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Zhang X, Li Y, Chen Y, Liu Z, Li Z, Wang Z, Wang Y, Liu M. Design and synthesis of dual functional NBD-fluorophore-incorporated naphthalene diimide derivatives as G-quadruplex ligands. Bioorg Med Chem Lett 2024; 111:129903. [PMID: 39053704 DOI: 10.1016/j.bmcl.2024.129903] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2024] [Revised: 07/18/2024] [Accepted: 07/22/2024] [Indexed: 07/27/2024]
Abstract
Nitrobenzoxadiazole (NBD)-incorporated naphthalene diimide derivatives were designed and synthesized as candidates of antitumor agents with cytotoxicity against human pancreatic cancer cell MIA PaCa-2. Among these, compounds 1NND and 3NND exhibited fluorescent "turn-off" property toward human telomeric G-quadruplex (G4), which allows the direct measurement of dissociation constant (Kd) of ligands against G4 by fluorescence titration method. Notably, the compound 1NND not only exhibited great cytotoxic activity against MIA PaCa-2 with a half maximal inhibitory concentration (IC50) of 77.9 nM, but also exhibited high affinity against G4 with Kd of 1.72 μM. Furthermore, the target binding properties were investigated by circular dichroism (CD) spectra and further studied by molecular docking methods.
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Affiliation(s)
- Xinhang Zhang
- Key Laboratory of Structure-Based Drug Design and Discovery of Ministry of Education, Shenyang Pharmaceutical University, Shenyang, Liaoning 110016, China; Department of Organic Chemistry, School of Pharmaceutical Engineering, Shenyang Pharmaceutical University, Shenyang, Liaoning 110016, China
| | - Yashu Li
- Key Laboratory of Structure-Based Drug Design and Discovery of Ministry of Education, Shenyang Pharmaceutical University, Shenyang, Liaoning 110016, China; Department of Organic Chemistry, School of Pharmaceutical Engineering, Shenyang Pharmaceutical University, Shenyang, Liaoning 110016, China
| | - Yuchen Chen
- Key Laboratory of Structure-Based Drug Design and Discovery of Ministry of Education, Shenyang Pharmaceutical University, Shenyang, Liaoning 110016, China; Department of Organic Chemistry, School of Pharmaceutical Engineering, Shenyang Pharmaceutical University, Shenyang, Liaoning 110016, China
| | - Ziqi Liu
- Key Laboratory of Structure-Based Drug Design and Discovery of Ministry of Education, Shenyang Pharmaceutical University, Shenyang, Liaoning 110016, China; Department of Organic Chemistry, School of Pharmaceutical Engineering, Shenyang Pharmaceutical University, Shenyang, Liaoning 110016, China
| | - Zijin Li
- Key Laboratory of Structure-Based Drug Design and Discovery of Ministry of Education, Shenyang Pharmaceutical University, Shenyang, Liaoning 110016, China; Department of Organic Chemistry, School of Pharmaceutical Engineering, Shenyang Pharmaceutical University, Shenyang, Liaoning 110016, China
| | - Ziyin Wang
- Key Laboratory of Structure-Based Drug Design and Discovery of Ministry of Education, Shenyang Pharmaceutical University, Shenyang, Liaoning 110016, China; Department of Organic Chemistry, School of Pharmaceutical Engineering, Shenyang Pharmaceutical University, Shenyang, Liaoning 110016, China
| | - Yu Wang
- Key Laboratory of Structure-Based Drug Design and Discovery of Ministry of Education, Shenyang Pharmaceutical University, Shenyang, Liaoning 110016, China; Department of Organic Chemistry, School of Pharmaceutical Engineering, Shenyang Pharmaceutical University, Shenyang, Liaoning 110016, China
| | - Mingzhe Liu
- Key Laboratory of Structure-Based Drug Design and Discovery of Ministry of Education, Shenyang Pharmaceutical University, Shenyang, Liaoning 110016, China; Department of Organic Chemistry, School of Pharmaceutical Engineering, Shenyang Pharmaceutical University, Shenyang, Liaoning 110016, China.
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2
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Neidle S. A Phenotypic Approach to the Discovery of Potent G-Quadruplex Targeted Drugs. Molecules 2024; 29:3653. [PMID: 39125057 PMCID: PMC11314571 DOI: 10.3390/molecules29153653] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2024] [Revised: 07/29/2024] [Accepted: 07/30/2024] [Indexed: 08/12/2024] Open
Abstract
G-quadruplex (G4) sequences, which can fold into higher-order G4 structures, are abundant in the human genome and are over-represented in the promoter regions of many genes involved in human cancer initiation, progression, and metastasis. They are plausible targets for G4-binding small molecules, which would, in the case of promoter G4s, result in the transcriptional downregulation of these genes. However, structural information is currently available on only a very small number of G4s and their ligand complexes. This limitation, coupled with the currently restricted information on the G4-containing genes involved in most complex human cancers, has led to the development of a phenotypic-led approach to G4 ligand drug discovery. This approach was illustrated by the discovery of several generations of tri- and tetra-substituted naphthalene diimide (ND) ligands that were found to show potent growth inhibition in pancreatic cancer cell lines and are active in in vivo models for this hard-to-treat disease. The cycles of discovery have culminated in a highly potent tetra-substituted ND derivative, QN-302, which is currently being evaluated in a Phase 1 clinical trial. The major genes whose expression has been down-regulated by QN-302 are presented here: all contain G4 propensity and have been found to be up-regulated in human pancreatic cancer. Some of these genes are also upregulated in other human cancers, supporting the hypothesis that QN-302 is a pan-G4 drug of potential utility beyond pancreatic cancer.
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Affiliation(s)
- Stephen Neidle
- The School of Pharmacy, University College London, London WC1N 1AX, UK
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3
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Zhang Y, Bux K, Attana F, Wei D, Haider S, Parkinson GN. Structural descriptions of ligand interactions to RNA quadruplexes folded from the non-coding region of pseudorabies virus. Biochimie 2024:S0300-9084(24)00139-1. [PMID: 38876382 DOI: 10.1016/j.biochi.2024.06.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2023] [Revised: 05/02/2024] [Accepted: 06/12/2024] [Indexed: 06/16/2024]
Abstract
To rationalise the binding of specific ligands to RNA-quadruplex we investigated several naphthalene diimide ligands that interact with the non-coding region of Pseudorabies virus (PRV). Herein we report on the x-ray structure of the naphthalene diimide ND11 with an RNA G-quadruplex putative forming sequence from rPRV. Consistent with previously observed rPRV sequence it assembles into a bimolecular RNA G-quadruplex consisting of a pair of two tetrads stacked 3' to 5'. We observe that ND11 interacts by binding on both the externally available 5' and 3' quartets. The CUC (loop 1) is structurally altered to enhance the 5' mode of interaction. These loop residues are shifted significantly to generate a new ligand binding pocket whereas the terminal A14 residue is lifted away from the RNA G-quadruplex tetrad plane to be restacked above the bound ND11 ligand NDI core. CD analysis of this family of NDI ligands shows consistency in the spectra between the different ligands in the presence of the rPRV RNA G-quadruplex motif, reflecting a common folded topology and mode of ligand interaction. FRET melt assay confirms the strong stabilising properties of the tetrasubstituted NDI compounds and the contributions length of the substituted groups have on melt temperatures.
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Affiliation(s)
- Yashu Zhang
- Department of Pharmaceutical and Biological Chemistry, University College London School of Pharmacy, London, WC1N 1AX, UK; Key Laboratory of Pesticide Toxicology and Application Technique, College of Plant Protection, Shandong Agricultural University, Taian, China; State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan, 430070, China
| | - Khair Bux
- Faculty of Life Science, Shaheed Zulfikar Ali Bhutto Institute of Science and Technology, Karachi, 75600, Pakistan
| | - Fedaa Attana
- Department of Pharmaceutical and Biological Chemistry, University College London School of Pharmacy, London, WC1N 1AX, UK
| | - Dengguo Wei
- National Key Laboratory of Agricultural Microbiology, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, Hubei, China
| | - Shozeb Haider
- Department of Pharmaceutical and Biological Chemistry, University College London School of Pharmacy, London, WC1N 1AX, UK
| | - Gary N Parkinson
- Department of Pharmaceutical and Biological Chemistry, University College London School of Pharmacy, London, WC1N 1AX, UK.
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Iachettini S, Biroccio A, Zizza P. Therapeutic Use of G4-Ligands in Cancer: State-of-the-Art and Future Perspectives. Pharmaceuticals (Basel) 2024; 17:771. [PMID: 38931438 PMCID: PMC11206494 DOI: 10.3390/ph17060771] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2024] [Revised: 05/31/2024] [Accepted: 06/11/2024] [Indexed: 06/28/2024] Open
Abstract
G-quadruplexes (G4s) are guanine-rich non-canonical secondary structures of nucleic acids that were identified in vitro almost half a century ago. Starting from the early 1980s, these structures were also observed in eukaryotic cells, first at the telomeric level and later in regulatory regions of cancer-related genes, in regulatory RNAs and within specific cell compartments such as lysosomes, mitochondria, and ribosomes. Because of the involvement of these structures in a large number of biological processes and in the pathogenesis of several diseases, including cancer, the interest in G4 targeting has exponentially increased in the last few years, and a great number of novel G4 ligands have been developed. Notably, G4 ligands represent a large family of heterogeneous molecules that can exert their functions by recognizing, binding, and stabilizing G4 structures in multiple ways. Regarding anti-cancer activity, the efficacy of G4 ligands was originally attributed to the capability of these molecules to inhibit the activity of telomerase, an enzyme that elongates telomeres and promotes endless replication in cancer cells. Thereafter, novel mechanisms through which G4 ligands exert their antitumoral activities have been defined, including the induction of DNA damage, control of gene expression, and regulation of metabolic pathways, among others. Here, we provided a perspective on the structure and function of G4 ligands with particular emphasis on their potential role as antitumoral agents. In particular, we critically examined the problems associated with the clinical translation of these molecules, trying to highlight the main aspects that should be taken into account during the phases of drug design and development. Indeed, taking advantage of the successes and failures, and the more recent technological progresses in the field, it would be possible to hypothesize the development of these molecules in the future that would represent a valid option for those cancers still missing effective therapies.
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Affiliation(s)
| | | | - Pasquale Zizza
- Translational Oncology Research Unit, IRCCS—Regina Elena National Cancer Institute, Via Elio Chianesi, 53, 00144 Roma, Italy; (S.I.); (A.B.)
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Shou S, Li Y, Chen J, Zhang X, Zhang C, Jiang X, Liu F, Yi L, Zhang X, Geer E, Pu Z, Pang B. Understanding, diagnosing, and treating pancreatic cancer from the perspective of telomeres and telomerase. Cancer Gene Ther 2024:10.1038/s41417-024-00768-6. [PMID: 38594465 DOI: 10.1038/s41417-024-00768-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2024] [Revised: 03/21/2024] [Accepted: 03/22/2024] [Indexed: 04/11/2024]
Abstract
Telomerase is associated with cellular aging, and its presence limits cellular lifespan. Telomerase by preventing telomere shortening can extend the number of cell divisions for cancer cells. In adult pancreatic cells, telomeres gradually shorten, while in precancerous lesions of cancer, telomeres in cells are usually significantly shortened. At this time, telomerase is still in an inactive state, and it is not until before and after the onset of cancer that telomerase is reactivated, causing cancer cells to proliferate. Methylation of the telomerase reverse transcriptase (TERT) promoter and regulation of telomerase by lactate dehydrogenase B (LDHB) is the mechanism of telomerase reactivation in pancreatic cancer. Understanding the role of telomeres and telomerase in pancreatic cancer will help to diagnose and initiate targeted therapy as early as possible. This article reviews the role of telomeres and telomerase as biomarkers in the development of pancreatic cancer and the progress of research on telomeres and telomerase as targets for therapeutic intervention.
