1
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Clowes SR, Ali Y, Astley OR, Răsădean DM, Pantoş GD. The Influence of Chirality on the β-Amino-Acid Naphthalenediimides/G-Quadruplex DNA Interaction. Molecules 2023; 28:7291. [PMID: 37959711 PMCID: PMC10647805 DOI: 10.3390/molecules28217291] [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: 09/05/2023] [Revised: 10/23/2023] [Accepted: 10/25/2023] [Indexed: 11/15/2023] Open
Abstract
G-quadruplexes (G4s) have been identified as a potential alternative chemotherapy target. A series of eight β-amino acid derived naphthalenediimides (NDI) were screened against a series of oncogenic G4 sequences: c-KIT1, h-TELO, and TBA. Three sets of enantiomers were investigated to further our understanding of the effect of point chirality on G4 stabilisation. Enantioselective binding behaviour was observed with both c-KIT1 and h-TELO. Docking studies using GNINA and UV-vis titrations were employed to better understand this selective binding behaviour.
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Affiliation(s)
| | | | | | | | - G. Dan Pantoş
- Department of Chemistry, University of Bath, Claverton Down, Bath BA2 7AY, UK
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2
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Zhang Y, Cui T, Yang J, Huang Y, Ren J, Qu X. Chirality-Dependent Reprogramming of Macrophages by Chiral Nanozymes. Angew Chem Int Ed Engl 2023; 62:e202307076. [PMID: 37309708 DOI: 10.1002/anie.202307076] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2023] [Revised: 06/08/2023] [Accepted: 06/13/2023] [Indexed: 06/14/2023]
Abstract
It is known that extracellular free radical reactive oxygen species (ROS) rather than intracellular ROS plays a non-substitutable role in regulation of tumor-suppressing (M1) tumor-associated macrophages (TAMs) polarization. However, most therapeutic nanoplatforms mainly provide intracellular ROS and exhibit insufficient accumulation near TAMs, which strongly limits the macrophage-based immunotherapeutic effects. Here we design and synthesize chiral MoS2 /CoS2 nanozymes with peroxidase (POD)-like and catalase (CAT)-like activities to efficiently modulate TAMs polarization and reverse tumor immunosuppression by harnessing their chirality-specific interactions with biological systems. MoS2 /CoS2 nanoparticles coordinated with d-chirality (d-NPs, right-handed) show improved pharmacokinetics with longer circulating half-life and higher tumor accumulation compared with their l (left-handed)- and dl (racemate)-counterparts. Further, d-NPs can escape from macrophage uptake in the tumor microenvironment (TME) with the aid of cell-unpreferred opposite chirality and act as extracellular hydroxyl radicals (⋅OH) and oxygen (O2 ) generators to efficiently repolarize TAMs into M1 phenotype. On the contrary, l-NPs showed high cellular uptake due to chirality-driven homologous adhesion between l-NPs and macrophage membrane, leading to limited M1 polarization performance. As the first example for developing chiral nanozymes as extracellular-localized ROS generators to reprogram TAMs for cancer immunotherapy, this study opens an avenue for applications of chiral nanozymes in immunomodulation.
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Affiliation(s)
- Yu Zhang
- Laboratory of Chemical Biology and State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin, 130022, P. R. China
- School of Applied Chemistry and Engineering, University of Science and Technology of China, Hefei, Anhui, 230026, P. R. China
| | - Tingting Cui
- Laboratory of Chemical Biology and State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin, 130022, P. R. China
- School of Applied Chemistry and Engineering, University of Science and Technology of China, Hefei, Anhui, 230026, P. R. China
| | - Jie Yang
- Laboratory of Chemical Biology and State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin, 130022, P. R. China
- School of Applied Chemistry and Engineering, University of Science and Technology of China, Hefei, Anhui, 230026, P. R. China
| | - Ying Huang
- Laboratory of Chemical Biology and State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin, 130022, P. R. China
- School of Applied Chemistry and Engineering, University of Science and Technology of China, Hefei, Anhui, 230026, P. R. China
| | - Jinsong Ren
- Laboratory of Chemical Biology and State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin, 130022, P. R. China
- School of Applied Chemistry and Engineering, University of Science and Technology of China, Hefei, Anhui, 230026, P. R. China
| | - Xiaogang Qu
- Laboratory of Chemical Biology and State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin, 130022, P. R. China
- School of Applied Chemistry and Engineering, University of Science and Technology of China, Hefei, Anhui, 230026, P. R. China
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3
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Savva L, Fossépré M, Keramidas O, Themistokleous A, Rizeq N, Panagiotou N, Leclercq M, Nicolaidou E, Surin M, Hayes SC, Georgiades SN. Gaining Insights on the Interactions of a Class of Decorated (2-([2,2'-Bipyridin]-6-yl)phenyl)platinum Compounds with c-Myc Oncogene Promoter G-Quadruplex and Other DNA Structures. Chemistry 2022; 28:e202201497. [PMID: 35726630 PMCID: PMC9804160 DOI: 10.1002/chem.202201497] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2022] [Indexed: 01/05/2023]
Abstract
Organometallic molecules offer some of the most promising scaffolds for interaction with G-quadruplex nucleic acids. We report the efficient synthesis of a family of organoplatinum(II) complexes, featuring a 2-([2,2'-bipyridin]-6-yl)phenyl tridentate (N∧ N∧ C) ligand, that incorporates peripheral side-chains aiming at enhancing and diversifying its interaction capabilities. These include a di-isopropyl carbamoyl amide, a morpholine ethylenamide, two enantiomeric proline imides and an oxazole. The binding affinities of the Pt-complexes were evaluated via UV-vis and fluorescence titrations, against 5 topologically-distinct DNA structures, including c-myc G-quadruplex, two telomeric (22AG) G-quadruplexes, a duplex (ds26) and a single-stranded (polyT) DNA. All compounds exhibited binding selectivity in favour of c-myc, with association constants (Ka ) in the range of 2-5×105 M-1 , lower affinity for both folds of 22AG and for ds26 and negligible affinity for polyT. Remarkable emission enhancements (up to 200-fold) upon addition of excess DNA were demonstrated by a subset of the compounds with c-myc, providing a basis for optical selectivity, since optical response to all other tested DNAs was low. A c-myc DNA-melting experiment showed significant stabilizing abilities for all compounds, with the most potent binder, the morpholine-Pt-complex, exhibiting a ΔTm >30 °C, at 1 : 5 DNA-to-ligand molar ratio. The same study implied contributions of the diverse side-chains to helix stabilization. To gain direct evidence of the nature of the interactions, mixtures of c-myc with the four most promising compounds were studied via UV Resonance Raman (UVRR) spectroscopy, which revealed end-stacking binding mode, combined with interactions of side-chains with loop nucleobase residues. Docking simulations were conducted to provide insights into the binding modes for the same four Pt-compounds, suggesting that the binding preference for two alternative orientations of the c-myc G-quadruplex thymine 'cap' ('open' vs. 'closed'), as well as the relative contributions to affinity from end-stacking and H-bonding, are highly dependent on the nature of the interacting Pt-complex side-chain.
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Affiliation(s)
- Loukiani Savva
- Department of ChemistryUniversity of Cyprus1 Panepistimiou Avenue, Aglandjia2109NicosiaCyprus
| | - Mathieu Fossépré
- Laboratory for Chemistry of Novel MaterialsUniversity of Mons – UMONS20 Place du ParcB-7000MonsBelgium
| | - Odysseas Keramidas
- Department of ChemistryUniversity of Cyprus1 Panepistimiou Avenue, Aglandjia2109NicosiaCyprus
| | | | - Natalia Rizeq
- Department of ChemistryUniversity of Cyprus1 Panepistimiou Avenue, Aglandjia2109NicosiaCyprus
| | - Nikos Panagiotou
- Department of ChemistryUniversity of Cyprus1 Panepistimiou Avenue, Aglandjia2109NicosiaCyprus
| | - Maxime Leclercq
- Laboratory for Chemistry of Novel MaterialsUniversity of Mons – UMONS20 Place du ParcB-7000MonsBelgium
| | - Eliana Nicolaidou
- Department of ChemistryUniversity of Cyprus1 Panepistimiou Avenue, Aglandjia2109NicosiaCyprus
| | - Mathieu Surin
- Laboratory for Chemistry of Novel MaterialsUniversity of Mons – UMONS20 Place du ParcB-7000MonsBelgium
| | - Sophia C. Hayes
- Department of ChemistryUniversity of Cyprus1 Panepistimiou Avenue, Aglandjia2109NicosiaCyprus
| | - Savvas N. Georgiades
- Department of ChemistryUniversity of Cyprus1 Panepistimiou Avenue, Aglandjia2109NicosiaCyprus
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4
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Qin H, Guo Y. Targeting Telomerase Enhances Cytotoxicity of Salinomycin in Cancer Cells. ACS OMEGA 2022; 7:30565-30570. [PMID: 36061682 PMCID: PMC9435028 DOI: 10.1021/acsomega.2c04082] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/29/2022] [Accepted: 08/09/2022] [Indexed: 06/15/2023]
Abstract
Salinomycin exhibits significant systemic adverse reactions such as tachycardia and myoglobinuria in mammals, which hinders its application as a drug for human cancers. Although many strategies aimed at increasing salinomycin's toxicity to cancer cells have been identified to allow a lower dose of salinomycin to be used, they often cause normal cell damage by themselves. Thus, it is urgent to find more effective methods to increase salinomycin's toxicity to cancer cells with little influences on normal cells. Telomerase, which is expressed highly in most cancer cells rather than normal somatic cells, plays central roles in cancer cell fate regulation. Targeting telomerase represents a potential method for enhancing salinomycin's cytotoxicity to cancer cells with little effects on normal cells. Herein, we improve the toxicity of salinomycin against cancer cells by telomerase inhibition BIBR1532 (BIBR), which binds to the active site of telomerase reverse transcriptase. We find that a non-toxic dose of BIBR can enhance cytotoxicity of salinomycin in MCF-7 and MDA-MB-231 cells. Moreover, BIBR enhances mammosphere formation inhibition mediated by salinomycin in MCF-7 and MDA-MB-231 cells. Further studies show that BIBR enhances tumor growth inhibition induced by salinomycin in vivo. To our knowledge, this is the first example that targeting telomerase improves anti-cancer effects of salinomycin.
