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El Balkhi S, Rahali MA, Lakis R, Sauvage FL, Martin M, Janaszkiewicz A, Lawson R, Goncalves R, Carrier P, Loustaud-Ratti V, Guyot A, Marquet P, Di Meo F, Saint-Marcoux F. Early detection of liver injuries by the Serum enhanced binding test sensitive to albumin post-transcriptional modifications. Sci Rep 2024; 14:1434. [PMID: 38228668 PMCID: PMC10791642 DOI: 10.1038/s41598-024-51412-0] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2023] [Accepted: 01/04/2024] [Indexed: 01/18/2024] Open
Abstract
Early and sensitive biomarkers of liver dysfunction and drug-induced liver injury (DILI) are still needed, both for patient care and drug development. We developed the Serum Enhanced Binding (SEB) test to reveal post-transcriptional modifications (PTMs) of human serum albumin resulting from hepatocyte dysfunctions and further evaluated its performance in an animal model. The SEB test consists in spiking serum ex-vivo with ligands having specific binding sites related to the most relevant albumin PTMs and measuring their unbound fraction. To explore the hypothesis that albumin PTMs occur early during liver injury and can also be detected by the SEB test, we induced hepatotoxicity in male albino Wistar rats by administering high daily doses of ethanol and CCl4 over several days. Blood was collected for characterization and quantification of albumin isoforms by high-resolution mass spectrometry, for classical biochemical analyses as well as to apply the SEB test. In the exposed rats, the appearance of albumin isoforms paralleled the positivity of the SEB test ligands and histological injuries. These were observed as early as D3 in the Ethanol and CCl4 groups, whereas the classical liver tests (ALT, AST, PAL) significantly increased only at D7. The behavior of several ligands was supported by structural and molecular simulation analysis. The SEB test and albumin isoforms revealed hepatocyte damage early, before the current biochemical biomarkers. The SEB test should be easier to implement in the clinics than albumin isoform profiling.
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Affiliation(s)
- Souleiman El Balkhi
- P&T, UMR1248, Inserm, Univ. Limoges, Limoges, France.
- Department of Pharmacology, Toxicology and Pharmacovigilance, CHU Limoges, Limoges, France.
- Pharmacology-Toxicology and Pharmacovigilance Department, Centre de Biologie Et de Recherche en Santé (CBRS), 2, Av. Martin Luther King, 87042, Limoges Cedex, France.
| | - Mohamad Ali Rahali
- P&T, UMR1248, Inserm, Univ. Limoges, Limoges, France
- Department of Pharmacology, Toxicology and Pharmacovigilance, CHU Limoges, Limoges, France
| | - Roy Lakis
- P&T, UMR1248, Inserm, Univ. Limoges, Limoges, France
| | | | | | | | - Roland Lawson
- P&T, UMR1248, Inserm, Univ. Limoges, Limoges, France
| | | | - Paul Carrier
- P&T, UMR1248, Inserm, Univ. Limoges, Limoges, France
- Department of Liver Disease, CHU Limoges, Limoges, France
| | - Veronique Loustaud-Ratti
- P&T, UMR1248, Inserm, Univ. Limoges, Limoges, France
- Department of Liver Disease, CHU Limoges, Limoges, France
| | - Anne Guyot
- Department of Pathology, CHU Limoges, Limoges, France
| | - Pierre Marquet
- P&T, UMR1248, Inserm, Univ. Limoges, Limoges, France
- Department of Pharmacology, Toxicology and Pharmacovigilance, CHU Limoges, Limoges, France
| | | | - Franck Saint-Marcoux
- P&T, UMR1248, Inserm, Univ. Limoges, Limoges, France
- Department of Pharmacology, Toxicology and Pharmacovigilance, CHU Limoges, Limoges, France
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Tóth Á, Crespi V, Janaszkiewicz A, Di Meo F. Computational and structural insights into the pre- and post-hydrolysis states of bovine multidrug resistance-associated protein 1. Basic Clin Pharmacol Toxicol 2023; 133:508-525. [PMID: 37038087 DOI: 10.1111/bcpt.13871] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2022] [Revised: 03/30/2023] [Accepted: 03/31/2023] [Indexed: 04/12/2023]
Abstract
ATP-binding cassette C-family drug membrane transporters play an important role in local pharmacokinetics, that is, drug concentration in cellular compartments. From the structural point of view, only the bovine ortholog of the multidrug resistance-associated protein 1 (bMRP1) has been resolved. We here used μs-scaled molecular dynamics simulations to investigate the structure and dynamics of the bovine multidrug resistance-associated protein 1 in pre- and post-hydrolysis functional states. The present work aims to examine the slight but likely relevant structural differences between pre- and post-hydrolysis states of outward-facing conformations as well as the interactions between the multidrug resistance-associated protein 1 and the surrounding lipid bilayer. Global conformational dynamics show unfavourable extracellular opening associated with nucleotide-binding domain dimerization indicating that the post-hydrolysis state adopts a close-cleft conformation rather than an outward-open conformation. Our present simulations also highlight persistent interactions with annular cholesterol molecules and the expected active role of lipid bilayer in the allosteric communication between distant domains of the transporter.
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Affiliation(s)
- Ágota Tóth
- Inserm UMR 1248 Pharmacology & Transplantation, Univ. Limoges, Limoges, France
| | - Veronica Crespi
- Inserm UMR 1248 Pharmacology & Transplantation, Univ. Limoges, Limoges, France
| | | | - Florent Di Meo
- Inserm UMR 1248 Pharmacology & Transplantation, Univ. Limoges, Limoges, France
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Janaszkiewicz A, Tóth Á, Faucher Q, Arnion H, Védrenne N, Barin-Le Guellec C, Marquet P, Di Meo F. Substrate binding and lipid-mediated allostery in the human organic anion transporter 1 at the atomic-scale. Biomed Pharmacother 2023; 160:114342. [PMID: 36739760 DOI: 10.1016/j.biopha.2023.114342] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2023] [Revised: 01/23/2023] [Accepted: 01/27/2023] [Indexed: 02/05/2023] Open
Abstract
The Organic Anion Transporter 1 is a membrane transporter known for its central role in drug elimination by the kidney. hOAT1 is an antiporter translocating substrate in exchange for a-ketoglutarate. The understanding of hOAT1 structure and function remains limited due to the absence of resolved structure of hOAT1. Benefiting from conserved structural and functional patterns shared with other Major Facilitator Superfamily transporters, the present study intended to investigate fragments of hOAT1 transport function and modulation of its activity in order to make a step forward the understanding of its transport cycle. μs-long molecular dynamics simulation of hOAT1 were carried out suggesting two plausible binding sites for a typical substrate, adefovir, in line with experimental observations. The well-known B-like motif binding site was observed in line with previous studies. However, we here propose a new inner binding cavity which is expected to be involved in substrate translocation event. Binding modes of hOAT1 co-substrate α-ketoglutarate were also investigated suggesting that it may bind to highly conserved intracellular motifs. We here hypothesise that α-ketoglutarate may disrupt the pseudo-symmetrical intracellular charge-relay system which in turn may participate to the destabilisation of OF conformation. Investigations regarding allosteric communications along hOAT1 also suggest that substrate binding event might modulate the dynamics of intracellular charge relay system, assisted by surrounding lipids as active partners. We here proposed a structural rationalisation of transport impairments observed for two single nucleotide polymorphisms, p.Arg50His and p.Arg454Gln suggesting that the present model may be used to transport dysfunctions arising from hOAT1 mutations.
