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Pérez-Arnaiz C, Leal J, Busto N, Carrión MC, Rubio AR, Ortiz I, Barone G, Díaz de Greñu B, Santolaya J, Leal JM, Vaquero M, Jalón FA, Manzano BR, García B. Role of Seroalbumin in the Cytotoxicity of cis-Dichloro Pt(II) Complexes with (N^N)-Donor Ligands Bearing Functionalized Tails. Inorg Chem 2018; 57:6124-6134. [PMID: 29722534 DOI: 10.1021/acs.inorgchem.8b00713] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Given the potent anticancer properties of cis-diamminedichloroplatinum(II) and knowing its mode of action, we synthesized four new cis-[PtCl2(N^N)] organoplatinum complexes, two with N-substituted pbi ligands (pbiR = 1-R-2-(2-pyridyl)benzimidazole) (namely, 1 and 2) and two more with 4,4'-disubstituted bpy ligands (bpy = 2,2'-bipyridine) (namely, 3 and 4). We explored their cytotoxicity and ability to bind to deoxyguanosine monophosphate (dGMP), DNA, and albumin models. By 1H NMR and UV-vis spectroscopies, circular dichroism, agarose gel electrophoresis, differential scanning calorimetry measurements, and density functional theory calculations, we verified that only 3 can form aquacomplex species after dimethyl sulfoxide solvation; surprisingly, 1, 2, and 3 can bind covalently to DNA, whereas 4 can form a noncovalent complex. Interestingly, only complexes 1 and 4 exhibit good cytotoxicity against human ovarian carcinoma (HeLa) cell line, whereas 2 and 3 are inactive. Although lung carcinoma (A549) cells are more resistant to the four platinum complexes than HeLa cells, when the protein concentration in the extracellular media is lower, the cytotoxicity becomes substantially enhanced. By native electrophoresis of bovine seroalbumin (BSA) and inductively coupled plasma mass spectrometry uptake studies we bear out, on one hand, that 2 and 3 can interact strongly with BSA and its cellular uptake is negligible and, on the other hand, that 1 and 4 can interact with BSA only weakly, its cellular uptake being higher by several orders. These results point up the important role of the protein binding features on their biological activity and cellular uptake of cis-"PtCl2" derivatives. Our results are valuable in the future rational design of new platinum complexes with improved biological properties, as they expose the importance not only of their DNA binding abilities but also of additional factors such as protein binding.
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Affiliation(s)
- Cristina Pérez-Arnaiz
- Departamento de Química , Universidad de Burgos , Plaza Misael Bañuelos s/n , 09001 Burgos , Spain
| | - Jorge Leal
- Facultad de Ciencias y Tecnologías Químicas-IRICA , Universidad de Castilla-La Mancha , Avda. Camilo J. Cela 10 , 13071 Ciudad Real , Spain
| | - Natalia Busto
- Departamento de Química , Universidad de Burgos , Plaza Misael Bañuelos s/n , 09001 Burgos , Spain
| | - María C Carrión
- Facultad de Ciencias y Tecnologías Químicas-IRICA , Universidad de Castilla-La Mancha , Avda. Camilo J. Cela 10 , 13071 Ciudad Real , Spain
| | - Ana R Rubio
- Departamento de Química , Universidad de Burgos , Plaza Misael Bañuelos s/n , 09001 Burgos , Spain
| | - Imanol Ortiz
- Facultad de Ciencias y Tecnologías Químicas-IRICA , Universidad de Castilla-La Mancha , Avda. Camilo J. Cela 10 , 13071 Ciudad Real , Spain
| | - Giampaolo Barone
- Dipartimento di Scienze e Tecnologie Biologiche, Chimiche e Farmaceutiche , Università degli Studi di Palermo , Viale delle Scienze Ed. 17 , 90128 Palermo , Italy
| | - Borja Díaz de Greñu
- Facultad de Ciencias y Tecnologías Químicas-IRICA , Universidad de Castilla-La Mancha , Avda. Camilo J. Cela 10 , 13071 Ciudad Real , Spain
| | - Javier Santolaya
- Departamento de Química , Universidad de Burgos , Plaza Misael Bañuelos s/n , 09001 Burgos , Spain
| | - José M Leal
- Departamento de Química , Universidad de Burgos , Plaza Misael Bañuelos s/n , 09001 Burgos , Spain
| | - Mónica Vaquero
- Departamento de Química , Universidad de Burgos , Plaza Misael Bañuelos s/n , 09001 Burgos , Spain
| | - Félix A Jalón
- Facultad de Ciencias y Tecnologías Químicas-IRICA , Universidad de Castilla-La Mancha , Avda. Camilo J. Cela 10 , 13071 Ciudad Real , Spain
| | - Blanca R Manzano
- Facultad de Ciencias y Tecnologías Químicas-IRICA , Universidad de Castilla-La Mancha , Avda. Camilo J. Cela 10 , 13071 Ciudad Real , Spain
| | - Begoña García
- Departamento de Química , Universidad de Burgos , Plaza Misael Bañuelos s/n , 09001 Burgos , Spain
