1
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Riporto F, Dhouib A, Gheata A, Beauquis S, Molina E, Guené-Girard S, Galez C, Bornet A, Gautier-Luneau I, Gerber-Lemaire S, Monnier V, Le Dantec R, Mugnier Y. Nonclassical Nucleation and Crystallization of LiNbO 3 Nanoparticles from the Aqueous Solvothermal Alkoxide Route. Small 2023:e2306417. [PMID: 37968253 DOI: 10.1002/smll.202306417] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/28/2023] [Revised: 10/09/2023] [Indexed: 11/17/2023]
Abstract
The exact molecular reaction pathway and crystallization mechanisms of LiNbO3 nanoparticles under solvothermal conditions are derived through extensive time- and temperature-resolved experiments allowing to track all the transient molecular and solid species. Starting with a simple mixing of Li/Nb ethoxides, water addition is used to promote condensation after ligand exchange with different co-solvents including alcohols and glycols of variable carbon-chain length. A nonclassical nucleation scheme is first demonstrated after the identification of new octanuclear complexes with a {Li4 Nb4 O10 } core whose solvophobic interactions mediate their aggregation, thus, resulting in a colloidal gel at room-temperature. Upon heating, a more or less frustrated aggregation-mediated crystallization process is then evidenced leading to LiNbO3 nanocrystals of adjustable mean size between 20 and 100 nm. Such a fine control can be attributed to the variable Nb-OR (R = alkoxy/glycoxy ligand) binding interactions at the surface of crystalline intermediates. Demonstration of such a nonclassical nucleation process and crystallization mechanism for LiNbO3 not only sheds light on the entire growth process of multifunctional nanomaterials with non-perovskite crystalline structures, but also opens new avenues for the identification of novel bimetallic oxoclusters involved in the formation of several mixed oxides from the aqueous alkoxide route.
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Affiliation(s)
- Florian Riporto
- Université Savoie Mont Blanc, SYMME, Annecy, F-74000, France
| | - Ameni Dhouib
- Université Savoie Mont Blanc, SYMME, Annecy, F-74000, France
| | - Adrian Gheata
- Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne, Group for Functionalized Biomaterials, Lausanne, 1015, Switzerland
| | | | - Emilie Molina
- Université Savoie Mont Blanc, SYMME, Annecy, F-74000, France
| | - Simon Guené-Girard
- Université Grenoble Alpes, CNRS, Grenoble INP, Institut Néel, Grenoble, 38000, France
| | - Christine Galez
- Université Savoie Mont Blanc, SYMME, Annecy, F-74000, France
| | - Aurélien Bornet
- Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne, Nuclear Magnetic Resonance Platform, EPFL SB ISIC-NMRP, Batochime, Lausanne, 1015, Switzerland
| | | | - Sandrine Gerber-Lemaire
- Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne, Group for Functionalized Biomaterials, Lausanne, 1015, Switzerland
| | - Virginie Monnier
- Univ Lyon, Ecole Centrale de Lyon, CNRS, INSA Lyon, Université Claude Bernard Lyon 1, CPE Lyon, CNRS, INL, UMR5270, Ecully, 69130, France
| | - Ronan Le Dantec
- Université Savoie Mont Blanc, SYMME, Annecy, F-74000, France
| | - Yannick Mugnier
- Université Savoie Mont Blanc, SYMME, Annecy, F-74000, France
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2
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Loiudice A, Segura Lecina O, Bornet A, Luther JM, Buonsanti R. Ligand Locking on Quantum Dot Surfaces via a Mild Reactive Surface Treatment. J Am Chem Soc 2021; 143:13418-13427. [PMID: 34375098 DOI: 10.1021/jacs.1c06777] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
At the outermost surface of colloidal QDs are organic surface ligands which dynamically bind and release in solution to control the growth kinetics, control the size/shape of the crystals, passivate surface states, and provide colloidal stability through favorable interactions with the solvent. However, the dynamicity comes at the expense of the stability of the QD suspension. Here, we show that ligands can be permanently locked on the QD surface by a thin layer of an inert metal oxide which forms within the ligand shell, over the headgroup. By interrogating the surface chemistry with different spectroscopic methods, we prove the ligand locking on the QD surface. As a result, an exceptional stability of the coated QD inks is achieved in a wide concentration range, even in the presence of chemically competing surface ligands in solution. We anticipate that this critical breakthrough will benefit different areas related to colloidal QDs, spanning from single-particle studies to displays and solar cells and biological applications. Furthermore, the same chemistry could be easily translated to surface treatments of bulk materials and thin films.
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Affiliation(s)
- Anna Loiudice
- Laboratory of Nanochemistry for Energy Research, Institute of Chemical Sciences and Engineering, Ecole Politechnique Fédérale de Lausanne, Sion CH-1950, Switzerland
| | - Ona Segura Lecina
- Laboratory of Nanochemistry for Energy Research, Institute of Chemical Sciences and Engineering, Ecole Politechnique Fédérale de Lausanne, Sion CH-1950, Switzerland
| | - Aurélien Bornet
- Institute of Chemical Sciences and Engineering, Ecole Politechnique Fédérale de Lausanne, Sion CH-1950, Switzerland
| | - Joseph M Luther
- National Renewable Energy Laboratory (NREL), Golden, Colorado 80401, United States
| | - Raffaella Buonsanti
- Laboratory of Nanochemistry for Energy Research, Institute of Chemical Sciences and Engineering, Ecole Politechnique Fédérale de Lausanne, Sion CH-1950, Switzerland
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3
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El Daraï T, Cousin SF, Stern Q, Ceillier M, Kempf J, Eshchenko D, Melzi R, Schnell M, Gremillard L, Bornet A, Milani J, Vuichoud B, Cala O, Montarnal D, Jannin S. Porous functionalized polymers enable generating and transporting hyperpolarized mixtures of metabolites. Nat Commun 2021; 12:4695. [PMID: 34349114 PMCID: PMC8338986 DOI: 10.1038/s41467-021-24279-2] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2021] [Accepted: 06/03/2021] [Indexed: 02/07/2023] Open
Abstract
Hyperpolarization by dissolution dynamic nuclear polarization (dDNP) has enabled promising applications in spectroscopy and imaging, but remains poorly widespread due to experimental complexity. Broad democratization of dDNP could be realized by remote preparation and distribution of hyperpolarized samples from dedicated facilities. Here we show the synthesis of hyperpolarizing polymers (HYPOPs) that can generate radical- and contaminant-free hyperpolarized samples within minutes with lifetimes exceeding hours in the solid state. HYPOPs feature tunable macroporous porosity, with porous volumes up to 80% and concentration of nitroxide radicals grafted in the bulk matrix up to 285 μmol g-1. Analytes can be efficiently impregnated as aqueous/alcoholic solutions and hyperpolarized up to P(13C) = 25% within 8 min, through the combination of 1H spin diffusion and 1H → 13C cross polarization. Solutions of 13C-analytes of biological interest hyperpolarized in HYPOPs display a very long solid-state 13C relaxation times of 5.7 h at 3.8 K, thus prefiguring transportation over long distances.
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Affiliation(s)
- Théo El Daraï
- Université de Lyon, Centre de RMN à Très Hauts Champs de Lyon, UMR5082 - CNRS/UCBL/ENS de Lyon, Villeurbanne, France
- Université de Lyon, CPE Lyon, CNRS, Catalyse, Chimie, Polymères et Procédés, UMR 5265, Lyon, France
| | - Samuel F Cousin
- Université de Lyon, Centre de RMN à Très Hauts Champs de Lyon, UMR5082 - CNRS/UCBL/ENS de Lyon, Villeurbanne, France.
| | - Quentin Stern
- Université de Lyon, Centre de RMN à Très Hauts Champs de Lyon, UMR5082 - CNRS/UCBL/ENS de Lyon, Villeurbanne, France
| | - Morgan Ceillier
- Université de Lyon, Centre de RMN à Très Hauts Champs de Lyon, UMR5082 - CNRS/UCBL/ENS de Lyon, Villeurbanne, France
| | | | | | | | | | - Laurent Gremillard
- Université de Lyon, INSA Lyon, MATEIS UMR CNRS 5510, Bât. Blaise Pascal, Villeurbanne, France
| | - Aurélien Bornet
- Université de Lyon, Centre de RMN à Très Hauts Champs de Lyon, UMR5082 - CNRS/UCBL/ENS de Lyon, Villeurbanne, France
| | - Jonas Milani
- Université de Lyon, Centre de RMN à Très Hauts Champs de Lyon, UMR5082 - CNRS/UCBL/ENS de Lyon, Villeurbanne, France
| | - Basile Vuichoud
- Université de Lyon, Centre de RMN à Très Hauts Champs de Lyon, UMR5082 - CNRS/UCBL/ENS de Lyon, Villeurbanne, France
| | - Olivier Cala
- Université de Lyon, Centre de RMN à Très Hauts Champs de Lyon, UMR5082 - CNRS/UCBL/ENS de Lyon, Villeurbanne, France
| | - Damien Montarnal
- Université de Lyon, CPE Lyon, CNRS, Catalyse, Chimie, Polymères et Procédés, UMR 5265, Lyon, France.
| | - Sami Jannin
- Université de Lyon, Centre de RMN à Très Hauts Champs de Lyon, UMR5082 - CNRS/UCBL/ENS de Lyon, Villeurbanne, France
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4
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Elliott S, Cousin S, Chappuis Q, Cala O, Ceillier M, Bornet A, Jannin S. Dipolar order mediated 1H → 13C cross-polarization for dissolution-dynamic nuclear polarization. Magn Reson (Gott) 2020; 1:89-96. [PMCID: PMC10500725 DOI: 10.5194/mr-1-89-2020] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/07/2020] [Accepted: 04/16/2020] [Indexed: 11/01/2023]
Abstract
Magnetic resonance imaging and spectroscopy often suffer from a low intrinsic sensitivity, which can in some cases be circumvented by the use of hyperpolarization techniques. Dissolution-dynamic nuclear polarization offers a way of hyperpolarizing 13 C spins in small molecules, enhancing their sensitivity by up to 4 orders of magnitude. This is usually performed by direct 13 C polarization, which is straightforward but often takes more than an hour. Alternatively, indirect 1 H polarization followed by 1 H → 13 C polarization transfer can be implemented, which is more efficient and faster but is technically very challenging and hardly implemented in practice. Here we propose to remove the main roadblocks of the 1 H → 13 C polarization transfer process by using alternative schemes with the following: (i) less rf (radiofrequency) power; (ii) less overall rf energy; (iii) simple rf-pulse shapes; and (iv) no synchronized 1 H and 13 C rf irradiation. An experimental demonstration of such a simple 1 H → 13 C polarization transfer technique is presented for the case of [1-13 C ]sodium acetate, and is compared with the most sophisticated cross-polarization schemes. A polarization transfer efficiency of ∼ 0.43 with respect to cross-polarization was realized, which resulted in a 13 C polarization of ∼ 8.7 % after ∼ 10 min of microwave irradiation and a single polarization transfer step.
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Affiliation(s)
- Stuart J. Elliott
- Centre de Résonance Magnétique Nucléaire à Très
Hauts Champs – FRE 2034 Université de Lyon/CNRS/Université
Claude Bernard Lyon 1/ENS de Lyon, 5 Rue de la Doua, 69100 Villeurbanne,
France
| | - Samuel F. Cousin
- Centre de Résonance Magnétique Nucléaire à Très
Hauts Champs – FRE 2034 Université de Lyon/CNRS/Université
Claude Bernard Lyon 1/ENS de Lyon, 5 Rue de la Doua, 69100 Villeurbanne,
France
| | - Quentin Chappuis
- Centre de Résonance Magnétique Nucléaire à Très
Hauts Champs – FRE 2034 Université de Lyon/CNRS/Université
Claude Bernard Lyon 1/ENS de Lyon, 5 Rue de la Doua, 69100 Villeurbanne,
France
| | - Olivier Cala
- Centre de Résonance Magnétique Nucléaire à Très
Hauts Champs – FRE 2034 Université de Lyon/CNRS/Université
Claude Bernard Lyon 1/ENS de Lyon, 5 Rue de la Doua, 69100 Villeurbanne,
France
| | - Morgan Ceillier
- Centre de Résonance Magnétique Nucléaire à Très
Hauts Champs – FRE 2034 Université de Lyon/CNRS/Université
Claude Bernard Lyon 1/ENS de Lyon, 5 Rue de la Doua, 69100 Villeurbanne,
France
| | - Aurélien Bornet
- Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique
Fédérale de Lausanne (EPFL), Batochime, 1015 Lausanne, Switzerland
| | - Sami Jannin
- Centre de Résonance Magnétique Nucléaire à Très
Hauts Champs – FRE 2034 Université de Lyon/CNRS/Université
Claude Bernard Lyon 1/ENS de Lyon, 5 Rue de la Doua, 69100 Villeurbanne,
France
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5
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Doerig A, Bornet A, Choung OH, Herzog MH. Crowding reveals fundamental differences in local vs. global processing in humans and machines. Vision Res 2020; 167:39-45. [PMID: 31918074 DOI: 10.1016/j.visres.2019.12.006] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [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: 08/22/2019] [Revised: 12/10/2019] [Accepted: 12/16/2019] [Indexed: 11/17/2022]
Abstract
Feedforward Convolutional Neural Networks (ffCNNs) have become state-of-the-art models both in computer vision and neuroscience. However, human-like performance of ffCNNs does not necessarily imply human-like computations. Previous studies have suggested that current ffCNNs do not make use of global shape information. However, it is currently unclear whether this reflects fundamental differences between ffCNN and human processing or is merely an artefact of how ffCNNs are trained. Here, we use visual crowding as a well-controlled, specific probe to test global shape computations. Our results provide evidence that ffCNNs cannot produce human-like global shape computations for principled architectural reasons. We lay out approaches that may address shortcomings of ffCNNs to provide better models of the human visual system.