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Affiliation(s)
| | - Ágota Tóth
- Inserm U1248 Pharmacology & Transplantation, Univ. Limoges, 87000 Limoges, France
| | - Quentin Faucher
- Inserm U1248 Pharmacology & Transplantation, Univ. Limoges, 87000 Limoges, France; Division of Pharmacology, Utrecht Institute for Pharmaceutical Sciences, Utre-cht University, 3584 CG Utrecht, The Netherlands
| | - Hélène Arnion
- Inserm U1248 Pharmacology & Transplantation, Univ. Limoges, 87000 Limoges, France
| | - Nicolas Védrenne
- Inserm U1248 Pharmacology & Transplantation, Univ. Limoges, 87000 Limoges, France
| | - Chantal Barin-Le Guellec
- Inserm U1248 Pharmacology & Transplantation, Univ. Limoges, 87000 Limoges, France; CHU de Tours, 2 Boulevard Tonnellé, 37044 Tours, France
| | - Pierre Marquet
- Inserm U1248 Pharmacology & Transplantation, Univ. Limoges, 87000 Limoges, France; Department of Pharmacology and Toxicology, CHU Limoges, F-87000 Limoges, France
| | - Florent Di Meo
- Inserm U1248 Pharmacology & Transplantation, Univ. Limoges, 87000 Limoges, France.
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Tóth Á, Janaszkiewicz A, Crespi V, Di Meo F. On the interplay between lipids and asymmetric dynamics of an NBS degenerate ABC transporter. Commun Biol 2023; 6:149. [PMID: 36737455 PMCID: PMC9898250 DOI: 10.1038/s42003-023-04537-3] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2022] [Accepted: 01/25/2023] [Indexed: 02/05/2023] Open
Abstract
Multidrug resistance-associated proteins are ABC C-family exporters. They are crucial in pharmacology as they transport various substrates across membranes. However, the role of the degenerate nucleotide-binding site (NBS) remains unclear likewise the interplay with the surrounding lipid environment. Here, we propose a dynamic and structural overview of MRP1 from ca. 110 μs molecular dynamics simulations. ATP binding to NBS1 is likely maintained along several transport cycles. Asymmetric NBD behaviour is ensured by lower signal transduction from NBD1 to the rest of the protein owing to the absence of ball-and-socket conformation between NBD1 and coupling helices. Even though surrounding lipids play an active role in the allosteric communication between the substrate-binding pocket and NBDs, our results suggest that lipid composition has a limited impact, mostly by affecting transport kinetics. We believe that our work can be extended to other degenerate NBS ABC proteins and provide hints for deciphering mechanistic differences among ABC transporters.
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Affiliation(s)
- Ágota Tóth
- grid.9966.00000 0001 2165 4861Inserm U1248 Pharmacology & Transplantation, ΩHealth Institute—Univ. Limoges, 2 rue du Prof. Descottes, 87000 F Limoges, France
| | - Angelika Janaszkiewicz
- grid.9966.00000 0001 2165 4861Inserm U1248 Pharmacology & Transplantation, ΩHealth Institute—Univ. Limoges, 2 rue du Prof. Descottes, 87000 F Limoges, France
| | - Veronica Crespi
- grid.9966.00000 0001 2165 4861Inserm U1248 Pharmacology & Transplantation, ΩHealth Institute—Univ. Limoges, 2 rue du Prof. Descottes, 87000 F Limoges, France
| | - Florent Di Meo
- Inserm U1248 Pharmacology & Transplantation, ΩHealth Institute-Univ. Limoges, 2 rue du Prof. Descottes, 87000 F, Limoges, France.
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Bronstein LG, Tóth Á, Cressey P, Rosilio V, Di Meo F, Makky A. Phospholipid-porphyrin conjugates: deciphering the driving forces behind their supramolecular assemblies. Nanoscale 2022; 14:7387-7407. [PMID: 35536011 DOI: 10.1039/d2nr01158a] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Phospholipid-porphyrin conjugates (PL-Por) are nowadays considered as a unique class of building blocks that can self-assemble into supramolecular structures that possess multifunctional properties and enhanced optoelectronics characteristics compared to their disassembled counterparts. However, despite their versatile properties, little is known about the impact of the packing parameter of PL-Por conjugates on their assembling mechanism and their molecular organization inside these assemblies. To gain a better understanding on their assembling properties, we synthesized two new series of PL-Por conjugates with different alkyl sn2-chain lengths linked via an amide bond to either pheophorbide-a (PhxLPC) or pyropheophorbide-a (PyrxLPC). By combining a variety of experimental techniques with molecular dynamics (MD) simulations, we investigated both the assembling and optical properties of the PL-Por either self-assembled or when incorporated into lipid bilayers. We demonstrated that independently of the linker length, PhxLPC assembled into closed ovoid structures, whereas PyrxLPC formed rigid open sheets. Interestingly, PyrxLPC assemblies displayed a significant red shift and narrowing of the Q-band indicating the formation of ordered J-aggregates. The MD simulations highlighted the central role of the interaction between porphyrin cores rather than the length difference between the two phospholipid chains in controlling the structure of the lipid bilayer membranes and thus their optical properties. Indeed, while PhxLPC have the tendency to form inter-leaflet π-stacked dimers, PyrxLPC conjugates formed dimers within the same leaflet. Altogether, this work could be used as guidelines for the design of new PL-Por conjugates that self-assemble into bilayer-like supramolecular structures with tunable morphology and optical properties.
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Affiliation(s)
- Louis-Gabriel Bronstein
- Université Paris-Saclay, CNRS, Institut Galien Paris-Saclay, 92296, Châtenay-Malabry, France.
| | - Ágota Tóth
- INSERM U1248 Pharmacology & Transplantation, Univ. Limoges, 2 rue du Prof. Descottes, F-87025, Limoges, France.
| | - Paul Cressey
- Université Paris-Saclay, CNRS, Institut Galien Paris-Saclay, 92296, Châtenay-Malabry, France.
| | - Véronique Rosilio
- Université Paris-Saclay, CNRS, Institut Galien Paris-Saclay, 92296, Châtenay-Malabry, France.
| | - Florent Di Meo
- INSERM U1248 Pharmacology & Transplantation, Univ. Limoges, 2 rue du Prof. Descottes, F-87025, Limoges, France.
| | - Ali Makky
- Université Paris-Saclay, CNRS, Institut Galien Paris-Saclay, 92296, Châtenay-Malabry, France.
