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Liu W, Zhu BC, Liu LY, Xia XY, Jang J, Dickerhoff J, Yang D, Mao ZW. Solution structures and effects of a platinum compound successively bound MYC G-quadruplex. Nucleic Acids Res 2024:gkae649. [PMID: 39077944 DOI: 10.1093/nar/gkae649] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2024] [Revised: 07/08/2024] [Accepted: 07/24/2024] [Indexed: 07/31/2024] Open
Abstract
G-quadruplex (G4) structures play integral roles in modulating biological functions and can be regulated by small molecules. The MYC gene is critical during tumor initiation and malignant progression, in which G4 acts as an important modulation motif. Herein, we reported the MYC promoter G4 recognized by a platinum(II) compound Pt-phen. Two Pt-phen-MYC G4 complex structures in 5 mM K+ were determined by NMR. The Pt-phen first strongly binds the 3'-end of MYC G4 to form a 1:1 3'-end binding complex and then binds 5'-end to form a 2:1 complex with more Pt-phen. In the complexes, the Pt-phen molecules are well-defined and stack over four bases at the G-tetrad for a highly extensive π-π interaction, with the Pt atom aligning with the center of the G-tetrad. The flanking residues were observed to rearrange and cover on top of Pt-phen to stabilize the whole complex. We further demonstrated that Pt-phen targets G4 DNA in living cells and represses MYC gene expression in cancer cells. Our work elucidated the structural basis of ligand binding to MYC promoter G4. The platinum compound bound G4 includes multiple complexes formation, providing insights into the design of metal ligands targeting oncogene G4 DNA.
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Affiliation(s)
- Wenting Liu
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, State Key Laboratory of Anti-Infective Drug Discovery and Development, IGCME, GBRCE for Functional Molecular Engineering, School of Chemistry, Sun Yat-Sen University, Guangzhou 510006, China
| | - Bo-Chen Zhu
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, State Key Laboratory of Anti-Infective Drug Discovery and Development, IGCME, GBRCE for Functional Molecular Engineering, School of Chemistry, Sun Yat-Sen University, Guangzhou 510006, China
| | - Liu-Yi Liu
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, State Key Laboratory of Anti-Infective Drug Discovery and Development, IGCME, GBRCE for Functional Molecular Engineering, School of Chemistry, Sun Yat-Sen University, Guangzhou 510006, China
| | - Xiao-Yu Xia
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, State Key Laboratory of Anti-Infective Drug Discovery and Development, IGCME, GBRCE for Functional Molecular Engineering, School of Chemistry, Sun Yat-Sen University, Guangzhou 510006, China
| | - Jinho Jang
- Department of Medicinal Chemistry and Molecular Pharmacology, College of Pharmacy, Purdue Center for Cancer Research, Department of Chemistry, and Purdue Institute for Drug Discovery, Purdue University, West Lafayette, IN 47907, USA
| | - Jonathan Dickerhoff
- Department of Medicinal Chemistry and Molecular Pharmacology, College of Pharmacy, Purdue Center for Cancer Research, Department of Chemistry, and Purdue Institute for Drug Discovery, Purdue University, West Lafayette, IN 47907, USA
| | - Danzhou Yang
- Department of Medicinal Chemistry and Molecular Pharmacology, College of Pharmacy, Purdue Center for Cancer Research, Department of Chemistry, and Purdue Institute for Drug Discovery, Purdue University, West Lafayette, IN 47907, USA
| | - Zong-Wan Mao
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, State Key Laboratory of Anti-Infective Drug Discovery and Development, IGCME, GBRCE for Functional Molecular Engineering, School of Chemistry, Sun Yat-Sen University, Guangzhou 510006, China
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2
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Xu D, Li Y, Yin S, Huang F. Strategies to address key challenges of metallacycle/metallacage-based supramolecular coordination complexes in biomedical applications. Chem Soc Rev 2024; 53:3167-3204. [PMID: 38385584 DOI: 10.1039/d3cs00926b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/23/2024]
Abstract
Owing to their capacity for dynamically linking two or more functional molecules, supramolecular coordination complexes (SCCs), exemplified by two-dimensional (2D) metallacycles and three-dimensional (3D) metallacages, have gained increasing significance in biomedical applications. However, their inherent hydrophobicity and self-assembly driven by heavy metal ions present common challenges in their applications. These challenges can be overcome by enhancing the aqueous solubility and in vivo circulation stability of SCCs, alongside minimizing their side effects during treatment. Addressing these challenges is crucial for advancing the fundamental research of SCCs and their subsequent clinical translation. In this review, drawing on extensive contemporary research, we offer a thorough and systematic analysis of the strategies employed by SCCs to surmount these prevalent yet pivotal obstacles. Additionally, we explore further potential challenges and prospects for the broader application of SCCs in the biomedical field.
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Affiliation(s)
- Dongdong Xu
- Key Laboratory of Organosilicon Chemistry and Materials Technology of Ministry of Education, College of Materials, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou 311121, P. R. China.
| | - Yang Li
- Key Laboratory of Organosilicon Chemistry and Materials Technology of Ministry of Education, College of Materials, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou 311121, P. R. China.
| | - Shouchun Yin
- Key Laboratory of Organosilicon Chemistry and Materials Technology of Ministry of Education, College of Materials, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou 311121, P. R. China.
| | - Feihe Huang
- Stoddart Institute of Molecular Science, Department of Chemistry, Zhejiang University, Hangzhou 310058, P. R. China.
- Zhejiang-Israel Joint Laboratory of Self-Assembling Functional Materials, ZJU-Hangzhou Global Scientific and Technological Innovation Center, Zhejiang University, Hangzhou, 311215, P. R. China
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3
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Zegers J, Peters M, Albada B. DNA G-quadruplex-stabilizing metal complexes as anticancer drugs. J Biol Inorg Chem 2023; 28:117-138. [PMID: 36456886 PMCID: PMC9981530 DOI: 10.1007/s00775-022-01973-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2022] [Accepted: 11/17/2022] [Indexed: 12/04/2022]
Abstract
Guanine quadruplexes (G4s) are important targets for cancer treatments as their stabilization has been associated with a reduction of telomere ends or a lower oncogene expression. Although less abundant than purely organic ligands, metal complexes have shown remarkable abilities to stabilize G4s, and a wide variety of techniques have been used to characterize the interaction between ligands and G4s. However, improper alignment between the large variety of experimental techniques and biological activities can lead to improper identification of top candidates, which hampers progress of this important class of G4 stabilizers. To address this, we first review the different techniques for their strengths and weaknesses to determine the interaction of the complexes with G4s, and provide a checklist to guide future developments towards comparable data. Then, we surveyed 74 metal-based ligands for G4s that have been characterized to the in vitro level. Of these complexes, we assessed which methods were used to characterize their G4-stabilizing capacity, their selectivity for G4s over double-stranded DNA (dsDNA), and how this correlated to bioactivity data. For the biological activity data, we compared activities of the G4-stabilizing metal complexes with that of cisplatin. Lastly, we formulated guidelines for future studies on G4-stabilizing metal complexes to further enable maturation of this field.
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Affiliation(s)
- Jaccoline Zegers
- grid.4818.50000 0001 0791 5666Laboratory of Organic Chemistry, Wageningen University and Research, Stippeneng 4, 6708 WE Wageningen, The Netherlands
| | - Maartje Peters
- grid.4818.50000 0001 0791 5666Laboratory of Organic Chemistry, Wageningen University and Research, Stippeneng 4, 6708 WE Wageningen, The Netherlands
| | - Bauke Albada
- Laboratory of Organic Chemistry, Wageningen University and Research, Stippeneng 4, 6708 WE, Wageningen, The Netherlands.
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4
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Shen Z, Zheng R, Yang H, Xing S, Jin X, Yan H, Zhu J, Mei Y, Lin F, Zheng X. G-quadruplex stabilizer Tetra-Pt(bpy) disrupts telomere maintenance and impairs FAK-mediated migration of telomerase-positive cells. Int J Biol Macromol 2022; 213:858-870. [PMID: 35697164 DOI: 10.1016/j.ijbiomac.2022.06.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2022] [Revised: 05/18/2022] [Accepted: 06/05/2022] [Indexed: 11/05/2022]
Abstract
G-quadruplex regulates a wide spectrum of biological processes, including telomere maintenance, DNA replication and transcription. The development of small molecules to selectively target G-quadruplex and their application remain hotspots in cancer therapy. Here, we explored the biological effect of G-quadruplexes stabilizer Tetra-Pt(bpy) in telomerase-positive cancer cells. Telomere maintenance was evaluated by telomerase repeat amplification protocol, chromosome orientation fluorescence in situ hybridization and telomere restriction fragment assays. We found that Tetra-Pt(bpy) accelerates telomere shortening through dual inhibition of telomerase activity and telomere sister chromatin exchanges mediated by telomeric G-quadruplexes. Consequently, Tetra-Pt(bpy)-treated cancer cells became enriched with extremely short telomeres and produced a strong telomeric DNA damage response following long-term treatment, leading to cell proliferation inhibition and senescence. Experimental evidence from RNA seq and cell migration-related assays showed that Tetra-Pt(bpy) decreased cell-matrix adhesion and inhibited the migration of non-senescent tumor cells. Mechanistically, Tetra-Pt(bpy) induced the formation of G-quadruplexes in focal adhesion kinase (FAK)-encoding gene PTK2, resulting in FAK transcription inhibition. Tetra-Pt(bpy) reduced xenograft tumor formation and inhibited tumor cell growth and migration in mice. This study further elucidates the function of G-quadruplexes in the human genome and reveals the potential of Tetra-Pt(bpy) as a novel chemotherapeutic agent for targeting telomerase-positive cancer cells.
