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Scialabba C, Marretta L, D'Anna L, Barone G, Cavallaro G, Terenzi A, Mauro N. Synergistic Anticancer Effects by Enhancing the G-Quadruplex Binding of Nickel(II) Salphen Complexes through Coupling with S-Doped Carbon Nanodots. ACS APPLIED MATERIALS & INTERFACES 2024. [PMID: 39380145 DOI: 10.1021/acsami.4c12446] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/10/2024]
Abstract
In recent decades, researchers have focused on developing less toxic and more precise cancer therapies. Carbon nanodots (CDs) are among the most promising technologies due to their high biocompatibility, tunable fluorescence, and ability to facilitate photothermal and photodynamic therapy. This study explores the synthesis and characterization of two CDs conjugated with Salphen metal complexes, namely, CDs-PEG-M1 and CDs-PEG-M2, through Sonogashira coupling. Their interaction with G-quadruplex DNA structures (G4s), motifs largely involved in cancer development, was evaluated using various spectroscopic techniques. The results indicate that CDs-PEG-M1 exhibits greater effectiveness in stabilizing G4 structures compared to the metal complex alone or nonfunctionalized CDs. This enhanced stabilization suggests that CDs-PEG-M1 could reduce the concentration of the metal complex needed for potential antitumor applications, thereby minimizing side effects on nontarget tissues. When tested on breast cancer models (MDA-MB-231 as a triple-negative model and MCF-7 as a HER-2 positive model) and on a healthy cell line (HDFa), the CDs-PEG-M1 conjugate reduced cell viability in a concentration- and time-dependent manner, showing greater potency and selectivity against cancer cells compared to virgin CDs and the free M1 complex. This synergistic anticancer effect, driven by the interaction with G4 structures and reactive oxygen species production, underscores the potential of CDs-PEG-M1 as a targeted nanotheranostic tool.
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Affiliation(s)
| | - Laura Marretta
- Department of "Scienze e Tecnologie Biologiche, Chimiche e Farmaceutiche" (STEBICEF), University of Palermo, Via Archirafi, 32 90123, Palermo Italy
| | - Luisa D'Anna
- Department of "Scienze e Tecnologie Biologiche, Chimiche e Farmaceutiche" (STEBICEF), University of Palermo, Via Archirafi, 32 90123, Palermo Italy
| | - Giampaolo Barone
- Department of "Scienze e Tecnologie Biologiche, Chimiche e Farmaceutiche" (STEBICEF), University of Palermo, Via Archirafi, 32 90123, Palermo Italy
| | | | - Alessio Terenzi
- Department of "Scienze e Tecnologie Biologiche, Chimiche e Farmaceutiche" (STEBICEF), University of Palermo, Via Archirafi, 32 90123, Palermo Italy
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2
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D'Anna L, Rubino S, Pipitone C, Serio G, Gentile C, Palumbo Piccionello A, Giannici F, Barone G, Terenzi A. Salphen metal complexes as potential anticancer agents: interaction profile and selectivity studies toward the three G-quadruplex units in the KIT promoter. Dalton Trans 2023; 52:2966-2975. [PMID: 36444991 DOI: 10.1039/d2dt03229e] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
DNA G-rich sequences can organize in four-stranded structures called G-quadruplexes (G4s). These motifs are enriched in significant sites within the human genomes, including telomeres and promoters of cancer related genes. For instance, KIT proto-oncogene promoter, associated with diverse cancers, contains three adjacent G4 units, namely Kit2, SP, and Kit1. Aiming at finding new and selective G-quadruplex binders, we have synthesized and characterized five non-charged metal complexes of Pt(II), Pd(II), Ni(II), Cu(II) and Zn(II) of a chlorine substituted Salphen ligand. The crystal structure of the Pt(II) and Pd(II) complexes was determined by XRPD. FRET measurements indicated that Pt(II) and Pd(II) compounds stabilize Kit1 and Kit2 G4s but not SP, telomeric and double stranded DNA. Spectroscopic investigations (UV-Vis, circular dichroism and fluorescence) suggested the Cu(II) complex as the most G4-selective compound. Interestingly, docking simulations indicate that the synthesized compounds fit groove binding pockets of both Kit1 and Kit2 G4s. Moreover, they exhibited dose-dependent cytotoxic activity in MCF-7, HepG2 and HeLa cancer cells.
