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Xi D, Lu C, Jing D, Zheng K. Carbothiolation of Styrenes by Visible‐Light‐Induced Thiyl Radicals: C3‐Functionalization of Benzofuran‐2(3H)‐ones. European J Org Chem 2022. [DOI: 10.1002/ejoc.202200688] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Dailin Xi
- Sichuan University Chemistry 610064 Chengdu CHINA
| | - Cong Lu
- Sichuan University Chemistry 610064 Chengdu CHINA
| | - Dong Jing
- Sichuan University Chemistry 610064 Chengdu CHINA
| | - Ke Zheng
- Sichuan University College of Chemistry wangjiang road 29# 610064 chengdu CHINA
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2
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Bhari VK, Kumar D, Kumar S, Mishra R. Shelterin complex gene: Prognosis and therapeutic vulnerability in cancer. Biochem Biophys Rep 2021; 26:100937. [PMID: 33553693 PMCID: PMC7859307 DOI: 10.1016/j.bbrep.2021.100937] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2020] [Revised: 01/08/2021] [Accepted: 01/25/2021] [Indexed: 02/06/2023] Open
Abstract
Telomere encompasses a (TTAGGG)n tandem repeats, and its dysfunction has emerged as the epicenter of driving carcinogenesis by promoting genetic instability. Indeed, they play an essential role in stabilizing chromosomes and therefore protecting them from end-to-end fusion and DNA degradation. Telomere length homeostasis is regulated by several key players including shelterin complex genes, telomerase, and various other regulators. Targeting these regulatory players can be a good approach to combat cancer as telomere length is increasingly correlated with cancer initiation and progression. In this review, we have aimed to describe the telomere length regulator's role in prognostic significance and important drug targets in breast cancer. Moreover, we also assessed alteration in telomeric function by various telomere length regulators and compares this to the regulatory mechanisms that can be associated with clinical biomarkers in cancer. Using publicly available software we summarized mutational and CpG island prediction analysis of the TERT gene breast cancer patient database. Studies have reported that the TERT gene has prognostic significance in breast cancer progression however mechanistic approaches are not defined yet. Interestingly, we reported using the UCSC Xena web-based tool, we confirmed a positive correlation of shelterin complex genes TERF1 and TERF2 in recurrent free survival, indicating the critical role of these genes in breast cancer prognosis. Moreover, the epigenetic landscape of DNA damage repair genes in different breast cancer subtypes also being analyzed using the UCSC Xena database. Together, these datasets provide a comprehensive resource for shelterin complex gene profiles and define epigenetic landscapes of DNA damage repair genes which reveals the key role of shelterin complex genes in breast cancer with the potential to identify novel and actionable targets for treatment.
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Affiliation(s)
- Vikas Kumar Bhari
- Department of Biosciences, Manipal University Jaipur, Rajasthan, India
| | - Durgesh Kumar
- Department of Physiology, Government Medical College, Kannauj, Uttar Pradesh, India
| | - Surendra Kumar
- Department of Neurology, Rajendra Institute of Medical Sciences, Ranchi, Jharkhand, India
| | - Rajeev Mishra
- Department of Biosciences, Manipal University Jaipur, Rajasthan, India
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3
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Gratal PB, Quero JG, Pérez-Redondo A, Gándara Z, Gude L. PhenQE8, a Novel Ligand of the Human Telomeric Quadruplex. Int J Mol Sci 2021; 22:E749. [PMID: 33451070 PMCID: PMC7828518 DOI: 10.3390/ijms22020749] [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: 11/30/2020] [Revised: 12/30/2020] [Accepted: 01/10/2021] [Indexed: 01/02/2023] Open
Abstract
A novel quadruplex ligand based on 1,10-phenanthroline and incorporating two guanyl hydrazone functionalities, PhenQE8, is reported herein. Synthetic access was gained in a two-step procedure with an overall yield of 61%. X-ray diffraction studies revealed that PhenQE8 can adopt an extended conformation that may be optimal to favor recognition of quadruplex DNA. DNA interactions with polymorphic G-quadruplex telomeric structures were studied by different techniques, such as Fluorescence resonance energy transfer (FRET) DNA melting assays, circular dichroism and equilibrium dialysis. Our results reveal that the novel ligand PhenQE8 can efficiently recognize the hybrid quadruplex structures of the human telomeric DNA, with high binding affinity and quadruplex/duplex selectivity. Moreover, the compound shows significant cytotoxic activity against a selected panel of cultured tumor cells (PC-3, HeLa and MCF-7), whereas its cytotoxicity is considerably lower in healthy human cells (HFF-1 and RPWE-1).
