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Kimura-Ohba S, Kitamura M, Tsukamoto Y, Kogaki S, Sakai S, Fushimi H, Matsuoka K, Takeuchi M, Itoh K, Ueda K, Kimura T. Viral entry and translation in brain endothelia provoke influenza-associated encephalopathy. Acta Neuropathol 2024; 147:77. [PMID: 38687393 PMCID: PMC11061015 DOI: 10.1007/s00401-024-02723-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2023] [Revised: 03/01/2024] [Accepted: 03/21/2024] [Indexed: 05/02/2024]
Abstract
Influenza-associated encephalopathy (IAE) is extremely acute in onset, with high lethality and morbidity within a few days, while the direct pathogenesis by influenza virus in this acute phase in the brain is largely unknown. Here we show that influenza virus enters into the cerebral endothelium and thereby induces IAE. Three-weeks-old young mice were inoculated with influenza A virus (IAV). Physical and neurological scores were recorded and temporal-spatial analyses of histopathology and viral studies were performed up to 72 h post inoculation. Histopathological examinations were also performed using IAE human autopsy brains. Viral infection, proliferation and pathogenesis were analyzed in cell lines of endothelium and astrocyte. The effects of anti-influenza viral drugs were tested in the cell lines and animal models. Upon intravenous inoculation of IAV in mice, the mice developed encephalopathy with brain edema and pathological lesions represented by micro bleeding and injured astrocytic process (clasmatodendrosis) within 72 h. Histologically, massive deposits of viral nucleoprotein were observed as early as 24 h post infection in the brain endothelial cells of mouse models and the IAE patients. IAV inoculated endothelial cell lines showed deposition of viral proteins and provoked cell death, while IAV scarcely amplified. Inhibition of viral transcription and translation suppressed the endothelial cell death and the lethality of mouse models. These data suggest that the onset of encephalopathy should be induced by cerebral endothelial infection with IAV. Thus, IAV entry into the endothelium, and transcription and/or translation of viral RNA, but not viral proliferation, should be the key pathogenesis of IAE.
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Affiliation(s)
- Shihoko Kimura-Ohba
- Division of Virology, Department of Microbiology and Immunology, Osaka University Graduate School of Medicine, 2-2 Yamada-Oka, Suita, Osaka, 565-0871, Japan.
- Reverse Translational Research Project, Health and Nutrition (NIBIOHN), National Institutes of Biomedical Innovation, Osaka, Japan.
- KAGAMI Project, Health and Nutrition (NIBIOHN), National Institutes of Biomedical Innovation, Osaka, Japan.
- Department of Pediatrics and Neonatology, Osaka General Medical Center, Osaka, Japan.
| | - Mieko Kitamura
- KAGAMI Project, Health and Nutrition (NIBIOHN), National Institutes of Biomedical Innovation, Osaka, Japan
| | - Yusuke Tsukamoto
- Reverse Translational Research Project, Health and Nutrition (NIBIOHN), National Institutes of Biomedical Innovation, Osaka, Japan
- KAGAMI Project, Health and Nutrition (NIBIOHN), National Institutes of Biomedical Innovation, Osaka, Japan
| | - Shigetoyo Kogaki
- Department of Pediatrics and Neonatology, Osaka General Medical Center, Osaka, Japan
| | - Shinsuke Sakai
- Reverse Translational Research Project, Health and Nutrition (NIBIOHN), National Institutes of Biomedical Innovation, Osaka, Japan
- KAGAMI Project, Health and Nutrition (NIBIOHN), National Institutes of Biomedical Innovation, Osaka, Japan
- Department of Nephrology, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Hiroaki Fushimi
- Department of Pathology, Osaka General Medical Center, Osaka, Japan
| | - Keiko Matsuoka
- Department of Pathology, Osaka General Medical Center, Osaka, Japan
- Department of Pathology, Osaka Women's and Children's Hospital, Osaka, Japan
| | - Makoto Takeuchi
- Department of Pathology, Osaka Women's and Children's Hospital, Osaka, Japan
| | - Kyoko Itoh
- Department of Pathology and Applied Neurobiology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Keiji Ueda
- Division of Virology, Department of Microbiology and Immunology, Osaka University Graduate School of Medicine, 2-2 Yamada-Oka, Suita, Osaka, 565-0871, Japan
