1
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Coras R, Pedersen B, Narasimhan R, Brandy A, Mateo L, Prior-Español A, Kavanaugh A, Armando AM, Jain M, Quehenberger O, Martínez-Morillo M, Guma M. Imbalance Between Omega-6- and Omega-3-Derived Bioactive Lipids in Arthritis in Older Adults. J Gerontol A Biol Sci Med Sci 2021; 76:415-425. [PMID: 32361743 DOI: 10.1093/gerona/glaa113] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2019] [Indexed: 12/13/2022] Open
Abstract
Elderly-onset rheumatoid arthritis (EORA) and polymyalgia rheumatica (PMR) are common rheumatic diseases in older adults. Oxylipins are bioactive lipids derived from omega-6 (n-6) and omega-3 (n-3) polyunsaturated fatty acids (PUFAs) that serve as activators or suppressors of systemic inflammation. We hypothesized that arthritis symptoms in older adults were related to oxylipin-related perturbations. Arthritis in older adults (ARTIEL) is an observational prospective cohort with 64 patients older than 60 years of age with newly diagnosed arthritis. Patients' blood samples at baseline and 3 months posttreatment were compared with 18 controls. A thorough clinical examination was conducted. Serum oxylipins were determined by mass spectrometry. Data processing and statistical analysis were performed in R. Forty-four patients were diagnosed with EORA and 20 with PMR. At diagnosis, EORA patients had a mean DAS28CRP (Disease Activity Score 28 using C-reactive protein) of 5.77 (SD 1.02). One hundred percent of PMR patients reported shoulder pain and 90% reported pelvic pain. Several n-6- and n-3-derived oxylipin species were significantly different between controls and arthritis patients. The ratio of n-3/n-6 PUFA was significantly downregulated in EORA but not in PMR patients as compared to controls. The top two candidates as biomarkers for differentiating PMR from EORA were 4-HDoHE, a hydroxydocosahexaenoic acid, and 8,15-dihydroxy-eicosatrienoic acid (8,15-diHETE). The levels of n-3-derived anti-inflammatory species increased in EORA after treatment. These results suggest that certain oxylipins may be key effectors in arthrtis in older adults and that the imbalance between n-6- and n-3-derived oxylipins might be related to pathobiology in this population.
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Affiliation(s)
- Roxana Coras
- Department of Medicine, School of Medicine, University of California, San Diego.,Department of Medicine, Autonomous University of Barcelona, Bellaterra, Spain
| | - Brian Pedersen
- Department of Medicine, School of Medicine, University of California, San Diego
| | - Rekha Narasimhan
- Department of Medicine, School of Medicine, University of California, San Diego
| | - Anahy Brandy
- Department of Rheumatology, Germans Trias i Pujol University Hospital, Badalona, Spain
| | - Lourdes Mateo
- Department of Rheumatology, Germans Trias i Pujol University Hospital, Badalona, Spain
| | - Agueda Prior-Español
- Department of Rheumatology, Germans Trias i Pujol University Hospital, Badalona, Spain
| | - Arthur Kavanaugh
- Department of Medicine, School of Medicine, University of California, San Diego
| | - Aaron M Armando
- Department of Pharmacology, School of Medicine, University of California, San Diego
| | - Mohit Jain
- Department of Medicine, School of Medicine, University of California, San Diego.,Department of Pharmacology, School of Medicine, University of California, San Diego
| | - Oswald Quehenberger
- Department of Pharmacology, School of Medicine, University of California, San Diego
| | | | - Monica Guma
- Department of Medicine, School of Medicine, University of California, San Diego.,Department of Medicine, Autonomous University of Barcelona, Bellaterra, Spain
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2
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Hoxha M. A systematic review on the role of eicosanoid pathways in rheumatoid arthritis. Adv Med Sci 2018; 63:22-29. [PMID: 28818745 DOI: 10.1016/j.advms.2017.06.004] [Citation(s) in RCA: 54] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2017] [Revised: 06/05/2017] [Accepted: 06/18/2017] [Indexed: 11/29/2022]
Abstract
BACKGROUND Rheumatoid arthritis is characterized by the production of eicosanoids, cytokines, adhesion molecules, infiltration of T and B lymphocytes in the synovium and oxygen reduction accompanied by the cartilage degradation. Eicosanoids are responsible for the progressive destruction of cartilage and bone, however neither steroids, nor the non steroidal anti-inflammatory drugs (NSAIDs), cannot slow down cartilage and bone destruction providing only symptomatic improvement. The current rheumatoid arthritis treatment options include mainly the use of disease-modifying anti-rheumatic drugs, the corticosteroids, the NSAIDs and biological agents. METHODS PubMed, Cochrane, and Embase electronic database were used as the main sources for extracting several articles, reviews, original papers in English for further review and analysis on the implication of arachidonic acid metabolites with rheumatoid arthritis and different strategies of targeting arachidonic acid metabolites, different enzymes or receptors for improving the treatment of rheumatoid arthritis patients. RESULTS We first focused on the role of individual prostaglandins and leukotrienes, in the inflammatory process of arthritis, concluding with an outline of the current clinical situation of rheumatoid arthritis and novel treatment strategies targeting the arachidonic acid pathway. CONCLUSIONS Extended research is necessary for the development of these novel compounds targeting the eicosanoid pathway, by increasing the levels of anti-inflammatory eicosanoids (PGD2,15dPGJ2), by inhibiting the production of pro-inflammatory eicosanoids (PGE2, LTB4, PGI2) involved in rheumatoid arthritis or also by developing dual compounds displaying both the COX-2 inhibitor/TP antagonist activity within a single compound.
