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Rahaman MH, Thygesen SJ, Maxwell MJ, Kim H, Mudai P, Nanson JD, Jia X, Vajjhala PR, Hedger A, Vetter I, Haselhorst T, Robertson AAB, Dymock B, Ve T, Mobli M, Stacey KJ, Kobe B. o-Vanillin binds covalently to MAL/TIRAP Lys-210 but independently inhibits TLR2. J Enzyme Inhib Med Chem 2024; 39:2313055. [PMID: 38416868 PMCID: PMC10903754 DOI: 10.1080/14756366.2024.2313055] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2023] [Accepted: 01/28/2024] [Indexed: 03/01/2024] Open
Abstract
Toll-like receptor (TLR) innate immunity signalling protects against pathogens, but excessive or prolonged signalling contributes to a range of inflammatory conditions. Structural information on the TLR cytoplasmic TIR (Toll/interleukin-1 receptor) domains and the downstream adaptor proteins can help us develop inhibitors targeting this pathway. The small molecule o-vanillin has previously been reported as an inhibitor of TLR2 signalling. To study its mechanism of action, we tested its binding to the TIR domain of the TLR adaptor MAL/TIRAP (MALTIR). We show that o-vanillin binds to MALTIR and inhibits its higher-order assembly in vitro. Using NMR approaches, we show that o-vanillin forms a covalent bond with lysine 210 of MAL. We confirm in mouse and human cells that o-vanillin inhibits TLR2 but not TLR4 signalling, independently of MAL, suggesting it may covalently modify TLR2 signalling complexes directly. Reactive aldehyde-containing small molecules such as o-vanillin may target multiple proteins in the cell.
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Affiliation(s)
- Md. Habibur Rahaman
- School of Chemistry and Molecular Biosciences, University of Queensland, Brisbane, Australia
- Australian Infectious Diseases Research Centre, University of Queensland, Brisbane, Australia
- Institute for Molecular Bioscience, University of Queensland, Brisbane, Australia
| | - Sara J. Thygesen
- School of Chemistry and Molecular Biosciences, University of Queensland, Brisbane, Australia
| | - Michael J. Maxwell
- Centre for Advanced Imaging, University of Queensland, Brisbane, Australia
| | - Hyoyoung Kim
- School of Chemistry and Molecular Biosciences, University of Queensland, Brisbane, Australia
| | - Prerna Mudai
- School of Chemistry and Molecular Biosciences, University of Queensland, Brisbane, Australia
| | - Jeffrey D. Nanson
- School of Chemistry and Molecular Biosciences, University of Queensland, Brisbane, Australia
- Australian Infectious Diseases Research Centre, University of Queensland, Brisbane, Australia
- Institute for Molecular Bioscience, University of Queensland, Brisbane, Australia
| | - Xinying Jia
- Centre for Advanced Imaging, University of Queensland, Brisbane, Australia
| | - Parimala R. Vajjhala
- School of Chemistry and Molecular Biosciences, University of Queensland, Brisbane, Australia
| | - Andrew Hedger
- School of Chemistry and Molecular Biosciences, University of Queensland, Brisbane, Australia
- Australian Infectious Diseases Research Centre, University of Queensland, Brisbane, Australia
- Institute for Molecular Bioscience, University of Queensland, Brisbane, Australia
| | - Irina Vetter
- Institute for Molecular Bioscience, University of Queensland, Brisbane, Australia
- School of Pharmacy, University of Queensland, Brisbane, Australia
| | | | - Avril A. B. Robertson
- School of Chemistry and Molecular Biosciences, University of Queensland, Brisbane, Australia
- Institute for Molecular Bioscience, University of Queensland, Brisbane, Australia
| | - Brian Dymock
- Queensland Emory Drug Discovery Initiative, University of Queensland, Brisbane, Australia
| | - Thomas Ve
- Institute for Glycomics, Griffith University, Southport, Australia
| | - Mehdi Mobli
- Centre for Advanced Imaging, University of Queensland, Brisbane, Australia
| | - Katryn J. Stacey
- School of Chemistry and Molecular Biosciences, University of Queensland, Brisbane, Australia
- Australian Infectious Diseases Research Centre, University of Queensland, Brisbane, Australia
| | - Bostjan Kobe
- School of Chemistry and Molecular Biosciences, University of Queensland, Brisbane, Australia
- Australian Infectious Diseases Research Centre, University of Queensland, Brisbane, Australia
- Institute for Molecular Bioscience, University of Queensland, Brisbane, Australia
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2
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Wissemann J, Heidenreich A, Zimmermann H, Engelmann J, Jansen J, Suchanek D, Westermann D, Wolf D, Stachon P, Merz J. ADP as a novel stimulus for NLRP3-inflammasome activation in mice fails to translate to humans. Purinergic Signal 2024; 20:291-302. [PMID: 37410223 PMCID: PMC11189352 DOI: 10.1007/s11302-023-09953-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2023] [Accepted: 06/21/2023] [Indexed: 07/07/2023] Open
Abstract
The NLRP3-inflammasome is a cytosolic multiprotein complex that triggers an inflammatory response to certain danger signals. Recently adenosine diphosphate (ADP) was found to activate the NLRP3-inflammasome in murine macrophages via the P2Y1 receptor. Blockade of this signaling pathway reduced disease severity in a murine colitis-model. However, the role of the ADP/P2Y1-axis has not yet been studied in humans. This present study confirmed ADP-dependent NLRP3-inflammasome activation in murine macrophages, but found no evidence for a role of ADP in inflammasome activation in humans. We investigated the THP1 cell line as well as primary monocytes and further looked at macrophages. Although all cells express the three human ADP-receptors P2Y1, P2Y12 and P2Y13, independent of priming, neither increased ASC-speck formation could be detected with flow cytometry nor additional IL-1β release be found in the culture supernatant of ADP stimulated cells. We now show for the first time that the responsiveness of monocytes and macrophages to ADP as well as the regulation of its purinergic receptors is very much dependent on the species. Therefore the signaling pathway found to contribute to colitis in mice is likely not applicable to humans.
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Affiliation(s)
- Julius Wissemann
- Cardiology and Angiology, Medical Center, University Heart Center Freiburg-Bad Krozingen, University of Freiburg, Freiburg, Germany
| | - Adrian Heidenreich
- Cardiology and Angiology, Medical Center, University Heart Center Freiburg-Bad Krozingen, University of Freiburg, Freiburg, Germany
| | - Helene Zimmermann
- Cardiology and Angiology, Medical Center, University Heart Center Freiburg-Bad Krozingen, University of Freiburg, Freiburg, Germany
| | - Juliane Engelmann
- Cardiology and Angiology, Medical Center, University Heart Center Freiburg-Bad Krozingen, University of Freiburg, Freiburg, Germany
| | - Jasper Jansen
- Cardiology and Angiology, Medical Center, University Heart Center Freiburg-Bad Krozingen, University of Freiburg, Freiburg, Germany
| | - Dymphie Suchanek
- Cardiology and Angiology, Medical Center, University Heart Center Freiburg-Bad Krozingen, University of Freiburg, Freiburg, Germany
| | - Dirk Westermann
- Cardiology and Angiology, Medical Center, University Heart Center Freiburg-Bad Krozingen, University of Freiburg, Freiburg, Germany
| | - Dennis Wolf
- Cardiology and Angiology, Medical Center, University Heart Center Freiburg-Bad Krozingen, University of Freiburg, Freiburg, Germany
| | - Peter Stachon
- Cardiology and Angiology, Medical Center, University Heart Center Freiburg-Bad Krozingen, University of Freiburg, Freiburg, Germany
| | - Julian Merz
- Cardiology and Angiology, Medical Center, University Heart Center Freiburg-Bad Krozingen, University of Freiburg, Freiburg, Germany.
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3
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Holley CL, Emming S, Monteleone MM, Mellacheruvu M, Kenney KM, Lawrence GMEP, Coombs JR, Burgener SS, Schroder K. The septin modifier, forchlorfenuron, activates NLRP3 via a potassium-independent mitochondrial axis. Cell Chem Biol 2024; 31:962-972.e4. [PMID: 38759620 DOI: 10.1016/j.chembiol.2024.04.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2023] [Revised: 04/07/2024] [Accepted: 04/19/2024] [Indexed: 05/19/2024]
Abstract
The Nod-like receptor protein 3 (NLRP3) inflammasome is activated by stimuli that induce perturbations in cell homeostasis, which commonly converge on cellular potassium efflux. NLRP3 has thus emerged as a sensor for ionic flux. Here, we identify forchlorfenuron (FCF) as an inflammasome activator that triggers NLRP3 signaling independently of potassium efflux. FCF triggers the rearrangement of septins, key cytoskeletal proteins that regulate mitochondrial function. We report that FCF triggered the rearrangement of SEPT2 into tubular aggregates and stimulated SEPT2-independent NLRP3 inflammasome signaling. Similar to imiquimod, FCF induced the collapse of the mitochondrial membrane potential and mitochondrial respiration. FCF thereby joins the imidazoquinolines as a structurally distinct class of molecules that triggers NLRP3 inflammasome signaling independent of potassium efflux, likely by inducing mitochondrial damage.
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Affiliation(s)
- Caroline L Holley
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD 4072, Australia.
| | - Stefan Emming
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD 4072, Australia
| | - Mercedes M Monteleone
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD 4072, Australia
| | - Manasa Mellacheruvu
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD 4072, Australia
| | - Kirsten M Kenney
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD 4072, Australia
| | - Grace M E P Lawrence
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD 4072, Australia
| | - Jared R Coombs
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD 4072, Australia
| | - Sabrina S Burgener
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD 4072, Australia
| | - Kate Schroder
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD 4072, Australia.
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4
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Behrendt I, Röder I, Will F, Michel G, Friedrich E, Grote D, Martin Z, Dötzer HP, Fasshauer M, Speckmann M, Kuntz S. Grape/Blueberry Anthocyanins and Their Gut-Derived Metabolites Attenuate LPS/Nigericin-Induced Inflammasome Activation by Inhibiting ASC Speck Formation in THP-1 Monocytes. Metabolites 2024; 14:203. [PMID: 38668331 PMCID: PMC11051782 DOI: 10.3390/metabo14040203] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/29/2024] [Revised: 03/28/2024] [Accepted: 03/28/2024] [Indexed: 04/28/2024] Open
Abstract
Inflammasomes are multi-protein complexes, which are formed in response to tissue injury, infections, and metabolic stress. However, aberrant inflammasome activation has been linked to several inflammatory diseases. Anthocyanins have been reported to attenuate NLR family pyrin domain-containing 3 (NLRP3) inflammasome activation, but the influence of grape/blueberry anthocyanins and especially their gut-derived metabolites on NLRP3 inflammasome activation in human monocytes remains unclear. Therefore, human leukemic monocytes (THP-1 cells, Tohoku Hospital Pediatrics-1 cells) were preincubated with different concentrations of grape/blueberry anthocyanins, homovanillyl alcohol, or 2,4,6-trihydroxybenzaldehyde (THBA) before the NLRP3 inflammasome was activated by lipopolysaccharide and/or nigericin. Apoptosis-associated speck-like protein containing a CARD (ASC) speck formation, as well as ASC and NLRP3 protein expression, were determined using flow cytometry. Caspase-1 activity was measured in cultured cells, and pro-inflammatory cytokine secretion was determined using enzyme-linked immunosorbent assays. Anthocyanins and their metabolites had no effect on ASC or NLRP3 protein expression. However, THBA significantly inhibited ASC speck formation in primed and unprimed THP-1 monocytes, while caspase-1 activity was significantly declined by grape/blueberry anthocyanins. Furthermore, reduced inflammasome activation resulted in lower pro-inflammatory cytokine secretion. In conclusion, our results show for the first time that grape/blueberry anthocyanins and their gut-derived metabolites exert anti-inflammatory effects by attenuating NLRP3 inflammasome activation in THP-1 monocytes.
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Affiliation(s)
- Inken Behrendt
- Institute of Nutritional Science, Justus-Liebig-University Giessen, 35390 Giessen, Germany; (E.F.); (D.G.); (Z.M.); (H.P.D.); (M.F.); (S.K.)
| | - Isabella Röder
- Department of Beverage Research, Hochschule Geisenheim University, 65366 Geisenheim, Germany; (I.R.); (F.W.)
| | - Frank Will
- Department of Beverage Research, Hochschule Geisenheim University, 65366 Geisenheim, Germany; (I.R.); (F.W.)
| | - Gabriela Michel
- Institute for Clinical Immunology, Transfusion Medicine and Hemostaseology, Justus-Liebig-University Giessen, 35392 Giessen, Germany; (G.M.); (M.S.)
- Flow Cytometry Core Facility, Department of Medicine, Justus-Liebig-University Giessen, 35392 Giessen, Germany
| | - Elvira Friedrich
- Institute of Nutritional Science, Justus-Liebig-University Giessen, 35390 Giessen, Germany; (E.F.); (D.G.); (Z.M.); (H.P.D.); (M.F.); (S.K.)
| | - Daniela Grote
- Institute of Nutritional Science, Justus-Liebig-University Giessen, 35390 Giessen, Germany; (E.F.); (D.G.); (Z.M.); (H.P.D.); (M.F.); (S.K.)
| | - Zoe Martin
- Institute of Nutritional Science, Justus-Liebig-University Giessen, 35390 Giessen, Germany; (E.F.); (D.G.); (Z.M.); (H.P.D.); (M.F.); (S.K.)
| | - Hanna Pauline Dötzer
- Institute of Nutritional Science, Justus-Liebig-University Giessen, 35390 Giessen, Germany; (E.F.); (D.G.); (Z.M.); (H.P.D.); (M.F.); (S.K.)
| | - Mathias Fasshauer
- Institute of Nutritional Science, Justus-Liebig-University Giessen, 35390 Giessen, Germany; (E.F.); (D.G.); (Z.M.); (H.P.D.); (M.F.); (S.K.)
| | - Martin Speckmann
- Institute for Clinical Immunology, Transfusion Medicine and Hemostaseology, Justus-Liebig-University Giessen, 35392 Giessen, Germany; (G.M.); (M.S.)
- Flow Cytometry Core Facility, Department of Medicine, Justus-Liebig-University Giessen, 35392 Giessen, Germany
| | - Sabine Kuntz
- Institute of Nutritional Science, Justus-Liebig-University Giessen, 35390 Giessen, Germany; (E.F.); (D.G.); (Z.M.); (H.P.D.); (M.F.); (S.K.)
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5
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Molina-López C, Hurtado-Navarro L, García CJ, Angosto-Bazarra D, Vallejo F, Tapia-Abellán A, Marques-Soares JR, Vargas C, Bujan-Rivas S, Tomás-Barberán FA, Arostegui JI, Pelegrin P. Pathogenic NLRP3 mutants form constitutively active inflammasomes resulting in immune-metabolic limitation of IL-1β production. Nat Commun 2024; 15:1096. [PMID: 38321014 PMCID: PMC10847128 DOI: 10.1038/s41467-024-44990-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2023] [Accepted: 01/11/2024] [Indexed: 02/08/2024] Open
Abstract
Cryopyrin-associated periodic syndrome (CAPS) is an autoinflammatory condition resulting from monoallelic NLRP3 variants that facilitate IL-1β production. Although these are gain-of-function variants characterized by hypersensitivity to cell priming, patients with CAPS and animal models of the disease may present inflammatory flares without identifiable external triggers. Here we find that CAPS-associated NLRP3 variants are forming constitutively active inflammasome, which induce increased basal cleavage of gasdermin D, IL-18 release and pyroptosis, with a concurrent basal pro-inflammatory gene expression signature, including the induction of nuclear receptors 4 A. The constitutively active NLRP3-inflammasome of CAPS is responsive to the selective NLRP3 inhibitor MCC950 and its activation is regulated by deubiquitination. Despite their preactivated state, the CAPS inflammasomes are responsive to activation of the NF-κB pathway. NLRP3-inflammasomes with CAPS-associated variants affect the immunometabolism of the myeloid compartment, leading to disruptions in lipids and amino acid pathways and impaired glycolysis, limiting IL-1β production. In summary, NLRP3 variants causing CAPS form a constitutively active inflammasome inducing pyroptosis and IL-18 release without cell priming, which enables the host's innate defence against pathogens while also limiting IL-1β-dependent inflammatory episodes through immunometabolism modulation.
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Affiliation(s)
- Cristina Molina-López
- Molecular Inflammation Group, Instituto Murciano de Investigación Biosanitaria Pascual Parrilla-IMIB, Murcia, Spain
| | - Laura Hurtado-Navarro
- Molecular Inflammation Group, Instituto Murciano de Investigación Biosanitaria Pascual Parrilla-IMIB, Murcia, Spain
| | - Carlos J García
- Quality, Safety and Bioactivity of Plant-Derived Foods, Centro de Edafología y Biología Aplicada del Segura-Consejo Superior de Investigaciones Científicas (CEBAS-CSIC), Murcia, Spain
| | - Diego Angosto-Bazarra
- Molecular Inflammation Group, Instituto Murciano de Investigación Biosanitaria Pascual Parrilla-IMIB, Murcia, Spain
| | - Fernando Vallejo
- Quality, Safety and Bioactivity of Plant-Derived Foods, Centro de Edafología y Biología Aplicada del Segura-Consejo Superior de Investigaciones Científicas (CEBAS-CSIC), Murcia, Spain
| | - Ana Tapia-Abellán
- Molecular Inflammation Group, Instituto Murciano de Investigación Biosanitaria Pascual Parrilla-IMIB, Murcia, Spain
- Interfaculty Institute for Cell Biology, Department of Immunology, University of Tübingen, Auf der Morgenstelle 15, 72076, Tübingen, Germany
| | | | - Carmen Vargas
- Department of Rheumatology, Hospital Virgen de la Macarena, Sevilla, Spain
| | | | - Francisco A Tomás-Barberán
- Quality, Safety and Bioactivity of Plant-Derived Foods, Centro de Edafología y Biología Aplicada del Segura-Consejo Superior de Investigaciones Científicas (CEBAS-CSIC), Murcia, Spain
| | - Juan I Arostegui
- Department of Immunology, Hospital Clínic, Barcelona, Spain
- Institut d'Investigacions Biomèdiques August Pi i Sunyer, Barcelona, Spain
- School of Medicine, Universitat de Barcelona, Barcelona, Spain
| | - Pablo Pelegrin
- Molecular Inflammation Group, Instituto Murciano de Investigación Biosanitaria Pascual Parrilla-IMIB, Murcia, Spain.
- Department of Biochemistry and Molecular Biology B and Immunology, Faculty of Medicine, University of Murcia, 30120, Murcia, Spain.
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6
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Deng Y, Ostermann E, Brune W. A cytomegalovirus inflammasome inhibitor reduces proinflammatory cytokine release and pyroptosis. Nat Commun 2024; 15:786. [PMID: 38278864 PMCID: PMC10817922 DOI: 10.1038/s41467-024-45151-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2023] [Accepted: 01/17/2024] [Indexed: 01/28/2024] Open
Abstract
In response to viral infection, cells can initiate programmed cell death (PCD), leading to a reduction in the release of viral progeny. Viruses have therefore evolved specific mechanisms to curb PCD. Cytomegaloviruses (CMVs) are sophisticated manipulators of cellular defenses and encode potent inhibitors of apoptosis and necroptosis. However, a CMV inhibitor of pyroptosis has not been clearly identified and characterized. Here we identify the mouse cytomegalovirus M84 protein as an inhibitor of pyroptosis and proinflammatory cytokine release. M84 interacts with the pyrin domain of AIM2 and ASC to inhibit inflammasome assembly. It thereby prevents Caspase-1-mediated activation of interleukin 1β (IL-1β), IL-18, and Gasdermin D. Growth attenuation of an M84-deficient MCMV in macrophages is rescued by knockout of either Aim2 or Asc or by treatment with a Caspase-1 inhibitor, and its attenuation in infected mice is partially rescued in Asc knockout mice. Thus, viral inhibition of the inflammasome-pyroptosis pathway is important to promote viral replication in vivo.
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Affiliation(s)
- Yingqi Deng
- Leibniz Institute of Virology (LIV), Hamburg, Germany
| | | | - Wolfram Brune
- Leibniz Institute of Virology (LIV), Hamburg, Germany.
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7
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Coombs JR, Zamoshnikova A, Holley CL, Maddugoda MP, Teo DET, Chauvin C, Poulin LF, Vitak N, Ross CM, Mellacheruvu M, Coll RC, Heinz LX, Burgener SS, Emming S, Chamaillard M, Boucher D, Schroder K. NLRP12 interacts with NLRP3 to block the activation of the human NLRP3 inflammasome. Sci Signal 2024; 17:eabg8145. [PMID: 38261657 DOI: 10.1126/scisignal.abg8145] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2021] [Accepted: 01/04/2024] [Indexed: 01/25/2024]
Abstract
Inflammasomes are multiprotein complexes that drive inflammation and contribute to protective immunity against pathogens and immune pathology in autoinflammatory diseases. Inflammasomes assemble when an inflammasome scaffold protein senses an activating signal and forms a signaling platform with the inflammasome adaptor protein ASC. The NLRP subfamily of NOD-like receptors (NLRs) includes inflammasome nucleators (such as NLRP3) and also NLRP12, which is genetically linked to familial autoinflammatory disorders that resemble diseases caused by gain-of-function NLRP3 mutants that generate a hyperactive NLRP3 inflammasome. We performed a screen to identify ASC inflammasome-nucleating proteins among NLRs that have the canonical pyrin-NACHT-LRR domain structure. Only NLRP3 and NLRP6 could initiate ASC polymerization to form "specks," and NLRP12 failed to nucleate ASC polymerization. However, wild-type NLRP12 inhibited ASC inflammasome assembly induced by wild-type and gain-of-function mutant NLRP3, an effect not seen with disease-associated NLRP12 mutants. The capacity of NLRP12 to suppress NLRP3 inflammasome assembly was limited to human NLRP3 and was not observed for wild-type murine NLRP3. Furthermore, peripheral blood mononuclear cells from patients with an NLRP12 mutant-associated inflammatory disorder produced increased amounts of the inflammatory cytokine IL-1β in response to NLRP3 stimulation. Thus, our findings provide insights into NLRP12 biology and suggest that NLRP3 inhibitors in clinical trials for NLRP3-driven diseases may also be effective in treating NLRP12-associated autoinflammatory diseases.
