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Darwesh AMF, Imberti C, Bartnicka JJ, Al-Salemee F, Blower JE, Rigby A, Bordoloi J, Griffiths A, Ma MT, Blower PJ. In Vivo Trafficking of the Anticancer Drug Tris(8-Quinolinolato) Gallium (III) (KP46) by Gallium-68/67 PET/SPECT Imaging. Molecules 2023; 28:7217. [PMID: 37894695 PMCID: PMC10609081 DOI: 10.3390/molecules28207217] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2023] [Revised: 10/19/2023] [Accepted: 10/20/2023] [Indexed: 10/29/2023] Open
Abstract
KP46 (tris(hydroxyquinolinato)gallium(III)) is an experimental, orally administered anticancer drug. Its absorption, delivery to tumours, and mode of action are poorly understood. We aimed to gain insight into these issues using gallium-67 and gallium-68 as radiotracers with SPECT and PET imaging in mice. [67Ga]KP46 and [68Ga]KP46, compared with [68Ga]gallium acetate, were used for logP measurements, in vitro cell uptake studies in A375 melanoma cells, and in vivo imaging in mice bearing A375 tumour xenografts up to 48 h after intravenous (tracer level) and oral (tracer and bulk) administration. 68Ga was more efficiently accumulated in A375 cells in vitro when presented as [68Ga]KP46 than as [68Ga]gallium acetate, but the reverse was observed when intravenously administered in vivo. After oral administration of [68/67Ga]KP46, absorption of 68Ga and 67Ga from the GI tract and delivery to tumours were poor, with the majority excreted in faeces. By 48 h, low but measurable amounts were accumulated in tumours. The distribution in tissues of absorbed radiogallium and octanol extraction of tissues suggested trafficking as free gallium rather than as KP46. We conclude that KP46 likely acts as a slow releaser of gallium ions which are inefficiently absorbed from the GI tract and trafficked to tissues, including tumour and bone.
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Affiliation(s)
- Afnan M. F. Darwesh
- College London, School of Biomedical Engineering and Imaging Sciences, St. Thomas’ Hospital, London SE1 7EH, UK (F.A.-S.); (A.R.); (M.T.M.)
- Department of Radiologic Sciences, Faculty of Applied Medical Sciences, King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - Cinzia Imberti
- College London, School of Biomedical Engineering and Imaging Sciences, St. Thomas’ Hospital, London SE1 7EH, UK (F.A.-S.); (A.R.); (M.T.M.)
| | - Joanna J. Bartnicka
- College London, School of Biomedical Engineering and Imaging Sciences, St. Thomas’ Hospital, London SE1 7EH, UK (F.A.-S.); (A.R.); (M.T.M.)
| | - Fahad Al-Salemee
- College London, School of Biomedical Engineering and Imaging Sciences, St. Thomas’ Hospital, London SE1 7EH, UK (F.A.-S.); (A.R.); (M.T.M.)
| | - Julia E. Blower
- College London, School of Biomedical Engineering and Imaging Sciences, St. Thomas’ Hospital, London SE1 7EH, UK (F.A.-S.); (A.R.); (M.T.M.)
| | - Alex Rigby
- College London, School of Biomedical Engineering and Imaging Sciences, St. Thomas’ Hospital, London SE1 7EH, UK (F.A.-S.); (A.R.); (M.T.M.)
| | - Jayanta Bordoloi
- College London, School of Biomedical Engineering and Imaging Sciences, St. Thomas’ Hospital, London SE1 7EH, UK (F.A.-S.); (A.R.); (M.T.M.)
| | - Alex Griffiths
- London Metallomics Facility, King’s College London, London SE1 9NH, UK
| | - Michelle T. Ma
- College London, School of Biomedical Engineering and Imaging Sciences, St. Thomas’ Hospital, London SE1 7EH, UK (F.A.-S.); (A.R.); (M.T.M.)
| | - Philip J. Blower
- College London, School of Biomedical Engineering and Imaging Sciences, St. Thomas’ Hospital, London SE1 7EH, UK (F.A.-S.); (A.R.); (M.T.M.)
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Clases D, Gonzalez de Vega R. Facets of ICP-MS and their potential in the medical sciences-Part 1: fundamentals, stand-alone and hyphenated techniques. Anal Bioanal Chem 2022; 414:7337-7361. [PMID: 36028724 PMCID: PMC9482897 DOI: 10.1007/s00216-022-04259-1] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2022] [Revised: 07/26/2022] [Accepted: 07/29/2022] [Indexed: 12/02/2022]
Abstract
Since its inception in the early 80s, inductively coupled plasma-mass spectrometry has developed to the method of choice for the analysis of elements in complex biological systems. High sensitivity paired with isotopic selectivity and a vast dynamic range endorsed ICP-MS for the inquiry of metals in the context of biomedical questions. In a stand-alone configuration, it has optimal qualities for the biomonitoring of major, trace and toxicologically relevant elements and may further be employed for the characterisation of disrupted metabolic pathways in the context of diverse pathologies. The on-line coupling to laser ablation (LA) and chromatography expanded the scope and application range of ICP-MS and set benchmarks for accurate and quantitative speciation analysis and element bioimaging. Furthermore, isotopic analysis provided new avenues to reveal an altered metabolism, for the application of tracers and for calibration approaches. In the last two decades, the scope of ICP-MS was further expanded and inspired by the introduction of new instrumentation and methodologies including novel and improved hardware as well as immunochemical methods. These additions caused a paradigm shift for the biomedical application of ICP-MS and its impact in the medical sciences and enabled the analysis of individual cells, their microenvironment, nanomaterials considered for medical applications, analysis of biomolecules and the design of novel bioassays. These new facets are gradually recognised in the medical communities and several clinical trials are underway. Altogether, ICP-MS emerged as an extremely versatile technique with a vast potential to provide novel insights and complementary perspectives and to push the limits in the medical disciplines. This review will introduce the different facets of ICP-MS and will be divided into two parts. The first part will cover instrumental basics, technological advances, and fundamental considerations as well as traditional and current applications of ICP-MS and its hyphenated techniques in the context of biomonitoring, bioimaging and elemental speciation. The second part will build on this fundament and describe more recent directions with an emphasis on nanomedicine, immunochemistry, mass cytometry and novel bioassays.
