1
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Leclaire J, Heldebrant DJ, Grubel K, Septavaux J, Hennebelle M, Walter E, Chen Y, Bañuelos JL, Zhang D, Nguyen MT, Ray D, Allec SI, Malhotra D, Joo W, King J. Tetrameric self-assembling of water-lean solvents enables carbamate anhydride-based CO 2 capture chemistry. Nat Chem 2024:10.1038/s41557-024-01495-z. [PMID: 38589626 DOI: 10.1038/s41557-024-01495-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2023] [Accepted: 02/28/2024] [Indexed: 04/10/2024]
Abstract
Carbon capture, utilization and storage is a key yet cost-intensive technology for the fight against climate change. Single-component water-lean solvents have emerged as promising materials for post-combustion CO2 capture, but little is known regarding their mechanism of action. Here we present a combined experimental and modelling study of single-component water-lean solvents, and we find that CO2 capture is accompanied by the self-assembly of reverse-micelle-like tetrameric clusters in solution. This spontaneous aggregation leads to stepwise cooperative capture phenomena with highly contrasting mechanistic and thermodynamic features. The emergence of well-defined supramolecular architectures displaying a hydrogen-bonded internal core, reminiscent of enzymatic active sites, enables the formation of CO2-containing molecular species such as carbamic acid, carbamic anhydride and alkoxy carbamic anhydrides. This system extends the scope of adducts and mechanisms observed during carbon capture. It opens the way to materials with a higher CO2 storage capacity and provides a means for carbamates to potentially act as initiators for future oligomerization or polymerization of CO2.
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Affiliation(s)
- Julien Leclaire
- CNRS ICBMS UMR 5246, Universite Claude Bernard Lyon 1, Villeurbanne, France.
| | - David J Heldebrant
- Pacific Northwest National Laboratory, Richland, WA, USA.
- Washington State University Pullman, Pullman, WA, USA.
| | | | - Jean Septavaux
- CNRS ICBMS UMR 5246, Universite Claude Bernard Lyon 1, Villeurbanne, France
- Secoya Technologies, Ottignies-Louvain-la-Neuve, Belgium
| | - Marc Hennebelle
- CNRS ICBMS UMR 5246, Universite Claude Bernard Lyon 1, Villeurbanne, France
| | - Eric Walter
- Pacific Northwest National Laboratory, Richland, WA, USA
| | - Ying Chen
- Pacific Northwest National Laboratory, Richland, WA, USA
| | | | - Difan Zhang
- Pacific Northwest National Laboratory, Richland, WA, USA
| | | | - Debmalya Ray
- Pacific Northwest National Laboratory, Richland, WA, USA
- Oak Ridge National Laboratory, Oak Ridge, TN, USA
| | - Sarah I Allec
- Pacific Northwest National Laboratory, Richland, WA, USA
| | | | - Wontae Joo
- Pacific Northwest National Laboratory, Richland, WA, USA
| | - Jaelynne King
- Pacific Northwest National Laboratory, Richland, WA, USA
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2
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Zhang Y, Ourri B, Skowron PT, Jeamet E, Chetot T, Duchamp C, Belenguer AM, Vanthuyne N, Cala O, Dumont E, Mandal PK, Huc I, Perret F, Vial L, Leclaire J. Self-assembly of achiral building blocks into chiral cyclophanes using non-directional interactions. Chem Sci 2023; 14:7126-7135. [PMID: 37416699 PMCID: PMC10321575 DOI: 10.1039/d3sc01235b] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2023] [Accepted: 05/23/2023] [Indexed: 07/08/2023] Open
Abstract
The diastereoselective assembly of achiral constituents through a single spontaneous process into complex covalent architectures bearing multiple stereogenic elements still remains a challenge for synthetic chemists. Here, we show that such an extreme level of control can be achieved by implementing stereo-electronic information on synthetic organic building blocks and templates and that non-directional interactions (i.e., electrostatic and steric interactions) can transfer this information to deliver, after self-assembly, high-molecular weight macrocyclic species carrying up to 16 stereogenic elements. Beyond the field of supramolecular chemistry, this proof of concept should stimulate the on-demand production of highly structured polyfunctional architectures.
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Affiliation(s)
- Yuan Zhang
- Aix Marseille Univ, CNRS, Centrale Marseille, iSm2 Marseille France
| | - Benjamin Ourri
- Univ Lyon, Univ Lyon 1, CNRS, INSA, CPE, ICBMS F-69622 Lyon France
| | | | - Emeric Jeamet
- Univ Lyon, Univ Lyon 1, CNRS, INSA, CPE, ICBMS F-69622 Lyon France
| | - Titouan Chetot
- Univ Lyon, Univ Lyon 1, CNRS, INSA, CPE, ICBMS F-69622 Lyon France
| | | | - Ana M Belenguer
- Yusuf Hamied Department of Chemistry, University of Cambridge Lensfield Road Cambridge CB2 1EW UK
| | | | - Olivier Cala
- Institut des Sciences Analytiques, UMR 5280 CNRS, Université Claude Bernard Lyon Lyon France
| | - Elise Dumont
- ENSL, CNRS, Laboratoire de Chimie UMR 5182 46 allée d'Italie 69364 Lyon France
- Université Côte d'Azur, CNRS, Institut de Chimie de Nice, UMR 7272 06108 Nice France
| | - Pradeep K Mandal
- Department of Pharmacy and Center for Integrated Protein Science, Ludwig-Maximilians-Universität Butenandtstr., 5-13 81377 München Germany
| | - Ivan Huc
- Department of Pharmacy and Center for Integrated Protein Science, Ludwig-Maximilians-Universität Butenandtstr., 5-13 81377 München Germany
| | - Florent Perret
- Univ Lyon, Univ Lyon 1, CNRS, INSA, CPE, ICBMS F-69622 Lyon France
| | - Laurent Vial
- Univ Lyon, Univ Lyon 1, CNRS, INSA, CPE, ICBMS F-69622 Lyon France
| | - Julien Leclaire
- Univ Lyon, Univ Lyon 1, CNRS, INSA, CPE, ICBMS F-69622 Lyon France
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3
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Stuardi FM, Tiozzo A, Rotundo L, Leclaire J, Gobetto R, Nervi C. Efficient Electrochemical Reduction of CO 2 to Formate in Methanol Solutions by Mn-Functionalized Electrodes in the Presence of Amines. Chemistry 2022; 28:e202104377. [PMID: 35471768 PMCID: PMC9325359 DOI: 10.1002/chem.202104377] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [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: 12/07/2021] [Indexed: 11/24/2022]
Abstract
Carbon cloth electrode modified by covalently attaching a manganese organometallic catalyst is used as cathode for the electrochemical reduction of CO2 in methanol solutions. Six different industrial amines are employed as co‐catalyst in millimolar concentrations to deliver a series of new reactive system. While such absorbents were so far believed to provide a CO2 reservoir and act as sacrificial proton source, we herein demonstrate that this role can be played by methanol, and that the adduct formed between CO2 and the amine can act as an effector or inhibitor toward the catalyst, thereby enhancing or reducing the production of formate. Pentamethyldiethylentriamine (PMDETA), identified as the best effector in our series, converts CO2 in wet methanolic solution into bisammonium bicarbonate. Computational studies revealed that this adduct is responsible for a barrierless transformation of CO2 to formate by the reduced form of the Mn catalyst covalently bonded to the electrode surface. As a consequence, selectivity can be switched on demand from CO to formate anion, and in the case of (PMDETA) an impressive TONHCOO− of 2.8×104 can be reached. This new valuable knowledge on an integrated capture and utilization system paves the way toward more efficient transformation of CO2 into liquid fuel.
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Affiliation(s)
| | - Arianna Tiozzo
- University of Turin, Department of Chemistry, Via P. Giuria 7, 10125, Turin, Italy.,CIRCC, via Celso Ulpiani 27, 70126, Bari, Italy
| | - Laura Rotundo
- University of Turin, Department of Chemistry, Via P. Giuria 7, 10125, Turin, Italy.,CIRCC, via Celso Ulpiani 27, 70126, Bari, Italy.,current address: Chemistry Division, Brookhaven National Laboratory, Upton, NY 11973-5000, USA
| | - Julien Leclaire
- University of Lyon, CNRS, CPE Lyon, INSA, ICBMS UMR 5246, 69611, Lyon, France
| | - Roberto Gobetto
- University of Turin, Department of Chemistry, Via P. Giuria 7, 10125, Turin, Italy.,CIRCC, via Celso Ulpiani 27, 70126, Bari, Italy
| | - Carlo Nervi
- University of Turin, Department of Chemistry, Via P. Giuria 7, 10125, Turin, Italy.,CIRCC, via Celso Ulpiani 27, 70126, Bari, Italy
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4
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Vial L, Perret F, Leclaire J. Dyn[
n
]arenes: Versatile Platforms To Study the Interplay between Covalent and Noncovalent Bonds. European J Org Chem 2022. [DOI: 10.1002/ejoc.202101274] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Laurent Vial
- Institut de Chimie et Biochimie Moléculaires et Supramoléculaires UMR 5246 CNRS Univ. Lyon Université Lyon 1 CPE INSA 43 Boulevard du 11 Novembre 1918 69622 Villeurbanne France
| | - Florent Perret
- Institut de Chimie et Biochimie Moléculaires et Supramoléculaires UMR 5246 CNRS Univ. Lyon Université Lyon 1 CPE INSA 43 Boulevard du 11 Novembre 1918 69622 Villeurbanne France
| | - Julien Leclaire
- Institut de Chimie et Biochimie Moléculaires et Supramoléculaires UMR 5246 CNRS Univ. Lyon Université Lyon 1 CPE INSA 43 Boulevard du 11 Novembre 1918 69622 Villeurbanne France
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5
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Vial L, Perret F, Leclaire J. Front Cover: Dyn[
n
]arenes: Versatile Platforms To Study the Interplay between Covalent and Noncovalent Bonds (Eur. J. Org. Chem. 2/2022). European J Org Chem 2022. [DOI: 10.1002/ejoc.202101552] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Laurent Vial
- Institut de Chimie et Biochimie Moléculaires et Supramoléculaires UMR 5246 CNRS Univ. Lyon Université Lyon 1 CPE INSA 43 Boulevard du 11 Novembre 1918 69622 Villeurbanne France
| | - Florent Perret
- Institut de Chimie et Biochimie Moléculaires et Supramoléculaires UMR 5246 CNRS Univ. Lyon Université Lyon 1 CPE INSA 43 Boulevard du 11 Novembre 1918 69622 Villeurbanne France
| | - Julien Leclaire
- Institut de Chimie et Biochimie Moléculaires et Supramoléculaires UMR 5246 CNRS Univ. Lyon Université Lyon 1 CPE INSA 43 Boulevard du 11 Novembre 1918 69622 Villeurbanne France
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6
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Dumartin M, Septavaux J, Donnier-Maréchal M, Jeamet E, Dumont E, Perret F, Vial L, Leclaire J. The dark side of disulfide-based dynamic combinatorial chemistry. Chem Sci 2020; 11:8151-8156. [PMID: 34094174 PMCID: PMC8163284 DOI: 10.1039/d0sc02399j] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
Abstract
During the last two decades, disulfide-based dynamic combinatorial chemistry has been extensively used in the field of molecular recognition to deliver artificial receptors for molecules of biological interest. Commonly, the nature of library members and their relative amounts are provided from HPLC-MS analysis of the libraries, allowing the identification of potential binders for a target (bio)molecule. By re-investigating dynamic combinatorial libraries generated from a simple 2,5-dicarboxy-1,4-dithiophenol building block in water, we herein demonstrated that multiple analytical tools were actually necessary in order to comprehensively describe the libraries in terms of size, stereochemistry, affinity, selectivity, and finally to get a true grasp on the different phenomena at work within dynamic combinatorial systems. We show that multiple analytical tools are necessary in order to describe the different phenomena within disulfide-based dynamic combinatorial libraries in terms of size, stereochemistry, affinity and selectivity.![]()
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Affiliation(s)
- Mélissa Dumartin
- Univ. Lyon, Univ. Lyon 1, CNRS, INSA, CPE, ICBMS F-69622 Lyon France
| | - Jean Septavaux
- Univ. Lyon, Univ. Lyon 1, CNRS, INSA, CPE, ICBMS F-69622 Lyon France .,Secoya Technologies, Louvain-La-Neuve 1348 Belgium
| | | | - Emeric Jeamet
- Univ. Lyon, Univ. Lyon 1, CNRS, INSA, CPE, ICBMS F-69622 Lyon France
| | - Elise Dumont
- ENS Lyon, Univ. Lyon 1, CNRS, Laboratoire de Chimie F-69364 France.,Institut Universitaire de France 5 rue Descartes 75005 Paris France
| | - Florent Perret
- Univ. Lyon, Univ. Lyon 1, CNRS, INSA, CPE, ICBMS F-69622 Lyon France
| | - Laurent Vial
- Univ. Lyon, Univ. Lyon 1, CNRS, INSA, CPE, ICBMS F-69622 Lyon France
| | - Julien Leclaire
- Univ. Lyon, Univ. Lyon 1, CNRS, INSA, CPE, ICBMS F-69622 Lyon France
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7
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Ourri B, Francoia JP, Monard G, Gris JC, Leclaire J, Vial L. Dendrigraft of Poly-l-lysine as a Promising Candidate To Reverse Heparin-based Anticoagulants in Clinical Settings. ACS Med Chem Lett 2019; 10:917-922. [PMID: 31223448 DOI: 10.1021/acsmedchemlett.9b00090] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2019] [Accepted: 05/08/2019] [Indexed: 12/14/2022] Open
Abstract
By using a combination of experimental and computational experiments, we demonstrated that a second-generation dendrigraft of poly-l-lysine neutralizes the anticoagulant activity of unfractionated heparin, low-molecular-weight heparin, and fondaparinux more efficiently than protamine does in human plasma, making this synthetic polymer a promising surrogate of this problematic protein in clinical settings.