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Affiliation(s)
- Jared R Coombs
- Institute for Molecular Bioscience, University of Queensland, St Lucia 4072, Australia
| | - Alina Zamoshnikova
- Institute for Molecular Bioscience, University of Queensland, St Lucia 4072, Australia
| | - Caroline L Holley
- Institute for Molecular Bioscience, University of Queensland, St Lucia 4072, Australia
| | - Madhavi P Maddugoda
- Institute for Molecular Bioscience, University of Queensland, St Lucia 4072, Australia
| | - Daniel Eng Thiam Teo
- Institute for Molecular Bioscience, University of Queensland, St Lucia 4072, Australia
| | - Camille Chauvin
- U1019, Institut Pasteur de Lille, University of Lille, Centre National de la Recherche Scientifique, INSERM, Centre Hospitalo-Universitaire Lille, Lille 59019, France
| | - Lionel F Poulin
- Laboratory of Cell Physiology, INSERM U1003, University of Lille, Lille 59000, France
| | - Nazarii Vitak
- School of Chemistry and Molecular Biosciences, University of Queensland, St Lucia 4072, Australia
| | - Connie M Ross
- Institute for Molecular Bioscience, University of Queensland, St Lucia 4072, Australia
- School of Chemistry and Molecular Biosciences, University of Queensland, St Lucia 4072, Australia
| | - Manasa Mellacheruvu
- Institute for Molecular Bioscience, University of Queensland, St Lucia 4072, Australia
| | - Rebecca C Coll
- Institute for Molecular Bioscience, University of Queensland, St Lucia 4072, Australia
| | - Leonhard X Heinz
- Institute for Molecular Bioscience, University of Queensland, St Lucia 4072, Australia
| | - Sabrina S Burgener
- Institute for Molecular Bioscience, University of Queensland, St Lucia 4072, Australia
| | - Stefan Emming
- Institute for Molecular Bioscience, University of Queensland, St Lucia 4072, Australia
| | - Mathias Chamaillard
- U1019, Institut Pasteur de Lille, University of Lille, Centre National de la Recherche Scientifique, INSERM, Centre Hospitalo-Universitaire Lille, Lille 59019, France
| | - Dave Boucher
- Institute for Molecular Bioscience, University of Queensland, St Lucia 4072, Australia
| | - Kate Schroder
- Institute for Molecular Bioscience, University of Queensland, St Lucia 4072, Australia
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8
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Hurtado-Navarro L, Cuenca-Zamora EJ, Zamora L, Bellosillo B, Such E, Soler-Espejo E, Martínez-Banaclocha H, Hernández-Rivas JM, Marco-Ayala J, Martínez-Alarcón L, Linares-Latorre L, García-Ávila S, Amat-Martínez P, González T, Arnan M, Pomares-Marín H, Carreño-Tarragona G, Chen-Liang TH, Herranz MT, García-Palenciano C, Morales ML, Jerez A, Lozano ML, Teruel-Montoya R, Pelegrín P, Ferrer-Marín F. NLRP3 inflammasome activation and symptom burden in KRAS-mutated CMML patients is reverted by IL-1 blocking therapy. Cell Rep Med 2023; 4:101329. [PMID: 38118408 PMCID: PMC10772462 DOI: 10.1016/j.xcrm.2023.101329] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2023] [Revised: 09/21/2023] [Accepted: 11/17/2023] [Indexed: 12/22/2023]
Abstract
Chronic myelomonocytic leukemia (CMML) is frequently associated with mutations in the rat sarcoma gene (RAS), leading to worse prognosis. RAS mutations result in active RAS-GTP proteins, favoring myeloid cell proliferation and survival and inducing the NLRP3 inflammasome together with the apoptosis-associated speck-like protein containing a caspase recruitment domain (ASC), which promote caspase-1 activation and interleukin (IL)-1β release. Here, we report, in a cohort of CMML patients with mutations in KRAS, a constitutive activation of the NLRP3 inflammasome in monocytes, evidenced by ASC oligomerization and IL-1β release, as well as a specific inflammatory cytokine signature. Treatment of a CMML patient with a KRASG12D mutation using the IL-1 receptor blocker anakinra inhibits NLRP3 inflammasome activation, reduces monocyte count, and improves the patient's clinical status, enabling a stem cell transplant. This reveals a basal inflammasome activation in RAS-mutated CMML patients and suggests potential therapeutic applications of NLRP3 and IL-1 blockers.
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Affiliation(s)
| | - Ernesto José Cuenca-Zamora
- Biomedical Research Institute of Murcia (IMIB-Pascual Parrilla), Murcia, Spain; Hematology Department, Hospital Universitario Morales-Meseguer, Centro Regional de Hemodonación, Murcia, Spain; CIBERER CB15/00055 (U765), Murcia, Spain
| | - Lurdes Zamora
- Myeloid Neoplasms Group, Josep Carreras Leukaemia Research Institute, ICO-Hospital Germans Trias I Pujol, Universitat Autònoma de Barcelona, Badalona, Spain
| | - Beatriz Bellosillo
- Molecular Biology Laboratory, Pathology Department, Hospital Del Mar, Hospital Del Mar Medical Research Institute, IMIM, Barcelona, Spain
| | - Esperanza Such
- Hematology Department, La Fe University Hospital, Valencia, Spain
| | - Eva Soler-Espejo
- Hematology Department, Hospital Universitario Morales-Meseguer, Centro Regional de Hemodonación, Murcia, Spain
| | - Helios Martínez-Banaclocha
- Biomedical Research Institute of Murcia (IMIB-Pascual Parrilla), Murcia, Spain; Immunology Service, Hospital Universitario Virgen de La Arrixaca, Murcia, Spain
| | - Jesús M Hernández-Rivas
- Department of Medicine, Universidad de Salamanca, Servicio de Hematología, Hospital Universitario de Salamanca, IBSAL, Salamanca, Spain
| | - Javier Marco-Ayala
- Hematology Department, Hospital Universitario Morales-Meseguer, Centro Regional de Hemodonación, Murcia, Spain
| | | | - Lola Linares-Latorre
- Service of Clinical Analysis and Microbiology, Fundación Instituto Valenciano de Oncología, Valencia, Spain
| | - Sara García-Ávila
- Department of Hematology, Hospital Del Mar, Barcelona, Spain; IMIM (Hospital Del Mar Medical Research Institute), Barcelona, Spain
| | - Paula Amat-Martínez
- Hematology Service, Clinic University Hospital, INCLIVA Health Research Institute, Valencia, Spain
| | - Teresa González
- Department of Medicine, Universidad de Salamanca, Servicio de Hematología, Hospital Universitario de Salamanca, IBSAL, Salamanca, Spain
| | - Montserrat Arnan
- Hematology Department, Institut Català D'Oncologia (ICO)-Hospital Duran I Reynals, IDIBELL, Barcelona, Spain
| | - Helena Pomares-Marín
- Hematology Department, Institut Català D'Oncologia (ICO)-Hospital Duran I Reynals, IDIBELL, Barcelona, Spain
| | | | - Tzu Hua Chen-Liang
- Hematology Department, Hospital Universitario Morales-Meseguer, Centro Regional de Hemodonación, Murcia, Spain
| | - María T Herranz
- Internal Medicine Service, Hospital Universitario Morales Meseguer, Murcia, Spain
| | - Carlos García-Palenciano
- Biomedical Research Institute of Murcia (IMIB-Pascual Parrilla), Murcia, Spain; Servicio de Anestesiología y Reanimación, Hospital Clínico Universitario Virgen de La Arrixaca, Murcia, Spain
| | - María Luz Morales
- Biomedical Research Institute of Murcia (IMIB-Pascual Parrilla), Murcia, Spain; Hematology Department, Hospital Universitario Morales-Meseguer, Centro Regional de Hemodonación, Murcia, Spain
| | - Andrés Jerez
- Biomedical Research Institute of Murcia (IMIB-Pascual Parrilla), Murcia, Spain; Hematology Department, Hospital Universitario Morales-Meseguer, Centro Regional de Hemodonación, Murcia, Spain; CIBERER CB15/00055 (U765), Murcia, Spain
| | - María L Lozano
- Biomedical Research Institute of Murcia (IMIB-Pascual Parrilla), Murcia, Spain; Hematology Department, Hospital Universitario Morales-Meseguer, Centro Regional de Hemodonación, Murcia, Spain; CIBERER CB15/00055 (U765), Murcia, Spain
| | - Raúl Teruel-Montoya
- Biomedical Research Institute of Murcia (IMIB-Pascual Parrilla), Murcia, Spain; Hematology Department, Hospital Universitario Morales-Meseguer, Centro Regional de Hemodonación, Murcia, Spain; CIBERER CB15/00055 (U765), Murcia, Spain; Universidad Católica San Antonio (UCAM), Murcia, Spain
| | - Pablo Pelegrín
- Biomedical Research Institute of Murcia (IMIB-Pascual Parrilla), Murcia, Spain; Department of Biochemistry and Molecular Biology B and Immunology, University of Murcia, Murcia, Spain.
| | - Francisca Ferrer-Marín
- Biomedical Research Institute of Murcia (IMIB-Pascual Parrilla), Murcia, Spain; Hematology Department, Hospital Universitario Morales-Meseguer, Centro Regional de Hemodonación, Murcia, Spain; CIBERER CB15/00055 (U765), Murcia, Spain; Universidad Católica San Antonio (UCAM), Murcia, Spain.
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9
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Baldrighi M, Doreth C, Li Y, Zhao X, Warner E, Chenoweth H, Kishore K, Umrania Y, Minde DP, Thome S, Yu X, Lu Y, Knapton A, Harrison J, Clarke M, Latz E, de Cárcer G, Malumbres M, Ryffel B, Bryant C, Liu J, Lilley KS, Mallat Z, Li X. PLK1 inhibition dampens NLRP3 inflammasome-elicited response in inflammatory disease models. J Clin Invest 2023; 133:e162129. [PMID: 37698938 PMCID: PMC10617773 DOI: 10.1172/jci162129] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2022] [Accepted: 09/06/2023] [Indexed: 09/14/2023] Open
Abstract
Unabated activation of the NLR family pyrin domain-containing 3 (NLRP3) inflammasome is linked with the pathogenesis of various inflammatory disorders. Polo-like kinase 1 (PLK1) has been widely studied for its role in mitosis. Here, using both pharmacological and genetic approaches, we demonstrate that PLK1 promoted NLRP3 inflammasome activation at cell interphase. Using an unbiased proximity-dependent biotin identification (Bio-ID) screen for the PLK1 interactome in macrophages, we show an enhanced proximal association of NLRP3 with PLK1 upon NLRP3 inflammasome activation. We further confirmed the interaction between PLK1 and NLRP3 and identified the interacting domains. Mechanistically, we show that PLK1 orchestrated the microtubule-organizing center (MTOC) structure and NLRP3 subcellular positioning upon inflammasome activation. Treatment with a selective PLK1 kinase inhibitor suppressed IL-1β production in in vivo inflammatory models, including LPS-induced endotoxemia and monosodium urate-induced peritonitis in mice. Our results uncover a role of PLK1 in regulating NLRP3 inflammasome activation during interphase and identify pharmacological inhibition of PLK1 as a potential therapeutic strategy for inflammatory diseases with excessive NLRP3 inflammasome activation.
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Affiliation(s)
- Marta Baldrighi
- The Victor Phillip Dahdaleh Heart and Lung Research Institute, Department of Medicine, University of Cambridge, Cambridge, United Kingdom
| | - Christian Doreth
- The Victor Phillip Dahdaleh Heart and Lung Research Institute, Department of Medicine, University of Cambridge, Cambridge, United Kingdom
| | - Yang Li
- Department of Cardiovascular Surgery, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Xiaohui Zhao
- The Victor Phillip Dahdaleh Heart and Lung Research Institute, Department of Medicine, University of Cambridge, Cambridge, United Kingdom
| | - Emily Warner
- The Victor Phillip Dahdaleh Heart and Lung Research Institute, Department of Medicine, University of Cambridge, Cambridge, United Kingdom
| | - Hannah Chenoweth
- The Victor Phillip Dahdaleh Heart and Lung Research Institute, Department of Medicine, University of Cambridge, Cambridge, United Kingdom
| | | | - Yagnesh Umrania
- Department of Biochemistry, Cambridge Centre for Proteomics, University of Cambridge, Cambridge, United Kingdom
| | - David-Paul Minde
- Department of Biochemistry, Cambridge Centre for Proteomics, University of Cambridge, Cambridge, United Kingdom
| | - Sarah Thome
- The Victor Phillip Dahdaleh Heart and Lung Research Institute, Department of Medicine, University of Cambridge, Cambridge, United Kingdom
| | - Xian Yu
- The Victor Phillip Dahdaleh Heart and Lung Research Institute, Department of Medicine, University of Cambridge, Cambridge, United Kingdom
| | - Yuning Lu
- The Victor Phillip Dahdaleh Heart and Lung Research Institute, Department of Medicine, University of Cambridge, Cambridge, United Kingdom
| | - Alice Knapton
- The Victor Phillip Dahdaleh Heart and Lung Research Institute, Department of Medicine, University of Cambridge, Cambridge, United Kingdom
| | - James Harrison
- The Victor Phillip Dahdaleh Heart and Lung Research Institute, Department of Medicine, University of Cambridge, Cambridge, United Kingdom
| | - Murray Clarke
- The Victor Phillip Dahdaleh Heart and Lung Research Institute, Department of Medicine, University of Cambridge, Cambridge, United Kingdom
| | - Eicke Latz
- Institute of Innate Immunity, University Hospital, University of Bonn, Bonn, Germany
| | - Guillermo de Cárcer
- Cell Division and Cancer Group, Spanish National Cancer Research Centre (CNIO), Madrid, Spain
- Cell Cycle and Cancer Biomarkers Group, “Alberto Sols” Biomedical Research Institute (IIBM-CSIC), Madrid, Spain
| | - Marcos Malumbres
- Cell Division and Cancer Group, Spanish National Cancer Research Centre (CNIO), Madrid, Spain
| | - Bernhard Ryffel
- UMR7355 INEM, Experimental and Molecular Immunology and Neurogenetics CNRS and Université d’Orleans, Orleans, France
| | - Clare Bryant
- Department of Veterinary Medicine, University of Cambridge, Cambridge, United Kingdom
| | - Jinping Liu
- Department of Cardiovascular Surgery, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Kathryn S. Lilley
- Department of Biochemistry, Cambridge Centre for Proteomics, University of Cambridge, Cambridge, United Kingdom
| | - Ziad Mallat
- The Victor Phillip Dahdaleh Heart and Lung Research Institute, Department of Medicine, University of Cambridge, Cambridge, United Kingdom
- Université Paris Cité, PARCC, INSERM, Paris, France
| | - Xuan Li
- The Victor Phillip Dahdaleh Heart and Lung Research Institute, Department of Medicine, University of Cambridge, Cambridge, United Kingdom
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10
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Nagar A, Bharadwaj R, Shaikh MOF, Roy A. What are NLRP3-ASC specks? an experimental progress of 22 years of inflammasome research. Front Immunol 2023; 14:1188864. [PMID: 37564644 PMCID: PMC10411722 DOI: 10.3389/fimmu.2023.1188864] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2023] [Accepted: 07/12/2023] [Indexed: 08/12/2023] Open
Abstract
Speck assembly is the hallmark of NLRP3 inflammasome activation. The 1µm structure comprising of NLRP3 and ASC is the first observable phenotype of NLRP3 activation. While the common consensus is that the specks are the site of inflammasome activity, no direct experimental evidence exists to support this notion. In these 22 years, since the inflammasome discovery, several research studies have been published which directly or indirectly support or refute the idea of speck being the inflammasome. This review compiles the data from two decades of research to answer a long-standing question: "What are NLRP3-ASC specks?"
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Affiliation(s)
- Abhinit Nagar
- Department of Flow Cytometry, Cytek Biosciences, Fremont, CA, United States
| | - Ravi Bharadwaj
- MassBiologics of the University of Massachusetts Medical School, Boston, MA, United States
| | - Mohammad Omar Faruk Shaikh
- Division of Critical Care Medicine, Department of Anesthesiology, Critical Care and Pain Medicine, Boston Children’s Hospital, Boston, MA, United States
- Department of Anesthesia, Harvard Medical School, Boston, MA, United States
| | - Abhishek Roy
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, MN, United States
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11
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Franklin ME, Bennett C, Arboite M, Alvarez-Ciara A, Corrales N, Verdelus J, Dietrich WD, Keane RW, de Rivero Vaccari JP, Prasad A. Activation of inflammasomes and their effects on neuroinflammation at the microelectrode-tissue interface in intracortical implants. Biomaterials 2023; 297:122102. [PMID: 37015177 PMCID: PMC10614166 DOI: 10.1016/j.biomaterials.2023.122102] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2022] [Revised: 03/16/2023] [Accepted: 03/23/2023] [Indexed: 03/30/2023]
Abstract
Invasive neuroprosthetics rely on microelectrodes (MEs) to record or stimulate the activity of large neuron assemblies. However, MEs are subjected to tissue reactivity in the central nervous system (CNS) due to the foreign body response (FBR) that contribute to chronic neuroinflammation and ultimately result in ME failure. An endogenous, acute set of mechanisms responsible for the recognition and targeting of foreign objects, called the innate immune response, immediately follows the ME implant-induced trauma. Inflammasomes are multiprotein structures that play a critical role in the initiation of an innate immune response following CNS injuries. The activation of inflammasomes facilitates a range of innate immune response cascades and results in neuroinflammation and programmed cell death. Despite our current understanding of inflammasomes, their roles in the context of neural device implantation remain unknown. In this study, we implanted a non-functional Utah electrode array (UEA) into the rat somatosensory cortex and studied the inflammasome signaling and the corresponding downstream effects on inflammatory cytokine expression and the inflammasome-mediated cell death mechanism of pyroptosis. Our results not only demonstrate the continuous activation of inflammasomes and their contribution to neuroinflammation at the electrode-tissue interface but also reveal the therapeutic potential of targeting inflammasomes to attenuate the FBR in invasive neuroprosthetics.
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Affiliation(s)
- Melissa E Franklin
- Department of Biomedical Engineering, University of Miami, Miami, FL, USA
| | - Cassie Bennett
- Department of Biomedical Engineering, University of Miami, Miami, FL, USA
| | - Maelle Arboite
- Department of Biomedical Engineering, University of Miami, Miami, FL, USA
| | | | - Natalie Corrales
- Department of Biomedical Engineering, University of Miami, Miami, FL, USA
| | - Jennifer Verdelus
- Department of Biomedical Engineering, University of Miami, Miami, FL, USA
| | - W Dalton Dietrich
- Department of Biomedical Engineering, University of Miami, Miami, FL, USA; Department of Neurological Surgery, University of Miami Miller School of Medicine, Miami, FL, USA; The Miami Project to Cure Paralysis, University of Miami, Miami, FL, USA
| | - Robert W Keane
- The Miami Project to Cure Paralysis, University of Miami, Miami, FL, USA; Department of Physiology and Biophysics, University of Miami Miller School of Medicine, Miami, FL, USA; Center for Cognitive Neuroscience and Aging University of Miami Miller School of Medicine, Miami, FL, USA
| | - Juan Pablo de Rivero Vaccari
- The Miami Project to Cure Paralysis, University of Miami, Miami, FL, USA; Department of Physiology and Biophysics, University of Miami Miller School of Medicine, Miami, FL, USA; Center for Cognitive Neuroscience and Aging University of Miami Miller School of Medicine, Miami, FL, USA
| | - Abhishek Prasad
- Department of Biomedical Engineering, University of Miami, Miami, FL, USA; The Miami Project to Cure Paralysis, University of Miami, Miami, FL, USA.
