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Jia T, Diane O, Ghosh D, Skander M, Fontaine G, Retailleau P, Poupon J, Bignon J, Moulai Siasia YM, Servajean V, Hue N, Betzer JF, Marinetti A, Bombard S. Anti-Cancer and Radio-Sensitizing Properties of New Bimetallic ( N-Heterocyclic Carbene)-Amine-Pt(II) Complexes. J Med Chem 2023; 66:6836-6848. [PMID: 37191470 DOI: 10.1021/acs.jmedchem.3c00267] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
Bioactive NHC-transition metal complexes have shown promise as anti-cancer agents, but their potential use as radiosensitizers has been neglected so far. We disclose here a new series of bimetallic platinum(II) complexes displaying NHC-type bridging ligands, (bis-NHC)[trans-Pt(RNH2)I2]2, that have been synthesized via a simple, two-step procedure. They display cytotoxicity in the micromolar range on cancerous cell lines, accumulate in cells, and bind to genomic DNA, by inducing DNA damages. Notably, these bimetallic complexes demonstrate significant radiosensitizing effects on both ovarian cells A2780 and nonsmall lung carcinoma cells H1299. Further investigations revealed that bimetallic species make irradiation-induced DNA damages more persistent by inhibiting repair mechanisms. Indeed, a higher and persistent accumulation of both γ-H2AX and 53BP1 foci post-irradiation was detected, in the presence of the NHC-Pt complexes. Overall, we provide the first in vitro evidence for the radiosensitizing properties of NHC-platinum complexes, which suggests their potential use in combined chemo-radio therapy protocols.
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Affiliation(s)
- Tao Jia
- CNRS-UMR9187, INSERM U1196, PSL-Research University, Orsay 91405, France
- CNRS-UMR9187, INSERM U1196, Université Paris Saclay, Orsay 91405, France
| | - Oumar Diane
- CNRS-UPR2301, Institut de Chimie des Substances Naturelles, Université Paris-Saclay, Gif-sur-Yvette 91198, France
| | - Deepanjan Ghosh
- CNRS-UMR9187, INSERM U1196, PSL-Research University, Orsay 91405, France
- CNRS-UMR9187, INSERM U1196, Université Paris Saclay, Orsay 91405, France
| | - Myriem Skander
- CNRS-UPR2301, Institut de Chimie des Substances Naturelles, Université Paris-Saclay, Gif-sur-Yvette 91198, France
| | - Gaelle Fontaine
- CNRS-UMR9187, INSERM U1196, PSL-Research University, Orsay 91405, France
- CNRS-UMR9187, INSERM U1196, Université Paris Saclay, Orsay 91405, France
| | - Pascal Retailleau
- CNRS-UPR2301, Institut de Chimie des Substances Naturelles, Université Paris-Saclay, Gif-sur-Yvette 91198, France
| | - Joël Poupon
- Hôpital Lariboisière, Laboratoire de Toxicologie Biologique, 2 rue Ambroise Paré, Paris 75475, France
| | - Jérôme Bignon
- CNRS-UPR2301, Institut de Chimie des Substances Naturelles, Université Paris-Saclay, Gif-sur-Yvette 91198, France
| | - Ytabelle Maga Moulai Siasia
- CNRS-UMR9187, INSERM U1196, PSL-Research University, Orsay 91405, France
- CNRS-UMR9187, INSERM U1196, Université Paris Saclay, Orsay 91405, France
| | - Vincent Servajean
- CNRS-UPR2301, Institut de Chimie des Substances Naturelles, Université Paris-Saclay, Gif-sur-Yvette 91198, France
| | - Nathalie Hue
- CNRS-UPR2301, Institut de Chimie des Substances Naturelles, Université Paris-Saclay, Gif-sur-Yvette 91198, France
| | - Jean-François Betzer
- CNRS-UPR2301, Institut de Chimie des Substances Naturelles, Université Paris-Saclay, Gif-sur-Yvette 91198, France
| | - Angela Marinetti
- CNRS-UPR2301, Institut de Chimie des Substances Naturelles, Université Paris-Saclay, Gif-sur-Yvette 91198, France
| | - Sophie Bombard
- CNRS-UMR9187, INSERM U1196, PSL-Research University, Orsay 91405, France
- CNRS-UMR9187, INSERM U1196, Université Paris Saclay, Orsay 91405, France
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2
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Impact of Hydrophobic Chains in Five-Coordinate Glucoconjugate Pt(II) Anticancer Agents. Int J Mol Sci 2023; 24:ijms24032369. [PMID: 36768690 PMCID: PMC9916762 DOI: 10.3390/ijms24032369] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2022] [Revised: 01/17/2023] [Accepted: 01/20/2023] [Indexed: 01/27/2023] Open
Abstract
