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Differential impact of synthetic antitumor lipid drugs on the membrane organization of phosphatidic acid and diacylglycerol monolayers. Chem Phys Lipids 2020; 229:104896. [PMID: 32184083 DOI: 10.1016/j.chemphyslip.2020.104896] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2019] [Revised: 02/19/2020] [Accepted: 03/11/2020] [Indexed: 12/16/2022]
Abstract
Anti-tumour lipids are synthetic analogues of lysophosphatidylcholine. These drugs are both cytotoxic and cytostatic, and more interestingly, exert these effects preferentially in tumour cells. While the exact mechanism of action isn't fully elucidated, these drugs appear to preferentially partition into rigid lipid domains in cell membranes. Upon insertion, the compounds alter membrane domain organization, disrupt normal signal transduction, and cause cell death. Recently, it has been reported that these drugs induce accumulation of diacylglycerol in yeast cells which in turn sensitizes cells to the drugs. Conversely, phosphatidic acid accumulation appears to protect cells against the drugs. In the current work, the aim was to compare the biophysical effects of the drugs edelfosine, miltefosine and perifosine on monolayers of dimyristoyl phosphatidic acid, dimyristoyl glycerol and an equimolar mixture, to understand how these lipids modulate the mode of action. Surface pressure - area isotherms, compression moduli and Brewster angle microscopy were used to compare drug effects on lipid packing, monolayer compressibility and lateral domain organization of these films. Results suggest that edelfosine and miltefosine have stabilizing effects on all of the monolayers, while perifosine destabilizes dimyristoyl glycerol and the equimolar mixture. Additionally, all three drugs change the morphology of the domains observed. Based on these results the stabilization of diacylgylcerol by edelfosine and miltefosine may contribute to the mode of action as diacylglycerol is a known disruptor of bilayers. Perifosine however does not stabilize diacylglycerol, and therefore cell death may occur through a more direct inhibition of specific signal transduction. These results suggest that perifosine may illicit cytotoxicity through a different mechanism compared to the other antitumor lipid drugs.
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Hazell G, Gee AP, Arnold T, Edler KJ, Lewis SE. Langmuir monolayers composed of single and double tail sulfobetaine lipids. J Colloid Interface Sci 2016; 474:190-8. [DOI: 10.1016/j.jcis.2016.04.020] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2016] [Revised: 04/13/2016] [Accepted: 04/14/2016] [Indexed: 11/16/2022]
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Mahadeo M, Nathoo S, Ganesan S, Driedger M, Zaremberg V, Prenner EJ. Disruption of lipid domain organization in monolayers of complex yeast lipid extracts induced by the lysophosphatidylcholine analogue edelfosine in vivo. Chem Phys Lipids 2015; 191:153-62. [PMID: 26386399 DOI: 10.1016/j.chemphyslip.2015.09.004] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2015] [Revised: 09/08/2015] [Accepted: 09/15/2015] [Indexed: 10/23/2022]
Abstract
The lysophosphatidylcholine analogue edelfosine is a potent antitumor and antiparasitic drug that targets cell membranes. Previous studies have shown that edelfosine alters membrane domain organization inducing internalization of sterols and endocytosis of plasma membrane transporters. These early events affect signaling pathways that result in cell death. It has been shown that edelfosine preferentially partitions into more rigid lipid domains in mammalian as well as in yeast cells. In this work we aimed at investigating the effect of edelfosine on membrane domain organization using monolayers prepared from whole cell lipid extracts of cells treated with edelfosine compared to control conditions. In Langmuir monolayers we were able to detect important differences to the lipid packing of the membrane monofilm. Domain formation visualized by means of Brewster angle microscopy also showed major morphological changes between edelfosine treated versus control samples. Importantly, edelfosine resistant cells defective in drug uptake did not display the same differences. In addition, co-spread samples of control lipid extracts with edelfosine added post extraction did not fully mimic the results obtained with lipid extracts from treated cells. Altogether these results indicate that edelfosine induces changes in membrane domain organization and that these changes depend on drug uptake. Our work also validates the use of monolayers derived from complex cell lipid extracts combined with Brewster angle microscopy, as a sensitive approach to distinguish between conditions associated with susceptibility or resistance to lysophosphatidylcholine analogues.
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Affiliation(s)
- Mark Mahadeo
- Department of Biological Sciences, Faculty of Science, University of Calgary, 2500 University Drive NW, Calgary, Alberta T2N 1N4, Canada
| | - Safia Nathoo
- Department of Biological Sciences, Faculty of Science, University of Calgary, 2500 University Drive NW, Calgary, Alberta T2N 1N4, Canada
| | - Suriakarthiga Ganesan
- Department of Biological Sciences, Faculty of Science, University of Calgary, 2500 University Drive NW, Calgary, Alberta T2N 1N4, Canada
| | - Michael Driedger
- Department of Biological Sciences, Faculty of Science, University of Calgary, 2500 University Drive NW, Calgary, Alberta T2N 1N4, Canada
| | - Vanina Zaremberg
- Department of Biological Sciences, Faculty of Science, University of Calgary, 2500 University Drive NW, Calgary, Alberta T2N 1N4, Canada.
| | - Elmar J Prenner
- Department of Biological Sciences, Faculty of Science, University of Calgary, 2500 University Drive NW, Calgary, Alberta T2N 1N4, Canada.
