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Kameta N, Kikkawa Y, Norikane Y. Photo-responsive hole formation in the monolayer membrane wall of a supramolecular nanotube for quick recovery of encapsulated protein. NANOSCALE ADVANCES 2022; 4:1979-1987. [PMID: 36133410 PMCID: PMC9419338 DOI: 10.1039/d2na00035k] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/17/2022] [Accepted: 02/28/2022] [Indexed: 06/16/2023]
Abstract
Nanotubes with a single monolayer membrane wall comprised of a synthetic glycolipid and one of two synthetic azobenzene derivatives were assembled. X-ray diffraction, infrared, UV-visible, and circular dichroism spectroscopy clarified the embedding style of the azobenzene derivatives in the membrane wall, revealing that, depending on their different intermolecular hydrogen bond strengths, one azobenzene derivative was individually dispersed whereas the other formed a J-type aggregate. The non-aggregated derivative was insensitive to UV irradiation due to tight fixation by the surrounding glycolipid. In contrast, the aggregated derivative was sensitive to UV irradiation, which induced trans-to-cis isomerization of the derivative and disassembly of the J-type aggregate. Subsequent dissociation of the derivative into the bulk solution resulted in the formation of many nanometer-scale holes in the membrane wall. Although a model protein encapsulated within the nanotubes was slowly released over time from the two open ends of the nanotubes without UV irradiation, exposure to UV irradiation resulted in faster, preferential release of the protein through the holes in the membrane wall. The present findings are expected to facilitate the development not only of efficient means of recovering guest compounds stored within nanotubes but also the development of novel stimuli-responsive capsules in biological and medical fields.
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Affiliation(s)
- N Kameta
- Nanomaterials Research Institute, Department of Materials and Chemistry, National Institute of Advanced Industrial Science and Technology (AIST) Tsukuba Central 5, 1-1-1 Higashi Tsukuba Ibaraki 305-8565 Japan +81-29-861-4545 +81-29-861-4478
| | - Y Kikkawa
- Research Institute for Advanced Electronics and Photonics, Department of Electronics and Manufacturing, AIST Tsukuba Central 5, 1-1-1 Higashi Tsukuba Ibaraki 305-8565 Japan
| | - Y Norikane
- Research Institute for Advanced Electronics and Photonics, Department of Electronics and Manufacturing, AIST Tsukuba Central 5, 1-1-1 Higashi Tsukuba Ibaraki 305-8565 Japan
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Kameta N, Ding W. Supramolecular Nanotube Reactors for Production of Imine Polymers with Controlled Conformation, Size, and Chirality. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2019; 15:e1900682. [PMID: 30920781 DOI: 10.1002/smll.201900682] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/05/2019] [Revised: 03/05/2019] [Indexed: 06/09/2023]
Abstract
A series of supramolecular nanotubes with inner diameters of 1, 4, 9, 12, 16, and 29 nm are prepared from amino acid lipids. The hydrophobic channels of the nanotubes act as reactors for the formation of imine polymers by not only effectively encapsulating the benzaldehyde and diacetyleneamine precursors of the imine monomers but also markedly accelerating imine formation. The nanotube inner diameter determines whether the imine monomers self-assemble into nanoparticles, nanotapes, nanocoils, or twisted nanofibers in the channels. UV-induced polymerization of the diacetylene units in the imine nanostructures followed by decomposition of the nanotubes into molecular dispersions of the constituent amino acid lipids results in expulsion of the polymerized imine nanostructures with retained conformation. The isolated nanocoils and twisted nanofibers retain the helicity and circular dichroism induced by the nanotubes, which exhibits supramolecular chirality, even though the components of the imine monomers are achiral. These supramolecular nanotubes with tunable diameters and functionalizable surfaces can be expected to be useful for the production of polymers with controlled conformation, size, and chirality without the need for rational design or chemical modification of the monomers or optimization of the polymerization conditions.
