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Janas T, Sapoń K, Janas T. Selection of bifunctional RNAs with specificity for arginine and lipid membranes. FEBS Lett 2024; 598:1061-1079. [PMID: 38649155 DOI: 10.1002/1873-3468.14880] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2023] [Revised: 02/23/2024] [Accepted: 03/20/2024] [Indexed: 04/25/2024]
Abstract
The molecular mechanisms of selective RNA loading into exosomes and other extracellular vesicles are not yet completely understood. In order to show that a pool of RNA sequences binds both the amino acid arginine and lipid membranes, we constructed a bifunctional RNA 10Arg aptamer specific for arginine and lipid vesicles. The preference of RNA 10Arg for lipid rafts was visualized and confirmed using FRET microscopy in neuroblastoma cells. The selection-amplification (SELEX) method using a doped (with the other three nucleotides) pool of RNA 10Arg sequences yielded several RNA 10Arg(D) sequences, and the affinities of these RNAs both to arginine and liposomes are improved in comparison to pre-doped RNA. Generation of these bispecific aptamers supports the hypothesis that an RNA molecule can bind both to RNA-binding proteins (RBPs) through arginine within the RBP-binding site and to membrane lipid rafts, thus facilitating RNA loading into exosomes and other extracellular vesicles.
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Affiliation(s)
- Teresa Janas
- Institute of Biology, University of Opole, Poland
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2
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Walter M, Neubacher M, Fiedler B. Using thermokinetic methods to enhance properties of epoxy resins with amino acids as biobased curing agents by achieving full crosslinking. Sci Rep 2024; 14:4367. [PMID: 38388744 PMCID: PMC10883939 DOI: 10.1038/s41598-024-54484-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2023] [Accepted: 02/13/2024] [Indexed: 02/24/2024] Open
Abstract
Fibre-reinforced polymers (FRPs) are used in numerous industrial sectors and contribute to reducing CO2 emissions due to their outstanding properties in lightweight design. However, sustainable alternatives must be developed since the matrix polymers utilised contain substances hazardous to health and the environment. In widely used epoxy resins, the curing agents are mainly critical. Using biomolecules instead of synthetic curing agents can significantly reduce composites' toxicity and petrol-based carbon content. This study considerably exceeds the thermo-mechanical properties of epoxies cured with amino acids described in the literature until now. It demonstrates competitive or even better properties than state-of-the-art epoxies cured with petrol-based amine curing agents. For instance, the tensile strength of arginine-cured epoxy is more than twice as high as reported before and 13.5% higher compared to the petrol-based reference. At the same time, a high elongation at break of over 6% was accomplished, making these polymers suitable as matrix materials in FRPs. Furthermore, the glass transition onset of up to 130 °C is sufficiently high for many applications. The key to success is the development of individual curing profiles based on thermokinetic analysis. The work provides the development and analysis of several biomolecule-cured epoxies with promising property spectra.
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Affiliation(s)
- Melissa Walter
- Institute of Polymers and Composites, Hamburg University of Technology, Hamburg, Germany.
| | - Marcel Neubacher
- Institute of Polymers and Composites, Hamburg University of Technology, Hamburg, Germany
| | - Bodo Fiedler
- Institute of Polymers and Composites, Hamburg University of Technology, Hamburg, Germany
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3
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Interaction of guanidinium and ammonium cations with phosphatidylcholine and phosphatidylserine lipid bilayers - Calorimetric, spectroscopic and molecular dynamics simulations study. BIOCHIMICA ET BIOPHYSICA ACTA. BIOMEMBRANES 2023; 1865:184122. [PMID: 36739930 DOI: 10.1016/j.bbamem.2023.184122] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/23/2022] [Revised: 01/10/2023] [Accepted: 01/24/2023] [Indexed: 02/05/2023]
Abstract
The ability of arginine-rich peptides to cross the lipid bilayer and enter cytoplasm, unlike their lysine-based analogues, is intensively studied in the context of cell-penetrating peptides. Although the experiments have not yet reconstructed their internalization mechanism, the computational studies have shown that the type or charge of lipid polar groups is one of the crucial factors in their translocation. In order to gain more detailed insight into the interaction of guanidinium (Gdm+) and ammonium (NH4+) cations, as important building blocks in arginine and lysine amino acids, with lipid bilayers, we conducted the experimental and computational study that tackles this phenomenon. The adsorption of Gdm+ and NH4+ on lipid bilayers prepared from a zwitterionic (DPPC) and an anionic (DPPS) lipid was examined by thermoanalytic and spectroscopic techniques. Using temperature-dependent UV-Vis spectroscopy and DSC calorimetry we determined the impact of Gdm+ and NH4+ on the thermotropic properties of lipid bilayers. FTIR data, along with molecular dynamics simulations, unraveled the molecular-level details on the nature of their interactions, showing the proton transfer between NH4+ and DPPS, but not between Gdm+ and DPPS. The findings originated from this work imply that Gdm+ and NH4+ form qualitatively different interactions with lipids of different charge which is reflected in the physico-chemical interactions that arginine-and lysine-based peptides establish at a complex and chemically heterogeneous environment such as the biological membrane.
