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Gil-Moles M, Concepción Gimeno M. The Therapeutic Potential in Cancer of Terpyridine-Based Metal Complexes Featuring Group 11 Elements. ChemMedChem 2024; 19:e202300645. [PMID: 38328860 DOI: 10.1002/cmdc.202300645] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2023] [Revised: 01/22/2024] [Accepted: 02/07/2024] [Indexed: 02/09/2024]
Abstract
Terpyridine-based complexes with group 11 metals emerge as potent metallodrugs in cancer therapy. This comprehensive review focuses on the current landscape of anticancer examples, particularly highlighting the mechanisms of action. While Cu(II) complexes, featuring diverse ancillary ligands, dominate the field, exploration of silver and gold species remains limited. These complexes exhibit significant cytotoxicity against various cancer cell lines with a commendable selectivity for non-tumorigenic cells. DNA interactions, employing intercalation and groove binding, are pivotal and finely tuned through terpyridine ligand functionalization. In addition, copper complexes showcase nuclease activity, triggering apoptosis through ROS generation. Despite silver's high affinity for nitrogen donor atoms, its exploration is relatively sparse, with indications of acting as intercalating agents causing DNA hydrolytic cleavage. Gold(III) compounds, overshadowing gold(I) due to stability concerns, not only intercalate but also induce apoptosis and disrupt the mitochondrial membrane. Further investigations are needed to fully understand the mechanism of action of these compounds, highlighting the necessity of exploring additional biological targets for these promising metallodrugs.
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Affiliation(s)
- María Gil-Moles
- Departamento de Química Inorgánica, Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), CSIC-Universidad de Zaragoza, Pedro Cerbuna 12, 50009, Zaragoza, Spain
- Departamento de Química, Centro de Investigación de Síntesis Química (CISQ), Universidad de la Rioja, Complejo Científico-Tecnológico, 26004, Logroño, Spain
| | - M Concepción Gimeno
- Departamento de Química Inorgánica, Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), CSIC-Universidad de Zaragoza, Pedro Cerbuna 12, 50009, Zaragoza, Spain
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2
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Ni K, Montesdeoca N, Karges J. Highly cytotoxic Cu(II) terpyridine complexes as chemotherapeutic agents. Dalton Trans 2024; 53:8223-8228. [PMID: 38652088 DOI: 10.1039/d4dt00759j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/25/2024]
Abstract
Cancer is considered as the biggest medicinal challenge worldwide. During a typical treatment, the tumorous tissue is removed in a surgical procedure and the patient further treated by chemotherapy. One of the most frequently applied drugs are platinum complexes. Despite their clinical success, these compounds are associated with severe side effects and low therapeutic efficiency. To overcome these limitations, herein, the synthesis and biological evaluation of Cu(II) terpyridine complexes as chemotherapeutic drug candidates is suggested. The compounds were found to be highly cytotoxic in the nanomolar range against various cancer cell lines. Mechanistic insights revealed that the compounds primarily accumulated in the cytoplasm and generated reactive oxygen species in this organelle, triggering cell death by apoptosis. Based on their high therapeutic effect, these metal complexes could serve as a starting point for further drug development.
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Affiliation(s)
- Kaixin Ni
- Faculty of Chemistry and Biochemistry, Ruhr-University Bochum, Universitätsstrasse 150, 44780 Bochum, Germany.
| | - Nicolás Montesdeoca
- Faculty of Chemistry and Biochemistry, Ruhr-University Bochum, Universitätsstrasse 150, 44780 Bochum, Germany.
| | - Johannes Karges
- Faculty of Chemistry and Biochemistry, Ruhr-University Bochum, Universitätsstrasse 150, 44780 Bochum, Germany.
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3
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Kumar P, Tomar S, Kumar K, Kumar S. Transition metal complexes as self-activating chemical nucleases: proficient DNA cleavage without any exogenous redox agents. Dalton Trans 2023; 52:6961-6977. [PMID: 37128993 DOI: 10.1039/d3dt00368j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
Chemical nucleases have found potential applications in the research fields of chemistry, biotechnology and medicine. A variety of metal complexes have been explored as good to outstanding therapeutic agents for DNA cleavage activity most likely via hydrolytic, oxidative or photoinduced cleavage pathways. However, most of these DNA cleaving agents lack their utility in in vivo applications due to their dependence on exogenous oxidants or reductants to achieve successful DNA damage. In view of addressing these issues, the development of metal complexes/organic molecules serving as self-activating chemical nucleases has received growing attention from researchers. In only the last decade, this field has dramatically expanded for the usage of chemical nucleases as therapeutic agents for DNA damage. The present study provides an overview of the opportunities and challenges in the design and development of self-activating chemical nucleases as improved DNA therapeutic candidates in the absence of an external redox agent. The reports on DNA nuclease activity via self-activation, especially with copper, zinc and iron complexes, and their mechanistic investigation have been discussed in this review article.
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Affiliation(s)
- Pramod Kumar
- Department of Chemistry, Mahamana Malviya College Khekra (Baghpat), C.C.S. University Meerut, India.
| | - Sunil Tomar
- Department of Zoology, Mahamana Malviya College Khekra (Baghpat), C.C.S. University Meerut, India
| | - Krishan Kumar
- Department of Chemistry, Motilal Nehru College, South Campus University of Delhi, New Delhi, India
| | - Sushil Kumar
- Department of Chemistry, School of Engineering, University of Petroleum and Energy Studies (UPES), Dehradun-248007, Uttarakhand, India.
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Lanthanide (III) complexes (Ln = Er and Yb) based on polypyridyl ligand: Synthesis, crystal structure, DNA-binding activity and interaction with human serum protein in vitro. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2022.132787] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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5
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Patel PN, Desai DH, Patel NC. Novel Terpyridine Derivatives of Benzothiazole and Copper(II) Complex: Synthesis and Spectral Studies. RUSSIAN JOURNAL OF ORGANIC CHEMISTRY 2022. [DOI: 10.1134/s107042802201016x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Musiol R, Malecki P, Pacholczyk M, Mularski J. Terpyridines as promising antitumor agents: an overview of their discovery and development. Expert Opin Drug Discov 2021; 17:259-271. [PMID: 34928186 DOI: 10.1080/17460441.2022.2017877] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
INTRODUCTION The fused aromatic system of terpyridines makes them good, innocent ligands for various metals. The resulting complexes have been extensively studied for both their biological activity and physico-chemical properties. However, although free ligands also have an interesting biological activity, their share in recent research is considerably limited. AREAS COVERED This review covers the literature on the anticancer activity of terpyridines with special attention being paid to their use as free ligands. Whenever possible, the mechanism of action has been discussed, thereby providing evidence of the substantial differences between sole ligands or less stable complexes and those that have heavier elements. EXPERT OPINION The existing literature indicates that there is a specific attitude for investigating terpyridines and their transition metal complexes. While the latter have been well explored and recognized in the scientific community, the free terpyridines are considered to be useful solely due to their complexing ability. At the same time, terpyridines could have similar or even higher anticancer potency than their complexes. Moreover, a mechanistic analysis of the stability and intracellular activity would provide information that would be useful for designing new drugs.