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12
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Malhotra S, Hurtado-Navarro L, Pappolla A, Villar LMM, Río J, Montalban X, Pelegrin P, Comabella M. Increased NLRP3 Inflammasome Activation and Pyroptosis in Patients With Multiple Sclerosis With Fingolimod Treatment Failure. NEUROLOGY(R) NEUROIMMUNOLOGY & NEUROINFLAMMATION 2023; 10:10/3/e200100. [PMID: 36973075 PMCID: PMC10042441 DOI: 10.1212/nxi.0000000000200100] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/23/2022] [Accepted: 01/12/2023] [Indexed: 03/29/2023]
Abstract
BACKGROUND AND OBJECTIVES Inflammasomes are involved in the pathogenesis of different neuroimmune and neurodegenerative diseases, including multiple sclerosis (MS). In a previous study by our group, the nucleotide-binding oligomerization domain, leucine-rich repeat receptor and pyrin-domain-containing 3 (NLRP3) inflammasome was reported to be associated with the response to interferon-beta in MS. Based on recent data showing the potential for the oral therapy fingolimod to inhibit NLRP3 inflammasome activation, here we investigated whether fingolimod could also be implicated in the response to this therapy in patients with MS. METHODS NLRP3 gene expression levels were measured by real-time PCR in peripheral blood mononuclear cells at baseline and after 3, 6, and 12 months in a cohort of patients with MS treated with fingolimod (N = 23), dimethyl fumarate (N = 21), and teriflunomide (N = 21) and classified into responders and nonresponders to the treatment according to clinical and radiologic criteria. In a subgroup of fingolimod responders and nonresponders, the percentage of monocytes with an oligomer of ASC was determined by flow cytometry, and the levels of interleukin (IL)-1β, IL-18, IL-6, tumor necrosis factor (TNF)α, and galectin-3 were quantified by ELISA. RESULTS NLPR3 expression levels were significantly increased in fingolimod nonresponders after 3 (p = 0.03) and 6 months (p = 0.008) of treatment compared with the baseline but remained similar in responders at all time points. These changes were not observed in nonresponders to the other oral therapies tested. The formation of an oligomer of ASC in monocytes after lipopolysaccharide and adenosine 5'-triphosphate stimulation was significantly decreased in responders (p = 0.006) but increased in nonresponders (p = 0.0003) after 6 months of fingolimod treatment compared with the baseline. Proinflammatory cytokine release from stimulated peripheral blood mononuclear cells was comparable between responders and nonresponders, but galectin-3 levels on cell supernatants, as a marker of cell damage, were significantly increased in fingolimod nonresponders (p = 0.02). DISCUSSION The differential effect of fingolimod on the formation of an inflammasome-triggered ASC oligomer in monocytes between responders and nonresponders could be used as a response biomarker after 6 months of fingolimod treatment and suggests that fingolimod may exert their beneficial effects by reducing inflammasome signaling in a subset of patients with MS.
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Affiliation(s)
- Sunny Malhotra
- From the Servei de Neurologia-Neuroimmunologia (S.M., A.P., J.R., X.M., M.C.), Centre d´Esclerosi Múltiple de Catalunya (Cemcat), Institut de Recerca Vall d´Hebron (VHIR), Hospital Universitari Vall d´Hebron, Universitat Autònoma de Barcelona, Spain; Biomedical Research Institute of Murcia (IMIB-Arrixaca) (L.H.-N., P.P.), University Clinical Hospital Virgen de la Arrixaca, Spain; Departments of Neurology and Immunology (L.M.M.V.), Hospital Universitario Ramón y Cajal, Instituto Ramón y Cajal de Investigacion Sanitaria, Madrid, Spain; and Department of Biochemistry and Molecular Biology B and Immunology (P.P.), Faculty of Medicine, University of Murcia, Murcia, Spain
| | - Laura Hurtado-Navarro
- From the Servei de Neurologia-Neuroimmunologia (S.M., A.P., J.R., X.M., M.C.), Centre d´Esclerosi Múltiple de Catalunya (Cemcat), Institut de Recerca Vall d´Hebron (VHIR), Hospital Universitari Vall d´Hebron, Universitat Autònoma de Barcelona, Spain; Biomedical Research Institute of Murcia (IMIB-Arrixaca) (L.H.-N., P.P.), University Clinical Hospital Virgen de la Arrixaca, Spain; Departments of Neurology and Immunology (L.M.M.V.), Hospital Universitario Ramón y Cajal, Instituto Ramón y Cajal de Investigacion Sanitaria, Madrid, Spain; and Department of Biochemistry and Molecular Biology B and Immunology (P.P.), Faculty of Medicine, University of Murcia, Murcia, Spain
| | - Agustin Pappolla
- From the Servei de Neurologia-Neuroimmunologia (S.M., A.P., J.R., X.M., M.C.), Centre d´Esclerosi Múltiple de Catalunya (Cemcat), Institut de Recerca Vall d´Hebron (VHIR), Hospital Universitari Vall d´Hebron, Universitat Autònoma de Barcelona, Spain; Biomedical Research Institute of Murcia (IMIB-Arrixaca) (L.H.-N., P.P.), University Clinical Hospital Virgen de la Arrixaca, Spain; Departments of Neurology and Immunology (L.M.M.V.), Hospital Universitario Ramón y Cajal, Instituto Ramón y Cajal de Investigacion Sanitaria, Madrid, Spain; and Department of Biochemistry and Molecular Biology B and Immunology (P.P.), Faculty of Medicine, University of Murcia, Murcia, Spain
| | - Luisa M M Villar
- From the Servei de Neurologia-Neuroimmunologia (S.M., A.P., J.R., X.M., M.C.), Centre d´Esclerosi Múltiple de Catalunya (Cemcat), Institut de Recerca Vall d´Hebron (VHIR), Hospital Universitari Vall d´Hebron, Universitat Autònoma de Barcelona, Spain; Biomedical Research Institute of Murcia (IMIB-Arrixaca) (L.H.-N., P.P.), University Clinical Hospital Virgen de la Arrixaca, Spain; Departments of Neurology and Immunology (L.M.M.V.), Hospital Universitario Ramón y Cajal, Instituto Ramón y Cajal de Investigacion Sanitaria, Madrid, Spain; and Department of Biochemistry and Molecular Biology B and Immunology (P.P.), Faculty of Medicine, University of Murcia, Murcia, Spain
| | - Jordi Río
- From the Servei de Neurologia-Neuroimmunologia (S.M., A.P., J.R., X.M., M.C.), Centre d´Esclerosi Múltiple de Catalunya (Cemcat), Institut de Recerca Vall d´Hebron (VHIR), Hospital Universitari Vall d´Hebron, Universitat Autònoma de Barcelona, Spain; Biomedical Research Institute of Murcia (IMIB-Arrixaca) (L.H.-N., P.P.), University Clinical Hospital Virgen de la Arrixaca, Spain; Departments of Neurology and Immunology (L.M.M.V.), Hospital Universitario Ramón y Cajal, Instituto Ramón y Cajal de Investigacion Sanitaria, Madrid, Spain; and Department of Biochemistry and Molecular Biology B and Immunology (P.P.), Faculty of Medicine, University of Murcia, Murcia, Spain
| | - Xavier Montalban
- From the Servei de Neurologia-Neuroimmunologia (S.M., A.P., J.R., X.M., M.C.), Centre d´Esclerosi Múltiple de Catalunya (Cemcat), Institut de Recerca Vall d´Hebron (VHIR), Hospital Universitari Vall d´Hebron, Universitat Autònoma de Barcelona, Spain; Biomedical Research Institute of Murcia (IMIB-Arrixaca) (L.H.-N., P.P.), University Clinical Hospital Virgen de la Arrixaca, Spain; Departments of Neurology and Immunology (L.M.M.V.), Hospital Universitario Ramón y Cajal, Instituto Ramón y Cajal de Investigacion Sanitaria, Madrid, Spain; and Department of Biochemistry and Molecular Biology B and Immunology (P.P.), Faculty of Medicine, University of Murcia, Murcia, Spain
| | - Pablo Pelegrin
- From the Servei de Neurologia-Neuroimmunologia (S.M., A.P., J.R., X.M., M.C.), Centre d´Esclerosi Múltiple de Catalunya (Cemcat), Institut de Recerca Vall d´Hebron (VHIR), Hospital Universitari Vall d´Hebron, Universitat Autònoma de Barcelona, Spain; Biomedical Research Institute of Murcia (IMIB-Arrixaca) (L.H.-N., P.P.), University Clinical Hospital Virgen de la Arrixaca, Spain; Departments of Neurology and Immunology (L.M.M.V.), Hospital Universitario Ramón y Cajal, Instituto Ramón y Cajal de Investigacion Sanitaria, Madrid, Spain; and Department of Biochemistry and Molecular Biology B and Immunology (P.P.), Faculty of Medicine, University of Murcia, Murcia, Spain
| | - Manuel Comabella
- From the Servei de Neurologia-Neuroimmunologia (S.M., A.P., J.R., X.M., M.C.), Centre d´Esclerosi Múltiple de Catalunya (Cemcat), Institut de Recerca Vall d´Hebron (VHIR), Hospital Universitari Vall d´Hebron, Universitat Autònoma de Barcelona, Spain; Biomedical Research Institute of Murcia (IMIB-Arrixaca) (L.H.-N., P.P.), University Clinical Hospital Virgen de la Arrixaca, Spain; Departments of Neurology and Immunology (L.M.M.V.), Hospital Universitario Ramón y Cajal, Instituto Ramón y Cajal de Investigacion Sanitaria, Madrid, Spain; and Department of Biochemistry and Molecular Biology B and Immunology (P.P.), Faculty of Medicine, University of Murcia, Murcia, Spain.
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13
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Nagar A, Harton JA. Flow Imaging of the Inflammasome: Evaluating ASC Speck Characteristics and Caspase-1 Activity. Methods Mol Biol 2023; 2635:185-202. [PMID: 37074664 DOI: 10.1007/978-1-0716-3020-4_11] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/20/2023]
Abstract
Examining inflammasome-associated speck structures is one of the most preferred and easiest ways to evaluate inflammasome activation. Microscopy-based evaluation of specks is preferable, but this approach is time-consuming and limited to small sample sizes. Speck-containing cells can also be quantitated by a flow cytometric method, time of flight inflammasome evaluation (TOFIE). However, TOFIE cannot perform single-cell analysis such as simultaneously visualizing ASC specks and caspase-1 activity, their location, and physical characteristics. Here we describe the application of an imaging flow cytometry-based approach that overcomes these limitations. Inflammasome and Caspase-1 Activity Characterization and Evaluation (ICCE) is a high-throughput, single-cell, rapid image analysis utilizing the Amnis ImageStream X instrument with over 99.5% accuracy. ICCE quantitatively and qualitatively characterizes the frequency, area, and cellular distribution of ASC specks and caspase-1 activity in mouse and human cells.
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Affiliation(s)
- Abhinit Nagar
- Program in Innate Immunity, Division of Infectious Diseases and Immunology, School of Medicine, University of Massachusetts, Worcester, MA, USA
| | - Jonathan A Harton
- Department of Immunology and Microbial Disease, Albany Medical College, Albany, NY, USA.
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14
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Sun J, Zhao X, Pei C, Zhu L, Zhang J, Kong X. Molecular characteristics and the roles of CaASC and its restriction to Aeromonas hydrophila in Carassius auratus. FISH & SHELLFISH IMMUNOLOGY 2023; 132:108452. [PMID: 36471559 DOI: 10.1016/j.fsi.2022.108452] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/02/2022] [Revised: 11/21/2022] [Accepted: 11/23/2022] [Indexed: 06/17/2023]
Abstract
Apoptosis-associated speck-like protein containing a caspase recruitment domain (ASC), as a critical adaptor molecule in inflammasome complexes, plays an important role in mediating inflammation reaction. In this study, the complete cDNA of ASC gene with 891 bp was cloned in Qihe crucian carp Carassius auratus (named as CaASC), which was composed of a 5'-UTR of 36 bp, a 3'-UTR of 252 bp, and an ORF of 603 bp encoded 200 amino acids with a predicted isoelectric point of 5.61 and a molecular mass of 22.0 kDa. Multiple sequence alignment and motif analysis revealed that CaASC contained a conserved N-terminal Pyrin domain (PYD) and a C-terminal Caspase recruitment domain (CARD). CaASC mRNA and protein expressions were detected in selected tissues, with the highest mRNA level in the spleen. Meanwhile, CaASC gene expressions were clearly altered in intestine, gill, skin, spleen, liver and head kidney of fish challenged by Aeromonas hydrophila, LPS, and polyI:C, respectively. The recombined proteins of CaASC with fluorescent tag were over-expressed in transfected 293T cells, and the green specks were observed obviously and located in the cytoplasm. Furthermore, knockdown of CaASC reduced the expression of IL-1β and promoted the bacterial colonization in fish tissues, while overexpression of CaASC increased the expression of IL-1β and hampered the bacterial colonization in these tissues. Taken together, these results identified the molecular characteristics of CaASC in C. auratus, and revealed its role in regulating IL-1β expression and restricting bacterial infection in vivo.
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Affiliation(s)
- Juan Sun
- College of Life Science, Henan Normal University, Xinxiang, China; Engineering Lab of Henan Province for Aquatic Animal Disease Control, College of Fisheries, Henan Normal University, Xinxiang, China; School of Nursing, Xinxiang Medical University, Xinxiang, China
| | - Xianliang Zhao
- Engineering Lab of Henan Province for Aquatic Animal Disease Control, College of Fisheries, Henan Normal University, Xinxiang, China
| | - Chao Pei
- Engineering Lab of Henan Province for Aquatic Animal Disease Control, College of Fisheries, Henan Normal University, Xinxiang, China
| | - Lei Zhu
- Engineering Lab of Henan Province for Aquatic Animal Disease Control, College of Fisheries, Henan Normal University, Xinxiang, China
| | - Jie Zhang
- Engineering Lab of Henan Province for Aquatic Animal Disease Control, College of Fisheries, Henan Normal University, Xinxiang, China
| | - Xianghui Kong
- College of Life Science, Henan Normal University, Xinxiang, China; Engineering Lab of Henan Province for Aquatic Animal Disease Control, College of Fisheries, Henan Normal University, Xinxiang, China.
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15
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Netting DJ, Mantegazza AR. Examining the Kinetics of Phagocytosis-Coupled Inflammasome Activation in Murine Bone Marrow-Derived Dendritic Cells. Methods Mol Biol 2023; 2692:289-309. [PMID: 37365476 DOI: 10.1007/978-1-0716-3338-0_20] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/28/2023]
Abstract
In the present chapter, we describe procedures to assess NLRP3 and NLRC4 inflammasome assembly by immunofluorescence microscopy or live cell imaging, together with inflammasome activation by biochemical and immunological techniques upon phagocytosis. We also include a step-by-step guide to automating the counting of inflammasome "specks" after imaging. While our focus resides on murine bone marrow-derived dendritic cells differentiated in the presence of granulocyte-macrophage colony-stimulating factor, which results in a cell population that resembles inflammatory dendritic cells, the strategies described herein may apply to other phagocytes as well.
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Affiliation(s)
- Daniel J Netting
- Department of Microbiology and Immunology, Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, PA, USA
| | - Adriana R Mantegazza
- Department of Microbiology and Immunology, Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, PA, USA.
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16
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Khare S, Devi S, Radian AD, Dorfleutner A, Stehlik C. Methods to Measure NLR Oligomerization I: Size Exclusion Chromatography, Co-immunoprecipitation, and Cross-Linking. Methods Mol Biol 2023; 2696:55-71. [PMID: 37578715 PMCID: PMC11073631 DOI: 10.1007/978-1-0716-3350-2_4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/15/2023]
Abstract
Protein oligomerization is a common principle of regulating cellular responses. Oligomerization of NLRs is essential for the formation of NLR signaling platforms and can be detected by several biochemical techniques. Some of these biochemical methods can be combined with functional assays, such as caspase-1 activity assay. Size exclusion chromatography (SEC) allows separation of native protein lysates into different sized complexes by FPLC for follow-up analysis. Using co-immunoprecipitation (co-IP), combined with SEC or on its own, enables subsequent antibody-based purification of NLR complexes and associated proteins, which can then be analyzed by immunoblot and/or subjected to functional caspase-1 activity assay. Native gel electrophoresis also allows detection of the NLR oligomerization state by immunoblot. Chemical cross-linking covalently joins two or more molecules, thus capturing the oligomeric state with high sensitivity and stability. ASC oligomerization has been successfully used as readout for NLR/ALR inflammasome activation in response to various PAMPs and DAMPs in human and mouse macrophages and THP-1 cells. Here, we provide a detailed description of the methods used for NLRP7 oligomerization in response to infection with Staphylococcus aureus (S. aureus) in primary human macrophages, co-immunoprecipitation, and immunoblot analysis of NLRP7 and NLRP3 inflammasome complexes as well as caspase-1 activity assays. Also, ASC oligomerization is shown in response to dsDNA, LPS/ATP, and LPS/nigericin in mouse bone marrow-derived macrophages (BMDMs) and/or THP-1 cells or human primary macrophages.
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Affiliation(s)
| | - Savita Devi
- Department of Academic Pathology, Department of Biomedical Sciences and Samuel Oschin Comprehensive Cancer Institute, Cedars Sinai Medical Center, Los Angeles, CA 90048, USA
| | | | - Andrea Dorfleutner
- Department of Academic Pathology, Department of Biomedical Sciences and Samuel Oschin Comprehensive Cancer Institute, Cedars Sinai Medical Center, Los Angeles, CA 90048, USA
| | - Christian Stehlik
- Department of Academic Pathology, Department of Biomedical Sciences and Samuel Oschin Comprehensive Cancer Institute, Cedars Sinai Medical Center, Los Angeles, CA 90048, USA
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17
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McLemore AF, Lage SL, Dominical VM, Rodrigues MA, McGraw KL. Pyroptosis Markers in Human Primary Specimens: Quantification of Intracellular ASC Specks by Imaging Flow Cytometry and Extracellular Oxidized Mitochondrial by ELISA. Methods Mol Biol 2023; 2641:81-100. [PMID: 37074643 DOI: 10.1007/978-1-0716-3040-2_7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/20/2023]
Abstract
Pyroptosis is an immunological response to infection and cellular stresses initiated by inflammasome oligomerization resulting in the release of pro-inflammatory factors including cytokines and other immune stimuli into the extracellular matrix. In order to understand the role of inflammasome activation and subsequent pyroptosis in human infection and disease pathogenesis and to explore markers of these signaling events as potential disease or response biomarkers, we must utilize quantitative, reliable, and reproducible assays to readily investigate these pathways in primary specimens. Here, we describe two methods using imaging flow cytometry for evaluation of inflammasome ASC specks in homogeneous peripheral blood monocytes and in bulk, heterogeneous peripheral blood mononuclear cells. Both methods can be applied to assess speck formation as a biomarker for inflammasome activation in primary specimens. Additionally, we describe the methods for quantification of extracellular oxidized mitochondrial DNA from primary plasma samples, serving as a proxy for pyroptosis. Collectively, these assays may be utilized to determine pyroptotic influences on viral infection and disease development or as diagnostic aids and response biomarkers.
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Affiliation(s)
- Amy F McLemore
- Clinical Sciences Department, Moffitt Cancer Center & Research Institute, Tampa, FL, USA
| | - Silvia L Lage
- Laboratory of Immunoregulation, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, USA
| | - Venina M Dominical
- Flow Cytometry Core Facility, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD, USA
| | | | - Kathy L McGraw
- Laboratory of Receptor Biology and Gene Expression, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA.
- Myeloid Malignancies Program, National Institutes of Health, Bethesda, USA.
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18
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Wittmann N, Mishra N, Gramenz J, Kuthning D, Behrendt AK, Bossaller L, Meyer-Bahlburg A. Inflammasome activation and formation of ASC specks in patients with juvenile idiopathic arthritis. Front Med (Lausanne) 2023; 10:1063772. [PMID: 36936231 PMCID: PMC10014801 DOI: 10.3389/fmed.2023.1063772] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2022] [Accepted: 02/08/2023] [Indexed: 03/05/2023] Open
Abstract
Objective The formation of large intracellular protein aggregates of the inflammasome adaptor ASC is a hallmark of inflammasome activation and characteristic of autoinflammation. Inflammasome activated cells release the highly proinflammatory cytokine IL-1β in addition to ASC specks into the extracellular space. Autoinflammatory activity has been demonstrated in systemic JIA, however minimal data exist on the role of inflammasomes in other JIA subtypes. We therefore investigated, if pyroptotic cells are present in the circulation of oligo- and poly-articular JIA. Methods Peripheral blood of JIA patients (n = 46) was investigated for ASC speck formation, a key step in inflammasome activation, by flow cytometry and immunofluorescence. Free ASC and proinflammatory cytokine levels were determined by ELISA and multiplex assay. Results Oligo-articular JIA patients showed a significantly increased proportion of ASC speck+ monocytes compared to poly-articular JIA patients. In serum free ASC alone is not sufficient to assess inflammasome activity and does not correlate with ASC speck+ monocytes. Compared to control several cytokines were significantly elevated in samples of JIA patients. JIA serum containing antinuclear antibodies, incubated with ASC specks boosts a secondary inflammation by IL-1β production in macrophages. Conclusion For the first time, we detect ex vivo inflammasome activation by ASC speck formation in oligo- and poly-articular JIA patients. Most notably, inflammasome activation was significantly higher in oligo- compared to poly-articular JIA patients. This data suggests that inflammasome derived autoinflammation may have a greater influence in the previously thought autoimmune oligo-articular JIA patients.