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Ben Saad A, Vauthier V, Tóth Á, Janaszkiewicz A, Durand-Schneider AM, Bruneau A, Delaunay JL, Lapalus M, Mareux E, Garcin I, Gonzales E, Housset C, Aït-Slimane T, Jacquemin E, Di Meo F, Falguières T. Effect of CFTR correctors on the traffic and the function of intracellularly retained ABCB4 variants. Liver Int 2021; 41:1344-1357. [PMID: 33650203 DOI: 10.1111/liv.14839] [Citation(s) in RCA: 4] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/07/2020] [Revised: 01/25/2021] [Accepted: 02/23/2021] [Indexed: 12/13/2022]
Abstract
BACKGROUND & AIM ABCB4 is expressed at the canalicular membrane of hepatocytes. This ATP-binding cassette (ABC) transporter is responsible for the secretion of phosphatidylcholine into bile canaliculi. Missense genetic variations of ABCB4 are correlated with several rare cholestatic liver diseases, the most severe being progressive familial intrahepatic cholestasis type 3 (PFIC3). In a repurposing strategy to correct intracellularly retained ABCB4 variants, we tested 16 compounds previously validated as cystic fibrosis transmembrane conductance regulator (CFTR) correctors. METHODS The maturation, intracellular localization and activity of intracellularly retained ABCB4 variants were analyzed in cell models after treatment with CFTR correctors. In addition, in silico molecular docking calculations were performed to test the potential interaction of CFTR correctors with ABCB4. RESULTS We observed that the correctors C10, C13, and C17, as well as the combinations of C3 + C18 and C4 + C18, allowed the rescue of maturation and canalicular localization of four distinct traffic-defective ABCB4 variants. However, such treatments did not permit a rescue of the phosphatidylcholine secretion activity of these defective variants and were also inhibitory of the activity of wild type ABCB4. In silico molecular docking analyses suggest that these CFTR correctors might directly interact with transmembrane domains and/or ATP-binding sites of the transporter. CONCLUSION Our results illustrate the uncoupling between the traffic and the activity of ABCB4 because the same molecules can rescue the traffic of defective variants while they inhibit the secretion activity of the transporter. We expect that this study will help to design new pharmacological tools with potential clinical interest.
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Affiliation(s)
- Amel Ben Saad
- Inserm, Université Paris-Saclay, Physiopathogénèse et traitement des maladies du foie, UMR_S 1193, Orsay, France.,Inserm, Sorbonne Université, Centre de Recherche Saint-Antoine (CRSA), UMR_S 938, Institute of Cardiometabolism and Nutrition (ICAN), Paris, France
| | - Virginie Vauthier
- Inserm, Sorbonne Université, Centre de Recherche Saint-Antoine (CRSA), UMR_S 938, Institute of Cardiometabolism and Nutrition (ICAN), Paris, France.,Université de Paris, Institut Cochin, Inserm U1016, CNRS UMR 8104, Paris, France
| | - Ágota Tóth
- Inserm, Université de Limoges, UMR 1248 IPPRITT, Limoges, France
| | | | - Anne-Marie Durand-Schneider
- Inserm, Sorbonne Université, Centre de Recherche Saint-Antoine (CRSA), UMR_S 938, Institute of Cardiometabolism and Nutrition (ICAN), Paris, France
| | - Alix Bruneau
- Inserm, Sorbonne Université, Centre de Recherche Saint-Antoine (CRSA), UMR_S 938, Institute of Cardiometabolism and Nutrition (ICAN), Paris, France.,Department of Hepatology & Gastroenterology, Charité Universitätsmedizin Berlin, Berlin, Germany
| | - Jean-Louis Delaunay
- Inserm, Sorbonne Université, Centre de Recherche Saint-Antoine (CRSA), UMR_S 938, Institute of Cardiometabolism and Nutrition (ICAN), Paris, France
| | - Martine Lapalus
- Inserm, Université Paris-Saclay, Physiopathogénèse et traitement des maladies du foie, UMR_S 1193, Orsay, France
| | - Elodie Mareux
- Inserm, Université Paris-Saclay, Physiopathogénèse et traitement des maladies du foie, UMR_S 1193, Orsay, France
| | - Isabelle Garcin
- Inserm, Université Paris-Saclay, Physiopathogénèse et traitement des maladies du foie, UMR_S 1193, Orsay, France
| | - Emmanuel Gonzales
- Inserm, Université Paris-Saclay, Physiopathogénèse et traitement des maladies du foie, UMR_S 1193, Orsay, France.,Assistance Publique - Hôpitaux de Paris, CHU Bicêtre, Paediatric Hepatology & Paediatric Liver Transplant Department, Reference Center for Rare Paediatric Liver Diseases, FILFOIE, ERN Rare-Liver, Faculté de Médecine Paris-Saclay, Le Kremlin-Bicêtre, France
| | - Chantal Housset
- Inserm, Sorbonne Université, Centre de Recherche Saint-Antoine (CRSA), UMR_S 938, Institute of Cardiometabolism and Nutrition (ICAN), Paris, France.,Assistance Publique - Hôpitaux de Paris, Hôpital Saint-Antoine, Reference Center for Inflammatory Biliary Diseases and Autoimmune Hepatitis, FILFOIE, ERN Rare-Liver, Paris, France
| | - Tounsia Aït-Slimane
- Inserm, Sorbonne Université, Centre de Recherche Saint-Antoine (CRSA), UMR_S 938, Institute of Cardiometabolism and Nutrition (ICAN), Paris, France
| | - Emmanuel Jacquemin
- Inserm, Université Paris-Saclay, Physiopathogénèse et traitement des maladies du foie, UMR_S 1193, Orsay, France.,Assistance Publique - Hôpitaux de Paris, CHU Bicêtre, Paediatric Hepatology & Paediatric Liver Transplant Department, Reference Center for Rare Paediatric Liver Diseases, FILFOIE, ERN Rare-Liver, Faculté de Médecine Paris-Saclay, Le Kremlin-Bicêtre, France
| | - Florent Di Meo
- Inserm, Université de Limoges, UMR 1248 IPPRITT, Limoges, France
| | - Thomas Falguières
- Inserm, Université Paris-Saclay, Physiopathogénèse et traitement des maladies du foie, UMR_S 1193, Orsay, France
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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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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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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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10
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Burat B, Faucher Q, Čechová P, Arnion H, Di Meo F, Sauvage F, Marquet P, Essig M. Cyclosporine A inhibits MRTF-SRF signaling through Na +/K + ATPase inhibition and actin remodeling. FASEB Bioadv 2019; 1:561-578. [PMID: 32123851 PMCID: PMC6996406 DOI: 10.1096/fba.2019-00027] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2019] [Revised: 03/22/2019] [Accepted: 07/25/2019] [Indexed: 01/07/2023] Open
Abstract
Calcineurin inhibitors (CNI) are the pillars of immunosuppression in transplantation. However, they display a potent nephrotoxicity whose mechanisms remained widely unsolved. We used an untargeted quantitative proteomic approach (iTRAQ technology) to highlight new targets of CNI in renal proximal tubular cells (RPTCs). CNI-treated RPTCs proteome displayed an over-representation of actin-binding proteins with a CNI-specific expression profile. Cyclosporine A (CsA) induced F-actin remodeling and depolymerization, decreased F-actin-stabilizing, polymerization-promoting cofilin (CFL) oligomers, and inhibited the G-actin-regulated serum response factor (SRF) pathway. Inhibition of CFL canonical phosphorylation pathway reproduced CsA effects; however, S3-R, an analogue of the phosphorylation site of CFL prevented the effects of CsA which suggests that CsA acted independently from the canonical CFL regulation. CFL is known to be regulated by the Na+/K+-ATPase. Molecular docking calculations identified two inhibiting sites of CsA on Na+/K+-ATPase and a 23% decrease in Na+/K+-ATPase activity of RPTCs was observed with CsA. Ouabain, a specific inhibitor of Na+/K+-ATPase also reproduced CsA effects on actin organization and SRF activity. Altogether, these results described a new original pathway explaining CsA nephrotoxicity.
