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Lawson R, Čechová P, Zarrouk E, Javellaud J, Bazgier V, Otyepka M, Trouillas P, Picard N, Marquet P, Saint-Marcoux F, El Balkhi S. Metabolic interactions of benzodiazepines with oxycodone ex vivo and toxicity depending on usage patterns in an animal model. Br J Pharmacol 2023; 180:829-842. [PMID: 34855983 DOI: 10.1111/bph.15765] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2020] [Revised: 09/16/2021] [Accepted: 11/03/2021] [Indexed: 11/28/2022] Open
Abstract
BACKGROUND AND PURPOSE Opioids and benzodiazepines are frequently combined in medical as well as in non-medical contexts. At high doses, such combinations often result in serious health complications attributed to pharmacodynamics interactions. Here, we investigate the contribution of the metabolic interactions between oxycodone, diazepam and diclazepam (a designer benzodiazepine) in abuse/overdose conditions through ex vivo, in vivo and in silico approaches. EXPERIMENTAL APPROACH A preparation of pooled human liver microsomes was used to study oxycodone metabolism in the presence or absence of diazepam or diclazepam. In mice, diazepam or diclazepam was concomitantly administered with oxycodone to mimic acute intoxication. Diclazepam was introduced on Day 10 in mice continuously infused with oxycodone for 15 days to mimic chronic intoxication. In silico modelling was used to study the molecular interactions of the three drugs with CYP3A4 and 2D6. KEY RESULTS In mice, in acute conditions, both diazepam and diclazepam inhibited the metabolism of oxycodone. In chronic conditions and at pharmacologically equivalent doses, diclazepam drastically enhanced the production of oxymorphone. In silico, the affinity of benzodiazepines was higher than oxycodone for CYP3A4, inhibiting oxycodone metabolism through CYP3A4. Oxycodone metabolism is likely to be diverted towards CYP2D6. CONCLUSION AND IMPLICATIONS Acute doses of diazepam or diclazepam result in the accumulation of oxycodone, whereas chronic administration induces the accumulation of oxymorphone, the toxic metabolite. This suggests that overdoses of opioids in the presence of benzodiazepines are partly due to metabolic interactions, which in turn explain the patterns of toxicity dependent on usage. LINKED ARTICLES This article is part of a themed issue on Advances in Opioid Pharmacology at the Time of the Opioid Epidemic. To view the other articles in this section visit http://onlinelibrary.wiley.com/doi/10.1111/bph.v180.7/issuetoc.
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Affiliation(s)
- Roland Lawson
- University of Limoges, IPPRITT, Limoges, France.,INSERM, IPPRITT, U1248, Limoges, France
| | - Petra Čechová
- Regional Center of Advanced Technologies and Materials, Czech Advanced Technology and Research Institute (CATRIN), Palacký University Olomouc, Olomouc, Czechia
| | - Eliès Zarrouk
- University of Limoges, IPPRITT, Limoges, France.,INSERM, IPPRITT, U1248, Limoges, France
| | - James Javellaud
- University of Limoges, IPPRITT, Limoges, France.,INSERM, IPPRITT, U1248, Limoges, France
| | - Václav Bazgier
- Department of Physical Chemistry, Faculty of Science, Palacký University Olomouc, Olomouc, Czechia
| | - Michal Otyepka
- Regional Center of Advanced Technologies and Materials, Czech Advanced Technology and Research Institute (CATRIN), Palacký University Olomouc, Olomouc, Czechia
| | - Patrick Trouillas
- University of Limoges, IPPRITT, Limoges, France.,INSERM, IPPRITT, U1248, Limoges, France.,Regional Center of Advanced Technologies and Materials, Czech Advanced Technology and Research Institute (CATRIN), Palacký University Olomouc, Olomouc, Czechia
| | - Nicolas Picard
- University of Limoges, IPPRITT, Limoges, France.,INSERM, IPPRITT, U1248, Limoges, France.,Department of Pharmacology, Toxicology and Pharmacovigilance, CHU Limoges, Limoges, France
| | - Pierre Marquet
- University of Limoges, IPPRITT, Limoges, France.,INSERM, IPPRITT, U1248, Limoges, France.,Department of Pharmacology, Toxicology and Pharmacovigilance, CHU Limoges, Limoges, France
| | - Franck Saint-Marcoux
- University of Limoges, IPPRITT, Limoges, France.,INSERM, IPPRITT, U1248, Limoges, France.,Department of Pharmacology, Toxicology and Pharmacovigilance, CHU Limoges, Limoges, France
| | - Souleiman El Balkhi
- INSERM, IPPRITT, U1248, Limoges, France.,Department of Pharmacology, Toxicology and Pharmacovigilance, CHU Limoges, Limoges, France
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2
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Benmameri M, Chantemargue B, Humeau A, Trouillas P, Fabre G. MemCross: Accelerated Weight Histogram method to assess membrane permeability. Biochim Biophys Acta Biomembr 2023; 1865:184120. [PMID: 36669638 DOI: 10.1016/j.bbamem.2023.184120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/28/2022] [Revised: 01/04/2023] [Accepted: 01/05/2023] [Indexed: 01/19/2023]
Abstract
Passive permeation events across biological membranes are determining steps in the pharmacokinetics of xenobiotics. To reach an accurate and rapid prediction of membrane permeation coefficients of drugs is a complex challenge, which can efficiently support drug discovery. Such predictions are indeed highly valuable as they may guide the selection of potential leads with optimum bioavailabilities prior to synthesis. Theoretical models exist to predict these coefficients. Many of them are based on molecular dynamics (MD) simulations, which allow calculation of permeation coefficients through the evaluation of both the potential of mean force (PMF) and the diffusivity profiles. However, these simulations still require intensive computational efforts, and novel methodologies should be developed and benchmarked. Free energy perturbation (FEP) method was recently shown to estimate PMF with a significantly reduced computational cost compared to the adaptive biasing force method. This benchmarking was achieved with small molecules, namely short-chain alcohols. Here, we show that to estimate the PMF of bulkier, drug-like xenobiotics, conformational sampling is a critical issue. To reach a sufficient sampling with FEP calculations requires a relatively long time-scale, which can lower the benefits related to the computational gain. In the present work, the Accelerated Weight Histogram (AWH) method was employed for the first time in all-atom membrane models. The AWH-based protocol, named MemCross, appears affordable to estimate PMF profiles of a series of drug-like xenobiotics, compared to other enhanced sampling methods. The continuous exploration of the crossing pathway by MemCross also allows modeling subdiffusion by computing fractional diffusivity profiles. The method is also versatile as its input parameters are largely insensitive to the molecule properties. It also ensures a detailed description of the molecule orientations along the permeation pathway, picturing all intermolecular interactions at an atomic resolution. Here, MemCross was applied on a series of 12 xenobiotics, including four weak acids, and a coherent structure-activity relationship was established.
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Affiliation(s)
| | | | | | - Patrick Trouillas
- INSERM, UMR 1248, F-87000 Limoges, France; CATRIN RCPTM, 779 00 Olomouc, Holice, Czech Republic
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3
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Chazelas P, Steichen C, Favreau F, Trouillas P, Hannaert P, Thuillier R, Giraud S, Hauet T, Guillard J. Oxidative Stress Evaluation in Ischemia Reperfusion Models: Characteristics, Limits and Perspectives. Int J Mol Sci 2021; 22:ijms22052366. [PMID: 33673423 PMCID: PMC7956779 DOI: 10.3390/ijms22052366] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2021] [Revised: 02/22/2021] [Accepted: 02/23/2021] [Indexed: 12/14/2022] Open
Abstract
Ischemia reperfusion injury is a complex process consisting of a seemingly chaotic but actually organized and compartmentalized shutdown of cell function, of which oxidative stress is a key component. Studying oxidative stress, which results in an imbalance between reactive oxygen species (ROS) production and antioxidant defense activity, is a multi-faceted issue, particularly considering the double function of ROS, assuming roles as physiological intracellular signals and as mediators of cellular component damage. Herein, we propose a comprehensive overview of the tools available to explore oxidative stress, particularly in the study of ischemia reperfusion. Applying chemistry as well as biology, we present the different models currently developed to study oxidative stress, spanning the vitro and the silico, discussing the advantages and the drawbacks of each set-up, including the issues relating to the use of in vitro hypoxia as a surrogate for ischemia. Having identified the limitations of historical models, we shall study new paradigms, including the use of stem cell-derived organoids, as a bridge between the in vitro and the in vivo comprising 3D intercellular interactions in vivo and versatile pathway investigations in vitro. We shall conclude this review by distancing ourselves from "wet" biology and reviewing the in silico, computer-based, mathematical modeling, and numerical simulation options: (a) molecular modeling with quantum chemistry and molecular dynamic algorithms, which facilitates the study of molecule-to-molecule interactions, and the integration of a compound in a dynamic environment (the plasma membrane...); (b) integrative systemic models, which can include many facets of complex mechanisms such as oxidative stress or ischemia reperfusion and help to formulate integrated predictions and to enhance understanding of dynamic interaction between pathways.
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Affiliation(s)
- Pauline Chazelas
- Maintenance Myélinique et Neuropathies Périphériques, Université de Limoges, EA 6309, 87032 Limoges, France; (P.C.); (F.F.)
- Laboratoire de Biochimie et Génétique Moléculaire, CHU de Limoges, 87042 Limoges, France
| | - Clara Steichen
- INSERM U1082, IRTOMIT, 86021 Poitiers, France; (C.S.); (P.H.); (R.T.); (S.G.); (T.H.)
- Faculté de Médecine et de Pharmacie, Université de Poitiers, 86074 Poitiers, France
| | - Frédéric Favreau
- Maintenance Myélinique et Neuropathies Périphériques, Université de Limoges, EA 6309, 87032 Limoges, France; (P.C.); (F.F.)
- Laboratoire de Biochimie et Génétique Moléculaire, CHU de Limoges, 87042 Limoges, France
| | - Patrick Trouillas
- INSERM U1248, IPPRITT, Université de Limoges, 87032 Limoges, France;
- RCPTM, University Palacký of Olomouc, 771 47 Olomouc, Czech Republic
| | - Patrick Hannaert
- INSERM U1082, IRTOMIT, 86021 Poitiers, France; (C.S.); (P.H.); (R.T.); (S.G.); (T.H.)
| | - Raphaël Thuillier
- INSERM U1082, IRTOMIT, 86021 Poitiers, France; (C.S.); (P.H.); (R.T.); (S.G.); (T.H.)
- Faculté de Médecine et de Pharmacie, Université de Poitiers, 86074 Poitiers, France
- Service de Biochimie, CHU de Poitiers, 86021 Poitiers, France
| | - Sébastien Giraud
- INSERM U1082, IRTOMIT, 86021 Poitiers, France; (C.S.); (P.H.); (R.T.); (S.G.); (T.H.)
- Service de Biochimie, CHU de Poitiers, 86021 Poitiers, France
| | - Thierry Hauet
- INSERM U1082, IRTOMIT, 86021 Poitiers, France; (C.S.); (P.H.); (R.T.); (S.G.); (T.H.)
- Faculté de Médecine et de Pharmacie, Université de Poitiers, 86074 Poitiers, France
- Service de Biochimie, CHU de Poitiers, 86021 Poitiers, France
- FHU SUPORT Survival Optimization in Organ Transplantation, 86021 Poitiers, France
- IBiSA Plateforme Modélisation Préclinique-Innovations Chirurgicale et Technologique (MOPICT), Do-maine Expérimental du Magneraud, 17700 Surgères, France
| | - Jérôme Guillard
- UMR CNRS 7285 IC2MP, Team 5 Chemistry, Université de Poitiers, 86073 Poitiers, France
- Correspondence: ; Tel.: +33-5-49-44-38-59
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4
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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] [What about the content of this article? (0)] [Affiliation(s)] [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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5
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Sanver D, Sadeghpour A, Rappolt M, Di Meo F, Trouillas P. Structure and Dynamics of Dioleoyl-Phosphatidylcholine Bilayers under the Influence of Quercetin and Rutin. Langmuir 2020; 36:11776-11786. [PMID: 32911935 DOI: 10.1021/acs.langmuir.0c01484] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Quercetin and rutin, two widely studied flavonoids with applications foreseen in the sectors of pharmaceutical and cosmetic industries, have been chosen as model compounds for a detailed structural and dynamical investigation onto their influence on fluid lipid bilayers. Combining global small angle X-ray scattering analysis with molecular dynamics, various changes in the properties of dioleoyl-phosphatidylcholine (DOPC) bilayers have been determined. The solubility of quercetin in DOPC membranes is assured up to 12 mol %, whereas rutin, with additional glucose and rhamnose groups, are fully soluble only up to 6 mol %. Both flavonoids induce an increase in membrane undulations and thin the bilayers slightly (<1 Å) in a concentration dependent manner, wherein quercetin shows a stronger effect. Concomitantly, in the order of 2-4%, the adjacent bilayer distance increases with the flavonoid's concentration. Partial molecular areas of quercetin and rutin are determined to be 26 and 51 Å2, respectively. Simulated averaged areas per molecule confirm these estimates. A 60° tilted orientation of quercetin is observed with respect to the bilayer normal, whereas the flavonoid moiety of rutin is oriented more perpendicular (α-angle 30°) to the membrane surface. Both flavonoid moieties are located at a depth of 12 and 16 Å for quercetin and rutin, respectively, while their anionic forms display a location closer to the polar interface. Finally, at both simulated concentrations (1.5 and 12 mol %), DOPC-rutin systems induce a stronger packing of the pure DOPC lipid bilayer, mainly due to stronger attractive electrostatic interactions in the polar lipid head region.
