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Nurmi K, Silventoinen K, Keskitalo S, Rajamäki K, Kouri VP, Kinnunen M, Jalil S, Maldonado R, Wartiovaara K, Nievas EI, Denita-Juárez SP, Duncan CJA, Kuismin O, Saarela J, Romo I, Martelius T, Parantainen J, Beklen A, Bilicka M, Matikainen S, Nordström DC, Kaustio M, Wartiovaara-Kautto U, Kilpivaara O, Klein C, Hauck F, Jahkola T, Hautala T, Varjosalo M, Barreto G, Seppänen MRJ, Eklund KK. Truncating NFKB1 variants cause combined NLRP3 inflammasome activation and type I interferon signaling and predispose to necrotizing fasciitis. Cell Rep Med 2024; 5:101503. [PMID: 38593810 PMCID: PMC11031424 DOI: 10.1016/j.xcrm.2024.101503] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2022] [Revised: 01/04/2024] [Accepted: 03/18/2024] [Indexed: 04/11/2024]
Abstract
In monogenic autoinflammatory diseases, mutations in genes regulating innate immune responses often lead to uncontrolled activation of inflammasome pathways or the type I interferon (IFN-I) response. We describe a mechanism of autoinflammation potentially predisposing patients to life-threatening necrotizing soft tissue inflammation. Six unrelated families are identified in which affected members present with necrotizing fasciitis or severe soft tissue inflammations. Exome sequencing reveals truncating monoallelic loss-of-function variants of nuclear factor κ light-chain enhancer of activated B cells (NFKB1) in affected patients. In patients' macrophages and in NFKB1-variant-bearing THP-1 cells, activation increases both interleukin (IL)-1β secretion and IFN-I signaling. Truncation of NF-κB1 impairs autophagy, accompanied by the accumulation of reactive oxygen species and reduced degradation of inflammasome receptor nucleotide-binding oligomerization domain, leucine-rich repeat-containing protein 3 (NLRP3), and Toll/IL-1 receptor domain-containing adaptor protein inducing IFN-β (TRIF), thus leading to combined excessive inflammasome and IFN-I activity. Many of the patients respond to anti-inflammatory treatment, and targeting IL-1β and/or IFN-I signaling could represent a therapeutic approach for these patients.
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Affiliation(s)
- Katariina Nurmi
- Faculty of Medicine, Clinicum, Translational Immunology Research Program, Research Program Unit (RPU), University of Helsinki (UH), 00014 Helsinki, Finland
| | - Kristiina Silventoinen
- Faculty of Medicine, Clinicum, Translational Immunology Research Program, Research Program Unit (RPU), University of Helsinki (UH), 00014 Helsinki, Finland
| | - Salla Keskitalo
- Systems Biology/Pathology Research Group, iCAN Digital Precision Cancer Medicine Flagship, Institute of Biotechnology, HiLIFE, UH, 00014 Helsinki, Finland
| | - Kristiina Rajamäki
- Faculty of Medicine, Clinicum, Translational Immunology Research Program, Research Program Unit (RPU), University of Helsinki (UH), 00014 Helsinki, Finland; Department of Medical and Clinical Genetics, Applied Tumor Genomics Research Program, RPU, UH, 00014 Helsinki, Finland
| | - Vesa-Petteri Kouri
- Faculty of Medicine, Clinicum, Translational Immunology Research Program, Research Program Unit (RPU), University of Helsinki (UH), 00014 Helsinki, Finland
| | - Matias Kinnunen
- Systems Biology/Pathology Research Group, iCAN Digital Precision Cancer Medicine Flagship, Institute of Biotechnology, HiLIFE, UH, 00014 Helsinki, Finland
| | - Sami Jalil
- Clinical Genetics UH and Helsinki University Hospital (HUH), 00014 Helsinki, Finland
| | - Rocio Maldonado
- Clinical Genetics UH and Helsinki University Hospital (HUH), 00014 Helsinki, Finland
| | - Kirmo Wartiovaara
- Clinical Genetics UH and Helsinki University Hospital (HUH), 00014 Helsinki, Finland
| | | | | | - Christopher J A Duncan
- Translational and Clinical Research Institute, Newcastle University, Newcastle upon Tyne NE1 4HH, UK
| | - Outi Kuismin
- Department of Clinical Genetics, Oulu University Hospital (OUH), 90014 Oulu, Finland; PEDEGO Research Unit and Medical Research Center Oulu, OUH and University of Oulu (OU), 90014 Oulu, Finland
| | - Janna Saarela
- Institute for Molecular Medicine Finland, HiLIFE, UH, 00014 Helsinki, Finland; Centre for Molecular Medicine Norway, University of Oslo, 0313 Oslo, Norway; Department of Medical Genetics, Oslo University Hospital, 0450 Oslo, Norway
| | - Inka Romo
- Inflammation Center, Department of Infectious Disease, HUH, 00029 Helsinki, Finland
| | - Timi Martelius
- Inflammation Center, Department of Infectious Disease, HUH, 00029 Helsinki, Finland
| | - Jukka Parantainen
- Faculty of Medicine, Clinicum, Translational Immunology Research Program, Research Program Unit (RPU), University of Helsinki (UH), 00014 Helsinki, Finland
| | - Arzu Beklen
- Faculty of Medicine, Clinicum, Translational Immunology Research Program, Research Program Unit (RPU), University of Helsinki (UH), 00014 Helsinki, Finland
| | - Marcelina Bilicka
- Faculty of Medicine, Clinicum, Translational Immunology Research Program, Research Program Unit (RPU), University of Helsinki (UH), 00014 Helsinki, Finland
| | - Sampsa Matikainen
- Faculty of Medicine, Clinicum, Translational Immunology Research Program, Research Program Unit (RPU), University of Helsinki (UH), 00014 Helsinki, Finland
| | - Dan C Nordström
- Faculty of Medicine, Clinicum, Translational Immunology Research Program, Research Program Unit (RPU), University of Helsinki (UH), 00014 Helsinki, Finland; Department of Internal Medicine and Rehabilitation, HUH and UH, 00029 Helsinki, Finland
| | - Meri Kaustio
- Institute for Molecular Medicine Finland, HiLIFE, UH, 00014 Helsinki, Finland
| | - Ulla Wartiovaara-Kautto
- Department of Hematology, HUH, Comprehensive Cancer Center, UH, 00029 Helsinki, Finland; Applied Tumor Genomics Research Program, RPU, Faculty of Medicine, UH, 00014 Helsinki, Finland
| | - Outi Kilpivaara
- Applied Tumor Genomics Research Program, RPU, Faculty of Medicine, UH, 00014 Helsinki, Finland; Department of Medical and Clinical Genetics/Medicum, Faculty of Medicine, UH, 00014 Helsinki, Finland; iCAN Digital Precision Cancer Medicine Flagship, UH, 00014 Helsinki, Finland; HUS Diagnostic Center, HUSLAB Laboratory of Genetics, HUH, 00029 Helsinki, Finland
| | - Christoph Klein
- Department of Pediatrics, Dr. von Hauner Children's Hospital, University Hospital, Ludwig-Maximilians-Universität München, 80337 Munich, Germany
| | - Fabian Hauck
- Department of Pediatrics, Dr. von Hauner Children's Hospital, University Hospital, Ludwig-Maximilians-Universität München, 80337 Munich, Germany
| | - Tiina Jahkola
- Department of Plastic Surgery, HUH, 00029 Helsinki, Finland
| | - Timo Hautala
- Research Unit of Internal Medicine and Biomedicine, OU, and Infectious Diseases Clinic, OUH, 90014 Oulu, Finland
| | - Markku Varjosalo
- Systems Biology/Pathology Research Group, iCAN Digital Precision Cancer Medicine Flagship, Institute of Biotechnology, HiLIFE, UH, 00014 Helsinki, Finland
| | - Goncalo Barreto
- Faculty of Medicine, Clinicum, Translational Immunology Research Program, Research Program Unit (RPU), University of Helsinki (UH), 00014 Helsinki, Finland
| | - Mikko R J Seppänen
- Adult Immunodeficiency Unit, Infectious Diseases, Inflammation Center, HUH and UH, 00029 Helsinki, Finland; Rare Disease Center, Children and Adolescents, HUH and UH, 00029 Helsinki, Finland.
| | - Kari K Eklund
- Faculty of Medicine, Clinicum, Translational Immunology Research Program, Research Program Unit (RPU), University of Helsinki (UH), 00014 Helsinki, Finland; Department of Rheumatology, HUH and UH, 00029 Helsinki, Finland; Orton Orthopaedic Hospital, 00280 Helsinki, Finland.
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2
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Lorey MB, Youssef A, Äikäs L, Borrelli M, Hermansson M, Assini JM, Kemppainen A, Ruhanen H, Ruuth M, Matikainen S, Kovanen PT, Käkelä R, Boffa MB, Koschinsky ML, Öörni K. Lipoprotein(a) induces caspase-1 activation and IL-1 signaling in human macrophages. Front Cardiovasc Med 2023; 10:1130162. [PMID: 37293282 PMCID: PMC10244518 DOI: 10.3389/fcvm.2023.1130162] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2022] [Accepted: 05/02/2023] [Indexed: 06/10/2023] Open
Abstract
Introduction Lipoprotein(a) (Lp(a)) is an LDL-like particle with an additional apolipoprotein (apo)(a) covalently attached. Elevated levels of circulating Lp(a) are a risk factor for atherosclerosis. A proinflammatory role for Lp(a) has been proposed, but its molecular details are incompletely defined. Methods and results To explore the effect of Lp(a) on human macrophages we performed RNA sequencing on THP-1 macrophages treated with Lp(a) or recombinant apo(a), which showed that especially Lp(a) induces potent inflammatory responses. Thus, we stimulated THP-1 macrophages with serum containing various Lp(a) levels to investigate their correlations with cytokines highlighted by the RNAseq, showing significant correlations with caspase-1 activity and secretion of IL-1β and IL-18. We further isolated both Lp(a) and LDL particles from three donors and then compared their atheroinflammatory potentials together with recombinant apo(a) in primary and THP-1 derived macrophages. Compared with LDL, Lp(a) induced a robust and dose-dependent caspase-1 activation and release of IL-1β and IL-18 in both macrophage types. Recombinant apo(a) strongly induced caspase-1 activation and IL-1β release in THP-1 macrophages but yielded weak responses in primary macrophages. Structural analysis of these particles revealed that the Lp(a) proteome was enriched in proteins associated with complement activation and coagulation, and its lipidome was relatively deficient in polyunsaturated fatty acids and had a high n-6/n-3 ratio promoting inflammation. Discussion Our data show that Lp(a) particles induce the expression of inflammatory genes, and Lp(a) and to a lesser extent apo(a) induce caspase-1 activation and IL-1 signaling. Major differences in the molecular profiles between Lp(a) and LDL contribute to Lp(a) being more atheroinflammatory.
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Affiliation(s)
- Martina B. Lorey
- Atherosclerosis Research Laboratory, Wihuri Research Institute, Helsinki, Finland
- Molecular and Integrative Biosciences, Faculty of Biological and Environmental Sciences, University of Helsinki, Helsinki, Finland
| | - Amer Youssef
- Robarts Research Institute, Schulich School of Medicine & Dentistry, The University of Western Ontario, London, ON, Canada
| | - Lauri Äikäs
- Atherosclerosis Research Laboratory, Wihuri Research Institute, Helsinki, Finland
| | - Matthew Borrelli
- Department of Physiology & Pharmacology, Schulich School of Medicine & Dentistry, The University of Western Ontario, London, ON, Canada
| | - Martin Hermansson
- Atherosclerosis Research Laboratory, Wihuri Research Institute, Helsinki, Finland
| | - Julia M. Assini
- Robarts Research Institute, Schulich School of Medicine & Dentistry, The University of Western Ontario, London, ON, Canada
- Department of Biochemistry, Schulich School of Medicine & Dentistry, The University of Western Ontario, London, ON, Canada
| | - Aapeli Kemppainen
- Atherosclerosis Research Laboratory, Wihuri Research Institute, Helsinki, Finland
| | - Hanna Ruhanen
- Molecular and Integrative Biosciences, Faculty of Biological and Environmental Sciences, University of Helsinki, Helsinki, Finland
- Helsinki University Lipidomics Unit (HiLIPID), Helsinki Institute of Life Science (HiLIFE) and Biocenter Finland, Helsinki, Finland
| | - Maija Ruuth
- Atherosclerosis Research Laboratory, Wihuri Research Institute, Helsinki, Finland
| | - Sampsa Matikainen
- Helsinki Rheumatic Disease and Inflammation Research Group, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | - Petri T. Kovanen
- Atherosclerosis Research Laboratory, Wihuri Research Institute, Helsinki, Finland
| | - Reijo Käkelä
- Molecular and Integrative Biosciences, Faculty of Biological and Environmental Sciences, University of Helsinki, Helsinki, Finland
- Helsinki University Lipidomics Unit (HiLIPID), Helsinki Institute of Life Science (HiLIFE) and Biocenter Finland, Helsinki, Finland
| | - Michael B. Boffa
- Robarts Research Institute, Schulich School of Medicine & Dentistry, The University of Western Ontario, London, ON, Canada
- Department of Biochemistry, Schulich School of Medicine & Dentistry, The University of Western Ontario, London, ON, Canada
| | - Marlys L. Koschinsky
- Robarts Research Institute, Schulich School of Medicine & Dentistry, The University of Western Ontario, London, ON, Canada
- Department of Physiology & Pharmacology, Schulich School of Medicine & Dentistry, The University of Western Ontario, London, ON, Canada
| | - Katariina Öörni
- Atherosclerosis Research Laboratory, Wihuri Research Institute, Helsinki, Finland
- Molecular and Integrative Biosciences, Faculty of Biological and Environmental Sciences, University of Helsinki, Helsinki, Finland
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3
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Cypryk W, Czernek L, Horodecka K, Chrzanowski J, Stańczak M, Nurmi K, Bilicka M, Gadzinowski M, Walczak-Drzewiecka A, Stensland M, Eklund K, Fendler W, Nyman TA, Matikainen S. Lipopolysaccharide Primes Human Macrophages for Noncanonical Inflammasome-Induced Extracellular Vesicle Secretion. J Immunol 2023; 210:322-334. [PMID: 36525001 DOI: 10.4049/jimmunol.2200444] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/22/2022] [Accepted: 11/18/2022] [Indexed: 01/04/2023]
Abstract
Human macrophages secrete extracellular vesicles (EVs) loaded with numerous immunoregulatory proteins. Vesicle-mediated protein secretion in macrophages is regulated by poorly characterized mechanisms; however, it is now known that inflammatory conditions significantly alter both the quantities and protein composition of secreted vesicles. In this study, we employed high-throughput quantitative proteomics to characterize the modulation of EV-mediated protein secretion during noncanonical caspase-4/5 inflammasome activation via LPS transfection. We show that human macrophages activate robust caspase-4-dependent EV secretion upon transfection of LPS, and this process is also partially dependent on NLRP3 and caspase-5. A similar effect occurs with delivery of the LPS with Escherichia coli-derived outer membrane vesicles. Moreover, sensitization of the macrophages through TLR4 by LPS priming prior to LPS transfection dramatically augments the EV-mediated protein secretion. Our data demonstrate that this process differs significantly from canonical inflammasome activator ATP-induced vesiculation, and it is dependent on the autocrine IFN signal associated with TLR4 activation. LPS priming preceding the noncanonical inflammasome activation significantly enhances vesicle-mediated secretion of inflammasome components caspase-1, ASC, and lytic cell death effectors GSDMD, MLKL, and NINJ1, suggesting that inflammatory EV transfer may exert paracrine effects in recipient cells. Moreover, using bioinformatics methods, we identify 15-deoxy-Δ12,14-PGJ2 and parthenolide as inhibitors of caspase-4-mediated inflammation and vesicle secretion, indicating new therapeutic potential of these anti-inflammatory drugs.
