1
|
Dimethyl sulfoxide fosters larger micelles of docusate sodium in the mixed solutions with water. J Mol Liq 2023. [DOI: 10.1016/j.molliq.2022.120960] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
|
2
|
Dib N, Silber JJ, Correa NM, Falcone RD. Amphiphilic Ionic Liquids Capable to Formulate Organized Systems in an Aqueous Solution, Designed by a Combination of Traditional Surfactants and Commercial Drugs. Pharm Res 2022; 39:2379-2390. [PMID: 35854078 DOI: 10.1007/s11095-022-03342-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2022] [Accepted: 07/11/2022] [Indexed: 10/17/2022]
Abstract
The present review describes the state of the art in the conversion of pharmaceutically active ingredients (API) in amphiphilic Ionic Liquids (ILs) as alternative drug delivery systems. In particular, we focus our attention on the compounds generated by ionic exchange and without original counterions which generate different systems in comparison with the simple mixtures. In water, these new amphiphiles show similar or even better properties as surfactants in comparison with their precursors. Cations such as 1-alkyl-3-methyl-imidazolium and anions such as dioctyl sulfosuccinate or sodium dodecyl sulfate appear as the amphiphilic components most studied. In conclusion, this work shows interesting information on several promissory compounds and they appear as an interesting challenge to extend the application of ILs in the medical field.
Collapse
Affiliation(s)
- Nahir Dib
- Departamento de Química, Universidad Nacional de Rio Cuarto, Agencia Postal 3, C.P. X5804BYA, Ruta Nacional 36, km 601, Rio Cuarto, Córdoba, Argentina
- Instituto de Desarrollo Agroindustrial y de la Salud (IDAS), Universidad Nacional de Río Cuarto, Agencia Postal 3, C.P. X5804BYA, Ruta Nacional 36, km 601, Río Cuarto, Córdoba, Argentina
| | - Juana J Silber
- Departamento de Química, Universidad Nacional de Rio Cuarto, Agencia Postal 3, C.P. X5804BYA, Ruta Nacional 36, km 601, Rio Cuarto, Córdoba, Argentina
- Instituto de Desarrollo Agroindustrial y de la Salud (IDAS), Universidad Nacional de Río Cuarto, Agencia Postal 3, C.P. X5804BYA, Ruta Nacional 36, km 601, Río Cuarto, Córdoba, Argentina
| | - N Mariano Correa
- Departamento de Química, Universidad Nacional de Rio Cuarto, Agencia Postal 3, C.P. X5804BYA, Ruta Nacional 36, km 601, Rio Cuarto, Córdoba, Argentina
- Instituto de Desarrollo Agroindustrial y de la Salud (IDAS), Universidad Nacional de Río Cuarto, Agencia Postal 3, C.P. X5804BYA, Ruta Nacional 36, km 601, Río Cuarto, Córdoba, Argentina
| | - R Dario Falcone
- Departamento de Química, Universidad Nacional de Rio Cuarto, Agencia Postal 3, C.P. X5804BYA, Ruta Nacional 36, km 601, Rio Cuarto, Córdoba, Argentina.
- Instituto de Desarrollo Agroindustrial y de la Salud (IDAS), Universidad Nacional de Río Cuarto, Agencia Postal 3, C.P. X5804BYA, Ruta Nacional 36, km 601, Río Cuarto, Córdoba, Argentina.
| |
Collapse
|
3
|
Li J, Chen SL, Hou Y, Yuan Q, Gan W. Revealing the mechanisms of vesicle formation with multiple spectral methods. Phys Chem Chem Phys 2022; 24:12465-12475. [PMID: 35575256 DOI: 10.1039/d2cp01183b] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
The investigation of the self-assembly of amphiphilic molecules and the formation of micelles/vesicles has attracted significant attention. However, in situ and real-time methods for such studies are rare. Here, a surface-sensitive second harmonic generation (SHG) technique was applied to study the formation of vesicles in solutions of an anti-cancer drug, doxorubicin (DOX), and a generally used surfactant (sodium bis (2-ethylhexyl) sulfosuccinate, AOT). With the aid of two-photon fluorescence (TPF), Rayleigh scattering and TEM, we revealed the structural evolution of the aggregated micelles/vesicles. It was found that AOT and DOX molecules rapidly aggregated and formed micelles in the solution. The residual DOX then acted as a "glue" that induced the aggregating/growing of the micelles and the transformation from aggregates to vesicles. The existence of lipid films, which was considered as the necessary intermediate state for vesicle formation, was excluded via the SHG observations, indicating that hollow shells may be directly transformed from solid aggregated micelles in the self-assembly formation of complex vesicles. The combined spectroscopic methods were also used to investigate the formation of vesicles from a commonly used lipid (i.e., 1,2-dioleoyl-sn-glycero-3-phospho-rac-(1-glycerol) sodium salt, DOPG) from its stacked bilayers. The swelling, curving and sealing of the DOPG bilayers for vesicle formation was monitored and clear dynamics were revealed. This work shows that the vesicle formation mechanism varies with the initial state of the surfactant/lipid molecules. It not only demonstrates the capability of the combined spectroscopic methods in investigating the aggregated systems but also provides new insight for understanding the formation of vesicles.
