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Mongirdienė A, Skrodenis L, Varoneckaitė L, Mierkytė G, Gerulis J. Reactive Oxygen Species Induced Pathways in Heart Failure Pathogenesis and Potential Therapeutic Strategies. Biomedicines 2022; 10:biomedicines10030602. [PMID: 35327404 PMCID: PMC8945343 DOI: 10.3390/biomedicines10030602] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2022] [Revised: 02/25/2022] [Accepted: 03/02/2022] [Indexed: 02/07/2023] Open
Abstract
With respect to structural and functional cardiac disorders, heart failure (HF) is divided into HF with reduced ejection fraction (HFrEF) and HF with preserved ejection fraction (HFpEF). Oxidative stress contributes to the development of both HFrEF and HFpEF. Identification of a broad spectrum of reactive oxygen species (ROS)-induced pathways in preclinical models has provided new insights about the importance of ROS in HFrEF and HFpEF development. While current treatment strategies mostly concern neuroendocrine inhibition, recent data on ROS-induced metabolic pathways in cardiomyocytes may offer additional treatment strategies and targets for both of the HF forms. The purpose of this article is to summarize the results achieved in the fields of: (1) ROS importance in HFrEF and HFpEF pathophysiology, and (2) treatments for inhibiting ROS-induced pathways in HFrEF and HFpEF patients. ROS-producing pathways in cardiomyocytes, ROS-activated pathways in different HF forms, and treatment options to inhibit their action are also discussed.
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Affiliation(s)
- Aušra Mongirdienė
- Department of Biochemistry, Medical Academy, Lithuanian University of Health Sciences, Eiveniu str. 4, LT-50161 Kaunas, Lithuania
- Correspondence: or ; Tel.: +370-837361768
| | - Laurynas Skrodenis
- Medical Academy, Lithuanian University of Health Sciences, Mickevičiaus str. 9, LT-44307 Kaunas, Lithuania; (L.S.); (L.V.); (G.M.); (J.G.)
| | - Leila Varoneckaitė
- Medical Academy, Lithuanian University of Health Sciences, Mickevičiaus str. 9, LT-44307 Kaunas, Lithuania; (L.S.); (L.V.); (G.M.); (J.G.)
| | - Gerda Mierkytė
- Medical Academy, Lithuanian University of Health Sciences, Mickevičiaus str. 9, LT-44307 Kaunas, Lithuania; (L.S.); (L.V.); (G.M.); (J.G.)
| | - Justinas Gerulis
- Medical Academy, Lithuanian University of Health Sciences, Mickevičiaus str. 9, LT-44307 Kaunas, Lithuania; (L.S.); (L.V.); (G.M.); (J.G.)
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Sun HJ, Wu ZY, Cao L, Zhu MY, Nie XW, Huang DJ, Sun MT, Bian JS. Role of nitroxyl (HNO) in cardiovascular system: From biochemistry to pharmacology. Pharmacol Res 2020; 159:104961. [DOI: 10.1016/j.phrs.2020.104961] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/08/2020] [Revised: 05/16/2020] [Accepted: 05/24/2020] [Indexed: 12/12/2022]
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3
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Sun HJ, Lee WT, Leng B, Wu ZY, Yang Y, Bian JS. Nitroxyl as a Potential Theranostic in the Cancer Arena. Antioxid Redox Signal 2020; 32:331-349. [PMID: 31617376 DOI: 10.1089/ars.2019.7904] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Significance: As one-electron reduced molecule of nitric oxide (NO), nitroxyl (HNO) has gained enormous attention because of its novel physiological or pharmacological properties, ranging from cardiovascular protective actions to antitumoricidal effects. Recent Advances: HNO is emerging as a new entity with therapeutic advantages over its redox sibling, NO. The interests in the chemical, pharmacological, and biological characteristics of HNO have broadened our current understanding of its role in physiology and pathophysiology. Critical Issues: In particular, the experimental evidence suggests the therapeutic potential of HNO in tumor pharmacology, such as neuroblastoma, gastrointestinal tumor, ovarian, lung, and breast cancers. Indeed, HNO donors have been demonstrated to attenuate tumor proliferation and angiogenesis. Future Directions: In this review, the generation and detection of HNO are outlined, and the roles of HNO in cancer progression are further discussed. We anticipate that the completion of this review might give novel insights into the roles of HNO in cancer pharmacology and open up a novel field of cancer therapy based on HNO.