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5
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Chikhale RV, Guneri D, Yuan R, Morris CJ, Waller ZAE. Identification of sugar-containing natural products that interact with i-motif DNA. Bioorg Med Chem Lett 2022; 73:128886. [PMID: 35835380 DOI: 10.1016/j.bmcl.2022.128886] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2022] [Revised: 07/05/2022] [Accepted: 07/07/2022] [Indexed: 11/30/2022]
Abstract
There are thousands of compounds shown to interact with G-quadruplex DNA, yet very few which target i-motif (iM) DNA. Previous work showed that tobramycin can interact with iM- DNA, indicating the potential for sugar-molecules to target these structures. Computational approaches indicated that the sugar-containing natural products baicalin and geniposidic acid had potential to target iM-DNA. We assessed the DNA interacting properties of these compounds using FRET-based DNA melting and a fluorescence-based displacement assay using iM-DNA structures from the human telomere and the insulin linked polymorphic region (ILPR), as well as complementary G-quadruplex and double stranded DNA. Both baicalin and geniposidic acid show promise as iM-interacting compounds with potential for use in experiments into the structure and function of i-motif forming DNA sequences and present starting points for further synthetic development of these as probes for iM-DNA.
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Affiliation(s)
| | - Dilek Guneri
- UCL School of Pharmacy, 29-39 Brunswick Square, London WC1N 1AX, UK
| | - Robert Yuan
- UCL School of Pharmacy, 29-39 Brunswick Square, London WC1N 1AX, UK
| | | | - Zoë A E Waller
- UCL School of Pharmacy, 29-39 Brunswick Square, London WC1N 1AX, UK.
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6
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Dudek M, Deiana M, Szkaradek K, Janicki MJ, Pokładek Z, Góra RW, Matczyszyn K. Light-Induced Modulation of Chiral Functions in G-Quadruplex-Photochrome Systems. J Phys Chem Lett 2021; 12:9436-9441. [PMID: 34554762 PMCID: PMC8503878 DOI: 10.1021/acs.jpclett.1c02207] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2021] [Accepted: 09/20/2021] [Indexed: 05/05/2023]
Abstract
The design of artificially engineered chiral structures has received much attention, but the implementation of dynamic functions to modulate the chiroptical response of the systems is less explored. Here, we present a light-responsive G-quadruplex (G4)-based assembly in which chirality enrichment is induced, tuned, and fueled by molecular switches. In particular, the mirror-image dependence on photoactivated azo molecules, undergoing trans-to-cis isomerization, shows chiral recognition effects on the inherent flexibility and conformational diversity of DNA G4s having distinct handedness (right- and left-handed). Through a detailed experimental and computational analysis, we bring compelling evidence on the binding mode of the photochromes on G4s, and we rationalize the origin of the chirality effect that is associated with the complexation event.
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Affiliation(s)
- Marta Dudek
- Advanced
Materials Engineering and Modelling Group, Faculty of Chemistry, Wroclaw University of Science and Technology, Wyb. Wyspianskiego 27, 50-370 Wroclaw, Poland
| | - Marco Deiana
- Department
of Medical Biochemistry and Biophysics, Umeå University, 90187 Umeå, Sweden
| | - Kinga Szkaradek
- Theoretical
Photochemistry and Photophysics Group, Faculty of Chemistry, Wroclaw University of Science and Technology, Wyb. Wyspianskiego 27, 50-370 Wroclaw, Poland
| | - Mikołaj J. Janicki
- Theoretical
Photochemistry and Photophysics Group, Faculty of Chemistry, Wroclaw University of Science and Technology, Wyb. Wyspianskiego 27, 50-370 Wroclaw, Poland
| | - Ziemowit Pokładek
- Advanced
Materials Engineering and Modelling Group, Faculty of Chemistry, Wroclaw University of Science and Technology, Wyb. Wyspianskiego 27, 50-370 Wroclaw, Poland
| | - Robert W. Góra
- Theoretical
Photochemistry and Photophysics Group, Faculty of Chemistry, Wroclaw University of Science and Technology, Wyb. Wyspianskiego 27, 50-370 Wroclaw, Poland
| | - Katarzyna Matczyszyn
- Advanced
Materials Engineering and Modelling Group, Faculty of Chemistry, Wroclaw University of Science and Technology, Wyb. Wyspianskiego 27, 50-370 Wroclaw, Poland
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7
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Malina J, Kostrhunova H, Scott P, Brabec V. Fe II Metallohelices Stabilize DNA G-Quadruplexes and Downregulate the Expression of G-Quadruplex-Regulated Oncogenes. Chemistry 2021; 27:11682-11692. [PMID: 34048082 DOI: 10.1002/chem.202101388] [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: 04/17/2021] [Indexed: 12/15/2022]
Abstract
DNA G-quadruplexes (G4s) have been identified within the promoter regions of many proto-oncogenes. Thus, G4s represent attractive targets for cancer therapy, and the design and development of new drugs as G4 binders is a very active field of medicinal chemistry. Here, molecular biophysics and biology methods were employed to investigate the interaction of chiral metallohelices with a series of four DNA G4s (hTelo, c-myc, c-kit1, c-kit2) that are formed by the human telomeric sequence (hTelo) and in the promoter regions of c-MYC and c-KIT proto-oncogenes. We show that the investigated water-compatible, optically pure metallohelices, which are made by self-assembly of simple nonpeptidic organic components around FeII ions and exhibit bioactivity emulating the natural systems, bind with high affinity to G4 DNA and much lower affinity to duplex DNA. Notably, both enantiomers of a metallohelix containing a m-xylenyl bridge (5 b) were found to effectively inhibit primer elongation catalyzed by Taq DNA polymerase by stabilizing G4 structures formed in the template strands containing c-myc and c-kit2 G4-forming sequences. Moreover, both enantiomers of 5 b downregulated the expression of c-MYC and c-KIT oncogenes in human embryonic kidney cells at mRNA and protein levels. As metallohelices also bind alternative nucleic acid structures, they hold promise as potential multitargeted drugs.
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Affiliation(s)
- Jaroslav Malina
- Institute of Biophysics, Czech Academy of Sciences, Kralovopolska 135, 61265, Brno, Czech Republic
| | - Hana Kostrhunova
- Institute of Biophysics, Czech Academy of Sciences, Kralovopolska 135, 61265, Brno, Czech Republic
| | - Peter Scott
- Department of Chemistry, University of Warwick, Coventry, CV4 7AL, UK
| | - Viktor Brabec
- Institute of Biophysics, Czech Academy of Sciences, Kralovopolska 135, 61265, Brno, Czech Republic
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8
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Song H, Postings M, Scott P, Rogers NJ. Metallohelices emulate the properties of short cationic α-helical peptides. Chem Sci 2021; 12:1620-1631. [PMID: 34163922 PMCID: PMC8179244 DOI: 10.1039/d0sc06412b] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2020] [Accepted: 12/24/2020] [Indexed: 12/15/2022] Open
Abstract
Naturally occurring peptides in many living systems perform antimicrobial and anticancer host defence roles, but their potential for clinical application is limited by low metabolic stability and relatively high costs of goods. Self-assembled helical metal complexes provide an attractive synthetic platform for non-peptidic architectures that can emulate some of the properties of short cationic α-helical peptides, with tuneable charge, shape, size and amphipathicity. Correspondingly there is a growing body of evidence demonstrating that these supramolecular architectures exhibit bioactivity that emulates that of the natural systems. We review that evidence in the context of synthetic advances in the area, driven by the potential for biomedical applications. We note some design considerations for new biologically-relevant metallohelices, and give our outlook on the future of these compounds as therapeutic peptidomimetics.
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9
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Liu R, Yuan C, Feng Y, Qian J, Huang X, Chen Q, Zhou S, Ding Y, Zhai B, Mei W, Yao L. Microwave-assisted synthesis of ruthenium(ii) complexes containing levofloxacin-induced G2/M phase arrest by triggering DNA damage. RSC Adv 2021; 11:4444-4453. [PMID: 35424377 PMCID: PMC8694345 DOI: 10.1039/d0ra09418h] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2020] [Accepted: 12/18/2020] [Indexed: 12/24/2022] Open
Abstract
Ru(ii) complexes have attracted increasing attention as promising antitumor agents for their relatively low toxicity, high affinity to DNA molecules, and correlation with multiple targets. Meanwhile, quinolones are synthetic antibacterial agents widely used in the clinical practice. In this paper, two novel Ru(ii) complexes coordinated by levofloxacin (LOFLX), [Ru(bpy)2(LOFLX)]·2ClO4 (1), and [Ru(dmbpy)2(LOFLX)]·2ClO4 (2) (bpy = 2,2′-bipyridine, dmbpy = 4,4′-dimethyl-2,2′-bipyridine) were synthesized with high efficiency under microwave irradiation and characterized by ESI-MS, 1H NMR, and 13C NMR. The binding behavior of these complexes with double-strand calf thymus DNA(CT-DNA) was investigated using spectroscopy, molecular docking, and density functional theory calculations. Results showed that 2 exhibited higher binding affinity than 1 and LOFLX. Further studies showed that 2 could induce the G2/M phase arrest of A549 cells via DNA damage. In summary, these results indicated that 2 could be developed as a potential anticancer agent in treatment of lung cancer through the induction of cell cycle arrest at G2/M phase by triggering DNA damage. This study showed that levofloxacin-based ruthenium(ii) complex 2 effectively inhibited the growth of A549 cells by inducing G2/M phase arrest through triggering DNA damage.![]()
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Affiliation(s)
- Ruotong Liu
- The First Affiliation Hospital of Guangdong Pharmaceutical University
- Guangzhou 510062
- China
- School of Pharmacy
- Guangdong Pharmaceutical University
| | - Chanling Yuan
- School of Pharmacy
- Guangdong Pharmaceutical University
- Guangzhou 510006
- China
| | - Yin Feng
- The First Affiliation Hospital of Guangdong Pharmaceutical University
- Guangzhou 510062
- China
| | - Jiayi Qian
- School of Pharmacy
- Guangdong Pharmaceutical University
- Guangzhou 510006
- China
| | - Xiaoting Huang
- School of Pharmacy
- Guangdong Pharmaceutical University
- Guangzhou 510006
- China
| | - Qiutong Chen
- School of Politics and Public Administration
- South China Normal University
- Guangzhou
- China
| | - Shuyuan Zhou
- Guangdong Province Engineering Technology Centre for Molecular Probe and Bio-Medical Imaging
- Guangzhou 510006
- China
| | - Yin Ding
- The First Affiliation Hospital of Guangdong Pharmaceutical University
- Guangzhou 510062
- China
| | - Bingbing Zhai
- School of Pharmacy
- Guangdong Pharmaceutical University
- Guangzhou 510006
- China
| | - Wenjie Mei
- School of Pharmacy
- Guangdong Pharmaceutical University
- Guangzhou 510006
- China
- Guangdong Province Engineering Technology Centre for Molecular Probe and Bio-Medical Imaging
| | - Liangzhong Yao
- The First Affiliation Hospital of Guangdong Pharmaceutical University
- Guangzhou 510062
- China
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10
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Malina J, Scott P, Brabec V. Stabilization of human telomeric RNA G-quadruplex by the water-compatible optically pure and biologically-active metallohelices. Sci Rep 2020; 10:14543. [PMID: 32884069 PMCID: PMC7471899 DOI: 10.1038/s41598-020-71429-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2020] [Accepted: 08/07/2020] [Indexed: 02/06/2023] Open
Abstract
RNA G-quadruplexes have been suggested to play key roles in fundamental biological processes and are linked to human diseases. Thus, they also represent good potential therapeutic targets. Here, we describe, using the methods of molecular biophysics, interactions of a series of biologically-active supramolecular cationic metallohelices with human telomeric RNA G-quadruplex. We demonstrate that the investigated metallohelices bind with a high affinity to human telomeric RNA G-quadruplex and that their binding selectivity considerably differs depending on the dimensions and overall shape of the metallohelices. Additionally, the investigated metallohelices inhibit DNA synthesis on the RNA template containing four repeats of the human telomeric sequence by stabilizing the RNA G-quadruplex structure. Collectively, the results of this study suggest that stabilization of RNA sequences capable of G-quadruplex formation by metallohelices investigated in this work might contribute to the mechanism of their biological activity.
