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Li Y, Pazyra-Murphy MF, Avizonis D, de Sá Tavares Russo M, Tang S, Chen CY, Hsueh YP, Bergholz JS, Jiang T, Zhao JJ, Zhu J, Ko KW, Milbrandt J, DiAntonio A, Segal RA. Sarm1 activation produces cADPR to increase intra-axonal Ca++ and promote axon degeneration in PIPN. J Cell Biol 2022; 221:e202106080. [PMID: 34935867 PMCID: PMC8704956 DOI: 10.1083/jcb.202106080] [Citation(s) in RCA: 37] [Impact Index Per Article: 18.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2021] [Revised: 10/17/2021] [Accepted: 12/07/2021] [Indexed: 12/23/2022] Open
Abstract
Cancer patients frequently develop chemotherapy-induced peripheral neuropathy (CIPN), a painful and long-lasting disorder with profound somatosensory deficits. There are no effective therapies to prevent or treat this disorder. Pathologically, CIPN is characterized by a "dying-back" axonopathy that begins at intra-epidermal nerve terminals of sensory neurons and progresses in a retrograde fashion. Calcium dysregulation constitutes a critical event in CIPN, but it is not known how chemotherapies such as paclitaxel alter intra-axonal calcium and cause degeneration. Here, we demonstrate that paclitaxel triggers Sarm1-dependent cADPR production in distal axons, promoting intra-axonal calcium flux from both intracellular and extracellular calcium stores. Genetic or pharmacologic antagonists of cADPR signaling prevent paclitaxel-induced axon degeneration and allodynia symptoms, without mitigating the anti-neoplastic efficacy of paclitaxel. Our data demonstrate that cADPR is a calcium-modulating factor that promotes paclitaxel-induced axon degeneration and suggest that targeting cADPR signaling provides a potential therapeutic approach for treating paclitaxel-induced peripheral neuropathy (PIPN).
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Affiliation(s)
- Yihang Li
- Department of Neurobiology, Harvard Medical School, Boston, MA
- Department of Cancer Biology, Dana-Farber Cancer Institute, Boston, MA
| | - Maria F. Pazyra-Murphy
- Department of Neurobiology, Harvard Medical School, Boston, MA
- Department of Cancer Biology, Dana-Farber Cancer Institute, Boston, MA
| | - Daina Avizonis
- Metabolomics Innovation Resource, Goodman Cancer Research Centre, McGill University, Montréal, Quebec, Canada
| | - Mariana de Sá Tavares Russo
- Metabolomics Innovation Resource, Goodman Cancer Research Centre, McGill University, Montréal, Quebec, Canada
| | - Sophia Tang
- Department of Cancer Biology, Dana-Farber Cancer Institute, Boston, MA
| | - Chiung-Ya Chen
- Institute of Molecular Biology, Academia Sinica, Taipei, Taiwan, Republic of China
| | - Yi-Ping Hsueh
- Institute of Molecular Biology, Academia Sinica, Taipei, Taiwan, Republic of China
| | - Johann S. Bergholz
- Department of Cancer Biology, Dana-Farber Cancer Institute, Boston, MA
- Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, MA
- Broad Institute of Harvard and Massachusetts Institute of Technology, Cambridge, MA
| | - Tao Jiang
- Department of Cancer Biology, Dana-Farber Cancer Institute, Boston, MA
| | - Jean J. Zhao
- Department of Cancer Biology, Dana-Farber Cancer Institute, Boston, MA
- Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, MA
- Broad Institute of Harvard and Massachusetts Institute of Technology, Cambridge, MA
| | - Jian Zhu
- Department of Genetics, Washington University School of Medicine, St. Louis, MO
| | - Kwang Woo Ko
- Department of Developmental Biology, Washington University School of Medicine, St. Louis, MO
| | - Jeffrey Milbrandt
- Department of Genetics, Washington University School of Medicine, St. Louis, MO
- Needleman Center for Neurometabolism and Axonal Therapeutics, Washington University School of Medicine, St. Louis, MO
| | - Aaron DiAntonio
- Department of Developmental Biology, Washington University School of Medicine, St. Louis, MO
- Needleman Center for Neurometabolism and Axonal Therapeutics, Washington University School of Medicine, St. Louis, MO
| | - Rosalind A. Segal
- Department of Neurobiology, Harvard Medical School, Boston, MA
- Department of Cancer Biology, Dana-Farber Cancer Institute, Boston, MA
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2
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Zeng F, Zhu L, Liao Q, Li X, Zhou Y. Adenosine diphosphate ribose cyclase: An important regulator of human pathological and physiological processes. J Cell Physiol 2022; 237:2064-2077. [PMID: 35098541 DOI: 10.1002/jcp.30688] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2021] [Revised: 12/17/2021] [Accepted: 01/08/2022] [Indexed: 11/10/2022]
Affiliation(s)
- Feng Zeng
- NHC Key Laboratory of Carcinogenesis, Hunan Cancer Hospital and The Affiliated Cancer Hospital of Xiangya School of Medicine Central South University Changsha Hunan China
- Cancer Research Institute, Basic School of Medicine Central South University Changsha Hunan China
- Hunan Key Laboratory of Cancer Metabolism, Hunan Cancer Hospital and the Affiliated Cancer Hospital of Xiangya School of Medicine Central South University Changsha Hunan China
| | - Ling Zhu
- Department of Neurology, Xiangtan Central Hospital Xiangtan Central Hospital Xiangtan Hunan China
| | - Qianjin Liao
- Hunan Key Laboratory of Cancer Metabolism, Hunan Cancer Hospital and the Affiliated Cancer Hospital of Xiangya School of Medicine Central South University Changsha Hunan China
| | - Xin Li
- Breast Cancer Center, Department of General Surgery, Xiangya Hospital Central South University Changsha China
| | - Yanhong Zhou
- NHC Key Laboratory of Carcinogenesis, Hunan Cancer Hospital and The Affiliated Cancer Hospital of Xiangya School of Medicine Central South University Changsha Hunan China
- Cancer Research Institute, Basic School of Medicine Central South University Changsha Hunan China
- Hunan Key Laboratory of Cancer Metabolism, Hunan Cancer Hospital and the Affiliated Cancer Hospital of Xiangya School of Medicine Central South University Changsha Hunan China
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3
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Vibhute AM, Konieczny V, Taylor CW, Sureshan KM. Triazolophostins: a library of novel and potent agonists of IP3 receptors. Org Biomol Chem 2016; 13:6698-710. [PMID: 25869535 PMCID: PMC4533600 DOI: 10.1039/c5ob00440c] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
IP3R initiate most cellular Ca2+ signaling. AdA is the most potent agonist of IP3R. The structural complexity of AdA makes synthesis of its analogs cumbersome. We report an easy method for generating a library of potent triazole-based analogs of AdA, triazolophostins, which are the most potent AdA analogs devoid of a nucleobase.
IP3 receptors are channels that mediate the release of Ca2+ from the intracellular stores of cells stimulated by hormones or neurotransmitters. Adenophostin A (AdA) is the most potent agonist of IP3 receptors, with the β-anomeric adenine contributing to the increased potency. The potency of AdA and its stability towards the enzymes that degrade IP3 have aroused interest in AdA analogs for biological studies. The complex structure of AdA poses problems that have necessitated optimization of synthetic conditions for each analog. Such lengthy one-at-a-time syntheses limit access to AdA analogs. We have addressed this problem by synthesizing a library of triazole-based AdA analogs, triazolophostins, by employing click chemistry. An advanced intermediate having all the necessary phosphates and a β-azide at the anomeric position was reacted with various alkynes under Cu(i) catalysis to yield triazoles, which upon deprotection gave triazolophostins. All eleven triazolophostins synthesized are more potent than IP3 and some are equipotent with AdA in functional analyses of IP3 receptors. We show that a triazole ring can replace adenine without compromising the potency of AdA and provide facile routes to novel AdA analogs.
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Affiliation(s)
- Amol M Vibhute
- School of Chemistry, Indian Institute of Science Education and Research, Thiruvananthapuram, Kerala-695016, India.
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4
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RyR channel-mediated increase of cytosolic free calcium level signals cyclin B1 degradation during abortive spontaneous egg activation in rat. In Vitro Cell Dev Biol Anim 2014; 50:640-7. [PMID: 24696373 DOI: 10.1007/s11626-014-9749-y] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2014] [Accepted: 03/13/2014] [Indexed: 10/25/2022]
Abstract
In few mammalian species including rat, post-ovulatory aging induces abortive spontaneous egg activation (SEA), which is morphologically characterized by exit from metaphase-II (M-II) arrest. A possibility exists that the RyR channel-mediated insufficient increase of cytosolic free Ca(2+) level could be one of the causes for post-ovulatory aging-induced abortive SEA. To test this possibility, eggs collected after 17 h post-hCG surge were cultured with or without various concentrations of nifedipine (NF), ruthenium red (RR), and KN-93 for 3 h in vitro. Morphological changes characteristic of abortive SEA, cytosolic free Ca(2+) level, cyclin B1 level, and meiotic status were analyzed. Data of the present study indicate that NF and RR inhibited post-ovulatory aging-induced abortive SEA in a concentration-dependent manner. Further, RR protected against RyR channel as well as caffeine-mediated increase of cytosolic free Ca(2+) level. In addition, KN-93 inhibited post-ovulatory aging-induced abortive SEA in a concentration-dependent manner. An increase of cytosolic free Ca(2+) level was associated with a reduction of cyclin B1 level during post-ovulatory aging-induced abortive SEA. These data indirectly suggest the involvement of RyR channels in the increase of cytosolic free Ca(2+) level. The increased cytosolic free Ca(2+) level triggers cyclin B1 degradation possibly through CaMK-II activity during post-ovulatory aging-induced abortive SEA in rat eggs cultured in vitro.
