51
|
Sun D, Liu Y, Liu D, Zhang R, Yang X, Liu J. Stabilization of G-Quadruplex DNA, Inhibition of Telomerase Activity and Live Cell Imaging Studies of Chiral Ruthenium(II) Complexes. Chemistry 2012; 18:4285-95. [DOI: 10.1002/chem.201103156] [Citation(s) in RCA: 102] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2011] [Indexed: 11/11/2022]
|
52
|
Nicoludis JM, Barrett SP, Mergny JL, Yatsunyk LA. Interaction of human telomeric DNA with N-methyl mesoporphyrin IX. Nucleic Acids Res 2012; 40:5432-47. [PMID: 22362740 PMCID: PMC3384297 DOI: 10.1093/nar/gks152] [Citation(s) in RCA: 163] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
The remarkable selectivity of N-methyl mesoporphyrin IX (NMM) for G-quadruplexes (GQs) is long known, however its ability to stabilize and bind GQs has not been investigated in detail. Through the use of circular dichroism, UV-visible spectroscopy and fluorescence resonance energy transfer (FRET) melting assay we have shown that NMM stabilizes human telomeric DNA dAG3(TTAG3)3 (Tel22) and is selective for its parallel conformation to which it binds in 1:1 stoichiometry with a binding constant of ∼1.0 × 105 M−1. NMM does not interact with an antiparallel conformation of Tel22 in sodium buffer and is the second example in the literature, after TOxaPy, of a ligand with an excellent selectivity for a specific GQ structure. NMM's stabilizing ability toward predominantly parallel GQ conformation is universal: it stabilizes a variety of biologically relevant G-rich sequences including telomeres and oncogene promoters. The N-methyl group is integral for selectivity and stabilization, as the unmethylated analogue, mesoporphyrin IX, does not stabilize GQ DNA in FRET melting assays. Finally, NMM induces the isomerization of Tel22 into a structure with increased parallel component in K+ but not in Na+ buffer. The ability of NMM to cause structural rearrangement and efficient stabilization of Tel22 may bear biological significance.
Collapse
Affiliation(s)
- John M Nicoludis
- Department of Chemistry and Biochemistry, Swarthmore College, 500 College Avenue, Swarthmore, PA 19081, USA
| | | | | | | |
Collapse
|
53
|
Visualizing the Quadruplex: From Fluorescent Ligands to Light-Up Probes. Top Curr Chem (Cham) 2012; 330:111-77. [DOI: 10.1007/128_2012_346] [Citation(s) in RCA: 106] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
|
54
|
Sun D, Zhang R, Yuan F, Liu D, Zhou Y, Liu J. Studies on characterization, telomerase inhibitory properties and G-quadruplex binding of η6-arene ruthenium complexes with 1,10-phenanthroline-derived ligands. Dalton Trans 2012; 41:1734-41. [DOI: 10.1039/c1dt11676b] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
|
55
|
Yaku H, Fujimoto T, Murashima T, Miyoshi D, Sugimoto N. Phthalocyanines: a new class of G-quadruplex-ligands with many potential applications. Chem Commun (Camb) 2012; 48:6203-16. [DOI: 10.1039/c2cc31037f] [Citation(s) in RCA: 97] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
|
56
|
Manet I, Manoli F, Donzello MP, Ercolani C, Vittori D, Cellai L, Masi A, Monti S. Tetra-2,3-pyrazinoporphyrazines with Externally Appended Pyridine Rings. 10. A Water-Soluble Bimetallic (ZnII/PtII) Porphyrazine Hexacation as Potential Plurimodal Agent for Cancer Therapy: Exploring the Behavior as Ligand of Telomeric DNA G-Quadruplex Structures. Inorg Chem 2011; 50:7403-11. [DOI: 10.1021/ic200514z] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Ilse Manet
- Istituto per la Sintesi Organica e la Fotoreattività, Consiglio Nazionale delle Ricerche, via Gobetti 101, 40129 Bologna, Italy
| | - Francesco Manoli
- Istituto per la Sintesi Organica e la Fotoreattività, Consiglio Nazionale delle Ricerche, via Gobetti 101, 40129 Bologna, Italy
| | - Maria Pia Donzello
- Dipartimento di Chimica, Università degli Studi di Roma “La Sapienza”, P.le A. Moro 5, 00185 Roma, Italy
| | - Claudio Ercolani
- Dipartimento di Chimica, Università degli Studi di Roma “La Sapienza”, P.le A. Moro 5, 00185 Roma, Italy
| | - Daniela Vittori
- Dipartimento di Chimica, Università degli Studi di Roma “La Sapienza”, P.le A. Moro 5, 00185 Roma, Italy
| | - Luciano Cellai
- Istituto di Cristallografia, Consiglio Nazionale delle Ricerche, Area della Ricerca di Roma 1, 00015 Monterotondo Scalo, Rome, Italy
| | - Annalisa Masi
- Istituto di Cristallografia, Consiglio Nazionale delle Ricerche, Area della Ricerca di Roma 1, 00015 Monterotondo Scalo, Rome, Italy
| | - Sandra Monti
- Istituto per la Sintesi Organica e la Fotoreattività, Consiglio Nazionale delle Ricerche, via Gobetti 101, 40129 Bologna, Italy
| |
Collapse
|
57
|
Bhattacharjee AJ, Ahluwalia K, Taylor S, Jin O, Nicoludis JM, Buscaglia R, Brad Chaires J, Kornfilt DJP, Marquardt DGS, Yatsunyk LA. Induction of G-quadruplex DNA structure by Zn(II) 5,10,15,20-tetrakis(N-methyl-4-pyridyl)porphyrin. Biochimie 2011; 93:1297-309. [PMID: 21679743 DOI: 10.1016/j.biochi.2011.05.038] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2011] [Accepted: 05/31/2011] [Indexed: 01/07/2023]
