1
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Chen L, Wu L, Tan X, Rockenbauer A, Song Y, Liu Y. Synthesis and Redox Properties of Water-Soluble Asymmetric Trityl Radicals. J Org Chem 2021; 86:8351-8364. [PMID: 34043350 DOI: 10.1021/acs.joc.1c00766] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Tetrathiatriarylmethyl (trityl) radicals have been recently shown to react with biological oxidoreductants including glutathione (GSH), ascorbic acid (Asc), and superoxide anion radical (O2•-). However, how the substituents affect the reactivity of trityl radicals is still unknown. In this work, five asymmetric trityl radicals were synthesized and their reactivities with GSH, Asc, and O2•- investigated. Under aerobic conditions, GSH induces fast decays for the thioether- (TSA) and N-methyleneglycine-substituted (TGA) derivatives and slow decay for the 4-carboxyphenyl-containing one (TPA). Under anaerobic conditions, the direct reduction of these radicals by GSH also occurs with rate constants (kGSH) from 1.8 × 10-4 M-1 s-1 for TPA to 1.0 × 10-2 M-1 s-1 for TGA. Moreover, these radicals can also react with O2•- with rate constants (kSO) from 1.2 × 103 M-1 s-1 for ET-01 to 1.6 × 104 M-1 s-1 for TGA. Surprisingly, these radicals are completely inert to Asc in both aerobic and anaerobic conditions. Additionally, the substituents exert an important effect on redox potentials of these trityl radicals. This work demonstrates that the redox properties of the trityl radicals strongly depend on their substituents, and TPA with high stability toward GSH shows great potential for intracellular applications.
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Affiliation(s)
- Li Chen
- Tianjin Key Laboratory on Technologies Enabling Development of Clinical Therapeutics and Diagnostics, Department of Medicinal Chemistry, School of Pharmacy, Tianjin Medical University, Tianjin 300070, P. R. China
| | - Lanlan Wu
- Tianjin Key Laboratory on Technologies Enabling Development of Clinical Therapeutics and Diagnostics, Department of Medicinal Chemistry, School of Pharmacy, Tianjin Medical University, Tianjin 300070, P. R. China
| | - Xiaoli Tan
- Tianjin Key Laboratory on Technologies Enabling Development of Clinical Therapeutics and Diagnostics, Department of Medicinal Chemistry, School of Pharmacy, Tianjin Medical University, Tianjin 300070, P. R. China
| | - Antal Rockenbauer
- Institute of Materials and Environmental Chemistry, Research Centre for Natural Sciences, Hungarian Academy of Sciences, 1117 Budapest, Hungary.,Department of Physics, Budapest University of Technology and Economics, Budafoki ut 8, 1111 Budapest, Hungary
| | - Yuguang Song
- Tianjin Key Laboratory on Technologies Enabling Development of Clinical Therapeutics and Diagnostics, Department of Medicinal Chemistry, School of Pharmacy, Tianjin Medical University, Tianjin 300070, P. R. China
| | - Yangping Liu
- Tianjin Key Laboratory on Technologies Enabling Development of Clinical Therapeutics and Diagnostics, Department of Medicinal Chemistry, School of Pharmacy, Tianjin Medical University, Tianjin 300070, P. R. China
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2
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Kuzhelev AA, Tormyshev VM, Plyusnin VF, Rogozhnikova OY, Edeleva MV, Veber SL, Bagryanskaya EG. Photochemistry of tris(2,3,5,6-tetrathiaaryl)methyl radicals in various solutions. Phys Chem Chem Phys 2020; 22:1019-1026. [DOI: 10.1039/c9cp06213k] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
A detailed mechanism of TAM photolysis was studied and includes photoionization of the TAM radical with the formation of carbocation and further conversion of the carbocation under aerobic conditions into quinone-methide and under anaerobic conditions supposedly into an aromatic carbene.
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Affiliation(s)
- Andrey A. Kuzhelev
- N. N. Vorozhtsov Novosibirsk Institute of Organic Chemistry SB RAS
- Novosibirsk 630090
- Russia
| | - Victor M. Tormyshev
- N. N. Vorozhtsov Novosibirsk Institute of Organic Chemistry SB RAS
- Novosibirsk 630090
- Russia
- Novosibirsk State University
- Novosibirsk 630090
| | - Victor F. Plyusnin
- Novosibirsk State University
- Novosibirsk 630090
- Russia
- Voevodsky Institute of Chemical Kinetics and Combustion
- SB RAS
| | - Olga Yu. Rogozhnikova
- N. N. Vorozhtsov Novosibirsk Institute of Organic Chemistry SB RAS
- Novosibirsk 630090
- Russia
| | - Mariya V. Edeleva
- N. N. Vorozhtsov Novosibirsk Institute of Organic Chemistry SB RAS
- Novosibirsk 630090
- Russia
- Novosibirsk State University
- Novosibirsk 630090
| | - Sergey L. Veber
- Novosibirsk State University
- Novosibirsk 630090
- Russia
- International Tomography Center SB RAS
- Novosibirsk 630090
| | - Elena G. Bagryanskaya
- N. N. Vorozhtsov Novosibirsk Institute of Organic Chemistry SB RAS
- Novosibirsk 630090
- Russia
- Novosibirsk State University
- Novosibirsk 630090
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3
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Molecular Probes for Evaluation of Oxidative Stress by In Vivo EPR Spectroscopy and Imaging: State-of-the-Art and Limitations. MAGNETOCHEMISTRY 2019. [DOI: 10.3390/magnetochemistry5010013] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Oxidative stress, defined as a misbalance between the production of reactive oxygen species and the antioxidant defenses of the cell, appears as a critical factor either in the onset or in the etiology of many pathological conditions. Several methods of detection exist. However, they usually rely on ex vivo evaluation or reports on the status of living tissues only up to a few millimeters in depth, while a whole-body, real-time, non-invasive monitoring technique is required for early diagnosis or as an aid to therapy (to monitor the action of a drug). Methods based on electron paramagnetic resonance (EPR), in association with molecular probes based on aminoxyl radicals (nitroxides) or hydroxylamines especially, have emerged as very promising to meet these standards. The principles involve monitoring the rate of decrease or increase of the EPR signal in vivo after injection of the nitroxide or the hydroxylamine probe, respectively, in a pathological versus a control situation. There have been many successful applications in various rodent models. However, current limitations lie in both the field of the technical development of the spectrometers and the molecular probes. The scope of this review will mainly focus on the latter.