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Affiliation(s)
- Robert Musiol
- Faculty of Science and Technology, University of Silesia in Katowice, Szkolna 7, Katowice, Poland
| | | | - Marcin Pacholczyk
- Department of Systems Biology and Engineering, Silesian University of Technology, Akademicka 16, Gliwice, Poland
| | - Jacek Mularski
- Faculty of Science and Technology, University of Silesia in Katowice, Szkolna 7, Katowice, Poland
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Diab T, Mohamed TM, Hamed A, Gaber M. Induction of Apoptosis by Nano-Synthesized Complexes of H2L and its Cu(II) Complex in Human Hepatocellular Carcinoma Cells. Anticancer Agents Med Chem 2021; 21:1151-1159. [PMID: 32013853 DOI: 10.2174/1871520620666200204103756] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2019] [Revised: 12/18/2019] [Accepted: 12/25/2019] [Indexed: 12/24/2022]
Abstract
BACKGROUND Chemotherapy is currently the most utilized treatment for cancer. Therapeutic potential of metal complexes in cancer therapy has attracted a lot of interest. The mechanisms of action of most organometallic complexes are poorly understood. OBJECTIVE This study was designed to explore the mechanisms governing the anti-proliferative effect of the free ligand N1,N6-bis((2-hydroxynaphthalin-1-yl)methinyl)) adipohydrazone (H2L) and its complexes of Mn(II), Co(II), Ni(II) and Cu(II). METHODS Cells were exposed to H2L or its metal complexes where cell viability determined by MTT assay. Cell cycle was analysed by flow cytometry. In addition, qRT-PCR was used to monitor the expression of Bax and Bcl-2. Moreover, molecular docking was carried out to find the potentiality of Cu(II) complex as an inhibitor of Adenosine Deaminase (ADA). ADA, Superoxide Dismutase (SOD) and reduced Glutathione (GSH) levels were measured in the most affected cancer cell line. RESULTS The obtained results demonstrated that H2L and its Cu(II) complex exhibited a strong cytotoxic activity compared to other complexes against HepG2 cells (IC50=4.14±0.036μM/ml and 3.2±0.02μM/ml), respectively. Both H2L and its Cu(II) complex induced G2/M phase cell cycle arrest in HepG2 cells. Additionally, they induced apoptosis in HepG2 cells via upregulation of Bax and downregulation of Bcl-2. Interestingly, the activity of ADA was decreased by 2.8 fold in HepG2 cells treated with Cu(II) complex compared to untreated cells. An increase of SOD activity and GSH level in HepG2 cells compared to control was observed. CONCLUSION The results concluded that Cu(II) complex of H2L induced apoptosis in HepG2 cells. Further studies are needed to confirm its anti-cancer effect in vivo.
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Affiliation(s)
- Thoria Diab
- Biochemistry Division, Chemistry Department, Faculty of Science, Tanta University, Tanta 31527, Egypt
| | - Tarek M Mohamed
- Biochemistry Division, Chemistry Department, Faculty of Science, Tanta University, Tanta 31527, Egypt
| | - Alaa Hamed
- Biochemistry Division, Chemistry Department, Faculty of Science, Tanta University, Tanta 31527, Egypt
| | - Mohamed Gaber
- Chemistry Department, Faculty of Science, Tanta University, Tanta 31527, Egypt
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Karges J, Xiong K, Blacque O, Chao H, Gasser G. Highly cytotoxic copper(II) terpyridine complexes as anticancer drug candidates. Inorganica Chim Acta 2021. [DOI: 10.1016/j.ica.2020.120137] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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9
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Biochemical pathways of copper complexes: progress over the past 5 years. Drug Discov Today 2021; 26:1086-1096. [PMID: 33486113 DOI: 10.1016/j.drudis.2021.01.015] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2020] [Revised: 01/06/2021] [Accepted: 01/12/2021] [Indexed: 12/21/2022]
Abstract
Copper is an essential trace element with vital roles in many metalloenzymes; it is also prominent among nonplatinum anticancer metallodrugs. Copper-based complexes are endogenously biocompatible, tenfold more potent than cisplatin, exhibit fewer adverse effects, and have a wide therapeutic window. In cancer biology, copper acts as an antitumor agent by inhibiting cancer via multiple pathways. Herein, we present an overview of advances in copper complexes as 'lead' antitumor drug candidates, and in understanding their biochemical and pharmacological pathways over the past 5 years. This review will help to develop more efficacious therapeutics to improve clinical outcomes for cancer treatments.
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Kumar A, Balbach J. Inactivation of parathyroid hormone: perspectives of drug discovery to combating hyperparathyroidism. Curr Mol Pharmacol 2021; 15:292-305. [PMID: 33573587 DOI: 10.2174/1874467214666210126112839] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2020] [Revised: 11/09/2020] [Accepted: 11/10/2020] [Indexed: 11/22/2022]
Abstract
Hormonal coordination is tightly regulated within the human body and thus regulates human physiology. The parathyroid hormone (PTH), a member of the endocrine system, regulates the calcium and phosphate level within the human body. Under non-physiological conditions, PTH levels get upregulated (hyperparathyroidism) or downregulated (hypoparathyroidism) due to external or internal factors. In the case of hyperparathyroidism, elevated PTH stimulates cellular receptors present in the bones, kidneys, and intestines to increase the blood calcium level, leading to calcium deposition. This eventually causes various symptoms including kidney stones. Currently, there is no known medication that directly targets PTH in order to suppress its function. Therefore, it is of great interest to find novel small molecules or any other means that can modulate PTH function. The molecular signaling of PTH starts by binding of its N-terminus to the G-protein coupled PTH1/2 receptor. Therefore, any intervention that affects the N-terminus of PTH could be a lead candidate for treating hyperparathyroidism. As a proof-of-concept, there are various possibilities to inhibit molecular PTH function by (i) a small molecule, (ii) N-terminal PTH phosphorylation, (iii) fibril formation and (iv) residue-specific mutations. These modifications put PTH into an inactive state, which will be discussed in detail in this review article. We anticipate that exploring small molecules or other means that affect the N-terminus of PTH could be lead candidates in combating hyperparathyroidism.
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Affiliation(s)
- Amit Kumar
- Department of Life Sciences, Faculty of Natural Sciences, Imperial College of Science, Technology and Medicine London, South Kensington, London SW7 2BU. United Kingdom
| | - Jochen Balbach
- Institute of Physics, Biophysics, Martin-Luther-University Halle- Wittenberg. Germany
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11
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Velugula K, Kumar A, Chinta JP. Nuclease and anticancer activity of antioxidant conjugated terpyridine metal complexes. Inorganica Chim Acta 2020. [DOI: 10.1016/j.ica.2020.119596] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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12
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Kundu BK, Pragti, Mobin SM, Mukhopadhyay S. Studies on the influence of the nuclearity of zinc(ii) hemi-salen complexes on some pivotal biological applications. Dalton Trans 2020; 49:15481-15503. [DOI: 10.1039/d0dt02941f] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Experimental and theoretical corroboration of the various biological applications of two nuclearity-dependent dimeric and trimeric Zn(ii) hemi-salen complexes.
