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Tada T, Mizuno Y, Shibata Y, Yasui H, Kuge Y. Application of copper (I) selective ligands for PET imaging of reactive oxygen species through metabolic trapping. Nucl Med Biol 2024; 134-135:108914. [PMID: 38733873 DOI: 10.1016/j.nucmedbio.2024.108914] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2023] [Revised: 03/29/2024] [Accepted: 04/24/2024] [Indexed: 05/13/2024]
Abstract
INTRODUCTION Reactive oxygen species (ROS) are attractive targets for clinical PET imaging. In this study, we hypothesized that PET imaging of ROS would be possible by using chelating ligands (L) that form stable complexes with copper (I) but not with copper (II), based on metabolic trapping. Namely, when [64Cu][CuI(L)2]+ is oxidized by ROS, the oxidized complex will release [64Cu]Cu2+. Then, the released [64Cu]Cu2+ will be trapped inside the cell, resulting in PET signal depending on the redox potential of ROS. To examine the potential of this novel molecular design for ROS imaging, we synthesized copper (I) complexes with bicinchoninic acid (BCA) disodium salt and bathocuproinedisulfonic acid (BCS) disodium salt and evaluated their reactivity with several kinds of ROS. In addition, the cellular uptake of [64Cu][CuI(BCS)2]3- and the stability of [64Cu][CuI(BCS)2]3- in a biological condition were also evaluated. METHODS [64Cu]Cu2+ was reduced to [64Cu]Cu+ by ascorbic acid and coordinated with BCA and BCS in the acetate buffer to synthesize [64Cu][CuI(BCA)2]3- and [64Cu][CuI(BCS)2]3-. The radiochemical yields were determined by thin-layer chromatography (TLC). After [64Cu][CuI(BCS)2]3- was incubated with hydroxyl radical, lipid peroxide, superoxide, and hydrogen peroxide, the percentage of released [64Cu]Cu2+ from the parent complex was evaluated by TLC. HT-1080 human fibrosarcoma cells were treated with 0.1 % Dimethyl sulfoxide (control), imidazole ketone erastin (IKE), or IKE + ferrostatin-1 (Fer-1). Then, the uptake of [64Cu][CuI(BCS)2]3- to HT-1080 cells in each group was evaluated as %Dose/mg protein. Lastly, [64Cu][CuI(BCS)2]3- was incubated in human plasma, and its intact ratio was determined by TLC. RESULTS The radiochemical yield of [64Cu][CuI(BCS)2]3- (86 ± 1 %) was higher than that of [64Cu][CuI(BCA)2]3- (44 ± 3 %). [64Cu][CuI(BCA)2]3- was unstable and partially decomposed on TLC. After [64Cu][CuI(BCS)2]3- was reacted with hydroxyl radical, lipid peroxide, and superoxide, 67 ± 2 %, 44 ± 13 %, and 22 ± 3 % of total radioactivity was detected as [64Cu]Cu2+, respectively. On the other hand, the reaction with hydrogen peroxide did not significantly increase the ratio of [64Cu]Cu2+ (4 ± 1 %). These results suggest that [64Cu][CuI(BCS)2]3- could be used for detecting high-redox-potential ROS such as hydroxyl radical and lipid peroxide with high selectivity. The cellular uptake values of [64Cu][CuI(BCS)2]3- in the control, IKE, and Fer-1 group were 42 ± 2, 54 ± 2, and 47 ± 5 %Dose/mg protein (n = 3), respectively, suggesting the ROS specific uptake of [64Cu][CuI(BCS)2]3-. On the other hand, the intact ratio after the incubation of [64Cu][CuI(BCS)2]3- in human plasma was 9 ± 5 %. CONCLUSION PET imaging of ROS would be possible by using a copper (I) selective ligand, based on metabolic trapping. Although improvement of the membrane permeability and the stability of copper (I) complexes is required, the present results pave the way for the development of novel 64Cu-labeled complexes for PET imaging of ROS.
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Affiliation(s)
- Tetsuro Tada
- Graduate School of Biomedical Science and Engineering, Hokkaido University, Hokkaido 060-0815, Japan
| | - Yuki Mizuno
- Central Institute of Isotope Science, Hokkaido University, Hokkaido 060-0815, Japan; Global Center for Biomedical Science and Engineering, Hokkaido University, Hokkaido 060-0815, Japan.
| | - Yuki Shibata
- Central Institute of Isotope Science, Hokkaido University, Hokkaido 060-0815, Japan
| | - Hironobu Yasui
- Faculty of Veterinary Medicine, Hokkaido University, Hokkaido 060-0818, Japan; One Health Research Center, Hokkaido University, Hokkaido 060-0818, Japan
| | - Yuji Kuge
- Central Institute of Isotope Science, Hokkaido University, Hokkaido 060-0815, Japan; Global Center for Biomedical Science and Engineering, Hokkaido University, Hokkaido 060-0815, Japan
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Martínez de Sarasa Buchaca M, de la Cruz-Martínez F, Naranjo J, Rodríguez AM, de la Torre MC, Castro-Osma JA, Sierra MA, Lara-Sánchez A. Design of New Bis(1,2,3-triazol-1-yl)methane-Based Nitrogen Ligands: Synthesis and Coordination Chemistry. Chemistry 2024; 30:e202304291. [PMID: 38490950 DOI: 10.1002/chem.202304291] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2023] [Revised: 03/04/2024] [Accepted: 03/15/2024] [Indexed: 03/17/2024]
Abstract
The reaction between bis(1,2,3-triazol-1-yl)methane derivatives and nBuLi and various aldehydes, yielded novel neutral ligand precursors incorporating alcohol functional groups. The resulting compounds exhibited distinct characteristics depending on the steric hindrance of the aldehyde employed. In instances where aromatic aldehydes were utilized, functionalization occurred at the methine group bridging both triazole rings. Conversely, the use of pivalic aldehyde prompted functionalization at the C5 position of the triazole ring. These compounds were subsequently employed as ligand precursors in the synthesis of organometallic aluminum and zinc complexes, yielding dinuclear complexes with high efficiency. The structural elucidation of all compounds was accomplished through spectroscopic methods and validated by X-ray crystallography. Preliminary catalytic investigations into the coupling reaction of cyclohexene oxide and CO2 revealed that aluminum and zinc complexes catalyzed the selective formation of polyether and polycarbonate materials, respectively.