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Affiliation(s)
- Songting Shou
- Guang'anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Yuanliang Li
- Department of Oncology, The First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Jiaqin Chen
- Department of Gastroenterology, Dongzhimen Hospital, Beijing, China
| | - Xing Zhang
- Guang'anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Chuanlong Zhang
- Guang'anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Xiaochen Jiang
- Guang'anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Fudong Liu
- Guang'anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Li Yi
- Guang'anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Xiyuan Zhang
- Guang'anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - En Geer
- Guang'anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Zhenqing Pu
- Guang'anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Bo Pang
- Guang'anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China.
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Figueiredo J, Mergny JL, Cruz C. G-quadruplex ligands in cancer therapy: Progress, challenges, and clinical perspectives. Life Sci 2024; 340:122481. [PMID: 38301873 DOI: 10.1016/j.lfs.2024.122481] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2023] [Revised: 01/20/2024] [Accepted: 01/29/2024] [Indexed: 02/03/2024]
Abstract
Guanine-rich sequences can form G-quadruplexes (G4) in living cells, making these structures promising anti-cancer targets. Compounds able to recognize these structures have been investigated as potential anticancer drugs; however, no G4 binder has yet been approved in the clinic. Here, we describe G4 ligands structure-activity relationships, in vivo effects as well as clinical trials. Addressing G4 ligand characteristics, targeting challenges, and structure-activity relationships, this review provides insights into the development of potent and selective G4-targeting molecules for therapeutic applications.
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Affiliation(s)
- Joana Figueiredo
- CICS-UBI - Health Sciences Research Centre, University of Beira Interior, Covilhã, Portugal
| | - Jean-Louis Mergny
- Laboratoire d'Optique et Biosciences, Institut Polytechnique de Paris, CNRS, INSERM, Université Paris-Saclay, 91128 Palaiseau cedex, France; Institute of Biophysics of the CAS, v.v.i., Královopolská 135, 612 65 Brno, Czech Republic.
| | - Carla Cruz
- CICS-UBI - Health Sciences Research Centre, University of Beira Interior, Covilhã, Portugal; Departamento de Química, Faculdade de Ciências, Universidade da Beira Interior, Rua Marquês de Ávila e Bolama, 6201-001 Covilhã, Portugal.
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Ahmed AA, Chen S, Roman-Escorza M, Angell R, Oxenford S, McConville M, Barton N, Sunose M, Neidle D, Haider S, Arshad T, Neidle S. Structure-activity relationships for the G-quadruplex-targeting experimental drug QN-302 and two analogues probed with comparative transcriptome profiling and molecular modeling. Sci Rep 2024; 14:3447. [PMID: 38342953 PMCID: PMC10859377 DOI: 10.1038/s41598-024-54080-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2023] [Accepted: 02/08/2024] [Indexed: 02/13/2024] Open
Abstract
The tetrasubstituted naphthalene diimide compound QN-302 binds to G-quadruplex (G4) DNA structures. It shows high potency in pancreatic ductal adenocarcinoma (PDAC) cells and inhibits the transcription of cancer-related genes in these cells and in PDAC animal models. It is currently in Phase 1a clinical evaluation as an anticancer drug. A study of structure-activity relationships of QN-302 and two related analogues (CM03 and SOP1247) is reported here. These have been probed using comparisons of transcriptional profiles from whole-genome RNA-seq analyses, together with molecular modelling and molecular dynamics simulations. Compounds CM03 and SOP1247 differ by the presence of a methoxy substituent in the latter: these two compounds have closely similar transcriptional profiles. Whereas QN-302 (with an additional benzyl-pyrrolidine group), although also showing down-regulatory effects in the same cancer-related pathways, has effects on distinct genes, for example in the hedgehog pathway. This distinctive pattern of genes affected by QN-302 is hypothesized to contribute to its superior potency compared to CM03 and SOP1247. Its enhanced ability to stabilize G4 structures has been attributed to its benzyl-pyrrolidine substituent fitting into and filling most of the space in a G4 groove compared to the hydrogen atom in CM03 or the methoxy group substituent in SOP1247.
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Affiliation(s)
- Ahmed Abdullah Ahmed
- The School of Pharmacy, University College London, London, WC1N 1AX, UK
- Now at Guy's Cancer Centre, Guy's Hospital, London, SE1 9RT, UK
| | - Shuang Chen
- The School of Pharmacy, University College London, London, WC1N 1AX, UK
| | | | - Richard Angell
- The School of Pharmacy, University College London, London, WC1N 1AX, UK
- Now at Medicines Discovery Institute, Cardiff University, Cardiff, CF10 3AT, UK
| | - Sally Oxenford
- The School of Pharmacy, University College London, London, WC1N 1AX, UK
- Now at Artios Ltd, Cambridge, CB22 3FH, UK
| | | | | | - Mihiro Sunose
- Sygnature Discovery Ltd, BioCity, Nottingham, NG1 1GR, UK
| | - Dan Neidle
- Tax Policy Associates, London, EC1R 0ET, UK
| | - Shozeb Haider
- The School of Pharmacy, University College London, London, WC1N 1AX, UK
| | - Tariq Arshad
- Qualigen Therapeutics Inc, Carlsbad, CA, 92011, USA
| | - Stephen Neidle
- The School of Pharmacy, University College London, London, WC1N 1AX, UK.
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Han ZQ, Wen LN. Application of G-quadruplex targets in gastrointestinal cancers: Advancements, challenges and prospects. World J Gastrointest Oncol 2023; 15:1149-1173. [PMID: 37546556 PMCID: PMC10401460 DOI: 10.4251/wjgo.v15.i7.1149] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/11/2023] [Revised: 04/11/2023] [Accepted: 05/08/2023] [Indexed: 07/12/2023] Open
Abstract
Genomic instability and inflammation are considered to be two enabling characteristics that support cancer development and progression. G-quadruplex structure is a key element that contributes to genomic instability and inflammation. G-quadruplexes were once regarded as simply an obstacle that can block the transcription of oncogenes. A ligand targeting G-quadruplexes was found to have anticancer activity, making G-quadruplexes potential anticancer targets. However, further investigation has revealed that G-quadruplexes are widely distributed throughout the human genome and have many functions, such as regulating DNA replication, DNA repair, transcription, translation, epigenetics, and inflammatory response. G-quadruplexes play double regulatory roles in transcription and translation. In this review, we focus on G-quadruplexes as novel targets for the treatment of gastrointestinal cancers. We summarize the application basis of G-quadruplexes in gastrointestinal cancers, including their distribution sites, structural characteristics, and physiological functions. We describe the current status of applications for the treatment of esophageal cancer, pancreatic cancer, hepatocellular carcinoma, gastric cancer, colorectal cancer, and gastrointestinal stromal tumors, as well as the associated challenges. Finally, we review the prospective clinical applications of G-quadruplex targets, providing references for targeted treatment strategies in gastrointestinal cancers.
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Affiliation(s)
- Zong-Qiang Han
- Department of Laboratory Medicine, Beijing Xiaotangshan Hospital, Beijing 102211, China
| | - Li-Na Wen
- Department of Clinical Nutrition, Beijing Shijitan Hospital, Capital Medical University, Beijing 100038, China
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Zonjić I, Radić Stojković M, Crnolatac I, Tomašić Paić A, Pšeničnik S, Vasilev A, Kandinska M, Mondeshki M, Baluschev S, Landfester K, Glavaš-Obrovac L, Jukić M, Kralj J, Brozovic A, Horvat L, Tumir LM. Styryl dyes with N-Methylpiperazine and N-Phenylpiperazine Functionality: AT-DNA and G-quadruplex binding ligands and theranostic agents. Bioorg Chem 2022; 127:105999. [DOI: 10.1016/j.bioorg.2022.105999] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2022] [Revised: 06/24/2022] [Accepted: 06/28/2022] [Indexed: 11/28/2022]
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Wang X, Zhang M, Xiong XQ, Yang H, Wang P, Zhang K, Awadasseid A, Narva S, Wu YL, Zhang W. Design, synthesis and bioactivity of novel naphthalimide-benzotriazole conjugates against A549 cells via targeting BCL2 G-quadruplex and inducing autophagy. Life Sci 2022; 302:120651. [PMID: 35597548 DOI: 10.1016/j.lfs.2022.120651] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2022] [Revised: 05/11/2022] [Accepted: 05/16/2022] [Indexed: 12/24/2022]
Abstract
AIMS In this study, a series of novel naphthalimide-benzotriazole conjugates (1a-3c) based on 1, 8-naphthalimide as a core skeleton, aiming at G-quadruplexes, were designed and synthesized, and their anti-cancer activity and mechanism were studied. MATERIALS AND METHODS Using the CCK-8 assay, FRET melting, EMSA, CD, and molecular docking, intracellular assays, western blotting, immunofluorescence, and flow cytometry. KEY FINDINGS By the CCK-8 assay, it was found that the compound, 2-(3-(piperazin-1-yl)propyl)-6-(1H-benzo [d][1,2,3]triazol-1-yl)-1H-benzo[de]isoquinoline-1,3(2H)-dione (3a), has better activity against A549 cells. Through extracellular assays, including FRET melting, EMSA, CD, and molecular docking, results showed that 3a selectively interacted with BCL2 G-quadruplex(es). Further studies by intracellular assays, including western blotting, immunofluorescence, flow cytometry, etc., verified that 3a mediated the death of A549 cells by two pathways: inhibition of the expression of the BCL2 gene, causing tumor cell apoptosis, and promotion of genetic instability, causing autophagy. This study suggests that the type of compounds, in particular, 3a, may be a potential molecule to explore for BCL2 G-quadruplex-targeted drugs against lung cancer. SIGNIFICANCE Our findings demonstrate that compound 3a as a BCL2 G-quadruplex ligand induces DNA damage, autophagy, and apoptosis in A549 cells. This study provides us with a type of lead compound as an anti-tumor drug.
