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Gonçalves RA, Holmberg K, Lindman B. Cationic surfactants: A review. J Mol Liq 2023. [DOI: 10.1016/j.molliq.2023.121335] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
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2
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Dilip H, Chakraborty D. Structural and dynamical properties of water in surfactant-like peptide-based nanotubes: Effect of pore size, tube length and charge. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2020.115033] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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3
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Oliveira IS, Silva JP, Araújo MJ, Gomes AC, Marques EF. Biocompatible thermosensitive nanostructures and hydrogels of an amino acid-derived surfactant and hydroxyethyl cellulose polymers. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2020.114540] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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4
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Garcia MT, Ribosa I, Gonzalez JJ, Comelles F. Catanionic mixtures of surface-active ionic liquids and N-lauroyl sarcosinate: Surface adsorption, aggregation behavior and microbial toxicity. J Mol Liq 2020. [DOI: 10.1016/j.molliq.2020.114040] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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5
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Ajdnik U, Finšgar M, Fras Zemljič L. Characterization of chitosan-lysine surfactant bioactive coating on silicone substrate. Carbohydr Polym 2020; 232:115817. [PMID: 31952614 DOI: 10.1016/j.carbpol.2019.115817] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2019] [Revised: 12/23/2019] [Accepted: 12/30/2019] [Indexed: 12/22/2022]
Abstract
Chitosan (Chi) and anionic surfactant derived from lysine (77KS) were used to prepare a novel bioactive coating and as a drug delivery system for amoxicillin (AMOX) on a model polydimethylsiloxane (PDMS) surface. The bioactive coating was formulated as polyelectrolyte-surfactant complex (PESC). Aggregation behaviour between the cationic Chi and oppositely charged 77KS in bulk was analysed using turbidity and ζ-potential measurement. Furthermore, the adsorption and stability of the formulations were evaluated using quartz crystal microbalance with dissipation (QCM-D). The effect of the ionic strength and of the ultraviolet/ozone (UVO) activation of the PDMS films on the adsorption behaviour of the PESC complex was also examined. QCM-D monitoring showed stable adsorption of bare and AMOX-loaded complex on non-activated PDMS films, while the coating on UVO-activated PDMS samples desorbed after the rinsing step. Finally, X-ray photoelectron spectroscopy and time-of-flight secondary ion mass spectrometry confirmed successful and homogenously distributed compounds.
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Affiliation(s)
- Urban Ajdnik
- University of Maribor, Faculty of Mechanical Engineering, Institute for Engineering Materials and Design, Smetanova ulica 17, 2000 Maribor, Slovenia.
| | - Matjaž Finšgar
- University of Maribor, Faculty of Chemistry and Chemical Engineering, Smetanova ulica 17, 2000 Maribor, Slovenia.
| | - Lidija Fras Zemljič
- University of Maribor, Faculty of Mechanical Engineering, Institute for Engineering Materials and Design, Smetanova ulica 17, 2000 Maribor, Slovenia.
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6
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Ceriotti L, Balzaretti S, Barone S, Meloni M. Eye Irritation Potential of Microglycine and Microglycine-Containing Ointments: An in vitro Study on Reconstructed Human Corneal Epithelium. Clin Ophthalmol 2020; 14:257-267. [PMID: 32158183 PMCID: PMC6986405 DOI: 10.2147/opth.s229879] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2019] [Accepted: 12/19/2019] [Indexed: 12/19/2022] Open
Abstract
Objective To assess the eye tolerability of a buffered ophthalmic solution containing microglycine (sodium hydroxymethylglycinate, mwaterTM) in an in vitro model. Materials and Methods A multiple endpoint analysis (MEA) approach was applied to the reconstructed human corneal epithelium (HCE) model. Sodium hydroxymethylglycinate solution (0.04%) and two ophthalmic ointments containing microglycine (Protectorial, containing 0.02% of sodium hydroxymethylglycinate, and Edenight, containing 0.04% of sodium hydroxymethylglycinate) were investigated. The buffered solution and the ointments were tested on HCE after acute (one application in 24 hrs, followed or not by 16 hrs of recovery) or repeated (one application per day for three consecutive days) exposures; benzalkonium chloride (BAK) 0.01% and saline isotonic solution were used as positive and negative controls, respectively. Cellular viability, trans-epithelial electrical resistance (TEER), lactate dehydrogenase (LDH) release and histo-morphology were evaluated. Results BAK 0.01% toxicity in HCE was confirmed for the 24+16 hrs acute and repeated exposure protocols, while, after 24–hours acute treatment, only modifications of the superficial cell layer were visible compared with the negative control. Sodium hydroxymethylglycinate had a very good tolerability profile and a neutral impact on the corneal surface after acute or repeated exposure. The Protectorial and Edenight ointments preserved cell viability in the different exposure protocols, suggesting a good local tolerability profile. Modifications of the superficial layers were observed on histo-morphological analysis and confirmed by increased release of LDH after 24+16 hrs acute exposure (+65% and +76% for Protectorial and Edenight, respectively) and TEER values after 24+16 hrs and 72 hrs exposure protocols. These results were dependent on the ointments’ accumulation on the corneal epithelium due to their physical form (semi-solid) and lipophilic properties. Conclusion Sodium hydroxymethylglycinate, alone or as part of eye ointments, was found to be non-toxic after acute or repeated exposure in the reconstructed HCE model.
