151
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Kennis BA, Michel KA, Brugmann WB, Laureano A, Tao RH, Somanchi SS, Einstein SA, Bravo-Alegria JB, Maegawa S, Wahba A, Kiany S, Gordon N, Silla L, Schellingerhout D, Khatua S, Zaky W, Sandberg D, Cooper L, Lee DA, Bankson JA, Gopalakrishnan V. Monitoring of intracerebellarly-administered natural killer cells with fluorine-19 MRI. J Neurooncol 2019; 142:395-407. [DOI: 10.1007/s11060-019-03091-5] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2018] [Accepted: 01/05/2019] [Indexed: 01/13/2023]
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152
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A dual 1H/19F birdcage coil for small animals at 7 T MRI. MAGNETIC RESONANCE MATERIALS IN PHYSICS BIOLOGY AND MEDICINE 2019; 32:79-87. [DOI: 10.1007/s10334-018-00733-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/29/2018] [Revised: 12/14/2018] [Accepted: 12/21/2018] [Indexed: 12/22/2022]
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153
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Munkhbat O, Canakci M, Zheng S, Hu W, Osborne B, Bogdanov AA, Thayumanavan S. 19F MRI of Polymer Nanogels Aided by Improved Segmental Mobility of Embedded Fluorine Moieties. Biomacromolecules 2019; 20:790-800. [PMID: 30563327 PMCID: PMC6449047 DOI: 10.1021/acs.biomac.8b01383] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Using fluorinated probes for 19F MRI imaging is an emerging field with potential utility in cellular imaging and cell tracking in vivo, which complements conventional 1H MRI. An attractive feature of 19F-based imaging is that this is a bio-orthogonal nucleus and the naturally abundant isotope is NMR active. A significant hurdle however in the 19F MRI arises from the tendency of organic macromolecules, with multiple fluorocarbon substitutions, to aggregate in the aqueous phase. This aggregation results in significant loss of sensitivity, because the T2 relaxation times of these aggregated 19F species tend to be significantly lower. In this report, we have developed a strategy to covalently trap nanoscopic states with an optimal degree of 19F substitutions, followed by significant enhancement in T2 relaxation times through increased segmental mobility of the side chain substituents facilitated by the stimulus-responsive elements in the polymeric nanogel. In addition to NMR relaxation time based evaluations, the ability to obtain such signals are also evaluated in mouse models. The propensity of these nanoscale assemblies to encapsulate hydrophobic drug molecules and the availability of surfaces for convenient introduction of fluorescent labels suggest the potential of these nanoscale architectures for use in multimodal imaging and therapeutic applications.
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Affiliation(s)
- Oyuntuya Munkhbat
- Department of Chemistry , University of Massachusetts , Amherst , Massachusetts 01003 , United States
| | - Mine Canakci
- Molecular and Cellular Biology Program , University of Massachusetts , Amherst , Massachusetts 01003 , United States
| | - Shaokuan Zheng
- Department of Radiology and the Laboratory of Molecular Imaging Probes and The Chemical Biology Interface Program , University of Massachusetts Medical School , Worcester , Massachusetts 01655 , United States
| | - Weiguo Hu
- Department of Polymer Science and Engineering , University of Massachusetts , Amherst , Massachusetts 01003 , United States
| | - Barbara Osborne
- Molecular and Cellular Biology Program , University of Massachusetts , Amherst , Massachusetts 01003 , United States
- The Center for Bioactive Delivery, Institute for Applied Life Sciences , University of Massachusetts , Amherst , Massachusetts 01003 , United States
| | - Alexei A Bogdanov
- Department of Radiology and the Laboratory of Molecular Imaging Probes and The Chemical Biology Interface Program , University of Massachusetts Medical School , Worcester , Massachusetts 01655 , United States
| | - S Thayumanavan
- Department of Chemistry , University of Massachusetts , Amherst , Massachusetts 01003 , United States
- Molecular and Cellular Biology Program , University of Massachusetts , Amherst , Massachusetts 01003 , United States
- The Center for Bioactive Delivery, Institute for Applied Life Sciences , University of Massachusetts , Amherst , Massachusetts 01003 , United States
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154
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Renne J, Gutberlet M, Voskrebenzev A, Kern A, Kaireit T, Hinrichs JB, Braubach P, Falk CS, Höffler K, Warnecke G, Zardo P, Haverich A, Wacker F, Vogel-Claussen J, Zinne N. Functional Pulmonary Magnetic Resonance Imaging for Detection of Ischemic Injury in a Porcine Ex-Vivo Lung Perfusion System Prior to Transplantation. Acad Radiol 2019; 26:170-178. [PMID: 29929935 DOI: 10.1016/j.acra.2018.05.006] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2018] [Revised: 05/07/2018] [Accepted: 05/08/2018] [Indexed: 10/28/2022]
Abstract
RATIONALE AND OBJECTIVES To evaluate the feasibility of multiparametric magnetic resonance imaging (MRI) of the lungs to detect impaired organ function in a porcine model of ischemic injury within an ex-vivo lung perfusion system (EVLP) prior to transplantation. MATERIALS AND METHODS Twelve pigs were anesthetized, and left lungs were clamped to induce warm ischemia for 3 hours. Right lungs remained perfused as controls. Lungs were removed and installed in an EVLP for 12 hours. Lungs in the EVLP were imaged repeatedly using computed tomography, proton MRI (1H-MRI) and fluorine MRI (19F-MRI). Dynamic contrast-enhanced derived parenchymal blood volume, oxygen washout times, and 19F washout times were calculated. PaO2 was measured for ischemic and normal lungs, wet/dry ratio was determined, histologic samples were assessed, and cytokines in the lung tissue were analyzed. Statistical analysis was performed using nonparametric testing. RESULTS Eleven pigs were included in the final analysis. Ischemic lungs showed significantly higher wet/dry ratios (p = 0.024), as well as IL-8 tissue levels (p = 0.0098). Histologic assessment as well as morphologic scoring of computed tomography and 1H-MRI did not reveal significant differences between ischemic and control lungs. 19F washout (p = 0.966) and parenchymal blood flow (p = 0.32) were not significantly different. Oxygen washout was significantly prolonged in ischemic lungs compared to normal control lungs at the beginning (p = 0.018) and further prolonged at the end of the EVLP run (p = 0.005). CONCLUSION Multiparametric pulmonary MRI is feasible in lung allografts within an EVLP system. Oxygen-enhanced imaging seems to be a promising marker for ischemic injury, enabling detection of affected lung segments prior to transplantation.
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155
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Jirak D, Galisova A, Kolouchova K, Babuka D, Hruby M. Fluorine polymer probes for magnetic resonance imaging: quo vadis? MAGMA (NEW YORK, N.Y.) 2019; 32:173-185. [PMID: 30498886 PMCID: PMC6514090 DOI: 10.1007/s10334-018-0724-6] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/20/2018] [Revised: 11/19/2018] [Accepted: 11/21/2018] [Indexed: 12/26/2022]
Abstract
Over the last few years, the development and relevance of 19F magnetic resonance imaging (MRI) for use in clinical practice has emerged. MRI using fluorinated probes enables the achievement of a specific signal with high contrast in MRI images. However, to ensure sufficient sensitivity of 19F MRI, fluorine probes with a high content of chemically equivalent fluorine atoms are required. The majority of 19F MRI agents are perfluorocarbon emulsions, which have a broad range of applications in molecular imaging, although the content of fluorine atoms in these molecules is limited. In this review, we focus mainly on polymer probes that allow higher fluorine content and represent versatile platforms with properties tailorable to a plethora of biomedical in vivo applications. We discuss the chemical development, up to the first imaging applications, of these promising fluorine probes, including injectable polymers that form depots that are intended for possible use in cancer therapy.
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Affiliation(s)
- Daniel Jirak
- Institute for Clinical and Experimental Medicine, Vídeňská 9, 140 21, Prague 4, Czech Republic.
- Institute of Biophysics and Informatics, 1st Medicine Faculty, Charles University, Salmovská 1, 120 00, Prague, Czech Republic.
- Faculty of Health Studies, Technical University of Liberec, Studentská 1402/2, 461 17, Liberec 1, Czech Republic.
| | - Andrea Galisova
- Institute for Clinical and Experimental Medicine, Vídeňská 9, 140 21, Prague 4, Czech Republic
| | - Kristyna Kolouchova
- Institute of Macromolecular Chemistry, Czech Academy of Sciences, Heyrovského sq. 2, 162 06, Prague 6, Czech Republic
| | - David Babuka
- Institute of Macromolecular Chemistry, Czech Academy of Sciences, Heyrovského sq. 2, 162 06, Prague 6, Czech Republic
| | - Martin Hruby
- Institute of Macromolecular Chemistry, Czech Academy of Sciences, Heyrovského sq. 2, 162 06, Prague 6, Czech Republic
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156
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Herynek V, Turnovcová K, Gálisová A, Kaman O, Mareková D, Koktan J, Vosmanská M, Kosinová L, Jendelová P. Manganese-Zinc Ferrites: Safe and Efficient Nanolabels for Cell Imaging and Tracking In Vivo. ChemistryOpen 2019; 8:155-165. [PMID: 30740290 PMCID: PMC6356160 DOI: 10.1002/open.201800261] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2018] [Accepted: 12/11/2018] [Indexed: 12/16/2022] Open
Abstract
Manganese-zinc ferrite nanoparticles were synthesized by using a hydrothermal treatment, coated with silica, and then tested as efficient cellular labels for cell tracking, using magnetic resonance imaging (MRI) in vivo. A toxicity study was performed on rat mesenchymal stem cells and C6 glioblastoma cells. Adverse effects on viability and cell proliferation were observed at the highest concentration (0.55 mM) only; cell viability was not compromised at lower concentrations. Nanoparticle internalization was confirmed by transmission electron microscopy. The particles were found in membranous vesicles inside the cytoplasm. Although the metal content (0.42 pg Fe/cell) was lower compared to commercially available iron oxide nanoparticles, labeled cells reached a comparable relaxation rate R 2, owing to higher nanoparticle relaxivity. Cells from transgenic luciferase-positive rats were used for in vivo experiments. Labeled cells were transplanted into the muscles of non-bioluminescent rats and visualized by MRI. The cells produced a distinct hypointense signal in T2- or T2*-weighted MR images in vivo. Cell viability in vivo was verified by bioluminescence.
