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Kratz H, Mohtashamdolatshahi A, Eberbeck D, Kosch O, Wiekhorst F, Taupitz M, Hamm B, Stolzenburg N, Schnorr J. Tailored Magnetic Multicore Nanoparticles for Use as Blood Pool MPI Tracers. NANOMATERIALS 2021; 11:nano11061532. [PMID: 34200588 PMCID: PMC8228684 DOI: 10.3390/nano11061532] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/19/2021] [Revised: 06/03/2021] [Accepted: 06/07/2021] [Indexed: 01/10/2023]
Abstract
For the preclinical development of magnetic particle imaging (MPI) in general, and the exploration of possible new clinical applications of MPI in particular, tailored MPI tracers with surface properties optimized for the intended use are needed. Here we present the synthesis of magnetic multicore particles (MCPs) modified with polyethylene glycol (PEG) for use as blood pool MPI tracers. To achieve the stealth effect the carboxylic groups of the parent MCP were activated and coupled with pegylated amines (mPEG-amines) with different PEG-chain lengths from 2 to 20 kDa. The resulting MCP-PEG variants with PEG-chain lengths of 10 kDa (MCP-PEG10K after one pegylation step and MCP-PEG10K2 after a second pegylation step) formed stable dispersions and showed strong evidence of a successful reaction of MCP and MCP-PEG10K with mPEG-amine with 10 kDa, while maintaining their magnetic properties. In rats, the mean blood half-lives, surprisingly, were 2 and 62 min, respectively, and therefore, for MCP-PEG10K2, dramatically extended compared to the parent MCP, presumably due to the higher PEG density on the particle surface, which may lead to a lower phagocytosis rate. Because of their significantly extended blood half-life, MCP-PEG10K2 are very promising as blood pool tracers for future in vivo cardiovascular MPI.
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Affiliation(s)
- Harald Kratz
- Department of Radiology, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, D-10117 Berlin, Germany; (A.M.); (M.T.); (B.H.); (N.S.); (J.S.)
- Correspondence: ; Tel.: +49-30-450-527180
| | - Azadeh Mohtashamdolatshahi
- Department of Radiology, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, D-10117 Berlin, Germany; (A.M.); (M.T.); (B.H.); (N.S.); (J.S.)
| | - Dietmar Eberbeck
- Physikalisch-Technische Bundesanstalt, D-10587 Berlin, Germany; (D.E.); (O.K.); (F.W.)
| | - Olaf Kosch
- Physikalisch-Technische Bundesanstalt, D-10587 Berlin, Germany; (D.E.); (O.K.); (F.W.)
| | - Frank Wiekhorst
- Physikalisch-Technische Bundesanstalt, D-10587 Berlin, Germany; (D.E.); (O.K.); (F.W.)
| | - Matthias Taupitz
- Department of Radiology, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, D-10117 Berlin, Germany; (A.M.); (M.T.); (B.H.); (N.S.); (J.S.)
| | - Bernd Hamm
- Department of Radiology, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, D-10117 Berlin, Germany; (A.M.); (M.T.); (B.H.); (N.S.); (J.S.)
| | - Nicola Stolzenburg
- Department of Radiology, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, D-10117 Berlin, Germany; (A.M.); (M.T.); (B.H.); (N.S.); (J.S.)
| | - Jörg Schnorr
- Department of Radiology, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, D-10117 Berlin, Germany; (A.M.); (M.T.); (B.H.); (N.S.); (J.S.)