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Affiliation(s)
- Luisa D'Anna
- Department of Biological, Chemical and Pharmaceutical Sciences and Technologies, University of Palermo, Viale delle Scienze, Ed. 17, 90128 Palermo, Italy.
| | - Simona Rubino
- Department of Biological, Chemical and Pharmaceutical Sciences and Technologies, University of Palermo, Viale delle Scienze, Ed. 17, 90128 Palermo, Italy.
| | - Candida Pipitone
- Department of Physics and Chemistry "Emilio Segrè", University of Palermo, Viale delle Scienze, Ed. 17, 90128 Palermo, Italy
| | - Graziella Serio
- Department of Biological, Chemical and Pharmaceutical Sciences and Technologies, University of Palermo, Viale delle Scienze, Ed. 17, 90128 Palermo, Italy.
| | - Carla Gentile
- Department of Biological, Chemical and Pharmaceutical Sciences and Technologies, University of Palermo, Viale delle Scienze, Ed. 17, 90128 Palermo, Italy.
| | - Antonio Palumbo Piccionello
- Department of Biological, Chemical and Pharmaceutical Sciences and Technologies, University of Palermo, Viale delle Scienze, Ed. 17, 90128 Palermo, Italy.
| | - Francesco Giannici
- Department of Physics and Chemistry "Emilio Segrè", University of Palermo, Viale delle Scienze, Ed. 17, 90128 Palermo, Italy
| | - Giampaolo Barone
- Department of Biological, Chemical and Pharmaceutical Sciences and Technologies, University of Palermo, Viale delle Scienze, Ed. 17, 90128 Palermo, Italy.
| | - Alessio Terenzi
- Department of Biological, Chemical and Pharmaceutical Sciences and Technologies, University of Palermo, Viale delle Scienze, Ed. 17, 90128 Palermo, Italy.
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Zaki M, Hairat S, Kamaal S, Aljarba NH, AL–Johani NS, Alkahtani S. Synthesis, crystal structure elucidation and DNA/HSA binding profile of Ni(II) complex of Schiff base derived from 3–ethoxy salicylaldehyde and o–phenylenediamine. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2022.133351] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Abdel‐Rahman LH, Basha MT, Al‐Farhan BS, Shehata MR, Abdalla EM. Synthesis, characterization, potential antimicrobial, antioxidant, anticancer, DNA binding, and molecular docking activities and DFT on novel Co(II), Ni(II), VO(II), Cr(III), and La(III) Schiff base complexes. Appl Organomet Chem 2021. [DOI: 10.1002/aoc.6484] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
| | - Maram T. Basha
- Department of Chemistry, College of Science University of Jeddah Jeddah Saudi Arabia
| | - Badriah Saad Al‐Farhan
- Chemistry Department, Faculty of Girls for Science King Khalid University Abha Saudi Arabia
| | | | - Ehab M. Abdalla
- Chemistry Department, Faculty of Science New Valley University Alkharga Egypt
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5
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Aly SA, Elganzory HH, Mahross MH, Abdalla EM. Quantum chemical studies and effect of gamma irradiation on the spectral, thermal, X‐ray diffraction and DNA interaction with Pd (II), Cu(I), and Cd (II) of hydrazone derivatives. Appl Organomet Chem 2021. [DOI: 10.1002/aoc.6153] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- Samar A. Aly
- Department of Environmental Biotechnology, Genetic Engineering and Biotechnology Research Institute University of Sadat City Sadat City Egypt
| | - Hussein H. Elganzory
- Chemistry Department, College of Science Qassim University Buraidah Saudi Arabia
| | - Mahmoud H. Mahross
- Chemistry Department Faculty of Science, Al‐Azhar University Assiut Egypt
| | - Ehab M. Abdalla
- Chemistry Department, Faculty of Science New Valley University Alkharga Egypt
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6
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Paul A, Singh P, Kuznetsov ML, Karmakar A, Guedes da Silva MFC, Koch B, Pombeiro AJL. Influence of anchoring moieties on new benzimidazole-based Schiff base copper(II) complexes towards estrogen dependent breast cancer cells. Dalton Trans 2021; 50:3701-3716. [PMID: 33634805 DOI: 10.1039/d0dt03873c] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Two new benzimidazole Schiff base copper(ii) compounds [Cu(5-CH2PPh3-2-salmethylben)(NO3)(H2O)][BF4]·2/3(H2O)·1/3(MeOH) (1) and [Cu(5-CH2NEt3-2-salmethylben)(Cl)][BF4] (2) were synthesised by mixing 2-(1-methyl-1H-benzo[d]imidazol-2-yl)aniline, (3-formyl-4-hydroxybenzyl)triphenylphosphonium chloride or N,N-diethyl-N-(3-formyl-4-hydroxybenzyl)ethanaminium chloride and Cu(NO3)2·3H2O or CuCl2·2H2O in the presence of tetrafluoroborate