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Yi D, Marcelot C, Romana I, Tassé M, Fazzini PF, Peres L, Ratel-Ramond N, Decorse P, Warot-Fonrose B, Viau G, Serp P, Soulantica K. Etching suppression as a means to Pt dendritic ultrathin nanosheets by seeded growth. NANOSCALE 2023; 15:1739-1753. [PMID: 36598381 DOI: 10.1039/d2nr05105b] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
2D ultrathin metal nanostructures are emerging materials displaying distinct physical and chemical properties compared to their analogues of different dimensionalities. Nanosheets of fcc metals are intriguing, as their crystal structure does not favour a 2D configuration. Thanks to their increased surface-to-volume ratios and the optimal exposure of low-coordinated sites, 2D metal nanostructures can be advantageously exploited in catalysis. Synthesis approaches to ultrathin nanosheets of pure platinum are scarce compared to other noble metals and to Pt-based alloys. Here, we present the selective synthesis of Pt ultrathin nansosheets by a simple seeded-growth method. The most crucial point in our approach is the selective synthesis of Pt seeds comprising planar defects, a main driving force for the 2D growth of metals with fcc structure. Defect engineering is employed here, not in order to disintegrate, but for conserving the defect comprising seeds. This is achieved by in situ elimination of the principal etching agent, chloride, which is present in the PtCl2 precursor. As a result of etching suppression, twinned nuclei, that are selectively formed during the early stage of nucleation, survive and grow to multipods comprising planar defects. Using the twinned multipods as seeds for the subsequent 2D overgrowth of Pt from Pt(acac)2 yields ultrathin dendritic nanosheets, in which the planar defects are conserved. Using phenylacetylene hydrogenation as a model reaction of selective hydrogenation, we compared the performance of Pt nanosheets to that of a commercial Pt/C catalyst. The Pt nanosheets show better stability and much higher selectivity to styrene than the commercial Pt/C catalyst for comparable activity.
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Affiliation(s)
- Deliang Yi
- Laboratoire de Physique et Chimie des Nano-Objets, UMR 5215 INSA, CNRS, UPS, Université de Toulouse, F-31077 Toulouse, France.
- LCC, CNRS-UPR 8241, ENSIACET, Université de Toulouse, 31030 Toulouse, France
| | - Cécile Marcelot
- CEMES-CNRS, Université de Toulouse, CNRS, 29 rue Jeanne Marvig, 31055 Toulouse, France
| | - Idaline Romana
- LCC, CNRS-UPR 8241, ENSIACET, Université de Toulouse, 31030 Toulouse, France
| | - Marine Tassé
- Laboratoire de Chimie de Coordination du CNRS, 205 route de Narbonne, F-31077 Toulouse, France
| | - Pier-Francesco Fazzini
- Laboratoire de Physique et Chimie des Nano-Objets, UMR 5215 INSA, CNRS, UPS, Université de Toulouse, F-31077 Toulouse, France.
| | - Laurent Peres
- Laboratoire de Physique et Chimie des Nano-Objets, UMR 5215 INSA, CNRS, UPS, Université de Toulouse, F-31077 Toulouse, France.
| | - Nicolas Ratel-Ramond
- CEMES-CNRS, Université de Toulouse, CNRS, 29 rue Jeanne Marvig, 31055 Toulouse, France
| | - Philippe Decorse
- ITODYS, UMR 7086, CNRS, Université de Paris, F-75013 Paris, France
| | | | - Guillaume Viau
- Laboratoire de Physique et Chimie des Nano-Objets, UMR 5215 INSA, CNRS, UPS, Université de Toulouse, F-31077 Toulouse, France.
| | - Philippe Serp
- LCC, CNRS-UPR 8241, ENSIACET, Université de Toulouse, 31030 Toulouse, France
| | - Katerina Soulantica
- Laboratoire de Physique et Chimie des Nano-Objets, UMR 5215 INSA, CNRS, UPS, Université de Toulouse, F-31077 Toulouse, France.
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Evaluation of Heteroleptic Pt (II) β-Diketonate Complexes as Precatalysts for the Photoactivated Curing of Silicone Resins. Catalysts 2022. [DOI: 10.3390/catal12030307] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
A library of platinum (II) complexes of general formula (O,O′-β-diketonate)PtLX (L = dimethylsulfoxide, pyridine, triphenylphosphine; X = chloride, γ-acetylacetonate) has been prepared, using synthetic methodologies available in the literature. The library has been supplemented with a novel platinum (II) complex bearing a triazenido N-oxide ligand. The complexes have been characterized and tested as precatalysts for the photoactivated curing of silicone resins. Correlations have been established between the nature of the employed ligands, the ultraviolet-visible (UV-Vis) absorption spectrum of the complexes and their catalytic performance, which enable the tailored preparation of complexes with improved performance in view of possible technological applications.
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Del Coco L, Majellaro M, Boccarelli A, Cellamare S, Altomare CD, Fanizzi FP. Novel Antiproliferative Biphenyl Nicotinamide: NMR Metabolomic Study of its Effect on the MCF-7 Cell in Comparison with Cisplatin and Vinblastine. Molecules 2020; 25:E3502. [PMID: 32752035 PMCID: PMC7435671 DOI: 10.3390/molecules25153502] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2020] [Revised: 07/29/2020] [Accepted: 07/31/2020] [Indexed: 12/20/2022] Open
Abstract
A 1H-NMR-based metabolomic study was performed on MCF-7 cell lines treated with a novel nicotinamide derivative (DT-8) in comparison with two drugs characterized by a well-established mechanism of action, namely the DNA-metalating drug cisplatin (cis-diamminedichloridoplatinum(II), CDDP) and the antimitotic drug vinblastine (vinblastine, VIN). The effects of the three compounds, each one at the concentration corresponding to the IC50 value, were investigated, with respect to the controls (K), by the 1H-NMR of cells lysates and multivariate analysis (MVA) of the spectroscopic data. Relevant differences were found in the metabolic profiles of the different treatments with respect to the controls. A large overlap of the metabolic profiles in DT-8 vs. K and VIN vs. K suggests a similar biological response and mechanism of action, significantly diverse with respect to CDDP. On the other hand, DT8 seems to act by disorganizing the mitotic spindle and ultimately blocking the cell division, through a mechanism implying methionine depletion and/or S-adenosylmethionine (SAM) limitation.
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Affiliation(s)
- Laura Del Coco
- Department of Biological and Environmental Sciences and Technologies, University of Salento, Prov.le Lecce-Monteroni, I-73100 Lecce, Italy;
| | - Maria Majellaro
- Department of Pharmacy–Pharmaceutical Sciences, University of Bari, Via Orabona 4, 70125 Bari, Italy; (M.M.); (S.C.); (C.D.A.)
