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Ming A, Zhao J, Liu Y, Wang Y, Wang X, Li J, Zhang L. O-glycosylation in viruses: A sweet tango. MLIFE 2024; 3:57-73. [PMID: 38827513 PMCID: PMC11139210 DOI: 10.1002/mlf2.12105] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/05/2023] [Revised: 09/26/2023] [Accepted: 11/07/2023] [Indexed: 06/04/2024]
Abstract
O-glycosylation is an ancient yet underappreciated protein posttranslational modification, on which many bacteria and viruses heavily rely to perform critical biological functions involved in numerous infectious diseases or even cancer. But due to the innate complexity of O-glycosylation, research techniques have been limited to study its exact role in viral attachment and entry, assembly and exit, spreading in the host cells, and the innate and adaptive immunity of the host. Recently, the advent of many newly developed methodologies (e.g., mass spectrometry, chemical biology tools, and molecular dynamics simulations) has renewed and rekindled the interest in viral-related O-glycosylation in both viral proteins and host cells, which is further fueled by the COVID-19 pandemic. In this review, we summarize recent advances in viral-related O-glycosylation, with a particular emphasis on the mucin-type O-linked α-N-acetylgalactosamine (O-GalNAc) on viral proteins and the intracellular O-linked β-N-acetylglucosamine (O-GlcNAc) modifications on host proteins. We hope to provide valuable insights into the development of antiviral reagents or vaccines for better prevention or treatment of infectious diseases.
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Affiliation(s)
- Annan Ming
- Shandong Provincial Hospital Affiliated to Shandong First Medical UniversityJinanChina
- Medical Science and Technology Innovation CenterShandong First Medical University & Shandong Academy of Medical SciencesJinanChina
| | - Jianxin Zhao
- Beijing Key Laboratory of DNA Damage Response and College of Life SciencesCapital Normal UniversityBeijingChina
| | - Yihan Liu
- Shandong Provincial Hospital Affiliated to Shandong First Medical UniversityJinanChina
- Medical Science and Technology Innovation CenterShandong First Medical University & Shandong Academy of Medical SciencesJinanChina
| | - Yibo Wang
- Laboratory of Chemical BiologyChangchun Institute of Applied Chemistry, Chinese Academy of SciencesChangchunChina
| | - Xiaohui Wang
- Laboratory of Chemical BiologyChangchun Institute of Applied Chemistry, Chinese Academy of SciencesChangchunChina
- School of Applied Chemistry and EngineeringUniversity of Science and Technology of ChinaHefeiChina
- Beijing National Laboratory for Molecular SciencesBeijingChina
| | - Jing Li
- Beijing Key Laboratory of DNA Damage Response and College of Life SciencesCapital Normal UniversityBeijingChina
| | - Leiliang Zhang
- Shandong Provincial Hospital Affiliated to Shandong First Medical UniversityJinanChina
- Medical Science and Technology Innovation CenterShandong First Medical University & Shandong Academy of Medical SciencesJinanChina
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2
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Morimoto T, Nakazawa T, Maeoka R, Nakagawa I, Tsujimura T, Matsuda R. Natural Killer Cell-Based Immunotherapy against Glioblastoma. Int J Mol Sci 2023; 24:ijms24032111. [PMID: 36768432 PMCID: PMC9916747 DOI: 10.3390/ijms24032111] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2022] [Revised: 01/17/2023] [Accepted: 01/18/2023] [Indexed: 01/25/2023] Open
Abstract
Glioblastoma (GBM) is the most aggressive and malignant primary brain tumor in adults. Despite multimodality treatment involving surgical resection, radiation therapy, chemotherapy, and tumor-treating fields, the median overall survival (OS) after diagnosis is approximately 2 years and the 5-year OS is poor. Considering the poor prognosis, novel treatment strategies are needed, such as immunotherapies, which include chimeric antigen receptor T-cell therapy, immune checkpoint inhibitors, vaccine therapy, and oncolytic virus therapy. However, these therapies have not achieved satisfactory outcomes. One reason for this is that these therapies are mainly based on activating T cells and controlling GBM progression. Natural killer (NK) cell-based immunotherapy involves the new feature of recognizing GBM via differing mechanisms from that of T cell-based immunotherapy. In this review, we focused on NK cell-based immunotherapy as a novel GBM treatment strategy.
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Affiliation(s)
- Takayuki Morimoto
- Department of Neurosurgery, Nara Medical University, Kashihara 634-8521, Japan
- Department of Neurosurgery, Nara City Hospital, Nara 630-8305, Japan
- Correspondence: (T.M.); (T.N.); Tel.: +81-744-22-3051 (T.M.); +81-745-84-9335 (T.N.)
| | - Tsutomu Nakazawa
- Department of Neurosurgery, Nara Medical University, Kashihara 634-8521, Japan
- Grandsoul Research Institute for Immunology, Inc., Uda 633-2221, Japan
- Clinic Grandsoul Nara, Uda 633-2221, Japan
- Correspondence: (T.M.); (T.N.); Tel.: +81-744-22-3051 (T.M.); +81-745-84-9335 (T.N.)
| | - Ryosuke Maeoka
- Department of Neurosurgery, Nara Medical University, Kashihara 634-8521, Japan
| | - Ichiro Nakagawa
- Department of Neurosurgery, Nara Medical University, Kashihara 634-8521, Japan
| | - Takahiro Tsujimura
- Grandsoul Research Institute for Immunology, Inc., Uda 633-2221, Japan
- Clinic Grandsoul Nara, Uda 633-2221, Japan
| | - Ryosuke Matsuda
- Department of Neurosurgery, Nara Medical University, Kashihara 634-8521, Japan
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Ghazvinian Z, Abdolahi S, Tokhanbigli S, Tarzemani S, Piccin A, Reza Zali M, Verdi J, Baghaei K. Contribution of natural killer cells in innate immunity against colorectal cancer. Front Oncol 2023; 12:1077053. [PMID: 36686835 PMCID: PMC9846259 DOI: 10.3389/fonc.2022.1077053] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2022] [Accepted: 12/13/2022] [Indexed: 01/06/2023] Open
Abstract
Natural killer cells are members of the innate immune system and promote cytotoxic activity against tumor or infected cells independently from MHC recognition. NK cells are modulated by the expression of activator/inhibitory receptors. The ratio of this activator/inhibitory receptors is responsible for the cytotoxic activity of NK cells toward the target cells. Owing to the potent anti-tumor properties of NK cells, they are considered as interesting approach in tumor treatment. Colorectal cancer (CRC) is the second most common cause of death in the world and the incidence is about 2 million new cases per year. Metastatic CRC is accompanied by a poor prognosis with less than three years of overall survival. Chemotherapy and surgery are the most adopted treatments. Besides, targeted therapy and immune checkpoint blockade are novel approach to CRC treatment. In these patients, circulating NK cells are a prognostic marker. The main target of CRC immune cell therapy is to improve the tumor cell's recognition and elimination by immune cells. Adaptive NK cell therapy is the milestone to achieve the purpose. Allogeneic NK cell therapy has been widely investigated within clinical trials. In this review, we focus on the NK related approaches including CAR NK cells, cell-based vaccines, monoclonal antibodies and immunomodulatory drugs against CRC tumoral cells.
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Affiliation(s)
- Zeinab Ghazvinian
- Department of Applied Cell Sciences, School of Advanced Technologies in Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Shahrokh Abdolahi
- Basic and Molecular Epidemiology of Gastrointestinal Disorders Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Samaneh Tokhanbigli
- Basic and Molecular Epidemiology of Gastrointestinal Disorders Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Shadi Tarzemani
- Basic and Molecular Epidemiology of Gastrointestinal Disorders Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Andrea Piccin
- Northern Ireland Blood Transfusion Service, Belfast, United Kingdom
- Department of Internal Medicine V, Medical University of Innsbruck, Innsbruck, Austria
- Department of Industrial Engineering, University of Trento, Trento, Italy
| | - Mohammad Reza Zali
- Basic and Molecular Epidemiology of Gastrointestinal Disorders Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Javad Verdi
- Department of Applied Cell Sciences, School of Advanced Technologies in Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Kaveh Baghaei
- Basic and Molecular Epidemiology of Gastrointestinal Disorders Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Iran
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4
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Varghese PM, Kishore U, Rajkumari R. Innate and adaptive immune responses against Influenza A Virus: Immune evasion and vaccination strategies. Immunobiology 2022; 227:152279. [DOI: 10.1016/j.imbio.2022.152279] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2022] [Revised: 08/31/2022] [Accepted: 09/07/2022] [Indexed: 11/25/2022]
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Human C1q Regulates Influenza A Virus Infection and Inflammatory Response via Its Globular Domain. Int J Mol Sci 2022; 23:ijms23063045. [PMID: 35328462 PMCID: PMC8949502 DOI: 10.3390/ijms23063045] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2021] [Revised: 02/22/2022] [Accepted: 02/25/2022] [Indexed: 01/27/2023] Open
Abstract
The Influenza A virus (IAV) is a severe respiratory pathogen. C1q is the first subcomponent of the complement system’s classical pathway. C1q is composed of 18 polypeptide chains. Each of these chains contains a collagen-like region located at the N terminus, and a C-terminal globular head region organized as a heterotrimeric structure (ghA, ghB and ghC). This study was aimed at investigating the complement activation-independent modulation by C1q and its individual recombinant globular heads against IAV infection. The interaction of C1q and its recombinant globular heads with IAV and its purified glycoproteins was examined using direct ELISA and far-Western blotting analysis. The effect of the complement proteins on IAV replication kinetics and immune modulation was assessed by qPCR. The IAV entry inhibitory properties of C1q and its recombinant globular heads were confirmed using cell binding and luciferase reporter assays. C1q bound IAV virions via HA, NA and M1 IAV proteins, and suppressed replication in H1N1, while promoting replication in H3N2-infected A549 cells. C1q treatment further triggered an anti-inflammatory response in H1N1 and pro-inflammatory response in H3N2-infected cells as evident from differential expression of TNF-α, NF-κB, IFN-α, IFN-β, IL-6, IL-12 and RANTES. Furthermore, C1q treatment was found to reduce luciferase reporter activity of MDCK cells transfected with H1N1 pseudotyped lentiviral particles, indicative of an entry inhibitory role of C1q against infectivity of IAV. These data appear to demonstrate the complement-independent subtype specific modulation of IAV infection by locally produced C1q.
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6
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Ferrero MR, Tavares LP, Garcia CC. The Dual Role of CCR5 in the Course of Influenza Infection: Exploring Treatment Opportunities. Front Immunol 2022; 12:826621. [PMID: 35126379 PMCID: PMC8810482 DOI: 10.3389/fimmu.2021.826621] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2021] [Accepted: 12/31/2021] [Indexed: 12/12/2022] Open
Abstract
Influenza is one of the most relevant respiratory viruses to human health causing annual epidemics, and recurrent pandemics. Influenza disease is principally associated with inappropriate activation of the immune response. Chemokine receptor 5 (CCR5) and its cognate chemokines CCL3, CCL4 and CCL5 are rapidly induced upon influenza infection, contributing to leukocyte recruitment into the airways and a consequent effective antiviral response. Here we discuss the existing evidence for CCR5 role in the host immune responses to influenza virus. Complete absence of CCR5 in mice revealed the receptor’s role in coping with influenza via the recruitment of early memory CD8+ T cells, B cell activation and later recruitment of activated CD4+ T cells. Moreover, CCR5 contributes to inflammatory resolution by enhancing alveolar macrophages survival and reprogramming macrophages to pro-resolving phenotypes. In contrast, CCR5 activation is associated with excessive recruitment of neutrophils, inflammatory monocytes, and NK cells in models of severe influenza pneumonia. The available data suggests that, while CCL5 can play a protective role in influenza infection, CCL3 may contribute to an overwhelming inflammatory process that can harm the lung tissue. In humans, the gene encoding CCR5 might contain a 32-base pair deletion, resulting in a truncated protein. While discordant data in literature regarding this CCR5 mutation and influenza severity, the association of CCR5delta32 and HIV resistance fostered the development of different CCR5 inhibitors, now being tested in lung inflammation therapy. The potential use of CCR5 inhibitors to modulate the inflammatory response in severe human influenza infections is to be addressed.