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Affiliation(s)
- Nico Wittmann
- Section of Pediatric Rheumatology, Department Pediatric and Adolescent Medicine, University Medicine, University of Greifswald, Greifswald, Germany
| | - Neha Mishra
- Section of Rheumatology, Department of Medicine A, University Medicine, University of Greifswald, Greifswald, Germany
| | - Jana Gramenz
- Section of Pediatric Rheumatology, Department Pediatric and Adolescent Medicine, University Medicine, University of Greifswald, Greifswald, Germany
| | - Daniela Kuthning
- Section of Pediatric Rheumatology, Department Pediatric and Adolescent Medicine, University Medicine, University of Greifswald, Greifswald, Germany
| | - Ann-Kathrin Behrendt
- Section of Pediatric Rheumatology, Department Pediatric and Adolescent Medicine, University Medicine, University of Greifswald, Greifswald, Germany
| | - Lukas Bossaller
- Section of Rheumatology, Department of Medicine A, University Medicine, University of Greifswald, Greifswald, Germany
| | - Almut Meyer-Bahlburg
- Section of Pediatric Rheumatology, Department Pediatric and Adolescent Medicine, University Medicine, University of Greifswald, Greifswald, Germany
- *Correspondence: Almut Meyer-Bahlburg, ✉
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19
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Jenster LM, Lange KE, Normann S, vom Hemdt A, Wuerth JD, Schiffelers LD, Tesfamariam YM, Gohr FN, Klein L, Kaltheuner IH, Ebner S, Lapp DJ, Mayer J, Moecking J, Ploegh HL, Latz E, Meissner F, Geyer M, Kümmerer BM, Schmidt FI. P38 kinases mediate NLRP1 inflammasome activation after ribotoxic stress response and virus infection. J Exp Med 2022; 220:213626. [PMID: 36315050 PMCID: PMC9623368 DOI: 10.1084/jem.20220837] [Citation(s) in RCA: 26] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2022] [Revised: 09/13/2022] [Accepted: 10/06/2022] [Indexed: 11/07/2022] Open
Abstract
Inflammasomes integrate cytosolic evidence of infection or damage to mount inflammatory responses. The inflammasome sensor NLRP1 is expressed in human keratinocytes and coordinates inflammation in the skin. We found that diverse stress signals induce human NLRP1 inflammasome assembly by activating MAP kinase p38: While the ribotoxic stress response to UV and microbial molecules exclusively activates p38 through MAP3K ZAKα, infection with arthropod-borne alphaviruses, including Semliki Forest and Chikungunya virus, activates p38 through ZAKα and potentially other MAP3K. We demonstrate that p38 directly phosphorylates NLRP1 and that serine 107 in the linker region is critical for activation. NLRP1 phosphorylation is followed by ubiquitination of NLRP1PYD, N-terminal degradation of NLRP1, and nucleation of inflammasomes by NLRP1UPA-CARD. In contrast, activation of NLRP1 by nanobody-mediated ubiquitination, viral proteases, or inhibition of DPP9 was independent of p38 activity. Taken together, we define p38 activation as a unifying signaling hub that controls NLRP1 inflammasome activation by integrating a variety of cellular stress signals relevant to the skin.
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Affiliation(s)
- Lea-Marie Jenster
- Institute of Innate Immunity, Medical Faculty, University of Bonn, Bonn, Germany
| | - Karl-Elmar Lange
- Institute of Innate Immunity, Medical Faculty, University of Bonn, Bonn, Germany
| | - Sabine Normann
- Institute of Innate Immunity, Medical Faculty, University of Bonn, Bonn, Germany
| | - Anja vom Hemdt
- Institute of Virology, Medical Faculty, University of Bonn, Bonn, Germany
| | - Jennifer D. Wuerth
- Institute of Innate Immunity, Medical Faculty, University of Bonn, Bonn, Germany
| | | | - Yonas M. Tesfamariam
- Institute of Innate Immunity, Medical Faculty, University of Bonn, Bonn, Germany
| | - Florian N. Gohr
- Institute of Innate Immunity, Medical Faculty, University of Bonn, Bonn, Germany,Department of Microbiology and Immunology, The University of Melbourne, Parkville, Victoria, Australia
| | - Laura Klein
- Institute of Innate Immunity, Medical Faculty, University of Bonn, Bonn, Germany
| | - Ines H. Kaltheuner
- Institute of Structural Biology, Medical Faculty, University of Bonn, Bonn, Germany
| | - Stefan Ebner
- Institute of Innate Immunity, Medical Faculty, University of Bonn, Bonn, Germany
| | - Dorothee J. Lapp
- Institute of Innate Immunity, Medical Faculty, University of Bonn, Bonn, Germany
| | - Jacob Mayer
- Institute of Innate Immunity, Medical Faculty, University of Bonn, Bonn, Germany
| | - Jonas Moecking
- Department of Microbiology and Immunology, The University of Melbourne, Parkville, Victoria, Australia,Institute of Structural Biology, Medical Faculty, University of Bonn, Bonn, Germany
| | - Hidde L. Ploegh
- Program in Cellular and Molecular Medicine, Boston Children’s Hospital, Boston, MA
| | - Eicke Latz
- Institute of Innate Immunity, Medical Faculty, University of Bonn, Bonn, Germany
| | - Felix Meissner
- Institute of Innate Immunity, Medical Faculty, University of Bonn, Bonn, Germany
| | - Matthias Geyer
- Institute of Structural Biology, Medical Faculty, University of Bonn, Bonn, Germany
| | - Beate M. Kümmerer
- Institute of Virology, Medical Faculty, University of Bonn, Bonn, Germany,German Centre for Infection Research, Partner Site Bonn-Cologne, Bonn, Germany
| | - Florian I. Schmidt
- Institute of Innate Immunity, Medical Faculty, University of Bonn, Bonn, Germany,Core Facility Nanobodies, Medical Faculty, University of Bonn, Bonn, Germany,Correspondence to Florian I. Schmidt:
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20
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López‐Haber C, Netting DJ, Hutchins Z, Ma X, Hamilton KE, Mantegazza AR. The phagosomal solute transporter SLC15A4 promotes inflammasome activity via mTORC1 signaling and autophagy restraint in dendritic cells. EMBO J 2022; 41:e111161. [PMID: 36031853 PMCID: PMC9574736 DOI: 10.15252/embj.2022111161] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2022] [Revised: 07/22/2022] [Accepted: 08/01/2022] [Indexed: 01/18/2023] Open
Abstract
Phagocytosis is the necessary first step to sense foreign microbes or particles and enables activation of innate immune pathways such as inflammasomes. However, the molecular mechanisms underlying how phagosomes modulate inflammasome activity are not fully understood. We show that in murine dendritic cells (DCs), the lysosomal histidine/peptide solute carrier transporter SLC15A4, associated with human inflammatory disorders, is recruited to phagosomes and is required for optimal inflammasome activity after infectious or sterile stimuli. Dextran sodium sulfate-treated SLC15A4-deficient mice exhibit decreased colon inflammation, reduced IL-1β production by intestinal DCs, and increased autophagy. Similarly, SLC15A4-deficient DCs infected with Salmonella typhimurium show reduced caspase-1 cleavage and IL-1β production. This correlates with peripheral NLRC4 inflammasome assembly and increased autophagy. Overexpression of constitutively active mTORC1 rescues decreased IL-1β levels and caspase1 cleavage, and restores perinuclear inflammasome positioning. Our findings support that SLC15A4 couples phagocytosis with inflammasome perinuclear assembly and inhibition of autophagy through phagosomal content sensing. Our data also reveal the previously unappreciated importance of mTORC1 signaling pathways to promote and sustain inflammasome activity.
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Affiliation(s)
- Cynthia López‐Haber
- Department of Pathology and Laboratory MedicineChildren's Hospital of PhiladelphiaPhiladelphiaPAUSA
- Department of Pathology and Laboratory Medicine, Perelman School of MedicineUniversity of PennsylvaniaPhiladelphiaPAUSA
- Present address:
Department of Microbiology and Immunology, Sidney Kimmel Medical CollegeThomas Jefferson UniversityPhiladelphiaPAUSA
| | - Daniel J Netting
- Department of Microbiology and Immunology, Sidney Kimmel Medical CollegeThomas Jefferson UniversityPhiladelphiaPAUSA
| | - Zachary Hutchins
- Department of Microbiology and Immunology, Sidney Kimmel Medical CollegeThomas Jefferson UniversityPhiladelphiaPAUSA
| | - Xianghui Ma
- Division of Gastroenterology, Hepatology, and Nutrition, Department of PediatricsChildren's Hospital of PhiladelphiaPhiladelphiaPAUSA
| | - Kathryn E Hamilton
- Division of Gastroenterology, Hepatology, and Nutrition, Department of PediatricsChildren's Hospital of PhiladelphiaPhiladelphiaPAUSA
| | - Adriana R Mantegazza
- Department of Pathology and Laboratory MedicineChildren's Hospital of PhiladelphiaPhiladelphiaPAUSA
- Department of Pathology and Laboratory Medicine, Perelman School of MedicineUniversity of PennsylvaniaPhiladelphiaPAUSA
- Present address:
Department of Microbiology and Immunology, Sidney Kimmel Medical CollegeThomas Jefferson UniversityPhiladelphiaPAUSA
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21
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Feriotti C, Sá-Pessoa J, Calderón-González R, Gu L, Morris B, Sugisawa R, Insua JL, Carty M, Dumigan A, Ingram RJ, Kissenpfening A, Bowie AG, Bengoechea JA. Klebsiella pneumoniae hijacks the Toll-IL-1R protein SARM1 in a type I IFN-dependent manner to antagonize host immunity. Cell Rep 2022; 40:111167. [PMID: 35947948 PMCID: PMC9638020 DOI: 10.1016/j.celrep.2022.111167] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2021] [Revised: 05/18/2022] [Accepted: 07/14/2022] [Indexed: 02/06/2023] Open
Abstract
Many bacterial pathogens antagonize host defense responses by translocating effector proteins into cells. It remains an open question how those pathogens not encoding effectors counteract anti-bacterial immunity. Here, we show that Klebsiella pneumoniae exploits the evolutionary conserved innate protein SARM1 to regulate negatively MyD88- and TRIF-governed inflammation, and the activation of the MAP kinases ERK and JNK. SARM1 is required for Klebsiella induction of interleukin-10 (IL-10) by fine-tuning the p38-type I interferon (IFN) axis. SARM1 inhibits the activation of Klebsiella-induced absent in melanoma 2 inflammasome to limit IL-1β production, suppressing further inflammation. Klebsiella exploits type I IFNs to induce SARM1 in a capsule and lipopolysaccharide O-polysaccharide-dependent manner via the TLR4-TRAM-TRIF-IRF3-IFNAR1 pathway. Absence of SARM1 reduces the intracellular survival of K. pneumoniae in macrophages, whereas sarm1-deficient mice control the infection. Altogether, our results illustrate an anti-immunology strategy deployed by a human pathogen. SARM1 inhibition will show a beneficial effect to treat Klebsiella infections.
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Affiliation(s)
- Claudia Feriotti
- Wellcome-Wolfson Institute for Experimental Medicine, School of Medicine, Dentistry and Biomedical Sciences, Queen's University Belfast, 97 Lisburn Road, Belfast, UK
| | - Joana Sá-Pessoa
- Wellcome-Wolfson Institute for Experimental Medicine, School of Medicine, Dentistry and Biomedical Sciences, Queen's University Belfast, 97 Lisburn Road, Belfast, UK
| | - Ricardo Calderón-González
- Wellcome-Wolfson Institute for Experimental Medicine, School of Medicine, Dentistry and Biomedical Sciences, Queen's University Belfast, 97 Lisburn Road, Belfast, UK
| | - Lili Gu
- School of Biochemistry and Immunology, Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin 2, Ireland
| | - Brenda Morris
- Wellcome-Wolfson Institute for Experimental Medicine, School of Medicine, Dentistry and Biomedical Sciences, Queen's University Belfast, 97 Lisburn Road, Belfast, UK
| | - Ryoichi Sugisawa
- School of Biochemistry and Immunology, Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin 2, Ireland
| | - Jose L Insua
- Wellcome-Wolfson Institute for Experimental Medicine, School of Medicine, Dentistry and Biomedical Sciences, Queen's University Belfast, 97 Lisburn Road, Belfast, UK
| | - Michael Carty
- School of Biochemistry and Immunology, Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin 2, Ireland
| | - Amy Dumigan
- Wellcome-Wolfson Institute for Experimental Medicine, School of Medicine, Dentistry and Biomedical Sciences, Queen's University Belfast, 97 Lisburn Road, Belfast, UK
| | - Rebecca J Ingram
- Wellcome-Wolfson Institute for Experimental Medicine, School of Medicine, Dentistry and Biomedical Sciences, Queen's University Belfast, 97 Lisburn Road, Belfast, UK
| | - Adrien Kissenpfening
- Wellcome-Wolfson Institute for Experimental Medicine, School of Medicine, Dentistry and Biomedical Sciences, Queen's University Belfast, 97 Lisburn Road, Belfast, UK
| | - Andrew G Bowie
- School of Biochemistry and Immunology, Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin 2, Ireland
| | - José A Bengoechea
- Wellcome-Wolfson Institute for Experimental Medicine, School of Medicine, Dentistry and Biomedical Sciences, Queen's University Belfast, 97 Lisburn Road, Belfast, UK.
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22
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Bertoni A, Penco F, Mollica H, Bocca P, Prigione I, Corcione A, Cangelosi D, Schena F, Del Zotto G, Amaro A, Paladino N, Pontali E, Feasi M, Signa S, Bustaffa M, Caorsi R, Palmeri S, Contini P, De Palma R, Pfeffer U, Uva P, Rubartelli A, Gattorno M, Volpi S. Spontaneous NLRP3 inflammasome-driven IL1-β secretion is induced in severe COVID-19 patients and responds to anakinra treatment. J Allergy Clin Immunol 2022; 150:796-805. [PMID: 35835255 PMCID: PMC9272569 DOI: 10.1016/j.jaci.2022.05.029] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2021] [Revised: 05/03/2022] [Accepted: 05/18/2022] [Indexed: 10/27/2022]
Abstract
BACKGROUND SARS-CoV-2 infection may result in a severe pneumonia associated to elevation of blood inflammatory parameters, reminiscent of cytokine storm syndrome. Steroidal anti-inflammatory therapies have shown efficacy in reducing mortality in critically ill patients, however the mechanisms by which SARS-CoV2 virus triggers such an extensive inflammation remain unexplained. OBJECTIVES To dissect the mechanisms underlying SARS-CoV-2 associated inflammation in severe COVID-19 patients we studied the role of IL-1β, a pivotal cytokine driving inflammatory phenotypes, whose maturation and secretion are regulated by inflammasomes. METHODS We analyzed NLRP3 pathway activation by means of confocal microscopy, plasma cytokine measurement, cytokine secretion following in vitro stimulation of blood circulating monocytes and whole blood RNA sequencing. The role of ORF3a SARS-CoV2 protein was assessed by confocal microscopy analysis following nucleofection of a monocytic cell line. RESULTS We found that circulating monocytes from COVID-19 patients display ASC specks that colocalize with NLRP3 inflammasome and spontaneously secrete IL-1β in vitro. This spontaneous activation reverts following patient's treatment with the IL-1 receptor antagonist anakinra. Transfection of a monocytic cell line with cDNA coding for the ORF3a SARS-CoV2 protein, resulted in ASC speck formation CONCLUSIONS: These results provide further evidence that IL-1β targeting could represent an effective strategy in this disease and suggest a mechanistic explanation for the strong inflammatory manifestations associated to COVID-19.
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Affiliation(s)
- Arinna Bertoni
- UOSD Centro per le Malattie Autoinfiammatorie e Immunodeficienze, IRCCS Istituto Giannina Gaslini, Genova, Italy; DINOGMI, Università degli Studi di Genova, Genova, Italy
| | - Federica Penco
- UOSD Centro per le Malattie Autoinfiammatorie e Immunodeficienze, IRCCS Istituto Giannina Gaslini, Genova, Italy
| | - Hilaria Mollica
- UOSD Centro per le Malattie Autoinfiammatorie e Immunodeficienze, IRCCS Istituto Giannina Gaslini, Genova, Italy; DINOGMI, Università degli Studi di Genova, Genova, Italy
| | - Paola Bocca
- UOSD Centro per le Malattie Autoinfiammatorie e Immunodeficienze, IRCCS Istituto Giannina Gaslini, Genova, Italy
| | - Ignazia Prigione
- UOSD Centro per le Malattie Autoinfiammatorie e Immunodeficienze, IRCCS Istituto Giannina Gaslini, Genova, Italy
| | - Anna Corcione
- UOSD Centro per le Malattie Autoinfiammatorie e Immunodeficienze, IRCCS Istituto Giannina Gaslini, Genova, Italy
| | - Davide Cangelosi
- Clinical Bioinformatics Unit, IRCCS Istituto Giannina Gaslini, Genova, Italy
| | - Francesca Schena
- UOSD Centro per le Malattie Autoinfiammatorie e Immunodeficienze, IRCCS Istituto Giannina Gaslini, Genova, Italy
| | - Genny Del Zotto
- Department of Research and Diagnostics, IRCCS Istituto Giannina Gaslini, Genoa, Italy
| | - Adriana Amaro
- IRCCS Ospedale Policlinico San Martino, Genova, Italy
| | - Noemi Paladino
- UOSD Centro per le Malattie Autoinfiammatorie e Immunodeficienze, IRCCS Istituto Giannina Gaslini, Genova, Italy
| | | | | | - Sara Signa
- UOSD Centro per le Malattie Autoinfiammatorie e Immunodeficienze, IRCCS Istituto Giannina Gaslini, Genova, Italy; DINOGMI, Università degli Studi di Genova, Genova, Italy
| | - Marta Bustaffa
- UOSD Centro per le Malattie Autoinfiammatorie e Immunodeficienze, IRCCS Istituto Giannina Gaslini, Genova, Italy
| | - Roberta Caorsi
- UOSD Centro per le Malattie Autoinfiammatorie e Immunodeficienze, IRCCS Istituto Giannina Gaslini, Genova, Italy
| | - Serena Palmeri
- DINOGMI, Università degli Studi di Genova, Genova, Italy
| | - Paola Contini
- Department of Internal Medicine, University of Genoa and IRCCS IST-Ospedale San Martino, Genoa, Italy
| | - Raffaele De Palma
- Department of Internal Medicine, University of Genoa and IRCCS IST-Ospedale San Martino, Genoa, Italy
| | | | - Paolo Uva
- Clinical Bioinformatics Unit, IRCCS Istituto Giannina Gaslini, Genova, Italy; Italian Institute of Technology, Genova, Italy
| | | | - Marco Gattorno
- UOSD Centro per le Malattie Autoinfiammatorie e Immunodeficienze, IRCCS Istituto Giannina Gaslini, Genova, Italy.
| | - Stefano Volpi
- UOSD Centro per le Malattie Autoinfiammatorie e Immunodeficienze, IRCCS Istituto Giannina Gaslini, Genova, Italy; DINOGMI, Università degli Studi di Genova, Genova, Italy
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23
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Structure of the NLRP3 decamer bound to the cytokine release inhibitor CRID3. Nature 2022; 604:184-189. [PMID: 35114687 DOI: 10.1038/s41586-022-04467-w] [Citation(s) in RCA: 104] [Impact Index Per Article: 52.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2021] [Accepted: 01/18/2022] [Indexed: 11/09/2022]
Abstract
NLRP3 is an intracellular sensor protein whose activation by a broad spectrum of exogenous and endogenous stimuli leads to inflammasome formation and pyroptosis1,2. The conformational states of NLRP3 and the way antagonistic small molecules act at the molecular level remain poorly understood2,3. Here we report the cryo-electron microscopy structures of full-length human NLRP3 in its native form and complexed with the inhibitor CRID3 (also named MCC950)4. Inactive, ADP-bound NLRP3 is a decamer composed of homodimers of intertwined LRR domains that assemble back-to-back as pentamers. The NACHT domain is located at the apical axis of this spherical structure. One PYD dimer is additionally formed inside the LRR cage. Molecular contacts between the concave sites of two opposing LRRs are mediated by an acidic loop extending from an LRR transition segment. Binding of CRID3 significantly stabilizes the NACHT and LRR domains relative to each other, allowing structural resolution of 3.8-4.2 Å. CRID3 binds into a cleft, connecting four subdomains of the NACHT with the transition LRR. Its central sulfonylurea group interacts with the Walker A motif of the NLRP3 nucleotide-binding domain and is sandwiched between two arginines, explaining the specificity of NLRP3 for this chemical entity. With the determination of the binding site of this lead therapeutic, specific targeting of NLRP3 for the treatment of autoinflammatory and autoimmune diseases and rational drug optimization are within reach.
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24
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Eiberg S, Ancker L, Javed S, Haag F. Visualizing P2X7-Dependent Inflammasome Formation in Human Monocytes by Fluorescence Microscopy and Flow Cytometry. Methods Mol Biol 2022; 2510:265-278. [PMID: 35776330 DOI: 10.1007/978-1-0716-2384-8_14] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
One of the most prominent effects of P2X7 activation in myeloid cells is the induction of the assembly of the NLRP3 inflammasome, a central process controlling the secretion of pro-inflammatory cytokines of the IL-1 family such as IL-1β and IL-18. The ability to visualize inflammasome formation greatly facilitates research into the role of P2X7 in inflammation. In this chapter, a method to monitor the formation of the NLPR3 inflammasome in monocytes and other myeloid cells could be demonstrated. Following priming by lipopolysaccharide (LPS), P2X7 was stimulated by ATP to mediate inflammasome assembly. This causes cytosolically disperse ASC, a central component of the inflammasome, to aggregate into microscopically visible specks due to its recruitment to the inflammasome. Methods to monitor this change in the spatial distribution of ASC in human peripheral blood monocytes by flow cytometry and fluorescence microscopy are presented.
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Affiliation(s)
- Samantha Eiberg
- Institute of Immunology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Leif Ancker
- Institute of Immunology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Sana Javed
- Institute of Immunology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Friedrich Haag
- Institute of Immunology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany.