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Affiliation(s)
- Naohiro Kameta
- Nanomaterials Research Institute, Department of Materials and Chemistry, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba Central 5, 1-1-1 Higashi, Tsukuba, Ibaraki, 305-8565, Japan
| | - Wuxiao Ding
- Nanomaterials Research Institute, Department of Materials and Chemistry, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba Central 5, 1-1-1 Higashi, Tsukuba, Ibaraki, 305-8565, Japan
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Dolgushin FM, Goloveshkin AS, Ananyev IV, Osintseva SV, Torubaev YV, Krylov SS, Golub AS. Interplay of noncovalent interactions in antiseptic quaternary ammonium surfactant Miramistin. ACTA CRYSTALLOGRAPHICA SECTION C-STRUCTURAL CHEMISTRY 2019; 75:402-411. [DOI: 10.1107/s2053229619002961] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/02/2019] [Accepted: 02/26/2019] [Indexed: 11/10/2022]
Abstract
The molecular and crystal structure of the widely used antiseptic benzyldimethyl{3-[(1-oxotetradecyl)amino]propyl}ammonium chloride monohydrate (Miramistin, MR), C26H47N2O+·Cl−·H2O, was determined by a single-crystal X-ray diffraction study and analyzed in the framework of the QTAIM (quantum theory of atoms in molecules) approach using both periodic and molecular DFT (density functional theory) calculations. The various noncovalent intermolecular interactions of different strengths were found to be realized in the hydrophilic parts of the crystal packing (i.e. O—H...Cl, N—H...Cl, C—H...Cl, C—H...O and C—H...π). The hydrophobic parts are built up exclusively by van der Waals H...H contacts. Quantification of the interaction energies using calculated electron-density distribution revealed that the total energy of the contacts within the hydrophilic and hydrophobic regions are comparable in value. The organic MR cation adopts the bent conformation with the head group tilted back to the long-chain alkyl tail in both the crystalline and the isolated state due to stabilization of this geometry by several intramolecular C—H...π, C—H...N and H...H interactions. This conformation preference is hypothesized to play an important role in the interaction of MR with biomembranes.
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Baccile N, Van Renterghem L, Le Griel P, Ducouret G, Brennich M, Cristiglio V, Roelants SLKW, Soetaert W. Bio-based glyco-bolaamphiphile forms a temperature-responsive hydrogel with tunable elastic properties. SOFT MATTER 2018; 14:7859-7872. [PMID: 30211424 DOI: 10.1039/c8sm01167b] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
A bio-based glycolipid bolaamphiphile (glyco-bolaamphiphile) has recently been produced (Van Renterghem et al., Biotechnol. Bioeng., 2018, 115, 1195-1206) on a gram scale by using the genetically-engineered S. bombicola strain Δat Δsble Δfao1. The glyco-bolaamphiphile bears two symmetrical sophorose headgroups at the extremities of a C16:0 (ω-1 hydroxylated palmitic alcohol) spacer. Its atypical structure has been obtained by redesigning the S. bombicola strain Δat Δsble, producing non-symmetrical glyco-bolaamphiphile, with an additional knock out (Δfao1) and feeding this new strain with fatty alcohols. The molecular structure of the glyco-bolaamphiphile is obtained by feeding the new strain a saturated C16 substrate (palmitic alcohol), which enables the biosynthesis of bolaform glycolipids. In this work, we show that the bio-based glyco-bolaamphiphile readily forms a hydrogel in water at room temperature, and that the hydrogel formation depends on the formation of self-assembled fibers. Above 28 °C, the molecules undergo a gel-to-sol transition, which is due to a fiber-to-micelle phase change. We provide a quantitative description of the Self-Assembled Fibrillar Network (SAFiN) hydrogel formed by the glyco-bolaampiphile. We identify the sol-gel transition temperature, the gelling time, and the minimal gel concentration; additionally, we explore the fibrillation mechanism as a function of time and temperature and determine the activation energy of the micelle-to-fiber phase transition. These parameters allow control of the elastic properties of the glyco-bolaamphiphile hydrogel: at 3 wt% and 25 °C, the elastic modulus G' is above the kPa range, while at 5 °C, G' can be tuned between 100 Pa and 20 kPa, by controlling the undercooling protocol.
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Affiliation(s)
- Niki Baccile
- Sorbonne Université, Centre National de la Recherche Scientifique, Laboratoire de Chimie de la Matière Condensée de Paris, LCMCP, F-75005 Paris, France.
