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Zuo W, Liu N, Zeng Y, Liu Y, Li B, Wu K, Xiao Y, Liu Q. CD38: A Potential Therapeutic Target in Cardiovascular Disease. Cardiovasc Drugs Ther 2020; 35:815-828. [PMID: 32472237 DOI: 10.1007/s10557-020-07007-8] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Substantial research has demonstrated the association between cardiovascular disease and the dysregulation of intracellular calcium, ageing, reduction in nicotinamide adenine dinucleotide NAD+ content, and decrease in sirtuin activity. CD38, which comprises the soluble type, type II, and type III, is the main NADase in mammals. This molecule catalyses the production of cyclic adenosine diphosphate ribose (cADPR), nicotinic acid adenine dinucleotide phosphate (NAADP), and adenosine diphosphate ribose (ADPR), which stimulate the release of Ca2+, accompanied by NAD+ consumption and decreased sirtuin activity. Therefore, the relationship between cardiovascular disease and CD38 has been attracting increased attention. In this review, we summarize the structure, regulation, function, targeted drug development, and current research on CD38 in the cardiac context. More importantly, we provide original views about the as yet elusive mechanisms of CD38 action in certain cardiovascular disease models. Based on our review, we predict that CD38 may serve as a novel therapeutic target in cardiovascular disease in the future.
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Affiliation(s)
- Wanyun Zuo
- Department of Cardiovascular Medicine, The Second Xiangya Hospital of Central South University, No. 139 Middle Renmin Road, Furong District, Changsha, 410011, Hunan, China
| | - Na Liu
- Department of Cardiovascular Medicine, The Second Xiangya Hospital of Central South University, No. 139 Middle Renmin Road, Furong District, Changsha, 410011, Hunan, China
| | - Yunhong Zeng
- Department of Cardiology, Hunan Children's Hospital, No. 86 Ziyuan Road, Yuhua District, Changsha, 410007, Hunan, China
| | - Yaozhong Liu
- Department of Cardiovascular Medicine, The Second Xiangya Hospital of Central South University, No. 139 Middle Renmin Road, Furong District, Changsha, 410011, Hunan, China
| | - Biao Li
- Department of Cardiovascular Medicine, The Second Xiangya Hospital of Central South University, No. 139 Middle Renmin Road, Furong District, Changsha, 410011, Hunan, China
| | - Keke Wu
- Department of Cardiovascular Medicine, The Second Xiangya Hospital of Central South University, No. 139 Middle Renmin Road, Furong District, Changsha, 410011, Hunan, China
| | - Yunbin Xiao
- Department of Cardiology, Hunan Children's Hospital, No. 86 Ziyuan Road, Yuhua District, Changsha, 410007, Hunan, China.
| | - Qiming Liu
- Department of Cardiovascular Medicine, The Second Xiangya Hospital of Central South University, No. 139 Middle Renmin Road, Furong District, Changsha, 410011, Hunan, China.
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Gilbert G, Demydenko K, Dries E, Puertas RD, Jin X, Sipido K, Roderick HL. Calcium Signaling in Cardiomyocyte Function. Cold Spring Harb Perspect Biol 2020; 12:cshperspect.a035428. [PMID: 31308143 DOI: 10.1101/cshperspect.a035428] [Citation(s) in RCA: 52] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Rhythmic increases in intracellular Ca2+ concentration underlie the contractile function of the heart. These heart muscle-wide changes in intracellular Ca2+ are induced and coordinated by electrical depolarization of the cardiomyocyte sarcolemma by the action potential. Originating at the sinoatrial node, conduction of this electrical signal throughout the heart ensures synchronization of individual myocytes into an effective cardiac pump. Ca2+ signaling pathways also regulate gene expression and cardiomyocyte growth during development and in pathology. These fundamental roles of Ca2+ in the heart are illustrated by the prevalence of altered Ca2+ homeostasis in cardiovascular diseases. Indeed, heart failure (an inability of the heart to support hemodynamic needs), rhythmic disturbances, and inappropriate cardiac growth all share an involvement of altered Ca2+ handling. The prevalence of these pathologies, contributing to a third of all deaths in the developed world as well as to substantial morbidity makes understanding the mechanisms of Ca2+ handling and dysregulation in cardiomyocytes of great importance.
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Affiliation(s)
- Guillaume Gilbert
- Laboratory of Experimental Cardiology, Department of Cardiovascular Sciences, KU Leuven, BE3000 Leuven, Belgium
| | - Kateryna Demydenko
- Laboratory of Experimental Cardiology, Department of Cardiovascular Sciences, KU Leuven, BE3000 Leuven, Belgium
| | - Eef Dries
- Laboratory of Experimental Cardiology, Department of Cardiovascular Sciences, KU Leuven, BE3000 Leuven, Belgium
| | - Rosa Doñate Puertas
- Laboratory of Experimental Cardiology, Department of Cardiovascular Sciences, KU Leuven, BE3000 Leuven, Belgium
| | - Xin Jin
- Laboratory of Experimental Cardiology, Department of Cardiovascular Sciences, KU Leuven, BE3000 Leuven, Belgium
| | - Karin Sipido
- Laboratory of Experimental Cardiology, Department of Cardiovascular Sciences, KU Leuven, BE3000 Leuven, Belgium
| | - H Llewelyn Roderick
- Laboratory of Experimental Cardiology, Department of Cardiovascular Sciences, KU Leuven, BE3000 Leuven, Belgium
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Tapadia M, Carlessi R, Johnson S, Utikar R, Newsholme P. Lupin seed hydrolysate promotes G-protein-coupled receptor, intracellular Ca 2+ and enhanced glycolytic metabolism-mediated insulin secretion from BRIN-BD11 pancreatic beta cells. Mol Cell Endocrinol 2019; 480:83-96. [PMID: 30347229 DOI: 10.1016/j.mce.2018.10.015] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/12/2018] [Revised: 10/18/2018] [Accepted: 10/19/2018] [Indexed: 12/14/2022]
Abstract
Lupin seed proteins have been reported to exhibit hypoglycaemic effects in animals and humans following oral administration, however little is known about its mechanism of action. This study investigated the signalling pathway(s) responsible for the insulinotropic effect of the hydrolysate obtained from lupin (Lupinus angustifolius L.) seed extracts utilizing BRIN-BD11 β-cells. The extract was treated with digestive enzymes to give a hydrolysate rich in biomolecules ≤7 kDa. Cells exhibited hydrolysate induced dose-dependent stimulation of insulin secretion and enhanced intracellular Ca2+ and glucose metabolism. The stimulatory effect of the hydrolysate was potentiated by depolarizing concentrations of KCl and was blocked by inhibitors of the ATP sensitive K+ channel, Gαq protein, phospholipase C (PLC) and protein kinase C (PKC). These findings reveal a novel mechanism for lupin hydrolysate stimulated insulin secretion via Gαq mediated signal transduction (Gαq/PLC/PKC) in the β-cells. Thus, lupin hydrolysates may have potential for nutraceutical treatment in type 2 diabetes.