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Affiliation(s)
- Marc Martínez de Sarasa Buchaca
- Universidad de Castilla-La Mancha-Centro de Innovación en Química Avanzada (ORFEO-CINQA), Facultad de Ciencias y Tecnologías Químicas and Instituto Regional de Investigación Científica Aplicada-IRICA, 13071-Ciudad, Real, Spain
| | - Felipe de la Cruz-Martínez
- Universidad de Castilla-La Mancha-Centro de Innovación en Química Avanzada (ORFEO-CINQA), Facultad de Farmacia and Instituto Regional de Investigación Científica Aplicada-IRICA, 02071-, Albacete, Spain
| | - Jesús Naranjo
- Universidad de Castilla-La Mancha-Centro de Innovación en Química Avanzada (ORFEO-CINQA), Facultad de Ciencias y Tecnologías Químicas and Instituto Regional de Investigación Científica Aplicada-IRICA, 13071-Ciudad, Real, Spain
| | - Ana M Rodríguez
- Universidad de Castilla-La Mancha-Centro de Innovación en Química Avanzada (ORFEO-CINQA), Facultad de Ciencias y Tecnologías Químicas and Instituto Regional de Investigación Científica Aplicada-IRICA, 13071-Ciudad, Real, Spain
| | - María C de la Torre
- Instituto de Química Orgánica General Consejo, Superior de Investigaciones Científicas (CSIC), Juan de la Cierva, 3, 28006, -Madrid, Spain
| | - José A Castro-Osma
- Universidad de Castilla-La Mancha-Centro de Innovación en Química Avanzada (ORFEO-CINQA), Facultad de Farmacia and Instituto Regional de Investigación Científica Aplicada-IRICA, 02071-, Albacete, Spain
| | - Miguel A Sierra
- Departamento de Química Orgánica and Centro de Innovación en Química Avanzada (ORFEO-CINQA), Facultad de Química, Universidad Complutense de Madrid, 28040, -Madrid, Spain
| | - Agustín Lara-Sánchez
- Universidad de Castilla-La Mancha-Centro de Innovación en Química Avanzada (ORFEO-CINQA), Facultad de Ciencias y Tecnologías Químicas and Instituto Regional de Investigación Científica Aplicada-IRICA, 13071-Ciudad, Real, Spain
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Baklouti L, Mellah B, Koko WS. Complexing Properties of Synthesized 1,3,5-Triaza-7-Phosphaadamantane Derivatives Towards Some Lanthanides and Transition Metal Cations With Significant Antimicrobial and Antioxidant Activities. Dose Response 2023; 21:15593258231216274. [PMID: 38022901 PMCID: PMC10655660 DOI: 10.1177/15593258231216274] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2022] [Accepted: 10/31/2023] [Indexed: 12/01/2023] Open
Abstract
The synthesis of new water-soluble N-alkylated derivatives of 1,3,5-triaza-7-phosphaadamantane is presented. Ru(PPh3)2Cl2 has been used to react with 1-(4-nitrobenzyl)-3,5-triaza-1-azonia-7-phosphaadamantane bromide (PTAR). By using elemental analysis, NMR, and IR spectroscopy, the obtained compounds were identified. The UV-visible absorption spectroscopy has been used to monitor the complexation of various transition metal cations. Studies on conductivity have been utilized to validate the complexes' stoichiometries. Using the disc diffusion method, five bacteria strains were used for the study of the antimicrobial activity of compounds 1-3. All tested pathogens, including M luteus LB 141107, were found to have strong biologic activity against the compounds tested in this study. Additionally, DPPH (2,2-diphenyl-1-picrylhydrazyl) has been tested for its ability to scavenge hydrogen peroxide and free radicals. According to our results, these compounds exhibit excellent radical scavenging properties.
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Affiliation(s)
- Lassaad Baklouti
- Laboratory of Applied Chemistry and Natural Substances Resources and Environment, Faculty of Sciences, University of Carthage, Bizerta, 7021, Tunisia
| | - Besma Mellah
- National Center of Researches in Material Sciences (CNRSM), Soliman, 2050, Tunisia
| | - Waleed S. Koko
- Department of Science Laboratories, College of Science and Arts, Qassim University, Ar Rass, Saudi Arabia, 51921
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Shahabadi N, Hadidi S. Cu(I)-Phospine complex exhibits temperature-dependent DNA intercalative binding: Insights from spectroscopic and molecular modeling studies. Inorganica Chim Acta 2022. [DOI: 10.1016/j.ica.2022.121192] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Gabrielli S, Pellei M, Venditti I, Fratoddi I, Battocchio C, Iucci G, Schiesaro I, Meneghini C, Palmieri A, Marcantoni E, Bagnarelli L, Vallesi R, Santini C. Development of new and efficient copper(II) complexes of hexyl bis(pyrazolyl)acetate ligands as catalysts for allylic oxidation. Dalton Trans 2020; 49:15622-15632. [PMID: 33095220 DOI: 10.1039/d0dt02952a] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
In this study, two new hexyl bis(pyrazol-1-yl)acetate ligands and related copper(ii) complexes were prepared and fully characterized in the solid state and in solution. Their electronic and molecular structures were investigated by X-ray photoelectron spectroscopy and near edge X-ray absorption; their ligand molecular structural stability upon coordination to copper was also investigated. The Cu(ii) complexes were studied as new catalysts in copper-catalyzed C-H oxidation for allylic functionalization (the Kharasch-Sosnovsky reaction) avoiding the use of any external reducing agents. Using 5 mol% of these catalysts and tert-butylperoxybenzoate as the oxidant, allylic benzoates were obtained in up to 90% yield: the general reaction time was decreased to 6 h and a 5 to 1 ratio of the alkene and tert-butylperoxybenzoate was used to overcome the two most important limitations on their use in chemistry.
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Affiliation(s)
- Serena Gabrielli
- School of Science and Technology, Chemistry Division, University of Camerino, via S. Agostino 1, 62032 Camerino, Macerata, Italy.
| | - Maura Pellei
- School of Science and Technology, Chemistry Division, University of Camerino, via S. Agostino 1, 62032 Camerino, Macerata, Italy.
| | - Iole Venditti
- Science Department, Roma Tre University, via della Vasca Navale 79, 00146, Rome, Italy
| | - Ilaria Fratoddi
- Chemistry Department, Sapienza University of Rome, p.le Aldo Moro 5, 00185 Rome, Italy
| | - Chiara Battocchio
- Science Department, Roma Tre University, via della Vasca Navale 79, 00146, Rome, Italy
| | - Giovanna Iucci
- Science Department, Roma Tre University, via della Vasca Navale 79, 00146, Rome, Italy
| | - Irene Schiesaro
- Science Department, Roma Tre University, via della Vasca Navale 79, 00146, Rome, Italy
| | - Carlo Meneghini
- Science Department, Roma Tre University, via della Vasca Navale 79, 00146, Rome, Italy
| | - Alessandro Palmieri
- School of Science and Technology, Chemistry Division, University of Camerino, via S. Agostino 1, 62032 Camerino, Macerata, Italy.
| | - Enrico Marcantoni
- School of Science and Technology, Chemistry Division, University of Camerino, via S. Agostino 1, 62032 Camerino, Macerata, Italy.
| | - Luca Bagnarelli
- School of Science and Technology, Chemistry Division, University of Camerino, via S. Agostino 1, 62032 Camerino, Macerata, Italy.
| | - Riccardo Vallesi
- School of Science and Technology, Chemistry Division, University of Camerino, via S. Agostino 1, 62032 Camerino, Macerata, Italy.
| | - Carlo Santini
- School of Science and Technology, Chemistry Division, University of Camerino, via S. Agostino 1, 62032 Camerino, Macerata, Italy.
