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Laser Ablation ICP-MS Analysis of Chemically Different Regions of Rat Prostate Gland with Implanted Cancer Cells. APPLIED SCIENCES-BASEL 2022. [DOI: 10.3390/app12031474] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
The comparison of tissues analyzed by LA-ICP-MS is challenging in many aspects, both medical and mathematical. The concept of distinguishing regions of interest (ROIs) was proposed in the literature, allowing for data reduction and targeted comparative analysis. ROIs can be drawn before any analysis, by indicating the anatomical parts of tissue, or after the first step of analysis, by using elemental distribution maps and characteristic regions of enrichment in selected elements. A simple method for identifying different regions, without the manual extraction of image fragments, is highly needed in biological experiments, where large groups of individuals (with samples taken from each of them) is very common. In the present study, two ROIs were distinguished: (1) tissue-rich in fat (and tissue-poor in water); and (2) tissue-rich in water (and tissue-poor in fat). ROIs were extracted mathematically, using an algorithm based on the relationship between 13C and 23Na signal intensities. A cut-off point was indicated in the point of the simultaneous decrease in 13C and increase in 23Na signal intensity. Separate analyses of chemically different ROIs allow for targeted comparison, which is a great advantage of laser ablation over liquid introductions to ICP-MS. In the present experiment, tissues were provided from animals with implanted prostate cancer cells as well as supplemented with mineral compounds particularly important both for prostate gland functions (Zn and Se) and neoplastic processes (Ca, Fe, and Cu). One of the goals was to try to determine whether dietary supplementation qualitatively and quantitatively affects the mineral composition of the prostate gland.
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2
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Liu J, Cui J, Wei X, Li W, Liu C, Li X, Chen M, Fan Y, Wang J. Investigation on selenium and mercury interactions and the distribution patterns in mice organs with LA-ICP-MS imaging. Anal Chim Acta 2021; 1182:338941. [PMID: 34602200 DOI: 10.1016/j.aca.2021.338941] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2021] [Revised: 08/04/2021] [Accepted: 08/11/2021] [Indexed: 10/20/2022]
Abstract
It is the first time to investigate local distribution patterns of mercury (Hg) in mice organs after Hg and Se exposure with detection of laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS). Two batch of adult mice were employed to be exposed to inorganic mercury (iHg) and methylmercury (MeHg) with or without Se at the dose of 55 μmol kg-1. Tissue sections of brain, kidney, liver, and spleen from one batch mice were prepared to get local imaging of Hg by LA-ICP-MS. Tissues from another batch mice were used to quantify Hg and Se in tissues with ICP-MS after acid digestion. The results indicated that, for mice exposed to iHg, Hg mainly distributed in kidney, a little in liver, and hardly in brain and spleen; for mice exposed to MeHg, lower amount of Hg was found in kidney, liver and spleen, and almost no Hg was found in brain. It was interesting that for Hg and Se co-administration groups, higher level of Hg was observed in kidney, liver, spleen and even in brain than single Hg administration groups. In addition, Se level in organ tissues increased obviously not only in Se exposure group but also in MeHg exposure group, while the phenomenon was not observed in iHg exposure group. HepG2 cells were employed to investigate Se and Hg interactions in single cell level, similar bioaccumulation behavior of Hg was found between cells and mice organs. Higher level of Hg was observed in cells cultured with Se and Hg medium than cells cultured with single Hg medium. The results are expected to provide new insight to investigate Hg and Se interactions in animal bodies and in-vitro cells.
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Affiliation(s)
- Jinhui Liu
- , Research Center for Analytical Sciences, Department of Chemistry, College of Sciences, Northeastern University, Shenyang 110819, China
| | - Jiasen Cui
- , School and Hospital of Stomatology, Department of Oral Pathology, China Medical University, Liaoning Provincial Key Laboratory of Oral Diseases. Shenyang, 110001, China
| | - Xing Wei
- , Research Center for Analytical Sciences, Department of Chemistry, College of Sciences, Northeastern University, Shenyang 110819, China
| | - Weitao Li
- , Research Center for Analytical Sciences, Department of Chemistry, College of Sciences, Northeastern University, Shenyang 110819, China
| | - Chunran Liu
- , School and Hospital of Stomatology, Department of Oral Pathology, China Medical University, Liaoning Provincial Key Laboratory of Oral Diseases. Shenyang, 110001, China
| | - Xuewen Li
- , School and Hospital of Stomatology, Department of Oral Pathology, China Medical University, Liaoning Provincial Key Laboratory of Oral Diseases. Shenyang, 110001, China
| | - Mingli Chen
- , Research Center for Analytical Sciences, Department of Chemistry, College of Sciences, Northeastern University, Shenyang 110819, China.
| | - Yu Fan
- , School and Hospital of Stomatology, Department of Oral Pathology, China Medical University, Liaoning Provincial Key Laboratory of Oral Diseases. Shenyang, 110001, China.
| | - Jianhua Wang
- , Research Center for Analytical Sciences, Department of Chemistry, College of Sciences, Northeastern University, Shenyang 110819, China.
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He J, Yang L, Hou X, Mester Z, Meija J. Determination of the Isotopic Composition of Gadolinium Using Multicollector Inductively Coupled Plasma Mass Spectrometry. Anal Chem 2020; 92:6103-6110. [PMID: 32267665 DOI: 10.1021/acs.analchem.0c00531] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
In this study, we report independent measurements of all stable isotope ratios of gadolinium. Our study employs multicollector inductively coupled plasma mass spectrometry (MC-ICPMS) with National Research Council Canada (NRC) HALF-1 isotopic hafnium standard as a primary calibrator and surveys four commercial gadolinium materials, including a NRC candidate isotopic reference material, GADS-1. The isotopic composition of gadolinium is determined using the regression model without reliance on conventional normalizing isotope ratios or mass-dependent isotope ratio correction models. In this work, all gadolinium isotope ratios were obtained from 160Gd/158Gd which, in turn, was measured from hafnium 178Hf/177Hf either directly or indirectly through 167Er/166Er. The latter approach was used for the final determination of gadolinium isotopic composition, as it provides smaller combined uncertainty. We report high-precision measurements of the isotopic composition of gadolinium, which support a revised standard atomic weight. Isotope amount ratios of R152/158 = 0.008 20(2)k=1, R154/158 = 0.087 98(12)k=1, R155/158 = 0.596 81(63)k=1, R156/158 = 0.825 08(57)k=1, R157/158 = 0.630 60(22)k=1, and R160/158 = 0.879 10(60)k=1, and the atomic weight of Ar(Gd) = 157.2502(6)k=1 were obtained for gadolinium in GADS-1.
