Copper chloride complexes with substituted 4′-phenyl-terpyridine ligands: synthesis, characterization, antiproliferative activities and DNA interactions

被引:31
作者
Li, Jiahe [1 ,2 ,3 ]
Yan, Hao [4 ]
Wang, Zhiyuan [1 ]
Liu, Rongping [1 ]
Luo, Baomei [1 ]
Yang, Dengfeng [5 ]
Chen, Hailan [4 ]
Pan, Lixia [2 ]
Ma, Zhen [1 ,3 ]
机构
[1] Guangxi Univ, Sch Chem & Chem Engn, Nanning 530004, Guangxi, Peoples R China
[2] Guangxi Acad Sci, State Key Lab Nonfood Biomass & Enzyme Technol, Natl Engn Res Ctr Nonfood Biorefinery, Nanning 530007, Guangxi, Peoples R China
[3] Univ Lisbon, Inst Super Tecn, Ctr Quim Estrutural, Ave Rovisco Pais, P-1049001 Lisbon, Portugal
[4] Guangxi Univ, Sch Anim Sci & Technol, Nanning 530004, Guangxi, Peoples R China
[5] Guangxi Acad Sci, Guangxi Beibu Gulf Marine Res Ctr, Guangxi Key Lab Marine Nat Prod & Combinatorial B, Nanning 530007, Guangxi, Peoples R China
基金
中国国家自然科学基金;
关键词
RAY CRYSTAL-STRUCTURE; IN-VITRO; ANTICANCER ACTIVITY; MOLECULAR DOCKING; PLATINUM(II) COMPLEXES; CYTOTOXIC ACTIVITY; BINDING PROPERTIES; THERMAL-PROPERTIES; TRYPANOSOMA-CRUZI; NUCLEASE ACTIVITY;
D O I
10.1039/d0dt03989f
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
Eleven copper chloride coordination compounds (1-11) with 4'-(4'-substituted-phenyl)-2,2':6',2 ''-terpyridine ligands bearing hydrogen (L-1), cyano (L-2), p-hydroxyl (L-3), m-hydroxyl (L-4), o-hydroxyl (L-5), methoxyl (L-6), iodo (L-7), bromo (L-8), chloro (L-9), fluoro (L-10) or methylsulfonyl (L-11) were prepared and characterized by IR spectroscopy, elemental analysis and single crystal X-ray diffraction. Antiproliferative activities against tumor cells were investigated and DNA interactions were studied by circular dichroism spectroscopy and molecular modeling methods. In vitro data demonstrate that all the compounds exhibit higher antiproliferative activities as compared to cisplatin against five human carcinoma cell lines: A549, Bel-7402, Eca-109, HeLa and MCF-7. Compound 6 with methoxyl shows the best anti-proliferation activity. Spectrophotometric results reveal the strong affinity of the compounds for binding with DNA as intercalators and induce DNA conformational transitions. The results of molecular docking studies show that the compounds interact with DNA through pi-pi stacking, van der Waals forces, hydrophobic interactions and hydrogen bonds. The binding energies between compound 11 and three macromolecules, including DNA duplex, oligonucleotide and DNA-Topo I complex, are the lowest. The binding stability of compounds containing hydroxyl, methoxy and methylsulfonyl groups with biological macromolecules mainly relies on the hydrogen bonds. The ability of a compound to form hydrogen bonds can promote its binding to biological targets, thereby exhibiting high antiproliferative activity.
引用
收藏
页码:8243 / 8257
页数:15
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