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Socrier L, Bail C, Ackermann E, Beresowski AK, Ahadi S, Werz DB, Steinem C. The Interaction of Gb 3 Glycosphingolipids with ld and lo Phase Lipids in Lipid Monolayers Is a Function of Their Fatty Acids. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:5874-5882. [PMID: 35439015 DOI: 10.1021/acs.langmuir.2c00497] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
The glycosphingolipid Gb3 is a specific receptor of the bacterial Shiga toxin (STx). Binding of STx to Gb3 is a prerequisite for its internalization into the host cells, and the ceramide's fatty acid of Gb3 has been shown to influence STx binding. In in vitro studies on liquid ordered (lo)/liquid disordered (ld) coexisting artificial membranes, Shiga toxin B (STxB) binds solely to lo domains, thus harboring Gb3 concomitant with an observed lipid redistribution process. These findings raise the question of how the molecular structure of the fatty acid of Gb3 influences the interaction of Gb3 with the different lipids preferentially either found in the lo phase, namely, sphingomyelin and cholesterol, or in the ld phase. We addressed this question by using a series of synthetically available and unlabeled Gb3 glycosphingolipids carrying different long chain C24 fatty acids (saturated, monounsaturated, and α-hydroxylated). In conjunction with surface tension experiments on Langmuir monolayers, we quantified the excess of free energy of mixing of the different Gb3 species in monolayers composed of either sphingomyelin or cholesterol or composed of a fluid phase lipid (DOPC). From a calculation of the total free energy of mixing, we conclude that mixing of the saturated Gb3 species with the ld lipid DOPC is energetically less favorable than all other combinations, while the unsaturated species mix equally well with the lo phase lipids sphingomyelin and cholesterol and the ld phase lipid DOPC. Furthermore, we found that STxB partially penetrates in mixed lipid monolayers (DOPC/sphingomyelin/cholesterol) containing the Gb3 sphingolipid with a saturated or a monounsaturated C24 fatty acid. The maximum insertion pressure, as a measure for protein insertion, is >30 mN/m for both Gb3 molecules and is not significantly different for the two Gb3 species.
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Affiliation(s)
- Larissa Socrier
- Max-Planck-Institute for Dynamics and Self-Organization, Am Fassberg 17, 37077 Göttingen, Germany
- Institute of Organic and Biomolecular Chemistry, Georg-August-Universität, Tammannstraße 2, 37077 Göttingen, Germany
| | - Céline Bail
- Institute of Organic and Biomolecular Chemistry, Georg-August-Universität, Tammannstraße 2, 37077 Göttingen, Germany
| | - Elena Ackermann
- Institute of Organic and Biomolecular Chemistry, Georg-August-Universität, Tammannstraße 2, 37077 Göttingen, Germany
| | - Ann-Kathrin Beresowski
- Institute of Organic and Biomolecular Chemistry, Georg-August-Universität, Tammannstraße 2, 37077 Göttingen, Germany
| | - Somayeh Ahadi
- Institute of Organic Chemistry, Technische Universität Braunschweig, Hagenring 30, 38106 Braunschweig, Germany
| | - Daniel B Werz
- Institute of Organic Chemistry, Technische Universität Braunschweig, Hagenring 30, 38106 Braunschweig, Germany
| | - Claudia Steinem
- Max-Planck-Institute for Dynamics and Self-Organization, Am Fassberg 17, 37077 Göttingen, Germany
- Institute of Organic and Biomolecular Chemistry, Georg-August-Universität, Tammannstraße 2, 37077 Göttingen, Germany
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Yoda T. Quality Evaluation of Drinks Based on Liposome Shape Changes Induced by Flavor Molecules. ACS OMEGA 2022; 7:5679-5686. [PMID: 35224329 PMCID: PMC8867555 DOI: 10.1021/acsomega.1c04946] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/07/2021] [Accepted: 01/27/2022] [Indexed: 05/27/2023]
Abstract
The flavors of ethyl caproate and isoamyl acetate and their precursors are crucial in sake brewing for fermentation and evaluation of the corresponding quality of drinks. However, the quality evaluation of drinks containing these flavors is challenging. Therefore, sake quality was evaluated via dynamic membrane transformation on cell-sized liposomes while adding flavor-containing solutions. Flavor varieties have been reported to influence dynamic shape change patterns. This study reports the observed difference in the dynamic shape change of each flavor. Based on these results, proper quality evaluation of drinks is expected.
