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Samper KG, Rodríguez V, Ortega-Carrasco E, Atrian S, Maréchal JD, Cutillas N, Zamora A, de Haro C, Capdevila M, Ruiz J, Palacios Ò. Understanding the interaction of an antitumoral platinum(II) 7-azaindolate complex with proteins and DNA. Biometals 2014; 27:1159-77. [PMID: 25106460 DOI: 10.1007/s10534-014-9780-1] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2014] [Accepted: 07/25/2014] [Indexed: 01/18/2023]
Abstract
The reactivity of the [Pt(dmba)(aza-N1)(dmso)] complex 1, (a potential antitumoral drug with lower IC50 than cisplatin in several tumoral cell lines) with different proteins and oligonucleotides is investigated by means of mass spectrometry (ESI-TOF MS). The results obtained show a particular binding behaviour of this platinum(II) complex. The interaction of 1 with the assayed proteins apparently takes place by Pt-binding to the most accessible coordinating amino acids, presumably at the surface of the protein -this avoiding protein denaturation or degradation- with the subsequent release of one or two ligands of 1. The specific reactivity of 1 with distinct proteins allows to conclude that the substituted initial ligand (dmso or azaindolate) is indicative of the nature of the protein donor atom finally bound to the platinum(II) centre, i.e. N- or S-donor amino acid. Molecular modeling calculations suggest that the release of the azaindolate ligand is promoted by a proton transfer to the non-coordinating N present in the azaindolate ring, while the release of the dmso ligand is mainly favoured by the binding of a deprotonated Cys. The interaction of complex 1 with DNA takes always place through the release of the azaindolate ligand. Interestingly, the interaction of 1 with DNA only proceeds when the oligonucleotides are annealed forming a double strand. Complex 1 is also capable to displace ethidium bromide from DNA and it also weakly binds to DNA at the minor groove, as shown by Hoechst 33258 displacement experiments. Furthermore, complex 1 is also a good inhibitor of cathepsin B (an enzyme implicated in a number of cancer related events). Therefore, although compound 1 is definitely able to bind proteins that can hamper its arrival to the nuclear target, it should be taken into consideration as a putative anticancer drug due to its strong interaction with oligonucleotides and its effective inhibition of cat B.
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Affiliation(s)
- Katia G Samper
- Departament de Química, Facultat de Ciències, Universitat Autònoma de Barcelona, Cerdanyola del Vallès, 08193, Barcelona, Spain
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Albert J, Bosque R, Crespo M, García G, Granell J, López C, Lovelle MV, Qadir R, González A, Jayaraman A, Mila E, Cortés R, Quirante J, Calvis C, Messeguer R, Badía J, Baldomà L, Cascante M. Cyclopalladated primary amines: a preliminary study of antiproliferative activity through apoptosis induction. Eur J Med Chem 2014; 84:530-6. [PMID: 25063943 DOI: 10.1016/j.ejmech.2014.07.046] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2013] [Revised: 07/14/2014] [Accepted: 07/15/2014] [Indexed: 01/07/2023]
Abstract
Twelve cyclometallated palladium(II) complexes containing primary aromatic amines [benzylamine (a), (R)-1-(1-naphthyl)ethylamine (b) and 2-phenylaniline (c)] as anionic bidentate (C,N)(-) ligands have been evaluated against a panel of human adenocarcinoma cell lines (A549 lung, MDA-MB231 and MCF7 breast, and the cisplatin resistant HCT116 colon). The results revealed a remarkable antiproliferative activity of the triphenylphosphane mononuclear compounds 3-4 (series a, b, c) and the best inhibition was provided for 3c and 4c with the 2-phenylaniline ligand and a six membered chelate ring. Interestingly, 3c and 4c were 14 and 19 times more potent than cisplatin for the inhibition of the cisplatin resistant HCT116 human adenocarcinoma cell line, respectively. Cyclopalladated complexes 3c and 4c exercise their antiproliferative activity over A549 cells mainly through the induction of apoptosis (38 and 31-fold increase in early apoptotic cells, respectively).
