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Akhmadeev BS, Nizameev IR, Kholin KV, Voloshina AD, Gerasimova TP, Gubaidullin AT, Kadirov MK, Ismaev IE, Brylev KA, Zairov RR, Mustafina AR. Molecular and Nano-Structural Optimization of Nanoparticulate Mn2+-Hexarhenium Cluster Complexes for Optimal Balance of High T1- and T2-Weighted Contrast Ability with Low Hemoagglutination and Cytotoxicity. Pharmaceutics 2022; 14:pharmaceutics14071508. [PMID: 35890403 PMCID: PMC9316779 DOI: 10.3390/pharmaceutics14071508] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2022] [Revised: 07/06/2022] [Accepted: 07/14/2022] [Indexed: 11/30/2022] Open
Abstract
The present work introduces rational design of nanoparticulate Mn(II)-based contrast agents through both variation of the μ3 (inner) ligands within a series of hexarhenium cluster complexes [{Re6(μ3-Q)8}(CN)6]4− (Re6Q8, Q = S2−, Se2− or Te2−) and interfacial decoration of the nanoparticles (NPs) K4−2xMnxRe6Q8 (x = 1.3 − 1.8) by a series of pluronics (F-68, P-123, F-127). The results highlight an impact of the ligand and pluronic for the optimal colloid behavior of the NPs allowing high colloid stability in ambient conditions and efficient phase separation under the centrifugation. It has been revealed that the K4−2xMnxRe6Se8 NPs and those decorated by F-127 are optimal from the viewpoint of magnetic relaxivities r1 and r2 (8.9 and 10.9 mM−1s−1, respectively, at 0.47 T) and low hemoagglutination activity. The insignificant leaching of Mn2+ ions from the NPs correlates with their insignificant effect on the cell viability of both M-HeLa and Chang Liver cell lines. The T1- and T2-weighted contrast ability of F-127–K4−2xMnxRe6Q8 NPs was demonstrated through the measurements of phantoms at whole body 1.5 T scanner.
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Affiliation(s)
- Bulat Salavatovich Akhmadeev
- A.E. Arbuzov Institute of Organic and Physical Chemistry, Kazan Scientific Center, Russian Academy of Sciences, 8 Arbuzov Str., 420088 Kazan, Russia; (I.R.N.); (K.V.K.); (A.D.V.); (T.P.G.); (A.T.G.); (M.K.K.); (R.R.Z.); (A.R.M.)
- Correspondence:
| | - Irek R. Nizameev
- A.E. Arbuzov Institute of Organic and Physical Chemistry, Kazan Scientific Center, Russian Academy of Sciences, 8 Arbuzov Str., 420088 Kazan, Russia; (I.R.N.); (K.V.K.); (A.D.V.); (T.P.G.); (A.T.G.); (M.K.K.); (R.R.Z.); (A.R.M.)
| | - Kirill V. Kholin
- A.E. Arbuzov Institute of Organic and Physical Chemistry, Kazan Scientific Center, Russian Academy of Sciences, 8 Arbuzov Str., 420088 Kazan, Russia; (I.R.N.); (K.V.K.); (A.D.V.); (T.P.G.); (A.T.G.); (M.K.K.); (R.R.Z.); (A.R.M.)
| | - Alexandra D. Voloshina
- A.E. Arbuzov Institute of Organic and Physical Chemistry, Kazan Scientific Center, Russian Academy of Sciences, 8 Arbuzov Str., 420088 Kazan, Russia; (I.R.N.); (K.V.K.); (A.D.V.); (T.P.G.); (A.T.G.); (M.K.K.); (R.R.Z.); (A.R.M.)
| | - Tatyana P. Gerasimova
- A.E. Arbuzov Institute of Organic and Physical Chemistry, Kazan Scientific Center, Russian Academy of Sciences, 8 Arbuzov Str., 420088 Kazan, Russia; (I.R.N.); (K.V.K.); (A.D.V.); (T.P.G.); (A.T.G.); (M.K.K.); (R.R.Z.); (A.R.M.)
| | - Aidar T. Gubaidullin
- A.E. Arbuzov Institute of Organic and Physical Chemistry, Kazan Scientific Center, Russian Academy of Sciences, 8 Arbuzov Str., 420088 Kazan, Russia; (I.R.N.); (K.V.K.); (A.D.V.); (T.P.G.); (A.T.G.); (M.K.K.); (R.R.Z.); (A.R.M.)
| | - Marsil K. Kadirov
- A.E. Arbuzov Institute of Organic and Physical Chemistry, Kazan Scientific Center, Russian Academy of Sciences, 8 Arbuzov Str., 420088 Kazan, Russia; (I.R.N.); (K.V.K.); (A.D.V.); (T.P.G.); (A.T.G.); (M.K.K.); (R.R.Z.); (A.R.M.)
| | - Ildus E. Ismaev
- Department of Electronic Instrumentation and Quality Management, A.N. Tupolev Kazan Research Technological University, 420015 Kazan, Russia;
| | - Konstantin A. Brylev
- Nikolaev Institute of Inorganic Chemistry, Siberian Branch of the Russian Academy of Sciences, 3 Acad. Lavrentiev Ave., 630090 Novosibirsk, Russia;
| | - Rustem R. Zairov
- A.E. Arbuzov Institute of Organic and Physical Chemistry, Kazan Scientific Center, Russian Academy of Sciences, 8 Arbuzov Str., 420088 Kazan, Russia; (I.R.N.); (K.V.K.); (A.D.V.); (T.P.G.); (A.T.G.); (M.K.K.); (R.R.Z.); (A.R.M.)
| | - Asiya R. Mustafina
- A.E. Arbuzov Institute of Organic and Physical Chemistry, Kazan Scientific Center, Russian Academy of Sciences, 8 Arbuzov Str., 420088 Kazan, Russia; (I.R.N.); (K.V.K.); (A.D.V.); (T.P.G.); (A.T.G.); (M.K.K.); (R.R.Z.); (A.R.M.)
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Wang L, Lai SM, Li CZ, Yu HP, Venkatesan P, Lai PS. D-Alpha-Tocopheryl Poly(ethylene Glycol 1000) Succinate-Coated Manganese-Zinc Ferrite Nanomaterials for a Dual-Mode Magnetic Resonance Imaging Contrast Agent and Hyperthermia Treatments. Pharmaceutics 2022; 14:pharmaceutics14051000. [PMID: 35631586 PMCID: PMC9144495 DOI: 10.3390/pharmaceutics14051000] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2022] [Revised: 04/18/2022] [Accepted: 04/29/2022] [Indexed: 01/26/2023] Open
Abstract
Manganese-zinc ferrite (MZF) is known as high-performance magnetic material and has been used in many fields and development. In the biomedical applications, the biocompatible MZF formulation attracted much attention. In this study, water-soluble amphiphilic vitamin E (TPGS, d-alpha-tocopheryl poly(ethylene glycol 1000) succinate) formulated MZF nanoparticles were synthesized to serve as both a magnetic resonance imaging (MRI) contrast agent and a vehicle for creating magnetically induced hyperthermia against cancer. The MZF nanoparticles were synthesized from a metallic acetylacetonate in an organic phase and further modified with TPGS using an emulsion and solvent-evaporation method. The resulting TPGS-modified MZF nanoparticles exhibited a dual-contrast ability, with a longitudinal relaxivity (35.22 s−1 mM Fe−1) and transverse relaxivity (237.94 s−1 mM Fe−1) that were both higher than Resovist®. Furthermore, the TPGS-assisted MZF formulation can be used for hyperthermia treatment to successfully suppress cell viability and tumor growth after applying an alternating current (AC) electromagnetic field at lower amplitude. Thus, the TPGS-assisted MZF theranostics can not only be applied as a potential contrast agent for MRI but also has potential for use in hyperthermia treatments.