in a binary mixture of MeOH : H2O under refluxing conditions. The structures of the compounds were established by elemental analysis, FT-IR, ESI-MS analytical techniques and, for 1, by single-crystal X-ray diffraction analysis. Absorption and fluorescence spectroscopic methods were performed to evaluate the calf thymus DNA interactions with the compounds. The calculated binding constants (Kb) of 3.14 × 105 M-1 for 1 and 3.20 × 105 M-1 for 2 were established. The intercalative DNA binding mode was also verified by molecular docking studies. Both compounds demonstrated a notable in vitro cytotoxic effect against human A-549 (lung carcinoma), MCF-7 (breast cancer) and HeLa (cervical cancer) cancer cell lines. A substantial repressive effect on the proliferation of MCF-7 cells (breast cancer cells) was observed for compound 1. The mechanism of action for the effective antiproliferative activity of 1 has additionally been confirmed by means of various biological studies such as morphological assessment through AO/EB, detection of apoptotic induction via Hoechst/PI dual staining, flow cytometry for detection of cell cycle arrest, quantitative analysis of apoptotic cells, DNA degradation, generation of reactive oxygen species (ROS) and by apoptotic induction through mitochondrial staining.
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Affiliation(s)
- Anup Paul
- Centro de Química Estrutural, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal.
| | - Priya Singh
- Departments of Zoology, Faculty of Science, Banaras Hindu University, Varanasi - 221 005, U.P., India.
| | - Maxim L Kuznetsov
- Centro de Química Estrutural, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal.
| | - Anirban Karmakar
- Centro de Química Estrutural, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal.
| | - M Fátima C Guedes da Silva
- Centro de Química Estrutural, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal.
| | - Biplob Koch
- Departments of Zoology, Faculty of Science, Banaras Hindu University, Varanasi - 221 005, U.P., India.
| | - Armando J L Pombeiro
- Centro de Química Estrutural, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal. and Peoples' Friendship University of Russia (RUDN University), 6 Miklukho-Maklaya Street, Moscow, 117198, Russian Federation
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7
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Bonsignore R, Farine G, Migliore C, Gennaro G, Barone G. DNA-binding of zinc(II) and nickel(II) salphen-like complexes extrapolated at 1 M salt concentration: Removing the ionic strength bias in physiological conditions. J Inorg Biochem 2020; 207:111064. [DOI: 10.1016/j.jinorgbio.2020.111064] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2020] [Revised: 02/28/2020] [Accepted: 03/10/2020] [Indexed: 01/17/2023]
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8
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Li H, Zheng X, Jia Z, Wang X. Theoretical study on noncovalent interaction of molecular tweezers by Zn(II) salphen-azo-crown ether triads receptor. J Mol Model 2020; 26:39. [DOI: 10.1007/s00894-020-4301-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2019] [Accepted: 01/17/2020] [Indexed: 10/25/2022]
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9
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Acrylic-based genosensor utilizing metal salphen labeling approach for reflectometric dengue virus detection. Talanta 2019; 198:358-370. [DOI: 10.1016/j.talanta.2019.02.036] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2018] [Revised: 02/02/2019] [Accepted: 02/05/2019] [Indexed: 01/21/2023]
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10
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Zhu M, Zhao H, Peng T, Su J, Meng B, Qi Z, Jia B, Feng Y, Gao E. Structure and cytotoxicity of zinc (II) and cobalt (II) complexes based on 1,3,5-tris(1-imidazolyl) benzene. Appl Organomet Chem 2019. [DOI: 10.1002/aoc.4734] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Mingchang Zhu
- The Key Laboratory of the Inorganic Molecule-Based Chemistry of Liaoning Province and Laboratory of Coordination Chemistry; Shenyang University of Chemical Technology; Shenyang 110142 China
| | - Hongwei Zhao
- The Key Laboratory of the Inorganic Molecule-Based Chemistry of Liaoning Province and Laboratory of Coordination Chemistry; Shenyang University of Chemical Technology; Shenyang 110142 China
| | - Tingting Peng