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Affiliation(s)
- Tsuyoshi Yoda
- Aomori
Prefectural Industrial Technology Research Center, Hirosaki Industrial Research Institute, 1-1-8 Ougi-machi, Hirosaki
City, Aomori 036-8104, Japan
- Aomori
Prefectural Industrial Technology Research Center, Hachinohe Industrial Research Institute, 1-4-43 Kita-inter-kogyodanchi, Hachinohe City, Aomori 039-2245, Japan
- The
United Graduate School of Agricultural Sciences, Iwate University, 3-18-8,
Ueda, Morioka City, Iwate 020-8550, Japan
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Deletraz A, Tuccio B, Roussel J, Combes M, Cohen-Solal C, Fabre PL, Trouillas P, Vignes M, Callizot N, Durand G. Para-Substituted α-Phenyl- N- tert-butyl Nitrones: Spin-Trapping, Redox and Neuroprotective Properties. ACS OMEGA 2020; 5:30989-30999. [PMID: 33324807 PMCID: PMC7726753 DOI: 10.1021/acsomega.0c03907] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/13/2020] [Accepted: 10/15/2020] [Indexed: 05/06/2023]
Abstract
In this work, a series of para-substituted α-phenyl-N-tert-butyl nitrones (PBN) were studied. Their radical-trapping properties were evaluated by electron paramagnetic resonance, with 4-CF3-PBN being the fastest derivative to trap the hydroxymethyl radical (•CH2OH). The redox properties of the nitrones were further investigated by cyclic voltammetry, and 4-CF3-PBN was the easiest to reduce and the hardest to oxidize. This is due to the presence of the electron-withdrawing CF3 group. Very good correlations between the Hammett constants (σp) of the substituents and both spin-trapping rates and redox potentials were observed. These correlations were further supported by computationally determined ionization potentials and atom charge densities. Finally, the neuroprotective effect of these derivatives was studied using two different in vitro models of cell death on primary cortical neurons injured by glutamate exposure or on glial cells exposed to t BuOOH. Trends between the protection afforded by the nitrones and their lipophilicity were observed. 4-CF3-PBN was the most potent agent against t BuOOH-induced oxidative stress on glial cells, while 4-Me2N-PBN showed potency in both models.
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Affiliation(s)
- Anaïs Deletraz
- Institut
des Biomolécules Max Mousseron, UMR 5247 CNRS-Université
Montpellier-ENSCM & Avignon Université, Equipe Chimie Bioorganique
et Systèmes Amphiphiles, 301 rue Baruch de Spinoza, BP 21239, Avignon 84916, Cedex 9, France
| | - Béatrice Tuccio
- Aix-Marseille
Université, CNRS, ICR UMR 7273, Avenue Escadrille Normandie
Niemen, 13397 Marseille, Cedex 20, France
| | - Julien Roussel
- Institut
des Biomolécules Max Mousseron, UMR 5247 CNRS-Université
Montpellier-ENSCM-Site faculté des Sciences, Place Eugène Bataillon, 34095 Montpellier, Cedex 05, France
| | - Maud Combes
- Neuro-Sys, 410 Chemin Départemental
60, 13120 Gardanne, France
| | - Catherine Cohen-Solal
- Institut
des Biomolécules Max Mousseron, UMR 5247 CNRS-Université
Montpellier-ENSCM-Site faculté des Sciences, Place Eugène Bataillon, 34095 Montpellier, Cedex 05, France
| | - Paul-Louis Fabre
- Pharma-Dev,
UMR152, Université de Toulouse, IRD, UPS, 35 chemin des Maraîchers, 31400 Toulouse, France