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Affiliation(s)
- Joan Albert
- Departament de Química Inorgànica, Facultat de Química, Universitat de Barcelona, Martí i Franquès 1-11, 08028 Barcelona, Spain; Institut de Biomedicina (IBUB), Universitat de Barcelona, Barcelona, Spain.
| | - Ramon Bosque
- Departament de Química Inorgànica, Facultat de Química, Universitat de Barcelona, Martí i Franquès 1-11, 08028 Barcelona, Spain; Institut de Biomedicina (IBUB), Universitat de Barcelona, Barcelona, Spain
| | - Margarita Crespo
- Departament de Química Inorgànica, Facultat de Química, Universitat de Barcelona, Martí i Franquès 1-11, 08028 Barcelona, Spain; Institut de Biomedicina (IBUB), Universitat de Barcelona, Barcelona, Spain
| | - Graciela García
- Departament de Química Inorgànica, Facultat de Química, Universitat de Barcelona, Martí i Franquès 1-11, 08028 Barcelona, Spain
| | - Jaume Granell
- Departament de Química Inorgànica, Facultat de Química, Universitat de Barcelona, Martí i Franquès 1-11, 08028 Barcelona, Spain; Institut de Biomedicina (IBUB), Universitat de Barcelona, Barcelona, Spain
| | - Concepción López
- Departament de Química Inorgànica, Facultat de Química, Universitat de Barcelona, Martí i Franquès 1-11, 08028 Barcelona, Spain.
| | - María Victoria Lovelle
- Departament de Química Inorgànica, Facultat de Química, Universitat de Barcelona, Martí i Franquès 1-11, 08028 Barcelona, Spain
| | - Romana Qadir
- Departament de Química Inorgànica, Facultat de Química, Universitat de Barcelona, Martí i Franquès 1-11, 08028 Barcelona, Spain
| | - Asensio González
- Institut de Biomedicina (IBUB), Universitat de Barcelona, Barcelona, Spain; Laboratori de Química Orgànica, Facultat de Farmàcia, Universitat de Barcelona, Av. Joan XXIII, s/n, 08028 Barcelona, Spain
| | - Anusha Jayaraman
- Institut de Biomedicina (IBUB), Universitat de Barcelona, Barcelona, Spain; Department of Biochemistry and Molecular Biology, Faculty of Biology, Universitat de Barcelona, Unit Associated with CSIC, Diagonal 643, 08028 Barcelona, Spain
| | - Enric Mila
- Institut de Biomedicina (IBUB), Universitat de Barcelona, Barcelona, Spain; Department of Biochemistry and Molecular Biology, Faculty of Biology, Universitat de Barcelona, Unit Associated with CSIC, Diagonal 643, 08028 Barcelona, Spain
| | - Roldán Cortés
- Institut de Biomedicina (IBUB), Universitat de Barcelona, Barcelona, Spain; Department of Biochemistry and Molecular Biology, Faculty of Biology, Universitat de Barcelona, Unit Associated with CSIC, Diagonal 643, 08028 Barcelona, Spain
| | - Josefina Quirante
- Institut de Biomedicina (IBUB), Universitat de Barcelona, Barcelona, Spain; Laboratori de Química Orgànica, Facultat de Farmàcia, Universitat de Barcelona, Av. Joan XXIII, s/n, 08028 Barcelona, Spain
| | - Carme Calvis
- Biomed Division LEITAT Technological Center, Parc Científic, Edifici Hèlix, C/ Baldiri Reixach, 15-21, 08028 Barcelona, Spain
| | - Ramon Messeguer
- Biomed Division LEITAT Technological Center, Parc Científic, Edifici Hèlix, C/ Baldiri Reixach, 15-21, 08028 Barcelona, Spain
| | - Josefa Badía
- Institut de Biomedicina (IBUB), Universitat de Barcelona, Barcelona, Spain; Departament de Bioquímica i Biologia Molecular, Facultat de Farmàcia, Universitat de Barcelona, Av. Joan XXIII s/n, 08028 Barcelona, Spain
| | - Laura Baldomà
- Institut de Biomedicina (IBUB), Universitat de Barcelona, Barcelona, Spain; Departament de Bioquímica i Biologia Molecular, Facultat de Farmàcia, Universitat de Barcelona, Av. Joan XXIII s/n, 08028 Barcelona, Spain
| | - Marta Cascante
- Institut de Biomedicina (IBUB), Universitat de Barcelona, Barcelona, Spain; Department of Biochemistry and Molecular Biology, Faculty of Biology, Universitat de Barcelona, Unit Associated with CSIC, Diagonal 643, 08028 Barcelona, Spain; Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Spain
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Zhang S, Chen W, Hu B, Chen Y, Zheng L, Li Y, Li W. A cubane-like [Ni4O4] cluster and a chloro-bridged dinuclear copper complex incorporating a hydroxyl-rich ligand: syntheses and crystal structures. J COORD CHEM 2012. [DOI: 10.1080/00958972.2012.735364] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Suyun Zhang