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Affiliation(s)
- David Clases
- Nano Mirco LAB, Institute of Chemistry, University of Graz, Graz, Austria.
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Porphyrins as Chelating Agents for Molecular Imaging in Nuclear Medicine. Molecules 2022; 27:molecules27103311. [PMID: 35630788 PMCID: PMC9148099 DOI: 10.3390/molecules27103311] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2022] [Revised: 05/18/2022] [Accepted: 05/19/2022] [Indexed: 12/04/2022] Open
Abstract
Porphyrin ligands, showing a significant affinity for cancer cells, also have the ability to chelate metallic radioisotopes to form potential diagnostic radiopharmaceuticals. They can be applied in single-photon emission computed tomography (SPECT) and positron emission tomography (PET) to evaluate metabolic changes in the human body for tumor diagnostics. The aim of this paper is to present a short overview of the main metallic radionuclides complexed by porphyrin ligands and used in these techniques. These chelation reactions are discussed in terms of the complexation conditions and kinetics and the complex stability.
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Mlčochová H, Michalcová L, Glatz Z. Extending the application potential of capillary electrophoresis/frontal analysis for drug‐plasma protein studies by combining it with mass spectrometry detection. Electrophoresis 2022; 43:955-963. [DOI: 10.1002/elps.202100301] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2021] [Revised: 12/30/2021] [Accepted: 01/03/2022] [Indexed: 11/09/2022]
Affiliation(s)
- Hana Mlčochová
- Department of Biochemistry Faculty of Science Masaryk University Brno Czech Republic
| | - Lenka Michalcová
- Department of Biochemistry Faculty of Science Masaryk University Brno Czech Republic
| | - Zdeněk Glatz
- Department of Biochemistry Faculty of Science Masaryk University Brno Czech Republic
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Parsekar SU, Velankanni P, Sridhar S, Haldar P, Mate NA, Banerjee A, Sudhadevi Antharjanam PK, Koley AP, Kumar M. Protein binding studies with human serum albumin, molecular docking and in vitro cytotoxicity studies using HeLa cervical carcinoma cells of Cu(ii)/Zn(ii) complexes containing a carbohydrazone ligand. Dalton Trans 2020; 49:2947-2965. [PMID: 32073070 DOI: 10.1039/c9dt04656a] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
The interaction of two binuclear mixed ligand Cu(ii) complexes [Cu(o-phen)LCu(OAc)] (1) and [Cu(o-phen)LCu(o-phen)](OAc) (2) (H3L = o-HOC6H4C(H)[double bond, length as m-dash]N-NH-C(OH)[double bond, length as m-dash]N-N[double bond, length as m-dash]C(H)-C6H4OH-o) and a new mononuclear Zn(ii) complex [Zn(HL)(o-phen)(H2O)](OAc)·H2O (3) (H2L = o-HOC6H4-C(H)[double bond, length as m-dash]N-NH-C([double bond, length as m-dash]O)-NH-N[double bond, length as m-dash]C(H)-C6H4OH-o, o-phen = 1,10-phenanthroline, and OAc = CH3COO-) with human serum albumin (HSA) was studied using fluorescence quenching, synchronous and 3D fluorescence measurements and UV-vis spectroscopy. 3D fluorescence studies showed that the HSA structure was altered at the secondary and tertiary levels upon binding with the complexes. This was further supported by the electronic absorption spectral studies of HSA in the absence and presence of the compounds. The average binding distance (r) between HSA and the complexes was obtained by Förster's resonance energy transfer theory. Complex 3 was structurally characterized by X-ray crystallography. Molecular docking studies indicated that all three complexes primarily bind to HSA in subdomain IIA with amino acid residues such as Arg218 and Lys199 which are located at the entrance of Sudlow's site I. The in vitro cytotoxicities of complexes 1-3 against HeLa cells showed promising anticancer activity (IC50 = 3.5, 3.9 and 16.9 μM for 1, 2 and 3, respectively). Live cell time lapse imaging for 1 was done to capture the dynamic behavior of the cells upon treatment with the complex. Cell cycle analysis by flow cytometry with HeLa cells indicated that 1 and 2 induced cell cycle arrest in the G2/M phase while 3 induced arrest in the G0/G1 phase leading to cell death. Compounds 1 and 2 but not 3 induced apoptosis through the mitochondrial pathway as suggested from the relative p53, caspase3 and bcl2 mRNA levels measured by real-time quantitative PCR analysis.
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Affiliation(s)
- Sidhali U Parsekar
- Department of Chemical Engineering, Birla Institute of Technology and Science-Pilani, K. K. Birla Goa Campus, Zuarinagar, Goa 403726, India.
| | - Priyanka Velankanni
- Department of Chemical Engineering, Birla Institute of Technology and Science-Pilani, K. K. Birla Goa Campus, Zuarinagar, Goa 403726, India.
| | - Shruti Sridhar
- Department of Chemical Engineering, Birla Institute of Technology and Science-Pilani, K. K. Birla Goa Campus, Zuarinagar, Goa 403726, India. and Department of Biological Sciences, Birla Institute of Technology and Science-Pilani, K. K. Birla Goa Campus, Goa 403 726, India
| | - Paramita Haldar
- Department of Chemical Engineering, Birla Institute of Technology and Science-Pilani, K. K. Birla Goa Campus, Zuarinagar, Goa 403726, India.
| | - Nayan A Mate
- Department of Biological Sciences, Birla Institute of Technology and Science-Pilani, K. K. Birla Goa Campus, Goa 403 726, India
| | - Arnab Banerjee
- Department of Biological Sciences, Birla Institute of Technology and Science-Pilani, K. K. Birla Goa Campus, Goa 403 726, India
| | - P K Sudhadevi Antharjanam
- Sophisticated Analytical Instrument Facility, Indian Institute of Technology-Madras, Chennai 600 036, India
| | - Aditya P Koley
- Department of Chemistry, Birla Institute of Technology and Science-Pilani, K.K. Birla Goa Campus, Zuarinagar, Goa 403 726, India.
| | - Manjuri Kumar
- Department of Chemical Engineering, Birla Institute of Technology and Science-Pilani, K. K. Birla Goa Campus, Zuarinagar, Goa 403726, India.
