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Murphy H, Huang Q, Jensen J, Weber N, Mendonça L, Ly H, Liang Y. Characterization of bi-segmented and tri-segmented recombinant Pichinde virus particles. J Virol 2024:e0079924. [PMID: 39264155 DOI: 10.1128/jvi.00799-24] [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: 05/05/2024] [Accepted: 08/29/2024] [Indexed: 09/13/2024] Open
Abstract
Mammarenaviruses include several highly virulent pathogens (e.g., Lassa virus) capable of causing severe hemorrhagic fever diseases for which there are no approved vaccines and limited treatment options. Mammarenaviruses are enveloped, bi-segmented ambisense RNA viruses. There is limited knowledge about cellular proteins incorporated into progeny virion particles and their potential biological roles in viral infection. Pichinde virus (PICV) is a prototypic arenavirus used to characterize mammarenavirus replication and pathogenesis. We have developed a recombinant PICV with a tri-segmented RNA genome as a viral vector platform. Whether the tri-segmented virion differs from the wild-type bi-segmented one in viral particle morphology and protein composition has not been addressed. In this study, recombinant PICV (rPICV) virions with a bi-segmented (rP18bi) and a tri-segmented (rP18tri) genome were purified by density-gradient ultracentrifugation and analyzed by cryo-electron microscopy and mass spectrometry. Both virion types are pleomorphic with spherical morphology and have no significant difference in size despite rP18tri having denser particles. Both virion types also contain similar sets of cellular proteins. Among the highly enriched virion-associated cellular proteins are components of the endosomal sorting complex required for transport pathway and vesicle trafficking, such as ALIX, Tsg101, VPS, CHMP, and Ras-associated binding proteins, which have known functions in virus assembly and budding. Other enriched cellular proteins include peripheral and transmembrane proteins, chaperone proteins, and ribosomal proteins; their biological roles in viral infection warrant further analysis. Our study provides important insights into mammarenavirus particle formation and aids in the future development of viral vectors and antiviral discovery.IMPORTANCEMammarenaviruses, such as Lassa virus, are enveloped RNA viruses that can cause severe hemorrhagic fever diseases (Lassa fever) with no approved vaccine and limited therapeutic options. Cellular proteins incorporated into progeny virion particles and their biological roles in mammarenavirus infection have not been well characterized. Pichinde virus (PICV) is a prototypic mammarenavirus used as a surrogate model for Lassa fever. We used cryo-electron microscopy and proteomic analysis to characterize the morphology and protein contents of the purified PICV particles that package either two (bi-segmented) or three (tri-segmented) genomic RNA segments. Our results demonstrate a similar virion morphology but different particle density for the bi- and tri-segmented viral particles and reveal major virion-associated cellular proteins. This study provides important insights into the virus-host interactions that can be used for antiviral development and optimizing arenavirus-based vaccine vectors.
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Affiliation(s)
- Hannah Murphy
- Department of Veterinary and Biomedical Sciences, College of Veterinary Medicine, University of Minnesota, St. Paul, Minnesota, USA
| | - Qinfeng Huang
- Department of Veterinary and Biomedical Sciences, College of Veterinary Medicine, University of Minnesota, St. Paul, Minnesota, USA
| | - Jacob Jensen
- Department of Biochemistry, Molecular Biology and Biophysics, College of Biological Sciences, University of Minnesota, Twin Cities, Minneapolis, Minnesota, USA
| | - Noah Weber
- Department of Biochemistry, Molecular Biology and Biophysics, College of Biological Sciences, University of Minnesota, Twin Cities, Minneapolis, Minnesota, USA
| | - Luiza Mendonça
- Department of Biochemistry, Molecular Biology and Biophysics, College of Biological Sciences, University of Minnesota, Twin Cities, Minneapolis, Minnesota, USA
| | - Hinh Ly
- Department of Veterinary and Biomedical Sciences, College of Veterinary Medicine, University of Minnesota, St. Paul, Minnesota, USA
| | - Yuying Liang
- Department of Veterinary and Biomedical Sciences, College of Veterinary Medicine, University of Minnesota, St. Paul, Minnesota, USA
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Otsuka Y, Zhang L, Mou H, Shumate J, Kitzmiller CE, Scampavia L, Bannister TD, Farzan M, Choe H, Spicer TP. Simultaneous screening for selective SARS-CoV-2, Lassa, and Machupo virus entry inhibitors. SLAS DISCOVERY : ADVANCING LIFE SCIENCES R & D 2024; 29:100178. [PMID: 39159824 DOI: 10.1016/j.slasd.2024.100178] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2024] [Revised: 08/05/2024] [Accepted: 08/07/2024] [Indexed: 08/21/2024]
Abstract
Emerging highly pathogenic viruses can pose profound impacts on global health, the economy, and society. To meet that challenge, the National Institute of Allergy and Infectious Diseases (NIAID) established nine Antiviral Drug Discovery (AViDD) centers for early-stage identification and validation of novel antiviral drug candidates against viruses with pandemic potential. As part of this initiative, we established paired entry assays that simultaneously screen for inhibitors specifically targeting SARS-CoV-2 (SARS2), Lassa virus (LASV) and Machupo virus (MACV) entry. To do so we employed a dual pseudotyped virus (PV) infection system allowing us to screen ∼650,000 compounds efficiently and cost-effectively. Adaptation of these paired assays into 1536 well-plate format for ultra-high throughput screening (uHTS) resulted in the largest screening ever conducted in our facility, with over 2.4 million wells completed. The paired infection system allowed us to detect two PV infections simultaneously: LASV + MACV, MACV + SARS2, and SARS2 + LASV. Each PV contains a different luciferase reporter gene which enabled us to measure the infection of each PV exclusively, albeit in the same well. Each PV was screened at least twice utilizing different reporters, which allowed us to select the inhibitors specific to a particular PV and to exclude those that hit off targets, including cellular components or the reporter proteins. All assays were robust with an average Z' value ranging from 0.5 to 0.8. The primary screening of ∼650,000 compounds resulted in 1812, 1506, and 2586 unique hits for LASV, MACV, and SARS2, respectively. The confirmation screening narrowed this list further to 60, 40, and 90 compounds that are unique to LASV, MACV, and SARS2, respectively. Of these compounds, 8, 35, and 50 compounds showed IC50 value < 10 μM, some of which have much greater potency and excellent antiviral activity profiles specific to LASV, MACV, and SARS2, and none are cytotoxic. These selected compounds are currently being studied for their mechanism of action and to improve their specificity and potency through chemical modification.