| | - Tomonori Kimura
- Reverse Translational Research Project, Health and Nutrition (NIBIOHN), National Institutes of Biomedical Innovation, Osaka, Japan
- KAGAMI Project, Health and Nutrition (NIBIOHN), National Institutes of Biomedical Innovation, Osaka, Japan
- Department of Nephrology, Osaka University Graduate School of Medicine, Osaka, Japan
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2
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Roe K. Deadly interactions: Synergistic manipulations of concurrent pathogen infections potentially enabling future pandemics. Drug Discov Today 2023; 28:103762. [PMID: 37660981 DOI: 10.1016/j.drudis.2023.103762] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2023] [Revised: 08/18/2023] [Accepted: 08/29/2023] [Indexed: 09/05/2023]
Abstract
Certain mono-infections of influenza viruses and novel coronaviruses, including severe acute respiratory syndrome-coronavirus 2 (SARS-CoV-2) are significant threats to human health. Concurrent infections by influenza viruses and coronaviruses increases their danger. Influenza viruses have eight manipulations capable of assisting SARS-CoV-2 and other coronaviruses, and several of these manipulations, which are not specific to viruses, can also directly or indirectly boost dangerous secondary bacterial pneumonias. The influenza virus manipulations include: inhibiting transcription factors and cytokine expression; impairing defensive protein expression; increasing RNA viral replication; inhibiting defenses by manipulating cellular sensors and signaling pathways; inhibiting defenses by secreting exosomes; stimulating cholesterol production to increase synthesized virion infectivities; increasing cellular autophagy to assist viral replication; and stimulating glucocorticoid synthesis to suppress innate and adaptive immune defenses by inhibiting cytokine, chemokine, and adhesion molecule production. Teaser: Rapidly spreading multidrug-resistant respiratory bacteria, combined with influenza virus's far-reaching cellular defense manipulations benefiting evolving SARS-CoV-2 or other coronaviruses and/or respiratory bacteria, can enable more severe pandemics or co-pandemics.
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3
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Roe K. Increased Fungal Infection Mortality Induced by Concurrent Viral Cellular Manipulations. Lung 2023; 201:467-476. [PMID: 37670187 DOI: 10.1007/s00408-023-00642-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Accepted: 08/16/2023] [Indexed: 09/07/2023]
Abstract
Certain respiratory fungal pathogen mono-infections can cause high mortality rates. Several viral pathogen mono-infections, including influenza viruses and coronaviruses including SARS-CoV-2, can also cause high mortality rates. Concurrent infections by fungal pathogens and highly manipulative viral pathogens can synergistically interact in the respiratory tract to substantially increase their mortality rates. There are at least five viral manipulations which can assist secondary fungal infections. These viral manipulations include the following: (1) inhibiting transcription factors and cytokine expressions, (2) impairing defensive protein expressions, (3) inhibiting defenses by manipulating cellular sensors and signaling pathways, (4) inhibiting defenses by secreting exosomes, and (5) stimulating glucocorticoid synthesis to suppress immune defenses by inhibiting cytokine, chemokine, and adhesion molecule production. The highest mortality respiratory viral pandemics up to now have had substantially boosted mortalities by inducing secondary bacterial pneumonias. However, numerous animal species besides humans are also carriers of endemic infections by viral and multidrug-resistant fungal pathogens. The vast multi-species scope of endemic infection opportunities make it plausible that the pro-fungal manipulations of a respiratory virus can someday evolve to enable a very high mortality rate viral pandemic inducing multidrug-resistant secondary fungal pathogen infections. Since such pandemics can quickly spread world-wide and outrun existing treatments, it would be worthwhile to develop new antifungal treatments well before such a high mortality event occurs.