Abstract
G-quadruplexes (GQ) are formed by the association of guanine-rich stretches of DNA. Certain small molecules can influence kinetics and thermodynamics of this association. Understanding the mechanism of ligand-assisted GQ folding is necessary for the design of more efficient cancer therapeutics. The oligonucleotide d(TAGGG)(2) forms parallel bimolecular GQ in the presence of ≥66 mM K(+); GQs are not formed under Na(+), Li(+) or low K(+) conditions. The thermodynamic parameters for GQ folding at 60 μM oligonucleotide and 100 mM KCl are ΔH = -35 ± 2 kcal mol(-1) and ΔG(310) = -1.4 kcal mol(-1). Quadruplex [d(TAGGG)(2)](2) binds 2-3 K(+) ions with K(d) of 0.5 ± 0.2 mM. Our work addresses the question of whether metal free 5,10,15,20-tetrakis(N-methyl-4-pyridyl)porphyrin (TMPyP4) and its Zn(II), Cu(II), and Pt(II) derivatives are capable of facilitating GQ folding of d(TAGGG)(2) from single stranded, or binding to preformed GQ, using UV-vis and circular dichroism (CD) spectroscopies. ZnTMPyP4 is unique among other porphyrins in its ability to induce GQ structure of d(TAGGG)(2), which also requires at least a low amount of potassium. ZnTMPyP4 binds with 2:1 stoichiometry possibly in an end-stacking mode with a ~10(6) M(-1) binding constant, determined through UV-vis and ITC titrations. This process is entropically driven and has ΔG(298) of -8.0 kcal mol(-1). TMPyP4 binds with 3:1 stoichiometry and K(a) of ~10(6) M(-1). ZnTMPyP4 and TMPyP4 are efficient stabilizers of [d(TAGGG)(2)](2) displaying ΔT(1/2) of 13.5 and 13.8 °C, respectively, at 1:2 GQ to porphyrin ratio; CuTMPyP4 shows a much weaker effect (ΔT(1/2) = 4.7 °C) and PtTMPyP4 is weakly destabilizing (ΔT(1/2) = -2.9 °C). The selectivity of ZnTMPyP4 for GQ versus dsDNA is comparable to that of TMPyP4. The ability of ZnTMPyP4 to bind and stabilize GQ, to induce GQ formation, and speed up its folding may suggest an important biological activity for this molecule.
Collapse
Affiliation(s)
- Amlan J Bhattacharjee
- Department of Chemistry and Biochemistry, Swarthmore College, 500 College Ave., Swarthmore, PA 19081, USA
| | | | | | | | | | | | | | | | | | | |
Collapse
|
58
|
Zhao C, Geng J, Feng L, Ren J, Qu X. Chiral Metallo-Supramolecular Complexes Selectively Induce Human Telomeric G-Quadruplex Formation under Salt-Deficient Conditions. Chemistry 2011; 17:8209-15. [DOI: 10.1002/chem.201100272] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2011] [Indexed: 12/11/2022]
|
59
|
Galstyan A, Sanz Miguel PJ, Wolf J, Freisinger E, Lippert B. Discrete Molecular Squares {[(en)M(CN)]4}4+ Derived from [(en)M(CN)2] (M = PtII, PdII). Eur J Inorg Chem 2011. [DOI: 10.1002/ejic.201001216] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
|
60
|
Ikawa Y, Touden S, Furuta H. N-fused porphyrin with pyridinium side-arms: a new class of aromatic ligand with DNA-binding ability. Org Biomol Chem 2011; 9:8068-78. [DOI: 10.1039/c1ob05981e] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
61
|
Manet I, Manoli F, Donzello MP, Viola E, Andreano G, Masi A, Cellai L, Monti S. A cationic ZnIIporphyrazine induces a stable parallel G-quadruplex conformation in human telomeric DNA. Org Biomol Chem 2011; 9:684-8. [DOI: 10.1039/c0ob00598c] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
|
62
|
Sun J, An Y, Zhang L, Chen HY, Han Y, Wang YJ, Mao ZW, Ji LN. Studies on synthesis, characterization, and G-quadruplex binding of Ru(II) complexes containing two dppz ligands. J Inorg Biochem 2010; 105:149-54. [PMID: 21194612 DOI: 10.1016/j.jinorgbio.2010.10.005] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2010] [Revised: 10/02/2010] [Accepted: 10/06/2010] [Indexed: 01/02/2023]
Abstract
In this work, the interaction between the guanine-rich single-strand oligomer AG(3)(T(2)AG(3))(3) quadruplex and two Ru(II) complexes, [Ru(L(1))(dppz)(2)](PF(6))(4) (1) and [Ru(L(2))(dppz)(2)](PF(6))(4) (2) (L(1) = 5,5'-di(1-(trimethylammonio)methyl)-2,2'-dipyridyl cation, L(2) = 5,5'-di(1-(triethylammonio)methyl)-2,2'-dipyridyl cation, dppz = dipyrido[3,2-a:2',3'-c] phenazine), has been studied by UV-Visible, fluorescence, DNA melting, and circular dichroism in K(+) buffer. The two complexes after binding to G-quadruplex have shown different DNA stability and fluorescence enhancement. The results show that both complexes can induce the stabilization of quadruplex DNA. ΔT(m) values of complexes 1 and 2 at [Ru]/[DNA] ratio of 1:1 were 9.4 and 7.0, respectively. Binding stoichiometry along with the quadruplex was investigated through a luminescence-based Job plot. The major inflection points for complexes 1 and 2 were 0.49 and 0.46, respectively. The data were consistent with the binding mode at a [quadruplex]/[complex] ratio of 1:1. In addition, the conformation of G-quadruplex was not changed by the complexes at the high ionic strength of K(+) buffer.