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Affiliation(s)
- Malvina Hoxha
- Department of Chemical-Toxicological and Pharmacological Evaluation of Drugs, Catholic University Our Lady of Good Counsel, Tirana, Albania; Department of Pharmacological and Biomolecular Sciences, Università degli studi di Milano, Milan, Italy.
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3
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Vázquez-Medina JP, Dodia C, Weng L, Mesaros C, Blair IA, Feinstein SI, Chatterjee S, Fisher AB. The phospholipase A2 activity of peroxiredoxin 6 modulates NADPH oxidase 2 activation via lysophosphatidic acid receptor signaling in the pulmonary endothelium and alveolar macrophages. FASEB J 2016; 30:2885-98. [PMID: 27178323 DOI: 10.1096/fj.201500146r] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2015] [Accepted: 04/26/2016] [Indexed: 01/04/2023]
Abstract
Peroxiredoxin 6 (Prdx6) is essential for activation of NADPH oxidase type 2 (NOX2) in pulmonary microvascular endothelial cells (PMVECs), alveolar macrophages (AMs), and polymorphonuclear leukocytes. Angiotensin II and phorbol ester increased superoxide/H2O2 generation in PMVECs, AMs, and isolated lungs from wild-type (WT) mice, but had much less effect on cells or lungs from Prdx6-null or Prdx6-D140A-knock-in mice that lack the phospholipase A2 activity (PLA2) of Prdx6; addition of either lysophosphatidylcholine (LPC) or lysophosphatidic acid (LPA) to cells restored their oxidant generation. The generation of LPC by PMVECs required Prdx6-PLA2 We propose that Prdx6-PLA2 modulates NOX2 activation by generation of LPC that is converted to LPA by the lysophospholipase D activity of autotaxin (ATX/lysoPLD). Inhibition of lysoPLD with HA130 (cells,10 μM; lungs, 20 μM; IC50, 29 nM) decreased agonist-induced oxidant generation. LPA stimulates pathways regulated by small GTPases through binding to G-protein-coupled LPA receptors (LPARs). The LPAR blocker Ki16425 (cells, 10 μM; lungs, 25 μM; Ki, 0.34 μM) or cellular knockdown of LPAR type 1 decreased oxidant generation and blocked translocation of rac1 to plasma membrane. Thus, Prdx6-PLA2 modulates NOX2 activation through generation of LPC for conversion to LPA; binding of LPA to LPAR1 signals rac activation.-Vázquez-Medina, J. P., Dodia, C., Weng, L., Mesaros, C., Blair, I. A., Feinstein, S. I., Chatterjee, S., Fisher, A. B. The phospholipase A2 activity of peroxiredoxin 6 modulates NADPH oxidase 2 activation via lysophosphatidic acid receptor signaling in the pulmonary endothelium and alveolar macrophages.
