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Peter AS, Hoffmann DS, Klier J, Lange CM, Moeller J, Most V, Wüst CK, Beining M, Gülesen S, Junker H, Brumme B, Schiffner T, Meiler J, Schoeder CT. Strategies of rational and structure-driven vaccine design for Arenaviruses. INFECTION, GENETICS AND EVOLUTION : JOURNAL OF MOLECULAR EPIDEMIOLOGY AND EVOLUTIONARY GENETICS IN INFECTIOUS DISEASES 2024; 123:105626. [PMID: 38908736 DOI: 10.1016/j.meegid.2024.105626] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/21/2024] [Revised: 04/16/2024] [Accepted: 06/18/2024] [Indexed: 06/24/2024]
Abstract
The COVID-19 outbreak has highlighted the importance of pandemic preparedness for the prevention of future health crises. One virus family with high pandemic potential are Arenaviruses, which have been detected almost worldwide, particularly in Africa and the Americas. These viruses are highly understudied and many questions regarding their structure, replication and tropism remain unanswered, making the design of an efficacious and molecularly-defined vaccine challenging. We propose that structure-driven computational vaccine design will contribute to overcome these challenges. Computational methods for stabilization of viral glycoproteins or epitope focusing have made progress during the last decades and particularly during the COVID-19 pandemic, and have proven useful for rational vaccine design and the establishment of novel diagnostic tools. In this review, we summarize gaps in our understanding of Arenavirus molecular biology, highlight challenges in vaccine design and discuss how structure-driven and computationally informed strategies will aid in overcoming these obstacles.
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Affiliation(s)
- Antonia Sophia Peter
- Institute for Drug Discovery, Leipzig University, Faculty of Medicine, Leipzig, Germany
| | - Dieter S Hoffmann
- Institute for Drug Discovery, Leipzig University, Faculty of Medicine, Leipzig, Germany
| | - Johannes Klier
- Institute for Drug Discovery, Leipzig University, Faculty of Medicine, Leipzig, Germany
| | - Christina M Lange
- Institute for Drug Discovery, Leipzig University, Faculty of Medicine, Leipzig, Germany
| | - Johanna Moeller
- Institute for Drug Discovery, Leipzig University, Faculty of Medicine, Leipzig, Germany; Center for Scalable Data Analytics and Artificial Intelligence ScaDS.AI, Dresden/Leipzig, Germany
| | - Victoria Most
- Institute for Drug Discovery, Leipzig University, Faculty of Medicine, Leipzig, Germany
| | - Christina K Wüst
- Institute for Drug Discovery, Leipzig University, Faculty of Medicine, Leipzig, Germany; Molecular Medicine Studies, Faculty for Biology and Preclinical Medicine, University of Regensburg, Regensburg, Germany
| | - Max Beining
- Institute for Drug Discovery, Leipzig University, Faculty of Medicine, Leipzig, Germany; SECAI, School of Embedded Composite Artificial Intelligence, Dresden/Leipzig, Germany
| | - Sevilay Gülesen
- Institute for Drug Discovery, Leipzig University, Faculty of Medicine, Leipzig, Germany
| | - Hannes Junker
- Institute for Drug Discovery, Leipzig University, Faculty of Medicine, Leipzig, Germany
| | - Birke Brumme
- Institute for Drug Discovery, Leipzig University, Faculty of Medicine, Leipzig, Germany
| | - Torben Schiffner
- Institute for Drug Discovery, Leipzig University, Faculty of Medicine, Leipzig, Germany; The Scripps Research Institute, Department for Immunology and Microbiology, La Jolla, CA, United States
| | - Jens Meiler
- Institute for Drug Discovery, Leipzig University, Faculty of Medicine, Leipzig, Germany; Center for Scalable Data Analytics and Artificial Intelligence ScaDS.AI, Dresden/Leipzig, Germany; Department of Chemistry, Vanderbilt University, Nashville, TN, United States; Center for Structural Biology, Vanderbilt University, Nashville, TN, United States
| | - Clara T Schoeder
- Institute for Drug Discovery, Leipzig University, Faculty of Medicine, Leipzig, Germany; Center for Scalable Data Analytics and Artificial Intelligence ScaDS.AI, Dresden/Leipzig, Germany.
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Golden JW, Kwilas SA, Hooper JW. Glycoprotein-Specific Polyclonal Antibodies Targeting Machupo Virus Protect Guinea Pigs against Lethal Infection. Vaccines (Basel) 2024; 12:674. [PMID: 38932403 PMCID: PMC11209097 DOI: 10.3390/vaccines12060674] [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: 05/13/2024] [Revised: 06/07/2024] [Accepted: 06/11/2024] [Indexed: 06/28/2024] Open
Abstract
Convalescent plasma has been shown to be effective at protecting humans against severe diseases caused by New World (NW) arenaviruses, including Junin virus (JUNV) and Machupo virus (MACV). This plasma contains antibodies against the full complement of structural proteins including the nucleocapsid and envelope glycoproteins (GPcs) consisting of GP1 and GP2. To gain insights into the protective and cross-protective properties of anti-GPc-specific polyclonal antibodies, we evaluated the ability of a DNA vaccine-produced anti-GPc rabbit antisera targeting MACV strain Carvallo to provide heterologous protection against another MACV strain termed Chicava in the Hartley guinea pig model. The neutralizing activity of the rabbit antisera against the heterologous MACV strains Chicava and Mallale was found to be 54-fold and 23-fold lower, respectively, compared to the titer against the homologous MACV strain Carvallo in the PRNT50 assay. Despite lower neutralizing activity against the strain Chicava, the rabbit antisera protected 100% of the guinea pigs from this strain when administered up to four days post-infection, whereas all the control animals succumbed to the disease. Using vesicular stomatitis virus (VSV) particles pseudotyped with MACV GPc, we identified a single amino acid difference at position 122 between the strains Chicava and Carvallo GPc that significantly influenced the neutralization activity of the rabbit antisera. These findings indicate that polyclonal antibodies targeting the MACV glycoproteins can protect against lethal infection in a post-challenge setting. These data will help guide future antibody-based therapeutics development against NW arenaviruses.
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Affiliation(s)
| | | | - Jay W. Hooper
- Department of Molecular Virology, Virology Division, United States Army Medical Research Institute of Infectious Diseases, Fort Detrick, MD 21702, USA; (J.W.G.); (S.A.K.)
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3
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Zhang Z, Takenaga T, Fehling SK, Igarashi M, Hirokawa T, Muramoto Y, Yamauchi K, Onishi C, Nakano M, Urata S, Groseth A, Strecker T, Noda T. Hexestrol, an estrogen receptor agonist, inhibits Lassa virus entry. J Virol 2024:e0071424. [PMID: 38809021 DOI: 10.1128/jvi.00714-24] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2024] [Accepted: 05/03/2024] [Indexed: 05/30/2024] Open
Abstract
Lassa virus (LASV) is the causative agent of human Lassa fever which in severe cases manifests as hemorrhagic fever leading to thousands of deaths annually. However, no approved vaccines or antiviral drugs are currently available. Recently, we screened approximately 2,500 compounds using a recombinant vesicular stomatitis virus (VSV) expressing LASV glycoprotein GP (VSV-LASVGP) and identified a P-glycoprotein inhibitor as a potential LASV entry inhibitor. Here, we show that another identified candidate, hexestrol (HES), an estrogen receptor agonist, is also a LASV entry inhibitor. HES inhibited VSV-LASVGP replication with a 50% inhibitory concentration (IC50) of 0.63 µM. Importantly, HES also inhibited authentic LASV replication with IC50 values of 0.31 µM-0.61 µM. Time-of-addition and cell-based membrane fusion assays suggested that HES inhibits the membrane fusion step during virus entry. Alternative estrogen receptor agonists did not inhibit VSV-LASVGP replication, suggesting that the estrogen receptor itself is unlikely to be involved in the antiviral activity of HES. Generation of a HES-resistant mutant revealed that the phenylalanine at amino acid position 446 (F446) of LASVGP, which is located in the transmembrane region, conferred resistance to HES. Although mutation of F446 enhanced the membrane fusion activity of LASVGP, it exhibited reduced VSV-LASVGP replication, most likely due to the instability of the pre-fusion state of LASVGP. Collectively, our results demonstrated that HES is a promising anti-LASV drug that acts by inhibiting the membrane fusion step of LASV entry. This study also highlights the importance of the LASVGP transmembrane region as a target for anti-LASV drugs.IMPORTANCELassa virus (LASV), the causative agent of Lassa fever, is the most devastating mammarenavirus with respect to its impact on public health in West Africa. However, no approved antiviral drugs or vaccines are currently available. Here, we identified hexestrol (HES), an estrogen receptor agonist, as the potential antiviral candidate drug. We showed that the estrogen receptor itself is not involved in the antiviral activity. HES directly bound to LASVGP and blocked membrane fusion, thereby inhibiting LASV infection. Through the generation of a HES-resistant virus, we found that phenylalanine at position 446 (F446) within the LASVGP transmembrane region plays a crucial role in the antiviral activity of HES. The mutation at F446 caused reduced virus replication, likely due to the instability of the pre-fusion state of LASVGP. These findings highlight the potential of HES as a promising candidate for the development of antiviral compounds targeting LASV.
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Affiliation(s)
- Zihan Zhang
- Laboratory of Ultrastructural Virology, Institute for Life and Medical Sciences, Kyoto University, Kyoto, Japan
- Laboratory of Ultrastructural Virology, Graduate School of Biostudies, Kyoto University, Kyoto, Japan
- CREST, Japan Science and Technology Agency, Kawaguchi, Saitama, Japan
| | - Toru Takenaga
- Laboratory of Ultrastructural Virology, Institute for Life and Medical Sciences, Kyoto University, Kyoto, Japan
- Laboratory of Ultrastructural Virology, Graduate School of Biostudies, Kyoto University, Kyoto, Japan
- CREST, Japan Science and Technology Agency, Kawaguchi, Saitama, Japan
| | | | - Manabu Igarashi
- Division of Global Epidemiology, International Institute for Zoonosis Control, Hokkaido University, Sapporo, Japan
- International Collaboration Unit, International Institute for Zoonosis Control, Hokkaido University, Sapporo, Japan
| | - Takatsugu Hirokawa
- Transborder Medical Research Center, University of Tsukuba, Tsukuba, Ibaraki, Japan
- Division of Biomedical Science, Faculty of Medicine, University of Tsukuba, Tsukuba, Ibaraki, Japan
| | - Yukiko Muramoto
- Laboratory of Ultrastructural Virology, Institute for Life and Medical Sciences, Kyoto University, Kyoto, Japan
- Laboratory of Ultrastructural Virology, Graduate School of Biostudies, Kyoto University, Kyoto, Japan
- CREST, Japan Science and Technology Agency, Kawaguchi, Saitama, Japan
| | - Koji Yamauchi
- Laboratory of Ultrastructural Virology, Institute for Life and Medical Sciences, Kyoto University, Kyoto, Japan
- Laboratory of Ultrastructural Virology, Graduate School of Biostudies, Kyoto University, Kyoto, Japan
- CREST, Japan Science and Technology Agency, Kawaguchi, Saitama, Japan
| | - Chiho Onishi
- Laboratory of Ultrastructural Virology, Institute for Life and Medical Sciences, Kyoto University, Kyoto, Japan
- Laboratory of Ultrastructural Virology, Graduate School of Biostudies, Kyoto University, Kyoto, Japan
- CREST, Japan Science and Technology Agency, Kawaguchi, Saitama, Japan
| | - Masahiro Nakano
- Laboratory of Ultrastructural Virology, Institute for Life and Medical Sciences, Kyoto University, Kyoto, Japan
- Laboratory of Ultrastructural Virology, Graduate School of Biostudies, Kyoto University, Kyoto, Japan
- CREST, Japan Science and Technology Agency, Kawaguchi, Saitama, Japan
| | - Shuzo Urata
- National Research Center for the Control and Prevention of Infectious Diseases (CCPID), Nagasaki University, Nagasaki, Japan
| | - Allison Groseth
- Laboratory for Arenavirus Biology, Institute of Molecular Virology and Cell Biology, Friedrich-Loeffler-Institut, Greifswald-Insel Riems, Germany
| | - Thomas Strecker
- Institute of Virology, Phillips University Marburg, Marburg, Germany
| | - Takeshi Noda
- Laboratory of Ultrastructural Virology, Institute for Life and Medical Sciences, Kyoto University, Kyoto, Japan
- Laboratory of Ultrastructural Virology, Graduate School of Biostudies, Kyoto University, Kyoto, Japan
- CREST, Japan Science and Technology Agency, Kawaguchi, Saitama, Japan
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Zhao X, Zhang Y, Luo B. Ferroptosis, from the virus point of view: opportunities and challenges. Crit Rev Microbiol 2024:1-18. [PMID: 38588443 DOI: 10.1080/1040841x.2024.2340643] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2023] [Accepted: 04/01/2024] [Indexed: 04/10/2024]
Abstract
Ferroptosis is a new type of cell death, which is mainly dependent on the formation and accumulation of reactive oxygen species and lipid peroxides mediated by iron. It is distinct from other forms of regulation of cell death in morphology, immunology, biochemistry, and molecular biology. Various cell death mechanisms have been observed in many viral infections, and virus-induced cell death has long been considered as a double-edged sword that can inhibit or aggravate viral infections. However, understanding of the role of ferroptosis in various viral infections is limited. Special attention will be paid to the mechanisms of ferroptosis in mediating viral infection and antiviral treatment associated with ferroptosis. In this paper, we outlined the mechanism of ferroptosis. Additionally, this paper also review research on ferroptosis from the perspective of the virus, discussed the research status of ferroptosis in virus infection and classified and summarized research on the interaction between viral infections and ferroptosis.
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Affiliation(s)
- Xia Zhao
- Department of Pathogenic Biology, School of Basic Medicine, Qingdao University, Qingdao, China
| | - Yan Zhang
- Department of Pathogenic Biology, School of Basic Medicine, Qingdao University, Qingdao, China
- Department of Clinical Laboratory, Zibo Central Hospital, Zibo, China
| | - Bing Luo
- Department of Pathogenic Biology, School of Basic Medicine, Qingdao University, Qingdao, China
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5
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Iyer K, Yan Z, Ross SR. Entry inhibitors as arenavirus antivirals. Front Microbiol 2024; 15:1382953. [PMID: 38650890 PMCID: PMC11033450 DOI: 10.3389/fmicb.2024.1382953] [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: 02/06/2024] [Accepted: 03/25/2024] [Indexed: 04/25/2024] Open
Abstract
Arenaviruses belonging to the Arenaviridae family, genus mammarenavirus, are enveloped, single-stranded RNA viruses primarily found in rodent species, that cause severe hemorrhagic fever in humans. With high mortality rates and limited treatment options, the search for effective antivirals is imperative. Current treatments, notably ribavirin and other nucleoside inhibitors, are only partially effective and have significant side effects. The high lethality and lack of treatment, coupled with the absence of vaccines for all but Junín virus, has led to the classification of these viruses as Category A pathogens by the Centers for Disease Control (CDC). This review focuses on entry inhibitors as potential therapeutics against mammarenaviruses, which include both New World and Old World arenaviruses. Various entry inhibition strategies, including small molecule inhibitors and neutralizing antibodies, have been explored through high throughput screening, genome-wide studies, and drug repurposing. Notable progress has been made in identifying molecules that target receptor binding, internalization, or fusion steps. Despite promising preclinical results, the translation of entry inhibitors to approved human therapeutics has faced challenges. Many have only been tested in in vitro or animal models, and a number of candidates showed efficacy only against specific arenaviruses, limiting their broader applicability. The widespread existence of arenaviruses in various rodent species and their potential for their zoonotic transmission also underscores the need for rapid development and deployment of successful pan-arenavirus therapeutics. The diverse pool of candidate molecules in the pipeline provides hope for the eventual discovery of a broadly effective arenavirus antiviral.
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Affiliation(s)
| | | | - Susan R. Ross
- Department of Microbiology and Immunology, University of Illinois, College of Medicine, Chicago, IL, United States
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6
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Guevara-Vega M, Andrade BS, Palmeira LS, Bernardino SS, Taveira EB, Cardoso-Sousa L, Caixeta DC, Cunha TM, Goulart LR, Jardim ACG, Sabino-Silva R. Chapare virus infection and current perspectives on dentistry. Clin Oral Investig 2024; 28:238. [PMID: 38568249 DOI: 10.1007/s00784-023-05399-z] [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: 08/14/2023] [Accepted: 12/04/2023] [Indexed: 04/05/2024]
Abstract
OBJECTIVES This narrative review addresses relevant points about Chapare virus (CHAV) entry in oral cells, CHAV transmission, and preventive strategies in dental clinical settings. It is critical in dentistry due to the frequent presence of gingival hemorrhage occurred in CHAV-infected patients. MATERIALS AND METHODS Studies related to CHAV were searched in MEDLINE/PubMed, Scopus, EMBASE, and Web-of-Science databases without language restriction or year of publication. RESULTS Recently, the PAHO/WHO and CDC indicate a presence of human-to-human transmission of CHAV associated with direct contact with saliva, blood, or urine, and also through droplets or aerosols created in healthcare procedures. CHAV was detected in human oropharyngeal saliva and gingival bleeding was confirmed in all cases of CHAV hemorrhagic fever, including evidence of nosocomial CHAV transmission in healthcare workers. We revisited the human transferrin receptor 1 (TfR1) expression in oral, nasal, and salivary glands tissues, as well as, we firstly identified the critical residues in the pre-glycoprotein (GP) complex of CHAV that interacts with human TfR1 using cutting-edge in silico bioinformatics platforms associated with molecular dynamic analysis. CONCLUSIONS In this multidisciplinary view, we also point out critical elements to provide perspectives on the preventive strategies for dentists and frontline healthcare workers against CHAV, and in the implementation of salivary diagnostic platforms for virus detection, which can be critical to an urgent plan to prevent human-to-human transmission based on current evidence. CLINICAL RELEVANCE The preventive strategies in dental clinical settings are pivotal due to the aerosol-generating procedures in dentistry with infected patients or suspected cases of CHAV infection.