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4
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Tan X, Tao S, Liu W, Rockenbauer A, Villamena FA, Zweier JL, Song Y, Liu Y. Synthesis and Characterization of the Perthiatriarylmethyl Radical and Its Dendritic Derivatives with High Sensitivity and Selectivity to Superoxide Radical. Chemistry 2018; 24:6958-6967. [DOI: 10.1002/chem.201800134] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2018] [Revised: 03/03/2018] [Indexed: 01/13/2023]
Affiliation(s)
- Xiaoli Tan
- Tianjin Key Laboratory on Technologies Enabling Development of; Clinical Therapeutics and Diagnostics; School of Pharmacy; Tianjin Medical University; Tianjin 300070 P.R. China
| | - Shanqing Tao
- Tianjin Key Laboratory on Technologies Enabling Development of; Clinical Therapeutics and Diagnostics; School of Pharmacy; Tianjin Medical University; Tianjin 300070 P.R. China
| | - Wenbo Liu
- Tianjin Key Laboratory on Technologies Enabling Development of; Clinical Therapeutics and Diagnostics; School of Pharmacy; Tianjin Medical University; Tianjin 300070 P.R. China
| | - Antal Rockenbauer
- Institute of Materials and Environmental Chemistry; Hungarian Academy of Sciences and; Department of Physics; Budapest University of Technology and Economics; Budafoki ut 8 1111 Budapest Hungary
| | - Frederick A. Villamena
- Department of Biological Chemistry and Pharmacology; College of Medicine; The Ohio State University; Columbus OH 43210 USA
| | - Jay L. Zweier
- Center for Biomedical EPR Spectroscopy and Imaging; The Davis Heart and Lung Research Institute; Division of Cardiovascular Medicine; Department of Internal Medicine; The Ohio State University; Columbus OH 43210 USA
| | - Yuguang Song
- Tianjin Key Laboratory on Technologies Enabling Development of; Clinical Therapeutics and Diagnostics; School of Pharmacy; Tianjin Medical University; Tianjin 300070 P.R. China
| | - Yangping Liu
- Tianjin Key Laboratory on Technologies Enabling Development of; Clinical Therapeutics and Diagnostics; School of Pharmacy; Tianjin Medical University; Tianjin 300070 P.R. China
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5
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Abstract
Superoxide radical represents one of the most biologically relevant reactive oxygen species involved in numerous physiological and pathophysiological processes. Superoxide measurement through the decay of an electron paramagnetic resonance (EPR) signal of a triarylmethyl (TAM) radical possesses the advantage of a high selectivity and relatively high rate constant of TAM reaction with the superoxide. Hereby we report a straightforward synthesis and characterization of a TAM-TAM biradical showing a high reactivity with superoxide (second-order rate constant, (6.7 ± 0.2) × 103 M-1 s-1) enabling the measurement of superoxide radical by following the increase of a sharp EPR signal associated with the formation of a TAM-quinone-methide monoradical product.
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Affiliation(s)
- Martin Poncelet
- In Vivo Multifunctional Magnetic Resonance center, Robert C. Byrd Health Sciences Center, West Virginia University, 1 Medical Center Drive, Morgantown, WV 26506, United States
- Department of Biochemistry, West Virginia University School of Medicine, 1 Medical Center Drive, Morgantown, WV 26506, United States
| | - Benoit Driesschaert
- In Vivo Multifunctional Magnetic Resonance center, Robert C. Byrd Health Sciences Center, West Virginia University, 1 Medical Center Drive, Morgantown, WV 26506, United States
- Department of Biochemistry, West Virginia University School of Medicine, 1 Medical Center Drive, Morgantown, WV 26506, United States
| | - Andrey A. Bobko
- In Vivo Multifunctional Magnetic Resonance center, Robert C. Byrd Health Sciences Center, West Virginia University, 1 Medical Center Drive, Morgantown, WV 26506, United States
- Department of Biochemistry, West Virginia University School of Medicine, 1 Medical Center Drive, Morgantown, WV 26506, United States
| | - Valery V. Khramtsov
- In Vivo Multifunctional Magnetic Resonance center, Robert C. Byrd Health Sciences Center, West Virginia University, 1 Medical Center Drive, Morgantown, WV 26506, United States
- Department of Biochemistry, West Virginia University School of Medicine, 1 Medical Center Drive, Morgantown, WV 26506, United States
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6
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Boś-Liedke A, Walawender M, Woźniak A, Flak D, Gapiński J, Jurga S, Kucińska M, Plewiński A, Murias M, Elewa M, Lampp L, Imming P, Tadyszak K. EPR Oximetry Sensor-Developing a TAM Derivative for In Vivo Studies. Cell Biochem Biophys 2017; 76:19-28. [PMID: 28871484 PMCID: PMC5913390 DOI: 10.1007/s12013-017-0824-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2017] [Accepted: 08/14/2017] [Indexed: 12/11/2022]
Abstract
Oxygenation is one of the most important physiological parameters of biological systems. Low oxygen concentration (hypoxia) is associated with various pathophysiological processes in different organs. Hypoxia is of special importance in tumor therapy, causing poor response to treatment. Triaryl methyl (TAM) derivative radicals are commonly used in electron paramagnetic resonance (EPR) as sensors for quantitative spatial tissue oxygen mapping. They are also known as magnetic resonance imaging (MRI) contrast agents and fluorescence imaging compounds. We report the properties of the TAM radical tris(2,3,5,6-tetrachloro-4-carboxy-phenyl)methyl, (PTMTC), a potential multimodal (EPR/fluorescence) marker. PTMTC was spectrally analyzed using EPR and characterized by estimation of its sensitivity to the oxygen in liquid environment suitable for intravenous injection (1 mM PBS, pH = 7.4). Further, fluorescent emission of the radical was measured using the same solvent and its quantum yield was estimated. An in vitro cytotoxicity examination was conducted in two cancer cell lines, HT-29 (colorectal adenocarcinoma) and FaDu (squamous cell carcinoma) and followed by uptake studies. The stability of the radical in different solutions (PBS pH = 7.4, cell media used for HT-29 and FaDu cells culturing and cytotoxicity procedure, full rat blood and blood plasma) was determined. Finally, a primary toxicity test of PTMTC was carried out in mice. Results of spectral studies confirmed the multimodal properties of PTMTC. PTMTC was demonstrated to be not absorbed by cancer cells and did not interfere with luciferin-luciferase based assays. Also in vitro and in vivo tests showed that it was non-toxic and can be freely administrated till doses of 250 mg/kg BW via both i.v. and i.p. injections. This work illustrated that PTMTC is a perfect candidate for multimodal (EPR/fluorescence) contrast agent in preclinical studies.
