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Agatić ZF, Tepavčević V, Puača G, Poša M. Interaction of drug molecules with surfactants below (Benesi-Hildebrand equation) and above the critical micelle concentration (Kawamura equation). Int J Pharm 2024; 665:124675. [PMID: 39265847 DOI: 10.1016/j.ijpharm.2024.124675] [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: 05/28/2024] [Revised: 08/12/2024] [Accepted: 09/05/2024] [Indexed: 09/14/2024]
Abstract
Drug molecules can interact with surfactant molecules either in their monomeric form, where the Benesi-Hildebrand equation determines the binding constant, or when a micellar pseudophase is formed, where the Kawamura equation assesses the partition coefficient. Benesi-Hildebrand plots represent the differential absorbance as a function of surfactant concentration below the critical micelle concentration (CMC), while Kawamura plots show this relationship above the CMC, where the drug can influence the CMC and needs consideration. This review aims to provide an overview of methods for evaluating drug-surfactant interactions in aqueous solutions, particularly below and above the CMC, using spectroscopic data. Understanding these interactions is crucial for pharmacodynamics, affecting drug binding, enzymatic activity, and formulation. Various surfactants were analyzed with diphenhydramine hydrochloride, levofloxacin, phenothiazine, moxifloxacin, and chlorpromazine hydrochloride to determine monomeric binding constants, while sulfathiazole, sodium valproate, cefotaxime, losartan, and metformin hydrochloride were assessed for partitioning coefficient values. Errors in Benesi-Hildebrand plots may arise from considering surfactant concentrations above the CMC, while mistakes in Kawamura plots may stem from neglecting to determine the CMC in the presence of drug molecules, which can alter the surfactant's behavior.
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Affiliation(s)
- Zita Farkaš Agatić
- Department of Pharmacy, Faculty of Medicine, University of Novi Sad, Hajduk Veljkova 3, 21000 Novi Sad, Serbia
| | - Vesna Tepavčević
- Department of Pharmacy, Faculty of Medicine, University of Novi Sad, Hajduk Veljkova 3, 21000 Novi Sad, Serbia.
| | - Gorana Puača
- Department of Pharmacy, Faculty of Medicine, University of Novi Sad, Hajduk Veljkova 3, 21000 Novi Sad, Serbia
| | - Mihalj Poša
- Department of Pharmacy, Faculty of Medicine, University of Novi Sad, Hajduk Veljkova 3, 21000 Novi Sad, Serbia
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Shin YB, Choi JY, Yoon MS, Yoo MK, Shin DH, Lee JW. Evaluation of Anticancer Efficacy of D-α-Tocopheryl Polyethylene-Glycol Succinate and Soluplus ® Mixed Micelles Loaded with Olaparib and Rapamycin Against Ovarian Cancer. Int J Nanomedicine 2024; 19:7871-7893. [PMID: 39114180 PMCID: PMC11304412 DOI: 10.2147/ijn.s468935] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2024] [Accepted: 07/02/2024] [Indexed: 08/10/2024] Open
Abstract
Purpose Ovarian cancer has the highest mortality rate and lowest survival rate among female reproductive system malignancies. There are treatment options of surgery and chemotherapy, but both are limited. In this study, we developed and evaluated micelles composed of D-α-tocopheryl polyethylene-glycol (PEG) 1000 succinate (TPGS) and Soluplus® (SOL) loaded with olaparib (OLA), a poly(ADP-ribose)polymerase (PARP) inhibitor, and rapamycin (RAPA), a mammalian target of rapamycin (mTOR) inhibitor in ovarian cancer. Methods We prepared micelles containing different molar ratios of OLA and RAPA embedded in different weight ratios of TPGS and SOL (OLA/RAPA-TPGS/SOL) were prepared and physicochemical characterized. Furthermore, we performed in vitro cytotoxicity experiments of OLA, RAPA, and OLA/RAPA-TPGS/SOL. In vivo toxicity and antitumor efficacy assays were also performed to assess the efficacy of the mixed micellar system. Results OLA/RAPA-TPGS/SOL containing a 4:1 TPGS:SOL weight ratio and a 2:3 OLA:RAPA molar ratio showed synergistic effects and were optimized. The drug encapsulation efficiency of this formulation was >65%, and the physicochemical properties were sustained for 180 days. Moreover, the formulation had a high cell uptake rate and significantly inhibited cell migration (**p < 0.01). In the in vivo toxicity test, no toxicity was observed, with the exception of the high dose group. Furthermore, OLA/RAPA-TPGS/SOL markedly inhibited tumor spheroid and tumor growth in vivo. Conclusion Compared to the control, OLA/RAPA-TPGS/SOL showed significant tumor inhibition. These findings lay a foundation for the use of TPGS/SOL mixed micelles loaded with OLA and RAPA in the treatment of ovarian cancer.
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Affiliation(s)
- Yu Been Shin
- College of Pharmacy, Chungbuk National University, Cheongju, 28160, Republic of Korea
| | - Ju-Yeon Choi
- Research Institute for Future Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea
| | - Moon Sup Yoon
- College of Pharmacy, Chungbuk National University, Cheongju, 28160, Republic of Korea
| | - Myeong Kyun Yoo
- College of Pharmacy, Chungbuk National University, Cheongju, 28160, Republic of Korea
| | - Dae Hwan Shin
- College of Pharmacy, Chungbuk National University, Cheongju, 28160, Republic of Korea
- Chungbuk National University Hospital, Chungbuk National University, Cheongju, 28644, Republic of Korea
| | - Jeong-Won Lee
- Department of Obstetrics and Gynecology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea
- Samsung Advanced Institute for Health Sciences & Technology, Sungkyunkwan University School of Medicine, Seoul, 06351, Republic of Korea
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Rana AA, Yusaf A, Shahid S, Usman M, Ahmad M, Aslam S, Al-Hussain SA, Zaki MEA. Unveiling the Role of Nonionic Surfactants in Enhancing Cefotaxime Drug Solubility: A UV-Visible Spectroscopic Investigation in Single and Mixed Micellar Formulations. Pharmaceuticals (Basel) 2023; 16:1663. [PMID: 38139790 PMCID: PMC10747636 DOI: 10.3390/ph16121663] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2023] [Revised: 11/18/2023] [Accepted: 11/22/2023] [Indexed: 12/24/2023] Open
Abstract
This study reports the interfacial phenomenon of cefotaxime in combination with nonionic surfactants, Triton X-100 (TX-100) and Tween-80 (TW-80), and their mixed micellar formulations. Cefotaxime was enclosed in a micellar system to improve its solubility and effectiveness. TX-100 and TW-80 were used in an amphiphilic self-assembly process to create the micellar formulation. The effect of the addition of TX-100, a nonionic surfactant, on the ability of TW-80 to solubilize the drug was examined. The values of the critical micelle concentration (CMC) were determined via UV-Visible spectroscopy. Gibbs free energies (ΔGp and ΔGb), the partition coefficient (Kx), and the binding constant (Kb) were also computed. In a single micellar system, the partition coefficient (Kx) was found to be 33.78 × 106 and 2.78 × 106 in the presence of TX-100 and TW-80, respectively. In a mixed micellar system, the value of the partition coefficient for the CEF/TW-80 system is maximum (5.48 × 106) in the presence of 0.0019 mM of TX-100, which shows that TX-100 significantly enhances the solubilizing power of micelles. It has been demonstrated that these surfactants are effective in enhancing the solubility and bioavailability of therapeutic compounds. This study elaborates on the physicochemical characteristics and solubilization of reactive drugs in single and mixed micellar media. This investigation, conducted in the presence of surfactants, shows a large contribution to the binding process via both hydrogen bonding and hydrophobic interactions.
