1
|
Meng Z, Zhang Z, Zhao J, Liu C, Yao P, Zhang L, Xie D, Lau WB, Tsukuda J, Christopher TA, Lopez B, Zhu D, Liu D, Zhang JR, Gao E, Ischiropoulos H, Koch W, Ma X, Wang Y. Nitrative Modification of Caveolin-3: A Novel Mechanism of Cardiac Insulin Resistance and a Potential Therapeutic Target Against Ischemic Heart Failure in Prediabetic Animals. Circulation 2023; 147:1162-1179. [PMID: 36883479 PMCID: PMC10085855 DOI: 10.1161/circulationaha.122.063073] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/02/2022] [Accepted: 02/07/2023] [Indexed: 03/09/2023]
Abstract
BACKGROUND Myocardial insulin resistance is a hallmark of diabetic cardiac injury. However, the underlying molecular mechanisms remain unclear. Recent studies demonstrate that the diabetic heart is resistant to other cardioprotective interventions, including adiponectin and preconditioning. The "universal" resistance to multiple therapeutic interventions suggests impairment of the requisite molecule(s) involved in broad prosurvival signaling cascades. Cav (Caveolin) is a scaffolding protein coordinating transmembrane signaling transduction. However, the role of Cav3 in diabetic impairment of cardiac protective signaling and diabetic ischemic heart failure is unknown. METHODS Wild-type and gene-manipulated mice were fed a normal diet or high-fat diet for 2 to 12 weeks and subjected to myocardial ischemia and reperfusion. Insulin cardioprotection was determined. RESULTS Compared with the normal diet group, the cardioprotective effect of insulin was significantly blunted as early as 4 weeks of high-fat diet feeding (prediabetes), a time point where expression levels of insulin-signaling molecules remained unchanged. However, Cav3/insulin receptor-β complex formation was significantly reduced. Among multiple posttranslational modifications altering protein/protein interaction, Cav3 (not insulin receptor-β) tyrosine nitration is prominent in the prediabetic heart. Treatment of cardiomyocytes with 5-amino-3-(4-morpholinyl)-1,2,3-oxadiazolium chloride reduced the signalsome complex and blocked insulin transmembrane signaling. Mass spectrometry identified Tyr73 as the Cav3 nitration site. Phenylalanine substitution of Tyr73 (Cav3Y73F) abolished 5-amino-3-(4-morpholinyl)-1,2,3-oxadiazolium chloride-induced Cav3 nitration, restored Cav3/insulin receptor-β complex, and rescued insulin transmembrane signaling. It is most important that adeno-associated virus 9-mediated cardiomyocyte-specific Cav3Y73F reexpression blocked high-fat diet-induced Cav3 nitration, preserved Cav3 signalsome integrity, restored transmembrane signaling, and rescued insulin-protective action against ischemic heart failure. Last, diabetic nitrative modification of Cav3 at Tyr73 also reduced Cav3/AdipoR1 complex formation and blocked adiponectin cardioprotective signaling. CONCLUSIONS Nitration of Cav3 at Tyr73 and resultant signal complex dissociation results in cardiac insulin/adiponectin resistance in the prediabetic heart, contributing to ischemic heart failure progression. Early interventions preserving Cav3-centered signalsome integrity is an effective novel strategy against diabetic exacerbation of ischemic heart failure.
Collapse
Affiliation(s)
- Zhijun Meng
- Department of Emergency Medicine, Thomas Jefferson University, Philadelphia, PA 19107
| | - Zhen Zhang
- Department of Emergency Medicine, Thomas Jefferson University, Philadelphia, PA 19107
| | - Jianli Zhao
- Department of Biomedical Engineering, the University of Alabama at Birmingham, AL 35005
| | - Caihong Liu
- Department of Emergency Medicine, Thomas Jefferson University, Philadelphia, PA 19107
| | - Peng Yao
- Department of Emergency Medicine, Thomas Jefferson University, Philadelphia, PA 19107
| | - Ling Zhang
- Department of Emergency Medicine, Thomas Jefferson University, Philadelphia, PA 19107
| | - Dina Xie
- Department of Emergency Medicine, Thomas Jefferson University, Philadelphia, PA 19107
| | - Wayne Bond Lau
- Department of Emergency Medicine, Thomas Jefferson University, Philadelphia, PA 19107
| | - Jumpei Tsukuda
- Department of Emergency Medicine, Thomas Jefferson University, Philadelphia, PA 19107
| | | | - Bernard Lopez
- Department of Emergency Medicine, Thomas Jefferson University, Philadelphia, PA 19107
| | - Di Zhu
- Department of Emergency Medicine, Thomas Jefferson University, Philadelphia, PA 19107
| | - Demin Liu
- Department of Emergency Medicine, Thomas Jefferson University, Philadelphia, PA 19107
| | - John Ry Zhang
- Department of Emergency Medicine, Thomas Jefferson University, Philadelphia, PA 19107
| | - Erhe Gao
- Center for Translational Medicine, Lewis Katz School of Medicine at Temple University, Philadelphia, PA 19140
| | - Harry Ischiropoulos
- Children’s Hospital of Philadelphia Research Institute, Philadelphia, PA 19104
| | - Walter Koch
- Center for Translational Medicine, Lewis Katz School of Medicine at Temple University, Philadelphia, PA 19140
| | - Xinliang Ma
- Department of Emergency Medicine, Thomas Jefferson University, Philadelphia, PA 19107
| | - Yajing Wang
- Department of Emergency Medicine, Thomas Jefferson University, Philadelphia, PA 19107
- Department of Biomedical Engineering, the University of Alabama at Birmingham, AL 35005
| |
Collapse
|
2
|
Maslov LN, Naryzhnaya NV, Sementsov AS, Derkachev IA, Gusakova SV, Sarybaev A. Role of Nitric Oxide Synthase in the Infarct-Limiting Effect of Normobaric Hypoxia. J EVOL BIOCHEM PHYS+ 2022. [DOI: 10.1134/s0022093022040202] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
|
3
|
Lima MF, Amaral AG, Moretto IA, Paiva-Silva FJTN, Pereira FOB, Barbas C, dos Santos AM, Simionato AVC, Rupérez FJ. Untargeted Metabolomics Studies of H9c2 Cardiac Cells Submitted to Oxidative Stress, β-Adrenergic Stimulation and Doxorubicin Treatment: Investigation of Cardiac Biomarkers. Front Mol Biosci 2022; 9:898742. [PMID: 35847971 PMCID: PMC9277393 DOI: 10.3389/fmolb.2022.898742] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2022] [Accepted: 05/26/2022] [Indexed: 11/13/2022] Open
Abstract
One of the biggest challenges in the search for more effective treatments for diseases is understanding their etiology. Cardiovascular diseases (CVD) are an important example of this, given the high number of deaths annually. Oxidative stress (the imbalance between oxidant and antioxidant species in biological system) is one of the factors responsible for CVD occurrence, demanding extensive investigation. Excess of reactive oxygen species (ROS) are primarily responsible for this condition, and clinical and scientific literature have reported a significant increase in ROS when therapeutic drugs, such as doxorubicin and isoproterenol, are administered. In this context, the aim of this study is the investigation of potential biomarkers that might be associated with oxidative stress in cardiomyocytes. For this purpose, H9c2 cardiomyocytes were submitted to oxidative stress conditions by treatment with doxorubicin (DOX), isoproterenol (ISO) and hydrogen peroxide (PER). Metabolomics analyses of the cell extract and the supernatant obtained from the culture medium were then evaluated by CE-ESI(+)-TOF-MS. Following signal processing, statistical analyses, and molecular features annotations, the results indicate changes in the aspartate, serine, pantothenic acid, glycerophosphocholine and glutathione metabolism in the cell extract.
Collapse
Affiliation(s)
- Monica Força Lima
- Center for Metabolomics and Bioanalysis (CEMBIO), Facultad de Farmacia, Universidad San Pablo-CEU, CEU Universities, Madrid, Spain
- Department of Analytical Chemistry, Institute of Chemistry, University of Campinas (UNICAMP), Campinas, Brazil
| | - Alan Gonçalves Amaral
- Department of Analytical Chemistry, Institute of Chemistry, University of Campinas (UNICAMP), Campinas, Brazil
| | - Isabela Aparecida Moretto
- Department of Structural and Functional Biology, Institute of Biology, University of Campinas (UNICAMP), Campinas, Brazil
| | | | - Flávia Oliveira Borges Pereira
- Department of Structural and Functional Biology, Institute of Biology, University of Campinas (UNICAMP), Campinas, Brazil
| | - Coral Barbas
- Center for Metabolomics and Bioanalysis (CEMBIO), Facultad de Farmacia, Universidad San Pablo-CEU, CEU Universities, Madrid, Spain
| | - Aline Mara dos Santos
- Department of Structural and Functional Biology, Institute of Biology, University of Campinas (UNICAMP), Campinas, Brazil
- *Correspondence: Aline Mara dos Santos, ; Francisco Javier Rupérez,
| | - Ana Valéria Colnaghi Simionato
- Department of Analytical Chemistry, Institute of Chemistry, University of Campinas (UNICAMP), Campinas, Brazil
- National Institute of Science and Technology in Bioanalytics (INCTBio), Campinas, Brazil
| | - Francisco Javier Rupérez
- Center for Metabolomics and Bioanalysis (CEMBIO), Facultad de Farmacia, Universidad San Pablo-CEU, CEU Universities, Madrid, Spain
- *Correspondence: Aline Mara dos Santos, ; Francisco Javier Rupérez,
| |
Collapse
|
4
|
Zhao X, Yang X, An Z, Liu L, Yong J, Xing H, Huang R, Tian J, Song X. Pathophysiology and molecular mechanism of caveolin involved in myocardial protection strategies in ischemic conditioning. Biomed Pharmacother 2022; 153:113282. [PMID: 35750009 DOI: 10.1016/j.biopha.2022.113282] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2022] [Revised: 05/30/2022] [Accepted: 06/08/2022] [Indexed: 11/02/2022] Open
Abstract
Multiple pathophysiological pathways are activated during the process of myocardial injury. Various cardioprotective strategies protect the myocardium from ischemia, infarction, and ischemia/reperfusion (I/R) injury through different targets, yet the clinical translation remains limited. Caveolae and its structure protein, caveolins, have been suggested as a bridge to transmit damage-preventing signals and mediate the protection of ultrastructure in cardiomyocytes under pathological conditions. In this review, we first briefly introduce caveolae and caveolins. Then we review the cardioprotective strategies mediated by caveolins through various pathophysiological pathways. Finally, some possible research directions are proposed to provide future experiments and clinical translation perspectives targeting caveolin based on the investigative evidence.
Collapse
Affiliation(s)
- Xin Zhao
- Department of Cardiology, Beijing Anzhen Hospital, Capital Medical University, Beijing Institute of Heart, Lung and Blood Vessel Disease, 2 Anzhen Road, Beijing 100029, PR China
| | - Xueyao Yang
- Department of Cardiology, Beijing Anzhen Hospital, Capital Medical University, Beijing Institute of Heart, Lung and Blood Vessel Disease, 2 Anzhen Road, Beijing 100029, PR China
| | - Ziyu An
- Department of Cardiology, Beijing Anzhen Hospital, Capital Medical University, Beijing Institute of Heart, Lung and Blood Vessel Disease, 2 Anzhen Road, Beijing 100029, PR China
| | - Libo Liu
- Department of Cardiology, Beijing Anzhen Hospital, Capital Medical University, Beijing Institute of Heart, Lung and Blood Vessel Disease, 2 Anzhen Road, Beijing 100029, PR China
| | - Jingwen Yong
- Department of Cardiology, Beijing Anzhen Hospital, Capital Medical University, Beijing Institute of Heart, Lung and Blood Vessel Disease, 2 Anzhen Road, Beijing 100029, PR China
| | - Haoran Xing
- Department of Cardiology, Beijing Anzhen Hospital, Capital Medical University, Beijing Institute of Heart, Lung and Blood Vessel Disease, 2 Anzhen Road, Beijing 100029, PR China
| | - Rongchong Huang
- Department of Cardiology, Beijing Friendship Hospital, Capital Medical University, 95th Yong An Road, Xuan Wu District, Beijing 100050, PR China
| | - Jinfan Tian
- Department of Cardiology, Beijing Anzhen Hospital, Capital Medical University, Beijing Institute of Heart, Lung and Blood Vessel Disease, 2 Anzhen Road, Beijing 100029, PR China.
| | - Xiantao Song
- Department of Cardiology, Beijing Anzhen Hospital, Capital Medical University, Beijing Institute of Heart, Lung and Blood Vessel Disease, 2 Anzhen Road, Beijing 100029, PR China.
| |
Collapse
|
5
|
Boulghobra D, Dubois M, Alpha-Bazin B, Coste F, Olmos M, Gayrard S, Bornard I, Meyer G, Gaillard JC, Armengaud J, Reboul C. Increased protein S-nitrosylation in mitochondria: a key mechanism of exercise-induced cardioprotection. Basic Res Cardiol 2021; 116:66. [PMID: 34940922 DOI: 10.1007/s00395-021-00906-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/25/2021] [Revised: 12/16/2021] [Accepted: 12/17/2021] [Indexed: 12/13/2022]
Abstract
Endothelial nitric oxide synthase (eNOS) activation in the heart plays a key role in exercise-induced cardioprotection during ischemia-reperfusion, but the underlying mechanisms remain unknown. We hypothesized that the cardioprotective effect of exercise training could be explained by the re-localization of eNOS-dependent nitric oxide (NO)/S-nitrosylation signaling to mitochondria. By comparing exercised (5 days/week for 5 weeks) and sedentary Wistar rats, we found that exercise training increased eNOS level and activation by phosphorylation (at serine 1177) in mitochondria, but not in the cytosolic subfraction of cardiomyocytes. Using confocal microscopy, we confirmed that NO production in mitochondria was increased in response to H2O2 exposure in cardiomyocytes from exercised but not sedentary rats. Moreover, by S-nitrosoproteomic analysis, we identified several key S-nitrosylated proteins involved in mitochondrial function and cardioprotection. In agreement, we also observed that the increase in Ca2+ retention capacity by mitochondria isolated from the heart of exercised rats was abolished by exposure to the NOS inhibitor L-NAME or to the reducing agent ascorbate, known to denitrosylate proteins. Pre-incubation with ascorbate or L-NAME also increased mitochondrial reactive oxygen species production in cardiomyocytes from exercised but not from sedentary animals. We confirmed these results using isolated hearts perfused with L-NAME before ischemia-reperfusion. Altogether, these results strongly support the hypothesis that exercise training increases eNOS/NO/S-nitrosylation signaling in mitochondria, which might represent a key mechanism of exercise-induced cardioprotection.
