1
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Huynh PT, Vu HD, Ryu J, Kim HS, Jung H, Youn SW. Gadolinium-Cyclic 1,4,7,10-Tetraazacyclododecane-1,4,7,10-Tetraacetic Acid-Click-Sulfonyl Fluoride for Probing Serine Protease Activity in Magnetic Resonance Imaging. Molecules 2023; 28:molecules28083538. [PMID: 37110769 PMCID: PMC10141219 DOI: 10.3390/molecules28083538] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2023] [Revised: 04/11/2023] [Accepted: 04/13/2023] [Indexed: 04/29/2023] Open
Abstract
Serine protease is linked to a wide range of diseases, prompting the development of robust, selective, and sensitive protease assays and sensing methods. However, the clinical needs for serine protease activity imaging have not yet been met, and the efficient in vivo detection and imaging of serine protease remain challenging. Here, we report the development of the gadolinium-cyclic 1,4,7,10-tetraazacyclododecane-1,4,7,10-tetraacetic acid-click-Sulfonyl Fluoride (Gd-DOTA-click-SF) MRI contrast agent targeting serine protease. The HR-FAB mass spectrum confirmed the successful formation of our designed chelate. The molar longitudinal relaxivity (r1) of the Gd-DOTA-click-SF probe (r1 = 6.82 mM-1 s-1) was significantly higher than that of Dotarem (r1 = 4.63 mM-1 s-1), in the range of 0.01-0.64 mM at 9.4 T. The in vitro cellular study and the transmetallation kinetics study showed that the safety and stability of this probe are comparable to those of conventional Dotarem. Ex vivo abdominal aortic aneurysm (AAA) MRI revealed that this probe has a contrast-agent-to-noise ratio (CNR) that is approximately 51 ± 23 times greater than that of Dotarem. This study of superior visualization of AAA suggests that it has the potential to detect elastase in vivo and supports the feasibility of probing serine protease activity in T1-weighted MRI.
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Affiliation(s)
- Phuong Tu Huynh
- Department of Radiology, Daegu Catholic University School of Medicine, 3056-6, Daemyung-4-Dong, Nam-gu, Daegu 42472, Republic of Korea
| | - Huy Duc Vu
- Department of Radiology, Daegu Catholic University School of Medicine, 3056-6, Daemyung-4-Dong, Nam-gu, Daegu 42472, Republic of Korea
| | - Junghwa Ryu
- Department of Radiology, Daegu Catholic University School of Medicine, 3056-6, Daemyung-4-Dong, Nam-gu, Daegu 42472, Republic of Korea
| | - Hee Su Kim
- Korea Basic Science Institute (Daegu Center), Kyungpook University, 80, Daehak-ro, Buk-gu, Daegu 41566, Republic of Korea
| | - Hoesu Jung
- Preclinical Research Center, Daegu-Gyeongbuk Medical Innovation Foundation (KMEDIhub), 88, Dongnae-ro, Dong-gu, Daegu 41061, Republic of Korea
| | - Sung Won Youn
- Department of Radiology, Daegu Catholic University School of Medicine, 3056-6, Daemyung-4-Dong, Nam-gu, Daegu 42472, Republic of Korea
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2
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Li XZ, Tian CB, Sun QF. Coordination-Directed Self-Assembly of Functional Polynuclear Lanthanide Supramolecular Architectures. Chem Rev 2022; 122:6374-6458. [PMID: 35133796 DOI: 10.1021/acs.chemrev.1c00602] [Citation(s) in RCA: 68] [Impact Index Per Article: 34.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Lanthanide supramolecular chemistry is a fast growing and intriguing research field due to the unique photophysical, magnetic, and coordination properties of lanthanide ions (LnIII). Compared with the intensively investigated mononuclear Ln-complexes, polymetallic lanthanide supramolecular assemblies offer more structural superiority and functional advantages. In recent decades, significant progress has been made in polynuclear lanthanide supramolecules, varying from structural evolution to luminescent and magnetic functional materials. This review summarizes the design principles in ligand-induced coordination-driven self-assembly of polynuclear Ln-structures and intends to offer guidance for the construction of more elegant Ln-based architectures and optimization of their functional performances. Design principles concerning the water solubility and chirality of the lanthanide-organic assemblies that are vital in extending their applications are emphasized. The strategies for improving the luminescent properties and the applications in up-conversion, host-guest chemistry, luminescent sensing, and catalysis have been summarized. Magnetic materials based on supramolecular assembled lanthanide architectures are given in an individual section and are classified based on their structural features. Challenges remaining and perspective directions in this field are also briefly discussed.
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Affiliation(s)
- Xiao-Zhen Li
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, People's Republic of China
| | - Chong-Bin Tian
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, People's Republic of China
| | - Qing-Fu Sun
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, People's Republic of China
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3
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Perry HL, Yoon IC, Chabloz NG, Molisso S, Stasiuk GJ, Botnar RM, Wilton-Ely JDET. Metallostar Assemblies Based on Dithiocarbamates for Use as MRI Contrast Agents. Inorg Chem 2020; 59:10813-10823. [PMID: 32677827 DOI: 10.1021/acs.inorgchem.0c01318] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Two different octadentate gadolinium chelates based on DO3A and DOTAGA chelates (hydration number q = 1) have been used to prepare a series of bi-, tri-, and tetrametallic d-f mixed-metal complexes. The piperazine-based dithiocarbamate linker ensures that rotation of the gadolinium chelates is restricted, leading to enhanced relaxivity (r1) values, which increase with the overall mass and number of gadolinium units. The r1 value (at 10 MHz, 25 °C) per gadolinium unit rises from 5.0 mM-1 s-1 for the Gd-DO3A-NH2 monogadolinium chelate to 9.2 mM-1 s-1 in a trigadolinium complex with a ruthenium(III) core. Using a 1.5 T clinical scanner operating at 63.87 MHz (25 °C), an 86% increase in the relaxivity per gadolinium unit is observed for this multimetallic compound compared to clinically approved Dotarem. The gadolinium complexes based on the DOTAGA chelate also performed well at 63.87 MHz, with a relaxivity value of 9.5 mM-1 s-1 per gadolinium unit being observed for the trigadolinium d-f mixed-metal complex with a ruthenium(III) core. The versatility of dithiocarbamate coordination chemistry thus provides access to a wide range of d-f hybrids with potential for use as high-performance MRI contrast agents.
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Affiliation(s)
- Hannah L Perry
- Department of Chemistry, Imperial College London, Molecular Sciences Research Hub, White City Campus, London W12 0BZ, U.K.,School of Biomedical Engineering and Imaging Sciences, King's College London, St. Thomas' Hospital, London SE1 7EH, U.K
| | - Il-Chul Yoon
- Department of Chemistry, Imperial College London, Molecular Sciences Research Hub, White City Campus, London W12 0BZ, U.K
| | - Nicolas G Chabloz
- Department of Chemistry, Imperial College London, Molecular Sciences Research Hub, White City Campus, London W12 0BZ, U.K
| | - Susannah Molisso
- Department of Chemistry, Imperial College London, Molecular Sciences Research Hub, White City Campus, London W12 0BZ, U.K
| | - Graeme J Stasiuk
- School of Biomedical Engineering and Imaging Sciences, King's College London, St. Thomas' Hospital, London SE1 7EH, U.K
| | - René M Botnar
- School of Biomedical Engineering and Imaging Sciences, King's College London, St. Thomas' Hospital, London SE1 7EH, U.K
| | - James D E T Wilton-Ely
- Department of Chemistry, Imperial College London, Molecular Sciences Research Hub, White City Campus, London W12 0BZ, U.K
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4
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Opina ACL, Strickland M, Lee YS, Tjandra N, Swenson RE, Vasalatiy O. Comparison of Solution Properties of Polymethylated DOTA-like Lanthanide Complexes with Opposite Chirality of the Pendant Arms. Inorg Chem 2019; 58:15788-15800. [PMID: 31713422 DOI: 10.1021/acs.inorgchem.9b02049] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Polymethylated lanthanide 4S4R-M4DOTMA complexes, bearing the ring methyl groups oriented in the SSSS position and the arm methyl groups in the RRRR configuration, exist exclusively as the SAP [Λ(δδδδ)] isomer in solution throughout the lanthanide series. This observation is in contrast to Ln-8S-M4DOTMA, which was recently reported to adopt the SAP [Λ(δδδδ)] isomer in the early lanthanides, while the late lanthanides adopt the TSAP [Δ(δδδδ)] isomer. The methyl groups on the ring and the arm are both oriented in the SSSS configuration for Ln-8S-M4DOTMA ( Dalton Trans. 2016 , 45 , 4673 - 4687 , DOI: 10.1039/C5DT03210E ). Quantum chemical calculations for Pr- and Yb-4S4R-M4DOTMA indicate that the SAP isomer is significantly more stable. The luminescence profiles of Eu-8S-M4DOTMA and Eu-4S4R-M4DOTMA showed similar profiles signifying identical coordination environments. The hydration state, q, of the Eu(III) complexes was q = 0.91-0.95, while Tb-8S-M4DOTMA had q = 0.86. A much lower q value was obtained for Tb-4S4R-M4DOTMA (q = 0.67), which indicates an elongation of the Ln-Ow bond. At 400 MHz, the relaxivity of Gd-8S-M4DOTMA is 5.1 ± 0.1 mM-1 s-1 and 3.9 ± 0.1 mM-1 s-1 at 25 and 37 °C, respectively, whereas the relaxivity of Gd-4S4R-M4DOTMA is 4.6 ± 0.1 mM-1 s-1 at 25 °C and 3.6 ± 0.1 mM-1 s-1 at 37 °C. At 45 MHz, the relaxivity of Gd-8S-M4DOTMA is 5.4 ± 0.1 mM-1 s-1, and the relaxivity of Gd-4S4R-M4DOTMA is 4.5 ± 0.1 mM-1 s-1 at 25 °C. The temperature dependence of the 17O NMR transverse relaxation rate of the Gd complexes revealed a 7-fold increase in the bound water residence lifetime of Gd-8S-M4DOTMA (1/kex = τM = 9.0 ± 0.5 ns and 1/kex = τM = 60 ± 3 ns). The Pr(III) complex of 8S-M4DOTMA crystallized as TSAP isomer with an apical water. The presence of the apical water for the TSAP of Pr-8S-M4DOTMA was further confirmed with the observation that the fluoride ion replaces the bound water from the TSAP isomer of Pr-8S-M4DOTMA. This was shown by the disappearance of the TSAP peaks and appearance of a new set of less shifted resonances, which exchange with the SAP isomer as confirmed by NMR exchange spectroscopy (EXSY).