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Affiliation(s)
- Jaroslav Malina
- Institute of Biophysics, Czech Academy of Sciences, Kralovopolska 135, 61265, Brno, Czech Republic
| | - Peter Scott
- Department of Chemistry, University of Warwick, Gibbet Hill Road, Coventry, CV4 7AL, UK
| | - Viktor Brabec
- Institute of Biophysics, Czech Academy of Sciences, Kralovopolska 135, 61265, Brno, Czech Republic.
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11
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Wu Q, Zhang SY, Liao SY, Cao JQ, Zheng WJ, Li L, Mei WJ. Chiral Ru(ii) complexes act as a potential non-viral gene carrier for directional transportation to the nucleus and cytoplasm. Metallomics 2020; 12:504-513. [PMID: 32051986 DOI: 10.1039/c9mt00192a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Guanine-rich DNA sequences can spontaneously fold into four-stranded structures called G-quadruplexes (G4s). G4s have been identified extensively in the promoter regions of several proto-oncogenes, including c-myc, as well as telomeres. G4s have attracted an increasing amount of attention in the field of nanotechnology because of their use as versatile building blocks of DNA-based nanostructures. In this study, we report the self-assembly of c-myc G-quadruplex DNA controlled by a pair of chiral ruthenium(ii) complexes coordinated by 2-(4-phenyacetylenephenyl)-1H-imidazo[4,5f][1,10]phenanthroline (PBEPIP), Λ-[Ru(bpy)2(PBEPIP)](ClO4)2 (Λ-RM0627, bpy = bipyridine) and Δ-[Ru(bpy)2(PBEPIP)](ClO4)2 (Δ-RM0627). Λ-RM0627 could promote the high-order self-assembly of c-myc G-quadruplex DNA into a nanowire structure, whereas Δ-RM0627 could induce DNA condensation into G-quadruplex aggregates. Moreover, in vitro studies on human liver carcinoma HepG2 cells showed that the nanowire of c-myc G-quadruplex DNA promoted by Λ-RM0627 could be localized in the nuclei of cells, whereas the nanoparticle of c-myc G-quadruplex DNA generated by Δ-RM0627 was taken up and localized in the cytoplasm. This study provides examples of the enantioselective self-assembly of G4 DNA molecules controlled by chiral ruthenium(ii) complexes and suggests the potential applications of assembled nanostructures as non-viral DNA vectors for gene therapy.
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Affiliation(s)
- Qiong Wu
- Integrated Chinese and Western Medicine Postdoctoral Research Station, Jinan University, Guangzhou 510632, China.
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12
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Wumaier M, Shi JJ, Yao TM, Hu XC, Gao RR, Shi S. G-quadruplex and duplex DNA binding studies of novel Ruthenium(II) complexes containing ascididemin ligands. J Inorg Biochem 2019; 196:110681. [DOI: 10.1016/j.jinorgbio.2019.03.021] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2018] [Revised: 03/22/2019] [Accepted: 03/27/2019] [Indexed: 11/29/2022]
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13
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Qi Q, Yang C, Xia Y, Guo S, Song D, Su H. Preferential Binding of π-Ligand Porphyrin Targeting 5'-5' Stacking Interface of Human Telomeric RNA G-Quadruplex Dimer. J Phys Chem Lett 2019; 10:2143-2150. [PMID: 30995046 DOI: 10.1021/acs.jpclett.9b00637] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Human telomeric RNA (TERRA) containing thousands of G-rich repeats has the propensity to form parallel-stranded G-quadruplexes. The emerging crucial roles of TERRA G-quadruplexes in RNA biology fuel increasing attention for studying anticancer ligand binding with such structures, which, however, remains scarce. Here we utilized multiple steady-state and time-resolved spectroscopy analyses in conjunction with NMR methods and investigated thoroughly the binding behavior of TMPyP4 to a TERRA G-quadruplex dimer formed by the 10-nucleotide sequence r(GGGUUAGGGU). It is clearly identified that TMPyP4 intercalates into the 5'-5' stacking interface of two G-quadruplex blocks with a binding stoichiometry of 1:1 and binding constant of 1.92 × 106 M-1. This is consistent with the unique TERRA structural features of the enlarged π-π stacking plane of the A·(G·G·G·G)·A hexad at 5'-ends of each G-quadruplex block. The preferential binding of π-ligand porphyrin to the 5'-5' stacking interface of the native TERRA G-quadruplex dimer is first ascertained by the combination of dynamics and structural characterization.
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Affiliation(s)
- Qige Qi
- Beijing National Laboratory for Molecular Science, Institute of Chemistry , Chinese Academy of Science , Beijing 100190 , China
- University of Chinese Academy of Science , Beijing 100049 , China
| | - Chunfan Yang
- College of Chemistry , Beijing Normal University , Beijing 100875 , China
| | - Ye Xia
- College of Chemistry , Beijing Normal University , Beijing 100875 , China
| | - Shaoshi Guo
- College of Chemistry , Beijing Normal University , Beijing 100875 , China
| | - Di Song
- Beijing National Laboratory for Molecular Science, Institute of Chemistry , Chinese Academy of Science , Beijing 100190 , China
| | - Hongmei Su
- College of Chemistry , Beijing Normal University , Beijing 100875 , China
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14
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Importance of Chiral Recognition in Designing Metal-Free Ligands for G-Quadruplex DNA. Molecules 2019; 24:molecules24081473. [PMID: 30991655 PMCID: PMC6514905 DOI: 10.3390/molecules24081473] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2018] [Revised: 04/08/2019] [Accepted: 04/11/2019] [Indexed: 01/26/2023] Open
Abstract
Four pairs of amino acid-functionalized naphthalenediimide enantiomers (d- and l-lysine derived NDIs) were screened toward G-quadruplex forming sequences in telomeres (h-TELO) and oncogene promoters: c-KIT1, c-KIT2, k-RAS and BCL-2. This is the first study to address the effect of point chirality toward G-quadruplex DNA stabilization using purely small organic molecules. Enantioselective behavior toward the majority of ligands was observed, particularly in the case of parallel conformations of c-KIT2 and k-RAS. Additionally, Nε-Boc-l-Lys-NDI and Nε-Boc-d-Lys-NDI discriminate between quadruplexes with parallel and hybrid topologies, which has not previously been observed with enantiomeric ligands.
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15
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Bai M, Pan T, Yu G, Xie Q, Zeng Z, Zhang Y, Zhu D, Mu L, Qian J, Chang B, Mei WJ, Guan S. Chiral ruthenium(II) complex Δ-[Ru(bpy) 2(o-FMPIP)] (bpy = bipyridine, o-FMPIP = 2-(2'-trifluoromethyphenyl) imidazo[4,5-f][1,10]phenanthroline) as potential apoptosis inducer via DNA damage. Eur J Pharmacol 2019; 853:49-55. [PMID: 30880177 DOI: 10.1016/j.ejphar.2019.03.009] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2019] [Revised: 03/05/2019] [Accepted: 03/06/2019] [Indexed: 12/21/2022]
Abstract
Chiral ruthenium(II) complexes have long been considered as potential anticancer agents. Herein, in vivo inhibitory activity of a chiral ruthenium(II) complex coordinated by ligand 2-(2'-trifluoromethyphenyl) imidazo [4,5-f][1,10]phenanthroline, Δ-[Ru(bpy)2(o-FMPIP)] (D0402) on Kunming(KM) mice bearing tumor (H22 hepatic cancer) has been evaluated, and the results showed that the tumor weight of mice treated with 0.22 mg/(kg·day) D0402 via i.v. administration for 7 days decreased about 31.79% compared to the control group, while the body weight, as well as the thymus, spleen, liver, lung, and kidney indices of mice treated with D0402 observed almost no loss compared to the control group. Furthermore, the mechanism studies on anti-angiogenic showed that D0402 could inhibit the formation of angiogenesis in the transgenic Tg(fli1a: EGFP) zebrafish. After treated with D0402, the sub-intestinal vessels(SIVs) of the zebrafish became disordered and chaotic, and was dosage dependent. Moreover, the TUNEL analysis and comet assays revealed that D0402 can induce apoptosis of HepG2 cell through DNA damage, and this was further demonstrated by immunofluorescence analysis with the number of γ-H2AX increased following the increasing amount of D0402. Besides, in vivo toxicity of D0402 has also been investigated on the development of zebrafish embryo, and the results showed that there were no death or development delay occurred for zebrafish embryo treated with D0402 up to concentration of 60 μM. All in together, this study suggested that D0402 can be developed as a potential inhibitor against liver cancer through co-junction of anti-angiogenesis and apoptosis-inducing via DNA damage in the near future.