Collapse
Affiliation(s)
- Jianhui Li
- Shenzhen Key Laboratory of Flexible Printed Electronics Technology, also School of Science, Harbin Institute of Technology (Shenzhen), University Town, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Shenzhen 518055, Guangdong, Harbin 150001, Heilongjiang, China.
| | - Shun-Li Chen
- Department of Chemistry and Key Laboratory for Preparation and Application of Ordered Structure Materials of Guangdong Province, Shantou University, Shantou 515063, Guangdong, China
| | - Yi Hou
- Shenzhen Key Laboratory of Flexible Printed Electronics Technology, also School of Science, Harbin Institute of Technology (Shenzhen), University Town, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Shenzhen 518055, Guangdong, Harbin 150001, Heilongjiang, China.
| | - Qunhui Yuan
- Shenzhen Key Laboratory of Flexible Printed Electronics Technology, also School of Materials Science and Engineering, Harbin Institute of Technology (Shenzhen), University Town, Shenzhen 518055, Guangdong, China
| | - Wei Gan
- Shenzhen Key Laboratory of Flexible Printed Electronics Technology, also School of Science, Harbin Institute of Technology (Shenzhen), University Town, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Shenzhen 518055, Guangdong, Harbin 150001, Heilongjiang, China.
| |
Collapse
|
4
|
Bhat A, Harris MT, Jaeger VW. Structural Insights into Self-Assembled Aerosol-OT Aggregates in Aqueous Media Using Atomistic Molecular Dynamics. J Phys Chem B 2021; 125:13789-13803. [PMID: 34898216 DOI: 10.1021/acs.jpcb.1c07136] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
In water, the surfactant dioctyl sulfosuccinate (Aerosol-OT or AOT) exhibits diverse aggregate structures, ranging from micelles to lamella. An atomic-level understanding, however, of the formation and structure of these aggregates is lacking. Herein, using atomistic molecular dynamics (MD) with microsecond-long simulations, self-assembly of AOT in water is studied for concentrations of 1, 7.2, and 20 wt % at 293 K and for 7.2 wt % at 353 K. Assembly proceeds through stepwise association and dissociation of single AOT molecules, and the fusion and fission of AOT clusters. At 293 K, AOT self-assembles into either (i) spherical micelles (1 wt %), (ii) biphasic systems consisting of rod-like and prolate spheroidal micelles (7.2 wt %), or (iii) bilayers (20 wt %). We hypothesize that the observed rod-like structure is a precursor to lamellar microdomains found experimentally in biphasic dispersions. Increasing temperature to 353 K at 7.2 wt % results in a system consisting of prolate micelles but no rod-like micelles. Simulated phase behavior agrees with previously published experimental observations. Individual aggregates formed during self-assembly are identified using graph theory. Structural metrics of these aggregates like the radius of gyration, shape anisotropy, and prolateness are presented. Trends in structural metrics quantitatively reflect how shapes and sizes of AOT aggregates vary with surfactant concentration and temperature. These simulations provide deeper insight into open questions in the scientific community and demonstrate a method to generate physics-based micelle structures that can be used to rationalize experimental observations.