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7
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Chen Z, Zhang P, Sun Y, Wang C, Xu B. Interfacial Dilational Rheology of Sodium Lauryl Glycine and Mixtures with Conventional Surfactants. J SURFACTANTS DETERG 2019. [DOI: 10.1002/jsde.12312] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Zhenghong Chen
- School of Food and Chemical EngineeringBeijing Technology and Business University Beijing 100048 P. R. China
| | - Pingping Zhang
- School of Food and Chemical EngineeringBeijing Technology and Business University Beijing 100048 P. R. China
| | - Yimeng Sun
- School of Food and Chemical EngineeringBeijing Technology and Business University Beijing 100048 P. R. China
| | - Ce Wang
- School of Food and Chemical EngineeringBeijing Technology and Business University Beijing 100048 P. R. China
| | - Baocai Xu
- School of Food and Chemical EngineeringBeijing Technology and Business University Beijing 100048 P. R. China
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8
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Macedo LB, Nogueira-Librelotto DR, de Vargas J, Scheeren LE, Vinardell MP, Rolim CMB. Poly (ɛ-Caprolactone) Nanoparticles with pH-Responsive Behavior Improved the In Vitro Antitumor Activity of Methotrexate. AAPS PharmSciTech 2019; 20:165. [PMID: 30993464 DOI: 10.1208/s12249-019-1372-5] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2019] [Accepted: 03/19/2019] [Indexed: 01/08/2023] Open
Abstract
A promising approach to achieve a more efficient antitumor therapy is the conjugation of the active molecule to a nanostructured delivery system. Therefore, the main objective of this research was to prepare nanoparticles (NPs), with the polymer poly (ε-caprolactone) (PCL), as a carrier for the antitumor drug methotrexate (MTX). A pH-responsive behavior was obtained through conjugation of the amino acid-based amphiphile, 77KL, to the NP matrix. The NPs showed mean hydrodynamic diameter and drug entrapment efficiency of 178.5 nm and 20.52%, respectively. Owing to its pH-sensitivity, the PCL-NPs showed membrane-lytic behavior upon reducing the pH value of surrounding media to 5.4, which is characteristic of the endosomal compartments. The in vitro antitumor assays demonstrated that MTX-loaded PCL-NPs have higher antiproliferative activity than free drug in MCF-7 cells and, to a lesser extent, in HepG2 cells. This same behavior was also achieved at mildly acidic conditions, characteristic of the tumor microenvironment. Altogether, the results evidenced the pH-responsive properties of the designed NPs, as well as the higher in vitro cytotoxicity compared to free MTX, representing thus a promising alternative for the antitumor therapy.
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9
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Shi TT, Fang Z, Zeng WB, Yang Z, He W, Guo K. Design, synthesis and properties investigation of Nα-acylation lysine based derivatives. RSC Adv 2019; 9:7587-7593. [PMID: 35519941 PMCID: PMC9061198 DOI: 10.1039/c9ra00213h] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2019] [Accepted: 02/27/2019] [Indexed: 11/21/2022] Open
Abstract
Amino acid-based compounds have attracted attention as environmentally friendly bio-based materials. Our group has recently developed a novel family of Nα-acylation lysine based derivatives. We introduced long chain acyl groups at the Nα position selectively by a new synthetic route that avoided the process of amino protection and deprotection. Sodium Nα-octanamide lysine (C8), sodium Nα-capramide lysine (C10) and sodium Nα-lauramide lysine (C12) can self-assemble into vesicles spontaneously. As a result, not only do they have potential in drug delivery system but also they may be used as bio-based surfactants applied in cosmetics and other industries. A novel method has been developed for synthesizing Nα-acylation lysine based derivatives by introducing long chain acyl groups at the Nα position of lysine selectively.![]()
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Affiliation(s)
- Ting-Ting Shi
- College of Biotechnology and Pharmaceutical Engineering
- Nanjing Tech University
- Nanjing 211816
- P. R. China
- Department of Chemistry
| | - Zheng Fang
- College of Biotechnology and Pharmaceutical Engineering
- Nanjing Tech University
- Nanjing 211816
- P. R. China
| | - Wen-Bo Zeng
- College of Biotechnology and Pharmaceutical Engineering
- Nanjing Tech University
- Nanjing 211816
- P. R. China
| | - Zhao Yang
- School of Engineering
- China Pharmaceutical University
- Nanjing 211198
- China
| | - Wei He
- College of Biotechnology and Pharmaceutical Engineering
- Nanjing Tech University
- Nanjing 211816
- P. R. China
| | - Kai Guo
- College of Biotechnology and Pharmaceutical Engineering
- Nanjing Tech University
- Nanjing 211816
- P. R. China
- State Key Laboratory of Materials-Oriented Chemical Engineering
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10
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Scheeren LE, Nogueira-Librelotto DR, Fernandes JR, Macedo LB, Marcolino AIP, Vinardell MP, Rolim CMB. Comparative Study of Reversed-Phase High-Performance Liquid Chromatography and Ultraviolet–Visible Spectrophotometry to Determine Doxorubicin in pH-Sensitive Nanoparticles. ANAL LETT 2018. [DOI: 10.1080/00032719.2017.1380034] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Laís E. Scheeren
- Departamento de Farmácia Industrial, Universidade Federal de Santa Maria, Santa Maria, Rio Grande do Sul, Brazil
- Programa de Pós-Graduação em Ciências Farmacêuticas, Universidade Federal de Santa Maria, Santa Maria, Rio Grande do Sul, Brazil
| | - Daniele R. Nogueira-Librelotto
- Departamento de Farmácia Industrial, Universidade Federal de Santa Maria, Santa Maria, Rio Grande do Sul, Brazil
- Programa de Pós-Graduação em Ciências Farmacêuticas, Universidade Federal de Santa Maria, Santa Maria, Rio Grande do Sul, Brazil
| | - Joana R. Fernandes
- Departamento de Farmácia Industrial, Universidade Federal de Santa Maria, Santa Maria, Rio Grande do Sul, Brazil
| | - Letícia B. Macedo
- Departamento de Farmácia Industrial, Universidade Federal de Santa Maria, Santa Maria, Rio Grande do Sul, Brazil
- Programa de Pós-Graduação em Ciências Farmacêuticas, Universidade Federal de Santa Maria, Santa Maria, Rio Grande do Sul, Brazil
| | - Ana Isa P. Marcolino
- Departamento de Farmácia Industrial, Universidade Federal de Santa Maria, Santa Maria, Rio Grande do Sul, Brazil
- Programa de Pós-Graduação em Ciências Farmacêuticas, Universidade Federal de Santa Maria, Santa Maria, Rio Grande do Sul, Brazil
| | - M. Pilar Vinardell
- Departament de Bioquimica I Fisiologia, Facultat de Farmàcia I Ciències de l’Alimentació, Universitat de Barcelona, Barcelona, Spain
| | - Clarice M. B. Rolim
- Departamento de Farmácia Industrial, Universidade Federal de Santa Maria, Santa Maria, Rio Grande do Sul, Brazil
- Programa de Pós-Graduação em Ciências Farmacêuticas, Universidade Federal de Santa Maria, Santa Maria, Rio Grande do Sul, Brazil
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11
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Kokel A, Török B. Sustainable Production of Fine Chemicals and Materials Using Nontoxic Renewable Sources. Toxicol Sci 2018; 161:214-224. [PMID: 29045743 DOI: 10.1093/toxsci/kfx214] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
Due to declining hydrocarbon resources and strengthening environmental regulations, significant attention is directed toward sustainable and nontoxic supplies for the development of green technologies in a variety of industries. This account provides an overview on the sources and recent applications of such materials surveying the most common nontoxic and renewable resources that can be obtained from biological sources. Developing a broad array of technologies based on these materials would establish a truly sustainable green chemical industry. The study thematically discusses various compound groups, eg, carbohydrates, proteins, and triglycerides (oils). Since often the monomers or building blocks of these biopolymers are of significant importance and produced in large amounts, the applications of these compounds are also reviewed.