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Affiliation(s)
- Mrunmai Tapadia
- Western Australia School of Mines (WASM): Minerals, Energy and Chemical Engineering, Curtin University, Perth, WA, 6102, Australia
| | - Rodrigo Carlessi
- School of Pharmacy and Biomedical Sciences, Curtin Health Innovation Research Institute Biosciences, Curtin University, Perth, WA, 6102, Australia.
| | - Stuart Johnson
- School of Molecular and Life Sciences, Curtin Health Innovation Research Institute, Curtin University, Perth, WA, 6845, Australia
| | - Ranjeet Utikar
- Western Australia School of Mines (WASM): Minerals, Energy and Chemical Engineering, Curtin University, Perth, WA, 6102, Australia
| | - Philip Newsholme
- School of Pharmacy and Biomedical Sciences, Curtin Health Innovation Research Institute Biosciences, Curtin University, Perth, WA, 6102, Australia.
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Nicotinic Acid Adenine Dinucleotide Phosphate (NAADP) and Cyclic ADP-Ribose (cADPR) Mediate Ca2+ Signaling in Cardiac Hypertrophy Induced by β-Adrenergic Stimulation. PLoS One 2016; 11:e0149125. [PMID: 26959359 PMCID: PMC4784992 DOI: 10.1371/journal.pone.0149125] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2015] [Accepted: 01/27/2016] [Indexed: 01/19/2023] Open
Abstract
Ca2+ signaling plays a fundamental role in cardiac hypertrophic remodeling, but the underlying mechanisms remain poorly understood. We investigated the role of Ca2+-mobilizing second messengers, NAADP and cADPR, in the cardiac hypertrophy induced by β-adrenergic stimulation by isoproterenol. Isoproterenol induced an initial Ca2+ transients followed by sustained Ca2+ rises. Inhibition of the cADPR pathway with 8-Br-cADPR abolished only the sustained Ca2+ increase, whereas inhibition of the NAADP pathway with bafilomycin-A1 abolished both rapid and sustained phases of the isoproterenol-mediated signal, indicating that the Ca2+ signal is mediated by a sequential action of NAADP and cADPR. The sequential production of NAADP and cADPR was confirmed biochemically. The isoproterenol-mediated Ca2+ increase and cADPR production, but not NAADP production, were markedly reduced in cardiomyocytes obtained from CD38 knockout mice. CD38 knockout mice were rescued from chronic isoproterenol infusion-induced myocardial hypertrophy, interstitial fibrosis, and decrease in fractional shortening and ejection fraction. Thus, our findings indicate that β-adrenergic stimulation contributes to the development of maladaptive cardiac hypertrophy via Ca2+ signaling mediated by NAADP-synthesizing enzyme and CD38 that produce NAADP and cADPR, respectively.
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Capel RA, Bolton EL, Lin WK, Aston D, Wang Y, Liu W, Wang X, Burton RAB, Bloor-Young D, Shade KT, Ruas M, Parrington J, Churchill GC, Lei M, Galione A, Terrar DA. Two-pore Channels (TPC2s) and Nicotinic Acid Adenine Dinucleotide Phosphate (NAADP) at Lysosomal-Sarcoplasmic Reticular Junctions Contribute to Acute and Chronic β-Adrenoceptor Signaling in the Heart. J Biol Chem 2015; 290:30087-98. [PMID: 26438825 PMCID: PMC4705968 DOI: 10.1074/jbc.m115.684076] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2015] [Indexed: 12/12/2022] Open
Abstract
Ca2+-permeable type 2 two-pore channels (TPC2) are lysosomal proteins required for nicotinic acid adenine dinucleotide phosphate (NAADP)-evoked Ca2+ release in many diverse cell types. Here, we investigate the importance of TPC2 proteins for the physiology and pathophysiology of the heart. NAADP-AM failed to enhance Ca2+ responses in cardiac myocytes from Tpcn2−/− mice, unlike myocytes from wild-type (WT) mice. Ca2+/calmodulin-dependent protein kinase II inhibitors suppressed actions of NAADP in myocytes. Ca2+ transients and contractions accompanying action potentials were increased by isoproterenol in myocytes from WT mice, but these effects of β-adrenoreceptor stimulation were reduced in myocytes from Tpcn2−/− mice. Increases in amplitude of L-type Ca2+ currents evoked by isoproterenol remained unchanged in myocytes from Tpcn2−/− mice showing no loss of β-adrenoceptors or coupling mechanisms. Whole hearts from Tpcn2−/− mice also showed reduced inotropic effects of isoproterenol and a reduced tendency for arrhythmias following acute β-adrenoreceptor stimulation. Hearts from Tpcn2−/− mice chronically exposed to isoproterenol showed less cardiac hypertrophy and increased threshold for arrhythmogenesis compared with WT controls. Electron microscopy showed that lysosomes form close contacts with the sarcoplasmic reticulum (separation ∼25 nm). We propose that Ca2+-signaling nanodomains between lysosomes and sarcoplasmic reticulum dependent on NAADP and TPC2 comprise an important element in β-adrenoreceptor signal transduction in cardiac myocytes. In summary, our observations define a role for NAADP and TPC2 at lysosomal/sarcoplasmic reticulum junctions as unexpected but major contributors in the acute actions of β-adrenergic signaling in the heart and also in stress pathways linking chronic stimulation of β-adrenoceptors to hypertrophy and associated arrhythmias.
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Affiliation(s)
- Rebecca A Capel
- From the Department of Pharmacology, BHF Centre of Research Excellence, University of Oxford, Mansfield Road, Oxford OX1 3QT
| | - Emma L Bolton
- From the Department of Pharmacology, BHF Centre of Research Excellence, University of Oxford, Mansfield Road, Oxford OX1 3QT
| | - Wee K Lin
- From the Department of Pharmacology, BHF Centre of Research Excellence, University of Oxford, Mansfield Road, Oxford OX1 3QT
| | - Daniel Aston
- From the Department of Pharmacology, BHF Centre of Research Excellence, University of Oxford, Mansfield Road, Oxford OX1 3QT
| | - Yanwen Wang
- From the Department of Pharmacology, BHF Centre of Research Excellence, University of Oxford, Mansfield Road, Oxford OX1 3QT
| | - Wei Liu
- the Faculty of Life Science, University of Manchester, Manchester M13 9NT, and
| | - Xin Wang
- the Faculty of Life Science, University of Manchester, Manchester M13 9NT, and
| | - Rebecca-Ann B Burton
- the Department of Physiology, Anatomy and Genetics, Sherrington Building, University of Oxford, Sherrington Road, Oxford OX1 3PT, United Kingdom
| | - Duncan Bloor-Young
- From the Department of Pharmacology, BHF Centre of Research Excellence, University of Oxford, Mansfield Road, Oxford OX1 3QT
| | - Kai-Ting Shade
- From the Department of Pharmacology, BHF Centre of Research Excellence, University of Oxford, Mansfield Road, Oxford OX1 3QT
| | - Margarida Ruas
- From the Department of Pharmacology, BHF Centre of Research Excellence, University of Oxford, Mansfield Road, Oxford OX1 3QT
| | - John Parrington
- From the Department of Pharmacology, BHF Centre of Research Excellence, University of Oxford, Mansfield Road, Oxford OX1 3QT
| | - Grant C Churchill
- From the Department of Pharmacology, BHF Centre of Research Excellence, University of Oxford, Mansfield Road, Oxford OX1 3QT
| | - Ming Lei
- From the Department of Pharmacology, BHF Centre of Research Excellence, University of Oxford, Mansfield Road, Oxford OX1 3QT
| | - Antony Galione
- From the Department of Pharmacology, BHF Centre of Research Excellence, University of Oxford, Mansfield Road, Oxford OX1 3QT
| | - Derek A Terrar
- From the Department of Pharmacology, BHF Centre of Research Excellence, University of Oxford, Mansfield Road, Oxford OX1 3QT,
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6
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Cantó C, Menzies KJ, Auwerx J. NAD(+) Metabolism and the Control of Energy Homeostasis: A Balancing Act between Mitochondria and the Nucleus. Cell Metab 2015; 22:31-53. [PMID: 26118927 PMCID: PMC4487780 DOI: 10.1016/j.cmet.2015.05.023] [Citation(s) in RCA: 1036] [Impact Index Per Article: 115.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
NAD(+) has emerged as a vital cofactor that can rewire metabolism, activate sirtuins, and maintain mitochondrial fitness through mechanisms such as the mitochondrial unfolded protein response. This improved understanding of NAD(+) metabolism revived interest in NAD(+)-boosting strategies to manage a wide spectrum of diseases, ranging from diabetes to cancer. In this review, we summarize how NAD(+) metabolism links energy status with adaptive cellular and organismal responses and how this knowledge can be therapeutically exploited.