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Affiliation(s)
| | | | | | - Zoila Gándara
- Departamento de Química Orgánica y Química Inorgánica, Instituto de Investigación Química “Andrés M. del Río” (IQAR), Universidad de Alcalá, 28805 Alcalá de Henares, Madrid, Spain; (P.B.G.); (J.G.Q.); (A.P.-R.)
| | - Lourdes Gude
- Departamento de Química Orgánica y Química Inorgánica, Instituto de Investigación Química “Andrés M. del Río” (IQAR), Universidad de Alcalá, 28805 Alcalá de Henares, Madrid, Spain; (P.B.G.); (J.G.Q.); (A.P.-R.)
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4
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Singh M, Wang S, Joo H, Ye Z, Christison KM, Hekman R, Vierra C, Xue L. Use of neomycin as a structured amino-containing side chain motif for phenanthroline-based G-quadruplex ligands and telomerase inhibitors. Chem Biol Drug Des 2020; 96:1292-1304. [PMID: 32516846 DOI: 10.1111/cbdd.13741] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2020] [Revised: 05/05/2020] [Accepted: 05/31/2020] [Indexed: 01/05/2023]
Abstract
In this paper, we report the synthesis of a phenanthroline and neomycin conjugate (7). Compound 7 binds to a human telomeric G-quadruplex (G1) with a higher affinity compared with its parent compounds (phenanthroline and neomycin), which is determined by several biophysical studies. Compound 7 shows good selectivity for G-quadruplex (G4) DNA over duplex DNA. The binding of 7 with G1 is predominantly enthalpy-driven, and the binding stoichiometry of 7 with G1 is one for the tight-binding event as determined by ESI mass spectrometry. A plausible binding mode is a synergistic effect of end-stacking and groove interactions, as indicated by docking studies. Compound 7 can inhibit human telomerase activity at low micromolar concentrations, which is more potent than previously reported 5-substituted phenanthroline derivatives.
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Affiliation(s)
- Mandeep Singh
- Department of Chemistry, University of the Pacific, Stockton, CA, USA
| | - Siwen Wang
- Department of Chemistry, University of the Pacific, Stockton, CA, USA
| | - Hyun Joo
- Department of Chemistry, University of the Pacific, Stockton, CA, USA
| | - Zhihan Ye
- Department of Chemistry, University of the Pacific, Stockton, CA, USA
| | | | - Ryan Hekman
- Department of Biological Sciences, University of the Pacific, Stockton, CA, USA
| | - Craig Vierra
- Department of Biological Sciences, University of the Pacific, Stockton, CA, USA
| | - Liang Xue
- Department of Chemistry, University of the Pacific, Stockton, CA, USA
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5
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Butkus JM, Pytko KG, Stead CE, Basu S. Binding of quadruplex DNA to nickel and zinc complexes monitored by surface-enhanced raman and fluorescence spectroscopy. J Photochem Photobiol A Chem 2020. [DOI: 10.1016/j.jphotochem.2020.112513] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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6
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Jiang X, Zhao Z, Shen Z, Chen K, Fang L, Yu C. Flavin/I2
-Catalyzed Aerobic Oxidative C-H Sulfenylation of Aryl-Fused Cyclic Amines. European J Org Chem 2020. [DOI: 10.1002/ejoc.202000508] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Xinpeng Jiang
- College of Pharmaceutical Sciences; Zhejiang University of Technology; Hangzhou P.R. China
| | - Zongchen Zhao
- College of Pharmaceutical Sciences; Zhejiang University of Technology; Hangzhou P.R. China
| | - Zhifeng Shen
- College of Pharmaceutical Sciences; Zhejiang University of Technology; Hangzhou P.R. China
| | - Keda Chen
- Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals; Zhejiang University of Technology; Hangzhou P.R. China
| | - Liyun Fang
- College of Pharmaceutical Sciences; Zhejiang University of Technology; Hangzhou P.R. China
| | - Chuanming Yu
- College of Pharmaceutical Sciences; Zhejiang University of Technology; Hangzhou P.R. China
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7
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Thiazole orange – Spermine conjugate: A potent human telomerase inhibitor comparable to BRACO-19. Eur J Med Chem 2019; 175:20-33. [DOI: 10.1016/j.ejmech.2019.04.041] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2019] [Revised: 03/31/2019] [Accepted: 04/14/2019] [Indexed: 11/17/2022]