Collapse
Affiliation(s)
- Anuradha Bhat
- Division of Environmental and Ecological Engineering, Purdue University, Potter Engineering Center, 500 Central Drive, West Lafayette, Indiana 47907, United States
| | - Michael T Harris
- Davidson School of Chemical Engineering, Purdue University, Forney Hall of Chemical Engineering 1060, 480 Stadium Mall Drive, West Lafayette, Indiana 47907, United States
| | - Vance W Jaeger
- Department of Chemical Engineering, University of Louisville, Ernst Hall, Room 312, 216 Eastern Parkway, Louisville, Kentucky 40292, United States
| |
Collapse
|
5
|
Małycha K, Burakowski A, Gliński J, Niu H, Bai SL, Orzechowski K. Characterization of isooctane/AOT/water reverse micelles by dielectric spectroscopy, dynamic light scattering and acoustic methods. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.115335] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
|
6
|
Das A, Yadav N, Manchala S, Bungla M, Ganguli AK. Mechanistic Investigations of Growth of Anisotropic Nanostructures in Reverse Micelles. ACS OMEGA 2021; 6:1007-1029. [PMID: 33490761 PMCID: PMC7818115 DOI: 10.1021/acsomega.0c04033] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/20/2020] [Accepted: 12/21/2020] [Indexed: 06/12/2023]
Abstract
Tailoring the characteristics of anisotropic nanostructures like size, morphology, aspect ratio, and size dispersity is of extreme importance due to the unique and tunable properties including catalytic, optical, photocatalytic, magnetic, photochemical, electrochemical, photoelectrochemical, and several other physical properties. The reverse microemulsion (RM) method offers a useful soft-template and low-temperature procedure that, by variation of experimental conditions and nature of reagents, has proved to be extremely versatile in synthesis of nanostructures with tailored properties. Although many reports of synthesis of nanostructures by the RM method exist in the literature, most of the research studies carried out still follow the "hit and trial" method where the synthesis conditions, reagents, and other factors are varied and the resulting characteristics of the obtained nanostructures are justified on the basis of existing physical chemistry principles. Mechanistic investigations are scarce to generate a set of empirical rules that would aid in preplanning the RM-based synthesis of nanostructures with desired characteristics as well as make the process viable on an industrial scale. A consolidation of such research data available in the literature is essential for providing future directions in the field. In this perspective, we analyze the literature reports that have investigated the mechanistic aspects of growth of anisotropic nanostructures using the RM method and distil the essence of the present understanding at the nanoscale timescale using techniques like FCS and ultrafast spectroscopy in addition to routine techniques like DLS, fluorescence, TEM, etc.
Collapse
Affiliation(s)
- Anirban Das
- Department
of Chemistry, Biochemistry and Forensic Sciences, Amity School of
Applied Sciences, Amity University Haryana, Gurugram, Haryana 122413, India
| | - Nitin Yadav
- Department
of Chemistry, Indian Institute of Technology
Delhi, Hauz Khas, New Delhi, Delhi 110016, India
| | - Saikumar Manchala
- Department
of Chemistry, Indian Institute of Technology
Delhi, Hauz Khas, New Delhi, Delhi 110016, India
| | - Manisha Bungla
- Department
of Chemistry, Indian Institute of Technology
Delhi, Hauz Khas, New Delhi, Delhi 110016, India
| | - Ashok K. Ganguli
- Department
of Chemistry, Indian Institute of Technology
Delhi, Hauz Khas, New Delhi, Delhi 110016, India
| |
Collapse
|
7
|
Zhang Y, Wang Y, Yang X, Yang Q, Li J, Tan W. Polyaniline Nanovesicles for Photoacoustic Imaging-Guided Photothermal-Chemo Synergistic Therapy in the Second Near-Infrared Window. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2020; 16:e2001177. [PMID: 32762022 DOI: 10.1002/smll.202001177] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/24/2020] [Revised: 05/25/2020] [Indexed: 06/11/2023]
Abstract
Photoacoustic imaging-guided photothermal therapy in the second near-infrared (NIR-II) window shows promise for clinical deep-penetrating tumor phototheranostics. However, ideal photothermal agents in the NIR-II window are still rare. Here, the emeraldine salt of polyaniline (PANI-ES), especially synthesized by a one-pot enzymatic reaction on sodium bis(2-ethylhexyl) sulfosuccinate (AOT) vesicle surface (PANI-ES@AOT, λmax ≈ 1000 nm), exhibits excellent dispersion in physiological environment and remarkable photothermal ability at pH 6.5 (photothermal conversion efficiency of 43.9%). As a consequence of the enhanced permeability and retention effect of tumors and the doping-induced photothermal effect of PANI-ES@AOT, this pH-sensitive NIR-II photothermal agent allows tumor acidity phototheranostics with minimized pseudosignal readout and subdued normal tissue damage. Moreover, the enhanced fluidity of vesicle membrane triggered by heating is beneficial for drug release and allows precise synergistic therapy for an improved therapeutic effect. This study highlights the potential of template-oriented (or interface-confined) enzymatic polymerization reactions for the construction of conjugated polymers with desired biomedical applications.