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5
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Venturi E, Pitt S, Galfré E, Sitsapesan R. From eggs to hearts: what is the link between cyclic ADP-ribose and ryanodine receptors? Cardiovasc Ther 2010; 30:109-16. [PMID: 21176119 DOI: 10.1111/j.1755-5922.2010.00236.x] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
It was first proposed that cyclic ADP-ribose (cADPR) could activate ryanodine receptors (RyR) in 1991. Following a subsequent report that cADPR could activate cardiac RyR (RyR2) reconstituted into artificial membranes and stimulate Ca(2+) -release from isolated cardiac SR, there has been a steadily mounting stockpile of publications proclaiming the physiological and pathophysiological importance of cADPR in the cardiovascular system. It was only 2 years earlier, in 1989, that cADPR was first identified as the active metabolite of nicotinamide adenine dinucleotide (NAD), responsible for triggering the release of Ca(2+) from crude homogenates of sea urchin eggs. Twenty years later, can we boast of being any closer to unraveling the mechanisms by which cADPR modulates intracellular Ca(2+) -release? This review sets out to examine the mechanisms underlying the effects of cADPR and ask whether cADPR is an important signaling molecule in the heart.
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Affiliation(s)
- Elisa Venturi
- School of Physiology and Pharmacology, British Heart Institute and NSQI, University of Bristol, University Walk, Bristol, UK
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6
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Bagnaresi P, Rodrigues MT, Garcia CRS. Calcium signaling in lizard red blood cells. Comp Biochem Physiol A Mol Integr Physiol 2007; 147:779-787. [PMID: 17095273 DOI: 10.1016/j.cbpa.2006.09.015] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2006] [Revised: 09/21/2006] [Accepted: 09/25/2006] [Indexed: 11/16/2022]
Abstract
The ion calcium is a ubiquitous second messenger, present in all eukaryotic cells. It modulates a vast number of cellular events, such as cell division and differentiation, fertilization, cell volume, decodification of external stimuli. To process this variety of information, the cells display a number of calcium pools, which are capable of mobilization for signaling purposes. Here we review the calcium signaling on lizards red blood cells, an interesting model that has been receiving an increasing notice recently. These cells possess a complex machinery to regulate calcium, and display calcium responses to extracellular agonists. Interestingly, the pattern of calcium handling and response are divergent in different lizard families, which enforces the morphological data to their phylogenetic classification, and suggest the radiation of different calcium signaling models in lizards evolution.
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Affiliation(s)
- Piero Bagnaresi
- Departamento de Fisiologia, Instituto de Biociências, Universidade de São Paulo, São Paulo, Brazil
| | - Miguel T Rodrigues
- Departamento de Zoologia, Instituto de Biociências, Universidade de São Paulo, São Paulo, Brazil
| | - Célia R S Garcia
- Departamento de Fisiologia, Instituto de Biociências, Universidade de São Paulo, São Paulo, Brazil.
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7
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Thompson M, White T, Chini EN. Modulation of store-operated Ca2+ entry by cyclic-ADP-ribose. Braz J Med Biol Res 2006; 39:739-48. [PMID: 16751979 DOI: 10.1590/s0100-879x2006000600006] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Store-operated Ca2+ entry plays an important role in Ca2+ homeostasis in cells but the mechanisms of control of these channels are not completely understood. We describe an investigation of the role of the CD38-cyclic-ADP-ribose (cADPR)-ryanodine-channel (RyR) signaling pathway in store-operated Ca2+ entry in human smooth muscle. We observed that human myometrial cells have a functional store-operated Ca2+ entry mechanism. Furthermore, we observed the presence of transient receptor potential 1, 3, 4, 5, and 6 ion channels in human myometrial cells. Store-operated Ca2+ transient was inhibited by at least 50-70% by several inhibitors of the RyR, including ryanodine (10 microM), dantrolene (10 microM), and ruthenium red (10 microM). Furthermore, the cell permeable inhibitor of the cADPR-system, 8-Br-cADPR (100 microM), is a potent inhibitor of the store-operated entry, decreasing the store operated entry by 80%. Pre-incubation of cells with 100 microM cADPR and the hydrolysis-resistant cADPR analog 3-deaza-cADPR (50 microM), but not with ADP-ribose (ADPR) leads to a 1.6-fold increase in the store-operated Ca2+ transient. In addition, we observed that nicotinamide (1-10 mM), an inhibitor of cADPR synthesis, also leads to inhibition of the store-operated Ca2+ transient by 50-80%. Finally, we observed that the transient receptor potential channels, RyR, and CD38 can be co-immunoprecipitated, indicating that they interact in vivo. Our observations clearly implicate the CD38-cADPR-ryanodine signaling pathway in the regulation of store-operated Ca2+ entry in human smooth muscle cells.
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Affiliation(s)
- M Thompson
- Signal Transduction Laboratory, Department of Anesthesiology, Mayo Clinic and Foundation, Rochester, MN 55905, USA
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8
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Abstract
Humans encounter hypoxia throughout their lives. This occurs by destiny in utero, through disease, and by desire, in our quest for altitude. Hypoxic pulmonary vasoconstriction (HPV) is a widely conserved, homeostatic, vasomotor response of resistance pulmonary arteries to alveolar hypoxia. HPV mediates ventilation-perfusion matching and, by reducing shunt fraction, optimizes systemic Po(2). HPV is intrinsic to the lung, and, although modulated by the endothelium, the core mechanism is in the smooth muscle cell (SMC). The Redox Theory for the mechanism of HPV proposes the coordinated action of a redox sensor (the proximal mitochondrial electron transport chain) that generates a diffusible mediator [a reactive O(2) species (ROS)] that regulates an effector protein [voltage-gated potassium (K(v)) and calcium channels]. A similar mechanism for regulating O(2) uptake/distribution is partially recapitulated in simpler organisms and in the other specialized mammalian O(2)-sensitive tissues, including the carotid body and ductus arteriosus. Inhibition of O(2)-sensitive K(v) channels, particularly K(v)1.5 and K(v)2.1, depolarizes pulmonary artery SMCs, activating voltage-gated Ca(2+) channels and causing Ca(2+) influx and vasoconstriction. Downstream of this pathway, there is important regulation of the contractile apparatus' sensitivity to calcium by rho kinase. Controversy remains as to whether hypoxia decreases or increases ROS and which electron transport chain complex generates the ROS (I and/or III). Possible roles for cyclic adenosine diphosphate ribose and an unidentified endothelial constricting factor are also proposed by some groups. Modulation of HPV has therapeutic relevance to cor pulmonale, high-altitude pulmonary edema, and sleep apnea. HPV is clinically exploited in single-lung anesthesia, and its mechanisms intersect with those of pulmonary arterial hypertension.
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Affiliation(s)
- Rohit Moudgil
- Cardiology Division, Dept. of Medicine, and Vascular Biology Group, University of Alberta, WMC 2C2.36, 8440 112th Street, Edmonton, Alberta, Canada T6G 2B7
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9
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Soares SM, Thompson M, Chini EN. Role of the second-messenger cyclic-adenosine 5'-diphosphate-ribose on adrenocorticotropin secretion from pituitary cells. Endocrinology 2005; 146:2186-92. [PMID: 15718277 DOI: 10.1210/en.2004-1298] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
We examined the role of the second-messenger cyclic-ADP-ribose (cADPR) on the regulation of ACTH secretion using AtT20 corticotroph tumor cell line. We found that the cADPR antagonist, 8-Br-cADPR, substantially diminished the secretion of ACTH induced by CRH and potassium in these cells, whereas xestospongin C, an inositol 1,4,5-triphosphate receptor antagonist, had no effect. In addition, the cADPR agonist, 3-deaza-cADPR, augmented ACTH secretion. The presence of the components of the cADPR system, namely ryanodine receptor, CD38, and cADPR itself, was determined in AtT20 cells. Furthermore, we observed that antagonists of the ryanodine channel and cADPR system can decrease the potassium-induced Ca2+ transients in these cells. These results suggest that cADPR is a second messenger in pituitary cells and regulates ACTH secretion by a mechanism dependent on activation of the ryanodine channel by extracellular Ca2+.
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Affiliation(s)
- Sandra M Soares
- Department of Anesthesiology, Mayo Clinic, Rochester, Minnesota 55905, USA
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10
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Thompson M, Barata da Silva H, Zielinska W, White TA, Bailey JP, Lund FE, Sieck GC, Chini EN. Role of CD38 in myometrial Ca2+ transients: modulation by progesterone. Am J Physiol Endocrinol Metab 2004; 287:E1142-8. [PMID: 15339743 DOI: 10.1152/ajpendo.00122.2004] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Oxytocin-induced Ca(2+) transients play an important role in myometrial contractions. Here, using a knockout model, we found that the enzyme CD38, responsible for the synthesis of the second messenger cyclic ADP-ribose (cADPR), plays an important role in the oxytocin-induced Ca(2+) transients and contraction. We also observed that CD38 is necessary for TNF-alpha-increased agonist-stimulated Ca(2+) transients in human myometrial cells. We provide experimental evidence that the TNF-alpha effect is mediated by increased expression of the enzyme CD38. First, we observed that TNF-alpha increased oxytocin-induced Ca(2+) transients and CD38 expression in human myometrial cells. Moreover, using small interference RNA technology, we observed that TNF-alpha stimulation of agonist-induced Ca(2+) transients was abolished by blocking the expression of CD38. In control experiments, we observed that activation of the component of the TNF-alpha signaling pathway, NF-kappaB, was not affected by the treatments. Finally, we observed that the effects of TNF-alpha on CD38 cyclase and oxytocin-induced Ca(2+) transients are abolished by progesterone. In conclusion, we provide the first experimental evidence that CD38 is important for myometrial Ca(2+) transients and contraction. Moreover, CD38 is necessary for the TNF-alpha-mediated augmentation of agonist-induced Ca(2+) transients in myometrial cells. We propose that the balance between cytokines and placental steroids regulates the expression of CD38 in vivo and cell responsiveness to oxytocin.