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Affiliation(s)
- José Pablo Vázquez-Medina
- Institute for Environmental Medicine, Department of Physiology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA; and
| | - Chandra Dodia
- Institute for Environmental Medicine, Department of Physiology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA; and
| | - Liwei Weng
- Center for Cancer Pharmacology, Department of Pharmacology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA Center for Excellence in Environmental Toxicology, Department of Pharmacology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Clementina Mesaros
- Center for Cancer Pharmacology, Department of Pharmacology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA Center for Excellence in Environmental Toxicology, Department of Pharmacology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Ian A Blair
- Center for Cancer Pharmacology, Department of Pharmacology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA Center for Excellence in Environmental Toxicology, Department of Pharmacology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Sheldon I Feinstein
- Institute for Environmental Medicine, Department of Physiology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA; and
| | - Shampa Chatterjee
- Institute for Environmental Medicine, Department of Physiology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA; and
| | - Aron B Fisher
- Institute for Environmental Medicine, Department of Physiology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA; and
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4
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Ellison MA, Thurman GW, Ambruso DR. Phox activity of differentiated PLB-985 cells is enhanced, in an agonist specific manner, by the PLA2 activity of Prdx6-PLA2. Eur J Immunol 2012; 42:1609-17. [PMID: 22678913 DOI: 10.1002/eji.201142157] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Peroxiredoxin 6-phospholipase A(2) (Prdx6-PLA(2) ) is a bi-functional enzyme with peroxi-redoxin (Prdx) and phospholipase A(2) (PLA(2) ) activities. To investigate its impact on phagocyte NADPH oxidase (phox) activity in a neutrophil model, the protein was knocked down in PLB-985 cells using stable expression of a small hairpin RNA (shRNA) and phox activity was monitored after cell differentiation. The knockdown cells had reduced oxidase activity in response to stimulation with the formylated peptide fMLF, but the response to the phorbol ester PMA was unchanged. Reintroduction of shRNA-resistant Prdx6-PLA(2) into the knockdown cells by stable transfection with a Prdx6-PLA(2) expression plasmid restored the fMLF response, as did reintroduction of Prdx6-PLA(2) mutated in the Prdx active site; reintroduction of PLA(2) active site mutants, however, failed to restore the response. Thus, the PLA(2) activity of Prdx6-PLA(2) in intact cells mediates its ability to enhance phox activity in response to fMLF. In combination with previous publications by other groups, our work indicates that various PLA(2) isoforms can enhance oxidase activity but they are differentially important in different cell types and in the response to different agonists.
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5
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Browning EA, Chatterjee S, Fisher AB. Stop the flow: a paradigm for cell signaling mediated by reactive oxygen species in the pulmonary endothelium. Annu Rev Physiol 2011; 74:403-24. [PMID: 22077215 DOI: 10.1146/annurev-physiol-020911-153324] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
The lung endothelium is exposed to mechanical stimuli through shear stress arising from blood flow and responds to altered shear by activation of NADPH (NOX2) to generate reactive oxygen species (ROS). This review describes the pathway for NOX2 activation and the downstream ROS-mediated signaling events on the basis of studies of isolated lungs and flow-adapted endothelial cells in vitro that are subjected to acute flow cessation (ischemia). Altered mechanical stress is detected by a cell-associated complex involving caveolae and other membrane proteins that results in endothelial cell membrane depolarization and then the activation of specific kinases that lead to the assembly of NOX2 components. ROS generated by this enzyme amplify the mechanosignal within the endothelial cell to regulate activation and/or synthesis of proteins that participate in cell growth, proliferation, differentiation, apoptosis, and vascular remodeling. These responses indicate an important role for NOX2-derived ROS associated with mechanotransduction in promoting vascular homeostasis.
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Affiliation(s)
- Elizabeth A Browning
- Institute for Environmental Medicine, University of Pennsylvania School of Medicine, Philadelphia, Pennsylvania 19104, USA.
