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Corticosterone Inhibits LPS-Induced NLRP3 Inflammasome Priming in Macrophages by Suppressing Xanthine Oxidase. Mediators Inflamm 2020; 2020:6959741. [PMID: 32508525 PMCID: PMC7251469 DOI: 10.1155/2020/6959741] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2020] [Accepted: 04/27/2020] [Indexed: 12/22/2022] Open
Abstract
Following traumatic insult and associated pathogen infection, innate immunity is activated during the perioperative period, especially the NLRP3 inflammasome in macrophages. The neuroendocrine response is also rapidly activated to regulate excessive inflammation; however, the molecular mechanisms are still not completely clear. This study is aimed at investigating the modulation of NLRP3 inflammasome priming by endogenous glucocorticoids (corticosterone, CORT) and its relationship with xanthine oxidase (XO). RAW264.7 murine macrophages were stimulated with LPS (1 μg/ml). LPS-induced NLRP3 expression was pretreated by CORT at different concentrations (0-900 ng/ml). Then, the effect of higher concentrations of CORT (700 ng/ml) on LPS-induced NLRP3 expression and the effect of allopurinol (250 μg/ml) were observed. Finally, the effects of a CORT antagonist (RU486) on XO expression and activity and NLRP3 expression in macrophages were further analyzed. Supernatant levels IL-1β and IL-18 were measured. The results showed that LPS-induced NLRP3 expression was upregulated further by pretreatment with CORT (300 ng/ml) (P < 0.05); however, higher concentrations of CORT (greater than 700 ng/ml) downregulated NLRP3 expression (P < 0.01) and the expression and activity of XO (P < 0.05 and P < 0.01, respectively). Allopurinol significantly inhibited NLRP3 expression. However, XO expression and activity, NLRP3 expression, and supernatant IL-1β and IL-18 levels were significantly increased in the RU486 group compared with the CORT group. In conclusion, our results suggested that CORT inhibits LPS-induced NLRP3 inflammasome priming in macrophages. The underlying mechanism is related to the modulation of XO expression and activity, which may be involved in priming and activating the NLRP3 inflammasome.
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102
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Standardised comparison of limonene-derived monoterpenes identifies structural determinants of anti-inflammatory activity. Sci Rep 2020; 10:7199. [PMID: 32350292 PMCID: PMC7190660 DOI: 10.1038/s41598-020-64032-1] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2019] [Accepted: 03/30/2020] [Indexed: 01/09/2023] Open
Abstract
Mint species are widely used in traditional and conventional medicine as topical analgesics for osteoarthritic pain and for disorders of the gastrointestinal and respiratory tracts which are all associated with chronic inflammation. To identify the structural determinants of anti-inflammatory activity and potency which are required for chemical optimization towards development of new anti-inflammatory drugs, a selected group of monoterpenes especially abundant in mint species was screened by measuring bacterial lipopolysacharide (LPS)-induced nitric oxide (NO) production in murine macrophages. Nine compounds significantly decreased LPS-induced NO production by more than 30%. IC50 values were calculated showing that the order of potency is: (S)-(+)-carvone > (R)-(−)-carvone > (+)-dihydrocarveol > (S)-8-hydroxycarvotanacetone > (R)-8-hydroxycarvotanacetone > (+)-dihydrocarvone > (−)-carveol > (−)-dihydrocarveol > (S)-(-)-pulegone. Considering the carbon numbering relative to the common precursor, limonene, the presence of an oxygenated group at C6 conjugated to a double bond at C1 and an isopropenyl group and S configuration at C4 are the major chemical features relevant for activity and potency. The most potent compound, (S)-(+)-carvone, significantly decreased the expression of NOS2 and IL-1β in macrophages and in a cell model of osteoarthritis using primary human chondrocytes. (S)-(+)-carvone may be efficient in halting inflammation-related diseases, like osteoarthritis.
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103
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Yang J, Wise L, Fukuchi KI. TLR4 Cross-Talk With NLRP3 Inflammasome and Complement Signaling Pathways in Alzheimer's Disease. Front Immunol 2020; 11:724. [PMID: 32391019 PMCID: PMC7190872 DOI: 10.3389/fimmu.2020.00724] [Citation(s) in RCA: 165] [Impact Index Per Article: 41.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2020] [Accepted: 03/30/2020] [Indexed: 01/02/2023] Open
Abstract
Amyloid plaques, mainly composed of abnormally aggregated amyloid β-protein (Aβ) in the brain parenchyma, and neurofibrillary tangles (NFTs), consisting of hyperphosphorylated tau protein aggregates in neurons, are two pathological hallmarks of Alzheimer's disease (AD). Aβ fibrils and tau aggregates in the brain are closely associated with neuroinflammation and synapse loss, characterized by activated microglia and dystrophic neurites. Genome-wide genetic association studies revealed important roles of innate immune cells in the pathogenesis of late-onset AD by recognizing a dozen genetic risk loci that modulate innate immune activities. Furthermore, microglia, brain resident innate immune cells, have been increasingly recognized to play key, opposing roles in AD pathogenesis by either eliminating toxic Aβ aggregates and enhancing neuronal plasticity or producing proinflammatory cytokines, reactive oxygen species, and synaptotoxicity. Aggregated Aβ binds to toll-like receptor 4 (TLR4) and activates microglia, resulting in increased phagocytosis and cytokine production. Complement components are associated with amyloid plaques and NFTs. Aggregated Aβ can activate complement, leading to synapse pruning and loss by microglial phagocytosis. Systemic inflammation can activate microglial TLR4, NLRP3 inflammasome, and complement in the brain, leading to neuroinflammation, Aβ accumulation, synapse loss and neurodegeneration. The host immune response has been shown to function through complex crosstalk between the TLR, complement and inflammasome signaling pathways. Accordingly, targeting the molecular mechanisms underlying the TLR-complement-NLRP3 inflammasome signaling pathways can be a preventive and therapeutic approach for AD.
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Affiliation(s)
- Junling Yang
- Department of Cancer Biology and Pharmacology, University of Illinois College of Medicine at Peoria, Peoria, IL, United States
| | - Leslie Wise
- Department of Cancer Biology and Pharmacology, University of Illinois College of Medicine at Peoria, Peoria, IL, United States
| | - Ken-Ichiro Fukuchi
- Department of Cancer Biology and Pharmacology, University of Illinois College of Medicine at Peoria, Peoria, IL, United States
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104
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The Nlrp3 inflammasome as a "rising star" in studies of normal and malignant hematopoiesis. Leukemia 2020; 34:1512-1523. [PMID: 32313108 PMCID: PMC7266743 DOI: 10.1038/s41375-020-0827-8] [Citation(s) in RCA: 68] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2020] [Revised: 03/26/2020] [Accepted: 03/31/2020] [Indexed: 02/08/2023]
Abstract
Recent investigations indicate that hematopoiesis is coregulated by innate immunity signals and by pathways characteristic of the activation of innate immunity cells that also operate in normal hematopoietic stem progenitor cells (HSPCs). This should not be surprising because of the common developmental origin of these cells from a hemato/lymphopoietic stem cell. An important integrating factor is the Nlrp3 inflammasome, which has emerged as a major sensor of changes in body microenvironments, cell activation, and cell metabolic activity. It is currently the best-studied member of the inflammasome family expressed in hematopoietic and lymphopoietic cells, including also HSPCs. It is proposed as playing a role in (i) the development and expansion of HSPCs, (ii) their release from bone marrow (BM) into peripheral blood (PB) in stress situations and during pharmacological mobilization, (iii) their homing to BM after transplantation, and (iv) their aging and the regulation of hematopoietic cell metabolism. The Nlrp3 inflammasome is also involved in certain hematological pathologies, including (i) myelodysplastic syndrome, (ii) myeloproliferative neoplasms, (iii) leukemia, and (iv) graft-versus-host disease (GvHD) after transplantation. The aim of this review is to shed more light on this intriguing intracellular protein complex that has become a “rising star” in studies focused on both normal steady-state and pathological hematopoiesis.
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105
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Ravel JM, Monraz Gomez LC, Sompairac N, Calzone L, Zhivotovsky B, Kroemer G, Barillot E, Zinovyev A, Kuperstein I. Comprehensive Map of the Regulated Cell Death Signaling Network: A Powerful Analytical Tool for Studying Diseases. Cancers (Basel) 2020; 12:E990. [PMID: 32316560 PMCID: PMC7226067 DOI: 10.3390/cancers12040990] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2020] [Accepted: 03/10/2020] [Indexed: 12/25/2022] Open
Abstract
The processes leading to, or avoiding cell death are widely studied, because of their frequent perturbation in various diseases. Cell death occurs in three highly interconnected steps: Initiation, signaling and execution. We used a systems biology approach to gather information about all known modes of regulated cell death (RCD). Based on the experimental data retrieved from literature by manual curation, we graphically depicted the biological processes involved in RCD in the form of a seamless comprehensive signaling network map. The molecular mechanisms of each RCD mode are represented in detail. The RCD network map is divided into 26 functional modules that can be visualized contextually in the whole seamless network, as well as in individual diagrams. The resource is freely available and accessible via several web platforms for map navigation, data integration, and analysis. The RCD network map was employed for interpreting the functional differences in cell death regulation between Alzheimer's disease and non-small cell lung cancer based on gene expression data that allowed emphasizing the molecular mechanisms underlying the inverse comorbidity between the two pathologies. In addition, the map was used for the analysis of genomic and transcriptomic data from ovarian cancer patients that provided RCD map-based signatures of four distinct tumor subtypes and highlighted the difference in regulations of cell death molecular mechanisms.
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Affiliation(s)
- Jean-Marie Ravel
- Institut Curie, PSL Research University, Mines Paris Tech, Inserm, U900, 75005 Paris, France; (J.-M.R.); (L.C.M.G.); (N.S.); (L.C.); (E.B.); (A.Z.)
- Laboratoire de génétique médicale, CHRU-Nancy, F-54000 Nancy, France
- Inserm, NGERE, Université de Lorraine, F-54000 Nancy, France
| | - L. Cristobal Monraz Gomez
- Institut Curie, PSL Research University, Mines Paris Tech, Inserm, U900, 75005 Paris, France; (J.-M.R.); (L.C.M.G.); (N.S.); (L.C.); (E.B.); (A.Z.)
| | - Nicolas Sompairac
- Institut Curie, PSL Research University, Mines Paris Tech, Inserm, U900, 75005 Paris, France; (J.-M.R.); (L.C.M.G.); (N.S.); (L.C.); (E.B.); (A.Z.)
- Centre de Recherches Interdisciplinaires, Université Paris Descartes, 75006 Paris, France
| | - Laurence Calzone
- Institut Curie, PSL Research University, Mines Paris Tech, Inserm, U900, 75005 Paris, France; (J.-M.R.); (L.C.M.G.); (N.S.); (L.C.); (E.B.); (A.Z.)
| | - Boris Zhivotovsky
- Faculty of Medicine, Lomonosov Moscow State University, 119991 Moscow, Russia;
- Division of Toxicology, Institute of Environmental Medicine, Karolinska Institutet, Box 210, 17177 Stockholm, Sweden
| | - Guido Kroemer
- Centre de Recherche des Cordeliers, Equipe labellisée par la Ligue contre le cancer, Université de Paris, Sorbonne Université, Inserm U1138, Institut Universitaire de France, 75006 Paris, France;
- Metabolomics and Cell Biology Platforms, Institut Gustave Roussy, 94805 Villejuif, France
- Pôle de Biologie, Hôpital Européen Georges Pompidou, AP-HP, 75015 Paris, France
- Suzhou Institute for Systems Medicine, Chinese Academy of Medical Sciences, Suzhou 215163, China
- Karolinska Institute, Department of Women’s and Children’s Health, Karolinska University Hospital, 171 77 Stockholm, Sweden
| | - Emmanuel Barillot
- Institut Curie, PSL Research University, Mines Paris Tech, Inserm, U900, 75005 Paris, France; (J.-M.R.); (L.C.M.G.); (N.S.); (L.C.); (E.B.); (A.Z.)
| | - Andrei Zinovyev
- Institut Curie, PSL Research University, Mines Paris Tech, Inserm, U900, 75005 Paris, France; (J.-M.R.); (L.C.M.G.); (N.S.); (L.C.); (E.B.); (A.Z.)
| | - Inna Kuperstein
- Institut Curie, PSL Research University, Mines Paris Tech, Inserm, U900, 75005 Paris, France; (J.-M.R.); (L.C.M.G.); (N.S.); (L.C.); (E.B.); (A.Z.)
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106
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O'Brien WT, Pham L, Symons GF, Monif M, Shultz SR, McDonald SJ. The NLRP3 inflammasome in traumatic brain injury: potential as a biomarker and therapeutic target. J Neuroinflammation 2020; 17:104. [PMID: 32252777 PMCID: PMC7137518 DOI: 10.1186/s12974-020-01778-5] [Citation(s) in RCA: 125] [Impact Index Per Article: 31.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2020] [Accepted: 03/17/2020] [Indexed: 01/14/2023] Open
Abstract
There is a great clinical need to identify the underlying mechanisms, as well as related biomarkers, and treatment targets, for traumatic brain injury (TBI). Neuroinflammation is a central pathophysiological feature of TBI. NLRP3 inflammasome activity is a necessary component of the innate immune response to tissue damage, and dysregulated inflammasome activity has been implicated in a number of neurological conditions. This paper introduces the NLRP3 inflammasome and its implication in the pathogenesis of neuroinflammatory-related conditions, with a particular focus on TBI. Although its role in TBI has only recently been identified, findings suggest that priming and activation of the NLRP3 inflammasome are upregulated following TBI. Moreover, recent studies utilizing specific NLRP3 inhibitors have provided further evidence that this inflammasome is a major driver of neuroinflammation and neurobehavioral disturbances following TBI. In addition, there is emerging evidence that circulating inflammasome-associated proteins may have utility as diagnostic biomarkers of neuroinflammatory conditions, including TBI. Finally, novel and promising areas of research will be highlighted, including the potential involvement of the NLRP3 inflammasome in mild TBI, how factors such as biological sex may affect NLRP3 activity in TBI, and the use of emerging biomarker platforms. Taken together, this review highlights the exciting potential of the NLRP3 inflammasome as a target for treatments and biomarkers that may ultimately be used to improve TBI management.
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Affiliation(s)
- William T O'Brien
- Department of Neuroscience, Monash University, Melbourne, VIC, Australia
| | - Louise Pham
- Department of Physiology, Anatomy and Microbiology, La Trobe University, Bundoora, VIC, 3086, Australia
| | - Georgia F Symons
- Department of Neuroscience, Monash University, Melbourne, VIC, Australia
| | - Mastura Monif
- Department of Neuroscience, Monash University, Melbourne, VIC, Australia.,Department of Neurology, Alfred Health, Melbourne, VIC, 3004, Australia.,Department of Neurology, Melbourne Health, Melbourne, VIC, 3004, Australia.,Department of Physiology, The University of Melbourne, Melbourne, VIC, 3052, Australia
| | - Sandy R Shultz
- Department of Neuroscience, Monash University, Melbourne, VIC, Australia.,Department of Medicine, University of Melbourne, Melbourne, VIC, 3052, Australia
| | - Stuart J McDonald
- Department of Neuroscience, Monash University, Melbourne, VIC, Australia. .,Department of Physiology, Anatomy and Microbiology, La Trobe University, Bundoora, VIC, 3086, Australia.