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Affiliation(s)
- Marco Guevara-Vega
- Innovation Center in Salivary Diagnostics and Nanobiotechnology, Department of Physiology, Institute of Biomedical Sciences, Federal University of Uberlandia, Uberlandia, Minas Gerais, Brazil
- Biomedical Research Group, University of Sucre, Sincelejo, Colombia
| | - Bruno Silva Andrade
- Laboratory of Bioinformatics and Computational Chemistry, Department of Biological Sciences, State University of Southwest of Bahia (UESB), Jequié, Bahia, Brazil.
| | - Lucas Sousa Palmeira
- Laboratory of Bioinformatics and Computational Chemistry, Department of Biological Sciences, State University of Southwest of Bahia (UESB), Jequié, Bahia, Brazil
| | - Sttephany Silva Bernardino
- Innovation Center in Salivary Diagnostics and Nanobiotechnology, Department of Physiology, Institute of Biomedical Sciences, Federal University of Uberlandia, Uberlandia, Minas Gerais, Brazil
| | - Elisa Borges Taveira
- Innovation Center in Salivary Diagnostics and Nanobiotechnology, Department of Physiology, Institute of Biomedical Sciences, Federal University of Uberlandia, Uberlandia, Minas Gerais, Brazil
| | - Leia Cardoso-Sousa
- Innovation Center in Salivary Diagnostics and Nanobiotechnology, Department of Physiology, Institute of Biomedical Sciences, Federal University of Uberlandia, Uberlandia, Minas Gerais, Brazil
| | - Douglas C Caixeta
- Innovation Center in Salivary Diagnostics and Nanobiotechnology, Department of Physiology, Institute of Biomedical Sciences, Federal University of Uberlandia, Uberlandia, Minas Gerais, Brazil
| | - Thulio M Cunha
- Department of Pulmonology, School of Medicine, Federal University of Uberlandia, Uberlandia, Minas Gerais, Brazil
| | - Luiz R Goulart
- Institute of Biotechnology, Federal University of Uberlandia, Uberlandia, Minas Gerais, Brazil
| | - Ana Carolina Gomes Jardim
- Laboratory of Antiviral Research, Institute of Biomedical Sciences, Federal University of Uberlandia, Uberlandia, Minas Gerais, Brazil
| | - Robinson Sabino-Silva
- Innovation Center in Salivary Diagnostics and Nanobiotechnology, Department of Physiology, Institute of Biomedical Sciences, Federal University of Uberlandia, Uberlandia, Minas Gerais, Brazil.
- Innovation Center in Salivary Diagnostic and Nanotheranostics, Institute of Biomedical Sciences (ICBIM), Federal University of Uberlandia (UFU), Av. Pará, 1720, Campus Umuarama, Uberlandia, MG, CEP 38400-902, Brazil.
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7
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Chiappelli F. CD71: Role in permafrost immunity. Bioinformation 2024; 20:208-211. [PMID: 38711995 PMCID: PMC11069603 DOI: 10.6026/973206300200208] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2024] [Revised: 03/31/2024] [Accepted: 03/31/2024] [Indexed: 05/08/2024] Open
Abstract
Iron, an essential constituent of cell metabolism, is transported intra-cellularly bound to the ubiquitous 76 kDa blood glycoprotein transferrin via the transferrin receptor, CD71. Because of its structure, CD71 facilitates the binding and penetration of a large variety of viruses into the host. Among which the hemorrhagic fever-causing New World mammarena viruses (family of single stranded ambisense segmented RNA Arenaviridae), the single stranded positive sense RNA hepatitis C virus, the single stranded negative sense segmented influenza A virus, the single stranded negative sense RNA rabies virus, the single stranded positive sense SARS-CoV2 and possibly many others. In this process, CD71 is associated with the target of the anti-proliferative antibody-1 (CD81) viral co-receptor. In light of the plethora of novel and ancient viruses and microbes emerging from melting eternal glacier ice and permafrost, it is timely and critical to define and characterize interventions, besides the soluble form of CD71 (sCD71), that can abrogate or minimize this novice non-canonical function of CD71.
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Affiliation(s)
- Francesco Chiappelli
- Dental Group of Sherman Oaks, Sherman Oaks, CA 91403, USA
- UCLA Center for the Health Sciences, Los Angeles, CA 90095, USA
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8
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Liao Z, Wang C, Tang X, Yang M, Duan Z, Liu L, Lu S, Ma L, Cheng R, Wang G, Liu H, Yang S, Xu J, Tadese DA, Mwangi J, Kamau PM, Zhang Z, Yang L, Liao G, Zhao X, Peng X, Lai R. Human transferrin receptor can mediate SARS-CoV-2 infection. Proc Natl Acad Sci U S A 2024; 121:e2317026121. [PMID: 38408250 DOI: 10.1073/pnas.2317026121] [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: 10/09/2023] [Accepted: 01/08/2024] [Indexed: 02/28/2024] Open
Abstract
Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection has been detected in almost all organs of coronavirus disease-19 patients, although some organs do not express angiotensin-converting enzyme-2 (ACE2), a known receptor of SARS-CoV-2, implying the presence of alternative receptors and/or co-receptors. Here, we show that the ubiquitously distributed human transferrin receptor (TfR), which binds to diferric transferrin to traffic between membrane and endosome for the iron delivery cycle, can ACE2-independently mediate SARS-CoV-2 infection. Human, not mouse TfR, interacts with Spike protein with a high affinity (KD ~2.95 nM) to mediate SARS-CoV-2 endocytosis. TfR knock-down (TfR-deficiency is lethal) and overexpression inhibit and promote SARS-CoV-2 infection, respectively. Humanized TfR expression enables SARS-CoV-2 infection in baby hamster kidney cells and C57 mice, which are known to be insusceptible to the virus infection. Soluble TfR, Tf, designed peptides blocking TfR-Spike interaction and anti-TfR antibody show significant anti-COVID-19 effects in cell and monkey models. Collectively, this report indicates that TfR is a receptor/co-receptor of SARS-CoV-2 mediating SARS-CoV-2 entry and infectivity by likely using the TfR trafficking pathway.
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Affiliation(s)
- Zhiyi Liao
- Engineering Laboratory of Peptides of Chinese Academy of Sciences, Key Laboratory of Bioactive Peptides of Yunnan Province, Kunming Institute of Zoology-Chinese University of Hong Kong Joint Laboratory of Bioresources and Molecular Research in Common Diseases, National Resource Center for Non-Human Primates, National Research Facility for Phenotypic & Genetic Analysis of Model Animals (Primate Facility), and Sino-African Joint Research Center, New Cornerstone Science Laboratory, Kunming Institute of Zoology, The Chinese Academy of Sciences, Kunming 650201, China
- Kunming College of Life Science, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Chaoming Wang
- Engineering Laboratory of Peptides of Chinese Academy of Sciences, Key Laboratory of Bioactive Peptides of Yunnan Province, Kunming Institute of Zoology-Chinese University of Hong Kong Joint Laboratory of Bioresources and Molecular Research in Common Diseases, National Resource Center for Non-Human Primates, National Research Facility for Phenotypic & Genetic Analysis of Model Animals (Primate Facility), and Sino-African Joint Research Center, New Cornerstone Science Laboratory, Kunming Institute of Zoology, The Chinese Academy of Sciences, Kunming 650201, China
- Kunming College of Life Science, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xiaopeng Tang
- Engineering Laboratory of Peptides of Chinese Academy of Sciences, Key Laboratory of Bioactive Peptides of Yunnan Province, Kunming Institute of Zoology-Chinese University of Hong Kong Joint Laboratory of Bioresources and Molecular Research in Common Diseases, National Resource Center for Non-Human Primates, National Research Facility for Phenotypic & Genetic Analysis of Model Animals (Primate Facility), and Sino-African Joint Research Center, New Cornerstone Science Laboratory, Kunming Institute of Zoology, The Chinese Academy of Sciences, Kunming 650201, China
- School of Basic Medicine, Qingdao University, Qingdao 266071, China
| | - Mengli Yang
- Institute of Medical Biology, Chinese Academy of Medical Sciences, Kunming 650118, China
| | - Zilei Duan
- Engineering Laboratory of Peptides of Chinese Academy of Sciences, Key Laboratory of Bioactive Peptides of Yunnan Province, Kunming Institute of Zoology-Chinese University of Hong Kong Joint Laboratory of Bioresources and Molecular Research in Common Diseases, National Resource Center for Non-Human Primates, National Research Facility for Phenotypic & Genetic Analysis of Model Animals (Primate Facility), and Sino-African Joint Research Center, New Cornerstone Science Laboratory, Kunming Institute of Zoology, The Chinese Academy of Sciences, Kunming 650201, China
| | - Lei Liu
- Laboratory of Animal Tumor Models, Frontiers Science Center for Disease-Related Molecular Network, State Key Laboratory of Biotherapy and Cancer Center, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Shuaiyao Lu
- Institute of Medical Biology, Chinese Academy of Medical Sciences, Kunming 650118, China
| | - Lei Ma
- Institute of Medical Biology, Chinese Academy of Medical Sciences, Kunming 650118, China
| | - Ruomei Cheng
- Engineering Laboratory of Peptides of Chinese Academy of Sciences, Key Laboratory of Bioactive Peptides of Yunnan Province, Kunming Institute of Zoology-Chinese University of Hong Kong Joint Laboratory of Bioresources and Molecular Research in Common Diseases, National Resource Center for Non-Human Primates, National Research Facility for Phenotypic & Genetic Analysis of Model Animals (Primate Facility), and Sino-African Joint Research Center, New Cornerstone Science Laboratory, Kunming Institute of Zoology, The Chinese Academy of Sciences, Kunming 650201, China
| | - Gan Wang
- Engineering Laboratory of Peptides of Chinese Academy of Sciences, Key Laboratory of Bioactive Peptides of Yunnan Province, Kunming Institute of Zoology-Chinese University of Hong Kong Joint Laboratory of Bioresources and Molecular Research in Common Diseases, National Resource Center for Non-Human Primates, National Research Facility for Phenotypic & Genetic Analysis of Model Animals (Primate Facility), and Sino-African Joint Research Center, New Cornerstone Science Laboratory, Kunming Institute of Zoology, The Chinese Academy of Sciences, Kunming 650201, China
| | - Hongqi Liu
- Institute of Medical Biology, Chinese Academy of Medical Sciences, Kunming 650118, China
| | - Shuo Yang
- Engineering Laboratory of Peptides of Chinese Academy of Sciences, Key Laboratory of Bioactive Peptides of Yunnan Province, Kunming Institute of Zoology-Chinese University of Hong Kong Joint Laboratory of Bioresources and Molecular Research in Common Diseases, National Resource Center for Non-Human Primates, National Research Facility for Phenotypic & Genetic Analysis of Model Animals (Primate Facility), and Sino-African Joint Research Center, New Cornerstone Science Laboratory, Kunming Institute of Zoology, The Chinese Academy of Sciences, Kunming 650201, China
- Kunming College of Life Science, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jingwen Xu
- Institute of Medical Biology, Chinese Academy of Medical Sciences, Kunming 650118, China
| | - Dawit Adisu Tadese
- Engineering Laboratory of Peptides of Chinese Academy of Sciences, Key Laboratory of Bioactive Peptides of Yunnan Province, Kunming Institute of Zoology-Chinese University of Hong Kong Joint Laboratory of Bioresources and Molecular Research in Common Diseases, National Resource Center for Non-Human Primates, National Research Facility for Phenotypic & Genetic Analysis of Model Animals (Primate Facility), and Sino-African Joint Research Center, New Cornerstone Science Laboratory, Kunming Institute of Zoology, The Chinese Academy of Sciences, Kunming 650201, China
- Kunming College of Life Science, University of Chinese Academy of Sciences, Beijing 100049, China
| | - James Mwangi
- Engineering Laboratory of Peptides of Chinese Academy of Sciences, Key Laboratory of Bioactive Peptides of Yunnan Province, Kunming Institute of Zoology-Chinese University of Hong Kong Joint Laboratory of Bioresources and Molecular Research in Common Diseases, National Resource Center for Non-Human Primates, National Research Facility for Phenotypic & Genetic Analysis of Model Animals (Primate Facility), and Sino-African Joint Research Center, New Cornerstone Science Laboratory, Kunming Institute of Zoology, The Chinese Academy of Sciences, Kunming 650201, China
- Kunming College of Life Science, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Peter Muiruri Kamau
- Engineering Laboratory of Peptides of Chinese Academy of Sciences, Key Laboratory of Bioactive Peptides of Yunnan Province, Kunming Institute of Zoology-Chinese University of Hong Kong Joint Laboratory of Bioresources and Molecular Research in Common Diseases, National Resource Center for Non-Human Primates, National Research Facility for Phenotypic & Genetic Analysis of Model Animals (Primate Facility), and Sino-African Joint Research Center, New Cornerstone Science Laboratory, Kunming Institute of Zoology, The Chinese Academy of Sciences, Kunming 650201, China
- Kunming College of Life Science, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Zhiye Zhang
- Engineering Laboratory of Peptides of Chinese Academy of Sciences, Key Laboratory of Bioactive Peptides of Yunnan Province, Kunming Institute of Zoology-Chinese University of Hong Kong Joint Laboratory of Bioresources and Molecular Research in Common Diseases, National Resource Center for Non-Human Primates, National Research Facility for Phenotypic & Genetic Analysis of Model Animals (Primate Facility), and Sino-African Joint Research Center, New Cornerstone Science Laboratory, Kunming Institute of Zoology, The Chinese Academy of Sciences, Kunming 650201, China
| | - Lian Yang
- Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650204, China
| | - Guoyang Liao
- Institute of Medical Biology, Chinese Academy of Medical Sciences, Kunming 650118, China
| | - Xudong Zhao
- Laboratory of Animal Tumor Models, Frontiers Science Center for Disease-Related Molecular Network, State Key Laboratory of Biotherapy and Cancer Center, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Xiaozhong Peng
- Institute of Medical Biology, Chinese Academy of Medical Sciences, Kunming 650118, China
| | - Ren Lai
- Engineering Laboratory of Peptides of Chinese Academy of Sciences, Key Laboratory of Bioactive Peptides of Yunnan Province, Kunming Institute of Zoology-Chinese University of Hong Kong Joint Laboratory of Bioresources and Molecular Research in Common Diseases, National Resource Center for Non-Human Primates, National Research Facility for Phenotypic & Genetic Analysis of Model Animals (Primate Facility), and Sino-African Joint Research Center, New Cornerstone Science Laboratory, Kunming Institute of Zoology, The Chinese Academy of Sciences, Kunming 650201, China
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9
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Shedroff E, Martin ML, Whitmer SLM, Brignone J, Garcia JB, Sen C, Nazar Y, Fabbri C, Morales-Betoulle M, Mendez J, Montgomery J, Morales MA, Klena JD. Novel Oliveros-like Clade C Mammarenaviruses from Rodents in Argentina, 1990-2020. Viruses 2024; 16:340. [PMID: 38543706 PMCID: PMC10976098 DOI: 10.3390/v16030340] [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: 12/27/2023] [Revised: 02/06/2024] [Accepted: 02/19/2024] [Indexed: 05/23/2024] Open
Abstract
Following an Argentine Hemorrhagic Fever (AHF) outbreak in the early 1990s, a rodent survey for Junín virus, a New World Clade B arenavirus, in endemic areas of Argentina was conducted. Since 1990, INEVH has been developing eco-epidemiological surveillance of rodents, inside and outside the Argentine Hemorrhagic Fever endemic area. Samples from rodents captured between 1993 and 2019 that were positive for Arenavirus infection underwent Sanger and unbiased, Illumina-based high-throughput sequencing, which yielded 5 complete and 88 partial Mammarenaviruses genomes. Previously, 11 genomes representing four species of New World arenavirus Clade C existed in public records. This work has generated 13 novel genomes, expanding the New World arenavirus Clade C to 24 total genomes. Additionally, two genomes exhibit sufficient genetic diversity to be considered a new species, as per ICTV guidelines (proposed name Mammarenavirus vellosense). The 13 novel genomes exhibited reassortment between the small and large segments in New World Mammarenaviruses. This work demonstrates that Clade C Mammarenavirus infections circulate broadly among Necromys species in the Argentine Hemorrhagic Fever endemic area; however, the risk for Clade C Mammarenavirus human infection is currently unknown.
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Affiliation(s)
- Elizabeth Shedroff
- Viral Special Pathogens Branch, The Centers for Disease Control and Prevention, 1600 Clifton Rd., Atlanta, GA 30329, USA; (E.S.); (S.L.M.W.); (M.M.-B.); (J.M.)
| | - Maria Laura Martin
- Instituto Nacional de Enfermedades Virales Humanas Dr. Julio I. Maiztegui, Monteagudo 2510, Pergamino 2700, Argentina; (M.L.M.); (J.B.); (J.B.G.); (C.S.); (Y.N.); (C.F.); (M.A.M.)
| | - Shannon L. M. Whitmer
- Viral Special Pathogens Branch, The Centers for Disease Control and Prevention, 1600 Clifton Rd., Atlanta, GA 30329, USA; (E.S.); (S.L.M.W.); (M.M.-B.); (J.M.)
| | - Julia Brignone
- Instituto Nacional de Enfermedades Virales Humanas Dr. Julio I. Maiztegui, Monteagudo 2510, Pergamino 2700, Argentina; (M.L.M.); (J.B.); (J.B.G.); (C.S.); (Y.N.); (C.F.); (M.A.M.)
| | - Jorge B. Garcia
- Instituto Nacional de Enfermedades Virales Humanas Dr. Julio I. Maiztegui, Monteagudo 2510, Pergamino 2700, Argentina; (M.L.M.); (J.B.); (J.B.G.); (C.S.); (Y.N.); (C.F.); (M.A.M.)
| | - Carina Sen
- Instituto Nacional de Enfermedades Virales Humanas Dr. Julio I. Maiztegui, Monteagudo 2510, Pergamino 2700, Argentina; (M.L.M.); (J.B.); (J.B.G.); (C.S.); (Y.N.); (C.F.); (M.A.M.)
| | - Yael Nazar
- Instituto Nacional de Enfermedades Virales Humanas Dr. Julio I. Maiztegui, Monteagudo 2510, Pergamino 2700, Argentina; (M.L.M.); (J.B.); (J.B.G.); (C.S.); (Y.N.); (C.F.); (M.A.M.)
| | - Cintia Fabbri
- Instituto Nacional de Enfermedades Virales Humanas Dr. Julio I. Maiztegui, Monteagudo 2510, Pergamino 2700, Argentina; (M.L.M.); (J.B.); (J.B.G.); (C.S.); (Y.N.); (C.F.); (M.A.M.)
| | - Maria Morales-Betoulle
- Viral Special Pathogens Branch, The Centers for Disease Control and Prevention, 1600 Clifton Rd., Atlanta, GA 30329, USA; (E.S.); (S.L.M.W.); (M.M.-B.); (J.M.)
| | - Jairo Mendez
- Pan American Health Organization, 525 23rd St. New World, Washington, DC 20037, USA;
| | - Joel Montgomery
- Viral Special Pathogens Branch, The Centers for Disease Control and Prevention, 1600 Clifton Rd., Atlanta, GA 30329, USA; (E.S.); (S.L.M.W.); (M.M.-B.); (J.M.)
| | - Maria Alejandra Morales
- Instituto Nacional de Enfermedades Virales Humanas Dr. Julio I. Maiztegui, Monteagudo 2510, Pergamino 2700, Argentina; (M.L.M.); (J.B.); (J.B.G.); (C.S.); (Y.N.); (C.F.); (M.A.M.)
| | - John D. Klena
- Viral Special Pathogens Branch, The Centers for Disease Control and Prevention, 1600 Clifton Rd., Atlanta, GA 30329, USA; (E.S.); (S.L.M.W.); (M.M.-B.); (J.M.)