Collapse
Affiliation(s)
- Ya Zhang
- Institute of Molecular Medicine (IMM), Renji Hospital, State Key Laboratory of Oncogenes and Related Genes, Shanghai Jiao Tong University School of Medicine College of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai, 200240, P. R. China
| | - Yingjie Wang
- MOE Key Laboratory for Analytical Science of Food Safety and Biology, Fujian Provincial Key Laboratory of Analysis and Detection Technology for Food Safety, State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou, 350108, P. R. China
| | - Xueqin Yang
- Institute of Molecular Medicine (IMM), Renji Hospital, State Key Laboratory of Oncogenes and Related Genes, Shanghai Jiao Tong University School of Medicine College of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai, 200240, P. R. China
| | - Qinglai Yang
- Institute of Molecular Medicine (IMM), Renji Hospital, State Key Laboratory of Oncogenes and Related Genes, Shanghai Jiao Tong University School of Medicine College of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai, 200240, P. R. China
| | - Juan Li
- Institute of Molecular Medicine (IMM), Renji Hospital, State Key Laboratory of Oncogenes and Related Genes, Shanghai Jiao Tong University School of Medicine College of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai, 200240, P. R. China
- MOE Key Laboratory for Analytical Science of Food Safety and Biology, Fujian Provincial Key Laboratory of Analysis and Detection Technology for Food Safety, State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou, 350108, P. R. China
| | - Weihong Tan
- Institute of Molecular Medicine (IMM), Renji Hospital, State Key Laboratory of Oncogenes and Related Genes, Shanghai Jiao Tong University School of Medicine College of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai, 200240, P. R. China
- Molecular Science and Biomedicine Laboratory (MBL), State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, College of Biology, Aptamer Engineering Center of Hunan Province, Hunan University, Changsha, Hunan, 410082, P. R. China
- Institute of Cancer and Basic Medicine (IBMC), Chinese Academy of Sciences, The Cancer Hospital of the University of Chinese, Academy of Sciences, Hangzhou, Zhejiang, 310022, P. R. China
| |
Collapse
|
8
|
|
9
|
Wang S, Chen C, Shiau BJ, Harwell JH. Counterion binding on coacervation of dioctyl sulfosuccinate in aqueous sodium chloride. SOFT MATTER 2019; 15:3771-3778. [PMID: 31016300 DOI: 10.1039/c8sm02531b] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
A simple coacervate-forming system consisting of sodium dioctyl sulfosuccinate (DOSS) in aqueous NaCl solution was investigated by turbidity measurement, electromotive force measurement (EMF), dynamic light scattering (DLS), and cryogenic transmission electron microscopy (cryo-TEM) to reveal the role of counterion binding in the microstructural changes behind the evolution of the coacervate phase. Coacervation phase boundaries of DOSS against different NaCl concentrations were obtained; the pseudo-coacervation constant, Ksp,co = [DOSS-][Na+], was determined to be 1.35 ± 0.15 × 10-4 M2 at 25 °C. Sodium ion activity from EMF measurements confirmed a drastic rise in counterion binding to DOSS aggregates near the coacervate phase boundary. For DOSS/NaCl solution concentrations near the coacervate phase boundary, the turbidity changed, starting from a clear, isotropic solution far from the phase boundary, transitioning to a turbid solution near the phase boundary, and exhibiting a distinct growth of the hydrodynamic diameter of DOSS aggregates as detected by DLS. Cryo-TEM evidenced the presence of vesicles at concentrations close to the coacervate phase boundary; both unilamellar and multilamellar vesicles were observed. Increased counterion binding on the aggregates led to fusion of the larger vesicles and eventually to formation of a coacervate phase; the DOSS aggregates in the clear supernatant phase were predominately small vesicles of approximately 100 nm diameter. This study suggests that the mechanism for coacervate formation in DOSS solutions is an increase in counterion binding coincident with formation of multilamellar vesicles near the phase boundary, followed by flocculation of the multilamellar vesicles beyond the phase boundary to form the coacervate phase.
