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Krawinski P, Smithers L, van Dalsen L, Boland C, Ostrovitsa N, Pérez J, Caffrey M. 7.10 MAG. A Novel Host Monoacylglyceride for In Meso (Lipid Cubic Phase) Crystallization of Membrane Proteins. CRYSTAL GROWTH & DESIGN 2024; 24:2985-3001. [PMID: 38585376 PMCID: PMC10995948 DOI: 10.1021/acs.cgd.4c00087] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/19/2024] [Revised: 03/06/2024] [Accepted: 03/06/2024] [Indexed: 04/09/2024]
Abstract
A novel monoacylglycerol, 7.10 MAG, has been produced for use in the in meso (lipid cubic phase) crystallization of membrane proteins and complexes. 7.10 MAG differs from monoolein, the most extensively used lipid for in meso crystallization, in that it is shorter in chain length by one methylene and its cis olefinic bond is two carbons closer to the glycerol headgroup. These changes in structure alter the phase behavior of the hydrated lipid and the microstructure of the corresponding mesophases formed. Temperature-composition phase diagrams for 7.10 MAG have been constructed using small- and wide-angle X-ray scattering over a range of temperatures and hydration levels that span those used for crystallization. The phase diagrams include lamellar crystalline, fluid isotropic, lamellar liquid-crystalline, cubic-Ia3d, and cubic-Pn3m phases, as observed with monoolein. Conspicuous by its absence is the inverted hexagonal phase which is rationalized on the basis of 7.10 MAG's chemical constitution. The cubic phase prepared with the new lipid facilitates the growth of crystals that were used to generate high-resolution structures of intramembrane β-barrel and α-helical proteins. Compatibility of fully hydrated 7.10 MAG with cholesterol and phosphatidylcholine means that these two lipids can be used as additives to optimize crystallogenesis in screening trials with 7.10 MAG as the host lipid.
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Affiliation(s)
- Pawel Krawinski
- Membrane
Structural and Functional Biology Group, School of Medicine and School
of Biochemistry and Immunology, Trinity
College Dublin, Dublin D02 R590, Ireland
| | - Luke Smithers
- Membrane
Structural and Functional Biology Group, School of Medicine and School
of Biochemistry and Immunology, Trinity
College Dublin, Dublin D02 R590, Ireland
| | - Leendert van Dalsen
- Membrane
Structural and Functional Biology Group, School of Medicine and School
of Biochemistry and Immunology, Trinity
College Dublin, Dublin D02 R590, Ireland
- School
of Chemistry, Trinity College Dublin, Dublin D02 R590, Ireland
| | - Coilin Boland
- Membrane
Structural and Functional Biology Group, School of Medicine and School
of Biochemistry and Immunology, Trinity
College Dublin, Dublin D02 R590, Ireland
| | - Nikita Ostrovitsa
- School
of Chemistry, Trinity College Dublin, Dublin D02 R590, Ireland
| | - Javier Pérez
- SWING
Beamline, Synchrotron Soleil, Saint-Aubin 91190, France
| | - Martin Caffrey
- Membrane
Structural and Functional Biology Group, School of Medicine and School
of Biochemistry and Immunology, Trinity
College Dublin, Dublin D02 R590, Ireland
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2
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Blanco-Fernández G, Blanco-Fernandez B, Fernández-Ferreiro A, Otero-Espinar FJ. Lipidic lyotropic liquid crystals: Insights on biomedical applications. Adv Colloid Interface Sci 2023; 313:102867. [PMID: 36889183 DOI: 10.1016/j.cis.2023.102867] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Revised: 02/26/2023] [Accepted: 02/26/2023] [Indexed: 03/04/2023]
Abstract
Liquid crystals (LCs) possess unique physicochemical properties, translatable into a wide range of applications. To date, lipidic lyotropic LCs (LLCs) have been extensively explored in drug delivery and imaging owing to the capability to encapsulate and release payloads with different characteristics. The current landscape of lipidic LLCs in biomedical applications is provided in this review. Initially, the main properties, types, methods of fabrication and applications of LCs are showcased. Then, a comprehensive discussion of the main biomedical applications of lipidic LLCs accordingly to the application (drug and biomacromolecule delivery, tissue engineering and molecular imaging) and route of administration is examined. Further discussion of the main limitations and perspectives of lipidic LLCs in biomedical applications are also provided. STATEMENT OF SIGNIFICANCE: Liquid crystals (LCs) are those systems between a solid and liquid state that possess unique morphological and physicochemical properties, translatable into a wide range of biomedical applications. A short description of the properties of LCs, their types and manufacturing procedures is given to serve as a background to the topic. Then, the latest and most innovative research in the field of biomedicine is examined, specifically the areas of drug and biomacromolecule delivery, tissue engineering and molecular imaging. Finally, prospects of LCs in biomedicine are discussed to show future trends and perspectives that might be utilized. This article is an ampliation, improvement and actualization of our previous short forum article "Bringing lipidic lyotropic liquid crystal technology into biomedicine" published in TIPS.
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Affiliation(s)
- Guillermo Blanco-Fernández
- Pharmacology, Pharmacy and Pharmaceutical Technology Department, Faculty of Pharmacy, University of Santiago de Compostela (USC), Santiago de Compostela, Spain; Paraquasil Group, Health Research Institute of Santiago de Compostela (FIDIS), Santiago de Compostela, Spain; Institute of Materials (iMATUS), University of Santiago de Compostela (USC), Santiago de Compostela, Spain
| | - Bárbara Blanco-Fernandez
- CIBER in Bioengineering, Biomaterials and Nanomedicine, CIBER-BBN, Madrid, Spain; Institute for Bioengineering of Catalonia (IBEC), The Barcelona Institute of Science and Technology, Baldiri Reixac 10-12, Barcelona 08028, Spain.
| | - Anxo Fernández-Ferreiro
- Pharmacology Group, Health Research Institute of Santiago de Compostela (FIDIS), Santiago de Compostela, Spain; Pharmacy Department, University Clinical Hospital of Santiago de Compostela (SERGAS), Santiago de Compostela, Spain.
| | - Francisco J Otero-Espinar
- Pharmacology, Pharmacy and Pharmaceutical Technology Department, Faculty of Pharmacy, University of Santiago de Compostela (USC), Santiago de Compostela, Spain; Paraquasil Group, Health Research Institute of Santiago de Compostela (FIDIS), Santiago de Compostela, Spain; Institute of Materials (iMATUS), University of Santiago de Compostela (USC), Santiago de Compostela, Spain.
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3
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Monoolein Cubic Phase Containing Cellulose Nanocrystal as a Release Modulator for a Negatively Charged Compound. BIOTECHNOL BIOPROC E 2022. [DOI: 10.1007/s12257-020-0365-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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4
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Berntsen P, Darmanin C, Balaur E, Flueckiger L, Kozlov A, Roque FG, Adams P, Binns J, Wells D, Hadian Jazi M, Saha S, Hawley A, Ryan T, Mudie S, Kirby N, Abbey B, Martin AV. Stability, flow alignment and a phase transition of the lipidic cubic phase during continuous flow injection. J Colloid Interface Sci 2022; 611:588-598. [PMID: 34973655 DOI: 10.1016/j.jcis.2021.12.110] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2021] [Revised: 11/30/2021] [Accepted: 12/16/2021] [Indexed: 10/19/2022]
Abstract
Continuous flow injection is a key technology for serial crystallography measurements of protein crystals suspended in the lipidic cubic phase (LCP). To date, there has been little discussion in the literature regarding the impact of the injection process itself on the structure of the lipidic phase. This is despite the fact that the phase of the injection matrix is critical for the flow properties of the stream and potentially for sample stability. Here we report small-angle X-ray scattering measurements of a monoolein:water mixture during continuous delivery using a high viscosity injector. We observe both an alignment and modification of the LCP as a direct result of the injection process. The orientation of the cubic lattice with respect to the beam was estimated based on the anisotropy of the diffraction pattern and does not correspond to a single low order zone axis. The solvent fraction was also observed to impact the stability of the cubic phase during injection. In addition, depending on the distance traveled by the lipid after exiting the needle, the phase is observed to transition from a pure diamond phase (Pn3m) to a mixture containing both gyriod (Ia3d) and lamellar (Lα) phases. Finite element modelling of the observed phase behaviour during injection indicates that the pressure exerted on the lipid stream during extrusion accounts for the variations in the phase composition of the monoolein:water mixture.