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Affiliation(s)
- Agnieszka Boś-Liedke
- NanoBioMedical Centre, Adam Mickiewicz University, ul. Umultowska 85, 61614, Poznań, Poland. .,Faculty of Physics, Adam Mickiewicz University, ul. Umultowska 14, 61614, Poznań, Poland.
| | - Magdalena Walawender
- NanoBioMedical Centre, Adam Mickiewicz University, ul. Umultowska 85, 61614, Poznań, Poland
| | - Anna Woźniak
- NanoBioMedical Centre, Adam Mickiewicz University, ul. Umultowska 85, 61614, Poznań, Poland
| | - Dorota Flak
- NanoBioMedical Centre, Adam Mickiewicz University, ul. Umultowska 85, 61614, Poznań, Poland
| | - Jacek Gapiński
- NanoBioMedical Centre, Adam Mickiewicz University, ul. Umultowska 85, 61614, Poznań, Poland.,Faculty of Physics, Adam Mickiewicz University, ul. Umultowska 14, 61614, Poznań, Poland
| | - Stefan Jurga
- NanoBioMedical Centre, Adam Mickiewicz University, ul. Umultowska 85, 61614, Poznań, Poland.,Faculty of Physics, Adam Mickiewicz University, ul. Umultowska 14, 61614, Poznań, Poland
| | - Małgorzata Kucińska
- Department of Toxicology, Poznan University of Medical Sciences, ul. Dojazd 30, 60631, Poznan, Poland
| | - Adam Plewiński
- Department of Toxicology, Poznan University of Medical Sciences, ul. Dojazd 30, 60631, Poznan, Poland
| | - Marek Murias
- Department of Toxicology, Poznan University of Medical Sciences, ul. Dojazd 30, 60631, Poznan, Poland
| | - Marwa Elewa
- Faculty of Pharmacy, Suez Canal University, P.O. 41522, Ismailia, Egypt
| | - Lisa Lampp
- Institute of Pharmacy, Martin Luther University Halle-Wittenberg, Wolfgang-Langenbeck-Str. 4, 06120, Halle (Saale), Germany
| | - Peter Imming
- Institute of Pharmacy, Martin Luther University Halle-Wittenberg, Wolfgang-Langenbeck-Str. 4, 06120, Halle (Saale), Germany
| | - Krzysztof Tadyszak
- NanoBioMedical Centre, Adam Mickiewicz University, ul. Umultowska 85, 61614, Poznań, Poland. .,Institute of Molecular Physics, Polish Academy of Sciences, ul. M. Smoluchowskiego 17, 60179, Poznań, Poland.
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7
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Tan X, Chen L, Song Y, Rockenbauer A, Villamena FA, Zweier JL, Liu Y. Thiol-Dependent Reduction of the Triester and Triamide Derivatives of Finland Trityl Radical Triggers O2-Dependent Superoxide Production. Chem Res Toxicol 2017; 30:1664-1672. [DOI: 10.1021/acs.chemrestox.7b00086] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Xiaoli Tan
- Tianjin
Key Laboratory on Technologies Enabling Development of Clinical Therapeutics
and Diagnostics, School of Pharmacy, Tianjin Medical University, Tianjin 300070, P. R. China
| | - Li Chen
- Tianjin
Key Laboratory on Technologies Enabling Development of Clinical Therapeutics
and Diagnostics, School of Pharmacy, Tianjin Medical University, Tianjin 300070, P. R. China
| | - Yuguang Song
- Tianjin
Key Laboratory on Technologies Enabling Development of Clinical Therapeutics
and Diagnostics, School of Pharmacy, Tianjin Medical University, Tianjin 300070, P. R. China
| | - Antal Rockenbauer
- Institute
of Materials and Environmental Chemistry, Hungarian Academy of Sciences,
Department of Physics, Budapest University of Technology and Economics, Budafoki ut 8, 1111 Budapest, Hungary
| | - Frederick A. Villamena
- Department
of Biological Chemistry and Pharmacology, College of Medicine, The Ohio State University, Columbus, Ohio 43210, United States
| | - Jay L. Zweier
- Center
for Biomedical EPR Spectroscopy and Imaging, The Davis Heart and Lung
Research Institute, The Division of Cardiovascular Medicine, Department
of Internal Medicine, The Ohio State University, Columbus, Ohio 43210, United States
| | - Yangping Liu
- Tianjin
Key Laboratory on Technologies Enabling Development of Clinical Therapeutics
and Diagnostics, School of Pharmacy, Tianjin Medical University, Tianjin 300070, P. R. China
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8
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Audran G, Bagryanskaya EG, Brémond P, Edeleva MV, Marque SRA, Parkhomenko DA, Rogozhnikova OY, Tormyshev VM, Tretyakov EV, Trukhin DV, Zhivetyeva SI. Trityl-based alkoxyamines as NMP controllers and spin-labels. Polym Chem 2016; 7:6490-6499. [PMID: 28989533 PMCID: PMC5627662 DOI: 10.1039/c6py01303a] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Recently, new applications of trityl-nitroxide biradicals were proposed. In the present study, attachment of a trityl radical to alkoxyamines was performed for the first time. The rate constants kd of C-ON bond homolysis in these alkoxyamines were measured and found to be equal to those for alkoxyamines without trityl. The electron paramagnetic resonance (EPR) spectra of the products of alkoxyamine homolysis (trityl-TEMPO and trityl-SG1 biradicals) were recorded, and the corresponding exchange interactions were estimated. The decomposition of trityl-alkoxyamine showed more than an 80% yield of biradicals, meaning that the C-ON bond homolysis is the main reaction. The suitability of these labelled initiators/controllers for polymerisation was exemplified by means of successful nitroxide-mediated polymerisation (NMP) of styrene. Thus, this is the first report of a spin-labelled alkoxyamine suitable for NMP.