- Department of Organic Chemistry, Faculty of Pharmacy, Center for Research in Biological Chemistry and Molecular Materials (CiQUS), University of Santiago de Compostela, 15782 Santiago de Compostela, Spain
| | - Angelina Boccarelli
- Department of Biomedical Sciences and Human Oncology, University of Bari, Piazza Giulio Cesare 11, 70124 Bari, Italy
| | - Saverio Cellamare
- Department of Pharmacy–Pharmaceutical Sciences, University of Bari, Via Orabona 4, 70125 Bari, Italy; (M.M.); (S.C.); (C.D.A.)
| | - Cosimo Damiano Altomare
- Department of Pharmacy–Pharmaceutical Sciences, University of Bari, Via Orabona 4, 70125 Bari, Italy; (M.M.); (S.C.); (C.D.A.)
| | - Francesco Paolo Fanizzi
- Department of Biological and Environmental Sciences and Technologies, University of Salento, Prov.le Lecce-Monteroni, I-73100 Lecce, Italy;
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Berkefeld A, Reimann M, Hörner G, Kaupp M, Schubert H. C–P vs C–H Bond Cleavage of Triphenylphosphine at Platinum(0): Mechanism of Formation, Reactivity, Redox Chemistry, and NMR Chemical Shift Calculations of a μ-Phosphanido Diplatinum(II) Platform. Organometallics 2020. [DOI: 10.1021/acs.organomet.9b00807] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Andreas Berkefeld
- Institut für Anorganische Chemie, Eberhard Karls Universität Tübingen, Auf der Morgenstelle 18, 72076 Tübingen, Germany
| | - Marc Reimann
- Institut für Chemie, Theoretische Chemie − Quantenchemie, TU Berlin, Straße des 17. Juni 135, 10623 Berlin, Germany
| | - Gerald Hörner
- Anorganische Chemie IV, Universität Bayreuth, Universitätsstraße 30, 95440 Bayreuth, Germany
| | - Martin Kaupp
- Institut für Chemie, Theoretische Chemie − Quantenchemie, TU Berlin, Straße des 17. Juni 135, 10623 Berlin, Germany
| | - Hartmut Schubert
- Institut für Anorganische Chemie, Eberhard Karls Universität Tübingen, Auf der Morgenstelle 18, 72076 Tübingen, Germany
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Antonaci G, Cossa LG, Muscella A, Vetrugno C, De Pascali SA, Fanizzi FP, Marsigliante S. [Pt( O,O'-acac)(γ-acac)(DMS)] Induces Autophagy in Caki-1 Renal Cancer Cells. Biomolecules 2019; 9:biom9030092. [PMID: 30845773 PMCID: PMC6468382 DOI: 10.3390/biom9030092] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2019] [Revised: 02/23/2019] [Accepted: 02/26/2019] [Indexed: 01/12/2023] Open
Abstract
We have demonstrated the cytotoxic effects of [Pt(O,O′-acac)(γ-acac)(dimethyl sulfide (DMS))] on various immortalized cell lines, in primary cultures, and in murine xenograft models in vivo. Recently, we also showed that [Pt(O,O′-acac)(γ-acac)(DMS)] is able to kill Caki-1 renal cells both in vivo and in vitro. In the present paper, apoptotic and autophagic effects of [Pt(O,O′-acac)(γ-acac)(DMS)] and cisplatin were studied and compared using Caki-1 cancerous renal cells. The effects of cisplatin include activation of caspases, proteolysis of enzyme poly ADP ribose polymerase (PARP), control of apoptosis modulators B-cell lymphoma 2 (Bcl-2), Bcl-2-associated X protein (Bax), and BH3-interacting domain death agonist (Bid), and cell cycle arrest in G2/M phase. Conversely, [Pt(O,O′-acac)(γ-acac)(DMS)] did not induce caspase activation, nor chromatin condensation or DNA fragmentation. The effects of [Pt(O,O′-acac)(γ-acac)(DMS)] include microtubule-associated proteins 1A/1B light chain 3B (LC3)-I to LC3-II conversion, Beclin-1 and Atg-3, -4, and -5 increase, Bcl-2 decrease, and monodansylcadaverine accumulation in autophagic vacuoles. [Pt(O,O′-acac)(γ-acac)(DMS)] also modulated various kinases involved in intracellular transduction regulating cell fate. [Pt(O,O′-acac)(γ-acac)(DMS)] inhibited the phosphorylation of mammalian target of rapmycin (mTOR), p70S6K, and AKT, and increased the phosphorylation of c-Jun N-terminal kinase (JNK1/2), a kinase activity pattern consistent with autophagy induction. In conclusion, while in past reports the high cytotoxicity of [Pt(O,O′-acac)(γ-acac)(DMS)] was always attributed to its ability to trigger an apoptotic process, in this paper we show that Caki-1 cells die as a result of the induction of a strong autophagic process.
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Affiliation(s)
- Giovanna Antonaci
- Laboratory of Cell Physiology, Department of Biological and Environmental Sciences and Technologies (Di.S.Te.B.A.), University of Salento, 73100 Lecce, Italy.
| | - Luca Giulio Cossa
- Laboratory of Cell Physiology, Department of Biological and Environmental Sciences and Technologies (Di.S.Te.B.A.), University of Salento, 73100 Lecce, Italy.
| | - Antonella Muscella
- Laboratory of Cell Pathology, Department of Biological and Environmental Sciences and Technologies (Di.S.Te.B.A.), University of Salento, 73100 Lecce, Italy.
| | - Carla Vetrugno
- Laboratory of Cell Pathology, Department of Biological and Environmental Sciences and Technologies (Di.S.Te.B.A.), University of Salento, 73100 Lecce, Italy.
| | - Sandra Angelica De Pascali
- Laboratory of General Inorganic Chemistry, Department of Biological and Environmental Sciences and Technologies (Di.S.Te.B.A.), University of Salento, 73100 Lecce, Italy.
| | - Francesco Paolo Fanizzi
- Laboratory of General Inorganic Chemistry, Department of Biological and Environmental Sciences and Technologies (Di.S.Te.B.A.), University of Salento, 73100 Lecce, Italy.
| | - Santo Marsigliante
- Laboratory of Cell Physiology, Department of Biological and Environmental Sciences and Technologies (Di.S.Te.B.A.), University of Salento, 73100 Lecce, Italy.
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Response of Cisplatin Resistant Skov-3 Cells to [Pt( O,O'-Acac)(γ-Acac)(DMS)] Treatment Revealed by a Metabolomic ¹H-NMR Study. Molecules 2018; 23:molecules23092301. [PMID: 30205612 PMCID: PMC6225129 DOI: 10.3390/molecules23092301] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2018] [Revised: 09/04/2018] [Accepted: 09/06/2018] [Indexed: 01/10/2023] Open
Abstract
The novel [Pt(O,O′-acac)(γ-acac)(DMS)], Ptac2S, Pt(II) complex has recently gained increasing attention as a potential anticancer agent for its pharmacological activity shown in different tumor cell lines, studied both in vitro and in vivo. The mechanism of action of Ptac2S, operating on non-genomic targets, is known to be very different from that of cis-[PtCl2(NH3)2], cisplatin, targeting nucleic acids. In this work, we evaluated the cytotoxicity of Ptac2S on the cisplatin resistant Epithelial Ovarian Carcinoma (EOC), SKOV-3 cells, by the MTT assay. A 1H-NMR metabolomic approach coupled with multivariate statistical analysis was used for the first time for Ptac2S to figure out the biological mechanisms of action of the complex. The metabolic variations of intracellular metabolites and the composition of the corresponding extracellular culture media were compared to those of cisplatin (cells were treated at the IC50 doses of both drugs). The reported comparative metabolomic analysis revealed a very different metabolic profile between Ptac2S and cisplatin treated samples, thus confirming the different mechanism of action of Ptac2S also in the Epithelial Ovarian Carcinoma (EOC), SKOV-3 cells line. In particular, higher levels of pyruvate were observed in Ptac2S treated, with respect to cisplatin treated, cells (in both aqueous and culture media). In addition, a very different lipid expression resulted after the exposure to the two drugs (Ptac2S and cisplatin). These results suggest a possible explanation for the Ptac2S ability to circumvent cisplatin resistance in SKOV-3 cells.