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Affiliation(s)
- Peter Berntsen
- ARC Centre of Excellence for Advanced Molecular Imaging, La Trobe University, Bundoora 3086, VIC, Australia
| | - Connie Darmanin
- ARC Centre of Excellence for Advanced Molecular Imaging, La Trobe University, Bundoora 3086, VIC, Australia.
| | - Eugeniu Balaur
- ARC Centre of Excellence for Advanced Molecular Imaging, La Trobe University, Bundoora 3086, VIC, Australia
| | - Leonie Flueckiger
- ARC Centre of Excellence for Advanced Molecular Imaging, La Trobe University, Bundoora 3086, VIC, Australia
| | - Alex Kozlov
- ARC Centre of Excellence for Advanced Molecular Imaging, The University of Melbourne, Parkville 3010, VIC, Australia
| | - Francisco G Roque
- ARC Centre of Excellence for Advanced Molecular Imaging, La Trobe University, Bundoora 3086, VIC, Australia
| | - Patrick Adams
- School of Science, RMIT University, Melbourne 3000 Australia
| | - Jack Binns
- School of Science, RMIT University, Melbourne 3000 Australia
| | - Daniel Wells
- ARC Centre of Excellence for Advanced Molecular Imaging, La Trobe University, Bundoora 3086, VIC, Australia
| | - Marjan Hadian Jazi
- ARC Centre of Excellence for Advanced Molecular Imaging, La Trobe University, Bundoora 3086, VIC, Australia
| | - Saumitra Saha
- ARC Centre of Excellence for Advanced Molecular Imaging, The University of Melbourne, Parkville 3010, VIC, Australia
| | - Adrian Hawley
- The Australian Nuclear Science Technology Organisation, The Australian Synchrotron, Clayton, Vic, Australia
| | - Tim Ryan
- The Australian Nuclear Science Technology Organisation, The Australian Synchrotron, Clayton, Vic, Australia
| | - Stephen Mudie
- The Australian Nuclear Science Technology Organisation, The Australian Synchrotron, Clayton, Vic, Australia
| | - Nigel Kirby
- The Australian Nuclear Science Technology Organisation, The Australian Synchrotron, Clayton, Vic, Australia
| | - Brian Abbey
- ARC Centre of Excellence for Advanced Molecular Imaging, La Trobe University, Bundoora 3086, VIC, Australia
| | - Andrew V Martin
- School of Science, RMIT University, Melbourne 3000 Australia.
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5
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Kim JA, Parkt SC, Alle M, Park SH, Kim TH, Kim JC. Monoolein Cubic Phase Including Hydrophobized Modified Gelatin and Poly(ethyleneimine) and Its Effect on the Stability of Retinyl Palmitate. JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY 2021; 21:5583-5591. [PMID: 33980367 DOI: 10.1166/jnn.2021.19459] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Retinyl palmitate (RP) was added in monoolein (MO) cubic phase including decanoyl poly(ethyleneimine) (DePEI) and decanoyl gelatin (DeGel) in its water channel. RP, DePEI, and DeGel was incorporated In the cubic phase without structural disintegration, as confirmed by transmission electron microscopy. Differential scanning calorimetric and polarized optical microscopic analysis showed that adding the additives reduces phase transition temperature of cubic phase by 2 °C to 3 °C. The time-dependent chemical stability of RP added in the cubic phase was analyzed for 4 weeks at 5 °C, 20 °C, 30 °C, and 40 °C, using RP loaded in o/w emulsion as a control. The chemical stability of RP added in cubic phase containing DePEI and DeGel was somewhat higher as compared to the RP added in the cubic phase without DeGel/DePEI, possibly because DeGel/DePEI complex might shield RP from its environment by blocking the water channels inside the cubic phase. Moreover, the chemical stability of RP added in the cubic phase was comparatively higher than RP added in o/w emulsion.
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Affiliation(s)
- Jin Ah Kim
- Department of Biomedical Science & Institute of Bioscience and Biotechnology, Kangwon National University Chuncheon, 24341, Republic of Korea
| | - Soo Chan Parkt
- Department of Biomedical Science & Institute of Bioscience and Biotechnology, Kangwon National University Chuncheon, 24341, Republic of Korea
| | - Madhusudhan Alle
- Department of Biomedical Science & Institute of Bioscience and Biotechnology, Kangwon National University Chuncheon, 24341, Republic of Korea
| | - Seok Ho Park
- Department of Biomedical Science & Institute of Bioscience and Biotechnology, Kangwon National University Chuncheon, 24341, Republic of Korea
| | - Tae Hoon Kim
- Department of Biomedical Science & Institute of Bioscience and Biotechnology, Kangwon National University Chuncheon, 24341, Republic of Korea
| | - Jin-Chui Kim
- Department of Biomedical Science & Institute of Bioscience and Biotechnology, Kangwon National University Chuncheon, 24341, Republic of Korea
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6
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Waibl F, Liedl KR, Rupp B. Correcting cis-trans-transgressions in macromolecular structure models. FEBS J 2021; 289:2793-2804. [PMID: 33880875 DOI: 10.1111/febs.15884] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2021] [Revised: 04/01/2021] [Accepted: 04/16/2021] [Indexed: 11/27/2022]
Abstract
Many macromolecular X-ray and cryo-EM structure models deposited in the PDB contain biologically relevant small molecule ligands with unsaturated fatty acid acyl chains, whose cis-trans stereochemistry is incorrect. The molecules are either not properly defined in their stereochemical restraint files, or the proper stereochemistry is neglected during model building. Often, the same molecules appear in deposited models in both isomeric configurations, one of which is almost always incorrect, and the use of the same moiety (HET) identifier and restraint files in model refinement is wrong. We present case studies of frequently occurring molecules and a compilation of identified cases of C-C=C-C cis-trans geometry in the deposited structure models. Full listings of cis/trans torsion angles are provided for models with commonly occurring molecules to assist identification and correction of cis-trans errors and prevent inadvertent use of incorrect models. Caveats for users, advice for modellers and suggestions for remediation efforts with a simple but effective restraint file modification are provided.