This study describes new platinum(II) cationic five-coordinate complexes (1-R,R') of the formula [PtR(NHC)(dmphen)(ethene)]CF3SO3 (dmphen = 2,9-dimethyl-1,10-phenanthroline), containing in their axial positions an alkyl group R (methyl or octyl) and an imidazole-based NHC-carbene ligand with a substituent R' of variable length (methyl or octyl) on one nitrogen atom. The Pt-carbene bond is stable both in DMSO and in aqueous solvents. In DMSO, a gradual substitution of dmphen and ethene is observed, with the formation of a square planar solvated species. Octanol/water partitioning studies have revealed the order of hydrophobicity of the complexes (1-Oct,Me > 1-Oct,Oct > 1-Me,Oct > 1-Me,Me). Their biological activity was investigated against two pairs of cancer and non-cancer cell lines. The tested drugs were internalized in cancer cells and able to activate the apoptotic pathway. The reactivity of 1-Me,Me with DNA and protein model systems was also studied using UV-vis absorption spectroscopy, fluorescence, and X-ray crystallography. The compound binds DNA and interacts in various ways with the model protein lysozyme. Remarkably, structural data revealed that the complex can bind lysozyme via non-covalent interactions, retaining its five-coordinate geometry.
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Zhao S, Yang Z, Jiang G, Huang S, Bian M, Lu Y, Liu W. An overview of anticancer platinum N-heterocyclic carbene complexes. Coord Chem Rev 2021. [DOI: 10.1016/j.ccr.2021.214217] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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4
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Mollar‐Cuni A, Borja P, Martin S, Guisado‐Barrios G, Mata JA. A Platinum Molecular Complex Immobilised on the Surface of Graphene as Active Catalyst in Alkyne Hydrosilylation. Eur J Inorg Chem 2020. [DOI: 10.1002/ejic.202000356] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Andres Mollar‐Cuni
- Institute of Advanced Materials (INAM) Centro de Innovación en Química Avanzada (ORFEO‐CINQA) Universitat Jaume I Avda. Sos Baynat s/n 12071 Castellón Spain
| | - Pilar Borja
- Institute of Advanced Materials (INAM) Centro de Innovación en Química Avanzada (ORFEO‐CINQA) Universitat Jaume I Avda. Sos Baynat s/n 12071 Castellón Spain
| | - Santiago Martin
- Departamento de Química Física (Facultad de Ciencias) Instituto de Ciencias de Materiales de Aragón (ICMA) Universidad de Zaragoza‐CSIC C/Pedro Cerbuna 12 50009 Zaragoza Spain
| | - Gregorio Guisado‐Barrios
- Institute of Advanced Materials (INAM) Centro de Innovación en Química Avanzada (ORFEO‐CINQA) Universitat Jaume I Avda. Sos Baynat s/n 12071 Castellón Spain
| | - Jose A. Mata
- Institute of Advanced Materials (INAM) Centro de Innovación en Química Avanzada (ORFEO‐CINQA) Universitat Jaume I Avda. Sos Baynat s/n 12071 Castellón Spain
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5
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Karges J, Chao H, Gasser G. Synthesis, Characterization, and Biological Evaluation of the Polymeric Encapsulation of a Ruthenium(II) Polypyridine Complex with Pluronic F‐127/Poloxamer‐407 for Photodynamic Therapy Applications. Eur J Inorg Chem 2020. [DOI: 10.1002/ejic.202000545] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Johannes Karges
- Institute of Chemistry for Life and Health Sciences, Laboratory for Inorganic Chemical Biology Chimie ParisTech, PSL University, CNRS 75005 Paris France
| | - Hui Chao
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry School of Chemistry Sun Yat‐Sen University 510275 Guangzhou People's Republic of China
| | - Gilles Gasser
- Institute of Chemistry for Life and Health Sciences, Laboratory for Inorganic Chemical Biology Chimie ParisTech, PSL University, CNRS 75005 Paris France
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N-Heterocyclic Carbene Platinum(IV) as Metallodrug Candidates: Synthesis and 195Pt NMR Chemical Shift Trend. Molecules 2020; 25:molecules25143148. [PMID: 32660104 PMCID: PMC7397185 DOI: 10.3390/molecules25143148] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2020] [Revised: 07/06/2020] [Accepted: 07/08/2020] [Indexed: 11/24/2022] Open
Abstract
A series of octahedral platinum(IV) complexes functionalized with both N-heterocyclic carbene (NHC) ligands were synthesized according to a straightforward procedure and characterized. The coordination sphere around the metal was varied, investigating the influence of the substituted NHC and the amine ligand in trans position to the NHC. The influence of those structural variations on the chemical shift of the platinum center were evaluated by 195Pt NMR. This spectroscopy provided more insights on the impact of the structural changes on the electronic density at the platinum center. Investigation of the in vitro cytotoxicities of representative complexes were carried on three cancer cell lines and showed IC50 values down to the low micromolar range that compare favorably with the benchmark cisplatin or their platinum(II) counterparts bearing NHC ligands.
