1
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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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2
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Macedo LJA, Rodrigues FP, Hassan A, Máximo LNC, Zobi F, da Silva RS, Crespilho FN. Non-destructive molecular FTIR spectromicroscopy for real time assessment of redox metallodrugs. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2022; 14:1094-1102. [PMID: 34935794 DOI: 10.1039/d1ay01198g] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Recent emergence of FTIR spectromicroscopy (micro-FTIR) as a dynamic spectroscopy for imaging to study biological chemistry has opened new possibilities for investigating in situ drug release, redox chemistry effects on biological molecules, DNA and drug interactions, membrane dynamics, and redox reactions with proteins at the single cell level. Micro-FTIR applied to metallodrugs has been playing an important role since the last decade because of its great potential to achieve more robust and controlled pharmacological effects against several diseases, including cancer. An important aspect in the development of these drugs is to understand their cellular properties, such as uptake, accumulation, activity, and toxicity. In this review, we present the potential application of micro-FTIR and its importance for studying metal-based drugs, highlighting the perspectives of chemistry of living cells. We also emphasise bioimaging, which is of high importance to localize the cellular processes, for a proper understanding of the mechanism of action.
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Affiliation(s)
- Lucyano J A Macedo
- São Carlos Institute of Chemistry, University of São Paulo, São Carlos, SP 13560-970, Brazil.
| | - Fernando P Rodrigues
- Department of Physics and Chemistry, University of São Paulo, Ribeirão Preto, SP 14040-903, Brazil
| | - Ayaz Hassan
- São Carlos Institute of Chemistry, University of São Paulo, São Carlos, SP 13560-970, Brazil.
| | - Leandro N C Máximo
- Department of Chemistry, Federal Institute of Education, Science and Technology, Goiano, Urutuai, GO 75790-000, Brazil
| | - Fabio Zobi
- Department of Chemistry, University of Fribourg, Chemin du Musée 9, Fribourg, CH-1700, Switzerland
| | - Roberto S da Silva
- Department of Physics and Chemistry, University of São Paulo, Ribeirão Preto, SP 14040-903, Brazil
| | - Frank N Crespilho
- São Carlos Institute of Chemistry, University of São Paulo, São Carlos, SP 13560-970, Brazil.
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3
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Current and emerging mass spectrometry methods for the preclinical development of metal-based drugs: a critical appraisal. Anal Bioanal Chem 2021; 414:95-102. [PMID: 34642780 DOI: 10.1007/s00216-021-03718-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2021] [Revised: 09/23/2021] [Accepted: 10/04/2021] [Indexed: 10/20/2022]
Abstract
This Trends article highlights the multiple ways in which the state-of-the-art molecular mass spectrometry can support the preclinical development of novel metal-based anticancer drugs. Examples from the recent literature-beyond routine characterization applications-are presented to illustrate what analytical and experimental design challenges are to be addressed to facilitate the translation of promising drug candidates to clinical practice.
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4
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Sarpong-Kumankomah S, Gailer J. Application of a Novel Metallomics Tool to Probe the Fate of Metal-Based Anticancer Drugs in Blood Plasma: Potential, Challenges and Prospects. Curr Top Med Chem 2021; 21:48-58. [PMID: 32600232 DOI: 10.2174/1568026620666200628023540] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2020] [Revised: 05/20/2020] [Accepted: 05/27/2020] [Indexed: 12/17/2022]
Abstract
Although metallodrugs are used to treat a variety of human disorders and exhibit a remarkable diversity of therapeutic properties, they constitute only a tiny minority of all medicinal drugs that are currently on the market. This undesirable situation must be partially attributed to our general lack of understanding the fate of metallodrugs in the extremely ligand-rich environment of the bloodstream. The challenge of gaining insight into these bioinorganic processes can be overcome by the application of 'metallomics tools', which involve the analysis of biological fluids (e.g., blood plasma) with a separation method in conjunction with multi-element specific detectors. To this end, we have developed a metallomics tool that is based on size-exclusion chromatography (SEC) hyphenated to an inductively coupled plasma atomic emission spectrometer (ICP-AES). After the successful application of SEC-ICPAES to analyze plasma for endogenous copper, iron and zinc-metalloproteins, it was subsequently applied to probe the metabolism of a variety of metal-based anticancer drugs in plasma. The versatility of this metallomics tool is exemplified by the fact that it has provided insight into the metabolism of individual Pt-based drugs, the modulation of the metabolism of cisplatin by sulfur-containing compounds, the metabolism of two metal-based drugs that contain different metals as well as a bimetallic anticancer drug, which contained two different metals. After adding pharmacologically relevant doses of metallodrugs to plasma, the temporal analysis of aliquots by SEC-ICP-AES allows to observe metal-protein adducts, metallodrug-derived degradation products and the parent metallodrug(s). This unique capability allows to obtain comprehensive insight into the fate of metal-based drugs in plasma and can be extended to in vivo studies. Thus, the application of this metallomics tool to probe the fate of novel metalcomplexes that exert the desired biological activity in plasma has the potential to advance more of these to animal/preclinical studies to fully explore the potential that metallodrugs inherently offer.
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Affiliation(s)
| | - Jürgen Gailer
- Department of Chemistry, Faculty of Science, University of Calgary, Calgary, Canada
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5
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Steel TR, Hartinger CG. Metalloproteomics for molecular target identification of protein-binding anticancer metallodrugs. Metallomics 2020; 12:1627-1636. [PMID: 33063808 DOI: 10.1039/d0mt00196a] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Proteomics has played an important role in elucidating the fundamental processes occuring in living cells. Translating these methods to metallodrug research ('metalloproteomics') has provided a means for molecular target identification of metal-based anticancer agents which should signifcantly advance the research field. In combination with biological assays, these techniques have enabled the mechanisms of action of metallodrugs to be linked to their interactions with molecular targets and aid understanding of their biological properties. Such investigations have profoundly increased our knowledge of the complex and dynamic nature of metallodrug-biomolecule interactions and have provided, at least for some compound types, a more detailed picture on their specific protein-binding patterns. This perspective highlights the progression of metallodrug proteomics research for the identification of non-DNA targets from standard analytical techniques to powerful metallodrug pull-down methods.
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Affiliation(s)
- Tasha R Steel
- School of Chemical Sciences, University of Auckland, Private Bag 92019, Auckland 1142, New Zealand.
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6
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Galvez L, Rusz M, Schwaiger-Haber M, El Abiead Y, Hermann G, Jungwirth U, Berger W, Keppler BK, Jakupec MA, Koellensperger G. Preclinical studies on metal based anticancer drugs as enabled by integrated metallomics and metabolomics. Metallomics 2020; 11:1716-1728. [PMID: 31497817 DOI: 10.1039/c9mt00141g] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Resistance development is a major obstacle for platinum-based chemotherapy, with the anticancer drug oxaliplatin being no exception. Acquired resistance is often associated with altered drug accumulation. In this work we introduce a novel -omics workflow enabling the parallel study of platinum drug uptake and its distribution between nucleus/protein and small molecule fraction along with metabolic changes after different treatment time points. This integrated metallomics/metabolomics approach is facilitated by a tailored sample preparation workflow suitable for preclinical studies on adherent cancer cell models. Inductively coupled plasma mass spectrometry monitors the platinum drug, while the metabolomics tool-set is provided by hydrophilic interaction liquid chromatography combined with high-resolution Orbitrap mass spectrometry. The implemented method covers biochemical key pathways of cancer cell metabolism as shown by a panel of >130 metabolite standards. Furthermore, the addition of yeast-based 13C-enriched internal standards upon extraction enabled a novel targeted/untargeted analysis strategy. In this study we used our method to compare an oxaliplatin sensitive human colon cancer cell line (HCT116) and its corresponding resistant model. In the acquired oxaliplatin resistant cells distinct differences in oxaliplatin accumulation correlated with differences in metabolomic rearrangements. Using this multi-omics approach for platinum-treated samples facilitates the generation of novel hypotheses regarding the susceptibility and resistance towards oxaliplatin.
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Affiliation(s)
- Luis Galvez
- Institute of Analytical Chemistry, Faculty of Chemistry, University of Vienna, Waehringer Strasse 38, 1090 Vienna, Austria.
