1
|
Barskiy DA, Coffey AM, Nikolaou P, Mikhaylov DM, Goodson BM, Branca RT, Lu GJ, Shapiro MG, Telkki VV, Zhivonitko VV, Koptyug IV, Salnikov OG, Kovtunov KV, Bukhtiyarov VI, Rosen MS, Barlow MJ, Safavi S, Hall IP, Schröder L, Chekmenev EY. NMR Hyperpolarization Techniques of Gases. Chemistry 2017; 23:725-751. [PMID: 27711999 PMCID: PMC5462469 DOI: 10.1002/chem.201603884] [Citation(s) in RCA: 110] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2016] [Indexed: 01/09/2023]
Abstract
Nuclear spin polarization can be significantly increased through the process of hyperpolarization, leading to an increase in the sensitivity of nuclear magnetic resonance (NMR) experiments by 4-8 orders of magnitude. Hyperpolarized gases, unlike liquids and solids, can often be readily separated and purified from the compounds used to mediate the hyperpolarization processes. These pure hyperpolarized gases enabled many novel MRI applications including the visualization of void spaces, imaging of lung function, and remote detection. Additionally, hyperpolarized gases can be dissolved in liquids and can be used as sensitive molecular probes and reporters. This Minireview covers the fundamentals of the preparation of hyperpolarized gases and focuses on selected applications of interest to biomedicine and materials science.
Collapse
Affiliation(s)
- Danila A Barskiy
- Department of Radiology, Department of Biomedical Engineering, Department of Physics, Vanderbilt-Ingram Cancer Center (VICC), Vanderbilt University Institute of Imaging Science (VUIIS), Vanderbilt University, Nashville, TN, 37232, USA
| | - Aaron M Coffey
- Department of Radiology, Department of Biomedical Engineering, Department of Physics, Vanderbilt-Ingram Cancer Center (VICC), Vanderbilt University Institute of Imaging Science (VUIIS), Vanderbilt University, Nashville, TN, 37232, USA
| | - Panayiotis Nikolaou
- Department of Radiology, Department of Biomedical Engineering, Department of Physics, Vanderbilt-Ingram Cancer Center (VICC), Vanderbilt University Institute of Imaging Science (VUIIS), Vanderbilt University, Nashville, TN, 37232, USA
| | | | - Boyd M Goodson
- Southern Illinois University, Department of Chemistry and Biochemistry, Materials Technology Center, Carbondale, IL, 62901, USA
| | - Rosa T Branca
- Department of Physics and Astronomy, Biomedical Research Imaging Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, 27599, USA
| | - George J Lu
- Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, CA, 91125, USA
| | - Mikhail G Shapiro
- Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, CA, 91125, USA
| | | | - Vladimir V Zhivonitko
- International Tomography Center SB RAS, 630090, Novosibirsk, Russia
- Novosibirsk State University, Pirogova St. 2, 630090, Novosibirsk, Russia
| | - Igor V Koptyug
- International Tomography Center SB RAS, 630090, Novosibirsk, Russia
- Novosibirsk State University, Pirogova St. 2, 630090, Novosibirsk, Russia
| | - Oleg G Salnikov
- International Tomography Center SB RAS, 630090, Novosibirsk, Russia
- Novosibirsk State University, Pirogova St. 2, 630090, Novosibirsk, Russia
| | - Kirill V Kovtunov
- International Tomography Center SB RAS, 630090, Novosibirsk, Russia
- Novosibirsk State University, Pirogova St. 2, 630090, Novosibirsk, Russia
| | - Valerii I Bukhtiyarov
- Boreskov Institute of Catalysis SB RAS, 5 Acad. Lavrentiev Pr., 630090, Novosibirsk, Russia
| | - Matthew S Rosen
- MGH/A.A. Martinos Center for Biomedical Imaging, Boston, MA, 02129, USA
| | - Michael J Barlow
- Respiratory Medicine Department, Queen's Medical Centre, University of Nottingham Medical School, Nottingham, NG7 2UH, UK
| | - Shahideh Safavi
- Respiratory Medicine Department, Queen's Medical Centre, University of Nottingham Medical School, Nottingham, NG7 2UH, UK
| | - Ian P Hall
- Respiratory Medicine Department, Queen's Medical Centre, University of Nottingham Medical School, Nottingham, NG7 2UH, UK
| | - Leif Schröder
- Molecular Imaging, Department of Structural Biology, Leibniz-Institut für Molekulare Pharmakologie (FMP), 13125, Berlin, Germany
| | - Eduard Y Chekmenev
- Department of Radiology, Department of Biomedical Engineering, Department of Physics, Vanderbilt-Ingram Cancer Center (VICC), Vanderbilt University Institute of Imaging Science (VUIIS), Vanderbilt University, Nashville, TN, 37232, USA