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Barragán-Cárdenas A, Insuasty-Cepeda DS, Vargas-Casanova Y, López-Meza JE, Parra-Giraldo CM, Fierro-Medina R, Rivera-Monroy ZJ, García-Castañeda JE. Changes in Length and Positive Charge of Palindromic Sequence RWQWRWQWR Enhance Cytotoxic Activity against Breast Cancer Cell Lines. ACS OMEGA 2023; 8:2712-2722. [PMID: 36687035 PMCID: PMC9850729 DOI: 10.1021/acsomega.2c07336] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/15/2022] [Accepted: 12/21/2022] [Indexed: 06/17/2023]
Abstract
Breast cancer is one of the main causes of premature death in women; current treatments have low selectivity, generating strong physical and psychological sequelae. The palindromic peptide R-1-R (RWQWRWQWR) has cytotoxic activity against different cell lines derived from cancer and selectivity against noncancerous cells. To determine if changes in the charge/length of this peptide increase its activity, six peptides were obtained by SPPS, three of them with addition of Arg at the N, C-terminal or both and three with deletion of Arg at the N, C-terminal or both. The cytotoxic and selective activities were evaluated against MCF-7, MDA-MB-231, and MCF-12 cell lines and fibroblast primary cell culture, evidencing that the RR-1-R peptide with the inclusion of Arg in the N-terminal end maintained selectivity and increased cytotoxicity against lines derived from breast cancer. The effect of this addition regarding the type of induced cell death was evaluated by flow cytometry, showing very low rates of necrosis and a significant majority of apoptotic events with activation of both Caspase 8 and Caspase 9. This work allowed us to find a modification that generates a peptide with greater cytotoxic effects and can be considered a promising molecule for other approaches to improve anticancer peptides.
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Affiliation(s)
| | | | - Yerly Vargas-Casanova
- Microbiology
Department, Pontificia Universidad Javeriana, Ak. 7 #40-62, Bogotá 110231, Colombia
| | - Joel Edmundo López-Meza
- Multidisciplinary
Centre for Studies in Biotechnology, Universidad
Michoacana de San Nicolás de Hidalgo, Km 9.5 Carretera Morelia, Zinapécuaro, Morelia 58030, Mexico
| | | | - Ricardo Fierro-Medina
- Chemistry
Department, Universidad Nacional de Colombia, Carrera 45 No. 26-85, Building 451, Bogota 111321, Colombia
| | - Zuly Jenny Rivera-Monroy
- Chemistry
Department, Universidad Nacional de Colombia, Carrera 45 No. 26-85, Building 451, Bogota 111321, Colombia
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5
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Frias M, Cejas J, Rosa A, Disalvo E. Relevance of water in biological membranes. Chem Phys 2022. [DOI: 10.1016/j.chemphys.2022.111784] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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6
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Disalvo EA, Rosa AS, Cejas JP, Frias MDLA. Water as a Link between Membrane and Colloidal Theories for Cells. Molecules 2022; 27:4994. [PMID: 35956945 PMCID: PMC9370763 DOI: 10.3390/molecules27154994] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2022] [Revised: 08/01/2022] [Accepted: 08/01/2022] [Indexed: 11/16/2022] Open
Abstract
This review is an attempt to incorporate water as a structural and thermodynamic component of biomembranes. With this purpose, the consideration of the membrane interphase as a bidimensional hydrated polar head group solution, coupled to the hydrocarbon region allows for the reconciliation of two theories on cells in dispute today: one considering the membrane as an essential part in terms of compartmentalization, and another in which lipid membranes are not necessary and cells can be treated as a colloidal system. The criterium followed is to describe the membrane state as an open, non-autonomous and responsive system using the approach of Thermodynamic of Irreversible Processes. The concept of an open/non-autonomous membrane system allows for the visualization of the interrelationship between metabolic events and membrane polymorphic changes. Therefore, the Association Induction Hypothesis (AIH) and lipid properties interplay should consider hydration in terms of free energy modulated by water activity and surface (lateral) pressure. Water in restricted regions at the lipid interphase has thermodynamic properties that explain the role of H-bonding networks in the propagation of events between membrane and cytoplasm that appears to be relevant in the context of crowded systems.