Collapse
Affiliation(s)
- Shengbo Wang
- Mewbourne School of Petroleum and Geological Engineering, University of Oklahoma, Norman, Oklahoma 73019, USA.
| | | | | | | |
Collapse
|
10
|
Iwasaki F, Luginbühl S, Suga K, Walde P, Umakoshi H. Fluorescent Probe Study of AOT Vesicle Membranes and Their Alteration upon Addition of Aniline or the Aniline Dimer p-Aminodiphenylamine (PADPA). LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:1984-1994. [PMID: 28161960 DOI: 10.1021/acs.langmuir.6b04480] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Artificial vesicles formed from sodium bis(2-ethylhexyl) sulfosuccinate (AOT) in aqueous solution are used successfully as additives for enzymatic oligomerizations or polymerizations of aniline or the aniline dimer p-aminodiphenylamine (PADPA) under slightly acidic conditions (e.g., pH 4.3 with horseradish peroxidase and hydrogen peroxide as oxidants). In these systems, the reactions occur membrane surface-confined. Therefore, (i) the physicochemical properties of the vesicle membrane and (ii) the interaction of aniline or PADPA with the AOT membrane play crucial roles in the progress and final outcome of the reactions. For this reason, the properties of AOT vesicles with and without added aniline or PADPA were investigated by using two fluorescent membrane probes: 1,6-diphenyl-1,3,5-hexatriene (DPH) and 6-lauroyl-2-dimethylaminonaphthalene (Laurdan). DPH and Laurdan were used as "sensors" of the membrane fluidity, surface polarity, and membrane phase state. Moreover, the effect of hexanol, alone or in combination with aniline or PADPA, as a possible modifier of the AOT membrane, was also studied with the aim of evaluating whether the membrane fluidity and surface polarity is altered significantly by hexanol, which, in turn, may have an influence on the mentioned types of reactions. The data obtained indicate that the AOT vesicle membrane at room temperature and pH 4.3 (0.1 M NaH2PO4) is more fluid and has a more polar surface than in the case of fluid phospholipid vesicle membranes formed from 1,2-dioleoyl-sn-glycero-3-phosphocholine (DOPC). Furthermore, the fluorescence measurements indicate that mixed AOT-hexanol membranes are less fluid than pure AOT membranes and that they have a lower surface polarity than pure AOT membranes. PADPA strongly binds to AOT and to mixed AOT/hexanol membranes and leads to drastic changes in the membrane properties (decrease in fluidity and surface polarity), resulting in Laurdan fluorescence spectra, which are characteristic for intramembrane phase separations (coexistence of ordered and disordered domains). This means that highly fluid AOT membranes transform upon the addition of PADPA into membranes that have ordered domains. Although the relevance of this finding for the enzymatic oligomerization of PADPA is not yet clear, it is also of interest if one likes to use heterogeneous vesicle membranes as additives for carrying out membrane surface-confined reactions that do not necessarily involve PADPA as a reactant.
Collapse
Affiliation(s)
- Fumihiko Iwasaki
- Bio-Inspired Chemical Engineering Lab, Division of Chemical Engineering, Graduate School of Engineering Science, Osaka University , 1-3 Machikaneyamacho, Toyonaka, Osaka 560-8531, Japan
| | - Sandra Luginbühl
- Laboratory of Polymer Chemistry, Department of Materials, ETH Zürich , Vladimir-Prelog-Weg 5, 8093 Zürich, Switzerland
| | - Keishi Suga
- Bio-Inspired Chemical Engineering Lab, Division of Chemical Engineering, Graduate School of Engineering Science, Osaka University , 1-3 Machikaneyamacho, Toyonaka, Osaka 560-8531, Japan
| | - Peter Walde
- Laboratory of Polymer Chemistry, Department of Materials, ETH Zürich , Vladimir-Prelog-Weg 5, 8093 Zürich, Switzerland
| | - Hiroshi Umakoshi
- Bio-Inspired Chemical Engineering Lab, Division of Chemical Engineering, Graduate School of Engineering Science, Osaka University , 1-3 Machikaneyamacho, Toyonaka, Osaka 560-8531, Japan
| |
Collapse
|
11
|
Novak S, Morasi Piperčić S, Makarić S, Primožič I, Ćurlin M, Štefanić Z, Domazet Jurašin D. Interplay of Noncovalent Interactions in Ionic Liquid/Sodium Bis(2-ethylhexyl) Sulfosuccinate Mixtures: From Lamellar to Bicontinuous Cubic Liquid Crystalline Phase. J Phys Chem B 2016; 120:12557-12567. [PMID: 27973815 DOI: 10.1021/acs.jpcb.6b10515] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Phase transitions in mixtures of imidazolium based ionic liquid ([C12mim]Br) and anionic double tail surfactant, sodium bis(2-ethylhexyl) sulfosuccinate (AOT), were studied using a multitechnique approach. The system was primarily chosen for its expected ability to form a variety of lamellar and nonlamellar liquid crystalline phases which can transform into each other via different mechanisms. Depending on the bulk composition and total surfactant concentration, mixed micelles, coacervates, and lamellar and inverse bicontinuous cubic liquid crystalline phase were observed. Along with electrostatic attractions and geometric packing constraints, additional noncovalent interactions (hydrogen bonding, π-π stacking) enhanced attractive interactions and stabilized low curvature aggregates. At stoichiometric conditions, coexistence of coacervates and vesicles was found at lower, while bicontinuous cubic phase and vesicles were present at higher total surfactant concentrations. The phase transitions from a dispersed lamellar to inverse cubic bicontinuous phase occur as a consequence of charge shielding and closer packing of oppositely charged headgroups followed by a change in bilayer curvature. Transition is continuous with both phases coexisting over a relatively broad range of concentrations and very likely involves a sponge-like phase as a structural intermediate. To the best of our knowledge, this type of phase transition has not been observed before in surface active ionic liquid/surfactant mixtures.