- Russian Academy of Sciences, 119991, Moscow, Russia
| |
Collapse
|
2
|
Truxal AE, Slack CC, Gomes MD, Vassiliou CC, Wemmer DE, Pines A. Nondisruptive Dissolution of Hyperpolarized
129
Xe into Viscous Aqueous and Organic Liquid Crystalline Environments. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201511539] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Ashley E. Truxal
- Department of Chemistry University of California Berkeley CA 94720-1460 USA
- Material Science Division Lawrence Berkeley National Laboratory Berkeley CA 94720-1460 USA
| | - Clancy C. Slack
- Department of Chemistry University of California Berkeley CA 94720-1460 USA
- Material Science Division Lawrence Berkeley National Laboratory Berkeley CA 94720-1460 USA
| | - Muller D. Gomes
- Department of Chemistry University of California Berkeley CA 94720-1460 USA
- Material Science Division Lawrence Berkeley National Laboratory Berkeley CA 94720-1460 USA
| | - Christophoros C. Vassiliou
- Department of Chemistry University of California Berkeley CA 94720-1460 USA
- Material Science Division Lawrence Berkeley National Laboratory Berkeley CA 94720-1460 USA
| | - David E. Wemmer
- Department of Chemistry University of California Berkeley CA 94720-1460 USA
- Molecular Biophysics and Integrated Bioimaging Division Lawrence Berkeley National Laboratory Berkeley CA 94720-1460 USA
| | - Alexander Pines
- Department of Chemistry University of California Berkeley CA 94720-1460 USA
- Material Science Division Lawrence Berkeley National Laboratory Berkeley CA 94720-1460 USA
| |
Collapse
|
3
|
Truxal AE, Slack CC, Gomes MD, Vassiliou CC, Wemmer DE, Pines A. Nondisruptive Dissolution of Hyperpolarized (129)Xe into Viscous Aqueous and Organic Liquid Crystalline Environments. Angew Chem Int Ed Engl 2016; 55:4666-70. [PMID: 26954536 DOI: 10.1002/anie.201511539] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2015] [Revised: 01/26/2016] [Indexed: 01/14/2023]
Abstract
Studies of hyperpolarized xenon-129 (hp-(129)Xe) in media such as liquid crystals and cell suspensions are in demand for applications ranging from biomedical imaging to materials engineering but have been hindered by the inability to bubble Xe through the desired media as a result of viscosity or perturbations caused by bubbles. Herein a device is reported that can be reliably used to dissolve hp-(129)Xe into viscous aqueous and organic samples without bubbling. This method is robust, requires small sample volumes (<60 μL), is compatible with existing NMR hardware, and is made from readily available materials. Experiments show that Xe can be introduced into viscous and aligned media without disrupting molecular order. We detected dissolved xenon in an aqueous liquid crystal that is disrupted by the shear forces of bubbling, and we observed liquid-crystal phase transitions in (MBBA). This tool allows an entirely new class of samples to be investigated by hyperpolarized-gas NMR spectroscopy.
Collapse
Affiliation(s)
- Ashley E Truxal
- Department of Chemistry, University of California, Berkeley, CA, 94720-1460, USA.,Material Science Division, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720-1460, USA
| | - Clancy C Slack
- Department of Chemistry, University of California, Berkeley, CA, 94720-1460, USA.,Material Science Division, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720-1460, USA
| | - Muller D Gomes
- Department of Chemistry, University of California, Berkeley, CA, 94720-1460, USA.,Material Science Division, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720-1460, USA
| | - Christophoros C Vassiliou
- Department of Chemistry, University of California, Berkeley, CA, 94720-1460, USA.,Material Science Division, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720-1460, USA
| | - David E Wemmer
- Department of Chemistry, University of California, Berkeley, CA, 94720-1460, USA.,Molecular Biophysics and Integrated Bioimaging Division, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720-1460, USA
| | - Alexander Pines
- Department of Chemistry, University of California, Berkeley, CA, 94720-1460, USA. .,Material Science Division, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720-1460, USA.