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Affiliation(s)
- Franz Waibl
- Department of General, Inorganic and Theoretical Chemistry, University of Innsbruck, Innsbruck, Austria
| | - Klaus R Liedl
- Department of General, Inorganic and Theoretical Chemistry, University of Innsbruck, Innsbruck, Austria
| | - Bernhard Rupp
- k. -k.Hofkristallamt, San Diego, CA, USA.,Institute of Genetic Epidemiology, Medical University of Innsbruck, Innsbruck, Austria
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7
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Park SH, Zhao F, Park SC, Kim JC. Gelatin-loaded cubosomes stabilized with hydrophobically modified quaternized cellulose nanofiber and their pH-dependent release property. J Biomater Appl 2021; 35:1109-1118. [PMID: 33632005 DOI: 10.1177/0885328221995924] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Monoolein cubic phase immobilizing hydrophobically modified gelatin (HmGel) in its water channel was prepared by a melt-hydration method. The cubic phase was micronized into cubosomes by using hydrophobically modified quaternized cellulose nanofiber (HmQCNF) as a stabilizer. The phase transition temperature of the cubic phase was about 68-70 °C. Small angle X-ray diffraction revealed that HmGel-loaded cubosome stabilized with HmCNF was a diamond type of cubic phase. HmGel-loaded cubosomes stailized with HmQCNF were dependent on the pH value in terms of the release of their payload (i.e, methylene blue) much more strongly than HmGel-loaded cubosomes stabilized with Pluronic F127.
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Affiliation(s)
- Seok Ho Park
- Department of Biomedical Science & Institute of Bioscience and Biotechnology, Kangwon National University, Chuncheon, Republic of Korea These authors contributed equally to this study
| | - Fanyu Zhao
- Department of Biomedical Science & Institute of Bioscience and Biotechnology, Kangwon National University, Chuncheon, Republic of Korea These authors contributed equally to this study
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8
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Salt-responsive monoolein cubic phase containing polyethyleneimine gel. JOURNAL OF POLYMER RESEARCH 2020. [DOI: 10.1007/s10965-020-02145-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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9
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Park D, Park SH, Kim JC. In vitro Anti-cancer Efficacy and Cellular Interaction of Cubic Phases Containing Cinnamic Acid, Poly(ethyleneimine), and Doxorubicin. BIOTECHNOL BIOPROC E 2020. [DOI: 10.1007/s12257-019-0123-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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10
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van Dalsen L, Weichert D, Caffrey M. In meso crystallogenesis. Compatibility of the lipid cubic phase with the synthetic digitonin analogue, glyco-diosgenin. J Appl Crystallogr 2020; 53:530-535. [PMID: 32280324 PMCID: PMC7133060 DOI: 10.1107/s1600576720002289] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2020] [Accepted: 02/18/2020] [Indexed: 11/10/2022] Open
Abstract
Digitonin has long been used as a mild detergent for extracting proteins from membranes for structure and function studies. As supplied commercially, digitonin is inhomogeneous and requires lengthy pre-treatment for reliable downstream use. Glyco-diosgenin (GDN) is a recently introduced synthetic surfactant with features that mimic digitonin. It is available in homogeneously pure form. GDN is proving to be a useful detergent, particularly in the area of single-particle cryo-electron microscopic studies of membrane integral proteins. With a view to using it as a detergent for crystallization trials by the in meso or lipid cubic phase method, it was important to establish the carrying capacity of the cubic mesophase for GDN. This was quantified in the current study using small-angle X-ray scattering for mesophase identification and phase microstructure characterization as a function of temperature and GDN concentration. The data show that the lipid cubic phase formed by hydrated monoolein tolerates GDN to concentrations orders of magnitude in excess of those used for membrane protein studies. Thus, having GDN in a typical membrane protein preparation should not deter use of the in meso method for crystallogenesis.
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Affiliation(s)
- Leendert van Dalsen
- Membrane Structural and Functional Biology Group, School of Medicine and School of Biochemistry and Immunology, Trinity College Dublin, Dublin D02 R590, Ireland
| | - Dietmar Weichert
- Membrane Structural and Functional Biology Group, School of Medicine and School of Biochemistry and Immunology, Trinity College Dublin, Dublin D02 R590, Ireland
| | - Martin Caffrey
- Membrane Structural and Functional Biology Group, School of Medicine and School of Biochemistry and Immunology, Trinity College Dublin, Dublin D02 R590, Ireland
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Barriga HMG, Holme MN, Stevens MM. Cubosomes: The Next Generation of Smart Lipid Nanoparticles? Angew Chem Int Ed Engl 2019; 58:2958-2978. [PMID: 29926520 PMCID: PMC6606436 DOI: 10.1002/anie.201804067] [Citation(s) in RCA: 260] [Impact Index Per Article: 52.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2018] [Revised: 06/12/2018] [Indexed: 12/13/2022]
Abstract
Cubosomes are highly stable nanoparticles formed from the lipid cubic phase and stabilized by a polymer based outer corona. Bicontinuous lipid cubic phases consist of a single lipid bilayer that forms a continuous periodic membrane lattice structure with pores formed by two interwoven water channels. Cubosome composition can be tuned to engineer pore sizes or include bioactive lipids, the polymer outer corona can be used for targeting and they are highly stable under physiological conditions. Compared to liposomes, the structure provides a significantly higher membrane surface area for loading of membrane proteins and small drug molecules. Owing to recent advances, they can be engineered in vitro in both bulk and nanoparticle formats with applications including drug delivery, membrane bioreactors, artificial cells, and biosensors. This review outlines recent advances in cubosome technology enabling their application and provides guidelines for the rational design of new systems for biomedical applications.
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Affiliation(s)
- Hanna M. G. Barriga
- Department of Medical Biochemistry and Biophysics, Karolinska Institute, Stockholm, Sweden
| | - Margaret N. Holme
- Department of Medical Biochemistry and Biophysics, Karolinska Institute, Stockholm, Sweden
| | - Molly M. Stevens
- Department of Medical Biochemistry and Biophysics, Karolinska Institute, Stockholm, Sweden
- Departments of Materials and Bioengineering and Institute of Biomedical Engineering, Imperial College London, London, UK
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12
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Monoolein cubic phase containing poly(hydroxyethyl acrylate-co-propyl methacrylate-co-methacrylic acid) and its electric field-driven release property. J IND ENG CHEM 2019. [DOI: 10.1016/j.jiec.2018.10.019] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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13
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Park SH, Kim JC. Complexation-responsive monoolein cubic phase containing extract of Bambusae Caulis in Taeniam. INT J POLYM MATER PO 2018. [DOI: 10.1080/00914037.2018.1539986] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Seok Ho Park
- Department of Medical Biomaterials Engineering, College of Biomedical Science and Institute of Bioscience and Biotechnology, Kangwon National University, Chunchon, Republic of Korea
| | - Jin-Chul Kim
- Department of Medical Biomaterials Engineering, College of Biomedical Science and Institute of Bioscience and Biotechnology, Kangwon National University, Chunchon, Republic of Korea
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14
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Badie H, Abbas H. Novel small self-assembled resveratrol-bearing cubosomes and hexosomes: preparation, charachterization, and ex vivo permeation. Drug Dev Ind Pharm 2018; 44:2013-2025. [DOI: 10.1080/03639045.2018.1508220] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Hany Badie
- Pharmaceutics and Industrial Pharmacy Department, Faculty of Pharmacy, Cairo University, Cairo, Egypt
| | - Haidy Abbas
- Pharmaceutics Department, Damanhour University, Damanhour, Egypt
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15
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Barriga HMG, Holme MN, Stevens MM. Cubosomen: die nächste Generation intelligenter Lipid‐Nanopartikel? Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201804067] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Hanna M. G. Barriga
- Department of Medical Biochemistry and BiophysicsKarolinska Institute Stockholm Schweden
| | - Margaret N. Holme
- Department of Medical Biochemistry and BiophysicsKarolinska Institute Stockholm Schweden
| | - Molly M. Stevens
- Department of Medical Biochemistry and BiophysicsKarolinska Institute Stockholm Schweden
- Departments of Materials and Bioengineering and Institute of Biomedical EngineeringImperial College London London Großbritannien
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16
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Salah S, Mahmoud AA, Kamel AO. Etodolac transdermal cubosomes for the treatment of rheumatoid arthritis: ex vivo permeation and in vivo pharmacokinetic studies. Drug Deliv 2017; 24:846-856. [PMID: 28535740 PMCID: PMC8240986 DOI: 10.1080/10717544.2017.1326539] [Citation(s) in RCA: 81] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2017] [Revised: 04/27/2017] [Accepted: 05/02/2017] [Indexed: 01/28/2023] Open
Abstract
In this study, transdermal etodolac-loaded cubosomes were developed in order to relieve patient pain and joints stiffness by providing stable etodolac concentration at the targeting sites through controlled drug delivery via the noninvasive skin route with more sustaining and less frequent dosing. Different ratios and percentages of poloxamer 407 and monoolein were used to formulate the cubosomes using emulsification and homogenization processes. The etodolac-loaded cubosomes showed particle size values ranging from 135.95 to 288.35 nm and zeta potential values ranging from -18.40 to -36.10 mV. All the cubosomes offered an encapsulation efficiency value of about 100% and showed drug loading capacity ranging from 1.28 to 6.09%. The in vitro drug release studies revealed a controlled drug release profile with a drug release rate up to 15.08%/h. Increasing poloxamer concentration in etodolac-loaded cubosomes resulted in nanoparticles with less particle size and faster drug release. The particles exhibited cubic and hexagonal shapes. The DSC and X-ray analysis demonstrated that the drug was encapsulated in the cubosomes bicontinuous structures in amorphous form. In addition, investigated cubosomes exhibited fast drug penetration through excited mice skin followed by slower drug penetration for up to 24 h. The pharmacokinetic study in human volunteers showed that the selected etodolac-loaded cubosomes enhanced the bioavailability of etodolac as compared to the oral capsules (266.11%) with evidence of longer half-life and higher MRT that reached 18.86 and 29.55 h, respectively. The etodolac-loaded cubosomes propose a promising system for treatment of arthritis simply through skin application.
