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Talebi S, Saeedinia A, Zeinoddini M, Ahmadpour F, Sadeghizadeh M. Evaluation of a single amino acid substitution at position 79 of human IFN-α2b in interferon-receptor assembly and activity. Prep Biochem Biotechnol 2019; 49:735-743. [PMID: 31135267 DOI: 10.1080/10826068.2019.1566143] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
Type I interferons (IFNs) are homologous cytokines that bind to a cell surface receptor and establish signaling pathways that motivate immune responses. The purpose of the current study is to assess the activity of a novel-engineered IFN-α2b. The crystallographic structure of IFN-α2b and its receptors was acquired from Protein Data Bank. Various amino acid substitutions were designed based on structural properties and other biological characteristics of residues to find the most effective amino acid on IFN affinity to advanced activities. The IFN-α2b mutants and receptors have been modeled and the interactions between two proteins have been studied as in silico by protein-protein docking for both mutants and native forms. The proper nucleic acid sequence IFN-α2 (T79Q) has been prepared based on the selected mutant. The modified IFN gene was cloned in pcDNA 3.1(-) and introduced to Chinese Hamster Ovary (CHO) cell line. Antiviral and antiproliferative assays of native and IFN-α2 (T79Q) proteins were performed in vitro. The results showed two-fold increasing in IFN-α2 (T79Q) activity (antiviral and antiproliferative activity) in comparison to native IFN-α2b. This engineered IFN-α2b may have significant novel therapeutic applications and in silico studies can be an influential method for practical research function and structure of these molecules.
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Affiliation(s)
- Samira Talebi
- a Malek Ashtar University of Technology , Tehran , Iran.,b Trauma Research Centre, Baqiyatallah University of Medical Sciences , Tehran , Iran
| | | | | | - Fathollah Ahmadpour
- b Trauma Research Centre, Baqiyatallah University of Medical Sciences , Tehran , Iran
| | - Majid Sadeghizadeh
- c Department of Genetics, School of Biological Sciences, Tarbiat Modares University , Tehran , Iran
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2
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Intracellular RNA Sensing in Mammalian Cells: Role in Stress Response and Cancer Therapies. INTERNATIONAL REVIEW OF CELL AND MOLECULAR BIOLOGY 2019; 344:31-89. [DOI: 10.1016/bs.ircmb.2018.08.005] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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3
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Berry CM. Understanding Interferon Subtype Therapy for Viral Infections: Harnessing the Power of the Innate Immune System. Cytokine Growth Factor Rev 2016; 31:83-90. [PMID: 27544015 DOI: 10.1016/j.cytogfr.2016.08.001] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2016] [Revised: 08/08/2016] [Accepted: 08/08/2016] [Indexed: 12/25/2022]
Abstract
Type I and III interferons (IFNs) of the innate immune system belong to a polygenic family, however the individual subtype mediators of the antiviral response in viral infections have been hindered by a lack of reagents. Evaluation studies using different IFN subtypes have distinguished distinct protein properties with different efficacies towards different viruses, opening promising avenues for immunotherapy. This review largely focuses on the application of IFN-α/β and IFN-λ therapies for viral infections, influenza, herpes, HIV and hepatitis. Such IFN subtype therapies may help to cure patients with virus infections where no vaccine exists. The ability of cell types to secrete a number of IFN subtypes from a multi-gene family may be an intuitive counterattack on viruses that evade IFN subtype responses. Hence, clinical use of virus-targeted IFN subtypes may restore antiviral immunity in viral infections. Accumulating evidence suggests that individual IFN subtypes have differential efficacies in selectively activating immune cell subsets to enhance antiviral immune responses leading to production of sustained B and T cell memory. Cytokine therapy can augment innate immunity leading to clearance of acute virus infections but such treatments may have limited effects on chronic virus infections that establish lifelong latency. Therefore, exploiting individual IFN subtypes to select those with the ability to sculpt protective responses as well as reinstating those targeted by viral evasion mechanisms may inform development of improved antiviral therapy.
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Affiliation(s)
- Cassandra M Berry
- School of Veterinary and Life Sciences, Molecular and Biomedical Sciences, Murdoch University, South Street, Murdoch, Perth, Western Australia, Australia.