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Affiliation(s)
- Vít Herynek
- Radiodiagnostic and Interventional Radiology Department Institute for Clinical and Experimental Medicine Vídeňská 1958/9 140 21 Prague Czech Republic.,Center for Advanced Preclinical Imaging First Faculty of Medicine Charles University Salmovská 3 Prague Czech Republic
| | - Karolína Turnovcová
- Department of Tissue Culture and Stem Cells Institute of Experimental Medicine, Czech Academy of Sciences Vídeňská 1083 Prague Czech Republic
| | - Andrea Gálisová
- Radiodiagnostic and Interventional Radiology Department Institute for Clinical and Experimental Medicine Vídeňská 1958/9 140 21 Prague Czech Republic
| | - Ondřej Kaman
- Institute of Physics, Czech Academy of Sciences Cukrovarnická 10 Prague Czech Republic
| | - Dana Mareková
- Department of Tissue Culture and Stem Cells Institute of Experimental Medicine, Czech Academy of Sciences Vídeňská 1083 Prague Czech Republic
| | - Jakub Koktan
- Institute of Physics, Czech Academy of Sciences Cukrovarnická 10 Prague Czech Republic.,Faculty of Chemical Engineering University of Chemistry and Technology Technická 5 Prague Czech Republic
| | - Magda Vosmanská
- Faculty of Chemical Engineering University of Chemistry and Technology Technická 5 Prague Czech Republic
| | - Lucie Kosinová
- Experimental Medicine Centre Institute for Clinical and Experimental Medicine Vídeňská 1958/9 Prague Czech Republic
| | - Pavla Jendelová
- Department of Tissue Culture and Stem Cells Institute of Experimental Medicine, Czech Academy of Sciences Vídeňská 1083 Prague Czech Republic
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157
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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: 823] [Impact Index Per Article: 164.6] [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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158
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Richard JP, Hussain U, Gross S, Taga A, Kouser M, Almad A, Campanelli JT, Bulte JWM, Maragakis NJ. Perfluorocarbon Labeling of Human Glial-Restricted Progenitors for 19 F Magnetic Resonance Imaging. Stem Cells Transl Med 2019; 8:355-365. [PMID: 30618148 PMCID: PMC6431733 DOI: 10.1002/sctm.18-0094] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2018] [Accepted: 11/21/2018] [Indexed: 12/20/2022] Open
Abstract
One of the fundamental limitations in assessing potential efficacy in Central Nervous System (CNS) transplantation of stem cells is the capacity for monitoring cell survival and migration noninvasively and longitudinally. Human glial‐restricted progenitor (hGRP) cells (Q‐Cells) have been investigated for their utility in providing neuroprotection following transplantation into models of amyotrophic lateral sclerosis (ALS) and have been granted a Food and Drug Administration (FDA) Investigational New Drug (IND) for intraspinal transplantation in ALS patients. Furthermore, clinical development of these cells for therapeutic use will rely on the ability to track the cells using noninvasive imaging methodologies as well as the verification that the transplanted GRPs have disease‐relevant activity. As a first step in development, we investigated the use of a perfluorocarbon (PFC) dual‐modal (19F magnetic resonance imaging [MRI] and fluorescence) tracer agent to label Q‐Cells in culture and following spinal cord transplantation. PFCs have a number of potential benefits that make them appealing for clinical use. They are quantitative, noninvasive, biologically inert, and highly specific. In this study, we developed optimized PFC labeling protocols for Q‐Cells and demonstrate that PFCs do not significantly alter the glial identity of Q‐Cells. We also show that PFCs do not interfere with the capacity for differentiation into astrocytes either in vitro or following transplantation into the ventral horn of the mouse spinal cord, and can be visualized in vivo by hot spot 19F MRI. These studies provide a foundation for further preclinical development of PFCs within the context of evaluating Q‐Cell transplantation in the brain and spinal cord of future ALS patients using 19F MRI. stem cells translational medicine2019;8:355–365
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Affiliation(s)
- Jean-Philippe Richard
- Department of Neurology, The Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Uzma Hussain
- Department of Neurology, The Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Sarah Gross
- Department of Neurology, The Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Arens Taga
- Department of Neurology, The Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Mehreen Kouser
- Russell H. Morgan Department of Radiology and Radiological Science, Division of MR Research, The Johns Hopkins University School of Medicine, Baltimore, Maryland, USA.,Cellular Imaging Section and Vascular Biology Program, Institute for Cell Engineering, The Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Akshata Almad
- Department of Neurology, The Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | | | - Jeff W M Bulte
- Russell H. Morgan Department of Radiology and Radiological Science, Division of MR Research, The Johns Hopkins University School of Medicine, Baltimore, Maryland, USA.,Cellular Imaging Section and Vascular Biology Program, Institute for Cell Engineering, The Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Nicholas J Maragakis
- Department of Neurology, The Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
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159
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Bulte J. Superparamagnetic iron oxides as MPI tracers: A primer and review of early applications. Adv Drug Deliv Rev 2019; 138:293-301. [PMID: 30552918 PMCID: PMC6449195 DOI: 10.1016/j.addr.2018.12.007] [Citation(s) in RCA: 92] [Impact Index Per Article: 18.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2018] [Revised: 11/12/2018] [Accepted: 12/11/2018] [Indexed: 02/07/2023]
Abstract
Magnetic particle imaging (MPI) has recently emerged as a non-invasive, whole body imaging technique that detects superparamagnetic iron oxide (SPIO) nanoparticles similar as those used in magnetic resonance imaging (MRI). Based on tracer "hot spot" detection instead of providing contrast on MRI scans, MPI has already proven to be truly quantitative. Without the presence of endogenous background signal, MPI can also be used in certain tissues where the endogenous MRI signal is too low to provide contrast. After an introduction to the history and simplified principles of MPI, this review focuses on early MPI applications including MPI cell tracking, multiplexed MPI, perfusion and tumor MPI, lung MPI, functional MPI, and MPI-guided hyperthermia. While it is too early to tell if MPI will become a mainstay imaging technique with the (theoretical) sensitivity that it promises, and if it can successfully compete with SPIO-based 1H MRI and perfluorocarbon-based 19F MRI, it provides unprecedented opportunities for exploring new nanoparticle-based imaging applications.
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Affiliation(s)
- J.W.M. Bulte
- Corresponding author at: Russell H. Morgan Department of Radiology and Radiological Science, Division of MR Research; Cellular Imaging Section and Vascular Biology Program, Institute for Cell Engineering, The Johns Hopkins University School of Medicine, 217 Traylor Bldg, 720 Rutland Ave, Baltimore, MD 21205
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160
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Clinical and Pre-clinical Methods for Quantifying Tumor Hypoxia. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2019; 1136:19-41. [PMID: 31201714 DOI: 10.1007/978-3-030-12734-3_2] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Hypoxia, a prevalent characteristic of most solid malignant tumors, contributes to diminished therapeutic responses and more aggressive phenotypes. The term hypoxia has two definitions. One definition would be a physiologic state where the oxygen partial pressure is below the normal physiologic range. For most normal tissues, the normal physiologic range is between 10 and 20 mmHg. Hypoxic regions develop when there is an imbalance between oxygen supply and demand. The impact of hypoxia on cancer therapeutics is significant: hypoxic tissue is 3× less radiosensitive than normoxic tissue, the impaired blood flow found in hypoxic tumor regions influences chemotherapy delivery, and the immune system is dependent on oxygen for functionality. Despite the clinical implications of hypoxia, there is not a universal, ideal method for quantifying hypoxia, particularly cycling hypoxia because of its complexity and heterogeneity across tumor types and individuals. Most standard imaging techniques can be modified and applied to measuring hypoxia and quantifying its effects; however, the benefits and challenges of each imaging modality makes imaging hypoxia case-dependent. In this chapter, a comprehensive overview of the preclinical and clinical methods for quantifying hypoxia is presented along with the advantages and disadvantages of each.
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161
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Pujales-Paradela R, Savić T, Brandariz I, Pérez-Lourido P, Angelovski G, Esteban-Gómez D, Platas-Iglesias C. Reinforced Ni(ii)-cyclam derivatives as dual1H/19F MRI probes. Chem Commun (Camb) 2019; 55:4115-4118. [DOI: 10.1039/c9cc01204d] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Extremely inert paramagnetic nickel(ii) complexes based on a cross-bridged cyclam platform present responses at the1H (CEST) and19F frequencies.
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Affiliation(s)
- Rosa Pujales-Paradela
- Centro de Investigacións Científicas Avanzadas (CICA) and Departamento de Química
- Facultade de Ciencias
- Universidade da Coruña
- 15071 A Coruña
- Spain
| | - Tanja Savić
- MR Neuroimaging Agents
- Max Planck Institute for Biological Cybernetics
- Tuebingen
- Germany
| | - Isabel Brandariz
- Centro de Investigacións Científicas Avanzadas (CICA) and Departamento de Química
- Facultade de Ciencias
- Universidade da Coruña
- 15071 A Coruña
- Spain
| | - Paulo Pérez-Lourido
- Departamento de Química Inorgánica
- Facultad de Ciencias, Universidade de Vigo
- As Lagoas
- Marcosende
- 36310 Pontevedra
| | - Goran Angelovski
- MR Neuroimaging Agents
- Max Planck Institute for Biological Cybernetics
- Tuebingen
- Germany
| | - David Esteban-Gómez
- Centro de Investigacións Científicas Avanzadas (CICA) and Departamento de Química
- Facultade de Ciencias
- Universidade da Coruña
- 15071 A Coruña
- Spain
| | - Carlos Platas-Iglesias
- Centro de Investigacións Científicas Avanzadas (CICA) and Departamento de Química
- Facultade de Ciencias
- Universidade da Coruña
- 15071 A Coruña
- Spain
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162
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Warneke J, Konieczka SZ, Hou GL, Aprà E, Kerpen C, Keppner F, Schäfer TC, Deckert M, Yang Z, Bylaska EJ, Johnson GE, Laskin J, Xantheas SS, Wang XB, Finze M. Properties of perhalogenated {closo-B10} and {closo-B11} multiply charged anions and a critical comparison with {closo-B12} in the gas and the condensed phase. Phys Chem Chem Phys 2019; 21:5903-5915. [DOI: 10.1039/c8cp05313h] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Dependence of electronic properties and reactivity of closo-borates with size and halogen substituent was investigated.
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163
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Toward 19F magnetic resonance thermometry: spin-lattice and spin-spin-relaxation times and temperature dependence of fluorinated drugs at 9.4 T. MAGNETIC RESONANCE MATERIALS IN PHYSICS BIOLOGY AND MEDICINE 2018; 32:51-61. [PMID: 30515642 DOI: 10.1007/s10334-018-0722-8] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/01/2018] [Revised: 10/11/2018] [Accepted: 11/21/2018] [Indexed: 12/26/2022]
Abstract
OBJECTIVE This study examines the influence of the environmental factor temperature on the 19F NMR characteristics of fluorinated compounds in phantom studies and in tissue. MATERIALS AND METHODS 19F MR mapping and MR spectroscopy techniques were used to characterize the 19F NMR characteristics of perfluoro-crown ether (PFCE), isoflurane, teriflunomide, and flupentixol. T1 and T2 mapping were performed, while temperature in the samples was changed (T = 20-60 °C) and monitored using fiber optic measurements. In tissue, T1 of PFCE nanoparticles was determined at physiological temperatures and compared with the T1-measured at room temperature. RESULTS Studies on PFCE, isoflurane, teriflunomide, and flupentixol showed a relationship between temperature and their physicochemical characteristics, namely, chemical shift, T1 and T2. T1 of PFCE nanoparticles was higher at physiological body temperatures compared to room temperature. DISCUSSION The impact of temperature on the 19F NMR parameters of fluorinated compounds demonstrated in this study not only opens a trajectory toward 19F MR-based thermometry, but also indicates the need for adapting MR sequence parameters according to environmental changes such as temperature. This will be an absolute requirement for detecting fluorinated compounds by 19F MR techniques in vivo.
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164
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Bulte JWM, Daldrup-Link HE. Clinical Tracking of Cell Transfer and Cell Transplantation: Trials and Tribulations. Radiology 2018; 289:604-615. [PMID: 30299232 PMCID: PMC6276076 DOI: 10.1148/radiol.2018180449] [Citation(s) in RCA: 71] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2018] [Revised: 07/09/2018] [Accepted: 07/18/2018] [Indexed: 12/29/2022]
Abstract
Cell therapy has provided unprecedented opportunities for tissue repair and cancer therapy. Imaging tools for in vivo tracking of therapeutic cells have entered the clinic to evaluate therapeutic cell delivery and retention in patients. Thus far, clinical cell tracking studies have been a mere proof of principle of the feasibility of cell detection. This review centers around the main clinical queries associated with cell therapy: Have cells been delivered correctly at the targeted site of injection? Are cells still alive, and, if so, how many? Are cells being rejected by the host, and, if so, how severe is the immune response? For stem cell therapeutics, have cells differentiated into downstream cell lineages? Is there cell proliferation including tumor formation? At present, clinical cell tracking trials have only provided information on immediate cell delivery and short-term cell retention. The next big question is if these cell tracking tools can improve the clinical management of the patients and, if so, by how much, for how many, and for whom; in addition, it must be determined whether tracking therapeutic cells in every patient is needed. To become clinically relevant, it must now be demonstrated how cell tracking techniques can inform patient treatment and affect clinical outcomes.
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Affiliation(s)
- Jeff W. M. Bulte
- From the Russell H. Morgan Department of Radiology and Radiological Science, Division of MR Research, Cellular Imaging Section and Vascular Biology Program, Institute for Cell Engineering, Departments of Chemical & Biomolecular Engineering, Biomedical Engineering, and Oncology, The Johns Hopkins University School of Medicine, 217 Traylor Bldg, 720 Rutland Ave, Baltimore, MD 21205 (J.W.M.B.); and Departments of Radiology, Molecular Imaging Program at Stanford (MIPS) and Pediatrics, Institute for Stem Cell Biology and Regenerative Medicine, Stanford University, Palo Alto, Calif (H.E.D.L.)
| | - Heike E. Daldrup-Link
- From the Russell H. Morgan Department of Radiology and Radiological Science, Division of MR Research, Cellular Imaging Section and Vascular Biology Program, Institute for Cell Engineering, Departments of Chemical & Biomolecular Engineering, Biomedical Engineering, and Oncology, The Johns Hopkins University School of Medicine, 217 Traylor Bldg, 720 Rutland Ave, Baltimore, MD 21205 (J.W.M.B.); and Departments of Radiology, Molecular Imaging Program at Stanford (MIPS) and Pediatrics, Institute for Stem Cell Biology and Regenerative Medicine, Stanford University, Palo Alto, Calif (H.E.D.L.)