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Affiliation(s)
- Bidyut Kumar Kundu
- Discipline of Chemistry
- School of Basic Sciences
- Indian Institute of Technology Indore
- Indore 453552
- India
| | - Pragti
- Discipline of Chemistry
- School of Basic Sciences
- Indian Institute of Technology Indore
- Indore 453552
- India
| | - Shaikh M. Mobin
- Discipline of Chemistry
- School of Basic Sciences
- Indian Institute of Technology Indore
- Indore 453552
- India
| | - Suman Mukhopadhyay
- Discipline of Chemistry
- School of Basic Sciences
- Indian Institute of Technology Indore
- Indore 453552
- India
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Fathima SSA, Meeran MMS, Nagarajan ER. Synthesis, characterization and biological evaluation of novel 2,2′-((1,2-diphenylethane-1,2-diylidene)bis(azanylylidene))bis(pyridin-3-ol)and metal complexes: molecular docking and in silico ADMET profile. Struct Chem 2019. [DOI: 10.1007/s11224-019-01425-7] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Exploring the DNA interactions, FGF growth receptor interaction and biological screening of metal(II) complexes of NNN donor ligand derived from 2‑(aminomethyl)benzimidazole. Int J Biol Macromol 2019; 126:1303-1317. [DOI: 10.1016/j.ijbiomac.2018.09.116] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2018] [Revised: 09/18/2018] [Accepted: 09/20/2018] [Indexed: 11/22/2022]
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15
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Rezaei A, Khanamani Falahati-Pour S, Mohammadizadeh F, Hajizadeh MR, Mirzaei MR, Khoshdel A, Fahmidehkar MA, Mahmoodi M. Effect of a Copper (II) Complex on The Induction of Apoptosis in Human Hepatocellular Carcinoma Cells. Asian Pac J Cancer Prev 2018; 19:2877-2884. [PMID: 30362316 PMCID: PMC6291042 DOI: 10.22034/apjcp.2018.19.10.2877] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Objectives: In the present study, we aimed to identify the anti-proliferative potential of [Cu(L)(2imi)] complex [L = 2-(((5-chloro-2-oxyphenyl)imino)methyl)phenolato) and 2imi = 2-methyl imidazole] against HepG2 cells as an in vitro model of human hepatocellular carcinoma and normal mouse fibroblast L929 cells. Methods: The cytotoxic and apoptotic effects of [Cu(L)(2imi)] complex on HepG2 cells and normal fibroblasts (L929) were examined by MTT assay and flow cytometry, respectively. Results: Cytotoxicity induced by [Cu(L)(2imi)] complex was time dependent. Also, there was a positive correlation between cytotoxicity and an increase in Cu complex concentration. For HepG2 cells, the cell viability percentage was 50% at 58 μg/mL after 24 h treatment, whereas in the same concentration and conditions, the viability percentage was surprisingly higher (about 100%) for L929 cells. Also, after 48 h treatment, the viability percentage of HepG2 cells at 55 μg/mL concentration was 50% in contrast with 89.3% for L929 cells in the same conditions. Flow cytometry findings suggest that [Cu(L)(2imi)] complex is capable of decreasing cancer cell viability through apoptosis and did not efficiently activate the necrosis process. Conclusions: Finally, we found that [Cu(L)(2imi)] complex possess the potential for development as an anti-cancer drug for human hepatocellular carcinoma.
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Affiliation(s)
- Azadeh Rezaei
- Department of Clinical Biochemistry, Faculty of Medicine, Rafsanjan University of Medical Sciences, Rafsanjan, Iran.,Pistachio Safety Research Center, Rafsanjan University of Medical Sciences, Rafsanjan, Iran.
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Savić A, Marzo T, Scaletti F, Massai L, Bartoli G, Hoogenboom R, Messori L, Van Deun R, Van Hecke K. New platinum(II) and palladium(II) complexes with substituted terpyridine ligands: synthesis and characterization, cytotoxicity and reactivity towards biomolecules. Biometals 2018; 32:33-47. [PMID: 30367340 DOI: 10.1007/s10534-018-0155-x] [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: 09/10/2018] [Accepted: 10/16/2018] [Indexed: 11/29/2022]
Abstract
A series of palladium(II) (1-3) and platinum(II) chloride complexes (4 and 5) with 2,2':6',2″-terpyridine (terpy) derivatives substituted at the 4' position, was synthesized and fully characterized. Single crystal X-ray diffraction analysis of complexes 2, 3 and 5 showed tridentate coordination of the 4'-substituted terpyridine (terpy) ligands to the metal center. Moreover, in vitro cytotoxic activity of these complexes toward a panel of human cancer cell lines (lung cancer A549, colorectal cancer HCT116, ovarian cancer IGROV-1) and toward normal cell line HDF (dermal fibroblast) was determined by Trypan Blue exclusion assay. Overall, the tested compounds manifested a relevant cytotoxicity for the selected cancer cell lines with complex 4 also showing a modest cytotoxicity on the normal cell lines. To better understand the mode of action of these metal complexes, their reactivity with three model proteins, i.e. hen egg white lysozyme (HEWL), cytochrome c (cyt c) and ribonuclease A (RNase A) were comparatively investigated through ESI-MS analysis. The results highlighted a different behavior between the two series of complexes being platinum compounds more reactive toward RNase and cyt c than palladium compounds. Based on the obtained results, it is proposed that in presence of RNase A and cyt c, the platinum complexes undergo activation through release of labile ligands followed by binding to the protein. In contrast, palladium complexes revealed a far lower reactivity implying the likely occurrence of a different mechanism of action.
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Affiliation(s)
- Aleksandar Savić
- Faculty of Chemistry, University of Belgrade, Belgrade, 11000, Serbia.
| | - Tiziano Marzo
- Department of Chemsitry, University of Florence, 50019, Sesto Fiorentino, Italy.,Department of Chemistry and Industrial Chemistry, University of Pisa, 56124, Pisa, Italy
| | - Federica Scaletti
- Department of Chemsitry, University of Florence, 50019, Sesto Fiorentino, Italy
| | - Lara Massai
- Department of Chemsitry, University of Florence, 50019, Sesto Fiorentino, Italy
| | - Gianluca Bartoli
- Department of Experimental and Clinical Medicine, University of Florence, 50134, Florence, Italy
| | - Richard Hoogenboom
- Department of Organic and Macromolecular Chemistry, Supramolecular Chemistry Group, Centre of Macromolecular Chemistry (CMaC), Ghent University, 9000, Ghent, Belgium
| | - Luigi Messori
- Department of Chemsitry, University of Florence, 50019, Sesto Fiorentino, Italy
| | - Rik Van Deun
- Department of Chemistry, L³-Luminescent Lanthanide Lab, Ghent University, 9000, Ghent, Belgium.
| | - Kristof Van Hecke
- Department of Chemistry, XStruct, Ghent University, 9000, Ghent, Belgium
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Kumar A, Kuhn LT, Balbach J. A Cu 2+ complex induces the aggregation of human papillomavirus oncoprotein E6 and stabilizes p53. FEBS J 2018; 285:3013-3025. [PMID: 29931810 DOI: 10.1111/febs.14591] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2018] [Revised: 05/14/2018] [Accepted: 06/20/2018] [Indexed: 12/13/2022]
Abstract
Papillomavirus oncoprotein E6 is a critical factor in the modulation of cervical cancer in humans. At the molecular level, formation of the E6-E6AP-p53 ternary complex, which directs p53's degradation, is the key instigator of cancer transforming properties. Herein, a Cu2+ anthracenyl-terpyridine complex is described which specifically induces the aggregation of E6 in vitro and in cultured cells. For a hijacking mechanism, both E6 and E6AP are required for p53 ubiquitination and degradation. The Cu2+ complex interacts with E6 at the E6AP and p53 binding sites. We show that E6 function is suppressed by aggregation, rendering it incapable of hijacking p53 and thus increasing its cellular level. Therapeutic treatments of cervical cancer are currently unavailable to infected individuals. We anticipate that this Cu2+ complex might open up a new therapeutic avenue for the design and development of new chemical entities for the diagnosis and treatment of HPV-induced cancers.