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6
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Chatterjee S, Feinstein SI, Dodia C, Sorokina E, Lien YC, Nguyen S, Debolt K, Speicher D, Fisher AB. Peroxiredoxin 6 phosphorylation and subsequent phospholipase A2 activity are required for agonist-mediated activation of NADPH oxidase in mouse pulmonary microvascular endothelium and alveolar macrophages. J Biol Chem 2011; 286:11696-706. [PMID: 21262967 PMCID: PMC3064221 DOI: 10.1074/jbc.m110.206623] [Citation(s) in RCA: 109] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2010] [Revised: 01/14/2011] [Indexed: 11/06/2022] Open
Abstract
Peroxiredoxin 6 (Prdx6), a bifunctional enzyme with glutathione peroxidase and phospholipase A2 (PLA(2)) activities, participates in the activation of NADPH oxidase 2 (NOX2) in neutrophils, but the mechanism for this effect is not known. We now demonstrate that Prdx6 is required for agonist-induced NOX2 activation in pulmonary microvascular endothelial cells (PMVEC) and that the effect requires the PLA(2) activity of Prdx6. Generation of reactive oxygen species (ROS) in response to angiotensin II (Ang II) or phorbol 12-myristate 13-acetate was markedly reduced in perfused lungs and isolated PMVEC from Prdx6 null mice. Rac1 and p47(phox), cytosolic components of NOX2, translocated to the endothelial cell membrane after Ang II treatment in wild-type but not Prdx6 null PMVEC. MJ33, an inhibitor of Prdx6 PLA(2) activity, blocked agonist-induced PLA(2) activity and ROS generation in PMVEC by >80%, whereas inhibitors of other PLA(2)s were ineffective. Transfection of Prx6 null cells with wild-type and C47S mutant Prdx6, but not with mutants of the PLA(2) active site (S32A, H26A, and D140A), "rescued" Ang II-induced PLA(2) activity and ROS generation. Ang II treatment of wild-type cells resulted in phosphorylation of Prdx6 and its subsequent translocation from the cytosol to the cell membrane. Phosphorylation as well as PLA(2) activity and ROS generation were markedly reduced by the MAPK inhibitor, U0126. Thus, agonist-induced MAPK activation leads to Prdx6 phosphorylation and translocation to the cell membrane, where its PLA(2) activity facilitates assembly of the NOX2 complex and activation of the oxidase.
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Affiliation(s)
- Shampa Chatterjee
- From the Institute for Environmental Medicine, University of Pennsylvania Medical Center, Philadelphia, Pennsylvania 19104-6068 and
| | - Sheldon I. Feinstein
- From the Institute for Environmental Medicine, University of Pennsylvania Medical Center, Philadelphia, Pennsylvania 19104-6068 and
| | - Chandra Dodia
- From the Institute for Environmental Medicine, University of Pennsylvania Medical Center, Philadelphia, Pennsylvania 19104-6068 and
| | - Elena Sorokina
- From the Institute for Environmental Medicine, University of Pennsylvania Medical Center, Philadelphia, Pennsylvania 19104-6068 and
| | - Yu-Chin Lien
- From the Institute for Environmental Medicine, University of Pennsylvania Medical Center, Philadelphia, Pennsylvania 19104-6068 and
| | - Su Nguyen
- From the Institute for Environmental Medicine, University of Pennsylvania Medical Center, Philadelphia, Pennsylvania 19104-6068 and
| | - Kris Debolt
- From the Institute for Environmental Medicine, University of Pennsylvania Medical Center, Philadelphia, Pennsylvania 19104-6068 and
| | - David Speicher
- the Center for Systems and Computational Biology, The Wistar Institute, Philadelphia, Pennsylvania 19104
| | - Aron B. Fisher
- From the Institute for Environmental Medicine, University of Pennsylvania Medical Center, Philadelphia, Pennsylvania 19104-6068 and
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7
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Chen KC, Liu WH, Chang LS. Suppression of ERK signaling evokes autocrine Fas-mediated death in arachidonic acid-treated human chronic myeloid leukemia K562 cells. J Cell Physiol 2010; 222:625-34. [PMID: 19927299 DOI: 10.1002/jcp.21979] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Arachidonic acid (AA)-induced apoptotic death of K562 cells (human chronic myeloid leukemic cells) was characteristic of reactive oxygen species (ROS) generation and mitochondrial depolarization. N-Acetylcysteine pretreatment rescued viability of AA-treated cells and abolished mitochondrial depolarization. In contrast to no significant changes in phospho-JNK and phospho-ERK levels, AA evoked notable activation of p38 MAPK. Unlike that of JNK and p38 MAPK, ERK suppression further reduced the viability of AA-treated cells. Increases in Fas/FasL protein expression, caspase-8 activation, the production of tBid and the loss of mitochondrial membrane potential were noted with K562 cells that were treated with a combination of U0126 and AA. Down-regulation of FADD attenuated U0126-evoked degradation of procaspase-8 and Bid. Abolition of p38 MAPK activation abrogated U0126-elicited Fas/FasL up-regulation in AA-treated cells. U0126 pretreatment suppressed c-Fos phosphorylation but increased p38 MAPK-mediated c-Jun phosphorylation. Knock-down of c-Fos and c-Jun protein expression by siRNA suggested that c-Fos counteracted the effect of c-Jun on Fas/FasL up-regulation. Taken together, our data indicate that AA induces the ROS/mitochondria-dependent death pathway and blocks the ERK pathway which enhances the cytotoxicity of AA through additionally evoking an autocrine Fas-mediated apoptotic mechanism in K562 cells.