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Affiliation(s)
- Zhe Shen
- Chemical Biology Research Center at School of Pharmaceutical Sciences, Wenzhou Medical University, 1210 University Town, Wenzhou 325035, Zhejiang, China
| | - Ruiling Zheng
- Chemical Biology Research Center at School of Pharmaceutical Sciences, Wenzhou Medical University, 1210 University Town, Wenzhou 325035, Zhejiang, China
| | - Huamao Yang
- Chemical Biology Research Center at School of Pharmaceutical Sciences, Wenzhou Medical University, 1210 University Town, Wenzhou 325035, Zhejiang, China
| | - Sunhui Xing
- Chemical Biology Research Center at School of Pharmaceutical Sciences, Wenzhou Medical University, 1210 University Town, Wenzhou 325035, Zhejiang, China
| | - Xiangxiang Jin
- Chemical Biology Research Center at School of Pharmaceutical Sciences, Wenzhou Medical University, 1210 University Town, Wenzhou 325035, Zhejiang, China
| | - Hao Yan
- Chemical Biology Research Center at School of Pharmaceutical Sciences, Wenzhou Medical University, 1210 University Town, Wenzhou 325035, Zhejiang, China
| | - Jufan Zhu
- Department of Gynecology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325000, Zhejiang, China
| | - Yanan Mei
- Chemical Biology Research Center at School of Pharmaceutical Sciences, Wenzhou Medical University, 1210 University Town, Wenzhou 325035, Zhejiang, China
| | - Feng Lin
- Department of Gynecology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325000, Zhejiang, China; Department of Gynecology, Key Laboratory of Clinical Laboratory Diagnosis and Translational Research of Zhejiang Province, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325000, Zhejiang, China.
| | - Xiaohui Zheng
- Chemical Biology Research Center at School of Pharmaceutical Sciences, Wenzhou Medical University, 1210 University Town, Wenzhou 325035, Zhejiang, China.
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Zhu J, Yan Z, Bošković F, Haynes CJE, Kieffer M, Greenfield JL, Wang J, Nitschke JR, Keyser UF. Fe II 4L 4 tetrahedron binds and aggregates DNA G-quadruplexes. Chem Sci 2021; 12:14564-14569. [PMID: 34881008 PMCID: PMC8580047 DOI: 10.1039/d1sc04430c] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2021] [Accepted: 10/05/2021] [Indexed: 12/25/2022] Open
Abstract
Since the discovery of the G-quadruplex (G4) structure in telomeres in 1980s, studies have established the role it plays in various biological processes. Here we report binding between DNA G4 and a self-assembled tetrahedral metal-organic cage 1 and consequent formation of aggregates, whereby the cage protects the DNA G4 from cleavage by S1 nuclease. We monitor DNA–cage interaction using fluorescence spectroscopy, firstly by quenching of a fluorescent label appended to the 5′ end of G4. Secondly, we detect the decrease in fluorescence of the G4-selective dyes thioflavin-T and Zn-PPIX bound to various DNA G4 sequences following the addition of cage 1. Our results demonstrate that 1 interacts with a wide range of G4s. Moreover, gel electrophoresis, circular dichroism and dynamic light scattering measurements establish the binding of 1 to G4 and indicate the formation of aggregate structures. Finally, we find that DNA G4 contained in an aggregate of cage 1 is protected from cleavage by S1 nuclease. We find FeII4L4 binds to G-quadruplex and forms aggregates. G-quadruplex in the aggregates is protected from digestion by S1 nuclease.![]()
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Affiliation(s)
- Jinbo Zhu
- Cavendish Laboratory, University of Cambridge JJ Thompson Avenue Cambridge CB3 0HE UK
| | - Zhiqiang Yan
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences Changchun Jilin 130022 P. R. China
| | - Filip Bošković
- Cavendish Laboratory, University of Cambridge JJ Thompson Avenue Cambridge CB3 0HE UK
| | - Cally J E Haynes
- Yusuf Hamied Department of Chemistry, University of Cambridge Lensfield Road Cambridge CB2 1EW UK
| | - Marion Kieffer
- Yusuf Hamied Department of Chemistry, University of Cambridge Lensfield Road Cambridge CB2 1EW UK
| | - Jake L Greenfield
- Yusuf Hamied Department of Chemistry, University of Cambridge Lensfield Road Cambridge CB2 1EW UK
| | - Jin Wang
- Department of Chemistry and of Physics, State University of New York at Stony Brook Stony Brook New York 11794-3400 USA
| | - Jonathan R Nitschke
- Yusuf Hamied Department of Chemistry, University of Cambridge Lensfield Road Cambridge CB2 1EW UK
| | - Ulrich F Keyser
- Cavendish Laboratory, University of Cambridge JJ Thompson Avenue Cambridge CB3 0HE UK
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Chen J, Jin X, Mei Y, Shen Z, Zhu J, Shi H, Wang M, Zheng X, Liang G. The different biological effects of TMPyP4 and cisplatin in the inflammatory microenvironment of osteosarcoma are attributed to G-quadruplex. Cell Prolif 2021; 54:e13101. [PMID: 34296479 PMCID: PMC8450119 DOI: 10.1111/cpr.13101] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2021] [Revised: 05/08/2021] [Accepted: 07/09/2021] [Indexed: 02/06/2023] Open
Abstract
OBJECTIVE Osteosarcoma (OS) is characterized by high levels of the tumour-associated inflammatory microenvironment. Moreover, in approximately 60% of OS, telomere length is maintained by alternative lengthening of telomeres (ALT) pathway. Whether the ALT pathway can be exploited for OS therapeutic treatment and how the OS inflammatory microenvironment influences the anti-cancer drug effect remains unknown. Here, we examined the biological effects of TMPyP4 and cisplatin in the inflammatory microenvironment of OS cells. MATERIALS AND METHODS Immunofluorescence in situ hybridization (IF-FISH) and C-circle experiments were used to detect the G-quadruplex and ALT activity. The redox potential of single guanine, G-quadruplex and G-quadruplex/TMPyP4 was evaluated by the lowest unoccupied molecular orbital energy (LUMO), zeta potential and cyclic voltammetry. Cell viability, flow cytometry and apoptosis, Western blot, comet assay, adhesion, transwell and scratch experiments were performed to compare the anti-tumour proliferation and migration effects of TMPyP4 and cisplatin in the inflammatory microenvironment. RESULTS This study indicated that compared with cisplatin, TMPyP4 could induce the formation of human telomeres and FAK G-quadruplex in vitro and in vivo, and TMPyP4-treated OS cells showed fewer extrachromosomal C-circles and fewer ALT-associated promyelocytic leukaemia bodies. Consequently, the ALT activity and FAK-related cell migration were suppressed by TMPyP4. Mechanistically, the formation of G-quadruplex resulted in both lower redox potential than G within the genome and FAK transcription inhibition, and TMPyP4 could enhance this phenomenon, especially in the inflammatory microenvironment. CONCLUSIONS Our results reveal that TMPyP4 is more suitable for OS treatment than cisplatin.
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Affiliation(s)
- Jianqiang Chen
- Chemical Biology Research CenterSchool of Pharmaceutical SciencesWenzhou Medical UniversityWenzhouChina
| | - Xiangxiang Jin
- Chemical Biology Research CenterSchool of Pharmaceutical SciencesWenzhou Medical UniversityWenzhouChina
| | - Yanan Mei
- Chemical Biology Research CenterSchool of Pharmaceutical SciencesWenzhou Medical UniversityWenzhouChina
| | - Zhe Shen
- Chemical Biology Research CenterSchool of Pharmaceutical SciencesWenzhou Medical UniversityWenzhouChina
| | - Jufan Zhu
- Chemical Biology Research CenterSchool of Pharmaceutical SciencesWenzhou Medical UniversityWenzhouChina
| | - Hongyi Shi
- Chemical Biology Research CenterSchool of Pharmaceutical SciencesWenzhou Medical UniversityWenzhouChina
| | - Minshan Wang
- The Affiliated Xiangshan HospitalWenzhou Medical UniversityNingboChina
- Hospital of Chinese Medicine of Haishu DistrictNingboChina
| | - Xiaohui Zheng
- Chemical Biology Research CenterSchool of Pharmaceutical SciencesWenzhou Medical UniversityWenzhouChina
| | - Guang Liang
- Chemical Biology Research CenterSchool of Pharmaceutical SciencesWenzhou Medical UniversityWenzhouChina
- School of Pharmaceutical SciencesHangzhou Medical CollegeHangzhouChina
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7
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Zhang DF, Yang ZC, Chen JQ, Jin XX, Qiu YD, Chen XJ, Shi HY, Liu ZG, Wang MS, Liang G, Zheng XH. Piperlongumine inhibits migration and proliferation of castration-resistant prostate cancer cells via triggering persistent DNA damage. BMC Complement Med Ther 2021; 21:195. [PMID: 34229670 PMCID: PMC8261967 DOI: 10.1186/s12906-021-03369-0] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2020] [Accepted: 06/28/2021] [Indexed: 12/26/2022] Open
Abstract
BACKGROUND Metastatic castration-resistant prostate cancer (CRPC) is the leading cause of death among men diagnosed with prostate cancer. Piperlongumine (PL) is a novel potential anticancer agent that has been demonstrated to exhibit anticancer efficacy against prostate cancer cells. However, the effects of PL on DNA damage and repair against CRPC have remained unclear. The aim of this study was to further explore the anticancer activity and mechanisms of action of PL against CRPC in terms of DNA damage and repair processes. METHODS The effect of PL on CRPC was evaluated by MTT assay, long-term cell proliferation, reactive oxygen species assay, western blot assay, flow cytometry assay (annexin V/PI staining), β-gal staining assay and DAPI staining assay. The capacity of PL to inhibit the invasion and migration of CRPC cells was assessed by scratch-wound assay, cell adhesion assay, transwell assay and immunofluorescence (IF) assay. The effect of PL on DNA damage and repair was determined via IF assay and comet assay. RESULTS The results showed that PL exhibited stronger anticancer activity against CRPC compared to that of taxol, cisplatin (DDP), doxorubicin (Dox), or 5-Fluorouracil (5-FU), with fewer side effects in normal cells. Importantly, PL treatment significantly decreased cell adhesion to the extracellular matrix and inhibited the migration of CRPC cells through affecting the expression and distribution of focal adhesion kinase (FAK), leading to concentration-dependent inhibition of CRPC cell proliferation and concomitantly increased cell death. Moreover, PL treatment triggered persistent DNA damage and provoked strong DNA damage responses in CRPC cells. CONCLUSION Collectively, our findings demonstrate that PL potently inhibited proliferation, migration, and invasion of CRPC cells and that these potent anticancer effects were potentially achieved via triggering persistent DNA damage in CRPC cells.