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Affiliation(s)
- A Doerig
- Laboratory of Psychophysics, Brain Mind Institute, Ecole Polytechnique Fédérale de Lausanne (EPFL), Switzerland.
| | - A Bornet
- Laboratory of Psychophysics, Brain Mind Institute, Ecole Polytechnique Fédérale de Lausanne (EPFL), Switzerland
| | - O H Choung
- Laboratory of Psychophysics, Brain Mind Institute, Ecole Polytechnique Fédérale de Lausanne (EPFL), Switzerland
| | - M H Herzog
- Laboratory of Psychophysics, Brain Mind Institute, Ecole Polytechnique Fédérale de Lausanne (EPFL), Switzerland
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6
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Baudin M, Vuichoud B, Bornet A, Bodenhausen G, Jannin S. A cryogen-consumption-free system for dynamic nuclear polarization at 9.4 T. J Magn Reson 2018; 294:115-121. [PMID: 30032035 DOI: 10.1016/j.jmr.2018.07.001] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/28/2018] [Revised: 06/20/2018] [Accepted: 07/01/2018] [Indexed: 05/15/2023]
Abstract
A novel system for dissolution dynamic nuclear polarization based on a cost-effective "cryogen-free" magnet that can generate fields up to 9.4 T with a sample space that can reach temperatures below 1.4 K in a continuous and stable manner. Polarization levels up to P(1H) = 60 ± 5% can be reached with TEMPOL in about 20 min, and P(13C) = 50 ± 5% can be achieved using adiabatic cross polarization.
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Affiliation(s)
- Mathieu Baudin
- Laboratoire des biomolécules, LBM, Département de chimie, École normale supérieure, PSL University, Sorbonne Université, CNRS, 75005 Paris, France.
| | - Basile Vuichoud
- Université de Lyon, CNRS, Université Claude Bernard Lyon 1, ENS de Lyon, Institut des Sciences Analytiques, UMR 5280, 69100 Villeurbanne, France
| | - Aurélien Bornet
- Institut des sciences et ingénierie chimiques (ISIC), Ecole PolytechniqueFédérale de Lausanne (EPFL), 1015 Lausanne, Switzerland
| | - Geoffrey Bodenhausen
- Laboratoire des biomolécules, LBM, Département de chimie, École normale supérieure, PSL University, Sorbonne Université, CNRS, 75005 Paris, France
| | - Sami Jannin
- Université de Lyon, CNRS, Université Claude Bernard Lyon 1, ENS de Lyon, Institut des Sciences Analytiques, UMR 5280, 69100 Villeurbanne, France
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7
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Cavaillès M, Bornet A, Jaurand X, Vuichoud B, Baudouin D, Baudin M, Veyre L, Bodenhausen G, Dumez JN, Jannin S, Copéret C, Thieuleux C. Tailored Microstructured Hyperpolarizing Matrices for Optimal Magnetic Resonance Imaging. Angew Chem Int Ed Engl 2018; 57:7453-7457. [PMID: 29457685 DOI: 10.1002/anie.201801009] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2018] [Indexed: 11/06/2022]
Abstract
Tailoring the physical features and the porous network architecture of silica-based hyperpolarizing solids containing TEMPO radicals, known as HYPSO (hybrid polarizing solids), enabled unprecedented performance of dissolution dynamic nuclear polarization (d-DNP). High polarization values up to P(1 H)=99 % were reached for samples impregnated with a mixture of H2 O/D2 O and loaded in a 6.7 T polarizer at temperatures around 1.2 K. These HYPSO materials combine the best performance of homogeneous DNP formulations with the advantages of solid polarizing matrices, which provide hyperpolarized solutions free of any-potentially toxic-additives (radicals and glass-forming agents). The hyperpolarized solutions can be expelled from the porous solids, filtered, and rapidly transferred either to a nuclear magnetic resonance (NMR) spectrometer or to a magnetic resonance imaging (MRI) system.
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Affiliation(s)
- Matthieu Cavaillès
- Institut de Chimie de Lyon, Laboratory C2P2 UMR 5265-CNRS, Université de Lyon 1-CPE Lyon, CPE Lyon, 43 Bd du 11 Novembre 1918, 69616, Villeurbanne, France
| | - Aurélien Bornet
- Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne, 1015, Lausanne, Switzerland
| | - Xavier Jaurand
- Université de Lyon, Université Claude Bernard Lyon 1, Centre Technologique des Microstructures (CTμ), 5 rue Raphael Dubois, 69622, Villeurbanne Cedex, France
| | - Basile Vuichoud
- Univ. Lyon, CNRS, Université Claude Bernard Lyon 1, ENS de Lyon, Institut des Sciences Analytiques, UMR 5280, 5 rue de la Doua, 69100, Villeurbanne, France
| | - David Baudouin
- Institut de Chimie de Lyon, Laboratory C2P2 UMR 5265-CNRS, Université de Lyon 1-CPE Lyon, CPE Lyon, 43 Bd du 11 Novembre 1918, 69616, Villeurbanne, France
| | - Mathieu Baudin
- Département de Chimie, Ecole Normale Supérieure, PSL Research University, UPMC Univ Paris 06, CNRS, Laboratoire des Biomolécules (LBM), 24 rue de Lhomond, 75005, Paris, France.,Sorbonne Universités, UPMC Univ Paris 06, Ecole Normale Supérieure, CNRS, Laboratoire des Biomolécules (LBM), Paris, France
| | - Laurent Veyre
- Institut de Chimie de Lyon, Laboratory C2P2 UMR 5265-CNRS, Université de Lyon 1-CPE Lyon, CPE Lyon, 43 Bd du 11 Novembre 1918, 69616, Villeurbanne, France
| | - Geoffrey Bodenhausen
- Département de Chimie, Ecole Normale Supérieure, PSL Research University, UPMC Univ Paris 06, CNRS, Laboratoire des Biomolécules (LBM), 24 rue de Lhomond, 75005, Paris, France.,Sorbonne Universités, UPMC Univ Paris 06, Ecole Normale Supérieure, CNRS, Laboratoire des Biomolécules (LBM), Paris, France
| | - Jean-Nicolas Dumez
- Institut de Chimie des Substances Naturelles, CNRS UPR2301, Univ. Paris Sud, Université Paris-Saclay, 91190, Gif-sur-Yvette, France
| | - Sami Jannin
- Univ. Lyon, CNRS, Université Claude Bernard Lyon 1, ENS de Lyon, Institut des Sciences Analytiques, UMR 5280, 5 rue de la Doua, 69100, Villeurbanne, France
| | - Christophe Copéret
- Dept. of Chemistry and Applied Biosciences, ETH Zürich, Vladimir-Prelog-Weg 1-5, 8093, Zürich, Switzerland
| | - Chloé Thieuleux
- Institut de Chimie de Lyon, Laboratory C2P2 UMR 5265-CNRS, Université de Lyon 1-CPE Lyon, CPE Lyon, 43 Bd du 11 Novembre 1918, 69616, Villeurbanne, France
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8
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Cavaillès M, Bornet A, Jaurand X, Vuichoud B, Baudouin D, Baudin M, Veyre L, Bodenhausen G, Dumez JN, Jannin S, Copéret C, Thieuleux C. Tailored Microstructured Hyperpolarizing Matrices for Optimal Magnetic Resonance Imaging. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201801009] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Matthieu Cavaillès
- Institut de Chimie de Lyon, Laboratory C2P2 UMR 5265-CNRS; Université de Lyon 1-CPE Lyon; CPE Lyon, 43 Bd du 11 Novembre 1918 69616 Villeurbanne France
| | - Aurélien Bornet
- Institut des Sciences et Ingénierie Chimiques; Ecole Polytechnique Fédérale de Lausanne; 1015 Lausanne Switzerland
| | - Xavier Jaurand
- Université de Lyon; Université Claude Bernard Lyon 1; Centre Technologique des Microstructures (CTμ); 5 rue Raphael Dubois 69622 Villeurbanne Cedex France
| | - Basile Vuichoud
- Univ. Lyon; CNRS, Université Claude Bernard Lyon 1; ENS de Lyon; Institut des Sciences Analytiques, UMR 5280; 5 rue de la Doua 69100 Villeurbanne France
| | - David Baudouin
- Institut de Chimie de Lyon, Laboratory C2P2 UMR 5265-CNRS; Université de Lyon 1-CPE Lyon; CPE Lyon, 43 Bd du 11 Novembre 1918 69616 Villeurbanne France
| | - Mathieu Baudin
- Département de Chimie; Ecole Normale Supérieure; PSL Research University; UPMC Univ Paris 06; CNRS; Laboratoire des Biomolécules (LBM); 24 rue de Lhomond 75005 Paris France
- Sorbonne Universités; UPMC Univ Paris 06; Ecole Normale Supérieure; CNRS; Laboratoire des Biomolécules (LBM); Paris France
| | - Laurent Veyre
- Institut de Chimie de Lyon, Laboratory C2P2 UMR 5265-CNRS; Université de Lyon 1-CPE Lyon; CPE Lyon, 43 Bd du 11 Novembre 1918 69616 Villeurbanne France
| | - Geoffrey Bodenhausen
- Département de Chimie; Ecole Normale Supérieure; PSL Research University; UPMC Univ Paris 06; CNRS; Laboratoire des Biomolécules (LBM); 24 rue de Lhomond 75005 Paris France
- Sorbonne Universités; UPMC Univ Paris 06; Ecole Normale Supérieure; CNRS; Laboratoire des Biomolécules (LBM); Paris France
| | - Jean-Nicolas Dumez
- Institut de Chimie des Substances Naturelles, CNRS UPR2301; Univ. Paris Sud, Université Paris-Saclay; 91190 Gif-sur-Yvette France
| | - Sami Jannin
- Univ. Lyon; CNRS, Université Claude Bernard Lyon 1; ENS de Lyon; Institut des Sciences Analytiques, UMR 5280; 5 rue de la Doua 69100 Villeurbanne France
| | - Christophe Copéret
- Dept. of Chemistry and Applied Biosciences; ETH Zürich; Vladimir-Prelog-Weg 1-5 8093 Zürich Switzerland
| | - Chloé Thieuleux
- Institut de Chimie de Lyon, Laboratory C2P2 UMR 5265-CNRS; Université de Lyon 1-CPE Lyon; CPE Lyon, 43 Bd du 11 Novembre 1918 69616 Villeurbanne France
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9
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Bornet A, Pinon A, Jhajharia A, Baudin M, Ji X, Emsley L, Bodenhausen G, Ardenkjaer-Larsen JH, Jannin S. Microwave-gated dynamic nuclear polarization. Phys Chem Chem Phys 2018; 18:30530-30535. [PMID: 27782260 DOI: 10.1039/c6cp05587g] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Dissolution dynamic nuclear polarization (D-DNP) has become a method of choice to enhance signals in nuclear magnetic resonance (NMR). Recently, we have proposed to combine cross-polarization (CP) with D-DNP to provide high polarization P(13C) in short build-up times. In this paper, we show that switching microwave irradiation off for a few hundreds of milliseconds prior to CP can significantly boost the efficiency. By implementing microwave gating, 13C polarizations on sodium [1-13C]acetate as high as 64% could be achieved with a polarization build-up time constant as short as 160 s. A polarization of P(13C) = 78% could even be reached for [13C]urea.
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Affiliation(s)
- Aurélien Bornet
- Ecole Polytechnique Fédérale de Lausanne, Institut des Sciences et Ingénierie Chimiques, 1015 Lausanne, Switzerland
| | - Arthur Pinon
- Ecole Polytechnique Fédérale de Lausanne, Institut des Sciences et Ingénierie Chimiques, 1015 Lausanne, Switzerland
| | - Aditya Jhajharia
- Département de Chimie, Ecole Normale Supérieure, PSL Research University, UPMC Univ Paris 06, CNRS, Laboratoire des Biomolécules (LBM), 24 rue Lhomond, 75005 Paris, France and Sorbonne Universités, UPMC Univ Paris 06, Ecole Normale Supérieure, CNRS, Laboratoire des Biomolécules (LBM), Paris, France
| | - Mathieu Baudin
- Ecole Polytechnique Fédérale de Lausanne, Institut des Sciences et Ingénierie Chimiques, 1015 Lausanne, Switzerland and Département de Chimie, Ecole Normale Supérieure, PSL Research University, UPMC Univ Paris 06, CNRS, Laboratoire des Biomolécules (LBM), 24 rue Lhomond, 75005 Paris, France and Sorbonne Universités, UPMC Univ Paris 06, Ecole Normale Supérieure, CNRS, Laboratoire des Biomolécules (LBM), Paris, France
| | - Xiao Ji
- Ecole Polytechnique Fédérale de Lausanne, Institut des Sciences et Ingénierie Chimiques, 1015 Lausanne, Switzerland and Département de Chimie, Ecole Normale Supérieure, PSL Research University, UPMC Univ Paris 06, CNRS, Laboratoire des Biomolécules (LBM), 24 rue Lhomond, 75005 Paris, France and Sorbonne Universités, UPMC Univ Paris 06, Ecole Normale Supérieure, CNRS, Laboratoire des Biomolécules (LBM), Paris, France
| | - Lyndon Emsley
- Ecole Polytechnique Fédérale de Lausanne, Institut des Sciences et Ingénierie Chimiques, 1015 Lausanne, Switzerland
| | - Geoffrey Bodenhausen
- Département de Chimie, Ecole Normale Supérieure, PSL Research University, UPMC Univ Paris 06, CNRS, Laboratoire des Biomolécules (LBM), 24 rue Lhomond, 75005 Paris, France and Sorbonne Universités, UPMC Univ Paris 06, Ecole Normale Supérieure, CNRS, Laboratoire des Biomolécules (LBM), Paris, France
| | - Jan Henrik Ardenkjaer-Larsen
- Department of Electrical Engineering, Technical University of Denmark, Lyngby 2800, Denmark and GE Healthcare, Brøndby 2605, Denmark
| | - Sami Jannin
- Ecole Polytechnique Fédérale de Lausanne, Institut des Sciences et Ingénierie Chimiques, 1015 Lausanne, Switzerland and Bruker BioSpin AG, Industriestrasse 26, 8117 Fällanden, Switzerland and Université de Lyon, Université Claude Bernard Lyon 1, CNRS, ENS de Lyon, Institut des Sciences Analytiques, UMR 5280, 5 rue de la Doua, 69100 Villeurbanne, France.
