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V-Shaped Dinuclear Pt(II) Complexes: Selective Interaction with Human Telomeric G-quadruplex and Significant Inhibition towards Telomerase

A quaternized trigeminal ligand, 4-[4,6-di(4-pyridyl)-1,3,5-(2-triazinyl)]-1-methylpyridine-1-ium hexafluorophosphate (dptmp·PF(6)), and two derivative V-shaped dinuclear Pt(II) complexes, {[Pt(dien)](2)(dptmp)}(PF(6))(5) (1) and {[Pt(dpa)](2)(dptmp)}(PF(6))(5) (2), were synthesized, characterized a...

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Autores principales: Xu, Cui-Xia, Zheng, Yu-Xuan, Zheng, Xiao-Hui, Hu, Qian, Zhao, Yong, Ji, Liang-Nian, Mao, Zong-Wan
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2013
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3690394/
https://www.ncbi.nlm.nih.gov/pubmed/23792883
http://dx.doi.org/10.1038/srep02060
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author Xu, Cui-Xia
Zheng, Yu-Xuan
Zheng, Xiao-Hui
Hu, Qian
Zhao, Yong
Ji, Liang-Nian
Mao, Zong-Wan
author_facet Xu, Cui-Xia
Zheng, Yu-Xuan
Zheng, Xiao-Hui
Hu, Qian
Zhao, Yong
Ji, Liang-Nian
Mao, Zong-Wan
author_sort Xu, Cui-Xia
collection PubMed
description A quaternized trigeminal ligand, 4-[4,6-di(4-pyridyl)-1,3,5-(2-triazinyl)]-1-methylpyridine-1-ium hexafluorophosphate (dptmp·PF(6)), and two derivative V-shaped dinuclear Pt(II) complexes, {[Pt(dien)](2)(dptmp)}(PF(6))(5) (1) and {[Pt(dpa)](2)(dptmp)}(PF(6))(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 IC(50) 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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spelling pubmed-36903942013-06-24 V-Shaped Dinuclear Pt(II) Complexes: Selective Interaction with Human Telomeric G-quadruplex and Significant Inhibition towards Telomerase Xu, Cui-Xia Zheng, Yu-Xuan Zheng, Xiao-Hui Hu, Qian Zhao, Yong Ji, Liang-Nian Mao, Zong-Wan Sci Rep Article A quaternized trigeminal ligand, 4-[4,6-di(4-pyridyl)-1,3,5-(2-triazinyl)]-1-methylpyridine-1-ium hexafluorophosphate (dptmp·PF(6)), and two derivative V-shaped dinuclear Pt(II) complexes, {[Pt(dien)](2)(dptmp)}(PF(6))(5) (1) and {[Pt(dpa)](2)(dptmp)}(PF(6))(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 IC(50) 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. Nature Publishing Group 2013-06-24 /pmc/articles/PMC3690394/ /pubmed/23792883 http://dx.doi.org/10.1038/srep02060 Text en Copyright © 2013, Macmillan Publishers Limited. All rights reserved http://creativecommons.org/licenses/by-nc-sa/3.0/ This work is licensed under a Creative Commons Attribution-NonCommercial-ShareALike 3.0 Unported License. To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-sa/3.0/
spellingShingle Article
Xu, Cui-Xia
Zheng, Yu-Xuan
Zheng, Xiao-Hui
Hu, Qian
Zhao, Yong
Ji, Liang-Nian
Mao, Zong-Wan
V-Shaped Dinuclear Pt(II) Complexes: Selective Interaction with Human Telomeric G-quadruplex and Significant Inhibition towards Telomerase
title V-Shaped Dinuclear Pt(II) Complexes: Selective Interaction with Human Telomeric G-quadruplex and Significant Inhibition towards Telomerase
title_full V-Shaped Dinuclear Pt(II) Complexes: Selective Interaction with Human Telomeric G-quadruplex and Significant Inhibition towards Telomerase
title_fullStr V-Shaped Dinuclear Pt(II) Complexes: Selective Interaction with Human Telomeric G-quadruplex and Significant Inhibition towards Telomerase
title_full_unstemmed V-Shaped Dinuclear Pt(II) Complexes: Selective Interaction with Human Telomeric G-quadruplex and Significant Inhibition towards Telomerase
title_short V-Shaped Dinuclear Pt(II) Complexes: Selective Interaction with Human Telomeric G-quadruplex and Significant Inhibition towards Telomerase
title_sort v-shaped dinuclear pt(ii) complexes: selective interaction with human telomeric g-quadruplex and significant inhibition towards telomerase
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3690394/
https://www.ncbi.nlm.nih.gov/pubmed/23792883
http://dx.doi.org/10.1038/srep02060
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