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Suprunenko T, Hofer MJ. Complexities of Type I Interferon Biology: Lessons from LCMV. Viruses 2019; 11:v11020172. [PMID: 30791575 PMCID: PMC6409748 DOI: 10.3390/v11020172] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2019] [Revised: 02/17/2019] [Accepted: 02/18/2019] [Indexed: 12/11/2022] Open
Abstract
Over the past decades, infection of mice with lymphocytic choriomeningitis virus (LCMV) has provided an invaluable insight into our understanding of immune responses to viruses. In particular, this model has clarified the central roles that type I interferons play in initiating and regulating host responses. The use of different strains of LCMV and routes of infection has allowed us to understand how type I interferons are critical in controlling virus replication and fostering effective antiviral immunity, but also how they promote virus persistence and functional exhaustion of the immune response. Accordingly, these discoveries have formed the foundation for the development of novel treatments for acute and chronic viral infections and even extend into the management of malignant tumors. Here we review the fundamental insights into type I interferon biology gained using LCMV as a model and how the diversity of LCMV strains, dose, and route of administration have been used to dissect the molecular mechanisms underpinning acute versus persistent infection. We also identify gaps in the knowledge regarding LCMV regulation of antiviral immunity. Due to its unique properties, LCMV will continue to remain a vital part of the immunologists' toolbox.
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Affiliation(s)
- Tamara Suprunenko
- School of Life and Environmental Sciences, the Marie Bashir Institute for Infectious Diseases and Biosecurity, Charles Perkins Centre, and the Bosch Institute, The University of Sydney, Sydney, NSW 2006, Australia.
| | - Markus J Hofer
- School of Life and Environmental Sciences, the Marie Bashir Institute for Infectious Diseases and Biosecurity, Charles Perkins Centre, and the Bosch Institute, The University of Sydney, Sydney, NSW 2006, Australia.
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Wang B, Kang W, Zuo J, Kang W, Sun Y. The Significance of Type-I Interferons in the Pathogenesis and Therapy of Human Immunodeficiency Virus 1 Infection. Front Immunol 2017; 8:1431. [PMID: 29163506 PMCID: PMC5671973 DOI: 10.3389/fimmu.2017.01431] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2017] [Accepted: 10/13/2017] [Indexed: 01/25/2023] Open
Abstract
Type-I interferons (IFN-I) are a widely expressed family that could promote antivirus immunity in the process of pathogens invasion. In a human immunodeficiency virus 1 (HIV-1)-infected individual, the production of IFN-I can be detected as early as the acute phase and will persist throughout the course of infection. However, sustained stimulation of immune system by IFN-I also contributes greatly to host-mediated immunopathology and diseases progression. Although the protective effects of IFN-I in the acute phase of HIV-1 infection have been observed, more studies recently focus on their detrimental role in the chronic stage. Inhibition of IFN-I signaling may reverse HIV-1-induced immune hyperactivation and furthermore reduce HIV-1 reservoirs, which suggest this strategy may provide a potential way to enhance the therapeutic effect of antiretroviral therapy. Therefore, we review the role of IFN-I in HIV-1 progression, their effects on different immunocytes, and therapeutic prospects targeting the IFN-I system.
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Affiliation(s)
- Bowen Wang
- Department of Infectious Diseases, Tangdu Hospital, The Fourth Military Medical University, Xi'an, China
| | - Wen Kang
- Department of Infectious Diseases, Tangdu Hospital, The Fourth Military Medical University, Xi'an, China
| | - Jiahui Zuo
- Clinical Laboratory, Tangdu Hospital, The Fourth Military Medical University, Xi'an, China
| | - Wenzhen Kang
- Department of Infectious Diseases, Tangdu Hospital, The Fourth Military Medical University, Xi'an, China
| | - Yongtao Sun
- Department of Infectious Diseases, Tangdu Hospital, The Fourth Military Medical University, Xi'an, China
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Le Saout C, Hasley RB, Imamichi H, Tcheung L, Hu Z, Luckey MA, Park JH, Durum SK, Smith M, Rupert AW, Sneller MC, Lane HC, Catalfamo M. Chronic exposure to type-I IFN under lymphopenic conditions alters CD4 T cell homeostasis. PLoS Pathog 2014; 10:e1003976. [PMID: 24603698 PMCID: PMC3946368 DOI: 10.1371/journal.ppat.1003976] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2013] [Accepted: 01/07/2014] [Indexed: 02/05/2023] Open
Abstract
HIV infection and the associated chronic immune activation alter T cell homeostasis leading to CD4 T cell depletion and CD8 T cell expansion. The mechanisms behind these outcomes are not totally defined and only partially explained by the direct cytopathic effect of the virus. In this manuscript, we addressed the impact of lymphopenia and chronic exposure to IFN-α on T cell homeostasis. In a lymphopenic murine model, this interaction led to decreased CD4 counts and CD8 T cell expansion in association with an increase in the Signal Transducer and Activator of Transcription 1 (STAT1) levels resulting in enhanced CD4 T cell responsiveness to IFN-α. Thus, in the setting of HIV infection, chronic stimulation of this pathway could be detrimental for CD4 T cell homeostasis.