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25
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Hurtado-Navarro L, Baroja-Mazo A, Martínez-Banaclocha H, Pelegrín P. Assessment of ASC Oligomerization by Flow Cytometry. Methods Mol Biol 2022; 2459:1-9. [PMID: 35212949 DOI: 10.1007/978-1-0716-2144-8_1] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Inflammasomes are multiprotein complexes that critically control different aspects of innate and adaptive immunity. Upon activation, inflammasome proteins oligomerize forming scaffolds to nucleate the apoptosis-associated speck-like protein containing a CARD (ASC) in filaments that will finally result in large ASC oligomers that are commonly named as ASC specks. In this chapter, we present a method to monitor NLRP3 or pyrin inflammasome activation in human monocytes upon extracellular ATP or Clostridium difficile toxin B treatment, respectively, by detecting intracellular oligomers of ASC by flow cytometry. This method could be used to evaluate the degree of inflammasome activation in blood samples from patients suffering from different chronic inflammatory diseases.
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Affiliation(s)
- Laura Hurtado-Navarro
- Biomedical Research Institute of Murcia (IMIB), Clinical University Hospital Virgen de la Arrixaca, Murcia, Spain
| | - Alberto Baroja-Mazo
- Biomedical Research Institute of Murcia (IMIB), Clinical University Hospital Virgen de la Arrixaca, Murcia, Spain
| | - Helios Martínez-Banaclocha
- Biomedical Research Institute of Murcia (IMIB), Clinical University Hospital Virgen de la Arrixaca, Murcia, Spain
| | - Pablo Pelegrín
- Biomedical Research Institute of Murcia (IMIB), Clinical University Hospital Virgen de la Arrixaca, Murcia, Spain.
- Department of Biochemistry and Molecular Biology B and Immunology, Faculty of Medicine, University of Murcia,, Murcia, Spain.
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26
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Steiner A, Reygaerts T, Pontillo A, Ceccherini I, Moecking J, Moghaddas F, Davidson S, Caroli F, Grossi A, Castro FFM, Kalil J, Gohr FN, Schmidt FI, Bartok E, Zillinger T, Hartmann G, Geyer M, Gattorno M, Mendonça LO, Masters SL. Recessive NLRC4-Autoinflammatory Disease Reveals an Ulcerative Colitis Locus. J Clin Immunol 2021; 42:325-335. [PMID: 34783940 PMCID: PMC8821057 DOI: 10.1007/s10875-021-01175-4] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2019] [Accepted: 10/26/2021] [Indexed: 11/03/2022]
Abstract
PURPOSE NLRC4-associated autoinflammatory disease (NLRC4-AID) is an autosomal dominant condition presenting with a range of clinical manifestations which can include macrophage activation syndrome (MAS) and severe enterocolitis. We now report the first homozygous mutation in NLRC4 (c.478G > A, p.A160T) causing autoinflammatory disease with immune dysregulation and find that heterozygous carriers in the general population are at increased risk of developing ulcerative colitis. METHODS Circulating immune cells and inflammatory markers were profiled and historical clinical data interrogated. DNA was extracted and sequenced using standard procedures. Inflammasome activation assays for ASC speck formation, pyroptosis, and IL-1β/IL-18 secretion confirmed pathogenicity of the mutation in vitro. Genome-wide association of NLRC4 (A160T) with ulcerative colitis was examined using data from the IBD exomes portal. RESULTS A 60-year-old Brazilian female patient was evaluated for recurrent episodes of systemic inflammation from six months of age. Episodes were characterized by recurrent low-grade fever, chills, oral ulceration, uveitis, arthralgia, and abdominal pain, followed by diarrhea with mucus and variable skin rash. High doses of corticosteroids were somewhat effective in controlling disease and anti-IL-1β therapy partially controlled symptoms. While on treatment, serum IL-1β and IL-18 levels remained elevated. Genetic investigations identified a homozygous mutation in NLRC4 (A160T), inherited in a recessive fashion. Increased ASC speck formation and IL-1β/IL-18 secretion confirmed pathogenicity when NLRC4 (A160T) was analyzed in human cell lines. This allele is significantly enriched in patients with ulcerative colitis: OR 2.546 (95% 1.778-3.644), P = 0.01305. CONCLUSION NLRC4 (A160T) can either cause recessively inherited autoinflammation and immune dysregulation, or function as a heterozygous risk factor for the development of ulcerative colitis.
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Affiliation(s)
- Annemarie Steiner
- Inflammation Division, The Walter and Eliza Hall Institute of Medical Research, 1G Royal Parade, Parkville, VIC, 3052, Australia.,Department of Medical Biology, The University of Melbourne, Parkville, VIC, 3010, Australia.,Institute of Structural Biology, Medical Faculty, University of Bonn, 53127, Bonn, Germany
| | - Thomas Reygaerts
- Inflammation Division, The Walter and Eliza Hall Institute of Medical Research, 1G Royal Parade, Parkville, VIC, 3052, Australia.,Department of Medical Biology, The University of Melbourne, Parkville, VIC, 3010, Australia
| | - Alessandra Pontillo
- Immunogenetic Laboratory, Department of Immunology, Biomedical Science Institute, Universidade of São Paulo, São Paulo, Brazil
| | - Isabella Ceccherini
- Laboratory of Genetics and Genomics of Rare Diseases, IRCCS Istituto Giannina Gaslini, 16147, Genoa, Italy
| | - Jonas Moecking
- Inflammation Division, The Walter and Eliza Hall Institute of Medical Research, 1G Royal Parade, Parkville, VIC, 3052, Australia.,Department of Medical Biology, The University of Melbourne, Parkville, VIC, 3010, Australia.,Institute of Structural Biology, Medical Faculty, University of Bonn, 53127, Bonn, Germany
| | - Fiona Moghaddas
- Inflammation Division, The Walter and Eliza Hall Institute of Medical Research, 1G Royal Parade, Parkville, VIC, 3052, Australia.,Department of Medical Biology, The University of Melbourne, Parkville, VIC, 3010, Australia.,Department of Clinical Immunology and Allergy, The Royal Melbourne Hospital, Parkville, VIC, 3052, Australia
| | - Sophia Davidson
- Inflammation Division, The Walter and Eliza Hall Institute of Medical Research, 1G Royal Parade, Parkville, VIC, 3052, Australia.,Department of Medical Biology, The University of Melbourne, Parkville, VIC, 3010, Australia
| | - Francesco Caroli
- Laboratory of Genetics and Genomics of Rare Diseases, IRCCS Istituto Giannina Gaslini, 16147, Genoa, Italy
| | - Alice Grossi
- Laboratory of Genetics and Genomics of Rare Diseases, IRCCS Istituto Giannina Gaslini, 16147, Genoa, Italy
| | - Fabio Fernandes Morato Castro
- Division of Clinical Immunology and Allergy, Department of Internal Medicine, Universidade of São Paulo, São Paulo, Brazil
| | - Jorge Kalil
- Division of Clinical Immunology and Allergy, Department of Internal Medicine, Universidade of São Paulo, São Paulo, Brazil
| | - Florian N Gohr
- Institute of Innate Immunity, Medical Faculty, University of Bonn, 53127, Bonn, Germany.,Department of Microbiology and Immunology, The University of Melbourne, Parkville, VIC, 3010, Australia
| | - Florian I Schmidt
- Institute of Innate Immunity, Medical Faculty, University of Bonn, 53127, Bonn, Germany
| | - Eva Bartok
- Institute of Clinical Chemistry and Clinical Pharmacology, University Hospital Bonn, 53127, Bonn, Germany.,Unit of Experimental Immunology, Department of Biomedical Sciences, Institute of Tropical Medicine, Antwerp, Belgium
| | - Thomas Zillinger
- Institute of Clinical Chemistry and Clinical Pharmacology, University Hospital Bonn, 53127, Bonn, Germany.,Institute of Immunology, Philipps-University Marburg, BMFZ, 35043, Marburg, Germany
| | - Gunther Hartmann
- Institute of Clinical Chemistry and Clinical Pharmacology, University Hospital Bonn, 53127, Bonn, Germany.,German Center for Infection Research (DZIF), Partner Site Bonn-Cologne, Cologne, Germany
| | - Matthias Geyer
- Institute of Structural Biology, Medical Faculty, University of Bonn, 53127, Bonn, Germany
| | - Marco Gattorno
- Center for Autoinflammatory Diseases and Primary Immunodeficiencies, IRCCS Istituto Giannina Gaslini, 16147, Genoa, Italy
| | - Leonardo Oliveira Mendonça
- Immunogenetic Laboratory, Department of Immunology, Biomedical Science Institute, Universidade of São Paulo, São Paulo, Brazil.,Laboratory of Genetics and Genomics of Rare Diseases, IRCCS Istituto Giannina Gaslini, 16147, Genoa, Italy.,Division of Clinical Immunology and Allergy, Department of Internal Medicine, Universidade of São Paulo, São Paulo, Brazil.,Center for Autoinflammatory Diseases and Primary Immunodeficiencies, IRCCS Istituto Giannina Gaslini, 16147, Genoa, Italy.,Center for Rare and Immunological Disorders, DASA-Hospital 9 de Julho, São Paulo, Brazil
| | - Seth L Masters
- Inflammation Division, The Walter and Eliza Hall Institute of Medical Research, 1G Royal Parade, Parkville, VIC, 3052, Australia. .,Department of Medical Biology, The University of Melbourne, Parkville, VIC, 3010, Australia.
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27
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Heiser D, Rubert J, Unterreiner A, Maurer C, Kamke M, Bodendorf U, Farady CJ, Roediger B, Bornancin F. Evaluation of protein kinase D auto-phosphorylation as biomarker for NLRP3 inflammasome activation. PLoS One 2021; 16:e0248668. [PMID: 34767572 PMCID: PMC8589197 DOI: 10.1371/journal.pone.0248668] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2021] [Accepted: 10/18/2021] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND The NLRP3 inflammasome is a critical component of sterile inflammation, which is involved in many diseases. However, there is currently no known proximal biomarker for measuring NLRP3 activation in pathological conditions. Protein kinase D (PKD) has emerged as an important NLRP3 kinase that catalyzes the release of a phosphorylated NLRP3 species that is competent for inflammasome complex assembly. METHODS To explore the potential for PKD activation to serve as a selective biomarker of the NLRP3 pathway, we tested various stimulatory conditions in THP-1 and U937 cell lines, probing the inflammasome space beyond NLRP3. We analyzed the correlation between PKD activation (monitored by its auto-phosphorylation) and functional inflammasome readouts. RESULTS PKD activation/auto-phosphorylation always preceded cleavage of caspase-1 and gasdermin D, and treatment with the PKD inhibitor CRT0066101 could block NLRP3 inflammasome assembly and interleukin-1β production. Conversely, blocking NLRP3 either genetically or using the MCC950 inhibitor prevented PKD auto-phosphorylation, indicating a bidirectional functional crosstalk between NLRP3 and PKD. Further assessments of the pyrin and NLRC4 pathways, however, revealed that PKD auto-phosphorylation can be triggered by a broad range of stimuli unrelated to NLRP3 inflammasome assembly. CONCLUSION Although PKD and NLRP3 become functionally interconnected during NLRP3 activation, the promiscuous reactivity of PKD challenges its potential use for tracing the NLRP3 inflammasome pathway.
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Affiliation(s)
- Diane Heiser
- Autoimmunity, Transplantation & Inflammation, Novartis Institutes for BioMedical Research, Basel, Switzerland
| | - Joëlle Rubert
- Autoimmunity, Transplantation & Inflammation, Novartis Institutes for BioMedical Research, Basel, Switzerland
| | - Adeline Unterreiner
- Autoimmunity, Transplantation & Inflammation, Novartis Institutes for BioMedical Research, Basel, Switzerland
| | - Claudine Maurer
- Autoimmunity, Transplantation & Inflammation, Novartis Institutes for BioMedical Research, Basel, Switzerland
| | - Marion Kamke
- Autoimmunity, Transplantation & Inflammation, Novartis Institutes for BioMedical Research, Basel, Switzerland
| | - Ursula Bodendorf
- Autoimmunity, Transplantation & Inflammation, Novartis Institutes for BioMedical Research, Basel, Switzerland
| | - Christopher J. Farady
- Autoimmunity, Transplantation & Inflammation, Novartis Institutes for BioMedical Research, Basel, Switzerland
| | - Ben Roediger
- Autoimmunity, Transplantation & Inflammation, Novartis Institutes for BioMedical Research, Basel, Switzerland
| | - Frédéric Bornancin
- Autoimmunity, Transplantation & Inflammation, Novartis Institutes for BioMedical Research, Basel, Switzerland
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28
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Nagar A, Rahman T, Harton JA. The ASC Speck and NLRP3 Inflammasome Function Are Spatially and Temporally Distinct. Front Immunol 2021; 12:752482. [PMID: 34745125 PMCID: PMC8566762 DOI: 10.3389/fimmu.2021.752482] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2021] [Accepted: 09/23/2021] [Indexed: 01/20/2023] Open
Abstract
Although considered the ternary inflammasome structure, whether the singular, perinuclear NLRP3:ASC speck is synonymous with the NLRP3 inflammasome is unclear. Herein, we report that the NLRP3:ASC speck is not required for nigericin-induced inflammasome activation but facilitates and maximizes IL-1β processing. Furthermore, the NLRP3 agonists H2O2 and MSU elicited IL-1β maturation without inducing specks. Notably, caspase-1 activity is spatially distinct from the speck, occurring at multiple cytoplasmic sites. Additionally, caspase-1 activity negatively regulates speck frequency and speck size, while speck numbers and IL-1β processing are negatively correlated, cyclical and can be uncoupled by NLRP3 mutations or inhibiting microtubule polymerization. Finally, when specks are present, caspase-1 is likely activated after leaving the speck structure. Thus, the speck is not the NLRP3 inflammasome itself, but is instead a dynamic structure which may amplify the NLRP3 response to weak stimuli by facilitating the formation and release of small NLRP3:ASC complexes which in turn activate caspase-1.
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Affiliation(s)
- Abhinit Nagar
- Department of Immunology & Microbial Disease, Albany Medical College, Albany, NY, United States
| | - Tabassum Rahman
- Department of Immunology & Microbial Disease, Albany Medical College, Albany, NY, United States
| | - Jonathan A Harton
- Department of Immunology & Microbial Disease, Albany Medical College, Albany, NY, United States
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Wittmann N, Behrendt AK, Mishra N, Bossaller L, Meyer-Bahlburg A. Instructions for Flow Cytometric Detection of ASC Specks as a Readout of Inflammasome Activation in Human Blood. Cells 2021; 10:2880. [PMID: 34831104 PMCID: PMC8616555 DOI: 10.3390/cells10112880] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2021] [Revised: 10/14/2021] [Accepted: 10/21/2021] [Indexed: 02/06/2023] Open
Abstract
Inflammasome activation is linked to the aggregation of the adaptor protein ASC into a multiprotein complex, known as the ASC speck. Redistribution of cytosolic ASC to this complex has been widely used as a readout for inflammasome activation and precedes the downstream proteolytic release of the proinflammatory cytokines, IL-1β and IL-18. Although inflammasomes are important for many diseases such as periodic fever syndromes, COVID-19, gout, sepsis, atherosclerosis and Alzheimer's disease, only a little knowledge exists on the precise and cell type specific occurrence of inflammasome activation in patient samples ex vivo. In this report, we provide detailed information about the optimal conditions to reliably identify inflammasome activated monocytes by ASC speck formation using a modified flow cytometric method introduced by Sester et al. in 2015. Since no protocol for optimal sample processing exists, we tested human blood samples for various conditions including anticoagulant, time and temperature, the effect of one freeze-thaw cycle for PBMC storage, and the fast generation of a positive control. We believe that this flow cytometric protocol will help researchers to perform high quality translational research in multicenter studies, and therefore provide a basis for investigating the role of the inflammasome in the pathogenesis of various diseases.
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Affiliation(s)
- Nico Wittmann
- Pediatric Rheumatology, Department Pediatric and Adolescent Medicine, University Medicine, University of Greifswald, 17489 Greifswald, Germany; (N.W.); (A.-K.B.)
| | - Ann-Kathrin Behrendt
- Pediatric Rheumatology, Department Pediatric and Adolescent Medicine, University Medicine, University of Greifswald, 17489 Greifswald, Germany; (N.W.); (A.-K.B.)
| | - Neha Mishra
- Section of Rheumatology, Department of Medicine A, University Medicine, University of Greifswald, 17489 Greifswald, Germany;
| | - Lukas Bossaller
- Section of Rheumatology, Department of Medicine A, University Medicine, University of Greifswald, 17489 Greifswald, Germany;
| | - Almut Meyer-Bahlburg
- Pediatric Rheumatology, Department Pediatric and Adolescent Medicine, University Medicine, University of Greifswald, 17489 Greifswald, Germany; (N.W.); (A.-K.B.)
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30
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Li L, Mao R, Qi X. Microscopic Detection of ASC Inflammasomes in Bone Marrow Derived Macrophages Post Stimulation. Bio Protoc 2021; 11:e4151. [PMID: 34604456 DOI: 10.21769/bioprotoc.4151] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2021] [Revised: 05/12/2021] [Accepted: 07/02/2021] [Indexed: 11/02/2022] Open
Abstract
An inflammasome is an intracellular multiprotein complex that plays important roles in host defense and inflammatory responses. Inflammasomes are typically composed of the adaptor protein apoptosis-associated speck-like protein containing a CARD (ASC), cytoplasmic sensor protein, and the effector protein pro-caspase-1. ASC assembly into a protein complex termed ASC speck is a readout for inflammasome activation. Here, we provide a step-by-step protocol for the detection of ASC speck by confocal microscopy in Bone marrow derived macrophages (BMBDs) triggered by chemical stimuli and bacterial pathogens. We also describe the detailed procedure for the generation of BMDMs, stimulating conditions for inflammasome activation, immunofluorescence cell staining of ASC protein, and microscopic examination. Thus far, this method is a simple and reliable manner to visualize and quantify the intracellular localization of ASC speck. Graphic abstract: Figure 1. Confocal microscopy detection of ASC speck formation in untreated WT BMDMs and WT BMDMs stimulated with LPS and ATP, transfected with dsDNA, and infected with F. novicida or Salmonella as indicated. Arrow indicates the ASC speck. Scale bars: 10 μm.
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Affiliation(s)
- Longjun Li
- Key Laboratory of Animal Models and Human Disease Mechanisms of Chinese, Academy of Sciences/Key Laboratory of Bioactive Peptides of Yunnan Province, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, China.,Kunming College of Life Science, University of Chinese Academy of Sciences, Kunming, China
| | - Rudi Mao
- Advanced Medical Research Institute, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Xiaopeng Qi
- Key Laboratory of Animal Models and Human Disease Mechanisms of Chinese, Academy of Sciences/Key Laboratory of Bioactive Peptides of Yunnan Province, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, China.,Advanced Medical Research Institute, Cheeloo College of Medicine, Shandong University, Jinan, China
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31
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Chéneau C, Eichholz K, Tran TH, Tran TTP, Paris O, Henriquet C, Bajramovic JJ, Pugniere M, Kremer EJ. Lactoferrin Retargets Human Adenoviruses to TLR4 to Induce an Abortive NLRP3-Associated Pyroptotic Response in Human Phagocytes. Front Immunol 2021; 12:685218. [PMID: 34093588 PMCID: PMC8173049 DOI: 10.3389/fimmu.2021.685218] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2021] [Accepted: 05/05/2021] [Indexed: 12/22/2022] Open
Abstract
Despite decades of clinical and preclinical investigations, we still poorly grasp our innate immune response to human adenoviruses (HAdVs) and their vectors. In this study, we explored the impact of lactoferrin on three HAdV types that are being used as vectors for vaccines. Lactoferrin is a secreted globular glycoprotein that influences direct and indirect innate immune response against a range of pathogens following a breach in tissue homeostasis. The mechanism by which lactoferrin complexes increases HAdV uptake and induce maturation of human phagocytes is unknown. We show that lactoferrin redirects HAdV types from species B, C, and D to Toll-like receptor 4 (TLR4) cell surface complexes. TLR4-mediated internalization of the HAdV-lactoferrin complex induced an NLRP3-associated response that consisted of cytokine release and transient disruption of plasma membrane integrity, without causing cell death. These data impact our understanding of HAdV immunogenicity and may provide ways to increase the efficacy of HAdV-based vectors/vaccines.