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Affiliation(s)
- Amit Kumar
- Astbury Centre for Structural Molecular Biology, School of Molecular and Cellular Biology, University of Leeds, UK.,Institute of Physics, Biophysics, Martin-Luther-University Halle-Wittenberg, Germany.,Institute of Technical Biochemistry e.V., Martin-Luther-University Halle-Wittenberg, Germany
| | - Lars T Kuhn
- Astbury Centre for Structural Molecular Biology, School of Molecular and Cellular Biology, University of Leeds, UK
| | - Jochen Balbach
- Institute of Physics, Biophysics, Martin-Luther-University Halle-Wittenberg, Germany.,Institute of Technical Biochemistry e.V., Martin-Luther-University Halle-Wittenberg, Germany
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18
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Fu WW, Shu X, Luo YL, Tang ZQ, Li Q, Liu HJ, Cheng QW, Wang HY, Liu Y. New Co(II) And Mn(II) Complexes with 4′-Substituted 2,2′:6′,2″-Terpyridine Ligands. J STRUCT CHEM+ 2018. [DOI: 10.1134/s002247661802021x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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20
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Synthesis, cytotoxic activity and DNA-binding properties of copper(II) complexes with terpyridine. Polyhedron 2018. [DOI: 10.1016/j.poly.2017.11.008] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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21
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Fu WW, Huang Q, Liu ST, Wu WJ, Shen JR, Li SH. Syntheses, Crystal Structures, and Luminescence Properties of Co(II), Ni(II) and Zn(II) Complexes with 4′-(4-(Imidazol-1-Yl)phenyl)-2,2′:6′,2″-Terpyridine. RUSS J COORD CHEM+ 2017. [DOI: 10.1134/s1070328417100037] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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22
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Syntheses, crystal structures and DNA-binding activities of divalent Fe, Cu, Zn and Cd complexes with 4′-(furan-2-yl)-2,2′:6′,2″-terpyridine. ZEITSCHRIFT FUR NATURFORSCHUNG SECTION B-A JOURNAL OF CHEMICAL SCIENCES 2017. [DOI: 10.1515/znb-2017-0041] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
Five coordination complexes [Fe(ftpy)2](ClO4)2·(H2O)2 (1), [Cu(ftpy)(NO3)(H2O)](NO3) (2), [Cu(ftpy)2]2(ClO4)4·(C2H5OH) (3), [Zn(ftpy)2]·(ClO4)2·(H2O)1.5 (4) and [Cd(ftpy)2]2(ClO4)4·(C2H5OH) (5) (ftpy=4′-(furan-2-yl)-2,2′:6′,2′-terpyridine) have been synthesized and characterized by IR, elemental analysis and single-crystal X-ray diffraction. With the exception of 4, all complexes adopt normal homoleptic [M(ftpy)2]2+ motifs. In the crystal, both hydrogen bonds and face-to-face interactions between furyl and pyridyl rings facilitate the construction of three-dimensional networks. The DNA-binding activities of the five complexes have been investigated by fluorescence emission titration at room temperature suggesting an intercalative mode for 1–3 with a relative order, 3>2>1, and a combined static and dynamic mode for 4 and 5.
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In vitro and in vivo anti-proliferative evaluation of bis(4′-(4-tolyl)-2,2′:6′,2″-terpyridine)copper(II) complex against Ehrlich ascites carcinoma tumors. J Biol Inorg Chem 2017; 22:1109-1122. [DOI: 10.1007/s00775-017-1488-6] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2017] [Accepted: 08/20/2017] [Indexed: 12/15/2022]
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Kumar A. A small-molecule acts as a 'roadblock' on DNA, hampering its fundamental processes. J Inorg Biochem 2017; 176:134-139. [PMID: 28892676 DOI: 10.1016/j.jinorgbio.2017.08.023] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2017] [Revised: 08/02/2017] [Accepted: 08/25/2017] [Indexed: 12/24/2022]
Abstract
DNA replication, RNA and protein synthesis are the most fundamental housekeeping processes involved in an organism's growth. Failure or dysregulation of these pathways are often deleterious to life. Therefore, selective inhibition of such processes can be crucial for the inhibition of the growth of any cell, including cancer cells, pathogenic bacteria or other deadly microbes. In the present study, a Zn2+ complex is shown to act as a roadblock of DNA. The Zn2+ complex inhibited DNA taq polymerase activity under the in vitro conditions of polymerase chain reaction (PCR). Under in vivo conditions, it readily crosses the cell wall of gram-negative bacteria (Escherichia coli), leading to the reduction of RNA levels as well as protein content. Growth of pathogenic bacteria (e.g., Staphylococcus aureus and Pseudomonas aeruginosa) was also significantly retarded. The Zn2+ complex binds to the grooves of the DNA without inducing conformational changes or exhibiting chemical nuclease activity. To the best current knowledge, this is first coordination complex exhibiting a 'roadblock' property under both in vitro and in vivo conditions (show at all three levels - DNA, RNA and protein). The label-free approach used in this study may offer an alternative route towards fighting pathogenic bacteria or cancer cells by hampering fundamental cellular processes.
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Affiliation(s)
- Amit Kumar
- Astbury Centre for Structural Molecular Biology, School of Molecular and Cellular Biology, University of Leeds, Leeds LS2 9JT, UK; Institute of Physics, Biophysics, Martin-Luther-University Halle-Wittenberg, Germany.
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25
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Mahendiran D, Kumar RS, Rahiman AK. Heteroleptic silver(I) complexes with 2,2′:6′,2″-terpyridines and naproxen: DNA interaction, EGFR/VEGFR2 kinase, growth inhibition and cell cycle arrest studies. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2017; 76:601-615. [DOI: 10.1016/j.msec.2017.03.085] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/14/2016] [Revised: 03/07/2017] [Accepted: 03/12/2017] [Indexed: 10/20/2022]
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Abstract
Platinum drugs are the frontline therapy in many carcinomas, including high-grade serous ovarian cancers. Clinically, high-grade serous carcinomas have an apparent complete response to carboplatin, but tumors invariably recur and response to platinum drugs diminishes over time. Standard of care prohibits re-administration of platinum drugs to these patients who are labeled as having platinum-resistant disease. In this stage patients are treated with non-platinum agents and outcomes are often poor. In vivo and in vitro data presented here demonstrate that this clinical dogma should be challenged. Platinum drugs can be an effective therapy even for platinum-resistant carcinomas as long as they are combined with an agent that specifically targets mechanisms of platinum resistance exploited by the therapy-resistant tumor subpopulations. High levels of cellular inhibitor of apoptosis proteins cIAP1 and 2 (cIAP) were detected in up to 50% of high-grade serous and non-high-grade serous platinum-resistant carcinomas. cIAP proteins can induce platinum resistance and they are effectively degraded with the drug birinapant. In platinum-resistant tumors with ≥22.4 ng of cIAP per 20 μg of tumor lysate, the combination of birinapant with carboplatin was effective in eliminating the cancer. Our findings provide a new personalized therapeutic option for patients with platinum-resistant carcinomas. The efficacy of birinapant in combination with carboplatin should be tested in high-grade serous carcinoma patients in a clinical trial.