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Affiliation(s)
- Ding-Fang Zhang
- Chemical Biology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, 325035, Zhejiang, People's Republic of China
| | - Zhi-Chun Yang
- Chemical Biology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, 325035, Zhejiang, People's Republic of China
- The Fifth Affiliated Hospital of Wenzhou Medical University, Affiliated Lishui Hospital of Zhejiang University, The Central Hospital of Zhejiang Lishui, Lishui, 323000, Zhejiang, People's Republic of China
| | - Jian-Qiang Chen
- Chemical Biology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, 325035, Zhejiang, People's Republic of China
| | - Xiang-Xiang Jin
- Chemical Biology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, 325035, Zhejiang, People's Republic of China
| | - Yin-da Qiu
- Chemical Biology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, 325035, Zhejiang, People's Republic of China
| | - Xiao-Jing Chen
- Chemical Biology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, 325035, Zhejiang, People's Republic of China
| | - Hong-Yi Shi
- Chemical Biology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, 325035, Zhejiang, People's Republic of China
| | - Zhi-Guo Liu
- Chemical Biology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, 325035, Zhejiang, People's Republic of China
| | - Min-Shan Wang
- The Affiliated Xiangshan Hospital, Wenzhou Medical University, Ningbo, 315000, Zhejiang, China
- Hospital of Chinese Medicine of Haishu District, Ningbo, 315000, Zhejiang, China
| | - Guang Liang
- Chemical Biology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, 325035, Zhejiang, People's Republic of China.
| | - Xiao-Hui Zheng
- Chemical Biology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, 325035, Zhejiang, People's Republic of China.
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Palma E, Carvalho J, Cruz C, Paulo A. Metal-Based G-Quadruplex Binders for Cancer Theranostics. Pharmaceuticals (Basel) 2021; 14:605. [PMID: 34201682 PMCID: PMC8308583 DOI: 10.3390/ph14070605] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2021] [Revised: 06/21/2021] [Accepted: 06/21/2021] [Indexed: 12/11/2022] Open
Abstract
The ability of fluorescent small molecules, such as metal complexes, to selectively recognize G-quadruplex (G4) structures has opened a route to develop new probes for the visualization of these DNA structures in cells. The main goal of this review is to update the most recent research efforts towards the development of novel cancer theranostic agents using this type of metal-based probes that specifically recognize G4 structures. This encompassed a comprehensive overview of the most significant progress in the field, namely based on complexes with Cu, Pt, and Ru that are among the most studied metals to obtain this class of molecules. It is also discussed the potential interest of obtaining G4-binders with medical radiometals (e.g., 99mTc, 111In, 64Cu, 195mPt) suitable for diagnostic and/or therapeutic applications within nuclear medicine modalities, in order to enable their theranostic potential.
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Affiliation(s)
- Elisa Palma
- C2TN-Centro de Ciências e Tecnologias Nucleares, Instituto Superior Técnico, Universidade de Lisboa, Estrada Nacional 10, 2695-066 Bobadela LRS, Portugal;
| | - Josué Carvalho
- CICS-UBI-Centro de Investigação em Ciências da Saúde, Universidade da Beira Interior, Av. Infante D. Henrique, 6200-506 Covilhã, Portugal; (J.C.); (C.C.)
| | - Carla Cruz
- CICS-UBI-Centro de Investigação em Ciências da Saúde, Universidade da Beira Interior, Av. Infante D. Henrique, 6200-506 Covilhã, Portugal; (J.C.); (C.C.)
| | - António Paulo
- C2TN-Centro de Ciências e Tecnologias Nucleares, Instituto Superior Técnico, Universidade de Lisboa, Estrada Nacional 10, 2695-066 Bobadela LRS, Portugal;
- DECN-Departamento de Engenharia e Ciências Nucleares, Instituto Superior Técnico, Universidade de Lisboa, Estrada Nacional 10, 2695-066 Bobadela LRS, Portugal
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Wang G, Chen X, Wang N, Xiao Y, Shu S, Alsayed AMM, Liu L, Ma Y, Liu P, Zhang Q, Chen X, Liu Z, Zheng X. The discovery of novel sanjuanolide derivatives as chemotherapeutic agents targeting castration-resistant prostate cancer. Bioorg Chem 2021; 111:104880. [PMID: 33839585 DOI: 10.1016/j.bioorg.2021.104880] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2020] [Revised: 03/26/2021] [Accepted: 03/26/2021] [Indexed: 11/20/2022]
Abstract
There remains a critical need for more effective therapies for the treatment of castration-resistant prostate cancer (CRPC), which is the leading cause of death in patients with prostate cancer. In this study, a series of sanjuanolide derivatives were designed, synthesized and evaluated as potential anti-CRPC agents. Most of the compounds had excellent selectivity for CRPC cells with IC50 values < 20 µM. Moreover, minimal side effects on human normal hepatic MIHA cells and normal prostatic stromal myofibroblast WPMY-1 cells were observed, with IC50 > 100 µM. The representative compound S07 slowed down the proliferative rate of CRPC cells, promoted cell apoptosis and caused G2/M phase accumulation, as well as G1/G0 phase reduction. Further mechanistic studies showed that S07 treatment triggered intense DNA damage and provoked strong DNA damage response in a dose-dependent manner. These findings suggested that sanjuanolide derivatives, especially S07, selectively induced CRPC cell death by triggering intense DNA damage and DNA damage response.
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Affiliation(s)
- Guangbao Wang
- Chemical Biology Research Center at School of Pharmaceutical Sciences, Wenzhou Medical University, 1210 University Town, Wenzhou, Zhejiang 325035, China
| | - Xiaojing Chen
- Chemical Biology Research Center at School of Pharmaceutical Sciences, Wenzhou Medical University, 1210 University Town, Wenzhou, Zhejiang 325035, China
| | - Nan Wang
- Chemical Biology Research Center at School of Pharmaceutical Sciences, Wenzhou Medical University, 1210 University Town, Wenzhou, Zhejiang 325035, China
| | - Yunbei Xiao
- Department of Urology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325000, Zhejiang, China
| | - Sheng Shu
- Chemical Biology Research Center at School of Pharmaceutical Sciences, Wenzhou Medical University, 1210 University Town, Wenzhou, Zhejiang 325035, China
| | - Ali Mohammed Mohammed Alsayed
- Chemical Biology Research Center at School of Pharmaceutical Sciences, Wenzhou Medical University, 1210 University Town, Wenzhou, Zhejiang 325035, China
| | - Lu Liu
- Chemical Biology Research Center at School of Pharmaceutical Sciences, Wenzhou Medical University, 1210 University Town, Wenzhou, Zhejiang 325035, China
| | - Yue Ma
- Chemical Biology Research Center at School of Pharmaceutical Sciences, Wenzhou Medical University, 1210 University Town, Wenzhou, Zhejiang 325035, China
| | - Peng Liu
- Chemical Biology Research Center at School of Pharmaceutical Sciences, Wenzhou Medical University, 1210 University Town, Wenzhou, Zhejiang 325035, China
| | - Qianwen Zhang
- Chemical Biology Research Center at School of Pharmaceutical Sciences, Wenzhou Medical University, 1210 University Town, Wenzhou, Zhejiang 325035, China
| | - Xiangjuan Chen
- Department of Obstetrics and Gynecology, Shenzhen University General Hospital, Shenzhen University, Shenzhen, Guangdong 518000, China.
| | - Zhiguo Liu
- Chemical Biology Research Center at School of Pharmaceutical Sciences, Wenzhou Medical University, 1210 University Town, Wenzhou, Zhejiang 325035, China.
| | - Xiaohui Zheng
- Chemical Biology Research Center at School of Pharmaceutical Sciences, Wenzhou Medical University, 1210 University Town, Wenzhou, Zhejiang 325035, China.
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10
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Xu CX, Liu LY, Lv B, Zhao HY, Cao Q, Zhai T, Mao ZW. Two novel fan-shaped trinuclear Pt(ii) complexes act as G-quadruplex binders and telomerase inhibitors. Dalton Trans 2020; 49:9322-9329. [PMID: 32579629 DOI: 10.1039/d0dt01767a] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Two new trinuclear Pt(ii) complexes {[Pt(dien)]3(tib)}(NO3)6 (1) and {[Pt(dpa)]3(tib)}(NO3)6 (2) (dien: diethylenetriamine, dpa: bis-(2-pyridylmethyl)amine, tib: 1,3,5-tris(1H-imidazol-1-yl)benzene) have been designed, synthesized, characterized and applied to a series of biochemical studies. We found that both of the Pt(ii) complexes exhibited much better selectivity for human telomeric G-quadruplex sequence than promoter G-quadruplexes (c-kit, c-myc, and bcl2) or duplex DNA. Both complexes displayed comparative stability and affinity towards human telomeric G-quadruplex by the studies from surface plasmon resonance, fluorescence resonance energy transfer and polymerase chain reaction stop assays. The circular dichroism indicated that both complexes could induce and stabilize anti-parallel G-quadruplex structures. Molecule docking presented that Pt(ii) complex intercalated into the large groove of human telomeric G-quadruplex (PDB ID: 143D). Furthermore, telomeric repeat amplification protocol assays quantitatively evaluated the inhibition of telomerase activity caused by the Pt(ii) complexes. The obtained IC50 values of 6.41 ± 0.042 μM and 2.67 ± 0.035 μM for 1 and 2, respectively, exhibited strong telomerase inhibitions. All results suggest that such fan-shaped trinuclear Pt(ii) complexes are effective and selective G-quadruplex binders, as well as strong telomerase inhibitors. This study provides insight into the development of human telomeric G-quadruplex targeted anticancer drugs based on the metal complex.