Collapse
Affiliation(s)
| | | | - Béatrice Alpha-Bazin
- Université Paris-Saclay, CEA, INRAE, Département Médicaments et Technologies pour la Santé (DMTS), SPI, 30200, Bagnols-sur-Cèze, France
| | - Florence Coste
- LAPEC EA-4278, Avignon Université, 84000, Avignon, France
| | - Maxime Olmos
- LAPEC EA-4278, Avignon Université, 84000, Avignon, France
| | | | | | - Gregory Meyer
- LAPEC EA-4278, Avignon Université, 84000, Avignon, France
| | - Jean-Charles Gaillard
- Université Paris-Saclay, CEA, INRAE, Département Médicaments et Technologies pour la Santé (DMTS), SPI, 30200, Bagnols-sur-Cèze, France
| | - Jean Armengaud
- Université Paris-Saclay, CEA, INRAE, Département Médicaments et Technologies pour la Santé (DMTS), SPI, 30200, Bagnols-sur-Cèze, France
| | - Cyril Reboul
- LAPEC EA-4278, Avignon Université, 84000, Avignon, France. .,Cardiovascular Physiology Laboratory, UPR4278, UFR Sciences Technologies Santé, Centre INRAE-Site Agroparc, 228 route de l'Aérodrome, 84914, Avignon Cedex 9, France.
| |
Collapse
|
6
|
Yoon S, Eom GH, Kang G. Nitrosative Stress and Human Disease: Therapeutic Potential of Denitrosylation. Int J Mol Sci 2021; 22:ijms22189794. [PMID: 34575960 PMCID: PMC8464666 DOI: 10.3390/ijms22189794] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2021] [Revised: 09/06/2021] [Accepted: 09/07/2021] [Indexed: 01/22/2023] Open
Abstract
Proteins dynamically contribute towards maintaining cellular homeostasis. Posttranslational modification regulates the function of target proteins through their immediate activation, sudden inhibition, or permanent degradation. Among numerous protein modifications, protein nitrosation and its functional relevance have emerged. Nitrosation generally initiates nitric oxide (NO) production in association with NO synthase. NO is conjugated to free thiol in the cysteine side chain (S-nitrosylation) and is propagated via the transnitrosylation mechanism. S-nitrosylation is a signaling pathway frequently involved in physiologic regulation. NO forms peroxynitrite in excessive oxidation conditions and induces tyrosine nitration, which is quite stable and is considered irreversible. Two main reducing systems are attributed to denitrosylation: glutathione and thioredoxin (TRX). Glutathione captures NO from S-nitrosylated protein and forms S-nitrosoglutathione (GSNO). The intracellular reducing system catalyzes GSNO into GSH again. TRX can remove NO-like glutathione and break down the disulfide bridge. Although NO is usually beneficial in the basal context, cumulative stress from chronic inflammation or oxidative insult produces a large amount of NO, which induces atypical protein nitrosation. Herein, we (1) provide a brief introduction to the nitrosation and denitrosylation processes, (2) discuss nitrosation-associated human diseases, and (3) discuss a possible denitrosylation strategy and its therapeutic applications.
Collapse
Affiliation(s)
- Somy Yoon
- Department of Pharmacology, Chonnam National University Medical School, Hwasun 58128, Korea;
| | - Gwang Hyeon Eom
- Department of Pharmacology, Chonnam National University Medical School, Hwasun 58128, Korea;
- Correspondence: (G.-H.E.); (G.K.); Tel.: +82-61-379-2837 (G.-H.E.); +82-62-220-5262 (G.K.)
| | - Gaeun Kang
- Division of Clinical Pharmacology, Chonnam National University Hospital, Gwangju 61469, Korea
- Correspondence: (G.-H.E.); (G.K.); Tel.: +82-61-379-2837 (G.-H.E.); +82-62-220-5262 (G.K.)
| |
Collapse
|
7
|
Buelna-Chontal M, García-Niño WR, Silva-Palacios A, Enríquez-Cortina C, Zazueta C. Implications of Oxidative and Nitrosative Post-Translational Modifications in Therapeutic Strategies against Reperfusion Damage. Antioxidants (Basel) 2021; 10:749. [PMID: 34066806 PMCID: PMC8151040 DOI: 10.3390/antiox10050749] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2021] [Revised: 05/03/2021] [Accepted: 05/05/2021] [Indexed: 12/17/2022] Open
Abstract
Post-translational modifications based on redox reactions "switch on-off" the biological activity of different downstream targets, modifying a myriad of processes and providing an efficient mechanism for signaling regulation in physiological and pathological conditions. Such modifications depend on the generation of redox components, such as reactive oxygen species and nitric oxide. Therefore, as the oxidative or nitrosative milieu prevailing in the reperfused heart is determinant for protective signaling, in this review we defined the impact of redox-based post-translational modifications resulting from either oxidative/nitrosative signaling or oxidative/nitrosative stress that occurs during reperfusion damage. The role that cardioprotective conditioning strategies have had to establish that such changes occur at different subcellular levels, particularly in mitochondria, is also presented. Another section is devoted to the possible mechanism of signal delivering of modified proteins. Finally, we discuss the possible efficacy of redox-based therapeutic strategies against reperfusion damage.
Collapse
Affiliation(s)
| | | | | | | | - Cecilia Zazueta
- Department of Cardiovascular Biomedicine, National Institute of Cardiology Ignacio Chávez, Mexico City 14080, Mexico; (M.B.-C.); (W.R.G.-N.); (A.S.-P.); (C.E.-C.)
| |
Collapse
|
8
|
Nitric Oxide and S-Nitrosylation in Cardiac Regulation: G Protein-Coupled Receptor Kinase-2 and β-Arrestins as Targets. Int J Mol Sci 2021; 22:ijms22020521. [PMID: 33430208 PMCID: PMC7825736 DOI: 10.3390/ijms22020521] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2020] [Revised: 12/24/2020] [Accepted: 01/04/2021] [Indexed: 12/15/2022] Open
Abstract
Cardiac diseases including heart failure (HF), are the leading cause of morbidity and mortality globally. Among the prominent characteristics of HF is the loss of β-adrenoceptor (AR)-mediated inotropic reserve. This is primarily due to the derangements in myocardial regulatory signaling proteins, G protein-coupled receptor (GPCR) kinases (GRKs) and β-arrestins (β-Arr) that modulate β-AR signal termination via receptor desensitization and downregulation. GRK2 and β-Arr2 activities are elevated in the heart after injury/stress and participate in HF through receptor inactivation. These GPCR regulators are modulated profoundly by nitric oxide (NO) produced by NO synthase (NOS) enzymes through S-nitrosylation due to receptor-coupled NO generation. S-nitrosylation, which is NO-mediated modification of protein cysteine residues to generate an S-nitrosothiol (SNO), mediates many effects of NO independently from its canonical guanylyl cyclase/cGMP/protein kinase G signaling. Herein, we review the knowledge on the NO system in the heart and S-nitrosylation-dependent modifications of myocardial GPCR signaling components GRKs and β-Arrs.
Collapse
|
9
|
Post-Translational S-Nitrosylation of Proteins in Regulating Cardiac Oxidative Stress. Antioxidants (Basel) 2020; 9:antiox9111051. [PMID: 33126514 PMCID: PMC7693965 DOI: 10.3390/antiox9111051] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2020] [Revised: 10/23/2020] [Accepted: 10/26/2020] [Indexed: 02/07/2023] Open
Abstract
Like other post-translational modifications (PTMs) of proteins, S-nitrosylation has been considered a key regulatory mechanism of multiple cellular functions in many physiological and disease conditions. Emerging evidence has demonstrated that S-nitrosylation plays a crucial role in regulating redox homeostasis in the stressed heart, leading to discoveries in the mechanisms underlying the pathogenesis of heart diseases and cardiac protection. In this review, we summarize recent studies in understanding the molecular and biological basis of S-nitrosylation, including the formation, spatiotemporal specificity, homeostatic regulation, and association with cellular redox status. We also outline the currently available methods that have been applied to detect S-nitrosylation. Additionally, we synopsize the up-to-date studies of S-nitrosylation in various cardiac diseases in humans and animal models, and we discuss its therapeutic potential in cardiac protection. These pieces of information would bring new insights into understanding the role of S-nitrosylation in cardiac pathogenesis and provide novel avenues for developing novel therapeutic strategies for heart diseases.
Collapse
|
10
|
Boulghobra D, Coste F, Geny B, Reboul C. Exercise training protects the heart against ischemia-reperfusion injury: A central role for mitochondria? Free Radic Biol Med 2020; 152:395-410. [PMID: 32294509 DOI: 10.1016/j.freeradbiomed.2020.04.005] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/10/2020] [Revised: 04/01/2020] [Accepted: 04/07/2020] [Indexed: 12/11/2022]
Abstract
Ischemic heart disease is one of the main causes of morbidity and mortality worldwide. Physical exercise is an effective lifestyle intervention to reduce the risk factors for cardiovascular disease and also to improve cardiac function and survival in patients with ischemic heart disease. Among the strategies that contribute to reduce heart damages during ischemia and reperfusion, regular physical exercise is efficient both in rodent experimental models and in humans. However, the cellular and molecular mechanisms of the cardioprotective effects of exercise remain unclear. During ischemia and reperfusion, mitochondria are crucial players in cell death, but also in cell survival. Although exercise training can influence mitochondrial function, the consequences on heart sensitivity to ischemic insults remain elusive. In this review, we describe the effects of physical activity on cardiac mitochondria and their potential key role in exercise-induced cardioprotection against ischemia-reperfusion damage. Based on recent scientific data, we discuss the role of different pathways that might help to explain why mitochondria are a key target of exercise-induced cardioprotection.
Collapse
Affiliation(s)
| | - Florence Coste
- LAPEC EA4278, Avignon Université, F-84000, Avignon, France
| | - Bernard Geny
- EA3072, «Mitochondrie, Stress Oxydant, et Protection Musculaire», Université de Strasbourg, 67000, Strasbourg, France
| | - Cyril Reboul
- LAPEC EA4278, Avignon Université, F-84000, Avignon, France.
| |
Collapse
|
11
|
The caveolar-mitochondrial interface: regulation of cellular metabolism in physiology and pathophysiology. Biochem Soc Trans 2020; 48:165-177. [PMID: 32010944 DOI: 10.1042/bst20190388] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2019] [Revised: 01/09/2020] [Accepted: 01/10/2020] [Indexed: 12/15/2022]
Abstract
The plasma membrane is an important cellular organelle that is often overlooked in terms of a primary factor in regulating physiology and pathophysiology. There is emerging evidence to suggest that the plasma membrane serves a greater purpose than a simple barrier or transporter of ions. New paradigms suggest that the membrane serves as a critical bridge to connect extracellular to intracellular communication particularly to regulate energy and metabolism by forming physical and biochemical associations with intracellular organelles. This review will focus on the relationship of a particular membrane microdomain - caveolae - with mitochondria and the particular implication of this to physiology and pathophysiology.
Collapse
|
12
|
Casin KM, Kohr MJ. An emerging perspective on sex differences: Intersecting S-nitrosothiol and aldehyde signaling in the heart. Redox Biol 2020; 31:101441. [PMID: 32007450 PMCID: PMC7212482 DOI: 10.1016/j.redox.2020.101441] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2019] [Revised: 01/20/2020] [Accepted: 01/22/2020] [Indexed: 12/17/2022] Open
Abstract
Cardiovascular disease is the leading cause of the death for both men and women. Although baseline heart physiology and the response to disease are known to differ by sex, little is known about sex differences in baseline molecular signaling, especially with regard to redox biology. In this review, we describe current research on sex differences in cardiac redox biology with a focus on the regulation of nitric oxide and aldehyde signaling. Furthermore, we argue for a new perspective on cardiovascular sex differences research, one that focuses on baseline redox biology without the elimination or disruption of sex hormones.
Collapse
Affiliation(s)
- Kevin M Casin
- Department of Environmental Health and Engineering, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, 21205, USA
| | - Mark J Kohr
- Department of Environmental Health and Engineering, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, 21205, USA.
| |
Collapse
|
13
|
Sun J, Hao W, Fillmore N, Ma H, Springer D, Yu ZX, Sadowska A, Garcia A, Chen R, Muniz-Medina V, Rosenthal K, Lin J, Kuruvilla D, Osbourn J, Karathanasis SK, Walker J, Murphy E. Human Relaxin-2 Fusion Protein Treatment Prevents and Reverses Isoproterenol-Induced Hypertrophy and Fibrosis in Mouse Heart. J Am Heart Assoc 2019; 8:e013465. [PMID: 31818212 PMCID: PMC6951077 DOI: 10.1161/jaha.119.013465] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Background Heart failure is one of the leading causes of death in Western countries, and there is a need for new therapeutic approaches. Relaxin‐2 is a peptide hormone that mediates pleiotropic cardiovascular effects, including antifibrotic, angiogenic, vasodilatory, antiapoptotic, and anti‐inflammatory effects in vitro and in vivo. Methods and Results We developed RELAX10, a fusion protein composed of human relaxin‐2 hormone and the Fc of a human antibody, to test the hypothesis that extended exposure of the relaxin‐2 peptide could reduce cardiac hypertrophy and fibrosis. RELAX10 demonstrated the same specificity and similar in vitro activity as the relaxin‐2 peptide. The terminal half‐life of RELAX10 was 7 days in mouse and 3.75 days in rat after subcutaneous administration. We evaluated whether treatment with RELAX10 could prevent and reverse isoproterenol‐induced cardiac hypertrophy and fibrosis in mice. Isoproterenol administration in mice resulted in increased cardiac hypertrophy and fibrosis compared with vehicle. Coadministration with RELAX10 significantly attenuated the cardiac hypertrophy and fibrosis compared with untreated animals. Isoproterenol administration significantly increased transforming growth factor β1 (TGF‐β1)–induced fibrotic signaling, which was attenuated by RELAX10. We found that RELAX10 also significantly increased protein kinase B/endothelial NO synthase signaling and protein S‐nitrosylation. In the reversal study, RELAX10‐treated animals showed significantly reduced cardiac hypertrophy and collagen levels. Conclusions These findings support a potential role for RELAX10 in the treatment of heart failure.