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Affiliation(s)
- Benjamin Ourri
- Univ. Lyon, Univ. Claude Bernard Lyon 1, ICBMS UMR CNRS 5246, 43 Boulevard du 11 Novembre 1918, 69622 Villeurbanne Cedex, France
| | - Jean-Patrick Francoia
- Univ. Montpellier, IBMM UMR 5247 CNRS, Place Eugène Bataillon, 34296 Montpellier Cedex 5, France
| | - Gerald Monard
- Univ. Lorraine, LPCT UMR 7019 CNRS, Boulevard des Aiguillettes B.P. 70239, 54506 Vandoeuvre-les-Nancy, France
| | - Jean-Christophe Gris
- Department of Hematology, Nı̂mes University Hospital, University of Montpellier, 30029 Nîmes Cedex 9, France
- The First I.M. Sechenov Moscow State Medical University, Moscow 119146, Russian Federation
| | - Julien Leclaire
- Univ. Lyon, Univ. Claude Bernard Lyon 1, ICBMS UMR CNRS 5246, 43 Boulevard du 11 Novembre 1918, 69622 Villeurbanne Cedex, France
| | - Laurent Vial
- Univ. Lyon, Univ. Claude Bernard Lyon 1, ICBMS UMR CNRS 5246, 43 Boulevard du 11 Novembre 1918, 69622 Villeurbanne Cedex, France
- Univ. Montpellier, IBMM UMR 5247 CNRS, Place Eugène Bataillon, 34296 Montpellier Cedex 5, France
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8
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Jeamet E, Septavaux J, Héloin A, Donnier-Maréchal M, Dumartin M, Ourri B, Mandal P, Huc I, Bignon E, Dumont E, Morell C, Francoia JP, Perret F, Vial L, Leclaire J. Wetting the lock and key enthalpically favours polyelectrolyte binding. Chem Sci 2019; 10:277-283. [PMID: 30746081 PMCID: PMC6335637 DOI: 10.1039/c8sc02966k] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2018] [Accepted: 10/06/2018] [Indexed: 12/30/2022] Open
Abstract
By using a combination of readily accessible experimental and computational experiments in water, we explored the factors governing the association between polyanionic dyn[4]arene and a series of α,ω-alkyldiammonium ions of increasing chain length. We found that the lock-and-key concept based on the best match between the apolar and polar regions of the molecular partners failed to explain the observed selectivities. Instead, the dissection of the energetic and structural contributions demonstrated that the binding events were actually guided by two crucial solvent-related phenomena as the chain length of the guest increases: the expected decrease of the enthalpic cost of guest desolvation and the unexpected increase of the favourable enthalpy of complex solvation. By bringing to light the decisive enthalpic impact of complex solvation during the binding of polyelectrolytes by inclusion, this study may provide a missing piece to a puzzle that one day could display the global picture of molecular recognition in water.
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Affiliation(s)
- Emeric Jeamet
- Institut de Chimie et Biochimie Moléculaires et Supramoléculaires , UMR 5246 CNRS , Université Claude Bernard Lyon1 , CPE Lyon , 43 Boulevard du 11 Novembre 1918 , 69622 Villeurbanne Cedex , France . ;
| | - Jean Septavaux
- Institut de Chimie et Biochimie Moléculaires et Supramoléculaires , UMR 5246 CNRS , Université Claude Bernard Lyon1 , CPE Lyon , 43 Boulevard du 11 Novembre 1918 , 69622 Villeurbanne Cedex , France . ;
| | - Alexandre Héloin
- Institut de Chimie et Biochimie Moléculaires et Supramoléculaires , UMR 5246 CNRS , Université Claude Bernard Lyon1 , CPE Lyon , 43 Boulevard du 11 Novembre 1918 , 69622 Villeurbanne Cedex , France . ;
| | - Marion Donnier-Maréchal
- Institut de Chimie et Biochimie Moléculaires et Supramoléculaires , UMR 5246 CNRS , Université Claude Bernard Lyon1 , CPE Lyon , 43 Boulevard du 11 Novembre 1918 , 69622 Villeurbanne Cedex , France . ;
| | - Melissa Dumartin
- Institut de Chimie et Biochimie Moléculaires et Supramoléculaires , UMR 5246 CNRS , Université Claude Bernard Lyon1 , CPE Lyon , 43 Boulevard du 11 Novembre 1918 , 69622 Villeurbanne Cedex , France . ;
| | - Benjamin Ourri
- Institut de Chimie et Biochimie Moléculaires et Supramoléculaires , UMR 5246 CNRS , Université Claude Bernard Lyon1 , CPE Lyon , 43 Boulevard du 11 Novembre 1918 , 69622 Villeurbanne Cedex , France . ;
| | - Pradeep Mandal
- Institut de Chimie et Biologie des Membranes et des Nano-objets , UMR 5248 CNRS , Université de Bordeaux , IPB , 2 rue Escarpit , 33600 Pessac , France
| | - Ivan Huc
- Institut de Chimie et Biologie des Membranes et des Nano-objets , UMR 5248 CNRS , Université de Bordeaux , IPB , 2 rue Escarpit , 33600 Pessac , France
| | - Emmanuelle Bignon
- Laboratoire de Chimie , UMR 5182 CNRS , Ecole Normale Supérieure de Lyon , Université Claude Bernard Lyon 1 , 46 Allée d'Italie , 69364 Lyon Cedex 07 , France .
- Institut des Sciences Analytiques , UMR 5280 CNRS , Université Claude Bernard Lyon 1 , Ecole Nationale Supérieure de Lyon , 5, rue de la Doua , 69100 Villeurbanne , France
| | - Elise Dumont
- Laboratoire de Chimie , UMR 5182 CNRS , Ecole Normale Supérieure de Lyon , Université Claude Bernard Lyon 1 , 46 Allée d'Italie , 69364 Lyon Cedex 07 , France .
| | - Christophe Morell
- Institut des Sciences Analytiques , UMR 5280 CNRS , Université Claude Bernard Lyon 1 , Ecole Nationale Supérieure de Lyon , 5, rue de la Doua , 69100 Villeurbanne , France
| | - Jean-Patrick Francoia
- Institut des Biomolécules Max Mousseron , UMR 5247 CNRS , Université de Montpellier , ENSCM , Place Eugène Bataillon , 34296 Montpellier Cedex 5 , France
| | - Florent Perret
- Institut de Chimie et Biochimie Moléculaires et Supramoléculaires , UMR 5246 CNRS , Université Claude Bernard Lyon1 , CPE Lyon , 43 Boulevard du 11 Novembre 1918 , 69622 Villeurbanne Cedex , France . ;
| | - Laurent Vial
- Institut de Chimie et Biochimie Moléculaires et Supramoléculaires , UMR 5246 CNRS , Université Claude Bernard Lyon1 , CPE Lyon , 43 Boulevard du 11 Novembre 1918 , 69622 Villeurbanne Cedex , France . ;
| | - Julien Leclaire
- Institut de Chimie et Biochimie Moléculaires et Supramoléculaires , UMR 5246 CNRS , Université Claude Bernard Lyon1 , CPE Lyon , 43 Boulevard du 11 Novembre 1918 , 69622 Villeurbanne Cedex , France . ;
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9
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Donnier-Maréchal M, Septavaux J, Jeamet E, Héloin A, Perret F, Dumont E, Rossi JC, Ziarelli F, Leclaire J, Vial L. Diastereoselective Synthesis of a Dyn[3]arene with Distinct Binding Behaviors toward Linear Biogenic Polyamines. Org Lett 2018; 20:2420-2423. [PMID: 29624063 DOI: 10.1021/acs.orglett.8b00766] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
The extension of the family of dyn[ n]arenes toward a three-membered macrocycle is reported. Through a templated approach, a single diastereoisomer of a dyn[3]arene that bears six carboxyl groups could be isolated by precipitation in 59-63% yield and excellent purity (≥95%). A combination of experimental and computational experiments in water at physiological pH revealed that the macrocycle could bind parent biogenic polyamines with a unique diversity of surface-binding modes. Whereas no binding event could be accurately measured with 1,3-diaminopropane, spermidine formed a classical stoichiometric complex with the dyn[3]arene in the millimolar concentration range. On the other hand, the data obtained for spermine could only be attributed to a more complex binding event with the formation of a 2:1 complex at high [host]/[guest] ratios and redistribution toward a 1:1 complex upon further addition of guest.