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Affiliation(s)
- Michael Thompson
- Dept. of Anesthesiology, Mayo Clinic and Foundation, 200 First Street SW, Rochester, MN 55905, USA
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11
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Zeier J, Delledonne M, Mishina T, Severi E, Sonoda M, Lamb C. Genetic elucidation of nitric oxide signaling in incompatible plant-pathogen interactions. PLANT PHYSIOLOGY 2004; 136:2875-86. [PMID: 15347797 PMCID: PMC523349 DOI: 10.1104/pp.104.042499] [Citation(s) in RCA: 65] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/11/2004] [Revised: 05/26/2004] [Accepted: 06/21/2004] [Indexed: 05/18/2023]
Abstract
Recent experiments indicate that nitric oxide (NO) plays a pivotal role in disease resistance and several other physiological processes in plants. However, most of the current information about the function of NO in plants is based on pharmacological studies, and additional approaches are therefore required to ascertain the role of NO as an important signaling molecule in plants. We have expressed a bacterial nitric oxide dioxygenase (NOD) in Arabidopsis plants and/or avirulent Pseudomonas syringae pv tomato to study incompatible plant-pathogen interactions impaired in NO signaling. NOD expression in transgenic Arabidopsis resulted in decreased NO levels in planta and attenuated a pathogen-induced NO burst. Moreover, NOD expression in plant cells had very similar effects on plant defenses compared to NOD expression in avirulent Pseudomonas. The defense responses most affected by NO reduction during the incompatible interaction were decreased H(2)O(2) levels during the oxidative burst and a blockage of Phe ammonia lyase expression, the key enzyme in the general phenylpropanoid pathway. Expression of the NOD furthermore blocked UV light-induced Phe ammonia lyase and chalcone synthase gene expression, indicating a general signaling function of NO in the activation of the phenylpropanoid pathway. NO possibly functions in incompatible plant-pathogen interactions by inhibiting the plant antioxidative machinery, and thereby ensuring locally prolonged H(2)O(2) levels. Additionally, albeit to a lesser extent, we observed decreases in salicylic acid production, a diminished development of hypersensitive cell death, and a delay in pathogenesis-related protein 1 expression during these NO-deficient plant-pathogen interactions. Therefore, this genetic approach confirms that NO is an important regulatory component in the signaling network of plant defense responses.
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Affiliation(s)
- Jürgen Zeier
- John Innes Centre, Norwich Research Park, Colney, Norwich NR4 7UH, United Kingdom.
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12
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Zielinska W, Barata H, Chini EN. Metabolism of cyclic ADP-ribose: Zinc is an endogenous modulator of the cyclase/NAD glycohydrolase ratio of a CD38-like enzyme from human seminal fluid. Life Sci 2004; 74:1781-90. [PMID: 14741735 DOI: 10.1016/j.lfs.2003.08.033] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
CD38, a bifunctional enzyme capable of both synthesis and hydrolysis of the second messenger cyclic ADP-ribose (cADPR). Using the natural substrate of the enzyme, NAD+, the ratio of ADP-ribosyl cyclase/NAD glycohydrolase of CD38 is about 1/100. Here we describe that human seminal fluid contain a soluble CD38 like enzyme with an apparent M.W. of 49 kDa. When purified this enzyme has a cyclase/NAD glycohydrolase ratio of about 1/120. However, the in situ cyclase/NAD glycohydrolase ratio measured in seminal plasma approaches 1/1. We also found that physiological concentrations of zinc present in the seminal fluid, in the range of 0.6 to 4 mM, are responsible for the modulation of the cyclase/NAD glycohydrolase ratio. This new information indicates that the cyclase/NAD glycohydrolase ratio can be modified in vivo.
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Affiliation(s)
- Weronika Zielinska
- Departments of Anesthesiology and Internal Medicine, Mayo Clinic and Foundation, Rochester, MN 55905, USA
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13
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Barata H, Thompson M, Zielinska W, Han YS, Mantilla CB, Prakash YS, Feitoza S, Sieck G, Chini EN. The role of cyclic-ADP-ribose-signaling pathway in oxytocin-induced Ca2+ transients in human myometrium cells. Endocrinology 2004; 145:881-9. [PMID: 14563702 DOI: 10.1210/en.2003-0774] [Citation(s) in RCA: 63] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Human myometrial contraction plays a fundamental role in labor. Dysfunction of uterine contraction is an important cause of labor progression failure. Although the mechanisms controlling uterine contraction are not completely understood, intracellular Ca2+ mobilization plays an important role during uterine contraction. Several mechanisms of intracellular Ca2+ mobilization are present in smooth muscle, but in the human uterus, only 1,4,5-trisphosphate-induced Ca2+ release has been studied extensively. Ryanodine receptor channels are present in myometrium. We determined the role of the cyclic ADP-ribose (cADPR)-signaling pathway in oxytocin-induced intracellular Ca2+ [(Ca2+)i] transients in human myometrial cells. We found that oxytocin-induced Ca2+ transient is dependent on several sources of Ca2+, including extracellular Ca2+ and intracellular Ca2+ stores. In addition, we found that both the 1,4,5-trisphosphate- and the cADPR-induced Ca2+ releasing systems are important for the induction of [Ca2+]i transients by oxytocin in human myometrial cells. Furthermore, we investigated TNFalpha regulation of oxytocin-induced [Ca2+]i transients, CD38 cyclase activity, and CD38 expression in human myometrial cells. We found that oxytocin-induced [Ca2+]i transients were significantly increased by 50 ng/ml TNF. Similarly, CD38 mRNA levels, CD38 expression, and cyclase activity were increased by TNFalpha, thus increasing cADPR levels. We propose that a complex interaction between multiple signaling pathways is important for the development of intracellular Ca2+ transients induced by oxytocin and that TNFalpha may contribute for the myometrium preparation for labor by regulating the cADPR-signaling pathway. The observation that the cADPR-signaling pathway is important for the development of intracellular Ca2+ transients in human myometrial cells raises the possibility that this signaling pathway could serve as a target for the development of new therapeutic strategies for abnormal myometrial contraction observed during pregnancy.
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Affiliation(s)
- Hosana Barata
- Signal Transduction Laboratory, Department of Anesthesiology, Mayo Clinic and Foundation, Rochester, MN 55905, USA
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14
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Chini EN, Chini CCS, Barata da Silva H, Zielinska W. The cyclic-ADP-ribose signaling pathway in human myometrium. Arch Biochem Biophys 2002; 407:152-9. [PMID: 12413485 DOI: 10.1016/s0003-9861(02)00486-1] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Human myometrial contraction plays a fundamental role in labor. Dysfunction of uterine contraction is an important cause of failure in progression of labor. The mechanisms of control of uterine contractions are not completely understood. It appears that intracellular Ca(2+) mobilization may play an important role during uterine contraction. Several mechanisms of intracellular Ca(2+) mobilization have been described. However, in human uterus only the inositol 1,4,5-trisphosphate-induced Ca(2+) release has been extensively studied to date. In view of the identification of the presence of functional ryanodine channels in myometrium, we explored the role of the endogenous regulator of the ryanodine channel cyclic-ADP-ribose in human myometrial Ca(2+) regulation. Cyclic-ADP-ribose (cADPR) is a naturally occurring nucleotide implicated in the regulation of the gating properties of the ryanodine channel, in fact cADPR may be a second messenger that activates the ryanodine receptor. Here we explore the components of the cADPR system in human myometrium. We found that human myometrium contains all the components of the cADPR pathway including (1) cADPR-activated microsomal Ca(2+) release and (2) enzymes responsible for synthesis and degradation of cADPR and, furthermore, that intracellular levels of cADPR were detected in human myometrial tissue. These data indicate that the cADPR system is present and operational in human myometrial tissue. Further research is warranted to determine the role of this new signaling molecule in uterine contraction.
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Affiliation(s)
- Eduardo N Chini
- Department of Anesthesiology and Department of Internal Medicine, Mayo Clinic and Foundation, Rochester, MN 55905, USA.
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15
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Chini EN. Interactions between intracellular Ca2+ stores: Ca2+ released from the NAADP pool potentiates cADPR-induced Ca2+ release. Braz J Med Biol Res 2002; 35:543-7. [PMID: 12011938 DOI: 10.1590/s0100-879x2002000500005] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Cells possess multiple intracellular Ca2+-releasing systems. Sea urchin egg homogenates are a well-established model to study intracellular Ca2+ release. In the present study the mechanism of interaction between three intracellular Ca2+ pools, namely the nicotinic acid adenine dinucleotide phosphate (NAADP), the cyclic ADP-ribose (cADPR) and the inositol 1',4',5'-trisphosphate (IP3)-regulated Ca2+ stores, is explored. The data indicate that the NAADP Ca2+ pool could be used to sensitize the cADPR system. In contrast, the IP3 pool was not affected by the Ca2+ released by NAADP. The mechanism of potentiation of the cADPR-induced Ca2+ release, promoted by Ca2+ released from the NAADP pool, is mediated by the mechanism of Ca2+-induced Ca2+ release. These data raise the possibility that the NAADP Ca2+ store may have a role as a regulator of the cellular sensitivity to cADPR.
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Affiliation(s)
- Eduardo N Chini
- Department of Anesthesia, Mayo Clinic and Foundation, 200 First Street, Rochester, MN 55905, USA.
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Dewitt S, Laffafian I, Hallett MB. Does neutrophil CD38 have a role in Ca++ signaling triggered by beta2 integrin? Nat Med 2002; 8:307; author reply 307-8. [PMID: 11927913 DOI: 10.1038/nm0402-307a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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17
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Lund FE, Randall TD, Partida-Sánchez S. Reply to 'Does neutrophil CD38 have a role in Ca++ signaling triggered by β2 integrin?'. Nat Med 2002. [DOI: 10.1038/nm0402-307b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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18
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Johnson JD, Wong CJH, Yunker WK, Chang JP. Caffeine-stimulated GTH-II release involves Ca(2+) stores with novel properties. Am J Physiol Cell Physiol 2002; 282:C635-45. [PMID: 11832349 DOI: 10.1152/ajpcell.00044.2001] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Modulation of Ca(2+) stores with 10 mM caffeine stimulates robust secretion of gonadotropin (GTH-II) from goldfish gonadotropes. Although both endogenous forms of gonadotropin-releasing hormone (GnRH) utilize a common intracellular Ca(2+) store, sGnRH, but not cGnRH-II, uses an additional caffeine-sensitive mechanism. We examined caffeine signaling by using Ca(2+) imaging, electrophysiology, and cell-column perifusion. Although caffeine inhibited K+ channels, this action appeared to be unrelated to caffeine-induced GTH-II release, because the latter was insensitive to tetraethylammonium. The effects of caffeine also were not mediated by the cAMP/protein kinase A pathway. Instead, caffeine-evoked GTH-II responses were Ca(2+) signal dependent because they were abolished by 1,2-bis(2-aminophenoxy)ethane-N,N,N',N'-tetraacetic acid loading. Caffeine generated localized Ca(2+) signals that began near secretory granules. Surprisingly, caffeine-stimulated GTH-II release was insensitive to 100 microM ryanodine and, unlike GnRH action, was unaffected by inhibitors of voltage-gated Ca(2+) channels or sarco(endo)plasmic reticulum Ca(2+)-ATPases. Collectively, these data indicate that caffeine-stimulated GTH-II release is not mediated by typical agonist-sensitive Ca(2+) stores found in endoplasmic reticulum.
