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Borodzicz-Jażdżyk S, Jażdżyk P, Łysik W, Cudnoch-Jȩdrzejewska A, Czarzasta K. Sphingolipid metabolism and signaling in cardiovascular diseases. Front Cardiovasc Med 2022; 9:915961. [PMID: 36119733 PMCID: PMC9471951 DOI: 10.3389/fcvm.2022.915961] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2022] [Accepted: 08/05/2022] [Indexed: 01/10/2023] Open
Abstract
Sphingolipids are a structural component of the cell membrane, derived from sphingosine, an amino alcohol. Its sphingoid base undergoes various types of enzymatic transformations that lead to the formation of biologically active compounds, which play a crucial role in the essential pathways of cellular signaling, proliferation, maturation, and death. The constantly growing number of experimental and clinical studies emphasizes the pivotal role of sphingolipids in the pathophysiology of cardiovascular diseases, including, in particular, ischemic heart disease, hypertension, heart failure, and stroke. It has also been proven that altering the sphingolipid metabolism has cardioprotective properties in cardiac pathologies, including myocardial infarction. Recent studies suggest that selected sphingolipids may serve as valuable biomarkers useful in the prognosis of cardiovascular disorders in clinical practice. This review aims to provide an overview of the current knowledge of sphingolipid metabolism and signaling in cardiovascular diseases.
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Affiliation(s)
- Sonia Borodzicz-Jażdżyk
- Chair and Department of Experimental and Clinical Physiology, Laboratory of Centre for Preclinical Research, Medical University of Warsaw, Warsaw, Poland
| | - Piotr Jażdżyk
- Chair and Department of Experimental and Clinical Physiology, Laboratory of Centre for Preclinical Research, Medical University of Warsaw, Warsaw, Poland
- Second Department of Psychiatry, Institute of Psychiatry and Neurology in Warsaw, Warsaw, Poland
| | - Wojciech Łysik
- Chair and Department of Experimental and Clinical Physiology, Laboratory of Centre for Preclinical Research, Medical University of Warsaw, Warsaw, Poland
| | - Agnieszka Cudnoch-Jȩdrzejewska
- Chair and Department of Experimental and Clinical Physiology, Laboratory of Centre for Preclinical Research, Medical University of Warsaw, Warsaw, Poland
| | - Katarzyna Czarzasta
- Chair and Department of Experimental and Clinical Physiology, Laboratory of Centre for Preclinical Research, Medical University of Warsaw, Warsaw, Poland
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Huang SY, Lu YY, Lin YK, Chen YC, Chen YA, Chung CC, Lin WS, Chen SA, Chen YJ. Ceramide modulates electrophysiological characteristics and oxidative stress of pulmonary vein cardiomyocytes. Eur J Clin Invest 2022; 52:e13690. [PMID: 34662431 DOI: 10.1111/eci.13690] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/27/2021] [Revised: 10/12/2021] [Accepted: 10/12/2021] [Indexed: 11/27/2022]
Abstract
BACKGROUND Ceramide is involved in regulating metabolism and energy expenditure, and its abnormal myocardial accumulation may contribute to heart injury or lipotoxic cardiomyopathy. Whether ceramide can modulate the electrophysiology of pulmonary veins (PVs) remains unknown. MATERIALS AND METHODS We used conventional microelectrodes to measure the electrical activity of isolated rabbit PV tissue preparations before and after treatment with various concentrations of ceramide with or without H2 O2 (2 mM), MitoQ, wortmannin or 740 YP. A whole-cell patch clamp and fluorescence imaging were used to record the ionic currents, calcium (Ca2+ ) transients, and intracellular reactive oxygen species (ROS) and sodium (Na+ ) in isolated single PV cardiomyocytes before and after ceramide (1 μM) treatment. RESULTS Ceramide (0.1, 0.3, 1 and 3 μM) reduced the beating rate of PV tissues. Furthermore, ceramide (1 μM) suppressed the 2 mM H2 O2 -induced faster PV beating rate, triggered activities and burst firings, which were further reduced by MitoQ. In the presence of wortmannin, ceramide did not change the PV beating rate. The H2 O2 -induced faster PV beating rate could be counteracted by MitoQ or wortmannin with no additive effect from the ceramide. Ceramide inhibited pPI3K. Ceramide reduced Ca2+ transients, sarcoplasmic reticulum Ca2+ contents, L-type Ca2+ currents, Na+ currents, late Na+ currents, Na+ -hydrogen exchange currents, and intracellular ROS and Na+ in PV cardiomyocytes, but did not change Na+ -Ca2+ exchange currents. CONCLUSION C2 ceramide may exert the distinctive electrophysiological effect of modulating PV activities, which may be affected by PI3K pathway-mediated oxidative stress, and might play a role in the pathogenesis of PV arrhythmogenesis.