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7
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Annunziata A, Amoresano A, Cucciolito ME, Esposito R, Ferraro G, Iacobucci I, Imbimbo P, Lucignano R, Melchiorre M, Monti M, Scognamiglio C, Tuzi A, Monti DM, Merlino A, Ruffo F. Pt(II) versus Pt(IV) in Carbene Glycoconjugate Antitumor Agents: Minimal Structural Variations and Great Performance Changes. Inorg Chem 2020; 59:4002-4014. [PMID: 32129608 PMCID: PMC7997382 DOI: 10.1021/acs.inorgchem.9b03683] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2019] [Indexed: 12/20/2022]
Abstract
Octahedral Pt(IV) complexes (2Pt-R) containing a glycoconjugate carbene ligand were prepared and fully characterized. These complexes are structural analogues to the trigonal bipyramidal Pt(II) species (1Pt-R) recently described. Thus, an unprecedented direct comparison between the biological properties of Pt compounds with different oxidation states and almost indistinguishable structural features was performed. The stability profile of the novel Pt(IV) compounds in reference solvents was determined and compared to that of the analogous Pt(II) complexes. The uptake and antiproliferative activities of 2Pt-R and 1Pt-R were evaluated on the same panel of cell lines. DNA and protein binding properties were assessed using human serum albumin, the model protein hen egg white lysozyme, and double stranded DNA model systems by a variety of experimental techniques, including UV-vis absorption spectroscopy, fluorescence, circular dichroism, and electrospray ionization mass spectrometry. Although the compounds present similar structures, their in-solution stability, cellular uptake, and DNA binding properties are diverse. These differences may represent the basis of their different cytotoxicity and biological activity.
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Affiliation(s)
- Alfonso Annunziata
- Dipartimento di
Scienze Chimiche, Università di Napoli
Federico II, Complesso Universitario di Monte S. Angelo, via Cintia 21, 80126 Napoli, Italy
| | - Angela Amoresano
- Dipartimento di
Scienze Chimiche, Università di Napoli
Federico II, Complesso Universitario di Monte S. Angelo, via Cintia 21, 80126 Napoli, Italy
| | - Maria Elena Cucciolito
- Dipartimento di
Scienze Chimiche, Università di Napoli
Federico II, Complesso Universitario di Monte S. Angelo, via Cintia 21, 80126 Napoli, Italy
- CIRCC, via Celso Ulpiani
27, 70126 Bari, Italy
| | - Roberto Esposito
- Dipartimento di
Scienze Chimiche, Università di Napoli
Federico II, Complesso Universitario di Monte S. Angelo, via Cintia 21, 80126 Napoli, Italy
- CIRCC, via Celso Ulpiani
27, 70126 Bari, Italy
| | - Giarita Ferraro
- Dipartimento di Chimica Ugo Schiff, Università di Firenze, Sesto Fiorentino, Florence 50019, Italy
| | - Ilaria Iacobucci
- Dipartimento di
Scienze Chimiche, Università di Napoli
Federico II, Complesso Universitario di Monte S. Angelo, via Cintia 21, 80126 Napoli, Italy
| | - Paola Imbimbo
- Dipartimento di
Scienze Chimiche, Università di Napoli
Federico II, Complesso Universitario di Monte S. Angelo, via Cintia 21, 80126 Napoli, Italy
| | - Rosanna Lucignano
- Dipartimento di
Scienze Chimiche, Università di Napoli
Federico II, Complesso Universitario di Monte S. Angelo, via Cintia 21, 80126 Napoli, Italy
| | | | - Maria Monti
- Dipartimento di
Scienze Chimiche, Università di Napoli
Federico II, Complesso Universitario di Monte S. Angelo, via Cintia 21, 80126 Napoli, Italy
| | - Chiara Scognamiglio
- Dipartimento di
Scienze Chimiche, Università di Napoli
Federico II, Complesso Universitario di Monte S. Angelo, via Cintia 21, 80126 Napoli, Italy
| | - Angela Tuzi
- Dipartimento di
Scienze Chimiche, Università di Napoli
Federico II, Complesso Universitario di Monte S. Angelo, via Cintia 21, 80126 Napoli, Italy
| | - Daria Maria Monti
- Dipartimento di
Scienze Chimiche, Università di Napoli
Federico II, Complesso Universitario di Monte S. Angelo, via Cintia 21, 80126 Napoli, Italy
| | - Antonello Merlino
- Dipartimento di
Scienze Chimiche, Università di Napoli
