both the patterned and unpatterned plasma polymer films. On ppAAm/ppAAc micropatterns, pH transitions combined with the presence of chemically distinct regions on the same substrate enabled immobile lipid islands on ppAAc to be surrounded by fluid lipid regions on ppAAm. This work demonstrates that plasma polymer films could enable spatially controlled vesicle adsorption and SLB formation on a wide variety of different substrates.
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Affiliation(s)
- Hannah J Askew
- Biointerface Engineering Group, Faculty of Science, Engineering and Technology, Swinburne University of Technology, Hawthorn, VIC 3122, Australia
| | - Mirren Charnley
- Biointerface Engineering Group, Faculty of Science, Engineering and Technology, Swinburne University of Technology, Hawthorn, VIC 3122, Australia and Centre for Micro-Photonics, Faculty of Science, Engineering and Technology, Swinburne University of Technology, Hawthorn, VIC 3122, Australia
| | - Karyn L Jarvis
- Biointerface Engineering Group, Faculty of Science, Engineering and Technology, Swinburne University of Technology, Hawthorn, VIC 3122, Australia and ANFF-Vic Biointerface Engineering Hub, Faculty of Science, Engineering and Technology, Swinburne University of Technology, Hawthorn, VIC 3122, Australia
| | - Sally L McArthur
- Biointerface Engineering Group, Faculty of Science, Engineering and Technology, Swinburne University of Technology, Hawthorn, VIC 3122, Australia and ANFF-Vic Biointerface Engineering Hub, Faculty of Science, Engineering and Technology, Swinburne University of Technology, Hawthorn, VIC 3122, Australia
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Kumar A, Dahl V, Kleinen J, Gambaryan-Roisman T, Venzmer J. Influence of lipid bilayer phase behavior and substrate roughness on the pathways of intact vesicle deposition: A streaming potential study. Colloids Surf A Physicochem Eng Asp 2017. [DOI: 10.1016/j.colsurfa.2016.07.066] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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15
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Kumar Pramanik S, Losada-Pérez P, Reekmans G, Carleer R, D’Olieslaeger M, Vanderzande D, Adriaensens P, Ethirajan A. Physicochemical characterizations of functional hybrid liposomal nanocarriers formed using photo-sensitive lipids. Sci Rep 2017; 7:46257. [PMID: 28406235 PMCID: PMC5390264 DOI: 10.1038/srep46257] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2016] [Accepted: 03/13/2017] [Indexed: 12/24/2022] Open
Abstract
With recent advances in the field of diagnostics and theranostics, liposomal technology has secured a fortified position as a potential nanocarrier. Specifically, radiation/photo-sensitive liposomes containing photo-polymerizable cross-linking lipids are intriguing as they can impart the vesicles with highly interesting properties such as response to stimulus and improved shell stability. In this work, 1,2-bis(10,12-tricosadiynoyl)-sn-glycero-3-phosphoethanolamine (DTPE) is used as a photo-polymerizable lipid to form functional hybrid-liposomes as it can form intermolecular cross-linking through the diacetylenic groups. Hybrid-liposomes were formulated using mixtures of DTPE and saturated lipids of different chain lengths (dipalmitoylphosphatidylcholine (DPPC) and dimirystoilphosphatidylcholine (DMPC)) at different molar ratios. The physico-chemical characteristics of the liposomes has been studied before and after UV irradiation using a combination of techniques: DSC, QCM-D and solid-state NMR. The results signify the importance of a subtle modification in alkyl chain length on the phase behavior of the hybrid-liposomes and on the degree of crosslinking in the shell.
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Affiliation(s)
- Sumit Kumar Pramanik
- Institute for Materials Research (IMO), Hasselt University, Wetenschapspark 1 and Agoralaan D, 3590 Diepenbeek, Belgium
- IMEC, associated lab IMOMEC, Wetenschapspark 1, 3590 Diepenbeek, Belgium
| | - Patricia Losada-Pérez
- Institute for Materials Research (IMO), Hasselt University, Wetenschapspark 1 and Agoralaan D, 3590 Diepenbeek, Belgium
- IMEC, associated lab IMOMEC, Wetenschapspark 1, 3590 Diepenbeek, Belgium
| | - Gunter Reekmans
- Institute for Materials Research (IMO), Hasselt University, Wetenschapspark 1 and Agoralaan D, 3590 Diepenbeek, Belgium
- IMEC, associated lab IMOMEC, Wetenschapspark 1, 3590 Diepenbeek, Belgium
| | - Robert Carleer
- Institute for Materials Research (IMO), Hasselt University, Wetenschapspark 1 and Agoralaan D, 3590 Diepenbeek, Belgium
- IMEC, associated lab IMOMEC, Wetenschapspark 1, 3590 Diepenbeek, Belgium
| | - Marc D’Olieslaeger
- Institute for Materials Research (IMO), Hasselt University, Wetenschapspark 1 and Agoralaan D, 3590 Diepenbeek, Belgium
- IMEC, associated lab IMOMEC, Wetenschapspark 1, 3590 Diepenbeek, Belgium
| | - Dirk Vanderzande
- Institute for Materials Research (IMO), Hasselt University, Wetenschapspark 1 and Agoralaan D, 3590 Diepenbeek, Belgium
- IMEC, associated lab IMOMEC, Wetenschapspark 1, 3590 Diepenbeek, Belgium
| | - Peter Adriaensens
- Institute for Materials Research (IMO), Hasselt University, Wetenschapspark 1 and Agoralaan D, 3590 Diepenbeek, Belgium
- IMEC, associated lab IMOMEC, Wetenschapspark 1, 3590 Diepenbeek, Belgium
| | - Anitha Ethirajan
- Institute for Materials Research (IMO), Hasselt University, Wetenschapspark 1 and Agoralaan D, 3590 Diepenbeek, Belgium
- IMEC, associated lab IMOMEC, Wetenschapspark 1, 3590 Diepenbeek, Belgium
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16