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Affiliation(s)
- Gérard Audran
- Aix-Marseille Univ, CNRS, ICR, UMR 7273, case 551, Avenue Escadrille Normandie-Niemen, 13397 Marseille Cedex 20 France
| | - Elena G. Bagryanskaya
- N. N. Vorozhtsov Novosibirsk Institute of Organic Chemistry SB RAS. 9, Lavrentjev Ave, Novosibirsk 630090, Russia
- Novosibirsk State University, Novosibirsk 630090, Russia
| | - Paul Brémond
- Aix-Marseille Univ, CNRS, ICR, UMR 7273, case 551, Avenue Escadrille Normandie-Niemen, 13397 Marseille Cedex 20 France
| | - Mariya V. Edeleva
- N. N. Vorozhtsov Novosibirsk Institute of Organic Chemistry SB RAS. 9, Lavrentjev Ave, Novosibirsk 630090, Russia
| | - Sylvain R. A. Marque
- Aix-Marseille Univ, CNRS, ICR, UMR 7273, case 551, Avenue Escadrille Normandie-Niemen, 13397 Marseille Cedex 20 France
- N. N. Vorozhtsov Novosibirsk Institute of Organic Chemistry SB RAS. 9, Lavrentjev Ave, Novosibirsk 630090, Russia
| | - Dmitriy A. Parkhomenko
- N. N. Vorozhtsov Novosibirsk Institute of Organic Chemistry SB RAS. 9, Lavrentjev Ave, Novosibirsk 630090, Russia
| | - Olga Yu. Rogozhnikova
- N. N. Vorozhtsov Novosibirsk Institute of Organic Chemistry SB RAS. 9, Lavrentjev Ave, Novosibirsk 630090, Russia
- Novosibirsk State University, Novosibirsk 630090, Russia
| | - Victor M. Tormyshev
- N. N. Vorozhtsov Novosibirsk Institute of Organic Chemistry SB RAS. 9, Lavrentjev Ave, Novosibirsk 630090, Russia
- Novosibirsk State University, Novosibirsk 630090, Russia
| | - Evgeny V. Tretyakov
- N. N. Vorozhtsov Novosibirsk Institute of Organic Chemistry SB RAS. 9, Lavrentjev Ave, Novosibirsk 630090, Russia
| | - Dmitry V. Trukhin
- N. N. Vorozhtsov Novosibirsk Institute of Organic Chemistry SB RAS. 9, Lavrentjev Ave, Novosibirsk 630090, Russia
- Novosibirsk State University, Novosibirsk 630090, Russia
| | - Svetlana I. Zhivetyeva
- N. N. Vorozhtsov Novosibirsk Institute of Organic Chemistry SB RAS. 9, Lavrentjev Ave, Novosibirsk 630090, Russia
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9
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Use of spin traps to detect superoxide production in living cells by electron paramagnetic resonance (EPR) spectroscopy. Methods 2016; 109:31-43. [DOI: 10.1016/j.ymeth.2016.05.001] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2016] [Revised: 05/04/2016] [Accepted: 05/05/2016] [Indexed: 01/23/2023] Open
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10
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Driesschaert B, Bobko AA, Khramtsov VV, Zweier JL. Nitro-Triarylmethyl Radical as Dual Oxygen and Superoxide Probe. Cell Biochem Biophys 2016; 75:241-246. [PMID: 27206803 DOI: 10.1007/s12013-016-0732-y] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2016] [Accepted: 05/03/2016] [Indexed: 01/16/2023]
Abstract
Superoxide radical is involved in numerous physiological and pathophysiological processes. Tetrathiatriarylmethyl (TAM) radicals are known to react with superoxide allowing measurement of superoxide production in biological media. We report the synthesis of a Nitro conjugated TAM radical showing a rate constant of 7 × 105 M-1 s-1 which is two order of magnitude higher than other TAMs, allowing high sensitivity measurement of superoxide.
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Affiliation(s)
- Benoit Driesschaert
- In Vivo Multifunctional Magnetic Resonance center, Robert C. Byrd Health Sciences Center, West Virginia University, Morgantown, WV, 26506, USA. .,Department of Biochemistry, West Virginia University School of Medicine, 1 Medical Center Drive, P.O. Box 9142, Morgantown, WV, 26506, USA.
| | - Andrey A Bobko
- In Vivo Multifunctional Magnetic Resonance center, Robert C. Byrd Health Sciences Center, West Virginia University, Morgantown, WV, 26506, USA.,Department of Biochemistry, West Virginia University School of Medicine, 1 Medical Center Drive, P.O. Box 9142, Morgantown, WV, 26506, USA
| | - Valery V Khramtsov
- In Vivo Multifunctional Magnetic Resonance center, Robert C. Byrd Health Sciences Center, West Virginia University, Morgantown, WV, 26506, USA. .,Department of Biochemistry, West Virginia University School of Medicine, 1 Medical Center Drive, P.O. Box 9142, Morgantown, WV, 26506, USA.
| | - Jay L Zweier
- Davis Heart and Lung Research Institute, The Ohio State University/Wexner Medical Center, 460 West 12th Avenue, BRT 0390, Columbus, OH, 43210, USA.
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11
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Driesschaert B, Bobko AA, Eubank TD, Samouilov A, Khramtsov VV, Zweier JL. Poly-arginine conjugated triarylmethyl radical as intracellular spin label. Bioorg Med Chem Lett 2016; 26:1742-4. [PMID: 26923698 DOI: 10.1016/j.bmcl.2016.02.048] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2016] [Revised: 02/16/2016] [Accepted: 02/17/2016] [Indexed: 10/22/2022]
Abstract
Stable triarylmethyl radicals are ideal spin labels used for biomedical electron paramagnetic resonance applications. Previously reported structures exhibit polar charged functions for water solubilization preventing them from crossing the cell membrane. We report the synthesis of a triarylmethyl radical conjugated to poly-arginine peptide allowing intracellular delivery of the paramagnetic label.
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Affiliation(s)
- Benoit Driesschaert
- In Vivo Multifunctional Magnetic Resonance Center, Robert C. Byrd Health Science Center, West Virginia University, Morgantown, WV 26506, United States; Department of Biochemistry, West Virginia University School of Medicine, Morgantown, WV 26506, United States
| | - Andrey A Bobko
- In Vivo Multifunctional Magnetic Resonance Center, Robert C. Byrd Health Science Center, West Virginia University, Morgantown, WV 26506, United States; Department of Biochemistry, West Virginia University School of Medicine, Morgantown, WV 26506, United States
| | - Timothy D Eubank
- In Vivo Multifunctional Magnetic Resonance Center, Robert C. Byrd Health Science Center, West Virginia University, Morgantown, WV 26506, United States; Department of Microbiology, Immunology & Cell Biology, West Virginia University School of Medicine, Morgantown, WV 26506, United States
| | - Alexandre Samouilov
- Davis Heart & Lung Research Institute, The Ohio State University/Wexner Medical Center, 460 West 12th Avenue, BRT 0390, Columbus, OH 43210, United States
| | - Valery V Khramtsov
- In Vivo Multifunctional Magnetic Resonance Center, Robert C. Byrd Health Science Center, West Virginia University, Morgantown, WV 26506, United States; Department of Biochemistry, West Virginia University School of Medicine, Morgantown, WV 26506, United States
| | - Jay L Zweier
- Davis Heart & Lung Research Institute, The Ohio State University/Wexner Medical Center, 460 West 12th Avenue, BRT 0390, Columbus, OH 43210, United States.
