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  1. Book ; Online: Emerging Viruses: Host Immunity and Novel Therapeutic Interventions

    Chen-Yu Hsu, Alan / Smed-Sörensen, Anna / Yuan Oh, Ding / Oshiumi, Hiroyuki

    2019  

    Keywords Medicine ; Immunology ; emerging viruses ; influenza viruses ; MERS-CoV ; Flavivirus ; Ebola virus ; Hantavirus
    Size 1 electronic resource (226 pages)
    Publisher Frontiers Media SA
    Document type Book ; Online
    Note English ; Open Access
    HBZ-ID HT021230296
    ISBN 9782889457427 ; 2889457427
    Database ZB MED Catalogue: Medicine, Health, Nutrition, Environment, Agriculture

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  2. Article ; Online: Circulating Extracellular Vesicles Carry Immune Regulatory miRNAs and Regulate Vaccine Efficacy and Local Inflammatory Response After Vaccination.

    Oshiumi, Hiroyuki

    Frontiers in immunology

    2021  Volume 12, Page(s) 685344

    Abstract: Vaccination is the best prophylaxis for the prevention of infectious diseases, including coronavirus disease 2019. However, the efficacy of vaccines and onset of adverse reactions vary among individuals. Circulating extracellular vesicles (EVs) regulate ... ...

    Abstract Vaccination is the best prophylaxis for the prevention of infectious diseases, including coronavirus disease 2019. However, the efficacy of vaccines and onset of adverse reactions vary among individuals. Circulating extracellular vesicles (EVs) regulate the immune responses after vaccination by delivering microRNAs (miRNAs) to myeloid and lymphoid cells. Among these, miR-192 levels in serum EVs increase with aging, in an IL-6-dependent manner, reducing excessive IL-6 expression in aged mice, creating a negative feedback loop. Excessive IL-6 expression reduces vaccination efficacy in aged mice, while EV miR-192 improves efficacy in these aged mice as well, making this miRNA an interesting focus of study. miR-21 levels in serum EVs also increase with aging, and regulates the expression of IL-12 required for Th1 responses; therefore, EV miR-21 is expected to regulate vaccine efficacy. miR-451a, another important miRNA, is abundant in serum EVs and controls the expression of cytokines, such as type I interferon and IL-6. However, levels differ among individuals and correlate with local inflammatory symptoms experienced after a seasonal flu vaccination. These findings suggest the importance of EV miRNAs as a tool to improve vaccine efficacy and also as biomarkers to predict the immune response and adverse reactions after vaccinations.
    MeSH term(s) Aging/blood ; Aging/immunology ; COVID-19/immunology ; COVID-19/prevention & control ; COVID-19 Vaccines/immunology ; Extracellular Vesicles/metabolism ; Humans ; Interferon Type I/biosynthesis ; Interferon Type I/immunology ; Interleukin-12 Subunit p35/biosynthesis ; Interleukin-12 Subunit p35/immunology ; Interleukin-6/biosynthesis ; Interleukin-6/immunology ; MicroRNAs/blood ; MicroRNAs/genetics ; SARS-CoV-2/immunology ; Th1 Cells/immunology ; Vaccination
    Chemical Substances COVID-19 Vaccines ; IL12A protein, human ; IL6 protein, human ; Interferon Type I ; Interleukin-12 Subunit p35 ; Interleukin-6 ; MIRN192 microRNA, human ; MIRN21 microRNA, human ; MIRN451 microRNA, human ; MicroRNAs
    Language English
    Publishing date 2021-06-15
    Publishing country Switzerland
    Document type Journal Article ; Research Support, Non-U.S. Gov't ; Review
    ZDB-ID 2606827-8
    ISSN 1664-3224 ; 1664-3224
    ISSN (online) 1664-3224
    ISSN 1664-3224
    DOI 10.3389/fimmu.2021.685344
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Recent Advances and Contradictions in the Study of the Individual Roles of Ubiquitin Ligases That Regulate RIG-I-Like Receptor-Mediated Antiviral Innate Immune Responses.

    Oshiumi, Hiroyuki

    Frontiers in immunology

    2020  Volume 11, Page(s) 1296

    Abstract: RIG-I and MDA5 are cytoplasmic viral RNA sensors and are essential for antiviral innate immune responses, such as type I interferon production. Post-translational modification is critical for the activation and inactivation of RIG-I and MDA5. At least ... ...