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Affiliation(s)
- Bastien Burat
- Centre for Biology & Health Research, UMR INSERM 1248 IPPRIT (Individual Profiling and Prevention of RIsks in Transplantation)Limoges UniversityLimogesFrance
| | - Quentin Faucher
- Centre for Biology & Health Research, UMR INSERM 1248 IPPRIT (Individual Profiling and Prevention of RIsks in Transplantation)Limoges UniversityLimogesFrance
| | - Petra Čechová
- Department of Biophysics, Centre of the Region Haná for Biotechnological and Agricultural Research, Faculty of SciencePalacký University OlomoucOlomoucCzech Republic
- Department of Physical Chemistry, Regional Centre of Advanced Technologies and Materials, Faculty of SciencePalacký University OlomoucOlomoucCzech Republic
| | - Hélène Arnion
- Centre for Biology & Health Research, UMR INSERM 1248 IPPRIT (Individual Profiling and Prevention of RIsks in Transplantation)Limoges UniversityLimogesFrance
| | - Florent Di Meo
- Centre for Biology & Health Research, UMR INSERM 1248 IPPRIT (Individual Profiling and Prevention of RIsks in Transplantation)Limoges UniversityLimogesFrance
| | - François‐Ludovic Sauvage
- Centre for Biology & Health Research, UMR INSERM 1248 IPPRIT (Individual Profiling and Prevention of RIsks in Transplantation)Limoges UniversityLimogesFrance
| | - Pierre Marquet
- Centre for Biology & Health Research, UMR INSERM 1248 IPPRIT (Individual Profiling and Prevention of RIsks in Transplantation)Limoges UniversityLimogesFrance
- Department of Pharmacology and ToxicologyLimoges University HospitalLimogesFrance
| | - Marie Essig
- Centre for Biology & Health Research, UMR INSERM 1248 IPPRIT (Individual Profiling and Prevention of RIsks in Transplantation)Limoges UniversityLimogesFrance
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11
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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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12
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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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13
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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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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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15
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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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16
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Elie M, Weber MD, Di Meo F, Sguerra F, Lohier J, Pansu RB, Renaud J, Hamel M, Linares M, Costa RD, Gaillard S. Role of the Bridging Group in Bis‐Pyridyl Ligands: Enhancing Both the Photo‐ and Electroluminescent Features of Cationic (IPr)Cu
I
Complexes. Chemistry 2017; 23:16328-16337. [DOI: 10.1002/chem.201703270] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2017] [Indexed: 12/18/2022]
Affiliation(s)
- Margaux Elie
- Normandie University LCMT, ENSICAEN, UNICAEN, CNRS 14000 Caen France
| | - Michael D. Weber
- Department of Chemistry and Pharmacy University of Erlangen-Nuremberg Egerlandstr. 3 91058 Erlangen Germany
| | - Florent Di Meo
- INSERM UMR 850 Univ. Limoges, Faculty of Pharmacy 2 rue du Dr. Marcland 87025 Limoges France
| | - Fabien Sguerra
- CEA, LIST Laboratoire Capteurs et Architectures Électroniques 91191 Gif-sur-Yvette Cedex France
| | | | - Robert B. Pansu
- PPSM, CNRS, UMR8531 & Inst. d'Alembert FR3242, ENS Cachan Paris Saclay University France
| | - Jean‐Luc Renaud
- Normandie University LCMT, ENSICAEN, UNICAEN, CNRS 14000 Caen France
| | - Matthieu Hamel
- CEA, LIST Laboratoire Capteurs et Architectures Électroniques 91191 Gif-sur-Yvette Cedex France
| | - Mathieu Linares
- Division of Theoretical Chemistry and Biology, School of Biotechnology KTH Royal Institute of Technology 106 91 Stockholm Sweden
- Swedish e-Science Research Centre KTH Royal Institute of Technology 104 50 Stockholm Sweden
| | - Rubén D. Costa
- Department of Chemistry and Pharmacy University of Erlangen-Nuremberg Egerlandstr. 3 91058 Erlangen Germany
- IMDEA Materials C/ Eric Kandel 2, Tecnogetafe 28906 Getafe, Madrid Spain
| | - Sylvain Gaillard
- Normandie University LCMT, ENSICAEN, UNICAEN, CNRS 14000 Caen France
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17
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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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18
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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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19
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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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20
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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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21
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Elie M, Sguerra F, Di Meo F, Weber MD, Marion R, Grimault A, Lohier JF, Stallivieri A, Brosseau A, Pansu RB, Renaud JL, Linares M, Hamel M, Costa RD, Gaillard S. Designing NHC-Copper(I) Dipyridylamine Complexes for Blue Light-Emitting Electrochemical Cells. ACS Appl Mater Interfaces 2016; 8:14678-91. [PMID: 27224961 DOI: 10.1021/acsami.6b04647] [Citation(s) in RCA: 68] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
This study presents the influence of various substituents on the photophysical features of heteroleptic copper(I) complexes bearing both N-heterocyclic carbene (NHC) and dipyridylamine (dpa = dipyridylamine skeleton corresponding to ligand L1) ligands. The luminescent properties have been compared to our recently reported archetypal blue emitting [Cu(IPr)(dpa)][PF6] complex. The choice of the substituents on both ligands has been guided to explore the effect of the electron donor/acceptor and "push-pull" on the emission wavelengths and photoluminescence quantum yields. A selection of the best candidates in terms of their photophysical features were applied for developing the first blue light-emitting electrochemical cells (LECs) based on copper(I) complexes. The device analysis suggests that the main concern is the moderate redox stability of the complexes under high applied driving currents, leading to devices with moderate stabilities pointing to a proof-of-concept for further development. Nevertheless, under low applied driving currents the blue emission is stable, showing performance levels competitive to those reported for blue LECs based on iridium(III) complexes. Overall, this work provides valuable guidelines to tackle the design of enhanced NHC copper complexes for lighting applications in the near future.