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Bomhard EM. The toxicology of gallium oxide in comparison with gallium arsenide and indium oxide. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2020; 80:103437. [PMID: 32565349 DOI: 10.1016/j.etap.2020.103437] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/26/2020] [Revised: 06/15/2020] [Accepted: 06/17/2020] [Indexed: 06/11/2023]
Abstract
Gallium arsenide (GaAs) and indium oxide (In2O3) are used in electronic industries at high and increasing tonnages since decades. Gallium oxide (Ga2O3) is an emerging wide-bandgap transparent conductive oxide with as yet little industrial use. Since GaAs has received critical attention due to the arsenic ion, it seemed reasonable to compare its toxicology with the respective endpoints of Ga2O3 and In2O3 toxicology in order to find out if and to what extent arsenic contributes. In addition, the toxicology of Ga2O3 has not yet been adequately reviewed, Therefore, this review provides the first evaluation of all available toxicity data on Ga2O3. The acute toxicity of all three compounds is rather low. Subchronic inhalation studies in rats and mice revealed persistent pulmonary alveolar proteinosis (PAP) and/or alveolar histiocytic infiltrates down to the lowest tested concentration in rats and mice, i.e. 0.16 mg Ga2O3/m3. These are also the predominant effects after GaAs and In2O3 exposure at similarly low levels, i.e. 0.1 mg/m3 each. Subchronic Ga2O3 exposure caused a minimal microcytic anemia with erythrocytosis in rats (at 6.4 mg/m3 and greater) and mice (at 32 and 64 mg/m3), a decrease in epididymal sperm motility and concentration as well as testicular degeneration at 64 mg/m3. At comparable concentrations the hematological effects and male fertility of GaAs were much stronger. The stronger effects of GaAs are due to its better solubility and presumed higher bioavailability. The database for In2O3 is too small and subchronic testing was at very low levels to allow conclusive judgements if blood/blood forming or degrading and male fertility organs/tissues would also be targets.
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Affiliation(s)
- Ernst M Bomhard
- REACh ChemConsult GmbH, Strehlener Str. 14, D-01069 Dresden, Germany.
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7
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Hanif M, Hartinger CG. From the hypothesis-driven development of organometallic anticancer drugs to new methods in mode of action studies. Med Chem 2020. [DOI: 10.1016/bs.adioch.2019.10.007] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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Comparative solution studies and cytotoxicity of gallium(III) and iron(III) complexes of 3-hydroxy-2(1H)-pyridinones. Polyhedron 2019. [DOI: 10.1016/j.poly.2019.04.010] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Dömötör O, Enyedy ÉA. Binding mechanisms of half-sandwich Rh(III) and Ru(II) arene complexes on human serum albumin: a comparative study. J Biol Inorg Chem 2019; 24:703-719. [PMID: 31300922 PMCID: PMC6682546 DOI: 10.1007/s00775-019-01683-0] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2019] [Accepted: 06/27/2019] [Indexed: 02/05/2023]
Abstract
Abstract Various half-sandwich ruthenium(II) arene complexes and rhodium(III) arene complexes have been intensively investigated due to their prominent anticancer activity. The interaction of the organometallic complexes of Ru(η6-p-cymene) and Rh(η5-C5Me5) with human serum albumin (HSA) was studied in detail by a combination of various methods such as ultrafiltration, capillary electrophoresis, 1H NMR spectroscopy, fluorometry and UV–visible spectrophotometry in the presence of 100 mM chloride ions. Binding characteristics of the organometallic ions and their complexes with deferiprone, 2-picolinic acid, maltol, 6-methyl-2-picolinic acid and 2-quinaldic acid were evaluated. Kinetic aspects and reversibility of the albumin binding are also discussed. The effect of low-molecular-mass blood components on the protein binding was studied in addition to the interaction of organorhodium complexes with cell culture medium components. The organometallic ions were found to bind to HSA to a high extent via a coordination bond. Release of the bound metal ions was kinetically hindered and could not be induced by the denaturation of the protein. Binding of the Ru(η6-p-cymene) triaqua cation was much slower (ca. 24 h) compared to the rhodium congener (few min), while their complexes interacted with the protein relatively fast (1–2 h). The studied complexes were bound to HSA coordinatively. The highly stable and kinetically inert 2-picolinate Ru(η6-p-cymene) complex bound in an associative manner preserving its original entity, while lower stability complexes decomposed partly or completely upon binding to HSA. Fast, non-specific and high-affinity binding of the complexes on HSA highlights their coordinative interaction with various types of proteins possibly decreasing effective drug concentration. Graphic abstract ![]()
Electronic supplementary material The online version of this article (10.1007/s00775-019-01683-0) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Orsolya Dömötör
- Department of Inorganic and Analytical Chemistry, Interdisciplinary Excellence Centre, University of Szeged, Dóm tér 7, 6720, Szeged, Hungary.
| | - Éva A Enyedy
- Department of Inorganic and Analytical Chemistry, Interdisciplinary Excellence Centre, University of Szeged, Dóm tér 7, 6720, Szeged, Hungary.
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Nevídalová H, Michalcová L, Glatz Z. Capillary electrophoresis-based approaches for the study of affinity interactions combined with various sensitive and nontraditional detection techniques. Electrophoresis 2019; 40:625-642. [PMID: 30600537 DOI: 10.1002/elps.201800367] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2018] [Revised: 12/20/2018] [Accepted: 12/20/2018] [Indexed: 12/17/2022]
Abstract
Nearly all processes in living organisms are controlled and regulated by the synergy of many biomolecule interactions involving proteins, peptides, nucleic acids, nucleotides, saccharides, and small molecular weight ligands. There is growing interest in understanding them, not only for the purposes of interactomics as an essential part of system biology, but also in their further elucidation in disease pathology, diagnostics, and treatment. The necessity of detailed investigation of these interactions leads to the requirement of laboratory methods characterized by high efficiency and sensitivity. As a result, many instrumental approaches differing in their fundamental principles have been developed, including those based on capillary electrophoresis. Although capillary electrophoresis offers numerous advantages for such studies, it still has one serious limitation, its poor concentration sensitivity with the most commonly used detection method-ultraviolet-visible spectrometry. However, coupling capillary electrophoresis with a more sensitive detector fulfils the above-mentioned requirement. In this review, capillary electrophoresis combined with fluorescence, mass spectrometry, and several nontraditional detection techniques in affinity interaction studies are summarized and discussed, together with the possibility of conducting these measurements in microchip format.