    Abstract RIG-I and MDA5 are cytoplasmic viral RNA sensors and are essential for antiviral innate immune responses, such as type I interferon production. Post-translational modification is critical for the activation and inactivation of RIG-I and MDA5. At least seven ubiquitin ligases have been reported to be involved in either K63- or K48-linked polyubiquitination of RIG-I and MDA5, and these ubiquitin ligases are further regulated by other factors. TRIM25 is an E3 ubiquitin ligase that delivers a K63-linked polyubiquitin moiety to the caspase activation and recruitment domains (CARDs) of RIG-I, thereby activating the antiviral innate immune response. Recent studies have shown that NDR2, ZCCHC3, and Lnczc3h7a promote TRIM25-mediated RIG-I activation. Riplet is another ubiquitin ligase that mediates the K63-linked polyubiquitination of the C-terminal domain (CTD) of RIG-I; however, it was also reported that Riplet delivers the K63-linked polyubiquitin moiety to the CARDs of RIG-I as well as to the CTD, thereby activating RIG-I. Further, there are several factors that attenuate the activation of RIG-I and MDA5. RNF125, TRIM40, and c-Cbl mediate K48-linked polyubiquitination and induce degradation of RIG-I and/or MDA5. USP21 and CYLD remove the K63-linked polyubiquitin chain from RIG-I, and NLRP12 inhibits polyubiquitin-mediated RIG-I activation. Although these new regulators have been reported, their distinctive roles and functional differences remain elusive, and in some cases, studies on the topic are contradictory to each other. In the present review, recent studies related to post-translational modifications of RIG-I and MDA5 are summarized, and several controversies and unanswered questions in this field are discussed.
    MeSH term(s) Animals ; DEAD Box Protein 58/metabolism ; Host-Pathogen Interactions/immunology ; Humans ; Immunity, Innate ; Protein Binding ; Protein Processing, Post-Translational ; Receptors, Immunologic/metabolism ; Signal Transduction ; Ubiquitin-Protein Ligases/metabolism ; Ubiquitination ; Viral Proteins/metabolism ; Virus Diseases/immunology ; Virus Diseases/metabolism ; Virus Diseases/virology
    Chemical Substances Receptors, Immunologic ; Viral Proteins ; Ubiquitin-Protein Ligases (EC 2.3.2.27) ; RIGI protein, human (EC 3.6.1.-) ; DEAD Box Protein 58 (EC 3.6.4.13)
    Language English
    Publishing date 2020-06-24
    Publishing country Switzerland
    Document type Journal Article ; Research Support, Non-U.S. Gov't ; Review
    ZDB-ID 2606827-8
    ISSN 1664-3224 ; 1664-3224
    ISSN (online) 1664-3224
    ISSN 1664-3224
    DOI 10.3389/fimmu.2020.01296
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article: [The innate immune response to SARS-CoV-2].

    Takashima, Ken / Oshiumi, Hiroyuki

    Uirusu

    2021  Volume 71, Issue 1, Page(s) 33–40

    MeSH term(s) COVID-19 ; Humans ; Immune Evasion ; Immunity, Innate ; SARS-CoV-2
    Language Japanese
    Publishing date 2021-12-08
    Publishing country Japan
    Document type Journal Article
    ZDB-ID 603272-2
    ISSN 0042-6857
    ISSN 0042-6857
    DOI 10.2222/jsv.71.33
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: E3 Ubiquitin Ligase Riplet Is Expressed in T Cells and Suppresses T Cell-Mediated Antitumor Immune Responses.

    Iwamoto, Asuka / Tsukamoto, Hirotake / Nakayama, Hideki / Oshiumi, Hiroyuki

    Journal of immunology (Baltimore, Md. : 1950)

    2022  Volume 208, Issue 8, Page(s) 2067–2076

    Abstract: The E3 ubiquitin ligase Riplet mediates retinoic acid-inducible gene-I polyubiquitination and is essential for viral-induced expression of type I IFNs in dendritic cells and macrophages. The function of Riplet in innate immunity has been well ... ...