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Affiliation(s)
- Didem Sanver
- Faculty of Engineering and Architecture, Department of Food Engineering, Necmettin Erbakan University, Konya 42050, Turkey
- School of Food Science and Nutrition, University of Leeds, Leeds LS2 9JT, U.K
| | - Amin Sadeghpour
- School of Food Science and Nutrition, University of Leeds, Leeds LS2 9JT, U.K
- Biomaterials Science Center, Department of Biomedical Engineering, University of Basel, Allschwil 4123, Switzerland
| | - Michael Rappolt
- School of Food Science and Nutrition, University of Leeds, Leeds LS2 9JT, U.K
| | - Florent Di Meo
- INSERM U1248 IPPRITT, University of Limoges, 2 rue du Prof. Descottes, Limoges 87000, France
| | - Patrick Trouillas
- INSERM U1248 IPPRITT, University of Limoges, 2 rue du Prof. Descottes, Limoges 87000, France
- RCPTM, Department of Physical Chemistry, Faculty of Sciences, Palacký University, Olomouc 771 47, Czech Republic
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Cazzola H, Lemaire L, Acket S, Prost E, Duma L, Erhardt M, Čechová P, Trouillas P, Mohareb F, Rossi C, Rossez Y. The Impact of Plasma Membrane Lipid Composition on Flagellum-Mediated Adhesion of Enterohemorrhagic Escherichia coli. mSphere 2020; 5:e00702-20. [PMID: 32938696 PMCID: PMC7494831 DOI: 10.1128/msphere.00702-20] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2020] [Accepted: 08/27/2020] [Indexed: 01/07/2023] Open
Abstract
Enterohemorrhagic Escherichia coli (EHEC) O157:H7 is a major cause of foodborne gastrointestinal illness. The adhesion of EHEC to host tissues is the first step enabling bacterial colonization. Adhesins such as fimbriae and flagella mediate this process. Here, we studied the interaction of the bacterial flagellum with the host cell's plasma membrane using giant unilamellar vesicles (GUVs) as a biologically relevant model. Cultured cell lines contain many different molecular components, including proteins and glycoproteins. In contrast, with GUVs, we can characterize the bacterial mode of interaction solely with a defined lipid part of the cell membrane. Bacterial adhesion on GUVs was dependent on the presence of the flagellar filament and its motility. By testing different phospholipid head groups, the nature of the fatty acid chains, or the liposome curvature, we found that lipid packing is a key parameter to enable bacterial adhesion. Using HT-29 cells grown in the presence of polyunsaturated fatty acid (α-linolenic acid) or saturated fatty acid (palmitic acid), we found that α-linolenic acid reduced adhesion of wild-type EHEC but not of a nonflagellated mutant. Finally, our results reveal that the presence of flagella is advantageous for the bacteria to bind to lipid rafts. We speculate that polyunsaturated fatty acids prevent flagellar adhesion on membrane bilayers and play a clear role for optimal host colonization. Flagellum-mediated adhesion to plasma membranes has broad implications for host-pathogen interactions.IMPORTANCE Bacterial adhesion is a crucial step to allow bacteria to colonize their hosts, invade tissues, and form biofilm. Enterohemorrhagic Escherichia coli O157:H7 is a human pathogen and the causative agent of diarrhea and hemorrhagic colitis. Here, we use biomimetic membrane models and cell lines to decipher the impact of lipid content of the plasma membrane on enterohemorrhagic E. coli flagellum-mediated adhesion. Our findings provide evidence that polyunsaturated fatty acid (α-linolenic acid) inhibits E. coli flagellar adhesion to the plasma membrane in a mechanism separate from its antimicrobial and anti-inflammatory functions. In addition, we confirm that cholesterol-enriched lipid microdomains, often called lipid rafts, are important in bacterial adhesion. These findings demonstrate that plasma membrane adhesion via bacterial flagella play a significant role for an important human pathogen. This mechanism represents a promising target for the development of novel antiadhesion therapies.
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Affiliation(s)
- Hélène Cazzola
- Université de Technologie de Compiègne, UPJV, UMR CNRS 7025, Enzyme and Cell Engineering, Centre de recherche Royallieu, Compiègne, France
| | - Laurine Lemaire
- Université de Technologie de Compiègne, UPJV, UMR CNRS 7025, Enzyme and Cell Engineering, Centre de recherche Royallieu, Compiègne, France
| | - Sébastien Acket
- Université de Technologie de Compiègne, UPJV, UMR CNRS 7025, Enzyme and Cell Engineering, Centre de recherche Royallieu, Compiègne, France
| | - Elise Prost
- Université de Technologie de Compiègne, UPJV, UMR CNRS 7025, Enzyme and Cell Engineering, Centre de recherche Royallieu, Compiègne, France
| | - Luminita Duma
- Université de Technologie de Compiègne, UPJV, UMR CNRS 7025, Enzyme and Cell Engineering, Centre de recherche Royallieu, Compiègne, France
| | - Marc Erhardt
- Institute for Biology-Bacterial Physiology, Humboldt-Universität zu Berlin, Berlin, Germany
| | - Petra Čechová
- RCPTM, Palacký University Olomouc, Olomouc, Czech Republic
| | - Patrick Trouillas
- RCPTM, Palacký University Olomouc, Olomouc, Czech Republic
- INSERM U1248-IPPRITT, University of Limoges, Limoges, France
| | - Fady Mohareb
- The Bioinformatics Group, School of Water, Energy and Environment, Cranfield University, Cranfield, United Kingdom
| | - Claire Rossi
- Université de Technologie de Compiègne, UPJV, UMR CNRS 7025, Enzyme and Cell Engineering, Centre de recherche Royallieu, Compiègne, France
| | - Yannick Rossez
- Université de Technologie de Compiègne, UPJV, UMR CNRS 7025, Enzyme and Cell Engineering, Centre de recherche Royallieu, Compiègne, France
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Berthier J, Benmameri M, Sauvage FL, Fabre G, Chantemargue B, Arnion H, Marquet P, Trouillas P, Picard N, Saint-Marcoux F. MRP4 is responsible for the efflux transport of mycophenolic acid β-d glucuronide (MPAG) from hepatocytes to blood. Xenobiotica 2020; 51:105-114. [PMID: 32820679 DOI: 10.1080/00498254.2020.1813352] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
Mycophenolic acid (MPA) has become a cornerstone of immunosuppressive therapy, in particular for transplant patients. In the gastrointestinal tract, the liver and the kidney, MPA is mainly metabolized into phenyl-β-d glucuronide (MPAG). Knowledge about the interactions between MPA/MPAG and membrane transporters is still fragmented. The aim of the present study was to explore these interactions with the basolateral hepatic MRP4 transporter. The inhibition of the MRP4-driven transport by various drugs which can be concomitantly prescribed was also evaluated. In vitro experiments using vesicles overexpressing MRP4 showed an ATP-dependent transport of MPAG driven by MRP4 (Michaelis-Menten constant of 233.9 ± 32.8 µM). MPA was not effluxed by MRP4. MRP4-mediated transport of MPAG was inhibited (from -43% to -84%) by ibuprofen, cefazolin, cefotaxime and micafungin. An in silico approach based on molecular docking and molecular dynamics simulations rationalized the mode of binding of MPAG to MRP4. The presence of the glucuronide moiety in MPAG was highlighted as key, being prone to make electrostatic and H-bond interactions with specific residues of the MRP4 protein chamber. This explains why MPAG is a substrate of MRP4 whereas MPA is not.
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Affiliation(s)
- Joseph Berthier
- INSERM, UMR 1248, Univ. Limoges, Limoges, France.,CHU Limoges, Service de Pharmacologie, Toxicologie et Pharmacovigilance, Limoges, France
| | | | | | - Gabin Fabre
- INSERM, UMR 1248, Univ. Limoges, Limoges, France
| | | | | | - Pierre Marquet
- INSERM, UMR 1248, Univ. Limoges, Limoges, France.,CHU Limoges, Service de Pharmacologie, Toxicologie et Pharmacovigilance, Limoges, France
| | - Patrick Trouillas
- INSERM, UMR 1248, Univ. Limoges, Limoges, France.,RCPTM, Univ. Palacký of Olomouc, Olomouc, Czech Republic
| | - Nicolas Picard
- INSERM, UMR 1248, Univ. Limoges, Limoges, France.,CHU Limoges, Service de Pharmacologie, Toxicologie et Pharmacovigilance, Limoges, France
| | - Franck Saint-Marcoux
- INSERM, UMR 1248, Univ. Limoges, Limoges, France.,CHU Limoges, Service de Pharmacologie, Toxicologie et Pharmacovigilance, Limoges, France
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Kopecka J, Trouillas P, Gašparović AČ, Gazzano E, Assaraf YG, Riganti C. Phospholipids and cholesterol: Inducers of cancer multidrug resistance and therapeutic targets. Drug Resist Updat 2020; 49:100670. [DOI: 10.1016/j.drup.2019.100670] [Citation(s) in RCA: 82] [Impact Index Per Article: 20.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2019] [Revised: 11/14/2019] [Accepted: 11/17/2019] [Indexed: 12/13/2022]
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Wu X, Chantemargue B, Di Meo F, Bourgaux C, Chapron D, Trouillas P, Rosilio V. Deciphering the Peculiar Behavior of β-Lapachone in Lipid Monolayers and Bilayers. Langmuir 2019; 35:14603-14615. [PMID: 31619039 DOI: 10.1021/acs.langmuir.9b02886] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
β-Lapachone (β-Lap) is a promising anticancer drug whose applications have been limited so far because of its poor solubility and stability. Its encapsulation in liposomes has been proposed to overcome these issues. However, surface pressure measurements show that β-Lap exhibits atypical interfacial behavior when mixed with lipids. Although the drug does not seem to be retained in lipid monolayers as deduced from the π-A isotherms, small changes in compressibility moduli suggest that β-Lap actually interacts with lipids, either disorganizing or rigidifying their monolayers. Thermal and structural analyses of lipid bilayers confirm the existence of β-Lap/lipid interactions and show that the drug inserts between hydrophobic chains, close to the polar headgroup in DPPC bilayers and deeper in the acyl chains in POPC bilayers. Molecular dynamics simulations allow a comprehensive description of the drug position and orientation in DOPC and POPC bilayers in the presence or absence of cholesterol.
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Affiliation(s)
- Xiao Wu
- Institut Galien Paris Sud , Univ Paris-Sud, CNRS, Université Paris-Saclay , 92296 Châtenay-Malabry , France
| | - Benjamin Chantemargue
- INSERM U1248, Faculty of Pharmacy , Université de Limoges , 2 rue du Docteur Marcland , 87025 Limoges, Cedex France
- Centre of Advanced Technologies and Materials, Department of Physical Chemistry, Faculty of Science , Palacký University , tr. 17 listopadu 12 , 771 46 Olomouc , Czech Republic
| | - Florent Di Meo
- INSERM U1248, Faculty of Pharmacy , Université de Limoges , 2 rue du Docteur Marcland , 87025 Limoges, Cedex France
| | - Claudie Bourgaux
- Institut Galien Paris Sud , Univ Paris-Sud, CNRS, Université Paris-Saclay , 92296 Châtenay-Malabry , France
| | - David Chapron
- Institut Galien Paris Sud , Univ Paris-Sud, CNRS, Université Paris-Saclay , 92296 Châtenay-Malabry , France
| | - Patrick Trouillas
- INSERM U1248, Faculty of Pharmacy , Université de Limoges , 2 rue du Docteur Marcland , 87025 Limoges, Cedex France
- Centre of Advanced Technologies and Materials, Department of Physical Chemistry, Faculty of Science , Palacký University , tr. 17 listopadu 12 , 771 46 Olomouc , Czech Republic
| | - Véronique Rosilio
- Institut Galien Paris Sud , Univ Paris-Sud, CNRS, Université Paris-Saclay , 92296 Châtenay-Malabry , France
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Heřmánková E, Zatloukalová M, Biler M, Sokolová R, Bancířová M, Tzakos AG, Křen V, Kuzma M, Trouillas P, Vacek J. Redox properties of individual quercetin moieties. Free Radic Biol Med 2019; 143:240-251. [PMID: 31381971 DOI: 10.1016/j.freeradbiomed.2019.08.001] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/21/2019] [Revised: 07/24/2019] [Accepted: 08/01/2019] [Indexed: 12/21/2022]
Abstract
Quercetin is one of the most prominent and widely studied flavonoids. Its oxidation has been previously investigated only indirectly by comparative analyses of structurally analogous compounds, e.g. dihydroquercetin (taxifolin). To provide direct evidence about the mechanism of quercetin oxidation, we employed selective alkylation procedures for the step-by-step blocking of individual redox active sites, i.e. the catechol, resorcinol and enol C-3 hydroxyls, as represented by newly prepared quercetin derivatives 1-3. Based on the structure-activity relationship (SAR), electrochemical, and computational (density functional theory) studies, we can clearly confirm that quercetin is oxidized in the following steps: the catechol moiety is oxidized first, forming the benzofuranone derivative via intramolecular rearrangement mechanism; therefore the quercetin C-3 hydroxy group cannot be involved in further oxidation reactions or other biochemical processes. The benzofuranone is oxidized subsequently, followed by oxidation of the resorcinol motif to complete the electrochemical cascade of reactions. Derivatization of individual quercetin hydroxyls has a significant effect on its redox behavior, and, importantly, on its antiradical and stability properties, as shown in DPPH/ABTS radical scavenging assays and UV-Vis spectrophotometry, respectively. The SAR data reported here are instrumental for future studies on the oxidation of biologically or technologically important flavonoids and other polyphenols or polyhydroxy substituted aromatics. This is the first complete and direct study mapping redox properties of individual moieties in quercetin structure.