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Synthesis and Cytotoxic Activity Evaluation of New Cu(I) Complexes of Bis(pyrazol-1-yl) Acetate Ligands Functionalized with an NMDA Receptor Antagonist. Int J Mol Sci 2020; 21:ijms21072616. [PMID: 32283777 PMCID: PMC7178194 DOI: 10.3390/ijms21072616] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2020] [Revised: 04/01/2020] [Accepted: 04/06/2020] [Indexed: 12/13/2022] Open
Abstract
In the present article, copper(I) complexes of bis(pyrazol-1-yl) carboxylic acid (LH), bis(3,5-dimethylpyrazol-1-yl) carboxylic acid (L2H), and bis(pyrazol-1-yl) acetates conjugated with an N-methyl-d-aspartate (NMDA) receptor antagonist (LNMDA or L2NMDA) and phosphane ligands (triphenylphosphine or 1,3,5-triaza-7-phosphaadamantane) were synthesized. The selection of an NMDA antagonist for the coupling with LH and L2H was suggested by the observation that NMDA receptors are expressed and play a role in different types of cancer models. All the new complexes showed a significant antitumor activity on a panel of human tumor cell lines of different histology, with cisplatin-sensitive, cisplatin-resistant, or multi-drug-resistant phenotype. Their half maximal inhibitory concentration (IC50) values were in the low- and sub-micromolar range and, in general, significantly lower than that of cisplatin. Interestingly, the fact that all the complexes proved to be significantly more active than cisplatin even in three-dimensional (3D) spheroids of H157 and BxPC3 cancer cells increased the relevance of the in vitro results. Finally, morphological analysis revealed that the most representative complex 8 induced a massive swelling of the endoplasmic reticulum (ER) membrane, which is a clear sign of ER stress.
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Jayakumar S, Mahendiran D, Arumai Selvan D, Kalilur Rahiman A. Bis(imidazol-1-yl)methane-based heteroscorpionate metal(II) complexes: Theoretical, antimicrobial, antioxidant, in vitro cytotoxicity and c-Met tyrosine kinase studies. J Mol Struct 2019. [DOI: 10.1016/j.molstruc.2019.06.088] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Syntheses and Biological Studies of Cu(II) Complexes Bearing Bis(pyrazol-1-yl)- and Bis(triazol-1-yl)-acetato Heteroscorpionate Ligands. Molecules 2019; 24:molecules24091761. [PMID: 31067640 PMCID: PMC6539868 DOI: 10.3390/molecules24091761] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2019] [Revised: 04/29/2019] [Accepted: 05/03/2019] [Indexed: 11/16/2022] Open
Abstract
Copper(II) complexes of bis(pyrazol-1-yl)- and bis(triazol-1-yl)-acetate heteroscorpionate ligands have been synthesized. The copper(II) complexes [HC(COOH)(pzMe2)2]Cu[HC(COO)(pzMe2)2]·ClO4, [HC(COOH)(pz)2]2Cu(ClO4)2 (pzMe2 = 3,5-dimethylpyrazole; pz = pyrazole) were prepared by the reaction of Cu(ClO4)2·6H2O with bis(3,5-dimethylpyrazol-1-yl)acetic acid (HC(COOH)(pzMe2)2) and bis(pyrazol-1-yl)acetic acid (HC(COOH)(pz)2) ligands in ethanol solution. The copper(II) complex [HC(COOH)(tz)2]2Cu(ClO4)2·CH3OH (tz = 1,2,4-triazole) was prepared by the reaction of Cu(ClO4)2·6H2O with bis(1,2,4-triazol-1-yl)acetic acid (HC(COOH)(tz)2) ligand in methanol solution. The synthesized Cu(II) complexes, as well as the corresponding uncoordinated ligands, were evaluated for their cytotoxic activity in monolayer and 3D spheroid cancer cell cultures with different Pt(II)-sensitivity. The results showed that [HC(COOH)(pzMe2)2]Cu[HC(COO)(pzMe2)2]·ClO4 was active against cancer cell lines derived from solid tumors at low IC50 and this effect was retained in the spheroid model. Structure and ultra-structure changes of treated cancer cells analyzed by Transmission Electron Microscopy (TEM) highlighted the induction of a cytoplasmic vacuolization, thus suggesting paraptotic-like cancer cell death triggering.
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Thermodynamic stability and structure in aqueous solution of the [Cu(PTA) 4] + complex (PTA = aminophosphine‑1,3,5‑triaza‑7‑phosphaadamantane). J Inorg Biochem 2018; 188:50-61. [PMID: 30121398 DOI: 10.1016/j.jinorgbio.2018.08.008] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2018] [Revised: 06/25/2018] [Accepted: 08/08/2018] [Indexed: 01/05/2023]
Abstract
The chemistry of copper(I) with water-soluble phosphines is an emergent area of study which has the objective of finding ligands that stabilize copper in its lower oxidation state. Cu(I) has been found relevant in the mechanism of copper transports into cells, and the accessibility of this oxidation state has implications in oxidative stress processes. For these reasons the possibility to deal with stable, water soluble copper(I) is an attractive approach for devising new biologically relevant metal-based drugs and chelating agents. Here we present the X-ray absorption spectroscopy (XAS) and UV-visible spectrophotometric study of the [Cu(PTA)4]BF4 complex (PTA = aminophosphine‑1,3,5‑triaza‑7‑phosphaadamantane). In particular, we have studied the stability of the [Cu(PTA)n]+ species (n = 2-4) in aqueous medium, and their speciation as a function of the total [Cu(PTA)4]BF4 concentration by means of competitive UV-visible spectrophotometric titrations using metallochromic indicators. Also, the structure in solution of the Cu(I)/PTA species and the nature of the first coordination sphere of the metal were studied by transformed XAS. Both techniques allowed to study samples with total [Cu(PTA)4]BF4 concentration down to 68-74 μM, possibly relevant for biological applications. Overall, our data suggest that the [Cu(PTA)n]+ species are stable in solution, among which [Cu(PTA)2]+ has a remarkable thermodynamic stability. The tendency of this last complex to form adducts with N-donor ligands is demonstrated by the spectrophotometric data. The biological relevance of PTA towards Cu(I), especially in terms of chemotreatments and chelation therapy, is discussed on the basis of the speciation model the Cu(I)/PTA system.
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Pellei M, Gandin V, Cimarelli C, Quaglia W, Mosca N, Bagnarelli L, Marzano C, Santini C. Syntheses and biological studies of nitroimidazole conjugated heteroscorpionate ligands and related Cu(I) and Cu(II) complexes. J Inorg Biochem 2018; 187:33-40. [PMID: 30053534 DOI: 10.1016/j.jinorgbio.2018.07.008] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2018] [Revised: 07/04/2018] [Accepted: 07/18/2018] [Indexed: 12/18/2022]
Abstract
Copper(I) and copper(II) complexes of 5-nitroimidazole conjugated heteroscorpionate ligands have been synthesized. In particular, the new 2,2-bis(pyrazol-1-yl)-N-(2-(2-methyl-5-nitro-1H-imidazol-1-yl)ethyl)acetamide ligand (LHMN) was synthesized by direct coupling of preformed side chain acid with 5-nitroimidazole and its coordination chemistry was investigated towards Cu(I) and Cu(II) acceptors and compared with that of the related 2,2-bis(3,5-dimethyl-1-H-pyrazol-1-yl)-N-(2-(2-methyl-5-nitro-1H-imidazol-1-yl)ethyl)acetamide ligand (LMeMN). The copper(II) complexes {[(LMeMN)2Cu]Cl2} and {[(LHMN)2Cu]Cl2} were prepared by the reaction of CuCl2·2H2O with LHMN or LMeMN ligands in methanol solution. The water soluble copper(I) complexes {[(LMeMN)Cu(PTA)2]}(PF6) and {[(LHMN)Cu(PTA)2]}(PF6) were prepared by the reaction of Cu(CH3CN)4PF6 and 1,3,5-triaza-7-phosphaadamantane (PTA) with LHMN or LMeMN ligands in acetonitrile solution. The new Cu(I) and Cu(II) complexes as well as the corresponding uncoordinated ligands were evaluated for their cytotoxic activity against 2D monolayer cultures of multiple human cancer cell lines and 3D-cultured HCT-15 colon cancer spheroids. Morphological analysis by Transmission Electron Microscopy (TEM) revealed the induction of a massive cytoplasmic vacuolization consistent with a paraptotic-like cancer cell death.