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Affiliation(s)
- Shih-Yu Huang
- Division of Cardiac Electrophysiology, Cardiovascular Center, Cathay General Hospital, Taipei, Taiwan.,School of Medicine, College of Medicine, Fu Jen Catholic University, New Taipei City, Taiwan
| | - Yen-Yu Lu
- School of Medicine, College of Medicine, Fu Jen Catholic University, New Taipei City, Taiwan.,Division of Cardiology, Sijhih Cathay General Hospital, New Taipei City, Taiwan
| | - Yung-Kuo Lin
- Division of Cardiovascular Medicine, Department of Internal Medicine, Wan Fang Hospital, Taipei Medical University, Taipei, Taiwan.,Division of Cardiology, Department of Internal Medicine, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
| | - Yao-Chang Chen
- Department of Biomedical Engineering, National Defense Medical Center, Taipei, Taiwan
| | - Yi-Ann Chen
- Division of Nephrology, Sijhih Cathay General Hospital, New Taipei City, Taiwan
| | - Cheng-Chih Chung
- Division of Cardiovascular Medicine, Department of Internal Medicine, Wan Fang Hospital, Taipei Medical University, Taipei, Taiwan.,Division of Cardiology, Department of Internal Medicine, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
| | - Wei-Shiang Lin
- Division of Cardiology, Department of Internal Medicine, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan
| | - Shih-Ann Chen
- Division of Cardiology, Department of Medicine, Heart Rhythm Center, Taipei Veterans General Hospital, Taipei, Taiwan.,Cardiovascular Center, Taichung Veterans General Hospital, Taichung, Taiwan
| | - Yi-Jen Chen
- Division of Cardiovascular Medicine, Department of Internal Medicine, Wan Fang Hospital, Taipei Medical University, Taipei, Taiwan.,Graduate Institute of Clinical Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan.,Cardiovascular Research Center, Wan Fang Hospital, Taipei Medical University, Taipei, Taiwan
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Abstract
PURPOSE OF REVIEW Total ceramide levels in cardiac tissue relate to cardiac dysfunction in animal models. However, emerging evidence suggests that the fatty acyl chain length of ceramides also impacts their relationship to cardiac function. This review explores evidence regarding the relationship between ceramides and left ventricular dysfunction and heart failure. It further explores possible mechanisms underlying these relationships. RECENT FINDINGS In large, community-based cohorts, a higher ratio of specific plasma ceramides, C16 : 0/C24 : 0, related to worse left ventricular dysfunction. Increased left ventricular mass correlated with plasma C16 : 0/C24 : 0, but this relationship became nonsignificant after adjustment for multiple comparisons. Decreased left atrial function and increased left atrial size also related to C16 : 0/C24 : 0. Furthermore, increased incident heart failure, overall cardiovascular disease (CVD) mortality and all-cause mortality were associated with higher C16 : 0/C24 : 0 (or lower C24 : 0/C16 : 0). Finally, a number of possible biological mechanisms are outlined supporting the link between C16 : 0/C24 : 0 ceramides, ceramide signalling and CVD. SUMMARY High cardiac levels of total ceramides are noted in heart failure. In the plasma, C16 : 0/C24 : 0 ceramides may be a valuable biomarker of preclinical left ventricular dysfunction, remodelling, heart failure and mortality. Continued exploration of the mechanisms underlying these profound relationships may help develop specific lipid modulators to combat cardiac dysfunction and heart failure.