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Affiliation(s)
- Eva Heřmánková
- Institute of Microbiology, Laboratory of Biotransformation, Academy of Sciences of the Czech Republic, Vídeňská 1083, 142 20, Prague, Czech Republic
| | - Martina Zatloukalová
- Department of Medical Chemistry and Biochemistry, Faculty of Medicine and Dentistry, Palacký University, Hněvotínská 3, 775 15, Olomouc, Czech Republic
| | - Michal Biler
- INSERM U1248, Univ. Limoges, 2 rue du Docteur Marcland, 87025, Limoges, France
| | - Romana Sokolová
- J. Heyrovský Institute of Physical Chemistry of the Czech Academy of Sciences, Dolejškova 3, 182 23, Prague 8, Czech Republic
| | - Martina Bancířová
- Department of Medical Chemistry and Biochemistry, Faculty of Medicine and Dentistry, Palacký University, Hněvotínská 3, 775 15, Olomouc, Czech Republic
| | - Andreas G Tzakos
- Department of Chemistry, University of Ioannina, Ioannina, 45110, Greece
| | - Vladimír Křen
- Institute of Microbiology, Laboratory of Biotransformation, Academy of Sciences of the Czech Republic, Vídeňská 1083, 142 20, Prague, Czech Republic.
| | - Marek Kuzma
- Institute of Microbiology, Laboratory of Biotransformation, Academy of Sciences of the Czech Republic, Vídeňská 1083, 142 20, Prague, Czech Republic
| | - Patrick Trouillas
- INSERM U1248, Univ. Limoges, 2 rue du Docteur Marcland, 87025, Limoges, France; RCPTM, Palacký University, 17. listopadu 1192/12, Olomouc, Czech Republic
| | - Jan Vacek
- Department of Medical Chemistry and Biochemistry, Faculty of Medicine and Dentistry, Palacký University, Hněvotínská 3, 775 15, Olomouc, Czech Republic.
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11
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Tolios A, De Las Rivas J, Hovig E, Trouillas P, Scorilas A, Mohr T. Computational approaches in cancer multidrug resistance research: Identification of potential biomarkers, drug targets and drug-target interactions. Drug Resist Updat 2019; 48:100662. [PMID: 31927437 DOI: 10.1016/j.drup.2019.100662] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2019] [Revised: 10/15/2019] [Accepted: 10/17/2019] [Indexed: 02/07/2023]
Abstract
Like physics in the 19th century, biology and molecular biology in particular, has been fertilized and enhanced like few other scientific fields, by the incorporation of mathematical methods. In the last decades, a whole new scientific field, bioinformatics, has developed with an output of over 30,000 papers a year (Pubmed search using the keyword "bioinformatics"). Huge databases of mass throughput data have been established, with ArrayExpress alone containing more than 2.7 million assays (October 2019). Computational methods have become indispensable tools in molecular biology, particularly in one of the most challenging areas of cancer research, multidrug resistance (MDR). However, confronted with a plethora of different algorithms, approaches, and methods, the average researcher faces key questions: Which methods do exist? Which methods can be used to tackle the aims of a given study? Or, more generally, how do I use computational biology/bioinformatics to bolster my research? The current review is aimed at providing guidance to existing methods with relevance to MDR research. In particular, we provide an overview on: a) the identification of potential biomarkers using expression data; b) the prediction of treatment response by machine learning methods; c) the employment of network approaches to identify gene/protein regulatory networks and potential key players; d) the identification of drug-target interactions; e) the use of bipartite networks to identify multidrug targets; f) the identification of cellular subpopulations with the MDR phenotype; and, finally, g) the use of molecular modeling methods to guide and enhance drug discovery. This review shall serve as a guide through some of the basic concepts useful in MDR research. It shall give the reader some ideas about the possibilities in MDR research by using computational tools, and, finally, it shall provide a short overview of relevant literature.
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Affiliation(s)
- A Tolios
- Department of Blood Group Serology and Transfusion Medicine, Medical University of Vienna, Vienna, Austria; Department of Laboratory Medicine, Medical University of Vienna, Vienna, Austria; Institute of Clinical Chemistry and Laboratory Medicine, Heinrich Heine University, Duesseldorf, Germany.
| | - J De Las Rivas
- Bioinformatics and Functional Genomics Group, Cancer Research Center (CiC-IMBCC, CSIC/USAL/IBSAL), Consejo Superior de Investigaciones Científicas (CSIC) and University of Salamanca (USAL), Campus Miguel de Unamuno s/n, Salamanca, Spain.
| | - E Hovig
- Department of Tumor Biology, Institute for Cancer Research, Oslo University Hospital and Center for Bioinformatics, Department of Informatics, University of Oslo, Oslo, Norway.
| | - P Trouillas
- UMR 1248 INSERM, Univ. Limoges, 2 rue du Dr Marland, 87052, Limoges, France; RCPTM, University Palacký of Olomouc, tr. 17. listopadu 12, 771 46, Olomouc, Czech Republic.
| | - A Scorilas
- Department of Biochemistry & Molecular Biology, Faculty of Biology, National and Kapodistrian University of Athens, Athens, Greece.
| | - T Mohr
- Institute of Cancer Research, Department of Medicine I, Medical University of Vienna, Vienna, Austria; ScienceConsult - DI Thomas Mohr KG, Guntramsdorf, Austria.
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12
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Parenté A, Di Meo F, Lapeyronie E, Al Mansi M, Delourme D, Pélissier P, Brémaud L, Trouillas P, Blanquet V. GASP-1 and GASP-2, two closely structurally related proteins with a functional duality in antitrypsin inhibition specificity: a mechanistic point of view. FEBS J 2019; 287:909-924. [PMID: 31556966 DOI: 10.1111/febs.15072] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2018] [Revised: 06/05/2019] [Accepted: 09/20/2019] [Indexed: 12/12/2022]
Abstract
While GASP-1 and GASP-2 proteins are known to regulate myogenesis by inhibiting myostatin, their structural organization suggests a putative role as multivalent protease inhibitors controlling different protease activities. In this study, we show the noncompetitive and competitive antitrypsin activities of the full-length GASP-1 and GASP-2 proteins, respectively, by using a bacterial system production and in vitro enzymatic experiments. The role of the second Kunitz domain in this functional duality is described by assessing the antitrypsin activity of GASP-1/2 chimeric proteins. Molecular dynamics simulations support the experimental data to rationalize differences in binding modes between trypsin and the GASP-1 and GASP-2 second Kunitz domains. A new inhibition mechanism was evidenced for the second Kunitz domain of GASP-2, in which the conventional cationic residue of trypsin inhibitors was substituted by the strongly interacting glutamine residue.
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Affiliation(s)
- Alexis Parenté
- University of Limoges, INRA, PEIRENE EA7500, USC1061 GAMAA, France
| | | | - Eric Lapeyronie
- University of Limoges, INRA, PEIRENE EA7500, USC1061 GAMAA, France
| | | | - Didier Delourme
- University of Limoges, INRA, PEIRENE EA7500, USC1061 GAMAA, France
| | | | - Laure Brémaud
- University of Limoges, INRA, PEIRENE EA7500, USC1061 GAMAA, France
| | - Patrick Trouillas
- University of Limoges, INSERM, UMR 1248 IPPRITT, France.,RCPTM, Palacký University, Olomouc, Czech Republic
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13
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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. Biochim Biophys Acta Biomembr 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] [What about the content of this article? (0)] [Affiliation(s)] [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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14
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Lauberte L, Fabre G, Ponomarenko J, Dizhbite T, Evtuguin DV, Telysheva G, Trouillas P. Lignin Modification Supported by DFT-Based Theoretical Study as a Way to Produce Competitive Natural Antioxidants. Molecules 2019; 24:molecules24091794. [PMID: 31075868 PMCID: PMC6539611 DOI: 10.3390/molecules24091794] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2019] [Revised: 05/04/2019] [Accepted: 05/08/2019] [Indexed: 11/25/2022] Open
Abstract
The valorization of lignins as renewable aromatic feedstock is of utmost importance in terms of the use of sustainable resources. This study provides a deductive approach towards market-oriented lignin-derived antioxidants by ascertaining the direct effect of different structural features of lignin on the reactivity of its phenolic OH groups in the radical scavenging reactions. The antioxidant activity of a series of compounds, modeling lignin structural units, was experimentally characterized and rationalized, using thermodynamic descriptors. The calculated O–H bond dissociation enthalpies (BDE) of characteristic lignin subunits were used to predict the modification pathways of technical lignins. The last ones were isolated by soda delignification from different biomass sources and their oligomeric fractions were studied as a raw material for modification and production of optimized antioxidants. These were characterized in terms of chemical structure, molecular weight distribution, content of the functional groups, and the antioxidant activity. The developed approach for the targeted modification of lignins allowed the products competitive with two commercial synthetic phenolic antioxidants in both free radical scavenging and stabilization of thermooxidative destruction of polyurethane films.
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Affiliation(s)
- Liga Lauberte
- Latvian State Institute of Wood Chemistry, Dzerbenes Str. 27, LV-1006 Riga, Latvia.
| | - Gabin Fabre
- INSERM UMR 1248, Université de Limoges, Faculté de Pharmacie, 2 rue du Docteur Marcland, 87025 Limoges Cedex, France.
| | | | - Tatiana Dizhbite
- Latvian State Institute of Wood Chemistry, Dzerbenes Str. 27, LV-1006 Riga, Latvia.
| | - Dmitry V Evtuguin
- CICECO/University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal.
| | - Galina Telysheva
- Latvian State Institute of Wood Chemistry, Dzerbenes Str. 27, LV-1006 Riga, Latvia.
| | - Patrick Trouillas
- INSERM UMR 1248, Université de Limoges, Faculté de Pharmacie, 2 rue du Docteur Marcland, 87025 Limoges Cedex, France.
- Regional Centre of Advanced Technologies and Materials, Department of Physical Chemistry, Faculty of Science, Palacký University, tř. 17 listopadu 12, 771 46 Olomouc, Czech Republic.
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Abstract
The conformational feature of noncovalent complexes of two borondifluoride chalcone derivatives was assessed using DFT-D2. The corresponding optical properties were analyzed based on time-dependent density functional theory calculations. As already described in such complexes, the π-stacking interaction existing between both fragments allowed formation of a new absorption band corresponding to the S0 → S1 transition. However, this band appears very close to the most intense band corresponding the S0 → S2 transition.
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Affiliation(s)
- Imene Bayach
- Chemistry Department, College of Science , King Faisal Univzersity , Al Hufüf, 31982 Al-Ahsa , Saudi Arabia
| | - Anthony D'Aleó
- Aix Marseille University, CNRS , CINaM UMR 7325 , Campus de Luminy, 13007 Marseille , France
| | - Patrick Trouillas
- INSERM U1248 IPPRITT , Univ. Limoges , 87032 Limoges , France.,RCPTM, Fac. Sciences , Palacký University , Šlechtitelů 27 , 78371 Olomouc , Czech Republic
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16
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Fási L, Di Meo F, Kuo CY, Stojkovic Buric S, Martins A, Kúsz N, Béni Z, Dékány M, Balogh GT, Pesic M, Wang HC, Trouillas P, Hunyadi A. Antioxidant-Inspired Drug Discovery: Antitumor Metabolite Is Formed in Situ from a Hydroxycinnamic Acid Derivative upon Free-Radical Scavenging. J Med Chem 2019; 62:1657-1668. [DOI: 10.1021/acs.jmedchem.8b01994] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
| | - Florent Di Meo
- INSERM UMR 1248 IPPRITT, Université Limoges, Faculty of Pharmacy, 2 rue du Dr Marcland, F-87000 Limoges, France
| | - Ching-Ying Kuo
- Graduate Institute of Natural Products, Kaohsiung Medical University, Shih-Chuan 1st Rd. 100, Kaohsiung 807, Taiwan, ROC
| | - Sonja Stojkovic Buric
- Department of Neurobiology, Institute for Biological Research, University of Belgrade, Bulevar Despota Stefana 142, 11060 Belgrade, Serbia
| | - Ana Martins
- Institute of Medical Microbiology and Immunobiology, Faculty of Medicine, University of Szeged, Dóm tér 10, H-6720 Szeged, Hungary
| | | | | | | | | | - Milica Pesic
- Department of Neurobiology, Institute for Biological Research, University of Belgrade, Bulevar Despota Stefana 142, 11060 Belgrade, Serbia
| | - Hui-Chun Wang
- Graduate Institute of Natural Products, Kaohsiung Medical University, Shih-Chuan 1st Rd. 100, Kaohsiung 807, Taiwan, ROC
| | - Patrick Trouillas
- INSERM UMR 1248 IPPRITT, Université Limoges, Faculty of Pharmacy, 2 rue du Dr Marcland, F-87000 Limoges, France
- RCPTM, Faculty of Sciences, Palacký University, tr. 17. listopadu 12, 771 46 Olomouc, Czech Republic
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17
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Abstract
MeO-derivatives of phenyl nitrones were synthesized and their electrochemical and spin-trapping properties were studied.