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Affiliation(s)
- Cui-Xia Xu
- Jiangsu Key Laboratory for Biofunctional Molecules, College of Life Science and Chemistry, Jiangsu Second Normal University, Nanjing 211222, China and MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry and Chemical Engineering, Sun Yat-Sen University, Guangzhou 510275, China.
| | - Liu-Yi Liu
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry and Chemical Engineering, Sun Yat-Sen University, Guangzhou 510275, China.
| | - Bei Lv
- Jiangsu Key Laboratory for Biofunctional Molecules, College of Life Science and Chemistry, Jiangsu Second Normal University, Nanjing 211222, China
| | - Hao-Yu Zhao
- Jiangsu Key Laboratory for Biofunctional Molecules, College of Life Science and Chemistry, Jiangsu Second Normal University, Nanjing 211222, China
| | - Qian Cao
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry and Chemical Engineering, Sun Yat-Sen University, Guangzhou 510275, China.
| | - Teng Zhai
- School of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing 210094, PR China
| | - Zong-Wan Mao
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry and Chemical Engineering, Sun Yat-Sen University, Guangzhou 510275, China.
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11
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Biswas S, Samui S, Das AK, Pasadi S, Muniyappa K, Naskar J. Targeting G-quadruplex DNA with synthetic dendritic peptide: modulation of the proliferation of human cancer cells. RSC Adv 2020; 10:26388-26396. [PMID: 35685402 PMCID: PMC9122626 DOI: 10.1039/d0ra04780e] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2020] [Accepted: 06/30/2020] [Indexed: 01/04/2023] Open
Abstract
Telomerase, a reverse transcriptase enzyme, is found to over express in most cancer cells. It elongates the telomere region by repeated adding of TTAGGG in the 3′-end and leads to excess cell proliferation which causes cancer. G-quadruplex (G4) formation can inhibit such telomere lengthening. So, stabilization of G4 structure as well as inhibition of telomerase activity is very promising approach in targeted cancer therapy. Herein, the aptitude of a synthetic dendritic peptide, Cδ2–(YEE)–E (peptide 1), to target specifically the human telomeric G4 DNA, dAGGG(TTAGGG)3, has been evaluated. Both biochemical and biophysical techniques including gel mobility shift assay, isothermal titration calorimetry and fluorescence spectroscopy have been employed for the purpose. Circular dichroism study reveals that the targeting results an increase in thermal stability of G4 DNA. Interestingly, replacement of N-terminal tyrosine residue of peptide 1 by valine, Cδ2–(VEE)–E, (peptide 2) consequences in loss of its G4 DNA targeting ability, although both the peptides exhibit comparable affinity toward double-stranded DNA. Of note, peptide 1 causes cessation of growth of human cancer cells (HeLa and U2OS) and induces apoptosis in vitro. But it has no significant inhibitory effect on the growth of normal human embryonic kidney 293 cells. Mechanistically, Telomeric Repeat Amplification Protocol (TRAP) assay indicates that peptide 1 effectively inhibits the telomerase activity in human cell extracts. Overall, this study demonstrates the usefulness of a synthetic dendritic peptide as an inhibitor of tumor cell growth by inducing apoptosis upon targeting the telomeric G4 DNA. A synthetic dendritic peptide, targeting human telomeric G4 DNA, inhibits the telomerase and lessens the proliferation of human cancer cells.![]()
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Affiliation(s)
- Soumi Biswas
- Department of Biochemistry and Biophysics
- University of Kalyani
- Nadia
- India
| | - Satyabrata Samui
- Department of Biochemistry and Biophysics
- University of Kalyani
- Nadia
- India
| | - Apurba K. Das
- Department of Chemistry
- Indian Institute of Technology Indore
- Indore 453552
- India
| | - Sanjeev Pasadi
- Department of Biochemistry
- Indian Institute of Science
- Bangalore
- India
| | - K. Muniyappa
- Department of Biochemistry
- Indian Institute of Science
- Bangalore
- India
| | - Jishu Naskar
- Department of Biochemistry and Biophysics
- University of Kalyani
- Nadia
- India
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12
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Kench T, Vilar R. Metal complexes as G-quadruplex binders. ANNUAL REPORTS IN MEDICINAL CHEMISTRY 2020. [DOI: 10.1016/bs.armc.2020.05.004] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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13
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Domarco O, Kieler C, Pirker C, Dinhof C, Englinger B, Reisecker JM, Timelthaler G, García MD, Peinador C, Keppler BK, Berger W, Terenzi A. Subcellular Duplex DNA and G-Quadruplex Interaction Profiling of a Hexagonal Pt II Metallacycle. Angew Chem Int Ed Engl 2019; 58:8007-8012. [PMID: 31002438 PMCID: PMC6563712 DOI: 10.1002/anie.201900934] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2019] [Revised: 04/17/2019] [Indexed: 12/21/2022]
Abstract
Metal-driven self-assembly afforded a multitude of fascinating supramolecular coordination complexes (SCCs) with applications as catalysts, host-guest, and stimuli-responsive systems. However, the interest in the biological applications of SCCs is only starting to emerge and thorough characterization of their behavior in biological milieus is still lacking. Herein, we report on the synthesis and detailed in-cell tracking of a Pt2 L2 metallacycle. We show that our hexagonal supramolecule accumulates in cancer cell nuclei, exerting a distinctive blue fluorescence staining of chromatin resistant to UV photobleaching selectively in nucleolar G4-rich regions. SCC co-localizes with epitopes of the quadruplex-specific antibody BG4 and replaces other well-known G4 stabilizers. Moreover, the photophysical changes accompanying the metallacycle binding to G4s in solution (fluorescence quenching, absorption enhancement) also take place intracellularly, allowing its subcellular interaction tracking.
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Affiliation(s)
- Olaya Domarco
- Universidade da CoruñaDepartamento de Química y Centro de Investigacións Científicas AvanzadasE-15071 ACoruñaSpain
| | - Claudia Kieler
- Medical University of ViennaDepartment of Medicine IInstitute of Cancer Research and Comprehensive Cancer CenterBorschkegasse 8aA-1090ViennaAustria
| | - Christine Pirker
- Medical University of ViennaDepartment of Medicine IInstitute of Cancer Research and Comprehensive Cancer CenterBorschkegasse 8aA-1090ViennaAustria
| | - Carina Dinhof
- Medical University of ViennaDepartment of Medicine IInstitute of Cancer Research and Comprehensive Cancer CenterBorschkegasse 8aA-1090ViennaAustria
| | - Bernhard Englinger
- Medical University of ViennaDepartment of Medicine IInstitute of Cancer Research and Comprehensive Cancer CenterBorschkegasse 8aA-1090ViennaAustria
| | - Johannes M. Reisecker
- Medical University of ViennaDepartment of Medicine IInstitute of Cancer Research and Comprehensive Cancer CenterBorschkegasse 8aA-1090ViennaAustria
| | - Gerald Timelthaler
- Medical University of ViennaDepartment of Medicine IInstitute of Cancer Research and Comprehensive Cancer CenterBorschkegasse 8aA-1090ViennaAustria
| | - Marcos D. García
- Universidade da CoruñaDepartamento de Química y Centro de Investigacións Científicas AvanzadasE-15071 ACoruñaSpain
| | - Carlos Peinador
- Universidade da CoruñaDepartamento de Química y Centro de Investigacións Científicas AvanzadasE-15071 ACoruñaSpain
| | - Bernhard K. Keppler
- University of ViennaInstitute of Inorganic ChemistryWaehringerstrasse 42A-1090ViennaAustria
| | - Walter Berger
- Medical University of ViennaDepartment of Medicine IInstitute of Cancer Research and Comprehensive Cancer CenterBorschkegasse 8aA-1090ViennaAustria
| | - Alessio Terenzi
- University of ViennaInstitute of Inorganic ChemistryWaehringerstrasse 42A-1090ViennaAustria
- Present address: Donostia International Physics CenterPaseo Manuel de Lardizabal 420018DonostiaSpain
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14
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Domarco O, Kieler C, Pirker C, Dinhof C, Englinger B, Reisecker JM, Timelthaler G, García MD, Peinador C, Keppler BK, Berger W, Terenzi A. Subcellular Duplex DNA and G‐Quadruplex Interaction Profiling of a Hexagonal Pt
II
Metallacycle. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201900934] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Olaya Domarco
- Universidade da Coruña Departamento de Química y Centro de Investigacións Científicas Avanzadas E-15071 A Coruña Spain
| | - Claudia Kieler
- Medical University of Vienna Department of Medicine I Institute of Cancer Research and Comprehensive Cancer Center Borschkegasse 8a A-1090 Vienna Austria
| | - Christine Pirker
- Medical University of Vienna Department of Medicine I Institute of Cancer Research and Comprehensive Cancer Center Borschkegasse 8a A-1090 Vienna Austria
| | - Carina Dinhof
- Medical University of Vienna Department of Medicine I Institute of Cancer Research and Comprehensive Cancer Center Borschkegasse 8a A-1090 Vienna Austria
| | - Bernhard Englinger
- Medical University of Vienna Department of Medicine I Institute of Cancer Research and Comprehensive Cancer Center Borschkegasse 8a A-1090 Vienna Austria
| | - Johannes M. Reisecker
- Medical University of Vienna Department of Medicine I Institute of Cancer Research and Comprehensive Cancer Center Borschkegasse 8a A-1090 Vienna Austria
| | - Gerald Timelthaler
- Medical University of Vienna Department of Medicine I Institute of Cancer Research and Comprehensive Cancer Center Borschkegasse 8a A-1090 Vienna Austria
| | - Marcos D. García
- Universidade da Coruña Departamento de Química y Centro de Investigacións Científicas Avanzadas E-15071 A Coruña Spain
| | - Carlos Peinador
- Universidade da Coruña Departamento de Química y Centro de Investigacións Científicas Avanzadas E-15071 A Coruña Spain
| | - Bernhard K. Keppler
- University of Vienna Institute of Inorganic Chemistry Waehringerstrasse 42 A-1090 Vienna Austria