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8
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Raising the bar in anticancer therapy: recent advances in, and perspectives on, telomerase inhibitors. Drug Discov Today 2019; 24:1370-1388. [PMID: 31136800 DOI: 10.1016/j.drudis.2019.05.015] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2019] [Revised: 05/02/2019] [Accepted: 05/21/2019] [Indexed: 02/06/2023]
Abstract
Telomerase is a ribonucleic reverse transcriptase enzyme that uses an integral RNA component as a template to add tandem telomeric DNA repeats, TTAGGG, at the 3' end of the chromosomes. 85-90% of human tumors and their derived cell lines predominantly express high levels of telomerase, therefore contributing to cancer cell development. However, in normal cells, telomerase activity is almost always absent except in germ cells and stem cells. This differential expression has been exploited to develop highly specific and potent cancer therapeutics. In this review, we outline recent advances in the development of telomerase inhibitors as anticancer agents.
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Tan Z, Liang Y, Yang J, Cao L, Jiang H, Zhang M. Site-Specific Oxidative C–H Chalcogenation of (Hetero)Aryl-Fused Cyclic Amines Enabled by Nanocobalt Oxides. Org Lett 2018; 20:6554-6558. [DOI: 10.1021/acs.orglett.8b02889] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Zhenda Tan
- Key Lab of Functional Molecular Engineering of Guangdong Province, School of Chemistry & Chemical Engineering, South China University of Technology, Wushan Road 381, Guangzhou 510641, People’s Republic of China
| | - Yantang Liang
- Key Lab of Functional Molecular Engineering of Guangdong Province, School of Chemistry & Chemical Engineering, South China University of Technology, Wushan Road 381, Guangzhou 510641, People’s Republic of China
| | - Jian Yang
- Key Lab of Functional Molecular Engineering of Guangdong Province, School of Chemistry & Chemical Engineering, South China University of Technology, Wushan Road 381, Guangzhou 510641, People’s Republic of China
| | - Liang Cao
- Key Lab of Functional Molecular Engineering of Guangdong Province, School of Chemistry & Chemical Engineering, South China University of Technology, Wushan Road 381, Guangzhou 510641, People’s Republic of China
| | - Huanfeng Jiang
- Key Lab of Functional Molecular Engineering of Guangdong Province, School of Chemistry & Chemical Engineering, South China University of Technology, Wushan Road 381, Guangzhou 510641, People’s Republic of China
| | - Min Zhang
- Key Lab of Functional Molecular Engineering of Guangdong Province, School of Chemistry & Chemical Engineering, South China University of Technology, Wushan Road 381, Guangzhou 510641, People’s Republic of China
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10
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Wang S, Singh M, Ling M, Li D, Christison KM, Lin-Cereghino J, Lin-Cereghino GP, Xue L. Synthesis of nucleobase-neomycin conjugates and evaluation of their DNA binding, cytotoxicities, and antibacterial properties. Med Chem Res 2018. [DOI: 10.1007/s00044-018-2169-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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11
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Kosbar TR, Abou-Zeid L, Sofan MA. Synthesis, Biological Evaluation, and Molecular Docking Studies of Novel Pyrazolo[3,4-d
]pyrimidines as Potential Telomerase Inhibitors. J Heterocycl Chem 2018. [DOI: 10.1002/jhet.3094] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Affiliation(s)
- Tamer R. Kosbar
- Department of Chemistry, Faculty of Science; Damietta University; 34517 New Damietta Egypt
| | - Laila Abou-Zeid
- Department of Pharmaceutical Organic Chemistry, Faculty of Pharmacy; Mansoura University; 35516 Mansoura Egypt
- Medicinal Chemistry Department, Faculty of Pharmacy; Delta University; Mansoura Egypt
| | - Mamdouh A. Sofan
- Department of Chemistry, Faculty of Science; Damietta University; 34517 New Damietta Egypt
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