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Affiliation(s)
- Wojciech Cypryk
- Centre of Molecular and Macromolecular Studies, Polish Academy of Sciences, Lodz, Poland
| | - Liliana Czernek
- Centre of Molecular and Macromolecular Studies, Polish Academy of Sciences, Lodz, Poland
| | - Katarzyna Horodecka
- Centre of Molecular and Macromolecular Studies, Polish Academy of Sciences, Lodz, Poland
| | - Jędrzej Chrzanowski
- Department of Biostatistics and Translational Medicine, Medical University of Lodz, Lodz, Poland
| | - Marcin Stańczak
- Department of Biostatistics and Translational Medicine, Medical University of Lodz, Lodz, Poland
| | - Katariina Nurmi
- Department of Rheumatology, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | - Marcelina Bilicka
- Department of Rheumatology, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | - Mariusz Gadzinowski
- Centre of Molecular and Macromolecular Studies, Polish Academy of Sciences, Lodz, Poland
| | | | - Maria Stensland
- Department of Immunology, University of Oslo and Oslo University Hospital, Oslo, Norway; and
| | - Kari Eklund
- Department of Rheumatology, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | - Wojciech Fendler
- Department of Biostatistics and Translational Medicine, Medical University of Lodz, Lodz, Poland.,Department of Radiation Oncology, Dana-Farber Cancer Institute, Boston, MA
| | - Tuula A Nyman
- Department of Immunology, University of Oslo and Oslo University Hospital, Oslo, Norway; and
| | - Sampsa Matikainen
- Department of Rheumatology, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
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Abstract
SARS-CoV-2 is a new type of coronavirus that has caused worldwide pandemic. The disease induced by SARS-CoV-2 is called COVID-19. A majority of people with COVID-19 have relatively mild respiratory symptoms. However, a small percentage of COVID-19 patients develop a severe disease where multiple organs are affected. These severe forms of SARS-CoV-2 infections are associated with excessive production of pro-inflammatory cytokines, so called "cytokine storm". Inflammasomes, which are protein complexes of the innate immune system orchestrate development of local and systemic inflammation during virus infection. Recent data suggest involvement of inflammasomes in severe COVID-19. Activation of inflammasome exerts two major effects: it activates caspase-1-mediated processing and secretion of pro-inflammatory cytokines IL-1β and IL-18, and induces inflammatory cell death, pyroptosis, via protein called gasdermin D. Here, we provide comprehensive review of current understanding of the activation and possible functions of different inflammasome structures during SARS-CoV-2 infection and compare that to response caused by influenza A virus. We also discuss how novel SARS-CoV-2 mRNA vaccines activate innate immune response, which is a prerequisite for the activation of protective adaptive immune response.
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Affiliation(s)
- Juha Kaivola
- Helsinki Rheumatic Disease and Inflammation Research Group, Translational Immunology Research Program, University of Helsinki, 00290 Helsinki, Finland
| | - Tuula Anneli Nyman
- Department of Immunology, Institute of Clinical Medicine, University of Oslo and Rikshospitalet Oslo, 0372 Oslo, Norway
| | - Sampsa Matikainen
- Helsinki Rheumatic Disease and Inflammation Research Group, Translational Immunology Research Program, University of Helsinki, 00290 Helsinki, Finland
- Finnish Medicines Agency (FIMEA), PL 55, FIMEA, 00034 Helsinki, Finland
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5
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Nurmi K, Niemi K, Kareinen I, Silventoinen K, Lorey MB, Chen Y, Kouri VP, Parantainen J, Juutilainen T, Öörni K, Kovanen PT, Nordström D, Matikainen S, Eklund KK. Native and oxidised lipoproteins negatively regulate the serum amyloid A-induced NLRP3 inflammasome activation in human macrophages. Clin Transl Immunology 2021; 10:e1323. [PMID: 34377468 PMCID: PMC8329955 DOI: 10.1002/cti2.1323] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2020] [Revised: 06/19/2021] [Accepted: 07/16/2021] [Indexed: 01/17/2023] Open
Abstract
Objectives The NLRP3 inflammasome plays a key role in arterial wall inflammation. In this study, we elucidated the role of serum lipoproteins in the regulation of NLRP3 inflammasome activation by serum amyloid A (SAA) and other inflammasome activators. Methods The effect of lipoproteins on the NLRP3 inflammasome activation was studied in primary human macrophages and THP‐1 macrophages. The effect of oxidised low‐density lipoprotein (LDL) was examined in an in vivo mouse model of SAA‐induced peritoneal inflammation. Results Native and oxidised high‐density lipoproteins (HDL3) and LDLs inhibited the interaction of SAA with TLR4. HDL3 and LDL inhibited the secretion of interleukin (IL)‐1β and tumor necrosis factor by reducing their transcription. Oxidised forms of these lipoproteins reduced the secretion of mature IL‐1β also by inhibiting the activation of NLRP3 inflammasome induced by SAA, ATP, nigericin and monosodium urate crystals. Specifically, oxidised LDL was found to inhibit the inflammasome complex formation. No cellular uptake of lipoproteins was required, nor intact lipoprotein particles for the inhibitory effect, as the lipid fraction of oxidised LDL was sufficient. The inhibition of NLRP3 inflammasome activation by oxidised LDL was partially dependent on autophagy. Finally, oxidised LDL inhibited the SAA‐induced peritoneal inflammation and IL‐1β secretion in vivo. Conclusions These findings reveal that both HDL3 and LDL inhibit the proinflammatory activity of SAA and this inhibition is further enhanced by lipoprotein oxidation. Thus, lipoproteins possess major anti‐inflammatory functions that hinder the NLRP3 inflammasome‐activating signals, particularly those exerted by SAA, which has important implications in the pathogenesis of cardiovascular diseases.
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Affiliation(s)
- Katariina Nurmi
- Helsinki Rheumatic Diseases and Inflammation Research Group Translational Immunology Research Program University of Helsinki Helsinki University Clinicum Helsinki Finland
| | | | | | - Kristiina Silventoinen
- Helsinki Rheumatic Diseases and Inflammation Research Group Translational Immunology Research Program University of Helsinki Helsinki University Clinicum Helsinki Finland
| | - Martina B Lorey
- Helsinki Rheumatic Diseases and Inflammation Research Group Translational Immunology Research Program University of Helsinki Helsinki University Clinicum Helsinki Finland.,Wihuri Research Institute Helsinki Finland
| | - Yan Chen
- Helsinki Rheumatic Diseases and Inflammation Research Group Translational Immunology Research Program University of Helsinki Helsinki University Clinicum Helsinki Finland
| | - Vesa-Petteri Kouri
- Helsinki Rheumatic Diseases and Inflammation Research Group Translational Immunology Research Program University of Helsinki Helsinki University Clinicum Helsinki Finland
| | - Jukka Parantainen
- Helsinki Rheumatic Diseases and Inflammation Research Group Translational Immunology Research Program University of Helsinki Helsinki University Clinicum Helsinki Finland
| | - Timo Juutilainen
- Division of Orthopedics Department of Surgery Helsinki University Central Hospital Vantaa Finland
| | | | | | - Dan Nordström
- Helsinki Rheumatic Diseases and Inflammation Research Group Translational Immunology Research Program University of Helsinki Helsinki University Clinicum Helsinki Finland.,Internal Medicine and Rehabilitation University of Helsinki and Helsinki University Hospital Helsinki Finland
| | - Sampsa Matikainen
- Helsinki Rheumatic Diseases and Inflammation Research Group Translational Immunology Research Program University of Helsinki Helsinki University Clinicum Helsinki Finland
| | - Kari K Eklund
- Helsinki Rheumatic Diseases and Inflammation Research Group Translational Immunology Research Program University of Helsinki Helsinki University Clinicum Helsinki Finland.,Division of Rheumatology Department of Medicine Helsinki University Hospital Helsinki Finland.,Orton Orthopaedic Hospital Helsinki Finland
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6
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Lorey M, Borelli M, Äikäs L, Youssef A, Hermansson M, Kemppainen A, Ruhanen H, Ruuth M, Matikainen S, Kovanen P, Käkelä R, Boffa M, Koschinsky M, Öörni K. Lp(a) induces inflammasome activation in human macrophages. Atherosclerosis 2021. [DOI: 10.1016/j.atherosclerosis.2021.06.061] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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7
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Abstract
Inflammasomes are multiprotein complexes of the innate immune system. Their activation leads to robust secretion of exosomes. In this issue, Wozniak et al. (2020. J. Cell Biol. https://doi.org/10.1083/jcb.201912074) reveal a connection between inflammasome-mediated cleavage of Rab-interacting lysosomal protein (RILP) and sequence-specific loading of miRNAs into exosomes.
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Affiliation(s)
- Sampsa Matikainen
- Helsinki Rheumatic Disease and Inflammation Research Group, Translational Immunology Research Program, University of Helsinki, Helsinki University Clinicum, Helsinki, Finland
| | - Tuula A. Nyman
- Department of Immunology, Institute of Clinical Medicine, University of Oslo and Rikshospitalet, Oslo, Norway
| | - Wojciech Cypryk
- Centre of Molecular and Macromolecular Studies, Polish Academy of Sciences, Lodz, Poland
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8
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Matikainen S, Nyman TA, Cypryk W. Function and Regulation of Noncanonical Caspase-4/5/11 Inflammasome. J I 2020; 204:3063-3069. [DOI: 10.4049/jimmunol.2000373] [Citation(s) in RCA: 48] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/05/2020] [Accepted: 04/20/2020] [Indexed: 12/19/2022]
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9
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Cypryk W, Nyman TA, Matikainen S. From Inflammasome to Exosome-Does Extracellular Vesicle Secretion Constitute an Inflammasome-Dependent Immune Response? Front Immunol 2018; 9:2188. [PMID: 30319640 PMCID: PMC6167409 DOI: 10.3389/fimmu.2018.02188] [Citation(s) in RCA: 85] [Impact Index Per Article: 14.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2018] [Accepted: 09/04/2018] [Indexed: 12/11/2022] Open
Abstract
Inflammasomes are intracellular protein complexes of pattern recognition receptors and caspase-1, with essential functions in regulating inflammatory responses of macrophages and dendritic cells. The primary role of inflammasomes is to catalyze processing and secretion of pro-inflammatory cytokines IL-1β and IL-18. Recently, intracellular non-canonical inflammasome activation by caspases-4/5, which are also regulators of pyroptosis via processing gasdermin D, has been elucidated. Caspase-1, the effector protease of inflammasome complex, is also known to modulate secretion of large number of other proteins. Thereby, besides its known role in processing pro-inflammatory cytokines, the inflammasome turns into a universal regulator of protein secretion, which allows the danger-exposed cells to release various proteins in order to alert and guide neighboring cells. Majority of these proteins are not secreted through the conventional ER-Golgi secretory pathway. Instead, they are segregated in membrane-enclosed compartment and secreted in nanosized extracellular vesicles, which protect their cargo and guide it for delivery. Growing evidence indicates that inflammasome activity correlates with enhanced secretion of extracellular vesicles and modulation of their protein cargo. This inflammasome-driven unconventional, vesicle-mediated secretion of multitude of immunoregulatory proteins may constitute a novel paradigm in inflammatory responses. In this mini review we discuss the current knowledge and highlight unsolved questions about metabolic processes, signals, and mechanisms linking inflammasome activity with regulated extracellular vesicle secretion of proteins. Further investigations on this relationship may in the future help understanding the significance of extracellular vesicle secretion in inflammatory diseases such as atherosclerosis, gouty arthritis, asthma, Alzheimer's and many others.
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Affiliation(s)
- Wojciech Cypryk
- Centre of Molecular and Macromolecular Studies, Polish Academy of Sciences, Lodz, Poland
| | - Tuula A Nyman
- Department of Immunology, Institute of Clinical Medicine, University of Oslo and Rikshospitalet Oslo, Oslo, Norway
| | - Sampsa Matikainen
- Division of Rheumatology, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
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10
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Aittomäki S, Valanne S, Lehtinen T, Matikainen S, Nyman TA, Rämet M, Pesu M. Proprotein convertase Furin1 expression in the Drosophila fat body is essential for a normal antimicrobial peptide response and bacterial host defense. FASEB J 2017; 31:4770-4782. [PMID: 28705811 DOI: 10.1096/fj.201700296r] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2017] [Accepted: 06/27/2017] [Indexed: 01/17/2023]
Abstract
Invading pathogens provoke robust innate immune responses in Dipteran insects, such as Drosophila melanogaster In a systemic bacterial infection, a humoral response is induced in the fat body. Gram-positive bacteria trigger the Toll signaling pathway, whereas gram-negative bacterial infections are signaled via the immune deficiency (IMD) pathway. We show here that the RNA interference-mediated silencing of Furin1-a member of the proprotein convertase enzyme family-specifically in the fat body, results in a reduction in the expression of antimicrobial peptides. This, in turn, compromises the survival of adult fruit flies in systemic infections that are caused by both gram-positive and -negative bacteria. Furin1 plays a nonredundant role in the regulation of immune responses, as silencing of Furin2, the other member of the enzyme family, had no effect on survival or the expression of antimicrobial peptides upon a systemic infection. Furin1 does not directly affect the Toll or IMD signaling pathways, but the reduced expression of Furin1 up-regulates stress response factors in the fat body. We also demonstrate that Furin1 is a negative regulator of the Janus kinase/signal transducer and activator of transcription signaling pathway, which is implicated in stress responses in the fly. In summary, our data identify Furin1 as a novel regulator of humoral immunity and cellular stress responses in Drosophila-Aittomäki, S., Valanne, S., Lehtinen, T., Matikainen, S., Nyman, T. A., Rämet, M., Pesu, M. Proprotein convertase Furin1 expression in the Drosophila fat body is essential for a normal antimicrobial peptide response and bacterial host defense.
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Affiliation(s)
- Saara Aittomäki
- Immunoregulation Group, University of Tampere, Tampere, Finland.,BioMediTech Institute, University of Tampere, Tampere, Finland
| | - Susanna Valanne
- BioMediTech Institute, University of Tampere, Tampere, Finland.,Experimental Immunology Group, Faculty of Medicine and Life Sciences, University of Tampere, Tampere, Finland
| | - Tapio Lehtinen
- Immunoregulation Group, University of Tampere, Tampere, Finland.,BioMediTech Institute, University of Tampere, Tampere, Finland
| | | | - Tuula A Nyman
- Institute of Biotechnology, University of Helsinki, Helsinki, Finland
| | - Mika Rämet
- BioMediTech Institute, University of Tampere, Tampere, Finland.,Experimental Immunology Group, Faculty of Medicine and Life Sciences, University of Tampere, Tampere, Finland.,PEDEGO Research Unit, Medical Research Center Oulu, and.,Department of Children and Adolescents, Oulu University Hospital, University of Oulu, Oulu, Finland
| | - Marko Pesu
- Immunoregulation Group, University of Tampere, Tampere, Finland .,BioMediTech Institute, University of Tampere, Tampere, Finland.,Department of Dermatology, Tampere University Hospital, Tampere, Finland
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11
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Abstract
Viral infections are a major burden to human and animal health. Immune response against viruses consists of innate and adaptive immunity which are both critical for the eradication of the viral infection. The innate immune system is the first line of defense against viral infections. Proper innate immune response is required for the activation of adaptive, humoral and cell-mediated immunity. Macrophages are innate immune cells which have a central role in detecting viral infections including influenza A and human immunodeficiency viruses. Macrophages and other host cells respond to viral infection by modulating their protein expression levels, proteins' posttranslational modifications, as well as proteins' intracellular localization and secretion. Therefore the detailed characterization how viruses dynamically manipulate host proteome is needed for understanding the molecular mechanisms of viral infection. It is critical to identify cellular host factors which are exploited by different viruses, and which are less prone for mutations and could serve as potential targets for novel antiviral compounds. Here, we review how proteomics studies have enhanced our understanding of macrophage response to viral infection with special focus on Influenza A and Human immunodeficiency viruses, and virus infections of swine. SIGNIFICANCE Influenza A viruses (IAVs) and human immunodeficiency viruses (HIV) infect annually millions of people worldwide and they form a severe threat to human health. Both IAVs and HIV-1 can efficiently antagonize host response and develop drug-resistant variants. Most current antiviral drugs are directed against viral proteins, and there is a constant need to develop new next-generation drugs targeting host proteins that are essential for viral replication. Porcine reproductive and respiratory syndrome virus (PRRSV) and porcine circovirus type 2 (PCV2) are economically important swine pathogens. Both PRRSV and PCV2 cause severe respiratory tract illnesses in swine. IAVs, HIV-1, and swine viruses infect macrophages activating antiviral response against these viruses. Macrophages also have a central role in the replication and spread of these viruses. However, macrophage response to these viruses is incompletely understood. Current proteomics methods can provide a global view of host-response to viral infection which is needed for in-depth understanding the molecular mechanisms of viral infection. Here we review the current proteomics studies on macrophage response to viral infection and provide insight into the global host proteome changes upon viral infection.
