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Chen Y, Hu J, Ding A. Aerobic photooxidative hydroxylation of boronic acids catalyzed by anthraquinone-containing polymeric photosensitizer. RSC Adv 2020; 10:7927-7932. [PMID: 35492190 PMCID: PMC9049903 DOI: 10.1039/d0ra00176g] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2020] [Accepted: 02/17/2020] [Indexed: 11/21/2022] Open
Abstract
We report herein the synthesis of a polymeric photosensitizer and its application in aerobic photooxidative hydroxylation of boronic acids.
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Affiliation(s)
- Yang Chen
- State Key Laboratory of Molecular Engineering of Polymers
- Department of Macromolecular Science
- Fudan University
- Shanghai 200438
- PR China
| | - Jianhua Hu
- State Key Laboratory of Molecular Engineering of Polymers
- Department of Macromolecular Science
- Fudan University
- Shanghai 200438
- PR China
| | - Aishun Ding
- Department of Chemistry
- Fudan University
- Shanghai 200438
- PR China
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2
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Ding A, Zhang Y, Chen Y, Rios R, Hu J, Guo H. Visible light induced oxidative hydroxylation of boronic acids. Tetrahedron Lett 2019. [DOI: 10.1016/j.tetlet.2019.01.052] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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3
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Besson E, Gastaldi S, Bloch E, Zielonka J, Zielonka M, Kalyanaraman B, Aslan S, Karoui H, Rockenbauer A, Ouari O, Hardy M. Embedding cyclic nitrone in mesoporous silica particles for EPR spin trapping of superoxide and other radicals. Analyst 2019; 144:4194-4203. [DOI: 10.1039/c9an00468h] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Mesoporous silica functionalised with a cyclic spin trap enabled the identification of a wide range of radicals in organic and aqueous media, including superoxide radical anion.
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Affiliation(s)
| | | | - Emily Bloch
- Aix Marseille Univ
- CNRS
- MADIREL
- Marseille
- France
| | - Jacek Zielonka
- Department of Biophysics
- Medical College of Wisconsin
- Milwaukee
- USA
- Free Radical Research Center
| | - Monika Zielonka
- Department of Biophysics
- Medical College of Wisconsin
- Milwaukee
- USA
- Free Radical Research Center
| | - Balaraman Kalyanaraman
- Department of Biophysics
- Medical College of Wisconsin
- Milwaukee
- USA
- Free Radical Research Center
| | | | | | - Antal Rockenbauer
- Institute of Materials and Environmental Chemistry
- Research Centre for Natural Sciences
- Hungarian Academy of Sciences
- 1117 Budapest
- Hungary
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4
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Zielonka J, Sikora A, Hardy M, Ouari O, Vasquez-Vivar J, Cheng G, Lopez M, Kalyanaraman B. Mitochondria-Targeted Triphenylphosphonium-Based Compounds: Syntheses, Mechanisms of Action, and Therapeutic and Diagnostic Applications. Chem Rev 2017; 117:10043-10120. [PMID: 28654243 PMCID: PMC5611849 DOI: 10.1021/acs.chemrev.7b00042] [Citation(s) in RCA: 909] [Impact Index Per Article: 129.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Mitochondria are recognized as one of the most important targets for new drug design in cancer, cardiovascular, and neurological diseases. Currently, the most effective way to deliver drugs specifically to mitochondria is by covalent linking a lipophilic cation such as an alkyltriphenylphosphonium moiety to a pharmacophore of interest. Other delocalized lipophilic cations, such as rhodamine, natural and synthetic mitochondria-targeting peptides, and nanoparticle vehicles, have also been used for mitochondrial delivery of small molecules. Depending on the approach used, and the cell and mitochondrial membrane potentials, more than 1000-fold higher mitochondrial concentration can be achieved. Mitochondrial targeting has been developed to study mitochondrial physiology and dysfunction and the interaction between mitochondria and other subcellular organelles and for treatment of a variety of diseases such as neurodegeneration and cancer. In this Review, we discuss efforts to target small-molecule compounds to mitochondria for probing mitochondria function, as diagnostic tools and potential therapeutics. We describe the physicochemical basis for mitochondrial accumulation of lipophilic cations, synthetic chemistry strategies to target compounds to mitochondria, mitochondrial probes, and sensors, and examples of mitochondrial targeting of bioactive compounds. Finally, we review published attempts to apply mitochondria-targeted agents for the treatment of cancer and neurodegenerative diseases.