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Affiliation(s)
- Coraline Chéneau
- Institut de Génétique Moléculaire de Montpellier, Université de Montpellier, CNRS, Montpellier, France
| | - Karsten Eichholz
- Institut de Génétique Moléculaire de Montpellier, Université de Montpellier, CNRS, Montpellier, France
| | - Tuan Hiep Tran
- Institut de Génétique Moléculaire de Montpellier, Université de Montpellier, CNRS, Montpellier, France
| | - Thi Thu Phuong Tran
- Institut de Génétique Moléculaire de Montpellier, Université de Montpellier, CNRS, Montpellier, France
| | - Océane Paris
- Institut de Génétique Moléculaire de Montpellier, Université de Montpellier, CNRS, Montpellier, France
| | - Corinne Henriquet
- Institut de Recherche en Cancérologie de Montpellier, INSERM, Université Montpellier, Institut Régional du Cancer, Montpellier, France
| | | | - Martine Pugniere
- Institut de Recherche en Cancérologie de Montpellier, INSERM, Université Montpellier, Institut Régional du Cancer, Montpellier, France
| | - Eric J Kremer
- Institut de Génétique Moléculaire de Montpellier, Université de Montpellier, CNRS, Montpellier, France
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32
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Lin HC, Chen YJ, Wei YH, Lin HA, Chen CC, Liu TF, Hsieh YL, Huang KY, Lin KH, Wang HH, Chen LC. Lactic Acid Fermentation Is Required for NLRP3 Inflammasome Activation. Front Immunol 2021; 12:630380. [PMID: 33854503 PMCID: PMC8039150 DOI: 10.3389/fimmu.2021.630380] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2020] [Accepted: 01/27/2021] [Indexed: 01/06/2023] Open
Abstract
Activation of the Nod-like receptor 3 (NLRP3) inflammasome is important for activation of innate immune responses, but improper and excessive activation can cause inflammatory disease. We previously showed that glycolysis, a metabolic pathway that converts glucose into pyruvate, is essential for NLRP3 inflammasome activation in macrophages. Here, we investigated the role of metabolic pathways downstream glycolysis - lactic acid fermentation and pyruvate oxidation-in activation of the NLRP3 inflammasome. Using pharmacological or genetic approaches, we show that decreasing lactic acid fermentation by inhibiting lactate dehydrogenase reduced caspase-1 activation and IL-1β maturation in response to various NLRP3 inflammasome agonists such as nigericin, ATP, monosodium urate (MSU) crystals, or alum, indicating that lactic acid fermentation is required for NLRP3 inflammasome activation. Inhibition of lactate dehydrogenase with GSK2837808A reduced lactate production and activity of the NLRP3 inflammasome regulator, phosphorylated protein kinase R (PKR), but did not reduce the common trigger of NLRP3 inflammasome, potassium efflux, or reactive oxygen species (ROS) production. By contrast, decreasing the activity of pyruvate oxidation by depletion of either mitochondrial pyruvate carrier 2 (MPC2) or pyruvate dehydrogenase E1 subunit alpha 1 (PDHA1) enhanced NLRP3 inflammasome activation, suggesting that inhibition of mitochondrial pyruvate transport enhanced lactic acid fermentation. Moreover, treatment with GSK2837808A reduced MSU-mediated peritonitis in mice, a disease model used for studying the consequences of NLRP3 inflammasome activation. Our results suggest that lactic acid fermentation is important for NLRP3 inflammasome activation, while pyruvate oxidation is not. Thus, reprograming pyruvate metabolism in mitochondria and in the cytoplasm should be considered as a novel strategy for the treatment of NLRP3 inflammasome-associated diseases.
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Affiliation(s)
- Hsin-Chung Lin
- Graduate Institute of Medical Sciences, National Defense Medical Center, Taipei, Taiwan.,Division of Clinical Pathology, Department of Pathology, Tri-Service General Hospital, Taipei, Taiwan
| | - Yu-Jen Chen
- Department of Radiation Oncology, MacKay Memorial Hospital, New Taipei City, Taiwan.,Department of Medical Research, MacKay Memorial Hospital, New Taipei City, Taiwan.,Department of Nursing, MacKay Junior College of Medicine, Nursing, and Management, Taipei, Taiwan
| | - Yau-Huei Wei
- Center for Mitochondrial Medicine and Free Radical Research, Changhua Christian Hospital, Changhua, Taiwan
| | - Hsin-An Lin
- Department of Medicine, Tri-Service General Hospital SongShan Branch, Taipei, Taiwan
| | - Chien-Chou Chen
- Department of Medicine, Tri-Service General Hospital SongShan Branch, Taipei, Taiwan
| | - Tze-Fan Liu
- Department of Medicine, MacKay Medical College, New Taipei City, Taiwan
| | - Yi-Lin Hsieh
- Department of Medicine, MacKay Medical College, New Taipei City, Taiwan
| | - Kuo-Yang Huang
- Graduate Institute of Pathology and Parasitology, National Defense Medical Center, Taipei, Taiwan
| | - Kuan-Hung Lin
- Institute of Biomedical Sciences, MacKay Medical College, New Taipei City, Taiwan
| | - Hsueh-Hsiao Wang
- Department of Medicine, MacKay Medical College, New Taipei City, Taiwan
| | - Lih-Chyang Chen
- Department of Medicine, MacKay Medical College, New Taipei City, Taiwan
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33
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Unterreiner A, Rubert J, Kauffmann M, Fruhauf A, Heiser D, Erbel P, Schlapbach A, Eder J, Bodendorf U, Boettcher A, Farady CJ, Bornancin F. Pharmacological inhibition of IKKβ dampens NLRP3 inflammasome activation after priming in the human myeloid cell line THP-1. Biochem Biophys Res Commun 2021; 545:177-182. [PMID: 33561652 DOI: 10.1016/j.bbrc.2021.01.051] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2021] [Accepted: 01/19/2021] [Indexed: 11/29/2022]
Abstract
The NLRP3 inflammasome is a critical component of the innate immune response to sterile inflammation. Its regulation involves a priming step, required for up-regulation of inflammasome protagonists and an activation step leading to NLRP3 inflammasome complex assembly, which triggers caspase-1 activity. The IκKβ kinase regulates canonical NF-κB, a key pathway involved in transcriptional priming. We found that IκKβ also regulates the activation and function of the NLRP3 inflammasome beyond the priming step. Two unrelated IκKβ inhibitors, AFN700 and TPCA-1, when applied after priming, fully blocked IL-1β secretion triggered by nigericin in THP-1 cells. Both inhibitors prevented neither inflammasome assembly, as monitored by measuring the formation of ASC specks, nor the generation of caspase-1 p20, a hallmark of caspase-1 activity, but they impaired the initial cleavage and activation of procaspase-1. These data thus indicate that IκKβ activity is required for efficient activation of NLRP3, suggesting that IκKβ may fulfill a dual role in coupling priming and activation of the NLRP3 inflammasome.
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Affiliation(s)
- Adeline Unterreiner
- Autoimmunity, Transplantation & Inflammation, Novartis Institutes for BioMedical Research, Novartis Campus, Basel, Switzerland
| | - Joëlle Rubert
- Autoimmunity, Transplantation & Inflammation, Novartis Institutes for BioMedical Research, Novartis Campus, Basel, Switzerland
| | - Muriel Kauffmann
- Autoimmunity, Transplantation & Inflammation, Novartis Institutes for BioMedical Research, Novartis Campus, Basel, Switzerland
| | - Alice Fruhauf
- Autoimmunity, Transplantation & Inflammation, Novartis Institutes for BioMedical Research, Novartis Campus, Basel, Switzerland
| | - Diane Heiser
- Autoimmunity, Transplantation & Inflammation, Novartis Institutes for BioMedical Research, Novartis Campus, Basel, Switzerland
| | - Paulus Erbel
- Chemical Biology & Therapeutics, Novartis Institutes for BioMedical Research, Novartis Campus, Basel, Switzerland
| | - Achim Schlapbach
- Global Discovery Chemistry, Novartis Institutes for BioMedical Research, Novartis Campus, Basel, Switzerland
| | - Jörg Eder
- Autoimmunity, Transplantation & Inflammation, Novartis Institutes for BioMedical Research, Novartis Campus, Basel, Switzerland
| | - Ursula Bodendorf
- Autoimmunity, Transplantation & Inflammation, Novartis Institutes for BioMedical Research, Novartis Campus, Basel, Switzerland
| | - Andreas Boettcher
- Autoimmunity, Transplantation & Inflammation, Novartis Institutes for BioMedical Research, Novartis Campus, Basel, Switzerland
| | - Christopher J Farady
- Autoimmunity, Transplantation & Inflammation, Novartis Institutes for BioMedical Research, Novartis Campus, Basel, Switzerland
| | - Frédéric Bornancin
- Autoimmunity, Transplantation & Inflammation, Novartis Institutes for BioMedical Research, Novartis Campus, Basel, Switzerland.
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Cui J, Oehrl S, Ahmad F, Brenner T, Uhle F, Nusshag C, Rupp C, Funck F, Meisel S, Weigand MA, Morath C, Schäkel K. Detection of In Vivo Inflammasome Activation for Predicting Sepsis Mortality. Front Immunol 2021; 11:613745. [PMID: 33613537 PMCID: PMC7889521 DOI: 10.3389/fimmu.2020.613745] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2020] [Accepted: 12/11/2020] [Indexed: 12/17/2022] Open
Abstract
Sepsis is a severe life-threatening syndrome caused by dysregulated host responses to infection. Biomarkers that allow for monitoring the patient's immune status are needed. Recently, a flow cytometry-based detection of in vivo inflammasome activation by formation of cytoplasmic aggregates of ASC (apoptosis-associated speck-like protein containing a caspase recruitment domain) has been proposed. Here we report on the frequency of ASC-speck+ leukocytes correlating with the survival of sepsis. 25 patients with sepsis were sampled consecutively for 7 days. Blood, serum samples and patient data were collected according to the guidelines of the PredARRT-Sep-Trial. Flow cytometric analysis was performed on fresh whole blood samples to investigate the formation of ASC-specks in leukocyte subsets. Serum samples were analyzed for production of IL-1ß, IL-18 and additional inflammatory markers. ASC-speck formation was found to be increased in leukocytes from sepsis patients compared to healthy donor controls. The absolute number of ASC-speck+ neutrophils peaked on day 1. For monocytes, the highest percentage and maximum absolute number of ASC-speck+ cells were detected on day 6 and day 7. Inflammatory cytokines were elevated on day 1 and declined thereafter, with exception of IL-18. Survival analysis showed that patients with lower absolute numbers of ASC-speck+ monocytes (<1,650 cells/ml) on day 6 had a lower probability to survive, with a hazard ratio (HR) of 10.178. Thus, the frequency of ASC-speck+ monocytes on day 6 after onset of sepsis may serve to identify patients at risk of death from sepsis.
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Affiliation(s)
- Jing Cui
- Department of Dermatology, Heidelberg University Hospital, Heidelberg, Germany.,Department of Dermatology, Affiliated Hospital of Guizhou Medical University, Guiyang, China
| | - Stephanie Oehrl
- Department of Dermatology, Heidelberg University Hospital, Heidelberg, Germany
| | - Fareed Ahmad
- Department of Dermatology, Heidelberg University Hospital, Heidelberg, Germany
| | - Thorsten Brenner
- Department of Anesthesiology and Intensive Care, University Hospital Essen, Essen, Germany.,Department of Anesthesiology, Heidelberg University Hospital, Heidelberg, Germany
| | - Florian Uhle
- Department of Anesthesiology, Heidelberg University Hospital, Heidelberg, Germany
| | - Christian Nusshag
- Department of Nephrology, Heidelberg University Hospital, Heidelberg, Germany
| | - Christoph Rupp
- Department of Anesthesiology, Heidelberg University Hospital, Heidelberg, Germany
| | - Felix Funck
- Department of Dermatology, Heidelberg University Hospital, Heidelberg, Germany
| | - Stefan Meisel
- Department of Dermatology, Heidelberg University Hospital, Heidelberg, Germany
| | - Markus A Weigand
- Department of Anesthesiology, Heidelberg University Hospital, Heidelberg, Germany
| | - Christian Morath
- Department of Nephrology, Heidelberg University Hospital, Heidelberg, Germany
| | - Knut Schäkel
- Department of Dermatology, Heidelberg University Hospital, Heidelberg, Germany
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Moecking J, Laohamonthonkul P, Chalker K, White MJ, Harapas CR, Yu CH, Davidson S, Hrovat-Schaale K, Hu D, Eng C, Huntsman S, Calleja DJ, Horvat JC, Hansbro PM, O'Donoghue RJJ, Ting JP, Burchard EG, Geyer M, Gerlic M, Masters SL. NLRP1 variant M1184V decreases inflammasome activation in the context of DPP9 inhibition and asthma severity. J Allergy Clin Immunol 2020; 147:2134-2145.e20. [PMID: 33378691 PMCID: PMC8168955 DOI: 10.1016/j.jaci.2020.12.636] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2020] [Revised: 12/13/2020] [Accepted: 12/17/2020] [Indexed: 02/01/2023]
Abstract
Background NLRP1 is an innate immune sensor that can form cytoplasmic inflammasome complexes. Polymorphisms in NLRP1 are linked to asthma; however, there is currently no functional or mechanistic explanation for this. Objective We sought to clarify the role of NLRP1 in asthma pathogenesis. Methods Results from the GALA II cohort study were used to identify a link between NLRP1 and asthma in Mexican Americans. In vitro and in vivo models for NLRP1 activation were applied to investigate the role of this inflammasome in asthma at the molecular level. Results We document the association of an NLRP1 haplotype with asthma for which the single nucleotide polymorphism rs11651270 (M1184V) individually is the most significant. Surprisingly, M1184V increases NLRP1 activation in the context of N-terminal destabilization, but decreases NLRP1 activation on dipeptidyl peptidase 9 inhibition. In vitro studies demonstrate that M1184V increases binding to dipeptidyl peptidase 9, which can account for its inhibitory role in this context. In addition, in vivo data from a mouse model of airway inflammation reveal a protective role for NLRP1 inflammasome activation reducing eosinophilia in this setting. Conclusions Linking our in vitro and in vivo results, we found that the NLRP1 variant M1184V reduces inflammasome activation in the context of dipeptidyl peptidase 9 inhibition and could thereby increase asthma severity. Our studies may have implications for the treatment of asthma in patients carrying this variant of NLRP1.
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Affiliation(s)
- Jonas Moecking
- Inflammation Division, The Walter and Eliza Hall Institute of Medical Research, Parkville, Australia; Department of Medical Biology, University of Melbourne, Parkville, Australia; the Institute of Structural Biology, University of Bonn, Venusberg-Campus 1, Bonn, Germany
| | - Pawat Laohamonthonkul
- Inflammation Division, The Walter and Eliza Hall Institute of Medical Research, Parkville, Australia; Department of Medical Biology, University of Melbourne, Parkville, Australia
| | - Katelyn Chalker
- Inflammation Division, The Walter and Eliza Hall Institute of Medical Research, Parkville, Australia; Department of Medical Biology, University of Melbourne, Parkville, Australia
| | - Marquitta J White
- Department of Medicine, University of California, San Francisco, Calif
| | - Cassandra R Harapas
- Inflammation Division, The Walter and Eliza Hall Institute of Medical Research, Parkville, Australia; Department of Medical Biology, University of Melbourne, Parkville, Australia
| | - Chien-Hsiung Yu
- Inflammation Division, The Walter and Eliza Hall Institute of Medical Research, Parkville, Australia; Department of Medical Biology, University of Melbourne, Parkville, Australia
| | - Sophia Davidson
- Inflammation Division, The Walter and Eliza Hall Institute of Medical Research, Parkville, Australia; Department of Medical Biology, University of Melbourne, Parkville, Australia
| | - Katja Hrovat-Schaale
- Inflammation Division, The Walter and Eliza Hall Institute of Medical Research, Parkville, Australia; Department of Medical Biology, University of Melbourne, Parkville, Australia
| | - Donglei Hu
- Department of Medicine, University of California, San Francisco, Calif
| | - Celeste Eng
- Department of Medicine, University of California, San Francisco, Calif
| | - Scott Huntsman
- Department of Medicine, University of California, San Francisco, Calif
| | - Dale J Calleja
- Inflammation Division, The Walter and Eliza Hall Institute of Medical Research, Parkville, Australia; Department of Medical Biology, University of Melbourne, Parkville, Australia
| | - Jay C Horvat
- the Priority Research Centre for Healthy Lungs, Hunter Medical Research Institute, New Lambton, Australia; University of Newcastle, Callaghan, Australia
| | - Phil M Hansbro
- the Priority Research Centre for Healthy Lungs, Hunter Medical Research Institute, New Lambton, Australia; University of Newcastle, Callaghan, Australia; Centre for Inflammation, Centenary Institute, Sydney, Australia; Faculty of Science, University of Technology Sydney, Ultimo, Australia
| | - Robert J J O'Donoghue
- Department of Pharmacology and Therapeutics, University of Melbourne, Melbourne, Australia
| | - Jenny P Ting
- Department of Microbiology and Immunology, University of North Carolina, Chapel Hill, NC
| | - Esteban G Burchard
- Department of Medicine, University of California, San Francisco, Calif; Department of Bioengineering & Therapeutic Sciences, University of California, San Francisco, San Francisco, Calif
| | - Matthias Geyer
- the Institute of Structural Biology, University of Bonn, Venusberg-Campus 1, Bonn, Germany
| | - Motti Gerlic
- Department of Clinical Microbiology and Immunology, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Seth L Masters
- Inflammation Division, The Walter and Eliza Hall Institute of Medical Research, Parkville, Australia; Department of Medical Biology, University of Melbourne, Parkville, Australia.
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36
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Zhang H, Zahid A, Ismail H, Tang Y, Jin T, Tao J. An overview of disease models for NLRP3 inflammasome over-activation. Expert Opin Drug Discov 2020; 16:429-446. [PMID: 33131335 DOI: 10.1080/17460441.2021.1844179] [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] [Indexed: 12/17/2022]
Abstract
Introduction: Inflammatory reactions, including those mediated by the NLRP3 inflammasome, maintain the body's homeostasis by removing pathogens, repairing damaged tissues, and adapting to stressed environments. However, uncontrolled activation of the NLRP3 inflammasome tends to cause various diseases using different mechanisms. Recently, many inhibitors of the NLRP3 inflammasome have been reported and many are being developed. In order to assess their efficacy, specificity, and mechanism of action, the screening process of inhibitors requires various types of cell and animal models of NLRP3-associated diseases.Areas covered: In the following review, the authors give an overview of the cell and animal models that have been used during the research and development of various inhibitors of the NLRP3 inflammasome.Expert opinion: There are many NLRP3 inflammasome inhibitors, but most of the inhibitors have poor specificity and often influence other inflammatory pathways. The potential risk for cross-reaction is high; therefore, the development of highly specific inhibitors is essential. The selection of appropriate cell and animal models, and combined use of different models for the evaluation of these inhibitors can help to clarify the target specificity and therapeutic effects, which is beneficial for the development and application of drugs targeting the NLRP3 inflammasome.
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Affiliation(s)
- Hongliang Zhang
- Department of Rheumatology and Immunology, the First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China
| | - Ayesha Zahid
- Division of Molecular Medicine, Hefei National Laboratory for Physical Sciences at Microscale, CAS Key Laboratory of Innate Immunity and Chronic Disease, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China
| | - Hazrat Ismail
- MOE Key Laboratory for Cellular Dynamics & Anhui Key Laboratory for Chemical Biology, CAS Center for Excellence in Molecular Cell Science. Hefei National Science Center for Physical Sciences at Microscale. University of Science and Technology of China, Hefei, China
| | - Yujie Tang
- Department of Rheumatology and Immunology, the First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China
| | - Tengchuan Jin
- Department of Rheumatology and Immunology, the First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China.,Division of Molecular Medicine, Hefei National Laboratory for Physical Sciences at Microscale, CAS Key Laboratory of Innate Immunity and Chronic Disease, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China.,CAS Center for Excellence in Molecular Cell Science, Shanghai, China
| | - Jinhui Tao
- Department of Rheumatology and Immunology, the First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China
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37
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NLRP3 Inflammasome Activation in Hemodialysis and Hypertensive Patients with Intact Kidney Function. Toxins (Basel) 2020; 12:toxins12110675. [PMID: 33114648 PMCID: PMC7693185 DOI: 10.3390/toxins12110675] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2020] [Revised: 10/16/2020] [Accepted: 10/22/2020] [Indexed: 12/12/2022] Open
Abstract
Hypertension is not only an integrative characteristic of hemodialysis (HD) patients but is also very common in the general population. There is evidence that the inflammatory cytokine IL-β, regulated by the NLRP3 inflammasome via caspase-1, contributes to the hypertensive setting. Therefore, we investigated in an observational pilot study whether IL-1β secretion and inflammatory cell death (pyroptosis) are different in HD and hypertensive patients with intact kidney function. Twenty HD patients were age-, gender-, and diabetes-mellitus-matched to patients with hypertension and intact kidney function. Caspase-1 activity and pyroptosis rates were measured by flow cytometry. IL-1β was determined by qPCR and the ELISA technique. The inflammatory status (CRP) did not differ between both groups; however, the body mass index, a classical cardiovascular risk factor, was significantly elevated in blood pressure (BP) patients. BP patients had a higher frequency of caspase-1-positive monocytes compared to HD (p < 0.001). IL1-β protein secretion was significantly enhanced in BP, but ex vivo stimulation of blood cells resulted in higher pyroptosis rates in HD compared to BP patients (p < 0.01). Therefore, HD and BP patients differ in the extent of the NLRP3 inflammasome activation. The consequences of overweight, present in BP patients, may contribute to the significantly higher inflammasomal induction level. Whether low pyroptotic rates are equivalent to a dysfunctional immune response or a high pyroptotic output corresponds to over-activation remains to be clarified.
