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Moran EA, Salas-Briceno K, Zhao W, Enya T, Aguilera AN, Acosta I, Alonzo F, Kiani D, Behnsen J, Alvarez C, Keane TM, Adams DJ, Lilue J, Ross SR. IFI207, a young and fast-evolving protein, controls retroviral replication via the STING pathway. mBio 2024:e0120924. [PMID: 38860764 DOI: 10.1128/mbio.01209-24] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2024] [Accepted: 05/03/2024] [Indexed: 06/12/2024] Open
Abstract
Mammalian AIM-2-like receptor (ALR) proteins bind nucleic acids and initiate production of type I interferons or inflammasome assembly, thereby contributing to host innate immunity. In mice, the Alr locus is highly polymorphic at the sequence and copy number level, and we show here that it is one of the most dynamic regions of the genome. One rapidly evolving gene within this region, Ifi207, was introduced to the Mus genome by gene conversion or an unequal recombination event a few million years ago. Ifi207 has a large, distinctive repeat region that differs in sequence and length among Mus species and even closely related inbred Mus musculus strains. We show that IFI207 controls murine leukemia virus (MLV) infection in vivo and that it plays a role in the STING-mediated response to cGAMP, dsDNA, DMXXA, and MLV. IFI207 binds to STING, and inclusion of its repeat region appears to stabilize STING protein. The Alr locus and Ifi207 provide a clear example of the evolutionary innovation of gene function, possibly as a result of host-pathogen co-evolution.IMPORTANCEThe Red Queen hypothesis predicts that the arms race between pathogens and the host may accelerate evolution of both sides, and therefore causes higher diversity in virulence factors and immune-related proteins, respectively . The Alr gene family in mice has undergone rapid evolution in the last few million years and includes the creation of two novel members, MndaL and Ifi207. Ifi207, in particular, became highly divergent, with significant genetic changes between highly related inbred mice. IFI207 protein acts in the STING pathway and contributes to anti-retroviral resistance via a novel mechanism. The data show that under the pressure of host-pathogen coevolution in a dynamic locus, gene conversion and recombination between gene family members creates new genes with novel and essential functions that play diverse roles in biological processes.
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Affiliation(s)
- Eileen A Moran
- Department of Microbiology and Immunology, University of Illinois at Chicago College of Medicine, Chicago, Illinois, USA
| | - Karen Salas-Briceno
- Department of Microbiology and Immunology, University of Illinois at Chicago College of Medicine, Chicago, Illinois, USA
| | - Wenming Zhao
- Department of Microbiology and Immunology, University of Illinois at Chicago College of Medicine, Chicago, Illinois, USA
| | - Takuji Enya
- Department of Microbiology and Immunology, University of Illinois at Chicago College of Medicine, Chicago, Illinois, USA
| | - Alexya N Aguilera
- Department of Microbiology and Immunology, University of Illinois at Chicago College of Medicine, Chicago, Illinois, USA
| | - Ivan Acosta
- Department of Microbiology and Immunology, University of Illinois at Chicago College of Medicine, Chicago, Illinois, USA
| | - Francis Alonzo
- Department of Microbiology and Immunology, University of Illinois at Chicago College of Medicine, Chicago, Illinois, USA
| | - Dara Kiani
- Department of Microbiology and Immunology, University of Illinois at Chicago College of Medicine, Chicago, Illinois, USA
| | - Judith Behnsen
- Department of Microbiology and Immunology, University of Illinois at Chicago College of Medicine, Chicago, Illinois, USA
| | | | - Thomas M Keane
- EMBL-EBI, Wellcome Genome Campus, Cambridge, United Kingdom
| | - David J Adams
- Wellcome Sanger Institute, Wellcome Genome Campus, Cambridge, United Kingdom
| | - Jingtao Lilue
- Gulbenkian Institute of Science, Oeiras, Portugal
- Oujiang Laboratory, Wenzhou, Zhejiang, China
| | - Susan R Ross
- Department of Microbiology and Immunology, University of Illinois at Chicago College of Medicine, Chicago, Illinois, USA
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2
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Thirugnanam S, Rout N. A Perfect Storm: The Convergence of Aging, Human Immunodeficiency Virus Infection, and Inflammasome Dysregulation. Curr Issues Mol Biol 2024; 46:4768-4786. [PMID: 38785555 PMCID: PMC11119826 DOI: 10.3390/cimb46050287] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2024] [Revised: 05/12/2024] [Accepted: 05/13/2024] [Indexed: 05/25/2024] Open