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7
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Organophosphines in organoplatinum complexes: structural aspects of PtPCX2 (X = OL, NL, Cl, SL, SeL, SiL, Br or I) derivatives. TRANSIT METAL CHEM 2017. [DOI: 10.1007/s11243-017-0173-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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8
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Apoptosis by [Pt(O,O'-acac)(γ-acac)(DMS)] requires PKC-δ mediated p53 activation in malignant pleural mesothelioma. PLoS One 2017; 12:e0181114. [PMID: 28704484 PMCID: PMC5507537 DOI: 10.1371/journal.pone.0181114] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2017] [Accepted: 06/25/2017] [Indexed: 12/29/2022] Open
Abstract
Mesothelioma cancer cells have epithelioid or sarcomatoid morphology. The worst prognosis is associated with sarcomatoid phenotype and resistance to therapy is affected by cells heterogeneity. We recently showed that in ZL55 mesothelioma cell line of epithelioid origin [Pt(O,O'-acac)(γ-acac)(DMS)] (Ptac2S) has an antiproliferative effect in vitro and in vivo. Aim of this work was to extend the study on the effects of Ptac2S on ZL34 cell line, representative of sarcomatoid mesothelioma. ZL34 cells were used to assay the antitumor activity of Ptac2S in a mouse xenograft model in vivo. Then, both ZL34 and ZL55 cells were used in order to assess the involvement of p53 protein in (a) the processes underlying the sensitivity to chemotherapy and (b) the activation of various transduction proteins involved in apoptosis/survival processes. Ptac2S increases ZL34 cell death in vivo compared with cisplatin and, in vitro, Ptac2S was more efficacious than cisplatin in inducing apoptosis. In Ptac2S-treated ZL34 and ZL55 cells, p53 regulated gene products of apoptotic BAX and anti-apoptotic Bcl-2 proteins via transcriptional activation. Ptac2S activated PKC-δ and PKC-ε; their inhibition by PKC-siRNA decreased the apoptotic death of cells. PKC-δ was responsible for JNK1/2 activation that has a role in p53 activation. In addition, PKC-ε activation provoked phosphorylation of p38MAPK, concurring to apoptosis. In ZL34 cells, Ptac2S also activated PKC-α thus provoking ERK1/2 activation; inhibition of PKC-α, or ERK1/2, increased Ptac2S cytotoxicity. Results confirm that Ptac2S is a promising therapeutic agent for malignant mesothelioma, giving a substantial starting point for its further validation.
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Marzo T, De Pascali SA, Gabbiani C, Fanizzi FP, Messori L, Pratesi A. ESI-MS studies of the reactions of novel platinum(II) complexes containing O,O'-chelated acetylacetonate and sulfur ligands with selected model proteins. Biometals 2017; 30:609-614. [PMID: 28677079 DOI: 10.1007/s10534-017-0031-0] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2017] [Accepted: 06/29/2017] [Indexed: 02/05/2023]
Abstract
A group of mixed-ligand Pt(II) complexes bearing acetylacetonate and sulphur ligands were recently developed in the University of Lecce as a new class of prospective anticancer agents that manifested promising pharma-cological properties in preliminary in vitro and in vivo tests. Though modelled on the basis of cisplatin, these Pt(II) complexes turned out to exhibit a profoundly distinct mode of action as they were found to act mainly on non-genomic targets rather than on DNA. Accordingly, we have explored here their reactions with two representative model proteins through an established ESI-MS procedure with the aim to describe their general interaction mechanism with protein targets. A pronounced reactivity with the tested proteins was indeed documented; the nature of the resulting metallodrug-protein interactions could be characterised in depth in the various cases. Preferential binding to protein targets compared to DNA is supported by independent ICP-OES measurements. The implications of these findings are discussed.
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Affiliation(s)
- Tiziano Marzo
- Department of Chemistry and Industrial Chemistry, University of Pisa, Pisa, Italy.,Laboratory of Metals in Medicine (MetMed), Department of Chemistry, University of Florence, Sesto Fiorentino, Italy
| | - Sandra A De Pascali
- Laboratory of Inorganic Chemistry, Department of Biological and Environmental Sciences and Technologies (Di.S.Te.B.A.), University of Salento, Lecce, Italy
| | - Chiara Gabbiani
- Department of Chemistry and Industrial Chemistry, University of Pisa, Pisa, Italy
| | - Francesco P Fanizzi
- Laboratory of Inorganic Chemistry, Department of Biological and Environmental Sciences and Technologies (Di.S.Te.B.A.), University of Salento, Lecce, Italy
| | - Luigi Messori
- Laboratory of Metals in Medicine (MetMed), Department of Chemistry, University of Florence, Sesto Fiorentino, Italy.
| | - Alessandro Pratesi
- Laboratory of Metals in Medicine (MetMed), Department of Chemistry, University of Florence, Sesto Fiorentino, Italy.
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Muscella A, Vetrugno C, Cossa LG, Antonaci G, De Nuccio F, De Pascali SA, Fanizzi FP, Marsigliante S. In Vitro and In Vivo Antitumor Activity of [Pt(O,O'-acac)(γ-acac)(DMS)] in Malignant Pleural Mesothelioma. PLoS One 2016; 11:e0165154. [PMID: 27806086 PMCID: PMC5091852 DOI: 10.1371/journal.pone.0165154] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2016] [Accepted: 10/09/2016] [Indexed: 12/29/2022] Open
Abstract
Malignant pleural mesothelioma (MPM) is an aggressive malignancy highly resistant to chemotherapy. There is an urgent need for effective therapy inasmuch as resistance, intrinsic and acquired, to conventional therapies is common. Among Pt(II) antitumor drugs, [Pt(O,O′-acac)(γ-acac)(DMS)] (Ptac2S) has recently attracted considerable attention due to its strong in vitro and in vivo antiproliferative activity and reduced toxicity. The purpose of this study was to examine the efficacy of Ptac2S treatment in MPM. We employed the ZL55 human mesothelioma cell line in vitro and in a murine xenograft model in vivo, to test the antitumor activity of Ptac2S. Cytotoxicity assays and Western blottings of different apoptosis and survival proteins were thus performed. Ptac2S increases MPM cell death in vitro and in vivo compared with cisplatin. Ptac2S was more efficacious than cisplatin also in inducing apoptosis characterized by: (a) mitochondria depolarization, (b) increase of bax expression and its cytosol-to-mitochondria translocation and decrease of Bcl-2 expression, (c) activation of caspase-7 and -9. Ptac2S activated full-length PKC-δ and generated a PKC-δ fragment. Full-length PKC-δ translocated to the nucleus and membrane, whilst PKC-δ fragment concentrated to mitochondria. Ptac2S was also responsible for the PKC-ε activation that provoked phosphorylation of p38. Both PKC-δ and PKC-ε inhibition (by PKC–siRNA) reduced the apoptotic death of ZL55 cells. Altogether, our results confirm that Ptac2S is a promising therapeutic agent for malignant mesothelioma, providing a solid starting point for its validation as a suitable candidate for further pharmacological testing.