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107
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Temmoku J, Fujita Y, Matsuoka N, Urano T, Furuya MY, Asano T, Sato S, Matsumoto H, Watanabe H, Kozuru H, Yatsuhashi H, Kawakami A, Migita K. Uric acid-mediated inflammasome activation in IL-6 primed innate immune cells is regulated by baricitinib. Mod Rheumatol 2020; 31:270-275. [PMID: 32148148 DOI: 10.1080/14397595.2020.1740410] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
OBJECTIVES Gout is an inflammatory arthropathy caused by the deposition of monosodium urate (MSU). The synthesis and release of IL-1β is crucial for MSU-induced synovial inflammation. The aim of the present study was to investigate the mechanism of MSU crystal-induced autoinflammatory processes. METHODS In vitro studies were used to evaluate the role of IL-6 in inflammasome activation in human neutrophils cultured with MSU crystals. Human neutrophils were stimulated with MSU in the presence or absence of IL-6 priming to determine NLRP3 inflammasome activation and subsequent cleaved caspase-1 induction or IL-1β production. RESULTS IL-6 or MSU stimulation alone did not result in the efficient IL-1β production from human neutrophils. However, MSU stimulation induced marked IL-1β production from IL-6-primed neutrophils. Pretreatment with baricitinib, which blocks IL-6 receptor signaling, prevented MSU-induced cleaved caspase-1 or IL-1β induction in IL-6-primed neutrophils. Tocilizumab pretreatment also inhibited MSU-mediated IL-1β production from IL-6-primed neutrophils. CONCLUSION Priming of human neutrophils with IL-6 promotes uric acid-mediated IL-1β secretion in the absence of microbial stimulation. These results suggest that an endogenous cytokine, IL-6, is involved in MSU-mediated NLRP3 inflammasome activation and subsequent IL-1β production from innate immune cells and has a crucial role in MSU crystal-induced synovial inflammation. These findings provide insights into uric acid-mediated autoinflammation in the innate immune system.
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Affiliation(s)
- Jumpei Temmoku
- Department of Rheumatology, Fukushima Medical University School of Medicine, Fukushima, Japan
| | - Yuya Fujita
- Department of Rheumatology, Fukushima Medical University School of Medicine, Fukushima, Japan
| | - Naoki Matsuoka
- Department of Rheumatology, Fukushima Medical University School of Medicine, Fukushima, Japan
| | - Takeshi Urano
- Department of Biochemistry, Shimane University School of Medicine, Izumo, Japan
| | - Makiko Yashiro Furuya
- Department of Rheumatology, Fukushima Medical University School of Medicine, Fukushima, Japan
| | - Tomoyuki Asano
- Department of Rheumatology, Fukushima Medical University School of Medicine, Fukushima, Japan
| | - Shuzo Sato
- Department of Rheumatology, Fukushima Medical University School of Medicine, Fukushima, Japan
| | - Haruki Matsumoto
- Department of Rheumatology, Fukushima Medical University School of Medicine, Fukushima, Japan
| | - Hiroshi Watanabe
- Department of Rheumatology, Fukushima Medical University School of Medicine, Fukushima, Japan
| | - Hideko Kozuru
- Clinical Research Center, NHO Nagasaki Medical Center, Nagasaki, Japan
| | | | - Atsushi Kawakami
- Department of Immunology and Rheumatology, Unit of Translational Medicine, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki, Japan
| | - Kiyoshi Migita
- Department of Rheumatology, Fukushima Medical University School of Medicine, Fukushima, Japan.,Clinical Research Center, NHO Nagasaki Medical Center, Nagasaki, Japan
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108
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Pirzada RH, Javaid N, Choi S. The Roles of the NLRP3 Inflammasome in Neurodegenerative and Metabolic Diseases and in Relevant Advanced Therapeutic Interventions. Genes (Basel) 2020; 11:E131. [PMID: 32012695 PMCID: PMC7074480 DOI: 10.3390/genes11020131] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2019] [Revised: 01/22/2020] [Accepted: 01/22/2020] [Indexed: 02/07/2023] Open
Abstract
Inflammasomes are intracellular multiprotein complexes in the cytoplasm that regulate inflammation activation in the innate immune system in response to pathogens and to host self-derived molecules. Recent advances greatly improved our understanding of the activation of nucleotide-binding oligomerization domain-like receptor (NLR) family pyrin domain containing 3 (NLRP3) inflammasomes at the molecular level. The NLRP3 belongs to the subfamily of NLRP which activates caspase 1, thus causing the production of proinflammatory cytokines (interleukin 1β and interleukin 18) and pyroptosis. This inflammasome is involved in multiple neurodegenerative and metabolic disorders including Alzheimer's disease, multiple sclerosis, type 2 diabetes mellitus, and gout. Therefore, therapeutic targeting to the NLRP3 inflammasome complex is a promising way to treat these diseases. Recent research advances paved the way toward drug research and development using a variety of machine learning-based and artificial intelligence-based approaches. These state-of-the-art approaches will lead to the discovery of better drugs after the training of such a system.
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Affiliation(s)
| | | | - Sangdun Choi
- Department of Molecular Science and Technology, Ajou University, Suwon 16499, Korea; (R.H.P.); (N.J.)
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109
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Bäck M, Yurdagul A, Tabas I, Öörni K, Kovanen PT. Inflammation and its resolution in atherosclerosis: mediators and therapeutic opportunities. Nat Rev Cardiol 2020; 16:389-406. [PMID: 30846875 DOI: 10.1038/s41569-019-0169-2] [Citation(s) in RCA: 523] [Impact Index Per Article: 130.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Atherosclerosis is a lipid-driven inflammatory disease of the arterial intima in which the balance of pro-inflammatory and inflammation-resolving mechanisms dictates the final clinical outcome. Intimal infiltration and modification of plasma-derived lipoproteins and their uptake mainly by macrophages, with ensuing formation of lipid-filled foam cells, initiate atherosclerotic lesion formation, and deficient efferocytotic removal of apoptotic cells and foam cells sustains lesion progression. Defective efferocytosis, as a sign of inadequate inflammation resolution, leads to accumulation of secondarily necrotic macrophages and foam cells and the formation of an advanced lesion with a necrotic lipid core, indicative of plaque vulnerability. Resolution of inflammation is mediated by specialized pro-resolving lipid mediators derived from omega-3 fatty acids or arachidonic acid and by relevant proteins and signalling gaseous molecules. One of the major effects of inflammation resolution mediators is phenotypic conversion of pro-inflammatory macrophages into macrophages that suppress inflammation and promote healing. In advanced atherosclerotic lesions, the ratio between specialized pro-resolving mediators and pro-inflammatory lipids (in particular leukotrienes) is strikingly low, providing a molecular explanation for the defective inflammation resolution features of these lesions. In this Review, we discuss the mechanisms of the formation of clinically dangerous atherosclerotic lesions and the potential of pro-resolving mediator therapy to inhibit this process.
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Affiliation(s)
- Magnus Bäck
- Department of Cardiology, Karolinska University Hospital, Stockholm, Sweden
| | - Arif Yurdagul
- Columbia University Irving Medical Center, New York, NY, USA
| | - Ira Tabas
- Columbia University Irving Medical Center, New York, NY, USA
| | - Katariina Öörni
- Atherosclerosis Research Laboratory, Wihuri Research Institute, Helsinki, Finland.,Molecular and Integrative Biosciences Research Programme, Faculty of Biological and Environmental Sciences, University of Helsinki, Helsinki, Finland
| | - Petri T Kovanen
- Atherosclerosis Research Laboratory, Wihuri Research Institute, Helsinki, Finland.
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110
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Glial Cells-The Strategic Targets in Amyotrophic Lateral Sclerosis Treatment. J Clin Med 2020; 9:jcm9010261. [PMID: 31963681 PMCID: PMC7020059 DOI: 10.3390/jcm9010261] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2019] [Revised: 01/13/2020] [Accepted: 01/16/2020] [Indexed: 12/11/2022] Open
Abstract
Amyotrophic lateral sclerosis (ALS) is a fatal neurological disease, which is characterized by the degeneration of motor neurons in the motor cortex and the spinal cord and subsequently by muscle atrophy. To date, numerous gene mutations have been linked to both sporadic and familial ALS, but the effort of many experimental groups to develop a suitable therapy has not, as of yet, proven successful. The original focus was on the degenerating motor neurons, when researchers tried to understand the pathological mechanisms that cause their slow death. However, it was soon discovered that ALS is a complicated and diverse pathology, where not only neurons, but also other cell types, play a crucial role via the so-called non-cell autonomous effect, which strongly deteriorates neuronal conditions. Subsequently, variable glia-based in vitro and in vivo models of ALS were established and used for brand-new experimental and clinical approaches. Such a shift towards glia soon bore its fruit in the form of several clinical studies, which more or less successfully tried to ward the unfavourable prognosis of ALS progression off. In this review, we aimed to summarize current knowledge regarding the involvement of each glial cell type in the progression of ALS, currently available treatments, and to provide an overview of diverse clinical trials covering pharmacological approaches, gene, and cell therapies.
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111
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Kim J, Ahn H, Yu S, Ahn JH, Ko HJ, Kweon MN, Hong EJ, An BS, Lee E, Lee GS. IκBζ controls NLRP3 inflammasome activation via upregulation of the Nlrp3 gene. Cytokine 2020; 127:154983. [PMID: 31918161 DOI: 10.1016/j.cyto.2019.154983] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2019] [Revised: 12/12/2019] [Accepted: 12/31/2019] [Indexed: 01/05/2023]
Abstract
Inflammasome activation induces the maturation and secretion of interleukin (IL)-1β and -18, and is dependent on NF-κB signaling to induce the transcription of the inflammasome components, called the priming step. This study elucidated the role of IκBζ, an atypical IκBs (inhibitor of κB) and a coactivator of NF-κB target genes, on the activation of inflammasome. Bone marrow-derived macrophages (BMDMs) that originated from IκBζ-encoding Nfkbiz gene depletion mice presented a defect in NLRP3 inflammasome activation. In addition, the Nfkbiz+/- and Nfkbiz-/- mice significantly attenuated serum IL-1β secretion in response to a monosodium urate injection, a NLRP3 trigger, when compared with Nfkbiz-+/+ mice. The lack of IκBζ in BMDMs produced a disability in the expression of Nlrp3 and pro-Il1β mRNAs during the priming step. In addition, ectopic IκBζ expression enhanced the Nlrp3 promoter activity, and Nlrp3 and pro-Il1β transcription. Overall, IκBζ controlled the activation of NLRP3 inflammasome by upregulating the Nlrp3 gene during the priming step.
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Affiliation(s)
- Jeongeun Kim
- College of Veterinary Medicine and Institute of Veterinary Science, College of Pharmacy, Kangwon National University, Chuncheon, Gangwon 24341, Republic of Korea
| | - Huijeong Ahn
- College of Veterinary Medicine and Institute of Veterinary Science, College of Pharmacy, Kangwon National University, Chuncheon, Gangwon 24341, Republic of Korea
| | - Sangjung Yu
- College of Veterinary Medicine and Institute of Veterinary Science, College of Pharmacy, Kangwon National University, Chuncheon, Gangwon 24341, Republic of Korea
| | - Jae-Hee Ahn
- Laboratory of Microbiology and Immunology, College of Pharmacy, Kangwon National University, Chuncheon, Gangwon 24341, Republic of Korea
| | - Hyun-Jeong Ko
- Laboratory of Microbiology and Immunology, College of Pharmacy, Kangwon National University, Chuncheon, Gangwon 24341, Republic of Korea
| | - Mi-Na Kweon
- Mucosal Immunology Laboratory, Department of Convergence Medicine, University of Ulsan College of Medicine/Asan Medical Center, Seoul 05505, Republic of Korea
| | - Eui-Ju Hong
- College of Veterinary Medicine and Institute of Veterinary Science, Chungnam National University, Daejeon 34134, Republic of Korea
| | - Beum-Soo An
- Department of Biomaterial Science, College of Natural Resources and Life Science, Pusan National University, Gyeongsangnam-do 50612, Republic of Korea
| | - Eunsong Lee
- College of Veterinary Medicine and Institute of Veterinary Science, College of Pharmacy, Kangwon National University, Chuncheon, Gangwon 24341, Republic of Korea
| | - Geun-Shik Lee
- College of Veterinary Medicine and Institute of Veterinary Science, College of Pharmacy, Kangwon National University, Chuncheon, Gangwon 24341, Republic of Korea.
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112
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Wan P, Su W, Zhang Y, Li Z, Deng C, Li J, Jiang N, Huang S, Long E, Zhuo Y. LncRNA H19 initiates microglial pyroptosis and neuronal death in retinal ischemia/reperfusion injury. Cell Death Differ 2020; 27:176-191. [PMID: 31127201 PMCID: PMC7206022 DOI: 10.1038/s41418-019-0351-4] [Citation(s) in RCA: 163] [Impact Index Per Article: 40.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2018] [Revised: 04/22/2019] [Accepted: 05/02/2019] [Indexed: 12/15/2022] Open
Abstract
Ischemia-reperfusion (I/R) is a common pathology when the blood supply to an organ was disrupted and then restored. During the reperfusion process, inflammation and tissue injury were triggered, which were mediated by immunocytes and cytokines. However, the mechanisms initiating I/R-induced inflammation and driving immunocytes activation remained largely unknown. In this study, we identified long non-coding RNA (lncRNA)-H19 as the key onset of I/R-induced inflammation. We found that I/R increased lncRNA-H19 expression to significantly promote NLRP3/6 inflammasome imbalance and resulted in microglial pyroptosis, cytokines overproduction, and neuronal death. These damages were effectively inhibited by lncRNA-H19 knockout. Specifically, lncRNA-H19 functioned via sponging miR-21 to facilitate PDCD4 expression and formed a competing endogenous RNA network (ceRNET) in ischemic cascade. LncRNA H19/miR-21/PDCD4 ceRNET can directly regulate I/R-induced sterile inflammation and neuronal lesion in vivo. We thus propose that lncRNA-H19 is a previously unknown danger signals in the molecular and immunological pathways of I/R injury, and pharmacological approaches to inhibit H19 seem likely to become treatment modalities for patients in the near future based on these mechanistic findings.
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Affiliation(s)
- Peixing Wan
- 0000 0001 2360 039Xgrid.12981.33State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, 510060 Guangzhou, China ,0000000086837370grid.214458.eDepartment of Molecular, Cellular, and Developmental Biology, University of Michigan, Ann arbor, MI 48109 USA
| | - Wenru Su
- 0000 0001 2360 039Xgrid.12981.33State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, 510060 Guangzhou, China
| | - Yingying Zhang
- 0000 0001 2360 039Xgrid.12981.33State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, 510060 Guangzhou, China
| | - Zhidong Li
- 0000 0001 2360 039Xgrid.12981.33State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, 510060 Guangzhou, China
| | - Caibin Deng
- 0000 0001 2360 039Xgrid.12981.33State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, 510060 Guangzhou, China
| | - Jinmiao Li
- 0000 0001 2360 039Xgrid.12981.33State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, 510060 Guangzhou, China
| | - Nan Jiang
- 0000 0001 2360 039Xgrid.12981.33State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, 510060 Guangzhou, China
| | - Siyu Huang
- 0000 0001 2360 039Xgrid.12981.33State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, 510060 Guangzhou, China
| | - Erping Long
- 0000 0001 2360 039Xgrid.12981.33State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, 510060 Guangzhou, China
| | - Yehong Zhuo
- 0000 0001 2360 039Xgrid.12981.33State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, 510060 Guangzhou, China
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Tripodi GL, Prieto MB, Abdalla DSP. Inflammasome Activation in Human Macrophages Induced by a LDL (-) Mimetic Peptide. Inflammation 2019; 43:722-730. [PMID: 31858317 DOI: 10.1007/s10753-019-01159-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
The inflammasome is responsible for maturation of interleukin-1β (IL-1β) and interleukin-18 (IL-18) contributing to the inflammatory process in atherosclerosis. It is shown here that an electronegative low-density lipoprotein [LDL (-)] apoB-100 mimetic peptide can activate the transcriptional and posttranslational signs needed for complete inflammasome activation. This peptide, named p2C7, can activate the Toll-like receptor 4 (TLR4) that induces NF-κB activation and the transcription of inflammasome components. After blocking TLR4 with a neutralizing antibody, inflammasome component (NLRP3, CASP1, and ASC) and IL1b and IL18 gene downregulation occurred in human-derived macrophages stimulated with p2C7 or LDL (-). Moreover, the posttranslational signal was activated by the interaction between p2C7 and the lectin-type oxidized LDL receptor 1 (LOX-1), as demonstrated by the induction of caspase-1 cleavage in macrophages. The blockage of either TLR4 or LOX-1 decreased IL-1β and IL-18 secretion by human-derived macrophages as both pathways are necessary for complete inflammasome activation. These findings suggest a mechanism by which macrophages transduce the pro-inflammatory signal provided by LDL (-) ApoB-100 and its mimetic peptides to activate the inflammasome protein complex what may be relevant for the inflammatory process in atherosclerosis.
