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Mohammed AI, Ahmed AM, Bhadbhade MM, Ho J, Read RW. Sugar-substituted fluorous 1,2,3-triazoles: Helical twists in fluoroalkyl chains and their molecular association in the solid state and correlations with physicochemical properties. J Fluor Chem 2020. [DOI: 10.1016/j.jfluchem.2020.109536] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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2
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Ahmed AM, Mohammed AI, Read RW. Towards Functional Fluorous Surfactants. Synthesis and Spectroscopic Features of Systematically Modified Sugar-Substituted Fluorous 1,2,3-Triazoles. J Fluor Chem 2020. [DOI: 10.1016/j.jfluchem.2020.109519] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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3
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4
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New cationic vesicles prepared with double chain surfactants from arginine: Role of the hydrophobic group on the antimicrobial activity and cytotoxicity. Colloids Surf B Biointerfaces 2016; 141:19-27. [DOI: 10.1016/j.colsurfb.2016.01.020] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2015] [Revised: 01/11/2016] [Accepted: 01/12/2016] [Indexed: 11/21/2022]
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5
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Krafft MP. Overcoming inactivation of the lung surfactant by serum proteins: a potential role for fluorocarbons? SOFT MATTER 2015; 11:5982-5994. [PMID: 26110877 DOI: 10.1039/c5sm00926j] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
In many pulmonary conditions serum proteins interfere with the normal adsorption of components of the lung surfactant to the surface of the alveoli, resulting in lung surfactant inactivation, with potentially serious untoward consequences. Here, we review the strategies that have recently been designed in order to counteract the biophysical mechanisms of inactivation of the surfactant. One approach includes protein analogues or peptides that mimic the native proteins responsible for innate resistance to inactivation. Another perspective uses water-soluble additives, such as electrolytes and hydrophilic polymers that are prone to enhance adsorption of phospholipids. An alternative, more recent approach consists of using fluorocarbons, that is, highly hydrophobic inert compounds that were investigated for partial liquid ventilation, that modify interfacial properties and can act as carriers of exogenous lung surfactant. The latter approach that allows fluidisation of phospholipid monolayers while maintaining capacity to reach near-zero surface tension definitely warrants further investigation.
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Affiliation(s)
- Marie Pierre Krafft
- Institut Charles Sadron (CNRS), University of Strasbourg, 23 rue du Loess, 67034 Strasbourg Cedex, France.
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6
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Medicinal applications of perfluoroalkylated chain-containing compounds. Future Med Chem 2015; 6:1201-29. [PMID: 25078138 DOI: 10.4155/fmc.14.53] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Compounds with polyfluorinated molecular fragments possess unique properties associated with the presence of a large number of fluorine atoms that affect lipophilicity and conformational rigidity of the parent molecule along with other effects. The aim of this review is to provide an overview of synthesized compounds possessing perfluoroalkylated or polyfluorinated chains that have been tested for bioactivity or as potential drug candidates for the treatment of various diseases. As far as the length of the perfluoroalkylated chain is concerned the focus is centered on the compound bearing perfluoroethyl or tetrafluoroethyl as well as longer chains. The perfluoroalkylated compounds discussed are classified according to their biological activity.
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Chauhan V, Singh S, Kamboj R, Mishra R, Kaur G. Self-assembly, DNA binding and cytotoxicity trends of ether functionalized gemini pyridinium amphiphiles. J Colloid Interface Sci 2013; 417:385-95. [PMID: 24407701 DOI: 10.1016/j.jcis.2013.11.059] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2013] [Revised: 11/21/2013] [Accepted: 11/22/2013] [Indexed: 11/16/2022]
Abstract
Six new ether functionalized gemini pyridinium amphiphiles have been synthesized having dodecyl, tetradecyl alkyl chain lengths and three different spacers (i.e. -(CH2)n-, where n is 4, 5 and 6) and investigated for their self-assembling behavior by state of the art techniques such as tensiometry, conductivity and spectrofluorometry. These new pyridinium gemini surfactants exhibit lower cmc values as compared to other gemini surfactants reported in literature. These amphiphiles form stable complexes with DNA as established by agarose gel electrophoresis and ethidium bromide exclusion experiments. MTT (3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide) assay was carried out in vitro on C6 glioma cell line for cytotoxicity assessment of new pyridinium geminis. The dynamic light scattering (DLS) and transmission electron microscopy (TEM) have been used to measure the micellar size of gemini surfactants. Further, thermal stability of these amphiphiles has been evaluated by thermogravimetric analysis (TGA). The dependence of self-assembly behavior and other properties on spacer as well as alkyl chain length has been established.