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Affiliation(s)
- Lauren K. Park
- Department of Medicine, Division of Cardiology, Washington University School of Medicine, Saint Louis, Missouri
| | - Valene Garr-Barry
- Department of Medicine, Division of Cardiology, Washington University School of Medicine, Saint Louis, Missouri
| | - Juan Hong
- Department of Medicine, Division of Cardiology, Washington University School of Medicine, Saint Louis, Missouri
| | - John Heebink
- Department of Medicine, Division of Cardiology, Washington University School of Medicine, Saint Louis, Missouri
| | - Rajan Sah
- Department of Medicine, Division of Cardiology, Washington University School of Medicine, Saint Louis, Missouri
| | - Linda R. Peterson
- Department of Medicine, Division of Cardiology, Washington University School of Medicine, Saint Louis, Missouri
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Anselmo A, Frank D, Papa L, Viviani Anselmi C, Di Pasquale E, Mazzola M, Panico C, Clemente F, Soldani C, Pagiatakis C, Hinkel R, Thalmann R, Kozlik-Feldmann R, Miragoli M, Carullo P, Vacchiano M, Chaves-Sanjuan A, Santo N, Losi MA, Ferrari MC, Puca AA, Christiansen V, Seoudy H, Freitag-Wolf S, Frey N, Dempfle A, Mercola M, Esposito G, Briguori C, Kupatt C, Condorelli G. Myocardial hypoxic stress mediates functional cardiac extracellular vesicle release. Eur Heart J 2021; 42:2780-2792. [PMID: 34104945 DOI: 10.1093/eurheartj/ehab247] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/23/2020] [Revised: 05/25/2020] [Accepted: 04/13/2021] [Indexed: 12/12/2022] Open
Abstract
AIMS Increased shedding of extracellular vesicles (EVs)-small, lipid bilayer-delimited particles with a role in paracrine signalling-has been associated with human pathologies, e.g. atherosclerosis, but whether this is true for cardiac diseases is unknown. METHODS AND RESULTS Here, we used the surface antigen CD172a as a specific marker of cardiomyocyte (CM)-derived EVs; the CM origin of CD172a+ EVs was supported by their content of cardiac-specific proteins and heart-enriched microRNAs. We found that patients with aortic stenosis, ischaemic heart disease, or cardiomyopathy had higher circulating CD172a+ cardiac EV counts than did healthy subjects. Cellular stress was a major determinant of EV release from CMs, with hypoxia increasing shedding in in vitro and in vivo experiments. At the functional level, EVs isolated from the supernatant of CMs derived from human-induced pluripotent stem cells and cultured in a hypoxic atmosphere elicited a positive inotropic response in unstressed CMs, an effect we found to be dependent on an increase in the number of EVs expressing ceramide on their surface. Of potential clinical relevance, aortic stenosis patients with the highest counts of circulating cardiac CD172a+ EVs had a more favourable prognosis for transcatheter aortic valve replacement than those with lower counts. CONCLUSION We identified circulating CD172a+ EVs as cardiac derived, showing their release and function and providing evidence for their prognostic potential in aortic stenosis patients.