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Affiliation(s)
- Ana Christina L Opina
- Imaging Probe Development Center, National Heart, Lung, and Blood Institute , National Institutes of Health , Rockville , Maryland 20850 , United States
| | | | | | | | - Rolf E Swenson
- Imaging Probe Development Center, National Heart, Lung, and Blood Institute , National Institutes of Health , Rockville , Maryland 20850 , United States
| | - Olga Vasalatiy
- Imaging Probe Development Center, National Heart, Lung, and Blood Institute , National Institutes of Health , Rockville , Maryland 20850 , United States
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5
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Pujales‐Paradela R, Savić T, Esteban‐Gómez D, Angelovski G, Carniato F, Botta M, Platas‐Iglesias C. Gadolinium(III)‐Based Dual1H/19F Magnetic Resonance Imaging Probes. Chemistry 2019; 25:4782-4792. [DOI: 10.1002/chem.201806192] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2018] [Indexed: 12/28/2022]
Affiliation(s)
- Rosa Pujales‐Paradela
- Centro de Investigacións Científicas Avanzadas (CICA) and Departamento, de QuímicaFacultade de CienciasUniversidade da Coruña 15071 A Coruña Galicia Spain
| | - Tanja Savić
- MR Neuroimaging AgentsMax Planck Institute for Biological Cybernetics Tübingen Germany
| | - David Esteban‐Gómez
- Centro de Investigacións Científicas Avanzadas (CICA) and Departamento, de QuímicaFacultade de CienciasUniversidade da Coruña 15071 A Coruña Galicia Spain
| | - Goran Angelovski
- MR Neuroimaging AgentsMax Planck Institute for Biological Cybernetics Tübingen Germany
| | - Fabio Carniato
- Dipartimento di Scienze e Innovazione TecnologicaUniversità del Piemonte Orientale “A. Avogadro” Viale T. Michel 11 15121 Alessandria Italy
| | - Mauro Botta
- Dipartimento di Scienze e Innovazione TecnologicaUniversità del Piemonte Orientale “A. Avogadro” Viale T. Michel 11 15121 Alessandria Italy
| | - Carlos Platas‐Iglesias
- Centro de Investigacións Científicas Avanzadas (CICA) and Departamento, de QuímicaFacultade de CienciasUniversidade da Coruña 15071 A Coruña Galicia Spain
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6
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Wahsner J, Gale EM, Rodríguez-Rodríguez A, Caravan P. Chemistry of MRI Contrast Agents: Current Challenges and New Frontiers. Chem Rev 2019; 119:957-1057. [PMID: 30350585 PMCID: PMC6516866 DOI: 10.1021/acs.chemrev.8b00363] [Citation(s) in RCA: 813] [Impact Index Per Article: 162.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Tens of millions of contrast-enhanced magnetic resonance imaging (MRI) exams are performed annually around the world. The contrast agents, which improve diagnostic accuracy, are almost exclusively small, hydrophilic gadolinium(III) based chelates. In recent years concerns have arisen surrounding the long-term safety of these compounds, and this has spurred research into alternatives. There has also been a push to develop new molecularly targeted contrast agents or agents that can sense pathological changes in the local environment. This comprehensive review describes the state of the art of clinically approved contrast agents, their mechanism of action, and factors influencing their safety. From there we describe different mechanisms of generating MR image contrast such as relaxation, chemical exchange saturation transfer, and direct detection and the types of molecules that are effective for these purposes. Next we describe efforts to make safer contrast agents either by increasing relaxivity, increasing resistance to metal ion release, or by moving to gadolinium(III)-free alternatives. Finally we survey approaches to make contrast agents more specific for pathology either by direct biochemical targeting or by the design of responsive or activatable contrast agents.
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Affiliation(s)
- Jessica Wahsner
- Athinoula A. Martinos Center for Biomedical Imaging and the Institute for Innovation in Imaging, Department of Radiology, Massachusetts General Hospital and Harvard Medical School, Charlestown, MA 02129, USA
| | - Eric M. Gale
- Athinoula A. Martinos Center for Biomedical Imaging and the Institute for Innovation in Imaging, Department of Radiology, Massachusetts General Hospital and Harvard Medical School, Charlestown, MA 02129, USA
| | - Aurora Rodríguez-Rodríguez
- Athinoula A. Martinos Center for Biomedical Imaging and the Institute for Innovation in Imaging, Department of Radiology, Massachusetts General Hospital and Harvard Medical School, Charlestown, MA 02129, USA
| | - Peter Caravan
- Athinoula A. Martinos Center for Biomedical Imaging and the Institute for Innovation in Imaging, Department of Radiology, Massachusetts General Hospital and Harvard Medical School, Charlestown, MA 02129, USA
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7
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Phukan B, Malikidogo KP, Bonnet CS, Tóth É, Mondal S, Mukherjee C. A Bishydrated, Eight–Coordinate Gd(III) Complex with Very Fast Water Exchange: Synthesis, Characterization, and Phantom MR Imaging. ChemistrySelect 2018. [DOI: 10.1002/slct.201801629] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Bedika Phukan
- Department of ChemistryIndian Institute of Technology Guwahati, Guwahati 781039, Assam India
| | - Kyangwi P. Malikidogo
- Centre de Biophysique MoléculaireCNRS, UPR 4301Université d'Orléans, rue Charles Sadron, 45071 Orléans, France
| | - Célia S. Bonnet
- Centre de Biophysique MoléculaireCNRS, UPR 4301Université d'Orléans, rue Charles Sadron, 45071 Orléans, France
| | - Éva Tóth
- Centre de Biophysique MoléculaireCNRS, UPR 4301Université d'Orléans, rue Charles Sadron, 45071 Orléans, France
| | - Samsuzzoha Mondal
- Department of Chemical SciencesTata Institute of Fundamental Research 1 Homi Bhabha Road, Colaba, Mumbai 400005 India
| | - Chandan Mukherjee
- Department of ChemistryIndian Institute of Technology Guwahati, Guwahati 781039, Assam India
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8
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Synthesis of dendronized polymeric chelating agents using hydrazone ligation strategy. Eur Polym J 2017. [DOI: 10.1016/j.eurpolymj.2017.04.040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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9
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Gündüz S, Savić T, Toljić Đ, Angelovski G. Preparation and In Vitro Characterization of Dendrimer-based Contrast Agents for Magnetic Resonance Imaging. J Vis Exp 2016:54776. [PMID: 28060285 PMCID: PMC5226353 DOI: 10.3791/54776] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Paramagnetic complexes of gadolinium(III) with acyclic or macrocyclic chelates are the most commonly used contrast agents (CAs) for magnetic resonance imaging (MRI). Their purpose is to enhance the relaxation rate of water protons in tissue, thus increasing the MR image contrast and the specificity of the MRI measurements. Current clinically approved contrast agents are low molecular weight molecules that are rapidly cleared from the body. The use of dendrimers as carriers of paramagnetic chelators can play an important role in the future development of more efficient MRI contrast agents. Specifically, the increase in local concentration of the paramagnetic species results in a higher signal contrast. Furthermore, this CA provides a longer tissue retention time due to its high molecular weight and size. Here, we demonstrate a convenient procedure for the preparation of macromolecular MRI contrast agents based on poly(amidoamine) (PAMAM) dendrimers with monomacrocyclic DOTA-type chelators (DOTA - 1,4,7,10-tetraazacyclododecane-1,4,7,10-tetraacetate). The chelating unit was appended by exploiting the reactivity of the isothiocyanate (NCS) group towards the amine surface groups of the PAMAM dendrimer to form thiourea bridges. Dendrimeric products were purified and analyzed by means of nuclear magnetic resonance spectroscopy, mass spectrometry, and elemental analysis. Finally, high resolution MR images were recorded and the signal contrasts obtained from the prepared dendrimeric and the commercially available monomeric agents were compared.