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Affiliation(s)
- Antonella Muscella
- Laboratory of Cell Pathology, Department of Biological and Environmental Sciences and Technologies (Di.S.Te.B.A.), University of Salento, Lecce, Italy
- * E-mail:
| | - Carla Vetrugno
- Laboratory of Cell Pathology, Department of Biological and Environmental Sciences and Technologies (Di.S.Te.B.A.), University of Salento, Lecce, Italy
| | - Luca Giulio Cossa
- Laboratory of Cell Physiology Di.S.Te.B.A., University of Salento, Lecce, Italy
| | - Giovanna Antonaci
- Laboratory of Cell Physiology Di.S.Te.B.A., University of Salento, Lecce, Italy
| | - Francesco De Nuccio
- Laboratory of Human Anatomy and Neuroscience, Di.S.Te.B.A., University of Salento, Lecce, Italy
| | | | | | - Santo Marsigliante
- Laboratory of Cell Physiology Di.S.Te.B.A., University of Salento, Lecce, Italy
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Muscella A, Vetrugno C, Biagioni F, Calabriso N, Calierno MT, Fornai F, De Pascali SA, Marsigliante S, Fanizzi FP. Antitumour and antiangiogenic activities of [Pt(O,O'-acac)(γ-acac)(DMS)] in a xenograft model of human renal cell carcinoma. Br J Pharmacol 2016; 173:2633-44. [PMID: 27351124 DOI: 10.1111/bph.13543] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2015] [Revised: 06/09/2016] [Accepted: 06/15/2016] [Indexed: 12/28/2022] Open
Abstract
BACKGROUND AND PURPOSE It is thought that the mechanism of action of anticancer chemotherapeutic agents is mainly due to a direct inhibition of tumour cell proliferation. In tumour specimens, the endothelial cell proliferation rate increases, suggesting that the therapeutic effects of anticancer agents could also be attributed to inhibition of tumour angiogenesis. Hence, we investigated the potential effects of [Pt(O,O'-acac)(γ-acac)(DMS)] ([Pt(DMS)]), a new platinum drug for non-genomic targets, on human renal carcinoma and compared them with those of the well-established anticancer drug, cisplatin. EXPERIMENTAL APPROACH Tumour growth, tumour cell proliferation and microvessel density were investigated in a xenograft model of renal cell carcinoma, developed by injecting Caki-1 cells into BALB/c nude mice. The antiangiogenic potential of compounds was also investigated using HUVECs. KEY RESULTS Treatment of the Caki-1 cells with cisplatin or [Pt(DMS)] resulted in a dose-dependent inhibition of cell survival, but the cytotoxicity of [Pt(DMS)] was approximately fivefold greater than that of cisplatin. [Pt(DMS)] was much more effective than cisplatin at inhibiting tumour growth, proliferation and angiogenesis in vivo, as well as migration, tube formation and MMP1, MMP2 and MMP9 secretion of endothelial cells in vitro. Whereas, cisplatin exerted a greater cytotoxic effect on HUVECs, but did not affect tube formation or the migration of endothelial cells. In addition, treatment of the xenograft mice with [Pt(DMS)] decreased VEGF, MMP1 and MMP2 expressions in tumours. CONCLUSIONS AND IMPLICATIONS The antiangiogenic and antitumour activities of [Pt(DMS)] provide a solid starting point for its validation as a suitable candidate for further pharmacological testing.
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Affiliation(s)
- A Muscella
- Laboratory of Cell Pathology, Department of Biological and Environmental Sciences and Technologies (Di.S.Te.B.A.), University of Salento, Lecce, Italy
| | - C Vetrugno
- Neuropathology Unit, Institute of Experimental Neurology and Division of Neuroscience, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - F Biagioni
- Laboratory of Neurobiology of Movement Disorders, Department of Molecular Pathology, I.R.C.C.S. Neuromed, Pozzilli, Italy
| | - N Calabriso
- Laboratory of Nutrigenomics and Vascular Biology, Institute of Clinical Physiology, National Research Council, Lecce, Italy
| | - M T Calierno
- Laboratory of Neurobiology of Movement Disorders, Department of Molecular Pathology, I.R.C.C.S. Neuromed, Pozzilli, Italy
| | - F Fornai
- Laboratory of Neurobiology of Movement Disorders, Department of Molecular Pathology, I.R.C.C.S. Neuromed, Pozzilli, Italy.,Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa, Pisa, Italy
| | - S A De Pascali
- Laboratory of Inorganic Chemistry, Department of Biological and Environmental Sciences and Technologies (Di.S.Te.B.A.), University of Salento, Lecce, Italy
| | - S Marsigliante
- Laboratory of Cell Physiology, Department of Biological and Environmental Sciences and Technologies (Di.S.Te.B.A.), University of Salento, Lecce, Italy
| | - F P Fanizzi
- Laboratory of Inorganic Chemistry, Department of Biological and Environmental Sciences and Technologies (Di.S.Te.B.A.), University of Salento, Lecce, Italy
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Bergamini P, Marvelli L, Spirandelli G, Gallerani E. Synthesis, characterization and antiproliferative activity of amino- and DMSO complexes of platinum(II) containing l-carnitine. Inorganica Chim Acta 2016. [DOI: 10.1016/j.ica.2015.09.033] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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14
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Bernocchi G, Fanizzi FP, De Pascali SA, Piccolini VM, Gasperini C, Insolia V, Bottone MG. Neurotoxic Effects of Platinum Compounds: Studies in vivo on Intracellular Calcium Homeostasis in the Immature Central Nervous System. TOXICS 2015; 3:224-248. [PMID: 29056659 PMCID: PMC5634691 DOI: 10.3390/toxics3020224] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/30/2015] [Revised: 06/09/2015] [Accepted: 06/09/2015] [Indexed: 02/08/2023]
Abstract
Platinum compounds cause significant clinical neurotoxicity. Several studies highlight neurological complications especially in paediatric oncology patients with Central Nervous System (CNS) and non-CNS malignancies. To understand the toxicity mechanisms of platinum drugs at cellular and molecular levels in the immature brain, which appears more vulnerable to injury than in the adult one, we compared the effects in vivo of the most used platinum compounds, i.e., cisdichlorodiammineplatinum (cisplatin, cisPt), and the new [Pt(O,O′-acac)(γ-acac)(DMS)] (PtAcacDMS). As models of developing brain areas, we have chosen the cerebellum and hippocampus dentate gyrus. Both areas show the neurogenesis events, from proliferation to differentiation and synaptogenesis, and therefore allow comparing the action of platinum compounds with DNA and non-DNA targets. Here, we focused on the changes in the intracellular calcium homeostasis within CNS architecture, using two immunohistochemical markers, the calcium buffer protein Calbindin and Plasma Membrane Calcium ATPase. From the comparison of the cisPt and PtAcacDMS effects, it emerges how essential the equilibrium and synergy between CB and PMCA1 is or how important the presence of at least one of them is to warrant the morphology and function of nervous tissue and limit neuroarchitecture damages, depending on the peculiar and intrinsic properties of the developing CNS areas.