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10
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Ji X, Can TV, Mentink-Vigier F, Bornet A, Milani J, Vuichoud B, Caporini MA, Griffin RG, Jannin S, Goldman M, Bodenhausen G. Overhauser effects in non-conducting solids at 1.2 K. J Magn Reson 2018; 286:138-142. [PMID: 29241045 PMCID: PMC5767554 DOI: 10.1016/j.jmr.2017.11.017] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/05/2017] [Revised: 11/23/2017] [Accepted: 11/26/2017] [Indexed: 05/05/2023]
Abstract
Recently, it was observed that protons in non-conducting solids doped with 1,3-bisdiphenylene-2-phenylallyl (BDPA) or its sulfonated derivative (SA-BDPA) can be polarized through Overhauser effects via resonant microwave irradiation. These effects were present under magic angle spinning conditions in magnetic fields between 5 and 18.8 T and at temperatures near 100 K. This communication reports similar effects in static samples at 6.7 T and, more importantly, at temperatures as low as 1.2 K, in a different dynamic regime than in the previous study. Our results provide new information towards understanding the mechanism of the Overhauser effect in non-conducting solids. We discuss possible origins of the fluctuations that can give rise to an Overhauser effect at such low temperatures.
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Affiliation(s)
- X Ji
- Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne, 1015 Lausanne, Switzerland; Departement de Chimie, Ecole Normale Superieure, PSL Research University, UPMC Univ Paris 06, CNRS, Laboratoire des Biomolecules (LBM), 24 rue Lhomond, 75005 Paris, France; Sorbonne Universites, UPMC Univ Paris 06, Ecole Normale Superieure, CNRS, Laboratoire des Biomolecules (LBM), Paris, France
| | - T V Can
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, MA 02139, USA; Francis Bitter Magnet Laboratory, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - F Mentink-Vigier
- National High Magnetic Field Laboratory, Florida State University, Tallahassee, FL 32310, USA
| | - A Bornet
- Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne, 1015 Lausanne, Switzerland; Univ Lyon, CNRS, Université Claude Bernard Lyon 1, ENS de Lyon, Institut des Sciences Analytiques, UMR 5280, 5 rue de la Doua, 69100 Villeurbanne, France
| | - J Milani
- Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne, 1015 Lausanne, Switzerland; Univ Lyon, CNRS, Université Claude Bernard Lyon 1, ENS de Lyon, Institut des Sciences Analytiques, UMR 5280, 5 rue de la Doua, 69100 Villeurbanne, France
| | - B Vuichoud
- Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne, 1015 Lausanne, Switzerland; Univ Lyon, CNRS, Université Claude Bernard Lyon 1, ENS de Lyon, Institut des Sciences Analytiques, UMR 5280, 5 rue de la Doua, 69100 Villeurbanne, France
| | - M A Caporini
- Amgen Inc., 360 Binney Street Cambridge, MA 02142, USA
| | - R G Griffin
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, MA 02139, USA; Francis Bitter Magnet Laboratory, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.
| | - S Jannin
- Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne, 1015 Lausanne, Switzerland; Univ Lyon, CNRS, Université Claude Bernard Lyon 1, ENS de Lyon, Institut des Sciences Analytiques, UMR 5280, 5 rue de la Doua, 69100 Villeurbanne, France
| | - M Goldman
- 2 Allée Geneviève Anthonioz de Gaulle, 93260 Les Lilas, France
| | - G Bodenhausen
- Departement de Chimie, Ecole Normale Superieure, PSL Research University, UPMC Univ Paris 06, CNRS, Laboratoire des Biomolecules (LBM), 24 rue Lhomond, 75005 Paris, France; Sorbonne Universites, UPMC Univ Paris 06, Ecole Normale Superieure, CNRS, Laboratoire des Biomolecules (LBM), Paris, France.
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11
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Dumez JN, Vuichoud B, Mammoli D, Bornet A, Pinon AC, Stevanato G, Meier B, Bodenhausen G, Jannin S, Levitt MH. Dynamic Nuclear Polarization of Long-Lived Nuclear Spin States in Methyl Groups. J Phys Chem Lett 2017; 8:3549-3555. [PMID: 28708395 DOI: 10.1021/acs.jpclett.7b01512] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
We have induced hyperpolarized long-lived states in compounds containing 13C-bearing methyl groups by dynamic nuclear polarization (DNP) at cryogenic temperatures, followed by dissolution with a warm solvent. The hyperpolarized methyl long-lived states give rise to enhanced antiphase 13C NMR signals in solution, which often persist for times much longer than the 13C and 1H spin-lattice relaxation times under the same conditions. The DNP-induced effects are similar to quantum-rotor-induced polarization (QRIP) but are observed in a wider range of compounds because they do not depend critically on the height of the rotational barrier. We interpret our observations with a model in which nuclear Zeeman and methyl tunnelling reservoirs adopt an approximately uniform temperature, under DNP conditions. The generation of hyperpolarized NMR signals that persist for relatively long times in a range of methyl-bearing substances may be important for applications such as investigations of metabolism, enzymatic reactions, protein-ligand binding, drug screening, and molecular imaging.
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Affiliation(s)
- Jean-Nicolas Dumez
- Institut de Chimie des Substances Naturelles, CNRS UPR2301, Univ. Paris Sud, Université Paris-Saclay , 91190 Gif-sur-Yvette, France
| | - Basile Vuichoud
- Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL) , CH-1015 Lausanne, Switzerland
- Université de Lyon, CNRS, Université Claude Bernard Lyon 1, ENS de Lyon, Institut des Sciences Analytiques, UMR 5280, 69100 Villeurbanne, France
| | - Daniele Mammoli
- Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL) , CH-1015 Lausanne, Switzerland
| | - Aurélien Bornet
- Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL) , CH-1015 Lausanne, Switzerland
- Université de Lyon, CNRS, Université Claude Bernard Lyon 1, ENS de Lyon, Institut des Sciences Analytiques, UMR 5280, 69100 Villeurbanne, France
| | - Arthur C Pinon
- Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL) , CH-1015 Lausanne, Switzerland
| | - Gabriele Stevanato
- Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL) , CH-1015 Lausanne, Switzerland
| | - Benno Meier
- School of Chemistry, University of Southampton , Southampton SO17 1BJ, United Kingdom
| | | | - Sami Jannin
- Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL) , CH-1015 Lausanne, Switzerland
- Université de Lyon, CNRS, Université Claude Bernard Lyon 1, ENS de Lyon, Institut des Sciences Analytiques, UMR 5280, 69100 Villeurbanne, France
| | - Malcolm H Levitt
- School of Chemistry, University of Southampton , Southampton SO17 1BJ, United Kingdom
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12
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Silverio DL, van Kalkeren HA, Ong TC, Baudin M, Yulikov M, Veyre L, Berruyer P, Chaudhari S, Gajan D, Baudouin D, Cavaillès M, Vuichoud B, Bornet A, Jeschke G, Bodenhausen G, Lesage A, Emsley L, Jannin S, Thieuleux C, Copéret C. Tailored Polarizing Hybrid Solids with Nitroxide Radicals Localized in Mesostructured Silica Walls. Helv Chim Acta 2017. [DOI: 10.1002/hlca.201700101] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Daniel L. Silverio
- Department of Chemistry and Applied Biosciences; ETH Zürich; Vladimir-Prelog-Weg 1-5 CH-8093 Zürich
| | - Henri A. van Kalkeren
- Université de Lyon; Institut de Chimie de Lyon; LC2P2; UMR 5265 CNRS-CPE-Lyon-UCBL; CPE Lyon; 43 Bvd du 11 Novembre 1918 FR-69100 Villeurbanne
| | - Ta-Chung Ong
- Department of Chemistry and Applied Biosciences; ETH Zürich; Vladimir-Prelog-Weg 1-5 CH-8093 Zürich
| | - Mathieu Baudin
- Institut des Sciences et Ingénierie Chimiques; Ecole Polytechnique Fédérale de Lausanne (EPFL); CH-1015 Lausanne
- Laboratoire des Biomolécules (LBM); Département de Chimie, Ecole Normale Supérieure; UPMC Université Paris 06; CNRS; PSL Research University; 24 rue Lhomond FR-75005 Paris
- Laboratoire des Biomolécules (LBM); Sorbonne Universités; UPMC Université Paris 06; Ecole Normale Supérieure; CNRS; FR-75005 Paris
| | - Maxim Yulikov
- Department of Chemistry and Applied Biosciences; ETH Zürich; Vladimir-Prelog-Weg 1-5 CH-8093 Zürich
| | - Laurent Veyre
- Université de Lyon; Institut de Chimie de Lyon; LC2P2; UMR 5265 CNRS-CPE-Lyon-UCBL; CPE Lyon; 43 Bvd du 11 Novembre 1918 FR-69100 Villeurbanne
| | - Pierrick Berruyer
- Institut des Sciences Analytiques; CRMN CNRS-ENS Lyon-UCBL; Université de Lyon; FR-69100 Villeurbanne
| | - Sachin Chaudhari
- Institut des Sciences Analytiques; CRMN CNRS-ENS Lyon-UCBL; Université de Lyon; FR-69100 Villeurbanne
| | - David Gajan
- Institut des Sciences Analytiques; CRMN CNRS-ENS Lyon-UCBL; Université de Lyon; FR-69100 Villeurbanne
| | - David Baudouin
- Université de Lyon; Institut de Chimie de Lyon; LC2P2; UMR 5265 CNRS-CPE-Lyon-UCBL; CPE Lyon; 43 Bvd du 11 Novembre 1918 FR-69100 Villeurbanne
| | - Matthieu Cavaillès
- Université de Lyon; Institut de Chimie de Lyon; LC2P2; UMR 5265 CNRS-CPE-Lyon-UCBL; CPE Lyon; 43 Bvd du 11 Novembre 1918 FR-69100 Villeurbanne
| | - Basile Vuichoud
- Institut des Sciences et Ingénierie Chimiques; Ecole Polytechnique Fédérale de Lausanne (EPFL); CH-1015 Lausanne
| | - Aurélien Bornet
- Institut des Sciences et Ingénierie Chimiques; Ecole Polytechnique Fédérale de Lausanne (EPFL); CH-1015 Lausanne
| | - Gunnar Jeschke
- Department of Chemistry and Applied Biosciences; ETH Zürich; Vladimir-Prelog-Weg 1-5 CH-8093 Zürich
| | - Geoffrey Bodenhausen
- Institut des Sciences et Ingénierie Chimiques; Ecole Polytechnique Fédérale de Lausanne (EPFL); CH-1015 Lausanne
- Laboratoire des Biomolécules (LBM); Département de Chimie, Ecole Normale Supérieure; UPMC Université Paris 06; CNRS; PSL Research University; 24 rue Lhomond FR-75005 Paris
- Laboratoire des Biomolécules (LBM); Sorbonne Universités; UPMC Université Paris 06; Ecole Normale Supérieure; CNRS; FR-75005 Paris
| | - Anne Lesage
- Institut des Sciences Analytiques; CRMN CNRS-ENS Lyon-UCBL; Université de Lyon; FR-69100 Villeurbanne
| | - Lyndon Emsley
- Institut des Sciences et Ingénierie Chimiques; Ecole Polytechnique Fédérale de Lausanne (EPFL); CH-1015 Lausanne
| | - Sami Jannin
- Institut des Sciences et Ingénierie Chimiques; Ecole Polytechnique Fédérale de Lausanne (EPFL); CH-1015 Lausanne
- Institut des Sciences Analytiques; CRMN CNRS-ENS Lyon-UCBL; Université de Lyon; FR-69100 Villeurbanne
| | - Chloé Thieuleux
- Université de Lyon; Institut de Chimie de Lyon; LC2P2; UMR 5265 CNRS-CPE-Lyon-UCBL; CPE Lyon; 43 Bvd du 11 Novembre 1918 FR-69100 Villeurbanne
| | - Christophe Copéret
- Department of Chemistry and Applied Biosciences; ETH Zürich; Vladimir-Prelog-Weg 1-5 CH-8093 Zürich
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13
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Ji X, Bornet A, Vuichoud B, Milani J, Gajan D, Rossini AJ, Emsley L, Bodenhausen G, Jannin S. Transportable hyperpolarized metabolites. Nat Commun 2017; 8:13975. [PMID: 28072398 PMCID: PMC5234073 DOI: 10.1038/ncomms13975] [Citation(s) in RCA: 71] [Impact Index Per Article: 10.1] [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: 06/03/2016] [Accepted: 11/16/2016] [Indexed: 12/20/2022] Open
Abstract
Nuclear spin hyperpolarization of 13C-labelled metabolites by dissolution dynamic nuclear polarization can enhance the NMR signals of metabolites by several orders of magnitude, which has enabled in vivo metabolic imaging by MRI. However, because of the short lifetime of the hyperpolarized magnetization (typically <1 min), the polarization process must be carried out close to the point of use. Here we introduce a concept that markedly extends hyperpolarization lifetimes and enables the transportation of hyperpolarized metabolites. The hyperpolarized sample can thus be removed from the polarizer and stored or transported for use at remote MRI or NMR sites. We show that hyperpolarization in alanine and glycine survives 16 h storage and transport, maintaining overall polarization enhancements of up to three orders of magnitude.