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7
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Sullivan MP, Morrow SJ, Goldstone DC, Hartinger CG. Gel electrophoresis in combination with laser ablation-inductively coupled plasma mass spectrometry to quantify the interaction of cisplatin with human serum albumin. Electrophoresis 2019; 40:2329-2335. [PMID: 31087392 DOI: 10.1002/elps.201900070] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2019] [Revised: 05/08/2019] [Accepted: 05/09/2019] [Indexed: 11/09/2022]
Abstract
Cisplatin and its second and third generation analogues are widely used in the treatment of cancer. To study their reactions with proteins, we present a method based on SDS-PAGE separation and laser ablation-inductively coupled plasma-mass spectrometry (LA-ICP-MS) for platinum detection in the reaction between human serum albumin (HSA) and cisplatin. We developed matrix-matched standards of HSA/cisplatin mixtures and used them to quantify the amount of adducts formed at different HSA:cisplatin ratios. We noted that cisplatin incubation with HSA resulted in the formation of higher order HSA n-mers, depending on the amount of cisplatin added. This caused a depletion of the HSA dimer bands, while the majority of HSA was present as the monomer. Inducing the formation of such higher molecular weight species may have an impact on the mode of action of metallodrugs.
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Affiliation(s)
- Matthew P Sullivan
- School of Chemical Sciences, University of Auckland, Auckland, New Zealand.,School of Biological Sciences, University of Auckland, Auckland, New Zealand
| | - Stuart J Morrow
- School of Chemical Sciences, University of Auckland, Auckland, New Zealand
| | - David C Goldstone
- School of Biological Sciences, University of Auckland, Auckland, New Zealand
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8
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Distribution of platinum between nuclear and cytosolic fractions – Can subcellular fractionation be performed quantitatively? J Pharm Biomed Anal 2019; 165:82-89. [DOI: 10.1016/j.jpba.2018.11.046] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2018] [Revised: 11/05/2018] [Accepted: 11/19/2018] [Indexed: 12/20/2022]
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9
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Galvez L, Theiner S, Grabarics M, Kowol CR, Keppler BK, Hann S, Koellensperger G. Critical assessment of different methods for quantitative measurement of metallodrug-protein associations. Anal Bioanal Chem 2018; 410:7211-7220. [PMID: 30155703 PMCID: PMC6208971 DOI: 10.1007/s00216-018-1328-8] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2018] [Revised: 07/13/2018] [Accepted: 08/15/2018] [Indexed: 01/18/2023]
Abstract
Quantitative screening for potential drug-protein binding is an essential step in developing novel metal-based anticancer drugs. ICP-MS approaches are at the core of this task; however, many applications lack in the capability of large-scale high-throughput screenings and proper validation. In this work, we critically discuss the analytical figures of merit and the potential method-based quantitative differences applying four different ICP-MS strategies to ex vivo drug-serum incubations. Two candidate drugs, more specifically, two Pt(IV) complexes with known differences of binding affinity towards serum proteins were selected. The study integrated centrifugal ultrafiltration followed by flow injection analysis, turbulent flow chromatography (TFC), and size exclusion chromatography (SEC), all combined with inductively coupled plasma-mass spectrometry (ICP-MS). As a novelty, for the first time, UHPLC SEC-ICP-MS was implemented to enable rapid protein separation to be performed within a few minutes at > 90% column recovery for protein adducts and small molecules. Graphical abstract Quantitative screening for potential drug-protein binding is an essential step in developingnovel metal-based anticancer drugs.
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Affiliation(s)
- Luis Galvez
- Institute of Analytical Chemistry, Faculty of Chemistry, University of Vienna, Waehringer Strasse 38, 1090, Vienna, Austria
| | - Sarah Theiner
- Institute of Analytical Chemistry, Faculty of Chemistry, University of Vienna, Waehringer Strasse 38, 1090, Vienna, Austria
| | - Márkó Grabarics
- Institute of Analytical Chemistry, Faculty of Chemistry, University of Vienna, Waehringer Strasse 38, 1090, Vienna, Austria
| | - Christian R Kowol
- Institute of Inorganic Chemistry, Faculty of Chemistry, University of Vienna, Waehringer Strasse 42, 1090, Vienna, Austria
| | - Bernhard K Keppler
- Institute of Inorganic Chemistry, Faculty of Chemistry, University of Vienna, Waehringer Strasse 42, 1090, Vienna, Austria
| | - Stephan Hann
- Department of Chemistry, Division of Analytical Chemistry, University of Natural Resources and Life Sciences - BOKU Vienna, Muthgasse 18, 1190, Vienna, Austria
| | - Gunda Koellensperger
- Institute of Analytical Chemistry, Faculty of Chemistry, University of Vienna, Waehringer Strasse 38, 1090, Vienna, Austria.
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10
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Mathieu E, Sipos A, Demeyere E, Phipps D, Sakaveli D, Borbas KE. Lanthanide-based tools for the investigation of cellular environments. Chem Commun (Camb) 2018; 54:10021-10035. [PMID: 30101249 DOI: 10.1039/c8cc05271a] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Biological probes constructed from lanthanides can provide a variety of readout signals, such as the luminescence of Eu(iii), Tb(iii), Yb(iii), Sm(iii) and Dy(iii), and the proton relaxation enhancement of Gd(iii) and Eu(ii). For numerous applications the intracellular delivery of the lanthanide probe is essential. Here, we review the methods for the intracellular delivery of non-targeted complexes (i.e. where the overall complex structure enhances cellular uptake), as well as complexes attached to a targeting unit (i.e. to a peptide or a small molecule) that facilitates delivery. The cellular applications of lanthanide-based supramolecules (dendrimers, metal organic frameworks) are covered briefly. Throughout, we emphasize the techniques that can confirm the intracellular localization of the lanthanides and those that enable the determination of the fate of the probes once inside the cell. Finally, we highlight methods that have not yet been applied in the context of lanthanide-based probes, but have been successful in the intracellular delivery of other metal-based probes.
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Affiliation(s)
- Emilie Mathieu
- Department of Chemistry, Ångström Laboratory, Uppsala University, Box 523, 75120, Uppsala, Sweden.
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11
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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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12
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Theiner S, Grabarics M, Galvez L, Varbanov HP, Sommerfeld NS, Galanski MS, Keppler BK, Koellensperger G. The impact of whole human blood on the kinetic inertness of platinum(iv) prodrugs - an HPLC-ICP-MS study. Dalton Trans 2018; 47:5252-5258. [PMID: 29560976 PMCID: PMC5933005 DOI: 10.1039/c7dt04537a] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2017] [Accepted: 02/27/2018] [Indexed: 02/04/2023]
Abstract
The potential advantage of platinum(iv) complexes as alternatives to classical platinum(ii)-based drugs relies on their kinetic stability in the body before reaching the tumor site and on their activation by reduction inside cancer cells. In this study, an analytical workflow has been developed to investigate the reductive biotransformation and kinetic inertness of platinum(iv) prodrugs comprising different ligand coordination spheres (respectively, lipophilicity and redox behavior) in whole human blood. The distribution of platinum(iv) complexes in blood pellets and plasma was determined by inductively coupled plasma-mass spectrometry (ICP-MS) after microwave digestion. An analytical approach based on reversed-phase (RP)-ICP-MS was used to monitor the parent compound and the formation of metabolites using two different extraction procedures. The ligand coordination sphere of the platinum(iv) complexes had a significant impact on their accumulation in red blood cells and on their degree of kinetic inertness in whole human blood. The most lipophilic platinum(iv) compound featuring equatorial chlorido ligands showed a pronounced penetration into blood cells and a rapid reductive biotransformation. In contrast, the more hydrophilic platinum(iv) complexes with a carboplatin- and oxaliplatin-core exerted kinetic inertness on a pharmacologically relevant time scale with notable amounts of the compound accumulated in the plasma fraction.