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Zhao GZ, Guo Z, Chen QW. Gd doped hollow nanoscale coordination polymers as multimodal imaging agents and a potential drug delivery carriers. CHINESE J CHEM PHYS 2018. [DOI: 10.1063/1674-0068/31/cjcp1805100] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Gao-zheng Zhao
- Hefei National Laboratory for Physical Sciences at the Microscale, Department of Materials Science & Engineering, University of Science and Technology of China, Hefei 230026, China
| | - Zhen Guo
- Anhui Key Laboratory for Cellular Dynamics and Chemical Biology, School of Life Sciences, University of Science and Technology of China, Hefei 230027, China
| | - Qian-wang Chen
- Hefei National Laboratory for Physical Sciences at the Microscale, Department of Materials Science & Engineering, University of Science and Technology of China, Hefei 230026, China
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Kratz H, Taupitz M, Ariza de Schellenberger A, Kosch O, Eberbeck D, Wagner S, Trahms L, Hamm B, Schnorr J. Novel magnetic multicore nanoparticles designed for MPI and other biomedical applications: From synthesis to first in vivo studies. PLoS One 2018; 13:e0190214. [PMID: 29300729 PMCID: PMC5754082 DOI: 10.1371/journal.pone.0190214] [Citation(s) in RCA: 47] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2017] [Accepted: 12/11/2017] [Indexed: 01/20/2023] Open
Abstract
Synthesis of novel magnetic multicore particles (MCP) in the nano range, involves alkaline precipitation of iron(II) chloride in the presence of atmospheric oxygen. This step yields green rust, which is oxidized to obtain magnetic nanoparticles, which probably consist of a magnetite/maghemite mixed-phase. Final growth and annealing at 90°C in the presence of a large excess of carboxymethyl dextran gives MCP very promising magnetic properties for magnetic particle imaging (MPI), an emerging medical imaging modality, and magnetic resonance imaging (MRI). The magnetic nanoparticles are biocompatible and thus potential candidates for future biomedical applications such as cardiovascular imaging, sentinel lymph node mapping in cancer patients, and stem cell tracking. The new MCP that we introduce here have three times higher magnetic particle spectroscopy performance at lower and middle harmonics and five times higher MPS signal strength at higher harmonics compared with Resovist®. In addition, the new MCP have also an improved in vivo MPI performance compared to Resovist®, and we here report the first in vivo MPI investigation of this new generation of magnetic nanoparticles.
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Affiliation(s)
- Harald Kratz
- Charité –Universitätsmedizin Berlin, Institute of Radiology, Berlin, Germany
| | - Matthias Taupitz
- Charité –Universitätsmedizin Berlin, Institute of Radiology, Berlin, Germany
| | | | - Olaf Kosch
- Physikalisch-Technische Bundesanstalt, Berlin, Germany
| | | | - Susanne Wagner
- Charité –Universitätsmedizin Berlin, Institute of Radiology, Berlin, Germany
| | - Lutz Trahms
- Physikalisch-Technische Bundesanstalt, Berlin, Germany
| | - Bernd Hamm
- Charité –Universitätsmedizin Berlin, Institute of Radiology, Berlin, Germany
| | - Jörg Schnorr
- Charité –Universitätsmedizin Berlin, Institute of Radiology, Berlin, Germany
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Kobayashi Y, Hauptmann R, Kratz H, Ebert M, Wagner S, Taupitz M. Europium doping of superparamagnetic iron oxide nanoparticles enables their detection by fluorescence microscopy and for quantitative analytics. Technol Health Care 2017; 25:457-470. [DOI: 10.3233/thc-161285] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Affiliation(s)
- Yuske Kobayashi
- Department of Interventional and Diagnostic Radiology and Nuclear Medicine, Universitätsklinikum Hamburg-Eppendorf, 20246 Hamburg, Germany
| | - Ralf Hauptmann
- Department of Radiology, Division of Experimental Radiology, Charité - Universitätsmedizin Berlin, 10117 Berlin, Germany
| | - Harald Kratz
- Department of Radiology, Division of Experimental Radiology, Charité - Universitätsmedizin Berlin, 10117 Berlin, Germany
| | - Monika Ebert
- Department of Radiology, Division of Experimental Radiology, Charité - Universitätsmedizin Berlin, 10117 Berlin, Germany
| | | | - Matthias Taupitz
- Department of Radiology, Division of Experimental Radiology, Charité - Universitätsmedizin Berlin, 10117 Berlin, Germany
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Luo Y, Zhao L, Li X, Yang J, Guo L, Zhang G, Shen M, Zhao J, Shi X. The design of a multifunctional dendrimer-based nanoplatform for targeted dual mode SPECT/MR imaging of tumors. J Mater Chem B 2016; 4:7220-7225. [DOI: 10.1039/c6tb02190e] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
A multifunctional dendrimer-based nanoplatform labeled with 99mTc can be synthesized for targeted SPECT/MR dual mode imaging of tumors.