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Affiliation(s)
- Carles Cantó
- Nestlé Institute of Health Sciences, 1015 Lausanne, Switzerland
| | - Keir J Menzies
- Laboratory of Integrative and Systems Physiology, École Polytechnique Fédérale de Lausanne, 1015 Lausanne, Switzerland
| | - Johan Auwerx
- Laboratory of Integrative and Systems Physiology, École Polytechnique Fédérale de Lausanne, 1015 Lausanne, Switzerland.
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Warszta D, Nebel M, Fliegert R, Guse AH. NAD derived second messengers: Role in spontaneous diastolic Ca(2+) transients in murine cardiac myocytes. DNA Repair (Amst) 2014; 23:69-78. [PMID: 24997848 DOI: 10.1016/j.dnarep.2014.05.007] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2014] [Revised: 05/15/2014] [Accepted: 05/22/2014] [Indexed: 10/25/2022]
Abstract
Strong β-adrenergic stimulation induced spontaneous diastolic Ca(2+) transients (SCTs) in electrically paced murine cardiac myocytes [28]. To obtain further insights into the underlying mechanism, we developed a method for a simultaneous analysis, in which the free luminal Ca(2+) concentration in the sarcoplasmic reticulum (SR) ([Ca(2+)]SR) and the free cytosolic Ca(2+) concentration ([Ca(2+)]i) were measured in parallel in the same cell. Each spontaneous diastolic Ca(2+) transient was exactly mirrored by a decrease of [Ca(2+)]SR. Since antagonism of the Ca(2+) mobilizing second messenger nicotinic acid adenine dinucleotide phosphate (NAADP) was shown to block SCTs in single cardiac myocytes [28], we analyzed the effect of the novel ADP-ribosyl cyclase inhibitor SAN4825 on both cytosolic and intra-luminal Ca(2+) transients upon strong β-adrenergic stimulation. A strong antagonist effect of SAN4825 on SCTs at low micromolar concentrations was observed. Our results suggest that the underlying mechanism of spontaneous diastolic Ca(2+) transients observed upon strong β-adrenergic stimulation is sensitization of type 2 ryanodine receptor by the Ca(2+) releasing activity of the products of ADP-ribosyl cyclase activity.
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Affiliation(s)
- Dominik Warszta
- The Calcium Signalling Group, Department of Biochemistry and Molecular Cell Biology, University Medical Centre Hamburg-Eppendorf, Martinistrasse 52, 20246 Hamburg, Germany
| | - Merle Nebel
- The Calcium Signalling Group, Department of Biochemistry and Molecular Cell Biology, University Medical Centre Hamburg-Eppendorf, Martinistrasse 52, 20246 Hamburg, Germany
| | - Ralf Fliegert
- The Calcium Signalling Group, Department of Biochemistry and Molecular Cell Biology, University Medical Centre Hamburg-Eppendorf, Martinistrasse 52, 20246 Hamburg, Germany
| | - Andreas H Guse
- The Calcium Signalling Group, Department of Biochemistry and Molecular Cell Biology, University Medical Centre Hamburg-Eppendorf, Martinistrasse 52, 20246 Hamburg, Germany.
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Nam TS, Park KH, Shawl AI, Kim BJ, Han MK, Kim Y, Moss J, Kim UH. Critical role for NAD glycohydrolase in regulation of erythropoiesis by hematopoietic stem cells through control of intracellular NAD content. J Biol Chem 2014; 289:16362-73. [PMID: 24759100 DOI: 10.1074/jbc.m114.560359] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
NAD glycohydrolases (NADases) catalyze the hydrolysis of NAD to ADP-ribose and nicotinamide. Although many members of the NADase family, including ADP-ribosyltransferases, have been cloned and characterized, the structure and function of NADases with pure hydrolytic activity remain to be elucidated. Here, we report the structural and functional characterization of a novel NADase from rabbit reticulocytes. The novel NADase is a glycosylated, glycosylphosphatidylinositol-anchored cell surface protein exclusively expressed in reticulocytes. shRNA-mediated knockdown of the NADase in bone marrow cells resulted in a reduction of erythroid colony formation and an increase in NAD level. Furthermore, treatment of bone marrow cells with NAD, nicotinamide, or nicotinamide riboside, which induce an increase in NAD content, resulted in a significant decrease in erythroid progenitors. These results indicate that the novel NADase may play a critical role in regulating erythropoiesis of hematopoietic stem cells by modulating intracellular NAD.
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Affiliation(s)
- Tae-Sik Nam
- From the Department of Biochemistry, National Creative Research Laboratory for Ca Signaling Network, and
| | - Kwang-Hyun Park
- From the Department of Biochemistry, National Creative Research Laboratory for Ca Signaling Network, and
| | - Asif Iqbal Shawl
- From the Department of Biochemistry, National Creative Research Laboratory for Ca Signaling Network, and
| | - Byung-Ju Kim
- From the Department of Biochemistry, National Creative Research Laboratory for Ca Signaling Network, and
| | - Myung-Kwan Han
- Department of Microbiology, Chonbuk National University Medical School, Jeonju 561-182, Korea
| | - Youngho Kim
- Department of Biochemistry, School of Medicine, Wonkwang University, Iksan 570-749, Korea, and
| | - Joel Moss
- Cardiovascular and Pulmonary Branch, NHLBI, National Institutes of Health, Bethesda, Maryland 20892
| | - Uh-Hyun Kim
- From the Department of Biochemistry, National Creative Research Laboratory for Ca Signaling Network, and Institute of Cardiovascular Research, Chonbuk National University Medical School, Jeonju 561-182, Korea,
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Intracellular NAADP increase induced by extracellular NAADP via the P2Y11-like receptor. Biochem Biophys Res Commun 2013; 436:199-203. [PMID: 23726915 DOI: 10.1016/j.bbrc.2013.04.110] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2013] [Accepted: 04/27/2013] [Indexed: 11/23/2022]
Abstract
The aim of the study was to identify a signalling pathway allowing NAADP-induced intracellular NAADP increase and involving the P2Y11-like receptor. P2Y11-like and β-adrenergic receptors may play important regulatory roles within the cardiovascular system. Both receptors have been shown to be involved in triggering myocardial preconditioning. Using a Langendorff model we report a positive inotropic response induced by extracellular NAADP via P2Y11-like receptor stimulation. In cardiomyocyte cultures, P2Y11-like receptor stimulation by extracellular NAADP ([NAADP]e) increased intracellular cADP-ribose and NAADP concentration as evidenced by direct measurements. NF546, a new selective P2Y11 receptor agonist, increased intracellular cAMP, cADP-ribose and NAADP concentration confirming the involvement of the P2Y11-like receptor in this signalling pathway. NF157, a P2Y11 receptor antagonist, suppressed the increase in intracellular cADPr, NAADP and NAAD induced by either [NAADP]e or NF546. The response profile for intracellular cADP-ribose and NAADP concentration following P2Y11-like stimulation with NF546 was similar to reported data relating β-adrenergic stimulation with isoprenaline. This response represents the signature of the Gs/ADP-ribosyl cyclase activity. Moreover, this study provides a signalling pathway: intracellular NAADP increase induced by extracellular NAADP via metabotropic activity of P2Y11-like receptor. This pathway implying P2Y11-like could take part in the intracellular calcium rise reported for extracellular NAADP.
