51
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Zhao EW, Maligal‐Ganesh R, Xiao C, Goh T, Qi Z, Pei Y, Hagelin‐Weaver HE, Huang W, Bowers CR. Silica‐Encapsulated Pt‐Sn Intermetallic Nanoparticles: A Robust Catalytic Platform for Parahydrogen‐Induced Polarization of Gases and Liquids. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201701314] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Evan W. Zhao
- Department of Chemistry and Department of Chemical Engineering University of Florida Gainesville FL 32611 USA
| | - Raghu Maligal‐Ganesh
- Department of Chemistry Iowa State University Ames Laboratory U.S. Department of Energy Ames IA 50011 USA
| | - Chaoxian Xiao
- Department of Chemistry Iowa State University Ames Laboratory U.S. Department of Energy Ames IA 50011 USA
| | - Tian‐Wei Goh
- Department of Chemistry Iowa State University Ames Laboratory U.S. Department of Energy Ames IA 50011 USA
| | - Zhiyuan Qi
- Department of Chemistry Iowa State University Ames Laboratory U.S. Department of Energy Ames IA 50011 USA
| | - Yuchen Pei
- Department of Chemistry Iowa State University Ames Laboratory U.S. Department of Energy Ames IA 50011 USA
| | - Helena E. Hagelin‐Weaver
- Department of Chemistry and Department of Chemical Engineering University of Florida Gainesville FL 32611 USA
| | - Wenyu Huang
- Department of Chemistry Iowa State University Ames Laboratory U.S. Department of Energy Ames IA 50011 USA
| | - Clifford R. Bowers
- Department of Chemistry and Department of Chemical Engineering University of Florida Gainesville FL 32611 USA
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52
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Zhao EW, Maligal‐Ganesh R, Xiao C, Goh T, Qi Z, Pei Y, Hagelin‐Weaver HE, Huang W, Bowers CR. Silica‐Encapsulated Pt‐Sn Intermetallic Nanoparticles: A Robust Catalytic Platform for Parahydrogen‐Induced Polarization of Gases and Liquids. Angew Chem Int Ed Engl 2017; 56:3925-3929. [DOI: 10.1002/anie.201701314] [Citation(s) in RCA: 56] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2017] [Indexed: 11/11/2022]
Affiliation(s)
- Evan W. Zhao
- Department of Chemistry and Department of Chemical Engineering University of Florida Gainesville FL 32611 USA
| | - Raghu Maligal‐Ganesh
- Department of Chemistry Iowa State University Ames Laboratory U.S. Department of Energy Ames IA 50011 USA
| | - Chaoxian Xiao
- Department of Chemistry Iowa State University Ames Laboratory U.S. Department of Energy Ames IA 50011 USA
| | - Tian‐Wei Goh
- Department of Chemistry Iowa State University Ames Laboratory U.S. Department of Energy Ames IA 50011 USA
| | - Zhiyuan Qi
- Department of Chemistry Iowa State University Ames Laboratory U.S. Department of Energy Ames IA 50011 USA
| | - Yuchen Pei
- Department of Chemistry Iowa State University Ames Laboratory U.S. Department of Energy Ames IA 50011 USA
| | - Helena E. Hagelin‐Weaver
- Department of Chemistry and Department of Chemical Engineering University of Florida Gainesville FL 32611 USA
| | - Wenyu Huang
- Department of Chemistry Iowa State University Ames Laboratory U.S. Department of Energy Ames IA 50011 USA
| | - Clifford R. Bowers
- Department of Chemistry and Department of Chemical Engineering University of Florida Gainesville FL 32611 USA
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53
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Coffey AM, Shchepin RV, Truong ML, Wilkens K, Pham W, Chekmenev EY. Open-Source Automated Parahydrogen Hyperpolarizer for Molecular Imaging Using (13)C Metabolic Contrast Agents. Anal Chem 2016; 88:8279-88. [PMID: 27478927 PMCID: PMC4991553 DOI: 10.1021/acs.analchem.6b02130] [Citation(s) in RCA: 81] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
![]()
An
open-source hyperpolarizer producing 13C hyperpolarized
contrast agents using parahydrogen induced polarization (PHIP) for
biomedical and other applications is presented. This PHIP hyperpolarizer
utilizes an Arduino microcontroller in conjunction with a readily
modified graphical user interface written in the open-source processing
software environment to completely control the PHIP hyperpolarization
process including remotely triggering an NMR spectrometer for efficient
production of payloads of hyperpolarized contrast agent and in situ quality assurance of the produced hyperpolarization.