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Affiliation(s)
- Yu Luo
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Chemistry
- Chemical Engineering and Biotechnology
- Donghua University
- Shanghai 201620
- P. R. China
| | - Lingzhou Zhao
- Department of Nuclear Medicine
- Shanghai General Hospital
- School of Medicine
- Shanghai Jiaotong University
- Shanghai 200080
| | - Xin Li
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Chemistry
- Chemical Engineering and Biotechnology
- Donghua University
- Shanghai 201620
- P. R. China
| | - Jia Yang
- Department of Radiology
- Shanghai General Hospital, School of Medicine
- Shanghai Jiaotong University
- Shanghai 200080
- P. R. China
| | - Lilei Guo
- Department of Nuclear Medicine
- Shanghai General Hospital
- School of Medicine
- Shanghai Jiaotong University
- Shanghai 200080
| | - Guixiang Zhang
- Department of Radiology
- Shanghai General Hospital, School of Medicine
- Shanghai Jiaotong University
- Shanghai 200080
- P. R. China
| | - Mingwu Shen
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Chemistry
- Chemical Engineering and Biotechnology
- Donghua University
- Shanghai 201620
- P. R. China
| | - Jinhua Zhao
- Department of Nuclear Medicine
- Shanghai General Hospital
- School of Medicine
- Shanghai Jiaotong University
- Shanghai 200080
| | - Xiangyang Shi
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Chemistry
- Chemical Engineering and Biotechnology
- Donghua University
- Shanghai 201620
- P. R. China
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Gutiérrez L, Costo R, Grüttner C, Westphal F, Gehrke N, Heinke D, Fornara A, Pankhurst QA, Johansson C, Veintemillas-Verdaguer S, Morales MP. Synthesis methods to prepare single- and multi-core iron oxide nanoparticles for biomedical applications. Dalton Trans 2015; 44:2943-52. [DOI: 10.1039/c4dt03013c] [Citation(s) in RCA: 82] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
We review and classify synthetic routes to either single-core or multi-core iron oxide nanoparticles for biomedical applications.
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Affiliation(s)
- L. Gutiérrez
- Instituto de Ciencia de Materiales de Madrid
- ICMM-CSIC
- Cantoblanco
- Spain
| | - R. Costo
- Instituto de Ciencia de Materiales de Madrid
- ICMM-CSIC
- Cantoblanco
- Spain
| | - C. Grüttner
- Micromod Partikeltechnologie GmbH
- D-18119 Rostock
- Germany
| | - F. Westphal
- Micromod Partikeltechnologie GmbH
- D-18119 Rostock
- Germany
| | - N. Gehrke
- NanoPET Pharma GmbH
- D-10115 Berlin
- Germany
| | - D. Heinke
- NanoPET Pharma GmbH
- D-10115 Berlin
- Germany
| | - A. Fornara
- SP Technical Research Institute of Sweden
- SE-114 86 Stockholm
- Sweden
| | - Q. A. Pankhurst
- Institute of Biomedical Engineering
- University College of London
- London WC1E 6BT
- UK
| | - C. Johansson
- Acreo Swedish ICT AB
- Arvid Hedvalls Backe 4
- SE-400 14 Göteborg
- Sweden
| | | | - M. P. Morales
- Instituto de Ciencia de Materiales de Madrid
- ICMM-CSIC
- Cantoblanco
- Spain
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Raabe N, Forberich E, Freund B, Bruns OT, Heine M, Kaul MG, Tromsdorf U, Herich L, Nielsen P, Reimer R, Hohenberg H, Weller H, Schumacher U, Adam G, Ittrich H. Determination of liver-specific r2 * of a highly monodisperse USPIO by (59) Fe iron core-labeling in mice at 3 T MRI. CONTRAST MEDIA & MOLECULAR IMAGING 2014; 10:153-62. [PMID: 25078884 DOI: 10.1002/cmmi.1612] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/03/2013] [Revised: 04/30/2014] [Accepted: 05/25/2014] [Indexed: 01/26/2023]
Abstract