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Affiliation(s)
- Aysha Arshad Rana
- Department of Chemistry, Government College Women University, Faisalabad 38000, Pakistan
| | - Amnah Yusaf
- Department of Chemistry, Government College Women University, Faisalabad 38000, Pakistan
| | - Salma Shahid
- Department of Biochemistry, Government College Women University, Faisalabad 38000, Pakistan
| | - Muhammad Usman
- Department of Chemistry, Government College University, Faisalabad 38000, Pakistan
| | - Matloob Ahmad
- Department of Chemistry, Government College University, Faisalabad 38000, Pakistan
| | - Sana Aslam
- Department of Chemistry, Government College Women University, Faisalabad 38000, Pakistan
| | - Sami A. Al-Hussain
- Department of Chemistry, College of Science, Imam Mohammad Ibn Saud Islamic University (IMSIU), Riyadh 11623, Saudi Arabia
| | - Magdi E. A. Zaki
- Department of Chemistry, College of Science, Imam Mohammad Ibn Saud Islamic University (IMSIU), Riyadh 11623, Saudi Arabia
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4
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Khokhar V, Pandey S. Constituent- and Composition-Dependent Surfactant Aggregation in (Lanthanide Salt + Urea) Deep Eutectic Solvents. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:5129-5136. [PMID: 37001023 DOI: 10.1021/acs.langmuir.3c00189] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/19/2023]
Abstract
Due to the ease of tailoring the physicochemical properties by simply changing a constituent or composition, deep eutectic solvents (DESs) possess widely varying capabilities for surfactant self-assembly that could depend on the surfactant headgroup charge. The self-aggregation process of three surfactants, sodium dodecylsulfate (SDS), cetyltrimethylammonium bromide (CTAB), and Triton X-100 (TX-100), dissolved in DESs composed of a lanthanide salt (Ln) and urea (U) is investigated. The role of the identity of the metal salt is assessed by using [La(NO3)3·6H2O] (La) and [Ce(NO3)3·6H2O] (Ce) and that of the composition is deciphered by systematically changing the mole ratio of the metal salt and urea in (La/U) DESs. The response to a fluorescence probe pyrene-1-carboxaldehyde along with electrical conductance and surface tension measurements is used to obtain the critical aggregation concentration (CAC). While the CACs in 1:3.5 (Ln/U) for SDS are significantly lower than that in water, the values are marginally higher for CTAB and TX-100. The CACs for all three surfactants are similar in 1:3.5 (La/U) and (Ce/U) DESs, implying that the identity of the metal in the salt is not so important. Increasing the urea composition in (La/U) DESs results in increased CAC for SDS and CTAB; however, a minimal decrease in CAC is observed for TX-100. From the temperature dependence of CAC, thermodynamic parameters, ΔGagg0, ΔHagg0, and ΔSagg0, of the surfactant self-aggregation process are estimated. These parameters reveal that while at a lower urea content, the SDS/CTAB self-assembly process is enthalpically driven, it becomes entropically favored at higher urea concentrations. The TX-100 self-aggregation in these DESs is found to be strongly enthalpically favored and entropically un-favored. These parameters are explained as a combination of passage of the solvophobic surfactant chain from the bulk DES to the aggregate pseudo-phase and differential orientation/organization of DES constituents around surfactant monomers and/or aggregates.
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Affiliation(s)
- Vaishali Khokhar
- Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India
| | - Siddharth Pandey
- Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India
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5
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Wu R, Tian M, Shu C, Zhou C, Guan W. Determination of the critical micelle concentration of surfactants using fluorescence strategies. SOFT MATTER 2022; 18:8920-8930. [PMID: 36440607 DOI: 10.1039/d2sm01320g] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
The increasing importance of surfactants in various fields has led to growing interest in the comprehensive characterization of surfactants. The critical micelle concentration (CMC), the most fundamental property of surfactants, is a parameter that must be measured. In particular, with the continuous expansion of the molecular structure of surfactants, numerous novel amphiphilic molecules have been developed that are capable of forming ordered aggregates in various solvent systems. Fluorescence spectroscopy, based on the differences in fluorescence intensity and wavelength of the fluorescent probe in the solvent phase and micellar phase, can sensitively detect the CMC of surfactants. This review aims to summarize the various fluorescence methods used to determine the CMC, including aggregation-induced emission (AIE), excimer formation, intramolecular charge transfer (ICT), and other miscellaneous strategies. The difficulties and limitations in the CMC determination process are also described. Further suggestions are provided to guide the existing fluorescence probes and the corresponding fluorescence methods to detect critical aggregation concentrations of amphiphilic molecules.
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Affiliation(s)
- Riliga Wu
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, China.
| | - Mingce Tian
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, China.
| | - Chang Shu
- Affiliated Eye Hospital of Wenzhou Medical University, Wenzhou 325027, China.
| | - Chengcheng Zhou
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, China.
| | - Weijiang Guan
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, China.