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Lando DY, Chang CL, Fridman AS, Grigoryan IE, Galyuk EN, Hsueh YW, Hu CK. Comparative thermal and thermodynamic study of DNA chemically modified with antitumor drug cisplatin and its inactive analog transplatin. J Inorg Biochem 2014; 137:85-93. [PMID: 24831492 DOI: 10.1016/j.jinorgbio.2014.04.010] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2013] [Revised: 04/14/2014] [Accepted: 04/15/2014] [Indexed: 12/11/2022]
Abstract
Antitumor activity of cisplatin is exerted by covalent binding to DNA. For comparison, studies of cisplatin-DNA complexes often employ the very similar but inactive transplatin. In this work, thermal and thermodynamic properties of DNA complexes with these compounds were studied using differential scanning calorimetry (DSC) and computer modeling. DSC demonstrates that cisplatin decreases thermal stability (melting temperature, Tm) of long DNA, and transplatin increases it. At the same time, both compounds decrease the enthalpy and entropy of the helix-coil transition, and the impact of transplatin is much higher. From Pt/nucleotide molar ratio rb=0.001, both compounds destroy the fine structure of DSC profile and increase the temperature melting range (ΔT). For cisplatin and transplatin, the dependences δTm vs rb differ in sign, while δΔT vs rb are positive for both compounds. The change in the parameter δΔT vs rb demonstrates the GC specificity in the location of DNA distortions. Our experimental results and calculations show that 1) in contrast to [Pt(dien)Cl]Cl, monofunctional adducts formed by transplatin decrease the thermal stability of long DNA at [Na(+)]>30mM; 2) interstrand crosslinks of cisplatin and transplatin only slightly increase Tm; 3) the difference in thermal stability of DNA complexes with cisplatin vs DNA complexes with transplatin mainly arises from the different thermodynamic properties of their intrastrand crosslinks. This type of crosslink appears to be responsible for the antitumor activity of cisplatin. At any [Na(+)] from interval 10-210mM, cisplatin and transplatin intrastrand crosslinks give rise to destabilization and stabilization, respectively.
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Affiliation(s)
- Dmitri Y Lando
- Institute of Bioorganic Chemistry, National Academy of Sciences of Belarus, 220141 Minsk, Belarus.
| | - Chun-Ling Chang
- Institute of Physics, Academia Sinica, Nankang, Taipei 11529, Taiwan
| | - Alexander S Fridman
- Institute of Bioorganic Chemistry, National Academy of Sciences of Belarus, 220141 Minsk, Belarus
| | | | - Elena N Galyuk
- Institute of Bioorganic Chemistry, National Academy of Sciences of Belarus, 220141 Minsk, Belarus
| | - Ya-Wei Hsueh
- Department of Physics, National Central University, Chungli 32001, Taiwan
| | - Chin-Kun Hu
- Institute of Physics, Academia Sinica, Nankang, Taipei 11529, Taiwan.
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Ye M, Guillaume J, Liu Y, Sha R, Wang R, Seeman NC, Canary JW. Site-specific inter-strand cross-links of DNA duplexes. Chem Sci 2013; 4:1319-1329. [PMID: 23894693 PMCID: PMC3719409 DOI: 10.1039/c2sc21775a] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
We report the development of technology that allows inter-strand coupling across various positions within one turn of DNA. Four 2'-modified nucleotides were synthesized as protected phosphoramidites and incorporated into DNA oligonucleotides. The modified nucleotides contain either 5-atom or 16-atom linker components, with either amine or carboxylic acid functional groups at their termini, forming 10 or 32 atom (11 or 33 bond) linkages. Chemical coupling of the amine and carboxylate groups in designed strands resulted in the formation of an amide bond. Coupling efficiency as a function of trajectory distance between the individual linker components was examined. For those nucleotides capable of forming inter-strand cross-links (ICLs), coupling yields were found to depend on temperature, distance, and linker length, enabling several approaches that can control regioselective linkage. In the most favorable cases, the coupling yields are quantitative. Spectroscopic measurements of strands that were chemically cross-linked indicate that the global structure of the DNA duplex does not appear to be distorted from the B form after coupling. Thermal denaturing profiles of those strands were shifted to somewhat higher temperatures than those of their respective control duplexes. Thus, the robust amide ICLs formed by this approach are site-specific, do not destabilize the rest of the duplex, and only minimally perturb the secondary structure.