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4
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Roe K. Eight influenza virus cellular manipulations which can boost concurrent SARS-CoV-2 infections to severe outcomes. Hum Cell 2023; 36:1581-1592. [PMID: 37306884 DOI: 10.1007/s13577-023-00923-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2023] [Accepted: 05/22/2023] [Indexed: 06/13/2023]
Abstract
Viral pathogens in the lungs can cause severe outcomes, including acute lung injury and acute respiratory distress syndrome. Dangerous respiratory pathogens include some influenza A and B viruses, and the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). Unfortunately, concurrent infections of influenza virus and SARS-CoV-2 increase severe outcome probabilities. Influenza viruses have eight cellular manipulations which can assist concurrent SARS-CoV-2 viral infections. The eight cellular manipulations include: (1) viral protein binding with cellular sensors to block antiviral transcription factors and cytokine expressions, (2) viral protein binding with cell proteins to impair cellular pre-messenger ribonucleic acid splicing, (3) increased ribonucleic acid virus replication through the phosphatidylinositol 3-kinase/Akt (protein kinase B) pathway, (4) regulatory ribonucleic acids to manipulate cellular sensors and pathways to suppress antiviral defenses, (5) exosomes to transmit influenza virus to uninfected cells to weaken cellular defenses before SARS-CoV-2 infection, (6) increased cellular cholesterol and lipids to improve virion synthesis stability, quality and virion infectivity, (7) increased cellular autophagy, benefiting influenza virus and SARS-CoV-2 replications and (8) adrenal gland stimulation to produce glucocorticoids, which suppress immune cells, including reduced synthesis of cytokines, chemokines and adhesion molecules. Concurrent infections by one of the influenza viruses and SARS-CoV-2 will increase the probability of severe outcomes, and with sufficient synergy potentially enable the recurrence of tragic pandemics.
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Clemente A, Alba-Patiño A, Santopolo G, Rojo-Molinero E, Oliver A, Borges M, Aranda M, del Castillo A, de la Rica R. Immunodetection of Lung IgG and IgM Antibodies against SARS-CoV-2 via Enzymatic Liquefaction of Respiratory Samples from COVID-19 Patients. Anal Chem 2021; 93:5259-5266. [DOI: 10.1021/acs.analchem.1c00251] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Antonio Clemente
- Multidisciplinary Sepsis Group, Health Research Institute of the Balearic Islands (IdISBa), Palma de Mallorca 07120, Spain
| | - Alejandra Alba-Patiño
- Multidisciplinary Sepsis Group, Health Research Institute of the Balearic Islands (IdISBa), Palma de Mallorca 07120, Spain
- Chemistry Department, University of the Balearic Islands, Palma de Mallorca 07122, Spain
| | - Giulia Santopolo
- Multidisciplinary Sepsis Group, Health Research Institute of the Balearic Islands (IdISBa), Palma de Mallorca 07120, Spain
- Chemistry Department, University of the Balearic Islands, Palma de Mallorca 07122, Spain
| | - Estrella Rojo-Molinero
- Microbiology Department, Son Espases University Hospital, Health Research Institute of the Balearic Islands (IdISBa), Palma de Mallorca 07120, Spain
| | - Antonio Oliver
- Microbiology Department, Son Espases University Hospital, Health Research Institute of the Balearic Islands (IdISBa), Palma de Mallorca 07120, Spain
| | - Marcio Borges
- Multidisciplinary Sepsis Group, Health Research Institute of the Balearic Islands (IdISBa), Palma de Mallorca 07120, Spain
- Multidisciplinary Sepsis Unit, ICU, Son Llàtzer University Hospital, Palma de Mallorca 07198, Spain
| | - María Aranda
- Multidisciplinary Sepsis Group, Health Research Institute of the Balearic Islands (IdISBa), Palma de Mallorca 07120, Spain
- Multidisciplinary Sepsis Unit, ICU, Son Llàtzer University Hospital, Palma de Mallorca 07198, Spain
| | - Alberto del Castillo
- Multidisciplinary Sepsis Group, Health Research Institute of the Balearic Islands (IdISBa), Palma de Mallorca 07120, Spain
- Multidisciplinary Sepsis Unit, ICU, Son Llàtzer University Hospital, Palma de Mallorca 07198, Spain
| | - Roberto de la Rica
- Multidisciplinary Sepsis Group, Health Research Institute of the Balearic Islands (IdISBa), Palma de Mallorca 07120, Spain
- Chemistry Department, University of the Balearic Islands, Palma de Mallorca 07122, Spain
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6