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Shimizu T. Self-Assembly of Discrete Organic Nanotubes. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2018. [DOI: 10.1246/bcsj.20170424] [Citation(s) in RCA: 80] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Toshimi Shimizu
- AIST Fellow, National Institute of Advanced Industrial Science and Technology, Tsukuba Central 5, 1-1-1 Higashi, Tsukuba, Ibaraki 305-8565, Japan
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Dhasaiyan P, Prevost S, Baccile N, Prasad BLV. pH- and Time-Resolved in Situ SAXS Study of Self-Assembled Twisted Ribbons Formed by Elaidic Acid Sophorolipids. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:2121-2131. [PMID: 29257893 DOI: 10.1021/acs.langmuir.7b03164] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Conditions that favor the helical structure formation in structurally similar sophorolipids (SLs), that is, elaidic acid SLs (having a trans double bond between the C9 and C10 positions of the alkyl chain) and stearic acid SLs (no double bond), are presented here. The helical self-assembled structures formed by elaidic acid SLs were independent of pH and also were mediated by a micellar intermediate. On the other hand, the stearic acid SLs formed helical structures under low pH condition only. Astonishingly, the formation routes were found to be different, albeit the molecular geometry of both SLs is similar. Even if a conclusive mechanistic understanding must await further work, our studies strongly point out that the noncovalent weak interactions in elaidic acid SLs are able to overcome the electrostatic repulsions of the sophorolipid carboxylate groups at basic pH and facilitating the formation of helical structures. On the other hand, the hydrophobic interactions in stearic acid SLs endow the helical structures with extra stability, making them less vulnerable to dissolution upon heating.
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Affiliation(s)
- Prabhu Dhasaiyan
- Physical and Materials Chemistry Division, CSIR - National Chemical Laboratory , Pune - 411008, India
| | - Sylvain Prevost
- ESRF - The European Synchrotron , High Brilliance Beamline ID02, 38043 Grenoble, France
| | - Niki Baccile
- Sorbonne Université, Centre National de la Recherche Scientifique, Laboratoire de Chimie de la Matière Condensée de Paris , LCMCP, F-75005 Paris, France
| | - Bhagavatula L V Prasad
- Physical and Materials Chemistry Division, CSIR - National Chemical Laboratory , Pune - 411008, India
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Kameta N, Manaka Y, Akiyama H, Shimizu T. Bioreactors Based on Enzymes Encapsulated in Photoresponsive Transformable Nanotubes and Nanocoils End-Capped with Magnetic Nanoparticles. ACTA ACUST UNITED AC 2018. [DOI: 10.1002/adbi.201700214] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Naohiro Kameta
- Nanomaterials Research Institute; Department of Materials and Chemistry; National Institute of Advanced Industrial Science and Technology (AIST); Tsukuba Central 5, 1-1-1 Higashi Tsukuba Ibaraki 305-8565 Japan
| | - Yuichi Manaka
- Renewable Energy Research Center; Department of Energy and Environment; AIST; Koriyama Fukushima 963-0298 Japan
| | - Haruhisa Akiyama
- Research Institute for Sustainable Chemistry; Department of Materials and Chemistry; AIST; Tsukuba Central 5, 1-1-1 Higashi Tsukuba Ibaraki 305-8565 Japan
| | - Toshimi Shimizu
- AIST-Fellow; AIST; Tsukuba Central 5, 1-1-1 Higashi Tsukuba Ibaraki 305-8565 Japan
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Shimizu T, Kameta N, Ding W, Masuda M. Supramolecular Self-Assembly into Biofunctional Soft Nanotubes: From Bilayers to Monolayers. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2016; 32:12242-12264. [PMID: 27248715 DOI: 10.1021/acs.langmuir.6b01632] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
The inner and outer surfaces of bilayer-based lipid nanotubes can be hardly modified selectively by a favorite functional group. Monolayer-based nanotubes display a definitive difference in their inner and outer functionalities if bipolar wedge-shaped amphiphiles, so-called bolaamphiphiles, as a constituent of the monolayer membrane pack in a parallel fashion with a head-to-tail interface. To exclusively form unsymmetrical monolayer lipid membranes, we focus herein on the rational molecular design of bolaamphiphiles and a variety of self-assembly processes into tubular architectures. We first describe the importance of polymorph and polytype control and then discuss diverse methodologies utilizing a polymer template, multiple hydrogen bonds, binary and ternary coassembly, and two-step self-assembly. Novel biologically important functions of the obtained soft nanotubes, brought about only by completely unsymmetrical inner and outer surfaces, are discussed in terms of protein refolding, drug nanocarriers, lectin detection, a chiral inducer for achiral polymers, the tailored fabrication of polydopamine, and spontaneous nematic alignment.