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Affiliation(s)
- Xiao Wang
- Lab of Chemical Biology and Molecular Drug Design, College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou, 310014, China; Institute of Drug Development & Chemical Biology, Zhejiang University of Technology, Hangzhou, 310014, China
| | - Mi Zhang
- Lab of Chemical Biology and Molecular Drug Design, College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou, 310014, China; Institute of Drug Development & Chemical Biology, Zhejiang University of Technology, Hangzhou, 310014, China
| | - Xu-Qiong Xiong
- Lab of Chemical Biology and Molecular Drug Design, College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou, 310014, China; Institute of Drug Development & Chemical Biology, Zhejiang University of Technology, Hangzhou, 310014, China.
| | - Hao Yang
- Lab of Chemical Biology and Molecular Drug Design, College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou, 310014, China; Institute of Drug Development & Chemical Biology, Zhejiang University of Technology, Hangzhou, 310014, China
| | - Panpan Wang
- Lab of Chemical Biology and Molecular Drug Design, College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou, 310014, China; Institute of Drug Development & Chemical Biology, Zhejiang University of Technology, Hangzhou, 310014, China
| | - Koutian Zhang
- Zhejiang Jianing Pharmaceutical Technology Co., Ltd, Hangzhou, 310051, China
| | - Annoor Awadasseid
- Lab of Chemical Biology and Molecular Drug Design, College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou, 310014, China; Institute of Drug Development & Chemical Biology, Zhejiang University of Technology, Hangzhou, 310014, China
| | - Suresh Narva
- Lab of Chemical Biology and Molecular Drug Design, College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou, 310014, China; Institute of Drug Development & Chemical Biology, Zhejiang University of Technology, Hangzhou, 310014, China
| | - Yan-Ling Wu
- Lab of Molecular Immunology, Virus Inspection Department, Zhejiang Provincial Center for Disease Control and Prevention, Hangzhou, 310051, China.
| | - Wen Zhang
- Lab of Chemical Biology and Molecular Drug Design, College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou, 310014, China; Institute of Drug Development & Chemical Biology, Zhejiang University of Technology, Hangzhou, 310014, China.
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11
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Structured Waters Mediate Small Molecule Binding to G-Quadruplex Nucleic Acids. Pharmaceuticals (Basel) 2021; 15:ph15010007. [PMID: 35056064 PMCID: PMC8781208 DOI: 10.3390/ph15010007] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2021] [Revised: 12/19/2021] [Accepted: 12/20/2021] [Indexed: 01/24/2023] Open
Abstract
The role of G-quadruplexes in human cancers is increasingly well-defined. Accordingly, G-quadruplexes can be suitable drug targets and many small molecules have been identified to date as G-quadruplex binders, some using computer-based design methods and co-crystal structures. The role of bound water molecules in the crystal structures of G-quadruplex-small molecule complexes has been analyzed in this study, focusing on the water arrangements in several G-quadruplex ligand complexes. One is the complex between the tetrasubstituted naphthalene diimide compound MM41 and a human intramolecular telomeric DNA G-quadruplex, and the others are in substituted acridine bimolecular G-quadruplex complexes. Bridging water molecules form most of the hydrogen-bond contacts between ligands and DNA in the parallel G-quadruplex structures examined here. Clusters of structured water molecules play essential roles in mediating between ligand side chain groups/chromophore core and G-quadruplex. These clusters tend to be conserved between complex and native G-quadruplex structures, suggesting that they more generally serve as platforms for ligand binding, and should be taken into account in docking and in silico studies.
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Banerjee N, Panda S, Chatterjee S. Frontiers in G-Quadruplex Therapeutics in Cancer: Selection of Small Molecules, Peptides and Aptamers. Chem Biol Drug Des 2021; 99:1-31. [PMID: 34148284 DOI: 10.1111/cbdd.13910] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2021] [Revised: 05/27/2021] [Accepted: 06/07/2021] [Indexed: 11/28/2022]
Abstract
G-quadruplex, a unique secondary structure in nucleic acids found throughout human genome, elicited widespread interest in the field of therapeutic research. Being present in key regulatory regions of oncogenes, RNAs and telomere, G-quadruplex structure regulates transcription, translation, splicing etc. Changes in its structure and stability leads to differential expression of oncogenes causing cancer. Thus, targeting G-Quadruplex structures with small molecules/other biologics has shown elevated research interest. Covering previous reports, in this review we try to enlighten the facts on the structural diversity in G-quadruplex ligands aiming to provide newer insights to design first-in-class drugs for the next generation cancer treatment.
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Affiliation(s)
- Nilanjan Banerjee
- Department of Biophysics, Bose Institute, P-1/12 CIT Road, Scheme VIIM, Kankurgachi, Kolkata, 700054, India
| | - Suman Panda
- Department of Biophysics, Bose Institute, P-1/12 CIT Road, Scheme VIIM, Kankurgachi, Kolkata, 700054, India
| | - Subhrangsu Chatterjee
- Department of Biophysics, Bose Institute, P-1/12 CIT Road, Scheme VIIM, Kankurgachi, Kolkata, 700054, India
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13
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Sharma S, Mukherjee AK, Roy SS, Bagri S, Lier S, Verma M, Sengupta A, Kumar M, Nesse G, Pandey DP, Chowdhury S. Human telomerase is directly regulated by non-telomeric TRF2-G-quadruplex interaction. Cell Rep 2021; 35:109154. [PMID: 34010660 PMCID: PMC7611063 DOI: 10.1016/j.celrep.2021.109154] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2020] [Revised: 02/15/2021] [Accepted: 04/28/2021] [Indexed: 12/16/2022] Open
Abstract
Human telomerase reverse transcriptase (hTERT) remains suppressed in most normal somatic cells. Resulting erosion of telomeres leads eventually to replicative senescence. Reactivation of hTERT maintains telomeres and triggers progression of >90% of cancers. However, any direct causal link between telomeres and telomerase regulation remains unclear. Here, we show that the telomere-repeat-binding-factor 2 (TRF2) binds hTERT promoter G-quadruplexes and recruits the polycomb-repressor EZH2/PRC2 complex. This is causal for H3K27 trimethylation at the hTERT promoter and represses hTERT in cancer as well as normal cells. Two highly recurrent hTERT promoter mutations found in many cancers, including ∼83% glioblastoma multiforme, that are known to destabilize hTERT promoter G-quadruplexes, showed loss of TRF2 binding in patient-derived primary glioblastoma multiforme cells. Ligand-induced G-quadruplex stabilization restored TRF2 binding, H3K27-trimethylation, and hTERT re-suppression. These results uncover a mechanism of hTERT regulation through a telomeric factor, implicating telomere-telomerase molecular links important in neoplastic transformation, aging, and regenerative therapy.
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Affiliation(s)
- Shalu Sharma
- Integrative and Functional Biology Unit, CSIR-Institute of Genomics and Integrative Biology, New Delhi 110025, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India; CSIR-Institute of Genomics and Integrative Biology, New Delhi 110025, India
| | - Ananda Kishore Mukherjee
- Integrative and Functional Biology Unit, CSIR-Institute of Genomics and Integrative Biology, New Delhi 110025, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India; CSIR-Institute of Genomics and Integrative Biology, New Delhi 110025, India
| | - Shuvra Shekhar Roy
- Integrative and Functional Biology Unit, CSIR-Institute of Genomics and Integrative Biology, New Delhi 110025, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India; CSIR-Institute of Genomics and Integrative Biology, New Delhi 110025, India
| | - Sulochana Bagri
- Integrative and Functional Biology Unit, CSIR-Institute of Genomics and Integrative Biology, New Delhi 110025, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India; CSIR-Institute of Genomics and Integrative Biology, New Delhi 110025, India
| | - Silje Lier
- Department of Microbiology, Oslo University Hospital, Oslo, Norway; Institute of Basic Medical Sciences, University of Oslo, Oslo, Norway
| | - Meenakshi Verma
- Integrative and Functional Biology Unit, CSIR-Institute of Genomics and Integrative Biology, New Delhi 110025, India; CSIR-Institute of Genomics and Integrative Biology, New Delhi 110025, India
| | - Antara Sengupta
- Integrative and Functional Biology Unit, CSIR-Institute of Genomics and Integrative Biology, New Delhi 110025, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India; CSIR-Institute of Genomics and Integrative Biology, New Delhi 110025, India
| | - Manish Kumar
- Imaging Facility, CSIR-Institute of Genomics and Integrative Biology, New Delhi 110025, India; CSIR-Institute of Genomics and Integrative Biology, New Delhi 110025, India
| | - Gaute Nesse
- Department of Microbiology, Oslo University Hospital, Oslo, Norway
| | | | - Shantanu Chowdhury
- Integrative and Functional Biology Unit, CSIR-Institute of Genomics and Integrative Biology, New Delhi 110025, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India; GNR Knowledge Centre for Genome and Informatics, CSIR-Institute of Genomics and Integrative Biology, New Delhi 110025, India; CSIR-Institute of Genomics and Integrative Biology, New Delhi 110025, India.
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14
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Street STG, Peñalver P, O'Hagan MP, Hollingworth GJ, Morales JC, Galan MC. Imide Condensation as a Strategy for the Synthesis of Core-Diversified G-Quadruplex Ligands with Anticancer and Antiparasitic Activity*. Chemistry 2021; 27:7712-7721. [PMID: 33780044 PMCID: PMC8251916 DOI: 10.1002/chem.202100040] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2021] [Indexed: 11/22/2022]
Abstract
A facile imide coupling strategy for the one-step preparation of G-quadruplex ligands with varied core chemistries is described. The G-quadruplex stabilization of a library of nine compounds was examined using FRET melting experiments, and CD, UV-Vis, fluorescence and NMR titrations, identifying several compounds that were capable of stabilizing G-quadruplex DNA with interesting selectivity profiles. The best G4 ligand was identified as compound 3, which was based on a perylene scaffold and exhibited 40-fold selectivity for a telomeric G-quadruplex over duplex DNA. Surprisingly, a tetra-substituted flexible core, compound 11, also exhibited selective stabilization of G4 DNA over duplex DNA. The anticancer and antiparasitic activity of the library was also examined, with the lead compound 3 exhibiting nanomolar inhibition of Trypanosoma brucei with 78-fold selectivity over MRC5 cells. The cellular localization of this compound was also studied via fluorescence microscopy. We found that uptake was time dependant, with localization outside the nucleus and kinetoplast that could be due to strong fluorescence quenching in the presence of small amounts of DNA.
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Affiliation(s)
- Steven T. G. Street
- School of ChemistryUniversity of BristolCantocks CloseBristolBS8 1TSUK
- Department of ChemistryUniversity of VictoriaDr. S. T. G. StreetVictoriaBC V8P 5C2Canada
| | - Pablo Peñalver
- Instituto de Parasitología y Biomedicina López NeyraCSIC, PTS GranadaAvenida del Conocimiento, 1718016Armilla, GranadaSpain
| | | | | | - Juan C. Morales
- Instituto de Parasitología y Biomedicina López NeyraCSIC, PTS GranadaAvenida del Conocimiento, 1718016Armilla, GranadaSpain
| | - M. Carmen Galan
- School of ChemistryUniversity of BristolCantocks CloseBristolBS8 1TSUK
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15
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Platella C, Napolitano E, Riccardi C, Musumeci D, Montesarchio D. Disentangling the Structure-Activity Relationships of Naphthalene Diimides as Anticancer G-Quadruplex-Targeting Drugs. J Med Chem 2021; 64:3578-3603. [PMID: 33751881 PMCID: PMC8041303 DOI: 10.1021/acs.jmedchem.1c00125] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
![]()
In the context of
developing efficient anticancer therapies aimed
at eradicating any sort of tumors, G-quadruplexes represent excellent
targets. Small molecules able to interact with G-quadruplexes can
interfere with cell pathways specific of tumors and common to all
cancers. Naphthalene diimides
(NDIs) are among the most promising, putative anticancer G-quadruplex-targeting
drugs, due to their ability to simultaneously target multiple G-quadruplexes
and their strong, selective in vitro and in vivo anticancer activity.