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Affiliation(s)
- Gustavo Luis Tripodi
- Department of Clinical and Toxicological Analyses, Faculty of Pharmaceutical Sciences, University of Sao Paulo, Sao Paulo, 05508-000, Brazil
| | - Marcela Bach Prieto
- Department of Clinical and Toxicological Analyses, Faculty of Pharmaceutical Sciences, University of Sao Paulo, Sao Paulo, 05508-000, Brazil
| | - Dulcineia Saes Parra Abdalla
- Department of Clinical and Toxicological Analyses, Faculty of Pharmaceutical Sciences, University of Sao Paulo, Sao Paulo, 05508-000, Brazil.
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Wang X, Chi J, Huang D, Ding L, Zhao X, Jiang L, Yu Y, Gao F. α-synuclein promotes progression of Parkinson's disease by upregulating autophagy signaling pathway to activate NLRP3 inflammasome. Exp Ther Med 2019; 19:931-938. [PMID: 32010254 PMCID: PMC6966172 DOI: 10.3892/etm.2019.8297] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2019] [Accepted: 11/20/2019] [Indexed: 12/19/2022] Open
Abstract
Mechanism by which α-synuclein affects the progression of Parkinson's disease through Pyrin Domain Containing Protein 3 (NLRP3) was explored. Peripheral blood plasma of 40 Parkinson's disease patients and 40 normal healthy people attending the department of neurology of the Third Affiliated Hospital of Qiqihar Medical University were collected from March 2018 to January 2019. The expression levels of oligomers, phosphorylated α-synuclein, interleukin-1β (IL-1β), interleukin-6 (IL-6) and transforming growth factor-α (TGF-α) in plasma were detected by ELISA. Astrocytes in mouse brain tissues were extracted by primary culture method, the cells were divided into drug group and the drug + inhibitor group. After adding 0, 5, 10 and 20 µg oligomerized α-synuclein or 5 mM autophagy inhibitor 3-Methyladenine (3-MA), the expression level of NLRP3, caspase-1, IL-1β and Atg5 proteins in the cells was detected. The expression level of IL-1β in peripheral blood of PD patients was significantly increased (0.604±0.136 µmol/l vs. 1.876±0.327 µmol/l, P=0.002), while there was no significant difference between IL-6 and TGF-α. Both oligomers (0.171±0.045 µmol/l vs. 0.676±0.084 µmol/l, P<0.0001) and phosphorylated α-synuclein (0.128±0.041 µmol/l vs. 0.849±0.108 µmol/l, P<0.0001) in peripheral blood of PD patients were significantly elevated. The expression levels of NLRP3, caspase-1 and IL-1β in mouse astrocytes all increased with the increase of the concentration of oligomerized α-synuclein, and Atg5 protein expression also increased gradually with the concentration, and reached the highest level when the concentration was 10 µg/ml. The expression levels of NLRP3, caspase-1 and IL-1β were inhibited after the addition of autophagy inhibitor 3-MA. α-synuclein mediates the activation of NLRP3 inflammasome in PD patients by upregulating Atg5 protein expression.
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Affiliation(s)
- Xiaohong Wang
- The 5th Department of Neurology, the Third Affiliated Hospital of Qiqihar Medical University, Qiqihar, Heilongjiang 161000, P.R. China
| | - Jinghong Chi
- The 5th Department of Neurology, the Third Affiliated Hospital of Qiqihar Medical University, Qiqihar, Heilongjiang 161000, P.R. China
| | - Di Huang
- The 8th Department of Neurology, the First Hospital of Qiqihar City, Qiqihar, Heilongjiang 161000, P.R. China
| | - Li Ding
- The 5th Department of Neurology, the Third Affiliated Hospital of Qiqihar Medical University, Qiqihar, Heilongjiang 161000, P.R. China
| | - Xiaojing Zhao
- The 5th Department of Neurology, the Third Affiliated Hospital of Qiqihar Medical University, Qiqihar, Heilongjiang 161000, P.R. China
| | - Lai Jiang
- The 5th Department of Neurology, the Third Affiliated Hospital of Qiqihar Medical University, Qiqihar, Heilongjiang 161000, P.R. China
| | - Yang Yu
- The 5th Department of Neurology, the Third Affiliated Hospital of Qiqihar Medical University, Qiqihar, Heilongjiang 161000, P.R. China
| | - Feng Gao
- The 5th Department of Neurology, the Third Affiliated Hospital of Qiqihar Medical University, Qiqihar, Heilongjiang 161000, P.R. China
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Higuchi K, Sm Z, Yamashita Y, Ozaki Y, Yoshimura A. Initial periodontal treatment affects nucleotide-binding domain leucine-rich repeat-containing protein 3 inflammasome priming in peripheral blood mononuclear cells. Arch Oral Biol 2019; 110:104625. [PMID: 31830640 DOI: 10.1016/j.archoralbio.2019.104625] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2019] [Revised: 10/27/2019] [Accepted: 11/26/2019] [Indexed: 11/18/2022]
Abstract
OBJECTIVE Accumulating evidence suggests an association between periodontitis and several systemic diseases, such as atherosclerosis. In the lesions of these diseases, nucleotide-binding domain leucine-rich repeat-containing protein 3 (NLRP3), apoptosis-associated speck-like protein containing a caspase activation and recruitment domain (ASC) and caspase-1 form inflammasome complex, which leads to the functional maturation of interleukin (IL)-1β via cleavage of caspase-1 in macrophages. IL-1β plays a critical role in the etiology of these diseases; however, inflammasome priming-specifically, IL-1β and NLRP3 upregulation-is necessary for effective IL-1β production. We investigated the effect of initial periodontal treatment on the inflammasome priming of peripheral blood mononuclear cells (PBMCs). METHODS Twenty-two patients with chronic periodontitis were enrolled in this study and given initial periodontal treatment. Peripheral blood samples were collected at baseline and re-evaluation (41.1 ± 29.1 d after the treatment), and the relative expression of IL-1β, and three inflammasome components, ASC, NLRP3 and Caspase-1, mRNA was determined using quantitative reverse transcription PCR. PBMCs were stimulated with silica crystals, and the IL-1β secretion was measured via enzyme-linked immunosorbent assay. RESULTS Probing pocket depth and bleeding on probing (BOP) were significantly improved after the treatment. Expression of IL-1β and ASC in the PBMCs decreased after the treatment. PBMCs stimulated with silica crystals secreted IL-1β. The treatment attenuated IL-1β secretion by PBMCs in low BOP percentages group whereas IL-1β secretion was increased in high BOP percentages group. CONCLUSION Periodontal treatment altered the inflammasome priming status of the PBMCs, however, the effects on systemic diseases need to be further investigated.
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Affiliation(s)
- Kanako Higuchi
- Department of Periodontology and Endodontology, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki, Japan
| | - Ziauddin Sm
- Department of Periodontology and Endodontology, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki, Japan
| | - Yasunori Yamashita
- Department of Periodontology and Endodontology, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki, Japan
| | - Yukio Ozaki
- Department of Periodontology and Endodontology, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki, Japan
| | - Atsutoshi Yoshimura
- Department of Periodontology and Endodontology, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki, Japan.
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Cao Z, Wang Y, Long Z, He G. Interaction between autophagy and the NLRP3 inflammasome. Acta Biochim Biophys Sin (Shanghai) 2019; 51:1087-1095. [PMID: 31609412 DOI: 10.1093/abbs/gmz098] [Citation(s) in RCA: 62] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2019] [Indexed: 12/15/2022] Open
Abstract
Autophagy, a metabolic pathway that plays an important role in maintaining the dynamic balance of cells, has two types, i.e. non-selective autophagy and selective autophagy. The role of non-selective autophagy is primarily to allow cells to circulate nutrients in an energy-limited environment, while selective autophagy primarily cleans up the organelles inside the cells to maintain the cell structure. The NLRP3 inflammasome is an innate immune response produced by the organism that can promote the secretion of interleukin-1β and interleukin-18 through caspase-1 activation and resist the damage of some pathogens. However, when the NLRP3 inflammasome is overactivated, it can cause various inflammatory diseases, such as inflammatory liver disease and inflammatory bowel disease. Many previous studies have shown that autophagy can inhibit the NLRP3 inflammasome, while in recent years, new studies have found that autophagy can also promote the NLRP3 inflammasome in some cases, and the NLRP3 inflammasome can, in turn, affect autophagy. In this review, the interaction between autophagy and the NLRP3 inflammasome is explored, and then the application of this interaction in disease treatment is discussed.
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Affiliation(s)
- Zhenrui Cao
- Chongqing Key Laboratory of Neurobiology, Institute of Neuroscience, Chongqing Medical University, Chongqing 400016, China
| | - Yanhao Wang
- Chongqing Key Laboratory of Neurobiology, Institute of Neuroscience, Chongqing Medical University, Chongqing 400016, China
| | - Zhimin Long
- Chongqing Key Laboratory of Neurobiology, Institute of Neuroscience, Chongqing Medical University, Chongqing 400016, China
- Department of Anatomy, Chongqing Medical University, Chongqing 400016, China
| | - Guiqiong He
- Chongqing Key Laboratory of Neurobiology, Institute of Neuroscience, Chongqing Medical University, Chongqing 400016, China
- Department of Anatomy, Chongqing Medical University, Chongqing 400016, China
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117
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Antagonistic role of IL-1ß and NLRP3/IL-18 genetics in chronic HIV-1 infection. Clin Immunol 2019; 209:108266. [PMID: 31669192 DOI: 10.1016/j.clim.2019.108266] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2019] [Revised: 09/23/2019] [Accepted: 10/02/2019] [Indexed: 11/20/2022]
Abstract
Host genetics affects both susceptibility and progression of HIV-1 infection. NLRP3 inflammasome provides a first-line defense in viral infections, and, accordingly, gain-of-function variants in NLRP3 have been associated with protection against HIV-1. Despite antiretroviral treatment (ART), HIV-infected patients continue to present systemic inflammation with a heterogeneous prognosis. As NLRP3 inflammasome is involved in several chronic diseases by amplifying "sterile" inflammation, its role in chronic phase of HIV infection has been postulated. Little is known about inflammasome genetics in HIV-infected patients and whether it may play a role in the different clinical outcomes. Therefore, we questioned whether NLRP3 inflammasome genetics could affect the clinical course of HIV-1 infection as it does in host/virus interaction. For this purpose, we analyzed selected single nucleotide polymorphisms (SNPs) in ART-treated HIV-infected patients (n = 300), in Long Term Non-Progressors/Elite Controllers and progressors (n = 133), and in HIV-infected individuals submitted to dendritic cell (DC)-based immunotherapy (n = 19). SNPs leading to increased activation of NLRP3 inflammasome are beneficial for patients, while SNPs that negatively affect NLRP3 activation or IL-18 production, detrimental. In contrast, gain-of-function variant in IL1B is also detrimental for patients, suggesting that while IL-1ß possible contributes to immune exhaustion, the axis NLRP3-inflammasome/IL-18 could act positively in chronic infection. Functional assays supported genetic results: NLRP3 variants associated with good quality HIV+ DC, and IL1B -511C > T with a poor one. Loss-of-function SNPs affect HIV+ T cells proliferation. These findings proposed for the first time that NLRP3 inflammasome, mainly through IL-18, play a protective role in chronic HIV infection.
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Deora V, Lee JD, Albornoz EA, McAlary L, Jagaraj CJ, Robertson AAB, Atkin JD, Cooper MA, Schroder K, Yerbury JJ, Gordon R, Woodruff TM. The microglial NLRP3 inflammasome is activated by amyotrophic lateral sclerosis proteins. Glia 2019; 68:407-421. [DOI: 10.1002/glia.23728] [Citation(s) in RCA: 81] [Impact Index Per Article: 16.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2017] [Revised: 08/15/2019] [Accepted: 09/13/2019] [Indexed: 12/12/2022]
Affiliation(s)
- Vandana Deora
- School of Biomedical Sciences, Faculty of Medicine The University of Queensland St. Lucia Queensland Australia
| | - John D. Lee
- School of Biomedical Sciences, Faculty of Medicine The University of Queensland St. Lucia Queensland Australia
- University of Queensland Centre for Clinical Research, Faculty of Medicine The University of Queensland Herston Queensland Australia
| | - Eduardo A. Albornoz
- School of Biomedical Sciences, Faculty of Medicine The University of Queensland St. Lucia Queensland Australia
- Institute for Molecular Bioscience, and Centre for Inflammation and Disease Research The University of Queensland St. Lucia Queensland Australia
| | - Luke McAlary
- School of Chemistry and Molecular Biosciences, Faculty of Science, Medicine and Health University of Wollongong Wollongong New South Wales Australia
- Illawarra Health and Medical Institute University of Wollongong Wollongong New South Wales Australia
| | - Cyril J. Jagaraj
- Faculty of Medicine and Health Sciences, Department of Biomedical Sciences, Centre for MND Research Macquarie University New South Wales Australia
| | - Avril A. B. Robertson
- Institute for Molecular Bioscience, and Centre for Inflammation and Disease Research The University of Queensland St. Lucia Queensland Australia
- School of Chemistry and Molecular Biosciences The University of Queensland St. Lucia Queensland Australia
| | - Julie D. Atkin
- Faculty of Medicine and Health Sciences, Department of Biomedical Sciences, Centre for MND Research Macquarie University New South Wales Australia
| | - Matthew A. Cooper
- Institute for Molecular Bioscience, and Centre for Inflammation and Disease Research The University of Queensland St. Lucia Queensland Australia
| | - Kate Schroder
- Institute for Molecular Bioscience, and Centre for Inflammation and Disease Research The University of Queensland St. Lucia Queensland Australia
| | - Justin J. Yerbury
- School of Chemistry and Molecular Biosciences, Faculty of Science, Medicine and Health University of Wollongong Wollongong New South Wales Australia
- Illawarra Health and Medical Institute University of Wollongong Wollongong New South Wales Australia
| | - Richard Gordon
- School of Biomedical Sciences, Faculty of Medicine The University of Queensland St. Lucia Queensland Australia
- University of Queensland Centre for Clinical Research, Faculty of Medicine The University of Queensland Herston Queensland Australia
| | - Trent M. Woodruff
- School of Biomedical Sciences, Faculty of Medicine The University of Queensland St. Lucia Queensland Australia
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Le Jan S, Muller C, Plee J, Durlach A, Bernard P, Antonicelli F. IL-23/IL-17 Axis Activates IL-1β-Associated Inflammasome in Macrophages and Generates an Auto-Inflammatory Response in a Subgroup of Patients With Bullous Pemphigoid. Front Immunol 2019; 10:1972. [PMID: 31507596 PMCID: PMC6718471 DOI: 10.3389/fimmu.2019.01972] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2019] [Accepted: 08/05/2019] [Indexed: 12/28/2022] Open
Abstract
Bullous Pemphigoid (BP) is a skin autoimmune blistering disease characterized by immune-mediated degradation of the dermo-epidermal junction and release of a large number of inflammatory cytokines. Interleukin-1β (IL-1β) is a pleiotropic pro-inflammatory cytokine associated with inflammasome activation and known to be pivotal in several auto-immune and auto-inflammatory diseases. We sought to clarify the presence of inflammasome-dependent IL-1β and to investigate its role in BP. Skin biopsy specimens (n = 13), serum (n = 60), blister fluid (n = 26), and primary inflammatory cells from patients with BP were used to investigate inflammasome activation and function. We here highlighted a differential occurrence of a functional in situ inflammasome in patients with BP, biologically distinguished by IL-1β and NLRP3 expression. Clinically, elevated IL-1β levels were associated with the presence of erythema and urticarial plaques reflecting the inflammatory phase preceding blister formation. We further identified IL-17 and IL-23 as important molecules favoring IL-1β expression in monocyte-derived macrophages from BP patients. Finally, we demonstrated the ability of IL-1β to stimulate the release of the matrix metalloproteinase-9 in those macrophages, reinforcing the role of IL-1β in the auto-amplification loop of the inflammatory response associated to BP. However, whether this inflammasome is an epiphenomenon associated with BP disease or constitutes an amplification inflammatory step in certain patients still need to be determined. In the context of a precision medicine approach, our findings allowed us to delineate a subgroup of patients with BP that showed similarities with auto-inflammatory diseases. Subsequently, this opens up alternative therapeutic strategies targeting IL-1β pathway in the aim to control the early, pre-blistering inflammatory phase. Ultimately, this could also help in reducing the detrimental effects associated with high doses of corticosteroids treatment.