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Affiliation(s)
- Yuka Otsuka
- Department of Molecular Medicine, Herbert Wertheim UF Scripps Institute for Biomedical Innovation & Technology, 130 Scripps Way, Jupiter, FL 33458, United States
| | - Lizhou Zhang
- Division of Infectious Diseases, Boston Children's Hospital, Boston, MA 02115, United States; Department of Pediatrics, Harvard Medical School, Boston, MA 02115, United States
| | - Huihui Mou
- Division of Infectious Diseases, Boston Children's Hospital, Boston, MA 02115, United States; Department of Pediatrics, Harvard Medical School, Boston, MA 02115, United States
| | - Justin Shumate
- Department of Molecular Medicine, Herbert Wertheim UF Scripps Institute for Biomedical Innovation & Technology, 130 Scripps Way, Jupiter, FL 33458, United States
| | - Claire E Kitzmiller
- Division of Infectious Diseases, Boston Children's Hospital, Boston, MA 02115, United States
| | - Louis Scampavia
- Department of Molecular Medicine, Herbert Wertheim UF Scripps Institute for Biomedical Innovation & Technology, 130 Scripps Way, Jupiter, FL 33458, United States
| | - Thomas D Bannister
- Department of Molecular Medicine, Herbert Wertheim UF Scripps Institute for Biomedical Innovation & Technology, 130 Scripps Way, Jupiter, FL 33458, United States
| | - Michael Farzan
- Division of Infectious Diseases, Boston Children's Hospital, Boston, MA 02115, United States; Department of Pediatrics, Harvard Medical School, Boston, MA 02115, United States
| | - Hyeryun Choe
- Division of Infectious Diseases, Boston Children's Hospital, Boston, MA 02115, United States; Department of Pediatrics, Harvard Medical School, Boston, MA 02115, United States
| | - Timothy P Spicer
- Department of Molecular Medicine, Herbert Wertheim UF Scripps Institute for Biomedical Innovation & Technology, 130 Scripps Way, Jupiter, FL 33458, United States.
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3
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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] [MESH Headings] [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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Witwit H, Betancourt CA, Cubitt B, Khafaji R, Kowalski H, Jackson N, Ye C, Martinez-Sobrido L, de la Torre JC. Cellular N-Myristoyl Transferases Are Required for Mammarenavirus Multiplication. Viruses 2024; 16:1362. [PMID: 39339839 PMCID: PMC11436053 DOI: 10.3390/v16091362] [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: 08/02/2024] [Revised: 08/19/2024] [Accepted: 08/22/2024] [Indexed: 09/30/2024] Open
Abstract
The mammarenavirus matrix Z protein plays critical roles in virus assembly and cell egress. Meanwhile, heterotrimer complexes of a stable signal peptide (SSP) together with glycoprotein subunits GP1 and GP2, generated via co-and post-translational processing of the surface glycoprotein precursor GPC, form the spikes that decorate the virion surface and mediate virus cell entry via receptor-mediated endocytosis. The Z protein and the SSP undergo N-terminal myristoylation by host cell N-myristoyltransferases (NMT1 and NMT2), and G2A mutations that prevent myristoylation of Z or SSP have been shown to affect the Z-mediated virus budding and GP2-mediated fusion activity that is required to complete the virus cell entry process. In the present work, we present evidence that the validated on-target specific pan-NMT inhibitor DDD85646 exerts a potent antiviral activity against the prototypic mammarenavirus lymphocytic choriomeningitis virus (LCMV) that correlates with reduced Z budding activity and GP2-mediated fusion activity as well as with proteasome-mediated degradation of the Z protein. The potent anti-mammarenaviral activity of DDD85646 was also observed with the hemorrhagic-fever-causing Junin (JUNV) and Lassa (LASV) mammarenaviruses. Our results support the exploration of NMT inhibition as a broad-spectrum antiviral against human pathogenic mammarenaviruses.
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Affiliation(s)
- Haydar Witwit
- Department of Immunology and Microbiology, The Scripps Research Institute, La Jolla, CA 92037, USA; (H.W.); (C.A.B.); (B.C.); (R.K.)
| | - Carlos Alberto Betancourt
- Department of Immunology and Microbiology, The Scripps Research Institute, La Jolla, CA 92037, USA; (H.W.); (C.A.B.); (B.C.); (R.K.)
| | - Beatrice Cubitt
- Department of Immunology and Microbiology, The Scripps Research Institute, La Jolla, CA 92037, USA; (H.W.); (C.A.B.); (B.C.); (R.K.)
| | - Roaa Khafaji
- Department of Immunology and Microbiology, The Scripps Research Institute, La Jolla, CA 92037, USA; (H.W.); (C.A.B.); (B.C.); (R.K.)
| | - Heinrich Kowalski
- Center for Medical Biochemistry, Max F. Perutz Laboratories (MFPL), Medical University of Vienna, Vienna Biocenter (VBC), 1030 Vienna, Austria;
| | - Nathaniel Jackson
- Texas Biomedical Research Institute, San Antonio, TX 78227, USA; (N.J.); (L.M.-S.)
| | - Chengjin Ye
- Texas Biomedical Research Institute, San Antonio, TX 78227, USA; (N.J.); (L.M.-S.)
| | | | - Juan C. de la Torre
- Department of Immunology and Microbiology, The Scripps Research Institute, La Jolla, CA 92037, USA; (H.W.); (C.A.B.); (B.C.); (R.K.)
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Eilon-Ashkenazy M, Cohen-Dvashi H, Borni S, Shaked R, Calinsky R, Levy Y, Diskin R. The structure of the Lujo virus spike complex. Nat Commun 2024; 15:7175. [PMID: 39169025 PMCID: PMC11339409 DOI: 10.1038/s41467-024-51606-0] [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: 03/05/2024] [Accepted: 08/13/2024] [Indexed: 08/23/2024] Open
Abstract
Lujo virus (LUJV) is a human pathogen that was the cause of a deadly hemorrhagic fever outbreak in Africa. LUJV is a divergent member of the Arenaviridae with some similarities to both the "Old World" and "New World" serogroups, but it uses a cell-entry receptor, neuropilin-2 (NRP2), that is distinct from the receptors of OW and NW viruses. Though the receptor binding domain of LUJV has been characterized structurally, the overall organization of the trimeric spike complex and how NRP2 is recognized in this context were unknown. Here, we present the structure of the membrane-embedded LUJV spike complex determined by cryo-electron microscopy. Analysis of the structure suggested that a single NRP2 molecule is bound at the apex of the trimeric spike and that multiple subunits of the trimer contact the receptor. The binding of NRP2 involves an intriguing arginine-methionine interaction, which we analyzed using quantum mechanical modeling methods. We compare the LUJV spike structure with the only other available structure of a complete arenaviral spike, which is the Lassa virus. The similarities and differences between them shed light on Arenavirus evolution, inform vaccine design, and provide information that will be useful in combating future Arenavirus outbreaks.