Accurate determination of tissue concentration of ultrasmall superparamagnetic iron oxide nanoparticles (USPIO) using T2 * MR relaxometry is still challenging. We present a reliable quantification method for local USPIO amount with the estimation of the liver specific relaxivity r2 * using monodisperse (59) Fe-core-labeled USPIO ((59) FeUSPIO). Dynamic and relaxometric in vivo characteristics of unlabeled monodisperse USPIO were determined in MRI at 3 T. The in vivo MR studies were performed for liver tissue with (59) FeUSPIO using iron dosages of 9 (n = 3), 18 (n = 2) and 27 (n = 3) µmol Fe kg(-1) body weight. The R2 * of the liver before and after USPIO injection (∆R2 *) was measured and correlated with (59) Fe activity measurements of excised organs by a whole body radioactivity counter (HAMCO) to define the dependency of ∆R2 * and (59) FeUSPIO liver concentration and calculate the r2 * of (59) FeUSPIO for the liver. Ultrastructural analysis of liver uptake was performed by histology and transmission electron microscopy. ∆R2 * of the liver revealed a dosage-dependent accumulation of (59) FeUSPIO with a percentage uptake of 70-88% of the injection dose. Hepatic ∆R2 * showed a dose-dependent linear correlation to (59) FeUSPIO activity measurements (r = 0.92) and an r2 * in the liver of 481 ± 74.9 mm(-1) s(-1) in comparison to an in vitro r2 * of 60.5 ± 3.3 mm(-1) s(-1) . Our results indicate that core-labeled (59) FeUSPIO can be used to quantify the local amount of USPIO and to estimate the liver-specific relaxivity r2 *.
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Affiliation(s)
- Nina Raabe
- Department of Diagnostic and Interventional Radiology, University Medical Centre Hamburg-Eppendorf, Hamburg, Germany
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Hunger M, Budinger E, Zhong K, Angenstein F. Visualization of acute focal lesions in rats with experimental autoimmune encephalomyelitis by magnetic nanoparticles, comparing different MRI sequences including phase imaging. J Magn Reson Imaging 2013; 39:1126-35. [DOI: 10.1002/jmri.24280] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2013] [Accepted: 05/17/2013] [Indexed: 11/05/2022] Open
Affiliation(s)
- Marcel Hunger
- Special Laboratory Non-Invasive Brain Imaging; Leibniz Institute for Neurobiology; Magdeburg Germany
| | - Eike Budinger
- Department of Auditory Learning and Speech; Leibniz Institute for Neurobiology; Magdeburg Germany
| | - Kai Zhong
- Department of Biomedical Magnetic Resonance; University of Magdeburg; Magdeburg Germany
| | - Frank Angenstein
- Special Laboratory Non-Invasive Brain Imaging; Leibniz Institute for Neurobiology; Magdeburg Germany
- Functional Neuroimaging Group; German Center for Neurodegenerative Diseases within the Helmholtz Association; Magdeburg Germany
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Ichihashi S, Marugami N, Tanaka T, Iwakoshi S, Kurumatani N, Kitano S, Nogi A, Kichikawa K. Preliminary experience with superparamagnetic iron oxide-enhanced dynamic magnetic resonance imaging and comparison with contrast-enhanced computed tomography in endoleak detection after endovascular aneurysm repair. J Vasc Surg 2013; 58:66-72. [DOI: 10.1016/j.jvs.2012.12.061] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2012] [Revised: 12/14/2012] [Accepted: 12/19/2012] [Indexed: 10/27/2022]
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Huang Y, Hu L, Zhang T, Zhong H, Zhou J, Liu Z, Wang H, Guo Z, Chen Q. Mn₃[Co(CN)₆]₂@SiO₂ core-shell nanocubes: novel bimodal contrast agents for MRI and optical imaging. Sci Rep 2013; 3:2647. [PMID: 24026007 PMCID: PMC3770959 DOI: 10.1038/srep02647] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2013] [Accepted: 08/28/2013] [Indexed: 12/22/2022] Open
Abstract
