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Rogers KJ, Shtanko O, Stunz LL, Mallinger LN, Arkee T, Schmidt ME, Bohan D, Brunton B, White JM, Varga SM, Butler NS, Bishop GA, Maury W. Frontline Science: CD40 signaling restricts RNA virus replication in Mϕs, leading to rapid innate immune control of acute virus infection. J Leukoc Biol 2021; 109:309-325. [PMID: 32441445 PMCID: PMC7774454 DOI: 10.1002/jlb.4hi0420-285rr] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2019] [Revised: 04/07/2020] [Accepted: 04/08/2020] [Indexed: 01/03/2023] Open
Abstract
Many acute viral infections target tissue Mϕs, yet the mechanisms of Mϕ-mediated control of viruses are poorly understood. Here, we report that CD40 expressed by peritoneal Mϕs restricts early infection of a broad range of RNA viruses. Loss of CD40 expression enhanced virus replication as early as 12-24 h of infection and, conversely, stimulation of CD40 signaling with an agonistic Ab blocked infection. With peritoneal cell populations infected with the filovirus, wild-type (WT) Ebola virus (EBOV), or a BSL2 model virus, recombinant vesicular stomatitis virus encoding Ebola virus glycoprotein (rVSV/EBOV GP), we examined the mechanism conferring protection. Here, we demonstrate that restricted virus replication in Mϕs required CD154/CD40 interactions that stimulated IL-12 production through TRAF6-dependent signaling. In turn, IL-12 production resulted in IFN-γ production, which induced proinflammatory polarization of Mϕs, protecting the cells from infection. These CD40-dependent events protected mice against virus challenge. CD40-/- mice were exquisitely sensitive to intraperitoneal challenge with a dose of rVSV/EBOV GP that was sublethal to CD40+/+ mice, exhibiting viremia within 12 h of infection and rapidly succumbing to infection. This study identifies a previously unappreciated role for Mϕ-intrinsic CD40 signaling in controlling acute virus infection.
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Affiliation(s)
- Kai J. Rogers
- Department of Microbiology and Immunology, University of Iowa, Iowa City, IA, United States
| | - Olena Shtanko
- Host-Pathogen Interactions, Texas Biomedical Research Institute, San Antonio, TX, United States
| | - Laura L. Stunz
- Department of Microbiology and Immunology, University of Iowa, Iowa City, IA, United States
| | - Laura N. Mallinger
- Department of Microbiology and Immunology, University of Iowa, Iowa City, IA, United States
| | - Tina Arkee
- Interdisciplinary Graduate Program in Immunology, University of Iowa, Iowa City, IA, United States
| | - Megan E. Schmidt
- Interdisciplinary Graduate Program in Immunology, University of Iowa, Iowa City, IA, United States
| | - Dana Bohan
- Interdisciplinary Graduate Program in Immunology, University of Iowa, Iowa City, IA, United States
| | - Bethany Brunton
- Department of Microbiology and Immunology, University of Iowa, Iowa City, IA, United States
| | - Judith M. White
- Department of Cell Biology, University of Virginia, Charlottesville, VA, United States
| | - Steve M. Varga
- Department of Microbiology and Immunology, University of Iowa, Iowa City, IA, United States
- Interdisciplinary Graduate Program in Immunology, University of Iowa, Iowa City, IA, United States
| | - Noah S. Butler
- Department of Microbiology and Immunology, University of Iowa, Iowa City, IA, United States
- Interdisciplinary Graduate Program in Immunology, University of Iowa, Iowa City, IA, United States
| | - Gail A. Bishop
- Department of Microbiology and Immunology, University of Iowa, Iowa City, IA, United States
- Interdisciplinary Graduate Program in Immunology, University of Iowa, Iowa City, IA, United States
- Department of Internal Medicine, University of Iowa, Iowa City, IA, United States
- Iowa City VA Health Care System, Iowa City, Iowa City, IA, United States
| | - Wendy Maury
- Department of Microbiology and Immunology, University of Iowa, Iowa City, IA, United States
- Interdisciplinary Graduate Program in Immunology, University of Iowa, Iowa City, IA, United States
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Rogers KJ, Shtanko O, Vijay R, Mallinger LN, Joyner CJ, Galinski MR, Butler NS, Maury W. Acute Plasmodium Infection Promotes Interferon-Gamma-Dependent Resistance to Ebola Virus Infection. Cell Rep 2020; 30:4041-4051.e4. [PMID: 32209467 PMCID: PMC7172281 DOI: 10.1016/j.celrep.2020.02.104] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2019] [Revised: 01/06/2020] [Accepted: 02/27/2020] [Indexed: 10/24/2022] Open
Abstract
During the 2013-2016 Ebola virus (EBOV) epidemic, a significant number of patients admitted to Ebola treatment units were co-infected with Plasmodium falciparum, a predominant agent of malaria. However, there is no consensus on how malaria impacts EBOV infection. The effect of acute Plasmodium infection on EBOV challenge was investigated using mouse-adapted EBOV and a biosafety level 2 (BSL-2) model virus. We demonstrate that acute Plasmodium infection protects from lethal viral challenge, dependent upon interferon gamma (IFN-γ) elicited as a result of parasite infection. Plasmodium-infected mice lacking the IFN-γ receptor are not protected. Ex vivo incubation of naive human or mouse macrophages with sera from acutely parasitemic rodents or macaques programs a proinflammatory phenotype dependent on IFN-γ and renders cells resistant to EBOV infection. We conclude that acute Plasmodium infection can safeguard against EBOV by the production of protective IFN-γ. These findings have implications for anti-malaria therapies administered during episodic EBOV outbreaks in Africa.
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Affiliation(s)
- Kai J Rogers
- Department of Microbiology and Immunology, University of Iowa, Iowa City, IA 52242, USA
| | - Olena Shtanko
- Host-Pathogen Interactions, Texas Biomedical Research Institute, San Antonio, TX 78227, USA
| | - Rahul Vijay
- Department of Microbiology and Immunology, University of Iowa, Iowa City, IA 52242, USA
| | - Laura N Mallinger
- Department of Microbiology and Immunology, University of Iowa, Iowa City, IA 52242, USA
| | - Chester J Joyner
- Division of Pulmonary, Allergy, Critical Care & Sleep Medicine, Department of Medicine, Emory University, Atlanta, GA 30322, USA; Malaria Host-Pathogen Interaction Center, Emory Vaccine Center, Yerkes National Primate Center, Emory University, Atlanta, GA 30322, USA
| | - Mary R Galinski
- Malaria Host-Pathogen Interaction Center, Emory Vaccine Center, Yerkes National Primate Center, Emory University, Atlanta, GA 30322, USA; Division of Infectious Diseases, Department of Medicine, Emory University School of Medicine, Atlanta, GA, USA
| | - Noah S Butler
- Department of Microbiology and Immunology, University of Iowa, Iowa City, IA 52242, USA; Interdisciplinary Graduate Program in Immunology, University of Iowa, Iowa City, IA 52242, USA
| | - Wendy Maury
- Department of Microbiology and Immunology, University of Iowa, Iowa City, IA 52242, USA; Interdisciplinary Graduate Program in Immunology, University of Iowa, Iowa City, IA 52242, USA.
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