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Affiliation(s)
- Sarah Theiner
- Institute of Analytical Chemistry, University of Vienna, Waehringer Strasse 38, 1090 Vienna, Austria.
| | - Márkó Grabarics
- Department of Pharmacognosy, Semmelweis University, Üllői út 26, 1085 Budapest, Hungary
| | - Luis Galvez
- Institute of Analytical Chemistry, University of Vienna, Waehringer Strasse 38, 1090 Vienna, Austria.
| | - Hristo P Varbanov
- Institute of Inorganic Chemistry, University of Vienna, Waehringer Strasse 42, 1090 Vienna, Austria
| | - Nadine S Sommerfeld
- Institute of Inorganic Chemistry, University of Vienna, Waehringer Strasse 42, 1090 Vienna, Austria
| | - Mathea S Galanski
- Institute of Inorganic Chemistry, University of Vienna, Waehringer Strasse 42, 1090 Vienna, Austria
| | - Bernhard K Keppler
- Institute of Inorganic Chemistry, University of Vienna, Waehringer Strasse 42, 1090 Vienna, Austria
- Research Cluster 'Translational Cancer Therapy Research', University of Vienna, Waehringer Strasse 42, 1090 Vienna, Austria
| | - Gunda Koellensperger
- Institute of Analytical Chemistry, University of Vienna, Waehringer Strasse 38, 1090 Vienna, Austria.
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13
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Chen X, Yang Q, Xiao L, Tang D, Dou QP, Liu J. Metal-based proteasomal deubiquitinase inhibitors as potential anticancer agents. Cancer Metastasis Rev 2018; 36:655-668. [PMID: 29039082 PMCID: PMC5721122 DOI: 10.1007/s10555-017-9701-1] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Deubiquitinases (DUBs) play an important role in protein quality control in eukaryotic cells due to their ability to specifically remove ubiquitin from substrate proteins. Therefore, recent findings have focused on the relevance of DUBs to cancer development, and pharmacological intervention on these enzymes has become a promising strategy for cancer therapy. In particular, several DUBs are physically and/or functionally associated with the proteasome and are attractive targets for the development of novel anticancer drugs. The successful clinical application of cisplatin in cancer treatment has prompted researchers to develop various metal-based anticancer agents with new properties. Recently, we have reported that several metal-based drugs, such as the antirheumatic gold agent auranofin (AF), the antifouling paint biocides copper pyrithione (CuPT) and zinc pyrithione (ZnPT), and also our two synthesized complexes platinum pyrithione (PtPT) and nickel pyrithione (NiPT), can target the proteasomal DUBs UCHL5 and USP14. In this review, we summarize the recently reported small molecule inhibitors of proteasomal DUBs, with a focus on discussion of the unique nature of metal-based proteasomal DUB inhibitors and their anticancer activity.
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Affiliation(s)
- Xin Chen
- Protein Modification and Degradation Lab, School of Basic Medical Sciences, Affiliated Tumor Hospital of Guangzhou Medical University, Guangzhou, China
| | - Qianqian Yang
- Protein Modification and Degradation Lab, School of Basic Medical Sciences, Affiliated Tumor Hospital of Guangzhou Medical University, Guangzhou, China
| | - Lu Xiao
- Protein Modification and Degradation Lab, School of Basic Medical Sciences, Affiliated Tumor Hospital of Guangzhou Medical University, Guangzhou, China
| | - Daolin Tang
- Protein Modification and Degradation Lab, School of Basic Medical Sciences, Affiliated Tumor Hospital of Guangzhou Medical University, Guangzhou, China.,Department of Surgery, University of Pittsburgh, Pittsburgh, PA, 15213, USA
| | - Q Ping Dou
- Protein Modification and Degradation Lab, School of Basic Medical Sciences, Affiliated Tumor Hospital of Guangzhou Medical University, Guangzhou, China.,The Molecular Therapeutics Program, Barbara Ann Karmanos Cancer Institute, Detroit, USA.,Department of Oncology, Pharmacology and Pathology, School of Medicine, Wayne State University, Detroit, MI, 48201-2013, USA
| | - Jinbao Liu
- Protein Modification and Degradation Lab, School of Basic Medical Sciences, Affiliated Tumor Hospital of Guangzhou Medical University, Guangzhou, China.
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14
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Babak MV, Pfaffeneder-Kmen M, Meier-Menches SM, Legina MS, Theiner S, Licona C, Orvain C, Hejl M, Hanif M, Jakupec MA, Keppler BK, Gaiddon C, Hartinger CG. Rollover Cyclometalated Bipyridine Platinum Complexes as Potent Anticancer Agents: Impact of the Ancillary Ligands on the Mode of Action. Inorg Chem 2018; 57:2851-2864. [DOI: 10.1021/acs.inorgchem.7b03210] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Maria V. Babak
- Institute of Inorganic Chemistry, University of Vienna, Waehringer Str. 42, 1090 Vienna, Austria
- Department of Chemistry, National University of Singapore, 3 Science Drive 2, 117543 Singapore
- School of Chemical Sciences, University of Auckland, Private Bag
92019, Auckland 1142, New Zealand
| | - Martin Pfaffeneder-Kmen
- Institute of Physical Chemistry, University of Vienna, Waehringer Str. 42, 1090 Vienna, Austria
| | - Samuel M. Meier-Menches
- Department of Analytical Chemistry, University of Vienna, Waehringer Str. 38, 1090 Vienna, Austria
| | - Maria S. Legina
- Institute of Inorganic Chemistry, University of Vienna, Waehringer Str. 42, 1090 Vienna, Austria
| | - Sarah Theiner
- Department of Analytical Chemistry, University of Vienna, Waehringer Str. 38, 1090 Vienna, Austria
- Research Cluster Translational Cancer Therapy Research, University of Vienna, 1090 Vienna, Austria
| | - Cynthia Licona
- Inserm UMR_S1113, Signalisation moléculaire du stress cellulaire et pathologies, Université de Strasbourg, 67200 Strasbourg, France
| | - Christophe Orvain
- Inserm UMR_S1113, Signalisation moléculaire du stress cellulaire et pathologies, Université de Strasbourg, 67200 Strasbourg, France
| | - Michaela Hejl
- Institute of Inorganic Chemistry, University of Vienna, Waehringer Str. 42, 1090 Vienna, Austria
| | - Muhammad Hanif
- School of Chemical Sciences, University of Auckland, Private Bag
92019, Auckland 1142, New Zealand
| | - Michael A. Jakupec
- Institute of Inorganic Chemistry, University of Vienna, Waehringer Str. 42, 1090 Vienna, Austria
- Research Cluster Translational Cancer Therapy Research, University of Vienna, 1090 Vienna, Austria
| | - Bernhard K. Keppler
- Institute of Inorganic Chemistry, University of Vienna, Waehringer Str. 42, 1090 Vienna, Austria
- Research Cluster Translational Cancer Therapy Research, University of Vienna, 1090 Vienna, Austria
| | - Christian Gaiddon
- Inserm UMR_S1113, Signalisation moléculaire du stress cellulaire et pathologies, Université de Strasbourg, 67200 Strasbourg, France
| | - Christian G. Hartinger
- School of Chemical Sciences, University of Auckland, Private Bag
92019, Auckland 1142, New Zealand
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15
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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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16
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Derrat HS, Robertson CC, Meijer AJHM, Thomas JA. Turning intercalators into groove binders: synthesis, photophysics and DNA binding properties of tetracationic mononuclear ruthenium(ii)-based chromophore–quencher complexes. Dalton Trans 2018; 47:12300-12307. [DOI: 10.1039/c8dt02633e] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Despite incorporating an extended planar polyaromatic ligand two newly synthesized RuII complexes are not DNA intercalators but groove binders.