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Affiliation(s)
- Vinay Chauhan
- Department of Chemistry, UGC Centre for Advanced Studies, Guru Nanak Dev University, Amritsar 143005, India
| | - Sukhprit Singh
- Department of Chemistry, UGC Centre for Advanced Studies, Guru Nanak Dev University, Amritsar 143005, India.
| | - Raman Kamboj
- Department of Chemistry, UGC Centre for Advanced Studies, Guru Nanak Dev University, Amritsar 143005, India
| | - Rachana Mishra
- Department of Chemistry, UGC Centre for Advanced Studies, Guru Nanak Dev University, Amritsar 143005, India
| | - Gurcharan Kaur
- Department of Chemistry, UGC Centre for Advanced Studies, Guru Nanak Dev University, Amritsar 143005, India
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8
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Biocidal and inhibitory activity screening of de novo synthesized surfactants against two eukaryotic and two prokaryotic microbial species. Colloids Surf B Biointerfaces 2013; 111:407-17. [DOI: 10.1016/j.colsurfb.2013.06.033] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2013] [Revised: 05/24/2013] [Accepted: 06/17/2013] [Indexed: 11/19/2022]
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9
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Chauhan V, Singh S, Kamboj R, Mishra R, Kaur G. Synthesis, micellization properties, and cytotoxicity trends of N-hydroxyethyl-3-alkyloxypyridinium surfactants. Colloid Polym Sci 2013. [DOI: 10.1007/s00396-013-3083-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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10
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Andreev VN, Grinberg VA, Dedov AG, Loktev AS, Mayorova NA, Moiseev II, Stepanov AA. Anodic trifluoromethylation of 10-undecylenic acid. RUSS J ELECTROCHEM+ 2013. [DOI: 10.1134/s1023193513100030] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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11
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Colomer A, Perez L, Pons R, Infante MR, Perez-Clos D, Manresa A, Espuny MJ, Pinazo A. Mixed monolayer of DPPC and lysine-based cationic surfactants: an investigation into the antimicrobial activity. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2013; 29:7912-7921. [PMID: 23750883 DOI: 10.1021/la401092j] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
In this paper, we report studies which aim to elucidate the mechanisms involved in the antimicrobial activity of three cationic lysine-based surfactants: LLM, LALM, and C6 (LL)2. To this end, a simple membrane model (i.e., 1,2-dipalmitoyl-sn-phosphatidylcholine, DPPC) was used to explore the monolayer properties at the air/liquid interface. Compression π-A isotherms of mixtures of DPPC/lysine surfactants at different pH showed an expansion of the DPPC monolayer, suggesting cationic lysine surfactant/DPPC interactions, which strongly depend on surfactant structure and hydrophobic interactions. Antimicrobial activity of the three surfactants has also been assessed with transmission electron microscopy, observing the effects on Staphylococcus aureus and Escherichia coli . The three surfactants caused various kinds of damage to the bacteria tested, such as structural alterations, leakage of internal material, and cell destruction.