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Lewis AM, Aley PK, Roomi A, Thomas JM, Masgrau R, Garnham C, Shipman K, Paramore C, Bloor-Young D, Sanders LEL, Terrar DA, Galione A, Churchill GC. β-Adrenergic receptor signaling increases NAADP and cADPR levels in the heart. Biochem Biophys Res Commun 2012; 427:326-9. [PMID: 22995315 DOI: 10.1016/j.bbrc.2012.09.054] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2012] [Accepted: 09/10/2012] [Indexed: 10/27/2022]
Abstract
Evidence suggests that β-Adrenergic receptor signaling increases heart rate and force through not just cyclic AMP but also the Ca(2+)-releasing second messengers NAADP (nicotinic acid adenine dinucleotide phosphate) and cADPR (cyclic ADP-ribose). Nevertheless, proof of the physiological relevance of these messengers requires direct measurements of their levels in response to receptor stimulation. Here we report that in intact Langendorff-perfused hearts β-adrenergic stimulation increased both messengers, with NAADP being transient and cADPR being sustained. Both NAADP and cADPR have physiological and therefore pathological relevance by providing alternative drug targets in the β-adrenergic receptor signaling pathway.
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Affiliation(s)
- Alexander M Lewis
- Department of Pharmacology, University of Oxford, Mansfield Road, Oxford OX1 3QT, UK
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Kannt A, Sicka K, Kroll K, Kadereit D, Gögelein H. Selective inhibitors of cardiac ADPR cyclase as novel anti-arrhythmic compounds. Naunyn Schmiedebergs Arch Pharmacol 2012; 385:717-27. [PMID: 22526470 PMCID: PMC3367138 DOI: 10.1007/s00210-012-0750-2] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2011] [Accepted: 03/26/2012] [Indexed: 12/17/2022]
Abstract
ADP-ribosyl cyclases (ADPRCs) catalyse the conversion of nicotinamide adenine dinucleotide to cyclic adenosine diphosphoribose (cADPR) which is a second messenger involved in Ca(2+) mobilisation from intracellular stores. Via its interaction with the ryanodine receptor Ca(2+) channel in the heart, cADPR may exert arrhythmogenic activity. To test this hypothesis, we have studied the effect of novel cardiac ADPRC inhibitors in vitro and in vivo in models of ventricular arrhythmias. Using a high-throughput screening approach on cardiac sarcoplasmic reticulum membranes isolated from pig and rat and nicotinamide hypoxanthine dinuleotide as a surrogate substrate, we have identified potent and selective inhibitors of an intracellular, membrane-bound cardiac ADPRC that are different from the two known mammalian ADPRCs, CD38 and CD157/Bst1. We show that two structurally distinct cardiac ADPRC inhibitors, SAN2589 and SAN4825, prevent the formation of spontaneous action potentials in guinea pig papillary muscle in vitro and that compound SAN4825 is active in vivo in delaying ventricular fibrillation and cardiac arrest in a guinea pig model of Ca(2+) overload-induced arrhythmia. Inhibition of cardiac ADPRC prevents Ca(2+) overload-induced spontaneous depolarizations and ventricular fibrillation and may thus provide a novel therapeutic principle for the treatment of cardiac arrhythmias.
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Affiliation(s)
- Aimo Kannt
- Sanofi-Aventis Deutschland GmbH, Industriepark Hoechst, G877, 65926 Frankfurt am Main, Germany.
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12
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Lee HC. Cyclic ADP-ribose and NAADP: fraternal twin messengers for calcium signaling. SCIENCE CHINA-LIFE SCIENCES 2011; 54:699-711. [PMID: 21786193 DOI: 10.1007/s11427-011-4197-3] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/11/2011] [Accepted: 06/10/2011] [Indexed: 12/17/2022]
Abstract
The concept advanced by Berridge and colleagues that intracellular Ca(2+)-stores can be mobilized in an agonist-dependent and messenger (IP(3))-mediated manner has put Ca(2+)-mobilization at the center stage of signal transduction mechanisms. During the late 1980s, we showed that Ca(2+)-stores can be mobilized by two other messengers unrelated to inositol trisphosphate (IP(3)) and identified them as cyclic ADP-ribose (cADPR), a novel cyclic nucleotide from NAD, and nicotinic acid adenine dinucleotide phosphate (NAADP), a linear metabolite of NADP. Their messenger functions have now been documented in a wide range of systems spanning three biological kingdoms. Accumulated evidence indicates that the target of cADPR is the ryanodine receptor in the sarco/endoplasmic reticulum, while that of NAADP is the two pore channel in endolysosomes.As cADPR and NAADP are structurally and functionally distinct, it is remarkable that they are synthesized by the same enzyme. They are thus fraternal twin messengers. We first identified the Aplysia ADP-ribosyl cyclase as one such enzyme and, through homology, found its mammalian homolog, CD38. Gene knockout in mice confirms the important roles of CD38 in diverse physiological functions from insulin secretion, susceptibility to bacterial infection, to social behavior of mice through modulating neuronal oxytocin secretion. We have elucidated the catalytic mechanisms of the Aplysia cyclase and CD38 to atomic resolution by crystallography and site-directed mutagenesis. This article gives a historical account of the cADPR/NAADP/CD38-signaling pathway and describes current efforts in elucidating the structure and function of its components.
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Affiliation(s)
- Hon Cheung Lee
- Department of Physiology, University of Hong Kong, Hong Kong, China.