    Abstract The E3 ubiquitin ligase Riplet mediates retinoic acid-inducible gene-I polyubiquitination and is essential for viral-induced expression of type I IFNs in dendritic cells and macrophages. The function of Riplet in innate immunity has been well demonstrated; however, its role in adaptive immunity during the antitumor immune response is unclear. In this study, we examined the role of Riplet in the T cell-mediated antitumor immune response. Riplet was expressed in T cells and upregulated in CD8
    MeSH term(s) Adaptive Immunity/immunology ; Animals ; CD8-Positive T-Lymphocytes/immunology ; Dendritic Cells ; Immunity, Innate/immunology ; Mice ; Mice, Inbred C57BL ; Mice, Knockout ; T-Lymphocytes/immunology ; T-Lymphocytes, Cytotoxic/immunology ; Th1 Cells/immunology ; Ubiquitin-Protein Ligases/biosynthesis ; Ubiquitin-Protein Ligases/immunology
    Chemical Substances Rnf135 protein, mouse (EC 2.3.2.27) ; Ubiquitin-Protein Ligases (EC 2.3.2.27)
    Language English
    Publishing date 2022-04-01
    Publishing country United States
    Document type Journal Article
    ZDB-ID 3056-9
    ISSN 1550-6606 ; 0022-1767 ; 1048-3233 ; 1047-7381
    ISSN (online) 1550-6606
    ISSN 0022-1767 ; 1048-3233 ; 1047-7381
    DOI 10.4049/jimmunol.2100096
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: K63-linked polyubiquitination of LGP2 by Riplet regulates RIG-I-dependent innate immune response.

    Kouwaki, Takahisa / Nishimura, Tasuku / Wang, Guanming / Nakagawa, Reiko / Oshiumi, Hiroyuki

    EMBO reports

    2022  Volume 24, Issue 2, Page(s) e54844

    Abstract: Type I interferons (IFNs) exhibit strong antiviral activity and induce the expression of antiviral proteins. Since excessive expression of type I IFNs is harmful to the host, their expression should be turned off at the appropriate time. In this study, ... ...

    Abstract Type I interferons (IFNs) exhibit strong antiviral activity and induce the expression of antiviral proteins. Since excessive expression of type I IFNs is harmful to the host, their expression should be turned off at the appropriate time. In this study, we find that post-translational modification of LGP2, a member of the RIG-I-like receptor family, modulates antiviral innate immune responses. The LGP2 protein undergoes K63-linked polyubiquitination in response to cytoplasmic double-stranded RNAs or viral infection. Our mass spectrometry analysis reveals the K residues ubiquitinated by the Riplet ubiquitin ligase. LGP2 ubiquitination occurs with a delay compared to RIG-I ubiquitination. Interestingly, ubiquitination-defective LGP2 mutations increase the expression of type I IFN at a late phase, whereas the mutant proteins attenuate other antiviral proteins, such as SP100, PML, and ANKRD1. Our data indicate that delayed polyubiquitination of LGP2 fine-tunes RIG-I-dependent antiviral innate immune responses at a late phase of viral infection.
    MeSH term(s) Humans ; Antiviral Agents ; DEAD Box Protein 58/genetics ; DEAD Box Protein 58/metabolism ; DEAD-box RNA Helicases/genetics ; Immunity, Innate ; Interferon Type I/genetics ; Ubiquitin/metabolism ; Ubiquitination ; Virus Diseases
    Chemical Substances Antiviral Agents ; DEAD Box Protein 58 (EC 3.6.4.13) ; DEAD-box RNA Helicases (EC 3.6.4.13) ; Interferon Type I ; Ubiquitin ; RIGI protein, human (EC 3.6.1.-) ; DHX58 protein, human (EC 2.7.7.-)
    Language English
    Publishing date 2022-12-14
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2020896-0
    ISSN 1469-3178 ; 1469-221X
    ISSN (online) 1469-3178
    ISSN 1469-221X
    DOI 10.15252/embr.202254844
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article ; Online: The role of macrophages in anti-tumor immune responses: pathological significance and potential as therapeutic targets.

    Tsukamoto, Hirotake / Komohara, Yoshihiro / Oshiumi, Hiroyuki

    Human cell

    2021  Volume 34, Issue 4, Page(s) 1031–1039

    Abstract: Malignant tumors comprise various types of normal cells and tumor cells, and are infiltrated by large numbers of immune cells, including macrophages. The results of numerous studies on the function and significance of intratumoral macrophages (tumor- ... ...

