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Legin AA, Schintlmeister A, Sommerfeld NS, Eckhard M, Theiner S, Reipert S, Strohhofer D, Jakupec MA, Galanski MS, Wagner M, Keppler BK. Nano-scale imaging of dual stable isotope labeled oxaliplatin in human colon cancer cells reveals the nucleolus as a putative node for therapeutic effect. NANOSCALE ADVANCES 2021; 3:249-262. [PMID: 36131874 PMCID: PMC9419577 DOI: 10.1039/d0na00685h] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/19/2020] [Accepted: 11/11/2020] [Indexed: 05/04/2023]
Abstract
Oxaliplatin shows a superior clinical activity in colorectal cancer compared to cisplatin. Nevertheless, the knowledge about its cellular distribution and the mechanisms responsible for the different range of oxaliplatin-responsive tumors is far from complete. In this study, we combined highly sensitive element specific and isotope selective imaging by nanometer-scale secondary ion mass spectrometry (NanoSIMS) with transmission electron microscopy to investigate the subcellular accumulation of oxaliplatin in three human colon cancer cell lines (SW480, HCT116 wt, HCT116 OxR). Oxaliplatin bearing dual stable isotope labeled moieties, i.e. 2H-labeled diaminocyclohexane (DACH) and 13C-labeled oxalate, were applied for comparative analysis of the subcellular distribution patterns of the central metal and the ligands. In all the investigated cell lines, oxaliplatin was found to have a pronounced tendency for cytoplasmic aggregation in single membrane bound organelles, presumably related to various stages of the endocytic pathway. Moreover, nuclear structures, heterochromatin and in particular nucleoli, were affected by platinum-drug exposure. In order to explore the consequences of oxaliplatin resistance, subcellular drug distribution patterns were investigated in a pair of isogenic malignant cell lines with distinct levels of drug sensitivity (HCT116 wt and HCT116 OxR, the latter with acquired resistance to oxaliplatin). The subcellular platinum distribution was found to be similar in both cell lines, with only slightly higher accumulation in the sensitive HCT116 wt cells which is inconsistent with the resistance factor of more than 20-fold. Instead, the isotopic analysis revealed a disproportionally high accumulation of the oxalate ligand in the resistant cell line.
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Affiliation(s)
- Anton A Legin
- Institute of Inorganic Chemistry, Faculty of Chemistry, University of Vienna A-1090 Vienna Austria +43 1 4277 852601 +43 1 4277 52610
- Research Cluster "Translational Cancer Therapy Research", University of Vienna A-1090 Vienna Austria
- Research Network "Chemistry Meets Microbiology and Environmental Systems Science", University of Vienna A-1090 Vienna Austria
| | - Arno Schintlmeister
- Research Network "Chemistry Meets Microbiology and Environmental Systems Science", University of Vienna A-1090 Vienna Austria
- Division of Microbial Ecology, Large-Instrument Facility for Environmental and Isotope Mass Spectrometry, Centre for Microbiology and Environmental Systems Science, University of Vienna A-1090 Vienna Austria
| | - Nadine S Sommerfeld
- Institute of Inorganic Chemistry, Faculty of Chemistry, University of Vienna A-1090 Vienna Austria +43 1 4277 852601 +43 1 4277 52610
| | - Margret Eckhard
- Core Facility Cell Imaging and Ultrastructural Research, University of Vienna A-1090 Vienna Austria
| | - Sarah Theiner
- Institute of Inorganic Chemistry, Faculty of Chemistry, University of Vienna A-1090 Vienna Austria +43 1 4277 852601 +43 1 4277 52610
- Research Cluster "Translational Cancer Therapy Research", University of Vienna A-1090 Vienna Austria
| | - Siegfried Reipert
- Core Facility Cell Imaging and Ultrastructural Research, University of Vienna A-1090 Vienna Austria
| | - Daniel Strohhofer
- Institute of Inorganic Chemistry, Faculty of Chemistry, University of Vienna A-1090 Vienna Austria +43 1 4277 852601 +43 1 4277 52610
| | - Michael A Jakupec
- Institute of Inorganic Chemistry, Faculty of Chemistry, University of Vienna A-1090 Vienna Austria +43 1 4277 852601 +43 1 4277 52610
- Research Cluster "Translational Cancer Therapy Research", University of Vienna A-1090 Vienna Austria
- Research Network "Chemistry Meets Microbiology and Environmental Systems Science", University of Vienna A-1090 Vienna Austria
| | - Mathea S Galanski
- Institute of Inorganic Chemistry, Faculty of Chemistry, University of Vienna A-1090 Vienna Austria +43 1 4277 852601 +43 1 4277 52610
| | - Michael Wagner