Key advantages of this hyperpolarizer include: (i) use of open-source
software and hardware seamlessly allowing for replication and further
improvement as well as readily customizable integration with other
NMR spectrometers or MRI scanners (i.e., this is a multiplatform design),
(ii) relatively low cost and robustness, and (iii) in situ detection capability and complete automation. The device performance
is demonstrated by production of a dose (∼2–3 mL) of
hyperpolarized 13C-succinate with %P13C ∼ 28% and 30 mM concentration and 13C-phospholactate
at %P13C ∼ 15% and 25 mM concentration
in aqueous medium. These contrast agents are used for ultrafast molecular
imaging and spectroscopy at 4.7 and 0.0475 T. In particular, the conversion
of hyperpolarized 13C-phospholactate to 13C-lactate in vivo is used here to demonstrate the feasibility of ultrafast
multislice 13C MRI after tail vein injection of hyperpolarized 13C-phospholactate in mice.
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Affiliation(s)
| | | | | | | | | | - Eduard Y Chekmenev
- Russian Academy of Sciences , Leninskiy Prospekt 14, Moscow, 119991, Russia
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54
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Shchepin RV, Barskiy DA, Coffey AM, Goodson BM, Chekmenev EY. NMR Signal Amplification by Reversible Exchange of Sulfur-Heterocyclic Compounds Found In Petroleum. ChemistrySelect 2016; 1:2552-2555. [PMID: 27500206 DOI: 10.1002/slct.201600761] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
NMR hyperpolarization via Signal Amplification by Reversible Exchange (SABRE) was employed to investigate the feasibility of enhancing the NMR detection sensitivity of sulfur-heterocycles (specifically 2-methylthiophene and dibenzothiophenes), a family of compounds typically found in petroleum and refined petroleum products. SABRE hyperpolarization of sulfur-heterocycles (conducted in seconds) offers potential advantages of providing structural information about sulfur-containing contaminants in petroleum, thereby informing petroleum purification and refining to minimize sulfur content in refined products such as gasoline. Moreover, NMR spectroscopy sensitivity gains endowed by hyperpolarization potentially allows for performing structural assays using inexpensive, low-magnetic-field (ca. 1 T) high-resolution NMR spectrometers ideally suited for industrial applications in the field.
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Affiliation(s)
- Roman V Shchepin
- Department of Radiology, Vanderbilt University Institute of Imaging Science (VUIIS), Department of Biomedical Engineering, Vanderbilt-Ingram Cancer Center (VICC), Vanderbilt University, Nashville, TN 37232 USA
| | - Danila A Barskiy
- Department of Radiology, Vanderbilt University Institute of Imaging Science (VUIIS), Department of Biomedical Engineering, Vanderbilt-Ingram Cancer Center (VICC), Vanderbilt University, Nashville, TN 37232 USA
| | - Aaron M Coffey
- Department of Radiology, Vanderbilt University Institute of Imaging Science (VUIIS), Department of Biomedical Engineering, Vanderbilt-Ingram Cancer Center (VICC), Vanderbilt University, Nashville, TN 37232 USA
| | - Boyd M Goodson
- Southern Illinois University, Department of Chemistry and Biochemistry, Materials Technology Center, Carbondale, IL 62901 USA
| | - Eduard Y Chekmenev