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Affiliation(s)
- Xiao Ji
- Ecole Polytechnique Fédérale de Lausanne, Institut des Sciences et Ingénierie Chimiques, Lausanne 1015, Switzerland
| | - Aurélien Bornet
- Ecole Polytechnique Fédérale de Lausanne, Institut des Sciences et Ingénierie Chimiques, Lausanne 1015, Switzerland
| | - Basile Vuichoud
- Ecole Polytechnique Fédérale de Lausanne, Institut des Sciences et Ingénierie Chimiques, Lausanne 1015, Switzerland
| | - Jonas Milani
- Ecole Polytechnique Fédérale de Lausanne, Institut des Sciences et Ingénierie Chimiques, Lausanne 1015, Switzerland
| | - David Gajan
- Univ Lyon, CNRS, Université Claude Bernard Lyon 1, ENS de Lyon, Institut des Sciences Analytiques, UMR 5280, 5 rue de la Doua, 69100 Villeurbanne, France
| | - Aaron J Rossini
- Ecole Polytechnique Fédérale de Lausanne, Institut des Sciences et Ingénierie Chimiques, Lausanne 1015, Switzerland
| | - Lyndon Emsley
- Ecole Polytechnique Fédérale de Lausanne, Institut des Sciences et Ingénierie Chimiques, Lausanne 1015, Switzerland
| | - Geoffrey Bodenhausen
- Ecole Polytechnique Fédérale de Lausanne, Institut des Sciences et Ingénierie Chimiques, Lausanne 1015, Switzerland.,Département de Chimie, Ecole Normale Supérieure, PSL Research University, UPMC Univ Paris 06, CNRS, Laboratoire des Biomolécules (LBM), 24 Rue Lhomond, 75005 Paris, France.,Sorbonne Universités, UPMC Paris 06, Ecole Normale Supérieure, CNRS, Laboratoire des Biomolécules (LBM), Paris, France
| | - Sami Jannin
- Ecole Polytechnique Fédérale de Lausanne, Institut des Sciences et Ingénierie Chimiques, Lausanne 1015, Switzerland.,Univ Lyon, CNRS, Université Claude Bernard Lyon 1, ENS de Lyon, Institut des Sciences Analytiques, UMR 5280, 5 rue de la Doua, 69100 Villeurbanne, France
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14
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Milani J, Vuichoud B, Bornet A, Melzi R, Jannin S, Bodenhausen G. Hyperpolarization of nitrogen-15 nuclei by cross polarization and dissolution dynamic nuclear polarization. Rev Sci Instrum 2017; 88:015109. [PMID: 28147646 DOI: 10.1063/1.4973777] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Dynamic Nuclear Polarization (DNP) is often achieved by the direct transfer of polarization from electrons to nuclei such as 13C, induced by microwave saturation of the wings of narrow EPR lines of radicals like trityl. In the indirect approach on the other hand, DNP is used to transfer the polarization from the electrons of radicals such as nitroxides that have broad EPR lines to nuclear spins I = 1H, followed by cross-polarization (CP) from I = 1H to S = 13C or other nuclei with low gyromagnetic ratios. This approach is particularly attractive for S = 15N, since direct DNP yields modest polarizations P(15N) < 4% with build-up times that can be as long as τDNP(15N) > 2 h. In this paper, we show that CP from 1H to 15N at 1.2 K can yield P(15N) = 25% with τCP-DNP(15N) = 10-15 min. After rapid dissolution and transfer to a solution-state NMR spectrometer, a polarization P(15N) = 20% was observed at 300 K. The longitudinal relaxation times in solution can be as long as T1(15N) > 800 s in favorable cases.
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Affiliation(s)
- Jonas Milani
- Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL), Batochime, CH-1015 Lausanne, Switzerland
| | - Basile Vuichoud
- Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL), Batochime, CH-1015 Lausanne, Switzerland
| | - Aurélien Bornet
- Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL), Batochime, CH-1015 Lausanne, Switzerland
| | - Roberto Melzi
- Bruker Italia S.r.l., Viale V. Lancetti 43, 20158 Milano, Italy
| | - Sami Jannin
- Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL), Batochime, CH-1015 Lausanne, Switzerland
| | - Geoffrey Bodenhausen
- Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL), Batochime, CH-1015 Lausanne, Switzerland
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15
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Grüning WR, Bieringer H, Schwarzwälder M, Gajan D, Bornet A, Vuichoud B, Milani J, Baudouin D, Veyre L, Lesage A, Jannin S, Bodenhausen G, Thieuleux C, Copéret C. Phenylazide Hybrid-Silica - Polarization Platform for Dynamic Nuclear Polarization at Cryogenic Temperatures. Helv Chim Acta 2016. [DOI: 10.1002/hlca.201600122] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Wolfram R. Grüning
- Department of Chemistry and Applied Biosciences; ETH Zürich; Vladimir-Prelog-Weg 1-5/10 CH-8093 Zürich Switzerland
| | - Harald Bieringer
- Department of Chemistry and Applied Biosciences; ETH Zürich; Vladimir-Prelog-Weg 1-5/10 CH-8093 Zürich Switzerland
| | - Martin Schwarzwälder
- Department of Chemistry and Applied Biosciences; ETH Zürich; Vladimir-Prelog-Weg 1-5/10 CH-8093 Zürich Switzerland
| | - David Gajan
- Centre de Résonance Magnétique Nucléaire (RMN) à Très Hauts Champs; Institut des Sciences Analytiques [Centre National de la Recherche Scientifique (CNRS)/Ecole Normale Supérieure (ENS) Lyon/Université Claude Bernard Lyon 1 (UCBL)]; Université de Lyon; FR-69100 Villeurbanne France
| | - Aurélien Bornet
- Institut des Sciences et Ingénierie Chimiques; Ecole Polytechnique Fédérale de Lausanne (EPFL); CH-1015 Lausanne Switzerland
| | - Basile Vuichoud
- Institut des Sciences et Ingénierie Chimiques; Ecole Polytechnique Fédérale de Lausanne (EPFL); CH-1015 Lausanne Switzerland
| | - Jonas Milani
- Institut des Sciences et Ingénierie Chimiques; Ecole Polytechnique Fédérale de Lausanne (EPFL); CH-1015 Lausanne Switzerland
| | - David Baudouin
- Laboratoire de Chimie, Catalyse, Polymères et Procédés (LC2P2); Unité Mixte de Recherche (UMR) 5265; Institut de Chimie de Lyon; CNRS-CPE Lyon-UCBL; CPE Lyon, Université de Lyon; FR-69100 Villeurbanne France
| | - Laurent Veyre
- Laboratoire de Chimie, Catalyse, Polymères et Procédés (LC2P2); Unité Mixte de Recherche (UMR) 5265; Institut de Chimie de Lyon; CNRS-CPE Lyon-UCBL; CPE Lyon, Université de Lyon; FR-69100 Villeurbanne France
| | - Anne Lesage
- Centre de Résonance Magnétique Nucléaire (RMN) à Très Hauts Champs; Institut des Sciences Analytiques [Centre National de la Recherche Scientifique (CNRS)/Ecole Normale Supérieure (ENS) Lyon/Université Claude Bernard Lyon 1 (UCBL)]; Université de Lyon; FR-69100 Villeurbanne France
| | - Sami Jannin
- Institut des Sciences et Ingénierie Chimiques; Ecole Polytechnique Fédérale de Lausanne (EPFL); CH-1015 Lausanne Switzerland
| | - Geoffrey Bodenhausen
- Institut des Sciences et Ingénierie Chimiques; Ecole Polytechnique Fédérale de Lausanne (EPFL); CH-1015 Lausanne Switzerland
- Département de Chimie; Ecole Normale Supérieure (ENS)-Paris Sciences et Lettres (PSL) Research University; FR-75005 Paris France
- Laboratoire de Biomolécules (LBM); Université Pierre et Marie Curie (UPMC), Université Paris 06; Sorbonnes Universités; FR-75005 Paris France
- Laboratoire de Biomolécules (LBM); Unité Mixte de Recherche (UMR) 7203; Centre National de la Recherche Scientifique (CNRS); FR-75005 Paris France
| | - Chloé Thieuleux
- Laboratoire de Chimie, Catalyse, Polymères et Procédés (LC2P2); Unité Mixte de Recherche (UMR) 5265; Institut de Chimie de Lyon; CNRS-CPE Lyon-UCBL; CPE Lyon, Université de Lyon; FR-69100 Villeurbanne France
| | - Christophe Copéret
- Department of Chemistry and Applied Biosciences; ETH Zürich; Vladimir-Prelog-Weg 1-5/10 CH-8093 Zürich Switzerland
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16
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Vuichoud B, Bornet A, de Nanteuil F, Milani J, Canet E, Ji X, Miéville P, Weber E, Kurzbach D, Flamm A, Konrat R, Gossert AD, Jannin S, Bodenhausen G. Filterable Agents for Hyperpolarization of Water, Metabolites, and Proteins. Chemistry 2016; 22:14696-700. [DOI: 10.1002/chem.201602506] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2016] [Indexed: 11/07/2022]
Affiliation(s)
- Basile Vuichoud
- Institut des Sciences et Ingénierie Chimiques; Ecole Polytechnique Fédérale de Lausanne; 1015 Lausanne Switzerland
| | - Aurélien Bornet
- Institut des Sciences et Ingénierie Chimiques; Ecole Polytechnique Fédérale de Lausanne; 1015 Lausanne Switzerland
| | - Florian de Nanteuil
- Institut des Sciences et Ingénierie Chimiques; Ecole Polytechnique Fédérale de Lausanne; 1015 Lausanne Switzerland
| | - Jonas Milani
- Institut des Sciences et Ingénierie Chimiques; Ecole Polytechnique Fédérale de Lausanne; 1015 Lausanne Switzerland
| | - Estel Canet
- Institut des Sciences et Ingénierie Chimiques; Ecole Polytechnique Fédérale de Lausanne; 1015 Lausanne Switzerland
- Département de Chimie; Ecole Normale Supérieure-PSL Research University; 24 rue Lhomond 75005 Paris France
- Sorbonne Universités; UPMC Univ Paris 06; Ecole Normale Supérieure, CNRS LBM; 75005 Paris France
| | - Xiao Ji
- Institut des Sciences et Ingénierie Chimiques; Ecole Polytechnique Fédérale de Lausanne; 1015 Lausanne Switzerland
- Département de Chimie; Ecole Normale Supérieure-PSL Research University; 24 rue Lhomond 75005 Paris France
- Sorbonne Universités; UPMC Univ Paris 06; Ecole Normale Supérieure, CNRS LBM; 75005 Paris France
| | - Pascal Miéville
- Institut des Sciences et Ingénierie Chimiques; Ecole Polytechnique Fédérale de Lausanne; 1015 Lausanne Switzerland
| | - Emmanuelle Weber
- Département de Chimie; Ecole Normale Supérieure-PSL Research University; 24 rue Lhomond 75005 Paris France
| | - Dennis Kurzbach
- Département de Chimie; Ecole Normale Supérieure-PSL Research University; 24 rue Lhomond 75005 Paris France
| | - Andrea Flamm
- Institute of Biomolecular Structural Chemistry; University of Vienna; 1030 Vienna Austria
| | - Robert Konrat
- Institute of Biomolecular Structural Chemistry; University of Vienna; 1030 Vienna Austria
| | - Alvar D. Gossert
- Institutes for BioMedical Research; Novartis; 4002 Basel Switzerland
| | - Sami Jannin
- Institut des Sciences et Ingénierie Chimiques; Ecole Polytechnique Fédérale de Lausanne; 1015 Lausanne Switzerland
| | - Geoffrey Bodenhausen
- Institut des Sciences et Ingénierie Chimiques; Ecole Polytechnique Fédérale de Lausanne; 1015 Lausanne Switzerland
- Département de Chimie; Ecole Normale Supérieure-PSL Research University; 24 rue Lhomond 75005 Paris France
- Sorbonne Universités; UPMC Univ Paris 06; Ecole Normale Supérieure, CNRS LBM; 75005 Paris France
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17
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Vuichoud B, Canet E, Milani J, Bornet A, Baudouin D, Veyre L, Gajan D, Emsley L, Lesage A, Copéret C, Thieuleux C, Bodenhausen G, Koptyug I, Jannin S. Hyperpolarization of Frozen Hydrocarbon Gases by Dynamic Nuclear Polarization at 1.2 K. J Phys Chem Lett 2016; 7:3235-9. [PMID: 27483034 DOI: 10.1021/acs.jpclett.6b01345] [Citation(s) in RCA: 13] [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: 05/22/2023]
Abstract
We report a simple and general method for the hyperpolarization of condensed gases by dynamic nuclear polarization (DNP). The gases are adsorbed in the pores of structured mesoporous silica matrices known as HYPSOs (HYper Polarizing SOlids) that have paramagnetic polarizing agents covalently bound to the surface of the mesopores. DNP is performed at low temperatures and moderate magnetic fields (T = 1.2 K and B0 = 6.7 T). Frequency-modulated microwave irradiation is applied close to the electron spin resonance frequency (f = 188.3 GHz), and the electron spin polarization of the polarizing agents of HYPSO is transferred to the nuclear spins of the frozen gas. A proton polarization as high as P((1)H) = 70% can be obtained, which can be subsequently transferred to (13)C in natural abundance by cross-polarization, yielding up to P((13)C) = 27% for ethylene.