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165
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Ladd ME, Bachert P, Meyerspeer M, Moser E, Nagel AM, Norris DG, Schmitter S, Speck O, Straub S, Zaiss M. Pros and cons of ultra-high-field MRI/MRS for human application. PROGRESS IN NUCLEAR MAGNETIC RESONANCE SPECTROSCOPY 2018; 109:1-50. [PMID: 30527132 DOI: 10.1016/j.pnmrs.2018.06.001] [Citation(s) in RCA: 264] [Impact Index Per Article: 44.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/06/2018] [Revised: 06/06/2018] [Accepted: 06/07/2018] [Indexed: 05/08/2023]
Abstract
Magnetic resonance imaging and spectroscopic techniques are widely used in humans both for clinical diagnostic applications and in basic research areas such as cognitive neuroimaging. In recent years, new human MR systems have become available operating at static magnetic fields of 7 T or higher (≥300 MHz proton frequency). Imaging human-sized objects at such high frequencies presents several challenges including non-uniform radiofrequency fields, enhanced susceptibility artifacts, and higher radiofrequency energy deposition in the tissue. On the other side of the scale are gains in signal-to-noise or contrast-to-noise ratio that allow finer structures to be visualized and smaller physiological effects to be detected. This review presents an overview of some of the latest methodological developments in human ultra-high field MRI/MRS as well as associated clinical and scientific applications. Emphasis is given to techniques that particularly benefit from the changing physical characteristics at high magnetic fields, including susceptibility-weighted imaging and phase-contrast techniques, imaging with X-nuclei, MR spectroscopy, CEST imaging, as well as functional MRI. In addition, more general methodological developments such as parallel transmission and motion correction will be discussed that are required to leverage the full potential of higher magnetic fields, and an overview of relevant physiological considerations of human high magnetic field exposure is provided.
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Affiliation(s)
- Mark E Ladd
- Medical Physics in Radiology, German Cancer Research Center (DKFZ), Heidelberg, Germany; Faculty of Medicine, University of Heidelberg, Heidelberg, Germany; Faculty of Physics and Astronomy, University of Heidelberg, Heidelberg, Germany; Erwin L. Hahn Institute for MRI, University of Duisburg-Essen, Essen, Germany.
| | - Peter Bachert
- Medical Physics in Radiology, German Cancer Research Center (DKFZ), Heidelberg, Germany; Faculty of Physics and Astronomy, University of Heidelberg, Heidelberg, Germany.
| | - Martin Meyerspeer
- Center for Medical Physics and Biomedical Engineering, Medical University of Vienna, Vienna, Austria; MR Center of Excellence, Medical University of Vienna, Vienna, Austria.
| | - Ewald Moser
- Center for Medical Physics and Biomedical Engineering, Medical University of Vienna, Vienna, Austria; MR Center of Excellence, Medical University of Vienna, Vienna, Austria.
| | - Armin M Nagel
- Medical Physics in Radiology, German Cancer Research Center (DKFZ), Heidelberg, Germany; Institute of Radiology, University Hospital Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Erlangen, Germany.
| | - David G Norris
- Donders Institute for Brain, Cognition and Behaviour, Radboud University Nijmegen, Nijmegen, Netherlands; Erwin L. Hahn Institute for MRI, University of Duisburg-Essen, Essen, Germany.
| | - Sebastian Schmitter
- Medical Physics in Radiology, German Cancer Research Center (DKFZ), Heidelberg, Germany; Physikalisch-Technische Bundesanstalt (PTB), Braunschweig and Berlin, Germany.
| | - Oliver Speck
- Department of Biomedical Magnetic Resonance, Otto-von-Guericke-University Magdeburg, Magdeburg, Germany; German Center for Neurodegenerative Diseases, Magdeburg, Germany; Center for Behavioural Brain Sciences, Magdeburg, Germany; Leibniz Institute for Neurobiology, Magdeburg, Germany.
| | - Sina Straub
- Medical Physics in Radiology, German Cancer Research Center (DKFZ), Heidelberg, Germany.
| | - Moritz Zaiss
- High-Field Magnetic Resonance Center, Max-Planck-Institute for Biological Cybernetics, Tübingen, Germany.
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Herynek V, Martinisková M, Bobrova Y, Gálisová A, Kotek J, Hermann P, Koucký F, Jirák D, Hájek M. Low-molecular-weight paramagnetic 19F contrast agents for fluorine magnetic resonance imaging. MAGNETIC RESONANCE MATERIALS IN PHYSICS BIOLOGY AND MEDICINE 2018; 32:115-122. [PMID: 30498883 PMCID: PMC6514088 DOI: 10.1007/s10334-018-0721-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/03/2018] [Revised: 11/20/2018] [Accepted: 11/21/2018] [Indexed: 12/24/2022]
Abstract
Objective 19F MRI requires biocompatible and non-toxic soluble contrast agents with high fluorine content and with suitable 19F relaxation times. Probes based on a DOTP chelate with 12 magnetically equivalent fluorine atoms (DOTP-tfe) and a lanthanide(III) ion shortening the relaxation times were prepared and tested. Methods Complexes of DOTP-tfe with trivalent paramagnetic Ce, Dy, Ho, Tm, and Yb ions were synthetized and characterized. 19F relaxation times were determined and compared to those of the La complex and of the empty ligand. In vitro and in vivo 19F MRI was performed at 4.7 T. Results 19F relaxation times strongly depended on the chelated lanthanide(III) ion. T1 ranged from 6.5 to 287 ms, T2 from 3.9 to 124.4 ms, and T2* from 1.1 to 3.1 ms. All complexes in combination with optimized sequences provided sufficient signal in vitro under conditions mimicking experiments in vivo (concentrations 1.25 mM, 15-min scanning time). As a proof of concept, two contrast agents were injected into the rat muscle; 19F MRI in vivo confirmed the in vivo applicability of the probe. Conclusion DOTP-based 19F probes showed suitable properties for in vitro and in vivo visualization and biological applications. The lanthanide(III) ions enabled us to shorten the relaxation times and to trim the probes according to the actual needs. Similar to the clinically approved Gd3+ chelates, this customized probe design ensures consistent biochemical properties and similar safety profiles.
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Affiliation(s)
- Vít Herynek
- Center for Advanced Preclinical Imaging, First Faculty of Medicine, Charles University, Salmovská 3, Prague, Czech Republic.
- MR-Unit, Department of Diagnostic and Interventional Radiology, Institute for Clinical and Experimental Medicine, Vídeňská 1958/9, Prague, Czech Republic.
| | - Marie Martinisková
- Department of Inorganic Chemistry, Faculty of Science, Charles University, Hlavova 2030, 12843, Prague 2, Czech Republic
| | - Yulia Bobrova
- Department of Low Temperature Physics, Faculty of Mathematics and Physics, Charles University, V Holešovičkách 2, Prague, Czech Republic
| | - Andrea Gálisová
- MR-Unit, Department of Diagnostic and Interventional Radiology, Institute for Clinical and Experimental Medicine, Vídeňská 1958/9, Prague, Czech Republic
| | - Jan Kotek
- Department of Inorganic Chemistry, Faculty of Science, Charles University, Hlavova 2030, 12843, Prague 2, Czech Republic
| | - Petr Hermann
- Department of Inorganic Chemistry, Faculty of Science, Charles University, Hlavova 2030, 12843, Prague 2, Czech Republic
| | - Filip Koucký
- Department of Inorganic Chemistry, Faculty of Science, Charles University, Hlavova 2030, 12843, Prague 2, Czech Republic
| | - Daniel Jirák
- MR-Unit, Department of Diagnostic and Interventional Radiology, Institute for Clinical and Experimental Medicine, Vídeňská 1958/9, Prague, Czech Republic
| | - Milan Hájek
- MR-Unit, Department of Diagnostic and Interventional Radiology, Institute for Clinical and Experimental Medicine, Vídeňská 1958/9, Prague, Czech Republic
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Rothe M, Jahn A, Weiss K, Hwang JH, Szendroedi J, Kelm M, Schrader J, Roden M, Flögel U, Bönner F. In vivo 19F MR inflammation imaging after myocardial infarction in a large animal model at 3 T. MAGNETIC RESONANCE MATERIALS IN PHYSICS BIOLOGY AND MEDICINE 2018; 32:5-13. [DOI: 10.1007/s10334-018-0714-8] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/18/2018] [Revised: 10/04/2018] [Accepted: 10/22/2018] [Indexed: 12/19/2022]
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Chapelin F, Capitini CM, Ahrens ET. Fluorine-19 MRI for detection and quantification of immune cell therapy for cancer. J Immunother Cancer 2018; 6:105. [PMID: 30305175 PMCID: PMC6180584 DOI: 10.1186/s40425-018-0416-9] [Citation(s) in RCA: 64] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2018] [Accepted: 09/21/2018] [Indexed: 01/01/2023] Open
Abstract
Over the past two decades, immune cell therapy has emerged as a potent treatment for multiple cancers, first through groundbreaking leukemia therapy, and more recently, by tackling solid tumors. Developing successful therapeutic strategies using live cells could benefit from the ability to rapidly determine their in vivo biodistribution and persistence. Assaying cell biodistribution is unconventional compared to traditional small molecule drug pharmacokinetic readouts used in the pharmaceutical pipeline, yet this information is critical towards understanding putative therapeutic outcomes and modes of action. Towards this goal, efforts are underway to visualize and quantify immune cell therapy in vivo using advanced magnetic resonance imaging (MRI) techniques. Cell labeling probes based on perfluorocarbon nanoemulsions, paired with fluorine-19 MRI detection, enables background-free quantification of cell localization and survival. Here, we highlight recent preclinical and clinical uses of perfluorocarbon probes and 19F MRI for adoptive cell transfer (ACT) studies employing experimental T lymphocytes, NK, PBMC, and dendritic cell therapies. We assess the forward looking potential of this emerging imaging technology to aid discovery and preclinical phases, as well as clinical trials. The limitations and barriers towards widespread adoption of this technology, as well as alternative imaging strategies, are discussed.
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Affiliation(s)
- Fanny Chapelin
- Department of Bioengineering, University of California San Diego, 2880 Torrey Pines Scenic Drive, La Jolla, CA, 92037, USA
| | - Christian M Capitini
- Department of Pediatrics and Carbone Cancer Center, University of Wisconsin School of Medicine and Public Health, 1111 Highland Avenue, Madison, WI, 53705, USA.
| | - Eric T Ahrens
- Department of Radiology, University of California of San Diego, 9500 Gilman Dr. #0695, La Jolla, CA, 92093-0695, USA.