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Affiliation(s)
- Tuula A Nyman
- Department of Immunology, Institute of Clinical Medicine, University of Oslo and Rikshospitalet Oslo, Oslo, Norway.
| | - Sampsa Matikainen
- University of Helsinki and Helsinki University Hospital, Rheumatology, Helsinki, Finland
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12
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Nyman TA, Lorey MB, Cypryk W, Matikainen S. Mass spectrometry-based proteomic exploration of the human immune system: focus on the inflammasome, global protein secretion, and T cells. Expert Rev Proteomics 2017; 14:395-407. [PMID: 28406322 DOI: 10.1080/14789450.2017.1319768] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
INTRODUCTION The immune system is our defense system against microbial infections and tissue injury, and understanding how it works in detail is essential for developing drugs for different diseases. Mass spectrometry-based proteomics can provide in-depth information on the molecular mechanisms involved in immune responses. Areas covered: Summarized are the key immunology findings obtained with MS-based proteomics in the past five years, with a focus on inflammasome activation, global protein secretion, mucosal immunology, immunopeptidome and T cells. Special focus is on extracellular vesicle-mediated protein secretion and its role in immune responses. Expert commentary: Proteomics is an essential part of modern omics-scale immunology research. To date, MS-based proteomics has been used in immunology to study protein expression levels, their subcellular localization, secretion, post-translational modifications, and interactions in immune cells upon activation by different stimuli. These studies have made major contributions to understanding the molecular mechanisms involved in innate and adaptive immune responses. New developments in proteomics offer constantly novel possibilities for exploring the immune system. Examples of these techniques include mass cytometry and different MS-based imaging approaches which can be widely used in immunology.
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Affiliation(s)
- Tuula A Nyman
- a Department of Immunology , Institute of Clinical Medicine, University of Oslo and Rikshospitalet Oslo , Oslo , Norway
| | - Martina B Lorey
- b Rheumatology , University of Helsinki and Helsinki University Hospital , Helsinki , Finland
| | - Wojciech Cypryk
- c Department of Bioorganic Chemistry , Center of Molecular and Macromolecular Studies , Lodz , Poland
| | - Sampsa Matikainen
- b Rheumatology , University of Helsinki and Helsinki University Hospital , Helsinki , Finland
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13
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Lorey MB, Rossi K, Eklund KK, Nyman TA, Matikainen S. Global Characterization of Protein Secretion from Human Macrophages Following Non-canonical Caspase-4/5 Inflammasome Activation. Mol Cell Proteomics 2017; 16:S187-S199. [PMID: 28196878 DOI: 10.1074/mcp.m116.064840] [Citation(s) in RCA: 50] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2016] [Revised: 02/01/2017] [Indexed: 12/27/2022] Open
Abstract
Gram-negative bacteria are associated with a wide spectrum of infectious diseases in humans. Inflammasomes are cytosolic protein complexes that are assembled when the cell encounters pathogens or other harmful agents. The non-canonical caspase-4/5 inflammasome is activated by Gram-negative bacteria-derived lipopolysaccharide (LPS) and by endogenous oxidized phospholipids. Protein secretion is a critical component of the innate immune response. Here, we have used label-free quantitative proteomics to characterize global protein secretion in response to non-canonical inflammasome activation upon intracellular LPS recognition in human primary macrophages. Before proteomics, the total secretome was separated into two fractions, enriched extracellular vesicle (EV) fraction and rest-secretome (RS) fraction using size-exclusion centrifugation. We identified 1048 proteins from the EV fraction and 1223 proteins from the RS fraction. From these, 640 were identified from both fractions suggesting that the non-canonical inflammasome activates multiple, partly overlapping protein secretion pathways. We identified several secreted proteins that have a critical role in host response against severe Gram-negative bacterial infection. The soluble secretome (RS fraction) was highly enriched with inflammation-associated proteins upon intracellular LPS recognition. Several ribosomal proteins were highly abundant in the EV fraction upon infection, and our data strongly suggest that secretion of translational machinery and concomitant inhibition of translation are important parts of host response against Gram-negative bacteria sensing caspase-4/5 inflammasome. Intracellular recognition of LPS resulted in the secretion of two metalloproteinases, adisintegrin and metalloproteinase domain-containing protein 10 (ADAM10) and MMP14, in the enriched EV fraction. ADAM10 release was associated with the secretion of TNF, a key inflammatory cytokine, and M-CSF, an important growth factor for myeloid cells probably through ADAM10-dependent membrane shedding of these cytokines. Caspase-4/5 inflammasome activation also resulted in secretion of danger-associated molecules S100A8 and prothymosin-α in the enriched EV fraction. Both S100A8 and prothymosin-α are ligands for toll-like receptor 4 recognizing extracellular LPS, and they may contribute to endotoxic shock during non-canonical inflammasome activation.
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Affiliation(s)
- Martina B Lorey
- From the ‡Rheumatology, University of Helsinki and Helsinki University Hospital, 00290 Helsinki, Finland
| | - Katriina Rossi
- From the ‡Rheumatology, University of Helsinki and Helsinki University Hospital, 00290 Helsinki, Finland
| | - Kari K Eklund
- From the ‡Rheumatology, University of Helsinki and Helsinki University Hospital, 00290 Helsinki, Finland
| | - Tuula A Nyman
- §Department of Immunology, Institute of Clinical Medicine, University of Oslo and Rikshospitalet Oslo, Oslo 0424, Norway
| | - Sampsa Matikainen
- From the ‡Rheumatology, University of Helsinki and Helsinki University Hospital, 00290 Helsinki, Finland
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14
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Gaelings L, Söderholm S, Bugai A, Fu Y, Nandania J, Schepens B, Lorey MB, Tynell J, Vande Ginste L, Le Goffic R, Miller MS, Kuisma M, Marjomäki V, De Brabander J, Matikainen S, Nyman TA, Bamford DH, Saelens X, Julkunen I, Paavilainen H, Hukkanen V, Velagapudi V, Kainov DE. Regulation of kynurenine biosynthesis during influenza virus infection. FEBS J 2016; 284:222-236. [PMID: 27860276 DOI: 10.1111/febs.13966] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2016] [Revised: 11/08/2016] [Accepted: 11/15/2016] [Indexed: 01/03/2023]
Abstract
Influenza A viruses (IAVs) remain serious threats to public health because of the shortage of effective means of control. Developing more effective virus control modalities requires better understanding of virus-host interactions. It has previously been shown that IAV induces the production of kynurenine, which suppresses T-cell responses, enhances pain hypersensitivity and disturbs behaviour in infected animals. However, the regulation of kynurenine biosynthesis during IAV infection remains elusive. Here we showed that IAV infection induced expression of interferons (IFNs), which upregulated production of indoleamine-2,3-dioxygenase (IDO1), which catalysed the kynurenine biosynthesis. Furthermore, IAV attenuated the IDO1 expression and the production of kynurenine through its NS1 protein. Interestingly, inhibition of viral replication prior to IFN induction limited IDO1 expression, while inhibition after did not. Finally, we showed that kynurenine biosynthesis was activated in macrophages in response to other stimuli, such as influenza B virus, herpes simplex virus 1 and 2 as well as bacterial lipopolysaccharides. Thus, the tight regulation of the kynurenine biosynthesis by host cell and, perhaps, pathogen might be a basic signature of a wide range of host-pathogen interactions, which should be taken into account during development of novel antiviral and antibacterial drugs.
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Affiliation(s)
- Lana Gaelings
- Institute for Molecular Medicine Finland (FIMM), University of Helsinki, Finland
| | - Sandra Söderholm
- Institute of Biotechnology (BI), University of Helsinki, Finland.,Finnish Institute of Occupational Health (TTL), Helsinki, Finland
| | - Andrii Bugai
- Medicum, Department of Biochemistry and Developmental Biology, University of Helsinki, Finland
| | - Yu Fu
- Institute for Molecular Medicine Finland (FIMM), University of Helsinki, Finland
| | - Jatin Nandania
- Institute for Molecular Medicine Finland (FIMM), University of Helsinki, Finland
| | - Bert Schepens
- Medical Biotechnology Center, VIB, Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Belgium
| | - Martina B Lorey
- Finnish Institute of Occupational Health (TTL), Helsinki, Finland
| | - Janne Tynell
- National Institute for Health and Welfare (THL), Helsinki, Finland
| | - Liesbeth Vande Ginste
- Medicum, Department of Biochemistry and Developmental Biology, University of Helsinki, Finland.,Medical Biotechnology Center, VIB, Ghent, Belgium
| | - Ronan Le Goffic
- Centre de Recherche de Jouy-en-Josas UR0892 Unité VIM - Virologie & Immunologie Moléculaires, Domaine de Vilvert, Jouy-en-Josas, France
| | - Matthew S Miller
- Department of Biochemistry and Biomedical Sciences, Institute for Infectious Diseases Research, McMaster Immunology Research Centre, McMaster University, Hamilton, Ontario, Canada
| | - Marika Kuisma
- Medicum, Department of Biochemistry and Developmental Biology, University of Helsinki, Finland
| | - Varpu Marjomäki
- Department of Biological and Environmental Science, Nanoscience Center, University of Jyväskylä, Finland
| | - Jef De Brabander
- Department of Biochemistry, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | | | - Tuula A Nyman
- Institute of Clinical Medicine, Rikshospitalet, Oslo, Norway
| | - Dennis H Bamford
- Institute of Biotechnology (BI), University of Helsinki, Finland
| | - Xavier Saelens
- Medicum, Department of Biochemistry and Developmental Biology, University of Helsinki, Finland.,Medical Biotechnology Center, VIB, Ghent, Belgium
| | - Ilkka Julkunen
- National Institute for Health and Welfare (THL), Helsinki, Finland.,Department of Virology, University of Turku, Finland
| | | | | | - Vidya Velagapudi
- Institute for Molecular Medicine Finland (FIMM), University of Helsinki, Finland
| | - Denis E Kainov
- Institute for Molecular Medicine Finland (FIMM), University of Helsinki, Finland
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15
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Cypryk W, Lorey M, Puustinen A, Nyman TA, Matikainen S. Proteomic and Bioinformatic Characterization of Extracellular Vesicles Released from Human Macrophages upon Influenza A Virus Infection. J Proteome Res 2016; 16:217-227. [PMID: 27723984 DOI: 10.1021/acs.jproteome.6b00596] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Influenza A viruses (IAVs) are aggressive pathogens that cause acute respiratory diseases and annual epidemics in humans. Host defense against IAV infection is initiated by macrophages, which are the principal effector cells of the innate immune system. We have previously shown that IAV infection of human macrophages is associated with robust secretion of proteins via conventional and unconventional protein release pathways. Here we have characterized unconventional, extracellular vesicle (EV)-mediated protein secretion in human macrophages during IAV infection using proteomics, bioinformatics, and functional studies. We demonstrate that at 9 h postinfection a robust EV-mediated protein secretion takes place. We identified 2359 human proteins from EVs of IAV-infected macrophages compared with 1448 proteins identified from EVs of control cells. Bioinformatic analysis shows that many proteins involved in translation, like components of spliceosome machinery and the ribosome, are secreted in EVs in response to IAV infection. Our data also shows that EVs derived from IAV-infected macrophages contain fatty acid-binding proteins, antiviral cytokines, copper metabolism Murr-1 domain proteins, and autophagy-related proteins. In addition, our data suggest that secretory autophagy plays a role in activating EV-mediated protein secretion during IAV infection.
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Affiliation(s)
- Wojciech Cypryk
- Institute of Biotechnology, University of Helsinki , P.O. Box 56, 00014 Helsinki, Finland
| | - Martina Lorey
- University of Helsinki and Helsinki University Hospital, Rheumatology , 00029 Helsinki, Finland
| | - Anne Puustinen
- Finnish Institute of Occupational Health , Topeliuksenkatu 41 a A, 00250 Helsinki, Finland
| | - Tuula A Nyman
- Institute of Biotechnology, University of Helsinki , P.O. Box 56, 00014 Helsinki, Finland.,Institute of Clinical Medicine , Sognsvannsveien 20, Rikshospitalet, 0372 Oslo, Norway
| | - Sampsa Matikainen
- University of Helsinki and Helsinki University Hospital, Rheumatology , 00029 Helsinki, Finland
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16
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Söderholm S, Fu Y, Gaelings L, Belanov S, Yetukuri L, Berlinkov M, Cheltsov AV, Anders S, Aittokallio T, Nyman TA, Matikainen S, Kainov DE. Multi-Omics Studies towards Novel Modulators of Influenza A Virus-Host Interaction. Viruses 2016; 8:v8100269. [PMID: 27690086 PMCID: PMC5086605 DOI: 10.3390/v8100269] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2016] [Revised: 09/13/2016] [Accepted: 09/22/2016] [Indexed: 12/20/2022] Open
Abstract
Human influenza A viruses (IAVs) cause global pandemics and epidemics. These viruses evolve rapidly, making current treatment options ineffective. To identify novel modulators of IAV–host interactions, we re-analyzed our recent transcriptomics, metabolomics, proteomics, phosphoproteomics, and genomics/virtual ligand screening data. We identified 713 potential modulators targeting 199 cellular and two viral proteins. Anti-influenza activity for 48 of them has been reported previously, whereas the antiviral efficacy of the 665 remains unknown. Studying anti-influenza efficacy and immuno/neuro-modulating properties of these compounds and their combinations as well as potential viral and host resistance to them may lead to the discovery of novel modulators of IAV–host interactions, which might be more effective than the currently available anti-influenza therapeutics.
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Affiliation(s)
- Sandra Söderholm
- Institute of Biotechnology, University of Helsinki, Helsinki 00014, Finland.
- Finnish Institute of Occupational Health, Helsinki 00250, Finland.
| | - Yu Fu
- Institute for Molecular Medicine Finland (FIMM), University of Helsinki, Helsinki 00014, Finland.
| | - Lana Gaelings
- Institute for Molecular Medicine Finland (FIMM), University of Helsinki, Helsinki 00014, Finland.
| | - Sergey Belanov
- Institute for Molecular Medicine Finland (FIMM), University of Helsinki, Helsinki 00014, Finland.
| | - Laxman Yetukuri
- Institute for Molecular Medicine Finland (FIMM), University of Helsinki, Helsinki 00014, Finland.
| | - Mikhail Berlinkov
- Institute of Mathematics and Computer Science, Ural Federal University, Yekaterinburg 620083, Russia.
| | - Anton V Cheltsov
- Q-Mol L.L.C. in Silico Pharmaceuticals, San Diego, CA 92037, USA.
| | - Simon Anders
- Institute for Molecular Medicine Finland (FIMM), University of Helsinki, Helsinki 00014, Finland.
| | - Tero Aittokallio
- Institute for Molecular Medicine Finland (FIMM), University of Helsinki, Helsinki 00014, Finland.
- Department of Mathematics and Statistics, University of Turku, Turku 20014, Finland.
| | | | - Sampsa Matikainen
- Finnish Institute of Occupational Health, Helsinki 00250, Finland.
- Department of Rheumatology, Helsinki University Hospital, University of Helsinki, Helsinki 00015, Finland.
| | - Denis E Kainov
- Institute for Molecular Medicine Finland (FIMM), University of Helsinki, Helsinki 00014, Finland.
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17
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Nurmi K, Kareinen I, Virkanen J, Rajamäki K, Kouri VP, Vaali K, Levonen AL, Fyhrquist N, Matikainen S, Kovanen PT, Eklund KK. Hemin and Cobalt Protoporphyrin Inhibit NLRP3 Inflammasome Activation by Enhancing Autophagy: A Novel Mechanism of Inflammasome Regulation. J Innate Immun 2016; 9:65-82. [PMID: 27655219 DOI: 10.1159/000448894] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2015] [Accepted: 08/04/2016] [Indexed: 01/06/2023] Open
Abstract
Inflammasomes are intracellular protein platforms, which, upon activation, produce the highly proinflammatory cytokines interleukin (IL)-1β and IL-18. Heme, hemin and their degradation products possess significant immunomodulatory functions. Here, we studied whether hemin regulates inflammasome function in macrophages. Both hemin and its derivative, cobalt protoporphyrin (CoPP), significantly reduced IL-1β secretion by cultured human primary macrophages, the human monocytic leukemia cell line and also mouse bone marrow-derived and peritoneal macrophages. Intraperitoneal administration of CoPP to mice prior to urate crystal-induced peritonitis alleviated IL-1β secretion to the peritoneal cavity. In cultured macrophages, hemin and CoPP inhibited NLRP3 inflammasome assembly by reducing the amount of intracellular apoptosis-associated speck-like protein containing a caspase-recruitment domain (ASC). The reduction of ASC was associated with enhanced autophagosome formation and autophagic flux. Inhibition of autophagy prevented the CoPP-induced depletion of ASC, implying that the depletion was caused by increased autophagy. Our data indicate that hemin functions as an endogenous negative regulator of the NLRP3 inflammasome. The inhibition is mediated via enhanced autophagy that results in increased degradation of ASC. This regulatory mechanism may provide a novel approach for the treatment of inflammasome-related diseases.
