Group IIA secretory phospholipase A₂ (GIIA) mediates apoptotic death during NMDA receptor activation in rat primary cortical neurons

J. Neurochem. (2010) 112, 1574-1583. Phospholipases A₂ (PLA₂) participate in neuronal death signalling pathways because of their ability to release lipid mediators, although the contribution of each isoform and mechanism of neurotoxicity are still elusive. Using a novel fluorogenic method to assess...

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Veröffentlicht in:Journal of neurochemistry 2010-03, Vol.112 (6), p.1574-1583
Hauptverfasser: Chiricozzi, Elena, Fernandez-Fernandez, Seila, Nardicchi, Vincenza, Almeida, Angeles, Bolaños, Juan Pedro, Goracci, Gianfrancesco
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container_issue 6
container_start_page 1574
container_title Journal of neurochemistry
container_volume 112
creator Chiricozzi, Elena
Fernandez-Fernandez, Seila
Nardicchi, Vincenza
Almeida, Angeles
Bolaños, Juan Pedro
Goracci, Gianfrancesco
description J. Neurochem. (2010) 112, 1574-1583. Phospholipases A₂ (PLA₂) participate in neuronal death signalling pathways because of their ability to release lipid mediators, although the contribution of each isoform and mechanism of neurotoxicity are still elusive. Using a novel fluorogenic method to assess changes in a PLA₂ activity by flow cytometry, here we show that the group IIA secretory phospholipase A₂ isoform (GIIA) was specifically activated in cortical neurons following stimulation of N-methyl- d-aspartate glutamate receptor subtype (NMDAR). For activation, GIIA required Ca²⁺ and reactive oxygen/nitrogen species, and inhibition of its activity fully prevented NMDAR-mediated neuronal apoptotic death. Superoxide, nitric oxide or peroxynitrite donors stimulated GIIA activity, which mediated neuronal death. Intriguingly, we also found that GIIA activity induced mitochondrial superoxide production after NMDAR stimulation. These results reveal a novel role for GIIA in excitotoxicity both as target and producer of superoxide in a positive-loop of activation that may contribute to the propagation of neurodegeneration.
doi_str_mv 10.1111/j.1471-4159.2010.06567.x
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Neurochem. (2010) 112, 1574-1583. Phospholipases A₂ (PLA₂) participate in neuronal death signalling pathways because of their ability to release lipid mediators, although the contribution of each isoform and mechanism of neurotoxicity are still elusive. Using a novel fluorogenic method to assess changes in a PLA₂ activity by flow cytometry, here we show that the group IIA secretory phospholipase A₂ isoform (GIIA) was specifically activated in cortical neurons following stimulation of N-methyl- d-aspartate glutamate receptor subtype (NMDAR). For activation, GIIA required Ca²⁺ and reactive oxygen/nitrogen species, and inhibition of its activity fully prevented NMDAR-mediated neuronal apoptotic death. Superoxide, nitric oxide or peroxynitrite donors stimulated GIIA activity, which mediated neuronal death. Intriguingly, we also found that GIIA activity induced mitochondrial superoxide production after NMDAR stimulation. These results reveal a novel role for GIIA in excitotoxicity both as target and producer of superoxide in a positive-loop of activation that may contribute to the propagation of neurodegeneration.</description><identifier>ISSN: 0022-3042</identifier><identifier>EISSN: 1471-4159</identifier><identifier>DOI: 10.1111/j.1471-4159.2010.06567.x</identifier><identifier>PMID: 20067579</identifier><identifier>CODEN: JONRA9</identifier><language>eng</language><publisher>Oxford, UK: Oxford, UK : Blackwell Publishing Ltd</publisher><subject>Ageing, cell death ; Animals ; Annexin A5 - metabolism ; Apoptosis ; Apoptosis - drug effects ; Apoptosis - physiology ; Biological and medical sciences ; Calcium - metabolism ; Cell physiology ; Cells, Cultured ; Central nervous system ; Central neurotransmission. Neuromudulation. 