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Lorton O, Hyacinthe JN, Desgranges S, Gui L, Klauser A, Celicanin Z, Crowe LA, Lazeyras F, Allémann E, Taulier N, Contino-Pépin C, Salomir R. Molecular oxygen loading in candidate theranostic droplets stabilized with biocompatible fluorinated surfactants: Particle size effect and application to in situ 19F MRI mapping of oxygen partial pressure. JOURNAL OF MAGNETIC RESONANCE (SAN DIEGO, CALIF. : 1997) 2018; 295:27-37. [PMID: 30096550 DOI: 10.1016/j.jmr.2018.07.019] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/08/2018] [Revised: 07/04/2018] [Accepted: 07/30/2018] [Indexed: 06/08/2023]
Abstract
OBJECTIVE Perfluorocarbon nano- and micron-sized emulsions are a new field of investigation in cancer treatment due to their ability to be used as imaging contrast agents, or as delivery vectors for pharmaceuticals. They also demonstrated capability to enhance the efficiency of high intensity focused ultrasound thermo-therapy. In the context of new biomedical applications we investigated perfluorooctyl bromide (PFOB) theranostic droplets using 19F NMR. Each droplet contains biocompatible fluorinated surfactants composed of a polar Tris(hydroxymethyl)aminomethane head unit and hydrophobic perfluorinated tail (abbreviated as F-TAC). The influence of the droplet size on the oxygen loading capacity was determined from longitudinal relaxation (T1) data of 19F NMR signal. MATERIAL AND METHODS Liquid PFOB and five samples of PFOB droplets of average diameter 0.177, 0.259, 1.43, 3.12 and 4.53 µm were tested with different oxygen levels. A dedicated gas exchange system was validated to maintain steady state oxygen concentrations, including a spatial gradient of oxygen concentration. A prototyped transmit-receive switchable 19F/1H quadrature coil was integrated on a 3 T clinical scanner. The coil is compatible with focused ultrasound sonication for future application. A spectroscopy FID inversion-recovery (IR) sequence was used to measure the T1 value per sample and per value of equilibrium oxygen pressure. Pixel wise, spatial T1 mapping was performed with magnetization prepared 2D gradient echo sequences in tissue mimicking gels doped with theranostic droplets. RESULTS Experimental data indicated that the longitudinal relaxation rate of 19F signal of the investigated theranostic droplets depended approximately linearly on the oxygen level and its slope decreased with the particle size according to a second order polynomial over the investigated range. This semi-empirical model was derived from general thermodynamics and weak electrostatic forces theory and fitted the experimental data within 0.75% precision. The capacity of oxygen transportation for the described theranostic droplets tended to that of pure PFOB, while micron-sized droplets lost up to 50% of this capacity. In a specific setup producing a steady state gradient of oxygen concentration, we demonstrated spatial mapping of oxygen pressure gradient of 6 kPa/mm with 1 mm in-plane resolution. CONCLUSION The size-tunable PFOB theranostic droplets stabilized with F-TAC surfactants could be characterized by 19F MRI in a clinical setup readily compatible with interventional in vivo studies under MR guidance. Current precision and spatial resolution of T1 mapping are promising. A potential challenge for further in vivo studies is the reduction of the imaging time.
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Affiliation(s)
- Orane Lorton
- Image Guided Interventions Laboratory, Faculty of Medicine, University of Geneva, Switzerland.
| | - Jean-Noël Hyacinthe
- Image Guided Interventions Laboratory, Faculty of Medicine, University of Geneva, Switzerland; School of Health Sciences, HES-SO // University of Applied Sciences and Arts of Western, Switzerland
| | - Stéphane Desgranges
- Image Guided Interventions Laboratory, Faculty of Medicine, University of Geneva, Switzerland; University of Avignon, CBSA-IBMM (UMR5247), Avignon, France
| | - Laura Gui
- Image Guided Interventions Laboratory, Faculty of Medicine, University of Geneva, Switzerland
| | - Antoine Klauser
- Department of Radiology and Medical Informatics, University of Geneva, Switzerland
| | - Zarko Celicanin
- Department of Radiological Physics, University Hospital of Basel, Switzerland
| | - Lindsey A Crowe
- Department of Radiology and Medical Informatics, University of Geneva, Switzerland
| | - François Lazeyras
- Department of Radiology and Medical Informatics, University of Geneva, Switzerland
| | - Eric Allémann
- School of Pharmaceutical Sciences, University of Geneva, University of Lausanne, Geneva, Switzerland
| | - Nicolas Taulier
- Sorbonne Universités, UPMC Univ Paris 06, CNRS, INSERM, Laboratoire d'Imagerie Biomédicale (LIB), F-75006 Paris, France
| | | | - Rares Salomir
- Image Guided Interventions Laboratory, Faculty of Medicine, University of Geneva, Switzerland; University Hospitals of Geneva, Radiology Department, Geneva, Switzerland
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Xu X, Zhang R, Liu F, Ping J, Wen X, Wang H, Wang K, Sun X, Zou H, Shen B, Wu L. 19F MRI in orthotopic cancer model via intratracheal administration of ανβ3-targeted perfluorocarbon nanoparticles. Nanomedicine (Lond) 2018; 13:2551-2562. [PMID: 30338723 DOI: 10.2217/nnm-2018-0051] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
Abstract
Aim: To demonstrate the feasibility of intratracheal administration in orthotopic lung cancer model with 19F MRI. Materials & methods: αvβ3-integrin targeting ability of the perfluorocarbon (PFC) nanoparticles was tested. Orthotopic lung cancer model was established in rabbits under computed tomography guidance. αvβ3-targeted PFC nanoparticles were administrated intratracheally or intravenously, and 19F MRI was performed before and up to 24 h after administration. Results: The targeted PFC nanoparticles could bind with αvβ3-integrin. PFC concentrations in the tumors of intratracheal group after administration were significantly higher than intravenous group. Conclusion: Intratracheal administration of PFC nanoparticles was shown to be feasible and efficacious. 19F MRI with αvβ3-targeted PFC nanoparticles provided quantitative assessment of nanoparticles distribution and tumor angiogenesis.
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Affiliation(s)
- Xiuan Xu
- Molecular Imaging Research Center (MIRC), Harbin Medical University, Harbin, Heilongjiang, PR China
- TOF-PET/CT/MR center, The Fourth Hospital of Harbin Medical University, Harbin, Heilongjiang, PR China
- Department of Medical Imaging, The Fourth Hospital of Harbin Medical University, Harbin, Heilongjiang, PR China
| | - Ruixin Zhang
- Molecular Imaging Research Center (MIRC), Harbin Medical University, Harbin, Heilongjiang, PR China
| | - Fang Liu
- Department of Medical Imaging, The Fourth Hospital of Harbin Medical University, Harbin, Heilongjiang, PR China
| | - Jiaqi Ping
- Molecular Imaging Research Center (MIRC), Harbin Medical University, Harbin, Heilongjiang, PR China
- TOF-PET/CT/MR center, The Fourth Hospital of Harbin Medical University, Harbin, Heilongjiang, PR China
| | - Xiaofei Wen
- Molecular Imaging Research Center (MIRC), Harbin Medical University, Harbin, Heilongjiang, PR China
- TOF-PET/CT/MR center, The Fourth Hospital of Harbin Medical University, Harbin, Heilongjiang, PR China
| | - Hongbin Wang
- Molecular Imaging Research Center (MIRC), Harbin Medical University, Harbin, Heilongjiang, PR China
| | - Kai Wang
- Molecular Imaging Research Center (MIRC), Harbin Medical University, Harbin, Heilongjiang, PR China
- TOF-PET/CT/MR center, The Fourth Hospital of Harbin Medical University, Harbin, Heilongjiang, PR China
| | - Xilin Sun
- Molecular Imaging Research Center (MIRC), Harbin Medical University, Harbin, Heilongjiang, PR China
- TOF-PET/CT/MR center, The Fourth Hospital of Harbin Medical University, Harbin, Heilongjiang, PR China
| | - Hongyan Zou
- Molecular Imaging Research Center (MIRC), Harbin Medical University, Harbin, Heilongjiang, PR China
- TOF-PET/CT/MR center, The Fourth Hospital of Harbin Medical University, Harbin, Heilongjiang, PR China
| | - Baozhong Shen
- Molecular Imaging Research Center (MIRC), Harbin Medical University, Harbin, Heilongjiang, PR China
- TOF-PET/CT/MR center, The Fourth Hospital of Harbin Medical University, Harbin, Heilongjiang, PR China
| | - Lina Wu
- Molecular Imaging Research Center (MIRC), Harbin Medical University, Harbin, Heilongjiang, PR China
- TOF-PET/CT/MR center, The Fourth Hospital of Harbin Medical University, Harbin, Heilongjiang, PR China
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Fathollahipour S, Patil PS, Leipzig ND. Oxygen Regulation in Development: Lessons from Embryogenesis towards Tissue Engineering. Cells Tissues Organs 2018; 205:350-371. [PMID: 30273927 DOI: 10.1159/000493162] [Citation(s) in RCA: 49] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/11/2018] [Indexed: 12/19/2022] Open
Abstract
Oxygen is a vital source of energy necessary to sustain and complete embryonic development. Not only is oxygen the driving force for many cellular functions and metabolism, but it is also involved in regulating stem cell fate, morphogenesis, and organogenesis. Low oxygen levels are the naturally preferred microenvironment for most processes during early development and mainly drive proliferation. Later on, more oxygen and also nutrients are needed for organogenesis and morphogenesis. Therefore, it is critical to maintain oxygen levels within a narrow range as required during development. Modulating oxygen tensions is performed via oxygen homeostasis mainly through the function of hypoxia-inducible factors. Through the function of these factors, oxygen levels are sensed and regulated in different tissues, starting from their embryonic state to adult development. To be able to mimic this process in a tissue engineering setting, it is important to understand the role and levels of oxygen in each developmental stage, from embryonic stem cell differentiation to organogenesis and morphogenesis. Taking lessons from native tissue microenvironments, researchers have explored approaches to control oxygen tensions such as hemoglobin-based, perfluorocarbon-based, and oxygen-generating biomaterials, within synthetic tissue engineering scaffolds and organoids, with the aim of overcoming insufficient or nonuniform oxygen levels and nutrient supply.
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Affiliation(s)
| | - Pritam S Patil
- Department of Chemical and Biomolecular Engineering, University of Akron, Akron, Ohio, USA
| | - Nic D Leipzig
- Department of Chemical and Biomolecular Engineering, University of Akron, Akron, Ohio,
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172
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Towards Ni(II) complexes with spin switches for 19F MR-based pH sensing. MAGNETIC RESONANCE MATERIALS IN PHYSICS BIOLOGY AND MEDICINE 2018; 32:89-96. [DOI: 10.1007/s10334-018-0698-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/01/2018] [Revised: 07/23/2018] [Accepted: 08/02/2018] [Indexed: 01/09/2023]
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173
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Hövener JB, Pravdivtsev AN, Kidd B, Bowers CR, Glöggler S, Kovtunov KV, Plaumann M, Katz-Brull R, Buckenmaier K, Jerschow A, Reineri F, Theis T, Shchepin RV, Wagner S, Bhattacharya P, Zacharias NM, Chekmenev EY. Parahydrogen-Based Hyperpolarization for Biomedicine. Angew Chem Int Ed Engl 2018; 57:11140-11162. [PMID: 29484795 PMCID: PMC6105405 DOI: 10.1002/anie.201711842] [Citation(s) in RCA: 219] [Impact Index Per Article: 36.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2017] [Revised: 02/14/2018] [Indexed: 12/22/2022]
Abstract
Magnetic resonance (MR) is one of the most versatile and useful physical effects used for human imaging, chemical analysis, and the elucidation of molecular structures. However, its full potential is rarely used, because only a small fraction of the nuclear spin ensemble is polarized, that is, aligned with the applied static magnetic field. Hyperpolarization methods seek other means to increase the polarization and thus the MR signal. A unique source of pure spin order is the entangled singlet spin state of dihydrogen, parahydrogen (pH2 ), which is inherently stable and long-lived. When brought into contact with another molecule, this "spin order on demand" allows the MR signal to be enhanced by several orders of magnitude. Considerable progress has been made in the past decade in the area of pH2 -based hyperpolarization techniques for biomedical applications. It is the goal of this Review to provide a selective overview of these developments, covering the areas of spin physics, catalysis, instrumentation, preparation of the contrast agents, and applications.