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Harding AT, Goff MA, Froggatt HM, Lim JK, Heaton NS. GPER1 is required to protect fetal health from maternal inflammation. Science 2021; 371:271-276. [PMID: 33446553 DOI: 10.1126/science.aba9001] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2020] [Revised: 07/23/2020] [Accepted: 12/04/2020] [Indexed: 12/11/2022]
Abstract
Type I interferon (IFN) signaling in fetal tissues causes developmental abnormalities and fetal demise. Although pathogens that infect fetal tissues can induce birth defects through the local production of type I IFN, it remains unknown why systemic IFN generated during maternal infections only rarely causes fetal developmental defects. Here, we report that activation of the guanine nucleotide-binding protein-coupled estrogen receptor 1 (GPER1) during pregnancy is both necessary and sufficient to suppress IFN signaling and does so disproportionately in reproductive and fetal tissues. Inactivation of GPER1 in mice halted fetal development and promoted fetal demise, but only in the context of maternal inflammation. Thus, GPER1 is a central regulator of IFN signaling during pregnancy that allows dynamic antiviral responses in maternal tissues while also preserving fetal health.
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Affiliation(s)
- Alfred T Harding
- Department of Molecular Genetics and Microbiology, Duke University School of Medicine, Durham, NC 27710, USA
| | - Marisa A Goff
- Department of Microbiology, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Heather M Froggatt
- Department of Molecular Genetics and Microbiology, Duke University School of Medicine, Durham, NC 27710, USA
| | - Jean K Lim
- Department of Microbiology, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Nicholas S Heaton
- Department of Molecular Genetics and Microbiology, Duke University School of Medicine, Durham, NC 27710, USA. .,Duke Human Vaccine Institute, Duke University School of Medicine, Durham, NC 27710, USA
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7
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Othumpangat S, Lindsley WG, Beezhold DH, Kashon ML, Burrell CN, Mubareka S, Noti JD. Differential Expression of Serum Exosome microRNAs and Cytokines in Influenza A and B Patients Collected in the 2016 and 2017 Influenza Seasons. Pathogens 2021; 10:pathogens10020149. [PMID: 33540650 PMCID: PMC7912959 DOI: 10.3390/pathogens10020149] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2020] [Revised: 01/27/2021] [Accepted: 01/29/2021] [Indexed: 12/27/2022] Open
Abstract
MicroRNAs (miRNAs) have remarkable stability and are key regulators of mRNA transcripts for several essential proteins required for the survival of cells and replication of the virus. Exosomes are thought to play an essential role in intercellular communications by transporting proteins and miRNAs, making them ideal in the search for biomarkers. Evidence suggests that miRNAs are involved in the regulation of influenza virus replication in many cell types. During the 2016 and 2017 influenza season, we collected blood samples from 54 patients infected with influenza and from 30 healthy volunteers to identify the potential role of circulating serum miRNAs and cytokines in influenza infection. Data comparing the exosomal miRNAs in patients with influenza B to healthy volunteers showed 76 miRNAs that were differentially expressed (p < 0.05). In contrast, 26 miRNAs were differentially expressed between patients with influenza A (p < 0.05) and the controls. Of these miRNAs, 11 were commonly expressed in both the influenza A and B patients. Interferon (IFN)-inducing protein 10 (IP-10), which is involved in IFN synthesis during influenza infection, showed the highest level of expression in both influenza A and B patients. Influenza A patients showed increased expression of IFNα, GM-CSF, interleukin (IL)-13, IL-17A, IL-1β, IL-6 and TNFα, while influenza B induced increased levels of EGF, G-CSF, IL-1α, MIP-1α, and TNF-β. In addition, hsa-miR-326, hsa-miR-15b-5p, hsa-miR-885, hsa-miR-122-5p, hsa-miR-133a-3p, and hsa-miR-150-5p showed high correlations to IL-6, IL-15, IL-17A, IL-1β, and monocyte chemoattractant protein-1 (MCP-1) with both strains of influenza. Next-generation sequencing studies of H1N1-infected human lung small airway epithelial cells also showed similar pattern of expression of miR-375-5p, miR-143-3p, 199a-3p, and miR-199a-5p compared to influenza A patients. In summary, this study provides insights into the miRNA profiling in both influenza A and B virus in circulation and a novel approach to identify the early infections through a combination of cytokines and miRNA expression.