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Affiliation(s)
- Graziella Bernocchi
- Dipartimento di Biologia e Biotecnologie "L. Spallanzani" Università di Pavia, via Ferrata 9, 27100 Pavia, Italy.
| | - Francesco P Fanizzi
- Dipartimento di Scienze e Tecnologie Biologiche e Ambientali (Di.S.Te.B.A.), Università del Salento, via provinciale Lecce-Monteroni centro Ecotekne, 73100 Lecce, Italy.
| | - Sandra A De Pascali
- Dipartimento di Scienze e Tecnologie Biologiche e Ambientali (Di.S.Te.B.A.), Università del Salento, via provinciale Lecce-Monteroni centro Ecotekne, 73100 Lecce, Italy.
| | - Valeria M Piccolini
- Dipartimento di Biologia e Biotecnologie "L. Spallanzani" Università di Pavia, via Ferrata 9, 27100 Pavia, Italy.
| | - Caterina Gasperini
- Dipartimento di Biologia e Biotecnologie "L. Spallanzani" Università di Pavia, via Ferrata 9, 27100 Pavia, Italy.
| | - Violetta Insolia
- Dipartimento di Biologia e Biotecnologie "L. Spallanzani" Università di Pavia, via Ferrata 9, 27100 Pavia, Italy.
| | - Maria Grazia Bottone
- Dipartimento di Biologia e Biotecnologie "L. Spallanzani" Università di Pavia, via Ferrata 9, 27100 Pavia, Italy.
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Tundo GR, Sbardella D, De Pascali SA, Ciaccio C, Coletta M, Fanizzi FP, Marini S. Novel Platinum(II) compounds modulate insulin-degrading enzyme activity and induce cell death in neuroblastoma cells. J Biol Inorg Chem 2015; 20:101-108. [PMID: 25450414 DOI: 10.1007/s00775-014-1217-3] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2014] [Accepted: 11/02/2014] [Indexed: 01/12/2023]
Abstract
The properties of three novel Platinum(II) compounds toward the insulin-degrading enzyme (IDE) enzymatic activity have been investigated under physiological conditions. The rationale of this study resides on previous observations that these compounds, specifically designed and synthesized by some of us, induce apoptosis in various cancer cell lines, whereas IDE has been proposed as a putative oncogene involved in neuroblastoma onset and progression. Two of these compounds, namely [PtCl(O,O'-acac)(DMSO)] and [Pt(O,O'-acac)(γ-acac)(DMS)], display a modulatory behavior, wherefore activation or inhibition of IDE activity occurs over different concentration ranges (suggesting the existence of two binding sites on the enzyme). On the other hand, [Pt(O,O'-acac)(γ-acac)(DMSO)] shows a typical competitive inhibitory pattern, characterized by a meaningful affinity constant (K i = 0.95 ± 0.21 μM). Although all three compounds induce cell death in neuroblastoma SHSY5Y cells at concentrations exceeding 2 μM, the two modulators facilitate cells' proliferation at concentrations ≤ 1.5 μM, whereas the competitive inhibitor [Pt(O,O'-acac)(γ-acac)(DMSO)] only shows a pro-apoptotic activity at all investigated concentrations. These features render the [Pt(O,O'-acac)(γ-acac)(DMSO)] a promising "lead compound" for the synthesis of IDE-specific inhibitors (not characterized yet) with therapeutic potentiality.
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Affiliation(s)
- Grazia R Tundo
- Department of Clinical Sciences and Translational Medicine, University of Roma Tor Vergata, Via Montpellier 1, 00133, Rome, Italy.,CIRCMSB, Via C. Ulpiani 27, 70125, Bari, Italy
| | - Diego Sbardella
- Department of Clinical Sciences and Translational Medicine, University of Roma Tor Vergata, Via Montpellier 1, 00133, Rome, Italy.,CIRCMSB, Via C. Ulpiani 27, 70125, Bari, Italy
| | - Sandra A De Pascali
- CIRCMSB, Via C. Ulpiani 27, 70125, Bari, Italy.,Department of Environmental Biological Sciences and Technologies (Di.S.Te.B.A.), University of Salento, Lecce, Italy
| | - Chiara Ciaccio
- Department of Clinical Sciences and Translational Medicine, University of Roma Tor Vergata, Via Montpellier 1, 00133, Rome, Italy.,CIRCMSB, Via C. Ulpiani 27, 70125, Bari, Italy
| | - Massimo Coletta
- Department of Clinical Sciences and Translational Medicine, University of Roma Tor Vergata, Via Montpellier 1, 00133, Rome, Italy.,CIRCMSB, Via C. Ulpiani 27, 70125, Bari, Italy
| | - Francesco P Fanizzi
- CIRCMSB, Via C. Ulpiani 27, 70125, Bari, Italy.,Department of Environmental Biological Sciences and Technologies (Di.S.Te.B.A.), University of Salento, Lecce, Italy
| | - Stefano Marini
- Department of Clinical Sciences and Translational Medicine, University of Roma Tor Vergata, Via Montpellier 1, 00133, Rome, Italy. .,CIRCMSB, Via C. Ulpiani 27, 70125, Bari, Italy.
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16
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Piccolini VM, Esposito A, Dal Bo V, Insolia V, Bottone MG, De Pascali SA, Fanizzi FP, Bernocchi G. Cerebellum neurotransmission during postnatal development: [Pt(O,O'-acac)(γ-acac)(DMS)] vs cisplatin and neurotoxicity. Int J Dev Neurosci 2014; 40:24-34. [PMID: 25450526 DOI: 10.1016/j.ijdevneu.2014.10.006] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2014] [Revised: 10/20/2014] [Accepted: 10/20/2014] [Indexed: 12/22/2022] Open
Abstract
Several chemotherapeutic drugs are known to cause neurotoxicity. Platinum-based agents in use or in clinical trials display neurotoxic potential accompanied by neurological complications; recent studies have identified a large number of behavioural issues in paediatric oncology patients. To understand the toxicity of platinum drugs at the molecular and cellular levels, this study compares the possible cytotoxic effects of an older platinum compound, cisplatin and a new platinum compound, [Pt(O,O'-acac)(γ-acac)(DMS)], on the CNS of postnatally developing rats, which is much more vulnerable to injury than the CNS of adult rats. Since several drugs interact with neurotransmitters during neuronal maturation, we performed immunostainings with antibodies raised against markers of glutamate and GABA, the major neurotransmitters in the cerebellum. After a single injection of cisplatin at postnatal day 10 (PD10), the labelling of Purkinje cells with the neurotransmitter markers evidenced alterations between PD11 and PD30, i.e. atrophy of the dendrite tree, changes in the distribution of synaptic contacts of parallel and climbing fibres, delay in the elimination of transient synapses on cell soma and severely impaired pinceau formation at the axon hillock. After treatment with [Pt(O,O'-acac)(γ-acac)(DMS)], the sole relevant change concerned the timing of climbing fibres elimination; the transient synapses disappearance on the Purkinje cell soma was delayed in some cells; instead, the growth of Purkinje cell dendrite tree was normal as was the formation of inhibitory synaptic contacts on these neurons. These findings add new evidence not only on the lower neurotoxicity of [Pt(O,O'-acac)(γ-acac)(DMS)] vs cisplatin but also on the involvement of neurotransmitters and relative synaptic connections in the maturation of central nerve tissue.