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Affiliation(s)
- Serhat Gündüz
- MR Neuroimaging Agents, Max Planck Institute for Biological Cybernetics
| | - Tanja Savić
- MR Neuroimaging Agents, Max Planck Institute for Biological Cybernetics
| | - Đorđe Toljić
- MR Neuroimaging Agents, Max Planck Institute for Biological Cybernetics
| | - Goran Angelovski
- MR Neuroimaging Agents, Max Planck Institute for Biological Cybernetics;
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10
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Sour A, Jenni S, Ortí-Suárez A, Schmitt J, Heitz V, Bolze F, Loureiro de Sousa P, Po C, Bonnet CS, Pallier A, Tóth É, Ventura B. Four Gadolinium(III) Complexes Appended to a Porphyrin: A Water-Soluble Molecular Theranostic Agent with Remarkable Relaxivity Suited for MRI Tracking of the Photosensitizer. Inorg Chem 2016; 55:4545-54. [DOI: 10.1021/acs.inorgchem.6b00381] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Angélique Sour
- Laboratoire de Synthèse
des Assemblages Moléculaires Multifonctionnels, Institut de
Chimie de Strasbourg, CNRS/UMR 7177, Université de Strasbourg, 4 rue
Blaise Pascal, 67000 Strasbourg, France
| | - Sébastien Jenni
- Laboratoire de Synthèse
des Assemblages Moléculaires Multifonctionnels, Institut de
Chimie de Strasbourg, CNRS/UMR 7177, Université de Strasbourg, 4 rue
Blaise Pascal, 67000 Strasbourg, France
| | - Ana Ortí-Suárez
- Laboratoire de Synthèse
des Assemblages Moléculaires Multifonctionnels, Institut de
Chimie de Strasbourg, CNRS/UMR 7177, Université de Strasbourg, 4 rue
Blaise Pascal, 67000 Strasbourg, France
| | - Julie Schmitt
- Laboratoire de Synthèse
des Assemblages Moléculaires Multifonctionnels, Institut de
Chimie de Strasbourg, CNRS/UMR 7177, Université de Strasbourg, 4 rue
Blaise Pascal, 67000 Strasbourg, France
| | - Valérie Heitz
- Laboratoire de Synthèse
des Assemblages Moléculaires Multifonctionnels, Institut de
Chimie de Strasbourg, CNRS/UMR 7177, Université de Strasbourg, 4 rue
Blaise Pascal, 67000 Strasbourg, France
| | - Frédéric Bolze
- CAMB, UMR 7199,
UdS/CNRS, Faculté de Pharmacie, Université de Strasbourg, 74 route
du Rhin, 67401 Illkirch, France
| | - Paulo Loureiro de Sousa
- CNRS, ICube, FMTS, Institut de Physique
Biologique, Faculté de Médecine, Université de Strasbourg, 4 rue Kirschleger, 67085 Strasbourg Cedex, France
| | - Chrystelle Po
- CNRS, ICube, FMTS, Institut de Physique
Biologique, Faculté de Médecine, Université de Strasbourg, 4 rue Kirschleger, 67085 Strasbourg Cedex, France
| | - Célia S. Bonnet
- Centre
de Biophysique Moléculaire, CNRS UPR 4301, Université d’Orléans, rue Charles Sadron, CS 80054, 45071 Orléans Cedex 2, France
| | - Agnès Pallier
- Centre
de Biophysique Moléculaire, CNRS UPR 4301, Université d’Orléans, rue Charles Sadron, CS 80054, 45071 Orléans Cedex 2, France
| | - Éva Tóth
- Centre
de Biophysique Moléculaire, CNRS UPR 4301, Université d’Orléans, rue Charles Sadron, CS 80054, 45071 Orléans Cedex 2, France
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11
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Burov SV, Polyanichko KV, Chelushkin PS, Dorosh MY, Gavrilova II, Dobrodumov AV, Pokhvoshchev YV, Krasikov VD, Panarin EF. Contrast agents for magnetic resonance imaging based on dendronized N-vinylpyrrolidone polymers. DOKLADY CHEMISTRY 2016. [DOI: 10.1134/s0012500816010055] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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12
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Gadolinium(III)-DOTA Complex Functionalized with BODIPY as a Potential Bimodal Contrast Agent for MRI and Optical Imaging. INORGANICS 2015. [DOI: 10.3390/inorganics3040516] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023] Open
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13
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Regueiro-Figueroa M, Gündüz S, Patinec V, Logothetis NK, Esteban-Gómez D, Tripier R, Angelovski G, Platas-Iglesias C. Gd(3+)-Based Magnetic Resonance Imaging Contrast Agent Responsive to Zn(2+). Inorg Chem 2015; 54:10342-50. [PMID: 26468992 DOI: 10.1021/acs.inorgchem.5b01719] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
We report the heteroditopic ligand H5L, which contains a DO3A unit for Gd(3+) complexation connected to an NO2A moiety through a N-propylacetamide linker. The synthesis of the ligand followed a convergent route that involved the preparation of 1,4-bis(tert-butoxycarbonylmethyl)-1,4,7-triazacyclononane following the orthoamide strategy. The luminescence lifetimes of the Tb((5)D4) excited state measured for the TbL complex point to the absence of coordinated water molecules. Density functional theory calculations and (1)H NMR studies indicate that the EuL complex presents a square antiprismatic coordination in aqueous solution, where eight coordination is provided by the seven donor atoms of the DO3A unit and the amide oxygen atom of the N-propylacetamide linker. Addition of Zn(2+) to aqueous solutions of the TbL complex provokes a decrease of the emission intensity as the emission lifetime becomes shorter, which is a consequence of the coordination of a water molecule to the Tb(3+) ion upon Zn(2+) binding to the NO2A moiety. The relaxivity of the GdL complex recorded at 7 T (25 °C) increases by almost 150% in the presence of 1 equiv of Zn(2+), while Ca(2+) and Mg(2+) induced very small relaxivity changes. In vitro magnetic resonance imaging experiments confirmed the ability of GdL to provide response to the presence of Zn(2+).