- The Key Laboratory of the Inorganic Molecule-Based Chemistry of Liaoning Province and Laboratory of Coordination Chemistry; Shenyang University of Chemical Technology; Shenyang 110142 China
| | - Junqi Su
- The Key Laboratory of the Inorganic Molecule-Based Chemistry of Liaoning Province and Laboratory of Coordination Chemistry; Shenyang University of Chemical Technology; Shenyang 110142 China
| | - Bo Meng
- The Key Laboratory of the Inorganic Molecule-Based Chemistry of Liaoning Province and Laboratory of Coordination Chemistry; Shenyang University of Chemical Technology; Shenyang 110142 China
| | - Zhenzhen Qi
- The Key Laboratory of the Inorganic Molecule-Based Chemistry of Liaoning Province and Laboratory of Coordination Chemistry; Shenyang University of Chemical Technology; Shenyang 110142 China
| | - Bing Jia
- The Key Laboratory of the Inorganic Molecule-Based Chemistry of Liaoning Province and Laboratory of Coordination Chemistry; Shenyang University of Chemical Technology; Shenyang 110142 China
| | - Yunhui Feng
- The Key Laboratory of the Inorganic Molecule-Based Chemistry of Liaoning Province and Laboratory of Coordination Chemistry; Shenyang University of Chemical Technology; Shenyang 110142 China
| | - Enjun Gao
- The Key Laboratory of the Inorganic Molecule-Based Chemistry of Liaoning Province and Laboratory of Coordination Chemistry; Shenyang University of Chemical Technology; Shenyang 110142 China
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11
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Nehra P, Khungar B, Singh RP, Sivasubramanian S, Jha PN, Saini V. Synthesis, characterization and applications of imidazolium ionic liquid-tagged zinc(II) complex. Inorganica Chim Acta 2018. [DOI: 10.1016/j.ica.2018.04.001] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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13
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Massoud SS, Ledet CC, Junk T, Bosch S, Comba P, Herchel R, Hošek J, Trávníček Z, Fischer RC, Mautner FA. Dinuclear metal(ii)-acetato complexes based on bicompartmental 4-chlorophenolate: syntheses, structures, magnetic properties, DNA interactions and phosphodiester hydrolysis. Dalton Trans 2018; 45:12933-50. [PMID: 27479361 DOI: 10.1039/c6dt02596j] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
A series of dinuclear metal(ii)-acetato complexes: [Ni2(μ-L(Cl)O)(μ2-OAc)2](PF6)·3H2O (1), [Ni2(μ-L(Cl)O)(μ2-OAc)2](ClO4)·CH3COCH3 (2), [Cu2(μ-L(Cl)O)(μ2-OAc)(ClO4)](ClO4) (3), [Cu2(μ-L(Cl)O)(OAc)2](PF6)·H2O (4), [Zn2(μ-L(Cl)O)(μ2-OAc)2](PF6) (5) and [Mn2(L(Cl)-O)(μ2-OAc)2](ClO4)·H2O (6), where L(Cl)O(-) = 2,6-bis[bis(2-pyridylmethyl)aminomethyl]-4-chlorophenolate, were synthesized. The complexes were structurally characterized by spectroscopic techniques and single crystal X-ray crystallography. Six-coordinate geometries with doubly bridged acetato ligands were found in Ni(ii), Zn(ii) and Mn(ii) complexes 1, 2, 5 and 6, whereas with Cu(ii) complexes a five-coordinate species was obtained with 4, and mixed five- and six-coordinate geometries with a doubly bridged dimetal core were observed in 3. The magnetic properties of complexes 1-4 and 6 were studied at variable temperatures and revealed weak to very weak antiferromagnetic interactions in 1, 2, 4 and 6 (J = -0.55 to -9.4 cm(-1)) and ferromagnetic coupling in 3 (J = 15.4 cm(-1)). These results are consistent with DFT calculations performed at the B3LYP/def2-TZVP(-f) level of theory. Under physiological conditions, the interaction of the dinculear complexes 1-5 with supercoiled plasmid ds-DNA did not show any pronounced nuclease activity, but Ni(ii) complexes 1 and 2 revealed a strong ability to unwind the supercoiled conformation of ds-DNA. The mechanistic studies performed on the interaction of the Ni(ii) complexes with DNA demonstrated the important impact of the nickel(ii) ion in the unwinding process. In combination with the DNA study, the phosphatase activity of complexes 1, 3, and 5 was examined by the phosphodiester hydrolysis of bis(2,4-dinitrophenol)phosphate (BDNPP) in the pH range of 5.5-10.5 at 25 °C. The Michaelis-Menten kinetics performed at pH 7 and 10.7 showed that catalytic efficiencies kcat/KM (kcat = catalytic rate constant, KM = substrate binding constant) decrease in the order: Ni(ii), 1 > Zn(ii), 5 > Cu(ii), 3. A similar trend was also observed with the turnover numbers at pH = 7. The results are discussed in relation to the coordination geometry and nature of the metal center as well as the steric environment imposed by the compartmental phenoxido ligand.