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38
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Martín-Nalda A, Fortuny C, Rey L, Bunney TD, Alsina L, Esteve-Solé A, Bull D, Anton MC, Basagaña M, Casals F, Deyá A, García-Prat M, Gimeno R, Juan M, Martinez-Banaclocha H, Martinez-Garcia JJ, Mensa-Vilaró A, Rabionet R, Martin-Begue N, Rudilla F, Yagüe J, Estivill X, García-Patos V, Pujol RM, Soler-Palacín P, Katan M, Pelegrín P, Colobran R, Vicente A, Arostegui JI. Severe Autoinflammatory Manifestations and Antibody Deficiency Due to Novel Hypermorphic PLCG2 Mutations. J Clin Immunol 2020; 40:987-1000. [PMID: 32671674 PMCID: PMC7505877 DOI: 10.1007/s10875-020-00794-7] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2020] [Accepted: 05/20/2020] [Indexed: 01/28/2023]
Abstract
Autoinflammatory diseases (AIDs) were first described as clinical disorders characterized by recurrent episodes of seemingly unprovoked sterile inflammation. In the past few years, the identification of novel AIDs expanded their phenotypes toward more complex clinical pictures associating vasculopathy, autoimmunity, or immunodeficiency. Herein, we describe two unrelated patients suffering since the neonatal period from a complex disease mainly characterized by severe sterile inflammation, recurrent bacterial infections, and marked humoral immunodeficiency. Whole-exome sequencing detected a novel, de novo heterozygous PLCG2 variant in each patient (p.Ala708Pro and p.Leu845_Leu848del). A clear enhanced PLCγ2 activity for both variants was demonstrated by both ex vivo calcium responses of the patient's B cells to IgM stimulation and in vitro assessment of PLC activity. These data supported the autoinflammation and PLCγ2-associated antibody deficiency and immune dysregulation (APLAID) diagnosis in both patients. Immunological evaluation revealed a severe decrease of immunoglobulins and B cells, especially class-switched memory B cells, with normal T and NK cell counts. Analysis of bone marrow of one patient revealed a reduced immature B cell fraction compared with controls. Additional investigations showed that both PLCG2 variants activate the NLRP3-inflammasome through the alternative pathway instead of the canonical pathway. Collectively, the evidences here shown expand APLAID diversity toward more severe phenotypes than previously reported including dominantly inherited agammaglobulinemia, add novel data about its genetic basis, and implicate the alternative NLRP3-inflammasome activation pathway in the basis of sterile inflammation.
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Affiliation(s)
- Andrea Martín-Nalda
- Pediatric Infectious Diseases and Immunodeficiencies Unit, Vall d'Hebron Institut de Recerca, Hospital Universitari Vall d'Hebron, Barcelona, Spain
- Jeffrey Modell Diagnostic and Research Center for Primary Immunodeficiencies, Barcelona, Spain
| | - Claudia Fortuny
- Pediatric Infectious Diseases and Immunodeficiencies Unit, Vall d'Hebron Institut de Recerca, Hospital Universitari Vall d'Hebron, Barcelona, Spain
- Department of Pediatrics, Hospital Sant Joan de Deu, Esplugues, Spain
- Institut de Recerca Hospital Sant Joan de Déu, Universitat de Barcelona, Esplugues, Spain
| | - Lourdes Rey
- Department of Pediatrics, Hospital Alvaro Cunqueiro, Vigo, Spain
| | - Tom D Bunney
- Institute of Structural and Molecular Biology, University College London, London, UK
| | - Laia Alsina
- Institut de Recerca Hospital Sant Joan de Déu, Universitat de Barcelona, Esplugues, Spain
- Department of Allergy and Clinical Immunology Clinical Immunology and Primary, Immunodeficiencies Unit, Hospital Sant Joan de Déu, Esplugues, Spain
- Clinical Immunology Unit, Hospital Sant Joan de Déu-Hospital Clínic, Barcelona, Spain
| | - Ana Esteve-Solé
- Institut de Recerca Hospital Sant Joan de Déu, Universitat de Barcelona, Esplugues, Spain
- Department of Allergy and Clinical Immunology Clinical Immunology and Primary, Immunodeficiencies Unit, Hospital Sant Joan de Déu, Esplugues, Spain
- Clinical Immunology Unit, Hospital Sant Joan de Déu-Hospital Clínic, Barcelona, Spain
| | - Daniel Bull
- ARUK Drug Discovery Institute, University College London, London, UK
| | - Maria Carmen Anton
- Department of Immunology-CDB (esc 4-pl 0), Hospital Clínic, Villarroel, 170, 08036, Barcelona, Spain
| | - María Basagaña
- Allergy Section, Hospital Universitari Germans Trias i Pujol, Autonomous University of Barcelona, Badalona, Spain
| | - Ferran Casals
- Genomics Core Facility, Experimental and Health Sciences Department, Universitat Pompeu Fabra, Barcelona, Spain
| | - Angela Deyá
- Institut de Recerca Hospital Sant Joan de Déu, Universitat de Barcelona, Esplugues, Spain
- Department of Allergy and Clinical Immunology Clinical Immunology and Primary, Immunodeficiencies Unit, Hospital Sant Joan de Déu, Esplugues, Spain
- Clinical Immunology Unit, Hospital Sant Joan de Déu-Hospital Clínic, Barcelona, Spain
| | - Marina García-Prat
- Pediatric Infectious Diseases and Immunodeficiencies Unit, Vall d'Hebron Institut de Recerca, Hospital Universitari Vall d'Hebron, Barcelona, Spain
- Jeffrey Modell Diagnostic and Research Center for Primary Immunodeficiencies, Barcelona, Spain
| | - Ramon Gimeno
- Department of Immunology, Hospital del Mar, Institut Mar d'Investigacions Mèdiques, Barcelona, Spain
| | - Manel Juan
- Department of Immunology-CDB (esc 4-pl 0), Hospital Clínic, Villarroel, 170, 08036, Barcelona, Spain
- Institut d'Investigacions Biomèdiques August Pi i Sunyer, Barcelona, Spain
- School of Medicine, Universitat de Barcelona, Barcelona, Spain
| | - Helios Martinez-Banaclocha
- Instituto Murciano de Investigación Biosanitaria IMIB-Arrixaca, Hospital Clínico Universitario Virgen de la Arrixaca, Murcia, Spain
| | - Juan J Martinez-Garcia
- Instituto Murciano de Investigación Biosanitaria IMIB-Arrixaca, Hospital Clínico Universitario Virgen de la Arrixaca, Murcia, Spain
| | - Anna Mensa-Vilaró
- Department of Immunology-CDB (esc 4-pl 0), Hospital Clínic, Villarroel, 170, 08036, Barcelona, Spain
| | - Raquel Rabionet
- Institut de Recerca Hospital Sant Joan de Déu, Universitat de Barcelona, Esplugues, Spain
- Department of Genetics, Microbiology and Statistics, Faculty of Biology, University of Barcelona, IBUB, IRJSD, CIBERER, Barcelona, Spain
| | - Nieves Martin-Begue
- Department of Pediatric Ophthalmology, Hospital Universitari Vall d'Hebron, Vall d'Hebron Institut de Recerca, Barcelona, Spain
| | - Francesc Rudilla
- Histocompatibility and Immunogenetics Laboratory, Blood and Tissue Bank, Barcelona, Spain
- Transfusional Medicine Group, Vall d'Hebron Research Institute, Autonomous University of Barcelona, Barcelona, Spain
| | - Jordi Yagüe
- Department of Immunology-CDB (esc 4-pl 0), Hospital Clínic, Villarroel, 170, 08036, Barcelona, Spain
- Institut d'Investigacions Biomèdiques August Pi i Sunyer, Barcelona, Spain
- School of Medicine, Universitat de Barcelona, Barcelona, Spain
| | - Xavier Estivill
- Quantitative Genomic Medicine Laboratories (qGenomics), Esplugues del Llobregat, Barcelona, Catalonia, Spain
| | - Vicente García-Patos
- Department of Pediatric Dermatology, Hospital Universitari Vall d'Hebron, Vall d'Hebron Institut de Recerca, Barcelona, Spain
| | - Ramon M Pujol
- Department of Dermatology, Hospital del Mar, Institut Mar d'Investigacions Mèdiques, Universitat Autonoma de Barcelona, Barcelona, Spain
| | - Pere Soler-Palacín
- Pediatric Infectious Diseases and Immunodeficiencies Unit, Vall d'Hebron Institut de Recerca, Hospital Universitari Vall d'Hebron, Barcelona, Spain
- Jeffrey Modell Diagnostic and Research Center for Primary Immunodeficiencies, Barcelona, Spain
- Universitat Autonoma de Barcelona, Barcelona, Spain
| | - Matilda Katan
- Institute of Structural and Molecular Biology, University College London, London, UK
| | - Pablo Pelegrín
- Instituto Murciano de Investigación Biosanitaria IMIB-Arrixaca, Hospital Clínico Universitario Virgen de la Arrixaca, Murcia, Spain
| | - Roger Colobran
- Jeffrey Modell Diagnostic and Research Center for Primary Immunodeficiencies, Barcelona, Spain
- Immunology Division, Department of Clinical and Molecular Genetics, Hospital Universitari Vall d'Hebron, Vall d'Hebron Research Institute, Barcelona, Spain
- Department of Cell Biology, Physiology and Immunology, Autonomous University of Barcelona, Barcelona, Spain
| | - Asun Vicente
- Department of Pediatric Dermatology, Hospital Sant Joan de Deu, Esplugues, Spain
| | - Juan I Arostegui
- Department of Immunology-CDB (esc 4-pl 0), Hospital Clínic, Villarroel, 170, 08036, Barcelona, Spain.
- Institut d'Investigacions Biomèdiques August Pi i Sunyer, Barcelona, Spain.
- School of Medicine, Universitat de Barcelona, Barcelona, Spain.
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Wang W, Tan J, Wang Z, Zhang Y, Liu Q, Yang D. Characterization of the inflammasome component SmASC in turbot (Scophthalmus maximus). FISH & SHELLFISH IMMUNOLOGY 2020; 100:324-333. [PMID: 32198069 DOI: 10.1016/j.fsi.2020.03.032] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/25/2019] [Revised: 02/29/2020] [Accepted: 03/16/2020] [Indexed: 06/10/2023]
Abstract
Apoptosis-associated speck-like protein containing a C-terminal caspase recruit domain (ASC) is an important adapter protein in the inflammasome complex that mediates inflammatory caspase activation and host innate immunity in mammals. However, the function of inflammasome components in lower vertebrate remains poorly understood. In this study, full length of SmASC was cloned from turbot (Scophthalmus maximus). Through bioinformatic analysis, we found that SmASC shares relatively high identity with ASC in bony fish. Furthermore, we found that the intact SmASC can form an oligomeric speck-like structure, while the PYD segment of SmASC can form the filamentous structure. Moreover, expression of SmASC was induced after intraperitoneal injection of Edwardsiella piscicida (E. piscicida) in vivo. To further explore the role of SmASC during infection, we constructed SmASC knockdown and overexpression models by administration of siRNA and overexpression plasmids in vivo, respectively. Expression of SmASC decreased the propagation of E. piscicida in different immune organs. In summary, our results characterize the function of SmASC in S. maximus, suggesting that the SmASC plays a critical role in turbot immune responses.
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Affiliation(s)
- Wenhui Wang
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai, 200237, China
| | - Jinchao Tan
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai, 200237, China
| | - Zhuang Wang
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai, 200237, China
| | - Yuanxing Zhang
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai, 200237, China; Shanghai Engineering Research Center of Maricultured Animal Vaccines, Shanghai, 200237, China
| | - Qin Liu
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai, 200237, China; Shanghai Engineering Research Center of Maricultured Animal Vaccines, Shanghai, 200237, China
| | - Dahai Yang
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai, 200237, China; Shanghai Engineering Research Center of Maricultured Animal Vaccines, Shanghai, 200237, China.
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40
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Detection of Inflammasome Activation by P2X7 Purinoceptor Activation by Determining ASC Oligomerization. Methods Mol Biol 2020; 2041:335-343. [PMID: 31646501 DOI: 10.1007/978-1-4939-9717-6_25] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
The purinoceptor P2X7 is highly expressed in cells of the innate immune system, including monocytes and macrophages. Its activation is a potent signal to activate the NLRP3 inflammasome and induce the release of proinflammatory cytokines of the IL-1 family. In this chapter, we present a method to monitor NLRP3 inflammasome activation in human monocytes upon P2X7 receptor stimulation by detecting intracellular oligomers of ASC by flow cytometry. This method could be used to evaluate the degree of inflammasome activation in blood samples from patients suffering different chronic inflammatory diseases.
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41
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Schwarz N, Junge M, Haag F, Koch-Nolte F. Flow Cytometry of Membrane Purinoreceptors. Methods Mol Biol 2020; 2041:117-136. [PMID: 31646484 DOI: 10.1007/978-1-4939-9717-6_8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Mammalian purinoreceptors respond to extracellular nucleotides and their metabolites, for example, following the release of ATP or NAD+ from cells and their hydrolysis by ectonucleotidases. Membrane purinoreceptors are expressed as ionotropic ligand-gated ion channels designated P2X receptors, or as metabotropic G-protein coupled receptors designated P1 or P2Y receptors, on the cell surface of different cell types. In this chapter, we provide protocols to monitor the expression and activity of purinoreceptors on the cell membrane of living cells by flow cytometry.
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Affiliation(s)
- Nicole Schwarz
- Institute of Immunology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Marten Junge
- Institute of Immunology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Friedrich Haag
- Institute of Immunology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Friedrich Koch-Nolte
- Institute of Immunology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany.
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42
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Ruiz-Alcaraz AJ, Martínez-Banaclocha H, Marín-Sánchez P, Carmona-Martínez V, Iniesta-Albadalejo MA, Tristán-Manzano M, Tapia-Abellán A, García-Peñarrubia P, Machado-Linde F, Pelegrín P, Martínez-Esparza M. Isolation of functional mature peritoneal macrophages from healthy humans. Immunol Cell Biol 2020; 98:114-126. [PMID: 31709677 DOI: 10.1111/imcb.12305] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2019] [Revised: 10/29/2019] [Accepted: 11/06/2019] [Indexed: 12/12/2022]
Abstract
Macrophages play an important role in the inflammatory response. Their various biological functions are induced by different membrane receptors, including Toll-like receptors, which trigger several intracellular signaling cascades and activate the inflammasomes, which in turn elicit the release of inflammatory mediators such as cytokines. In this study, we present a novel method for the isolation of human mature peritoneal macrophages. This method can be easily implemented by gynecologists who routinely perform laparoscopy for sterilization by tubal ligation or surgically intervene in benign gynecological pathologies. Our method confirms that macrophages are the main peritoneal leukocyte subpopulation isolated from the human peritoneum in homeostasis. We showed that primary human peritoneal macrophages present phagocytic and oxidative activities, and respond to activation of the main proinflammatory pathways such as Toll-like receptors and inflammasomes, resulting in the secretion of different proinflammatory cytokines. Therefore, this method provides a useful tool for characterizing primary human macrophages as control cells for studies of molecular inflammatory pathways in steady-state conditions and for comparing them with those obtained from pathologies involving the peritoneal cavity. Furthermore, it will facilitate advances in the screening of anti-inflammatory compounds in the human system.
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Affiliation(s)
- Antonio J Ruiz-Alcaraz
- Departamento de Bioquímica, Biología Molecular (B) e Inmunología, Facultad de Medicina, IMIB-Arrixaca and Regional Campus of International Excellence "Campus Mare Nostrum", Universidad de Murcia, Murcia, Spain
| | - Helios Martínez-Banaclocha
- Biomedical Research Institute of Murcia (IMIB-Arrixaca), Hospital Clínico Universitario Virgen de la Arrixaca, Murcia, Spain
| | - Pilar Marín-Sánchez
- Servicio de Ginecología y Obstetricia, Hospital Clínico Universitario Virgen de la Arrixaca, IMIB-Arrixaca, Murcia, Spain
| | - Violeta Carmona-Martínez
- Departamento de Bioquímica, Biología Molecular (B) e Inmunología, Facultad de Medicina, IMIB-Arrixaca and Regional Campus of International Excellence "Campus Mare Nostrum", Universidad de Murcia, Murcia, Spain
| | | | - María Tristán-Manzano
- Departamento de Bioquímica, Biología Molecular (B) e Inmunología, Facultad de Medicina, IMIB-Arrixaca and Regional Campus of International Excellence "Campus Mare Nostrum", Universidad de Murcia, Murcia, Spain
| | - Ana Tapia-Abellán
- Departamento de Bioquímica, Biología Molecular (B) e Inmunología, Facultad de Medicina, IMIB-Arrixaca and Regional Campus of International Excellence "Campus Mare Nostrum", Universidad de Murcia, Murcia, Spain
- Biomedical Research Institute of Murcia (IMIB-Arrixaca), Hospital Clínico Universitario Virgen de la Arrixaca, Murcia, Spain
| | - Pilar García-Peñarrubia
- Departamento de Bioquímica, Biología Molecular (B) e Inmunología, Facultad de Medicina, IMIB-Arrixaca and Regional Campus of International Excellence "Campus Mare Nostrum", Universidad de Murcia, Murcia, Spain
| | - Francisco Machado-Linde
- Servicio de Ginecología y Obstetricia, Hospital General Reina Sofía, IMIB-Arrixaca, Murcia, Spain
| | - Pablo Pelegrín
- Biomedical Research Institute of Murcia (IMIB-Arrixaca), Hospital Clínico Universitario Virgen de la Arrixaca, Murcia, Spain
| | - María Martínez-Esparza
- Departamento de Bioquímica, Biología Molecular (B) e Inmunología, Facultad de Medicina, IMIB-Arrixaca and Regional Campus of International Excellence "Campus Mare Nostrum", Universidad de Murcia, Murcia, Spain
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Ma J, Ramachandran M, Jin C, Quijano-Rubio C, Martikainen M, Yu D, Essand M. Characterization of virus-mediated immunogenic cancer cell death and the consequences for oncolytic virus-based immunotherapy of cancer. Cell Death Dis 2020; 11:48. [PMID: 31969562 PMCID: PMC6976683 DOI: 10.1038/s41419-020-2236-3] [Citation(s) in RCA: 96] [Impact Index Per Article: 24.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2019] [Revised: 11/07/2019] [Accepted: 11/11/2019] [Indexed: 12/14/2022]
Abstract
Oncolytic viruses have the potential to induce immunogenic cell death (ICD) that may provoke potent and long-lasting anti-cancer immunity. Here we aimed to characterize the ICD-inducing ability of wild-type Adenovirus (Ad), Semliki Forest virus (SFV) and Vaccinia virus (VV). We did so by investigating the cell death and immune-activating properties of virus-killed tumor cells. Ad-infection of tumor cells primarily activates autophagy, but also activate events of necroptotic and pyroptotic cell death. SFV infection on the other hand primarily activates immunogenic apoptosis while VV activates necroptosis. All viruses mediated lysis of tumor cells leading to the release of danger-associated molecular patterns, triggering of phagocytosis and maturation of dendritic cells (DCs). However, only SFV-infected tumor cells triggered significant T helper type 1 (Th1)-cytokine release by DCs and induced antigen-specific T-cell activation. Our results elucidate cell death processes activated upon Ad, SFV, and VV infection and their potential to induce T cell-mediated anti-tumor immune responses. This knowledge provides important insight for the choice and design of therapeutically successful virus-based immunotherapies.
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Affiliation(s)
- Jing Ma
- Department of Immunology, Genetics and Pathology, Science for Life Laboratory, Uppsala University, 75185, Uppsala, Sweden
| | - Mohanraj Ramachandran
- Department of Immunology, Genetics and Pathology, Science for Life Laboratory, Uppsala University, 75185, Uppsala, Sweden
| | - Chuan Jin
- Department of Immunology, Genetics and Pathology, Science for Life Laboratory, Uppsala University, 75185, Uppsala, Sweden
| | - Clara Quijano-Rubio
- Department of Immunology, Genetics and Pathology, Science for Life Laboratory, Uppsala University, 75185, Uppsala, Sweden.,Laboratory of Molecular Neuro-Oncology, Department of Neurology, University Hospital and University of Zurich, 8091, Zurich, Switzerland
| | - Miika Martikainen
- Department of Immunology, Genetics and Pathology, Science for Life Laboratory, Uppsala University, 75185, Uppsala, Sweden
| | - Di Yu
- Department of Immunology, Genetics and Pathology, Science for Life Laboratory, Uppsala University, 75185, Uppsala, Sweden.
| | - Magnus Essand
- Department of Immunology, Genetics and Pathology, Science for Life Laboratory, Uppsala University, 75185, Uppsala, Sweden.
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44
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Chung IC, Chen LC, Tsang NM, Chuang WY, Liao TC, Yuan SN, OuYang CN, Ojcius DM, Wu CC, Chang YS. Mitochondrial Oxidative Phosphorylation Complex Regulates NLRP3 Inflammasome Activation and Predicts Patient Survival in Nasopharyngeal Carcinoma. Mol Cell Proteomics 2020; 19:142-154. [PMID: 31723016 PMCID: PMC6944234 DOI: 10.1074/mcp.ra119.001808] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2019] [Revised: 11/01/2019] [Indexed: 12/19/2022] Open
Abstract
We previously reported that tumor inflammasomes play a key role in tumor control and act as favorable prognostic markers in nasopharyngeal carcinoma (NPC). Activated inflammasomes frequently form distinguishable specks and govern the cellular secretion of IL-1β. However, we know little about the biological and biochemical differences between cells with and without apoptosis-associated speck-like protein containing a caspase-recruitment domain (ASC) speck formation. In this study, we used proteomic iTRAQ analysis to analyze the proteomes of NPC cells that differ in their ASC speck formation upon cisplatin treatment. We identified proteins that were differentially over-expressed in cells with specks, and found that they fell into two Gene ontology (GO) pathways: mitochondrial oxidative phosphorylation (OxPhos) and ubiquinone metabolism. We observed up-regulation of various components of the OxPhos machinery (including NDUFB3, NDUFB8 and ATP5B), and subsequently found that these changes lead to mitochondrial ROS (mtROS) production, which promotes the formation and activation of NLRP3 inflammasomes and subsequent pyroptosis. In NPC patients, better local recurrence-free survival was significantly associated with high-level expression of NDUFB8 (p = 0.037) and ATP5B (p = 0.029), as examined using immunohistochemistry. However, there were no significant associations between the expression of NDUFB8 and ATP5B with overall survival of NPC patients. Together, our results demonstrate that up-regulated mitochondrial OxPhos components are strongly associated with NLRP3 inflammasome activation in NPC. Our findings further suggest that high-level expression of OxPhos components could be markers for local recurrence and/or promising therapeutic targets in patients with NPC.