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Affiliation(s)
- Lin Wang
- College of Chemistry & Pharmacy, Northwest A&F University, Xianyang 712100, China; (L.W.); (H.-P.Y.)
| | - Syu-Ming Lai
- Department of Chemistry, National Chung Hsing University, Taichung 402204, Taiwan; (S.-M.L.); (C.-Z.L.); (P.V.)
| | - Cun-Zhao Li
- Department of Chemistry, National Chung Hsing University, Taichung 402204, Taiwan; (S.-M.L.); (C.-Z.L.); (P.V.)
| | - Hsiu-Ping Yu
- College of Chemistry & Pharmacy, Northwest A&F University, Xianyang 712100, China; (L.W.); (H.-P.Y.)
| | - Parthiban Venkatesan
- Department of Chemistry, National Chung Hsing University, Taichung 402204, Taiwan; (S.-M.L.); (C.-Z.L.); (P.V.)
| | - Ping-Shan Lai
- Department of Chemistry, National Chung Hsing University, Taichung 402204, Taiwan; (S.-M.L.); (C.-Z.L.); (P.V.)
- Ph.D. Program in Tissue Engineering and Regenerative Medicine, National Chung Hsing University, Taichung 402204, Taiwan
- Correspondence:
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Ruggiero MR, Baroni S, Bitonto V, Ruiu R, Rapisarda S, Aime S, Geninatti Crich S. Intracellular Water Lifetime as a Tumor Biomarker to Monitor Doxorubicin Treatment via FFC-Relaxometry in a Breast Cancer Model. Front Oncol 2021; 11:778823. [PMID: 34926288 PMCID: PMC8678130 DOI: 10.3389/fonc.2021.778823] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2021] [Accepted: 11/18/2021] [Indexed: 01/29/2023] Open
Abstract
This study aims to explore whether the water exchange rate constants in tumor cells can act as a hallmark of pathology status and a reporter of therapeutic outcomes. It has been shown, using 4T1 cell cultures and murine allografts, that an early assessment of the therapeutic effect of doxorubicin can be detected through changes in the cellular water efflux rate constant kio. The latter has been estimated by analyzing the magnetization recovery curve in standard NMR T1 measurements when there is a marked difference in the proton relaxation rate constants (R1) between the intra- and the extra-cellular compartments. In cellular studies, T1 measurements were carried out on a relaxometer working at 0.5 T, and the required difference in R1 between the two compartments was achieved via the addition of a paramagnetic agent into the extracellular compartment. For in-vivo experiments, the large difference in the R1 values of the two-compartments was achieved when the T1 measurements were carried out at low magnetic field strengths. This task was accomplished using a Fast Field Cycling (FFC) relaxometer that was properly modified to host a mouse in its probe head. The decrease in kio upon the administration of doxorubicin is the result of the decreased activity of Na+/K+-ATPase, as shown in an independent test on the cellular uptake of Rb ions. The results reported herein suggest that kio can be considered a non-invasive, early and predictive biomarker for the identification of responsive patients immediately from the first doxorubicin treatment.
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Affiliation(s)
- Maria Rosaria Ruggiero
- Department of Molecular Biotechnology and Health Sciences, University of Turin, Turin, Italy
| | - Simona Baroni
- Department of Molecular Biotechnology and Health Sciences, University of Turin, Turin, Italy
| | - Valeria Bitonto
- Department of Molecular Biotechnology and Health Sciences, University of Turin, Turin, Italy
| | - Roberto Ruiu
- Department of Molecular Biotechnology and Health Sciences, University of Turin, Turin, Italy
| | - Smeralda Rapisarda
- Department of Molecular Biotechnology and Health Sciences, University of Turin, Turin, Italy
| | | | - Simonetta Geninatti Crich
- Department of Molecular Biotechnology and Health Sciences, University of Turin, Turin, Italy
- *Correspondence: Simonetta Geninatti Crich,
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Kim J, Lee JY, Park HY, Kim H, Kang JH, Kim HJ, Jeong W. Combination of peptides with biological, organic, and inorganic materials for synergistically enhanced diagnostics and therapeutics. Pept Sci (Hoboken) 2021. [DOI: 10.1002/pep2.24233] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Joo‐Young Kim
- Department of Biological Engineering Inha University Incheon Republic of Korea
- Department of Biological Sciences and Bioengineering Inha University Incheon Republic of Korea
| | - Jae Yun Lee
- Department of Biological Engineering Inha University Incheon Republic of Korea
| | - Ha Yeon Park
- Department of Biological Engineering Inha University Incheon Republic of Korea
| | - Hyunji Kim
- Department of Biological Engineering Inha University Incheon Republic of Korea
| | - Jeon Hyeong Kang
- Department of Biological Engineering Inha University Incheon Republic of Korea
| | - Hyun Jin Kim
- Department of Biological Engineering Inha University Incheon Republic of Korea
- Department of Biological Sciences and Bioengineering Inha University Incheon Republic of Korea
| | - Woo‐Jin Jeong
- Department of Biological Engineering Inha University Incheon Republic of Korea
- Department of Biological Sciences and Bioengineering Inha University Incheon Republic of Korea
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Validation of Recombinant Chicken Liver Bile Acid Binding Protein as a Tool for Cholic Acid Hosting. Biomolecules 2021; 11:biom11050645. [PMID: 33925706 PMCID: PMC8146743 DOI: 10.3390/biom11050645] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2021] [Revised: 04/24/2021] [Accepted: 04/26/2021] [Indexed: 02/02/2023] Open
Abstract
Bile acids (BAs) are hydroxylated steroids derived from cholesterol that act at the intestinal level to facilitate the absorption of several nutrients and also play a role as signaling molecules. In the liver of various vertebrates, the trafficking of BAs is mediated by bile acid-binding proteins (L-BABPs). The ability to host hydrophobic or amphipathic molecules makes BABPs suitable for the distribution of a variety of physiological and exogenous substances. Thus, BABPs have been proposed as drug carriers, and more recently, they have also been employed to develop innovative nanotechnology and biotechnology systems. Here, we report an efficient protocol for the production, purification, and crystallization of chicken liver BABP (cL-BABP). By means of target expression as His6-tag cL-BABP, we obtained a large amount of pure and homogeneous proteins through a simple purification procedure relying on affinity chromatography. The recombinant cL-BABP showed a raised propensity to crystallize, allowing us to obtain its structure at high resolution and, in turn, assess the structural conservation of the recombinant cL-BABP with respect to the liver-extracted protein. The results support the use of recombinant cL-BABP for the development of drug carriers, nanotechnologies, and innovative synthetic photoswitch systems.