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Affiliation(s)
- E. Anibal Disalvo
- Applied Biophysics and Food Research Center (Centro de Investigaciones en Biofisica Aplicada y Alimentos, CIBAAL, Laboratory of Biointerphases and Biomimetic Systems, National University of Santiago del Estero and CONICET), RN 9-Km 1125, Santiago del Estero 4206, Argentina
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Disalvo A, Frias MA. Surface Characterization of Lipid Biomimetic Systems. MEMBRANES 2021; 11:membranes11110821. [PMID: 34832050 PMCID: PMC8621788 DOI: 10.3390/membranes11110821] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Revised: 10/21/2021] [Accepted: 10/21/2021] [Indexed: 11/16/2022]
Abstract
Zeta potential and dipole potential measures are direct operational methodologies to determine the adsorption, insertion and penetration of ions, amphipathic and neutral compounds into the membranes of cells and model systems. From these results, the contribution of charged and dipole groups can be deduced. However, although each method may give apparent affinity or binding constants, care should be taken to interpret them in terms of physical meaning because they are not independent properties. On the base of a recent model in which the lipid bilayer is considered as composed by two interphase regions at each side of the hydrocarbon core, this review describes how dipole potential and zeta potential are correlated due to water reorganization. From this analysis, considering that in a cell the interphase region the membrane extends to the cell interior or overlaps with the interphase region of another supramolecular structure, the correlation of dipole and electrostatic forces can be taken as responsible of the propagation of perturbations between membrane and cytoplasm and vice versa. Thus, this picture gives the membrane a responsive character in addition to that of a selective permeability barrier when integrated to a complex system.
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Frias MA, Disalvo EA. Breakdown of classical paradigms in relation to membrane structure and functions. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2020; 1863:183512. [PMID: 33202248 DOI: 10.1016/j.bbamem.2020.183512] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 09/07/2020] [Revised: 11/11/2020] [Accepted: 11/12/2020] [Indexed: 01/10/2023]
Abstract
Updates of the mosaic fluid membrane model implicitly sustain the paradigms that bilayers are closed systems conserving a state of fluidity and behaving as a dielectric slab. All of them are a consequence of disregarding water as part of the membrane structure and its essential role in the thermodynamics and kinetics of membrane response to bioeffectors. A correlation of the thermodynamic properties with the structural features of water makes possible to introduce the lipid membrane as a responsive structure due to the relaxation of water rearrangements in the kinetics of bioeffectors' interactions. This analysis concludes that the lipid membranes are open systems and, according to thermodynamic of irreversible formalism, bilayers and monolayers can be reasonable compared under controlled conditions. The inclusion of water in the complex structure makes feasible to reconsider the concept of dielectric slab and fluidity.
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Affiliation(s)
- M A Frias
- Applied Biophysics and Food Research Center, CIBAAL-UNSE-CONICET, Santiago del Estero, Argentina
| | - E A Disalvo
- Applied Biophysics and Food Research Center, CIBAAL-UNSE-CONICET, Santiago del Estero, Argentina.
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9
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Ethyl (S)-2-Benzamido-5-[(4,6-dimethylpyrimidin-2-yl)amino]pentanoate. MOLBANK 2020. [DOI: 10.3390/m1166] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Pyrimidines are compounds with a wide range of biological activities, and the synthesis of pyrimidine derivatives—useful in chemical and medicinal applications—is important in medicinal chemistry. This work shows the synthesis under microwave irradiation of the novel compound ethyl (S)-2-benzamido-5-[(4,6-dimethylpyrimidin-2-yl)amino]pentanoate (3) from (S)-N-α-benzoyl-l-arginine ethyl ester hydrochloride (1) and acetylacetone (2). Compound 3 was easily purified, obtained in moderate yield (70%), and fully characterized by UV-Vis, FTIR-ATR spectroscopy, 1H-NMR, 13C-NMR, HRMS, and EI-MS.