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10
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Huang R, Wu J, Ma Y, Kang K. Molecular Mechanisms of Ferroptosis and Its Role in Viral Pathogenesis. Viruses 2023; 15:2373. [PMID: 38140616 PMCID: PMC10747891 DOI: 10.3390/v15122373] [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: 10/06/2023] [Revised: 11/26/2023] [Accepted: 11/29/2023] [Indexed: 12/24/2023] Open
Abstract
Ferroptosis is a novelty form of regulated cell death, and it is mainly characterized by iron accumulation and lipid peroxidation in the cells. Its underlying mechanism is related to the amino acid, iron, and lipid metabolisms. During viral infection, pathogenic microorganisms have evolved to interfere with ferroptosis, and ferroptosis is often manipulated by viruses to regulate host cell servicing for viral reproduction. Therefore, this review provides a comprehensive overview of the mechanisms underlying ferroptosis, elucidates the intricate signaling pathways involved, and explores the pivotal role of ferroptosis in the pathogenesis of viral infections. By enhancing our understanding of ferroptosis, novel therapeutic strategies can be devised to effectively prevent and treat diseases associated with this process. Furthermore, unraveling the developmental mechanisms through which viral infections exploit ferroptosis will facilitate development of innovative antiviral agents.
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Affiliation(s)
- Riwei Huang
- College of Coastal Agricultural Sciences, Guangdong Ocean University, Zhanjiang 524088, China; (R.H.); (J.W.); (Y.M.)
- College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, China
| | - Jiang Wu
- College of Coastal Agricultural Sciences, Guangdong Ocean University, Zhanjiang 524088, China; (R.H.); (J.W.); (Y.M.)
| | - Yaodan Ma
- College of Coastal Agricultural Sciences, Guangdong Ocean University, Zhanjiang 524088, China; (R.H.); (J.W.); (Y.M.)
| | - Kai Kang
- College of Coastal Agricultural Sciences, Guangdong Ocean University, Zhanjiang 524088, China; (R.H.); (J.W.); (Y.M.)
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11
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Tibbs TN, Donoghue LJ, Buzzelli AA, Misumi I, DeMonia M, Ferris MT, Kelada SN, Whitmire JK. Mice with FVB-derived sequence on chromosome 17 succumb to disseminated virus infection due to aberrant NK cell and T cell responses. iScience 2023; 26:108348. [PMID: 38026197 PMCID: PMC10665959 DOI: 10.1016/j.isci.2023.108348] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2023] [Revised: 09/19/2023] [Accepted: 10/23/2023] [Indexed: 12/01/2023] Open
Abstract
Zoonotic arenavirus infections can result in viral hemorrhagic disease, characterized by platelet loss, petechia, and multi-organ injury. The mechanisms governing these outcomes are likely impacted by virus strain and infection dose, as well as an individual's genetic background and immune constitution. To better understand the processes leading to severe pathogenesis, we compared two strains of inbred mice, C57BL/6J (B6) and FVB/NJ (FVB), that have diametrically opposed outcomes during disseminated lymphocytic choriomeningitis virus (LCMV) infection. Infection caused minimal pathogenesis in B6 mice, whereas FVB mice developed acute hepatitis and perished due, in part, to aberrant NK cell and T cell responses. Susceptible mice showed an outgrowth of cytolytic CD4+ T cells and loss of Treg cells. B6 congenic mice with the FVB allele at a 25Mb locus on chromosome 17 recapitulated FVB pathogenesis upon infection. A locus containing a limited number of variants in immune-related genes greatly impacts survival during infection.
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Affiliation(s)
- Taylor N. Tibbs
- Department of Microbiology and Immunology, UNC-Chapel Hill School of Medicine, Chapel Hill, NC 27599, USA
| | - Lauren J. Donoghue
- Department of Genetics, UNC-Chapel Hill School of Medicine, Chapel Hill, NC 27599, USA
| | - Ashlyn A. Buzzelli
- Department of Genetics, UNC-Chapel Hill School of Medicine, Chapel Hill, NC 27599, USA
| | - Ichiro Misumi
- Department of Genetics, UNC-Chapel Hill School of Medicine, Chapel Hill, NC 27599, USA
| | - Maggie DeMonia
- Department of Genetics, UNC-Chapel Hill School of Medicine, Chapel Hill, NC 27599, USA
| | - Martin T. Ferris
- Department of Genetics, UNC-Chapel Hill School of Medicine, Chapel Hill, NC 27599, USA
| | - Samir N.P. Kelada
- Department of Genetics, UNC-Chapel Hill School of Medicine, Chapel Hill, NC 27599, USA
| | - Jason K. Whitmire
- Department of Microbiology and Immunology, UNC-Chapel Hill School of Medicine, Chapel Hill, NC 27599, USA
- Department of Genetics, UNC-Chapel Hill School of Medicine, Chapel Hill, NC 27599, USA
- Lineberger Comprehensive Cancer Center, UNC-Chapel Hill School of Medicine, Chapel Hill, NC 27599, USA
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12
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Rodrigues Dutra JV, Santos IA, Grosche VR, Jardim ACG, de Aguiar RS, Junior NN, José DP. L protein characterization and in silico screening of putative broad range target molecules for pathogenic mammarenaviruses from South America. J Biomol Struct Dyn 2023:1-19. [PMID: 37817533 DOI: 10.1080/07391102.2023.2268186] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2023] [Accepted: 10/03/2023] [Indexed: 10/12/2023]
Abstract
The genus Mammarenavirus belonging to the family Arenaviridae encompasses pathogenic viral species capable of triggering severe diseases in humans, causing concern for the health system due to the high fatality rate associated with them. Currently, there is a dearth of specific therapies against pathogens of the genus. Natural products isolated from plants have impacted the development of drugs against several diseases. The Núcleo de Bioensaios, Biossíntese e Ecofisiologia de Produtos Naturais (NuBBE) database offers several natural compounds with antimicrobial activities that can be used in the development of new antiviral drugs. In this context, here we modeled the arenavirus L protein, multifunctional machinery essential for the viral replicative cycle, making this enzyme a potential candidate for targeting the development of antivirals against genus pathogens. Using the modeled L protein, a virtual screening was performed, which suggested eleven molecules from the NuBBE database that binds to the active site of the L protein, which was promising in the in silico predictions of absorption and toxicity analysis. The NuBBE 1642 molecule proved to be the best candidate for four of the five species evaluated, acting as a possible broad-spectrum molecule. Additionally, our results showed that the L protein is highly conserved among species of the genus, as well as presenting close phylogenetic relationships between many of the species studied, strengthening its candidacy as a therapeutic target. The data presented here demonstrate that some NuBBE molecules are potential ligands for the L protein of arenaviruses, which may help to contain possible outbreaks.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- João Victor Rodrigues Dutra
- Federal University of Triângulo Mineiro, Iturama, Minas Gerais, Brazil
- Laboratory of Integrative Biology, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - Igor Andrade Santos
- Laboratory of Antiviral Research, Institute of Biomedical Science, ICBIM, Federal University of Uberlândia, Uberlândia, Brazil
| | - Victória Riquena Grosche
- Laboratory of Antiviral Research, Institute of Biomedical Science, ICBIM, Federal University of Uberlândia, Uberlândia, Brazil
- São Paulo State University, São José do Rio Preto, Brazil
| | - Ana Carolina Gomes Jardim
- Laboratory of Antiviral Research, Institute of Biomedical Science, ICBIM, Federal University of Uberlândia, Uberlândia, Brazil
- São Paulo State University, São José do Rio Preto, Brazil
| | - Renato Santana de Aguiar
- Laboratory of Integrative Biology, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - Nilson Nicolau Junior
- Laboratory of Molecular Modeling, Institute of Biotechnology, Federal University of Uberlândia, Uberlândia, Brazil
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13
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Bezerra EHS, Melo-Hanchuk TD, Marques RE. Structural and molecular biology of Sabiá virus. Exp Biol Med (Maywood) 2023; 248:1624-1634. [PMID: 37937408 PMCID: PMC10723027 DOI: 10.1177/15353702231199071] [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] [Indexed: 11/09/2023] Open
Abstract
Brazilian mammarenavirus, or Sabiá virus (SABV), is a New World (NW) arenavirus associated with fulminant hemorrhagic disease in humans and the sole biosafety level 4 microorganism ever isolated in Brazil. Since the isolation of SABV in the 1990s, studies on viral biology have been scarce, with no available countermeasures against SABV infection or disease. Here we provide a comprehensive review of SABV biology, including key aspects of SABV replication, and comparisons with related Old World and NW arenaviruses. SABV is most likely a rodent-borne virus, transmitted to humans, through exposure to urine and feces in peri-urban areas. Using protein structure prediction methods and alignments, we analyzed shared and unique features of SABV proteins (GPC, NP, Z, and L) that could be explored in search of therapeutic strategies, including repurposing intended application against arenaviruses. Highly conserved catalytic activities present in L protein could be targeted for broad-acting antiviral activity among arenaviruses, while protein-protein interactions, such as those between L and the matrix protein Z, have evolved in NW arenaviruses and should be specific to SABV. The nucleoprotein (NP) also shares targetable interaction interfaces with L and Z and exhibits exonuclease activity in the C-terminal domain, which may be involved in multiple aspects of SABV replication. Envelope glycoproteins GP1 and GP2 have been explored in the development of promising cross-reactive neutralizing antibodies and vaccines, some of which could be repurposed for SABV. GP1 remains a challenging target in SABV as evolutive pressures render it the most variable viral protein in terms of both sequence and structure, while antiviral strategies targeting the Z protein remain to be validated. In conclusion, the prediction and analysis of protein structures should revolutionize research on viruses such as SABV by facilitating the rational design of countermeasures while reducing dependence on sophisticated laboratory infrastructure for experimental validation.
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Affiliation(s)
| | | | - Rafael Elias Marques
- Brazilian Biosciences National Laboratory (LNBio), Brazilian Center for Research in Energy and Materials (CNPEM), São Paulo 13083-100, Brazil
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14
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Cline C, Zeng X, Bell TM, Shaia C, Facemire P, Williams J, Davis N, Babka A, Picado E, Fitzpatrick C, Golden JW. Temporal changes in pathology and viral RNA distribution in guinea pigs following separate infection with two New World Arenaviruses. PLoS Negl Trop Dis 2023; 17:e0011620. [PMID: 37682988 PMCID: PMC10511090 DOI: 10.1371/journal.pntd.0011620] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2023] [Revised: 09/20/2023] [Accepted: 08/22/2023] [Indexed: 09/10/2023] Open
Abstract
Numerous arenaviruses have been identified throughout the Americas and a subset of these viruses cause viral hemorrhagic fever in humans. This study compared the pathology and viral RNA distribution in Hartley guinea pigs challenged with two human-disease causing New World arenaviruses, Junin virus (JUNV) or Guanarito virus (GTOV). Histopathologic analysis and RNA in situ hybridization revealed similar pathology and viral RNA distribution for both groups of animals challenged with either JUNV or GTOV on days 3, 7, 10 and 12 post exposure (PE). Gross lesions were first observed on day 7 and primarily involved the lungs and liver. The most severe histologic lesions occurred in the lymph nodes, spleen, and thymus and included lymphoid depletion and necrosis which increased in severity over time. Extensive necrosis was also observed in the bone marrow on day 12. Minimal to mild inflammation with and without necrosis was observed in the choroid plexus of the brain, choroid of the eye, intestinal tract, lung and adrenal gland. Significant liver lesions were rare, consisting predominantly of hepatocyte vacuolation. Viral RNA labeling was identified in nearly all organs examined, was often extensive in certain organs and generally increased over time starting on day 7. Our data demonstrate the guinea pig may serve as a useful model to study New World arenavirus infection in humans and for the evaluation and development of medical countermeasures.
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Affiliation(s)
- Curtis Cline
- Pathology Division, United States Army Medical Research Institute of Infectious Diseases, Fort Detrick, Maryland, United States of America
| | - Xiankun Zeng
- Pathology Division, United States Army Medical Research Institute of Infectious Diseases, Fort Detrick, Maryland, United States of America
| | - Todd M. Bell
- Foundational Sciences Directorate, United States Army Medical Research Institute of Infectious Diseases, Fort Detrick, Maryland, United States of America
| | - Carl Shaia
- Rocky Mountain Veterinary Branch, Division of Intramural Research, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Hamilton, Montana, United States of America
| | - Paul Facemire
- Pathology Division, United States Army Medical Research Institute of Infectious Diseases, Fort Detrick, Maryland, United States of America
| | - Janice Williams
- Pathology Division, United States Army Medical Research Institute of Infectious Diseases, Fort Detrick, Maryland, United States of America
| | - Neil Davis
- Pathology Division, United States Army Medical Research Institute of Infectious Diseases, Fort Detrick, Maryland, United States of America
| | - April Babka
- Pathology Division, United States Army Medical Research Institute of Infectious Diseases, Fort Detrick, Maryland, United States of America
| | - Edwin Picado
- Pathology Division, United States Army Medical Research Institute of Infectious Diseases, Fort Detrick, Maryland, United States of America
| | - Colin Fitzpatrick
- Virology Division, United States Army Medical Research Institute of Infectious Diseases, Fort Detrick, Maryland, United States of America
| | - Joseph W. Golden
- Virology Division, United States Army Medical Research Institute of Infectious Diseases, Fort Detrick, Maryland, United States of America
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15
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Alvarez De Lauro AE, Pelaez MA, Marquez AB, Wagner MS, Scolaro LA, García CC, Damonte EB, Sepúlveda CS. Effects of the Natural Flavonoid Quercetin on Arenavirus Junín Infection. Viruses 2023; 15:1741. [PMID: 37632083 PMCID: PMC10459926 DOI: 10.3390/v15081741] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2023] [Revised: 08/02/2023] [Accepted: 08/11/2023] [Indexed: 08/27/2023] Open
Abstract
There is no specific chemotherapy approved for the treatment of pathogenic arenaviruses that cause severe hemorrhagic fever (HF) in the population of endemic regions in America and Africa. The present study reports the effects of the natural flavonoid quercetin (QUER) on the infection of A549 and Vero cells with Junín virus (JUNV), agent of the Argentine HF. By infectivity assays, a very effective dose-dependent reduction of JUNV multiplication was shown by cell pretreatment at 2-6 h prior to the infection at non-cytotoxic concentrations, with 50% effective concentration values in the range of 6.1-7.5 µg/mL. QUER was also active by post-infection treatment but with minor efficacy. Mechanistic studies indicated that QUER mainly affected the early steps of virus adsorption and internalization in the multiplication cycle of JUNV. Treatment with QUER blocked the phosphorylation of Akt without changes in the total protein expression, detected by Western blot, and the consequent perturbation of the PI3K/Akt pathway was also associated with the fluorescence redistribution from membrane to cytoplasm of TfR1, the cell receptor recognized by JUNV. Then, it appears that the cellular antiviral state, induced by QUER treatment, leads to the prevention of JUNV entry into the cell.
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Affiliation(s)
| | | | | | | | | | | | - Elsa Beatriz Damonte
- Laboratory of Antiviral Strategies, Biochemistry Department, School of Sciences, University of Buenos Aires, IQUIBICEN, University of Buenos Aires/Consejo Nacional de Investigaciones Científicas y Técnicas, Buenos Aires 1428, Argentina
| | - Claudia Soledad Sepúlveda
- Laboratory of Antiviral Strategies, Biochemistry Department, School of Sciences, University of Buenos Aires, IQUIBICEN, University of Buenos Aires/Consejo Nacional de Investigaciones Científicas y Técnicas, Buenos Aires 1428, Argentina
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16
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Zhang Y, York J, Brindley MA, Nunberg JH, Melikyan GB. Fusogenic structural changes in arenavirus glycoproteins are associated with viroporin activity. PLoS Pathog 2023; 19:e1011217. [PMID: 37494374 PMCID: PMC10406333 DOI: 10.1371/journal.ppat.1011217] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2023] [Revised: 08/07/2023] [Accepted: 07/04/2023] [Indexed: 07/28/2023] Open
Abstract
Many enveloped viruses enter host cells by fusing with acidic endosomes. The fusion activity of multiple viral envelope glycoproteins does not generally affect viral membrane permeability. However, fusion induced by the Lassa virus (LASV) glycoprotein complex (GPc) is always preceded by an increase in viral membrane permeability and the ensuing acidification of the virion interior. Here, systematic investigation of this LASV fusion phenotype using single pseudovirus tracking in live cells reveals that the change in membrane barrier function is associated with the fusogenic conformational reorganization of GPc. We show that a small-molecule fusion inhibitor or mutations that impair viral fusion by interfering with GPc refolding into the post-fusion structure prevent the increase in membrane permeability. We find that the increase in virion membrane permeability occurs early during endosomal maturation and is facilitated by virus-cell contact. This increase is observed using diverse arenavirus glycoproteins, whether presented on lentivirus-based pseudoviruses or arenavirus-like particles, and in multiple different cell types. Collectively, these results suggest that conformational changes in GPc triggered by low pH and cell factor binding are responsible for virion membrane permeabilization and acidification of the virion core prior to fusion. We propose that this viroporin-like activity may augment viral fusion and/or post-fusion steps of infection, including ribonucleoprotein release into the cytoplasm.