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13
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Park KH, Kim BJ, Kang J, Nam TS, Lim JM, Kim HT, Park JK, Kim YG, Chae SW, Kim UH. Ca2+ signaling tools acquired from prostasomes are required for progesterone-induced sperm motility. Sci Signal 2011; 4:ra31. [PMID: 21586728 DOI: 10.1126/scisignal.2001595] [Citation(s) in RCA: 129] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Abstract
Progesterone-induced calcium ion (Ca2+) signals in the neck region of sperm play a pivotal role in promoting sperm motility. Here, we show that a long-lasting Ca2+ signal required for sperm motility in response to progesterone depends on their pH-dependent fusion with prostasomes, which are small vesicles secreted by the prostate. We found that prostasome fusion led to the transfer of progesterone receptors, cyclic adenosine diphosphoribose (cADPR)-synthesizing enzymes, ryanodine receptors (RyRs), and other Ca2+ signaling tools from prostasomes to the sperm neck. Progesterone-induced sperm motility relied on cADPR-mediated Ca2+ mobilization through RyR located on acidic Ca2+ stores, followed by Ca2+ entry through store-operated channels. Treatment of prostasome-fused sperm with a cADPR antagonist or fusion with prostasomes in which type 2 RyR was depleted resulted in low fertilization rates, reduced sperm motility, or both. Thus, we conclude that sperm motility depends on the acquisition of Ca2+ signaling tools from prostasomes.
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Affiliation(s)
- Kwang-Hyun Park
- Department of Biochemistry, Chonbuk National University Medical School, Jeonju 561-180, Korea
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14
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Yip KP, Sham JSK. Mechanisms of vasopressin-induced intracellular Ca2+ oscillations in rat inner medullary collecting duct. Am J Physiol Renal Physiol 2010; 300:F540-8. [PMID: 21147839 DOI: 10.1152/ajprenal.00544.2009] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Arginine vasopressin (AVP) causes increase in intracellular Ca(2+) concentration with an oscillatory pattern. Ca(2+) mobilization is required for AVP-stimulated apical exocytosis in inner medullary collecting duct (IMCD). The mechanistic basis of these Ca(2+) oscillations was investigated by confocal fluorescence microscopy and flash photolysis of caged molecules in perfused IMCD. Photorelease of caged cAMP and direct activation of ryanodine receptors (RyRs) by photorelease of caged cyclic ADP-ribose (cADPR) both mimicked the AVP-induced Ca(2+) oscillations. Preincubation of IMCD with 100 μM 8-bromo-cADPR (a competitive inhibitor of cADPR) delayed the onset and attenuated the magnitude of AVP-induced Ca(2+) oscillations. These observations indicate that the cADPR/RyR pathway is capable of supporting Ca(2+) oscillations and endogenous cADPR plays a major role in the AVP-induced Ca(2+) oscillations in IMCD. In contrast, photorelease of caged inositol 1,4,5-trisphosphate (IP(3)) induced Ca(2+) release but did not maintain sustained Ca(2+) oscillations. Removal of extracellular Ca(2+) halted ongoing AVP-mediated Ca(2+) oscillation, suggesting that it requires extracellular Ca(2+) entry. AVP-induced Ca(2+) oscillation was unaffected by nifedipine. Intracellular Ca(2+) store depletion induced by 20 μM thapsigargin in Ca(2+)-free medium triggered store-operated Ca(2+) entry (SOCE) in IMCD, which was attenuated by 1 μM GdCl(3) and 50 μM SKF-96365. After incubation of IMCD with 1 nM AVP in Ca(2+)-free medium, application of extracellular Ca(2+) also triggered Ca(2+) influx, which was sensitive to GdCl(3) and SKF-96365. In summary, our observations are consistent with the notion that AVP-induced Ca(2+) oscillations in IMCD are mediated by the interplay of Ca(2+) release from RyRs and a Ca(2+) influx mechanism involving nonselective cation channels that resembles SOCE.
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Affiliation(s)
- Kay-Pong Yip
- Department of Molecular Pharmacology and Physiology, Coll. of Medicine, University of South Florida, Tampa, FL 33612, USA.
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15
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Xu X, Zhang L, Luo Z, Shen D, Wu H, Peng L, Song J, Zhang Y. Metal ions binding to NAD-glycohydrolase from the venom of Agkistrodon acutus: regulation of multicatalytic activity. Metallomics 2010; 2:480-9. [PMID: 21072348 DOI: 10.1039/c0mt00017e] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
AA-NADase from Agkistrodon acutus venom is a unique multicatalytic enzyme with both NADase and AT(D)Pase activities. Among all identified NADases, only AA-NADase contains Cu(2+) ions that are essential for its multicatalytic activity. In this study, the interactions between divalent metal ions and AA-NADase and the effects of metal ions on its structure and activity have been investigated by equilibrium dialysis, isothermal titration calorimetry, fluorescence, circular dichroism, dynamic light scattering and HPLC. The results show that AA-NADase has two classes of Cu(2+) binding sites, one activator site with high affinity and approximately six inhibitor sites with low affinity. Cu(2+) ions function as a switch for its NADase activity. In addition, AA-NADase has one Mn(2+) binding site, one Zn(2+) binding site, one strong and two weak Co(2+) binding sites, and two strong and six weak Ni(2+) binding sites. Metal ion binding affinities follow the trend Cu(2+) > Ni(2+) > Mn(2+) > Co(2+) > Zn(2+), which accounts for the existence of one Cu(2+) in the purified AA-NADase. Both NADase and ADPase activities of AA-NADase do not have an absolute requirement for Cu(2+), and all tested metal ions activate its NADase and ADPase activities and the activation capacity follows the trend Zn(2+) > Mn(2+) > Cu(2+) ~Co(2+) > Ni(2+). Metal ions serve as regulators for its multicatalytic activity. Although all tested metal ions have no obvious effects on the global structure of AA-NADase, Cu(2+)- and Zn(2+)-induced conformational changes around some Trp residues have been observed. Interestingly, each tested metal ion has a very similar activation of both NADase and ADPase activities, suggesting that the two different activities probably occur at the same site.
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Affiliation(s)
- Xiaolong Xu
- Department of Chemistry, University of Science and Technology of China, Hefei, P. R. China.
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16
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Ramakrishnan L, Muller-Steffner H, Bosc C, Vacquier VD, Schuber F, Moutin MJ, Dale L, Patel S. A single residue in a novel ADP-ribosyl cyclase controls production of the calcium-mobilizing messengers cyclic ADP-ribose and nicotinic acid adenine dinucleotide phosphate. J Biol Chem 2010; 285:19900-9. [PMID: 20385553 DOI: 10.1074/jbc.m110.105312] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
Cyclic ADP-ribose and nicotinic acid adenine dinucleotide phosphate are ubiquitous calcium-mobilizing messengers produced by the same family of multifunctional enzymes, the ADP-ribosyl cyclases. Not all ADP-ribosyl cyclases have been identified, and how production of different messengers is achieved is incompletely understood. Here, we report the cloning and characterization of a novel ADP-ribosyl cyclase (SpARC4) from the sea urchin, a key model organism for the study of calcium-signaling pathways. Like several other members of the ADP-ribosyl cyclase superfamily, SpARC4 is a glycoprotein targeted to the plasma membrane via a glycosylphosphatidylinositol anchor. However, unlike most other members, SpARC4 shows a remarkable preference for producing cyclic ADP-ribose over nicotinic acid adenine dinucleotide phosphate. Mutation of a single residue (tyrosine 142) within a noncanonical active site reversed this striking preference. Our data highlight further diversification of this unusual enzyme family, provide mechanistic insight into multifunctionality, and suggest that different ADP-ribosyl cyclases are fine-tuned to produce specific calcium-mobilizing messengers.