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Affiliation(s)
- Basile Vuichoud
- Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL) , Batochime, CH-1015 Lausanne, Switzerland
| | - Estel Canet
- Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL) , Batochime, CH-1015 Lausanne, Switzerland
- Département de Chimie, Ecole Normale Supérieure, PSL Research University, UPMC Univ Paris 06, CNRS, Laboratoire des Biomolécules (LBM) , 24 rue Lhomond, 75005 Paris, France
- Sorbonnes Universités , UPMC Univ Paris 06, Ecole Normale Supérieure, CNRS, Laboratoires des Biomolécules (LBM), 75005 Paris, France
| | - Jonas Milani
- Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL) , Batochime, CH-1015 Lausanne, Switzerland
| | - Aurélien Bornet
- Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL) , Batochime, CH-1015 Lausanne, Switzerland
| | - David Baudouin
- Université de Lyon , Institut de Chimie de Lyon, LC2P2, UMR 5265 CNRS-CPE Lyon-UCBL, CPE Lyon, 43 Bvd du 11 Novembre 1918, 69100 Villeurbanne, France
| | - Laurent Veyre
- Université de Lyon , Institut de Chimie de Lyon, LC2P2, UMR 5265 CNRS-CPE Lyon-UCBL, CPE Lyon, 43 Bvd du 11 Novembre 1918, 69100 Villeurbanne, France
| | - David Gajan
- Université de Lyon , Institut des Sciences Analytiques, UMR 5280, CNRS, Université Lyon 1, ENS Lyon-5, rue de la Doua, 69100 Villeurbanne, France
| | - Lyndon Emsley
- Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL) , Batochime, CH-1015 Lausanne, Switzerland
| | - Anne Lesage
- Université de Lyon , Institut des Sciences Analytiques, UMR 5280, CNRS, Université Lyon 1, ENS Lyon-5, rue de la Doua, 69100 Villeurbanne, France
| | - Christophe Copéret
- ETH Zürich , Department of Chemistry and Applied Biosciences, Vladimir-Prelog-Weg 1-5/10, 8093 Zürich, Switzerland
| | - Chloé Thieuleux
- Université de Lyon , Institut de Chimie de Lyon, LC2P2, UMR 5265 CNRS-CPE Lyon-UCBL, CPE Lyon, 43 Bvd du 11 Novembre 1918, 69100 Villeurbanne, France
| | - Geoffrey Bodenhausen
- Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL) , Batochime, CH-1015 Lausanne, Switzerland
- Département de Chimie, Ecole Normale Supérieure, PSL Research University, UPMC Univ Paris 06, CNRS, Laboratoire des Biomolécules (LBM) , 24 rue Lhomond, 75005 Paris, France
- Sorbonnes Universités , UPMC Univ Paris 06, Ecole Normale Supérieure, CNRS, Laboratoires des Biomolécules (LBM), 75005 Paris, France
| | - Igor Koptyug
- Département de Chimie, Ecole Normale Supérieure, PSL Research University, UPMC Univ Paris 06, CNRS, Laboratoire des Biomolécules (LBM) , 24 rue Lhomond, 75005 Paris, France
- Sorbonnes Universités , UPMC Univ Paris 06, Ecole Normale Supérieure, CNRS, Laboratoires des Biomolécules (LBM), 75005 Paris, France
- International Tomography Center , SB RAS, 3A Institutskaya St., Novosibirsk, 630090, Russia
- Novosibirsk State University , Pirogova St. 2, Novosibirsk, 630090, Russia
| | - Sami Jannin
- Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL) , Batochime, CH-1015 Lausanne, Switzerland
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18
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Baudouin D, van Kalkeren HA, Bornet A, Vuichoud B, Veyre L, Cavaillès M, Schwarzwälder M, Liao WC, Gajan D, Bodenhausen G, Emsley L, Lesage A, Jannin S, Copéret C, Thieuleux C. Cubic three-dimensional hybrid silica solids for nuclear hyperpolarization. Chem Sci 2016; 7:6846-6850. [PMID: 28451127 PMCID: PMC5356032 DOI: 10.1039/c6sc02055k] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2016] [Accepted: 07/15/2016] [Indexed: 11/21/2022] Open
Abstract
Porous network architecture of hybrid silicas containing TEMPO radicals along their pores is key for increased hyperpolarization performances.
Hyperpolarization of metabolites by dissolution dynamic nuclear polarization (D-DNP) for MRI applications often requires fast and efficient removal of the radicals (polarizing agents). Ordered mesoporous SBA-15 silica materials containing homogeneously dispersed radicals, referred to as HYperPolarizing SOlids (HYPSOs), enable high polarization – P(1H) = 50% at 1.2 K – and straightforward separation of the polarizing HYPSO material from the hyperpolarized solution by filtration. However, the one-dimensional tubular pores of SBA-15 type materials are not ideal for nuclear spin diffusion, which may limit efficient polarization. Here, we develop a generation of hyperpolarizing solids based on a SBA-16 structure with a network of pores interconnected in three dimensions, which allows a significant increase of polarization, i.e. P(1H) = 63% at 1.2 K. This result illustrates how one can improve materials by combining a control of the incorporation of radicals with a better design of the porous network structures.
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Affiliation(s)
- D Baudouin
- Université de Lyon , Institut de Chimie de Lyon , LC2P2 , UMR 5265 CNRS-CPE Lyon-UCBL , CPE Lyon , 43 Bvd du 11 Novembre 1918 , 69100 Villeurbanne , France . ;
| | - H A van Kalkeren
- Université de Lyon , Institut de Chimie de Lyon , LC2P2 , UMR 5265 CNRS-CPE Lyon-UCBL , CPE Lyon , 43 Bvd du 11 Novembre 1918 , 69100 Villeurbanne , France . ;
| | - A Bornet
- Institut des Sciences et Ingénierie Chimiques , Ecole Polytechnique Fédérale de Lausanne (EPFL) , CH-1015 Lausanne , Switzerland
| | - B Vuichoud
- Institut des Sciences et Ingénierie Chimiques , Ecole Polytechnique Fédérale de Lausanne (EPFL) , CH-1015 Lausanne , Switzerland
| | - L Veyre
- Université de Lyon , Institut de Chimie de Lyon , LC2P2 , UMR 5265 CNRS-CPE Lyon-UCBL , CPE Lyon , 43 Bvd du 11 Novembre 1918 , 69100 Villeurbanne , France . ;
| | - M Cavaillès
- Université de Lyon , Institut de Chimie de Lyon , LC2P2 , UMR 5265 CNRS-CPE Lyon-UCBL , CPE Lyon , 43 Bvd du 11 Novembre 1918 , 69100 Villeurbanne , France . ;
| | - M Schwarzwälder
- ETH Zürich , Department of Chemistry and Applied Biosciences , Vladimir-Prelog-Weg 1-5/10 , 8093 Zürich , Switzerland .
| | - W-C Liao
- ETH Zürich , Department of Chemistry and Applied Biosciences , Vladimir-Prelog-Weg 1-5/10 , 8093 Zürich , Switzerland .
| | - D Gajan
- Université de Lyon , Institut des Sciences Analytiques , UMR 5280 , CNRS , Université Lyon 1 , ENS Lyon 5 rue de la Doua , F-69100 Villeurbanne , France
| | - G Bodenhausen
- Institut des Sciences et Ingénierie Chimiques , Ecole Polytechnique Fédérale de Lausanne (EPFL) , CH-1015 Lausanne , Switzerland.,Département de Chimie , Ecole Normale Supérieure, 24 Rue Lhomond , 75231 Paris Cedex 05 , France.,Université Pierre-et-Marie Curie , Paris , France.,UMR 7203 , CNRS/UPMC/ENS , Paris , France
| | - L Emsley
- Institut des Sciences et Ingénierie Chimiques , Ecole Polytechnique Fédérale de Lausanne (EPFL) , CH-1015 Lausanne , Switzerland
| | - A Lesage
- Université de Lyon , Institut des Sciences Analytiques , UMR 5280 , CNRS , Université Lyon 1 , ENS Lyon 5 rue de la Doua , F-69100 Villeurbanne , France
| | - S Jannin
- Institut des Sciences et Ingénierie Chimiques , Ecole Polytechnique Fédérale de Lausanne (EPFL) , CH-1015 Lausanne , Switzerland
| | - C Copéret
- ETH Zürich , Department of Chemistry and Applied Biosciences , Vladimir-Prelog-Weg 1-5/10 , 8093 Zürich , Switzerland .
| | - C Thieuleux
- Université de Lyon , Institut de Chimie de Lyon , LC2P2 , UMR 5265 CNRS-CPE Lyon-UCBL , CPE Lyon , 43 Bvd du 11 Novembre 1918 , 69100 Villeurbanne , France . ;
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19
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Mammoli D, Salvi N, Milani J, Buratto R, Bornet A, Sehgal AA, Canet E, Pelupessy P, Carnevale D, Jannin S, Bodenhausen G. Challenges in preparing, preserving and detecting para-water in bulk: overcoming proton exchange and other hurdles. Phys Chem Chem Phys 2016; 17:26819-27. [PMID: 26399171 DOI: 10.1039/c5cp03350k] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Para-water is an analogue of para-hydrogen, where the two proton spins are in a quantum state that is antisymmetric under permutation, also known as singlet state. The populations of the nuclear spin states in para-water are believed to have long lifetimes just like other Long-Lived States (LLSs). This hypothesis can be verified by measuring the relaxation of an excess or a deficiency of para-water, also known as a "Triplet-Singlet Imbalance" (TSI), i.e., a difference between the average population of the three triplet states T (that are symmetric under permutation) and the population of the singlet state S. In analogy with our recent findings on ethanol and fumarate, we propose to adapt the procedure for Dissolution Dynamic Nuclear Polarization (D-DNP) to prepare such a TSI in frozen water at very low temperatures in the vicinity of 1.2 K. After rapid heating and dissolution using an aprotic solvent, the TSI should be largely preserved. To assess this hypothesis, we studied the lifetime of water as a molecular entity when diluted in various solvents. In neat liquid H2O, proton exchange rates have been characterized by spin-echo experiments on oxygen-17 in natural abundance, with and without proton decoupling. One-dimensional exchange spectroscopy (EXSY) has been used to study proton exchange rates in H2O, HDO and D2O mixtures diluted in various aprotic solvents. In the case of 50 mM H2O in dioxane-d8, the proton exchange lifetime is about 20 s. After dissolving, one can observe this TSI by monitoring intensities in oxygen-17 spectra of H2O (if necessary using isotopically enriched samples) where the AX2 system comprising a "spy" oxygen A and two protons X2 gives rise to binomial multiplets only if the TSI vanishes. Alternatively, fast chemical addition to a suitable substrate (such as an activated aldehyde or ketone) can provide AX2 systems where a carbon-13 acts as a spy nucleus. Proton signals that relax to equilibrium with two distinct time constants can be considered as a hallmark of a TSI. We optimized several experimental procedures designed to preserve and reveal dilute para-water in bulk.
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Affiliation(s)
- Daniele Mammoli
- Institut des Sciences et Ingéniérie Chimiques, Ecole Polytechnique Fédérale de Lausanne, 1015 Lausanne, Switzerland.
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20
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Bornet A, Maucourt M, Deborde C, Jacob D, Milani J, Vuichoud B, Ji X, Dumez JN, Moing A, Bodenhausen G, Jannin S, Giraudeau P. Highly Repeatable Dissolution Dynamic Nuclear Polarization for Heteronuclear NMR Metabolomics. Anal Chem 2016. [PMID: 27253320 DOI: 10.1021/acs.anal-chem.6b01094] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/15/2023]
Abstract
At natural (13)C abundance, metabolomics based on heteronuclear NMR is limited by sensitivity. We have recently demonstrated how hyperpolarization by dissolution dynamic nuclear polarization (D-DNP) assisted by cross-polarization (CP) provides a reliable way of enhancing the sensitivity of heteronuclear NMR in dilute mixtures of metabolites. In this Technical Note, we evaluate the precision of this experimental approach, a critical point for applications to metabolomics. The higher the repeatability, the greater the likelihood that one can detect small biologically relevant differences between samples. The average repeatability of our state-of-the-art D-DNP NMR equipment for samples of metabolomic relevance (20 mg dry weight tomato extracts) is 3.6% for signals above the limit of quantification (LOQ) and 6.4% when all the signals above the limit of detection (LOD) are taken into account. This first report on the repeatability of D-DNP highlights the compatibility of the technique with the requirements of metabolomics and confirms its potential as an analytical tool for such applications.
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Affiliation(s)
- Aurélien Bornet
- Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL) , 1015 Lausanne, Switzerland
| | - Mickaël Maucourt
- Plateforme Métabolome Bordeaux-MetaboHUB, Centre de Génomique Fonctionnelle Bordeaux, IBVM, Centre INRA Bordeaux, 33140 Villenave d'Ornon, France
- Université de Bordeaux , UMR 1332 Biologie du Fruit et Pathologie, Centre INRA Bordeaux, 33140 Villenave d'Ornon, France
| | - Catherine Deborde
- Plateforme Métabolome Bordeaux-MetaboHUB, Centre de Génomique Fonctionnelle Bordeaux, IBVM, Centre INRA Bordeaux, 33140 Villenave d'Ornon, France
- INRA, UMR 1332 Biologie du Fruit et Pathologie, Centre INRA Bordeaux, 33140 Villenave d'Ornon, France
| | - Daniel Jacob
- Plateforme Métabolome Bordeaux-MetaboHUB, Centre de Génomique Fonctionnelle Bordeaux, IBVM, Centre INRA Bordeaux, 33140 Villenave d'Ornon, France
- INRA, UMR 1332 Biologie du Fruit et Pathologie, Centre INRA Bordeaux, 33140 Villenave d'Ornon, France
| | - Jonas Milani
- Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL) , 1015 Lausanne, Switzerland
| | - Basile Vuichoud
- Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL) , 1015 Lausanne, Switzerland
| | - Xiao Ji
- Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL) , 1015 Lausanne, Switzerland
| | - Jean-Nicolas Dumez
- Institut de Chimie des Substances Naturelles, CNRS UPR 2301, Univ. Paris-Sud, Université Paris-Saclay , 91190 Gif-sur-Yvette, France
| | - Annick Moing
- Plateforme Métabolome Bordeaux-MetaboHUB, Centre de Génomique Fonctionnelle Bordeaux, IBVM, Centre INRA Bordeaux, 33140 Villenave d'Ornon, France
- INRA, UMR 1332 Biologie du Fruit et Pathologie, Centre INRA Bordeaux, 33140 Villenave d'Ornon, France
| | - Geoffrey Bodenhausen
- Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL) , 1015 Lausanne, Switzerland
- Département de Chimie, Ecole Normale Supérieure (ENS)-Paris Sciences Lettres (PSL) Research University , 75005 Paris, France
- Laboratoire de Biomolécules (LBM), Université Pierre et Marie Curie (UPMC) - Paris 06, Sorbonne Universités , 75005 Paris, France
- Laboratoire de Biomolécules (LBM), Unité Mixte de Recherche (UMR) 7203 Centre National de la Recherche Scientifique (CNRS), 75005 Paris, France
| | - Sami Jannin
- Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL) , 1015 Lausanne, Switzerland
| | - Patrick Giraudeau
- Université de Nantes , CNRS, CEISAM UMR 6230, 44322 Nantes Cedex 03, France
- Institut Universitaire de France , 75005 Paris, France
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21
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Bornet A, Maucourt M, Deborde C, Jacob D, Milani J, Vuichoud B, Ji X, Dumez JN, Moing A, Bodenhausen G, Jannin S, Giraudeau P. Highly Repeatable Dissolution Dynamic Nuclear Polarization for Heteronuclear NMR Metabolomics. Anal Chem 2016; 88:6179-83. [PMID: 27253320 DOI: 10.1021/acs.analchem.6b01094] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
At natural (13)C abundance, metabolomics based on heteronuclear NMR is limited by sensitivity. We have recently demonstrated how hyperpolarization by dissolution dynamic nuclear polarization (D-DNP) assisted by cross-polarization (CP) provides a reliable way of enhancing the sensitivity of heteronuclear NMR in dilute mixtures of metabolites. In this Technical Note, we evaluate the precision of this experimental approach, a critical point for applications to metabolomics. The higher the repeatability, the greater the likelihood that one can detect small biologically relevant differences between samples. The average repeatability of our state-of-the-art D-DNP NMR equipment for samples of metabolomic relevance (20 mg dry weight tomato extracts) is 3.6% for signals above the limit of quantification (LOQ) and 6.4% when all the signals above the limit of detection (LOD) are taken into account. This first report on the repeatability of D-DNP highlights the compatibility of the technique with the requirements of metabolomics and confirms its potential as an analytical tool for such applications.