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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
- Avignon 84916 Cedex 9
- France
| | - Kamal Zéamari
- Institut des Biomolécules Max Mousseron
- UMR 5247 CNRS-Université Montpellier-ENSCM & Avignon Université
- Equipe Chimie Bioorganique et Systèmes Amphiphiles
- Avignon 84916 Cedex 9
- France
| | - Florent Di Meo
- INSERM U1248 IPPRITT
- Université de Limoges
- Faculté de Médecine et Pharmacie
- France
| | | | | | - Patrick Trouillas
- INSERM U1248 IPPRITT
- Université de Limoges
- Faculté de Médecine et Pharmacie
- France
- Regional Centre of Advanced Technologies and Materials
| | - Béatrice Tuccio
- Aix-Marseille Université
- CNRS
- ICR UMR 7273
- 13397 Marseille Cedex 20
- France
| | - Grégory Durand
- Institut des Biomolécules Max Mousseron
- UMR 5247 CNRS-Université Montpellier-ENSCM & Avignon Université
- Equipe Chimie Bioorganique et Systèmes Amphiphiles
- Avignon 84916 Cedex 9
- France
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18
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Rezazgui O, Marchand G, Trouillas P, Siegler B, Leroy-Lhez S. Synthesis and Studies of New Fluorescein-Porphyrin Dyads: A Theoretical and Experimental Approach. ChemistrySelect 2018. [DOI: 10.1002/slct.201802225] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Olivier Rezazgui
- PEIRENE - EA7500; Univ. Limoges, 123 Avenue Albert Thomas; 87060 Limoges France
| | - Guillaume Marchand
- PEIRENE - EA7500; Univ. Limoges, 123 Avenue Albert Thomas; 87060 Limoges France
| | - Patrick Trouillas
- INSERM UMR 1248; Univ. Limoges, Faculté de Pharmacie, Bât CBRS, 2 rue du Docteur Marcland; 87025 Limoges Cedex, France
- Regional Centre of Advanced Technologies and Materials; Department of Physical Chemistry; Faculty of Science; Palacký University, tř. 17 listopadu 12; 771 46 Olomouc Czech Republic
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19
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Osella S, Di Meo F, Murugan NA, Fabre G, Ameloot M, Trouillas P, Knippenberg S. Combining (Non)linear Optical and Fluorescence Analysis of DiD To Enhance Lipid Phase Recognition. J Chem Theory Comput 2018; 14:5350-5359. [DOI: 10.1021/acs.jctc.8b00553] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Silvio Osella
- Centre of New Technologies, University of Warsaw, Banacha 2C, 02-097 Warsaw, Poland
- Department of Theoretical Chemistry and Biology, School of Engineering Sciences in Chemistry, Biotechnology and Health, Royal Institute of Technology, SE-10691 Stockholm, Sweden
| | - Florent Di Meo
- Faculty of Pharmacy, UMR 1248 INSERM, Limoges University, 2 rue du Docteur Marcland, 87025 Limoges Cedex, France
| | - N. Arul Murugan
- Department of Theoretical Chemistry and Biology, School of Engineering Sciences in Chemistry, Biotechnology and Health, Royal Institute of Technology, SE-10691 Stockholm, Sweden
| | - Gabin Fabre
- LCSN-EA1069, Faculty of Pharmacy, Limoges University, 2, rue du Dr. Marcland, 87025 Limoges Cedex, France
| | - Marcel Ameloot
- Biomedical Research Institute, Hasselt University, B-3590, Diepenbeek, Belgium
| | - Patrick Trouillas
- Faculty of Pharmacy, UMR 1248 INSERM, Limoges University, 2 rue du Docteur Marcland, 87025 Limoges Cedex, France
- Centre of Advanced Technologies and Materials, Faculty of Science, Palacký University, tř. 17 listopadu 12, 771 46 Olomouc, Czech Republic
| | - Stefan Knippenberg
- Department of Theoretical Chemistry and Biology, School of Engineering Sciences in Chemistry, Biotechnology and Health, Royal Institute of Technology, SE-10691 Stockholm, Sweden
- Biomedical Research Institute, Hasselt University, B-3590, Diepenbeek, Belgium
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20
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Rubio‐Magnieto J, Kajouj S, Di Meo F, Fossépré M, Trouillas P, Norman P, Linares M, Moucheron C, Surin M. Binding Modes and Selectivity of Ruthenium Complexes to Human Telomeric DNA G‐Quadruplexes. Chemistry 2018; 24:15577-15588. [DOI: 10.1002/chem.201802147] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2018] [Revised: 07/12/2018] [Indexed: 02/05/2023]
Affiliation(s)
- Jenifer Rubio‐Magnieto
- Laboratory for Chemistry of Novel Materials Center for Innovation in Materials and Polymers University of Mons-UMONS 20 Place du Parc 7000 Mons Belgium
- Current address: Bioinspired Supramolecular Chemistry and Materials group Departament de Química Inorgànica i Orgànica Universitat Jaume I Avda Sos Baynat s/n E-12071 Castelló Spain
| | - Sofia Kajouj
- Chimie Organique et Photochimie CP160/08 Université libre de Bruxelles 50 avenue F. D. Roosevelt 1050 Bruxelles Belgium
| | - Florent Di Meo
- INSERM U1248 IPPRITT University of Limoges School of Pharmacy 2 rue du Dr. Marcland 87025 Limoges France
| | - Mathieu Fossépré
- Laboratory for Chemistry of Novel Materials Center for Innovation in Materials and Polymers University of Mons-UMONS 20 Place du Parc 7000 Mons Belgium
| | - Patrick Trouillas
- INSERM U1248 IPPRITT University of Limoges School of Pharmacy 2 rue du Dr. Marcland 87025 Limoges France
- RCPTM Palacký University Faculty of Sciences Šlechtitelů 27 78371 Olomouc Czech Republic
| | - Patrick Norman
- Department of Theoretical Chemistry and Biology School of Engineering Sciences in Chemistry Biotechnology and Health KTH Royal Institute of Technology SE-106 91 Stockholm Sweden
| | - Mathieu Linares
- Department of Theoretical Chemistry and Biology School of Engineering Sciences in Chemistry Biotechnology and Health KTH Royal Institute of Technology SE-106 91 Stockholm Sweden
- Swedish e-Science Research Centre (SeRC) KTH Royal Institute of Technology 104 50 Stockholm Sweden
| | - Cécile Moucheron
- Chimie Organique et Photochimie CP160/08 Université libre de Bruxelles 50 avenue F. D. Roosevelt 1050 Bruxelles Belgium
| | - Mathieu Surin
- Laboratory for Chemistry of Novel Materials Center for Innovation in Materials and Polymers University of Mons-UMONS 20 Place du Parc 7000 Mons Belgium
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Knippenberg S, Fabre G, Osella S, Di Meo F, Paloncýová M, Ameloot M, Trouillas P. Atomistic Picture of Fluorescent Probes with Hydrocarbon Tails in Lipid Bilayer Membranes: An Investigation of Selective Affinities and Fluorescent Anisotropies in Different Environmental Phases. Langmuir 2018; 34:9072-9084. [PMID: 29983063 DOI: 10.1021/acs.langmuir.8b01164] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
By reverting to spectroscopy, changes in the biological environment of a fluorescent probe can be monitored and the presence of various phases of the surrounding lipid bilayer membranes can be detected. However, it is currently not always clear in which phase the probe resides. The well-known orange 1,1'-dioctadecyl-3,3,3',3'-tetramethylindodicarbo-cyanine perchlorate (DiI-C18(5)) fluorophore, for instance, and the new, blue BODIPY (4,4-difluoro-4-bora-3 a,4 a-diaza- s-indacene) derivative were experimentally seen to target and highlight identical parts of giant unilamellar vesicles of various compositions, comprising mixtures of dipalmitoylphosphatidylcholine (DPPC), dioleoylphosphatidylcholine (DOPC), sphingomyelin (SM), and cholesterol (Chol). However, it was not clear which of the coexisting membrane phases were visualized (Bacalum et al., Langmuir. 2016, 32, 3495). The present study addresses this issue by utilizing large-scale molecular dynamics simulations and the z-constraint method, which allows evaluating Gibbs free-energy profiles. The current calculations give an indication why, at room temperature, both BODIPY and DiI-C18(5) probes prefer the gel (So) phase in DOPC/DPPC (2:3 molar ratio) and the liquid-ordered (Lo) phase in DOPC/SM/Chol (1:2:1 molar ratio) mixtures. This study highlights the important differences in orientation and location and therefore in efficiency between the probes when they are used in fluorescence microscopy to screen various lipid bilayer membrane phases. Dependent on the lipid composition, the angle between the transition-state dipole moments of both probes and the normal to the membrane is found to deviate clearly from 90°. It is seen that the DiI-C18(5) probe is located in the headgroup region of the SM/Chol mixture, in close contact with water molecules. A fluorescence anisotropy study also indicates that DiI-C18(5) gives rise to a distinctive behavior in the SM/Chol membrane compared to the other considered membranes. The latter behavior has not been seen for the studied BODIPY probe, which is located deeper in the membrane.
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Affiliation(s)
- S Knippenberg
- Department of Theoretical Chemistry and Biology , KTH Royal Institute of Technology , Roslagstullsbacken 15 , S-106 91 Stockholm , Sweden
- Biomedical Research Institute , Hasselt University , Agoralaan Building C , 3590 Diepenbeek , Belgium
| | - G Fabre
- LCSN-EA1069, Faculty of Pharmacy , Limoges University , 2 rue du Dr. Marcland , 87025 Limoges Cedex , France
| | - S Osella
- Centre of New Technologies , University of Warsaw , Banacha 2C , 02-097 Warsaw , Poland
| | - F Di Meo
- Faculty of Pharmacy , INSERM UMR 1248, Limoges University , 2 rue du Docteur Marcland , 87025 Limoges Cedex , France
| | - M Paloncýová
- Department of Theoretical Chemistry and Biology , KTH Royal Institute of Technology , Roslagstullsbacken 15 , S-106 91 Stockholm , Sweden
| | - M Ameloot
- Biomedical Research Institute , Hasselt University , Agoralaan Building C , 3590 Diepenbeek , Belgium
| | - P Trouillas
- Faculty of Pharmacy , INSERM UMR 1248, Limoges University , 2 rue du Docteur Marcland , 87025 Limoges Cedex , France
- Centre of Advanced Technologies and Materials, Faculty of Science , Palacký University , tř. 17 listopadu 12 , 771 46 Olomouc , Czech Republic
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Chantemargue B, Di Meo F, Berka K, Picard N, Arnion H, Essig M, Marquet P, Otyepka M, Trouillas P. Structural patterns of the human ABCC4/MRP4 exporter in lipid bilayers rationalize clinically observed polymorphisms. Pharmacol Res 2018. [DOI: 10.1016/j.phrs.2018.02.029] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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Massiot J, Makky A, Di Meo F, Chapron D, Trouillas P, Rosilio V. Impact of lipid composition and photosensitizer hydrophobicity on the efficiency of light-triggered liposomal release. Phys Chem Chem Phys 2018; 19:11460-11473. [PMID: 28425533 DOI: 10.1039/c7cp00983f] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Photo-triggerable liposomes are considered nowadays as promising drug delivery devices due to their potential to release encapsulated drugs in a spatial and temporal manner. In this work, we have investigated the photopermeation efficiency of three photosensitizers (PSs), namely verteporfin, pheophorbide a and m-THPP when incorporated into liposomes with well-defined lipid compositions (SOPC, DOPC or SLPC). By changing the nature of phospholipids and PSs, the illumination of the studied systems was shown to significantly alter their lipid bilayer properties via the formation of lipid peroxides. The system efficiency depends on the PS/phospholipid association, and the ability of the PS to peroxidize acyl chains. Our results demonstrated the possible use of these three clinically approved (or under investigation) PSs as potential candidates for photo-triggerable liposome conception.
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Affiliation(s)
- Julien Massiot
- Institut Galien Paris Sud, UMR 8612, Univ Paris-Sud, CNRS, Université Paris-Saclay, 5 rue J.B. Clément, F-92290 Châtenay-Malabry, France.
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Valentová K, Káňová K, Di Meo F, Pelantová H, Chambers CS, Rydlová L, Petrásková L, Křenková A, Cvačka J, Trouillas P, Křen V. Chemoenzymatic Preparation and Biophysical Properties of Sulfated Quercetin Metabolites. Int J Mol Sci 2017; 18:ijms18112231. [PMID: 29068411 PMCID: PMC5713201 DOI: 10.3390/ijms18112231] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2017] [Revised: 10/02/2017] [Accepted: 10/20/2017] [Indexed: 11/28/2022] Open
Abstract
Sulfated quercetin derivatives are important authentic standards for metabolic studies. Quercetin-3′-O-sulfate, quercetin-4′-O-sulfate, and quercetin-3-O-sulfate as well as quercetin-di-O-sulfate mixture (quercetin-7,3′-di-O-sulfate, quercetin-7,4′-di-O-sulfate, and quercetin-3′,4′-di-O-sulfate) were synthetized by arylsulfotransferase from Desulfitobacterium hafniense. Purified monosulfates and disulfates were fully characterized using MS and NMR and tested for their 1,1-diphenyl-2-picrylhydrazyl (DPPH), 2,2′-azinobis-(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS+) and N,N-dimethyl-p-phenylenediamine (DMPD) radical scavenging, Folin-Ciocalteau reduction (FCR), ferric reducing antioxidant power (FRAP), and anti-lipoperoxidant activities in rat liver microsomes damaged by tert-butylhydroperoxide. Although, as expected, the sulfated metabolites were usually less active than quercetin, they remained still effective antiradical and reducing agents. Quercetin-3′-O-sulfate was more efficient than quercetin-4′-O-sulfate in DPPH and FCR assays. In contrast, quercetin-4′-O-sulfate was the best ferric reductant and lipoperoxidation inhibitor. The capacity to scavenge ABTS+• and DMPD was comparable for all substances, except for disulfates, which were the most efficient. Quantum calculations and molecular dynamics simulations on membrane models supported rationalization of free radical scavenging and lipid peroxidation inhibition. These results clearly showed that individual metabolites of food bioactives can markedly differ in their biological activity. Therefore, a systematic and thorough investigation of all bioavailable metabolites with respect to native compounds is needed when evaluating food health benefits.