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Affiliation(s)
- Maayan Eilon-Ashkenazy
- Department of Chemical and Structural Biology, Weizmann Institute of Science, Rehovot, Israel
| | - Hadas Cohen-Dvashi
- Department of Chemical and Structural Biology, Weizmann Institute of Science, Rehovot, Israel
| | - Sarah Borni
- Department of Chemical and Structural Biology, Weizmann Institute of Science, Rehovot, Israel
| | - Ron Shaked
- Department of Chemical and Structural Biology, Weizmann Institute of Science, Rehovot, Israel
| | - Rivka Calinsky
- Department of Chemical and Structural Biology, Weizmann Institute of Science, Rehovot, Israel
| | - Yaakov Levy
- Department of Chemical and Structural Biology, Weizmann Institute of Science, Rehovot, Israel
| | - Ron Diskin
- Department of Chemical and Structural Biology, Weizmann Institute of Science, Rehovot, Israel.
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Witwit H, Betancourt C, Cubitt B, Khafaji R, Kowalski H, Jackson N, Ye C, Martinez-Sobrido L, de la Torre JC. Cellular N-myristoyl transferases Are Required for Mammarenavirus Multiplication. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.08.01.606235. [PMID: 39211253 PMCID: PMC11361045 DOI: 10.1101/2024.08.01.606235] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/04/2024]
Abstract
The mammarenavirus matrix Z protein plays critical roles in virus assembly and cell egress, whereas heterotrimer complexes of a stable signal peptide (SSP) together with glycoprotein subunits GP1 and GP2, generated via co-and post-translational processing of the surface glycoprotein precursor GPC, form the spikes that decorate the virion surface and mediate virus cell entry via receptor-mediated endocytosis. The Z protein and SSP undergo N-terminal myristoylation by host cell N-myristoyltransferases (NMT1 and NMT2), and G2A mutations that prevent myristoylation of Z or SSP have been shown to affect Z mediated virus budding and GP2 mediated fusion activity required to complete the virus cell entry process. In the present work, we present evidence that the validated on-target specific pan NMT inhibitor DDD85464 exerts a potent antiviral activity against the prototypic mammarenavirus lymphocytic choriomeningitis virus (LCMV) that correlated with reduced Z budding activity and GP2 mediated fusion activity, as well as proteasome mediated degradation of the Z protein. The potent anti-mammarenaviral activity of DDD85646 was also observed with the hemorrhagic fever causing mammarenaviruses Junin (JUNV) and Lassa (LASV) viruses. Our results support exploration of NMT inhibition as a broad-spectrum antiviral against human pathogenic mammarenaviruses.
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7
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Shaw AB, Tse HN, Byford O, Plahe G, Moon-Walker A, Hover SE, Saphire EO, Whelan SPJ, Mankouri J, Fontana J, Barr JN. Cellular endosomal potassium ion flux regulates arenavirus uncoating during virus entry. mBio 2024; 15:e0168423. [PMID: 38874413 PMCID: PMC11253613 DOI: 10.1128/mbio.01684-23] [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: 07/12/2023] [Accepted: 03/21/2024] [Indexed: 06/15/2024] Open
Abstract
Lymphocytic choriomeningitis virus (LCMV) is an enveloped and segmented negative-sense RNA virus classified within the Arenaviridae family of the Bunyavirales order. LCMV is associated with fatal disease in immunocompromised populations and, as the prototypical arenavirus member, acts as a model for the many highly pathogenic members of the Arenaviridae family, such as Junín, Lassa, and Lujo viruses, all of which are associated with devastating hemorrhagic fevers. To enter cells, the LCMV envelope fuses with late endosomal membranes, for which two established requirements are low pH and interaction between the LCMV glycoprotein (GP) spike and secondary receptor CD164. LCMV subsequently uncoats, where the RNA genome-associated nucleoprotein (NP) separates from the Z protein matrix layer, releasing the viral genome into the cytosol. To further examine LCMV endosome escape, we performed an siRNA screen which identified host cell potassium ion (K+) channels as important for LCMV infection, with pharmacological inhibition confirming K+ channel involvement during the LCMV entry phase completely abrogating productive infection. To better understand the K+-mediated block in infection, we tracked incoming virions along their entry pathway under physiological conditions, where uncoating was signified by separation of NP and Z proteins. In contrast, K+ channel blockade prevented uncoating, trapping virions within Rab7 and CD164-positive endosomes, identifying K+ as a third LCMV entry requirement. K+ did not increase GP-CD164 binding or alter GP-CD164-dependent fusion. Thus, we propose that K+ mediates uncoating by modulating NP-Z interactions within the virion interior. These results suggest K+ channels represent a potential anti-arenaviral target.IMPORTANCEArenaviruses can cause fatal human disease for which approved preventative or therapeutic options are not available. Here, using the prototypical LCMV, we identified K+ channels as critical for arenavirus infection, playing a vital role during the entry phase of the infection cycle. We showed that blocking K+ channel function resulted in entrapment of LCMV particles within late endosomal compartments, thus preventing productive replication. Our data suggest K+ is required for LCMV uncoating and genome release by modulating interactions between the viral nucleoprotein and the matrix protein layer inside the virus particle.