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Neurochem. (2010) 112, 1574-1583. Phospholipases A₂ (PLA₂) participate in neuronal death signalling pathways because of their ability to release lipid mediators, although the contribution of each isoform and mechanism of neurotoxicity are still elusive. Using a novel fluorogenic method to assess changes in a PLA₂ activity by flow cytometry, here we show that the group IIA secretory phospholipase A₂ isoform (GIIA) was specifically activated in cortical neurons following stimulation of N-methyl- d-aspartate glutamate receptor subtype (NMDAR). For activation, GIIA required Ca²⁺ and reactive oxygen/nitrogen species, and inhibition of its activity fully prevented NMDAR-mediated neuronal apoptotic death. Superoxide, nitric oxide or peroxynitrite donors stimulated GIIA activity, which mediated neuronal death. Intriguingly, we also found that GIIA activity induced mitochondrial superoxide production after NMDAR stimulation. These results reveal a novel role for GIIA in excitotoxicity both as target and producer of superoxide in a positive-loop of activation that may contribute to the propagation of neurodegeneration.</description><subject>Ageing, cell death</subject><subject>Animals</subject><subject>Annexin A5 - metabolism</subject><subject>Apoptosis</subject><subject>Apoptosis - drug effects</subject><subject>Apoptosis - physiology</subject><subject>Biological and medical sciences</subject><subject>Calcium - metabolism</subject><subject>Cell physiology</subject><subject>Cells, Cultured</subject><subject>Central nervous system</subject><subject>Central neurotransmission. Neuromudulation. Pathways and receptors</subject><subject>Cerebral Cortex - cytology</subject><subject>Dose-Response Relationship, Drug</subject><subject>Embryo, Mammalian</subject><subject>Enzyme Inhibitors - pharmacology</subject><subject>Excitatory Amino Acid Antagonists - pharmacology</subject><subject>excitotoxicity</subject><subject>Female</subject><subject>Flow Cytometry - methods</subject><subject>Fundamental and applied biological sciences. 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Neuromudulation. Pathways and receptors</topic><topic>Cerebral Cortex - cytology</topic><topic>Dose-Response Relationship, Drug</topic><topic>Embryo, Mammalian</topic><topic>Enzyme Inhibitors - pharmacology</topic><topic>Excitatory Amino Acid Antagonists - pharmacology</topic><topic>excitotoxicity</topic><topic>Female</topic><topic>Flow Cytometry - methods</topic><topic>Fundamental and applied biological sciences. Psychology</topic><topic>glutamate</topic><topic>Glutamic Acid - pharmacology</topic><topic>Group II Phospholipases A2 - metabolism</topic><topic>Group II Phospholipases A2 - pharmacology</topic><topic>Mitochondria - drug effects</topic><topic>Mitochondria - metabolism</topic><topic>Molecular and cellular biology</topic><topic>Molsidomine - analogs &amp; derivatives</topic><topic>Molsidomine - pharmacology</topic><topic>Neurodegeneration</topic><topic>Neurology</topic><topic>Neurons</topic><topic>Neurons - drug effects</topic><topic>Neurons - physiology</topic><topic>Neurotoxicity</topic><topic>Nitric Oxide Donors - pharmacology</topic><topic>Nitroso Compounds - pharmacology</topic><topic>Pregnancy</topic><topic>primary cortical neurons</topic><topic>Rats</topic><topic>Rats, Wistar</topic><topic>Reactive Oxygen Species - metabolism</topic><topic>Receptors, N-Methyl-D-Aspartate - metabolism</topic><topic>Rodents</topic><topic>secretory phospholipase A</topic><topic>secretory phospholipase A2</topic><topic>Vertebrates: nervous system and sense organs</topic><topic>Xanthine - pharmacology</topic><topic>Xanthine Oxidase - pharmacology</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Chiricozzi, Elena</creatorcontrib><creatorcontrib>Fernandez-Fernandez, Seila</creatorcontrib><creatorcontrib>Nardicchi, Vincenza</creatorcontrib><creatorcontrib>Almeida, Angeles</creatorcontrib><creatorcontrib>Bolaños, Juan Pedro</creatorcontrib><creatorcontrib>Goracci, Gianfrancesco</creatorcontrib><collection>AGRIS</collection><collection>Pascal-Francis</collection><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>Chemoreception Abstracts</collection><collection>Neurosciences Abstracts</collection><collection>Toxicology Abstracts</collection><collection>Virology