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Affiliation(s)
- Juan He
- College of Chemistry, Sichuan University, Chengdu 610064, China.,National Research Council Canada, 1200 Montreal Road, Ottawa, Ontario K1A 0R6, Canada
| | - Lu Yang
- National Research Council Canada, 1200 Montreal Road, Ottawa, Ontario K1A 0R6, Canada
| | - Xiandeng Hou
- Analytical & Testing Center, Sichuan University, 29 Wangjiang Road, Chengdu, Sichuan 610064, China
| | - Zoltan Mester
- National Research Council Canada, 1200 Montreal Road, Ottawa, Ontario K1A 0R6, Canada
| | - Juris Meija
- National Research Council Canada, 1200 Montreal Road, Ottawa, Ontario K1A 0R6, Canada
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4
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Kevadiya BD, Ottemann B, Mukadam IZ, Castellanos L, Sikora K, Hilaire JR, Machhi J, Herskovitz J, Soni D, Hasan M, Zhang W, Anandakumar S, Garrison J, McMillan J, Edagwa B, Mosley RL, Vachet RW, Gendelman HE. Rod-shape theranostic nanoparticles facilitate antiretroviral drug biodistribution and activity in human immunodeficiency virus susceptible cells and tissues. Am J Cancer Res 2020; 10:630-656. [PMID: 31903142 PMCID: PMC6929995 DOI: 10.7150/thno.39847] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2019] [Accepted: 10/06/2019] [Indexed: 02/06/2023] Open
Abstract
Human immunodeficiency virus theranostics facilitates the development of long acting (LA) antiretroviral drugs (ARVs) by defining drug-particle cell depots. Optimal drug formulations are made possible based on precise particle composition, structure, shape and size. Through the creation of rod-shaped particles of defined sizes reflective of native LA drugs, theranostic probes can be deployed to measure particle-cell and tissue biodistribution, antiretroviral activities and drug retention. Methods: Herein, we created multimodal rilpivirine (RPV) 177lutetium labeled bismuth sulfide nanorods (177LuBSNRs) then evaluated their structure, morphology, configuration, chemical composition, biological responses and adverse reactions. Particle biodistribution was analyzed by single photon emission computed tomography (SPECT/CT) and laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) imaging. Results: Nanoformulated RPV and BSNRs-RPV particles showed comparable physicochemical and cell biological properties. Drug-particle pharmacokinetics (PK) and biodistribution in lymphoid tissue macrophages proved equivalent, one with the other. Rapid particle uptake and tissue distribution were observed, without adverse reactions, in primary blood-derived and tissue macrophages. The latter was seen within the marginal zones of spleen. Conclusions: These data, taken together, support the use of 177LuBSNRs as theranostic probes as a rapid assessment tool for PK LA ARV measurements.
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Masthoff M, Buchholz R, Beuker A, Wachsmuth L, Kraupner A, Albers F, Freppon F, Helfen A, Gerwing M, Höltke C, Hansen U, Rehkämper J, Vielhaber T, Heindel W, Eisenblätter M, Karst U, Wildgruber M, Faber C. Introducing Specificity to Iron Oxide Nanoparticle Imaging by Combining 57Fe-Based MRI and Mass Spectrometry. NANO LETTERS 2019; 19:7908-7917. [PMID: 31556617 DOI: 10.1021/acs.nanolett.9b03016] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Iron oxide nanoparticles (ION) are highly sensitive probes for magnetic resonance imaging (MRI) that have previously been used for in vivo cell tracking and have enabled implementation of several diagnostic tools to detect and monitor disease. However, the in vivo MRI signal of ION can overlap with the signal from endogenous iron, resulting in a lack of detection specificity. Therefore, the long-term fate of administered ION remains largely unknown, and possible tissue deposition of iron cannot be assessed with established methods. Herein, we combine nonradioactive 57Fe-ION MRI with ex vivo laser ablation-inductively coupled plasma-mass spectrometry (LA-ICP-MS) imaging, enabling unambiguous differentiation between endogenous iron (56Fe) and iron originating from applied ION in mice. We establish 57Fe-ION as an in vivo MRI sensor for cell tracking in a mouse model of subcutaneous inflammation and for assessing the long-term fate of 57Fe-ION. Our approach resolves the lack of detection specificity in ION imaging by unambiguously recording a 57Fe signature.
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Affiliation(s)
- Max Masthoff
- Translational Research Imaging Center, Institute of Clinical Radiology , University Hospital Muenster , 48149 Muenster , Germany
| | - Rebecca Buchholz
- Institute for Inorganic and Analytical Chemistry, University of Muenster , 48149 Muenster , Germany
| | - Andre Beuker
- Translational Research Imaging Center, Institute of Clinical Radiology , University Hospital Muenster , 48149 Muenster , Germany
| | - Lydia Wachsmuth
- Translational Research Imaging Center, Institute of Clinical Radiology , University Hospital Muenster , 48149 Muenster , Germany
| | | | - Franziska Albers
- Translational Research Imaging Center, Institute of Clinical Radiology , University Hospital Muenster , 48149 Muenster , Germany
| | - Felix Freppon
- Translational Research Imaging Center, Institute of Clinical Radiology , University Hospital Muenster , 48149 Muenster , Germany
| | - Anne Helfen
- Translational Research Imaging Center, Institute of Clinical Radiology , University Hospital Muenster , 48149 Muenster , Germany
| | - Mirjam Gerwing
- Translational Research Imaging Center, Institute of Clinical Radiology , University Hospital Muenster , 48149 Muenster , Germany
| | - Carsten Höltke
- Translational Research Imaging Center, Institute of Clinical Radiology , University Hospital Muenster , 48149 Muenster , Germany
| | - Uwe Hansen
- Institute for Musculoskeletal Medicine , University Hospital Muenster , 48149 Muenster , Germany
| | - Jan Rehkämper
- Institute of Pathology , University Hospital Muenster , 48149 Muenster , Germany
| | - Torsten Vielhaber
- Institute for Inorganic and Analytical Chemistry, University of Muenster , 48149 Muenster , Germany
| | - Walter Heindel
- Translational Research Imaging Center, Institute of Clinical Radiology , University Hospital Muenster , 48149 Muenster , Germany
| | - Michel Eisenblätter
- Translational Research Imaging Center, Institute of Clinical Radiology , University Hospital Muenster , 48149 Muenster , Germany
| | - Uwe Karst
- Institute for Inorganic and Analytical Chemistry, University of Muenster , 48149 Muenster , Germany
- DFG Cluster of Excellence EXC 1003 "Cells in Motion" , University of Muenster , 48149 Muenster , Germany
| | - Moritz Wildgruber
- Translational Research Imaging Center, Institute of Clinical Radiology , University Hospital Muenster , 48149 Muenster , Germany
- DFG Cluster of Excellence EXC 1003 "Cells in Motion" , University of Muenster , 48149 Muenster , Germany
| | - Cornelius Faber
- Translational Research Imaging Center, Institute of Clinical Radiology , University Hospital Muenster , 48149 Muenster , Germany
- DFG Cluster of Excellence EXC 1003 "Cells in Motion" , University of Muenster , 48149 Muenster , Germany