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Affiliation(s)
- Jacek Zielonka
- Department of Biophysics, Medical College of Wisconsin, 8701 Watertown Plank Road, Milwaukee, WI 53226, United States
- Free Radical Research Center, Medical College of Wisconsin, 8701 Watertown Plank Road, Milwaukee, WI 53226, United States
- Cancer Center, Medical College of Wisconsin, 8701 Watertown Plank Road, Milwaukee, WI 53226, United States
| | - Adam Sikora
- Institute of Applied Radiation Chemistry, Lodz University of Technology, ul. Wroblewskiego 15, 93-590 Lodz, Poland
| | - Micael Hardy
- Aix Marseille Univ, CNRS, ICR, UMR 7273, 13013 Marseille, France
| | - Olivier Ouari
- Aix Marseille Univ, CNRS, ICR, UMR 7273, 13013 Marseille, France
| | - Jeannette Vasquez-Vivar
- Department of Biophysics, Medical College of Wisconsin, 8701 Watertown Plank Road, Milwaukee, WI 53226, United States
- Free Radical Research Center, Medical College of Wisconsin, 8701 Watertown Plank Road, Milwaukee, WI 53226, United States
| | - Gang Cheng
- Department of Biophysics, Medical College of Wisconsin, 8701 Watertown Plank Road, Milwaukee, WI 53226, United States
- Free Radical Research Center, Medical College of Wisconsin, 8701 Watertown Plank Road, Milwaukee, WI 53226, United States
| | - Marcos Lopez
- Translational Biomedical Research Group, Biotechnology Laboratories, Cardiovascular Foundation of Colombia, Carrera 5a No. 6-33, Floridablanca, Santander, Colombia, 681003
- Graduate Program of Biomedical Sciences, Faculty of Health, Universidad del Valle, Calle 4B No. 36-00, Cali, Colombia, 760032
| | - Balaraman Kalyanaraman
- Department of Biophysics, Medical College of Wisconsin, 8701 Watertown Plank Road, Milwaukee, WI 53226, United States
- Free Radical Research Center, Medical College of Wisconsin, 8701 Watertown Plank Road, Milwaukee, WI 53226, United States
- Cancer Center, Medical College of Wisconsin, 8701 Watertown Plank Road, Milwaukee, WI 53226, United States
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5
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Bai Z, Ji L, Ge Z, Wang X, Li R. Asymmetric Michael addition reactions of nitroalkanes to 2-furanones catalyzed by bifunctional thiourea catalysts. Org Biomol Chem 2015; 13:5363-6. [DOI: 10.1039/c5ob00708a] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The first bifunctional thiourea catalyzed asymmetric Michael addition reactions of nitroalkanes to 2-furanones are described.