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Affiliation(s)
- Marion Donnier-Maréchal
- Institut de Chimie et Biochimie Moléculaires et Supramoléculaires, UMR 5246 CNRS - Université Claude Bernard Lyon1 - CPE Lyon , 43 Boulevard du 11 Novembre 1918 , Villeurbanne Cedex 69622 , France
| | - Jean Septavaux
- Institut de Chimie et Biochimie Moléculaires et Supramoléculaires, UMR 5246 CNRS - Université Claude Bernard Lyon1 - CPE Lyon , 43 Boulevard du 11 Novembre 1918 , Villeurbanne Cedex 69622 , France
| | - Emeric Jeamet
- Institut de Chimie et Biochimie Moléculaires et Supramoléculaires, UMR 5246 CNRS - Université Claude Bernard Lyon1 - CPE Lyon , 43 Boulevard du 11 Novembre 1918 , Villeurbanne Cedex 69622 , France
| | - Alexandre Héloin
- Institut de Chimie et Biochimie Moléculaires et Supramoléculaires, UMR 5246 CNRS - Université Claude Bernard Lyon1 - CPE Lyon , 43 Boulevard du 11 Novembre 1918 , Villeurbanne Cedex 69622 , France
| | - Florent Perret
- Institut de Chimie et Biochimie Moléculaires et Supramoléculaires, UMR 5246 CNRS - Université Claude Bernard Lyon1 - CPE Lyon , 43 Boulevard du 11 Novembre 1918 , Villeurbanne Cedex 69622 , France
| | - Elise Dumont
- Laboratoire de Chimie, UMR 5182 CNRS - Ecole Nationale Supérieure de Lyon , Université Claude Bernard Lyon 1 - CEA , 46 Allée d'Italie , Lyon Cedex 07 69364 , France
| | - Jean-Christophe Rossi
- Institut des Biomolécules Max Mousseron, UMR 5247 CNRS , Université de Montpellier - ENSCM , Place Eugène Bataillon , Montpellier Cedex 5 34296 , France
| | - Fabio Ziarelli
- Spectropole d'Aix-Marseille Université - Centrale Marseille - CNRS , Fédération des Sciences Chimiques FR1739, Campus Scientifique de Saint Jérôme , Marseille Cedex 20 13397 , France
| | - Julien Leclaire
- Institut de Chimie et Biochimie Moléculaires et Supramoléculaires, UMR 5246 CNRS - Université Claude Bernard Lyon1 - CPE Lyon , 43 Boulevard du 11 Novembre 1918 , Villeurbanne Cedex 69622 , France
| | - Laurent Vial
- Institut de Chimie et Biochimie Moléculaires et Supramoléculaires, UMR 5246 CNRS - Université Claude Bernard Lyon1 - CPE Lyon , 43 Boulevard du 11 Novembre 1918 , Villeurbanne Cedex 69622 , France
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10
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Vial L, Dumartin M, Donnier-Maréchal M, Perret F, Francoia JP, Leclaire J. Chirality sensing and discrimination of lysine derivatives in water with a dyn[4]arene. Chem Commun (Camb) 2018; 52:14219-14221. [PMID: 27872912 DOI: 10.1039/c6cc07713g] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [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
The asymmetric deformation of a dyn[4]arene upon the binding of various lysine derivatives leads to distinct induced circular dichroism outputs in buffered water, which can be exploited not only for the determination of their enantiomeric excesses, but also for their classification by linear discriminant analysis.
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Affiliation(s)
- Laurent Vial
- Institut des Biomolécules Max Mousseron, UMR 5247 CNRS - Université de Montpellier - ENSCM, Place Eugène Bataillon, 34296 Montpellier cedex 5, France.
| | - Melissa Dumartin
- Institut de Chimie et Biochimie Moléculaires et Supramoléculaires, UMR 5246 CNRS - Université Claude Bernard Lyon 1 - CPE Lyon - INSA, 43 Boulevard du 11 Novembre 1918, 69622 Villeurbanne cedex, France.
| | - Marion Donnier-Maréchal
- Institut de Chimie et Biochimie Moléculaires et Supramoléculaires, UMR 5246 CNRS - Université Claude Bernard Lyon 1 - CPE Lyon - INSA, 43 Boulevard du 11 Novembre 1918, 69622 Villeurbanne cedex, France.
| | - Florent Perret
- Institut de Chimie et Biochimie Moléculaires et Supramoléculaires, UMR 5246 CNRS - Université Claude Bernard Lyon 1 - CPE Lyon - INSA, 43 Boulevard du 11 Novembre 1918, 69622 Villeurbanne cedex, France.
| | - Jean-Patrick Francoia
- Institut des Biomolécules Max Mousseron, UMR 5247 CNRS - Université de Montpellier - ENSCM, Place Eugène Bataillon, 34296 Montpellier cedex 5, France.
| | - Julien Leclaire
- Institut de Chimie et Biochimie Moléculaires et Supramoléculaires, UMR 5246 CNRS - Université Claude Bernard Lyon 1 - CPE Lyon - INSA, 43 Boulevard du 11 Novembre 1918, 69622 Villeurbanne cedex, France.
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Abstract
Extraction and purification of basic chemicals from complex mixtures has been a persistent issue throughout the development of the chemical sciences. The chemical industry and academic research have grown over the centuries by following a deconstruction-reconstruction approach, reminiscent of the metabolism process. Chemists have designed and optimized extraction, purification, and transformation processes of molecules from natural deposits (fossil fuels, biomass, ores), in order to reassemble them into complex adducts. These highly selective and cost-effective techniques arose from developments in physical chemistry but also in supramolecular chemistry, long before the term was even coined. Thanks to the extremely diverse toolbox currently available to the scientific community, artificial molecular systems of increasing complexity can be built and integrated into high-technology products. If humanity has proven through the ages how gifted it can be at this deconstruction-reconstruction game, which has transformed the natural world to a human-shaped one, it has been confronted for more than a century by a new challenge: the deconstruction and reconstruction from a new type of deposit, the waste resulting from the mass production of disposable manufactured goods. In this Account, we will explore the potential contribution of controlled molecular and supramolecular self-assembly phenomena to the challenge of selective and efficient capture of valuable target molecules from mixtures found in postconsumer waste. While it may appear paradoxical to add more molecular ingredients to an already compositionally complex system in order to address a purification issue, we will compare the selectivity, yield, and cost of such an atypical procedure with traditional physical techniques. In the context of carbon dioxide capture or release, we will specifically focus on the coupling between this reversible covalent fixation of the gas by amines and an additional chemical equilibrium. This equilibrium may involve covalent or noncovalent bond formation between a supplementary species and either the unloaded reactant or the CO2-loaded product. Thereby, this new reactive species may act as a CO2 capture agonist or antagonist by either thermodynamically favoring the carbamation or decarbamation direction. Indeed, superagonism, the increase of CO2 loading per amine site upon carbamation beyond the theoretical limit of 0.5, can be achieved using tightly bound cationic metal counterions. In all cases, upon binding and adduct formation, a mutual selection process occurs between one member of the CO2-based dynamic combinatorial library and one agonist or antagonist, which can itself be contained in a complex mixture of analogues. If this adduct is the only species that, upon formation, can self-aggregate into a separate solid phase, selection and binding are accompanied by translocation, rendering the purification procedure operationally straightforward. This general strategy, based on a simple design of coupled molecular systems, may easily be implemented within new, disruptive technologies for selective extraction of target molecules, thereby providing a substantial environmental and economic benefit.
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Affiliation(s)
| | | | - Julien Leclaire
- Univ Lyon, Université Claude Bernard Lyon 1, CNRS, CPE Lyon, ICBMS UMR 5246, 43 Boulevard du 11 Novembre 1918, F-69622 Lyon, France
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Point V, Bénarouche A, Zarrillo J, Guy A, Magnez R, Fonseca L, Raux B, Leclaire J, Buono G, Fotiadu F, Durand T, Carrière F, Vaysse C, Couëdelo L, Cavalier JF. Slowing down fat digestion and absorption by an oxadiazolone inhibitor targeting selectively gastric lipolysis. Eur J Med Chem 2016; 123:834-848. [DOI: 10.1016/j.ejmech.2016.08.009] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2016] [Revised: 08/05/2016] [Accepted: 08/06/2016] [Indexed: 01/13/2023]
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13
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Leclaire J, Poisson G, Ziarelli F, Pepe G, Fotiadu F, Paruzzo FM, Rossini AJ, Dumez JN, Elena-Herrmann B, Emsley L. Structure elucidation of a complex CO 2-based organic framework material by NMR crystallography. Chem Sci 2016; 7:4379-4390. [PMID: 30155085 PMCID: PMC6014084 DOI: 10.1039/c5sc03810c] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2015] [Accepted: 03/22/2016] [Indexed: 12/23/2022] Open
Abstract
A three-dimensional structural model of a complex CO2-based organic framework made from high molecular weight, self-assembled, flexible and multi-functional oligomeric constituents has been determined de novo by solid-state NMR including DNP-enhanced experiments. The complete assignment of the 15N, 13C and 1H resonances was obtained from a series of two-dimensional through space and through bond correlation experiments. MM-QM calculations were used to generate different model structures for the material which were then evaluated by comparing multiple experimental and calculated NMR parameters. Both NMR and powder X-ray diffraction were evaluated as tools to determine the packing by crystal modelling, and at the level of structural modelling used here PXRD was found not to be a useful complement. The structure determined reveals a highly optimised H-bonding network that explains the unusual selectivity of the self-assembly process which generates the material. The NMR crystallography approach used here should be applicable for the structure determination of other complex solid materials.
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Affiliation(s)
- Julien Leclaire
- Univ Lyon , Université Claude Bernard , CNRS, INSA, CPE , ICBMS UMR 5246 , 69622 Villeurbanne , France .
- Aix Marseille Université , Centrale Marseille , CNRS , iSm2 UMR 7313 , 13397 Marseille , France
| | - Guillaume Poisson
- Univ Lyon , Université Claude Bernard , CNRS, INSA, CPE , ICBMS UMR 5246 , 69622 Villeurbanne , France .