and AIDS Abstracts</collection><collection>Technology Research Database</collection><collection>Environmental Sciences and Pollution Management</collection><collection>Engineering Research Database</collection><collection>AIDS and Cancer Research Abstracts</collection><collection>Biotechnology and BioEngineering Abstracts</collection><collection>Calcium &amp; Calcified Tissue Abstracts</collection><jtitle>Journal of neurochemistry</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Chiricozzi, Elena</au><au>Fernandez-Fernandez, Seila</au><au>Nardicchi, Vincenza</au><au>Almeida, Angeles</au><au>Bolaños, Juan Pedro</au><au>Goracci, Gianfrancesco</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Group IIA secretory phospholipase A₂ (GIIA) mediates apoptotic death during NMDA receptor activation in rat primary cortical neurons</atitle><jtitle>Journal of neurochemistry</jtitle><addtitle>J Neurochem</addtitle><date>2010-03</date><risdate>2010</risdate><volume>112</volume><issue>6</issue><spage>1574</spage><epage>1583</epage><pages>1574-1583</pages><issn>0022-3042</issn><eissn>1471-4159</eissn><coden>JONRA9</coden><abstract>J. Neurochem. (2010) 112, 1574-1583. Phospholipases A₂ (PLA₂) participate in neuronal death signalling pathways because of their ability to release lipid mediators, although the contribution of each isoform and mechanism of neurotoxicity are still elusive. Using a novel fluorogenic method to assess changes in a PLA₂ activity by flow cytometry, here we show that the group IIA secretory phospholipase A₂ isoform (GIIA) was specifically activated in cortical neurons following stimulation of N-methyl- d-aspartate glutamate receptor subtype (NMDAR). For activation, GIIA required Ca²⁺ and reactive oxygen/nitrogen species, and inhibition of its activity fully prevented NMDAR-mediated neuronal apoptotic death. Superoxide, nitric oxide or peroxynitrite donors stimulated GIIA activity, which mediated neuronal death. Intriguingly, we also found that GIIA activity induced mitochondrial superoxide production after NMDAR stimulation. These results reveal a novel role for GIIA in excitotoxicity both as target and producer of superoxide in a positive-loop of activation that may contribute to the propagation of neurodegeneration.</abstract><cop>Oxford, UK</cop><pub>Oxford, UK : Blackwell Publishing Ltd</pub><pmid>20067579</pmid><doi>10.1111/j.1471-4159.2010.06567.x</doi><tpages>10</tpages></addata></record>
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source Wiley-Blackwell Journals; IngentaConnect Backfiles; MEDLINE; Full-Text Journals in Chemistry (Open access); Wiley Free Archive; EZB Electronic Journals Library
subjects Ageing, cell death
Animals
Annexin A5 - metabolism
Apoptosis
Apoptosis - drug effects
Apoptosis - physiology
Biological and medical sciences
Calcium - metabolism
Cell physiology
Cells, Cultured
Central nervous system
Central neurotransmission. Neuromudulation. Pathways and receptors
Cerebral Cortex - cytology
Dose-Response Relationship, Drug
Embryo, Mammalian
Enzyme Inhibitors - pharmacology
Excitatory Amino Acid Antagonists - pharmacology
excitotoxicity
Female
Flow Cytometry - methods
Fundamental and applied biological sciences. Psychology
glutamate
Glutamic Acid - pharmacology
Group II Phospholipases A2 - metabolism
Group II Phospholipases A2 - pharmacology
Mitochondria - drug effects
Mitochondria - metabolism
Molecular and cellular biology
Molsidomine - analogs & derivatives
Molsidomine - pharmacology
Neurodegeneration
Neurology
Neurons
Neurons - drug effects
Neurons - physiology
Neurotoxicity
Nitric Oxide Donors - pharmacology
Nitroso Compounds - pharmacology
Pregnancy
primary cortical neurons
Rats
Rats, Wistar
Reactive Oxygen Species - metabolism
Receptors, N-Methyl-D-Aspartate - metabolism
Rodents
secretory phospholipase A
secretory phospholipase A2
Vertebrates: nervous system and sense organs
Xanthine - pharmacology
Xanthine Oxidase - pharmacology
title Group IIA secretory phospholipase A₂ (GIIA) mediates apoptotic death during NMDA receptor activation in rat primary cortical neurons
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