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Chen B, Lum JTS, Huang Y, Hu B, Leung KSY. Integration of sub-organ quantitative imaging LA-ICP-MS and fractionation reveals differences in translocation and transformation of CeO 2 and Ce 3+ in mice. Anal Chim Acta 2019; 1082:18-29. [PMID: 31472707 DOI: 10.1016/j.aca.2019.07.044] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2019] [Revised: 07/14/2019] [Accepted: 07/21/2019] [Indexed: 11/24/2022]
Abstract
Information on the risk of exposure to cerium oxide (CeO2) nanoparticles (NPs) is limited. To assess risk, we must know where and how such NPs are distributed to the body after exposure, both short- and long-term. In this work, an integrated approach of quantitative LA-ICP-MS bioimaging and fractionation was employed to study the translocation and transformation of CeO2 and Ce3+ in mouse spleen and liver. The complementary information retrieved by the two techniques above on the accumulation of Ce and dissolution/aggregation were found consistent. In brief, a detailed fine scanning of a region of interest in the organ was performed after fast-screening at low spatial resolution. In the spleen, after short-term high-dose exposure, CeO2 NPs was found mainly in the marginal zone and caused an up-regulation of Zn in the white pulp. After long-term low-dose exposure, CeO2 was found in the marginal zone and white pulp. In the liver, CeO2 NPs were mainly distributed in the Kupffer cells and lobule periphery. The high spatial resolution LA maps of H&E-stained liver sections allowed imaging close to cell level; this enabled an estimation of Ce content in Kupffer cells. Furthermore, fractionation by ultrafiltration was also employed to differentiate the ionic and NP species in the organs. This fractionation showed aggregation of Ce ions in spleen, supporting the LA-ICP-MS results. Transmission electron microscopy revealed that long-term CeO2 exposure triggered an immune response to infection in the spleen and confirmed the differential deposition of Ce in the marginal zone. The integrated analyses based on ICP-MS together with histology and TEM investigation suggests that long-term low doses of CeO2 NPs may cause toxicity in the liver and impair functions of the immune system.
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Affiliation(s)
- Beibei Chen
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, 430072, China; Department of Chemistry, Hong Kong Baptist University, Kowloon Tong, Hong Kong Special Administrative Region
| | - Judy Tsz-Shan Lum
- Department of Chemistry, Hong Kong Baptist University, Kowloon Tong, Hong Kong Special Administrative Region
| | - Yingyan Huang
- Department of Chemistry, Hong Kong Baptist University, Kowloon Tong, Hong Kong Special Administrative Region
| | - Bin Hu
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, 430072, China.
| | - Kelvin Sze-Yin Leung
- Department of Chemistry, Hong Kong Baptist University, Kowloon Tong, Hong Kong Special Administrative Region; HKBU Institute of Research and Continuing Education, Shenzhen Virtual University Park, Shenzhen, China.
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7
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Complementarity of molecular and elemental mass spectrometric imaging of Gadovist ™ in mouse tissues. Anal Bioanal Chem 2018; 411:629-637. [PMID: 30456604 DOI: 10.1007/s00216-018-1477-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2018] [Revised: 10/30/2018] [Accepted: 11/05/2018] [Indexed: 12/21/2022]
Abstract
Drug biodistribution analyses can be considered a key issue in pharmaceutical discovery and development. Here, mass spectrometric imaging can be employed as a powerful tool to investigate distributions of drug compounds in biologically and medically relevant tissue sections. Both matrix-assisted laser desorption ionization-mass spectrometric imaging as molecular method and laser ablation inductively coupled plasma-mass spectrometric imaging as elemental detection method were applied to determine drug distributions in tissue thin sections. Several mouse organs including the heart, kidney, liver, and brain were analyzed with regard to distribution of Gadovist™, a gadolinium-based contrast agent already approved for clinical investigation. This work demonstrated the successful detection and localization of Gadovist™ in several organs. Furthermore, the results gave evidence that gadolinium-based contrast agents in general can be well analyzed by mass spectrometric imaging methods. In conclusion, the combined application of molecular and elemental mass spectrometry could complement each other and thus confirm analytical results or provide additional information.
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8
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New procedure of quantitative mapping of Ti and Al released from dental implant and Mg, Ca, Fe, Zn, Cu, Mn as physiological elements in oral mucosa by LA-ICP-MS. Talanta 2017; 175:370-381. [DOI: 10.1016/j.talanta.2017.07.058] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2017] [Revised: 07/19/2017] [Accepted: 07/20/2017] [Indexed: 11/19/2022]
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9
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Heterogeneous intratumoral distribution of gadolinium nanoparticles within U87 human glioblastoma xenografts unveiled by micro-PIXE imaging. Anal Biochem 2017; 523:50-57. [DOI: 10.1016/j.ab.2017.02.010] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2016] [Revised: 02/09/2017] [Accepted: 02/15/2017] [Indexed: 12/30/2022]
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10
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Sussulini A, Becker JS, Becker JS. Laser ablation ICP-MS: Application in biomedical research. MASS SPECTROMETRY REVIEWS 2017; 36:47-57. [PMID: 26398248 DOI: 10.1002/mas.21481] [Citation(s) in RCA: 68] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/07/2015] [Accepted: 08/27/2015] [Indexed: 06/05/2023]
Abstract
In the last decade, the development of diverse bioanalytical methodologies based on mass spectrometry imaging has increased, as has their application in biomedical questions. The distribution analysis of elements (metals, semimetals, and non-metals) in biological samples is a point of interest in life sciences, especially within the context of metallomics, which is the scientific field that encompasses the global analysis of the entirety of elemental species inside a cell or tissue. Laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) has been efficiently employed to generate qualitative and quantitative maps of elemental distribution in thin tissue sections of a variety of biological samples, for example, brain, cartilage, spinal cord, etc. The combination of elemental with molecular mass spectrometry allows obtaining information about the elements bound to proteins, when they are previously separated by gel electrophoresis (metalloproteomics), and also adding a new dimension to molecular mass spectrometry imaging by the correlation of molecular and elemental distribution maps in definite regions in a biological tissue. In the present review, recent biomedical applications in LA-ICP-MS imaging as a stand-alone technique and in combination with molecular mass spectrometry imaging techniques are discussed. Applications of LA-ICP-MS in the study of neurodegenerative diseases, distribution of contrast agents and metallodrugs, and metalloproteomics will be focused in this review. © 2015 Wiley Periodicals, Inc. Mass Spec Rev 36:47-57, 2017.
