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Brito B, Price TW, Gallo J, Bañobre-López M, Stasiuk GJ. Smart magnetic resonance imaging-based theranostics for cancer. Theranostics 2021; 11:8706-8737. [PMID: 34522208 PMCID: PMC8419031 DOI: 10.7150/thno.57004] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2020] [Accepted: 03/29/2021] [Indexed: 12/29/2022] Open
Abstract
Smart theranostics are dynamic platforms that integrate multiple functions, including at least imaging, therapy, and responsiveness, in a single agent. This review showcases a variety of responsive theranostic agents developed specifically for magnetic resonance imaging (MRI), due to the privileged position this non-invasive, non-ionising imaging modality continues to hold within the clinical imaging field. Different MRI smart theranostic designs have been devised in the search for more efficient cancer therapy, and improved diagnostic efficiency, through the increase of the local concentration of therapeutic effectors and MRI signal intensity in pathological tissues. This review explores novel small-molecule and nanosized MRI theranostic agents for cancer that exhibit responsiveness to endogenous (change in pH, redox environment, or enzymes) or exogenous (temperature, ultrasound, or light) stimuli. The challenges and obstacles in the design and in vivo application of responsive theranostics are also discussed to guide future research in this interdisciplinary field towards more controllable, efficient, and diagnostically relevant smart theranostics agents.
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Affiliation(s)
- Beatriz Brito
- Department of Imaging Chemistry and Biology, School of Biomedical Engineering and Imaging Sciences, King's College London, Strand, London, UK, SE1 7EH
- School of Life Sciences, Faculty of Health Sciences, University of Hull, Cottingham Road, Hull, UK, HU6 7RX
- Advanced Magnetic Theranostic Nanostructures Lab, International Iberian Nanotechnology Laboratory, Av. Mestre José Veiga, 4715-330 Braga
| | - Thomas W. Price
- Department of Imaging Chemistry and Biology, School of Biomedical Engineering and Imaging Sciences, King's College London, Strand, London, UK, SE1 7EH
| | - Juan Gallo
- Advanced Magnetic Theranostic Nanostructures Lab, International Iberian Nanotechnology Laboratory, Av. Mestre José Veiga, 4715-330 Braga
| | - Manuel Bañobre-López
- Advanced Magnetic Theranostic Nanostructures Lab, International Iberian Nanotechnology Laboratory, Av. Mestre José Veiga, 4715-330 Braga
| | - Graeme J. Stasiuk
- Department of Imaging Chemistry and Biology, School of Biomedical Engineering and Imaging Sciences, King's College London, Strand, London, UK, SE1 7EH
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2
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Anbu S, Hoffmann SHL, Carniato F, Kenning L, Price TW, Prior TJ, Botta M, Martins AF, Stasiuk GJ. A Single-Pot Template Reaction Towards a Manganese-Based T 1 Contrast Agent. Angew Chem Int Ed Engl 2021; 60:10736-10744. [PMID: 33624910 PMCID: PMC8252504 DOI: 10.1002/anie.202100885] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2021] [Indexed: 12/23/2022]
Abstract
Manganese-based contrast agents (MnCAs) have emerged as suitable alternatives to gadolinium-based contrast agents (GdCAs). However, due to their kinetic lability and laborious synthetic procedures, only a few MnCAs have found clinical MRI application. In this work, we have employed a highly innovative single-pot template synthetic strategy to develop a MnCA, MnLMe , and studied the most important physicochemical properties in vitro. MnLMe displays optimized r1 relaxivities at both medium (20 and 64 MHz) and high magnetic fields (300 and 400 MHz) and an enhanced r1b =21.1 mM-1 s-1 (20 MHz, 298 K, pH 7.4) upon binding to BSA (Ka =4.2×103 M-1 ). In vivo studies show that MnLMe is cleared intact into the bladder through renal excretion and has a prolonged blood half-life compared to the commercial GdCA Magnevist. MnLMe shows great promise as a novel MRI contrast agent.
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Affiliation(s)
- Sellamuthu Anbu
- Department of Biomedical SciencesUniversity of HullCottingham RoadHullHU6 7RXUK
- Department of ChemistryUniversity of HullCottingham RoadHullHU6 7RXUK
| | - Sabrina H. L. Hoffmann
- Werner Siemens Imaging CenterDepartment of Preclinical Imaging and RadiopharmacyEberhard Karls University Tübingen, Röntgenweg 13/172076TübingenGermany
| | - Fabio Carniato
- Dipartimento di Scienze e InnovazioneTecnologicaUniversità del Piemonte Orientale “A. Avogadro”Viale Teresa Michel 1115121AlessandriaItaly
| | - Lawrence Kenning
- MRI centreHull Royal Infirmary Hospital NHS TrustAnlaby RoadHullHU3 2JZUK
| | - Thomas W. Price
- Department of Imaging Chemistry and BiologySchool of Biomedical Engineering and Imaging SciencesKing's College LondonFourth Floor Lambeth WingSt Thomas' HospitalLondonSE1 7EHUK
| | - Timothy J. Prior
- Department of ChemistryUniversity of HullCottingham RoadHullHU6 7RXUK
| | - Mauro Botta
- Dipartimento di Scienze e InnovazioneTecnologicaUniversità del Piemonte Orientale “A. Avogadro”Viale Teresa Michel 1115121AlessandriaItaly
| | - Andre F. Martins
- Werner Siemens Imaging CenterDepartment of Preclinical Imaging and RadiopharmacyEberhard Karls University Tübingen, Röntgenweg 13/172076TübingenGermany
- Cluster of Excellence iFIT (EXC 2180) “Image-Guided and Functionally Instructed Tumor Therapies”University of TuebingenGermany
| | - Graeme J. Stasiuk
- Department of Imaging Chemistry and BiologySchool of Biomedical Engineering and Imaging SciencesKing's College LondonFourth Floor Lambeth WingSt Thomas' HospitalLondonSE1 7EHUK
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3
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Anbu S, Hoffmann SHL, Carniato F, Kenning L, Price TW, Prior TJ, Botta M, Martins AF, Stasiuk GJ. A Single-Pot Template Reaction Towards a Manganese-Based T1 Contrast Agent. ANGEWANDTE CHEMIE (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2021; 133:10831-10839. [PMID: 38505690 PMCID: PMC10947048 DOI: 10.1002/ange.202100885] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/19/2021] [Indexed: 12/20/2022]
Abstract
Manganese-based contrast agents (MnCAs) have emerged as suitable alternatives to gadolinium-based contrast agents (GdCAs). However, due to their kinetic lability and laborious synthetic procedures, only a few MnCAs have found clinical MRI application. In this work, we have employed a highly innovative single-pot template synthetic strategy to develop a MnCA, MnLMe, and studied the most important physicochemical properties in vitro. MnLMe displays optimized r 1 relaxivities at both medium (20 and 64 MHz) and high magnetic fields (300 and 400 MHz) and an enhanced r 1 b=21.1 mM-1 s-1 (20 MHz, 298 K, pH 7.4) upon binding to BSA (K a=4.2×103 M-1). In vivo studies show that MnLMe is cleared intact into the bladder through renal excretion and has a prolonged blood half-life compared to the commercial GdCA Magnevist. MnLMe shows great promise as a novel MRI contrast agent.