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Affiliation(s)
- You Zhang
- Department of Pediatrics, Emory University School of Medicine, Atlanta, Georgia, United States of America
- Children’s Healthcare of Atlanta, Atlanta, Georgia, United States of America
| | - Joanne York
- Montana Biotechnology Center, University of Montana, Missoula, Montana, United States of America
| | - Melinda A. Brindley
- Department of Infectious Diseases, Department of Population Health, College of Veterinary Medicine, University of Georgia, Athens, Georgia, United States of America
| | - Jack H. Nunberg
- Montana Biotechnology Center, University of Montana, Missoula, Montana, United States of America
| | - Gregory B. Melikyan
- Department of Pediatrics, Emory University School of Medicine, Atlanta, Georgia, United States of America
- Children’s Healthcare of Atlanta, Atlanta, Georgia, United States of America
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17
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Saito T, Reyna RA, Taniguchi S, Littlefield K, Paessler S, Maruyama J. Vaccine Candidates against Arenavirus Infections. Vaccines (Basel) 2023; 11:635. [PMID: 36992218 PMCID: PMC10057967 DOI: 10.3390/vaccines11030635] [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: 01/18/2023] [Revised: 03/09/2023] [Accepted: 03/11/2023] [Indexed: 03/14/2023] Open
Abstract
The viral family Arenaviridae contains several members that cause severe, and often lethal, diseases in humans. Several highly pathogenic arenaviruses are classified as Risk Group 4 agents and must be handled in the highest biological containment facility, biosafety level-4 (BSL-4). Vaccines and treatments are very limited for these pathogens. The development of vaccines is crucial for the establishment of countermeasures against highly pathogenic arenavirus infections. While several vaccine candidates have been investigated, there are currently no approved vaccines for arenavirus infection except for Candid#1, a live-attenuated Junin virus vaccine only licensed in Argentina. Current platforms under investigation for use include live-attenuated vaccines, recombinant virus-based vaccines, and recombinant proteins. We summarize here the recent updates of vaccine candidates against arenavirus infections.
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Affiliation(s)
- Takeshi Saito
- Department of Pathology, University of Texas Medical Branch, Galveston, TX 77555, USA
| | - Rachel A. Reyna
- Department of Pathology, University of Texas Medical Branch, Galveston, TX 77555, USA
| | - Satoshi Taniguchi
- Department of Pathology, University of Texas Medical Branch, Galveston, TX 77555, USA
| | - Kirsten Littlefield
- Department of Microbiology & Immunology, University of Texas Medical Branch, Galveston, TX 77555, USA
| | - Slobodan Paessler
- Department of Pathology, University of Texas Medical Branch, Galveston, TX 77555, USA
| | - Junki Maruyama
- Department of Pathology, University of Texas Medical Branch, Galveston, TX 77555, USA
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18
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Prévost J, Warner BM, Safronetz D. Multitasking to prevent viral haemorrhagic fevers. Nat Microbiol 2023; 8:8-9. [PMID: 36604509 DOI: 10.1038/s41564-022-01296-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Jérémie Prévost
- Special Pathogens Program, National Microbiology Laboratory Branch, Public Health Agency of Canada, Winnipeg, Manitoba, Canada
| | - Bryce M Warner
- Special Pathogens Program, National Microbiology Laboratory Branch, Public Health Agency of Canada, Winnipeg, Manitoba, Canada
| | - David Safronetz
- Special Pathogens Program, National Microbiology Laboratory Branch, Public Health Agency of Canada, Winnipeg, Manitoba, Canada. .,Department of Medical Microbiology and Infectious Diseases, University of Manitoba, Winnipeg, Manitoba, Canada.
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Naveed M, Makhdoom SI, Ali U, Jabeen K, Aziz T, Khan AA, Jamil S, Shahzad M, Alharbi M, Alshammari A. Immunoinformatics Approach to Design Multi-Epitope-Based Vaccine against Machupo Virus Taking Viral Nucleocapsid as a Potential Candidate. Vaccines (Basel) 2022; 10:vaccines10101732. [PMID: 36298597 PMCID: PMC9609340 DOI: 10.3390/vaccines10101732] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2022] [Revised: 10/14/2022] [Accepted: 10/14/2022] [Indexed: 01/09/2023] Open
Abstract
The family members of Arenaviridae include members of the genus Machupo virus, which have bi-segmented negative sense RNA inside the envelope and can be transferred to humans through rodent carriers. Machupo virus, a member of the mammarenavirus genus, causes Bolivian hemorrhage fever, its viral nucleocapsid protein being a significant virulence factor. Currently, no treatment is available for Bolivian hemorrhage fever and work to develop a protective as well as post-diagnosis treatment is underway. Adding to these efforts, this study employed a reverse-vaccinology approach to design a vaccine with B and T-cell epitopes of the viral nucleocapsid protein of the Machupo virus. Five B-cell specific, eight MHC-I restricted, and 14 MHC-II restricted epitopes were finalized for the construct based on an antigenicity score of >0.5 and non-allergenicity as a key characteristic. The poly-histidine tag was used to construct an immunogenic and stable vaccine construct and 50S ribosomal 46 protein L7/L12 adjuvant with linkers (EAAAK, GPGPG, and AYY). It covers 99.99% of the world’s population, making it highly efficient. The physicochemical properties like the aliphatic index (118.31) and the GRAVY index (0.302) showed that the vaccine is easily soluble. The overall Ramachandran score of the construct was 90.7%, and the instability index was 35.13, endorsing a stable structure. The immune simulations demonstrated a long-lasting antibody response even after the excretion of the antigen from the body in the first 5 days of injection. The IgM + IgG titers were predicted to rise to 6000 10 days post-injection and were illustrated to be stable (around 3000) after a month, elucidating that the vaccine would be effective and provide enduring protection. Lastly, the molecular interaction between the construct and the IKBKE receptor was significant and a higher eigenfactor value in MD simulations confirmed the stable molecular interaction between the receptor and the vaccine, validating our construct.
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Affiliation(s)
- Muhammad Naveed
- Department of Biotechnology, Faculty of Science and Technology, University of Central Punjab, Lahore 54590, Pakistan
- Correspondence: or (M.N.); or (T.A.)
| | - Syeda Izma Makhdoom
- Department of Biotechnology, Faculty of Science and Technology, University of Central Punjab, Lahore 54590, Pakistan
| | - Urooj Ali
- Department of Biotechnology, Faculty of Science and Technology, University of Central Punjab, Lahore 54590, Pakistan
- Department of Biotechnology, Quaid-I-Azam University Islamabad, Islamabad 45320, Pakistan
| | - Khizra Jabeen
- Department of Biotechnology, Faculty of Science and Technology, University of Central Punjab, Lahore 54590, Pakistan
| | - Tariq Aziz
- School of Food & Biological Engineering, Jiangsu University, Zhenjiang 212013, China
- Correspondence: or (M.N.); or (T.A.)
| | - Ayaz Ali Khan
- Department of Biotechnology, University of Malakand, Chakdara 18800, Pakistan
| | - Sumbal Jamil
- Rehman Medical Institute, Peshawar 25000, Pakistan
| | - Muhammad Shahzad
- School of Biological Sciences, Health and Life Sciences Building, University of Reading, Reading RG6 6AX, UK
| | - Metab Alharbi
- Department of Pharmacology and Toxicology, College of Pharmacy, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
| | - Abdulrahman Alshammari
- Department of Pharmacology and Toxicology, College of Pharmacy, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
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20
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Yin HC, Wan DC, Chen HY. Metagenomic analysis of viral diversity and a novel astroviruse of forest rodent. Virol J 2022; 19:138. [PMID: 36045380 PMCID: PMC9429442 DOI: 10.1186/s12985-022-01847-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2021] [Accepted: 06/30/2022] [Indexed: 11/10/2022] Open
Abstract
Background Rodents are important virus reservoirs and natural hosts for multiple viruses. They are one of the wild animals that are extremely threatening to the spread of human viruses. Therefore, research on rodents carrying viruses and identifying new viruses that rodents carry is of great significance for preventing and controlling viral diseases. Methods In this study, fecal samples from six species of forest rodents in Northeast China were sequenced using metagenomics, and an abundance of virome information was acquired. Selection of important zoonotic in individual rodents for further sequence and evolutionary analysis. Results Among the top 10 most abundant viral families, RNA virus include Orthomyxoviridae, Picornaviridae, Bunyaviridae and Arenaviridae, DNA virus include Herpesviridae, Insect virus include Nodaviridae and Baculoviridae, Plant virus Tombusviridae and Phage (Myoriviridae). Except for Myoviridae, there was no significant difference in the abundance of virus families in the feces of each rodent species. In addition, a new strain of astrovirus was discovered, with an ORF and genome arrangement comparable to other rodent astroviruses.The newly identified astrovirus had the highest similarity with the rodent astrovirus isolate, CHN/100. Conclusions The data obtained in this study provided an overview of the viral community present in these rodent fecal samples, revealing some rodent-associated viruses closely related to known human or animal pathogens. Strengthening our understanding of unclassified viruses harbored by rodents present in the natural environment could provide scientific guidance for preventing and controlling new viral outbreaks that can spread via rodents.
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Affiliation(s)
- Hai-Chang Yin
- College of Life Science and Agriculture Forestry, Qiqihar University, Qiqihar, 161006, Heilongjiang, China
| | - De-Cai Wan
- College of Life Science and Agriculture Forestry, Qiqihar University, Qiqihar, 161006, Heilongjiang, China
| | - Hong-Yan Chen
- State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, The Chinese Academy of Agriculture Sciences, 678 Haping Road, Harbin, 150069, China.
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21
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Ferroptosis in viral infection: the unexplored possibility. Acta Pharmacol Sin 2022; 43:1905-1915. [PMID: 34873317 PMCID: PMC8646346 DOI: 10.1038/s41401-021-00814-1] [Citation(s) in RCA: 33] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2021] [Accepted: 11/01/2021] [Indexed: 02/06/2023] Open
Abstract
Virus-induced cell death has long been thought of as a double-edged sword in the inhibition or exacerbation of viral infections. The vital role of iron, an essential element for various enzymes in the maintenance of cellular physiology and efficient viral replication, places it at the crossroads and makes it a micronutrient of competition between the viruses and the host. Viruses can interrupt iron uptake and the antioxidant response system, while others can utilize iron transporter proteins as receptors. Interestingly, the unavailability of iron facilitates certain viral infections and causes cell death characterized by lipid peroxide accumulation and malfunction of the antioxidant system. In this review, we discuss how iron uptake, regulation and metabolism, including the redistribution of iron in the host defense system during viral infection, can induce ferroptosis. Fenton reactions, a central characteristic of ferroptosis, are caused by the increased iron content in the cell. Therefore, viral infections that increase cellular iron content or intestinal iron absorption are likely to cause ferroptosis. In addition, we discuss the hijacking of the iron regulatoy pathway and the antioxidant response, both of which are typical in viral infections. Understanding the potential signaling mechanisms of ferroptosis in viral infections will aid in the development of new therapeutic agents.
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22
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Nastri AC, Duarte-Neto AN, Casadio LVB, Souza WMD, Claro IM, Manuli ER, Selegatto G, Salomão MC, Fialkovitz G, Taborda M, Almeida BLD, Magri MC, Guedes AR, Perdigão Neto LV, Sataki FM, Guimarães T, Mendes-Correa MC, Tozetto-Mendoza TR, Fumagalli MJ, Ho YL, Maia da Silva CA, Coletti TM, Goes de Jesus J, Romano CM, Hill SC, Pybus O, Rebello Pinho JR, Ledesma FL, Casal YR, Kanamura CT, Tadeu de Araújo LJ, Ferreira CSDS, Guerra JM, Figueiredo LTM, Dolhnikoff M, Faria NR, Sabino EC, Alves VAF, Levin AS. Understanding Sabiá virus infections (Brazilian mammarenavirus). Travel Med Infect Dis 2022; 48:102351. [PMID: 35537676 DOI: 10.1016/j.tmaid.2022.102351] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2022] [Revised: 04/27/2022] [Accepted: 04/28/2022] [Indexed: 02/09/2023]
Abstract
BACKGROUND Only two naturally occurring human Sabiá virus (SABV) infections have been reported, and those occurred over 20 years ago. METHODS We diagnosed two new cases of SABV infection using metagenomics in patients thought to have severe yellow fever and described new features of histopathological findings. RESULTS We characterized clinical manifestations, histopathology and analyzed possible nosocomial transmission. Patients presented with hepatitis, bleeding, neurological alterations and died. We traced twenty-nine hospital contacts and evaluated them clinically and by RT-PCR and neutralizing antibodies. Autopsies uncovered unique features on electron microscopy, such as hepatocyte "pinewood knot" lesions. Although previous reports with similar New-World arenavirus had nosocomial transmission, our data did not find any case in contact tracing. CONCLUSIONS Although an apparent by rare, Brazilian mammarenavirus infection is an etiology for acute hemorrhagic fever syndrome. The two fatal cases had peculiar histopathological findings not previously described. The virological diagnosis was possible only by contemporary techniques such as metagenomic assays. We found no subsequent infections when we used serological and molecular tests to evaluate close contacts.
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Affiliation(s)
- Ana Catharina Nastri
- Division of Infectious Diseases, Hospital das Clínicas, Faculdade de Medicina, Universidade de Sao Paulo, Brazil.
| | - Amaro Nunes Duarte-Neto
- Department of Pathology, Faculdade de Medicina, Universidade de Sao Paulo, Brazil; Núcleo de Anatomia Patológica, Instituto Adolfo Lutz, Sao Paulo, Brazil.
| | - Luciana Vilas Boas Casadio
- Division of Infectious Diseases, Hospital das Clínicas, Faculdade de Medicina, Universidade de Sao Paulo, Brazil.
| | - William Marciel de Souza
- World Reference Center for Emerging Viruses and Arboviruses and Department of Microbiology and Immunology, University of Texas Medical Branch at Galveston, Galveston, TX, USA.
| | - Ingra M Claro
- Department of Infectious Diseases, Faculdade de Medicina, Universidade de Sao Paulo, Brazil; Instituto de Medicina Tropical, Faculdade de Medicina, Universidade de Sao Paulo, Brazil.
| | - Erika R Manuli
- Department of Infectious Diseases, Faculdade de Medicina, Universidade de Sao Paulo, Brazil; Instituto de Medicina Tropical, Faculdade de Medicina, Universidade de Sao Paulo, Brazil.
| | - Gloria Selegatto
- Division of Infectious Diseases, Hospital das Clínicas, Faculdade de Medicina, Universidade de Sao Paulo, Brazil.
| | - Matias C Salomão
- Infection Control Department, Hospital das Clínicas, Faculdade de Medicina, Universidade de Sao Paulo, Brazil.
| | - Gabriel Fialkovitz
- Division of Infectious Diseases, Hospital das Clínicas, Faculdade de Medicina, Universidade de Sao Paulo, Brazil.
| | - Mariane Taborda
- Division of Infectious Diseases, Hospital das Clínicas, Faculdade de Medicina, Universidade de Sao Paulo, Brazil.
| | - Bianca Leal de Almeida
- Division of Infectious Diseases, Hospital das Clínicas, Faculdade de Medicina, Universidade de Sao Paulo, Brazil; Infection Control Department, Hospital das Clínicas, Faculdade de Medicina, Universidade de Sao Paulo, Brazil.
| | - Marcello C Magri
- Division of Infectious Diseases, Hospital das Clínicas, Faculdade de Medicina, Universidade de Sao Paulo, Brazil.
| | - Ana Rúbia Guedes
- Infection Control Department, Hospital das Clínicas, Faculdade de Medicina, Universidade de Sao Paulo, Brazil.
| | - Lauro Vieira Perdigão Neto
- Infection Control Department, Hospital das Clínicas, Faculdade de Medicina, Universidade de Sao Paulo, Brazil.
| | - Fatima Mitie Sataki
- Division of Infectious Diseases, Hospital das Clínicas, Faculdade de Medicina, Universidade de Sao Paulo, Brazil.
| | - Thais Guimarães
- Infection Control Department, Hospital das Clínicas, Faculdade de Medicina, Universidade de Sao Paulo, Brazil.
| | - Maria Cassia Mendes-Correa
- Department of Infectious Diseases, Faculdade de Medicina, Universidade de Sao Paulo, Brazil; Instituto de Medicina Tropical, Faculdade de Medicina, Universidade de Sao Paulo, Brazil.
| | | | - Marcilio Jorge Fumagalli
- Centro de Pesquisa em Virologia, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, Brazil.
| | - Yeh-Li Ho
- Division of Infectious Diseases, Hospital das Clínicas, Faculdade de Medicina, Universidade de Sao Paulo, Brazil.
| | - Camila Alves Maia da Silva
- Department of Infectious Diseases, Faculdade de Medicina, Universidade de Sao Paulo, Brazil; Instituto de Medicina Tropical, Faculdade de Medicina, Universidade de Sao Paulo, Brazil.
| | - Thaís M Coletti
- Department of Infectious Diseases, Faculdade de Medicina, Universidade de Sao Paulo, Brazil; Instituto de Medicina Tropical, Faculdade de Medicina, Universidade de Sao Paulo, Brazil.
| | - Jaqueline Goes de Jesus
- Department of Infectious Diseases, Faculdade de Medicina, Universidade de Sao Paulo, Brazil; Instituto de Medicina Tropical, Faculdade de Medicina, Universidade de Sao Paulo, Brazil.
| | - Camila M Romano
- Department of Infectious Diseases, Faculdade de Medicina, Universidade de Sao Paulo, Brazil; Instituto de Medicina Tropical, Faculdade de Medicina, Universidade de Sao Paulo, Brazil.
| | - Sarah C Hill
- Department of Zoology, University of Oxford, United Kingdom Department of Pathobiology and Population Sciences, The Royal Veterinary College, United Kingdom; Department of Pathobiology and Population Sciences, Royal Veterinary College, Hatfield, United Kingdom.
| | - Oliver Pybus
- Department of Zoology, University of Oxford, United Kingdom.
| | - João Renato Rebello Pinho
- Instituto de Medicina Tropical, Faculdade de Medicina, Universidade de Sao Paulo, Brazil; Hospital Israelita Albert Einstein, São Paulo, SP, Brazil.
| | | | - Yuri R Casal
- Department of Pathology, Faculdade de Medicina, Universidade de Sao Paulo, Brazil.
| | | | | | | | | | - Luiz Tadeu Moraes Figueiredo
- Centro de Pesquisa em Virologia, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, Brazil.
| | - Marisa Dolhnikoff
- Department of Pathology, Faculdade de Medicina, Universidade de Sao Paulo, Brazil.
| | - Nuno R Faria
- Instituto de Medicina Tropical, Faculdade de Medicina, Universidade de Sao Paulo, Brazil; Department of Zoology, University of Oxford, United Kingdom; MRC Centre for Global Infectious Disease Analysis, J-IDEA, Imperial College London, London, United Kingdom.
| | - Ester C Sabino
- Department of Infectious Diseases, Faculdade de Medicina, Universidade de Sao Paulo, Brazil; Instituto de Medicina Tropical, Faculdade de Medicina, Universidade de Sao Paulo, Brazil.
| | | | - Anna S Levin
- Division of Infectious Diseases, Hospital das Clínicas, Faculdade de Medicina, Universidade de Sao Paulo, Brazil; Department of Infectious Diseases, Faculdade de Medicina, Universidade de Sao Paulo, Brazil; Instituto de Medicina Tropical, Faculdade de Medicina, Universidade de Sao Paulo, Brazil; Infection Control Department, Hospital das Clínicas, Faculdade de Medicina, Universidade de Sao Paulo, Brazil.