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27
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Three structurally related Copper complexes with two isomers: DNA/BSA binding ability, DNA cleavage activity and excellent cytotoxicity. Inorganica Chim Acta 2017. [DOI: 10.1016/j.ica.2016.12.002] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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28
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Maheshwaran D, Nagendraraj T, Manimaran P, Ashokkumar B, Kumar M, Mayilmurugan R. A Highly Selective and Efficient Copper(II) - “Turn-On” Fluorescence Imaging Probe forl-Cysteine. Eur J Inorg Chem 2017. [DOI: 10.1002/ejic.201601229] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Duraiyarasu Maheshwaran
- Bioinorganic Chemistry Laboratory/Physical Chemistry; School of Chemistry; Madurai Kamaraj University; 625021 Madurai Tamil Nadu India
| | - Thavasilingam Nagendraraj
- Bioinorganic Chemistry Laboratory/Physical Chemistry; School of Chemistry; Madurai Kamaraj University; 625021 Madurai Tamil Nadu India
| | - Paramasivam Manimaran
- School of Biotechnology; Madurai Kamaraj University; 625021 Madurai Tamil Nadu India
| | | | - Mukesh Kumar
- Solid State Physics Division; Physics Group; Bhabha Atomic Research Center; Mumbai Maharashtra India
| | - Ramasamy Mayilmurugan
- Bioinorganic Chemistry Laboratory/Physical Chemistry; School of Chemistry; Madurai Kamaraj University; 625021 Madurai Tamil Nadu India
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29
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Kumar A, Balbach J. Targeting the molecular chaperone SlyD to inhibit bacterial growth with a small molecule. Sci Rep 2017; 7:42141. [PMID: 28176839 PMCID: PMC5296862 DOI: 10.1038/srep42141] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2016] [Accepted: 01/03/2017] [Indexed: 12/23/2022] Open
Abstract
Molecular chaperones are essential molecules for cell growth, whereby they maintain protein homeostasis. Because of their central cellular function, bacterial chaperones might be potential candidates for drug targets. Antimicrobial resistance is currently one of the greatest threats to human health, with gram-negative bacteria being of major concern. We found that a Cu2+ complex readily crosses the bacterial cell wall and inhibits SlyD, which is a molecular chaperone, cis/trans peptidyl prolyl isomerise (PPIase) and involved in various other metabolic pathways. The Cu2+ complex binds to the active sites of SlyD, which suppresses its PPIase and chaperone activities. Significant cell growth retardation could be observed for pathogenic bacteria (e.g., Staphylococcus aureus and Pseudomonas aeruginosa). We anticipate that rational development of drugs targeting molecular chaperones might help in future control of pathogenic bacterial growth, in an era of rapidly increasing antibiotic resistance.
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Affiliation(s)
- Amit Kumar
- Astbury Centre for Structural Molecular Biology, School of Molecular and Cellular Biology, University of Leeds, Leeds LS2 9JT, UK
- Institute of Physics, Biophysics, Martin Luther University, Halle, Wittenberg, Germany
| | - Jochen Balbach
- Institute of Physics, Biophysics, Martin Luther University, Halle, Wittenberg, Germany
- Centre for Structure und Dynamics of Proteins (MZP), Martin Luther University Halle, Wittenberg, Germany
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30
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Ma Z, Zhang B, Guedes da Silva MFC, Silva J, Mendo AS, Baptista PV, Fernandes AR, Pombeiro AJL. Synthesis, characterization, thermal properties and antiproliferative potential of copper(II) 4'-phenyl-terpyridine compounds. Dalton Trans 2016; 45:5339-55. [PMID: 26905013 DOI: 10.1039/c5dt02744f] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Reactions between 4'-phenyl-terpyridine (L) and several Cu(II) salts (p-toluenesulfonate, benzoate and o-, m- or p-hydroxybenzoate) led to the formation of [Cu(p-SO3C6H4CH3)L(H2O)2](p-SO3C6H4CH3) (1), [Cu(OCOPh)2L] (2), [Cu(o-OCOC6H4OH)2L] (3), [Cu(m-OCOC6H4OH)2L]4·MeOH (·MeOH) and [Cu(p-OCOC6H4OH)2L]5·2H2O (·2H2O), which were characterized by elemental and TG-DTA analyses, ESI-MS, IR spectroscopy and single crystal X-ray diffraction, as well as by conductivimetry. In all structures the Cu atoms present N3O3 octahedral coordination geometries, which, in 2-5, are highly distorted as a result of the chelating-bidentate mode of one of the carboxylate ligands. Intermolecular π···π stacking interactions could also be found in 2-5 (in the 3.569-3.651 Å range and involving solely the pyridyl rings). Medium-strong hydrogen bond interactions lead to infinite 1D chains (in 1 and 4) and to an infinite 2D network (in 5). Compounds 1 and 4 show high in vitro cytotoxicity towards HCT116 colorectal carcinoma and HepG2 hepatocellular carcinoma cell lines. The antiproliferative potential of compound 1 is due to an increase of the apoptotic process that was confirmed by Hoechst staining, flow cytometry and RT-qPCR. All compounds able to non-covalently intercalate the DNA helix and induce in vitro pDNA double-strand breaks in the absence of H2O2. Concerning compound 1, the hydroxyl radical and singlet oxygen do not appear to be involved in the pDNA cleavage process and the fact that this cleavage also occurs in the absence of molecular oxygen points to a hydrolytic mechanism of cleavage.
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Affiliation(s)
- Zhen Ma
- Guangxi Key Laboratory of Petrochemical Resource Processing and Process Intensification Technology, School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, P. R. China. and Centro de Química Estrutural, Complexo I, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001, Lisboa, Portugal.
| | - Bian Zhang
- Guangxi Key Laboratory of Petrochemical Resource Processing and Process Intensification Technology, School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, P. R. China.
| | - M Fátima C Guedes da Silva
- Centro de Química Estrutural, Complexo I, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001, Lisboa, Portugal.
| | - Joana Silva
- UCIBIO, Departamento de Ciências da Vida, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, Caparica, Portugal.
| | - Ana Soraia Mendo
- UCIBIO, Departamento de Ciências da Vida, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, Caparica, Portugal.
| | - Pedro Viana Baptista
- UCIBIO, Departamento de Ciências da Vida, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, Caparica, Portugal.
| | - Alexandra R Fernandes
- Centro de Química Estrutural, Complexo I, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001, Lisboa, Portugal. and UCIBIO, Departamento de Ciências da Vida, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, Caparica, Portugal.
| | - Armando J L Pombeiro
- Centro de Química Estrutural, Complexo I, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001, Lisboa, Portugal.