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Affiliation(s)
- Sellamuthu Anbu
- Department of Biomedical SciencesUniversity of HullCottingham RoadHullHU6 7RXUK
- Department of ChemistryUniversity of HullCottingham RoadHullHU6 7RXUK
| | - Sabrina H. L. Hoffmann
- Werner Siemens Imaging CenterDepartment of Preclinical Imaging and RadiopharmacyEberhard Karls University Tübingen, Röntgenweg 13/172076TübingenGermany
| | - Fabio Carniato
- Dipartimento di Scienze e InnovazioneTecnologicaUniversità del Piemonte Orientale “A. Avogadro”Viale Teresa Michel 1115121AlessandriaItaly
| | - Lawrence Kenning
- MRI centreHull Royal Infirmary Hospital NHS TrustAnlaby RoadHullHU3 2JZUK
| | - Thomas W. Price
- Department of Imaging Chemistry and BiologySchool of Biomedical Engineering and Imaging SciencesKing's College LondonFourth Floor Lambeth WingSt Thomas' HospitalLondonSE1 7EHUK
| | - Timothy J. Prior
- Department of ChemistryUniversity of HullCottingham RoadHullHU6 7RXUK
| | - Mauro Botta
- Dipartimento di Scienze e InnovazioneTecnologicaUniversità del Piemonte Orientale “A. Avogadro”Viale Teresa Michel 1115121AlessandriaItaly
| | - Andre F. Martins
- Werner Siemens Imaging CenterDepartment of Preclinical Imaging and RadiopharmacyEberhard Karls University Tübingen, Röntgenweg 13/172076TübingenGermany
- Cluster of Excellence iFIT (EXC 2180) “Image-Guided and Functionally Instructed Tumor Therapies”University of TuebingenGermany
| | - Graeme J. Stasiuk
- Department of Imaging Chemistry and BiologySchool of Biomedical Engineering and Imaging SciencesKing's College LondonFourth Floor Lambeth WingSt Thomas' HospitalLondonSE1 7EHUK
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4
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Preparation, Functionalization, Modification, and Applications of Nanostructured Gold: A Critical Review. ENERGIES 2021. [DOI: 10.3390/en14051278] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Gold nanoparticles (Au NPs) play a significant role in science and technology because of their unique size, shape, properties and broad range of potential applications. This review focuses on the various approaches employed for the synthesis, modification and functionalization of nanostructured Au. The potential catalytic applications and their enhancement upon modification of Au nanostructures have also been discussed in detail. The present analysis also offers brief summaries of the major Au nanomaterials synthetic procedures, such as hydrothermal, solvothermal, sol-gel, direct oxidation, chemical vapor deposition, sonochemical deposition, electrochemical deposition, microwave and laser pyrolysis. Among the various strategies used for improving the catalytic performance of nanostructured Au, the modification and functionalization of nanostructured Au produced better results. Therefore, various synthesis, modification and functionalization methods employed for better catalytic outcomes of nanostructured Au have been summarized in this review.
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Perry HL, Yoon IC, Chabloz NG, Molisso S, Stasiuk GJ, Botnar RM, Wilton-Ely JDET. Metallostar Assemblies Based on Dithiocarbamates for Use as MRI Contrast Agents. Inorg Chem 2020; 59:10813-10823. [PMID: 32677827 DOI: 10.1021/acs.inorgchem.0c01318] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Two different octadentate gadolinium chelates based on DO3A and DOTAGA chelates (hydration number q = 1) have been used to prepare a series of bi-, tri-, and tetrametallic d-f mixed-metal complexes. The piperazine-based dithiocarbamate linker ensures that rotation of the gadolinium chelates is restricted, leading to enhanced relaxivity (r1) values, which increase with the overall mass and number of gadolinium units. The r1 value (at 10 MHz, 25 °C) per gadolinium unit rises from 5.0 mM-1 s-1 for the Gd-DO3A-NH2 monogadolinium chelate to 9.2 mM-1 s-1 in a trigadolinium complex with a ruthenium(III) core. Using a 1.5 T clinical scanner operating at 63.87 MHz (25 °C), an 86% increase in the relaxivity per gadolinium unit is observed for this multimetallic compound compared to clinically approved Dotarem. The gadolinium complexes based on the DOTAGA chelate also performed well at 63.87 MHz, with a relaxivity value of 9.5 mM-1 s-1 per gadolinium unit being observed for the trigadolinium d-f mixed-metal complex with a ruthenium(III) core. The versatility of dithiocarbamate coordination chemistry thus provides access to a wide range of d-f hybrids with potential for use as high-performance MRI contrast agents.