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Affiliation(s)
- Maura Pellei
- School of Science and Technology, Chemistry Division, University of Camerino, via S. Agostino 1, 62032 Camerino, Macerata, Italy.
| | - Valentina Gandin
- Department of Pharmaceutical and Pharmacological Sciences, University of Padova, via Marzolo 5, 35131 Padova, Italy.
| | - Cristina Cimarelli
- School of Science and Technology, Chemistry Division, University of Camerino, via S. Agostino 1, 62032 Camerino, Macerata, Italy
| | - Wilma Quaglia
- School of Pharmacy, Medicinal Chemistry Unit, University of Camerino, Via S. Agostino 1, 62032 Camerino, Macerata, Italy
| | - Nello Mosca
- School of Science and Technology, Chemistry Division, University of Camerino, via S. Agostino 1, 62032 Camerino, Macerata, Italy
| | - Luca Bagnarelli
- School of Science and Technology, Chemistry Division, University of Camerino, via S. Agostino 1, 62032 Camerino, Macerata, Italy
| | - Cristina Marzano
- Department of Pharmaceutical and Pharmacological Sciences, University of Padova, via Marzolo 5, 35131 Padova, Italy
| | - Carlo Santini
- School of Science and Technology, Chemistry Division, University of Camerino, via S. Agostino 1, 62032 Camerino, Macerata, Italy
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Pellei M, Gandin V, Marzano C, Marinelli M, Del Bello F, Santini C. The first water‐soluble copper(I) complexes bearing sulfonated imidazole‐ and benzimidazole‐derived N‐heterocyclic carbenes: Synthesis and anticancer studies. Appl Organomet Chem 2017. [DOI: 10.1002/aoc.4185] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Maura Pellei
- School of Science and Technology, Chemistry DivisionUniversity of Camerino Via S. Agostino 1 62032 Camerino Macerata Italy
| | - Valentina Gandin
- Department of Pharmaceutical and Pharmacological SciencesUniversity of Padova Via Marzolo 5 35131 Padova Italy
| | - Cristina Marzano
- Department of Pharmaceutical and Pharmacological SciencesUniversity of Padova Via Marzolo 5 35131 Padova Italy
| | - Marika Marinelli
- School of Science and Technology, Chemistry DivisionUniversity of Camerino Via S. Agostino 1 62032 Camerino Macerata Italy
| | - Fabio Del Bello
- School of Pharmacy, Medicinal Chemistry UnitUniversity of Camerino Via S. Agostino 1 62032 Camerino Macerata Italy
| | - Carlo Santini
- School of Science and Technology, Chemistry DivisionUniversity of Camerino Via S. Agostino 1 62032 Camerino Macerata Italy
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Jayakumar S, Mahendiran D, Viswanathan V, Velmurugan D, Kalilur Rahiman A. Heteroscorpionate‐based heteroleptic copper(II) complexes: Antioxidant, molecular docking and
in vitro
cytotoxicity studies. Appl Organomet Chem 2017. [DOI: 10.1002/aoc.3809] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
- S. Jayakumar
- Post‐Graduate and Research Department of ChemistryThe New College (Autonomous) Chennai 600 014 India
- Department of ChemistryMisrimal Navajee Munoth Jain Engineering College Thoraipakkam, Chennai 600 097 India
| | - D. Mahendiran
- Post‐Graduate and Research Department of ChemistryThe New College (Autonomous) Chennai 600 014 India
| | - V. Viswanathan
- CAS in Crystallography and BiophysicsUniversity of Madras, Guindy Campus Chennai 600 025 India
| | - D. Velmurugan
- CAS in Crystallography and BiophysicsUniversity of Madras, Guindy Campus Chennai 600 025 India
| | - A. Kalilur Rahiman
- Post‐Graduate and Research Department of ChemistryThe New College (Autonomous) Chennai 600 014 India
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The hydridotris(3-nitro-1,2,4-triazol-1-yl)borate, a new nitro-substituted electron withdrawing polydentate “scorpionate”-type ligand and related copper and silver phosphane complexes. Polyhedron 2017. [DOI: 10.1016/j.poly.2016.09.051] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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14
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Tisato F, Forrer D, Tamburini S, Vittadini A, Traldi P, Porchia M. Interaction products of cytotoxic Cu(I) complexes with different solvent mixtures: an electrospray ionization mass spectrometry and density functional theory study. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2017; 31:179-192. [PMID: 27806439 DOI: 10.1002/rcm.7781] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/29/2016] [Revised: 10/28/2016] [Accepted: 10/28/2016] [Indexed: 06/06/2023]
Abstract
RATIONALE [Cu(P)4 ][BF4 ]-type complexes (P = tertiary phosphine) have shown significant antitumor activity. This biological property appears to be activated via formation of coordinative unsaturated [Cu(P)n ]+ species (n < 4), that may interact with various molecules starting from the solvent(s) in which they are dissolved. Aim of our study was to investigate the interaction of these species with different solvent mixtures. METHODS The interaction has been investigated by electrospray ionization mass spectrometry, and the interaction products have been characterized by multiple collisional experiments, using an ion trap mass instrument. Density functional theory (DFT) calculation studies, using a meta-hybrid exchange correlation (xc) functional and an implicit solvent model, were employed to investigate the equilibrium distribution of species in solution. RESULTS Depending on the nature of the solvent mixture and coordinated phosphine, three [Cu(P)4 ][BF4 ]-type complexes undergo dissociation with formation of [Cu(P)2 ]+ , [Cu(P)(solv)]+ and [Cu(solv)2 ]+ species (solv = solvent). Preferred collisional-induced fragmentation pathways provide qualitative information on the selectivity of [Cu(P)n ]+ for specific solvents and donor atoms. Formation free energies and equilibrium constants pertaining to [CuI (PTA)n ]+ , [CuI/II (solv)n ]m+ (n ≤ 4; m = 1, 2) and [CuI (PTA)2-k (sol)k ]+ (k = 1, 2) provide a comprehensive picture of equilibria in solution. CONCLUSIONS Dimethyl sulfoxide (DMSO) and acetonitrile (MeCN) strongly affect [Cu(P)n ]+ assemblies producing mixed-ligand [Cu(P)(DMSO)]+ and [Cu(P)(MeCN)]+ species. Excess of both DMSO and MeCN solvents are able to fully displace coordinated phosphines giving [Cu(solv)2 ]+ -type adducts. The presence of phosphines in the native complex is mandatory to retain the reduced oxidation state of copper. Instead, the more labile [CuI (MeCN)4 ]+ complex dissolved in DMSO and MeCN displays a combination of Cu(I) and Cu(II) adducts. Copyright © 2016 John Wiley & Sons, Ltd.