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18
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Anastasina M, Le May N, Bugai A, Fu Y, Söderholm S, Gaelings L, Ohman T, Tynell J, Kyttänen S, Barboric M, Nyman TA, Matikainen S, Julkunen I, Butcher SJ, Egly JM, Kainov DE. Influenza virus NS1 protein binds cellular DNA to block transcription of antiviral genes. Biochim Biophys Acta 2016; 1859:1440-1448. [PMID: 27664935 DOI: 10.1016/j.bbagrm.2016.09.005] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/21/2016] [Revised: 08/26/2016] [Accepted: 09/19/2016] [Indexed: 11/25/2022]
Abstract
Influenza NS1 protein is an important virulence factor that is capable of binding double-stranded (ds) RNA and inhibiting dsRNA-mediated host innate immune responses. Here we show that NS1 can also bind cellular dsDNA. This interaction prevents loading of transcriptional machinery to the DNA, thereby attenuating IAV-mediated expression of antiviral genes. Thus, we identified a previously undescribed strategy, by which RNA virus inhibits cellular transcription to escape antiviral response and secure its replication.
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Affiliation(s)
- Maria Anastasina
- Institute for Molecular Medicine Finland (FIMM), University of Helsinki, Helsinki 00290, Finland; Institute of Biotechnology, University of Helsinki, 00014, Finland
| | - Nicolas Le May
- Department of Functional Genomics and Cancer, Institute for genetics, molecular and cellular biology (IGBMC), Strasbourg 67404, France
| | - Andrii Bugai
- Medicum, Department of Biochemistry and Developmental Biology, University of Helsinki, Helsinki FIN-00014, Finland
| | - Yu Fu
- Institute for Molecular Medicine Finland (FIMM), University of Helsinki, Helsinki 00290, Finland
| | - Sandra Söderholm
- Institute of Biotechnology, University of Helsinki, 00014, Finland
| | - Lana Gaelings
- Institute for Molecular Medicine Finland (FIMM), University of Helsinki, Helsinki 00290, Finland
| | - Tiina Ohman
- Institute of Biotechnology, University of Helsinki, 00014, Finland
| | - Janne Tynell
- National Institute for Health and Welfare (THL), Helsinki 00271, Finland
| | - Suvi Kyttänen
- Institute for Molecular Medicine Finland (FIMM), University of Helsinki, Helsinki 00290, Finland
| | - Matjaz Barboric
- Medicum, Department of Biochemistry and Developmental Biology, University of Helsinki, Helsinki FIN-00014, Finland
| | - Tuula A Nyman
- Institute of Biotechnology, University of Helsinki, 00014, Finland; Institute of Clinical Medicine, Sognsvannsveien 20, Rikshospitalet, 0372 Oslo, Norway
| | - Sampsa Matikainen
- Medicum, Department of Biochemistry and Developmental Biology, University of Helsinki, Helsinki FIN-00014, Finland
| | - Ilkka Julkunen
- National Institute for Health and Welfare (THL), Helsinki 00271, Finland; Department of Virology, University of Turku, Turku 20014, Finland
| | - Sarah J Butcher
- Institute of Biotechnology, University of Helsinki, 00014, Finland
| | - Jean-Marc Egly
- Department of Functional Genomics and Cancer, Institute for genetics, molecular and cellular biology (IGBMC), Strasbourg 67404, France.
| | - Denis E Kainov
- Institute for Molecular Medicine Finland (FIMM), University of Helsinki, Helsinki 00290, Finland.
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19
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Välimäki E, Cypryk W, Virkanen J, Nurmi K, Turunen PM, Eklund KK, Åkerman KE, Nyman TA, Matikainen S. Calpain Activity Is Essential for ATP-Driven Unconventional Vesicle-Mediated Protein Secretion and Inflammasome Activation in Human Macrophages. J Immunol 2016; 197:3315-3325. [PMID: 27638862 DOI: 10.4049/jimmunol.1501840] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Received: 08/20/2015] [Accepted: 08/21/2016] [Indexed: 12/22/2022]
Abstract
Extracellular ATP is an endogenous danger signal that is known to activate inflammatory responses in innate immune cells, including macrophages. Activated macrophages start to secrete proteins to induce an immune response, as well as to recruit other immune cells to the site of infection and tissue damage. In this study, we characterized the secretome (i.e., the global pattern of secreted proteins) of ATP-stimulated human macrophages. We show that ATP stimulation activates robust vesicle-mediated unconventional protein secretion, including exosome release and membrane shedding, from human macrophages. Pathway analysis of the identified secreted proteins showed that calpain-related pathways were overrepresented in the secretome of ATP-stimulated cells. In accordance with this, calpains, which are calcium-dependent nonlysosomal cysteine proteases, were activated upon ATP stimulation through a P2X purinoceptor 7 receptor-dependent pathway. Functional studies demonstrated that calpain activity is essential for the P2X purinoceptor 7 receptor-mediated activation of unconventional protein secretion. Unconventional protein secretion was followed by cell necrosis and NLRP3 inflammasome-mediated secretion of the mature form of the proinflammatory cytokine IL-1β. Furthermore, ATP-driven NLRP3 inflammasome activation was also dependent on calpain activity. Interestingly, pro-IL-1β and inflammasome components ASC and caspase-1 were released by ATP-activated macrophages through a vesicle-mediated secretion pathway. In conclusion, to our knowledge, we provide the first global characterization of proteins secreted by ATP-activated human macrophages and show a pivotal role for calpains in the activation of the inflammatory response during ATP exposure.
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Affiliation(s)
- Elina Välimäki
- Institute of Biotechnology, University of Helsinki, 00014 Helsinki, Finland.,Finnish Institute of Occupational Health, 00250 Helsinki, Finland
| | - Wojciech Cypryk
- Institute of Biotechnology, University of Helsinki, 00014 Helsinki, Finland
| | - Juhani Virkanen
- Department of Geosciences and Geography, University of Helsinki, 00014 Helsinki, Finland
| | - Katariina Nurmi
- Division of Rheumatology, Helsinki University Hospital, Helsinki University, 00015 Helsinki, Finland; and
| | - Pauli M Turunen
- Department of Physiology, Institute of Biomedicine, Biomedicum Helsinki, University of Helsinki, 00014 Helsinki, Finland
| | - Kari K Eklund
- Division of Rheumatology, Helsinki University Hospital, Helsinki University, 00015 Helsinki, Finland; and
| | - Karl E Åkerman
- Department of Physiology, Institute of Biomedicine, Biomedicum Helsinki, University of Helsinki, 00014 Helsinki, Finland
| | - Tuula A Nyman
- Institute of Biotechnology, University of Helsinki, 00014 Helsinki, Finland
| | - Sampsa Matikainen
- Finnish Institute of Occupational Health, 00250 Helsinki, Finland; .,Division of Rheumatology, Helsinki University Hospital, Helsinki University, 00015 Helsinki, Finland; and
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20
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Söderholm S, Kainov DE, Öhman T, Denisova OV, Schepens B, Kulesskiy E, Imanishi SY, Corthals G, Hintsanen P, Aittokallio T, Saelens X, Matikainen S, Nyman TA. Phosphoproteomics to Characterize Host Response During Influenza A Virus Infection of Human Macrophages. Mol Cell Proteomics 2016; 15:3203-3219. [PMID: 27486199 DOI: 10.1074/mcp.m116.057984] [Citation(s) in RCA: 56] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2016] [Indexed: 12/18/2022] Open
Abstract
Influenza A viruses cause infections in the human respiratory tract and give rise to annual seasonal outbreaks, as well as more rarely dreaded pandemics. Influenza A viruses become quickly resistant to the virus-directed antiviral treatments, which are the current main treatment options. A promising alternative approach is to target host cell factors that are exploited by influenza viruses. To this end, we characterized the phosphoproteome of influenza A virus infected primary human macrophages to elucidate the intracellular signaling pathways and critical host factors activated upon influenza infection. We identified 1675 phosphoproteins, 4004 phosphopeptides and 4146 nonredundant phosphosites. The phosphorylation of 1113 proteins (66%) was regulated upon infection, highlighting the importance of such global phosphoproteomic profiling in primary cells. Notably, 285 of the identified phosphorylation sites have not been previously described in publicly available phosphorylation databases, despite many published large-scale phosphoproteome studies using human and mouse cell lines. Systematic bioinformatics analysis of the phosphoproteome data indicated that the phosphorylation of proteins involved in the ubiquitin/proteasome pathway (such as TRIM22 and TRIM25) and antiviral responses (such as MAVS) changed in infected macrophages. Proteins known to play roles in small GTPase-, mitogen-activated protein kinase-, and cyclin-dependent kinase- signaling were also regulated by phosphorylation upon infection. In particular, the influenza infection had a major influence on the phosphorylation profiles of a large number of cyclin-dependent kinase substrates. Functional studies using cyclin-dependent kinase inhibitors showed that the cyclin-dependent kinase activity is required for efficient viral replication and for activation of the host antiviral responses. In addition, we show that cyclin-dependent kinase inhibitors protect IAV-infected mice from death. In conclusion, we provide the first comprehensive phosphoproteome characterization of influenza A virus infection in primary human macrophages, and provide evidence that cyclin-dependent kinases represent potential therapeutic targets for more effective treatment of influenza infections.
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Affiliation(s)
- Sandra Söderholm
- From the ‡Institute of Biotechnology, FI-00014 University of Helsinki, Helsinki, Finland; §Unit of Systems Toxicology, Finnish Institute of Occupational Health, FI-00250 Helsinki, Finland
| | - Denis E Kainov
- ¶Institute for Molecular Medicine Finland (FIMM), FI-00014 University of Helsinki, Helsinki, Finland
| | - Tiina Öhman
- From the ‡Institute of Biotechnology, FI-00014 University of Helsinki, Helsinki, Finland
| | - Oxana V Denisova
- ¶Institute for Molecular Medicine Finland (FIMM), FI-00014 University of Helsinki, Helsinki, Finland
| | - Bert Schepens
- ‖Medical Biotechnology Center, VIB, B-9052 Ghent (Zwijnaarde), Belgium; **Department of Biomedical Molecular Biology, B-9052 Ghent University, Ghent, Belgium
| | - Evgeny Kulesskiy
- ¶Institute for Molecular Medicine Finland (FIMM), FI-00014 University of Helsinki, Helsinki, Finland
| | - Susumu Y Imanishi
- ‡‡Turku Centre for Biotechnology, University of Turku and Åbo Akademi University, FI-20520 Turku, Finland
| | - Garry Corthals
- ‡‡Turku Centre for Biotechnology, University of Turku and Åbo Akademi University, FI-20520 Turku, Finland
| | - Petteri Hintsanen
- ¶Institute for Molecular Medicine Finland (FIMM), FI-00014 University of Helsinki, Helsinki, Finland
| | - Tero Aittokallio
- ¶Institute for Molecular Medicine Finland (FIMM), FI-00014 University of Helsinki, Helsinki, Finland
| | - Xavier Saelens
- ‖Medical Biotechnology Center, VIB, B-9052 Ghent (Zwijnaarde), Belgium; **Department of Biomedical Molecular Biology, B-9052 Ghent University, Ghent, Belgium
| | - Sampsa Matikainen
- §§Department of Rheumatology, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | - Tuula A Nyman
- From the ‡Institute of Biotechnology, FI-00014 University of Helsinki, Helsinki, Finland; ¶¶Institute of Clinical Medicine, University of Oslo, Norway
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21
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Christensen MH, Jensen SB, Miettinen JJ, Luecke S, Prabakaran T, Reinert LS, Mettenleiter T, Chen ZJ, Knipe DM, Sandri-Goldin RM, Enquist LW, Hartmann R, Mogensen TH, Rice SA, Nyman TA, Matikainen S, Paludan SR. HSV-1 ICP27 targets the TBK1-activated STING signalsome to inhibit virus-induced type I IFN expression. EMBO J 2016; 35:1385-99. [PMID: 27234299 DOI: 10.15252/embj.201593458] [Citation(s) in RCA: 159] [Impact Index Per Article: 19.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2015] [Accepted: 04/26/2016] [Indexed: 01/04/2023] Open
Abstract
Herpes simplex virus (HSV) 1 stimulates type I IFN expression through the cGAS-STING-TBK1 signaling axis. Macrophages have recently been proposed to be an essential source of IFN during viral infection. However, it is not known how HSV-1 inhibits IFN expression in this cell type. Here, we show that HSV-1 inhibits type I IFN induction through the cGAS-STING-TBK1 pathway in human macrophages, in a manner dependent on the conserved herpesvirus protein ICP27. This viral protein was expressed de novo in macrophages with early nuclear localization followed by later translocation to the cytoplasm where ICP27 prevented activation of IRF3. ICP27 interacted with TBK1 and STING in a manner that was dependent on TBK1 activity and the RGG motif in ICP27. Thus, HSV-1 inhibits expression of type I IFN in human macrophages through ICP27-dependent targeting of the TBK1-activated STING signalsome.
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Affiliation(s)
- Maria H Christensen
- Department of Biomedicine, University of Aarhus, Aarhus, Denmark Aarhus Research Center for Innate Immunology, University of Aarhus, Aarhus, Denmark
| | - Søren B Jensen
- Department of Biomedicine, University of Aarhus, Aarhus, Denmark Aarhus Research Center for Innate Immunology, University of Aarhus, Aarhus, Denmark
| | | | - Stefanie Luecke
- Department of Biomedicine, University of Aarhus, Aarhus, Denmark Aarhus Research Center for Innate Immunology, University of Aarhus, Aarhus, Denmark
| | - Thaneas Prabakaran
- Department of Biomedicine, University of Aarhus, Aarhus, Denmark Aarhus Research Center for Innate Immunology, University of Aarhus, Aarhus, Denmark
| | - Line S Reinert
- Department of Biomedicine, University of Aarhus, Aarhus, Denmark Aarhus Research Center for Innate Immunology, University of Aarhus, Aarhus, Denmark
| | | | - Zhijian J Chen
- Department of Molecular Biology, University of Texas Southwestern Medical Center, Dallas, TX, USA Howard Hughes Medical Institute, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - David M Knipe
- Department of Microbiology and Immunobiology, Harvard Medical School, Boston, MA, USA
| | | | | | - Rune Hartmann
- Department of Biomedicine, University of Aarhus, Aarhus, Denmark Aarhus Research Center for Innate Immunology, University of Aarhus, Aarhus, Denmark Department of Molecular Biology and Genetics, Aarhus Research Center for Innate Immunity, Aarhus University, Aarhus, Denmark
| | - Trine H Mogensen
- Department of Biomedicine, University of Aarhus, Aarhus, Denmark Aarhus Research Center for Innate Immunology, University of Aarhus, Aarhus, Denmark Aarhus University Hospital Skejby, Aarhus, Denmark
| | - Stephen A Rice
- Department of Microbiology, University of Minnesota Medical School, Minneapolis, MN, USA
| | | | | | - Søren R Paludan
- Department of Biomedicine, University of Aarhus, Aarhus, Denmark Aarhus Research Center for Innate Immunology, University of Aarhus, Aarhus, Denmark
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22
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Matikainen S, Jokiranta S, Eklund KK. [Role of cytokines and their blocking in immune-mediated inflammatory diseases]. Duodecim 2016; 132:349-354. [PMID: 27017787] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Rheumatoid arthritis, inflammatory bowel diseases and psoriasis are examples of immune-mediated inflammatory diseases. They involve activation of a partly similar cytokine network that has an essential role in the disease pathogenesis. Biological drugs have been developed for the inhibition of single cytokines, and good therapeutic responses have been achieved by using them. For instance, TNF blockers are used in the treatment of several inflammatory diseases. The use of the blockers of certain other cytokines is more limited. Other important target molecules include certain interleukins. New bispecific antibodies enabling inhibition of the action of two distinct cytokines are currently undergoing clinical studies.
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23
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Söderholm S, Anastasina M, Islam MM, Tynell J, Poranen MM, Bamford DH, Stenman J, Julkunen I, Šaulienė I, De Brabander JK, Matikainen S, Nyman TA, Saelens X, Kainov D. Immuno-modulating properties of saliphenylhalamide, SNS-032, obatoclax, and gemcitabine. Antiviral Res 2015; 126:69-80. [PMID: 26738783 DOI: 10.1016/j.antiviral.2015.12.011] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2015] [Revised: 12/21/2015] [Accepted: 12/24/2015] [Indexed: 12/24/2022]
Abstract
Influenza A viruses (IAVs) impact the public health and global economy by causing yearly epidemics and occasional pandemics. Several anti-IAV drugs are available and many are in development. However, the question remains which of these antiviral agents may allow activation of immune responses and protect patients against co- and re-infections. To answer to this question, we analysed immuno-modulating properties of the antivirals saliphenylhalamide (SaliPhe), SNS-032, obatoclax, and gemcitabine, and found that only gemcitabine did not impair immune responses in infected cells. It also allowed activation of innate immune responses in lipopolysaccharide (LPS)- and interferon alpha (IFNα)-stimulated macrophages. Moreover, immuno-mediators produced by gemcitabine-treated IAV-infected macrophages were able to prime immune responses in non-infected cells. Thus, we identified an antiviral agent which might be beneficial for treatment of patients with severe viral infections.