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Affiliation(s)
- Mingjun Bai
- The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou 510630, China
| | - Tao Pan
- The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou 510630, China
| | - Gengnan Yu
- School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou 510006, China
| | - Qiang Xie
- The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou 510630, China.
| | - Zhaolin Zeng
- The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou 510630, China
| | - Yanyang Zhang
- The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou 510630, China
| | - Duo Zhu
- The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou 510630, China
| | - Luwen Mu
- The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou 510630, China
| | - Jiesheng Qian
- The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou 510630, China
| | - Boyang Chang
- The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou 510630, China
| | - Wen-Jie Mei
- School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou 510006, China; Guangdong Province Engineering Technology Centre for Molecular Probe and Biomedicine Imaging, Guangzhou 510006, China.
| | - Shouhai Guan
- The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou 510630, China.
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16
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Hu X, Yang D, Yao T, Gao R, Wumaier M, Shi S. Regulation of multi-factors (tail/loop/link/ions) for G-quadruplex enantioselectivity of Δ- and Λ- [Ru(bpy) 2(dppz-idzo)] 2. Dalton Trans 2018; 47:5422-5430. [PMID: 29594288 DOI: 10.1039/c8dt00501j] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Chiral recognition of DNA molecules is important because much evidence has indicated that transformations of chirality and diverse conformations of DNA are involved in a series of key biological events. Among these, enrichment of G-quadruplexes (GQs) in the genome, and the exploration of their multiple structures, has aroused great interest. Herein, we compared nearly 100 different sequences with 3'-tail sequences of variable length or different linkers or diverse loops and mutative ionic concentrations. All sequences were capable of forming stable GQs, with fluorescence signal enhancement upon binding with Δ- and Λ- [Ru(bpy)2(dppz-idzo)]2+ (Δ/Λ-1). Our results show that multiple factors, including the 3'-tail length, linkers, loop length and ionic concentration, regulate the enantioselectivity of GQs. Furthermore, molecular docking simulations revealed that chiral recognition of GQs depends on the binding site. To the best of our knowledge, this is the first systematic study regarding the regulation of multi-factors for GQ selectivity of chiral Ru-complexes. These results will serve as a useful reference for enantioselective recognition of genomic GQs and may facilitate the development of chiral anticancer agents for targeting GQs.
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Affiliation(s)
- Xiaochun Hu
- Shanghai Key Lab of Chemical Assessment and Sustainability, Department of Chemistry, Tongji University, 1239 Siping Road, 200092 Shanghai, PR China.
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17
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Che T, Chen SB, Tu JL, Wang B, Wang YQ, Zhang Y, Wang J, Wang ZQ, Zhang ZP, Ou TM, Zhao Y, Tan JH, Huang ZS. Discovery of Novel Schizocommunin Derivatives as Telomeric G-Quadruplex Ligands That Trigger Telomere Dysfunction and the Deoxyribonucleic Acid (DNA) Damage Response. J Med Chem 2018; 61:3436-3453. [PMID: 29618208 DOI: 10.1021/acs.jmedchem.7b01615] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Telomeric G-quadruplex targeting and telomere maintenance interference are emerging as attractive strategies for anticancer therapies. Here, a novel molecular scaffold is explored for telomeric G-quadruplex targeting. A series of novel schizocommunin derivatives was designed and synthesized as potential telomeric G-quadruplex ligands. The interaction of telomeric G-quadruplex DNA with the derivatives was explored by biophysical assay. The cytotoxicity of the derivatives toward cancer cell lines was evaluated by the methyl thiazolyl tetrazolium (MTT) assay. Among the derivatives, compound 16 showed great stabilization ability toward telomeric G-quadruplex DNA and good cytotoxicity toward cancer cell lines. Further cellular experiments indicated that 16 could induce the formation of telomeric G-quadruplex in cells, triggering a DNA damage response at the telomere and causing telomere dysfunction. These effects ultimately provoked p53-mediated cell cycle arrest and apoptosis, and suppressed tumor growth in a mouse xenograft model. Our work provides a novel scaffold for the development of telomeric G-quadruplex ligands.
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Affiliation(s)
- Tong Che
- Guangdong Provincial Key Laboratory of New Drug Design and Evaluation, School of Pharmaceutical Sciences , Sun Yat-sen University , Guangzhou 510006 , People's Republic of China
| | - Shuo-Bin Chen
- Guangdong Provincial Key Laboratory of New Drug Design and Evaluation, School of Pharmaceutical Sciences , Sun Yat-sen University , Guangzhou 510006 , People's Republic of China
| | - Jia-Li Tu
- Guangdong Provincial Key Laboratory of New Drug Design and Evaluation, School of Pharmaceutical Sciences , Sun Yat-sen University , Guangzhou 510006 , People's Republic of China
| | - Bo Wang
- Guangdong Provincial Key Laboratory of New Drug Design and Evaluation, School of Pharmaceutical Sciences , Sun Yat-sen University , Guangzhou 510006 , People's Republic of China
| | - Yu-Qing Wang
- Guangdong Provincial Key Laboratory of New Drug Design and Evaluation, School of Pharmaceutical Sciences , Sun Yat-sen University , Guangzhou 510006 , People's Republic of China
| | - Yan Zhang
- Guangdong Provincial Key Laboratory of New Drug Design and Evaluation, School of Pharmaceutical Sciences , Sun Yat-sen University , Guangzhou 510006 , People's Republic of China
| | - Jing Wang
- Guangdong Provincial Key Laboratory of New Drug Design and Evaluation, School of Pharmaceutical Sciences , Sun Yat-sen University , Guangzhou 510006 , People's Republic of China
| | - Zeng-Qing Wang
- Guangdong Provincial Key Laboratory of New Drug Design and Evaluation, School of Pharmaceutical Sciences , Sun Yat-sen University , Guangzhou 510006 , People's Republic of China
| | - Ze-Peng Zhang
- School of Life Sciences , Sun Yat-sen University , Guangzhou 510006 , People's Republic of China
| | - Tian-Miao Ou
- Guangdong Provincial Key Laboratory of New Drug Design and Evaluation, School of Pharmaceutical Sciences , Sun Yat-sen University , Guangzhou 510006 , People's Republic of China
| | - Yong Zhao
- School of Life Sciences , Sun Yat-sen University , Guangzhou 510006 , People's Republic of China
| | - Jia-Heng Tan
- Guangdong Provincial Key Laboratory of New Drug Design and Evaluation, School of Pharmaceutical Sciences , Sun Yat-sen University , Guangzhou 510006 , People's Republic of China
| | - Zhi-Shu Huang
- Guangdong Provincial Key Laboratory of New Drug Design and Evaluation, School of Pharmaceutical Sciences , Sun Yat-sen University , Guangzhou 510006 , People's Republic of China
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18
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Zhou G, Liu X, Li Y, Xu S, Ma C, Wu X, Cheng Y, Yu Z, Zhao G, Chen Y. Telomere targeting with a novel G-quadruplex-interactive ligand BRACO-19 induces T-loop disassembly and telomerase displacement in human glioblastoma cells. Oncotarget 2017; 7:14925-39. [PMID: 26908447 PMCID: PMC4924762 DOI: 10.18632/oncotarget.7483] [Citation(s) in RCA: 62] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2015] [Accepted: 01/29/2016] [Indexed: 12/12/2022] Open
Abstract
Interference with telomerase and telomere maintenance is emerging as an attractive target for anticancer therapies. Ligand-induced stabilization of G-quadruplex formation by the telomeric DNA 3'-overhang inhibits telomerase from catalyzing telomeric DNA synthesis and from capping telomeric ends, making these ligands good candidates for chemotherapeutic purposes. BRACO-19 is one of the most effective and specific ligand for telomeric G4. It is shown here that BRACO-19 suppresses proliferation and reduces telomerase activity in human glioblastoma cells, paralleled by the displacement of telomerase from nuclear to cytoplasm. Meanwhile, BRACO-19 triggers extensive DNA damage response at telomere, which may result from uncapping and disassembly of telomeric T-loop structure, characterized by the formation of anaphase bridge and telomere fusion, as well as the release of telomere-binding protein from telomere. The resulting dysfunctional telomere ultimately provokes p53 and p21-mediated cell cycle arrest, apoptosis and senescence. Notably, normal primary astrocytes do not respond to the treatment of BRACO-19, suggesting the agent's good selectivity for cancer cells. These results reinforce the notion that G-quadruplex binding compounds can act as broad inhibitors of telomere-related processes and have potential as selective antineoplastic drugs for various tumors including malignant gliomas.