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Affiliation(s)
- Amelia B. Shaw
- School of Molecular and Cellular Biology, Faculty of Biological Sciences, University of Leeds, Leeds, United Kingdom
- Astbury Centre for Structural Molecular Biology, University of Leeds, Leeds, United Kingdom
| | - Hiu Nam Tse
- School of Molecular and Cellular Biology, Faculty of Biological Sciences, University of Leeds, Leeds, United Kingdom
- Astbury Centre for Structural Molecular Biology, University of Leeds, Leeds, United Kingdom
| | - Owen Byford
- School of Molecular and Cellular Biology, Faculty of Biological Sciences, University of Leeds, Leeds, United Kingdom
- Astbury Centre for Structural Molecular Biology, University of Leeds, Leeds, United Kingdom
| | - Grace Plahe
- School of Molecular and Cellular Biology, Faculty of Biological Sciences, University of Leeds, Leeds, United Kingdom
- Astbury Centre for Structural Molecular Biology, University of Leeds, Leeds, United Kingdom
| | - Alex Moon-Walker
- Center for Infectious Disease and Vaccine Research, La Jolla Institute for Immunology, La Jolla, California, USA
- Department of Molecular Microbiology, Washington University in St. Louis, St. Louis, Missouri, USA
- Program in Virology, Harvard Medical School, Boston, Massachusetts, USA
| | - Samantha E. Hover
- School of Molecular and Cellular Biology, Faculty of Biological Sciences, University of Leeds, Leeds, United Kingdom
- Astbury Centre for Structural Molecular Biology, University of Leeds, Leeds, United Kingdom
| | - Erica Ollmann Saphire
- Center for Infectious Disease and Vaccine Research, La Jolla Institute for Immunology, La Jolla, California, USA
| | - Sean P. J. Whelan
- Department of Molecular Microbiology, Washington University in St. Louis, St. Louis, Missouri, USA
| | - Jamel Mankouri
- School of Molecular and Cellular Biology, Faculty of Biological Sciences, University of Leeds, Leeds, United Kingdom
- Astbury Centre for Structural Molecular Biology, University of Leeds, Leeds, United Kingdom
| | - Juan Fontana
- School of Molecular and Cellular Biology, Faculty of Biological Sciences, University of Leeds, Leeds, United Kingdom
- Astbury Centre for Structural Molecular Biology, University of Leeds, Leeds, United Kingdom
| | - John N. Barr
- School of Molecular and Cellular Biology, Faculty of Biological Sciences, University of Leeds, Leeds, United Kingdom
- Astbury Centre for Structural Molecular Biology, University of Leeds, Leeds, United Kingdom
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Trischitta P, Tamburello MP, Venuti A, Pennisi R. Pseudovirus-Based Systems for Screening Natural Antiviral Agents: A Comprehensive Review. Int J Mol Sci 2024; 25:5188. [PMID: 38791226 PMCID: PMC11121416 DOI: 10.3390/ijms25105188] [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: 03/27/2024] [Revised: 05/03/2024] [Accepted: 05/08/2024] [Indexed: 05/26/2024] Open
Abstract
Since the outbreak of COVID-19, researchers have been working tirelessly to discover effective ways to combat coronavirus infection. The use of computational drug repurposing methods and molecular docking has been instrumental in identifying compounds that have the potential to disrupt the binding between the spike glycoprotein of SARS-CoV-2 and human ACE2 (hACE2). Moreover, the pseudovirus approach has emerged as a robust technique for investigating the mechanism of virus attachment to cellular receptors and for screening targeted small molecule drugs. Pseudoviruses are viral particles containing envelope proteins, which mediate the virus's entry with the same efficiency as that of live viruses but lacking pathogenic genes. Therefore, they represent a safe alternative to screen potential drugs inhibiting viral entry, especially for highly pathogenic enveloped viruses. In this review, we have compiled a list of antiviral plant extracts and natural products that have been extensively studied against enveloped emerging and re-emerging viruses by pseudovirus technology. The review is organized into three parts: (1) construction of pseudoviruses based on different packaging systems and applications; (2) knowledge of emerging and re-emerging viruses; (3) natural products active against pseudovirus-mediated entry. One of the most crucial stages in the life cycle of a virus is its penetration into host cells. Therefore, the discovery of viral entry inhibitors represents a promising therapeutic option in fighting against emerging viruses.
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Affiliation(s)
- Paola Trischitta
- Department of Chemical, Biological, Pharmaceutical and Environmental Science, University of Messina, Viale Ferdinando Stagno d’Alcontres 31, 98166 Messina, Italy; (P.T.); (M.P.T.)
- Department of Chemistry, Biology, and Biotechnology, University of Perugia, Via Elce di Sotto 8, 06123 Perugia, Italy
| | - Maria Pia Tamburello
- Department of Chemical, Biological, Pharmaceutical and Environmental Science, University of Messina, Viale Ferdinando Stagno d’Alcontres 31, 98166 Messina, Italy; (P.T.); (M.P.T.)
| | - Assunta Venuti
- International Agency for Research on Cancer (IARC), World Health Organization, 69366 Lyon, CEDEX 07, France;
| | - Rosamaria Pennisi
- Department of Chemical, Biological, Pharmaceutical and Environmental Science, University of Messina, Viale Ferdinando Stagno d’Alcontres 31, 98166 Messina, Italy; (P.T.); (M.P.T.)
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9
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Nuñez IA, Crane A, Crozier I, Worwa G, Kuhn JH. Treatment of highly virulent mammarenavirus infections-status quo and future directions. Expert Opin Drug Discov 2024; 19:537-551. [PMID: 38606475 PMCID: PMC11069405 DOI: 10.1080/17460441.2024.2340494] [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: 01/08/2024] [Accepted: 04/04/2024] [Indexed: 04/13/2024]
Abstract
INTRODUCTION Mammarenaviruses are negative-sense bisegmented enveloped RNA viruses that are endemic in Africa, the Americas, and Europe. Several are highly virulent, causing acute human diseases associated with high case fatality rates, and are considered to be significant with respect to public health impact or bioterrorism threat. AREAS COVERED This review summarizes the status quo of treatment development, starting with drugs that are in advanced stages of evaluation in early clinical trials, followed by promising candidate medical countermeasures emerging from bench analyses and investigational animal research. EXPERT OPINION Specific therapeutic treatments for diseases caused by mammarenaviruses remain limited to the off-label use of ribavirin and transfusion of convalescent sera. Progress in identifying novel candidate medical countermeasures against mammarenavirus infection has been slow in part because of the biosafety and biosecurity requirements. However, novel methodologies and tools have enabled increasingly efficient high-throughput molecular screens of regulatory-agency-approved small-molecule drugs and led to the identification of several compounds that could be repurposed for the treatment of infection with several mammarenaviruses. Unfortunately, most of them have not yet been evaluated in vivo. The most promising treatment under development is a monoclonal antibody cocktail that is protective against multiple lineages of the Lassa virus in nonhuman primate disease models.