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Baroni S, Stefania R, Broche LM, Senn N, Lurie DJ, Ross PJ, Aime S, Geninatti Crich S. A Novel Class of
1
H‐MRI Contrast Agents Based on the Relaxation Enhancement Induced on Water Protons by
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N‐Containing Imidazole Moieties. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202011513] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Simona Baroni
- Department of Molecular Biotechnology and Health Sciences University of Torino via Nizza 52 10126 Torino Italy
| | - Rachele Stefania
- Department of Molecular Biotechnology and Health Sciences University of Torino via Nizza 52 10126 Torino Italy
| | - Lionel M. Broche
- Aberdeen Biomedical Imaging Centre University of Aberdeen Foresterhill AB25 2ZD Aberdeen UK
| | - Nicholas Senn
- Aberdeen Biomedical Imaging Centre University of Aberdeen Foresterhill AB25 2ZD Aberdeen UK
| | - David J. Lurie
- Aberdeen Biomedical Imaging Centre University of Aberdeen Foresterhill AB25 2ZD Aberdeen UK
| | - P. James Ross
- Aberdeen Biomedical Imaging Centre University of Aberdeen Foresterhill AB25 2ZD Aberdeen UK
| | - Silvio Aime
- Department of Molecular Biotechnology and Health Sciences University of Torino via Nizza 52 10126 Torino Italy
- Istituto di Biostrutture e Bioimmagini (IBB) CNR via Nizza 52 10126 Torino Italy
| | - Simonetta Geninatti Crich
- Department of Molecular Biotechnology and Health Sciences University of Torino via Nizza 52 10126 Torino Italy
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Pedersen M, Irrera P, Dastrù W, Zöllner FG, Bennett KM, Beeman SC, Bretthorst GL, Garbow JR, Longo DL. Dynamic Contrast Enhancement (DCE) MRI-Derived Renal Perfusion and Filtration: Basic Concepts. Methods Mol Biol 2021; 2216:205-227. [PMID: 33476002 DOI: 10.1007/978-1-0716-0978-1_12] [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: 12/14/2022]
Abstract
Dynamic contrast-enhanced (DCE) MRI monitors the transit of contrast agents, typically gadolinium chelates, through the intrarenal regions, the renal cortex, the medulla, and the collecting system. In this way, DCE-MRI reveals the renal uptake and excretion of the contrast agent. An optimal DCE-MRI acquisition protocol involves finding a good compromise between whole-kidney coverage (i.e., 3D imaging), spatial and temporal resolution, and contrast resolution. By analyzing the enhancement of the renal tissues as a function of time, one can determine indirect measures of clinically important single-kidney parameters as the renal blood flow, glomerular filtration rate, and intrarenal blood volumes. Gadolinium-containing contrast agents may be nephrotoxic in patients suffering from severe renal dysfunction, but otherwise DCE-MRI is clearly useful for diagnosis of renal functions and for assessing treatment response and posttransplant rejection.Here we introduce the concept of renal DCE-MRI, describe the existing methods, and provide an overview of preclinical DCE-MRI applications to illustrate the utility of this technique to measure renal perfusion and glomerular filtration rate in animal models.This publication is based upon work from the COST Action PARENCHIMA, a community-driven network funded by the European Cooperation in Science and Technology (COST) program of the European Union, which aims to improve the reproducibility and standardization of renal MRI biomarkers. This introduction is complemented by two separate publications describing the experimental procedure and data analysis.
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Affiliation(s)
- Michael Pedersen
- Department of Clinical Medicine - Comparative Medicine Lab, Aarhus University, Aarhus, Denmark
| | - Pietro Irrera
- University of Campania "Luigi Vanvitelli", Napoli, Italy
| | - Walter Dastrù
- Department of Molecular Biotechnology and Health Sciences, University of Torino, Torino, Italy
| | - Frank G Zöllner
- Computer Assisted Clinical Medicine, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany
| | - Kevin M Bennett
- Washington University School of Medicine, St. Louis, MO, USA
| | - Scott C Beeman
- Washington University School of Medicine, St. Louis, MO, USA
| | | | - Joel R Garbow
- Washington University School of Medicine, St. Louis, MO, USA
| | - Dario Livio Longo
- Institute of Biostructures and Bioimaging (IBB), Italian National Research Council (CNR), Torino, Italy.
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Baroni S, Stefania R, Broche LM, Senn N, Lurie DJ, Ross PJ, Aime S, Geninatti Crich S. A Novel Class of
1
H‐MRI Contrast Agents Based on the Relaxation Enhancement Induced on Water Protons by
14
N‐Containing Imidazole Moieties. Angew Chem Int Ed Engl 2020; 60:4208-4214. [DOI: 10.1002/anie.202011513] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2020] [Revised: 10/14/2020] [Indexed: 01/12/2023]
Affiliation(s)
- Simona Baroni
- Department of Molecular Biotechnology and Health Sciences University of Torino via Nizza 52 10126 Torino Italy
| | - Rachele Stefania
- Department of Molecular Biotechnology and Health Sciences University of Torino via Nizza 52 10126 Torino Italy
| | - Lionel M. Broche
- Aberdeen Biomedical Imaging Centre University of Aberdeen Foresterhill AB25 2ZD Aberdeen UK
| | - Nicholas Senn
- Aberdeen Biomedical Imaging Centre University of Aberdeen Foresterhill AB25 2ZD Aberdeen UK
| | - David J. Lurie
- Aberdeen Biomedical Imaging Centre University of Aberdeen Foresterhill AB25 2ZD Aberdeen UK
| | - P. James Ross
- Aberdeen Biomedical Imaging Centre University of Aberdeen Foresterhill AB25 2ZD Aberdeen UK
| | - Silvio Aime
- Department of Molecular Biotechnology and Health Sciences University of Torino via Nizza 52 10126 Torino Italy
- Istituto di Biostrutture e Bioimmagini (IBB) CNR via Nizza 52 10126 Torino Italy
| | - Simonetta Geninatti Crich
- Department of Molecular Biotechnology and Health Sciences University of Torino via Nizza 52 10126 Torino Italy
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Baranyai Z, Delli Castelli D, Platas-Iglesias C, Esteban-Gomez D, Bényei A, Tei L, Botta M. Combined NMR, DFT and X-ray studies highlight structural and hydration changes of [Ln(AAZTA)]− complexes across the series. Inorg Chem Front 2020. [DOI: 10.1039/c9qi01442j] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
1H NMR, CEST, DFT and X-ray studies reveal that [Ln(AAZTA)]− chelates experience a transition across the Ln(iii) series from fast-exchanging, bisaqua 9-coordinate species, to slow-exchanging monoaqua 8-coordinate structures.
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Affiliation(s)
- Zsolt Baranyai
- Bracco Imaging SpA
- Bracco Research Center
- Colleretto Giacosa (TO)
- Italy
| | - Daniela Delli Castelli
- Department of Molecular Biotechnology and Health Science
- University of Turin
- 10126 Torino
- Italy
| | - Carlos Platas-Iglesias
- Centro de Investigacións Científicas Avanzadas (CICA) and Departamento de Química
- Facultade de Ciencias
- Universidade da Coruña
- 15071 A Coruña
- Spain
| | - David Esteban-Gomez
- Centro de Investigacións Científicas Avanzadas (CICA) and Departamento de Química
- Facultade de Ciencias
- Universidade da Coruña
- 15071 A Coruña
- Spain
| | - Attila Bényei
- Department of Physical Chemistry
- Faculty of Science and Technology
- University of Debrecen
- Hungary
| | - Lorenzo Tei
- Department of Science and Technological Innovation
- Università del Piemonte Orientale
- Alessandria
- Italy
| | - Mauro Botta
- Department of Science and Technological Innovation
- Università del Piemonte Orientale
- Alessandria
- Italy
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Abstract
The search for high relaxivities and increased specificity continues to be central to the development of paramagnetic contrast agents for magnetic resonance imaging (MRI). Ferritin, due to its unique surface properties, architecture, and biocompatibility, has emerged as a natural nanocage that can potentially help to reach both these goals. This review aims to highlight recent advances in the use of ferritin as a nanoplatform for the delivery of metal-based MRI contrast agents (containing Gd3+, Mn2+, or Fe2O3) alone or in combination with active molecules used for therapeutic purposes. The collected results unequivocally show that the use of ferritin for contrast agent delivery leads to more accurate imaging of cancer cells and a significantly improved targeted therapy.
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Zhan Y, Xue R, Zhang M, Wan C, Li X, Pei F, Sun C, Liu L. Synthesis and Evaluation of a Biocompatible Macromolecular Gadolinium Compound as a Liver-Specific Contrast Agent for MRI. Aust J Chem 2017. [DOI: 10.1071/ch16347] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
A new macromolecular biocompatible gadolinium chelate complex (PAI-N2-DOTA-Gd) as a liver-specific magnetic resonance imaging (MRI) contrast agent was synthesised and evaluated. An aspartic acid–isoleucine copolymer was chemically linked with Gd-DOTA via ethylenediamine to give PAI-N2-DOTA-Gd. In vitro, the T1-relaxivity of PAI-N2-DOTA-Gd (14.38 mmol–1⋅L⋅s–1, 0.5 T) was much higher than that of the clinically used Gd-DOTA (4.96 mmol–1⋅L⋅s–1, 0.5 T), with obvious imaging signal enhancement. In the imaging experiments in vivo, PAI-N2-DOTA-Gd exhibited good liver selectivity, and had a greater intensity enhancement (68.8 ± 5.6 %) and a longer imaging window time (30–70 min), compared to Gd-DOTA (21.1 ± 5.3 %, 10–30 min). Furthermore, the in vivo histological studies of PAI-N2-DOTA-Gd showed a low acute toxicity and desirable biocompatibility. The results of this study indicate that PAI-N2-DOTA-Gd is a feasible liver-specific contrast agent for MRI.