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Affiliation(s)
- Guangtong Zhou
- Department of Neurosurgery, First Hospital of Jilin University, Changchun, China
| | - Xinrui Liu
- Department of Neurosurgery, First Hospital of Jilin University, Changchun, China
| | - Yunqian Li
- Department of Neurosurgery, First Hospital of Jilin University, Changchun, China
| | - Songbai Xu
- Department of Neurosurgery, First Hospital of Jilin University, Changchun, China
| | - Chengyuan Ma
- Department of Neurosurgery, First Hospital of Jilin University, Changchun, China
| | - Xinmin Wu
- Department of Neurosurgery, First Hospital of Jilin University, Changchun, China
| | - Ye Cheng
- Department of Neurosurgery, First Hospital of Jilin University, Changchun, China
| | - Zhiyun Yu
- Department of Neurosurgery, First Hospital of Jilin University, Changchun, China
| | - Gang Zhao
- Department of Neurosurgery, First Hospital of Jilin University, Changchun, China
| | - Yong Chen
- Department of Neurosurgery, First Hospital of Jilin University, Changchun, China
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19
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Qin H, Zhao C, Sun Y, Ren J, Qu X. Metallo-supramolecular Complexes Enantioselectively Eradicate Cancer Stem Cells in Vivo. J Am Chem Soc 2017; 139:16201-16209. [DOI: 10.1021/jacs.7b07490] [Citation(s) in RCA: 51] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Hongshuang Qin
- Laboratory
of Chemical Biology and State Key Laboratory of Rare Earth Resource
Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, China
| | - Chuanqi Zhao
- Laboratory
of Chemical Biology and State Key Laboratory of Rare Earth Resource
Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, China
| | - Yuhuan Sun
- Laboratory
of Chemical Biology and State Key Laboratory of Rare Earth Resource
Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, China
- University of Chinese Academy of Sciences, Beijing 100039, China
| | - Jinsong Ren
- Laboratory
of Chemical Biology and State Key Laboratory of Rare Earth Resource
Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, China
| | - Xiaogang Qu
- Laboratory
of Chemical Biology and State Key Laboratory of Rare Earth Resource
Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, China
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20
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Xi SF, Bao LY, Xu ZL, Wang YX, Ding ZD, Gu ZG. Enhanced Stabilization of G-Quadruplex DNA by [Ni4
L6
]8+
Cages with Large Rigid Aromatic Ligands. Eur J Inorg Chem 2017. [DOI: 10.1002/ejic.201700409] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
- Sai-Fei Xi
- The Key Laboratory of Synthetic and Biological Colloids; Ministry of Education; School of Chemical and Material Engineering; Jiangnan University; 214122 Wuxi China
| | - Ling-Yu Bao
- The Key Laboratory of Synthetic and Biological Colloids; Ministry of Education; School of Chemical and Material Engineering; Jiangnan University; 214122 Wuxi China
| | - Zong-Li Xu
- The Key Laboratory of Synthetic and Biological Colloids; Ministry of Education; School of Chemical and Material Engineering; Jiangnan University; 214122 Wuxi China
| | - Yu-Xia Wang
- The Key Laboratory of Synthetic and Biological Colloids; Ministry of Education; School of Chemical and Material Engineering; Jiangnan University; 214122 Wuxi China
| | - Zheng-Dong Ding
- The Key Laboratory of Synthetic and Biological Colloids; Ministry of Education; School of Chemical and Material Engineering; Jiangnan University; 214122 Wuxi China
| | - Zhi-Guo Gu
- The Key Laboratory of Synthetic and Biological Colloids; Ministry of Education; School of Chemical and Material Engineering; Jiangnan University; 214122 Wuxi China
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21
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Dolinnaya NG, Ogloblina AM, Yakubovskaya MG. Structure, Properties, and Biological Relevance of the DNA and RNA G-Quadruplexes: Overview 50 Years after Their Discovery. BIOCHEMISTRY (MOSCOW) 2017; 81:1602-1649. [PMID: 28260487 PMCID: PMC7087716 DOI: 10.1134/s0006297916130034] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
G-quadruplexes (G4s), which are known to have important roles in regulation of key biological processes in both normal and pathological cells, are the most actively studied non-canonical structures of nucleic acids. In this review, we summarize the results of studies published in recent years that change significantly scientific views on various aspects of our understanding of quadruplexes. Modern notions on the polymorphism of DNA quadruplexes, on factors affecting thermodynamics and kinetics of G4 folding–unfolding, on structural organization of multiquadruplex systems, and on conformational features of RNA G4s and hybrid DNA–RNA G4s are discussed. Here we report the data on location of G4 sequence motifs in the genomes of eukaryotes, bacteria, and viruses, characterize G4-specific small-molecule ligands and proteins, as well as the mechanisms of their interactions with quadruplexes. New information on the structure and stability of G4s in telomeric DNA and oncogene promoters is discussed as well as proof being provided on the occurrence of G-quadruplexes in cells. Prominence is given to novel experimental techniques (single molecule manipulations, optical and magnetic tweezers, original chemical approaches, G4 detection in situ, in-cell NMR spectroscopy) that facilitate breakthroughs in the investigation of the structure and functions of G-quadruplexes.
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Affiliation(s)
- N G Dolinnaya
- Lomonosov Moscow State University, Department of Chemistry, Moscow, 119991, Russia.
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22
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Wachter E, Moyá D, Glazer EC. Combining a Ru(II) "Building Block" and Rapid Screening Approach to Identify DNA Structure-Selective "Light Switch" Compounds. ACS COMBINATORIAL SCIENCE 2017; 19:85-95. [PMID: 28029775 DOI: 10.1021/acscombsci.6b00119] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
A chemically reactive Ru(II) "building block", able to undergo condensation reactions with substituted diamines, was utilized to create a small library of luminescent "light switch" dipyrido-[3,2-a:2',3'-c] phenazine (dppz) complexes. The impact of substituent identity, position, and the number of substituents on the light switch effect was investigated. An unbiased, parallel screening approach was used to evaluate the selectivity of the compounds for a variety of different biomolecules, including protein, nucleosides, single stranded DNA, duplex DNA, triplex DNA, and G-quadruplex DNA. Combining these two approaches allowed for the identification of hit molecules that showed different selectivities for biologically relevant DNA structures, particularly triplex and quadruplex DNA.
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Affiliation(s)
- Erin Wachter
- Department of Chemistry, University of Kentucky, 505 Rose Street, Lexingon, Kentucky 40506, United States
| | - Diego Moyá
- Department of Chemistry, University of Kentucky, 505 Rose Street, Lexingon, Kentucky 40506, United States
| | - Edith C. Glazer
- Department of Chemistry, University of Kentucky, 505 Rose Street, Lexingon, Kentucky 40506, United States
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23
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Hu Y, Lin F, Wu T, Zhou Y, Li Q, Shao Y, Xu Z. DNA Duplex Engineering for Enantioselective Fluorescent Sensor. Anal Chem 2017; 89:2181-2185. [DOI: 10.1021/acs.analchem.6b04709] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Yuehua Hu
- Institute of Physical Chemistry, Zhejiang Normal University, Jinhua 321004, Zhejiang, China
| | - Fan Lin
- Institute of Physical Chemistry, Zhejiang Normal University, Jinhua 321004, Zhejiang, China
| | - Tao Wu
- Institute of Physical Chemistry, Zhejiang Normal University, Jinhua 321004, Zhejiang, China
| | - Yufeng Zhou
- Institute of Physical Chemistry, Zhejiang Normal University, Jinhua 321004, Zhejiang, China
| | - Qiusha Li
- Institute of Physical Chemistry, Zhejiang Normal University, Jinhua 321004, Zhejiang, China
| | - Yong Shao
- Institute of Physical Chemistry, Zhejiang Normal University, Jinhua 321004, Zhejiang, China
| | - Zhiai Xu
- School
of Chemistry and Molecular Engineering, East China Normal University, Shanghai 200241, China
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24
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Biewer C, Hamacher C, Kaiser A, Vogt N, Sandleben A, Chin MT, Yu S, Vicic DA, Klein A. Unsymmetrical N-Aryl-1-(pyridin-2-yl)methanimine Ligands in Organonickel(II) Complexes: More Than a Blend of 2,2'-Bipyridine and N,N-Diaryl-α-diimines? Inorg Chem 2016; 55:12716-12727. [PMID: 27989202 DOI: 10.1021/acs.inorgchem.6b01874] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The new organonickel complexes [(R-PyMA)Ni(Mes)X] [R-PyMA = N-aryl-1-(pyridin-2-yl)methanimine; aryl = phenyl, 2,6-Me2-, 3,5-Me2-, 2,4,6-Me3-, 2,6-iPr2-, 3,5-(OMe)2-, 2-NO2-4-Me-, 4-NO2-, 2-CF3-, and 2-CF3-6-F-phenyl; Mes = 2,4,6-trimethylphenyl; X = F, Cl, Br, or I] were obtained as approximate 1/1 cis and trans isomeric mixtures or pure cis isomers depending on the PyMA ligand and X. The [(R-PyMA)Ni(Mes)X] complexes with X = Br or Cl were directly synthesized from the precursors trans-[(PPh3)2Ni(Mes)X], while [(PyMA)Ni(Mes)X] derivatives with X = F or I were obtained from [(PyMA)Ni(Mes)Br] through X exchange reactions. Although density functional theory (DFT) calculations show a preference for the sterically favored cis isomers, both isomers could be observed in many cases; in three cases, even single crystals for X-ray diffraction could be obtained for the trans isomers. Possible intermediates for the isomerization were investigated by DFT calculations. All complexes were studied by multiple spectroscopic means, electrochemistry, and spectroelectrochemistry (for the reduction processes). The long-wavelength metal-to-ligand charge-transfer (MLCT) absorptions vary markedly with the R substituent of the ligand and the cathodic electrochemical potentials to a far smaller degree. Both are almost invariable upon variation of X. All of this is in line with Ni-based and π*-based lowest unoccupied molecular orbitals (LUMOs). In line with the unsymmetric character of the NPy^Nmethanimine ligand, electrochemistry and MLCT transitions seem to not correspond to the same type of π* LUMO, making these PyMA ligands more interesting than the symmetric heteroaromatic polypyridine ligands such as 2,2'-bipyridine (bpy; NPy^NPy) and N,N-diaryl-substituted aliphatic α-diimines (Nmethanimine^Nmethanimine) such as the diaza-1,3-butadienes (DAB). First attempts to use these complexes in Negishi-type cross-coupling reactions were successful.
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Affiliation(s)
- Christian Biewer
- Department für Chemie, Institut für Anorganische Chemie, Universität zu Köln , Greinstraße 6, D-50939 Köln, Germany
| | - Claudia Hamacher
- Department für Chemie, Institut für Anorganische Chemie, Universität zu Köln , Greinstraße 6, D-50939 Köln, Germany
| | - Andre Kaiser
- Department für Chemie, Institut für Anorganische Chemie, Universität zu Köln , Greinstraße 6, D-50939 Köln, Germany
| | - Nicolas Vogt
- Department für Chemie, Institut für Anorganische Chemie, Universität zu Köln , Greinstraße 6, D-50939 Köln, Germany
| | - Aaron Sandleben
- Department für Chemie, Institut für Anorganische Chemie, Universität zu Köln , Greinstraße 6, D-50939 Köln, Germany
| | - Mason T Chin
- Department of Chemistry, Lehigh University , 6 East Packer Avenue, Bethlehem, Pennsylvania 18015, United States
| | - Siqi Yu
- Department of Chemistry, Lehigh University , 6 East Packer Avenue, Bethlehem, Pennsylvania 18015, United States
| | - David A Vicic
- Department of Chemistry, Lehigh University , 6 East Packer Avenue, Bethlehem, Pennsylvania 18015, United States
| | - Axel Klein
- Department für Chemie, Institut für Anorganische Chemie, Universität zu Köln , Greinstraße 6, D-50939 Köln, Germany
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25
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Zhang H, Li L, Wu Q, Yang F, Chen L, Hou T, Chen J, Mei W, Wang X. Inhibiting the growth of tumor cells by ruthenium(II) complexes [Ru(phen)2L] (L = o-TFMPIP and p-CPIP) through DNA-binding. J COORD CHEM 2016; 69:3507-3517. [DOI: 10.1080/00958972.2016.1237633] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2016] [Accepted: 08/23/2016] [Indexed: 11/11/2022]
Affiliation(s)
- Hao Zhang
- The First Affiliated Hospital of Guangdong Pharmaceutical University, Guangzhou, PR China
| | - Li Li
- School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou, PR China
| | - Qiong Wu
- School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou, PR China
| | - Fan Yang
- The First Affiliated Hospital of Guangdong Pharmaceutical University, Guangzhou, PR China
| | - Lanmei Chen
- College of Pharmacy, Guangdong Medical College, Zhanjiang, PR China
| | - Tieying Hou
- Guangdong Academy of Medical Science, Guangzhou, PR China
- Guangdong General Hospital, Guangzhou, PR China
| | - Jincan Chen
- College of Pharmacy, Guangdong Medical College, Zhanjiang, PR China
| | - Wenjie Mei
- School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou, PR China
| | - Xicheng Wang
- The First Affiliated Hospital of Guangdong Pharmaceutical University, Guangzhou, PR China
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26
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Zhao A, Zhao C, Ren J, Qu X. Enantioselective targeting left-handed Z-G-quadruplex. Chem Commun (Camb) 2016; 52:1365-8. [PMID: 26616287 DOI: 10.1039/c5cc08401f] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
Herein, we report the first example where an M-enantiomer of a chiral metal complex can selectively stabilize a left-handed G-quadruplex, but its P-enantiomer cannot. The interactions between the chiral metal complexes and the left-handed G-quadruplex were evaluated by UV melting, circular dichroism, isothermal titration calorimetry, gel electrophoresis and NMR titrations.