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Affiliation(s)
- Toshimi Shimizu
- AIST Fellow, National Institute of Advanced Industrial Science and Technology (AIST) , Tsukuba Central 5, 1-1-1 Higashi, Tsukuba, Ibaraki 305-8565, Japan
| | - Naohiro Kameta
- Research Institute for Sustainable Chemistry, Department of Materials and Chemistry, AIST , Tsukuba Central 5, 1-1-1 Higashi, Tsukuba, Ibaraki 305-8565, Japan
| | - Wuxiao Ding
- Research Institute for Sustainable Chemistry, Department of Materials and Chemistry, AIST , Tsukuba Central 5, 1-1-1 Higashi, Tsukuba, Ibaraki 305-8565, Japan
| | - Mitsutoshi Masuda
- Research Institute for Sustainable Chemistry, Department of Materials and Chemistry, AIST , Tsukuba Central 5, 1-1-1 Higashi, Tsukuba, Ibaraki 305-8565, Japan
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Baccile N, Cuvier AS, Prévost S, Stevens CV, Delbeke E, Berton J, Soetaert W, Van Bogaert INA, Roelants S. Self-Assembly Mechanism of pH-Responsive Glycolipids: Micelles, Fibers, Vesicles, and Bilayers. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2016; 32:10881-10894. [PMID: 27730816 DOI: 10.1021/acs.langmuir.6b02337] [Citation(s) in RCA: 53] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
A set of four structurally related glycolipids are described: two of them have one glucose unit connected to either stearic or oleic acid, and two other ones have a diglucose headgroup (sophorose) similarly connected to either stearic or oleic acid. The self-assembly properties of these compounds, poorly known, are important to know due to their use in various fields of application from cleaning to cosmetics to medical. At basic pH, they all form mainly small micellar aggregates. At acidic pH, the oleic and stearic derivatives of the monoglucose form, respectively, vesicles and bilayer, while the same derivatives of the sophorose headgroup form micelles and twisted ribbons. We use pH-resolved in situ small angle X-ray scattering (SAXS) under synchrotron radiation to characterize the pH-dependent mechanism of evolution from micelles to the more complex aggregates at acidic pH. By pointing out the importance of the COO-/COOH ratio, the melting temperature, Tm, of the lipid moieties, hydration of the glycosidic headgroup, the packing parameter, membrane rigidity, and edge stabilization, we are now able to draw a precise picture of the full self-assembly mechanism. This work is a didactical illustration of the complexity of the self-assembly process of a stimuli-responsive amphiphile during which many concomitant parameters play a key role at different stages of the process.