Collapse
Affiliation(s)
- Sanja Novak
- Department of Chemistry, Faculty of Science, University of Zagreb , Horvatovac 102a, 10 000 Zagreb, Croatia.,Institute of Complex Systems, Forschungszentrum Jülich , Leo-Brandt Strasse, 52425 Jülich, Germany
| | - Sara Morasi Piperčić
- Department of Chemistry, Faculty of Science, University of Zagreb , Horvatovac 102a, 10 000 Zagreb, Croatia
| | - Sandro Makarić
- Department of Chemistry, Faculty of Science, University of Zagreb , Horvatovac 102a, 10 000 Zagreb, Croatia
| | - Ines Primožič
- Department of Chemistry, Faculty of Science, University of Zagreb , Horvatovac 102a, 10 000 Zagreb, Croatia
| | - Marija Ćurlin
- Department of Histology and Embryology, University of Zagreb School of Medicine , Šalata 3, 10 000 Zagreb, Croatia
| | - Zoran Štefanić
- Division of Physical Chemistry, Ruđer Bošković Institute , Bijenička cesta 54, 10 000 Zagreb, Croatia
| | - Darija Domazet Jurašin
- Division of Physical Chemistry, Ruđer Bošković Institute , Bijenička cesta 54, 10 000 Zagreb, Croatia
| |
Collapse
|
12
|
Kundu K, Das A, Bardhan S, Chakraborty G, Ghosh D, Kar B, Saha SK, Senapati S, Mitra RK, Paul BK. The mixing behaviour of anionic and nonionic surfactant blends in aqueous environment correlates in fatty acid ester medium. Colloids Surf A Physicochem Eng Asp 2016. [DOI: 10.1016/j.colsurfa.2016.05.078] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
|
13
|
Mamusa M, Resta C, Barbero F, Carta D, Codoni D, Hatzixanthis K, McArthur M, Berti D. Interaction between a cationic bolaamphiphile and DNA: The route towards nanovectors for oligonucleotide antimicrobials. Colloids Surf B Biointerfaces 2016; 143:139-147. [PMID: 26998876 DOI: 10.1016/j.colsurfb.2016.03.031] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2015] [Revised: 03/08/2016] [Accepted: 03/10/2016] [Indexed: 12/12/2022]
Abstract
Bacterial resistance to antimicrobials is a global threat that requires development of innovative therapeutics that circumvent its onset. The use of Transcription Factor Decoys (TFDs), DNA fragments that act by blocking essential transcription factors in microbes, represents a very promising approach. TFDs require appropriate carriers to protect them from degradation in biological fluids and transfect them through the bacterial cell wall into the cytoplasm, their site of action. Here we report on a bolaform cationic surfactant, [12-bis-THA]Cl2, with proven transfection activity in vivo. By studying the physical-chemical properties of its aqueous solutions with light scattering, cryo-TEM, ζ-potential, absorption and fluorescence spectroscopies, we prove that the bolaamphiphiles associate into transient vesicles which convert into one-dimensional elongated structures over time. These surfactant assemblies complex TFDs with extremely high efficiency, if compared to common cationic amphiphiles. At Z+/-=11, the nanoplexes are stable and have a size of 120nm, and they form independently of the original morphology of the [12-bis-THA]Cl2 aggregate. DNA is compacted in the nanoplexes, as shown through CD spectroscopy and fluorescence, but is readily released in its native form if sodium taurocholate is added.