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Affiliation(s)
- Maximiliano Ruben Ferrero
- Instituto de Investigación en Biomedicina de Buenos Aires (IBioBA)-CONICET-Partner Institute of the Max Planck Society, Buenos Aires, Argentina
- Laboratory of Inflammation, Oswaldo Cruz Institute, Oswaldo Cruz Foundation (FIOCRUZ), Rio de Janeiro, Brazil
- *Correspondence: Maximiliano Ruben Ferrero,
| | - Luciana Pádua Tavares
- Pulmonary and Critical Care Medicine Division, Department of Medicine, Brigham and Women’s Hospital and Harvard Medical School, Boston, MA, United States
| | - Cristiana Couto Garcia
- Laboratory of Respiratory Virus and Measles, Instituto Oswaldo Cruz, FIOCRUZ, Rio de Janeiro, Brazil
- Instituto René Rachou, Fundação Oswaldo Cruz, Belo Horizonte, Brazil
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7
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Charge-altering releasable transporters enable phenotypic manipulation of natural killer cells for cancer immunotherapy. Blood Adv 2021; 4:4244-4255. [PMID: 32898247 DOI: 10.1182/bloodadvances.2020002355] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2020] [Accepted: 07/29/2020] [Indexed: 12/11/2022] Open
Abstract
Chimeric antigen receptor (CAR) natural killer (NK) cells are an emerging cell therapy with promising results in oncology trials. However, primary human NK cells are difficult to transfect, hampering both mechanistic studies and clinical applications of NK cells. Currently, NK cell CAR modification relies on viral vectors or cell activation. The former raises cost and tolerability issues, while the latter alters NK cell biology. Here, we report that readily synthesized and inexpensive nonviral charge-altering releasable transporters (CARTs) efficiently transfect primary human NK cells with messenger RNA without relying on NK cell activation. Compared with electroporation, CARTs transfect NK cells more efficiently, better preserve cell viability, and cause minimal reconfiguration of NK cell phenotype and function. We use CARTs to generate cytotoxic primary anti-CD19 CAR NK cells, demonstrating this technology can drive clinical applications of NK cells. To our knowledge, CARTs represent the first efficacious transfection technique for resting primary human NK cells that preserves NK cell phenotype and can enable new biological discoveries and therapeutic applications of this understudied lymphocyte subset.
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8
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Ottolenghi A, Bolel P, Sarkar R, Greenshpan Y, Iraqi M, Ghosh S, Bhattacharya B, Taylor ZV, Kundu K, Radinsky O, Gazit R, Stepensky D, Apte RN, Voronov E, Porgador A. Life-extended glycosylated IL-2 promotes Treg induction and suppression of autoimmunity. Sci Rep 2021; 11:7676. [PMID: 33828163 PMCID: PMC8027413 DOI: 10.1038/s41598-021-87102-4] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2020] [Accepted: 03/02/2021] [Indexed: 02/01/2023] Open
Abstract
IL-2 is the master-regulator cytokine for T cell dependent responses and is crucial for proliferation and survival of T cells. However, IL-2-based treatments remained marginal, in part due to short half-life. Thus, we aimed to extend IL-2 half-life by flanking the IL-2 core with sequences derived from the extensively glycosylated hinge region of the NCR2 receptor. We termed this modified IL-2: "S2A". Importantly, S2A blood half-life was extended 14-fold compared to the clinical grade IL-2, Proleukin. Low doses inoculation of S2A significantly enhanced induction of Tregs (CD4+ Regulatory T cells) in vivo, as compared to Proleukin, while both S2A and Proleukin induced low levels of CD8+ T cells. In a B16 metastatic melanoma model, S2A treatment was unable to reduce the metastatic capacity of B16 melanoma, while enhancing induction and recruitment of Tregs, compared to Proleukin. Conversely, in two autoimmune models, rheumatoid arthritis and DSS-induced colitis, S2A treatment significantly reduced the progression of disease compared to Proleukin. Our results suggest new avenues for generating long-acting IL-2 for long-standing treatment and a new technique for manipulating short-life proteins for clinical and research uses.
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Affiliation(s)
- Aner Ottolenghi
- The Shraga Segal Department of Microbiology, Immunology, and Genetics, Faculty of Health Sciences, Ben-Gurion University of the Negev, 84105, Beer Sheva, Israel
- National Institute for Biotechnology in the Negev, Ben-Gurion University of the Negev, 84105, Beer Sheva, Israel
| | - Priyanka Bolel
- The Shraga Segal Department of Microbiology, Immunology, and Genetics, Faculty of Health Sciences, Ben-Gurion University of the Negev, 84105, Beer Sheva, Israel
- National Institute for Biotechnology in the Negev, Ben-Gurion University of the Negev, 84105, Beer Sheva, Israel
| | - Rhitajit Sarkar
- The Shraga Segal Department of Microbiology, Immunology, and Genetics, Faculty of Health Sciences, Ben-Gurion University of the Negev, 84105, Beer Sheva, Israel
| | - Yariv Greenshpan
- The Shraga Segal Department of Microbiology, Immunology, and Genetics, Faculty of Health Sciences, Ben-Gurion University of the Negev, 84105, Beer Sheva, Israel
- National Institute for Biotechnology in the Negev, Ben-Gurion University of the Negev, 84105, Beer Sheva, Israel
| | - Muhammed Iraqi
- The Shraga Segal Department of Microbiology, Immunology, and Genetics, Faculty of Health Sciences, Ben-Gurion University of the Negev, 84105, Beer Sheva, Israel
- National Institute for Biotechnology in the Negev, Ben-Gurion University of the Negev, 84105, Beer Sheva, Israel
| | - Susmita Ghosh
- The Shraga Segal Department of Microbiology, Immunology, and Genetics, Faculty of Health Sciences, Ben-Gurion University of the Negev, 84105, Beer Sheva, Israel
- National Institute for Biotechnology in the Negev, Ben-Gurion University of the Negev, 84105, Beer Sheva, Israel
| | - Baisali Bhattacharya
- The Shraga Segal Department of Microbiology, Immunology, and Genetics, Faculty of Health Sciences, Ben-Gurion University of the Negev, 84105, Beer Sheva, Israel
| | - Zoe V Taylor
- The Shraga Segal Department of Microbiology, Immunology, and Genetics, Faculty of Health Sciences, Ben-Gurion University of the Negev, 84105, Beer Sheva, Israel
| | - Kiran Kundu
- The Shraga Segal Department of Microbiology, Immunology, and Genetics, Faculty of Health Sciences, Ben-Gurion University of the Negev, 84105, Beer Sheva, Israel
- National Institute for Biotechnology in the Negev, Ben-Gurion University of the Negev, 84105, Beer Sheva, Israel
| | - Olga Radinsky
- The Shraga Segal Department of Microbiology, Immunology, and Genetics, Faculty of Health Sciences, Ben-Gurion University of the Negev, 84105, Beer Sheva, Israel
| | - Roi Gazit
- The Shraga Segal Department of Microbiology, Immunology, and Genetics, Faculty of Health Sciences, Ben-Gurion University of the Negev, 84105, Beer Sheva, Israel
- National Institute for Biotechnology in the Negev, Ben-Gurion University of the Negev, 84105, Beer Sheva, Israel
| | - David Stepensky
- Department of Clinical Biochemistry and Pharmacology, Faculty of Health Sciences, Ben-Gurion University of the Negev, 84105, Beer Sheva, Israel
| | - Ron N Apte
- The Shraga Segal Department of Microbiology, Immunology, and Genetics, Faculty of Health Sciences, Ben-Gurion University of the Negev, 84105, Beer Sheva, Israel
| | - Elena Voronov
- The Shraga Segal Department of Microbiology, Immunology, and Genetics, Faculty of Health Sciences, Ben-Gurion University of the Negev, 84105, Beer Sheva, Israel
| | - Angel Porgador
- The Shraga Segal Department of Microbiology, Immunology, and Genetics, Faculty of Health Sciences, Ben-Gurion University of the Negev, 84105, Beer Sheva, Israel.
- National Institute for Biotechnology in the Negev, Ben-Gurion University of the Negev, 84105, Beer Sheva, Israel.
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Rosenstock P, Kaufmann T. Sialic Acids and Their Influence on Human NK Cell Function. Cells 2021; 10:263. [PMID: 33572710 PMCID: PMC7911748 DOI: 10.3390/cells10020263] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2020] [Revised: 01/26/2021] [Accepted: 01/26/2021] [Indexed: 12/14/2022] Open
Abstract
Sialic acids are sugars with a nine-carbon backbone, present on the surface of all cells in humans, including immune cells and their target cells, with various functions. Natural Killer (NK) cells are cells of the innate immune system, capable of killing virus-infected and tumor cells. Sialic acids can influence the interaction of NK cells with potential targets in several ways. Different NK cell receptors can bind sialic acids, leading to NK cell inhibition or activation. Moreover, NK cells have sialic acids on their surface, which can regulate receptor abundance and activity. This review is focused on how sialic acids on NK cells and their target cells are involved in NK cell function.
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Affiliation(s)
- Philip Rosenstock
- Institute for Physiological Chemistry, Martin-Luther-University Halle-Wittenberg, Hollystr. 1, D-06114 Halle/Saale, Germany;
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10
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Influenza A Virus Hemagglutinin and Other Pathogen Glycoprotein Interactions with NK Cell Natural Cytotoxicity Receptors NKp46, NKp44, and NKp30. Viruses 2021; 13:v13020156. [PMID: 33494528 PMCID: PMC7911750 DOI: 10.3390/v13020156] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2020] [Revised: 01/10/2021] [Accepted: 01/11/2021] [Indexed: 12/16/2022] Open
Abstract
Natural killer (NK) cells are part of the innate immunity repertoire, and function in the recognition and destruction of tumorigenic and pathogen-infected cells. Engagement of NK cell activating receptors can lead to functional activation of NK cells, resulting in lysis of target cells. NK cell activating receptors specific for non-major histocompatibility complex ligands are NKp46, NKp44, NKp30, NKG2D, and CD16 (also known as FcγRIII). The natural cytotoxicity receptors (NCRs), NKp46, NKp44, and NKp30, have been implicated in functional activation of NK cells following influenza virus infection via binding with influenza virus hemagglutinin (HA). In this review we describe NK cell and influenza A virus biology, and the interactions of influenza A virus HA and other pathogen lectins with NK cell natural cytotoxicity receptors (NCRs). We review concepts which intersect viral immunology, traditional virology and glycobiology to provide insights into the interactions between influenza virus HA and the NCRs. Furthermore, we provide expert opinion on future directions that would provide insights into currently unanswered questions.