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6
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Wang J, Cheng J, Tu K, Wang Y, Yu Q, Zhang L, Cheng Z. Fluorinated reversed micelles by polymerization-induced self-assembly with main-chain-type semifluorinated alternating copolymer. Eur Polym J 2022. [DOI: 10.1016/j.eurpolymj.2022.111493] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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7
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Ibuprofen molecular aggregation by direct back-face transmission steady-state fluorescence. Photochem Photobiol Sci 2022; 21:1637-1645. [PMID: 35665917 PMCID: PMC9166242 DOI: 10.1007/s43630-022-00247-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2022] [Accepted: 05/12/2022] [Indexed: 11/10/2022]
Abstract
Direct back-face transmission steady-state fluorescence was successfully applied to the study of aggregation of ibuprofen and ibuprofenate anion in solution taking advantage of its own fluorescence. The analysis of the experimental data involves the use of the differential reabsorption model to account for re-absorption phenomenon and the closed association model to describe aggregation. The fluorescence quantum yield of ibuprofenate increases when it aggregates in the presence of sodium, but it markedly decreases when 1-butyl-3-methylimidazolium is used as counterion. The proposed methodology allows the accurate determination of the critical aggregation concentrations and the mean aggregation numbers. Results were supported by complementary techniques such as time-resolved fluorescence, 1H-NMR and small-angle neutron and X-ray scattering. The developed technique constitutes a promising strategy to characterize the aggregation of poorly fluorescent surfactants that aggregates at high concentrations and hence at high absorbance values, conditions in which the most common right-angle configuration for fluorescence acquisition is troublesome due to re-absorption.
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8
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Hasan T, Abdul Rub M, Tuhinur R. Joy M, Rana S, Khan F, Anamul Hoque M, Kabir M. Clouding and thermodynamic behavior of the triton X-100 + metformin hydrochloride drug mixture: Investigation of the impacts of potassium salts. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.118853] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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9
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Chowdhury S, Shrivastava S, Kakati A, Sangwai JS. Comprehensive Review on the Role of Surfactants in the Chemical Enhanced Oil Recovery Process. Ind Eng Chem Res 2022. [DOI: 10.1021/acs.iecr.1c03301] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Satyajit Chowdhury
- Gas Hydrate and Flow Assurance Laboratory, Petroleum Engineering Program, Department of Ocean Engineering, Indian Institute of Technology Madras, Chennai 600 036, India
- Assam Energy Institute, A Centre of Rajiv Gandhi Institute of Petroleum Technology, Sivasagar, Assam 785697, India
| | - Saket Shrivastava
- Department of Petroleum Engineering and Earth Sciences, University of Petroleum and Energy Studies, Dehradun 248001, India
| | - Abhijit Kakati
- Reservoir Rock Fluid Interaction Laboratory, Department of Chemical Engineering, Indian Institute of Technology Guwahati, Amingaon, Guwahati 781039, Assam
| | - Jitendra S. Sangwai
- Gas Hydrate and Flow Assurance Laboratory, Petroleum Engineering Program, Department of Ocean Engineering, Indian Institute of Technology Madras, Chennai 600 036, India
- Department of Chemical Engineering, Indian Institute of Technology Madras, Chennai 600 036, India
- Center of Excellence on Subsurface Mechanics and Geo-Energy, Indian Institute of Technology Madras, Chennai 600 036, India
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10
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Savenko ES, Kostjukov VV. Coumarin 102 excitation in aqueous media: contributions of vibronic coupling and hydration. NEW J CHEM 2022. [DOI: 10.1039/d1nj05615h] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
For the first time, vibronic coupling was considered when analyzing the excitation of coumarin C102.
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Affiliation(s)
- Evgeniy S. Savenko
- Physics Department, Sevastopol State University, Universitetskaya st., 33, Sevastopol, 299053, Crimea
| | - Victor V. Kostjukov
- Physics Department, Sevastopol State University, Universitetskaya st., 33, Sevastopol, 299053, Crimea
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11
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Bonhomme O, Sanchez L, Benichou E, Brevet PF. Multistep Micellization of Standard Surfactants Evidenced by Second Harmonic Scattering. J Phys Chem B 2021; 125:10876-10881. [PMID: 34530611 DOI: 10.1021/acs.jpcb.1c06673] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Processes involving in solution a reduced number of molecules are difficult to identify and characterize. Here, we show that micellization of standard surfactants, namely sodium dodecyl sulfate and trimethyl tetradecyl ammonium bromide, two nonefficient compounds for quadratic nonlinear optics, can be investigated by second harmonic scattering (SHS). In particular, the formation of aggregates at concentrations smaller than the critical micellar concentration is evidenced through a nonmonotonic behavior of the SHS intensity as a function of the surfactant concentration. A simple model based on chemical equilibria between monomers and micelles is proposed to account for the experimental observations. Signature of long-range molecular orientation correlation is revealed by polarization resolved experiments and is discussed regarding micellization and charge-induced effects.
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Affiliation(s)
- O Bonhomme
- University of Lyon, Université Claude Bernard Lyon 1, CNRS, Institut Lumière Matière, F-69622 Villeurbanne, France
| | - L Sanchez
- University of Lyon, Université Claude Bernard Lyon 1, CNRS, Institut Lumière Matière, F-69622 Villeurbanne, France
| | - E Benichou
- University of Lyon, Université Claude Bernard Lyon 1, CNRS, Institut Lumière Matière, F-69622 Villeurbanne, France
| | - P F Brevet
- University of Lyon, Université Claude Bernard Lyon 1, CNRS, Institut Lumière Matière, F-69622 Villeurbanne, France
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12
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Zhong X, Chen L, Xu J, Cheng K, Wu B. Two-photon and Three-photon Fluorescence of Triton X-100 in the Ultraviolet Region. J Fluoresc 2021; 31:1779-1785. [PMID: 34495466 DOI: 10.1007/s10895-021-02821-1] [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: 07/15/2021] [Accepted: 08/27/2021] [Indexed: 10/20/2022]
Abstract
We report, to our best knowledge, the first observation of two-photon and three-photon fluorescence of Triton X-100 (TX-100) in water and cyclohexane. The observed multiphoton fluorescence (MF) falls in the ultraviolet region 280-340nm as its one photon fluorescence does. Effects of excitation wavelengths and solution concentrations on the fluorescence spectra are investigated. We found the optimal excitation wavelength and solution concentration to obtain the strongest MF. For relatively weaker three-photon fluorescence, there exists fluctuation in its spectrum due to its small SNR. The peak wavelength is around 300nm and only varies slightly with the solution concentration, solvent type, and excitation wavelength, which is quite different from those of other luminophors. This work has extended the wave band of MF to the purple and ultraviolet regions of 280-340nm and study of TX-100 to nonlinear optics field. The results may be potentially applied in ultraviolet MF detection and in manufacturing ultraviolet multiphoton laser in the future. Although for the latter case, there is still a long way to go to enhance its fluorescence efficiency and cross section of stimulated emission beforehand.