| |
Collapse
|
4
|
Jeong K, Slack CC, Vassiliou CC, Dao P, Gomes MD, Kennedy DJ, Truxal AE, Sperling LJ, Francis MB, Wemmer DE, Pines A. Investigation of DOTA-Metal Chelation Effects on the Chemical Shift of (129) Xe. Chemphyschem 2015; 16:3573-7. [PMID: 26376768 DOI: 10.1002/cphc.201500806] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2015] [Indexed: 01/10/2023]
Abstract
Recent work has shown that xenon chemical shifts in cryptophane-cage sensors are affected when tethered chelators bind to metals. Here, we explore the xenon shifts in response to a wide range of metal ions binding to diastereomeric forms of 1,4,7,10-tetraazacyclododecane-1,4,7,10-tetraacetic acid (DOTA) linked to cryptophane-A. The shifts induced by the binding of Ca(2+) , Cu(2+) , Ce(3+) , Zn(2+) , Cd(2+) , Ni(2+) , Co(2+) , Cr(2+) , Fe(3+) , and Hg(2+) are distinct. In addition, the different responses of the diastereomers for the same metal ion indicate that shifts are affected by partial folding with a correlation between the expected coordination number of the metal in the DOTA complex and the chemical shift of (129) Xe. These sensors may be used to detect and quantify many important metal ions, and a better understanding of the basis for the induced shifts could enhance future designs.
Collapse
Affiliation(s)
- Keunhong Jeong
- Department of Chemistry, University of California, Berkeley, CA, 94720-1460, USA.,Material Science Division, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720-1460, USA
| | - Clancy C Slack
- Department of Chemistry, University of California, Berkeley, CA, 94720-1460, USA.,Material Science Division, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720-1460, USA
| | - Christophoros C Vassiliou
- Department of Chemistry, University of California, Berkeley, CA, 94720-1460, USA.,Material Science Division, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720-1460, USA
| | - Phuong Dao
- Department of Chemistry, University of California, Berkeley, CA, 94720-1460, USA.,Material Science Division, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720-1460, USA
| | - Muller D Gomes
- Department of Chemistry, University of California, Berkeley, CA, 94720-1460, USA.,Material Science Division, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720-1460, USA
| | - Daniel J Kennedy
- Department of Chemistry, University of California, Berkeley, CA, 94720-1460, USA.,Material Science Division, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720-1460, USA
| | - Ashley E Truxal
- Department of Chemistry, University of California, Berkeley, CA, 94720-1460, USA.,Material Science Division, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720-1460, USA
| | - Lindsay J Sperling
- Department of Chemistry and Biochemistry, Santa Clara University, Sata Clara, CA, 95053-0270, USA
| | - Matthew B Francis
- Department of Chemistry, University of California, Berkeley, CA, 94720-1460, USA.,Material Science Division, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720-1460, USA
| | - David E Wemmer
- Department of Chemistry, University of California, Berkeley, CA, 94720-1460, USA.,Physical Bioscience Division, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720-1460, USA
| | - Alexander Pines
- Department of Chemistry, University of California, Berkeley, CA, 94720-1460, USA. .,Material Science Division, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720-1460, USA.
| |
Collapse
|
5
|
Schnurr M, Sloniec-Myszk J, Döpfert J, Schröder L, Hennig A. Supramolecular Assays for Mapping Enzyme Activity by Displacement-Triggered Change in Hyperpolarized (129)Xe Magnetization Transfer NMR Spectroscopy. Angew Chem Int Ed Engl 2015; 54:13444-7. [PMID: 26426128 DOI: 10.1002/anie.201507002] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2015] [Indexed: 12/26/2022]
Abstract
Reversibly bound Xe is a sensitive NMR and MRI reporter with its resonance frequency being influenced by the chemical environment of the host. Molecular imaging of enzyme activity presents a promising approach for disease identification, but current Xe biosensing concepts are limited since substrate conversion typically has little impact on the chemical shift of Xe inside tailored cavities. Herein, we exploit the ability of the product of the enzymatic reaction to bind itself to the macrocyclic hosts CB6 and CB7 and thereby displace Xe. We demonstrate the suitability of this method to map areas of enzyme activity through changes in magnetization transfer with hyperpolarized Xe under different saturation scenarios.