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11
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Duev-Cohen A, Isaacson B, Berhani O, Charpak-Amikam Y, Friedman N, Drori Y, Mandelboim M, Mandelboim O. Altered NKp46 Recognition and Elimination of Influenza B Viruses. Viruses 2020; 13:v13010034. [PMID: 33375516 PMCID: PMC7824211 DOI: 10.3390/v13010034] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2020] [Revised: 12/17/2020] [Accepted: 12/23/2020] [Indexed: 11/23/2022] Open
Abstract
Every year, millions of people worldwide are infected with influenza, causing enormous health and economic problems. The most common type of influenza is influenza A. It is known that Natural Killer (NK) cells play an important role in controlling influenza A infection, mostly through the recognition of the viral protein hemagglutinin (HA) by the activating receptor, NKp46. In contrast, little is known regarding NK cell recognition of influenza B viruses, even though they are responsible for a third of all pediatric influenza deaths and are therefore included in the seasonal vaccine each year. Here we show that NKp46 also recognizes influenza B viruses. We show that NKp46 binds the HA protein of influenza B in a sialic acid-dependent manner, and identified the glycosylated residue in NKp46, which is critical for this interaction. We discovered that this interaction has a binding affinity approximately seven times lower than NKp46 binding of influenza A’s HA. Finally, we demonstrated, using mice deficient for the mouse orthologue of NKp46, named NCR1, that NKp46 is not important for influenza B elimination. These findings enable us to better understand the interactions between the different influenza viruses and NK cells that are known to be crucial for viral elimination.
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Affiliation(s)
- Alexandra Duev-Cohen
- The Concern Foundation Laboratories at the Lautenberg Center for Immunology and Cancer Research, The Hebrew University Hadassah Medical School, Jerusalem 9112001, Israel; (A.D.-C.); (B.I.); (O.B.); (Y.C.-A.)
| | - Batya Isaacson
- The Concern Foundation Laboratories at the Lautenberg Center for Immunology and Cancer Research, The Hebrew University Hadassah Medical School, Jerusalem 9112001, Israel; (A.D.-C.); (B.I.); (O.B.); (Y.C.-A.)
| | - Orit Berhani
- The Concern Foundation Laboratories at the Lautenberg Center for Immunology and Cancer Research, The Hebrew University Hadassah Medical School, Jerusalem 9112001, Israel; (A.D.-C.); (B.I.); (O.B.); (Y.C.-A.)
| | - Yoav Charpak-Amikam
- The Concern Foundation Laboratories at the Lautenberg Center for Immunology and Cancer Research, The Hebrew University Hadassah Medical School, Jerusalem 9112001, Israel; (A.D.-C.); (B.I.); (O.B.); (Y.C.-A.)
| | - Nehemya Friedman
- Central Virology Laboratory, Ministry of Health, Public Health Services, Chaim Sheba Medical Center, Tel Hashomer, Ramat-Gan 5265601, Israel; (N.F.); (Y.D.); (M.M.)
| | - Yaron Drori
- Central Virology Laboratory, Ministry of Health, Public Health Services, Chaim Sheba Medical Center, Tel Hashomer, Ramat-Gan 5265601, Israel; (N.F.); (Y.D.); (M.M.)
| | - Michal Mandelboim
- Central Virology Laboratory, Ministry of Health, Public Health Services, Chaim Sheba Medical Center, Tel Hashomer, Ramat-Gan 5265601, Israel; (N.F.); (Y.D.); (M.M.)
| | - Ofer Mandelboim
- The Concern Foundation Laboratories at the Lautenberg Center for Immunology and Cancer Research, The Hebrew University Hadassah Medical School, Jerusalem 9112001, Israel; (A.D.-C.); (B.I.); (O.B.); (Y.C.-A.)
- Correspondence:
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12
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Xu Q, Tang Y, Huang G. Innate immune responses in RNA viral infection. Front Med 2020; 15:333-346. [PMID: 33263837 PMCID: PMC7862985 DOI: 10.1007/s11684-020-0776-7] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2019] [Accepted: 03/14/2020] [Indexed: 12/17/2022]
Abstract
RNA viruses cause a multitude of human diseases, including several pandemic events in the past century. Upon viral invasion, the innate immune system responds rapidly and plays a key role in activating the adaptive immune system. In the innate immune system, the interactions between pathogen-associated molecular patterns and host pattern recognition receptors activate multiple signaling pathways in immune cells and induce the production of pro-inflammatory cytokines and interferons to elicit antiviral responses. Macrophages, dendritic cells, and natural killer cells are the principal innate immune components that exert antiviral activities. In this review, the current understanding of innate immunity contributing to the restriction of RNA viral infections was briefly summarized. Besides the main role of immune cells in combating viral infection, the intercellular transfer of pathogen and host-derived materials and their epigenetic and metabolic interactions associated with innate immunity was discussed. This knowledge provides an enhanced understanding of the innate immune response to RNA viral infections in general and aids in the preparation for the existing and next emerging viral infections.
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Affiliation(s)
- Qian Xu
- Divisions of Pathology and Experimental Hematology and Cancer Biology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, 45229, USA.,Department of Hematology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Yuting Tang
- Divisions of Pathology and Experimental Hematology and Cancer Biology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, 45229, USA
| | - Gang Huang
- Divisions of Pathology and Experimental Hematology and Cancer Biology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, 45229, USA.
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13
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Jung HE, Lee HK. Host Protective Immune Responses against Influenza A Virus Infection. Viruses 2020; 12:v12050504. [PMID: 32375274 PMCID: PMC7291249 DOI: 10.3390/v12050504] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2020] [Revised: 04/27/2020] [Accepted: 04/30/2020] [Indexed: 12/31/2022] Open
Abstract
Influenza viruses cause infectious respiratory disease characterized by fever, myalgia, and congestion, ranging in severity from mild to life-threating. Although enormous efforts have aimed to prevent and treat influenza infections, seasonal and pandemic influenza outbreaks remain a major public health concern. This is largely because influenza viruses rapidly undergo genetic mutations that restrict the long-lasting efficacy of vaccine-induced immune responses and therapeutic regimens. In this review, we discuss the virological features of influenza A viruses and provide an overview of current knowledge of the innate sensing of invading influenza viruses and the protective immune responses in the host.
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Affiliation(s)
- Hi Eun Jung
- Graduate School of Medical Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Korea
- Correspondence: (H.E.J.); (H.K.L.); Tel.: +82-42-350-4281 (H.K.L.)
| | - Heung Kyu Lee
- Graduate School of Medical Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Korea
- KAIST Institute for Health Science and Technology, KAIST, Daejeon 34141, Korea
- Correspondence: (H.E.J.); (H.K.L.); Tel.: +82-42-350-4281 (H.K.L.)
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14
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Farsakoglu Y, Palomino-Segura M, Latino I, Zanaga S, Chatziandreou N, Pizzagalli DU, Rinaldi A, Bolis M, Sallusto F, Stein JV, Gonzalez SF. Influenza Vaccination Induces NK-Cell-Mediated Type-II IFN Response that Regulates Humoral Immunity in an IL-6-Dependent Manner. Cell Rep 2020; 26:2307-2315.e5. [PMID: 30811982 DOI: 10.1016/j.celrep.2019.01.104] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2018] [Revised: 12/11/2018] [Accepted: 01/28/2019] [Indexed: 02/07/2023] Open
Abstract
The role of natural killer (NK) cells in the immune response against vaccines is not fully understood. Here, we examine the function of infiltrated NK cells in the initiation of the inflammatory response triggered by inactivated influenza virus vaccine in the draining lymph node (LN). We observed that, following vaccination, NK cells are recruited to the interfollicular and medullary areas of the LN and become activated by type I interferons (IFNs) produced by LN macrophages. The activation of NK cells leads to their early production of IFNγ, which in turn regulates the recruitment of IL-6+ CD11b+ dendritic cells. Finally, we demonstrate that the interleukin-6 (IL-6)-mediated inflammation is important for the development of an effective humoral response against influenza virus in the draining LN.
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Affiliation(s)
- Yagmur Farsakoglu
- Institute for Research in Biomedicine (IRB), Università della Svizzera italiana, Via Vincenzo Vela 6, 6500 Bellinzona, Switzerland; Graduate School of Cellular and Molecular Sciences, Faculty of Medicine, University of Bern, 3012 Bern, Switzerland
| | - Miguel Palomino-Segura
- Institute for Research in Biomedicine (IRB), Università della Svizzera italiana, Via Vincenzo Vela 6, 6500 Bellinzona, Switzerland; Graduate School of Cellular and Molecular Sciences, Faculty of Medicine, University of Bern, 3012 Bern, Switzerland
| | - Irene Latino
- Institute for Research in Biomedicine (IRB), Università della Svizzera italiana, Via Vincenzo Vela 6, 6500 Bellinzona, Switzerland
| | - Silvia Zanaga
- Institute for Research in Biomedicine (IRB), Università della Svizzera italiana, Via Vincenzo Vela 6, 6500 Bellinzona, Switzerland
| | - Nikolaos Chatziandreou
- Institute for Research in Biomedicine (IRB), Università della Svizzera italiana, Via Vincenzo Vela 6, 6500 Bellinzona, Switzerland
| | - Diego Ulisse Pizzagalli
- Institute for Research in Biomedicine (IRB), Università della Svizzera italiana, Via Vincenzo Vela 6, 6500 Bellinzona, Switzerland; Institute of Computational Science (ICS), Università della Svizzera italiana, Via Giuseppe Buffi 13, 6900 Lugano, Switzerland
| | - Andrea Rinaldi
- Institute of Oncology Research (IOR), Via Vincenzo Vela 6, 6500 Bellinzona, Switzerland
| | - Marco Bolis
- Institute of Oncology Research (IOR), Via Vincenzo Vela 6, 6500 Bellinzona, Switzerland; Laboratory of Molecular Biology, Instituto di Ricerche Farmacologiche Mario Negri IRCCS, via Giuseppe La Masa 19, 20156 Milano, Italy
| | - Federica Sallusto
- Institute for Research in Biomedicine (IRB), Università della Svizzera italiana, Via Vincenzo Vela 6, 6500 Bellinzona, Switzerland; Institute for Microbiology, ETH Zurich, Wolfgang-Pauli-Strasse 10, 8093 Zurich, Switzerland
| | - Jens V Stein
- Theodor Kocher Institute (TKI), University of Bern, Freiestrasse 1, 3000 Bern, Switzerland
| | - Santiago F Gonzalez
- Institute for Research in Biomedicine (IRB), Università della Svizzera italiana, Via Vincenzo Vela 6, 6500 Bellinzona, Switzerland.