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Affiliation(s)
- Zhushuang Bai
- State Key Laboratory of Nature and Biomimtic Drugs
- School of Pharmaceutical Sciences
- Peking University
- Beijing 100191
- China
| | - Ling Ji
- State Key Laboratory of Nature and Biomimtic Drugs
- School of Pharmaceutical Sciences
- Peking University
- Beijing 100191
- China
| | - Zemei Ge
- State Key Laboratory of Nature and Biomimtic Drugs
- School of Pharmaceutical Sciences
- Peking University
- Beijing 100191
- China
| | - Xin Wang
- State Key Laboratory of Nature and Biomimtic Drugs
- School of Pharmaceutical Sciences
- Peking University
- Beijing 100191
- China
| | - Runtao Li
- State Key Laboratory of Nature and Biomimtic Drugs
- School of Pharmaceutical Sciences
- Peking University
- Beijing 100191
- China
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6
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Karoui H, Nsanzumuhire C, Le Moigne F, Hardy M, Siri D, Derat E, Rockenbauer A, Ouari O, Tordo P. Synthesis and spin-trapping properties of a trifluoromethyl analogue of DMPO: 5-methyl-5-trifluoromethyl-1-pyrroline N-oxide (5-TFDMPO). Chemistry 2014; 20:4064-71. [PMID: 24590621 DOI: 10.1002/chem.201303774] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2013] [Indexed: 11/05/2022]
Abstract
The 5-diethoxyphosphonyl-5-methyl-1-pyrroline N-oxide superoxide spin adduct (DEPMPO-OOH) is much more persistent (about 15 times) than the 5,5-dimethyl-1-pyrroline N-oxide superoxide spin adduct (DMPO-OOH). The diethoxyphosphonyl group is bulkier than the methyl group and its electron-withdrawing effect is much stronger. These two factors could play a role in explaining the different half-lifetimes of DMPO-OOH and DEPMPO-OOH. The trifluoromethyl and the diethoxyphosphonyl groups show similar electron-withdrawing effects but have different sizes. We have thus synthesized and studied 5-methyl-5-trifluoromethyl-1-pyrroline N-oxide (5-TFDMPO), a new trifluoromethyl analogue of DMPO, to compare its spin-trapping performance with those of DMPO and DEPMPO. 5-TFDMPO was prepared in a five-step sequence by means of the Zn/AcOH reductive cyclization of 5,5,5-trifluoro-4-methyl-4-nitropentanal, and the geometry of the molecule was estimated by using DFT calculations. The spin-trapping properties were investigated both in toluene and in aqueous buffer solutions for oxygen-, sulfur-, and carbon-centered radicals. All the spin adducts exhibit slightly different fluorine hyperfine coupling constants, thereby suggesting a hindered rotation of the trifluoromethyl group, which was confirmed by variable-temperature EPR studies and DFT calculations. In phosphate buffer at pH 7.4, the half-life of 5-TFDMPOOOH is about three times shorter than for DEPMPO-OOH and five times longer than for DMPO-OOH. Our results suggest that the stabilization of the superoxide adducts comes from a delicate balance between steric, electronic, and hydrogen-bonding effects that involve the β group, the hydroperoxyl moiety, and the nitroxide.
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Affiliation(s)
- Hakim Karoui
- Aix-Marseille Université, CNRS UMR7273, Institut de Chimie Radicalaire (ICR), Case 521, Avenue Escadrille Normandie-Niemen, 13397 Marseille Cedex 20 (France), Fax: (+33) 491-288-758
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7
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Chalier F, Clément JL, Hardy M, Tordo P, Rockenbauer A. ESR study of the spin adducts of three analogues of DEPMPO substituted at C4or C3. RSC Adv 2014. [DOI: 10.1039/c3ra46913a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Average geometries of the nitroxide adducts of various radicals with three substituted DEPMPO nitrones allow the prediction of a correlation between the substitution and the trapping properties.
