期刊
EUROPEAN JOURNAL OF MEDICINAL CHEMISTRY
卷 143, 期 -, 页码 1387-1395出版社
ELSEVIER FRANCE-EDITIONS SCIENTIFIQUES MEDICALES ELSEVIER
DOI: 10.1016/j.ejmech.2017.10.035
关键词
4'-substituted-2,2':6',2 ''-terpyridine; Iridium(III) complexes; Cell apoptosis; Antitumor activity; Telomerase activity
资金
- National Natural Science Foundation of China [21261025, 21761033]
- Key Foundation Project of Colleges and Universities in Guangxi [ZD2014108]
- Innovative Team & Outstanding Talent Program of Colleges and Universities in Guangxi [2014-49, 2017-38]
- project of guibei characteristic medicine resources research center of Guangxi Province [KYA201703]
- basic skills improvement project for the young and middle-aged teachers in Guangxi colleges and universities [KY2016YB595]
- State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources, Ministry of Science and Technology of China [CMEMR2017-817]
- [IRT_16R15]
There iridium(III) complexes, [Ir(3-MeO-Phtpy)Cl-3] (1), [Ir(2-MeO-Phtpy)Cl-3] (2) and [Ir(4-MeO-Phtpy)Cl-3] (3) with 4'-(3-methoxyphenyl)-2,2':6',2 ''-terpyridine (3-MeO-Phtpy), 4'-(2-methoxyphenyl)-2,2':6',2 ''-terpyridine (2-MeO-Phtpy) and 4'-(4-methoxyphenyl)-2,2':6',2 ''-terpyridine (4-MeO-Phtpy) as ligands, respectively, were synthesized and evaluated for their antiproliferative activities. In these complexes, the iridium(III) center adopts a six-coordinate distorted octahedral geometry. Among them, complex 1 exhibited the most potent activity, with IC50 values of 3.19-27.77 mu M against four cancer cell lines (BEL-7404, Hep-G2, NCI-H460 and MGC80-3 cells). Cellular mechanism studies suggested that complexes 1-3 directly targeted c-myc promoter elements and inhibited the telomerase activity. In addition, complexes 1-3 may trigger cell apoptosis via a mitochondrial dysfunction pathway. We postulated that the difference in the in vitro antitumor activities of complexes 1-3 is mainly dependent on the position of the methoxy group on the phenyl ring of the iridium ligand. (C) 2017 Elsevier Masson SAS. All rights reserved.
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