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Affiliation(s)
- Kateřina Valentová
- Institute of Microbiology of the Czech Academy of Sciences, Vídeňská 1083, CZ-14220 Prague, Czech Republic.
| | - Kristýna Káňová
- Institute of Microbiology of the Czech Academy of Sciences, Vídeňská 1083, CZ-14220 Prague, Czech Republic.
| | - Florent Di Meo
- INSERM U850, Univ. Limoges, School of Pharmacy, 2 rue du Docteur Marcland, F-87025 Limoges, France.
| | - Helena Pelantová
- Institute of Microbiology of the Czech Academy of Sciences, Vídeňská 1083, CZ-14220 Prague, Czech Republic.
| | | | - Lenka Rydlová
- Institute of Microbiology of the Czech Academy of Sciences, Vídeňská 1083, CZ-14220 Prague, Czech Republic.
| | - Lucie Petrásková
- Institute of Microbiology of the Czech Academy of Sciences, Vídeňská 1083, CZ-14220 Prague, Czech Republic.
| | - Alena Křenková
- Institute of Microbiology of the Czech Academy of Sciences, Vídeňská 1083, CZ-14220 Prague, Czech Republic.
| | - Josef Cvačka
- Institute of Organic Chemistry and Biochemistry, Czech Academy of Sciences, Flemingovo nám. 2, CZ-16610 Prague, Czech Republic.
| | - Patrick Trouillas
- INSERM U850, Univ. Limoges, School of Pharmacy, 2 rue du Docteur Marcland, F-87025 Limoges, France.
- Regional Centre of Advanced Technologies and Materials, Department of Physical Chemistry, Faculty of Science, Palacký University, tř. 17. listopadu 12, CZ-77146 Olomouc, Czech Republic.
| | - Vladimír Křen
- Institute of Microbiology of the Czech Academy of Sciences, Vídeňská 1083, CZ-14220 Prague, Czech Republic.
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Cakova V, Ossman T, Rajnochova Svobodova A, Vostalova J, Delecolle J, Groh C, Bonté F, Heintz D, Ulrichova J, Trouillas P, Lobstein A. Molecular rationalization of antioxidant properties of bioactive compounds from Aerides rosea Lodd. ex. Lindl. & Paxton (Orchidaceae). Am J Transl Res 2017. [DOI: 10.1055/s-0037-1608055] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- V Cakova
- LVMH Recherche, Saint Jean de Braye, France
- Université de Strasbourg, CNRS, LIT UMR 7200, Illkirch Graffenstaden, France
| | - T Ossman
- UMR 850, INSERM, Univ. Limoges, Faculty of Pharmacy, Limoges, France
| | - A Rajnochova Svobodova
- Department of Medical Chemistry and Biochemistry, Faculty of Medicine and Dentistry, Palacký University, Olomouc, Czech Republic
| | - J Vostalova
- Department of Medical Chemistry and Biochemistry, Faculty of Medicine and Dentistry, Palacký University, Olomouc, Czech Republic
| | - J Delecolle
- Institut de Biologie Moléculaire des Plantes, Plateforme métabolomique, CNRS-UPR 2357, Strasbourg, France
| | - C Groh
- Institut de Biologie Moléculaire des Plantes, Plateforme métabolomique, CNRS-UPR 2357, Strasbourg, France
| | - F Bonté
- LVMH Recherche, Saint Jean de Braye, France
| | - D Heintz
- Institut de Biologie Moléculaire des Plantes, Plateforme métabolomique, CNRS-UPR 2357, Strasbourg, France
| | - J Ulrichova
- Department of Medical Chemistry and Biochemistry, Faculty of Medicine and Dentistry, Palacký University, Olomouc, Czech Republic
| | - P Trouillas
- UMR 850, INSERM, Univ. Limoges, Faculty of Pharmacy, Limoges, France
- RCPTM, Faculty of Science, Palacký University, Olomouc, Czech Republic
| | - A Lobstein
- Université de Strasbourg, CNRS, LIT UMR 7200, Illkirch Graffenstaden, France
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Muhrez K, Largeau B, Emond P, Montigny F, Halimi JM, Trouillas P, Barin-Le Guellec C. Single nucleotide polymorphisms of ABCC2 modulate renal secretion of endogenous organic anions. Biochem Pharmacol 2017; 140:124-138. [DOI: 10.1016/j.bcp.2017.05.012] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2017] [Accepted: 05/17/2017] [Indexed: 01/11/2023]
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Vavříková E, Křen V, Jezova-Kalachova L, Biler M, Chantemargue B, Pyszková M, Riva S, Kuzma M, Valentová K, Ulrichová J, Vrba J, Trouillas P, Vacek J. Novel flavonolignan hybrid antioxidants: From enzymatic preparation to molecular rationalization. Eur J Med Chem 2017; 127:263-274. [DOI: 10.1016/j.ejmech.2016.12.051] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2016] [Revised: 12/02/2016] [Accepted: 12/24/2016] [Indexed: 01/24/2023]
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Vallverdú-Queralt A, Biler M, Meudec E, Guernevé CL, Vernhet A, Mazauric JP, Legras JL, Loonis M, Trouillas P, Cheynier V, Dangles O. p-Hydroxyphenyl-pyranoanthocyanins: An Experimental and Theoretical Investigation of Their Acid-Base Properties and Molecular Interactions. Int J Mol Sci 2016; 17:ijms17111842. [PMID: 27827954 PMCID: PMC5133842 DOI: 10.3390/ijms17111842] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2016] [Revised: 10/27/2016] [Accepted: 10/31/2016] [Indexed: 11/26/2022] Open
Abstract
The physicochemical properties of the wine pigments catechyl-pyranomalvidin-3-O-glucoside (PA1) and guaiacyl-pyranomalvidin-3-O-glucoside (PA2) are extensively revisited using ultraviolet (UV)-visible spectroscopy, dynamic light scattering (DLS) and quantum chemistry density functional theory (DFT) calculations. In mildly acidic aqueous solution, each cationic pigment undergoes regioselective deprotonation to form a single neutral quinonoid base and water addition appears negligible. Above pH = 4, both PA1 and PA2 become prone to aggregation, which is manifested by the slow build-up of broad absorption bands at longer wavelengths (λ ≥ 600 nm), followed in the case of PA2 by precipitation. Some phenolic copigments are able to inhibit aggregation of pyranoanthocyanins (PAs), although at large copigment/PA molar ratios. Thus, chlorogenic acid can dissociate PA1 aggregates while catechin is inactive. With PA2, both chlorogenic acid and catechin are able to prevent precipitation but not self-association. Calculations confirmed that the noncovalent dimerization of PAs is stronger with the neutral base than with the cation and also stronger than π–π stacking of PAs to chlorogenic acid (copigmentation). For each type of complex, the most stable conformation could be obtained. Finally, PA1 can also bind hard metal ions such as Al3+ and Fe3+ and the corresponding chelates are less prone to self-association.
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Affiliation(s)
- Anna Vallverdú-Queralt
- Institut National de la Recherche Agronomique (INRA), UMR1083 Sciences pour l'œnologie, 2 place Pierre Viala, 34060 Montpellier CEDEX, France.
- CIBER Fisiopatología de la Obesidad y la Nutrición (CIBEROBN), Instituto de Salud Carlos III, 28903 Madrid, Spain.
| | - Michal Biler
- INSERM UMR 850, University of Limoges, School of Pharmacy, 2 rue du Dr. Marcland, F-87025 Limoges, France.
- Department of Biophysics, Centre of the Region Haná for Biotechnological and Agricultural Research, Palacký University, Šlechtitelů 27, 78371 Olomouc, Czech Republic.
| | - Emmanuelle Meudec
- Institut National de la Recherche Agronomique (INRA), UMR1083 Sciences pour l'œnologie, 2 place Pierre Viala, 34060 Montpellier CEDEX, France.
| | - Christine Le Guernevé
- Institut National de la Recherche Agronomique (INRA), UMR1083 Sciences pour l'œnologie, 2 place Pierre Viala, 34060 Montpellier CEDEX, France.
| | - Aude Vernhet
- Institut National de la Recherche Agronomique (INRA), UMR1083 Sciences pour l'œnologie, 2 place Pierre Viala, 34060 Montpellier CEDEX, France.
| | - Jean-Paul Mazauric
- Institut National de la Recherche Agronomique (INRA), UMR1083 Sciences pour l'œnologie, 2 place Pierre Viala, 34060 Montpellier CEDEX, France.
| | - Jean-Luc Legras
- Institut National de la Recherche Agronomique (INRA), UMR1083 Sciences pour l'œnologie, 2 place Pierre Viala, 34060 Montpellier CEDEX, France.
| | - Michèle Loonis
- INRA, UMR408 SQPOV, University of Avignon, 84000 Avignon, France.
| | - Patrick Trouillas
- INSERM UMR 850, University of Limoges, School of Pharmacy, 2 rue du Dr. Marcland, F-87025 Limoges, France.
- Regional Centre of Advanced Technologies and Materials, Department of Physical Chemistry, Faculty of Science, Palacký University Olomouc, tř. 17. listopadu 12, 77146 Olomouc, Czech Republic.
| | - Véronique Cheynier
- Institut National de la Recherche Agronomique (INRA), UMR1083 Sciences pour l'œnologie, 2 place Pierre Viala, 34060 Montpellier CEDEX, France.
| | - Olivier Dangles
- INRA, UMR408 SQPOV, University of Avignon, 84000 Avignon, France.
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Bridoux F, Javaugue V, Bender S, Leroy F, Aucouturier P, Debiais-Delpech C, Goujon JM, Quellard N, Bonaud A, Clavel M, Trouillas P, Di Meo F, Gombert JM, Fermand JP, Jaccard A, Cogné M, Touchard G, Sirac C. Unravelling the immunopathological mechanisms of heavy chain deposition disease with implications for clinical management. Kidney Int 2016; 91:423-434. [PMID: 27773425 DOI: 10.1016/j.kint.2016.09.004] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2016] [Revised: 08/11/2016] [Accepted: 09/01/2016] [Indexed: 10/20/2022]
Abstract
Randall-type heavy chain deposition disease (HCDD) is a rare disorder characterized by tissue deposition of a truncated monoclonal immunoglobulin heavy chain lacking the first constant domain. Pathophysiological mechanisms are unclear and management remains to be defined. Here we retrospectively studied 15 patients with biopsy-proven HCDD of whom 14 presented with stage 3 or higher chronic kidney disease, with nephrotic syndrome in 9. Renal lesions were characterized by nodular glomerulosclerosis, with linear peritubular and glomerular deposits of γ-heavy chain in 12 patients or α-heavy chain in 3 patients, without concurrent light chain staining. Only 2 patients had symptomatic myeloma. By serum protein electrophoresis/immunofixation, 13 patients had detectable monoclonal gammopathy. However, none of these techniques allowed detection of the nephrotoxic truncated heavy chain, which was achieved by immunoblot and/or bone marrow heavy chain sequencing in 14 of 15 patients. Serum-free kappa to lambda light chain ratio was abnormal in 11 of 11 patients so examined. Immunofluorescence studies of bone marrow plasma cells showed coexpression of the pathogenic heavy chain with light chain matching the abnormal serum-free light chain in all 3 tested patients. Heavy chain sequencing showed first constant domain deletion in 11 of 11 patients, with high isoelectric point values of the variable domain in 10 of 11 patients. All patients received chemotherapy, including bortezomib in 10 cases. Renal parameters improved in 11 patients who achieved a hematological response, as assessed by normalization of the free light chain ratio in 8 cases. Tissue deposition in HCDD relates to physicochemical peculiarities of both variable and constant heavy chain domains. Early diagnosis and treatment with bortezomib-based combinations appear important to preserve renal prognosis. Thus, monitoring of serum-free light chain is an indirect but useful method to evaluate the hematological response.