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Affiliation(s)
- Florence Chalier
- Laboratoire SREP
- Institut de Chimie Radicalaire – UMR 7273
- CNRS and Aix-Marseille Univ. – case 521
- Centre de Saint Jérôme
- , France
| | - Jean-Louis Clément
- Laboratoire SREP
- Institut de Chimie Radicalaire – UMR 7273
- CNRS and Aix-Marseille Univ. – case 521
- Centre de Saint Jérôme
- , France
| | - Micaël Hardy
- Laboratoire SREP
- Institut de Chimie Radicalaire – UMR 7273
- CNRS and Aix-Marseille Univ. – case 521
- Centre de Saint Jérôme
- , France
| | - Paul Tordo
- Laboratoire SREP
- Institut de Chimie Radicalaire – UMR 7273
- CNRS and Aix-Marseille Univ. – case 521
- Centre de Saint Jérôme
- , France
| | - Antal Rockenbauer
- Research Centre for Natural Sciences
- Institute for Molecular Pharmacology
- H-1525 Budapest, Hungary
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8
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Floyd RA, Castro Faria Neto HC, Zimmerman GA, Hensley K, Towner RA. Nitrone-based therapeutics for neurodegenerative diseases: their use alone or in combination with lanthionines. Free Radic Biol Med 2013; 62:145-156. [PMID: 23419732 PMCID: PMC3715559 DOI: 10.1016/j.freeradbiomed.2013.01.033] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/24/2012] [Revised: 01/25/2013] [Accepted: 01/29/2013] [Indexed: 01/12/2023]
Abstract
The possibility of free radical reactions occurring in biological processes led to the development and employment of novel methods and techniques focused on determining their existence and importance in normal and pathological conditions. For this reason the use of nitrones for spin trapping free radicals became widespread in the 1970s and 1980s, when surprisingly the first evidence of their potent biological properties was noted. Since then widespread exploration and demonstration of the potent biological properties of phenyl-tert-butylnitrone (PBN) and its derivatives took place in preclinical models of septic shock and then in experimental stroke. The most extensive commercial effort made to capitalize on the potent properties of the PBN-nitrones was for acute ischemic stroke. This occurred during 1993-2006, when the 2,4-disulfonylphenyl PBN derivative, called NXY-059 in the stroke studies, was shown to be safe in humans and was taken all the way through clinical phase 3 trials and then was deemed to be ineffective. As summarized in this review, because of its excellent human safety profile, 2,4-disulfonylphenyl PBN, now called OKN-007 in the cancer studies, was tested as an anti-cancer agent in several preclinical glioma models and shown to be very effective. Based on these studies this compound is now scheduled to enter into early clinical trials for astrocytoma/glioblastoma multiforme this year. The potential use of OKN-007 in combination with neurotropic compounds such as the lanthionine ketamine esters is discussed for glioblastoma multiforme as well as for various other indications leading to dementia, such as aging, septic shock, and malaria infections. There is much more research and development activity ongoing for various indications with the nitrones, alone or in combination with other active compounds, as briefly noted in this review.
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Affiliation(s)
- Robert A Floyd
- Experimental Therapeutics, Oklahoma Medical Research Foundation, Oklahoma City, OK 73104, USA.
| | | | - Guy A Zimmerman
- Laboratorio de Immunofarmacologia, Instituto Oswaldo Cruz, IOC, Fiocruz, Rio de Janeiro, Brazil; Department of Medicine, University of Utah School of Medicine, Salt Lake City, Utah, USA
| | - Kenneth Hensley
- Department of Pathology and Department of Neurosciences, University of Toledo Medical Center, Toledo, OH
| | - Rheal A Towner
- Advanced Magnetic Resonance Center, Oklahoma Medical Research Foundation, Oklahoma City, OK 73104, USA
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9
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Patel A, Rohr-Udilova N, Rosenau T, Stolze K. Synthesis and characterization of 5-alkoxycarbonyl-4-hydroxymethyl-5-alkyl-pyrroline N-oxide derivatives. Bioorg Med Chem 2011; 19:7643-52. [PMID: 22094277 DOI: 10.1016/j.bmc.2011.10.017] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2011] [Revised: 09/12/2011] [Accepted: 10/07/2011] [Indexed: 10/16/2022]
Abstract
The syntheses, analytical properties, and spin trapping behavior of four novel EMPO derivatives, namely 5-ethoxycarbonyl-4-hydroxymethyl-5-methyl-pyrroline N-oxide (EHMPO), 5-ethoxycarbonyl-5-ethyl-4-hydroxymethyl-pyrroline N-oxide (EEHPO), 4-hydroxymethyl-5-methyl-5-propoxycarbonyl-pyrroline N-oxide (HMPPO), and 4-hydroxymethyl-5-methyl-5-iso-propoxycarbonyl-pyrroline N-oxide (HMiPPO), towards different oxygen- and carbon-centered radicals are described.