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Affiliation(s)
- Sreekumar Othumpangat
- Allergy and Clinical Immunology Branch, Health Effects Laboratory Division, National Institute for Occupational Safety and Health, Centers for Disease Control and Prevention, Morgantown, WV 26505, USA; (W.G.L.); (D.H.B.); (J.D.N.)
- Correspondence: ; Tel.: +1-304-285-5839
| | - William G. Lindsley
- Allergy and Clinical Immunology Branch, Health Effects Laboratory Division, National Institute for Occupational Safety and Health, Centers for Disease Control and Prevention, Morgantown, WV 26505, USA; (W.G.L.); (D.H.B.); (J.D.N.)
| | - Donald H. Beezhold
- Allergy and Clinical Immunology Branch, Health Effects Laboratory Division, National Institute for Occupational Safety and Health, Centers for Disease Control and Prevention, Morgantown, WV 26505, USA; (W.G.L.); (D.H.B.); (J.D.N.)
| | - Michael L. Kashon
- Department of Biostatistics, Health Effects Laboratory Division, National Institute for Occupational Safety and Health, Centers for Disease Control and Prevention, Morgantown, WV 26505, USA;
| | - Carmen N. Burrell
- Department of Emergency Medicine, West Virginia University, Morgantown, WV 26506, USA;
- Department of Family Medicine, West Virginia University, Morgantown, WV 26506, USA
| | - Samira Mubareka
- Department of Microbiology, Division of Infectious Diseases, University of Toronto, Toronto, ON M4N 3M5, Canada;
| | - John D. Noti
- Allergy and Clinical Immunology Branch, Health Effects Laboratory Division, National Institute for Occupational Safety and Health, Centers for Disease Control and Prevention, Morgantown, WV 26505, USA; (W.G.L.); (D.H.B.); (J.D.N.)
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8
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Orihuela CJ, Maus UA, Brown JS. Can animal models really teach us anything about pneumonia? Pro. Eur Respir J 2020; 55:55/1/1901539. [DOI: 10.1183/13993003.01539-2019] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2019] [Accepted: 10/03/2019] [Indexed: 01/03/2023]
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9
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Association of polymorphisms in inflammatory cytokines encoding genes with severe cases of influenza A/H1N1 and B in an Iranian population. Virol J 2019; 16:79. [PMID: 31196204 PMCID: PMC6567579 DOI: 10.1186/s12985-019-1187-8] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2019] [Accepted: 05/30/2019] [Indexed: 02/05/2023] Open
Abstract
Background The increased levels of blood cytokines is the main immunopathological process that were attributed to severe clinical outcomes in cases of influenza A, influenza B and people with influenza-like illness (ILI). Functional genetic polymorphisms caused by single nucleotide polymorphisms (SNPs) in inflammatory cytokines genes can influence their functions either qualitatively or quantitatively, which is associated with the possibility of severe influenza infections. The aim of the present case-control study was to investigate the association of polymorphisms in inflammatory cytokines genes with influenza patients and ILI group in an Iranian population. Methods Total number of 30 influenza B, 50 influenza A (H1N1) and 96 ILI inpatient individuals were confirmed by Real-time RT-PCR and HI assays. The genotype determination was assessed for defined SNPs in IL-1β, IL-17, IL-10 and IL-28 genes. Results The frequencies of the IL-1β rs16944 (P = 0.007) and IL-17 rs2275913 (P = 0.006) genotypes were associated with severe influenza disease, while the frequencies of IL-10 rs1800872 and IL-28 rs8099917 were not associated with the disease (P > 0.05). Also, the absence of A allele in IL-17 rs2275913 SNP increased the risk of influenza A (H1N1) infection (P = 0.008). Conclusions This study demonstrated that influenza A- (H1N1) and B-infected patients and also ILI controls have different profiles of immune parameters, and individuals carrying the specific cytokine-derived polymorphisms may show different immune responses towards severe outcome.