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Affiliation(s)
- Salwa Salah
- Department of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmacy, Cairo University, Kasr El-Aini Street, Cairo, Egypt
| | - Azza A. Mahmoud
- Department of Pharmaceutical Technology, National Research Center, Dokki, Cairo, Egypt
- Department of Pharmaceutics and Pharmaceutical Technology, Faculty of Pharmaceutical Sciences and Pharmaceutical Industries, Future University in Egypt, Cairo, Egypt, and
| | - Amany O. Kamel
- Department of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmacy, Ain Shams University, Abbassia, Cairo, Egypt
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17
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Brasnett C, Longstaff G, Compton L, Seddon A. Effects of Cations on the Behaviour of Lipid Cubic Phases. Sci Rep 2017; 7:8229. [PMID: 28811541 PMCID: PMC5557815 DOI: 10.1038/s41598-017-08438-4] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2017] [Accepted: 07/11/2017] [Indexed: 01/12/2023] Open
Abstract
Inverse bicontinuous cubic structures formed by lipids have been demonstrated in a wide variety of applications, from a host matrix for proteins for crystallisation, to templates for nanoscale structures. Recent work has focused on tuning their properties to realize such applications, often by manipulating the structure by introducing other lipids with different properties such as charge or packing. However, they are often prepared in the presence of solutions containing salt, counteracting the effects, for example, charged lipids, and fundamentally changing the structures obtained. Here, we demonstrate the delicate interplay between electrostatic swelling in bicontinuous structures formed by monoolein (MO) doped with both negatively charged dioleyl phosphatidylglycerol (DOPG), and zwitterionic dioleyl phosphatidylethanolamine (DOPE), with the addition of mono- and divalent salts. The effect of adding salt to the charged phase changes the structure from the primitive cubic (\documentclass[12pt]{minimal}
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\begin{document}$${{\bf{Q}}}_{II}^{P}$$\end{document}QIIP) to the double diamond phase (\documentclass[12pt]{minimal}
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\begin{document}$${{\bf{Q}}}_{II}^{D}$$\end{document}QIID) whilst still allowing for modest increases in lattice parameter of up to a nanometer. Contrasting this, the addition of salts to the non-charged phase, has minimal effect on the lattice parameter but now the transition from the (\documentclass[12pt]{minimal}
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\begin{document}$${{\bf{Q}}}_{II}^{D}$$\end{document}QIID) to the inverse hexagonal phase (HII) is observed occurring at higher mole fractions of DOPE than in pure water.
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Affiliation(s)
- Christopher Brasnett
- H.H. Wills Physics Laboratory, Tyndall Avenue, University of Bristol, Bristol, BS8 1FD, UK
| | - Georgia Longstaff
- H.H. Wills Physics Laboratory, Tyndall Avenue, University of Bristol, Bristol, BS8 1FD, UK
| | - Laura Compton
- H.H. Wills Physics Laboratory, Tyndall Avenue, University of Bristol, Bristol, BS8 1FD, UK
| | - Annela Seddon
- H.H. Wills Physics Laboratory, Tyndall Avenue, University of Bristol, Bristol, BS8 1FD, UK. .,Bristol Centre for Functional Nanomaterials, HH Wills Physics Laboratory, Tyndall Avenue, University of Bristol, Bristol, BS8 1FD, UK.
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The cubicon method for concentrating membrane proteins in the cubic mesophase. Nat Protoc 2017; 12:1745-1762. [DOI: 10.1038/nprot.2017.057] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Park D, Yoon DY, Kim JC. Monoolein cubic phase including in situ ionically gelled alginate and its salt-responsive release property. J DISPER SCI TECHNOL 2017. [DOI: 10.1080/01932691.2017.1289848] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Danbi Park
- Department of Medical Biomaterials Engineering, Kangwon National University, Chuncheon, Republic of Korea
| | - Dong youl Yoon
- Department of Medical Biomaterials Engineering, Kangwon National University, Chuncheon, Republic of Korea
| | - Jin-Chul Kim
- Department of Medical Biomaterials Engineering, Kangwon National University, Chuncheon, Republic of Korea
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Mathews PD, Mertins O. Dispersion of chitosan in liquid crystalline lamellar phase: Production of biofriendly hydrogel of nano cubic topology. Carbohydr Polym 2016; 157:850-857. [PMID: 27987999 DOI: 10.1016/j.carbpol.2016.10.071] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2016] [Revised: 09/28/2016] [Accepted: 10/23/2016] [Indexed: 02/04/2023]
Abstract
Bicontinuous cubic phases were produced with introduction of chitosan in phospholipid/water hydrogel, providing composites of defined molecular organization. The ratio of lipid/water was constant and swelling of lipids bilayer is delimited by incorporation of polymer molecules into the structure. By means of synchrotron small angle X-ray scattering we identified topologies of coexisting cubic phases. The expected liquid crystalline Lα lamellar phase was suppressed by 0.2wt% chitosan leading to formation of diamond Pn3m and gyroid Ia3d cubic topology, with close lattice distances. An increment to 0.4wt% chitosan caused large increase in Pn3m lattice distance. However a higher 0.6wt% evolved this phase to a newly acquired primitive Im3m topology. The structuring process of the three-dimensional complex network is principally governed by demands of chitosan physical requirements over lipids bilayers interfacial curvature. The composite hydrogel of specific topologies presents reduced time release of gallic acid and may find application as new material for time-sustained delivery of bioactive compounds.
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Affiliation(s)
- Patrick D Mathews
- Department of Animal Biology, Institute of Biology, State University of Campinas, 13083-970 Campinas, Brazil.
| | - Omar Mertins
- Department of Biophysics, Paulista School of Medicine, Federal University of Sao Paulo, 04023-062 Sao Paulo, Brazil.