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Affiliation(s)
- Ivette A. Nuñez
- Integrated Research Facility at Fort Detrick, Division of
Clinical Research, National Institute of Allergy and Infectious Diseases, National
Institutes of Health, Fort Detrick, Frederick, MD21702, USA
| | - Anya Crane
- Integrated Research Facility at Fort Detrick, Division of
Clinical Research, National Institute of Allergy and Infectious Diseases, National
Institutes of Health, Fort Detrick, Frederick, MD21702, USA
| | - Ian Crozier
- Clinical Monitoring Research Program Directorate, Frederick
National Laboratory for Cancer Research, Frederick, MD 21702, USA
| | - Gabriella Worwa
- Integrated Research Facility at Fort Detrick, Division of
Clinical Research, National Institute of Allergy and Infectious Diseases, National
Institutes of Health, Fort Detrick, Frederick, MD21702, USA
| | - Jens H. Kuhn
- Integrated Research Facility at Fort Detrick, Division of
Clinical Research, National Institute of Allergy and Infectious Diseases, National
Institutes of Health, Fort Detrick, Frederick, MD21702, USA
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10
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Zuo S, Lu J, Sun Y, Song J, Han S, Feng X, Han ET, Cheng Y. The Plasmodium vivax MSP1P-19 is involved in binding of reticulocytes through interactions with the membrane proteins band3 and CD71. J Biol Chem 2024; 300:107285. [PMID: 38636656 PMCID: PMC11107369 DOI: 10.1016/j.jbc.2024.107285] [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: 01/14/2024] [Revised: 03/26/2024] [Accepted: 03/29/2024] [Indexed: 04/20/2024] Open
Abstract
The parasite Plasmodium vivax preferentially invades human reticulocytes. Its merozoite surface protein 1 paralog (PvMSP1P), particularly the 19-kDa C-terminal region (PvMSP1P-19), has been shown to bind to reticulocytes, and this binding can be inhibited by antisera obtained by PvMSP1P-19 immunization. The molecular mechanism of interactions between PvMSP1P-19 and reticulocytes during P. vivax invasion, however, remains unclear. In this study, we analyzed the ability of MSP1P-19 to bind to different concentrations of reticulocytes and confirmed its reticulocyte preference. LC-MS analysis was used to identify two potential reticulocyte receptors, band3 and CD71, that interact with MSP1P-19. Both PvMSP1P-19 and its sister taxon Plasmodium cynomolgi MSP1P-19 were found to bind to the extracellular loop (loop 5) of band3, where the interaction of MSP1P-19 with band3 was chymotrypsin sensitive. Antibodies against band3-P5, CD71, and MSP1P-19 reduced the binding activity of PvMSP1P-19 and Plasmodium cynomolgi MSP1P-19 to reticulocytes, while MSP1P-19 proteins inhibited Plasmodium falciparum invasion in vitro in a concentration-dependent manner. To sum up, identification and characterization of the reticulocyte receptor is important for understanding the binding of reticulocytes by MSP1P-19.
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Affiliation(s)
- Shenghuan Zuo
- Laboratory of Pathogen Infection and Immunity, Department of Clinical Medicine, Wuxi School of Medicine, Jiangnan University, Wuxi, Jiangsu, China
| | - Jiachen Lu
- Laboratory of Pathogen Infection and Immunity, Department of Clinical Medicine, Wuxi School of Medicine, Jiangnan University, Wuxi, Jiangsu, China
| | - Yifan Sun
- Laboratory of Pathogen Infection and Immunity, Department of Clinical Medicine, Wuxi School of Medicine, Jiangnan University, Wuxi, Jiangsu, China; Affiliated Hospital of Jiangnan University, Wuxi, Jiangsu, China
| | - Jing Song
- Affiliated Hospital of Jiangnan University, Wuxi, Jiangsu, China
| | - Su Han
- Laboratory of Pathogen Infection and Immunity, Department of Clinical Medicine, Wuxi School of Medicine, Jiangnan University, Wuxi, Jiangsu, China
| | - Xin Feng
- Laboratory of Pathogen Infection and Immunity, Department of Clinical Medicine, Wuxi School of Medicine, Jiangnan University, Wuxi, Jiangsu, China
| | - Eun-Taek Han
- Department of Medical Environmental Biology and Tropical Medicine, School of Medicine, Kangwon National University, Chuncheon, Gangwon-do, Republic of Korea
| | - Yang Cheng
- Laboratory of Pathogen Infection and Immunity, Department of Clinical Medicine, Wuxi School of Medicine, Jiangnan University, Wuxi, Jiangsu, China.
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11
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Yang J, Zhuang H, Li J, Nunez-Nescolarde AB, Luo N, Chen H, Li A, Qu X, Wang Q, Fan J, Bai X, Ye Z, Gu B, Meng Y, Zhang X, Wu D, Sia Y, Jiang X, Chen W, Combes AN, Nikolic-Paterson DJ, Yu X. The secreted micropeptide C4orf48 enhances renal fibrosis via an RNA-binding mechanism. J Clin Invest 2024; 134:e178392. [PMID: 38625739 PMCID: PMC11093611 DOI: 10.1172/jci178392] [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: 12/12/2023] [Accepted: 03/27/2024] [Indexed: 04/17/2024] Open
Abstract
Renal interstitial fibrosis is an important mechanism in the progression of chronic kidney disease (CKD) to end-stage kidney disease. However, we lack specific treatments to slow or halt renal fibrosis. Ribosome profiling identified upregulation of a secreted micropeptide, C4orf48 (Cf48), in mouse diabetic nephropathy. Cf48 RNA and protein levels were upregulated in tubular epithelial cells in human and experimental CKD. Serum Cf48 levels were increased in human CKD and correlated with loss of kidney function, increasing CKD stage, and the degree of active interstitial fibrosis. Cf48 overexpression in mice accelerated renal fibrosis, while Cf48 gene deletion or knockdown by antisense oligonucleotides significantly reduced renal fibrosis in CKD models. In vitro, recombinant Cf48 (rCf48) enhanced TGF-β1-induced fibrotic responses in renal fibroblasts and epithelial cells independently of Smad3 phosphorylation. Cellular uptake of Cf48 and its profibrotic response in fibroblasts operated via the transferrin receptor. RNA immunoprecipitation-sequencing identified Cf48 binding to mRNA of genes involved in the fibrotic response, including Serpine1, Acta2, Ccn2, and Col4a1. rCf48 binds to the 3'UTR of Serpine1 and increases mRNA half-life. We identify the secreted Cf48 micropeptide as a potential enhancer of renal fibrosis that operates as an RNA-binding peptide to promote the production of extracellular matrix.