Collapse
Affiliation(s)
- Marianna Mamusa
- Department of Chemistry "Ugo Schiff" and CSGI, University of Florence. Via della Lastruccia 3, 50019 Sesto Fiorentino (FI), Italy
| | - Claudio Resta
- Department of Chemistry "Ugo Schiff" and CSGI, University of Florence. Via della Lastruccia 3, 50019 Sesto Fiorentino (FI), Italy
| | | | - Davide Carta
- Procarta Biosystems Ltd. Innovation Centre, Norwich Research Park, Norwich NR4 7GJ, UK; Biological Chemistry Department, John Innes Centre, Norwich NR4 7UH, UK
| | - Doroty Codoni
- Procarta Biosystems Ltd. Innovation Centre, Norwich Research Park, Norwich NR4 7GJ, UK; Kuecept Ltd. 16/17 Station Close, Potters Bar EN6 1TL, UK
| | - Kostas Hatzixanthis
- Procarta Biosystems Ltd. Innovation Centre, Norwich Research Park, Norwich NR4 7GJ, UK; School of Pharmacy, University of East Anglia, Norwich NR4 7TJ, UK
| | - Michael McArthur
- Procarta Biosystems Ltd. Innovation Centre, Norwich Research Park, Norwich NR4 7GJ, UK; Norwich Medical School, University of East Anglia, Norwich NR4 7UQ, UK
| | - Debora Berti
- Department of Chemistry "Ugo Schiff" and CSGI, University of Florence. Via della Lastruccia 3, 50019 Sesto Fiorentino (FI), Italy.
| |
Collapse
|
14
|
Pan A, Rakshit S, Sahu S, Bhattacharya SC, Moulik SP. Synergism between anionic double tail and zwitterionic single tail surfactants in the formation of mixed micelles and vesicles, and use of the micelle templates for the synthesis of nano-structured gold particles. Colloids Surf A Physicochem Eng Asp 2015. [DOI: 10.1016/j.colsurfa.2015.06.032] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
15
|
Saha R, Pohorille A, Chen IA. Molecular crowding and early evolution. ORIGINS LIFE EVOL B 2014; 44:319-24. [PMID: 25585804 DOI: 10.1007/s11084-014-9392-3] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2014] [Accepted: 10/31/2014] [Indexed: 10/24/2022]
Abstract
The environment of protocells might have been crowded with small molecules and functional and non-specific polymers. In addition to altering conformational equilibria, affecting reaction rates and changing the structure and activity of water, crowding might have enhanced the capabilities of protocells for evolutionary innovation through the creation of extended neutral networks in the fitness landscape.
Collapse
Affiliation(s)
- Ranajay Saha
- Department of Chemistry and Biochemistry, University of California, Santa Barbara, CA, USA
| | | | | |
Collapse
|
16
|
Ji X, Shi C, Qi L, Guo Y, Li N, Li Z, Luan Y. Preparation, properties and in vivo pharmacokinetic study of drug vesicles composed of diphenhydramine and AOT. RSC Adv 2014. [DOI: 10.1039/c4ra09294e] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
|
17
|
Spectrometric study on the binding of curcumin with AOT: Effect of micelle-to-vesicle transition. Food Chem 2014; 161:136-41. [DOI: 10.1016/j.foodchem.2014.03.129] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2013] [Revised: 03/05/2014] [Accepted: 03/27/2014] [Indexed: 11/21/2022]
|
18
|
Srivastava A, Ismail K. Solubilization of polycyclic aromatic hydrocarbons in aqueous sodium dioctylsulfosuccinate solutions. J Mol Liq 2014. [DOI: 10.1016/j.molliq.2014.02.007] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
|
19
|
Tavano L, Gentile L, Oliviero Rossi C, Muzzalupo R. Novel gel-niosomes formulations as multicomponent systems for transdermal drug delivery. Colloids Surf B Biointerfaces 2013; 110:281-8. [DOI: 10.1016/j.colsurfb.2013.04.017] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2013] [Revised: 03/27/2013] [Accepted: 04/18/2013] [Indexed: 11/25/2022]
|
20
|
Preparation of microparticles composed of amphiphilic poly(γ-glutamic acid) through hydrophobic interactions. Polym J 2013. [DOI: 10.1038/pj.2013.74] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
|
21
|
Thapa U, Ismail K. Urea effect on aggregation and adsorption of sodium dioctylsulfosuccinate in water. J Colloid Interface Sci 2013; 406:172-7. [DOI: 10.1016/j.jcis.2013.06.009] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2013] [Revised: 05/30/2013] [Accepted: 06/02/2013] [Indexed: 10/26/2022]
|
22
|
Rakshit S, Saha R, Singha A, Seddigi ZSA, Pal SK. Molecular interaction, co-solubilization of organic pollutants and ecotoxicity of a potential carcinogenic fuel additive MTBE in water. J Mol Liq 2013. [DOI: 10.1016/j.molliq.2013.01.022] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