Nanoprobes with dual modal imaging of magnetic resonance imaging (MRI) and two-photon fluorescence (TPF) can serve as promising platforms for clinical diagnosis. A wide range of molecules and nanoparticles have been investigated as agents for contrast enhanced MRI and fluorescence imaging in cancer diagnosis. However, a single material with dual modal imaging of MRI and TPF is rarely reported. We found that Mn₃[Co(CN)₆]₂@SiO₂ nanocubes can serve as agents for both T₁- and T₂-weighted MRI, and TPF imaging. The nanocubes coated with silica to form Mn₃[Co(CN)₆]₂@SiO₂ core-shell nanocubes were readily internalized by cells without showing cytotoxicity. In vitro tests, the core-shell nanocubes display relatively high longitudinal (r₁) and transverse (r₂) relaxivities, they also manifest a remarkable T₁ and T₂ contrast effects at in-vivo imaging of internal organs in Mice. Moreover, the core-shell nanocubes could offer high-resolution cell fluorescence imaging by two-photon excitation (720 nm) or by conventional fluorescence with 403- or 488-nm excitation.
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Affiliation(s)
- Yimin Huang
- Hefei National Laboratory for Physical Sciences at Microscale and Department of Materials Science & Engineering, University of Science and Technology of China, Hefei 230026, China
| | - Lin Hu
- High Magnetic Field Laboratory, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, China
| | - Tingting Zhang
- Radiology Department of the First Affiliated Hospital of Anhui Medical University, Hefei 230022, China
| | - Hao Zhong
- Hefei National Laboratory for Physical Sciences at Microscale and Department of Materials Science & Engineering, University of Science and Technology of China, Hefei 230026, China
| | - Jiajia Zhou
- Anhui Key Laboratory for Cellular Dynamics and Chemical Biology, School of Life Sciences, University of Science and Technology of China, Hefei 230027, China
| | - Zhenbang Liu
- Anhui Key Laboratory for Cellular Dynamics and Chemical Biology, School of Life Sciences, University of Science and Technology of China, Hefei 230027, China
| | - Haibao Wang
- Radiology Department of the First Affiliated Hospital of Anhui Medical University, Hefei 230022, China
| | - Zhen Guo
- Anhui Key Laboratory for Cellular Dynamics and Chemical Biology, School of Life Sciences, University of Science and Technology of China, Hefei 230027, China
| | - Qianwang Chen
- Hefei National Laboratory for Physical Sciences at Microscale and Department of Materials Science & Engineering, University of Science and Technology of China, Hefei 230026, China
- High Magnetic Field Laboratory, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, China
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Deloison B, Siauve N, Aimot S, Balvay D, Thiam R, Cuenod CA, Ville Y, Clement O, Salomon LJ. SPIO-enhanced magnetic resonance imaging study of placental perfusion in a rat model of intrauterine growth restriction. BJOG 2012; 119:626-33. [DOI: 10.1111/j.1471-0528.2011.03251.x] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Abstract
Due to their high magnetization, superparamagnetic iron oxide nanoparticles induce an important decrease in the transverse relaxation of water protons and are, therefore, very efficient negative MRI contrast agents. The knowledge and control of the chemical and physical characteristics of nanoparticles are of great importance. The choice of the synthesis method (microemulsions, sol-gel synthesis, laser pyrolysis, sonochemical synthesis or coprecipitation) determines the magnetic nanoparticle's size and shape, as well as its size distribution and surface chemistry. Nanoparticles can be used for numerous in vivo applications, such as MRI contrast enhancement and hyperthermia drug delivery. New developments focus on targeting through molecular imaging and cell tracking.