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Affiliation(s)
- Hai-Jian Sun
- Department of Pharmacology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Wei-Thye Lee
- Department of Pharmacology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Bin Leng
- Department of Pharmacology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Zhi-Yuan Wu
- Department of Pharmacology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Yong Yang
- State Key Laboratory of Natural Medicines, Jiangsu Key Laboratory of Drug Discovery for Metabolic Disease, Center for New Drug Safety Evaluation and Research, China Pharmaceutical University, Nanjing, China
| | - Jin-Song Bian
- Department of Pharmacology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore.,National University of Singapore (Suzhou) Research Institute, Suzhou, China
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Comparison of the chemical reactivity of synthetic peroxynitrite with that of the autoxidation products of nitroxyl or its anion. Nitric Oxide 2015; 44:39-46. [DOI: 10.1016/j.niox.2014.11.002] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2014] [Revised: 10/21/2014] [Accepted: 11/03/2014] [Indexed: 11/18/2022]
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Cytotoxicity of nitroxyl (HNO/NO−) against normal and cancer human cells. Chem Biol Interact 2013; 206:262-71. [DOI: 10.1016/j.cbi.2013.09.019] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2013] [Revised: 09/09/2013] [Accepted: 09/30/2013] [Indexed: 01/17/2023]
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Fukuto JM, Cisneros CJ, Kinkade RL. A comparison of the chemistry associated with the biological signaling and actions of nitroxyl (HNO) and nitric oxide (NO). J Inorg Biochem 2013; 118:201-8. [DOI: 10.1016/j.jinorgbio.2012.08.027] [Citation(s) in RCA: 76] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2012] [Revised: 08/15/2012] [Accepted: 08/24/2012] [Indexed: 10/27/2022]
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7
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Meng FG, Zhang ZY. Redox regulation of protein tyrosine phosphatase activity by hydroxyl radical. BIOCHIMICA ET BIOPHYSICA ACTA-PROTEINS AND PROTEOMICS 2012; 1834:464-9. [PMID: 22819876 DOI: 10.1016/j.bbapap.2012.06.018] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/20/2012] [Revised: 06/25/2012] [Accepted: 06/30/2012] [Indexed: 01/12/2023]
Abstract
Substantial evidence suggests that transient production of reactive oxygen species (ROS) such as hydrogen peroxide (H(2)O(2)) is an important signaling event triggered by the activation of various cell surface receptors. Major targets of H(2)O(2) include protein tyrosine phosphatases (PTPs). Oxidation of the active site Cys by H(2)O(2) abrogates PTP catalytic activity, thereby potentially furnishing a mechanism to ensure optimal tyrosine phosphorylation in response to a variety of physiological stimuli. Unfortunately, H(2)O(2) is poorly reactive in chemical terms and the second order rate constants for the H(2)O(2)-mediated PTP inactivation are ~10M(-1)s(-1), which is too slow to be compatible with the transient signaling events occurring at the physiological concentrations of H(2)O(2). We find that hydroxyl radical is produced from H(2)O(2) solutions in the absence of metal chelating agent by the Fenton reaction. We show that the hydroxyl radical is capable of inactivating the PTPs and the inactivation is active site directed, through oxidation of the catalytic Cys to sulfenic acid, which can be reduced by low molecular weight thiols. We also show that hydroxyl radical is a kinetically more efficient oxidant than H(2)O(2) for inactivating the PTPs. The second-order rate constants for the hydroxyl radical-mediated PTP inactivation are at least 2-3 orders of magnitude higher than those mediated by H(2)O(2) under the same conditions. Thus, hydroxyl radical generated in vivo may serve as a more physiologically relevant oxidizing agent for PTP inactivation. This article is part of a Special Issue entitled: Chemistry and mechanism of phosphatases, diesterases and triesterases.