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Affiliation(s)
| | - Daniel Forrer
- CNR - ICMATE, Corso Stati Uniti 4, 35127, Padova, Italy
| | | | | | - Pietro Traldi
- CNR - ICMATE, Corso Stati Uniti 4, 35127, Padova, Italy
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Marinelli M, Pellei M, Cimarelli C, Dias HR, Marzano C, Tisato F, Porchia M, Gandin V, Santini C. Novel multicharged silver(I)–NHC complexes derived from zwitterionic 1,3-symmetrically and 1,3-unsymmetrically substituted imidazoles and benzimidazoles: Synthesis and cytotoxic properties. J Organomet Chem 2016. [DOI: 10.1016/j.jorganchem.2016.01.018] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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16
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Castro-Osma JA, Lara-Sanchez A, Otero A, Rodríguez AM, de la Torre MC, Sierra MA. An Efficient and Tunable Route to Bis(1,2,3-triazol-1-yl)methane-Based Nitrogen Compounds. European J Org Chem 2016. [DOI: 10.1002/ejoc.201501519] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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17
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Tisato F, Peruzzo V, Zanchetta G, Tamburini S, Traldi P, Porchia M. Electrospray ionization in the study of the interactions between cytotoxic phosphino Cu(I) complexes and selected amino acids and GlyGlyHis peptide model. EUROPEAN JOURNAL OF MASS SPECTROMETRY (CHICHESTER, ENGLAND) 2016; 22:275-287. [PMID: 27882894 DOI: 10.1255/ejms.1441] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Tetrahedral [Cu(P)4][BF4]-type complexes (P = tertiary phosphine) are a class of monopositively charged compounds that have shown notable antitumor activity in both in vitro and in vivo tests. This biological property appears to be related to the peculiar physicochemical characteristics of these compounds. Although thermodynamically stable, they are labile at micromolar concentrations. Such a behavior allows the Cu(I) ion in [Cu(P)n]+ assemblies (n < 4) to interact with surrounding molecules, including the rich peptide/protein environment that metal complexes have to face in the physiological milieu on the way to tumor cells. The scope of this investigation was to study the interaction products that originate from the treatment in water/methanol mixtures of representative phosphino Cu(I) compounds with an excess of individual amino acids (AAs) selected on the basis of the donor atom likely involved in metal coordination (i.e. O-glycine, S-methionine and N-histidine). These interactions have been investigated in electrospray ionization mass spectrometry (ESI-MS), mainly in the positive ion mode [ESI(+)MS], and the interaction products have been characterized by sequential collisional experiments, performed by an ion trap instrument. Histidine and methionine, but not glycine, were able to mine Cu(I) from [Cu(P)n]+ assemblies through the formation of mixed [CuI(P)(AA)]+ and eventually [CuI(AA)2]+ adducts. The ability to substitute phosphine(s) by AAs and the strongest affinity for Cu(I) was proved by the study of the energetics of collisional-induced decomposition (CID) reactions [CuI(P)(AA)]+ → CuI(AA) + P]+. Among the investigated AAs, histidine displayed the strongest affinity for Cu(I). Transchelation of Cu(I) was similarly observed when [Cu(P)n]+ species were treated with the model tripeptide GlyGlyHis (GGH), the most investigated member of the amino terminal Cu(II) and Ni(II) (ATCUN) peptide family. GGH was able to form robust metal adducts not only with Cu(II) and the related divalent Zn(II) and Ni(II) ions, but also with monovalent ions, including Cu(I) and Ag(I). CID pathways of [CuI(GGH)]+ and [AgI(GGH)]+ were qualitatively superimposable and proceeded through losses of neutral fragments. Similar losses of neutral fragments were observed from [ZnII(GGH)] and [NiII(GGH)]. CID pathways of [CuII(GGH)]-/+ adducts instead took place mainly through intramolecular electron-transfer reactions comprising the reduction of Cu(II) to Cu(I) and the formation of fragment radical cations.
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Affiliation(s)
| | | | | | | | - Pietro Traldi
- CNR - ICMATE, Corso Stati Uniti 4, 35127 Padova, Italy
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18
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Gandin V, Trenti A, Porchia M, Tisato F, Giorgetti M, Zanusso I, Trevisi L, Marzano C. Homoleptic phosphino copper(I) complexes with in vitro and in vivo dual cytotoxic and anti-angiogenic activity. Metallomics 2015; 7:1497-507. [PMID: 26190698 DOI: 10.1039/c5mt00163c] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Homoleptic, tetrahedral Cu(i) complexes of the type [Cu(P)4]BF4 (1-3), where P are the phosphine ligands, 1,3,5-triaza-7-phosphaadamantane (PTA), 3,7-diacetyl-1,3,7-triaza-5-phosphabicyclo[3.3.1]nonane (DAPTA) and 2-thia-1,3,5-triaza-phosphoaadamantane-2,2-dioxide (PTA-SO2), have been prepared. Novel complexes [Cu(DAPTA)4]BF42 and [Cu(PTA-SO2)4]BF43 have been fully characterized by means of spectroscopic methods, corroborated by XAS-EXAFS analysis of 2. In vitro cell culture experiments revealed a significant antiproliferative activity for Cu(i) compounds against several human cancer cell lines derived from solid tumors with preferential cell growth inhibition towards tumour compared to non-malignant cells. In vitro monitoring of migration and capillary-like tube formation of human umbilical vein endothelial cells (HUVECs) showed an anti-angiogenic effect of copper(i) complexes at sub-cytotoxic concentrations. In vivo studies on the antitumor efficacy and ability to inhibit angiogenesis confirmed the dual cytotoxic and anti-angiogenic properties of Cu(i) derivatives.
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Affiliation(s)
- V Gandin
- Dipartimento di Scienze del Farmaco, Università di Padova, via Marzolo 5, 35131 Padova, Italy.
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19
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Peruzzo V, Tisato F, Porchia M, Santini C, Pellei M, Traldi P. Electrospray ionization multi-stage mass spectrometric study of the interaction products of the cytotoxic complex [Cu(thp)₄][PF₆] with methionine-rich model peptides. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2015; 29:253-262. [PMID: 26411623 DOI: 10.1002/rcm.7100] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2014] [Revised: 11/14/2014] [Accepted: 11/14/2014] [Indexed: 06/05/2023]
Abstract
RATIONALE The cytotoxic activity of the copper(I) complex [Cu(thp)4][PF6] (CP) (thp = tris(hydroxymethyl) phosphine) is correlated with its high accumulation in cancer cells. Human copper transporter 1 (hCtr1) has been described as the main trans-membrane protein involved in cellular trafficking of physiological copper. Methionine-rich peptide sequences incorporated in the extracellular domain of hCtr1 play a key role in the cellular internalization of copper. We wish to investigate the interaction of CP with model peptides that mimic the extracellular domain of hCtr1. METHODS The interaction of CP with methionine-rich and methionine-free model peptides has been investigated by electrospray ionization mass spectrometry and the interaction products have been characterized by multiple collisional experiments, using an ion trap mass instrument. RESULTS The interaction of CP with selected methionine-rich model peptides, Ac-MMMMPMTFK-NH2 (P1) and Ac-MGMSYMDSK-NH2 (P2), shows that the native copper complex, after sequential loss of phosphines, induces the formation of [Cu(P1)(thp)](+) and [Cu(P1/P2)](+) adducts reasonably by inclusion of the Cu(I) ion in the peptide framework. Collisionally induced fragmentations (MS(n)) of [Cu(P1/P2)](+) give evidence that the metal is coordinated by the thioether-S of two adjacent methionine residues. Interaction of the same peptides with the isostructural complex [Ag(thp)4](+) or AgNO3 yields similar experimental evidence, leading to [Ag(P1/P2)](+). CONCLUSIONS Methionine sequences incorporated in model peptides are crucial for the recruitment of copper from CP. Such a metal-peptide interaction does not take place when methionine-free Ac-NleGNleSYNleDSK-NH2 (P3) is utilized. A mechanism for tumor cell internalization of CP involving: (i) chemically driven sequential loss of phosphines from the native tetrahedral complex, followed by (ii) transfer of Cu(I) to the methionine-rich sequences typical of the hCtr1 transporter, is proposed.