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Affiliation(s)
- James D Johnson
- Department of Biological Sciences, Biological Sciences Building, University of Alberta, Edmonton, Alberta, Canada T6G 2E9
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Chini EN, Chini CCS, Kato I, Takasawa S, Okamoto H. CD38 is the major enzyme responsible for synthesis of nicotinic acid-adenine dinucleotide phosphate in mammalian tissues. Biochem J 2002; 362:125-30. [PMID: 11829748 PMCID: PMC1222368 DOI: 10.1042/0264-6021:3620125] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
In the present study, we have determined the role of the enzyme CD38 upon the synthesis of the Ca(2+)-releasing nucleotide nicotinic acid-adenine dinucleotide phosphate (NAADP). In rat tissues, we observed that the capacity for NAADP synthesis could be co-immunoprecipitated with CD38 using an anti-CD38 antibody. Furthermore, we observed that several tissues from CD38 knockout mice had no capacity for the synthesis of this nucleotide. In addition, CD38 was also identified as the major enzyme responsible for the synthesis of the second messenger cyclic ADP-ribose. These observations lead to the conclusion that CD38 is the major enzyme responsible for the synthesis of NAADP and cyclic ADP-ribose, and raises the possibility of a new signalling pathway where two different Ca(2+)-releasing nucleotides are synthesized by the same enzyme.
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Affiliation(s)
- Eduardo N Chini
- Department of Anesthesia, Mayo Clinic and Foundation, 200 First Street, Rochester, MN 55905, U.S.A.
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20
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Yusufi ANK, Cheng J, Thompson MA, Burnett JC, Grande JP. Differential mechanisms of Ca(2+) release from vascular smooth muscle cell microsomes. Exp Biol Med (Maywood) 2002; 227:36-44. [PMID: 11788782 DOI: 10.1177/153537020222700107] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
The release of Ca(2+) from intracellular stores is a fundamental element of signaling pathways involved in regulation of vascular tone, proliferation, apoptosis, and gene expression. Studies of sea urchin eggs have led to the identification of three functionally distinct Ca(2+) signaling pathways triggered by IP3, cADPR, and NAADP. The coexistence and functional relevance of these distinct intracellular Ca(2+) release systems has only been described in a few mammalian cell types. The purpose of this study was to determine whether the IP3, cADPR, and NAADP Ca(2+) release systems coexist in smooth muscle cells (SMC) and to determine the specificity of these intracellular Ca(2+) release pathways. Microsomes were prepared from rat aortic SMC (VSMC) and were loaded with 45Ca(2+). cADPR, NAADP, and IP3 induced Ca(2+) release from VSMC microsomes in a dose-dependent fashion. Heparin blocked only IP3-mediated Ca(2+) release, whereas the ryanodine channel inhibitors 8-Br-cADPR and ruthenium red blocked only cADPR-induced Ca(2+) release. Nifedipine, an L-type Ca(2+) channel blocker, inhibited NAADP elicited Ca(2+) release, but had no effect on IP3- or cADPR-mediated Ca(2+) release. An increase in pH from 7.2 to 8.2 inhibited cADPR-mediated Ca(2+) release, but had no effect on IP3- or NAADP-induced Ca(2+) release. By RT-PCR, VSMC expressed ryanodine receptor types 1, 2, and 3. Ca(2+)-dependent binding of [3H]-ryanodine to VSMC microsomes was enhanced by the ryanodine receptor agonists 4-chloro-methyl-phenol (CMP) and caffeine, but was inhibited by ruthenium red and cADPR. We conclude that VSMC possess at least three functionally distinct pathways that promote intracellular Ca(2+) release. IP3-, cADPR-, and NAADP-induced intracellular Ca(2+) release may play a critical role in the maladaptive responses of VSMC to environmental stimuli that are characteristically associated with hypertension and/or atherogenesis.
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Affiliation(s)
- Ahad N K Yusufi
- Renal Pathophysiology Laboratory, Department of Laboratory Medicine and Pathology, Mayo Clinic, Mayo Medical School, Rochester, Minnesota 55905, USA
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21
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Chini EN. Selected contribution: effect of volatile anesthetics on cADP-ribose-induced Ca(2+) release system. J Appl Physiol (1985) 2001; 91:516-21; discussion 504-5. [PMID: 11408471 DOI: 10.1152/jappl.2001.91.1.516] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Volatile anesthetics have multiple actions on intracellular Ca(2+) homeostasis, including activation of the ryanodine channel (RyR) and sensitization of this channel to agonists such as caffeine and ryanodine. Recently it has been described that the nucleotide cADP-ribose (cADPR) is the endogenous regulator of the RyR in many mammalian cells, and cADPR has been proposed to be a second messenger in many signaling pathways. I investigated the effect of volatile anesthetics on the cADPR signaling system, using sea urchin egg homogenates as a model of intracellular Ca(2+) stores. Ca(2+) uptake and release were monitored in sea urchin egg homogenates by using the fluo-3 fluorescence technique. Activity of the ADP-ribosyl cyclase was monitored by using a fluorometric method using nicotinamide guanine dinucleotide as a substrate. Halothane in concentrations up to 800 microM did not induce Ca(2+) release by itself in sea urchin egg homogenates. However, halothane potentiates the Ca(2+) release mediated by agonists of the ryanodine channel, such as ryanodine. Furthermore, other volatile anesthetics such as isoflurane and sevoflurane had no effect. Halothane also potentiated the activation of the ryanodine channel mediated by the endogenous nucleotide cADPR. The half-maximal concentration for cADPR-induced Ca(2+) release was decreased about three times by addition of 800 microM halothane. The reverse was also true: addition of subthreshold concentrations of cADPR sensitized the homogenates to halothane. In contrast, all the volatile anesthetics used had no effect on the activity of the enzyme that synthesizes cADPR. I propose that the complex effect of volatile anesthetics on intracellular Ca(2+) homeostasis may involve modulation of the cADPR signaling system.
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Affiliation(s)
- E N Chini
- Department of Anesthesia, Mayo Clinic and Foundation, Rochester, Minnesota 55905, USA.
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Yusufi AN, Cheng J, Thompson MA, Chini EN, Grande JP. Nicotinic acid-adenine dinucleotide phosphate (NAADP) elicits specific microsomal Ca2+ release from mammalian cells. Biochem J 2001; 353:531-6. [PMID: 11171049 PMCID: PMC1221598 DOI: 10.1042/0264-6021:3530531] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Nicotinic acid-adenine dinucleotide phosphate (NAADP), a molecule derived from beta-NADP, has been shown to promote intracellular calcium release in sea urchin eggs. However, there is little information regarding the role of NAADP in the regulation of intracellular calcium fluxes in mammalian cells. We found recently that several mammalian tissues have a high capacity for NAADP synthesis, as assessed by sea urchin egg bioassay. To determine the functional significance of NAADP production by mammalian tissues, we sought to determine whether NAADP is capable of inducing calcium release from microsomes prepared from cultured cells. We found that NAADP, but not beta-NADP, activates a specific microsomal calcium release system in mesangial cells isolated from rat kidney; NAADP was without effect in renal tubular epithelial cells. NAADP-induced calcium release is not affected by inhibitors of the inositol 1,4,5-trisphosphate or ryanodine channels. However, NAADP-elicited calcium release was inhibited by L-type calcium channel blockers and by alkaline phosphatase treatment of NAADP. NAADP also promotes specific microsomal calcium release in rat vascular smooth muscle cells, cardiac myocytes, fibroblasts and a human leukaemia cell line, indicating that the capacity for NAADP-induced calcium release is widespread in mammalian cells. We propose that NAADP may be an important regulator of intracellular calcium in many mammalian tissues.
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Affiliation(s)
- A N Yusufi
- Renal Pathophysiology Laboratory, Department of Physiology and Biophysics, Mayo Clinic, Mayo Medical School, Rochester, MN 55905, USA
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Cheng J, Yusufi ANK, Thompson MA, Chini EN, Grande JP. Nicotinic acid adenine dinucleotide phosphate: a new Ca2+ releasing agent in kidney. J Am Soc Nephrol 2001; 12:54-60. [PMID: 11134250 DOI: 10.1681/asn.v12154] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
Abstract
Nicotinic acid adenine dinucleotide phosphate (NAADP), a molecule derived from beta-NADP, has been shown to trigger Ca2+ release from intracellular stores of invertebrate eggs and mammalian cell microsomes. NAADP-induced Ca2+ release occurs through a mechanism distinct from that of inositol-1,4,5-trisphosphate- or cyclic ADP-ribose-elicited Ca2+ release. This study investigated whether NAADP can be synthesized in rat kidney. Extracts from glomeruli, mesangial cells, and papilla have high NAADP synthetic capacities. Conversely, synthesis of NAADP in kidney cortex was almost undetectable. Furthermore, 9-cis-retinoic acid significantly up-regulated NAADP synthesis in mesangial cells. Authenticity of NAADP biosynthesis in glomeruli was affirmed by HPLC analysis. NAADP stimulated Ca2+ release from mesangial cell microsomes through a pathway distinct from that of inositol-1,4,5-trisphosphate or cyclic ADP-ribose. NAADP-triggered Ca2+ release may play an important role in regulation of renal function.
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Affiliation(s)
- Jingfei Cheng
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, Minnesota
| | - Ahad N K Yusufi
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, Minnesota
| | - Michael A Thompson
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, Minnesota
| | - Eduardo N Chini
- Department of Anesthesiology, Mayo Clinic, Rochester, Minnesota
| | - Joseph P Grande
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, Minnesota
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Martin S, Laude-Lemaire I, Kerbiriou-Nabias D, Freyssinet JM, Martínez MC. Relation between phosphatidylserine exposure and store-operated Ca(2+) entry in stimulated cells. Biochem Biophys Res Commun 2000; 279:639-45. [PMID: 11118338 DOI: 10.1006/bbrc.2000.3980] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
A significant increase in intracellular Ca(2+) is required to trigger the remodeling of the cell plasma membrane. Scott syndrome is an extremely rare inherited disorder of the transmembrane migration of phosphatidylserine toward the exoplasmic leaflet in blood cells. We have recently reported a reduced capacitative Ca(2+) entry in Scott cells [Martínez et al. (1999) Biochemistry 38, 10092-10098]. We have investigated here the links between defective phosphatidylserine exposure and Ca(2+) signaling in Scott cells by focusing on the Ca(2+) entry following the emptying of intracellular stores. After depletion of caffeine- or thapsigargin-sensitive stores, Ca(2+) entry was lower in Scott compared to control lymphoblasts. However, the simultaneous depletion of both types of stores restored a normal Ca(2+) influx across the plasma membrane in Scott cells and phosphatidylserine externalization ability was improved concomitantly with capacitative Ca(2+) entry. These observations point to the essential role of capacitative Ca(2+) entry in the control of phosphatidylserine exposure of stimulated cells.
