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Miyabe K, Inaba S, Umeda M. A study on attempt for determination of permeation kinetics of coumarin at lipid bilayer of liposomes by using capillary electrophoresis with moment analysis theory. J Chromatogr A 2023; 1687:463691. [PMID: 36542884 DOI: 10.1016/j.chroma.2022.463691] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2022] [Revised: 11/14/2022] [Accepted: 11/28/2022] [Indexed: 11/30/2022]
Abstract
It was tried to develop a moment analysis method for the determination of lipid membrane permeability. The first absolute and second central moments of elution peaks measured by liposome electrokinetic chromatography (LEKC) are analyzed by using moment equations. As a concrete example, elution peak profiles of coumarin in a LEKC system, in which liposomes consisting of 1-palmitoyl-2-oleoyl-sn‑glycero-3-phosphocholine (POPC) and phosphatidylserine (PS) are used as a pseudo-stationary phase, were analyzed. It seems that lipid membrane permeability of coumarin across the lipid bilayer of POPC/PS liposomes was measured by the moment analysis method because previous permeability measurements using parallel artificial membrane permeability assay (PAMPA) and Caco-2 cells indicated that coumarin is permeable across lipid bilayer. However, it was also pointed out that the moment analysis method with LEKC is not effective for the determination of lipid membrane permeability and that it provides information about adsorption/desorption kinetics at lipid bilayer of liposomes. Therefore, different moment equations were also developed for the determination of adsorption/desorption rate constants of coumarin from the LEKC data. It was demonstrated that permeation rate constants at lipid bilayer or adsorption/desorption rate constants can be determined from the LEKC data on the basis of moment analysis theory for the mass transfer phenomena of coumarin at the lipid bilayer of POPC/PS liposomes. Mass transfer kinetics of solutes at lipid bilayer should be determined under the conditions that liposomes originally be because they are self-assembling and dynamic systems formed through weak interactions between phospholipid monomers. The moment analysis method using LEKC is effective for the experimental determination of the mass transfer rate constants at the lipid bilayer of liposomes because neither immobilization nor chemical modification of liposomes is necessary when LEKC data are measured. It is expected that the results of this study contribute to the dissemination of an opportunity for the determination of permeation rate constants or adsorption/desorption rate constants at the lipid bilayer of liposomes to many researchers because capillary electrophoresis is widespread.
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Affiliation(s)
- Kanji Miyabe
- Department of Chemistry, Faculty of Science, Rikkyo University, 3-34-1, Nishi-Ikebukuro, Toshimaku, Tokyo 171-8501, Japan.
| | - Shunta Inaba
- Department of Chemistry, Faculty of Science, Rikkyo University, 3-34-1, Nishi-Ikebukuro, Toshimaku, Tokyo 171-8501, Japan
| | - Momoko Umeda
- Department of Chemistry, Faculty of Science, Rikkyo University, 3-34-1, Nishi-Ikebukuro, Toshimaku, Tokyo 171-8501, Japan
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2
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Jiang H, Zhang H, Yin SJ, Lu M, Wang X, Yang FQ. Determination of lipid-water partition coefficient of neutral and ionic drugs by liposome electrokinetic chromatography. Electrophoresis 2021; 42:1436-1449. [PMID: 33908064 DOI: 10.1002/elps.202000382] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2020] [Revised: 04/17/2021] [Accepted: 04/20/2021] [Indexed: 11/08/2022]
Abstract
Profiling of lipid-water partition coefficients (KL/W ) of drugs is an essential issue during the early stage of drug development. In this study, two liposomes, including 1,2-distearoyl-sn-glycero-3-phosphocholine (DSPC) + cholesterol (Chol) (DSPC/Chol liposomes) and soybean lecithin (SPC) + Chol (SPC/Chol liposomes), were prepared for the liposome electrokinetic chromatography (LEKC) analysis, and the logarithm of lipid-water partition coefficients (log KL/W ) of neutral and ionic drugs were determined based on an iterative method. The log KL/W values determined by the SPC/Chol or DSPC/Chol liposomes LEKC were linearly fitted, which showed a good fitting coefficient (R2 = 0.89). Furthermore, the linear relationship between the data obtained from LEKC system and octanol-water system, immobilized artificial membrane, Caco-2 cell model, and software prediction was analyzed, respectively. Results illustrated that DSPC/Chol liposomes or SPC/Chol liposomes had a good linear relationship with Caco-2 cell model, and R2 was 0.81 and 0.72, respectively. Moreover, the linear free energy relationship analysis suggested that the solute volume, hydrogen bond basicity, and J- were the main descriptors that drove the partition process of solutes in the SPC/Chol or DSPC/Chol LEKC system. In addition, the normalized properties of the SPC/Chol and DSPC/Chol LEKC systems through linear free energy relationship analysis were very close. In short, DSPC/Chol liposomes are more suitable for simulating cell membranes than SPC/Chol liposomes, and the developed LEKC is an effective partitioning model for measuring the log KL/W of drugs.
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Affiliation(s)
- Hui Jiang
- School of Chemistry and Chemical Engineering, Chongqing University, Chongqing, P. R. China
| | - Hao Zhang
- School of Chemistry and Chemical Engineering, Chongqing University, Chongqing, P. R. China
| | - Shi-Jun Yin
- School of Chemistry and Chemical Engineering, Chongqing University, Chongqing, P. R. China
| | - Min Lu
- School of Chemistry and Chemical Engineering, Chongqing University, Chongqing, P. R. China
| | - Xu Wang
- School of Chemistry and Chemical Engineering, Chongqing University, Chongqing, P. R. China
| | - Feng-Qing Yang
- School of Chemistry and Chemical Engineering, Chongqing University, Chongqing, P. R. China
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Immobilization of natural lipid biomembranes and their interactions with choline carboxylates. A nanoplasmonic sensing study. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2019; 1862:183115. [PMID: 31704086 DOI: 10.1016/j.bbamem.2019.183115] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2019] [Revised: 10/13/2019] [Accepted: 10/26/2019] [Indexed: 11/23/2022]
Abstract
The cell membrane is mainly composed of lipid bilayers with inserted proteins and carbohydrates. Lipid bilayers made of purified or synthetic lipids are widely used for estimating the effect of target compounds on cell membranes. However, the composition of such biomimetic membranes is much simpler than the composition of biological membranes. Interactions between compounds and simple composition biomimetic membranes might not demonstrate the effect of target compounds as precisely as membranes with compositions close to real organisms. Therefore, the aim of our study is to construct biomimetic membrane closely mimicking the state of natural membranes. Liposomes were prepared from lipids extracted from L-α-phosphatidylcholine, Escherichia coli, yeast (Saccharomyces cerevisiae) and bovine liver cells through agitation and sonication. They were immobilized onto silicon dioxide (SiO2) sensor surfaces using N-(2-hydroxyethyl)piperazine-N'-2-ethanesulfonic acid buffer with calcium chloride. The biomimetic membranes were successfully immobilized onto the SiO2 sensor surface and detected by nanoplasmonic sensing. The immobilized membranes were exposed to choline carboxylates. The membrane disruption effect was, as expected, more pronounced with increasing carbohydrate chain length of the carboxylates. The results correlated with the toxicity values determined using Vibrio fischeri bacteria. The yeast extracted lipid membranes had the strongest response to introduction of choline laurate while the bovine liver lipid extracted liposomes were the most sensitive towards the shorter choline carboxylates. This implies that the composition of the cell membrane plays a crucial role upon interaction with choline carboxylates, and underlines the necessity of testing membrane systems of different origin to obtain an overall image of such interactions.