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Affiliation(s)
- Margaux Elie
- Normandie Université , LCMT, ENSICAEN, UNICAEN, CNRS, 14000-Normandie, France
| | - Fabien Sguerra
- CEA, LIST , Laboratoire Capteurs et Architectures Électroniques, F-91191 Gif-sur-Yvette Cedex, France
| | - Florent Di Meo
- Division of Theoretical Chemistry, Department of Physics, Chemistry and Biology, Linköping University , SE-581 83 Linköping, Sweden
| | - Michael D Weber
- Department of Chemistry and Pharmacy, University of Erlangen-Nuremberg , Egerlandstrasse 3, DE-91058 Erlangen, Germany
| | - Ronan Marion
- Normandie Université , LCMT, ENSICAEN, UNICAEN, CNRS, 14000-Normandie, France
| | - Adèle Grimault
- Normandie Université , LCMT, ENSICAEN, UNICAEN, CNRS, 14000-Normandie, France
| | | | - Aurélie Stallivieri
- Normandie Université , LCMT, ENSICAEN, UNICAEN, CNRS, 14000-Normandie, France
| | - Arnaud Brosseau
- PPSM, CNRS, UMR8531 & Institut d'Alembert FR3242, ENS Cachan, Paris Saclay University , 91190 Saint-Aubin, France
| | - Robert B Pansu
- PPSM, CNRS, UMR8531 & Institut d'Alembert FR3242, ENS Cachan, Paris Saclay University , 91190 Saint-Aubin, France
| | - Jean-Luc Renaud
- Normandie Université , LCMT, ENSICAEN, UNICAEN, CNRS, 14000-Normandie, France
| | - Mathieu Linares
- Division of Theoretical Chemistry, Department of Physics, Chemistry and Biology, Linköping University , SE-581 83 Linköping, Sweden
- Swedish e-Science Research Centre (SeRC), Linköping University , SE-581 83 Linköping, Sweden
| | - Matthieu Hamel
- CEA, LIST , Laboratoire Capteurs et Architectures Électroniques, F-91191 Gif-sur-Yvette Cedex, France
| | - Rubén D Costa
- Department of Chemistry and Pharmacy, University of Erlangen-Nuremberg , Egerlandstrasse 3, DE-91058 Erlangen, Germany
| | - Sylvain Gaillard
- Normandie Université , LCMT, ENSICAEN, UNICAEN, CNRS, 14000-Normandie, France
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22
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Marion R, Sguerra F, Di Meo F, Sauvageot E, Lohier JF, Daniellou R, Renaud JL, Linares M, Hamel M, Gaillard S. Correction to NHC Copper(I) Complexes Bearing Dipyridylamine Ligands: Synthesis, Structural, and Photoluminescent Studies. Inorg Chem 2016; 55:4068. [DOI: 10.1021/acs.inorgchem.6b00705] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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23
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Berrocal JA, Di Meo F, García-Iglesias M, Gosens RPJ, Meijer EW, Linares M, Palmans ARA. Consequences of conformational flexibility in hydrogen-bond-driven self-assembly processes. Chem Commun (Camb) 2016; 52:10870-3. [DOI: 10.1039/c6cc05593a] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Chiral, conformationally flexible C3-symmetrical trisamides self-assemble into helical aggregates but a helical bias is only expressed in linear alkane solvents and not in cyclic ones.
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Affiliation(s)
- José Augusto Berrocal
- Institute for Complex Molecular Systems
- Eindhoven University of Technology
- 5600 MB Eindhoven
- The Netherlands
| | - Florent Di Meo
- Department of Physics
- Chemistry and Biology (IFM)
- Linköping University
- SE-581 83 Linköping
- Sweden
| | - Miguel García-Iglesias
- Institute for Complex Molecular Systems
- Eindhoven University of Technology
- 5600 MB Eindhoven
- The Netherlands
| | - Ronald P. J. Gosens
- Institute for Complex Molecular Systems
- Eindhoven University of Technology
- 5600 MB Eindhoven
- The Netherlands
| | - E. W. Meijer
- Institute for Complex Molecular Systems
- Eindhoven University of Technology
- 5600 MB Eindhoven
- The Netherlands
| | - Mathieu Linares
- Department of Physics
- Chemistry and Biology (IFM)
- Linköping University
- SE-581 83 Linköping
- Sweden
| | - Anja R. A. Palmans
- Institute for Complex Molecular Systems
- Eindhoven University of Technology
- 5600 MB Eindhoven
- The Netherlands
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24
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Oliveras-González C, Di Meo F, González-Campo A, Beljonne D, Norman P, Simón-Sorbed M, Linares M, Amabilino DB. Bottom-Up Hierarchical Self-Assembly of Chiral Porphyrins through Coordination and Hydrogen Bonds. J Am Chem Soc 2015; 137:15795-808. [PMID: 26595320 DOI: 10.1021/jacs.5b08081] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [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
A series of chiral synthetic compounds is reported that shows intricate but specific hierarchical assembly because of varying positions of coordination and hydrogen bonds. The evolution of the aggregates (followed by absorption spectroscopy and temperature-dependent circular dichroism studies in solution) reveal the influence of the proportion of stereogenic centers in the side groups connected to the chromophore ring in their optical activity and the important role of pyridyl groups in the self-assembly of these chiral macrocycles. The optical activity spans 2 orders of magnitude depending on composition and constitution. Two of the aggregates show very high optical activity even though the isolated chromophores barely give a circular dichroism signal. Molecular modeling of the aggregates, starting from the pyridine-zinc(II) porphyrin interaction and working up, and calculation of the circular dichroism signal confirm the origin of this optical activity as the chiral supramolecular organization of the molecules. The aggregates show a broad absorption range, between approximately 390 and 475 nm for the transitions associated with the Soret region alone, that spans wavelengths far more than the isolated chromophore. The supramolecular assemblies of the metalloporphyrins in solution were deposited onto highly oriented pyrolitic graphite in order to study their hierarchy in assembly by atomic force microscopy. Zero and one-dimensional aggregates were observed, and a clear dependence on deposition temperature was shown, indicating that the hierarchical assembly took place largely in solution. Moreover, scanning electron microscopy images of porphyrins and metalloporphyrins precipitated under out-of-equilibrium conditions showed the dependence of the number and position of chiral amide groups in the formation of a fibrillar nanomaterial. The combination of coordination and hydrogen bonding in the complicated assembly of these molecules-where there is a clear hierarchy for zinc(II)-pyridyl interaction followed by hydrogen-bonding between amide groups, and then van der Waals interactions-paves the way for the preparation of molecular materials with multiple chromophore environments.