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Affiliation(s)
- Latha Ramakrishnan
- Department of Cell and Developmental Biology, University College London, London WC1E 6BT, United Kingdom
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17
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Thai TL, Arendshorst WJ. Mice lacking the ADP ribosyl cyclase CD38 exhibit attenuated renal vasoconstriction to angiotensin II, endothelin-1, and norepinephrine. Am J Physiol Renal Physiol 2009; 297:F169-76. [PMID: 19403649 DOI: 10.1152/ajprenal.00079.2009] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
ADP ribosyl (ADPR) cyclases comprise a family of ectoenzymes recently shown to influence cytosolic Ca(2+) concentration in a variety of cell types. At least two ADPR cyclase family members have been identified in mammals: CD38 and CD157. We recently found reduced renal vascular reactivity to angiotensin II (ANG II), endothelin-1 (ET-1), and norepinephrine (NE) in the presence of the broad ADPR cyclase inhibitor nicotinamide. We hypothesized that CD38 mediates effects attributed to ADPR cyclase. We found expression of ADPR cyclases CD38 and CD157 mRNA in spleen, thymus, skin, and preglomerular arterioles of wild-type (WT) animals. Mice lacking CD38 showed decreased CD157 expression in most tissues tested. No difference in systolic or mean arterial pressure was observed between strains in either conscious or anesthetized states, whereas heart rate was reduced 10-20% in CD38-/- animals (P < 0.05). During anesthesia, CD38-/- mice had reduced basal renal blood flow (RBF) and urine excretion (P < 0.05). RBF responses to intravenous injection of ANG II, ET-1, and NE were attenuated approximately 50% in CD38-/- vs. WT mice (P < 0.01 for all). The systemic pressor response to ANG II was decreased in the absence of CD38 (P < 0.01), whereas that to NE was normal (P > 0.05); ET-1 was administered at a nonpressor dose. Nicotinamide effectively inhibited ANG II-induced renal vasoconstriction in WT mice (P < 0.001), but had no effect on renal responses to ANG II in CD38-/- mice (P > 0.5). Overall, our observations indicate the presence of two ADPR cyclase family members in renal preglomerular resistance arterioles and the importance of CD38 participation in acute vascular responses to all three vasoconstrictors in the renal microcirculation.
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Affiliation(s)
- Tiffany L Thai
- Department of Cell and Molecular Physiology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, USA
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18
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Morgan AJ, Galione A. Investigating cADPR and NAADP in intact and broken cell preparations. Methods 2008; 46:194-203. [PMID: 18852050 DOI: 10.1016/j.ymeth.2008.09.013] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2008] [Accepted: 09/12/2008] [Indexed: 11/26/2022] Open
Abstract
The body of literature characterizing cyclic adenosine diphosphoribose (cADPR) and nicotinic acid adenine dinucleotide phosphate (NAADP) as Ca2+-mobilizing second messengers is growing apace. However, their unique properties may, for the uninitiated, make them difficult to work with. This article reviews many of the available techniques (and associated pitfalls) for investigating these nucleotide messengers, predominantly focusing upon optical techniques using fluorescent reporters to measure Ca2+ in the cytosol as well as Ca2+ or pH within the lumen of intracellular organelles.
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Affiliation(s)
- Anthony J Morgan
- Department of Pharmacology, University of Oxford, Mansfield Road, Oxford, Oxon OX1 3QT, UK.
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19
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Bruzzone S, Bodrato N, Usai C, Guida L, Moreschi I, Nano R, Antonioli B, Fruscione F, Magnone M, Scarfì S, De Flora A, Zocchi E. Abscisic acid is an endogenous stimulator of insulin release from human pancreatic islets with cyclic ADP ribose as second messenger. J Biol Chem 2008; 283:32188-97. [PMID: 18784081 DOI: 10.1074/jbc.m802603200] [Citation(s) in RCA: 107] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Abscisic acid (ABA) is a plant stress hormone recently identified as an endogenous pro-inflammatory cytokine in human granulocytes. Because paracrine signaling between pancreatic beta cells and inflammatory cells is increasingly recognized as a pathogenetic mechanism in the metabolic syndrome and type II diabetes, we investigated the effect of ABA on insulin secretion. Nanomolar ABA increases glucose-stimulated insulin secretion from RIN-m and INS-1 cells and from murine and human pancreatic islets. The signaling cascade triggered by ABA in insulin-releasing cells sequentially involves a pertussis toxin-sensitive G protein, cAMP overproduction, protein kinase A-mediated activation of the ADP-ribosyl cyclase CD38, and cyclic ADP-ribose overproduction. ABA is rapidly produced and released from human islets, RIN-m, and INS-1 cells stimulated with high glucose concentrations. In conclusion, ABA is an endogenous stimulator of insulin secretion in human and murine pancreatic beta cells. Autocrine release of ABA by glucose-stimulated pancreatic beta cells, and the paracrine production of the hormone by activated granulocytes and monocytes suggest that ABA may be involved in the physiology of insulin release as well as in its dysregulation under conditions of inflammation.
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Affiliation(s)
- Santina Bruzzone
- Department of Experimental Medicine, Section of Biochemistry, and Center of Excellence for Biomedical Research, University of Genova, Viale Benedetto XV/1, 16132 Genova, Italy
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20
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Gul R, Park JH, Kim SY, Jang KY, Chae JK, Ko JK, Kim UH. Inhibition of ADP-ribosyl cyclase attenuates angiotensin II-induced cardiac hypertrophy. Cardiovasc Res 2008; 81:582-91. [PMID: 18719074 DOI: 10.1093/cvr/cvn232] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
AIMS Here, we report the discovery of a small molecule inhibitor, 2,2'-dihydroxyazobenzene (DAB), of ADP ribosyl cyclase (ADPR-cyclase) and showed that this inhibitor attenuated angiotensin (Ang) II-induced hypertrophic responses. METHODS and results The intracellular concentration of free Ca(2+) [Ca(2+)](i) in adult rat cardiomyocytes was measured by using a confocal microscope. Cardiac hypertrophy was induced by the two-kidney one-clip (2K1C) method. Hypertrophy was determined by de novo protein synthesis, cell volume, echocardiography, nuclear translocation of nuclear factor of activated T-cells, and transforming growth factor-beta1 protein expression. Treatment of cardiomyocytes with Ang II generated a biphasic [Ca(2+)](i) increase that included an initial Ca(2+)peak and sustained Ca(2+) rise via inositol trisphosphate and cyclic ADP-ribose (cADPR) formation, respectively. A cADPR antagonistic analogue, 8-Br-cADPR, and an ADPR-cyclase inhibitor, DAB, blocked the sustained Ca(2+) signal, but not the initial Ca(2+) rise. Furthermore, DAB significantly inhibited Ang II-mediated cADPR formation and hypertrophic responses in vitro. Echocardiography and histological examination revealed significant cardiac hypertrophy in 2K1C rats that was potently inhibited by treatment with DAB. In addition, the hypertrophic responses induced by Ang II in vitro were significantly increased by 2K1C, and DAB treatment reversed these hypertrophic responses to the levels of sham Control. CONCLUSION ADPR-cyclase is an important mediator of cardiac hypertrophy, and inhibition of ADPR-cyclase by DAB may provide a new therapeutic strategy for cardiac diseases.