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10
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Rosa AS, Disalvo EA, Frias MA. Water Behavior at the Phase Transition of Phospholipid Matrixes Assessed by FTIR Spectroscopy. J Phys Chem B 2020; 124:6236-6244. [DOI: 10.1021/acs.jpcb.0c03719] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- A. S. Rosa
- Applied Biophysics and Food Research Center, National University of Santiago del Estero (CIBAAL-UNSE-CONICET), G4200 Santiago del Estero, Argentina
| | - E. A. Disalvo
- Applied Biophysics and Food Research Center, National University of Santiago del Estero (CIBAAL-UNSE-CONICET), G4200 Santiago del Estero, Argentina
| | - M. A. Frias
- Applied Biophysics and Food Research Center, National University of Santiago del Estero (CIBAAL-UNSE-CONICET), G4200 Santiago del Estero, Argentina
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11
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Luca S, Seal P, Parekh HS, Tupally KR, Smith SC. Cell Membrane Penetration without Pore Formation: Chameleonic Properties of Dendrimers in Response to Hydrophobic and Hydrophilic Environments. ADVANCED THEORY AND SIMULATIONS 2020. [DOI: 10.1002/adts.201900152] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Sergio Luca
- Integrated Materials Design LaboratoryDepartment of Applied MathematicsResearch School of PhysicsAustralian National University Acton ACT 2601 Australia
| | - Prasenjit Seal
- Department of ChemistryUniversity of Helsinki P.O. Box 55 (A.I. Virtasen aukio 1) Helsinki 00014 Finland
| | - Harendra S. Parekh
- School of PharmacyThe University of Queensland Brisbane QLD 4072 Australia
| | | | - Sean C. Smith
- Integrated Materials Design LaboratoryDepartment of Applied MathematicsResearch School of PhysicsAustralian National University Acton ACT 2601 Australia
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12
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Arias J, Díaz S, Ben Altabef A, Dupuy F. Interaction of cysteine and its derivatives with monolayers of dipalmitoylphosphatidylcholine. Colloids Surf B Biointerfaces 2019; 184:110548. [DOI: 10.1016/j.colsurfb.2019.110548] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2019] [Revised: 08/16/2019] [Accepted: 10/02/2019] [Indexed: 12/18/2022]
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13
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Rosa AS, Cejas JP, Disalvo EA, Frías MA. Correlation between the hydration of acyl chains and phosphate groups in lipid bilayers: Effect of phase state, head group, chain length, double bonds and carbonyl groups. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2019; 1861:1197-1203. [PMID: 30926364 DOI: 10.1016/j.bbamem.2019.03.018] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/06/2018] [Revised: 03/24/2019] [Accepted: 03/25/2019] [Indexed: 01/17/2023]
Abstract
This paper demonstrates by means of FTIR/ATR analysis that water molecules intercalate at different extents in the acyl chain region of lipid membranes in correlation with the hydration of the phosphate groups. This correlation is sensible to the chain length, the presence of double bonds and the phase state of the lipid membrane. The presence of carbonyl groups CO modifies the profile of hydration of the two regions as observed from the comparison of DMPC and 14:0 Diether PC. The different water populations in lipid interphases would give arrangements with different free energy states that could drive the interaction of biological effectors with membranes.
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Affiliation(s)
- Antonio S Rosa
- Applied Biophysics and Food Research Center (Centro de Investigaciones en Biofísica Aplicada y Alimentos, CIBAAL), National University of Santiago del Estero and CONICET, RN 9 - Km 1125, 4206 Santiago del Estero, Argentina
| | - Jimena P Cejas
- Applied Biophysics and Food Research Center (Centro de Investigaciones en Biofísica Aplicada y Alimentos, CIBAAL), National University of Santiago del Estero and CONICET, RN 9 - Km 1125, 4206 Santiago del Estero, Argentina
| | - Edgardo A Disalvo
- Applied Biophysics and Food Research Center (Centro de Investigaciones en Biofísica Aplicada y Alimentos, CIBAAL), National University of Santiago del Estero and CONICET, RN 9 - Km 1125, 4206 Santiago del Estero, Argentina
| | - María A Frías
- Applied Biophysics and Food Research Center (Centro de Investigaciones en Biofísica Aplicada y Alimentos, CIBAAL), National University of Santiago del Estero and CONICET, RN 9 - Km 1125, 4206 Santiago del Estero, Argentina.