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Affiliation(s)
- Hanan S. Derrat
- Department of Chemistry
- University of Sheffield
- Sheffield
- UK
- Department of Chemistry
| | | | | | - Jim A. Thomas
- Department of Chemistry
- University of Sheffield
- Sheffield
- UK
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17
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Mass spectrometry as a powerful tool to study therapeutic metallodrugs speciation mechanisms: Current frontiers and perspectives. Coord Chem Rev 2017. [DOI: 10.1016/j.ccr.2017.02.012] [Citation(s) in RCA: 78] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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18
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Dou YH, Xu SD, Chen Y, Wu XH. Synthesis, characterization, and anticancer activity of dithiocarbamate ruthenium(II) complexes. PHOSPHORUS SULFUR 2017. [DOI: 10.1080/10426507.2017.1359594] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Ye-Hong Dou
- Chemistry and Pharmaceutics Department, College of Chemistry and Chemical Engineering, Yunnan Normal University, Kunming, P. R. China
| | - Shou-De Xu
- Chemistry and Pharmaceutics Department, College of Chemistry and Chemical Engineering, Yunnan Normal University, Kunming, P. R. China
| | - Yi Chen
- Chemistry and Pharmaceutics Department, College of Chemistry and Chemical Engineering, Yunnan Normal University, Kunming, P. R. China
| | - Xiang-Hua Wu
- Chemistry and Pharmaceutics Department, College of Chemistry and Chemical Engineering, Yunnan Normal University, Kunming, P. R. China
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19
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Spinello A, Magistrato A. An omics perspective to the molecular mechanisms of anticancer metallo-drugs in the computational microscope era. Expert Opin Drug Discov 2017; 12:813-825. [DOI: 10.1080/17460441.2017.1340272] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Angelo Spinello
- CNR-IOM-DEMOCRITOS c/o International School for Advanced Studies (SISSA/ISAS), Trieste, Italy
| | - Alessandra Magistrato
- CNR-IOM-DEMOCRITOS c/o International School for Advanced Studies (SISSA/ISAS), Trieste, Italy
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20
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Basu Baul TS, Dutta D, Duthie A, Prasad R, Rana NK, Koch B, Tiekink ERT. Triphenyltin(IV) benzoates with diazenyl/imino scaffold exhibiting remarkable apoptosis mediated by reactive oxygen species. J Inorg Biochem 2017; 173:79-92. [PMID: 28505480 DOI: 10.1016/j.jinorgbio.2017.04.020] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2016] [Revised: 03/25/2017] [Accepted: 04/23/2017] [Indexed: 01/13/2023]
Abstract
The cytotoxic potency of a series of triphenyltin(IV) compounds of general composition [Ph3Sn(Ln)] (1-6) has been probed in vitro employing MDA-MB-231 (human breast cancer) and HeLa (human cervical cancer) cell lines, where Ln=L1-3; isomeric 2/3/4-{(E)-2-[4-(dimethylamino)phenyl]diazenyl}benzoates and L4-6 are their corresponding isoelectronic imino analogues 2/3/4-[(E)-{[4-(dimethylamino)phenyl]methylidene}amino]benzoates. Compounds 1-6 have been characterized by elemental analysis and their spectroscopic properties were studied using IR and NMR (1H, 13C, 119Sn) techniques. The molecular structures of a pro-ligand 2-[(E)-{[4-(dimethylamino)phenyl]methylidene}amino]benzoic acid (HL4) and two representative molecules, Ph3Sn(L2) 2 and Ph3Sn(L5) 5, have been determined by X-ray crystallography. Structural analyses of 2 and 5 revealed distorted tetrahedral geometries within C3O donor sets owing to monodentate modes of coordination of the respective carboxylate ligands, close intramolecular Sn…O(carbonyl) interactions notwithstanding. Cytotoxic studies in vitro in MDA-MB-231 and HeLa cell lines revealed high activity, in sub-micromolar range, for all investigated compounds. Among these, 1 and 3 exhibited potent cytotoxicity most effectively towards MDA-MB-231 cells with a IC50 value of 1.19 and 1.44μM, respectively, whereas 5 showed remarkable activity towards HeLa cells with a IC50 value of 0.88μM, yet the series of compounds had minimal cytotoxic effect on normal HEK 293 (human embryonic kidney) cell line. The underlying investigation suggested that the compounds exert potent antitumor effect by elevating intracellular reactive oxygen species generation and cause delay in cell cycle by inhibiting cells at G2/M phase. The results presented herein suggest further development of this class of triphenyltin(IV) compounds-based drugs as potential anti-cancer therapies should be pursued.
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Affiliation(s)
- Tushar S Basu Baul
- Centre for Advanced Studies in Chemistry, North-Eastern Hill University, NEHU Permanent Campus, Umshing, Shillong 793 022, India.
| | - Dhrubajyoti Dutta
- Centre for Advanced Studies in Chemistry, North-Eastern Hill University, NEHU Permanent Campus, Umshing, Shillong 793 022, India
| | - Andrew Duthie
- School of Life & Environmental Science, Deakin University, Geelong, Victoria 3217, Australia
| | - Ritika Prasad
- Genotoxicology and Cancer Biology Lab, Department of Zoology, Banaras Hindu University, Varanasi, India
| | - Nishant Kumar Rana
- Genotoxicology and Cancer Biology Lab, Department of Zoology, Banaras Hindu University, Varanasi, India
| | - Biplob Koch
- Genotoxicology and Cancer Biology Lab, Department of Zoology, Banaras Hindu University, Varanasi, India.
| | - Edward R T Tiekink
- Research Centre for Crystalline Materials, School of Science and Technology, Sunway University, 47500 Bandar Sunway, Selangor Darul Ehsan, Malaysia.
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21
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Sussulini A, Becker JS, Becker JS. Laser ablation ICP-MS: Application in biomedical research. MASS SPECTROMETRY REVIEWS 2017; 36:47-57. [PMID: 26398248 DOI: 10.1002/mas.21481] [Citation(s) in RCA: 67] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/07/2015] [Accepted: 08/27/2015] [Indexed: 06/05/2023]
Abstract
In the last decade, the development of diverse bioanalytical methodologies based on mass spectrometry imaging has increased, as has their application in biomedical questions. The distribution analysis of elements (metals, semimetals, and non-metals) in biological samples is a point of interest in life sciences, especially within the context of metallomics, which is the scientific field that encompasses the global analysis of the entirety of elemental species inside a cell or tissue. Laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) has been efficiently employed to generate qualitative and quantitative maps of elemental distribution in thin tissue sections of a variety of biological samples, for example, brain, cartilage, spinal cord, etc. The combination of elemental with molecular mass spectrometry allows obtaining information about the elements bound to proteins, when they are previously separated by gel electrophoresis (metalloproteomics), and also adding a new dimension to molecular mass spectrometry imaging by the correlation of molecular and elemental distribution maps in definite regions in a biological tissue. In the present review, recent biomedical applications in LA-ICP-MS imaging as a stand-alone technique and in combination with molecular mass spectrometry imaging techniques are discussed. Applications of LA-ICP-MS in the study of neurodegenerative diseases, distribution of contrast agents and metallodrugs, and metalloproteomics will be focused in this review. © 2015 Wiley Periodicals, Inc. Mass Spec Rev 36:47-57, 2017.