Here, all the available biophysical, biological, and structural data
concerning NDIs targeting G-quadruplexes were systematically analyzed.
Structure–activity correlations were obtained by analyzing
biophysical data of their interactions with G-quadruplex targets and
control duplex structures, in parallel to biological data concerning
the antiproliferative activity of NDIs on cancer and normal cells.
In addition, NDI binding modes to G-quadruplexes were discussed in
consideration of the structures and properties of NDIs by in-depth
analysis of the available structural models of G-quadruplex/NDI complexes.
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Affiliation(s)
- Chiara Platella
- Department of Chemical Sciences, University of Naples Federico II, via Cintia 21, I-80126 Naples, Italy
| | - Ettore Napolitano
- Department of Chemical Sciences, University of Naples Federico II, via Cintia 21, I-80126 Naples, Italy
| | - Claudia Riccardi
- Department of Chemical Sciences, University of Naples Federico II, via Cintia 21, I-80126 Naples, Italy
| | - Domenica Musumeci
- Department of Chemical Sciences, University of Naples Federico II, via Cintia 21, I-80126 Naples, Italy.,Institute of Biostructures and Bioimages, CNR, via Mezzocannone 16, I-80134 Naples, Italy
| | - Daniela Montesarchio
- Department of Chemical Sciences, University of Naples Federico II, via Cintia 21, I-80126 Naples, Italy
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16
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Kosiol N, Juranek S, Brossart P, Heine A, Paeschke K. G-quadruplexes: a promising target for cancer therapy. Mol Cancer 2021; 20:40. [PMID: 33632214 PMCID: PMC7905668 DOI: 10.1186/s12943-021-01328-4] [Citation(s) in RCA: 228] [Impact Index Per Article: 76.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2020] [Accepted: 02/01/2021] [Indexed: 12/13/2022] Open
Abstract
DNA and RNA can fold into a variety of alternative conformations. In recent years, a particular nucleic acid structure was discussed to play a role in malignant transformation and cancer development. This structure is called a G-quadruplex (G4). G4 structure formation can drive genome instability by creating mutations, deletions and stimulating recombination events. The importance of G4 structures in the characterization of malignant cells was currently demonstrated in breast cancer samples. In this analysis a correlation between G4 structure formation and an increased intratumor heterogeneity was identified. This suggests that G4 structures might allow breast cancer stratification and supports the identification of new personalized treatment options. Because of the stability of G4 structures and their presence within most human oncogenic promoters and at telomeres, G4 structures are currently tested as a therapeutic target to downregulate transcription or to block telomere elongation in cancer cells. To date, different chemical molecules (G4 ligands) have been developed that aim to target G4 structures. In this review we discuss and compare G4 function and relevance for therapeutic approaches and their impact on cancer development for three cancer entities, which differ significantly in their amount and type of mutations: pancreatic cancer, leukemia and malignant melanoma. G4 structures might present a promising new strategy to individually target tumor cells and could support personalized treatment approaches in the future.
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Affiliation(s)
- Nils Kosiol
- Department of Oncology, Hematology, Rheumatology and Immune-Oncology, University Hospital Bonn, 53127, Bonn, Germany
| | - Stefan Juranek
- Department of Oncology, Hematology, Rheumatology and Immune-Oncology, University Hospital Bonn, 53127, Bonn, Germany
| | - Peter Brossart
- Department of Oncology, Hematology, Rheumatology and Immune-Oncology, University Hospital Bonn, 53127, Bonn, Germany
| | - Annkristin Heine
- Department of Oncology, Hematology, Rheumatology and Immune-Oncology, University Hospital Bonn, 53127, Bonn, Germany
| | - Katrin Paeschke
- Department of Oncology, Hematology, Rheumatology and Immune-Oncology, University Hospital Bonn, 53127, Bonn, Germany.
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17
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Hao X, Wang C, Wang Y, Li C, Hou J, Zhang F, Kang C, Gao L. Topological conversion of human telomeric G-quadruplexes from hybrid to parallel form induced by naphthalene diimide ligands. Int J Biol Macromol 2020; 167:1048-1058. [PMID: 33188810 DOI: 10.1016/j.ijbiomac.2020.11.059] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2020] [Revised: 11/09/2020] [Accepted: 11/09/2020] [Indexed: 12/17/2022]
Abstract
G-quadruplexes (GQs) have become promising anti-cancer therapeutic targets, which are formed by the folding of a guanine-rich repeat DNA/RNA sequence at human telomeres or oncogene promoters. Polymorphism has been observed for the folding topologies of intramolecular GQs. Here we report the topological conversion of human telomeric GQ induced by naphthalene diimide (NDI) ligands in K+ solution. The ligands selectively induce metastable hybrid-type GQs to highly stable parallel-type GQ at physiological temperature (37 °C) in dilute aqueous solutions and under crowding conditions that mimic cellular bioenvironment. According to spectroscopic analyses, the topological conversion is speculated to undergo stepwise unfolding of hybrid-type GQ through intermediate states to parallel-type GQ. The results will prompt further studies on the designs of ligands with GQ conformation regulation functions and nanotechnological systems based on nucleic acids with dynamic regulation of GQ conformation.
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Affiliation(s)
- Xueyu Hao
- Laboratory of Polymer Composite and Engineering, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China; University of Science and Technology of China, Hefei 230026, China
| | - Chunyu Wang
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun 130012, China
| | - Yu Wang
- Laboratory of Polymer Composite and Engineering, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China; University of Science and Technology of China, Hefei 230026, China
| | - Chunjie Li
- Laboratory of Polymer Composite and Engineering, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
| | - Jingwei Hou
- Laboratory of Polymer Composite and Engineering, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
| | - Feng Zhang
- Laboratory of Polymer Composite and Engineering, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
| | - Chuanqing Kang
- Laboratory of Polymer Composite and Engineering, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China; University of Science and Technology of China, Hefei 230026, China.
| | - Lianxun Gao
- Laboratory of Polymer Composite and Engineering, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
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18
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Abstract
Several decades elapsed between the first descriptions of G-quadruplex nucleic acid structures (G4s) assembled in vitro and the emergence of experimental findings indicating that such structures can form and function in living systems. A large body of evidence now supports roles for G4s in many aspects of nucleic acid biology, spanning processes from transcription and chromatin structure, mRNA processing, protein translation, DNA replication and genome stability, and telomere and mitochondrial function. Nonetheless, it must be acknowledged that some of this evidence is tentative, which is not surprising given the technical challenges associated with demonstrating G4s in biology. Here I provide an overview of evidence for G4 biology, focusing particularly on the many potential pitfalls that can be encountered in its investigation, and briefly discuss some of broader biological processes that may be impacted by G4s including cancer.
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Affiliation(s)
- F. Brad Johnson
- Department of Pathology and Laboratory Medicine, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA, United States
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19
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Zhirov AM, Kovalev DA, Ulshina DV, Pisarenko SV, Demidov OP, Borovlev IV. Diazapyrenes: interaction with nucleic acids and biological activity. Chem Heterocycl Compd (N Y) 2020; 56:674-693. [PMID: 32836316 PMCID: PMC7366485 DOI: 10.1007/s10593-020-02717-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2019] [Accepted: 11/26/2019] [Indexed: 12/22/2022]
Abstract
The review summarizes data on the practical aspects of the interaction of nucleic acids with diazapyrene derivatives. The information on biological activity is given and the probable mechanisms underlying the action of diazapyrenes are analyzed. It contains 119 references.
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Affiliation(s)
- Andrey M. Zhirov
- Stavropol Research Anti-Plague Institute, 13-15 Sovetskaya St, Stavropol, 355035 Russia
| | - Dmitry A. Kovalev
- Stavropol Research Anti-Plague Institute, 13-15 Sovetskaya St, Stavropol, 355035 Russia
| | - Diana V. Ulshina
- Stavropol Research Anti-Plague Institute, 13-15 Sovetskaya St, Stavropol, 355035 Russia
| | - Sergey V. Pisarenko
- Stavropol Research Anti-Plague Institute, 13-15 Sovetskaya St, Stavropol, 355035 Russia
| | - Oleg P. Demidov
- North Caucasus Federal University, 1a Pushkina St, Stavropol, 355017 Russia
| | - Ivan V. Borovlev
- North Caucasus Federal University, 1a Pushkina St, Stavropol, 355017 Russia
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20
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Ma Y, Iida K, Nagasawa K. Topologies of G-quadruplex: Biological functions and regulation by ligands. Biochem Biophys Res Commun 2020; 531:3-17. [PMID: 31948752 DOI: 10.1016/j.bbrc.2019.12.103] [Citation(s) in RCA: 55] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2019] [Revised: 12/20/2019] [Accepted: 12/28/2019] [Indexed: 01/06/2023]
Abstract
G-Quadruplex (G4) is one of the higher-order structures occurring in guanine-rich sequences of nucleic acids, and plays critical roles in biological processes. The G4-forming sequences can generate three kinds of topologies, i.e., parallel, anti-parallel, and hybrid, and these polymorphic structures have an important influence on G4-related biological functions. In this review, we highlight variety of structures generated by G4s containing various sequences and under diverse conditions. We also discuss the G4 ligands which induce specific topologies and/or conversion between different topologies.
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Affiliation(s)
- Yue Ma
- Institute of Global Innovation Research, Tokyo University of Agriculture and Technology, Japan.
| | - Keisuke Iida
- Department of Chemistry, Chiba University, Japan
| | - Kazuo Nagasawa
- Department of Biotechnology and Life Science, Tokyo University of Agriculture and Technology, Japan.
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21
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Kaneyoshi S, Zou T, Ozaki S, Takeuchi R, Udou A, Nakahara T, Fujimoto K, Fujii S, Sato S, Takenaka S. Cyclic Naphthalene Diimide with a Ferrocene Moiety as a Redox-Active Tetraplex-DNA Ligand. Chemistry 2019; 26:139-142. [PMID: 31680317 DOI: 10.1002/chem.201903883] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2019] [Revised: 10/27/2019] [Indexed: 12/31/2022]
Abstract
Cyclic naphthalene diimides (cNDIs), with a ferrocene moiety (cFNDs) and different linker lengths between the ferrocene and cNDI moieties, were designed and synthesized as redox-active, tetraplex-DNA ligands. Intramolecular stacking was observed between ferrocene and the NDI planes, which could affect the binding properties for G-quadruplexes. Interestingly, the circular dichroism spectrum of one of these compounds clearly shows new Cotton effects around 320-380 and 240 nm, which can be considered a direct evidence of intramolecular stacking of ferrocene and the NDI. Regarding recognition of hybrid G-quadruplexes, the less rigid structures (longer linkers) show higher binding affinity (106 m-1 order of magnitude). All new compounds show higher selectivity for G4 during electrochemical detection than noncyclic FND derivatives, which further identifies the redox-active potentiality of the cFNDs. Two of the three compounds tested even show preferential inhibition of cell growth in cancer cells over normal cells in a low concentration range, highlighting the potential for bioapplications of these cFNDs.