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Affiliation(s)
- Jan-Bernd Hövener
- Section Biomedical Imaging, Molecular Imaging North Competence Center (MOIN CC), Department of Radiology and Neuroradiology, University Hospital Schleswig-Holstein, Kiel University, Am Botanischen Garten 14, 24118, Kiel, Germany
| | - Andrey N Pravdivtsev
- Section Biomedical Imaging, Molecular Imaging North Competence Center (MOIN CC), Department of Radiology and Neuroradiology, University Hospital Schleswig-Holstein, Kiel University, Am Botanischen Garten 14, 24118, Kiel, Germany
| | - Bryce Kidd
- Department of Chemistry and Biochemistry, Southern Illinois University, Carbondale, IL, 62901, USA
| | - C Russell Bowers
- Department of Chemistry, University of Florida, Gainesville, FL, 32611, USA
| | - Stefan Glöggler
- Max Planck Institute for Biophysical Chemistry, Am Fassberg 11, 37077, Göttingen, Germany
- Center for Biostructural Imaging of Neurodegeneration, Von-Siebold-Strasse 3A, 37075, Göttingen, Germany
| | - Kirill V Kovtunov
- International Tomography Center SB RAS, 630090, Novosibirsk, Russia
- Department of Natural Sciences, Novosibirsk State University, Pirogova St. 2, 630090, Novosibirsk, Russia
| | - Markus Plaumann
- Department of Biometry and Medical Informatics, Otto-von-Guericke University of Magdeburg, Leipziger Strasse 44, 39120, Magdeburg, Germany
| | - Rachel Katz-Brull
- Department of Radiology, Hadassah-Hebrew University Medical Center, Jerusalem, Israel
| | - Kai Buckenmaier
- Magnetic resonance center, Max Planck Institute for Biological Cybernetics, Tuebingen, Germany
| | - Alexej Jerschow
- Department of Chemistry, New York University, 100 Washington Sq. East, New York, NY, 10003, USA
| | - Francesca Reineri
- Department of Molecular Biotechnology and Health Sciences, University of Torino, via Nizza 52, Torino, Italy
| | - Thomas Theis
- Department of Chemistry & Department of Physics, Duke University, Durham, NC, 27708, USA
| | - Roman V Shchepin
- Vanderbilt University Institute of Imaging Science (VUIIS), Department of Radiology and Radiological Sciences, 1161 21st Ave South, MCN AA-1105, Nashville, TN, 37027, USA
| | - Shawn Wagner
- Biomedical Imaging Research Institute, Cedars Sinai Medical Center, Los Angeles, CA, 90048, USA
| | - Pratip Bhattacharya
- Department of Cancer Systems Imaging, University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA
| | - Niki M Zacharias
- Department of Cancer Systems Imaging, University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA
| | - Eduard Y Chekmenev
- Russian Academy of Sciences (RAS), Leninskiy Prospekt 14, Moscow, 119991, Russia
- Department of Chemistry, Karmanos Cancer Institute (KCI) and Integrative Biosciences (Ibio), Wayne State University, Detroit, MI, 48202, USA
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174
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Quantitative 19F MRI of perfluoro-15-crown-5-ether using uniformity correction of the spin excitation and signal reception. MAGNETIC RESONANCE MATERIALS IN PHYSICS BIOLOGY AND MEDICINE 2018; 32:25-36. [DOI: 10.1007/s10334-018-0696-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/03/2018] [Revised: 07/10/2018] [Accepted: 07/23/2018] [Indexed: 12/26/2022]
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175
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Simkins JW, Stewart PS, Seymour JD. Spatiotemporal mapping of oxygen in a microbially-impacted packed bed using 19F Nuclear magnetic resonance oximetry. JOURNAL OF MAGNETIC RESONANCE (SAN DIEGO, CALIF. : 1997) 2018; 293:123-133. [PMID: 29940412 PMCID: PMC6047901 DOI: 10.1016/j.jmr.2018.06.008] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/12/2018] [Revised: 06/12/2018] [Accepted: 06/13/2018] [Indexed: 06/08/2023]
Abstract
19F magnetic resonance has been used in the medical field for quantifying oxygenation in blood, tissues, and tumors. The 19F NMR oximetry technique exploits the affinity of molecular oxygen for liquid fluorocarbon phases, and the resulting linear dependence of 19F spin-lattice relaxation rate R1 on local oxygen concentration. Bacterial biofilms, aggregates of bacteria encased in a self-secreted matrix of extracellular polymers, are important in environmental, industrial, and clinical settings and oxygen gradients represent a critical determinant of biofilm function. However, measurement of oxygen distribution in biofilms and biofouled porous media is difficult. Here the ability of 19F NMR oximetry to accurately track oxygen profile development in microbial impacted packed bed systems without impacting oxygen transport is demonstrated. Time-stable and inert fluorocarbon containing particles are designed which act as oxygen reporters in porous media systems. Particles are generated by emulsifying and entrapping perfluorooctylbromide (PFOB) into alginate gel, resulting in oxygen-sensing alginate beads that are then used as the solid matrix of the packed bed. 19F oxygenation maps, when combined with 1H velocity maps, allow for insight into the interplay between fluid dynamics and oxygen transport phenomena in these complex biofouled systems. Spatial maps of oxygen consumption rate constants are calculated. The growth characteristics of two bacteria, a non-biofilm forming Escherichia coli and Staphylococcus epidermidis, a strong biofilm-former, are used to demonstrate the novel data provided by the method.
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Affiliation(s)
- Jeffrey W Simkins
- Center for Biofilm Engineering, Montana State University, 366 Barnard Hall, Bozeman, MT 59715, United States; Department of Chemical and Biological Engineering, Montana State University, 306 Cobleigh Hall, Bozeman, MT 59715, United States.
| | - Philip S Stewart
- Center for Biofilm Engineering, Montana State University, 366 Barnard Hall, Bozeman, MT 59715, United States; Department of Chemical and Biological Engineering, Montana State University, 306 Cobleigh Hall, Bozeman, MT 59715, United States.
| | - Joseph D Seymour
- Center for Biofilm Engineering, Montana State University, 366 Barnard Hall, Bozeman, MT 59715, United States; Department of Chemical and Biological Engineering, Montana State University, 306 Cobleigh Hall, Bozeman, MT 59715, United States.
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176
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Iima R, Takegami S, Konishi A, Tajima S, Minematsu N, Kitade T. Thermal Behavior of 19F Nuclear Magnetic Resonance Signal of 19F-Containing Compound in Lipid Nano-Emulsion for Potential Tumor Diagnosis. AAPS PharmSciTech 2018; 19:2679-2686. [PMID: 29943279 DOI: 10.1208/s12249-018-1102-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2018] [Accepted: 06/07/2018] [Indexed: 11/30/2022] Open
Abstract
We developed carriers of a 19F magnetic resonance imaging (19F MRI) agent, capable of responding to the temperature difference for cancer diagnosis. The carriers were based on high melting point (mp) neutral lipids, namely, tripalmitin (TPT) and tristearin (TSR) and triarachidin (TAC). Lipid nano-emulsions (LNEs) containing a fluorine compound, i.e., a modified α-tocopherol (19F-TP), were respectively prepared as TPT-LNE, TSR-LNE, TAC-LNE1, and TAC-LNE2 and studied by 19F NMR spectroscopy. In LNE prepared with soybean oil as a control, the full width at half maximum (FWHM) values of the 19F NMR signal of 19F-TP remained constant at 25, 37, and 42°C, while those of the LNEs prepared from a neutral lipid with a high mp showed a sharp decrease between 25 and 37°C. The magnitude of the decrease followed the order: TPT-LNE < TSR-LNE < TAC-LNE1. However, TAC-LNE2, for which the amount of encapsulated 19F-TP was one third less than that of TAC-LNE1, showed a sharp decline in the FWHM between 37 and 42°C. To examine these changes, the 19F spin-lattice (T1) and spin-spin (T2) relaxation times of 19F-TP were measured. TAC-LNE2 in particular showed a substantial change in its T2 value between 37 and 42°C compared with the change of its T1 value. This result was attributed to activation of the molecular motion of 19F-TP in TAC-LNE2 from 37 to 42°C. Thus, TAC-LNE showed potential for use as a carrier for cancer diagnosis using 19F MRI.
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177
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Hövener J, Pravdivtsev AN, Kidd B, Bowers CR, Glöggler S, Kovtunov KV, Plaumann M, Katz‐Brull R, Buckenmaier K, Jerschow A, Reineri F, Theis T, Shchepin RV, Wagner S, Bhattacharya P, Zacharias NM, Chekmenev EY. Parawasserstoff‐basierte Hyperpolarisierung für die Biomedizin. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201711842] [Citation(s) in RCA: 48] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Jan‐Bernd Hövener
- Sektion Biomedizinische Bildgebung, Molecular Imaging North Competence Center (MOIN CC) Klinik für Radiologie und Neuroradiologie Universitätsklinikum Schleswig-Holstein, Christian-Albrechts-Universität Kiel Am Botanischen Garten 14 24118 Kiel Deutschland
| | - Andrey N. Pravdivtsev
- Sektion Biomedizinische Bildgebung, Molecular Imaging North Competence Center (MOIN CC) Klinik für Radiologie und Neuroradiologie Universitätsklinikum Schleswig-Holstein, Christian-Albrechts-Universität Kiel Am Botanischen Garten 14 24118 Kiel Deutschland
| | - Bryce Kidd
- Department of Chemistry and Biochemistry Southern Illinois University Carbondale IL 62901 USA
| | - C. Russell Bowers
- Department of Chemistry University of Florida Gainesville FL 32611 USA
| | - Stefan Glöggler
- Max Planck-Institut für Biophysikalische Chemie Am Fassberg 11 37077 Göttingen Deutschland
- Center for Biostructural Imaging of Neurodegeneration Von-Siebold-Straße 3A 37075 Göttingen Deutschland
| | - Kirill V. Kovtunov
- International Tomography Center SB RAS 630090 Novosibirsk Russland
- Department of Natural Sciences Novosibirsk State University Pirogova St. 2 630090 Novosibirsk Russland
| | - Markus Plaumann
- Institut für Biometrie und Medizinische Informatik Otto-von-Guericke-Universität Magdeburg Leipziger Straße 44 39120 Magdeburg Deutschland
| | - Rachel Katz‐Brull
- Department of Radiology Hadassah-Hebrew University Medical Center Jerusalem Israel
| | - Kai Buckenmaier
- Magnetresonanz-Zentrum Max Planck-Institut für biologische Kybernetik Tübingen Deutschland
| | - Alexej Jerschow
- Department of Chemistry New York University 100 Washington Sq. East New York NY 10003 USA
| | - Francesca Reineri
- Department of Molecular Biotechnology and Health Sciences University of Torino via Nizza 52 Torino Italien
| | - Thomas Theis
- Department of Chemistry & Department of Physics Duke University Durham NC 27708 USA
| | - Roman V. Shchepin
- Vanderbilt University Institute of Imaging Science (VUIIS) Department of Radiology and Radiological Sciences 1161 21st Ave South, MCN AA-1105 Nashville TN 37027 USA
| | - Shawn Wagner
- Biomedical Imaging Research Institute Cedars Sinai Medical Center Los Angeles CA 90048 USA
| | - Pratip Bhattacharya
- Department of Cancer Systems Imaging University of Texas MD Anderson Cancer Center Houston TX 77030 USA
| | - Niki M. Zacharias
- Department of Cancer Systems Imaging University of Texas MD Anderson Cancer Center Houston TX 77030 USA
| | - Eduard Y. Chekmenev
- Vanderbilt University Institute of Imaging Science (VUIIS) Department of Radiology and Radiological Sciences 1161 21st Ave South, MCN AA-1105 Nashville TN 37027 USA
- Russian Academy of Sciences (RAS) Leninskiy Prospekt 14 Moscow 119991 Russland
- Department of Chemistry, Karmanos Cancer Institute (KCI) and Integrative Biosciences (Ibio) Wayne State University Detroit MI 48202 USA
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178
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Bernarding J, Euchner F, Bruns C, Ringleb R, Müller D, Trantzschel T, Bargon J, Bommerich U, Plaumann M. Low-cost LED-based Photo-CIDNP Enables Biocompatible Hyperpolarization of 19 F for NMR and MRI at 7 T and 4.7 T. Chemphyschem 2018; 19:2453-2456. [PMID: 29944199 PMCID: PMC6220778 DOI: 10.1002/cphc.201800570] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2018] [Indexed: 11/09/2022]
Abstract
Substrates containing 19 F can serve as background-free reporter molecules for NMR and MRI. However, in vivo applications are still limited due to the lower signal-to-noise ratio (SNR) when compared with 1 H NMR. Although hyperpolarization can increase the SNR, to date, only photo-chemically induced dynamic nuclear polarization (photo-CIDNP) allows for hyperpolarization without harmful metal catalysts. Photo-CIDNP was shown to significantly enhance 19 F NMR signals of 3-fluoro-DL-tyrosine in aqueous solution using flavins as photosensitizers. However, lasers were used for photoexcitation, which is expensive and requires appropriate protection procedures in a medical or lab environment. Herein, we report 19 F MR hyperpolarization at 4.7 T and 7 T with a biocompatible system using a low-cost and easy-to-handle LED-based set-up. First hyperpolarized 19 F MR images could be acquired, because photo-CIDNP enabled repetitive hyperpolarization without adding new substrates.