Collapse
Affiliation(s)
- Jing Sun
- MOE Key laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry and Chemical Engineering, Sun Yat-Sen University, Guangzhou, 510275, China
| | | | | | | | | | | | | | | |
Collapse
|
63
|
Georgiades SN, Abd Karim NH, Suntharalingam K, Vilar R. Interaction of metal complexes with G-quadruplex DNA. Angew Chem Int Ed Engl 2010; 49:4020-34. [PMID: 20503216 DOI: 10.1002/anie.200906363] [Citation(s) in RCA: 380] [Impact Index Per Article: 27.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Guanine-rich sequences of DNA can assemble into tetrastranded structures known as G-quadruplexes. It has been suggested that these secondary DNA structures could be involved in the regulation of several key biological processes. In the human genome, guanine-rich sequences with the potential to form G-quadruplexes exist in the telomere as well as in promoter regions of certain oncogenes. The identification of these sequences as novel targets for the development of anticancer drugs has sparked great interest in the design of molecules that can interact with quadruplex DNA. While most reported quadruplex DNA binders are based on purely organic templates, numerous metal complexes have more recently been shown to interact effectively with this DNA secondary structure. This Review provides an overview of the important roles that metal complexes can play as quadruplex DNA binding molecules, highlighting the unique properties metals can confer to these molecules.
Collapse
Affiliation(s)
- Savvas N Georgiades
- Department of Chemistry, Imperial College London, South Kensington, London SW7 2AZ, UK
| | | | | | | |
Collapse
|
64
|
Ghosh S, Majumder P, Pradhan SK, Dasgupta D. Mechanism of interaction of small transcription inhibitors with DNA in the context of chromatin and telomere. BIOCHIMICA ET BIOPHYSICA ACTA-GENE REGULATORY MECHANISMS 2010; 1799:795-809. [PMID: 20638489 DOI: 10.1016/j.bbagrm.2010.06.008] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/14/2010] [Revised: 06/23/2010] [Accepted: 06/30/2010] [Indexed: 01/13/2023]
Abstract
Small molecules from natural and synthetic sources have long been employed as human drugs. The transcription inhibitory potential of one class of these molecules has paved their use as anticancer drugs. The principal mode of action of these molecules is via reversible interaction with genomic DNA, double and multiple stranded. In this article we have revisited the mechanism of the interaction in the context of chromatin and telomere. The established modes of association of these molecules with double helical DNA provide a preliminary mechanism of their transcription inhibitory potential, but the scenario assumes a different dimension when the genomic DNA is associated with proteins in the transcription apparatus of both prokaryotic and eukaryotic organisms. We have discussed this altered scenario as a prelude to understand the chemical biology of their action in the cell. For the telomeric quadruplex DNA, we have reviewed the mechanism of their association with the quadruplex and resultant cellular consequence.
Collapse
Affiliation(s)
- Saptaparni Ghosh
- Biophysics Division, Saha Institute of Nuclear Physics, Sector-I, Block-AF, Bidhan Nagar, Kolkata Pin, 700064, India
| | | | | | | |
Collapse
|
65
|
Gonçalves DPN, Schmidt TL, Koeppel MB, Heckel A. DNA minicircles connected via G-quadruplex interaction modules. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2010; 6:1347-1352. [PMID: 20486229 DOI: 10.1002/smll.201000318] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
G-quadruplexes are becoming reliable alternative interaction modules for the construction of DNA nanoarchitectures due to their prompt inducibility by salts. In this Full Paper, we report the design and synthesis of two different DNA minicircles equipped with G-rich appendixes that can self-hybridize into a G-quadruplex, which acts as a DNA recruiter and glue. Both minicircles, one containing a hairpin-like G-rich region and the other an open tuning-fork-like G-rich region, have the potential to form DNA G-nanoconstructs but only the tuning-fork minicircle does so. Incubation of the tuning-fork minicircle with Na(+) and Ni(2+) results in the formation of minicircle dimers, while K(+) and Sr(2+) unexpectedly induce the formation of multimers. Moreover, a catenated DNA nanoconstruct is obtained when the components of the hairpin minicircle are incubated with K(+) or Na(+) and assembled in a stepwise sequence. All nanoconstructs are visualized by atomic force microscopy.
Collapse
Affiliation(s)
- Diana P N Gonçalves
- Goethe-University, Frankfurt Cluster of Excellence Macromolecular Complexes, Frankfurt Institute for Molecular Life Sciences, Frankfurt, Germany
| | | | | | | |
Collapse
|
66
|
Cationic porphyrin induced a telomeric DNA to g-quadruplex form in water. Bioinorg Chem Appl 2010:294756. [PMID: 18350116 PMCID: PMC2266808 DOI: 10.1155/2008/294756] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2007] [Revised: 10/11/2007] [Accepted: 12/13/2007] [Indexed: 11/28/2022] Open
Abstract
The formation of the DNA G-quadruplex is induced by the addition of a novel porphyrin carrying four cationic tethers. Circular dichroism spectroscopy reveals that the porphyrin binds to Tetrahymena telomeric repeat to form G-quadruplex under stabilizing-cation-deficient and no buffer conditions.