Federico II, Complesso Universitario di Monte S. Angelo, via Cintia 21, 80126 Napoli, Italy
| | - Francesco Ruffo
- Dipartimento di
Scienze Chimiche, Università di Napoli
Federico II, Complesso Universitario di Monte S. Angelo, via Cintia 21, 80126 Napoli, Italy
- CIRCC, via Celso Ulpiani
27, 70126 Bari, Italy
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8
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Pertschi R, Hatey D, Pale P, de Frémont P, Blanc A. Synthesis, Characterization, and Catalytic Activity of Chiral NHC Platinum(II) Pyridine Dihalide Complexes. Organometallics 2020. [DOI: 10.1021/acs.organomet.9b00850] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Romain Pertschi
- Laboratoire de Synthèse, Réactivité Organique et Catalyse, Université de Strasbourg, 4 rue Blaise Pascal, CS 90032, 67081 Strasbourg, France
| | - Delphine Hatey
- Laboratoire de Synthèse, Réactivité Organique et Catalyse, Université de Strasbourg, 4 rue Blaise Pascal, CS 90032, 67081 Strasbourg, France
| | - Patrick Pale
- Laboratoire de Synthèse, Réactivité Organique et Catalyse, Université de Strasbourg, 4 rue Blaise Pascal, CS 90032, 67081 Strasbourg, France
| | - Pierre de Frémont
- Synthèse, Réactivité et Catalyse Organométalliques (UMR 7177 CNRS), Université de Strasbourg, 4 rue Blaise Pascal, CS 90032, 67081 Strasbourg, France
| | - Aurélien Blanc
- Laboratoire de Synthèse, Réactivité Organique et Catalyse, Université de Strasbourg, 4 rue Blaise Pascal, CS 90032, 67081 Strasbourg, France
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9
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Çevik-Yıldız E, Şahin N, Şahin-Bölükbaşı S. Synthesis, characterization, and investigation of antiproliferative activity of novel Ag (I)-N-Heterocyclic Carbene (NHC) compounds. J Mol Struct 2020. [DOI: 10.1016/j.molstruc.2019.126987] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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10
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Astakhov AV, Soliev SB, Gordeev EG, Chernyshev VM, Ananikov VP. Relative stabilities of M/NHC complexes (M = Ni, Pd, Pt) against R-NHC, X-NHC and X-X couplings in M(0)/M(ii) and M(ii)/M(iv) catalytic cycles: a theoretical study. Dalton Trans 2019; 48:17052-17062. [PMID: 31696883 DOI: 10.1039/c9dt03266e] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The complexes of Ni, Pd, and Pt with N-heterocyclic carbenes (NHCs) catalyze numerous organic reactions via proposed typical M0/MII catalytic cycles comprising intermediates with the metal center in (0) and (II) oxidation states. In addition, MII/MIV catalytic cycles have been proposed for a number of reactions. The catalytic intermediates in both cycles can suffer decomposition via R-NHC coupling and the side reductive elimination of the NHC ligand and R groups (R = alkyl, aryl, etc.) to give [NHC-R]+ cations. In this study, the relative stabilities of (NHC)MII(R)(X)L and (NHC)MIV(R)(X)3L intermediates (X = Cl, Br, I; L = NHC, pyridine) against R-NHC coupling and other decomposition pathways via reductive elimination reactions were evaluated theoretically. The study revealed that the R-NHC coupling represents the most favorable decomposition pathway for both types of intermediates (MII and MIV), while it is thermodynamically and kinetically more facile for the MIV complexes. The relative effects of the metal M (Ni, Pd, Pt) and ligands L and X on the R-NHC coupling for the MIV complexes were significantly stronger than that for the MII complexes. In particular, for the (NHC)2MIV(Ph)(Br)3 complexes, Ph-NHC coupling was facilitated dramatically from Pt (ΔG = -36.9 kcal mol-1, ΔG≠ = 37.5 kcal mol-1) to Pd (ΔG = -61.5 kcal mol-1, ΔG≠ = 18.3 kcal mol-1) and Ni (ΔG = -80.2 kcal mol-1, ΔG≠ = 4.7 kcal mol-1). For the MII oxidation state of the metal, the bis-NHC complexes (L = NHC) were slightly more kinetically and thermodynamically stable against R-NHC coupling than the mono-NHC complexes (L = pyridine). An inverse relation was observed for the MIV oxidation state of the metal as the (NHC)2MIV(R)(X)3 complexes were kinetically (4.3-15.9 kcal mol-1) and thermodynamically (8.0-23.2 kcal mol-1) significantly less stable than the (NHC)MIV(R)(X)3L (L = pyridine) complexes. For the NiIV and PdIV complexes, additional decomposition pathways via the reductive elimination of the NHC and X ligands to give the [NHC-X]+ cation (X-NHC coupling) or reductive elimination of the X-X molecule were found to be thermodynamically and kinetically probable. Overall, the obtained results demonstrate significant instability of regular Ni/NHC and Pd/NHC complexes (for example, not additionally stabilized by chelation) and high probability to initiate "NHC-free" catalysis in the reactions comprising MIV intermediates.
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Affiliation(s)
- Alexander V Astakhov
- Platov South-Russian State Polytechnic University (NPI), Prosveschenya 132, Novocherkassk, 346428, Russia. and Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky Prospect 47, Moscow, 119991, Russia
| | - Safarmurod B Soliev
- Platov South-Russian State Polytechnic University (NPI), Prosveschenya 132, Novocherkassk, 346428, Russia.
| | - Evgeniy G Gordeev
- Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky Prospect 47, Moscow, 119991, Russia
| | - Victor M Chernyshev
- Platov South-Russian State Polytechnic University (NPI), Prosveschenya 132, Novocherkassk, 346428, Russia. and Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky Prospect 47, Moscow, 119991, Russia
| | - Valentine P Ananikov
- Platov South-Russian State Polytechnic University (NPI), Prosveschenya 132, Novocherkassk, 346428, Russia. and Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky Prospect 47, Moscow, 119991, Russia
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11
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Bellemin-Laponnaz S. N-Heterocyclic Carbene Platinum Complexes: A Big Step Forward for Effective Antitumor Compounds. Eur J Inorg Chem 2019. [DOI: 10.1002/ejic.201900960] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Stéphane Bellemin-Laponnaz
- Institut de Physique et Chimie des Matériaux de Strasbourg; IPCMS; CNRS Université de Strasbourg; 23, rue du Loess 67034 Strasbourg France
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12
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Rehm T, Rothemund M, Dietel T, Kempe R, Schobert R. Synthesis, structures and cytotoxic effects in vitro of cis- and trans-[Pt IVCl 4(NHC) 2] complexes and their Pt II precursors. Dalton Trans 2019; 48:16358-16365. [PMID: 31624819 DOI: 10.1039/c9dt02438g] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Four new bis(N,N-dialkylbenzimidazol-2-ylidene)dichlorido platinum(ii) complexes 2 featuring N-alkyl substituents of increasing size (a: Me, b: Et, c: n-butyl, d: n-octyl) were synthesised and oxidised with PhICl2 to give the corresponding [PtIVCl4(N,N-dialkylbenzimidazol-2-ylidene)2] complexes 4 as potential anticancer prodrugs. The known bis(N,N-dibenzylimidazol-2-ylidene)dichlorido platinum(ii) complex 1 was likewise oxidised to [PtIVCl4(N,N-dibenzylimidazol-2-ylidene)2] 3. In contrast, oxidation of complexes 1 and 2 with H2O2 or hypochlorites, or exchange of chlorido for hydroxo ligands in tetrachlorido complexes 4 failed to give isolable complexes of type [PtIVCl4-n(OH)n(NHC)2]. In MTT assays the [PtIICl2(NHC)2]/[PtIVCl4(NHC)2] complex couples 1/3, 2c/4c, and trans-2c/trans-4c, bearing either N-benzyl or N-butyl substituents, each showed similar single-digit micromolar IC50 values against at least three out of five human cancer cell lines, presumably due to an intracellular reduction of the PtIV complexes to their active PtII congeners. Unlike cisplatin, whose anticancer effect requires functional p53, each of them was active both in wildtype and in p53-negative HCT116 colon carcinoma cells. In ethidium bromide saturation assays with isolated DNA, cis-(bis-NHC)PtII complexes such as 1 caused morphological DNA changes more pronounced than those initiated by cisplatin, while the corresponding cis-(bis-NHC)PtIV complexes such as 3 interacted with DNA in a less structure-modifying way.