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Affiliation(s)
- Niki Baccile
- Sorbonne Universités, UPMC Univ Paris 06, CNRS, Collège de France UMR 7574, Chimie de la Matière Condensée de Paris, UMR 7574, F-75005 Paris, France
| | - Anne-Sophie Cuvier
- Sorbonne Universités, UPMC Univ Paris 06, CNRS, Collège de France UMR 7574, Chimie de la Matière Condensée de Paris, UMR 7574, F-75005 Paris, France
| | - Sylvain Prévost
- ESRF - The European Synchrotron , High Brilliance Beamline ID02, 38043 Grenoble, France
| | - Christian V Stevens
- SynBioC, Department of Sustainable Organic Chemistry and Technology, Ghent University , Ghent, Belgium
| | - Elisabeth Delbeke
- SynBioC, Department of Sustainable Organic Chemistry and Technology, Ghent University , Ghent, Belgium
| | - Jan Berton
- SynBioC, Department of Sustainable Organic Chemistry and Technology, Ghent University , Ghent, Belgium
| | - Wim Soetaert
- InBio, Department of Biochemical and Microbial Technology, Faculty of Bioscience Engineering, Ghent University , Coupure Links 653, 9000 Ghent, Belgium
| | - Inge N A Van Bogaert
- InBio, Department of Biochemical and Microbial Technology, Faculty of Bioscience Engineering, Ghent University , Coupure Links 653, 9000 Ghent, Belgium
| | - Sophie Roelants
- InBio, Department of Biochemical and Microbial Technology, Faculty of Bioscience Engineering, Ghent University , Coupure Links 653, 9000 Ghent, Belgium
- Bio Base Europe Pilot Plant , Rodenhuizekaai 1, 9042 Ghent, Belgium
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Baccile N, Selmane M, Le Griel P, Prévost S, Perez J, Stevens CV, Delbeke E, Zibek S, Guenther M, Soetaert W, Van Bogaert INA, Roelants S. pH-Driven Self-Assembly of Acidic Microbial Glycolipids. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2016; 32:6343-6359. [PMID: 27307097 DOI: 10.1021/acs.langmuir.6b00488] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Microbial glycolipids are a class of well-known compounds, but their self-assembly behavior is still not well understood. While the free carboxylic acid end group makes some of them interesting stimuli-responsive compounds, the sugar hydrophilic group and the nature of the fatty acid chain make the understanding of their self-assembly behavior in water not easy and highly unpredictable. Using cryo-transmission electron microscopy (cryo-TEM) and both pH-dependent in situ and ex situ small angle X-ray scattering (SAXS), we demonstrate that the aqueous self-assembly at room temperature (RT) of a family of β-d-glucose microbial glycolipids bearing a saturated and monounsaturated C18 fatty acid chain cannot be explained on the simple basis of the well-known packing parameter. Using the "pH-jump" process, we find that the molecules bearing a monosaturated fatty acid forms vesicles below pH 6.2, as expected, but the derivative with a saturated fatty acid forms infinite bilayer sheets below pH 7.8, instead of vesicles. We show that this behavior can be explained on the different bilayer membrane elasticity as a function of temperature. Membranes are either flexible or stiff for experiments performed at a temperature respectively above or below the typical melting point, TM, of the lipidic part of each compound. Finally, we also show that the disaccharide-containing acidic cellobioselipid forms a majority of chiral fibers, instead of the expected micelles.
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Affiliation(s)
- Niki Baccile
- Sorbonne Universités, UPMC Universitè Paris 06, CNRS, Collège de France UMR 7574, Chimie de la Matière Condensée de Paris, UMR 7574, F-75005 Paris, France
| | - Mohamed Selmane
- Sorbonne Universités, UPMC Universitè Paris 06, CNRS, Collège de France UMR 7574, Chimie de la Matière Condensée de Paris, UMR 7574, F-75005 Paris, France
| | - Patrick Le Griel
- Sorbonne Universités, UPMC Universitè Paris 06, CNRS, Collège de France UMR 7574, Chimie de la Matière Condensée de Paris, UMR 7574, F-75005 Paris, France
| | - Sylvain Prévost
- ESRF-The European Synchrotron, High Brilliance Beamline ID02, 38043 Grenoble, France
| | - Javier Perez
- SWING, Synchrotron Soleil, BP 48, 91192 Gif-sur-Yvette, France
| | - Christian V Stevens
- SynBioC, Department of Sustainable Organic Chemistry and Technology, Ghent University , 9000 Ghent, Belgium
| | - Elisabeth Delbeke
- SynBioC, Department of Sustainable Organic Chemistry and Technology, Ghent University , 9000 Ghent, Belgium
| | - Susanne Zibek
- Fraunhofer Institute for Interfacial Engineering and Biotechnology IGB, 70569 Stuttgart, Germany
| | - Michael Guenther
- Fraunhofer Institute for Interfacial Engineering and Biotechnology IGB, 70569 Stuttgart, Germany
| | - Wim Soetaert
- InBio, Department of Biochemical and Microbial Technology, Faculty of Bioscience Engineering, Ghent University , Coupure Links 653, 9000, Ghent, Belgium
| | - Inge N A Van Bogaert
