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Ypsilantis K, Plakatouras JC, Manos MJ, Kourtellaris A, Markopoulos G, Kolettas E, Garoufis A. Stepwise synthesis, characterization, DNA binding properties and cytotoxicity of diruthenium oligopyridine compounds conjugated with peptides. Dalton Trans 2018; 47:3549-3567. [PMID: 29436543 DOI: 10.1039/c7dt04639a] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Although the interactions of oligopyridine ruthenium complexes with DNA have been widely studied, the biological activity of similar diruthenium oligopyridine complexes conjugated with peptides has not been investigated. Herein, we report the stepwise synthesis and characterization of diruthenium complexes with the general formula [(La)Ru(tppz)Ru(Lb)]n+ (tppz = 2,3,5,6-tetra(2-pyridyl)pyrazine, La = 2,2':6',2''-terpyridine or 4-phenyl-2,2':6',2''-terpyridine and Lb = 2,2':6',2''-terpyridine-4'-CO(Gly1-Gly2-Gly3-LysCONH2) (5), (6), n = 5; 2,2':6',2''-terpyridine-4'-CO(Gly1-Gly2-Lys1-Lys2CONH2) (7), (8), n = 6; 2,2':6',2''-terpyridine-4'-CO(Ahx-Lys1Lys2CONH2) (9), (10), n = 5, Ahx = 6-aminohexanoic acid). The compounds [(trpy)Ru(tppz)Ru(trpy-CO2H)](PF6)4, (2)(PF6)4, [(ptrpy)Ru(tppz)Ru(trpy-CO2H)](PF6)4, (3)(PF6)4 and [(ptrpy)Ru(tppz)Ru(trpy)](PF6)4, (4)(PF6)4 were also characterized by single crystal X-ray methods. Moreover, the interactions of the chloride salts (5), (6) and (4) with the self-complementary dodecanucleotide duplex d(5'-CGCGAATTCGCG-3')2 were studied by NMR spectroscopic techniques. The results show that complex (4) binds in the central part of the oligonucleotide, from the minor groove through the ligand ptrpy, while the ligand trpy, which was located on the other side of the diruthenium core, does not contribute to the binding. Complex (5) binds similarly, through the ligand ptrpy. However, the induced upfield shifts of the ptrpy proton signals are significantly lower than the corresponding ones in the case of (4), indicating much lower binding affinity. This is clear evidence that the tethered peptide Gly1-Gly2-Gly3-Lys1CONH2 hinders the complex binding, even though it contains groups that are able to assist it (e.g., the positively charged amino group of lysine, the peptidic backbone, the terminal amide). Complex (6) shows a non-specific binding, interacting through electrostatic forces. The chloride salts of (4), (5) and (6) had insignificant effects on the cell cycle distribution and marginal cytotoxicity (IC50 > 750 μM) against human lung cancer cell lines H1299 and H1437, indicating that their binding to the oligonucleotide is not a sufficient condition for their cytotoxicity.
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Affiliation(s)
- Konstantinos Ypsilantis
- Laboratory of Inorganic Chemistry, Department of Chemistry, University of Ioannina, Ioannina 45110, Greece.
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Davidson R, Liang JH, Costa Milan D, Mao BW, Nichols RJ, Higgins SJ, Yufit DS, Beeby A, Low PJ. Synthesis, Electrochemistry, and Single-Molecule Conductance of Bimetallic 2,3,5,6-Tetra(pyridine-2-yl)pyrazine-Based Complexes. Inorg Chem 2015; 54:5487-94. [DOI: 10.1021/acs.inorgchem.5b00507] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Ross Davidson
- Department of Chemistry, Durham University, South Road, Durham DH1 3LE, U.K
- Department of Chemistry, University of Liverpool, Crown Street, Liverpool L69 7ZD, U.K
- State Key Laboratory of Physical Chemistry of Solid Surfaces and College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, Fujian, China
- School of Chemistry and Biochemistry, University of Western Australia, 35 Stirling Highway, Perth, Western Australia 6009, Australia
| | - Jing-Hong Liang
- Department of Chemistry, Durham University, South Road, Durham DH1 3LE, U.K
- Department of Chemistry, University of Liverpool, Crown Street, Liverpool L69 7ZD, U.K
- State Key Laboratory of Physical Chemistry of Solid Surfaces and College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, Fujian, China
- School of Chemistry and Biochemistry, University of Western Australia, 35 Stirling Highway, Perth, Western Australia 6009, Australia
| | - David Costa Milan
- Department of Chemistry, Durham University, South Road, Durham DH1 3LE, U.K
- Department of Chemistry, University of Liverpool, Crown Street, Liverpool L69 7ZD, U.K
- State Key Laboratory of Physical Chemistry of Solid Surfaces and College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, Fujian, China
- School of Chemistry and Biochemistry, University of Western Australia, 35 Stirling Highway, Perth, Western Australia 6009, Australia
| | - Bing-Wei Mao