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Affiliation(s)
- Anjan Patel
- Department of Chemistry, University of Natural Resources and Life Sciences (BOKU), Muthgasse 18, A-1190 Vienna, Austria
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10
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Gosset G, Clément JL, Culcasi M, Rockenbauer A, Pietri S. CyDEPMPOs: A class of stable cyclic DEPMPO derivatives with improved properties as mechanistic markers of stereoselective hydroxyl radical adduct formation in biological systems. Bioorg Med Chem 2011; 19:2218-30. [DOI: 10.1016/j.bmc.2011.02.040] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2010] [Revised: 02/14/2011] [Accepted: 02/18/2011] [Indexed: 11/28/2022]
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11
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Stolze K, Rohr-Udilova N, Patel A, Rosenau T. Synthesis and characterization of 5-hydroxymethyl-5-methyl-pyrroline N-oxide and its derivatives. Bioorg Med Chem 2011; 19:985-93. [PMID: 21211983 DOI: 10.1016/j.bmc.2010.11.052] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2010] [Revised: 11/17/2010] [Accepted: 11/20/2010] [Indexed: 11/24/2022]
Abstract
Synthesis and spin trapping behavior of three novel DMPO derivatives, namely 5-hydroxymethyl-5-methyl-pyrroline N-oxide (HMMPO), 5-(2-furanyl)-oxymethyl-5-methyl-pyrroline N-oxide (FMMPO), and 5-(2-pyranyl)-oxymethyl-5-methyl-pyrroline N-oxide (PMMPO) towards different oxygen- and carbon-centered radicals are described. The stabilizing effect of a series of cyclodextrins on the superoxide adducts was tested.
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Affiliation(s)
- Klaus Stolze
- Department of Biomedical Sciences, University of Veterinary Medicine Vienna, Austria.
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12
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Lardinois OM, Chatterjee S, Mason RP, Tomer KB, Deterding LJ. Biotinylated analogue of the spin-trap 5,5-dimethyl-1-pyrroline-N-oxide for the detection of low-abundance protein radicals by mass spectrometry. Anal Chem 2010; 82:9155-8. [PMID: 20957988 DOI: 10.1021/ac1023183] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Protein radicals are implicated in oxidative stress and are associated with a wide range of diseases and disorders. In the present work, we describe the specific application of a newly synthesized nitrone spin trap, Bio-SS-DMPO, for the detection of these highly reactive species by mass spectrometry (MS). Bio-SS-DMPO is a biotinylated analogue of the spin-trap 5,5-dimethyl-1-pyrroline-N-oxide (DMPO) that allows for specific capture of the protein(s)/peptide(s) labeled by the spin-trap on a (strept)avidin-bound solid matrix. The disulfide bond in the linker arm joining biotin to DMPO can be cleaved to release captured spin-adduct peptide from the solid matrix. This (strept)avidin-based affinity purification reduces the complexity of the samples prior to MS analyses, thereby facilitating the location of the sites of spin trap addition. In addition, the biotin moiety on the spin-trap can efficiently be probed with (strept)avidin-conjugated reporter. This offers an effective means to visualize the presence of DMPO-adducted proteins in intact cells.