Collapse
|
67
|
Yang S, Xiang J, Yang Q, Li Q, Zhou Q, Zhang X, Tang Y, Xu G. Formation of Human Telomeric G-quadruplex Structures Induced by the Quaternary Benzophenanthridine Alkaloids: Sanguinarine, Nitidine, and Chelerythrine. CHINESE J CHEM 2010. [DOI: 10.1002/cjoc.201090145] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
|
68
|
Georgiades S, Abd Karim N, Suntharalingam K, Vilar R. Wechselwirkung von Metallkomplexen mit G-Quadruplex-DNA. Angew Chem Int Ed Engl 2010. [DOI: 10.1002/ange.200906363] [Citation(s) in RCA: 86] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
|
69
|
Monchaud D, Granzhan A, Saettel N, Guédin A, Mergny JL, Teulade-Fichou MP. "One ring to bind them all"-part I: the efficiency of the macrocyclic scaffold for g-quadruplex DNA recognition. J Nucleic Acids 2010; 2010. [PMID: 20725629 PMCID: PMC2915875 DOI: 10.4061/2010/525862] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2010] [Accepted: 02/18/2010] [Indexed: 01/01/2023] Open
Abstract
Macrocyclic scaffolds are particularly attractive for designing selective G-quadruplex ligands essentially because, on one hand, they show a poor affinity for the “standard” B-DNA conformation and, on the other hand, they fit nicely with the external G-quartets of quadruplexes. Stimulated by the pioneering studies on the cationic porphyrin TMPyP4 and the natural product telomestatin, follow-up studies have developed, rapidly leading to a large diversity of macrocyclic structures with remarkable-quadruplex binding properties and biological activities. In this review we summarize the current state of the art in detailing the three main categories of quadruplex-binding macrocycles described so far (telomestatin-like polyheteroarenes, porphyrins and derivatives, polyammonium cyclophanes), and in addressing both synthetic issues and biological aspects.
Collapse
Affiliation(s)
- David Monchaud
- Section Recherche, Institut Curie, CNRS UMR176, Centre Universitaire Paris XI, Batiment 110, 91405 Orsay, France
| | | | | | | | | | | |
Collapse
|
70
|
Alzeer J, Luedtke NW. pH-Mediated Fluorescence and G-Quadruplex Binding of Amido Phthalocyanines. Biochemistry 2010; 49:4339-48. [DOI: 10.1021/bi9020583] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Jawad Alzeer
- Institute of Organic Chemistry, University of Zürich, Winterthurerstrasse 190, Switzerland 8057
| | - Nathan W. Luedtke
- Institute of Organic Chemistry, University of Zürich, Winterthurerstrasse 190, Switzerland 8057
| |
Collapse
|
71
|
Lee HM, Chan DSH, Yang F, Lam HY, Yan SC, Che CM, Ma DL, Leung CH. Identification of natural product fonsecin B as a stabilizing ligand of c-myc G-quadruplex DNA by high-throughput virtual screening. Chem Commun (Camb) 2010; 46:4680-2. [PMID: 20383387 DOI: 10.1039/b926359d] [Citation(s) in RCA: 65] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Fonsecin B has been identified as stabilizing ligand of c-myc G-quadruplex DNA using high-throughput virtual screening of a natural product database, and inhibited Taq polymerase-mediated DNA extension in vitro through stabilization of the G-quadruplex secondary structure.
Collapse
Affiliation(s)
- Ho-Man Lee
- Department of Chemistry and Open Laboratory of Chemical Biology of the Institute of Molecular Technology for Drug Discovery and Synthesis, The University of Hong Kong, Pokfulam Road, Hong Kong
| | | | | | | | | | | | | | | |
Collapse
|
72
|
Du Y, Zhang D, Chen W, Zhang M, Zhou Y, Zhou X. Cationic N-confused porphyrin derivative as a better molecule scaffold for G-quadruplex recognition. Bioorg Med Chem 2010; 18:1111-6. [DOI: 10.1016/j.bmc.2009.12.049] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2009] [Revised: 12/15/2009] [Accepted: 12/16/2009] [Indexed: 01/12/2023]
|
73
|
Ma H, Zhang M, Zhang D, Huang R, Zhao Y, Yang H, Liu Y, Weng X, Zhou Y, Deng M, Xu L, Zhou X. Pyridyl-Substituted Corrole Isomers: Synthesis and their Regulation to G-quadruplex Structures. Chem Asian J 2010; 5:114-22. [DOI: 10.1002/asia.200900270] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
|
74
|
Yaku H, Murashima T, Miyoshi D, Sugimoto N. Anionic phthalocyanines targeting G-quadruplexes and inhibiting telomerase activity in the presence of excessive DNA duplexes. Chem Commun (Camb) 2010; 46:5740-2. [DOI: 10.1039/c0cc00956c] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
|
75
|
Song G, Ren J. Recognition and regulation of unique nucleic acid structures by small molecules. Chem Commun (Camb) 2010; 46:7283-94. [DOI: 10.1039/c0cc01312a] [Citation(s) in RCA: 86] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
|
76
|
Kieltyka R, Englebienne P, Moitessier N, Sleiman H. Quantifying interactions between G-quadruplex DNA and transition-metal complexes. Methods Mol Biol 2010; 608:223-255. [PMID: 20012425 DOI: 10.1007/978-1-59745-363-9_14] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Telomerase inhibition through guanine quadruplex sequestration by small-molecule drugs is of great current interest as an anticancer strategy. G-quadruplexes (GQs) can be formed at the guanine-rich sequences found at the end of the telomere. They possess a large electron-rich pi-surface which is favorable for the binding of electron-poor small molecules. Small molecules binding to GQs can sequester the telomere ends and inhibit the enzyme telomerase, which is expressed in cancer cells and absent in normal somatic cells. Transition-metal complexes present a myriad of geometries and numerous ligand coordination environments and allow for modular syntheses for development of compound libraries to target GQs. We have demonstrated the size of the pi-surface, binding selectivity and affinity of phenanthroimidazole platinum (II) complexes [PtPIX(en)](2+)2PF (6) (-) (X = naphthyl, phenyl and en = ethylenediamine) and metallosupramolecular complexes [Pt(4,4'-bpy)(en)] (4) (8+) 8PF (6) (-) (where bpy = bipyridine) to GQs can be readily tuned and assayed through a number of biophysical techniques.