- Department of Radiology, Vanderbilt University Institute of Imaging Science (VUIIS), Department of Biomedical Engineering, Vanderbilt-Ingram Cancer Center (VICC), Vanderbilt University, Nashville, TN 37232 USA.,Russian Academy of Sciences, 119991 Moscow Russia
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55
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Spannring P, Reile I, Emondts M, Schleker PPM, Hermkens NKJ, van der Zwaluw NGJ, van Weerdenburg BJA, Tinnemans P, Tessari M, Blümich B, Rutjes FPJT, Feiters MC. A New Ir-NHC Catalyst for Signal Amplification by Reversible Exchange in D2 O. Chemistry 2016; 22:9277-82. [PMID: 27258850 PMCID: PMC5089654 DOI: 10.1002/chem.201601211] [Citation(s) in RCA: 64] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2016] [Indexed: 12/14/2022]
Abstract
NMR signal amplification by reversible exchange (SABRE) has been observed for pyridine, methyl nicotinate, N-methylnicotinamide, and nicotinamide in D2 O with the new catalyst [Ir(Cl)(IDEG)(COD)] (IDEG=1,3-bis(3,4,5-tris(diethyleneglycol)benzyl)imidazole-2-ylidene). During the activation and hyperpolarization steps, exclusively D2 O was used, resulting in the first fully biocompatible SABRE system. Hyperpolarized (1) H substrate signals were observed at 42.5 MHz upon pressurizing the solution with parahydrogen at close to the Earth's magnetic field, at concentrations yielding barely detectable thermal signals. Moreover, 42-, 26-, 22-, and 9-fold enhancements were observed for nicotinamide, pyridine, methyl nicotinate, and N-methylnicotinamide, respectively, in conventional 300 MHz studies. This research opens up new opportunities in a field in which SABRE has hitherto primarily been conducted in CD3 OD. This system uses simple hardware, leaves the substrate unaltered, and shows that SABRE is potentially suitable for clinical purposes.
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Affiliation(s)
- Peter Spannring
- Institute for Molecules and Materials, Radboud University, Heyendaalseweg 135, 6525 AJ Nijmegen, The Netherlands
| | - Indrek Reile
- Institute for Molecules and Materials, Radboud University, Heyendaalseweg 135, 6525 AJ Nijmegen, The Netherlands
| | - Meike Emondts
- RWTH Aachen, Institut für Technische und Makromolekulare Chemie, Worringerweg 2, 52074 Aachen, Germany
| | - Philipp P M Schleker
- RWTH Aachen, Institut für Technische und Makromolekulare Chemie, Worringerweg 2, 52074 Aachen, Germany
| | - Niels K J Hermkens
- Institute for Molecules and Materials, Radboud University, Heyendaalseweg 135, 6525 AJ Nijmegen, The Netherlands
| | - Nick G J van der Zwaluw
- Institute for Molecules and Materials, Radboud University, Heyendaalseweg 135, 6525 AJ Nijmegen, The Netherlands
| | - Bram J A van Weerdenburg
- Institute for Molecules and Materials, Radboud University, Heyendaalseweg 135, 6525 AJ Nijmegen, The Netherlands
| | - Paul Tinnemans
- Institute for Molecules and Materials, Radboud University, Heyendaalseweg 135, 6525 AJ Nijmegen, The Netherlands
| | - Marco Tessari
- Institute for Molecules and Materials, Radboud University, Heyendaalseweg 135, 6525 AJ Nijmegen, The Netherlands
| | - Bernhard Blümich
- RWTH Aachen, Institut für Technische und Makromolekulare Chemie, Worringerweg 2, 52074 Aachen, Germany
| | - Floris P J T Rutjes
- Institute for Molecules and Materials, Radboud University, Heyendaalseweg 135, 6525 AJ Nijmegen, The Netherlands
| | - Martin C Feiters
- Institute for Molecules and Materials, Radboud University, Heyendaalseweg 135, 6525 AJ Nijmegen, The Netherlands.