Collapse
Affiliation(s)
- Junhui Sun
- Cardiac Physiology Section/Cardiovascular Branch National Heart, Lung, and Blood Institute/National Institutes of Health Bethesda MD
| | | | - Natasha Fillmore
- Cardiac Physiology Section/Cardiovascular Branch National Heart, Lung, and Blood Institute/National Institutes of Health Bethesda MD
| | - Hanley Ma
- Cardiac Physiology Section/Cardiovascular Branch National Heart, Lung, and Blood Institute/National Institutes of Health Bethesda MD
| | - Danielle Springer
- Murine Phenotyping Core National Heart, Lung, and Blood Institute/National Institutes of Health Bethesda MD
| | - Zu-Xi Yu
- Pathology Core National Heart, Lung, and Blood Institute/National Institutes of Health Bethesda MD
| | | | | | | | | | | | | | | | | | | | | | - Elizabeth Murphy
- Cardiac Physiology Section/Cardiovascular Branch National Heart, Lung, and Blood Institute/National Institutes of Health Bethesda MD
| |
Collapse
|
14
|
Casin KM, Fallica J, Mackowski N, Veenema RJ, Chan A, St Paul A, Zhu G, Bedja D, Biswal S, Kohr MJ. S-Nitrosoglutathione Reductase Is Essential for Protecting the Female Heart From Ischemia-Reperfusion Injury. Circ Res 2019; 123:1232-1243. [PMID: 30571462 DOI: 10.1161/circresaha.118.313956] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
RATIONALE Protein S-nitros(yl)ation (SNO) has been implicated as an essential mediator of nitric oxide-dependent cardioprotection. Compared with males, female hearts exhibit higher baseline levels of protein SNO and associated with this, reduced susceptibility to myocardial ischemia-reperfusion injury. Female hearts also exhibit enhanced S-nitrosoglutathione reductase (GSNO-R) activity, which would typically favor decreased SNO levels as GSNO-R mediates SNO catabolism. OBJECTIVE Because female hearts exhibit higher SNO levels, we hypothesized that GSNO-R is an essential component of sex-dependent cardioprotection in females. METHODS AND RESULTS Male and female wild-type mouse hearts were subjected to ex vivo ischemia-reperfusion injury with or without GSNO-R inhibition (N6022). Control female hearts exhibited enhanced functional recovery and decreased infarct size versus control males. Interestingly, GSNO-R inhibition reversed this sex disparity, significantly reducing injury in male hearts, and exacerbating injury in females. Similar results were obtained with male and female GSNO-R-/- hearts using ex vivo and in vivo models of ischemia-reperfusion injury. Assessment of SNO levels using SNO-resin assisted capture revealed an increase in total SNO levels with GSNO-R inhibition in males, whereas total SNO levels remained unchanged in females. However, we found that although GSNO-R inhibition significantly increased SNO at the cardioprotective Cys39 residue of nicotinamide adenine dinucleotide (NADH) dehydrogenase subunit 3 in males, SNO-NADH dehydrogenase subunit 3 levels were surprisingly reduced in N6022-treated female hearts. Because GSNO-R also acts as a formaldehyde dehydrogenase, we examined postischemic formaldehyde levels and found that they were nearly 2-fold higher in N6022-treated female hearts compared with nontreated hearts. Importantly, the mitochondrial aldehyde dehydrogenase 2 activator, Alda-1, rescued the phenotype in GSNO-R-/- female hearts, significantly reducing infarct size. CONCLUSIONS These striking findings point to GSNO-R as a critical sex-dependent mediator of myocardial protein SNO and formaldehyde levels and further suggest that different therapeutic strategies may be required to combat ischemic heart disease in males and females.
Collapse
Affiliation(s)
- Kevin M Casin
- From the Department of Environmental Health and Engineering, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD (K.M.C., J.F., N.M., R.J.V., A.C., A.S.P., S.B., M.J.K.)
| | - Jonathan Fallica
- From the Department of Environmental Health and Engineering, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD (K.M.C., J.F., N.M., R.J.V., A.C., A.S.P., S.B., M.J.K.)
| | - Nathan Mackowski
- From the Department of Environmental Health and Engineering, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD (K.M.C., J.F., N.M., R.J.V., A.C., A.S.P., S.B., M.J.K.)
| | - Ryne J Veenema
- From the Department of Environmental Health and Engineering, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD (K.M.C., J.F., N.M., R.J.V., A.C., A.S.P., S.B., M.J.K.)
| | - Ashley Chan
- From the Department of Environmental Health and Engineering, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD (K.M.C., J.F., N.M., R.J.V., A.C., A.S.P., S.B., M.J.K.)
| | - Amanda St Paul
- From the Department of Environmental Health and Engineering, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD (K.M.C., J.F., N.M., R.J.V., A.C., A.S.P., S.B., M.J.K.)
| | - Guangshuo Zhu
- Cardiology Division, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD (G.Z., D.B.)
| | - Djahida Bedja
- Cardiology Division, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD (G.Z., D.B.)
| | - Shyam Biswal
- From the Department of Environmental Health and Engineering, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD (K.M.C., J.F., N.M., R.J.V., A.C., A.S.P., S.B., M.J.K.)
| | - Mark J Kohr
- From the Department of Environmental Health and Engineering, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD (K.M.C., J.F., N.M., R.J.V., A.C., A.S.P., S.B., M.J.K.)
| |
Collapse
|
15
|
Shvedova M, Anfinogenova Y, Popov SV, Atochin DN. Connexins and Nitric Oxide Inside and Outside Mitochondria: Significance for Cardiac Protection and Adaptation. Front Physiol 2018; 9:479. [PMID: 29867537 PMCID: PMC5964197 DOI: 10.3389/fphys.2018.00479] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2017] [Accepted: 04/16/2018] [Indexed: 12/27/2022] Open
Abstract
Irreversible myocardial damage happens in the presence of prolonged and severe ischemia. Several phenomena protect the heart against myocardial infarction and other adverse outcomes of ischemia and reperfusion (IR), namely: hibernation related to stunned myocardium, ischemic preconditioning (IPC), ischemic post-conditioning, and their pharmacological surrogates. Ischemic preconditioning consists in the induction of a brief IR to reduce damage of the tissue caused by prolonged and severe ischemia. Nitric oxide (NO) signaling plays an essential role in IPC. Nitric oxide-sensitive guanylate cyclase/cyclic guanosine-3′,5′-monophosphate (cGMP)-dependent protein kinase type I-signaling pathway protects against the IR injury during myocardial infarction. Mitochondrial ATP-sensitive and Ca2+-activated K+ channels are involved in NO-mediated signaling in IPC. Independently of the cGMP-mediated induction of NO production, S-nitrosation represents a regulatory molecular mechanism similar to phosphorylation and is essential for IPC. Unlike conditioning phenomena, the mechanistic basis of myocardial stunning and hibernation remains poorly understood. In this review article, we hypothesize that the disruption of electrical syncytium of the myocardium may underly myocardial stunning and hibernation. Considering that the connexins are the building blocks of gap junctions which represent primary structural basis of electrical syncytium, we discuss data on the involvement of connexins into myocardial conditioning, stunning, and hibernation. We also show how NO-mediated signaling is involved in myocardial stunning and hibernation. Connexins represent an essential element of adaptation phenomena of the heart at the level of both the cardio- myocytes and the mitochondria. Nitric oxide targets mitochondrial connexins which may affect electrical syncytium continuum in the heart. Mitochondrial connexins may play an essential role in NO-dependent mechanisms of myocardial adaptation to ischemia.
Collapse
Affiliation(s)
- Maria Shvedova
- Cardiovascular Research Center and Cardiology Division, Massachusetts General Hospital, Harvard Medical School, Charlestown, MA, United States
| | - Yana Anfinogenova
- Cardiology Research Institute, Tomsk National Research Medical Center, Russian Academy of Sciences, Tomsk, Russia.,RASA Center, National Research Tomsk Polytechnic University, Tomsk, Russia
| | - Sergey V Popov
- Cardiology Research Institute, Tomsk National Research Medical Center, Russian Academy of Sciences, Tomsk, Russia
| | - Dmitriy N Atochin
- Cardiovascular Research Center and Cardiology Division, Massachusetts General Hospital, Harvard Medical School, Charlestown, MA, United States.,RASA Center, National Research Tomsk Polytechnic University, Tomsk, Russia
| |
Collapse
|
16
|
Burton RAB, Rog-Zielinska EA, Corbett AD, Peyronnet R, Bodi I, Fink M, Sheldon J, Hoenger A, Calaghan SC, Bub G, Kohl P. Caveolae in Rabbit Ventricular Myocytes: Distribution and Dynamic Diminution after Cell Isolation. Biophys J 2017; 113:1047-1059. [PMID: 28877488 PMCID: PMC5653872 DOI: 10.1016/j.bpj.2017.07.026] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2016] [Revised: 05/16/2017] [Accepted: 07/06/2017] [Indexed: 12/12/2022] Open
Abstract
Caveolae are signal transduction centers, yet their subcellular distribution and preservation in cardiac myocytes after cell isolation are not well documented. Here, we quantify caveolae located within 100 nm of the outer cell surface membrane in rabbit single-ventricular cardiomyocytes over 8 h post-isolation and relate this to the presence of caveolae in intact tissue. Hearts from New Zealand white rabbits were either chemically fixed by coronary perfusion or enzymatically digested to isolate ventricular myocytes, which were subsequently fixed at 0, 3, and 8 h post-isolation. In live cells, the patch-clamp technique was used to measure whole-cell plasma membrane capacitance, and in fixed cells, caveolae were quantified by transmission electron microscopy. Changes in cell-surface topology were assessed using scanning electron microscopy. In fixed ventricular myocardium, dual-axis electron tomography was used for three-dimensional reconstruction and analysis of caveolae in situ. The presence and distribution of surface-sarcolemmal caveolae in freshly isolated cells matches that of intact myocardium. With time, the number of surface-sarcolemmal caveolae decreases in isolated cardiomyocytes. This is associated with a gradual increase in whole-cell membrane capacitance. Concurrently, there is a significant increase in area, diameter, and circularity of sub-sarcolemmal mitochondria, indicative of swelling. In addition, electron tomography data from intact heart illustrate the regular presence of caveolae not only at the surface sarcolemma, but also on transverse-tubular membranes in ventricular myocardium. Thus, caveolae are dynamic structures, present both at surface-sarcolemmal and transverse-tubular membranes. After cell isolation, the number of surface-sarcolemmal caveolae decreases significantly within a time frame relevant for single-cell research. The concurrent increase in cell capacitance suggests that membrane incorporation of surface-sarcolemmal caveolae underlies this, but internalization and/or micro-vesicle loss to the extracellular space may also contribute. Given that much of the research into cardiac caveolae-dependent signaling utilizes isolated cells, and since caveolae-dependent pathways matter for a wide range of other study targets, analysis of isolated cell data should take the time post-isolation into account.
Collapse
Affiliation(s)
- Rebecca A B Burton
- Department of Pharmacology, University of Oxford, Oxford, United Kingdom
| | - Eva A Rog-Zielinska
- National Heart and Lung Institute, Imperial College London, London, United Kingdom; Institute for Experimental Cardiovascular Medicine, University Heart Center Freiburg-Bad Krozingen, Faculty of Medicine, University of Freiburg, Freiburg, Germany.
| | | | - Rémi Peyronnet
- Institute for Experimental Cardiovascular Medicine, University Heart Center Freiburg-Bad Krozingen, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Ilona Bodi
- Institute for Experimental Cardiovascular Medicine, University Heart Center Freiburg-Bad Krozingen, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Martin Fink
- Department of Physiology, Anatomy and Genetics, University of Oxford, Oxford, United Kingdom
| | - Judith Sheldon
- Department of Physiology, Anatomy and Genetics, University of Oxford, Oxford, United Kingdom
| | - Andreas Hoenger
- Department of Molecular, Cellular and Developmental Biology, University of Colorado, Boulder, Colorado
| | - Sarah C Calaghan
- School of Biomedical Sciences, University of Leeds, Leeds, United Kingdom
| | - Gil Bub
- Department of Physiology, Anatomy and Genetics, University of Oxford, Oxford, United Kingdom
| | - Peter Kohl
- Institute for Experimental Cardiovascular Medicine, University Heart Center Freiburg-Bad Krozingen, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| |
Collapse
|
17
|
Shao Q, Casin KM, Mackowski N, Murphy E, Steenbergen C, Kohr MJ. Adenosine A1 receptor activation increases myocardial protein S-nitrosothiols and elicits protection from ischemia-reperfusion injury in male and female hearts. PLoS One 2017; 12:e0177315. [PMID: 28493997 PMCID: PMC5426678 DOI: 10.1371/journal.pone.0177315] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2016] [Accepted: 04/25/2017] [Indexed: 11/18/2022] Open
Abstract
Nitric oxide (NO) plays an important role in cardioprotection, and recent work from our group and others has implicated protein S-nitrosylation (SNO) as a critical component of NO-mediated protection in different models, including ischemic pre- and post-conditioning and sex-dependent cardioprotection. However, studies have yet to examine whether protein SNO levels are similarly increased with pharmacologic preconditioning in male and female hearts, and whether an increase in protein SNO levels, which is protective in male hearts, is sufficient to increase baseline protection in female hearts. Therefore, we pharmacologically preconditioned male and female hearts with the adenosine A1 receptor agonist N6-cyclohexyl adenosine (CHA). CHA administration prior to ischemia significantly improved functional recovery in both male and female hearts compared to baseline in a Langendorff-perfused heart model of ischemia-reperfusion injury (% of preischemic function ± SE: male baseline: 37.5±3.4% vs. male CHA: 55.3±3.2%; female baseline: 61.4±5.7% vs. female CHA: 76.0±6.2%). In a separate set of hearts, we found that CHA increased p-Akt and p-eNOS levels. We also used SNO-resin-assisted capture with LC-MS/MS to identify SNO proteins in male and female hearts, and determined that CHA perfusion induced a modest increase in protein SNO levels in both male (11.4%) and female (12.3%) hearts compared to baseline. These findings support a potential role for protein SNO in a model of pharmacologic preconditioning, and provide evidence to suggest that a modest increase in protein SNO levels is sufficient to protect both male and female hearts from ischemic injury. In addition, a number of the SNO proteins identified with CHA treatment were also observed with other forms of cardioprotective stimuli in prior studies, further supporting a role for protein SNO in cardioprotection.