- Aix Marseille Université , Centrale Marseille , CNRS , iSm2 UMR 7313 , 13397 Marseille , France
| | - Fabio Ziarelli
- Aix-Marseille Université , Fédération des Sciences Chimiques , Spectropôle , 13397 Marseille , France
| | - Gerard Pepe
- Aix-Marseille Université , CNRS , UMR 7325 CINaM , 13288 Marseille , France
| | - Frédéric Fotiadu
- Aix Marseille Université , Centrale Marseille , CNRS , iSm2 UMR 7313 , 13397 Marseille , France
| | - Federico M Paruzzo
- Institut des Sciences et Ingénierie Chimiques , Ecole Polytechnique Fédérale de Lausanne (EPFL) , 1015 Lausanne , Switzerland
| | - Aaron J Rossini
- Université de Lyon , Institut des Sciences Analytiques , Centre de RMN à très hauts champs , CNRS/ENS Lyon/UCBL , 69100 Villeurbanne , France .
- Institut des Sciences et Ingénierie Chimiques , Ecole Polytechnique Fédérale de Lausanne (EPFL) , 1015 Lausanne , Switzerland
| | - Jean-Nicolas Dumez
- Université de Lyon , Institut des Sciences Analytiques , Centre de RMN à très hauts champs , CNRS/ENS Lyon/UCBL , 69100 Villeurbanne , France .
| | - Bénédicte Elena-Herrmann
- Université de Lyon , Institut des Sciences Analytiques , Centre de RMN à très hauts champs , CNRS/ENS Lyon/UCBL , 69100 Villeurbanne , France .
| | - Lyndon Emsley
- Institut des Sciences et Ingénierie Chimiques , Ecole Polytechnique Fédérale de Lausanne (EPFL) , 1015 Lausanne , Switzerland
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Skowron PT, Dumartin M, Jeamet E, Perret F, Gourlaouen C, Baudouin A, Fenet B, Naubron JV, Fotiadu F, Vial L, Leclaire J. On-Demand Cyclophanes: Substituent-Directed Self-Assembling, Folding, and Binding. J Org Chem 2016; 81:654-61. [PMID: 26691558 DOI: 10.1021/acs.joc.5b02605] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
A family of p-cyclophanes based on bis- or tetrafunctionalized 1,4-bisthiophenol units linked by disulfide bridges was obtained by self-assembly on a gram scale and without any chromatographic purification. The nature of the functionalities borne by these so-called dyn[4]arenes plays a crucial role on their structural features as well as their molecular recognition abilities. Tuning these functions on demand yields tailored receptors for cations, anions, or zwitterions in organic or aqueous media.
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Affiliation(s)
- Pierre-Thomas Skowron
- Institut des Sciences Moléculaires de Marseille, UMR 7313 CNRS - Université d'Aix-Marseille - École Centrale Marseille, Avenue Escadrille Normandie-Niemen, 13397 Marseille Cedex 20, France
| | - Melissa Dumartin
- Institut de Chimie et Biochimie Moléculaires et Supramoléculaires, UMR 5246 CNRS - Université Claude Bernard Lyon 1 - CPE Lyon, 43 Boulevard du 11 Novembre 1918, 69622 Villeurbanne Cedex, France
| | - Emeric Jeamet
- Institut de Chimie et Biochimie Moléculaires et Supramoléculaires, UMR 5246 CNRS - Université Claude Bernard Lyon 1 - CPE Lyon, 43 Boulevard du 11 Novembre 1918, 69622 Villeurbanne Cedex, France
| | - Florent Perret
- Institut de Chimie et Biochimie Moléculaires et Supramoléculaires, UMR 5246 CNRS - Université Claude Bernard Lyon 1 - CPE Lyon, 43 Boulevard du 11 Novembre 1918, 69622 Villeurbanne Cedex, France
| | - Christophe Gourlaouen
- Institut de Chimie de Strasbourg, UMR 7177 CNRS - Université de Strasbourg, 1 rue Blaise Pascal, 67008 Strasbourg Cedex, France
| | - Anne Baudouin
- Institut de Chimie et Biochimie Moléculaires et Supramoléculaires, UMR 5246 CNRS - Université Claude Bernard Lyon 1 - CPE Lyon, 43 Boulevard du 11 Novembre 1918, 69622 Villeurbanne Cedex, France
| | - Bernard Fenet
- Institut de Chimie et Biochimie Moléculaires et Supramoléculaires, UMR 5246 CNRS - Université Claude Bernard Lyon 1 - CPE Lyon, 43 Boulevard du 11 Novembre 1918, 69622 Villeurbanne Cedex, France
| | - Jean-Valère Naubron
- Institut des Sciences Moléculaires de Marseille, UMR 7313 CNRS - Université d'Aix-Marseille - École Centrale Marseille, Avenue Escadrille Normandie-Niemen, 13397 Marseille Cedex 20, France
| | - Frédéric Fotiadu
- Institut des Sciences Moléculaires de Marseille, UMR 7313 CNRS - Université d'Aix-Marseille - École Centrale Marseille, Avenue Escadrille Normandie-Niemen, 13397 Marseille Cedex 20, France
| | - Laurent Vial
- Institut des Biomolécules Max Mousseron, UMR 5247 CNRS - Université de Montpellier, Place Eugène Bataillon, 34296 Montpellier Cedex 5, France
| | - Julien Leclaire
- Institut de Chimie et Biochimie Moléculaires et Supramoléculaires, UMR 5246 CNRS - Université Claude Bernard Lyon 1 - CPE Lyon, 43 Boulevard du 11 Novembre 1918, 69622 Villeurbanne Cedex, France
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Gatineau D, Nguyen DH, Hérault D, Vanthuyne N, Leclaire J, Giordano L, Buono G. H-Adamantylphosphinates as Universal Precursors of P-Stereogenic Compounds. J Org Chem 2015; 80:4132-41. [DOI: 10.1021/acs.joc.5b00548] [Citation(s) in RCA: 36] [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: 10/23/2022]
Affiliation(s)
- David Gatineau
- Aix Marseille Université, Centrale Marseille, CNRS,
iSm2 UMR 7313, 13397 Marseille, France
| | - Duc Hanh Nguyen
- Aix Marseille Université, Centrale Marseille, CNRS,
iSm2 UMR 7313, 13397 Marseille, France
| | - Damien Hérault
- Aix Marseille Université, Centrale Marseille, CNRS,
iSm2 UMR 7313, 13397 Marseille, France
| | - Nicolas Vanthuyne
- Aix Marseille Université, Centrale Marseille, CNRS,
iSm2 UMR 7313, 13397 Marseille, France
| | - Julien Leclaire
- Aix Marseille Université, Centrale Marseille, CNRS,
iSm2 UMR 7313, 13397 Marseille, France
| | - Laurent Giordano
- Aix Marseille Université, Centrale Marseille, CNRS,
iSm2 UMR 7313, 13397 Marseille, France
| | - Gérard Buono
- Aix Marseille Université, Centrale Marseille, CNRS,
iSm2 UMR 7313, 13397 Marseille, France
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16
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Delorme V, Raux B, Puppo R, Leclaire J, Cavalier JF, Marc S, Kamarajugadda PK, Buono G, Fotiadu F, Canaan S, Carrière F. Supported inhibitor for fishing lipases in complex biological media and mass spectrometry identification. Biochimie 2014; 107 Pt A:124-34. [DOI: 10.1016/j.biochi.2014.07.015] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2014] [Accepted: 07/16/2014] [Indexed: 12/24/2022]
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Leclaire J, Mazari M, Zhang Y, Bonduelle C, Thillaye du Boullay O, Martin-Vaca B, Bourissou D, De Riggi I, Fortrie R, Fotiadu F, Buono G, Plamont R, Kikkawa Y, Takahashi M, Kanesato M, Giorgi M, Chan Kam Shun A, Roussel C, Balaban TS. Cover Picture: Bare Histidine-Serine Models: Implication and Impact of Hydrogen Bonding on Nucleophilicity / Nanoscopic Imaging of meso-Tetraalkylporphyrins Prepared in High Yields Enabled by Montmorrilonite K10 and 3 Å Molecular Sieves (Chem. Eur. J. 34/. Chemistry 2013. [DOI: 10.1002/chem.201390125] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Leclaire J, Mazari M, Zhang Y, Bonduelle C, Thillaye du Boullay O, Martin-Vaca B, Bourissou D, De Riggi I, Fortrie R, Fotiadu F, Buono G. Bare Histidine-Serine Models: Implication and Impact of Hydrogen Bonding on Nucleophilicity. Chemistry 2013; 19:11301-9. [DOI: 10.1002/chem.201301275] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2013] [Indexed: 11/11/2022]
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19
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Point V, Pavan Kumar KVP, Marc S, Delorme V, Parsiegla G, Amara S, Carrière F, Buono G, Fotiadu F, Canaan S, Leclaire J, Cavalier JF. Analysis of the discriminative inhibition of mammalian digestive lipases by 3-phenyl substituted 1,3,4-oxadiazol-2(3H)-ones. Eur J Med Chem 2012; 58:452-63. [PMID: 23153815 DOI: 10.1016/j.ejmech.2012.10.040] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2012] [Revised: 09/05/2012] [Accepted: 10/21/2012] [Indexed: 01/13/2023]
Abstract
We report here the reactivity and selectivity of three 5-Methoxy-N-3-Phenyl substituted-1,3,4-Oxadiazol-2(3H)-ones (MPOX, as well as meta and para-PhenoxyPhenyl derivatives, i.e.MmPPOX and MpPPOX) with respect to the inhibition of mammalian digestive lipases: dog gastric lipase (DGL), human (HPL) and porcine (PPL) pancreatic lipases, human (HPLRP2) and guinea pig (GPLRP2) pancreatic lipase-related proteins 2, human pancreatic carboxyl ester hydrolase (hCEH), and porcine pancreatic extracts (PPE). All three oxadiazolones displayed similar inhibitory activities on DGL, PLRP2s and hCEH than the FDA-approved anti-obesity drug Orlistat towards the same enzymes. These compounds appeared however to be discriminative of HPL (poorly inhibited) and PPL (fully inhibited). The inhibitory activities obtained experimentally in vitro were further rationalized using in silico molecular docking. In the case of DGL, we demonstrated that the phenoxy group plays a key role in specific molecular interactions within the lipase's active site. The absence of this group in the case of MPOX, as well as its connectivity to the neighbouring aromatic ring in the case of MmPPOX and MpPPOX, strongly impacts the inhibitory efficiency of these oxadiazolones and leads to a significant gain in selectivity towards the lipases tested. The powerful inhibition of PPL, DGL, PLRP2s, hCEH and to a lesser extend HPL, suggests that oxadiazolone derivatives could also provide useful leads for the development of novel and more discriminative inhibitors of digestive lipases. These inhibitors could be used for a better understanding of individual lipase function as well as for drug development aiming at the regulation of the whole gastrointestinal lipolysis process.