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Gomes B, Augusto MT, Felício MR, Hollmann A, Franco OL, Gonçalves S, Santos NC. Designing improved active peptides for therapeutic approaches against infectious diseases. Biotechnol Adv 2018; 36:415-429. [PMID: 29330093 DOI: 10.1016/j.biotechadv.2018.01.004] [Citation(s) in RCA: 106] [Impact Index Per Article: 17.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2017] [Revised: 12/13/2017] [Accepted: 01/06/2018] [Indexed: 12/25/2022]
Abstract
Infectious diseases are one of the main causes of human morbidity and mortality. In the last few decades, pathogenic microorganisms' resistance to conventional drugs has been increasing, and it is now pinpointed as a major worldwide health concern. The need to search for new therapeutic options, as well as improved treatment outcomes, has therefore increased significantly, with biologically active peptides representing a new alternative. A substantial research effort is being dedicated towards their development, especially due to improved biocompatibility and target selectivity. However, the inherent limitations of peptide drugs are restricting their application. In this review, we summarize the current status of peptide drug development, focusing on antiviral and antimicrobial peptide activities, highlighting the design improvements needed, and those already being used, to overcome the drawbacks of the therapeutic application of biologically active peptides.
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Affiliation(s)
- Bárbara Gomes
- Instituto de Medicina Molecular, Faculdade de Medicina, Universidade de Lisboa, Avenida Professor Egas Moniz, 1649-028 Lisboa, Portugal
| | - Marcelo T Augusto
- Instituto de Medicina Molecular, Faculdade de Medicina, Universidade de Lisboa, Avenida Professor Egas Moniz, 1649-028 Lisboa, Portugal
| | - Mário R Felício
- Instituto de Medicina Molecular, Faculdade de Medicina, Universidade de Lisboa, Avenida Professor Egas Moniz, 1649-028 Lisboa, Portugal
| | - Axel Hollmann
- Instituto de Medicina Molecular, Faculdade de Medicina, Universidade de Lisboa, Avenida Professor Egas Moniz, 1649-028 Lisboa, Portugal; Laboratory of Molecular Microbiology, Institute of Basic and Applied Microbiology, National University of Quilmes, Bernal, Buenos Aires, Argentina; Laboratory of Biointerfaces and Biomimetic Systems, CITSE, National University of Santiago del Estero-CONICET, Santiago del Estero, Argentina
| | - Octávio L Franco
- Centro de Análises Proteômicas e Bioquímicas, Pós-graduação em Ciências Genômicas e Biotecnologia, Universidade Católica de Brasília, Brasília, DF, Brazil; Programa de Pós-Graduação em Patologia Molecular, Universidade de Brasília, Brasília, DF, Brazil; S-Inova Biotech, Pós-graduação em Biotecnologia, Universidade Católica Dom Bosco, Campo Grande, MS, Brazil
| | - Sónia Gonçalves
- Instituto de Medicina Molecular, Faculdade de Medicina, Universidade de Lisboa, Avenida Professor Egas Moniz, 1649-028 Lisboa, Portugal
| | - Nuno C Santos
- Instituto de Medicina Molecular, Faculdade de Medicina, Universidade de Lisboa, Avenida Professor Egas Moniz, 1649-028 Lisboa, Portugal.
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Ishigami T, Tauchi A, Suga K, Umakoshi H. Effect of Boundary Edge in DOPC/DPPC/Cholesterol Liposomes on Acceleration of l-Histidine Preferential Adsorption. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2016; 32:6011-6019. [PMID: 27232976 DOI: 10.1021/acs.langmuir.5b04626] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
In order to investigate the interaction of hydrophilic molecules with liposomal membranes, we employed 1-(4-(trimethylamino)phenyl)-6-phenyl-1,3,5-hexatriene and 1,2-dioleoyl-sn-glycero-3-phosphoethanolamine-N-(5-dimethylamino-1-naphthalenesulfonyl) as fluorescent probes to monitor the surface regions of the membrane, and the results for various liposomes were plotted in correlation diagrams. According to the formation of a variety of phase states, different tendencies of decreasing surface hydrophobicity were observed in the liposomes that were modified with high concentrations of cholesterol or in the liposomes that were composed of ternary components. These liposomes, with hydrophobic surfaces, also showed preferential adsorption of l-histidine (l-His), and the hydrophobicity of the liposomal membrane at the surface changed during l-His adsorption regardless of the initial liposomal properties. Furthermore, we revealed that accelerated adsorption of l-His and preferential binding was induced in ternary liposomes forming boundaries between two separate phases.