- Department of Chemistry, Durham University, South Road, Durham DH1 3LE, U.K
- Department of Chemistry, University of Liverpool, Crown Street, Liverpool L69 7ZD, U.K
- State Key Laboratory of Physical Chemistry of Solid Surfaces and College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, Fujian, China
- School of Chemistry and Biochemistry, University of Western Australia, 35 Stirling Highway, Perth, Western Australia 6009, Australia
| | - Richard J. Nichols
- Department of Chemistry, Durham University, South Road, Durham DH1 3LE, U.K
- Department of Chemistry, University of Liverpool, Crown Street, Liverpool L69 7ZD, U.K
- State Key Laboratory of Physical Chemistry of Solid Surfaces and College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, Fujian, China
- School of Chemistry and Biochemistry, University of Western Australia, 35 Stirling Highway, Perth, Western Australia 6009, Australia
| | - Simon J. Higgins
- Department of Chemistry, Durham University, South Road, Durham DH1 3LE, U.K
- Department of Chemistry, University of Liverpool, Crown Street, Liverpool L69 7ZD, U.K
- State Key Laboratory of Physical Chemistry of Solid Surfaces and College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, Fujian, China
- School of Chemistry and Biochemistry, University of Western Australia, 35 Stirling Highway, Perth, Western Australia 6009, Australia
| | - Dmitry S. Yufit
- Department of Chemistry, Durham University, South Road, Durham DH1 3LE, U.K
- Department of Chemistry, University of Liverpool, Crown Street, Liverpool L69 7ZD, U.K
- State Key Laboratory of Physical Chemistry of Solid Surfaces and College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, Fujian, China
- School of Chemistry and Biochemistry, University of Western Australia, 35 Stirling Highway, Perth, Western Australia 6009, Australia
| | - Andrew Beeby
- Department of Chemistry, Durham University, South Road, Durham DH1 3LE, U.K
- Department of Chemistry, University of Liverpool, Crown Street, Liverpool L69 7ZD, U.K
- State Key Laboratory of Physical Chemistry of Solid Surfaces and College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, Fujian, China
- School of Chemistry and Biochemistry, University of Western Australia, 35 Stirling Highway, Perth, Western Australia 6009, Australia
| | - Paul J. Low
- Department of Chemistry, Durham University, South Road, Durham DH1 3LE, U.K
- Department of Chemistry, University of Liverpool, Crown Street, Liverpool L69 7ZD, U.K
- State Key Laboratory of Physical Chemistry of Solid Surfaces and College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, Fujian, China
- School of Chemistry and Biochemistry, University of Western Australia, 35 Stirling Highway, Perth, Western Australia 6009, Australia
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Nagashima T, Nakabayashi T, Suzuki T, Kanaizuka K, Ozawa H, Zhong YW, Masaoka S, Sakai K, Haga MA. Tuning of Metal–Metal Interactions in Mixed-Valence States of Cyclometalated Dinuclear Ruthenium and Osmium Complexes Bearing Tetrapyridylpyrazine or -benzene. Organometallics 2014. [DOI: 10.1021/om500142t] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Takumi Nagashima
- Department of Applied Chemistry, Faculty of
Science and Engineering, Chuo University, 1-13-27 Kasuga,
Bunkyo-ku, Tokyo 112-8551, Japan
| | - Takuya Nakabayashi
- Department of Applied Chemistry, Faculty of
Science and Engineering, Chuo University, 1-13-27 Kasuga,
Bunkyo-ku, Tokyo 112-8551, Japan
| | - Takashi Suzuki
- Department of Applied Chemistry, Faculty of
Science and Engineering, Chuo University, 1-13-27 Kasuga,
Bunkyo-ku, Tokyo 112-8551, Japan
| | - Katsuhiko Kanaizuka
- Department of Applied Chemistry, Faculty of
Science and Engineering, Chuo University, 1-13-27 Kasuga,
Bunkyo-ku, Tokyo 112-8551, Japan
| | - Hiroaki Ozawa
- Department of Applied Chemistry, Faculty of
Science and Engineering, Chuo University, 1-13-27 Kasuga,
Bunkyo-ku, Tokyo 112-8551, Japan
| | - Yu-Wu Zhong
- Beijing National Laboratory for
Molecular Sciences,
CAS Key Laboratory of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, People’s Republic of China
| | - Shigeyuki Masaoka
- Institute
for Molecular Science, National Institutes of Natural Sciences, 5-1 Higashiyama, Myodaiji, Okazaki 444-8787, Japan
| | - Ken Sakai
- Department of Chemistry, Faculty of Science, Kyushu University, Hakozaki
6-10-1, Higashi-ku, Fukuoka 812-8581, Japan
| | - Masa-aki Haga
- Department of Applied Chemistry, Faculty of
Science and Engineering, Chuo University, 1-13-27 Kasuga,
Bunkyo-ku, Tokyo 112-8551, Japan
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