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Oikonomou EK, Mousseau F, Christov N, Cristobal G, Vacher A, Airiau M, Bourgaux C, Heux L, Berret JF. Fabric Softener–Cellulose Nanocrystal Interaction: A Model for Assessing Surfactant Deposition on Cotton. J Phys Chem B 2017; 121:2299-2307. [DOI: 10.1021/acs.jpcb.7b00191] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- E. K. Oikonomou
- Laboratoire
Matière et Systèmes Complexes, UMR 7057 CNRS Université Denis Diderot Paris-VII, Bâtiment Condorcet, 10 rue
Alice Domon et Léonie Duquet, 75205 Paris, France
| | - F. Mousseau
- Laboratoire
Matière et Systèmes Complexes, UMR 7057 CNRS Université Denis Diderot Paris-VII, Bâtiment Condorcet, 10 rue
Alice Domon et Léonie Duquet, 75205 Paris, France
| | - N. Christov
- Solvay Research & Innovation Center Singapore, 1 Biopolis Drive, Amnios, Singapore 138622
| | - G. Cristobal
- Solvay Research & Innovation Center Singapore, 1 Biopolis Drive, Amnios, Singapore 138622
| | - A. Vacher
- Solvay Research & Innovation Centre Paris, 52 rue de la Haie Coq, 93306 Aubervilliers Cedex, France
| | - M. Airiau
- Solvay Research & Innovation Centre Paris, 52 rue de la Haie Coq, 93306 Aubervilliers Cedex, France
| | - C. Bourgaux
- Institut Galien Paris-Sud - UMR CNRS 8612, Faculté de Pharmacie, Université Paris-Sud XI, 92296 Châtenay-Malabry Cedex, France
| | - L. Heux
- Centre de Recherches sur les Macromolécules Végétales, BP 53, 38041 Grenoble Cedex 9, France
| | - J.-F. Berret
- Laboratoire
Matière et Systèmes Complexes, UMR 7057 CNRS Université Denis Diderot Paris-VII, Bâtiment Condorcet, 10 rue
Alice Domon et Léonie Duquet, 75205 Paris, France
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17
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Nayef L, Castiello R, Tabrizian M. Washless Method Enables Multilayer Coating of an Aggregation-Prone Nanoparticulate Drug Delivery System with Enhanced Yields, Colloidal Stability, and Scalability. Macromol Biosci 2017; 17. [PMID: 28225570 DOI: 10.1002/mabi.201600535] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2016] [Revised: 01/16/2017] [Indexed: 12/22/2022]
Abstract
Aggregation is frequently encountered during coating nanoparticles, especially when the core is not solid and the coating polyelectrolytes are weak. Here, the coating of a nanoliposome with two weak polyelectrolytes, alginate and chitosan, is investigated. First, quartz crystal microbalance with dissipation, atomic force microscopy, scanning electron microscopy, and energy dispersive spectroscopy analyses confirm the feasibility of firm adsorption of up to 16 layers of weak polyelectrolytes to the liposomal surface. Titrations are then performed to identify the lowest amounts of polyelectrolytes required to make eight saturated coating layers using the washless method. Significantly improved yields and reproducibility (almost 100%) are achieved, in addition to control over layer thickness. Attenuated total reflectance Fourier transform infrared spectroscopy studies confirm the success of layering. This is special since scientists always attempt to reduce nanoparticle aggregation by substituting the soft core, using one strong polyelectrolyte, or contending with lower yields or numbers of coating layers.
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Affiliation(s)
- Lamees Nayef
- Department of Biomedical Engineering, McGill University, 740-ave. Dr. Penfield, Room 4300, Montréal, QC H3A 0G1, Canada
| | - Rafael Castiello
- Department of Biomedical Engineering, McGill University, 740-ave. Dr. Penfield, Room 4300, Montréal, QC H3A 0G1, Canada
| | - Maryam Tabrizian
- Department of Biomedical Engineering, McGill University, 740-ave. Dr. Penfield, Room 4300, Montréal, QC H3A 0G1, Canada.,Department of Biomedical Engineering, McGill University, 3775-rue University Room 313/308B, Montréal, QC H3A 2B4, Canada
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Hasan IY, Mechler A. Nanoviscosity Measurements Revealing Domain Formation in Biomimetic Membranes. Anal Chem 2017; 89:1855-1862. [PMID: 28208292 DOI: 10.1021/acs.analchem.6b04256] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Partitioning of lipid molecules in biomimetic membranes is a model system for the study of naturally occurring domains, such as rafts, in biological membranes. The existence of nanometer scale membrane domains in binary lipid mixtures has been shown with microscopy methods; however, the nature of these domains has not been established unequivocally. A common notion is to ascribe domain separation to thermodynamic phase equilibria. However, characterizing thermodynamic phases of single bilayer membranes has not been possible due to their extreme dimensions: the size of the domains falls to the order of tens to hundreds of nanometers whereas the membrane thickness is only a few nanometers. Here, we present direct measurements of phase transitions in single bilayers of 1,2-dimyristoyl-sn-glycero-3-phosphocholine (DMPC)/1,2-dipalmitoyl-sn-glycero-3-phosphocholine (DPPC) phospholipid mixtures using quartz crystal microbalance-based nanoviscosity measurements. Coexisting thermodynamic phases have been successfully identified, and a phase diagram was constructed for the single bilayer binary lipid system. It was demonstrated that domain separation only takes place in planar membranes, and thus, it is absent in liposomes and not detectable in calorimetric measurements on liposome suspensions. On the basis of energetic analysis, the main transition was identified as the breaking of van der Waals interactions between the acyl chains.