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Kim SJ, Moon WK, Choi SH, Chang JM, Cho N. Magnetic resonance enhancement pattern and diagnostic accuracy of gadofluorine M in a rabbit VX2 tumor model: Comparison with gadopentetate dimeglumine. Eur J Radiol 2011; 81:1751-7. [PMID: 21477960 DOI: 10.1016/j.ejrad.2011.03.044] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2010] [Revised: 03/04/2011] [Accepted: 03/11/2011] [Indexed: 10/18/2022]
Abstract
OBJECTIVE The purpose of this study was to evaluate the enhancement pattern and the diagnostic accuracy of gadofluorine M in comparison with gadopentetate dimeglumine in a rabbit VX2 tumor model. MATERIALS AND METHODS Thirteen rabbits with experimentally induced VX2 carcinomas in the thighs underwent sequential T1-weighted enhancement MR imaging using a 3.0T MR imager, first with gadopentetate dimeglumine, and then 24 (n=4) or 4h (n=9) later with gadofluorine M. In 4 rabbits with 13 tumors, the time-percentage enhancement (PE; i.e., percentage of signal intensity increase) curve was obtained for up to 24h for each contrast agent. In 9 rabbits with 49 tumors (random numbers of VX2 tumors were inoculated at random sites in the thigh), 3 readers unaware of the histopathologic results interpreted the MR images and determined the number and conspicuity level of the detected tumors. The reference standard was the histopathology of the specimen. RESULTS The time-to-peak PE for gadopentetate dimeglumine was 1min and gadopentetate dimeglumine showed a rapid washout pattern. The time-to-peak PE for gadofluorine M was 30min and gadofluorine M showed a plateau enhancement pattern for up to 24h. The peak PE of gadofluorine M was approximately twice that of the same dose of gadopentetate dimeglumine (108.2±14.8 vs. 51.5±24.0). The sensitivities for detecting VX2 tumors by 3 readers were 89.8% (44/49), 85.7% (42/49), and 95.9% (47/49) for gadopentetate dimeglumine-enhanced MR imaging, and 87.8% (43/49), 89.8% (44/49), and 89.8% (44/49) for gadofluorine M-enhanced MR imaging. No significant differences in the sensitivities existed between the two contrast agents for any reader. However, the conspicuity level of tumors was superior with gadofluorine M-enhanced MR imaging for two readers and similar for the other reader. CONCLUSION Gadofluorine M showed strong and plateau enhancement of tumors for up to 24h. In the reader study, gadofluorine M showed better conspicuity for VX2 tumors than gadopentetate dimeglumine, but had a similar sensitivity.