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Affiliation(s)
- Vanessa Point
- CNRS - Aix-Marseille Université - Enzymologie Interfaciale et Physiologie de Lipolyse - UMR 7282, 31 chemin Joseph Aiguier, 13402 Marseille Cedex 20, France
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20
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Mendoza LD, Rodriguez JA, Leclaire J, Buono G, Fotiadu F, Carrière F, Abousalham A. An ultraviolet spectrophotometric assay for the screening of sn-2-specific lipases using 1,3-O-dioleoyl-2-O-α-eleostearoyl-sn-glycerol as substrate. J Lipid Res 2012; 53:185-94. [PMID: 22114038 PMCID: PMC3243475 DOI: 10.1194/jlr.d019489] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [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: 08/07/2011] [Revised: 10/14/2011] [Indexed: 11/20/2022] Open
Abstract
In the present study, we propose a continuous assay for the screening of sn-2 lipases by using triacylglycerols (TAGs) from Aleurites fordii seed (tung oil) and a synthetic TAG containing the α-eleostearic acid at the sn-2 position and the oleic acid (OA) at the sn-1 and sn-3 positions [1,3-O-dioleoyl-2-O-α-eleostearoyl-sn-glycerol (sn-OEO)]. Each TAG was coated into a microplate well, and the lipase activity was measured by optical density increase at 272 nm due to transition of α-eleostearic acid from the adsorbed to the soluble state. The sn-1,3-regioselective lipases human pancreatic lipase (HPL), LIP2 lipase from Yarrowia lipolytica (YLLIP2), and a known sn-2 lipase, Candida antarctica lipase A (CALA) were used to validate this method. TLC analysis of lipolysis products showed that the lipases tested were able to hydrolyze the sn-OEO and the tung oil TAGs, but only CALA hydrolyzed the sn-2 position. The ratio of initial velocities on sn-OEO and tung oil TAGs was used to estimate the sn-2 preference of lipases. CALA was the enzyme with the highest ratio (0.22 ± 0.015), whereas HPL and YLLIP2 showed much lower ratios (0.072 ± 0.026 and 0.038 ± 0.016, respectively). This continuous sn-2 lipase assay is compatible with a high sample throughput and thus can be applied to the screening of sn-2 lipases.
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Affiliation(s)
- Lilia D. Mendoza
- Laboratoire Chirosciences, UMR 6263 CNRS, Institut des Sciences Moléculaires de Marseille (ISM2), Ecole Centrale Marseille, Université Aix-Marseille, Avenue Escadrille Normandie-Niemen, 13397 Marseille Cedex 20, France
| | - Jorge A. Rodriguez
- CNRS, Université d'Aix-Marseille, Enzymologie Interfaciale et Physiologie de la Lipolyse, UPR 9025, 31, Chemin Joseph Aiguier, 13402 Marseille Cedex 20, France; and
| | - Julien Leclaire
- Laboratoire Chirosciences, UMR 6263 CNRS, Institut des Sciences Moléculaires de Marseille (ISM2), Ecole Centrale Marseille, Université Aix-Marseille, Avenue Escadrille Normandie-Niemen, 13397 Marseille Cedex 20, France
| | - Gerard Buono
- Laboratoire Chirosciences, UMR 6263 CNRS, Institut des Sciences Moléculaires de Marseille (ISM2), Ecole Centrale Marseille, Université Aix-Marseille, Avenue Escadrille Normandie-Niemen, 13397 Marseille Cedex 20, France
| | - Frédéric Fotiadu
- Laboratoire Chirosciences, UMR 6263 CNRS, Institut des Sciences Moléculaires de Marseille (ISM2), Ecole Centrale Marseille, Université Aix-Marseille, Avenue Escadrille Normandie-Niemen, 13397 Marseille Cedex 20, France
| | - Frédéric Carrière
- CNRS, Université d'Aix-Marseille, Enzymologie Interfaciale et Physiologie de la Lipolyse, UPR 9025, 31, Chemin Joseph Aiguier, 13402 Marseille Cedex 20, France; and
| | - Abdelkarim Abousalham
- Organization and Dynamics of Biological Membranes, UMR 5246 ICBMS, CNRS-Université Claude Bernard Lyon 1, Bâtiment Raulin, 43, boulevard du 11 novembre 1918, 69622 Villeurbanne, Cedex, France
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El-Alfy M, Deloche C, Azzi L, Bernard BA, Bernerd F, Coutet J, Chaussade V, Martel C, Leclaire J, Labrie F. Skin responses to topical dehydroepiandrosterone: implications in antiageing treatment? Br J Dermatol 2011; 163:968-76. [PMID: 20698844 DOI: 10.1111/j.1365-2133.2010.09972.x] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [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
BACKGROUND Although low dehydroepiandrosterone (DHEA) is suspected to have a role in skin ageing, little information is available on the mechanisms potentially involved. OBJECTIVES To obtain information on androgen receptor (AR) and procollagen expression in ageing skin during DHEA treatment. METHODS A placebo-controlled, randomized, prospective study was performed with 75 postmenopausal women aged 60-65 years. The women were treated twice daily for 13 weeks with 3·0 mL of placebo or 0·1%, 0·3%, 1% or 2% DHEA cream applied on the face, arms, back of hands, upper chest and right thigh where 2-mm biopsies were collected before and after treatment. RESULTS Although the overall structure of the epidermis was not significantly affected at the light microscopy level, AR expression examined by immunocytochemistry was markedly increased by DHEA treatment. In the dermis, the expression levels of procollagen 1 and 3 mRNA estimated by in situ hybridization were increased by DHEA treatment. In addition, the expression of heat shock protein (HSP) 47, a molecule believed to have chaperone-like functions potentially affecting procollagen biosynthesis, was also found by immunocytochemistry evaluation to be increased, especially at the two highest DHEA doses. CONCLUSION These data suggest the possibility that topical DHEA could be used as an efficient and physiological antiageing skin agent.
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Affiliation(s)
- M El-Alfy
- Molecular Endocrinology, Oncology and Human Genomics Research Center, Laval University Hospital Research Center (CRCHUL) and Laval University, 2705 Laurier Boulevard, Quebec City, G1V 4G2 QC, Canada
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22
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Leclaire J, Husson G, Devaux N, Delorme V, Charles L, Ziarelli F, Desbois P, Chaumonnot A, Jacquin M, Fotiadu F, Buono G. CO2 Binding by Dynamic Combinatorial Chemistry: An Environmental Selection. J Am Chem Soc 2010; 132:3582-93. [DOI: 10.1021/ja909975q] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Julien Leclaire
- Laboratoire Chirosciences, UMR 6263 CNRS: Institut des Sciences Moléculaires de Marseille ISM2, École Centrale Marseille, Université Paul Cézanne, case A62, Avenue Escadrille Normandie-Niemen, 13397 Marseille Cedex 20, France, Universités Aix-Marseille I, II, and III - CNRS, UMR 6264: Laboratoire Chimie, Provence, Spectrométries Appliquées à la Chimie Structurale, F-13397 Marseille, France, Aix-Marseille Université, Fédération des Sciences Chimiques, Spectropôle, case 511, avenue Escadrille Normandie
| | - Guillaume Husson
- Laboratoire Chirosciences, UMR 6263 CNRS: Institut des Sciences Moléculaires de Marseille ISM2, École Centrale Marseille, Université Paul Cézanne, case A62, Avenue Escadrille Normandie-Niemen, 13397 Marseille Cedex 20, France, Universités Aix-Marseille I, II, and III - CNRS, UMR 6264: Laboratoire Chimie, Provence, Spectrométries Appliquées à la Chimie Structurale, F-13397 Marseille, France, Aix-Marseille Université, Fédération des Sciences Chimiques, Spectropôle, case 511, avenue Escadrille Normandie
| | - Nathalie Devaux
- Laboratoire Chirosciences, UMR 6263 CNRS: Institut des Sciences Moléculaires de Marseille ISM2, École Centrale Marseille, Université Paul Cézanne, case A62, Avenue Escadrille Normandie-Niemen, 13397 Marseille Cedex 20, France, Universités Aix-Marseille I, II, and III - CNRS, UMR 6264: Laboratoire Chimie, Provence, Spectrométries Appliquées à la Chimie Structurale, F-13397 Marseille, France, Aix-Marseille Université, Fédération des Sciences Chimiques, Spectropôle, case 511, avenue Escadrille Normandie
| | - Vincent Delorme
- Laboratoire Chirosciences, UMR 6263 CNRS: Institut des Sciences Moléculaires de Marseille ISM2, École Centrale Marseille, Université Paul Cézanne, case A62, Avenue Escadrille Normandie-Niemen, 13397 Marseille Cedex 20, France, Universités Aix-Marseille I, II, and III - CNRS, UMR 6264: Laboratoire Chimie, Provence, Spectrométries Appliquées à la Chimie Structurale, F-13397 Marseille, France, Aix-Marseille Université, Fédération des Sciences Chimiques, Spectropôle, case 511, avenue Escadrille Normandie
| | - Laurence Charles
- Laboratoire Chirosciences, UMR 6263 CNRS: Institut des Sciences Moléculaires de Marseille ISM2, École Centrale Marseille, Université Paul Cézanne, case A62, Avenue Escadrille Normandie-Niemen, 13397 Marseille Cedex 20, France, Universités Aix-Marseille I, II, and III - CNRS, UMR 6264: Laboratoire Chimie, Provence, Spectrométries Appliquées à la Chimie Structurale, F-13397 Marseille, France, Aix-Marseille Université, Fédération des Sciences Chimiques, Spectropôle, case 511, avenue Escadrille Normandie
| | - Fabio Ziarelli
- Laboratoire Chirosciences, UMR 6263 CNRS: Institut des Sciences Moléculaires de Marseille ISM2, École Centrale Marseille, Université Paul Cézanne, case A62, Avenue Escadrille Normandie-Niemen, 13397 Marseille Cedex 20, France, Universités Aix-Marseille I, II, and III - CNRS, UMR 6264: Laboratoire Chimie, Provence, Spectrométries Appliquées à la Chimie Structurale, F-13397 Marseille, France, Aix-Marseille Université, Fédération des Sciences Chimiques, Spectropôle, case 511, avenue Escadrille Normandie
| | - Perrine Desbois
- Laboratoire Chirosciences, UMR 6263 CNRS: Institut des Sciences Moléculaires de Marseille ISM2, École Centrale Marseille, Université Paul Cézanne, case A62, Avenue Escadrille Normandie-Niemen, 13397 Marseille Cedex 20, France, Universités Aix-Marseille I, II, and III - CNRS, UMR 6264: Laboratoire Chimie, Provence, Spectrométries Appliquées à la Chimie Structurale, F-13397 Marseille, France, Aix-Marseille Université, Fédération des Sciences Chimiques, Spectropôle, case 511, avenue Escadrille Normandie
| | - Alexandra Chaumonnot
- Laboratoire Chirosciences, UMR 6263 CNRS: Institut des Sciences Moléculaires de Marseille ISM2, École Centrale Marseille, Université Paul Cézanne, case A62, Avenue Escadrille Normandie-Niemen, 13397 Marseille Cedex 20, France, Universités Aix-Marseille I, II, and III - CNRS, UMR 6264: Laboratoire Chimie, Provence, Spectrométries Appliquées à la Chimie Structurale, F-13397 Marseille, France, Aix-Marseille Université, Fédération des Sciences Chimiques, Spectropôle, case 511, avenue Escadrille Normandie
| | - Marc Jacquin
- Laboratoire Chirosciences, UMR 6263 CNRS: Institut des Sciences Moléculaires de Marseille ISM2, École Centrale Marseille, Université Paul Cézanne, case A62, Avenue Escadrille Normandie-Niemen, 13397 Marseille Cedex 20, France, Universités Aix-Marseille I, II, and III - CNRS, UMR 6264: Laboratoire Chimie, Provence, Spectrométries Appliquées à la Chimie Structurale, F-13397 Marseille, France, Aix-Marseille Université, Fédération des Sciences Chimiques, Spectropôle, case 511, avenue Escadrille Normandie
| | - Frédéric Fotiadu