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Affiliation(s)
- S Martin
- Institut d'Hématologie et d'Immunologie, Faculté de Médecine, 4, rue Kirschleger, Strasbourg, 67085, France
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25
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Johnson JD, Chang JP. Function- and agonist-specific Ca2+signalling: The requirement for and mechanism of spatial and temporal complexity in Ca2+signals. Biochem Cell Biol 2000. [DOI: 10.1139/o00-012] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Calcium signals have been implicated in the regulation of many diverse cellular processes. The problem of how information from extracellular signals is delivered with specificity and fidelity using fluctuations in cytosolic Ca2+concentration remains unresolved. The capacity of cells to generate Ca2+signals of sufficient spatial and temporal complexity is the primary constraint on their ability to effectively encode information through Ca2+. Over the past decade, a large body of literature has dealt with some basic features of Ca2+-handling in cells, as well as the multiplicity and functional diversity of intracellular Ca2+stores and extracellular Ca2+influx pathways. In principle, physiologists now have the necessary information to attack the problem of function- and agonist-specificity in Ca2+signal transduction. This review explores the data indicating that Ca2+release from diverse sources, including many types of intracellular stores, generates Ca2+signals with sufficient complexity to regulate the vast number of cellular functions that have been reported as Ca2+-dependent. Some examples where such complexity may relate to neuroendocrine regulation of hormone secretion/synthesis are discussed. We show that the functional and spatial heterogeneity of Ca2+stores generates Ca2+signals with sufficient spatiotemporal complexity to simultaneously control multiple Ca2+-dependent cellular functions in neuroendocrine systems.Key words: signal coding, IP3receptor, ryanodine receptor, endoplasmic reticulum, Golgi, secretory granules, mitochondria, exocytosis.
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Ziegler M. New functions of a long-known molecule. Emerging roles of NAD in cellular signaling. EUROPEAN JOURNAL OF BIOCHEMISTRY 2000; 267:1550-64. [PMID: 10712584 DOI: 10.1046/j.1432-1327.2000.01187.x] [Citation(s) in RCA: 206] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Over the past decades, the pyridine nucleotides have been established as important molecules in signaling pathways, besides their well known function in energy transduction. Similarly to another molecule carrying such dual functions, ATP, NAD(P)+ may serve as substrate for covalent protein modification or as precursor of biologically active compounds. Protein modification is catalyzed by ADP-ribosyl transferases that attach the ADP-ribose moiety of NAD+ to specific amino-acid residues of the acceptor proteins. For a number of ADP ribosylation reactions the specific transferases and their target proteins have been identified. As a result of the modification, the biological activity of the acceptor proteins may be severely changed. The cell nucleus contains enzymes catalyzing the transfer of ADP-ribose polymers (polyADP-ribose) onto the acceptor proteins. The best known enzyme of this type is poly(ADP-ribose) polymerase 1 (PARP1), which has been implicated in the regulation of several important processes including DNA repair, transcription, apoptosis, neoplastic transformation and others. The second group of reactions leads to the synthesis of an unusual cyclic nucleotide, cyclic ADP-ribose (cADPR). Moreover, the enzymes catalyzing this reaction may also replace the nicotinamide of NADP+ by nicotinic acid resulting in the synthesis of nicotinic acid adenine dinucleotide phosphate (NAADP+). Both cADPR and NAADP+ have been reported to be potent intracellular calcium-mobilizing agents. In concert with inositol 1,4,5-trisphosphate, they participate in cytosolic calcium regulation by releasing calcium from intracellular stores.
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Affiliation(s)
- M Ziegler
- Freie Universität Berlin, Institut für Biochemie, Berlin, Germany.
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Chini EN, Dousa TP. Differential effect of glycolytic intermediaries upon cyclic ADP-ribose-, inositol 1',4',5'-trisphosphate-, and nicotinate adenine dinucleotide phosphate-induced Ca(2+) release systems. Arch Biochem Biophys 1999; 370:294-9. [PMID: 10510288 DOI: 10.1006/abbi.1999.1373] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
We investigated the effect of glycolytic pathway intermediaries upon Ca(2+) release induced by cyclic ADP-ribose (cADPR), inositol 1',4', 5-trisphosphate (IP(3)), and nicotinate adenine dinucleotide phosphate (NAADP) in sea urchin egg homogenate. Fructose 1,6, -diphosphate (FDP), at concentrations up to 8 mM, did not induce Ca(2+) release by itself in sea urchin egg homogenate. However, FDP potentiates Ca(2+) release mediated by agonists of the ryanodine channel, such as ryanodine, caffeine, and palmitoyl-CoA. Furthermore, glucose 6-phosphate had similar effects. FDP also potentiates activation of the ryanodine channel mediated by the endogenous nucleotide cADPR. The half-maximal concentration for cADPR-induced Ca(2+) release was decreased approximately 3.5 times by addition of 4 mM FDP. The reverse was also true: addition of subthreshold concentrations of cADPR sensitized the homogenates to FDP. The Ca(2+) release mediated by FDP in the presence of subthreshold concentrations of cADPR was inhibited by antagonists of the ryanodine channel, such as ruthenium red, and by the cADPR inhibitor 8-Br-cADPR. However, inhibition of Ca(2+) release induced by IP(3) or NAADP had no effect upon Ca(2+) release induced by FDP in the presence of low concentrations of cADPR. Furthermore, FDP had inhibitory effects upon Ca(2+) release induced by both IP(3) and NAADP. We propose that the state of cellular intermediary metabolism may regulate cellular Ca(2+) homeostases by switching preferential effects from one intracellular Ca(2+) release channel to another.
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Affiliation(s)
- E N Chini
- Department of Physiology and Biophysics, Mayo Clinic and Foundation, Rochester, Minnesota 55905, USA
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Bowden SE, Selyanko AA, Robbins J. The role of ryanodine receptors in the cyclic ADP ribose modulation of the M-like current in rodent m1 muscarinic receptor-transformed NG108-15 cells. J Physiol 1999; 519 Pt 1:23-34. [PMID: 10432336 PMCID: PMC2269486 DOI: 10.1111/j.1469-7793.1999.0023o.x] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
1. The role of cyclic ADP ribose and ryanodine receptors in the inhibition of the M-like current (IK(M,ng)) by acetylcholine was investigated in m1 muscarinic receptor-transformed mouse neuroblastoma-rat glioma hybrid (NG108-15) cells using patch-clamp techniques and calcium microfluorimetry. 2. Acetylcholine (1-100 microM) decreased IK(M,ng) by up to 55 %. Application, via the patch pipette, of the cyclic ADP ribose antagonists 8-amino-cyclic ADP ribose (10-100 microM) and 8-bromo-cyclic ADP ribose (100-1000 microM) reduced this inhibition of IK(M,ng) in a concentration-dependent manner. The half-maximal inhibition concentrations for 8-amino- cyclic ADP ribose and 8-bromo-cyclic ADP ribose were around 40 microM and 1 mM, respectively. 3. Neither of the cyclic ADP ribose antagonists altered the amplitude of IK(M,ng) per se, or the incidence of the concurrent Ca2+-activated K+ current (IIK(Ca)) activation, also mediated by acetylcholine. 4. The ryanodine receptor modulators ryanodine (1-10 microM) and Ruthenium Red (10 microM) did not alter IK(M,ng) amplitude or IK(M,ng) inhibition mediated by acetylcholine. There was a statistically significant increase in the proportion of cells showing outward currents in the presence of Ruthenium Red. 5. Intracellular calcium levels measured with fura-2 microfluorimetry were increased with low concentrations of ryanodine (1 microM), more consistently with caffeine (10 mM), and in almost every case with both bradykinin (300 nM) and acetylcholine (100 microM). Caffeine-, but not bradykinin-evoked responses were abolished by preincubation with ryanodine (10 microM). 6. The fast 'rundown rate' of the M-current recorded in rat superior cervical ganglion cells under whole-cell conditions precluded an investigation of the effects of intracellular dialysis of cyclic ADP ribose. However, when cyclic ADP ribose (5 microM) was applied directly to the cytoplasmic face of inside-out membrane patches excised from rat superior cervical ganglion cells containing M-channels, it had no effect on the main parameters of single channel activity (conductance, mean open time or frequency of opening). 7. These results indicate that cyclic ADP ribose acts on a specific intracellular site to mediate IK(M,ng) inhibition. However, unlike previously established effects of cyclic ADP ribose, the ryanodine receptor is not required, suggesting that another molecular target may be involved. Studies at the single channel level indicate that cyclic ADP ribose may not act directly on the M-channels in inside-out patches.