    Abstract Malignant tumors comprise various types of normal cells and tumor cells, and are infiltrated by large numbers of immune cells, including macrophages. The results of numerous studies on the function and significance of intratumoral macrophages (tumor-associated macrophages) suggest that these macrophages generally enhance tumor progression rather than act as anti-tumor immune agents. Although much remains unknown, in this review, we attempt to describe the role of macrophages in the tumor microenvironment, and discuss their potential mechanisms on the recent immunotherapy.
    MeSH term(s) Cell Differentiation ; Disease Progression ; Humans ; Immune Checkpoint Inhibitors ; Immunotherapy ; Macrophage Activation ; Macrophages/classification ; Macrophages/immunology ; Molecular Targeted Therapy ; Neoplasms/immunology ; Neoplasms/therapy ; Tumor Microenvironment/immunology
    Chemical Substances Immune Checkpoint Inhibitors
    Language English
    Publishing date 2021-04-27
    Publishing country Japan
    Document type Journal Article ; Review
    ZDB-ID 1149134-6
    ISSN 1749-0774 ; 0914-7470
    ISSN (online) 1749-0774
    ISSN 0914-7470
    DOI 10.1007/s13577-021-00514-2
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article ; Online: RIG-I-Like Receptor-Mediated Recognition of Viral Genomic RNA of Severe Acute Respiratory Syndrome Coronavirus-2 and Viral Escape From the Host Innate Immune Responses.

    Kouwaki, Takahisa / Nishimura, Tasuku / Wang, Guanming / Oshiumi, Hiroyuki

    Frontiers in immunology

    2021  Volume 12, Page(s) 700926

    Abstract: RIG-I-like receptors (RLR), RIG-I and MDA5, are cytoplasmic viral RNA sensors that recognize viral double-stranded RNAs and trigger signals to induce antiviral responses, including type I interferon production. Severe acute respiratory syndrome ... ...

    Abstract RIG-I-like receptors (RLR), RIG-I and MDA5, are cytoplasmic viral RNA sensors that recognize viral double-stranded RNAs and trigger signals to induce antiviral responses, including type I interferon production. Severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) caused the coronavirus disease 2019 pandemic. However, the RLR role in innate immune response to SARS-CoV-2 has not been fully elucidated. Here, we studied the roles of RLR in cytokine expression responding to SARS-CoV-2 and found that not only MDA5 but also RIG-I are involved in innate immune responses in some types of human cells. Transfection of total RNAs extracted from SARS-CoV-2-infected cells into epithelial cells induced IFN-β, IP-10, and Ccl5 mRNA expression. The cytokine expression was reduced by knockout of either RIG-I or MDA5, suggesting that both proteins are required for appropriate innate immune response to SARS-CoV-2. Two viral genomic RNA regions strongly induced type I IFN expression, and a 200-base fragment of viral RNA preferentially induced type I IFN in a RIG-I-dependent manner. In contrast, SARS-CoV-2 infectious particles hardly induced cytokine expression, suggesting viral escape from the host response. Viral 9b protein inhibited RIG-I and MAVS interaction, and viral 7a protein destabilized the TBK1 protein, leading to attenuated IRF-3 phosphorylation required for type I IFN expression. Our data elucidated the mechanism underlying RLR-mediated response to SARS-CoV-2 infection and viral escape from the host innate immune response.
    MeSH term(s) COVID-19/immunology ; Gene Knockdown Techniques ; HEK293 Cells ; Host-Pathogen Interactions ; Humans ; Immune Evasion ; Immunity, Innate ; Interferon Regulatory Factor-3/metabolism ; Interferon Type I/metabolism ; Interferon-Induced Helicase, IFIH1/genetics ; Interferon-Induced Helicase, IFIH1/metabolism ; Phosphorylation ; RNA, Viral/immunology ; Receptors, Retinoic Acid/genetics ; Receptors, Retinoic Acid/metabolism ; SARS-CoV-2/physiology ; Severe Acute Respiratory Syndrome/immunology ; Signal Transduction ; Viral Matrix Proteins/metabolism
    Chemical Substances IRF3 protein, human ; Interferon Regulatory Factor-3 ; Interferon Type I ; PLAAT4 protein, human ; RNA, Viral ; Receptors, Retinoic Acid ; Viral Matrix Proteins ; sars7a protein, SARS virus ; IFIH1 protein, human (EC 3.6.1.-) ; Interferon-Induced Helicase, IFIH1 (EC 3.6.4.13)
    Language English
    Publishing date 2021-06-25
    Publishing country Switzerland
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2606827-8
    ISSN 1664-3224 ; 1664-3224
    ISSN (online) 1664-3224
    ISSN 1664-3224
    DOI 10.3389/fimmu.2021.700926
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article ; Online: Aging-Associated Extracellular Vesicles Contain Immune Regulatory microRNAs Alleviating Hyperinflammatory State and Immune Dysfunction in the Elderly.

    Tsukamoto, Hirotake / Kouwaki, Takahisa / Oshiumi, Hiroyuki

    iScience

    2020  Volume 23, Issue 9, Page(s) 101520

    Abstract: Aging-associated changes in the immune system often lead to immune dysfunction; however, the mechanisms that underlie this phenomenon have yet to be fully elucidated. This study found that the microRNA-192 (miR-192) is an aging-associated immune ... ...