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Affiliation(s)
- Cristina Oliveras-González
- Institut de Ciència de Materials de Barcelona (ICMAB-CSIC), Campus Universitari de Bellaterra , 08193 Cerdanyola del Vallès, Catalonia, Spain
| | - Florent Di Meo
- Department of Physics, Chemistry and Biology (IFM), Linköping University , SE-58 583 Linköping, Sweden
| | - Arántzazu González-Campo
- Institut de Ciència de Materials de Barcelona (ICMAB-CSIC), Campus Universitari de Bellaterra , 08193 Cerdanyola del Vallès, Catalonia, Spain
| | - David Beljonne
- Laboratory of Chemistry for Novel Materials, Mons University , Place du Parc, Mons B-9000, Belgium
| | - Patrick Norman
- Department of Physics, Chemistry and Biology (IFM), Linköping University , SE-58 583 Linköping, Sweden
| | - Maite Simón-Sorbed
- Institut de Ciència de Materials de Barcelona (ICMAB-CSIC), Campus Universitari de Bellaterra , 08193 Cerdanyola del Vallès, Catalonia, Spain
| | - Mathieu Linares
- Department of Physics, Chemistry and Biology (IFM), Linköping University , SE-58 583 Linköping, Sweden
| | - David B Amabilino
- Institut de Ciència de Materials de Barcelona (ICMAB-CSIC), Campus Universitari de Bellaterra , 08193 Cerdanyola del Vallès, Catalonia, Spain.,School of Chemistry, The University of Nottingham , University Park, Nottingham NG7 2RD, United Kingdom
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25
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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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26
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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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27
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Di Meo F, Pedersen MN, Rubio-Magnieto J, Surin M, Linares M, Norman P. DNA Electronic Circular Dichroism on the Inter-Base Pair Scale: An Experimental-Theoretical Case Study of the AT Homo-Oligonucleotide. J Phys Chem Lett 2015; 6:355-359. [PMID: 26261947 DOI: 10.1021/jz502696t] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [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] [Indexed: 06/04/2023]
Abstract
A successful elucidation of the near-ultraviolet electronic circular dichroism spectrum of a short double-stranded DNA is reported. Time-dependent density functional theory methods are shown to accurately predict spectra and assign bands on the microscopic base-pair scale, a finding that opens the field for using circular dichroism spectroscopy as a sensitive nanoscale probe of DNA to reveal its complex interactions with the environment.
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Affiliation(s)
- Florent Di Meo
- †Department of Physics, Chemistry and Biology (IFM), Linköping University, SE-58183 Linköping, Sweden
| | - Morten N Pedersen
- †Department of Physics, Chemistry and Biology (IFM), Linköping University, SE-58183 Linköping, Sweden
- ‡Department of Physics, Chemistry and Pharmacy, University of Southern Denmark, Campusvej 55, DK-5230 Odense M, Denmark
| | - Jenifer Rubio-Magnieto
- ||Laboratory for Chemistry of Novel Materials, Center for Innovation and Research in Materials and Polymers, University of Mons - UMONS, 20 Place du Parc, B-7000 Mons, Belgium
| | - Mathieu Surin
- ||Laboratory for Chemistry of Novel Materials, Center for Innovation and Research in Materials and Polymers, University of Mons - UMONS, 20 Place du Parc, B-7000 Mons, Belgium
| | - Mathieu Linares
- †Department of Physics, Chemistry and Biology (IFM), Linköping University, SE-58183 Linköping, Sweden
- ||Laboratory for Chemistry of Novel Materials, Center for Innovation and Research in Materials and Polymers, University of Mons - UMONS, 20 Place du Parc, B-7000 Mons, Belgium
| | - Patrick Norman
- †Department of Physics, Chemistry and Biology (IFM), Linköping University, SE-58183 Linköping, Sweden
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28
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Rubio-Magnieto J, Di Meo F, Lo M, Delcourt C, Clément S, Norman P, Richeter S, Linares M, Surin M. Binding modes of a core-extended metalloporphyrin to human telomeric DNA G-quadruplexes. Org Biomol Chem 2015; 13:2453-63. [DOI: 10.1039/c4ob02097a] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
A novel π-extended NiII-porphyrin shows a high selectivity towards human telomeric G-quadruplexes.