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Loughney JW, Minsker K, Ha S, Rustandi RR. Development of an imaged capillary isoelectric focusing method for characterizing the surface charge of mRNA lipid nanoparticle vaccines. Electrophoresis 2019; 40:2602-2609. [PMID: 31218707 PMCID: PMC6771570 DOI: 10.1002/elps.201900063] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2019] [Revised: 06/09/2019] [Accepted: 06/10/2019] [Indexed: 12/12/2022]
Abstract
Lipid nanoparticles (LNPs) have been employed for drug delivery in small molecules, siRNA, mRNA, and pDNA for both therapeutics and vaccines. Characterization of LNPs is challenging because they are heterogeneous mixtures of large complex particles. Many tools for particle size characterization, such as dynamic and static light scattering, have been applied as well as morphology analysis using electron microscopy. CE has been applied for the characterization of many different large particles such as liposomes, polymer, and viruses. However, there have been limited efforts to characterize the surface charge of LNPs and CIEF has not been explored for this type of particle. Typically, LNPs for delivery of oligonucleotides contain at least four different lipids, with at least one being an ionizable cationic lipid. Here, we describe the development of an imaged capillary isoelectric focusing method used to measure the surface charge (i.e., pI) of an LNP-based mRNA vaccine. This method is capable of distinguishing the pI of LNPs manufactured with one or more different ionizable lipids for the purpose of confirming LNP identity in a manufacturing setting. Additionally, the method is quantitative and stability-indicating making it suitable for both process and formulation development.
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Affiliation(s)
- John W. Loughney
- Vaccine Analytical Research & DevelopmentMerck and Co. Inc.West PointPAUSA
| | - Kevin Minsker
- Vaccine Analytical Research & DevelopmentMerck and Co. Inc.West PointPAUSA
| | - Sha Ha
- Vaccine Analytical Research & DevelopmentMerck and Co. Inc.West PointPAUSA
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Pinheiro M, Magalhães J, Reis S. Antibiotic interactions using liposomes as model lipid membranes. Chem Phys Lipids 2019; 222:36-46. [DOI: 10.1016/j.chemphyslip.2019.05.002] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2018] [Revised: 05/07/2019] [Accepted: 05/08/2019] [Indexed: 02/02/2023]
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Jiang L, Cao Y, Ni X, Zhang M, Cao G. Influences of the concentration and the molar ratio of mixed surfactants on the performance of vesicle pseudostationary phase. Electrophoresis 2018; 39:1794-1801. [PMID: 29663471 DOI: 10.1002/elps.201800023] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2018] [Revised: 04/01/2018] [Accepted: 04/09/2018] [Indexed: 02/28/2024]
Abstract
In our previous work, it was found that the vesicles were formed spontaneously by mixing octyltriethylammonium bromide (C8 NE3 Br) with sodium dodecyl benzene sulfonate (SDBS), and the vesicles have been developed as a pseudostationary phase (PSP) in EKC. In the present work, the effects of the concentration and the molar ratio of cationic to anionic surfactant on the vesicle properties and the performances of vesicle PSP in EKC have been investigated. The aggregates at all mixing ratio were negatively charged regardless of which surfactant surplus. As C8 NE3 Br proportion increased, the microviscosity of the vesicle became larger. With the increase in the total surfactant concentration, the migration time window broadened at the molar ratio of C8 NE3 Br to SDBS of 3:7. Unexpectedly, the window became narrowed at molar ratio of 5:5 and 6:4. However, the methylene selectivity of vesicle PSP at all above-mentioned molar ratios enhanced as the total surfactant concentration increased, no matter whether the migration time window enlarged or narrowed. It implied that the vesicle PSP at molar ratio of 5:5 and 6:4 made it possible to obtain a better separation in a shorter time. When the total surfactant concentration was fixed at 20 mM, the methylene selectivity of the vesicle PSP of molar ratio of 5:5 was comparable to that of 3:7, but the migration time shortened by a half.
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Affiliation(s)
- Lingling Jiang
- The Key Laboratory of Food Colloids and Biotechnology, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi, P. R. China
| | - Yuhua Cao
- The Key Laboratory of Food Colloids and Biotechnology, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi, P. R. China
| | - Xinjiong Ni
- The Key Laboratory of Food Colloids and Biotechnology, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi, P. R. China
| | - Min Zhang
- The Key Laboratory of Food Colloids and Biotechnology, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi, P. R. China
| | - Guangqun Cao
- The Key Laboratory of Food Colloids and Biotechnology, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi, P. R. China
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Pure Glaucoma Drugs Are Toxic to Immortalized Human Corneal Epithelial Cells, but They Do Not Destabilize Lipid Membranes. Cornea 2018; 36:1249-1255. [PMID: 28825921 DOI: 10.1097/ico.0000000000001322] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
PURPOSE Most pure glaucoma drugs (pGDs) are hydrophobic substances intended to reduce elevated intraocular pressure. The aims of our study were to determine the toxicity of pGDs (brimonidine tartrate, brinzolamide, latanoprost, timolol maleate, and pilocarpine hydrochloride) on ocular surface cells and to establish whether their toxicity is subsequent to cellular membrane destabilization. METHODS The toxicity of clinically efficient doses of pGDs was measured at different time points in a cell culture of human corneal epithelial cells using a redox indicator. pGD interaction with the plasma membrane was analyzed using a hemolysis assay and liposome electrokinetic chromatography. The capacity of pGDs to induce endoplasmic reticulum stress was investigated by immunoblotting. RESULTS The toxicity assay showed that all pGDs decrease the viability of the epithelial cells to variable degrees. Early toxicity was measured for 4% pilocarpine and 0.15% brimonidine with 60% cell death at 4 hours, whereas 2% pilocarpine and 0.005% latanoprost showed almost 100% toxicity but only after 16 hours. The hemolysis assay and liposome electrokinetic chromatography experiments suggested that interaction between pGDs and lipid membranes is weak and cannot explain cell death through lysis. Immunoblotting revealed that the drugs activate endoplasmic reticulum stress and, with the exception of pilocarpine, have the capacity to induce apoptosis through upregulation of C/EBP homologous protein. CONCLUSIONS Our study indicates that all studied pGDs decrease the viability of the corneal epithelial cells, but none of the tested compounds were able to destabilize cellular membranes. The pGDs seem to be internalized and can induce apoptosis through C/EBP homologous protein recruitment.