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Affiliation(s)
| | | | | | - Carlo Santini
- Scuola di Scienze e Tecnologie, Divisione di Chimica, Università di Camerino, Via S. Agostino 1, I 62032, Camerino, (MC), Italy
| | - Maura Pellei
- Scuola di Scienze e Tecnologie, Divisione di Chimica, Università di Camerino, Via S. Agostino 1, I 62032, Camerino, (MC), Italy
| | - Piero Traldi
- CNR - IENI, Corso Stati Uniti 4, 35127, Padova, Italy
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20
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Smoleński P, Pettinari C, Marchetti F, Guedes da Silva MFC, Lupidi G, Badillo Patzmay GV, Petrelli D, Vitali LA, Pombeiro AJL. Syntheses, structures, and antimicrobial activity of new remarkably light-stable and water-soluble tris(pyrazolyl)methanesulfonate silver(I) derivatives of N-methyl-1,3,5-triaza-7-phosphaadamantane salt - [mPTA]BF4. Inorg Chem 2014; 54:434-40. [PMID: 25531979 DOI: 10.1021/ic501855k] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Two new silver(I) complexes of formula [Ag(mPTA)4](Tpms)4(BF4) (1) and [Ag(Tpms)(mPTA)](BF4) (2) (mPTA = N-methyl-1,3,5-triaza-7-phosphaadamantane cation, Tpms = tris(pyrazol-1-yl)methanesulfonate anion) have been synthesized and fully characterized by elemental analyses, (1)H and (31)P{(1)H} NMR, ESI-MS, and IR spectroscopic techniques. The single-crystal X-ray diffraction study of 1 discloses a noncoordinated nature of the Tpms species, existing as counterions around the highly charged metal center [Ag(mPTA)](5+), 1 being the first reported coordination compound bearing a κ(0)-Tpms. 1 features high solubility and stability in water (S25 °C ≈ 30 mg·mL(-1)). The two complexes interact with calf thymus DNA via intercalation mode, binding to the BSA with decrease of its tryptophan fluorescence with a static quenching mechanism. The two new silver complexes exhibit significant antibacterial and antifungal activities screened in vitro against the standard strains of Staphylococcus aureus, Enterococcus faecalis, Pseudomonas aeruginosa, Escherichia coli, and Candida albicans.
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Affiliation(s)
- Piotr Smoleński
- Faculty of Chemistry, University of Wrocław , ul. F. Joliot-Curie 14, 50-383 Wrocław, Poland
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21
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Gandin V, Tisato F, Dolmella A, Pellei M, Santini C, Giorgetti M, Marzano C, Porchia M. In vitro and in vivo anticancer activity of copper(I) complexes with homoscorpionate tridentate tris(pyrazolyl)borate and auxiliary monodentate phosphine ligands. J Med Chem 2014; 57:4745-60. [PMID: 24793739 DOI: 10.1021/jm500279x] [Citation(s) in RCA: 85] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Tetrahedral copper(I) TpCuP complexes 1-15, where Tp is a N,N,N-tris(azolyl)borate and P is a tertiary phosphine, have been synthesized and characterized by means of NMR, ESI-MS, and XAS-EXAFS, and X-ray diffraction analyses on the representative complexes 1 and 10, respectively. All copper(I) complexes were evaluated for their antiproliferative activity against a panel of human cancer cell lines (including cisplatin and multidrug-resistant sublines). The two most effective complexes [HB(pz)3]Cu(PCN), 1, and [HB(pz)3]Cu(PTA), 2, showed selectivity toward tumor vs normal cells, inhibition of 26S proteasome activity associated with endoplasmic reticulum (ER) stress, and unfolded protein response (UPR) activation. No biochemical hallmarks of apoptosis were detected, and morphology studies revealed an extensive cytoplasmic vacuolization coherently with a paraptosis-like cell death mechanism. Finally, the antitumor efficacy of complex 1 was validated in the murine Lewis Lung Carcinoma (LLC) model.
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Affiliation(s)
- Valentina Gandin
- Dipartimento di Scienze del Farmaco, Università di Padova , via Marzolo 5, 35131 Padova, Italy
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22
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Davies LH, Harrington RW, Clegg W, Higham LJ. BR2BodPR2: highly fluorescent alternatives to PPh3and PhPCy2. Dalton Trans 2014; 43:13485-99. [DOI: 10.1039/c4dt00704b] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
The syntheses of highly fluorescent analogues of PPh3and PhPCy2based on the Bodipy chromophore are described.
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Affiliation(s)
- Laura H. Davies
- School of Chemistry
- Bedson Building
- Newcastle University
- Newcastle upon Tyne, UK
| | - Ross W. Harrington
- School of Chemistry
- Bedson Building
- Newcastle University
- Newcastle upon Tyne, UK
| | - William Clegg
- School of Chemistry
- Bedson Building
- Newcastle University
- Newcastle upon Tyne, UK
| | - Lee J. Higham
- School of Chemistry
- Bedson Building
- Newcastle University
- Newcastle upon Tyne, UK
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23
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Smoleński P, Jaros SW, Pettinari C, Lupidi G, Quassinti L, Bramucci M, Vitali LA, Petrelli D, Kochel A, Kirillov AM. New water-soluble polypyridine silver(I) derivatives of 1,3,5-triaza-7-phosphaadamantane (PTA) with significant antimicrobial and antiproliferative activities. Dalton Trans 2013; 42:6572-81. [PMID: 23474654 DOI: 10.1039/c3dt33026e] [Citation(s) in RCA: 74] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
The new series of silver(I) coordination polymers [Ag(N-N)(μ-PTA)]n(X)n (1, 2, 4-8, 10, 11) and discrete monomers [Ag(N-N)(PTA)2](X) (3, 9) {N-N = bpy (1-3), dtbpy (4), neocup (5, 6), phen (7-9), dione (10, 11); X = NO3 (1, 3, 5, 7, 9, 10), PF6 (2, 4, 6, 8, 11)} were generated by self-assembly reactions, in MeOH at ~25 °C, of AgNO3 or AgPF6 with 1,3,5-triaza-7-phosphaadamantane (PTA) and the corresponding polypyridines, namely 2,2'-bipyridine (bpy), 4,4'-di-tert-butyl-2,2'-bipyridine (dtbpy), 1,10-phenanthroline (phen), 2,9-dimethyl-1,10-phenanthroline (neocup) and 1,10-phenanthroline-5,6-dione (dione). The compounds were obtained as air and light stable solids and characterized by IR, (1)H and (31)P{(1)H} NMR spectroscopy, ESI(+)-MS and elemental analyses. The crystal structure of 1 was determined by single crystal X-ray diffraction analysis, revealing infinite one-dimensional (1D) linear chains driven by μ-PTA N,P-linkers. Apart from representing the first examples of the metal-PTA derivatives bearing polypyridine ligands, 1-11 also feature solubility in water (S(25°C) ≈ 4-18 mg mL(-1)). Selected compounds (1, 3, 5, 7, 9 and 10) were thus tested for their biological properties and found to exhibit significant antibacterial and antifungal activities, screened in vitro against the standard strains of Staphylococcus aureus, Staphylococcus pyogenes, Staphylococcus pneumoniae, Staphylococcus sanguinis, Staphylococcus mutans, Enterococcus faecalis, Pseudomonas aeruginosa, Escherichia coli and Candida albicans. Furthermore, the compounds 5, 7, 9 and 10 show a pronounced antiproliferative activity against human malignant melanoma (A375), and the effects on the inhibition of tumor cells in vitro are in agreement with the DNA-binding studies.