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Affiliation(s)
- Jiayi Yang
- Department of Nephrology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
- Key Laboratory of Nephrology, National Health Commission and Guangdong Province, Guangzhou, China
| | - Hongjie Zhuang
- Department of Paediatrics, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Jinhua Li
- Department of Nephrology and
- Guangdong-Hong Kong Joint Laboratory on Immunological and Genetic Kidney Diseases, Guangdong Provincial People’s Hospital and Guangdong Academy of Medical Sciences, Guangzhou, China
- The Second Clinical College, Guangdong Medical University, Dongguan, Guangdong, China
- Department of Nephrology, Monash Health and Department of Medicine and
| | - Ana B. Nunez-Nescolarde
- Department of Anatomy and Developmental Biology, Monash Biomedicine Discovery Institute, Monash University, Clayton, Victoria, Australia
| | - Ning Luo
- Department of Nephrology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
- Key Laboratory of Nephrology, National Health Commission and Guangdong Province, Guangzhou, China
| | - Huiting Chen
- The Second Clinical College, Guangdong Medical University, Dongguan, Guangdong, China
| | - Andy Li
- Department of Nephrology, Monash Health and Department of Medicine and
| | - Xinli Qu
- Department of Anatomy and Developmental Biology, Monash Biomedicine Discovery Institute, Monash University, Clayton, Victoria, Australia
| | - Qing Wang
- Department of Nephrology and
- Guangdong-Hong Kong Joint Laboratory on Immunological and Genetic Kidney Diseases, Guangdong Provincial People’s Hospital and Guangdong Academy of Medical Sciences, Guangzhou, China
| | - Jinjin Fan
- Department of Nephrology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
- Key Laboratory of Nephrology, National Health Commission and Guangdong Province, Guangzhou, China
| | - Xiaoyan Bai
- Department of Nephrology and
- Guangdong-Hong Kong Joint Laboratory on Immunological and Genetic Kidney Diseases, Guangdong Provincial People’s Hospital and Guangdong Academy of Medical Sciences, Guangzhou, China
| | - Zhiming Ye
- Department of Nephrology and
- Guangdong-Hong Kong Joint Laboratory on Immunological and Genetic Kidney Diseases, Guangdong Provincial People’s Hospital and Guangdong Academy of Medical Sciences, Guangzhou, China
| | - Bing Gu
- Department of Clinical Laboratory, Guangdong Provincial People’s Hospital and Guangdong Academy of Medical Sciences, Guangzhou, China
| | - Yue Meng
- Department of Clinical Laboratory, Guangdong Provincial People’s Hospital and Guangdong Academy of Medical Sciences, Guangzhou, China
| | - Xingyuan Zhang
- Department of Biostatistics, UNC Gillings School of Global Public Health, University of North Carolina, Chapel Hill, North Carolina, USA
| | - Di Wu
- Department of Biostatistics, UNC Gillings School of Global Public Health, University of North Carolina, Chapel Hill, North Carolina, USA
| | - Youyang Sia
- School of Life Science, Tsinghua University, Beijing, China
| | - Xiaoyun Jiang
- Department of Paediatrics, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Wei Chen
- Department of Nephrology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
- Key Laboratory of Nephrology, National Health Commission and Guangdong Province, Guangzhou, China
| | - Alexander N. Combes
- Department of Anatomy and Developmental Biology, Monash Biomedicine Discovery Institute, Monash University, Clayton, Victoria, Australia
| | | | - Xueqing Yu
- Department of Nephrology and
- Guangdong-Hong Kong Joint Laboratory on Immunological and Genetic Kidney Diseases, Guangdong Provincial People’s Hospital and Guangdong Academy of Medical Sciences, Guangzhou, China
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12
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Xia X, Li H, Zang J, Cheng S, Du M. Advancements of the Molecular Directed Design and Structure-Activity Relationship of Ferritin Nanocage. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2024; 72:7629-7654. [PMID: 38518374 DOI: 10.1021/acs.jafc.3c09903] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/24/2024]
Abstract
Ferritin nanocages possess remarkable structural properties and biological functions, making them highly attractive for applications in functional materials and biomedicine. This comprehensive review presents an overview of the molecular characteristics, extraction and identification of ferritin, ferritin receptors, as well as the advancements in the directional design of high-order assemblies of ferritin and the applications based on its unique structural properties. Specifically, this Review focuses on the regulation of ferritin assembly from one to three dimensions, leveraging the symmetry of ferritin and modifications on key interfaces. Furthermore, it discusses targeted delivery of nutrition and drugs through facile loading and functional modification of ferritin. The aim of this Review is to inspire the design of micro/nano functional materials using ferritin and the development of nanodelivery vehicles for nutritional fortification and disease treatment.
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Affiliation(s)
- Xiaoyu Xia
- SKL of Marine Food Processing & Safety Control, School of Food Science and Technology, Dalian Polytechnic University, Dalian 116034, China
- National Engineering Research Center of Seafood, Collaborative Innovation Centre of Seafood Deep Processing, Dalian Polytechnic University, Dalian 116034, China
| | - Han Li
- SKL of Marine Food Processing & Safety Control, School of Food Science and Technology, Dalian Polytechnic University, Dalian 116034, China
- National Engineering Research Center of Seafood, Collaborative Innovation Centre of Seafood Deep Processing, Dalian Polytechnic University, Dalian 116034, China
| | - Jiachen Zang
- College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China
| | - Shuzhen Cheng
- SKL of Marine Food Processing & Safety Control, School of Food Science and Technology, Dalian Polytechnic University, Dalian 116034, China
- National Engineering Research Center of Seafood, Collaborative Innovation Centre of Seafood Deep Processing, Dalian Polytechnic University, Dalian 116034, China
| | - Ming Du
- SKL of Marine Food Processing & Safety Control, School of Food Science and Technology, Dalian Polytechnic University, Dalian 116034, China
- National Engineering Research Center of Seafood, Collaborative Innovation Centre of Seafood Deep Processing, Dalian Polytechnic University, Dalian 116034, China
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13
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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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14
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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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15
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Terzi EM, Possemato R. Iron, Copper, and Selenium: Cancer's Thing for Redox Bling. Cold Spring Harb Perspect Med 2024; 14:a041545. [PMID: 37932129 PMCID: PMC10982729 DOI: 10.1101/cshperspect.a041545] [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] [Indexed: 11/08/2023]
Abstract
Cells require micronutrients for numerous basic functions. Among these, iron, copper, and selenium are particularly critical for redox metabolism, and their importance is heightened during oncogene-driven perturbations in cancer. In this review, which particularly focuses on iron, we describe how these micronutrients are carefully chaperoned about the body and made available to tissues, a process that is designed to limit the toxicity of free iron and copper or by-products of selenium metabolism. We delineate perturbations in iron metabolism and iron-dependent proteins that are observed in cancer, and describe the current approaches being used to target iron metabolism and iron-dependent processes.