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Ruokonen SK, Duša F, Rantamäki AH, Robciuc A, Holma P, Holopainen JM, Abdel-Rehim M, Wiedmer SK. Distribution of local anesthetics between aqueous and liposome phases. J Chromatogr A 2016; 1479:194-203. [PMID: 27955893 DOI: 10.1016/j.chroma.2016.12.005] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2016] [Revised: 11/29/2016] [Accepted: 12/02/2016] [Indexed: 12/26/2022]
Abstract
Liposomes were used as biomimetic models in capillary electrokinetic chromatography (EKC) for the determination of distribution constants (KD) of certain local anesthetics and a commonly used preservative. Synthetic liposomes comprised phosphatidylcholine and phosphatidylglycerol phospholipids with and without cholesterol. In addition, ghost liposomes made from red blood cell (RBC) lipid extracts were used as pseudostationary phase to acquire information on how the liposome composition affects the interactions between anesthetics and liposomes. These results were compared with theoretical distribution coefficients at pH 7.4. In addition to 25°C, the distribution constants were determined at 37 and 42°C to simulate physiological conditions. Moreover, the usability of five electroosmotic flow markers in liposome (LEKC) and micellar EKC (MEKC) was studied. LEKC was proven to be a convenient and fast technique for obtaining data about the distribution constants of local anesthetics between liposome and aqueous phase. RBC liposomes can be utilized for more representative model of cellular membranes, and the results indicate that the distribution constants of the anesthetics are greatly dependent on the used liposome composition and the amount of cholesterol, while the effect of temperature on the distribution constants is less significant.
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Affiliation(s)
| | - Filip Duša
- Department of Chemistry, POB 55, 00014 University of Helsinki, Finland; Institute of Analytical Chemistry of the CAS, v. v. i., Brno, Czechia
| | - Antti H Rantamäki
- Department of Chemistry, POB 55, 00014 University of Helsinki, Finland
| | - Alexandra Robciuc
- Helsinki Eye Lab, Ophthalmology, University of Helsinki and Helsinki University Hospital, Finland
| | - Paula Holma
- Department of Chemistry, POB 55, 00014 University of Helsinki, Finland
| | - Juha M Holopainen
- Helsinki Eye Lab, Ophthalmology, University of Helsinki and Helsinki University Hospital, Finland
| | - Mohamed Abdel-Rehim
- Department of Environmental Science and Analytical Chemistry, Stockholm University, Sweden
| | - Susanne K Wiedmer
- Department of Chemistry, POB 55, 00014 University of Helsinki, Finland.
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Yang H, Ding Y, Gao W, Qi LW, Cao J, Li P. Efficient separation of tanshinones by polyvinylpyrrolidone-stabilized graphene-modified micellar electrokinetic chromatography. Electrophoresis 2015; 36:2874-80. [PMID: 26331266 DOI: 10.1002/elps.201500264] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2015] [Revised: 08/02/2015] [Accepted: 08/11/2015] [Indexed: 11/06/2022]
Abstract
In this work, a PVP-stabilized graphene was used in MEKC for the separation of tanshinones. Seven structurally similar tanshinones were studied, that is, tanshinone IIB, dihydrotanshinone I, tanshinone I, cryptotanshinone, 1,2-dihydrotanshinone I, miltirone, and tanshinone IIA. To achieve optimal conditions, graphene concentration, sample solvent composition, SDS concentration, 2-propanolconcentration, and buffer pH were investigated. At a separation voltage of 30 kV and a 41.5 cm effective length fused-silica capillary, good resolution within 12 min was performed using 10 mM borate buffer (pH 9.3) containing 30 mM SDS, 10% v/v 2-propanol and 6 μg/mL graphene. The method was validated in terms of linearity (r(2) > 0.9970), intra- and inter-day precision were less than 3.56 and 4.83%, respectively. The proposed method was then successfully applied to Danshentong capsule, an herbal preparation from Salvia miltiorrhiza. Our results indicated the high separation efficiency of PVP-stabilized graphene provided new opportunities for the analysis of complex samples.