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Affiliation(s)
- Andong Zhao
- Laboratory of Chemical Biology and State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Graduate School of the Chinese Academy of Sciences, Changchun, Jilin 130022, China.
| | - Chuanqi Zhao
- Laboratory of Chemical Biology and State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Graduate School of the Chinese Academy of Sciences, Changchun, Jilin 130022, China.
| | - Jinsong Ren
- Laboratory of Chemical Biology and State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Graduate School of the Chinese Academy of Sciences, Changchun, Jilin 130022, China.
| | - Xiaogang Qu
- Laboratory of Chemical Biology and State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Graduate School of the Chinese Academy of Sciences, Changchun, Jilin 130022, China.
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27
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Zhao C, Sun Y, Ren J, Qu X. Recent progress in lanthanide complexes for DNA sensing and targeting specific DNA structures. Inorganica Chim Acta 2016. [DOI: 10.1016/j.ica.2016.04.014] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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28
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Fluorescence imaging of chromosomal DNA using click chemistry. Sci Rep 2016; 6:33217. [PMID: 27620982 PMCID: PMC5020420 DOI: 10.1038/srep33217] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2016] [Accepted: 08/23/2016] [Indexed: 11/08/2022] Open
Abstract
Chromosome visualization is essential for chromosome analysis and genetic diagnostics. Here, we developed a click chemistry approach for multicolor imaging of chromosomal DNA instead of the traditional dye method. We first demonstrated that the commercially available reagents allow for the multicolor staining of chromosomes. We then prepared two pro-fluorophore moieties that served as light-up reporters to stain chromosomal DNA based on click reaction and visualized the clear chromosomes in multicolor. We applied this strategy in fluorescence in situ hybridization (FISH) and identified, with high sensitivity and specificity, telomere DNA at the end of the chromosome. We further extended this approach to observe several basic stages of cell division. We found that the click reaction enables direct visualization of the chromosome behavior in cell division. These results suggest that the technique can be broadly used for imaging chromosomes and may serve as a new approach for chromosome analysis and genetic diagnostics.
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29
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Xiong YX, Su HF, Lv P, Ma Y, Wang SK, Miao H, Liu HY, Tan JH, Ou TM, Gu LQ, Huang ZS. A newly identified berberine derivative induces cancer cell senescence by stabilizing endogenous G-quadruplexes and sparking a DNA damage response at the telomere region. Oncotarget 2016; 6:35625-35. [PMID: 26462146 PMCID: PMC4742130 DOI: 10.18632/oncotarget.5521] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2015] [Accepted: 09/28/2015] [Indexed: 12/16/2022] Open
Abstract
The guanine-rich sequences are able to fold into G-quadruplexes in living cells, making these structures promising anti-cancer drug targets. In the current study, we identified a small molecule, Ber8, from a series of 9-substituted berberine derivatives and found that it could induce acute cell growth arrest and senescence in cancer cells, but not in normal fibroblasts. Further analysis revealed that the cell growth arrest was directly associated with apparent cell cycle arrest, cell senescence, and profound DNA damage at the telomere region. Significantly, our studies also provided evidence that Ber8 could stabilize endogenous telomeric G-quadruplexes structures in cells. Ber8 could then induce the delocalization of TRF1 and POT1 from the telomere accompanied by a rapid telomere uncapping. These results provide compelling insights into direct binding of telomeric G-quadruplexes and might contribute to the development of more selective, effective anticancer drugs.
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Affiliation(s)
- Yun-Xia Xiong
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, P.R.China
| | - Hua-Fei Su
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, P.R.China
| | - Peng Lv
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, P.R.China
| | - Yan Ma
- Department of Medical Science, Shunde Polytechnic, Foshan 528333, P.R.China
| | - Shi-Ke Wang
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, P.R.China
| | - Hui Miao
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, P.R.China
| | - Hui-Yun Liu
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, P.R.China
| | - Jia-Heng Tan
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, P.R.China
| | - Tian-Miao Ou
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, P.R.China
| | - Lian-Quan Gu
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, P.R.China
| | - Zhi-Shu Huang
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, P.R.China
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30
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Wu Q, Mei W, Zheng K, Ding Y. Self-assembly of c-myc DNA promoted by a single enantiomer ruthenium complex as a potential nuclear targeting gene carrier. Sci Rep 2016; 6:28582. [PMID: 27381008 PMCID: PMC4933878 DOI: 10.1038/srep28582] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2015] [Accepted: 06/07/2016] [Indexed: 12/26/2022] Open
Abstract
Gene therapy has long been limited in the clinic, due in part to the lack of safety and efficacy of the gene carrier. Herein, a single enantiomer ruthenium(II) complex, Λ-[Ru(bpy)2(p-BEPIP)](ClO4)2 (Λ-RM0627, bpy = 4,4'-bipyridine, p-BEPIP = 2-(4-phenylacetylenephenyl)imidazole [4,5f][1, 10] phenanthroline), has been synthesized and investigated as a potential gene carrier that targets the nucleus. In this report, it is shown that Λ-RM0627 promotes self-assembly of c-myc DNA to form a nanowire structure. Further studies showed that the nano-assembly of c-myc DNA that induced Λ-RM0627 could be efficiently taken up and enriched in the nuclei of HepG2 cells. After treatment of the nano-assembly of c-myc DNA with Λ-RM0627, over-expression of c-myc in HepG2 cells was observed. In summary, Λ-RM0627 played a key role in the transfer and release of c-myc into cells, which strongly indicates Λ-RM0627 as a potent carrier of c-myc DNA that targets the nucleus of tumor cells.
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Affiliation(s)
- Qiong Wu
- School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou 510006, China
| | - Wenjie Mei
- School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou 510006, China
| | - Kangdi Zheng
- Traditional Chinese Medicine College, Guangdong Pharmaceutical University, Guangzhou 510006, China
| | - Yang Ding
- School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou 510006, China
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31
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Saintomé C, Amrane S, Mergny JL, Alberti P. The exception that confirms the rule: a higher-order telomeric G-quadruplex structure more stable in sodium than in potassium. Nucleic Acids Res 2016; 44:2926-35. [PMID: 26762980 PMCID: PMC4824101 DOI: 10.1093/nar/gkw003] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2015] [Accepted: 12/31/2015] [Indexed: 11/14/2022] Open
Abstract
DNA and RNA guanine-quadruplexes (G4s) are stabilized by several cations, in particular by potassium and sodium ions. Generally, potassium stabilizes guanine-quartet assemblies to a larger extent than sodium; in this article we report about a higher-order G4 structure more stable in sodium than in potassium. Repeats of the DNA GGGTTA telomeric motif fold into contiguous G4 units. Using three independent approaches (thermal denaturation experiments, isothermal molecular-beacon and protein-binding assays), we show that the (GGGTTA)7GGG sequence, folding into two contiguous G4 units, exhibits an unusual feature among G4 motifs: despite a lower thermal stability, its sodium conformation is more stable than its potassium counterpart at physiological temperature. Using differential scanning calorimetry and mutated sequences, we show that this switch in the relative stability of the sodium and potassium conformations (occurring around 45°C in 100 mM cation concentration) is the result of a more favorable enthalpy change upon folding in sodium, generated by stabilizing interactions between the two G4 units in the sodium conformation. Our work demonstrates that interactions between G4 structural domains can make a higher-order structure more stable in sodium than in potassium, even though its G4 structural domains are individually more stable in potassium than in sodium.
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Affiliation(s)
- Carole Saintomé
- Structure et Instabilité des Génomes, Sorbonne Universités, Muséum national d'Histoire naturelle, Inserm U 1154, CNRS UMR 7196, Paris, France UPMC (Université Pierre et Marie Curie) Université Paris 6, UFR 927, Paris, France
| | - Samir Amrane
- Université de Bordeaux, ARNA Laboratory, Bordeaux, France IECB (Institut Européen de Chimie et Biologie), Inserm U 869, Pessac, France
| | - Jean-Louis Mergny
- Université de Bordeaux, ARNA Laboratory, Bordeaux, France IECB (Institut Européen de Chimie et Biologie), Inserm U 869, Pessac, France
| | - Patrizia Alberti
- Structure et Instabilité des Génomes, Sorbonne Universités, Muséum national d'Histoire naturelle, Inserm U 1154, CNRS UMR 7196, Paris, France
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32
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Wachter E, Moyá D, Parkin S, Glazer EC. Ruthenium Complex "Light Switches" that are Selective for Different G-Quadruplex Structures. Chemistry 2016; 22:550-9. [PMID: 26560887 PMCID: PMC4703525 DOI: 10.1002/chem.201503203] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2015] [Indexed: 01/03/2023]
Abstract
Recognition and regulation of G-quadruplex nucleic acid structures is an important goal for the development of chemical tools and medicinal agents. The addition of a bromo-substituent to the dipyridylphenazine (dppz) ligands in the photophysical "light switch", [Ru(bpy)2 dppz](2+) , and the photochemical "light switch", [Ru(bpy)2 dmdppz](2+) , creates compounds with increased selectivity for an intermolecular parallel G-quadruplex and the mixed-hybrid G-quadruplex, respectively. When [Ru(bpy)2 dppz-Br](2+) and [Ru(bpy)2 dmdppz-Br](2+) are incubated with the G-quadruplexes, they have a stabilizing effect on the DNA structures. Activation of [Ru(bpy)2 dmdppz-Br](2+) with light results in covalent adduct formation with the DNA. These complexes demonstrate that subtle chemical modifications of Ru(II) complexes can alter G-quadruplex selectivity, and could be useful for the rational design of in vivo G-quadruplex probes.