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Affiliation(s)
- Martín Regueiro-Figueroa
- Grupo QUICOOR, Centro de Investigaciones Científicas Avanzadas (CICA) and Departamento de Química Fundamental, Universidade da Coruña , Campus da Zapateira, Rúa da Fraga 10, 15008 A Coruña, Spain
| | - Serhat Gündüz
- MR Neuroimaging Agents, Max Planck Institute for Biological Cybernetics , Spemannstr. 41, 72076 Tübingen, Germany
| | - Véronique Patinec
- UFR des Sciences et Techniques, Université de Bretagne Occidentale, UMR-CNRS 6521 , 6 avenue Victor le Gorgeu, C.S. 93837, 29238 BREST Cedex 3, France
| | - Nikos K Logothetis
- Physiology of Cognitive Processes, Max Planck Institute for Biological Cybernetics , Tübingen, Germany.,Department of Imaging Science and Biomedical Engineering, University of Manchester , Manchester, U.K
| | - David Esteban-Gómez
- Grupo QUICOOR, Centro de Investigaciones Científicas Avanzadas (CICA) and Departamento de Química Fundamental, Universidade da Coruña , Campus da Zapateira, Rúa da Fraga 10, 15008 A Coruña, Spain
| | - Raphaël Tripier
- UFR des Sciences et Techniques, Université de Bretagne Occidentale, UMR-CNRS 6521 , 6 avenue Victor le Gorgeu, C.S. 93837, 29238 BREST Cedex 3, France
| | - Goran Angelovski
- MR Neuroimaging Agents, Max Planck Institute for Biological Cybernetics , Spemannstr. 41, 72076 Tübingen, Germany
| | - Carlos Platas-Iglesias
- Grupo QUICOOR, Centro de Investigaciones Científicas Avanzadas (CICA) and Departamento de Química Fundamental, Universidade da Coruña , Campus da Zapateira, Rúa da Fraga 10, 15008 A Coruña, Spain
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14
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Gündüz S, Nitta N, Vibhute S, Shibata S, Mayer ME, Logothetis NK, Aoki I, Angelovski G. Dendrimeric calcium-responsive MRI contrast agents with slow in vivo diffusion. Chem Commun (Camb) 2015; 51:2782-5. [PMID: 25383973 DOI: 10.1039/c4cc07540d] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
We report a methodology which enables the preparation of dendrimeric contrast agents sensitive to Ca(2+) when starting from the monomeric analogue. The Ca-triggered longitudinal relaxivity response of these agents is not compromised by undertaking synthetic transformations, despite structural changes. The in vivo MRI studies in the rat cerebral cortex indicate that diffusion properties of dendrimeric contrast agents have great advantages as compared to their monomeric equivalents.
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Affiliation(s)
- Serhat Gündüz
- MR Neuroimaging Agents Group, Max Planck Institute for Biological Cybernetics, 72076 Tübingen, Germany.
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15
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Boulay A, Deraeve C, Vander Elst L, Leygue N, Maury O, Laurent S, Muller RN, Mestre-Voegtlé B, Picard C. Terpyridine-Based Heteroditopic Ligand for RuIILn3III Metallostar Architectures (Ln = Gd, Eu, Nd, Yb) with MRI/Optical or Dual-Optical Responses. Inorg Chem 2015; 54:1414-25. [DOI: 10.1021/ic502342x] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Alexandre Boulay
- CNRS, Laboratoire de Synthèse et Physico-Chimie de Molécules d’Intérêt Biologique, SPCMIB, UMR-5068, 118 Route de Narbonne, F-31062 Toulouse cedex 9, France
- Université de Toulouse, UPS, Laboratoire de Synthèse et Physico-Chimie de Molécules d’Intérêt Biologique, SPCMIB, 118 route de Narbonne, F-31062 Toulouse cedex 9, France
| | - Céline Deraeve
- CNRS, Laboratoire de Synthèse et Physico-Chimie de Molécules d’Intérêt Biologique, SPCMIB, UMR-5068, 118 Route de Narbonne, F-31062 Toulouse cedex 9, France
- Université de Toulouse, UPS, Laboratoire de Synthèse et Physico-Chimie de Molécules d’Intérêt Biologique, SPCMIB, 118 route de Narbonne, F-31062 Toulouse cedex 9, France
| | - Luce Vander Elst
- NMR
and Molecular Imaging Laboratory, Department of General, Organic and
Biomedical Chemistry, University of Mons, 23 Place du Parc, B-7000 Mons, Belgium
- Center for Microscopy and Molecular Imaging (CMMI), Rue Adrienne Bolland, 8, B-6041 Gosselies, Belgium
| | - Nadine Leygue
- CNRS, Laboratoire de Synthèse et Physico-Chimie de Molécules d’Intérêt Biologique, SPCMIB, UMR-5068, 118 Route de Narbonne, F-31062 Toulouse cedex 9, France
- Université de Toulouse, UPS, Laboratoire de Synthèse et Physico-Chimie de Molécules d’Intérêt Biologique, SPCMIB, 118 route de Narbonne, F-31062 Toulouse cedex 9, France
| | - Olivier Maury
- Université de Lyon 1, Laboratoire de Chimie de l’ENS Lyon, CNRS UMR 5182, 46 allée d’Italie, 69364 Lyon, France
| | - Sophie Laurent
- NMR
and Molecular Imaging Laboratory, Department of General, Organic and
Biomedical Chemistry, University of Mons, 23 Place du Parc, B-7000 Mons, Belgium
- Center for Microscopy and Molecular Imaging (CMMI), Rue Adrienne Bolland, 8, B-6041 Gosselies, Belgium
| | - Robert N. Muller
- NMR
and Molecular Imaging Laboratory, Department of General, Organic and
Biomedical Chemistry, University of Mons, 23 Place du Parc, B-7000 Mons, Belgium
- Center for Microscopy and Molecular Imaging (CMMI), Rue Adrienne Bolland, 8, B-6041 Gosselies, Belgium
| | - Béatrice Mestre-Voegtlé
- CNRS, Laboratoire de Synthèse et Physico-Chimie de Molécules d’Intérêt Biologique, SPCMIB, UMR-5068, 118 Route de Narbonne, F-31062 Toulouse cedex 9, France
- Université de Toulouse, UPS, Laboratoire de Synthèse et Physico-Chimie de Molécules d’Intérêt Biologique, SPCMIB, 118 route de Narbonne, F-31062 Toulouse cedex 9, France
| | - Claude Picard
- CNRS, Laboratoire de Synthèse et Physico-Chimie de Molécules d’Intérêt Biologique, SPCMIB, UMR-5068, 118 Route de Narbonne, F-31062 Toulouse cedex 9, France
- Université de Toulouse, UPS, Laboratoire de Synthèse et Physico-Chimie de Molécules d’Intérêt Biologique, SPCMIB, 118 route de Narbonne, F-31062 Toulouse cedex 9, France
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16
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Gündüz S, Power A, Maier ME, Logothetis NK, Angelovski G. Synthesis and Characterization of a Biotinylated Multivalent Targeted Contrast Agent. Chempluschem 2014; 80:612-622. [DOI: 10.1002/cplu.201402329] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2014] [Indexed: 12/29/2022]
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17
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Zhu H, Fan J, Wang B, Peng X. Fluorescent, MRI, and colorimetric chemical sensors for the first-row d-block metal ions. Chem Soc Rev 2014; 44:4337-66. [PMID: 25406612 DOI: 10.1039/c4cs00285g] [Citation(s) in RCA: 266] [Impact Index Per Article: 26.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Transition metals (d-blocks) are recognized as playing critical roles in biology, and they most often act as cofactors in diverse enzymes; however, improper regulation of transition metal stores is also connected to serious disorders. Therefore, the monitoring and imaging of transition metals are significant for biological research as well as clinical diagnosis. In this article, efforts have been made to review the chemical sensors that have been developed for the detection of the first-row d-block metals (except Cu and Zn): Cr, Mn, Fe, Co, and Ni. We focus on the development of fluorescent sensors (fall into three classes: "turn-off", "turn-on", and ratiometric), colorimetric sensors, and responsive MRI contrast agents for these transition metals (242 references). Future work will be likely to fill in the blanks: (1) sensors for Sc, Ti, and V; (2) MRI sensors for Cr, Mn, Co, Ni; (3) ratiometric fluorescent sensors for Cr(6+), Mn(2+), and Ni(2+), explore new ways of sensing Fe(3+) or Cr(3+) without the proton interference, as well as extend applications of MRI sensors to living systems.
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Affiliation(s)
- Hao Zhu
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, No. 2 Linggong Road, High-tech District, Dalian 116024, China.