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Affiliation(s)
- Jenifer Rubio-Magnieto
- Laboratory for Chemistry of Novel Materials
- Center for Innovation in Materials and Polymers
- University of Mons – UMONS
- B-7000 Mons
- Belgium
| | - Florent Di Meo
- Department of Physics
- Chemistry and Biology (IFM) Linköping University
- SE-581 83 Linköping
- Sweden
| | - Mamadou Lo
- Institut Charles Gerhardt – UMR 5253
- Université de Montpellier 2 – CC1701
- F-34095 Montpellier Cedex 05
- France
| | - Cécile Delcourt
- Laboratory for Chemistry of Novel Materials
- Center for Innovation in Materials and Polymers
- University of Mons – UMONS
- B-7000 Mons
- Belgium
| | - Sébastien Clément
- Institut Charles Gerhardt – UMR 5253
- Université de Montpellier 2 – CC1701
- F-34095 Montpellier Cedex 05
- France
| | - Patrick Norman
- Department of Physics
- Chemistry and Biology (IFM) Linköping University
- SE-581 83 Linköping
- Sweden
| | - Sébastien Richeter
- Institut Charles Gerhardt – UMR 5253
- Université de Montpellier 2 – CC1701
- F-34095 Montpellier Cedex 05
- France
| | - Mathieu Linares
- Laboratory for Chemistry of Novel Materials
- Center for Innovation in Materials and Polymers
- University of Mons – UMONS
- B-7000 Mons
- Belgium
| | - Mathieu Surin
- Laboratory for Chemistry of Novel Materials
- Center for Innovation in Materials and Polymers
- University of Mons – UMONS
- B-7000 Mons
- Belgium
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29
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Marion R, Sguerra F, Di Meo F, Sauvageot E, Lohier JF, Daniellou R, Renaud JL, Linares M, Hamel M, Gaillard S. NHC Copper(I) Complexes Bearing Dipyridylamine Ligands: Synthesis, Structural, and Photoluminescent Studies. Inorg Chem 2014; 53:9181-91. [DOI: 10.1021/ic501230m] [Citation(s) in RCA: 88] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Ronan Marion
- Laboratoire
de Chimie Moléculaire et Thioorganique, Normandie University, Université de Caen Basse Normandie, CNRS, UMR 6507, 6, Boulevard
du Maréchal Juin, 14050 Caen, France
| | - Fabien Sguerra
- Laboratoire Capteurs
et Architectures Electroniques, CEA, LIST, F-91191 Gif-sur-Yvette
Cedex, France
| | - Florent Di Meo
- Department of Physics, Chemistry,
and Biology, Linköping University, SE-581 83 Linköping, Sweden
| | - Elodie Sauvageot
- Laboratoire
de Chimie Moléculaire et Thioorganique, Normandie University, Université de Caen Basse Normandie, CNRS, UMR 6507, 6, Boulevard
du Maréchal Juin, 14050 Caen, France
| | - Jean-François Lohier
- Laboratoire
de Chimie Moléculaire et Thioorganique, Normandie University, Université de Caen Basse Normandie, CNRS, UMR 6507, 6, Boulevard
du Maréchal Juin, 14050 Caen, France
| | - Richard Daniellou
- Institut de Chimie Organique et Analytique, University of Orléans, CNRS, UMR 7311 45067 Orléans, France
| | - Jean-Luc Renaud
- Laboratoire
de Chimie Moléculaire et Thioorganique, Normandie University, Université de Caen Basse Normandie, CNRS, UMR 6507, 6, Boulevard
du Maréchal Juin, 14050 Caen, France
| | - Mathieu Linares
- Department of Physics, Chemistry,
and Biology, Linköping University, SE-581 83 Linköping, Sweden
| | - Matthieu Hamel
- Laboratoire Capteurs
et Architectures Electroniques, CEA, LIST, F-91191 Gif-sur-Yvette
Cedex, France
| | - Sylvain Gaillard
- Laboratoire
de Chimie Moléculaire et Thioorganique, Normandie University, Université de Caen Basse Normandie, CNRS, UMR 6507, 6, Boulevard
du Maréchal Juin, 14050 Caen, France
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30
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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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Rustioni L, Di Meo F, Guillaume M, Failla O, Trouillas P. Tuning color variation in grape anthocyanins at the molecular scale. Food Chem 2013; 141:4349-57. [DOI: 10.1016/j.foodchem.2013.07.006] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2013] [Revised: 06/28/2013] [Accepted: 07/01/2013] [Indexed: 11/30/2022]
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Anouar EH, Raweh S, Bayach I, Taha M, Baharudin MS, Di Meo F, Hasan MH, Adam A, Ismail NH, Weber JFF, Trouillas P. Antioxidant properties of phenolic Schiff bases: structure-activity relationship and mechanism of action. J Comput Aided Mol Des 2013; 27:951-64. [PMID: 24243063 DOI: 10.1007/s10822-013-9692-0] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2013] [Accepted: 11/09/2013] [Indexed: 11/27/2022]
Abstract
Phenolic Schiff bases are known for their diverse biological activities and ability to scavenge free radicals. To elucidate (1) the structure-antioxidant activity relationship of a series of thirty synthetic derivatives of 2-methoxybezohydrazide phenolic Schiff bases and (2) to determine the major mechanism involved in free radical scavenging, we used density functional theory calculations (B3P86/6-31+(d,p)) within polarizable continuum model. The results showed the importance of the bond dissociation enthalpies (BDEs) related to the first and second (BDEd) hydrogen atom transfer (intrinsic parameters) for rationalizing the antioxidant activity. In addition to the number of OH groups, the presence of a bromine substituent plays an interesting role in modulating the antioxidant activity. Theoretical thermodynamic and kinetic studies demonstrated that the free radical scavenging by these Schiff bases mainly proceeds through proton-coupled electron transfer rather than sequential proton loss electron transfer, the latter mechanism being only feasible at relatively high pH.
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Affiliation(s)
- El Hassane Anouar
- Atta-ur-Rahman Institute for Natural Product Discovery (RiND), Universiti Teknologi MARA, Kampus Puncak Alam, 42300 Bandar Puncak Alam, Shah Alam, Selangor DE, Malaysia,
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Velu SS, Di Meo F, Trouillas P, Sancho-Garcia JC, Weber JFF. Regio- and stereocontrolled synthesis of oligostilbenoids: theoretical highlights at the supramolecular level. J Nat Prod 2013; 76:538-546. [PMID: 23441649 DOI: 10.1021/np300705p] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Oligostilbenoids (e.g., ampelopsin F, viniferin, pallidol) result from homogeneous or heterogeneous coupling of monomeric stilbenoid units, leading to various chemical structures. Oligostilbenoid synthesis is regio- and stereocontrolled. To tackle this regio- and stereocontrol, a supramolecular chemistry approach is required that can be achieved by quantum chemistry. The stability of noncovalent π-stacks, formed between two stilbenoid units prior to oxidation, is accurately evaluated with density functional theory (DFT) including dispersive effects (within the DFT-D formalism). These noncovalent arrangements drive the regiocontrol. The rest of the chemical pathway is a succession of dearomatization and rearomatization stages. The thermodynamics and kinetics of the processes are calculated with classical hybrid functionals. This study allows discrimination between the two main possible chemical pathways, namely, radical-neutral and radical-radical reactions. The former appears more likely, thermodynamics and kinetics being in perfect agreement with the experimental 1:2 ratio obtained for ampelopsin F:pallidol analogues, respectively.
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Affiliation(s)
- Saraswati S Velu
- Atta-ur-Rahman Research Institute for Natural Product Discovery (RiND), Faculty of Pharmacy, Universiti Teknologi MARA, Campus Puncak Alam, 42300 Bandar Puncak Alam, Selangor D. E., Malaysia
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Di Meo F, Lemaur V, Cornil J, Lazzaroni R, Duroux JL, Olivier Y, Trouillas P. Free radical scavenging by natural polyphenols: atom versus electron transfer. J Phys Chem A 2013; 117:2082-92. [PMID: 23418927 DOI: 10.1021/jp3116319] [Citation(s) in RCA: 181] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Polyphenols (synthetically modified or directly provided by human diet) scavenge free radicals by H-atom transfer and may thus decrease noxious effects due to oxidative stress. Free radical scavenging by polyphenols has been widely theoretically studied from the thermodynamic point of view whereas the kinetic point of view has been much less addressed. The present study describes kinetic-based structure-activity relationship for quercetin. This compound is very characteristic of the wide flavonoid subclass of polyphenols. H-atom transfer is a mechanism based on either atom or electron transfer. This is analyzed here by quantum chemical calculations, which support the knowledge acquired from experimental studies. The competition between the different processes is discussed in terms of the nature of the prereaction complexes, the pH, the formation of activated-deprotonated forms, and the atom- and electron-transfer efficiency. The role of the catechol moiety and the 3-OH group of quercetin as scavengers of different types of free radicals (CH3OO(•), CH3O(•), (•)OH, and (•)CH2OH) is rationalized. Identifying the exact mechanism and accurately evaluating kinetics is of fundamental importance to understand antioxidant behavior in physiological environments.