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Affiliation(s)
- Sébastien Le Jan
- Laboratory of Dermatology, EA7509 IRMAIC, University of Reims-Champagne-Ardenne, Reims, France
| | - Céline Muller
- Department of Dermatology, University Hospital, University of Reims-Champagne-Ardenne, Reims, France
| | - Julie Plee
- Department of Dermatology, University Hospital, University of Reims-Champagne-Ardenne, Reims, France
| | - Anne Durlach
- Laboratory Pol Bouin, Hospital Maison Blanche, University Hospital, University of Reims-Champagne-Ardenne, Reims, France
| | - Philippe Bernard
- Laboratory of Dermatology, EA7509 IRMAIC, University of Reims-Champagne-Ardenne, Reims, France
| | - Frank Antonicelli
- Laboratory of Dermatology, EA7509 IRMAIC, University of Reims-Champagne-Ardenne, Reims, France.,Department of Biological Sciences, Immunology, UFR Odontology, University of Reims-Champagne-Ardenne, Reims, France
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Abstract
PURPOSE OF REVIEW Activated protein C (APC) is a homeostatic coagulation protease with anticoagulant and cytoprotective activities. Focusing on APC's effects in the brain, this review discusses three different scenarios that illustrate how APC functions are intimately affecting the physiology and pathophysiology of the brain. RECENT FINDINGS Cytoprotective APC therapy holds promise for the treatment of ischemic stroke, and a recently completed trial suggested that cytoprotective-selective 3K3A-APC reduced bleeding in ischemic stroke patients. In contrast, APC's anticoagulant activity contributes to brain bleeding as shown by the disproportional upregulation of APC generation in cerebral cavernous malformations lesions in mice. However, too little APC generation also contributes to maladies of the brain, such as in case of cerebral malaria where the binding of infected erythrocytes to the endothelial protein C receptor (EPCR) may interfere with the EPCR-dependent functions of the protein C pathway. Furthermore, discoveries of new activities of APC such as the inhibition of the NLRP3-mediated inflammasome and of new applications of APC therapy such as in Alzheimer's disease and graft-versus-host disease continue to advance our knowledge of this important proteolytic regulatory system. SUMMARY APC's many activities or lack thereof are intimately involved in multiple neuropathologies, providing abundant opportunities for translational research.
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Bao J, Sun T, Yue Y, Xiong S. Macrophage NLRP3 inflammasome activated by CVB3 capsid proteins contributes to the development of viral myocarditis. Mol Immunol 2019; 114:41-48. [PMID: 31336248 DOI: 10.1016/j.molimm.2019.07.012] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2019] [Revised: 06/28/2019] [Accepted: 07/11/2019] [Indexed: 12/18/2022]
Abstract
Viral myocarditis, mainly caused by enteroviruses specially coxsackievirus B3 (CVB3) infection, is a common clinical cardiovascular disease and characterized by cardiac massive inflammation. Our previous study showed that CVB3-induced myocardial NLRP3 contributed to the development of viral myocarditis. In this study, we found that beside of being up-regulated in myocardiocytes, NLPR3 was also obviously increased in the cardiac infiltrating macrophages. While whether this accumulated NLRP3 influences, macrophage inflammatory responses remains unknown. By adoptive transfer assays, we found that mice receiving NLRP3 up-regulated macrophages showed much more abundant cardiac IL-1β production and more severe myocardial inflammation, while those receiving NLRP3 down-regulated macrophages showed much less IL-1β production and milder myocarditis, indicating that NLRP3 up-regulated macrophages played a pathological role in CVB3-induced myocarditis. In addition, we further found that it was CVB3 capsid proteins VP1 (predominant) and VP2, but not viral RNAs, robustly triggered macrophage NLRP3 up-regulation and activation. Our study demonstrated macrophage NLRP3 inflammasome could be efficiently be activated by CVB3 capsid proteins, and contributed to the pathogenesis of viral myocarditis. It might provide some clues to the development of new therapeutic strategies based on macrophage NLRP3 modulation.
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Affiliation(s)
- Jingyin Bao
- Jiangsu Key Laboratory of Infection and Immunity, Institutes of Biology and Medical Sciences, Soochow University, Suzhou, 215123, China
| | - Tianle Sun
- Jiangsu Key Laboratory of Infection and Immunity, Institutes of Biology and Medical Sciences, Soochow University, Suzhou, 215123, China
| | - Yan Yue
- Jiangsu Key Laboratory of Infection and Immunity, Institutes of Biology and Medical Sciences, Soochow University, Suzhou, 215123, China.
| | - Sidong Xiong
- Jiangsu Key Laboratory of Infection and Immunity, Institutes of Biology and Medical Sciences, Soochow University, Suzhou, 215123, China.
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Wooff Y, Man SM, Aggio-Bruce R, Natoli R, Fernando N. IL-1 Family Members Mediate Cell Death, Inflammation and Angiogenesis in Retinal Degenerative Diseases. Front Immunol 2019; 10:1618. [PMID: 31379825 PMCID: PMC6646526 DOI: 10.3389/fimmu.2019.01618] [Citation(s) in RCA: 142] [Impact Index Per Article: 28.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2019] [Accepted: 06/28/2019] [Indexed: 12/22/2022] Open
Abstract
Inflammation underpins and contributes to the pathogenesis of many retinal degenerative diseases. The recruitment and activation of both resident microglia and recruited macrophages, as well as the production of cytokines, are key contributing factors for progressive cell death in these diseases. In particular, the interleukin 1 (IL-1) family consisting of both pro- and anti-inflammatory cytokines has been shown to be pivotal in the mediation of innate immunity and contribute directly to a number of retinal degenerations, including Age-Related Macular Degeneration (AMD), diabetic retinopathy, retinitis pigmentosa, glaucoma, and retinopathy of prematurity (ROP). In this review, we will discuss the role of IL-1 family members and inflammasome signaling in retinal degenerative diseases, piecing together their contribution to retinal disease pathology, and identifying areas of research expansion required to further elucidate their function in the retina.
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Affiliation(s)
- Yvette Wooff
- The John Curtin School of Medical Research, The Australian National University, Canberra, ACT, Australia.,ANU Medical School, The Australian National University, Canberra, ACT, Australia
| | - Si Ming Man
- The John Curtin School of Medical Research, The Australian National University, Canberra, ACT, Australia
| | - Riemke Aggio-Bruce
- The John Curtin School of Medical Research, The Australian National University, Canberra, ACT, Australia
| | - Riccardo Natoli
- The John Curtin School of Medical Research, The Australian National University, Canberra, ACT, Australia.,ANU Medical School, The Australian National University, Canberra, ACT, Australia
| | - Nilisha Fernando
- The John Curtin School of Medical Research, The Australian National University, Canberra, ACT, Australia
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Sokolova M, Sjaastad I, Louwe MC, Alfsnes K, Aronsen JM, Zhang L, Haugstad SB, Bendiksen BA, Øgaard J, Bliksøen M, Lien E, Berge RK, Aukrust P, Ranheim T, Yndestad A. NLRP3 Inflammasome Promotes Myocardial Remodeling During Diet-Induced Obesity. Front Immunol 2019; 10:1621. [PMID: 31379826 PMCID: PMC6648799 DOI: 10.3389/fimmu.2019.01621] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2018] [Accepted: 06/28/2019] [Indexed: 12/20/2022] Open
Abstract
Background: Obesity is an increasingly prevalent metabolic disorder in the modern world and is associated with structural and functional changes in the heart. The NLRP3 inflammasome is an innate immune sensor that can be activated in response to endogenous danger signals and triggers activation of interleukin (IL)-1β and IL-18. Increasing evidence points to the involvement of the NLRP3 inflammasome in obesity-induced inflammation and insulin resistance, and we hypothesized that it also could play a role in the development of obesity induced cardiac alterations. Methods and Results: WT, Nlrp3−/−, and ASC−/− (Pycard−/−) male mice were exposed to high fat diet (HFD; 60 cal% fat) or control diet for 52 weeks. Cardiac structure and function were evaluated by echocardiography and magnetic resonance imaging, respectively. Whereas, NLRP3 and ASC deficiency did not affect the cardiac hypertrophic response to obesity, it was preventive against left ventricle concentric remodeling and impairment of diastolic function. Furthermore, whereas NLRP3 and ASC deficiency attenuated systemic inflammation in HFD fed mice; long-term HFD did not induce significant cardiac fibrosis or inflammation, suggesting that the beneficial effects of NLRP3 inflammasome deficiency on myocardial remodeling at least partly reflect systemic mechanisms. Nlrp3 and ASC (Pycard) deficient mice were also protected against obesity-induced systemic metabolic dysregulation, as well as lipid accumulation and impaired insulin signaling in hepatic and cardiac tissues. Conclusions: Our data indicate that the NLRP3 inflammasome modulates cardiac concentric remodeling in obesity through effects on systemic inflammation and metabolic disturbances, with effect on insulin signaling as a potential mediator within the myocardium.
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Affiliation(s)
- Marina Sokolova
- Research Institute of Internal Medicine, Oslo University Hospital, Rikshospitalet, Oslo, Norway.,Faculty of Medicine, Institute of Clinical Medicine, University of Oslo, Oslo, Norway.,Center for Heart Failure Research, University of Oslo, Oslo, Norway.,K.G. Jebsen Center for Cardiac Research, University of Oslo, Oslo, Norway
| | - Ivar Sjaastad
- K.G. Jebsen Center for Cardiac Research, University of Oslo, Oslo, Norway.,Institute for Experimental Medical Research, Oslo University Hospital Ullevål, Oslo, Norway
| | - Mieke C Louwe
- Research Institute of Internal Medicine, Oslo University Hospital, Rikshospitalet, Oslo, Norway.,Faculty of Medicine, Institute of Clinical Medicine, University of Oslo, Oslo, Norway.,Center for Heart Failure Research, University of Oslo, Oslo, Norway.,K.G. Jebsen Center for Cardiac Research, University of Oslo, Oslo, Norway
| | - Katrine Alfsnes
- Research Institute of Internal Medicine, Oslo University Hospital, Rikshospitalet, Oslo, Norway
| | - Jan Magnus Aronsen
- Institute for Experimental Medical Research, Oslo University Hospital Ullevål, Oslo, Norway.,Bjørknes College, Oslo, Norway
| | - Lili Zhang
- Center for Heart Failure Research, University of Oslo, Oslo, Norway.,Institute for Experimental Medical Research, Oslo University Hospital Ullevål, Oslo, Norway
| | - Solveig B Haugstad
- Center for Heart Failure Research, University of Oslo, Oslo, Norway.,Institute for Experimental Medical Research, Oslo University Hospital Ullevål, Oslo, Norway
| | - Bård Andre Bendiksen
- Center for Heart Failure Research, University of Oslo, Oslo, Norway.,Institute for Experimental Medical Research, Oslo University Hospital Ullevål, Oslo, Norway
| | - Jonas Øgaard
- Research Institute of Internal Medicine, Oslo University Hospital, Rikshospitalet, Oslo, Norway
| | - Marte Bliksøen
- Research Institute of Internal Medicine, Oslo University Hospital, Rikshospitalet, Oslo, Norway
| | - Egil Lien
- Division of Infectious Diseases and Immunology, University of Massachusetts Medical School, Worcester, MA, United States.,Centre of Molecular Inflammation Research, Norwegian University of Science and Technology (NTNU), Trondheim, Norway
| | - Rolf K Berge
- Department of Clinical Science, Department of Heart Disease, Haukeland University Hospital, University of Bergen, Bergen, Norway
| | - Pål Aukrust
- Research Institute of Internal Medicine, Oslo University Hospital, Rikshospitalet, Oslo, Norway.,Faculty of Medicine, Institute of Clinical Medicine, University of Oslo, Oslo, Norway.,K.G. Jebsen Center for Cardiac Research, University of Oslo, Oslo, Norway.,Section of Clinical Immunology and Infectious Diseases, Oslo University Hospital Rikshospitalet, Oslo, Norway
| | - Trine Ranheim
- Research Institute of Internal Medicine, Oslo University Hospital, Rikshospitalet, Oslo, Norway.,Faculty of Medicine, Institute of Clinical Medicine, University of Oslo, Oslo, Norway.,Center for Heart Failure Research, University of Oslo, Oslo, Norway.,K.G. Jebsen Center for Cardiac Research, University of Oslo, Oslo, Norway
| | - Arne Yndestad
- Research Institute of Internal Medicine, Oslo University Hospital, Rikshospitalet, Oslo, Norway.,Faculty of Medicine, Institute of Clinical Medicine, University of Oslo, Oslo, Norway.,Center for Heart Failure Research, University of Oslo, Oslo, Norway.,K.G. Jebsen Center for Cardiac Research, University of Oslo, Oslo, Norway
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125
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Lin L, Xu H, Bishawi M, Feng F, Samy K, Truskey G, Barbas AS, Kirk AD, Brennan TV. Circulating mitochondria in organ donors promote allograft rejection. Am J Transplant 2019; 19:1917-1929. [PMID: 30761731 PMCID: PMC6591073 DOI: 10.1111/ajt.15309] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2018] [Revised: 01/13/2019] [Accepted: 02/03/2019] [Indexed: 01/25/2023]
Abstract
The innate immune system is a critical regulator of the adaptive immune responses that lead to allograft rejection. It is increasingly recognized that endogenous molecules released from tissue injury and cell death are potent activators of innate immunity. Mitochondria, ancestrally related to bacteria, possess an array of endogenous innate immune-activating molecules. We have recently demonstrated that extracellular mitochondria are abundant in the circulation of deceased organ donors and that their presence correlates with early allograft dysfunction. Here we demonstrate the ability of mitochondria to activate endothelial cells (ECs), the initial barrier between a solid organ allograft and its host. We find that mitochondria exposure leads to the upregulation of EC adhesion molecules and their production of inflammatory cytokines and chemokines. Additionally, mitochondrial exposure causes dendritic cells to upregulate costimulatory molecules. Infusion of isolated mitochondria into heart donors leads to significant increase in allograft rejection in a murine heterotopic heart transplantation model. Finally, co-incubation of human peripheral blood mononuclear cells with mitochondria-treated ECs results in increased numbers of effector (IFN-γ+ , TNF-α+ ) CD8+ T cells. These data indicate that circulating extracellular mitochondria in deceased organ donors may directly activate allograft ECs and promote graft rejection in transplant recipients.
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Affiliation(s)
- Liwen Lin
- Departments of Surgery, Duke University Medical Center, Durham, North Carolina
| | - He Xu
- Departments of Surgery, Duke University Medical Center, Durham, North Carolina
| | - Muath Bishawi
- Departments of Surgery, Duke University Medical Center, Durham, North Carolina,Biomedical Engineering, Duke University Medical Center, Durham, North Carolina
| | - FeiFei Feng
- Department of Toxicology, Zhengzhou University, Zhengzhou, China
| | - Kannan Samy
- Departments of Surgery, Duke University Medical Center, Durham, North Carolina
| | - George Truskey
- Biomedical Engineering, Duke University Medical Center, Durham, North Carolina
| | - Andrew S Barbas
- Departments of Surgery, Duke University Medical Center, Durham, North Carolina
| | - Allan D Kirk
- Departments of Surgery, Duke University Medical Center, Durham, North Carolina,Immunology, Duke University Medical Center, Durham, North Carolina
| | - Todd V Brennan
- Department of Surgery, Cedars-Sinai Medical Center, Los Angeles, California
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126
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Knötigová PT, Mašek J, Hubatka F, Kotouček J, Kulich P, Šimečková P, Bartheldyová E, Machala M, Švadláková T, Krejsek J, Vaškovicová N, Skoupý R, Krzyžánek V, Macaulay S, Katzuba M, Fekete L, Ashcheulov P, Raška M, Kratochvílová I, Turánek J. Application of Advanced Microscopic Methods to Study the Interaction of Carboxylated Fluorescent Nanodiamonds with Membrane Structures in THP-1 Cells: Activation of Inflammasome NLRP3 as the Result of Lysosome Destabilization. Mol Pharm 2019; 16:3441-3451. [PMID: 31184896 DOI: 10.1021/acs.molpharmaceut.9b00225] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Nanodiamonds (ND), especially fluorescent NDs, represent potentially applicable drug and probe carriers for in vitro/in vivo applications. The main purpose of this study was to relate physical-chemical properties of carboxylated NDs to their intracellular distribution and impact on membranes and cell immunity-activation of inflammasome in the in vitro THP-1 cell line model. Dynamic light scattering, nanoparticle tracking analysis, and microscopic methods were used to characterize ND particles and their intracellular distribution. Fluorescent NDs penetrated the cell membranes by both macropinocytosis and mechanical cutting through cell membranes. We proved accumulation of fluorescent NDs in lysosomes. In this case, lysosomes were destabilized and cathepsin B was released into the cytoplasm and triggered pathways leading to activation of inflammasome NLRP3, as detected in THP-1 cells. Activation of inflammasome by NDs represents an important event that could underlie the described toxicological effects in vivo induced by NDs. According to our knowledge, this is the first in vitro study demonstrating direct activation of inflammasome by NDs. These findings are important for understanding the mechanism(s) of action of ND complexes and explain the ambiguity of the existing toxicological data.