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23
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Wegner GI, Murray KA, Springmann M, Muller A, Sokolow SH, Saylors K, Morens DM. Averting wildlife-borne infectious disease epidemics requires a focus on socio-ecological drivers and a redesign of the global food system. EClinicalMedicine 2022; 47:101386. [PMID: 35465645 PMCID: PMC9014132 DOI: 10.1016/j.eclinm.2022.101386] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/23/2021] [Revised: 03/14/2022] [Accepted: 03/25/2022] [Indexed: 12/20/2022] Open
Abstract
A debate has emerged over the potential socio-ecological drivers of wildlife-origin zoonotic disease outbreaks and emerging infectious disease (EID) events. This Review explores the extent to which the incidence of wildlife-origin infectious disease outbreaks, which are likely to include devastating pandemics like HIV/AIDS and COVID-19, may be linked to excessive and increasing rates of tropical deforestation for agricultural food production and wild meat hunting and trade, which are further related to contemporary ecological crises such as global warming and mass species extinction. Here we explore a set of precautionary responses to wildlife-origin zoonosis threat, including: (a) limiting human encroachment into tropical wildlands by promoting a global transition to diets low in livestock source foods; (b) containing tropical wild meat hunting and trade by curbing urban wild meat demand, while securing access for indigenous people and local communities in remote subsistence areas; and (c) improving biosecurity and other strategies to break zoonosis transmission pathways at the wildlife-human interface and along animal source food supply chains.
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Affiliation(s)
- Giulia I. Wegner
- Wildlife Conservation Research Unit (WildCRU), Department of Zoology, University of Oxford, Tubney House, Abingdon Road, Tubney, Abingdon OX13 5QL, UK
| | - Kris A. Murray
- MRC Unit the Gambia at London School of Hygiene and Tropical Medicine, Fajara, Gambia
- MRC Centre for Global Infectious Disease Analysis, Department of Infectious Disease Epidemiology, School of Public Health, Imperial College London, UK
| | - Marco Springmann
- Oxford Martin Programme on the Future of Food and Nuffield Department of Population Health, University of Oxford, 34 Broad Street, Oxford OX1 3BD, UK
| | - Adrian Muller
- Department of Environmental Systems Science, ETH, Sonneggstrasse 33, Zürich 8092, Switzerland
- Research Institute of Organic Agriculture FiBL, Ackerstrasse 113, Frick 5070, Switzerland
| | - Susanne H. Sokolow
- Stanford Woods Institute for the Environment, Jerry Yang & Akiko Yamazaki Environment & Energy Building, MC 4205, 473 Via Ortega, Stanford, CA 94305, USA
- Marine Science Institute, University of California, Santa Barbara, CA 93106-6150, USA
| | - Karen Saylors
- Labyrinth Global Health, 15th Ave NE, St Petersburg, FL 33704, USA
| | - David M. Morens
- National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892, USA
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24
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Ng WM, Sahin M, Krumm SA, Seow J, Zeltina A, Harlos K, Paesen GC, Pinschewer DD, Doores KJ, Bowden TA. Contrasting Modes of New World Arenavirus Neutralization by Immunization-Elicited Monoclonal Antibodies. mBio 2022; 13:e0265021. [PMID: 35315691 PMCID: PMC9040744 DOI: 10.1128/mbio.02650-21] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2021] [Accepted: 01/28/2022] [Indexed: 12/31/2022] Open
Abstract
Transmission of the New World hemorrhagic fever arenaviruses Junín virus (JUNV) and Machupo virus (MACV) to humans is facilitated, in part, by the interaction between the arenavirus GP1 glycoprotein and the human transferrin receptor 1 (hTfR1). We utilize a mouse model of live-attenuated immunization with envelope exchange viruses to isolate neutralizing monoclonal antibodies (NAbs) specific to JUNV GP1 and MACV GP1. Structures of two NAbs, termed JUN1 and MAC1, demonstrate that they neutralize through disruption of hTfR1 recognition. JUN1 utilizes a binding mode common to all characterized infection- and vaccine-elicited JUNV-specific NAbs, which involves mimicking hTfR1 binding through the insertion of a tyrosine into the receptor-binding site. In contrast, MAC1 undergoes a tyrosine-mediated mode of antigen recognition distinct from that used by the reported anti-JUNV NAbs and the only other characterized anti-MACV NAb. These data reveal the varied modes of GP1-specific recognition among New World arenaviruses by the antibody-mediated immune response. IMPORTANCE The GP1 subcomponent of the New World arenavirus GP is a primary target of the neutralizing antibody response, which has been shown to be effective in the prevention and treatment of infection. Here, we characterize the structural basis of the antibody-mediated immune response that arises from immunization of mice against Junín virus and Machupo virus, two rodent-borne zoonotic New World arenaviruses. We isolate a panel of GP1-specific monoclonal antibodies that recognize overlapping epitopes and exhibit neutralizing behavior, in vitro. Structural characterization of two of these antibodies indicates that antibody recognition likely interferes with GP1-mediated recognition of the transferrin receptor 1. These data provide molecular-level detail for a key region of vulnerability on the New World arenavirus surface and a blueprint for therapeutic antibody development.
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Affiliation(s)
- Weng M. Ng
- Division of Structural Biology, Wellcome Centre for Human Genetics, University of Oxford, Oxford, United Kingdom
| | - Mehmet Sahin
- Department of Biomedicine, Division of Experimental Virology, University of Basel, Basel, Switzerland
| | - Stefanie A. Krumm
- Kings College London, Department of Infectious Diseases, Guy’s Hospital, London, United Kingdom
| | - Jeffrey Seow
- Kings College London, Department of Infectious Diseases, Guy’s Hospital, London, United Kingdom
| | - Antra Zeltina
- Division of Structural Biology, Wellcome Centre for Human Genetics, University of Oxford, Oxford, United Kingdom
| | - Karl Harlos
- Division of Structural Biology, Wellcome Centre for Human Genetics, University of Oxford, Oxford, United Kingdom
| | - Guido C. Paesen
- Division of Structural Biology, Wellcome Centre for Human Genetics, University of Oxford, Oxford, United Kingdom
| | - Daniel D. Pinschewer
- Department of Biomedicine, Division of Experimental Virology, University of Basel, Basel, Switzerland
| | - Katie J. Doores
- Kings College London, Department of Infectious Diseases, Guy’s Hospital, London, United Kingdom
| | - Thomas A. Bowden
- Division of Structural Biology, Wellcome Centre for Human Genetics, University of Oxford, Oxford, United Kingdom
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25
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Tapia-Ramírez G, Lorenzo C, Navarrete D, Carrillo-Reyes A, Retana Ó, Carrasco-Hernández R. A Review of Mammarenaviruses and Rodent Reservoirs in the Americas. ECOHEALTH 2022; 19:22-39. [PMID: 35247117 PMCID: PMC9090702 DOI: 10.1007/s10393-022-01580-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/06/2021] [Revised: 12/08/2021] [Accepted: 12/09/2021] [Indexed: 06/14/2023]
Abstract
In the Americas, infectious viral diseases caused by viruses of the genus Mammarenavirus have been reported since the 1960s. Such diseases have commonly been associated with land use changes, which favor abundance of generalist rodent species. In the Americas-where the rates of land use change are among the highest worldwide-at least 1326 of all 2277 known rodent species have been reported. We conducted a literature review of studies between 1960 and 2020, to establish the current and historical knowledge about genotypes of mammarenaviruses and their rodent reservoirs in the Americas. Our overall goal was to show the importance of focusing research efforts on the American continent, since the conditions exist for future viral hemorrhagic fever (VHF) outbreaks caused by rodent-borne viruses, in turn, carried by widely distributed rodents. We found 47 species identified down to the species level, and one species identified only down to the genus level (Oryzomys sp.), reported in the Americas as reservoirs of mammarenaviruses, most these are ecological generalists. These species associate with 29 genotypes of Mammarenavirus, seven of which have been linked to VHFs in humans. We also highlight the need to monitor these species, in order to prevent viral disease outbreaks in the region.
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Affiliation(s)
- Gloria Tapia-Ramírez
- Departamento de Conservación de la Biodiversidad, El Colegio de La Frontera Sur, Periférico Sur S/N María Auxiliadora, 29290, San Cristóbal de Las Casas, Chiapas, Mexico.
| | - Consuelo Lorenzo
- Departamento de Conservación de la Biodiversidad, El Colegio de La Frontera Sur, Periférico Sur S/N María Auxiliadora, 29290, San Cristóbal de Las Casas, Chiapas, Mexico
| | - Darío Navarrete
- Departamento de Observación de la Tierra, Atmósfera y Océano, El Colegio de La Frontera Sur, Periférico Sur S/N María Auxiliadora, 29290, San Cristóbal de Las Casas, Chiapas, Mexico
| | - Arturo Carrillo-Reyes
- Facultad de Ingeniería, Universidad de Ciencias y Artes de Chiapas, Av 1a. Sur Pte 1460, C.P., 29000, Tuxtla Gutiérrez, Chiapas, Mexico
| | - Óscar Retana
- Centro de Estudios en Desarrollo Sustentable, Universidad Autónoma de Campeche, Avenida Héroe de Nacozari 480, C.P., 24079, San Francisco de Campeche, Campeche, Mexico
| | - Rocío Carrasco-Hernández
- Centro de Investigación en Enfermedades Infecciosas, Instituto Nacional de Enfermedades Respiratorias, Ismael Cosío Villegas, Calz. de Tlalpan 4502, C. P., 14080, Ciudad de México, Mexico
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26
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Hickerson BT, Daniels-Wells TR, Payes C, Clark LE, Candelaria PV, Bailey KW, Sefing EJ, Zink S, Ziegenbein J, Abraham J, Helguera G, Penichet ML, Gowen BB. Host receptor-targeted therapeutic approach to counter pathogenic New World mammarenavirus infections. Nat Commun 2022; 13:558. [PMID: 35091550 PMCID: PMC8799657 DOI: 10.1038/s41467-021-27949-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2020] [Accepted: 12/22/2021] [Indexed: 12/25/2022] Open
Abstract
Five New World mammarenaviruses (NWMs) cause life-threatening hemorrhagic fever (HF). Cellular entry by these viruses is mediated by human transferrin receptor 1 (hTfR1). Here, we demonstrate that an antibody (ch128.1/IgG1) which binds the apical domain of hTfR1, potently inhibits infection of attenuated and pathogenic NWMs in vitro. Computational docking of the antibody Fab crystal structure onto the known structure of hTfR1 shows an overlapping receptor-binding region shared by the Fab and the viral envelope glycoprotein GP1 subunit that binds hTfR1, and we demonstrate competitive inhibition of NWM GP1 binding by ch128.1/IgG1 as the principal mechanism of action. Importantly, ch128.1/IgG1 protects hTfR1-expressing transgenic mice against lethal NWM challenge. Additionally, the antibody is well-tolerated and only partially reduces ferritin uptake. Our findings provide the basis for the development of a novel, host receptor-targeted antibody therapeutic broadly applicable to the treatment of HF of NWM etiology.
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MESH Headings
- A549 Cells
- Animals
- Antibodies, Monoclonal/immunology
- Antibodies, Monoclonal/metabolism
- Antibodies, Monoclonal/pharmacology
- Antigens, CD/immunology
- Antigens, CD/metabolism
- Arenaviridae/drug effects
- Arenaviridae/metabolism
- Arenaviridae/physiology
- Chlorocebus aethiops
- Hemorrhagic Fever, American/metabolism
- Hemorrhagic Fever, American/prevention & control
- Hemorrhagic Fever, American/virology
- Host-Pathogen Interactions/drug effects
- Humans
- Junin virus/drug effects
- Junin virus/physiology
- Mice, Inbred C57BL
- Mice, Transgenic
- Molecular Docking Simulation
- Protein Binding/drug effects
- Receptors, Transferrin/antagonists & inhibitors
- Receptors, Transferrin/immunology
- Receptors, Transferrin/metabolism
- Vero Cells
- Viral Envelope Proteins/metabolism
- Mice
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Affiliation(s)
- Brady T Hickerson
- Department of Animal, Dairy and Veterinary Sciences, Utah State University, Logan, UT, USA
- Division of Biotechnology Review and Research-III, Office of Biotechnology Products, Center for Drug Evaluation and Research, Food and Drug Administration, Silver Spring, MD, USA
| | - Tracy R Daniels-Wells
- Division of Surgical Oncology, Department of Surgery, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA
| | - Cristian Payes
- Instituto de Biología y Medicina Experimental (IBYME CONICET), Buenos Aires, Argentina
| | - Lars E Clark
- Department of Microbiology, Blavatnik Institute, Harvard Medical School, Boston, MA, USA
| | - Pierre V Candelaria
- Division of Surgical Oncology, Department of Surgery, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA
| | - Kevin W Bailey
- Department of Animal, Dairy and Veterinary Sciences, Utah State University, Logan, UT, USA
| | - Eric J Sefing
- Department of Animal, Dairy and Veterinary Sciences, Utah State University, Logan, UT, USA
| | - Samantha Zink
- Department of Chemistry and Biochemistry, University of California, Los Angeles (UCLA), Los Angeles, CA, USA
| | - James Ziegenbein
- Department of Chemistry and Biochemistry, University of California, Los Angeles (UCLA), Los Angeles, CA, USA
| | - Jonathan Abraham
- Department of Microbiology, Blavatnik Institute, Harvard Medical School, Boston, MA, USA
- Department of Medicine, Division of Infectious Diseases, Brigham and Women's Hospital, Boston, MA, USA
| | - Gustavo Helguera
- Instituto de Biología y Medicina Experimental (IBYME CONICET), Buenos Aires, Argentina.
- Department of Chemistry and Biochemistry, University of California, Los Angeles (UCLA), Los Angeles, CA, USA.
| | - Manuel L Penichet
- Division of Surgical Oncology, Department of Surgery, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA.
- Department of Microbiology, Immunology and Molecular Genetics, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA.
- UCLA Molecular Biology Institute, Los Angeles, CA, USA.
- UCLA Jonsson Comprehensive Cancer Center, Los Angeles, CA, USA.
- UCLA AIDS Institute, Los Angeles, CA, USA.
| | - Brian B Gowen
- Department of Animal, Dairy and Veterinary Sciences, Utah State University, Logan, UT, USA.
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Roman-Sosa G, Leske A, Ficht X, Dau TH, Holzerland J, Hoenen T, Beer M, Kammerer R, Schirmbeck R, Rey FA, Cordo SM, Groseth A. Immunization with GP1 but Not Core-like Particles Displaying Isolated Receptor-Binding Epitopes Elicits Virus-Neutralizing Antibodies against Junín Virus. Vaccines (Basel) 2022; 10:vaccines10020173. [PMID: 35214632 PMCID: PMC8874384 DOI: 10.3390/vaccines10020173] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2021] [Revised: 01/18/2022] [Accepted: 01/19/2022] [Indexed: 02/01/2023] Open
Abstract
New World arenaviruses are rodent-transmitted viruses and include a number of pathogens that are responsible for causing severe human disease. This includes Junín virus (JUNV), which is the causative agent of Argentine hemorrhagic fever. The wild nature and mobility of the rodent reservoir host makes it difficult to control the disease, and currently passive immunization with high-titer neutralizing antibody-containing plasma from convalescent patients is the only specific therapy. However, dwindling supplies of naturally available convalescent plasma, and challenges in developing similar resources for other closely related viruses, have made the development of alternative antibody-based therapeutic approaches of critical importance. In this study, we sought to induce a neutralizing antibody response in rabbits against the receptor-binding subunit of the viral glycoprotein, GP1, and the specific peptide sequences in GP1 involved in cellular receptor contacts. While these specific receptor-interacting peptides did not efficiently induce the production of neutralizing antibodies when delivered as a particulate antigen (as part of hepatitis B virus core-like particles), we showed that recombinant JUNV GP1 purified from transfected mammalian cells induced virus-neutralizing antibodies at high titers in rabbits. Further, neutralization was observed across a range of unrelated JUNV strains, a feature that is critical for effectiveness in the field. These results underscore the potential of GP1 alone to induce a potent neutralizing antibody response and highlight the importance of epitope presentation. In addition, effective virus neutralization by rabbit antibodies supports the potential applicability of this species for the future development of immunotherapeutics (e.g., based on humanized monoclonal antibodies). Such information can be applied in the design of vaccines and immunogens for both prevention and specific therapies against this and likely also other closely related pathogenic New World arenaviruses.
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Affiliation(s)
- Gleyder Roman-Sosa
- Department of Internal Medicine I, Ulm University Hospital, 89081 Ulm, Germany; (X.F.); (R.S.)
- Correspondence: (G.R.-S.); (A.G.)
| | - Anne Leske
- Laboratory for Arenavirus Biology, Institute of Molecular Virology and Cell Biology, Friedrich-Loeffler-Institut, 17493 Greifswald, Germany; (A.L.); (J.H.)
| | - Xenia Ficht
- Department of Internal Medicine I, Ulm University Hospital, 89081 Ulm, Germany; (X.F.); (R.S.)
| | - Tung Huy Dau
- Laboratory for Immunogenetics, Institute of Immunology, Friedrich-Loeffler-Institut, 17493 Greifswald, Germany; (T.H.D.); (R.K.)
| | - Julia Holzerland
- Laboratory for Arenavirus Biology, Institute of Molecular Virology and Cell Biology, Friedrich-Loeffler-Institut, 17493 Greifswald, Germany; (A.L.); (J.H.)
| | - Thomas Hoenen
- Laboratory for Integrative Cell and Infection Biology, Institute of Molecular Virology and Cell Biology, Friedrich-Loeffler-Institut, 17493 Greifswald, Germany;
| | - Martin Beer
- National and OIE Reference Laboratory for BHV-1, Institute of Diagnostic Virology, Friedrich-Loeffler-Institut, 17493 Greifswald, Germany;
| | - Robert Kammerer
- Laboratory for Immunogenetics, Institute of Immunology, Friedrich-Loeffler-Institut, 17493 Greifswald, Germany; (T.H.D.); (R.K.)
| | - Reinhold Schirmbeck
- Department of Internal Medicine I, Ulm University Hospital, 89081 Ulm, Germany; (X.F.); (R.S.)
| | - Felix A. Rey
- Structural Virology Unit, CNRS UMR3569, Institut Pasteur, Université de Paris, 75015 Paris, France;
| | - Sandra M. Cordo
- Instituto de Química Biológica de la Facultad de Ciencias Exactas y Naturales (IQUIBICEN), University of Buenos Aires, Ciudad Universitaria, Pabellón II, Piso 4, Buenos Aires 1428, Argentina;
| | - Allison Groseth
- Laboratory for Arenavirus Biology, Institute of Molecular Virology and Cell Biology, Friedrich-Loeffler-Institut, 17493 Greifswald, Germany; (A.L.); (J.H.)