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Affiliation(s)
- Hannah L Perry
- Department of Chemistry, Imperial College London, Molecular Sciences Research Hub, White City Campus, London W12 0BZ, U.K.,School of Biomedical Engineering and Imaging Sciences, King's College London, St. Thomas' Hospital, London SE1 7EH, U.K
| | - Il-Chul Yoon
- Department of Chemistry, Imperial College London, Molecular Sciences Research Hub, White City Campus, London W12 0BZ, U.K
| | - Nicolas G Chabloz
- Department of Chemistry, Imperial College London, Molecular Sciences Research Hub, White City Campus, London W12 0BZ, U.K
| | - Susannah Molisso
- Department of Chemistry, Imperial College London, Molecular Sciences Research Hub, White City Campus, London W12 0BZ, U.K
| | - Graeme J Stasiuk
- School of Biomedical Engineering and Imaging Sciences, King's College London, St. Thomas' Hospital, London SE1 7EH, U.K
| | - René M Botnar
- School of Biomedical Engineering and Imaging Sciences, King's College London, St. Thomas' Hospital, London SE1 7EH, U.K
| | - James D E T Wilton-Ely
- Department of Chemistry, Imperial College London, Molecular Sciences Research Hub, White City Campus, London W12 0BZ, U.K
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6
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Chabloz NG, Perry HL, Yoon IC, Coulson AJ, White AJP, Stasiuk GJ, Botnar RM, Wilton-Ely JDET. Combined Magnetic Resonance Imaging and Photodynamic Therapy Using Polyfunctionalised Nanoparticles Bearing Robust Gadolinium Surface Units. Chemistry 2020; 26:4552-4566. [PMID: 31981387 DOI: 10.1002/chem.201904757] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2019] [Indexed: 12/12/2022]
Abstract
A robust dithiocarbamate tether allows novel gadolinium units based on DOTAGA (q=1) to be attached to the surface of gold nanoparticles (2.6-4.1 nm diameter) along with functional units offering biocompatibility, targeting and photodynamic therapy. A dramatic increase in relaxivity (r1 ) per Gd unit from 5.01 mm-1 s-1 in unbound form to 31.68 mm-1 s-1 (10 MHz, 37 °C) is observed when immobilised on the surface due to restricted rotation and enhanced rigidity of the Gd complex on the nanoparticle surface. The single-step synthetic route provides a straightforward and versatile way of preparing multifunctional gold nanoparticles, including examples with conjugated zinc-tetraphenylporphyrin photosensitizers. The lack of toxicity of these materials (MTT assays) is transformed on irradiation of HeLa cells for 30 minutes (PDT), leading to 75 % cell death. In addition to passive targeting, the inclusion of units capable of actively targeting overexpressed folate receptors illustrates the potential of these assemblies as targeted theranostic agents.
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Affiliation(s)
- Nicolas G Chabloz
- Department of Chemistry, Molecular Sciences Research Hub, Imperial College London, White City Campus, London, W12 0BZ, UK
| | - Hannah L Perry
- Department of Chemistry, Molecular Sciences Research Hub, Imperial College London, White City Campus, London, W12 0BZ, UK.,Division of Imaging Sciences and Biomedical Engineering, King's College London, St Thomas' Hospital, London, SE1 7EH, UK
| | - Il-Chul Yoon
- Department of Chemistry, Molecular Sciences Research Hub, Imperial College London, White City Campus, London, W12 0BZ, UK
| | - Andrew J Coulson
- Department of Chemistry, Molecular Sciences Research Hub, Imperial College London, White City Campus, London, W12 0BZ, UK
| | - Andrew J P White
- Department of Chemistry, Molecular Sciences Research Hub, Imperial College London, White City Campus, London, W12 0BZ, UK
| | - Graeme J Stasiuk
- School of Life Sciences, Biomedical Sciences, University of Hull, Hull, HU6 7RX, UK
| | - René M Botnar
- Division of Imaging Sciences and Biomedical Engineering, King's College London, St Thomas' Hospital, London, SE1 7EH, UK
| | - James D E T Wilton-Ely
- Department of Chemistry, Molecular Sciences Research Hub, Imperial College London, White City Campus, London, W12 0BZ, UK.,London Centre for Nanotechnology (LCN), London, UK
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7
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Dumur F, Dumas E, Mayer CR. Functionalization of Gold Nanoparticles by Inorganic Entities. NANOMATERIALS (BASEL, SWITZERLAND) 2020; 10:E548. [PMID: 32197512 PMCID: PMC7153718 DOI: 10.3390/nano10030548] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/25/2020] [Revised: 03/12/2020] [Accepted: 03/13/2020] [Indexed: 02/06/2023]
Abstract
The great affinity of gold surface for numerous electron-donating groups has largely contributed to the rapid development of functionalized gold nanoparticles (Au-NPs). In the last years, a new subclass of nanocomposite has emerged, based on the association of inorganic molecular entities (IME) with Au-NPs. This highly extended and diversified subclass was promoted by the synergy between the intrinsic properties of the shell and the gold core. This review-divided into four main parts-focuses on an introductory section of the basic notions related to the stabilization of gold nanoparticles and defines in a second part the key role played by the functionalizing agent. Then, we present a wide range of inorganic molecular entities used to prepare these nanocomposites (NCs). In particular, we focus on four different types of inorganic systems, their topologies, and their current applications. Finally, the most recent applications are described before an overview of this new emerging field of research.
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Affiliation(s)
- Frédéric Dumur
- Aix Marseille Univ, CNRS, ICR, UMR 7273, F-13397 Marseille, France
| | - Eddy Dumas
- Institut Lavoisier de Versailles, UMR CNRS 8180, Université de Versailles Saint-Quentin-en-Yvelines, F-78035 Versailles, France;
| | - Cédric R. Mayer
- Laboratoire LuMin, FRE CNRS 2036, CNRS, Université Paris-Sud, ENS Paris-Saclay, Université Paris-Saclay, F-91405 Orsay CEDEX, France
- Département de Chimie, UFR des Sciences, Université de Versailles Saint-Quentin-en-Yvelines, F-78035 Versailles, France
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8
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Perry HL, Botnar RM, Wilton-Ely JDET. Gold nanomaterials functionalised with gadolinium chelates and their application in multimodal imaging and therapy. Chem Commun (Camb) 2020; 56:4037-4046. [DOI: 10.1039/d0cc00196a] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
An overview of recent progress in the design of gadolinium-functionalised gold nanoparticles for use in MRI, multimodal imaging and theranostics.