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18
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Affiliation(s)
- Marie C. Heffern
- Department of Chemistry, Molecular Biosciences, Neurobiology, Biomedical Engineering, and Radiology, Northwestern University, Evanston, Illinois 60208-3113
| | - Lauren M. Matosziuk
- Department of Chemistry, Molecular Biosciences, Neurobiology, Biomedical Engineering, and Radiology, Northwestern University, Evanston, Illinois 60208-3113
| | - Thomas J. Meade
- Department of Chemistry, Molecular Biosciences, Neurobiology, Biomedical Engineering, and Radiology, Northwestern University, Evanston, Illinois 60208-3113
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19
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Sung S, Holmes H, Wainwright L, Toscani A, Stasiuk GJ, White AJP, Bell JD, Wilton-Ely JDET. Multimetallic Complexes and Functionalized Gold Nanoparticles Based on a Combination of d- and f-Elements. Inorg Chem 2014; 53:1989-2005. [DOI: 10.1021/ic401936w] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Simon Sung
- Department of Chemistry, Imperial College London, South Kensington Campus, London SW7 2AZ, United Kingdom
| | - Holly Holmes
- Department of Chemistry, Imperial College London, South Kensington Campus, London SW7 2AZ, United Kingdom
| | - Luke Wainwright
- Department of Chemistry, Imperial College London, South Kensington Campus, London SW7 2AZ, United Kingdom
| | - Anita Toscani
- Department of Chemistry, Imperial College London, South Kensington Campus, London SW7 2AZ, United Kingdom
| | - Graeme J. Stasiuk
- Department of Chemistry, Imperial College London, South Kensington Campus, London SW7 2AZ, United Kingdom
| | - Andrew J. P. White
- Department of Chemistry, Imperial College London, South Kensington Campus, London SW7 2AZ, United Kingdom
| | - Jimmy D. Bell
- Metabolic and Molecular Imaging Group,
MRC Clinical Sciences Centre, Imperial College London, Hammersmith Hospital, London W12 0NN, United Kingdom
| | - James D. E. T. Wilton-Ely
- Department of Chemistry, Imperial College London, South Kensington Campus, London SW7 2AZ, United Kingdom
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20
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Vibhute SM, Engelmann J, Verbić T, Maier ME, Logothetis NK, Angelovski G. Synthesis and characterization of pH-sensitive, biotinylated MRI contrast agents and their conjugates with avidin. Org Biomol Chem 2013; 11:1294-305. [PMID: 23223612 DOI: 10.1039/c2ob26555a] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Responsive or smart contrast agents (SCAs) provide new opportunities in magnetic resonance imaging (MRI) to examine a number of physiological and pathological events. However, their application in vivo remains challenging. Therefore, much research is focused on the optimization of their properties, to enable their use in additional imaging modalities, pre-targeted delivery, or to increase the local concentration of the agent. The key feature in the SCA synthetic modification is the retention of their physicochemical properties related to the specific MR response. Here, we report the preparation and characterization of pH sensitive SCAs appended with a phosphonate pendant arm and either an aliphatic (GdL(1)) or aromatic linker (GdL(2)). The longitudinal relaxivity of GdL(1) and GdL(2) increases by 146% and 31%, respectively, while the pH decreases from 9 to 5. These two SCAs were converted to the biotinylated systems GdL(3) and GdL(4) and their interaction with avidin was investigated. The binding affinity with avidin was assessed with a fluorescence displacement assay and with MRI phantom experiments in a 3T MRI scanner. The fluorometric assay and MRI E-titrations revealed a 3 : 1 binding mode of GdL(3-4) to avidin with the binding affinity as high as that of the parent avidin-biotin complex. The high binding affinity was confirmed with MRI by a competitive assay. The avidin-GdL(3-4) complexes thus obtained exhibit changes in both r(1) and r(2) that are pH dependent. The results reveal a new pathway for the modification and improvement of SCAs to make them more suitable for in vivo application.
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Affiliation(s)
- Sandip M Vibhute
- Department for Physiology of Cognitive Processes, Max Planck Institute for Biological Cybernetics, Spemannstr. 38, 72076 Tübingen, Germany
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21
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Kotková Z, Helm L, Kotek J, Hermann P, Lukeš I. Gadolinium complexes of monophosphinic acid DOTA derivatives conjugated to cyclodextrin scaffolds: efficient MRI contrast agents for higher magnetic fields. Dalton Trans 2013; 41:13509-19. [PMID: 23018269 DOI: 10.1039/c2dt30858d] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Middle-molecular-weight MRI contrast agents based on conjugates of a phosphinic acid DOTA analogue, 1,4,7,10-tetraazacyclododecane-4,7,10-triacetic-1-{methyl[(4-aminophenyl)methyl]phosphinic acid} (DO3AP(ABn)), with amino-substituted cyclodextrins were prepared and studied by a variety of physico-chemical methods. The conjugates were formed by reaction of the corresponding isothiocyanate with per-6-amino-α/β-cyclodextrin and were complexed with the Ln(III) ion to get the final complexes, (LnL)(6)-α-CD and (LnL)(7)-β-CD. Solution structure of the complexes was estimated by investigation of the Eu(III) complexes. The Gd(III) conjugate complexes are endowed with a short water residence time (τ(M) ∼ 10-15 ns at 298 K) and a high abundance of the twisted-square antiprismatic diastereoisomer. They show a high (1)H relaxivity at high fields due to a convenient combination of the fast water exchange rate and the slow rate of the molecular tumbling given by their macromolecular nature. The (1)H relaxation enhancements per molecule of a contrast agent (CA) are very high reaching for a larger (GdL)(7)-β-CD conjugate ∼140 s(-1) mM(-1) and ∼100 s(-1) mM(-1) at 25 °C and magnetic fields 1.5 T and 3 T, respectively, which is the highest reported longitudinal relaxivity for kinetically stable contrast agents of an intermediate molecular mass (<10 kDa) with one water molecule in the first coordination sphere.
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Affiliation(s)
- Zuzana Kotková
- Department of Inorganic Chemistry, Charles University in Prague, Hlavova 2030, 128 40 Prague 2, Czech Republic
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22
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Artali R, Bombieri G, Giovenzana G, Galli M, Lattuada L, Meneghetti F. Preparation, crystallographic and theoretical study on a bifunctional Gd-AAZTA derivative as potential MRI contrast agent precursor. Inorganica Chim Acta 2013. [DOI: 10.1016/j.ica.2013.08.004] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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23
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Goswami LN, Ma L, Chakravarty S, Cai Q, Jalisatgi SS, Hawthorne MF. Discrete nanomolecular polyhedral borane scaffold supporting multiple gadolinium(III) complexes as a high performance MRI contrast agent. Inorg Chem 2013; 52:1694-700. [PMID: 23126285 PMCID: PMC3577990 DOI: 10.1021/ic3017613] [Citation(s) in RCA: 60] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
An icosahedral closo-B(12)(2-) scaffold supports 12 copies of Gd(3+)-chelate held in close proximity with each other by suitable linkers which employ azide-alkyne click chemistry. This design is the first member of a new class of polyfunctional MRI contrast agents carrying a high payload of Gd(3+)-chelate in a sterically constrained configuration. The resulting contrast agent shows higher relaxivity values at high magnetic fields. MRI contrast agents currently in use are not as effective in this regard, presumably due to a lack of steric constraint of gadolinium centers and lower water exchange rates. In vivo MRI studies in mice show excellent contrast enhancement even at one-seventh of the safe clinical dose (0.04 mmol Gd/kg) for up to a 1 h exposure.