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Affiliation(s)
- Achille Anselmo
- IRCCS-Humanitas Research Hospital, Via Manzoni 56, 20089 Rozzano (MI), Italy
| | - Derk Frank
- German Centre for Cardiovascular Research (DZHK), Hamburg/Kiel/Lübeck Partner Site, Arnold-Heller-Str.3, 24105 Kiel, Germany
- Department of Internal Medicine III (Cardiology and Angiology), University Hospital Schleswig-Holstein, Arnold-Heller-Str.3, 24105 Kiel, Germany
| | - Laura Papa
- IRCCS-Humanitas Research Hospital, Via Manzoni 56, 20089 Rozzano (MI), Italy
| | | | - Elisa Di Pasquale
- IRCCS-Humanitas Research Hospital, Via Manzoni 56, 20089 Rozzano (MI), Italy
- Institute of Genetic and Biomedical Research, National Research Council of Italy, Arnold-Heller-Str.3, 24105 Milan, Italy
| | - Marta Mazzola
- IRCCS-Humanitas Research Hospital, Via Manzoni 56, 20089 Rozzano (MI), Italy
- Department of Medicine and Surgery, University of Parma, Via Gramsci 14,43126 Parma, Italy
| | - Cristina Panico
- IRCCS-Humanitas Research Hospital, Via Manzoni 56, 20089 Rozzano (MI), Italy
| | - Francesca Clemente
- IRCCS-Humanitas Research Hospital, Via Manzoni 56, 20089 Rozzano (MI), Italy
| | - Cristiana Soldani
- IRCCS-Humanitas Research Hospital, Via Manzoni 56, 20089 Rozzano (MI), Italy
| | | | - Rabea Hinkel
- DZHK, Munich Partner Site, Ismaninger Str. 22, 81675 Munich, Germany
- Medizinische Klinik und Poliklinik l, University Clinic Rechts der Isar, Technical University of Munich, Ismaninger Str. 22, 81675 Munich, Germany
| | - Ruth Thalmann
- DZHK, Munich Partner Site, Ismaninger Str. 22, 81675 Munich, Germany
- Medizinische Klinik und Poliklinik l, University Clinic Rechts der Isar, Technical University of Munich, Ismaninger Str. 22, 81675 Munich, Germany
| | - Reiner Kozlik-Feldmann
- German Centre for Cardiovascular Research (DZHK), Hamburg/Kiel/Lübeck Partner Site, Arnold-Heller-Str.3, 24105 Kiel, Germany
- Department of Internal Medicine III (Cardiology and Angiology), University Hospital Schleswig-Holstein, Arnold-Heller-Str.3, 24105 Kiel, Germany
- Department of Paediatric Cardiology, University Medical Centre Hamburg-Eppendorf, Martinistraße 52, 20251 Hamburg, Germany
| | - Michele Miragoli
- IRCCS-Humanitas Research Hospital, Via Manzoni 56, 20089 Rozzano (MI), Italy
- Department of Medicine and Surgery, University of Parma, Via Gramsci 14,43126 Parma, Italy
| | - Pierluigi Carullo
- IRCCS-Humanitas Research Hospital, Via Manzoni 56, 20089 Rozzano (MI), Italy
- Institute of Genetic and Biomedical Research, National Research Council of Italy, Arnold-Heller-Str.3, 24105 Milan, Italy
| | - Marco Vacchiano
- IRCCS-Humanitas Research Hospital, Via Manzoni 56, 20089 Rozzano (MI), Italy
| | - Antonio Chaves-Sanjuan
- Centro di Ricerche Pediatriche "R.E. Invernizzi", Università di Milano, Via Celoria 26, 20133 Milan, Italy
| | - Nadia Santo
- Bio-imaging Facility Unitech Nolimits, University of Milan, Via Golgi 19, 20133 Milan, Italy
| | - Maria Angela Losi
- Department of Advanced Biomedical Sciences, University of Naples Federico II, Via S. Pansini 5, 80131 Naples, Italy
| | | | - Annibale Alessandro Puca
- Ageing Unit, IRCCS MultiMedica, Via G. Fantoli 16/15, 20138 Milan, Italy
- Department of Medicine, Surgery and Dentistry, "ScuolaMedicaSalernitana" University of Salerno, Via S. Allende, 84081 Baronissi (SA), Italy
| | - Vincent Christiansen
- Department of Internal Medicine III (Cardiology and Angiology), University Hospital Schleswig-Holstein, Arnold-Heller-Str.3, 24105 Kiel, Germany
| | - Hatim Seoudy
- German Centre for Cardiovascular Research (DZHK), Hamburg/Kiel/Lübeck Partner Site, Arnold-Heller-Str.3, 24105 Kiel, Germany
- Department of Internal Medicine III (Cardiology and Angiology), University Hospital Schleswig-Holstein, Arnold-Heller-Str.3, 24105 Kiel, Germany
| | - Sandra Freitag-Wolf
- Institute of Medical Informatics and Statistics, Kiel University, Brunswiker Str. 10, 24105 Kiel, Germany