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Affiliation(s)
- Fan-Guo Meng
- Department of Biochemistry and Molecular Biology, Indiana University School of Medicine, 635 Barnhill Drive, Indianapolis, IN 46202, USA
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Stoyanovsky DA, Huang Z, Jiang J, Belikova NA, Tyurin V, Epperly MW, Greenberger JS, Bayir H, Kagan VE. A manganese-porphyrin complex decomposes H(2)O(2), inhibits apoptosis, and acts as a radiation mitigator in vivo. ACS Med Chem Lett 2011; 2:814-817. [PMID: 22247787 DOI: 10.1021/ml200142x] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
Ionizing radiation triggers mitochondrial overproduction of H(2)O(2) with concomitant induction of intrinsic apoptosis, whereby clearance of H(2)O(2) upon overexpression of mitochondrial catalase increases radioresistance in vitro and in vivo. As an alternative to gene therapy, we tested the potential of Mn((III))-porphyrin complexes to clear mitochondrial H(2)O(2). We report that triphenyl-[(2E)-2-[4-[(1Z,4Z,9Z,15Z)-10,15,20-tris(4-aminophenyl)-21,23-dihydroporphyrin-5-yl]phenyl]iminoethyl]phosphonium-Mn((III)) compartmentalizes preferentially into mitochondria of mouse embryonic cells, reacts with H(2)O(2), impedes γ-ray-induced mitochondrial apoptosis, and increases the survival of mice exposed to whole body irradiation with γ-rays.
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Affiliation(s)
- Detcho A. Stoyanovsky
- Departments of †Environmental and Occupational Health, ‡Critical Care Medicine, and §Radiation Oncology, University of Pittsburgh, Pittsburgh, Pennsylvania 15260
| | - Zhentai Huang
- Departments of †Environmental and Occupational Health, ‡Critical Care Medicine, and §Radiation Oncology, University of Pittsburgh, Pittsburgh, Pennsylvania 15260
| | - Jianfei Jiang
- Departments of †Environmental and Occupational Health, ‡Critical Care Medicine, and §Radiation Oncology, University of Pittsburgh, Pittsburgh, Pennsylvania 15260
| | - Natalia A. Belikova
- Departments of †Environmental and Occupational Health, ‡Critical Care Medicine, and §Radiation Oncology, University of Pittsburgh, Pittsburgh, Pennsylvania 15260
| | - Vladimir Tyurin
- Departments of †Environmental and Occupational Health, ‡Critical Care Medicine, and §Radiation Oncology, University of Pittsburgh, Pittsburgh, Pennsylvania 15260
| | - Michael W. Epperly
- Departments of †Environmental and Occupational Health, ‡Critical Care Medicine, and §Radiation Oncology, University of Pittsburgh, Pittsburgh, Pennsylvania 15260
| | - Joel S. Greenberger
- Departments of †Environmental and Occupational Health, ‡Critical Care Medicine, and §Radiation Oncology, University of Pittsburgh, Pittsburgh, Pennsylvania 15260
| | - Hülya Bayir
- Departments of †Environmental and Occupational Health, ‡Critical Care Medicine, and §Radiation Oncology, University of Pittsburgh, Pittsburgh, Pennsylvania 15260
| | - Valerian E. Kagan
- Departments of †Environmental and Occupational Health, ‡Critical Care Medicine, and §Radiation Oncology, University of Pittsburgh, Pittsburgh, Pennsylvania 15260
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Fehling C, Friedrichs G. Dimerization of HNO in Aqueous Solution: An Interplay of Solvation Effects, Fast Acid–Base Equilibria, and Intramolecular Hydrogen Bonding? J Am Chem Soc 2011; 133:17912-22. [DOI: 10.1021/ja2075949] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- Carsten Fehling
- Institut für Physikalische Chemie, Christian-Albrechts-Universität zu Kiel, Olshausenstraße 40, 24098 Kiel, Germany
| | - Gernot Friedrichs
- Institut für Physikalische Chemie, Christian-Albrechts-Universität zu Kiel, Olshausenstraße 40, 24098 Kiel, Germany
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Reisz JA, Bechtold E, King SB. Oxidative heme protein-mediated nitroxyl (HNO) generation. Dalton Trans 2010; 39:5203-12. [DOI: 10.1039/c000980f] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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Kohr MJ, Kaludercic N, Tocchetti CG, Dong Gao W, Kass DA, Janssen PML, Paolocci N, Ziolo MT. Nitroxyl enhances myocyte Ca2+ transients by exclusively targeting SR Ca2+-cycling. Front Biosci (Elite Ed) 2010; 2:614-26. [PMID: 20036906 DOI: 10.2741/e118] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Nitroxyl (HNO), the 1-electron reduction product of nitric oxide, improves myocardial contraction in normal and failing hearts. Here we test whether the HNO donor Angeli's salt (AS) will change myocyte action potential (AP) waveform by altering the L-type Ca2+ current (ICa) and contrast the contractile effects of HNO with that of the hydroxyl radical (.OH) and nitrite (NO2-), two potential breakdown products of AS. We confirmed the positive effect of AS/HNO on basal cardiomyocyte function, as opposed to the detrimental effect of .OH and the negligible effect of NO2-. Upon examination of the myocyte AP, we observed no change in resting membrane potential or AP duration to 20 per cent repolarization with AS/HNO, whereas AP duration to 90 per cent repolarization was slightly prolonged. However, perfusion with AS/HNO did not elicit a change in basal ICa, but did hasten ICa inactivation. Upon further examination of the SR, the AS/HNO-induced increase in cardiomyocyte Ca2+ transients was abolished with inhibition of SR Ca2+-cycling. Therefore, the HNO-induced increase in Ca2+ transients results exclusively from changes in SR Ca2+-cycling, and not from ICa.