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Affiliation(s)
- S E Bowden
- Pharmacology Group, Biomedical Sciences Division, King's College London, Manresa Road, London SW3 6LX, UK
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Migaud ME, Pederick RL, Bailey VC, Potter BV. Probing Aplysia californica adenosine 5'-diphosphate ribosyl cyclase for substrate binding requirements: design of potent inhibitors. Biochemistry 1999; 38:9105-14. [PMID: 10413485 DOI: 10.1021/bi9903392] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Readily synthesized nicotinamide adenine dinucleotide (NAD(+)) analogues have been used to investigate aspects of the cyclization of NAD(+) to cyclic adenosine 5'-O-diphosphate ribose (cADPR) catalyzed by the enzyme adenosine 5'-O-diphosphate (ADP) ribosyl cyclase and to produce the first potent inhibitors of this enzyme. In all cases, inhibition of Aplysia californica cyclase by various substrate analogues was found to be competitive while inhibition by nicotinamide exhibited mixed-behavior characteristics. Nicotinamide hypoxanthine dinucleotide (NHD(+)), nicotinamide guanine dinucleotide (NGD(+)), C1'-m-benzamide adenine dinucleotide (Bp(2)A), and C1'-m-benzamide nicotinamide dinucleotide (Bp(2)N) were found to be nanomolar potency inhibitors with inhibition constants of 70, 143, 189, and 201 nM, respectively. However, NHD(+) and NGD(+) are also known substrates and are slowly converted to cyclic products, thus preventing their further use as inhibitors. The symmetrical bis-nucleotides, bis-adenine dinucleotide (Ap(2)A), bis-hypoxanthine dinucleotide (Hp(2)H), and bis-nicotinamide dinucleotide (Np(2)N), exhibited micromolar competitive inhibition, with Ap(2)A displaying the greatest affinity for the enzyme. 2',3'-Di-O-acetyl nicotinamide adenine dinucleotide (AcONAD(+)) was not a substrate for the A. californica cyclase but also displayed some inhibition at a micromolar level. Finally, inhibition of the cyclase by adenosine 5'-O-diphosphate ribose (ADPR) and inosine 5'-O-diphosphate ribose (IDPR) was observed at millimolar concentration. The nicotinamide aromatic ring appears to be the optimal motif required for enzymatic recognition, while modifications of the 2'- and 3'-hydroxyls of the nicotinamide ribose seem to hamper binding to the enzyme. Stabilizing enzyme/inhibitor interactions and the inability of the enzyme to release unprocessed material are both considered to explain nanomolar inhibition. Recognition of inhibitors by other ADP ribosyl cyclases has also been investigated, and this study now provides the first potent nonhydrolyzable sea urchin ADP ribosyl cyclase and cADPR hydrolase inhibitor Bp(2)A, with inhibition observed at the micromolar and nanomolar level, respectively. The benzamide derivatives did not inhibit CD38 cyclase or hydrolase activity when NGD(+) was used as substrate. These results emphasize the difference between CD38 and other enzymes in which the cADPR cyclase activity predominates.
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Affiliation(s)
- M E Migaud
- Wolfson Laboratory of Medicinal Chemistry, Department of Pharmacy and Pharmacology, University of Bath, U.K
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31
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Chidambaram N, Chang CF. NADP+-Dependent internalization of recombinant CD38 in CHO cells. Arch Biochem Biophys 1999; 363:267-72. [PMID: 10068448 DOI: 10.1006/abbi.1999.1103] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
CD38 is a 46-kDa type II transmembrane glycoprotein that catalyses the synthesis of cyclic ADP-ribose (cADPR) from NAD+. cADPR is a second messenger known to regulate intracellular Ca2+-induced Ca2+-release (CICR). A recent study has revealed that CD38 in Namalwa B cells undergoes internalization upon exposure to external NAD+. In this study, recombinant rat CD38 was expressed in Chinese hamster ovary (CHO) cells and the possibility of the protein to undergo internalization upon exposure to a substrate analog NADP+ was examined. It was found that such treatment of CHO cells resulted in a decrease of ADP-ribosyl cyclase activity, as well as immunofluorescence of CD38 on the cell surface. The same treatment of CHO cells also resulted in intracellular clustering of CD38 molecules as revealed by confocal microscopic analysis. The internalized CD38 was purified using a streptavidin/biotin-based method and was found to exhibit both ADP-ribosyl cyclase and cADPR hydrolase activities. On immunoblot, the internalized CD38 appeared as a monomer of 46 kDa under reducing condition of SDS-PAGE. Our data demonstrate that NADP+ can efficiently induce internalization of CD38, a process that may be important in the production of cADPR intracellularly to regulate CICR.
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Affiliation(s)
- N Chidambaram
- Faculty of Medicine, The National University of Singapore, Singapore, 119260
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32
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Chini EN, Liang M, Dousa TP. Differential effect of pH upon cyclic-ADP-ribose and nicotinate-adenine dinucleotide phosphate-induced Ca2+ release systems. Biochem J 1998; 335 ( Pt 3):499-504. [PMID: 9794787 PMCID: PMC1219808 DOI: 10.1042/bj3350499] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
We investigated the pH dependence and the effects of thimerosal and dithiothreitol (DTT) upon the Ca2+ release induced by cADP-ribose (cADPR) and nicotinate-adenine dinucleotide phosphate (NAADP) in sea urchin egg homogenates. Both Ca2+ release triggered by cADPR and the binding of [3H]cADPR to sea urchin egg homogenates were decreased by alkalization of the assay media from pH 7.2 to 8.9. In contrast, NAADP-triggered Ca2+ release was not influenced by changes in pH. The Ca2+ release induced by cADPR was potentiated by thimerosal and inhibited by DTT, but neither thimerosal nor DTT had any effect upon the Ca2+ release induced by NAADP. We conclude that cADPR-sensitive Ca2+-release mechanisms are dependent on pH of the assay media and are sensitive to thiol group modification. On the other hand, these functional properties are not shared by NAADP-regulated Ca2+ channels.
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Affiliation(s)
- E N Chini
- Mayo Clinic and Foundation, Department of Physiology and Biophysics and Department of Anesthesiology, 200 First Street, SW, 901 Guggenheim Bldg., Rochester, MN 55905, USA
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33
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Wilding M, Russo GL, Galione A, Marino M, Dale B. ADP-ribose gates the fertilization channel in ascidian oocytes. THE AMERICAN JOURNAL OF PHYSIOLOGY 1998; 275:C1277-83. [PMID: 9814976 DOI: 10.1152/ajpcell.1998.275.5.c1277] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
We report an ion channel in the plasma membrane of unfertilized oocytes of the ascidian Ciona intestinalis that is directly gated by the second messenger ADP-ribose. The ion channel is permeable to Ca2+ and Na+ and is characterized by a reversal potential between 0 and +20 mV and a unitary conductance of 140 pS. Preinjection of the Ca2+ chelator 1,2-bis(2-aminophenoxy)ethane-N,N,N',N'-tetraacetic acid (BAPTA) or antagonists of intracellular Ca2+ release channels into oocytes did not inhibit the ADP-ribose current, demonstrating that the channel is activated in a Ca2+-independent manner. Both the fertilization current and the current induced by the injection of nicotinamide nucleotides are blocked by nicotinamide, suggesting that the ADP-ribose channel is activated at fertilization in a nicotinamide-sensitive manner. These data suggest that ascidian sperm trigger the hydrolysis of nicotinamide nucleotides in the oocyte to ADP-ribose and that this mechanism is responsible for the production of the fertilization current.
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Affiliation(s)
- M Wilding
- Stazione Zoologica "Anton Dohrn," 80121 Naples, Italy
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34
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Durner J, Wendehenne D, Klessig DF. Defense gene induction in tobacco by nitric oxide, cyclic GMP, and cyclic ADP-ribose. Proc Natl Acad Sci U S A 1998; 95:10328-33. [PMID: 9707647 PMCID: PMC21508 DOI: 10.1073/pnas.95.17.10328] [Citation(s) in RCA: 739] [Impact Index Per Article: 28.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Reactive oxygen species are believed to perform multiple roles during plant defense responses to microbial attack, acting in the initial defense and possibly as cellular signaling molecules. In animals, nitric oxide (NO) is an important redox-active signaling molecule. Here we show that infection of resistant, but not susceptible, tobacco with tobacco mosaic virus resulted in enhanced NO synthase (NOS) activity. Furthermore, administration of NO donors or recombinant mammalian NOS to tobacco plants or tobacco suspension cells triggered expression of the defense-related genes encoding pathogenesis-related 1 protein and phenylalanine ammonia lyase (PAL). These genes were also induced by cyclic GMP (cGMP) and cyclic ADP-ribose, two molecules that can serve as second messengers for NO signaling in mammals. Consistent with cGMP acting as a second messenger in tobacco, NO treatment induced dramatic and transient increases in endogenous cGMP levels. Furthermore, NO-induced activation of PAL was blocked by 6-anilino-5,8-quinolinedione and 1H-(1,2,4)-oxadiazole[4,3-a]quinoxalin-1-one, two inhibitors of guanylate cyclase. Although 6-anilino-5,8-quinolinedione fully blocked PAL activation, inhibition by 1H-(1,2,4)-oxadiazole[4, 3-a]quinoxalin-1-one was not entirely complete, suggesting the existence of cGMP-independent, as well as cGMP-dependent, NO signaling. We conclude that several critical players of animal NO signaling are also operative in plants.
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Affiliation(s)
- J Durner
- Waksman Institute and Department of Molecular Biology and Biochemistry, Rutgers, State University of New Jersey, 190 Frelinghuysen Road, Piscataway, NJ 08854-8020, USA
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35
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Korkut C, Yalçintepe L, Kiremit-Korkut N, Uzun-Altinöz S, Işsever S, Gümüşel F, Tiryaki D, Bermek E. Serum proteins with NAD+ glycohydrolase activity and anti-CD38 reactivity--elevated levels in serum of tumour patients. Cancer Lett 1998; 126:105-9. [PMID: 9563655 DOI: 10.1016/s0304-3835(97)00531-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
NAD+ glycohydrolase activities in serum samples from cancer patients were two- to three-fold higher than the activities in samples from healthy controls. SDS-PAGE analysis of serum samples followed by Western blotting revealed the presence of two proteins of approximately 45 and approximately 21 kDa that were immunoreactive with human CD38-specific monoclonal antibodies T16, HIT2 and OKT 10. These proteins appeared to be more abundant in serum from cancer patients. NAD+ glycohydrolase activity in serum could be enriched by immunoaffinity chromatography by using T16-Sepharose 4B. The results suggest that the relative abundance of proteins immunologically related to CD38 may account for the elevated levels of glycohydrolase activities in serum of tumour patients.