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Affiliation(s)
- Takaaki Ishigami
- Division of Chemical Engineering, Graduate School of Engineering Science, Osaka University , 1-3 Machikaneyama-cho, Toyonaka, Osaka 560-8531, Japan
| | - Atsushi Tauchi
- Division of Chemical Engineering, Graduate School of Engineering Science, Osaka University , 1-3 Machikaneyama-cho, Toyonaka, Osaka 560-8531, Japan
| | - Keishi Suga
- Division of Chemical Engineering, Graduate School of Engineering Science, Osaka University , 1-3 Machikaneyama-cho, Toyonaka, Osaka 560-8531, Japan
| | - Hiroshi Umakoshi
- Division of Chemical Engineering, Graduate School of Engineering Science, Osaka University , 1-3 Machikaneyama-cho, Toyonaka, Osaka 560-8531, Japan
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Ishigami T, Suga K, Umakoshi H. Chiral Recognition of L-Amino Acids on Liposomes Prepared with L-Phospholipid. ACS APPLIED MATERIALS & INTERFACES 2015; 7:21065-72. [PMID: 26339952 DOI: 10.1021/acsami.5b07198] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
In this study, we demonstrated that liposomes composed of 1,2-dipalmitoyl-sn-glycero-3-phosphocholine (DPPC) can recognize several l-amino acids, but not their d-enantiomers, by analyzing their adsorptive behavior and using circular dichroism spectroscopy. Changes in liposomal membrane properties, determined based on fluorescent probe analysis and differential scanning calorimetry, were induced by l-amino acid binding. UV resonance Raman spectroscopy analysis suggested that the chiral recognition was mediated by electrostatic, hydrophobic, and hydrogen bond interactions, where the recognition site could therefore be constructed on the DPPC membrane. Our findings clearly indicate the potential function of liposomes in asymmetric recognition.
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Affiliation(s)
- Takaaki Ishigami
- Division of Chemical Engineering, Graduate School of Engineering Science, Osaka University , 1-3 Machikaneyamacho, Toyonaka, Osaka 560-8531, Japan
| | - Keishi Suga
- Division of Chemical Engineering, Graduate School of Engineering Science, Osaka University , 1-3 Machikaneyamacho, Toyonaka, Osaka 560-8531, Japan
| | - Hiroshi Umakoshi
- Division of Chemical Engineering, Graduate School of Engineering Science, Osaka University , 1-3 Machikaneyamacho, Toyonaka, Osaka 560-8531, Japan
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17
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Disalvo E, Pinto O, Martini M, Bouchet A, Hollmann A, Frías M. Functional role of water in membranes updated: A tribute to Träuble. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2015; 1848:1552-62. [DOI: 10.1016/j.bbamem.2015.03.031] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/08/2014] [Revised: 03/20/2015] [Accepted: 03/26/2015] [Indexed: 11/30/2022]
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18
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Ionic strength and composition govern the elasticity of biological membranes. A study of model DMPC bilayers by force- and transmission IR spectroscopy. Chem Phys Lipids 2014; 186:17-29. [PMID: 25447291 DOI: 10.1016/j.chemphyslip.2014.11.001] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2014] [Revised: 11/05/2014] [Accepted: 11/11/2014] [Indexed: 12/15/2022]
Abstract
Infrared (IR) spectroscopy was used to quantify the ion mixture effect of seawater (SW), particularly the contribution of Mg(2+) and Ca(2+) as dominant divalent cations, on the thermotropic phase behaviour of 1,2-dimyristoyl-sn-glycero-3-posphocholine (DMPC) bilayers. The changed character of the main transition at 24 °C from sharp to gradual in films and the 1 °C shift of the main transition temperature in dispersions reflect the interactions of lipid headgroups with the ions in SW. Force spectroscopy was used to quantify the nanomechanical hardness of a DMPC supported lipid bilayer (SLB). Considering the electrostatic and ion binding equilibrium contributions while systematically probing the SLB in various salt solutions, we showed that ionic strength had a decisive influence on its nanomechanics. The mechanical hardness of DMPC SLBs in the liquid crystalline phase linearly increases with the increasing fraction of all ion-bound lipids in a series of monovalent salt solutions. It also linearly increases in the gel phase but almost three times faster (the corresponding slopes are 4.9 nN/100 mM and 13.32 nN/100 mM, respectively). We also showed that in the presence of divalent ions (Ca(2+) and Mg(2+)) the bilayer mechanical hardness was unproportionally increased, and that was accompanied with the decrease of Na(+) ion and increase of Cl(-) ion bound lipids. The underlying process is a cooperative and competitive ion binding in both the gel and the liquid crystalline phase. Bilayer hardness thus turned out to be very sensitive to ionic strength as well as to ionic composition of the surrounding medium. In particular, the indicated correlation helped us to emphasize the colligative properties of SW as a naturally occurring complex ion mixture.