Abstract
The emergence of combination antiretroviral therapy (cART) has greatly transformed the life expectancy of people living with HIV (PWH). Today, over 76% of the individuals with HIV have access to this life-saving therapy. However, this progress has come with a new challenge: an increase in age-related non-AIDS conditions among patients with HIV. These conditions manifest earlier in PWH than in uninfected individuals, accelerating the aging process. Like PWH, the uninfected aging population experiences immunosenescence marked by an increased proinflammatory environment. This phenomenon is linked to chronic inflammation, driven in part by cellular structures called inflammasomes. Inflammatory signaling pathways activated by HIV-1 infection play a key role in inflammasome formation, suggesting a crucial link between HIV and a chronic inflammatory state. This review outlines the inflammatory processes triggered by HIV-1 infection and aging, with a focus on the inflammasomes. This review also explores current research regarding inflammasomes and potential strategies for targeting inflammasomes to mitigate inflammation. Further research on inflammasome signaling presents a unique opportunity to develop targeted interventions and innovative therapeutic modalities for combating HIV and aging-associated inflammatory processes.
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Affiliation(s)
- Siva Thirugnanam
- Division of Microbiology, Tulane National Primate Research Center, Covington, LA 70433, USA;
- Department of Microbiology and Immunology, Tulane University School of Medicine, New Orleans, LA 70112, USA
| | - Namita Rout
- Division of Microbiology, Tulane National Primate Research Center, Covington, LA 70433, USA;
- Department of Microbiology and Immunology, Tulane University School of Medicine, New Orleans, LA 70112, USA
- Tulane Center for Aging, Tulane University School of Medicine, New Orleans, LA 70112, USA
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Bottardi S, Layne T, Ramòn AC, Quansah N, Wurtele H, Affar EB, Milot E. MNDA, a PYHIN factor involved in transcriptional regulation and apoptosis control in leukocytes. Front Immunol 2024; 15:1395035. [PMID: 38680493 PMCID: PMC11045911 DOI: 10.3389/fimmu.2024.1395035] [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: 03/02/2024] [Accepted: 04/02/2024] [Indexed: 05/01/2024] Open
Abstract
Inflammation control is critical during the innate immune response. Such response is triggered by the detection of molecules originating from pathogens or damaged host cells by pattern-recognition receptors (PRRs). PRRs subsequently initiate intra-cellular signalling through different pathways, resulting in i) the production of inflammatory cytokines, including type I interferon (IFN), and ii) the initiation of a cascade of events that promote both immediate host responses as well as adaptive immune responses. All human PYRIN and HIN-200 domains (PYHIN) protein family members were initially proposed to be PRRs, although this view has been challenged by reports that revealed their impact on other cellular mechanisms. Of relevance here, the human PYHIN factor myeloid nuclear differentiation antigen (MNDA) has recently been shown to directly control the transcription of genes encoding factors that regulate programmed cell death and inflammation. While MNDA is mainly found in the nucleus of leukocytes of both myeloid (neutrophils and monocytes) and lymphoid (B-cell) origin, its subcellular localization has been shown to be modulated in response to genotoxic agents that induce apoptosis and by bacterial constituents, mediators of inflammation. Prior studies have noted the importance of MNDA as a marker for certain forms of lymphoma, and as a clinical prognostic factor for hematopoietic diseases characterized by defective regulation of apoptosis. Abnormal expression of MNDA has also been associated with altered levels of cytokines and other inflammatory mediators. Refining our comprehension of the regulatory mechanisms governing the expression of MNDA and other PYHIN proteins, as well as enhancing our definition of their molecular functions, could significantly influence the management and treatment strategies of numerous human diseases. Here, we review the current state of knowledge regarding PYHIN proteins and their role in innate and adaptive immune responses. Emphasis will be placed on the regulation, function, and relevance of MNDA expression in the control of gene transcription and RNA stability during cell death and inflammation.