- Laboratoire Chirosciences, UMR 6263 CNRS: Institut des Sciences Moléculaires de Marseille ISM2, École Centrale Marseille, Université Paul Cézanne, case A62, Avenue Escadrille Normandie-Niemen, 13397 Marseille Cedex 20, France, Universités Aix-Marseille I, II, and III - CNRS, UMR 6264: Laboratoire Chimie, Provence, Spectrométries Appliquées à la Chimie Structurale, F-13397 Marseille, France, Aix-Marseille Université, Fédération des Sciences Chimiques, Spectropôle, case 511, avenue Escadrille Normandie
| | - Gérard Buono
- Laboratoire Chirosciences, UMR 6263 CNRS: Institut des Sciences Moléculaires de Marseille ISM2, École Centrale Marseille, Université Paul Cézanne, case A62, Avenue Escadrille Normandie-Niemen, 13397 Marseille Cedex 20, France, Universités Aix-Marseille I, II, and III - CNRS, UMR 6264: Laboratoire Chimie, Provence, Spectrométries Appliquées à la Chimie Structurale, F-13397 Marseille, France, Aix-Marseille Université, Fédération des Sciences Chimiques, Spectropôle, case 511, avenue Escadrille Normandie
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Calvo E, Luu-The V, Morissette J, Martel C, Labrie C, Bernard B, Bernerd F, Deloche C, Chaussade V, Leclaire J, Labrie F. Pangenomic changes induced by DHEA in the skin of postmenopausal women. J Steroid Biochem Mol Biol 2008; 112:186-93. [PMID: 19013239 DOI: 10.1016/j.jsbmb.2008.10.008] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/22/2008] [Accepted: 10/08/2008] [Indexed: 01/06/2023]
Abstract
The objective of this study was to explore, for the first time, the changes in the pangenomic profile induced in human skin in women treated with dehydroepiandrosterone (DHEA) applied locally. Sixty postmenopausal women participated in this phase II prospective, randomized, double-blind and placebo-controlled study. Women were randomized to the twice daily local application of 0% (placebo), 0.3%, 1% or 2% DHEA cream. Changes in the pangenomic expression profile were studied using Affymetrix Genechips. Significant changes (p<0.05) in sixty-six DHEA-responsive probe sets corresponding to 52 well-characterized genes and 9 unknown gene sequences were identified. A dose-dependent increase in the expression of several members of the collagen family was observed, namely COL1, COL3 and COL5 as well as the concomitant modulation of SPARC, a gene required for the normal deposition and maturation of collagen fibrils in the dermis. Several genes involved in the proliferation and differentiation of keratinocytes were also modulated. In addition, topical DHEA reduced the expression of genes associated with the terminal differentiation and cornification of keratinocytes. Our results strongly suggest the possibility that DHEA could exert an anti-aging effect in the skin through stimulation of collagen biosynthesis, improved structural organization of the dermis while modulating keratinocyte metabolism.
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Affiliation(s)
- E Calvo
- Oncology and Molecular Endocrinology Research Center, Centre de recherche du Centre hospitalier de l'Université Laval (CHUL Research Center), Québec City, Quebec, G1V 4G2 Canada
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24
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Rodriguez JA, Mendoza LD, Pezzotti F, Vanthuyne N, Leclaire J, Verger R, Buono G, Carriere F, Fotiadu F. Novel chromatographic resolution of chiral diacylglycerols and analysis of the stereoselective hydrolysis of triacylglycerols by lipases. Anal Biochem 2007; 375:196-208. [PMID: 18162167 DOI: 10.1016/j.ab.2007.11.036] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2007] [Revised: 11/20/2007] [Accepted: 11/27/2007] [Indexed: 11/17/2022]
Abstract
In the present study, we propose a general and accessible method for the resolution of enantiomeric 1,2-sn- and 2,3-sn-diacylglycerols based on derivatization by isocyanates, which can be easily used routinely by biochemists to evaluate the stereopreferences of lipases in a time course of triacylglycerol (TAG) hydrolysis. Diacylglycerol (DAG) enantiomers were transformed into carbamates using achiral and commercially available reagents. Excellent separation and resolution factors were obtained for diacylglycerols present in lipolysis reaction mixtures. This analytical method was then applied to investigate the stereoselectivity of three model lipases (porcine pancreatic lipase, PPL; lipase from Rhizomucor miehei, MML; and recombinant dog gastric lipase, rDGL) in the time course of hydrolysis of prochiral triolein as a substrate. From the measurements of the diglyceride enantiomeric excess it was confirmed that PPL was not stereospecific (position sn-1 vs sn-3 of triolein), whereas MML and rDGL preferentially hydrolyzed the ester bond at position sn-1 and sn-3, respectively. The enantiomeric excess of DAGs was not constant with time, decreasing with the course of hydrolysis. This was due to the fact that DAGs can be products of the stereospecific hydrolysis of TAGs and substrates for stereospecific hydrolysis into monoacylglycerols.
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Affiliation(s)
- J A Rodriguez
- Laboratory of Enzymology at Interfaces and Physiology of Lipolysis, CNRS-UPR 9025-IBSM, 13009 Marseille, France
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25
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Affiliation(s)
- Peter T Corbett
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, United Kingdom
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26
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Leclaire J, Dagiral R, Pla-Quintana A, Caminade AM, Majoral JP. Metallated Phthalocyanines as the Core of Dendrimers – Synthesis and Spectroscopic Studies. Eur J Inorg Chem 2007. [DOI: 10.1002/ejic.200601235] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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27
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Aloulou A, Rodriguez JA, Puccinelli D, Mouz N, Leclaire J, Leblond Y, Carrière F. Purification and biochemical characterization of the LIP2 lipase from Yarrowia lipolytica. Biochim Biophys Acta Mol Cell Biol Lipids 2006; 1771:228-37. [PMID: 17270492 DOI: 10.1016/j.bbalip.2006.12.006] [Citation(s) in RCA: 74] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2006] [Revised: 12/14/2006] [Accepted: 12/14/2006] [Indexed: 11/17/2022]
Abstract
The LIP2 lipase from the yeast Yarrowia lipolytica (YLLIP2) was obtained from two genetically modified strains with multi-copies of the lip2 gene and further purified using gel filtration and cation exchange chromatography. Four YLLIP2 isoforms were identified and subjected to N-terminal amino-acid sequencing and mass spectrometry analysis. These isoforms differed in their glycosylation patterns and their molecular masses ranged from 36,874 to 38,481 Da, whereas the polypeptide mass was 33,385 Da. YLLIP2 substrate specificity was investigated using short (tributyrin), medium (trioctanoin) and long (olive oil) chain triglyceride substrates at various pH and bile salt concentrations, and compared with those of human gastric and pancreatic lipases. YLLIP2 was not inhibited by bile salts at micellar concentrations with any of the substrates tested, and maximum specific activities were found to be 10,760+/-115 U/mg on tributyrin, 16,920+/-480 U/mg on trioctanoin and 12,260+/-700 U/mg on olive oil at pH 6.0. YLLIP2 was found to be fairly stable and still active on long chain triglycerides (1590+/-430 U/mg) at pH 4.0, in the presence of bile salts. It is therefore a good candidate for use in enzyme replacement therapy as a means of treating pancreatic exocrine insufficiency.
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Affiliation(s)
- Ahmed Aloulou
- Laboratory of Enzymology at Interfaces and Physiology of Lipolysis, CNRS-UPR 9025-IBSM, 31 Chemin Joseph-Aiguier, 13009 Marseille, France
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28
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Abstract
Polyamines play an important role in biology, yet their exact function in many processes is poorly understood. Artificial host molecules capable of sequestering polyamines could be useful tools for studying their cellular function. However, designing synthetic receptors with affinities sufficient to compete with biological polyamine receptors remains a huge challenge. Binding affinities of synthetic hosts are typically separated by a gap of several orders of magnitude from those of biomolecules. We now report that a dynamic combinatorial selection approach can deliver a synthetic receptor that bridges this gap. The selected receptor binds spermine with a dissociation constant of 22 nM, sufficient to remove it from its natural host DNA and reverse some of the biological effects of spermine on the nucleic acid. In low concentrations, spermine induces the formation of left-handed DNA, but upon addition of our receptor, the DNA reverts back to its right-handed form. NMR studies and computer simulations suggest that the spermine complex has the form of a pseudo-rotaxane. The spermine receptor is a promising lead for the development of therapeutics or molecular probes for elucidating spermine's role in cell biology.
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Affiliation(s)
- Laurent Vial
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, United Kingdom
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29
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Leclaire J, Dagiral R, Fery-Forgues S, Coppel Y, Donnadieu B, Caminade AM, Majoral JP. Octasubstituted Metal-Free Phthalocyanine as Core of Phosphorus Dendrimers: A Probe for the Properties of the Internal Structure. J Am Chem Soc 2005; 127:15762-70. [PMID: 16277519 DOI: 10.1021/ja054797b] [Citation(s) in RCA: 79] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The synthesis of a new family of phosphorus dendrimers built from an octasubstituted metal-free phthalocyanine core is described up to generation 5. This core is used as a sensor and a probe for analyzing the properties of the internal structure and the influence of each structural part (core, branches, surface) upon the whole structure. UV-visible spectra show both a hyperchromic and bathochromic effect on the Q-bands with increasing generation, indicating that the chromophore is more isolated, and that the dendritic shell mimics a highly polar solvent. There is no evidence for aggregation, except for generation 0, showing again the isolation of the core. However, the dendritic shell is permeable to aqueous acids and bases, as demonstrated by the reversible splitting of the Q-band in an acidic medium (neutral form of the phthalocyanine) and the single Q-band in a basic medium (dianionic form), even for generation 4. The fluorescence quantum yield for the neutral form increases with increasing generation. The dianionic form of generation 0 is poorly fluorescent, whereas generations 3 and 4 (G3 and G4) exhibit better fluorescence. The cores of G3 and G4 are highly sensitive optical sensors for H3O+ and OH-. These experiments are carried out in THF/water mixtures, and the influence of water on the structure has been checked. The hydrodynamic radius of generation 4 is measured by NMR diffusion (pulse gradient spin-echo) experiments. R(H) varies from 35.4 A at 4 mol % of water to 32.5 A at 64 mol % of water in THF, indicating the hydrophobic nature of these dendrimers.