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Affiliation(s)
- Alessandra Sussulini
- Department of Analytical Chemistry, Institute of Chemistry, Universidade Estadual de Campinas, P.O. Box 6154, 13083-970, Campinas, SP, Brazil
| | | | - Johanna Sabine Becker
- Zentralinstitut für Engineering, Elektronik und Analytik, Analytik (ZEA-3), Forschungszentrum Jülich, D-52425, Jülich, Germany
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11
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Elci SG, Yan B, Kim ST, Saha K, Jiang Y, Klemmer GA, Moyano DF, Tonga GY, Rotello VM, Vachet RW. Quantitative imaging of 2 nm monolayer-protected gold nanoparticle distributions in tissues using laser ablation inductively-coupled plasma mass spectrometry (LA-ICP-MS). Analyst 2016; 141:2418-25. [PMID: 26979648 DOI: 10.1039/c6an00123h] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Functionalized gold nanoparticles (AuNPs) have unique properties that make them important biomedical materials. Optimal use of these materials, though, requires an understanding of their fate in vivo. Here we describe the use of laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) to image the biodistributions of AuNPs in tissues from mice intravenously injected with AuNPs. We demonstrate for the first time that the distributions of very small (∼2 nm core) monolayer-protected AuNPs can be imaged in animal tissues at concentrations in the low parts-per-billion range. Moreover, the LA-ICP-MS images reveal that the monolayer coatings on the injected AuNPs influence their distributions, suggesting that the AuNPs remain intact in vivo and their surface chemistry influences how they interact with different organs. We also demonstrate that quantitative images of the AuNPs can be generated when the appropriate tissue homogenates are chosen for matrix matching. Overall, these results demonstrate the utility of LA-ICP-MS for tracking the fate of biomedically-relevant AuNPs in vivo, facilitating the design of improved AuNP-based therapeutics.
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Affiliation(s)
- S Gokhan Elci
- Deparment of Chemistry, University of Massachusetts, 710 North Pleasant Street, Amherst, MA 01002, USA.
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12
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Niehoff AC, Wachsmuth L, Schmid F, Sperling M, Faber C, Karst U. Quantification of Manganese Enhanced Magnetic Resonance Imaging based on Spatially Resolved Elemental Mass Spectrometry. ChemistrySelect 2016. [DOI: 10.1002/slct.201600058] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Ann-Christin Niehoff
- Institute of Inorganic and Analytical Chemistry; University of Münster; Corrensstr. 30 48149 Münster Germany
- NRW Graduate School of Chemistry; University of Münster
| | - Lydia Wachsmuth
- Department of Clinical Radiology; University Hospital Münster; Albert-Schweitzer-Campus 1 48149 Münster Germany
| | - Florian Schmid
- Department of Clinical Radiology; University Hospital Münster; Albert-Schweitzer-Campus 1 48149 Münster Germany
| | - Michael Sperling
- Institute of Inorganic and Analytical Chemistry; University of Münster; Corrensstr. 30 48149 Münster Germany
| | - Cornelius Faber
- Department of Clinical Radiology; University Hospital Münster; Albert-Schweitzer-Campus 1 48149 Münster Germany
| | - Uwe Karst
- Institute of Inorganic and Analytical Chemistry; University of Münster; Corrensstr. 30 48149 Münster Germany
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13
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Rosca EV, Wright M, Gonitel R, Gedroyc W, Miller AD, Thanou M. Thermosensitive, near-infrared-labeled nanoparticles for topotecan delivery to tumors. Mol Pharm 2015; 12:1335-46. [PMID: 25826624 DOI: 10.1021/mp5002679] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Liposomal nanoparticles have proven to be versatile systems for drug delivery. However, the progress in clinic has been slower and less efficient than expected. This suggests a need for further development using carefully designed chemical components to improve usefulness under clinical conditions and maximize therapeutic effect. For cancer chemotherapy, PEGylated liposomes were the first nanomedicine to reach the market and have been used clinically for several years. Approaches toward targeted drug delivery using next generation "thermally triggered" nanoparticles are now in clinical trials. However, clinically tested thermosensitive liposomes (TSLs) lack the markers that allow tumor labeling and improved imaging for tissue specific applied hyperthermia. Here we describe the development of optically labeled TSLs for image guidance drug delivery and proof-of-concept results for their application in the treatment of murine xenograft tumors using the anticancer drug topotecan. These labeled TSLs also allow the simultaneous, real-time diagnostic imaging of nanoparticle biodistribution using a near-infrared (NIR; 750-950 nm) fluorophore coupled to a lipidic component of the lipid bilayer. When combined with multispectral fluorescence analysis, this allows for specific and high sensitivity tracking of the nanoparticles in vivo. The application of NIR fluorescence-labeled TSLs could have a transformative effect on future cancer chemotherapy.
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Affiliation(s)
- Elena V Rosca
- †Institute of Pharmaceutical Science, King's College London, London, U.K
| | - Michael Wright
- †Institute of Pharmaceutical Science, King's College London, London, U.K
| | - Roman Gonitel
- †Institute of Pharmaceutical Science, King's College London, London, U.K
| | - Wladyslaw Gedroyc
- §Department of Experimental Medicine, Imperial College London, London, U.K
| | - Andrew D Miller
- †Institute of Pharmaceutical Science, King's College London, London, U.K
| | - Maya Thanou
- †Institute of Pharmaceutical Science, King's College London, London, U.K
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14
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Reifschneider O, Wentker KS, Strobel K, Schmidt R, Masthoff M, Sperling M, Faber C, Karst U. Elemental Bioimaging of Thulium in Mouse Tissues by Laser Ablation-ICPMS as a Complementary Method to Heteronuclear Proton Magnetic Resonance Imaging for Cell Tracking Experiments. Anal Chem 2015; 87:4225-30. [DOI: 10.1021/ac504363q] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Olga Reifschneider
- Westfälische Wilhelms-Universität Münster, Institute of Inorganic and Analytical Chemistry, Corrensstr. 30, 48149 Münster, Germany