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Affiliation(s)
- Stefania Bottardi
- Maisonneuve-Rosemont Hospital Research Centre, University of Montreal, Centre Intégré Universitaire de Santé et de Services Sociaux (CIUSSS) de l’Est-de-l’Île de Montreal, Montreal, QC, Canada
| | - Taylorjade Layne
- Maisonneuve-Rosemont Hospital Research Centre, University of Montreal, Centre Intégré Universitaire de Santé et de Services Sociaux (CIUSSS) de l’Est-de-l’Île de Montreal, Montreal, QC, Canada
| | - Ailyn C. Ramòn
- Maisonneuve-Rosemont Hospital Research Centre, University of Montreal, Centre Intégré Universitaire de Santé et de Services Sociaux (CIUSSS) de l’Est-de-l’Île de Montreal, Montreal, QC, Canada
- Department of Medicine, Université de Montréal, Montréal, QC, Canada
| | - Norreen Quansah
- Maisonneuve-Rosemont Hospital Research Centre, University of Montreal, Centre Intégré Universitaire de Santé et de Services Sociaux (CIUSSS) de l’Est-de-l’Île de Montreal, Montreal, QC, Canada
- Department of Medicine, Université de Montréal, Montréal, QC, Canada
| | - Hugo Wurtele
- Maisonneuve-Rosemont Hospital Research Centre, University of Montreal, Centre Intégré Universitaire de Santé et de Services Sociaux (CIUSSS) de l’Est-de-l’Île de Montreal, Montreal, QC, Canada
- Department of Medicine, Université de Montréal, Montréal, QC, Canada
| | - El Bachir Affar
- Maisonneuve-Rosemont Hospital Research Centre, University of Montreal, Centre Intégré Universitaire de Santé et de Services Sociaux (CIUSSS) de l’Est-de-l’Île de Montreal, Montreal, QC, Canada
- Department of Medicine, Université de Montréal, Montréal, QC, Canada
| | - Eric Milot
- Maisonneuve-Rosemont Hospital Research Centre, University of Montreal, Centre Intégré Universitaire de Santé et de Services Sociaux (CIUSSS) de l’Est-de-l’Île de Montreal, Montreal, QC, Canada
- Department of Medicine, Université de Montréal, Montréal, QC, Canada
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Erdemci-Evin S, Bosso M, Krchlikova V, Bayer W, Regensburger K, Mayer M, Dittmer U, Sauter D, Kmiec D, Kirchhoff F. A Variety of Mouse PYHIN Proteins Restrict Murine and Human Retroviruses. Viruses 2024; 16:493. [PMID: 38675836 PMCID: PMC11054388 DOI: 10.3390/v16040493] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2024] [Revised: 03/15/2024] [Accepted: 03/21/2024] [Indexed: 04/28/2024] Open
Abstract
PYHIN proteins are only found in mammals and play key roles in the defense against bacterial and viral pathogens. The corresponding gene locus shows variable deletion and expansion ranging from 0 genes in bats, over 1 in cows, and 4 in humans to a maximum of 13 in mice. While initially thought to act as cytosolic immune sensors that recognize foreign DNA, increasing evidence suggests that PYHIN proteins also inhibit viral pathogens by more direct mechanisms. Here, we examined the ability of all 13 murine PYHIN proteins to inhibit HIV-1 and murine leukemia virus (MLV). We show that overexpression of p203, p204, p205, p208, p209, p210, p211, and p212 strongly inhibits production of infectious HIV-1; p202, p207, and p213 had no significant effects, while p206 and p214 showed intermediate phenotypes. The inhibitory effects on infectious HIV-1 production correlated significantly with the suppression of reporter gene expression by a proviral Moloney MLV-eGFP construct and HIV-1 and Friend MLV LTR luciferase reporter constructs. Altogether, our data show that the antiretroviral activity of PYHIN proteins is conserved between men and mice and further support the key role of nuclear PYHIN proteins in innate antiviral immunity.