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Affiliation(s)
- Xianqiong Zhong
- College of Optoelectronic Engineering, Chengdu University of Information Technology, Chengdu, 610225, China.
| | - Linfeng Chen
- College of Optoelectronic Engineering, Chengdu University of Information Technology, Chengdu, 610225, China
| | - Jiameng Xu
- College of Optoelectronic Engineering, Chengdu University of Information Technology, Chengdu, 610225, China
| | - Ke Cheng
- College of Optoelectronic Engineering, Chengdu University of Information Technology, Chengdu, 610225, China
| | - Bo Wu
- College of Optoelectronic Engineering, Chengdu University of Information Technology, Chengdu, 610225, China
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13
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Pliss EM, Soloviev ME, Loshadkin DV, Molodochkina SV, Kasaikina OT. Kinetic model of polyunsaturated fatty acids oxidation in micelles. Chem Phys Lipids 2021; 237:105089. [PMID: 33965418 DOI: 10.1016/j.chemphyslip.2021.105089] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2021] [Revised: 04/10/2021] [Accepted: 05/04/2021] [Indexed: 10/21/2022]
Abstract
A kinetic model of polyunsaturated fatty acids (PUFAs) radical chain oxidation in micelles is presented, taking into account the diffusion of active intermediates between aqueous and organic phases, and its effect on the detailed mechanism of the process. The model made it possible to indirectly involve the structural changes of micelles and their kinetic characteristics by varying the actual values of the reactions rate constants. The modeling results are in good agreement with experimental data for the oxidation of methyl linoleate and linoleic acid.
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Affiliation(s)
- E M Pliss
- P.G. Demidov Yaroslavl State University, Russian Federation.
| | - M E Soloviev
- Yaroslavl State Technical University, Russian Federation
| | - D V Loshadkin
- Yaroslavl State Technical University, Russian Federation
| | | | - O T Kasaikina
- N.N. Semenov Federal Research Center for Chemical Physics Russian Academy of Sciences, Russian Federation
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14
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Leipert J, Steinbach MK, Tholey A. Isobaric Peptide Labeling on Digital Microfluidics for Quantitative Low Cell Number Proteomics. Anal Chem 2021; 93:6278-6286. [PMID: 33823593 DOI: 10.1021/acs.analchem.1c01205] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Digital microfluidics (DMF) is a technology suitable for bioanalytical applications requiring miniaturized, automated, and multiplexed liquid handling. Its use in LC-MS-based proteomics, however, has so far been limited to qualitative proteome analyses. This is mainly due to the need for detergents that enable facile, reproducible droplet movement, which are compatible with organic solvents commonly used in targeted chemical modifications of peptides. Aiming to implement isobaric peptide labeling, a widely applied technique allowing multiplexed quantitative proteome studies, on DMF devices, we tested different commercially available detergents. We identified the maltoside-based detergent 3-dodecyloxypropyl-1-β-d-maltopyranoside (DDOPM) to enable facile droplet movement and show micelle formation even in the presence of organic solvent, which is necessary for isobaric tandem mass tag (TMT) labeling. The detergent is fully compatible with reversed phase LC-MS, not interfering with peptide identification. Tryptic digestion in the presence of DDOPM was more efficient than without detergent, resulting in more protein identifications. Using this detergent, we report the first on-DMF chip isobaric labeling strategy, with TMT-labeling efficiency comparable to conventional protocols. The newly developed labeling protocol was evaluated in the multiplexed analyses of a protein standard digest spiked into 25 cells. Finally, using only 75 cells per biological replicate, we were able to identify 39 proteins being differentially abundant after treatment of Jurkat T cells with the anticancer drug doxorubicin. In summary, we demonstrate an important step toward multiplexed quantitative proteomics on DMF, which, in combination with larger chip arrays and optimized hardware, could enable high throughput low cell number proteomics.
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Affiliation(s)
- Jan Leipert
- Systematic Proteome Research & Bioanalytics, Institute for Experimental Medicine, Christian-Albrechts-Universität zu Kiel, Kiel 24105, Germany
| | - Max K Steinbach
- Systematic Proteome Research & Bioanalytics, Institute for Experimental Medicine, Christian-Albrechts-Universität zu Kiel, Kiel 24105, Germany
| | - Andreas Tholey
- Systematic Proteome Research & Bioanalytics, Institute for Experimental Medicine, Christian-Albrechts-Universität zu Kiel, Kiel 24105, Germany
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15
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Mayoral E, Arcos-Casarrubias J, Gama Goicochea A. Self – assembly of model surfactants as reverse micelles in nonpolar solvents and their role as interfacial tension modifiers. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2021.126244] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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16
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Ghosh R, Raveendranath R, Kishore N. Unraveling diverse action of triton X-100 and methimazole on lysozyme fibrillation/aggregation: Physicochemical insights. Int J Biol Macromol 2020; 167:736-745. [PMID: 33278448 DOI: 10.1016/j.ijbiomac.2020.11.210] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2020] [Revised: 11/19/2020] [Accepted: 11/30/2020] [Indexed: 01/18/2023]
Abstract
Identification of functionalities responsible for prevention of fibrillation in proteins is important to design effective drugs in addressing neurodegenerative diseases. We have used nonionic surfactant triton X-100 (TX-100) and antithyroid drug methimazole (MMI) to understand mechanistic aspects of action of these molecules having different functionalities on hen egg-white lysozyme at different stages of fibrillation. After establishing the nucleation, elongation and maturation stages of fibrillation of protein at 57 °C, energetics of interactions with these molecules have been determined by using isothermal titration calorimetry. Differential scanning calorimetry has permitted assessment of thermal stability of the protein at these stages, with or without these molecular entities. The enthalpies of interaction of TX-100 and MMI with protein fibrils suggest importance of hydrogen bonding and polar interactions in their effectiveness towards prevention of fibrils. TX-100, in spite of several polar centres, is unable to prevent fibrillation, rather it promotes. MMI is able to establish polar interactions with interacting strands of the protein and disintegrate fibrils. A rigorous comparison with inhibitors reported in literature highlights importance -OH and >CO functionalities in fibrillation prevention. Even though MMI has hydrogen bonding centres, its efficiency as inhibitor falls after the inhibited lysozyme fibrils further interact and form amorphous aggregates.