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13
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Houriez C, Masella M, Ferré N. Structural and atoms-in-molecules analysis of hydrogen-bond network around nitroxides in liquid water. J Chem Phys 2010; 133:124508. [DOI: 10.1063/1.3478999] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
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14
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Cheng Q, Antholine WE, Myers JM, Kalyanaraman B, Arnér ESJ, Myers CR. The selenium-independent inherent pro-oxidant NADPH oxidase activity of mammalian thioredoxin reductase and its selenium-dependent direct peroxidase activities. J Biol Chem 2010; 285:21708-23. [PMID: 20457604 DOI: 10.1074/jbc.m110.117259] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Mammalian thioredoxin reductase (TrxR) is an NADPH-dependent homodimer with three redox-active centers per subunit: a FAD, an N-terminal domain dithiol (Cys(59)/Cys(64)), and a C-terminal cysteine/selenocysteine motif (Cys(497)/Sec(498)). TrxR has multiple roles in antioxidant defense. Opposing these functions, it may also assume a pro-oxidant role under some conditions. In the absence of its main electron-accepting substrates (e.g. thioredoxin), wild-type TrxR generates superoxide (O ), which was here detected and quantified by ESR spin trapping with 5-diethoxyphosphoryl-5-methyl-1-pyrroline-N-oxide (DEPMPO). The peroxidase activity of wild-type TrxR efficiently converted the O adduct (DEPMPO/HOO(*)) to the hydroxyl radical adduct (DEPMPO/HO(*)). This peroxidase activity was Sec-dependent, although multiple mutants lacking Sec could still generate O . Variants of TrxR with C59S and/or C64S mutations displayed markedly reduced inherent NADPH oxidase activity, suggesting that the Cys(59)/Cys(64) dithiol is required for O generation and that O is not derived directly from the FAD. Mutations in the Cys(59)/Cys(64) dithiol also blocked the peroxidase and disulfide reductase activities presumably because of an inability to reduce the Cys(497)/Sec(498) active site. Although the bulk of the DEPMPO/HO(*) signal generated by wild-type TrxR was due to its combined NADPH oxidase and Sec-dependent peroxidase activities, additional experiments showed that some free HO(*) could be generated by the enzyme in an H(2)O(2)-dependent and Sec-independent manner. The direct NADPH oxidase and peroxidase activities of TrxR characterized here give insights into the full catalytic potential of this enzyme and may have biological consequences beyond those solely related to its reduction of thioredoxin.
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Affiliation(s)
- Qing Cheng
- Department of Pharmacology and Toxicology, MedicalCollege of Wisconsin, Milwaukee, Wisconsin 53226, USA
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15
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Houriez C, Ferré N, Siri D, Masella M. Further Insights into the Environmental Effects on the Computed Hyperfine Coupling Constants of Nitroxides in Aqueous Solution. J Phys Chem B 2009; 113:15047-56. [DOI: 10.1021/jp906828v] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Céline Houriez
- UMR 6264 Laboratoire Chimie Provence, Faculté des Sciences de Saint-Jérôme Case 521, Avenue Escadrille Normandie-Niemen, 13397 Marseille Cedex 20, France, UMR 8000 Laboratoire de Chimie Physique, Université Paris-Sud 11, 91405 Orsay Cedex, France, and Laboratoire de Chimie du Vivant, Service d’ingénierie moléculaire des protéines, Institut de biologie et de technologies de Saclay, Commissariat à l’énergie atomique, Centre de Saclay, 91191 Gif-sur-Yvette Cedex, France
| | - Nicolas Ferré
- UMR 6264 Laboratoire Chimie Provence, Faculté des Sciences de Saint-Jérôme Case 521, Avenue Escadrille Normandie-Niemen, 13397 Marseille Cedex 20, France, UMR 8000 Laboratoire de Chimie Physique, Université Paris-Sud 11, 91405 Orsay Cedex, France, and Laboratoire de Chimie du Vivant, Service d’ingénierie moléculaire des protéines, Institut de biologie et de technologies de Saclay, Commissariat à l’énergie atomique, Centre de Saclay, 91191 Gif-sur-Yvette Cedex, France
| | - Didier Siri