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Affiliation(s)
- Piotr Smoleński
- Faculty of Chemistry, University of Wrocław, Wrocław, Poland.
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24
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Tisato F, Crociani L, Porchia M, Di Bernardo P, Endrizzi F, Santini C, Seraglia R. The relationship between electrospray ionization behavior and cytotoxic activity of [M(I)(P)4](+)-type complexes (M = Cu, Ag and Au; P = tertiary phosphine). RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2013; 27:2019-2027. [PMID: 23939970 DOI: 10.1002/rcm.6661] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2013] [Revised: 05/10/2013] [Accepted: 06/19/2013] [Indexed: 06/02/2023]
Abstract
RATIONALE To try to find a correlation between the antiproliferative activity of a series of [M(I)(P)4](+) complexes (M = Cu, Ag and Au; P = tertiary phosphine) and their stability at micromolar concentration under mass spectrometric conditions. METHODS [M(I)(P)4](+) complexes were investigated by positive ion electrospray ionization mass spectrometry with multiple collisional experiments using an ion trap mass spectrometer. RESULTS The displacement of P from native [M(I)(P)4](+), previously described for the copper derivative, is common for the triad complexes leading to the formation of [M(P)3](+) and [M(P)2](+) adducts. Further dissociation of [M(P)2](+) depends on the nature of the metal (Cu ~ Ag > Au). More labile [Cu(P)2](+) and [Ag(P)2](+) are more cytotoxic against HCT-15 human colon carcinoma cells compared to less labile [Au(P)2](+) species. CONCLUSIONS The dissociation of P ligand(s) from the [M(I)(P)4](+) complexes is the driving force for the triggering of the antiproliferative activity. The more favored is the displacement of P from the [M(P)2](+) active form, the more favored is in turn the possibility for the metal to interact with biological substrates related to cancer proliferation.
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Affiliation(s)
- Francesco Tisato
- CNR Istituto di Chimica Inorganica e delle Superfici, Corso Stati Uniti 4, 35127 Padova, Italy
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25
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Porchia M, Dolmella A, Gandin V, Marzano C, Pellei M, Peruzzo V, Refosco F, Santini C, Tisato F. Neutral and charged phosphine/scorpionate copper(I) complexes: effects of ligand assembly on their antiproliferative activity. Eur J Med Chem 2012; 59:218-26. [PMID: 23229057 DOI: 10.1016/j.ejmech.2012.11.022] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2012] [Revised: 11/12/2012] [Accepted: 11/16/2012] [Indexed: 11/29/2022]
Abstract
Ligand-exchange reactions of copper(I) precursors ([Cu(CH(3)CN)(4)]BF(4), CuCl) with a panel of bis(azolyl)borates or poly(pyrazolyl)methanes and a tertiary monodentate phosphine (PTA = 1,3,5-triaza-7-phosphaadamantane, PCN = tris(cyanoethyl)phosphine) produced two series of heteroleptic, either '2 + 1 + 1'- or '3 + 1'-type complexes, which have been characterized by elemental analysis, FT-IR, ESI-MS and multinuclear (31)P and (1)H NMR. '2 + 1 + 1'-type complexes include a N,N-bidentate chelate and two monodentate phosphines (1-8) and '3 + 1'-type complexes comprise a N,N,O- or N,N,N-tridentate chelate and one monodentate phosphine (9-12). All these complexes adopt a four-coordinate, tetrahedral geometry. '3 + 1' complexes show better red-ox stability and a greater tendency to retain the native '3 + 1' mixed-ligand structure. Conversely, '2 + 1 + 1' complexes exhibit increased propensity to dissociation as shown by ESI-MS measurements and X-ray structure determination at low temperature (150 K) of the polymeric complex {[H(2)B(tz(NO2))(2)]Cu[PCN]}(n)6b. In this complex, either the bis(triazolyl)borate and the PCN ligands act as bidentate, with PCN being also the μ(2)-bridiging linker between adjacent monomers. Compound 6b is the first reported example of a polymeric PCN compound with a tetra-coordinate metal centre. Cytotoxic activity of all compounds has been evaluated by MTT test against a panel of several human tumor cell lines including examples of breast (MCF-7), colon (HCT-15 and LoVo), lung (A549), cervix (A431) and ovarian (2008 and its cisplatin resistant variant, C13*) carcinoma, melanoma (A375) and promyelocytic leukemia (HL60). Copper complexes generally show in vitro antitumour activity comparable to that of cisplatin. In particular, neutral '3 + 1'-type complexes 9 and 10, show IC(50) values appreciably lower than those exhibited by the reference metallodrug.
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Affiliation(s)
- Marina Porchia
- I.C.I.S.-C.N.R., Corso Stati Uniti 4, 35127 Padova, Italy.