Collapse
Affiliation(s)
- Roxanne Kieltyka
- Department of Chemistry, McGill University, Montreal, QC, Canada
| | | | | | | |
Collapse
|
77
|
Membrino A, Paramasivam M, Cogoi S, Alzeer J, Luedtke NW, Xodo LE. Cellular uptake and binding of guanidine-modified phthalocyanines to KRAS/HRASG-quadruplexes. Chem Commun (Camb) 2010; 46:625-7. [DOI: 10.1039/b918964e] [Citation(s) in RCA: 62] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
78
|
Chen M, Song G, Wang C, Hu D, Ren J, Qu X. Small-molecule selectively recognizes human telomeric G-quadruplex DNA and regulates its conformational switch. Biophys J 2009; 97:2014-23. [PMID: 19804733 DOI: 10.1016/j.bpj.2009.07.025] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2009] [Revised: 06/30/2009] [Accepted: 07/13/2009] [Indexed: 01/08/2023] Open
Abstract
Structural complexity is an inherent feature of the human telomeric sequence, and it presents a major challenge for developing ligands of pharmaceutical interest. Recent studies have pointed out that the induction of a quadruplex or change of a quadruplex conformation on binding may be the most powerful method to exert the desired biological effect. In this study, we demonstrate a quadruplex ligand that binds selectively to different forms of the human telomeric G-quadruplex structure and regulates its conformational switch. The results show that not only can oxazine750 selectively induce parallel quadruplex formation from a random coil telomeric oligonucleotide in the absence of added cations, it also can easily surpass the energy barrier between two structures and change the G-quadruplex conformation in Na(+) or K(+) solution. The combination of its unique properties, including the size and shape of the G-quadruplex and the small molecule, is proposed as the predominant force for regulating the special structural formation and transitions. These results may stimulate the design of new quadruplex binders that would be capable of discriminating different G-quadruplex structures as well as controlling biological phenomena, functional molecules, and nanomaterials.
Collapse
Affiliation(s)
- Mingli Chen
- State Key Laboratory of Rare Earth Resources Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, People's Republic of China
| | | | | | | | | | | |
Collapse
|
79
|
Arora A, Kumar N, Agarwal T, Maiti S. Retraction: Human telomeric G-quadruplex: targeting with small molecules. FEBS J 2009; 277:1345. [DOI: 10.1111/j.1742-4658.2009.07461.x] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
|
80
|
Alzeer J, Vummidi B, Roth P, Luedtke N. Guanidinium-modifizierte Phthalocyanine als Fluoreszenzsonden mit hoher G-Quadruplex-Affinität und als Transkriptionsregulatoren. Angew Chem Int Ed Engl 2009. [DOI: 10.1002/ange.200903685] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
|
81
|
Alzeer J, Vummidi B, Roth P, Luedtke N. Guanidinium-Modified Phthalocyanines as High-Affinity G-Quadruplex Fluorescent Probes and Transcriptional Regulators. Angew Chem Int Ed Engl 2009; 48:9362-5. [DOI: 10.1002/anie.200903685] [Citation(s) in RCA: 159] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
|
82
|
Zhang H, Xiao X, Wang P, Pang S, Qu F, Ai X, Zhang J. Conformational conversion of DNA G-quadruplex induced by a cationic porphyrin. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2009; 74:243-247. [PMID: 19577954 DOI: 10.1016/j.saa.2009.06.018] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/29/2008] [Revised: 05/28/2009] [Accepted: 06/07/2009] [Indexed: 05/28/2023]
Abstract
The interactions between cationic meso-tetrakis(4-(N-methylpyridiumyl))porphyrin (TMPyP4) and the G-quadruplex (G4) of human telomeric single-strand oligonucleotide d(TTAGGG)(2) (S12) have been investigated by means of circular dichroism (CD), UV-visible absorption and fluorescence spectroscopies. It is found that TMPyP4 can preferentially induce the conformational conversion of the G4 structure from the parallel type to the parallel/antiparallel mixture in the presence of K(+), and that it can directly induce the formation of antiparallel G4 structure from the single-strand oligonucleotide S12 in the absence of K(+). Furthermore, the comparable experiments of TMPyP4 with two single-strand oligonucleotides S6 d(TTAGGG) and S24 d(TAGGG(TTAGGG)(3)T) in the absence of K(+) show that TMPyP4 can also induce the formation of antiparallel G4 from S24 but not from S6, indicating that the end-loops of the G4 structure are the key factors for the formation of G4 induced by TMPyP4.