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Affiliation(s)
- Hannah L. Perry
- Molecular Sciences Research Hub
- Department of Chemistry
- White City Campus
- Imperial College London
- London
| | - René M. Botnar
- School of Biomedical Engineering and Imaging Sciences
- King's College London
- London
- UK
| | - James D. E. T. Wilton-Ely
- Molecular Sciences Research Hub
- Department of Chemistry
- White City Campus
- Imperial College London
- London
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9
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García‐Calvo J, Robson JA, Torroba T, Wilton‐Ely JDET. Synthesis and Application of Ruthenium(II) Alkenyl Complexes with Perylene Fluorophores for the Detection of Toxic Vapours and Gases. Chemistry 2019; 25:14214-14222. [DOI: 10.1002/chem.201903303] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2019] [Indexed: 12/18/2022]
Affiliation(s)
- José García‐Calvo
- Department of ChemistryFaculty of ScienceUniversity of Burgos 09001 Burgos Spain
| | - Jonathan A. Robson
- Department of ChemistryImperial College London, Molecular Sciences Research Hub, White City Campus London W12 0BZ UK
| | - Tomás Torroba
- Department of ChemistryFaculty of ScienceUniversity of Burgos 09001 Burgos Spain
| | - James D. E. T. Wilton‐Ely
- Department of ChemistryImperial College London, Molecular Sciences Research Hub, White City Campus London W12 0BZ UK
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10
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Chabloz NG, Wenzel MN, Perry HL, Yoon IC, Molisso S, Stasiuk GJ, Elson DS, Cass AEG, Wilton-Ely JDET. Polyfunctionalised Nanoparticles Bearing Robust Gadolinium Surface Units for High Relaxivity Performance in MRI. Chemistry 2019; 25:10895-10906. [PMID: 31127668 DOI: 10.1002/chem.201901820] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2019] [Revised: 05/16/2019] [Indexed: 12/19/2022]
Abstract
The first example of an octadentate gadolinium unit based on DO3A (hydration number q=1) with a dithiocarbamate tether has been designed and attached to the surface of gold nanoparticles (around 4.4 nm in diameter). In addition to the superior robustness of this attachment, the restricted rotation of the Gd complex on the nanoparticle surface leads to a dramatic increase in relaxivity (r1 ) from 4.0 mm-1 s-1 in unbound form to 34.3 mm-1 s-1 (at 10 MHz, 37 °C) and 22±2 mm-1 s-1 (at 63.87 MHz, 25 °C) when immobilised on the surface. The one-pot synthetic route provides a straightforward and versatile way of preparing a range of multifunctional gold nanoparticles. The incorporation of additional surface units for biocompatibility (PEG and thioglucose units) and targeting (folic acid) leads to little detrimental effect on the high relaxivity observed for these non-toxic multifunctional materials. In addition to the passive targeting attributed to gold nanoparticles, the inclusion of a unit capable of targeting the folate receptors overexpressed by cancer cells, such as HeLa cells, illustrates the potential of these assemblies.
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Affiliation(s)
- Nicolas G Chabloz
- Department of Chemistry, Imperial College London, Molecular Sciences Research Hub, White City Campus, London, W12 0BZ, UK
| | - Margot N Wenzel
- Department of Chemistry, Imperial College London, Molecular Sciences Research Hub, White City Campus, London, W12 0BZ, UK
| | - Hannah L Perry
- Department of Chemistry, Imperial College London, Molecular Sciences Research Hub, White City Campus, London, W12 0BZ, UK
| | - Il-Chul Yoon
- Department of Chemistry, Imperial College London, Molecular Sciences Research Hub, White City Campus, London, W12 0BZ, UK
| | - Susannah Molisso
- Department of Chemistry, Imperial College London, Molecular Sciences Research Hub, White City Campus, London, W12 0BZ, UK
| | - Graeme J Stasiuk
- School of Life Sciences, Biomedical Sciences, University of Hull, Hull, HU6 7RX, UK
| | - Daniel S Elson
- Hamlyn Centre for Robotic Surgery, Institute of Global Health Innovation and Department of Surgery and Cancer, Imperial College London, UK
| | - Anthony E G Cass
- Department of Chemistry, Imperial College London, Molecular Sciences Research Hub, White City Campus, London, W12 0BZ, UK.,Institute of Biomedical Engineering, Imperial College London, UK.,London Centre for Nanotechnology (LCN), UK
| | - James D E T Wilton-Ely
- Department of Chemistry, Imperial College London, Molecular Sciences Research Hub, White City Campus, London, W12 0BZ, UK.,London Centre for Nanotechnology (LCN), UK
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11
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Mognon L, Richardson S, Agonigi G, Bond T, Marchetti F, Wilton-Ely JD. Heterotrimetallic complexes of iron and ruthenium based on vinyliminium dithiocarboxylate ligands. J Organomet Chem 2019. [DOI: 10.1016/j.jorganchem.2019.02.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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12
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Jantan KA, McArdle JM, Mognon L, Fiorini V, Wilkinson LA, White AJP, Stagni S, Long NJ, Wilton-Ely JDET. Heteromultimetallic compounds based on polyfunctional carboxylate linkers. NEW J CHEM 2019. [DOI: 10.1039/c8nj06455e] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Polyfunctional linkers bearing carboxylate, bipyridine and alkyne functionalities allow the stepwise construction of multimetallic assemblies incorporating redox and photophysical properties.