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Affiliation(s)
- Aurélien Bornet
- Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL) , 1015 Lausanne, Switzerland
| | - Mickaël Maucourt
- Plateforme Métabolome Bordeaux-MetaboHUB, Centre de Génomique Fonctionnelle Bordeaux, IBVM, Centre INRA Bordeaux, 33140 Villenave d'Ornon, France.,Université de Bordeaux , UMR 1332 Biologie du Fruit et Pathologie, Centre INRA Bordeaux, 33140 Villenave d'Ornon, France
| | - Catherine Deborde
- Plateforme Métabolome Bordeaux-MetaboHUB, Centre de Génomique Fonctionnelle Bordeaux, IBVM, Centre INRA Bordeaux, 33140 Villenave d'Ornon, France.,INRA, UMR 1332 Biologie du Fruit et Pathologie, Centre INRA Bordeaux, 33140 Villenave d'Ornon, France
| | - Daniel Jacob
- Plateforme Métabolome Bordeaux-MetaboHUB, Centre de Génomique Fonctionnelle Bordeaux, IBVM, Centre INRA Bordeaux, 33140 Villenave d'Ornon, France.,INRA, UMR 1332 Biologie du Fruit et Pathologie, Centre INRA Bordeaux, 33140 Villenave d'Ornon, France
| | - Jonas Milani
- Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL) , 1015 Lausanne, Switzerland
| | - Basile Vuichoud
- Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL) , 1015 Lausanne, Switzerland
| | - Xiao Ji
- Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL) , 1015 Lausanne, Switzerland
| | - Jean-Nicolas Dumez
- Institut de Chimie des Substances Naturelles, CNRS UPR 2301, Univ. Paris-Sud, Université Paris-Saclay , 91190 Gif-sur-Yvette, France
| | - Annick Moing
- Plateforme Métabolome Bordeaux-MetaboHUB, Centre de Génomique Fonctionnelle Bordeaux, IBVM, Centre INRA Bordeaux, 33140 Villenave d'Ornon, France.,INRA, UMR 1332 Biologie du Fruit et Pathologie, Centre INRA Bordeaux, 33140 Villenave d'Ornon, France
| | - Geoffrey Bodenhausen
- Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL) , 1015 Lausanne, Switzerland.,Département de Chimie, Ecole Normale Supérieure (ENS)-Paris Sciences Lettres (PSL) Research University , 75005 Paris, France.,Laboratoire de Biomolécules (LBM), Université Pierre et Marie Curie (UPMC) - Paris 06, Sorbonne Universités , 75005 Paris, France.,Laboratoire de Biomolécules (LBM), Unité Mixte de Recherche (UMR) 7203 Centre National de la Recherche Scientifique (CNRS), 75005 Paris, France
| | - Sami Jannin
- Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL) , 1015 Lausanne, Switzerland
| | - Patrick Giraudeau
- Université de Nantes , CNRS, CEISAM UMR 6230, 44322 Nantes Cedex 03, France.,Institut Universitaire de France , 75005 Paris, France
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Chinthalapalli S, Bornet A, Carnevale D, Jannin S, Bodenhausen G. Homonuclear decoupling for spectral simplification of carbon-13 enriched molecules in solution-state NMR enhanced by dissolution DNP. Phys Chem Chem Phys 2016; 18:11480-7. [PMID: 27058951 DOI: 10.1039/c5cp07884a] [Citation(s) in RCA: 6] [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: 02/03/2023]
Abstract
Complex overlapping multiplets due to scalar couplings (n)J((13)C, (13)C) in fully (13)C-enriched molecules can be simplified by polychromatic irradiation of selected spins. The signal intensities of the remaining non-irradiated signals are proportional to the concentrations, as shown in this work for the anomeric (13)C signals of the α- and β-conformers of glucose. Homonuclear decoupling can therefore be useful for quantitative NMR studies. The resulting decoupled lineshapes show residual fine structures that have been investigated by means of numerical simulations. Simulations also show that homonuclear decoupling schemes remain effective despite inhomogeneous static fields that tend to hamper in cellulo and in vivo studies. Homonuclear decoupling schemes can be combined with dissolution DNP to obtain signal enhancements of more than four orders of magnitude. Polychromatic irradiation of selected spins does not cause significant losses of hyperpolarization of the remaining non-irradiated spins.
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Affiliation(s)
- Srinivas Chinthalapalli
- Institut des sciences et ingénierie chimiques (ISIC), Ecole Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland and Department of Chemistry, School of Chemical Sciences, Central University of Karnataka, Gulbarga, 585311 Karnataka, India
| | - Aurélien Bornet
- Institut des sciences et ingénierie chimiques (ISIC), Ecole Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland
| | - Diego Carnevale
- Institut des sciences et ingénierie chimiques (ISIC), Ecole Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland and Neuchâtel Platform of Analytical Chemistry (NPAC), Institut de Chimie, Université de Neuchâtel, Avenue de Bellevaux 51, 2000 Neuchâtel, Switzerland.
| | - Sami Jannin
- Institut des sciences et ingénierie chimiques (ISIC), Ecole Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland
| | - Geoffrey Bodenhausen
- Institut des sciences et ingénierie chimiques (ISIC), Ecole Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland and École Normale Supérieure-PSL Research University, Département de Chimie, 24 rue Lhomond, F-75005 Paris, France and Sorbonne Universités, UPMC Univ Paris 06, LBM, 4 place Jussieu, F-75005, Paris, France and CNRS, UMR 7203 LBM, F-75005, Paris, France
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23
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Bornet A, Jannin S. Optimizing dissolution dynamic nuclear polarization. J Magn Reson 2016; 264:13-21. [PMID: 26920826 DOI: 10.1016/j.jmr.2015.12.007] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/23/2015] [Revised: 12/01/2015] [Accepted: 12/14/2015] [Indexed: 05/15/2023]
Abstract
This article is a short review of some of our recent developments in dissolution dynamic nuclear polarization (d-DNP). We present the basic principles of d-DNP, and motivate our choice to step away from conventional approaches. We then introduce a modified d-DNP recipe that can be summed up as follows. (i) Using broad line polarizing agents to efficiently polarize 1H spins. (ii) Increasing the magnetic field to 6.7 T and above. (iii) Applying microwave frequency modulation. (iv) Applying (1)H-(13)C cross polarization. (v) Transferring hyperpolarized solution through a magnetic tunnel.
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Affiliation(s)
- Aurélien Bornet
- Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL), Batochime, CH-1015 Lausanne, Switzerland.
| | - Sami Jannin
- Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL), Batochime, CH-1015 Lausanne, Switzerland; Bruker BioSpin AG, Industriestrasse 26, 8117 Fällanden, Switzerland.
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Pöschko MT, Vuichoud B, Milani J, Bornet A, Bechmann M, Bodenhausen G, Jannin S, Müller N. Spin Noise Detection of Nuclear Hyperpolarization at 1.2 K. Chemphyschem 2015; 16:3859-64. [PMID: 26477605 PMCID: PMC4691331 DOI: 10.1002/cphc.201500805] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [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: 09/13/2015] [Indexed: 11/24/2022]
Abstract
We report proton spin noise spectra of a hyperpolarized solid sample of commonly used “DNP (dynamic nuclear polarization) juice” containing TEMPOL (4-hydroxy-2,2,6,6-tetramethylpiperidine N-oxide) and irradiated by a microwave field at a temperature of 1.2 K in a magnetic field of 6.7 T. The line shapes of the spin noise power spectra are sensitive to the variation of the microwave irradiation frequency and change from dip to bump, when the electron Larmor frequency is crossed, which is shown to be in good accordance with theory by simulations. Small but significant deviations from these predictions are observed, which can be related to spin noise and radiation damping phenomena that have been reported in thermally polarized systems. The non-linear dependence of the spin noise integral on nuclear polarization provides a means to monitor hyperpolarization semi-quantitatively without any perturbation of the spin system by radio frequency irradiation.
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Affiliation(s)
- Maria Theresia Pöschko
- Institute of Organic Chemistry, Johannes Kepler University Linz, Altenbergerstraße 69, 4040, Linz, Austria
| | - Basile Vuichoud
- Institut de Sciences et Ingénerie Chimiques, Ecole Polytechnique Fédérale de Lausanne, 1015, Lausanne, Switzerland
| | - Jonas Milani
- Institut de Sciences et Ingénerie Chimiques, Ecole Polytechnique Fédérale de Lausanne, 1015, Lausanne, Switzerland
| | - Aurélien Bornet
- Institut de Sciences et Ingénerie Chimiques, Ecole Polytechnique Fédérale de Lausanne, 1015, Lausanne, Switzerland
| | - Matthias Bechmann
- Institute of Organic Chemistry, Johannes Kepler University Linz, Altenbergerstraße 69, 4040, Linz, Austria
| | - Geoffrey Bodenhausen
- Institut de Sciences et Ingénerie Chimiques, Ecole Polytechnique Fédérale de Lausanne, 1015, Lausanne, Switzerland.,Département de Chimie, Ecole Normale Supérieure, PSL, 24 Rue Lhomond, 75231, Paris, Cedex 05, France.,Université Pierre-et-Marie Curie, 4 Place Jussieu, 75005, Paris (France.,UMR 7203, CNRS/UPMC/ENS, Ecole Normale Supérieure, Paris, France
| | - Sami Jannin
- Institut de Sciences et Ingénerie Chimiques, Ecole Polytechnique Fédérale de Lausanne, 1015, Lausanne, Switzerland. .,Bruker BioSpin AG, Industriestrasse 26, 8117, Fällanden, Switzerland.
| | - Norbert Müller
- Institute of Organic Chemistry, Johannes Kepler University Linz, Altenbergerstraße 69, 4040, Linz, Austria. .,Faculty of Science, University of South Bohemia, Branišovská 1645/31A, 370 05, České Budějovice, Czech Republic.
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Vuichoud B, Milani J, Chappuis Q, Bornet A, Bodenhausen G, Jannin S. Measuring absolute spin polarization in dissolution-DNP by Spin PolarimetrY Magnetic Resonance (SPY-MR). J Magn Reson 2015; 260:127-35. [PMID: 26454350 DOI: 10.1016/j.jmr.2015.09.006] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/29/2015] [Revised: 09/10/2015] [Accepted: 09/13/2015] [Indexed: 05/15/2023]
Abstract
Dynamic nuclear polarization at 1.2 K and 6.7 T allows one to achieve spin temperatures on the order of a few millikelvin, so that the high-temperature approximation (ΔE<kT) is violated for the nuclear Zeeman interaction ΔE=γB0h/(2π) of most isotopes. Provided that, after rapid dissolution and transfer to an NMR or MRI system, the hyperpolarized molecules contain at least two nuclear spins I and S with a scalar coupling JIS, the polarization of spin I (short for 'investigated') can be determined from the asymmetry AS of the multiplet of spin S (short for 'spy'), provided perturbations due to second-order (strong coupling) effects are properly taken into account. If spin S is suitably discreet and does not affect the relaxation of spin I, this provides an elegant way of measuring spin polarizations 'on the fly' in a broad range of molecules, thus obviating the need for laborious measurements of signal intensities at thermal equilibrium. The method, dubbed Spin PolarimetrY Magnetic Resonance (SPY-MR), is illustrated for various pairs of (13)C spins (I, S) in acetate and pyruvate.
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Affiliation(s)
- Basile Vuichoud
- Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne, 1015 Lausanne, Switzerland.
| | - Jonas Milani
- Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne, 1015 Lausanne, Switzerland
| | - Quentin Chappuis
- Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne, 1015 Lausanne, Switzerland
| | - Aurélien Bornet
- Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne, 1015 Lausanne, Switzerland
| | - Geoffrey Bodenhausen
- Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne, 1015 Lausanne, Switzerland; Ecole Normale Supérieure-PSL Research University, Département de Chimie, 24 rue Lhomond, 75005 Paris, France; Sorbonne Universités, UPMC Paris 06, LBM, 4 place Jussieu, 75005 Paris, France; CNRS, UMR 7203 LBM, 75005 Paris, France
| | - Sami Jannin
- Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne, 1015 Lausanne, Switzerland; Bruker BioSpin AG, Industriestrasse 26, 8117 Fällanden, Switzerland.
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Chappuis Q, Milani J, Vuichoud B, Bornet A, Gossert AD, Bodenhausen G, Jannin S. Hyperpolarized Water to Study Protein-Ligand Interactions. J Phys Chem Lett 2015; 6:1674-1678. [PMID: 26263332 DOI: 10.1021/acs.jpc-lett.5b00403] [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] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
The affinity between a chosen target protein and small molecules is a key aspect of drug discovery. Screening by popular NMR methods such as Water-LOGSY suffers from low sensitivity and from false positives caused by aggregated or denatured proteins. This work demonstrates that the sensitivity of Water-LOGSY can be greatly boosted by injecting hyperpolarized water into solutions of proteins and ligands. Ligand binding can be detected in a few seconds, whereas about 30 min is usually required without hyperpolarization. Hyperpolarized water also enhances proton signals of proteins at concentrations below 20 μM so that one can verify in a few seconds whether the proteins remain intact or have been denatured.