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31
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Zhou XQ, Li Y, Zhang DY, Nie Y, Li ZJ, Gu W, Liu X, Tian JL, Yan SP. Copper complexes based on chiral Schiff-base ligands: DNA/BSA binding ability, DNA cleavage activity, cytotoxicity and mechanism of apoptosis. Eur J Med Chem 2016; 114:244-56. [DOI: 10.1016/j.ejmech.2016.02.055] [Citation(s) in RCA: 59] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2015] [Revised: 02/17/2016] [Accepted: 02/24/2016] [Indexed: 11/25/2022]
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32
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Kumar A, Baumann M, Balbach J. Small Molecule Inhibited Parathyroid Hormone Mediated cAMP Response by N-Terminal Peptide Binding. Sci Rep 2016; 6:22533. [PMID: 26932583 PMCID: PMC4773758 DOI: 10.1038/srep22533] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2015] [Accepted: 02/11/2016] [Indexed: 11/30/2022] Open
Abstract
Ligand binding to certain classes of G protein coupled receptors (GPCRs) stimulates the rapid synthesis of cAMP through G protein. Human parathyroid hormone (PTH), a member of class B GPCRs, binds to its receptor via its N–terminal domain, thereby activating the pathway to this secondary messenger inside cells. Presently, GPCRs are the target of many pharmaceuticals however, these drugs target only a small fraction of structurally known GPCRs (about 10%). Coordination complexes are gaining interest due to their wide applications in the medicinal field. In the present studies we explored the potential of a coordination complex of Zn(II) and anthracenyl–terpyridine as a modulator of the parathyroid hormone response. Preferential interactions at the N–terminal domain of the peptide hormone were manifested by suppressed cAMP generation inside the cells. These observations contribute a regulatory component to the current GPCR–cAMP paradigm, where not the receptor itself, but the activating hormone is a target. To our knowledge, this is the first report about a coordination complex modulating GPCR activity at the level of deactivating its agonist. Developing such molecules might help in the control of pathogenic PTH function such as hyperparathyroidism, where control of excess hormonal activity is essentially required.
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Affiliation(s)
- Amit Kumar
- Astbury Centre for Structural Molecular Biology, School of Molecular and Cellular Biology, University of Leeds, Leeds LS2 9JT, UK.,Institute of Physics, Biophysics, Martin-Luther-University Halle-Wittenberg, Germany
| | - Monika Baumann
- Institute of Physics, Biophysics, Martin-Luther-University Halle-Wittenberg, Germany
| | - Jochen Balbach
- Institute of Physics, Biophysics, Martin-Luther-University Halle-Wittenberg, Germany.,Centre for Structure und Dynamics of Proteins (MZP), Martin-Luther-University Halle-Wittenberg, Germany
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33
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Zhou XQ, Sun Q, Jiang L, Li ST, Gu W, Tian JL, Liu X, Yan SP. Synthesis, characterization, DNA/BSA interactions and anticancer activity of achiral and chiral copper complexes. Dalton Trans 2016; 44:9516-27. [PMID: 25919814 DOI: 10.1039/c5dt00931f] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Six novel copper(ii) complexes of [CuCl]ClO4 (), [Cu(acac)]PF6 (), [CuCl]2(PF6)2 (), [CuCl]2(PF6)2 (), [Cu(acac)]PF6 () and [Cu(acac)]PF6 (), ( = 1-naphthyl-N,N-[bis(2-pyridyl)methyl]amine, = R/S-1-naphthyl-N,N-[bis(2-pyridyl)methyl]ethanamine, acac = diacetone) were synthesized to serve as artificial nucleases. All complexes were structurally characterized using X-ray crystallography. The crystal structures showed the presence of distorted square-planar CuLCl (, and ) and distorted tetragonal-pyramidal CuL(acac) (, and ) geometry. The interaction of these complexes with calf thymus DNA (CT-DNA) was researched by means of several spectroscopy methods, which indicated that the complexes were bound to CT-DNA by an intercalation binding mode. DNA cleavage experiments revealed that the complexes exhibited remarkable DNA cleavage activities in the presence of H2O2, and single oxygen ((1)O2) or hydroxyl radicals may serve as the major cleavage active species. In particular, the in vitro cytotoxicity of the complexes on four human cancer cell lines (HeLa, MCF-7, Bel-7404 and HepG-2) demonstrated that the six compounds had broad-spectrum anti-cancer activity with low IC50 values. The stronger cytotoxicity and DNA cleavage activity of the chiral enantiomers compared with chiral analogues verified the influence of chirality on the antitumor activity of complexes. Meanwhile, the protein binding ability was revealed by quenching of tryptophan emission with the addition of complexes using BSA as a model protein. The results indicated that the quenching mechanism of BSA by the complexes was a static process.
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Affiliation(s)
- Xue-Quan Zhou
- College of Chemistry, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Nankai University, Tianjin 300071, China.
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Mahendiran D, Kumar RS, Viswanathan V, Velmurugan D, Rahiman AK. Targeting of DNA molecules, BSA/c-Met tyrosine kinase receptors and anti-proliferative activity of bis(terpyridine)copper(ii) complexes. Dalton Trans 2016; 45:7794-814. [DOI: 10.1039/c5dt03831f] [Citation(s) in RCA: 62] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
The newly synthesized bis(terpyridine)copper(ii) complexes may act as DNA-targeting metallo-anticancer agents to overcome cisplatin resistance.
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Affiliation(s)
- Dharmasivam Mahendiran
- Post-Graduate and Research Department of Chemistry
- The New College (Autonomous)
- Chennai 600 014
- India
| | - Raju Senthil Kumar
- Department of Pharmaceutical Chemistry
- Swami Vivekanandha College of Pharmacy
- Tiruchengodu 637 205
- India
| | - Vijayan Viswanathan
- CAS in Crystallography and Biophysics
- University of Madras
- Guindy Campus
- Chennai 600 025
- India
| | - Devadasan Velmurugan
- CAS in Crystallography and Biophysics
- University of Madras
- Guindy Campus
- Chennai 600 025
- India
| | - Aziz Kalilur Rahiman
- Post-Graduate and Research Department of Chemistry
- The New College (Autonomous)
- Chennai 600 014
- India
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35
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Singh V, Sharma K, Shankar B, Awasthi SK, Gupta RD. Heteroleptic Cu(ii)–polypyridyl complexes as photonucleases. NEW J CHEM 2016. [DOI: 10.1039/c6nj00409a] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Four new copper(ii)–polypyridyl complexes having tail groups with increasing aromaticity, hydrophobicity and planarity are synthesized. These complexes are found to be avid DNA binders and show efficient nuclease activity under either chemical stimulus or UV-A light irradiation.