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Affiliation(s)
- Hana Nevídalová
- Department of Biochemistry, Faculty of Science, Masaryk University, Brno, Czech Republic
| | - Lenka Michalcová
- Department of Biochemistry, Faculty of Science, Masaryk University, Brno, Czech Republic
| | - Zdeněk Glatz
- Department of Biochemistry, Faculty of Science, Masaryk University, Brno, Czech Republic
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Holtkamp HU, Morrow SJ, Kubanik M, Hartinger CG. Hyphenation of capillary electrophoresis to inductively coupled plasma mass spectrometry with a modified coaxial sheath-flow interface. J Chromatogr A 2018; 1561:76-82. [PMID: 29798804 DOI: 10.1016/j.chroma.2018.05.036] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2018] [Revised: 05/14/2018] [Accepted: 05/15/2018] [Indexed: 12/23/2022]
Abstract
Capillary electrophoretic analyses benefit significantly from hyphenation to mass spectrometric techniques. While the coupling to ESI-MS is routinely performed, for example by using a coaxial sheath-flow interface, hyphenating it to inductively coupled plasma mass spectrometry is more technically challenging. We use a commercially available coaxial sheath-flow interface (CSFI) and a simple PTFE-based end-cap for easy, inexpensive CE-ICP-MS hyphenation with improved sensitivity and analytical performance compared to commercially available interfaces. We have optimized key nebulizer parameters such as capillary position, sheath liquid flow rate, and carrier gas flow rate, and compared the CSFI with a commercially available interface. In a set of proof-of-principle experiments employing the anticancer agent cisplatin it was demonstrated that the signal to noise response and sensitivity were considerably improved leading to detection limits for 195Pt of 0.08 μM.
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Affiliation(s)
- Hannah U Holtkamp
- University of Auckland, School of Chemical Sciences, Private Bag 92019, Auckland 1142, New Zealand(1)
| | - Stuart J Morrow
- University of Auckland, School of Chemical Sciences, Private Bag 92019, Auckland 1142, New Zealand(1)
| | - Mario Kubanik
- University of Auckland, School of Chemical Sciences, Private Bag 92019, Auckland 1142, New Zealand(1)
| | - Christian G Hartinger
- University of Auckland, School of Chemical Sciences, Private Bag 92019, Auckland 1142, New Zealand(1).
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Holtkamp HU, Movassaghi S, Morrow SJ, Kubanik M, Hartinger CG. Metallomic study on the metabolism of RAPTA-C and cisplatin in cell culture medium and its impact on cell accumulation. Metallomics 2018; 10:455-462. [DOI: 10.1039/c8mt00024g] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The different extracellular speciation of cisplatin and the organoruthenium developmental anticancer agent RAPTA-C impacts the accumulation in cancer cells.
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Affiliation(s)
- Hannah U. Holtkamp
- School of Chemical Sciences
- University of Auckland
- Auckland 1142
- New Zealand
| | - Sanam Movassaghi
- School of Chemical Sciences
- University of Auckland
- Auckland 1142
- New Zealand
| | - Stuart J. Morrow
- School of Chemical Sciences
- University of Auckland
- Auckland 1142
- New Zealand
| | - Mario Kubanik
- School of Chemical Sciences
- University of Auckland
- Auckland 1142
- New Zealand
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13
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Holtkamp HU, Morrow SJ, Kubanik M, Hartinger CG. Cobalt complexes as internal standards for capillary zone electrophoresis–mass spectrometry studies in biological inorganic chemistry. J Biol Inorg Chem 2017; 22:789-798. [DOI: 10.1007/s00775-016-1426-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2016] [Accepted: 12/07/2016] [Indexed: 11/24/2022]
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14
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Beckford FA, Brock A, Gonzalez-Sarrías A, Seeram NP. Cytotoxic gallium complexes containing thiosemicarbazones derived from 9-anthraldehyde: Molecular docking with biomolecules. J Mol Struct 2016; 1121:156-166. [PMID: 27980346 DOI: 10.1016/j.molstruc.2016.05.075] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
We have synthesized a trio of gallium complexes bearing 9-anthraldehyde thiosemicarbazones. The complexes were assessed for their anticancer activity and their biophysical reactivity was also investigated. The three complexes displayed good cytotoxic profiles against two human colon cancer cell lines, HCT-116 and Caco-2. The IC50 ranged from 4.7 - 44.1 μM with the complex having an unsubstituted amino group on the thiosemicarbazone being the most active. This particular complex also showed a high therapeutic index. All three complexes bind strongly to DNA via intercalation with binding constants ranging from 7.46 × 104 M-1 to 3.25 × 105 M-1. The strength of the binding cannot be directly related to the level of anticancer activity. The complexes also bind strongly to human serum albumin with binding constants on the order of 104 - 105 M-1 as well. The complexes act as chemical nucleases as evidenced by their ability to cleave pBR322 plasmid DNA. The binding constants along with the cleavage results may suggest that the extent of DNA interaction is not directly correlated with anticancer activity. The results of docking studies with DNA, ribonucleotide reductase and human serum albumin, however showed that the complex with the best biological activity had the largest binding constant to DNA.