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Affiliation(s)
- Lalit N. Goswami
- International Institute of Nano and Molecular Medicine, School of Medicine, University of Missouri, Columbia, Missouri 65211-3450
| | - Lixin Ma
- International Institute of Nano and Molecular Medicine, School of Medicine, University of Missouri, Columbia, Missouri 65211-3450
| | - Shatadru Chakravarty
- International Institute of Nano and Molecular Medicine, School of Medicine, University of Missouri, Columbia, Missouri 65211-3450
| | - Quanyu Cai
- International Institute of Nano and Molecular Medicine, School of Medicine, University of Missouri, Columbia, Missouri 65211-3450
| | - Satish S. Jalisatgi
- International Institute of Nano and Molecular Medicine, School of Medicine, University of Missouri, Columbia, Missouri 65211-3450
| | - M. Frederick Hawthorne
- International Institute of Nano and Molecular Medicine, School of Medicine, University of Missouri, Columbia, Missouri 65211-3450
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24
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Ferreira MF, Martins AF, Martins CIO, Ferreira PM, Tóth É, Rodrigues TB, Calle D, Cerdan S, López-Larrubia P, Martins JA, Geraldes CFGC. Amide conjugates of the DO3A-N-(α-amino)propionate ligand: leads for stable, high relaxivity contrast agents for MRI? CONTRAST MEDIA & MOLECULAR IMAGING 2012; 8:40-9. [DOI: 10.1002/cmmi.1492] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Miguel F. Ferreira
- Centro de Química, Campus de Gualtar; Universidade do Minho; 4710-057 Braga Portugal
| | - André F. Martins
- Center of Neurosciences and Cell Biology; University of Coimbra; Largo Marquês de Pombal Coimbra Portugal
- Centre de Biophysique Moléculaire UPR 4301, CNRS; Rue Charles Sadron 45071 Orléans France
| | - Catarina I. O. Martins
- Center of Neurosciences and Cell Biology; University of Coimbra; Largo Marquês de Pombal Coimbra Portugal
| | - Paula M. Ferreira
- Centro de Química, Campus de Gualtar; Universidade do Minho; 4710-057 Braga Portugal
| | - Éva Tóth
- Centre de Biophysique Moléculaire UPR 4301, CNRS; Rue Charles Sadron 45071 Orléans France
| | - Tiago B. Rodrigues
- Cancer Research UK; Cambridge Research Institute, Li Ka Shing Centre; Cambridge CB2 0RE UK
- Department of Biochemistry; University of Cambridge; Cambridge CB2 1GA UK
| | - Daniel Calle
- Instituto de Investigaciones Biomédicas ‘Alberto Sols’, CSIC-UAM; Madrid Spain
| | - Sebastian Cerdan
- Instituto de Investigaciones Biomédicas ‘Alberto Sols’, CSIC-UAM; Madrid Spain
| | | | - José A. Martins
- Centro de Química, Campus de Gualtar; Universidade do Minho; 4710-057 Braga Portugal
| | - Carlos F. G. C. Geraldes
- Center of Neurosciences and Cell Biology; University of Coimbra; Largo Marquês de Pombal Coimbra Portugal
- Department of Life Sciences, Faculty of Science and Technology; University of Coimbra; P.O. Box 3046 3001-401 Coimbra Portugal
- Centro de Química de Coimbra, Rua Larga; University of Coimbra; 3004-535 Coimbra Portugal
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25
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Luo J, Li WS, Xu P, Zhang LY, Chen ZN. Zn2+ Responsive Bimodal Magnetic Resonance Imaging and Fluorescent Imaging Probe Based on a Gadolinium(III) Complex. Inorg Chem 2012; 51:9508-16. [PMID: 22880548 DOI: 10.1021/ic301308z] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Jian Luo
- State Key Laboratory of Structural Chemistry, Fujian Institute
of Research on the Structure of Matter, Chinese Academy of Sciences, 155 Yangqiao Road West, Fuzhou 350002,
China
| | - Wei-Sheng Li
- State Key Laboratory of Structural Chemistry, Fujian Institute
of Research on the Structure of Matter, Chinese Academy of Sciences, 155 Yangqiao Road West, Fuzhou 350002,
China
| | - Peng Xu
- State Key Laboratory of Structural Chemistry, Fujian Institute
of Research on the Structure of Matter, Chinese Academy of Sciences, 155 Yangqiao Road West, Fuzhou 350002,
China
| | - Li-Yi Zhang
- State Key Laboratory of Structural Chemistry, Fujian Institute
of Research on the Structure of Matter, Chinese Academy of Sciences, 155 Yangqiao Road West, Fuzhou 350002,
China
| | - Zhong-Ning Chen
- State Key Laboratory of Structural Chemistry, Fujian Institute
of Research on the Structure of Matter, Chinese Academy of Sciences, 155 Yangqiao Road West, Fuzhou 350002,
China
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26
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Verwilst P, Eliseeva SV, Vander Elst L, Burtea C, Laurent S, Petoud S, Muller RN, Parac-Vogt TN, De Borggraeve WM. A Tripodal Ruthenium–Gadolinium Metallostar as a Potential αvβ3 Integrin Specific Bimodal Imaging Contrast Agent. Inorg Chem 2012; 51:6405-11. [DOI: 10.1021/ic300717m] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Peter Verwilst
- University of Leuven, Department
of Chemistry, Celestijnenlaan 200F−P.O. Box 2404, B-3001 Heverlee,
Belgium
| | - Svetlana V. Eliseeva
- University of Leuven, Department
of Chemistry, Celestijnenlaan 200F−P.O. Box 2404, B-3001 Heverlee,
Belgium
- Centre de Biophysique
Moléculaire,
UPR 4301 CNRS, Rue Charles Sadron, 45071 Orléans Cedex 2, France
- Le STUDIUM, Institute for Advanced Studies, Orléans & Tours, France
| | - Luce Vander Elst
- NMR and Molecular Imaging Laboratory,
Department of General, Organic and Biomedical Chemistry, University
of Mons-Hainaut, B-7000 Mons, Belgium
| | - Carmen Burtea
- NMR and Molecular Imaging Laboratory,
Department of General, Organic and Biomedical Chemistry, University
of Mons-Hainaut, B-7000 Mons, Belgium
| | - Sophie Laurent
- NMR and Molecular Imaging Laboratory,
Department of General, Organic and Biomedical Chemistry, University
of Mons-Hainaut, B-7000 Mons, Belgium
| | - Stéphane Petoud
- Centre de Biophysique
Moléculaire,
UPR 4301 CNRS, Rue Charles Sadron, 45071 Orléans Cedex 2, France
| | - Robert N. Muller
- NMR and Molecular Imaging Laboratory,
Department of General, Organic and Biomedical Chemistry, University
of Mons-Hainaut, B-7000 Mons, Belgium
- Center for Microscopy and Molecular
Imaging, Rue Adrienne Bolland 8, B-6041 Charleroi, Belgium
| | - Tatjana N. Parac-Vogt
- University of Leuven, Department
of Chemistry, Celestijnenlaan 200F−P.O. Box 2404, B-3001 Heverlee,
Belgium
| | - Wim M. De Borggraeve
- University of Leuven, Department
of Chemistry, Celestijnenlaan 200F−P.O. Box 2404, B-3001 Heverlee,
Belgium
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27
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Mishra A, Joshi R, Engelmann J, Logothetis NK. Synthesis and in vitro evaluation of a biotinylated dextran-derived probe for molecular imaging. ACS Chem Neurosci 2012; 3:268-73. [PMID: 22860193 DOI: 10.1021/cn200112v] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2011] [Accepted: 01/16/2012] [Indexed: 11/30/2022] Open
Abstract
Herein we report the design, synthesis, and in vitro evaluation of a gadolinium-containing biotinylated dextran-derived molecular imaging probe as a prospective neuroanatomical tracer by means of magnetic resonance imaging (MRI). The probe was effectively taken up by cultured differentiated murine neuroblastoma cells and significantly enhanced the contrast in T(1)- and T(2)-weighted MR images of labeled cells under physiological conditions. A significant longitudinal relaxation rate enhancement in the presence of avidin was observed allowing the verification of the results in the end of noninvasive longitudinal MRI connectivity studies by post-mortem histology. The in vitro results indicate that the probe has the potential to be used in vivo to identify the organization of global neuronal networks in the brain with MRI.
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Affiliation(s)
| | | | | | - Nikos K. Logothetis
- Imaging Science and Biomedical
Engineering, University of Manchester,
Manchester M13 9PL, England
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28
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Bonnet CS, Tóth É. Magnetic Resonance Imaging Contrast Agents. Supramol Chem 2012. [DOI: 10.1002/9780470661345.smc104] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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29
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30
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Li WS, Luo J, Jiang F, Chen ZN. A Gd3Al tetranuclear complex as a potential bimodal MRI/optical imaging agent. Dalton Trans 2012; 41:9405-10. [DOI: 10.1039/c2dt30513e] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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31
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Bonnet CS, Buron F, Caillé F, Shade CM, Drahoš B, Pellegatti L, Zhang J, Villette S, Helm L, Pichon C, Suzenet F, Petoud S, Tóth É. Pyridine-Based Lanthanide Complexes Combining MRI and NIR Luminescence Activities. Chemistry 2011; 18:1419-31. [DOI: 10.1002/chem.201102310] [Citation(s) in RCA: 82] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2011] [Indexed: 11/07/2022]
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32
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Garcia J, Neelavalli J, Haacke EM, Allen MJ. Eu(II)-containing cryptates as contrast agents for ultra-high field strength magnetic resonance imaging. Chem Commun (Camb) 2011; 47:12858-60. [PMID: 22046588 PMCID: PMC3255567 DOI: 10.1039/c1cc15219j] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
The relaxivity (contrast-enhancing ability) of Eu(II)-containing cryptates was found to be better than a clinically approved Gd(III)-based agent at 7 T. These cryptates are among a few examples of paramagnetic substances that show an increase in longitudinal relaxivity, r(1), at ultra-high field strength relative to lower field strengths.