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Affiliation(s)
- C Korkut
- Department of Biophysics, I.U. Istanbul Faculty of Medicine, Capa-Istanbul, Turkey
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36
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da Silva CP, Potter BV, Mayr GW, Guse AH. Quantification of intracellular levels of cyclic ADP-ribose by high-performance liquid chromatography. JOURNAL OF CHROMATOGRAPHY. B, BIOMEDICAL SCIENCES AND APPLICATIONS 1998; 707:43-50. [PMID: 9613932 DOI: 10.1016/s0378-4347(97)00622-1] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
A combined two-step high-performance liquid chromatographic (HPLC) method was developed for the analysis of endogenous levels of cyclic adenosine diphosphoribose (cADPR) in cell extracts. The detection sensitivity for cADPR was about 10 pmol. Linearity of the HPLC detection system was demonstrated in the range of 10 pmol up to 2 nmol. The method was validated in terms of within-day and between-day reproducibility of retention times and peak areas of standard nucleotides. The method was applied to the analysis of endogenous cADPR in human T cell lines. Sequential separation of perchloric acid extracts from cells on strong anion-exchange and reversed-phase ion-pair HPLC resulted in a single symmetrical peak co-eluting with standard cADPR. The identity of this endogenous material was further confirmed by its ability to be converted to ADPR upon heating the cell samples at 80 degrees C for 2 h. Recoveries of the combined perchloric acid extraction-HPLC analysis procedures were 48.3 +/- 10.2%. The determined intracellular concentrations of cADPR in quiescent Jurkat and HPB. ALL human T cells were 198 +/- 41 and 28 +/- 9 pmol/10(8) cells, respectively. In conclusion, a non-radioactive HPLC method presenting a specificity and sensitivity suitable for precise quantification of cADPR in cell extracts was developed.
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Affiliation(s)
- C P da Silva
- University of Hamburg, Institute of Physiological Chemistry, Department of Enzyme Chemistry, Germany
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37
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Affiliation(s)
- F C Mooren
- Medizinische Klinik und Poliklinik B, Westfälische Wilhelm-Universität, Münster, Germany
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38
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Mothet JP, Fossier P, Meunier FM, Stinnakre J, Tauc L, Baux G. Cyclic ADP-ribose and calcium-induced calcium release regulate neurotransmitter release at a cholinergic synapse of Aplysia. J Physiol 1998; 507 ( Pt 2):405-14. [PMID: 9518701 PMCID: PMC2230796 DOI: 10.1111/j.1469-7793.1998.405bt.x] [Citation(s) in RCA: 83] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
1. Presynaptic injection of cyclic ADP-ribose (cADPR), a modulator of the ryanodine receptor, increased the postsynaptic response evoked by a presynaptic spike at an identified cholinergic synapse in the buccal ganglion of Aplysia californica. 2. The statistical analysis of long duration postsynaptic responses evoked by square depolarizations of the voltage-clamped presynaptic neurone showed that the number of evoked acetylcholine (ACh) quanta released was increased following cADPR injection. 3. Overloading the presynaptic neurone with cADPR led to a transient increase of ACh release followed by a depression. 4. cADPR injections did not modify the presynaptic Ca2+ current triggering ACh release. 5. Ca2+ imaging with the fluorescent dye rhod-2 showed that cADPR injection rapidly increased the free intracellular Ca2+ concentration indicating that the effects of cADPR on ACh release might be related to Ca2+ release from intracellular stores. 6. Ryanodine and 8-amino-cADPR, a specific antagonist of cADPR, decreased ACh release. 7. ADP-ribosyl cyclase, which cyclizes NAD+ into cADPR, was present in the presynaptic neurone as shown by reverse transcriptase-polymerase chain reaction experiments. 8. Application of NAD+, the substrate of ADP-ribosyl cyclase, increased ACh release and this effect was prevented by both ryanodine and 8-amino-cADPR. 9. These results support the view that Ca(2+)-induced Ca2+ release might be involved in the build-up of the Ca2+ concentration which triggers ACh release, and thus that cADPR might have a role in transmitter release modulation.
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Affiliation(s)
- J P Mothet
- Laboratoire de Neurobiologie Cellulaire et Moléculaire, CNRS, Gif-sur-Yvette, France
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39
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Lund FE, Cockayne DA, Randall TD, Solvason N, Schuber F, Howard MC. CD38: a new paradigm in lymphocyte activation and signal transduction. Immunol Rev 1998; 161:79-93. [PMID: 9553766 DOI: 10.1111/j.1600-065x.1998.tb01573.x] [Citation(s) in RCA: 103] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
CD38 is a type II transmembrane glycoprotein that is extensively expressed on cells of hematopoietic and non-hematopoietic lineage. Although the intracellular domain of CD38 is not homologous to any known proteins, the extracellular domain of CD38 is structurally related to enzymes in the ADP-ribosyl cyclase family. The structural homology between CD38 and the cyclase family members extends to functional homology, as the extracellular domain of CD38 can mediate the catalysis of beta-NAD+ into nicotinamide, ADP-ribose (ADPR) and, to a lesser extent, into cyclic ADPR-ribose (cADPR). Extensive investigation in other systems has shown that cADPR is an important regulator of intracellular Ca2+ release. Since engagement of CD38 on hematopoietic cells with anti-CD38 Abs has been shown to have potent effects on a number of in vitro cellular responses, we have speculated that cADPR might control CD38-mediated signal transduction. However, it has been difficult to understand how a mediator which is typically an intracellular signaling molecule could potentiate its effects from an extracellular location, thus posing a dilemma which pertains to all ecto-enzymes and the mechanisms by which they regulate signal transduction and cellular processes. This review describes the biologic properties of murine CD38, its role in humoral immunity, and its signal transduction properties in B lymphocytes. We suggest that signaling through CD38 represents a new paradigm in lymphocyte signal transduction and is predicated upon extracellular, rather than intracellular, crosstalk.
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Affiliation(s)
- F E Lund
- Trudeau Institute, Saranac Lake, New York 12983, USA.
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40
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Pérez CF, Marengo JJ, Bull R, Hidalgo C. Cyclic ADP-ribose activates caffeine-sensitive calcium channels from sea urchin egg microsomes. THE AMERICAN JOURNAL OF PHYSIOLOGY 1998; 274:C430-9. [PMID: 9486133 DOI: 10.1152/ajpcell.1998.274.2.c430] [Citation(s) in RCA: 39] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Adenosine 5'-cyclic diphosphoribose [cyclic ADP-ribose (cADPR)], a metabolite of NAD+ that promotes Ca2+ release from sea urchin egg homogenates and microsomal fractions, has been proposed to act as an endogenous agonist of Ca2+ release in sea urchin eggs. We describe experiments showing that a microsomal fraction isolated from Tetrapigus nyger sea urchin eggs displayed Ca(2+)-selective single channels with conductances of 155.0 +/- 8.0 pS in asymmetric Cs+ solutions and 47.5 +/- 1.1 pS in asymmetric Ca2+ solutions. These channels were sensitive to stimulation by Ca2+, ATP, and caffeine, but not inositol 1,4,5-trisphosphate, and were inhibited by ruthenium red. The channels were also activated by cADP-ribose in a Ca(2+)-dependent fashion. Calmodulin and Mg2+, but not heparin, modulated channel activity in the presence of cADP-ribose. We propose that these Ca2+ channels constitute the intracellular Ca(2+)-induced Ca2+ release pathway that is activated by cADP-ribose in sea urchin eggs.
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Affiliation(s)
- C F Pérez
- Instituto de Ciencias Biomédicas, Facultad de Medicina, Universidad de Chile, Santiago, Chile
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41
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Abstract
Ca2+ mobilization as a signaling mechanism has been placed on center stage with the discovery of the first Ca2+ messenger, inositol trisphosphate (IP3). This article focuses on two new Ca2+ release activators, which mobilize internal Ca2+ stores via mechanisms totally independent of IP3. They are cyclic ADP-ribose (cADPR) and nicotinic acid dinucleotide phosphate (NAADP), metabolites derived respectively from NAD and NADP. Major advances in the past decade in the understanding of these two novel signaling mechanisms are chronologically summarized.
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Affiliation(s)
- H C Lee
- Department of Physiology, University of Minnesota, Minneapolis 55455, USA.
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42
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Grumetto L, Wilding M, De Simone ML, Tosti E, Galione A, Dale B. Nitric oxide gates fertilization channels in ascidian oocytes through nicotinamide nucleotide metabolism. Biochem Biophys Res Commun 1997; 239:723-8. [PMID: 9367836 DOI: 10.1006/bbrc.1997.7537] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
In this paper we use the nitric oxide (NO) donor sodium nitroprusside to examine the response of the unfertilised oocyte of the ascidian Ciona intestinalis to nitric oxide. We show that the release of NO triggers an inward current that displays similar properties to the ascidian fertilisation current. Furthermore, the production of NO causes the release of intracellular calcium through a ruthenium-red sensitive mechanism. Our data suggest that these effects are due to the stimulation of nicotinamide nucleotide metabolism, but the active second messenger is not cyclic adenosine diphosphate ribose (cADPr). Finally, we show that NO production increases at fertilisation. The results suggest that ascidian sperm trigger the release of NO and this second messenger causes the breakdown of nicotinamide nucleotides leading to the production of a second messenger which induces the fertilisation current and may assist in the production of the increase in calcium.
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Affiliation(s)
- L Grumetto
- Dipartimento di Chimica Farmaceutica e Tossicologica, Facoltà di Farmacia, Università Federico II, Naples, Italy
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43
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Morita K, Kitayama S, Dohi T. Stimulation of cyclic ADP-ribose synthesis by acetylcholine and its role in catecholamine release in bovine adrenal chromaffin cells. J Biol Chem 1997; 272:21002-9. [PMID: 9261101 DOI: 10.1074/jbc.272.34.21002] [Citation(s) in RCA: 79] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
Cyclic ADP-ribose (cADPR) is suggested to be a novel messenger of ryanodine receptors in various cellular systems. However, the regulation of its synthesis in response to cell stimulation and its functional roles are still unclear. We examined the physiological relevance of cADPR to the messenger role in stimulation-secretion coupling in cultured bovine adrenal chromaffin cells. Sensitization of Ca2+-induced Ca2+ release (CICR) and stimulation of catecholamine release by cADPR in permeabilized cells were demonstrated along with the contribution of CICR to intracellular Ca2+ dynamics and secretory response during stimulation of intact chromaffin cells. ADP-ribosyl cyclase was activated in the membrane preparation from chromaffin cells stimulated with acetylcholine (ACh), excess KCl depolarization, and 8-bromo-cyclic-AMP. ACh-induced activation of ADP-ribosyl cyclase was dependent on the influx of Ca2+ into cells and on the activation of cyclic AMP-dependent protein kinase. These and previous findings that ACh activates adenylate cyclase by Ca2+ influx in chromaffin cells suggested that ACh induces activation of ADP-ribosyl cyclase through Ca2+ influx and cyclic AMP-mediated pathways. These results provide evidence that the synthesis of cADPR is regulated by cell stimulation, and the cADPR/CICR pathway forms a significant signal transduction for secretion.