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Affiliation(s)
- Julien Leclaire
- Laboratoire de Chimie de Coordination du CNRS, 205 route de Narbonne, 31077 Toulouse Cedex 4, France
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Maszewska M, Leclaire J, Cieslak M, Nawrot B, Okruszek A, Caminade AM, Majoral JP. Water-soluble polycationic dendrimers with a phosphoramidothioate backbone: preliminary studies of cytotoxicity and oligonucleotide/plasmid delivery in human cell culture. Oligonucleotides 2005; 13:193-205. [PMID: 15000835 DOI: 10.1089/154545703322460586] [Citation(s) in RCA: 88] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
A series of water-soluble polycationic dendrimers with a phosphoramidothioate backbone (P-dendrimers) was studied in human cell culture. Preliminary studies have shown that P-dendrimers of series 1 and 2, possessing N,N-diethyl-ethylenediamine hydrochloride functions at the surface, show rather moderate cytotoxicity toward HeLa, HEK 293, and HUVEC cells in a standard MTT assay in serum-containing medium, generally lower than lipofectin. The experiments of cellular uptake have shown the necessity for the presence of serum for transfection with P-dendrimers of series 1 and 2. These compounds efficiently delivered fluorescein-labeled oligodeoxyribonucleotide into HeLa cells in serum-containing medium, but they failed to do so in HUVEC cell culture. The dendrimers were found to be successful mediators of transfection of the HeLa cells with a DNA plasmid containing the functional gene of enhanced green fluorescent protein (EGFP).
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Affiliation(s)
- Maria Maszewska
- Department of Bioorganic Chemistry, Centre of Molecular and Macromolecular Studies, Polish Academy of Sciences, 90-363 Lodz, Poland
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Kim DH, Karan P, Göring P, Leclaire J, Caminade AM, Majoral JP, Gösele U, Steinhart M, Knoll W. Formation of dendrimer nanotubes by layer-by-layer deposition. Small 2005; 1:99-102. [PMID: 17193358 DOI: 10.1002/smll.200400024] [Citation(s) in RCA: 48] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Affiliation(s)
- Dong Ha Kim
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany.
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32
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Leclaire J, Vial L, Otto S, Sanders JKM. Expanding diversity in dynamic combinatorial libraries: simultaneous exchange of disulfide and thioester linkages. Chem Commun (Camb) 2005:1959-61. [PMID: 15834471 DOI: 10.1039/b500638d] [Citation(s) in RCA: 84] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Dynamic combinatorial libraries have been prepared which feature two simultaneous covalent exchange reactions in aqueous solution at neutral pH. This allows for diversity, not only of the subunits that are linked, but also of the linkage itself.
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Affiliation(s)
- Julien Leclaire
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, UK CB2 1EW
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Méhul B, Asselineau D, Bernard D, Leclaire J, Régnier M, Schmidt R, Bernerd F. Gene expression profiles of three different models of reconstructed human epidermis and classical cultures of keratinocytes using cDNA arrays. Arch Dermatol Res 2004; 296:145-56. [PMID: 15338239 DOI: 10.1007/s00403-004-0491-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
The gene expression profiles of three different models of reconstructed human epidermis were analyzed in a comparative study using cDNA array technology. The study also included normal human subconfluent keratinocytes cultured on plastic. Arrays were custom-made and comprised 504 known genes related to cutaneous biology. The gene expression profiles of the three reconstructed epidermis models shared 86% similarity; only 22 of the 504 examined genes showed a different expression level. A comparison of the 3D models with keratinocyte cultures on plastic dishes revealed a set of six genes with a considerably higher expression in the 3D models. These genes were keratin 1, corneodesmosin, filaggrin, loricrin, calmodulin-like skin protein and caspase 14, all related to keratinocyte terminal differentiation. The reported data may contribute to a better understanding and characterization of reconstructed epidermal models and may also serve as established references for investigations related to epidermal differentiation and proliferation.
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Affiliation(s)
- B Méhul
- L'Oréal, Centre Charles Zviak, 90 rue du Général Roguet, 92583 Clichy, France
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34
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Solassol J, Crozet C, Perrier V, Leclaire J, Béranger F, Caminade AM, Meunier B, Dormont D, Majoral JP, Lehmann S. Cationic phosphorus-containing dendrimers reduce prion replication both in cell culture and in mice infected with scrapie. J Gen Virol 2004; 85:1791-1799. [PMID: 15166465 DOI: 10.1099/vir.0.19726-0] [Citation(s) in RCA: 136] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Over the last 30 years, many drugs have been tested both in cell culture and in vivo for their ability to prevent the generation of prions and the development of transmissible spongiform encephalopathies. Among the compounds tested, dendrimers are defined by their branched and repeating molecular structure. The anti-prion activity of new cationic phosphorus-containing dendrimers (P-dendrimers) with tertiary amine end-groups was tested. These molecules had a strong anti-prion activity, decreasing both PrP(Sc) and infectivity in scrapie-infected cells at non-cytotoxic doses. They can bind PrP and decrease the amount of pre-existing PrP(Sc) from several prion strains, including the BSE strain. More importantly, when tested in a murine scrapie model, the dendrimers were able to decrease PrP(Sc) accumulation in the spleen by more than 80 %. These molecules have a high bio-availability and therefore exhibit relevant potential for prion therapeutics for at least post-exposure prophylaxis.
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Affiliation(s)
- Jérôme Solassol
- Institut de Génétique Humaine du CNRS, 141 rue de la Cardonille, 34396 Montpellier, France
| | - Carole Crozet
- Institut de Génétique Humaine du CNRS, 141 rue de la Cardonille, 34396 Montpellier, France
| | - Véronique Perrier
- Institut de Génétique Humaine du CNRS, 141 rue de la Cardonille, 34396 Montpellier, France
| | - Julien Leclaire
- Laboratoire de Chimie de Coordination du CNRS, 205 route de Narbonne, 31077 Toulouse, France
| | - Florence Béranger
- Institut de Génétique Humaine du CNRS, 141 rue de la Cardonille, 34396 Montpellier, France
| | - Anne-Marie Caminade
- Laboratoire de Chimie de Coordination du CNRS, 205 route de Narbonne, 31077 Toulouse, France
| | - Bernard Meunier
- Laboratoire de Chimie de Coordination du CNRS, 205 route de Narbonne, 31077 Toulouse, France
| | - Dominique Dormont
- Service de Neurovirologie, CEA, CRSSA, EPHE, BP 6, 92265 Fontenay aux Roses cedex, France
| | - Jean-Pierre Majoral
- Laboratoire de Chimie de Coordination du CNRS, 205 route de Narbonne, 31077 Toulouse, France
| | - Sylvain Lehmann
- Laboratoire de Biochimie, Hôpital St Eloi, 80 av. A. Fliche, 34295 Montpellier Cedex 5, France
- Institut de Génétique Humaine du CNRS, 141 rue de la Cardonille, 34396 Montpellier, France
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Benech-Kieffer F, Meuling WJA, Leclerc C, Roza L, Leclaire J, Nohynek G. Percutaneous absorption of Mexoryl SX in human volunteers: comparison with in vitro data. Skin Pharmacol Physiol 2004; 16:343-55. [PMID: 14528058 DOI: 10.1159/000072929] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2002] [Indexed: 11/19/2022]
Abstract
The potential human health risk of UV filters depends on their toxicity and the human systemic exposure which is a function of the extent of percutaneous absorption of the topically applied substance into the human organism. Using a 'mass balance' approach, a study was designed to investigate the systemically absorbed dose of [(14)C]-Mexoryl SX((R)) in humans after topical application of a typical sunscreen emulsion. In addition, to assess the correlation with in vitro experiments, the percutaneous absorption of this UVA filter through isolated human skin was measured under identical exposure conditions. When applied in vivo for a period of 4 h, 89-94% of the applied radioactivity was recovered from the wash-off samples. In urine samples, the radioactivity slightly exceeded background levels and corresponded maximally to 0.014% of the topically applied dose. No radioactivity was measured in blood or faeces sampled up to 120 h after application. In vitro, 24 h after a 4-hour application, [(14)C]-Mexoryl SX remained primarily on the skin surface. The mean in vitro absorption over 24 h, adding up the amounts found in the dermis and receptor fluid, was 0.16% of the applied dose. It is concluded from the in vivo pharmacokinetic results that the systemically absorbed dose of [(14)C]-Mexoryl SX is less than 0.1%. The order of magnitude of this value correlates well with the corresponding in vitro data which overestimate the in vivo results as previously observed with other hydrophilic compounds. This study demonstrates that, under realistic exposure conditions, the human systemic exposure to this UVA filter is negligible and poses no risk to human health.
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Affiliation(s)
- F Benech-Kieffer
- Recherche, L'Oréal, Advanced Researched Life Sciences, Aulnay-sous-Bois, France.
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36
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Abstract
The behavior of a fifth generation phosphorus dendrimer having a hydrophobic interior and hydrophilic end groups is studied in solution in water using the pulsed-field gradient spin-echo NMR technique. Addition of THF to this solution induces dramatic changes concerning the size of the dendrimer (+150% in volume), T1 relaxation of THF, and viscosity. This dendrimer behaves like a highly singular nanotool, able both to modify its environment and to be modified by it.