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Affiliation(s)
- Imad Younus Hasan
- La Trobe Institute for Molecular Science, La Trobe University , Melbourne, Victoria 3086, Australia
| | - Adam Mechler
- La Trobe Institute for Molecular Science, La Trobe University , Melbourne, Victoria 3086, Australia
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Bunker A, Magarkar A, Viitala T. Rational design of liposomal drug delivery systems, a review: Combined experimental and computational studies of lipid membranes, liposomes and their PEGylation. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2016; 1858:2334-2352. [DOI: 10.1016/j.bbamem.2016.02.025] [Citation(s) in RCA: 103] [Impact Index Per Article: 12.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2015] [Revised: 02/09/2016] [Accepted: 02/10/2016] [Indexed: 01/22/2023]
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Losada-Pérez P, Khorshid M, Renner FU. Interactions of Aqueous Imidazolium-Based Ionic Liquid Mixtures with Solid-Supported Phospholipid Vesicles. PLoS One 2016; 11:e0163518. [PMID: 27684947 PMCID: PMC5042501 DOI: 10.1371/journal.pone.0163518] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2016] [Accepted: 09/09/2016] [Indexed: 11/22/2022] Open
Abstract
Despite the environmentally friendly reputation of ionic liquids (ILs), their safety has been recently questioned given their potential as cytotoxic agents. The fundamental mechanisms underlying the interactions between ILs and cells are less studied and by far not completely understood. Biomimetic films are here important biophysical model systems to elucidate fundamental aspects and mechanisms relevant for a large range of biological interaction ranging from signaling to drug reception or toxicity. Here we use dissipative quartz crystal microbalance QCM-D to examine the effect of aqueous imidazolium-based ionic liquid mixtures on solid-supported biomimetic membranes. Specifically, we assess in real time the effect of the cation chain length and the anion nature on a supported vesicle layer of the model phospholipid DMPC. Results indicate that interactions are mainly driven by the hydrophobic components of the IL, which significantly distort the layer and promote vesicle rupture. Our analyses evidence the gradual decrease of the main phase transition temperature upon increasing IL concentration, reflecting increased disorder by weakening of lipid chain interactions. The degree of rupture is significant for ILs with long hydrophobic cation chains and large hydrophobic anions whose behavior is reminiscent of that of antimicrobial peptides.
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Affiliation(s)
| | - Mehran Khorshid
- Institute for Materials Research IMO, Hasselt University, Diepenbeek, Belgium
| | - Frank Uwe Renner
- Institute for Materials Research IMO, Hasselt University, Diepenbeek, Belgium
- IMEC vzw, Associated lab IMOMEC, Diepenbeek, Belgium
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21
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Formation of planar unilamellar phospholipid membranes on oxidized gold substrate. Biointerphases 2016; 11:031017. [DOI: 10.1116/1.4963188] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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Intact deposition of cationic vesicles on anionic cellulose fibers: Role of vesicle size, polydispersity, and substrate roughness studied via streaming potential measurements. J Colloid Interface Sci 2016; 473:152-61. [DOI: 10.1016/j.jcis.2016.04.004] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2016] [Revised: 04/01/2016] [Accepted: 04/02/2016] [Indexed: 11/17/2022]
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Positively charged supported lipid bilayer formation on gold surfaces for neuronal cell culture. Biointerphases 2016; 11:021003. [DOI: 10.1116/1.4945306] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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Paradiso P, Colaço R, Mata JLG, Krastev R, Saramago B, Serro AP. Drug release from liposome coated hydrogels for soft contact lenses: the blinking and temperature effect. J Biomed Mater Res B Appl Biomater 2016; 105:1799-1807. [DOI: 10.1002/jbm.b.33715] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2015] [Revised: 03/11/2016] [Accepted: 05/01/2016] [Indexed: 01/02/2023]
Affiliation(s)
- P. Paradiso
- Centro de Química Estrutural, Complexo I, Instituto Superior Técnico, University of Lisbon; 1049-001 Lisboa Portugal
- Mechanical Engineering Department and IDMEC; Instituto Superior Técnico, University of Lisbon; 1049-001 Lisboa Portugal
| | - R. Colaço
- Centro de Química Estrutural, Complexo I, Instituto Superior Técnico, University of Lisbon; 1049-001 Lisboa Portugal
- Mechanical Engineering Department and IDMEC; Instituto Superior Técnico, University of Lisbon; 1049-001 Lisboa Portugal
| | - J. L. G. Mata
- Centro de Química Estrutural, Complexo I, Instituto Superior Técnico, University of Lisbon; 1049-001 Lisboa Portugal
| | - R. Krastev
- NMI - Natural and Medical Sciences Institute at the University of Tuebingen; 72770 Reutlingen Germany
- Reutlingen University; D-72762 Germany
| | - B. Saramago
- Centro de Química Estrutural, Complexo I, Instituto Superior Técnico, University of Lisbon; 1049-001 Lisboa Portugal
| | - A. P. Serro
- Centro de Química Estrutural, Complexo I, Instituto Superior Técnico, University of Lisbon; 1049-001 Lisboa Portugal
- Centro de Investigação Interdisciplinar Egas Moniz, Instituto Superior de Ciências da Saúde Egas Moniz; Quinta da Granja, Monte de Caparica 2829-511 Caparica Portugal
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25
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Cuco A, Serro AP, Farinha JP, Saramago B, da Silva AG. Interaction of the Alzheimer Aβ(25–35) peptide segment with model membranes. Colloids Surf B Biointerfaces 2016; 141:10-18. [DOI: 10.1016/j.colsurfb.2016.01.015] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2015] [Revised: 01/04/2016] [Accepted: 01/06/2016] [Indexed: 11/15/2022]
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Takechi-Haraya Y, Sakai-Kato K, Abe Y, Kawanishi T, Okuda H, Goda Y. Observation of liposomes of differing lipid composition in aqueous medium by means of atomic force microscopy. Microscopy (Oxf) 2016; 65:383-9. [DOI: 10.1093/jmicro/dfw011] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2016] [Accepted: 02/24/2016] [Indexed: 02/06/2023] Open
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Frost R, Svedhem S, Langhammer C, Kasemo B. Graphene Oxide and Lipid Membranes: Size-Dependent Interactions. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2016; 32:2708-2717. [PMID: 26907859 DOI: 10.1021/acs.langmuir.5b03239] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
We have investigated the interaction of graphene oxide (GO) sheets with supported lipid membranes with focus on how the interaction depends on GO sheet size (three samples in the range of 90-5000 nm) and how it differs between small and large liposomes. The layer-by-layer assembly of these materials into multilamellar structures, as discovered in our previous research, is now further explored. The interaction processes were monitored by two complementary, real time, surface-sensitive analytical techniques: quartz crystal microbalance with dissipation monitoring (QCM-D, electroacoustic sensing) and indirect nanoplasmonic sensing (INPS, optical sensing). The results show that the sizes of each of the two components, graphene oxide and liposomes, are important parameters affecting the resulting multilayer structures. Spontaneous liposome rupture onto graphene oxide is obtained for large lateral dimensions of the graphene oxide sheets.