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Affiliation(s)
- Sandra Söderholm
- Institute of Biotechnology, University of Helsinki, Finland; Finnish Institute of Occupational Health (TTL), Helsinki, Finland
| | - Maria Anastasina
- The Institute for Molecular Medicine Finland, FIMM, University of Helsinki, Finland
| | | | - Janne Tynell
- National Institute for Health and Welfare (THL), Helsinki, Finland
| | | | - Dennis H Bamford
- Institute of Biotechnology, University of Helsinki, Finland; Department of Biosciences, University of Helsinki, Finland
| | - Jakob Stenman
- Minerva Foundation Institute for Medical Research, Helsinki, Finland
| | - Ilkka Julkunen
- National Institute for Health and Welfare (THL), Helsinki, Finland; Department of Virology, University of Turku, Turku, Finland
| | - Ingrida Šaulienė
- Department of Environmental Research, Siauliai University, Siauliai, Lithuania
| | - Jef K De Brabander
- Department of Biochemistry, University of Texas Southwestern Medical Center, Dallas, USA
| | | | - Tuula A Nyman
- Institute of Biotechnology, University of Helsinki, Finland
| | - Xavier Saelens
- Medical Biotechnology Center, VIB, Ghent, Belgium; Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Denis Kainov
- The Institute for Molecular Medicine Finland, FIMM, University of Helsinki, Finland; Department of Virology, University of Turku, Turku, Finland.
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24
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Anastasina M, Schepens B, Söderholm S, Nyman TA, Matikainen S, Saksela K, Saelens X, Kainov DE. The C terminus of NS1 protein of influenza A/WSN/1933(H1N1) virus modulates antiviral responses in infected human macrophages and mice. J Gen Virol 2015; 96:2086-2091. [PMID: 25934792 DOI: 10.1099/vir.0.000171] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
Non-structural protein NS1 of influenza A viruses interacts with cellular factors through its N-terminal RNA-binding, middle effector and C-terminal non-structured domains. NS1 attenuates antiviral responses in infected cells and thereby secures efficient virus replication. Some influenza strains express C-terminally truncated NS1 proteins due to nonsense mutations in the NS1 gene. To understand the role of the NS1 C-terminal region in regulation of antiviral responses, we engineered influenza viruses expressing C-terminally truncated NS1 proteins using A/WSN/33(H1N1) reverse genetics and tested them in human macrophages and in mice. We showed that a WSN virus expressing NS1 with a 28 aa deletion from its C terminus is a more powerful inducer of antiviral responses than the virus expressing full-length NS1, or one with a 10 aa truncation of NS1 in vitro. Thus, our findings suggest that the C-terminal region of NS1 is essential for regulation of antiviral responses. Moreover, viruses expressing truncated NS1 proteins could be good vaccine candidates.
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Affiliation(s)
- Maria Anastasina
- Institute for Molecular Medicine Finland (FIMM), University of Helsinki, Helsinki 00290, Finland
| | - Bert Schepens
- Inflammation Research Center, VIB, Ghent 9000, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Ghent 9000, Belgium
| | - Sandra Söderholm
- Unit of Systems Toxicology, Finnish Institute of Occupational Health, Helsinki 00250, Finland.,The Institute of Biotechnology, University of Helsinki, FI- 00014, Finland
| | - Tuula A Nyman
- The Institute of Biotechnology, University of Helsinki, FI- 00014, Finland
| | - Sampsa Matikainen
- Unit of Systems Toxicology, Finnish Institute of Occupational Health, Helsinki 00250, Finland
| | - Kalle Saksela
- Department of Virology, Haartman Institute, University of Helsinki, Finland
| | - Xavier Saelens
- Inflammation Research Center, VIB, Ghent 9000, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Ghent 9000, Belgium
| | - Denis E Kainov
- Institute for Molecular Medicine Finland (FIMM), University of Helsinki, Helsinki 00290, Finland
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25
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Öhman T, Söderholm S, Paidikondala M, Lietzén N, Matikainen S, Nyman TA. Phosphoproteome characterization reveals that Sendai virus infection activates mTOR signaling in human epithelial cells. Proteomics 2015; 15:2087-97. [PMID: 25764225 DOI: 10.1002/pmic.201400586] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2014] [Revised: 02/24/2015] [Accepted: 03/06/2015] [Indexed: 12/12/2022]
Abstract
Sendai virus (SeV) is a common respiratory pathogen in mice, rats, and hamsters. Host cell recognition of SeV is mediated by pathogen recognition receptors, which recognize viral components and induce intracellular signal transduction pathways that activate the antiviral innate immune response. Viruses use host proteins to control the activities of signaling proteins and their downstream targets, and one of the most important host protein modifications regulated by viral infection is phosphorylation. In this study, we used phosphoproteomics combined with bioinformatics to get a global view of the signaling pathways activated during SeV infection in human lung epithelial cells. We identified altogether 1347 phosphoproteins, and our data shows that SeV infection induces major changes in protein phosphorylation affecting the phosphorylation of almost one thousand host proteins. Bioinformatics analysis showed that SeV infection activates known pathways including MAPK signaling, as well as signaling pathways previously not linked to SeV infection including Rho family of GTPases, HIPPO signaling, and mammalian target of rapamycin (mTOR)-signaling pathway. Further, we performed functional studies with mTOR inhibitors and siRNA approach, which revealed that mTOR signaling is needed for both the host IFN response as well as viral protein synthesis in SeV-infected human lung epithelial cells.
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Affiliation(s)
- Tiina Öhman
- Institute of Biotechnology, University of Helsinki, Helsinki, Finland
| | - Sandra Söderholm
- Institute of Biotechnology, University of Helsinki, Helsinki, Finland.,Finnish Institute of Occupational Health, Helsinki, Finland
| | | | - Niina Lietzén
- Institute of Biotechnology, University of Helsinki, Helsinki, Finland
| | | | - Tuula A Nyman
- Institute of Biotechnology, University of Helsinki, Helsinki, Finland
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26
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Bramante S, Kaufmann JK, Veckman V, Liikanen I, Nettelbeck DM, Hemminki O, Vassilev L, Cerullo V, Oksanen M, Heiskanen R, Joensuu T, Kanerva A, Pesonen S, Matikainen S, Vähä-Koskela M, Koski A, Hemminki A. Treatment of melanoma with a serotype 5/3 chimeric oncolytic adenovirus coding for GM-CSF: Results in vitro, in rodents and in humans. Int J Cancer 2015; 137:1775-83. [PMID: 25821063 DOI: 10.1002/ijc.29536] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2014] [Accepted: 02/20/2015] [Indexed: 12/26/2022]
Abstract
Metastatic melanoma is refractory to irradiation and chemotherapy, but amenable to immunological approaches such as immune-checkpoint-inhibiting antibodies or adoptive cell therapies. Oncolytic virus replication is an immunogenic phenomenon, and viruses can be armed with immunostimulatory molecules. Therefore, oncolytic immuno-virotherapy of malignant melanoma is an appealing approach, which was recently validated by a positive phase 3 trial. We investigated the potency of oncolytic adenovirus Ad5/3-D24-GMCSF on a panel of melanoma cell lines and animal models, and summarized the melanoma-specific human data from the Advanced Therapy Access Program (ATAP). The virus effectively eradicated human melanoma cells in vitro and subcutaneous SK-MEL-28 melanoma xenografts in nude mice when combined with low-dose cyclophosphamide. Furthermore, virally-expressed granulocyte-macrophage colony-stimulating factor (GM-CSF) stimulated the differentiation of human monocytes into macrophages. In contrast to human cells, RPMI 1846 hamster melanoma cells exhibited no response to oncolytic viruses and the chimeric 5/3 fiber failed to increase the efficacy of transduction, suggesting limited utility of the hamster model in the context of viruses with this capsid. In ATAP, treatments appeared safe and well-tolerated. Four out of nine melanoma patients treated were evaluable for possible therapy benefit with modified RECIST criteria: one patient had minor response, two had stable disease, and one had progressive disease. Two patients were alive at 559 and 2,149 days after treatment. Ad5/3-D24-GMCSF showed promising efficacy in preclinical studies and possible antitumor activity in melanoma patients refractory to other forms of therapy. This data supports continuing the clinical development of oncolytic adenoviruses for treatment of malignant melanoma.
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Affiliation(s)
- Simona Bramante
- Cancer Gene Therapy Group, Department of Pathology and Transplantation Laboratory and Haartman Institute, University of Helsinki, Finland
| | - Johanna K Kaufmann
- Oncolytic Adenovirus Group, German Cancer Research Center (Deutsches Krebsforschungszentrum [DKFZ]), Heidelberg, Germany
| | - Ville Veckman
- Unit of Systems Toxicology, Finnish Institute of Occupational Health, Topeliuksenkatu 41 a, Helsinki, Finland
| | - Ilkka Liikanen
- Cancer Gene Therapy Group, Department of Pathology and Transplantation Laboratory and Haartman Institute, University of Helsinki, Finland
| | - Dirk M Nettelbeck
- Oncolytic Adenovirus Group, German Cancer Research Center (Deutsches Krebsforschungszentrum [DKFZ]), Heidelberg, Germany
| | - Otto Hemminki
- Cancer Gene Therapy Group, Department of Pathology and Transplantation Laboratory and Haartman Institute, University of Helsinki, Finland
| | | | - Vincenzo Cerullo
- Cancer Gene Therapy Group, Department of Pathology and Transplantation Laboratory and Haartman Institute, University of Helsinki, Finland.,Laboratory of Immunovirotherapy, Division of Biopharmaceutics and Pharmacokinetics, Faculty of Pharmacy, University of Helsinki, Finland
| | - Minna Oksanen
- Cancer Gene Therapy Group, Department of Pathology and Transplantation Laboratory and Haartman Institute, University of Helsinki, Finland
| | | | | | - Anna Kanerva
- Cancer Gene Therapy Group, Department of Pathology and Transplantation Laboratory and Haartman Institute, University of Helsinki, Finland.,Department of Obstetrics and Gynecology, Helsinki University Central Hospital, Helsinki, Finland
| | - Sari Pesonen
- Cancer Gene Therapy Group, Department of Pathology and Transplantation Laboratory and Haartman Institute, University of Helsinki, Finland
| | - Sampsa Matikainen
- Unit of Systems Toxicology, Finnish Institute of Occupational Health, Topeliuksenkatu 41 a, Helsinki, Finland
| | - Markus Vähä-Koskela
- Cancer Gene Therapy Group, Department of Pathology and Transplantation Laboratory and Haartman Institute, University of Helsinki, Finland
| | - Anniina Koski
- Cancer Gene Therapy Group, Department of Pathology and Transplantation Laboratory and Haartman Institute, University of Helsinki, Finland
| | - Akseli Hemminki
- Cancer Gene Therapy Group, Department of Pathology and Transplantation Laboratory and Haartman Institute, University of Helsinki, Finland.,TILT Biotherapeutics Ltd., Helsinki, Finland
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27
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Rydman EM, Ilves M, Koivisto AJ, Kinaret PAS, Fortino V, Savinko TS, Lehto MT, Pulkkinen V, Vippola M, Hämeri KJ, Matikainen S, Wolff H, Savolainen KM, Greco D, Alenius H. Inhalation of rod-like carbon nanotubes causes unconventional allergic airway inflammation. Part Fibre Toxicol 2014; 11:48. [PMID: 25318534 PMCID: PMC4215016 DOI: 10.1186/s12989-014-0048-2] [Citation(s) in RCA: 70] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2014] [Accepted: 08/27/2014] [Indexed: 12/28/2022] Open
Abstract
Background Carbon nanotubes (CNT) represent a great promise for technological and industrial development but serious concerns on their health effects have also emerged. Rod-shaped CNT are, in fact, able to induce asbestos-like pathogenicity in mice including granuloma formation in abdominal cavity and sub-pleural fibrosis. Exposure to CNT, especially in the occupational context, happens mainly by inhalation. However, little is known about the possible effects of CNT on pulmonary allergic diseases, such as asthma. Methods We exposed mice by inhalation to two types of multi-walled CNT, rigid rod-like and flexible tangled CNT, for four hours a day once or on four consecutive days. Early events were monitored immediately and 24 hours after the single inhalation exposure and the four day exposure mimicked an occupational work week. Mast cell deficient mice were used to evaluate the role of mast cells in the occurring inflammation. Results Here we show that even a short-term inhalation of the rod-like CNT induces novel innate immunity-mediated allergic-like airway inflammation in healthy mice. Marked eosinophilia was accompanied by mucus hypersecretion, AHR and the expression of Th2-type cytokines. Exploration of the early events by transcriptomics analysis reveals that a single 4-h exposure to rod-shaped CNT, but not to tangled CNT, causes a radical up-regulation of genes involved in innate immunity and cytokine/chemokine pathways. Mast cells were found to partially regulate the inflammation caused by rod-like CNT, but also alveaolar macrophages play an important role in the early stages. Conclusions These observations emphasize the diverse abilities of CNT to impact the immune system, and they should be taken into account for hazard assessment. Electronic supplementary material The online version of this article (doi:10.1186/s12989-014-0048-2) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Elina M Rydman
- Nanosafety Research Centre, Finnish Institute of Occupational Health, Helsinki, Finland.
| | - Marit Ilves
- Nanosafety Research Centre, Finnish Institute of Occupational Health, Helsinki, Finland.
| | - Antti J Koivisto
- Nanosafety Research Centre, Finnish Institute of Occupational Health, Helsinki, Finland.
| | - Pia A S Kinaret
- Nanosafety Research Centre, Finnish Institute of Occupational Health, Helsinki, Finland.
| | - Vittorio Fortino
- Nanosafety Research Centre, Finnish Institute of Occupational Health, Helsinki, Finland.
| | - Terhi S Savinko
- Nanosafety Research Centre, Finnish Institute of Occupational Health, Helsinki, Finland.
| | - Maili T Lehto
- Nanosafety Research Centre, Finnish Institute of Occupational Health, Helsinki, Finland.
| | - Ville Pulkkinen
- Pulmonary Division, Department of Medicine, University of Helsinki, Helsinki, Finland.
| | - Minnamari Vippola
- Nanosafety Research Centre, Finnish Institute of Occupational Health, Helsinki, Finland. .,Department of Materials Science, Tampere University of Technology, Tampere, Finland.
| | - Kaarle J Hämeri
- Department of Physics, University of Helsinki, Helsinki, Finland.
| | - Sampsa Matikainen
- Nanosafety Research Centre, Finnish Institute of Occupational Health, Helsinki, Finland.
| | - Henrik Wolff
- Nanosafety Research Centre, Finnish Institute of Occupational Health, Helsinki, Finland.
| | - Kai M Savolainen
- Nanosafety Research Centre, Finnish Institute of Occupational Health, Helsinki, Finland.
| | - Dario Greco
- Nanosafety Research Centre, Finnish Institute of Occupational Health, Helsinki, Finland.
| | - Harri Alenius
- Nanosafety Research Centre, Finnish Institute of Occupational Health, Helsinki, Finland.
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28
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Öhman T, Söderholm S, Hintsanen P, Välimäki E, Lietzén N, MacKintosh C, Aittokallio T, Matikainen S, Nyman TA. Phosphoproteomics combined with quantitative 14-3-3-affinity capture identifies SIRT1 and RAI as novel regulators of cytosolic double-stranded RNA recognition pathway. Mol Cell Proteomics 2014; 13:2604-17. [PMID: 24997996 DOI: 10.1074/mcp.m114.038968] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
Viral double-stranded RNA (dsRNA) is the most important viral structure recognized by cytosolic pattern-recognition receptors of the innate immune system, and its recognition results in the activation of signaling cascades that stimulate the production of antiviral cytokines and apoptosis of infected cells. 14-3-3 proteins are ubiquitously expressed regulatory molecules that participate in a variety of cellular processes, and 14-3-3 protein-mediated signaling pathways are activated by cytoplasmic dsRNA in human keratinocytes. However, the functional role of 14-3-3 protein-mediated interactions during viral dsRNA stimulation has remained uncharacterized. Here, we used functional proteomics to identify proteins whose phosphorylation and interaction with 14-3-3 is modulated by dsRNA and to characterize the signaling pathways activated during cytosolic dsRNA-induced innate immune response in human HaCaT keratinocytes. Phosphoproteome analysis showed that several MAPK- and immune-response-related signaling pathways were activated after dsRNA stimulation. Interactome analysis identified RelA-associated inhibitor, high-mobility group proteins, and several proteins associated with host responses to viral infection as novel 14-3-3 target proteins. Functional studies showed that RelA-associated inhibitor regulated dsRNA-induced apoptosis and TNF production. Integrated network analyses of proteomic data revealed that sirtuin1 was a central molecule regulated by 14-3-3s during dsRNA stimulation. Further experiments showed that sirtuin 1 negatively regulated dsRNA-induced NFκB transcriptional activity, suppressed expression of antiviral cytokines, and protected cells from apoptosis in dsRNA-stimulated and encephalomyocarditis-virus-infected keratinocytes. In conclusion, our data highlight the importance of 14-3-3 proteins in antiviral responses and identify RelA-associated inhibitor and sirtuin 1 as novel regulators of antiviral innate immune responses.