Collapse
Affiliation(s)
- Matthias Schnurr
- ERC Project BiosensorImaging, Leibniz-Institut für Molekulare Pharmakologie (FMP), Campus BerlinBuch, Robert-Rössle-Strasse 10, 13125 Berlin (Germany)
| | - Jagoda Sloniec-Myszk
- BAM Bundesanstalt für Materialforschung und -prüfung, Richard-Willstätter-Strasse 11, 12489 Berlin (Germany)
| | - Jörg Döpfert
- ERC Project BiosensorImaging, Leibniz-Institut für Molekulare Pharmakologie (FMP), Campus BerlinBuch, Robert-Rössle-Strasse 10, 13125 Berlin (Germany)
| | - Leif Schröder
- ERC Project BiosensorImaging, Leibniz-Institut für Molekulare Pharmakologie (FMP), Campus BerlinBuch, Robert-Rössle-Strasse 10, 13125 Berlin (Germany).
| | - Andreas Hennig
- Department of Life Sciences and Chemistry, Jacobs University Bremen, Campus Ring 1, 28759 Bremen (Germany).
| |
Collapse
|
6
|
Schnurr M, Sloniec‐Myszk J, Döpfert J, Schröder L, Hennig A. Supramolekulare Assays zur Lokalisation von Enzymaktivität durch Verdrängungs‐induzierte Änderungen in der Magnetisierungstransfer‐NMR‐Spektroskopie mit hyperpolarisiertem
129
Xe. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201507002] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Matthias Schnurr
- ERC Project BiosensorImaging, Leibniz‐Institut für Molekulare Pharmakologie (FMP), Campus Berlin‐Buch, Robert‐Rössle‐Straße 10, 13125 Berlin (Deutschland)
| | - Jagoda Sloniec‐Myszk
- BAM Bundesanstalt für Materialforschung und ‐prüfung, Richard‐Willstätter‐Straße 11, 12489 Berlin (Deutschland)
| | - Jörg Döpfert
- ERC Project BiosensorImaging, Leibniz‐Institut für Molekulare Pharmakologie (FMP), Campus Berlin‐Buch, Robert‐Rössle‐Straße 10, 13125 Berlin (Deutschland)
| | - Leif Schröder
- ERC Project BiosensorImaging, Leibniz‐Institut für Molekulare Pharmakologie (FMP), Campus Berlin‐Buch, Robert‐Rössle‐Straße 10, 13125 Berlin (Deutschland)
| | - Andreas Hennig
- Department of Life Sciences and Chemistry, Jacobs University Bremen, Campus Ring 1, 28759 Bremen (Deutschland)
| |
Collapse
|
7
|
Zamberlan F, Lesbats C, Rogers NJ, Krupa JL, Pavlovskaya GE, Thomas NR, Faas HM, Meersmann T. Molecular Sensing with Hyperpolarized129Xe Using Switchable Chemical Exchange Relaxation Transfer. Chemphyschem 2015; 16:2294-8. [DOI: 10.1002/cphc.201500367] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2015] [Indexed: 11/06/2022]
|
8
|
Rossella F, Rose HM, Witte C, Jayapaul J, Schröder L. Design and Characterization of Two Bifunctional Cryptophane A-Based Host Molecules for Xenon Magnetic Resonance Imaging Applications. Chempluschem 2014. [DOI: 10.1002/cplu.201402179] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
|
9
|
Klippel S, Döpfert J, Jayapaul J, Kunth M, Rossella F, Schnurr M, Witte C, Freund C, Schröder L. Cell Tracking with Caged Xenon: Using Cryptophanes as MRI Reporters upon Cellular Internalization. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201307290] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
10
|
Klippel S, Döpfert J, Jayapaul J, Kunth M, Rossella F, Schnurr M, Witte C, Freund C, Schröder L. Cell tracking with caged xenon: using cryptophanes as MRI reporters upon cellular internalization. Angew Chem Int Ed Engl 2013; 53:493-6. [PMID: 24307424 DOI: 10.1002/anie.201307290] [Citation(s) in RCA: 61] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2013] [Indexed: 11/09/2022]
Abstract
Caged xenon has great potential in overcoming sensitivity limitations for solution-state NMR detection of dilute molecules. However, no application of such a system as a magnetic resonance imaging (MRI) contrast agent has yet been performed with live cells. We demonstrate MRI localization of cells labeled with caged xenon in a packed-bed bioreactor working under perfusion with hyperpolarized-xenon-saturated medium. Xenon hosts enable NMR/MRI experiments with switchable contrast and selectivity for cell-associated versus unbound cages. We present MR images with 10(3) -fold sensitivity enhancement for cell-internalized, dual-mode (fluorescence/MRI) xenon hosts at low micromolar concentrations. Our results illustrate the capability of functionalized xenon to act as a highly sensitive cell tracer for MRI detection even without signal averaging. The method will bridge the challenging gap for translation to in vivo studies for the optimization of targeted biosensors and their multiplexing applications.