- Research Network "Chemistry Meets Microbiology and Environmental Systems Science", University of Vienna A-1090 Vienna Austria
- Division of Microbial Ecology, Large-Instrument Facility for Environmental and Isotope Mass Spectrometry, Centre for Microbiology and Environmental Systems Science, University of Vienna A-1090 Vienna Austria
| | - Bernhard K Keppler
- Institute of Inorganic Chemistry, Faculty of Chemistry, University of Vienna A-1090 Vienna Austria +43 1 4277 852601 +43 1 4277 52610
- Research Cluster "Translational Cancer Therapy Research", University of Vienna A-1090 Vienna Austria
- Research Network "Chemistry Meets Microbiology and Environmental Systems Science", University of Vienna A-1090 Vienna Austria
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Sciortino G, Sánchez-Aparicio JE, Rodríguez-Guerra Pedregal J, Garribba E, Maréchal JD. Computational insight into the interaction of oxaliplatin with insulin. Metallomics 2020; 11:765-773. [PMID: 30724953 DOI: 10.1039/c8mt00341f] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
In an organism, cisplatin and its derivatives are known to interact with proteins besides their principal DNA target. These off-target interactions have major therapeutic consequences including undesired side effects, loss of bioavailability and emergence of resistance. Insulin is one of the prototypical protein targets of platinum drugs as it has been seen to be involved in bioavailability reduction and might also determine resistance in certain cancer lines. However, despite the interest in understanding the nature of the oxaliplatin-insulin adducts, no 3D models have been achieved so far. In this study, we apply our recent computational multiscale protocol optimized for bioinorganic interactions to provide structural insights into these systems. To do so, the initial structures are predicted by blind protein-metalloligand docking calculations optimized to account for a metal-containing species, and then refined using a Molecular Dynamics (MD) and Quantum Mechanics/Molecular Mechanics (QM/MM) integrated protocol. The results are consistent with experimental information obtained from fragment analysis, and also provide novel structural information like conformational changes occurring upon binding and potential effects on the biological functions of the protein. This study opens an avenue towards applying similar strategies to a wide ensemble of metallodrug-protein/peptide systems for which no structural data are available.
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Affiliation(s)
- Giuseppe Sciortino
- Departament de Química, Universitat Autònoma de Barcelona, 08193 Cerdanyola del Vallés, Barcelona, Spain.
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New Pt-NNSO core anticancer agents: Structural optimization and investigation of their anticancer activity. J Inorg Biochem 2017; 170:34-45. [PMID: 28214754 DOI: 10.1016/j.jinorgbio.2017.02.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2016] [Revised: 01/16/2017] [Accepted: 02/02/2017] [Indexed: 12/21/2022]
Abstract
A series of new platinum Pt(II) compounds possessing a bidentate leaving ligand modified from oxaliplatin has been synthesized, with one of the oxygen ligating atom substituted for a sulphur atom (resulting in a Pt-NNSO coordination core structure). The general structures are R,R-diaminocyclohexane (DACH)-Pt-(methylthio)acetic acid (K4) and DACH-Pt-(thiophenylacetic acid) (K4 derivatives). Substitution of an electron donating or withdrawing group at the ortho or para position on the phenyl ring of K4 derivatives was found to affect the complexes' stability, reactivity with the biological molecules (5'-guanosine monophosphate (5'-GMP) and L-methionine (L-Met)) and anticancer activity. 1H NMR experiments demonstrated that Pt-NNSO complexes formed a mixture of mono- and diadduct with 5'-GMP in various ratios, which are different from the classical Pt drugs (forming mainly diadduct). In addition, all of the K4 derivatives with improved lipophilicity are less deactivated by L-Met in comparison to cisplatin (CDDP) and oxaliplatin. Biological assessments showed that all Pt-NNSO complexes are less toxic than CDDP in normal porcine kidney cells and are minimally affected by drug resistance. Some of the new compounds also displayed comparable anticancer activity to CDDP or better than carboplatin in a few cancer cell lines. The lower reactivity of the Pt-NNSO compounds than CDDP towards thiol molecules, presumably leading to less efflux in resistant cancer cells, and the ability to inhibit autophagy were believed to allow the new compounds to be less affected by Pt resistance.