    Abstract Aging-associated changes in the immune system often lead to immune dysfunction; however, the mechanisms that underlie this phenomenon have yet to be fully elucidated. This study found that the microRNA-192 (miR-192) is an aging-associated immune regulatory microRNA whose concentration was significantly increased in aged extracellular vesicles (EVs) due to the hyperinflammatory state of aged mice. Interestingly, EV miR-192 exhibited anti-inflammatory effects on macrophages. In our aged mouse model, aging was associated with prolonged inflammation in the lung upon stimulation with inactivated influenza whole virus particles (WVP), whereas EV miR-192 alleviated the prolonged inflammation associated with aging. The hyperinflammatory state of aged mice resulted in reduced production of specific antibodies and efficacy of vaccination with WVP; however, EV miR-192 attenuated this hyperinflammatory state and improved vaccination efficacy in aged mice. Our data indicate that aged EVs constitute a negative feedback loop that alleviates aging-associated immune dysfunction.
    Language English
    Publishing date 2020-09-01
    Publishing country United States
    Document type Journal Article
    ISSN 2589-0042
    ISSN (online) 2589-0042
    DOI 10.1016/j.isci.2020.101520
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article ; Online: HPV vaccines induce trained immunity and modulate pro-inflammatory cytokine expression in response to secondary Toll-like receptor stimulations.

    Yamaguchi, Mako / Mtali, Yohana S / Sonokawa, Hitomi / Takashima, Ken / Fukushima, Yoshimi / Kouwaki, Takahisa / Oshiumi, Hiroyuki

    Microbiology and immunology

    2023  Volume 68, Issue 2, Page(s) 65–74

    Abstract: Cervical cancer is caused mostly by human papillomavirus (HPV), and several HPV vaccines have been developed to prevent its onset. Vaccines include antigens as well as adjuvants, with adjuvants playing an important role in activating the innate immune ... ...

    Abstract Cervical cancer is caused mostly by human papillomavirus (HPV), and several HPV vaccines have been developed to prevent its onset. Vaccines include antigens as well as adjuvants, with adjuvants playing an important role in activating the innate immune responses necessary for inducing adaptive immunological responses. Recent research has shown the presence of trained immunity inside the innate immune system. However, trained immunity conferred by HPV vaccinations is not well understood. In this work, we explored the innate immune responses and trained immunity caused by two HPV vaccines, Cervarix and Gardasil. Cervarix includes monophosphoryl lipid A and an aluminum adjuvant, and it significantly increased the expression of IL-6 and IFN-β mRNAs in RAW264.7 cells. On the contrary, Gardasil, which only includes an aluminum adjuvant, exhibited little cytokine expression but increased the expression of TLRs. Furthermore, Cervarix significantly increased IL-1β secretion from mouse macrophages, while Gardasil only mildly induced IL-1β secretion. Interestingly, initial stimulation with Gardasil enhanced the expression of IL-6 and TNF-α mRNAs upon secondary stimulation with TLR ligands, indicating that Gardasil induced trained immunity in macrophages. Moreover, Gardasil injection into mice resulted in enhanced TNF-α production in sera following secondary TLR stimulation. Our findings suggest that HPV vaccinations have the ability to induce trained immunity that modulate TLR ligand responses.
    MeSH term(s) Humans ; Animals ; Mice ; Cytokines ; Human Papillomavirus Recombinant Vaccine Quadrivalent, Types 6, 11, 16, 18 ; Tumor Necrosis Factor-alpha ; Interleukin-6/genetics ; Trained Immunity ; Papillomavirus Infections/prevention & control ; Aluminum ; Papillomavirus Vaccines/genetics ; Adjuvants, Immunologic ; Toll-Like Receptors
    Chemical Substances Cytokines ; Human Papillomavirus Recombinant Vaccine Quadrivalent, Types 6, 11, 16, 18 ; Tumor Necrosis Factor-alpha ; Interleukin-6 ; Aluminum (CPD4NFA903) ; Papillomavirus Vaccines ; Adjuvants, Immunologic ; Toll-Like Receptors
    Language English
    Publishing date 2023-12-17
    Publishing country Australia
    Document type Journal Article
    ZDB-ID 224792-6
    ISSN 1348-0421 ; 0385-5600
    ISSN (online) 1348-0421
    ISSN 0385-5600
    DOI 10.1111/1348-0421.13108
    Database MEDical Literature Analysis and Retrieval System OnLINE

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