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Affiliation(s)
- Aurora Colomer
- Department de Tecnologia Química i de Tensioactius, IQAC-CSIC, Jordi Girona 18, 08034 Barcelona, Spain
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12
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Łuczyński J, Frąckowiak R, Włoch A, Kleszczyńska H, Witek S. Gemini ester quat surfactants and their biological activity. Cell Mol Biol Lett 2013; 18:89-101. [PMID: 23271433 PMCID: PMC6275804 DOI: 10.2478/s11658-012-0041-4] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2012] [Accepted: 12/13/2012] [Indexed: 11/20/2022] Open
Abstract
Cationic gemini surfactants are an important class of surface-active compounds that exhibit much higher surface activity than their monomeric counterparts. This type of compound architecture lends itself to the compound being easily adsorbed at interfaces and interacting with the cellular membranes of microorganisms. Conventional cationic surfactants have high chemical stability but poor chemical and biological degradability. One of the main approaches to the design of readily biodegradable and environmentally friendly surfactants involves inserting a bond with limited stability into the surfactant molecule to give a cleavable surfactant. The best-known example of such a compound is the family of ester quats, which are cationic surfactants with a labile ester bond inserted into the molecule. As part of this study, a series of gemini ester quat surfactants were synthesized and assayed for their biological activity. Their hemolytic activity and changes in the fluidity and packing order of the lipid polar heads were used as the measures of their biological activity. A clear correlation between the hemolytic activity of the tested compounds and their alkyl chain length was established. It was found that the compounds with a long hydrocarbon chain showed higher activity. Moreover, the compounds with greater spacing between their alkyl chains were more active. This proves that they incorporate more easily into the lipid bilayer of the erythrocyte membrane and affect its properties to a greater extent. A better understanding of the process of cell lysis by surfactants and of their biological activity may assist in developing surfactants with enhanced selectivity and in widening their range of application.
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Affiliation(s)
- Jacek Łuczyński
- Faculty of Chemistry, Wrocław University of Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland.
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Mezei A, Pérez L, Pinazo A, Comelles F, Infante MR, Pons R. Self assembly of pH-sensitive cationic lysine based surfactants. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2012; 28:16761-16771. [PMID: 23163615 DOI: 10.1021/la304117f] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Three cationic surfactants of the type N(ε)-acyl lysine methyl ester hydrochloride have been studied with respect to solution behavior and adsorption on the air/water interface, as well as the thermolyotropic behavior. The self-assembly of these surfactants, which have the cationic charge on amine protonated groups, was assessed by different physicochemical methods. Depending on the pH value, these surfactants can dissociate in aqueous solutions, losing the cationic charge. Therefore, knowledge of the pK(a) of these compounds is essential to explain their behavior in aqueous solutions. The bulk techniques, conductivity, and nuclear magnetic resonance diffusion (NMR) obtained similar critical micellar concentration (CMC) values, which were well above those obtained from surface tension. Surface tension measurements were strongly dependent on the technique used, namely, Wilhelmy plate and pendant drop. The phase behavior at medium to high concentrations has been studied by optical polarizing microscopy and small angle x-ray scattering (SAXS). The X-ray studies showed that the lysine-based surfactants at low hydration have rich thermotropic liquid crystalline behavior. The results are discussed in terms of the structure of the compounds and the cationic charge of the molecule. We will show how apparently small changes in molecule structure have a large influence on phase behavior.
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Affiliation(s)
- Amalia Mezei
- Departament de Tecnologia Química i de Tensioactius, Institut de Química Avançada de Catalunya, IQAC-CSIC, c/Jordi Girona 18-26, 08034 Barcelona, Spain
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14
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Kamboj R, Singh S, Bhadani A, Kataria H, Kaur G. Gemini imidazolium surfactants: synthesis and their biophysiochemical study. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2012; 28:11969-78. [PMID: 22845861 DOI: 10.1021/la300920p] [Citation(s) in RCA: 81] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
Abstract
New gemini imidazolium surfactants 9-13 have been synthesized by a regioselective epoxy ring-opening reaction under solvent-free conditions. The surface properties of these new gemini surfactants were evaluated by surface tension and conductivity measurements. These surfactants have been found to have low critical micelle concentration (cmc) values as compared to other categories of gemini cationic surfactants and also showed the tendency to form premicellar aggregates in solution at sufficiently low concentration below their cmc values. The thermal degradation of these surfactants was determined by thermograviometry analysis (TGA). These new cationic surfactants have a good DNA binding capability as determined by agarose gel electrophoresis and ethidium bromide exclusion experiments. They have also been found to have low cytotoxicity by MTT (3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide) assay on the C6 glioma cell line.