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Affiliation(s)
- Rickard Frost
- Department of Energy and Environment and ‡Department of Applied Physics, Chalmers University of Technology , SE-412 96 Göteborg, Sweden
| | - Sofia Svedhem
- Department of Energy and Environment and ‡Department of Applied Physics, Chalmers University of Technology , SE-412 96 Göteborg, Sweden
| | - Christoph Langhammer
- Department of Energy and Environment and ‡Department of Applied Physics, Chalmers University of Technology , SE-412 96 Göteborg, Sweden
| | - Bengt Kasemo
- Department of Energy and Environment and ‡Department of Applied Physics, Chalmers University of Technology , SE-412 96 Göteborg, Sweden
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28
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Lee J, Kim JC. Photothermally triggerable solid lipid nanoparticles containing gold nanospheres. Colloids Surf A Physicochem Eng Asp 2015. [DOI: 10.1016/j.colsurfa.2015.08.027] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Frohnmayer JP, Brüggemann D, Eberhard C, Neubauer S, Mollenhauer C, Boehm H, Kessler H, Geiger B, Spatz JP. Minimal synthetic cells to study integrin-mediated adhesion. Angew Chem Int Ed Engl 2015; 54:12472-8. [PMID: 26257266 PMCID: PMC4675076 DOI: 10.1002/anie.201503184] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2015] [Revised: 05/28/2015] [Indexed: 11/12/2022]
Abstract
To shed light on cell-adhesion-related molecular pathways, synthetic cells offer the unique advantage of a well-controlled model system with reduced molecular complexity. Herein, we show that liposomes with the reconstituted platelet integrin αIIb β3 as the adhesion-mediating transmembrane protein are a functional minimal cell model for studying cellular adhesion mechanisms in a defined environment. The interaction of these synthetic cells with various extracellular matrix proteins was analyzed using a quartz crystal microbalance with dissipation monitoring. The data indicated that integrin was functionally incorporated into the lipid vesicles, thus enabling integrin-specific adhesion of the engineered liposomes to fibrinogen- and fibronectin-functionalized surfaces. Then, we were able to initiate the detachment of integrin liposomes from these surfaces in the presence of the peptide GRGDSP, a process that is even faster with our newly synthesized peptide mimetic SN529, which specifically inhibits the integrin αIIb β3 .