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Affiliation(s)
| | - Alyssa Brock
- Science Division, Lyon College, Batesville, AR 72501, USA
| | - Antonio Gonzalez-Sarrías
- Department of Biomedical and Pharmaceutical Sciences, College of Pharmacy, University of Rhode Island, Kingston, RI 02881, USA
| | - Navindra P Seeram
- Department of Biomedical and Pharmaceutical Sciences, College of Pharmacy, University of Rhode Island, Kingston, RI 02881, USA
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Huynh TNS, Bourgeois D, Basset C, Vidaud C, Hagège A. Assessment of CE-ICP/MS hyphenation for the study of uranyl/protein interactions. Electrophoresis 2015; 36:1374-82. [PMID: 25630637 DOI: 10.1002/elps.201400471] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2014] [Revised: 12/27/2014] [Accepted: 01/11/2015] [Indexed: 11/06/2022]
Abstract
Identification of uranyl transport proteins is key to develop efficient detoxification approaches. Therefore, analytical approaches have to be developed to cope with the complexity of biological media and allow the analysis of metal speciation. CE-ICP/MS was used to combine the less-intrusive character and high separation efficiency of CE with the sensitive detection of ICP/MS. The method was based on the incubation of samples with uranyl prior to the separation. Electrophoretic buffers were compared to select a 10 mM Tris to 15 mM NaCl buffer, which enabled analyses at pH 7.4 and limited dissociation. This method was applied to the analysis of a serum. Two main fractions were observed. By comparison with synthetic mixtures of proteins, the first one was attributed to fetuin and in a lesser extent to HSA, and the second one to uranyl unbound to proteins. The analysis showed that fetuin was likely to be the main target of uranyl. CE-ICP/MS was also used to investigate the behavior of the fetuin-uranyl complex, in the presence of carbonate, an abundant complexing agent of uranyl in blood. This method enabled association constants determination, suggesting the occurrence of both FETUA(UO2(2+)) and FETUA(UO2(2+))(CO3(2-)) complexes, depending on the carbonate concentration.
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Affiliation(s)
- Thi-Ngoc Suong Huynh
- CEA/DSV/iBEB/SBTN, Laboratoire d'Etude des Protéines Cibles, Bagnols sur Cèze Cedex, France
| | - Damien Bourgeois
- Institut de Chimie Séparative de Marcoule, Laboratoire de Chimie et Physico-chimie des Actinides, Bagnols-sur-Cèze cedex, France
| | - Christian Basset
- CEA/DSV/iBEB/SBTN, Laboratoire d'Etude des Protéines Cibles, Bagnols sur Cèze Cedex, France
| | - Claude Vidaud
- CEA/DSV/iBEB/SBTN, Laboratoire d'Etude des Protéines Cibles, Bagnols sur Cèze Cedex, France
| | - Agnès Hagège
- CEA/DSV/iBEB/SBTN, Laboratoire d'Etude des Protéines Cibles, Bagnols sur Cèze Cedex, France.,CNRS, UMR 7265, CEA/DSV/iBEB, St. Paul Les Durance, France
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16
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Interaction of the anticancer gallium(III) complexes of 8-hydroxyquinoline and maltol with human serum proteins. J Biol Inorg Chem 2015; 20:77-88. [PMID: 25398250 DOI: 10.1007/s00775-014-1211-9] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2014] [Accepted: 10/27/2014] [Indexed: 01/12/2023]
Abstract
Tris(8-quinolinolato)gallium(III) (KP46) and tris(maltolato)gallium(III) (GaM) are promising orally active antitumor metallodrugs currently undergoing clinical trials. Their interaction with human serum albumin (HSA) and transferrin (Tf) was studied in detail in aqueous solution by the combination of various methods such as spectrofluorometry, UV-vis spectrophotometry, (1)H and saturation transfer difference NMR spectroscopy, and ultrafiltration-UV-vis spectrophotometry. Binding data were evaluated quantitatively. Tf was found to replace the original ligand much less efficiently in KP46 than in GaM, whereas a significant noncovalent binding of KP46 with HSA (log K' = 4.04) retaining the coordination environment around gallium(III) was found. The interaction between HSA and KP46 was also confirmed by protein-complex modeling calculations. On the basis of the conditional stability constants, the distribution of gallium(III) in serum was computed and compared for these metallodrugs under physiological conditions, and revealed the prominent role of HSA in the case of KP46 and that of Tf for GaM.
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17
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Hagège A, Huynh TNS, Hébrant M. Separative techniques for metalloproteomics require balance between separation and perturbation. Trends Analyt Chem 2015. [DOI: 10.1016/j.trac.2014.08.013] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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18
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Ali I, Haque A, Wani WA, Saleem K, Al Za'abi M. Analyses of anticancer drugs by capillary electrophoresis: a review. Biomed Chromatogr 2013; 27:1296-311. [DOI: 10.1002/bmc.2953] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2013] [Revised: 05/07/2013] [Accepted: 05/07/2013] [Indexed: 12/19/2022]
Affiliation(s)
- Imran Ali
- Department of Chemistry; Jamia Millia Islamia (Central University); New Delhi; 110025; India
| | - Ashanul Haque
- Department of Chemistry; Jamia Millia Islamia (Central University); New Delhi; 110025; India
| | - Waseem A. Wani
- Department of Chemistry; Jamia Millia Islamia (Central University); New Delhi; 110025; India
| | - Kishwar Saleem
- Department of Chemistry; Jamia Millia Islamia (Central University); New Delhi; 110025; India
| | - Mohammed Al Za'abi
- Department of Pharmacology and Clinical Pharmacy, College of Medicine and Health Sciences; Sultan Qaboos University; Muscat; Sultanate of Oman
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19
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Metallomics for drug development: serum protein binding and analysis of an anticancer tris(8-quinolinolato)gallium(III) drug using inductively coupled plasma mass spectrometry. Anal Chim Acta 2013; 785:22-6. [PMID: 23764439 DOI: 10.1016/j.aca.2013.05.004] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2013] [Revised: 04/26/2013] [Accepted: 05/02/2013] [Indexed: 11/23/2022]
Abstract
The application of an inductively coupled plasma mass spectrometry (ICP-MS) assay for quantifying in vitro binding of a gallium-based anticancer drug, tris(8-quinolinolato)gallium(III), to serum albumin and transferrin and in human serum is described. The distribution of the drug between the protein-rich and protein-free fractions was assessed via ICP-MS measurement of total gallium in ultrafiltrates. Comparative kinetic studies revealed that the drug exhibits a different reactivity toward individual proteins. While the maximum possible binding to albumin (~10%) occurs practically immediately, interaction with transferrin has a step-like character and the equilibrium state (with more than 50% binding) is reached for about 48 h. Drug transformation into the bound form in serum, also very fast, results in almost quantitative binding (~95%). The relative affinity of protein-drug binding was characterized in terms of the association constants ranging from 10(3) to 10(4)M(-1). In order to further promote clinical testing of the gallium drug, the ICP-MS method was applied for direct quantification of gallium in human serum spiked with the drug. The detection limit for gallium was found to be as low as 20 ng L(-1). The repeatability was better than 8% (as RSD) and the achieved recoveries were in the range 99-103%.