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26
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Synchrotron radiation X-ray absorption spectroscopic studies in solution and electrochemistry of a nitroimidazole conjugated heteroscorpionate copper(II) complex. Polyhedron 2012. [DOI: 10.1016/j.poly.2012.08.073] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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27
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Nell BP, Swor CD, Zakharov LN, Tyler DR. Synthesis of the hydrophilic phosphine complex Cu(DHMPE)2+ from Cu(I) chloride (DHMPE=1,2-bis[(dihydroxymethyl)phosphino]ethane, a water-soluble bidentate phosphine). Polyhedron 2012. [DOI: 10.1016/j.poly.2012.07.053] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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28
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Kirillov AM, Filipowicz M, Guedes da Silva MFC, Kłak J, Smoleński P, Pombeiro AJL. Unprecedented Mixed-Valence Cu(I)/Cu(II) Complex Derived from N-Methyl-1,3,5-triaza-7-phosphaadamantane: Synthesis, Structural Features, and Magnetic Properties. Organometallics 2012. [DOI: 10.1021/om3005564] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Alexander M. Kirillov
- Centro de Química Estrutural,
Complexo I, Instituto Superior Técnico, Technical University of Lisbon, Avenida Rovisco Pais, 1049-001
Lisbon, Portugal
| | - Małgorzata Filipowicz
- Faculty
of Chemistry, University of Wrocław, ul. F. Joliot-Curie 14,
50-383, Wroclaw, Poland
| | - M. Fátima C. Guedes da Silva
- Centro de Química Estrutural,
Complexo I, Instituto Superior Técnico, Technical University of Lisbon, Avenida Rovisco Pais, 1049-001
Lisbon, Portugal
- Universidade Lusófona de Humanidades e Tecnologias, ULHT Lisbon, Avenida do
Campo Grande, 376, 1749-024, Lisbon, Portugal
| | - Julia Kłak
- Faculty
of Chemistry, University of Wrocław, ul. F. Joliot-Curie 14,
50-383, Wroclaw, Poland
| | - Piotr Smoleński
- Faculty
of Chemistry, University of Wrocław, ul. F. Joliot-Curie 14,
50-383, Wroclaw, Poland
| | - Armando J. L. Pombeiro
- Centro de Química Estrutural,
Complexo I, Instituto Superior Técnico, Technical University of Lisbon, Avenida Rovisco Pais, 1049-001
Lisbon, Portugal
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29
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Peruzzo V, Pretzsch C, Tisato F, Porchia M, Refosco F, Marzano C, Gandin V, Schiller E, Walther M, Pietzsch HJ. Synthesis and characterization of novel tetrahedral copper(I) complexes comprising tridentate PNP-aminodiphosphines and tetradentate PN(X)P-substituted aminodiphosphines (X=O, S). Inorganica Chim Acta 2012. [DOI: 10.1016/j.ica.2012.01.012] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Santini C, Pellei M, Papini G, Morresi B, Galassi R, Ricci S, Tisato F, Porchia M, Rigobello MP, Gandin V, Marzano C. In vitro antitumour activity of water soluble Cu(I), Ag(I) and Au(I) complexes supported by hydrophilic alkyl phosphine ligands. J Inorg Biochem 2011; 105:232-40. [PMID: 21194623 DOI: 10.1016/j.jinorgbio.2010.10.016] [Citation(s) in RCA: 96] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2010] [Revised: 10/28/2010] [Accepted: 10/29/2010] [Indexed: 01/30/2023]
Affiliation(s)
- Carlo Santini
- School of Science and Technology-Chemistry Division, Università di Camerino, via S. Agostino 1, 62032 Camerino, Macerata, Italy.
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Pellei M, Papini G, Trasatti A, Giorgetti M, Tonelli D, Minicucci M, Marzano C, Gandin V, Aquilanti G, Dolmella A, Santini C. Nitroimidazole and glucosamine conjugated heteroscorpionate ligands and related copper(ii) complexes. Syntheses, biological activity and XAS studies. Dalton Trans 2011; 40:9877-88. [DOI: 10.1039/c1dt10486a] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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32
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Aquilanti G, Giorgetti M, Minicucci M, Papini G, Pellei M, Tegoni M, Trasatti A, Santini C. A study on the coordinative versatility of new N,S-donor macrocyclic ligands: XAFS, and Cu2+ complexation thermodynamics in solution. Dalton Trans 2011; 40:2764-77. [DOI: 10.1039/c0dt01401j] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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33
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Hübner E, Fischer NV, Heinemann FW, Mitra U, Dremov V, Müller P, Burzlaff N. N,N,O Ligands Based on Triazoles and Transition Metal Complexes Thereof. Eur J Inorg Chem 2010. [DOI: 10.1002/ejic.201000391] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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34
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Bravo J, Bolaño S, Gonsalvi L, Peruzzini M. Coordination chemistry of 1,3,5-triaza-7-phosphaadamantane (PTA) and derivatives. Part II. The quest for tailored ligands, complexes and related applications. Coord Chem Rev 2010. [DOI: 10.1016/j.ccr.2009.08.006] [Citation(s) in RCA: 173] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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36
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Porchia M, Benetollo F, Refosco F, Tisato F, Marzano C, Gandin V. Synthesis and structural characterization of copper(I) complexes bearing N-methyl-1,3,5-triaza-7-phosphaadamantane (mPTA). J Inorg Biochem 2009; 103:1644-51. [DOI: 10.1016/j.jinorgbio.2009.09.005] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2009] [Revised: 07/08/2009] [Accepted: 09/08/2009] [Indexed: 10/20/2022]
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37
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Giorgetti M, Guadagnini L, Fiddy SG, Santini C, Pellei M. Cu K-edge EXAFS on copper(I) complexes containing dihydridobis(3-nitro-1,2,4-triazol-1-yl)borate and bis(1,2,4-triazol-1-yl)acetate ligand: Evidence for the Cu–O interaction. Polyhedron 2009. [DOI: 10.1016/j.poly.2009.07.032] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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38
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Walker JM, McEwan A, Pycko R, Tassotto ML, Gottardo C, Th'ng J, Wang R, Spivak GJ. [Tris(pyrazolyl)methane]ruthenium Complexes Capable of Inhibiting Cancer Cell Growth. Eur J Inorg Chem 2009. [DOI: 10.1002/ejic.200900766] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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39
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Dias HVR, Gioia Lobbia G, Papini G, Pellei M, Santini C. Copper(I) Isocyanide and Phosphane Complexes of Fluorinated Mono- and Bis(pyrazolyl)borates. Eur J Inorg Chem 2009. [DOI: 10.1002/ejic.200900420] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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40
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Krogstad DA, Gohmann KE, Sunderland TL, Geis AL, Bergamini P, Marvelli L, Young VG. Preparation, spectroscopy, X-ray analysis, and water-solubility studies of the first bis-PTA (PTA=1,3,5-triaza-7-phosphaadamantane) derivatives. Inorganica Chim Acta 2009. [DOI: 10.1016/j.ica.2009.01.039] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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41
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Smoleński P, Benisvy L, Guedes da Silva MFC, Pombeiro AJL. Syntheses and Crystal Structures of the First Zinc Complex with 1,3,5-Triaza-7-phosphaadamantane (PTA), [ZnCl2(PTA)2], and of the Hybrid Organic-Inorganic Salts ofN-Methyl-1,3,5-triaza-7-phosphaadamantane with Tetrahalozinc [PTA-Me]2[ZnI2X2] (X = I, Cl). Eur J Inorg Chem 2009. [DOI: 10.1002/ejic.200801023] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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42
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Tu X, Nichol GS, Zheng Z. Zn(II) and Cu(II) Complexes with the Cluster-based Ligand [Re6(μ 3-Se)8(PEt3)5(PTA)](SbF6)2 (PTA = 1,3,5-Triaza-7-phosphaadamantane). J CLUST SCI 2008. [DOI: 10.1007/s10876-008-0206-5] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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43
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Tu X, Nichol GS, Wang R, Zheng Z. Complexes of the [Re6(μ3-Se)8]2+ core-containing clusters with the water-soluble 1,3,5-triaza-7-phosphaadamantane (PTA) ligand: unexpected ligand protonation and related studies. Dalton Trans 2008:6030-8. [DOI: 10.1039/b806888g] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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