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Affiliation(s)
- Raman Kamboj
- Department of Chemistry, UGC Sponsored-Centre of Advance Studies-1, Guru Nanak Dev University, Amritsar, India
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15
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Colomer A, Pinazo A, García MT, Mitjans M, Vinardell MP, Infante MR, Martínez V, Pérez L. pH-Sensitive surfactants from lysine: assessment of their cytotoxicity and environmental behavior. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2012; 28:5900-5912. [PMID: 22428847 DOI: 10.1021/la203974f] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
The toxicity and environmental behavior of new pH-sensitive surfactants from lysine are presented. Three different chemical structures are studied: surfactants with one amino acid and one alkyl chain, surfactants with two amino acids on the polar head and one alkyl chain, and gemini surfactants. The pH sensitivity of these compounds can be tuned by modifying their chemical structures. Cytotoxicity has been evaluated using erythrocytes and fibroblast cells. The toxic effects against these cells depend on the hydrophobicity of the molecules as well as their cationic charge density. The effect of hydrophobicity and cationic charge density on toxicity is different for each type of cells. For erythrocytes, the toxicity increases as hydrophobicity and charge density increases. Nevertheless, for fibroblasts cationic charge density affects cytotoxicity in the opposite way: the higher charge density, the lower the toxicity. The effect of the pH on hemolysis has been evaluated in detail. The aquatic toxicity was established using Daphnia magna . All surfactants yielded EC(50) values considerably higher than that reported for cationic surfactants based on quaternary ammonium groups. Finally, their biodegradability was evaluated using the CO(2) headspace test (ISO 14593). These lysine derivatives showed high levels of biodegradation under aerobic conditions and can be classified as "readily biodegradable compounds".
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Affiliation(s)
- Aurora Colomer
- Departamento de Tecnología Química y de Tensioactivos, IQAC, CSIC, C/Jordi Girona 18-26, 08034, Barcelona, Spain
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16
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Ghosh K, Lehmler HJ, Rankin SE, Knutson BL. Supercritical carbon dioxide swelling of fluorinated and hydrocarbon surfactant templates in mesoporous silica thin films. J Colloid Interface Sci 2012; 367:183-92. [DOI: 10.1016/j.jcis.2011.10.051] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2011] [Revised: 10/21/2011] [Accepted: 10/22/2011] [Indexed: 10/15/2022]
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17
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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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18
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Francis DV, Miles DH, Mohammed AI, Read RW, Wang X. Towards functional fluorous surfactants. Synthesis of hydrophilic fluorous 1,2,3-triazolylmethyl ethers and di(1,2,3-triazolylmethyl) ethers. J Fluor Chem 2011. [DOI: 10.1016/j.jfluchem.2011.07.002] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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19
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Biophysical investigation of the interfacial properties of cationic fluorocarbon/hydrocarbon hybrid surfactant: Mimicking the lung surfactant protein C. J Colloid Interface Sci 2011; 360:163-74. [DOI: 10.1016/j.jcis.2011.04.018] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2011] [Revised: 04/02/2011] [Accepted: 04/07/2011] [Indexed: 01/09/2023]
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20
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Colomer A, Pinazo A, Manresa MA, Vinardell MP, Mitjans M, Infante MR, Pérez L. Cationic surfactants derived from lysine: effects of their structure and charge type on antimicrobial and hemolytic activities. J Med Chem 2011; 54:989-1002. [PMID: 21229984 DOI: 10.1021/jm101315k] [Citation(s) in RCA: 124] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Three different sets of cationic surfactants from lysine have been synthesized. The first group consists of three monocatenary surfactants with one lysine as the cationic polar head with one cationic charge. The second consists of three monocatenary surfactants with two amino acids as cationic polar head with two positive charges. Finally, four gemini surfactants were synthesized in which the spacer chain and the number and type of cationic charges have been regulated. The micellization process, antimicrobial activity, and hemolytic activity were evaluated. The critical micelle concentration was dependent only on the hydrophobic character of the molecules. Nevertheless, the antimicrobial and hemolytic activities were related to the structure of the compounds as well as the type of cationic charges. The most active surfactants against the bacteria were those with a cationic charge on the trimethylated amino group, whereas all of these surfactants showed low hemolytic character.