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12
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De Pascali F, Hemann C, Samons K, Chen CA, Zweier JL. Hypoxia and reoxygenation induce endothelial nitric oxide synthase uncoupling in endothelial cells through tetrahydrobiopterin depletion and S-glutathionylation. Biochemistry 2014; 53:3679-88. [PMID: 24758136 PMCID: PMC4053070 DOI: 10.1021/bi500076r] [Citation(s) in RCA: 84] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2014] [Revised: 04/18/2014] [Indexed: 01/09/2023]
Abstract
Ischemia-reperfusion injury is accompanied by endothelial hypoxia and reoxygenation that trigger oxidative stress with enhanced superoxide generation and diminished nitric oxide (NO) production leading to endothelial dysfunction. Oxidative depletion of the endothelial NO synthase (eNOS) cofactor tetrahydrobiopterin can trigger eNOS uncoupling, in which the enzyme generates superoxide rather than NO. Recently, it has also been shown that oxidative stress can induce eNOS S-glutathionylation at critical cysteine residues of the reductase site that serves as a redox switch to control eNOS coupling. While superoxide can deplete tetrahydrobiopterin and induce eNOS S-glutathionylation, the extent of and interaction between these processes in the pathogenesis of eNOS dysfunction in endothelial cells following hypoxia and reoxygenation remain unknown. Therefore, studies were performed on endothelial cells subjected to hypoxia and reoxygenation to determine the severity of eNOS uncoupling and the role of cofactor depletion and S-glutathionylation in this process. Hypoxia and reoxygenation of aortic endothelial cells triggered xanthine oxidase-mediated superoxide generation, causing both tetrahydrobiopterin depletion and S-glutathionylation with resultant eNOS uncoupling. Replenishing cells with tetrahydrobiopterin along with increasing intracellular levels of glutathione greatly preserved eNOS activity after hypoxia and reoxygenation, while targeting either mechanism alone only partially ameliorated the decrease in NO. Endothelial oxidative stress, secondary to hypoxia and reoxygenation, uncoupled eNOS with an altered ratio of oxidized to reduced glutathione inducing eNOS S-glutathionylation. These mechanisms triggered by oxidative stress combine to cause eNOS dysfunction with shift of the enzyme from NO to superoxide production. Thus, in endothelial reoxygenation injury, normalization of both tetrahydrobiopterin levels and the glutathione pool are needed for maximal restoration of eNOS function and NO generation.
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Affiliation(s)
- Francesco De Pascali
- Davis
Heart and Lung Research Institute and Division of Cardiovascular Medicine,
Department of Internal Medicine, College of Medicine, The Ohio State University, Columbus, Ohio 43210, United States
| | - Craig Hemann
- Davis
Heart and Lung Research Institute and Division of Cardiovascular Medicine,
Department of Internal Medicine, College of Medicine, The Ohio State University, Columbus, Ohio 43210, United States
| | - Kindra Samons
- Davis
Heart and Lung Research Institute and Division of Cardiovascular Medicine,
Department of Internal Medicine, College of Medicine, The Ohio State University, Columbus, Ohio 43210, United States
| | - Chun-An Chen
- Davis
Heart and Lung Research Institute and Division of Cardiovascular Medicine,
Department of Internal Medicine, College of Medicine, The Ohio State University, Columbus, Ohio 43210, United States
- The
Department of Emergency Medicine, College of Medicine, The Ohio State University, Columbus, Ohio 43210, United States
| | - Jay L. Zweier
- Davis
Heart and Lung Research Institute and Division of Cardiovascular Medicine,
Department of Internal Medicine, College of Medicine, The Ohio State University, Columbus, Ohio 43210, United States
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13
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Decroos C, Boucher JL, Mansuy D, Xu-Li Y. Reactions of Amino Acids, Peptides, and Proteins with Oxidized Metabolites of Tris(p-carboxyltetrathiaaryl)methyl Radical EPR Probes. Chem Res Toxicol 2014; 27:627-36. [DOI: 10.1021/tx400467p] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Christophe Decroos
- Laboratoire
de Chimie et Biochimie Pharmacologiques et Toxicologiques, UMR 8601 CNRS, Université Paris Descartes, Sorbonne Paris Cité, 45 rue
des Saints-Pères, 75270 Paris, France
| | - Jean-Luc Boucher
- Laboratoire
de Chimie et Biochimie Pharmacologiques et Toxicologiques, UMR 8601 CNRS, Université Paris Descartes, Sorbonne Paris Cité, 45 rue
des Saints-Pères, 75270 Paris, France
| | - Daniel Mansuy
- Laboratoire
de Chimie et Biochimie Pharmacologiques et Toxicologiques, UMR 8601 CNRS, Université Paris Descartes, Sorbonne Paris Cité, 45 rue
des Saints-Pères, 75270 Paris, France
| | - Yun Xu-Li
- Laboratoire
de Chimie et Biochimie Pharmacologiques et Toxicologiques, UMR 8601 CNRS, Université Paris Descartes, Sorbonne Paris Cité, 45 rue
des Saints-Pères, 75270 Paris, France
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14
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Decroos C, Balland V, Boucher JL, Bertho G, Xu-Li Y, Mansuy D. Toward stable electron paramagnetic resonance oximetry probes: synthesis, characterization, and metabolic evaluation of new ester derivatives of a tris-(para-carboxyltetrathiaaryl)methyl (TAM) radical. Chem Res Toxicol 2013; 26:1561-9. [PMID: 24010758 DOI: 10.1021/tx400250a] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Tris(p-carboxyltetrathiaaryl)methyl (TAM) radicals, such as 1a ("Finland" radical), are useful EPR probes for oximetry. However, they are rapidly metabolized by liver microsomes in the presence of NADPH, with the formation of diamagnetic quinone-methide metabolites resulting from an oxidative decarboxylation of one of their carboxylate substituents. In an effort to obtain TAM derivatives potentially more metabolically stable in vivo, we have synthesized four new TAM radicals in which the carboxylate substituents of 1a have been replaced with esters groups bearing various alkyl chains designed to render them water-soluble. The new compounds were completely characterized by UV-vis and EPR spectroscopies, high resolution mass spectrometry (HRMS), and electrochemistry. Two of them were water-soluble enough to undergo detailed microsomal metabolic studies in comparison with 1a. They were found to be stable in the presence of the esterases present in rat liver microsomes and cytosol, and, contrary to 1a, stable to oxidation in the presence of NADPH-supplemented microsomes. A careful study of their possible microsomal reduction under anaerobic or aerobic conditions showed that they were more easily reduced than 1a, in agreement with their higher reduction potentials. They were reduced into the corresponding anions not only under anaerobic conditions but also in the presence of dioxygen. These anions were much more stable than that of 1a and could be characterized by UV-vis spectroscopy, MS, and at the level of their protonated product. However, they were oxidized by O₂, giving back to the starting ester radicals and catalyzing a futile cycle of O₂ reduction. Such reactions should be considered in the design of future stable EPR probes for oximetry in vivo.