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Affiliation(s)
- Frank Bridoux
- Department of Nephrology, University Hospital of Poitiers, Centre de référence de l'amylose AL et des autres maladies par dépôts d'immunoglobuline monoclonale, Poitiers, France; Department of Immunology, National Center for Scientific Research, Joint Research Unit 7276, University of Limoges, Centre de référence de l'amylose AL et des autres maladies par dépôts d'immunoglobuline monoclonale, Limoges, France.
| | - Vincent Javaugue
- Department of Nephrology, University Hospital of Poitiers, Centre de référence de l'amylose AL et des autres maladies par dépôts d'immunoglobuline monoclonale, Poitiers, France
| | - Sébastien Bender
- Department of Immunology, National Center for Scientific Research, Joint Research Unit 7276, University of Limoges, Centre de référence de l'amylose AL et des autres maladies par dépôts d'immunoglobuline monoclonale, Limoges, France
| | - Fannie Leroy
- Department of Nephrology, University Hospital of Poitiers, Centre de référence de l'amylose AL et des autres maladies par dépôts d'immunoglobuline monoclonale, Poitiers, France
| | - Pierre Aucouturier
- Department of Immunology, Inserm UMRS 938, Saint Antoine Hospital; Université Pierre et Marie Curie - Paris6, Paris, France
| | - Céline Debiais-Delpech
- Department of Pathology and Ultrastructural Pathology, University Hospital of Poitiers, Centre de référence de l'amylose AL et des autres maladies par dépôts d'immunoglobuline monoclonale, Poitiers, France
| | - Jean-Michel Goujon
- Department of Pathology and Ultrastructural Pathology, University Hospital of Poitiers, Centre de référence de l'amylose AL et des autres maladies par dépôts d'immunoglobuline monoclonale, Poitiers, France
| | - Nathalie Quellard
- Department of Pathology and Ultrastructural Pathology, University Hospital of Poitiers, Centre de référence de l'amylose AL et des autres maladies par dépôts d'immunoglobuline monoclonale, Poitiers, France
| | - Amélie Bonaud
- Department of Immunology, National Center for Scientific Research, Joint Research Unit 7276, University of Limoges, Centre de référence de l'amylose AL et des autres maladies par dépôts d'immunoglobuline monoclonale, Limoges, France
| | - Marie Clavel
- Department of Immunology, National Center for Scientific Research, Joint Research Unit 7276, University of Limoges, Centre de référence de l'amylose AL et des autres maladies par dépôts d'immunoglobuline monoclonale, Limoges, France
| | - Patrick Trouillas
- INSERM UMR 850, University of Limoges, School of Pharmacy, Limoges, France; Regional Centre of Advanced Technologies and Materials, Department of Physical Chemistry, Faculty of Science, Palacký University Olomouc, Olomouc, Czech Republic
| | - Florent Di Meo
- INSERM UMR 850, University of Limoges, School of Pharmacy, Limoges, France
| | - Jean-Marc Gombert
- Department of Immunology, University Hospital of Poitiers, Poitiers, France
| | - Jean-Paul Fermand
- Department of Hematology and Clinical Immunology, Saint Louis University Hospital, Paris, France
| | - Arnaud Jaccard
- Department of Hematology, University Hospital of Limoges, Centre de référence de l'amylose AL et des autres maladies par dépôts d'immunoglobuline monoclonale, Limoges, France
| | - Michel Cogné
- Department of Immunology, National Center for Scientific Research, Joint Research Unit 7276, University of Limoges, Centre de référence de l'amylose AL et des autres maladies par dépôts d'immunoglobuline monoclonale, Limoges, France
| | - Guy Touchard
- Department of Nephrology, University Hospital of Poitiers, Centre de référence de l'amylose AL et des autres maladies par dépôts d'immunoglobuline monoclonale, Poitiers, France
| | - Christophe Sirac
- Department of Immunology, National Center for Scientific Research, Joint Research Unit 7276, University of Limoges, Centre de référence de l'amylose AL et des autres maladies par dépôts d'immunoglobuline monoclonale, Limoges, France
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31
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Fourré I, Di Meo F, Podloucká P, Otyepka M, Trouillas P. Dimerization of quercetin, Diels-Alder vs. radical-coupling approach: a joint thermodynamics, kinetics, and topological study. J Mol Model 2016; 22:190. [PMID: 27449669 DOI: 10.1007/s00894-016-3051-8] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2016] [Accepted: 06/22/2016] [Indexed: 12/16/2022]
Abstract
Quercetin is a prototypical antioxidant and prominent member of flavonoids, a large group of natural polyphenols. The oxidation of quercetin may lead to its dimerization, which is a paradigm of the more general polyphenol oligomerization. There exist two opposing mechanisms to describe the dimerization process, namely radical-coupling or Diels-Alder reactions. This work presents a comprehensive rationalization of this dimerization process, acquired from density functional theory (DFT) calculations. It is found that the two-step radical-coupling pathway is thermodynamically and kinetically preferred over the Diels-Alder reaction. This is in agreement with the experimental results showing the formation of only one isomer, whereas the Diels-Alder mechanism would yield two isomers. The evolution in bonding, occurring during these two processes, is investigated using the atoms in molecules (AIM) and electron localization function (ELF) topological approaches. It is shown that some electron density is accumulated between the fragments in the transition state of the radical-coupling reaction, but not in the transition state of the Diels-Alder process. Graphical Abstract Quantum chemistry calculations of the dimerization process of quercetin show that a radical coupling approach is preferred to a Diels-Alder type reaction, in agreement with experimental results. Analysis of the bonding evolution highlights the reaction mechanism.
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Affiliation(s)
- Isabelle Fourré
- Sorbonne Universités, UPMC Univ Paris 6, CNRS, Laboratoire de chimie théorique, 4 place Jussieu, 75005, Paris, France.
| | - Florent Di Meo
- Inserm U850, Univ Limoges, Faculty of Pharmacy, 2 rue du Dr Marcland, 87025, Limoges, France.,Department of Physics, Chemistry and Biology (IFM), Linköping University, SE-58183, Linköping, Sweden
| | - Pavlína Podloucká
- Regional Centre for Advanced Technologies and Materials, Department of Physical Chemistry, Faculty of Science, Palacký University, Olomouc, Czech Republic
| | - Michal Otyepka
- Regional Centre for Advanced Technologies and Materials, Department of Physical Chemistry, Faculty of Science, Palacký University, Olomouc, Czech Republic
| | - Patrick Trouillas
- Inserm U850, Univ Limoges, Faculty of Pharmacy, 2 rue du Dr Marcland, 87025, Limoges, France.,Regional Centre for Advanced Technologies and Materials, Department of Physical Chemistry, Faculty of Science, Palacký University, Olomouc, Czech Republic
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Di Meo F, Fabre G, Berka K, Ossman T, Chantemargue B, Paloncýová M, Marquet P, Otyepka M, Trouillas P. In silico pharmacology: Drug membrane partitioning and crossing. Pharmacol Res 2016; 111:471-486. [PMID: 27378566 DOI: 10.1016/j.phrs.2016.06.030] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/20/2016] [Revised: 06/30/2016] [Accepted: 06/30/2016] [Indexed: 01/09/2023]
Abstract
Over the past decade, molecular dynamics (MD) simulations have become particularly powerful to rationalize drug insertion and partitioning in lipid bilayers. MD simulations efficiently support experimental evidences, with a comprehensive understanding of molecular interactions driving insertion and crossing. Prediction of drug partitioning is discussed with respect to drug families (anesthetics; β-blockers; non-steroidal anti-inflammatory drugs; antioxidants; antiviral drugs; antimicrobial peptides). To accurately evaluate passive permeation coefficients turned out to be a complex theoretical challenge; however the recent methodological developments based on biased MD simulations are particularly promising. Particular attention is paid to membrane composition (e.g., presence of cholesterol), which influences drug partitioning and permeation. Recent studies concerning in silico models of membrane proteins involved in drug transport (influx and efflux) are also reported here. These studies have allowed gaining insight in drug efflux by, e.g., ABC transporters at an atomic resolution, explicitly accounting for the mandatory forces induced by the surrounded lipid bilayer. Large-scale conformational changes were thoroughly analyzed.
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Affiliation(s)
- Florent Di Meo
- INSERM UMR 850, Univ. Limoges, Faculty of Pharmacy, 2 rue du Dr Marcland, F-87025, Limoges, France
| | - Gabin Fabre
- LCSN, Univ. Limoges, Faculty of Pharmacy, 2 rue du Dr Marcland, F-87025, Limoges, France
| | - Karel Berka
- Regional Centre for Advanced Technologies and Materials, Department of Physical Chemistry, Faculty of Science, Palacky̿ University, Olomouc, Czech Republic
| | - Tahani Ossman
- INSERM UMR 850, Univ. Limoges, Faculty of Pharmacy, 2 rue du Dr Marcland, F-87025, Limoges, France
| | - Benjamin Chantemargue
- INSERM UMR 850, Univ. Limoges, Faculty of Pharmacy, 2 rue du Dr Marcland, F-87025, Limoges, France; Regional Centre for Advanced Technologies and Materials, Department of Physical Chemistry, Faculty of Science, Palacky̿ University, Olomouc, Czech Republic
| | - Markéta Paloncýová
- Regional Centre for Advanced Technologies and Materials, Department of Physical Chemistry, Faculty of Science, Palacky̿ University, Olomouc, Czech Republic
| | - Pierre Marquet
- INSERM UMR 850, Univ. Limoges, Faculty of Pharmacy, 2 rue du Dr Marcland, F-87025, Limoges, France
| | - Michal Otyepka
- Regional Centre for Advanced Technologies and Materials, Department of Physical Chemistry, Faculty of Science, Palacky̿ University, Olomouc, Czech Republic
| | - Patrick Trouillas
- INSERM UMR 850, Univ. Limoges, Faculty of Pharmacy, 2 rue du Dr Marcland, F-87025, Limoges, France; Regional Centre for Advanced Technologies and Materials, Department of Physical Chemistry, Faculty of Science, Palacky̿ University, Olomouc, Czech Republic.
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Bacalum M, Wang L, Boodts S, Yuan P, Leen V, Smisdom N, Fron E, Knippenberg S, Fabre G, Trouillas P, Beljonne D, Dehaen W, Boens N, Ameloot M. A Blue-Light-Emitting BODIPY Probe for Lipid Membranes. Langmuir 2016; 32:3495-3505. [PMID: 27003513 DOI: 10.1021/acs.langmuir.6b00478] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Here we describe a new BODIPY-based membrane probe (1) that provides an alternative to dialkylcarbocyanine dyes, such as DiI-C18, that can be excited in the blue spectral region. Compound 1 has unbranched octadecyl chains at the 3,5-positions and a meso-amino function. In organic solvents, the absorption and emission maxima of 1 are determined mainly by solvent acidity and dipolarity. The fluorescence quantum yield is high and reaches 0.93 in 2-propanol. The fluorescence decays are well fitted with a single-exponential in pure solvents and in small and giant unilamellar vesicles (GUV) with a lifetime of ca. 4 ns. Probe 1 partitions in the same lipid phase as DiI-C18(5) for lipid mixtures containing sphingomyelin and for binary mixtures of dipalmitoylphosphatidylcholine (DPPC) and dioleoylphosphatidylcholine (DOPC). The lipid phase has no effect on the fluorescence lifetime but influences the fluorescence anisotropy. The translational diffusion coefficients of 1 in GUVs and OLN-93 cells are of the same order as those reported for DiI-C18. The directions of the absorption and emission transition dipole moments of 1 are calculated to be parallel. This is reflected in the high steady-state fluorescence anisotropy of 1 in high ordered lipid phases. Molecular dynamic simulations of 1 in a model of the DOPC bilayer indicate that the average angle of the transition moments with respect to membrane normal is ca. 70°, which is comparable with the value reported for DiI-C18.
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Affiliation(s)
- Mihaela Bacalum
- Biomedical Research Institute, Hasselt University , Agoralaan Building C, 3590, Diepenbeek, Belgium
- Department of Life and Environmental Physics, Horia Hulubei National Institute for Physics and Nuclear Engineering , Reactorului 30, Măgurele, 077125, Romania
| | - Lina Wang
- Department of Chemistry, Katholieke Universiteit Leuven (KU Leuven) , Celestijnenlaan 200f - bus 02404, 3001 Leuven, Belgium
| | - Stijn Boodts
- Department of Chemistry, Katholieke Universiteit Leuven (KU Leuven) , Celestijnenlaan 200f - bus 02404, 3001 Leuven, Belgium
| | - Peijia Yuan
- Department of Chemistry, Katholieke Universiteit Leuven (KU Leuven) , Celestijnenlaan 200f - bus 02404, 3001 Leuven, Belgium
| | - Volker Leen
- Department of Chemistry, Katholieke Universiteit Leuven (KU Leuven) , Celestijnenlaan 200f - bus 02404, 3001 Leuven, Belgium
| | - Nick Smisdom
- Biomedical Research Institute, Hasselt University , Agoralaan Building C, 3590, Diepenbeek, Belgium
| | - Eduard Fron
- Department of Chemistry, Katholieke Universiteit Leuven (KU Leuven) , Celestijnenlaan 200f - bus 02404, 3001 Leuven, Belgium
| | - Stefan Knippenberg
- Biomedical Research Institute, Hasselt University , Agoralaan Building C, 3590, Diepenbeek, Belgium
- Division of Theoretical Chemistry and Biology, KTH Royal Institute of Technology, School of Biotechnology , Roslagstullsbacken 15, S-106 91 Stockholm, Sweden
| | - Gabin Fabre
- LCSN-EA1069, Faculté de Pharmacie, Université de Limoges , 2, rue du Dr. Marcland, 87025 Limoges Cedex, France
- Regional Centre of Advanced Technologies and Materials, Department of Physical Chemistry, Faculty of Science, Palacký University , tř. 17 listopadu 12, 771 46 Olomouc, Czech Republic
| | - Patrick Trouillas
- Regional Centre of Advanced Technologies and Materials, Department of Physical Chemistry, Faculty of Science, Palacký University , tř. 17 listopadu 12, 771 46 Olomouc, Czech Republic
- INSERM UMR-S850, Faculté de Pharmacie, Université de Limoges , 2 rue du Docteur Marcland, 87025 Limoges Cedex, France
- Service de Chimie des Matériaux Nouveaux, Université de Mons , Place du Parc 20, B-7000 Mons, Belgium
| | - David Beljonne
- Service de Chimie des Matériaux Nouveaux, Université de Mons , Place du Parc 20, B-7000 Mons, Belgium
| | - Wim Dehaen
- Department of Chemistry, Katholieke Universiteit Leuven (KU Leuven) , Celestijnenlaan 200f - bus 02404, 3001 Leuven, Belgium
| | - Noël Boens
- Department of Chemistry, Katholieke Universiteit Leuven (KU Leuven) , Celestijnenlaan 200f - bus 02404, 3001 Leuven, Belgium
| | - Marcel Ameloot
- Biomedical Research Institute, Hasselt University , Agoralaan Building C, 3590, Diepenbeek, Belgium
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Kubala M, Čechová P, Geletičová J, Biler M, Štenclová T, Trouillas P, Biedermann D. Flavonolignans As a Novel Class of Sodium Pump Inhibitors. Front Physiol 2016; 7:115. [PMID: 27065883 PMCID: PMC4812144 DOI: 10.3389/fphys.2016.00115] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2016] [Accepted: 03/14/2016] [Indexed: 11/13/2022] Open
Abstract
We examined the inhibitory effects of three flavonolignans and their dehydro- derivatives, taxifolin and quercetin on the activity of the Na+/K+-ATPase (NKA). The flavonolignans silychristin, dehydrosilychristin and dehydrosilydianin inhibited NKA with IC50 of 110 ± 40 μM, 38 ± 8 μM, and 36 ± 14 μM, respectively. Using the methods of molecular modeling, we identified several possible binding sites for these species on NKA and proposed the possible mechanisms of inhibition. The binding to the extracellular- or cytoplasmic C-terminal sites can block the transport of cations through the plasma membrane, while the binding on the interface of cytoplasmic domains can inhibit the enzyme allosterically. Fluorescence spectroscopy experiments confirmed the interaction of these three species with the large cytoplasmic segment connecting transmembrane helices 4 and 5 (C45). The flavonolignans are distinct from the cardiac glycosides that are currently used in NKA treatment. Because their binding sites are different, the mechanism of inhibition is different as well as the range of active concentrations, one can expect that these new NKA inhibitors would exhibit also a different biomedical actions than cardiac glycosides.