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Affiliation(s)
- Khairil A. Jantan
- Department of Chemistry, Imperial College London, Molecular Sciences Research Hub, White City Campus
- London W12 0BZ
- UK
- Faculty of Applied Sciences, Universiti Teknologi MARA (UiTM)
- 40450 Shah Alam
| | - James M. McArdle
- Department of Chemistry, Imperial College London, Molecular Sciences Research Hub, White City Campus
- London W12 0BZ
- UK
| | - Lorenzo Mognon
- Department of Chemistry, Imperial College London, Molecular Sciences Research Hub, White City Campus
- London W12 0BZ
- UK
| | - Valentina Fiorini
- Department of Industrial Chemistry “Toso Montanari” – University of Bologna, Viale del Risorgimento 4
- Bologna 40126
- Italy
| | - Luke A. Wilkinson
- Department of Chemistry, Imperial College London, Molecular Sciences Research Hub, White City Campus
- London W12 0BZ
- UK
| | - Andrew J. P. White
- Department of Chemistry, Imperial College London, Molecular Sciences Research Hub, White City Campus
- London W12 0BZ
- UK
| | - Stefano Stagni
- Department of Industrial Chemistry “Toso Montanari” – University of Bologna, Viale del Risorgimento 4
- Bologna 40126
- Italy
| | - Nicholas J. Long
- Department of Chemistry, Imperial College London, Molecular Sciences Research Hub, White City Campus
- London W12 0BZ
- UK
| | - James D. E. T. Wilton-Ely
- Department of Chemistry, Imperial College London, Molecular Sciences Research Hub, White City Campus
- London W12 0BZ
- UK
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13
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Giovenzana GB, Lattuada L, Negri R. Recent Advances in Bifunctional Paramagnetic Chelates for MRI. Isr J Chem 2017. [DOI: 10.1002/ijch.201700028] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Giovanni B. Giovenzana
- Dipartimento di Scienze del Farmaco; Università del Piemonte Orientale “A. Avogadro”; L.go Donegani 2/3 I-28100 Novara Italy
| | - Luciano Lattuada
- Bracco Imaging SpA, Bracco Research Centre; Via Ribes 5 I-10010 Colleretto Giacosa TO, Italy
| | - Roberto Negri
- Dipartimento di Scienze del Farmaco; Università del Piemonte Orientale “A. Avogadro”; L.go Donegani 2/3 I-28100 Novara Italy
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14
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Toscani A, Jantan KA, Hena JB, Robson JA, Parmenter EJ, Fiorini V, White AJP, Stagni S, Wilton-Ely JDET. The stepwise generation of multimetallic complexes based on a vinylbipyridine linkage and their photophysical properties. Dalton Trans 2017; 46:5558-5570. [PMID: 27872923 DOI: 10.1039/c6dt03810g] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
The versatile rhenium complex [ReCl(CO)3(bpyC[triple bond, length as m-dash]CH)] (HC[triple bond, length as m-dash]Cbpy = 5-ethynyl-2,2'-bipyridine) is used to generate a series of bimetallic complexes through the hydrometallation of [MHCl(CO)(BTD)(PPh3)2] (M = Ru, Os; BTD = 2,1,3-benzothiadiazole). The ruthenium complex [Ru{CH[double bond, length as m-dash]CH-bpyReCl(CO)3}Cl(BTD)(CO)(PPh3)2] was characterised structurally. Ligand exchange reactions with bifunctional linkers bearing oxygen and sulfur donors provide access to tetra- and pentametallic complexes such as [{M{CH[double bond, length as m-dash]CH-bpyReCl(CO)3}(CO)(PPh3)2}2(S2CNC4H8NCS2)] and Fe[C5H4CO2M{CH[double bond, length as m-dash]CH-bpyReCl(CO)3}(CO)(PPh3)2]2. The effect of the group 8 metal on the photophysical properties of the rhenium centre was investigated using the complexes [Ru{CH[double bond, length as m-dash]CH-bpyReCl(CO)3}Cl(BTD)(CO)(PPh3)2] and [M{CH[double bond, length as m-dash]CH-bpyReCl(CO)3}{S2P(OEt)2}(CO)(PPh3)2] (M = Ru, Os). This revealed the quenching of the rhenium-based emission in favour of weak radiative processes based on the Ru and Os centres. The potential for exploiting this effect is illustrated by the reaction of [Ru{CH[double bond, length as m-dash]CH-bpyReCl(CO)3}Cl(CO)(BTD)(PPh3)2] with carbon monoxide, which results in a 5-fold fluorescence enhancement in the dicarbonyl product, [Ru{CH[double bond, length as m-dash]CH-bpyReCl(CO)3}Cl(CO)2(PPh3)2], as the quenching effect is disrupted.
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Affiliation(s)
- Anita Toscani
- Department of Chemistry, Imperial College London, South Kensington Campus, London SW7 2AZ, UK.
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15
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Eling CJ, Price TW, Marshall ARL, Narda Viscomi F, Robinson P, Firth G, Adawi AM, Bouillard JSG, Stasiuk GJ. A Dual-Modal SERS/Fluorescence Gold Nanoparticle Probe for Mitochondrial Imaging. Chempluschem 2017; 82:674-680. [DOI: 10.1002/cplu.201600593] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2016] [Revised: 01/09/2017] [Indexed: 12/19/2022]
Affiliation(s)
- Charlotte J. Eling
- School of Life Sciences, Biomedical Section; University of Hull; Cottingham Road Hull HU6 7RX United Kingdom
- School of Mathematics and Physical Sciences; Department of Physics and Mathematics; University of Hull; United Kingdom
| | - Thomas W. Price
- School of Life Sciences, Biomedical Section; University of Hull; Cottingham Road Hull HU6 7RX United Kingdom
| | - Addison R. L. Marshall
- School of Mathematics and Physical Sciences; Department of Physics and Mathematics; University of Hull; United Kingdom
| | - Francesco Narda Viscomi
- School of Mathematics and Physical Sciences; Department of Physics and Mathematics; University of Hull; United Kingdom
| | - Peter Robinson
- School of Mathematics and Physical Sciences; Department of Physics and Mathematics; University of Hull; United Kingdom
| | - George Firth
- School of Life Sciences, Biomedical Section; University of Hull; Cottingham Road Hull HU6 7RX United Kingdom
| | - Ali M. Adawi
- School of Mathematics and Physical Sciences; Department of Physics and Mathematics; University of Hull; United Kingdom
- G. W. Gray Centre for Advanced Materials; University of Hull; United Kingdom
| | - Jean-Sebastien G. Bouillard
- School of Mathematics and Physical Sciences; Department of Physics and Mathematics; University of Hull; United Kingdom
- Department of Physics; King's College London; Strand London WC2R 2LS United Kingdom
- G. W. Gray Centre for Advanced Materials; University of Hull; United Kingdom
| | - Graeme J. Stasiuk
- School of Life Sciences, Biomedical Section; University of Hull; Cottingham Road Hull HU6 7RX United Kingdom
- Positron Emission Tomography Research Centre; University of Hull; United Kingdom
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16
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Larsson K, Cullen TD, Mezyk SP, McDowell RG, Martin LR. Complications in complexation kinetics for lanthanides with DTPA using dye probe molecules in aqueous solution. RSC Adv 2017. [DOI: 10.1039/c7ra04755j] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Dye probe molecules were used to investigate lanthanide complexation and verify the viability of the ligand displacement methodology for measuring DTPA complexation rate constants. Results showed that dye probes underestimate the rate constants.