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Wu Z, Zha Z, Choi SR, Plössl K, Zhu L, Kung HF. New (68)Ga-PhenA bisphosphonates as potential bone imaging agents. Nucl Med Biol 2016; 43:360-71. [PMID: 27260777 DOI: 10.1016/j.nucmedbio.2016.03.002] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2016] [Revised: 02/19/2016] [Accepted: 03/07/2016] [Indexed: 12/11/2022]
Abstract
INTRODUCTION In vivo positron emission tomography (PET) imaging of the bone using [(68)Ga]bisphosphonates may be a valuable tool for cancer diagnosis and monitoring therapeutic treatment. We have developed new [(68)Ga]bisphosphonates based on the chelating group, AAZTA (6-[bis(hydroxycarbonyl-methyl)amino]-1,4-bis(hydroxycarbonyl methyl)-6-methylperhydro-1,4-diazepine). METHOD Phenoxy derivative of AAZTA (2,2'-(6-(bis(carboxymethyl)amino)-6-((4-(2-carboxyethyl)phenoxy)methyl)-1,4-diazepane-1,4-diyl)diacetic acid), PhenA, 2, containing a bisphosphonate group (PhenA-BPAMD, 3, and PhenA-HBP, 4) was prepared. Labeling of these chelating agents with (68)Ga was evaluated. RESULTS The ligands reacted rapidly in a sodium acetate buffer with [(68)Ga]GaCl3 eluted from a commercially available (68)Ge/(68)Ga generator (pH4, >95% labeling at room temperature in 5min) to form [(68)Ga]PhenA-BPAMD, 3, and [(68)Ga]PhenA-HBP, 4. The improved labeling condition negates the need for further purification. The (68)Ga bisphosphonate biodistribution and autoradiography of bone sections in normal mice after an iv injection showed excellent bone uptake. CONCLUSION New (68)Ga labeled bisphosphonates may be useful as in vivo bone imaging agents in conjunction with positron emission tomography (PET).
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Affiliation(s)
- Zehui Wu
- Five Eleven Pharma Inc., Philadelphia, PA 19104, USA
| | - Zhihao Zha
- Five Eleven Pharma Inc., Philadelphia, PA 19104, USA
| | - Seok Rye Choi
- Five Eleven Pharma Inc., Philadelphia, PA 19104, USA
| | - Karl Plössl
- Five Eleven Pharma Inc., Philadelphia, PA 19104, USA
| | - Lin Zhu
- Five Eleven Pharma Inc., Philadelphia, PA 19104, USA
| | - Hank F Kung
- Five Eleven Pharma Inc., Philadelphia, PA 19104, USA; Department of Radiology, University of Pennsylvania, Philadelphia, PA 19104, USA.
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Delli Castelli D, Ferrauto G, Di Gregorio E, Terreno E, Aime S. Sensitive MRI detection of internalized T1 contrast agents using magnetization transfer contrast. NMR IN BIOMEDICINE 2015; 28:1663-1670. [PMID: 26474109 DOI: 10.1002/nbm.3423] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/29/2015] [Revised: 09/03/2015] [Accepted: 09/06/2015] [Indexed: 06/05/2023]
Abstract
This work addresses the possibility of using Magnetization Transfer Contrast (MTC) for an improved MRI detection of T1 relaxation agents. The need to improve the detection threshold of MRI agents is particularly stringent when the contrast agents failed to accumulate to the proper extent in targeting procedures. The herein reported approach is based on the T1 dependence of MT contrast. It has been assessed that MT contrast can allow the detection of a Gd-containing agent at a lower detection threshold than the one accessible by acquiring T1W images. Measurements have been carried out either in TS/A cells or in vivo in a syngeneic murine breast cancer model. The reported data showed that in cellular experiments the MTC method displays a better sensitivity with respect to the common T1W experiments. In particular, the reached detection threshold allowed the visualization of samples containing only 2% of Gd-labeled cells diluted in unlabeled cells. In vivo experiments displayed a more diversified scheme. In particular, the tumor region showed two distinct behaviors accordingly with the localization of the imaging probe. The probe located in the tumor core could be detected to the same extent either by T1w or MTC contrast. Conversely, the agent located in the tumor rim was detected with a larger sensitivity by the MTC method herein described.
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Affiliation(s)
- Daniela Delli Castelli
- Molecular & Preclinical Imaging Centers, Department of Molecular Biotechnology and Health Sciences, University of Torino, Torino, Italy
| | - Giuseppe Ferrauto
- Molecular & Preclinical Imaging Centers, Department of Molecular Biotechnology and Health Sciences, University of Torino, Torino, Italy
| | - Enza Di Gregorio
- Molecular & Preclinical Imaging Centers, Department of Molecular Biotechnology and Health Sciences, University of Torino, Torino, Italy
| | - Enzo Terreno
- Molecular & Preclinical Imaging Centers, Department of Molecular Biotechnology and Health Sciences, University of Torino, Torino, Italy
- IBB-CNR- UOS, University of Torino, Torino, Italy
| | - Silvio Aime
- Molecular & Preclinical Imaging Centers, Department of Molecular Biotechnology and Health Sciences, University of Torino, Torino, Italy
- IBB-CNR- UOS, University of Torino, Torino, Italy
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Wu R, Longo DL, Aime S, Sun PZ. Quantitative description of radiofrequency (RF) power-based ratiometric chemical exchange saturation transfer (CEST) pH imaging. NMR IN BIOMEDICINE 2015; 28:555-65. [PMID: 25807919 PMCID: PMC4423622 DOI: 10.1002/nbm.3284] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/17/2014] [Revised: 01/07/2015] [Accepted: 02/10/2015] [Indexed: 02/05/2023]
Abstract
Chemical exchange saturation transfer (CEST) MRI holds great promise for the imaging of pH. However, routine CEST measurement varies not only with the pH-dependent chemical exchange rate, but also with CEST agent concentration, providing pH-weighted information. Conventional ratiometric CEST imaging normalizes the confounding concentration factor by analyzing the relative CEST effect from different exchangeable groups, requiring CEST agents with multiple chemically distinguishable labile proton sites. Recently, a radiofrequency (RF) power-based ratiometric CEST MRI approach has been developed for concentration-independent pH MRI using CEST agents with a single exchangeable group. To facilitate quantification and optimization of the new ratiometric analysis, we quantified the RF power-based ratiometric CEST ratio (rCESTR) and derived its signal-to-noise and contrast-to-noise ratios. Using creatine as a representative CEST agent containing a single exchangeable site, our study demonstrated that optimized RF power-based ratiometric analysis provides good pH sensitivity. We showed that rCESTR follows a base-catalyzed exchange relationship with pH independent of creatine concentration. The pH accuracy of RF power-based ratiometric MRI was within 0.15-0.20 pH units. Furthermore, the absolute exchange rate can be obtained from the proposed ratiometric analysis. To summarize, RF power-based ratiometric CEST analysis provides concentration-independent pH-sensitive imaging and complements conventional multiple labile proton group-based ratiometric CEST analysis.
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Affiliation(s)
- Renhua Wu
- Department of Radiology, 2Affiliated Hospital of Shantou University Medical College, Shantou, China
| | - Dario Livio Longo
- Institute of Biostructure and Bioimaging (CNR) c/o Molecular Biotechnology Center, University of Torino, Torino, Italy
| | - Silvio Aime
- Department of Molecular Biotechnology and Health Sciences, Molecular Imaging Center, University of Torino, Torino, Italy
| | - Phillip Zhe Sun
- Athinoula A. Martinos Center for Biomedical Imaging, MGH and Harvard Medical School, Boston, MA, USA
- Corresponding Author: Dr. Phillip Zhe Sun, Ph.D., Biomarker and Metabolism Imaging Lab, Athinoula A. Martinos Center for Biomedical Imaging, Department of Radiology, MGH and Harvard Medical School, Rm 2301, 149 13th Street, Charlestown, MA 02129, Phone: 617-726-4060, Fax: 617-726-7422,
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Abstract
This perspective outlines strategies towards the development of MR imaging probes that our lab has explored over the last 15 years. Namely, we discuss methods to enhance the signal generating capacity of MR probes and how to achieve tissue specificity through protein targeting or probe activation within the tissue microenvironment.