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Affiliation(s)
- Valeria Maria Piccolini
- Dipartimento di Biologia e Biotecnologie "L. Spallanzani" Università di Pavia, via Ferrata 9, 27100 Pavia, Italy; Istituto di Genetica Molecolare del CNR, Sezione di Istochimica e Citometria, via Ferrata 9, 27100 Pavia, Italy.
| | - Alessandra Esposito
- Dipartimento di Biologia e Biotecnologie "L. Spallanzani" Università di Pavia, via Ferrata 9, 27100 Pavia, Italy.
| | - Veronica Dal Bo
- Dipartimento di Biologia e Biotecnologie "L. Spallanzani" Università di Pavia, via Ferrata 9, 27100 Pavia, Italy.
| | - Violetta Insolia
- Dipartimento di Biologia e Biotecnologie "L. Spallanzani" Università di Pavia, via Ferrata 9, 27100 Pavia, Italy.
| | - Maria Grazia Bottone
- Dipartimento di Biologia e Biotecnologie "L. Spallanzani" Università di Pavia, via Ferrata 9, 27100 Pavia, Italy; Istituto di Genetica Molecolare del CNR, Sezione di Istochimica e Citometria, via Ferrata 9, 27100 Pavia, Italy.
| | - Sandra Angelica De Pascali
- Dipartimento di Scienze e Tecnologie Biologiche ed Ambientali, Università del Salento, 73100 Lecce, Italy.
| | - Francesco Paolo Fanizzi
- Dipartimento di Scienze e Tecnologie Biologiche ed Ambientali, Università del Salento, 73100 Lecce, Italy.
| | - Graziella Bernocchi
- Dipartimento di Biologia e Biotecnologie "L. Spallanzani" Università di Pavia, via Ferrata 9, 27100 Pavia, Italy.
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Muscella A, Vetrugno C, Calabriso N, Cossa LG, De Pascali SA, Fanizzi FP, Marsigliante S. [Pt(O,O'-acac)(γ-acac)(DMS)] alters SH-SY5Y cell migration and invasion by the inhibition of Na+/H+ exchanger isoform 1 occurring through a PKC-ε/ERK/mTOR Pathway. PLoS One 2014; 9:e112186. [PMID: 25372487 PMCID: PMC4221608 DOI: 10.1371/journal.pone.0112186] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2014] [Accepted: 10/13/2014] [Indexed: 11/19/2022] Open
Abstract
We previously showed that [Pt(O,O'-acac)(γ-acac)(DMS)] ([Pt(acac)2(DMS)]) exerted substantial cytotoxic effects in SH-SY5Y neuroblastoma cells, and decreased metalloproteases (MMPs) production and cells migration in MCF-7 breast cancer cells. The ubiquitously distributed sodium-hydrogen antiporter 1 (NHE1) is involved in motility and invasion of many solid tumours. The present study focuses on the effects of [Pt(acac)2(DMS)] in SH-SY5Y cell migration and also on the possibility that NHE1 may be involved in such effect. After sublethal [Pt(acac)2(DMS)] treatment cell migration was examined by wounding assay and cell invasion by transwell assay. NHE1 activity was measured in BCECF-loaded SH-SY5Y as the rate of Na+-dependent intracellular pH recovery in response to an acute acid pulse. Gelatin zymography for MMP-2/9 activities, Western blottings of MMPs, MAPKs, mTOR, S6 and PKCs and small interfering RNAs to PKC-ε/-δ mRNA were performed. Sublethal concentrations of [Pt(acac)2(DMS)] decreases NHE1 activity, inhibits cell migration and invasion and decreases expression and activity of MMP-2 and -9. [Pt(acac)2(DMS)] administered to SH-SY5Y cells provokes the increment of ROS, generated by NADPH oxidase, responsible for the PKC-ε and PKC-δ activation. Whilst PKC-δ activates p38/MAPK, responsible for the inhibition of MMP-2 and -9 secretion, PKC-ε activates a pathway made of ERK1/2, mTOR and S6K responsible for the inhibition of NHE1 activity and cell migration. In conclusion, we have shown a drastic impairment in tumour cell metastatization in response to inhibition of NHE1 and MMPs activities by [Pt(acac)2(DMS)] occurring through a novel mechanism mediated by PKC-δ/-ε activation.
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Affiliation(s)
- Antonella Muscella
- Cell Pathology Lab, Dipartimento di Scienze e Tecnologie Biologiche e Ambientali (Di.S.Te.B.A.), Salento University, Lecce, Italy
| | - Carla Vetrugno
- Neuropathology Unit, Istituto di Neurologia sperimentale e Divisione di Neuroscienze, Istituto Scientifico IRCCS San Raffaele (sezione di Lecce), Milano, Italy
| | - Nadia Calabriso
- Cell Physiology Lab, Dipartimento di Scienze e Tecnologie Biologiche e Ambientali (Di.S.Te.B.A.), Salento University, Lecce, Italy
| | - Luca Giulio Cossa
- Cell Physiology Lab, Dipartimento di Scienze e Tecnologie Biologiche e Ambientali (Di.S.Te.B.A.), Salento University, Lecce, Italy
| | - Sandra Angelica De Pascali
- General and Inorganic Chemistry Lab, Dipartimento di Scienze e Tecnologie Biologiche e Ambientali (Di.S.Te.B.A.), Salento University, Lecce, Italy
| | - Francesco Paolo Fanizzi
- General and Inorganic Chemistry Lab, Dipartimento di Scienze e Tecnologie Biologiche e Ambientali (Di.S.Te.B.A.), Salento University, Lecce, Italy
| | - Santo Marsigliante
- Cell Physiology Lab, Dipartimento di Scienze e Tecnologie Biologiche e Ambientali (Di.S.Te.B.A.), Salento University, Lecce, Italy
- * E-mail:
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Vetrugno C, Muscella A, Fanizzi FP, Cossa LG, Migoni D, De Pascali SA, Marsigliante S. Different apoptotic effects of [Pt(O,O'-acac)(γ-acac)(DMS)] and cisplatin on normal and cancerous human epithelial breast cells in primary culture. Br J Pharmacol 2014; 171:5139-53. [PMID: 24990093 DOI: 10.1111/bph.12831] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2013] [Revised: 06/16/2014] [Accepted: 06/24/2014] [Indexed: 01/20/2023] Open
Abstract
BACKGROUND AND PURPOSE The aim of this study was to determine whether [platinum (Pt)(O,O'-acetylacetonate (acac))(γ-acac)(dimethylsulphide (DMS))] is differentially cytotoxic in normal and cancer cells, and to measure comparative levels of cytotoxicity compared with cisplatin in the same cells. EXPERIMENTAL APPROACH We performed experiments on cancerous and normal epithelial breast cells in primary culture obtained from the same patients. The apoptotic effects [Pt(O,O'-acac)(γ-acac)(DMS)] and cisplatin in cancerous and normal breast cells were compared. KEY RESULTS Cancer cells were more sensitive to [Pt(O,O'-acac)(γ-acac)(DMS)] (IC50 = 5.22 ± 1.2 μmol·L(-1)) than normal cells (IC50 = 116.9 ± 8.8 μmol·L(-1)). However, the difference was less strong when cisplatin was used (IC50 = 96.0 ± 6.9 and 61.9 ± 6.1 μmol·L(-1) for cancer and normal cells respectively). Both compounds caused reactive oxygen species (ROS) production with different mechanisms: [Pt(O,O'-acac)(γ-acac)(DMS)] quickly activated NAD(P)H oxidase while cisplatin caused a slower formation of mitochondrial ROS. Cisplatin and [Pt(O,O'-acac)(γ-acac)(DMS)] caused activation of caspases, proteolysis of PARP and modulation of Bcl-2, Bax and Bid. [Pt(O,O'-acac)(γ-acac)(DMS)] also caused leakage of cytochrome c from the mitochondria. Overall, these processes proceeded more quickly in cells treated with [Pt(O,O'-acac)(γ-acac)(DMS)] compared with cisplatin. [Pt(O,O'-acac)(γ-acac)(DMS)] effects were faster and quantitatively greater in cancer than in normal cells. [Pt(O,O'-acac)(γ-acac)(DMS)] caused a fast decrease of mitochondrial membrane potential, especially in cancer cells. CONCLUSIONS AND IMPLICATIONS [Pt(O,O'-acac)(γ-acac)(DMS)] was specific to breast cancer cells in primary culture, and this observation makes this compound potentially more interesting than cisplatin.