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Affiliation(s)
- Erin Wachter
- Department of Chemistry, University of Kentucky, 505 Rose Street, Lexington, KY 40506 (USA)
| | - Diego Moyá
- Department of Chemistry, University of Kentucky, 505 Rose Street, Lexington, KY 40506 (USA)
| | - Sean Parkin
- Department of Chemistry, University of Kentucky, 505 Rose Street, Lexington, KY 40506 (USA)
| | - Edith C Glazer
- Department of Chemistry, University of Kentucky, 505 Rose Street, Lexington, KY 40506 (USA).
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33
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Xi SF, Bao LY, Lin JG, Liu QZ, Qiu L, Zhang FL, Wang YX, Ding ZD, Li K, Gu ZG. Enantiomers of tetrahedral metal–organic cages: a new class of highly efficient G-quadruplex ligands with potential anticancer activities. Chem Commun (Camb) 2016; 52:10261-4. [DOI: 10.1039/c6cc05743h] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
A new class of chiral tetrahedral cages efficiently stabilized antiparallel G-quadruplex DNA with moderate enantioselectivity and displayed promising cytotoxicity against several cancer cell lines.
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34
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Zheng XH, Mu G, Zhong YF, Zhang TP, Cao Q, Ji LN, Zhao Y, Mao ZW. Trigeminal star-like platinum complexes induce cancer cell senescence through quadruplex-mediated telomere dysfunction. Chem Commun (Camb) 2016; 52:14101-14104. [DOI: 10.1039/c6cc08254h] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Trigeminal star-like platinum complexes induce cancer cell senescence through quadruplex-mediated telomeric DNA damage and telomere end-loss.
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Affiliation(s)
- Xiao-Hui Zheng
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry
- School of Chemistry
- Sun Yat-Sen University
- Guangzhou 510275
- China
| | - Ge Mu
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry
- School of Chemistry
- Sun Yat-Sen University
- Guangzhou 510275
- China
| | - Yi-Fang Zhong
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry
- School of Chemistry
- Sun Yat-Sen University
- Guangzhou 510275
- China
| | - Tian-Peng Zhang
- School of Life Sciences
- SunYat-Sen University
- Guangzhou 510006
- China
| | - Qian Cao
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry
- School of Chemistry
- Sun Yat-Sen University
- Guangzhou 510275
- China
| | - Liang-Nian Ji
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry
- School of Chemistry
- Sun Yat-Sen University
- Guangzhou 510275
- China
| | - Yong Zhao
- School of Life Sciences
- SunYat-Sen University
- Guangzhou 510006
- China
| | - Zong-Wan Mao
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry
- School of Chemistry
- Sun Yat-Sen University
- Guangzhou 510275
- China
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35
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Chen ZF, Qin QP, Qin JL, Zhou J, Li YL, Li N, Liu YC, Liang H. Water-Soluble Ruthenium(II) Complexes with Chiral 4-(2,3-Dihydroxypropyl)-formamide Oxoaporphine (FOA): In Vitro and in Vivo Anticancer Activity by Stabilization of G-Quadruplex DNA, Inhibition of Telomerase Activity, and Induction of Tumor Cell Apoptosis. J Med Chem 2015; 58:4771-89. [PMID: 25988535 DOI: 10.1021/acs.jmedchem.5b00444] [Citation(s) in RCA: 100] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Three water-soluble ruthenium(II) complexes with chiral 4-(2,3-dihydroxypropyl)-formamide oxoaporphine (FOA) were synthesized and characterized. It was found that these ruthenium(II) complexes exhibited considerable in vitro anticancer activities and that they were the effective stabilizers of telomeric and G-quadruplex-DNA (G4-DNA) in promoter of c-myc, which acted as a telomerase inhibitor targeting G4-DNA and induced cell senescence and apoptosis. Interestingly, the in vitro anticancer activity of 6 (LC-003) was higher than those of 4 (LC-001) and 5 (LC-002), more selective for BEL-7404 cells than for normal HL-7702 cells, and preferred to activate caspases-3/9. The different biological behaviors of the ruthenium complexes could be correlated with the chiral nature of 4-(2,3-dihydroxypropyl)-formamide oxoaporphine. More significantly, 6 exhibited effective inhibitory on tumor growth in BEL-7402 xenograft mouse model and higher in vivo safety than cisplatin. These mechanistic insights indicate that 6 displays low toxicity and can be a novel anticancer drug candidate.
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Affiliation(s)
- Zhen-Feng Chen
- State Key Laboratory Cultivation Base for the Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmacy, Guangxi Normal University, 15 Yucai Road, Guilin 541004, P. R. China
| | - Qi-Pin Qin
- State Key Laboratory Cultivation Base for the Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmacy, Guangxi Normal University, 15 Yucai Road, Guilin 541004, P. R. China
| | - Jiao-Lan Qin
- State Key Laboratory Cultivation Base for the Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmacy, Guangxi Normal University, 15 Yucai Road, Guilin 541004, P. R. China
| | - Jie Zhou
- State Key Laboratory Cultivation Base for the Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmacy, Guangxi Normal University, 15 Yucai Road, Guilin 541004, P. R. China
| | - Yu-Lan Li
- State Key Laboratory Cultivation Base for the Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmacy, Guangxi Normal University, 15 Yucai Road, Guilin 541004, P. R. China
| | - Nan Li
- State Key Laboratory Cultivation Base for the Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmacy, Guangxi Normal University, 15 Yucai Road, Guilin 541004, P. R. China
| | - Yan-Cheng Liu
- State Key Laboratory Cultivation Base for the Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmacy, Guangxi Normal University, 15 Yucai Road, Guilin 541004, P. R. China
| | - Hong Liang
- State Key Laboratory Cultivation Base for the Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmacy, Guangxi Normal University, 15 Yucai Road, Guilin 541004, P. R. China
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36
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Brito H, Martins AC, Lavrado J, Mendes E, Francisco AP, Santos SA, Ohnmacht SA, Kim NS, Rodrigues CMP, Moreira R, Neidle S, Borralho PM, Paulo A. Targeting KRAS Oncogene in Colon Cancer Cells with 7-Carboxylate Indolo[3,2-b]quinoline Tri-Alkylamine Derivatives. PLoS One 2015; 10:e0126891. [PMID: 26024321 PMCID: PMC4449006 DOI: 10.1371/journal.pone.0126891] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2015] [Accepted: 04/08/2015] [Indexed: 12/31/2022] Open
Abstract
BACKGROUND A guanine-rich strand within the promoter of the KRAS gene can fold into an intra-molecular G-quadruplex structure (G4), which has an important role in the regulation of KRAS transcription. We have previously identified indolo[3,2-b]quinolines with a 7-carboxylate group and three alkylamine side chains (IQ3A) as effective G4 stabilizers and promising selective anticancer leads. Herein we investigated the anticancer mechanism of action of these compounds, which we hypothesized due to stabilization of the G4 sequence in the KRAS promoter and subsequent down-regulation of gene expression. METHODOLOGY/PRINCIPAL FINDINGS IQ3A compounds showed greater stabilization of G4 compared to duplex DNA structures and reduced KRAS promoter activity in a dual luciferase reporter assay. Moreover, IQ3A compounds showed high anti-proliferative activity in HCT116 and SW620 colon cancer cells (IC50 < 2.69 μM), without eliciting cell death in non-malignant HEK293T human embryonic kidney, and human colon fibroblasts CCD18co. IQ3A compounds significantly reduced KRAS mRNA and protein steady-state levels at IC50 concentrations, and increased p53 protein steady-state levels and cell death by apoptosis in HCT116 cells (mut KRAS, wt p53). Furthermore, KRAS silencing in HCT116 p53 wild-type (p53(+/+)) and null (p53(-/-)) isogenic cell lines induced a higher level of cell death, and a higher IQ3A-induced cell death in HCT116 p53(+/+) compared to HCT116 p53(-/-). CONCLUSIONS Herein we provide evidence that G4 ligands such as IQ3A compounds can target G4 motifs present in KRAS promoter, down-regulate the expression of the mutant KRAS gene through inhibition of transcription and translation, and induce cell death by apoptosis in colon cancer cell lines. Thus, targeting KRAS at the genomic level with G4 ligands may be a new anticancer therapy strategy for colon cancer.
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Affiliation(s)
- Hugo Brito
- Cell Function and Therapeutic Targeting Group, Research Institute for Medicines (iMed.ULisboa), Faculty of Pharmacy, Universidade de Lisboa, Av. Prof. Gama Pinto, 1649-003 Lisbon, Portugal
| | - Ana Cláudia Martins
- Medicinal Chemistry Group, Research Institute for Medicines (iMed.ULisboa), Faculty of Pharmacy, Universidade de Lisboa, Av. Prof. Gama Pinto, 1649-003 Lisbon, Portugal
| | - João Lavrado
- Medicinal Chemistry Group, Research Institute for Medicines (iMed.ULisboa), Faculty of Pharmacy, Universidade de Lisboa, Av. Prof. Gama Pinto, 1649-003 Lisbon, Portugal
| | - Eduarda Mendes
- Faculty of Pharmacy, Universidade de Lisboa, Av. Prof. Gama Pinto, 1649-003 Lisbon, Portugal
| | - Ana Paula Francisco
- Faculty of Pharmacy, Universidade de Lisboa, Av. Prof. Gama Pinto, 1649-003 Lisbon, Portugal
| | - Sofia A. Santos
- Medicinal Chemistry Group, Research Institute for Medicines (iMed.ULisboa), Faculty of Pharmacy, Universidade de Lisboa, Av. Prof. Gama Pinto, 1649-003 Lisbon, Portugal
- Center for Systems Biology, Massachusetts General Hospital, Boston, MA 02114, United States of America
| | - Stephan A. Ohnmacht
- UCL School of Pharmacy, University College London, 29/39 Brunswick Square, London WC1N 1AX, United Kingdom
| | - Nam-Soon Kim
- Medical Genomics Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, 305-333, Republic of Korea
| | - Cecília M. P. Rodrigues
- Cell Function and Therapeutic Targeting Group, Research Institute for Medicines (iMed.ULisboa), Faculty of Pharmacy, Universidade de Lisboa, Av. Prof. Gama Pinto, 1649-003 Lisbon, Portugal
| | - Rui Moreira
- Medicinal Chemistry Group, Research Institute for Medicines (iMed.ULisboa), Faculty of Pharmacy, Universidade de Lisboa, Av. Prof. Gama Pinto, 1649-003 Lisbon, Portugal
| | - Stephen Neidle
- UCL School of Pharmacy, University College London, 29/39 Brunswick Square, London WC1N 1AX, United Kingdom
| | - Pedro M. Borralho
- Cell Function and Therapeutic Targeting Group, Research Institute for Medicines (iMed.ULisboa), Faculty of Pharmacy, Universidade de Lisboa, Av. Prof. Gama Pinto, 1649-003 Lisbon, Portugal
- * E-mail: (PMB); (AP)
| | - Alexandra Paulo
- Medicinal Chemistry Group, Research Institute for Medicines (iMed.ULisboa), Faculty of Pharmacy, Universidade de Lisboa, Av. Prof. Gama Pinto, 1649-003 Lisbon, Portugal
- * E-mail: (PMB); (AP)
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37
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McNeill SM, Preston D, Lewis JEM, Robert A, Knerr-Rupp K, Graham DO, Wright JR, Giles GI, Crowley JD. Biologically active [Pd2L4](4+) quadruply-stranded helicates: stability and cytotoxicity. Dalton Trans 2015; 44:11129-36. [PMID: 25997516 DOI: 10.1039/c5dt01259g] [Citation(s) in RCA: 71] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
There is emerging interest in the anti-proliferative effects of metallosupramolecular systems due to the different size and shape of these metallo-architectures compared to traditional small molecule drugs. Palladium(II)-containing systems are the most abundant class of metallosupramolecular complexes, yet their biological activity has hardly been examined. Here a small series of [Pd2(L)4](BF4)4 quadruply-stranded, dipalladium(II) architectures were screened for their cytotoxic effects against three cancer cell lines and one non-malignant line. The helicates exhibited a range of cytotoxic properties, with the most cytotoxic complex [Pd2(hextrz)4](BF4)4 possessing low micromolar IC50 values against all of the cell lines tested, while the other helicates displayed moderate or no cytotoxicity. Against the MDA-MB-231 cell line, which is resistant to platinum-based drugs, [Pd2(hextrz)4](BF4)4 was 7-fold more active than cisplatin. Preliminary mechanistic studies indicate that the [Pd2(hextrz)4](BF4)4 helicate does not induce cell death in the same way as clinically used metal complexes such as cisplatin. Rather than interacting with DNA, the helicate appears to disrupt the cell membrane. These studies represent the first biological characterisation of quadruply-stranded helicate architectures, and provide insight into the design requirements for the development of biologically active and stable palladium(II)-containing metallosupramolecular architectures.