- Correspondence: (G.R.-S.); (A.G.)
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28
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Malhotra H, Kumar A. Codon usage signatures in Sabia and Chapare for host adaptation. Bioinformation 2021; 17:891-898. [PMID: 35574503 PMCID: PMC9070627 DOI: 10.6026/97320630017891] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2021] [Revised: 10/16/2021] [Accepted: 10/16/2021] [Indexed: 11/23/2022] Open
Abstract
Sabia and Chapare viruses in the Arenavirus family cause viral hemorrhagic fever among humans with a fatality rate of 30% with no treatment models. Therefore, it is of interest to document the codon usage, amino acid patterns and associated factors influencing the observed variations in Sabia and Chapare viruses for host adaptation. Multivariate statistical analysis revealed compositional constraint and host selection pressure influencing the viral codon usage patterns. These data suggests the codon usage signatures in Sabia and Chapare viruses for host adaptation in the human host implying its role in the rapid progression of the infection. Dinucleotides UpG and CpA were noted to be over-represented among the Sabia, Chapare viruses and human genomes. Strong restraint from the usage of CpG dinucleotides among viruses is linked with the molecular mimicry of the human immune system. Thus, the data reported from this study help in understanding the mechanism of viral adaptation inside the host genome for further consideration in drug discovery.
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Affiliation(s)
- Himani Malhotra
- Department of Biotechnology, School of Bioengineering and Biosciences, Lovely Professional University, Jalandhar Delhi G.T. Road, Phagwara, Punjab, INDIA -144411
| | - Arvind Kumar
- Department of Biochemistry, School of Bioengineering and Biosciences, Lovely Professional University, Jalandhar Delhi G.T. Road, Phagwara, Punjab, INDIA -144411
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29
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Abstract
Arenaviruses initiate infection by delivering a transcriptionally competent ribonucleoprotein (RNP) complex into the cytosol of host cells. The arenavirus RNP consists of the large (L) RNA-dependent RNA polymerase (RdRP) bound to a nucleoprotein (NP)-encapsidated genomic RNA (viral RNA [vRNA]) template. During transcription and replication, L must transiently displace RNA-bound NP to allow for template access into the RdRP active site. Concomitant with RNA replication, new subunits of NP must be added to the nascent complementary RNAs (cRNA) as they emerge from the product exit channel of L. Interactions between L and NP thus play a central role in arenavirus gene expression. We developed an approach to purify recombinant functional RNPs from mammalian cells in culture using a synthetic vRNA and affinity-tagged L and NP. Negative-stain electron microscopy of purified RNPs revealed they adopt diverse and flexible structures, like RNPs of other Bunyavirales members. Monodispersed L-NP and trimeric ring-like NP complexes were also obtained in excess of flexible RNPs, suggesting that these heterodimeric structures self-assemble in the absence of suitable RNA templates. This work allows for further biochemical analysis of the interaction between arenavirus L and NP proteins and provides a framework for future high-resolution structural analyses of this replication-associated complex. IMPORTANCE Arenaviruses are rodent-borne pathogens that can cause severe disease in humans. All arenaviruses begin the infection cycle with delivery of the virus replication machinery into the cytoplasm of the host cell. This machinery consists of an RNA-dependent RNA polymerase-which copies the viral genome segments and synthesizes all four viral mRNAs-bound to the two nucleoprotein-encapsidated genomic RNAs. How this complex assembles remains a mystery. Our findings provide direct evidence for the formation of diverse intracellular arenavirus replication complexes using purification strategies for the polymerase, nucleoprotein, and genomic RNA of Machupo virus, which causes Bolivian hemorrhagic fever in humans. We demonstrate that the polymerase and nucleoprotein assemble into higher-order structures within cells, providing a model for the molecular events of arenavirus RNA synthesis. These findings provide a framework for probing the architectures and functions of the arenavirus replication machinery and thus advancing antiviral strategies targeting this essential complex.
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Structure of Machupo virus polymerase in complex with matrix protein Z. Nat Commun 2021; 12:6163. [PMID: 34697302 PMCID: PMC8546121 DOI: 10.1038/s41467-021-26432-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2021] [Accepted: 10/05/2021] [Indexed: 11/16/2022] Open
Abstract
The Arenaviridae family includes several viruses that cause severe human hemorrhagic fevers with high mortality, with no effective countermeasures currently available. The arenavirus multi-domain L protein is involved in viral transcription and replication and represents a promising target for antiviral drugs. The arenavirus matrix protein Z is a small multi-functional protein that inhibits the activities of the L protein. Here we report the structure of Machupo virus L protein in complex with Z determined by cryo-electron microscopy. The Z protein acts as a staple and binds the L protein with 1:1 stoichiometry at the intersection between the PA-C-like region, RNA-dependent RNA polymerase and PB2-N-like region. Binding of the Z protein may lock the multiple domains of L into a fixed arrangement leading to loss of catalytic activity. These results further our understanding of the inhibitory mechanism of arenavirus replication machinery and provide a novel perspective to develop antiviral drugs. The RNA polymerase L of arenaviruses is of interest for drug design and its activity is inhibited by the matrix protein Z. Here, the authors present the cryo-EM structure of the Machupo virus polymerase L in complex with matrix protein Z and discuss the inhibitory mechanism.
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31
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The Input of Structural Vaccinology in the Search for Vaccines against Bunyaviruses. Viruses 2021; 13:v13091766. [PMID: 34578349 PMCID: PMC8473429 DOI: 10.3390/v13091766] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2021] [Revised: 08/22/2021] [Accepted: 08/28/2021] [Indexed: 11/26/2022] Open
Abstract
A significant increase in the number of viruses causing unexpected illnesses and epidemics among humans, wildlife and livestock has been observed in recent years. These new or re-emerging viruses have often caught the scientific community off-guard, without sufficient knowledge to combat them, as shown by the current coronavirus pandemic. The bunyaviruses, together with the flaviviruses and filoviruses, are the major etiological agents of viral hemorrhagic fever, and several of them have been listed as priority pathogens by the World Health Organization for which insufficient countermeasures exist. Based on new techniques allowing rapid analysis of the repertoire of protective antibodies induced during infection, combined with atomic-level structural information on viral surface proteins, structural vaccinology is now instrumental in the combat against newly emerging threats, as it allows rapid rational design of novel vaccine antigens. Here, we discuss the contribution of structural vaccinology and the current challenges that remain in the search for an efficient vaccine against some of the deadliest bunyaviruses.
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32
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CP100356 Hydrochloride, a P-Glycoprotein Inhibitor, Inhibits Lassa Virus Entry: Implication of a Candidate Pan-Mammarenavirus Entry Inhibitor. Viruses 2021; 13:v13091763. [PMID: 34578344 PMCID: PMC8473031 DOI: 10.3390/v13091763] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2021] [Revised: 08/30/2021] [Accepted: 08/31/2021] [Indexed: 11/20/2022] Open
Abstract
Lassa virus (LASV)—a member of the family Arenaviridae—causes Lassa fever in humans and is endemic in West Africa. Currently, no approved drugs are available. We screened 2480 small compounds for their potential antiviral activity using pseudotyped vesicular stomatitis virus harboring the LASV glycoprotein (VSV-LASVGP) and a related prototypic arenavirus, lymphocytic choriomeningitis virus (LCMV). Follow-up studies confirmed that CP100356 hydrochloride (CP100356), a specific P-glycoprotein (P-gp) inhibitor, suppressed VSV-LASVGP, LCMV, and LASV infection with half maximal inhibitory concentrations of 0.52, 0.54, and 0.062 μM, respectively, without significant cytotoxicity. Although CP100356 did not block receptor binding at the cell surface, it inhibited low-pH-dependent membrane fusion mediated by arenavirus glycoproteins. P-gp downregulation did not cause a significant reduction in either VSV-LASVGP or LCMV infection, suggesting that P-gp itself is unlikely to be involved in arenavirus entry. Finally, our data also indicate that CP100356 inhibits the infection by other mammarenaviruses. Thus, our findings suggest that CP100356 can be considered as an effective virus entry inhibitor for LASV and other highly pathogenic mammarenaviruses.
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33
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Chen J, Wang J, Zhang J, Ly H. Advances in Development and Application of Influenza Vaccines. Front Immunol 2021; 12:711997. [PMID: 34326849 PMCID: PMC8313855 DOI: 10.3389/fimmu.2021.711997] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2021] [Accepted: 06/24/2021] [Indexed: 12/24/2022] Open
Abstract
Influenza A virus is one of the most important zoonotic pathogens that can cause severe symptoms and has the potential to cause high number of deaths and great economic loss. Vaccination is still the best option to prevent influenza virus infection. Different types of influenza vaccines, including live attenuated virus vaccines, inactivated whole virus vaccines, virosome vaccines, split-virion vaccines and subunit vaccines have been developed. However, they have several limitations, such as the relatively high manufacturing cost and long production time, moderate efficacy of some of the vaccines in certain populations, and lack of cross-reactivity. These are some of the problems that need to be solved. Here, we summarized recent advances in the development and application of different types of influenza vaccines, including the recent development of viral vectored influenza vaccines. We also described the construction of other vaccines that are based on recombinant influenza viruses as viral vectors. Information provided in this review article might lead to the development of safe and highly effective novel influenza vaccines.
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Affiliation(s)
- Jidang Chen
- School of Life Science and Engineering, Foshan University, Foshan, China
| | - Jiehuang Wang
- School of Life Science and Engineering, Foshan University, Foshan, China
| | - Jipei Zhang
- School of Life Science and Engineering, Foshan University, Foshan, China
| | - Hinh Ly
- Department of Veterinary & Biomedical Sciences, University of Minnesota, Twin Cities, MN, United States
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34
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Gowen BB, Naik S, Westover JB, Brown ER, Gantla VR, Fetsko A, Dagley AL, Blotter DJ, Anderson N, McCormack K, Henkel G. Potent inhibition of arenavirus infection by a novel fusion inhibitor. Antiviral Res 2021; 193:105125. [PMID: 34197863 DOI: 10.1016/j.antiviral.2021.105125] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2021] [Revised: 06/22/2021] [Accepted: 06/27/2021] [Indexed: 11/17/2022]
Abstract
Several arenaviruses, including Lassa and Lujo viruses in Africa and five New World arenavirus (NWA) species in the Americas, cause life-threatening viral hemorrhagic fevers. In the absence of licensed antiviral therapies, these viruses pose a significant public health risk. The envelope glycoprotein complex (GPC) mediates arenavirus entry through a pH-dependent fusion of the viral and host endosomal membranes. It thus is recognized as a viable target for small-molecule fusion inhibitors. Here, we report on the antiviral activity and pre-clinical development of the novel broad-spectrum arenavirus fusion inhibitors, ARN-75039 and ARN-75041. In Tacaribe virus (TCRV) pseudotyped and native virus assays, the ARN compounds were active in the low to sub-nanomolar range with selectivity indices exceeding 1000. Pharmacokinetic analysis of the orally administered compounds revealed an extended half-life in mice supporting once-daily dosing, and the compounds were well tolerated at the highest tested dose of 100 mg/kg. In a proof-of-concept prophylactic efficacy study, doses of 10 and 35 mg/kg of either compound dramatically improved survival outcome and potently inhibited TCRV replication in serum and various tissues. Additionally, in contrast to surviving mice that received ribavirin or placebo, animals treated with ARN-75039 or ARN-75041 were cured of TCRV infection. In a follow-up study with ARN-75039, impressive therapeutic efficacy was demonstrated under conditions where treatment was withheld until after the onset of disease. Taken together, the data strongly support the continued development of ARN-75039 as a candidate therapeutic for the treatment of severe arenaviral diseases.
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Affiliation(s)
- Brian B Gowen
- Department of Animal, Dairy and Veterinary Sciences, Utah State University, Logan, UT, USA.
| | | | - Jonna B Westover
- Department of Animal, Dairy and Veterinary Sciences, Utah State University, Logan, UT, USA
| | | | | | | | - Ashley L Dagley
- Department of Animal, Dairy and Veterinary Sciences, Utah State University, Logan, UT, USA
| | - Dallan J Blotter
- Department of Animal, Dairy and Veterinary Sciences, Utah State University, Logan, UT, USA
| | - Nicole Anderson
- Department of Animal, Dairy and Veterinary Sciences, Utah State University, Logan, UT, USA
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35
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Sarute N, Ross SR. The board is set, the pieces are moving: Modulation of New World arenavirus entry by host proteins. PLoS Pathog 2021; 17:e1009605. [PMID: 34111222 PMCID: PMC8191888 DOI: 10.1371/journal.ppat.1009605] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Affiliation(s)
- Nicolás Sarute
- Department of Microbiology and Immunology, University of Illinois at Chicago, College of Medicine, Chicago, Illinois, United States of America
| | - Susan R. Ross
- Department of Microbiology and Immunology, University of Illinois at Chicago, College of Medicine, Chicago, Illinois, United States of America
- * E-mail:
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36
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Laporta GZ, Ilacqua RC, Bergo ES, Chaves LSM, Rodovalho SR, Moresco GG, Figueira EAG, Massad E, de Oliveira TMP, Bickersmith SA, Conn JE, Sallum MAM. Malaria transmission in landscapes with varying deforestation levels and timelines in the Amazon: a longitudinal spatiotemporal study. Sci Rep 2021; 11:6477. [PMID: 33742028 PMCID: PMC7979798 DOI: 10.1038/s41598-021-85890-3] [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: 09/24/2020] [Accepted: 03/08/2021] [Indexed: 01/31/2023] Open
Abstract
The relationship between deforestation and malaria is a spatiotemporal process of variation in Plasmodium incidence in human-dominated Amazonian rural environments. The present study aimed to assess the underlying mechanisms of malarial exposure risk at a fine scale in 5-km2 sites across the Brazilian Amazon, using field-collected data with a longitudinal spatiotemporally structured approach. Anopheline mosquitoes were sampled from 80 sites to investigate the Plasmodium infection rate in mosquito communities and to estimate the malaria exposure risk in rural landscapes. The remaining amount of forest cover (accumulated deforestation) and the deforestation timeline were estimated in each site to represent the main parameters of both the frontier malaria hypothesis and an alternate scenario, the deforestation-malaria hypothesis, proposed herein. The maximum frequency of pathogenic sites occurred at the intermediate forest cover level (50% of accumulated deforestation) at two temporal deforestation peaks, e.g., 10 and 35 years after the beginning of the organization of a settlement. The incidence density of infected anophelines in sites where the original forest cover decreased by more than 50% in the first 25 years of settlement development was at least twice as high as the incidence density calculated for the other sites studied (adjusted incidence density ratio = 2.25; 95% CI, 1.38-3.68; p = 0.001). The results of this study support the frontier malaria as a unifying hypothesis for explaining malaria emergence and for designing specific control interventions in the Brazilian Amazon.
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Affiliation(s)
- Gabriel Z Laporta
- Setor de Pós-Graduação, Pesquisa e Inovação, Centro Universitário Saúde ABC (FMABC), Fundação ABC, Santo André, SP, Brazil.
| | - Roberto C Ilacqua
- Setor de Pós-Graduação, Pesquisa e Inovação, Centro Universitário Saúde ABC (FMABC), Fundação ABC, Santo André, SP, Brazil
| | - Eduardo S Bergo
- Superintendência de Controle de Endemias (SUCEN), Secretaria de Estado da Saúde de São Paulo, Araraquara, SP, Brazil
| | - Leonardo S M Chaves
- Departamento de Epidemiologia, Faculdade de Saúde Pública, Universidade de São Paulo (FSP-USP), São Paulo, SP, Brazil
| | - Sheila R Rodovalho
- Unidade Técnica de Doenças Transmissíveis e Análise de Situação em Saúde, Pan American Health Organization (PAHO/WHO), Brasília, DF, Brazil
| | - Gilberto G Moresco
- Coordenação-Geral de Vigilância de Zoonoses e Doenças de Transmissão Vetorial, Secretaria de Vigilância em Saúde, Ministério da Saúde (MS), Brasília, DF, Brazil
| | | | - Eduardo Massad
- Escola de Matemática Aplicada, Fundação Getúlio Vargas, Rio de Janeiro, RJ, Brazil
| | - Tatiane M P de Oliveira
- Departamento de Epidemiologia, Faculdade de Saúde Pública, Universidade de São Paulo (FSP-USP), São Paulo, SP, Brazil
| | - Sara A Bickersmith
- New York State Department of Health, The Wadsworth Center, Slingerlands, NY, USA
| | - Jan E Conn
- New York State Department of Health, The Wadsworth Center, Slingerlands, NY, USA
- Department of Biomedical Sciences, School of Public Health, State University of New York, Albany, NY, USA
| | - Maria Anice M Sallum
- Departamento de Epidemiologia, Faculdade de Saúde Pública, Universidade de São Paulo (FSP-USP), São Paulo, SP, Brazil.
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37
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Frank MG, Beitscher A, Webb CM, Raabe V. South American Hemorrhagic Fevers: A summary for clinicians. Int J Infect Dis 2021; 105:505-515. [PMID: 33610781 DOI: 10.1016/j.ijid.2021.02.046] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2020] [Revised: 02/08/2021] [Accepted: 02/10/2021] [Indexed: 11/18/2022] Open
Abstract
OBJECTIVES This article is one of a series on acute, severe diseases of humans caused by emerging viruses for which there are no or limited licensed medical countermeasures. We approached this summary on South American Hemorrhagic Fevers (SAHF) from a clinical perspective that focuses on pathogenesis, clinical features, and diagnostics with an emphasis on therapies and vaccines that have demonstrated potential for use in an emergency situation through their evaluation in nonhuman primates (NHPs) and/or in humans. METHODS A standardized literature review was conducted on the clinical, pathological, vaccine, and treatment factors for SAHF as a group and for each individual virus/disease. RESULTS We identified 2 treatments and 1 vaccine platform that have demonstrated potential benefit for treating or preventing infection in humans and 4 other potential treatments currently under investigation. CONCLUSION We provide succinct summaries of these countermeasures to give the busy clinician a head start in reviewing the literature if faced with a patient with South American Hemorrhagic Fever. We also provide links to other authoritative sources of information.