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Affiliation(s)
- Mark J Kohr
- Department of Physiology and Cell Biology, Davis Heart and Lung Research Institute, The Ohio State University, Columbus, OH 43210, USA
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Irvine JC, Ritchie RH, Favaloro JL, Andrews KL, Widdop RE, Kemp-Harper BK. Nitroxyl (HNO): the Cinderella of the nitric oxide story. Trends Pharmacol Sci 2008; 29:601-8. [PMID: 18835046 DOI: 10.1016/j.tips.2008.08.005] [Citation(s) in RCA: 210] [Impact Index Per Article: 13.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2008] [Revised: 08/10/2008] [Accepted: 08/11/2008] [Indexed: 12/22/2022]
Abstract
Until recently, most of the biological effects of nitric oxide (NO) have been attributed to its uncharged state (NO*), yet NO can also exist in the reduced state as nitroxyl (HNO or NO(-)). Putatively generated from both NO synthase (NOS)-dependent and -independent sources, HNO is rapidly emerging as a novel entity with distinct pharmacology and therapeutic advantages over its redox sibling, NO*. Thus, unlike NO*, HNO can target cardiac sarcoplasmic ryanodine receptors to increase myocardial contractility, can interact directly with thiols and is resistant to both scavenging by superoxide (*O2-) and tolerance development. HNO donors are protective in the setting of heart failure in which NO donors have minimal impact. Here, we discuss the unique pharmacology of HNO versus NO* and highlight the therapeutic potential of HNO donors in the treatment of cardiovascular disease.
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Affiliation(s)
- Jennifer C Irvine
- Department of Pharmacology, Monash University, Clayton, VIC, Australia
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13
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Fukuto JM, Jackson MI, Kaludercic N, Paolocci N. Examining Nitroxyl in Biological Systems. Methods Enzymol 2008; 440:411-31. [DOI: 10.1016/s0076-6879(07)00826-9] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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14
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Sengupta R, Ryter SW, Zuckerbraun BS, Tzeng E, Billiar TR, Stoyanovsky DA. Thioredoxin catalyzes the denitrosation of low-molecular mass and protein S-nitrosothiols. Biochemistry 2007; 46:8472-83. [PMID: 17580965 DOI: 10.1021/bi700449x] [Citation(s) in RCA: 99] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
While most proteins have critical thiols whose oxidation affects their activity, it has been suggested that S-nitrosation and denitrosation of cellular thiols are fundamental processes similar to protein phosphorylation and dephosphorylation, respectively. However, understanding the biosynthesis and catabolism of S-nitrosothiols has proven to be difficult, in part because of the low stability of this class of metabolites. Herein, we report that thioredoxin catalyzes the denitrosation of a series of S-nitrosoamino acids and S-nitrosoproteins derived from HepG2 cells. Notably, all S-nitrosoproteins with a molecular mass of 23-30 kDa were catabolized by thioredoxin. Experimental evidence is presented which shows that both glutathione and reduced human thioredoxin denitrosate S-nitrosothioredoxin, which has been suggested to act as an anti-apoptotic factor via trans-S-nitrosation of caspase 3. In HepG2 cells, we observed that S-nitrosocysteine ethyl ester impedes the activity of caspase 3. However, a subsequent incubation of the cells in nitrosothiol-free medium resulted in reconstitution of the enzymatic activity, most likely due to endogenous denitrosation of S-nitrosocaspase 3. The latter process was markedly inhibited in thioredoxin reductase-deficient HepG2 cells, suggesting that the thioredoxin/thioredoxin reductase system tends to maintain intracellular caspase 3 in a reduced, SH state. The data obtained are discussed within the general reaction mechanisms encompassing the cellular homeostasis of S-nitrosothiols.