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Affiliation(s)
- Johannes P Frohnmayer
- Department of New Materials and Biosystems, Max Planck Institute for Intelligent SystemsHeisenbergstrasse 3, 70569 Stuttgart (Germany)Department of Biophysical Chemistry, University of HeidelbergINF 253, 69120 Heidelberg (Germany) E-mail:
| | - Dorothea Brüggemann
- Department of New Materials and Biosystems, Max Planck Institute for Intelligent SystemsHeisenbergstrasse 3, 70569 Stuttgart (Germany)Department of Biophysical Chemistry, University of HeidelbergINF 253, 69120 Heidelberg (Germany) E-mail:
| | - Christian Eberhard
- Department of New Materials and Biosystems, Max Planck Institute for Intelligent SystemsHeisenbergstrasse 3, 70569 Stuttgart (Germany)Department of Biophysical Chemistry, University of HeidelbergINF 253, 69120 Heidelberg (Germany) E-mail:
| | - Stefanie Neubauer
- Institute for Advanced Study (IAS) and Center of Integrated Protein Science (CIPSM), Department Chemie, Technische Universität MünchenLichtenbergstrasse 4, 85747 Garching (Germany)
| | - Christine Mollenhauer
- Department of New Materials and Biosystems, Max Planck Institute for Intelligent SystemsHeisenbergstrasse 3, 70569 Stuttgart (Germany)Department of Biophysical Chemistry, University of HeidelbergINF 253, 69120 Heidelberg (Germany) E-mail:
- CSF Biomaterials and Cellular Biophysics, Max Planck Institute for Intelligent SystemsHeisenbergstrasse 3, 70569 Stuttgart (Germany)
| | - Heike Boehm
- Department of New Materials and Biosystems, Max Planck Institute for Intelligent SystemsHeisenbergstrasse 3, 70569 Stuttgart (Germany)Department of Biophysical Chemistry, University of HeidelbergINF 253, 69120 Heidelberg (Germany) E-mail:
- CSF Biomaterials and Cellular Biophysics, Max Planck Institute for Intelligent SystemsHeisenbergstrasse 3, 70569 Stuttgart (Germany)
| | - Horst Kessler
- Institute for Advanced Study (IAS) and Center of Integrated Protein Science (CIPSM), Department Chemie, Technische Universität MünchenLichtenbergstrasse 4, 85747 Garching (Germany)
| | - Benjamin Geiger
- The Weizmann Institute of Science, Department of Molecular Cell BiologyRehovot (Israel)
| | - Joachim P Spatz
- Department of New Materials and Biosystems, Max Planck Institute for Intelligent SystemsHeisenbergstrasse 3, 70569 Stuttgart (Germany)Department of Biophysical Chemistry, University of HeidelbergINF 253, 69120 Heidelberg (Germany) E-mail:
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Duša F, Ruokonen SK, Petrovaj J, Viitala T, Wiedmer SK. Ionic liquids affect the adsorption of liposomes onto cationic polyelectrolyte coated silica evidenced by quartz crystal microbalance. Colloids Surf B Biointerfaces 2015; 136:496-505. [PMID: 26454056 DOI: 10.1016/j.colsurfb.2015.09.059] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2015] [Revised: 09/09/2015] [Accepted: 09/28/2015] [Indexed: 01/28/2023]
Abstract
The worldwide use of ionic liquids (ILs) is steadily increasing, and even though they are often referred to as "green solvents" they have been reported to be toxic, especially toward aquatic organisms. In this work, we thoroughly study two phosphonium ILs; octyltributylphosphonium chloride ([P8444]Cl) and tributyl(tetradecyl)phosphonium chloride ([P14444]Cl). Firstly, the critical micelle concentrations (CMCs) of the ILs were determined with fluorescence spectroscopy and the optical pendant drop method in order to gain an understanding of the aggregation behavior of the ILs. Secondly, a biomimicking system of negatively charged unilamellar liposomes was used in order to study the effect of the ILs on biomembranes. Changes in the mechanical properties of adsorbed liposomes were determined by quartz crystal microbalance (QCM) measurements with silica coated quartz crystal sensors featuring a polycation layer. The results confirmed that both ILs were able to incorporate and alter the biomembrane structure. The membrane disrupting effect was emphasized with an increasing concentration and alkyl chain length of the ILs. In the extreme case, the phospholipid membrane integrity was completely compromised.
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Affiliation(s)
- Filip Duša
- Department of Chemistry, P.O. Box 55, 00014 University of Helsinki, Finland
| | | | - Ján Petrovaj
- Department of Chemistry, P.O. Box 55, 00014 University of Helsinki, Finland
| | - Tapani Viitala
- Centre for Drug Research, Division of Pharmaceutical Biosciences, Faculty of Pharmacy, P.O. Box 56, 00014 University of Helsinki, Finland.
| | - Susanne K Wiedmer
- Department of Chemistry, P.O. Box 55, 00014 University of Helsinki, Finland.
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Wang D, Wu Z, Gao A, Zhang W, Kang C, Tao Q, Yang P. Soft landing of cell-sized vesicles on solid surfaces for robust vehicle capture/release. SOFT MATTER 2015; 11:3094-3099. [PMID: 25787226 DOI: 10.1039/c5sm00049a] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Based on a concept of a smooth and steady landing of fragile objects without destruction via a soft cushion, we have developed a model for the soft landing of deformable lipid giant unilamellar vesicles (GUVs) on solid surfaces. The foundation for a successful soft landing is a solid substrate with a two-layer coating, including a bottom layer of positively charged lysozymes and an upper lipid membrane layer. We came to a clear conclusion that anionic GUVs when sedimented on a surface, the vesicle rupture occurs upon the direct contact with the positively charged lysozyme layer due to the strong coulombic interactions. In contrast, certain separation distances was achieved by the insertion of a soft lipid membrane cushion between the charged GUVs and the lysozyme layer, which attenuated the coulombic force and created a mild buffer zone, ensuring the robust capture of GUVs on the substrate without their rupture. The non-covalent bonding facilitated a fully reversible stimuli-responsive capture/release of GUVs from the biomimetic solid surface, which has never been demonstrated before due to the extreme fragility of GUVs. Moreover, the controllable capture/release of cells has been proven to be of vital importance in biotechnology, and similarity the present approach to capture/release cells is expected to open the previously inaccessible avenues of research.
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Affiliation(s)
- Dehui Wang
- Key Laboratory of Applied Surface and Colloids Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710119, China.
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Losada-Pérez P, Khorshid M, Yongabi D, Wagner P. Effect of cholesterol on the phase behavior of solid-supported lipid vesicle layers. J Phys Chem B 2015; 119:4985-92. [PMID: 25812723 DOI: 10.1021/acs.jpcb.5b00712] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The interest in solid-supported biomimetic membranes stems from their utility in nanotechnology and biosensing. In particular, supported lipid vesicles (SLVs) have become popular in both fundamental biophysical studies and pharmaceutical screening applications. It is thus essential to gain information on the structural properties and phase behavior of SLVs. Here we report on a study on the influence of cholesterol on the phase behavior of SLVs of saturated phospholipids by using quartz crystal microbalance with dissipation monitoring, a label-free and nonintrusive surface-sensitive technique. Two complementary approaches have been used, a Voigt-based viscoelastic model yielding shear viscosity temperature profiles and the first-order derivative of the frequency (mass-sensitive) shifts. Anomalies in the shear viscosity and extrema in the first-order derivative frequency curves stand as a token of the main phase transition and provide information on its gradual suppression upon addition of cholesterol. This method proves convenient for its small sample volume needed, its short temperature equilibration time and the non-necessity of external labels. This work can be regarded as a starting point for further studies on more rare lipid systems and different geometries, such as tethered SLVs or biologically relevant vesicles produced by living cells.