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15
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Host-Virus Interaction: How Host Cells Defend against Influenza A Virus Infection. Viruses 2020; 12:v12040376. [PMID: 32235330 PMCID: PMC7232439 DOI: 10.3390/v12040376] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2020] [Revised: 03/19/2020] [Accepted: 03/25/2020] [Indexed: 02/07/2023] Open
Abstract
Influenza A viruses (IAVs) are highly contagious pathogens infecting human and numerous animals. The viruses cause millions of infection cases and thousands of deaths every year, thus making IAVs a continual threat to global health. Upon IAV infection, host innate immune system is triggered and activated to restrict virus replication and clear pathogens. Subsequently, host adaptive immunity is involved in specific virus clearance. On the other hand, to achieve a successful infection, IAVs also apply multiple strategies to avoid be detected and eliminated by the host immunity. In the current review, we present a general description on recent work regarding different host cells and molecules facilitating antiviral defenses against IAV infection and how IAVs antagonize host immune responses.
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16
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Ali A, Gyurova IE, Waggoner SN. Mutually assured destruction: the cold war between viruses and natural killer cells. Curr Opin Virol 2019; 34:130-139. [PMID: 30877885 DOI: 10.1016/j.coviro.2019.02.005] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2018] [Revised: 01/30/2019] [Accepted: 02/07/2019] [Indexed: 12/22/2022]
Abstract
Natural killer (NK) cells play a multitude of antiviral roles that are significant enough to provoke viral counterefforts to subvert their activity. As innate lymphocytes, NK cells provide a rapid source of pro-inflammatory antiviral cytokines and bring to bear cytolytic activities that are collectively meant to constrain viral replication and dissemination. Additionally, NK cells participate in adaptive immunity both by shaping virus-specific T-cell responses and by developing adaptive features themselves, including enhanced antibody-dependent effector functions. The relative importance of different functional activities of NK cells are poorly understood, thereby obfuscating clinical use of these cells. Here we focus on opposing efforts of NK cells and viruses to gain tactical superiority during infection.
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Affiliation(s)
- Ayad Ali
- Center for Autoimmune Genomics and Etiology, Cincinnati Children's Hospital Medical Center, United States; Medical Scientist Training Program, University of Cincinnati College of Medicine, United States; Immunology Graduate Training Program, University of Cincinnati College of Medicine, United States
| | - Ivayla E Gyurova
- Center for Autoimmune Genomics and Etiology, Cincinnati Children's Hospital Medical Center, United States; Pathobiology and Molecular Medicine Graduate Program, University of Cincinnati College of Medicine, United States
| | - Stephen N Waggoner
- Center for Autoimmune Genomics and Etiology, Cincinnati Children's Hospital Medical Center, United States; Medical Scientist Training Program, University of Cincinnati College of Medicine, United States; Immunology Graduate Training Program, University of Cincinnati College of Medicine, United States; Pathobiology and Molecular Medicine Graduate Program, University of Cincinnati College of Medicine, United States; Department of Pediatrics, University of Cincinnati College of Medicine, United States.
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17
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Unravelling the Role of O-glycans in Influenza A Virus Infection. Sci Rep 2018; 8:16382. [PMID: 30401951 PMCID: PMC6219607 DOI: 10.1038/s41598-018-34175-3] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2017] [Accepted: 10/09/2018] [Indexed: 11/09/2022] Open
Abstract
The initial stage of host cell infection by influenza A viruses (IAV) is mediated through interaction of the viral haemagglutinin (HA) with cell surface glycans. The binding requirement of IAVs for Galβ(1,4)Glc/ GlcNAc (lactose/lactosamine) glycans with a terminal α(2,6)-linked (human receptors) or α(2,3)-linked (avian receptors) N-acetylneuraminic residue commonly found on N-glycans, is well-established. However the role and significance of sialylated Galβ(1,3)GalNAc (core 1) epitopes that are typical O-glycoforms in influenza virus pathogenesis remains poorly detailed. Here we report a multidisciplinary study using NMR spectroscopy, virus neutralization assays and molecular modelling, into the potential for IAV to engage sialyl-Galβ(1,3)GalNAc O-glycoforms for cell attachment. H5 containing virus like particles (VLPs) derived from an H5N1 avian IAV strain show a significant involvement of the O-glycan-specific GalNAc residue, coordinated by a EQTKLY motif conserved in highly pathogenic avian influenza (HPAI) strains. Notably, human pandemic H1N1 influenza viruses shift the preference from 'human-like' α(2,6)-linkages in sialylated Galβ(1,4)Glc/GlcNAc fragments to 'avian-like' α(2,3)-linkages in sialylated Galβ(1,3)GalNAc without involvement of the GalNAc residue. Overall, our study suggests that sialylated Galβ(1,3)GalNAc as O-glycan core 1 glycoforms are involved in the influenza A virus life cycle and play a particularly crucial role during infection of HPAI strains.
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18
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Kronstad LM, Seiler C, Vergara R, Holmes SP, Blish CA. Differential Induction of IFN-α and Modulation of CD112 and CD54 Expression Govern the Magnitude of NK Cell IFN-γ Response to Influenza A Viruses. JOURNAL OF IMMUNOLOGY (BALTIMORE, MD. : 1950) 2018; 201:2117-2131. [PMID: 30143589 PMCID: PMC6143432 DOI: 10.4049/jimmunol.1800161] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/05/2018] [Accepted: 07/19/2018] [Indexed: 01/22/2023]
Abstract
In human and murine studies, IFN-γ is a critical mediator immunity to influenza. IFN-γ production is critical for viral clearance and the development of adaptive immune responses, yet excessive production of IFN-γ and other cytokines as part of a cytokine storm is associated with poor outcomes of influenza infection in humans. As NK cells are the main population of lung innate immune cells capable of producing IFN-γ early in infection, we set out to identify the drivers of the human NK cell IFN-γ response to influenza A viruses. We found that influenza triggers NK cells to secrete IFN-γ in the absence of T cells and in a manner dependent upon signaling from both cytokines and receptor-ligand interactions. Further, we discovered that the pandemic A/California/07/2009 (H1N1) strain elicits a seven-fold greater IFN-γ response than other strains tested, including a seasonal A/Victoria/361/2011 (H3N2) strain. These differential responses were independent of memory NK cells. Instead, we discovered that the A/Victoria/361/2011 influenza strain suppresses the NK cell IFN-γ response by downregulating NK-activating ligands CD112 and CD54 and by repressing the type I IFN response in a viral replication-dependent manner. In contrast, the A/California/07/2009 strain fails to repress the type I IFN response or to downregulate CD54 and CD112 to the same extent, which leads to the enhanced NK cell IFN-γ response. Our results indicate that influenza implements a strain-specific mechanism governing NK cell production of IFN-γ and identifies a previously unrecognized influenza innate immune evasion strategy.
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Affiliation(s)
- Lisa M Kronstad
- Division of Infectious Diseases and Geographic Medicine, Department of Medicine, School of Medicine, Stanford University, Stanford, CA 94305
| | - Christof Seiler
- Department of Statistics, Stanford University, Stanford, CA 94305
| | - Rosemary Vergara
- Immunology Program, School of Medicine, Stanford University Stanford, CA 94305; and
| | - Susan P Holmes
- Department of Statistics, Stanford University, Stanford, CA 94305
| | - Catherine A Blish
- Division of Infectious Diseases and Geographic Medicine, Department of Medicine, School of Medicine, Stanford University, Stanford, CA 94305;
- Immunology Program, School of Medicine, Stanford University Stanford, CA 94305; and
- Chan Zuckerberg BioHub, San Francisco, CA 94158
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19
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Guia S, Fenis A, Vivier E, Narni-Mancinelli E. Activating and inhibitory receptors expressed on innate lymphoid cells. Semin Immunopathol 2018; 40:331-341. [DOI: 10.1007/s00281-018-0685-x] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2018] [Accepted: 04/04/2018] [Indexed: 12/16/2022]
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20
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Wilk AJ, Blish CA. Diversification of human NK cells: Lessons from deep profiling. J Leukoc Biol 2018; 103:629-641. [PMID: 29350874 PMCID: PMC6133712 DOI: 10.1002/jlb.6ri0917-390r] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2017] [Revised: 12/06/2017] [Accepted: 12/29/2017] [Indexed: 12/14/2022] Open
Abstract
NK cells are innate lymphocytes with important roles in immunoregulation, immunosurveillance, and cytokine production. Originally defined on the functional basis of their "natural" ability to lyse tumor targets and thought to be a relatively homogeneous group of lymphocytes, NK cells possess a remarkable degree of phenotypic and functional diversity due to the combinatorial expression of an array of activating and inhibitory receptors. Diversification of NK cells is multifaceted: mechanisms of NK cell education that promote self-tolerance result in a heterogeneous repertoire that further diversifies upon encounters with viral pathogens. Here, we review the genetic, developmental, and environmental sources of NK cell diversity with a particular focus on deep profiling and single-cell technologies that will enable a more thorough and accurate dissection of this intricate and poorly understood lymphocyte lineage.
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Affiliation(s)
- Aaron J. Wilk
- Medical Scientist Training Program, Stanford University School of Medicine, Stanford, CA, USA
| | - Catherine A. Blish
- Medical Scientist Training Program, Stanford University School of Medicine, Stanford, CA, USA
- Department of Medicine, and Stanford Immunology, Stanford University School of Medicine, Stanford, CA, USA
- Chan Zuckerberg Biohub, San Francisco, CA, USA
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21
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Chen X, Liu S, Goraya MU, Maarouf M, Huang S, Chen JL. Host Immune Response to Influenza A Virus Infection. Front Immunol 2018; 9:320. [PMID: 29556226 PMCID: PMC5845129 DOI: 10.3389/fimmu.2018.00320] [Citation(s) in RCA: 279] [Impact Index Per Article: 46.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2017] [Accepted: 02/05/2018] [Indexed: 12/25/2022] Open
Abstract
Influenza A viruses (IAVs) are contagious pathogens responsible for severe respiratory infection in humans and animals worldwide. Upon detection of IAV infection, host immune system aims to defend against and clear the viral infection. Innate immune system is comprised of physical barriers (mucus and collectins), various phagocytic cells, group of cytokines, interferons (IFNs), and IFN-stimulated genes, which provide first line of defense against IAV infection. The adaptive immunity is mediated by B cells and T cells, characterized with antigen-specific memory cells, capturing and neutralizing the pathogen. The humoral immune response functions through hemagglutinin-specific circulating antibodies to neutralize IAV. In addition, antibodies can bind to the surface of infected cells and induce antibody-dependent cell-mediated cytotoxicity or complement activation. Although there are neutralizing antibodies against the virus, cellular immunity also plays a crucial role in the fight against IAVs. On the other hand, IAVs have developed multiple strategies to escape from host immune surveillance for successful replication. In this review, we discuss how immune system, especially innate immune system and critical molecules are involved in the antiviral defense against IAVs. In addition, we highlight how IAVs antagonize different immune responses to achieve a successful infection.