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Affiliation(s)
- Shuma Kaneyoshi
- Department of Applied Chemistry, Kyushu Institute of Technology, Fukuoka, 804-8550, Japan
| | - Tingting Zou
- Department of Applied Chemistry, Kyushu Institute of Technology, Fukuoka, 804-8550, Japan.,Research Center for Bio-microsensing Technology, Kyushu Institute of Technology, Fukuoka, 804-8550, Japan
| | - Shunsuke Ozaki
- Department of Applied Chemistry, Kyushu Institute of Technology, Fukuoka, 804-8550, Japan
| | - Ryusuke Takeuchi
- Department of Applied Chemistry, Kyushu Institute of Technology, Fukuoka, 804-8550, Japan
| | - Ayano Udou
- Department of Applied Chemistry, Kyushu Institute of Technology, Fukuoka, 804-8550, Japan
| | - Takumi Nakahara
- Department of Applied Chemistry, Kyushu Institute of Technology, Fukuoka, 804-8550, Japan
| | - Kazuhisa Fujimoto
- Department of Applied Chemistry and Biochemistry, Kyushu Sangyo University, Fukuoka, 813-8503, Japan
| | - Satoshi Fujii
- Department of Bioscience and Bioinformatics, Kyushu Institute of Technology, Fukuoka, 820-8502, Japan
| | - Shinobu Sato
- Department of Applied Chemistry, Kyushu Institute of Technology, Fukuoka, 804-8550, Japan.,Research Center for Bio-microsensing Technology, Kyushu Institute of Technology, Fukuoka, 804-8550, Japan
| | - Shigeori Takenaka
- Department of Applied Chemistry, Kyushu Institute of Technology, Fukuoka, 804-8550, Japan.,Research Center for Bio-microsensing Technology, Kyushu Institute of Technology, Fukuoka, 804-8550, Japan
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22
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Dhamodharan V, Pradeepkumar PI. Specific Recognition of Promoter G-Quadruplex DNAs by Small Molecule Ligands and Light-up Probes. ACS Chem Biol 2019; 14:2102-2114. [PMID: 31532996 DOI: 10.1021/acschembio.9b00475] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
G-Quadruplexes (G4s) are four-stranded nucleic acid structures whose underlying G-rich sequences are present across the chromosome and transcriptome. These highly structured elements are known to regulate many key biological functions such as replication, transcription, translation, and genomic stability, thereby providing an additional layer of gene regulation. G4s are structurally dynamic and diverse, and they can fold into numerous topologies. They are potential targets for small molecules, which can modulate their functions. To this end, myriad classes of small molecules have been developed and studied for their ability to bind and stabilize these unique structures. Though many of them can selectively target G4s over duplex DNA, only a few of them can distinguish one G4 topology from others. Design and development of G4-specific ligands are challenging owing to the subtle structural variations among G4 structures. However, screening assays and computational methods have identified a few classes of ligands that preferentially or specifically target the G4 topology of interest over others. This review focuses on the small molecules and fluorescent probes that specifically target human promoter G4s associated with oncogenes. Targeting promoter G4s could circumvent the issues such as undruggability and development of drug resistance associated with the protein targets. The ligands discussed here highlight that development of G4-specific ligands is an achievable goal in spite of the limited structural data available. The future goal is to pursue the development of G4-specific ligands endowed with drug-like properties for G4-based therapeutics and diagnostics.
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Affiliation(s)
- V. Dhamodharan
- Department of Chemistry, Indian Institute of Technology Bombay, Mumbai 400076, India
- Okinawa Institute of Science and Technology Graduate University, Okinawa 9040495, Japan
| | - P. I. Pradeepkumar
- Department of Chemistry, Indian Institute of Technology Bombay, Mumbai 400076, India
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23
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Sato S, Kajima A, Hamanaka H, Takenaka S. Naphthalene diimide carrying four ferrocenyl substitutes as an electrochemical indicator of tetraplex DNA aiming at cancer diagnosis. J Organomet Chem 2019. [DOI: 10.1016/j.jorganchem.2019.06.028] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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24
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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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25
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Naphthalene Diimides as Multimodal G-Quadruplex-Selective Ligands. Molecules 2019; 24:molecules24030426. [PMID: 30682828 PMCID: PMC6384834 DOI: 10.3390/molecules24030426] [Citation(s) in RCA: 54] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2018] [Revised: 01/11/2019] [Accepted: 01/22/2019] [Indexed: 02/03/2023] Open
Abstract
G-quadruplexes are four-stranded nucleic acids structures that can form in guanine-rich sequences. Following the observation that G-quadruplexes are particularly abundant in genomic regions related to cancer, such as telomeres and oncogenes promoters, several G-quadruplex-binding molecules have been developed for therapeutic purposes. Among them, naphthalene diimide derivatives have reported versatility, consistent selectivity and high affinity toward the G-quadruplex structures. In this review, we present the chemical features, synthesis and peculiar optoelectronic properties (absorption, emission, redox) that make naphtalene diimides so versatile for biomedical applications. We present the latest developments on naphthalene diimides as G-quadruplex ligands, focusing on their ability to bind G-quadruplexes at telomeres and oncogene promoters with consequent anticancer activity. Their different binding modes (reversible versus irreversible/covalent) towards G-quadruplexes and their additional use as antimicrobial agents are also presented and discussed.
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26
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Nadai M, Doria F, Scalabrin M, Pirota V, Grande V, Bergamaschi G, Amendola V, Winnerdy FR, Phan AT, Richter SN, Freccero M. A Catalytic and Selective Scissoring Molecular Tool for Quadruplex Nucleic Acids. J Am Chem Soc 2018; 140:14528-14532. [PMID: 30351011 PMCID: PMC6242190 DOI: 10.1021/jacs.8b05337] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
A copper complex embedded in the structure of a water-soluble naphthalene diimide has been designed to bind and cleave G-quadruplex DNA. We describe the properties of this ligand, including its catalytic activity in the generation of ROS. FRET melting, CD, NMR, gel sequencing, and mass spectrometry experiments highlight a unique and unexpected selectivity in cleaving G-quadruplex sequences. This selectivity relies both on the binding affinity and structural features of the targeted G-quadruplexes.
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Affiliation(s)
- Matteo Nadai
- Department of Molecular Medicine , University of Padua , via Gabelli 63 , 35121 Padua , Italy
| | - Filippo Doria
- Department of Chemistry , University of Pavia , V. le Taramelli 10 , 27100 Pavia , Italy
| | - Matteo Scalabrin
- Department of Molecular Medicine , University of Padua , via Gabelli 63 , 35121 Padua , Italy
| | - Valentina Pirota
- Department of Chemistry , University of Pavia , V. le Taramelli 10 , 27100 Pavia , Italy
| | - Vincenzo Grande
- Department of Chemistry , University of Pavia , V. le Taramelli 10 , 27100 Pavia , Italy
| | - Greta Bergamaschi
- Department of Chemistry , University of Pavia , V. le Taramelli 10 , 27100 Pavia , Italy
| | - Valeria Amendola
- Department of Chemistry , University of Pavia , V. le Taramelli 10 , 27100 Pavia , Italy
| | - Fernaldo Richtia Winnerdy
- School of Physical and Mathematical Sciences , Nanyang Technological University , Singapore 637371 , Singapore
| | - Anh Tuân Phan
- School of Physical and Mathematical Sciences , Nanyang Technological University , Singapore 637371 , Singapore
| | - Sara N Richter
- Department of Molecular Medicine , University of Padua , via Gabelli 63 , 35121 Padua , Italy
| | - Mauro Freccero
- Department of Chemistry , University of Pavia , V. le Taramelli 10 , 27100 Pavia , Italy
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27
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Monsen RC, Trent JO. G-quadruplex virtual drug screening: A review. Biochimie 2018; 152:134-148. [PMID: 29966734 PMCID: PMC6134840 DOI: 10.1016/j.biochi.2018.06.024] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2018] [Accepted: 06/28/2018] [Indexed: 12/18/2022]
Abstract
Over the past two decades biologists and bioinformaticians have unearthed substantial evidence supporting a role for G-quadruplexes as important mediators of biological processes. This includes telomere damage signaling, transcriptional activity, and splicing. Both their structural heterogeneity and their abundance in oncogene promoters makes them ideal targets for drug discovery. Currently, there are hundreds of deposited DNA and RNA quadruplex atomic structures which have allowed researchers to begin using in silico drug screening approaches to develop novel stabilizing ligands. Here we provide a review of the past decade of G-quadruplex virtual drug discovery approaches and campaigns. With this we introduce relevant virtual screening platforms followed by a discussion of best practices to assist future G4 VS campaigns.
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Affiliation(s)
- Robert C Monsen
- Department of Biochemistry and Molecular Biology, University of Louisville, Louisville, KY, 40206, USA
| | - John O Trent
- James Graham Brown Cancer Center, University of Louisville, Louisville, KY, 40206, USA; Department of Biochemistry and Molecular Biology, University of Louisville, Louisville, KY, 40206, USA; Department of Medicine, University of Louisville, Louisville, KY, 40206, USA.
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28
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Marchetti C, Zyner KG, Ohnmacht SA, Robson M, Haider SM, Morton JP, Marsico G, Vo T, Laughlin-Toth S, Ahmed AA, Di Vita G, Pazitna I, Gunaratnam M, Besser RJ, Andrade ACG, Diocou S, Pike JA, Tannahill D, Pedley RB, Evans TRJ, Wilson WD, Balasubramanian S, Neidle S. Targeting Multiple Effector Pathways in Pancreatic Ductal Adenocarcinoma with a G-Quadruplex-Binding Small Molecule. J Med Chem 2018; 61:2500-2517. [PMID: 29356532 PMCID: PMC5867665 DOI: 10.1021/acs.jmedchem.7b01781] [Citation(s) in RCA: 104] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2017] [Indexed: 12/11/2022]
Abstract
Human pancreatic ductal adenocarcinoma (PDAC) involves the dysregulation of multiple signaling pathways. A novel approach to the treatment of PDAC is described, involving the targeting of cancer genes in PDAC pathways having over-representation of G-quadruplexes, using the trisubstituted naphthalene diimide quadruplex-binding compound 2,7-bis(3-morpholinopropyl)-4-((2-(pyrrolidin-1-yl)ethyl)amino)benzo[ lmn][3,8]phenanthroline-1,3,6,8(2 H,7 H)-tetraone (CM03). This compound has been designed by computer modeling, is a potent inhibitor of cell growth in PDAC cell lines, and has anticancer activity in PDAC models, with a superior profile compared to gemcitabine, a commonly used therapy. Whole-transcriptome RNA-seq methodology has been used to analyze the effects of this quadruplex-binding small molecule on global gene expression. This has revealed the down-regulation of a large number of genes, rich in putative quadruplex elements and involved in essential pathways of PDAC survival, metastasis, and drug resistance. The changes produced by CM03 represent a global response to the complexity of human PDAC and may be applicable to other currently hard-to-treat cancers.