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Affiliation(s)
- Carla Vetrugno
- Cell Physiology Lab, Dipartimento di Scienze e Tecnologie Biologiche e Ambientali (Di.S.Te.B.A.), Universita' del Salento, Lecce, Italy
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De Pascali SA, Muscella A, Vetrugno C, Marsigliante S, Fanizzi FP. Synthesis, characterization and cytotoxicity of novel Pt(II) κ2O,O′-acetylacetonate complexes with nitrogen ligands. Inorganica Chim Acta 2014. [DOI: 10.1016/j.ica.2013.12.018] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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20
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Synthesis, Crystal Structure, and Biological Study of PtIIComplexes with 4-Acyl-5-pyrazolones. Eur J Inorg Chem 2014. [DOI: 10.1002/ejic.201301479] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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21
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Antitumor activity of [Pt(O,O'-acac)(γ-acac)(DMS)] in mouse xenograft model of breast cancer. Cell Death Dis 2014; 5:e1014. [PMID: 24457958 PMCID: PMC4040677 DOI: 10.1038/cddis.2013.554] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2013] [Revised: 12/08/2013] [Accepted: 12/11/2013] [Indexed: 11/17/2022]
Abstract
The higher and selective cytotoxicity of [Pt(O,O′-acac)(γ-acac)(DMS)] toward cancer cell in both immortalized cell lines and in breast cancer cells in primary cultures, stimulated a pre-clinical study so as to evaluate its therapeutic potential in vivo. The efficacy of [Pt(O,O′-acac)(γ-acac)(DMS)] was assessed using a xenograft model of breast cancer developed by injection of MCF-7 cells in the flank of BALB/c nude mice. Treatment of solid tumor-bearing mice with [Pt(O,O′-acac)(γ-acac)(DMS)] induced up to 50% reduction of tumor mass compared with an average 10% inhibition recorded in cisplatin-treated animals. Thus, chemotherapy with [Pt(O,O′-acac)(γ-acac)(DMS)] was much more effective than cisplatin. We also demonstrated enhanced in vivo pharmacokinetics, biodistribution and tolerability of [Pt(O,O′-acac)(γ-acac)(DMS)] when compared with cisplatin administered in Wistar rats. Pharmacokinetics studies with [Pt(O,O′-acac)(γ-acac)(DMS)] revealed prolonged Pt persistence in systemic blood circulation and decreased nefrotoxicity and hepatotoxicity, major target sites of cisplatin toxicity. Overall, [Pt(O,O′-acac)(γ-acac)(DMS)] turned out to be extremely promising in terms of greater in vivo anticancer activity, reduced nephrotoxicity and acute toxicity compared with cisplatin.
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22
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Platinum drugs and neurotoxicity: effects on intracellular calcium homeostasis. Cell Biol Toxicol 2013; 29:339-53. [DOI: 10.1007/s10565-013-9252-3] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2013] [Accepted: 07/22/2013] [Indexed: 10/26/2022]
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23
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Arias A, Forniés J, Fortuño C, Martín A, Mastrorilli P, Todisco S, Latronico M, Gallo V. Oxidatively Induced P–O Bond Formation through Reductive Coupling between Phosphido and Acetylacetonate, 8-Hydroxyquinolinate, and Picolinate Groups. Inorg Chem 2013; 52:5493-506. [DOI: 10.1021/ic4004005] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Andersson Arias
- Departamento de Química Inorgánica,
Instituto de Síntesis Química y Catálisis Homogénea, Universidad de Zaragoza-C.S.I.C., E-50009 Zaragoza,
Spain
| | - Juan Forniés
- Departamento de Química Inorgánica,
Instituto de Síntesis Química y Catálisis Homogénea, Universidad de Zaragoza-C.S.I.C., E-50009 Zaragoza,
Spain
| | - Consuelo Fortuño
- Departamento de Química Inorgánica,
Instituto de Síntesis Química y Catálisis Homogénea, Universidad de Zaragoza-C.S.I.C., E-50009 Zaragoza,
Spain
| | - Antonio Martín
- Departamento de Química Inorgánica,
Instituto de Síntesis Química y Catálisis Homogénea, Universidad de Zaragoza-C.S.I.C., E-50009 Zaragoza,
Spain
| | - Piero Mastrorilli
- Dipartimento DICATECh del Politecnico di Bari and Istituto CNR-ICCOM, Via Orabona 4, I-70125 Bari, Italy
| | - Stefano Todisco
- Dipartimento DICATECh del Politecnico di Bari and Istituto CNR-ICCOM, Via Orabona 4, I-70125 Bari, Italy
| | - Mario Latronico
- Dipartimento DICATECh del Politecnico di Bari and Istituto CNR-ICCOM, Via Orabona 4, I-70125 Bari, Italy
| | - Vito Gallo
- Dipartimento DICATECh del Politecnico di Bari and Istituto CNR-ICCOM, Via Orabona 4, I-70125 Bari, Italy
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Abstract
The products obtained by forcing the reaction with nucleosides (guanosine, Guo, and adenosine, Ado) of potential anticancer drugs for nongenomic targets [PtCl(O,O'-acac)(L)] (L = dimethyl sulfoxide, DMSO; dimethyl sulfide, DMS), closely related to their very powerful organometallic analogues [Pt(O,O'-acac)(γ-acac)(L)], have been studied. [PtCl(O,O'-acac)(L)] and [Pt(O,O'-acac)(γ-acac)(L)] complexes were reported unreactive toward nucleobases. Aquo species [Pt(O,O'-acac)H2O(L)]+, obtained from [PtCl(O,O'-acac)(L)] by Ag+ driven coordinated Cl– removal, gave access to [Pt(O,O'-acac)(L)(nucleoside)]+ ([Pt(O,O'-acac)(DMSO)(Guo)]+, [Pt(O,O'-acac)(DMS)(Guo)]+, [Pt(O,O'-acac)(DMSO)(Ado)]+). The effect of the chelate oxygen donor acac (with respect to a chelate diammine), the role of the sulfur ligand (DMSO, DMS), and the influence of the purinic nucleoside itself on the coordinated Guo or Ado dynamic motions in [Pt(O,O'-acac)(L)(nucleoside)]+ complexes have been investigated by NMR spectroscopy. Interestingly, a slow rotation of nucleobase around the Pt–N(7) bond with formation of two rotamers was observed already at room temperature only in the case of [Pt(O,O'-acac)(DMSO)(Guo)]+. On the other hand, no hindered rotation at room temperature was detected in the analogous [Pt(O,O'-acac)(DMS)(Guo)]+ and [Pt(O,O'-acac)(DMSO)(Ado)]+ complexes. Data suggest that rotation of the nucleoside in [Pt(O,O'-acac)(L)(nucleoside)]+ is very different with respect to the analogous [Pt(diammine)(L)(nucleoside)]2+ systems, due to specific interactions between the acac chelate ligand, the DMSO, and the nucleobase.