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Affiliation(s)
- Xiaoyong Chen
- Key Laboratory of Fujian-Taiwan Animal Pathogen Biology, College of Animal Sciences, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Shasha Liu
- CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences (CAS), Beijing, China.,University of Chinese Academy of Sciences, Beijing, China
| | - Mohsan Ullah Goraya
- Key Laboratory of Fujian-Taiwan Animal Pathogen Biology, College of Animal Sciences, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Mohamed Maarouf
- CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences (CAS), Beijing, China.,University of Chinese Academy of Sciences, Beijing, China
| | - Shile Huang
- Department of Biochemistry and Molecular Biology, Louisiana State University Health Sciences Center, Shreveport, LA, United States
| | - Ji-Long Chen
- Key Laboratory of Fujian-Taiwan Animal Pathogen Biology, College of Animal Sciences, Fujian Agriculture and Forestry University, Fuzhou, China.,CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences (CAS), Beijing, China
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22
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NKp46 Recognizes the Sigma1 Protein of Reovirus: Implications for Reovirus-Based Cancer Therapy. J Virol 2017; 91:JVI.01045-17. [PMID: 28724773 DOI: 10.1128/jvi.01045-17] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2017] [Accepted: 07/12/2017] [Indexed: 12/22/2022] Open
Abstract
The recent approval of oncolytic virus for therapy of melanoma patients has increased the need for precise evaluation of the mechanisms by which oncolytic viruses affect tumor growth. Here we show that the human NK cell-activating receptor NKp46 and the orthologous mouse protein NCR1 recognize the reovirus sigma1 protein in a sialic-acid-dependent manner. We identify sites of NKp46/NCR1 binding to sigma1 and show that sigma1 binding by NKp46/NCR1 leads to NK cell activation in vitro Finally, we demonstrate that NCR1 activation is essential for reovirus-based therapy in vivo Collectively, we have identified sigma1 as a novel ligand for NKp46/NCR1 and demonstrated that NKp46/NCR1 is needed both for clearance of reovirus infection and for reovirus-based tumor therapy.IMPORTANCE Reovirus infects much of the population during childhood, causing mild disease, and hence is considered to be efficiently controlled by the immune system. Reovirus also specifically infects tumor cells, leading to tumor death, and is currently being tested in human clinical trials for cancer therapy. The mechanisms by which our immune system controls reovirus infection and tumor killing are not well understood. We report here that natural killer (NK) cells recognize a viral protein named sigma1 through the NK cell-activating receptor NKp46. Using several mouse tumor models, we demonstrate the importance of NK cells in protection from reovirus infection and in reovirus killing of tumors in vivo Collectively, we identify a new ligand for the NKp46 receptor and provide evidence for the importance of NKp46 in the control of reovirus infections and in reovirus-based cancer therapy.
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23
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Vitenshtein A, Charpak-Amikam Y, Yamin R, Bauman Y, Isaacson B, Stein N, Berhani O, Dassa L, Gamliel M, Gur C, Glasner A, Gomez C, Ben-Ami R, Osherov N, Cormack BP, Mandelboim O. NK Cell Recognition of Candida glabrata through Binding of NKp46 and NCR1 to Fungal Ligands Epa1, Epa6, and Epa7. Cell Host Microbe 2017; 20:527-534. [PMID: 27736647 DOI: 10.1016/j.chom.2016.09.008] [Citation(s) in RCA: 61] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2016] [Revised: 08/10/2016] [Accepted: 09/21/2016] [Indexed: 10/20/2022]
Abstract
Natural killer (NK) cells form an important arm of the innate immune system and function to combat a wide range of invading pathogens, ranging from viruses to bacteria. However, the means by which NK cells accomplish recognition of pathogens with a limited repertoire of receptors remain largely unknown. In the current study, we describe the recognition of an emerging fungal pathogen, Candida glabrata, by the human NK cytotoxic receptor NKp46 and its mouse ortholog, NCR1. Using NCR1 knockout mice, we observed that this receptor-mediated recognition was crucial for controlling C. glabrata infection in vitro and in vivo. Finally, we delineated the fungal ligands to be the C. glabrata adhesins Epa1, Epa6, and Epa7 and demonstrated that clearance of systemic C. glabrata infections in vivo depends on their recognition by NCR1. As NKp46 and NCR1 have been previously shown to bind viral adhesion receptors, we speculate that NKp46/NCR1 may be a novel type of pattern recognition receptor.
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Affiliation(s)
- Alon Vitenshtein
- The Lautenberg Center for General and Tumor Immunology, The BioMedical Research Institute Israel Canada of the Faculty of Medicine (IMRIC), The Hebrew University Hadassah Medical School, 91120 Jerusalem, Israel
| | - Yoav Charpak-Amikam
- The Lautenberg Center for General and Tumor Immunology, The BioMedical Research Institute Israel Canada of the Faculty of Medicine (IMRIC), The Hebrew University Hadassah Medical School, 91120 Jerusalem, Israel
| | - Rachel Yamin
- The Lautenberg Center for General and Tumor Immunology, The BioMedical Research Institute Israel Canada of the Faculty of Medicine (IMRIC), The Hebrew University Hadassah Medical School, 91120 Jerusalem, Israel
| | - Yoav Bauman
- The Lautenberg Center for General and Tumor Immunology, The BioMedical Research Institute Israel Canada of the Faculty of Medicine (IMRIC), The Hebrew University Hadassah Medical School, 91120 Jerusalem, Israel
| | - Batya Isaacson
- The Lautenberg Center for General and Tumor Immunology, The BioMedical Research Institute Israel Canada of the Faculty of Medicine (IMRIC), The Hebrew University Hadassah Medical School, 91120 Jerusalem, Israel
| | - Natan Stein
- The Lautenberg Center for General and Tumor Immunology, The BioMedical Research Institute Israel Canada of the Faculty of Medicine (IMRIC), The Hebrew University Hadassah Medical School, 91120 Jerusalem, Israel
| | - Orit Berhani
- The Lautenberg Center for General and Tumor Immunology, The BioMedical Research Institute Israel Canada of the Faculty of Medicine (IMRIC), The Hebrew University Hadassah Medical School, 91120 Jerusalem, Israel
| | - Liat Dassa
- The Lautenberg Center for General and Tumor Immunology, The BioMedical Research Institute Israel Canada of the Faculty of Medicine (IMRIC), The Hebrew University Hadassah Medical School, 91120 Jerusalem, Israel
| | - Moriya Gamliel
- The Lautenberg Center for General and Tumor Immunology, The BioMedical Research Institute Israel Canada of the Faculty of Medicine (IMRIC), The Hebrew University Hadassah Medical School, 91120 Jerusalem, Israel
| | - Chamutal Gur
- The Lautenberg Center for General and Tumor Immunology, The BioMedical Research Institute Israel Canada of the Faculty of Medicine (IMRIC), The Hebrew University Hadassah Medical School, 91120 Jerusalem, Israel
| | - Ariella Glasner
- The Lautenberg Center for General and Tumor Immunology, The BioMedical Research Institute Israel Canada of the Faculty of Medicine (IMRIC), The Hebrew University Hadassah Medical School, 91120 Jerusalem, Israel
| | - Carlos Gomez
- Department of Molecular Biology and Genetics, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
| | - Ronen Ben-Ami
- Infectious Diseases Unit, Tel Aviv Sourasky Medical Center, 6423906 Tel Aviv, Israel; Sackler School of Medicine, Tel Aviv University, 39040 Tel Aviv, Israel
| | - Nir Osherov
- Department of Clinical Microbiology and Immunology, Sackler School of Medicine, Tel Aviv University, 39040 Tel Aviv, Israel
| | - Brendan P Cormack
- Department of Molecular Biology and Genetics, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA.
| | - Ofer Mandelboim
- The Lautenberg Center for General and Tumor Immunology, The BioMedical Research Institute Israel Canada of the Faculty of Medicine (IMRIC), The Hebrew University Hadassah Medical School, 91120 Jerusalem, Israel.
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24
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Pazina T, Shemesh A, Brusilovsky M, Porgador A, Campbell KS. Regulation of the Functions of Natural Cytotoxicity Receptors by Interactions with Diverse Ligands and Alterations in Splice Variant Expression. Front Immunol 2017; 8:369. [PMID: 28424697 PMCID: PMC5371597 DOI: 10.3389/fimmu.2017.00369] [Citation(s) in RCA: 58] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2017] [Accepted: 03/14/2017] [Indexed: 12/11/2022] Open
Abstract
The natural cytotoxicity receptor (NCR) family is constituted by NKp46, NKp44, and NKp30 in humans, which are expressed mainly on natural killer (NK) cells and are encoded by the ncr1, ncr2, and ncr3 genes, respectively. NCRs have classically been defined as activating receptors that trigger cytotoxicity and cytokine responses by NK cells upon engaging with ligands on tumor cells. Several new findings, however, have challenged this model and identified alternative mechanisms regulating the function of NCRs. Recent reports indicate that ligand matters, since the interaction of NKp44 with distinct ligands on target cells can either activate or inhibit NK cells. Also, the NCRs have been found to interact with distinct specificities to various heparan sulfate glycosaminoglycans, which are complex polysaccharides found in extracellular matrix or on cell surface heparan sulfate proteoglycans (HSPGs). The NCRs can engage with HSPGs in trans as a co-ligand on the target cells or in cis on the NK cell surface to regulate receptor–ligand interactions and NK cell activation. A number of splice variants of ncr2 and ncr3 have also been identified, and a predominant expression of certain variants results in inhibitory signaling through NKp44 and NKp30. Several recent studies have found that the selective expression of some of these inhibitory splice variants can significantly influence outcome in the contexts of cancer, infection, and pregnancy. These findings establish that NCR functions are more diverse than originally thought, and better understanding of their splice variant expression profiles and ligand interactions are needed to establish their functional regulation in the context of human health.