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Affiliation(s)
- Samantha M McNeill
- Department of Pharmacology and Toxicology, University of Otago, P.O. Box 913, Dunedin, New Zealand.
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38
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Trajkovski M, Morel E, Hamon F, Bombard S, Teulade-Fichou MP, Plavec J. Interactions of Pt-ttpy with G-Quadruplexes Originating from Promoter Region of the c-myc Gene Deciphered by NMR and Gel Electrophoresis Analysis. Chemistry 2015; 21:7798-807. [DOI: 10.1002/chem.201500347] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2015] [Indexed: 12/20/2022]
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39
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Synthesis, structure, stability and antimicrobial activity of a ruthenium(II) helicate derived from a bis-bidentate “click” pyridyl-1,2,3-triazole ligand. Inorganica Chim Acta 2015. [DOI: 10.1016/j.ica.2014.10.011] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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40
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41
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Xu B, Zhao C, Chen Y, Tateishi-Karimata H, Ren J, Sugimoto N, Qu X. Methyl Substitution Regulates the Enantioselectivity of Supramolecular Complex Binding to Human Telomeric G-Quadruplex DNA. Chemistry 2014; 20:16467-72. [DOI: 10.1002/chem.201404854] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2014] [Indexed: 01/23/2023]
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42
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Majouga AG, Zvereva MI, Rubtsova MP, Skvortsov DA, Mironov AV, Azhibek DM, Krasnovskaya OO, Gerasimov VM, Udina AV, Vorozhtsov NI, Beloglazkina EK, Agron L, Mikhina LV, Tretyakova AV, Zyk NV, Zefirov NS, Kabanov AV, Dontsova OA. Mixed Valence Copper(I,II) Binuclear Complexes with Unexpected Structure: Synthesis, Biological Properties and Anticancer Activity. J Med Chem 2014; 57:6252-8. [DOI: 10.1021/jm500154f] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Alexander G. Majouga
- Department
of Chemistry, Lomonosov Moscow State University, Leninskie Gory, 1/3, 119991 Moscow, Russian Federation
- National University of Science and Technology MISiS, Leninsky Ave, 4, 119049 Moscow, Russian Federation
| | - Maria I. Zvereva
- Department
of Chemistry, Lomonosov Moscow State University, Leninskie Gory, 1/3, 119991 Moscow, Russian Federation
- Belozersky
Institute, Lomonosov Moscow State University, Leninskie Gory, 1/40, 119992 Moscow, Russian Federation
| | - Maria P. Rubtsova
- Department
of Chemistry, Lomonosov Moscow State University, Leninskie Gory, 1/3, 119991 Moscow, Russian Federation
- Belozersky
Institute, Lomonosov Moscow State University, Leninskie Gory, 1/40, 119992 Moscow, Russian Federation
| | - Dmitry A. Skvortsov
- Department
of Chemistry, Lomonosov Moscow State University, Leninskie Gory, 1/3, 119991 Moscow, Russian Federation
| | - Andrei V. Mironov
- Department
of Chemistry, Lomonosov Moscow State University, Leninskie Gory, 1/3, 119991 Moscow, Russian Federation
| | - Dulat M. Azhibek
- Department
of Chemistry, Lomonosov Moscow State University, Leninskie Gory, 1/3, 119991 Moscow, Russian Federation
- Skolkovo Institute of Science and Technology, Ul. Novaya, d. 100, Skolkovo 143025, Russian Federation
| | - Olga O. Krasnovskaya
- Department
of Chemistry, Lomonosov Moscow State University, Leninskie Gory, 1/3, 119991 Moscow, Russian Federation
| | - Vasily M. Gerasimov
- Department
of Chemistry, Lomonosov Moscow State University, Leninskie Gory, 1/3, 119991 Moscow, Russian Federation
| | - Anna V. Udina
- Department
of Chemistry, Lomonosov Moscow State University, Leninskie Gory, 1/3, 119991 Moscow, Russian Federation
| | - Nikolay I. Vorozhtsov
- Department
of Chemistry, Lomonosov Moscow State University, Leninskie Gory, 1/3, 119991 Moscow, Russian Federation
| | - Elena K. Beloglazkina
- Department
of Chemistry, Lomonosov Moscow State University, Leninskie Gory, 1/3, 119991 Moscow, Russian Federation
| | - Leonid Agron
- Department
of Chemistry, Lomonosov Moscow State University, Leninskie Gory, 1/3, 119991 Moscow, Russian Federation
| | - Larisa V. Mikhina
- Federal
State-Financed Institution “Research Center for Toxicology
and Hygienic Regulation of Biopreparations”, Federal Medico-Biological Agency, 102A, Lenin Str., Serpukhov, Moscow Region142253, Russian Federation
| | - Alla V. Tretyakova
- Federal
State-Financed Institution “Research Center for Toxicology
and Hygienic Regulation of Biopreparations”, Federal Medico-Biological Agency, 102A, Lenin Str., Serpukhov, Moscow Region142253, Russian Federation
| | - Nikolay V. Zyk
- Department
of Chemistry, Lomonosov Moscow State University, Leninskie Gory, 1/3, 119991 Moscow, Russian Federation
| | - Nikolay S. Zefirov
- Department
of Chemistry, Lomonosov Moscow State University, Leninskie Gory, 1/3, 119991 Moscow, Russian Federation
| | - Alexander V. Kabanov
- Department
of Chemistry, Lomonosov Moscow State University, Leninskie Gory, 1/3, 119991 Moscow, Russian Federation
- Center
for Nanotechnology in Drug Delivery and Division of Molecular Pharmaceutics,
Eshelman School of PharmacyUniversity of North Carolina at Chapel Hill, , Genetic Medicine Building, room 1094, Campus Box 7362, Chapel Hill, North Carolina 27599-7362, United States
| | - Olga A. Dontsova
- Department
of Chemistry, Lomonosov Moscow State University, Leninskie Gory, 1/3, 119991 Moscow, Russian Federation
- Belozersky
Institute, Lomonosov Moscow State University, Leninskie Gory, 1/40, 119992 Moscow, Russian Federation
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Savić A, Misirlić-Denčić S, Dulović M, Mihajlović-Lalić LE, Jovanović M, Grgurić-Šipka S, Marković I, Sabo TJ. Synthesis, characterization and ROS-mediated cytotoxic action of novel (S,S)-1,3-propanediamine-N,N′-di-2-(3-cyclohexyl)propanoic acid and corresponding esters. Bioorg Chem 2014; 54:73-80. [DOI: 10.1016/j.bioorg.2014.04.006] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2014] [Revised: 04/15/2014] [Accepted: 04/20/2014] [Indexed: 01/01/2023]
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Franceschin M, Nocioni D, Biroccio A, Micheli E, Cacchione S, Cingolani C, Venditti A, Zizza P, Bianco A, Altieri A. Design and synthesis of a new dimeric xanthone derivative: enhancement of G-quadruplex selectivity and telomere damage. Org Biomol Chem 2014; 12:9572-82. [DOI: 10.1039/c4ob01658k] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Dimerization of the xanthone core greatly enhances G-quadruplex binding and biological activity.
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Affiliation(s)
- Marco Franceschin
- University of Rome “Sapienza”
- Department of Chemistry
- Roma 00185, Italy
| | - Daniele Nocioni
- University of Rome “Sapienza”
- Department of Chemistry
- Roma 00185, Italy
| | - Annamaria Biroccio
- Experimental Chemotherapy Laboratory
- Regina Elena National Cancer Institute
- Italy
| | - Emanuela Micheli
- University of Rome “Sapienza”
- Department of Biology and Biotechnology “Charles Darwin”
- Roma 00185, Italy
- Istituto Pasteur-Fondazione Cenci-Bolognetti
- Roma 00185, Italy
| | - Stefano Cacchione
- University of Rome “Sapienza”
- Department of Biology and Biotechnology “Charles Darwin”
- Roma 00185, Italy
- Istituto Pasteur-Fondazione Cenci-Bolognetti
- Roma 00185, Italy
| | - Chiara Cingolani
- Experimental Chemotherapy Laboratory
- Regina Elena National Cancer Institute
- Italy
| | | | - Pasquale Zizza
- Experimental Chemotherapy Laboratory
- Regina Elena National Cancer Institute
- Italy
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