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Affiliation(s)
- Ritutama Ghosh
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400 076, India
| | - Revathy Raveendranath
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400 076, India
| | - Nand Kishore
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400 076, India.
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17
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Sakai H, Harada M, Okada T. Reverse micelle chromatography for evaluation of partition of organic solutes to micellar pseudophases. J Colloid Interface Sci 2020; 577:191-198. [DOI: 10.1016/j.jcis.2020.05.074] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2020] [Revised: 05/18/2020] [Accepted: 05/18/2020] [Indexed: 10/24/2022]
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18
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4-Amino-1,2,4-triazoles-3-thiones and 1,3,4-oxadiazoles-2-thiones·palladium(II) recoverable complexes as catalysts in the sustainable Suzuki-Miyaura cross-coupling reaction. J Organomet Chem 2020. [DOI: 10.1016/j.jorganchem.2020.121353] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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19
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Loshadkin DV, Pliss EM, Kasaikina OT. Features of Methyl Linoleate Oxidation in Triton X-100 Micellar Buffer Solutions. RUSS J APPL CHEM+ 2020. [DOI: 10.1134/s1070427220070216] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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20
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Povedailo VA, Lysenko IL, Tikhomirov SA, Yakovlev DL, Tsybulsky DA, Kruhlik AS, Fan F, Martynenko-Makaev YV, Sharko OL, Duong PV, Minh PH, Shmanai VV. Fluorescent Properties of Carboxyfluorescein Bifluorophores. J Fluoresc 2020; 30:629-635. [PMID: 32300977 DOI: 10.1007/s10895-020-02535-w] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2019] [Accepted: 04/02/2020] [Indexed: 11/24/2022]
Abstract
Bright fluorescent probes with enhanced intensities in the fluorescein channel are of great value for plenty of biological applications. To design effective probes one should introduce as many as possible fluorophores to the biomolecule while leaving its native structure as intact as possible. To reach this compromise, we designed and synthesized fluorescein bifluorophores on the 3,5-diaminobenzoic acid scaffold, which allows for insertion of two fluorophores at one modification site of a biomolecule. Rigid structure of the branching linker group allows to minimize self-quenching the fluorophores. However, despite the structure similarities of fluorescein isomers (5-FAM and 6-FAM), different photophysical behavior was observed for the corresponding bifluorophores. Here we made efforts to get insight into these effects with the focus on the media viscosity impact.
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Affiliation(s)
- Vladimir A Povedailo
- B.I. Stepanov Institute of Physics, National Academy of Sciences of Belarus, 68 Nezavisimost' Ave, Minsk, 220072, Belarus
| | - Ivan L Lysenko
- Institute of Physical Organic Chemistry, National Academy of Sciences of Belarus, 13 Surganova str, 220072, Minsk, Belarus
| | - Sergei A Tikhomirov
- B.I. Stepanov Institute of Physics, National Academy of Sciences of Belarus, 68 Nezavisimost' Ave, Minsk, 220072, Belarus
| | - Dmitrii L Yakovlev
- B.I. Stepanov Institute of Physics, National Academy of Sciences of Belarus, 68 Nezavisimost' Ave, Minsk, 220072, Belarus
| | - Dmitry A Tsybulsky
- Institute of Physical Organic Chemistry, National Academy of Sciences of Belarus, 13 Surganova str, 220072, Minsk, Belarus
| | - Aliaksandr S Kruhlik
- Institute of Physical Organic Chemistry, National Academy of Sciences of Belarus, 13 Surganova str, 220072, Minsk, Belarus
| | - Fan Fan
- Institute of Physical Organic Chemistry, National Academy of Sciences of Belarus, 13 Surganova str, 220072, Minsk, Belarus
| | - Yury V Martynenko-Makaev
- Institute of Physical Organic Chemistry, National Academy of Sciences of Belarus, 13 Surganova str, 220072, Minsk, Belarus
| | - Olga L Sharko
- Institute of Physical Organic Chemistry, National Academy of Sciences of Belarus, 13 Surganova str, 220072, Minsk, Belarus
| | - Pham V Duong
- Institute of Physics, Vietnam Academy of Science and Technology, 10 Dao Tan, Ba Dinh, Hanoi, Vietnam
| | - Pham H Minh
- Institute of Physics, Vietnam Academy of Science and Technology, 10 Dao Tan, Ba Dinh, Hanoi, Vietnam
| | - Vadim V Shmanai
- Institute of Physical Organic Chemistry, National Academy of Sciences of Belarus, 13 Surganova str, 220072, Minsk, Belarus.
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21
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Birch H, Redman AD, Letinski DJ, Lyon DY, Mayer P. Determining the water solubility of difficult-to-test substances: A tutorial review. Anal Chim Acta 2019; 1086:16-28. [DOI: 10.1016/j.aca.2019.07.034] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2019] [Revised: 07/04/2019] [Accepted: 07/18/2019] [Indexed: 11/29/2022]
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22
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de Souza RN, Jora MZ, Duarte LGTA, Clinckspoor KJ, Atvars TDZ, Sabadini E. A new interpretation of the mechanism of wormlike micelle formation involving a cationic surfactant and salicylate. J Colloid Interface Sci 2019; 552:794-800. [PMID: 31212113 DOI: 10.1016/j.jcis.2019.05.025] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2019] [Revised: 05/04/2019] [Accepted: 05/06/2019] [Indexed: 10/26/2022]
Abstract
HYPOTHESIS When tetradecyltrimethylammonium bromide, TTAB, is added to aqueous solution of sodium salicylate, NaSal, the threading of the aromatic anion into the micellar palisade leads to the formation of wormlike micelles. Based on the calorimetric titration of NaSal with TTAB, and on the lifetime of fluorescence of salicylate, we propose that the aggregation of the two components directly leads to the formation of wormlike micelles, without any pre-aggregation. EXPERIMENTS By using an isothermal titration calorimeter, aliquots of TTAB were added to a dilute solution of NaSal. The energy involved in each addition was then integrated and the variation of enthalpy was determined. In the same range of concentrations and molar ratios, the surface tensiometry and time-resolved emission spectroscopy experiments were performed. FINDINGS A very characteristic calorimetric signal associated with wormlike micelle formation was obtained, being the enthalpy variation of this process, ΔWLMH2980 < 0. When 1.2 mmol L-1 of NaSal is titrated with 11.0 mmol L-1 of TTAB at 298.15 K, ΔfH2980 = -10.31 kJ per mol of injectant. By adding TTAB to NaSal solution, two fluorescence lifetimes of salicylate were observed solely after wormlike micelle being formed. The correspondent lifetime values of 4.0 ns and 7.2 ns are respectively associated with the free and associated species of salicylate. The new results demonstrated that wormlike micelles are the first aggregate formed when TTAB is added to salicylate. This aspect is relevant for understanding the mechanism of wormlike micelles formation.