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Affiliation(s)
- Eszter Boros
- Athinoula A. Martinos Center for Biomedical Imaging, Department of Radiology Massachusetts General Hospital and Harvard Medical School, Charlestown, MA 02129, USA
| | - Eric M Gale
- Athinoula A. Martinos Center for Biomedical Imaging, Department of Radiology Massachusetts General Hospital and Harvard Medical School, Charlestown, MA 02129, USA
| | - Peter Caravan
- Athinoula A. Martinos Center for Biomedical Imaging, Department of Radiology Massachusetts General Hospital and Harvard Medical School, Charlestown, MA 02129, USA
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16
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Park JA, Lee YJ, Ko IO, Kim TJ, Chang Y, Lim SM, Kim KM, Kim JY. Improved tumor-targeting MRI contrast agents: Gd(DOTA) conjugates of a cycloalkane-based RGD peptide. Biochem Biophys Res Commun 2014; 455:246-50. [PMID: 25449282 DOI: 10.1016/j.bbrc.2014.10.155] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2014] [Accepted: 10/31/2014] [Indexed: 11/16/2022]
Abstract
Two new MRI contrast agents, Gd-DOTA-c(RGD-ACP-K) (1) and Gd-DOTA-c(RGD-ACH-K) (2), which were designed by incorporating aminocyclopentane (ACP)- or aminocyclohexane (ACH)-carboxylic acid into Gd-DOTA (gadolinium-tetraazacyclo dodecanetetraacetic acid) and cyclic RGDK peptides, were synthesized and evaluated for tumor-targeting ability in vitro and in vivo. Binding affinity studies showed that both 1 and 2 exhibited higher affinity for integrin receptors than cyclic RGDyK peptides, which were used as a reference. These complexes showed high relaxivity and good stability in human serum and have the potential to improve target-specific signal enhancement in vivo MR images.
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Affiliation(s)
- Ji-Ae Park
- Molecular Imaging Research Center, Korea Institute of Radiological & Medical Sciences, Seoul, Republic of Korea.
| | - Yong Jin Lee
- Molecular Imaging Research Center, Korea Institute of Radiological & Medical Sciences, Seoul, Republic of Korea
| | - In Ok Ko
- Molecular Imaging Research Center, Korea Institute of Radiological & Medical Sciences, Seoul, Republic of Korea
| | - Tae-Jeong Kim
- Institute of Biomedical Engineering, Kyungpook National University, Daegu, Republic of Korea
| | - Yongmin Chang
- Institute of Biomedical Engineering, Kyungpook National University, Daegu, Republic of Korea
| | - Sang Moo Lim
- Department of Nuclear Medicine, Korea Institute of Radiological & Medical Sciences, Seoul, Republic of Korea
| | - Kyeong Min Kim
- Molecular Imaging Research Center, Korea Institute of Radiological & Medical Sciences, Seoul, Republic of Korea
| | - Jung Young Kim
- Molecular Imaging Research Center, Korea Institute of Radiological & Medical Sciences, Seoul, Republic of Korea.
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17
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Zeng C, Shi X, Wu B, Zhang D, Zhang W. Colloids containing gadolinium-capped gold nanoparticles as high relaxivity dual-modality contrast agents for CT and MRI. Colloids Surf B Biointerfaces 2014; 123:130-5. [DOI: 10.1016/j.colsurfb.2014.09.007] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2014] [Revised: 08/29/2014] [Accepted: 09/03/2014] [Indexed: 11/17/2022]
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18
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Mariano RN, Alberti D, Cutrin JC, Geninatti Crich S, Aime S. Design of PLGA Based Nanoparticles for Imaging Guided Applications. Mol Pharm 2014; 11:4100-6. [DOI: 10.1021/mp5002747] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Rodolfo Nicolás Mariano
- Department
of Molecular Biotechnology and Health Sciences, University of Torino, via Nizza 52, Torino, Italy
| | - Diego Alberti
- Department
of Molecular Biotechnology and Health Sciences, University of Torino, via Nizza 52, Torino, Italy
| | - Juan Carlos Cutrin
- Department
of Molecular Biotechnology and Health Sciences, University of Torino, via Nizza 52, Torino, Italy
- ININCA-CONICET, Marcelo
T. de Alvear 2270, Buenos Aires, Argentina
| | - Simonetta Geninatti Crich
- Department
of Molecular Biotechnology and Health Sciences, University of Torino, via Nizza 52, Torino, Italy
| | - Silvio Aime
- Department
of Molecular Biotechnology and Health Sciences, University of Torino, via Nizza 52, Torino, Italy
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19
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Sun PZ, Longo DL, Hu W, Xiao G, Wu R. Quantification of iopamidol multi-site chemical exchange properties for ratiometric chemical exchange saturation transfer (CEST) imaging of pH. Phys Med Biol 2014; 59:4493-504. [PMID: 25054859 DOI: 10.1088/0031-9155/59/16/4493] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
pH-sensitive chemical exchange saturation transfer (CEST) MRI holds great promise for in vivo applications. However, the CEST effect depends on not only exchange rate and hence pH, but also on the contrast agent concentration, which must be determined independently for pH quantification. Ratiometric CEST MRI normalizes the concentration effect by comparing CEST measurements of multiple labile protons to simplify pH determination. Iopamidol, a commonly used x-ray contrast agent, has been explored as a ratiometric CEST agent for imaging pH. However, iopamidol CEST properties have not been solved, determination of which is important for optimization and quantification of iopamidol pH imaging. Our study numerically solved iopamidol multi-site pH-dependent chemical exchange properties. We found that iopamidol CEST MRI is suitable for measuring pH between 6 and 7.5 despite that T1 and T2 measurements varied substantially with pH and concentration. The pH MRI precision decreased with pH and concentration. The standard deviation of pH determined from MRI was 0.2 and 0.4 pH unit for 40 and 20 mM iopamidol solution of pH 6, and it improved to be less than 0.1 unit for pH above 7. Moreover, we determined base-catalyzed chemical exchange for 2-hydrooxypropanamido (ksw = 1.2*10(pH-4.1)) and amide (ksw = 1.2*10(pH-4.6)) protons that are statistically different from each other (P < 0.01, ANCOVA), understanding of which should help guide in vivo translation of iopamidol pH imaging.
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Affiliation(s)
- Phillip Zhe Sun
- Department of Radiology, Athinoula A. Martinos Center for Biomedical Imaging, Massachusetts General Hospital and Harvard Medical School, Charlestown, MA, USA
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20
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21
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Alberti D, van't Erve M, Stefania R, Ruggiero MR, Tapparo M, Geninatti Crich S, Aime S. A Quantitative Relaxometric Version of the ELISA Test for the Measurement of Cell Surface Biomarkers. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201310959] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
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22
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Alberti D, van't Erve M, Stefania R, Ruggiero MR, Tapparo M, Geninatti Crich S, Aime S. A Quantitative Relaxometric Version of the ELISA Test for the Measurement of Cell Surface Biomarkers. Angew Chem Int Ed Engl 2014; 53:3488-91. [DOI: 10.1002/anie.201310959] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2013] [Indexed: 01/17/2023]
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23
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Longo DL, Di Gregorio E, Abategiovanni R, Ceccon A, Assfalg M, Molinari H, Aime S. Chemical exchange saturation transfer (CEST): an efficient tool for detecting molecular information on proteins' behaviour. Analyst 2014; 139:2687-90. [DOI: 10.1039/c4an00346b] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In this communication, we report that protein remodeling processes, such as aggregation, unfolding and interaction with lipid membranes, may be investigated by magnetic resonance imaging (MRI) through the CEST mechanism.