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Affiliation(s)
- Christophe Decroos
- Laboratoire de Chimie et Biochimie Pharmacologiques et Toxicologiques, UMR 8601 CNRS, Université Paris Descartes, Sorbonne Paris Cité, 45 rue des Saints-Pères, 75270 Paris, France
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15
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Rogozhnikova OY, Vasiliev VG, Troitskaya TI, Trukhin DV, Mikhalina TV, Halpern HJ, Tormyshev VM. Generation of Trityl Radicals by Nucleophilic Quenching of Tris(2,3,5,6-tetrathiaaryl)methyl Cations and Practical and Convenient Large-Scale Synthesis of Persistent Tris(4-carboxy-2,3,5,6-tetrathiaaryl)methyl Radical. European J Org Chem 2013; 2013:3347-3355. [PMID: 24772001 PMCID: PMC3998730 DOI: 10.1002/ejoc.201300176] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2013] [Indexed: 01/10/2023]
Abstract
Tris(2,3,5,6-tetrathiaaryl)methyl cations, which were generated from the corresponding triarylmethanols in the presence of strong acids, underwent reaction with nucleophiles to give trityl radicals, as the product of a one-electron reduction of the carbocation. Depending on the nature of the nucleophile, the only byproducts were either diamagnetic quinone methides or asymmetrical monosubstituted trityl radicals. Herein, we report a protocol for the large-scale synthesis of the Finland trityl, which has the advantage of high overall yield and reproducibility.
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Affiliation(s)
- Olga Yu. Rogozhnikova
- Vorozhtsov Novosibirsk Institute of Organic Chemistry, 9 Acad. M.A. Lavrentjev Ave., Novosibirsk 630090, Russia
| | - Vladimir G. Vasiliev
- Vorozhtsov Novosibirsk Institute of Organic Chemistry, 9 Acad. M.A. Lavrentjev Ave., Novosibirsk 630090, Russia
| | - Tatiana I. Troitskaya
- Vorozhtsov Novosibirsk Institute of Organic Chemistry, 9 Acad. M.A. Lavrentjev Ave., Novosibirsk 630090, Russia
| | - Dmitry V. Trukhin
- Vorozhtsov Novosibirsk Institute of Organic Chemistry, 9 Acad. M.A. Lavrentjev Ave., Novosibirsk 630090, Russia
| | - Tatiana V. Mikhalina
- Vorozhtsov Novosibirsk Institute of Organic Chemistry, 9 Acad. M.A. Lavrentjev Ave., Novosibirsk 630090, Russia
| | - Howard J. Halpern
- The Center for EPR Imaging in vivo Physiology, Department of Radiation and Cellular Oncology, the University of Chicago, Chicago, IL 60637, USA
| | - Victor M. Tormyshev
- Vorozhtsov Novosibirsk Institute of Organic Chemistry, 9 Acad. M.A. Lavrentjev Ave., Novosibirsk 630090, Russia
- Department of Natural Sciences, Novosibirsk State University, 2 Pirogov St., Novosibirsk 630090, Russia
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16
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Song Y, Liu Y, Hemann C, Villamena FA, Zweier JL. Esterified Dendritic TAM Radicals with Very High Stability and Enhanced Oxygen Sensitivity. J Org Chem 2013; 78:1371-6. [DOI: 10.1021/jo301849k] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Yuguang Song
- The
Davis Heart and Lung Research Institute, the Division of Cardiovascular
Medicine, Department of Internal Medicine, and‡Department of Pharmacology, College of Medicine, The Ohio State University, Columbus, Ohio 43210, United States
| | - Yangping Liu
- The
Davis Heart and Lung Research Institute, the Division of Cardiovascular
Medicine, Department of Internal Medicine, and‡Department of Pharmacology, College of Medicine, The Ohio State University, Columbus, Ohio 43210, United States
| | - Craig Hemann
- The
Davis Heart and Lung Research Institute, the Division of Cardiovascular
Medicine, Department of Internal Medicine, and‡Department of Pharmacology, College of Medicine, The Ohio State University, Columbus, Ohio 43210, United States
| | - Frederick A. Villamena
- The
Davis Heart and Lung Research Institute, the Division of Cardiovascular
Medicine, Department of Internal Medicine, and‡Department of Pharmacology, College of Medicine, The Ohio State University, Columbus, Ohio 43210, United States
| | - Jay L. Zweier
- The
Davis Heart and Lung Research Institute, the Division of Cardiovascular
Medicine, Department of Internal Medicine, and‡Department of Pharmacology, College of Medicine, The Ohio State University, Columbus, Ohio 43210, United States
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17
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Mesa JA, Chávez S, Fajarí L, Torres JL, Juliá L. A tri(potassium sulfonate) derivative of perchlorotriphenylmethyl radical (PTM) as a stable water soluble radical-scavenger of the hydroxyl radical more powerful than 5,5-dimethyl-1-pyrroline-N-oxide. RSC Adv 2013. [DOI: 10.1039/c3ra41499j] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
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18
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Liu Y, Song Y, De Pascali F, Liu X, Villamena FA, Zweier JL. Tetrathiatriarylmethyl radical with a single aromatic hydrogen as a highly sensitive and specific superoxide probe. Free Radic Biol Med 2012; 53:2081-2091. [PMID: 23000244 PMCID: PMC4118678 DOI: 10.1016/j.freeradbiomed.2012.09.011] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/27/2012] [Revised: 09/04/2012] [Accepted: 09/13/2012] [Indexed: 01/09/2023]
Abstract
Superoxide (O(2)(•-)) plays crucial roles in normal physiology and disease; however, its measurement remains challenging because of the limited sensitivity and/or specificity of prior detection methods. We demonstrate that a tetrathiatriarylmethyl (TAM) radical with a single aromatic hydrogen (CT02-H) can serve as a highly sensitive and specific O(2)(•-) probe. CT02-H is an analogue of the fully substituted TAM radical CT-03 (Finland trityl) with an electron paramagnetic resonance (EPR) doublet signal due to its aromatic hydrogen. Owing to the neutral nature and negligible steric hindrance of the hydrogen, O(2)(•-) preferentially reacts with CT02-H at this site with production of the diamagnetic quinone methide via oxidative dehydrogenation. Upon reaction with O(2)(•-), CT02-H loses its EPR signal and this EPR signal decay can be used to quantitatively measure O(2)(•-). This is accompanied by a change in color from green to purple, with the quinone methide product exhibiting a unique UV-Vis absorbance (ε=15,900 M(-1) cm(-1)) at 540 nm, providing an additional O(2)(•-) detection method. More than five-fold higher reactivity of CT02-H for O(2)(•-) relative to CT-03 was demonstrated, with a second-order rate constant of 1.7×10(4) M(-1) s(-1) compared to 3.1×10(3) M(-1) s(-1) for CT-03. CT02-H exhibited high specificity for O(2)(•-) as evidenced by its inertness to other oxidoreductants. The O(2)(•-) generation rates detected by CT02-H from xanthine/xanthine oxidase were consistent with those measured by cytochrome c reduction but detection sensitivity was 10- to 100-fold higher. EPR detection of CT02-H enabled measurement of very low O(2)(•-) flux with a detection limit of 0.34 nM/min over 120 min. HPLC in tandem with electrochemical detection was used to quantitatively detect the stable quinone methide product and is a highly sensitive and specific method for measurement of O(2)(•-), with a sensitivity limit of ~2×10(-13) mol (10 nM with 20-μl injection volume). Based on the O(2)-dependent linewidth broadening of its EPR spectrum, CT02-H also enables simultaneous measurement of O(2) concentration and O(2)(•-) generation and was shown to provide sensitive detection of extracellular O(2)(•-) generation in endothelial cells stimulated either by menadione or with anoxia/reoxygenation. Thus, CT02-H is a unique probe that provides very high sensitivity and specificity for measurement of O(2)(•-) by either EPR or HPLC methods.