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Affiliation(s)
| | - Josef Mašek
- Veterinary Research Institute , Brno 62100 , Czech Republic
| | | | - Jan Kotouček
- Veterinary Research Institute , Brno 62100 , Czech Republic
| | - Pavel Kulich
- Veterinary Research Institute , Brno 62100 , Czech Republic
| | | | | | | | - Tereza Švadláková
- Faculty of Medicine, Department of Clinical Immunology and Allergology , Charles University , Hradec Králové 500 03 , Czech Republic
| | - Jan Krejsek
- Faculty of Medicine, Department of Clinical Immunology and Allergology , Charles University , Hradec Králové 500 03 , Czech Republic
| | - Naděžda Vaškovicová
- Institute of Scientific Instruments , Czech Academy of Sciences , Brno 61264 , Czech Republic
| | - Radim Skoupý
- Institute of Scientific Instruments , Czech Academy of Sciences , Brno 61264 , Czech Republic
| | - Vladislav Krzyžánek
- Institute of Scientific Instruments , Czech Academy of Sciences , Brno 61264 , Czech Republic
| | | | | | - Ladislav Fekete
- Institute of Physics of the Czech Academy of Sciences , Na Slovance 2 , CZ-182 21 , Prague 8, Czech Republic
| | - Petr Ashcheulov
- Institute of Physics of the Czech Academy of Sciences , Na Slovance 2 , CZ-182 21 , Prague 8, Czech Republic
| | - Milan Raška
- Veterinary Research Institute , Brno 62100 , Czech Republic.,Department of Immunology, Faculty of Medicine and Dentistry , Palacky University Olomouc , Olomouc 775 15 , Czech Republic
| | - Irena Kratochvílová
- Institute of Physics of the Czech Academy of Sciences , Na Slovance 2 , CZ-182 21 , Prague 8, Czech Republic
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127
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The levels and significance of inflammasomes in the mouse retina following optic nerve crush. Int Immunopharmacol 2019; 71:313-320. [DOI: 10.1016/j.intimp.2019.03.029] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2018] [Revised: 03/03/2019] [Accepted: 03/15/2019] [Indexed: 12/23/2022]
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128
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Metformin reduced NLRP3 inflammasome activity in Ox-LDL stimulated macrophages through adenosine monophosphate activated protein kinase and protein phosphatase 2A. Eur J Pharmacol 2019; 852:99-106. [DOI: 10.1016/j.ejphar.2019.03.006] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2018] [Revised: 02/27/2019] [Accepted: 03/06/2019] [Indexed: 11/20/2022]
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129
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Murakami N, Kitajima M, Ohyama K, Aibara N, Taniguchi K, Wei M, Kitajima Y, Miura K, Masuzaki H. Comprehensive immune complexome analysis detects disease-specific immune complex antigens in seminal plasma and follicular fluids derived from infertile men and women. Clin Chim Acta 2019; 495:545-551. [PMID: 31158356 DOI: 10.1016/j.cca.2019.05.031] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2019] [Revised: 05/11/2019] [Accepted: 05/30/2019] [Indexed: 10/26/2022]
Abstract
BACKGROUND Autoimmune reactions and subsequent inflammation may underlie spermatogenic dysfunction and endometriosis-related infertility. The aim of this study is to identify disease-specific antigens in immune complexes (ICs) in seminal plasma (SP) and in follicular fluid (FF). METHODS Immune complexome analysis, in which nano-liquid chromatography-tandem mass spectrometry is employed to comprehensively identify antigens incorporated into ICs in biological fluids, was performed for specimens collected from infertile couples undergoing assisted reproduction. Forty-two male patients consisting of subjects with oligozoospermia (n = 6), asthenozoospermia (n = 8), and normal semen analysis (n = 28). Fifty-eight female patients consisting of subjects with ovarian endometriosis (n = 10) and control women without disease (n = 48). RESULTS Four disease-specific antigens were identified in subjects with oligozoospermia, while five disease-specific antigens were detected in subjects with asthenozoospermia, some of which are involved in sprematogenesis. Eight antigens were detected only in subjects with endometriosis. CONCLUSION Functional characteristics of disease-specific antigens were found to correspond to the pathogenesis of male and female infertility. The formation of ICs may contribute to spermatogenic dysfunction and endometriosis-related infertility via loss of function of the related proteins. Immune complexome analysis is expected to be a valuable tool for the investigation of novel diagnostic methods and treatment strategies for infertility.
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Affiliation(s)
- Naoko Murakami
- Department of Obstetrics and Gynecology, Nagasaki University Graduate School of Biomedical Sciences, 1-7-1 Sakamoto-machi, Nagasaki 852-8501, Japan.
| | - Michio Kitajima
- Department of Obstetrics and Gynecology, Nagasaki University Graduate School of Biomedical Sciences, 1-7-1 Sakamoto-machi, Nagasaki 852-8501, Japan.
| | - Kaname Ohyama
- Department of Pharmacy Practice, Nagasaki University Graduate School of Biomedical Sciences, 1-7-1 Sakamoto-machi, Nagasaki 852-8588, Japan.
| | - Nozomi Aibara
- Department of Pharmacy Practice, Nagasaki University Graduate School of Biomedical Sciences, 1-7-1 Sakamoto-machi, Nagasaki 852-8588, Japan.
| | - Ken Taniguchi
- Department of Obstetrics and Gynecology, Nagasaki University Graduate School of Biomedical Sciences, 1-7-1 Sakamoto-machi, Nagasaki 852-8501, Japan.
| | - Mian Wei
- Jiangsu Key Laboratory of Carcinogenesis and Intervention, China Pharmaceutical University, 24 Tongjia Alley, Gulou Qu, Nanjing 210009, China.
| | - Yuriko Kitajima
- Department of Obstetrics and Gynecology, Nagasaki University Graduate School of Biomedical Sciences, 1-7-1 Sakamoto-machi, Nagasaki 852-8501, Japan.
| | - Kiyonori Miura
- Department of Obstetrics and Gynecology, Nagasaki University Graduate School of Biomedical Sciences, 1-7-1 Sakamoto-machi, Nagasaki 852-8501, Japan.
| | - Hideaki Masuzaki
- Department of Obstetrics and Gynecology, Nagasaki University Graduate School of Biomedical Sciences, 1-7-1 Sakamoto-machi, Nagasaki 852-8501, Japan.
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130
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Abstract
Zanoni et al. (2017) show that the LPS receptor CD14 promotes internalization of oxidized phospholipids, a hallmark of dying cells, triggering hyperactivation of dendritic cells and macrophages. Their findings reveal CD14 as a regulator of responses to infection and damage, relaying context-dependent signals that determine inflammatory cell fate decisions.
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Affiliation(s)
- Florian I Schmidt
- Institute of Innate Immunity, University Hospitals, University of Bonn, Bonn, Germany
| | - Eicke Latz
- Institute of Innate Immunity, University Hospitals, University of Bonn, Bonn, Germany; Department of Infectious Diseases and Immunology, University of Massachusetts Medical School, Worcester, MA, USA; German Center for Neurodegenerative Diseases, Bonn, Germany.
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131
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Holterman CE, Boisvert NC, Thibodeau JF, Kamto E, Novakovic M, Abd-Elrahman KS, Ferguson SSG, Kennedy CRJ. Podocyte NADPH Oxidase 5 Promotes Renal Inflammation Regulated by the Toll-Like Receptor Pathway. Antioxid Redox Signal 2019; 30:1817-1830. [PMID: 30070142 DOI: 10.1089/ars.2017.7402] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
AIMS Oxidative stress associated with a proinflammatory state occurs in endothelial dysfunction, hypertension, chronic kidney disease, and diabetes. The NADPH oxidase (Nox) family of reactive oxygen species (ROS) generating enzymes is implicated in these processes, yet little information regarding the role of Nox5 is available. Our aim was to investigate the role of Nox5 in promoting renal inflammation and identify mechanisms regulating its activity. RESULTS Mice with podocyte-specific Nox5 (Nox5pod+) expression demonstrated greater glomerular inflammation and increased expression of Toll-like receptors (TLRs) and proinflammatory cytokines. In a lipopolysaccharide (LPS) model of acute kidney injury, Nox5pod+ and control littermates exhibited increased TLR and Nox1 expression. Compared with control littermates, Nox5pod+ animals developed greater glomerular inflammation and ROS production. Immortalized human podocytes (hPODs) incubated with LPS demonstrated TLR induction, increased Nox5 expression, and enhanced ROS production. Inhibition of interleukin-1 receptor-associated kinases (IRAK)-1 and -4 that lie downstream of TLR inhibited LPS-induced ROS production. Interaction between IRAK1 and Nox5 was confirmed by coimmunoprecipitation. Furthermore, LPS treatment of hPODs resulted in phosphorylation of threonine residue(s) in Nox5 that was attenuated by an IRAK1/4 inhibitor. Innovation and Conclusion: These results are the first to demonstrate that Nox5 is a downstream target of the TLR pathway and that Nox5-derived ROS may be modulated by IRAK1/4 activity. Nox5-derived ROS in podocytes can promote a proinflammatory state in the kidney via induction of cytokine expression and upregulation of TLRs leading to a feed-forward loop in which TLR activation enhances Nox5-mediated ROS production.
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Affiliation(s)
- Chet E Holterman
- 1 Kidney Research Centre, Ottawa Hospital Research Institute, Ottawa, Canada
| | - Naomi C Boisvert
- 2 Department of Cellular and Molecular Medicine, University of Ottawa, Ottawa, Canada
| | | | - Eldjonai Kamto
- 3 Faculty of Medicine, University of Ottawa, Ottawa, Canada
| | - Melica Novakovic
- 2 Department of Cellular and Molecular Medicine, University of Ottawa, Ottawa, Canada
| | - Khaled S Abd-Elrahman
- 4 University of Ottawa Brain and Mind Institute, University of Ottawa, Ottawa, Canada
- 5 Department of Pharmacology and Toxicology, Faculty of Pharmacy, Alexandria University, Alexandria, Egypt
| | - Stephen S G Ferguson
- 4 University of Ottawa Brain and Mind Institute, University of Ottawa, Ottawa, Canada
| | - Christopher R J Kennedy
- 1 Kidney Research Centre, Ottawa Hospital Research Institute, Ottawa, Canada
- 2 Department of Cellular and Molecular Medicine, University of Ottawa, Ottawa, Canada
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132
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Han X, Sun S, Sun Y, Song Q, Zhu J, Song N, Chen M, Sun T, Xia M, Ding J, Lu M, Yao H, Hu G. Small molecule-driven NLRP3 inflammation inhibition via interplay between ubiquitination and autophagy: implications for Parkinson disease. Autophagy 2019; 15:1860-1881. [PMID: 30966861 DOI: 10.1080/15548627.2019.1596481] [Citation(s) in RCA: 234] [Impact Index Per Article: 46.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Aging-related, nonresolving inflammation in both the central nervous system (CNS) and periphery predisposes individuals to the development of neurodegenerative disorders (NDDs). Inflammasomes are thought to be especially relevant to immune homeostasis, and their dysregulation contributes to inflammation and NDDs. However, few agents have been clinically shown to reduce NDD incidence by targeting inflammasomes. Our study indicated that NLRP3 (NLR family, pyrin domain containing 3) inflammasome is involved in Parkinson disease (PD) progression in patients and various murine models. In addition, the small molecule kaempferol (Ka) protected mice against LPS- and SNCA-induced neurodegeneration by inhibiting NLRP3 inflammasome activation as evidenced by the fact that Ka reduced cleaved CASP1 expression and disrupted NLRP3-PYCARD-CASP1 complex assembly with concomitant decreased IL1B secretion. Mechanically, Ka promoted macroautophagy/autophagy in microglia, leading to reduced NLRP3 protein expression, which in turn deactivated the NLRP3 inflammasome. Intriguingly, ubiquitination was involved in Ka-induced autophagic NLRP3 degradation. These findings were further confirmed in vivo as knockdown of Atg5 expression or autophagy inhibitor treatment significantly inhibited the Ka-mediated NLRP3 inflammasome inhibition and neurodegeneration amelioration. Thus, we demonstrated that Ka promotes neuroinflammatory inhibition via the cooperation of ubiquitination and autophagy, suggesting that Ka is a promising therapeutic strategy for the treatment of NDDs. Abbreviations: 3-MA: 3-methyladenine; AAV: adeno-associated virus; ACTB: actin, beta; AIF1/IBA1: allograft inflammatory factor 1; ATG5: autophagy related 5; ATG7: autophagy related 7; BafA1: bafilomycin A1; BECN1: beclin 1, autophagy related; CASP1: caspase 1; CNS: central nervous system; CQ: chloroquine; DA neurons: dopaminergic neurons; DAMPS: damage-associated molecular patterns; DAPI: 4',6-diamidino-2-phenylindole; GAPDH: glyceraldehyde-3-phosphate dehydrogenase; GFP: green fluorescent protein; GFAP: glial fibrillary acidic protein; IP: immunoprecipitation; i.p.: intraperitoneally; Ka: kaempferol; KD: knockdown; KO: knockout; LPS: lipopolysaccharide; IL1B: interleukin 1 beta; IL6: interleukin 6; Ly: lysate; MAP1LC3B/LC3B: microtubule-associated protein 1 light chain 3 beta; MPTP: 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine; NC: negative control; NDD: neurodegenerative diseases; NLRP3: NLR family, pyrin domain containing 3; OE: overexpression; PD: Parkinson disease; poly-Ub: poly-ubiquitin; PTM: post-translational modification; PYCARD/ASC: PYD and CARD domain containing; Rapa: rapamycin; RFP: red fluorescent protein; SN: supernatant; SNCA: synuclein alpha; SNpc: substantia nigra pars compacta; SQSTM1: sequestosome 1; TH: tyrosine hydroxylase; TNF/TNF-alpha: tumor necrosis factor; Ub: ubiquitin; WT: wild type.