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Affiliation(s)
- Chiara Marchetti
- UCL
School of Pharmacy, University College London, 29-39 Brunswick Square, London WC1N 1AX, U.K.
| | - Katherine G. Zyner
- Cancer
Research UK, Cambridge Research Institute, Li Ka Shing Centre, Robinson Way, Cambridge CB2 0RE, U.K.
| | - Stephan A. Ohnmacht
- UCL
School of Pharmacy, University College London, 29-39 Brunswick Square, London WC1N 1AX, U.K.
| | - Mathew Robson
- Cancer
Research UK Cancer Centre, UCL Cancer Institute, University College London, London WC1E 6BT, U.K.
| | - Shozeb M. Haider
- UCL
School of Pharmacy, University College London, 29-39 Brunswick Square, London WC1N 1AX, U.K.
| | - Jennifer P. Morton
- Cancer
Research UK, Beatson Institute, Garscube Estate, Switchback Road, Glasgow G61 1BD U.K.
- Institute
of Cancer Sciences. University of Glasgow, Glasgow G12 8QQ, U.K.
| | - Giovanni Marsico
- Cancer
Research UK, Cambridge Research Institute, Li Ka Shing Centre, Robinson Way, Cambridge CB2 0RE, U.K.
| | - Tam Vo
- Department
of Chemistry and Center for Biotechnology and Drug Design, Georgia State University, Atlanta, Georgia 30303-3083, United States
| | - Sarah Laughlin-Toth
- Department
of Chemistry and Center for Biotechnology and Drug Design, Georgia State University, Atlanta, Georgia 30303-3083, United States
| | - Ahmed A. Ahmed
- UCL
School of Pharmacy, University College London, 29-39 Brunswick Square, London WC1N 1AX, U.K.
| | - Gloria Di Vita
- UCL
School of Pharmacy, University College London, 29-39 Brunswick Square, London WC1N 1AX, U.K.
| | - Ingrida Pazitna
- UCL
School of Pharmacy, University College London, 29-39 Brunswick Square, London WC1N 1AX, U.K.
| | - Mekala Gunaratnam
- UCL
School of Pharmacy, University College London, 29-39 Brunswick Square, London WC1N 1AX, U.K.
| | - Rachael J. Besser
- UCL
School of Pharmacy, University College London, 29-39 Brunswick Square, London WC1N 1AX, U.K.
| | - Ana C. G. Andrade
- UCL
School of Pharmacy, University College London, 29-39 Brunswick Square, London WC1N 1AX, U.K.
| | - Seckou Diocou
- UCL
Cancer Institute, University College London, London WC1E 6BT, U.K.
| | - Jeremy A. Pike
- Cancer
Research UK, Cambridge Research Institute, Li Ka Shing Centre, Robinson Way, Cambridge CB2 0RE, U.K.
| | - David Tannahill
- Cancer
Research UK, Cambridge Research Institute, Li Ka Shing Centre, Robinson Way, Cambridge CB2 0RE, U.K.
| | - R. Barbara Pedley
- UCL
Cancer Institute, University College London, London WC1E 6BT, U.K.
| | - T. R. Jeffry Evans
- Cancer
Research UK, Beatson Institute, Garscube Estate, Switchback Road, Glasgow G61 1BD U.K.
- Institute
of Cancer Sciences. University of Glasgow, Glasgow G12 8QQ, U.K.
| | - W. David Wilson
- Department
of Chemistry and Center for Biotechnology and Drug Design, Georgia State University, Atlanta, Georgia 30303-3083, United States
| | - Shankar Balasubramanian
- Cancer
Research UK, Cambridge Research Institute, Li Ka Shing Centre, Robinson Way, Cambridge CB2 0RE, U.K.
- Department
of Chemistry, University of Cambridge, Cambridge CB2 1EW, U.K.
- The
School of Clinical Medicine, University
of Cambridge, Cambridge CB2 0SP, U.K.
| | - Stephen Neidle
- UCL
School of Pharmacy, University College London, 29-39 Brunswick Square, London WC1N 1AX, U.K.
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29
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Yadav K, Meka PNR, Sadhu S, Guggilapu SD, Kovvuri J, Kamal A, Srinivas R, Devayani P, Babu BN, Nagesh N. Telomerase Inhibition and Human Telomeric G-Quadruplex DNA Stabilization by a β-Carboline-Benzimidazole Derivative at Low Concentrations. Biochemistry 2017; 56:4392-4404. [PMID: 28737386 DOI: 10.1021/acs.biochem.7b00008] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Guanine rich regions in DNA, which can form highly stable secondary structures, namely, G-quadruplex or G4 DNA structures, affect DNA replication and transcription. Molecules that stabilize G4 DNA have become important in recent years. In this study, G4 DNA stabilization, inhibition of telomerase, and anticancer activity of synthetic β-carboline-benzimidazole derivatives (5a, 5d, 5h, and 5r) were studied. Among them, derivatives containing a 4-methoxyphenyl ring at C1 and a 6-methoxy-substituted benzimidazole at C3 (5a) were found to stabilize telomeric G-quadruplex DNA efficiently. The stoichiometry and interaction of a synthetic, β-carboline-benzimidazole derivative, namely, 3-(6-methoxy-1H-benzo[d]imidazol-2-yl)-1-(4-methoxyphenyl)-9H-pyrido[3,4-b]indole (5a), with human intermolecular G-quadruplex DNA at low concentrations were examined using electrospray ionization mass spectrometry. Spectroscopy techniques indicate that 5a may intercalate between the two stacks of G-quadruplex DNA. This model is supported by docking studies. When cancer cells are treated with 5a, the cell cycle arrest occurs at the sub-G1 phase. In addition, an apoptosis assay and fluorescence microscopy studies using cancer cells indicate that 5a can induce apoptosis. Results of biochemical assays such as the polymerase chain reaction stop assay and telomerase activity assay indicate that 5a has the potential to stabilize G-quadruplex DNA, and thereby, it may interfere with in vitro DNA synthesis and decrease telomerase activity. The results of this study reveal that the β-carboline-benzimidazole derivative (5a) is efficient in G-quadruplex DNA stabilization over double-stranded DNA, inhibits telomerase activity, and induces apoptosis in cancer cells.
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Affiliation(s)
- Kranthikumar Yadav
- Analytical Chemistry and Mass Spectrometry Division, CSIR-Indian Institute of Chemical Technology , Hyderabad 500007, India
| | - Penchala Narasimha Rao Meka
- Medicinal Chemistry and Pharmacology, CSIR-Indian Institute of Chemical Technology , Hyderabad 500007, India
| | - Sudeshna Sadhu
- CSIR-Centre for Cellular and Molecular Biology , Hyderabad 500007, India
| | - Sravanthi Devi Guggilapu
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research (NIPER) , Hyderabad 500037, India
| | - Jeshma Kovvuri
- Medicinal Chemistry and Pharmacology, CSIR-Indian Institute of Chemical Technology , Hyderabad 500007, India
| | - Ahmed Kamal
- Medicinal Chemistry and Pharmacology, CSIR-Indian Institute of Chemical Technology , Hyderabad 500007, India.,Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research (NIPER) , Hyderabad 500037, India
| | - Ragampeta Srinivas
- Analytical Chemistry and Mass Spectrometry Division, CSIR-Indian Institute of Chemical Technology , Hyderabad 500007, India
| | - Panuganti Devayani
- CSIR-Centre for Cellular and Molecular Biology , Hyderabad 500007, India
| | - Bathini Nagendra Babu
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research (NIPER) , Hyderabad 500037, India
| | - Narayana Nagesh
- CSIR-Centre for Cellular and Molecular Biology , Hyderabad 500007, India
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30
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Răsădean DM, Sheng B, Dash J, Pantoş GD. Amino-Acid-Derived Naphthalenediimides as Versatile G-Quadruplex Binders. Chemistry 2017; 23:8491-8499. [DOI: 10.1002/chem.201700957] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2017] [Indexed: 01/30/2023]
Affiliation(s)
- Dora M. Răsădean
- Department of Chemistry; University of Bath, Claverton Down; Bath BA2 7AY UK
| | - Bin Sheng
- Department of Chemistry; University of Bath, Claverton Down; Bath BA2 7AY UK
| | - Jyotirmayee Dash
- Department of Organic Chemistry; Indian Association for the Cultivation of Science; 2A & @B Raja S C Mullick Road Kolkata 700032 India
| | - G. Dan Pantoş
- Department of Chemistry; University of Bath, Claverton Down; Bath BA2 7AY UK
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31
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Sur S, Tiwari V, Sinha D, Kamran MZ, Dubey KD, Suresh Kumar G, Tandon V. Naphthalenediimide-Linked Bisbenzimidazole Derivatives as Telomeric G-Quadruplex-Stabilizing Ligands with Improved Anticancer Activity. ACS OMEGA 2017; 2:966-980. [PMID: 30023623 PMCID: PMC6044781 DOI: 10.1021/acsomega.6b00523] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/19/2016] [Accepted: 02/28/2017] [Indexed: 05/22/2023]
Abstract
Human telomeric G-quadruplex DNA stabilization has emerged as an exciting novel approach for anticancer drug development. In the present study, we have designed and synthesized three C2-symmetric bisubstituted bisbenzimidazole naphthalenediimide (NDI) ligands, ALI-C3 , BBZ-ARO, and BBZ-AROCH2 , which stabilize human telomeric G-quadruplex DNA with high affinity. Herein, we have studied the binding affinities and thermodynamic contributions of each of these molecules with G-quadruplex DNA and compared the same to those of the parent NDI analogue, BMSG-SH-3. Results of fluorescence resonance energy transfer and surface plasmon resonance demonstrate that these ligands have a higher affinity for G4-DNA over duplex DNA and induce the formation of a G-quadruplex. The binding equilibrium constants obtained from the microcalorimetry studies of BBZ-ARO, ALI-C3 , and BBZ-AROCH2 were 8.47, 6.35, and 3.41 μM, respectively, with h-telo 22-mer quadruplex. These showed 10 and 100 times lower binding affinity with h-telo 12-mer and duplex DNA quadruplexes, respectively. Analysis of the thermodynamic parameters obtained from the microcalorimetry study suggests that interactions were most favorable for BBZ-ARO among all of the synthesized compounds. The ΔGfree obtained from molecular mechanics Poisson-Boltzmann surface area calculations of molecular dynamics (MD) simulation studies suggest that BBZ-ARO interacted strongly with G4-DNA. MD simulation results showed the highest hydrogen bond occupancy and van der Waals interactions were between the side chains of BBZ-ARO and the DNA grooves. A significant inhibition of telomerase activity (IC50 = 4.56 μM) and induced apoptosis in cancer cell lines by BBZ-ARO suggest that this molecule has the potential to be developed as an anticancer agent.