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Affiliation(s)
- Ku-Chung Chen
- Institute of Biomedical Sciences, Kaohsiung Medical University Joint Research Center, National Sun Yat-Sen University, Kaohsiung 804, Taiwan
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8
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Vladimirov YA, Proskurnina EV. Free radicals and cell chemiluminescence. BIOCHEMISTRY (MOSCOW) 2010; 74:1545-66. [DOI: 10.1134/s0006297909130082] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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9
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Liu WH, Chang LS. Arachidonic acid induces Fas and FasL upregulation in human leukemia U937 cells via Ca2+/ROS-mediated suppression of ERK/c-Fos pathway and activation of p38 MAPK/ATF-2 pathway. Toxicol Lett 2009; 191:140-8. [DOI: 10.1016/j.toxlet.2009.08.016] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2009] [Revised: 08/19/2009] [Accepted: 08/22/2009] [Indexed: 12/19/2022]
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10
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Chen KC, Chang LS. Arachidonic acid-induced apoptosis of human neuroblastoma SK-N-SH cells is mediated through mitochondrial alteration elicited by ROS and Ca2+-evoked activation of p38α MAPK and JNK1. Toxicology 2009; 262:199-206. [DOI: 10.1016/j.tox.2009.06.009] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2009] [Revised: 06/10/2009] [Accepted: 06/11/2009] [Indexed: 12/31/2022]
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11
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Fuchs B, Bondzio A, Wagner U, Schiller J. Phospholipid compositions of sera and synovial fluids from dog, human and horse: a comparison by31P-NMR and MALDI-TOF MS. J Anim Physiol Anim Nutr (Berl) 2009; 93:410-22. [DOI: 10.1111/j.1439-0396.2008.00822.x] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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12
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Liu WH, Cheng YC, Chang LS. ROS-mediated p38alpha MAPK activation and ERK inactivation responsible for upregulation of Fas and FasL and autocrine Fas-mediated cell death in Taiwan cobra phospholipase A(2)-treated U937 cells. J Cell Physiol 2009; 219:642-51. [PMID: 19180563 DOI: 10.1002/jcp.21713] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
The aim of the present study is to explore the signaling pathway associated with Naja naja atra phospholipase A(2) (PLA(2))-induced apoptotic death of human leukemia U937 cells. Degradation of procaspases, production of tBid, loss of mitochondrial membrane potential, and cytochrome c release were observed in PLA(2)-treated cells. PLA(2) treatment increased Fas and FasL protein expression, and upregulated transcription of Fas and FasL mRNA. Upon exposure to PLA(2), ROS generation, p38 MAPK activation, and ERK inactivation were found in U937 cells. Abolition of PLA(2)-induced ROS generation abrogated p38 MAPK activation and upregulation of Fas and FasL expression, but restored ERK activation and viability of PLA(2)-treated cells. Block of p38 MAPK by SB202190 abolished PLA(2)-induced Fas/FasL upregulation and ERK inactivation, but not ROS generation. Activated ERK suppressed p38 MAPK activation and Fas/FasL protein expression. Selective inactivation or overexpression of p38alpha MAPK proved that upregulation of Fas/FasL and ERK inactivation were related to p38alpha MAPK activation. Deprivation of catalytic activity with PLA(2) blocked completely PLA(2)-induced Fas/FasL upregulation. Downregulation of FADD abolished PLA(2)-induced procaspase-8 degradation and rescued viability of PLA(2)-treated cells. Taken together, our results indicate that Fas/FasL upregulation in PLA(2)-treated U937 cells is elicited by ROS-mediated p38alpha MAPK activation and ERK inactivation, and suggest that autocrine Fas/FasL apoptotic mechanism is involved in PLA(2)-induced cell death. J. Cell. Physiol. 219: 642-651, 2009. (c) 2009 Wiley-Liss, Inc.