Collapse
Affiliation(s)
- Huijuan Zhang
- School of Life Science and Technology, Beijing Institute of Technology, Haidian District, Beijing 100081, China.
| | | | | | | | | | | | | |
Collapse
|
83
|
Zhang XF, Xiang JF, Tian MY, Yang QF, Sun HX, Yang S, Tang YL. Formation of an intramolecular G-quadruplex of human telomere induced by poly(L-lysine) under salt-deficient conditions. J Phys Chem B 2009; 113:7662-7. [PMID: 19408914 DOI: 10.1021/jp811183a] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
A single-stranded G-tract human telomere DNA sequence is able to fold into intramolecular G-quadruplex structures which may be important for a number of biological processes and disease-related mechanisms. Poly(L-lysine) (PLL) polymer is linear polypeptides with lysine as the repeat unit and has been employed as a gene carrier in achieving targeted delivery of DNA to cancer cells. To explore the influence of PLL on the conformation of Hum24 DNA, we have investigated the interaction of PLL with Hum24 by biophysical methods, mainly CD, ESI-MS, and polyacrylamide gel electrophoresis for the first time. The CD data have shown that PLL can induce single-stranded Hum24 to form an intramolecular parallel G-quadruplex structure, further confirmed by ESI-MS analysis and gel electrophoresis results. The formation of an intramolecular G-quadruplex is strongly dependent on the Hum24/PLL molar ratios and the length of both the polypeptides and oligonucleotide. Such phenomena may be interpreted by electrostatically attracting negative-charged Hum24 by positive-charged PLL which facilitates the close contact between the guanines and formation of hydrogen bonding, thus leading the final shape of a G-quadruplex structure.
Collapse
Affiliation(s)
- Xiu-feng Zhang
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory for Structural Chemistry of Unstable and Stable Species, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | | | | | | | | | | | | |
Collapse
|
84
|
Rodriguez R, Müller S, Yeoman JA, Trentesaux C, Riou JF, Balasubramanian S. A novel small molecule that alters shelterin integrity and triggers a DNA-damage response at telomeres. J Am Chem Soc 2009; 130:15758-9. [PMID: 18975896 DOI: 10.1021/ja805615w] [Citation(s) in RCA: 346] [Impact Index Per Article: 23.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
We describe a novel synthetic small molecule which shows an unprecedented stabilization of the human telomeric G-quadruplex with high selectivity relative to double-stranded DNA. We report that this compound can be used in vitro to inhibit telomerase activity and to uncap human POT1 (protection of telomeres 1) from the telomeric G-overhang. We also show that the small molecule G-quadruplex binder induces a partial alteration of shelterin through POT1 uncapping from telomeres in human HT1080 cancer cells and the presence of gammaH2AX foci colocalized at telomeres.
Collapse
Affiliation(s)
- Raphaël Rodriguez
- The University Chemical Laboratory, Lensfield Road, Cambridge, CB2 1EW, UK
| | | | | | | | | | | |
Collapse
|
85
|
Henn A, Joachimi A, Gonçalves DPN, Monchaud D, Teulade-Fichou MP, Sanders JKM, Hartig JS. Inhibition of dicing of guanosine-rich shRNAs by quadruplex-binding compounds. Chembiochem 2009; 9:2722-9. [PMID: 18924215 DOI: 10.1002/cbic.200800271] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
RNA interference is triggered by small hairpin precursors that are processed by the endonuclease dicer to yield active species such as siRNAs and miRNAs. To regulate the RNAi-mediated suppression of gene expression, we imagined a strategy that relies on the sequence-specific inhibition of shRNA precursor processing by immediate RNA-small molecule interactions. Here, we present a first step in this direction by augmenting shRNAs with guanosine-rich sequences that are prone to fold into four-stranded structures. The addition of small molecules that selectively bind to such quadruplex sequences should allow for the specific inhibition of dicing of shRNAs that contain suitable G-rich elements. In an attempt to find compounds that protect against dicer processing, we have examined the effects of quadruplex-binding compounds on the dicer processing of shRNAs containing G-quadruplexes. Although a variety of small molecules that are known to bind to quadruplexes inhibited in vitro dicing of shRNAs, only two substance classes, namely certain porphyrazines and bisquinolinium compounds, showed selective inhibition of G-rich shRNAs compared to control sequences lacking guanine-rich elements. The G-rich shRNAs displayed a potent knockdown of gene expression in mammalian cell culture, but the effect was not influenced by addition of the respective quadruplex-binding compounds.