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Affiliation(s)
- Souvik Sur
- Chemical
Biology Laboratory, Department of Chemistry, University of Delhi, Delhi 110007, India
| | - Vinod Tiwari
- Chemical
Biology Laboratory, Department of Chemistry, University of Delhi, Delhi 110007, India
| | - Devapriya Sinha
- Chemical
Biology Laboratory, Department of Chemistry, University of Delhi, Delhi 110007, India
| | - Mohammad Zahid Kamran
- Special
Center for Molecular Medicine, Jawaharlal
Nehru University, New Delhi 110067, India
| | | | - Gopinatha Suresh Kumar
- Biophysical
Chemistry Laboratory, Chemistry Division, CSIR-Indian Institute of Chemical Biology, Kolkata 700032, India
| | - Vibha Tandon
- Chemical
Biology Laboratory, Department of Chemistry, University of Delhi, Delhi 110007, India
- Special
Center for Molecular Medicine, Jawaharlal
Nehru University, New Delhi 110067, India
- E-mail: , . Phone: 91-11-26741640; 91-11-26708783
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32
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Street STG, Chin DN, Hollingworth GJ, Berry M, Morales JC, Galan MC. Divalent Naphthalene Diimide Ligands Display High Selectivity for the Human Telomeric G-quadruplex in K + Buffer. Chemistry 2017; 23:6953-6958. [PMID: 28257554 PMCID: PMC5485019 DOI: 10.1002/chem.201700140] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2017] [Indexed: 01/09/2023]
Abstract
Selective G‐quadruplex ligands offer great promise for the development of anti‐cancer therapies. A novel series of divalent cationic naphthalene diimide ligands that selectively bind to the hybrid form of the human telomeric G‐quadruplex in K+ buffer are described herein. We demonstrate that an imidazolium‐bearing mannoside‐conjugate is the most selective ligand to date for this quadruplex against several other quadruplex and duplex structures. We also show that a similarly selective methylpiperazine‐bearing ligand was more toxic to HeLa cancer cells than doxorubicin, whilst exhibiting three times less toxicity towards fetal lung fibroblasts WI‐38.
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Affiliation(s)
- Steven T G Street
- School of Chemistry, University of Bristol, Cantock's Close, Bristol, BS8 1TS, UK
| | - Donovan N Chin
- Novartis Institutes for Biomedical Research, 250 Massachusetts Ave., Cambridge, Massachusetts, 02139, USA
| | | | - Monica Berry
- School of Physics, University of Bristol, HH Wills Physics Laboratory, Bristol, BS8 1TL, UK
| | - Juan C Morales
- Instituto de Parasitología y Biomedicina, Avenida del Conocimiento, s/n, 18016, Armilla, Granada, Spain
| | - M Carmen Galan
- School of Chemistry, University of Bristol, Cantock's Close, Bristol, BS8 1TS, UK
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33
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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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34
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Ruan TL, Davis SJ, Powell BM, Harbeck CP, Habdas J, Habdas P, Yatsunyk LA. Lowering the overall charge on TMPyP4 improves its selectivity for G-quadruplex DNA. Biochimie 2017; 132:121-130. [DOI: 10.1016/j.biochi.2016.11.003] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2016] [Accepted: 11/07/2016] [Indexed: 12/24/2022]
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35
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Doria F, Nadai M, Costa G, Sattin G, Gallati C, Bergamaschi G, Moraca F, Alcaro S, Freccero M, Richter SN. Extended Naphthalene Diimides with Donor/Acceptor Hydrogen-Bonding Properties Targeting G-Quadruplex Nucleic Acids. European J Org Chem 2016. [DOI: 10.1002/ejoc.201600757] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Filippo Doria
- Department of Chemistry; University of Pavia; v.le Taramelli 10 27100 Pavia Italy
| | - Matteo Nadai
- Department of Molecular Medicine; University of Padua; via Gabelli 63 35121 Padua Italy
| | - Giosuè Costa
- Dipartimento di Scienze della Salute Università degli Studi “Magna Graecia” di Catanzaro Campus “Salvatore Venuta”; Viale Europa 88100 Catanzaro Italy
| | - Giovanna Sattin
- Department of Molecular Medicine; University of Padua; via Gabelli 63 35121 Padua Italy
| | - Caroline Gallati
- Department of Chemistry; University of Pavia; v.le Taramelli 10 27100 Pavia Italy
| | - Greta Bergamaschi
- Department of Chemistry; University of Pavia; v.le Taramelli 10 27100 Pavia Italy
| | - Federica Moraca
- Dipartimento di Scienze della Salute Università degli Studi “Magna Graecia” di Catanzaro Campus “Salvatore Venuta”; Viale Europa 88100 Catanzaro Italy
| | - Stefano Alcaro
- Dipartimento di Scienze della Salute Università degli Studi “Magna Graecia” di Catanzaro Campus “Salvatore Venuta”; Viale Europa 88100 Catanzaro Italy
| | - Mauro Freccero
- Department of Chemistry; University of Pavia; v.le Taramelli 10 27100 Pavia Italy
| | - Sara N. Richter
- Department of Molecular Medicine; University of Padua; via Gabelli 63 35121 Padua Italy
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36
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Al Kobaisi M, Bhosale SV, Latham K, Raynor AM, Bhosale SV. Functional Naphthalene Diimides: Synthesis, Properties, and Applications. Chem Rev 2016; 116:11685-11796. [DOI: 10.1021/acs.chemrev.6b00160] [Citation(s) in RCA: 557] [Impact Index Per Article: 69.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Mohammad Al Kobaisi
- School
of Applied Sciences, RMIT University
, GPO Box 2476, Melbourne, Victoria
3001, Australia
| | - Sidhanath V. Bhosale
- Polymers
and Functional Materials Division, CSIR-Indian Institute of Chemical Technology
, Hyderabad, Telangana-500007, India
| | - Kay Latham
- School
of Applied Sciences, RMIT University
, GPO Box 2476, Melbourne, Victoria
3001, Australia
| | - Aaron M. Raynor
- School
of Applied Sciences, RMIT University
, GPO Box 2476, Melbourne, Victoria
3001, Australia
| | - Sheshanath V. Bhosale
- School
of Applied Sciences, RMIT University
, GPO Box 2476, Melbourne, Victoria
3001, Australia
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37
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Salvati E, Doria F, Manoli F, D'Angelo C, Biroccio A, Freccero M, Manet I. A bimodal fluorescent and photocytotoxic naphthalene diimide for theranostic applications. Org Biomol Chem 2016; 14:7238-49. [DOI: 10.1039/c6ob00987e] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We describe the bimodal activity of a water-soluble tetracationic naphthalene diimide as red light emitter for fluorescence imaging, including fluorescence-lifetime imaging, and singlet oxygen photosensitizer, inducing photocytotoxicity in cancer cells.
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Affiliation(s)
- Erica Salvati
- Oncogenomic and Epigenetic Unit
- Regina Elena National Cancer Institute
- 53 Rome
- Italy
| | - Filippo Doria
- Dipartimento di Chimica
- Università di Pavia
- 27100 Pavia
- Italy
| | - Francesco Manoli
- Istituto per la Sintesi Organica e la Fotoreattività
- Consiglio Nazionale delle Ricerche
- 40129 Bologna
- Italy
| | - Carmen D'Angelo
- Oncogenomic and Epigenetic Unit
- Regina Elena National Cancer Institute
- 53 Rome
- Italy
| | - Annamaria Biroccio
- Oncogenomic and Epigenetic Unit
- Regina Elena National Cancer Institute
- 53 Rome
- Italy
| | - Mauro Freccero
- Dipartimento di Chimica
- Università di Pavia
- 27100 Pavia
- Italy
| | - Ilse Manet
- Istituto per la Sintesi Organica e la Fotoreattività
- Consiglio Nazionale delle Ricerche
- 40129 Bologna
- Italy
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38
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Spinello A, Barone G, Grunenberg J. Molecular recognition of naphthalene diimide ligands by telomeric quadruplex-DNA: the importance of the protonation state and mediated hydrogen bonds. Phys Chem Chem Phys 2016; 18:2871-7. [DOI: 10.1039/c5cp05576h] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
How important are mediated hydrogen bonds in terms of molecular recognition? Compliance Constants (relaxed force constants) give the answer.
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Affiliation(s)
- A. Spinello
- Università di Palermo
- Dipartimento di Scienze e Tecnologie Biologiche
- Chimiche e Farmaceutiche
- Italy
- Istituto Euro-Mediterraneo di Scienza e Tecnologia (IEMEST)
| | - G. Barone
- Università di Palermo
- Dipartimento di Scienze e Tecnologie Biologiche
- Chimiche e Farmaceutiche
- Italy
- Istituto Euro-Mediterraneo di Scienza e Tecnologia (IEMEST)
| | - J. Grunenberg
- Technische Universität Braunschweig
- Institut für Organische Chemie
- Germany
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39
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Ang DL, Harper BWJ, Cubo L, Mendoza O, Vilar R, Aldrich-Wright J. Quadruplex DNA-Stabilising Dinuclear Platinum(II) Terpyridine Complexes with Flexible Linkers. Chemistry 2015; 22:2317-25. [PMID: 26670391 DOI: 10.1002/chem.201503663] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2015] [Indexed: 12/19/2022]
Abstract
Four dinuclear terpyridineplatinum(II) (Pt-terpy) complexes were investigated for interactions with G-quadruplex DNA (QDNA) and duplex DNA (dsDNA) by synchrotron radiation circular dichroism (SRCD), fluorescent intercalator displacement (FID) assays and fluorescence resonance energy transfer (FRET) melting studies. Additionally, computational docking studies were undertaken to provide insight into potential binding modes for these complexes. The complexes demonstrated the ability to increase the melting temperature of various QDNA motifs by up to 17 °C and maintain this in up to a 600-fold excess of dsDNA. This study demonstrates that dinuclear Pt-terpy complexes stabilise QDNA and have a high degree of selectivity for QDNA over dsDNA.
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Affiliation(s)
- Dale L Ang
- Nanoscale Organisation and Dynamics Group, School of Science and Health, Western Sydney University, Penrith, NSW 2751, Australia
| | - Benjamin W J Harper
- Nanoscale Organisation and Dynamics Group, School of Science and Health, Western Sydney University, Penrith, NSW 2751, Australia
| | - Leticia Cubo
- Department of Chemistry, Imperial College London, London, SW7 2AZ, UK
| | - Oscar Mendoza
- Department of Chemistry, Imperial College London, London, SW7 2AZ, UK
| | - Ramon Vilar
- Department of Chemistry, Imperial College London, London, SW7 2AZ, UK.,Institute of Chemical Biology, Imperial College London, London, SW7 2AZ, UK
| | - Janice Aldrich-Wright
- Nanoscale Organisation and Dynamics Group, School of Science and Health, Western Sydney University, Penrith, NSW 2751, Australia.
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40
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Abstract
The key step of carcinogenesis is the malignant transformation which is fundamentally a telomere biology dysfunction permitting cells to bypass the Hayflick limit and to divide indefinitely and uncontrollably. Thus all partners and structures involved in normal and abnormal telomere maintenance, protection and lengthening can be considered as potential anti-cancer therapeutic targets. In this Point of View we discuss, highlight and provide new perspectives from the current knowledge and understanding to position the different aspects of telomere biology and dysfunction as diagnostic, preventive and curative tools in the field of cancer.