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Affiliation(s)
- Maria G Frank
- Denver Health and Hospital Authority, Denver, CO, United States.
| | - Adam Beitscher
- Denver Health and Hospital Authority, Denver, CO, United States.
| | - Camille M Webb
- University of Texas Medical Branch, Galveston, TX, United States.
| | - Vanessa Raabe
- New York University Grossman School of Medicine, New York, NY, United States.
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Moreno H, Rastrojo A, Pryce R, Fedeli C, Zimmer G, Bowden TA, Gerold G, Kunz S. A novel circulating tamiami mammarenavirus shows potential for zoonotic spillover. PLoS Negl Trop Dis 2020; 14:e0009004. [PMID: 33370288 PMCID: PMC7794035 DOI: 10.1371/journal.pntd.0009004] [Citation(s) in RCA: 4] [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: 07/09/2020] [Revised: 01/08/2021] [Accepted: 11/23/2020] [Indexed: 11/18/2022] Open
Abstract
A detailed understanding of the mechanisms underlying the capacity of a virus to break the species barrier is crucial for pathogen surveillance and control. New World (NW) mammarenaviruses constitute a diverse group of rodent-borne pathogens that includes several causative agents of severe viral hemorrhagic fever in humans. The ability of the NW mammarenaviral attachment glycoprotein (GP) to utilize human transferrin receptor 1 (hTfR1) as a primary entry receptor plays a key role in dictating zoonotic potential. The recent isolation of Tacaribe and lymphocytic choriominingitis mammarenaviruses from host-seeking ticks provided evidence for the presence of mammarenaviruses in arthropods, which are established vectors for numerous other viral pathogens. Here, using next generation sequencing to search for other mammarenaviruses in ticks, we identified a novel replication-competent strain of the NW mammarenavirus Tamiami (TAMV-FL), which we found capable of utilizing hTfR1 to enter mammalian cells. During isolation through serial passaging in mammalian immunocompetent cells, the quasispecies of TAMV-FL acquired and enriched mutations leading to the amino acid changes N151K and D156N, within GP. Cell entry studies revealed that both substitutions, N151K and D156N, increased dependence of the virus on hTfR1 and binding to heparan sulfate proteoglycans. Moreover, we show that the substituted residues likely map to the sterically constrained trimeric axis of GP, and facilitate viral fusion at a lower pH, resulting in viral egress from later endosomal compartments. In summary, we identify and characterize a naturally occurring TAMV strain (TAMV-FL) within ticks that is able to utilize hTfR1. The TAMV-FL significantly diverged from previous TAMV isolates, demonstrating that TAMV quasispecies exhibit striking genetic plasticity that may facilitate zoonotic spillover and rapid adaptation to new hosts. Mammarenaviruses include emergent pathogens responsible of severe disease in humans in zoonotic events. The ability to use the human Transferrin receptor 1 (hTfR1) strongly correlates with their pathogenicity in humans. We isolated a new infectious Tamiami virus strain (TAMV-FL) from host-seeking ticks, which, contrary to the previous rodent-derived reference strain, can use hTfR1 to enter human cells. Moreover, serial passaging of TAMV-FL in human immunocompetent cells selected for two substitutions in the viral envelope glycoprotein: N151K and D156N. These substitutions increase the ability to highjack hTfR1 and the binding capacity to heparan sulfate proteoglycans and cause delayed endosomal escape. Our findings provide insight into the acquisition of novel traits by currently circulating TAMV that increase its potential to trespass the inter-species barrier.
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Affiliation(s)
- Hector Moreno
- Institute of Microbiology, Lausanne University Hospital (IMUL-CHUV), Lausanne, Switzerland
- * E-mail:
| | - Alberto Rastrojo
- Department of Virology and Microbiology, Centro de Biología Molecular Severo Ochoa (CBMSO-CSIC), Madrid, Spain
- Genetic Unit, Department of Biology, Universidad Autónoma de Madrid, Madrid, Spain
| | - Rhys Pryce
- Division of Structural Biology, Wellcome Centre for Human Genetics, University of Oxford, Roosevelt Drive, Oxford, United Kingdom
| | - Chiara Fedeli
- Institute of Microbiology, Lausanne University Hospital (IMUL-CHUV), Lausanne, Switzerland
| | - Gert Zimmer
- Institute of Virology and Immunology (IVI), Mittelhäusern, Switzerland
- Department of Infectious Diseases and Pathobiology (DIP), Vetsuisse Faculty, University of Bern, Bern, Switzerland
| | - Thomas A. Bowden
- Division of Structural Biology, Wellcome Centre for Human Genetics, University of Oxford, Roosevelt Drive, Oxford, United Kingdom
| | - Gisa Gerold
- TWINCORE -Center for Experimental and Clinical Infection Research, Institute for Experimental Virology, Hannover, Germany
- Department of Clinical Microbiology, Virology & Wallenberg Centre for Molecular Medicine (WCMM), Umeå University, Umeå, Sweden
- Department of Biochemistry, University of Veterinary Medicine Hannover, Hannover Germany
| | - Stefan Kunz
- Institute of Microbiology, Lausanne University Hospital (IMUL-CHUV), Lausanne, Switzerland
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Asadi S, Gaaloul ben Hnia N, Barre RS, Wexler AS, Ristenpart WD, Bouvier NM. Influenza A virus is transmissible via aerosolized fomites. Nat Commun 2020; 11:4062. [PMID: 32811826 PMCID: PMC7435178 DOI: 10.1038/s41467-020-17888-w] [Citation(s) in RCA: 62] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2020] [Accepted: 07/22/2020] [Indexed: 02/02/2023] Open
Abstract
Influenza viruses are presumed, but not conclusively known, to spread among humans by several possible routes. We provide evidence of a mode of transmission seldom considered for influenza: airborne virus transport on microscopic particles called "aerosolized fomites." In the guinea pig model of influenza virus transmission, we show that the airborne particulates produced by infected animals are mainly non-respiratory in origin. Surprisingly, we find that an uninfected, virus-immune guinea pig whose body is contaminated with influenza virus can transmit the virus through the air to a susceptible partner in a separate cage. We further demonstrate that aerosolized fomites can be generated from inanimate objects, such as by manually rubbing a paper tissue contaminated with influenza virus. Our data suggest that aerosolized fomites may contribute to influenza virus transmission in animal models of human influenza, if not among humans themselves, with important but understudied implications for public health.
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Affiliation(s)
- Sima Asadi
- grid.27860.3b0000 0004 1936 9684Department of Chemical Engineering, University of California Davis, One Shields Ave., Davis, CA 95616 USA
| | - Nassima Gaaloul ben Hnia
- grid.59734.3c0000 0001 0670 2351Department of Microbiology, Icahn School of Medicine at Mount Sinai, 1 Gustave L. Levy Place, New York, NY 10029 USA
| | - Ramya S. Barre
- grid.59734.3c0000 0001 0670 2351Department of Microbiology, Icahn School of Medicine at Mount Sinai, 1 Gustave L. Levy Place, New York, NY 10029 USA ,grid.16750.350000 0001 2097 5006Present Address: Department of Ecology and Evolutionary Biology, 304 Guyot Hall, Princeton University, Princeton, NJ 08544 USA
| | - Anthony S. Wexler
- grid.27860.3b0000 0004 1936 9684Department of Mechanical and Aerospace Engineering, University of California Davis, One Shields Ave., Davis, CA 95616 USA ,grid.27860.3b0000 0004 1936 9684Air Quality Research Center, University of California Davis, One Shields Ave., Davis, CA 95616 USA ,grid.27860.3b0000 0004 1936 9684Department of Civil and Environmental Engineering, University of California Davis, One Shields Ave., Davis, CA 95616 USA ,grid.27860.3b0000 0004 1936 9684Department of Land, Air and Water Resources, University of California Davis, One Shields Ave., Davis, CA 95616 USA
| | - William D. Ristenpart
- grid.27860.3b0000 0004 1936 9684Department of Chemical Engineering, University of California Davis, One Shields Ave., Davis, CA 95616 USA
| | - Nicole M. Bouvier
- grid.59734.3c0000 0001 0670 2351Department of Microbiology, Icahn School of Medicine at Mount Sinai, 1 Gustave L. Levy Place, New York, NY 10029 USA ,grid.59734.3c0000 0001 0670 2351Division of Infectious Diseases, Department of Medicine, Icahn School of Medicine at Mount Sinai, 1 Gustave L. Levy Place, New York, NY 10029 USA
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CACNA1S haploinsufficiency confers resistance to New World arenavirus infection. Proc Natl Acad Sci U S A 2020; 117:19497-19506. [PMID: 32719120 DOI: 10.1073/pnas.1920551117] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Understanding the genetics of susceptibility to infectious agents is of great importance to our ability to combat disease. Here, we show that voltage-gated calcium channels (VGCCs) are critical for cellular binding and entry of the New World arenaviruses Junín and Tacaribe virus, suggesting that zoonosis via these receptors could occur. Moreover, we demonstrate that α1s haploinsufficiency renders cells and mice more resistant to infection by these viruses. In addition to being more resistant to infection, haploinsufficient cells and mice required a lower dosage of VGCC antagonists to block infection. These studies underscore the importance of genetic variation in susceptibility to both viruses and pharmaceutics.
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Misumi I, Cook KD, Mitchell JE, Lund MM, Vick SC, Lee RH, Uchimura T, Bergmeier W, Mieczkowski P, Pardo-Manuel de Villena F, Ting JPY, Whitmire JK. Identification of a Locus in Mice that Regulates the Collateral Damage and Lethality of Virus Infection. Cell Rep 2020; 27:1387-1396.e5. [PMID: 31042467 DOI: 10.1016/j.celrep.2019.04.004] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2018] [Revised: 03/10/2019] [Accepted: 03/28/2019] [Indexed: 10/26/2022] Open
Abstract
Arenaviruses can cause severe hemorrhagic disease in humans, which can progress to organ failure and death. The underlying mechanisms causing lethality and person-to-person variation in outcome remain incompletely explained. Herein, we characterize a mouse model that recapitulates many features of pathogenesis observed in humans with arenavirus-induced hemorrhagic disease, including thrombocytopenia, severe vascular leakage, lung edema, and lethality. The susceptibility of congenic B6.PL mice to lymphocytic choriomeningitis virus (LCMV) infection is associated with increased antiviral T cell responses in B6.PL mice compared with C57BL/6 mice and is T cell dependent. Pathogenesis imparted by the causative locus is inherited in a semi-dominant manner in F1 crosses. The locus includes PL-derived sequence variants in both poorly annotated genes and genes known to contribute to immune responses. This model can be used to further interrogate how limited genetic differences in the host can remarkably alter the disease course of viral infection.
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Affiliation(s)
- Ichiro Misumi
- Department of Genetics, UNC-Chapel Hill School of Medicine, Chapel Hill, NC 27599, USA; Department of Microbiology and Immunology, UNC-Chapel Hill School of Medicine, Chapel Hill, NC 27599, USA
| | - Kevin D Cook
- Department of Genetics, UNC-Chapel Hill School of Medicine, Chapel Hill, NC 27599, USA
| | - Joseph E Mitchell
- Department of Genetics, UNC-Chapel Hill School of Medicine, Chapel Hill, NC 27599, USA
| | - Makayla M Lund
- Department of Genetics, UNC-Chapel Hill School of Medicine, Chapel Hill, NC 27599, USA
| | - Sarah C Vick
- Department of Microbiology and Immunology, UNC-Chapel Hill School of Medicine, Chapel Hill, NC 27599, USA
| | - Robert H Lee
- Department of Biochemistry/Biophysics, UNC-Chapel Hill School of Medicine, Chapel Hill, NC 27599, USA
| | - Toru Uchimura
- Department of Microbiology and Immunology, UNC-Chapel Hill School of Medicine, Chapel Hill, NC 27599, USA; Lineberger Comprehensive Cancer Center, UNC-Chapel Hill School of Medicine, Chapel Hill, NC 27599, USA
| | - Wolfgang Bergmeier
- Department of Biochemistry/Biophysics, UNC-Chapel Hill School of Medicine, Chapel Hill, NC 27599, USA
| | - Piotr Mieczkowski
- Department of Genetics, UNC-Chapel Hill School of Medicine, Chapel Hill, NC 27599, USA; Lineberger Comprehensive Cancer Center, UNC-Chapel Hill School of Medicine, Chapel Hill, NC 27599, USA
| | - Fernando Pardo-Manuel de Villena
- Department of Genetics, UNC-Chapel Hill School of Medicine, Chapel Hill, NC 27599, USA; Lineberger Comprehensive Cancer Center, UNC-Chapel Hill School of Medicine, Chapel Hill, NC 27599, USA
| | - Jenny P Y Ting
- Department of Genetics, UNC-Chapel Hill School of Medicine, Chapel Hill, NC 27599, USA; Department of Microbiology and Immunology, UNC-Chapel Hill School of Medicine, Chapel Hill, NC 27599, USA; Lineberger Comprehensive Cancer Center, UNC-Chapel Hill School of Medicine, Chapel Hill, NC 27599, USA
| | - Jason K Whitmire
- Department of Genetics, UNC-Chapel Hill School of Medicine, Chapel Hill, NC 27599, USA; Department of Microbiology and Immunology, UNC-Chapel Hill School of Medicine, Chapel Hill, NC 27599, USA; Lineberger Comprehensive Cancer Center, UNC-Chapel Hill School of Medicine, Chapel Hill, NC 27599, USA.
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Hickerson BT, Sefing EJ, Bailey KW, Van Wettere AJ, Penichet ML, Gowen BB. Type I interferon underlies severe disease associated with Junín virus infection in mice. eLife 2020; 9:55352. [PMID: 32452770 PMCID: PMC7297529 DOI: 10.7554/elife.55352] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2020] [Accepted: 05/25/2020] [Indexed: 12/19/2022] Open
Abstract
Junín virus (JUNV) is one of five New World mammarenaviruses (NWMs) that causes fatal hemorrhagic disease in humans and is the etiological agent of Argentine hemorrhagic fever (AHF). The pathogenesis underlying AHF is poorly understood; however, a prolonged, elevated interferon-α (IFN-α) response is associated with a negative disease outcome. A feature of all NWMs that cause viral hemorrhagic fever is the use of human transferrin receptor 1 (hTfR1) for cellular entry. Here, we show that mice expressing hTfR1 develop a lethal disease course marked by an increase in serum IFN-α concentration when challenged with JUNV. Further, we provide evidence that the type I IFN response is central to the development of severe JUNV disease in hTfR1 mice. Our findings identify hTfR1-mediated entry and the type I IFN response as key factors in the pathogenesis of JUNV infection in mice.
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Affiliation(s)
- Brady T Hickerson
- Department of Animal, Dairy and Veterinary Sciences, Utah State UniversityLoganUnited States
| | - Eric J Sefing
- Department of Animal, Dairy and Veterinary Sciences, Utah State UniversityLoganUnited States
| | - Kevin W Bailey
- Department of Animal, Dairy and Veterinary Sciences, Utah State UniversityLoganUnited States
| | - Arnaud J Van Wettere
- Department of Animal, Dairy and Veterinary Sciences, Utah State UniversityLoganUnited States
- Utah Veterinary Diagnostic Laboratory, Utah State UniversityLoganUnited States
| | - Manuel L Penichet
- Division of Surgical Oncology, Department of Surgery, David Geffen School of Medicine at University of California, Los Angeles (UCLA)Los AngelesUnited States
- Department of Microbiology, Immunology and Molecular Genetics, David Geffen School of Medicine at UCLALos AngelesUnited States
- UCLA Molecular Biology InstituteLos AngelesUnited States
- UCLA Jonsson Comprehensive Cancer CenterLos AngelesUnited States
- UCLA AIDS InstituteLos AngelesUnited States
| | - Brian B Gowen
- Department of Animal, Dairy and Veterinary Sciences, Utah State UniversityLoganUnited States
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Viral Hepatitis and Iron Dysregulation: Molecular Pathways and the Role of Lactoferrin. Molecules 2020; 25:molecules25081997. [PMID: 32344579 PMCID: PMC7221917 DOI: 10.3390/molecules25081997] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2020] [Revised: 04/16/2020] [Accepted: 04/23/2020] [Indexed: 02/06/2023] Open
Abstract
The liver is a frontline immune site specifically designed to check and detect potential pathogens from the bloodstream to maintain a general state of immune hyporesponsiveness. One of the main functions of the liver is the regulation of iron homeostasis. The liver detects changes in systemic iron requirements and can regulate its concentration. Pathological states lead to the dysregulation of iron homeostasis which, in turn, can promote infectious and inflammatory processes. In this context, hepatic viruses deviate hepatocytes' iron metabolism in order to better replicate. Indeed, some viruses are able to alter the expression of iron-related proteins or exploit host receptors to enter inside host cells. Lactoferrin (Lf), a multifunctional iron-binding glycoprotein belonging to the innate immunity, is endowed with potent antiviral activity, mainly related to its ability to block viral entry into host cells by interacting with viral and/or cell surface receptors. Moreover, Lf can act as an iron scavenger by both direct iron-chelation or the modulation of the main iron-related proteins. In this review, the complex interplay between viral hepatitis, iron homeostasis, and inflammation as well as the role of Lf are outlined.