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Affiliation(s)
- Tiina Öhman
- From the ‡Institute of Biotechnology, FI-00014 University of Helsinki, Helsinki, Finland
| | - Sandra Söderholm
- From the ‡Institute of Biotechnology, FI-00014 University of Helsinki, Helsinki, Finland; §Finnish Institute of Occupational Health, FI-00250 Helsinki, Finland
| | - Petteri Hintsanen
- ¶Institute for Molecular Medicine Finland (FIMM), FI-00014 University of Helsinki, Helsinki, Finland
| | - Elina Välimäki
- From the ‡Institute of Biotechnology, FI-00014 University of Helsinki, Helsinki, Finland; §Finnish Institute of Occupational Health, FI-00250 Helsinki, Finland
| | - Niina Lietzén
- From the ‡Institute of Biotechnology, FI-00014 University of Helsinki, Helsinki, Finland
| | - Carol MacKintosh
- **University of Dundee, Dundee, Scotland DD1 5EH, United Kingdom
| | - Tero Aittokallio
- ¶Institute for Molecular Medicine Finland (FIMM), FI-00014 University of Helsinki, Helsinki, Finland
| | - Sampsa Matikainen
- §Finnish Institute of Occupational Health, FI-00250 Helsinki, Finland
| | - Tuula A Nyman
- From the ‡Institute of Biotechnology, FI-00014 University of Helsinki, Helsinki, Finland;
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29
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Öhman T, Teirilä L, Lahesmaa-Korpinen AM, Cypryk W, Veckman V, Saijo S, Wolff H, Hautaniemi S, Nyman TA, Matikainen S. Dectin-1 pathway activates robust autophagy-dependent unconventional protein secretion in human macrophages. J Immunol 2014; 192:5952-62. [PMID: 24808366 DOI: 10.4049/jimmunol.1303213] [Citation(s) in RCA: 65] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Dectin-1 is a membrane-bound pattern recognition receptor for β-glucans, which are the main constituents of fungal cell walls. Detection of β-glucans by dectin-1 triggers an effective innate immune response. In this study, we have used a systems biology approach to provide the first comprehensive characterization of the secretome and associated intracellular signaling pathways involved in activation of dectin-1/Syk in human macrophages. Transcriptome and secretome analysis revealed that the dectin-1 pathway induced significant gene expression changes and robust protein secretion in macrophages. The enhanced protein secretion correlated only partly with increased gene expression. Bioinformatics combined with functional studies revealed that the dectin-1/Syk pathway activates both conventional and unconventional, vesicle-mediated, protein secretion. The unconventional protein secretion triggered by the dectin-1 pathway is dependent on inflammasome activity and an active autophagic process. In conclusion, our results reveal that unconventional protein secretion has an important role in the innate immune response against fungal infections.
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Affiliation(s)
- Tiina Öhman
- Institute of Biotechnology, University of Helsinki, 00014 Helsinki, Finland
| | - Laura Teirilä
- Finnish Institute of Occupational Health, 00250 Helsinki, Finland
| | - Anna-Maria Lahesmaa-Korpinen
- Computational Systems Biology Laboratory, Institute of Biomedicine, Genome-Scale Biology Research Program, Faculty of Medicine, University of Helsinki, 00014 Helsinki, Finland
| | - Wojciech Cypryk
- Institute of Biotechnology, University of Helsinki, 00014 Helsinki, Finland
| | - Ville Veckman
- Finnish Institute of Occupational Health, 00250 Helsinki, Finland
| | - Shinobu Saijo
- Department of Molecular Immunology, Medical Mycology Research Center, Chiba University, Chiba 260-8673, Japan; and Presto, Japan Science and Technology Agency, Saitama 332-0012, Japan
| | - Henrik Wolff
- Finnish Institute of Occupational Health, 00250 Helsinki, Finland
| | - Sampsa Hautaniemi
- Computational Systems Biology Laboratory, Institute of Biomedicine, Genome-Scale Biology Research Program, Faculty of Medicine, University of Helsinki, 00014 Helsinki, Finland
| | - Tuula A Nyman
- Institute of Biotechnology, University of Helsinki, 00014 Helsinki, Finland
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30
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Cypryk W, Ohman T, Eskelinen EL, Matikainen S, Nyman TA. Quantitative proteomics of extracellular vesicles released from human monocyte-derived macrophages upon β-glucan stimulation. J Proteome Res 2014; 13:2468-77. [PMID: 24670152 DOI: 10.1021/pr4012552] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Fungal infections (mycoses) are common diseases of varying severity that cause problems, especially to immunologically compromised people. Fungi express a variety of pathogen-associated molecular patterns on their surface including β-glucans, which are important immunostimulatory components of fungal cell walls. During stimulatory conditions of infection and colonization, besides intensive intracellular response, human cells actively communicate on the intercellular level by secreting proteins and other biomolecules with several mechanisms. Vesicular secretion remains one of the most important paths for the proteins to exit the cell. Here, we have used high-throughput quantitative proteomics combined with bioinformatics to characterize and quantify vesicle-mediated protein release from β-glucan-stimulated human macrophages differentiated in vitro from primary blood monocytes. We show that β-glucan stimulation induces vesicle-mediated protein secretion. Proteomic study identified 540 distinct proteins from the vesicles, and the identified proteins show a proteomic signature characteristic for their cellular origin. Importantly, we identified several receptors, including cation-dependent mannose-6-phosphate receptor, macrophage scavenger receptor, and P2X7 receptor, that have not been identified from vesicles before. Proteomic data together with detailed pathway and network analysis showed that integrins and their cytoplasmic cargo proteins are highly abundant in extracellular vesicles released upon β-glucan stimulation. In conclusion, the present data provides a solid basis for further studies on the functional role of vesicular protein secretion upon fungal infection.
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Affiliation(s)
- Wojciech Cypryk
- Institute of Biotechnology, University of Helsinki , 00100 Helsinki, Finland
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Aho V, Ollila HM, Rantanen V, Kronholm E, Surakka I, van Leeuwen WMA, Lehto M, Matikainen S, Ripatti S, Härmä M, Sallinen M, Salomaa V, Jauhiainen M, Alenius H, Paunio T, Porkka-Heiskanen T. Partial sleep restriction activates immune response-related gene expression pathways: experimental and epidemiological studies in humans. PLoS One 2013; 8:e77184. [PMID: 24194869 PMCID: PMC3806729 DOI: 10.1371/journal.pone.0077184] [Citation(s) in RCA: 61] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2013] [Accepted: 08/30/2013] [Indexed: 12/22/2022] Open
Abstract
Epidemiological studies have shown that short or insufficient sleep is associated with increased risk for metabolic diseases and mortality. To elucidate mechanisms behind this connection, we aimed to identify genes and pathways affected by experimentally induced, partial sleep restriction and to verify their connection to insufficient sleep at population level. The experimental design simulated sleep restriction during a working week: sleep of healthy men (N = 9) was restricted to 4 h/night for five nights. The control subjects (N = 4) spent 8 h/night in bed. Leukocyte RNA expression was analyzed at baseline, after sleep restriction, and after recovery using whole genome microarrays complemented with pathway and transcription factor analysis. Expression levels of the ten most up-regulated and ten most down-regulated transcripts were correlated with subjective assessment of insufficient sleep in a population cohort (N = 472). Experimental sleep restriction altered the expression of 117 genes. Eight of the 25 most up-regulated transcripts were related to immune function. Accordingly, fifteen of the 25 most up-regulated Gene Ontology pathways were also related to immune function, including those for B cell activation, interleukin 8 production, and NF-κB signaling (P<0.005). Of the ten most up-regulated genes, expression of STX16 correlated negatively with self-reported insufficient sleep in a population sample, while three other genes showed tendency for positive correlation. Of the ten most down-regulated genes, TBX21 and LGR6 correlated negatively and TGFBR3 positively with insufficient sleep. Partial sleep restriction affects the regulation of signaling pathways related to the immune system. Some of these changes appear to be long-lasting and may at least partly explain how prolonged sleep restriction can contribute to inflammation-associated pathological states, such as cardiometabolic diseases.
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Affiliation(s)
- Vilma Aho
- Department of Physiology, Institute of Biomedicine, University of Helsinki, Helsinki, Finland
| | - Hanna M. Ollila
- Department of Physiology, Institute of Biomedicine, University of Helsinki, Helsinki, Finland
- Department of Molecular Medicine, National Institute for Health and Welfare, Helsinki, Finland
- FIMM, Finnish Institute of Molecular Medicine, Helsinki, Finland
- Department of Psychiatry, HUCH, Helsinki, Finland
| | - Ville Rantanen
- Research Programs Unit, Genome-Scale Biology & Institute of Biomedicine, University of Helsinki, Helsinki, Finland
| | - Erkki Kronholm
- Department of Chronic Disease Prevention, National Institute for Health and Welfare, Helsinki, Finland
| | - Ida Surakka
- Department of Molecular Medicine, National Institute for Health and Welfare, Helsinki, Finland
- FIMM, Finnish Institute of Molecular Medicine, Helsinki, Finland
| | - Wessel M. A. van Leeuwen
- Department of Physiology, Institute of Biomedicine, University of Helsinki, Helsinki, Finland
- Centre of Expertise for Human Factors at Work, Finnish Institute of Occupational Health, Helsinki, Finland
- Stress Research Institute, Stockholm University, Stockholm, Sweden
| | - Maili Lehto
- Unit of Systems Toxicology, Centre of Expertise for Health and Work Ability, Finnish Institute of Occupational Health, Helsinki, Finland
| | - Sampsa Matikainen
- Unit of Systems Toxicology, Centre of Expertise for Health and Work Ability, Finnish Institute of Occupational Health, Helsinki, Finland
| | - Samuli Ripatti
- Department of Molecular Medicine, National Institute for Health and Welfare, Helsinki, Finland
- FIMM, Finnish Institute of Molecular Medicine, Helsinki, Finland
- Department of Medical Epidemiology & Biostatistics, Karolinska Institute, Stockholm, Sweden
- Department of Human Genetics, Wellcome Trust Sanger Institute, Wellcome Trust Genome Campus, Hinxton, United Kingdom
| | - Mikko Härmä
- Centre of Expertise for Human Factors at Work, Finnish Institute of Occupational Health, Helsinki, Finland
| | - Mikael Sallinen
- Centre of Expertise for Human Factors at Work, Finnish Institute of Occupational Health, Helsinki, Finland
- Agora Center, University of Jyväskylä, Jyväskylä, Finland
| | - Veikko Salomaa
- Department of Chronic Disease Prevention, National Institute for Health and Welfare, Helsinki, Finland
| | - Matti Jauhiainen
- Department of Molecular Medicine, National Institute for Health and Welfare, Helsinki, Finland
- FIMM, Finnish Institute of Molecular Medicine, Helsinki, Finland
| | - Harri Alenius
- Unit of Systems Toxicology, Centre of Expertise for Health and Work Ability, Finnish Institute of Occupational Health, Helsinki, Finland
| | - Tiina Paunio
- Department of Molecular Medicine, National Institute for Health and Welfare, Helsinki, Finland
- FIMM, Finnish Institute of Molecular Medicine, Helsinki, Finland
- Department of Psychiatry, HUCH, Helsinki, Finland
| | - Tarja Porkka-Heiskanen
- Department of Physiology, Institute of Biomedicine, University of Helsinki, Helsinki, Finland
- * E-mail:
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Poltajainen A, Matikainen S, Nyman T, Alenius H, Veckman V. 199. Cytokine 2013. [DOI: 10.1016/j.cyto.2013.06.202] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Lappalainen J, Rintahaka J, Kovanen PT, Matikainen S, Eklund KK. Intracellular RNA recognition pathway activates strong anti-viral response in human mast cells. Clin Exp Immunol 2013; 172:121-8. [PMID: 23480192 DOI: 10.1111/cei.12042] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/19/2012] [Indexed: 01/12/2023] Open
Abstract
Mast cells have been implicated in the first line of defence against parasites and bacteria, but less is known about their role in anti-viral responses. Allergic diseases often exacerbate during viral infection, suggesting an increased activation of mast cells in the process. In this study we investigated human mast cell response to double-stranded RNA and viral infection. Cultured human mast cells were incubated with poly(I:C), a synthetic RNA analogue and live Sendai virus as a model of RNA parainfluenza virus infection, and analysed for their anti-viral response. Mast cells responded to intracellular poly(I:C) by inducing type 1 and type 3 interferons and TNF-α. In contrast, extracellular Toll-like receptor 3 (TLR)-3-activating poly(I:C) failed to induce such response. Infection of mast cells with live Sendai virus induced an anti-viral response similar to that of intracellular poly(I:C). Type 1, but not type 3 interferons, up-regulated the expression of melanoma differentiation-associated gene 5 (MDA-5) and retinoic acid-inducible gene-1 (RIG-1), and TLR-3, demonstrating that human mast cells do not express functional receptors for type 3 interferons. Furthermore, virus infection induced the anti-viral proteins MxA and IFIT3 in human mast cells. In conclusion, our results support the notion that mast cells can recognize an invading virus through intracellular virus sensors and produce high amounts of type 1 and type 3 interferons and the anti-viral proteins human myxovirus resistance gene A (MxA) and interferon-induced protein with tetratricopeptide repeats 3 (IFIT3) in response to the virus infection.
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Välimäki E, Aittomäki S, Karenko L, Kantonen J, Pettersson T, Turunen U, Matikainen S, Leirisalo-Repo M, Repo H. Normal inflammasome activation and low production of IL-23 by monocyte-derived macrophages from subjects with a history of reactive arthritis. Scand J Rheumatol 2013; 42:294-8. [PMID: 23425136 DOI: 10.3109/03009742.2012.754940] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
OBJECTIVES The pathogenesis of reactive arthritis (ReA) is incompletely understood but may involve aberration(s) in the host's innate immune response towards infecting microbes. We therefore studied the production of interleukin (IL)-1β, a marker of inflammasome activation, and of IL-6, IL-12, IL-23, and tumour necrosis factor (TNF)-α, promoters of T-cell differentiation, by peripheral blood mononuclear cells (PBMNs) and monocyte-derived macrophages from healthy subjects with a history of ReA. METHOD The study included 10 human leucocyte antigen (HLA)-B27-positive healthy subjects with previous ReA triggered by Yersinia enterocolitica O:3 infection and 20 healthy reference subjects, of whom 10 were HLA-B27 positive. PBMNs and macrophages were cultured for 18 h with bacterial lipopolysaccharide (LPS), muramyl dipeptide (MDP), Yersinia, or their appropriate combinations. PBMNs were also stimulated with monosodium urate (MSU) crystals. Cytokine levels were measured using an enzyme-linked immunosorbent assay (ELISA) and the Luminex system. RESULTS IL-1β secretion was similar from cells of the ReA group and from the HLA-B27-positive and -negative reference groups. TNF-α production from macrophages upon co-stimulation of LPS and MDP increased in the order ReA group < HLA-B27-positive reference group < HLA-B27-negative reference group (p for a trend = 0.027). Similarly, Yersinia-induced TNF-α and IL-23 production increased in the same order (p for trend for TNF-α = 0.036; p for trend for IL-23 = 0.026). CONCLUSIONS PBMNs and macrophages from healthy subjects with previous ReA show normal inflammasome activation and low TNF-α and IL-23 production. This low cytokine production may impair bacterial elimination and thereby contribute to the triggering of ReA.
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Affiliation(s)
- E Välimäki
- Unit of Immunotoxicology, Finnish Institute of Occupational Health, Helsinki, Finland.