| | - Walter Berger
- Medical University of Vienna Department of Medicine I Institute of Cancer Research and Comprehensive Cancer Center Borschkegasse 8a A-1090 Vienna Austria
| | - Alessio Terenzi
- University of Vienna Institute of Inorganic Chemistry Waehringerstrasse 42 A-1090 Vienna Austria
- Present address: Donostia International Physics Center Paseo Manuel de Lardizabal 4 20018 Donostia Spain
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15
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Wragg D, de Almeida A, Bonsignore R, Kühn FE, Leoni S, Casini A. On the Mechanism of Gold/NHC Compounds Binding to DNA G-Quadruplexes: Combined Metadynamics and Biophysical Methods. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201805727] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Darren Wragg
- School of Chemistry; Cardiff University; Park Place CF10 3AT Cardiff UK
| | | | | | - Fritz E. Kühn
- Molecular Catalysis; Department of Chemistry; Catalysis Research Center; Technische Universität München; Lichtenbergstr. 4 85747 Garching bei München Germany
| | - Stefano Leoni
- School of Chemistry; Cardiff University; Park Place CF10 3AT Cardiff UK
| | - Angela Casini
- School of Chemistry; Cardiff University; Park Place CF10 3AT Cardiff UK
- Institute for Advanced Study; Technische Universität München; Lichtenbergstr. 2a 85747 Garching bei München Germany
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16
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Wragg D, de Almeida A, Bonsignore R, Kühn FE, Leoni S, Casini A. On the Mechanism of Gold/NHC Compounds Binding to DNA G-Quadruplexes: Combined Metadynamics and Biophysical Methods. Angew Chem Int Ed Engl 2018; 57:14524-14528. [DOI: 10.1002/anie.201805727] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2018] [Indexed: 12/21/2022]
Affiliation(s)
- Darren Wragg
- School of Chemistry; Cardiff University; Park Place CF10 3AT Cardiff UK
| | | | | | - Fritz E. Kühn
- Molecular Catalysis; Department of Chemistry; Catalysis Research Center; Technische Universität München; Lichtenbergstr. 4 85747 Garching bei München Germany
| | - Stefano Leoni
- School of Chemistry; Cardiff University; Park Place CF10 3AT Cardiff UK
| | - Angela Casini
- School of Chemistry; Cardiff University; Park Place CF10 3AT Cardiff UK
- Institute for Advanced Study; Technische Universität München; Lichtenbergstr. 2a 85747 Garching bei München Germany
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17
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Łęczkowska A, Gonzalez‐Garcia J, Perez‐Arnaiz C, Garcia B, White AJP, Vilar R. Binding Studies of Metal–Salphen and Metal–Bipyridine Complexes towards G‐Quadruplex DNA. Chemistry 2018; 24:11785-11794. [DOI: 10.1002/chem.201802248] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2018] [Indexed: 01/16/2023]
Affiliation(s)
- Anna Łęczkowska
- Department of ChemistryImperial College London London SW7 2AZ UK
| | | | - Cristina Perez‐Arnaiz
- Department of ChemistryImperial College London London SW7 2AZ UK
- Universidad de BurgosDepartamento de Química 09001 Burgos Spain
| | - Begoña Garcia
- Universidad de BurgosDepartamento de Química 09001 Burgos Spain
| | | | - Ramon Vilar
- Department of ChemistryImperial College London London SW7 2AZ UK
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18
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Qin QP, Meng T, Tan MX, Liu YC, Wang SL, Zou BQ, Liang H. Synthesis, characterization and biological evaluation of six highly cytotoxic ruthenium(ii) complexes with 4'-substituted-2,2':6',2''-terpyridine. MEDCHEMCOMM 2018; 9:525-533. [PMID: 30108943 PMCID: PMC6072480 DOI: 10.1039/c7md00532f] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/20/2017] [Accepted: 01/31/2018] [Indexed: 12/23/2022]
Abstract
Herein, six ruthenium(ii) terpyridine complexes, i.e. [RuCl2(4-EtN-Phtpy)(DMSO)] (Ru1), [RuCl2(4-MeO-Phtpy)(DMSO)] (Ru2), [RuCl2(2-MeO-Phtpy)(DMSO)] (Ru3), [RuCl2(3-MeO-Phtpy)(DMSO)] (Ru4), [RuCl2(1-Bip-Phtpy)(DMSO)] (Ru5), and [RuCl2(1-Pyr-Phtpy)(DMSO)] (Ru6) with 4'-(4-diethylaminophenyl)-2,2':6',2''-terpyridine (4-EtN-Phtpy), 4'-(4-methoxyphenyl)-2,2':6',2''-terpyridine (4-MeO-Phtpy), 4'-(2-methoxyphenyl)-2,2':6',2''-terpyridine (2-MeO-Phtpy), 4'-(3-methoxyphenyl)-2,2':6',2''-terpyridine (3-MeO-Phtpy), 4'-(1-biphenylene)-2,2':6',2''-terpyridine (1-Bip-Phtpy), and 4'-(1-pyrene)-2,2':6',2''-terpyridine (1-Pyr-Phtpy), respectively, were synthesized and fully characterized. The MTT assay demonstrates that the in vitro anticancer activity of Ru1 is higher than that of Ru2-Ru6 and more selective for Hep-G2 cells than for normal HL-7702 cells. In addition, various biological assays show that Ru1 and Ru6, especially the Ru1 complex, are telomerase inhibitors targeting c-myc G4 DNA and also cause apoptosis of Hep-G2 cells. With the same Ru center, the in vitro antitumor activity and cellular uptake ability of the 4-EtN-Phtpy and 1-Bip-Phtpy ligands follow the order 4-EtN-Phtpy > 1-Bip-Phtpy.
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Affiliation(s)
- Qi-Pin Qin
- Guangxi Key Laboratory of Agricultural Resources Chemistry and Biotechnology , College of Chemistry and Food Science , Yulin Normal University , 1303 Jiaoyudong Road , Yulin 537000 , PR China . ; ; ; Tel: +86 775 2623650
- State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources , School of Chemistry and Pharmacy , Guangxi Normal University , 15 Yucai Road , Guilin 541004 , PR China
| | - Ting Meng
- Guangxi Key Laboratory of Agricultural Resources Chemistry and Biotechnology , College of Chemistry and Food Science , Yulin Normal University , 1303 Jiaoyudong Road , Yulin 537000 , PR China . ; ; ; Tel: +86 775 2623650
- State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources , School of Chemistry and Pharmacy , Guangxi Normal University , 15 Yucai Road , Guilin 541004 , PR China
| | - Ming-Xiong Tan
- Guangxi Key Laboratory of Agricultural Resources Chemistry and Biotechnology , College of Chemistry and Food Science , Yulin Normal University , 1303 Jiaoyudong Road , Yulin 537000 , PR China . ; ; ; Tel: +86 775 2623650
- State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources , School of Chemistry and Pharmacy , Guangxi Normal University , 15 Yucai Road , Guilin 541004 , PR China
| | - Yan-Cheng Liu
- State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources , School of Chemistry and Pharmacy , Guangxi Normal University , 15 Yucai Road , Guilin 541004 , PR China
| | - Shu-Long Wang
- Guangxi Key Laboratory of Agricultural Resources Chemistry and Biotechnology , College of Chemistry and Food Science , Yulin Normal University , 1303 Jiaoyudong Road , Yulin 537000 , PR China . ; ; ; Tel: +86 775 2623650
- State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources , School of Chemistry and Pharmacy , Guangxi Normal University , 15 Yucai Road , Guilin 541004 , PR China
| | - Bi-Qun Zou
- Department of Chemistry , Guilin Normal College , 21 Xinyi Road , Gulin 541001 , PR China .
| | - Hong Liang
- State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources , School of Chemistry and Pharmacy , Guangxi Normal University , 15 Yucai Road , Guilin 541004 , PR China
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19
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Domarco O, Lötsch D, Schreiber J, Dinhof C, Van Schoonhoven S, García MD, Peinador C, Keppler BK, Berger W, Terenzi A. Self-assembled Pt 2L 2 boxes strongly bind G-quadruplex DNA and influence gene expression in cancer cells. Dalton Trans 2018; 46:329-332. [PMID: 27918050 DOI: 10.1039/c6dt03876j] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Supramolecular Pt(ii) quadrangular boxes bind native and G-quadruplex DNA motifs in a size-dependent fashion. Three Pt molecular squares of distinct size show biological activity against cancer cells and heavily influence the expression of genes known to form G-quadruplexes in their promoter regions. The smallest Pt-box displays less activity but more selectivity for a quadruplex formed in the c-Kit gene.
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Affiliation(s)
- O Domarco
- Universidade da Coruña, Departamento de Química Fundamental and Centro de Investigacións Científicas Avanzadas, Facultade de Ciencias, E-15071 A Coruña, Spain.
| | - D Lötsch
- Medical University Vienna, Department of Medicine I, Institute of Cancer Research and Comprehensive Cancer Center, Borschkegasse 8a, A-1090 Vienna, Austria
| | - J Schreiber
- Medical University Vienna, Department of Medicine I, Institute of Cancer Research and Comprehensive Cancer Center, Borschkegasse 8a, A-1090 Vienna, Austria
| | - C Dinhof
- Medical University Vienna, Department of Medicine I, Institute of Cancer Research and Comprehensive Cancer Center, Borschkegasse 8a, A-1090 Vienna, Austria
| | - S Van Schoonhoven
- Medical University Vienna, Department of Medicine I, Institute of Cancer Research and Comprehensive Cancer Center, Borschkegasse 8a, A-1090 Vienna, Austria
| | - M D García
- Universidade da Coruña, Departamento de Química Fundamental and Centro de Investigacións Científicas Avanzadas, Facultade de Ciencias, E-15071 A Coruña, Spain.
| | - C Peinador
- Universidade da Coruña, Departamento de Química Fundamental and Centro de Investigacións Científicas Avanzadas, Facultade de Ciencias, E-15071 A Coruña, Spain.
| | - B K Keppler
- University of Vienna, Institute of Inorganic Chemistry, Waehringerstrasse 42, A-1090 Vienna, Austria and Research Platform "Translational Cancer Therapy Research", University of Vienna and Medical University of Vienna, Vienna, Austria.
| | - W Berger
- Medical University Vienna, Department of Medicine I, Institute of Cancer Research and Comprehensive Cancer Center, Borschkegasse 8a, A-1090 Vienna, Austria and Research Platform "Translational Cancer Therapy Research", University of Vienna and Medical University of Vienna, Vienna, Austria.
| | - A Terenzi
- University of Vienna, Institute of Inorganic Chemistry, Waehringerstrasse 42, A-1090 Vienna, Austria and Research Platform "Translational Cancer Therapy Research", University of Vienna and Medical University of Vienna, Vienna, Austria.