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Affiliation(s)
- Dario Livio Longo
- Department of Molecular Biotechnologies and Health Sciences
- University of Torino
- 10126 Torino, Italy
- Institute for Biostructures and Bioimages (CNR)
- c/o Molecular Biotechnology Center
| | - Enza Di Gregorio
- Department of Molecular Biotechnologies and Health Sciences
- University of Torino
- 10126 Torino, Italy
| | - Riccardo Abategiovanni
- Department of Molecular Biotechnologies and Health Sciences
- University of Torino
- 10126 Torino, Italy
| | - Alberto Ceccon
- Department of Biotechnology
- University of Verona
- 37134 Verona, Italy
| | - Michael Assfalg
- Department of Biotechnology
- University of Verona
- 37134 Verona, Italy
| | | | - Silvio Aime
- Department of Molecular Biotechnologies and Health Sciences
- University of Torino
- 10126 Torino, Italy
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24
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Pagano K, Tomaselli S, Zanzoni S, Assfalg M, Molinari H, Ragona L. Bile acid binding protein: a versatile host of small hydrophobic ligands for applications in the fields of MRI contrast agents and bio-nanomaterials. Comput Struct Biotechnol J 2013; 6:e201303021. [PMID: 24688729 PMCID: PMC3962148 DOI: 10.5936/csbj.201303021] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2013] [Revised: 11/19/2013] [Accepted: 11/22/2013] [Indexed: 01/02/2023] Open
Abstract
During the last decade a growing amount of evidence has been obtained, supporting the role of the beta-clamshell family of intracellular lipid binding proteins (iLBPs) not only in the translocation of lipophilic molecules but also in lipid mediated signalling and metabolism. Given the central role of lipids in physiological processes, it is essential to have detailed knowledge on their interactions with cognate binding proteins. Structural and dynamical aspects of the binding mechanisms have been widely investigated by means of NMR spectroscopy, docking and molecular dynamics simulation approaches. iLBPs share a stable beta-barrel fold, delimiting an internal cavity capable of promiscuous ligand binding and display significant flexibility at the putative ligand portal. These features make this class of proteins good scaffolds to build host-guest systems for applications in nanomedicine and nanomaterials.
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Affiliation(s)
- Katiuscia Pagano
- Istituto per lo Studio delle Macromolecole, CNR, via Bassini 15, 20133 Milano, Italy
| | - Simona Tomaselli
- Istituto per lo Studio delle Macromolecole, CNR, via Bassini 15, 20133 Milano, Italy
| | - Serena Zanzoni
- Dipartimento di Biotecnologie, Università degli Studi di Verona, Strada Le Grazie 15, 37134, Verona, Italy
| | - Michael Assfalg
- Dipartimento di Biotecnologie, Università degli Studi di Verona, Strada Le Grazie 15, 37134, Verona, Italy
| | - Henriette Molinari
- Istituto per lo Studio delle Macromolecole, CNR, via Bassini 15, 20133 Milano, Italy
| | - Laura Ragona
- Istituto per lo Studio delle Macromolecole, CNR, via Bassini 15, 20133 Milano, Italy
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25
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de Almeida A, Oliveira BL, Correia JD, Soveral G, Casini A. Emerging protein targets for metal-based pharmaceutical agents: An update. Coord Chem Rev 2013. [DOI: 10.1016/j.ccr.2013.01.031] [Citation(s) in RCA: 90] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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26
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Pais A, Biton IE, Margalit R, Degani H. Characterization of estrogen-receptor-targeted contrast agents in solution, breast cancer cells, and tumors in vivo. Magn Reson Med 2013; 70:193-206. [PMID: 22887470 PMCID: PMC4547469 DOI: 10.1002/mrm.24442] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2012] [Revised: 06/10/2012] [Accepted: 07/05/2012] [Indexed: 12/27/2022]
Abstract
The estrogen receptor (ER) is a major prognostic biomarker of breast cancer, currently determined in surgical specimens by immunohistochemistry. Two new ER-targeted probes, pyridine-tetra-acetate-Gd chelate (PTA-Gd) conjugated either to 17β-estradiol (EPTA-Gd) or to tamoxifen (TPTA-Gd), were explored as contrast agents for molecular imaging of ER. In solution, both probes exhibited a micromolar ER binding affinity, fast water exchange rate (∼10(7) s(-1)), and water proton-relaxivity of 4.7-6.8 mM(-1) s(-1). In human breast cancer cells, both probes acted as estrogen agonists and enhanced the water protons T1 relaxation rate and relaxivity in ER-positive as compared to ER-negative cells, with EPTA-Gd showing a higher ER-specific relaxivity than TPTA-Gd. In studies of breast cancer tumors in vivo, EPTA-Gd induced the highest enhancement in ER-positive tumors as compared to ER-negative tumors and muscle tissue, enabling in vivo detection of ER. TPTA-Gd demonstrated the highest enhancement in muscle tissue indicating nonspecific interaction of this agent with muscle components. The extracellular contrast agents, PTA-Gd and GdDTPA, showed no difference in the perfusion capacity of ER-positive and -negative tumors confirming the specific interaction of EPTA-Gd with ER. These findings lay a basis for the molecular imaging of the ER using EPTA-Gd as a template for further developments.
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Affiliation(s)
- Adi Pais
- Department of Biological Regulation, Weizmann Institute of
Science, Rehovot, Israel
| | - Inbal Eti Biton
- Department of Veterinary Resources, Weizmann Institute of
Science, Rehovot, Israel
| | - Raanan Margalit
- Department of Biological Regulation, Weizmann Institute of
Science, Rehovot, Israel
| | - Hadassa Degani
- Department of Biological Regulation, Weizmann Institute of
Science, Rehovot, Israel
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Lin CY, Yadav NN, Ratnakar J, Sherry AD, van Zijl PCM. In vivo imaging of paraCEST agents using frequency labeled exchange transfer MRI. Magn Reson Med 2013; 71:286-93. [PMID: 23468384 DOI: 10.1002/mrm.24603] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2012] [Accepted: 11/28/2012] [Indexed: 12/27/2022]
Abstract
PURPOSE A main obstacle to in vivo applications of paramagnetic chemical exchange saturation transfer (paraCEST) is interference from endogenous tissue magnetization transfer contrast (MTC). The suitability of excitation-based frequency labeled exchange transfer (FLEX) to separate out such MTC effects in vivo was tested. METHODS The FLEX sequence measures modulation of the water signal based on the chemical shift evolution of solute proton magnetization as a function of evolution time. Time-domain analysis of this water signal allows identification of different solute components and provides a mechanism to separate out the rapidly decaying MTC components with short effective transverse relaxation time ( T2*) values. RESULTS FLEX imaging of paraCEST agents was possible in vitro in phantoms and in vivo in mouse kidneys and bladder. The results demonstrated that FLEX is capable of separating out the MTC signal from tissues in vivo while providing a quantitative exchange rate for the rapidly exchanging paraCEST water protons by fitting the FLEX time-domain signal to FLEX theory. CONCLUSIONS The first in vivo FLEX images of a paraCEST agent were acquired, which allowed separation of the tissue MTC components. These results show that FLEX imaging has potential for imaging the distribution of functional paraCEST agents in biological tissues.
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Affiliation(s)
- Chien-Yuan Lin
- Advanced Imaging Research Center, University of Texas Southwestern Medical Center, Dallas, Texas, USA; F.M. Kirby Research Center for Functional Brain Imaging, Kennedy Krieger Research Institute, Baltimore, Maryland, USA
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28
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Boros E, Caravan P. Structure-relaxivity relationships of serum albumin targeted MRI probes based on a single amino acid Gd complex. J Med Chem 2013; 56:1782-6. [PMID: 23391162 PMCID: PMC3656968 DOI: 10.1021/jm4000177] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
The Gd(III) complex of DO3A-N-α-aminopropionate, Gd(DOTAla), was used to generate a small library of putative MRI probes targeted to human serum albumin (HSA). Ten compounds were synthesized via multistep organic synthesis, and the corresponding Gd complexes were investigated for their affinity to HSA, lipophilicity, and relaxivity in the absence and presence of HSA. Negative charge and moderate lipophilicity correlate with increased HSA affinity and relaxivity.
