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Pokidova OV, Novikova VO, Emel'yanova NS, Kormukhina AY, Kulikov AV, Utenyshev AN, Lazarenko VA, Ovanesyan NS, Starostina AA, Sanina NA. A nitrosyl iron complex with 3.4-dichlorothiophenolyl ligands: synthesis, structures and its reactions with targets - carriers of nitrogen oxide (NO) in vivo. Dalton Trans 2023; 52:2641-2662. [PMID: 36744818 DOI: 10.1039/d2dt04047f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
In this work, a new binuclear nitrosyl complex with 3.4-dichlorothiophenolyl ligands [Fe2(SC6H3Cl2)2(NO)4] has been synthesized. Nitrosyl iron complexes (NICs) are systems for the storage and delivery of NO in the body. There is a dynamic equilibrium between dinitrosyl iron units bound to low molecular weight ligands and high molecular weight (protein) ligands in vivo. From this point of view, the transformation of the studied complex in DMSO and buffer, as well as in biological systems, has been analyzed. In DMSO, it decomposes into mononuclear NICs, which quickly decay in buffer solutions with NO release. The high molecular weight product is formed as a result of the binding of the complex to bovine serum albumin (the Stern-Volmer constant is 2.1 × 105 M-1). In this case, the complex becomes a prolonged NO-donor. Such a long-term effect has been observed for the first time. Similarly, in a system with oxyhemoglobin, NO generation is slower; the UV-vis spectra show a gradual formation of methemoglobin. On the other hand, reduced glutathione has little effect on the NO-donor properties of the complex despite the fact that ligand substitution is observed in the system and a binuclear product is formed. Mucin binds the complex, and the decomposition mechanism is different from that for buffer solutions. Thus, these proteins and glutathione are able to participate in the transformation of the complex and modulate its properties as a potential drug.
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Affiliation(s)
- Olesya V Pokidova
- Federal Research Center of Problems of Chemical Physics and Medicinal Chemistry, Russian Academy of Sciences, prosp. Akad. Semenova, 1., 142432 Chernogolovka, Moscow region, Russian Federation.
| | - Veronika O Novikova
- Federal Research Center of Problems of Chemical Physics and Medicinal Chemistry, Russian Academy of Sciences, prosp. Akad. Semenova, 1., 142432 Chernogolovka, Moscow region, Russian Federation.
| | - Nina S Emel'yanova
- Federal Research Center of Problems of Chemical Physics and Medicinal Chemistry, Russian Academy of Sciences, prosp. Akad. Semenova, 1., 142432 Chernogolovka, Moscow region, Russian Federation.
| | - Alexandra Yu Kormukhina
- Federal Research Center of Problems of Chemical Physics and Medicinal Chemistry, Russian Academy of Sciences, prosp. Akad. Semenova, 1., 142432 Chernogolovka, Moscow region, Russian Federation. .,Faculty of Fundamental Physical and Chemical Engineering, Lomonosov Moscow State University M.V. Lomonosov, Leninskie gory, 1., 119991 Moscow, Russian Federation
| | - Alexander V Kulikov
- Federal Research Center of Problems of Chemical Physics and Medicinal Chemistry, Russian Academy of Sciences, prosp. Akad. Semenova, 1., 142432 Chernogolovka, Moscow region, Russian Federation. .,Faculty of Fundamental Physical and Chemical Engineering, Lomonosov Moscow State University M.V. Lomonosov, Leninskie gory, 1., 119991 Moscow, Russian Federation
| | - Andrey N Utenyshev
- Federal Research Center of Problems of Chemical Physics and Medicinal Chemistry, Russian Academy of Sciences, prosp. Akad. Semenova, 1., 142432 Chernogolovka, Moscow region, Russian Federation.
| | - Vladimir A Lazarenko
- National Research Center 'Kurchatov Institute', pl. Academician Kurchatov, 1, 123182, Moscow, Russian Federation
| | - Nikolai S Ovanesyan
- Federal Research Center of Problems of Chemical Physics and Medicinal Chemistry, Russian Academy of Sciences, prosp. Akad. Semenova, 1., 142432 Chernogolovka, Moscow region, Russian Federation.
| | - Arina A Starostina
- Faculty of Fundamental Physical and Chemical Engineering, Lomonosov Moscow State University M.V. Lomonosov, Leninskie gory, 1., 119991 Moscow, Russian Federation
| | - Natalya A Sanina
- Federal Research Center of Problems of Chemical Physics and Medicinal Chemistry, Russian Academy of Sciences, prosp. Akad. Semenova, 1., 142432 Chernogolovka, Moscow region, Russian Federation. .,Faculty of Fundamental Physical and Chemical Engineering, Lomonosov Moscow State University M.V. Lomonosov, Leninskie gory, 1., 119991 Moscow, Russian Federation.,Scientific and Educational Center "Medical Chemistry", Moscow State Regional Pedagogical University, st. Vera Voloshina, 24, 141014 Mytishchi, Moscow Region, Russian Federation
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Effect of solvents and glutathione on the decomposition of the nitrosyl iron complex with N-ethylthiourea ligands: An experimental and theoretical study. J Inorg Biochem 2022; 235:111926. [PMID: 35843200 DOI: 10.1016/j.jinorgbio.2022.111926] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2022] [Revised: 06/24/2022] [Accepted: 07/04/2022] [Indexed: 11/22/2022]
Abstract
Dinitrosyl iron complexes (DNICs) are a depot and potential source of free NO in organisms. Their synthetic analog, N-ethylthiourea DNIC [Fe(SC(NH2)(NHC2H5))2(NO)2]+Cl-∙[Fe(SC(NH2)(NHC2H5))Cl(NO)2]0 (complex 1), as cardioprotective and cytostatic agent is a promising prodrug for the treatment of socially relevant diseases. In this work, transformation mechanism of complex 1 has been studied in anaerobic aqueous solution (pH = 7.0), DMSO, and ethanol. It was shown that the solvent has a significant effect on the decomposition of complex. According to EPR-spectroscopy, only cationic part of complex is found upon its dissolution in water; only neutral part is retained in DMSO, and both fragments are present in ethanol. Effective generation of NO occurs in an aqueous solution. The structures of the decomposition products were proposed for all solvents, their UV-spectra and rate constants were calculated. From the experimental and theoretical data obtained, it follows that complex 1 is most stable in DMSO. Solutions of complex in a DMSO-water mixture can be used to improve its bioavailability in further in vitro and in vivo studies. Also, we have analyzed its interaction with glutathione (GSH), which can participate in the metabolism of this compound. This study shows that complex 1 reacts with GSH to form a new binuclear DNIC with two GS--ligands. It was found that the resulting complex is a more prolonged NO-donor than the initial one: k = 6.1∙10-3·s-1 in buffer, k = 6.4∙10-5 s-1 with GSH. This reaction may prevent S-glutathionylation of the essential enzyme systems and is important for metabolism of complex, associated with its antitumor activity.