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Affiliation(s)
- V. Singh
- Department of Chemistry
- University of Delhi
- Delhi-110 007
- India
- Department of Chemical Engineering
| | - K. Sharma
- Department of Chemistry
- University of Delhi
- Delhi-110 007
- India
| | - B. Shankar
- Department of Chemistry
- University of Delhi
- Delhi-110 007
- India
| | - S. K. Awasthi
- Department of Chemistry
- University of Delhi
- Delhi-110 007
- India
| | - R. D. Gupta
- Faculty of Life Sciences and Biotechnology
- South Asian University
- Delhi-110 021
- India
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36
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Synthesis and the characterization of Schiff-base copper complexes: Reactivity with DNA, 4-NPP and BNPP. Inorganica Chim Acta 2015. [DOI: 10.1016/j.ica.2014.12.034] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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37
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Medici S, Peana M, Nurchi VM, Lachowicz JI, Crisponi G, Zoroddu MA. Noble metals in medicine: Latest advances. Coord Chem Rev 2015. [DOI: 10.1016/j.ccr.2014.08.002] [Citation(s) in RCA: 373] [Impact Index Per Article: 41.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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38
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Xie J, Cheng Z, Yang W, Liu H, Zhou W, Li M, Xu Y. Crystal structures and antimicrobial and cytotoxic activities of zinc(II), nickel(II) and copper(II) complexes of N
-(piperidylthiocarbonyl)benzamide. Appl Organomet Chem 2015. [DOI: 10.1002/aoc.3262] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Juan Xie
- College of Chemistry, Chemical Engineering and Materials Science; Soochow University; 199 Ren'ai Road Suzhou 215123 People's Republic of China
| | - Zhongqin Cheng
- School of Biology and Basic Medical Sciences; Soochow University; 199 Ren'ai Road Suzhou 215123 People's Republic of China
| | - Wen Yang
- College of Chemistry, Chemical Engineering and Materials Science; Soochow University; 199 Ren'ai Road Suzhou 215123 People's Republic of China
| | - Huanhuan Liu
- College of Chemistry, Chemical Engineering and Materials Science; Soochow University; 199 Ren'ai Road Suzhou 215123 People's Republic of China
| | - Weiqun Zhou
- College of Chemistry, Chemical Engineering and Materials Science; Soochow University; 199 Ren'ai Road Suzhou 215123 People's Republic of China
| | - Mengying Li
- School of Biology and Basic Medical Sciences; Soochow University; 199 Ren'ai Road Suzhou 215123 People's Republic of China
| | - Yunlong Xu
- College of Chemistry, Chemical Engineering and Materials Science; Soochow University; 199 Ren'ai Road Suzhou 215123 People's Republic of China
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39
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Mahendiran D, Gurumoorthy P, Gunasekaran K, Senthil Kumar R, Rahiman AK. Structural modeling, in vitro antiproliferative activity, and the effect of substituents on the DNA fastening and scission actions of heteroleptic copper(ii) complexes with terpyridines and naproxen. NEW J CHEM 2015. [DOI: 10.1039/c5nj01059d] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
A new series of heteroleptic copper(ii) complexes with terpyridines and naproxen are reported. The results of biological activity are laying a foundation for the design of new anticancer agents.
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Affiliation(s)
- Dharmasivam Mahendiran
- Post-Graduate and Research Department of Chemistry
- The New College (Autonomous)
- Chennai-600 014
- India
| | - Perumal Gurumoorthy
- Post-Graduate and Research Department of Chemistry
- The New College (Autonomous)
- Chennai-600 014
- India
| | | | - Raju Senthil Kumar
- Department of Pharmaceutical Chemistry
- Swami Vivekanandha College of Pharmacy
- Tiruchengodu-637 205
- India
| | - Aziz Kalilur Rahiman
- Post-Graduate and Research Department of Chemistry
- The New College (Autonomous)
- Chennai-600 014
- India
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40
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Wende C, Lüdtke C, Kulak N. Copper Complexes of N-Donor Ligands as Artificial Nucleases. Eur J Inorg Chem 2014. [DOI: 10.1002/ejic.201400032] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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41
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Gama S, Rodrigues I, Marques F, Palma E, Correia I, Carvalho MFNN, Pessoa JC, Cruz A, Mendo S, Santos IC, Mendes F, Santos I, Paulo A. New ternary bipyridine–terpyridine copper(ii) complexes as self-activating chemical nucleases. RSC Adv 2014. [DOI: 10.1039/c4ra12085j] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
New copper complexes with an impressive DNA cleaving ability in the absence of any exogenous oxidants or reductants.
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Affiliation(s)
- Sofia Gama
- Centro de Ciências e Tecnologias Nucleares (C2TN)
- Instituto Superior Técnico
- Universidade de Lisboa
- Campus Tecnológico e Nuclear
- Bobadela LRS, Portugal
| | - Inês Rodrigues
- Centro de Ciências e Tecnologias Nucleares (C2TN)
- Instituto Superior Técnico
- Universidade de Lisboa
- Campus Tecnológico e Nuclear
- Bobadela LRS, Portugal
| | - Fernanda Marques
- Centro de Ciências e Tecnologias Nucleares (C2TN)
- Instituto Superior Técnico
- Universidade de Lisboa
- Campus Tecnológico e Nuclear
- Bobadela LRS, Portugal
| | - Elisa Palma
- Centro de Química Estrutural
- Instituto Superior Técnico
- Universidade de Lisboa
- 1049-001 Lisboa, Portugal
| | - Isabel Correia
- Centro de Química Estrutural
- Instituto Superior Técnico
- Universidade de Lisboa
- 1049-001 Lisboa, Portugal
| | | | - João Costa Pessoa
- Centro de Química Estrutural
- Instituto Superior Técnico
- Universidade de Lisboa
- 1049-001 Lisboa, Portugal
| | - Andreia Cruz
- Departamento de Biologia & CESAM
- Universidade de Aveiro
- Campus de Santiago
- 3810-193 Aveiro, Portugal
| | - Sónia Mendo
- Departamento de Biologia & CESAM
- Universidade de Aveiro
- Campus de Santiago
- 3810-193 Aveiro, Portugal
| | - Isabel C. Santos
- Centro de Ciências e Tecnologias Nucleares (C2TN)
- Instituto Superior Técnico
- Universidade de Lisboa
- Campus Tecnológico e Nuclear
- Bobadela LRS, Portugal
| | - Filipa Mendes
- Centro de Ciências e Tecnologias Nucleares (C2TN)
- Instituto Superior Técnico
- Universidade de Lisboa
- Campus Tecnológico e Nuclear
- Bobadela LRS, Portugal
| | - Isabel Santos
- Centro de Ciências e Tecnologias Nucleares (C2TN)
- Instituto Superior Técnico
- Universidade de Lisboa
- Campus Tecnológico e Nuclear
- Bobadela LRS, Portugal
| | - António Paulo
- Centro de Ciências e Tecnologias Nucleares (C2TN)
- Instituto Superior Técnico
- Universidade de Lisboa
- Campus Tecnológico e Nuclear
- Bobadela LRS, Portugal
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42
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Santini C, Pellei M, Gandin V, Porchia M, Tisato F, Marzano C. Advances in Copper Complexes as Anticancer Agents. Chem Rev 2013; 114:815-62. [DOI: 10.1021/cr400135x] [Citation(s) in RCA: 1128] [Impact Index Per Article: 102.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Carlo Santini
- Scuola
di Scienze e Tecnologie−Sez. Chimica, Università di Camerino, via S. Agostino 1, 62032 Camerino, Macerata, Italy
| | - Maura Pellei
- Scuola
di Scienze e Tecnologie−Sez. Chimica, Università di Camerino, via S. Agostino 1, 62032 Camerino, Macerata, Italy
| | - Valentina Gandin
- Dipartimento