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Affiliation(s)
- Eszter Boros
- The Athinoula A. Martinos Center for Biomedical Imaging, Department of Radiology, Massachusetts General Hospital, Harvard Medical School, 149 Thirteenth Street, Suite 2301, Charlestown, MA 02129
| | - Peter Caravan
- The Athinoula A. Martinos Center for Biomedical Imaging, Department of Radiology, Massachusetts General Hospital, Harvard Medical School, 149 Thirteenth Street, Suite 2301, Charlestown, MA 02129
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29
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Milne M, Gobbo P, McVicar N, Bartha R, Workentin MS, Hudson RHE. Water-soluble gold nanoparticles (AuNP) functionalized with a gadolinium(iii) chelate via Michael addition for use as a MRI contrast agent. J Mater Chem B 2013; 1:5628-5635. [DOI: 10.1039/c3tb20699h] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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30
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van Veggel FCJM, Dong C, Johnson NJJ, Pichaandi J. Ln(3+)-doped nanoparticles for upconversion and magnetic resonance imaging: some critical notes on recent progress and some aspects to be considered. NANOSCALE 2012; 4:7309-7321. [PMID: 23086529 DOI: 10.1039/c2nr32124f] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
In this feature article we will critically discuss the synthesis and characterisation aspects of Ln(3+)-doped nanoparticles (NPs) that show upconversion, upon 980 nm excitation. Upconversion is a non-linear process that converts two or more low-energy photons, often near-infrared photons, into one of higher energy, e.g. blue and 800 nm from Tm(3+) and green and red from Er(3+) or Ho(3+). Nearly all researchers use the absorption of 980 nm light by Yb(3+) as the sensitiser for the co-doped emissive Ln(3+) ions. The focus will be on LnF(3) and MLnF(4) (M = alkali metal) as the host matrix, because most progress has been made with these. In particular we will argue that a detailed understanding of how the dopant ions and the host Ln(3+) ions are distributed (in the core) and how (doped) shell growth occurs is not well understood. Moreover, their use as optical and magnetic resonance imaging contrast agents will be discussed. We will argue that deep-tissue imaging beyond 600 μm with retention of optical resolution, i.e. to see fine structure such as blood capillaries in brain tissues, has not yet been achieved. Three key parameters have been identified as impediments: (i) the low absorption efficiency of the Yb(3+) sensitiser, (ii) the low quantum yield of upconversion, and (iii) the long-lived excited states. On the other hand, there are very encouraging results that suggest that these nanoparticles could be developed into very potent magnetic resonance imaging (MRI) contrast agents.
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Affiliation(s)
- Frank C J M van Veggel
- University of Victoria, Department of Chemistry, PO Box 3065, Victoria, British Columbia, Canada V8W 3V6.
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31
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Geninatti Crich S, Alberti D, Orio L, Stefania R, Longo D, Aime S. Lipid-Based Nanoparticles in Cardiovascular Molecular Imaging. CURRENT CARDIOVASCULAR IMAGING REPORTS 2012. [DOI: 10.1007/s12410-012-9180-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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32
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Chan KWY, McMahon MT, Kato Y, Liu G, Bulte JWM, Bhujwalla ZM, Artemov D, van Zijl PCM. Natural D-glucose as a biodegradable MRI contrast agent for detecting cancer. Magn Reson Med 2012; 68:1764-73. [PMID: 23074027 DOI: 10.1002/mrm.24520] [Citation(s) in RCA: 272] [Impact Index Per Article: 22.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2012] [Revised: 09/13/2012] [Accepted: 09/17/2012] [Indexed: 12/13/2022]
Abstract
PURPOSE Modern imaging technologies such as CT, PET, SPECT, and MRI employ contrast agents to visualize the tumor microenvironment, providing information on malignancy and response to treatment. Currently, all clinical imaging agents require chemical labeling, i.e. with iodine (CT), radioisotopes (PET/SPECT), or paramagnetic metals (MRI). The goal was to explore the possibility of using simple D-glucose as an infusable biodegradable MRI agent for cancer detection. METHODS D-glucose signals were detected using chemical exchange saturation transfer (glucoCEST) MRI of its hydroxyl groups. Feasibility was established in phantoms as well as in vivo using two human breast cancer cell lines, MDA-MB-231 and MCF-7, implanted orthotopically in nude mice. PET and contrast-enhanced MRI were also acquired. RESULTS Both tumor types exhibited significant glucoCEST signal enhancement during systemic sugar infusion (mild hyperglycemia), allowing their noninvasive visualization. GlucoCEST showed differences between types, while PET and CE-MRI did not. Data are discussed in terms of signal contributions from the increased vascular volume in tumors and especially from the acidic extracellular extravascular space (EES), where glucoCEST signal is expected to be enhanced due to a slow down of hydroxyl proton exchange. CONCLUSIONS This observation opens up the possibility for using simple non-toxic sugars as contrast agents for cancer detection with MRI by employing hydroxyl protons as a natural label.
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Affiliation(s)
- Kannie W Y Chan
- Russell H. Morgan Department of Radiology and Radiological Science, Division of MR Research, The Johns Hopkins University School of Medicine, Baltimore, Maryland 21205, USA
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33
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Longo DL, Busato A, Lanzardo S, Antico F, Aime S. Imaging the pH evolution of an acute kidney injury model by means of iopamidol, a MRI-CEST pH-responsive contrast agent. Magn Reson Med 2012; 70:859-64. [DOI: 10.1002/mrm.24513] [Citation(s) in RCA: 101] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2012] [Revised: 08/10/2012] [Accepted: 09/10/2012] [Indexed: 12/28/2022]
Affiliation(s)
- Dario Livio Longo
- Department of Chemistry and Molecular Imaging Center; University of Turin; Torino Italy
| | - Alice Busato
- Department of Chemistry and Molecular Imaging Center; University of Turin; Torino Italy
| | - Stefania Lanzardo
- Department of Clinical and Biological Science; University of Turin; Torino Italy
| | - Federica Antico
- Department of Internal Medicine; University of Turin; Torino Italy
| | - Silvio Aime
- Department of Chemistry and Molecular Imaging Center; University of Turin; Torino Italy
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Manus LM, Strauch RC, Hung AH, Eckermann AL, Meade TJ. Analytical methods for characterizing magnetic resonance probes. Anal Chem 2012; 84:6278-87. [PMID: 22624599 PMCID: PMC3418482 DOI: 10.1021/ac300527z] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
The efficiency of Gd(III) contrast agents in magnetic resonance image enhancement is governed by a set of tunable structural parameters. Understanding and measuring these parameters requires specific analytical techniques. This Feature describes strategies to optimize each of the critical Gd(III) relaxation parameters for molecular imaging applications and the methods employed for their evaluation.
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Affiliation(s)
- Lisa M. Manus
- Department of Chemistry, Molecular Biosciences, Neurobiology, Biomedical Engineering, and Radiology, Northwestern University, Evanston, Illinois 60208-3113
| | - Renee C. Strauch
- Department of Chemistry, Molecular Biosciences, Neurobiology, Biomedical Engineering, and Radiology, Northwestern University, Evanston, Illinois 60208-3113
| | - Andy H. Hung
- Department of Chemistry, Molecular Biosciences, Neurobiology, Biomedical Engineering, and Radiology, Northwestern University, Evanston, Illinois 60208-3113
| | - Amanda L. Eckermann
- Department of Chemistry, Molecular Biosciences, Neurobiology, Biomedical Engineering, and Radiology, Northwestern University, Evanston, Illinois 60208-3113
| | - Thomas J. Meade
- Department of Chemistry, Molecular Biosciences, Neurobiology, Biomedical Engineering, and Radiology, Northwestern University, Evanston, Illinois 60208-3113
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35
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Lin CY, Yadav NN, Friedman JI, Ratnakar J, Sherry AD, van Zijl PCM. Using frequency-labeled exchange transfer to separate out conventional magnetization transfer effects from exchange transfer effects when detecting ParaCEST agents. Magn Reson Med 2012; 67:906-11. [PMID: 22287162 DOI: 10.1002/mrm.24161] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2011] [Revised: 12/18/2011] [Accepted: 12/20/2011] [Indexed: 12/30/2022]
Abstract
Paramagnetic chemical exchange saturation transfer agents combine the benefits of a large chemical shift difference and a fast exchange rate for sensitive MRI detection. However, the in vivo detection of these agents is hampered by the need for high B(1) fields to allow sufficiently fast saturation before exchange occurs, thus causing interference of large magnetization transfer effects from semisolid macromolecules. A recently developed approach named frequency-labeled exchange transfer utilizes excitation pulses instead of saturation pulses for detecting the exchanging protons. Using solutions and gel phantoms containing the europium (III) complex of DOTA tetraglycinate (EuDOTA-(gly)(-) (4) ), it is shown that frequency-labeled exchange transfer allows the separation of chemical exchange effects and magnetization transfer (MT) effects in the time domain, therefore allowing the study of the individual resonance of rapidly exchanging water molecules (k(ex) >10(4) s(-1) ) without interference from conventional broad-band MT.