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Affiliation(s)
- K Morita
- Department of Pharmacology, Hiroshima University School of Dentistry, 1-2-3 Kasumi, Minami-ku, Hiroshima 734, Japan
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44
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Hagen T, Ziegler M. Detection and identification of NAD-catabolizing activities in rat tissue homogenates. BIOCHIMICA ET BIOPHYSICA ACTA 1997; 1340:7-12. [PMID: 9217009 DOI: 10.1016/s0167-4838(97)00021-6] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
NAD may be degraded in several ways. A large number of investigations have shown that at least those catabolic routes which involve the formation of ADP-ribose are related to regulatory processes. In this study a rapid assay was utilized that permits identification of NAD-degrading enzymes directly in sodium dodecylsulfate polyacrylamide gels. Enzymatic activities were recovered by washing the gels in the presence of mild detergents such as lauryl dimethylamine N-oxide or Triton X-100. Subsequent incubation of the gels in the presence of the fluorescent analog 1,N6 etheno-NAD visualized NAD-degrading enzymes. Following excision of the fluorescent bands from the gels, the actual activity of the proteins was established by incubating the gel slices with 14C-labeled NAD and subsequent product analysis by thin layer chromatography (TLC). Homogenates from rat renal cortex and spleen were analyzed by this procedure. While in the spleen homogenate only a single band could be 'activity-stained', in the kidney three bands were detected. Kidney proteins with apparent molecular masses of about 210,000 and 105,000 Da were identified as phosphodiesterase and NAD pyrophosphatase (alkaline phosphodiesterase I), respectively. The third protein exhibited an apparent molecular mass of 41,000. The spleen protein (apparent molecular mass 45,000 Da) cleaved NAD to nicotinamide and ADP-ribose identifying it as NAD glycohydrolase. The procedure is suitable to screen for NAD-converting activities in crude extracts. It is specific for proteins which function as monomers or homo-oligomers.
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Affiliation(s)
- T Hagen
- Institut für Biochemie, Freie Universität Berlin, Germany
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45
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Wilding M, Kyozuka K, Russo GL, Tosti E, Dale B. A soluble extract from human spermatozoa activates ascidian oocytes. Dev Growth Differ 1997; 39:329-36. [PMID: 9227899 DOI: 10.1046/j.1440-169x.1997.t01-2-00008.x] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
A soluble extract from human spermatozoa induced calcium oscillations and extrusion of the first polar body when injected into oocytes of the ascidian Ciona intestinalis. The properties of calcium oscillations and time of polar body extrusion precisely mimic oocyte activation induced by C. intestinalis sperm or sperm extracts. The data suggest that human sperm extracts can activate oocytes of different phyla by the same mechanism as homologous spermatozoa. Injection of inositol 1,4,5-trisphosphate (IP3) into C. intestinalis oocytes mimicked to some extent the initial stages of oocyte activation, but the results demonstrate that ascidian oocyte activation by human sperm extract cannot be explained solely in terms of IP3-induced calcium release. Injection of other calcium releasing second messengers, cyclic adenosine diphosphate ribose, or calcium ions, does not lead to oocyte activation or release intracellular calcium in ascidian oocyte. It was concluded that human spermatozoa contain one or more molecules than can trigger intracellular calcium release in oocytes from different phyla.
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Affiliation(s)
- M Wilding
- Stazione Zoologica Anton Dohrn, Napoli, Italy
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46
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Genschik P, Hall J, Filipowicz W. Cloning and characterization of the Arabidopsis cyclic phosphodiesterase which hydrolyzes ADP-ribose 1'',2''-cyclic phosphate and nucleoside 2',3'-cyclic phosphates. J Biol Chem 1997; 272:13211-9. [PMID: 9148938 DOI: 10.1074/jbc.272.20.13211] [Citation(s) in RCA: 39] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
In eukaryotic cells, pre-tRNAs spliced by a pathway that produces a 3',5'-phosphodiester, 2'-phosphomonoester linkage contain a 2'-phosphate group adjacent to the tRNA anticodon. This 2'-phosphate is transferred to NAD to give adenosine diphosphate (ADP)-ribose 1", 2"-cyclic phosphate (Appr>p), which is subsequently metabolized to ADP-ribose 1"-phosphate (Appr-1"p). The latter reaction is catalyzed by a cyclic phosphodiesterase (CPDase), previously identified in yeast and wheat. In the work presented here, we describe cloning of the Arabidopsis cDNA encoding the 20-kDa CPDase that hydrolyzes Appr>p to Appr-1"p. Properties of the bacterially overexpressed and purified Arabidopsis enzyme are similar to those of wheat CPDase. In addition to their transformation of Appr>p, both enzymes hydrolyze nucleoside 2',3'-cyclic phosphates to nucleoside 2'-phosphates. For the Arabidopsis CPDase, the apparent Km values for Appr>p, A>p, C>p, G>p, and U>p are 1.35, 1.34, 2.38, 16.86, and 17.67 mM, respectively. Southern analysis indicated that CPDase in Arabidopsis is encoded by a single copy gene that is expressed, at different levels, in all Arabidopsis organs that were analyzed. Indirect immunofluorescence, performed with transfected protoplasts, showed that CPDase is localized in the cytoplasm. Based on substrate specificity and products generated, the plant enzyme differs from other known cyclic phosphodiesterases. The Arabidopsis CPDase does not have recognizable structural similarity or motifs in common with proteins deposited in public data bases.
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Affiliation(s)
- P Genschik
- Friedrich Miescher-Institut, P. O. Box 2543, 4002 Basel, Switzerland
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47
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Guse AH, da Silva CP, Weber K, Armah CN, Ashamu GA, Schulze C, Potter BV, Mayr GW, Hilz H. 1-(5-phospho-beta-D-ribosyl)2'-phosphoadenosine 5'-phosphate cyclic anhydride induced Ca2+ release in human T-cell lines. EUROPEAN JOURNAL OF BIOCHEMISTRY 1997; 245:411-7. [PMID: 9151972 DOI: 10.1111/j.1432-1033.1997.t01-1-00411.x] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
1-(5-Phospho-beta-D-ribosyl)2'-phosphoadenosine 5'-phosphate cyclic anhydride [2'-phospho-cyclic ADP-ribose, cAdo(2')P(5')PP-Rib] was prepared enzymatically from NADP+ using ADP-ribosyl-cyclase from Aplysia californica. The product was purified by HPLC and characterized by NMR and mass spectroscopy, by conversion to 1-(5-phospho-beta-D-ribosyl)adenosine 5'-phosphate cyclic anhydride (cADP-Rib) by alkaline phosphatase and by resistance to snake venom phosphodiesterase. cAdo-(2')P(5')PP-Rib dose-dependently released Ca2+ from an intracellular, non-endoplasmic reticular Ca2+ pool of permeabilized Jurkat and HPB. ALL T-lymphocytes. In contrast, the closely related compounds 1-(5-phospho-beta-D-ribosyl)3'phosphoadenosine 5'-phosphate cyclic anhydride and 1-(5-phospho-beta-D-ribosyl)cyclic 2',3'-phosphoadenosine 5'-phosphate cyclic anhydride did not induce Ca2+-release from permeabilized T cells. The Ca2+ pool sensitive to cAdo(2')P(5')PP-Rib partially overlapped with the Ca2+ pool sensitive to cADP-Rib recently described in T cells [Guse, A. H., da Silva, C. P., Emmrich, F., Ashamu, G. A., Potter, B. V. L. & Mayr, G. W. (1995) Characterization of cyclic adenosine diphosphate-ribose-induced Ca2+-release in T-lymphocyte cell lines, J. Immunol. 155, 3353-3359]. Control experiments suggest that the results were neither due to Ca2+ contaminations in the cADP-Rib preparation nor to catabolism of cAdo(2')P(5')PP-Rib to cADP-Rib.
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Affiliation(s)
- A H Guse
- Institut für Physiologische Chemie, Abteilung für Enzymchemie, Universität Hamburg, Germany.
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48
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Abstract
Caffeine increases intracellular Ca2+ concentrations ([Ca2+]i) in a variety of cell types by triggering the mobilization of Ca2+ from intracellular Ca2+ stores. Caffeine also can change [Ca2+]i by affecting Ca2+ influx through voltage-operated Ca2+ channels (VOCCs). In the present study, we investigated the effects of caffeine on Ca2+ entry in GH4C1 pituitary cells. Pretreatment of the cells with caffeine attenuated the high K+-evoked influx of 45Ca2+ in a dose-dependent manner. This inhibition was not secondary to the caffeine-evoked elevation of [Ca2+]i because caffeine was able to inhibit VOCCs also in the presence of the intracellular Ca2+ chelator BAPTA. However, the inhibitory effect of caffeine on 45Ca2+ entry appeared to be dependent on the degree of depolarization of the plasma membrane. Only in cells depolarized with relatively high concentrations of K+ (20, 35, and 50 mM) was the caffeine-induced inhibition observed. A similar inhibitory effect of caffeine on the high K+-evoked calcium and barium entry was observed in experiments using Fura 2. Neither IBMX, forskolin nor dibutyryl cAMP reduced the enhanced [Ca2+]i induced by 50 mM K+, suggesting that the effect of caffeine was not due to increased intracellular cAMP. Furthermore, high doses of caffeine inhibited the plateau level of the TRH-induced increase in [Ca2+]i, which is caused partly by influx of Ca2+ through VOCCs. The inhibitory effect of caffeine was, in part, due to an hyperpolarization of the plasma membrane observed at high doses of caffeine. On the other hand, low doses of caffeine enhanced depolarization-evoked Ba2+ entry as well as the TRH-evoked plateau level of [Ca2+]i. We conclude that caffeine has a dual effect on Ca2+ entry through activated VOCCs in GH4C1 cells: at low concentrations caffeine enhances Ca2+ entry, whereas high concentrations of caffeine block Ca2+ entry.
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Affiliation(s)
- L Karhapää
- Department of Biosciences, University of Helsinki, Finland
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49
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50
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Ziegler M, Jorcke D, Schweiger M. Metabolism of cyclic ADP-ribose: a new role for NAD+ glycohydrolases. Rev Physiol Biochem Pharmacol 1997; 131:89-126. [PMID: 9204690 DOI: 10.1007/3-540-61992-5_6] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- M Ziegler
- Institut für Biochemie, Freie Universität Berlin, Germany
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