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Disalvo EA, Martini MF, Bouchet AM, Hollmann A, Frías MA. Structural and thermodynamic properties of water-membrane interphases: significance for peptide/membrane interactions. Adv Colloid Interface Sci 2014; 211:17-33. [PMID: 25085854 DOI: 10.1016/j.cis.2014.05.002] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2013] [Revised: 05/16/2014] [Accepted: 05/16/2014] [Indexed: 12/28/2022]
Abstract
Water appears as a common intermediary in the mechanisms of interaction of proteins and polypeptides with membranes of different lipid composition. In this review, how water modulates the interaction of peptides and proteins with lipid membranes is discussed by correlating the thermodynamic response and the structural changes of water at the membrane interphases. The thermodynamic properties of the lipid-protein interaction are governed by changes in the water activity of monolayers of different lipid composition according to the lateral surface pressure. In this context, different water populations can be characterized below and above the phase transition temperature in relation to the CH₂ conformers' states in the acyl chains. According to water species present at the interphase, lipid membrane acts as a water state regulator, which determines the interfacial water domains in the surface. It is proposed that those domains are formed by the contact between lipids themselves and between lipids and the water phase, which are needed to trigger adsorption-insertion processes. The water domains are essential to maintain functional dynamical properties and are formed by water beyond the hydration shell of the lipid head groups. These confined water domains probably carries information in local units in relation to the lipid composition thus accounting for the link between lipidomics and aquaomics. The analysis of these results contributes to a new insight of the lipid bilayer as a non-autonomous, responsive (reactive) structure that correlates with the dynamical properties of a living system.
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Affiliation(s)
- E A Disalvo
- Centro de Investigaciones y Transferencia Santiago del Estero (CITSE), (CONICET-UNSE), Laboratorio de Biointerfases y Sistemas Biomiméticos, Laboratorios Centrales - Ala Norte, Ruta Nacional 9, Km 1125 - Villa El Zanjón, CP 4206 Santiago del Estero, Argentina.
| | - M F Martini
- Department of Pharmaceutical Technology, Universidad de Buenos Aires, Buenos Aires, Argentina and CONICET
| | - A M Bouchet
- Centro de Investigaciones y Transferencia Santiago del Estero (CITSE), (CONICET-UNSE), Laboratorio de Biointerfases y Sistemas Biomiméticos, Laboratorios Centrales - Ala Norte, Ruta Nacional 9, Km 1125 - Villa El Zanjón, CP 4206 Santiago del Estero, Argentina
| | - A Hollmann
- Centro de Investigaciones y Transferencia Santiago del Estero (CITSE), (CONICET-UNSE), Laboratorio de Biointerfases y Sistemas Biomiméticos, Laboratorios Centrales - Ala Norte, Ruta Nacional 9, Km 1125 - Villa El Zanjón, CP 4206 Santiago del Estero, Argentina
| | - M A Frías
- Centro de Investigaciones y Transferencia Santiago del Estero (CITSE), (CONICET-UNSE), Laboratorio de Biointerfases y Sistemas Biomiméticos, Laboratorios Centrales - Ala Norte, Ruta Nacional 9, Km 1125 - Villa El Zanjón, CP 4206 Santiago del Estero, Argentina
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Disalvo E, Bouchet A. Electrophoretic mobility and zeta potential of liposomes due to arginine and polyarginine adsorption. Colloids Surf A Physicochem Eng Asp 2014. [DOI: 10.1016/j.colsurfa.2012.09.012] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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21
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Disalvo EA, Bouchet AM, Frias MA. Connected and isolated CH2 populations in acyl chains and its relation to pockets of confined water in lipid membranes as observed by FTIR spectrometry. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2013; 1828:1683-9. [PMID: 23500348 DOI: 10.1016/j.bbamem.2013.02.007] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/12/2012] [Revised: 01/15/2013] [Accepted: 02/13/2013] [Indexed: 11/18/2022]
Abstract
Analysis of the band corresponding to the frequency of vibrational symmetric stretching mode of methylene groups in the lipid acyl chains and the bands of water below and above the phase transition of different lipids by Fourier transform infrared spectroscopy gives strong support to the formation of confined water pockets in between the lipid acyl chains. Our measures and analysis consolidate the mechanism early proposed by Traüble, in the sense that water is present in kinks formed by trans-gauche isomers along the hydrocarbon tails. The formation of these regions depends on the acyl lipid composition, which determines the presence of different populations of water species, characterized by its degree of H bond coordination in fluid saturated or unsaturated lipids. The free energy excess due to the reinforcement of the water structure along few water molecules in the adjacencies of exposed membrane residues near the phase transition is a reasonable base to explain the insertion and translocation of polar peptides and amino acid residues through the biomembrane on thermodynamic and structural grounds.