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Affiliation(s)
- Anne Kokel
- Department of Chemistry, University of Massachusetts Boston, Boston, Massachusetts 02125
| | - Béla Török
- Department of Chemistry, University of Massachusetts Boston, Boston, Massachusetts 02125
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12
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Gehlot P, Kulshrestha A, Bharmoria P, Damarla K, Chokshi K, Kumar A. Surface-Active Ionic Liquid Cholinium Dodecylbenzenesulfonate: Self-Assembling Behavior and Interaction with Cellulase. ACS OMEGA 2017; 2:7451-7460. [PMID: 31457311 PMCID: PMC6644741 DOI: 10.1021/acsomega.7b01291] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/02/2017] [Accepted: 10/17/2017] [Indexed: 06/10/2023]
Abstract
The conventional sodium dodecylbenzenesulfonate (NaDBS) has been converted into an efficient and nontoxic anionic surface-active ionic liquid, cholinium dodecylbenzenesulfonate (Cho[DBS]). We have investigated its self-assembling behavior, interaction with the enzyme cellulase, and ecotoxicity. The surface-active properties at the air-liquid interface and the aggregation behavior of Cho[DBS] in water have been determined using tensiometry, isothermal titration calorimetry (ITC), conductometry, and dynamic light scattering (DLS). The enzyme activity was observed using dinitro salicylic acid analysis. The enhanced enzyme activity was explained through active-site exfoliation and structural constancy of cellulase in the micellar medium using the results from fluorescence, circular dichroism, DLS, and ITC. The nontoxic nature was confirmed by toxicity analysis on the freshwater microalgae Scenedesmus sp.
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Affiliation(s)
- Praveen
Singh Gehlot
- Academy
of Scientific and Innovative Research (AcSIR), Salt and Marine
Chemicals Discipline, and Salt and Marine Chemicals Discipline, Central Salt and Marine Chemicals Research Institute, G. B. Marg, Bhavnagar 364002, Gujarat, India
| | - Akshay Kulshrestha
- Academy
of Scientific and Innovative Research (AcSIR), Salt and Marine
Chemicals Discipline, and Salt and Marine Chemicals Discipline, Central Salt and Marine Chemicals Research Institute, G. B. Marg, Bhavnagar 364002, Gujarat, India
| | - Pankaj Bharmoria
- Academy
of Scientific and Innovative Research (AcSIR), Salt and Marine
Chemicals Discipline, and Salt and Marine Chemicals Discipline, Central Salt and Marine Chemicals Research Institute, G. B. Marg, Bhavnagar 364002, Gujarat, India
| | - Krishnaiah Damarla
- Academy
of Scientific and Innovative Research (AcSIR), Salt and Marine
Chemicals Discipline, and Salt and Marine Chemicals Discipline, Central Salt and Marine Chemicals Research Institute, G. B. Marg, Bhavnagar 364002, Gujarat, India
| | - Kaumeel Chokshi
- Academy
of Scientific and Innovative Research (AcSIR), Salt and Marine
Chemicals Discipline, and Salt and Marine Chemicals Discipline, Central Salt and Marine Chemicals Research Institute, G. B. Marg, Bhavnagar 364002, Gujarat, India
| | - Arvind Kumar
- Academy
of Scientific and Innovative Research (AcSIR), Salt and Marine
Chemicals Discipline, and Salt and Marine Chemicals Discipline, Central Salt and Marine Chemicals Research Institute, G. B. Marg, Bhavnagar 364002, Gujarat, India
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13
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Raghavan V, Polavarapu PL. Specific optical rotation is a versatile tool for the identification of critical micelle concentration and micellar growth of tartaric acid-based diastereomeric amphiphiles. Chirality 2017; 29:836-846. [PMID: 28991388 DOI: 10.1002/chir.22767] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2017] [Revised: 08/14/2017] [Accepted: 08/29/2017] [Indexed: 11/09/2022]
Abstract
Four novel tartaric acid-based diastereomeric chiral amphiphiles, two being enantiomers of the other two, have been synthesized and investigated using chiroptical spectroscopic methods, along with tensiometry and dynamic light scattering experiments. We found that an inflection point in specific optical rotation (SOR) values at ~0.32 mM corresponds to the critical micelle concentration (CMC). The increase in magnitude of SOR values beyond CMC corresponds to the growth of aggregates. For enantiomers, oppositely signed SOR values were observed, ruling out the possibility for the presence of aggregation size mediated artefacts. SOR values did not exhibit concentration dependence for a chiral tartaric acid based non-aggregating analogue further establishing the absence of artefacts or anomalous interaction of tartaric acid based head group with solvent. Electronic circular dichroism spectra showed no significant changes in band positions or intensities with concentration. Due to the requirement for higher concentrations (~200 mM) needed to obtain vibrational circular dichroism spectra, these measurements are not found to be useful for studying concentration dependent properties of chiral amphiphiles.