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Affiliation(s)
- Wen-Hsin Liu
- Institute of Biomedical Sciences, National Sun Yat-Sen University-Kaohsiung Medical University Joint Research Center, National Sun Yat-Sen University, Kaohsiung, Taiwan
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13
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Fujioka D, Saito Y, Kobayashi T, Yano T, Tezuka H, Ishimoto Y, Suzuki N, Yokota Y, Nakamura T, Obata JE, Kanazawa M, Kawabata KI, Hanasaki K, Kugiyama K. Reduction in Myocardial Ischemia/Reperfusion Injury in Group X Secretory Phospholipase A
2
–Deficient Mice. Circulation 2008; 117:2977-85. [DOI: 10.1161/circulationaha.107.743997] [Citation(s) in RCA: 62] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Background—
Group X secretory phospholipase A
2
(sPLA
2
-X) has the most potent hydrolyzing activity toward phosphatidylcholine and elicits a marked release of arachidonic acid among several types of sPLA
2
. sPLA
2
-X is expressed in neutrophils, but its pathogenic role remains unclear.
Methods and Results—
We generated mice that lack sPLA
2
-X and studied their response to myocardial ischemia/reperfusion. The sPLA
2
-X
−/−
mice had a significant reduction in myocardial infarct size and a decrease in myocardial myeloperoxidase activity compared with sPLA
2
-X
+/+
mice. Myocardial infarct size was also significantly reduced in lethally irradiated sPLA
2
-X
+/+
mice reconstituted with sPLA
2
-X
−/−
bone marrow compared with sPLA
2
-X
+/+
bone marrow. The extent of myocardial ischemia/reperfusion injury was comparable between sPLA
2
-X
−/−
and sPLA
2
-X
+/+
mice in Langendorff experiments using isolated hearts and blood-free perfusion buffer, supporting a potential role of sPLA
2
-X in blood in myocardial ischemia/reperfusion injury. In the infarcted myocardium of sPLA
2
-X
+/+
mice, sPLA
2
-X was released from neutrophils but not myocardial tissues and platelets and was undetectable in the peripheral serum. The sPLA
2
-X
−/−
mice had lower accumulation of neutrophils in ischemic myocardium, and the isolated sPLA
2
-X
−/−
neutrophils had lower release of arachidonic acid and attenuated cytotoxic activities including respiratory burst compared with sPLA
2
-X
+/+
neutrophils. The attenuated functions of sPLA
2
-X
−/−
neutrophils were reversible by the exogenous addition of sPLA
2
-X protein. Furthermore, administration of a sPLA
2
inhibitor reduced myocardial infarct size and suppressed the cytotoxic activity of sPLA
2
-X
+/+
neutrophils.
Conclusions—
Myocardial ischemia/reperfusion injury was attenuated in sPLA
2
-X
−/−
mice partly through the suppression of neutrophil cytotoxic activities.
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Affiliation(s)
- Daisuke Fujioka
- From the Department of Internal Medicine II (D.F., Y.S., T.K., T.Y., T.N., J.O., M.K., K. Kawabata, K. Kugiyama) and Laboratory Animal Support Section (H.T.), Center for Life Science Research, Interdisciplinary Graduate School of Medicine and Engineering, University of Yamanashi, Yamanashi; and Shionogi Research Laboratories, Shionogi and Co Ltd, Osaka (Y.I., N.S., Y.Y., K.H.), Japan
| | - Yukio Saito
- From the Department of Internal Medicine II (D.F., Y.S., T.K., T.Y., T.N., J.O., M.K., K. Kawabata, K. Kugiyama) and Laboratory Animal Support Section (H.T.), Center for Life Science Research, Interdisciplinary Graduate School of Medicine and Engineering, University of Yamanashi, Yamanashi; and Shionogi Research Laboratories, Shionogi and Co Ltd, Osaka (Y.I., N.S., Y.Y., K.H.), Japan
| | - Tsuyoshi Kobayashi
- From the Department of Internal Medicine II (D.F., Y.S., T.K., T.Y., T.N., J.O., M.K., K. Kawabata, K. Kugiyama) and Laboratory Animal Support Section (H.T.), Center for Life Science Research, Interdisciplinary Graduate School of Medicine and Engineering, University of Yamanashi, Yamanashi; and Shionogi Research Laboratories, Shionogi and Co Ltd, Osaka (Y.I., N.S., Y.Y., K.H.), Japan
| | - Toshiaki Yano