- InBio, Department of Biochemical and Microbial Technology, Faculty of Bioscience Engineering, Ghent University , Coupure Links 653, 9000, Ghent, Belgium
| | - Sophie Roelants
- InBio, Department of Biochemical and Microbial Technology, Faculty of Bioscience Engineering, Ghent University , Coupure Links 653, 9000, Ghent, Belgium
- Bio Base Europe Pilot Plant, Rodenhuizekaai 1, 9042 Ghent, Belgium
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Tyagi M, Kartha KPR. Synthesis of glycotriazololipids and observations on their self-assembly properties. Carbohydr Res 2015; 413:85-92. [PMID: 26114887 DOI: 10.1016/j.carres.2015.04.008] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2015] [Revised: 03/30/2015] [Accepted: 04/08/2015] [Indexed: 11/28/2022]
Abstract
Various carbohydrate-anchored triazole-linked lipids prepared by solvent-free mechanochemical azide-alkyne click reaction, on analysis by TEM, have been found to spontaneously self-assemble in solvents leading to structures of interesting physicochemical attributes. Interestingly, analogous compounds based on different sugars (e.g., d-glucose, and d-galactose, as also d-lactose) assemble in patterns distinctly different from each other thus reiterating the fact that the structure of the sugar as well as that of the lipid are important factors that determine the size and shape of the supramolecular assembly formed. Besides, the molecular self-assembly was also found to be solvent-as well as temperature-dependent.
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Affiliation(s)
- Mohit Tyagi
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research, Punjab, India
| | - K P Ravindranathan Kartha
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research, Punjab, India.
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Chen AJ, Hsu IJ, Wu WY, Su YT, Tsai FY, Mou CY. A fluorescent organic nanotube assembled from novel p-phenylene ethynylene-based dicationic amphiphiles. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2013; 29:2580-2587. [PMID: 23360494 DOI: 10.1021/la3050829] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Novel π-extended conjugated amphiphiles composed of a hydrophilic section of two quaternary ammonium groups and p-phenylene ethynylene with adjustable alkyl chain hydrophobic section were prepared by a multistep synthesis. These dicationic amphiphiles showed good water solubility and formed a tubular assembly in water. The evidence for the nanotubular comes from direct optical and TEM observations. A strong π-π stacking interaction between neighboring molecules, as evidenced by the red-shift and self-quenching in fluorescence, is proposed for the self-assembly. At the same time, dehydration of the bromide led to strong counterion condensation in headgroups, which resulted in the small curvature structure of the nanotubes. A bilayer lamellar structural model for the organic nanotube is proposed, and a reasonable structural model based on the experimental XRD pattern, as well as cell constants, is proposed.
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Affiliation(s)
- Ai-Jan Chen
- Department of Chemistry, National Taiwan University, Taipei 106, Taiwan
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Popov M, Grinberg S, Linder C, Waner T, Levi-Hevroni B, Deckelbaum RJ, Heldman E. Site-directed decapsulation of bolaamphiphilic vesicles with enzymatic cleavable surface groups. J Control Release 2011; 160:306-14. [PMID: 22226780 DOI: 10.1016/j.jconrel.2011.12.022] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2011] [Revised: 12/16/2011] [Accepted: 12/17/2011] [Indexed: 12/20/2022]
Abstract
Stable nano-sized vesicles with a monolayer encapsulating membrane were prepared from novel bolaamphiphiles with choline ester head groups. The head groups were covalently bound to the alkyl chain of the bolaamphiphiles either via the nitrogen atom of the choline moiety, or via the choline ester's methyl group. Both types of bolaamphiphiles competed with acetylthiocholine for binding to acetylcholine esterase (AChE), yet, only the choline ester head groups bound to the alkyl chain via the nitrogen atom of the choline moiety were hydrolyzed by the enzyme. Likewise, only vesicles composed of bolaamphiphiles with head groups that were hydrolyzed by AChE released their encapsulated material upon exposure to the enzyme. Injection of carboxyfluorescein (CF)-loaded vesicles with cleavable choline ester head groups into mice resulted in the accumulation of CF in tissues that express high AChE activity, including the brain. By comparison, when vesicles with choline ester head groups that are not hydrolyzed by AChE were injected into mice, there was no accumulation of CF in tissues that highly express the enzyme. These results imply that bolaamphiphilic vesicles with surface groups that are substrates to enzymes which are highly expressed in target organs may potentially be used as a drug delivery system with controlled site-directed drug release.