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Affiliation(s)
- I-Che Chung
- Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University, Taoyuan, Taiwan; Molecular Medicine Research Center, Chang Gung University, Taoyuan, Taiwan
| | - Lih-Chyang Chen
- Department of Medicine, Mackay Medical College, New Taipei City 252, Taiwan
| | - Ngan-Ming Tsang
- Department of Radiation Oncology, Chang Gung Memorial Hospital, Linkou, Taoyuan, Taiwan; Department of Traditional Chinese Medicine, Chang Gung University, Taoyuan, Taiwan
| | - Wen-Yu Chuang
- Department of Pathology, Chang Gung Memorial Hospital, Linkou, and Chang Gung University College of Medicine, Taoyuan, Taiwan
| | - Tzu-Chieh Liao
- Department of Biomedical Sciences, Chang Gung University, Taoyuan, Taiwan
| | - Sheng-Ning Yuan
- Molecular Medicine Research Center, Chang Gung University, Taoyuan, Taiwan
| | - Chun-Nan OuYang
- Molecular Medicine Research Center, Chang Gung University, Taoyuan, Taiwan
| | - David M Ojcius
- Department of Biomedical Sciences, University of the Pacific, San Francisco, California 94103; Center for Molecular and Clinical Immunology, Chang Gung University, Taoyuan, Taiwan; Chang Gung Immunology Consortium, Chang Gung Memorial Hospital, Linkou, Taoyuan, Taiwan
| | - Chih-Ching Wu
- Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University, Taoyuan, Taiwan; Department of Medical Biotechnology and Laboratory Science, College of Medicine, Chang Gung University, Taoyuan, Taiwan; Research Center for Emerging Viral Infections, College of Medicine, Chang Gung University, Taoyuan City 333, Taiwan; Department of Otolaryngology - Head & Neck Surgery, Chang Gung Memorial Hospital, Linkou, Taoyuan, Taiwan.
| | - Yu-Sun Chang
- Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University, Taoyuan, Taiwan; Molecular Medicine Research Center, Chang Gung University, Taoyuan, Taiwan; Department of Otolaryngology - Head & Neck Surgery, Chang Gung Memorial Hospital, Linkou, Taoyuan, Taiwan.
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45
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O'Carroll A, Coyle J, Gambin Y. Prions and Prion-like assemblies in neurodegeneration and immunity: The emergence of universal mechanisms across health and disease. Semin Cell Dev Biol 2019; 99:115-130. [PMID: 31818518 DOI: 10.1016/j.semcdb.2019.11.012] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2019] [Accepted: 11/22/2019] [Indexed: 02/07/2023]
Abstract
Prion-like behaviour is an abrupt process, an "all-or-nothing" transition between a monomeric species and an "infinite" fibrillated form. Once a nucleation point is formed, the process is unstoppable as fibrils self-propagate by recruiting and converting all monomers into the amyloid fold. After the "mad cow" episode, prion diseases have made the headlines, but more and more prion-like behaviours have emerged in neurodegenerative diseases, where formation of fibrils and large conglomerates of proteins deeply disrupt the cell homeostasis. More interestingly, in the last decade, examples emerged to suggest that prion-like conversion can be used as a positive gain of function, for memory storage or structural scaffolding. More recent experiments show that we are only seeing the tip of the iceberg and that, for example, prion-like amplification is found in many pathways of the immune response. In innate immunity, receptors on the cellular surface or within the cells 'sense' danger and propagate this information as signal, through protein-protein interactions (PPIs) between 'receptor', 'adaptor' and 'effector' proteins. In innate immunity, the smallest signal of a foreign element or pathogen needs to trigger a macroscopic signal output, and it was found that adaptor polymerize to create an extreme signal amplification. Interestingly, our body uses multiple structural motifs to create large signalling platform; a few innate proteins use amyloid scaffolds but most of the polymers discovered are composed by self-assembly in helical filaments. Some of these helical assemblies even have intercellular "contamination" in a "true" prion action, as demonstrated for ASC specks and MyD88 filaments. Here, we will describe the current knowledge in neurodegenerative diseases and innate immunity and show how these two very different fields can cross-seed discoveries.
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Affiliation(s)
- Ailis O'Carroll
- EMBL Australia Node in Single Molecule Sciences, and School of Medical Sciences, Faculty of Edicine, The University of New South Wales, Sydney, Australia
| | - Joanne Coyle
- EMBL Australia Node in Single Molecule Sciences, and School of Medical Sciences, Faculty of Edicine, The University of New South Wales, Sydney, Australia
| | - Yann Gambin
- EMBL Australia Node in Single Molecule Sciences, and School of Medical Sciences, Faculty of Edicine, The University of New South Wales, Sydney, Australia.
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Coulon PG, Dhanushkodi N, Prakash S, Srivastava R, Roy S, Alomari NI, Nguyen AM, Warsi WR, Ye C, Carlos-Cruz EA, Mai UT, Cruel AC, Ekmekciyan KM, Pearlman E, BenMohamed L. NLRP3, NLRP12, and IFI16 Inflammasomes Induction and Caspase-1 Activation Triggered by Virulent HSV-1 Strains Are Associated With Severe Corneal Inflammatory Herpetic Disease. Front Immunol 2019; 10:1631. [PMID: 31367214 PMCID: PMC6644090 DOI: 10.3389/fimmu.2019.01631] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2019] [Accepted: 07/01/2019] [Indexed: 12/15/2022] Open
Abstract
The crosstalk between the host's inflammasome system and the invading virulent/less-virulent viruses determines the outcome of the ensuing inflammatory response. An appropriate activation of inflammasomes triggers antiviral inflammatory responses that clear the virus and heal the inflamed tissue. However, an aberrant activation of inflammasomes can result in a harmful and overwhelming inflammation that could damage the infected tissue. The underlying host's immune mechanisms and the viral virulent factors that impact severe clinical inflammatory disease remain to be fully elucidated. In this study, we used herpes simplex virus type 1 (HSV-1), the causative agent of corneal inflammatory herpetic disease, as a model pathogen to determine: (i) Whether and how the virulence of a virus affects the type and the activation level of the inflammasomes; and (ii) How triggering specific inflammasomes translates into protective or damaging inflammatory response. We showed that, in contrast to the less-virulent HSV-1 strains (RE, F, KOS, and KOS63), corneal infection of B6 mice with the virulent HSV-1 strains (McKrae, 17 or KOS79): (i) Induced simultaneous expression of the NLRP3, NLRP12, and IFI16 inflammasomes; (ii) Increased production of the biologically active Caspase-1 and pro-inflammatory cytokines IL-1β and IL-18; (iii) Heightened recruitment into the inflamed cornea of CD45highLy6C+Ly6G-F4/80+CD11b+CD11c- inflammatory monocytes and CD45highCD11b+F4/80-Ly6GhiLy6Cmed neutrophils; and (iv) This intensified inflammatory response was associated with a severe corneal herpetic disease, irrespective of the level of virus replication in the cornea. Similarly, in vitro infection of human corneal epithelial cells and human monocytic THP-1 cells with the virulent HSV-1 strains triggered a synchronized early expression of NLRP3, NLRP12 and IFI16, 2 h post-infection, associated with formation of single and dense specks of the adapter molecule ASC in HSV(+) cells, but not in the neighboring bystander HSV(-) cells. This was associated with increased cleavages of Caspase-1, IL-1β, and IL-18. These findings suggest a previously unappreciated role of viral virulence in a synchronized early induction of the NLRP3, NLRP12, and IFI16 inflammasomes that lead to a damaging inflammatory response. A potential role of common virus virulent factors that stimulate this harmful inflammatory corneal disease is currently under investigation.
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Affiliation(s)
- Pierre-Gregoire Coulon
- Laboratory of Cellular and Molecular Immunology, School of Medicine, Gavin Herbert Eye Institute, University of California, Irvine, Irvine, CA, United States
| | - Nisha Dhanushkodi
- Laboratory of Cellular and Molecular Immunology, School of Medicine, Gavin Herbert Eye Institute, University of California, Irvine, Irvine, CA, United States
| | - Swayam Prakash
- Laboratory of Cellular and Molecular Immunology, School of Medicine, Gavin Herbert Eye Institute, University of California, Irvine, Irvine, CA, United States
| | - Ruchi Srivastava
- Laboratory of Cellular and Molecular Immunology, School of Medicine, Gavin Herbert Eye Institute, University of California, Irvine, Irvine, CA, United States
| | - Soumyabrata Roy
- Laboratory of Cellular and Molecular Immunology, School of Medicine, Gavin Herbert Eye Institute, University of California, Irvine, Irvine, CA, United States
| | - Nuha I. Alomari
- Laboratory of Cellular and Molecular Immunology, School of Medicine, Gavin Herbert Eye Institute, University of California, Irvine, Irvine, CA, United States
| | - Angela M. Nguyen
- Laboratory of Cellular and Molecular Immunology, School of Medicine, Gavin Herbert Eye Institute, University of California, Irvine, Irvine, CA, United States
| | - Wasay R. Warsi
- Laboratory of Cellular and Molecular Immunology, School of Medicine, Gavin Herbert Eye Institute, University of California, Irvine, Irvine, CA, United States
| | - Caitlin Ye
- Laboratory of Cellular and Molecular Immunology, School of Medicine, Gavin Herbert Eye Institute, University of California, Irvine, Irvine, CA, United States
| | - Edgar A. Carlos-Cruz
- Laboratory of Cellular and Molecular Immunology, School of Medicine, Gavin Herbert Eye Institute, University of California, Irvine, Irvine, CA, United States
| | - Uyen T. Mai
- Laboratory of Cellular and Molecular Immunology, School of Medicine, Gavin Herbert Eye Institute, University of California, Irvine, Irvine, CA, United States
| | - Audrey C. Cruel
- Laboratory of Cellular and Molecular Immunology, School of Medicine, Gavin Herbert Eye Institute, University of California, Irvine, Irvine, CA, United States
| | - Keysi M. Ekmekciyan
- Laboratory of Cellular and Molecular Immunology, School of Medicine, Gavin Herbert Eye Institute, University of California, Irvine, Irvine, CA, United States
| | - Eric Pearlman
- Laboratory of Cellular and Molecular Immunology, School of Medicine, Gavin Herbert Eye Institute, University of California, Irvine, Irvine, CA, United States
- School of Medicine, Institute for Immunology, University of California, Irvine, Irvine, CA, United States
| | - Lbachir BenMohamed
- Laboratory of Cellular and Molecular Immunology, School of Medicine, Gavin Herbert Eye Institute, University of California, Irvine, Irvine, CA, United States
- School of Medicine, Institute for Immunology, University of California, Irvine, Irvine, CA, United States
- Department of Molecular Biology and Biochemistry, School of Medicine, University of California, Irvine, Irvine, CA, United States
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47
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Lage SL, Dominical VM, Wong CS, Sereti I. Evaluation of Canonical Inflammasome Activation in Human Monocytes by Imaging Flow Cytometry. Front Immunol 2019; 10:1284. [PMID: 31214205 PMCID: PMC6558012 DOI: 10.3389/fimmu.2019.01284] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2018] [Accepted: 05/20/2019] [Indexed: 12/19/2022] Open
Abstract
Canonical inflammasome activation is a tightly regulated process that has been implicated in a broad spectrum of inflammatory disorders. Inflammasome formation requires assembly of a cytosolic sensor protein with the adapter, ASC (apoptosis-associated speck-like protein containing a caspase activating and recruitment domain). Once formed, this multimeric protein structure allows for the activation of caspase-1, responsible for IL-1ß/IL-18 release. During this process, cytoplasmic dispersed ASC molecules cluster in one condensed micrometric-sized complex named ASC “speck,” which is traditionally assessed by fluorescence microscopy and widely accepted as a readout for canonical inflammasome activation. However, equally reliable but less time-consuming quantitative methods have emerged as a significant need in order to improve clinical assessment of inflammasome-related conditions. Multispectral imaging flow cytometry (MIFC) combines the qualitative power of fluorescence microscopy with high throughput capabilities and multiplexing potential of flow cytometry into one single system. Here we explored the optimal imaging-based tools to measure ASC speck formation via imaging flow cytometry by using peripheral blood mononuclear cells (PBMCs) stimulated with the NLRP3 agonist Nigericin, as a positive control. We demonstrate that this technique is also able to detect the distribution of active caspase-1 within the ASC aggregates by incubating cells with FAM-FLICATM, a fluorochrome inhibitor of caspase-1. By applying these tools in PBMCs from patients with distinct inflammatory disorders we demonstrate that MIFC is able to assess canonical inflammasome activation in a quantitative and statistically robust manner in clinically relevant samples. Therefore, we propose that accurate assessment of specks by MIFC could help guide preventive or therapeutic strategies in an array of human inflammatory diseases in which inflammasomes play an important role.
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Affiliation(s)
- Silvia Lucena Lage
- National Institute of Allergy and Infectious Diseases, Bethesda, MD, United States
| | - Venina Marcela Dominical
- Flow Cytometry Core Facility, National Heart, Lung, and Blood Institute, Bethesda, MD, United States
| | - Chun-Shu Wong
- National Institute of Allergy and Infectious Diseases, Bethesda, MD, United States
| | - Irini Sereti
- National Institute of Allergy and Infectious Diseases, Bethesda, MD, United States
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48
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Tapia-Abellán A, Angosto-Bazarra D, Martínez-Banaclocha H, de Torre-Minguela C, Cerón-Carrasco JP, Pérez-Sánchez H, Arostegui JI, Pelegrin P. MCC950 closes the active conformation of NLRP3 to an inactive state. Nat Chem Biol 2019; 15:560-564. [PMID: 31086329 PMCID: PMC7116292 DOI: 10.1038/s41589-019-0278-6] [Citation(s) in RCA: 264] [Impact Index Per Article: 52.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2018] [Accepted: 03/22/2019] [Indexed: 11/08/2022]
Abstract
NLRP3 (NOD-like receptor pyrin domain-containing protein 3) is an innate immune sensor that contributes to the development of different diseases, including monogenic autoinflammatory syndromes, gout, atherosclerosis, and Alzheimer's disease. The molecule sulfonylurea MCC950 is a NLRP3 inflammasome inhibitor with potential clinical utility. However, the mechanism of action of MCC950 remains unknown. Here, we characterize the mechanism of action of MCC950 in both wild-type and autoinflammatory-related NLRP3 mutants, and demonstrate that MCC950 closes the 'open' conformation of active NLRP3.
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Affiliation(s)
- Ana Tapia-Abellán
- Biomedical Research Institute of Murcia (IMIB-Arrixaca), University Clinical Hospital Virgen de la Arrixaca, Murcia, Spain
| | - Diego Angosto-Bazarra
- Biomedical Research Institute of Murcia (IMIB-Arrixaca), University Clinical Hospital Virgen de la Arrixaca, Murcia, Spain
| | - Helios Martínez-Banaclocha
- Biomedical Research Institute of Murcia (IMIB-Arrixaca), University Clinical Hospital Virgen de la Arrixaca, Murcia, Spain
| | - Carlos de Torre-Minguela
- Biomedical Research Institute of Murcia (IMIB-Arrixaca), University Clinical Hospital Virgen de la Arrixaca, Murcia, Spain
| | - Jose P Cerón-Carrasco
- Bioinformatics and High Performance Computing Research Group (BIO-HPC), Computer Engineering Department, Universidad Católica de Murcia (UCAM), Murcia, Spain
| | - Horacio Pérez-Sánchez
- Bioinformatics and High Performance Computing Research Group (BIO-HPC), Computer Engineering Department, Universidad Católica de Murcia (UCAM), Murcia, Spain
| | - Juan I Arostegui
- Department of Immunology, Hospital Clinic-IDIBAPS, Barcelona, Spain
| | - Pablo Pelegrin
- Biomedical Research Institute of Murcia (IMIB-Arrixaca), University Clinical Hospital Virgen de la Arrixaca, Murcia, Spain.
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49
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de Carvalho RVH, Silva ALN, Santos LL, Andrade WA, de Sá KSG, Zamboni DS. Macrophage priming is dispensable for NLRP3 inflammasome activation and restriction of Leishmania amazonensis replication. J Leukoc Biol 2019; 106:631-640. [PMID: 31063608 DOI: 10.1002/jlb.ma1118-471r] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2019] [Revised: 04/10/2019] [Accepted: 04/14/2019] [Indexed: 12/23/2022] Open
Abstract
The NLRP3 inflammasome is activated in response to multiple stimuli and triggers activation of caspase-1 (CASP1), IL-1β production, and inflammation. NLRP3 activation requires two signals. The first leads to transcriptional regulation of specific genes related to inflammation, and the second is triggered when pathogens, toxins, or specific compounds damage cellular membranes and/or trigger the production of reactive oxygen species (ROS). Here, we assess the requirement of the first signal (priming) for the activation of the NLRP3 inflammasome in bone marrow-derived macrophages (BMDMs) infected with Leishmania amazonensis. We found that BMDMs express the inflammasome components NLRP3, ASC, and CASP1 at sufficient levels to enable the assembly and activation of NLRP3 inflammasome in response to infection. Therefore, priming was not required for the formation of ASC specks, CASP1 activation (measured by fluorescent dye FAM-YVAD), and restriction of L. amazonensis replication via the NLRP3 inflammasome. By contrast, BMDM priming was required for CASP1 cleavage (p20) and IL-1β secretion, because priming triggers robust up-regulation of pro-IL-1β and CASP11 that are important for efficient processing of CASP1 and IL-1β. Taken together, our data shed light into the cellular and molecular processes involved in activation of the NLRP3 in macrophages by Leishmania, a process that is important for the outcome of Leishmaniasis.
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Affiliation(s)
- Renan V H de Carvalho
- Departamento de Biologia Celular e Molecular e Bioagentes Patogênicos, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Alexandre L N Silva
- Departamento de Biologia Celular e Molecular e Bioagentes Patogênicos, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Leonardo L Santos
- Departamento de Biologia Celular e Molecular e Bioagentes Patogênicos, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Warrison A Andrade
- Departamento de Biologia Celular e Molecular e Bioagentes Patogênicos, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Keyla S G de Sá
- Departamento de Biologia Celular e Molecular e Bioagentes Patogênicos, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Dario S Zamboni
- Departamento de Biologia Celular e Molecular e Bioagentes Patogênicos, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, São Paulo, Brazil
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50
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Carty M, Kearney J, Shanahan KA, Hams E, Sugisawa R, Connolly D, Doran CG, Muñoz-Wolf N, Gürtler C, Fitzgerald KA, Lavelle EC, Fallon PG, Bowie AG. Cell Survival and Cytokine Release after Inflammasome Activation Is Regulated by the Toll-IL-1R Protein SARM. Immunity 2019; 50:1412-1424.e6. [PMID: 31076360 DOI: 10.1016/j.immuni.2019.04.005] [Citation(s) in RCA: 91] [Impact Index Per Article: 18.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2018] [Revised: 03/12/2019] [Accepted: 04/09/2019] [Indexed: 01/07/2023]
Abstract
Assembly of inflammasomes after infection or injury leads to the release of interleukin-1β (IL-1β) and to pyroptosis. After inflammasome activation, cells either pyroptose or enter a hyperactivated state defined by IL-1β secretion without cell death, but what controls these different outcomes is unknown. Here, we show that removal of the Toll-IL-1R protein SARM from macrophages uncouples inflammasome-dependent cytokine release and pyroptosis, whereby cells displayed increased IL-1β production but reduced pyroptosis. Correspondingly, increasing SARM in cells caused less IL-1β release and more pyroptosis. SARM suppressed IL-1β by directly restraining the NLRP3 inflammasome and, hence, caspase-1 activation. Consistent with a role for SARM in pyroptosis, Sarm1-/- mice were protected from lipopolysaccharide (LPS)-stimulated sepsis. Pyroptosis-inducing, but not hyperactivating, NLRP3 stimulants caused SARM-dependent mitochondrial depolarization. Thus, SARM-dependent mitochondrial depolarization distinguishes NLRP3 activators that cause pyroptosis from those that do not, and SARM modulation represents a cell-intrinsic mechanism to regulate cell fate after inflammasome activation.
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Affiliation(s)
- Michael Carty
- School of Biochemistry and Immunology, Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin 2, Ireland
| | - Jay Kearney
- School of Biochemistry and Immunology, Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin 2, Ireland
| | - Katharine A Shanahan
- School of Biochemistry and Immunology, Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin 2, Ireland
| | - Emily Hams
- School of Medicine, Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin 2, Ireland
| | - Ryoichi Sugisawa
- School of Biochemistry and Immunology, Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin 2, Ireland
| | - Dympna Connolly
- School of Biochemistry and Immunology, Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin 2, Ireland
| | - Ciara G Doran
- School of Biochemistry and Immunology, Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin 2, Ireland
| | - Natalia Muñoz-Wolf
- School of Biochemistry and Immunology, Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin 2, Ireland
| | - Claudia Gürtler
- School of Biochemistry and Immunology, Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin 2, Ireland
| | - Katherine A Fitzgerald
- Division of Infectious Diseases and Immunology, University of Massachusetts Medical School, Worcester, MA, USA
| | - Ed C Lavelle
- School of Biochemistry and Immunology, Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin 2, Ireland
| | - Padraic G Fallon
- School of Medicine, Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin 2, Ireland
| | - Andrew G Bowie
- School of Biochemistry and Immunology, Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin 2, Ireland.
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