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20
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Garci A, Castor KJ, Fakhoury J, Do JL, Di Trani J, Chidchob P, Stein RS, Mittermaier AK, Friščić T, Sleiman H. Efficient and Rapid Mechanochemical Assembly of Platinum(II) Squares for Guanine Quadruplex Targeting. J Am Chem Soc 2017; 139:16913-16922. [PMID: 29058892 DOI: 10.1021/jacs.7b09819] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
We present a rapid and efficient method to generate a family of platinum supramolecular square complexes, including previously inaccessible targets, through the use of ball milling mechanochemistry. This one-pot, two-step process occurs in minutes and enables the synthesis of the squares [Pt4(en)4(N∩N)4][CF3SO3]8 (en= ethylenediamine, N∩N = 4,4'-bipyridine derivatives) from commercially available precursor K2PtCl4 in good to excellent yields. In contrast, solution-based assembly requires heating the reagents for weeks and gives lower yields. Mechanistic investigations into this remarkable rate acceleration revealed that solution-based assembly (refluxing for days) results in the formation of large oligomeric side-products that are difficult to break down into the desired squares. On the other hand, ball milling in the solid state is rapid and appears to involve smaller intermediates. We examined the binding of the new supramolecular squares to guanine quadruplexes, including oncogene and telomere-associated DNA and RNA sequences. Sub-micromolar binding affinities were obtained by fluorescence displacement assays (FID) and isothermal titration calorimetry (ITC), with binding preference to telomere RNA (TERRA) sequences. ITC showed a 1:1 binding stoichiometry of the metallosquare to TERRA, while the stoichiometry was more complex for telomeric quadruplex DNA and a double-stranded DNA control.
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Affiliation(s)
- Amine Garci
- Department of Chemistry, McGill University , 801 Sherbrooke Street West, Montréal, Québec H3A 0B8, Canada
| | - Katherine J Castor
- Department of Chemistry, McGill University , 801 Sherbrooke Street West, Montréal, Québec H3A 0B8, Canada
| | - Johans Fakhoury
- Department of Chemistry, McGill University , 801 Sherbrooke Street West, Montréal, Québec H3A 0B8, Canada
| | - Jean-Louis Do
- Department of Chemistry, McGill University , 801 Sherbrooke Street West, Montréal, Québec H3A 0B8, Canada
| | - Justin Di Trani
- Department of Chemistry, McGill University , 801 Sherbrooke Street West, Montréal, Québec H3A 0B8, Canada
| | - Pongphak Chidchob
- Department of Chemistry, McGill University , 801 Sherbrooke Street West, Montréal, Québec H3A 0B8, Canada
| | - Robin S Stein
- Department of Chemistry, McGill University , 801 Sherbrooke Street West, Montréal, Québec H3A 0B8, Canada
| | - Anthony K Mittermaier
- Department of Chemistry, McGill University , 801 Sherbrooke Street West, Montréal, Québec H3A 0B8, Canada
| | - Tomislav Friščić
- Department of Chemistry, McGill University , 801 Sherbrooke Street West, Montréal, Québec H3A 0B8, Canada
| | - Hanadi Sleiman
- Department of Chemistry, McGill University , 801 Sherbrooke Street West, Montréal, Québec H3A 0B8, Canada
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21
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Ferraro G, De Benedictis I, Malfitano A, Morelli G, Novellino E, Marasco D. Interactions of cisplatin analogues with lysozyme: a comparative analysis. Biometals 2017; 30:733-746. [DOI: 10.1007/s10534-017-0041-y] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2017] [Accepted: 08/07/2017] [Indexed: 10/19/2022]
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22
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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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23
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Zheng XH, Nie X, Fang Y, Zhang Z, Xiao Y, Mao Z, Liu H, Ren J, Wang F, Xia L, Huang J, Zhao Y. A Cisplatin Derivative Tetra-Pt(bpy) as an Oncotherapeutic Agent for Targeting ALT Cancer. J Natl Cancer Inst 2017; 109:3752362. [PMID: 28521363 DOI: 10.1093/jnci/djx061] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2016] [Accepted: 03/13/2017] [Indexed: 11/14/2022] Open
Abstract
Background In approximately 15% of human cancers, telomere length is maintained independently of telomerase by the homologous recombination (HR)-mediated alternative lengthening of telomeres (ALT) pathway. Whether the ALT pathway can be exploited for therapeutic treatment remains unknown. The purpose of this study is to develop oncotherapeutic agent to target ALT cancers. Methods Surface plasmon resonance assay, antibody to G-quadruplex, and fluorescence in situ hybridization (FISH) were used to discover Tetra-Pt(bpy), a cisplatin derivative that specifically targets telomeric G-quadruplex. We used immunofluorescence, FISH, C-circle assay, and chromosome orientation FISH to evaluate the inhibitory effect of Tetra-Pt(bpy) on ALT activity in human ALT cancers. The shortening of telomere length induced by Tetra-Pt(bpy) was determined by telomere restriction fragment or Q-FISH. Cell destination after Tetra-Pt(bpy) treatment was determined by β-gal staining or apoptosis assay. Nude mice (n = 4 per group) were injected with U2OS cells to evaluate the effects of Tetra-Pt(bpy) on tumor growth. All statistical tests were two-sided. Results Tetra-Pt(bpy) inhibits the strand invasion/annealing step of telomeric homologous recombination by selectively converting telomeric ssDNA to a G-quadruplex. ALT-cells treated with Tetra-Pt(bpy) show fewer ALT-associated promyelocytic leukemia bodies (untreated: mean±SD = 5.9±0.2 vs treated: mean±SD = 3.1±0.1, P < .001), fewer extrachromosomal C-circles (untreated: mean±SD = 100.5±1.6 vs treated: mean±SD = 18.0±1.7, P < .001), and reduced telomere sister chromatin exchanges (untreated: mean±SD = 25.2%±1.5% vs treated: mean±SD = 13.1%±1.9%, P < .001). Consequently, critically short telomeres accumulate after multiple population doublings (untreated: mean±SD = 18.9%±1.7% vs treated: mean±SD = 57.4%±2.2%, P < .001), resulting in cell death by apoptosis or senescence. In vivo, Tetra-Pt(bpy) severely inhibits the growth of ALT-cell xenograft tumors in mice (untreated: mean±SD = 57.1±3.7 mm 3 vs treated: mean±SD = 19.0±3.2 mm 3 , P < .001). Importantly, Tetra-Pt(bpy) exhibits no adverse effects on proliferation, gene expression, or telomere metabolism in normal cells. Conclusions These results reveal the potential of Tetra-Pt(bpy) as a novel oncotherapeutic agent for targeting ALT cancer cells.
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Affiliation(s)
- Xiao-Hui Zheng
- Key Laboratory of Gene Engineering of the Ministry of Education, School of Life Sciences, Sun Yat-sen University, Guangzhou, P. R. China.,Sun Yat-sen University, Guangzhou, P. R. China; Medical School, Shenzhen University, Shenzhen, P. R. China
| | - Xin Nie
- Key Laboratory of Gene Engineering of the Ministry of Education, School of Life Sciences, Sun Yat-sen University, Guangzhou, P. R. China
| | - Yiming Fang
- Key Laboratory of Gene Engineering of the Ministry of Education, School of Life Sciences, Sun Yat-sen University, Guangzhou, P. R. China
| | - Zepeng Zhang
- Key Laboratory of Gene Engineering of the Ministry of Education, School of Life Sciences, Sun Yat-sen University, Guangzhou, P. R. China
| | - Yingnan Xiao
- School of basic Medical Sciences, Tianjin Medical University, Tianjin, P. R. China
| | - Zongwan Mao
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry and Chemical Engineering, Sun Yat-sen University, Guangzhou, P. R. China
| | - Haiying Liu
- Key Laboratory of Gene Engineering of the Ministry of Education, School of Life Sciences, Sun Yat-sen University, Guangzhou, P. R. China
| | - Jian Ren
- Key Laboratory of Gene Engineering of the Ministry of Education, School of Life Sciences, Sun Yat-sen University, Guangzhou, P. R. China.,Collaborative Innovation Center of High Performance Computing, National University of Defense Technology, Changsha, P. R. China
| | - Feng Wang
- School of basic Medical Sciences, Tianjin Medical University, Tianjin, P. R. China
| | - Lixin Xia
- Sun Yat-sen University, Guangzhou, P. R. China; Medical School, Shenzhen University, Shenzhen, P. R. China
| | - Junjiu Huang
- Key Laboratory of Gene Engineering of the Ministry of Education, School of Life Sciences, Sun Yat-sen University, Guangzhou, P. R. China
| | - Yong Zhao
- Key Laboratory of Gene Engineering of the Ministry of Education, School of Life Sciences, Sun Yat-sen University, Guangzhou, P. R. China.,Collaborative Innovation Center of High Performance Computing, National University of Defense Technology, Changsha, P. R. China
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24
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Cao Q, Li Y, Freisinger E, Qin PZ, Sigel RKO, Mao ZW. G-quadruplex DNA targeted metal complexes acting as potential anticancer drugs. Inorg Chem Front 2017. [DOI: 10.1039/c6qi00300a] [Citation(s) in RCA: 174] [Impact Index Per Article: 24.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
This review summarizes the recent development of G4 DNA targeted metal complexes and discusses their potential as anticancer drugs.