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Affiliation(s)
- Erdem M Terzi
- Department of Pathology, New York University Grossman School of Medicine, New York, New York 10016, USA
- Laura and Isaac Perlmutter Cancer Center, New York, New York 10016, USA
| | - Richard Possemato
- Department of Pathology, New York University Grossman School of Medicine, New York, New York 10016, USA
- Laura and Isaac Perlmutter Cancer Center, New York, New York 10016, USA
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16
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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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17
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Katz M, Diskin R. The underlying mechanisms of arenaviral entry through matriglycan. Front Mol Biosci 2024; 11:1371551. [PMID: 38516183 PMCID: PMC10955480 DOI: 10.3389/fmolb.2024.1371551] [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: 01/16/2024] [Accepted: 02/15/2024] [Indexed: 03/23/2024] Open
Abstract
Matriglycan, a recently characterized linear polysaccharide, is composed of alternating xylose and glucuronic acid subunits bound to the ubiquitously expressed protein α-dystroglycan (α-DG). Pathogenic arenaviruses, like the Lassa virus (LASV), hijack this long linear polysaccharide to gain cellular entry. Until recently, it was unclear through what mechanisms LASV engages its matriglycan receptor to initiate infection. Additionally, how matriglycan is synthesized onto α-DG by the Golgi-resident glycosyltransferase LARGE1 remained enigmatic. Recent structural data for LARGE1 and for the LASV spike complex informs us about the synthesis of matriglycan as well as its usage as an entry receptor by arenaviruses. In this review, we discuss structural insights into the system of matriglycan generation and eventual recognition by pathogenic viruses. We also highlight the unique usage of matriglycan as a high-affinity host receptor compared with other polysaccharides that decorate cells.
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Affiliation(s)
| | - Ron Diskin
- Department of Chemical and Structural Biology, Weizmann Institute of Science, Rehovot, Israel
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18
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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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19
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Galy B, Conrad M, Muckenthaler M. Mechanisms controlling cellular and systemic iron homeostasis. Nat Rev Mol Cell Biol 2024; 25:133-155. [PMID: 37783783 DOI: 10.1038/s41580-023-00648-1] [Citation(s) in RCA: 110] [Impact Index Per Article: 110.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/31/2023] [Indexed: 10/04/2023]
Abstract
In mammals, hundreds of proteins use iron in a multitude of cellular functions, including vital processes such as mitochondrial respiration, gene regulation and DNA synthesis or repair. Highly orchestrated regulatory systems control cellular and systemic iron fluxes ensuring sufficient iron delivery to target proteins is maintained, while limiting its potentially deleterious effects in iron-mediated oxidative cell damage and ferroptosis. In this Review, we discuss how cells acquire, traffick and export iron and how stored iron is mobilized for iron-sulfur cluster and haem biogenesis. Furthermore, we describe how these cellular processes are fine-tuned by the combination of various sensory and regulatory systems, such as the iron-regulatory protein (IRP)-iron-responsive element (IRE) network, the nuclear receptor co-activator 4 (NCOA4)-mediated ferritinophagy pathway, the prolyl hydroxylase domain (PHD)-hypoxia-inducible factor (HIF) axis or the nuclear factor erythroid 2-related factor 2 (NRF2) regulatory hub. We further describe how these pathways interact with systemic iron homeostasis control through the hepcidin-ferroportin axis to ensure appropriate iron fluxes. This knowledge is key for the identification of novel therapeutic opportunities to prevent diseases of cellular and/or systemic iron mismanagement.
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Affiliation(s)
- Bruno Galy
- German Cancer Research Center (DKFZ), Division of Virus-associated Carcinogenesis (F170), Heidelberg, Germany
| | - Marcus Conrad
- Helmholtz Zentrum München, Institute of Metabolism and Cell Death, Neuherberg, Germany
| | - Martina Muckenthaler
- Department of Paediatric Hematology, Oncology and Immunology, University of Heidelberg, Heidelberg, Germany.
- Molecular Medicine Partnership Unit, University of Heidelberg, Heidelberg, Germany.
- German Centre for Cardiovascular Research (DZHK), Partner site Heidelberg/Mannheim, Heidelberg, Germany.
- Translational Lung Research Center Heidelberg (TLRC), German Center for Lung Research (DZL), University of Heidelberg, Heidelberg, Germany.
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20
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Thimmiraju SR, Kimata JT, Pollet J. Pseudoviruses, a safer toolbox for vaccine development against enveloped viruses. Expert Rev Vaccines 2024; 23:174-185. [PMID: 38164690 DOI: 10.1080/14760584.2023.2299380] [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: 10/13/2023] [Accepted: 12/21/2023] [Indexed: 01/03/2024]
Abstract
INTRODUCTION Pseudoviruses are recombinant, replication-incompetent, viral particles designed to mimic the surface characteristics of native enveloped viruses. They are a safer, and cost-effective research alternative to live viruses. With the potential emergence of the next major infectious disease, more vaccine scientists must become familiar with the pseudovirus platform as a vaccine development tool to mitigate future outbreaks. AREAS COVERED This review aims at vaccine developers to provide a basic understanding of pseudoviruses, list their production methods, and discuss their utility to assess vaccine efficacy against enveloped viral pathogens. We further illustrate their usefulness as wet-lab simulators for emerging mutant variants, and new viruses to help prepare for current and future viral outbreaks, minimizing the need for gain-of-function experiments with highly infectious or lethal enveloped viruses. EXPERT OPINION With this platform, researchers can better understand the role of virus-receptor interactions and entry in infections, prepare for dangerous mutations, and develop effective vaccines.
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Affiliation(s)
- Syamala R Thimmiraju
- Department of Pediatrics, Section of Tropical Medicine, Baylor College of Medicine, Houston, TX, USA
- Texas Children's Hospital Center for Vaccine Development, Baylor College of Medicine, Houston, TX, USA
| | - Jason T Kimata
- Department of Molecular Virology and Microbiology, Baylor College of Medicine, Houston, TX, USA
| | - Jeroen Pollet
- Department of Pediatrics, Section of Tropical Medicine, Baylor College of Medicine, Houston, TX, USA
- Texas Children's Hospital Center for Vaccine Development, Baylor College of Medicine, Houston, TX, USA
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21
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Martínez-Sobrido L, Ye C, de la Torre JC. Plasmid-Based Lassa Virus Reverse Genetics. Methods Mol Biol 2024; 2733:115-131. [PMID: 38064030 DOI: 10.1007/978-1-0716-3533-9_8] [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] [Indexed: 12/18/2023]
Abstract
Several mammarenaviruses cause hemorrhagic fever (HF) disease in humans and pose a significant public health problem in their endemic regions. The Old World (OW) mammarenavirus Lassa virus (LASV) is estimated to infect several hundred thousand people yearly in West Africa, resulting in high numbers of Lassa fever (LF) cases, a disease associated with high morbidity and mortality. No licensed vaccines are available to combat LASV infection, and anti-LASV drug therapy is limited to the off-label use of ribavirin whose efficacy remains controversial. The development of reverse genetics approaches has provided investigators with a powerful approach for the investigation of the molecular, cell biology and pathogenesis of mammarenaviruses. The use of cell-based minigenome systems has allowed examining the cis- and trans-acting factors involved in viral genome replication and gene transcription, assembly, and budding, which has facilitated the identification of several anti-mammarenavirus candidate drugs. Likewise, it is possible now to rescue infectious recombinant mammarenaviruses from cloned cDNAs containing predetermined mutations in their genomes to investigate virus-host interactions and mechanisms of viral pathogenesis. Reverse genetics have also allowed the generation of mammarenaviruses expressing foreign genes to facilitate virus detection, to identify antiviral drugs, and to generate live-attenuated vaccine (LAV) candidates. Likewise, reverse genetics techniques have allowed the generation of single-cycle infectious, reporter-expressing mammarenaviruses to study some aspects of the biology of HF-causing human mammarenavirus without the need of high security biocontainment laboratories. In this chapter, we describe the experimental procedures to generate recombinant (r)LASV using state-of-the-art plasmid-based reverse genetics.