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Affiliation(s)
- Quentin Chappuis
- †Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL), 1015 Lausanne, Switzerland
| | - Jonas Milani
- †Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL), 1015 Lausanne, Switzerland
| | - Basile Vuichoud
- †Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL), 1015 Lausanne, Switzerland
| | - Aurélien Bornet
- †Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL), 1015 Lausanne, Switzerland
| | - Alvar D Gossert
- ‡Novartis Institutes for BioMedical Research, 4002 Basel, Switzerland
| | - Geoffrey Bodenhausen
- †Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL), 1015 Lausanne, Switzerland
- §Département de Chimie, Ecole Normale Supérieure, PSL, 75005 Paris, France
- ⊥Sorbonne Université, UPMC Univ Paris 06, 75005 Paris, France
- #Laboratoire des BioMolécules, UMR 7203, 75005 Paris, France
| | - Sami Jannin
- †Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL), 1015 Lausanne, Switzerland
- ∥Bruker BioSpin AG, 8117 Fällanden, Switzerland
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Abstract
The affinity between a chosen target protein and small molecules is a key aspect of drug discovery. Screening by popular NMR methods such as Water-LOGSY suffers from low sensitivity and from false positives caused by aggregated or denatured proteins. This work demonstrates that the sensitivity of Water-LOGSY can be greatly boosted by injecting hyperpolarized water into solutions of proteins and ligands. Ligand binding can be detected in a few seconds, whereas about 30 min is usually required without hyperpolarization. Hyperpolarized water also enhances proton signals of proteins at concentrations below 20 μM so that one can verify in a few seconds whether the proteins remain intact or have been denatured.
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Affiliation(s)
- Quentin Chappuis
- †Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL), 1015 Lausanne, Switzerland
| | - Jonas Milani
- †Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL), 1015 Lausanne, Switzerland
| | - Basile Vuichoud
- †Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL), 1015 Lausanne, Switzerland
| | - Aurélien Bornet
- †Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL), 1015 Lausanne, Switzerland
| | - Alvar D Gossert
- ‡Novartis Institutes for BioMedical Research, 4002 Basel, Switzerland
| | - Geoffrey Bodenhausen
- †Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL), 1015 Lausanne, Switzerland
- §Département de Chimie, Ecole Normale Supérieure, PSL, 75005 Paris, France
- ⊥Sorbonne Université, UPMC Univ Paris 06, 75005 Paris, France
- #Laboratoire des BioMolécules, UMR 7203, 75005 Paris, France
| | - Sami Jannin
- †Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL), 1015 Lausanne, Switzerland
- ∥Bruker BioSpin AG, 8117 Fällanden, Switzerland
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Abstract
We show that an imbalance between the populations of singlet (S) and triplet (T) states in pairs of magnetically equivalent spins can be generated by dissolution dynamic nuclear polarization. In partly deuterated ethanol (CD3(13)CH2OD), this T/S imbalance can be transferred by cross-relaxation to observable, enhanced signals of protons and coupled (13)C.
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Affiliation(s)
- Daniele Mammoli
- Institut des Sciences et Ingéniérie Chimiques, Ecole Polytechnique Fédérale de Lausanne, 1015 Lausanne, Switzerland
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Milani J, Vuichoud B, Bornet A, Miéville P, Mottier R, Jannin S, Bodenhausen G. A magnetic tunnel to shelter hyperpolarized fluids. Rev Sci Instrum 2015; 86:024101. [PMID: 25725861 DOI: 10.1063/1.4908196] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
Abstract
To shield solutions carrying hyperpolarized nuclear magnetization from rapid relaxation during transfer through low fields, the transfer duct can be threaded through an array of permanent magnets. The advantages are illustrated for solutions containing hyperpolarized (1)H and (13)C nuclei in a variety of molecules.
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Affiliation(s)
- Jonas Milani
- Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL), Batochime, CH-1015 Lausanne, Switzerland
| | - Basile Vuichoud
- Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL), Batochime, CH-1015 Lausanne, Switzerland
| | - Aurélien Bornet
- Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL), Batochime, CH-1015 Lausanne, Switzerland
| | - Pascal Miéville
- Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL), Batochime, CH-1015 Lausanne, Switzerland
| | - Roger Mottier
- Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL), Batochime, CH-1015 Lausanne, Switzerland
| | - Sami Jannin
- Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL), Batochime, CH-1015 Lausanne, Switzerland
| | - Geoffrey Bodenhausen
- Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL), Batochime, CH-1015 Lausanne, Switzerland
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Dumez JN, Milani J, Vuichoud B, Bornet A, Lalande-Martin J, Tea I, Yon M, Maucourt M, Deborde C, Moing A, Frydman L, Bodenhausen G, Jannin S, Giraudeau P. Hyperpolarized NMR of plant and cancer cell extracts at natural abundance. Analyst 2015. [DOI: 10.1039/c5an01203a] [Citation(s) in RCA: 68] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Natural abundance 13C 1D and 2D NMR spectra of biological extracts are recorded in a single scan for samples hyperpolarised by dissolution dynamic nuclear polarization combined with cross polarization.
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Bornet A, Ji X, Mammoli D, Vuichoud B, Milani J, Bodenhausen G, Jannin S. Long-lived states of magnetically equivalent spins populated by dissolution-DNP and revealed by enzymatic reactions. Chemistry 2014; 20:17113-8. [PMID: 25346515 PMCID: PMC4497350 DOI: 10.1002/chem.201404967] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2014] [Indexed: 12/04/2022]
Abstract
Hyperpolarization by dissolution dynamic nuclear polarization (D-DNP) offers a way of enhancing NMR signals by up to five orders of magnitude in metabolites and other small molecules. Nevertheless, the lifetime of hyperpolarization is inexorably limited, as it decays toward thermal equilibrium with the nuclear spin-lattice relaxation time. This lifetime can be extended by storing the hyperpolarization in the form of long-lived states (LLS) that are immune to most dominant relaxation mechanisms. Levitt and co-workers have shown how LLS can be prepared for a pair of inequivalent spins by D-DNP. Here, we demonstrate that this approach can also be applied to magnetically equivalent pairs of spins such as the two protons of fumarate, which can have very long LLS lifetimes. As in the case of para-hydrogen, these hyperpolarized equivalent LLS (HELLS) are not magnetically active. However, a chemical reaction such as the enzymatic conversion of fumarate into malate can break the magnetic equivalence and reveal intense NMR signals.
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Affiliation(s)
- Aurélien Bornet
- Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne1015 Lausanne (Switzerland), Fax: (+41) 76-693-9435
| | - Xiao Ji
- Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne1015 Lausanne (Switzerland), Fax: (+41) 76-693-9435
| | - Daniele Mammoli
- Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne1015 Lausanne (Switzerland), Fax: (+41) 76-693-9435
| | - Basile Vuichoud
- Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne1015 Lausanne (Switzerland), Fax: (+41) 76-693-9435
| | - Jonas Milani
- Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne1015 Lausanne (Switzerland), Fax: (+41) 76-693-9435
| | - Geoffrey Bodenhausen
- Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne1015 Lausanne (Switzerland), Fax: (+41) 76-693-9435
- École Normale Supérieure-PSL Research University, Département de Chimie24 rue Lhomond, 75005 Paris (France)
- Sorbonne UniversitésUPMC Univ Paris 06, 4 place Jussieu, 75005 Paris (France)
- CNRS, UMR 7203 LBM, 75005 Paris (France)
| | - Sami Jannin
- Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne1015 Lausanne (Switzerland), Fax: (+41) 76-693-9435
- Bruker BioSpin AG, Industriestrasse 268117 Fällanden (Switzerland)
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Perez Linde AJ, Bornet A, Milani J, Vuichoud B, Melzi R, Jannin S, Bodenhausen G. Cross polarization from (1)H to quadrupolar (6)Li nuclei for dissolution DNP. Phys Chem Chem Phys 2014; 16:24813-7. [PMID: 25319311 DOI: 10.1039/c4cp03592e] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Cross polarization from protons to quadrupolar (6)Li nuclei is combined with dynamic nuclear polarization of protons at 1.2 K and 6.7 T using TEMPOL as a polarizing agent followed by rapid dissolution. Compared to direct (6)Li DNP without cross-polarization, a higher nuclear spin polarization P((6)Li) can be obtained in a shorter time. A double resonance (1)H-(6)Li probe was designed that is equipped for Longitudinally Detected Electron Spin Resonance.
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Affiliation(s)
- Angel J Perez Linde
- Institut des Sciences et Ingénierie Chimiques (ISIC), École Polytechnique Fédérale de Lausanne (EPFL), 1015 Lausanne, Switzerland.
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Miclet E, Abergel D, Bornet A, Milani J, Jannin S, Bodenhausen G. Toward Quantitative Measurements of Enzyme Kinetics by Dissolution Dynamic Nuclear Polarization. J Phys Chem Lett 2014; 5:3290-5. [PMID: 26278433 DOI: 10.1021/jz501411d] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Dissolution dynamic nuclear polarization (D-DNP) experiments enabled us to study the kinetics of the enzymatic phosphorylation reaction of glucose to form glucose-6-phosphate (G6P) by hexokinase (HK), with or without the presence of an excess of G6P, which is known to be an inhibitor of the enzyme. Against all expectations, our observations demonstrate that the phosphorylation of both α and β glucose anomers occurs with comparable kinetics. The catalytic constant of the reaction was estimated based on a simple kinetic model tailored for hyperpolarized systems.
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Affiliation(s)
- Emeric Miclet
- †École Normale Supérieure-PSL Research University, Département de Chimie, 24 rue Lhomond, F-75005 Paris, France
- ‡Sorbonne Universités, UPMC Univ Paris 06, LBM, 4 place Jussieu, F-75005, Paris, France
- §CNRS, UMR 7203 LBM, F-75005, Paris, France
| | - Daniel Abergel
- †École Normale Supérieure-PSL Research University, Département de Chimie, 24 rue Lhomond, F-75005 Paris, France
- ‡Sorbonne Universités, UPMC Univ Paris 06, LBM, 4 place Jussieu, F-75005, Paris, France
- §CNRS, UMR 7203 LBM, F-75005, Paris, France
| | - Aurélien Bornet
- ∥Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL), Batochime, CH-1015 Lausanne, Switzerland
| | - Jonas Milani
- ∥Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL), Batochime, CH-1015 Lausanne, Switzerland
| | - Sami Jannin
- †École Normale Supérieure-PSL Research University, Département de Chimie, 24 rue Lhomond, F-75005 Paris, France
- ‡Sorbonne Universités, UPMC Univ Paris 06, LBM, 4 place Jussieu, F-75005, Paris, France
- §CNRS, UMR 7203 LBM, F-75005, Paris, France
- ∥Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL), Batochime, CH-1015 Lausanne, Switzerland
- ⊥Bruker BioSpin AG, Industriestrasse 26, 8117 Fällanden, Switzerland
| | - Geoffrey Bodenhausen
- †École Normale Supérieure-PSL Research University, Département de Chimie, 24 rue Lhomond, F-75005 Paris, France
- ‡Sorbonne Universités, UPMC Univ Paris 06, LBM, 4 place Jussieu, F-75005, Paris, France
- §CNRS, UMR 7203 LBM, F-75005, Paris, France
- ∥Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL), Batochime, CH-1015 Lausanne, Switzerland
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Buratto R, Bornet A, Milani J, Mammoli D, Vuichoud B, Salvi N, Singh M, Laguerre A, Passemard S, Gerber-Lemaire S, Jannin S, Bodenhausen G. Drug screening boosted by hyperpolarized long-lived states in NMR. ChemMedChem 2014; 9:2509-15. [PMID: 25196781 PMCID: PMC4506523 DOI: 10.1002/cmdc.201402214] [Citation(s) in RCA: 54] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2014] [Revised: 07/10/2014] [Indexed: 11/08/2022]
Abstract
Transverse and longitudinal relaxation times (T1ρ and T1) have been widely exploited in NMR to probe the binding of ligands and putative drugs to target proteins. We have shown recently that long-lived states (LLS) can be more sensitive to ligand binding. LLS can be excited if the ligand comprises at least two coupled spins. Herein we broaden the scope of ligand screening by LLS to arbitrary ligands by covalent attachment of a functional group, which comprises a pair of coupled protons that are isolated from neighboring magnetic nuclei. The resulting functionalized ligands have longitudinal relaxation times T1(1H) that are sufficiently long to allow the powerful combination of LLS with dissolution dynamic nuclear polarization (D-DNP). Hyperpolarized weak “spy ligands” can be displaced by high-affinity competitors. Hyperpolarized LLS allow one to decrease both protein and ligand concentrations to micromolar levels and to significantly increase sample throughput.
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Affiliation(s)
- Roberto Buratto
- Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL), 1015 Lausanne (Switzerland)
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Vuichoud B, Milani J, Bornet A, Melzi R, Jannin S, Bodenhausen G. Hyperpolarization of deuterated metabolites via remote cross-polarization and dissolution dynamic nuclear polarization. J Phys Chem B 2014; 118:1411-5. [PMID: 24397585 DOI: 10.1021/jp4118776] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
In deuterated molecules such as [1-(13)C]pyruvate-d3, the nuclear spin polarization of (13)C nuclei can be enhanced by combining Hartmann-Hahn cross-polarization (CP) at low temperatures (1.2 K) with dissolution dynamic nuclear polarization (D-DNP). The polarization is transferred from remote solvent protons to the (13)C spins of interest. This allows one not only to slightly reduce build-up times but also to increase polarization levels and extend the lifetimes T1((13)C) of the enhanced (13)C polarization during and after transfer from the polarizer to the NMR or MRI system. This extends time scales over which metabolic processes and chemical reactions can be monitored.