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Tomasello E, Pollet E, Vu Manh TP, Uzé G, Dalod M. Harnessing Mechanistic Knowledge on Beneficial Versus Deleterious IFN-I Effects to Design Innovative Immunotherapies Targeting Cytokine Activity to Specific Cell Types. Front Immunol 2014; 5:526. [PMID: 25400632 PMCID: PMC4214202 DOI: 10.3389/fimmu.2014.00526] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2014] [Accepted: 10/07/2014] [Indexed: 12/15/2022] Open
Abstract
Type I interferons (IFN-I) were identified over 50 years ago as cytokines critical for host defense against viral infections. IFN-I promote anti-viral defense through two main mechanisms. First, IFN-I directly reinforce or induce de novo in potentially all cells the expression of effector molecules of intrinsic anti-viral immunity. Second, IFN-I orchestrate innate and adaptive anti-viral immunity. However, IFN-I responses can be deleterious for the host in a number of circumstances, including secondary bacterial or fungal infections, several autoimmune diseases, and, paradoxically, certain chronic viral infections. We will review the proposed nature of protective versus deleterious IFN-I responses in selected diseases. Emphasis will be put on the potentially deleterious functions of IFN-I in human immunodeficiency virus type 1 (HIV-1) infection, and on the respective roles of IFN-I and IFN-III in promoting resolution of hepatitis C virus (HCV) infection. We will then discuss how the balance between beneficial versus deleterious IFN-I responses is modulated by several key parameters including (i) the subtypes and dose of IFN-I produced, (ii) the cell types affected by IFN-I, and (iii) the source and timing of IFN-I production. Finally, we will speculate how integration of this knowledge combined with advanced biochemical manipulation of the activity of the cytokines should allow designing innovative immunotherapeutic treatments in patients. Specifically, we will discuss how induction or blockade of specific IFN-I responses in targeted cell types could promote the beneficial functions of IFN-I and/or dampen their deleterious effects, in a manner adapted to each disease.
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Affiliation(s)
- Elena Tomasello
- UM2, Centre d'Immunologie de Marseille-Luminy (CIML), Aix-Marseille University , Marseille , France ; U1104, Institut National de la Santé et de la Recherche Médicale (INSERM) , Marseille , France ; UMR7280, Centre National de la Recherche Scientifique (CNRS) , Marseille , France
| | - Emeline Pollet
- UM2, Centre d'Immunologie de Marseille-Luminy (CIML), Aix-Marseille University , Marseille , France ; U1104, Institut National de la Santé et de la Recherche Médicale (INSERM) , Marseille , France ; UMR7280, Centre National de la Recherche Scientifique (CNRS) , Marseille , France
| | - Thien-Phong Vu Manh
- UM2, Centre d'Immunologie de Marseille-Luminy (CIML), Aix-Marseille University , Marseille , France ; U1104, Institut National de la Santé et de la Recherche Médicale (INSERM) , Marseille , France ; UMR7280, Centre National de la Recherche Scientifique (CNRS) , Marseille , France
| | - Gilles Uzé
- UMR 5235, Centre National de la Recherche Scientifique (CNRS), University Montpellier II , Montpellier , France
| | - Marc Dalod
- UM2, Centre d'Immunologie de Marseille-Luminy (CIML), Aix-Marseille University , Marseille , France ; U1104, Institut National de la Santé et de la Recherche Médicale (INSERM) , Marseille , France ; UMR7280, Centre National de la Recherche Scientifique (CNRS) , Marseille , France
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5
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Levin D, Schneider WM, Hoffmann HH, Yarden G, Busetto AG, Manor O, Sharma N, Rice CM, Schreiber G. Multifaceted activities of type I interferon are revealed by a receptor antagonist. Sci Signal 2014; 7:ra50. [PMID: 24866020 DOI: 10.1126/scisignal.2004998] [Citation(s) in RCA: 77] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Type I interferons (IFNs), including various IFN-α isoforms and IFN-β, are a family of homologous, multifunctional cytokines. IFNs activate different cellular responses by binding to a common receptor that consists of two subunits, IFNAR1 and IFNAR2. In addition to stimulating antiviral responses, they also inhibit cell proliferation and modulate other immune responses. We characterized various IFNs, including a mutant IFN-α2 (IFN-1ant) that bound tightly to IFNAR2 but had markedly reduced binding to IFNAR1. Whereas IFN-1ant stimulated antiviral activity in a range of cell lines, it failed to elicit immunomodulatory and antiproliferative activities. The antiviral activities of the various IFNs tested depended on a set of IFN-sensitive genes (the "robust" genes) that were controlled by canonical IFN response elements and responded at low concentrations of IFNs. Conversely, these elements were not found in the promoters of genes required for the antiproliferative responses of IFNs (the "tunable" genes). The extent of expression of tunable genes was cell type-specific and correlated with the magnitude of the antiproliferative effects of the various IFNs. Although IFN-1ant induced the expression of robust genes similarly in five different cell lines, its antiviral activity was virus- and cell type-specific. Our findings suggest that IFN-1ant may be a therapeutic candidate for the treatment of specific viral infections without inducing the immunomodulatory and antiproliferative functions of wild-type IFN.