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Välimäki E, Miettinen JJ, Lietzén N, Matikainen S, Nyman TA. Monosodium urate activates Src/Pyk2/PI3 kinase and cathepsin dependent unconventional protein secretion from human primary macrophages. Mol Cell Proteomics 2013; 12:749-63. [PMID: 23292187 DOI: 10.1074/mcp.m112.024661] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Monosodium urate (MSU) is an endogenous danger signal that is crystallized from uric acid released from injured cells. MSU is known to activate inflammatory response in macrophages but the molecular mechanisms involved have remained uncharacterized. Activated macrophages start to secrete proteins to activate immune response and to recruit other immune cells to the site of infection and/or tissue damage. Secretome characterization after activation of innate immune system is essential to unravel the details of early phases of defense responses. Here, we have analyzed the secretome of human primary macrophages stimulated with MSU using quantitative two-dimensional gel electrophoresis based proteomics as well as high-throughput qualitative GeLC-MS/MS approach combining protein separation by SDS-PAGE and protein identification by liquid chromatography-MS/MS. Both methods showed that MSU stimulation induced robust protein secretion from lipopolysaccharide-primed human macrophages. Bioinformatic analysis of the secretome data showed that MSU stimulation strongly activates unconventional, vesicle mediated protein secretion. The unconventionally secreted proteins included pro-inflammatory cytokines like IL-1β and IL-18, interferon-induced proteins, and danger signal proteins. Also active forms of lysosomal proteases cathepsins were secreted on MSU stimulation, and cathepsin activity was essential for MSU-induced unconventional protein secretion. Additionally, proteins associated to phosphorylation events including Src family tyrosine kinases were increased in the secretome of MSU-stimulated cells. Our functional studies demonstrated that Src, Pyk2, and PI3 kinases act upstream of cathepsins to activate the overall protein secretion from macrophages. In conclusion, we provide the first comprehensive characterization of protein secretion pathways activated by MSU in human macrophages, and reveal a novel role for cathepsins and Src, Pyk2, PI3 kinases in the activation of unconventional protein secretion.
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Affiliation(s)
- Elina Välimäki
- Institute of Biotechnology, University of Helsinki, University of Helsinki, Finland
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Abstract
Tumour necrosis factor (TNF) receptor-associated periodic syndrome (TRAPS) is a dominantly inherited autoinflammatory disease caused by heterozygous mutations in the TNFRSF1A gene encoding for the TNF receptor 1 (TNFR1). TRAPS is a multi-faceted and heterogeneous disease which commonly manifests as recurrent episodes of high fever accompanied by abdominal pain, pleurisy, migratory rash, and myalgia. Disease attacks occur spontaneously or may be elicited by minor triggers. Because of a vigorous and sustained acute-phase response it may be complicated by systemic AA amyloidosis. Therapeutically interleukin-1 blockade seems even more promising than TNF blockade. Studies on the pathogenesis of TRAPS have shown TNFα-dependent cellular signalling to be defective, an enigmatic finding considering the hyperinflammatory phenotype of the disease. Several studies indicate that most mutated receptors never reach the cell surface but are misfolded and trapped in the endoplasmic reticulum, where they may elicit an intracellular inflammatory response, and thus lead to constitutional expression of proinflammatory cytokines. The aim of this review is to describe the current understanding of the pathogenesis of TRAPS by integrating recent clinical and laboratory data.
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Affiliation(s)
- Tom Pettersson
- Department of Medicine, University of Helsinki and Helsinki University Central Hospital, Haartmaninkatu 4, Helsinki, Finland.
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37
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Savinko T, Matikainen S, Saarialho-Kere U, Lehto M, Wang G, Lehtimäki S, Karisola P, Reunala T, Wolff H, Lauerma A, Alenius H. IL-33 and ST2 in atopic dermatitis: expression profiles and modulation by triggering factors. J Invest Dermatol 2012; 132:1392-400. [PMID: 22277940 DOI: 10.1038/jid.2011.446] [Citation(s) in RCA: 268] [Impact Index Per Article: 22.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
In the acute phase of atopic dermatitis (AD), T-helper type 2 (Th2) cytokines characterize the inflammatory response in the skin. IL-33 is a new tissue-derived cytokine, which is mainly expressed by cells of barrier tissues, and is known to activate Th2 lymphocytes, mast cells, and eosinophils. IL-33 signals through a receptor complex consisting of IL-33-specific receptor ST2 and a co-receptor IL-1RAcP. As IL-33 is known to promote Th2-type immunity, we examined expression profiles of IL-33 and its receptor components in human AD skin, in the murine model of AD, and in various cell models. We found increased expression of IL-33 and ST2 in AD skin after allergen or staphylococcal enterotoxin B (SEB) exposure, as well as in the skin of 22-week-old filaggrin-deficient mice. In addition, skin fibroblasts, HaCaT keratinocytes, primary macrophages, and HUVEC endothelial cells efficiently produced IL-33 in response to the combined stimulation of tumor necrosis factor-α and IFN-γ, which was further enhanced by a mimetic of double-stranded RNA. Finally, the increased expression of IL-33 and ST2 caused by irritant, allergen, or SEB challenge was suppressed by topical tacrolimus treatment. These results suggest an important role for IL-33-ST2 interaction in AD and highlight the fact that bacterial and viral infections may increase the production of IL-33.
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Affiliation(s)
- Terhi Savinko
- Unit of Immunotoxicology, Finnish Institute of Occupational Health, Helsinki, Finland
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Berg RK, Melchjorsen J, Rintahaka J, Diget E, Søby S, Horan KA, Gorelick RJ, Matikainen S, Larsen CS, Ostergaard L, Paludan SR, Mogensen TH. Genomic HIV RNA induces innate immune responses through RIG-I-dependent sensing of secondary-structured RNA. PLoS One 2012; 7:e29291. [PMID: 22235281 PMCID: PMC3250430 DOI: 10.1371/journal.pone.0029291] [Citation(s) in RCA: 113] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2011] [Accepted: 11/24/2011] [Indexed: 12/15/2022] Open
Abstract
BACKGROUND Innate immune responses have recently been appreciated to play an important role in the pathogenesis of HIV infection. Whereas inadequate innate immune sensing of HIV during acute infection may contribute to failure to control and eradicate infection, persistent inflammatory responses later during infection contribute in driving chronic immune activation and development of immunodeficiency. However, knowledge on specific HIV PAMPs and cellular PRRs responsible for inducing innate immune responses remains sparse. METHODS/PRINCIPAL FINDINGS Here we demonstrate a major role for RIG-I and the adaptor protein MAVS in induction of innate immune responses to HIV genomic RNA. We found that secondary structured HIV-derived RNAs induced a response similar to genomic RNA. In primary human peripheral blood mononuclear cells and primary human macrophages, HIV RNA induced expression of IFN-stimulated genes, whereas only low levels of type I IFN and tumor necrosis factor α were produced. Furthermore, secondary structured HIV-derived RNA activated pathways to NF-κB, MAP kinases, and IRF3 and co-localized with peroxisomes, suggesting a role for this organelle in RIG-I-mediated innate immune sensing of HIV RNA. CONCLUSIONS/SIGNIFICANCE These results establish RIG-I as an innate immune sensor of cytosolic HIV genomic RNA with secondary structure, thereby expanding current knowledge on HIV molecules capable of stimulating the innate immune system.
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MESH Headings
- Adaptor Proteins, Signal Transducing/metabolism
- Animals
- Cell Line, Tumor
- DEAD Box Protein 58
- DEAD-box RNA Helicases/metabolism
- Genome, Viral/immunology
- HIV-1/genetics
- HIV-1/immunology
- HIV-1/metabolism
- Humans
- Immunity, Innate
- Interferon Regulatory Factors/metabolism
- Leukocytes, Mononuclear/cytology
- Leukocytes, Mononuclear/immunology
- Leukocytes, Mononuclear/metabolism
- Leukocytes, Mononuclear/virology
- Mice
- Mice, Inbred C57BL
- NF-kappa B/metabolism
- Nucleic Acid Conformation
- Oligoribonucleotides/chemistry
- Oligoribonucleotides/metabolism
- Peroxisomes/metabolism
- Peroxisomes/virology
- Protein Transport
- RNA, Viral/chemistry
- RNA, Viral/metabolism
- Receptors, Immunologic
- Signal Transduction/immunology
- Viral Proteins/metabolism
- p38 Mitogen-Activated Protein Kinases/metabolism
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Affiliation(s)
- Randi K. Berg
- Department of Infectious Diseases, Aarhus University Hospital - Skejby, Aarhus, Denmark
| | - Jesper Melchjorsen
- Department of Infectious Diseases, Aarhus University Hospital - Skejby, Aarhus, Denmark
| | - Johanna Rintahaka
- Unit of Excellence for Immunotoxicology, Finnish Institute of Occupational Health, Helsinki, Finland
| | - Elisabeth Diget
- Department of Infectious Diseases, Aarhus University Hospital - Skejby, Aarhus, Denmark
| | - Stine Søby
- Department of Infectious Diseases, Aarhus University Hospital - Skejby, Aarhus, Denmark
| | - Kristy A. Horan
- Department of Biomedicine, University of Aarhus, Aarhus, Denmark
| | - Robert J. Gorelick
- AIDS and Cancer Virus Program, SAIC-Frederick, Inc., National Cancer Institute-Frederick, Frederick, Maryland, United States of America
| | - Sampsa Matikainen
- Unit of Excellence for Immunotoxicology, Finnish Institute of Occupational Health, Helsinki, Finland
| | - Carsten S. Larsen
- Department of Infectious Diseases, Aarhus University Hospital - Skejby, Aarhus, Denmark
| | - Lars Ostergaard
- Department of Infectious Diseases, Aarhus University Hospital - Skejby, Aarhus, Denmark
| | - Søren R. Paludan
- Department of Biomedicine, University of Aarhus, Aarhus, Denmark
| | - Trine H. Mogensen
- Department of Infectious Diseases, Aarhus University Hospital - Skejby, Aarhus, Denmark
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Palomäki J, Välimäki E, Sund J, Vippola M, Clausen PA, Jensen KA, Savolainen K, Matikainen S, Alenius H. Long, needle-like carbon nanotubes and asbestos activate the NLRP3 inflammasome through a similar mechanism. ACS Nano 2011; 5:6861-6870. [PMID: 21800904 DOI: 10.1021/nn200595c] [Citation(s) in RCA: 282] [Impact Index Per Article: 21.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Carbon nanomaterials (CNM) are targets of great interest because they have multiple applications in industry but also because of the fear of possible harmful heath effects of certain types of CNM. The high aspect ratio of carbon nanotubes (CNT), a feature they share with asbestos, is likely the key factor for reported toxicity of certain CNT. However, the mechanism to explain this toxicity is unclear. Here we investigated whether different CNM induce a pro-inflammatory response in human primary macrophages. Carbon black, short CNT, long, tangled CNT, long, needle-like CNT, and crocidolite asbestos were used to compare the effect of size and shape on the potency of the materials to induce secretion of interleukin (IL) 1-family cytokines. Our results demonstrated that long, needle-like CNT and asbestos activated secretion of IL-1β from LPS-primed macrophages but only long, needle-like CNT induced IL-1α secretion. SiRNA experiments demonstrated that the NLRP3 inflammasome was essential for long, needle-like CNT and asbestos-induced IL-1β secretion. Moreover, it was noted that CNT-induced NLRP3 inflammasome activation depended on reactive oxygen species (ROS) production, cathepsin B activity, P2X(7) receptor, and Src and Syk tyrosine kinases. These results provide new information about the mechanisms by which long, needle-like materials may cause their harmful health effects. Furthermore, the techniques used here may be of use in future risk assessments of nanomaterials.
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Affiliation(s)
- Jaana Palomäki
- Unit of Immunotoxicology, Finnish Institute of Occupational Health, 00250, Helsinki, Finland.
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Lietzén N, Öhman T, Rintahaka J, Julkunen I, Aittokallio T, Matikainen S, Nyman TA. Quantitative subcellular proteome and secretome profiling of influenza A virus-infected human primary macrophages. PLoS Pathog 2011; 7:e1001340. [PMID: 21589892 PMCID: PMC3093355 DOI: 10.1371/journal.ppat.1001340] [Citation(s) in RCA: 117] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2010] [Accepted: 04/11/2011] [Indexed: 12/24/2022] Open
Abstract
Influenza A viruses are important pathogens that cause acute respiratory diseases and annual epidemics in humans. Macrophages recognize influenza A virus infection with their pattern recognition receptors, and are involved in the activation of proper innate immune response. Here, we have used high-throughput subcellular proteomics combined with bioinformatics to provide a global view of host cellular events that are activated in response to influenza A virus infection in human primary macrophages. We show that viral infection regulates the expression and/or subcellular localization of more than one thousand host proteins at early phases of infection. Our data reveals that there are dramatic changes in mitochondrial and nuclear proteomes in response to infection. We show that a rapid cytoplasmic leakage of lysosomal proteins, including cathepsins, followed by their secretion, contributes to inflammasome activation and apoptosis seen in the infected macrophages. Also, our results demonstrate that P2X7 receptor and src tyrosine kinase activity are essential for inflammasome activation during influenza A virus infection. Finally, we show that influenza A virus infection is associated with robust secretion of different danger-associated molecular patterns (DAMPs) suggesting an important role for DAMPs in host response to influenza A virus infection. In conclusion, our high-throughput quantitative proteomics study provides important new insight into host-response against influenza A virus infection in human primary macrophages. Influenza A viruses are negative-stranded RNA viruses that are capable of infecting a variety of avian and mammalian species. These viruses are responsible for the annual epidemics that cause severe illnesses in millions of people worldwide. The initial innate immune responses to influenza A viruses have to restrict virus spread before the adaptive immune responses fully develop. Macrophages are the key players of innate immune system and they have a central role in the activation of host response during viral infections. However, the host factors that are involved in the activation of innate immune response during influenza A virus infection are incompletely understood. Here, we have characterized in detail the nuclear, mitochondrial and cytoplasmic proteomes, as well as the secretome from influenza A virus-infected human primary macrophages to get a global view of host factors that are affected by the infection. Our approach allowed us to identify several novel host factors that contribute to innate immune system during influenza A virus infections. These include lysomal proteases cathepsins, P2X7 receptor, src family tyrosine kinases as well as several danger-associated molecular patterns.
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Affiliation(s)
- Niina Lietzén
- Institute of Biotechnology, University of Helsinki, Helsinki, Finland
| | - Tiina Öhman
- Institute of Biotechnology, University of Helsinki, Helsinki, Finland
| | | | - Ilkka Julkunen
- National Institute for Health and Welfare, Helsinki, Finland
| | | | | | - Tuula A. Nyman
- Institute of Biotechnology, University of Helsinki, Helsinki, Finland
- * E-mail:
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41
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Rechardt M, Shiri R, Matikainen S, Viikari-Juntura E, Karppinen J, Alenius H. Soluble IL-1RII and IL-18 are associated with incipient upper extremity soft tissue disorders. Cytokine 2011; 54:149-53. [DOI: 10.1016/j.cyto.2011.02.003] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2010] [Revised: 12/08/2010] [Accepted: 02/01/2011] [Indexed: 11/15/2022]
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Niemi K, Teirilä L, Lappalainen J, Rajamäki K, Baumann MH, Öörni K, Wolff H, Kovanen PT, Matikainen S, Eklund KK. Serum amyloid A activates the NLRP3 inflammasome via P2X7 receptor and a cathepsin B-sensitive pathway. J Immunol 2011; 186:6119-28. [PMID: 21508263 DOI: 10.4049/jimmunol.1002843] [Citation(s) in RCA: 213] [Impact Index Per Article: 16.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Serum amyloid A (SAA) is an acute-phase protein, the serum levels of which can increase up to 1000-fold during inflammation. SAA has a pathogenic role in amyloid A-type amyloidosis, and increased serum levels of SAA correlate with the risk for cardiovascular diseases. IL-1β is a key proinflammatory cytokine, and its secretion is strictly controlled by the inflammasomes. We studied the role of SAA in the regulation of IL-1β production and activation of the inflammasome cascade in human and mouse macrophages, as well as in THP-1 cells. SAA could provide a signal for the induction of pro-IL-1β expression and for inflammasome activation, resulting in secretion of mature IL-1β. Blocking TLR2 and TLR4 attenuated SAA-induced expression of IL1B, whereas inhibition of caspase-1 and the ATP receptor P2X(7) abrogated the release of mature IL-1β. NLRP3 inflammasome consists of the NLRP3 receptor and the adaptor protein apoptosis-associated speck-like protein containing CARD (a caspase-recruitment domain) (ASC). SAA-mediated IL-1β secretion was markedly reduced in ASC(-/-) macrophages, and silencing NLRP3 decreased IL-1β secretion, confirming NLRP3 as the SAA-responsive inflammasome. Inflammasome activation was dependent on cathepsin B activity, but it was not associated with lysosomal destabilization. SAA also induced secretion of cathepsin B and ASC. In conclusion, SAA can induce the expression of pro-IL-1β and activation of the NLRP3 inflammasome via P2X(7) receptor and a cathepsin B-sensitive pathway. Thus, during systemic inflammation, SAA may promote the production of IL-1β in tissues. Furthermore, the SAA-induced secretion of active cathepsin B may lead to extracellular processing of SAA and, thus, potentially to the development of amyloid A amyloidosis.