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Affiliation(s)
- Joel Garcia
- Department of Chemistry, Wayne State University, 5101 Cass Avenue, Detroit, MI 48202, USA
| | | | - E. Mark Haacke
- Department of Radiology, Wayne State University, Detroit, MI 48201, USA
| | - Matthew J. Allen
- Department of Chemistry, Wayne State University, 5101 Cass Avenue, Detroit, MI 48202, USA
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33
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Dehaen G, Eliseeva SV, Kimpe K, Laurent S, Vander Elst L, Muller RN, Dehaen W, Binnemans K, Parac-Vogt TN. A Self-Assembled Complex with a Titanium(IV) Catecholate Core as a Potential Bimodal Contrast Agent. Chemistry 2011; 18:293-302. [DOI: 10.1002/chem.201101413] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2011] [Revised: 08/23/2011] [Indexed: 11/06/2022]
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34
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Mishra A, Schüz A, Engelmann J, Beyerlein M, Logothetis NK, Canals S. Biocytin-derived MRI contrast agent for longitudinal brain connectivity studies. ACS Chem Neurosci 2011; 2:578-87. [PMID: 22860157 DOI: 10.1021/cn200022m] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2011] [Accepted: 08/03/2011] [Indexed: 11/28/2022] Open
Abstract
To investigate the connectivity of brain networks noninvasively and dynamically, we have developed a new strategy to functionalize neuronal tracers and designed a biocompatible probe that can be visualized in vivo using magnetic resonance imaging (MRI). Furthermore, the multimodal design used allows combined ex vivo studies with microscopic spatial resolution by conventional histochemical techniques. We present data on the functionalization of biocytin, a well-known neuronal tract tracer, and demonstrate the validity of the approach by showing brain networks of cortical connectivity in live rats under MRI, together with the corresponding microscopic details, such as fibers and neuronal morphology under light microscopy. We further demonstrate that the developed molecule is the first MRI-visible probe to preferentially trace retrograde connections. Our study offers a new platform for the development of multimodal molecular imaging tools of broad interest in neuroscience, that capture in vivo the dynamics of large scale neural networks together with their microscopic characteristics, thereby spanning several organizational levels.
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Affiliation(s)
| | | | | | | | - Nikos K. Logothetis
- Imaging Science and Biomedical Engineering, University of Manchester, Manchester M13 9PL, England
| | - Santiago Canals
- Instituto de Neurociencias CSIC-UMH, Campus de San Juan, 03550 San Juan de Alicante, Spain
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Optimization of gadolinium-based MRI contrast agents for high magnetic-field applications. Future Med Chem 2011; 2:385-96. [PMID: 21426173 DOI: 10.4155/fmc.09.174] [Citation(s) in RCA: 82] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
The search for higher spatial resolution and better sensitivity stimulates the development of high-field (3 T) and ultrahigh field (>3 T) MRI scanners. Gadolinium-based MRI contrast agents, commercial ones used in clinics, as well as recently developed more efficient ones, become less and less effective as the magnetic field is increased above 3 T and, therefore, special contrast agents for ultrahigh-field MRI have to be developed. As the relaxivity, defined as relaxation enhancement per Gd-ion, is rather limited, marked boosts in performance can only be achieved by creating systems transporting many paramagnetic centers to the desired site. To obtain maximum efficiency gadolinium chelates with more than one water molecule in the first coordination sphere must be used. The rotational correlation time should be in the range of 0.5-1 ns and the residence time of first sphere water molecules should be short (<10 ns).
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Abstract
Given the important role of metal ions in fundamental biological processes, the visualization of their concentration in living animals by repeatable, noninvasive imaging techniques, such as MRI, would be highly desirable. A large number of metal-responsive MRI contrast agents, the majority based on Gd(3+) complexes, have been reported in recent years. The contrast-enhancing properties (relaxivity) of a Gd(3+) complex can be most conveniently modulated by interaction with the sensed metal cation via changes in the number of water molecules bound directly to Gd(3+) or changes in the size of the complex, which represent the two major strategies to develop metal sensitive MRI probes. Here, we survey paramagnetic lanthanide complexes involving Gd(3+) agents and paramagnetic chemical exchange saturation transfer probes designed to detect the most important endogenous metal ions: calcium, zinc, iron and copper. Future work will likely focus on extending applications of these agents to living animals, as well as on exploring new ways of creating molecular MRI probes in order to meet requirements such as higher specificity or lower detection limits.
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Henig J, Mamedov I, Fouskova P, Tóth É, Logothetis NK, Angelovski G, Mayer HA. Influence of Calcium-Induced Aggregation on the Sensitivity of Aminobis(methylenephosphonate)-Containing Potential MRI Contrast Agents. Inorg Chem 2011; 50:6472-81. [DOI: 10.1021/ic1024235] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jörg Henig
- Institut für Anorganische Chemie, Eberhard Karls Universität Tübingen, Auf der Morgenstelle 18, 72076 Tübingen, Germany
| | - Ilgar Mamedov
- Abteilung für Physiologie kognitiver Prozesse, Max-Planck-Institut für biologische Kybernetik, Spemannstrasse 38, 72076 Tübingen, Germany
| | - Petra Fouskova
- Le Centre de Biophysique Moléculaire, Centre National de la Recherche Scientifique, CNRS, Rue Charles Sadron, 45071 Orléans, France
| | - Éva Tóth
- Le Centre de Biophysique Moléculaire, Centre National de la Recherche Scientifique, CNRS, Rue Charles Sadron, 45071 Orléans, France
| | - Nikos K. Logothetis
- Abteilung für Physiologie kognitiver Prozesse, Max-Planck-Institut für biologische Kybernetik, Spemannstrasse 38, 72076 Tübingen, Germany
- Imaging Science and Biomedical Engineering, The University of Manchester, Oxford Road, Manchester M13 9PT, U.K
| | - Goran Angelovski
- Abteilung für Physiologie kognitiver Prozesse, Max-Planck-Institut für biologische Kybernetik, Spemannstrasse 38, 72076 Tübingen, Germany
| | - Hermann A. Mayer
- Institut für Anorganische Chemie, Eberhard Karls Universität Tübingen, Auf der Morgenstelle 18, 72076 Tübingen, Germany
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Jacques V, Dumas S, Sun WC, Troughton JS, Greenfield MT, Caravan P. High-relaxivity magnetic resonance imaging contrast agents. Part 2. Optimization of inner- and second-sphere relaxivity. Invest Radiol 2011; 45:613-24. [PMID: 20808234 DOI: 10.1097/rli.0b013e3181ee6a49] [Citation(s) in RCA: 96] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
RATIONALE AND OBJECTIVES The observed relaxivity of gadolinium-based contrast agents has contributions from the water molecule(s) that bind directly to the gadolinium ion (inner-sphere water), long-lived water molecules and exchangeable protons that make up the second-sphere of coordination, and water molecules that diffuse near the contrast agent (outer-sphere). Inner- and second-sphere relaxivity can both be increased by optimization of the lifetimes of the water molecules and protons in these coordination spheres, the rotational motion of the complex, and the electronic relaxation of the gadolinium ion. We sought to identify new high-relaxivity contrast agents by systematically varying the donor atoms that bind directly to gadolinium to increase inner-sphere relaxivity and concurrently including substituents that influence the second-sphere relaxivity. METHODS Twenty gadolinium-1,4,7,10-tetraazacyclo-dodecane-N,N',N″,N'″-tetraacetato derivatives were prepared and their relaxivity determined in presence and absence of human serum albumin as a function of temperature and magnetic field. Data was analyzed to extract the underlying molecular parameters influencing relaxivity. Each compound had a common albumin-binding group and an inner-sphere donor set comprising the 4 tertiary amine N atoms from cyclen, an α-substituted acetate oxygen atom, 2 amide oxygen atoms, an inner-sphere water oxygen atom, and a variable donor group. Each amide nitrogen was substituted with different groups to promote hydrogen bonding with second-sphere water molecules. RESULTS Relativities at 0.47 and 1.4 T, 37°C, in serum albumin ranged from 16.0 to 58.1 mM(-1)s(-1) and from 12.3 to 34.8 mM(-1)s(-1), respectively. The reduction of inner-sphere water exchange typical of amide donor groups could be offset by incorporating a phosphonate or phenolate oxygen atom donor in the first coordination sphere, resulting in higher relaxivity. Amide nitrogen substitution with pendant phosphonate or carboxylate groups increased relaxivity by as much as 88% compared with the N-methyl amide analog. Second-sphere relaxivity contributed as much as 24 and 14 mM(-1)s(-1) at 0.47 and 1.4 T, respectively. CONCLUSIONS Water/proton exchange dynamics in the inner- and second-coordination sphere can be predictably tuned by choice of donor atoms and second-sphere substituents, resulting in high-relaxivity agents.