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Affiliation(s)
- Hua Yang
- State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing, P. R. China
| | - Yao Ding
- State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing, P. R. China
| | - Wen Gao
- State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing, P. R. China
| | - Lian-Wen Qi
- State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing, P. R. China
| | - Jun Cao
- College of Material Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou, P. R. China
| | - Ping Li
- State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing, P. R. China
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Lu J, Ni X, Cao Y, Ma X, Cao G. Electrokinetic chromatographic characterization of novel catanionic surfactants vesicle as pseudostationary phase. Electrophoresis 2014; 36:312-8. [DOI: 10.1002/elps.201400375] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2014] [Revised: 10/08/2014] [Accepted: 10/14/2014] [Indexed: 11/11/2022]
Affiliation(s)
- Jie Lu
- School of Chemical and Material Engineering; Jiangnan University; Wuxi China
| | - Xinjiong Ni
- School of Chemical and Material Engineering; Jiangnan University; Wuxi China
| | - Yuhua Cao
- School of Chemical and Material Engineering; Jiangnan University; Wuxi China
- The Key Laboratory of Food Colloids and Biotechnology; Ministry of Education; Wuxi China
| | - Xinyu Ma
- School of Chemical and Material Engineering; Jiangnan University; Wuxi China
| | - Guangqun Cao
- School of Chemical and Material Engineering; Jiangnan University; Wuxi China
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11
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Vesicles formed by mixed catanionic surfactants as novel pseudostationary phase in electrokinetic chromatography. J Chromatogr A 2014; 1359:296-302. [DOI: 10.1016/j.chroma.2014.07.016] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2014] [Revised: 07/03/2014] [Accepted: 07/07/2014] [Indexed: 11/20/2022]
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12
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Montealegre C, Verardo V, Luisa Marina M, Caboni MF. Analysis of glycerophospho- and sphingolipids by CE. Electrophoresis 2014; 35:779-92. [DOI: 10.1002/elps.201300534] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2013] [Revised: 11/19/2013] [Accepted: 11/19/2013] [Indexed: 12/21/2022]
Affiliation(s)
- Cristina Montealegre
- Department of Analytical Chemistry; Faculty of Chemistry; University of Alcalá; Alcalá de Henares Madrid Spain
| | - Vito Verardo
- Inter-Departmental Centre for Agri-Food Industrial Research (CIRI Agroalimentare); University of Bologna; Piazza Goidanich Cesena (FC) Italy
| | - María Luisa Marina
- Department of Analytical Chemistry; Faculty of Chemistry; University of Alcalá; Alcalá de Henares Madrid Spain
| | - Maria Fiorenza Caboni
- Inter-Departmental Centre for Agri-Food Industrial Research (CIRI Agroalimentare); University of Bologna; Piazza Goidanich Cesena (FC) Italy
- Department of Agricultural and Food Sciences; Alma Mater Studiorum-Università di Bologna; Piazza Goidanich Cesena (FC) Italy
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Lokajová J, Railila A, King AW, Wiedmer SK. Determination of the distribution constants of aromatic compounds and steroids in biphasic micellar phosphonium ionic liquid/aqueous buffer systems by capillary electrokinetic chromatography. J Chromatogr A 2013; 1308:144-51. [DOI: 10.1016/j.chroma.2013.07.109] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2013] [Revised: 07/29/2013] [Accepted: 07/30/2013] [Indexed: 10/26/2022]
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Kato K, Koido M, Kobayashi M, Akagi T, Ichiki T. Statistical fluctuation in zeta potential distribution of nanoliposomes measured by on-chip microcapillary electrophoresis. Electrophoresis 2013; 34:1212-8. [DOI: 10.1002/elps.201200549] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2012] [Revised: 11/26/2012] [Accepted: 11/27/2012] [Indexed: 11/10/2022]
Affiliation(s)
- Kei Kato
- Department of Bioengineering; School of Engineering, The University of Tokyo; Yayoi; Bunkyo-ku; Tokyo; Japan
| | - Masaru Koido
- Department of Bioengineering; School of Engineering, The University of Tokyo; Yayoi; Bunkyo-ku; Tokyo; Japan
| | - Masashi Kobayashi
- Department of Bioengineering; School of Engineering, The University of Tokyo; Yayoi; Bunkyo-ku; Tokyo; Japan
| | - Takanori Akagi
- Department of Bioengineering; School of Engineering, The University of Tokyo; Yayoi; Bunkyo-ku; Tokyo; Japan
| | - Takanori Ichiki
- Department of Bioengineering; School of Engineering, The University of Tokyo; Yayoi; Bunkyo-ku; Tokyo; Japan
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Yakufu P, Qi H, Li M, Ling X, Chen W, Wang Y. CCR4 expressing cells cultured adherently on a capillary wall and formaldehyde fixed as the stationary phase for ligand screening by ACE. Electrophoresis 2013. [DOI: 10.1002/elps.201200376] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Pazilaiti Yakufu
- State Key Laboratory of Natural and Biomimetic Drugs and Department of Pharmaceutical Analysis, School of Pharmaceutical Sciences; Peking University; Beijing; P. R. China
| | - Hui Qi
- Center for Human Disease Genomics and Department of Medical Immunology of School of Basic Medical Science; Peking University; Beijing; P. R. China
| | - Meina Li
- State Key Laboratory of Natural and Biomimetic Drugs and Department of Pharmaceutical Analysis, School of Pharmaceutical Sciences; Peking University; Beijing; P. R. China
| | - Xiaomei Ling
- State Key Laboratory of Natural and Biomimetic Drugs and Department of Pharmaceutical Analysis, School of Pharmaceutical Sciences; Peking University; Beijing; P. R. China
| | - Wenjing Chen
- State Key Laboratory of Natural and Biomimetic Drugs and Department of Pharmaceutical Analysis, School of Pharmaceutical Sciences; Peking University; Beijing; P. R. China
| | - Ying Wang
- Center for Human Disease Genomics and Department of Medical Immunology of School of Basic Medical Science; Peking University; Beijing; P. R. China
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Wiedmer SK, Lokajová J. Capillary electromigration techniques for studying interactions between analytes and lipid dispersions. J Sep Sci 2012; 36:37-51. [DOI: 10.1002/jssc.201200829] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2012] [Revised: 09/26/2012] [Accepted: 09/26/2012] [Indexed: 11/11/2022]
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17
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Franzen U, Østergaard J. Physico-chemical characterization of liposomes and drug substance–liposome interactions in pharmaceutics using capillary electrophoresis and electrokinetic chromatography. J Chromatogr A 2012; 1267:32-44. [DOI: 10.1016/j.chroma.2012.07.018] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2012] [Revised: 07/02/2012] [Accepted: 07/06/2012] [Indexed: 01/19/2023]
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18
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Edwards KA, Bolduc OR, Baeumner AJ. Miniaturized bioanalytical systems: enhanced performance through liposomes. Curr Opin Chem Biol 2012; 16:444-52. [PMID: 22673065 DOI: 10.1016/j.cbpa.2012.05.182] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2012] [Revised: 04/28/2012] [Accepted: 05/03/2012] [Indexed: 11/18/2022]
Abstract
Biorecognition-element labeled liposomes are simple and versatile tools used to amplify signals for the detection of analytes of environmental, clinical, food safety, and national security interest. Relying on measurement of encapsulated species via electrochemical or spectroscopic techniques, or properties inherent to liposomes themselves (such as mass, refractive index, or charge), many advances have been made in both bench-scale and microfluidic applications. Some of these measurement techniques are inherently sensitivity limited, but through the inclusion of liposomes, reduced limits of detection potentially broaden the utility towards otherwise challenging levels of analytes. Other advances took advantage of the hydrophobic environment required by many biorecognition elements to expand the target selectivity range or utilized the amphipathic nature of the lipid bilayer to provide enhanced separation capabilities. Novel handling approaches included wavelength-specific release of contents encapsulated within thermosensitive liposomes or application of electric fields to move, concentrate, and strategically lyse liposomes. These and other topics are discussed in terms of either present incorporation or adaptation to microfluidic devices.