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Affiliation(s)
- Johannes Bernarding
- Institute for Biometrics and Medical Informatics, Otto-von-Guericke University of Magdeburg, Leipziger Strasse 44, 39120, Magdeburg, Germany
| | - Frederike Euchner
- Institute for Biometrics and Medical Informatics, Otto-von-Guericke University of Magdeburg, Leipziger Strasse 44, 39120, Magdeburg, Germany
| | - Christian Bruns
- Institute for Biometrics and Medical Informatics, Otto-von-Guericke University of Magdeburg, Leipziger Strasse 44, 39120, Magdeburg, Germany
| | - Rainer Ringleb
- Institute for Biometrics and Medical Informatics, Otto-von-Guericke University of Magdeburg, Leipziger Strasse 44, 39120, Magdeburg, Germany
| | - Darius Müller
- Institute for Biometrics and Medical Informatics, Otto-von-Guericke University of Magdeburg, Leipziger Strasse 44, 39120, Magdeburg, Germany
| | - Thomas Trantzschel
- Institute for Biometrics and Medical Informatics, Otto-von-Guericke University of Magdeburg, Leipziger Strasse 44, 39120, Magdeburg, Germany
| | - Joachim Bargon
- Institute for Physical and Theoretical Chemistry, University of Bonn, Wegelerstr. 12, 53115, Bonn, Germany
| | - Ute Bommerich
- Institute for Biometrics and Medical Informatics, Otto-von-Guericke University of Magdeburg, Leipziger Strasse 44, 39120, Magdeburg, Germany
| | - Markus Plaumann
- Institute for Biometrics and Medical Informatics, Otto-von-Guericke University of Magdeburg, Leipziger Strasse 44, 39120, Magdeburg, Germany
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179
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Peng Q, Li Y, Bo S, Yuan Y, Yang Z, Chen S, Zhou X, Jiang ZX. Paramagnetic nanoemulsions with unified signals for sensitive 19F MRI cell tracking. Chem Commun (Camb) 2018; 54:6000-6003. [PMID: 29796466 DOI: 10.1039/c8cc02938e] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
As a promising cell tracking technology, 19F MRI suffers from low sensitivity. Here, fluorinated nanoemulsions with a unified 19F signal and paramagnetic relaxation enhancement were developed as 19F MRI cellular tracers with high stability, size controllability, biocompatibility, cellular uptake, and dual-modality for sensitive in vivo RAW264.7 cell tracking.
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Affiliation(s)
- Qiaoli Peng
- Hubei Province Engineering and Technology Research Center for Fluorinated Pharmaceuticals and School of Pharmaceutical Sciences, Wuhan University, Wuhan 430071, China.
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180
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Bo S, Yuan Y, Chen Y, Yang Z, Chen S, Zhou X, Jiang ZX. In vivo drug tracking with 19F MRI at therapeutic dose. Chem Commun (Camb) 2018; 54:3875-3878. [PMID: 29594281 DOI: 10.1039/c7cc09898g] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Tracking drugs with 19F MRI would be beneficial for developing theranostics and optimizing drug therapy. To this end, a fluorinated dendritic amphiphile with high 19F MRI sensitivity and biocompatibility has been developed for 19F MRI tracking of doxorubicin (DOX)-loaded liposomes in mice, which may provide an effective platform to in vivo trace various drugs with 19F MRI.
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Affiliation(s)
- Shaowei Bo
- Hubei Province Engineering and Technology Research Center for Fluorinated Pharmaceuticals and School of Pharmaceutical Sciences, Wuhan University, Wuhan 430071, China.
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181
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Huang P, Guo W, Yang G, Song H, Wang Y, Wang C, Kong D, Wang W. Fluorine Meets Amine: Reducing Microenvironment-Induced Amino-Activatable Nanoprobes for 19F-Magnetic Resonance Imaging of Biothiols. ACS APPLIED MATERIALS & INTERFACES 2018; 10:18532-18542. [PMID: 29775280 DOI: 10.1021/acsami.8b03764] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
19F-magnetic resonance imaging (MRI) is of great significance for noninvasive imaging and detection of various diseases. However, the main obstacle in the application of 19F-MRI agents stems from the unmet signal sensitivity due to the poor water solubility and restricted mobility of segments with high number of fluorine atoms. Herein, we report a kind of intracellular reducing microenvironment-induced amino-activatable 19F-MRI nanoprobe, which can be used for specific imaging of biothiols. In principle, the nanoprobe has an initial architecture of hydrophobic core, where the trifluoromethyl-containing segments are compactly packed and 19F NMR/MRI signals are quenched ("OFF" state). Upon encountering sulfydryl, the strong electron-withdrawing 2,4-dinitrobenzenesulfonyl groups are excised to recover secondary amino groups, whose p Ka is proved to be 7.21. As a consequence, the molecular weight loss of the hydrophobic segment and the protonation of amino groups induce significant disturbance of hydrophilic/hydrophobic balance, leading to the disassembly of the nanoprobes and regain of spin-spin relaxation and 19F NMR/MRI signals ("ON" state, T2 up to 296 ± 5.3 ms). This nanoprobe shows high sensitivity and selectivity to biothiols, enabling intracellular and intratumoral imaging of glutathione. Our study not only provides a new nanoprobe candidate for biothiols imaging in vivo but also a promising strategy for the molecular design of real water-soluble and highly sensitive 19F-MRI nanoprobes.
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Affiliation(s)
- Pingsheng Huang
- Tianjin Key Laboratory of Biomaterial Research, Institute of Biomedical Engineering , Chinese Academy of Medical Sciences and Peking Union Medical College , Tianjin 300192 , P. R. China
| | - Weisheng Guo
- Laboratory of Controllable Nanopharmaceuticals, Chinese Academy of Sciences (CAS) Center for Excellence in Nanoscience and CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety , National Center for Nanoscience and Technology of China , Beijing 100190 , P. R. China
| | - Guang Yang
- Department of Polymer Science and Technology, School of Chemical Engineering and Technology , Tianjin University , Tianjin 300072 , P. R. China
| | - Huijuan Song
- Tianjin Key Laboratory of Biomaterial Research, Institute of Biomedical Engineering , Chinese Academy of Medical Sciences and Peking Union Medical College , Tianjin 300192 , P. R. China
| | - Yuqing Wang
- Laboratory of Controllable Nanopharmaceuticals, Chinese Academy of Sciences (CAS) Center for Excellence in Nanoscience and CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety , National Center for Nanoscience and Technology of China , Beijing 100190 , P. R. China
| | - Chun Wang
- Tianjin Key Laboratory of Biomaterial Research, Institute of Biomedical Engineering , Chinese Academy of Medical Sciences and Peking Union Medical College , Tianjin 300192 , P. R. China
- Department of Biomedical Engineering , University of Minnesota , Minneapolis , Minnesota 55455 , United States
| | - Deling Kong
- Tianjin Key Laboratory of Biomaterial Research, Institute of Biomedical Engineering , Chinese Academy of Medical Sciences and Peking Union Medical College , Tianjin 300192 , P. R. China
| | - Weiwei Wang
- Tianjin Key Laboratory of Biomaterial Research, Institute of Biomedical Engineering , Chinese Academy of Medical Sciences and Peking Union Medical College , Tianjin 300192 , P. R. China
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182
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Peterson KL, Srivastava K, Pierre VC. Fluorinated Paramagnetic Complexes: Sensitive and Responsive Probes for Magnetic Resonance Spectroscopy and Imaging. Front Chem 2018; 6:160. [PMID: 29876342 PMCID: PMC5974164 DOI: 10.3389/fchem.2018.00160] [Citation(s) in RCA: 52] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2018] [Accepted: 04/20/2018] [Indexed: 12/11/2022] Open
Abstract
Fluorine magnetic resonance spectroscopy (MRS) and magnetic resonance imaging (MRI) of chemical and physiological processes is becoming more widespread. The strength of this technique comes from the negligible background signal in in vivo19F MRI and the large chemical shift window of 19F that enables it to image concomitantly more than one marker. These same advantages have also been successfully exploited in the design of responsive 19F probes. Part of the recent growth of this technique can be attributed to novel designs of 19F probes with improved imaging parameters due to the incorporation of paramagnetic metal ions. In this review, we provide a description of the theories and strategies that have been employed successfully to improve the sensitivity of 19F probes with paramagnetic metal ions. The Bloch-Wangsness-Redfield theory accurately predicts how molecular parameters such as internuclear distance, geometry, rotational correlation times, as well as the nature, oxidation state, and spin state of the metal ion affect the sensitivity of the fluorine-based probes. The principles governing the design of responsive 19F probes are subsequently described in a "how to" guide format. Examples of such probes and their advantages and disadvantages are highlighted through a synopsis of the literature.
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Affiliation(s)
- Katie L Peterson
- Department of Chemistry, Bemidji State University, Bemidji, MN, United States
| | - Kriti Srivastava
- Department of Chemistry, University of Minnesota, Minneapolis, MN, United States
| | - Valérie C Pierre
- Department of Chemistry, University of Minnesota, Minneapolis, MN, United States
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183
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Moonshi SS, Zhang C, Peng H, Puttick S, Rose S, Fisk NM, Bhakoo K, Stringer BW, Qiao GG, Gurr PA, Whittaker AK. A unique 19F MRI agent for the tracking of non phagocytic cells in vivo. NANOSCALE 2018; 10:8226-8239. [PMID: 29682654 DOI: 10.1039/c8nr00703a] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
There is currently intense interest in new methods for understanding the fate of therapeutically-relevant cells, such as mesenchymal stem cells (MSCs). The absence of a confounding background signal and consequent unequivocal assignment makes 19F MRI one of the most attractive modalities for the tracking of injected cells in vivo. We describe here the synthesis of novel partly-fluorinated polymeric nanoparticles with small size and high fluorine content as MRI agents. The polymers, constructed from perfluoropolyether methacrylate (PFPEMA) and oligo(ethylene glycol) methacrylate (OEGMA) have favourable cell uptake profiles and excellent MRI performance. To facilitate cell studies the polymer was further conjugated with a fluorescent dye creating a dual-modal imaging agent. The efficacy of labelling of MSCs was assessed using 19F NMR, flow cytometry and confocal microscopy. The labelling efficiency of 2.6 ± 0.1 × 1012 19F atoms per cell, and viability of >90% demonstrates high uptake and good tolerance by the cells. This loading translates to a minimum 19F MRI detection sensitivity of ∼7.4 × 103 cells per voxel. Importantly, preliminary in vivo data demonstrate that labelled cells can be readily detected within a short acquisition scan period (12 minutes). Hence, these copolymers show outstanding potential for 19F MRI cellular tracking and for quantification of non-phagocytic and therapeutically-relevant cells in vivo.
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Affiliation(s)
- Shehzahdi S Moonshi
- Australian Institute for Bioengineering and Nanotechnology and ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, The University of Queensland, QLD 4072, Australia.
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184
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Affiliation(s)
- Jeff W M Bulte
- Johns Hopkins University School of Medicine, Baltimore, MD, USA.
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185
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McMahon MT, Bulte JWM. Two decades of dendrimers as versatile MRI agents: a tale with and without metals. WILEY INTERDISCIPLINARY REVIEWS. NANOMEDICINE AND NANOBIOTECHNOLOGY 2018; 10:e1496. [PMID: 28895298 PMCID: PMC5989322 DOI: 10.1002/wnan.1496] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/30/2017] [Revised: 07/25/2017] [Accepted: 08/02/2017] [Indexed: 12/24/2022]
Abstract
Dendrimers or dendritic polymers are a class of compounds with great potential for nanomedical use. Some of their properties, including their rigidity, low polydispersity and the ease with which their surfaces can be modified make them particularly well suited for use as MRI diagnostic or theranostic agents. For the past 20 years, researchers have recognized this potential and refined dendrimer formulations to optimize these nanocarriers for a host of MRI applications, including blood pool imaging agents, lymph node imaging agents, tumor-targeted theranostic agents and cell tracking agents. This review summarizes the various types of dendrimers according to the type of MR contrast they can provide. This includes the metallic T1 , T2 and paraCEST imaging agents, and the non-metallic diaCEST and fluorinated (19 F) heteronuclear imaging agents. This article is categorized under: Diagnostic Tools > In Vivo Nanodiagnostics and Imaging Implantable Materials and Surgical Technologies > Nanomaterials and Implants.