Collapse
Affiliation(s)
- Stefan Klippel
- ERC Project BiosensorImaging, Leibniz-Institut für Molekulare Pharmakologie (FMP), 13125 Berlin (Germany) https://www.fmp-berlin.de/schroeder; Protein Biochemistry Group, Freie Universität Berlin, 14195 Berlin (Germany)
| | | | | | | | | | | | | | | | | |
Collapse
|
11
|
Palaniappan KK, Ramirez RM, Bajaj VS, Wemmer DE, Pines A, Francis MB. Molecular imaging of cancer cells using a bacteriophage-based 129Xe NMR biosensor. Angew Chem Int Ed Engl 2013; 52:4849-53. [PMID: 23554263 DOI: 10.1002/anie.201300170] [Citation(s) in RCA: 80] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2013] [Revised: 02/09/2013] [Indexed: 02/02/2023]
|
12
|
Palaniappan KK, Ramirez RM, Bajaj VS, Wemmer DE, Pines A, Francis MB. Molecular Imaging of Cancer Cells Using a Bacteriophage-Based129Xe NMR Biosensor. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201300170] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
|
13
|
Delacour L, Kotera N, Traoré T, Garcia-Argote S, Puente C, Leteurtre F, Gravel E, Tassali N, Boutin C, Léonce E, Boulard Y, Berthault P, Rousseau B. “Clickable” Hydrosoluble PEGylated Cryptophane as a Universal Platform for129Xe Magnetic Resonance Imaging Biosensors. Chemistry 2013; 19:6089-93. [DOI: 10.1002/chem.201204218] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2012] [Revised: 01/30/2013] [Indexed: 11/08/2022]
|
14
|
Sloniec J, Schnurr M, Witte C, Resch-Genger U, Schröder L, Hennig A. Biomembrane interactions of functionalized cryptophane-A: combined fluorescence and 129Xe NMR studies of a bimodal contrast agent. Chemistry 2013; 19:3110-8. [PMID: 23319433 DOI: 10.1002/chem.201203773] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2012] [Indexed: 12/19/2022]
Abstract
Fluorescent derivatives of the (129)Xe NMR contrast agent cryptophane-A were obtained by functionalization with near infrared fluorescent dyes DY680 and DY682. The resulting conjugates were spectrally characterized, and their interaction with giant and large unilamellar vesicles of varying phospholipid composition was analyzed by fluorescence and NMR spectroscopy. In the latter, a chemical exchange saturation transfer with hyperpolarized (129)Xe (Hyper-CEST) was used to obtain sufficient sensitivity. To determine the partitioning coefficients, we developed a method based on fluorescence resonance energy transfer from Nile Red to the membrane-bound conjugates. This indicated that not only the hydrophobicity of the conjugates, but also the phospholipid composition, largely determines the membrane incorporation. Thereby, partitioning into the liquid-crystalline phase of 1,2-dipalmitoyl-sn-glycero-3-phosphocholine was most efficient. Fluorescence depth quenching and flip-flop assays suggest a perpendicular orientation of the conjugates to the membrane surface with negligible transversal diffusion, and that the fluorescent dyes reside in the interfacial area. The results serve as a basis to differentiate biomembranes by analyzing the Hyper-CEST signatures that are related to membrane fluidity, and pave the way for dissecting different contributions to the Hyper-CEST signal.