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Affiliation(s)
- Xiaojuan Han
- Department of Pharmacology, School of Medicine and Life Sciences, Nanjing University of Chinese Medicine , Nanjing , Jiangsu , China
| | - Sifan Sun
- Department of Pharmacology, School of Medicine and Life Sciences, Nanjing University of Chinese Medicine , Nanjing , Jiangsu , China
| | - Yiming Sun
- Department of Pharmacology, School of Medicine and Life Sciences, Nanjing University of Chinese Medicine , Nanjing , Jiangsu , China
| | - Qiqi Song
- Department of Pharmacology, School of Medicine and Life Sciences, Nanjing University of Chinese Medicine , Nanjing , Jiangsu , China
| | - Jialei Zhu
- Jiangsu Key Laboratory of Neurodegeneration, Department of Pharmacology, Jiangsu Key Nanjing Medical University , Nanjing , Jiangsu , China
| | - Nanshan Song
- Jiangsu Key Laboratory of Neurodegeneration, Department of Pharmacology, Jiangsu Key Nanjing Medical University , Nanjing , Jiangsu , China
| | - Miaomiao Chen
- Jiangsu Key Laboratory of Neurodegeneration, Department of Pharmacology, Jiangsu Key Nanjing Medical University , Nanjing , Jiangsu , China
| | - Ting Sun
- Department of Pharmacology, School of Medicine and Life Sciences, Nanjing University of Chinese Medicine , Nanjing , Jiangsu , China
| | - Meiling Xia
- Department of Pharmacology, School of Medicine and Life Sciences, Nanjing University of Chinese Medicine , Nanjing , Jiangsu , China
| | - Jianhua Ding
- Jiangsu Key Laboratory of Neurodegeneration, Department of Pharmacology, Jiangsu Key Nanjing Medical University , Nanjing , Jiangsu , China
| | - Ming Lu
- Jiangsu Key Laboratory of Neurodegeneration, Department of Pharmacology, Jiangsu Key Nanjing Medical University , Nanjing , Jiangsu , China
| | - Honghong Yao
- Department of Pharmacology, School of Medicine, Southeast University , Nanjing , Jiangsu , China
| | - Gang Hu
- Department of Pharmacology, School of Medicine and Life Sciences, Nanjing University of Chinese Medicine , Nanjing , Jiangsu , China.,Jiangsu Key Laboratory of Neurodegeneration, Department of Pharmacology, Jiangsu Key Nanjing Medical University , Nanjing , Jiangsu , China
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133
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Sandall CF, MacDonald JA. Effects of phosphorylation on the NLRP3 inflammasome. Arch Biochem Biophys 2019; 670:43-57. [PMID: 30844378 DOI: 10.1016/j.abb.2019.02.020] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2019] [Revised: 02/22/2019] [Accepted: 02/27/2019] [Indexed: 01/04/2023]
Abstract
The pyrin domain containing Nod-like receptors (NLRPs) are a family of pattern recognition receptors known to regulate an array of immune signaling pathways. Emergent studies demonstrate the potential for regulatory control of inflammasome assembly by phosphorylation, notably NLRP3. Over a dozen phosphorylation sites have been identified for NLRP3 with many more suggested by phosphoproteomic studies of the NLRP family. Well characterized NLRP3 phosphorylation events include Ser198 by c-Jun terminal kinase (JNK), Ser295 by protein kinase D (PKD) and/or protein kinase A (PKA), and Tyr861 by an unknown kinase but is dephosphorylated by protein tyrosine phosphatase non-receptor 22 (PTPN22). Since the PKA- and PKD-dependent phosphorylation of NLRP3 at Ser295 is best characterized, we provide detailed review of this aspect of NLRP3 regulation. Phosphorylation of Ser295 can attenuate ATPase activity as compared to its dephosphorylated counterpart, and this event is likely unique to NLRP3. In silico modeling of NLRP3 is useful in predicting how Ser295 phosphorylation might impact upon the structural topology of the ATP-binding domain to influence catalytic activity. It is important to gain as complete understanding as possible of the complex phosphorylation-mediated mechanisms of regulation for NLRP3 in part because of its involvement in many pathological processes.
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Affiliation(s)
- Christina F Sandall
- Department of Biochemistry & Molecular Biology, Cumming School of Medicine, University of Calgary, Calgary, AB, T2N 4Z6, Canada
| | - Justin A MacDonald
- Department of Biochemistry & Molecular Biology, Cumming School of Medicine, University of Calgary, Calgary, AB, T2N 4Z6, Canada.
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134
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Kovács Z, D'Agostino DP, Diamond DM, Ari C. Exogenous Ketone Supplementation Decreased the Lipopolysaccharide-Induced Increase in Absence Epileptic Activity in Wistar Albino Glaxo Rijswijk Rats. Front Mol Neurosci 2019; 12:45. [PMID: 30930744 PMCID: PMC6427924 DOI: 10.3389/fnmol.2019.00045] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2018] [Accepted: 02/05/2019] [Indexed: 12/02/2022] Open
Abstract
It has been demonstrated previously that exogenous ketone supplements such as ketone ester (KE) decreased absence epileptic activity in a well-studied animal model of human absence epilepsy, Wistar Albino Glaxo/Rijswijk (WAG/Rij) rats. It is known that lipopolysaccharide (LPS)-generated changes in inflammatory processes increase absence epileptic activity, while previous studies show that ketone supplement-evoked ketosis can modulate inflammatory processes. Thus, we investigated in the present study whether administration of exogenous ketone supplements, which were mixed with standard rodent chow (containing 10% KE + 10% ketone salt/KS, % by weight, KEKS) for 10 days, can modulate the LPS-evoked changes in absence epileptic activity in WAG/Rij rats. At first, KEKS food alone was administered and changes in spike-wave discharge (SWD) number, SWD time, discharge frequency within SWDs, blood glucose, and beta-hydroxybutyrate (βHB) levels, as well as body weight and sleep-waking stages were measured. In a separate experiment, intraperitoneal (i.p.) injection of LPS (50 μg/kg) alone and a cyclooxygenase 1 and 2 (COX-1 and COX-2) inhibitor indomethacin (10 mg/kg) alone, as well as combined IP injection of indomethacin with LPS (indomethacin + LPS) were applied in WAG/Rij rats to elucidate their influences on SWD number. In order to determine whether KEKS food can modify the LPS-evoked changes in SWD number, KEKS food in combination with IP LPS (50 μg/kg) (KEKS + LPS), as well as KEKS food with IP indomethacin (10 mg/kg) and LPS (50 μg/kg) (KEKS + indomethacin + LPS) were also administered. We demonstrated that KEKS food significantly increased blood βHB levels and decreased not only the spontaneously generated absence epileptic activity (SWD number), but also the LPS-evoked increase in SWD number in WAG/Rij rats. Our results suggest that administration of exogenous ketone supplements (ketogenic foods) may be a promising therapeutic tool in the treatment of epilepsy.
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Affiliation(s)
- Zsolt Kovács
- Department of Biology, ELTE Eötvös Loránd University, Savaria University Centre, Szombathely, Hungary
| | - Dominic P D'Agostino
- Laboratory of Metabolic Medicine, Department of Molecular Pharmacology and Physiology, Morsani College of Medicine, University of South Florida, Tampa, FL, United States.,Institute for Human and Machine Cognition, Ocala, FL, United States
| | - David M Diamond
- Laboratory of Metabolic Medicine, Department of Molecular Pharmacology and Physiology, Morsani College of Medicine, University of South Florida, Tampa, FL, United States.,Comparative Neuroscience Research Laboratory, Department of Psychology, University of South Florida, Tampa, FL, United States
| | - Csilla Ari
- Comparative Neuroscience Research Laboratory, Department of Psychology, University of South Florida, Tampa, FL, United States
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135
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Botto S, Abraham J, Mizuno N, Pryke K, Gall B, Landais I, Streblow DN, Fruh KJ, DeFilippis VR. Human Cytomegalovirus Immediate Early 86-kDa Protein Blocks Transcription and Induces Degradation of the Immature Interleukin-1β Protein during Virion-Mediated Activation of the AIM2 Inflammasome. mBio 2019; 10:e02510-18. [PMID: 30755509 PMCID: PMC6372796 DOI: 10.1128/mbio.02510-18] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2018] [Accepted: 01/02/2019] [Indexed: 12/11/2022] Open
Abstract
Secretion of interleukin-1β (IL-1β) represents a fundamental innate immune response to microbial infection that, at the molecular level, occurs following activation of proteolytic caspases that cleave the immature protein into a secretable form. Human cytomegalovirus (HCMV) is the archetypal betaherpesvirus that is invariably capable of lifelong infection through the activity of numerous virally encoded immune evasion phenotypes. Innate immune pathways responsive to cytoplasmic double-stranded DNA (dsDNA) are known to be activated in response to contact between HCMV and host cells. Here, we used clustered regularly interspaced short palindromic repeat (CRISPR)-CRISPR-associated protein 9 (Cas9) genome editing to demonstrate that the dsDNA receptor absent in melanoma 2 (AIM2) is required for secretion of IL-1β following HCMV infection. Furthermore, dsDNA-responsive innate signaling induced by HCMV infection that leads to activation of the type I interferon response is also shown, unexpectedly, to play a contributory role in IL-1β secretion. Importantly, we also show that rendering virus particles inactive by UV exposure leads to substantially increased IL-1β processing and secretion and that live HCMV can inhibit this, suggesting the virus encodes factors that confer an inhibitory effect on this response. Further examination revealed that ectopic expression of the immediate early (IE) 86-kDa protein (IE86) is actually associated with a block in transcription of the pro-IL-1β gene and, independently, diminishment of the immature protein. Overall, these results reveal two new and distinct phenotypes conferred by the HCMV IE86 protein, as well as an unusual circumstance in which a single herpesviral protein exhibits inhibitory effects on multiple molecular processes within the same innate immune response.IMPORTANCE Persistent infection with HCMV is associated with the operation of diverse evasion phenotypes directed at antiviral immunity. Obstruction of intrinsic and innate immune responses is typically conferred by viral proteins either associated with the viral particle or expressed immediately after entry. In line with this, numerous phenotypes are attributed to the HCMV IE86 protein that involve interference with innate immune processes via transcriptional and protein-directed mechanisms. We describe novel IE86-mediated phenotypes aimed at virus-induced secretion of IL-1β. Intriguingly, while many viruses target the function of the molecular scaffold required for IL-1β maturation to prevent this response, we find that HCMV and IE86 target the IL-1β protein specifically. Moreover, we show that IE86 impairs both the synthesis of the IL-1β transcript and the stability of the immature protein. This indicates an unusual phenomenon in which a single viral protein exhibits two molecularly separate evasion phenotypes directed at a single innate cytokine.
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Affiliation(s)
- Sara Botto
- Vaccine and Gene Therapy Institute, Oregon Health and Science University, Portland, Oregon, USA
| | - Jinu Abraham
- Vaccine and Gene Therapy Institute, Oregon Health and Science University, Portland, Oregon, USA
| | - Nobuyo Mizuno
- Vaccine and Gene Therapy Institute, Oregon Health and Science University, Portland, Oregon, USA
| | - Kara Pryke
- Vaccine and Gene Therapy Institute, Oregon Health and Science University, Portland, Oregon, USA
| | - Bryan Gall
- Vaccine and Gene Therapy Institute, Oregon Health and Science University, Portland, Oregon, USA
| | - Igor Landais
- Vaccine and Gene Therapy Institute, Oregon Health and Science University, Portland, Oregon, USA
| | - Daniel N Streblow
- Vaccine and Gene Therapy Institute, Oregon Health and Science University, Portland, Oregon, USA
| | - Klaus J Fruh
- Vaccine and Gene Therapy Institute, Oregon Health and Science University, Portland, Oregon, USA
| | - Victor R DeFilippis
- Vaccine and Gene Therapy Institute, Oregon Health and Science University, Portland, Oregon, USA
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136
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Deng J, Yu XQ, Wang PH. Inflammasome activation and Th17 responses. Mol Immunol 2019; 107:142-164. [PMID: 30739833 DOI: 10.1016/j.molimm.2018.12.024] [Citation(s) in RCA: 61] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2018] [Revised: 12/20/2018] [Accepted: 12/21/2018] [Indexed: 12/24/2022]
Abstract
Immune sensing of exogenous molecules from microbes (e.g., pathogen-associated molecular patterns) and nonmicrobial molecules (e.g., asbestos, alum, and silica), as well as endogenous damage-associated molecular patterns (e.g., ATP, uric acid crystals, and amyloid A) activates innate immunity by inducing immune-related genes, including proinflammatory cytokines, which further facilitate the development of adaptive immunity. The roles of transcriptional responses downstream of immune sensing have been widely characterized in informing adaptive immunity; however, few studies focus on the effect of post-translational responses on the modulation of adaptive immune responses. Inflammasomes activated by the previously described endo- and exogenous stimuli autocatalytically induce intracellular pro-caspase-1, which cleaves the inactive precursors of interleukin-1β (IL-1β) and IL-18 into bioactive proinflammatory cytokines. IL-1β and IL-18 not only contribute to the host defense against infections by activating phagocytes, such as monocytes, macrophages, dendritic cells, and neutrophils, but also induce T-helper 17 (Th17)- and Th1-mediated adaptive immune responses. In synergy with IL-6 and IL-23, IL-1β activates IL-1 receptor (IL-1R) signaling to drive the differentiation of IL-17-producing Th17 cells, which not only play critical roles in host protective immunity to infections of bacteria, fungi, and certain viruses but also participate in the pathology of inflammatory disorders and tumorigenesis. Consequently, targeting inflammasomes and IL-1/IL-1R signaling may effectively improve the treatment of Th17-associated disorders, such as autoinflammatory diseases and cancers, thereby providing novel insights into drug development.
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Affiliation(s)
- Jian Deng
- School of Biomedical Sciences, The University of Hong Kong, Pokfulam, Hong Kong
| | - Xiao-Qiang Yu
- School of Biological Sciences, University of Missouri - Kansas City, Kansas City, MO, 64110-2499, USA
| | - Pei-Hui Wang
- Advanced Medical Research Institute, Shandong University, Jinan, Shandong 250012, China; School of Biomedical Sciences, The University of Hong Kong, Pokfulam, Hong Kong.
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137
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Sand J, Fenini G, Grossi S, Hennig P, Di Filippo M, Levesque M, Werner S, French LE, Beer HD. The NLRP1 Inflammasome Pathway Is Silenced in Cutaneous Squamous Cell Carcinoma. J Invest Dermatol 2019; 139:1788-1797.e6. [PMID: 30738816 DOI: 10.1016/j.jid.2019.01.025] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2017] [Revised: 12/18/2018] [Accepted: 01/08/2019] [Indexed: 01/27/2023]
Abstract
The inflammasome protein NLRP1 is an important innate immune sensor in human keratinocytes, and, together with ASC and caspase-1, it mediates the activation and secretion of the proinflammatory cytokines IL-1β and IL-18. These cytokines and inflammasomes can have partly opposing roles during tumorigenesis in mice. In contrast, ASC expression is impaired in different types of cancer in humans. In this study, we analyzed inflammasome activation and expression of inflammasome proteins, including their downstream cytokines, in squamous cell carcinomas, a type of nonmelanoma skin cancer derived from keratinocytes. We assessed mRNA and protein levels in human primary keratinocytes and skin carcinoma-derived SCC cell lines and detected a strong down-regulation of expression of NLRP1 inflammasome components, as well as reduced expression of the proinflammatory cytokines proIL-1β and proIL-1α. Protein levels of NLRP1, ASC, caspase-1, and proIL-1β were reduced in patient-derived SCC biopsy samples compared with healthy skin. Furthermore, the results suggest that expression of PYCARD (ASC), CASP1, IL1B, and NLRP1 is silenced by methylation in SCC cell lines. In conclusion, the down-regulation of the inflammasome pathway in SCCs might favor late tumor development in human skin.
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Affiliation(s)
- Jennifer Sand
- Department of Dermatology, University Hospital Zurich, Zurich, Switzerland; Faculty of Medicine, University of Zurich, Switzerland
| | - Gabriele Fenini
- Department of Dermatology, University Hospital Zurich, Zurich, Switzerland; Faculty of Medicine, University of Zurich, Switzerland
| | - Serena Grossi
- Department of Dermatology, University Hospital Zurich, Zurich, Switzerland; Faculty of Medicine, University of Zurich, Switzerland
| | - Paulina Hennig
- Department of Dermatology, University Hospital Zurich, Zurich, Switzerland; Faculty of Medicine, University of Zurich, Switzerland
| | - Michela Di Filippo
- Department of Dermatology, University Hospital Zurich, Zurich, Switzerland; Faculty of Medicine, University of Zurich, Switzerland
| | - Mitchell Levesque
- Department of Dermatology, University Hospital Zurich, Zurich, Switzerland; Faculty of Medicine, University of Zurich, Switzerland
| | - Sabine Werner
- Institute for Molecular Health Sciences, Department of Biology, ETH Zürich, Zurich, Switzerland
| | - Lars E French
- Department of Dermatology, University Hospital Zurich, Zurich, Switzerland; Faculty of Medicine, University of Zurich, Switzerland; Department of Dermatology and Allergology, Klinikum der Universität München, Munich, Germany
| | - Hans-Dietmar Beer
- Department of Dermatology, University Hospital Zurich, Zurich, Switzerland; Faculty of Medicine, University of Zurich, Switzerland.