Collapse
Affiliation(s)
- Anja Henn
- Department of Chemistry and Konstanz Research School of Chemical Biology (KoRS-CB), University of Konstanz, Universitätsstrasse 10, 78457 Konstanz, Germany
| | | | | | | | | | | | | |
Collapse
|
86
|
Bertrand H, Bombard S, Monchaud D, Talbot E, Guédin A, Mergny JL, Grünert R, Bednarski PJ, Teulade-Fichou MP. Exclusive platination of loop adenines in the human telomeric G-quadruplex. Org Biomol Chem 2009; 7:2864-71. [PMID: 19582295 DOI: 10.1039/b904599f] [Citation(s) in RCA: 69] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Hélène Bertrand
- Institut Curie, Section Recherche, CNRS UMR176, Centre Universitaire Paris XI, Bât. 110, 91405, Orsay, France
| | | | | | | | | | | | | | | | | |
Collapse
|
87
|
Arola-Arnal A, Benet-Buchholz J, Neidle S, Vilar R. Effects of Metal Coordination Geometry on Stabilization of Human Telomeric Quadruplex DNA by Square-Planar and Square-Pyramidal Metal Complexes. Inorg Chem 2008; 47:11910-9. [DOI: 10.1021/ic8016547] [Citation(s) in RCA: 102] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Anna Arola-Arnal
- Department of Chemistry, Imperial College London, South Kensington, London SW7 2AZ, United Kingdom, CRUK Biomolecular Structure Group, The School of Pharmacy University of London, London WC1N 1AX, United Kingdom, and Institute of Chemical Research of Catalonia (ICIQ), Avgda. Països Catalans 16, 43007 Tarragona, Spain
| | - Jordi Benet-Buchholz
- Department of Chemistry, Imperial College London, South Kensington, London SW7 2AZ, United Kingdom, CRUK Biomolecular Structure Group, The School of Pharmacy University of London, London WC1N 1AX, United Kingdom, and Institute of Chemical Research of Catalonia (ICIQ), Avgda. Països Catalans 16, 43007 Tarragona, Spain
| | - Stephen Neidle
- Department of Chemistry, Imperial College London, South Kensington, London SW7 2AZ, United Kingdom, CRUK Biomolecular Structure Group, The School of Pharmacy University of London, London WC1N 1AX, United Kingdom, and Institute of Chemical Research of Catalonia (ICIQ), Avgda. Països Catalans 16, 43007 Tarragona, Spain
| | - Ramón Vilar
- Department of Chemistry, Imperial College London, South Kensington, London SW7 2AZ, United Kingdom, CRUK Biomolecular Structure Group, The School of Pharmacy University of London, London WC1N 1AX, United Kingdom, and Institute of Chemical Research of Catalonia (ICIQ), Avgda. Països Catalans 16, 43007 Tarragona, Spain
| |
Collapse
|
88
|
Redman JE, Granadino-Roldán JM, Schouten JA, Ladame S, Reszka AP, Neidle S, Balasubramanian S. Recognition and discrimination of DNA quadruplexes by acridine-peptide conjugates. Org Biomol Chem 2008; 7:76-84. [PMID: 19081949 DOI: 10.1039/b814682a] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
We have explored a series of trisubstituted acridine-peptide conjugates for their ability to recognize and discriminate between DNA quadruplexes derived from the human telomere, and the c-kit and N-ras proto-oncogenes. Quadruplex affinity was measured as the peptide sequences were varied, together with their substitution position on the acridine, and the identity of the C-terminus (acid or amide). Surface plasmon resonance measurements revealed that all compounds bound to the human telomeric quadruplex with sub-micromolar affinity. Docking calculations from molecular modelling studies were used to model the effects of substituent orientation and peptide sequence. Modelling and experiment were in agreement that placement of the peptide over the face of the acridine is detrimental to binding affinity. The highest degrees of selectivity were observed towards the N-ras quadruplex by compounds capable of forming simultaneous contacts with their acridine and peptide moieties. The ligands that bound best displayed quadruplex affinities in the 1-5 nM range and at least 10-fold discrimination between the quadruplexes studied.
Collapse
Affiliation(s)
- James E Redman
- University Chemical Laboratory, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW, UK
| | | | | | | | | | | | | |
Collapse
|
89
|
Fu B, Zhang D, Weng X, Zhang M, Ma H, Ma Y, Zhou X. Cationic Metal-Corrole Complexes: Design, Synthesis, and Properties of Guanine-Quadruplex Stabilizers. Chemistry 2008; 14:9431-41. [DOI: 10.1002/chem.200800835] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
|
90
|
Ou TM, Lu YJ, Tan JH, Huang ZS, Wong KY, Gu LQ. G-quadruplexes: targets in anticancer drug design. ChemMedChem 2008; 3:690-713. [PMID: 18236491 DOI: 10.1002/cmdc.200700300] [Citation(s) in RCA: 408] [Impact Index Per Article: 25.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
G-quadruplexes are special secondary structures adopted in some guanine-rich DNA sequences. As guanine-rich sequences are present in important regions of the eukaryotic genome, such as telomeres and the regulatory regions of many genes, such structures may play important roles in the regulation of biological events in the body. G-quadruplexes have become valid targets for new anticancer drugs in the past few decades. Many leading compounds that target these structures have been reported, and a few of them have entered preclinical or clinical trials. Nonetheless, the selectivity of this kind of antitumor compound has yet to be improved in order to suppress the side effects caused by nonselective binding. As drug design targets, the topology and structural characteristics of quadruplexes, their possible biological roles, and the modes and sites of small-ligand binding to these structures should be understood clearly. Herein we provide a summary of published research that has set out to address the above problem to provide useful information on the design of small ligands that target G-quadruplexes. This review also covers research methodologies that have been developed to study the binding of ligands to G-quadruplexes.
Collapse
Affiliation(s)
- Tian-miao Ou
- School of Pharmaceutical Science, Sun Yat-sen University, Guangzhou 510080, People's Republic of China
| | | | | | | | | | | |
Collapse
|
91
|
Dash J, Shirude PS, Balasubramanian S. G-quadruplex recognition by bis-indole carboxamides. Chem Commun (Camb) 2008:3055-7. [PMID: 18688346 PMCID: PMC2746961 DOI: 10.1039/b806042h] [Citation(s) in RCA: 62] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Herein we report the de novo design and synthesis of a geometrically flexible bis-indole carboxamide and a constrained derivative, as a novel class of small molecule scaffold that exhibits high stabilization potential for DNA G-quadruplex sequences associated with the promoters of c-kit2 and c-myc.