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Affiliation(s)
- K. Larsson
- Department of Chemistry and Biochemistry
- California State University Long Beach
- Long Beach
- USA
| | - T. D. Cullen
- Department of Chemistry and Biochemistry
- California State University Long Beach
- Long Beach
- USA
| | - S. P. Mezyk
- Department of Chemistry and Biochemistry
- California State University Long Beach
- Long Beach
- USA
| | - R. G. McDowell
- Aqueous Separations and Radiochemistry Department
- Idaho National Laboratory
- Idaho Falls
- USA
| | - L. R. Martin
- Aqueous Separations and Radiochemistry Department
- Idaho National Laboratory
- Idaho Falls
- USA
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17
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Robson JA, Gonzàlez de Rivera F, Jantan KA, Wenzel MN, White AJP, Rossell O, Wilton-Ely JDET. Bifunctional Chalcogen Linkers for the Stepwise Generation of Multimetallic Assemblies and Functionalized Nanoparticles. Inorg Chem 2016; 55:12982-12996. [DOI: 10.1021/acs.inorgchem.6b02409] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Jonathan A. Robson
- Department of Chemistry, Imperial College London, South Kensington Campus, London SW7 2AZ, U.K
| | - Ferran Gonzàlez de Rivera
- Department of Chemistry, Imperial College London, South Kensington Campus, London SW7 2AZ, U.K
- Departament de Química Inorgànica, Universitat de Barcelona, Martí Franquès 1-11, 08028 Barcelona, Spain
| | - Khairil A. Jantan
- Department of Chemistry, Imperial College London, South Kensington Campus, London SW7 2AZ, U.K
| | - Margot N. Wenzel
- Department of Chemistry, Imperial College London, South Kensington Campus, London SW7 2AZ, U.K
| | - Andrew J. P. White
- Department of Chemistry, Imperial College London, South Kensington Campus, London SW7 2AZ, U.K
| | - Oriol Rossell
- Departament de Química Inorgànica, Universitat de Barcelona, Martí Franquès 1-11, 08028 Barcelona, Spain
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18
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Holbrook RJ, Rammohan N, Rotz MW, MacRenaris KW, Preslar AT, Meade TJ. Gd(III)-Dithiolane Gold Nanoparticles for T1-Weighted Magnetic Resonance Imaging of the Pancreas. NANO LETTERS 2016; 16:3202-9. [PMID: 27050622 PMCID: PMC5045863 DOI: 10.1021/acs.nanolett.6b00599] [Citation(s) in RCA: 53] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Pancreatic adenocarcinoma has a 5 year survival of approximately 3% and median survival of 6 months and is among the most dismal of prognoses in all of medicine. This poor prognosis is largely due to delayed diagnosis where patients remain asymptomatic until advanced disease is present. Therefore, techniques to allow early detection of pancreatic adenocarcinoma are desperately needed. Imaging of pancreatic tissue is notoriously difficult, and the development of new imaging techniques would impact our understanding of organ physiology and pathology with applications in disease diagnosis, staging, and longitudinal response to therapy in vivo. Magnetic resonance imaging (MRI) provides numerous advantages for these types of investigations; however, it is unable to delineate the pancreas due to low inherent contrast within this tissue type. To overcome this limitation, we have prepared a new Gd(III) contrast agent that accumulates in the pancreas and provides significant contrast enhancement by MR imaging. We describe the synthesis and characterization of a new dithiolane-Gd(III) complex and a straightforward and scalable approach for conjugation to a gold nanoparticle. We present data that show the nanoconjugates exhibit very high per particle values of r1 relaxivity at both low and high magnetic field strengths due to the high Gd(III) payload. We provide evidence of pancreatic tissue labeling that includes MR images, post-mortem biodistribution analysis, and pancreatic tissue evaluation of particle localization. Significant contrast enhancement was observed allowing clear identification of the pancreas with contrast-to-noise ratios exceeding 35:1.
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Affiliation(s)
- Robert J. Holbrook
- Department of Chemistry, Molecular Biosciences, Neurobiology, Radiology, and Center for Advanced Molecular Imaging, Northwestern University, Evanston, Illinois 60208, United States
| | - Nikhil Rammohan
- Department of Chemistry, Molecular Biosciences, Neurobiology, Radiology, and Center for Advanced Molecular Imaging, Northwestern University, Evanston, Illinois 60208, United States
| | - Matthew W. Rotz
- Department of Chemistry, Molecular Biosciences, Neurobiology, Radiology, and Center for Advanced Molecular Imaging, Northwestern University, Evanston, Illinois 60208, United States
| | - Keith W. MacRenaris
- Department of Chemistry, Molecular Biosciences, Neurobiology, Radiology, and Center for Advanced Molecular Imaging, Northwestern University, Evanston, Illinois 60208, United States
| | - Adam T. Preslar
- Department of Chemistry, Molecular Biosciences, Neurobiology, Radiology, and Center for Advanced Molecular Imaging, Northwestern University, Evanston, Illinois 60208, United States
| | - Thomas J. Meade
- Department of Chemistry, Molecular Biosciences, Neurobiology, Radiology, and Center for Advanced Molecular Imaging, Northwestern University, Evanston, Illinois 60208, United States
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19
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Yu Y, Hu Z, Chen Z, Yang J, Gao H, Chen Z. Organically-modified magnesium silicate nanocomposites for high-performance heavy metal removal. RSC Adv 2016. [DOI: 10.1039/c6ra20181d] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
A disulfide-grafted polyethyleneimine (PES)@Mg2SiO4composite was synthesized, characterized, and used successfully to remove heavy metals from wastewater.