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Affiliation(s)
- Rajib Sengupta
- Department of Surgery, The University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania 15213, USA
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Paolocci N, Jackson MI, Lopez BE, Tocchetti CG, Wink DA, Hobbs A, Fukuto JM. The pharmacology of nitroxyl (HNO) and its therapeutic potential: not just the Janus face of NO. Pharmacol Ther 2007; 113:442-58. [PMID: 17222913 PMCID: PMC3501193 DOI: 10.1016/j.pharmthera.2006.11.002] [Citation(s) in RCA: 198] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2006] [Accepted: 11/10/2006] [Indexed: 11/29/2022]
Abstract
Nitroxyl (HNO), the 1-electron reduced and protonated congener of nitric oxide (NO), has received recent attention as a potential pharmacological agent for the treatment of heart failure and as a preconditioning agent for the mitigation of ischemia-reperfusion injury. Interest in the pharmacology and biology of HNO has prompted examination, or in some instances reexamination, of many of its chemical properties. Such studies have provided insight into the chemical basis for the biological effects of HNO, although the biochemical mechanisms for many of these effects remain to be established. In this review, a brief description of the biologically relevant chemistry of HNO is given, followed by a more detailed discussion of the pharmacology and potential toxicology of HNO.
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Affiliation(s)
- Nazareno Paolocci
- Division of Cardiology, Department of Medicine, Johns Hopkins Medical Institutions, Baltimore, MD 21287
| | - Matthew I. Jackson
- Interdepartmental Program in Molecular Toxicology, UCLA School of Public Health, Los Angeles, CA, 90095-1772
| | - Brenda E. Lopez
- Department of Pharmacology, UCLA School of Medicine, Center for the Health Sciences, Los Angeles, CA 90095-1735
| | - Carlo G. Tocchetti
- Division of Cardiology, Department of Medicine, Johns Hopkins Medical Institutions, Baltimore, MD 21287
| | - David A. Wink
- Radiation Biology Branch, National Cancer Institute Bethesda, MD 20892
| | - Adrian Hobbs
- Wolfson Institute for Biomedical Research, University College, Cruciform Building, Gower Street, London, WC1E 6AE, UK
| | - Jon M. Fukuto
- Interdepartmental Program in Molecular Toxicology, UCLA School of Public Health, Los Angeles, CA, 90095-1772
- Department of Pharmacology, UCLA School of Medicine, Center for the Health Sciences, Los Angeles, CA 90095-1735
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Stoyanovsky DA, Tyurina YY, Tyurin VA, Anand D, Mandavia DN, Gius D, Ivanova J, Pitt B, Billiar TR, Kagan VE. Thioredoxin and lipoic acid catalyze the denitrosation of low molecular weight and protein S-nitrosothiols. J Am Chem Soc 2006; 127:15815-23. [PMID: 16277524 DOI: 10.1021/ja0529135] [Citation(s) in RCA: 130] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The nitrosation of cellular thiols has attracted much interest as a regulatory mechanism that mediates some of the pathophysiological effects of nitric oxide (NO). In cells, virtually all enzymes contain cysteine residues that can be subjected to S-nitrosation, whereby this process often acts as an activity switch. Nitrosation of biological thiols is believed to be mediated by N2O3, metal-nitrosyl complexes, and peroxynitrite. To date, however, enzymatic pathways for S-denitrosation of proteins have not been identified. Herein, we present experimental evidence that two ubiquitous cellular dithiols, thioredoxin and dihydrolipoic acid, catalyze the denitrosation of S-nitrosoglutathione, S-nitrosocaspase 3, S-nitrosoalbumin, and S-nitrosometallothionenin to their reduced state with concomitant generation of nitroxyl (HNO), the one-electron reduction product of NO. In these reactions, formation of NO and HNO was assessed by ESR spectrometry, potentiometric measurements, and quantification of hydroxylamine and sodium nitrite as end reaction products. Nitrosation and denitrosation of caspase 3 was correlated with its proteolytic activity. We also report that thioredoxin-deficient HeLa cells with mutated thioredoxin reductase denitrosate S-nitrosothiols less efficiently. We conclude that both thioredoxin and dihydrolipoic acid may be involved in the regulation of cellular S-nitrosothiols.