Collapse
Affiliation(s)
- Qin Shao
- Department of Cardiology, Renji Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
- Department of Pathology, School of Medicine, Johns Hopkins University, Baltimore, Maryland, United States of America
| | - Kevin M. Casin
- Department of Environmental Health and Engineering, Bloomberg School of Public Health, Whiting School of Engineering, Johns Hopkins University, Baltimore, Maryland, United States of America
| | - Nathan Mackowski
- Department of Environmental Health and Engineering, Bloomberg School of Public Health, Whiting School of Engineering, Johns Hopkins University, Baltimore, Maryland, United States of America
| | - Elizabeth Murphy
- Systems Biology Center, National Heart, Lung and Blood Institute, Bethesda, Maryland, United States of America
| | - Charles Steenbergen
- Department of Pathology, School of Medicine, Johns Hopkins University, Baltimore, Maryland, United States of America
| | - Mark J. Kohr
- Department of Pathology, School of Medicine, Johns Hopkins University, Baltimore, Maryland, United States of America
- Department of Environmental Health and Engineering, Bloomberg School of Public Health, Whiting School of Engineering, Johns Hopkins University, Baltimore, Maryland, United States of America
- * E-mail:
| |
Collapse
|
18
|
Glancy B, Hartnell LM, Combs CA, Femnou A, Sun J, Murphy E, Subramaniam S, Balaban RS. Power Grid Protection of the Muscle Mitochondrial Reticulum. Cell Rep 2017; 19:487-496. [PMID: 28423313 DOI: 10.1016/j.celrep.2017.03.063] [Citation(s) in RCA: 116] [Impact Index Per Article: 16.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2016] [Revised: 01/12/2017] [Accepted: 03/21/2017] [Indexed: 11/28/2022] Open
Abstract
Mitochondrial network connectivity enables rapid communication and distribution of potential energy throughout the cell. However, this connectivity puts the energy conversion system at risk, because damaged elements could jeopardize the entire network. Here, we demonstrate the mechanisms for mitochondrial network protection in heart and skeletal muscle (SKM). We find that the cardiac mitochondrial reticulum is segmented into subnetworks comprising many mitochondria linked through abundant contact sites at highly specific intermitochondrial junctions (IMJs). In both cardiac and SKM subnetworks, a rapid electrical and physical separation of malfunctioning mitochondria occurs, consistent with detachment of IMJs and retraction of elongated mitochondria into condensed structures. Regional mitochondrial subnetworks limit the cellular impact of local dysfunction while the dynamic disconnection of damaged mitochondria allows the remaining mitochondria to resume normal function within seconds. Thus, mitochondrial network security is comprised of both proactive and reactive mechanisms in striated muscle cells.
Collapse
Affiliation(s)
- Brian Glancy
- National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD 20892, USA.
| | - Lisa M Hartnell
- National Cancer Institute, National Institutes of Health, Bethesda, MD 20892, USA
| | - Christian A Combs
- National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD 20892, USA
| | - Armel Femnou
- National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD 20892, USA
| | - Junhui Sun
- National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD 20892, USA
| | - Elizabeth Murphy
- National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD 20892, USA
| | - Sriram Subramaniam
- National Cancer Institute, National Institutes of Health, Bethesda, MD 20892, USA
| | - Robert S Balaban
- National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD 20892, USA
| |
Collapse
|
19
|
Xie F, Rong B, Wang TC, Hao L, Lin MJ, Zhong JQ. Interaction between nitric oxide signaling and gap junctions during ischemic preconditioning: Importance of S-nitrosylation vs. protein kinase G activation. Nitric Oxide 2017; 65:37-42. [PMID: 28216239 DOI: 10.1016/j.niox.2017.02.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2016] [Revised: 11/18/2016] [Accepted: 02/03/2017] [Indexed: 12/13/2022]
Abstract
Much effort has been dedicated to exploring the mechanisms of IPC, and the GJ is one of the proposed targets of IPC. Several lines of evidence have indicated that NO affects GJ permeability regulation and expression of connexin isoforms. NO-induced stimulation of the sGC-cGMP pathway and the subsequent PKG activation could lead directly to connexin phosphorylation and GJ coupling modification. Additionally, because NO-induced cardioprotection against I/R injury beyond the cGMP/PKG-dependent pathway has been reported in isolated cardiomyocytes, it has been posited that NO-mediated GJ coupling might be independent from the activation of the NO-induced cGMP/PKG pathway during IPC. S-nitrosylation by NO exerts a major influence in IPC-induced cardioprotection. It has been suggested that NO-mediated cardioprotection during IPC was not dependent on sGC/cGMP/PKG but on SNO signaling. We need more researches to prove that which signaling pathway (S-nitrosylation or protein kinase G activation) is the major one modulating GJ coupling during IPC. The aim of review article is to discuss the possible signaling pathways of NO in regulating GJ during IPC.
Collapse
Affiliation(s)
- Fei Xie
- The Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education and Chinese Ministry of Health, The State and Shandong Province Joint Key Laboratory of Translational Cardiovascular Medicine, Qilu Hospital of Shandong University, Jinan, Shandong, China; Emergency Department, Qilu Hospital of Shandong University, Jinan, Shandong, China
| | - Bing Rong
- The Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education and Chinese Ministry of Health, The State and Shandong Province Joint Key Laboratory of Translational Cardiovascular Medicine, Qilu Hospital of Shandong University, Jinan, Shandong, China; Cadre Health Department, Qilu Hospital of Shandong University, Jinan, Shandong, China
| | - Tian-Cheng Wang
- The Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education and Chinese Ministry of Health, The State and Shandong Province Joint Key Laboratory of Translational Cardiovascular Medicine, Qilu Hospital of Shandong University, Jinan, Shandong, China
| | - Li Hao
- The Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education and Chinese Ministry of Health, The State and Shandong Province Joint Key Laboratory of Translational Cardiovascular Medicine, Qilu Hospital of Shandong University, Jinan, Shandong, China; School of Medicine, Shandong University, Jinan, China
| | - Ming-Jie Lin
- The Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education and Chinese Ministry of Health, The State and Shandong Province Joint Key Laboratory of Translational Cardiovascular Medicine, Qilu Hospital of Shandong University, Jinan, Shandong, China; School of Medicine, Shandong University, Jinan, China
| | - Jing-Quan Zhong
- The Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education and Chinese Ministry of Health, The State and Shandong Province Joint Key Laboratory of Translational Cardiovascular Medicine, Qilu Hospital of Shandong University, Jinan, Shandong, China.
| |
Collapse
|
20
|
See Hoe LE, May LT, Headrick JP, Peart JN. Sarcolemmal dependence of cardiac protection and stress-resistance: roles in aged or diseased hearts. Br J Pharmacol 2016; 173:2966-91. [PMID: 27439627 DOI: 10.1111/bph.13552] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2015] [Revised: 06/27/2016] [Accepted: 06/28/2016] [Indexed: 12/25/2022] Open
Abstract
Disruption of the sarcolemmal membrane is a defining feature of oncotic death in cardiac ischaemia-reperfusion (I-R), and its molecular makeup not only fundamentally governs this process but also affects multiple determinants of both myocardial I-R injury and responsiveness to cardioprotective stimuli. Beyond the influences of membrane lipids on the cytoprotective (and death) receptors intimately embedded within this bilayer, myocardial ionic homeostasis, substrate metabolism, intercellular communication and electrical conduction are all sensitive to sarcolemmal makeup, and critical to outcomes from I-R. As will be outlined in this review, these crucial sarcolemmal dependencies may underlie not only the negative effects of age and common co-morbidities on myocardial ischaemic tolerance but also the on-going challenge of implementing efficacious cardioprotection in patients suffering accidental or surgically induced I-R. We review evidence for the involvement of sarcolemmal makeup changes in the impairment of stress-resistance and cardioprotection observed with ageing and highly prevalent co-morbid conditions including diabetes and hypercholesterolaemia. A greater understanding of membrane changes with age/disease, and the inter-dependences of ischaemic tolerance and cardioprotection on sarcolemmal makeup, can facilitate the development of strategies to preserve membrane integrity and cell viability, and advance the challenging goal of implementing efficacious 'cardioprotection' in clinically relevant patient cohorts. Linked Articles This article is part of a themed section on Molecular Pharmacology of G Protein-Coupled Receptors. To view the other articles in this section visit http://onlinelibrary.wiley.com/doi/10.1111/bph.v173.20/issuetoc.
Collapse
Affiliation(s)
- Louise E See Hoe
- Menzies Health Institute Queensland, Griffith University, Gold Coast, Australia.,Critical Care Research Group, The Prince Charles Hospital and The University of Queensland, Chermside, Queensland, Australia
| | - Lauren T May
- Monash Institute of Pharmaceutical Sciences, Monash University, Clayton, VIC, Australia
| | - John P Headrick
- Menzies Health Institute Queensland, Griffith University, Gold Coast, Australia
| | - Jason N Peart
- Menzies Health Institute Queensland, Griffith University, Gold Coast, Australia.
| |
Collapse
|
21
|
Qin L, Zhu N, Ao BX, Liu C, Shi YN, Du K, Chen JX, Zheng XL, Liao DF. Caveolae and Caveolin-1 Integrate Reverse Cholesterol Transport and Inflammation in Atherosclerosis. Int J Mol Sci 2016; 17:429. [PMID: 27011179 PMCID: PMC4813279 DOI: 10.3390/ijms17030429] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2016] [Revised: 03/16/2016] [Accepted: 03/16/2016] [Indexed: 01/18/2023] Open
Abstract
Lipid disorder and inflammation play critical roles in the development of atherosclerosis. Reverse cholesterol transport is a key event in lipid metabolism. Caveolae and caveolin-1 are in the center stage of cholesterol transportation and inflammation in macrophages. Here, we propose that reverse cholesterol transport and inflammation in atherosclerosis can be integrated by caveolae and caveolin-1.
Collapse
Affiliation(s)
- Li Qin
- School of Pharmacy, Hunan University of Chinese Medicine, Changsha 410208, China.
| | - Neng Zhu
- Department of Urology, The First Hospital of Hunan University of Chinese Medicine, Changsha 410208, China.
| | - Bao-Xue Ao
- School of Pharmacy, Hunan University of Chinese Medicine, Changsha 410208, China.
| | - Chan Liu
- School of Pharmacy, Hunan University of Chinese Medicine, Changsha 410208, China.
| | - Ya-Ning Shi
- School of Pharmacy, Hunan University of Chinese Medicine, Changsha 410208, China.
| | - Ke Du
- School of Pharmacy, Hunan University of Chinese Medicine, Changsha 410208, China.
| | - Jian-Xiong Chen
- School of Pharmacy, Hunan University of Chinese Medicine, Changsha 410208, China.
- Department of Pharmacology and Toxicology, University of Mississippi Medical Center, School of Medicine, Jackson, MS 39216, USA.
| | - Xi-Long Zheng
- School of Pharmacy, Hunan University of Chinese Medicine, Changsha 410208, China.
- Department of Biochemistry & Molecular Biology, the Libin Cardiovascular Institute of Alberta, University of Calgary, 3330 Hospital Drive NW, Calgary, AB T2N 4N1, Canada.
| | - Duan-Fang Liao
- School of Pharmacy, Hunan University of Chinese Medicine, Changsha 410208, China.
| |
Collapse
|
22
|
Menazza S, Aponte A, Sun J, Gucek M, Steenbergen C, Murphy E. Molecular Signature of Nitroso-Redox Balance in Idiopathic Dilated Cardiomyopathies. J Am Heart Assoc 2015; 4:e002251. [PMID: 26396203 PMCID: PMC4599508 DOI: 10.1161/jaha.115.002251] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/04/2015] [Accepted: 08/19/2015] [Indexed: 12/28/2022]
Abstract
BACKGROUND Idiopathic dilated cardiomyopathy is one of the most common types of cardiomyopathy. It has been proposed that an increase in oxidative stress in heart failure leads to a decrease in nitric oxide signaling, leading to impaired nitroso-redox signaling. To test this hypothesis, we investigated the occurrence of protein S-nitrosylation (SNO) and oxidation in biopsies from explanted dilated cardiomyopathy and nonfailing donor male and female human hearts. METHODS AND RESULTS Redox-based resin-assisted capture for oxidation and SNO proteomic analysis was used to measure protein oxidation and SNO, respectively. In addition, 2-dimensional difference gel electrophoresis using maleimide sulfhydryl-reactive fluors was used to identify the SNO proteins. Protein oxidation increased in dilated cardiomyopathy biopsies in comparison with those from healthy donors. Interestingly, we did not find a consistent decrease in SNO in failing hearts; we found that some proteins showed an increase in SNO and others showed a decrease, and there were sex-specific differences in the response. We found 10 proteins with a significant decrease in SNO and 4 proteins with an increase in SNO in failing female hearts. Comparing nonfailing and failing male hearts, we found 9 proteins with a significant decrease and 12 proteins with a significant increase. We also found an increase in S-glutathionylation of endothelial nitric oxide synthase in failing female versus male hearts, suggesting an increase in uncoupled nitric oxide synthase in female hearts. CONCLUSION These findings highlight the importance of nitroso-redox signaling in both physiological and pathological conditions, suggesting a potential target to treat heart failure.
Collapse
Affiliation(s)
- Sara Menazza
- Systems Biology Center, National Heart Lung and Blood Institute, National Institutes of HealthBethesda, MD
| | - Angel Aponte
- Proteomic Core Facility, National Heart Lung and Blood Institute, National Institutes of HealthBethesda, MD
| | - Junhui Sun
- Systems Biology Center, National Heart Lung and Blood Institute, National Institutes of HealthBethesda, MD
| | - Marjan Gucek
- Proteomic Core Facility, National Heart Lung and Blood Institute, National Institutes of HealthBethesda, MD
| | | | - Elizabeth Murphy
- Systems Biology Center, National Heart Lung and Blood Institute, National Institutes of HealthBethesda, MD
| |
Collapse
|
23
|
Gonzalez-Reyes A, Menaouar A, Yip D, Danalache B, Plante E, Noiseux N, Gutkowska J, Jankowski M. Molecular mechanisms underlying oxytocin-induced cardiomyocyte protection from simulated ischemia-reperfusion. Mol Cell Endocrinol 2015; 412:170-81. [PMID: 25963797 DOI: 10.1016/j.mce.2015.04.028] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/24/2014] [Revised: 04/29/2015] [Accepted: 04/29/2015] [Indexed: 01/26/2023]
Abstract
Oxytocin (OT) stimulates cardioprotection. Here we investigated heart-derived H9c2 cells in simulated ischemia-reperfusion (I-R) experiments in order to examine the mechanism of OT protection. I-R was induced in an anoxic chamber for 2 hours and followed by 2 h of reperfusion. In comparison to normoxia, I-R resulted in decrease of formazan production by H9c2 cells to 63.5 ± 1.7% (MTT assay) and in enhanced apoptosis from 1.7 ± 0.3% to 2.8 ± 0.4% (Tunel test). Using these assays it was observed that treatment with OT (1-500 nM) exerted significant protection during I-R, especially when OT was added at the time of ischemia or reperfusion. Using the CM-H2DCFDA probe we found that OT triggers a short-lived burst in reactive oxygen species (ROS) production in cells but reduces ROS production evoked by I-R. In cells treated with OT, Western-blot revealed the phosphorylation of Akt (Thr 308, p-Akt), eNOS and ERK 1/2. Microscopy showed translocation of p-Akt and eNOS into the nuclear and perinuclear area and NO production in cells treated with OT. The OT-induced protection against I-R was abrogated by an OT antagonist, the Pi3K inhibitor Wortmannin, the cGMP-dependent protein kinase (PKG) inhibitor, KT5823, as well as soluble guanylate cyclase (GC) inhibitor, ODQ, and particulate GC antagonist, A71915. In conditions of I-R, the cells with siRNA-mediated reduction in OT receptor (OTR) expression responded to OT treatment by enhanced apoptosis. In conclusion, the OTR protected H9c2 cells against I-R, especially if activated at the onset of ischemia or reperfusion. The OTR-transduced signals include pro-survival kinases, such as Akt and PKG.