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Affiliation(s)
- Tatiana Pazina
- Blood Cell Development and Function Program, Institute for Cancer Research, Fox Chase Cancer Center, Philadelphia, PA, USA.,Federal State Budgetary Scientific Institution "Institute of Experimental Medicine", St. Petersburg, Russia
| | - Avishai Shemesh
- Faculty of Health Sciences, The Shraga Segal Department of Microbiology, Immunology and Genetics, Ben-Gurion University of the Negev, Beer Sheva, Israel
| | - Michael Brusilovsky
- Division of Allergy and Immunology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
| | - Angel Porgador
- Faculty of Health Sciences, The Shraga Segal Department of Microbiology, Immunology and Genetics, Ben-Gurion University of the Negev, Beer Sheva, Israel
| | - Kerry S Campbell
- Blood Cell Development and Function Program, Institute for Cancer Research, Fox Chase Cancer Center, Philadelphia, PA, USA
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25
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Diab M, Glasner A, Isaacson B, Bar-On Y, Drori Y, Yamin R, Duev-Cohen A, Danziger O, Zamostiano R, Mandelboim M, Jonjic S, Bacharach E, Mandelboim O. NK-cell receptors NKp46 and NCR1 control human metapneumovirus infection. Eur J Immunol 2017; 47:692-703. [DOI: 10.1002/eji.201646756] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2016] [Revised: 12/20/2016] [Accepted: 02/08/2017] [Indexed: 12/21/2022]
Affiliation(s)
- Mohammad Diab
- The Lautenberg Center for General and Tumor Immunology, the BioMedical Research Institute Israel-Canada of the Faculty of Medicine (IMRIC); The Hebrew University Hadassah Medical School; Jerusalem Israel
| | - Ariella Glasner
- The Lautenberg Center for General and Tumor Immunology, the BioMedical Research Institute Israel-Canada of the Faculty of Medicine (IMRIC); The Hebrew University Hadassah Medical School; Jerusalem Israel
| | - Batya Isaacson
- The Lautenberg Center for General and Tumor Immunology, the BioMedical Research Institute Israel-Canada of the Faculty of Medicine (IMRIC); The Hebrew University Hadassah Medical School; Jerusalem Israel
| | - Yotam Bar-On
- The Lautenberg Center for General and Tumor Immunology, the BioMedical Research Institute Israel-Canada of the Faculty of Medicine (IMRIC); The Hebrew University Hadassah Medical School; Jerusalem Israel
| | - Yaron Drori
- Central Virology Laboratory, Ministry of Health, Public Health Services; Chaim Sheba Medical Center, Tel-Hashomer; Ramat-Gan Israel
- Department of Epidemiology and Preventive Medicine, School of Public Health, Sackler Faculty of Medicine; Tel-Aviv University; Tel-Aviv Israel
| | - Rachel Yamin
- The Lautenberg Center for General and Tumor Immunology, the BioMedical Research Institute Israel-Canada of the Faculty of Medicine (IMRIC); The Hebrew University Hadassah Medical School; Jerusalem Israel
| | - Alexandra Duev-Cohen
- The Lautenberg Center for General and Tumor Immunology, the BioMedical Research Institute Israel-Canada of the Faculty of Medicine (IMRIC); The Hebrew University Hadassah Medical School; Jerusalem Israel
| | - Oded Danziger
- Department of Cell Research and Immunology, Faculty of Life Sciences; Tel Aviv University; Tel Aviv Israel
| | - Rachel Zamostiano
- Department of Cell Research and Immunology, Faculty of Life Sciences; Tel Aviv University; Tel Aviv Israel
| | - Michal Mandelboim
- Central Virology Laboratory, Ministry of Health, Public Health Services; Chaim Sheba Medical Center, Tel-Hashomer; Ramat-Gan Israel
- Department of Epidemiology and Preventive Medicine, School of Public Health, Sackler Faculty of Medicine; Tel-Aviv University; Tel-Aviv Israel
| | - Stipan Jonjic
- Department of Histology and Embryology, Faculty of Medicine; University of Rijeka; Rijeka Croatia
- Center for Proteomics, Faculty of Medicine; University of Rijeka; Rijeka Croatia
| | - Eran Bacharach
- Department of Cell Research and Immunology, Faculty of Life Sciences; Tel Aviv University; Tel Aviv Israel
| | - Ofer Mandelboim
- The Lautenberg Center for General and Tumor Immunology, the BioMedical Research Institute Israel-Canada of the Faculty of Medicine (IMRIC); The Hebrew University Hadassah Medical School; Jerusalem Israel
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26
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Zelaya H, Alvarez S, Kitazawa H, Villena J. Respiratory Antiviral Immunity and Immunobiotics: Beneficial Effects on Inflammation-Coagulation Interaction during Influenza Virus Infection. Front Immunol 2016; 7:633. [PMID: 28066442 PMCID: PMC5179578 DOI: 10.3389/fimmu.2016.00633] [Citation(s) in RCA: 62] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2016] [Accepted: 12/12/2016] [Indexed: 12/12/2022] Open
Abstract
Influenza virus (IFV) is a major respiratory pathogen of global importance, and the cause of a high degree of morbidity and mortality, especially in high-risk populations such as infants, elderly, and immunocompromised hosts. Given its high capacity to change antigenically, acquired immunity is often not effective to limit IFV infection and therefore vaccination must be constantly redesigned to achieve effective protection. Improvement of respiratory and systemic innate immune mechanisms has been proposed to reduce the incidence and severity of IFV disease. In the last decade, several research works have demonstrated that microbes with the capacity to modulate the mucosal immune system (immunobiotics) are a potential alternative to beneficially modulate the outcome of IFV infection. This review provides an update of the current status on the modulation of respiratory immunity by orally and nasally administered immunobiotics, and their beneficial impact on IFV clearance and inflammatory-mediated lung tissue damage. In particular, we describe the research of our group that investigated the influence of immunobiotics on inflammation–coagulation interactions during IFV infection. Studies have clearly demonstrated that hostile inflammation is accompanied by dysfunctional coagulation in respiratory IFV disease, and our investigations have proved that some immunobiotic strains are able to reduce viral disease severity through their capacity to modulate the immune-coagulative responses in the respiratory tract.
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Affiliation(s)
- Hortensia Zelaya
- Immunobiotics Research Group, Tucuman, Argentina; Institute of Applied Biochemistry, National University of Tucuman, Tucuman, Argentina
| | - Susana Alvarez
- Immunobiotics Research Group, Tucuman, Argentina; Institute of Applied Biochemistry, National University of Tucuman, Tucuman, Argentina; Laboratory of Immunobiotechnology, Reference Centre for Lactobacilli (CERELA-CONICET), Tucuman, Argentina
| | - Haruki Kitazawa
- Food and Feed Immunology Group, Laboratory of Animal Products Chemistry, Graduate School of Agricultural Science, Tohoku University, Sendai, Japan; Livestock Immunology Unit, International Education and Research Center for Food and Agricultural Immunology (CFAI), Graduate School of Agricultural Science, Tohoku University, Sendai, Japan
| | - Julio Villena
- Immunobiotics Research Group, Tucuman, Argentina; Laboratory of Immunobiotechnology, Reference Centre for Lactobacilli (CERELA-CONICET), Tucuman, Argentina; Food and Feed Immunology Group, Laboratory of Animal Products Chemistry, Graduate School of Agricultural Science, Tohoku University, Sendai, Japan
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27
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Abstract
Natural killer cells are a diverse group of innate lymphocytes that are specialized to rapidly respond to cancerous or virus-infected cells. NK cell function is controlled by the integration of signals from activating and inhibitory receptors expressed at the cell surface. Variegated expression patterns of these activating and inhibitory receptors at the single cell level leads to a highly diverse NK cell repertoire. Here I review the factors that influence NK cell repertoire diversity and its functional consequences for our ability to fight viruses.
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Affiliation(s)
- Catherine A. Blish
- Department of Medicine, Division of Infectious Diseases and Geographic Medicine
- Immunology Program, Stanford University School of Medicine, Stanford, California
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28
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Hadad U, Thauland TJ, Martinez OM, Butte MJ, Porgador A, Krams SM. NKp46 Clusters at the Immune Synapse and Regulates NK Cell Polarization. Front Immunol 2015; 6:495. [PMID: 26441997 PMCID: PMC4585260 DOI: 10.3389/fimmu.2015.00495] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2015] [Accepted: 09/10/2015] [Indexed: 01/09/2023] Open
Abstract
Natural killer (NK) cells play an important role in first-line defense against tumor and virus-infected cells. The activity of NK cells is tightly regulated by a repertoire of cell surface expressed inhibitory and activating receptors. NKp46 is a major NK cell-activating receptor that is involved in the elimination of target cells. NK cells form different types of synapses that result in distinct functional outcomes: cytotoxic, inhibitory, and regulatory. Recent studies revealed that complex integration of NK receptor signaling controls cytoskeletal rearrangement and other immune synapse-related events. However, the distinct nature by which NKp46 participates in NK immunological synapse formation and function remains unknown. In this study, we determined that NKp46 forms microclusters structures at the immune synapse between NK cells and target cells. Over-expression of human NKp46 is correlated with increased accumulation of F-actin mesh at the immune synapse. Concordantly, knock-down of NKp46 in primary human NK cells decreased recruitment of F-actin to the synapse. Live cell imaging experiments showed a linear correlation between NKp46 expression and lytic granules polarization to the immune synapse. Taken together, our data suggest that NKp46 signaling directly regulates the NK lytic immune synapse from early formation to late function.
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Affiliation(s)
- Uzi Hadad
- Department of Surgery, Division of Abdominal Transplantation, Stanford University , Stanford, CA , USA ; The Shraga Segal Department of Microbiology and Immunology and Genetics, Ben-Gurion University of the Negev , Beersheba , Israel
| | - Timothy J Thauland
- Department of Pediatrics, Division of Immunology, Stanford University , Stanford, CA , USA
| | - Olivia M Martinez
- Department of Surgery, Division of Abdominal Transplantation, Stanford University , Stanford, CA , USA
| | - Manish J Butte
- Department of Pediatrics, Division of Immunology, Stanford University , Stanford, CA , USA
| | - Angel Porgador
- The Shraga Segal Department of Microbiology and Immunology and Genetics, Ben-Gurion University of the Negev , Beersheba , Israel
| | - Sheri M Krams
- Department of Surgery, Division of Abdominal Transplantation, Stanford University , Stanford, CA , USA
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29
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Abstract
Influenza A viruses (IAV) are highly contagious pathogens causing dreadful losses to human and animal, around the globe. IAVs first interact with the host through epithelial cells, and the viral RNA containing a 5′-triphosphate group is thought to be the critical trigger for activation of effective innate immunity via pattern recognition receptors-dependent signaling pathways. These induced immune responses establish the antiviral state of the host for effective suppression of viral replication and enhancing viral clearance. However, IAVs have evolved a variety of mechanisms by which they can invade host cells, circumvent the host immune responses, and use the machineries of host cells to synthesize and transport their own components, which help them to establish a successful infection and replication. In this review, we will highlight the molecular mechanisms of how IAV infection stimulates the host innate immune system and strategies by which IAV evades host responses.
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Affiliation(s)
- Mohsan Ullah Goraya
- College of Animal Science, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
| | - Song Wang
- College of Animal Science, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
| | - Muhammad Munir
- The Pirbright Institute, Ash Road, Pirbright, Woking, GU24 0NF, UK
| | - Ji-Long Chen
- College of Animal Science, Fujian Agriculture and Forestry University, Fuzhou, 350002, China.
- CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences, Beijing, 100101, China.
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30
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Min-Oo G, Lanier LL. Cytomegalovirus generates long-lived antigen-specific NK cells with diminished bystander activation to heterologous infection. ACTA ACUST UNITED AC 2014; 211:2669-80. [PMID: 25422494 PMCID: PMC4267234 DOI: 10.1084/jem.20141172] [Citation(s) in RCA: 90] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Gundula Min-Oo and Lewis Lanier show that memory NK cells generated during MCMV infection respond poorly to cytokines generated during heterologous viral or bacterial infection, as compared with naïve NK cells. Natural killer (NK) cells play a key role in the host response to cytomegalovirus (CMV) and can mediate an enhanced response to secondary challenge with CMV. We assessed the ability of mouse CMV (MCMV)–induced memory Ly49H+ NK cells to respond to challenges with influenza, an acute viral infection localized to the lung, and Listeria monocytogenes, a systemic bacterial infection. MCMV-memory NK cells did not display enhanced activation or proliferation after infection with influenza or Listeria, as compared with naive Ly49H+ or Ly49H− NK cells. Memory NK cells also showed impaired activation compared with naive cells when challenged with a mutant MCMV lacking m157, highlighting their antigen-specific response. Ex vivo, MCMV-memory NK cells displayed reduced phosphorylation of STAT4 and STAT1 in response to stimulation by IL-12 and type I interferon (IFN), respectively, and IFN-γ production was reduced in response to IL-12 + IL-18 compared with naive NK cells. However, costimulation of MCMV-memory NK cells with IL-12 and m157 antigen rescues their impaired response compared with cytokines alone. These findings reveal that MCMV-primed memory NK cells are diminished in their response to cytokine-driven bystander responses to heterologous infections as they become specialized and antigen-specific for the control of MCMV upon rechallenge.