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Yoon DY, Kim JC. Hydrophobically modified poly(vinyl alcohol) and boric acid-containing monoolein cubic phase as a glucose-responsive vehicle. Colloids Surf A Physicochem Eng Asp 2016. [DOI: 10.1016/j.colsurfa.2016.07.045] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Li H, Dang L, Yang S, Li J, Wei H. The study of phase behavior and rheological properties of lyotropic liquid crystals in the LAS/AES/H2O system. Colloids Surf A Physicochem Eng Asp 2016. [DOI: 10.1016/j.colsurfa.2016.01.055] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Kumar M, Patil NG, Choudhury CK, Roy S, Ambade AV, Kumaraswamy G. Compact polar moieties induce lipid-water systems to form discontinuous reverse micellar phase. SOFT MATTER 2015; 11:5417-5424. [PMID: 26023767 DOI: 10.1039/c5sm00854a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
The role of molecular interactions in governing lipid mesophase organization is of fundamental interest and has technological implications. Herein, we describe an unusual pathway for monoolein/water reorganization from a bicontinuous mesophase to a discontinuous reverse micellar assembly, directed by the inclusion of polar macromolecules. This pathway is very different from those reported earlier, wherein the Fd3m phase formed only upon addition of apolar oils. Experiments and molecular dynamics simulations indicate that hydrophilic ternary additives capable of inducing discontinuous phase formation must (i) interact strongly with the monoolein head group and (ii) have a compact molecular architecture. We present a detailed investigation that contrasts a monoolein-water system containing polyamidoamine (PAMAM) dendrons with one containing their linear analogs. The Fd3m phase forms only on the addition of PAMAM dendrons but not their linear analogs. Thus, the dendritic architecture of PAMAM plays an important role in determining lipid mesophase behavior. Both dendrons and their linear analogs interact strongly with monoolein through their amine groups. However, while linear polymers adsorb and spread on monoolein, dendrons form aggregates that interact with the lipid. Dendrons induce formation of an intermediate reverse hexagonal phase, which subsequently restructures into the Fd3m phase. Finally, we demonstrate that other additives with compact structures that are known to interact with monoolein, such as branched polyethylenimine and polyhedral silsesquioxane cages, also induce the formation of the Fd3m phase.
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Affiliation(s)
- Manoj Kumar
- Complex Fluids and Polymer Engineering, Polymer Science and Engineering Division, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune 411008, Maharashtra, India.
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Huang CY, Olieric V, Ma P, Panepucci E, Diederichs K, Wang M, Caffrey M. In meso in situ serial X-ray crystallography of soluble and membrane proteins. ACTA CRYSTALLOGRAPHICA. SECTION D, BIOLOGICAL CRYSTALLOGRAPHY 2015; 71:1238-56. [PMID: 26057665 PMCID: PMC4461204 DOI: 10.1107/s1399004715005210] [Citation(s) in RCA: 87] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/30/2015] [Accepted: 03/13/2015] [Indexed: 11/21/2022]
Abstract
The lipid cubic phase (LCP) continues to grow in popularity as a medium in which to generate crystals of membrane (and soluble) proteins for high-resolution X-ray crystallographic structure determination. To date, the PDB includes 227 records attributed to the LCP or in meso method. Among the listings are some of the highest profile membrane proteins, including the β2-adrenoreceptor-Gs protein complex that figured in the award of the 2012 Nobel Prize in Chemistry to Lefkowitz and Kobilka. The most successful in meso protocol to date uses glass sandwich crystallization plates. Despite their many advantages, glass plates are challenging to harvest crystals from. However, performing in situ X-ray diffraction measurements with these plates is not practical. Here, an alternative approach is described that provides many of the advantages of glass plates and is compatible with high-throughput in situ measurements. The novel in meso in situ serial crystallography (IMISX) method introduced here has been demonstrated with AlgE and PepT (alginate and peptide transporters, respectively) as model integral membrane proteins and with lysozyme as a test soluble protein. Structures were solved by molecular replacement and by experimental phasing using bromine SAD and native sulfur SAD methods to resolutions ranging from 1.8 to 2.8 Å using single-digit microgram quantities of protein. That sulfur SAD phasing worked is testament to the exceptional quality of the IMISX diffraction data. The IMISX method is compatible with readily available, inexpensive materials and equipment, is simple to implement and is compatible with high-throughput in situ serial data collection at macromolecular crystallography synchrotron beamlines worldwide. Because of its simplicity and effectiveness, the IMISX approach is likely to supplant existing in meso crystallization protocols. It should prove particularly attractive in the area of ligand screening for drug discovery and development.
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Affiliation(s)
- Chia-Ying Huang
- Membrane Structural and Functional Biology Group, Schools of Medicine and Biochemistry and Immunology, Trinity College, Dublin, Ireland
| | - Vincent Olieric
- Swiss Light Source, Paul Scherrer Institute, CH-5232 Villigen, Switzerland
| | - Pikyee Ma
- Membrane Structural and Functional Biology Group, Schools of Medicine and Biochemistry and Immunology, Trinity College, Dublin, Ireland
| | - Ezequiel Panepucci
- Swiss Light Source, Paul Scherrer Institute, CH-5232 Villigen, Switzerland
| | - Kay Diederichs
- Fachbereich Biologie, Universität Konstanz, M647, D-78457 Konstanz, Germany
| | - Meitian Wang
- Swiss Light Source, Paul Scherrer Institute, CH-5232 Villigen, Switzerland
| | - Martin Caffrey
- Membrane Structural and Functional Biology Group, Schools of Medicine and Biochemistry and Immunology, Trinity College, Dublin, Ireland
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Glycerol monooleate liquid crystalline phases used in drug delivery systems. Int J Pharm 2015; 478:569-87. [DOI: 10.1016/j.ijpharm.2014.11.072] [Citation(s) in RCA: 117] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2014] [Revised: 11/20/2014] [Accepted: 11/29/2014] [Indexed: 12/13/2022]
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Caffrey M. A comprehensive review of the lipid cubic phase or in meso method for crystallizing membrane and soluble proteins and complexes. ACTA CRYSTALLOGRAPHICA SECTION F-STRUCTURAL BIOLOGY COMMUNICATIONS 2015; 71:3-18. [PMID: 25615961 PMCID: PMC4304740 DOI: 10.1107/s2053230x14026843] [Citation(s) in RCA: 179] [Impact Index Per Article: 19.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/29/2014] [Accepted: 12/05/2014] [Indexed: 01/12/2023]
Abstract
A comprehensive and up-to-date review of the lipid cubic phase or in meso method for crystallizing membrane and soluble proteins and complexes is reported. Recent applications of the method for in situ serial crystallography at X-ray free-electron lasers and synchrotrons are described. The lipid cubic phase or in meso method is a robust approach for crystallizing membrane proteins for structure determination. The uptake of the method is such that it is experiencing what can only be described as explosive growth. This timely, comprehensive and up-to-date review introduces the reader to the practice of in meso crystallogenesis, to the associated challenges and to their solutions. A model of how crystallization comes about mechanistically is presented for a more rational approach to crystallization. The possible involvement of the lamellar and inverted hexagonal phases in crystallogenesis and the application of the method to water-soluble, monotopic and lipid-anchored proteins are addressed. How to set up trials manually and automatically with a robot is introduced with reference to open-access online videos that provide a practical guide to all aspects of the method. These range from protein reconstitution to crystal harvesting from the hosting mesophase, which is noted for its viscosity and stickiness. The sponge phase, as an alternative medium in which to perform crystallization, is described. The compatibility of the method with additive lipids, detergents, precipitant-screen components and materials carried along with the protein such as denaturants and reducing agents is considered. The powerful host and additive lipid-screening strategies are described along with how samples that have low protein concentration and cell-free expressed protein can be used. Assaying the protein reconstituted in the bilayer of the cubic phase for function is an important element of quality control and is detailed. Host lipid design for crystallization at low temperatures and for large proteins and complexes is outlined. Experimental phasing by heavy-atom derivatization, soaking or co-crystallization is routine and the approaches that have been implemented to date are described. An overview and a breakdown by family and function of the close to 200 published structures that have been obtained using in meso-grown crystals are given. Recommendations for conducting the screening process to give a more productive outcome are summarized. The fact that the in meso method also works with soluble proteins should not be overlooked. Recent applications of the method for in situ serial crystallography at X-ray free-electron lasers and synchrotrons are described. The review ends with a view to the future and to the bright prospects for the method, which continues to contribute to our understanding of the molecular mechanisms of some of nature’s most valued proteinaceous robots.