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56
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Shchepin RV, Barskiy DA, Coffey AM, Theis T, Shi F, Warren WS, Goodson BM, Chekmenev EY. 15N Hyperpolarization of Imidazole- 15N 2 for Magnetic Resonance pH Sensing via SABRE-SHEATH. ACS Sens 2016; 1:640-644. [PMID: 27379344 PMCID: PMC4924567 DOI: 10.1021/acssensors.6b00231] [Citation(s) in RCA: 100] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2016] [Accepted: 04/14/2016] [Indexed: 12/17/2022]
Abstract
![]()
15N nuclear spins of imidazole-15N2 were
hyperpolarized using NMR signal amplification by reversible
exchange in shield enables alignment transfer to heteronuclei (SABRE-SHEATH).
A 15N NMR signal enhancement of ∼2000-fold at 9.4
T is reported using parahydrogen gas (∼50% para-) and ∼0.1
M imidazole-15N2 in methanol:aqueous buffer
(∼1:1). Proton binding to a 15N site of imidazole
occurs at physiological pH (pKa ∼
7.0), and the binding event changes the 15N isotropic chemical
shift by ∼30 ppm. These properties are ideal for in vivo pH
sensing. Additionally, imidazoles have low toxicity and are readily
incorporated into a wide range of biomolecules. 15N-Imidazole
SABRE-SHEATH hyperpolarization potentially enables pH sensing on scales
ranging from peptide and protein molecules to living organisms.
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Affiliation(s)
| | | | | | - Thomas Theis
- Department
of Chemistry, Duke University, Durham, North Carolina 27708, United States
| | | | - Warren S. Warren
- Department
of Chemistry, Duke University, Durham, North Carolina 27708, United States
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57
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Barskiy DA, Shchepin RV, Coffey AM, Theis T, Warren WS, Goodson BM, Chekmenev EY. Over 20% (15)N Hyperpolarization in Under One Minute for Metronidazole, an Antibiotic and Hypoxia Probe. J Am Chem Soc 2016; 138:8080-3. [PMID: 27321159 PMCID: PMC4937835 DOI: 10.1021/jacs.6b04784] [Citation(s) in RCA: 111] [Impact Index Per Article: 13.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Direct NMR hyperpolarization of naturally abundant (15)N sites in metronidazole is demonstrated using SABRE-SHEATH (Signal Amplification by Reversible Exchange in SHield Enables Alignment Transfer to Heteronuclei). In only a few tens of seconds, nuclear spin polarization P(15)N of up to ∼24% is achieved using parahydrogen with 80% para fraction corresponding to P(15)N ≈ 32% if ∼100% parahydrogen were employed (which would translate to a signal enhancement of ∼0.1-million-fold at 9.4 T). In addition to this demonstration on the directly binding (15)N site (using J(2)H-(15)N), we also hyperpolarized more distant (15)N sites in metronidazole using longer-range spin-spin couplings (J(4)H-(15)N and J(5)H-(15)N). Taken together, these results significantly expand the range of molecular structures and sites amenable to hyperpolarization via low-cost parahydrogen-based methods. In particular, hyperpolarized nitroimidazole and its derivatives have powerful potential applications such as direct in vivo imaging of mechanisms of action or hypoxia sensing.