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Affiliation(s)
- Michael T. McMahon
- The Russell H. Morgan Department of Radiology and Radiological Science, Division of MR Research, The Johns Hopkins University School of Medicine, Baltimore, MD, USA
- F. M. Kirby Research Center for Functional Brain Imaging, Kennedy Krieger Institute, Baltimore, MD, USA
| | - Jeff W. M. Bulte
- The Russell H. Morgan Department of Radiology and Radiological Science, Division of MR Research, The Johns Hopkins University School of Medicine, Baltimore, MD, USA
- F. M. Kirby Research Center for Functional Brain Imaging, Kennedy Krieger Institute, Baltimore, MD, USA
- Cellular Imaging Section and Vascular Biology Program, Institute for Cell Engineering, The Johns Hopkins University School of Medicine, Baltimore, MD, USA
- Department of Biomedical Engineering, The Johns Hopkins University School of Medicine, Baltimore, MD, USA
- Department of Oncology, The Johns Hopkins University School of Medicine, Baltimore, MD, USA
- Department of Chemical & Biomolecular Engineering, The Johns Hopkins University Whiting School of Engineering, Baltimore, MD, USA
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186
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Mignani S, Rodrigues J, Tomas H, Caminade AM, Laurent R, Shi X, Majoral JP. Recent therapeutic applications of the theranostic principle with dendrimers in oncology. SCIENCE CHINA-MATERIALS 2018. [DOI: 10.1007/s40843-018-9244-5] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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187
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Zhang W, Liu L, Chen H, Hu K, Delahunty I, Gao S, Xie J. Surface impact on nanoparticle-based magnetic resonance imaging contrast agents. Theranostics 2018; 8:2521-2548. [PMID: 29721097 PMCID: PMC5928907 DOI: 10.7150/thno.23789] [Citation(s) in RCA: 104] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2017] [Accepted: 02/09/2018] [Indexed: 12/23/2022] Open
Abstract
Magnetic resonance imaging (MRI) is one of the most widely used diagnostic tools in the clinic. To improve imaging quality, MRI contrast agents, which can modulate local T1 and T2 relaxation times, are often injected prior to or during MRI scans. However, clinically used contrast agents, including Gd3+-based chelates and iron oxide nanoparticles (IONPs), afford mediocre contrast abilities. To address this issue, there has been extensive research on developing alternative MRI contrast agents with superior r1 and r2 relaxivities. These efforts are facilitated by the fast progress in nanotechnology, which allows for preparation of magnetic nanoparticles (NPs) with varied size, shape, crystallinity, and composition. Studies suggest that surface coatings can also largely affect T1 and T2 relaxations and can be tailored in favor of a high r1 or r2. However, the surface impact of NPs has been less emphasized. Herein, we review recent progress on developing NP-based T1 and T2 contrast agents, with a focus on the surface impact.
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Affiliation(s)
- Weizhong Zhang
- Department of Chemistry, University of Georgia, Athens, Georgia 30602, USA
| | - Lin Liu
- Department of Nuclear Medicine, China-Japan Union Hospital of Jilin University, 126 Xiantai Street, ErDao District, Changchun 13033, China
| | - Hongmin Chen
- Department of Chemistry, University of Georgia, Athens, Georgia 30602, USA
- Center for Molecular Imaging and Translational Medicine, State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, School of Public Health, Xiamen University, Xiamen 361102, China
| | - Kai Hu
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, Hubei 430072, China
| | - Ian Delahunty
- Department of Chemistry, University of Georgia, Athens, Georgia 30602, USA
| | - Shi Gao
- Department of Nuclear Medicine, China-Japan Union Hospital of Jilin University, 126 Xiantai Street, ErDao District, Changchun 13033, China
| | - Jin Xie
- Department of Chemistry, University of Georgia, Athens, Georgia 30602, USA
- Bio-Imaging Research Center, University of Georgia, Athens, Georgia 30602, USA
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188
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Ashur I, Allouche-Arnon H, Bar-Shir A. Calcium Fluoride Nanocrystals: Tracers for In Vivo 19
F Magnetic Resonance Imaging. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201800838] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Idan Ashur
- Department of Organic Chemistry; The Weizmann Institute of Science; 7610001 Rehovot Israel
| | - Hyla Allouche-Arnon
- Department of Organic Chemistry; The Weizmann Institute of Science; 7610001 Rehovot Israel
| | - Amnon Bar-Shir
- Department of Organic Chemistry; The Weizmann Institute of Science; 7610001 Rehovot Israel
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189
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Ashur I, Allouche-Arnon H, Bar-Shir A. Calcium Fluoride Nanocrystals: Tracers for In Vivo 19
F Magnetic Resonance Imaging. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/anie.201800838] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Idan Ashur
- Department of Organic Chemistry; The Weizmann Institute of Science; 7610001 Rehovot Israel
| | - Hyla Allouche-Arnon
- Department of Organic Chemistry; The Weizmann Institute of Science; 7610001 Rehovot Israel
| | - Amnon Bar-Shir
- Department of Organic Chemistry; The Weizmann Institute of Science; 7610001 Rehovot Israel
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190
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Michelena O, Padro D, Carrillo-Carrión C, Del Pino P, Blanco J, Arnaiz B, Parak WJ, Carril M. Novel fluorinated ligands for gold nanoparticle labelling with applications in 19F-MRI. Chem Commun (Camb) 2018; 53:2447-2450. [PMID: 28176984 DOI: 10.1039/c6cc08900c] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Novel fluorinated ligands for gold nanoparticle labelling have been designed and synthesised. Several types of gold nanoparticles have been prepared in the presence of these fluorinated ligands alone, or in combination with non-fluorinated ligands. Their colloidal stability in water and other solvents was tested and the magnetic resonance properties of the so-obtained nanoparticles were also assessed in detail. 1H and 19F-NMR spectra were evaluated and MRI phantoms of the most promising nanoparticles were successfully measured in 19F-MRI. The MRI signal to noise ratio was related to the fluorine concentration and compared with ICP-MS data to correlate the real concentration of fluorine grafted onto the nanoparticles with the actually active fluorine in MRI.
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Affiliation(s)
- Olatz Michelena
- CIC biomaGUNE, Paseo Miramon 182, 20014 Donostia - San Sebastian, Spain.
| | - Daniel Padro
- CIC biomaGUNE, Paseo Miramon 182, 20014 Donostia - San Sebastian, Spain.
| | | | - Pablo Del Pino
- Centro Singular de Investigación en Química Biológica y Materiales Moleculares (CiQUS) y Departamento de Física de Partículas, Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain
| | - Jorge Blanco
- CIC biomaGUNE, Paseo Miramon 182, 20014 Donostia - San Sebastian, Spain.
| | - Blanca Arnaiz
- CIC biomaGUNE, Paseo Miramon 182, 20014 Donostia - San Sebastian, Spain.
| | - Wolfgang J Parak
- CIC biomaGUNE, Paseo Miramon 182, 20014 Donostia - San Sebastian, Spain. and Department of Physics, Philipps University of Marburg, Renthof 7, 35037 Marburg, Germany
| | - Mónica Carril
- CIC biomaGUNE, Paseo Miramon 182, 20014 Donostia - San Sebastian, Spain. and Ikerbasque, Basque Foundation for Science, 48011 Bilbao, Spain
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191
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Lakshmipriya A, Chaudhary M, Mogurampelly S, Klein ML, Suryaprakash N. Intramolecular Hydrogen Bonding Appetency for Conformational Penchants in Oxalohydrazide Fluoro Derivatives: NMR, MD, QTAIM, and NCI Studies. J Phys Chem A 2018; 122:2703-2713. [PMID: 29488767 DOI: 10.1021/acs.jpca.8b00913] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The conformational stability of synthesized diphenyloxalohydrazide and dibenzoyloxalohydrazide fluoro derivatives has been investigated by extensive NMR studies that are ascertained by various levels of theoretical calculations. Two-dimensional 1H-19F HOESY NMR experiments revealed the close spatial proximity between two NMR-active nuclei, confirming the hydrogen bond (HB)-mediated interaction between them, further aiding in establishing the probable stable conformations of these molecules. The relaxed potential energy scan disclosed the energy-minimized most stable structure among the several possible multiple conformations, which is in concurrence with NMR interpretations. Atomistic molecular dynamics simulations have been employed to unequivocally establish the conformational stability and the nature of HB formation at varied temperatures. With the possibility of occurrence of a number of probable conformations, the percentage of occurrences of different types of HBs in them was determined by MD simulations. Their population analysis was carried out using a Boltzmann distribution, in addition to deriving their Gibbs free energies. The molecular interactions governing the stable conformations have not only been ascertained by experimental NMR interpretations but also corroborated by other theoretical computations, viz., quantum theory of atoms in molecules (QTAIM) and noncovalent interaction (NCI).
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Affiliation(s)
- A Lakshmipriya
- NMR Research Centre , Indian Institute of Science , Bangalore , Karnataka 560012 , India.,Solid State and Structural Chemistry Unit , Indian Institute of Science , Bangalore , Karnataka 560012 , India
| | - Madhusudan Chaudhary
- NMR Research Centre , Indian Institute of Science , Bangalore , Karnataka 560012 , India
| | - Santosh Mogurampelly
- Institute for Computational Molecular Science , Temple University , Philadelphia , Pennsylvania 19122 , United States
| | - Michael L Klein
- Institute for Computational Molecular Science , Temple University , Philadelphia , Pennsylvania 19122 , United States
| | - N Suryaprakash
- NMR Research Centre , Indian Institute of Science , Bangalore , Karnataka 560012 , India.,Solid State and Structural Chemistry Unit , Indian Institute of Science , Bangalore , Karnataka 560012 , India
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192
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Abstract
Fluorine-19 (19F) Magnetic Resonance Imaging (MRI) is an emerging modality for molecular imaging and cell tracking. The hydrophobicity of current exogenous probes, perfluorocarbons (PFCs) and perfluoropolyethers (PFPEs), limits the formulation options available for in vivo applications. Hydrophilic probes permit more formulation flexibility. Further, the broad Nuclear Magnetic Resonance (NMR) chemical shift range of organofluorine species enables multiple probes with unique 19F MR signatures for simultaneous interrogation of distinct molecular targets in vivo. We report herein a flexible approach to stable liposomal formulations of hydrophilic fluorinated molecules (each bearing numerous magnetically equivalent 19F atoms), with 19F encapsulation of up to 22.7 mg/mL and a per particle load of 3.6 × 106 19F atoms. Using a combination of such probes, we demonstrate, with no chemical shift artifacts, the simultaneous imaging of multiple targets within a given target volume by spectral 19F MRI.
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193
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Peng Q, Yuan Y, Zhang H, Bo S, Li Y, Chen S, Yang Z, Zhou X, Jiang ZX. 19F CEST imaging probes for metal ion detection. Org Biomol Chem 2018; 15:6441-6446. [PMID: 28741638 DOI: 10.1039/c7ob01068k] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
For detecting metal ions with 19F chemical exchange saturation transfer magnetic resonance imaging (19F CEST MRI), a class of novel fluorinated chelators with diverse fluorine contents and chelation properties were conveniently synthesized on gram scales. Among them, a DTPA-derived chelator with high sensitivity and selectivity was identified as a novel 19F CEST imaging probe for simultaneously detecting multiple metal ions.
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Affiliation(s)
- Qiaoli Peng
- Hubei Province Engineering and Technology Research Center for Fluorinated Pharmaceuticals and School of Pharmaceutical Sciences, Wuhan University, Wuhan 430071, China.
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194
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Application of Heteronuclear NMR Spectroscopy to Bioinorganic and Medicinal Chemistry ☆. REFERENCE MODULE IN CHEMISTRY, MOLECULAR SCIENCES AND CHEMICAL ENGINEERING 2018. [PMCID: PMC7157447 DOI: 10.1016/b978-0-12-409547-2.10947-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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195
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Li S, Yuan Y, Yang Y, Li C, McMahon MT, Liu M, Chen S, Zhou X. Potential detection of cancer with fluorinated silicon nanoparticles in 19F MR and fluorescence imaging. J Mater Chem B 2018; 6:4293-4300. [DOI: 10.1039/c8tb00648b] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Novel fluorinated silicon nanoparticles with strong fluorescence, high 19F-MRI sensitivity and excellent aqueous solubility have been successfully developed.