| | - Kristina S. Wentker
- Westfälische Wilhelms-Universität Münster, Institute of Inorganic and Analytical Chemistry, Corrensstr. 30, 48149 Münster, Germany
| | - Klaus Strobel
- Westfälische-Wilhelms-Universität Münster, University Hospital, Department of Clinical Radiology, Albert-Schweitzer-Campus 1, 48149 Münster, Germany
| | - Rebecca Schmidt
- Westfälische-Wilhelms-Universität Münster, University Hospital, Department of Clinical Radiology, Albert-Schweitzer-Campus 1, 48149 Münster, Germany
| | - Max Masthoff
- Westfälische-Wilhelms-Universität Münster, University Hospital, Department of Clinical Radiology, Albert-Schweitzer-Campus 1, 48149 Münster, Germany
| | - Michael Sperling
- Westfälische Wilhelms-Universität Münster, Institute of Inorganic and Analytical Chemistry, Corrensstr. 30, 48149 Münster, Germany
- European Virtual Institute for Speciation Analysis (EVISA), Mendelstr. 11, 48149 Münster, Germany
| | - Cornelius Faber
- Westfälische-Wilhelms-Universität Münster, University Hospital, Department of Clinical Radiology, Albert-Schweitzer-Campus 1, 48149 Münster, Germany
| | - Uwe Karst
- Westfälische Wilhelms-Universität Münster, Institute of Inorganic and Analytical Chemistry, Corrensstr. 30, 48149 Münster, Germany
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Birka M, Wentker KS, Lusmöller E, Arheilger B, Wehe CA, Sperling M, Stadler R, Karst U. Diagnosis of nephrogenic systemic fibrosis by means of elemental bioimaging and speciation analysis. Anal Chem 2015; 87:3321-8. [PMID: 25708271 DOI: 10.1021/ac504488k] [Citation(s) in RCA: 101] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
The combined use of elemental bioimaging and speciation analysis is presented as a novel means for the diagnosis of nephrogenic systemic fibrosis (NSF), a rare disease occurring after administration of gadolinium-based contrast agents (GBCA) for magnetic resonance imaging (MRI), in skin samples of patients suffering from renal insufficiency. As the pathogenesis of NSF is still largely unknown particularly with regard to the distribution and potential retention of gadolinium in the human organism, a skin biopsy sample from a suspected NSF patient was investigated. The combination of inductively coupled plasma mass spectrometry (ICP-MS), laser ablation (LA) ICP-MS for quantitative elemental bioimaging, and hydrophilic interaction liquid chromatography (HILIC) ICP-MS for speciation analysis allowed one to unambiguously diagnose the patient as a case of NSF. By means of ICP-MS, a total gadolinium concentration from 3.02 to 4.58 mg/kg was determined in the biopsy sample, indicating a considerable deposition of gadolinium in the patient's skin. LA-ICP-MS revealed a distinctly inhomogeneous distribution of gadolinium as well as concentrations of up to 400 mg/kg in individual sections of the skin biopsy. Furthermore, the correlation between the distributions of phosphorus and gadolinium suggests the presence of GdPO4 deposits in the tissue section. Speciation analysis by means of HILIC-ICP-MS showed the presence of the intact GBCA Gd-HP-DO3A eight years after the administration to the patient. The concentration of the contrast agent in the aqueous extract of the skin biopsy was found to be 1.76 nmol/L. Moreover, evidence for the presence of further highly polar gadolinium species in low concentrations was found.
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Affiliation(s)
- Marvin Birka
- †University of Münster, Institute of Inorganic and Analytical Chemistry, Corrensstraße 30, 48149 Münster, Germany
| | - Kristina S Wentker
- †University of Münster, Institute of Inorganic and Analytical Chemistry, Corrensstraße 30, 48149 Münster, Germany
| | - Elke Lusmöller
- §Johannes Wesling Klinikum Minden, Hautklinik, Hans-Nolte Straße 1, 32429 Minden, Germany
| | - Brigit Arheilger
- §Johannes Wesling Klinikum Minden, Hautklinik, Hans-Nolte Straße 1, 32429 Minden, Germany
| | - Christoph A Wehe
- †University of Münster, Institute of Inorganic and Analytical Chemistry, Corrensstraße 30, 48149 Münster, Germany
| | - Michael Sperling
- †University of Münster, Institute of Inorganic and Analytical Chemistry, Corrensstraße 30, 48149 Münster, Germany.,‡European Virtual Institute for Speciation Analysis (EVISA), Mendelstraße 11, 48149 Münster, Germany
| | - Rudolf Stadler
- §Johannes Wesling Klinikum Minden, Hautklinik, Hans-Nolte Straße 1, 32429 Minden, Germany
| | - Uwe Karst
- †University of Münster, Institute of Inorganic and Analytical Chemistry, Corrensstraße 30, 48149 Münster, Germany
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16
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Bioimaging mass spectrometry of trace elements – recent advance and applications of LA-ICP-MS: A review. Anal Chim Acta 2014; 835:1-18. [DOI: 10.1016/j.aca.2014.04.048] [Citation(s) in RCA: 175] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2013] [Revised: 04/18/2014] [Accepted: 04/19/2014] [Indexed: 01/03/2023]
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17
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Metabolomic profiling of neoplastic lesions in mice. Methods Enzymol 2014. [PMID: 24924137 DOI: 10.1016/b978-0-12-801329-8.00013-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/30/2023]
Abstract
Most cancers develop upon the accumulation of genetic alterations that provoke and sustain the transformed phenotype. Several metabolomic approaches now allow for the global assessment of intermediate metabolites, generating profound insights into the metabolic rewiring associated with malignant transformation. The metabolomic profiling of neoplastic lesions growing in mice, irrespective of their origin, can provide invaluable information on the mechanisms underlying oncogenesis, tumor progression, and response to therapy. Moreover, the metabolomic profiling of tumors growing in mice may result in the identification of novel diagnostic or prognostic biomarkers, which is of great clinical significance. Several methods can be applied to the metabolomic profiling of neoplastic lesions in mice, including mass spectrometry-based techniques (e.g., gas chromatography-, capillary electrophoresis-, or liquid chromatography-coupled mass spectrometry) as well as nuclear magnetic resonance. Here, we compare and discuss the advantages and disadvantages of all these techniques to provide a concise and reliable guide for readers interested in this active area of investigation.