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Pokidova OV, Emel'yanova NS, Kormukhina AY, Novikova VO, Kulikov AV, Kotelnikov AI, Sanina NA. Albumin as a prospective carrier of the nitrosyl iron complex with thiourea and thiosulfate ligands under aerobic conditions. Dalton Trans 2022; 51:6473-6485. [PMID: 35394482 DOI: 10.1039/d2dt00291d] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
High-molecular-weight dinitrosyl iron complexes (DNICs) are formed in living systems and are a stable depot of nitrogen monoxide (NO). In this work, using experimental and theoretical methods, we investigated the interaction of their synthetic analog, a promising cardiotropic complex of the composition [Fe(SC(NH2)2)2(NO)2]2[Fe2(S2O3)2(NO)4], with bovine serum albumin (BSA) in aqueous aerobic solutions. We suggested that, under these conditions, the decomposition product of the initial complex with oxygen, the [Fe(NO)(NO2)]+ fragment, can bind in the hydrophobic pocket of the protein. As a result of this interaction, high-molecular-weight Fe(Cys34)(His39)(NO)(NO2) is formed. The binding constant of the complex with protein measured by the quenching of intrinsic fluorescence of BSA is 7.2 × 105 M-1. According to EPR and UV-spectroscopy data, the interaction of the complex with the protein leads to its significant stabilization. In addition to coordination binding, the studied complex can be adsorbed onto the protein surface due to weak intermolecular interactions, resulting in the prolonged generation of NO.
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Affiliation(s)
- Olesya V Pokidova
- Institute of Problems of Chemical Physics, Russian Academy of Sciences, 1 prosp. Acad. Semenova, 142432 Chernogolovka, Moscow Region, Russian Federation.
| | - Nina S Emel'yanova
- Institute of Problems of Chemical Physics, Russian Academy of Sciences, 1 prosp. Acad. Semenova, 142432 Chernogolovka, Moscow Region, Russian Federation. .,Faculty of Fundamental Physical and Chemical Engineering, Lomonosov Moscow State University, GSP-1, Leninskie Gory, 119991 Moscow, Russian Federation
| | - Alexandra Yu Kormukhina
- Faculty of Fundamental Physical and Chemical Engineering, Lomonosov Moscow State University, GSP-1, Leninskie Gory, 119991 Moscow, Russian Federation
| | - Veronika O Novikova
- Institute of Problems of Chemical Physics, Russian Academy of Sciences, 1 prosp. Acad. Semenova, 142432 Chernogolovka, Moscow Region, Russian Federation.
| | - Alexander V Kulikov
- Institute of Problems of Chemical Physics, Russian Academy of Sciences, 1 prosp. Acad. Semenova, 142432 Chernogolovka, Moscow Region, Russian Federation. .,Faculty of Fundamental Physical and Chemical Engineering, Lomonosov Moscow State University, GSP-1, Leninskie Gory, 119991 Moscow, Russian Federation
| | - Alexander I Kotelnikov
- Institute of Problems of Chemical Physics, Russian Academy of Sciences, 1 prosp. Acad. Semenova, 142432 Chernogolovka, Moscow Region, Russian Federation. .,Faculty of Fundamental Physical and Chemical Engineering, Lomonosov Moscow State University, GSP-1, Leninskie Gory, 119991 Moscow, Russian Federation
| | - Natalia A Sanina
- Institute of Problems of Chemical Physics, Russian Academy of Sciences, 1 prosp. Acad. Semenova, 142432 Chernogolovka, Moscow Region, Russian Federation. .,Faculty of Fundamental Physical and Chemical Engineering, Lomonosov Moscow State University, GSP-1, Leninskie Gory, 119991 Moscow, Russian Federation.,Scientific and Educational Center "Medical Chemistry" of Moscow State Regional University, 24 Vera Voloshina St., 141014 Mytishchi, Moscow Region, Russian Federation
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Sanina NA, Isaeva YA, Utenyshev AN, Dorovatovskii PV, Ovanesyan NS, Emel'yanova NS, Pokidova OV, Tat'yanenko LV, Sulimenkov IV, Kotel'nikov AI, Aldoshin SM. Synthesis, structure, and PDE inhibiting activity of the anionic DNIC with 5-(3-pyridyl)-4H-1,2,4-triazole-3-thiolyl, the nitric oxide donor. Inorganica Chim Acta 2021. [DOI: 10.1016/j.ica.2021.120559] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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