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Fong CW. Platinum based radiochemotherapies: Free radical mechanisms and radiotherapy sensitizers. Free Radic Biol Med 2016; 99:99-109. [PMID: 27417937 DOI: 10.1016/j.freeradbiomed.2016.07.006] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/01/2016] [Revised: 06/18/2016] [Accepted: 07/08/2016] [Indexed: 12/22/2022]
Abstract
The radiosensitizing ability of Pt drugs can in the first instance be predicted based on the ease that they undergo activation by electron attachment accompanied by structural modification prior to forming Pt-DNA adducts. Unlike cisplatin, carboplatin and nedaplatin, oxaliplatin does not undergo a facile dissociative electron transfer reaction when an electron is attached. However, oxaliplatin undergoes a facile nucleophilic assisted proton coupled electron transfer (NAPCET), which may be key element of the success of FOLFOX radiochemotherapy against certain cancers. Under acidic conditions, oxaliplatin is a superior radiosensitizer to cisplatin or carboplatin, in the presence of nucleophiles such as water, chloride ions or thiols. Oxaliplatin may also be activated as a platinating agent and radiosensitizer by a minor hydrogen radical free radical mechanism as well as the more dominant NAPCET mechanism. The radiosensitizing synergism that is shown when oxaliplatin is combined with 5-fluorouracil can be due to the formation of a π complex between the two drugs, which is more potent under acidic conditions. These factors have a bearing on Pt based chemotherapy clinical regimes as well as clinical radiochemotherapy regimes, and could be a basis for optimizing how such drug schedules are administered.
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Kathiresan S, Dhivya R, Vigneshwar M, Rajasekaran M, Ranjani J, Rajendhran J, Srinivasan S, Mugesh S, Murugan M, Athappan P, Annaraj J. Biological evaluation of redox stable cisplatin/Cu(II)-DNA adducts as potential anticancer agents. J COORD CHEM 2015. [DOI: 10.1080/00958972.2015.1105366] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Sellamuthu Kathiresan
- Department of Materials Science, School of Chemistry, Madurai Kamaraj University, Madurai, India
| | - Raman Dhivya
- Department of Materials Science, School of Chemistry, Madurai Kamaraj University, Madurai, India
| | - Murugesan Vigneshwar
- Department of Materials Science, School of Chemistry, Madurai Kamaraj University, Madurai, India
| | | | - Jyothi Ranjani
- Department of Genetics, School of Biological Sciences, Madurai Kamaraj University, Madurai, India
| | - Jeyaprakash Rajendhran
- Department of Genetics, School of Biological Sciences, Madurai Kamaraj University, Madurai, India
| | - Sankaran Srinivasan
- Department of Inorganic Chemistry, School of Chemistry, Madurai Kamaraj University, Madurai, India
- A&B Labs, Houston, TX, USA
| | - Subramanian Mugesh
- Department of Microbial Technology, School of Biological Sciences, Madurai Kamaraj University, Madurai, India
| | - Maruthamuthu Murugan
- Department of Microbial Technology, School of Biological Sciences, Madurai Kamaraj University, Madurai, India
| | - Periakaruppan Athappan
- Department of Inorganic Chemistry, School of Chemistry, Madurai Kamaraj University, Madurai, India
| | - Jamespandi Annaraj
- Department of Materials Science, School of Chemistry, Madurai Kamaraj University, Madurai, India