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Affiliation(s)
- Katie A Edwards
- Cornell University, Department of Biological and Environmental Engineering, Ithaca, NY 14853, United States
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Pinheiro M, Lúcio M, Lima JLFC, Reis S. Liposomes as drug delivery systems for the treatment of TB. Nanomedicine (Lond) 2012; 6:1413-28. [PMID: 22026379 DOI: 10.2217/nnm.11.122] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
TB is an infectious disease that is far from being eradicated and controlled. The treatment for TB is associated with noncompliance to therapy because it consists of a long-term treatment with a multidrug combination and is associated with the appearance of several side effects. Liposomal formulations are being developed with first- and second-line antibiotics, and might be an extremely useful alternative to current therapies. This article will thus focus on the role of liposomes as nanodelivery systems for the treatment of TB. Among several advantages, these nanocarriers allow an increase in the bioavailability of antibiotics, which may lead to a reduction in the time of treatment. Results obtained with such nanosystems, although preliminary, are promising and are perspective of the use of inhalation for TB treatment.
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Affiliation(s)
- Marina Pinheiro
- REQUIMTE, Departamento de Química, Faculdade de Farmácia, Universidade do Porto Rua Aníbal Cunha, 164, 4099-030 Porto, Portugal
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Hsieh YF, Huang BY, Liu CP, Liu CY. NaDDBS as a dispersion agent for multiwalled carbon nanotubes in capillary EKC separation of nucleotides. Electrophoresis 2012; 31:3288-95. [PMID: 22216447 DOI: 10.1002/elps.201000056] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
A novel pseudostationary phase (PSP) of multiwalled carbon nanotubes (MWCNTs) dispersed with sodium dodecylbenzenesulfonate (NaDDBS) was used for the EKC separation of nucleotides. NaDDBS has a long hydrophobic chain and a benzylsulfonate group. It suspends more MWCNTs (about 100-fold) than SDS, and the π-π interaction between the benzene ring of NaDDBS and MWCNTs prolongs the slurry suspension time. Using NaDDBS as a surfactant can reduce the required amount of MWCNTs and decrease the baseline noise. To produce a stable suspension, the optimum ratio (w/w) of MWCNTs to NaDDBS was investigated with turbidimetry. In this context, several parameters affecting EKC separation were studied, including buffer pH, composition, concentration, and the organic modifier. Use of NaDDBS (8 mg/L)/MWCNTs (0.8 mg/L) as the PSP in a phosphate buffer (30 mM, pH 8) yielded complete resolution of seven geometric isomers of a nucleoside monophosphate. In stacking mode, with 10% MeOH in the sample plug, the mixture of nucleoside mono-, di-, and tri-phosphates was satisfactorily separated in phosphate buffer (50 mM, pH 9). The results indicate that nucleotides with bases containing more electron-withdrawing groups interact more strongly with MWCNTs. The system has been used to separate oligonucleotides, and to analyze nucleotides in a complex matrix sample.
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Affiliation(s)
- Yu-Fang Hsieh
- Department of Chemistry, National Taiwan University, Taipei, Taiwan
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21
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Xiong B, Wang W, Miao X, Liu L, Wang L, Zhou X, Hu J. Simultaneous laser-induced fluorescence, coaxial thermal lens spectroscopy and retro-reflected beam interference detection for capillary electrophoresis. Talanta 2012; 88:168-74. [DOI: 10.1016/j.talanta.2011.10.027] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2011] [Revised: 10/18/2011] [Accepted: 10/22/2011] [Indexed: 11/29/2022]
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Pignatello R, Musumeci T, Basile L, Carbone C, Puglisi G. Biomembrane models and drug-biomembrane interaction studies: Involvement in drug design and development. J Pharm Bioallied Sci 2011; 3:4-14. [PMID: 21430952 PMCID: PMC3053521 DOI: 10.4103/0975-7406.76461] [Citation(s) in RCA: 92] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2010] [Revised: 09/18/2010] [Accepted: 12/11/2010] [Indexed: 12/19/2022] Open
Abstract
Contact with many different biological membranes goes along the destiny of a drug after its systemic administration. From the circulating macrophage cells to the vessel endothelium, to more complex absorption barriers, the interaction of a biomolecule with these membranes largely affects its rate and time of biodistribution in the body and at the target sites. Therefore, investigating the phenomena occurring on the cell membranes, as well as their different interaction with drugs in the physiological or pathological conditions, is important to exploit the molecular basis of many diseases and to identify new potential therapeutic strategies. Of course, the complexity of the structure and functions of biological and cell membranes, has pushed researchers toward the proposition and validation of simpler two- and three-dimensional membrane models, whose utility and drawbacks will be discussed. This review also describes the analytical methods used to look at the interactions among bioactive compounds with biological membrane models, with a particular accent on the calorimetric techniques. These studies can be considered as a powerful tool for medicinal chemistry and pharmaceutical technology, in the steps of designing new drugs and optimizing the activity and safety profile of compounds already used in the therapy.
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Affiliation(s)
- R Pignatello
- Department of Drug Sciences, University of Catania, viale A. Doria, 6 - 95125 Catania, Italy
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23
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González-Rodríguez ML, Rabasco AM. Charged liposomes as carriers to enhance the permeation through the skin. Expert Opin Drug Deliv 2011; 8:857-71. [DOI: 10.1517/17425247.2011.574610] [Citation(s) in RCA: 62] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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24
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Franzen U, Nguyen TT, Vermehren C, Gammelgaard B, Østergaard J. Characterization of a liposome-based formulation of oxaliplatin using capillary electrophoresis: Encapsulation and leakage. J Pharm Biomed Anal 2011; 55:16-22. [DOI: 10.1016/j.jpba.2010.12.037] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2010] [Revised: 12/20/2010] [Accepted: 12/26/2010] [Indexed: 11/16/2022]
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25
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Franzen U, Vermehren C, Jensen H, Østergaard J. Physicochemical characterization of a PEGylated liposomal drug formulation using capillary electrophoresis. Electrophoresis 2011; 32:738-48. [PMID: 21365657 DOI: 10.1002/elps.201000552] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2010] [Revised: 12/21/2010] [Accepted: 12/27/2010] [Indexed: 11/12/2022]
Abstract
In this work, the applicability of using CE to perform a physicochemical characterization of a PEGylated liposomal drug formulation of the anti-cancer agent oxaliplatin was examined. Characterization of the liposomal drug formulation using CE instrumentation encompassed: determination of the electrophoretic mobilities, size determination by Taylor dispersion analysis and interaction studies. Electrophoretic mobilities determined by CE were compared with the results obtained by laser Doppler electrophoresis, which were found to be subject to larger variation. Average hydrodynamic diameters of the liposome preparations, as determined by Taylor dispersion analysis, were in the range of 61-84 nm and were compared with the results obtained by dynamic light scattering. Interactions between oxaliplatin (and paracetamol) and the PEGylated liposome were non-detectable by CE frontal analysis as well as by liposome electrokinetic chromatography. In contrast, for the more lipophilic compound propranolol, apparent liposome-aqueous phase distribution coefficients (D(lip) ) were successfully determined by both electrokinetic chromatography (log D(lip) =2.10) and by CE frontal analysis (log D(lip) =2.14). It is envisioned that CE and capillary-based techniques, including Taylor dispersion analysis, will be useful tools for the characterization of nanoparticulate (e.g. liposomal) drug formulations.