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Affiliation(s)
- Gundula Min-Oo
- Department of Microbiology and Immunology and Cancer Research Institute, University of California San Francisco, San Francisco, CA 94143 Department of Microbiology and Immunology and Cancer Research Institute, University of California San Francisco, San Francisco, CA 94143
| | - Lewis L Lanier
- Department of Microbiology and Immunology and Cancer Research Institute, University of California San Francisco, San Francisco, CA 94143 Department of Microbiology and Immunology and Cancer Research Institute, University of California San Francisco, San Francisco, CA 94143
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31
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Bar-On Y, Seidel E, Tsukerman P, Mandelboim M, Mandelboim O. Influenza virus uses its neuraminidase protein to evade the recognition of two activating NK cell receptors. J Infect Dis 2014; 210:410-8. [PMID: 24532603 DOI: 10.1093/infdis/jiu094] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
Natural Killer (NK) cells play a central role in the defense against viral infections and in the elimination of transformed cells. The recognition of pathogen-infected and tumor cells is controlled by inhibitory and activating receptors. We have previously shown that among the activating (killer) NK cell receptors the natural cytotoxicity receptors, NKp44 and NKp46, interact with the viral hemagglutinin (HA) protein expressed on the cell surface of influenza-virus-infected cells. We further showed that the interaction between NKp44/NKp46 and viral HA is sialic-acid dependent and that the recognition of HA by NKp44 and NKp46 leads to the elimination of the infected cells. Here we demonstrate that the influenza virus developed a counter-attack mechanism and that the virus uses its neuraminidase (NA) protein to prevent the recognition of HA by both the NKp44 and NKp46 receptors, resulting in reduced elimination of the infected cells by NK cells.
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Affiliation(s)
- Yotam Bar-On
- The Lautenberg Center for General and Tumor Immunology, The BioMedical Research Institute Israel-Canada of the Faculty of Medicine (IMRIC), the Hebrew University Hadassah Medical School, Jerusalem
| | - Einat Seidel
- The Lautenberg Center for General and Tumor Immunology, The BioMedical Research Institute Israel-Canada of the Faculty of Medicine (IMRIC), the Hebrew University Hadassah Medical School, Jerusalem
| | - Pinchas Tsukerman
- The Lautenberg Center for General and Tumor Immunology, The BioMedical Research Institute Israel-Canada of the Faculty of Medicine (IMRIC), the Hebrew University Hadassah Medical School, Jerusalem
| | - Michal Mandelboim
- Central Virology Laboratory, Ministry of Health, Public Health Services, Chaim, Sheba Medical Center, Ramat-Gan, Israel
| | - Ofer Mandelboim
- The Lautenberg Center for General and Tumor Immunology, The BioMedical Research Institute Israel-Canada of the Faculty of Medicine (IMRIC), the Hebrew University Hadassah Medical School, Jerusalem
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32
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Abstract
Within days after infection, natural killer (NK) cells are recruited to the lungs and play an essential role in the immune response against influenza infection. Through interactions with the virus itself, as well as viral-infected cells, NK cells secrete a variety of cytokines and can contain viral replication by killing infected cells early after influenza infection. However, the virus has means of evading NK cell responses, including escaping NK cell recognition through mutation of the viral hemagglutinin (HA) protein, regulating HA levels, and by directly infecting and destroying NK cells. Although much of our understanding of NK cell role in influenza infection has come from animal models, there is increasing information from human infection. Studies conducted during the 2009 H1N1 pandemic provided much needed information on the importance of NK cells during human infection and suggest that NK lymphopenia may correlate with increased disease severity. However, more information on how different influenza virus subtypes influence NK cell levels and activities, the role of the different NK cell receptors in infection, and the impact of NK cells on human infection, particularly in high risk populations is needed.
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33
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Natural cytotoxicity receptors and their ligands. Immunol Cell Biol 2013; 92:221-9. [PMID: 24366519 DOI: 10.1038/icb.2013.98] [Citation(s) in RCA: 198] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2013] [Revised: 11/14/2013] [Accepted: 11/16/2013] [Indexed: 12/15/2022]
Abstract
Natural killer (NK) cells are innate lymphoid cells (ILCs) that participate to the clearance of pathogen-infected cells and tumour cells. NK cells and subsets of ILCs express the natural cytotoxicity receptors (NCRs) NKp46, NKp44 and NKp30 at their surface. NCRs have been shown to recognize a broad spectrum of ligands ranging from viral-, parasite- and bacterial-derived ligands to cellular ligands; however, the full identification of NCR ligands remains to be performed and will undoubtedly contribute to a better understanding of NK cell and ILC biology.
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34
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Tripathi S, White MR, Hartshorn KL. The amazing innate immune response to influenza A virus infection. Innate Immun 2013; 21:73-98. [PMID: 24217220 DOI: 10.1177/1753425913508992] [Citation(s) in RCA: 61] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023] Open
Abstract
Influenza A viruses (IAVs) remain a major health threat and a prime example of the significance of innate immunity. Our understanding of innate immunity to IAV has grown dramatically, yielding new concepts that change the way we view innate immunity as a whole. Examples include the role of p53, autophagy, microRNA, innate lymphocytes, endothelial cells and gut commensal bacteria in pulmonary innate immunity. Although the innate response is largely beneficial, it also contributes to major complications of IAV, including lung injury, bacterial super-infection and exacerbation of reactive airways disease. Research is beginning to dissect out which components of the innate response are helpful or harmful. IAV uses its limited genetic complement to maximum effect. Several viral proteins are dedicated to combating innate responses, while other viral structural or replication proteins multitask as host immune modulators. Many host innate immune proteins also multitask, having roles in cell cycle, signaling or normal lung biology. We summarize the plethora of new findings and attempt to integrate them into the larger picture of how humans have adapted to the threat posed by this remarkable virus. We explore how our expanded knowledge suggests ways to modulate helpful and harmful inflammatory responses, and develop novel treatments.
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Affiliation(s)
- Shweta Tripathi
- Boston University School of Medicine, Department of Medicine, Boston, MA, USA
| | - Mitchell R White
- Boston University School of Medicine, Department of Medicine, Boston, MA, USA
| | - Kevan L Hartshorn
- Boston University School of Medicine, Department of Medicine, Boston, MA, USA
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35
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Bar-On Y, Glasner A, Meningher T, Achdout H, Gur C, Lankry D, Vitenshtein A, Meyers AFA, Mandelboim M, Mandelboim O. Neuraminidase-mediated, NKp46-dependent immune-evasion mechanism of influenza viruses. Cell Rep 2013; 3:1044-50. [PMID: 23602571 DOI: 10.1016/j.celrep.2013.03.034] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2012] [Revised: 02/25/2013] [Accepted: 03/20/2013] [Indexed: 11/20/2022] Open
Abstract
Natural killer (NK) cells play an essential role in the defense against influenza virus, one of the deadliest respiratory viruses known today. The NKp46 receptor, expressed by NK cells, is critical for controlling influenza infections, as influenza-virus-infected cells are eliminated through the recognition of the viral hemagglutinin (HA) protein by NKp46. Here, we describe an immune-evasion mechanism of influenza viruses that is mediated by the neuraminidase (NA) protein. By using various NA blockers, we show that NA removes sialic acid residues from NKp46 and that this leads to reduced recognition of HA. Furthermore, we provide in vivo and in vitro evidence for the existence of this NA-mediated, NKp46-dependent immune-evasion mechanism and demonstrate that NA inhibitors, which are commonly used for the treatment of influenza infections, are useful not only as blockers of virus budding but also as boosters of NKp46 recognition.
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MESH Headings
- Animals
- Antigens, Ly/genetics
- Antigens, Ly/metabolism
- Cell Line, Tumor
- Enzyme Inhibitors/pharmacology
- Hemagglutinin Glycoproteins, Influenza Virus/metabolism
- Humans
- Immune Evasion/drug effects
- Influenza A Virus, H1N1 Subtype/enzymology
- Influenza A Virus, H1N1 Subtype/physiology
- Influenza A Virus, H3N2 Subtype/enzymology
- Influenza A Virus, H3N2 Subtype/physiology
- Killer Cells, Natural/immunology
- Killer Cells, Natural/metabolism
- Mice
- Mice, Knockout
- Natural Cytotoxicity Triggering Receptor 1/deficiency
- Natural Cytotoxicity Triggering Receptor 1/genetics
- Natural Cytotoxicity Triggering Receptor 1/metabolism
- Neuraminidase/antagonists & inhibitors
- Neuraminidase/metabolism
- Orthomyxoviridae/enzymology
- Orthomyxoviridae/physiology
- Oseltamivir/pharmacology
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Affiliation(s)
- Yotam Bar-On
- The Lautenberg Center for General and Tumor Immunology, Institute for Medical Research Israel-Canada (IMRIC), Faculty of Medicine, Hebrew University Hadassah Medical School, Jerusalem 91120, Israel
| | - Ariella Glasner
- The Lautenberg Center for General and Tumor Immunology, Institute for Medical Research Israel-Canada (IMRIC), Faculty of Medicine, Hebrew University Hadassah Medical School, Jerusalem 91120, Israel
| | - Tal Meningher
- Central Virology Laboratory, Ministry of Health, Public Health Services, Chaim Sheba Medical Center, Tel Hashomer, Ramat-Gan 52662, Israel
- The Mina & Everard Goodman Faculty of Life Sciences, Bar-Ilan University, Ramat-Gan 52900, Israel
| | - Hagit Achdout
- The Lautenberg Center for General and Tumor Immunology, Institute for Medical Research Israel-Canada (IMRIC), Faculty of Medicine, Hebrew University Hadassah Medical School, Jerusalem 91120, Israel
- Department of Infectious Diseases, Israel Institute for Biological Research, Ness-Ziona 74100, Israel
| | - Chamutal Gur
- The Lautenberg Center for General and Tumor Immunology, Institute for Medical Research Israel-Canada (IMRIC), Faculty of Medicine, Hebrew University Hadassah Medical School, Jerusalem 91120, Israel
| | - Dikla Lankry
- The Lautenberg Center for General and Tumor Immunology, Institute for Medical Research Israel-Canada (IMRIC), Faculty of Medicine, Hebrew University Hadassah Medical School, Jerusalem 91120, Israel
| | - Alon Vitenshtein
- The Lautenberg Center for General and Tumor Immunology, Institute for Medical Research Israel-Canada (IMRIC), Faculty of Medicine, Hebrew University Hadassah Medical School, Jerusalem 91120, Israel
| | - Adrienne F A Meyers
- National Laboratory for HIV Immunology, National HIV and Retrovirology Laboratories, Public Health Agency of Canada, Winnipeg R3E 3R2, Canada
- Department of Medical Microbiology, University of Manitoba, Winnipeg R3E 0J9, Canada
| | - Michal Mandelboim
- Central Virology Laboratory, Ministry of Health, Public Health Services, Chaim Sheba Medical Center, Tel Hashomer, Ramat-Gan 52662, Israel
| | - Ofer Mandelboim
- The Lautenberg Center for General and Tumor Immunology, Institute for Medical Research Israel-Canada (IMRIC), Faculty of Medicine, Hebrew University Hadassah Medical School, Jerusalem 91120, Israel
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36
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Seidel E, Glasner A, Mandelboim O. Virus-mediated inhibition of natural cytotoxicity receptor recognition. Cell Mol Life Sci 2012; 69:3911-20. [PMID: 22547090 PMCID: PMC11115132 DOI: 10.1007/s00018-012-1001-x] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2012] [Revised: 04/16/2012] [Accepted: 04/17/2012] [Indexed: 12/29/2022]
Abstract
Natural killer (NK) cells are a part of the innate immune system that functions mainly to kill transformed and infected cells. Their activity is controlled by signals derived from a panel of activating and inhibitory receptors. The natural cytotoxicity receptors (NCRs): NKp30, NKp44, and NKp46 (NCR1 in mice) are prominent among the activating NK cell receptors and they are, notably, the only NK-activating receptors that are able to recognize pathogen-derived ligands. In addition, the NCRs also recognize cellular ligands, the identity of which remains largely unknown. In this review, we summarize the current knowledge regarding viruses that are recognized by the NCRs, focusing on the diverse immune-evasion mechanisms employed by viruses to escape this detection. We also discuss the unique role the NCRs have in regulating NK cell activity with particular emphasis on the in vivo function of NKp46/NCR1.