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Affiliation(s)
- Detcho A Stoyanovsky
- Department of Surgery, University of Pittsburgh, Pittsburgh, Pennsylvania 15213, USA.
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Fukuto JM, Bartberger MD, Dutton AS, Paolocci N, Wink DA, Houk KN. The physiological chemistry and biological activity of nitroxyl (HNO): the neglected, misunderstood, and enigmatic nitrogen oxide. Chem Res Toxicol 2005; 18:790-801. [PMID: 15892572 DOI: 10.1021/tx0496800] [Citation(s) in RCA: 136] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jon M Fukuto
- Interdepartmental Program in Molecular Toxicology, UCLA School of Public Health, Los Angeles, California 90095-1772, USA
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18
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Fukuto JM, Dutton AS, Houk KN. The chemistry and biology of nitroxyl (HNO): a chemically unique species with novel and important biological activity. Chembiochem 2005; 6:612-9. [PMID: 15619720 DOI: 10.1002/cbic.200400271] [Citation(s) in RCA: 83] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Jon M Fukuto
- Department of Pharmacology, UCLA School of Medicine, CHS, Los Angeles, CA 90095-1735, USA.
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Cheong E, Tumbev V, Abramson J, Salama G, Stoyanovsky DA. Nitroxyl triggers Ca2+ release from skeletal and cardiac sarcoplasmic reticulum by oxidizing ryanodine receptors. Cell Calcium 2005; 37:87-96. [PMID: 15541467 DOI: 10.1016/j.ceca.2004.07.001] [Citation(s) in RCA: 91] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2004] [Revised: 07/08/2004] [Accepted: 07/13/2004] [Indexed: 11/21/2022]
Abstract
The biological activity of nitric oxide (NO) and NO-donors has been extensively investigated yet few studies have examined those of nitroxyl (HNO) species even though both exist in chemical equilibrium but oxidize thiols by different reaction mechanisms: S-nitrosation versus disulfide bond formation. Here, sodium trioxodinitrate (Na2N2O3; Angeli's salt; ANGS) was used as an HNO donor to investigate its effects on skeletal (RyR1) and cardiac (RyR2) ryanodine receptors. At steady-state concentrations of nanomoles/L, HNO induced a rapid Ca2+ release from sarcoplasmic reticulum (SR) vesicles then the reducing agent dithiothreitol (DTT) reversed the oxidation by HNO resulting in Ca2+ re-uptake by SR vesicles. With RyR1 channel proteins reconstituted in planar bilayers, HNO added to the cis-side increased the open probability (Po) from 0.056+/-0.026 to 0.270+/-0.102 (P<0.005, n=4) then DTT (3 mM) reduced Po to 0.096+/-0.040 (P<0.01, n=4). In parallel experiments, the time course of HNO production from ANGS was monitored by EPR and UV spectroscopy and compared with the rate of SR Ca2+ release indicating that picomolar concentrations of HNO triggered SR Ca2+ release. Controls showed that the hydroxyl radical scavenger, phenol did not alter ANGS-induced SR Ca2+ release, indicating that hydroxyl radical production from ANGS did not account for Ca2+ release from the SR. The findings indicate that HNO is a more potent activator of RyR1 than NO and that HNO activation of RyRs may contribute to NO's activation of RyRs and to the therapeutic effects of HNO-releasing prodrugs in heart failure.