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138
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Hughes FM, Hirshman NA, Inouye BM, Jin H, Stanton EW, Yun CE, Davis LG, Routh JC, Purves JT. NLRP3 Promotes Diabetic Bladder Dysfunction and Changes in Symptom-Specific Bladder Innervation. Diabetes 2019; 68:430-440. [PMID: 30425063 PMCID: PMC6341307 DOI: 10.2337/db18-0845] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/01/2018] [Accepted: 11/06/2018] [Indexed: 12/12/2022]
Abstract
The NLRP3 inflammasome senses diabetic metabolites and initiates inflammation implicated in diabetic complications and neurodegeneration. No studies have investigated NLRP3 in diabetic bladder dysfunction (DBD), despite a high clinical prevalence. In vitro, we found that numerous diabetic metabolites activate NLRP3 in primary urothelial cells. In vivo, we demonstrate NLRP3 is activated in urothelia from a genetic type 1 diabetic mouse (Akita) by week 15. We then bred an NLRP3-/- genotype into these mice and found this blocked bladder inflammation and cystometric markers of DBD. Analysis of bladder innervation established an NLRP3-dependent decrease in overall nerve density and Aδ-fibers in the bladder wall along with an increase in C-fiber populations in the urothelia, which potentially explains the decreased sense of bladder fullness reported by patients and overactivity detected early in DBD. Together, the results demonstrate the role of NLRP3 in the genesis of DBD and suggest specific NLRP3-mediated neuronal changes can produce specific DBD symptoms.
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Affiliation(s)
- Francis M Hughes
- Department of Surgery, Division of Urology, Duke University Medical Center, Durham, NC
- Department of Bioengineering, Clemson University, Clemson, SC
| | - Nathan A Hirshman
- Department of Surgery, Division of Urology, Duke University Medical Center, Durham, NC
| | - Brian M Inouye
- Department of Surgery, Division of Urology, Duke University Medical Center, Durham, NC
| | - Huixia Jin
- Department of Surgery, Division of Urology, Duke University Medical Center, Durham, NC
| | - Eloise W Stanton
- Department of Surgery, Division of Urology, Duke University Medical Center, Durham, NC
| | - Chloe E Yun
- Department of Surgery, Division of Urology, Duke University Medical Center, Durham, NC
| | - Leah G Davis
- Department of Surgery, Division of Urology, Duke University Medical Center, Durham, NC
- Duke Cancer Center Biostatistics, Duke University Medical Center, Durham, NC
| | - Jonathan C Routh
- Department of Surgery, Division of Urology, Duke University Medical Center, Durham, NC
- Department of Pediatrics, Duke University Medical Center, Durham, NC
| | - J Todd Purves
- Department of Surgery, Division of Urology, Duke University Medical Center, Durham, NC
- Department of Bioengineering, Clemson University, Clemson, SC
- Department of Pediatrics, Duke University Medical Center, Durham, NC
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139
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Sahin E, Bektur E, Baycu C, Burukoglu Dönmez D, Kaygısız B. HYPOTHYROIDISM INCREASES EXPRESSION OF STERILE INFLAMMATION PROTEINS IN RAT HEART TISSUE. ACTA ENDOCRINOLOGICA-BUCHAREST 2019; -5:39-45. [PMID: 31149058 DOI: 10.4183/aeb.2019.39] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
Purpose In this study, we aimed to investigate the relationship between hypothyroidism and sterile inflammation in rat heart tissue. Methods Groups; control group (fed with standard rat chow diet and tab water) and the hypothyroid group (fed with a standard rat chow diet and tap water containing 0.05% 6-n-propyl-2-thiouracil for 6-weeks). At the end of the experiment, histopathologic examination was performed. The T3, T4, TSH and myocardial malondialdehyde (MDA) measurements were performed with an ELISA kit. TUNEL assay was performed to demonstrate apoptosis. Sterile inflammation markers, caspase-1 and NLRP3, were investigated by immunohistochemistry and western blot. Results In histopathological examination, we observed leukocyte infiltration, myocardial atrophy, pyknotic nucleated cells and cytoplasmic vacuolization in hypothyroid group whereas the control group showed normal structure. MDA levels in myocardial tissue were significantly high in hypothyroid group when compared to the control group (P<0.05). Myocardial apoptosis increased in hypothyroid group when compared to the control group. NLRP3 and caspase-1 immunoreactivity was higher in the hypothyroid group. In ELISA results, we found significantly higher level of TSH and lower levels of T3 and T4 in hypothyroid group when compared to the control group. Conclusion Hypothyroidism increased oxidative stress, and caused inflammatory alterations in cardiac tissue. In addition, our study also suggested that thyroid hormone deficiency would increase the amounts of cardiac NLRP3 and caspase-1 protein, which indicates that hypothyroidism exerts its destructive effects through sterile inflammation. Elucidation of sterile inflammation-associated pathways may produce promising results in the treatment of hypothyroidism-induced cardiac damage.
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Affiliation(s)
- E Sahin
- Eskisehir Osmangazi University, Medicine School, Department of Histology and Embryology, Eskisehir, Turkey
| | - E Bektur
- Eskisehir Osmangazi University, Medicine School, Department of Histology and Embryology, Eskisehir, Turkey
| | - C Baycu
- Okan University, Medicine School, Department of Histology and Embryology, Istanbul, Turkey
| | - D Burukoglu Dönmez
- Eskisehir Osmangazi University, Medicine School, Department of Histology and Embryology, Eskisehir, Turkey
| | - B Kaygısız
- Eskisehir Osmangazi University, Medicine School, Department of Pharmacology, Eskisehir, Turkey
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140
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Kovács Z, D'Agostino DP, Diamond D, Kindy MS, Rogers C, Ari C. Therapeutic Potential of Exogenous Ketone Supplement Induced Ketosis in the Treatment of Psychiatric Disorders: Review of Current Literature. Front Psychiatry 2019; 10:363. [PMID: 31178772 PMCID: PMC6543248 DOI: 10.3389/fpsyt.2019.00363] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/21/2018] [Accepted: 05/10/2019] [Indexed: 12/16/2022] Open
Abstract
Globally, psychiatric disorders, such as anxiety disorder, bipolar disorder, schizophrenia, depression, autism spectrum disorder, and attention-deficit/hyperactivity disorder (ADHD) are becoming more prevalent. Although the exact pathological alterations are not yet clear, recent studies have demonstrated that widespread changes of very complex metabolic pathways may partially underlie the pathophysiology of many psychiatric diseases. Thus, more attention should be directed to metabolic-based therapeutic interventions in the treatment of psychiatric disorders. Emerging evidence from numerous studies suggests that administration of exogenous ketone supplements, such as ketone salts or ketone esters, generates rapid and sustained nutritional ketosis and metabolic changes, which may evoke potential therapeutic effects in cases of central nervous system (CNS) disorders, including psychiatric diseases. Therefore, the aim of this review is to summarize the current information on ketone supplementation as a potential therapeutic tool for psychiatric disorders. Ketone supplementation elevates blood levels of the ketone bodies: D-β-hydroxybutyrate (βHB), acetoacetate (AcAc), and acetone. These compounds, either directly or indirectly, beneficially affect the mitochondria, glycolysis, neurotransmitter levels, activity of free fatty acid receptor 3 (FFAR3), hydroxycarboxylic acid receptor 2 (HCAR2), and histone deacetylase, as well as functioning of NOD-like receptor pyrin domain 3 (NLRP3) inflammasome and mitochondrial uncoupling protein (UCP) expression. The result of downstream cellular and molecular changes is a reduction in the pathophysiology associated with various psychiatric disorders. We conclude that supplement-induced nutritional ketosis leads to metabolic changes and improvements, for example, in mitochondrial function and inflammatory processes, and suggest that development of specific adjunctive ketogenic protocols for psychiatric diseases should be actively pursued.
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Affiliation(s)
- Zsolt Kovács
- Savaria Department of Biology, ELTE Eötvös Loránd University, Savaria University Centre, Szombathely, Hungary
| | - Dominic P D'Agostino
- Department of Molecular Pharmacology and Physiology, Laboratory of Metabolic Medicine, Morsani College of Medicine, University of South Florida, Tampa, FL, United States.,Institute for Human and Machine Cognition, Ocala, FL, United States
| | - David Diamond
- Department of Molecular Pharmacology and Physiology, Laboratory of Metabolic Medicine, Morsani College of Medicine, University of South Florida, Tampa, FL, United States.,Department of Psychology, Hyperbaric Neuroscience Research Laboratory, University of South Florida, Tampa, FL, United States
| | - Mark S Kindy
- Department of Pharmaceutical Sciences, College of Pharmacy, University of South Florida, Tampa, FL, United States.,James A. Haley VA Medical Center, Tampa, FL, United States.,Shriners Hospital for Children, Tampa, FL, United States
| | - Christopher Rogers
- Department of Molecular Pharmacology and Physiology, Laboratory of Metabolic Medicine, Morsani College of Medicine, University of South Florida, Tampa, FL, United States
| | - Csilla Ari
- Department of Psychology, Hyperbaric Neuroscience Research Laboratory, University of South Florida, Tampa, FL, United States
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141
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Aira LE, Gonçalves D, Bossowski JP, Rubio-Patiño C, Chiche J, Paul-Bellon R, Mondragón L, Gesson M, Lecucq-Ottavi P, Obba S, Colosetti P, Luciano F, Bailly-Maitre B, Boyer L, Jacquel A, Robert G, Ricci JE, Ortonne JP, Passeron T, Lacour JP, Auberger P, Marchetti S. Caspase 1/11 Deficiency or Pharmacological Inhibition Mitigates Psoriasis-Like Phenotype in Mice. J Invest Dermatol 2018; 139:1306-1317. [PMID: 30571969 DOI: 10.1016/j.jid.2018.11.031] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2017] [Revised: 11/20/2018] [Accepted: 11/27/2018] [Indexed: 12/15/2022]
Abstract
Inflammatory caspases, activated within the inflammasome, are responsible for the maturation and secretion of IL-1β/IL-18. Although their expression in psoriasis was shown several years ago, little is known about the role of inflammatory caspases in the context of psoriasis. Here, we confirmed that caspases 1, 4, and 5 are activated in lesional skin from psoriasis patients. We showed in three psoriasis-like models that inflammatory caspases are activated, and accordingly, caspase 1/11 invalidation or pharmacological inhibition by Ac-YVAD-CMK (i.e., Ac-Tyr-Val-Ala-Asp-chloromethylketone) injection induced a decrease in ear thickness, erythema, scaling, inflammatory cytokine expression, and immune cell infiltration in mice. We observed that keratinocytes were primed to secrete IL-1β when cultured in conditions mimicking psoriasis. Generation of chimeric mice by bone marrow transplantation was carried out to decipher the respective contribution of keratinocytes and/or immune cells in the activation of inflammatory caspases during psoriasis-like inflammatory response. Our data showed that the presence of caspase 1/11 in the immune system is sufficient for a fully inflammatory response, whereas the absence of caspase 1/11 in keratinocytes/fibroblasts had no impact. In summary, our study indicates that inflammatory caspases activated in immune cells are implicated in psoriasis pathogenesis.
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Affiliation(s)
| | | | | | | | | | | | | | - Maéva Gesson
- Université Côte d'Azur, INSERM, C3M, Nice, France
| | | | | | | | | | | | | | | | | | | | - Jean-Paul Ortonne
- Centre Hospitalier Universitaire de Nice, Service de Dermatologie, Hôpital Archet II, Nice, France
| | - Thierry Passeron
- Université Côte d'Azur, INSERM, C3M, Nice, France; Centre Hospitalier Universitaire de Nice, Service de Dermatologie, Hôpital Archet II, Nice, France
| | - Jean-Philippe Lacour
- Centre Hospitalier Universitaire de Nice, Service de Dermatologie, Hôpital Archet II, Nice, France
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142
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Bertinaria M, Gastaldi S, Marini E, Giorgis M. Development of covalent NLRP3 inflammasome inhibitors: Chemistry and biological activity. Arch Biochem Biophys 2018; 670:116-139. [PMID: 30448387 DOI: 10.1016/j.abb.2018.11.013] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2018] [Revised: 11/12/2018] [Accepted: 11/14/2018] [Indexed: 12/12/2022]
Abstract
The NOD-like receptor family, pyrin domain-containing 3 (NLRP3) inflammasome is the best recognized and most widely implicated regulator of caspase-1 activation. It is a key regulator of innate immune response and is involved in many pathophysiological processes. Recent evidences for its inappropriate activation in autoinflammatory, autoimmune, as well as in neurodegenerative diseases attract a growing interest toward the development of small molecules NLRP3 inhibitors. Based on the knowledge of biochemical and structural aspects of NLRP3 activation, one successful strategy in the identification of NLRP3 inhibitors relies on the development of covalent irreversible inhibitors. Covalent inhibitors are reactive electrophilic molecules able to alkylate nucleophiles in the target protein. These inhibitors could ensure good efficacy and prolonged duration of action both in vitro and in vivo. In spite of these advantages, effects on other signalling pathways, prone to alkylation, may occur. In this review, we will illustrate the chemistry and the biological action of the most studied covalent NLRP3 inhibitors developed so far. A description of what we know about their mechanism of action will address the reader toward a critical understanding of NLRP3 inhibition by electrophilic compounds.
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Affiliation(s)
- Massimo Bertinaria
- Dipartimento di Scienza e Tecnologia del Farmaco, Università degli Studi di Torino, Via P. Giuria 9, 10125, Torino, Italy.
| | - Simone Gastaldi
- Dipartimento di Scienza e Tecnologia del Farmaco, Università degli Studi di Torino, Via P. Giuria 9, 10125, Torino, Italy
| | - Elisabetta Marini
- Dipartimento di Scienza e Tecnologia del Farmaco, Università degli Studi di Torino, Via P. Giuria 9, 10125, Torino, Italy
| | - Marta Giorgis
- Dipartimento di Scienza e Tecnologia del Farmaco, Università degli Studi di Torino, Via P. Giuria 9, 10125, Torino, Italy
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143
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Sokolova M, Sahraoui A, Høyem M, Øgaard J, Lien E, Aukrust P, Yndestad A, Ranheim T, Scholz H. NLRP3 inflammasome mediates oxidative stress-induced pancreatic islet dysfunction. Am J Physiol Endocrinol Metab 2018; 315:E912-E923. [PMID: 30016155 DOI: 10.1152/ajpendo.00461.2017] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Inflammasomes are multiprotein inflammatory platforms that induce caspase-1 activation and subsequently interleukin (IL)-1β and IL-18 processing. The NLRP3 inflammasome is activated by different forms of oxidative stress, and, based on the central role of IL-1β in the destruction of pancreatic islets, it could be related to the development of diabetes. We therefore investigated responses in wild-type C57Bl/6 (WT) mice, NLRP3-/- mice, and mice deficient in apoptosis-associated speck-like protein containing a caspase-recruitment domain (ASC) after exposing islets to short-term hypoxia or alloxan-induced islet damage. NLRP3-deficient islets compared with WT islets had preserved function ex vivo and were protected against hypoxia-induced cell death. Furthermore, NLRP3 and ASC-deficient mice were protected against oxidative stress-induced diabetes caused by repetitive low-dose alloxan administration, and this was associated with reduced β-cell death and reduced macrophage infiltration. This suggests that the beneficial effect of NLRP3 inflammasome deficiency on oxidative stress-mediated β-cell damage could involve reduced macrophage infiltration and activation. To support the role of macrophage activation in alloxan-induced diabetes, we injected WT mice with liposomal clodronate, which causes macrophage depletion before induction of a diabetic phenotype by alloxan treatment, resulting in improved glucose homeostasis in WT mice. We show here that the NLRP3 inflammasome acts as a mediator of hypoxia and oxidative stress in insulin-producing cells, suggesting that inhibition of the NLRP3 inflammasome could have beneficial effects on β-cell preservation.