|
23
|
Picosecond-resolved solvent reorganization and energy transfer in biological and model cavities. Biochimie 2013; 95:1127-35. [PMID: 23376876 DOI: 10.1016/j.biochi.2012.12.018] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2012] [Accepted: 12/21/2012] [Indexed: 11/22/2022]
Abstract
Water molecules in hydrophobic biological cleft/cavities are of contemporary interest for the biomolecular structure and molecular recognition of hydrophobic ligands/drugs. Here, we have explored picosecond-resolved solvation dynamics of water molecules and associated polar amino acids in the hydrophobic cleft around Cys-34 position of Endogenous Serum Albumin (ESA). While site selective acrylodan labeling to Cys-34 allows us to probe solvation in the cleft, Förster resonance energy transfer (FRET) from intrinsic fluorescent amino acid Trp 214 to the extrinsic acrylodan probes structural integrity of the protein in our experimental condition. Temperature dependent solvation in the cleft clearly shows that the dynamics follows Arrhenius type behavior up to 60 °C, after which a major structural perturbation of the protein is evident. We have also monitored polarization gated dynamics of the acrylodan probe and FRET from Trp 214 to acrylodan at various temperatures. The dynamical behavior of the immediate environments around the probe acrylodan in the cleft has been compared with a model biomimetic cavity of a reverse micelle (w0 = 5). Using same fluorescent probe of acrylodan, we have checked the structural integrity of the model cavity at various temperatures using picosecond-resolved FRET from Trp to acrylodan in the cavity. We have also estimated possible distribution of donor-acceptor distances in the protein and reverse micelles. Our studies reveal that the energetics of the water molecules in the biological cleft is comparable to that in the model cavity indicating a transition from bound state to quasibound state, closely consistent with a recent MD simulation study.
Collapse
|
24
|
Bencini A, Caddeo F, Caltagirone C, Garau A, Hurstouse MB, Isaia F, Lampis S, Lippolis V, Lopez F, Meli V, Monduzzi M, Mostallino MC, Murgia S, Puccioni S, Schmidt J, Secci PP, Talmon Y. An OFF–ON chemosensor for biological and environmental applications: sensing Cd2+ in water using catanionic vesicles and in living cells. Org Biomol Chem 2013; 11:7751-9. [DOI: 10.1039/c3ob41420e] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
|
25
|
Saha R, Rakshit S, Mitra RK, Pal SK. Microstructure, morphology, and ultrafast dynamics of a novel edible microemulsion. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2012; 28:8309-8317. [PMID: 22571238 DOI: 10.1021/la3012124] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
An edible microemulsion (ME) composed of Tween 80/butyl lactate/isopropyl myristate (IPM)/water has been formulated. Pseudoternary phase diagram of the system contains a large single isotropic region. The phase behavior of the system is also studied at low pH (2.6) and in 0.9% NaCl solution. Conductivity, viscosity, ultrasonic velocity, and compressibility studies find consistent results in the structural transition (from water-in-oil (w/o) to bicontinuous, and from bicontinuous to oil-in-water (o/w)) behavior of the ME. Dynamic light scattering studies reveal the size of the MEs. The absorption and steady state emission spectra of 4-(dicyanomethylene)-2-methyl-6-(p-dimethylamino-styryl)-4H-pyran (DCM) successfully probe the polarity of the ME at its solvation shell and shows the efficacy of hosting model drug molecules. The rotational anisotropy of the dye has been studied to ascertain the geometrical restriction of the probe molecule. Picosecond-resolved fluorescence spectroscopy applies well to study the relaxation dynamics of water in the solvation shell of the MEs. The study finds strong correlation in the relaxation dynamics of water with the structure of host assembly and offers an edible ME system which could act as a potential drug delivery system and nontoxic nanotemplate for other applications.
Collapse
Affiliation(s)
- Ranajay Saha
- Department of Chemical, Biological & Macromolecular Sciences, S.N. Bose National Centre for Basic Sciences, Block JD, Sector III, Salt Lake, Kolkata 700098, India
| | | | | | | |
Collapse
|