di Scienze del Farmaco, Università di Padova, via Marzolo
5, 35131 Padova, Italy
| | | | | | - Cristina Marzano
- Dipartimento
di Scienze del Farmaco, Università di Padova, via Marzolo
5, 35131 Padova, Italy
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Wang S, Chu W, Wang Y, Liu S, Zhang J, Li S, Wei H, Zhou G, Qin X. Synthesis, characterization and cytotoxicity of Pt(II), Pd(II), Cu(II) and Zn(II) complexes with 4’-substituted terpyridine. Appl Organomet Chem 2013. [DOI: 10.1002/aoc.2988] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Shuxiang Wang
- Key Laboratory of Chemical Biology of Hebei Province; College of Chemistry and Environmental ScienceHebei University; Baoding 071002 People's Republic of China
- Key Laboratory of Medicinal Chemistry and Molecular Diagnosis of Ministry of Education; Hebei University; Baoding 071002 People's Republic of China
| | - Wenhao Chu
- Key Laboratory of Chemical Biology of Hebei Province; College of Chemistry and Environmental ScienceHebei University; Baoding 071002 People's Republic of China
| | - Yuechai Wang
- Key Laboratory of Chemical Biology of Hebei Province; College of Chemistry and Environmental ScienceHebei University; Baoding 071002 People's Republic of China
| | - Siyuan Liu
- Key Laboratory of Chemical Biology of Hebei Province; College of Chemistry and Environmental ScienceHebei University; Baoding 071002 People's Republic of China
| | - Jinchao Zhang
- Key Laboratory of Chemical Biology of Hebei Province; College of Chemistry and Environmental ScienceHebei University; Baoding 071002 People's Republic of China
- Key Laboratory of Medicinal Chemistry and Molecular Diagnosis of Ministry of Education; Hebei University; Baoding 071002 People's Republic of China
| | - Shenghui Li
- Key Laboratory of Chemical Biology of Hebei Province; College of Chemistry and Environmental ScienceHebei University; Baoding 071002 People's Republic of China
| | - Haiying Wei
- Key Laboratory of Chemical Biology of Hebei Province; College of Chemistry and Environmental ScienceHebei University; Baoding 071002 People's Republic of China
| | - Guoqiang Zhou
- Key Laboratory of Chemical Biology of Hebei Province; College of Chemistry and Environmental ScienceHebei University; Baoding 071002 People's Republic of China
| | - Xinying Qin
- Key Laboratory of Chemical Biology of Hebei Province; College of Chemistry and Environmental ScienceHebei University; Baoding 071002 People's Republic of China
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Nakai M, Fukuda H, Yano S, Nakabayashi Y. Synthesis of glucopyranosyl Schiff base zinc(II) complexes capable of interacting with mononucleotides, and their DNA-cleavage activities. Chem Biodivers 2013; 9:1942-54. [PMID: 22976982 DOI: 10.1002/cbdv.201100441] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
New glucopyranosyl Schiff base zinc complexes, [Zn(GlcSal)(2) ] (1; GlcSalH=N-(2-deoxy-β-D-glucopyranos-2-yl-salicylaldimine) and [Zn(AcOGlcSal)(2) ] (2; AcOGlcSalH=N-(2-deoxy-β-D-1,3,4,6-tetraacetylglucopyranos-2-yl-salicylaldimine) were synthesized, and characterized by spectral and analytical methods. The interaction between the Zn complexes and mononucleotides was investigated by (1)H-NMR, (31)P-NMR and UV/VIS spectroscopies. Mononucleotides, cytidine 5'-monophosphate (CMP) and uridyl 5'-monophosphate (UMP), interacted with these complexes to form a 1:1 complex with 1 and a 1:2 complex with 2, depending on the presence of the OH group of glucopyranosyl substituents. The DNA-cleavage activities of 1 and 2 were studied using plasmid DNA (pBR322) in a medium of 5 mM Tris·HCl/50 mM NaCl buffer in the presence of H(2)O(2). The DNA-cleavage activity decreased in the order of 2>1>Zn(OAc)(2), indicating the significant promoting effect of the glucopyranosyl Schiff base ligand and the participation of the glucopyranosyl OH groups in the cleavage mechanism. The mechanism of the DNA cleavage by 1 and 2 was investigated by evaluation of the effect of a HO· radical scavenger and a singlet-oxygen ((1)O(2)) quencher under aerobic conditions. The former exhibited little effect, excluding the HO· radical as an active species and supporting the hydrolysis mechanism for the main process of the DNA cleavage. The latter quencher somewhat hindered the cleavage, indicating the partial participation of a (1)O(2) as a competitive active species in the present system.
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Affiliation(s)
- Misaki Nakai
- Department of Chemistry and Materials Engineering, Faculty of Chemistry, Materials and Bioengineering, Kansai University, 3-3-35, Yamatecho, Suita-shi, Osaka, 564-8680, Japan.
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Cu(II) complexes of glyco-imino-aromatic conjugates in DNA binding, plasmid cleavage and cell cytotoxicity. J CHEM SCI 2013. [DOI: 10.1007/s12039-012-0319-0] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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Copper(II) complexes of terpyridine derivatives: A footstep towards development of antiproliferative agent for breast cancer. J Inorg Biochem 2012; 117:48-59. [DOI: 10.1016/j.jinorgbio.2012.08.010] [Citation(s) in RCA: 61] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2012] [Revised: 08/14/2012] [Accepted: 08/14/2012] [Indexed: 11/17/2022]
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Suntharalingam K, Hunt DJ, Duarte AA, White AJP, Mann DJ, Vilar R. A tri-copper(II) complex displaying DNA-cleaving properties and antiproliferative activity against cancer cells. Chemistry 2012; 18:15133-41. [PMID: 23059789 DOI: 10.1002/chem.201202482] [Citation(s) in RCA: 69] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2012] [Indexed: 11/07/2022]
Abstract
A new disubstituted terpyridine ligand and the corresponding tri-copper(II) complex have been prepared and characterised. The binding affinity and binding mode of this tri-copper complex (as well as the previously reported mono- and di-copper analogues) towards duplex DNA were determined by using UV/Vis spectroscopic titrations and fluorescent indicator displacement (FID) assays. These studies showed the three complexes to bind moderately (in the order of 10(4) M(-1)) to duplex DNA (ct-DNA and a 26-mer sequence). Furthermore, the number of copper centres and the nature of the substituents were found to play a significant role in defining the binding mode (intercalative or groove binding). The nuclease potential of the three complexes was investigated by using circular plasmid DNA as a substrate and analysing the products by agarose-gel electrophoresis. The cleaving activity was found to be dependent on the number of copper centres present (cleaving potency was in the order: tri-copper>di-copper>mono-copper). Interestingly, the tri-copper complex was able to cleave DNA without the need of external co-reductants. As this complex displayed the most promising nuclease properties, cell-based studies were carried out to establish if there was a direct link between DNA cleavage and cellular toxicity. The tri-copper complex displayed high cytotoxicity against four cancer cell lines. Of particular interest was that it displayed high cytotoxicity against the cisplatin-resistant MOLT-4 leukaemia cell line. Cellular uptake studies showed that the tri-copper complex was able to enter the cell and more importantly localise in the nucleus. Immunoblotting analysis (used to monitor changes in protein levels related to the DNA damage response pathway) and DNA-flow cytometric studies suggested that this tri-copper(II) complex is able to induce cellular DNA damage.
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