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Bahadur A, Cabana-Montenegro S, Aswal VK, Lage EV, Sandez-Macho I, Concheiro A, Alvarez-Lorenzo C, Bahadur P. NaCl-triggered self-assembly of hydrophilic poloxamine block copolymers. Int J Pharm 2015; 494:453-62. [PMID: 26315124 DOI: 10.1016/j.ijpharm.2015.08.058] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2015] [Revised: 08/18/2015] [Accepted: 08/20/2015] [Indexed: 12/22/2022]
Abstract
Tetronic 1307 (T1307) is a hydrophilic poloxamine (HLB>24) with a high molecular mass owing to its long PEO and PPO blocks. In spite of good biocompatibility, its use as a component of drug delivery systems is limited by its high critical micelle concentration (CMC) and temperature (CMT). The aim of this work was to elucidate whether the addition of NaCl or the combination of salts and temperature may bring T1307 micellization and gelling features into more practically useful values. Increasing NaCl concentration in the 0.154 M (isotonic) to 2M (hypertonic) range made the copolymer more hydrophobic and more prone to self-assemble into unimodal micelles, as observed by means of π-A isotherms, (1)H NMR, dynamic light scattering (DLS), small-angle neutron scattering (SANS), and pyrene fluorescence. The decrease in CMC and CMT observed for T1307 in 0.5 M NaCl medium (tolerable hypertonic solution), compared to water, notably favored the solubility of hydrophobic drugs such as curcumin and quercetin. Moreover, phase diagram, intrinsic viscosity and sol-to-gel transition were markedly affected by NaCl concentration. Overall, the strong dependence of T1307 self-assembly features on NaCl opens interesting possibilities for tuning the performance of T1307 as a component of nanocarriers and in situ gelling systems.
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Affiliation(s)
- Anita Bahadur
- Department of Zoology, PT Sarvajanik College of Science, Surat 395001 India
| | - Sonia Cabana-Montenegro
- Departamento de Farmacia y Tecnología Farmacéutica, Facultad de Farmacia, Universidad de Santiago de Compostela, 15782 Santiago de Compostela, Spain
| | - Vinod Kumar Aswal
- Solid State Physics Division, Bhabha Atomic Research Centre, Mumbai 400085, India
| | - Emilio V Lage
- Departamento de Química Física, Facultad de Farmacia, Universidad de Santiago de Compostela, 15782 Santiago de Compostela, Spain
| | - Isabel Sandez-Macho
- Departamento de Química Física, Facultad de Farmacia, Universidad de Santiago de Compostela, 15782 Santiago de Compostela, Spain
| | - Angel Concheiro
- Departamento de Farmacia y Tecnología Farmacéutica, Facultad de Farmacia, Universidad de Santiago de Compostela, 15782 Santiago de Compostela, Spain
| | - Carmen Alvarez-Lorenzo
- Departamento de Farmacia y Tecnología Farmacéutica, Facultad de Farmacia, Universidad de Santiago de Compostela, 15782 Santiago de Compostela, Spain.
| | - Pratap Bahadur
- Chemistry Department, Veer Narmad South Gujarat University, Surat 395001 India.
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Flasiński M, Hąc-Wydro K, Wydro P, Dynarowicz-Łątka P. Influence of platelet-activating factor, lyso-platelet-activating factor and edelfosine on Langmuir monolayers imitating plasma membranes of cell lines differing in susceptibility to anti-cancer treatment: the effect of plasmalogen level. J R Soc Interface 2014; 11:20131103. [PMID: 24694892 DOI: 10.1098/rsif.2013.1103] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Three structurally related but differing in biological activities single-chained ether phospholipids (PAF (platelet-activating factor) and lyso-PAF) and an anti-cancer drug (edelfosine (ED)) were investigated in Langmuir monolayers imitating natural membranes. The aim of the undertaken experiments was to study the influence of these lipids on monolayers mimicking plasma membranes of cell lines differing in susceptibility to the anti-cancer activity of ED, i.e. promyelocytic leukaemia cells (HL-60) and promyeloblastic leukaemia cells (K-562). As these cells differ essentially in the cholesterol/phospholipid ratio and plasmalogen concentration in the membrane, we have carried out systematic investigations in artificial systems of various compositions. The results for model leukaemia cell membrane were compared with data acquired for systems imitating normal leucocytes. Our results show that the level of plasmalogens significantly modulates the influence of the single-chained phospholipids on the investigated systems. The experiments confirmed also that the interactions of ether lipids with a model membrane of HL-60 cells (in biological tests sensitive to ED) have opposite character when compared with K-562, being resistant to ED. Moreover, the values of the parameters characterizing monolayers serving as membrane models (strength of interactions, monolayers fluidity and morphology) proved both sensitivity of these cells to ED and lack of their susceptibility towards PAF. Interestingly, it has been found that lyso-PAF, which is usually described as an inactive precursor of PAF, displays a stronger effect on HL-60 model membranes than ED.