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20
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Enyedy ÉA, Dömötör O, Varga E, Kiss T, Trondl R, Hartinger CG, Keppler BK. Comparative solution equilibrium studies of anticancer gallium(III) complexes of 8-hydroxyquinoline and hydroxy(thio)pyrone ligands. J Inorg Biochem 2012; 117:189-97. [DOI: 10.1016/j.jinorgbio.2012.08.005] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2012] [Revised: 08/16/2012] [Accepted: 08/17/2012] [Indexed: 11/26/2022]
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21
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22
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Anticancer metallodrug research analytically painting the "omics" picture--current developments and future trends. Anal Bioanal Chem 2012; 405:1791-808. [PMID: 23070042 DOI: 10.1007/s00216-012-6450-4] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2012] [Revised: 09/14/2012] [Accepted: 09/21/2012] [Indexed: 01/27/2023]
Abstract
Anticancer metallodrug development has for a long time been characterised by the similarity of new drug candidates to cisplatin and DNA as the primary target. Recent advances in bioanalytical techniques with high sensitivity and selectivity have revealed that metal-based drugs can undergo a wide range of biomolecular interactions beyond DNA and have generated interest in proteins as possible targets for metallodrugs. In fact, implementation of metallomics approaches that are able to reveal the fate of the compounds in biological systems can help to move drug development towards more targeted and rational design of novel metallodrugs. Additionally, proteomic screening and gene expression analysis can provide insight into physiological response to drug treatment and identify the reasons for drug resistance. Herein, we review selected applications which led to a better understanding of the mode of action of clinically established metal-based anticancer agents and novel metallodrug candidates.
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23
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Timerbaev AR. Element speciation analysis using capillary electrophoresis: twenty years of development and applications. Chem Rev 2012; 113:778-812. [PMID: 23057472 DOI: 10.1021/cr300199v] [Citation(s) in RCA: 66] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Andrei R Timerbaev
- Vernadsky Institute of Geochemistry and Analytical Chemistry, Russian Academy of Sciences, Kosygin Str. 19, 119991 Moscow, Russian Federation.
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24
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Bytzek AK, Hartinger CG. Capillary electrophoretic methods in the development of metal-based therapeutics and diagnostics: new methodology and applications. Electrophoresis 2012; 33:622-34. [PMID: 22451055 DOI: 10.1002/elps.201100402] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
In recent years, capillary electrophoresis (CE) has matured to a standard method in medicinal inorganic chemistry. More and more steps of the drug discovery process are followed by CE. However, not only the number of applications has steadily increased but also the variety of used methodology has significantly broadened and, as compared to a few years ago, a wider scope of separation modes and hyphenated systems has been used. Herein, a summary of the newly utilized CE methods and their applications in metallodrug research in the timeframe 2006-2011 is presented, following related reviews from 2003 and 2007 (Electrophoresis, 2003, 24, 2023-2037; Electrophoresis 2007, 28, 3436-3446). Areas covered include impurity profiling, quality control of pharmaceutical formulations, lipophilicity estimation, interactions between metallodrugs and proteins or nucleotides, and characterization and also quantification of metabolites in biological matrices and real-world samples.
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Affiliation(s)
- Anna K Bytzek
- Institute of Inorganic Chemistry, University of Vienna, Vienna, Austria
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25
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Hummer AA, Bartel C, Arion VB, Jakupec MA, Meyer-Klaucke W, Geraki T, Quinn PD, Mijovilovich A, Keppler BK, Rompel A. X-ray Absorption Spectroscopy of an Investigational Anticancer Gallium(III) Drug: Interaction with Serum Proteins, Elemental Distribution Pattern, and Coordination of the Compound in Tissue. J Med Chem 2012; 55:5601-13. [DOI: 10.1021/jm3005459] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Alfred A. Hummer
- Institut für
Biophysikalische
Chemie, Universität Wien, Althanstraße
14, 1090 Wien, Austria
| | - Caroline Bartel
- Institut für Anorganische
Chemie, Universität Wien, Währinger
Straße 42, 1090 Wien, Austria
| | - Vladimir B. Arion
- Institut für Anorganische
Chemie, Universität Wien, Währinger
Straße 42, 1090 Wien, Austria
| | - Michael A. Jakupec
- Institut für Anorganische
Chemie, Universität Wien, Währinger
Straße 42, 1090 Wien, Austria
| | - Wolfram Meyer-Klaucke
- European Molecular Biology Laboratory Hamburg, Notkestraße 85, 22603
Hamburg, Germany
| | - Tina Geraki
- Diamond Light Source, Harwell Campus, Didcot OX11 0DE,
United Kingdom
| | - Paul D. Quinn
- Diamond Light Source, Harwell Campus, Didcot OX11 0DE,
United Kingdom
| | - Ana Mijovilovich
- Inorganic
Chemistry and Catalysis
Group, Debye Institute for Nanomaterials Science, Utrecht University, Universiteitsweg 99, 3584 CG Utrecht, The
Netherlands
| | - Bernhard K. Keppler
- Institut für Anorganische
Chemie, Universität Wien, Währinger
Straße 42, 1090 Wien, Austria
| | - Annette Rompel
- Institut für
Biophysikalische
Chemie, Universität Wien, Althanstraße
14, 1090 Wien, Austria
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26
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Espada A, Molina-Martin M. Capillary electrophoresis and small molecule drug discovery: a perfect match? Drug Discov Today 2012; 17:396-404. [PMID: 22387356 DOI: 10.1016/j.drudis.2012.02.008] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2011] [Revised: 12/19/2011] [Accepted: 02/10/2012] [Indexed: 01/27/2023]
Abstract
Capillary electrophoresis (CE) is an analytical technique based on the separation of the analytes within a capillary owing to their different electrophoretic mobilities. It is widely used in pharmaceutical analyses owing to its versatility and high separation power. However, its penetration into the drug discovery scene has been relatively limited until recent years. Several factors have contributed to this low implementation, including the maturity of liquid chromatography, the scarcity of experienced CE practitioners, and certain limitations intrinsic to the technique. Recently, instrumental improvements and the growing demand for analytical information have lead to a continuously expanding range of routine electrophoretic applications throughout pharmaceutical discovery and development. In this article we review CE fundamentals, review well-established CE methodologies in drug discovery of small molecules and discuss trends that, in our opinion, might emerge in the coming years.