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Yuan B, Yang C, Xia X, Zanin M, Wong SS, Yang F, Chang J, Mai Z, Zhao J, Zhang Y, Li R, Zhong N, Yang Z. The tree shrew is a promising model for the study of influenza B virus infection. Virol J 2019; 16:77. [PMID: 31174549 PMCID: PMC6555921 DOI: 10.1186/s12985-019-1171-3] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2018] [Accepted: 04/30/2019] [Indexed: 11/23/2022] Open
Abstract
Background Influenza B virus is a main causative pathogen of annual influenza epidemics, however, research on influenza B virus in general lags behind that on influenza A viruses, one of the important reasons is studies on influenza B viruses in animal models are limited. Here we investigated the tree shrew as a potential model for influenza B virus studies. Methods Tree shrews and ferrets were inoculated with either a Yamagata or Victoria lineage influenza B virus. Symptoms including nasal discharge and weight loss were observed. Nasal wash and respiratory tissues were collected at 2, 4 and 6 days post inoculation (DPI). Viral titers were measured in nasal washes and tissues were used for pathological examination and extraction of mRNA for measurement of cytokine expression. Results Clinical signs and pathological changes were also evident in the respiratory tracts of tree shrews and ferrets. Although nasal symptoms including sneezing and rhinorrhea were evident in ferrets infected with influenza B virus, tree shrews showed no significant respiratory symptoms, only milder nasal secretions appeared. Weight loss was observed in tree shrews but not ferrets. V0215 and Y12 replicated in all three animal (ferrets, tree shrews and mice) models with peak titers evident on 2DPI. There were no significant differences in peak viral titers in ferrets and tree shrews inoculated with Y12 at 2 and 4DPI, but viral titers were detected at 6DPI in tree shrews. Tree shrews infected with influenza B virus showed similar seroconversion and respiratory tract pathology to ferrets. Elevated levels of cytokines were detected in the tissues isolated from the respiratory tract after infection with either V0215 or Y12 compared to the levels in the uninfected control in both animals. Overall, the tree shrew was sensitive to infection and disease by influenza B virus. Conclusion The tree shrew to be a promising model for influenza B virus research. Electronic supplementary material The online version of this article (10.1186/s12985-019-1171-3) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Bing Yuan
- Department of Respiration, the First People's Hospital of Yunnan Province, Kunming, Yunnan, 650032, People's Republic of China.,The Affiliated Hospital of Kunming University of Science and Technology, Kunming, Yunnan, 650032, People's Republic of China
| | - Chunguang Yang
- State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Guangzhou Institute of Respiratory Health, the First Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, 510120, People's Republic of China
| | - Xueshan Xia
- Faculty of Life Science and Technology, Kunming University of Science And Technology, Kunming, Yunnan, 650500, People's Republic of China
| | - Mark Zanin
- State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Guangzhou Institute of Respiratory Health, the First Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, 510120, People's Republic of China
| | - Sook-San Wong
- State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Guangzhou Institute of Respiratory Health, the First Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, 510120, People's Republic of China
| | - Fan Yang
- Medical Faculty, Kunming University of Science And Technology, Kunming, Yunnan, 650500, People's Republic of China
| | - Jixiang Chang
- Medical Faculty, Kunming University of Science And Technology, Kunming, Yunnan, 650500, People's Republic of China
| | - Zhitong Mai
- State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Guangzhou Institute of Respiratory Health, the First Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, 510120, People's Republic of China
| | - Jin Zhao