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Affiliation(s)
- Alessandra Sussulini
- Department of Analytical Chemistry, Institute of Chemistry, Universidade Estadual de Campinas, P.O. Box 6154, 13083-970, Campinas, SP, Brazil
| | | | - Johanna Sabine Becker
- Zentralinstitut für Engineering, Elektronik und Analytik, Analytik (ZEA-3), Forschungszentrum Jülich, D-52425, Jülich, Germany
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22
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Sonet J, Bulteau AL, Chavatte L, García-Barrera T, Gómez-Ariza JL, Callejón-Leblic B, Nischwitz V, Theiner S, Galvez L, Koellensperger G, Keppler BK, Roman M, Barbante C, Neth K, Bornhorst J, Michalke B. Biomedical and Pharmaceutical Applications. Metallomics 2016. [DOI: 10.1002/9783527694907.ch13] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Jordan Sonet
- Centre National de Recherche Scientifique (CNRS)/Université de Pau et des Pays de l'Adour (UPPA), Unité Mixte de Recherche (UMR) 5254; Institut Pluridisciplinaire de Recherche sur l'Environnement et les Matériaux (IPREM), Laboratoire de Chimie Analytique Bio-Inorganique et Environnement (LCABIE); Technopôle Hélioparc Pau Pyrénées, 2 Avenue du Président Pierre Angot 64000 Pau France
| | - Anne-Laure Bulteau
- Centre National de Recherche Scientifique (CNRS)/Université de Pau et des Pays de l'Adour (UPPA), Unité Mixte de Recherche (UMR) 5254; Institut Pluridisciplinaire de Recherche sur l'Environnement et les Matériaux (IPREM), Laboratoire de Chimie Analytique Bio-Inorganique et Environnement (LCABIE); Technopôle Hélioparc Pau Pyrénées, 2 Avenue du Président Pierre Angot 64000 Pau France
| | - Laurent Chavatte
- Centre National de Recherche Scientifique (CNRS)/Université de Pau et des Pays de l'Adour (UPPA), Unité Mixte de Recherche (UMR) 5254; Institut Pluridisciplinaire de Recherche sur l'Environnement et les Matériaux (IPREM), Laboratoire de Chimie Analytique Bio-Inorganique et Environnement (LCABIE); Technopôle Hélioparc Pau Pyrénées, 2 Avenue du Président Pierre Angot 64000 Pau France
| | - Tamara García-Barrera
- University of Huelva; Department of Chemistry, Campus El Carmen; Fuerzas Armadas Ave 21007 Huelva Spain
| | - José Luis Gómez-Ariza
- University of Huelva, Research Center of Health and Environment (CYSMA); Campus El Carmen; Fuerzas Armadas Ave 21007 Huelva Spain
| | - Belén Callejón-Leblic
- University of Huelva; Department of Chemistry, Campus El Carmen; Fuerzas Armadas Ave 21007 Huelva Spain
| | - Volker Nischwitz
- Forschungszentrum Jülich; Central Institute for Engineering, Electronics and Analytics; Analytics (ZEA-3), Wilhelm-Johnen-Straße 52428 Jülich Germany
| | - Sarah Theiner
- University of Vienna; Department of Inorganic Chemistry; Waehringer Strasse 42 1090 Vienna Austria
| | - Luis Galvez
- University of Vienna, Research Platform ‘Translational Cancer Therapy Research’; Waehringer Strasse 42 1090 Vienna Austria
| | - Gunda Koellensperger
- University of Vienna, Department of Analytical Chemistry; Waehringer Strasse 38 1090 Vienna Austria
| | - Bernhard K. Keppler
- University of Vienna; Department of Inorganic Chemistry; Waehringer Strasse 42 1090 Vienna Austria
| | - Marco Roman
- Ca' Foscari University of Venice; Department of Environmental Sciences, Informatics and Statistics (DAIS); Via Torino 155 30172 Venice Italy
| | - Carlo Barbante
- National Research Council; Institute for the Dynamics of Environmental Processes (IDPA-CNR); Via Torino 155 30172 Venice Italy
| | - Katharina Neth
- Helmholtz Center Munich, German Research Center for Environmental Health GmbH; Research Unit: Analytical BioGeoChemistry; Ingolstädter Landstraße 1 85764 Neuherberg Germany
| | - Julia Bornhorst
- University of Potsdam; Department of Food Chemistry, Institute of Nutritional Science; Arthur-Scheunert-Allee 114-116 14558 Nuthetal Germany
| | - Bernhard Michalke
- Helmholtz Center Munich, German Research Center for Environmental Health GmbH; Research Unit: Analytical BioGeoChemistry; Ingolstädter Landstraße 1 85764 Neuherberg Germany
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23
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Insights into the cytotoxic activity of the phosphane copper(I) complex [Cu(thp) 4][PF 6]. J Inorg Biochem 2016; 165:80-91. [PMID: 27449160 DOI: 10.1016/j.jinorgbio.2016.07.007] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/29/2016] [Revised: 06/30/2016] [Accepted: 07/07/2016] [Indexed: 11/24/2022]
Abstract
The phosphane Cu(I) complex [Cu(thp)4][PF6], 1 (thp=tris(hydroxymethyl)phosphane) shows notable in vitro antitumour activity against a wide range of solid tumours. Uptake experiments performed in 1-treated colon cancer cells by atomic absorption spectrometry, reveal that the antiproliferative activity is consistent with the intracellular copper content. The solution chemistry of this agent, investigated by means of X-ray Absorption Spectroscopy and spectrophotometric titrations in aqueous media, indicates that 1 is labile giving coordinative unsaturated [Cu(thp)n]+ species (n=3 and 2) at micromolar concentrations. [Cu(thp)n]+ are reactive species that yield the mixed-ligand complex [Cu(thp)2(BCS)]- (BCS: bathocuproinedisulphonate(2-)) upon interaction with N,N-diimine. Analogously, [Cu(thp)n]+ interact with the methionine-rich peptide sequence (Ac-MMMMPMTFK-NH2; Pep1), relevant in the recruiting of physiological copper, giving [Cu(thp)(Pep1)]+ and [Cu(Pep1)]+ species. The formation of these adducts was assessed by electrospray mass spectrometry in the positive ion mode and validated by density functional theory investigations. The possibility to trans-chelate Cu(I) from pure inorganic [Cu(thp)n]+ assemblies into more physiological adducts represents a pathway that complex 1 might follow during the internalization process into cancer cells.
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24
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25
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Lee RFS, Escrig S, Croisier M, Clerc-Rosset S, Knott GW, Meibom A, Davey CA, Johnsson K, Dyson PJ. NanoSIMS analysis of an isotopically labelled organometallic ruthenium(II) drug to probe its distribution and state in vitro. Chem Commun (Camb) 2016; 51:16486-9. [PMID: 26426486 DOI: 10.1039/c5cc06983a] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
The in vitro inter- and intra-cellular distribution of an isotopically labelled ruthenium(II)-arene (RAPTA) anti-metastatic compound in human ovarian cancer cells was imaged using nano-scale secondary ion mass spectrometry (NanoSIMS). Ultra-high resolution isotopic images of (13)C, (15)N, and Ru indicate that the phosphine ligand remains coordinated to the ruthenium(II) ion whereas the arene detaches. The complex localizes mainly on the membrane or at the interface between cells which correlates with its anti-metastatic effects.
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Affiliation(s)
- Ronald F S Lee
- Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland.
| | - Stéphane Escrig
- Laboratory for Biological Geochemistry, Ecole Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland.
| | - Marie Croisier
- Interdisciplinary Centre for Electron Microscopy, Ecole Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland.
| | - Stéphanie Clerc-Rosset
- Interdisciplinary Centre for Electron Microscopy, Ecole Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland.
| | - Graham W Knott
- Interdisciplinary Centre for Electron Microscopy, Ecole Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland.
| | - Anders Meibom
- Laboratory for Biological Geochemistry, Ecole Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland. and Center for Advanced Surface Analysis, Institute of Earth Sciences, University of Lausanne, CH-1015 Lausanne, Switzerland
| | - Curt A Davey
- Division of Structural Biology and Biochemistry, School of Biological Sciences, Nanyang Technological University, 60 Nanyang Drive, Singapore 637551, Singapore
| | - Kai Johnsson
- Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland.
| | - Paul J Dyson
- Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland.
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26
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Holtkamp H, Hartinger CG. Capillary electrophoresis in metallodrug development. DRUG DISCOVERY TODAY. TECHNOLOGIES 2015; 16:16-22. [PMID: 26547417 DOI: 10.1016/j.ddtec.2015.07.004] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/23/2015] [Accepted: 07/28/2015] [Indexed: 06/05/2023]
Abstract
Capillary electrophoresis (CE) is a separation method based on differential migration of analytes in electric fields. The compatibility with purely aqueous separation media makes it a versatile tool in metallodrug research. Many metallodrugs undergo ligand exchange reactions that can easily be followed with this method and the information gained can even be improved by coupling the CE to advanced detectors, such as mass spectrometers. This gives the method high potential to facilitate the development of metallodrugs, especially when combined with innovative method development and experimental design.
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Affiliation(s)
- Hannah Holtkamp
- University of Auckland, School of Chemical Sciences, Private Bag 92019, Auckland 1142, New Zealand
| | - Christian G Hartinger
- University of Auckland, School of Chemical Sciences, Private Bag 92019, Auckland 1142, New Zealand.