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Affiliation(s)
- Salah S Massoud
- Department of Chemistry, University of Louisiana at Lafayette, Lafayette, LA 70504, USA.
| | - Catherine C Ledet
- Department of Chemistry, University of Louisiana at Lafayette, Lafayette, LA 70504, USA.
| | - Thomas Junk
- Department of Chemistry, University of Louisiana at Lafayette, Lafayette, LA 70504, USA.
| | - Simone Bosch
- Anorganisch-Chemisches Institut and Interdisziplinäres Zentrum für Wissenschaftliches Rechnen (IWR), Universität Heidelberg, Im Neuenheimer Feld 270, 69120 Heidelberg, Germany.
| | - Peter Comba
- Anorganisch-Chemisches Institut and Interdisziplinäres Zentrum für Wissenschaftliches Rechnen (IWR), Universität Heidelberg, Im Neuenheimer Feld 270, 69120 Heidelberg, Germany.
| | - Radovan Herchel
- Department of Inorganic Chemistry & Regional Centre of Advanced Technologies and Materials, Faculty of Science, Palacký University, 17. listopadu 12, CZ-77146 Olomouc, Czech Republic.
| | - Jan Hošek
- Department of Inorganic Chemistry & Regional Centre of Advanced Technologies and Materials, Faculty of Science, Palacký University, 17. listopadu 12, CZ-77146 Olomouc, Czech Republic.
| | - Zdeněk Trávníček
- Department of Inorganic Chemistry & Regional Centre of Advanced Technologies and Materials, Faculty of Science, Palacký University, 17. listopadu 12, CZ-77146 Olomouc, Czech Republic.
| | - Roland C Fischer
- Institut für Anorganische Chemische, Technische Universität Graz, Stremayrgasse 9/V, A-8010 Graz, Austria
| | - Franz A Mautner
- Institut für Physikalische and Theoretische Chemie, Technische Universität Graz, Stremayrgasse 9/II, A-8010, Graz, Austria.
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Bonsignore R, Russo F, Terenzi A, Spinello A, Lauria A, Gennaro G, Almerico AM, Keppler BK, Barone G. The interaction of Schiff Base complexes of nickel(II) and zinc(II) with duplex and G-quadruplex DNA. J Inorg Biochem 2017; 178:106-114. [PMID: 29128495 DOI: 10.1016/j.jinorgbio.2017.10.010] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2017] [Revised: 10/19/2017] [Accepted: 10/25/2017] [Indexed: 12/31/2022]
Affiliation(s)
- Riccardo Bonsignore
- Dipartimento di Scienze e Tecnologie Biologiche, Chimiche e Farmaceutiche, Università degli studi di Palermo, Viale delle Scienze, Edificio 17, 90128 Palermo, Italy
| | - Fabrizia Russo
- Dipartimento di Scienze e Tecnologie Biologiche, Chimiche e Farmaceutiche, Università degli studi di Palermo, Viale delle Scienze, Edificio 17, 90128 Palermo, Italy
| | - Alessio Terenzi
- Institute of Inorganic Chemistry, University of Vienna, Waehringerstr. 42, A-1090 Vienna, Austria; Research Platform "Translational Cancer Therapy Research", University of Vienna and Medical University of Vienna, Vienna, Austria
| | - Angelo Spinello
- CNR-IOM-Democritos National Simulation Center c/o SISSA, via Bonomea 265, 34165 Trieste, Italy
| | - Antonino Lauria
- Dipartimento di Scienze e Tecnologie Biologiche, Chimiche e Farmaceutiche, Università degli studi di Palermo, Viale delle Scienze, Edificio 17, 90128 Palermo, Italy
| | - Giuseppe Gennaro
- Dipartimento di Scienze e Tecnologie Biologiche, Chimiche e Farmaceutiche, Università degli studi di Palermo, Viale delle Scienze, Edificio 17, 90128 Palermo, Italy
| | - Anna Maria Almerico
- Dipartimento di Scienze e Tecnologie Biologiche, Chimiche e Farmaceutiche, Università degli studi di Palermo, Viale delle Scienze, Edificio 17, 90128 Palermo, Italy
| | - Bernhard K Keppler
- Institute of Inorganic Chemistry, University of Vienna, Waehringerstr. 42, A-1090 Vienna, Austria; Research Platform "Translational Cancer Therapy Research", University of Vienna and Medical University of Vienna, Vienna, Austria
| | - Giampaolo Barone
- Dipartimento di Scienze e Tecnologie Biologiche, Chimiche e Farmaceutiche, Università degli studi di Palermo, Viale delle Scienze, Edificio 17, 90128 Palermo, Italy.