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Affiliation(s)
- Eunji Cheong
- Department of Cell Biology and Physiology, School of Medicine, University of Pittsburgh, Pittsburgh, PA 15213, USA
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Shiva S, Crawford JH, Ramachandran A, Ceaser EK, Hillson T, Brookes PS, Patel RP, Darley-Usmar VM. Mechanisms of the interaction of nitroxyl with mitochondria. Biochem J 2004; 379:359-66. [PMID: 14723605 PMCID: PMC1224084 DOI: 10.1042/bj20031758] [Citation(s) in RCA: 64] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2003] [Revised: 12/15/2003] [Accepted: 12/18/2003] [Indexed: 12/30/2022]
Abstract
It is now thought that NO* (nitric oxide) and its redox congeners may play a role in the physiological regulation of mitochondrial function. The inhibition of cytochrome c oxidase by NO* is characterized as being reversible and oxygen dependent. In contrast, peroxynitrite, the product of the reaction of NO* with superoxide, irreversibly inhibits several of the respiratory complexes. However, little is known about the effects of HNO (nitroxyl) on mitochondrial function. This is especially important, since HNO has been shown to be more cytotoxic than NO*, may potentially be generated in vivo, and elicits biological responses with some of the characteristics of NO and peroxynitrite. In the present study, we present evidence that isolated mitochondria, in the absence or presence of substrate, convert HNO into NO* by a process that is dependent on mitochondrial concentration as well as the concentration of the HNO donor Angeli's salt. In addition, HNO is able to inhibit mitochondrial respiration through the inhibition of complexes I and II, most probably via modification of specific cysteine residues in the proteins. Using a proteomics approach, extensive modification of mitochondrial protein thiols was demonstrated. From these data it is evident that HNO interacts with mitochondria through mechanisms distinct from those of either NO* or peroxynitrite, including the generation of NO*, the modification of thiols and the inhibition of complexes I and II.
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Affiliation(s)
- Sruti Shiva
- Department of Pathology, University of Alabama at Birmingham, Birmingham, AL 35294, USA
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Li Z, Bu Y, Ai H. Water-Assisting Proton Transfer Isomerization of the HNO/HON System in the Singlet State: On the Number of the Effective Water Molecules. J Phys Chem B 2004. [DOI: 10.1021/jp049636t] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Zhiqiang Li
- Institute of Theoretical Chemistry, Shandong University, Jinan, 250100, P.R. China, and School of Chemistry, Qufu Normal University, Qufu, 273165, P.R. China
| | - Yuxiang Bu
- Institute of Theoretical Chemistry, Shandong University, Jinan, 250100, P.R. China, and School of Chemistry, Qufu Normal University, Qufu, 273165, P.R. China
| | - Hongqi Ai
- Institute of Theoretical Chemistry, Shandong University, Jinan, 250100, P.R. China, and School of Chemistry, Qufu Normal University, Qufu, 273165, P.R. China
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Poskrebyshev GA, Shafirovich V, Lymar SV. Hyponitrite radical, a stable adduct of nitric oxide and nitroxyl. J Am Chem Soc 2004; 126:891-9. [PMID: 14733565 DOI: 10.1021/ja038042l] [Citation(s) in RCA: 53] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
All major properties of the aqueous hyponitrite radicals (ONNO- and ONNOH), the adducts of nitric oxide (NO) and nitroxyl (3NO- and 1HNO), are revised. In this work, the radicals are produced by oxidation of various hyponitrite species in the 2-14 pH range with the OH, N3, or SO4- radicals. The estimated rate constants with OH are 4 x 10(7), 4.2 x 10(9), and 8.8 x 10(9) M(-1) s(-1) for oxidations of HONNOH, HONNO-, and ONNO2-, respectively. The rate constants for N3 + ONNO2- and SO4- + HONNO- are 1.1 x 10(9) and 6.4 x 10(8) M(-1) s(-1), respectively. The ONNO- radical exhibits a strong characteristic absorption spectrum with maxima at 280 and 420 nm (epsilon280 = 7.6 x 10(3) and epsilon420 = 1.2 x 10(3) M(-1) cm(-1)). This spectrum differs drastically from those reported, suggesting the radical misassignment in prior work. The ONNOH radical is weakly acidic; its pKa of 5.5 is obtained from the spectral changes with pH. Both ONNO- and ONNOH are shown to be over 3 orders of magnitude more stable with respect to elimination of NO than it has been suggested previously. The aqueous thermodynamic properties of ONNO- and ONNOH radicals are derived by means of the gas-phase ab initio calculations, justified estimates for ONNOH hydration, and its pKa. The radicals are found to be both strongly oxidizing, E degrees (ONNO-/ONNO2-) = 0.96 V and E degrees (ONNOH, H+/HONNOH) = 1.75 V, and moderately reducing, E degrees (2NO/ONNO-) = -0.38 V and E degrees (2NO, H+/ONNOH) = -0.06 V, all vs NHE. Collectively, these properties make the hyponitrite radical an important intermediate in the aqueous redox chemistry leading to or originating from nitric oxide.
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