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Affiliation(s)
- Martin Kubala
- Department of Biophysics, Faculty of Science, Centre of Region Haná for Biotechnological and Agricultural Research, Palacký University Olomouc, Czech Republic
| | - Petra Čechová
- Department of Biophysics, Faculty of Science, Centre of Region Haná for Biotechnological and Agricultural Research, Palacký University Olomouc, Czech Republic
| | - Jaroslava Geletičová
- Department of Biophysics, Faculty of Science, Centre of Region Haná for Biotechnological and Agricultural Research, Palacký University Olomouc, Czech Republic
| | - Michal Biler
- Department of Biophysics, Faculty of Science, Centre of Region Haná for Biotechnological and Agricultural Research, Palacký UniversityOlomouc, Czech Republic; INSERM UMR 850, School of Pharmacy, University LimogesLimoges, France
| | - Tereza Štenclová
- Department of Biophysics, Faculty of Science, Centre of Region Haná for Biotechnological and Agricultural Research, Palacký University Olomouc, Czech Republic
| | - Patrick Trouillas
- INSERM UMR 850, School of Pharmacy, University LimogesLimoges, France; Department of Physical Chemistry, Faculty of Science, Regional Centre of Advanced Technologies and Materials, Palacký UniversityOlomouc, Czech Republic
| | - David Biedermann
- Laboratory of Biotransformation, Institute of Microbiology, Czech Academy of Sciences Prague, Czech Republic
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Trouillas P, Sancho-García JC, De Freitas V, Gierschner J, Otyepka M, Dangles O. Stabilizing and Modulating Color by Copigmentation: Insights from Theory and Experiment. Chem Rev 2016; 116:4937-82. [PMID: 26959943 DOI: 10.1021/acs.chemrev.5b00507] [Citation(s) in RCA: 286] [Impact Index Per Article: 35.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Natural anthocyanin pigments/dyes and phenolic copigments/co-dyes form noncovalent complexes, which stabilize and modulate (in particular blue, violet, and red) colors in flowers, berries, and food products derived from them (including wines, jams, purees, and syrups). This noncovalent association and their electronic and optical implications constitute the copigmentation phenomenon. Over the past decade, experimental and theoretical studies have enabled a molecular understanding of copigmentation. This review revisits this phenomenon to provide a comprehensive description of the nature of binding (the dispersion and electrostatic components of π-π stacking, the hydrophobic effect, and possible hydrogen-bonding between pigment and copigment) and of spectral modifications occurring in copigmentation complexes, in which charge transfer plays an important role. Particular attention is paid to applications of copigmentation in food chemistry.
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Affiliation(s)
- Patrick Trouillas
- INSERM UMR 850, Univ. Limoges , Faculty of Pharmacy, 2 rue du Dr. Marcland, F-87025 Limoges, France.,Regional Centre of Advanced Technologies and Materials, Department of Physical Chemistry, Faculty of Science, Palacký University Olomouc , tr. 17. listopadu 12, 771 46 Olomouc, Czech Republic
| | - Juan C Sancho-García
- Departamento de Química Física, Universidad de Alicante , Apartado de Correos 99, E-03080 Alicante, Spain
| | - Victor De Freitas
- REQUIMTE/LAQV - Research Unit, Faculty of Science, Porto University , Rua do Campo Alegre, 4169-007 Porto, Portugal
| | - Johannes Gierschner
- Madrid Institute for Advanced Studies - IMDEA Nanoscience , C/Faraday 9, Ciudad Universitaria de Cantoblanco, E-28049 Madrid, Spain
| | - Michal Otyepka
- Regional Centre of Advanced Technologies and Materials, Department of Physical Chemistry, Faculty of Science, Palacký University Olomouc , tr. 17. listopadu 12, 771 46 Olomouc, Czech Republic
| | - Olivier Dangles
- University of Avignon, INRA, UMR408 SQPOV , F-84000 Avignon, France
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Fabre G, Bayach I, Berka K, Paloncýová M, Starok M, Rossi C, Duroux JL, Otyepka M, Trouillas P. Synergism of antioxidant action of vitamins E, C and quercetin is related to formation of molecular associations in biomembranes. Chem Commun (Camb) 2016; 51:7713-6. [PMID: 25851839 DOI: 10.1039/c5cc00636h] [Citation(s) in RCA: 51] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Vitamins E, C and polyphenols (flavonoids and non-flavonoids) are major natural antioxidants capable of preventing damage generated by oxidative stress. Here we show the capacity of these antioxidants to form non-covalent association within lipid bilayers close to the membrane/cytosol interface. Antioxidant regeneration is significantly enhanced in these complexes.
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Affiliation(s)
- Gabin Fabre
- LCSN EA1069, Univ. Limoges, Faculté de Pharmacie, 2 rue du Docteur Marcland, 87025 Limoges Cedex, France
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Rezazgui O, Trouillas P, Qiu SH, Siegler B, Gierschner J, Leroy-Lhez S. Synthesis and conformation of a novel fluorescein–Zn-porphyrin dyad and intramolecular energy transfer. NEW J CHEM 2016. [DOI: 10.1039/c5nj02901e] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Modulations of the optical properties of a new porphyrin–fluorescein dyad were elucidated using experimental and theoretical techniques, with conformational rearrangements being studied.
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Affiliation(s)
| | - Patrick Trouillas
- INSERM UMR 850
- Univ. Limoges
- School of Pharmacy
- 87025 Limoges Cedex
- France
| | | | | | - Johannes Gierschner
- Madrid Institute for Advanced Studies – IMDEA Nanoscience
- Ciudad Universitaria de Cantoblanco
- E-28049 Madrid
- Spain
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Pyszková M, Biler M, Biedermann D, Valentová K, Kuzma M, Vrba J, Ulrichová J, Sokolová R, Mojović M, Popović-Bijelić A, Kubala M, Trouillas P, Křen V, Vacek J. Flavonolignan 2,3-dehydroderivatives: Preparation, antiradical and cytoprotective activity. Free Radic Biol Med 2016; 90:114-25. [PMID: 26582372 DOI: 10.1016/j.freeradbiomed.2015.11.014] [Citation(s) in RCA: 64] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/12/2015] [Revised: 11/09/2015] [Accepted: 11/10/2015] [Indexed: 10/22/2022]
Abstract
The protective constituents of silymarin, an extract from Silybum marianum fruits, have been extensively studied in terms of their antioxidant and hepatoprotective activities. Here, we explore the electron-donor properties of the major silymarin flavonolignans. Silybin (SB), silychristin (SCH), silydianin (SD) and their respective 2,3-dehydroderivatives (DHSB, DHSCH and DHSD) were oxidized electrochemically and their antiradical/antioxidant properties were investigated. Namely, Folin-Ciocalteau reduction, DPPH and ABTS(+) radical scavenging, inhibition of microsomal lipid peroxidation and cytoprotective effects against tert-butyl hydroperoxide-induced damage to a human hepatocellular carcinoma HepG2 cell line were evaluated. Due to the presence of the highly reactive C3-OH group and the C-2,3 double bond (ring C) allowing electron delocalization across the whole structure in the 2,3-dehydroderivatives, these compounds are much more easily oxidized than the corresponding flavonolignans SB, SCH and SD. This finding was unequivocally confirmed not only by experimental approaches, but also by density functional theory (DFT) calculations. The hierarchy in terms of ability to undergo electrochemical oxidation (DHSCH~DHSD>DHSB>>SCH/SD>SB) was consistent with their antiradical activities, mainly DPPH scavenging, as well as in vitro cytoprotection of HepG2 cells. The results are discussed in the context of the antioxidant vs. prooxidant activities of flavonolignans and molecular interactions in complex biological systems.
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Affiliation(s)
- Michaela Pyszková
- Department of Medical Chemistry and Biochemistry, Faculty of Medicine and Dentistry, Palacký University, Hněvotínská 3, 775 15 Olomouc, Czech Republic
| | - Michal Biler
- Department of Biophysics, Centre of the Region Haná for Biotechnological and Agricultural Research, Faculty of Science, Palacký University, tř. 17 listopadu 12, 771 46 Olomouc, Czech Republic; INSERM UMR 850, Univ. Limoges, School of Pharmacy, 2 rue du Docteur Marcland, 87025 Limoges, France
| | - David Biedermann
- Institute of Microbiology, Laboratory of Biotransformation, Czech Academy of Sciences, Vídeňská 1083, 142 20 Prague, Czech Republic
| | - Kateřina Valentová
- Institute of Microbiology, Laboratory of Biotransformation, Czech Academy of Sciences, Vídeňská 1083, 142 20 Prague, Czech Republic
| | - Marek Kuzma
- Institute of Microbiology, Laboratory of Biotransformation, Czech Academy of Sciences, Vídeňská 1083, 142 20 Prague, Czech Republic
| | - Jiří Vrba
- Department of Medical Chemistry and Biochemistry, Faculty of Medicine and Dentistry, Palacký University, Hněvotínská 3, 775 15 Olomouc, Czech Republic
| | - Jitka Ulrichová
- Department of Medical Chemistry and Biochemistry, Faculty of Medicine and Dentistry, Palacký University, Hněvotínská 3, 775 15 Olomouc, Czech Republic
| | - Romana Sokolová
- J. Heyrovský Institute of Physical Chemistry, Czech Academy of Sciences, Dolejškova 3, 182 23 Prague 8, Czech Republic
| | - Miloš Mojović
- Faculty of Physical Chemistry, University of Belgrade, Studentski trg 12-16, 11158 Belgrade, Serbia
| | - Ana Popović-Bijelić
- Faculty of Physical Chemistry, University of Belgrade, Studentski trg 12-16, 11158 Belgrade, Serbia
| | - Martin Kubala
- Department of Biophysics, Centre of the Region Haná for Biotechnological and Agricultural Research, Faculty of Science, Palacký University, tř. 17 listopadu 12, 771 46 Olomouc, Czech Republic
| | - Patrick Trouillas
- INSERM UMR 850, Univ. Limoges, School of Pharmacy, 2 rue du Docteur Marcland, 87025 Limoges, France; Department of Physical Chemistry, Regional Centre of Advanced Technologies and Materials, Faculty of Science, Palacký University, tř. 17 listopadu 12, 771 46 Olomouc, Czech Republic
| | - Vladimír Křen
- Institute of Microbiology, Laboratory of Biotransformation, Czech Academy of Sciences, Vídeňská 1083, 142 20 Prague, Czech Republic
| | - Jan Vacek
- Department of Medical Chemistry and Biochemistry, Faculty of Medicine and Dentistry, Palacký University, Hněvotínská 3, 775 15 Olomouc, Czech Republic.
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Di Meo F, Bayach I, Trouillas P, Sancho-García JC. Unraveling the performance of dispersion-corrected functionals for the accurate description of weakly bound natural polyphenols. J Mol Model 2015; 21:291. [PMID: 26499498 DOI: 10.1007/s00894-015-2838-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2015] [Accepted: 10/09/2015] [Indexed: 11/26/2022]
Abstract
Long-range non-covalent interactions play a key role in the chemistry of natural polyphenols. We have previously proposed a description of supramolecular polyphenol complexes by the B3P86 density functional coupled with some corrections for dispersion. We couple here the B3P86 functional with the D3 correction for dispersion, assessing systematically the accuracy of the new B3P86-D3 model using for that the well-known S66, HB23, NCCE31, and S12L datasets for non-covalent interactions. Furthermore, the association energies of these complexes were carefully compared to those obtained by other dispersion-corrected functionals, such as B(3)LYP-D3, BP86-D3 or B3P86-NL. Finally, this set of models were also applied to a database composed of seven non-covalent polyphenol complexes of the most interest. Graphical abstract Weakly bound natural polyphenolsᅟ.