Collapse
Affiliation(s)
- Araceli Gonzalez-Reyes
- Cardiovascular Biochemistry Laboratory, CRCHUM, Montréal, Québec, Canada; Department of Experimental Medicine, McGill University
| | - Ahmed Menaouar
- Cardiovascular Biochemistry Laboratory, CRCHUM, Montréal, Québec, Canada
| | - Denis Yip
- Cardiovascular Biochemistry Laboratory, CRCHUM, Montréal, Québec, Canada; Department of Experimental Medicine, McGill University
| | - Bogdan Danalache
- Cardiovascular Biochemistry Laboratory, CRCHUM, Montréal, Québec, Canada
| | - Eric Plante
- Cardiovascular Biochemistry Laboratory, CRCHUM, Montréal, Québec, Canada
| | - Nicolas Noiseux
- Department of Surgery, Faculty of Medicine, University of Montreal
| | - Jolanta Gutkowska
- Cardiovascular Biochemistry Laboratory, CRCHUM, Montréal, Québec, Canada; Department of Experimental Medicine, McGill University; Department of Medicine, University of Montreal
| | - Marek Jankowski
- Cardiovascular Biochemistry Laboratory, CRCHUM, Montréal, Québec, Canada; Department of Medicine, University of Montreal.
| |
Collapse
|
24
|
Penna C, Angotti C, Pagliaro P. Protein S-nitrosylation in preconditioning and postconditioning. Exp Biol Med (Maywood) 2015; 239:647-62. [PMID: 24668550 DOI: 10.1177/1535370214522935] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
The coronary artery disease is a leading cause of death and morbidity worldwide. This disease has a complex pathophysiology that includes multiple mechanisms. Among these is the oxidative/nitrosative stress. Paradoxically, oxidative/nitrosative signaling plays a major role in cardioprotection against ischemia/reperfusion injury. In this context, the gas transmitter nitric oxide may act through several mechanisms, such as guanylyl cyclase activation and via S-nitrosylation of proteins. The latter is a covalent modification of a protein cysteine thiol by a nitric oxide-group that generates an S-nitrosothiol. Here, we report data showing that nitric oxide and S-nitrosylation of proteins play a pivotal role not only in preconditioning but also in postconditioning cardioprotection.
Collapse
|
25
|
Abstract
Reperfusion is mandatory to salvage ischemic myocardium from infarction, but reperfusion per se contributes to injury and ultimate infarct size. Therefore, cardioprotection beyond that by timely reperfusion is needed to reduce infarct size and improve the prognosis of patients with acute myocardial infarction. The conditioning phenomena provide such cardioprotection, insofar as brief episodes of coronary occlusion/reperfusion preceding (ischemic preconditioning) or following (ischemic postconditioning) sustained myocardial ischemia with reperfusion reduce infarct size. Even ischemia/reperfusion in organs remote from the heart provides cardioprotection (remote ischemic conditioning). The present review characterizes the signal transduction underlying the conditioning phenomena, including their physical and chemical triggers, intracellular signal transduction, and effector mechanisms, notably in the mitochondria. Cardioprotective signal transduction appears as a highly concerted spatiotemporal program. Although the translation of ischemic postconditioning and remote ischemic conditioning protocols to patients with acute myocardial infarction has been fairly successful, the pharmacological recruitment of cardioprotective signaling has been largely disappointing to date.
Collapse
Affiliation(s)
- Gerd Heusch
- From the Institute for Pathophysiology, West German Heart and Vascular Centre, University of Essen Medical School, Essen, Germany.
| |
Collapse
|
26
|
Sun J, Nguyen T, Aponte AM, Menazza S, Kohr MJ, Roth DM, Patel HH, Murphy E, Steenbergen C. Ischaemic preconditioning preferentially increases protein S-nitrosylation in subsarcolemmal mitochondria. Cardiovasc Res 2015; 106:227-36. [PMID: 25694588 DOI: 10.1093/cvr/cvv044] [Citation(s) in RCA: 71] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/17/2014] [Accepted: 02/08/2015] [Indexed: 12/16/2022] Open
Abstract
Nitric oxide (NO) and protein S-nitrosylation (SNO) have been shown to play important roles in ischaemic preconditioning (IPC)-induced acute cardioprotection. The majority of proteins that show increased SNO following IPC are localized to the mitochondria, and our recent studies suggest that caveolae transduce acute NO/SNO cardioprotective signalling in IPC hearts. Due to the close association between subsarcolemmal mitochondria (SSM) and the sarcolemma/caveolae, we tested the hypothesis that SSM, rather than the interfibrillar mitochondria (IFM), are major targets for NO/SNO signalling derived from caveolae-associated eNOS. Following either control perfusion or IPC, SSM and IFM were isolated from Langendorff perfused mouse hearts, and SNO was analysed using a modified biotin switch method with fluorescent maleimide fluors. In perfusion control hearts, the SNO content was higher in SSM compared with IFM (1.33 ± 0.19, ratio of SNO content Perf-SSM vs. Perf-IFM), and following IPC SNO content significantly increased preferentially in SSM, but not in IFM (1.72 ± 0.17 and 1.07 ± 0.04, ratio of SNO content IPC-SSM vs. Perf-IFM, and IPC-IFM vs. Perf-IFM, respectively). Consistent with these findings, eNOS, caveolin-3, and connexin-43 were detected in SSM, but not in IFM, and IPC resulted in a further significant increase in eNOS/caveolin-3 levels in SSM. Interestingly, we did not observe an IPC-induced increase in SNO or eNOS/caveolin-3 in SSM isolated from caveolin-3(-/-) mouse hearts, which could not be protected with IPC. In conclusion, these results suggest that SSM may be the preferential target of sarcolemmal signalling-derived post-translational protein modification (caveolae-derived eNOS/NO/SNO), thus providing an important role in IPC-induced cardioprotection.
Collapse
Affiliation(s)
- Junhui Sun
- Systems Biology Center, National Heart Lung and Blood Institute, National Institutes of Health, 10 Center Drive, Bldg10/Rm8N206, Bethesda, MD 20892, USA
| | - Tiffany Nguyen
- Systems Biology Center, National Heart Lung and Blood Institute, National Institutes of Health, 10 Center Drive, Bldg10/Rm8N206, Bethesda, MD 20892, USA
| | - Angel M Aponte
- Systems Biology Center, National Heart Lung and Blood Institute, National Institutes of Health, 10 Center Drive, Bldg10/Rm8N206, Bethesda, MD 20892, USA Proteomics Core Facility, National Heart Lung and Blood Institute, National Institutes of Health, Bethesda, MD 20892, USA
| | - Sara Menazza
- Systems Biology Center, National Heart Lung and Blood Institute, National Institutes of Health, 10 Center Drive, Bldg10/Rm8N206, Bethesda, MD 20892, USA
| | - Mark J Kohr
- Systems Biology Center, National Heart Lung and Blood Institute, National Institutes of Health, 10 Center Drive, Bldg10/Rm8N206, Bethesda, MD 20892, USA Department of Pathology, Johns Hopkins Medical Institutions, Baltimore, MD 21205, USA
| | - David M Roth
- Department of Anesthesiology, VA San Diego Healthcare System and University of California at San Diego, La Jolla, CA 92093, USA
| | - Hemal H Patel
- Department of Anesthesiology, VA San Diego Healthcare System and University of California at San Diego, La Jolla, CA 92093, USA
| | - Elizabeth Murphy
- Systems Biology Center, National Heart Lung and Blood Institute, National Institutes of Health, 10 Center Drive, Bldg10/Rm8N206, Bethesda, MD 20892, USA
| | - Charles Steenbergen
- Department of Pathology, Johns Hopkins Medical Institutions, Baltimore, MD 21205, USA
| |
Collapse
|
27
|
Kirca M, Kleinbongard P, Soetkamp D, Heger J, Csonka C, Ferdinandy P, Schulz R. Interaction between connexin 43 and nitric oxide synthase in mice heart mitochondria. J Cell Mol Med 2015; 19:815-25. [PMID: 25678382 PMCID: PMC4395196 DOI: 10.1111/jcmm.12499] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2014] [Accepted: 10/22/2014] [Indexed: 01/07/2023] Open
Abstract
Connexin 43 (Cx43), which is highly expressed in the heart and especially in cardiomyocytes, interferes with the expression of nitric oxide synthase (NOS) isoforms. Conversely, Cx43 gene expression is down-regulated by nitric oxide derived from the inducible NOS. Thus, a complex interplay between Cx43 and NOS expression appears to exist. As cardiac mitochondria are supposed to contain a NOS, we now investigated the expression of NOS isoforms and the nitric oxide production rate in isolated mitochondria of wild-type and Cx43-deficient (Cx43(Cre-ER(T)/fl) ) mice hearts. Mitochondria were isolated from hearts using differential centrifugation and purified via Percoll gradient ultracentrifugation. Isolated mitochondria were stained with an antibody against the mitochondrial marker protein adenine-nucleotide-translocator (ANT) in combination with either a neuronal NOS (nNOS) or an inducible NOS (iNOS) antibody and analysed using confocal laser scanning microscopy. The nitric oxide formation was quantified in purified mitochondria using the oxyhaemoglobin assay. Co-localization of predominantly nNOS (nNOS: 93 ± 4.1%; iNOS: 24.6 ± 7.5%) with ANT was detected in isolated mitochondria of wild-type mice. In contrast, iNOS expression was increased in Cx43(Cre-ER(T)/fl) mitochondria (iNOS: 90.7 ± 3.2%; nNOS: 53.8 ± 17.5%). The mitochondrial nitric oxide formation was reduced in Cx43(Cre-ER(T)/fl) mitochondria (0.14 ± 0.02 nmol/min./mg protein) in comparison to wild-type mitochondria (0.24 ± 0.02 nmol/min./mg). These are the first data demonstrating, that a reduced mitochondrial Cx43 content is associated with a switch of the mitochondrial NOS isoform and the respective mitochondrial rate of nitric oxide formation.
Collapse
Affiliation(s)
- Mücella Kirca
- Physiologisches Institut, Justus-Liebig-Universität, Giessen, Germany; Institute for Pathophysiology, West German Heart and Vascular Center, University Schhool of Medicine Essen, Essen, Germany
| | | | | | | | | | | | | |
Collapse
|
28
|
Xu L, Guo R, Xie Y, Ma M, Ye R, Liu X. Caveolae: molecular insights and therapeutic targets for stroke. Expert Opin Ther Targets 2015; 19:633-50. [PMID: 25639269 DOI: 10.1517/14728222.2015.1009446] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
INTRODUCTION Caveolae are specialized plasma membrane micro-invaginations of most mammalian cell types. The organization and function of caveolae are carried out by their coat proteins, caveolins and adaptor proteins, cavins. Caveolae/caveolins physically interact with membrane-associated signaling molecules and function in cholesterol incorporation, signaling transduction and macromolecular transport/permeability. AREAS COVERED Recent investigations have implicated a check-and-balance role of caveolae in the pathophysiology of cerebral ischemia. Caveolin knockout mice displayed exacerbated ischemic injury, whereas caveolin peptide exerted remarkable protection against ischemia/reperfusion injury. This review attempts to provide a comprehensive synopsis of how caveolae/caveolins modulate blood-brain barrier permeability, pro-survival signaling, angiogenesis and neuroinflammation, and how this may contribute to a better understanding of the participation of caveolae in ischemic cascade. The role of caveolin in the preconditioning-induced tolerance against ischemia is also discussed. EXPERT OPINION Caveolae represent a novel target for cerebral ischemia. It remains open how to manipulate caveolin expression in a practical way to recapitulate the beneficial therapeutic outcomes. Caveolin peptides and associated antagomirs may be efficacious and deserve further investigations for their potential benefits for stroke.
Collapse
Affiliation(s)
- Lili Xu
- Department of Neurology, Jinling Hospital, Medical School of Nanjing University , Nanjing 210002 , China
| | | | | | | | | | | |
Collapse
|
29
|
Pagliaro P, Penna C. Redox signalling and cardioprotection: translatability and mechanism. Br J Pharmacol 2015; 172:1974-95. [PMID: 25303224 DOI: 10.1111/bph.12975] [Citation(s) in RCA: 59] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2014] [Revised: 09/24/2014] [Accepted: 09/30/2014] [Indexed: 12/13/2022] Open
Abstract
The morbidity and mortality from coronary artery disease (CAD) remain significant worldwide. The treatment for acute myocardial infarction has improved over the past decades, including early reperfusion of culprit coronary arteries. Although it is mandatory to reperfuse the ischaemic territory as soon as possible, paradoxically this leads to additional myocardial injury, namely ischaemia/reperfusion (I/R) injury, in which redox stress plays a pivotal role and for which no effective therapy is currently available. In this review, we report evidence that the redox environment plays a pivotal role not only in I/R injury but also in cardioprotection. In fact, cardioprotective strategies, such as pre- and post-conditioning, result in a robust reduction in infarct size in animals and the role of redox signalling is of paramount importance in these conditioning strategies. Nitrosative signalling and cysteine redox modifications, such as S-nitrosation/S-nitrosylation, are also emerging as very important mechanisms in conditioning cardioprotection. The reasons for the switch from protective oxidative/nitrosative signalling to deleterious oxidative/nitrosative/nitrative stress are not fully understood. The complex regulation of this switch is, at least in part, responsible for the diminished or lack of cardioprotection induced by conditioning protocols observed in ageing animals and with co-morbidities as well as in humans. Therefore, it is important to understand at a mechanistic level the reasons for these differences before proposing a safe and useful transition of ischaemic or pharmacological conditioning. Indeed, more mechanistic novel therapeutic strategies are required to protect the heart from I/R injury and to improve clinical outcomes in patients with CAD.