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Affiliation(s)
- Ulrik Franzen
- Department of Pharmaceutics and Analytical Chemistry, Faculty of Pharmaceutical Sciences, University of Copenhagen, Copenhagen, Denmark
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26
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Synthetic membranes (vesicles) in inorganic ion analysis: A review. Anal Chim Acta 2011; 683:156-69. [DOI: 10.1016/j.aca.2010.10.024] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2010] [Revised: 10/14/2010] [Accepted: 10/15/2010] [Indexed: 11/22/2022]
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Hadorn M, Eggenberger Hotz P. Encapsulated Multi-vesicle Assemblies of Programmable Architecture: Towards Personalized Healthcare. BIOMEDICAL ENGINEERING SYSTEMS AND TECHNOLOGIES 2011. [DOI: 10.1007/978-3-642-18472-7_11] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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28
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Zhou Q, Wang H, Gao T, Yu Y, Ling B, Mao L, Zhang H, Meng X, Zhou X. Supramolecular vesicle: triggered by formation of pseudorotaxane between cucurbit[6]uril and surfactant. Chem Commun (Camb) 2011; 47:11315-7. [DOI: 10.1039/c1cc11359c] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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29
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El Deeb S, Iriban MA, Gust R. MEKC as a powerful growing analytical technique. Electrophoresis 2010; 32:166-83. [PMID: 21171121 DOI: 10.1002/elps.201000398] [Citation(s) in RCA: 83] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2010] [Revised: 09/30/2010] [Accepted: 09/30/2010] [Indexed: 11/11/2022]
Abstract
This review summarizes the principle and the developments in MEKC in terms of separation power, sensitivity, and detection approaches more than 25 years after its appearance. Newly used surfactants are mentioned. Classical and new sample concentration techniques in MEKC are described. The different detection approaches in MEKC with advantages, limitations, and future prospects are also discussed. This review highlights the wider application of MEKC in different analytical fields. Various recent selected applications of this technique in different analytical fields are reported.
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Affiliation(s)
- Sami El Deeb
- Institute of Pharmacy, Freie Universität Berlin, Berlin, Germany
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30
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Mei J, Tian YP, He W, Xiao YX, Wei J, Feng YQ. Preparation approaches of the coated capillaries with liposomes in capillary electrophoresis. J Chromatogr A 2010; 1217:6979-86. [DOI: 10.1016/j.chroma.2010.08.062] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2009] [Revised: 08/21/2010] [Accepted: 08/24/2010] [Indexed: 11/28/2022]
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31
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Lokajová J, Laine J, Puukilainen E, Ritala M, Holopainen JM, Wiedmer SK. Liposomes for entrapping local anesthetics: a liposome electrokinetic chromatographic study. Electrophoresis 2010; 31:1540-9. [PMID: 20358540 DOI: 10.1002/elps.200900562] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Bupivacaine is a lipophilic, long-acting, amide class local anesthetic commonly used in clinical practice to provide local anesthesia during surgical procedures. Several cases of accidental overdose with cardiac arrest and death have been reported since bupivacaine was introduced to human use. Recent case reports have suggested that Intralipid (Fresenius Kabi) is an effective therapy for cardiac toxicity from high systemic concentrations of, e.g. bupivacaine, even though the mechanism behind the interaction is not fully clear yet. Our long-term aim is to develop a sensitive, efficient, and non-harmful lipid-based formulation to specifically trap harmful substances in vivo. In this study, the in vitro interaction of local anesthetics (bupivacaine, prilocaine, and lidocaine) with Intralipid or lipid vesicles containing phosphatidylglycerol, phosphatidylcholine, cardiolipin, cholesterol, and N-palmitoyl-D-erythro-sphingosine (ceramide) was determined by liposome electrokinetic chromatography. The interactions were evaluated by calculating the retention factors and distribution constants. Atomic force microscopy measurements were carried out to confirm that the interaction mechanism was solely due to interactions between the analytes and the moving pseudostationary phase and not by interactions with a stationary lipid phase adsorbed to the fused-silica wall. The heterogeneity of the liposomes was also studied by atomic force microscopy. The liposome electrokinetic chromatography results demonstrate that there is higher interaction between the drugs and negatively charged liposome dispersion than with the commercial Intralipid dispersion.
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Affiliation(s)
- Jana Lokajová
- Laboratory of Analytical Chemistry, Department of Chemistry, University of Helsinki, Finland
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32
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Chen SB. Electrophoretic mobility of a spherical liposome. J Colloid Interface Sci 2010; 348:177-82. [DOI: 10.1016/j.jcis.2010.04.024] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2010] [Revised: 04/09/2010] [Accepted: 04/10/2010] [Indexed: 11/29/2022]
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33
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Moeller EH, Holst B, Nielsen LH, Pedersen PS, Østergaard J. Stability, liposome interaction, and in vivo pharmacology of ghrelin in liposomal suspensions. Int J Pharm 2010; 390:13-8. [DOI: 10.1016/j.ijpharm.2009.05.067] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2009] [Revised: 05/26/2009] [Accepted: 05/29/2009] [Indexed: 10/20/2022]
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34
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Hadorn M, Eggenberger Hotz P. DNA-mediated self-assembly of artificial vesicles. PLoS One 2010; 5:e9886. [PMID: 20360854 PMCID: PMC2845621 DOI: 10.1371/journal.pone.0009886] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2009] [Accepted: 03/04/2010] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND Although multicompartment systems made of single unilamellar vesicles offer the potential to outperform single compartment systems widely used in analytic, synthetic, and medical applications, their use has remained marginal to date. On the one hand, this can be attributed to the binary character of the majority of the current tethering protocols that impedes the implementation of real multicomponent or multifunctional systems. On the other hand, the few tethering protocols theoretically providing multicompartment systems composed of several distinct vesicle populations suffer from the readjustment of the vesicle formation procedure as well as from the loss of specificity of the linking mechanism over time. METHODOLOGY/PRINCIPAL FINDINGS In previous studies, we presented implementations of multicompartment systems and resolved the readjustment of the vesicle formation procedure as well as the loss of specificity by using linkers consisting of biotinylated DNA single strands that were anchored to phospholipid-grafted biotinylated PEG tethers via streptavidin as a connector. The systematic analysis presented herein provides evidences for the incorporation of phospholipid-grafted biotinylated PEG tethers to the vesicle membrane during vesicle formation, providing specific anchoring sites for the streptavidin loading of the vesicle membrane. Furthermore, DNA-mediated vesicle-vesicle self-assembly was found to be sequence-dependent and to depend on the presence of monovalent salts. CONCLUSIONS/SIGNIFICANCE This study provides a solid basis for the implementation of multi-vesicle assemblies that may affect at least three distinct domains. (i) Analysis. Starting with a minimal system, the complexity of a bottom-up system is increased gradually facilitating the understanding of the components and their interaction. (ii) Synthesis. Consecutive reactions may be implemented in networks of vesicles that outperform current single compartment bioreactors in versatility and productivity. (iii) Personalized medicine. Transport and targeting of long-lived, pharmacologically inert prodrugs and their conversion to short-lived, active drug molecules directly at the site of action may be accomplished if multi-vesicle assemblies of predefined architecture are used.