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Affiliation(s)
- Martin Caffrey
- Membrane Structural and Functional Biology Group, School of Medicine and School of Biochemistry and Immunology, Trinity College Dublin, Dublin, Ireland
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27
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Chong JY, Mulet X, Boyd BJ, Drummond CJ. Steric Stabilizers for Cubic Phase Lyotropic Liquid Crystal Nanodispersions (Cubosomes). ADVANCES IN PLANAR LIPID BILAYERS AND LIPOSOMES 2015. [DOI: 10.1016/bs.adplan.2014.11.001] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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Khvostichenko DS, Ng JJD, Perry SL, Menon M, Kenis PJA. Effects of detergent β-octylglucoside and phosphate salt solutions on phase behavior of monoolein mesophases. Biophys J 2014; 105:1848-59. [PMID: 24138861 DOI: 10.1016/j.bpj.2013.09.009] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2013] [Revised: 08/16/2013] [Accepted: 09/06/2013] [Indexed: 10/26/2022] Open
Abstract
Using small-angle x-ray scattering (SAXS), we investigated the phase behavior of mesophases of monoolein (MO) mixed with additives commonly used for the crystallization of membrane proteins from lipidic mesophases. In particular, we examined the effect of sodium and potassium phosphate salts and the detergent β-octylglucoside (βOG) over a wide range of compositions relevant for the crystallization of membrane proteins in lipidic mesophases. We studied two types of systems: 1), ternary mixtures of MO with salt solutions above the hydration boundary; and 2), quaternary mixtures of MO with βOG and salt solutions over a wide range of hydration conditions. All quaternary mixtures showed highly regular lyotropic phase behavior with the same sequence of phases (Lα, Ia3d, and Pn3m) as MO/water mixtures at similar temperatures. The effects of additives in quaternary systems agreed qualitatively with those found in ternary mixtures in which only one additive is present. However, quantitative differences in the effects of additives on the lattice parameters of fully hydrated mesophases were found between ternary and quaternary mixtures. We discuss the implications of these findings for mechanistic investigations of membrane protein crystallization in lipidic mesophases and for studies of the suitability of precipitants for mesophase-based crystallization methods.
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Affiliation(s)
- Daria S Khvostichenko
- Department of Chemical and Biomolecular Engineering, University of Illinois at Urbana-Champaign, Urbana, Illinois
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Goñi FM. The basic structure and dynamics of cell membranes: an update of the Singer-Nicolson model. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2014; 1838:1467-76. [PMID: 24440423 DOI: 10.1016/j.bbamem.2014.01.006] [Citation(s) in RCA: 210] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/06/2013] [Revised: 12/30/2013] [Accepted: 01/08/2014] [Indexed: 01/03/2023]
Abstract
The fluid mosaic model of Singer and Nicolson (1972) is a commonly used representation of the cell membrane structure and dynamics. However a number of features, the result of four decades of research, must be incorporated to obtain a valid, contemporary version of the model. Among the novel aspects to be considered are: (i) the high density of proteins in the bilayer, that makes the bilayer a molecularly "crowded" space, with important physiological consequences; (ii) the proteins that bind the membranes on a temporary basis, thus establishing a continuum between the purely soluble proteins, never in contact with membranes, and those who cannot exist unless bilayer-bound; (iii) the progress in our knowledge of lipid phases, the putative presence of non-lamellar intermediates in membranes, and the role of membrane curvature and its relation to lipid geometry, (iv) the existence of lateral heterogeneity (domain formation) in cell membranes, including the transient microdomains known as rafts, and (v) the possibility of transient and localized transbilayer (flip-flop) lipid motion. This article is part of a Special Issue entitled: Membrane Structure and Function: Relevance in the Cell's Physiology, Pathology and Therapy.
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Affiliation(s)
- Félix M Goñi
- Unidad de Biofísica (CSIC, UPV/EHU), Universidad del País Vasco, P.O. Box 644, 48080 Bilbao, Spain; Departamento de Bioquímica, Universidad del País Vasco, P.O. Box 644, 48080 Bilbao, Spain.
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Recent Developments in the Production, Analysis, and Applications of Cubic Phases Formed by Lipids. ACTA ACUST UNITED AC 2013. [DOI: 10.1016/b978-0-12-411515-6.00006-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register]
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Takahashi H, Jojiki K. Effect of Heavy Water on Nonlamellar Structures of Phospholipid and Monoolein Molecular Assemblies. CHEM LETT 2012. [DOI: 10.1246/cl.2012.1101] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Hiroshi Takahashi
- Biophysics Laboratory, Department of Chemistry and Chemical Biology, Gunma University
| | - Kohtaro Jojiki
- Biophysics Laboratory, Department of Chemistry and Chemical Biology, Gunma University
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Nanostructured self assembled lipid materials for drug delivery and tissue engineering. Ther Deliv 2012; 2:1485-516. [PMID: 22826876 DOI: 10.4155/tde.11.105] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Every living organism comprises of lipids as basic building blocks in addition to other components. Utilizing these lipids for pharmaceutical and biomedical applications can overcome biocompatibility and biodegradability issues. A well known example is liposomes (lipids arranged in lamellar structures), but other than that there are additional unique mesophasic structures of lipids formed as a result of lipid polymorphisms, which include cubic-, hexagonal- or sponge-phase structures. These structures provide the advantages of stability and production feasibility compared with liposomes. Cubosomes, which exist in a cubic structure, have improved stability, bioadhesivity and biocompatibility. Hexagonal phases or hexosomes exhibit hexagonal arrangements and can encapsulate different drugs with high stability. Lipids also forms tube-like structures known as tubules and ribbons that are also utilized in different biomedical applications, especially in tissue engineering. Immune stimulating complexes are nanocage-like structures formed as a result of interactions of lipid, antigen and Quillaja saponin. These lipidic mesophasic structures have been utilized for gene, vaccine and drug delivery. This article addresses lipid self-assembled supramolecular nanostructures, including cubosomes, hexosomes, tubules, ribbons, cochleates, lipoplexes and immune stimulating complexes and their biomedical applications.