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Mastarone DJ, Harrison VS, Eckermann AL, Parigi G, Luchinat C, Meade TJ. A modular system for the synthesis of multiplexed magnetic resonance probes. J Am Chem Soc 2011; 133:5329-37. [PMID: 21413801 PMCID: PMC3086647 DOI: 10.1021/ja1099616] [Citation(s) in RCA: 113] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
We have developed a modular architecture for preparing high-relaxivity multiplexed probes utilizing click chemistry. Our system incorporates azide bearing Gd(III) chelates and a trialkyne scaffold with a functional group for subsequent modification. In optimizing the relaxivity of this new complex, we undertook a study of the linker length between a chelate and the scaffold to determine its effect on relaxivity. The results show a strong dependence on flexibility between the individual chelates and the scaffold with decreasing linker length leading to significant increases in relaxivity. Nuclear magnetic resonance dispersion (NMRD) spectra were obtained to confirm a 10-fold increase in the rotational correlation time from 0.049 to 0.60 ns at 310 K. We have additionally obtained a crystal structure demonstrating that modification with an azide does not impact the coordination of the lanthanide. The resulting multinuclear center has a 500% increase in per Gd (or ionic) relaxivity at 1.41 T versus small molecule contrast agents and a 170% increase in relaxivity at 9.4 T.
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Affiliation(s)
- Daniel J. Mastarone
- Department of Chemistry, Molecular Biosciences, Neurobiology and Physiology, and Radiology, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208-3113
| | - Victoria S.R. Harrison
- Department of Chemistry, Molecular Biosciences, Neurobiology and Physiology, and Radiology, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208-3113
| | - Amanda L. Eckermann
- Department of Chemistry, Molecular Biosciences, Neurobiology and Physiology, and Radiology, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208-3113
| | - Giacomo Parigi
- CERM and Department of Chemistry, University of Florence, Florence, Italy
| | - Claudio Luchinat
- CERM and Department of Chemistry, University of Florence, Florence, Italy
| | - Thomas J. Meade
- Department of Chemistry, Molecular Biosciences, Neurobiology and Physiology, and Radiology, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208-3113
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Li WS, Luo J, Chen ZN. A gadolinium(III) complex with 8-amidequinoline based ligand as copper(II) ion responsive contrast agent. Dalton Trans 2011; 40:484-8. [DOI: 10.1039/c0dt01141j] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Placidi MP, Engelmann J, Natrajan LS, Logothetis NK, Angelovski G. An aryl-phosphonate appended macrocyclic platform for lanthanide based bimodal imaging agents. Chem Commun (Camb) 2011; 47:11534-6. [DOI: 10.1039/c1cc14437e] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Terreno E, Castelli DD, Viale A, Aime S. Challenges for molecular magnetic resonance imaging. Chem Rev 2010; 110:3019-42. [PMID: 20415475 DOI: 10.1021/cr100025t] [Citation(s) in RCA: 563] [Impact Index Per Article: 40.2] [Reference Citation Analysis] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Enzo Terreno
- Department of Chemistry IFM and Molecular Imaging Center, University of Torino, Torino, Italy
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Kotková Z, Kotek J, Jirák D, Jendelová P, Herynek V, Berková Z, Hermann P, Lukeš I. Cyclodextrin-Based Bimodal Fluorescence/MRI Contrast Agents: An Efficient Approach to Cellular Imaging. Chemistry 2010; 16:10094-102. [DOI: 10.1002/chem.200903519] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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44
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Towards highly efficient, intelligent and bimodal imaging probes: Novel approaches provided by lanthanide coordination chemistry. CR CHIM 2010. [DOI: 10.1016/j.crci.2010.03.026] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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45
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Bonnet CS, Tóth E. Smart MR imaging agents relevant to potential neurologic applications. AJNR Am J Neuroradiol 2010; 31:401-9. [PMID: 19833798 DOI: 10.3174/ajnr.a1753] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Molecular imaging is aimed at the noninvasive visualization of the expression and function of bioactive molecules that often represent specific molecular signatures in disease processes. Any molecular imaging procedure requires an imaging probe that is specific to a given molecular event, which puts an important emphasis on chemistry development. In MR imaging, the past years have witnessed significant advances in the design of molecular agents, though most of these efforts have not yet progressed to in vivo studies. In this review, we present some examples relevant to potential neurobiologic applications. Our aim was to show what chemistry can bring to the area of molecular MR imaging with a focus on the 2 main classes of imaging probes: Gd(3+)-based and PARACEST agents. We will discuss responsive probes for the detection of metal ions such as Ca, Zn, Fe, and Cu, pH, enzymatic activity, and oxygenation state.
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Affiliation(s)
- C S Bonnet
- Centre National de la Recherche Scientifique, Centre de Biophysique Moléculaire, Orléans, France
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Caravan P, Farrar CT, Frullano L, Uppal R. Influence of molecular parameters and increasing magnetic field strength on relaxivity of gadolinium- and manganese-based T1 contrast agents. CONTRAST MEDIA & MOLECULAR IMAGING 2009; 4:89-100. [PMID: 19177472 DOI: 10.1002/cmmi.267] [Citation(s) in RCA: 376] [Impact Index Per Article: 25.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Simulations were performed to understand the relative contributions of molecular parameters to longitudinal (r(1)) and transverse (r(2)) relaxivity as a function of applied field, and to obtain theoretical relaxivity maxima over a range of fields to appreciate what relaxivities can be achieved experimentally. The field-dependent relaxivities of a panel of gadolinium and manganese complexes with different molecular parameters, water exchange rates, rotational correlation times, hydration state, etc. were measured to confirm that measured relaxivities were consistent with theory. The design tenets previously stressed for optimizing r(1) at low fields (very slow rotational motion; chelate immobilized by protein binding; optimized water exchange rate) do not apply at higher fields. At 1.5 T and higher fields, an intermediate rotational correlation time is desired (0.5-4 ns), while water exchange rate is not as critical to achieving a high r(1). For targeted applications it is recommended to tether a multimer of metal chelates to a protein-targeting group via a long flexible linker to decouple the slow motion of the protein from the water(s) bound to the metal ions. Per ion relaxivities of 80, 45, and 18 mM(-1) s(-1) at 1.5, 3 and 9.4 T, respectively, are feasible for Gd(3+) and Mn(2+) complexes.
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Affiliation(s)
- Peter Caravan
- A. A. Martinos Center for Biomedical Imaging, Massachusetts General Hospital and Department of Radiology, Harvard Medical School, 149 Thirteenth St, Charlestown, MA 02129, USA.
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Delépine AS, Tripier R, Bernard H, Bris NL, Handel H. Selective mono-N-alkylation of triethylenetetraamine. A new versatile route to polylinear aza-ligands. Tetrahedron Lett 2009. [DOI: 10.1016/j.tetlet.2009.03.088] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Geraldes CFGC, Laurent S. Classification and basic properties of contrast agents for magnetic resonance imaging. CONTRAST MEDIA & MOLECULAR IMAGING 2009; 4:1-23. [PMID: 19156706 DOI: 10.1002/cmmi.265] [Citation(s) in RCA: 354] [Impact Index Per Article: 23.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
A comprehensive classification of contrast agents currently used or under development for magnetic resonance imaging (MRI) is presented. Agents based on small chelates, macromolecular systems, iron oxides and other nanosystems, as well as responsive, chemical exchange saturation transfer (CEST) and hyperpolarization agents are covered in order to discuss the various possibilities of using MRI as a molecular imaging technique. The classification includes composition, magnetic properties, biodistribution and imaging applications. Chemical compositions of various classes of MRI contrast agents are tabulated, and their magnetic status including diamagnetic, paramagnetic and superparamagnetic are outlined. Classification according to biodistribution covers all types of MRI contrast agents including, among others, extracellular, blood pool, polymeric, particulate, responsive, oral, and organ specific (hepatobiliary, RES, lymph nodes, bone marrow and brain). Various targeting strategies of molecular, macromolecular and particulate carriers are also illustrated.
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Affiliation(s)
- Carlos F G C Geraldes
- Department of Biochemistry, Faculty of Science and Technology, and Center of Neurosciences and Cell Biology, University of Coimbra, P-3001-401 Coimbra, Portugal.
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Baranyai Z, Uggeri F, Giovenzana G, Bényei A, Brücher E, Aime S. Equilibrium and Kinetic Properties of the Lanthanoids(III) and Various Divalent Metal Complexes of the Heptadentate Ligand AAZTA. Chemistry 2009; 15:1696-705. [DOI: 10.1002/chem.200801803] [Citation(s) in RCA: 86] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Design and function of metal complexes as contrast agents in MRI. ADVANCES IN INORGANIC CHEMISTRY 2009. [DOI: 10.1016/s0898-8838(09)00202-5] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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