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Affiliation(s)
- Yichang Yu
- State Key Laboratory of Pollution Control and Resource Reuse
- College of Environmental Science and Engineering
- Tongji University
- Shanghai 200092
- PR China
| | - Zhangjun Hu
- State Key Laboratory of Pollution Control and Resource Reuse
- College of Environmental Science and Engineering
- Tongji University
- Shanghai 200092
- PR China
| | - Zhenyong Chen
- State Key Laboratory of Pollution Control and Resource Reuse
- College of Environmental Science and Engineering
- Tongji University
- Shanghai 200092
- PR China
| | - Jiaxiang Yang
- Key Laboratory of Functional Inorganic Materials of Anhui Province
- Anhui University
- Hefei 230039
- PR China
| | - Hongwen Gao
- State Key Laboratory of Pollution Control and Resource Reuse
- College of Environmental Science and Engineering
- Tongji University
- Shanghai 200092
- PR China
| | - Zhiwen Chen
- School of Environmental and Chemical Engineering
- Shanghai University
- Shanghai
- PR China
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20
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Pallavicini P, Bernhard C, Chirico G, Dacarro G, Denat F, Donà A, Milanese C, Taglietti A. Gold nanostars co-coated with the Cu(II) complex of a tetraazamacrocyclic ligand. Dalton Trans 2015; 44:5652-61. [PMID: 25708886 DOI: 10.1039/c4dt03042g] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
The twelve-membered tetraazamacrocyclic ligand L1 bears an appended lipoic acid unit, whose disulphide ring is an efficient grafting moiety for the surface of gold nanostars (GNS). The GNS that were used featured a localized surface plasmon resonance (LSPR) absorption at ∼800 nm, i.e. in the near infrared (NIR). We investigated different approaches for coating them with the Cu(2+) complex of L1. While the direct reaction of [CuL1](2+) with as-prepared GNS led to aggregation, an initial coating step with polyethyleneglycol-thiol (PEG-SH) was found to be advantageous. Displacement reactions were carried out on pegylated GNS either with [CuL1](2+), directly generating [Cun(L1@GNS)](2n+), or with void L1, thus obtaining @GNS that coordinates Cu(2+) in a second step. In both cases, even with a large excess of the competing disulphide moiety, only partial displacement of PEG-SH is observed, obtaining ca. 500-1500 [CuL1](2+) per GNS depending on the conditions, with PEG-SH remaining in the [Cun(L1@GNS)](2n+) hybrids and imparting them with remarkable stability. Comparison of the photothermal and two-photon luminescence (TPL) properties of the GNS between the pegylated GNS and [Cun(L1@GNS)](2n+) revealed that the grafted copper complex does not change them to any extent. Finally, the stability against demetallation and transmetallation of the complexes, as well as the fast kinetics of complexation of the monodispersed macrocycle and of L1@GNS, have been examined, suggesting [Cun(L1@GNS)](2n+) as a device capable of TPL optical tracking and NIR photothermal therapy and as a possible agent for PET imaging.
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21
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Sherwood R, Gonzàlez de Rivera F, Wan JH, Zhang Q, White AJP, Rossell O, Hogarth G, Wilton-Ely JDET. Multimetallic Complexes Based on a Diphosphine-Dithiocarbamate “Janus” Ligand. Inorg Chem 2015; 54:4222-30. [DOI: 10.1021/ic5028527] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Rebecca Sherwood
- Department of Chemistry, Imperial College London, South Kensington Campus, London SW7 2AZ, U.K
| | - Ferran Gonzàlez de Rivera
- Department of Chemistry, Imperial College London, South Kensington Campus, London SW7 2AZ, U.K
- Departament de Química
Inorgànica, Universitat de Barcelona, Martí Franquès 1-11, 08028, Barcelona, Spain
| | - Jane Hui Wan
- Department of Chemistry, Imperial College London, South Kensington Campus, London SW7 2AZ, U.K
| | - Qi Zhang
- Hainan Provincial Key Laboratory of Fine Chemicals, Hainan University, Haikou, Hainan 570228, China
| | - Andrew J. P. White
- Department of Chemistry, Imperial College London, South Kensington Campus, London SW7 2AZ, U.K
| | - Oriol Rossell
- Departament de Química
Inorgànica, Universitat de Barcelona, Martí Franquès 1-11, 08028, Barcelona, Spain
| | - Graeme Hogarth
- Department of Chemistry, King’s College London, Britannia House, 7 Trinity Street, London SE1 1DB, U.K
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22
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Boulay A, Deraeve C, Vander Elst L, Leygue N, Maury O, Laurent S, Muller RN, Mestre-Voegtlé B, Picard C. Terpyridine-Based Heteroditopic Ligand for RuIILn3III Metallostar Architectures (Ln = Gd, Eu, Nd, Yb) with MRI/Optical or Dual-Optical Responses. Inorg Chem 2015; 54:1414-25. [DOI: 10.1021/ic502342x] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Alexandre Boulay
- CNRS, Laboratoire de Synthèse et Physico-Chimie de Molécules d’Intérêt Biologique, SPCMIB, UMR-5068, 118 Route de Narbonne, F-31062 Toulouse cedex 9, France
- Université de Toulouse, UPS, Laboratoire de Synthèse et Physico-Chimie de Molécules d’Intérêt Biologique, SPCMIB, 118 route de Narbonne, F-31062 Toulouse cedex 9, France
| | - Céline Deraeve
- CNRS, Laboratoire de Synthèse et Physico-Chimie de Molécules d’Intérêt Biologique, SPCMIB, UMR-5068, 118 Route de Narbonne, F-31062 Toulouse cedex 9, France
- Université de Toulouse, UPS, Laboratoire de Synthèse et Physico-Chimie de Molécules d’Intérêt Biologique, SPCMIB, 118 route de Narbonne, F-31062 Toulouse cedex 9, France
| | - Luce Vander Elst
- NMR
and Molecular Imaging Laboratory, Department of General, Organic and
Biomedical Chemistry, University of Mons, 23 Place du Parc, B-7000 Mons, Belgium
- Center for Microscopy and Molecular Imaging (CMMI), Rue Adrienne Bolland, 8, B-6041 Gosselies, Belgium
| | - Nadine Leygue
- CNRS, Laboratoire de Synthèse et Physico-Chimie de Molécules d’Intérêt Biologique, SPCMIB, UMR-5068, 118 Route de Narbonne, F-31062 Toulouse cedex 9, France
- Université de Toulouse, UPS, Laboratoire de Synthèse et Physico-Chimie de Molécules d’Intérêt Biologique, SPCMIB, 118 route de Narbonne, F-31062 Toulouse cedex 9, France
| | - Olivier Maury
- Université de Lyon 1, Laboratoire de Chimie de l’ENS Lyon, CNRS UMR 5182, 46 allée d’Italie, 69364 Lyon, France
| | - Sophie Laurent
- NMR
and Molecular Imaging Laboratory, Department of General, Organic and
Biomedical Chemistry, University of Mons, 23 Place du Parc, B-7000 Mons, Belgium
- Center for Microscopy and Molecular Imaging (CMMI), Rue Adrienne Bolland, 8, B-6041 Gosselies, Belgium
| | - Robert N. Muller
- NMR