Collapse
Affiliation(s)
- P Pagliaro
- Department of Clinical and Biological Sciences, University of Torino, 10043, Orbassano, Turin, Italy
| | | |
Collapse
|
30
|
Farah C, Reboul C. NO Better Way to Protect the Heart during Ischemia-Reperfusion: To be in the Right Place at the Right Time. Front Pediatr 2015; 3:6. [PMID: 25705614 PMCID: PMC4319379 DOI: 10.3389/fped.2015.00006] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/05/2015] [Accepted: 01/26/2015] [Indexed: 11/24/2022] Open
Affiliation(s)
- Charlotte Farah
- EA4278, LaPEC, Université d'Avignon , Avignon , France ; UMR-CNRS 9214, INSERM U1046, Université de Montpellier , Montpellier , France
| | - Cyril Reboul
- EA4278, LaPEC, Université d'Avignon , Avignon , France
| |
Collapse
|
31
|
Kohr MJ, Murphy E, Steenbergen C. Glyceraldehyde-3-phosphate dehydrogenase acts as a mitochondrial trans-S-nitrosylase in the heart. PLoS One 2014; 9:e111448. [PMID: 25347796 PMCID: PMC4210263 DOI: 10.1371/journal.pone.0111448] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2014] [Accepted: 10/02/2014] [Indexed: 12/19/2022] Open
Abstract
Mitochondrial proteins have been shown to be common targets of S-nitrosylation (SNO), but the existence of a mitochondrial source of nitric oxide remains controversial. SNO is a nitric oxide-dependent thiol modification that can regulate protein function. Interestingly, trans-S-nitrosylation represents a potential pathway for the import of SNO into the mitochondria. The glycolytic enzyme glyceraldehyde-3-phosphate dehydrogenase (GAPDH), which has been shown to act as a nuclear trans-S-nitrosylase, has also been shown to enter mitochondria. However, the function of GAPDH in the mitochondria remains unknown. Therefore, we propose the hypothesis that S-nitrosylated GAPDH (SNO-GAPDH) interacts with mitochondrial proteins as a trans-S-nitrosylase. In accordance with this hypothesis, SNO-GAPDH should be detected in mitochondrial fractions, interact with mitochondrial proteins, and increase mitochondrial SNO levels. Our results demonstrate a four-fold increase in GAPDH levels in the mitochondrial fraction of mouse hearts subjected to ischemic preconditioning, which increases SNO-GAPDH levels. Co-immunoprecipitation studies performed in mouse hearts perfused with the S-nitrosylating agent S-nitrosoglutathione (GSNO), suggest that SNO promotes the interaction of GAPDH with mitochondrial protein targets. The addition of purified SNO-GAPDH to isolated mouse heart mitochondria demonstrated the ability of SNO-GAPDH to enter the mitochondrial matrix, and to increase SNO for many mitochondrial proteins. Further, the overexpression of GAPDH in HepG2 cells increased SNO for a number of different mitochondrial proteins, including heat shock protein 60, voltage-dependent anion channel 1, and acetyl-CoA acetyltransferase, thus supporting the role of GAPDH as a potential mitochondrial trans-S-nitrosylase. In further support of this hypothesis, many of the mitochondrial SNO proteins identified with GAPDH overexpression were no longer detected with GAPDH knock-down or mutation. Therefore, our results suggest that SNO-GAPDH can act as a mitochondrial trans-S-nitrosylase, thereby conferring the transfer of SNO from the cytosol to the mitochondria.
Collapse
Affiliation(s)
- Mark J. Kohr
- Department of Pathology, Johns Hopkins University School of Medicine, Baltimore, Maryland, United States of America
- Systems Biology Center, National Heart Lung and Blood Institute/National Institutes of Health, Bethesda, Maryland, United States of America
| | - Elizabeth Murphy
- Systems Biology Center, National Heart Lung and Blood Institute/National Institutes of Health, Bethesda, Maryland, United States of America
| | - Charles Steenbergen
- Department of Pathology, Johns Hopkins University School of Medicine, Baltimore, Maryland, United States of America
| |
Collapse
|
32
|
Soetkamp D, Nguyen TT, Menazza S, Hirschhäuser C, Hendgen-Cotta UB, Rassaf T, Schlüter KD, Boengler K, Murphy E, Schulz R. S-nitrosation of mitochondrial connexin 43 regulates mitochondrial function. Basic Res Cardiol 2014; 109:433. [PMID: 25115184 PMCID: PMC4168224 DOI: 10.1007/s00395-014-0433-x] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/01/2014] [Revised: 08/05/2014] [Accepted: 08/06/2014] [Indexed: 01/31/2023]
Abstract
S-nitrosation (SNO) of connexin 43 (Cx43)-formed channels modifies dye uptake in astrocytes and gap junctional communication in endothelial cells. Apart from forming channels at the plasma membrane of several cell types, Cx43 is also located at the inner membrane of myocardial subsarcolemmal mitochondria (SSM), but not in interfibrillar mitochondria (IFM). The absence or pharmacological blockade of mitochondrial Cx43 (mtCx43) reduces dye and potassium uptake. Lack of mtCx43 is associated with loss of endogenous cardioprotection by ischemic preconditioning (IPC), which is mediated by formation of reactive oxygen species (ROS). Whether or not mitochondrial Lucifer Yellow (LY), ion uptake, or ROS generation are affected by SNO of mtCx43 and whether or not cardioprotective interventions affect SNO of mtCx43 remains unknown. In SSM from rat hearts, application of NO donors (48 nmol to 1 mmol) increased LY uptake (0.5 mmol SNAP 38.4 ± 7.1 %, p < 0.05; 1 mmol GSNO 28.1 ± 7.4 %, p < 0.05) and the refilling rate of potassium (SNAP 227.9 ± 30.1 %, p < 0.05; GSNO 122.6 ± 28.1 %, p < 0.05). These effects were absent following blockade of Cx43 hemichannels by carbenoxolone as well as in IFM lacking Cx43. Unlike potassium, the sodium permeability was not affected by application of NO. Furthermore, mitochondrial ROS formation was increased following NO application compared to control SSM (0.5 mmol SNAP 22.9 ± 1.8 %, p < 0.05; 1 mmol GSNO 40.6 ± 7.1 %, p < 0.05), but decreased in NO treated IFM compared to control (0.5 mmol SNAP 14.4 ± 4 %, p < 0.05; 1 mmol GSNO 13.8 ± 4 %, p < 0.05). NO donor administration to isolated SSM increased SNO of mtCx43 by 109.2 ± 15.8 %. Nitrite application (48 nmol) to mice was also associated with elevated SNO of mtCx43 by 59.3 ± 18.2 % (p < 0.05). IPC by four cycles of 5 min of ischemia and 5 min of reperfusion increased SNO of mtCx43 by 41.6 ± 1.7 % (p < 0.05) when compared to control perfused rat hearts. These data suggest that SNO of mtCx43 increases mitochondrial permeability, especially for potassium and leads to increased ROS formation. The increased amount of SNO mtCx43 by IPC or nitrite administration may link NO and Cx43 in the signal transduction cascade of cardioprotective interventions.
Collapse
Affiliation(s)
- Daniel Soetkamp
- Systems Biology Center, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD, USA
| | | | | | | | | | | | | | | | | | | |
Collapse
|
33
|
See Hoe LE, Schilling JM, Tarbit E, Kiessling CJ, Busija AR, Niesman IR, Du Toit E, Ashton KJ, Roth DM, Headrick JP, Patel HH, Peart JN. Sarcolemmal cholesterol and caveolin-3 dependence of cardiac function, ischemic tolerance, and opioidergic cardioprotection. Am J Physiol Heart Circ Physiol 2014; 307:H895-903. [PMID: 25063791 DOI: 10.1152/ajpheart.00081.2014] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Cholesterol-rich caveolar microdomains and associated caveolins influence sarcolemmal ion channel and receptor function and protective stress signaling. However, the importance of membrane cholesterol content to cardiovascular function and myocardial responses to ischemia-reperfusion (I/R) and cardioprotective stimuli are unclear. We assessed the effects of graded cholesterol depletion with methyl-β-cyclodextrin (MβCD) and lifelong knockout (KO) or overexpression (OE) of caveolin-3 (Cav-3) on cardiac function, I/R tolerance, and opioid receptor (OR)-mediated protection. Langendorff-perfused hearts from young male C57Bl/6 mice were untreated or treated with 0.02-1.0 mM MβCD for 25 min to deplete membrane cholesterol and disrupt caveolae. Hearts were subjected to 25-min ischemia/45-min reperfusion, and the cardioprotective effects of morphine applied either acutely or chronically [sustained ligand-activated preconditioning (SLP)] were assessed. MβCD concentration dependently reduced normoxic contractile function and postischemic outcomes in association with graded (10-30%) reductions in sarcolemmal cholesterol. Cardioprotection with acute morphine was abolished with ≥20 μM MβCD, whereas SLP was more robust and only inhibited with ≥200 μM MβCD. Deletion of Cav-3 also reduced, whereas Cav-3 OE improved, myocardial I/R tolerance. Protection via SLP remained equally effective in Cav-3 KO mice and was additive with innate protection arising with Cav-3 OE. These data reveal the membrane cholesterol dependence of normoxic myocardial and coronary function, I/R tolerance, and OR-mediated cardioprotection in murine hearts (all declining with cholesterol depletion). In contrast, baseline function appears insensitive to Cav-3, whereas cardiac I/R tolerance parallels Cav-3 expression. Novel SLP appears unique, being less sensitive to cholesterol depletion than acute OR protection and arising independently of Cav-3 expression.
Collapse
Affiliation(s)
- Louise E See Hoe
- Heart Foundation Research Centre, Griffith Health Institute, Griffith University, Southport, Queensland, Australia
| | - Jan M Schilling
- Veterans Affairs San Diego Healthcare System, San Diego, California
| | - Emiri Tarbit
- Heart Foundation Research Centre, Griffith Health Institute, Griffith University, Southport, Queensland, Australia
| | - Can J Kiessling
- Faculty of Health Sciences and Medicine, Bond University, Robina, Queensland, Australia; and
| | - Anna R Busija
- Veterans Affairs San Diego Healthcare System, San Diego, California
| | - Ingrid R Niesman
- Veterans Affairs San Diego Healthcare System, San Diego, California
| | - Eugene Du Toit
- Heart Foundation Research Centre, Griffith Health Institute, Griffith University, Southport, Queensland, Australia
| | - Kevin J Ashton
- Faculty of Health Sciences and Medicine, Bond University, Robina, Queensland, Australia; and
| | - David M Roth
- Veterans Affairs San Diego Healthcare System, San Diego, California; Department of Anesthesiology, University of California, San Diego, California
| | - John P Headrick
- Heart Foundation Research Centre, Griffith Health Institute, Griffith University, Southport, Queensland, Australia
| | - Hemal H Patel
- Veterans Affairs San Diego Healthcare System, San Diego, California; Department of Anesthesiology, University of California, San Diego, California
| | - Jason N Peart
- Heart Foundation Research Centre, Griffith Health Institute, Griffith University, Southport, Queensland, Australia;
| |
Collapse
|
34
|
Siu KL, Lotz C, Ping P, Cai H. Netrin-1 abrogates ischemia/reperfusion-induced cardiac mitochondrial dysfunction via nitric oxide-dependent attenuation of NOX4 activation and recoupling of NOS. J Mol Cell Cardiol 2014; 78:174-85. [PMID: 25066694 DOI: 10.1016/j.yjmcc.2014.07.005] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/06/2014] [Revised: 07/06/2014] [Accepted: 07/07/2014] [Indexed: 01/21/2023]
Abstract
Despite an established role of mitochondrial dysfunction in cardiac ischemia/reperfusion (I/R) injury, the upstream activators have remained incompletely defined. We have recently identified an innovative role of exogenously applied netrin-1 in cardioprotection, which is mediated by increased nitric oxide (NO) bioavailability. Here, we tested the hypothesis that this "pharmacological" treatment of netrin-1 preserves mitochondrial function via novel mechanisms that are NO dependent. Freshly isolated C57BL6 mouse hearts were perfused using a Langendorff system, and subjected to a 20min global ischemia/60min reperfusion, in the presence or absence of netrin-1. I/R induced marked increases in infarct size, total superoxide and hydrogen peroxide production, activity and protein abundance of NADPH oxidase (NOX) isoform 4 (NOX4), as well as impaired mitochondrial integrity and function, all of which were attenuated by netrin-1. This protective effect of netrin-1 is attributed to cGMP, a downstream effector of NO. The protein levels of NOX1 and NOX2 were however unaffected, and infarct size from NOX1 and NOX2 knockouts was not different from wild type animals. Scavenging of NO with PTIO reversed inhibitory effects of netrin-1 on NOX4, while NO donor attenuated NOX4 protein abundance. In vivo NOX4 RNAi, or sepiapterin perfusion, resulted in recoupling of NOS, decreased infarct size, and blockade of dysfunctional mitochondrial swelling and mitochondrial superoxide production. These data demonstrate that netrin-1 induces cardioprotection through inhibition of NOX4 activity, which leads to recoupling of NOS, augmented NO bioavailability, reduction in oxidative stress, and ultimately preservation of mitochondrial function. The NO-dependent NOX4 inhibition connects with our previously established pathway of DCC/ERK1/2/eNOS/NO/DCC feed-forward mechanism, to maintain NOS in the coupling state to attenuate oxidative stress to preserve mitochondrial function. These findings may promote development of novel therapeutics for cardiac I/R injury. This article is part of a Special Issue entitled "Mitochondria: From Basic Mitochondrial Biology to Cardiovascular Disease".