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Affiliation(s)
- Seung Ja Kim
- Department of Radiology, Seoul Metropolitan Government Seoul National University, Boramae Medical Center, Seoul, Republic of Korea
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Proschek D, Tonak M, Kafchitsas K, Zangos S, Mack M, Theisen A, Kurth A. Direct Implantation of VX-2 Carcinoma: A New Rabbit Bone Model Using a Three-Dimensional Matrix as a Carrier for the Tumor Cells. Eur Surg Res 2011; 47:154-8. [DOI: 10.1159/000330451] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2011] [Accepted: 06/15/2011] [Indexed: 11/19/2022]
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Sakamoto JH, van de Ven AL, Godin B, Blanco E, Serda RE, Grattoni A, Ziemys A, Bouamrani A, Hu T, Ranganathan SI, De Rosa E, Martinez JO, Smid CA, Buchanan RM, Lee SY, Srinivasan S, Landry M, Meyn A, Tasciotti E, Liu X, Decuzzi P, Ferrari M. Enabling individualized therapy through nanotechnology. Pharmacol Res 2010; 62:57-89. [PMID: 20045055 DOI: 10.1016/j.phrs.2009.12.011] [Citation(s) in RCA: 152] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/06/2009] [Accepted: 12/21/2009] [Indexed: 12/13/2022]
Abstract
Individualized medicine is the healthcare strategy that rebukes the idiomatic dogma of 'losing sight of the forest for the trees'. We are entering a new era of healthcare where it is no longer acceptable to develop and market a drug that is effective for only 80% of the patient population. The emergence of "-omic" technologies (e.g. genomics, transcriptomics, proteomics, metabolomics) and advances in systems biology are magnifying the deficiencies of standardized therapy, which often provide little treatment latitude for accommodating patient physiologic idiosyncrasies. A personalized approach to medicine is not a novel concept. Ever since the scientific community began unraveling the mysteries of the genome, the promise of discarding generic treatment regimens in favor of patient-specific therapies became more feasible and realistic. One of the major scientific impediments of this movement towards personalized medicine has been the need for technological enablement. Nanotechnology is projected to play a critical role in patient-specific therapy; however, this transition will depend heavily upon the evolutionary development of a systems biology approach to clinical medicine based upon "-omic" technology analysis and integration. This manuscript provides a forward looking assessment of the promise of nanomedicine as it pertains to individualized medicine and establishes a technology "snapshot" of the current state of nano-based products over a vast array of clinical indications and range of patient specificity. Other issues such as market driven hurdles and regulatory compliance reform are anticipated to "self-correct" in accordance to scientific advancement and healthcare demand. These peripheral, non-scientific concerns are not addressed at length in this manuscript; however they do exist, and their impact to the paradigm shifting healthcare transformation towards individualized medicine will be critical for its success.
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Affiliation(s)
- Jason H Sakamoto
- The University of Texas Health Science Center, Department of Nanomedicine and Biomedical Engineering, Houston, TX 77030, USA
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Santoro L, Grazioli L, Filippone A, Grassedonio E, Belli G, Colagrande S. Resovist enhanced MR imaging of the liver: Does quantitative assessment help in focal lesion classification and characterization? J Magn Reson Imaging 2009; 30:1012-20. [DOI: 10.1002/jmri.21937] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
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Zhang Z, Mascheri N, Dharmakumar R, Fan Z, Paunesku T, Woloschak G, Li D. Superparamagnetic iron oxide nanoparticle-labeled cells as an effective vehicle for tracking the GFP gene marker using magnetic resonance imaging. Cytotherapy 2009; 11:43-51. [PMID: 18956269 DOI: 10.1080/14653240802420243] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
BACKGROUND Detection of a gene using magnetic resonance imaging (MRI) is hindered by the magnetic resonance (MR) targeting gene technique. Therefore it may be advantageous to image gene-expressing cells labeled with superparamagnetic iron oxide (SPIO) nanoparticles by MRI. METHODS The GFP-R3230Ac (GFP) cell line was incubated for 24 h using SPIO nanoparticles at a concentration of 20 microg Fe/mL. Cell samples were prepared for iron content analysis and cell function evaluation. The labeled cells were imaged using fluorescent microscopy and MRI. RESULTS SPIO was used to label GFP cells effectively, with no effects on cell function and GFP expression. Iron-loaded GFP cells were successfully imaged with both fluorescent microscopy and T2*-weighted MRI. Prussian blue staining showed intracellular iron accumulation in the cells. All cells were labeled (100% labeling efficiency). The average iron content per cell was 4.75+/-0.11 pg Fe/cell (P<0.05 versus control). DISCUSSION This study demonstrates that the GFP expression of cells is not altered by the SPIO labeling process. SPIO-labeled GFP cells can be visualized by MRI; therefore, GFP, a gene marker, was tracked indirectly with the SPIO-loaded cells using MRI. The technique holds promise for monitoring the temporal and spatial migration of cells with a gene marker and enhancing the understanding of cell- and gene-based therapeutic strategies.