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Affiliation(s)
- P Losada-Pérez
- †Institute for Materials Research IMO, Hasselt University, Wetenschapspark 1, B-3590, Diepenbeek, Belgium.,‡Division IMOMEC, IMEC vzw, Wetenschapspark 1, B-3590, Diepenbeek, Belgium
| | - M Khorshid
- †Institute for Materials Research IMO, Hasselt University, Wetenschapspark 1, B-3590, Diepenbeek, Belgium.,§Soft Matter and Biophysics Section, Department of Physics and Astronomy, KU Leuven, Celestijnenlaan 200D bus 2416, B-3001, Leuven, Belgium
| | - D Yongabi
- †Institute for Materials Research IMO, Hasselt University, Wetenschapspark 1, B-3590, Diepenbeek, Belgium
| | - P Wagner
- †Institute for Materials Research IMO, Hasselt University, Wetenschapspark 1, B-3590, Diepenbeek, Belgium.,§Soft Matter and Biophysics Section, Department of Physics and Astronomy, KU Leuven, Celestijnenlaan 200D bus 2416, B-3001, Leuven, Belgium
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Losada-Pérez P, Khorshid M, Hermans C, Robijns T, Peeters M, Jiménez-Monroy K, Truong L, Wagner P. Melittin disruption of raft and non-raft-forming biomimetic membranes: A study by quartz crystal microbalance with dissipation monitoring. Colloids Surf B Biointerfaces 2014; 123:938-44. [DOI: 10.1016/j.colsurfb.2014.10.048] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2014] [Revised: 10/20/2014] [Accepted: 10/24/2014] [Indexed: 10/24/2022]
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Effect of tetracaine on DMPC and DMPC+cholesterol biomembrane models: Liposomes and monolayers. Colloids Surf B Biointerfaces 2014; 116:63-71. [DOI: 10.1016/j.colsurfb.2013.12.042] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2013] [Revised: 12/17/2013] [Accepted: 12/18/2013] [Indexed: 11/21/2022]
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Wang Y, Liu Y, Deberg HA, Nomura T, Hoffman MT, Rohde PR, Schulten K, Martinac B, Selvin PR. Single molecule FRET reveals pore size and opening mechanism of a mechano-sensitive ion channel. eLife 2014; 3:e01834. [PMID: 24550255 PMCID: PMC3925968 DOI: 10.7554/elife.01834] [Citation(s) in RCA: 97] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023] Open
Abstract
The mechanosensitive channel of large conductance, which serves as a model system for mechanosensitive channels, has previously been crystallized in the closed form, but not in the open form. Ensemble measurements and electrophysiological sieving experiments show that the open-diameter of the channel pore is >25 Å, but the exact size and whether the conformational change follows a helix-tilt or barrel-stave model are unclear. Here we report measurements of the distance changes on liposome-reconstituted MscL transmembrane α-helices, using a ‘virtual sorting’ single-molecule fluorescence energy transfer. We observed directly that the channel opens via the helix-tilt model and the open pore reaches 2.8 nm in diameter. In addition, based on the measurements, we developed a molecular dynamics model of the channel structure in the open state which confirms our direct observations. DOI:http://dx.doi.org/10.7554/eLife.01834.001 Bacterial cells are full of fluid, and they will burst if they are not able to respond to a build up of pressure. Fortunately, the membrane of a bacterial cell contains channels that can detect the increased mechanical stress on the cell membrane and then open to relieve the pressure. In many bacterial cells, the last defence against the cell exploding is called the mechanosensitive channel of large conductance (MscL). This is made of five proteins, each of which consists of TM1 and TM2 helixes, which are responsible for opening and closing the channel. Two models have been proposed to explain how the channels are opened. In the barrel-stave model, the TM1 helix moves, while the TM2 helix remains stationary. This results in an open pore that is lined with TM1 and TM2 helixes in the same way that wooden staves line a barrel. In the helix-tilt model, both helixes tilt towards the membrane to open the channel. Wang et al. have now used a technique called single-molecule fluorescence resonance energy transfer (FRET) to explore the structure of the open channel in E. coli in order to determine which model is correct. In this technique an individual channel is labeled with two different fluorescent molecules. By illuminating the channel with light of a wavelength that excites the first fluorescent molecule, and measuring the strength of the fluorescence from the second molecule, it is possible to work out the distance between the two molecules. From this, the structure of the channel and how it opens and closes can be explored. Previous attempts to measure the diameters of open channels using fluorescence techniques have suffered from issues caused by the use of large numbers of fluorescent molecules. This has made it necessary to use computational modeling to extract the required data. By looking at a series of individual proteins, Wang et al. overcame these problems and found that the diameter of the fully open pore is 2.8 nm. The result provides strong support for the helix-tilt model. DOI:http://dx.doi.org/10.7554/eLife.01834.002
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Affiliation(s)
- Yong Wang
- Department of Physics, University of Illinois at Urbana-Champaign, Urbana, United States
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Gebril AM, Lamprou DA, Alsaadi MM, Stimson WH, Mullen AB, Ferro VA. Assessment of the antigen-specific antibody response induced by mucosal administration of a GnRH conjugate entrapped in lipid nanoparticles. NANOMEDICINE-NANOTECHNOLOGY BIOLOGY AND MEDICINE 2013; 10:971-9. [PMID: 24374362 DOI: 10.1016/j.nano.2013.12.005] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/27/2012] [Revised: 11/28/2013] [Accepted: 12/18/2013] [Indexed: 01/14/2023]
Abstract
UNLABELLED Vaccines administered parenterally have been developed against gonadotrophin-releasing hormone (GnRH) for anti-fertility and anti-cancer purposes. The aim of this study was to demonstrate whether mucosal delivery using GnRH immunogens entrapped in lipid nanoparticles (LNP) could induce anti-GnRH antibody titers. Immunogens consisting of KLH (keyhole limpet hemocyanin) conjugated to either GnRH-I or GnRH-III analogues were entrapped in LNP. Loaded non-ionic surfactant vesicles (NISVs) were administered subcutaneously, while nasal delivery was achieved using NISV in xanthan gum and oral delivery using NISV containing deoxycholate (bilosomes). NISV and bilosomes had similar properties: they were spherical, in the nanometre size range, with a slightly negative zeta potential and surface properties that changed with protein loading and inclusion of xanthan gum. Following immunization in female BALB/c mice, systemic antibody responses were similar for both GnRH-I and GnRH-III immunization. Only nasal delivery proved to be successful in terms of producing systemic and mucosal antibodies. FROM THE CLINICAL EDITOR The main research question addressed in this study was whether mucosal delivery using gonadotrophin-releasing hormone immunogens entrapped in lipid nanoparticles could induce anti-GnRH antibody titers. Only nasal delivery proved to be successful in terms of producing systemic and mucosal antibodies with this approach.