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Affiliation(s)
- Danila A Barskiy
- Department of Radiology, Vanderbilt University Institute of Imaging Science, Vanderbilt University Medical Center , Nashville, Tennessee 37232, United States
| | - Roman V Shchepin
- Department of Radiology, Vanderbilt University Institute of Imaging Science, Vanderbilt University Medical Center , Nashville, Tennessee 37232, United States
| | - Aaron M Coffey
- Department of Radiology, Vanderbilt University Institute of Imaging Science, Vanderbilt University Medical Center , Nashville, Tennessee 37232, United States
| | - Thomas Theis
- Department of Chemistry, Duke University , Durham, North Carolina 27708, United States
| | - Warren S Warren
- Department of Chemistry, Duke University , Durham, North Carolina 27708, United States
| | - Boyd M Goodson
- Department of Chemistry and Biochemistry and Materials Technology Center, Southern Illinois University , Carbondale, Illinois 62901, United States
| | - Eduard Y Chekmenev
- Department of Radiology, Vanderbilt University Institute of Imaging Science, Vanderbilt University Medical Center , Nashville, Tennessee 37232, United States.,Department of Biomedical Engineering, Vanderbilt-Ingram Cancer Center, Vanderbilt University , Nashville, Tennessee 37232, United States.,Russian Academy of Sciences , Leninskiy Prospekt 14, Moscow 119991, Russia
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58
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Shi F, He P, Best QA, Groome K, Truong M, Coffey AM, Zimay G, Shchepin RV, Waddell KW, Chekmenev EY, Goodson BM. Aqueous NMR Signal Enhancement by Reversible Exchange in a Single Step Using Water-Soluble Catalysts. THE JOURNAL OF PHYSICAL CHEMISTRY. C, NANOMATERIALS AND INTERFACES 2016; 120:12149-12156. [PMID: 27350846 PMCID: PMC4918635 DOI: 10.1021/acs.jpcc.6b04484] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/04/2016] [Revised: 05/11/2016] [Indexed: 05/26/2023]
Abstract
Two synthetic strategies are investigated for the preparation of water-soluble iridium-based catalysts for NMR signal amplification by reversible exchange (SABRE). In one approach, PEGylation of a variant N-heterocyclic carbene provided a novel catalyst with excellent water solubility. However, while SABRE-active in ethanol solutions, the catalyst lost activity in >50% water. In a second approach, synthesis of a novel di-iridium complex precursor where the cyclooctadiene (COD) rings have been replaced by CODDA (1,2-dihydroxy-3,7-cyclooctadiene) leads to the creation of a catalyst [IrCl(CODDA)IMes] that can be dissolved and activated in water-enabling aqueous SABRE in a single step, without need for either an organic cosolvent or solvent removal followed by aqueous reconstitution. The potential utility of the CODDA catalyst for aqueous SABRE is demonstrated with the ∼(-)32-fold enhancement of 1H signals of pyridine in water with only 1 atm of parahydrogen.
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Affiliation(s)
- Fan Shi
- Department
of Chemistry and Biochemistry, and Materials Technology Center, Southern Illinois University, Carbondale, Illinois 62901, United States
| | - Ping He
- Department
of Chemistry and Biochemistry, and Materials Technology Center, Southern Illinois University, Carbondale, Illinois 62901, United States
| | - Quinn A. Best
- Department
of Chemistry and Biochemistry, and Materials Technology Center, Southern Illinois University, Carbondale, Illinois 62901, United States
| | - Kirsten Groome
- Department
of Chemistry and Biochemistry, and Materials Technology Center, Southern Illinois University, Carbondale, Illinois 62901, United States
| | - Milton
L. Truong
- Department
of Radiology, Vanderbilt University Institute
of Imaging Science, Nashville, Tennessee 37232, United States
| | - Aaron M. Coffey
- Department
of Radiology, Vanderbilt University Institute
of Imaging Science, Nashville, Tennessee 37232, United States
| | - Greg Zimay
- Department
of Chemistry and Biochemistry, and Materials Technology Center, Southern Illinois University, Carbondale, Illinois 62901, United States
| | - Roman V. Shchepin
- Department
of Radiology, Vanderbilt University Institute
of Imaging Science, Nashville, Tennessee 37232, United States
| | - Kevin W. Waddell
- Department
of Radiology, Vanderbilt University Institute
of Imaging Science, Nashville, Tennessee 37232, United States
| | - Eduard Y. Chekmenev
- Department
of Radiology, Vanderbilt University Institute
of Imaging Science, Nashville, Tennessee 37232, United States
- Department
of Biomedical Engineering, Vanderbilt University, Nashville, Tennessee 37235, United States
- Vanderbilt-Ingram
Cancer Center, Nashville, Tennessee 37232, United States
- Russian
Academy of Sciences, Leninskiy Prospekt 14, Moscow, 119991, Russia
| | - Boyd M. Goodson
- Department
of Chemistry and Biochemistry, and Materials Technology Center, Southern Illinois University, Carbondale, Illinois 62901, United States
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