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Affiliation(s)
- Doron Levin
- Department of Biological Chemistry, Weizmann Institute of Science, Rehovot 76100, Israel
| | - William M Schneider
- Laboratory of Virology and Infectious Disease, Center for the Study of Hepatitis C, The Rockefeller University, New York, NY 10065, USA
| | - Hans-Heinrich Hoffmann
- Laboratory of Virology and Infectious Disease, Center for the Study of Hepatitis C, The Rockefeller University, New York, NY 10065, USA
| | - Ganit Yarden
- Department of Biological Chemistry, Weizmann Institute of Science, Rehovot 76100, Israel
| | | | - Ohad Manor
- Department of Genome Sciences, University of Washington, Seattle, WA 98195, USA
| | - Nanaocha Sharma
- Department of Biological Chemistry, Weizmann Institute of Science, Rehovot 76100, Israel
| | - Charles M Rice
- Laboratory of Virology and Infectious Disease, Center for the Study of Hepatitis C, The Rockefeller University, New York, NY 10065, USA
| | - Gideon Schreiber
- Department of Biological Chemistry, Weizmann Institute of Science, Rehovot 76100, Israel.
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Rinaldi C, Penhale WJ, Stumbles PA, Tay G, Berry CM. Modulation of innate immune responses by influenza-specific ovine polyclonal antibodies used for prophylaxis. PLoS One 2014; 9:e89674. [PMID: 24586955 PMCID: PMC3938480 DOI: 10.1371/journal.pone.0089674] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2013] [Accepted: 01/21/2014] [Indexed: 11/18/2022] Open
Abstract
In the event of a novel influenza A virus pandemic, prophylaxis mediated by antibodies provides an adjunct control option to vaccines and antivirals. This strategy is particularly pertinent to unvaccinated populations at risk during the lag time to produce and distribute an effective vaccine. Therefore, development of effective prophylactic therapies is of high importance. Although previous approaches have used systemic delivery of monoclonal antibodies or convalescent sera, available supply is a serious limitation. Here, we have investigated intranasal delivery of influenza-specific ovine polyclonal IgG antibodies for their efficacy against homologous influenza virus challenge in a mouse model. Both influenza-specific IgG and F(ab')2 reduced clinical scores, body weight loss and lung viral loads in mice treated 1 hour before virus exposure. Full protection from disease was also observed when antibody was delivered up to 3 days prior to virus infection. Furthermore, effective prophylaxis was independent of a strong innate immune response. This strategy presents a further option for prophylactic intervention against influenza A virus using ruminants to generate a bulk supply that could potentially be used in a pandemic setting, to slow virus transmission and reduce morbidity associated with a high cytokine phenotype.