| | - Patrick Trouillas
- INSERM U1248
IPPRITT, Univ. Limoges, Faculté de Médecine et Pharmacie, 2 rue Du Professeur Descottes, 87000 Limoges, France
- Regional
Centre of Advanced Technologies and Materials, Faculty of Science, Palacký University, tř. 17 listopadu, 771 46 Olomouc, Czech Republic
| | - Michel Vignes
- Institut
des Biomolécules Max Mousseron, UMR 5247 CNRS-Université
Montpellier-ENSCM-Site faculté des Sciences, Place Eugène Bataillon, 34095 Montpellier, Cedex 05, France
| | - Noelle Callizot
- Neuro-Sys, 410 Chemin Départemental
60, 13120 Gardanne, France
| | - Grégory Durand
- Institut
des Biomolécules Max Mousseron, UMR 5247 CNRS-Université
Montpellier-ENSCM & Avignon Université, Equipe Chimie Bioorganique
et Systèmes Amphiphiles, 301 rue Baruch de Spinoza, BP 21239, Avignon 84916, Cedex 9, France
- . Phone: +33 (0)4 9014 4445
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Homo-Tris-Nitrones Derived from α-Phenyl- N-tert-butylnitrone: Synthesis, Neuroprotection and Antioxidant Properties. Int J Mol Sci 2020; 21:ijms21217949. [PMID: 33114714 PMCID: PMC7663103 DOI: 10.3390/ijms21217949] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2020] [Revised: 10/20/2020] [Accepted: 10/21/2020] [Indexed: 12/11/2022] Open
Abstract
Herein we report the synthesis, antioxidant and neuroprotective power of homo-tris-nitrones (HTN) 1-3, designed on the hypothesis that the incorporation of a third nitrone motif into our previously identified homo-bis-nitrone 6 (HBN6) would result in an improved and stronger neuroprotection. The neuroprotection of HTNs 1-3, measured against oligomycin A/rotenone, showed that HTN2 was the best neuroprotective agent at a lower dose (EC50 = 51.63 ± 4.32 μM), being similar in EC50 and maximal activity to α-phenyl-N-tert-butylnitrone (PBN) and less potent than any of HBNs 4-6. The results of neuroprotection in an in vitro oxygen glucose deprivation model showed that HTN2 was the most powerful (EC50 = 87.57 ± 3.87 μM), at lower dose, but 50-fold higher than its analogous HBN5, and ≈1.7-fold less potent than PBN. HTN3 had a very good antinecrotic (IC50 = 3.47 ± 0.57 μM), antiapoptotic, and antioxidant (EC50 = 6.77 ± 1.35 μM) profile, very similar to that of its analogous HBN6. In spite of these results, and still being attractive neuroprotective agents, HTNs 2 and 3 do not have better neuroprotective properties than HBN6, but clearly exceed that of PBN.
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Abstract
The recent advances of tetramethylpyrazine nitrones and quinolylnitrones for the treatment of stroke have been reviewed and compared with other agents, showing promising therapeutic applications. As a result of a functional transformation of natural product ligustrazine, (Z)-N-tert-butyl-1-(3,5,6-trimethylpyrazin-2-yl)methanimine oxide (6) is a multitarget small nitrone showing potent thrombolytic activity and free radicals scavenging power, in addition to nontoxicity and blood-brain barrier permeability. Similarly, antioxidant (Z)-N-tert-butyl-1-(2-chloro-6-methoxyquinolin-3-yl)methanimine oxide (17) is a novel agent for cerebral ischemia therapy as it is able to scavenge different types of free radical species, showing strong neuroprotection and reduced infarct size.