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Tenchov B, Koynova R. Cubic phases in membrane lipids. EUROPEAN BIOPHYSICS JOURNAL: EBJ 2012; 41:841-50. [DOI: 10.1007/s00249-012-0819-3] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/26/2012] [Accepted: 04/21/2012] [Indexed: 11/29/2022]
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Kulkarni CV. Nanostructural studies on monoelaidin-water systems at low temperatures. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2011; 27:11790-11800. [PMID: 21846133 DOI: 10.1021/la201235h] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
In recent years, lipid based nanostructures have increasingly been used as model membranes to study various complex biological processes. For better understanding of such phenomena, it is essential to gain as much information as possible for model lipid structures under physiological conditions. In this paper, we focus on one of such lipids--monoelaidin (ME)--for its polymorphic nanostructures under varying conditions of temperature and water content. In the recent contribution (Soft Matter, 2010, 6, 3191), we have reported the phase diagram of ME above 30 °C and compared with the phase behavior of other lipids including monoolein (MO), monovaccenin (MV), and monolinolein (ML). Remarkable phase behavior of ME, stabilizing three bicontinuous cubic phases, motivates its study at low temperatures. Current studies concentrate on the low-temperature (<30 °C) behavior of ME and subsequent reconstruction of its phase diagram over the entire temperature-water composition space (temperature, 0-76 °C; and water content, 0-70%). The polymorphs found for the monoelaidin-water system include three bicontinuous cubic phases, i.e., Ia3d, Pn3m, and Im3m, and lamellar phases which exhibit two crystalline (L(c1) and L(c0)), two gel (L(β) and L(β*)), and a fluid lamellar (L(α)) states. The fluid isotropic phase (L(2)) was observed only for lower hydrations (<20%), whereas hexagonal phase (H(2)) was not found under studied conditions. Nanostructural parameters of these phases as a function of temperature and water content are presented together with some molecular level calculations. This study might be crucial for perception of the lyotropic phase behavior as well as for designing nanostructural assemblies for potential applications.
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Affiliation(s)
- Chandrashekhar V Kulkarni
- Department of Chemistry, Imperial College London, Exhibition Road, London - SW7 2AZ, United Kingdom.
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Bitan-Cherbakovsky L, Libster D, Aserin A, Garti N. Complex dendrimer-lyotropic liquid crystalline systems: structural behavior and interactions. J Phys Chem B 2011; 115:11984-92. [PMID: 21902258 DOI: 10.1021/jp2030939] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
The incorporation of dendrimer into three lyotropic liquid crystalline (LLCs) mesophases is demonstrated for the first time. A second generation (G2) of poly(propylene imine) dendrimer (PPI) was solubilized into lamellar, diamond reverse cubic, and reverse hexagonal LLCs composed of glycerol monooleate (GMO), and water (and D-α-tocopherol in the H(II) system). The combination of PPI with LLCs may provide an advantageous drug delivery system. Cross-polarized light microscope, small-angle X-ray scattering (SAXS), and attenuated total reflectance Fourier transform infrared (ATR-FTIR) were utilized to study the structural behavior of the mesophases, the localization of PPI within the system, and the interactions between the guest molecule and the system's components. It was revealed that PPI-G2 functioned as a "water pump", competing with the lipid headgroups for water binding. As a result, L(α)→H(II) and Q(224)→H(II) structural shifts were detected (at 10 wt % PPI-G2 content), probably caused by the dehydration of monoolein headgroups and subsequent increase of the lipid's critical packing parameter (CPP). In the case of H(II), as a result of the balance between the dehydration of the monoolein headgroups and the significant presence of PPI within the interfacial region, increasing the quantity of hydrogen bonds, no structural transitions occurred. ATR-FTIR analysis demonstrated a downward shift of the H-O-H (water), as a result of PPI-G2 embedment, suggesting an increase in the mean water-water H-bond angle resulting from binding PPI-G2 to the water network. Additionally, the GMO hydroxyl groups at β- and γ-C-OH positions revealed a partial interaction of hydrogen bonds with N-H functional groups of the protonated PPI-G2. Other GMO interfacial functional groups were shown to interact with the PPI-G2, in parallel with the GMO dehydration phenomenon. In the future, these outcomes can be used to design advanced drug delivery systems, allowing administration of dendrimers as a therapeutic agent from LLCs.
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Affiliation(s)
- Liron Bitan-Cherbakovsky
- Casali Institute of Applied Chemistry, The Hebrew University of Jerusalem, Edmond J. Safra Campus, Givat Ram, Jerusalem 91904, Israel
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Amar-Zrihen N, Aserin A, Garti N. Food volatile compounds facilitating HII mesophase formation: solubilization and stability. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2011; 59:5554-5564. [PMID: 21495722 DOI: 10.1021/jf200466e] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Four lipophilic food volatile molecules of different chemical characteristics, phenylacetaldehyde, 2,6-dimethyl-5-heptenal, linalool, and trans-4-decenal, were solubilized into binary mixtures of monoolein/water, facilitating the formation of reverse hexagonal (H(II)) mesophases at room temperature without the need of solvents or triglycerides. Some of the flavor compounds are important building blocks of the hexagonal mesostructure, preventing phase transition with aging. The solubilization loads were relatively high: 12.6, 10.0, 12.6, and 10.0 wt % for phenylacetaldehyde, 2,6-dimethyl-5-heptenal, linalool, and trans-4-decenal, respectively. Phenylacetaldehyde formed mixtures of lamellar and cubic phases. Linalool, 2,6-dimethyl-5-heptenal, and trans-4-decenal induced structural shift from lamellar directly to H(II) mesophase, remaining stable at room temperature. Lattice parameters were found to increase with water content and to decrease with temperature and/or food volatile content. trans-4-Decenal produces more stable H(II) mesophase compared to linalool-loaded mesophase. At 40-60 °C, depending on the chemical structure and on the solubilization location of the food volatile compounds, the H(II) mesophase transforms to isotropic micellar phase, facilitating the release of the food volatile compounds. Molecular interactions suggest the existence of two consecutive stages in the solubilization process.
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Affiliation(s)
- Natali Amar-Zrihen
- The Ratner Chair of Chemistry, Casali Institute of Applied Chemistry, The Hebrew University of Jerusalem, Jerusalem, Israel
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Kulkarni CV, Wachter W, Iglesias-Salto G, Engelskirchen S, Ahualli S. Monoolein: a magic lipid? Phys Chem Chem Phys 2011; 13:3004-21. [DOI: 10.1039/c0cp01539c] [Citation(s) in RCA: 295] [Impact Index Per Article: 22.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Nguyen TH, Hanley T, Porter CJ, Larson I, Boyd BJ. Phytantriol and glyceryl monooleate cubic liquid crystalline phases as sustained-release oral drug delivery systems for poorly water soluble drugs I. Phase behaviour in physiologically-relevant media. J Pharm Pharmacol 2010. [DOI: 10.1211/jpp.62.07.0005] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
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Kwon TK, Kim JC. Preparation and In Vitro Skin Permeation of Cubosomes Containing Hinokitiol. J DISPER SCI TECHNOL 2010. [DOI: 10.1080/01932690903224862] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Kwon TK, Kim JC. Monoolein cubic phase containing acidic proteinoid: pH-dependent release. Drug Dev Ind Pharm 2010; 37:56-61. [DOI: 10.3109/03639045.2010.491830] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Kwon TK, Lee HY, Kim JD, Shin WC, Park SK, Kim JC. In vitro skin permeation of cubosomes containing water soluble extracts of Korean barberry. COLLOID JOURNAL 2010. [DOI: 10.1134/s1061933x10020092] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Bitan-Cherbakovsky L, Yuli-Amar I, Aserin A, Garti N. Solubilization of vitamin E into H(II) LLC mesophase in the presence and in the absence of vitamin C. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2010; 26:3648-3653. [PMID: 20175578 DOI: 10.1021/la903100m] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
The synergistic solubilization of two major hydrophilic (vitamin C, ascorbic acid, AA) and lipophilic (vitamin E, D-alpha-tocopherol, VE) antioxidants within reverse hexagonal (H(II)) mesophases is reported. The H(II) mesophases are composed of monoolein (GMO)/VE/AA/water. A wide range of VE concentration was examined (on the expense of GMO concentrations) while the AA and water concentrations remained constant (4 and 12.5 wt %, respectively) in order to expand the H(II) mesophase. SAXS and DSC combined with ATR-FTIR techniques were utilized to study the interactions between each solubilizate and the H(II) component that enabled the synergistic accommodation of the hydrophilic and hydrophobic molecules. It was revealed that up to 27 wt % VE solubilized within the H(II) mesophase. This hydrophobic additive localized at the lipophilic GMO tail region solvating the surfactant tails, thereby enabling the formation of the H(II) structure. As a result, the lattice parameter and the melting point of the hydrophobic tails decreased. Above 27 wt % VE (up to 33 wt %), once the GMO lipophilic region was homogenously solvated, additional VE molecules located closer to the interface. At this range of concentrations, new hydrogen bonds between O-H groups of VE and O-H groups of GMO were formed. Once 35 wt % VE was introduced, the H(II) structure transformed to face-centered reverse micellar cubic phase (Fd3m, Q(227)).