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Affiliation(s)
- Qian Cao
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry
- School of Chemistry and Chemical Engineering
- Sun Yat-Sen University
- Guangzhou 510275
- China
| | - Yi Li
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry
- School of Chemistry and Chemical Engineering
- Sun Yat-Sen University
- Guangzhou 510275
- China
| | - Eva Freisinger
- University of Zurich
- Department of Chemistry
- CH-8057 Zurich
- Switzerland
| | - Peter Z. Qin
- Department of Chemistry
- University of Southern California
- Los Angeles
- USA
| | | | - Zong-Wan Mao
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry
- School of Chemistry and Chemical Engineering
- Sun Yat-Sen University
- Guangzhou 510275
- China
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25
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Qin QP, Qin JL, Meng T, Yang GA, Wei ZZ, Liu YC, Liang H, Chen ZF. Preparation of 6/8/11-Amino/Chloro-Oxoisoaporphine and Group-10 Metal Complexes and Evaluation of Their in Vitro and in Vivo Antitumor Activity. Sci Rep 2016; 6:37644. [PMID: 27898051 PMCID: PMC5127189 DOI: 10.1038/srep37644] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2016] [Accepted: 09/19/2016] [Indexed: 12/26/2022] Open
Abstract
A series of group-10 metal complexes 1–14 of oxoisoaporphine derivatives were designed and synthesized. 1–14 were more selectively cytotoxic to Hep-G2 cells comparing with normal liver cells. In vitro cytotoxicity results showed that complexes 1–6, 7, 8, 10 and 11, especially 3, were telomerase inhibitors targeting c-myc, telomeric, and bcl-2 G4s and triggered cell senescence and apoptosis; they also caused telomere/DNA damage and S phase arrest. In addition, 1–6 also caused mitochondrial dysfunction. Notably, 3 with 6-amino substituted ligand La exhibited less side effects than 6 with 8-amino substituted ligand Lb and cisplatin, but similar tumor growth inhibition efficacy in BEL-7402 xenograft model. Complex 3 has the potential to be developed as an effective anticancer agent.
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Affiliation(s)
- Qi-Pin Qin
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmacy, Guangxi Normal University, 15 Yucai Road, Guilin 541004, P.R. China
| | - Jiao-Lan Qin
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmacy, Guangxi Normal University, 15 Yucai Road, Guilin 541004, P.R. China
| | - Ting Meng
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmacy, Guangxi Normal University, 15 Yucai Road, Guilin 541004, P.R. China
| | - Gui-Ai Yang
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmacy, Guangxi Normal University, 15 Yucai Road, Guilin 541004, P.R. China
| | - Zu-Zhuang Wei
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmacy, Guangxi Normal University, 15 Yucai Road, Guilin 541004, P.R. China
| | - Yan-Cheng Liu
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmacy, Guangxi Normal University, 15 Yucai Road, Guilin 541004, P.R. China
| | - Hong Liang
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmacy, Guangxi Normal University, 15 Yucai Road, Guilin 541004, P.R. China
| | - Zhen-Feng Chen
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmacy, Guangxi Normal University, 15 Yucai Road, Guilin 541004, P.R. China
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26
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Marasco D, Messori L, Marzo T, Merlino A. Oxaliplatin vs. cisplatin: competition experiments on their binding to lysozyme. Dalton Trans 2016; 44:10392-8. [PMID: 25974859 DOI: 10.1039/c5dt01279a] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
The model protein hen egg white lysozyme was challenged with oxaliplatin and cisplatin. ESI mass spectrometry, surface plasmon resonance and thermal shift analyses demonstrate the formation of a bis-platinum adduct, though in very small amounts. Crystals of the bis-platinum adduct were obtained using two different preparations and the X-ray structures were solved at 1.85 Å and 1.95 Å resolution. Overall, the obtained data point out that, under the analyzed conditions, the two Pt drugs have similar affinities for the protein, but bind on its surface at two non-overlapping sites. In other words, these two drugs manifest a significantly different reactivity with this model protein and do not compete for the same protein binding sites.
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Affiliation(s)
- Daniela Marasco
- Department of Pharmacy, University of Naples Federico II, via Montesano 12, 80120, Napoli, Italy
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27
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Xu CX, Zhang X, Zhou YW, Wang H, Cao Q, Shen Y, Ji LN, Mao ZW, Qin PZ. A Nitroxide-Tagged Platinum(II) Complex Enables the Identification of DNA G-Quadruplex Binding Mode. Chemistry 2016; 22:3405-3413. [PMID: 26845489 DOI: 10.1002/chem.201504960] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
We reported a novel strategy for investigating small molecule binding to G-quadruplexes (GQs). A newly synthesized dinuclear platinum(II) complex (Pt2L) containing a nitroxide radical was shown to selectively bind a GQ-forming sequence derived from human telomere (hTel). Using the nitroxide moiety as a spin label, electron paramagnetic resonance (EPR) spectroscopy was carried out to investigate binding between Pt2L and hTel GQ. Measurements indicated that two molecules of Pt2L bind with one molecule of hTel GQ. The inter-spin distance measured between the two bound Pt2L, together with molecular docking analyses, revealed that Pt2L predominately binds to the neighboring narrow and wide grooves of the G-tetrads as hTel adopts the antiparallel conformation. The design and synthesis of nitroxide tagged GQ binders, and the use of spin-labeling/EPR to investigate their interactions with GQs, will aid the development of small molecules for manipulating GQs involved in crucial biological processes.
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Affiliation(s)
- Cui-Xia Xu
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry School of Chemistry and Chemical Engineering, Sun Yat-Sen University Guangzhou, Guangdong, 510275 (P.R. China)
| | - Xiaojun Zhang
- Department of Chemistry, University of Southern California Los Angeles, California, 90089 (USA)
| | - Yi-Wei Zhou
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry School of Chemistry and Chemical Engineering, Sun Yat-Sen University Guangzhou, Guangdong, 510275 (P.R. China)
| | - Hanqiang Wang
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry School of Chemistry and Chemical Engineering, Sun Yat-Sen University Guangzhou, Guangdong, 510275 (P.R. China)
| | - Qian Cao
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry School of Chemistry and Chemical Engineering, Sun Yat-Sen University Guangzhou, Guangdong, 510275 (P.R. China)
| | - Yong Shen
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry School of Chemistry and Chemical Engineering, Sun Yat-Sen University Guangzhou, Guangdong, 510275 (P.R. China)
| | - Liang-Nian Ji
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry School of Chemistry and Chemical Engineering, Sun Yat-Sen University Guangzhou, Guangdong, 510275 (P.R. China)
| | - Zong-Wan Mao
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry School of Chemistry and Chemical Engineering, Sun Yat-Sen University Guangzhou, Guangdong, 510275 (P.R. China)
| | - Peter Z Qin
- Department of Chemistry, University of Southern California Los Angeles, California, 90089 (USA)
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28
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Zou HH, Wang L, Long ZX, Qin QP, Song ZK, Xie T, Zhang SH, Liu YC, Lin B, Chen ZF. Preparation of 4-([2,2':6',2″-terpyridin]-4'-yl)-N,N-diethylaniline Ni(II) and Pt(II) complexes and exploration of their in vitro cytotoxic activities. Eur J Med Chem 2015; 108:1-12. [PMID: 26619388 DOI: 10.1016/j.ejmech.2015.11.005] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2015] [Revised: 10/20/2015] [Accepted: 11/03/2015] [Indexed: 11/17/2022]
Abstract
Two metal complexes of NiLCl2 (1) and [PtLCl]Cl (2) with 4-([2,2':6',2″-terpyridin]-4'-yl)-N,N-diethylaniline (L) were synthesized and characterized. 1 and 2 exhibited selective cytotoxicity to T-24 cells more than L, compared with the normal liver cell line (HL-7702). Various experiments showed that L, 1 and 2 caused T-24 cell cycle arrest at S phase, as shown by the down-regulation of cdc25 A, cyclin A, cyclin B and CDK2 and the up-regulation of p21, p27 and p53. Furthermore, complexes 1 and 2, especially complex 2, acted as telomerase inhibitors targeting c-myc G-quadruplex DNA and triggered cell apoptosis. In addition, 1 and 2 also caused mitochondrial dysfunction. Taken together, we found that 1 and 2 exerted their cytotoxic activity mainly via inhibiting telomerase by interaction with c-myc quadruplex and disruption of mitochondrial function.
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Affiliation(s)
- Hua-Hong Zou
- State Key Laboratory Cultivation Base for The Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmacy, Guangxi Normal University, 15 Yucai Road, Guilin 541004, PR China.
| | - Li Wang
- State Key Laboratory Cultivation Base for The Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmacy, Guangxi Normal University, 15 Yucai Road, Guilin 541004, PR China
| | - Zhi-Xiang Long
- Guangxi Zhuang Autonomous Region Center for Analysis and Test Research, 32 Xinghu Road, Nanning 530022, PR China
| | - Qi-Pin Qin
- State Key Laboratory Cultivation Base for The Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmacy, Guangxi Normal University, 15 Yucai Road, Guilin 541004, PR China
| | - Zhong-Kui Song
- Guangxi Zhuang Autonomous Region Center for Analysis and Test Research, 32 Xinghu Road, Nanning 530022, PR China
| | - Tao Xie
- Guangxi Zhuang Autonomous Region Center for Analysis and Test Research, 32 Xinghu Road, Nanning 530022, PR China
| | - Shu-Hua Zhang
- Guangxi Key Laboratory of Electrochemical and Magnetochemical Functional Materials, College of Chemistry and Bioengineering, Guilin University of Technology, Guilin 541004, PR China
| | - Yan-Cheng Liu
- State Key Laboratory Cultivation Base for The Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmacy, Guangxi Normal University, 15 Yucai Road, Guilin 541004, PR China
| | - Bin Lin
- Nanning City No. 2 People's Hospital, 13 Dancun Road, Nanning 530031, PR China
| | - Zhen-Feng Chen
- State Key Laboratory Cultivation Base for The Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmacy, Guangxi Normal University, 15 Yucai Road, Guilin 541004, PR China
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29
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McNeill SM, Preston D, Lewis JEM, Robert A, Knerr-Rupp K, Graham DO, Wright JR, Giles GI, Crowley JD. Biologically active [Pd2L4](4+) quadruply-stranded helicates: stability and cytotoxicity. Dalton Trans 2015; 44:11129-36. [PMID: 25997516 DOI: 10.1039/c5dt01259g] [Citation(s) in RCA: 71] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
There is emerging interest in the anti-proliferative effects of metallosupramolecular systems due to the different size and shape of these metallo-architectures compared to traditional small molecule drugs. Palladium(II)-containing systems are the most abundant class of metallosupramolecular complexes, yet their biological activity has hardly been examined. Here a small series of [Pd2(L)4](BF4)4 quadruply-stranded, dipalladium(II) architectures were screened for their cytotoxic effects against three cancer cell lines and one non-malignant line. The helicates exhibited a range of cytotoxic properties, with the most cytotoxic complex [Pd2(hextrz)4](BF4)4 possessing low micromolar IC50 values against all of the cell lines tested, while the other helicates displayed moderate or no cytotoxicity. Against the MDA-MB-231 cell line, which is resistant to platinum-based drugs, [Pd2(hextrz)4](BF4)4 was 7-fold more active than cisplatin. Preliminary mechanistic studies indicate that the [Pd2(hextrz)4](BF4)4 helicate does not induce cell death in the same way as clinically used metal complexes such as cisplatin. Rather than interacting with DNA, the helicate appears to disrupt the cell membrane. These studies represent the first biological characterisation of quadruply-stranded helicate architectures, and provide insight into the design requirements for the development of biologically active and stable palladium(II)-containing metallosupramolecular architectures.