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27
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Mügge C, Marzo T, Massai L, Hildebrandt J, Ferraro G, Rivera-Fuentes P, Metzler-Nolte N, Merlino A, Messori L, Weigand W. Platinum(II) Complexes with O,S Bidentate Ligands: Biophysical Characterization, Antiproliferative Activity, and Crystallographic Evidence of Protein Binding. Inorg Chem 2015; 54:8560-70. [PMID: 26280387 DOI: 10.1021/acs.inorgchem.5b01238] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
We recently characterized a series of novel platinum(II) compounds bearing a conserved O,S binding moiety as a bifunctional ligand and evaluated their solution behavior and antiproliferative properties in vitro against a representative cancer cell line. On the whole, those platinum compounds showed an appreciable stability in mixed dimethyl sulfoxide-aqueous buffers and promising in vitro cytotoxic effects; yet they manifested a rather limited solubility in aqueous media making them poorly suitable for further pharmaceutical development. To overcome this drawback, four new derivatives of this series were prepared and characterized based on a careful choice of substituents on the O,S bidentate ligand. The solubility and stability profile of these novel compounds in a reference buffer was determined, as well as the ligands' log P(o/w) value (P(o/w) = n-octanol-water partition coefficient) as an indirect measure for the complexes' lipophilicity. The antiproliferative properties were comparatively evaluated in a panel of three cancer cell lines. The protein binding properties of the four platinum compounds were assessed using the model protein hen egg white lysozyme (HEWL), and the molecular structures of two relevant HEWL-metallodrug adducts were solved. Overall, it is shown that a proper choice of the substituents leads to a higher solubility and enables a selective fine-tuning of the antiproliferative properties. The implications of these results are thoroughly discussed.
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Affiliation(s)
- Carolin Mügge
- Institute of Inorganic and Analytical Chemistry, Friedrich-Schiller-University Jena , Humboldtstraße 8, 07743 Jena, Germany.,Inorganic Chemistry I - Bioinorganic Chemistry, Faculty of Chemistry and Biochemistry, Ruhr University Bochum , Universitaetsstrasse 150, 44801 Bochum, Germany
| | - Tiziano Marzo
- Laboratory of Metals in Medicine, Department of Chemistry, University of Florence , Via della Lastruccia 3, 50019 Sesto Fiorentino, Firenze, Italy
| | - Lara Massai
- Laboratory of Metals in Medicine, Department of Chemistry, University of Florence , Via della Lastruccia 3, 50019 Sesto Fiorentino, Firenze, Italy
| | - Jana Hildebrandt
- Institute of Inorganic and Analytical Chemistry, Friedrich-Schiller-University Jena , Humboldtstraße 8, 07743 Jena, Germany
| | - Giarita Ferraro
- Department of Chemical Sciences, University of Naples Federico II , via Cintia, Napoli I-80126, Italy
| | - Pablo Rivera-Fuentes
- Department of Chemistry, Chemistry Research Laboratory, University of Oxford , 12 Mansfield Road, Oxford OX1 3TA, United Kingdom
| | - Nils Metzler-Nolte
- Inorganic Chemistry I - Bioinorganic Chemistry, Faculty of Chemistry and Biochemistry, Ruhr University Bochum , Universitaetsstrasse 150, 44801 Bochum, Germany
| | - Antonello Merlino
- Department of Chemical Sciences, University of Naples Federico II , via Cintia, Napoli I-80126, Italy.,CNR Institute of Biostructures and Bioimages , via Mezzocannone 16, Napoli I-80100, Italy
| | - Luigi Messori
- Laboratory of Metals in Medicine, Department of Chemistry, University of Florence , Via della Lastruccia 3, 50019 Sesto Fiorentino, Firenze, Italy
| | - Wolfgang Weigand
- Institute of Inorganic and Analytical Chemistry, Friedrich-Schiller-University Jena , Humboldtstraße 8, 07743 Jena, Germany.,Jena Center for Soft Matter (JCSM) , Philosophenweg 7, 07743 Jena, Germany
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28
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Liu LJ, Lu L, Zhong HJ, He B, Kwong DWJ, Ma DL, Leung CH. An Iridium(III) Complex Inhibits JMJD2 Activities and Acts as a Potential Epigenetic Modulator. J Med Chem 2015. [DOI: 10.1021/acs.jmedchem.5b00375] [Citation(s) in RCA: 56] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Li-Juan Liu
- State
Key Laboratory of Quality Research in Chinese Medicine, Institute
of Chinese Medical Sciences, University of Macau, Taipa, Macao P. R. China
| | - Lihua Lu
- Department
of Chemistry, Hong Kong Baptist University, Kowloon Tong, Hong Kong P. R. China
| | - Hai-Jing Zhong
- State
Key Laboratory of Quality Research in Chinese Medicine, Institute
of Chinese Medical Sciences, University of Macau, Taipa, Macao P. R. China
| | - Bingyong He
- Department
of Chemistry, Hong Kong Baptist University, Kowloon Tong, Hong Kong P. R. China
| | - Daniel W. J. Kwong
- Department
of Chemistry, Hong Kong Baptist University, Kowloon Tong, Hong Kong P. R. China
| | - Dik-Lung Ma
- Department
of Chemistry, Hong Kong Baptist University, Kowloon Tong, Hong Kong P. R. China
| | - Chung-Hang Leung
- State
Key Laboratory of Quality Research in Chinese Medicine, Institute
of Chinese Medical Sciences, University of Macau, Taipa, Macao P. R. China
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29
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Scrase TG, O’Neill MJ, Peel AJ, Senior PW, Matthews PD, Shi H, Boss SR, Barker PD. Selective Lability of Ruthenium(II) Arene Amino Acid Complexes. Inorg Chem 2015; 54:3118-24. [DOI: 10.1021/ic502051y] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Tom G. Scrase
- University of Cambridge, Chemistry Department, Lensfield Road, Cambridge CB2 1EW, United Kingdom
| | - Michael J. O’Neill
- University of Cambridge, Chemistry Department, Lensfield Road, Cambridge CB2 1EW, United Kingdom
| | - Andrew J. Peel
- University of Cambridge, Chemistry Department, Lensfield Road, Cambridge CB2 1EW, United Kingdom
| | - Paul W. Senior
- University of Cambridge, Chemistry Department, Lensfield Road, Cambridge CB2 1EW, United Kingdom
| | - Peter D. Matthews
- University of Cambridge, Chemistry Department, Lensfield Road, Cambridge CB2 1EW, United Kingdom
| | - Heyao Shi
- University of Cambridge, Chemistry Department, Lensfield Road, Cambridge CB2 1EW, United Kingdom
| | - Sally R. Boss
- University of Cambridge, Chemistry Department, Lensfield Road, Cambridge CB2 1EW, United Kingdom
| | - Paul D. Barker
- University of Cambridge, Chemistry Department, Lensfield Road, Cambridge CB2 1EW, United Kingdom
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30
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Babak MV, Meier SM, Huber KVM, Reynisson J, Legin AA, Jakupec MA, Roller A, Stukalov A, Gridling M, Bennett KL, Colinge J, Berger W, Dyson PJ, Superti-Furga G, Keppler BK, Hartinger CG. Target profiling of an antimetastatic RAPTA agent by chemical proteomics: relevance to the mode of action. Chem Sci 2015; 6:2449-2456. [PMID: 29308157 PMCID: PMC5647740 DOI: 10.1039/c4sc03905j] [Citation(s) in RCA: 109] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2014] [Accepted: 02/09/2015] [Indexed: 12/24/2022] Open
Abstract
The RAPTA pharmacophore was linked to beads to identify its biomolecular targets in cancer cells.
The clinical development of anticancer metallodrugs is often hindered by the elusive nature of their molecular targets. To identify the molecular targets of an antimetastatic ruthenium organometallic complex based on 1,3,5-triaza-7-phosphaadamantane (RAPTA), we employed a chemical proteomic approach. The approach combines the design of an affinity probe featuring the pharmacophore with mass-spectrometry-based analysis of interacting proteins found in cancer cell lysates. The comparison of data sets obtained for cell lysates from cancer cells before and after treatment with a competitive binder suggests that RAPTA interacts with a number of cancer-related proteins, which may be responsible for the antiangiogenic and antimetastatic activity of RAPTA complexes. Notably, the proteins identified include the cytokines midkine, pleiotrophin and fibroblast growth factor-binding protein 3. We also detected guanine nucleotide-binding protein-like 3 and FAM32A, which is in line with the hypothesis that the antiproliferative activity of RAPTA compounds is due to induction of a G2/M arrest and histone proteins identified earlier as potential targets.