- From the Department of Internal Medicine II (D.F., Y.S., T.K., T.Y., T.N., J.O., M.K., K. Kawabata, K. Kugiyama) and Laboratory Animal Support Section (H.T.), Center for Life Science Research, Interdisciplinary Graduate School of Medicine and Engineering, University of Yamanashi, Yamanashi; and Shionogi Research Laboratories, Shionogi and Co Ltd, Osaka (Y.I., N.S., Y.Y., K.H.), Japan
| | - Hideo Tezuka
- From the Department of Internal Medicine II (D.F., Y.S., T.K., T.Y., T.N., J.O., M.K., K. Kawabata, K. Kugiyama) and Laboratory Animal Support Section (H.T.), Center for Life Science Research, Interdisciplinary Graduate School of Medicine and Engineering, University of Yamanashi, Yamanashi; and Shionogi Research Laboratories, Shionogi and Co Ltd, Osaka (Y.I., N.S., Y.Y., K.H.), Japan
| | - Yoshikazu Ishimoto
- From the Department of Internal Medicine II (D.F., Y.S., T.K., T.Y., T.N., J.O., M.K., K. Kawabata, K. Kugiyama) and Laboratory Animal Support Section (H.T.), Center for Life Science Research, Interdisciplinary Graduate School of Medicine and Engineering, University of Yamanashi, Yamanashi; and Shionogi Research Laboratories, Shionogi and Co Ltd, Osaka (Y.I., N.S., Y.Y., K.H.), Japan
| | - Noriko Suzuki
- From the Department of Internal Medicine II (D.F., Y.S., T.K., T.Y., T.N., J.O., M.K., K. Kawabata, K. Kugiyama) and Laboratory Animal Support Section (H.T.), Center for Life Science Research, Interdisciplinary Graduate School of Medicine and Engineering, University of Yamanashi, Yamanashi; and Shionogi Research Laboratories, Shionogi and Co Ltd, Osaka (Y.I., N.S., Y.Y., K.H.), Japan
| | - Yasunori Yokota
- From the Department of Internal Medicine II (D.F., Y.S., T.K., T.Y., T.N., J.O., M.K., K. Kawabata, K. Kugiyama) and Laboratory Animal Support Section (H.T.), Center for Life Science Research, Interdisciplinary Graduate School of Medicine and Engineering, University of Yamanashi, Yamanashi; and Shionogi Research Laboratories, Shionogi and Co Ltd, Osaka (Y.I., N.S., Y.Y., K.H.), Japan
| | - Takamitsu Nakamura
- From the Department of Internal Medicine II (D.F., Y.S., T.K., T.Y., T.N., J.O., M.K., K. Kawabata, K. Kugiyama) and Laboratory Animal Support Section (H.T.), Center for Life Science Research, Interdisciplinary Graduate School of Medicine and Engineering, University of Yamanashi, Yamanashi; and Shionogi Research Laboratories, Shionogi and Co Ltd, Osaka (Y.I., N.S., Y.Y., K.H.), Japan
| | - Jyun-ei Obata
- From the Department of Internal Medicine II (D.F., Y.S., T.K., T.Y., T.N., J.O., M.K., K. Kawabata, K. Kugiyama) and Laboratory Animal Support Section (H.T.), Center for Life Science Research, Interdisciplinary Graduate School of Medicine and Engineering, University of Yamanashi, Yamanashi; and Shionogi Research Laboratories, Shionogi and Co Ltd, Osaka (Y.I., N.S., Y.Y., K.H.), Japan
| | - Masaki Kanazawa
- From the Department of Internal Medicine II (D.F., Y.S., T.K., T.Y., T.N., J.O., M.K., K. Kawabata, K. Kugiyama) and Laboratory Animal Support Section (H.T.), Center for Life Science Research, Interdisciplinary Graduate School of Medicine and Engineering, University of Yamanashi, Yamanashi; and Shionogi Research Laboratories, Shionogi and Co Ltd, Osaka (Y.I., N.S., Y.Y., K.H.), Japan
| | - Ken-ichi Kawabata
- From the Department of Internal Medicine II (D.F., Y.S., T.K., T.Y., T.N., J.O., M.K., K. Kawabata, K. Kugiyama) and Laboratory Animal Support Section (H.T.), Center for Life Science Research, Interdisciplinary Graduate School of Medicine and Engineering, University of Yamanashi, Yamanashi; and Shionogi Research Laboratories, Shionogi and Co Ltd, Osaka (Y.I., N.S., Y.Y., K.H.), Japan
| | - Kohji Hanasaki
- From the Department of Internal Medicine II (D.F., Y.S., T.K., T.Y., T.N., J.O., M.K., K. Kawabata, K. Kugiyama) and Laboratory Animal Support Section (H.T.), Center for Life Science Research, Interdisciplinary Graduate School of Medicine and Engineering, University of Yamanashi, Yamanashi; and Shionogi Research Laboratories, Shionogi and Co Ltd, Osaka (Y.I., N.S., Y.Y., K.H.), Japan
| | - Kiyotaka Kugiyama