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Affiliation(s)
- Renato Nunes de Souza
- Physical Chemistry Department, Institute of Chemistry, University of Campinas-UNICAMP, P.O. Box 6154, 13084-862 Campinas, SP, Brazil
| | - Manazael Zuliani Jora
- Physical Chemistry Department, Institute of Chemistry, University of Campinas-UNICAMP, P.O. Box 6154, 13084-862 Campinas, SP, Brazil
| | | | - Karl Jan Clinckspoor
- Physical Chemistry Department, Institute of Chemistry, University of Campinas-UNICAMP, P.O. Box 6154, 13084-862 Campinas, SP, Brazil
| | - Teresa Dib Zambon Atvars
- Physical Chemistry Department, Institute of Chemistry, University of Campinas-UNICAMP, P.O. Box 6154, 13084-862 Campinas, SP, Brazil
| | - Edvaldo Sabadini
- Physical Chemistry Department, Institute of Chemistry, University of Campinas-UNICAMP, P.O. Box 6154, 13084-862 Campinas, SP, Brazil.
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23
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Szymczyk K, Taraba A, Szaniawska M. Interactions of Tween 20, 60 and 80 with dye molecules: Spectroscopic analysis. J Mol Liq 2019. [DOI: 10.1016/j.molliq.2019.111227] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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24
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Zhang L, Chai X, Sun P, Yuan B, Jiang B, Zhang X, Liu M. The Study of the Aggregated Pattern of TX100 Micelle by Using Solvent Paramagnetic Relaxation Enhancements. Molecules 2019; 24:molecules24091649. [PMID: 31027389 PMCID: PMC6539090 DOI: 10.3390/molecules24091649] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2019] [Revised: 04/19/2019] [Accepted: 04/25/2019] [Indexed: 11/16/2022] Open
Abstract
TX100 (Triton X-100) is a typical nonionic surfactant that is widely used in biology. However, the detailed aggregated conformation of TX100, such as the boundary between the polar region and the nonpolar region, and the arrangement of hydrophobic chains in micelles, are still controversial. In the manuscript, the aggregation pattern of TX100 has been studied using sPREs (solvent Paramagnetic Relaxation Enhancements)-based NMR (Nuclear Magnetic Resonance spectroscopy). It was found that the average positions of the protons in the TX100 micelle are consistent with those in the multilayer staggered spherical micelle model with the p-tertoctylphenyl groups dispersing in the different layers.
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Affiliation(s)
- Liang Zhang
- State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, National Center for Magnetic Resonance in Wuhan, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan 430071, China.
- University of Chinese Academy of Sciences, Beijing 100049, China.
- School of Physics and Optoelectronic Engineering, Yangtze University, Jingzhou 430023, China.
| | - Xin Chai
- State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, National Center for Magnetic Resonance in Wuhan, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan 430071, China.
- University of Chinese Academy of Sciences, Beijing 100049, China.
| | - Peng Sun
- State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, National Center for Magnetic Resonance in Wuhan, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan 430071, China.
| | - Bin Yuan
- State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, National Center for Magnetic Resonance in Wuhan, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan 430071, China.
| | - Bin Jiang
- State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, National Center for Magnetic Resonance in Wuhan, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan 430071, China.
| | - Xu Zhang
- State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, National Center for Magnetic Resonance in Wuhan, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan 430071, China.
| | - Maili Liu
- State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, National Center for Magnetic Resonance in Wuhan, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan 430071, China.
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25
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Determination of the Critical Micelle Concentration of Neutral and Ionic Surfactants with Fluorometry, Conductometry, and Surface Tension—A Method Comparison. J Fluoresc 2018; 28:465-476. [DOI: 10.1007/s10895-018-2209-4] [Citation(s) in RCA: 86] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2017] [Accepted: 01/04/2018] [Indexed: 01/08/2023]
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26
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Customized tuning of aggregation-induced emission of a napthalimide dye by surfactants and cyclodextrin. J Colloid Interface Sci 2017; 499:46-53. [DOI: 10.1016/j.jcis.2017.03.097] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2017] [Revised: 03/22/2017] [Accepted: 03/22/2017] [Indexed: 11/20/2022]
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27
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Sikwal DR, Kalhapure RS, Jadhav M, Rambharose S, Mocktar C, Govender T. Non-ionic self-assembling amphiphilic polyester dendrimers as new drug delivery excipients. RSC Adv 2017. [DOI: 10.1039/c6ra28100a] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Solubility enhancement of poorly soluble antibiotics via self-assembling nano systems could be a promising approach to effectively treat bacterial infections in the current scenario of evolving resistant species.