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Affiliation(s)
- Vijay Raghavan
- Department of Chemistry, Vanderbilt University, Nashville, Tennessee, USA
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14
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Li X, Hu Y, Xu W, Li G, Song A, Hao J. Self-assembled structural transition in l-Arg/H-AOT mixtures driven by double hydrogen bonding. RSC Adv 2016. [DOI: 10.1039/c6ra07363h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The addition of H-AOT tol-Arg solution leads to the transition of the self-assembled structures, which is driven by the synergistic effect of the double hydrogen bonding, electrostatic interaction and hydrophobic effect.
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Affiliation(s)
- Xiaoyang Li
- Key Laboratory of Colloid and Interface Chemistry & Key Laboratory of Special Aggregated Materials
- Shandong University
- Ministry of Education
- Jinan 250100
- China
| | - Yuanyuan Hu
- Key Laboratory of Colloid and Interface Chemistry & Key Laboratory of Special Aggregated Materials
- Shandong University
- Ministry of Education
- Jinan 250100
- China
| | - Wenlong Xu
- Key Laboratory of Colloid and Interface Chemistry & Key Laboratory of Special Aggregated Materials
- Shandong University
- Ministry of Education
- Jinan 250100
- China
| | - Guihua Li
- Key Laboratory of Colloid and Interface Chemistry & Key Laboratory of Special Aggregated Materials
- Shandong University
- Ministry of Education
- Jinan 250100
- China
| | - Aixin Song
- Key Laboratory of Colloid and Interface Chemistry & Key Laboratory of Special Aggregated Materials
- Shandong University
- Ministry of Education
- Jinan 250100
- China
| | - Jingcheng Hao
- Key Laboratory of Colloid and Interface Chemistry & Key Laboratory of Special Aggregated Materials
- Shandong University
- Ministry of Education
- Jinan 250100
- China
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15
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Li G, Yang Q, Song A, Hao J. Self-assembled structural transition from vesicle phase to sponge phase and emulsifying properties in mixtures of arginine and fatty acids. Colloids Surf A Physicochem Eng Asp 2015. [DOI: 10.1016/j.colsurfa.2015.09.071] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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16
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PEGylated and poloxamer-modified chitosan nanoparticles incorporating a lysine-based surfactant for pH-triggered doxorubicin release. Colloids Surf B Biointerfaces 2015; 138:117-27. [PMID: 26674840 DOI: 10.1016/j.colsurfb.2015.11.049] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2015] [Revised: 11/24/2015] [Accepted: 11/25/2015] [Indexed: 12/29/2022]
Abstract
The growing demand for efficient chemotherapy in many cancers requires novel approaches in target-delivery technologies. Nanomaterials with pH-responsive behavior appear to have potential ability to selectively release the encapsulated molecules by sensing the acidic tumor microenvironment or the low pH found in endosomes. Likewise, polyethylene glycol (PEG)- and poloxamer-modified nanocarriers have been gaining attention regarding their potential to improve the effectiveness of cancer therapy. In this context, DOX-loaded pH-responsive nanoparticles (NPs) modified with PEG or poloxamer were prepared and the effects of these modifiers were evaluated on the overall characteristics of these nanostructures. Chitosan and tripolyphosphate were selected to form NPs by the interaction of oppositely charged compounds. A pH-sensitive lysine-based amphiphile (77KS) was used as a bioactive adjuvant. The strong dependence of 77KS ionization with pH makes this compound an interesting candidate to be used for the design of pH-sensitive devices. The physicochemical characterization of all NPs has been performed, and it was shown that the presence of 77KS clearly promotes a pH-triggered DOX release. Accelerated and continuous release patterns of DOX from CS-NPs under acidic conditions were observed regardless of the presence of PEG or poloxamer. Moreover, photodegradation studies have indicated that the lyophilization of NPs improved DOX stability under UVA radiation. Finally, cytotoxicity experiments have shown the ability of DOX-loaded CS-NPs to kill HeLa tumor cells. Hence, the overall results suggest that these pH-responsive CS-NPs are highly potent delivery systems to target tumor and intracellular environments, rendering them promising DOX carrier systems for cancer therapy.
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17
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Nogueira DR, Scheeren LE, Macedo LB, Marcolino AIP, Pilar Vinardell M, Mitjans M, Rosa Infante M, Farooqi AA, Rolim CMB. Inclusion of a pH-responsive amino acid-based amphiphile in methotrexate-loaded chitosan nanoparticles as a delivery strategy in cancer therapy. Amino Acids 2015; 48:157-68. [PMID: 26306845 DOI: 10.1007/s00726-015-2075-1] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2015] [Accepted: 08/13/2015] [Indexed: 12/13/2022]
Abstract
The encapsulation of antitumor drugs in nanosized systems with pH-sensitive behavior is a promising approach that may enhance the success of chemotherapy in many cancers. The nanocarrier dependence on pH might trigger an efficient delivery of the encapsulated drug both in the acidic extracellular environment of tumors and, especially, in the intracellular compartments through disruption of endosomal membrane. In this context, here we reported the preparation of chitosan-based nanoparticles encapsulating methotrexate as a model drug (MTX-CS-NPs), which comprises the incorporation of an amino acid-based amphiphile with pH-responsive properties (77KS) on the ionotropic complexation process. The presence of 77KS clearly gives a pH-sensitive behavior to NPs, which allowed accelerated release of MTX with decreasing pH as well as pH-dependent membrane-lytic activity. This latter performance demonstrates the potential of these NPs to facilitate cytosolic delivery of endocytosed materials. Outstandingly, the cytotoxicity of MTX-loaded CS-NPs was higher than free drug to MCF-7 tumor cells and, to a lesser extent, to HeLa cells. Based on the overall results, MTX-CS-NPs modified with the pH-sensitive surfactant 77KS could be potentially useful as a carrier system for intracellular drug delivery and, thus, a promising targeting anticancer chemotherapeutic agent.