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Affiliation(s)
- Liron Bitan-Cherbakovsky
- Casali Institute of Applied Chemistry, The Institute of Chemistry, The Hebrew University of Jerusalem, Jerusalem 91904, Israel
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In Cubo Crystallization of Membrane Proteins. ACTA ACUST UNITED AC 2010. [DOI: 10.1016/b978-0-12-381266-7.00009-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/08/2023]
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Winter R, Czeslik C. Pressure effects on the structure of lyotropic lipid mesophases and model biomembrane systems. ACTA ACUST UNITED AC 2009. [DOI: 10.1524/zkri.2000.215.8.454] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
Lipid systems, which provide valuable model systems for biological membranes, display a variety of polymorphic phases, depending on their molecular structure and environmental conditions. By use of X-ray and neutron diffraction the temperature- and pressure-dependent structure and phase behavior of lipid systems, differing in chain configuration and headgroup structure, have been studied. Besides lamellar phases also nonlamellar phases have been investigated. Hydrostatic pressure has been used as a physical parameter for studying the stability and energetics of lyotropic lipid mesophases, but also because high pressure is an important feature of certain natural membrane environments (e.g., marine biotopes) and because the high pressure phase behavior of biomolecules is of biotechnological interest (e.g., high pressure food processing). We demonstrate that temperature and pressure have noncongruent effects on the structural and phase behavior. By using the pressure-jump relaxation technique in combination with time-resolved synchrotron X-ray diffraction, the kinetics of different lipid phase transformations was also investigated. The time constants for completion of the transitions depend on the direction of the transition, the symmetry and topology of the structures involved, and also on the pressure-jump amplitude. In addition, the effect of incorporating ions, steroids and polypeptides into bilayers on the temperature- and pressure-dependent phase behavior of the lipid systems is discussed.
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Abstract
The principal route to determine the structure and the function and interactions of membrane proteins is via macromolecular crystallography. For macromolecular crystallography to be successful, structure-quality crystals of the target protein must be forthcoming, and crystallogenesis represents a major challenge. Several techniques are employed to crystallize membrane proteins, and the bulk of these techniques make direct use of solubilized protein-surfactant complexes by the more traditional, so-called in surfo methods. An alternative in meso approach, which employs a bicontinuous lipidic mesophase, has emerged as a method with considerable promise in part because it involves reconstitution of the solubilized protein back into a stabilizing and organizing lipid bilayer reservoir as a prelude to crystallogenesis. A hypothesis for how the method works at the molecular level and experimental evidence in support of the proposal are reviewed here. The latest advances, successes, and challenges associated with the method are described.
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Abstract
A detailed protocol for crystallizing membrane proteins that makes use of lipidic mesophases is described. This has variously been referred to as the lipid cubic phase or in meso method. The method has been shown to be quite general in that it has been used to solve X-ray crystallographic structures of prokaryotic and eukaryotic proteins, proteins that are monomeric, homo- and hetero-multimeric, chromophore-containing and chromophore-free, and alpha-helical and beta-barrel proteins. Its most recent successes are the human-engineered beta(2)-adrenergic and adenosine A(2A) G protein-coupled receptors. Protocols are provided for preparing and characterizing the lipidic mesophase, for reconstituting the protein into the monoolein-based mesophase, for functional assay of the protein in the mesophase and for setting up crystallizations in manual mode. Methods for harvesting microcrystals are also described. The time required to prepare the protein-loaded mesophase and to set up a crystallization plate manually is about 1 h.
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Affiliation(s)
- Martin Caffrey
- Membrane Structural and Functional Biology Group, University of Limerick, Limerick, Ireland.
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Fraser S, Separovic F, Polyzos A. Cubic phases of ternary amphiphile–water systems. EUROPEAN BIOPHYSICS JOURNAL: EBJ 2009; 39:83-90. [DOI: 10.1007/s00249-009-0493-2] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/17/2009] [Revised: 05/14/2009] [Accepted: 05/18/2009] [Indexed: 10/20/2022]
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Amar-Yuli I, Libster D, Aserin A, Garti N. Solubilization of food bioactives within lyotropic liquid crystalline mesophases. Curr Opin Colloid Interface Sci 2009. [DOI: 10.1016/j.cocis.2008.02.001] [Citation(s) in RCA: 83] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Amar-Yuli I, Wachtel E, Shalev DE, Aserin A, Garti N. Low Viscosity Reversed Hexagonal Mesophases Induced by Hydrophilic Additives. J Phys Chem B 2008; 112:3971-82. [DOI: 10.1021/jp711421k] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Idit Amar-Yuli
- Casali Institute of Applied Chemistry, The Institute of Chemistry, The Hebrew University of Jerusalem, Jerusalem 91904, Israel, Faculty of Chemistry, The Weizmann Institute of Science, Rehovot 76100, Israel, and Wolfson Centre for Applied Structural Biology, The Hebrew University of Jerusalem, Jerusalem 91904, Israel
| | - Ellen Wachtel
- Casali Institute of Applied Chemistry, The Institute of Chemistry, The Hebrew University of Jerusalem, Jerusalem 91904, Israel, Faculty of Chemistry, The Weizmann Institute of Science, Rehovot 76100, Israel, and Wolfson Centre for Applied Structural Biology, The Hebrew University of Jerusalem, Jerusalem 91904, Israel
| | - Deborah E. Shalev
- Casali Institute of Applied Chemistry, The Institute of Chemistry, The Hebrew University of Jerusalem, Jerusalem 91904, Israel, Faculty of Chemistry, The Weizmann Institute of Science, Rehovot 76100, Israel, and Wolfson Centre for Applied Structural Biology, The Hebrew University of Jerusalem, Jerusalem 91904, Israel
| | - Abraham Aserin
- Casali Institute of Applied Chemistry, The Institute of Chemistry, The Hebrew University of Jerusalem, Jerusalem 91904, Israel, Faculty of Chemistry, The Weizmann Institute of Science, Rehovot 76100, Israel, and Wolfson Centre for Applied Structural Biology, The Hebrew University of Jerusalem, Jerusalem 91904, Israel
| | - Nissim Garti
- Casali Institute of Applied Chemistry, The Institute of Chemistry, The Hebrew University of Jerusalem, Jerusalem 91904, Israel, Faculty of Chemistry, The Weizmann Institute of Science, Rehovot 76100, Israel, and Wolfson Centre for Applied Structural Biology, The Hebrew University of Jerusalem, Jerusalem 91904, Israel
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