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Affiliation(s)
- Ayman M Gebril
- Strathclyde Institute of Pharmacy and Biomedical Science, University of Strathclyde, Glasgow, UK; Faculty of Veterinary Medicine, Omar Al-Mukhtar University, Al-Bayda, Libya
| | - Dimitrios A Lamprou
- Strathclyde Institute of Pharmacy and Biomedical Science, University of Strathclyde, Glasgow, UK
| | - Manal M Alsaadi
- Strathclyde Institute of Pharmacy and Biomedical Science, University of Strathclyde, Glasgow, UK
| | - William H Stimson
- Strathclyde Institute of Pharmacy and Biomedical Science, University of Strathclyde, Glasgow, UK
| | - Alexander B Mullen
- Strathclyde Institute of Pharmacy and Biomedical Science, University of Strathclyde, Glasgow, UK
| | - Valerie A Ferro
- Strathclyde Institute of Pharmacy and Biomedical Science, University of Strathclyde, Glasgow, UK.
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Li H, Frith J, Cooper-White JJ. Modulation of Stem Cell Adhesion and Morphology via Facile Control over Surface Presentation of Cell Adhesion Molecules. Biomacromolecules 2013; 15:43-52. [DOI: 10.1021/bm4012562] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Haiqing Li
- Tissue Engineering and Microfluidic Laboratory, Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, Corner of Cooper and College Road, Brisbane, 4072 Queensland, Australia
| | - Jessica Frith
- Tissue Engineering and Microfluidic Laboratory, Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, Corner of Cooper and College Road, Brisbane, 4072 Queensland, Australia
| | - Justin J. Cooper-White
- Tissue Engineering and Microfluidic Laboratory, Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, Corner of Cooper and College Road, Brisbane, 4072 Queensland, Australia
- School of Chemical Engineering, The University of Queensland, College Road, Brisbane, 4072 Queensland, Australia
- Division of Materials Science and Engineering, CSIRO, Clayton, 3169 Victoria, Australia
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Onyesom I, Lamprou DA, Sygellou L, Owusu-Ware SK, Antonijevic M, Chowdhry BZ, Douroumis D. Sirolimus encapsulated liposomes for cancer therapy: physicochemical and mechanical characterization of sirolimus distribution within liposome bilayers. Mol Pharm 2013; 10:4281-93. [PMID: 24099044 DOI: 10.1021/mp400362v] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Sirolimus has recently been introduced as a therapeutic agent for breast and prostate cancer. In the current study, conventional and Stealth liposomes were used as carriers for the encapsulation of sirolimus. The physicochemical characteristics of the sirolimus liposome nanoparticles were investigated including the particle size, zeta potential, stability and membrane integrity. In addition atomic force microscopy was used to study the morphology, surface roughness and mechanical properties such as elastic modulus deformation and deformation. Sirolimus encapsulation in Stealth liposomes showed a high degree of deformation and lower packing density especially for dipalmitoyl-phosphatidylcholine (DPPC) Stealth liposomes compared to unloaded. Similar results were obtained by differential scanning calorimetry (DSC) studies; sirolimus loaded liposomes were found to result in a distorted state of the bilayer. X-ray photon electron (XPS) analysis revealed a uniform distribution of sirolimus in multilamellar DPPC Stealth liposomes compared to a nonuniform, greater outer layer lamellar distribution in distearoylphosphatidylcholine (DSPC) Stealth liposomes.