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Affiliation(s)
- A Colomer
- Departamento de Tecnología Química y de Tensioactivos, IQAC, CSIC, C/Jordi Girona 18-26, 08034 Barcelona, Spain
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21
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Infante MR, Pérez L, Morán MC, Pons R, Mitjans M, Vinardell MP, Garcia MT, Pinazo A. Biocompatible surfactants from renewable hydrophiles. EUR J LIPID SCI TECH 2010. [DOI: 10.1002/ejlt.200900110] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Bhadani A, Singh S. Novel gemini pyridinium surfactants: synthesis and study of their surface activity, DNA binding, and cytotoxicity. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2009; 25:11703-12. [PMID: 19788223 DOI: 10.1021/la901641f] [Citation(s) in RCA: 81] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
Abstract
New pyridinium gemini amphiphiles having ethane-1,2-dithiol spacer have been synthesized by regioselective electrophilic cobromination of alpha-olefins. Ethane-1,2-dithiol (1) and N-bromosuccinimide (6) on reaction with alpha-olefins (dodecene (2), tetradecene (3), hexadecene (4), and octadecene (5)) gave the respective 1,2-bis(2-bromoalkylthio)ethane (7-10). The bromoalkylthio ethers when reacted with pyridine (11) gave the respective gemini bispyridinium bromide (12-15). The surface properties of new geminis were evaluated by surface tension and conductivity measurements. These gemini surfactants have also been found to be having low cytotoxicity by MTT (3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide) assay on C6 glioma cells. The DNA binding capabilities of these amphiphiles have been determined below as well as above critical micelle concentration. The preliminary studies by agarose gel electrophoresis indicated chain length dependent DNA binding abilities which has further been proved by ethidium bromide exclusion experiments and transmission electron microscopy (TEM).
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Affiliation(s)
- Avinash Bhadani
- Department of Chemistry, Guru Nanak Dev University, Amritsar, India
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23
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Riess JG. Highly fluorinated amphiphilic molecules and self-assemblies with biomedical potential. Curr Opin Colloid Interface Sci 2009. [DOI: 10.1016/j.cocis.2009.05.008] [Citation(s) in RCA: 112] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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Quagliotto P, Barolo C, Barbero N, Barni E, Compari C, Fisicaro E, Viscardi G. Synthesis and Characterization of Highly Fluorinated Gemini Pyridinium Surfactants. European J Org Chem 2009. [DOI: 10.1002/ejoc.200900063] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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25
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Li X, Turánek J, Knötigová P, Kudlácková H, Masek J, Parkin S, Rankin SE, Knutson BL, Lehmler HJ. Hydrophobic tail length, degree of fluorination and headgroup stereochemistry are determinants of the biocompatibility of (fluorinated) carbohydrate surfactants. Colloids Surf B Biointerfaces 2009; 73:65-74. [PMID: 19481909 DOI: 10.1016/j.colsurfb.2009.04.023] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2009] [Revised: 04/28/2009] [Accepted: 04/28/2009] [Indexed: 11/29/2022]
Abstract
A series of hydrocarbon and fluorocarbon carbohydrate surfactants with different headgroups (i.e., gluco-, galacto- and maltopyranoside) and (fluorinated) alkyl tails (i.e., C7 and C14 to C19) was synthesized to investigate trends in their cytotoxicity and haemolytic activity, and how surfactant-lipid interactions of selected surfactants contribute to these two measures of biocompatibility. All surfactants displayed low cytotoxicity (EC50 = 25 to >250 microM) and low haemolytic activity (EC50 = 0.2 to >3.3 mM), with headgroup structure, tail length and degree of fluorination being important structural determinants for both endpoints. The EC50 values of hydrocarbon and fluorocarbon glucopyranoside surfactants displayed a "cut-off" effect (i.e., a maximum with respect to the chain length). According to steady-state fluorescence anisotropy studies, short chain (C7) surfactants partitioned less readily into model membranes, which explains their low cytotoxicity and haemolytic activity. Interestingly, galactopyranosides were less toxic compared to glucopyranosides with the same hydrophobic tail. Although both surfactant types only differ in the stereochemistry of the 4-OH group, hexadecyl gluco- and galactopyranoside surfactants had similar apparent membrane partition coefficients, but differed in their overall effect on the phase behaviour of DPPC model membranes, as assessed using steady-state fluorescence anisotropy studies. These observations suggest that highly selective surfactant-lipid interactions may be responsible for the differential cytotoxicity and, possible, haemolytic activity of hydrocarbon and fluorocarbon carbohydrate surfactants intended for a variety of pharmaceutical and biomedical applications.