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Affiliation(s)
- E A Disalvo
- Universidad Nacional de Santiago del Estero, Santiago del Estero, Argentina.
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22
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Methylation of ethanolamine groups in phosphoethanolamines is relevant for L-arginine insertion in lipid membranes. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2012; 1818:1395-401. [DOI: 10.1016/j.bbamem.2012.02.011] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/13/2011] [Revised: 01/31/2012] [Accepted: 02/08/2012] [Indexed: 11/21/2022]
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Herrera FE, Bouchet A, Lairion F, Disalvo EA, Pantano S. Molecular Dynamics Study of the Interaction of Arginine with Phosphatidylcholine and Phosphatidylethanolamine Bilayers. J Phys Chem B 2012; 116:4476-83. [DOI: 10.1021/jp2096357] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Fernando E. Herrera
- Institut Pasteur de Montevideo, Calle Mataojo 2020. CP 11400 Montevideo,
Uruguay
- Consejo Nacional
de Investigaciones
Científicas y Técnicas (CONICET), Departamento de Física,
Facultad de Bioquímica y Ciencias Biológicas, Universidad Nacional del Litoral, C.C. 242, Ciudad
Universitaria, C.P. S3000ZAA, Santa Fe, Argentina
| | - Ana Bouchet
- Laboratorio de Fisicoquímica
de Membranas Lipídicas, Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, Junín 956 2°P
(1113), Buenos Aires, Argentina
| | - Fabiana Lairion
- Laboratorio de Fisicoquímica
de Membranas Lipídicas, Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, Junín 956 2°P
(1113), Buenos Aires, Argentina
| | - E. Aníbal Disalvo
- Laboratorio de Fisicoquímica
de Membranas Lipídicas, Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, Junín 956 2°P
(1113), Buenos Aires, Argentina
| | - Sergio Pantano
- Institut Pasteur de Montevideo, Calle Mataojo 2020. CP 11400 Montevideo,
Uruguay
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Penetration behaviour of alkylbetainate chlorides into lipid monolayers. Colloids Surf B Biointerfaces 2011; 86:176-80. [DOI: 10.1016/j.colsurfb.2011.03.039] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2011] [Revised: 03/21/2011] [Accepted: 03/29/2011] [Indexed: 11/18/2022]
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Ohtake S, Arakawa T, Koyama AH. Arginine as a synergistic virucidal agent. Molecules 2010; 15:1408-24. [PMID: 20335989 PMCID: PMC6257253 DOI: 10.3390/molecules15031408] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2010] [Revised: 02/11/2010] [Accepted: 03/04/2010] [Indexed: 11/16/2022] Open
Abstract
Development of effective and environmentally friendly disinfectants, or virucidal agents, should help prevent the spread of infectious diseases through human contact with contaminated surfaces. These agents may also be used, if non-toxic to cells and tissues, as chemotherapeutic agents against infectious diseases. We have shown that arginine has a synergistic effect with a variety of virucidal conditions, namely acidic pH and high temperature, on virus inactivation. All of these treatments are effective, however, at the expense of toxicity. The ability of arginine to lower the effective threshold of these parameters may reduce the occurrence of potential toxic side effects. While it is clear that arginine can be safely used, the mechanism of its virus inactivation has not yet been elucidated. Here we examine the damages that viruses suffer from various physical and chemical stresses and their relations to virus inactivation and aggregation. Based on the relationship between the stress-induced structural damages and the infectivity of a virus, we will propose several plausible mechanisms describing the effects of arginine on virus inactivation using the current knowledge of aqueous arginine solution properties.
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Affiliation(s)
- Satoshi Ohtake
- Aridis Pharmaceuticals, 5941 Optical Court, San Jose, CA 95138, USA
| | - Tsutomu Arakawa
- Alliance Protein Laboratories, 3957 Corte Cancion, Thousand Oaks, CA 91360, USA
| | - A. Hajime Koyama
- Division of Virology, Department of Cellular and Molecular Medicine, Wakayama Medical University Graduate School of Medicine, Wakayama 641-8509, Japan
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