| | - Norbert Frey
- German Centre for Cardiovascular Research (DZHK), Hamburg/Kiel/Lübeck Partner Site, Arnold-Heller-Str.3, 24105 Kiel, Germany
- Department of Internal Medicine III (Cardiology and Angiology), University Hospital Schleswig-Holstein, Arnold-Heller-Str.3, 24105 Kiel, Germany
| | - Astrid Dempfle
- Institute of Medical Informatics and Statistics, Kiel University, Brunswiker Str. 10, 24105 Kiel, Germany
| | - Mark Mercola
- Cardiovascular Institute and Department of Medicine, Stanford University, 891 Campus Drive, 94305 Palo Alto (CA), USA
| | - Giovanni Esposito
- Department of Advanced Biomedical Sciences, University of Naples Federico II, Via S. Pansini 5, 80131 Naples, Italy
| | - Carlo Briguori
- Interventional Cardiology Unit, Mediterranea Cardiocentro, Via Orazio 2, 80121 Naples, Italy
| | - Christian Kupatt
- DZHK, Munich Partner Site, Ismaninger Str. 22, 81675 Munich, Germany
- Medizinische Klinik und Poliklinik l, University Clinic Rechts der Isar, Technical University of Munich, Ismaninger Str. 22, 81675 Munich, Germany
| | - Gianluigi Condorelli
- IRCCS-Humanitas Research Hospital, Via Manzoni 56, 20089 Rozzano (MI), Italy
- Institute of Genetic and Biomedical Research, National Research Council of Italy, Arnold-Heller-Str.3, 24105 Milan, Italy
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Delgado C, Gomez AM, Samia El Hayek M, Ruiz-Hurtado G, Pereira L. Gender-Dependent Alteration of Ca 2+ and TNFα Signaling in db/ db Mice, an Obesity-Linked Type 2 Diabetic Model. Front Physiol 2019; 10:40. [PMID: 30792662 PMCID: PMC6374335 DOI: 10.3389/fphys.2019.00040] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2018] [Accepted: 01/14/2019] [Indexed: 01/11/2023] Open
Abstract
Cardiovascular complications are the primary death cause in type 2 diabetes, where inflammation can play a role. We, and others, have previously shown that, in diabetic cardiomyopathy, cardiac dysfunction is associated with Ca2+ mishandling. It is possible that diabetic cardiomyopathy differently affects men and women, as the latter present higher risk to develop heart failure and a higher plasmatic level of the pro-inflammatory cytokine, tumor necrosis factor alpha (TNFα), than men. However, the gender-dependent regulation of Ca2+ signaling in diabetes and its relationship with TNFα signaling are still unclear. Here, we analyzed TNFα signaling pathway and its role in Ca2+ signaling dysfunction in male and female rodent models of type 2 diabetes linked to obesity (db/db mice) using confocal microscopy in freshly isolated cardiomyocytes. TNFα increased [Ca2+]i transient amplitude and accelerated its decay without affecting SR Ca2+ load or Ca2+ spark frequency in cells from control mice. All TNFα effects on Ca2+ handling were prevented by the inhibition of the ceramidase and the phospholipase A2 (PLA2). While the plasmatic level of TNFα was similar in male and female db/db mice, only male db/db hearts over-expressed both TNFα converting enzyme (TACE) and the protective TNFα receptors 2 (TNF-R2). TNFα receptor 1 (TNF-R1) expression, involved in negative inotropic response of TNFα, was unchanged in both male and female db/db mice compared to controls. We found that male db/db mice cardiomyocytes presented a decrease in [Ca2+]i transient amplitude associated to a drop of sarcoplasmic reticulum Ca2+ load, not seen in female db/db mice. Interestingly, sustained incubation with TNFα did not restored Ca2+ signaling alteration observed in male db/db mice but still induces an increase in Ca2+ spark frequency as seen in control littermates. In cardiomyocytes from female db/db mice, TNFα had no visible effects on Ca2+ handling. In conclusion, our study shows that the alteration of Ca2+ signaling and TNFα, seen in db/db mice, is gender specific presenting an increase in TNFα cardio-protective pathway in male mice.