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Affiliation(s)
- Sha Li
- Key Laboratory of Magnetic Resonance in Biological Systems
- State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics
- National Center for Magnetic Resonance in Wuhan
- Wuhan Institute of Physics and Mathematics
- Chinese Academy of Sciences
| | - Yaping Yuan
- Key Laboratory of Magnetic Resonance in Biological Systems
- State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics
- National Center for Magnetic Resonance in Wuhan
- Wuhan Institute of Physics and Mathematics
- Chinese Academy of Sciences
| | - Yuqi Yang
- Key Laboratory of Magnetic Resonance in Biological Systems
- State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics
- National Center for Magnetic Resonance in Wuhan
- Wuhan Institute of Physics and Mathematics
- Chinese Academy of Sciences
| | - Conggang Li
- Key Laboratory of Magnetic Resonance in Biological Systems
- State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics
- National Center for Magnetic Resonance in Wuhan
- Wuhan Institute of Physics and Mathematics
- Chinese Academy of Sciences
| | - Michael T. McMahon
- Russell H. Morgan Department of Radiology and Radiological Science
- The Johns Hopkins University School of Medicine
- Baltimore
- USA
- F.M. Kirby Research Center for Functional Brain Imaging
| | - Maili Liu
- Key Laboratory of Magnetic Resonance in Biological Systems
- State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics
- National Center for Magnetic Resonance in Wuhan
- Wuhan Institute of Physics and Mathematics
- Chinese Academy of Sciences
| | - Shizhen Chen
- Key Laboratory of Magnetic Resonance in Biological Systems
- State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics
- National Center for Magnetic Resonance in Wuhan
- Wuhan Institute of Physics and Mathematics
- Chinese Academy of Sciences
| | - Xin Zhou
- Key Laboratory of Magnetic Resonance in Biological Systems
- State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics
- National Center for Magnetic Resonance in Wuhan
- Wuhan Institute of Physics and Mathematics
- Chinese Academy of Sciences
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196
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Preslar AT, Lilley LM, Sato K, Zhang S, Chia ZK, Stupp SI, Meade TJ. Calcium-Induced Morphological Transitions in Peptide Amphiphiles Detected by 19F-Magnetic Resonance Imaging. ACS APPLIED MATERIALS & INTERFACES 2017; 9:39890-39894. [PMID: 28915004 PMCID: PMC5735829 DOI: 10.1021/acsami.7b07828] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
Misregulation of extracellular Ca2+ can indicate bone-related pathologies. New, noninvasive tools are required to image Ca2+ fluxes and fluorine magnetic resonance imaging (19F-MRI) is uniquely suited to this challenge. Here, we present three, highly fluorinated peptide amphiphiles that self-assemble into nanoribbons in buffered saline and demonstrate these nanostructures can be programmed to change 19F-NMR signal intensity as a function of Ca2+ concentration. We determined these nanostructures show significant reduction in 19F-NMR signal as nanoribbon width increases in response to Ca2+, corresponding to 19F-MR image intensity reduction. Thus, these peptide amphiphiles can be used to quantitatively image biologically relevant Ca2+ concentrations.
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Affiliation(s)
- Adam T. Preslar
- Departments of Chemistry, Molecular Biosciences, Neurobiology and Radiology, Northwestern University, Evanston, Illinois 60208, United States
- Simpson Querrey Institute for BioNanotechnology in Medicine and Department of Medicine, Feinberg School of Medicine, Northwestern University, Chicago, Illinois 60611, United States
| | - Laura M. Lilley
- Departments of Chemistry, Molecular Biosciences, Neurobiology and Radiology, Northwestern University, Evanston, Illinois 60208, United States
| | - Kohei Sato
- Simpson Querrey Institute for BioNanotechnology in Medicine and Department of Medicine, Feinberg School of Medicine, Northwestern University, Chicago, Illinois 60611, United States
| | - Shanrong Zhang
- Advanced Imaging Research Center, University of Texas Southwestern Medical Center, Dallas, Texas 75390, United States
| | - Zer Keen Chia
- Departments of Chemistry, Molecular Biosciences, Neurobiology and Radiology, Northwestern University, Evanston, Illinois 60208, United States
| | - Samuel I. Stupp
- Departments of Chemistry, Materials Science and Engineering, and Biomedical Engineering, Northwestern University, Evanston, Illinois 60208, United States
- Simpson Querrey Institute for BioNanotechnology in Medicine and Department of Medicine, Feinberg School of Medicine, Northwestern University, Chicago, Illinois 60611, United States
- Corresponding Authors: . Phone: 1-(847) 491-2481 (T.J.M). . Phone: 1-(847) 491-3002 (S.I.S.)
| | - Thomas J. Meade
- Departments of Chemistry, Molecular Biosciences, Neurobiology and Radiology, Northwestern University, Evanston, Illinois 60208, United States
- Corresponding Authors: . Phone: 1-(847) 491-2481 (T.J.M). . Phone: 1-(847) 491-3002 (S.I.S.)
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197
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Preliminary 19F-MRS Study of Tumor Cell Proliferation with 3'-deoxy-3'-fluorothymidine and Its Metabolite (FLT-MP). CONTRAST MEDIA & MOLECULAR IMAGING 2017; 2017:3981358. [PMID: 29097919 PMCID: PMC5634584 DOI: 10.1155/2017/3981358] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/11/2017] [Accepted: 07/17/2017] [Indexed: 12/14/2022]
Abstract
The thymidine analogue 3'-deoxy-3'-[18F]fluorothymidine, or [18F]fluorothymidine ([18F]FLT), is used to measure tumor cell proliferation with positron emission tomography (PET) imaging technology in nuclear medicine. FLT is phosphorylated by thymidine kinase 1 (TK1) and then trapped inside cells; it is not incorporated into DNA. Imaging with 18F-radiolabeled FLT is a noninvasive technique to visualize cellular proliferation in tumors. However, it is difficult to distinguish between [18F]FLT and its metabolites by PET imaging, and quantification has not been attempted using current imaging methods. In this study, we successfully acquired in vivo19F spectra of natural or nonradioactive 3'-deoxy-3'-fluorothymidine ([19F]FLT) and its monophosphate metabolite (FLT-MP) in a tumor xenograft mouse model using 9.4T magnetic resonance imaging (MRI). This preliminary result demonstrates that 19F magnetic resonance spectroscopy (MRS) with FLT is suitable for the in vivo assessment of tumor aggressiveness and for early prediction of treatment response.
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198
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Geminal difluorination of α,α’- disubstituted styrenes using fluoro-benziodoxole reagent. Migration aptitude of the α-substituents. J Fluor Chem 2017. [DOI: 10.1016/j.jfluchem.2017.07.006] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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199
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Blahut J, Bernášek K, Gálisová A, Herynek V, Císařová I, Kotek J, Lang J, Matějková S, Hermann P. Paramagnetic 19F Relaxation Enhancement in Nickel(II) Complexes of N-Trifluoroethyl Cyclam Derivatives and Cell Labeling for 19F MRI. Inorg Chem 2017; 56:13337-13348. [DOI: 10.1021/acs.inorgchem.7b02119] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Jan Blahut
- Department of Inorganic
Chemistry, Faculty of Science, Charles University (Univerzita Karlova), Hlavova 2030, 128 43 Prague 2, Czech Republic
| | - Karel Bernášek
- Department of Low
Temperature Physics, Faculty of Mathematics and Physics, Charles University (Univerzita Karlova), V Holešovičkách
2, 180 00 Prague 8, Czech Republic
| | - Andrea Gálisová
- Department of Radiodiagnostic
and Interventional Radiology, Magnetic Resonance Unit, Institute for Clinical and Experimental Medicine, Vídeňská 1958/9, 140 21 Prague 4, Czech Republic
| | - Vít Herynek
- Department of Radiodiagnostic
and Interventional Radiology, Magnetic Resonance Unit, Institute for Clinical and Experimental Medicine, Vídeňská 1958/9, 140 21 Prague 4, Czech Republic
| | - Ivana Císařová
- Department of Inorganic
Chemistry, Faculty of Science, Charles University (Univerzita Karlova), Hlavova 2030, 128 43 Prague 2, Czech Republic
| | - Jan Kotek
- Department of Inorganic
Chemistry, Faculty of Science, Charles University (Univerzita Karlova), Hlavova 2030, 128 43 Prague 2, Czech Republic
| | - Jan Lang
- Department of Low
Temperature Physics, Faculty of Mathematics and Physics, Charles University (Univerzita Karlova), V Holešovičkách
2, 180 00 Prague 8, Czech Republic
| | - Stanislava Matějková
- Institute of Organic Chemistry and Biochemistry, Czech Academy of Sciences, Flemingovo nám. 2, 166 10 Prague, Czech Republic
| | - Petr Hermann
- Department of Inorganic
Chemistry, Faculty of Science, Charles University (Univerzita Karlova), Hlavova 2030, 128 43 Prague 2, Czech Republic
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200
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Testero SA, Granados C, Fernández D, Gallego P, Covaleda G, Reverter D, Vendrell J, Avilés FX, Pallarès I, Mobashery S. Discovery of Mechanism-Based Inactivators for Human Pancreatic Carboxypeptidase A from a Focused Synthetic Library. ACS Med Chem Lett 2017; 8:1122-1127. [PMID: 29057062 DOI: 10.1021/acsmedchemlett.7b00346] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2017] [Accepted: 09/22/2017] [Indexed: 12/22/2022] Open
Abstract
Metallocarboxypeptidases (MCPs) are involved in many biological processes such as fibrinolysis or inflammation, development, Alzheimer's disease, and various types of cancer. We describe the synthesis and kinetic characterization of a focused library of 22 thiirane- and oxirane-based potential mechanism-based inhibitors, which led to discovery of an inhibitor for the human pro-carboxypeptidase A1. Our structural analyses show that the thiirane-based small-molecule inhibitor penetrates the barrier of the pro-domain to bind within the active site. This binding leads to a chemical reaction that covalently modifies the catalytic Glu270. These results highlight the importance of combined structural, biophysical, and biochemical evaluation of inhibitors in design strategies for the development of spectroscopically nonsilent probes as effective beacons for in vitro, in cellulo, and/or in vivo localization in clinical and industrial applications.
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Affiliation(s)
- Sebastián A. Testero
- Department
of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556, United States
| | - Carla Granados
- Departament
de Bioquímica i Biologia Molecular, Facultat de Biociències,
and Institut de Biotecnologia i de Biomedicina, Universitat Autònoma de Barcelona, E-08193 Bellaterra, Spain
| | - Daniel Fernández
- Departament
de Bioquímica i Biologia Molecular, Facultat de Biociències,
and Institut de Biotecnologia i de Biomedicina, Universitat Autònoma de Barcelona, E-08193 Bellaterra, Spain
| | - Pablo Gallego
- Departament
de Bioquímica i Biologia Molecular, Facultat de Biociències,
and Institut de Biotecnologia i de Biomedicina, Universitat Autònoma de Barcelona, E-08193 Bellaterra, Spain
| | - Giovanni Covaleda
- Departament
de Bioquímica i Biologia Molecular, Facultat de Biociències,
and Institut de Biotecnologia i de Biomedicina, Universitat Autònoma de Barcelona, E-08193 Bellaterra, Spain
| | - David Reverter
- Departament
de Bioquímica i Biologia Molecular, Facultat de Biociències,
and Institut de Biotecnologia i de Biomedicina, Universitat Autònoma de Barcelona, E-08193 Bellaterra, Spain
| | - Josep Vendrell
- Departament
de Bioquímica i Biologia Molecular, Facultat de Biociències,
and Institut de Biotecnologia i de Biomedicina, Universitat Autònoma de Barcelona, E-08193 Bellaterra, Spain
| | - Francesc X. Avilés
- Departament
de Bioquímica i Biologia Molecular, Facultat de Biociències,
and Institut de Biotecnologia i de Biomedicina, Universitat Autònoma de Barcelona, E-08193 Bellaterra, Spain
| | - Irantzu Pallarès
- Departament
de Bioquímica i Biologia Molecular, Facultat de Biociències,
and Institut de Biotecnologia i de Biomedicina, Universitat Autònoma de Barcelona, E-08193 Bellaterra, Spain
| | - Shahriar Mobashery
- Department
of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556, United States
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