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Affiliation(s)
- Maik Hadorn
- Artificial Intelligence Laboratory, Department of Informatics, University of Zurich, Zurich, Switzerland.
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35
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Østergaard J, Moeller EH. Ghrelin-liposome interactions: Characterization of liposomal formulations of an acylated 28-amino acid peptide using CE. Electrophoresis 2010; 31:339-45. [DOI: 10.1002/elps.200900394] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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36
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Silva M. Micellar electrokinetic chromatography: Methodological and instrumental advances focused on practical aspects. Electrophoresis 2009; 30:50-64. [DOI: 10.1002/elps.200800414] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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37
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Lee EY, Choi DS, Kim KP, Gho YS. Proteomics in gram-negative bacterial outer membrane vesicles. MASS SPECTROMETRY REVIEWS 2008; 27:535-555. [PMID: 18421767 DOI: 10.1002/mas.20175] [Citation(s) in RCA: 223] [Impact Index Per Article: 13.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Gram-negative bacteria constitutively secrete outer membrane vesicles (OMVs) into the extracellular milieu. Recent research in this area has revealed that OMVs may act as intercellular communicasomes in polyspecies communities by enhancing bacterial survival and pathogenesis in hosts. However, the mechanisms of vesicle formation and the pathophysiological roles of OMVs have not been clearly defined. While it is obvious that mass spectrometry-based proteomics offers great opportunities for improving our knowledge of bacterial OMVs, limited proteomic data are available for OMVs. The present review aims to give an overview of the previous biochemical, biological, and proteomic studies in the emerging field of bacterial OMVs, and to give future directions for high-throughput and comparative proteomic studies of OMVs that originate from diverse Gram-negative bacteria under various environmental conditions. This article will hopefully stimulate further efforts to construct a comprehensive proteome database of bacterial OMVs that will help us not only to elucidate the biogenesis and functions of OMVs but also to develop diagnostic tools, vaccines, and antibiotics effective against pathogenic bacteria.
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Affiliation(s)
- Eun-Young Lee
- Department of Life Science and Division of Molecular and Life Sciences, Pohang University of Science and Technology, Pohang, Republic of Korea
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38
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Xiong B, Wang W, Miao X, Zhou X, Deng Y, Zhou P, Hu J. Simultaneous LIF and retro-reflected beam interference detection for CE. Electrophoresis 2008; 29:4482-6. [DOI: 10.1002/elps.200800292] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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39
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Wiedmer SK, Kulovesi P, Riekkola ML. Liposome electrokinetic capillary chromatography in the study of analyte-phospholipid membrane interactions. Application to pesticides and related compounds. J Sep Sci 2008; 31:2714-21. [DOI: 10.1002/jssc.200800239] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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40
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Østergaard J, Jorgensen L, Engelbrecht Thomsen A, Weng Larsen S, Larsen C, Jensen H. Drug-liposome distribution phenomena studied by capillary electrophoresis-frontal analysis. Electrophoresis 2008; 29:3320-4. [DOI: 10.1002/elps.200700757] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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41
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Kostal V, Arriaga EA. Recent advances in the analysis of biological particles by capillary electrophoresis. Electrophoresis 2008; 29:2578-86. [PMID: 18576409 PMCID: PMC3037010 DOI: 10.1002/elps.200700917] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
This review covers research papers published in the years 2005-2007 that describe the application of capillary electrophoresis to the analysis of biological particles such as whole cells, subcellular organelles, viruses and microorganisms.
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Affiliation(s)
- Vratislav Kostal
- Department of Chemistry, University of Minnesota, Minneapolis, MN, USA
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42
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XIAN DL, HUANG KL, LIU SQ, XIAO JY. Quantitative Retention-Activity Relationship Studies by Liposome Electrokinetic Chromatography to Predict Skin Permeability. CHINESE J CHEM 2008. [DOI: 10.1002/cjoc.200890127] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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43
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Foley JP, Hong M, Polinko MA, Pascoe RJ, Ahuja ES. Compositional effects on electrophoretic and chromatographic figures of merit in electrokinetic chromatography with cetyltrimethylammonium bromide/sodium octyl sulfate vesicles as the pseudostationary phase. Part 1: Effect of the phase ratio. Electrophoresis 2008; 29:1180-8. [DOI: 10.1002/elps.200700809] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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44
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Wiedmer SK, Bo T, Riekkola ML. Phospholipid–protein coatings for chiral capillary electrochromatography. Anal Biochem 2008; 373:26-33. [DOI: 10.1016/j.ab.2007.08.033] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2007] [Revised: 08/25/2007] [Accepted: 08/28/2007] [Indexed: 10/22/2022]
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45
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Xian D, Huang K, Liu S, Xiao J. Liposome Electrokinetic Chromatography: An in vitro Approach for Predicting Ecotoxicity. Chromatographia 2008. [DOI: 10.1365/s10337-008-0538-1] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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46
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Jesorka A, Orwar O. Liposomes: technologies and analytical applications. ANNUAL REVIEW OF ANALYTICAL CHEMISTRY (PALO ALTO, CALIF.) 2008; 1:801-32. [PMID: 20636098 DOI: 10.1146/annurev.anchem.1.031207.112747] [Citation(s) in RCA: 335] [Impact Index Per Article: 20.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Liposomes are structurally and functionally some of the most versatile supramolecular assemblies in existence. Since the beginning of active research on lipid vesicles in 1965, the field has progressed enormously and applications are well established in several areas, such as drug and gene delivery. In the analytical sciences, liposomes serve a dual purpose: Either they are analytes, typically in quality-assessment procedures of liposome preparations, or they are functional components in a variety of new analytical systems. Liposome immunoassays, for example, benefit greatly from the amplification provided by encapsulated markers, and nanotube-interconnected liposome networks have emerged as ultrasmall-scale analytical devices. This review provides information about new developments in some of the most actively researched liposome-related topics.