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Sreekumar SS, Mohan N, Kurup MRP. Water-Encapsulated Ni(II) Salphen-Type Host Complexes: Experimental and Theoretical Analysis of Potentially Bioactive Quasi-Isostructural Polymorphs. ChemistrySelect 2017. [DOI: 10.1002/slct.201701229] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Sreejith S. Sreekumar
- Department of Applied chemistry; Cochin University of Science and Technology; Kochi Kerala-682022 India
| | - Nithya Mohan
- Department of Applied chemistry; Cochin University of Science and Technology; Kochi Kerala-682022 India
| | - Maliyeckal R. Prathapachandra Kurup
- Department of Applied chemistry; Cochin University of Science and Technology; Kochi Kerala-682022 India
- Department of chemistry, School of Physical Sciences; Central University of Kerala, Riverside Transit campus; Neeleshwar Kerala-671314 India
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16
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Synthesis, spectral characterization, DNA binding ability and anti-cancer screening of new acridine-based derivatives. Med Chem Res 2017. [DOI: 10.1007/s00044-017-1931-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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17
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Alonso-de Castro S, Ruggiero E, Ruiz-de-Angulo A, Rezabal E, Mareque-Rivas JC, Lopez X, López-Gallego F, Salassa L. Riboflavin as a bioorthogonal photocatalyst for the activation of a Pt IV prodrug. Chem Sci 2017; 8:4619-4625. [PMID: 28626570 PMCID: PMC5471451 DOI: 10.1039/c7sc01109a] [Citation(s) in RCA: 56] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2017] [Accepted: 04/13/2017] [Indexed: 12/12/2022] Open
Abstract
Encouraging developments demonstrate that few transition metal and organometallic catalysts can operate in a bioorthogonal fashion and promote non-natural chemistry in living systems by minimizing undesired side reactions with cellular components. These catalytic processes have potential for applications in medicinal chemistry and chemical biology. However, the stringent conditions of the cell environment severely limit the number of accessible metal catalysts and exogenous reactions. Herein, we report an unorthodox approach and a new type of bioorthogonal catalytic reaction, in which a metal complex is an unconventional substrate and an exogenous biological molecule acts as a catalyst. In this reaction, riboflavin photocatalytically converts a PtIV prodrug into cisplatin within the biological environment. Due to the catalytic activity of riboflavin, cisplatin-like apoptosis is induced in cancer cells under extremely low doses of light, potentially preventing systemic off-target reactions. Photocatalytic and bioorthogonal turnover of PtIV into PtII species is an attractive strategy to amplify the antineoplastic action of metal-based chemotherapeutics with spatio-temporal control.
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Affiliation(s)
| | - Emmanuel Ruggiero
- CIC biomaGUNE , Paseo de Miramón 182 , Donostia-San Sebastián , 20014 , Spain
| | - Ane Ruiz-de-Angulo
- CIC biomaGUNE , Paseo de Miramón 182 , Donostia-San Sebastián , 20014 , Spain
| | - Elixabete Rezabal
- Farmazia Fakultatea , Kimika Fisikoa Departamentua , Euskal Herriko Unibertsitatea , UPV/EHU , 01006 , Vitoria-Gasteiz , Spain
- Donostia International Physics Center (DIPC) , P.K. 1072 , Donostia-San Sebastián , 20080 , Spain
| | - Juan C Mareque-Rivas
- CIC biomaGUNE , Paseo de Miramón 182 , Donostia-San Sebastián , 20014 , Spain
- Ikerbasque , Basque Foundation for Science , Bilbao , 48011 , Spain
| | - Xabier Lopez
- Donostia International Physics Center (DIPC) , P.K. 1072 , Donostia-San Sebastián , 20080 , Spain
- Kimika Fakultatea , Euskal Herriko Unibertsitatea , UPV/EHU , Donostia-San Sebastián 20080 , Spain .
| | - Fernando López-Gallego
- CIC biomaGUNE , Paseo de Miramón 182 , Donostia-San Sebastián , 20014 , Spain
- Ikerbasque , Basque Foundation for Science , Bilbao , 48011 , Spain
| | - Luca Salassa
- CIC biomaGUNE , Paseo de Miramón 182 , Donostia-San Sebastián , 20014 , Spain
- Donostia International Physics Center (DIPC) , P.K. 1072 , Donostia-San Sebastián , 20080 , Spain
- Ikerbasque , Basque Foundation for Science , Bilbao , 48011 , Spain
- Kimika Fakultatea , Euskal Herriko Unibertsitatea , UPV/EHU , Donostia-San Sebastián 20080 , Spain .