- UMR 6264 Laboratoire Chimie Provence, Faculté des Sciences de Saint-Jérôme Case 521, Avenue Escadrille Normandie-Niemen, 13397 Marseille Cedex 20, France, UMR 8000 Laboratoire de Chimie Physique, Université Paris-Sud 11, 91405 Orsay Cedex, France, and Laboratoire de Chimie du Vivant, Service d’ingénierie moléculaire des protéines, Institut de biologie et de technologies de Saclay, Commissariat à l’énergie atomique, Centre de Saclay, 91191 Gif-sur-Yvette Cedex, France
| | - Michel Masella
- UMR 6264 Laboratoire Chimie Provence, Faculté des Sciences de Saint-Jérôme Case 521, Avenue Escadrille Normandie-Niemen, 13397 Marseille Cedex 20, France, UMR 8000 Laboratoire de Chimie Physique, Université Paris-Sud 11, 91405 Orsay Cedex, France, and Laboratoire de Chimie du Vivant, Service d’ingénierie moléculaire des protéines, Institut de biologie et de technologies de Saclay, Commissariat à l’énergie atomique, Centre de Saclay, 91191 Gif-sur-Yvette Cedex, France
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16
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Han Y, Liu Y, Rockenbauer A, Zweier JL, Durana G, Villamena FA. Lipophilic beta-cyclodextrin cyclic-nitrone conjugate: synthesis and spin trapping studies. J Org Chem 2009; 74:5369-80. [PMID: 19530689 PMCID: PMC2736355 DOI: 10.1021/jo900856x] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Nitrone spin traps are commonly employed as probes for the identification of transient radicals in chemical and biological systems using electron paramagnetic resonance (EPR) spectroscopy. Nitrones have also found applications as therapeutic agent in the treatment of radical-mediated diseases. Therefore, a spin trap that incorporates high reactivity to superoxide radical anion (O2(*-)), more persistent superoxide adduct, enhanced bioavailability, and selective targeting in one molecular design is desirable. In this work, the synthesis of a nitrone spin trap, 4, that is tethered via amide bonds to a beta-cyclodextrin (beta-CD) and a dodecyl chain was achieved with the expectation that the beta-cyclodextrin would lead to increased reactivity to O2(*-) and persistent O2(*-) adduct while the lipophilic chain would impart membrane targeting property. The two constitutional racemic isomers, 4a and 4b, were separated using preparative HPLC, and structural analysis and self-aggregation properties were carried out using NMR, induced circular dichroism, dynamic light scattering, transmission electron microscopy, and computational approach. EPR spin trapping of O2(*-) by 4a and 4b was only successful in DMSO and not in an aqueous system, due most likely to the amphiphilic character of 4 that can favor conformations (or aggregation) hindering radical addition to nitrone. Kinetics of formation and decay of the 4a-O2H adduct in polar aprotic solvents show faster reactivity to O2(*-) and more persistent O2(*-) adduct compared to nitrones not conjugated to beta-CD. Computational analysis of 4a and 4b as well as 4a-OOH and 4b-OOH adducts were carried out, and results show that isomerism, both constitutional and stereochemical, affects the orientations of aminoxyl-NO and/or hydroperoxyl groups relative to the beta-CD annulus for optimal H-bond interaction and stability.
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Affiliation(s)
- Yongbin Han
- Department of Pharmacology, The Davis Heart and Lung Research Institute, College of Medicine, The Ohio State University, Columbus, OH 43210
| | - Yangping Liu
- Center for Biomedical EPR Spectroscopy and Imaging, The Davis Heart and Lung Research Institute, College of Medicine, The Ohio State University, Columbus, OH 43210
| | - Antal Rockenbauer
- Chemical Research Center, Institute of Structural Chemistry, H-1025 Budapest, Pusztaszeri 59, Hungary
| | - Jay L. Zweier
- Center for Biomedical EPR Spectroscopy and Imaging, The Davis Heart and Lung Research Institute, College of Medicine, The Ohio State University, Columbus, OH 43210
| | - Grégory Durana
- Laboratoire de Chimie BioOrganique et des Systèmes Moléculaires Vectoriels, Faculté des Sciences, Université d’Avignon et des Pays de Vaucluse, 33 Rue Louis Pasteur, 84000 Avignon, France
| | - Frederick A. Villamena
- Department of Pharmacology, The Davis Heart and Lung Research Institute, College of Medicine, The Ohio State University, Columbus, OH 43210
- Center for Biomedical EPR Spectroscopy and Imaging, The Davis Heart and Lung Research Institute, College of Medicine, The Ohio State University, Columbus, OH 43210
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