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Affiliation(s)
- Einat Seidel
- The Department of Immunology and Cancer Research, The Lautenberg Center for General and Tumor Immunology, IMRIC, Hadassah Medical School, The Hebrew University, 91120 Jerusalem, Israel
| | - Ariella Glasner
- The Department of Immunology and Cancer Research, The Lautenberg Center for General and Tumor Immunology, IMRIC, Hadassah Medical School, The Hebrew University, 91120 Jerusalem, Israel
| | - Ofer Mandelboim
- The Department of Immunology and Cancer Research, The Lautenberg Center for General and Tumor Immunology, IMRIC, Hadassah Medical School, The Hebrew University, 91120 Jerusalem, Israel
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37
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Krämer B, Körner C, Kebschull M, Glässner A, Eisenhardt M, Nischalke HD, Alexander M, Sauerbruch T, Spengler U, Nattermann J. Natural killer p46High expression defines a natural killer cell subset that is potentially involved in control of hepatitis C virus replication and modulation of liver fibrosis. Hepatology 2012; 56:1201-13. [PMID: 22532190 DOI: 10.1002/hep.25804] [Citation(s) in RCA: 112] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/19/2011] [Accepted: 04/16/2012] [Indexed: 12/11/2022]
Abstract
UNLABELLED Natural killer (NK) cells play a role in the early control and natural course of hepatitis C virus (HCV) infection. NK cell function is regulated by a multitude of receptors, including activating NKp46 receptor. However, reports on NKp46 in hepatitis C are controversial. Therefore, we investigated the hepatic recruitment and function of NKp46(+) NK cells, considering differential surface expression of NKp46 resulting in NKp46(High) and NKp46(Dim) subsets. Intra- and extrahepatic NK-cell subsets from HCV-infected patients were characterized by flow cytometry. Cytotoxic activity and interferon-gamma (IFN-γ) secretion were studied using K-562, P815, and primary hepatic stellate cells as targets. Anti-HCV activity of NK-cell subsets was studied using the replicon system. Density of NKp46 surface expression clearly segregated NKp46(Dim) and NKp46(High) subsets, which differed significantly with respect to the coexpression of maturation markers and NK-cell receptors. More important, NKp46(High) NK cells showed a higher cytolytic activity and stronger IFN-γ secretion than NKp46(Dim) NK cells. Accordingly, NKp46(High) NK cells efficiently blocked HCV replication in vitro. Blocking experiments confirmed an important role for the NKp46 receptor. Furthermore, we found an intrahepatic accumulation of NKp46(High) NK cells. Of note, high cytolytic activity of NKp46(High) NK cells was also confirmed in the intrahepatic NK-cell population, and the frequency of intrahepatic NKp46(High) NK cells was inversely correlated with HCV-RNA levels and fibrosis stage. CONCLUSIONS NKp46(High) expression defines a specific NK-cell subset that may be involved in both the suppression of HCV replication and HCV-associated liver damage underpinning the role of NK cells in the immunopathogenesis of HCV.
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Affiliation(s)
- Benjamin Krämer
- Department of Internal Medicine I, University of Bonn, Bonn, Germany
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38
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van de Sandt CE, Kreijtz JHCM, Rimmelzwaan GF. Evasion of influenza A viruses from innate and adaptive immune responses. Viruses 2012; 4:1438-76. [PMID: 23170167 PMCID: PMC3499814 DOI: 10.3390/v4091438] [Citation(s) in RCA: 148] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2012] [Revised: 08/10/2012] [Accepted: 08/22/2012] [Indexed: 12/16/2022] Open
Abstract
The influenza A virus is one of the leading causes of respiratory tract infections in humans. Upon infection with an influenza A virus, both innate and adaptive immune responses are induced. Here we discuss various strategies used by influenza A viruses to evade innate immune responses and recognition by components of the humoral and cellular immune response, which consequently may result in reduced clearing of the virus and virus-infected cells. Finally, we discuss how the current knowledge about immune evasion can be used to improve influenza A vaccination strategies.
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Affiliation(s)
- Carolien E van de Sandt
- Department of Virology, ErasmusMC, Dr. Molewaterplein 50, 3015 GE, Rotterdam, The Netherlands.
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39
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Brusilovsky M, Rosental B, Shemesh A, Appel MY, Porgador A. Human NK cell recognition of target cells in the prism of natural cytotoxicity receptors and their ligands. J Immunotoxicol 2012; 9:267-74. [PMID: 22524686 DOI: 10.3109/1547691x.2012.675366] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023] Open
Abstract
The matter of the pathogen- and cancer-associated ligands recognized by the Natural Cytotoxicity Receptors (NCRs) has been a subject of intense research ever since the identification of the NCRs more than 12 years ago by Alessandro and Lorenzo Moretta: NKp46 in 1997, NKp44 in 1998, and finally NKp30 in 1999. Expression patterns recognized by NCRs include pathogen-derived, pathogen-induced, and cancer-associated cellular 'self' ligands. Pathogen-exposed cells may exhibit both types of pathogen-associated ligands. Transformed cells, in contrast, exhibit only 'self' ligands which are derived from both the intracellular- and membrane-associated milieu of self molecules. These expression patterns allow for NCR-based NK cell discrimination between healthy and affected cells, in the realms of both pathogenic infection and potential tumorigenesis. The focus of this review is on the current knowledge regarding the identities of NCR ligands and the type of target cells expressing these ligands.
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Affiliation(s)
- Michael Brusilovsky
- The Shraga Segal Department of Microbiology and Immunology, Faculty of Health Sciences and the National Institute of Biotechnology in the Negev, Ben-Gurion University of the Negev, Beer-Sheva, Israel
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Abstract
The human gut mucosa is a major site of human immunodeficiency virus (HIV) infection and infection-associated pathogenesis. Increasing evidence shows that natural killer (NK) cells have an important role in control of HIV infection, but the mechanism(s) by which they mediate antiviral activity in the gut is unclear. Here, we show that two distinct subsets of NK cells exist in the gut, one localized to intraepithelial spaces (intraepithelial lymphocytes, IELs) and the other to the lamina propria (LP). The frequency of both subsets of NK cells was reduced in chronic infection, whereas IEL NK cells remained stable in spontaneous controllers with protective killer immunoglobulin-like receptor/human leukocyte antigen genotypes. Both IEL and LP NK cells were significantly expanded in immunological non-responsive patients, who incompletely recovered CD4+ T cells on highly active antiretroviral therapy (HAART). These data suggest that both IEL and LP NK cells may expand in the gut in an effort to compensate for compromised CD4+ T-cell recovery, but that only IEL NK cells may be involved in providing durable control of HIV in the gut.
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Gillard GO, Bivas-Benita M, Hovav AH, Grandpre LE, Panas MW, Seaman MS, Haynes BF, Letvin NL. Thy1+ NK [corrected] cells from vaccinia virus-primed mice confer protection against vaccinia virus challenge in the absence of adaptive lymphocytes. PLoS Pathog 2011; 7:e1002141. [PMID: 21829360 PMCID: PMC3150274 DOI: 10.1371/journal.ppat.1002141] [Citation(s) in RCA: 100] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2010] [Accepted: 05/09/2011] [Indexed: 11/29/2022] Open
Abstract
While immunological memory has long been considered the province of T- and B- lymphocytes, it has recently been reported that innate cell populations are capable of mediating memory responses. We now show that an innate memory immune response is generated in mice following infection with vaccinia virus, a poxvirus for which no cognate germline-encoded receptor has been identified. This immune response results in viral clearance in the absence of classical adaptive T and B lymphocyte populations, and is mediated by a Thy1+ subset of natural killer (NK) cells. We demonstrate that immune protection against infection from a lethal dose of virus can be adoptively transferred with memory hepatic Thy1+ NK cells that were primed with live virus. Our results also indicate that, like classical immunological memory, stronger innate memory responses form in response to priming with live virus than a highly attenuated vector. These results demonstrate that a defined innate memory cell population alone can provide host protection against a lethal systemic infection through viral clearance. Immunological memory is a hallmark of adaptive immunity and provides the basis for our ability to become ‘immune’ to pathogens to which we have previously been exposed, and provides the basis for vaccination. For decades, the paradigm held that only the classical adaptive lymphocytes were capable of forming and maintaining protective immunological memory. Recently, several papers have shown the capacity of an innate cell population, a subset of natural killer (NK) cells, to exhibit certain aspects of immunological memory. Here we show that innate memory forms in response to infection with vaccinia virus and resides in a discrete subset of NK cells. We further demonstrate that this innate memory provides significant host protection against a subsequent systemic infection with a lethal dose of vaccinia virus, in some cases resulting in the complete clearance of detectable virus. We also demonstrate that priming with live, replicating virus stimulates innate memory more robustly than a highly attenuated vector. These findings shed new light on this emergent area of immunology, and hold significant implications for harnessing innate memory as part of creating novel vaccination strategies.
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Affiliation(s)
- Geoffrey O. Gillard
- Division of Viral Pathogenesis, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts, United States of America
| | - Maytal Bivas-Benita
- Division of Viral Pathogenesis, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts, United States of America
| | - Avi-Hai Hovav
- Division of Viral Pathogenesis, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts, United States of America
- Institute of Dental Sciences, Hebrew University-Hadassah School of Dental Medicine, Jerusalem, Israel
| | - Lauren E. Grandpre
- Division of Viral Pathogenesis, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts, United States of America
| | - Michael W. Panas
- Division of Viral Pathogenesis, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts, United States of America
| | - Michael S. Seaman
- Division of Viral Pathogenesis, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts, United States of America
| | - Barton F. Haynes
- Duke University School of Medicine, Duke University, Durham, North Carolina, United States of America
| | - Norman L. Letvin
- Division of Viral Pathogenesis, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts, United States of America
- * E-mail:
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Guo H, Kumar P, Malarkannan S. Evasion of natural killer cells by influenza virus. J Leukoc Biol 2010; 89:189-94. [PMID: 20682623 DOI: 10.1189/jlb.0610319] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
NK cells are important innate immune effectors during influenza virus infection. However, the influenza virus seems able to use several tactics to counter NK cell recognition for immune evasion. In this review, we will summarize and discuss recent advances regarding the understanding of NK cell evasion mechanisms manipulated by the influenza virus to facilitate its rapid replication inside the respiratory epithelial cells.
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Affiliation(s)
- Hailong Guo
- Department of Microbiology and Immunology, University of Rochester, Rochester, New York, USA.
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