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Affiliation(s)
- Catherine Rinaldi
- Centre for Forensic Science, The University of Western Australia, Nedlands, Western Australia, Australia
| | - William J. Penhale
- Molecular and Biomedical Sciences, School of Veterinary and Life Sciences, Murdoch University, Murdoch, Western Australia, Australia
| | - Philip A. Stumbles
- Molecular and Biomedical Sciences, School of Veterinary and Life Sciences, Murdoch University, Murdoch, Western Australia, Australia
| | - Guan Tay
- Centre for Forensic Science, The University of Western Australia, Nedlands, Western Australia, Australia
| | - Cassandra M. Berry
- Molecular and Biomedical Sciences, School of Veterinary and Life Sciences, Murdoch University, Murdoch, Western Australia, Australia
- * E-mail:
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7
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Purcell D, Cunningham A, Turville S, Tachedjian G, Landay A. Biology of mucosally transmitted sexual infection-translating the basic science into novel HIV intervention: a workshop summary. AIDS Res Hum Retroviruses 2012; 28:1389-96. [PMID: 22966898 DOI: 10.1089/aid.2012.0276] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
A group of over 200 international scientists came together on April 15 in Sydney, Australia just before the 2012 International Microbicides Conference as a part of a workshop to address the basic concepts and factors that modulate HIV infection at the mucosal surface. The meeting focused on defining the interaction between virus, prevailing host physiology, microbiota, and innate and adaptive immune responses and how they combine to impact the outcome at the moment of potential viral transmission. Speakers examined the biology of HIV entry during transmission, innate and natural antiviral mechanisms at the mucosa, microbicide efficacy, pharmacokinetic, and pharmacodynamics, animal models, and opportunities for combining HIV prevention strategies. Other viral infection models both in vivo and in vitro were considered for the insights they provided into HIV transmission events. The workshop raised important questions that we need to answer to further our basic understanding of host and viral factors influencing HIV transmission to inform the development of novel prevention strategies.
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8
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Piehler J, Thomas C, Garcia KC, Schreiber G. Structural and dynamic determinants of type I interferon receptor assembly and their functional interpretation. Immunol Rev 2012; 250:317-34. [PMID: 23046138 PMCID: PMC3986811 DOI: 10.1111/imr.12001] [Citation(s) in RCA: 176] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Type I interferons (IFNs) form a network of homologous cytokines that bind to a shared, heterodimeric cell surface receptor and engage signaling pathways that activate innate and adaptive immune responses. The ability of IFNs to mediate differential responses through the same cell surface receptor has been subject of a controversial debate and has important medical implications. During the past decade, a comprehensive insight into the structure, energetics, and dynamics of IFN recognition by its two-receptor subunits, as well as detailed correlations with their functional properties on the level of signal activation, gene expression, and biological responses were obtained. All type I IFNs bind the two-receptor subunits at the same sites and form structurally very similar ternary complexes. Differential IFN activities were found to be determined by different lifetimes and ligand affinities toward the receptor subunits, which dictate assembly and dynamics of the signaling complex in the plasma membrane. We present a simple model, which explains differential IFN activities based on rapid endocytosis of signaling complexes and negative feedback mechanisms interfering with ternary complex assembly. More insight into signaling pathways as well as endosomal signaling and trafficking will be required for a comprehensive understanding, which will eventually lead to therapeutic applications of IFNs with increased efficacy.
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Affiliation(s)
- Jacob Piehler
- Department of Biology, University of Osnabrück, Osnabrück, Germany
| | - Christoph Thomas
- Departments of Molecular and Cellular Physiology, and Structural Biology, Howard Hughes Medical Institute, Stanford University School of Medicine, Stanford, CA, USA
| | - K. Christopher Garcia
- Departments of Molecular and Cellular Physiology, and Structural Biology, Howard Hughes Medical Institute, Stanford University School of Medicine, Stanford, CA, USA
| | - Gideon Schreiber
- Department of Biological Chemistry, Weizmann Institute of Science, Rehovot, Israel
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9
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Lucas M, Gaudieri S. The interferon family as biomarkers of disease: renaissance of the innate immune system. Biomark Med 2012; 6:133-5. [PMID: 22448786 DOI: 10.2217/bmm.12.15] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Affiliation(s)
- Michaela Lucas
- Institute for Immunology & Infectious Diseases, Murdoch University, Murdoch, Western Australia, Australia
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