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Affiliation(s)
- Philippe Rousseau
- a Bloomfield Center for Research in Aging, Lady Davis Institute for Medical Research, Jewish General Hospital ; Montréal , Québec , Canada
| | - Chantal Autexier
- a Bloomfield Center for Research in Aging, Lady Davis Institute for Medical Research, Jewish General Hospital ; Montréal , Québec , Canada.,b Division of Experimental Medicine, Department of Anatomy and Cell Biology, McGill University ; Montréal , Québec , Canada
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Tandon V. 124 Novel smart C2-symmetrical NDI derivatives as G-quadruplex stabilizing ligand with a potential to differentiate between topological structures. J Biomol Struct Dyn 2015. [DOI: 10.1080/07391102.2015.1032757] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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42
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Ohnmacht SA, Marchetti C, Gunaratnam M, Besser RJ, Haider SM, Di Vita G, Lowe HL, Mellinas-Gomez M, Diocou S, Robson M, Šponer J, Islam B, Barbara Pedley R, Hartley JA, Neidle S. A G-quadruplex-binding compound showing anti-tumour activity in an in vivo model for pancreatic cancer. Sci Rep 2015; 5:11385. [PMID: 26077929 PMCID: PMC4468576 DOI: 10.1038/srep11385] [Citation(s) in RCA: 86] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2015] [Accepted: 04/22/2015] [Indexed: 01/05/2023] Open
Abstract
We report here that a tetra-substituted naphthalene-diimide derivative (MM41) has significant in vivo anti-tumour activity against the MIA PaCa-2 pancreatic cancer xenograft model. IV administration with a twice-weekly 15 mg/kg dose produces ca 80% tumour growth decrease in a group of tumour-bearing animals. Two animals survived tumour-free after 279 days. High levels of MM41 are rapidly transported into cell nuclei and were found to accumulate in the tumour. MM41 is a quadruplex-interactive compound which binds strongly to the quadruplexes encoded in the promoter sequences of the BCL-2 and k-RAS genes, both of which are dis-regulated in many human pancreatic cancers. Levels of BCL-2 were reduced by ca 40% in tumours from MM41-treated animals relative to controls, consistent with BCL-2 being a target for MM41. Molecular modelling suggests that MM41 binds to a BCL-2 quadruplex in a manner resembling that previously observed in co-crystal structures with human telomeric quadruplexes. This supports the concept that MM41 (and by implication other quadruplex-targeting small molecules) can bind to quadruplex-forming promoter regions in a number of genes and down-regulate their transcription. We suggest that quadruplexes within those master genes that are up-regulated drivers for particular cancers, may be selective targets for compounds such as MM41.
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Affiliation(s)
| | - Chiara Marchetti
- UCL School of Pharmacy, University College London, London WC1N 1AX, UK
| | - Mekala Gunaratnam
- UCL School of Pharmacy, University College London, London WC1N 1AX, UK
| | - Rachael J Besser
- UCL School of Pharmacy, University College London, London WC1N 1AX, UK
| | - Shozeb M Haider
- UCL School of Pharmacy, University College London, London WC1N 1AX, UK
| | - Gloria Di Vita
- UCL School of Pharmacy, University College London, London WC1N 1AX, UK
| | - Helen L Lowe
- UCL Cancer Institute, University College London, London WC1E 6BT, UK
| | | | - Seckou Diocou
- UCL Cancer Institute, University College London, London WC1E 6BT, UK
| | - Mathew Robson
- UCL Cancer Institute, University College London, London WC1E 6BT, UK
| | - Jiri Šponer
- Central European Institute of Technology (CEITEC), Campus Bohunice, Kamenice 5, 625 00 Brno, Czech Republic
- Institute of Biophysics, Academy of Sciences of the Czech Republic, Kralovopolska 135, 612 65, Brno, Czech Republic
| | - Barira Islam
- Central European Institute of Technology (CEITEC), Campus Bohunice, Kamenice 5, 625 00 Brno, Czech Republic
| | - R Barbara Pedley
- UCL Cancer Institute, University College London, London WC1E 6BT, UK
| | - John A Hartley
- UCL Cancer Institute, University College London, London WC1E 6BT, UK
| | - Stephen Neidle
- UCL School of Pharmacy, University College London, London WC1N 1AX, UK
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43
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A Selective G-Quadruplex DNA-Stabilizing Ligand Based on a Cyclic Naphthalene Diimide Derivative. Molecules 2015; 20:10963-79. [PMID: 26076114 PMCID: PMC6272171 DOI: 10.3390/molecules200610963] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2015] [Revised: 05/28/2015] [Accepted: 06/08/2015] [Indexed: 02/02/2023] Open
Abstract
A cyclic naphthalene diimide (cyclic NDI, 1), carrying a benzene moiety as linker chain, was synthesized and its interaction with G-quadruplex DNAs of a-core and a-coreTT as a human telomeric DNA, c-kit and c-myc as DNA sequence at promoter region, or thrombin-binding aptamer (TBA) studied based on UV-VIS and circular dichroism (CD) spectroscopic techniques, thermal melting temperature measurement, and FRET-melting assay. The circular dichroism spectra showed that 1 induced the formation of different types of G-quadruplex DNA structure. Compound 1 bound to these G-quadruplexes with affinities in the range of 106–107 M−1 order and a 2:1 stoichiometry. Compound 1 showed 270-fold higher selectivity for a-core than dsDNA with a preferable a-core binding than a-coreTT, c-kit, c-myc and TBA in the presence of K+, which is supported by thermal melting studies. The FRET-melting assay also showed that 1 bound preferentially to human telomeric DNA. Compound 1 showed potent inhibition against telomerase activity with an IC50 value of 0.9 μM and preferable binding to G-quadruplexes DNA than our previously published cyclic NDI derivative 3 carrying a benzene moiety as longer linker chain.
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44
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Islam MM, Fujii S, Sato S, Okauchi T, Takenaka S. Thermodynamics and kinetic studies in the binding interaction of cyclic naphthalene diimide derivatives with double stranded DNAs. Bioorg Med Chem 2015; 23:4769-4776. [PMID: 26081762 DOI: 10.1016/j.bmc.2015.05.046] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2015] [Revised: 05/22/2015] [Accepted: 05/24/2015] [Indexed: 10/23/2022]
Abstract
Previously, we reported our investigations of the interaction between a cyclic naphthalene diimide derivative (cNDI 1) and double stranded DNA (dsDNA) (Bioorg. Med. Chem.2014, 22, 2593). Here, we report the synthesis of the novel cNDI 2, which has shorter linker chains than cNDI 1. We performed comparative investigations of the interactions of both cNDI 1 and cNDI 2 with different types of dsDNA, including analysis of their thermodynamics and kinetics. Interactions between the cNDIs and calf thymus DNA (CT-DNA), poly[d(A-T)]2, or poly[d(G-C)]2 were explored by physicochemical and biochemical methods, including UV-Vis spectroscopy, circular dichroism (CD) spectroscopy, stopped-flow kinetics, and a topoisomerase I assay. Upon addition of cNDIs to CT-DNA, the existence of an induced CD signal at approximately the wavelength of the naphthalene diimide chromophore and unwinding of the DNA duplex, as detected by the topoisomerase I assay, revealed that cNDIs bound to the DNA duplex. As indicated by the steric constraint in the formation of the complex, bis-threading intercalation was the more favorable binding mode. UV-Vis spectroscopic titration of the cNDIs with DNA duplexes showed affinities on the order of 10(5)-10(6)M(-1), with a stoichiometry of one cNDI molecule per four DNA base pairs. Thermodynamic parameters (ΔG, ΔH, and ΔS) based on the van't Hoff equation indicated that exothermic and entropy-dependent hydrophobic interactions played a major role in the reaction. Stopped-flow association and dissociation analysis showed that cNDI interactions with poly[d(G-C)]2 were more stable and had a slower dissociation rate than their interactions with poly[d(A-T)]2 and CT-DNA. Measurement of ionic strength indicated that electrostatic attraction is also an important component of the interaction between cNDIs and CT-DNA. Because of its longer linker chain, cNDI 1 showed higher binding selectivity, a more entropically favorable interaction, and much slower dissociation from dsDNA than cNDI 2.
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Affiliation(s)
- Md Monirul Islam
- Department of Applied Chemistry, Kyushu Institute of Technology, Kitakyushu, Fukuoka 804-8550, Japan
| | - Satoshi Fujii
- Department of Bioscience and Bioinformatics, Kyushu Institute of Technology, Iizuka, Fukuoka 820-8502, Japan
| | - Shinobu Sato
- Department of Applied Chemistry, Kyushu Institute of Technology, Kitakyushu, Fukuoka 804-8550, Japan
| | - Tatsuo Okauchi
- Department of Applied Chemistry, Kyushu Institute of Technology, Kitakyushu, Fukuoka 804-8550, Japan
| | - Shigeori Takenaka
- Department of Applied Chemistry, Kyushu Institute of Technology, Kitakyushu, Fukuoka 804-8550, Japan.
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45
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Panesar HK, Solano J, Minehan TG. Synthesis and DNA binding profile of N-mono- and N,N'-disubstituted indolo[3,2-b]carbazoles. Org Biomol Chem 2015; 13:2879-83. [PMID: 25633133 PMCID: PMC4339310 DOI: 10.1039/c4ob02566k] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A series of N-monosubstituted and N,N'-disubstituted derivatives of the indolo[3,2-b]carbazole chromophore have been prepared, and their binding affinity for duplex DNA has been evaluated by ultraviolet and fluorescence spectroscopies. It has been found that indolo[3,2-b]carbazoles bearing basic N-alkyl substituents are intercalators that bind DNA with affinities in the micromolar and submicromolar range and a preference for associating with sequences of mixed composition and purine-pyrimidine steps.
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Affiliation(s)
- Harmanpreet Kaur Panesar
- Department of Chemistry and Biochemistry, California State University, Northridge, 18111 Nordhoff Street, Northridge, CA 91330, USA.
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46
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Ilyinsky NS, Varizhuk AM, Beniaminov AD, Puzanov MA, Shchyolkina AK, Kaluzhny DN. G-quadruplex ligands: Mechanisms of anticancer action and target binding. Mol Biol 2014. [DOI: 10.1134/s0026893314060077] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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47
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NADAI MATTEO, CIMINO-REALE GRAZIELLA, SATTIN GIOVANNA, DORIA FILIPPO, BUTOVSKAYA ELENA, ZAFFARONI NADIA, FRECCERO MAURO, PALUMBO MANLIO, RICHTER SARAN, FOLINI MARCO. Assessment of gene promoter G-quadruplex binding and modulation by a naphthalene diimide derivative in tumor cells. Int J Oncol 2014; 46:369-80. [DOI: 10.3892/ijo.2014.2723] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2014] [Accepted: 09/03/2014] [Indexed: 11/05/2022] Open
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48
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DNA binders in clinical trials and chemotherapy. Bioorg Med Chem 2014; 22:4506-21. [DOI: 10.1016/j.bmc.2014.05.030] [Citation(s) in RCA: 79] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2014] [Revised: 05/09/2014] [Accepted: 05/14/2014] [Indexed: 01/09/2023]
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49
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Zhang PZ, Yang HL, Li CC, Xia ZC, Wang XM, Wei H, Rong RX, Cao ZR, Wang KR, Chen H, Li XL. Synthesis of novel, azasugar-modified anthraquinone derivatives and their cytotoxicity. CHINESE CHEM LETT 2014. [DOI: 10.1016/j.cclet.2014.05.029] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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50
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Small-molecule quadruplex-targeted drug discovery. Bioorg Med Chem Lett 2014; 24:2602-12. [DOI: 10.1016/j.bmcl.2014.04.029] [Citation(s) in RCA: 149] [Impact Index Per Article: 14.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2014] [Revised: 04/06/2014] [Accepted: 04/08/2014] [Indexed: 01/24/2023]
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