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Affiliation(s)
- Daniele Rubert Nogueira
- Departamento de Farmácia Industrial, Universidade Federal de Santa Maria, Av. Roraima 1000, Santa Maria, RS, 97105-900, Brazil. .,Programa de Pós-Graduação em Ciências Farmacêuticas, Universidade Federal de Santa Maria, Av. Roraima 1000, Santa Maria, RS, 97105-900, Brazil.
| | - Laís E Scheeren
- Departamento de Farmácia Industrial, Universidade Federal de Santa Maria, Av. Roraima 1000, Santa Maria, RS, 97105-900, Brazil.,Programa de Pós-Graduação em Ciências Farmacêuticas, Universidade Federal de Santa Maria, Av. Roraima 1000, Santa Maria, RS, 97105-900, Brazil
| | - Letícia B Macedo
- Departamento de Farmácia Industrial, Universidade Federal de Santa Maria, Av. Roraima 1000, Santa Maria, RS, 97105-900, Brazil
| | - Ana Isa P Marcolino
- Departamento de Farmácia Industrial, Universidade Federal de Santa Maria, Av. Roraima 1000, Santa Maria, RS, 97105-900, Brazil.,Programa de Pós-Graduação em Ciências Farmacêuticas, Universidade Federal de Santa Maria, Av. Roraima 1000, Santa Maria, RS, 97105-900, Brazil
| | - M Pilar Vinardell
- Departament de Fisiologia, Facultat de Farmàcia, Universitat de Barcelona, Av. Joan XXIII s/n, 08028, Barcelona, Spain
| | - Montserrat Mitjans
- Departament de Fisiologia, Facultat de Farmàcia, Universitat de Barcelona, Av. Joan XXIII s/n, 08028, Barcelona, Spain
| | - M Rosa Infante
- Departamento de Tecnología Química y de Tensioactivos, IQAC, CSIC, C/Jordi Girona 18-26, 08034, Barcelona, Spain
| | - Ammad A Farooqi
- Laboratory for Translational Oncology and Personalized Medicine, Rashid Latif Medical College, 35 km Ferozepur Road, Lahore, Pakistan
| | - Clarice M B Rolim
- Departamento de Farmácia Industrial, Universidade Federal de Santa Maria, Av. Roraima 1000, Santa Maria, RS, 97105-900, Brazil.,Programa de Pós-Graduação em Ciências Farmacêuticas, Universidade Federal de Santa Maria, Av. Roraima 1000, Santa Maria, RS, 97105-900, Brazil
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18
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Nanoparticles incorporating pH-responsive surfactants as a viable approach to improve the intracellular drug delivery. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2015; 57:100-6. [PMID: 26354244 DOI: 10.1016/j.msec.2015.07.036] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/11/2015] [Revised: 05/13/2015] [Accepted: 07/14/2015] [Indexed: 12/13/2022]
Abstract
The pH-responsive delivery systems have brought new advances in the field of functional nanodevices and might allow more accurate and controllable delivery of specific cargoes, which is expected to result in promising applications in different clinical therapies. Here we describe a family of chitosan-TPP (tripolyphosphate) nanoparticles (NPs) for intracellular drug delivery, which were designed using two pH-sensitive amino acid-based surfactants from the family N(α),N(ε)-dioctanoyl lysine as bioactive compounds. Low and medium molecular weight chitosan (LMW-CS and MMW-CS, respectively) were used for NP preparation, and it was observed that the size distribution for NPs with LMW-CS were smaller (~168 nm) than that for NPs prepared with MMW-CS (~310 nm). Hemolysis assay demonstrated the pH-dependent biomembrane disruptional capability of the constructed NPs. The nanostructures incorporating the surfactants cause negligible membrane permeabilization at pH7.4. However, at acidic pH, prevailing in endosomes, membrane-destabilizing activity in an erythrocyte lysis assay became evident. When pH decreased to 6.6 and 5.4, hemolytic capability of chitosan NPs increased along with the raise of concentration. Furthermore, studies with cell culture showed that these pH-responsive NPs displayed low cytotoxic effects against 3T3 fibroblasts. The influence of chitosan molecular weight, chitosan to TPP weight ratio, nanoparticle size and nature of the surfactant counterion on the membrane-disruptive properties of nanoparticles was discussed in detail. Altogether, the results achieved here showed that by inserting the lysine-based amphiphiles into chitosan NPs, pH-sensitive membranolytic and potentially endosomolytic nanocarriers were developed, which, therefore, demonstrated ideal feasibility for intracellular drug delivery.
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Greber KE, Dawgul M, Kamysz W, Sawicki W, Łukasiak J. Biological and surface-active properties of double-chain cationic amino acid-based surfactants. Amino Acids 2014; 46:1893-8. [PMID: 24748099 DOI: 10.1007/s00726-014-1744-9] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2012] [Accepted: 04/04/2014] [Indexed: 10/25/2022]
Abstract
Cationic amino acid-based surfactants were synthesized via solid phase peptide synthesis and terminal acylation of their α and ε positions with saturated fatty acids. Five new lipopeptides, N-α-acyl-N-ε-acyl lysine analogues, were obtained. Minimum inhibitory concentration and minimum bactericidal (fungicidal) concentration were determined on reference strains of bacteria and fungi to evaluate the antimicrobial activity of the lipopeptides. Toxicity to eukaryotic cells was examined via determination of the haemolytic activities. The surface-active properties of these compounds were evaluated by measuring the surface tension and formation of micelles as a function of concentration in aqueous solution. The cationic surfactants demonstrated diverse antibacterial activities dependent on the length of the fatty acid chain. Gram-negative bacteria and fungi showed a higher resistance than Gram-positive bacterial strains. It was found that the haemolytic activities were also chain length-dependent values. The surface-active properties showed a linear correlation between the alkyl chain length and the critical micelle concentration.