Collapse
Affiliation(s)
- Jagoda Sloniec
- Division 1.10 Biophotonics, BAM Federal Institute for Materials Research and Testing, Richard-Willstaetter-Strasse 11, 12489 Berlin, Germany
| | | | | | | | | | | |
Collapse
|
15
|
Han XN, Chen JM, Huang ZT, Zheng QY. Synthesis of Cyclotriveratrylene-Phenylacetylene Derivatives and a Photophysical Investigation of Rigid Conjugated Cyclotriveratrylene Dendrimers. European J Org Chem 2012. [DOI: 10.1002/ejoc.201201024] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
|
16
|
Kunth M, Döpfert J, Witte C, Rossella F, Schröder L. Schnelle und selektive NMR-spektroskopische Lokalisierung von eingeschlossenem Xenon durch optimales Einbeziehen der reversiblen Bindung. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201202481] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
|
17
|
Kunth M, Döpfert J, Witte C, Rossella F, Schröder L. Optimized Use of Reversible Binding for Fast and Selective NMR Localization of Caged Xenon. Angew Chem Int Ed Engl 2012; 51:8217-20. [DOI: 10.1002/anie.201202481] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2012] [Indexed: 11/10/2022]
|
18
|
Kotera N, Tassali N, Léonce E, Boutin C, Berthault P, Brotin T, Dutasta JP, Delacour L, Traoré T, Buisson DA, Taran F, Coudert S, Rousseau B. A Sensitive Zinc-Activated129Xe MRI Probe. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201109194] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
|
19
|
Kotera N, Tassali N, Léonce E, Boutin C, Berthault P, Brotin T, Dutasta JP, Delacour L, Traoré T, Buisson DA, Taran F, Coudert S, Rousseau B. A sensitive zinc-activated 129Xe MRI probe. Angew Chem Int Ed Engl 2012; 51:4100-3. [PMID: 22411775 DOI: 10.1002/anie.201109194] [Citation(s) in RCA: 66] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2011] [Indexed: 01/05/2023]
Affiliation(s)
- Naoko Kotera
- CEA Saclay, SCBM, iBiTec-S, Building 547, PC # 108, 91191 Gif sur Yvette, France
| | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
20
|
Khan NS, Perez-Aguilar JM, Kaufmann T, Hill PA, Taratula O, Lee OS, Carroll PJ, Saven JG, Dmochowski IJ. Multiple hindered rotators in a gyroscope-inspired tribenzylamine hemicryptophane. J Org Chem 2011; 76:1418-24. [PMID: 21271707 PMCID: PMC3045655 DOI: 10.1021/jo102480s] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
A gyroscope-inspired tribenzylamine hemicryptophane provides a vehicle for exploring the structure and properties of multiple p-phenylene rotators within one molecule. The hemicryptophane was synthesized in three steps in good overall yield using mild conditions. Three rotator-forming linkers were cyclized to form a rigid cyclotriveratrylene (CTV) stator framework, which was then closed with an amine. The gyroscope-like molecule was characterized by (1)H NMR and (13)C NMR spectroscopy, and the structure was solved by X-ray crystallography. The rigidity of the two-component CTV-trismethylamine stator was investigated by (1)H variable-temperature (VT) NMR experiments and molecular dynamics simulations. These techniques identified gyration of the three p-phenylene rotators on the millisecond time scale at -93 °C, with more dynamic but still hindered motion at room temperature (27 °C). The activation energy for the p-phenylene rotation was determined to be ~10 kcal mol(-1). Due to the propeller arrangement of the p-phenylenes, their rotation is hindered but not strongly correlated. The compact size, simple synthetic route, and molecular motions of this gyroscope-inspired tribenzylamine hemicryptophane make it an attractive starting point for controlling the direction and coupling of rotators within molecular systems.
Collapse
Affiliation(s)
| | | | - Tara Kaufmann
- Department of Chemistry, University of Pennsylvania, Philadelphia, 19104
| | - P. Aru Hill
- Department of Chemistry, University of Pennsylvania, Philadelphia, 19104
| | - Olena Taratula
- Department of Chemistry, University of Pennsylvania, Philadelphia, 19104
| | - One-Sun Lee
- Department of Chemistry, University of Pennsylvania, Philadelphia, 19104
| | - Patrick J. Carroll
- Department of Chemistry, University of Pennsylvania, Philadelphia, 19104
| | - Jeffery G. Saven
- Department of Chemistry, University of Pennsylvania, Philadelphia, 19104
| | - Ivan J. Dmochowski
- Department of Chemistry, University of Pennsylvania, Philadelphia, 19104
| |
Collapse
|
21
|
Berthault P, Desvaux H, Wendlinger T, Gyejacquot M, Stopin A, Brotin T, Dutasta JP, Boulard Y. Effect of pH and Counterions on the Encapsulation Properties of Xenon in Water-Soluble Cryptophanes. Chemistry 2010; 16:12941-6. [DOI: 10.1002/chem.201001170] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
22
|
Paasch S, Brunner E. Trends in solid-state NMR spectroscopy and their relevance for bioanalytics. Anal Bioanal Chem 2010; 398:2351-62. [DOI: 10.1007/s00216-010-4037-5] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2010] [Revised: 06/14/2010] [Accepted: 07/14/2010] [Indexed: 01/25/2023]
|