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Criscitiello MF, Kraev I, Lange S. Post-Translational Protein Deimination Signatures in Serum and Serum-Extracellular Vesicles of Bos taurus Reveal Immune, Anti-Pathogenic, Anti-Viral, Metabolic and Cancer-Related Pathways for Deimination. Int J Mol Sci 2020; 21:E2861. [PMID: 32325910 PMCID: PMC7215346 DOI: 10.3390/ijms21082861] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2020] [Revised: 04/15/2020] [Accepted: 04/16/2020] [Indexed: 12/14/2022] Open
Abstract
The bovine immune system is known for its unusual traits relating to immunoglobulin and antiviral responses. Peptidylarginine deiminases (PADs) are phylogenetically conserved enzymes that cause post-translational deimination, contributing to protein moonlighting in health and disease. PADs also regulate extracellular vesicle (EV) release, forming a critical part of cellular communication. As PAD-mediated mechanisms in bovine immunology and physiology remain to be investigated, this study profiled deimination signatures in serum and serum-EVs in Bos taurus. Bos EVs were poly-dispersed in a 70-500 nm size range and showed differences in deiminated protein cargo, compared with whole sera. Key immune, metabolic and gene regulatory proteins were identified to be post-translationally deiminated with some overlapping hits in sera and EVs (e.g., immunoglobulins), while some were unique to either serum or serum-EVs (e.g., histones). Protein-protein interaction network analysis of deiminated proteins revealed KEGG pathways common for serum and serum-EVs, including complement and coagulation cascades, viral infection (enveloped viruses), viral myocarditis, bacterial and parasitic infections, autoimmune disease, immunodeficiency intestinal IgA production, B-cell receptor signalling, natural killer cell mediated cytotoxicity, platelet activation and hematopoiesis, alongside metabolic pathways including ferroptosis, vitamin digestion and absorption, cholesterol metabolism and mineral absorption. KEGG pathways specific to EVs related to HIF-1 signalling, oestrogen signalling and biosynthesis of amino acids. KEGG pathways specific for serum only, related to Epstein-Barr virus infection, transcription mis-regulation in cancer, bladder cancer, Rap1 signalling pathway, calcium signalling pathway and ECM-receptor interaction. This indicates differences in physiological and pathological pathways for deiminated proteins in serum-EVs, compared with serum. Our findings may shed light on pathways underlying a number of pathological and anti-pathogenic (viral, bacterial, parasitic) pathways, with putative translatable value to human pathologies, zoonotic diseases and development of therapies for infections, including anti-viral therapies.
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Affiliation(s)
- Michael F. Criscitiello
- Comparative Immunogenetics Laboratory, Department of Veterinary Pathobiology, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, TX 77843, USA;
- Department of Microbial Pathogenesis and Immunology, College of Medicine, Texas A&M Health Science Center, Texas A&M University, College Station, TX 77843, USA
| | - Igor Kraev
- Electron Microscopy Suite, Faculty of Science, Technology, Engineering and Mathematics, Open University, Milton Keynes MK7 6AA, UK;
| | - Sigrun Lange
- Tissue Architecture and Regeneration Research Group, School of Life Sciences, University of Westminster, London W1W 6XH, UK
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Iannetta M, Di Caro A, Nicastri E, Vairo F, Masanja H, Kobinger G, Mirazimi A, Ntoumi F, Zumla A, Ippolito G. Viral Hemorrhagic Fevers Other than Ebola and Lassa. Infect Dis Clin North Am 2020; 33:977-1002. [PMID: 31668201 DOI: 10.1016/j.idc.2019.08.003] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Viral hemorrhagic fevers represent a group of diseases caused by enveloped RNA viruses. The epidemiology is broadly variable, ranging from geographically localized to more diffuse infections. Viral hemorrhagic fevers are classified as category A bioweapon agents by the Centers for Disease Control and Prevention. Viral hemorrhagic fevers are severe febrile illnesses with hemorrhagic phenomena. Laboratory diagnosis takes place in highly specialized reference laboratories. Treatment is essentially supportive. In this article, we focus the attention on yellow fever and viral hemorrhagic fevers other than Ebola and Lassa virus diseases that have been described elsewhere in this issue.
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Affiliation(s)
- Marco Iannetta
- National Institute for Infectious Diseases, Lazzaro Spallanzani, IRCCS, Via Portuense 292, Rome 00149, Italy
| | - Antonino Di Caro
- National Institute for Infectious Diseases, Lazzaro Spallanzani, IRCCS, Via Portuense 292, Rome 00149, Italy
| | - Emanuele Nicastri
- National Institute for Infectious Diseases, Lazzaro Spallanzani, IRCCS, Via Portuense 292, Rome 00149, Italy
| | - Francesco Vairo
- National Institute for Infectious Diseases, Lazzaro Spallanzani, IRCCS, Via Portuense 292, Rome 00149, Italy
| | - Honorati Masanja
- Ifakara Health Institute, Ifakara Health Research and Development Centre, Kiko Avenue, Plot N 463, Mikocheni, Dar es Salaam, Tanzania
| | - Gary Kobinger
- Centre de Recherche en Infectiologie, Centre Hospitalier Universitaire de Québec, Université Laval, 2325 Rue de l'Université, Quebec City, Quebec G1V 0A6, Canada
| | - Ali Mirazimi
- Division of Clinical Microbiology, Department of Laboratory Medicine, Karolinska Institutet, Alfred Nobels Alle 8 Plan 7, Stockholm 14183, Sweden
| | - Francine Ntoumi
- Université Marien NGouabi, Fondation Congolaise pour la Recherche Médicale (FCRM), Villa D6, Campus OMS//AFRO Djoué, Brazzaville, Congo; Institute for Tropical Medicine, University of Tübingen, Germany
| | - Alimuddin Zumla
- Center for Clinical Microbiology, University College London, Royal Free Campus 2nd Floor, Rowland Hill Street, London NW3 2PF, United Kingdom
| | - Giuseppe Ippolito
- National Institute for Infectious Diseases, Lazzaro Spallanzani, IRCCS, Via Portuense 292, Rome 00149, Italy.
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Escalera-Antezana JP, Rodriguez-Villena OJ, Arancibia-Alba AW, Alvarado-Arnez LE, Bonilla-Aldana DK, Rodríguez-Morales AJ. Clinical features of fatal cases of Chapare virus hemorrhagic fever originating from rural La Paz, Bolivia, 2019: A cluster analysis. Travel Med Infect Dis 2020; 36:101589. [PMID: 32061859 DOI: 10.1016/j.tmaid.2020.101589] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2019] [Revised: 02/07/2020] [Accepted: 02/11/2020] [Indexed: 10/25/2022]
Abstract
INTRODUCTION In 2003 an emerging mammarenavirus (formerly arenaviruses) was discovered in Bolivia and named Chapare (CHAPV). It was associated with severe and fatal hemorrhagic fever, being similar in clinical features to Machupo (MACV). In mid-2019, CHAPV was the cause of a cluster of five cases, two of them laboratory confirmed, three of them fatal. Here, we report the main clinical findings, epidemiological features and the potential ecological aspects, of that cluster of cases in rural La Paz, Bolivia. METHODS For this observational, retrospective and cross-sectional study, information was obtained from the Hospitals and the Ministry of Health for the cases that were laboratory-diagnosed and related, during 2019. RT-PCR was used for the detection of the RNA of CHAPV in the blood samples. RESULTS Two cases were RT-PCR + for CHAPV. The median age of patients was 42 y-old (IQR 25-45), four out of five were male. All patients were hospitalized, admitted to the ICU and had fever, upper digestive hemorrhage, with two of them, presenting ARDS, and requiring mechanical ventilation. Three patients died (case fatality rate, CFR 60%). CONCLUSIONS Mammarenaviruses led to a high fatality rate. These cases occurred in areas with suitable ecoepidemiological conditions for rodent-borne diseases, including CHAPV infection. Socioenvironmental and occupational factors in rural areas of Bolivia may contribute with the risk of zoonotic spillover and transmission to humans.
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Affiliation(s)
| | - Omar J Rodriguez-Villena
- Emergency Department and Emergency Medical Residency Program Coordination, Hospital Obrero N1, Caja Nacional de Salud, La Paz, Bolivia
| | | | | | - D Katterine Bonilla-Aldana
- Incubator in Zoonosis (SIZOO), Biodiversity and Ecosystem Conservation Research Group (BIOECOS), Fundación Universitaria Autónoma de las Américas, Sede Pereira, Pereira, Risaralda, Colombia; Public Health and Infection Research Group, Faculty of Health Sciences, Universidad Tecnológica de Pereira, Pereira, Risaralda, Colombia
| | - Alfonso J Rodríguez-Morales
- Universidad Franz Tamayo/UNIFRANZ, Cochabamba, Bolivia; Public Health and Infection Research Group, Faculty of Health Sciences, Universidad Tecnológica de Pereira, Pereira, Risaralda, Colombia; Grupo de Investigación Biomedicina, Faculty of Medicine, Fundación Universitaria Autónoma de las Américas, Pereira, Risaralda, Colombia.
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Gravinatti ML, Barbosa CM, Soares RM, Gregori F. Synanthropic rodents as virus reservoirs and transmitters. Rev Soc Bras Med Trop 2020; 53:e20190486. [PMID: 32049206 PMCID: PMC7083353 DOI: 10.1590/0037-8682-0486-2019] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2019] [Accepted: 01/09/2020] [Indexed: 12/27/2022] Open
Abstract
This review focuses on reports of hepatitis E virus, hantavirus, rotavirus,
coronavirus, and arenavirus in synanthropic rodents (Rattus
rattus, Rattus norvegicus, and Mus
musculus) within urban environments. Despite their potential impact
on human health, relatively few studies have addressed the monitoring of these
viruses in rodents. Comprehensive control and preventive activities should
include actions such as the elimination or reduction of rat and mouse
populations, sanitary education, reduction of shelters for the animals, and
restriction of the access of rodents to residences, water, and food
supplies.
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Affiliation(s)
- Mara Lucia Gravinatti
- Departamento de Medicina Veterinária Preventiva e Saúde Animal, Faculdade de Medicina Veterinária, Universidade de São Paulo, São Paulo, SP, Brazil
| | | | - Rodrigo Martins Soares
- Departamento de Medicina Veterinária Preventiva e Saúde Animal, Faculdade de Medicina Veterinária, Universidade de São Paulo, São Paulo, SP, Brazil
| | - Fábio Gregori
- Departamento de Medicina Veterinária Preventiva e Saúde Animal, Faculdade de Medicina Veterinária, Universidade de São Paulo, São Paulo, SP, Brazil
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Guinea Pig Transferrin Receptor 1 Mediates Cellular Entry of Junín Virus and Other Pathogenic New World Arenaviruses. J Virol 2020; 94:JVI.01278-19. [PMID: 31748396 DOI: 10.1128/jvi.01278-19] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2019] [Accepted: 11/13/2019] [Indexed: 12/12/2022] Open
Abstract
Several clade B New World arenaviruses (NWAs) can cause severe and often fatal hemorrhagic fever, for which preventive and therapeutic measures are severely limited. These NWAs use human transferrin receptor 1 (hTfR1) as a host cell receptor for virus entry. The most prevalent of the pathogenic NWAs is Junín virus (JUNV), the etiological agent of Argentine hemorrhagic fever. Small animal models of JUNV infection are limited because most laboratory rodent species are refractory to disease. Only guinea pigs are known to develop disease following JUNV infection, but the underlying mechanisms are not well characterized. In the present study, we demonstrate marked susceptibility of Hartley guinea pigs to uniformly lethal disease when challenged with as few as 4 PFU of the Romero strain of JUNV. In vitro, we show that infection of primary guinea pig macrophages results in greater JUNV replication compared to infection of hamster or mouse macrophages. We provide evidence that the guinea pig TfR1 (gpTfR1) is the principal receptor for JUNV, while hamster and mouse orthologs fail to support viral entry/infection of pseudotyped murine leukemia viruses expressing pathogenic NWA glycoproteins or JUNV. Together, our results indicate that gpTfR1 serves as the primary receptor for pathogenic NWAs, enhancing viral infection in guinea pigs.IMPORTANCE JUNV is one of five known NWAs that cause viral hemorrhagic fever in humans. Countermeasures against JUNV infection are limited to immunization with the Candid#1 vaccine and immune plasma, which are available only in Argentina. The gold standard small animal model for JUNV infection is the guinea pig. Here, we demonstrate high sensitivity of this species to severe JUNV infection and identify gpTfR1 as the primary receptor. Use of hTfR1 for host cell entry is a feature shared by pathogenic NWAs. Our results show that expression of gpTfR1 or hTfR1 comparably enhances JUNV virus entry/infectivity. Our findings shed light on JUNV infection in guinea pigs as a model for human disease and suggest that similar pathophysiological mechanisms related to iron sequestration during infection and regulation of TfR1 expression may be shared between humans and guinea pigs. A better understanding of the underlying disease process will guide development of new therapeutic interventions.
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Cubitt B, Ortiz-Riano E, Cheng BY, Kim YJ, Yeh CD, Chen CZ, Southall NOE, Zheng W, Martinez-Sobrido L, de la Torre JC. A cell-based, infectious-free, platform to identify inhibitors of lassa virus ribonucleoprotein (vRNP) activity. Antiviral Res 2019; 173:104667. [PMID: 31786250 PMCID: PMC6954049 DOI: 10.1016/j.antiviral.2019.104667] [Citation(s) in RCA: 10] [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: 09/10/2019] [Revised: 11/22/2019] [Accepted: 11/26/2019] [Indexed: 12/15/2022]
Abstract
The mammarenavirus Lassa (LASV) is highly prevalent in West Africa where it infects several hundred thousand individuals annually resulting in a high number of Lassa fever (LF) cases, a febrile disease associated with high morbidity and significant mortality. Mounting evidence indicates that the worldwide-distributed prototypic mammarenavirus lymphocytic choriomeningitis virus (LCMV) is a neglected human pathogen of clinical significance. There are not Food and Drug Administration (FDA) licensed vaccines and current anti-mammarenavirus therapy is limited to an off-label use of ribavirin that is only partially effective and can cause significant side effects. Therefore, there is an unmet need for novel antiviral drugs to combat LASV. This task would be facilitated by the implementation of high throughput screens (HTS) to identify inhibitors of the activity of the virus ribonucleoprotein (vRNP) responsible for directing virus RNA genome replication and gene transcription. The use of live LASV for this purpose is jeopardized by the requirement of biosafety level 4 (BSL4) containment. We have developed a virus-free cell platform, where expression levels of reporter genes serve as accurate surrogates of vRNP activity, to develop cell-based assays compatible with HTS to identify inhibitors of LASV and LCMV mammarenavirus vRNP activities. Generation of cell lines harboring functional viral ribonucleoprotein complexes (vRNP) of LCMV and LASV. LASV and LCMV vRNP-expressing cell-based screening assays for inhibitors of LASV and LCMV RNA replication and gene transcription. Ionophore antibiotics narasin and valinomycin are potent inhibitors of LCMV and LASV vRNPs. Inhibitors of mitochondrial electron transport complex (mETC) I and III are potent inhibitors of LCMV and LASV vRNPs.
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Affiliation(s)
- Beatrice Cubitt
- Department of Immunology and Microbiology, The Scripps Research Institute, La Jolla, CA, 92037, USA
| | - Emilio Ortiz-Riano
- Department of Microbiology and Immunology, University of Rochester Medical Center, 601 Elmwood Avenue, Rochester, NY, 14642, USA
| | - Benson Yh Cheng
- Department of Microbiology and Immunology, University of Rochester Medical Center, 601 Elmwood Avenue, Rochester, NY, 14642, USA
| | - Yu-Jin Kim
- Department of Immunology and Microbiology, The Scripps Research Institute, La Jolla, CA, 92037, USA
| | - Charles D Yeh
- National Center for Advancing Translational Sciences, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Catherine Z Chen
- National Center for Advancing Translational Sciences, National Institutes of Health, Bethesda, MD, 20892, USA
| | - N O E Southall
- National Center for Advancing Translational Sciences, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Wei Zheng
- National Center for Advancing Translational Sciences, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Luis Martinez-Sobrido
- Department of Microbiology and Immunology, University of Rochester Medical Center, 601 Elmwood Avenue, Rochester, NY, 14642, USA
| | - Juan C de la Torre
- Department of Immunology and Microbiology, The Scripps Research Institute, La Jolla, CA, 92037, USA.
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Comparison of the Innate Immune Responses to Pathogenic and Nonpathogenic Clade B New World Arenaviruses. J Virol 2019; 93:JVI.00148-19. [PMID: 31270228 DOI: 10.1128/jvi.00148-19] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2019] [Accepted: 06/28/2019] [Indexed: 12/25/2022] Open
Abstract
The New World (NW) arenaviruses are a diverse group of zoonotic viruses, including several causative agents of severe hemorrhagic fevers in humans. All known human-pathogenic NW arenaviruses belong to clade B, where they group into sublineages with phylogenetically closely related nonpathogenic viruses, e.g., the highly pathogenic Junin (JUNV) and Machupo viruses with the nonpathogenic Tacaribe virus (TCRV). Considering the close genetic relationship of nonpathogenic and pathogenic NW arenaviruses, the identification of molecular determinants of virulence is of great importance. The host cell's innate antiviral defense represents a major barrier for zoonotic infection. Here, we performed a side-by-side comparison of the innate immune responses against JUNV and TCRV in human cells. Despite similar levels of viral replication, infection with TCRV consistently induced a stronger type I interferon (IFN-I) response than JUNV infection did. Transcriptome profiling revealed upregulation of a largely overlapping set of interferon-stimulated genes in cells infected with TCRV and JUNV. Both viruses were relatively insensitive to IFN-I treatment of human cells and induced similar levels of apoptosis in the presence or absence of an IFN-I response. However, in comparison to JUNV, TCRV induced stronger activation of the innate sensor double-strand RNA-dependent protein kinase R (PKR), resulting in phosphorylation of eukaryotic translation initiation factor eIF2α. Confocal microscopy studies revealed similar subcellular colocalizations of the JUNV and TCRV viral replication-transcription complexes with PKR. However, deletion of PKR by CRISPR/Cas9 hardly affected JUNV but promoted TCRV multiplication, providing the first evidence for differential innate recognition and control of pathogenic and nonpathogenic NW arenaviruses by PKR.IMPORTANCE New World (NW) arenaviruses are a diverse family of emerging zoonotic viruses that merit significant attention as important public health problems. The close genetic relationship of nonpathogenic NW arenaviruses with their highly pathogenic cousins suggests that few mutations may be sufficient to enhance virulence. The identification of molecular determinants of virulence of NW arenaviruses is therefore of great importance. Here we undertook a side-by-side comparison of the innate immune responses against the highly pathogenic Junin virus (JUNV) and the related nonpathogenic Tacaribe virus (TCRV) in human cells. We consistently found that TCRV induces a stronger type I interferon (IFN-I) response than JUNV. Transcriptome profiling revealed an overlapping pattern of IFN-induced gene expression and similar low sensitivities to IFN-I treatment. However, the double-stranded RNA (dsRNA)-dependent protein kinase R (PKR) contributed to the control of TCRV, but not JUNV, providing the first evidence for differential innate recognition and control of JUNV and TCRV.
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