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Affiliation(s)
- Mary Popov
- Department of Clinical Biochemistry, Ben-Gurion University of the Negev, Beer Sheva, Israel.
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Affiliation(s)
- Naohiro KAMETA
- Nanotube Research Center (NTRC), National Institute of Advanced Industrial Science and Technology (AIST)
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The influence of dipalmitoyl phosphatidylserine on phase behaviour of and cellular response to lyotropic liquid crystalline dispersions. Biomaterials 2010; 31:9473-81. [DOI: 10.1016/j.biomaterials.2010.08.030] [Citation(s) in RCA: 63] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2010] [Accepted: 08/16/2010] [Indexed: 11/20/2022]
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KAMETA N, MASUDA M, SHIMIZU T. Liquid-Phase Nanospace Science of Bionanotubes Consisting of Synthetic Lipid Membranes. KOBUNSHI RONBUNSHU 2010. [DOI: 10.1295/koron.67.560] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Shimizu T. Molecular Self-Assembly into One-Dimensional Nanotube Architectures and Exploitation of Their Functions. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2008. [DOI: 10.1246/bcsj.81.1554] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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Kameta N, Masuda M, Minamikawa H, Shimizu T. Self-assembly and thermal phase transition behavior of unsymmetrical bolaamphiphiles having glucose- and amino-hydrophilic headgroups. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2007; 23:4634-41. [PMID: 17355159 DOI: 10.1021/la063542o] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
The thermal phase transition and self-assembly behaviors in water of the crystalline lamellar films prepared from unsymmetrical bolaamphiphiles, N-(2-aminoethyl)-N'-(beta-d-glucopyranosyl)-alkanediamide [1(n), n = 12, 14, 16, 17, 18, and 20], have been studied using differential scanning calorimetry, polarized light microscopy, variable-temperature (VT) X-ray diffraction (XRD), and VT-IR spectroscopy. The behavior allowed us to classify the bolaamphiphiles into two categories: short chain 1(n) (n = 12, 14, 16, and 17) and long chain 1(n) (n = 18 and 20). On heating, the films of the long chain 1(n) exhibited polymorphism of two crystal phases (Cr1 and Cr2) and one thermotropic mesophase (smectic). These phases proved to consist of unsymmetrical monolayer lipid membranes (MLMs), in which the molecules packed in a parallel fashion. On the other hand, the films of the short chain 1(n) gave a single crystal phase (Cr1) consisting of symmetrical MLMs with antiparallel molecular packing. Scanning transmission electron microscopy and atomic force microscopy revealed that the long chain 1(n) self-assembles in alkaline aqueous solutions to form nanotubes with 110-120 nm outer diameters, while the short chain 1(n) produces nanotapes with 80-250 nm widths. XRD and IR measurements revealed that the nanotubes consist of unsymmetrical MLMs, while the nanotapes consist of symmetrical MLMs. The molecular packing of the initial solid phase was essentially maintained even in the self-assemblies in water. The self-assembly process in water allowed the symmetrical MLM films of the short chain 1(n) to convert into the symmetrical MLM nanotapes. Similarly, the unsymmetrical MLM films of the long chain 1(n) were converted into the unsymmetrical MLM nanotubes.
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Affiliation(s)
- Naohiro Kameta
- SORST, Japan Science and Technology Agency (JST), and Nanoarchitectonics Research Center (NARC), National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba Central 5, 1-1-1 Higashi, Tsukuba, Ibaraki 305-8565, Japan
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Shimizu T. Self-assembled lipid nanotube hosts: The dimension control for encapsulation of nanometer-scale guest substances. ACTA ACUST UNITED AC 2006. [DOI: 10.1002/pola.21619] [Citation(s) in RCA: 60] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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