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Lee SK, Tan KW, Ng SW. Topoisomerase I inhibition and DNA cleavage by zinc, copper, and nickel derivatives of 2-[2-bromoethyliminomethyl]-4-[ethoxymethyl]phenol complexes exhibiting anti-proliferation and anti-metastasis activity. J Inorg Biochem 2016; 159:14-21. [DOI: 10.1016/j.jinorgbio.2016.02.010] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2015] [Revised: 01/26/2016] [Accepted: 02/10/2016] [Indexed: 12/24/2022]
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19
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G-quadruplex vs. duplex-DNA binding of nickel(II) and zinc(II) Schiff base complexes. J Inorg Biochem 2016; 161:115-21. [PMID: 27230387 DOI: 10.1016/j.jinorgbio.2016.05.010] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2016] [Revised: 04/21/2016] [Accepted: 05/13/2016] [Indexed: 12/29/2022]
Abstract
Novel nickel(II) (1) and zinc(II) (2) complexes of a Salen-like ligand, carrying a pyrimidine ring on the N,N' bridge, were synthesized and characterized. Their interaction with duplex and G-quadruplex DNA was investigated in aqueous solution through UV-visible absorption, circular dichroism and viscometry measurements. The results obtained point out that, while the zinc(II) complex does not interact with both duplex and G-quadruplex DNA, the nickel(II) complex 1 binds preferentially to G-quadruplex respect to duplex-DNA, with values of the DNA-binding constants, Kb, 2.6×10(5)M(-1) and 3.5×10(4)M(-1), respectively. Molecular dynamics simulations provided an atomic level model of the top-stacking binding occurring between 1 and hTelo (a 22-mer sequence oligonucleotide) in G-quadruplex conformation.
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20
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Terenzi A, Lötsch D, van Schoonhoven S, Roller A, Kowol CR, Berger W, Keppler BK, Barone G. Another step toward DNA selective targeting: Ni(II) and Cu(II) complexes of a Schiff base ligand able to bind gene promoter G-quadruplexes. Dalton Trans 2016; 45:7758-67. [PMID: 27054617 PMCID: PMC5048337 DOI: 10.1039/c6dt00648e] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2016] [Accepted: 04/01/2016] [Indexed: 12/31/2022]
Abstract
DNA G-rich sequences are able to form four-stranded structures organized in stacked guanine tetrads. These structures, called G-quadruplexes, were found to have an important role in the regulation of oncogenes expression and became, for such a reason, appealing targets for anticancer drugs. Aiming at finding selective G-quadruplex binders, we have designed, synthesized and characterized a new water soluble Salen-like Schiff base ligand and its Ni(II) and Cu(II) metal complexes. UV-Vis, circular dichroism and FRET measurements indicated that the nickel complex can stabilize oncogene promoter G-quadruplexes with high selectivity, presenting no interactions with duplex DNA at all. The same compound exhibited dose-dependent cytotoxic activity in MCF-7 breast cancer cells when combined with lipofectamine as lipophilic carrier.
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Affiliation(s)
- Alessio Terenzi
- Institute of Inorganic Chemistry, University of Vienna, Waehringerstr. 42, A-1090 Vienna, Austria. and Research Platform "Translational Cancer Therapy Research", University of Vienna and Medical University of Vienna, Vienna, Austria
| | - Daniela Lötsch
- Department of Medicine I, Institute of Cancer Research and Comprehensive Cancer Center, Medical University Vienna, Borschkegasse 8a, A-1090 Vienna, Austria
| | - Sushilla van Schoonhoven
- Department of Medicine I, Institute of Cancer Research and Comprehensive Cancer Center, Medical University Vienna, Borschkegasse 8a, A-1090 Vienna, Austria
| | - Alexander Roller
- Institute of Inorganic Chemistry, University of Vienna, Waehringerstr. 42, A-1090 Vienna, Austria.