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De Pascali SA, Lugoli F, De Donno A, Fanizzi FP. Mutagenic Tests Confirm That New Acetylacetonate Pt(II) Complexes Induce Apoptosis in Cancer Cells Interacting with Nongenomic Biological Targets. Met Based Drugs 2011; 2011:763436. [PMID: 21792272 PMCID: PMC3094815 DOI: 10.1155/2011/763436] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2010] [Revised: 01/17/2011] [Accepted: 01/24/2011] [Indexed: 02/04/2023] Open
Abstract
New platinum(II) complexes [PtCl(O,O'-acac)(L)] (1) and [Pt(O,O'-acac)(γ-acac)(L)] (2) (L = DMSO, a; DMS, b) containing a single chelated (O,O'-acac) (1), or one chelated and one σ-bonded (γ-acac) acetylacetonate (2) have been synthesized. The new Pt(II) complexes exhibited high in vitro cytotoxicity on cisplatin sensitive and resistant cell lines and showed negligible reactivity with nucleobases (Guo and 5'-GMP) but selective substitution of DMSO/DMS with soft biological nucleophiles, such as L-methionine. In order to assess the ability of the new complexes with respect to cisplatin to induce apoptosis by interaction with nongenomic targets, the Ames' test, a standard reverse mutation assay, was carried out on two Salmonella typhimurium strains (TA98 and TA100). Interestingly, the new complexes did not show the well-known mutagenic activity exhibited by cisplatin and are, therefore, able to activate apoptotic pathways without interacting with DNA.
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Affiliation(s)
- Sandra Angelica De Pascali
- Dipartimento di Scienze e Tecnologie Biologiche ed Ambientali, Università del Salento, Prov. le Lecce/Monteroni, 73100 Lecce, Italy
| | - Federica Lugoli
- Dipartimento di Scienze e Tecnologie Biologiche ed Ambientali, Università del Salento, Prov. le Lecce/Monteroni, 73100 Lecce, Italy
| | - Antonella De Donno
- Dipartimento di Scienze e Tecnologie Biologiche ed Ambientali, Università del Salento, Prov. le Lecce/Monteroni, 73100 Lecce, Italy
| | - Francesco Paolo Fanizzi
- Dipartimento di Scienze e Tecnologie Biologiche ed Ambientali, Università del Salento, Prov. le Lecce/Monteroni, 73100 Lecce, Italy
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Developing central nervous system and vulnerability to platinum compounds. CHEMOTHERAPY RESEARCH AND PRACTICE 2011; 2011:315418. [PMID: 22312552 PMCID: PMC3265252 DOI: 10.1155/2011/315418] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/01/2010] [Accepted: 12/21/2010] [Indexed: 12/12/2022]
Abstract
Comparative studies on the effects of the platinum complexes in use or in clinical trials are carried out in order to discover differences in the neurotoxic potential and the reversibility of neurotoxicity. In this paper, we summarized the current literature on neurotoxicity and chemoresistance of cisplatin (cisPt) and discussed our recent efforts on the interference of cisPt and a new platinum compound [Pt(O,O′-acac)(γ-acac)(DMS)] (PtAcacDMS), with high specific reactivity with sulphur ligands instead of nucleobases as cisPt, on some crucial events of rat postnatal cerebellum development. The acute effects of drug treatments on cell proliferation and death in the external granular layer and granule cell migration and the late effects on the dendrite growth of Purkinje cells were evaluated. Together with the demonstrated antineoplastic effectiveness in vitro, compared with cisPt, data suggest a lower neurotoxicity of PtAcacDMS, in spite of its presence in the brain that involves considerations on the blood brain barrier permeability.
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Cerri S, Piccolini VM, Santin G, Bottone MG, De Pascali SA, Migoni D, Iadarola P, Fanizzi FP, Bernocchi G. The developmental neurotoxicity study of platinum compounds. Effects of cisplatin versus a novel Pt(II) complex on rat cerebellum. Neurotoxicol Teratol 2010; 33:273-81. [PMID: 20883777 DOI: 10.1016/j.ntt.2010.09.005] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2010] [Revised: 09/16/2010] [Accepted: 09/22/2010] [Indexed: 11/28/2022]
Abstract
In the field of experimental oncology, many efforts are being carried out to search new platinum-based drugs overcoming the CNS toxicity and drug resistance. One of the adopted strategies is the synthesis of platinum compounds able to form Pt-DNA adducts different from the cisplatin ones or to react with other subcellular targets. In this context a novel Pt(II) complex, [Pt(O,O'-acac)(γ-acac)(DMS)](PtAcacDMS), was synthesized which reacts preferentially with protein thiols or thioethers. In this work we investigated the in vivo effects of cisplatin and PtAcacDMS on normal development. Moreover, to verify the dose-dependence of the effects, different groups of animals were treated with 5 μg/g or 10 μg/g body weight of cisPt and PtAcacDMS. We have focused our attention on the cerebellum because it provides a useful model system to evaluate the outcomes of perinatal treatment with chemotherapeutic agents on key CNS developmental processes such as neural cells proliferation, migration and differentiation. We have demonstrated the ability of both cisPt and PtAcacDMS to reach the brain tissue once injected. The brain platinum content after PtAcacDMS treatment was notably higher (approximately 4-fold as much) than after cisPt. The platinum accumulation in the brain was still considerable 7 days after PtAcacDMS administration. However, compared with cisplatin, PtAcacDMS induces less severe changes on fundamental events of neuroarchitecture development, such as no high apoptotic events, less altered granule cell migration and Purkinje cell dendrite growth, suggesting a low neurotoxicity of this new Pt complex for normal CNS. The mild damages could be attributable to the different subcellular target of this compound as well as to a greater efficiency of the cell repair system to recognize the drug-target adducts and to repair them. Together with the previously demonstrated antineoplastic effectiveness in vitro, the findings here reported suggest PtAcacDMS as a potential alternative to cisplatin indicating, at the same time, that the choice of platinum compounds with new subcellular targets could be a strategy to prevent neurotoxicity induced by cisplatin and overcome drug resistance induced by mutations in the intrinsic apoptotic pathway.
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Affiliation(s)
- Silvia Cerri
- Dipartimento di Biologia Animale, Laboratorio di Biologia Cellulare e Neurobiologia, Università di Pavia, via Ferrata 1, 27100 Pavia, Italy.
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