- State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Guangzhou Institute of Respiratory Health, the First Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, 510120, People's Republic of China
| | - Yunhui Zhang
- Department of Respiration, the First People's Hospital of Yunnan Province, Kunming, Yunnan, 650032, People's Republic of China.,The Affiliated Hospital of Kunming University of Science and Technology, Kunming, Yunnan, 650032, People's Republic of China
| | - Runfeng Li
- State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Guangzhou Institute of Respiratory Health, the First Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, 510120, People's Republic of China
| | - Nanshan Zhong
- State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Guangzhou Institute of Respiratory Health, the First Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, 510120, People's Republic of China
| | - Zifeng Yang
- State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Guangzhou Institute of Respiratory Health, the First Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, 510120, People's Republic of China. .,State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Avenida Wai Long, Taipa, Macau, People's Republic of China.
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11
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Imakita N, Kitabatake M, Ouji-Sageshima N, Hara A, Morita-Takemura S, Kasahara K, Matsukawa A, Wanaka A, Mikasa K, Ito T. Abrogated Caveolin-1 expression via histone modification enzyme Setdb2 regulates brain edema in a mouse model of influenza-associated encephalopathy. Sci Rep 2019; 9:284. [PMID: 30670717 PMCID: PMC6342998 DOI: 10.1038/s41598-018-36489-8] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2018] [Accepted: 11/19/2018] [Indexed: 12/13/2022] Open
Abstract
Influenza-associated encephalopathy (IAE) is a serious complication that can follow influenza virus infection. Once a cytokine storm is induced during influenza virus infection, tight junction protein disruption occurs, which consequently leads to blood-brain barrier (BBB) breakdown. However, the details of IAE pathogenesis are not well understood. Here, we established a murine IAE model by administration of lipopolysaccharide following influenza virus infection. Brains from IAE model mice had significantly higher expression of type I interferons and inflammatory cytokines. In addition, the expression of Caveolin-1, one of the key proteins that correlate with protection of the BBB, was significantly lower in brains from the IAE group compared with the control group. We also found that, among 84 different histone modification enzymes, only SET domain bifurcated 2 (Setdb2), one of the histone methyltransferases that methylates the lysine 9 of histone H3, showed significantly higher expression in the IAE group compared with the control group. Furthermore, chromatin immunoprecipitation revealed that methylation of histone H3 lysine 9 was correlated with repression of the Caveolin-1 promoter region. These studies identify Caveolin-1 as a key regulator of BBB permeability in IAE and reveal that it acts through histone modification induced by Setdb2.
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Affiliation(s)
- Natsuko Imakita
- Department of Immunology, Nara Medical University, Kashihara, Nara, Japan.,Center for Infectious Diseases, Nara Medical University, Kashihara, Nara, Japan
| | | | | | - Atsushi Hara
- Department of Immunology, Nara Medical University, Kashihara, Nara, Japan
| | - Shoko Morita-Takemura
- Department of Anatomy & Neuroscience, Nara Medical University, Kashihara, Nara, Japan
| | - Kei Kasahara
- Center for Infectious Diseases, Nara Medical University, Kashihara, Nara, Japan
| | - Akihiro Matsukawa
- Department of Pathology and Experimental Medicine, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Okayama, Japan
| | - Akio Wanaka
- Department of Anatomy & Neuroscience, Nara Medical University, Kashihara, Nara, Japan
| | - Keiichi Mikasa
- Center for Infectious Diseases, Nara Medical University, Kashihara, Nara, Japan
| | - Toshihiro Ito
- Department of Immunology, Nara Medical University, Kashihara, Nara, Japan.
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