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Affiliation(s)
- Miao Ye
- Department of Chemistry, New York University, New York, NY 10003, USA. Fax: +1 212 995 4367; Tel: +1 212 998 8422
| | - Johan Guillaume
- Department of Chemistry, New York University, New York, NY 10003, USA. Fax: +1 212 995 4367; Tel: +1 212 998 8422
| | - Yu Liu
- Department of Chemistry, New York University, New York, NY 10003, USA. Fax: +1 212 995 4367; Tel: +1 212 998 8422
| | - Ruojie Sha
- Department of Chemistry, New York University, New York, NY 10003, USA. Fax: +1 212 995 4367; Tel: +1 212 998 8422
| | - Risheng Wang
- Department of Chemistry, New York University, New York, NY 10003, USA. Fax: +1 212 995 4367; Tel: +1 212 998 8422
| | - Nadrian C. Seeman
- Department of Chemistry, New York University, New York, NY 10003, USA. Fax: +1 212 995 4367; Tel: +1 212 998 8422
| | - James W. Canary
- Department of Chemistry, New York University, New York, NY 10003, USA. Fax: +1 212 995 4367; Tel: +1 212 998 8422
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Metzger R, Bollschweiler E, Hölscher AH, Warnecke-Eberz U. ERCC1: impact in multimodality treatment of upper gastrointestinal cancer. Future Oncol 2011; 6:1735-49. [PMID: 21142660 DOI: 10.2217/fon.10.140] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Platinum-based drugs and radiation are key elements of multimodality treatment in a wide variety of solid tumors and especially tumors of the upper gastrointestinal tract. Cytotoxicity is directly related to their ability to cause DNA damage. This event consecutively triggers the nucleotide excision repair (NER) complex. The NER capacity has a major impact on chemo and radiation sensitivity, emergence of resistance and patient outcome. Excision repair cross-complementing group 1 (ERCC1) is a key molecule in NER. This review provides an overview of the NER complex with a focus on ERCC1. Recent literature has been analyzed and provides information regarding the potential role of ERCC1 as a prognostic factor in multimodality treatment of upper gastrointestinal cancer and cancer risk. To date, the role of ERCC1 as a predictive marker for individual multimodality treatment is far from being firmly established for routine use. However, with reliable methods, established cut-off values and validation in large, prospective, randomized trials, ERCC1 may possibly prove to play an important role as a tumor marker in individualized treatment for upper gastrointestinal cancer.
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Affiliation(s)
- Ralf Metzger
- Department of General, Visceral & Cancer Surgery, University of Cologne, Germany
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Lenglet G, David-Cordonnier MH. DNA-Destabilizing Agents as an Alternative Approach for Targeting DNA: Mechanisms of Action and Cellular Consequences. J Nucleic Acids 2010; 2010. [PMID: 20725618 PMCID: PMC2915751 DOI: 10.4061/2010/290935] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2010] [Revised: 05/27/2010] [Accepted: 06/03/2010] [Indexed: 01/06/2023] Open
Abstract
DNA targeting drugs represent a large proportion of the actual anticancer drug pharmacopeia, both in terms of drug brands and prescription volumes. Small DNA-interacting molecules share the ability of certain proteins to change the DNA helix's overall organization and geometrical orientation via tilt, roll, twist, slip, and flip effects. In this ocean of DNA-interacting compounds, most stabilize both DNA strands and very few display helix-destabilizing properties. These types of DNA-destabilizing effect are observed with certain mono- or bis-intercalators and DNA alkylating agents (some of which have been or are being developed as cancer drugs). The formation of locally destabilized DNA portions could interfere with protein/DNA recognition and potentially affect several crucial cellular processes, such as DNA repair, replication, and transcription. The present paper describes the molecular basis of DNA destabilization, the cellular impact on protein recognition, and DNA repair processes and the latter's relationships with antitumour efficacy.
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Affiliation(s)
- Gaëlle Lenglet
- INSERM U-837, Jean-Pierre Aubert Research Center (JPARC), Team 4 Molecular and Cellular Targeting for Cancer Treatment, Institute for Research on Cancer of Lille (IRCL), Lille F-59045, France
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