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Affiliation(s)
- Yangping Liu
- Davis Heart and Lung Research Institute, Division of Cardiovascular Medicine, Department of Internal Medicine, College of Medicine, The Ohio State University, Columbus, OH 43210, USA
| | - Yuguang Song
- Davis Heart and Lung Research Institute, Division of Cardiovascular Medicine, Department of Internal Medicine, College of Medicine, The Ohio State University, Columbus, OH 43210, USA
| | - Francesco De Pascali
- Davis Heart and Lung Research Institute, Division of Cardiovascular Medicine, Department of Internal Medicine, College of Medicine, The Ohio State University, Columbus, OH 43210, USA
| | - Xiaoping Liu
- Davis Heart and Lung Research Institute, Division of Cardiovascular Medicine, Department of Internal Medicine, College of Medicine, The Ohio State University, Columbus, OH 43210, USA
| | - Frederick A. Villamena
- Davis Heart and Lung Research Institute, Division of Cardiovascular Medicine, Department of Internal Medicine, College of Medicine, The Ohio State University, Columbus, OH 43210, USA
- Department of Pharmacology, College of Medicine, The Ohio State University, Columbus, OH 43210, USA
| | - Jay L. Zweier
- Davis Heart and Lung Research Institute, Division of Cardiovascular Medicine, Department of Internal Medicine, College of Medicine, The Ohio State University, Columbus, OH 43210, USA
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19
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Bézière N, Decroos C, Mkhitaryan K, Kish E, Richard F, Bigot-Marchand S, Durand S, Cloppet F, Chauvet C, Corvol MT, Rannou F, Xu-Li Y, Mansuy D, Peyrot F, Frapart YM. First Combined in Vivo X-Ray Tomography and High-Resolution Molecular Electron Paramagnetic Resonance (EPR) Imaging of the Mouse Knee Joint Taking into Account the Disappearance Kinetics of the EPR Probe. Mol Imaging 2012. [DOI: 10.2310/7290.2011.00042] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Affiliation(s)
- Nicolas Bézière
- From CNRS UMR 8601, Université Paris Descartes, LCPBT; CNRS UMR 8145, Université Paris Descartes, MAP5, Université Paris Descartes, LIPADE, EA2517, Université Paris Descartes, INSERM UMR-S747, Department of Physical Medicine and Rehabilitation, Cochin Hospital (AP-HP), Université Paris Descartes; and Université Paris Sorbonne-IUFM de Paris, Paris, France
| | - Christophe Decroos
- From CNRS UMR 8601, Université Paris Descartes, LCPBT; CNRS UMR 8145, Université Paris Descartes, MAP5, Université Paris Descartes, LIPADE, EA2517, Université Paris Descartes, INSERM UMR-S747, Department of Physical Medicine and Rehabilitation, Cochin Hospital (AP-HP), Université Paris Descartes; and Université Paris Sorbonne-IUFM de Paris, Paris, France
| | - Karen Mkhitaryan
- From CNRS UMR 8601, Université Paris Descartes, LCPBT; CNRS UMR 8145, Université Paris Descartes, MAP5, Université Paris Descartes, LIPADE, EA2517, Université Paris Descartes, INSERM UMR-S747, Department of Physical Medicine and Rehabilitation, Cochin Hospital (AP-HP), Université Paris Descartes; and Université Paris Sorbonne-IUFM de Paris, Paris, France
| | - Elizabeth Kish
- From CNRS UMR 8601, Université Paris Descartes, LCPBT; CNRS UMR 8145, Université Paris Descartes, MAP5, Université Paris Descartes, LIPADE, EA2517, Université Paris Descartes, INSERM UMR-S747, Department of Physical Medicine and Rehabilitation, Cochin Hospital (AP-HP), Université Paris Descartes; and Université Paris Sorbonne-IUFM de Paris, Paris, France
| | - Frédéric Richard
- From CNRS UMR 8601, Université Paris Descartes, LCPBT; CNRS UMR 8145, Université Paris Descartes, MAP5, Université Paris Descartes, LIPADE, EA2517, Université Paris Descartes, INSERM UMR-S747, Department of Physical Medicine and Rehabilitation, Cochin Hospital (AP-HP), Université Paris Descartes; and Université Paris Sorbonne-IUFM de Paris, Paris, France
| | - Stéphanie Bigot-Marchand
- From CNRS UMR 8601, Université Paris Descartes, LCPBT; CNRS UMR 8145, Université Paris Descartes, MAP5, Université Paris Descartes, LIPADE, EA2517, Université Paris Descartes, INSERM UMR-S747, Department of Physical Medicine and Rehabilitation, Cochin Hospital (AP-HP), Université Paris Descartes; and Université Paris Sorbonne-IUFM de Paris, Paris, France
| | - Sylvain Durand
- From CNRS UMR 8601, Université Paris Descartes, LCPBT; CNRS UMR 8145, Université Paris Descartes, MAP5, Université Paris Descartes, LIPADE, EA2517, Université Paris Descartes, INSERM UMR-S747, Department of Physical Medicine and Rehabilitation, Cochin Hospital (AP-HP), Université Paris Descartes; and Université Paris Sorbonne-IUFM de Paris, Paris, France
| | - Florence Cloppet
- From CNRS UMR 8601, Université Paris Descartes, LCPBT; CNRS UMR 8145, Université Paris Descartes, MAP5, Université Paris Descartes, LIPADE, EA2517, Université Paris Descartes, INSERM UMR-S747, Department of Physical Medicine and Rehabilitation, Cochin Hospital (AP-HP), Université Paris Descartes; and Université Paris Sorbonne-IUFM de Paris, Paris, France
| | - Caroline Chauvet
- From CNRS UMR 8601, Université Paris Descartes, LCPBT; CNRS UMR 8145, Université Paris Descartes, MAP5, Université Paris Descartes, LIPADE, EA2517, Université Paris Descartes, INSERM UMR-S747, Department of Physical Medicine and Rehabilitation, Cochin Hospital (AP-HP), Université Paris Descartes; and Université Paris Sorbonne-IUFM de Paris, Paris, France