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Affiliation(s)
- Maria V Babak
- School of Chemical Sciences , University of Auckland , Private Bag 92019 , Auckland 1142 , New Zealand . .,Institute of Inorganic Chemistry , University of Vienna , Waehringer Str. 42 , A-1090 Vienna , Austria
| | - Samuel M Meier
- Institute of Analytical Chemistry , University of Vienna , Waehringer Str. 38 , A-1090 Vienna , Austria
| | - Kilian V M Huber
- CeMM Research Center for Molecular Medicine , Lazarettgasse 14, AKH BT 25.3 , A-1090 Vienna , Austria
| | - Jóhannes Reynisson
- School of Chemical Sciences , University of Auckland , Private Bag 92019 , Auckland 1142 , New Zealand .
| | - Anton A Legin
- Institute of Inorganic Chemistry , University of Vienna , Waehringer Str. 42 , A-1090 Vienna , Austria
| | - Michael A Jakupec
- Institute of Inorganic Chemistry , University of Vienna , Waehringer Str. 42 , A-1090 Vienna , Austria
| | - Alexander Roller
- Institute of Inorganic Chemistry , University of Vienna , Waehringer Str. 42 , A-1090 Vienna , Austria
| | - Alexey Stukalov
- CeMM Research Center for Molecular Medicine , Lazarettgasse 14, AKH BT 25.3 , A-1090 Vienna , Austria
| | - Manuela Gridling
- CeMM Research Center for Molecular Medicine , Lazarettgasse 14, AKH BT 25.3 , A-1090 Vienna , Austria
| | - Keiryn L Bennett
- CeMM Research Center for Molecular Medicine , Lazarettgasse 14, AKH BT 25.3 , A-1090 Vienna , Austria
| | - Jacques Colinge
- CeMM Research Center for Molecular Medicine , Lazarettgasse 14, AKH BT 25.3 , A-1090 Vienna , Austria
| | - Walter Berger
- Department of Medicine I , Institute of Cancer Research , Medical University Vienna , Borschkegasse 8a , A-1090 Vienna , Austria
| | - Paul J Dyson
- Institut des Sciences et Ingénierie Chimiques , Ecole Polytechnique Fédérale de Lausanne (EPFL) , CH-1015 Lausanne , Switzerland
| | - Giulio Superti-Furga
- CeMM Research Center for Molecular Medicine , Lazarettgasse 14, AKH BT 25.3 , A-1090 Vienna , Austria
| | - Bernhard K Keppler
- Institute of Inorganic Chemistry , University of Vienna , Waehringer Str. 42 , A-1090 Vienna , Austria
| | - Christian G Hartinger
- School of Chemical Sciences , University of Auckland , Private Bag 92019 , Auckland 1142 , New Zealand .
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31
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Doulain PE, Decréau R, Racoeur C, Goncalves V, Dubrez L, Bettaieb A, Le Gendre P, Denat F, Paul C, Goze C, Bodio E. Towards the elaboration of new gold-based optical theranostics. Dalton Trans 2015; 44:4874-83. [DOI: 10.1039/c4dt02977a] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Four new red BODIPY–gold(i) theranostic compounds were synthesized.
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32
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Ritacco I, Moustafa EM, Sicilia E, Russo N, Shoeib T. Fragmentation pathways analysis for the gas phase dissociation of protonated carnosine-oxaliplatin complexes. Dalton Trans 2015; 44:4455-67. [DOI: 10.1039/c4dt02217c] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Collision-induced dissociation (CID) experiments on the protonated carnosine-oxaliplatin complex were shown to yield nine different fragment ions. Density functional calculations were employed to probe the fragmentation mechanisms that account for all experimental data.
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Affiliation(s)
- Ida Ritacco
- Dipartimento di Chimica UniVersita della Calabria
- Via P. Bucci
- cubo 14c
- 87036 Arca Vacata di Rende (CS)
- Centro di Calcolo ad Alte Prestazioni per Elaborazioni Parallele e Distribuite - Centro d'Eccellenza MIUR
| | - Eslam M. Moustafa
- Department of Chemistry
- The American University in Cairo
- New Cairo 11835
- Egypt
| | - Emilia Sicilia
- Dipartimento di Chimica UniVersita della Calabria
- Via P. Bucci
- cubo 14c
- 87036 Arca Vacata di Rende (CS)
- Centro di Calcolo ad Alte Prestazioni per Elaborazioni Parallele e Distribuite - Centro d'Eccellenza MIUR
| | - Nino Russo
- Dipartimento di Chimica UniVersita della Calabria
- Via P. Bucci
- cubo 14c
- 87036 Arca Vacata di Rende (CS)
- Centro di Calcolo ad Alte Prestazioni per Elaborazioni Parallele e Distribuite - Centro d'Eccellenza MIUR
| | - Tamer Shoeib
- Department of Chemistry
- The American University in Cairo
- New Cairo 11835
- Egypt
- Centre for Analytical Science
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33
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Matczuk M, Kupiec M, Legat J, Pawlak K, Timerbaev AR, Jarosz M. A shotgun metalloproteomic approach enables identification of proteins involved in the speciation of a ruthenium anticancer drug in the cytosol of cancer cells. Analyst 2015; 140:3492-9. [DOI: 10.1039/c5an00426h] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Development of a versatile analytical methodology for characterization of the cancer cytosol species formed between ruthenium originating from a Ru(iii) drug and cellular proteins.
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Affiliation(s)
- Magdalena Matczuk
- Chair of Analytical Chemistry
- Faculty of Chemistry
- Warsaw University of Technology
- 00-664 Warsaw
- Poland
| | - Monika Kupiec
- Chair of Analytical Chemistry
- Faculty of Chemistry
- Warsaw University of Technology
- 00-664 Warsaw
- Poland
| | - Joanna Legat
- Chair of Analytical Chemistry
- Faculty of Chemistry
- Warsaw University of Technology
- 00-664 Warsaw
- Poland
| | - Katarzyna Pawlak
- Chair of Analytical Chemistry
- Faculty of Chemistry
- Warsaw University of Technology
- 00-664 Warsaw
- Poland
| | - Andrei R. Timerbaev
- Vernadsky Institute of Geochemistry and Analytical Chemistry
- 119991 Moscow
- Russian Federation
| | - Maciej Jarosz
- Chair of Analytical Chemistry
- Faculty of Chemistry
- Warsaw University of Technology
- 00-664 Warsaw
- Poland
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34
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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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35
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Jarosz M, Matczuk M, Pawlak K, Timerbaev AR. Molecular mass spectrometry in metallodrug development: A case of mapping transferrin-mediated transformations for a ruthenium(III) anticancer drug. Anal Chim Acta 2014; 851:72-7. [DOI: 10.1016/j.aca.2014.08.031] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2014] [Revised: 08/06/2014] [Accepted: 08/15/2014] [Indexed: 01/04/2023]
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36
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Leung CH, Lin S, Zhong HJ, Ma DL. Metal complexes as potential modulators of inflammatory and autoimmune responses. Chem Sci 2014; 6:871-884. [PMID: 28660015 PMCID: PMC5472922 DOI: 10.1039/c4sc03094j] [Citation(s) in RCA: 99] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2014] [Accepted: 11/07/2014] [Indexed: 01/05/2023] Open
Abstract
In this perspective, we highlight recent examples in the development of transition metal complexes as modulators of inflammatory and autoimmune responses.
Over the past few decades, the realm of inorganic medicinal chemistry has been dominated by the study of the anti-cancer properties of transition metal complexes, particularly those based on platinum or ruthenium. However, comparatively less attention has been focused on the development of metal complexes for the treatment of inflammatory or autoimmune diseases. Metal complexes possess a number of advantages that render them as attractive alternatives to organic small molecules for the development of therapeutic agents. In this perspective, we highlight recent examples in the development of transition metal complexes as modulators of inflammatory and autoimmune responses. The studies presented here serve to highlight the potential of transition metal complexes in modulating inflammatory or immune pathways in cells.