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Affiliation(s)
- Marina Sokolova
- Research Institute of Internal Medicine, Oslo University Hospital, Rikshospitalet, Norway
- Institute of Clinical Medicine, University of Oslo , Oslo , Norway
- K.G. Jebsen Inflammation Research Center, University of Oslo , Oslo , Norway
| | - Afaf Sahraoui
- Institute of Clinical Medicine, University of Oslo , Oslo , Norway
- Institute for Surgical Research and Section for Transplantation Surgery, Oslo University Hospital , Oslo , Norway
| | - Merete Høyem
- Institute for Surgical Research and Section for Transplantation Surgery, Oslo University Hospital , Oslo , Norway
| | - Jonas Øgaard
- Research Institute of Internal Medicine, Oslo University Hospital, Rikshospitalet, Norway
| | - Egil Lien
- Division of Infectious Diseases and Immunology, University of Massachusetts Medical School , Worcester, Massachusetts
| | - Pål Aukrust
- Research Institute of Internal Medicine, Oslo University Hospital, Rikshospitalet, Norway
- Institute of Clinical Medicine, University of Oslo , Oslo , Norway
- K.G. Jebsen Inflammation Research Center, University of Oslo , Oslo , Norway
- Section of Clinical Immunology and Infectious Diseases, Oslo University Hospital , Oslo , Norway
| | - Arne Yndestad
- Research Institute of Internal Medicine, Oslo University Hospital, Rikshospitalet, Norway
- Institute of Clinical Medicine, University of Oslo , Oslo , Norway
- K.G. Jebsen Inflammation Research Center, University of Oslo , Oslo , Norway
| | - Trine Ranheim
- Research Institute of Internal Medicine, Oslo University Hospital, Rikshospitalet, Norway
- Institute of Clinical Medicine, University of Oslo , Oslo , Norway
- K.G. Jebsen Inflammation Research Center, University of Oslo , Oslo , Norway
| | - Hanne Scholz
- Institute of Clinical Medicine, University of Oslo , Oslo , Norway
- Institute for Surgical Research and Section for Transplantation Surgery, Oslo University Hospital , Oslo , Norway
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144
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NLRP3 inflammasome activation in inflammaging. Semin Immunol 2018; 40:61-73. [PMID: 30268598 DOI: 10.1016/j.smim.2018.09.001] [Citation(s) in RCA: 106] [Impact Index Per Article: 17.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/01/2018] [Revised: 09/17/2018] [Accepted: 09/18/2018] [Indexed: 02/06/2023]
Abstract
The process of aging is associated with the appearance of low-grade subclinical inflammation, termed inflammaging, that can accelerate age-related diseases. In Western societies the age-related inflammatory response can additionally be aggravated by an inflammatory response related to modern lifestyles and excess calorie consumption, a pathophysiologic inflammatory response that was coined metaflammation. Here, we summarize the current knowledge of mechanisms that drive both of these processes and focus our discussion the emerging concept that a key innate immune pathway, the NLRP3 inflammasome, is centrally involved in the recognition of triggers that appear during physiological aging and during metabolic stress. We further discuss how these processes are involved in the pathogenesis of common age-related pathologies and highlight potential strategies by which the detrimental inflammatory responses could be pharmacologically addressed.
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145
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The selective Nlrp3 inflammasome inhibitor Mcc950 attenuates lung ischemia-reperfusion injury. Biochem Biophys Res Commun 2018; 503:3031-3037. [DOI: 10.1016/j.bbrc.2018.08.089] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2018] [Accepted: 08/12/2018] [Indexed: 12/21/2022]
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146
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Sartoretto S, Gemini-Piperni S, da Silva RA, Calasans MD, Rucci N, Pires Dos Santos TM, Lima IBC, Rossi AM, Alves G, Granjeiro JM, Teti A, Zambuzzi WF. Apoptosis-associated speck-like protein containing a caspase-1 recruitment domain (ASC) contributes to osteoblast differentiation and osteogenesis. J Cell Physiol 2018; 234:4140-4153. [PMID: 30171612 DOI: 10.1002/jcp.27226] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2018] [Accepted: 07/16/2018] [Indexed: 11/11/2022]
Abstract
The role of apoptosis-associated speck-like protein containing a caspase-1 recruitment domain (ASC) in bone healing remains to be understood. To address this issue, we investigated the requirement of inflammasome-related genes in response to bone morphogenetic protein 7 (BMP7)-induced osteoblast differentiation in vitro. To validate the importance of ASC on osteogenesis, we subjected wild-type (WT) and ASC knockout C57BL/6 mice (ASC KO) to tibia defect to evaluate the bone healing process (up to 28 days). Our in vitro data showed that there is an involvement of ASC during BMP7-induced osteoblast differentiation, concomitant to osteogenic biomarker expression. Indeed, primary osteogenic cells from ASC KO presented a lower osteogenic profile than those obtained from WT mice. To validate this hypothesis, we evaluated the bone healing process of tibia defects on both WT and ASC KO mice genotypes and the ASC KO mice were not able to fully heal tibia defects up to 28 days, whereas WT tibia defects presented a higher bone de novo volume at this stage, evidencing ASC as an important molecule during osteogenic phenotype. In addition, we have shown a higher involvement of runt-related transcription factor 2 in WT sections during bone repair, as well as circulating bone alkaline phosphatase isoform when both were compared with ASC KO mice behavior. Altogether, our results showed for the first time the involvement of inflammasome during osteoblast differentiation and osteogenesis, which opens new avenues to understand the pathways involved in bone healing.
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Affiliation(s)
- Suelen Sartoretto
- Oral Surgery Department, Fluminense Federal University, Niteroi, Brazil
| | - Sara Gemini-Piperni
- Instituto Nacional de Metrologia, Normalização e Qualidade Industrial (INMETRO), Division of Life Sciences Applied Metrology (Dimav), Xerém, RJ, Brazil
| | - Rodrigo A da Silva
- Laboratório de Bioensaios e Dinâmica Celular, Department of Chemistry and Biochemistry, Bioscience Institute, Universidade Estadual Paulista, UNESP, campus Botucatu, Rubião Junior, Botucatu, Sao Paulo, Brazil
| | - Monica D Calasans
- Oral Surgery Department, Fluminense Federal University, Niteroi, Brazil
| | - Nadia Rucci
- Department of Biotechnological and Applied Clinical Sciences, University of L'Aquila, Via Vetoio-Coppito, L'Aquila, Italy
| | - Thais M Pires Dos Santos
- Nuclear Instrumentation Department, Nuclear Engineering Program, COPPE, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Inayá B C Lima
- Nuclear Instrumentation Department, Nuclear Engineering Program, COPPE, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Alexandre M Rossi
- Department of Applied Physics, Brazilian Center for Physics Research, Rua Dr. Xavier Sigaud, Urca, Rio de Janiero, Brazil
| | - Gutemberg Alves
- Antônio Pedro Hospital, Division of Clinical Research, Fluminense Federal University, Av. Marquês do Paranã, 303- Centro, Niterói-RJ, Brazil
| | - José M Granjeiro
- Instituto Nacional de Metrologia, Normalização e Qualidade Industrial (INMETRO), Division of Life Sciences Applied Metrology (Dimav), Xerém, RJ, Brazil.,Antônio Pedro Hospital, Division of Clinical Research, Fluminense Federal University, Av. Marquês do Paranã, 303- Centro, Niterói-RJ, Brazil
| | - Anna Teti
- Department of Biotechnological and Applied Clinical Sciences, University of L'Aquila, Via Vetoio-Coppito, L'Aquila, Italy
| | - Willian F Zambuzzi
- Laboratório de Bioensaios e Dinâmica Celular, Department of Chemistry and Biochemistry, Bioscience Institute, Universidade Estadual Paulista, UNESP, campus Botucatu, Rubião Junior, Botucatu, Sao Paulo, Brazil
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147
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Ferko MA, Catelas I. Effects of metal ions on caspase-1 activation and interleukin-1β release in murine bone marrow-derived macrophages. PLoS One 2018; 13:e0199936. [PMID: 30138321 PMCID: PMC6107125 DOI: 10.1371/journal.pone.0199936] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2018] [Accepted: 06/15/2018] [Indexed: 02/07/2023] Open
Abstract
Ions released from metal implants have been associated with adverse tissue reactions and are therefore a major concern. Studies with macrophages have shown that cobalt, chromium, and nickel ions can activate the NLRP3 inflammasome, a multiprotein complex responsible for the activation of caspase-1 (a proteolytic enzyme converting pro-interleukin [IL]-1β to mature IL-1β). However, the mechanism(s) of inflammasome activation by metal ions remain largely unknown. The objectives of the present study were to determine if, in macrophages: 1. caspase-1 activation and IL-1β release induced by metal ions are oxidative stress-dependent; and 2. IL-1β release induced by metal ions is NF-κB signaling pathway-dependent. Lipopolysaccharide (LPS)-primed murine bone marrow-derived macrophages (BMDM) were exposed to Co2+ (6-48 ppm), Cr3+ (100-500 ppm), or Ni2+ (12-96 ppm), in the presence or absence of a caspase-1 inhibitor (Z-WEHD-FMK), an antioxidant (L-ascorbic acid [L-AA]), or an NF-κB inhibitor (JSH-23). Culture supernatants were analyzed for caspase-1 by western blotting and/or IL-1β release by ELISA. Immunoblotting revealed the presence of caspase-1 (p20 subunit) in supernatants of BMDM incubated with Cr3+, but not with Ni2+ or Co2+. When L-AA (2 mM) was present with Cr3+, the caspase-1 p20 subunit was undetectable and IL-1β release decreased down to the level of the negative control, thereby demonstrating that caspase-1 activation and IL-1β release induced by Cr3+ was oxidative stress-dependent. ELISA demonstrated that Cr3+ induced the highest release of IL-1β, while Co2+ had no or limited effects. In the presence of Ni2+, the addition of L-AA (2 mM) also decreased IL-1β release, below the level of the negative control, suggesting that IL-1β release induced by Ni2+ was also oxidative stress-dependent. Finally, when present during both priming with LPS and activation with Cr3+, JSH-23 blocked IL-1β release, demonstrating NF-κB involvement. Overall, this study showed that while both Cr3+ and Ni2+ may be inducing inflammasome activation, Cr3+ is likely a more potent activator, acting through oxidative stress and the NF-κB signaling pathway.
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Affiliation(s)
| | - Isabelle Catelas
- Department of Mechanical Engineering, University of Ottawa, Ottawa, Ontario, Canada
- Department of Surgery, University of Ottawa, Ottawa, Ontario, Canada
- Department of Biochemistry, Microbiology and Immunology, University of Ottawa, Ottawa, Ontario, Canada
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148
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Bortolotti P, Faure E, Kipnis E. Inflammasomes in Tissue Damages and Immune Disorders After Trauma. Front Immunol 2018; 9:1900. [PMID: 30166988 PMCID: PMC6105702 DOI: 10.3389/fimmu.2018.01900] [Citation(s) in RCA: 131] [Impact Index Per Article: 21.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2017] [Accepted: 07/31/2018] [Indexed: 01/15/2023] Open
Abstract
Trauma remains a leading cause of death worldwide. Hemorrhagic shock and direct injury to vital organs are responsible for early mortality whereas most delayed deaths are secondary to complex pathophysiological processes. These processes result from imbalanced systemic reactions to the multiple aggressions associated with trauma. Trauma results in the uncontrolled local and systemic release of endogenous mediators acting as danger signals [damage-associated molecular patterns (DAMPs)]. Their recognition by the innate immune system triggers a pro-inflammatory immune response paradoxically associated with concomitant immunosuppression. These responses, ranging in intensity from inappropriate to overwhelming, promote the propagation of injuries to remote organs, leading to multiple organ failure and death. Some of the numerous DAMPs released after trauma trigger the assembly of intracellular multiprotein complexes named inflammasomes. Once activated by a ligand, inflammasomes lead to the activation of a caspase. Activated caspases allow the release of mature forms of interleukin-1β and interleukin-18 and trigger a specific pro-inflammatory cell death termed pyroptosis. Accumulating data suggest that inflammasomes, mainly NLRP3, NLRP1, and AIM2, are involved in the generation of tissue damage and immune dysfunction after trauma. Following trauma-induced DAMP(s) recognition, inflammasomes participate in multiple ways in the development of exaggerated systemic and organ-specific inflammatory response, contributing to organ damage. Inflammasomes are involved in the innate responses to traumatic brain injury and contribute to the development of acute respiratory distress syndrome. Inflammasomes may also play a role in post-trauma immunosuppression mediated by dysregulated monocyte functions. Characterizing the involvement of inflammasomes in the pathogenesis of post-trauma syndrome is a key issue as they may be potential therapeutic targets. This review summarizes the current knowledge on the roles of inflammasomes in trauma.
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Affiliation(s)
- Perrine Bortolotti
- Meakins-Christie Laboratories, Department of Medicine, Research Institute of the McGill University Health Center, Montreal, QC, Canada
| | - Emmanuel Faure
- Meakins-Christie Laboratories, Department of Medicine, Research Institute of the McGill University Health Center, Montreal, QC, Canada
| | - Eric Kipnis
- Surgical Critical Care Unit, Department of Anesthesiology and Critical Care, Centre Hospitalier Regional et Universitaire de Lille, Lille, France.,Host-Pathogen Translational Research, Faculté de Médecine, Université Lille 2 Droit et Santé, Lille, France
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149
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Zoccal KF, Ferreira GZ, Prado MK, Gardinassi LG, Sampaio SV, Faccioli LH. LTB4 and PGE2 modulate the release of MIP-1α and IL-1β by cells stimulated with Bothrops snake venoms. Toxicon 2018; 150:289-296. [DOI: 10.1016/j.toxicon.2018.06.066] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2018] [Revised: 06/04/2018] [Accepted: 06/08/2018] [Indexed: 10/14/2022]
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150
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Wang Z, Zhang A, Meng W, Wang T, Li D, Liu Z, Liu H. Ozone protects the rat lung from ischemia-reperfusion injury by attenuating NLRP3-mediated inflammation, enhancing Nrf2 antioxidant activity and inhibiting apoptosis. Eur J Pharmacol 2018; 835:82-93. [PMID: 30075224 DOI: 10.1016/j.ejphar.2018.07.059] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2018] [Revised: 07/27/2018] [Accepted: 07/30/2018] [Indexed: 12/12/2022]
Abstract
Ischemia-reperfusion injury (IRI) is a major cause of lung dysfunction during cardiovascular surgery, heart transplantation and cardiopulmonary bypass procedures, and the inflammatory response, oxidative stress, and apoptosis play key and allegedly maladaptive roles in its pathogenesis. The aim of this study was to initially elucidate whether ozone induces oxidative preconditioning by activating nuclear factor (erythroid-derived 2)-like 2 (Nrf2) and secondly to determine whether ozone oxidative preconditioning (OzoneOP) protects the lung from IRI by attenuating nucleotide-binding oligomerization domain-like receptor containing pyrin domain 3 (NLRP3)-mediated inflammation, enhancing the antioxidant activity of Nrf2 and inhibiting apoptosis. Rats treated with or without OzoneOP (2 ml containing 100 µg/kg/day) were subjected to 1 h of lung ischemia followed by 2 h of reperfusion for 10 days. Lung damage, antioxidant capacity, inflammation and apoptosis were evaluated and compared among different groups after reperfusion. OzoneOP significantly ameliorated changes in lung morphology and protected the lung from IRI by attenuating oxidative stress, inflammation-induced injury and lung apoptosis. Moreover, OzoneOP increased the expression of Nrf2 and decreased the levels of NLRP3, apoptosis-associated speck-like protein containing a caspase activation and recruitment domain (ASC), un-cleavable cysteine-requiring aspartate protease-1 (procaspase-1), cysteine-requiring aspartate protease-1 (caspase-1) and interleukin-1β (IL-1β) in the rat lungs. In summary, these results provide new insights into the molecular events modulated by ozone and suggest that ozone therapy may be an integrative support for patients with lung IRI.
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Affiliation(s)
- Zhiwen Wang
- Cardiovascular Surgery, The First Affiliated Hospital of Harbin Medical University, 23 Youzheng Street, Harbin, Heilongjiang 150001, China
| | - Ai Zhang
- General Hospital of Heilongjiang Province Land Reclamation Bureau, 235 Hashuang Road, Harbin, Heilongjiang 150088, China
| | - Weixin Meng
- Cardiovascular Surgery, The First Affiliated Hospital of Harbin Medical University, 23 Youzheng Street, Harbin, Heilongjiang 150001, China
| | - Tingting Wang
- Cardiovascular Surgery, The First Affiliated Hospital of Harbin Medical University, 23 Youzheng Street, Harbin, Heilongjiang 150001, China
| | - Dandan Li
- Institute of Keshan Disease, Harbin Medical University, 157 Baojian Road, Harbin, Heilongjiang 150081, China
| | - Zonghong Liu
- Cardiovascular Surgery, The First Affiliated Hospital of Harbin Medical University, 23 Youzheng Street, Harbin, Heilongjiang 150001, China
| | - Hongyu Liu
- Cardiovascular Surgery, The First Affiliated Hospital of Harbin Medical University, 23 Youzheng Street, Harbin, Heilongjiang 150001, China.
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