Collapse
Affiliation(s)
- Kin Lung Siu
- Divisions of Molecular Medicine and Cardiology, Department of Anesthesiology, Cardiovascular Research Laboratories, David Geffen School of Medicine at University of California Los Angeles, Los Angeles, CA, USA; Divisions of Molecular Medicine and Cardiology, Department of Medicine, Cardiovascular Research Laboratories, David Geffen School of Medicine at University of California Los Angeles, Los Angeles, CA, USA
| | - Christopher Lotz
- Department of Physiology, Cardiovascular Research Laboratories, David Geffen School of Medicine at University of California Los Angeles, Los Angeles, CA, USA
| | - Peipei Ping
- Department of Physiology, Cardiovascular Research Laboratories, David Geffen School of Medicine at University of California Los Angeles, Los Angeles, CA, USA
| | - Hua Cai
- Divisions of Molecular Medicine and Cardiology, Department of Anesthesiology, Cardiovascular Research Laboratories, David Geffen School of Medicine at University of California Los Angeles, Los Angeles, CA, USA; Divisions of Molecular Medicine and Cardiology, Department of Medicine, Cardiovascular Research Laboratories, David Geffen School of Medicine at University of California Los Angeles, Los Angeles, CA, USA.
| |
Collapse
|
35
|
Hernández-Reséndiz S, Zazueta C. PHO-ERK1/2 interaction with mitochondria regulates the permeability transition pore in cardioprotective signaling. Life Sci 2014; 108:13-21. [PMID: 24835217 DOI: 10.1016/j.lfs.2014.04.037] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2014] [Revised: 04/03/2014] [Accepted: 04/30/2014] [Indexed: 12/24/2022]
Abstract
AIMS The molecular mechanism(s) by which extracellular signal-regulated kinase 1/2 (ERK1/2) and other kinases communicate with downstream targets have not been fully determined. Multiprotein signaling complexes undergoing spatiotemporal redistribution may enhance their interaction with effector proteins promoting cardioprotective response. Particularly, it has been proposed that some active kinases in association with caveolae may converge into mitochondria. Therefore, in this study we investigate if PHO-ERK1/2 interaction with mitochondria may provide a mechanistic link in the regulation of these organelles in cardioprotective signaling. MAIN METHODS Using a model of dilated cardiomyopathy followed by ischemia-reperfusion injury, we determined ERK1/2 signaling at the level of mitochondria and evaluated its effect on the permeability transition pore. KEY FINDINGS The most important finding of the present study is that, under cardioprotective conditions, a subpopulation of activated ERK1/2 was directed to the mitochondrial membranes through vesicular trafficking, concurring with increased phosphorylation of mitochondrial proteins and inhibition of the mitochondrial permeability transition pore opening. In addition, our results suggest that vesicles enriched with caveolin-3 could form structures that may drive ERK1/2, GSK3β and Akt to mitochondria. SIGNIFICANCE Signaling complexes including PHO-ERK, PHO-Akt, PHO-eNOS and caveolin-3 contribute to cardioprotection by directly targeting the mitochondrial proteome and regulating the opening of the permeability transition pore in this model.
Collapse
Affiliation(s)
- Sauri Hernández-Reséndiz
- Department of Cardiovascular Biomedicine, National Institute of Cardiology, I.Ch., Juan Badiano No. 1, Colonia Sección XVI, Mexico 14080, DF, Mexico
| | - Cecilia Zazueta
- Department of Cardiovascular Biomedicine, National Institute of Cardiology, I.Ch., Juan Badiano No. 1, Colonia Sección XVI, Mexico 14080, DF, Mexico.
| |
Collapse
|
36
|
Chang AHK, Sancheti H, Garcia J, Kaplowitz N, Cadenas E, Han D. Respiratory substrates regulate S-nitrosylation of mitochondrial proteins through a thiol-dependent pathway. Chem Res Toxicol 2014; 27:794-804. [PMID: 24716714 PMCID: PMC4033640 DOI: 10.1021/tx400462r] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
![]()
S-Nitrosylation is a reversible post-translational
modification
on cysteinyl thiols that can modulate the function of redox-sensitive
proteins. The S-nitrosylation of mitochondrial proteins has been shown
to regulate various mitochondrial activities involved in energy-transducing
systems and mitochondrion-driven apoptosis. In isolated rat brain
mitochondria, we demonstrate that mitochondrial protein S-nitrosylation
is regulated by respiratory substrates (glutamate/malate) through
a thiol-dependent pathway. Mitochondrial proteins become susceptible
to S-nitrosoglutathione (GSNO)-induced S-nitrosylation
in mitochondria with an oxidized environment (low glutathione (GSH),
NADH, and NADPH, and high GSSG, NAD+, and NADP+) caused by isolation of mitochondria using a discontinuous Percoll
gradient. Activation of mitochondrial respiration by respiratory substrates
leads to increased NAD(P)H and GSH levels, which in turn reduces mitochondrial
S-nitrosylated proteins. 1-Chloro-2,4-dinitrobenzene (CDNB), which
depletes mitochondrial GSH and inhibits the thioredoxin–thioredoxin
reductase system, prevented the denitrosylation of mitochondrial proteins
caused by respiratory substrate treatment. Using biotin-switch coupled
with LC-MS/MS, several mitochondrial proteins were identified as targets
of S-nitrosylation including adenine nucleotide translocase (ANT)
and voltage-dependent anion channel (VDAC), important components of
the mitochondria permeability transition pore (MPTP), as well as ATP
synthase. The S-nitrosylation of ATP synthase by GSNO was found to
inhibit its activity. These findings emphasize the importance of respiratory
substrates in regulating S-nitrosylation through a thiol-dependent
(GSH and/or thioredoxin) pathway, with implications for mitochondrial
bioenergetics and mitochondrion-driven apoptosis.
Collapse
Affiliation(s)
- Allen H K Chang
- Department of Pharmacology & Pharmaceutical Sciences, School of Pharmacy, University of Southern California , Los Angeles, California 90089, United States
| | | | | | | | | | | |
Collapse
|
37
|
Kohr MJ, Evangelista AM, Ferlito M, Steenbergen C, Murphy E. S-nitrosylation of TRIM72 at cysteine 144 is critical for protection against oxidation-induced protein degradation and cell death. J Mol Cell Cardiol 2014; 69:67-74. [PMID: 24487118 PMCID: PMC3954155 DOI: 10.1016/j.yjmcc.2014.01.010] [Citation(s) in RCA: 58] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/05/2013] [Revised: 01/16/2014] [Accepted: 01/22/2014] [Indexed: 01/28/2023]
Abstract
Oxidative stress and membrane damage following myocardial ischemia/reperfusion injury are important contributors to cardiomyocyte death and the loss of myocardial function. Our previous study identified cysteine 144 (C144) of tripartite motif-containing protein 72 (TRIM72) as a potential site for S-nitrosylation (SNO). TRIM72 is a cardioprotective membrane repair protein that can be both activated and targeted for degradation by different oxidative modifications. Consistent with the potential regulation of TRIM72 by various oxidative modifications, we found that SNO levels increased at C144 of TRIM72 with ischemic preconditioning. Therefore, to investigate the role of C144 in the regulation of TRIM72 function, we mutated C144 of TRIM72 to a serine residue (TRIM72(C144S)), and expressed either TRIM72(WT) or TRIM72(C144S) in HEK-293 cells, which lack endogenous TRIM72, in order to examine the effect of this mutation on the functional stability of TRIM72 and on cell survival. We hypothesized that SNO of TRIM72 stabilizes the protein, thus allowing for membrane repair and enhanced cell survival. Upon treatment with hydrogen peroxide (H2O2), we found that TRIM72(WT) levels were decreased, but not TRIM72(C144S) and this correlated with increased H2O2-induced cell death in TRIM72(WT) cells. Additionally, we found that treatment with the cardioprotective S-nitrosylating agent S-nitrosoglutathione (GSNO), was able to preserve TRIM72(WT) protein levels and enhance TRIM72(WT)-mediated cell survival, but had no effect on TRIM72(C144S) levels. Consistent with our hypothesis, GSNO was also found to increase SNO levels and inhibit H2O2-induced irreversible oxidation for TRIM72(WT) without affecting TRIM72(C144S). In further support of our hypothesis, GSNO blocked the ischemia/reperfusion-induced decrease in TRIM72 levels and reduced infarct size in a Langendorff-perfused heart model. The results of these studies have important implications for cardioprotection and suggest that SNO of TRIM72 at C144 prevents the oxidation-induced degradation of TRIM72 following oxidative insult, therefore enhancing cardiomyocyte survival.
Collapse
Affiliation(s)
- Mark J Kohr
- Systems Biology Center, National Heart, Lung and Blood Institute, National Institutes of Health, 10 Center Drive, Bethesda, MD 20892, USA; Division of Cardiovascular Pathology, Department of Pathology, 720 Rutland Avenue, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA.
| | - Alicia M Evangelista
- Systems Biology Center, National Heart, Lung and Blood Institute, National Institutes of Health, 10 Center Drive, Bethesda, MD 20892, USA
| | - Marcella Ferlito
- Division of Cardiology, Department of Medicine, 720 Rutland Avenue, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
| | - Charles Steenbergen
- Division of Cardiovascular Pathology, Department of Pathology, 720 Rutland Avenue, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
| | - Elizabeth Murphy
- Systems Biology Center, National Heart, Lung and Blood Institute, National Institutes of Health, 10 Center Drive, Bethesda, MD 20892, USA
| |
Collapse
|
38
|
Yano T, Ferlito M, Aponte A, Kuno A, Miura T, Murphy E, Steenbergen C. Pivotal role of mTORC2 and involvement of ribosomal protein S6 in cardioprotective signaling. Circ Res 2014; 114:1268-80. [PMID: 24557881 DOI: 10.1161/circresaha.114.303562] [Citation(s) in RCA: 54] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
RATIONALE There is tight coupling between Akt activation and suppression of cell death. Full Akt activation requires mammalian target of rapamycin complex 2 (mTORC2), but the regulation of mTORC2 is unclear. OBJECTIVE To gain new insights into mechanisms of mTORC2/Akt signaling. METHODS AND RESULTS The role of mTORC2 in cardioprotection was examined. In perfused mouse hearts, ischemic preconditioning increased mTORC2 activity, leading to phosphorylation of Akt on Ser473. The protective effect of ischemic preconditioning was lost by pretreatment with dual mTORC inhibitors but not with rapamycin, an mTORC1 inhibitor, which indicates the fundamental role of mTORC2 activation in cardioprotection. Next, the regulation and downstream targets of mTORC2/Akt signaling were explored. We have found that ischemic preconditioning and other Akt activators (insulin and opioids) result in phosphorylation of ribosomal protein S6 (Rps6) at Ser235/236 in mouse hearts and neonatal rat ventricular myocytes. Rps6 interacts with components of mTORC2, and siRNA-mediated knockdown of Rps6 attenuates insulin-induced mTORC2 activation and Akt-Ser473 phosphorylation. On the other hand, Rps6 overexpression enhanced Akt-Ser473 phosphorylation, indicating that Rps6 activation amplifies mTORC2/Akt signaling. Disruption of the Rps6/mTORC2 pathway by knockdown of Rps6 or rictor abrogated insulin-induced cytoprotection against oxidative stress. Although rapamycin blocks Rps6-dependent mTORC2 activation, mTORC2 is still activated by an alternative signaling pathway, demonstrating the redundancy in cardioprotective signaling. CONCLUSIONS Activation of mTORC2 plays a pivotal role in cardioprotection, and Rps6 is a convergence point of cardioprotective signaling, providing positive feedback regulation of mTORC2/Akt signaling.
Collapse
Affiliation(s)
- Toshiyuki Yano
- From the Department of Pathology (T.Y., C.S.) and Division of Cardiology, Department of Medicine (M.F.), Johns Hopkins University, Baltimore, MD; Proteomics Core (A.A.) and Systems Biology Center (E.M.), National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD; and Departments of Cardiovascular, Renal, and Metabolic Medicine (T.Y., A.K., T.M.) and Pharmacology (A.K.), Sapporo Medical University, Sapporo, Japan
| | | | | | | | | | | | | |
Collapse
|
39
|
Zhang WZ. An association of metabolic syndrome constellation with cellular membrane caveolae. PATHOBIOLOGY OF AGING & AGE RELATED DISEASES 2014; 4:23866. [PMID: 24563731 PMCID: PMC3926988 DOI: 10.3402/pba.v4.23866] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 01/03/2014] [Revised: 01/21/2014] [Accepted: 01/21/2014] [Indexed: 01/19/2023]
Abstract
Metabolic syndrome (MetS) is a cluster of metabolic abnormalities that can predispose an individual to a greater risk of developing type-2 diabetes and cardiovascular diseases. The cluster includes abdominal obesity, dyslipidemia, hypertension, and hyperglycemia - all of which are risk factors to public health. While searching for a link among the aforementioned malaises, clues have been focused on the cell membrane domain caveolae, wherein the MetS-associated active molecules are colocalized and interacted with to carry out designated biological activities. Caveola disarray could induce all of those individual metabolic abnormalities to be present in animal models and humans, providing a new target for therapeutic strategy in the management of MetS.
Collapse
Affiliation(s)
- Wei-Zheng Zhang
- CMP Laboratory, Port Melbourne, Melbourne, Victoria, Australia
| |
Collapse
|
40
|
Tong G, Aponte AM, Kohr MJ, Steenbergen C, Murphy E, Sun J. Postconditioning leads to an increase in protein S-nitrosylation. Am J Physiol Heart Circ Physiol 2014; 306:H825-32. [PMID: 24441547 DOI: 10.1152/ajpheart.00660.2013] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Previous studies have shown a role for nitric oxide and S-nitrosylation (SNO) in postconditioning (PostC), but specific SNO proteins and sites have not been identified in the myocardium after PostC. In this study, we examined SNO signaling in PostC using a Langendorff-perfused mouse heart model. After 20 min of equilibrium perfusion and 25 min of global ischemia, PostC was applied at the beginning of reperfusion with six cycles of 10 s of reperfusion and 10 s of ischemia. The total period of reperfusion was 90 min. Compared with the ischemia-reperfusion (I/R) control, PostC significantly reduced postischemic contractile dysfunction and infarct size. PostC-induced protection was blocked by treatment with N(G)-nitro-l-arginine methyl ester (l-NAME) (10 μmol/l; a constitutive NO synthase inhibitor), but not by either ODQ (10 μmol/l, a highly selective soluble guanylyl cyclase inhibitor) or KT5823 (1 μmol/l, a specific protein kinase G inhibitor). Two biotin switch based methods, two dimensional CyDye-maleimide difference gel electrophoresis (2D CyDye-maleimide DIGE) and SNO-resin-assisted capture (SNO-RAC), were utilized to identify SNO-modified proteins and sites. Using 2D CyDye-maleimide DIGE analysis, PostC was found to cause a 25% or greater increase in SNO of a number of proteins, which was blocked by treatment with l-NAME in parallel with the loss of protection. Using SNO-RAC, we identified 77 unique proteins with SNO sites after PostC. These results suggest that NO-mediated SNO signaling is involved in PostC-induced cardioprotection and these data provide the first set of candidate SNO proteins in PostC hearts.