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Affiliation(s)
- Katarzyna E Greber
- Department of Physical Chemistry, Faculty of Pharmacy, Medical University of Gdańsk, Gen. J. Hallera 107, 80-416, Gdańsk, Poland,
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Brito RO, Oliveira IS, Araújo MJ, Marques EF. Morphology, Thermal Behavior, and Stability of Self-Assembled Supramolecular Tubules from Lysine-Based Surfactants. J Phys Chem B 2013; 117:9400-11. [DOI: 10.1021/jp400127k] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Rodrigo O. Brito
- Centro de Investigação
em Química, Department of Chemistry and Biochemistry, University of Porto, Rua do Campo Alegre,
s/n, 4169-007
Porto, Portugal
| | - Isabel S. Oliveira
- Centro de Investigação
em Química, Department of Chemistry and Biochemistry, University of Porto, Rua do Campo Alegre,
s/n, 4169-007
Porto, Portugal
| | - Maria J. Araújo
- Centro de Investigação
em Química, Department of Chemistry and Biochemistry, University of Porto, Rua do Campo Alegre,
s/n, 4169-007
Porto, Portugal
| | - Eduardo F. Marques
- Centro de Investigação
em Química, Department of Chemistry and Biochemistry, University of Porto, Rua do Campo Alegre,
s/n, 4169-007
Porto, Portugal
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Vanhauteghem D, Janssens GPJ, Lauwaerts A, Sys S, Boyen F, Cox E, Meyer E. Exposure to the proton scavenger glycine under alkaline conditions induces Escherichia coli viability loss. PLoS One 2013; 8:e60328. [PMID: 23544135 PMCID: PMC3609748 DOI: 10.1371/journal.pone.0060328] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2012] [Accepted: 02/25/2013] [Indexed: 11/29/2022] Open
Abstract
Our previous work described a clear loss of Escherichia coli (E. coli) membrane integrity after incubation with glycine or its N-methylated derivatives N-methylglycine (sarcosine) and N,N-dimethylglycine (DMG), but not N,N,N-trimethylglycine (betaine), under alkaline stress conditions. The current study offers a thorough viability analysis, based on a combination of real-time physiological techniques, of E. coli exposed to glycine and its N-methylated derivatives at alkaline pH. Flow cytometry was applied to assess various physiological parameters such as membrane permeability, esterase activity, respiratory activity and membrane potential. ATP and inorganic phosphate concentrations were also determined. Membrane damage was confirmed through the measurement of nucleic acid leakage. Results further showed no loss of esterase or respiratory activity, while an instant and significant decrease in the ATP concentration occurred upon exposure to either glycine, sarcosine or DMG, but not betaine. There was a clear membrane hyperpolarization as well as a significant increase in cellular inorganic phosphate concentration. Based on these results, we suggest that the inability to sustain an adequate level of ATP combined with a decrease in membrane functionality leads to the loss of bacterial viability when exposed to the proton scavengers glycine, sarcosine and DMG at alkaline pH.
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Affiliation(s)
- Donna Vanhauteghem
- Department of Nutrition, Genetics and Ethology, Faculty of Veterinary Medicine, Ghent University, Merelbeke, Belgium.
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Ménard N, Tsapis N, Poirier C, Arnauld T, Moine L, Lefoulon F, Péan JM, Fattal E. Drug solubilization and in vitro toxicity evaluation of lipoamino acid surfactants. Int J Pharm 2012; 423:312-20. [DOI: 10.1016/j.ijpharm.2011.11.030] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2011] [Revised: 11/16/2011] [Accepted: 11/18/2011] [Indexed: 10/15/2022]
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Membrane-destabilizing activity of pH-responsive cationic lysine-based surfactants: role of charge position and alkyl chain length. Amino Acids 2011; 43:1203-15. [DOI: 10.1007/s00726-011-1176-8] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2011] [Accepted: 11/22/2011] [Indexed: 10/15/2022]
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24
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Ménard N, Tsapis N, Poirier C, Arnauld T, Moine L, Lefoulon F, Péan JM, Fattal E. Physicochemical characterization and toxicity evaluation of steroid-based surfactants designed for solubilization of poorly soluble drugs. Eur J Pharm Sci 2011; 44:595-601. [DOI: 10.1016/j.ejps.2011.10.006] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2011] [Revised: 09/30/2011] [Accepted: 10/05/2011] [Indexed: 10/16/2022]
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25
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Glycine and its N-methylated analogues cause pH-dependent membrane damage to enterotoxigenic Escherichia coli. Amino Acids 2011; 43:245-53. [PMID: 21912862 DOI: 10.1007/s00726-011-1068-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2011] [Accepted: 08/25/2011] [Indexed: 10/17/2022]
Abstract
The current study first investigates the emulsifying potential of glycine and its N-methylated derivatives N-methylglycine (sarcosine), N,N-dimethylglycine (DMG) and N,N,N-trimethylglycine (betaine) under varying pH conditions. Subsequently, the effect of these test compounds on the membrane integrity of enterotoxigenic Escherichia coli (ETEC) was evaluated. Oil in water emulsions containing each compound show that DMG is a more potent enhancer of emulsification than glycine, sarcosine and betaine under the conditions tested. Flow cytometry was used to investigate whether the emulsifying potential is associated with an effect on ETEC membrane integrity. The bacteria were exposed to each of the test compounds under varying pH conditions and membrane integrity was assessed using the LIVE/DEAD BacLight kit. Results show a membrane deteriorating effect caused by glycine, sarcosine and DMG, but not by betaine. This effect is pH- and time-dependent and has an apparent threshold at pH 9.0. Conventional plate counts confirmed concomitant changes in culturability of the membrane comprised bacteria.