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Affiliation(s)
- Samantha M McNeill
- Department of Pharmacology and Toxicology, University of Otago, P.O. Box 913, Dunedin, New Zealand.
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30
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Chen ZF, Qin QP, Qin JL, Liu YC, Huang KB, Li YL, Meng T, Zhang GH, Peng Y, Luo XJ, Liang H. Stabilization of G-quadruplex DNA, inhibition of telomerase activity, and tumor cell apoptosis by organoplatinum(II) complexes with oxoisoaporphine. J Med Chem 2015; 58:2159-79. [PMID: 25650792 DOI: 10.1021/jm5012484] [Citation(s) in RCA: 125] [Impact Index Per Article: 13.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Two G-quadruplex ligands [Pt(L(a))(DMSO)Cl] (Pt1) and [Pt(L(b))(DMSO)Cl] (Pt2) have been synthesized and fully characterized. The two complexes are more selective for SK-OV-3/DDP tumor cells versus normal cells (HL-7702). It was found that both Pt1 and Pt2 could be a telomerase inhibitor targeting G-quadruplex DNA. This is the first report demonstrating that telomeric, c-myc, and bcl-2 G-quadruplexes and caspase-3/9 preferred to bind with Pt2 rather than Pt1, which also can induce senescence and apoptosis. The different biological behavior of Pt1 and Pt2 may correlate with the presence of a 6-hydroxyl group in L(b). Importantly, Pt1 and Pt2 exhibited higher safety in vivo and more effective inhibitory effects on tumor growth in the HCT-8 and NCI-H460 xenograft mouse model, compared with cisplatin. Taken together, these mechanistic insights indicate that both Pt1 and Pt2 display low toxicity and could be novel anticancer drug candidates.
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Affiliation(s)
- Zhen-Feng Chen
- State Key Laboratory Cultivation Base for the Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmacy, Guangxi Normal University , Yucai Road 15, Guilin 541004, P. R. China
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31
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Xu L, Chen X, Wu J, Wang J, Ji L, Chao H. Dinuclear Ruthenium(II) Complexes That Induce and Stabilise G-Quadruplex DNA. Chemistry 2015; 21:4008-20. [DOI: 10.1002/chem.201405991] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2014] [Indexed: 11/08/2022]
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32
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Xu CX, Shen Y, Hu Q, Zheng YX, Cao Q, Qin PZ, Zhao Y, Ji LN, Mao ZW. Stabilization of human telomeric G-quadruplex and inhibition of telomerase activity by propeller-shaped trinuclear Pt(II) complexes. Chem Asian J 2014; 9:2519-26. [PMID: 24996049 DOI: 10.1002/asia.201402258] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2014] [Revised: 05/15/2014] [Indexed: 12/21/2022]
Abstract
Two novel propeller-shaped, trigeminal-ligand-containing, flexible trinuclear Pt(II) complexes, {[Pt(dien)]3(ptp)}(NO3)6 (1) and {[Pt(dpa)]3(ptp)}(NO3)6 (2) (dien: diethylenetriamine; dpa: bis-(2-pyridylmethyl)amine; ptp: 6'-(pyridin-3-yl)-3,2':4',3''-terpyridine), have been designed and synthesized, and their interactions with G-quadruplex (G4) sequences are characterized. A combination of biophysical and biochemical assays reveals that both Pt(II) complexes exhibit higher affinity for human telomeric (hTel) and c-myc promoter G4 sequences than duplex DNA. Complex 1 binds and stabilizes hTel G4 sequence more effectively than complex 2. Both complexes are found to induce and stabilize either antiparallel or parallel conformation of G4 structures. Molecular docking studies indicate that complex 1 binds into the large groove of the antiparallel hTel G4 structure (PDB ID: 143D) and complex 2 stacks onto the exposed G-quartet of the parallel hTel G4 structure (PDB ID: 1KF1). Telomeric repeat amplification protocol assays demonstrate that both complexes are good telomerase inhibitors, with IC50 values of (16.0±0.4) μM and (4.20±0.25) μM for 1 and 2, respectively. Collectively, the results suggest that these propeller-shaped flexible trinuclear Pt(II) complexes are effective and selective G4 binders and good telomerase inhibitors. This work provides valuable information for the interaction between multinuclear metal complexes with G4 DNA.
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Affiliation(s)
- Cui-Xia Xu
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry and Chemical Engineering, Sun Yat-Sen University, Guangzhou, Guangdong, 510275 (China), Fax: (+86) 20-84112245
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33
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Ghosh S, Mendoza O, Cubo L, Rosu F, Gabelica V, White AJP, Vilar R. Assembly of palladium(II) and platinum(II) metallo-rectangles with a guanosine-substituted terpyridine and study of their interactions with quadruplex DNA. Chemistry 2014; 20:4772-9. [PMID: 24596127 DOI: 10.1002/chem.201304905] [Citation(s) in RCA: 79] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2013] [Revised: 01/17/2014] [Indexed: 11/07/2022]
Abstract
Two novel [2+2] metallo-assemblies based on a guanosine-substituted terpyridine ligand (1) coordinated to palladium(II) (2 a) and platinum(II) (2 b) are reported. These supramolecular assemblies have been fully characterized by NMR spectroscopy, ESI mass spectrometry and elemental analyses. The palladium(II) complex (2 a) has also been characterized by single crystal X-ray diffraction studies confirming that the system is a [2+2] metallo-rectangle in the solid state. The stabilities of these [2+2] assemblies in solution have been confirmed by DOSY studies as well as by variable temperature (1)H NMR spectroscopy. The ability of these dinuclear complexes to interact with quadruplex and duplex DNA was investigated by fluorescent intercalator displacement (FID) assays, fluorescence resonance energy transfer (FRET) melting studies, and electrospray mass spectrometry (ESI-MS). These studies have shown that both these assemblies interact selectively with quadruplex DNA (human telomeric DNA and the G-rich promoter region of c-myc oncogene) over duplex DNA, and are able to induce dimerization of parallel G-quadruplex structures.
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Affiliation(s)
- Sushobhan Ghosh
- Department of Chemistry, Imperial College London, London SW7 2AZ (UK)
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Xu CX, Zheng YX, Zheng XH, Hu Q, Zhao Y, Ji LN, Mao ZW. V-shaped dinuclear Pt(II) complexes: selective interaction with human telomeric G-quadruplex and significant inhibition towards telomerase. Sci Rep 2013; 3:2060. [PMID: 23792883 PMCID: PMC3690394 DOI: 10.1038/srep02060] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2013] [Accepted: 06/04/2013] [Indexed: 01/29/2023] Open
Abstract
A quaternized trigeminal ligand, 4-[4,6-di(4-pyridyl)-1,3,5-(2-triazinyl)]-1-methylpyridine-1-ium hexafluorophosphate (dptmp·PF6), and two derivative V-shaped dinuclear Pt(II) complexes, {[Pt(dien)]₂(dptmp)}(PF₆)₅ (1) and {[Pt(dpa)]₂(dptmp)}(PF₆)₅ (2), were synthesized, characterized and applied to a series of biochemical studies. FRET and SPR analyses showed these compounds, especially Pt(II) complexes, bound more strongly to human telomeric (hTel) G-quadruplex than to promoters (such as c-myc and bcl2) or to the duplex DNA. PCR-stop assays revealed that the Pt(II) complexes could bind to and stabilize G-quadruplex far more effectively than corresponding ligand. CD analyses further indicated the three compounds likely stabilized the formation of mixed-type parallel/antiparallel G-quadruplex structures. Their efficacy as telomerase inhibitors and potential anticancer drugs was explored via TRAP. The IC₅₀ value was determined to be 0.113 ± 0.019 μM for 1, indicating that it is one of the strongest known telomerase inhibitors. These results confirm that both V-shaped dinuclear Pt(II) complexes act as selective G-quadruplex binders and significant telomerase inhibitors.
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Affiliation(s)
- Cui-Xia Xu
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry and Chemical Engineering, Sun Yat-Sen University, Guangzhou 510275, China
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Biver T. Stabilisation of non-canonical structures of nucleic acids by metal ions and small molecules. Coord Chem Rev 2013. [DOI: 10.1016/j.ccr.2013.04.016] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Molecular basis of recognition of quadruplexes human telomere and c-myc promoter by the putative anticancer agent sanguinarine. Biochim Biophys Acta Gen Subj 2013; 1830:4189-201. [DOI: 10.1016/j.bbagen.2013.03.027] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2013] [Revised: 03/19/2013] [Accepted: 03/26/2013] [Indexed: 01/24/2023]
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Cook TR, Zheng YR, Stang PJ. Metal-organic frameworks and self-assembled supramolecular coordination complexes: comparing and contrasting the design, synthesis, and functionality of metal-organic materials. Chem Rev 2013; 113:734-77. [PMID: 23121121 PMCID: PMC3764682 DOI: 10.1021/cr3002824] [Citation(s) in RCA: 2123] [Impact Index Per Article: 193.0] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Timothy R. Cook
- Department of Chemistry, University of Utah, 315 South 1400 East, RM 2020, Salt Lake City, Utah, 84112
| | - Yao-Rong Zheng
- Department of Chemistry, University of Utah, 315 South 1400 East, RM 2020, Salt Lake City, Utah, 84112
| | - Peter J. Stang
- Department of Chemistry, University of Utah, 315 South 1400 East, RM 2020, Salt Lake City, Utah, 84112
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