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Affiliation(s)
- Sümeyye Erdemci-Evin
- Institute of Molecular Virology, Ulm University Medical Center, 89081 Ulm, Germany; (S.E.-E.); (M.B.); (K.R.); (M.M.); (D.K.)
| | - Matteo Bosso
- Institute of Molecular Virology, Ulm University Medical Center, 89081 Ulm, Germany; (S.E.-E.); (M.B.); (K.R.); (M.M.); (D.K.)
| | - Veronika Krchlikova
- Institute for Medical Virology and Epidemiology of Viral Diseases, University Hospital Tübingen, 72076 Tübingen, Germany; (V.K.)
| | - Wibke Bayer
- Institute for Virology, University Hospital Essen, University of Duisburg-Essen, 45147 Essen, Germany; (W.B.); (U.D.)
| | - Kerstin Regensburger
- Institute of Molecular Virology, Ulm University Medical Center, 89081 Ulm, Germany; (S.E.-E.); (M.B.); (K.R.); (M.M.); (D.K.)
| | - Martha Mayer
- Institute of Molecular Virology, Ulm University Medical Center, 89081 Ulm, Germany; (S.E.-E.); (M.B.); (K.R.); (M.M.); (D.K.)
| | - Ulf Dittmer
- Institute for Virology, University Hospital Essen, University of Duisburg-Essen, 45147 Essen, Germany; (W.B.); (U.D.)
| | - Daniel Sauter
- Institute for Medical Virology and Epidemiology of Viral Diseases, University Hospital Tübingen, 72076 Tübingen, Germany; (V.K.)
| | - Dorota Kmiec
- Institute of Molecular Virology, Ulm University Medical Center, 89081 Ulm, Germany; (S.E.-E.); (M.B.); (K.R.); (M.M.); (D.K.)
| | - Frank Kirchhoff
- Institute of Molecular Virology, Ulm University Medical Center, 89081 Ulm, Germany; (S.E.-E.); (M.B.); (K.R.); (M.M.); (D.K.)
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Rana C, Rajput S, Behera M, Gautam D, Vikas V, Vats A, Roshan M, Ghorai SM, De S. Global epidemiology of CTX-M-type β-lactam resistance in human and animal. Comp Immunol Microbiol Infect Dis 2022; 86:101815. [DOI: 10.1016/j.cimid.2022.101815] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2022] [Revised: 04/05/2022] [Accepted: 04/12/2022] [Indexed: 11/30/2022]
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Narh CA. Genomic Cues From Beta-Coronaviruses and Mammalian Hosts Sheds Light on Probable Origins and Infectivity of SARS-CoV-2 Causing COVID-19. Front Genet 2020; 11:902. [PMID: 33110415 PMCID: PMC7489052 DOI: 10.3389/fgene.2020.00902] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2020] [Accepted: 07/21/2020] [Indexed: 12/29/2022] Open
Affiliation(s)
- Charles A Narh
- Life Sciences, Burnet Institute for Medical Research, Melbourne, VIC, Australia.,Department of Medicine, University of Melbourne, Melbourne, VIC, Australia.,Department of Infectious Diseases, Monash University, Melbourne, VIC, Australia
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