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Affiliation(s)
- Florent Di Meo
- Division of Theoretical Chemistry, Department of Physics, Chemistry and Biology (IFM), Linköping University, SE-58183, Linköping, Sweden.
| | - Imene Bayach
- Laboratoire de Chimie des Substances Naturelles, Université de Limoges, 2 rue du Dr Marcland, F-87025, Limoges Cedex, France
| | - Patrick Trouillas
- INSERM UMR 850, Univ. Limoges, Faculté de Pharmacie, 2 rue du Dr Marcland, F-87025, Limoges, France
- Regional Centre of Advanced Technologies and Materials, Department of Physical Chemistry, Faculty of Science, Palacký University of Olomouc, tr. 17 listopadu, 771 46, Olomouc, Czech Republic
| | - Juan-Carlos Sancho-García
- Departamento de Química Física, Universidad de Alicante, Apartado de Correos 99, E-03080, Alicante, Spain
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Fabre G, Hänchen A, Calliste CA, Berka K, Banala S, Otyepka M, Süssmuth RD, Trouillas P. Lipocarbazole, an efficient lipid peroxidation inhibitor anchored in the membrane. Bioorg Med Chem 2015; 23:4866-4870. [DOI: 10.1016/j.bmc.2015.05.031] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2015] [Revised: 05/13/2015] [Accepted: 05/15/2015] [Indexed: 11/27/2022]
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Trouillas P, Di Meo F, Gierschner J, Linares M, Sancho-García JC, Otyepka M. Optical properties of wine pigments: theoretical guidelines with new methodological perspectives. Tetrahedron 2015. [DOI: 10.1016/j.tet.2014.10.046] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Pardo A, Mespouille L, Blankert B, Trouillas P, Surin M, Dubois P, Duez P. Quercetin-imprinted chromatographic sorbents revisited: Optimization of synthesis and rebinding protocols for application to natural resources. J Chromatogr A 2014; 1364:128-39. [DOI: 10.1016/j.chroma.2014.08.064] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2014] [Revised: 08/07/2014] [Accepted: 08/17/2014] [Indexed: 01/11/2023]
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Bayach I, Manshoor N, Sancho-García JC, Choudhary MI, Trouillas P, Weber JFF. Oligostilbenoids from the heartwood of N. Heimii: role of non-covalent association in their biogenesis. Chem Asian J 2014; 10:198-211. [PMID: 25234809 DOI: 10.1002/asia.201402673] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2014] [Indexed: 11/06/2022]
Abstract
Four new oligostilbenes, including one dimer and three tetramers of resveratrol, that is, heimiols B-E (1-4) were isolated from the heartwood of Neobalanocarpus heimii (Dipterocarpaceae), together with thirteen known resveratrol oligomers (5-17). Examination of the structural diversity of the isolated oligostilbenes led to hypothesis of their biogenetic origin through a small number of versatile chemical pathways. These hypotheses are strongly supported by computational calculations (based on the density functional theory, DFT) that were performed to rationalize conformational re-arrangements and thus provide insights into the mechanism of oligostilbenoid biosynthesis. Non-covalent complexes are believed to drive the regio- and stereoselectivity of the oligomerization reactions.
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Affiliation(s)
- Imene Bayach
- LCSN-Faculté de Pharmacie, Université de Limoges, 2 rue du Dr. Marcland, 87000 Limoges (France)
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Paloncýová M, Fabre G, DeVane RH, Trouillas P, Berka K, Otyepka M. Benchmarking of Force Fields for Molecule–Membrane Interactions. J Chem Theory Comput 2014; 10:4143-51. [DOI: 10.1021/ct500419b] [Citation(s) in RCA: 63] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Markéta Paloncýová
- Regional
Centre of Advanced Technologies and Materials, Department of Physical
Chemistry, Faculty of Science, Palacký University Olomouc, tř.
17 Listopadu 12, 771 46 Olomouc, Czech Republic
| | - Gabin Fabre
- Regional
Centre of Advanced Technologies and Materials, Department of Physical
Chemistry, Faculty of Science, Palacký University Olomouc, tř.
17 Listopadu 12, 771 46 Olomouc, Czech Republic
- LCSN
EA1069, Faculté de Pharmacie, Université de Limoges, 2 Rue de
Docteur Marcland, 87025 Limoges Cedex, France
| | - Russell H. DeVane
- Corporate Modeling and
Simulation, Procter and Gamble, 8611
Beckett Road, West Chester, Ohio 45069, United States
| | - Patrick Trouillas
- Regional
Centre of Advanced Technologies and Materials, Department of Physical
Chemistry, Faculty of Science, Palacký University Olomouc, tř.
17 Listopadu 12, 771 46 Olomouc, Czech Republic
- INSERM
UMR-S850, Faculté de Pharmacie, Université de Limoges, 2 Rue du
Docteur Marcland, 87025 Limoges Cedex, France
- Laboratoire
de Chimie des Matériaux Nouveaux, Université de Mons, Place du Parc 20, B-7000 Mons, Belgium
| | - Karel Berka
- Regional
Centre of Advanced Technologies and Materials, Department of Physical
Chemistry, Faculty of Science, Palacký University Olomouc, tř.
17 Listopadu 12, 771 46 Olomouc, Czech Republic
| | - Michal Otyepka
- Regional
Centre of Advanced Technologies and Materials, Department of Physical
Chemistry, Faculty of Science, Palacký University Olomouc, tř.
17 Listopadu 12, 771 46 Olomouc, Czech Republic
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45
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Ponomarenko J, Trouillas P, Martin N, Dizhbite T, Krasilnikova J, Telysheva G. Elucidation of antioxidant properties of wood bark derived saturated diarylheptanoids: a comprehensive (DFT-supported) understanding. Phytochemistry 2014; 103:178-187. [PMID: 24703933 DOI: 10.1016/j.phytochem.2014.03.010] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/17/2013] [Accepted: 03/10/2014] [Indexed: 06/03/2023]
Abstract
A series of diarylheptanoids, namely 1,7-bis-(3,4-dihydroxyphenyl)-heptan-3-one-5-O-D-xylopyranoside (oregonin), 1,7-bis-(3,4-dihydroxyphenyl)-3-hydroxyheptane-5-O-β-D-xylopyranoside and 1,7-bis-(4-hydroxyphenyl)-heptane-3-one-5-O-β-D-glucopyranoside (platyphylloside), were isolated from the bark of alder family trees, a species widely spread over in Europe. As antioxidants, these natural polyphenols have a promising potential in various fields of application, but their redox reactivity is insufficiently characterized. In this work, their antioxidant activity is described using assays based on DPPH and ABTS(+) radical scavenging, oxygen anion radicals (O2(-)) quenching. The standardized ORAC assay was also achieved, which measures the capacity to protect fluorescent molecules against oxidative degradation. The measured antioxidant activity was higher than that of the well-known antioxidant and biologically active diarylheptanoid curcumin. Molecular modeling was used to rationalize the differences in activity and the mechanisms of action. Thermodynamic descriptors mainly O-H bond dissociation enthalpies (BDEs) establish a clear structure-activity relationship.
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Affiliation(s)
- Jevgenija Ponomarenko
- University of Latvia, Faculty of Chemistry, K. Valdemara Str. 48, LV-1013, Riga, Latvia; Latvian State Institute of Wood Chemistry, Dzerbenes Str. 27, LV-1006, Riga, Latvia.
| | - Patrick Trouillas
- Inserm UMR-S850, Faculté de Pharmacie, Université de Limoges, 2 rue du Docteur Marcland, Limoges, France; Service de Chimie des Matériaux Nouveaux, Université de Mons - UMONS, Place du Parc 20, 7000 Mons, Belgium; Regional Center of Advanced Technologies and Materials, Department of Physical Chemistry, Faculty of Science, Palacký University, 17. listopadu 1192/12, 77146 Olomouc, Czech Republic
| | - Nicolas Martin
- Inserm UMR-S850, Faculté de Pharmacie, Université de Limoges, 2 rue du Docteur Marcland, Limoges, France
| | - Tatyana Dizhbite
- Latvian State Institute of Wood Chemistry, Dzerbenes Str. 27, LV-1006, Riga, Latvia
| | | | - Galina Telysheva
- Latvian State Institute of Wood Chemistry, Dzerbenes Str. 27, LV-1006, Riga, Latvia
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46
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Di Meo F, Trouillas P, Adamo C, Sancho-García JC. Application of recent double-hybrid density functionals to low-lying singlet-singlet excitation energies of large organic compounds. J Chem Phys 2014; 139:164104. [PMID: 24182001 DOI: 10.1063/1.4825359] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
The present work assesses some recently developed double-hybrid density functionals (B2π-PLYP, PBE0-DH, and PBE0-2) using linear-response Tamm-Dancoff Time-Dependent Density Functional Theory. This assessment is achieved against experimentally derived low-lying excitation energies of large organic dyes of recent interest, including some excitations dominated by charge-transfer transitions. Comparisons are made with some of the best-performing methods established from the literature, such as PBE0 or B3LYP hybrid or the recently proposed B2-PLYP and B2GP-PLYP double-hybrid models, to ascertain their quality and robustness on equal footing. The accuracy of parameter-free or empirical forms of double-hybrid functionals is also briefly discussed. Generally speaking, it turns out that double-hybrid expressions always provide more accurate estimates than corresponding hybrid methods. Double-hybrid functionals actually reach averaged accuracies of 0.2 eV, that can be admittedly considered close to any intended accuracy limit within the present theoretical framework.
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Affiliation(s)
- F Di Meo
- INSERM UMR-S850 - Faculté de Pharmacie, Université de Limoges, 87025 Limoges, France
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Novotná M, Gažák R, Biedermann D, Di Meo F, Marhol P, Kuzma M, Bednárová L, Fuksová K, Trouillas P, Křen V. cis-trans Isomerization of silybins A and B. Beilstein J Org Chem 2014; 10:1047-1063. [PMID: 24991256 PMCID: PMC4077359 DOI: 10.3762/bjoc.10.105] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2013] [Accepted: 04/04/2014] [Indexed: 12/27/2022] Open
Abstract
Methods were developed and optimized for the preparation of the 2,3-cis- and the 10,11-cis-isomers of silybin by the Lewis acid catalyzed (BF3∙OEt2) isomerization of silybins A (1a) and B (1b) (trans-isomers). The absolute configuration of all optically pure compounds was determined by using NMR and comparing their electronic circular dichroism data with model compounds of known absolute configurations. Mechanisms for cis-trans-isomerization of silybin are proposed and supported by quantum mechanical calculations.
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Affiliation(s)
- Michaela Novotná
- Institute of Microbiology, v.v.i. AS CR, Vídeňská 1083, Prague 4, CZ-14220, Czech Republic
| | - Radek Gažák
- Institute of Microbiology, v.v.i. AS CR, Vídeňská 1083, Prague 4, CZ-14220, Czech Republic
- Department of Biochemistry, Faculty of Science, Charles University in Prague, Hlavova 8, CZ-12840 Prague 2, Czech Republic
| | - David Biedermann
- Institute of Microbiology, v.v.i. AS CR, Vídeňská 1083, Prague 4, CZ-14220, Czech Republic
| | - Florent Di Meo
- Inserm UMR-S850, Faculté de Pharmacie, Université de Limoges, 2 Rue du Docteur Marcland, F-87025 Limoges, France
- Present address: Department of Physics, Chemistry and Biology (IFM), Linköping University, SE-58183, Linköping, Sweden
| | - Petr Marhol
- Institute of Microbiology, v.v.i. AS CR, Vídeňská 1083, Prague 4, CZ-14220, Czech Republic
| | - Marek Kuzma
- Institute of Microbiology, v.v.i. AS CR, Vídeňská 1083, Prague 4, CZ-14220, Czech Republic
| | - Lucie Bednárová
- Institute of Organic Chemistry and Biochemistry, v.v.i. AS CR, Flemingovo náměstí 2, Prague 6, CZ-16610, Czech Republic
| | - Kateřina Fuksová
- Institute of Microbiology, v.v.i. AS CR, Vídeňská 1083, Prague 4, CZ-14220, Czech Republic
| | - Patrick Trouillas
- Inserm UMR-S850, Faculté de Pharmacie, Université de Limoges, 2 Rue du Docteur Marcland, F-87025 Limoges, France
- Department of Physical Chemistry, University of Olomouc, tř. 17. listopadu 12, CZ-77146 Olomouc, Czech Republic
- Laboratoire de Chimie des Matériaux Nouveaux, Université de Mons, Place du Parc 20, B-7000 Mons, Belgium
| | - Vladimír Křen
- Institute of Microbiology, v.v.i. AS CR, Vídeňská 1083, Prague 4, CZ-14220, Czech Republic
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48
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Trouillas P. Conclusion : avenir des UNV et thrombolyse en Afrique. Rev Neurol (Paris) 2014. [DOI: 10.1016/j.neurol.2014.01.549] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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49
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Schubert V, Di Meo F, Saaidi PL, Bartoschek S, Fiedler HP, Trouillas P, Süssmuth RD. Stereochemistry and Conformation of Skyllamycin, a Non-Ribosomally Synthesized Peptide fromStreptomycessp. Acta 2897. Chemistry 2014; 20:4948-55. [DOI: 10.1002/chem.201304562] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2013] [Indexed: 11/09/2022]
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50
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Pouget C, Trouillas P, Gueye R, Champavier Y, Laurent A, Duroux JL, Sol V, Fagnere C. Exploring the Use of the Suzuki Coupling Reaction in the Synthesis of 4′-Alkyl-2′-hydroxyacetophenones. Synlett 2013. [DOI: 10.1055/s-0033-1340312] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- Christelle Pouget
- EA 1069-GDR CNRS 3049, Laboratoire de Chimie des Substances Naturelles, Faculté de Pharmacie
| | - Patrick Trouillas
- EA 1069-GDR CNRS 3049, Laboratoire de Chimie des Substances Naturelles, Faculté de Pharmacie
| | - Rokhaya Gueye
- EA 1069-GDR CNRS 3049, Laboratoire de Chimie des Substances Naturelles, Faculté de Pharmacie
| | - Yves Champavier
- Service Commun de Recherche et d’Analyses de Biomolécules de Limoges (SCRABL), Université de Limoges
| | - Aurélie Laurent
- EA 1069-GDR CNRS 3049, Laboratoire de Chimie des Substances Naturelles, Faculté de Pharmacie
| | - Jean-Luc Duroux
- EA 1069-GDR CNRS 3049, Laboratoire de Chimie des Substances Naturelles, Faculté de Pharmacie
| | - Vincent Sol
- EA 1069-GDR CNRS 3049, Laboratoire de Chimie des Substances Naturelles, Faculté de Pharmacie
| | - Catherine Fagnere
- EA 1069-GDR CNRS 3049, Laboratoire de Chimie des Substances Naturelles, Faculté de Pharmacie
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