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Affiliation(s)
- Dhiraj R. Sikwal
- Discipline of Pharmaceutical Sciences
- University of KwaZulu-Natal
- Durban
- South Africa
| | - Rahul S. Kalhapure
- Discipline of Pharmaceutical Sciences
- University of KwaZulu-Natal
- Durban
- South Africa
| | - Mahantesh Jadhav
- Discipline of Pharmaceutical Sciences
- University of KwaZulu-Natal
- Durban
- South Africa
| | - Sanjeev Rambharose
- Discipline of Pharmaceutical Sciences
- University of KwaZulu-Natal
- Durban
- South Africa
| | - Chunderika Mocktar
- Discipline of Pharmaceutical Sciences
- University of KwaZulu-Natal
- Durban
- South Africa
| | - Thirumala Govender
- Discipline of Pharmaceutical Sciences
- University of KwaZulu-Natal
- Durban
- South Africa
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28
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Effect of anionic surfactants on the surface plasmon resonance band of silver nanoparticles: Determination of critical micelle concentration. J Mol Liq 2016. [DOI: 10.1016/j.molliq.2016.09.014] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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29
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Lee KKH, Sahin YZ, Neeleman R, Trout BL, Kayser V. Quantitative determination of the surfactant-induced split ratio of influenza virus by fluorescence spectroscopy. Hum Vaccin Immunother 2016; 12:1757-65. [PMID: 26901837 DOI: 10.1080/21645515.2016.1141846] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
Abstract
The majority of marketed seasonal influenza vaccines are prepared using viruses that are chemically inactivated and treated with a surfactant. Treating with surfactants has important consequences: it produces 'split viruses' by solubilizing viral membranes, stabilizes free membrane proteins and ensures a low level of reactogenicity while retaining high vaccine potency. The formulation stability and potency of split influenza vaccines are largely determined by the specifics of this 'splitting' process; namely, the consequent conformational changes of proteins and interactions of solubilized particles, which may form aggregates. Robust methods to quantitatively determine the split ratio need to be developed before optimal splitting conditions can be investigated to streamline production of superior influenza vaccines. Here, we present a quantitative method, based on both steady-state and time-resolved fluorescence spectroscopy, to calculate the split ratio of the virus after surfactant treatment. We use the lipophilic dye Nile Red (NR) as a probe to elucidate molecular interactions and track changes in molecular environments. Inactivated whole influenza viruses obtained from a sucrose gradient were incubated with NR and subsequently treated with increasing concentrations of the surfactant Triton X-100 (TX-100) to induce virus splitting. NR's emission spectra showed that the addition of TX-100 caused ˜27 nm red-shifts in the emission peak, indicative of increasingly hydrophilic environments surrounding NR. The emission spectra of NR at different surfactant concentrations were analyzed with multi-peak fitting to ascertain the number of different micro-environments surrounding NR and track its population change in these different environments. Results from both the emission spectra and fluorescence lifetime spectroscopy revealed that NR showed presence in 3 distinct molecular environments. The split ratio of the virus was then calculated from the percentages of NR in these environments using both fluorescence emission and lifetime data. This study can pave the way for the development of robust methods to rapidly quantify splitting extent during vaccine manufacturing.
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Affiliation(s)
- Kenny Kwon Ho Lee
- a Faculty of Pharmacy, The University of Sydney , Sydney , Australia
| | - Yusuf Ziya Sahin
- a Faculty of Pharmacy, The University of Sydney , Sydney , Australia
| | - Ronald Neeleman
- b Global Technologies Innovation, Sanofi-Pasteur , Marcy l'Etoile , France
| | | | - Veysel Kayser
- a Faculty of Pharmacy, The University of Sydney , Sydney , Australia
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30
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Investigating Two-Photon-Induced Fluorescence in Rhodamine-6G in Presence of Cetyl-Trimethyl-Ammonium-Bromide. J Fluoresc 2016; 26:1573-7. [PMID: 27324955 DOI: 10.1007/s10895-016-1841-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2015] [Accepted: 05/30/2016] [Indexed: 10/21/2022]
Abstract
We investigate the effect of cetyl-trimethyl-ammonium-bromides (CTAB) concentration on the fluorescence of Rhodamine-6G in water. This spectroscopic study of Rhodamine-6G in presence of CTAB was performed using two-photon-induced-fluorescence at 780 nm wavelength using high repetition rate femtosecond laser pulses. We report an increment of ∼10 % in the fluorescence in accordance with ∼12 % enhancement in the absorption intensity of the dye molecule around the critical micellar concentration. We discuss the possible mechanism for the enhancement in the two-photon fluorescence intensity and the importance of critical micellar concentration.
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31
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Mallick S, Pal K, Koner AL. Probing microenvironment of micelle and albumin using diethyl 6-(dimethylamino)naphthalene-2,3-dicarboxylate: An electroneutral solvatochromic fluorescent probe. J Colloid Interface Sci 2016; 467:81-89. [DOI: 10.1016/j.jcis.2015.12.022] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2015] [Revised: 12/08/2015] [Accepted: 12/11/2015] [Indexed: 11/15/2022]
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32
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Synthesis and Characterization of a Novel Series of Amphiphilic Mercapto-1,2,4-Triazole Schiff Base Ligands: Investigation of their Behavior in Hydro-Organic Solutions. J SURFACTANTS DETERG 2016. [DOI: 10.1007/s11743-016-1811-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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33
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Jaiswal S, Mondal R, Paul D, Mukherjee S. Investigating the micellization of the triton-X surfactants: A non-invasive fluorometric and calorimetric approach. Chem Phys Lett 2016. [DOI: 10.1016/j.cplett.2015.12.051] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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34
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De Nicola A, Kawakatsu T, Rosano C, Celino M, Rocco M, Milano G. Self-Assembly of Triton X-100 in Water Solutions: A Multiscale Simulation Study Linking Mesoscale to Atomistic Models. J Chem Theory Comput 2015; 11:4959-71. [DOI: 10.1021/acs.jctc.5b00485] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Antonio De Nicola
- Dipartimento
di Chimica e Biologia, Università di Salerno, I-84084 via
Ponte don Melillo, Salerno, Italy
| | - Toshihiro Kawakatsu
- Department
of Physics, Tohoku University, Aoba, Aramaki, Aoba-ku, Sendai 980-8578, Japan
| | - Camillo Rosano
- Biopolimeri
e Proteomica, IRCCS AOU San Martino-IST, Istituto Nazionale per la Ricerca sul Cancro, Largo R. Benzi 10 I-16132 Genova, Italy
| | - Massimo Celino
- ENEA, C.R. Casaccia, Via Anguillarese 301, I-00123 Roma, Italy
| | - Mattia Rocco
- Biopolimeri
e Proteomica, IRCCS AOU San Martino-IST, Istituto Nazionale per la Ricerca sul Cancro, Largo R. Benzi 10 I-16132 Genova, Italy
| | - Giuseppe Milano
- Dipartimento
di Chimica e Biologia, Università di Salerno, I-84084 via
Ponte don Melillo, Salerno, Italy
- IMAST S.c.a.r.l.