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Managh AJ, Edwards SL, Bushell A, Wood KJ, Geissler EK, Hutchinson JA, Hutchinson RW, Reid HJ, Sharp BL. Single Cell Tracking of Gadolinium Labeled CD4+ T Cells by Laser Ablation Inductively Coupled Plasma Mass Spectrometry. Anal Chem 2013; 85:10627-34. [DOI: 10.1021/ac4022715] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Amy J. Managh
- Centre
for Analytical Science, Department of Chemistry, Loughborough University, Loughborough, Leicestershire, LE11 3TU, United Kingdom
| | - Sheldon L. Edwards
- Nuffield
Department of Surgical Sciences, University of Oxford, John Radcliffe Hospital, Headington, Oxford, OX3
9DU, United Kingdom
| | - Andrew Bushell
- Nuffield
Department of Surgical Sciences, University of Oxford, John Radcliffe Hospital, Headington, Oxford, OX3
9DU, United Kingdom
| | - Kathryn J. Wood
- Nuffield
Department of Surgical Sciences, University of Oxford, John Radcliffe Hospital, Headington, Oxford, OX3
9DU, United Kingdom
| | - Edward K. Geissler
- Division
of Experimental Surgery, Department of Surgery, University Hospital Regensburg, Regensburg, Bavaria, 93053, Germany
| | - James A. Hutchinson
- Division
of Experimental Surgery, Department of Surgery, University Hospital Regensburg, Regensburg, Bavaria, 93053, Germany
| | - Robert W. Hutchinson
- Electro Scientific Industries, 8 Avro Court, Ermine Business Park, Huntingdon, Cambridgeshire, PE29 6XS, United Kingdom
| | - Helen J. Reid
- Centre
for Analytical Science, Department of Chemistry, Loughborough University, Loughborough, Leicestershire, LE11 3TU, United Kingdom
| | - Barry L. Sharp
- Centre
for Analytical Science, Department of Chemistry, Loughborough University, Loughborough, Leicestershire, LE11 3TU, United Kingdom
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He X, Ma Y, Li M, Zhang P, Li Y, Zhang Z. Quantifying and imaging engineered nanomaterials in vivo: challenges and techniques. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2013; 9:1482-1491. [PMID: 23027545 DOI: 10.1002/smll.201201502] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2012] [Revised: 07/24/2012] [Indexed: 06/01/2023]
Abstract
Quantifying and imaging the engineered nanomaterials (ENMs) in vivo can provide information on the bio-distribution and fate of ENMs in living systems. A necessary amount of in vivo quantitative data is indispensable to verify the extrapolation from in vitro tests, to modify the predictive models of ENM exposure, and to underpin the risk management strategy for ENMs. However, it remains a challenge to quantitatively assess the bio-distribution of ENMs under realistic exposure, their long-term deposition (especially in non-targeted tissues), their passage across the natural barriers, and the impacts of nano-bio interactions on their in vivo behaviors. Some commonly used techniques for in vivo ENM quantification, such as electron microscopy, fluorescence-based detection, atomic spectroscopy, radiotracing, and techniques basing on synchrotron radiation are reviewed, and their technical characteristics, the state of the art, limitations, and future prospects are addressed.
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Affiliation(s)
- Xiao He
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety and CAS Key Laboratory of Nuclear Analytical Techniques, Institute of High Energy Physics, Chinese Academy of Sciences (CAS), Beijing 100049, China.
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MRI-Guided Focused Ultrasound as a New Method of Drug Delivery. JOURNAL OF DRUG DELIVERY 2013; 2013:616197. [PMID: 23738076 PMCID: PMC3666208 DOI: 10.1155/2013/616197] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/18/2012] [Accepted: 02/05/2013] [Indexed: 02/01/2023]
Abstract
Ultrasound-mediated drug delivery under the guidance of an imaging modality can improve drug disposition and achieve site-specific drug delivery. The term focal drug delivery has been introduced to describe the focal targeting of drugs in tissues with the help of imaging and focused ultrasound. Focal drug delivery aims to improve the therapeutic profile of drugs by improving their specificity and their permeation in defined areas. Focused-ultrasound- (FUS-) mediated drug delivery has been applied with various molecules to improve their local distribution in tissues. FUS is applied with the aid of microbubbles to enhance the permeability of bioactive molecules across BBB and improve drug distribution in the brain. Recently, FUS has been utilised in combination with MRI-labelled liposomes that respond to temperature increase. This strategy aims to "activate" nanoparticles to release their cargo locally when triggered by hyperthermia induced by FUS. MRI-guided FUS drug delivery provides the opportunity to improve drug bioavailability locally and therefore improve the therapeutic profiles of drugs. This drug delivery strategy can be directly translated to clinic as MRg FUS is a promising clinically therapeutic approach. However, more basic research is required to understand the physiological mechanism of FUS-enhanced drug delivery.
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Mitchell N, Kalber TL, Cooper MS, Sunassee K, Chalker SL, Shaw KP, Ordidge KL, Badar A, Janes SM, Blower PJ, Lythgoe MF, Hailes HC, Tabor AB. Incorporation of paramagnetic, fluorescent and PET/SPECT contrast agents into liposomes for multimodal imaging. Biomaterials 2013; 34:1179-92. [PMID: 23131536 PMCID: PMC3520009 DOI: 10.1016/j.biomaterials.2012.09.070] [Citation(s) in RCA: 63] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2012] [Accepted: 09/28/2012] [Indexed: 12/20/2022]
Abstract
A series of metal-chelating lipid conjugates has been designed and synthesized. Each member of the series bears a 1,4,7,10-tetraazacyclododecane-1,4,7,10-tetraacetic acid (DOTA) macrocycle attached to the lipid head group, using short n-ethylene glycol (n-EG) spacers of varying length. Liposomes incorporating these lipids, chelated to Gd(3+), (64)Cu(2+), or (111)In(3+), and also incorporating fluorescent lipids, have been prepared, and their application in optical, magnetic resonance (MR) and single-photon emission tomography (SPECT) imaging of cellular uptake and distribution investigated in vitro and in vivo. We have shown that these multimodal liposomes can be used as functional MR contrast agents as well as radionuclide tracers for SPECT, and that they can be optimized for each application. When shielded liposomes were formulated incorporating 50% of a lipid with a short n-EG spacer, to give nanoparticles with a shallow but even coverage of n-EG, they showed good cellular internalization in a range of tumour cells, compared to the limited cellular uptake of conventional shielded liposomes formulated with 7% 1,2-distearoyl-sn-glycero-3-phosphoethanolamine-N-[carboxy(polyethyleneglycol)(2000)] (DSPE-PEG2000). Moreover, by matching the depth of n-EG coverage to the length of the n-EG spacers of the DOTA lipids, we have shown that similar distributions and blood half lives to DSPE-PEG2000-stabilized liposomes can be achieved. The ability to tune the imaging properties and distribution of these liposomes allows for the future development of a flexible tri-modal imaging agent.