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Affiliation(s)
- Rukhsana Gul
- Department of Biochemistry, Chonbuk National University Medical School, Keum-am Dong San 2-20, Duk-jin Ku, Jeonju 561-182, Republic of Korea
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21
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Gul R, Kim SY, Park KH, Kim BJ, Kim SJ, Im MJ, Kim UH. A novel signaling pathway of ADP-ribosyl cyclase activation by angiotensin II in adult rat cardiomyocytes. Am J Physiol Heart Circ Physiol 2008; 295:H77-88. [PMID: 18456728 DOI: 10.1152/ajpheart.01355.2007] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
ADP-ribosyl cyclase (ADPR-cyclase) produces a Ca(2+)-mobilizing second messenger, cADP-ribose (cADPR), from NAD(+). In this study, we investigated the molecular basis of ADPR-cyclase activation in the ANG II signaling pathway and cellular responses in adult rat cardiomyocytes. The results showed that ANG II generated biphasic intracellular Ca(2+) concentration increases that include a rapid transient Ca(2+) elevation via inositol trisphosphate (IP(3)) receptor and sustained Ca(2+) rise via the activation of L-type Ca(2+) channel and opening of ryanodine receptor. ANG II-induced sustained Ca(2+) rise was blocked by a cADPR antagonistic analog, 8-bromo-cADPR, indicating that sustained Ca(2+) rise is mediated by cADPR. Supporting the notion, ADPR-cyclase activity and cADPR production by ANG II were increased in a time-dependent manner. Application of pharmacological inhibitors and immunological analyses revealed that cADPR formation was activated by sequential activation of Src, phosphatidylinositol 3-kinase (PI 3-kinase)/protein kinase B (Akt), phospholipase C (PLC)-gamma1, and IP(3)-mediated Ca(2+) signal. Inhibitors of these signaling molecules not only completely abolished the ANG II-induced Ca(2+) signals but also inhibited cADPR formation. Application of the cADPR antagonist and inhibitors of upstream signaling molecules of ADPR-cyclase inhibited ANG II-stimulated hypertrophic responses, which include nuclear translocation of Ca(2+)/calcineurin-dependent nuclear factor of activated T cells 3, protein expression of transforming growth factor-beta1, and incorporation of [(3)H]leucine in cardiomyocytes. Taken together, these findings suggest that activation of ADPR-cyclase by ANG II entails a novel signaling pathway involving sequential activation of Src, PI 3-kinase/Akt, and PLC-gamma1/IP(3) and that the activation of ADPR-cyclase can lead to cardiac hypertrophy.
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Affiliation(s)
- Rukhsana Gul
- Dept. of Biochemistry, Chonbuk National Univ. Medical School, Keum-am dong, Jeonju, 561-182, Republic of Korea
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22
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Churamani D, Boulware MJ, Geach TJ, Martin AC, Moy GW, Su YH, Vacquier VD, Marchant JS, Dale L, Patel S. Molecular characterization of a novel intracellular ADP-ribosyl cyclase. PLoS One 2007; 2:e797. [PMID: 17726527 PMCID: PMC1949048 DOI: 10.1371/journal.pone.0000797] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2007] [Accepted: 08/02/2007] [Indexed: 11/22/2022] Open
Abstract
Background ADP-ribosyl cyclases are remarkable enzymes capable of catalyzing multiple reactions including the synthesis of the novel and potent intracellular calcium mobilizing messengers, cyclic ADP-ribose and NAADP. Not all ADP-ribosyl cyclases however have been characterized at the molecular level. Moreover, those that have are located predominately at the outer cell surface and thus away from their cytosolic substrates. Methodology/Principal Findings Here we report the molecular cloning of a novel expanded family of ADP-ribosyl cyclases from the sea urchin, an extensively used model organism for the study of inositol trisphosphate-independent calcium mobilization. We provide evidence that one of the isoforms (SpARC1) is a soluble protein that is targeted exclusively to the endoplasmic reticulum lumen when heterologously expressed. Catalytic activity of the recombinant protein was readily demonstrable in crude cell homogenates, even under conditions where luminal continuity was maintained. Conclusions/Significance Our data reveal a new intracellular location for ADP-ribosyl cyclases and suggest that production of calcium mobilizing messengers may be compartmentalized.
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Affiliation(s)
- Dev Churamani
- Department of Physiology, University College London, London, United Kingdom
| | - Michael J. Boulware
- Department of Pharmacology, University of Minnesota Medical School, Minneapolis, Minnesota, United States of America
| | - Timothy J. Geach
- Department of Anatomy and Developmental Biology, University College London, London, United Kingdom
| | - Andrew C.R. Martin
- Department of Biochemistry and Molecular Biology, University College London, London, United Kingdom
| | - Gary W. Moy
- Center for Marine Biotechnology and Biomedicine, Scripps Institution of Oceanography, University of California at San Diego, La Jolla, California, United States of America
| | - Yi-Hsien Su
- Center for Marine Biotechnology and Biomedicine, Scripps Institution of Oceanography, University of California at San Diego, La Jolla, California, United States of America
| | - Victor D. Vacquier
- Center for Marine Biotechnology and Biomedicine, Scripps Institution of Oceanography, University of California at San Diego, La Jolla, California, United States of America
| | - Jonathan S. Marchant
- Department of Pharmacology, University of Minnesota Medical School, Minneapolis, Minnesota, United States of America
| | - Leslie Dale
- Department of Anatomy and Developmental Biology, University College London, London, United Kingdom
| | - Sandip Patel
- Department of Physiology, University College London, London, United Kingdom
- * To whom correspondence should be addressed. E-mail:
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Abstract
H89 is marketed as a selective and potent inhibitor of protein kinase A (PKA). Since its discovery, it has been used extensively for evaluation of the role of PKA in the heart, osteoblasts, hepatocytes, smooth muscle cells, neuronal tissue, epithelial cells, etc. Despite the frequent use of H89, its mode of specific inhibition of PKA is still not completely understood. It has also been shown that H89 inhibits at least 8 other kinases, while having a relatively large number of PKA-independent effects which may seriously compromise interpretation of data. Thus, while recognizing its kinase inhibiting properties, it is advised that H89 should not be used as the single source of evidence of PKA involvement. H-89 should be used in conjunction with other PKA inhibitors, such as Rp-cAMPS or PKA analogs.
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Affiliation(s)
- A Lochner
- Dept. Biomedical Sciences, Faculty of Health Sciences, University of Stellenbosch, Tygerberg, South Africa
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24
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Rah SY, Park KH, Nam TS, Kim SJ, Kim H, Im MJ, Kim UH. Association of CD38 with Nonmuscle Myosin Heavy Chain IIA and Lck Is Essential for the Internalization and Activation of CD38. J Biol Chem 2007; 282:5653-60. [PMID: 17182620 DOI: 10.1074/jbc.m609478200] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Activation of CD38 in lymphokine-activated killer (LAK) cells involves interleukin-8 (IL8)-mediated protein kinase G (PKG) activation and results in an increase in the sustained intracellular Ca(2+) concentration ([Ca(2+)](i)), cADP-ribose, and LAK cell migration. However, direct phosphorylation or activation of CD38 by PKG has not been observed in vitro. In this study, we examined the molecular mechanism of PKG-mediated activation of CD38. Nonmuscle myosin heavy chain IIA (MHCIIA) was identified as a CD38-associated protein upon IL8 stimulation. The IL8-induced association of MHCIIA with CD38 was dependent on PKG-mediated phosphorylation of MHCIIA. Supporting these observations, IL8- or cell-permeable cGMP analog-induced formation of cADP-ribose, increase in [Ca(2+)](i), and migration of LAK cells were inhibited by treatment with the MHCIIA inhibitor blebbistatin. Binding studies using purified proteins revealed that the association of MHCIIA with CD38 occurred through Lck, a tyrosine kinase. Moreover, these three molecules co-immunoprecipitated upon IL8 stimulation of LAK cells. IL8 treatment of LAK cells resulted in internalization of CD38, which co-localized with MHCIIA and Lck, and blebbistatin blocked internalization of CD38. These findings demonstrate that the association of phospho-MHCIIA with Lck and CD38 is a critical step in the internalization and activation of CD38.