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Affiliation(s)
- Cecile Le Saout
- CMRS/Laboratory of Immunoregulation, NIAID, NIH, Bethesda, Maryland, United States of America
| | - Rebecca B. Hasley
- CMRS/Laboratory of Immunoregulation, NIAID, NIH, Bethesda, Maryland, United States of America
| | - Hiromi Imamichi
- CMRS/Laboratory of Immunoregulation, NIAID, NIH, Bethesda, Maryland, United States of America
| | - Lueng Tcheung
- CMRS/Laboratory of Immunoregulation, NIAID, NIH, Bethesda, Maryland, United States of America
| | - Zonghui Hu
- Biostatistics Research Branch, DCR, NIAID, NIH, Bethesda, Maryland, United States of America
| | - Megan A. Luckey
- Experimental Immunology Branch, CCR, NCI, NIH, Bethesda, Maryland, United States of America
| | - Jung-Hyun Park
- Experimental Immunology Branch, CCR, NCI, NIH, Bethesda, Maryland, United States of America
| | - Scott K. Durum
- Laboratory of Immunoregulation, CCR, NCI, NIH, Frederick, Maryland, United States of America
| | - Mindy Smith
- CMRS/Laboratory of Immunoregulation, NIAID, NIH, Bethesda, Maryland, United States of America
| | - Adam W. Rupert
- AIDS Monitoring Labs. Leidos Biomedical Research, Inc, Frederick, Maryland, United States of America
| | - Michael C. Sneller
- CMRS/Laboratory of Immunoregulation, NIAID, NIH, Bethesda, Maryland, United States of America
| | - H. Clifford Lane
- CMRS/Laboratory of Immunoregulation, NIAID, NIH, Bethesda, Maryland, United States of America
| | - Marta Catalfamo
- CMRS/Laboratory of Immunoregulation, NIAID, NIH, Bethesda, Maryland, United States of America
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Wang Y, Swiecki M, Cella M, Alber G, Schreiber RD, Gilfillan S, Colonna M. Timing and magnitude of type I interferon responses by distinct sensors impact CD8 T cell exhaustion and chronic viral infection. Cell Host Microbe 2012; 11:631-42. [PMID: 22704623 PMCID: PMC3572910 DOI: 10.1016/j.chom.2012.05.003] [Citation(s) in RCA: 123] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2011] [Revised: 04/13/2012] [Accepted: 05/21/2012] [Indexed: 01/06/2023]
Abstract
Type I interferon (IFN-I) promotes antiviral CD8(+)T cell responses, but the contribution of different IFN-I sources and signaling pathways are ill defined. While plasmacytoid dendritic cells (pDCs) produce IFN-I upon TLR stimulation, IFN-I is induced in most cells by helicases like MDA5. Using acute and chronic lymphocytic choriomeningitis virus (LCMV) infection models, we determined that pDCs transiently produce IFN-I that minimally impacts CD8(+)T cell responses and viral persistence. Rather, MDA5 is the key sensor that induces IFN-I required for CD8(+)T cell responses. In the absence of MDA5, CD8(+)T cell responses to acute infection rely on CD4(+)T cell help, and loss of both CD4(+)T cells and MDA5 results in CD8(+)T cell exhaustion and persistent infection. Chronic LCMV infection rapidly attenuates IFN-I responses, but early administration of exogenous IFN-I rescues CD8(+)T cells, promoting viral clearance. Thus, effective antiviral CD8(+)T cell responses depend on the timing and magnitude of IFN-I production.
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Affiliation(s)
- Yaming Wang
- Department of Pathology and Immunology, Washington University School of Medicine, 425 S. Euclid, St. Louis, MO 63110, USA
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