- From the Department of Internal Medicine II (D.F., Y.S., T.K., T.Y., T.N., J.O., M.K., K. Kawabata, K. Kugiyama) and Laboratory Animal Support Section (H.T.), Center for Life Science Research, Interdisciplinary Graduate School of Medicine and Engineering, University of Yamanashi, Yamanashi; and Shionogi Research Laboratories, Shionogi and Co Ltd, Osaka (Y.I., N.S., Y.Y., K.H.), Japan
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14
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Jancinová V, Drábiková K, Nosál R, Racková L, Májeková M, Holománová D. The combined luminol/isoluminol chemiluminescence method for differentiating between extracellular and intracellular oxidant production by neutrophils. Redox Rep 2006; 11:110-6. [PMID: 16805965 DOI: 10.1179/135100006x116592] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022] Open
Abstract
To address the question why isoluminol, but not luminol, failed to detect oxidants produced intracellularly, differences between these luminophores were investigated with respect to physicochemical parameters and the character of chemiluminescence signal. Our results showed the isoluminol molecule to be more polar, more hydrophilic and possessing lower ability to form intramolecular bonds than the luminol molecule. Therefore, isoluminol: (i) only slightly pervaded biological membranes; (ii) depended essentially on extracellular peroxidase; (iii) did not produce chemiluminescence in the presence of extracellular scavengers; and (iv) it could be considered a specific detector of extracellular radicals. On the other hand, the physicochemical parameters of luminol and partial resistance of its chemiluminescence to the effect of extracellular inhibitors proved the lipo/hydrophilic character of this luminophore and thus its ability to interact with radicals both outside and inside of cells. The luminol chemiluminescence measured in the presence of extracellular scavengers and the isoluminol chemiluminescence were used with the intention to differentiate the effects of two antihistamine drugs on intra- and extracellular radical formation. In activated human neutrophils, brompheniramine inhibited the extracellular and potentiated the intracellular part of chemiluminescence signal, whereas a reducing effect of loratadine was observed in both compartments.
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Affiliation(s)
- Viera Jancinová
- Institute of Experimental Pharmacology, Slovak Academy of Sciences, Bratislava, Slovak Republic.
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15
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Panaro MA, Acquafredda A, Sisto M, Lisi S, Maffione AB, Mitolo V. Biological role of the N-formyl peptide receptors. Immunopharmacol Immunotoxicol 2006; 28:103-27. [PMID: 16684671 DOI: 10.1080/08923970600625975] [Citation(s) in RCA: 51] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
Ligation of N-formyl-methionyl-leucyl-phenylalanine (fMLP) to its specific cell surface receptors triggers different cascades of biochemical events, eventually leading to cellular activation. The formyl peptide receptors (FPRs) are members of the seven-transmembrane, G-protein coupled receptors superfamily, expressed at high levels on polymorphonuclear and mononuclear phagocytes. The main responses elicited upon ligation of formylated peptides, referred to as cellular activation, are those of morphological polarization, locomotion, production of reactive-oxygen species and release of proteolytic enzymes. FPRs have in recent years been shown to be expressed also in several non myelocytic populations, suggesting other unidentified functions for this receptor family, independent of the inflammatory response. Finally, a number of ligands acting as exogenous or host-derived agonists for FPRs, as well as ligands acting as FPRs antagonists, have been described, indicating that these receptors may be differentially modulated by distinct molecules.
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Affiliation(s)
- M A Panaro
- Department of Human Anatomy and Histology, University of Bari, Italy.
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