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Affiliation(s)
- Carmen Delgado
- Instituto de Investigaciones Biomédicas "Alberto Sols" (CSIC-UAM)/CIBER-CV, Madrid, Spain
| | - Ana-Maria Gomez
- INSERM UMR-S 1180, University of Paris-Sud, University of Paris-Saclay, Châtenay-Malabry, France
| | - Magali Samia El Hayek
- INSERM UMR-S 1180, University of Paris-Sud, University of Paris-Saclay, Châtenay-Malabry, France
| | - Gema Ruiz-Hurtado
- Cardiorenal Translational Laboratory, Institute of Research i+12, Hospital Universitario 12 de Octubre/CIBER-CV, Madrid, Spain
| | - Laetitia Pereira
- INSERM UMR-S 1180, University of Paris-Sud, University of Paris-Saclay, Châtenay-Malabry, France
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Egom EEA, Bae JS, Capel R, Richards M, Ke Y, Pharithi RB, Maher V, Kruzliak P, Lei M. Effect of sphingosine-1-phosphate on L-type calcium current and Ca2+ transient in rat ventricular myocytes. Mol Cell Biochem 2016; 419:83-92. [DOI: 10.1007/s11010-016-2752-8] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2015] [Accepted: 06/21/2016] [Indexed: 01/05/2023]
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Simon JN, Chowdhury SAK, Warren CM, Sadayappan S, Wieczorek DF, Solaro RJ, Wolska BM. Ceramide-mediated depression in cardiomyocyte contractility through PKC activation and modulation of myofilament protein phosphorylation. Basic Res Cardiol 2014; 109:445. [PMID: 25280528 DOI: 10.1007/s00395-014-0445-6] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/29/2013] [Revised: 09/25/2014] [Accepted: 09/26/2014] [Indexed: 12/16/2022]
Abstract
Although ceramide accumulation in the heart is considered a major factor in promoting apoptosis and cardiac disorders, including heart failure, lipotoxicity and ischemia-reperfusion injury, little is known about ceramide's role in mediating changes in contractility. In the present study, we measured the functional consequences of acute exposure of isolated field-stimulated adult rat cardiomyocytes to C6-ceramide. Exogenous ceramide treatment depressed the peak amplitude and the maximal velocity of shortening without altering intracellular calcium levels or kinetics. The inactive ceramide analog C6-dihydroceramide had no effect on myocyte shortening or [Ca(2+)]i transients. Experiments testing a potential role for C6-ceramide-mediated effects on activation of protein kinase C (PKC) demonstrated evidence for signaling through the calcium-independent isoform, PKCε. We employed 2-dimensional electrophoresis and anti-phospho-peptide antibodies to test whether treatment of the cardiomyocytes with C6-ceramide altered myocyte shortening via PKC-dependent phosphorylation of myofilament proteins. Compared to controls, myocytes treated with ceramide exhibited increased phosphorylation of myosin binding protein-C (cMyBP-C), specifically at Ser273 and Ser302, and troponin I (cTnI) at sites apart from Ser23/24, which could be attenuated with PKC inhibition. We conclude that the altered myofilament response to calcium resulting from multiple sites of PKC-dependent phosphorylation contributes to contractile dysfunction that is associated with cardiac diseases in which elevations in ceramides are present.