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Affiliation(s)
- Tobias Rehm
- Organic Chemistry Laboratory, University Bayreuth, Universitaetsstrasse 30, 95440 Bayreuth, Germany.
| | - Matthias Rothemund
- Organic Chemistry Laboratory, University Bayreuth, Universitaetsstrasse 30, 95440 Bayreuth, Germany.
| | - Thomas Dietel
- Lehrstuhl fuer Anorganische Chemie II, University Bayreuth, Universitaetsstrasse 30, 95440 Bayreuth, Germany
| | - Rhett Kempe
- Lehrstuhl fuer Anorganische Chemie II, University Bayreuth, Universitaetsstrasse 30, 95440 Bayreuth, Germany
| | - Rainer Schobert
- Organic Chemistry Laboratory, University Bayreuth, Universitaetsstrasse 30, 95440 Bayreuth, Germany.
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13
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Lapierre EA, Piers WE, Lin JB, Gendy C. Synthesis and Structures of Stable Pt II and Pt IV Alkylidenes: Evidence for π-Bonding and Relativistic Stabilization. Chemistry 2019; 25:4305-4308. [PMID: 30723967 DOI: 10.1002/chem.201806065] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2018] [Indexed: 01/28/2023]
Abstract
Isolable cationic PtII and PtIV alkylidenes, proposed intermediates in catalytic organic transformations, are reported. The bonding in these species was probed by experimental, structural, spectroscopic, electrochemical and computational methods, providing direct evidence for π-bonding, the often-theorized relativistic stabilization of these species, and the influence of oxidation state.
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Affiliation(s)
- Etienne A Lapierre
- Department of Chemistry, University of Calgary, 2500 University Drive NW, Calgary, Alberta, T2N 1N4, Canada
| | - Warren E Piers
- Department of Chemistry, University of Calgary, 2500 University Drive NW, Calgary, Alberta, T2N 1N4, Canada
| | - Jian-Bin Lin
- Department of Chemistry, University of Calgary, 2500 University Drive NW, Calgary, Alberta, T2N 1N4, Canada
| | - Chris Gendy
- Department of Chemistry, University of Calgary, 2500 University Drive NW, Calgary, Alberta, T2N 1N4, Canada
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14
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Wang H, Yang X, Zhao C, Wang PG, Wang X. Glucose-conjugated platinum(IV) complexes as tumor-targeting agents: design, synthesis and biological evaluation. Bioorg Med Chem 2019; 27:1639-1645. [PMID: 30852077 DOI: 10.1016/j.bmc.2019.03.006] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2018] [Revised: 02/28/2019] [Accepted: 03/02/2019] [Indexed: 02/04/2023]
Abstract
A new series of glucose-conjugated Pt(IV) complexes that target tumor-specific glucose transporters (GLUTs) was designed, synthesized, and evaluated for their anticancer activities. All six compounds, namely, A1-A6, exhibited increased cytotoxicity that were almost six fold higher than that of oxaliplatin to MCF-7 cells. These Pt(IV) complexes can be reduced to release Pt(II) complexes and cause the death of tumor cells. Simultaneously, the glycosylated Pt(IV) complexes (30.21-91.33 μM) showed lower cytotoxicity that normal LO2 cells compared with cisplatin (5.25 μM) and oxaliplatin (8.34 μM). The intervention of phlorizin as a GLUTs inhibitor increased the IC50 value of the glycosylated Pt(IV) complexes, thereby indicating the potential GLUT transportability. The introduction of glucose moiety to Pt(IV) complexes can effectively enhance the Pt cellular uptake and DNA platination. Results suggested glucose-conjugated Pt(IV) complexes had potential for further study as new anticancer agents.