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Affiliation(s)
- Alfonso Espada
- Analytical Technologies Department, Centro de Investigación Lilly SA, Avda de la Industria 30, 28108-Alcobendas, Madrid, Spain
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27
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Kubáň P, Timerbaev AR. CE of inorganic species - A review of methodological advancements over 2009-2010. Electrophoresis 2011; 33:196-210. [DOI: 10.1002/elps.201100357] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2011] [Revised: 07/30/2011] [Accepted: 07/30/2011] [Indexed: 01/13/2023]
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28
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Timerbaev A, Pawlak K, Gabbiani C, Messori L. Recent progress in the application of analytical techniques to anticancer metallodrug proteomics. Trends Analyt Chem 2011. [DOI: 10.1016/j.trac.2011.03.007] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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29
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Kljun J, Bytzek AK, Kandioller W, Bartel C, Jakupec MA, Hartinger CG, Keppler BK, Turel I. Physicochemical Studies and Anticancer Potency of Ruthenium η-p-Cymene Complexes Containing Antibacterial Quinolones. Organometallics 2011; 30:2506-2512. [PMID: 21552495 PMCID: PMC3086571 DOI: 10.1021/om101180c] [Citation(s) in RCA: 100] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2010] [Indexed: 12/23/2022]
Abstract
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With the aim of exploring the anticancer properties of organometallic compounds with bioactive ligands, Ru(arene) compounds of the antibacterial quinolones nalidixic acid (2) and cinoxacin (3) were synthesized, and their physicochemical properties were compared to those of chlorido(η6-p-cymene)(ofloxacinato-κ2O,O)ruthenium(II) (1). All compounds undergo a rapid ligand exchange reaction from chlorido to aqua species. 2 and 3 are significantly more stable than 1 and undergo minor conversion to an unreactive [(cym)Ru(μ-OH)3Ru(cym)]+ species (cym = η6-p-cymene). In the presence of human serum albumin 1−3 form adducts with this transport protein within 20 min of incubation. With guanosine 5′-monophosphate (5′-GMP; as a simple model for reactions with DNA) very rapid reactions yielding adducts via its N7 atom were observed, illustrating that DNA is a possible target for this compound class. A moderate capacity of inhibiting tumor cell proliferation in vitro was observed for 1 in CH1 ovarian cancer cells, whereas 2 and 3 turned out to be inactive.
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30
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Determination of gallium originated from a gallium-based anticancer drug in human urine using ICP-MS. Anal Bioanal Chem 2011; 400:709-14. [DOI: 10.1007/s00216-011-4791-z] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2010] [Revised: 02/04/2011] [Accepted: 02/08/2011] [Indexed: 10/18/2022]
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31
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Kandioller W, Kurzwernhart A, Hanif M, Meier SM, Henke H, Keppler BK, Hartinger CG. Pyrone derivatives and metals: From natural products to metal-based drugs. J Organomet Chem 2011. [DOI: 10.1016/j.jorganchem.2010.11.010] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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32
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Pantůčková P, Gebauer P, Boček P, Křivánková L. Recent advances in CE-MS: Synergy of wet chemistry and instrumentation innovations. Electrophoresis 2010; 32:43-51. [PMID: 21171112 DOI: 10.1002/elps.201000382] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2010] [Revised: 08/17/2010] [Accepted: 08/17/2010] [Indexed: 01/29/2023]
Abstract
CE with MS detection is a hyphenated technique which greatly improves the ability of CE to deal with real samples, especially with those coming from biology and medicine, where the target analytes are present as trace amounts in very complex matrices. CE-MS is now almost a routine technique performed on commercially available instruments. It faces currently a tremendous development of the technique itself as well as of its wide application area. Great interest in CE-MS is reflected in the scientific literature by many original research articles and also by numerous reviews. The review presented here has a general scope and belongs to a series of regularly published reviews on the topic. It covers the literature from the last 2 years, since January 2008 till June 2010. It brings a critical selection of related literature sorted into groups reflecting the main topics of actual scientific interest: (i) innovations in CE-ESI-MS, (ii) use of alternative interfaces, and (iii) ways to enhance sensitivity. Special attention is paid to novel electrolyte systems amenable to CE-MS including nonvolatile BGEs, to advanced CE separation principles such as MEKC, MEEKC, chiral CE, and to the use of preconcentration techniques.
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Affiliation(s)
- Pavla Pantůčková
- Institute of Analytical Chemistry of the Academy of Sciences of the Czech Republic, Brno, Czech Republic
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33
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Haselberg R, de Jong GJ, Somsen GW. Capillary electrophoresis-mass spectrometry for the analysis of intact proteins 2007-2010. Electrophoresis 2010; 32:66-82. [PMID: 21171114 DOI: 10.1002/elps.201000364] [Citation(s) in RCA: 87] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2010] [Revised: 09/07/2010] [Accepted: 09/08/2010] [Indexed: 12/29/2022]
Abstract
CE coupled to MS has proven to be a powerful analytical tool for the characterization of intact proteins, as it combines the high separation efficiency of CE with the selectivity of MS. This review provides an overview of the development and application of CE-MS methods within the field of intact protein analysis as published between January 2007 and June 2010. Ongoing technological developments with respect to CE-MS interfacing, capillary coatings for CE-MS, coupling of CIEF with MS and chip-based CE-MS are treated. Furthermore, CE-MS of intact proteins involving ESI, MALDI and ICP ionization is outlined and overviews of the use of the various CE-MS methods are provided by tables. Representative examples illustrate the applicability of CE-MS for the characterization of proteins, including glycoproteins, biopharmaceuticals, protein-ligand complexes, biomarkers and dietary proteins. It is concluded that CE-MS is a valuable technique with high potential for intact protein analysis, providing useful information on protein identity and purity, including modifications and degradation products.