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Affiliation(s)
- Jillian N Simon
- Department of Physiology and Biophysics and Center for Cardiovascular Research, College of Medicine, University of Illinois, Chicago, IL, 60612, USA
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Lipid metabolites and their differential pro-arrhythmic profiles: of importance in the development of a new anti-arrhythmic pharmacology. Mol Cell Biochem 2014; 393:191-7. [DOI: 10.1007/s11010-014-2060-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2013] [Accepted: 04/11/2014] [Indexed: 01/12/2023]
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Radin MJ, Holycross BJ, Dumitrescu C, Kelley R, Altschuld RA. Leptin modulates the negative inotropic effect of interleukin-1beta in cardiac myocytes. Mol Cell Biochem 2008; 315:179-84. [PMID: 18535786 DOI: 10.1007/s11010-008-9805-6] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2008] [Accepted: 05/23/2008] [Indexed: 02/07/2023]
Abstract
Interleukin-1beta (IL-1beta) is a potent negative inotrope implicated in the functional abnormalities of heart failure. Because the adipokine, leptin, protects against some of the cardiovascular effects of endotoxin, we hypothesized that leptin may modulate the cardiosuppressive effects of IL-1beta in isolated cardiomyocytes. Ventricular cardiac myocytes isolated from adult male Sprague Dawley rats were analyzed simultaneously for electrically stimulated contractility and calcium transients following 30 min exposure to IL-1beta (10 ng/ml) with or without 60 min pretreatment with leptin (25 ng/ml). IL-1beta decreased cell shortening, depressed maximal velocities of shortening and relengthening, and prolonged the time to 90% relaxation. The change in fura2-AM fluorescence ratio amplitude (Delta[Ca(2+)]) was significantly depressed and the time to return to baseline [Ca(2+)] was prolonged. The negative inotropic effects of IL-1beta were blocked by the neutral sphingomyelinase inhibitor Manumycin A (5 microM) or the ceramidase inhibitor N-oleoyl ethanolamine (1 microM). Prior exposure of myocytes to leptin blocked IL-1beta-induced cardiosuppression in conjunction with a blunting of IL-1beta stimulated ceramide accumulation. These data suggest that leptin may modulate IL-1beta signaling through the sphingolipid signaling pathway in cardiomyocytes.
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Affiliation(s)
- M Judith Radin
- Department of Veterinary Biosciences, The Ohio State University, 1925 Coffey Road, Columbus, OH 43210, USA.
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Chakraborti S, Das S, Kar P, Ghosh B, Samanta K, Kolley S, Ghosh S, Roy S, Chakraborti T. Calcium signaling phenomena in heart diseases: a perspective. Mol Cell Biochem 2006; 298:1-40. [PMID: 17119849 DOI: 10.1007/s11010-006-9355-8] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2006] [Accepted: 10/12/2006] [Indexed: 01/24/2023]
Abstract
Ca(2+) is a major intracellular messenger and nature has evolved multiple mechanisms to regulate free intracellular (Ca(2+))(i) level in situ. The Ca(2+) signal inducing contraction in cardiac muscle originates from two sources. Ca(2+) enters the cell through voltage dependent Ca(2+) channels. This Ca(2+) binds to and activates Ca(2+) release channels (ryanodine receptors) of the sarcoplasmic reticulum (SR) through a Ca(2+) induced Ca(2+) release (CICR) process. Entry of Ca(2+) with each contraction requires an equal amount of Ca(2+) extrusion within a single heartbeat to maintain Ca(2+) homeostasis and to ensure relaxation. Cardiac Ca(2+) extrusion mechanisms are mainly contributed by Na(+)/Ca(2+) exchanger and ATP dependent Ca(2+) pump (Ca(2+)-ATPase). These transport systems are important determinants of (Ca(2+))(i) level and cardiac contractility. Altered intracellular Ca(2+) handling importantly contributes to impaired contractility in heart failure. Chronic hyperactivity of the beta-adrenergic signaling pathway results in PKA-hyperphosphorylation of the cardiac RyR/intracellular Ca(2+) release channels. Numerous signaling molecules have been implicated in the development of hypertrophy and failure, including the beta-adrenergic receptor, protein kinase C, Gq, and the down stream effectors such as mitogen activated protein kinases pathways, and the Ca(2+) regulated phosphatase calcineurin. A number of signaling pathways have now been identified that may be key regulators of changes in myocardial structure and function in response to mutations in structural components of the cardiomyocytes. Myocardial structure and signal transduction are now merging into a common field of research that will lead to a more complete understanding of the molecular mechanisms that underlie heart diseases. Recent progress in molecular cardiology makes it possible to envision a new therapeutic approach to heart failure (HF), targeting key molecules involved in intracellular Ca(2+) handling such as RyR, SERCA2a, and PLN. Controlling these molecular functions by different agents have been found to be beneficial in some experimental conditions.