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Affiliation(s)
- Basile Vuichoud
- Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne , 1015 Lausanne, Switzerland
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Bornet A, Milani J, Wang S, Mammoli D, Buratto R, Salvi N, Segaw TF, Vitzthum V, Miéville P, Chinthalapalli S, Perez-Linde AJ, Carnevale D, Jannin S, Caporinia M, Ulzega S, Rey M, Bodenhausen G. Dynamic Nuclear Polarization and other magnetic ideas at EPFL. Chimia (Aarau) 2013; 66:734-40. [PMID: 23146257 DOI: 10.2533/chimia.2012.734] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
Although nuclear magnetic resonance (NMR) can provide a wealth of information, it often suffers from a lack of sensitivity. Dynamic Nuclear Polarization (DNP) provides a way to increase the polarization and hence the signal intensities in NMR spectra by transferring the favourable electron spin polarization of paramagnetic centres to the surrounding nuclear spins through appropriate microwave irradiation. In our group at EPFL, two complementary DNP techniques are under investigation: the combination of DNP with magic angle spinning at temperatures near 100 K ('MAS-DNP'), and the combination of DNP at 1.2 K with rapid heating followed by the transfer of the sample to a high-resolution magnet ('dissolution DNP'). Recent applications of MAS-DNP to surfaces, as well as new developments of magnetization transfer of (1)H to (13)C at 1.2 K prior to dissolution will illustrate the work performed in our group. A second part of the paper will give an overview of some 'non-enhanced' activities of our laboratory in liquid- and solid-state NMR.
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Affiliation(s)
- Aurélien Bornet
- Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland.
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Bornet A, Melzi R, Perez Linde AJ, Hautle P, van den Brandt B, Jannin S, Bodenhausen G. Boosting Dissolution Dynamic Nuclear Polarization by Cross Polarization. J Phys Chem Lett 2013; 4:111-114. [PMID: 26291221 DOI: 10.1021/jz301781t] [Citation(s) in RCA: 83] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
The efficiency of dissolution dynamic nuclear polarization can be boosted by Hartmann-Hahn cross polarization at temperatures near 1.2 K. This enables high throughput of hyperpolarized solutions with substantial gains in buildup times and polarization levels. During dissolution and transport, the (13)C nuclear spin polarization P((13)C) merely decreases from 45 to 40%.
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Affiliation(s)
- Aurélien Bornet
- †Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL), Batochime, CH-1015 Lausanne, Switzerland
| | - Roberto Melzi
- ‡Bruker Italia S.r.l., Viale V. Lancetti 43, 20158 Milano, Italy
| | - Angel J Perez Linde
- †Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL), Batochime, CH-1015 Lausanne, Switzerland
| | | | | | - Sami Jannin
- †Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL), Batochime, CH-1015 Lausanne, Switzerland
| | - Geoffrey Bodenhausen
- †Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL), Batochime, CH-1015 Lausanne, Switzerland
- ⊥Département de Chimie, Ecole Normale Supérieure, 24 Rue Lhomond, 75231 Paris Cedex 05, France
- #Université Pierre-et-Marie Curie, Paris, France
- ∇UMR 7203, CNRS/UPMC/ENS, Paris, France
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Jannin S, Bornet A, Melzi R, Bodenhausen G. High field dynamic nuclear polarization at 6.7T: Carbon-13 polarization above 70% within 20min. Chem Phys Lett 2012. [DOI: 10.1016/j.cplett.2012.08.017] [Citation(s) in RCA: 96] [Impact Index Per Article: 8.0] [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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Chinthalapalli S, Bornet A, Segawa TF, Sarkar R, Jannin S, Bodenhausen G. Ultrahigh-resolution magnetic resonance in inhomogeneous magnetic fields: two-dimensional long-lived-coherence correlation spectroscopy. Phys Rev Lett 2012; 109:047602. [PMID: 23006108 DOI: 10.1103/physrevlett.109.047602] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/02/2012] [Indexed: 06/01/2023]
Abstract
A half-century quest for improving resolution in Nuclear Magnetic Resonance (NMR) and Magnetic Resonance Imaging (MRI) has enabled the study of molecular structures, biological interactions, and fine details of anatomy. This progress largely relied on the advent of sophisticated superconducting magnets that can provide stable and homogeneous fields with temporal and spatial variations below ΔB(0)/B(0)<0.01 ppm. In many cases however, inherent properties of the objects under investigation, pulsating arteries, breathing lungs, tissue-air interfaces, surgical implants, etc., lead to fluctuations and losses of local homogeneity. A new method dubbed "long-lived-coherence correlation spectroscopy" (LLC-COSY) opens the way to overcome both inhomogeneous and homogeneous broadening, which arise from local variations in static fields and fluctuating dipole-dipole interactions, respectively. LLC-COSY makes it possible to obtain ultrahigh resolution two-dimensional spectra, with linewidths on the order of Δν=0.1 to 1 Hz, even in very inhomogeneous fields (ΔB(0)/B(0)>10 ppm or 5000 Hz at 9.7 T), and can improve resolution by a factor up to 9 when the homogeneous linewidths are determined by dipole-dipole interactions. The resulting LLC-COSY spectra display chemical shift differences and scalar couplings in two orthogonal dimensions, like in "J spectroscopy." LLC-COSY does not require any sophisticated gradient switching or frequency-modulated pulses. Applications to in-cell NMR and to magnetic resonance spectroscopy (MRS) of selected volume elements in MRI appear promising, particularly when susceptibility variations tend to preclude high resolution.
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Salvi N, Buratto R, Bornet A, Ulzega S, Rentero Rebollo I, Angelini A, Heinis C, Bodenhausen G. Boosting the sensitivity of ligand-protein screening by NMR of long-lived states. J Am Chem Soc 2012; 134:11076-9. [PMID: 22686687 DOI: 10.1021/ja303301w] [Citation(s) in RCA: 64] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A new NMR method for the study of ligand-protein interactions exploits the unusual lifetimes of long-lived states (LLSs). The new method provides better contrast between bound and free ligands and requires a protein-ligand ratio ca. 25 times lower than for established T(1ρ) methods, thus saving on costly proteins. The new LLS method was applied to the screening of inhibitors of urokinase-type plasminogen activator (uPA), which is a prototypical target of cancer research. With only 10 μM protein, a dissociation constant (K(D)) of 180 ± 20 nM was determined for the strong ligand (inhibitor) UK-18, which can be compared with K(D) = 157 ± 39 nM determined by the established surface plasmon resonance method.
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Affiliation(s)
- Nicola Salvi
- Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne, 1015 Lausanne, Switzerland
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Jannin S, Bornet A, Colombo S, Bodenhausen G. Low-temperature cross polarization in view of enhancing dissolution Dynamic Nuclear Polarization in NMR. Chem Phys Lett 2011. [DOI: 10.1016/j.cplett.2011.10.042] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
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Segawa TF, Bornet A, Salvi N, Miéville P, Vitzthum V, Carnevale D, Jannin S, Caporini MA, Ulzega S, Vasos PR, Rey M, Bodenhausen G. Extending timescales and narrowing linewidths in NMR. Chimia (Aarau) 2011; 65:652-5. [PMID: 22026172 DOI: 10.2533/chimia.2011.652] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
Among the different fields of research in nuclear magnetic resonance (NMR) which are currently investigated in the Laboratory of Biomolecular Magnetic Resonance (LRMB), two subjects that are closely related to each other are presented in this article. On the one hand, we show how to populate long-lived states (LLS) that have long lifetimes T(LLS) which allow one to go beyond the usual limits imposed by the longitudinal relaxation time T1. This makes it possible to extend NMR experiments to longer time-scales. As an application, we demonstrate the extension of the timescale of diffusion measurements by NMR spectroscopy. On the other hand, we review our work on long-lived coherences (LLC), a particular type of coherence between two spin states that oscillates with the frequency of the scalar coupling constant J(IS) and decays with a time constant T(LLC). Again, this time constant T(LLC) can be much longer than the transverse relaxation time T2. By extending the coherence lifetimes, we can narrow the linewidths to an unprecedented extent. J-couplings and residual dipolar couplings (RDCs) in weakly-oriented phases can be measured with the highest precision.
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Affiliation(s)
- Takuya F Segawa
- Ecole Polytechnique Fédérale de Lausanne, Institut des Sciences et Ingénierie Chimiques, Laboratoire de Résonance Magnétique Biomoléculaire, Batochime, CH-1015 Lausanne, Switzerland.
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Bornet A, Ahuja P, Sarkar R, Fernandes L, Hadji S, Lee SY, Haririnia A, Fushman D, Bodenhausen G, Vasos PR. Long-lived states to monitor protein unfolding by proton NMR. Chemphyschem 2011; 12:2729-34. [PMID: 21882334 PMCID: PMC3368952 DOI: 10.1002/cphc.201100365] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2011] [Indexed: 11/12/2022]
Abstract
The relaxation of long-lived states (LLS) corresponds to the slow return to statistical thermal equilibrium between symmetric and antisymmetric proton spin states. This process is remarkably sensitive to the presence of external spins and can be used to obtain information about partial unfolding of proteins. We detected the appearance of a destabilized conformer of ubiquitin when urea is added to the protein in its native state. This conformer shows increased mobility in the C-terminus, which significantly extends the lifetimes of proton LLS magnetisation in Ser-65. These changes could not be detected by conventional measurements of T(1) and T(2) relaxation times of protons, and would hardly be sensed by carbon-13 or nitrogen-15 relaxation measurements. Conformers with similar dynamic and structural features, as revealed by LLS relaxation times, could be observed, in the absence of urea, in two ubiquitin mutants, L67S and L69S.
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Affiliation(s)
- Aurélien Bornet
- Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne, EPFL, Batochime, 1015 Lausanne, Switzerland
| | - Puneet Ahuja
- Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne, EPFL, Batochime, 1015 Lausanne, Switzerland
| | - Riddhiman Sarkar
- School of Chemistry, University of Southampton, Southampton SO17 1BJ, England
| | - Laetitia Fernandes
- Equipe de RMN des Substances d'Intérêt Biologique, UMR 8601 CNRS, Université Paris Descartes, Sorbonne Paris Cité, 45, rue des Saints Pères 75006, Paris, France
| | - Sonia Hadji
- Equipe de RMN des Substances d'Intérêt Biologique, UMR 8601 CNRS, Université Paris Descartes, Sorbonne Paris Cité, 45, rue des Saints Pères 75006, Paris, France
| | - Shirley Y. Lee
- Department of Chemistry & Biochemistry, Center for Biomolecular Structure and Organization, University of Maryland, College Park, MD 20742, U.S.A
| | - Aydin Haririnia
- Department of Chemistry & Biochemistry, Center for Biomolecular Structure and Organization, University of Maryland, College Park, MD 20742, U.S.A
| | - David Fushman
- Department of Chemistry & Biochemistry, Center for Biomolecular Structure and Organization, University of Maryland, College Park, MD 20742, U.S.A
| | - Geoffrey Bodenhausen
- Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne, EPFL, Batochime, 1015 Lausanne, Switzerland
- Département de Chimie, Ecole Normale Supérieure, 24 Rue Lhomond, 75231, Paris Cedex 05
- Université Pierre-et-Marie Curie, Paris
- CNRS, UMR 7203, France
| | - Paul R. Vasos
- Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne, EPFL, Batochime, 1015 Lausanne, Switzerland
- Equipe de RMN des Substances d'Intérêt Biologique, UMR 8601 CNRS, Université Paris Descartes, Sorbonne Paris Cité, 45, rue des Saints Pères 75006, Paris, France
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Bornet A, Ahuja P, Sarkar R, Fernandes L, Hadji S, Lee SY, Haririnia A, Fushman D, Bodenhausen G, Vasos PR. Cover Picture: Long-Lived States to Monitor Protein Unfolding by Proton NMR (ChemPhysChem 15/2011). Chemphyschem 2011. [DOI: 10.1002/cphc.201190075] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [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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Bornet A, Jannin S, Konter JA(T, Hautle P, van den Brandt B, Bodenhausen G. Ultra High-Resolution NMR: Sustained Induction Decays of Long-Lived Coherences. J Am Chem Soc 2011; 133:15644-9. [DOI: 10.1021/ja2052792] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [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)
- Aurélien Bornet
- Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne, EPFL, Batochime, 1015 Lausanne, Switzerland
| | - Sami Jannin
- Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne, EPFL, Batochime, 1015 Lausanne, Switzerland
| | | | | | | | - Geoffrey Bodenhausen
- Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne, EPFL, Batochime, 1015 Lausanne, Switzerland
- Département de Chimie, Ecole Normale Supérieure, 24 Rue Lhomond, 75231, Paris Cedex 05, France
- Université Pierre-et-Marie Curie, Paris, France
- CNRS, UMR 7203, Paris, France
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Bornet A, Jannin S, Bodenhausen G. Three-field NMR to preserve hyperpolarized proton magnetization as long-lived states in moderate magnetic fields. Chem Phys Lett 2011. [DOI: 10.1016/j.cplett.2011.07.015] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [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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Sarkar R, Ahuja P, Vasos PR, Bornet A, Wagnières O, Bodenhausen G. Long-lived coherences for line-narrowing in high-field NMR. Prog Nucl Magn Reson Spectrosc 2011; 59:83-90. [PMID: 21600357 DOI: 10.1016/j.pnmrs.2010.10.002] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/08/2010] [Accepted: 10/14/2010] [Indexed: 05/30/2023]
Affiliation(s)
- Riddhiman Sarkar
- School of Chemistry, University of Southampton, Southampton SO17 1BJ, England
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Bornet A, Sarkar R, Bodenhausen G. Life-times of long-lived coherences under different motional regimes. J Magn Reson 2010; 206:154-156. [PMID: 20615732 DOI: 10.1016/j.jmr.2010.06.004] [Citation(s) in RCA: 7] [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] [Received: 04/23/2010] [Revised: 05/24/2010] [Accepted: 06/02/2010] [Indexed: 05/29/2023]
Abstract
The transverse relaxation rate R(2) of single quantum coherences, the relaxation rate R(LLC) of long-lived coherences (LLC), and the ratio R(2)/R(LLC) have been studied by experiment, simulation and theory in the two-spin system formed by the Glycine aliphatic protons of the dipeptide Alanine-Glycine as a function of the correlation time of rotational diffusion.
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Affiliation(s)
- Aurélien Bornet
- Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne, EPFL, Batochime, 1015 Lausanne, Switzerland
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Bornet A, Pasi A, Hartmann HP. [Poisoning by mushrooms other than Amanita phalloides. Clinical aspects, epidemiology and prevention]. Rev Med Suisse Romande 1983; 103:447-55. [PMID: 6683867] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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