and Molecular Imaging Laboratory, Department of General, Organic and
Biomedical Chemistry, University of Mons, 23 Place du Parc, B-7000 Mons, Belgium
- Center for Microscopy and Molecular Imaging (CMMI), Rue Adrienne Bolland, 8, B-6041 Gosselies, Belgium
| | - Béatrice Mestre-Voegtlé
- CNRS, Laboratoire de Synthèse et Physico-Chimie de Molécules d’Intérêt Biologique, SPCMIB, UMR-5068, 118 Route de Narbonne, F-31062 Toulouse cedex 9, France
- Université de Toulouse, UPS, Laboratoire de Synthèse et Physico-Chimie de Molécules d’Intérêt Biologique, SPCMIB, 118 route de Narbonne, F-31062 Toulouse cedex 9, France
| | - Claude Picard
- CNRS, Laboratoire de Synthèse et Physico-Chimie de Molécules d’Intérêt Biologique, SPCMIB, UMR-5068, 118 Route de Narbonne, F-31062 Toulouse cedex 9, France
- Université de Toulouse, UPS, Laboratoire de Synthèse et Physico-Chimie de Molécules d’Intérêt Biologique, SPCMIB, 118 route de Narbonne, F-31062 Toulouse cedex 9, France
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23
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Toscani A, Heliövaara EK, Hena JB, White AJP, Wilton-Ely JDET. Multimetallic Alkenyl Complexes Bearing Macrocyclic Dithiocarbamate Ligands. Organometallics 2015. [DOI: 10.1021/om5011269] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Anita Toscani
- Department of Chemistry, Imperial College London, South Kensington Campus, London SW7 2AZ, U.K
| | - Eeva K. Heliövaara
- Department of Chemistry, Imperial College London, South Kensington Campus, London SW7 2AZ, U.K
| | - Jubeda B. Hena
- Department of Chemistry, Imperial College London, South Kensington Campus, London SW7 2AZ, U.K
| | - Andrew J. P. White
- Department of Chemistry, Imperial College London, South Kensington Campus, London SW7 2AZ, U.K
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24
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Rivas C, Stasiuk GJ, Sae-Heng M, J. Long N. Towards understanding the design of dual-modal MR/fluorescent probes to sense zinc ions. Dalton Trans 2015; 44:4976-85. [DOI: 10.1039/c4dt02981j] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A series of new gadolinium complexes have been synthesised to test the design of dual-modal probes that can display a change in fluorescence or relaxivity response upon zinc binding. By an iterative change in parameters of the probes, the compounds give insight into the design protocols required for successful imaging of zinc ions.
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Affiliation(s)
- Charlotte Rivas
- Department of Chemistry
- Imperial College London
- South Kensington Campus
- London
- UK
| | - Graeme J. Stasiuk
- Department of Chemistry
- Imperial College London
- South Kensington Campus
- London
- UK
| | - Myra Sae-Heng
- Department of Chemistry
- Imperial College London
- South Kensington Campus
- London
- UK
| | - Nicholas J. Long
- Department of Chemistry
- Imperial College London
- South Kensington Campus
- London
- UK
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25
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Hitomi Y, Aoki K, Miyachi R, Ohyama J, Kodera M, Tanaka T, Sugihara F. Gold Nanoparticles Coated with Manganese–Porphyrin That Effectively Shorten the Longitudinal Relaxation Time of Water Molecules Depending on the Particle Size. CHEM LETT 2014. [DOI: 10.1246/cl.140812] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Yutaka Hitomi
- Department of Molecular Chemistry and Biochemistry, Doshisha University
| | - Kazuki Aoki
- Department of Molecular Chemistry and Biochemistry, Doshisha University
| | - Ryosuke Miyachi
- Department of Molecular Chemistry and Biochemistry, Doshisha University
| | - Junya Ohyama
- Graduate School of Engineering, Nagoya University
- Elements Strategy Initiative for Catalysts and Batteries (ESICB), Kyoto University
| | - Masahito Kodera
- Department of Molecular Chemistry and Biochemistry, Doshisha University
| | - Tsunehiro Tanaka
- Elements Strategy Initiative for Catalysts and Batteries (ESICB), Kyoto University
- Department of Molecular Engineering, Kyoto University
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26
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27
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Hurtubise VL, McArdle JM, Naeem S, Toscani A, White AJP, Long NJ, Wilton-Ely JDET. Multimetallic Complexes and Functionalized Nanoparticles Based on Unsymmetrical Dithiocarbamate Ligands with Allyl and Propargyl Functionality. Inorg Chem 2014; 53:11740-8. [DOI: 10.1021/ic502015c] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Venesia L. Hurtubise
- Department of Chemistry, Imperial College London, South Kensington Campus, London SW7 2AZ, United Kingdom
| | - James M. McArdle
- Department of Chemistry, Imperial College London, South Kensington Campus, London SW7 2AZ, United Kingdom
| | - Saira Naeem
- Department of Chemistry, Imperial College London, South Kensington Campus, London SW7 2AZ, United Kingdom
| | - Anita Toscani
- Department of Chemistry, Imperial College London, South Kensington Campus, London SW7 2AZ, United Kingdom
| | - Andrew J. P. White
- Department of Chemistry, Imperial College London, South Kensington Campus, London SW7 2AZ, United Kingdom
| | - Nicholas J. Long
- Department of Chemistry, Imperial College London, South Kensington Campus, London SW7 2AZ, United Kingdom
| | - James D. E. T. Wilton-Ely
- Department of Chemistry, Imperial College London, South Kensington Campus, London SW7 2AZ, United Kingdom
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28
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Lewis DJ, Deshmukh P, Tedstone AA, Tuna F, O'Brien P. On the interaction of copper(II) with disulfiram. Chem Commun (Camb) 2014; 50:13334-7. [PMID: 25233190 DOI: 10.1039/c4cc04767b] [Citation(s) in RCA: 83] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
In combination with copper(II) ions, disulfiram (DSF) has been reported to be a potentially potent anticancer agent based on in vitro results. The interaction of DSF with copper(II) chloride in solution has been studied using a range of spectroscopic techniques. There is strong evidence for the rapid formation of the bis(N,N-diethyl dithiocarbamato)copper(II) complex in situ. Kinetic experiments were used to determine rate laws for the reaction that give insight into the mechanism of the process which may help to explain the observed in vitro cytotoxicity.
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Affiliation(s)
- David J Lewis
- School of Chemistry, University of Manchester, Oxford Road, M13 9PL, UK. Paul.O'
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