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Affiliation(s)
- Sajal Chakraborti
- Department of Biochemistry and Biophysics, University of Kalyani, Kalyani, 741235, West Bengal, India.
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Chapman H, Ramström C, Korhonen L, Laine M, Wann KT, Lindholm D, Pasternack M, Törnquist K. Downregulation of the HERG (KCNH2) K+ channel by ceramide: evidence for ubiquitin-mediated lysosomal degradation. J Cell Sci 2005; 118:5325-34. [PMID: 16263765 DOI: 10.1242/jcs.02635] [Citation(s) in RCA: 55] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
The HERG (KCNH2) potassium channel underlies the rapid component of the delayed rectifier current (Ikr), a current contributing to the repolarisation of the cardiac action potential. Mutations in HERG can cause the hereditary forms of the short-QT and long-QT syndromes, predisposing to ventricular arrhythmias and sudden cardiac death. HERG is expressed mainly in the cell membrane of cardiac myocytes, but has also been identified in cell membranes of a range of other cells, including smooth muscle and neurones. The mechanisms regulating the surface expression have however not yet been elucidated. Here we show, using stable HERG-expressing HEK 293 cells, that ceramide evokes a time-dependent decrease in HERG current which was not attributable to a change in gating properties of the channel. Surface expression of the HERG channel protein was reduced by ceramide as shown by biotinylation of surface proteins, western blotting and immunocytochemistry. The rapid decline in HERG protein after ceramide stimulation was due to protein ubiquitylation and its association with lysosomes. The results demonstrate that the surface expression of HERG is strictly regulated, and that ceramide modifies HERG currents and targets the protein for lysosomal degradation.
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Affiliation(s)
- Hugh Chapman
- Minerva Foundation Institute for Medical Research, Biomedicum Helsinki, Haartmaninkatu 8, FI-00290, Helsinki, Finland
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Alewijnse AE, Peters SLM, Michel MC. Cardiovascular effects of sphingosine-1-phosphate and other sphingomyelin metabolites. Br J Pharmacol 2004; 143:666-84. [PMID: 15504747 PMCID: PMC1575924 DOI: 10.1038/sj.bjp.0705934] [Citation(s) in RCA: 112] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
Upon various stimuli, cells metabolize sphingomyelin from the cellular plasma membrane to form sphingosylphosphorylcholine (SPC) or ceramide. The latter can be further metabolized to sphingosine and then sphingosine-1-phosphate (S1P). Apart from local formation, S1P and SPC are major constituents of blood plasma. All four sphingomyelin metabolites (SMM) can act upon intracellular targets, and at least S1P and probably also SPC can additionally act upon G-protein-coupled receptors. While the molecular identity of the SPC receptors remains unclear, several subtypes of S1P receptors have been cloned and their distribution in cardiovascular tissues is described. In the heart SMM can alter intracellular Ca(2+) release, particularly via the ryanodine receptor, and conductance of various ion channels in the plasma membrane, particularly I(K(Ach)). While the various SMM differ somewhat in their effects, the above alterations of ion homeostasis result in reduced cardiac function in most cases, and ceramide and/or sphingosine may be the mediators of the negative inotropic effects of tumour necrosis factor. In the vasculature, SMM mainly act as acute vasoconstrictors in most vessels, but ceramide can be a vasodilator. SMM-induced vasoconstriction involves mobilization of Ca(2+) from intracellular stores, influx of extracellular Ca(2+) via L-type channels and activation of a rho-kinase. Extended exposure to SMM, particularly S1P, promotes several stages of the angiogenic process like endothelial cell activation, migration, proliferation, tube formation and vascular maturation. We propose that SMM are an important class of endogenous modulators of cardiovascular function.
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Affiliation(s)
- Astrid E Alewijnse
- Department of Pharmacology and Pharmacotherapy, University of Amsterdam, The Netherlands
| | - Stephan L M Peters
- Department of Pharmacology and Pharmacotherapy, University of Amsterdam, The Netherlands
| | - Martin C Michel
- Department of Pharmacology and Pharmacotherapy, University of Amsterdam, The Netherlands
- Author for correspondence:
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