Technological District in Polymer and Composite Engineering, P. leBovio 22, I-80133, Napoli, Italy
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35
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Effect of Polar Organic Solvents on Self-Aggregation of Some Cationic Monomeric and Dimeric Surfactants. J SURFACTANTS DETERG 2015. [DOI: 10.1007/s11743-015-1686-6] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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36
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Fluorophotometric determination of critical micelle concentration (CMC) of ionic and non-ionic surfactants with carbon dots via Stokes shift. Talanta 2015; 132:572-8. [DOI: 10.1016/j.talanta.2014.09.011] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2014] [Revised: 09/05/2014] [Accepted: 09/06/2014] [Indexed: 12/29/2022]
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37
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The removal of Triton X-100 by dialysis is feasible! Anal Bioanal Chem 2014; 407:1107-18. [DOI: 10.1007/s00216-014-8333-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2014] [Revised: 11/06/2014] [Accepted: 11/07/2014] [Indexed: 10/24/2022]
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38
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Bergeron DE. Identification of phase boundaries in surfactant solutions via Compton spectrum quenching. J Phys Chem A 2014; 118:8563-71. [PMID: 24838094 DOI: 10.1021/jp502540n] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The critical micelle concentration and the phase boundary between isolated surfactant molecules and aggregates are probed via fluorescence spectroscopy and a Compton spectrum quenching technique for aqueous and toluenic solutions of Triton X-100 (TX-100). The internal fluorophore of TX-100 provides a convenient probe for the fluorescence measurements, and the appearance of redder bands in the fluorescence spectra and their relationship with aggregation (clustering of TX-100) phenomena is addressed. The Compton spectrum quenching approach makes use of quench indicating parameters (QIPs) commonly measured in liquid scintillation counting experiments. Phase boundaries identified by the QIP-based approach are in excellent accord with the fluorescence-based approach.
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Affiliation(s)
- Denis E Bergeron
- Radiation Physics Division, National Institute of Standards and Technology , Gaithersburg, Maryland 20899-8462, United States
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39
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Wu C, Li NJ, Chen KC, Hsu HF. Determination of critical micelle concentrations of ionic and nonionic surfactants based on relative viscosity measurements by capillary electrophoresis. RESEARCH ON CHEMICAL INTERMEDIATES 2014. [DOI: 10.1007/s11164-014-1614-9] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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40
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Karumbamkandathil A, Ghosh S, Anand U, Saha P, Mukherjee M, Mukherjee S. Micelles of Benzethonium Chloride undergoes spherical to cylindrical shape transformation: An intrinsic fluorescence and calorimetric approach. Chem Phys Lett 2014. [DOI: 10.1016/j.cplett.2014.01.005] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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41
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Xu L, Tremblay ML, Orrell KE, Leclerc J, Meng Q, Liu XQ, Rainey JK. Nanoparticle self-assembly by a highly stable recombinant spider wrapping silk protein subunit. FEBS Lett 2013; 587:3273-80. [DOI: 10.1016/j.febslet.2013.08.024] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2013] [Accepted: 08/20/2013] [Indexed: 01/04/2023]
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42
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Klíčová L, Sebej P, Štacko P, Filippov SK, Bogomolova A, Padilla M, Klán P. CTAB/water/chloroform reverse micelles: a closed or open association model? LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2012; 28:15185-15192. [PMID: 23072317 DOI: 10.1021/la303245e] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
The micellization of cetyltrimethylammonium bromide (CTAB) in chloroform in the presence of water was examined. Three scenarios of the reverse micelle formation, the closed, open and Eicke's association models, were considered in the interpretation of the experimental data. The growth of the aggregates was observed through the changes of NMR signals of associated water, probing the microenvironment of the premicellar aggregates and the interior of reverse micelles. This technique if combined with isothermal titration calorimetry (ITC) revealed that hydrated surfactant premicellar aggregates are already present at ∼6 mM CTAB. NMR, ITC and conductometry were used to determine the critical micelle concentration (cmc) to be ∼40 mM CTAB. It is suggested that the variation of the cmc values reflects the fact that the NMR analysis indicated the beginning of the reverse micelle formation, whereas conductometry and ITC measurements provided the upper limit and an average value of a so-called apparent cmc, respectively. The cmc values were found to be unaffected by the water content. The presence of reverse micelles, the existence of multiple equilibria, and high polydispersity of the samples were evidenced by DOSY NMR spectroscopy. As a result, we validated Eicke's association model, according to which cyclic inverse micelles are formed by a structural reorganization of linear associates within a narrow concentration range, called the apparent cmc. New experimental results have also been gained for micellization of cetyltrimethylammonium chloride (CTAC) in chloroform in the presence of water; a similar mechanism of reverse micelle formation has been suggested.
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Affiliation(s)
- L'ubica Klíčová
- Department of Chemistry, Faculty of Science, Masaryk University, Kamenice 5, 625 00 Brno, Czech Republic
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Morales J, Manso JA, Cid A, Lodeiro C, Mejuto JC. Degradation of carbofuran derivatives in restricted water environments: basic hydrolysis in AOT-based microemulsions. J Colloid Interface Sci 2012; 372:113-20. [PMID: 22325067 DOI: 10.1016/j.jcis.2012.01.022] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2011] [Revised: 01/11/2012] [Accepted: 01/12/2012] [Indexed: 12/19/2022]
Abstract
The effect of sodium bis(2-ethylhexyl)sulfosuccinate/isooctane/water microemulsions on the stability of 2,2-dimethyl-2,3-dihydro-1-benzofuran-7-yl methylcarbamate (carbofuran, CF), 3-hydroxy-2,3-dihydro-2,2-dimethylbenzofuran-7-yl methylcarbamate (3-hydroxycarbofuran, HCF) and 3-keto-2,3-dihydro-2,2-dimethylbenzofuran-7-yl methylcarbamate (3-ketocarbofuran, KCF) in basic media has been studied. The presence of these microheterogeneous media implies a large basic hydrolysis of CF and HCF on increasing surfactant concentration and, also, on increasing water content in the microemulsion. The hydrolysis rate constants are approximately 2- and 10-fold higher than those in pure water for HCF and CF, respectively. In contrast, a steep descent in the rate of decomposition for KCF was observed. These behaviours can be ascribed to the presence of CF derivatives both in the hydrophilic phase and in the lipophilic phase, while the hydroxyl ions are only restricted to the water pool of the microemulsion (hydrophilic phase). The kinetic rate constants for the basic hydrolysis in AOT-based microemulsions have been obtained on the basis of a pseudophase model. Taking into account that an important part of soils are colloids, the possibility of the presence of restricted water environments implies that soil composition and its structure will play an important role in the stability of these carbamates. In fact, we observed that the presence of these restricted aqueous media in the environment, in particular in watersheds and in wastewaters, could reduce significantly the half-life of these pesticides (33% and 91% for HCF and CF, respectively).
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Affiliation(s)
- Jorge Morales
- Department of Physical Chemistry, Faculty of Sciences, University of Vigo, 32004 Ourense, Spain
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