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Affiliation(s)
- José Marco-Contelles
- Laboratory of Medicinal Chemistry, Institute of Organic Chemistry, CSIC; Juan de la Cierva, 3, 28006 Madrid, Spain
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Socrier L, Rosselin M, Gomez Giraldo AM, Chantemargue B, Di Meo F, Trouillas P, Durand G, Morandat S. Nitrone-Trolox conjugate as an inhibitor of lipid oxidation: Towards synergistic antioxidant effects. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2019; 1861:1489-1501. [PMID: 31247162 DOI: 10.1016/j.bbamem.2019.06.008] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/26/2018] [Revised: 06/06/2019] [Accepted: 06/16/2019] [Indexed: 12/21/2022]
Abstract
Free radical scavengers like α-phenyl-N-tert-butylnitrone (PBN) and 6-hydroxy-2,5,7,8-tetramethylchroman-2-carboxylic acid (Trolox) have been widely used as protective agents in various biomimetic and biological models. A series of three amphiphilic Trolox and PBN derivatives have been designed by adding to those molecules a perfluorinated chain as well as a sugar group in order to render them amphiphilic. In this work, we have studied the interactions between these derivatives and lipid membranes to understand how they influence their ability to prevent membrane lipid oxidation. We showed the derivatives better inhibited the AAPH-induced oxidation of 1,2-dilinoleoyl-sn-glycero-3-phosphocholine (DLiPC) small unilamellar vesicles (SUVs) than the parent compounds. One of the derivatives, bearing both PBN and Trolox moieties on the same fluorinated carrier, exhibited a synergistic antioxidant effect by delaying the oxidation process. We next investigated the ability of the derivatives to interact with DLiPC membranes in order to better understand the differences observed regarding the antioxidant properties. Surface tension and fluorescence spectroscopy experiments revealed the derivatives exhibited the ability to form monolayers at the air/water interface and spontaneously penetrated lipid membranes, underlying pronounced hydrophobic properties in comparison to the parent compounds. We observed a correlation between the hydrophobic properties, the depth of penetration and the antioxidant properties and showed that the location of these derivatives in the membrane is a key parameter to rationalize their antioxidant efficiency. Molecular dynamics (MD) simulations supported the understanding of the mechanism of action, highlighting various key physical-chemical descriptors.
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Affiliation(s)
- Larissa Socrier
- Sorbonne Universités, Université de technologie de Compiègne, CNRS, Génie Enzymatique et Cellulaire, FRE 3580, Centre de recherches Royallieu, CS 60319, 60203, Compiègne cedex, France.
| | - Marie Rosselin
- Institut des Biomolécules Max Mousseron (UMR 5247 CNRS-Université Montpellier-ENSCM) & Avignon University, Equipe Chimie Bioorganique et Systèmes Amphiphiles, 301 rue Baruch de Spinoza, F-84916 Avignon Cedex 9, France
| | - Ana Milena Gomez Giraldo
- Sorbonne Universités, Université de technologie de Compiègne, CNRS, Génie Enzymatique et Cellulaire, FRE 3580, Centre de recherches Royallieu, CS 60319, 60203, Compiègne cedex, France
| | - Benjamin Chantemargue
- INSERM, Univ. Limoges, IPPRITT, U1248, Faculty of Pharmacy, 2 rue du Dr Marcland, 87025 Limoges, France; RCPTM, Palacký University, Faculty of Sciences, Šlechtitelů 27, 78371 Olomouc, Czech Republic
| | - Florent Di Meo
- INSERM, Univ. Limoges, IPPRITT, U1248, Faculty of Pharmacy, 2 rue du Dr Marcland, 87025 Limoges, France
| | - Patrick Trouillas
- INSERM, Univ. Limoges, IPPRITT, U1248, Faculty of Pharmacy, 2 rue du Dr Marcland, 87025 Limoges, France; RCPTM, Palacký University, Faculty of Sciences, Šlechtitelů 27, 78371 Olomouc, Czech Republic
| | - Grégory Durand
- Institut des Biomolécules Max Mousseron (UMR 5247 CNRS-Université Montpellier-ENSCM) & Avignon University, Equipe Chimie Bioorganique et Systèmes Amphiphiles, 301 rue Baruch de Spinoza, F-84916 Avignon Cedex 9, France
| | - Sandrine Morandat
- Sorbonne Universités, Université de technologie de Compiègne, CNRS, Génie Enzymatique et Cellulaire, FRE 3580, Centre de recherches Royallieu, CS 60319, 60203, Compiègne cedex, France
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