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Affiliation(s)
- So-Young Rah
- Department of Biochemistry, Chonbuk National University Medical School, Jeonju 561-182, Republic of Korea
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25
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Franco L, Bodrato N, Moreschi I, Usai C, Bruzzone S, Scarf ì S, Zocchi E, De Flora A. Cyclic ADP-ribose is a second messenger in the lipopolysaccharide-stimulated activation of murine N9 microglial cell line. J Neurochem 2006; 99:165-76. [PMID: 16987244 DOI: 10.1111/j.1471-4159.2006.04031.x] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
Lipopolysaccharide, the main component of the cell wall of Gram-negative bacteria, is known to activate microglial cells following its interaction with the CD14/Toll-like receptor complex (TLR-4). The activation pathway triggered by lipopolysaccharide in microglia involves enhanced basal levels of intracellular calcium ([Ca2+]i) and terminates with increased generation of cytokines/chemokines and nitric oxide. Here we demonstrate that in lipopolysaccharide-stimulated murine N9 microglial cells, cyclic ADP-ribose, a universal and potent Ca2+ mobiliser generated from NAD+ by ADP-ribosyl cyclases (ADPRC), behaves as a second messenger in the cell activation pathway. Lipopolysaccharide induced phosphorylation, mediated by multiple protein kinases, of the mammalian ADPRC CD38, which resulted in significantly enhanced ADPRC activity and in a 1.7-fold increase in the concentration of intracellular cyclic ADP-ribose. This event was paralleled by doubling of the basal [Ca2+]i levels, which was largely prevented by the cyclic ADP-ribose antagonists 8-Br-cyclic ADP-ribose and ryanodine (by 75% and 88%, respectively). Both antagonists inhibited, although incompletely, functional events downstream of the lipopolysaccharide-induced microglia-activating pathway, i.e. expression of inducible nitric oxide synthase, overproduction and release of nitric oxide and of tumor necrosis factor alpha. The identification of cyclic ADP-ribose as a key signal metabolite in the complex cascade of events triggered by lipopolysaccharide and eventually leading to enhanced generation of pro-inflammatory molecules may suggest a new therapeutic target for treatment of neurodegenerative diseases related to microglia activation.
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Affiliation(s)
- Luisa Franco
- Department of Experimental Medicine, Section of Biochemistry, and Center of Excellence for Biomedical Research, University of Genova, Genova, Italy
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26
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Bruzzone S, Moreschi I, Guida L, Usai C, Zocchi E, De Flora A. Extracellular NAD+ regulates intracellular calcium levels and induces activation of human granulocytes. Biochem J 2006; 393:697-704. [PMID: 16225456 PMCID: PMC1360722 DOI: 10.1042/bj20051302] [Citation(s) in RCA: 57] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Beta-NAD+e (extracellular beta-NAD+), present at nanomolar levels in human plasma, has been implicated in the regulation of [Ca2+]i (the intracellular calcium concentration) in various cell types, including blood cells, by means of different mechanisms. Here, we demonstrate that micromolar NAD+e (both the alpha and the beta extracellular NAD+ forms) induces a sustained [Ca2+]i increase in human granulocytes by triggering the following cascade of causally related events: (i) activation of adenylate cyclase and overproduction of cAMP; (ii) activation of protein kinase A; (iii) stimulation of ADP-ribosyl cyclase activity and consequent overproduction of cADP-ribose, a universal Ca2+ mobilizer; and (iv) influx of extracellular Ca2+. The NAD+e-triggered [Ca2+]i elevation translates into granulocyte activation, i.e. superoxide and nitric oxide generation, and enhanced chemotaxis in response to 0.1-10 microM NAD+e. Thus extracellular beta-NAD+e behaves as a novel pro-inflammatory cytokine, stimulating human granulocytes and potentially recruiting them at sites of inflammation.
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Affiliation(s)
- Santina Bruzzone
- *Department of Experimental Medicine, Section of Biochemistry, and Center of Excellence for Biomedical Research, University of Genova, Viale Benedetto XV/1, 16132 Genova, Italy
| | - Iliana Moreschi
- *Department of Experimental Medicine, Section of Biochemistry, and Center of Excellence for Biomedical Research, University of Genova, Viale Benedetto XV/1, 16132 Genova, Italy
| | - Lucrezia Guida
- *Department of Experimental Medicine, Section of Biochemistry, and Center of Excellence for Biomedical Research, University of Genova, Viale Benedetto XV/1, 16132 Genova, Italy
| | - Cesare Usai
- †Institute of Biophysics, CNR, Via De Marini 6, 16149 Genova, Italy
| | - Elena Zocchi
- *Department of Experimental Medicine, Section of Biochemistry, and Center of Excellence for Biomedical Research, University of Genova, Viale Benedetto XV/1, 16132 Genova, Italy
| | - Antonio De Flora
- *Department of Experimental Medicine, Section of Biochemistry, and Center of Excellence for Biomedical Research, University of Genova, Viale Benedetto XV/1, 16132 Genova, Italy
- To whom correspondence should be addressed (email )
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27
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Zhang JS, Jin D, Higashida H. Acetylcholine stimulates cyclic ADP-ribose formation via M1 muscarinic receptors in rat superior cervical ganglion. Biochem Biophys Res Commun 2005; 335:920-4. [PMID: 16105661 DOI: 10.1016/j.bbrc.2005.07.163] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2005] [Accepted: 07/27/2005] [Indexed: 11/21/2022]
Abstract
The role of cyclic ADP-ribose (cADPR) as the downstream signal of neuronal muscarinic acetylcholine receptors (mAChRs) and the enzyme responsible for its synthesis, ADP-ribosyl cyclase, were examined in the rat superior cervical ganglion (SCG). Application of acetylcholine or other mAChR agonists increased the ADP-ribosyl cyclase activity by about 250-300% in crude membrane fractions from the SCG of 14-day-old rats. This effect was inhibited by atropine or by the M1-mAChR antagonist, pirenzepine, and was mimicked by GTP. These results indicate that the M1 mAChRs couple to the membrane-bound form of ADP-ribosyl cyclase and suggest that cADPR is a second messenger of M1 mAChR signaling in nervous tissue.
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Affiliation(s)
- Jia-Sheng Zhang
- Department of Biophysical Genetics, Kanazawa University Graduate School of Medicine, Kanazawa 920-8640, Japan
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