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Affiliation(s)
- Julien Leclaire
- Laboratoire de Chimie de Coordination CNRS, 205 route de Narbonne, 31077 Toulouse Cedex 4, France
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Caminade AM, Maraval V, Laurent R, Turrin CO, Sutra P, Leclaire J, Griffe L, Marchand P, Baudoin-Dehoux C, Rebout C, Majoral JP. Phosphorus dendrimers: from synthesis to applications. CR CHIM 2003. [DOI: 10.1016/j.crci.2003.04.009] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.0] [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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Dreher F, Patouillet C, Fouchard F, Zanini M, Messager A, Roguet R, Cottin M, Leclaire J, Benech-Kieffer F. Improvement of the experimental setup to assess cutaneous bioavailability on human skin models: dynamic protocol. Skin Pharmacol Physiol 2003; 15 Suppl 1:31-9. [PMID: 12476007 DOI: 10.1159/000066683] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Human skin models, such as EpiDerm and Episkin, are not easily mounted into static or dynamic diffusion cells that are commonly used to perform bioavailability studies with human skin ex vivo. For various reasons, such as fragility, small sample size, and other morphological constraints, skin absorption studies with human skin models are often carried out on the delimited skin surface obtained by gluing a ring onto the reconstituted epidermis and manually exchanging the receptor solution. However, such an experimental setup is prone to artifacts. Discontinuous removal of the receptor fluid leads to alternating sink conditions, and an area of application smaller than the area in contact with the receptor fluid, as well as imperfect seal of the glued ring, may result in inaccurate penetration rates. Human skin models were shown to be relatively easily mounted into In-Line cells (PermeGear Inc.), vertical diffusion cells which appear to be appropriately designed for such a purpose. In-Line cells allowed accurate determination of solute penetration as well as automated sampling of receptor fluid. Excised human skin can be mounted into these cells as well, making it possible to compare penetration rates through different types of skin samples under identical conditions. Using mannitol as a reference compound, penetration profiles and epidermal distribution similar to those obtained with human skin ex vivo were obtained both with EpiDerm and Episkin. Under the present conditions, human skin models were more permeable to mannitol than excised human skin, which was only slightly permeable to mannitol. Due to these experimental innovations and to the good agreement with the absorption characteristics through human skin ex vivo, EpiDerm and Episkin seem to be promising human skin models for testing the cutaneous bioavailability of topical products in vitro.
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Affiliation(s)
- F Dreher
- L'Oréal Research, Aulnay-sous-Bois, France.
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Turrin CO, Maraval V, Leclaire J, Dantras E, Lacabanne C, Caminade AM, Majoral JP. Surface, core, and structure modifications of phosphorus-containing dendrimers. Influence on the thermal stability. Tetrahedron 2003. [DOI: 10.1016/s0040-4020(03)00465-4] [Citation(s) in RCA: 39] [Impact Index Per Article: 1.9] [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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Hernandez-Lopez J, Bauer R, Chang WS, Glasser G, Grebel-Koehler D, Klapper M, Kreiter M, Leclaire J, Majoral JP, Mittler S, Müllen K, Vasilev K, Weil T, Wu J, Zhu T, Knoll W. Functional polymers as nanoscopic building blocks. Materials Science and Engineering: C 2003. [DOI: 10.1016/s0928-4931(02)00256-4] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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41
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Trévisiol E, Le Berre-Anton V, Leclaire J, Pratviel G, Caminade AM, Majoral JP, François JM, Meunier B. Dendrislides, dendrichips: a simple chemical functionalization of glass slides with phosphorus dendrimers as an effective means for the preparation of biochips. NEW J CHEM 2003. [DOI: 10.1039/b307928g] [Citation(s) in RCA: 80] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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42
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Roguet R, Cohen C, Leclaire J, Tessonneaud E, Gagne C, Teissier M. Use of a standardized reconstructed epidermis kit to assessin vitrothe tolerance and the efficacy of cosmetics. Int J Cosmet Sci 2000. [DOI: 10.1111/j.1468-2494.2000.00016.x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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43
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Roguet R, Cohen C, Leclaire J, Tessonneaud E, Gagne C, Teissier M. Use of a standardized reconstructed epidermis kit to assess in vitro the tolerance and the efficacy of cosmetics. Int J Cosmet Sci 2000. [DOI: 10.1046/j.1467-2494.2000.00016.x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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44
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Roguet R, Cohen C, Leclaire J, Tessonneaud E, Gagne C, Teissier MH. Use of a standardized reconstructed epidermis kit to assess in vitro the tolerance and the efficacy of cosmetics. Int J Cosmet Sci 2000; 22:409-419. [PMID: 18503428] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
The development and validation of alternative methods to animal testing is one of the major priorities for the cosmetic industry. These methods must be reproducible and predictive of the effect of cosmetics during normal use by the consumer. Among alternative methods recently proposed, those using reconstructed human epidermis kits are the most promising approach for this purpose, as these models mimic the site of product application, allow topical application and the assessment of some clinical reactions. However, the realistic use of these models requires reproducibility and relevance of the results. The achievement of these conditions could allow the evaluation of large amounts of products, their comparisons and the generation of data banks on finished products and their ingredients. Only kits manufactured on an industrial scale and in stringent conditions of quality assurance can meet these requirements. As an example, both the criteria for industrial scale usage and the results of reproducibility of results obtained over a 4-year period (135 batches) are reported here, in terms of histological and biochemical criteria (generally used to assess the efficacy or tolerance), for a reconstructed human epidermis elaborated as a kit, EPISKIN(R). These results may provide the framework for a validation and recognition of the model, within guidelines for the assessment of the efficacy and tolerance of cosmetics.
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Affiliation(s)
- R Roguet
- L’Oreal Life Science Research, 90 rue du général Roguet, 92583 Clichy Cedex, France
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45
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Benech-Kieffer F, Wegrich P, Schwarzenbach R, Klecak G, Weber T, Leclaire J, Schaefer H. Percutaneous absorption of sunscreens in vitro: interspecies comparison, skin models and reproducibility aspects. Skin Pharmacol Appl Skin Physiol 2000; 13:324-35. [PMID: 11096374 DOI: 10.1159/000029940] [Citation(s) in RCA: 94] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Appropriate evaluation of sunscreens is required to provide better knowledge of their safety and efficacy. One of the most important elements of this evaluation is the assessment of percutaneous absorption. In vitro methods are largely used for such assessments, and the accuracy of the measurements generated with these methods depends on the use of a proper methodology. This study was designed to evaluate an in vitro protocol for investigating the percutaneous absorption of two sunscreens under standardized experimental conditions. Octyl methoxycinnamate and benzophenone 4 were each incorporated in a typical oil-in-water emulsion and tested separately. Salicylic acid was tested as a reference compound. In vitro percutaneous absorption was evaluated using two species, the pig and human, and two models, full-thickness and split-thickness skin. The reproducibility of study results was evaluated by comparing the data generated by two industrial laboratories, L'Oréal and Hoffmann-La Roche. The correlation of quantitative data between pig skin and human skin was very good, and the split-thickness skin model seemed to be more appropriate for measuring the absorption of sunscreens. Results obtained for salicylic acid demonstrated the relevance of the protocol in terms of prediction of in vivo percutaneous absorption. Finally, the comparison of pig skin data between the two laboratories demonstrated a good correlation and underlined the need for a standardized in vitro procedure.
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Affiliation(s)
- F Benech-Kieffer
- Life Sciences, Advanced Research Laboratories, L'Oréal, Aulnay-sous-Bois, France
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46
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Herouet C, Cottin M, Galanaud P, Leclaire J, Rousset F. Contact sensitizers decrease 33D1 expression on mature Langerhans cells. Eur J Dermatol 1999; 9:185-90. [PMID: 10210782] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/12/2023]
Abstract
Langerhans cells play a critical role in allergic contact hypersensitivity. In vivo, these cells capture xenobiotics that penetrate the skin and transport them through the lymphatic vessels into regional lymph nodes for presentation to T cells. During this migration step, Langerhans cells become mature dendritic cells according to their phenotype and their high immunostimulatory capacity. In vitro, when isolated from the skin and cultured for 3 days, Langerhans cells undergo similar phenotypic and functional maturation. In this study, the capacity of sensitizers, irritants and neutral chemicals to modulate the surface marker expression and morphology of pure mature murine Langerhans cells in vitro was examined. Contact with 4 sensitizers (2,4-dinitrobenzenesulfate, 4-ethoxymethylene-2-phenyl-2-oxazolin-5-one, p-phenylenediamine, mercaptobenzo-thiazole) resulted in a rapid, specific, marked fall in 33D1 expression, a murine specific dendritic cell marker. No effect was observed with 2 neutral chemicals (sodium chloride, methyl nicotinate) or 2 irritants (dimethyl sulfoxide, benzalkonium chloride). Nevertheless, sodium lauryl sulfate, a very irritant detergent, altered morphology and down-regulated all membrane markers. These preliminary data suggest that in vitro modulation of 33D1 expression by strong sensitizers may be an approach to the development of an in vitro model for the identification of chemicals that have the potential to cause skin sensitization and to distinguish them as far as possible from irritants.
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Affiliation(s)
- C Herouet
- L'Oréal Advanced Research, Life Sciences Research, 1, avenue Eugène-Schueller, BP 22, 93601 Aulnay-sous-Bois Cedex, France
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47
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Schwalen S, Leclaire J, Rechlin M, Jörg J. Sleep related breathing disturbances and nocturnal akinesia in Parkinson's disease patients: a cross section study. Eur J Neurol 1997. [DOI: 10.1111/j.1468-1331.1997.tb00362.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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48
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Cotovio J, Roguet R, Pion FX, Rougier A, Leclaire J. Effect of imidazole derivatives on cytochrome P-450 enzyme activities in a reconstructed human epidermis. Skin Pharmacol 1996; 9:242-9. [PMID: 8896115 DOI: 10.1159/000211421] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
We tested the effect of various imidazole derivatives applied topically, on P-450-dependent enzyme activity of a reconstructed epidermis in conditions simulating clinical use. At nontoxic concentrations (determined by a cytotoxicity test based on the reduction of a tetrazolium salt, MTT, by mitochondrial deshydrogenase) econazole and clotrimazole had a biphasic effect on 7-ethoxycoumarin-O-deethylase (ECOD) activity in the epidermis, with induction at low concentrations and inhibition at high concentrations. Dermatological preparations (emulsions, gels) containing imidazole derivatives, which are nontoxic for the epidermis, decreased ECOD activity by about 40% 18 h after topical application. These results are in keeping with in vivo observations after topical application, and stress the value of the reconstructed epidermis for pharmacotoxicological and mechanistic studies of topical agents used in dermatology.
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Affiliation(s)
- J Cotovio
- L'OREAL Advanced Research Center, Aulnay-sous-Bois, France
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49
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Garrigue JL, Catroux P, Leclaire J. Predictive molecular and genetic toxicology. Application to the detection of sensitizing potential of xenobiotics. Clin Rev Allergy Immunol 1995; 13:189-200. [PMID: 8535926 DOI: 10.1007/bf02771760] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Affiliation(s)
- J L Garrigue
- Life Science Research of L'Oréal, Central Department of Products Safety, Aulnay-Sous-Bois, France
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50
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Roguet R, Cohen C, Rougier A, Leclaire J. Measurement of proinflammatory mediator production by cultured keratinocytes. Curr Probl Dermatol 1995; 23:230-42. [PMID: 9035918 DOI: 10.1159/000424319] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Affiliation(s)
- R Roguet
- L'Oréal Basic Research Center, Aulnay-sous-Bois, France
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