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Affiliation(s)
- Florent Di Meo
- Laboratoire de Chimie des Substances Naturelles EA-1069, Faculté de Pharmacie, Université de Limoges, 2 rue du Docteur Marcland, Limoges Cedex, France
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Di Meo F, Steel M, Nicolas P, Marquet P, Duroux JL, Trouillas P. Acylglucuronide in alkaline conditions: migration vs. hydrolysis. J Mol Model 2013; 19:2423-32. [PMID: 23420401 DOI: 10.1007/s00894-013-1790-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2012] [Accepted: 02/01/2013] [Indexed: 10/27/2022]
Abstract
This work rationalizes the glucuronidation process (one of the reactions of the phase II metabolism) for drugs having a carboxylic acid moiety. At this stage, acylglucuronides (AG) metabolites are produced, that have largely been reported in the literature for various drugs (e.g., mycophenolic acid (MPA), diclofenac, ibuprofen, phenylacetic acids). The competition between migration and hydrolysis is rationalized by adequate quantum calculations, combing MP2 and density functional theory (DFT) methods. At the molecular scale, the former process is a real rotation of the drug around the glucuconic acid. This chemical-engine provides four different metabolites with various toxicities. Migration definitely appears feasible under alkaline conditions, making proton release from the OH groups. The latter reaction (hydrolysis) releases the free drug, so the competition is of crucial importance to tackle drug action and elimination. From the theoretical data, both migration and hydrolysis appear kinetically and thermodynamically favored, respectively.
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Affiliation(s)
- Florent Di Meo
- School of Pharmacy, Université de Limoges, 2 rue du Docteur Marcland, 87025 Limoges Cedex, France.
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Ruiz A, Coro J, Almagro L, Ruiz JA, Molero D, Maroto EE, Filippone S, Herranz MÁ, Martínez-Álvarez R, Sancho-García JC, Meo FD, Suárez M, Martín N. Diastereoselective Synthesis of C60/Steroid Conjugates. J Org Chem 2013; 78:2819-26. [DOI: 10.1021/jo302528t] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- Alberto Ruiz
- Laboratorio de Síntesis
Orgánica, Facultad de Química, Universidad de la Habana, 10400 La Habana, Cuba
| | - Julieta Coro
- Laboratorio de Síntesis
Orgánica, Facultad de Química, Universidad de la Habana, 10400 La Habana, Cuba
| | - Luis Almagro
- Laboratorio de Síntesis
Orgánica, Facultad de Química, Universidad de la Habana, 10400 La Habana, Cuba
| | - José A. Ruiz
- Centro de Química Biomolecular, 11600 La Habana, Cuba
| | | | | | | | | | | | | | - Florent Di Meo
- Departamento de Química-Física, Universidad de Alicante, E-03080 Alicante, Spain
| | - Margarita Suárez
- Laboratorio de Síntesis
Orgánica, Facultad de Química, Universidad de la Habana, 10400 La Habana, Cuba
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Nave F, Brás NF, Cruz L, Teixeira N, Mateus N, Ramos MJ, Di Meo F, Trouillas P, Dangles O, De Freitas V. Influence of a Flavan-3-ol Substituent on the Affinity of Anthocyanins (Pigments) toward Vinylcatechin Dimers and Proanthocyanidins (Copigments). J Phys Chem B 2012; 116:14089-99. [DOI: 10.1021/jp307782y] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
| | | | | | | | | | | | - Florent Di Meo
- LCSN-EA1069, Université de Limoges, 2 rue du Dr Marcland, 87025 Limoges, France
| | - Patrick Trouillas
- LCSN-EA1069, Université de Limoges, 2 rue du Dr Marcland, 87025 Limoges, France
| | - Olivier Dangles
- Université d’Avignon et des Pays de Vaucluse, INRA, UMR408,
F-84000 Avignon, France
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Millot M, Di Meo F, Tomasi S, Boustie J, Trouillas P. Photoprotective capacities of lichen metabolites: A joint theoretical and experimental study. Journal of Photochemistry and Photobiology B: Biology 2012; 111:17-26. [DOI: 10.1016/j.jphotobiol.2012.03.005] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/29/2011] [Revised: 02/08/2012] [Accepted: 03/13/2012] [Indexed: 10/28/2022]
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Di Meo F, Sancho Garcia JC, Dangles O, Trouillas P. Highlights on Anthocyanin Pigmentation and Copigmentation: A Matter of Flavonoid π-Stacking Complexation To Be Described by DFT-D. J Chem Theory Comput 2012; 8:2034-43. [PMID: 26593835 DOI: 10.1021/ct300276p] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Anthocyanidins are a class of π-conjugated systems responsible for red, blue, and purple colors of plants. They exhibit the capacity of aggregation in the presence of other natural compounds including flavonols. Such complexations induce color modulation in plants, which is known as copigmentation. It is largely driven by π-interactions existing between pigments and copigments. In this work, the energies of copigmentation-complexation and self-association are systematically evaluated for an anthocyanidin/flavonol couple prototype (3-O-methylcyanidin/quercetin). To describe noncovalent interactions, DFT-D appears mandatory to reach a large accuracy. Due to the chemical complexity of this phenomenon, we also aim at assessing the relevance of both B3P86-D2 and ωB97X-D functionals. The benchmarking has shown that B3P86-D2 possesses enough accuracy when dealing with π-π interactions with respect to both spin component scaled Møller-Plesset second-order perturbation theory post Hartree-Fock method and experimental data. UV-vis absorption properties are then evaluated with time-dependent DFT for the different complexes. The use of range-separated hybrid functionals, such as ωB97X-D, helped to correctly disentangle and interpret the origin of the UV-vis experimental shifts attributed to the subtle copigmentation phenomenon.
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Affiliation(s)
- Florent Di Meo
- Université de Limoges , LCSN-EA 1069, Faculté de Pharmacie, 2 rue du Docteur Marcland, F-87025 Limoges, France
| | | | - Olivier Dangles
- University of Avignon , INRA, UMR408, 84000, Avignon, France
| | - Patrick Trouillas
- Université de Limoges , LCSN-EA 1069, Faculté de Pharmacie, 2 rue du Docteur Marcland, F-87025 Limoges, France.,Laboratoire de Chimie des Matériaux Nouveaux, Université de Mons , Place du Parc 20, B-7000 Mons, Belgium
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