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Key Words
- dota-lipid
- liposome
- mri (magnetic resonance imaging)
- peg (poly(ethylene)glycol)
- spect (single-photon emission tomography)
- dcc, n,n-dicyclohexylcarbodiimide
- deg1sl, dioleylethyleneglycol-1-succidimidyl linker
- deg3sl, dioleylethyleneglycol-3-succidimidyl linker
- deg6sl, dioleylethyleneglycol-6-succidimidyl linker
- dodeg4, dioleyldimethyl ethylene glycol 4
- dope, 1,2-dioleoyl-sn-glycero-3-phosphoethanolamine
- dota, 1,4,7,10-tetraazacyclododecane-1,4,7,10-tetraacetic acid
- dotma, n-[1-(2,3-dioleyloxy)propyl]-n,n,n-trimethylammonium chloride
- dspe-peg2000, 1,2-distearoyl-sn-glycero-3-phosphoethanolamine-n-[carboxy(polyethyleneglycol)2000]
- dtpa, diethylenetriamine pentacetic acid
- n-eg, n-ethylene glycol
- epr, enhanced permeability and retention effect
- fl-dhpe, n-(fluorescein-5-thiocarbamoyl)-1,2-dihexa-decanoyl-sn-glycero-3-phosphoethanolamine
- hbtu, o-(benzotriazol-1-yl)-n,n,n′,n′-tetramethyluronium hexafluorophosphate
- itlc, instant thin layer chromatography
- mr, magnetic resonance
- peg, polyethylene glycol
- pet, positron emission tomography
- res, reticuloendothelial system
- spect, single-photon emission tomography
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Affiliation(s)
- Nick Mitchell
- Department of Chemistry, University College London, Christopher Ingold Laboratories, 20 Gordon St, London WC1H 0AJ, UK
| | - Tammy L. Kalber
- Centre of Advanced Biomedical Imaging, Division of Medicine and Institute of Child Health, University College London, 72 Huntley Street, WC1E 6DD, UK
- Centre for Respiratory Research, University College London, Rayne Building, 5 University Street, WC1E 6JJ, UK
| | - Margaret S. Cooper
- King's College London, St. Thomas' Hospital, Division of Imaging Sciences and Biomedical Engineering, 4th Floor, Lambeth Wing, St Thomas' Hospital, London SE1 7EH, UK
| | - Kavitha Sunassee
- King's College London, St. Thomas' Hospital, Division of Imaging Sciences and Biomedical Engineering, 4th Floor, Lambeth Wing, St Thomas' Hospital, London SE1 7EH, UK
| | - Samantha L. Chalker
- Department of Chemistry, University College London, Christopher Ingold Laboratories, 20 Gordon St, London WC1H 0AJ, UK
- Royal Institution of Great Britain, Davy Faraday Research Laboratories, 21 Albemarle Street, London W1S 4BS, UK
| | - Karen P. Shaw
- Centre for Respiratory Research, University College London, Rayne Building, 5 University Street, WC1E 6JJ, UK
| | - Katherine L. Ordidge
- Centre of Advanced Biomedical Imaging, Division of Medicine and Institute of Child Health, University College London, 72 Huntley Street, WC1E 6DD, UK
- Centre for Respiratory Research, University College London, Rayne Building, 5 University Street, WC1E 6JJ, UK
| | - Adam Badar
- Centre of Advanced Biomedical Imaging, Division of Medicine and Institute of Child Health, University College London, 72 Huntley Street, WC1E 6DD, UK
| | - Samuel M. Janes
- Centre for Respiratory Research, University College London, Rayne Building, 5 University Street, WC1E 6JJ, UK
| | - Philip J. Blower
- King's College London, St. Thomas' Hospital, Division of Imaging Sciences and Biomedical Engineering, 4th Floor, Lambeth Wing, St Thomas' Hospital, London SE1 7EH, UK
- King's College London, Division of Chemistry, Hodgkin Building, Guy's Campus, London SE1 1UL, UK
| | - Mark F. Lythgoe
- Centre of Advanced Biomedical Imaging, Division of Medicine and Institute of Child Health, University College London, 72 Huntley Street, WC1E 6DD, UK
| | - Helen C. Hailes
- Department of Chemistry, University College London, Christopher Ingold Laboratories, 20 Gordon St, London WC1H 0AJ, UK
| | - Alethea B. Tabor
- Department of Chemistry, University College London, Christopher Ingold Laboratories, 20 Gordon St, London WC1H 0AJ, UK
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22
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Sussulini A, Wiener E, Marnitz T, Wu B, Müller B, Hamm B, Sabine Becker J. Quantitative imaging of the tissue contrast agent [Gd(DTPA)]2−in articular cartilage by laser ablation inductively coupled plasma mass spectrometry. CONTRAST MEDIA & MOLECULAR IMAGING 2012; 8:204-9. [DOI: 10.1002/cmmi.1509] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/23/2012] [Revised: 08/21/2012] [Accepted: 08/29/2012] [Indexed: 11/09/2022]
Affiliation(s)
- Alessandra Sussulini
- Central Division of Analytical Chemistry; Forschungszentrum Jülich; D-52425; Jülich; Germany
| | - Edzard Wiener
- Charité - Universitätsmedizin Berlin; Department of Radiology; Charitéplatz 1; D-10117; Berlin; Germany
| | - Tim Marnitz
- Charité - Universitätsmedizin Berlin; Department of Radiology; Charitéplatz 1; D-10117; Berlin; Germany
| | - Bei Wu
- Central Division of Analytical Chemistry; Forschungszentrum Jülich; D-52425; Jülich; Germany
| | - Berit Müller
- Charité - Universitätsmedizin Berlin; Department of Pathology; Charitéplatz 1; D-10117; Berlin; Germany
| | - Bernd Hamm
- Charité - Universitätsmedizin Berlin; Department of Radiology; Charitéplatz 1; D-10117; Berlin; Germany
| | - J. Sabine Becker
- Central Division of Analytical Chemistry; Forschungszentrum Jülich; D-52425; Jülich; Germany
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Gadolinium- and 5-aminolevulinic acid-induced protoporphyrin IX levels in human gliomas: an ex vivo quantitative study to correlate protoporphyrin IX levels and blood-brain barrier breakdown. J Neuropathol Exp Neurol 2012; 71:806-13. [PMID: 22878664 DOI: 10.1097/nen.0b013e31826775a1] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
In recent years, 5-aminolevulinic acid (ALA)-induced protoporphyrin IX (PpIX) fluorescence guidance has been used as a surgical adjunct to improve the extent of resection of gliomas. Exogenous administration of ALA before surgery leads to the accumulation of red fluorescent PpIX in tumor tissue that the surgeon can visualize and thereby discriminate between normal and tumor tissue. Selective accumulation of PpIX has been linked to numerous factors, of which blood-brain barrier breakdown has been suggested to be a key factor. To test the hypothesis that PpIX concentration positively correlates with gadolinium (Gd) concentrations, we performed ex vivo measurements of PpIX and of Gd using inductively coupled plasma mass spectrometry, the latter as a quantitative biomarker of blood-brain barrier breakdown; this was corroborated with immunohistochemistry of microvascular density in surgical biopsies of patients undergoing fluorescence-guided surgery for glioma. We found positive correlations between PpIX concentration and Gd concentration (r = 0.58, p < 0.0001) and between PpIX concentration and microvascular density (r = 0.55, p < 0.0001), suggesting a significant, yet limited, association between blood-brain barrier breakdown and ALA-induced PpIX fluorescence. To our knowledge, this is the first time that Gd measurements by inductively coupled plasma mass spectrometry have been used in human gliomas.