- a Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science, Soochow University , Suzhou 215123 , China
| | - Wenqian Chen
- a Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science, Soochow University , Suzhou 215123 , China
| | - Bin Hu
- b Key Laboratory of Salt Lake Resources and Chemistry , Qinghai Institute of Salt Lakes, Chinese Academy of Sciences , Xining 810008 , China
| | - Yanmei Chen
- a Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science, Soochow University , Suzhou 215123 , China
| | - Lina Zheng
- a Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science, Soochow University , Suzhou 215123 , China
| | - Yahong Li
- a Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science, Soochow University , Suzhou 215123 , China
- c State Key Laboratory of Applied Organic Chemistry, Lanzhou University , Lanzhou 73000 , China
| | - Wu Li
- b Key Laboratory of Salt Lake Resources and Chemistry , Qinghai Institute of Salt Lakes, Chinese Academy of Sciences , Xining 810008 , China
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Carreira M, Calvo-Sanjuán R, Sanaú M, Marzo I, Contel M. Organometallic Palladium Complexes with a Water-Soluble Iminophosphorane Ligand as Potential Anticancer Agents. Organometallics 2012; 31:5772-5781. [PMID: 23066172 PMCID: PMC3466594 DOI: 10.1021/om3006239] [Citation(s) in RCA: 69] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
The synthesis and characterization of a new water-soluble iminophosphorane ligand TPA=N-C(O)-2BrC(6)H(4) (C,N-IM; TPA = 1,3,5-triaza-7-phosphaadamantane) 1 is reported. Oxidative addition of 1 to Pd(2)(dba)(3) affords the orthopalladated dimer [Pd(μ-Br){C(6)H(4)(C(O)N=TPA-kC,N)-2}](2) (2) as a mixture of cis and trans isomers (1:1 molar ratio) where the iminophosphorane moeity behaves as a C,N-pincer ligand. By addition of different neutral or monoanionic ligands to 2, the bridging bromide can be cleaved and a variety of hydrophilic or water-soluble mononuclear organometallic palladium(II) complexes of the type [Pd{C(6)H(4)(C(O)N=TPA-kC,N)-2}(L-L)] (L-L = acac (3); S(2)CNMe(2) (4); 4,7-Diphenyl-1,10-phenanthrolinedisulfonic acid disodium salt C(12)H(6)N(2)(C(6)H(4)SO(3)Na)(2) (5)); [Pd{C(6)H(4)(C(O)N=TPA-kC,N)-2}(L)Br] (L = P(mC(6)H(4)SO(3)Na)(3) (6); P(3-Pyridyl)(3) (7)) and, [Pd(C(6)H(4)(C(O)N=TPA)-2}(TPA)(2)Br] (8) are obtained as single isomers. All new complexes were tested as potential anticancer agents and their cytotoxicity properties were evaluated in vitro against human Jurkat-T acute lymphoblastic leukemia cells, normal T-lymphocytes (PBMC) and DU-145 human prostate cancer cells. Compounds [Pd(μ-Br){C(6)H(4)(C(O)N=TPA-kC,N)-2}](2) (2) and [Pd{C(6)H(4)(C(O)N=TPA-kC,N)-2}(acac)] 3 (which has been crystallographically characterized) display the higher cytotoxicity against the above mentioned cancer cell lines while being less toxic to normal T-lymphocytes (peripheral blood mononuclear cells: PBMC). In addition, 3 is very toxic to cisplatin resistant Jurkat shBak indicating a cell death pathway that may be different to that of cisplatin. The interaction of 2 and 3 with plasmid (pBR322) DNA is much weaker than that of cisplatin pointing to an alternative biomolecular target for these cytotoxic compounds. All the compounds show an interaction with human serum albumin (HSA) faster than that of cisplatin.
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Affiliation(s)
- Monica Carreira
- Department of Chemistry, Brooklyn College and The Graduate Center, The City University of New York, Brooklyn, NY, 11210, US
| | - Rubén Calvo-Sanjuán
- Department of Biochemistry and Molecular and Cellular Biology, University of Zaragoza, 50009, Spain
| | - Mercedes Sanaú
- Departamento de Química Inorgánica, Universidad de Valencia, Burjassot, Valencia, 46100, Spain
| | - Isabel Marzo
- Department of Biochemistry and Molecular and Cellular Biology, University of Zaragoza, 50009, Spain
| | - María Contel
- Department of Chemistry, Brooklyn College and The Graduate Center, The City University of New York, Brooklyn, NY, 11210, US
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