| | - Marie-Thérèse Corvol
- From CNRS UMR 8601, Université Paris Descartes, LCPBT; CNRS UMR 8145, Université Paris Descartes, MAP5, Université Paris Descartes, LIPADE, EA2517, Université Paris Descartes, INSERM UMR-S747, Department of Physical Medicine and Rehabilitation, Cochin Hospital (AP-HP), Université Paris Descartes; and Université Paris Sorbonne-IUFM de Paris, Paris, France
| | - François Rannou
- From CNRS UMR 8601, Université Paris Descartes, LCPBT; CNRS UMR 8145, Université Paris Descartes, MAP5, Université Paris Descartes, LIPADE, EA2517, Université Paris Descartes, INSERM UMR-S747, Department of Physical Medicine and Rehabilitation, Cochin Hospital (AP-HP), Université Paris Descartes; and Université Paris Sorbonne-IUFM de Paris, Paris, France
| | - Yun Xu-Li
- From CNRS UMR 8601, Université Paris Descartes, LCPBT; CNRS UMR 8145, Université Paris Descartes, MAP5, Université Paris Descartes, LIPADE, EA2517, Université Paris Descartes, INSERM UMR-S747, Department of Physical Medicine and Rehabilitation, Cochin Hospital (AP-HP), Université Paris Descartes; and Université Paris Sorbonne-IUFM de Paris, Paris, France
| | - Daniel Mansuy
- From CNRS UMR 8601, Université Paris Descartes, LCPBT; CNRS UMR 8145, Université Paris Descartes, MAP5, Université Paris Descartes, LIPADE, EA2517, Université Paris Descartes, INSERM UMR-S747, Department of Physical Medicine and Rehabilitation, Cochin Hospital (AP-HP), Université Paris Descartes; and Université Paris Sorbonne-IUFM de Paris, Paris, France
| | - Fabienne Peyrot
- From CNRS UMR 8601, Université Paris Descartes, LCPBT; CNRS UMR 8145, Université Paris Descartes, MAP5, Université Paris Descartes, LIPADE, EA2517, Université Paris Descartes, INSERM UMR-S747, Department of Physical Medicine and Rehabilitation, Cochin Hospital (AP-HP), Université Paris Descartes; and Université Paris Sorbonne-IUFM de Paris, Paris, France
| | - Yves-Michel Frapart
- From CNRS UMR 8601, Université Paris Descartes, LCPBT; CNRS UMR 8145, Université Paris Descartes, MAP5, Université Paris Descartes, LIPADE, EA2517, Université Paris Descartes, INSERM UMR-S747, Department of Physical Medicine and Rehabilitation, Cochin Hospital (AP-HP), Université Paris Descartes; and Université Paris Sorbonne-IUFM de Paris, Paris, France
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20
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Decroos C, Prangé T, Mansuy D, Boucher JL, Li Y. Unprecedented ipso aromatic nucleophilic substitution upon oxidative decarboxylation of tris(p-carboxyltetrathiaaryl)methyl (TAM) radicals: a new access to diversely substituted TAM radicals. Chem Commun (Camb) 2011; 47:4805-7. [PMID: 21412549 DOI: 10.1039/c1cc10426h] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new reaction of oxidative substitution of aromatic carboxyl groups on stable trityl radical derivatives (TAMs) by various nucleophiles is described; it leads to a wide variety of new persistent and diversely substituted TAM radicals.
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Affiliation(s)
- Christophe Decroos
- Laboratoire de Chimie et Biochimie Pharmacologiques et Toxicologiques, Université Paris Descartes, UMR 8601 CNRS, 45 Rue des Saints Pères, 75270 Paris cedex 06, France
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21
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Decroos C, Li Y, Soltani A, Frapart Y, Mansuy D, Boucher JL. Oxidative decarboxylation of tris-(p-carboxyltetrathiaaryl)methyl radical EPR probes by peroxidases and related hemeproteins: Intermediate formation and characterization of the corresponding cations. Arch Biochem Biophys 2010; 502:74-80. [DOI: 10.1016/j.abb.2010.07.002] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2010] [Revised: 06/08/2010] [Accepted: 07/01/2010] [Indexed: 01/04/2023]
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22
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Decroos C, Li Y, Bertho G, Frapart Y, Mansuy D, Boucher JL. Oxidative and Reductive Metabolism of Tris(p-carboxyltetrathiaaryl)methyl Radicals by Liver Microsomes. Chem Res Toxicol 2009; 22:1342-50. [DOI: 10.1021/tx9001379] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Christophe Decroos
- Laboratoire de Chimie et Biochimie Pharmacologiques et Toxicologiques, UMR 8601 CNRS, Université Paris Descartes, 45 rue des Saints Pères, 75270 Paris Cedex 06, France
| | - Yun Li
- Laboratoire de Chimie et Biochimie Pharmacologiques et Toxicologiques, UMR 8601 CNRS, Université Paris Descartes, 45 rue des Saints Pères, 75270 Paris Cedex 06, France
| | - Gildas Bertho
- Laboratoire de Chimie et Biochimie Pharmacologiques et Toxicologiques, UMR 8601 CNRS, Université Paris Descartes, 45 rue des Saints Pères, 75270 Paris Cedex 06, France
| | - Yves Frapart
- Laboratoire de Chimie et Biochimie Pharmacologiques et Toxicologiques, UMR 8601 CNRS, Université Paris Descartes, 45 rue des Saints Pères, 75270 Paris Cedex 06, France
| | - Daniel Mansuy
- Laboratoire de Chimie et Biochimie Pharmacologiques et Toxicologiques, UMR 8601 CNRS, Université Paris Descartes, 45 rue des Saints Pères, 75270 Paris Cedex 06, France
| | - Jean-Luc Boucher
- Laboratoire de Chimie et Biochimie Pharmacologiques et Toxicologiques, UMR 8601 CNRS, Université Paris Descartes, 45 rue des Saints Pères, 75270 Paris Cedex 06, France
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