| | - Christian R Kowol
- Institute of Inorganic Chemistry, University of Vienna, Waehringerstr. 42, A-1090 Vienna, Austria. and Research Platform "Translational Cancer Therapy Research", University of Vienna and Medical University of Vienna, Vienna, Austria
| | - Walter Berger
- Research Platform "Translational Cancer Therapy Research", University of Vienna and Medical University of Vienna, Vienna, Austria and Department of Medicine I, Institute of Cancer Research and Comprehensive Cancer Center, Medical University Vienna, Borschkegasse 8a, A-1090 Vienna, Austria
| | - Bernhard K Keppler
- Institute of Inorganic Chemistry, University of Vienna, Waehringerstr. 42, A-1090 Vienna, Austria. and Research Platform "Translational Cancer Therapy Research", University of Vienna and Medical University of Vienna, Vienna, Austria
| | - Giampaolo Barone
- Dipartimento di Scienze e Tecnologie Biologiche, Chimiche e Farmaceutiche, Viale delle Scienze, Edificio 17, 90128 Palermo, Italy.
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21
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Terenzi A, Lauria A, Almerico AM, Barone G. Zinc complexes as fluorescent chemosensors for nucleic acids: new perspectives for a "boring" element. Dalton Trans 2015; 44:3527-35. [PMID: 25375997 DOI: 10.1039/c4dt02881c] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Zinc(II) complexes are effective and selective nucleic acid-binders and strongly fluorescent molecules in the low energy range, from the visible to the near infrared. These two properties have often been exploited to quantitatively detect nucleic acids in biological samples, in both in vitro and in vivo models. In particular, the fluorescent emission of several zinc(II) complexes is drastically enhanced or quenched by the binding to nucleic acids and/or upon visible light exposure, in a different fashion in bulk solution and when bound to DNA. The twofold objective of this perspective is (1) to review recent utilisations of zinc(II) complexes as selective fluorescent probes for nucleic acids and (2) to highlight their novel potential applications as diagnostic tools based on their photophysical properties.
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Affiliation(s)
- Alessio Terenzi
- Dipartimento di Scienze e Tecnologie Biologiche, Chimiche e Farmaceutiche, Viale delle Scienze, Edificio 17, 90128 Palermo, Italy.
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22
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Biancardi A, Burgalassi A, Terenzi A, Spinello A, Barone G, Biver T, Mennucci B. A Theoretical and Experimental Investigation of the Spectroscopic Properties of a DNA-Intercalator Salphen-Type ZnIIComplex. Chemistry 2014; 20:7439-47. [DOI: 10.1002/chem.201304876] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2013] [Indexed: 01/22/2023]
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23
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Terenzi A, Bonsignore R, Spinello A, Gentile C, Martorana A, Ducani C, Högberg B, Almerico AM, Lauria A, Barone G. Selective G-quadruplex stabilizers: Schiff-base metal complexes with anticancer activity. RSC Adv 2014. [DOI: 10.1039/c4ra05355a] [Citation(s) in RCA: 64] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Molecular dynamics simulations and quantum mechanics/molecular mechanics calculations provided a mechanism for G-quadruplex binding of three transition metal complexes.
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Affiliation(s)
- Alessio Terenzi
- Dipartimento di Scienze e Tecnologie Biologiche
- 90128 Palermo, Italy
| | | | - Angelo Spinello
- Dipartimento di Scienze e Tecnologie Biologiche
- 90128 Palermo, Italy
| | - Carla Gentile
- Dipartimento di Scienze e Tecnologie Biologiche
- 90128 Palermo, Italy
| | | | - Cosimo Ducani
- Swedish Medical Nanoscience Center
- Department of Neuroscience
- Karolinska Institutet
- Stockholm, Sweden
| | - Björn Högberg
- Swedish Medical Nanoscience Center
- Department of Neuroscience
- Karolinska Institutet
- Stockholm, Sweden
| | | | - Antonino Lauria
- Dipartimento di Scienze e Tecnologie Biologiche
- 90128 Palermo, Italy
| | - Giampaolo Barone
- Dipartimento di Scienze e Tecnologie Biologiche
- 90128 Palermo, Italy
- Istituto EuroMediterraneo di Scienza e Tecnologia
- 90139 Palermo, Italy
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Lauria A, Bonsignore R, Terenzi A, Spinello A, Giannici F, Longo A, Almerico AM, Barone G. Nickel(ii), copper(ii) and zinc(ii) metallo-intercalators: structural details of the DNA-binding by a combined experimental and computational investigation. Dalton Trans 2014; 43:6108-19. [DOI: 10.1039/c3dt53066c] [Citation(s) in RCA: 73] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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