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Affiliation(s)
- Chien-Yuan Lin
- University of Texas Southwestern Medical Center, Dallas, TX, USA
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36
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Szabó I, Crich SG, Alberti D, Kálmán FK, Aime S. Mn loaded apoferritin as an MRI sensor of melanin formation in melanoma cells. Chem Commun (Camb) 2012; 48:2436-8. [PMID: 22273600 DOI: 10.1039/c2cc17801j] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Mn(III)-loaded apoferritin is promptly reduced to Mn(II)-apoferritin by the oxidation of L-DOPA to melanin. The process is nicely witnessed by a marked relaxation enhancement of water proton relaxation rate that has been detected both in cultured melanoma cells and in tumor animal models.
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Affiliation(s)
- Ibolya Szabó
- Center for Molecular Imaging, Department of Chemistry IFM, University of Torino, via Nizza 52, Torino, Italy
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37
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Mahmoudi M, Serpooshan V, Laurent S. Engineered nanoparticles for biomolecular imaging. NANOSCALE 2011; 3:3007-26. [PMID: 21717012 DOI: 10.1039/c1nr10326a] [Citation(s) in RCA: 158] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
In recent years, the production of nanoparticles (NPs) and exploration of their unusual properties have attracted the attention of physicists, chemists, biologists and engineers. Interest in NPs arises from the fact that the mechanical, chemical, electrical, optical, magnetic, electro-optical and magneto-optical properties of these particles are different from their bulk properties and depend on the particle size. There are numerous areas where nanoparticulate systems are of scientific and technological interest, particularly in biomedicine where the emergence of NPs with specific properties (e.g. magnetic and fluorescence) for contrast agents can lead to advancing the understanding of biological processes at the biomolecular level. This review will cover a full description of the physics of various imaging methods, including MRI, optical techniques, X-rays and CT. In addition, the effect of NPs on the improvement of the mentioned non-invasive imaging methods will be discussed together with their advantages and disadvantages. A detailed discussion will also be provided on the recent advances in imaging agents, such as fluorescent dye-doped silica NPs, quantum dots, gold- and engineered polymeric-NPs, superparamagnetic iron oxide NPs (SPIONs), and multimodal NPs (i.e. nanomaterials that are active in both MRI and optical methods), which are employed to overcome many of the limitations of conventional contrast agents (e.g. gadolinium).
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Affiliation(s)
- Morteza Mahmoudi
- National Cell Bank, Pasteur Institute of Iran, Tehran, 11365-8639, Iran
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38
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Napolitano R, Soesbe TC, De León-Rodríguez LM, Sherry AD, Udugamasooriya DG. On-bead combinatorial synthesis and imaging of chemical exchange saturation transfer magnetic resonance imaging agents to identify factors that influence water exchange. J Am Chem Soc 2011; 133:13023-30. [PMID: 21793515 DOI: 10.1021/ja201123f] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
The sensitivity of magnetic resonance imaging (MRI) contrast agents is highly dependent on the rate of water exchange between the inner sphere of a paramagnetic ion and bulk water. Normally, identifying a paramagnetic complex that has optimal water exchange kinetics is done by synthesizing and testing one compound at a time. We report here a rapid, economical on-bead combinatorial synthesis of a library of imaging agents. Eighty different 1,4,7,10-tetraazacyclododecan-1,4,7,10-tetraacetic acid (DOTA)-tetraamide peptoid derivatives were prepared on beads using a variety of charged, uncharged but polar, hydrophobic, and variably sized primary amines. A single chemical exchange saturation transfer image of the on-bead library easily distinguished those compounds having the most favorable water exchange kinetics. This combinatorial approach will allow rapid screening of libraries of imaging agents to identify the chemical characteristics of a ligand that yield the most sensitive imaging agents. This technique could be automated and readily adapted to other types of MRI or magnetic resonance/positron emission tomography agents as well.
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Affiliation(s)
- Roberta Napolitano
- Advanced Imaging Research Center, University of Texas Southwestern Medical Center, 5323 Harry Hines Boulevard, Dallas, Texas 75390-8568, USA
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Verwilst P, Eliseeva SV, Carron S, Vander Elst L, Burtea C, Dehaen G, Laurent S, Binnemans K, Muller RN, Parac-Vogt TN, De Borggraeve WM. A Modular Approach towards the Synthesis of Target-Specific MRI Contrast Agents. Eur J Inorg Chem 2011. [DOI: 10.1002/ejic.201100575] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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40
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Geninatti-Crich S, Alberti D, Szabo I, Deagostino A, Toppino A, Barge A, Ballarini F, Bortolussi S, Bruschi P, Protti N, Stella S, Altieri S, Venturello P, Aime S. MRI-guided neutron capture therapy by use of a dual gadolinium/boron agent targeted at tumour cells through upregulated low-density lipoprotein transporters. Chemistry 2011; 17:8479-86. [PMID: 21671294 DOI: 10.1002/chem.201003741] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2010] [Indexed: 01/05/2023]
Abstract
The upregulation of low-density lipoprotein (LDL) transporters in tumour cells has been exploited to deliver a sufficient amount of gadolinium/boron/ligand (Gd/B/L) probes for neutron capture therapy, a binary chemio-radiotherapy for cancer treatment. The Gd/B/L probe consists of a carborane unit (ten B atoms) bearing an aliphatic chain on one side (to bind LDL particles), and a Gd(III)/1,4,7,10-tetraazacyclododecane monoamide complex on the other (for detection by magnetic resonance imaging (MRI)). Up to 190 Gd/B/L probes were loaded per LDL particle. The uptake from tumour cells was initially assessed on cell cultures of human hepatoma (HepG2), murine melanoma (B16), and human glioblastoma (U87). The MRI assessment of the amount of Gd/B/L taken up by tumour cells was validated by inductively coupled plasma-mass-spectrometric measurements of the Gd and B content. Measurements were undertaken in vivo on mice bearing tumours in which B16 tumour cells were inoculated at the base of the neck. From the acquisition of magnetic resonance images, it was established that after 4-6 hours from the administration of the Gd/B/L-LDL particles (0.1 and 1 mmol kg(-1) of Gd and (10)B, respectively) the amount of boron taken up in the tumour region is above the threshold required for successful NCT treatment. After neutron irradiation, tumour growth was followed for 20 days by MRI. The group of treated mice showed markedly lower tumour growth with respect to the control group.
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Affiliation(s)
- Simonetta Geninatti-Crich
- Department of Chemistry IFM and Molecular Imaging Center, Università di Torino, Via Nizza 52, 10125 Torino, Italy
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Marradi M, García I, Penadés S. Carbohydrate-Based Nanoparticles for Potential Applications in Medicine. PROGRESS IN MOLECULAR BIOLOGY AND TRANSLATIONAL SCIENCE 2011; 104:141-73. [DOI: 10.1016/b978-0-12-416020-0.00004-8] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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