Collapse
Affiliation(s)
- Jyotirmayee Dash
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, UK CB2 1EW
| | - Pravin S. Shirude
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, UK CB2 1EW
| | | |
Collapse
|
92
|
Monchaud D, Yang P, Lacroix L, Teulade-Fichou MP, Mergny JL. A Metal-Mediated Conformational Switch Controls G-Quadruplex Binding Affinity. Angew Chem Int Ed Engl 2008. [DOI: 10.1002/ange.200800468] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
|
93
|
Monchaud D, Yang P, Lacroix L, Teulade-Fichou MP, Mergny JL. A Metal-Mediated Conformational Switch Controls G-Quadruplex Binding Affinity. Angew Chem Int Ed Engl 2008; 47:4858-61. [DOI: 10.1002/anie.200800468] [Citation(s) in RCA: 115] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
|
94
|
Facile synthesis of ortho-pyridyl-substituted corroles and molecular structures of analogous porphyrins. Tetrahedron Lett 2008. [DOI: 10.1016/j.tetlet.2008.04.113] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
|
95
|
Monchaud D, Allain C, Bertrand H, Smargiasso N, Rosu F, Gabelica V, De Cian A, Mergny JL, Teulade-Fichou MP. Ligands playing musical chairs with G-quadruplex DNA: a rapid and simple displacement assay for identifying selective G-quadruplex binders. Biochimie 2008; 90:1207-23. [PMID: 18343231 DOI: 10.1016/j.biochi.2008.02.019] [Citation(s) in RCA: 214] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2007] [Accepted: 02/19/2008] [Indexed: 01/19/2023]
Abstract
We report here the details of G4-FID (G-quadruplex fluorescent intercalator displacement), a simple method aiming at evaluating quadruplex-DNA binding affinity and quadruplex- over duplex-DNA selectivity of putative ligands. This assay is based on the loss of fluorescence upon displacement of thiazole orange from quadruplex- and duplex-DNA matrices. The original protocol was tested using various quadruplex- and duplex-DNA targets, and with a wide panel of G-quadruplex ligands belonging to different families (i.e. from quinacridines to metallo-organic ligands) likely to display various binding modes. The reliability of the assay is further supported by comparisons with FRET-melting and ESI-MS assays.
Collapse
Affiliation(s)
- D Monchaud
- Institut Curie, Section Recherche, CNRS UMR176, Centre Universitaire Paris XI, Bat. 110, 91405 Orsay, France
| | | | | | | | | | | | | | | | | |
Collapse
|
96
|
Zhang HJ, Wang XF, Wang P, Ai XC, Zhang JP. Spectroscopic study on the binding of a cationic porphyrin to DNA G-quadruplex under different K+ concentrations. Photochem Photobiol Sci 2008; 7:948-55. [DOI: 10.1039/b809322a] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
|
97
|
Li G, Huang J, Zhang M, Zhou Y, Zhang D, Wu Z, Wang S, Weng X, Zhou X, Yang G. Bis(benzimidazole)pyridine derivative as a new class of G-quadruplex inducing and stabilizing ligand. Chem Commun (Camb) 2008:4564-6. [DOI: 10.1039/b807916a] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
|
98
|
Redman JE. Surface plasmon resonance for probing quadruplex folding and interactions with proteins and small molecules. Methods 2007; 43:302-12. [DOI: 10.1016/j.ymeth.2007.05.008] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2007] [Accepted: 05/21/2007] [Indexed: 10/22/2022] Open
|
99
|
Abstract
Over the past decade, nucleic acid chemists have seen the spectacular emergence of molecules designed to interact efficiently and selectively with a peculiar DNA structure named G-quadruplex. Initially derived from classical DNA intercalators, these G-quadruplex ligands progressively became the focal point of new excitement since they appear to inhibit selectively the growth of cancer cells thereby opening interesting perspectives towards the development of novel anti-cancer drugs. The present article aims to help researchers enter this exciting research field, and to highlight recent advances in the design of G-quadruplex ligands.
Collapse
Affiliation(s)
- David Monchaud
- Institut Curie, CNRS UMR176, Section Recherche, Centre Universitaire Paris XI, Bât. 110, 91405, Orsay, France
| | | |
Collapse
|
100
|
Zhang L, Huang J, Ren L, Bai M, Wu L, Zhai B, Zhou X. Synthesis and evaluation of cationic phthalocyanine derivatives as potential inhibitors of telomerase. Bioorg Med Chem 2007; 16:303-12. [PMID: 17945501 DOI: 10.1016/j.bmc.2007.09.037] [Citation(s) in RCA: 48] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2007] [Revised: 09/16/2007] [Accepted: 09/19/2007] [Indexed: 01/16/2023]
Abstract
A series of water-soluble cationic phthalocyanine derivatives (1-10) were designed and synthesized to develop novel and potent telomerase inhibitors. These phthalocyanine derivatives as inhibitors of telomerase were investigated via modified telomerase repeat amplification protocol (TRAP) assay. The TRAP assay indicates that these cationic compounds had strong telomerase inhibitory activity (IC(50)<1.65 microM). To determine whether the phthalocyanine derivatives binding to G-quadruplex enhance the block to DNA synthesis, primer extension reactions were carried out in the presence of phthalocyanines. The interaction of the G-quadruplex of telomerase DNA with these molecules was examined by CD melting and PCR stop assay. These cationic phthalocyanine derivatives can stabilize G-quadruplex, which is demonstrated by the increased T(m) values. All these results indicate that the phthalocyanine derivatives might be potential lead compounds for the development of new telomerase inhibitor.
Collapse
Affiliation(s)
- Lixia Zhang
- College of Chemistry and Molecular Sciences, Wuhan University, Hubei, Wuhan 430072, PR China
| | | | | | | | | | | | | |
Collapse
|