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Jia D, Tao K, Wang J, Wang C, Zhao X, Yaseen M, Xu H, Que G, Webster JRP, Lu JR. Dynamic adsorption and structure of interfacial bilayers adsorbed from lipopeptide surfactants at the hydrophilic silicon/water interface: effect of the headgroup length. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2011; 27:8798-8809. [PMID: 21675796 DOI: 10.1021/la105129m] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Lipopeptides are an important group of biosurfactants expressed by microorganisms. Because they are well-known for being biocompatible, biodegradable, and highly surface active, they are attractive for a wide range of applications. Natural lipopeptide surfactants are however impure; it is hence difficult to use them for exploring the structure-function relation. In this work, a series of cationic lipopeptide surfactants, C(14)K(n) (n = 1-4), where C denotes the myristic acyl chain and K denotes lysine (Lys), have been synthesized, and their interfacial behavior has been characterized by studying their adsorption at the silicon/water interface (bearing a thin native oxide layer) using spectroscopic ellipsometry and neutron reflection (NR). The dynamic adsorption was marked by an initial fast step within the first 2-3 min followed by a slow molecular relaxation process over the subsequent 20-30 min. The initial rate of time-dependent adsorption and the equilibrated adsorbed amount showed a steady decrease with increasing n, indicating the impact of the molecular size, structure, and charge. NR revealed the formation of sandwiched bilayers from C(14)K(n), similar to conventional surfactants such as nonionic C(12)E(6) and cationic C(16)TAB. However, the electrostatic attraction between K and the silica surface caused confinement of the K groups, forcing the head segments into a predominantly flat-on conformation. This characteristic structural feature was confirmed by the almost constant thickness of the headgroup regions ranging from 8 to 11 Å as determined from NR combined with partial deuterium labeling to the acyl tail. An increase in area per molecular pair with n resulted directly from increasing the footprint. As a result, the hydrophobic back-to-back tail mixing and acyl chain tilting rose with n. The extent of chain-head intermixing became so intensified that the C(14)K(4) bilayer could be approximated to a uniform layer distribution.
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Affiliation(s)
- Donghui Jia
- Centre for Bioengineering and Biotechnology, China University of Petroleum (East China), Qingdao, China
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Nogueira DR, Mitjans M, Infante MR, Vinardell MP. The role of counterions in the membrane-disruptive properties of pH-sensitive lysine-based surfactants. Acta Biomater 2011; 7:2846-56. [PMID: 21421083 DOI: 10.1016/j.actbio.2011.03.017] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2010] [Revised: 02/04/2011] [Accepted: 03/15/2011] [Indexed: 12/29/2022]
Abstract
Surfactants are among the most versatile and widely used excipients in pharmaceuticals. This versatility, together with their pH-responsive membrane-disruptive activity and low toxicity, could also enable their potential application in drug delivery systems. Five anionic lysine-based surfactants which differ in the nature of their counterion were studied. Their capacity to disrupt the cell membrane was examined under a range of pH values, concentrations and incubation times, using a standard hemolysis assay as a model for endosomal membranes. The surfactants showed pH-sensitive hemolytic activity and improved kinetics at the endosomal pH range. Low concentrations resulted in negligible hemolysis at physiological pH and high membrane lytic activity at pH 5.4, which is in the range characteristic of late endosomes. With increasing concentration, the surfactants showed an enhanced capacity to lyse cell membranes, and also caused significant membrane disruption at physiological pH. This observation indicates that, at high concentrations, surfactant behavior is independent of pH. The mechanism of surfactant-mediated membrane destabilization was addressed, and scanning electron microscopy studies were also performed to evaluate the effects of the compounds on erythrocyte morphology as a function of pH. The in vitro cytotoxicity of the surfactants was assessed by MTT and NRU assays with the 3T3 cell line. The influence of different types of counterion on hemolytic activity and the potential applications of these surfactants in drug delivery are discussed. The possibility of using pH-sensitive surfactants for endosome disruption could hold great promise for intracellular drug delivery systems in future therapeutic applications.
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Affiliation(s)
- D R Nogueira
- Departament de Fisiologia, Facultat de Farmàcia, Universitat de Barcelona, Av. Joan XXIII s/n, E-08028 Barcelona, Spain
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Brito RO, Silva SG, Fernandes RMF, Marques EF, Enrique-Borges J, do Vale MLC. Enhanced interfacial properties of novel amino acid-derived surfactants: Effects of headgroup chemistry and of alkyl chain length and unsaturation. Colloids Surf B Biointerfaces 2011; 86:65-70. [PMID: 21493048 DOI: 10.1016/j.colsurfb.2011.03.017] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2010] [Accepted: 03/15/2011] [Indexed: 11/25/2022]
Abstract
Amino acid-derived surfactants have increasingly become a viable biofriendly alternative to petrochemically based amphiphiles as speciality surfactants. Herein, the Krafft temperatures and critical micelle concentrations (cmc) of three series of novel amino acid-derived surfactants have been determined by differential scanning microcalorimetry and surface tension measurements, respectively. The compounds comprise cationic molecules based on serine and tyrosine headgroups and anionic ones based on 4-hydroxyproline headgroups, with varying chain lengths. A linear dependence of the logarithm of cmc on chain length is found for all series, and in comparison to conventional ionic surfactants of equal chain length, the new amphiphiles present lower cmc and lower surface tension at the cmc. These observations highlight their enhanced interfacial performance. For the 18-carbon serine-derived surfactant the effects of counterion change and of the presence of a cis-double bond in the alkyl chain have also been investigated. The overall results are discussed in terms of headgroup and alkyl chain effects on micellization, in the light of available data for conventional surfactants and other types of amino acid-based amphiphiles reported in the literature.