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Affiliation(s)
- Xueshu Li
- Department of Occupational and Environmental Health, University of Iowa, Iowa City, IA 52242, USA
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26
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Singh S, Bhadani A, Kataria H, Kaur G, Kamboj R. Synthesis of Glycerol-Based Pyridinium Surfactants and Appraisal of Their Properties. Ind Eng Chem Res 2009. [DOI: 10.1021/ie801737m] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Sukhprit Singh
- Department of Chemistry and Department of Biotechnology, Guru Nanak Dev University, Amritsar 143005, India
| | - Avinash Bhadani
- Department of Chemistry and Department of Biotechnology, Guru Nanak Dev University, Amritsar 143005, India
| | - Hardeep Kataria
- Department of Chemistry and Department of Biotechnology, Guru Nanak Dev University, Amritsar 143005, India
| | - Gurcharan Kaur
- Department of Chemistry and Department of Biotechnology, Guru Nanak Dev University, Amritsar 143005, India
| | - Raman Kamboj
- Department of Chemistry and Department of Biotechnology, Guru Nanak Dev University, Amritsar 143005, India
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Van der Steen M, Stevens CV. Undecylenic acid: a valuable and physiologically active renewable building block from castor oil. CHEMSUSCHEM 2009; 2:692-713. [PMID: 19650106 DOI: 10.1002/cssc.200900075] [Citation(s) in RCA: 78] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
A lot of attention is currently being paid to the transition to a biobased economy. In this movement, most efforts concentrate on the development of bioenergy applications including bioethanol, biodiesel, thermochemical conversion of biomass, and others. However, in the energy sector other nonbiomass alternatives are known, whereas no valuable alternatives are available when thinking about chemical building blocks. Therefore, it is also essential to develop new routes for the synthesis of bio-based chemicals and materials derived thereof. Such intermediates can originate either from plants or from animals. Castor oil is a non-edible oil extracted from the seeds of the castor bean plant Ricinus communis (Euphorbiaceae), which grows in tropical and subtropical areas. Globally, around one million tons of castor seeds are produced every year, the leading producing areas being India, PR China, and Brazil.2 10-Undecenoic acid or undecylenic acid is a fatty acid derived from castor oil that, owing to its bifunctional nature, has many possibilities to develop sustainable applications.
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28
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Li X, Turánek J, Knötigová P, Kudláčková H, Mašek J, Pennington DB, Rankin SE, Knutson BL, Lehmler HJ. Synthesis and biocompatibility evaluation of fluorinated, single-tailed glucopyranoside surfactants. NEW J CHEM 2008. [DOI: 10.1039/b805015e] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Abstract
Drug delivery to the diseased lung is hindered by the buildup of fluid and shunting of blood flow away from the site of injury. The use of perfluorocarbon compounds (PFCs) as drug delivery vehicles has been proposed to overcome these obstacles. This drug delivery approach is based on the unique properties of PFCs. For example, PFCs can homogeneously fill the lung and recruit airways by replacing edematous fluid. Analogously, drugs administered with a PFC vehicle are expected to be homogeneously distributed throughout the lung. At the same time, intrapulmonary administration of the drug will achieve higher drug concentrations in the lung than conventional approaches, while reducing systemic exposure. Unfortunately, PFCs are poor solvents for typical drug molecules. To overcome this obstacle, several approaches, such as dispersions, prodrugs, solubilizing agents and (micro)emulsions, are under investigation to develop homogeneous PFC-drug mixtures suitable for intrapulmonary administration.
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Affiliation(s)
- Hans-Joachim Lehmler
- Research Scientist, University of Iowa, Department of Occupational and Environmental Health, Iowa City, IA 52242, USA.
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Ghera BB, Perret F, Baudouin A, Coleman AW, Parrot-Lopez H. Synthesis and characterisation of O-6-alkylthio- and perfluoroalkylpropanethio-α-cyclodextrins and their O-2-, O-3-methylated analogues. NEW J CHEM 2007. [DOI: 10.1039/b703894a] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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