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Affiliation(s)
- Ichioma Onyesom
- School of Science, University of Greenwich , Medway Campus, Chatham Maritime, Kent ME4 4TB, U.K
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40
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Liang H, Tuppurainen JP, Lehtinen J, Viitala T, Yliperttula M. Non-labeled monitoring of targeted liposome interactions with a model receptor surface: effect of flow rate and water content. Eur J Pharm Sci 2013; 50:492-501. [PMID: 23981331 DOI: 10.1016/j.ejps.2013.08.011] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2013] [Revised: 08/06/2013] [Accepted: 08/12/2013] [Indexed: 11/18/2022]
Abstract
In this study, we present a novel in vitro approach that utilizes two surface-sensitive and label-free techniques, i.e. surface plasmon resonance (SPR) and quartz crystal microbalance (QCM), to study the interfacial events during liposome-target surface interactions. The flow channels of SPR and QCM devices were first synchronized via hydrodynamic modeling. Biotin-streptavidin was used as a model pair and self-assembled monolayers (SAMs) were utilized as model surfaces for targeted liposome-surface interaction studies. The interactions between biotin-liposomes and the streptavidin-biotin-SAM surfaces were investigated under controlled shear flows using the synchronized SPR and QCM devices. The response of the liposome interaction was monitored as a function of the flow rate. The affinity and the amount of bound liposome indicated that the increased flow rate improved the binding of the targeted liposomes to the model membrane surfaces. The combined use of the synchronized SPR and QCM devices for nanoparticle interaction studies clearly demonstrates the effect of the flow rate (or the shear stress) on the liposome binding. Our results suggest that the binding of liposomes to the model membranes is flow rate and shear stress regulated. Thus, the flow rate (or the shear stress), which is usually neglected, should be taken into account during the development and optimization of targeted liposome formulations. In addition, the water content within the liposome layer (including the water inside the liposomes and the water between the liposomes) had a significant influence on the visco-elasticity and the binding kinetics to the SAM surfaces.
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Affiliation(s)
- Huamin Liang
- Division of Biopharmaceutics and Pharmacokinetics, Faculty of Pharmacy, University of Helsinki, P.O. Box 56, FI-00014 Helsinki, Finland.
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41
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Duarte AA, Filipe SL, Abegão LMG, Gomes PJ, Ribeiro PA, Raposo M. Adsorption kinetics of DPPG liposome layers: a quantitative analysis of surface roughness. MICROSCOPY AND MICROANALYSIS : THE OFFICIAL JOURNAL OF MICROSCOPY SOCIETY OF AMERICA, MICROBEAM ANALYSIS SOCIETY, MICROSCOPICAL SOCIETY OF CANADA 2013; 19:867-875. [PMID: 23742922 DOI: 10.1017/s1431927613001621] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Roughness of a positively charged poly(allylamine hydrochloride) (PAH) polyelectrolyte surface was shown to strongly influence the adsorption of 1.2-dipalmitoyl-sn-3-glycero-[phosphorrac-(1-glycerol)] (DPPG) liposomes on it. The adsorption kinetic curves of DPPG liposomes onto a low-roughness PAH layer reveal an adsorbed amount of 5 mg/m², pointing to liposome rupture, whereas a high-roughness surface leads to adsorbed amounts of 51 mg/m², signifying adsorption of intact liposomes. The adsorption kinetic parameters calculated from adsorption kinetic curves allow us to conclude that the adsorption process is due to electrostatic interactions and also depends on processes such as diffusion and reorganization of lipids on the surface. Analysis of the roughness kinetics enabled us to calculate a growth exponent of 0.19 ± 0.07 and a roughness exponent of around 0.84, revealing that DPPG liposomes adsorbed onto rough surfaces follow the Villain self-affine model. By relating self-affine surfaces with hydrophobicity, the liposome integrity was explained by the reduction in the number of water molecules on the PAH surface, contributing to counterion anchorage near PAH ionic groups, reducing the liposome/PAH layer electrostatic forces and, consequently, avoiding liposome rupture.
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Affiliation(s)
- Andreia A Duarte
- Departamento de Física, CEFITEC, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal
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42
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Olesen K, Karlsson R, Lind U, Davidson M, Blomberg A, Karlsson A. Detection of ligand–receptor binding using microfluidic frontal affinity chromatography on proteoliposomes derived directly from native cell membranes. J Chromatogr B Analyt Technol Biomed Life Sci 2013; 931:84-9. [DOI: 10.1016/j.jchromb.2013.05.010] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2012] [Revised: 04/26/2013] [Accepted: 05/14/2013] [Indexed: 11/26/2022]
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43
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Anesthetics interacting with lipid rafts. Eur J Pharm Sci 2012; 48:153-65. [PMID: 23142844 DOI: 10.1016/j.ejps.2012.10.023] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2012] [Revised: 10/31/2012] [Accepted: 10/31/2012] [Indexed: 12/26/2022]
Abstract
The exact mechanism by which anesthetics induce cell membrane-mediated modifications is still an open question. Although the fluidization effect of the anesthetic molecules on the cellular membrane is widely recognized, it is not known if anesthetics show any preference for specific membrane domains, namely the lipid rafts. The importance of these membrane micro-domains derives from the fact that they have been associated with cell signaling pathways, as well as with specific drug interactions. The objective of this work is to contribute for the elucidation of this question through the comparison of the anesthetic interactions with membranes of various lipid compositions. Liposomes prepared with an equimolar mixture of POPC, sphingomyelin and cholesterol, were chosen as models for lipid rafts. The interactions of these liposomes with two local anesthetics, tetracaine and lidocaine, and one general anesthetic, propofol, were studied. The effect of cholesterol was investigated by comparing anesthetic interactions with POPC/SM liposomes and POPC/SM/CHOL liposomes. The following experimental techniques were used: quartz crystal microbalance with dissipation, differential scanning calorimetry and phosphorus nuclear magnetic resonance. Although the liposomes investigated by the different techniques are not in the same conditions, it is possible to assemble the information obtained from all experimental techniques employed to reach a general conclusion. Tetracaine interacts more with raftlike domains, lidocaine induces stronger modifications on POPC/SM liposomes and the results for propofol are not fully conclusive but it seems to be the least prone to lipid interactions. The results were compared with those obtained with DMPC-containing liposomes, reported in a previous work.
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