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Affiliation(s)
- Katri Niemi
- Wihuri Research Institute, 00140 Helsinki, Finland.
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Rintahaka J, Lietzén N, Öhman T, Nyman TA, Matikainen S. Recognition of cytoplasmic RNA results in cathepsin-dependent inflammasome activation and apoptosis in human macrophages. J Immunol 2011; 186:3085-92. [PMID: 21257972 DOI: 10.4049/jimmunol.1002051] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
dsRNA is an important pathogen-associated molecular pattern that is primarily recognized by cytosolic pattern-recognition receptors of the innate-immune system during virus infection. This recognition results in the activation of inflammasome-associated caspase-1 and apoptosis of infected cells. In this study, we used high-throughput proteomics to identify secretome, the global pattern of secreted proteins, in human primary macrophages that had been activated through the cytoplasmic dsRNA-recognition pathway. The secretome analysis revealed cytoplasmic dsRNA-recognition pathway-induced secretion of several exosome-associated proteins, as well as basal and dsRNA-activated secretion of lysosomal protease cathepsins and cysteine protease inhibitors (cystatins). Inflammasome activation was almost completely abolished by cathepsin inhibitors in response to dsRNA stimulation, as well as encephalomyocarditis virus and vesicular stomatitis virus infections. Interestingly, Western blot analysis showed that the mature form of cathepsin D, but not cathepsin B, was secreted simultaneously with IL-18 and inflammasome components ASC and caspase-1 in cytoplasmic dsRNA-stimulated cells. Furthermore, small interfering RNA-mediated silencing experiments confirmed that cathepsin D has a role in inflammasome activation. Caspase-1 activation was followed by proteolytic processing of caspase-3, indicating that inflammasome activation precedes apoptosis in macrophages that had recognized cytoplasmic RNA. Like inflammasome activation, apoptosis triggered by dsRNA stimulation and virus infection was effectively blocked by cathepsin inhibition. In conclusion, our results emphasize the importance of cathepsins in the innate immune response to virus infection.
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Affiliation(s)
- Johanna Rintahaka
- Unit of Excellence for Immunotoxicology, Finnish Institute of Occupational Health, 00250 Helsinki, Finland
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Melchjorsen J, Rintahaka J, Søby S, Horan KA, Poltajainen A, Østergaard L, Paludan SR, Matikainen S. Early innate recognition of herpes simplex virus in human primary macrophages is mediated via the MDA5/MAVS-dependent and MDA5/MAVS/RNA polymerase III-independent pathways. J Virol 2010; 84:11350-8. [PMID: 20739519 PMCID: PMC2953193 DOI: 10.1128/jvi.01106-10] [Citation(s) in RCA: 102] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2010] [Accepted: 08/09/2010] [Indexed: 12/25/2022] Open
Abstract
Innate recognition of viruses is mediated by pattern recognition receptors (PRRs) triggering expression of antiviral interferons (IFNs) and proinflammatory cytokines. In mice, Toll-like receptor 2 (TLR2) and TLR9 as well as intracellular nucleotide-sensing pathways have been shown to recognize herpes simplex virus (HSV). Here, we describe how human primary macrophages recognize early HSV infection via intracellular pathways. A number of inflammatory cytokines, IFNs, and IFN-stimulated genes were upregulated after HSV infection. We show that early recognition of HSV and induction of IFNs and inflammatory cytokines are independent of TLR2 and TLR9, since inhibition of TLR2 using TLR2 neutralizing antibodies did not affect virus-induced responses and the macrophages were unresponsive to TLR9 stimulation. Instead, HSV recognition involves intracellular recognition systems, since induction of tumor necrosis factor alpha (TNF-α) and IFNs was dependent on virus entry and replication. Importantly, expression of IFNs was strongly inhibited by small interfering RNA (siRNA) knockdown of MAVS, but this MAVS-dependent IFN induction occurred independently of the recently discovered polymerase III (Pol III)/RIG-I DNA sensing system. In contrast, induction of TNF-α was largely independent of MAVS, suggesting that induction of inflammatory cytokines during HSV infection proceeds via a novel pathway. Transfection with ODN2006, a broad inhibitor of intracellular nucleotide recognition, revealed that nucleotide-sensing systems are employed to induce both IFNs and TNF-α. Finally, using siRNA knockdown, we found that MDA5, but not RIG-I, was the primary mediator of HSV recognition. Thus, innate recognition of HSV by human primary macrophages occurs via two distinct intracellular nucleotide-sensing pathways responsible for induction of IFNs and inflammatory cytokine expression, respectively.
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Affiliation(s)
- Jesper Melchjorsen
- Department of Infectious Diseases, Aarhus University Hospital Skejby, and Department of Medical Microbiology and Immunology, University of Aarhus, Brendstrupgaardsvej 100, DK-8200 Aarhus N, Denmark.
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45
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Rajamäki K, Lappalainen J, Öörni K, Välimäki E, Matikainen S, Kovanen P, Eklund K. Cholesterol crystals activate the NLRP3 inflammasome in human monocytes and macrophages. Chem Phys Lipids 2010. [DOI: 10.1016/j.chemphyslip.2010.05.084] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Rajamäki K, Lappalainen J, Oörni K, Välimäki E, Matikainen S, Kovanen PT, Eklund KK. Cholesterol crystals activate the NLRP3 inflammasome in human macrophages: a novel link between cholesterol metabolism and inflammation. PLoS One 2010; 5:e11765. [PMID: 20668705 PMCID: PMC2909263 DOI: 10.1371/journal.pone.0011765] [Citation(s) in RCA: 712] [Impact Index Per Article: 50.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2010] [Accepted: 06/24/2010] [Indexed: 12/21/2022] Open
Abstract
Background Chronic inflammation of the arterial wall is a key element in the pathogenesis of atherosclerosis, yet the factors that trigger and sustain the inflammation remain elusive. Inflammasomes are cytoplasmic caspase-1-activating protein complexes that promote maturation and secretion of the proinflammatory cytokines interleukin(IL)-1β and IL-18. The most intensively studied inflammasome, NLRP3 inflammasome, is activated by diverse substances, including crystalline and particulate materials. As cholesterol crystals are abundant in atherosclerotic lesions, and IL-1β has been linked to atherogenesis, we explored the possibility that cholesterol crystals promote inflammation by activating the inflammasome pathway. Principal Findings Here we show that human macrophages avidly phagocytose cholesterol crystals and store the ingested cholesterol as cholesteryl esters. Importantly, cholesterol crystals induced dose-dependent secretion of mature IL-1β from human monocytes and macrophages. The cholesterol crystal-induced secretion of IL-1β was caspase-1-dependent, suggesting the involvement of an inflammasome-mediated pathway. Silencing of the NLRP3 receptor, the crucial component in NLRP3 inflammasome, completely abolished crystal-induced IL-1β secretion, thus identifying NLRP3 inflammasome as the cholesterol crystal-responsive element in macrophages. The crystals were shown to induce leakage of the lysosomal protease cathepsin B into the cytoplasm and inhibition of this enzyme reduced cholesterol crystal-induced IL-1β secretion, suggesting that NLRP3 inflammasome activation occurred via lysosomal destabilization. Conclusions The cholesterol crystal-induced inflammasome activation in macrophages may represent an important link between cholesterol metabolism and inflammation in atherosclerotic lesions.
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Kankkunen P, Teirilä L, Rintahaka J, Alenius H, Wolff H, Matikainen S. (1,3)-beta-glucans activate both dectin-1 and NLRP3 inflammasome in human macrophages. J Immunol 2010; 184:6335-42. [PMID: 20421639 DOI: 10.4049/jimmunol.0903019] [Citation(s) in RCA: 202] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
beta-Glucans are naturally occurring polysaccharides that are the major cell wall components of fungi. Recognition of beta-glucans is mediated through a membrane-bound pattern recognition receptor called dectin-1, and gene knock-out studies have shown that dectin-1 plays an important role in antifungal immune response in vivo. In this report, we have studied the effect of large particulate (1,3)-beta-glucans, including curdlan, glucan from baker's yeast, paramylon, and zymosan, on inflammatory response in human macrophages. We show that beta-glucans activate the transcription of the proinflammatory cytokine IL-1beta through a dectin-1-dependent pathway in human macrophages. Moreover, dectin-1 receptor associated Syk tyrosine kinase was essential for beta-glucan induced IL-1beta mRNA expression. In contrast to LPS, beta-glucans also strongly activated the secretion of IL-1beta. This beta-glucan triggered IL-1beta release was abolished by cytochalasin D, an inhibitor of phagocytosis, demonstrating that cytosolic recognition of beta-glucans is required for IL-1beta response in human macrophages. RNA interference-mediated gene knockdown experiments demonstrated that cytoplasmic NLRP3 inflammasome is essential for beta-glucan-induced IL-1beta secretion. Moreover, our results suggest that beta-glucan-induced NLRP3 inflammasome activation is dependent on the dectin-1/Syk signaling pathway. Furthermore, our results suggest that the lysosomal cathepsin B protease, the formation of reactive oxygen species, and the efflux of potassium are needed for beta-glucan-induced NLRP3 inflammasome activation. In conclusion, our results show that beta-glucans are recognized by membrane-associated dectin-1 and cytoplasmic NLRP3 inflammasome resulting in IL-1beta gene transcription and IL-1beta secretion in human macrophages, respectively.
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Affiliation(s)
- Päivi Kankkunen
- Unit of Excellence for Immunotoxicology, Finnish Institute of Occupational Health, Helsinki, Finland
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Öhman T, Lietzén N, Välimäki E, Melchjorsen J, Matikainen S, Nyman TA. Cytosolic RNA Recognition Pathway Activates 14-3-3 Protein Mediated Signaling and Caspase-Dependent Disruption of Cytokeratin Network in Human Keratinocytes. J Proteome Res 2010; 9:1549-64. [DOI: 10.1021/pr901040u] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Tiina Öhman
- Protein Chemistry Research Group, Institute of Biotechnology, University of Helsinki, Finland, Unit of Excellence in Immunotoxicology, Finnish Institute of Occupational Health, Finland, and Department of Infectious Diseases, Aarhus University Hospital, Skejby, Denmark
| | - Niina Lietzén
- Protein Chemistry Research Group, Institute of Biotechnology, University of Helsinki, Finland, Unit of Excellence in Immunotoxicology, Finnish Institute of Occupational Health, Finland, and Department of Infectious Diseases, Aarhus University Hospital, Skejby, Denmark
| | - Elina Välimäki
- Protein Chemistry Research Group, Institute of Biotechnology, University of Helsinki, Finland, Unit of Excellence in Immunotoxicology, Finnish Institute of Occupational Health, Finland, and Department of Infectious Diseases, Aarhus University Hospital, Skejby, Denmark
| | - Jesper Melchjorsen
- Protein Chemistry Research Group, Institute of Biotechnology, University of Helsinki, Finland, Unit of Excellence in Immunotoxicology, Finnish Institute of Occupational Health, Finland, and Department of Infectious Diseases, Aarhus University Hospital, Skejby, Denmark
| | - Sampsa Matikainen
- Protein Chemistry Research Group, Institute of Biotechnology, University of Helsinki, Finland, Unit of Excellence in Immunotoxicology, Finnish Institute of Occupational Health, Finland, and Department of Infectious Diseases, Aarhus University Hospital, Skejby, Denmark
| | - Tuula A. Nyman
- Protein Chemistry Research Group, Institute of Biotechnology, University of Helsinki, Finland, Unit of Excellence in Immunotoxicology, Finnish Institute of Occupational Health, Finland, and Department of Infectious Diseases, Aarhus University Hospital, Skejby, Denmark
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Pulkkinen V, Bruce S, Rintahaka J, Hodgson U, Laitinen T, Alenius H, Kinnula VL, Myllärniemi M, Matikainen S, Kere J. ELMOD2, a candidate gene for idiopathic pulmonary fibrosis, regulates antiviral responses. FASEB J 2009; 24:1167-77. [PMID: 19966137 DOI: 10.1096/fj.09-138545] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Viral infections and abnormal host response are thought to cause epithelial injury in idiopathic pulmonary fibrosis (IPF). To understand IPF pathogenesis, we have used overexpression cell models and expression microarrays to discover genes networked with ELMO domain containing 2 (ELMOD2) gene genetically implicated in IPF. The identified pathways were confirmed in vitro, and ELMOD2 protein expression was characterized in tissue samples. Here 303 genes were significantly altered after ELMOD2 transfection of human alveolar epithelial A549 cell line. The enriched pathways were interferon induction, viral response, antigen processing and presentation, and I-/nuclear factor-kappaB signaling. ELMOD2 showed immunoreactivity in macrophages and type II alveolar epithelial cells in normal human lung. In A549 cells, forced expression of ELMOD2 increased type I and type III interferon mRNA expression, and ELMOD2-specific siRNA molecules inhibited expression of these antiviral cytokines in response to Toll-like receptor three (TLR3) activation. In human macrophages silencing of ELMOD2 inhibited TLR3-dependent expression of type I and type III interferon genes. Influenza A virus infection decreased ELMOD2 mRNA expression in A549 cells and macrophages suggesting negative regulation in viral infections. In summary, our results show that TLR3 pathway is dependent on ELMOD2.-Pulkkinen, V., Bruce, S., Rintahaka, J., Hodgson, U., Laitinen, T., Alenius, H., Kinnula, V. L., Myllärniemi, M., Matikainen, S., Kere, J. ELMOD2, a candidate gene for idiopathic pulmonary fibrosis, regulates antiviral responses.
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Affiliation(s)
- Ville Pulkkinen
- Department of Medical Genetics, Biomedicum Helsinki, P.O. Box 63, 00014 University of Helsinki, Finland.
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Rossi EM, Pylkkänen L, Koivisto AJ, Vippola M, Jensen KA, Miettinen M, Sirola K, Nykäsenoja H, Karisola P, Stjernvall T, Vanhala E, Kiilunen M, Pasanen P, Mäkinen M, Hämeri K, Joutsensaari J, Tuomi T, Jokiniemi J, Wolff H, Savolainen K, Matikainen S, Alenius H. Airway exposure to silica-coated TiO2 nanoparticles induces pulmonary neutrophilia in mice. Toxicol Sci 2009; 113:422-33. [PMID: 19875681 DOI: 10.1093/toxsci/kfp254] [Citation(s) in RCA: 128] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
The importance of nanotechnologies and engineered nanoparticles has grown rapidly. It is therefore crucial to acquire up-to-date knowledge of the possible harmful health effects of these materials. Since a multitude of different types of nanosized titanium dioxide (TiO(2)) particles are used in industry, we explored their inflammatory potential using mouse and cell models. BALB/c mice were exposed by inhalation for 2 h, 2 h on 4 consecutive days, or 2 h on 4 consecutive days for 4 weeks to several commercial TiO(2) nanoparticles, SiO(2) nanoparticles, and to nanosized TiO(2) generated in a gas-to-particle conversion process at 10 mg/m(3). In addition, effects of in vitro exposure of human macrophages and fibroblasts (MRC-9) to the different particles were assessed. SiO(2)-coated rutile TiO(2) nanoparticles (cnTiO(2)) was the only sample tested that elicited clear-cut pulmonary neutrophilia. Uncoated rutile and anatase as well as nanosized SiO(2) did not induce significant inflammation. Pulmonary neutrophilia was accompanied by increased expression of tumor necrosis factor-alpha (TNF-alpha) and neutrophil-attracting chemokine CXCL1 in the lung tissue. TiO(2) particles accumulated almost exclusively in the alveolar macrophages. In vitro exposure of murine and human macrophages to cnTiO(2) elicited significant induction of TNF-alpha and neutrophil-attracting chemokines. Stimulation of human fibroblasts with cnTiO(2)-activated macrophage supernatant induced high expression of neutrophil-attracting chemokines, CXCL1 and CXCL8. Interestingly, the level of lung inflammation could not be explained by the surface area of the particles, their primary or agglomerate particle size, or radical formation capacity but is rather explained by the surface coating. Our findings emphasize that it is vitally important to take into account in the risk assessment that alterations of nanoparticles, e.g., by surface coating, may drastically change their toxicological potential.
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Affiliation(s)
- Elina M Rossi
- Unit of Excellence for Immunotoxicology, Finnish Institute of Occupational Health, Helsinki, Finland
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