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Affiliation(s)
- Haifeng Wang
- College of Pharmacy, Tianjin Key Laboratory of Molecular Drug Research, State Key Laboratory of Elemento-organic Chemistry, Nankai University, Tianjin 300071, PR China
| | - Xiande Yang
- College of Pharmacy, Tianjin Key Laboratory of Molecular Drug Research, State Key Laboratory of Elemento-organic Chemistry, Nankai University, Tianjin 300071, PR China
| | - Caili Zhao
- College of Pharmacy, Tianjin Key Laboratory of Molecular Drug Research, State Key Laboratory of Elemento-organic Chemistry, Nankai University, Tianjin 300071, PR China
| | - Peng George Wang
- College of Pharmacy, Tianjin Key Laboratory of Molecular Drug Research, State Key Laboratory of Elemento-organic Chemistry, Nankai University, Tianjin 300071, PR China
| | - Xin Wang
- College of Pharmacy, Tianjin Key Laboratory of Molecular Drug Research, State Key Laboratory of Elemento-organic Chemistry, Nankai University, Tianjin 300071, PR China.
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15
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Fang L, Qin X, Zhao J, Gou S. Construction of Dual Stimuli-Responsive Platinum(IV) Hybrids with NQO1 Targeting Ability and Overcoming Cisplatin Resistance. Inorg Chem 2019; 58:2191-2200. [PMID: 30657321 DOI: 10.1021/acs.inorgchem.8b03386] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Quinone oxidoreductase isozyme I (NQO1) is a cytoprotective two-electron-specific reductase that highly expresses in various cancer cells. Taking NQO1 as the target, we herein report three hybrid compounds from Pt(IV) complexes and a quinone propionic acid unit. The mechanism studies showed that the hybrids could be activated by both NQO1 and ascorbic acid to release the cytotoxic Pt(II) unit, exhibiting a dual stimuli-responsive character. In the pharmacological studies, complexes 2 and 3 presented higher antitumor activity than cisplatin. More importantly, the hybrid could also overcome cisplatin resistance due to the NQO1 targeting ability, improved cellular uptake, and/or different action mechanism. Significantly, complex 3 containing a coumarin moiety could be effectively activated in NQO1-overexpressed cancer cells to "turn on" fluorescence, showing a promising visual effect in cancer cells. In vivo study revealed that both 2 and 3 exhibited higher antitumor efficacy than cisplatin in the A549 xenograft mouse model at an equimolar dose to cisplatin. In all, the hybrids may serve as promising NQO1-targeting anticancer agents.
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Affiliation(s)
- Lei Fang
- Jiangsu Province Hi-Tech Key Laboratory for Bio-Medical Research, School of Chemistry and Chemical Engineering , Southeast University , Nanjing 211189 , China.,State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources , Guangxi Normal University , Guilin 541004 , China
| | - Xiaodong Qin
- Jiangsu Province Hi-Tech Key Laboratory for Bio-Medical Research, School of Chemistry and Chemical Engineering , Southeast University , Nanjing 211189 , China
| | - Jian Zhao
- Jiangsu Province Hi-Tech Key Laboratory for Bio-Medical Research, School of Chemistry and Chemical Engineering , Southeast University , Nanjing 211189 , China
| | - Shaohua Gou
- Jiangsu Province Hi-Tech Key Laboratory for Bio-Medical Research, School of Chemistry and Chemical Engineering , Southeast University , Nanjing 211189 , China
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16
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Annunziata A, Cucciolito ME, Esposito R, Imbimbo P, Petruk G, Ferraro G, Pinto V, Tuzi A, Monti DM, Merlino A, Ruffo F. A highly efficient and selective antitumor agent based on a glucoconjugated carbene platinum(ii) complex. Dalton Trans 2019; 48:7794-7800. [DOI: 10.1039/c9dt01614g] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
A Pt(ii) complex with a glucosylated carbene shows very high in vitro cytotoxicity and selectivity toward malignant cells.
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