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Štarha P, Trávníček Z, Popa I, Dvořák Z. Synthesis, characterization and in vitro antitumor activity of platinum(II) oxalato complexes involving 7-azaindole derivatives as coligands. Molecules 2014; 19:10832-44. [PMID: 25068781 PMCID: PMC6270938 DOI: 10.3390/molecules190810832] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2014] [Revised: 07/16/2014] [Accepted: 07/17/2014] [Indexed: 11/16/2022] Open
Abstract
The platinum(II) oxalato complexes [Pt(ox)(naza)2] (1-3) were synthesized and characterized by elemental analysis (C, H, N), multinuclear NMR spectroscopy ((1)H, (13)C, (15)N, (195)Pt) and electrospray ionization mass spectrometry (ESI-MS); naza = 4-chloro-7-azaindole (4Claza; 1), 3-bromo-7-azaindole (3Braza; 2) or 4-bromo-7-azaindole (4Braza; 3). The prepared substances were screened for their in vitro antitumor activity on the osteosarcoma (HOS) and breast adenocarcinoma (MCF7) human cancer cell lines, where 2 showed moderate antitumor effect (IC50 = 27.5 μM, and 18.3 μM, respectively). The complex 2 was further tested on a panel of six others human cancer cell lines, including the malignant melanoma (G361), cervix carcinoma (HeLa), ovarian carcinoma (A2780), cisplatin-resistant ovarian carcinoma (A2780R), lung carcinoma (A549) and prostate adenocarcinoma (LNCaP). This substance was found to be moderate antitumor effective against G361 (IC50 = 17.3 μM), HeLa (IC50 = 31.8 μM) and A2780 (IC50 = 19.2 μM) cell lines. The complex 2 was also studied by NMR for its solution stability and by ESI-MS experiments for its ability to interact with biomolecules, such as cysteine, glutathione or guanosine 5'-monophosphate.
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Affiliation(s)
- Pavel Štarha
- Regional Centre of Advanced Technologies and Materials, Department of Inorganic Chemistry, Faculty of Science, Palacký University, 17. listopadu 12, CZ 77146 Olomouc, Czech Republic; E-Mails: (P.S.); (I.P.)
| | - Zdeněk Trávníček
- Regional Centre of Advanced Technologies and Materials, Department of Inorganic Chemistry, Faculty of Science, Palacký University, 17. listopadu 12, CZ 77146 Olomouc, Czech Republic; E-Mails: (P.S.); (I.P.)
- Author to whom correspondence should be addressed; E-Mail: ; Tel.: +420-585-634-352; Fax: +420-585-634-954
| | - Igor Popa
- Regional Centre of Advanced Technologies and Materials, Department of Inorganic Chemistry, Faculty of Science, Palacký University, 17. listopadu 12, CZ 77146 Olomouc, Czech Republic; E-Mails: (P.S.); (I.P.)
| | - Zdeněk Dvořák
- Regional Centre of Advanced Technologies and Materials, Department of Cell Biology and Genetics, Faculty of Science, Palacký University, Šlechtitelů 11, CZ 78371 Olomouc, Czech Republic; E-Mail:
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Lando DY, Galyuk EN, Chang CL, Hu CK. Temporal behavior of DNA thermal stability in the presence of platinum compounds. Role of monofunctional and bifunctional adducts. J Inorg Biochem 2012; 117:164-70. [DOI: 10.1016/j.jinorgbio.2012.08.018] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2012] [Revised: 08/24/2012] [Accepted: 08/28/2012] [Indexed: 10/27/2022]
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Determination of the binding sites for oxaliplatin on insulin using mass spectrometry-based approaches. Anal Bioanal Chem 2011; 401:1619-29. [DOI: 10.1007/s00216-011-5239-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2011] [Revised: 06/28/2011] [Accepted: 07/05/2011] [Indexed: 11/27/2022]
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