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Affiliation(s)
- Z Zhang
- Department of Radiology, Northwestern University, Chicago, Illinois 60611, USA
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Grazioli L, Bondioni MP, Romanini L, Frittoli B, Gambarini S, Donato F, Santoro L, Colagrande S. Superparamagnetic iron oxide-enhanced liver MRI with SHU 555 A (RESOVIST®): New protocol infusion to improve arterial phase evaluation-A prospective study. J Magn Reson Imaging 2009; 29:607-16. [DOI: 10.1002/jmri.21644] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
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Pech M, Ricke J, Seidensticker M, Staskiewicz G, Wieners G, Mohnike K, Ruhl R, Steinberg J, Wust P, Seidensticker P. Assessment of the tolerance dose of the hepatic reticulo-endothelial system (RES) after single fraction HDR-irradiation: an in-vivo study employing SSPIO. Int J Radiat Biol 2008; 84:830-7. [PMID: 18979318 DOI: 10.1080/09553000802389660] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
PURPOSE To prospectively assess a dose-response relationship for the hepatic reticulo-endothelial system (RES) after small volume single fraction irradiation of liver parenchyma in vivo. MATERIALS AND METHODS Twenty-five liver tumors were treated by computed tomography (CT)-guided interstitial brachytherapy. Magnetic resonance imaging (MRI) was performed 1 day before and 3 days, 6, 12 and 24 weeks after therapy. MR-sequences included T2-w Turbo Spin Echo (TSE) enhanced by hepatic RES targeted Standard Superparamagnetic Iron Oxide (SSPIO). All MRI data sets were merged with three dimensional (3D) dosimetry data and evaluated by two radiologists. We estimated the threshold dose for either edema or function loss as the D90. A match-pair analysis was performed with another 25 liver tumors, which were treated the same but had MRI follow-up using the hepatocyte specific MRI contrast media Gadobenate dimeglumine (Gd-BOPTA). RESULTS Three days post brachytherapy the D90 for hepatic RES function loss reached the 18.3 Gray (Gy) isosurface (Standard Deviation (SD) 7.7). At 6 weeks, the respective zone had increased significantly to the 12.9 Gy isosurface (SD 4.4). After 12 and 24 weeks, the dysfunction of liver volume decreased significantly to the 15 Gy and 20.4 Gy isosurface respectively (SD 7.1 and 10.0). Comparison to the hepatocyte function loss indicates a higher minimal threshold dose of the hepatic RES. CONCLUSION Hepatic RES demonstrated a high regenerative capacity and a higher minimal threshold dose than hepatocytes. Temporary function loss was found from the 13 Gy isosurface.
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Affiliation(s)
- Maciej Pech
- Universitatsklinik Magdeburg, Klinik fur Radiologie und Nuklearmedizin, Magdeburg, Germany.
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Magnetic Resonance Imaging of Liver Metastases: Experimental Comparison of Anionic and Conventional Superparamagnetic Iron Oxide Particles With a Hepatobiliary Contrast Medium During Dynamic and Uptake Phases. Invest Radiol 2008; 43:496-503. [DOI: 10.1097/rli.0b013e31816f1be1] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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Bangard C, Stippel DL, Berg F, Kasper HU, Hellmich M, Fischer JH, Hölscher A, Lackner K, Gossmann A. Conspicuity of zones of ablation after radiofrequency ablation in porcine livers: Comparison of an extracellular and an SPIO contrast agent. J Magn Reson Imaging 2008; 28:263-70. [DOI: 10.1002/jmri.21423] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
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