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Affiliation(s)
- Aldo Jesorka
- Department of Chemical and Biological Engineering, Chalmers University of Technology, Göteborg, Sweden.
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47
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Kahle KA, Foley JP. Review of aqueous chiral electrokinetic chromatography (EKC) with an emphasis on chiral microemulsion EKC. Electrophoresis 2007; 28:2503-26. [PMID: 17657766 DOI: 10.1002/elps.200600808] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
The separation of enantiomers using electrokinetic chromatography (EKC) with chiral microemulsions is comprehensively reviewed through December 1, 2006. Aqueous chiral EKC separations based on other pseudostationary phases such as micelles and vesicles or on other chiral selectors such as CDs, crown ethers, glycopeptides, ligand exchange moeities are also reviewed from both mechanistic and applications perspective for the period of January 2005 to December 1, 2006.
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Affiliation(s)
- Kimberly A Kahle
- Department of Chemistry, Drexel University, Philadelphia, PA 19104, USA
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48
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Hautala JT, Riekkola ML, Wiedmer SK. Anionic phospholipid coatings in capillary electrochromatography. J Chromatogr A 2007; 1150:339-47. [PMID: 16945379 DOI: 10.1016/j.chroma.2006.08.025] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2006] [Revised: 08/02/2006] [Accepted: 08/11/2006] [Indexed: 11/19/2022]
Abstract
Anionic phospholipids phosphatidic acid (PA), phosphatidylglycerol (PG), phosphatidylinositol (PI), and phosphatidylserine (PS) were examined for their effect on 1-palmitoyl-2-oleyl-sn-glycero-3-phosphatidylcholine (POPC)-containing liposomes used as coating material in capillary electrochromatography. Liposome solvent was N-(2-hydroxyethyl)piperazine-N'-(2-ethanesulfonic acid) (HEPES) buffer at pH 7.4 with and without 3 mM of CaCl2. The background electrolyte solution was HEPES buffer at pH 7.4. The net charge, size, and short-term stability of the liposomes were measured with a Zetasizer. Results showed that calcium interacts with all liposomes but most strongly with POPC/PA. The relative migration times, retention factors, and resolution of the model analytes (one cationic, three uncharged ions, and one anionic) were studied. All liposomes successfully coated the silica capillary. Without calcium the strongest interaction and best separation of the analytes were with the POPC/PI and POPC/PS coatings, while interactions with the POPC/PA coating were weak. Calcium enhanced the interactions of the model analytes with all coatings, and the interactions were then strongest with the POPC/PA coating. In the presence of calcium there appears to be a slight reorganization of the coating with increasing number of runs. Our results indicate strong interactions between calcium and the phosphate groups in phospholipids and demonstrate the significant role of the phospholipid polar head group in phospholipid coatings on silica surfaces.
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Affiliation(s)
- Jari T Hautala
- Laboratory of Analytical Chemistry, Department of Chemistry, P.O. Box 55, FIN-00014 University of Helsinki, Helsinki, Finland
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49
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Bonoli M, Varjo SJO, Wiedmer SK, Riekkola ML. Cationic lipid vesicles as coating precursors in capillary electrochromatography: Separation of basic proteins and neutral steroids. J Chromatogr A 2006; 1119:163-9. [PMID: 16458905 DOI: 10.1016/j.chroma.2005.12.045] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2005] [Revised: 12/01/2005] [Accepted: 12/08/2005] [Indexed: 11/19/2022]
Abstract
1,2-Dioleyl-3-trymethylammoniumpropane (DOTAP) lipid vesicles were employed as coating precursors to obtain a semipermanent cationic lipid bilayer in silica capillary. The coating procedure was relatively fast and simple. Reliable results for the separation of four basic proteins (alpha-chymotrypsinogen A, ribonuclease A, cytochrome C, lysozyme) were obtained by using an acetate buffer under acidic conditions. The RSDs of the migration times were not higher than 0.5% run-to-run and about 1% day-to-day (3 days), while the RSDs of the peak areas were within 7% day-to-day (3 days). The day-to-day RSD of the EOF mobility of about 1%, confirmed that the DOTAP coating was stable for the separation of basic proteins, under acidic buffers. In addition to basic proteins the DOTAP coating was found suitable under acidic conditions for the repeatable separation of neutral steroids. The potential of DOTAP as a carrier in background electrolyte solution was studied.
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Affiliation(s)
- Matteo Bonoli
- Laboratory of Analytical Chemistry, Department of Chemistry, University of Helsinki, Finland
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Bilek G, Kremser L, Blaas D, Kenndler E. Analysis of liposomes by capillary electrophoresis and their use as carrier in electrokinetic chromatography. J Chromatogr B Analyt Technol Biomed Life Sci 2006; 841:38-51. [PMID: 16682264 DOI: 10.1016/j.jchromb.2006.03.031] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2006] [Revised: 03/07/2006] [Accepted: 03/15/2006] [Indexed: 11/21/2022]
Abstract
This contribution reviews work about liposomes in the context of electrically driven separation methods in the capillary format. The discussion covers four topics. The one broaches the application of liposomes as pseudo-stationary phases or carriers in vesicle or liposome electrokinetic chromatography (EKC) in the way as microemulsions and micelles are used; it includes the chromatographic use of liposomal bilayers as stationary phases attached to the wall for capillary electrochromatography (CEC). The second topic is the characterization and separation of liposomes as analytes by capillary electrophoresis (CE). Then the determination of distribution coefficients and binding constants between liposomes and ligands is discussed, and finally work dealing with peptides and proteins are reviewed with lipid bilayers as constituents of the electrically driven separation system.
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Affiliation(s)
- Gerhard Bilek
- Institute for Analytical Chemistry, University of Vienna, Währingerstrasse 38, A-1090 Vienna, Austria
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