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Affiliation(s)
- Rob Haselberg
- Department of Biomedical Analysis, Utrecht University, TB Utrecht, The Netherlands.
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34
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Jonker N, Kool J, Irth H, Niessen WMA. Recent developments in protein-ligand affinity mass spectrometry. Anal Bioanal Chem 2010; 399:2669-81. [PMID: 21058031 PMCID: PMC3043251 DOI: 10.1007/s00216-010-4350-z] [Citation(s) in RCA: 74] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2010] [Revised: 10/16/2010] [Accepted: 10/17/2010] [Indexed: 11/27/2022]
Abstract
This review provides an overview of direct and indirect technologies to screen protein–ligand interactions with mass spectrometry. These technologies have as a key feature the selection or affinity purification of ligands in mixtures prior to detection. Specific fields of interest for these technologies are metabolic profiling of bioactive metabolites, natural extract screening, and the screening of libraries for bioactives, such as parallel synthesis libraries and small combichem libraries. The review addresses the principles of each of the methods discussed, with a focus on developments in recent years, and the applicability of the methods to lead generation and development in drug discovery. Schematic view of the principle of filtration based 96-well affinity selection MS binding assays ![]()
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Affiliation(s)
- Niels Jonker
- BioMolecular Analysis, Department of Chemistry and Pharmaceutical Sciences, Faculty of Sciences, VU University Amsterdam, The Netherlands
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35
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Bytzek AK, Reithofer MR, Galanski M, Groessl M, Keppler BK, Hartinger CG. The first example of MEEKC-ICP-MS coupling and its application for the analysis of anticancer platinum complexes. Electrophoresis 2010; 31:1144-1150. [PMID: 20349510 PMCID: PMC3512080 DOI: 10.1002/elps.200900522] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
MEEKC is a powerful electrodriven separation technique with many applications in different disciplines, including medicinal chemistry; however, up to now the coupling to highly sensitive and selective MS detectors was limited due to the ion suppressive effect of the commonly used surfactant SDS. Herein, the first example of the coupling of MEEKC to ICP-MS is presented and an MEEKC method for the separation of Pt(II) and Pt(IV) anticancer drugs and drug candidates was developed. Different compositions of microemulsions were evaluated and the data were compared with those collected with standard ultraviolet/visible (UV/vis) spectroscopy detection. The MEEKC-ICP-MS system was found to be more sensitive than MEEKC-UV/vis and the analysis of UV/vis silent compounds is now achievable. The migration behavior of the Pt(II) and Pt(IV) compounds under investigation is correlated to their different chemical structures.
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Affiliation(s)
- Anna K. Bytzek
- Institute of Inorganic Chemistry, University of Vienna, Waehringer Str. 42, A-1090 Vienna, Austria
| | - Michael R. Reithofer
- Institute of Inorganic Chemistry, University of Vienna, Waehringer Str. 42, A-1090 Vienna, Austria
| | - Markus Galanski
- Institute of Inorganic Chemistry, University of Vienna, Waehringer Str. 42, A-1090 Vienna, Austria
| | - Michael Groessl
- Institute of Inorganic Chemistry, University of Vienna, Waehringer Str. 42, A-1090 Vienna, Austria
| | - Bernhard K. Keppler
- Institute of Inorganic Chemistry, University of Vienna, Waehringer Str. 42, A-1090 Vienna, Austria
| | - Christian G. Hartinger
- Institute of Inorganic Chemistry, University of Vienna, Waehringer Str. 42, A-1090 Vienna, Austria
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36
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Groessl M, Terenghi M, Casini A, Elviri L, Lobinski R, Dyson PJ. Reactivity of anticancer metallodrugs with serum proteins: new insights from size exclusion chromatography-ICP-MS and ESI-MS. JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY 2010; 25:305-313. [PMID: 21151827 PMCID: PMC2999900 DOI: 10.1039/b922701f] [Citation(s) in RCA: 82] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
A method based on the coupling of high resolution size-exclusion liquid chromatography using a polymer stationary phase with inductively coupled plasma mass spectrometry was developed to study the interactions of two metallodrugs - cisplatin and RAPTA-T - with the serum proteins albumin and transferrin. In contrast to previous approaches, the technique allowed the total recovery of the metals from the column and was able to discriminate between the different species of the metallodrugs and their complexes with the proteins at femtomolar detection levels. Metal binding was found to be dependent on the protein concentration and on the incubation time of the sample. Cisplatin was found to bind the serum proteins to the same extent, whereas RAPTA-T showed marked preference for transferrin. The affinity of the ruthenium complex for holo-transferrin was higher than for the apo-form suggesting a cooperative iron-mediated metal binding mechanism. RAPTA-T binding to holo-transferrin was further investigated by electrospray mass spectrometry using both the intact protein and a model peptide mimicking the iron-binding pocket.
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Affiliation(s)
- Michael Groessl
- Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland. ; Fax: +41 (0)21 6939885; Tel: +41 (0)21 6939860
| | - Mattia Terenghi
- Dipartimento di Chimica Generale ed Inorganica, Chimica Analitica, Chimica Fisica, Università degli Studi di Parma, Viale G.P. Usberti 17/A, I-43100 Parma, Italy. ; Fax: +39 0521 905557; Tel: +39 0521 905476
| | - Angela Casini
- Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland. ; Fax: +41 (0)21 6939885; Tel: +41 (0)21 6939860
| | - Lisa Elviri
- Dipartimento di Chimica Generale ed Inorganica, Chimica Analitica, Chimica Fisica, Università degli Studi di Parma, Viale G.P. Usberti 17/A, I-43100 Parma, Italy. ; Fax: +39 0521 905557; Tel: +39 0521 905476
| | - Ryszard Lobinski
- CNRS/UPPA, Laboratoire de Chimie Analytique Bio-inorganique et Environnement, UMR 5254, Hélioparc 2, Av. Pr. Angot, F-64053 Pau, France
- Department of Analytical Chemistry, Warsaw University of Technology, 00-664 Warsaw, Poland
| | - Paul J. Dyson
- Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland. ; Fax: +41 (0)21 6939885; Tel: +41 (0)21 6939860
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