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Affiliation(s)
- Chung-Hang Leung
- State Key Laboratory of Quality Research in Chinese Medicine , Institute of Chinese Medical Sciences , University of Macau , Macao , China .
| | - Sheng Lin
- Department of Chemistry , Hong Kong Baptist University , Kowloon Tong , Hong Kong , China .
| | - Hai-Jing Zhong
- State Key Laboratory of Quality Research in Chinese Medicine , Institute of Chinese Medical Sciences , University of Macau , Macao , China .
| | - Dik-Lung Ma
- Department of Chemistry , Hong Kong Baptist University , Kowloon Tong , Hong Kong , China .
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37
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How useful is ICP-MS for determining PK properties of metal-based drugs? Bioanalysis 2014; 6:273-6. [DOI: 10.4155/bio.13.333] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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38
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Hartinger CG, Groessl M, Meier SM, Casini A, Dyson PJ. Application of mass spectrometric techniques to delineate the modes-of-action of anticancer metallodrugs. Chem Soc Rev 2014; 42:6186-99. [PMID: 23660626 DOI: 10.1039/c3cs35532b] [Citation(s) in RCA: 112] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Mass spectrometry (MS) has emerged as an important tool for studying anticancer metallodrugs in complex biological samples and for characterising their interactions with biomolecules and potential targets on a molecular level. The exact modes-of-action of these coordination compounds and especially of next generation drug candidates have not been fully elucidated. Due to the fact that DNA is considered a crucial target for platinum chemotherapeutics, metallodrug-DNA binding studies dominated the field for a long time. However, more recently, alternative targets were considered, including enzymes and proteins that may play a role in the overall pharmacological and toxicological profile of metallodrugs. This review focuses on MS-based techniques for studying anticancer metallodrugs in vivo, in vitro and in situ to delineate their modes-of-action.
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Affiliation(s)
- Christian G Hartinger
- School of Chemical Sciences, The University of Auckland, 1142 Auckland, New Zealand.
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39
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Synthesis, X-ray structure and strong in vitro cytotoxicity of novel organoruthenium complexes. J Organomet Chem 2014. [DOI: 10.1016/j.jorganchem.2013.08.041] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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40
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Scrase TG, Page SM, Barker PD, Boss SR. Folates are potential ligands for ruthenium compounds in vivo. Dalton Trans 2014; 43:8158-61. [DOI: 10.1039/c4dt00081a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A labile ruthenium(ii) complex has been observed to chelate to folates under physiologically relevant conditions. The diastereomeric complexes formed would interfere with the one-carbon carrying role of folate in vivo. This highlights the importance of considering small molecules alongside macromolecules when determining the chemical origins of cytotoxicity of metallodrug candidates.
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Affiliation(s)
- Tom G. Scrase
- The University of Cambridge Chemical Laboratory
- Cambridge, UK
| | - Simon M. Page
- The University of Cambridge Chemical Laboratory
- Cambridge, UK
| | - Paul D. Barker
- The University of Cambridge Chemical Laboratory
- Cambridge, UK
| | - Sally R. Boss
- The University of Cambridge Chemical Laboratory
- Cambridge, UK
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41
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Abstract
Breast cancer is the most prevalent cancer in women, with over 200,000 new cases diagnosed each year. Over 70% of breast cancers express the estrogen receptor-α, and drugs targeting these receptors such as tamoxifen or Faslodex(®) often fail to cure these patients. Many estrogen receptor-positive tumors lose drug sensitivity, making endocrine resistance a major clinical problem. Recently, investigation into the molecular mechanisms of endocrine resistance has highlighted a causative role of the unfolded protein response in antiestrogen resistance. In particular, the master regulator of the unfolded protein response, GRP78, was observed to be elevated in endocrine-resistant breast cancer and directly affected antiestrogen therapy responsiveness. GRP78 was found to impact many different cellular processes that may affect breast cancer survival. Recently, various compounds have been reported to affect GRP78 activity and it may be advantageous to combine these drugs with antiestrogens to overcome endocrine therapy resistance.
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42
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Cruchter T, Harms K, Meggers E. Strain-promoted azide-alkyne cycloaddition with ruthenium(II)-azido complexes. Chemistry 2013; 19:16682-9. [PMID: 24173767 DOI: 10.1002/chem.201302502] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2013] [Indexed: 12/17/2022]
Abstract
The reactivity of an exemplary ruthenium(II)-azido complex towards non-activated, electron-deficient, and towards strain-activated alkynes at room temperature and low millimolar azide and alkyne concentrations has been investigated. Non-activated terminal and internal alkynes failed to react under such conditions, even under copper(I) catalysis conditions. In contrast, as expected, rapid cycloaddition was observed with electron-deficient dimethyl acetylenedicarboxylate (DMAD) as the dipolarophile. Since DMAD and related propargylic esters are excellent Michael acceptors and thus unsuitable for biological applications, we investigated the reactivity of the azido complex towards cycloaddition with derivatives of cyclooctyne (OCT), bicyclo[6.1.0]non-4-yne (BCN), and azadibenzocyclooctyne (ADIBO). While no reaction could be observed in the case of the less strained cyclooctyne OCT, the highly strained cyclooctynes BCN and ADIBO readily reacted with the azido complex, providing the corresponding stable triazolato complexes, which were amenable to purification by conventional silica gel column chromatography. An X-ray crystal structure of an ADIBO cycloadduct was obtained and verified that the formed 1,2,3-triazolato ligand coordinates the metal center through the central N2 atom. Importantly, the determined second-order rate constant for the ADIBO cycloaddition with the azido complex (k2=6.9 × 10(-2) M(-1) s(-1)) is comparable to the rate determined for the ADIBO cycloaddition with organic benzyl azide (k2=4.0 × 10(-1) M(-1) s(-1)). Our results demonstrate that it is possible to transfer the concept of strain-promoted azide-alkyne cycloaddition (SPAAC) from purely organic azides to metal-coordinated azido ligands. The favorable reaction kinetics for the ADIBO-azido-ligand cycloaddition and the well-proven bioorthogonality of strain-activated alkynes should pave the way for applications in living biological systems.
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Affiliation(s)
- Thomas Cruchter
- Fachbereich Chemie, Philipps-Universität Marburg, Hans-Meerwein-Strasse, 35043 Marburg (Germany), Fax: (+49) 6421-282-2189
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Targetting cancer with Ru(III/II)-phosphodiesterase inhibitor adducts: a novel approach in the treatment of cancer. Med Hypotheses 2013; 80:841-6. [PMID: 23587478 DOI: 10.1016/j.mehy.2013.03.029] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2012] [Revised: 03/03/2013] [Accepted: 03/17/2013] [Indexed: 12/20/2022]
Abstract
Lack of specificity and normal tissue toxicity are the two major limitations faced with most of the anticancer agents in current use. Due to effective biodistribution and multimodal cellular actions, during recent past, ruthenium complexes have drawn much attention as next generation anticancer agents. This is because metal center of ruthenium (Ru) effectively binds with the serum transferrin and due to higher concentration of transferrin receptors on the tumor cells, much of the circulating Ru-transferrin complexes are delivered preferentially to the tumor site. This enables Ru-complexes to become tumor cell specific and to execute their anticancer activities in a somewhat targeted manner. Also, there are evidences to suggest that inhibition of phosphodiesterases leads to increased cyclic guanosine monophosphate (cGMP) level, which in turn can evoke cell cycle arrest and can induce apoptosis in the tumor cells. In addition, phosphodiesterase inhibition led increased cGMP level may act as a potent vasodilator and thus, it is likely to enhance blood flow to the growing tumors in vivo, and thereby it can further facilitate delivery of the drugs/compounds to the tumor site. Therefore, it is hypothesized that tagging PDE inhibitors (PDEis) with Ru-complexes could be a relevant strategy to deliver Ru-complexes-PDEi adduct preferentially to the tumor site. The Ru-complex tagged entry of PDEi is speculated to initially enable the tumor cells to become a preferential recipient of such adducts followed by induction of antitumor activities shown by both, the Ru-complex & the PDEi, resulting into enhanced antitumor activities with a possibility of minimum normal tissue toxicity due to administration of such complexes.
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Sze CM, Shi Z, Khairallah GN, Feketeová L, O'Hair RAJ, Xiao Z, Donnelly PS, Wedd AG. Interaction of cisplatin and analogue Pt(en)Cl2 with the copper metallo-chaperone Atox1. Metallomics 2013; 5:946-54. [DOI: 10.1039/c3mt00082f] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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