Collapse
Affiliation(s)
- Guang Tong
- Department of Cardiovascular Surgery, Guangzhou General Hospital of Guangzhou Military Command, Guangzhou, Guangdong Province, China
| | | | | | | | | | | |
Collapse
|
41
|
Redox balance and cardioprotection. Basic Res Cardiol 2013; 108:392. [DOI: 10.1007/s00395-013-0392-7] [Citation(s) in RCA: 101] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/23/2013] [Revised: 09/24/2013] [Accepted: 10/14/2013] [Indexed: 12/11/2022]
|
42
|
Evangelista AM, Kohr MJ, Murphy E. S-nitrosylation: specificity, occupancy, and interaction with other post-translational modifications. Antioxid Redox Signal 2013; 19:1209-19. [PMID: 23157187 PMCID: PMC3785808 DOI: 10.1089/ars.2012.5056] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
SIGNIFICANCE S-nitrosylation (SNO) has been identified throughout the body as an important signaling modification both in physiology and a variety of diseases. SNO is a multifaceted post-translational modification, in that it can either act as a signaling molecule itself or as an intermediate to other modifications. RECENT ADVANCES AND CRITICAL ISSUES Through extensive SNO research, we have made progress toward understanding the importance of single cysteine-SNO sites; however, we are just beginning to explore the importance of specific SNO within the context of other SNO sites and post-translational modifications. Additionally, compartmentalization and SNO occupancy may play an important role in the consequences of the SNO modification. FUTURE DIRECTIONS In this review, we will consider the context of SNO signaling and discuss how the transient nature of SNO, its role as an oxidative intermediate, and the pattern of SNO, should be considered when determining the impact of SNO signaling.
Collapse
Affiliation(s)
- Alicia M Evangelista
- 1 Systems Biology Center, National Heart, Lung and Blood Institute, National Institutes of Health , Bethesda, Maryland
| | | | | |
Collapse
|
43
|
Liaw NY, Hoe LS, Sheeran FL, Peart JN, Headrick JP, Cheung MMH, Pepe S. Postnatal shifts in ischemic tolerance and cell survival signaling in murine myocardium. Am J Physiol Regul Integr Comp Physiol 2013; 305:R1171-81. [PMID: 24068046 DOI: 10.1152/ajpregu.00198.2013] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The immature heart is known to be resistant to ischemia-reperfusion (I/R) injury; however, key proteins engaged in phospho-dependent signaling pathways crucial to cell survival are not yet defined. Our goal was to determine the postnatal changes in myocardial tolerance to I/R, including baseline expression of key proteins governing I/R tolerance and their phosphorylation during I/R. Hearts from male C57Bl/6 mice (neonates, 2, 4, 8, and 12 wk of age, n = 6/group) were assayed for survival signaling/effectors [Akt, p38MAPK, glycogen synthase kinase-3β (GSK-3β), heat shock protein 27 (HSP27), connexin-43, hypoxia-inducible factor-1α (HIF-1α), and caveolin-3] and regulators of apoptosis (Bax and Bcl-2) and autophagy (LC3B, Parkin, and Beclin1). The effect of I/R on ventricular function was measured in isolated perfused hearts from immature (4 wk) and adult (12 wk) mice. The neonatal myocardium exhibits a large pool of inactive Akt; high phospho-activation of p38MAPK, HSP27 and connexin-43; phospho-inhibition of GSK-3β; and high expression of caveolin-3, HIF-1α, LC3B, Beclin1, Bax, and Bcl-2. Immature hearts sustained less dysfunction and infarction following I/R than adults. Emergence of I/R intolerance in adult vs. immature hearts was associated with complex proteomic changes: decreased expression of Akt, Bax, and Bcl-2; increased GSK-3β, connexin-43, HIF-1α, LC3B, and Bax:Bcl-2; enhanced postischemic HIF-1α, caveolin-3, Bax, and Bcl-2; and greater postischemic GSK-3β and HSP27 phosphorylation. Neonatal myocardial stress resistance reflects high expression of prosurvival and autophagy proteins and apoptotic regulators. Notably, there is high phosphorylation of GSK-3β, p38MAPK, and HSP27 and low phosphorylation of Akt (high Akt "reserve"). Subsequent maturation-related reductions in I/R tolerance are associated with reductions in Akt, Bcl-2, LC3B, and Beclin1, despite increased expression and reduced phospho-inhibition of GSK-3β.
Collapse
Affiliation(s)
- Norman Y Liaw
- Heart Research, Murdoch Childrens Research Institute; Department of Cardiology, The Royal Children's Hospital; Department of Paediatrics, University of Melbourne, Melbourne, Victoria, Australia; and
| | | | | | | | | | | | | |
Collapse
|
44
|
Krenz M, Baines C, Kalogeris T, Korthuis R. Cell Survival Programs and Ischemia/Reperfusion: Hormesis, Preconditioning, and Cardioprotection. ACTA ACUST UNITED AC 2013. [DOI: 10.4199/c00090ed1v01y201309isp044] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
|
45
|
Sun J, Nguyen T, Kohr MJ, Murphy E. Cardioprotective Role of Caveolae in Ischemia-Reperfusion Injury. ACTA ACUST UNITED AC 2013; 3. [PMID: 26989575 DOI: 10.4172/2161-1025.1000114] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Caveolae are flask-like invaginations of the plasma membrane enriched in cholesterol, sphingolipids, the marker protein caveolin and the coat protein cavin. In cardiomyocytes, multiple signaling molecules are concentrated and organized within the caveolae to mediate signaling transduction. Recent studies suggest that caveolae and caveolae-associated signaling molecules play an important role in protecting the myocardium against ischemia-reperfusion injury. For example, cardiac-specific overexpression of caveolin-3 has been shown to lead to protection that mimics ischemic preconditioning, while the knockout of caveolin-3 abolished ischemic preconditioning. In this review, we discuss the molecular mechanisms and signaling pathways that are involved in caveolae-mediated cardioprotection, and examine the potential for caveolae as a therapeutic target for pharmaceutical intervention to treat cardiovascular disease.
Collapse
Affiliation(s)
- Junhui Sun
- Systems Biology Center, National Heart Lung and Blood Institute, National Institutes of Health, Bethesda, MD 20892, USA
| | - Tiffany Nguyen
- Systems Biology Center, National Heart Lung and Blood Institute, National Institutes of Health, Bethesda, MD 20892, USA
| | - Mark J Kohr
- Systems Biology Center, National Heart Lung and Blood Institute, National Institutes of Health, Bethesda, MD 20892, USA; Department of Pathology, Johns Hopkins Medical Institutions, 720 Rutland Avenue, Baltimore, MD 21205, USA
| | - Elizabeth Murphy
- Systems Biology Center, National Heart Lung and Blood Institute, National Institutes of Health, Bethesda, MD 20892, USA
| |
Collapse
|
46
|
Campos JC, Gomes KMS, Ferreira JCB. Impact of exercise training on redox signaling in cardiovascular diseases. Food Chem Toxicol 2013; 62:107-19. [PMID: 23978413 DOI: 10.1016/j.fct.2013.08.035] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2013] [Revised: 08/05/2013] [Accepted: 08/18/2013] [Indexed: 02/07/2023]
Abstract
Reactive oxygen and nitrogen species regulate a wide array of signaling pathways that governs cardiovascular physiology. However, oxidant stress resulting from disrupted redox signaling has an adverse impact on the pathogenesis and progression of cardiovascular diseases. In this review, we address how redox signaling and oxidant stress affect the pathophysiology of cardiovascular diseases such as ischemia-reperfusion injury, hypertension and heart failure. We also summarize the benefits of exercise training in tackling the hyperactivation of cellular oxidases and mitochondrial dysfunction seen in cardiovascular diseases.
Collapse
Affiliation(s)
- Juliane C Campos
- Department of Anatomy, Institute of Biomedical Sciences, University of Sao Paulo, Sao Paulo, Brazil
| | | | | |
Collapse
|
47
|
Evangelista AM, Deschamps AM, Liu D, Raghavachari N, Murphy E. miR-222 contributes to sex-dimorphic cardiac eNOS expression via ets-1. Physiol Genomics 2013; 45:493-8. [PMID: 23632416 DOI: 10.1152/physiolgenomics.00008.2013] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
It is well recognized that there is sex-dimorphic expression of mRNA and protein in the heart; however, the underlying mechanism is poorly understood. Endothelial nitric oxide synthase (eNOS) is an important regulator of cardiac function, and the expression levels of eNOS differ between male and female hearts. The aim of this study was to examine whether expression of specific microRNA (miRNA, miR) in males and females contributes to changes in the expression of eNOS. miRNA was extracted from the myocardium of male and female C57BL/6 mice and subjected to an Affymetrix miRNA array. Decreased expression of miR-222 was discovered in females and confirmed by qRT-PCR from whole heart or isolated cardiomyocytes. The transcription factor V-ets erythroblastosis virus E26 oncogene homolog-1 (ets-1) was identified as a potential target of miR-222 using TargetScan, and fivefold increased ets-1 protein expression in females was confirmed by Western blot. Targeting of ets-1 by miR-222 was determined in HEK293 cells overexpressing luciferase under regulation of either the ets-1 3'-UTR, a null 3'-UTR control, or a scrambled ets-1 3'-UTR and treated with a small molecule miR-222 mimic or inhibitor. Additionally qRT-PCR confirmed that mRNA levels of the ets-1 transcriptional target, eNOS, were 25% higher in females. Compared with untreated myocyte controls, 50% inhibition of eNOS expression was achieved by treatment with a miR-222 mimic, compared with a 25% increase due to miR-222 inhibitor. Our findings indicate that sex-dependent miR-222 regulation alters the expression of the cardiac regulatory protein eNOS.
Collapse
Affiliation(s)
- Alicia M Evangelista
- Systems Biology Center, National Heart, Lung and Blood Institute, National Institutes of Health, Bethesda, Maryland, USA
| | | | | | | | | |
Collapse
|
48
|
Sun J, Aponte AM, Kohr MJ, Tong G, Steenbergen C, Murphy E. Essential role of nitric oxide in acute ischemic preconditioning: S-nitros(yl)ation versus sGC/cGMP/PKG signaling? Free Radic Biol Med 2013; 54:105-12. [PMID: 22989471 PMCID: PMC3539417 DOI: 10.1016/j.freeradbiomed.2012.09.005] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/06/2012] [Revised: 08/31/2012] [Accepted: 09/10/2012] [Indexed: 12/28/2022]
Abstract
Nitric oxide (NO) plays an important role in acute ischemic preconditioning (IPC). In addition to activating soluble guanylyl cyclase (sGC)/cyclic guanosine monophosphate (cGMP)/protein kinase G (PKG) signaling pathways, NO-mediated protein S-nitros(yl)ation (SNO) has been recently shown to play an essential role in cardioprotection against ischemia-reperfusion (I/R) injury. In our previous studies, we have shown that IPC-induced cardioprotection could be blocked by treatment with either N-nitro-L-arginine methyl ester (L-NAME, a constitutive NO synthase inhibitor) or ascorbate (a reducing agent to decompose SNO). To clarify NO-mediated sGC/cGMP/PKG-dependent or -independent (i.e., SNO) signaling involved in IPC-induced cardioprotection, mouse hearts were Langendorff-perfused in the dark to prevent SNO decomposition by light exposure. Treatment with 1H-[1,2,4]oxadiazolo[4,3-a]quinoxalin-1-one (ODQ, a highly selective inhibitor of sGC) or KT5823 (a potent and selective inhibitor of PKG) did not abolish IPC-induced acute protection, suggesting that the sGC/cGMP/PKG signaling pathway does not play an important role in NO-mediated cardioprotective signaling during acute IPC. In addition, treatment with ODQ in IPC hearts provided an additional protective effect on functional recovery, in parallel with a higher SNO level in these ODQ+IPC hearts. In conclusion, these results suggest that the protective effect of NO is not related primarily to activation of the sGC/cGMP/PKG signaling pathway, but rather through SNO signaling in IPC-induced acute cardioprotection.
Collapse
Affiliation(s)
- Junhui Sun
- Systems Biology Center, National Heart Lung and Blood Institute, National Institutes of Health, Bethesda, MD 20892, USA.
| | | | | | | | | | | |
Collapse
|
49
|
Schulz R, Ferdinandy P. Does nitric oxide signaling differ in pre- and post-conditioning? Importance of S-nitrosylation vs. protein kinase G activation. Free Radic Biol Med 2013; 54:113-5. [PMID: 23089225 DOI: 10.1016/j.freeradbiomed.2012.10.547] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
|
50
|
Fridolfsson HN, Kawaraguchi Y, Ali SS, Panneerselvam M, Niesman IR, Finley JC, Kellerhals SE, Migita MY, Okada H, Moreno AL, Jennings M, Kidd MW, Bonds JA, Balijepalli RC, Ross RS, Patel PM, Miyanohara A, Chen Q, Lesnefsky EJ, Head BP, Roth DM, Insel PA, Patel HH. Mitochondria-localized caveolin in adaptation to cellular stress and injury. FASEB J 2012; 26:4637-49. [PMID: 22859372 DOI: 10.1096/fj.12-215798] [Citation(s) in RCA: 79] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
We show here that the apposition of plasma membrane caveolae and mitochondria (first noted in electron micrographs >50 yr ago) and caveolae-mitochondria interaction regulates adaptation to cellular stress by modulating the structure and function of mitochondria. In C57Bl/6 mice engineered to overexpress caveolin specifically in cardiac myocytes (Cav-3 OE), localization of caveolin to mitochondria increases membrane rigidity (4.2%; P<0.05), tolerance to calcium, and respiratory function (72% increase in state 3 and 23% increase in complex IV activity; P<0.05), while reducing stress-induced generation of reactive oxygen species (by 20% in cellular superoxide and 41 and 28% in mitochondrial superoxide under states 4 and 3, respectively; P<0.05) in Cav-3 OE vs. TGneg. By contrast, mitochondrial function is abnormal in caveolin-knockout mice and Caenorhabditis elegans with null mutations in caveolin (60% increase free radical in Cav-2 C. elegans mutants; P<0.05). In human colon cancer cells, mitochondria with increased caveolin have a 30% decrease in apoptotic stress (P<0.05), but cells with disrupted mitochondria-caveolin interaction have a 30% increase in stress response (P<0.05). Targeted gene transfer of caveolin to mitochondria in C57Bl/6 mice increases cardiac mitochondria tolerance to calcium, enhances respiratory function (increases of 90% state 4, 220% state 3, 88% complex IV activity; P<0.05), and decreases (by 33%) cardiac damage (P<0.05). Physical association and apparently the transfer of caveolin between caveolae and mitochondria is thus a conserved cellular response that confers protection from cellular damage in a variety of tissues and settings.
Collapse
Affiliation(s)
- Heidi N Fridolfsson
- Department of Anesthesiology, University of California-San Diego, La Jolla, California 92161, USA
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|