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Affiliation(s)
- Rodrigo O Brito
- Centro de Investigação em Química, Department of Chemistry and Biochemistry, Faculty of Sciences, University of Porto, Rua do Campo Alegre, No 687, P-4169-007 Porto, Portugal
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29
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Physicochemical and toxicological properties of novel amino acid-based amphiphiles and their spontaneously formed catanionic vesicles. Colloids Surf B Biointerfaces 2009; 72:80-7. [DOI: 10.1016/j.colsurfb.2009.03.017] [Citation(s) in RCA: 58] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2009] [Accepted: 03/24/2009] [Indexed: 11/19/2022]
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30
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Towards novel efficient monomeric surfactants based on serine, tyrosine and 4-hydroxyproline: synthesis and micellization properties. Tetrahedron 2009. [DOI: 10.1016/j.tet.2009.03.043] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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31
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Gomes P, Araújo MJ, Marques EF, Falcão S, Brito RO. Straightforward Method for the Preparation of Lysine-Based Double-Chained Anionic Surfactants. SYNTHETIC COMMUN 2008. [DOI: 10.1080/00397910801997827] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Paula Gomes
- a CIQUP, Department of Chemistry, Faculty of Sciences , University of Porto , Porto, Portugal
| | - Maria João Araújo
- a CIQUP, Department of Chemistry, Faculty of Sciences , University of Porto , Porto, Portugal
| | - Eduardo F. Marques
- a CIQUP, Department of Chemistry, Faculty of Sciences , University of Porto , Porto, Portugal
| | - Soraia Falcão
- a CIQUP, Department of Chemistry, Faculty of Sciences , University of Porto , Porto, Portugal
| | - Rodrigo O. Brito
- a CIQUP, Department of Chemistry, Faculty of Sciences , University of Porto , Porto, Portugal
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Sánchez L, Martínez V, Infante MR, Mitjans M, Vinardell MP. Hemolysis and antihemolysis induced by amino acid-based surfactants. Toxicol Lett 2007; 169:177-84. [PMID: 17293064 DOI: 10.1016/j.toxlet.2007.01.003] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2006] [Revised: 01/09/2007] [Accepted: 01/10/2007] [Indexed: 11/18/2022]
Abstract
Surfactants have the special ability to interact with the lipid bilayer of cell membranes. The red blood cell is one of the most used cellular membrane models to study the mechanisms underlying surfactant-induced osmotic cell resistance. To increase our knowledge regarding the mechanisms of surfactant membrane interaction, we studied the action of five lysine-derivative anionic and three arginine-derivative cationic amino acid-based surfactants on hypotonic hemolysis. Results showed two different antihemolytic behaviors among amino acid-based surfactants, both related to the maximal protective concentration. How the physico-chemical properties and structure of these compounds determine the protection against hypotonic hemolysis is discussed in detail. We found a good correlation between the CMC and the concentrations resulting in maximum protection against hypotonic hemolysis for the cationic surfactants, but no correlation for the anionic surfactants. In the case of lysine derivative surfactants, which only differ in their counterions, the counterion is implicated in the differences in the antihemolytic potency and the hemolytic activities of this.
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Affiliation(s)
- Lourdes Sánchez
- Departament de Fisiologia, Facultat de Farmàcia, Universitat de Barcelona, Av. Joan XXIII s/n, 08028 Barcelona, Spain
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Martínez V, Sánchez L, Busquets MA, Infante MR, Pilar Vinardell M, Mitjans M. Disturbance of erythrocyte lipid bilayer by amino acid-based surfactants. Amino Acids 2006; 33:459-62. [PMID: 17086480 DOI: 10.1007/s00726-006-0447-2] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2006] [Accepted: 09/20/2006] [Indexed: 11/26/2022]
Abstract
In an attempt to increase our knowledge regarding the mechanisms of surfactant membrane interaction, we studied the action of several anionic and cationic amino acid-based surfactants on membrane fluidity using fluorescence anisotropy. Anisotropy measurements demonstrated that almost all of the surfactants studied disturbed the external region of the erythrocyte membrane without affecting the core of the bilayer. How the physico-chemical properties and structure of these compounds affect dynamics of the lipid bilayer is discussed in detail.
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Affiliation(s)
- V Martínez
- Departament de Fisiologia, Facultat de Farmàcia, Universitat de Barcelona, Barcelona, Spain
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Sanchez L, Mitjans M, Infante MR, Vinardell MP. Determination of interleukin-1α in human NCTC 2544 keratinocyte cells as a predictor of skin irritation from lysine-based surfactants. Toxicol Lett 2006; 167:40-6. [PMID: 16996234 DOI: 10.1016/j.toxlet.2006.08.006] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2006] [Revised: 08/17/2006] [Accepted: 08/18/2006] [Indexed: 11/27/2022]
Abstract
Lysine derivative surfactants are a class of amino acid-based surfactants synthesized as lecithin analogues that deserve particular attention because of their low toxicity and high biocompatibility. To complete the toxicological profile of these surfactants, IL-1 alpha production (cell-associated and release to the culture medium) was determined as an in vitro method for predicting skin irritation. In addition, an MTT assay was used as a viability marker in keratinocytes NCTC 2544. Keratinocytes are a biologically relevant target for developing in vitro techniques to assess skin irritants: moreover, they are the principal source of the proinflammatory cytokine IL-1 alpha in the epidermis. Lysine derivatives proved to be less potent in stimulating IL-1 alpha synthesis and induced a lower release of this cytokine into the culture medium when compared to the anionic surfactant sodium dodecyl sulfate. Due to their low irritancy potential, lysine-based surfactants may offer promising applications in pharmaceutical and cosmetic preparations.
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Affiliation(s)
- L Sanchez
- Departament de Fisiologia, Facultat de Farmàcia, Universitat de Barcelona, Av Joan XXIII, s/n, Barcelona, Spain
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