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Azizian G, Riyahi-Alam N, Haghgoo S, Moghimi HR, Zohdiaghdam R, Rafiei B, Gorji E. Synthesis route and three different core-shell impacts on magnetic characterization of gadolinium oxide-based nanoparticles as new contrast agents for molecular magnetic resonance imaging. NANOSCALE RESEARCH LETTERS 2012; 7:549. [PMID: 23033866 PMCID: PMC3499173 DOI: 10.1186/1556-276x-7-549] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/10/2012] [Accepted: 09/22/2012] [Indexed: 06/01/2023]
Abstract
Despite its good resolution, magnetic resonance imaging intrinsically has low sensitivity. Recently, contrast agent nanoparticles have been used as sensitivity and contrast enhancer. The aim of this study was to investigate a new controlled synthesis method for gadolinium oxide-based nanoparticle preparation. For this purpose, diethyleneglycol coating of gadolinium oxide (Gd2O3-DEG) was performed using new supervised polyol route, and small particulate gadolinium oxide (SPGO) PEGylation was obtained with methoxy-polyethylene-glycol-silane (550 and 2,000 Da) coatings as SPGO-mPEG-silane550 and 2,000, respectively. Physicochemical characterization and magnetic properties of these three contrast agents in comparison with conventional Gd-DTPA were verified by dynamic light scattering transmission electron microscopy, Fourier transform infrared spectroscopy, inductively coupled plasma, X-ray diffraction, vibrating sample magnetometer, and the signal intensity and relaxivity measurements were performed using 1.5-T MRI scanner.As a result, the nanoparticle sizes of Gd2O3-DEG, SPGO-mPEG-silane550, and SPGO-mPEG-silane2000 could be reached to 5.9, 51.3, 194.2 nm, respectively. The image signal intensity and longitudinal (r1) and transverse relaxivity (r2) measurements in different concentrations (0.3 to approximately 2.5 mM), revealed the r2/r1 ratios of 1.13, 0.89, 33.34, and 33.72 for Gd-DTPA, Gd2O3-DEG, SPGO-mPEG-silane550, and SPGO-mPEG-silane2000, respectively.The achievement of new synthesis route of Gd2O3-DEG resulted in lower r2/r1 ratio for Gd2O3-DEG than Gd-DTPA and other previous synthesized methods by this and other groups. The smaller r2/r1 ratios of two PEGylated-SPGO contrast agents in our study in comparison with r2/r1 ratio of previous PEGylation (r2/r1 = 81.9 for mPEG-silane 6,000 MW) showed that these new three introduced contrast agents could potentially be proper contrast enhancers for cellular and molecular MR imaging.
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Affiliation(s)
- Gholamreza Azizian
- Medical Physics & Biomedical Engineering Department, School of Medicine, Tehran University of Medical Sciences (TUMS), Keshavaz blvd, 16 Azar St., Tehran 14145, Iran
| | - Nader Riyahi-Alam
- Medical Physics & Biomedical Engineering Department, School of Medicine, Tehran University of Medical Sciences (TUMS), Keshavaz blvd, 16 Azar St., Tehran 14145, Iran
| | - Soheila Haghgoo
- Pharmaceutical Department, Food & Drug Laboratory Research Center, Food & Drug Organization (FDO), Ministry of Health, Imam St., Valiasre Cross, Tehran, 1113615911, Iran
| | - Hamid Reza Moghimi
- Department of Pharmaceutics, School of Pharmacy, Shahid Beheshti University of Medical Sciences, Valiasre Ave., Niayesh Junction, Tehran, 141556153, Iran
| | - Reza Zohdiaghdam
- Medical Physics & Biomedical Engineering Department, School of Medicine, Tehran University of Medical Sciences (TUMS), Keshavaz blvd, 16 Azar St., Tehran 14145, Iran
| | - Behrooz Rafiei
- Medical Imaging Center, Imam Hospital Complex, School of Medicine, Tehran University of Medical Sciences (TUMS), Keshavaz Blvd., Tehran, 1419733141, Iran
| | - Ensieh Gorji
- Pharmaceutical Department, Food & Drug Laboratory Research Center, Food & Drug Organization (FDO), Ministry of Health, Imam St., Valiasre Cross, Tehran, 1113615911, Iran
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Brakmane G, Winslet M, Seifalian AM. Systematic review: the applications of nanotechnology in gastroenterology. Aliment Pharmacol Ther 2012; 36:213-21. [PMID: 22686286 DOI: 10.1111/j.1365-2036.2012.05179.x] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/22/2012] [Revised: 03/19/2012] [Accepted: 05/20/2012] [Indexed: 12/15/2022]
Abstract
BACKGROUND Over the past 30 years, nanotechnology has evolved dramatically. It has captured the interest of variety of fields from computing and electronics to biology and medicine. Recent discoveries have made invaluable changes to future prospects in nanomedicine; and introduced the concept of theranostics. This term offers a patient specific 'two in one' modality that comprises of diagnostic and therapeutic tools. Not only nanotechnology has shown great impact on improvements in drug delivery and imaging techniques, but also there have been several ground-breaking discoveries in regenerative medicine. AIM Gastroenterology invites multidisciplinary approach owing to high complexity of gastrointestinal (GI) system; it includes physicians, surgeons, radiologists, pharmacologists and many more. In this article, we concentrate on current developments in nano-gastroenterology. METHODS Literature search was performed using Web of Science and Pubmed search engines with terms--nanotechnology, nanomedicine and gastroenterology. Article search was concentrated on developments since 2005. RESULTS We have described original and innovative approaches in gastrointestinal drug delivery, inflammatory disease and cancer-target treatments. Here, we have reviewed advances in GI imaging using nanoparticles as fluorescent contrast, and their potential for site-specific targeting. This review has also depicted various approaches and novel discoveries in GI regenerative medicine using nanomaterials for scaffold designs and induced pluripotent stem cells as cell source. CONCLUSIONS Developments in nanotechnology have opened new range of possibilities to help our patients. This includes novel drug delivery vehicles, diagnostic tools for early and targeted disease detection and nanocomposite materials for tissue constructs to overcome cosmetic or physical disabilities.
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Affiliation(s)
- G Brakmane
- UCL Centre for Nanotechnology and Regenerative Medicine, Division of Surgery & Interventional Science, University College London, London, UK
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26
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Elemental imaging of MRI contrast agents: benchmarking of LA-ICP-MS to MRI. Anal Bioanal Chem 2012; 403:1641-9. [PMID: 22526651 DOI: 10.1007/s00216-012-5973-z] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2012] [Revised: 03/20/2012] [Accepted: 03/26/2012] [Indexed: 10/28/2022]
Abstract
Laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) has been used to map the spatial distribution of magnetic resonance imaging (MRI) contrast agents (Gd-based) in histological sections in order to explore synergies with in vivo MRI. Images from respective techniques are presented for two separate studies namely (1) convection enhanced delivery of a Gd nanocomplex (developmental therapeutic) into rat brain and (2) convection enhanced delivery, with co-infusion of Magnevist (commercial Gd contrast agent) and Carboplatin (chemotherapy drug), into pig brain. The LA technique was shown to be a powerful compliment to MRI not only in offering improved sensitivity, spatial resolution and signal quantitation but also in giving added value regarding the fate of administered agents (Gd and Pt agents). Furthermore simultaneous measurement of Fe enabled assignment of an anomalous contrast enhancement region in rat brain to haemorrhage at the infusion site.
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