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Affiliation(s)
- Michał Flasiński
- Faculty of Chemistry, Department of Environmental Chemistry, Jagiellonian University, , Gronostajowa 3, 30-387 Kraków, Poland
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Flasiński M, Wydro P, Broniatowski M. Lyso-phosphatidylcholines in Langmuir monolayers – Influence of chain length on physicochemical characteristics of single-chained lipids. J Colloid Interface Sci 2014; 418:20-30. [DOI: 10.1016/j.jcis.2013.12.003] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2013] [Revised: 11/29/2013] [Accepted: 12/01/2013] [Indexed: 01/23/2023]
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Hąc-Wydro K, Flasiński M, Wydro P, Dynarowicz-Łątka P. Towards the understanding of the behavior of single-chained ether phospholipids in model biomembranes: Interactions with phosphatidylethanolamines in Langmuir monolayers. Colloids Surf B Biointerfaces 2012; 97:162-70. [DOI: 10.1016/j.colsurfb.2012.04.023] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2012] [Revised: 03/08/2012] [Accepted: 04/17/2012] [Indexed: 11/24/2022]
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Flasiński M, Broniatowski M, Wydro P, Dynarowicz-Łątka P. Comparative Characteristics of Membrane-Active Single-Chained Ether Phospholipids: PAF and Lyso-PAF in Langmuir Monolayers. J Phys Chem B 2012; 116:3155-63. [DOI: 10.1021/jp2121092] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Michał Flasiński
- Faculty of Chemistry, Jagiellonian University, Ingardena 3, 30-060 Kraków, Poland
| | - Marcin Broniatowski
- Faculty of Chemistry, Jagiellonian University, Ingardena 3, 30-060 Kraków, Poland
| | - Paweł Wydro
- Faculty of Chemistry, Jagiellonian University, Ingardena 3, 30-060 Kraków, Poland
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Hąc-Wydro K, Dynarowicz-Łątka P. Searching for the role of membrane sphingolipids in selectivity of antitumor ether lipid–edelfosine. Colloids Surf B Biointerfaces 2010; 81:492-7. [DOI: 10.1016/j.colsurfb.2010.07.045] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2010] [Revised: 07/16/2010] [Accepted: 07/21/2010] [Indexed: 10/19/2022]
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Effect of edelfosine on tumor and normal cells model membranes--a comparative study. Colloids Surf B Biointerfaces 2009; 76:366-9. [PMID: 19896813 DOI: 10.1016/j.colsurfb.2009.10.012] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2009] [Revised: 09/25/2009] [Accepted: 10/08/2009] [Indexed: 11/21/2022]
Abstract
This work is aimed at comparing the effect of edelfosine (Ed) on normal and tumor cell membrane imitated by the Langmuir monolayers prepared from cholesterol and phosphatidylcholines. To keep the differences in the fluidity of these membranes, model membrane of normal cell has been composed from saturated phospholipid (DPPC) and contained a higher proportion of cholesterol (cholesterol:DPPC=0.67) than tumor cell model membranes prepared from unsaturated phosphatidylcholine (cholesterol:POPC=0.25). The results proved that the incorporation of edelfosine modifies the organization and interactions between molecules in both model systems. The interactions in cholesterol/DPPC/edelfosine monolayers are stronger than in cholesterol/DPPC film. On the other hand, the interactions in cholesterol/POPC/edelfosine system are weaker than in cholesterol/POPC monolayer, thus the incorporation of edelfosine is, from thermodynamical point of view, unfavorable for binary cholesterol/POPC monolayer. Edelfosine has been found to increase the fluidity of model membranes, however, at a lower concentration (up to 5% of edelfosine in model system) this compound affects only the condensation of tumor cell model membrane, while practically does not modify the organization of normal model system. It has been suggested that edelfosine inserts into tumor cellular membranes more easily than into normal cell membrane and cholesterol/edelfosine interactions determine the interactions between molecules in the investigated mixed monolayers.
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Więcek A, Dynarowicz-Łątka P, Vila-Romeu N, Nieto-Suarez M, Flasiński M. Interactions between an anticancer drug – edelfosine – and DPPC in Langmuir monolayers. Colloids Surf A Physicochem Eng Asp 2008. [DOI: 10.1016/j.colsurfa.2007.11.026] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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