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Affiliation(s)
| | - Chengjin Ye
- Texas Biomedical Research Institute, San Antonio, TX, USA
| | - Juan Carlos de la Torre
- Department of Immunology and Microbial Science, The Scripps Research Institute, La Jolla, CA, USA.
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22
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Huang Q, Chan KY, Lou S, Keyes C, Wu J, Botticello-Romero NR, Zheng Q, Johnston J, Mills A, Brauer PP, Clouse G, Pacouret S, Harvey JW, Beddow T, Hurley JK, Tobey IG, Powell M, Chen AT, Barry AJ, Eid FE, Chan YA, Deverman BE. An AAV capsid reprogrammed to bind human Transferrin Receptor mediates brain-wide gene delivery. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.12.20.572615. [PMID: 38187643 PMCID: PMC10769326 DOI: 10.1101/2023.12.20.572615] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/09/2024]
Abstract
Developing vehicles that efficiently deliver genes throughout the human central nervous system (CNS) will broaden the range of treatable genetic diseases. We engineered an AAV capsid, BI-hTFR1, that binds human Transferrin Receptor (TfR1), a protein expressed on the blood-brain barrier (BBB). BI-hTFR1 was actively transported across a human brain endothelial cell layer and, relative to AAV9, provided 40-50 times greater reporter expression in the CNS of human TFRC knock-in mice. The enhanced tropism was CNS-specific and absent in wild type mice. When used to deliver GBA1, mutations of which cause Gaucher disease and are linked to Parkinson's disease, BI-hTFR1 substantially increased brain and cerebrospinal fluid glucocerebrosidase activity compared to AAV9. These findings establish BI-hTFR1 as a promising vector for human CNS gene therapy.
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Affiliation(s)
- Qin Huang
- Stanley Center for Psychiatric Research, Broad Institute of MIT and Harvard; Cambridge, USA
| | - Ken Y. Chan
- Stanley Center for Psychiatric Research, Broad Institute of MIT and Harvard; Cambridge, USA
| | - Shan Lou
- Stanley Center for Psychiatric Research, Broad Institute of MIT and Harvard; Cambridge, USA
| | - Casey Keyes
- Stanley Center for Psychiatric Research, Broad Institute of MIT and Harvard; Cambridge, USA
| | - Jason Wu
- Stanley Center for Psychiatric Research, Broad Institute of MIT and Harvard; Cambridge, USA
| | | | - Qingxia Zheng
- Stanley Center for Psychiatric Research, Broad Institute of MIT and Harvard; Cambridge, USA
| | - Jencilin Johnston
- Stanley Center for Psychiatric Research, Broad Institute of MIT and Harvard; Cambridge, USA
| | - Allan Mills
- Stanley Center for Psychiatric Research, Broad Institute of MIT and Harvard; Cambridge, USA
| | - Pamela P. Brauer
- Stanley Center for Psychiatric Research, Broad Institute of MIT and Harvard; Cambridge, USA
| | - Gabrielle Clouse
- Stanley Center for Psychiatric Research, Broad Institute of MIT and Harvard; Cambridge, USA
| | - Simon Pacouret
- Stanley Center for Psychiatric Research, Broad Institute of MIT and Harvard; Cambridge, USA
| | - John W. Harvey
- Stanley Center for Psychiatric Research, Broad Institute of MIT and Harvard; Cambridge, USA
| | - Thomas Beddow
- Stanley Center for Psychiatric Research, Broad Institute of MIT and Harvard; Cambridge, USA
| | - Jenna K. Hurley
- Stanley Center for Psychiatric Research, Broad Institute of MIT and Harvard; Cambridge, USA
| | - Isabelle G. Tobey
- Stanley Center for Psychiatric Research, Broad Institute of MIT and Harvard; Cambridge, USA
| | - Megan Powell
- Stanley Center for Psychiatric Research, Broad Institute of MIT and Harvard; Cambridge, USA
| | - Albert T. Chen
- Stanley Center for Psychiatric Research, Broad Institute of MIT and Harvard; Cambridge, USA
| | - Andrew J. Barry
- Stanley Center for Psychiatric Research, Broad Institute of MIT and Harvard; Cambridge, USA
| | - Fatma-Elzahraa Eid
- Stanley Center for Psychiatric Research, Broad Institute of MIT and Harvard; Cambridge, USA
- Department of Systems and Computer Engineering, Faculty of Engineering, Al-Azhar University; Cairo, Egypt
| | - Yujia A. Chan
- Stanley Center for Psychiatric Research, Broad Institute of MIT and Harvard; Cambridge, USA
| | - Benjamin E. Deverman
- Stanley Center for Psychiatric Research, Broad Institute of MIT and Harvard; Cambridge, USA
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23
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Sjöström DJ, Grill B, Ambrosetti E, Veetil AA, Mohlin C, Teixeira AI, Oberdofer G, Bjelic S. Affinity Maturated Transferrin Receptor Apical Domain Blocks Machupo Virus Glycoprotein Binding. J Mol Biol 2023; 435:168262. [PMID: 37678707 DOI: 10.1016/j.jmb.2023.168262] [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: 07/03/2023] [Revised: 08/21/2023] [Accepted: 08/29/2023] [Indexed: 09/09/2023]
Abstract
Transferrin receptor 1 (TfR) delivers iron across cellular membranes by shuttling the ion carrier protein transferrin. This ability to deliver large protein ligands inside cells is taken advantage of by pathogens to infiltrate human cells. Notably, the receptor's outermost ectodomain, the apical domain, is used as a point of attachment for several viruses including hemorrhagic arenaviruses. To better understand interactions with the receptor it would be advantageous to probe sequence determinants in the apical domain with viral spike proteins. Here, we carried out affinity maturation of our computationally designed apical domain from human TfR to identify underlying driving forces that lead to better binding. The improved variants were confirmed by in vitro surface plasmon resonance measurements with dissociation constants obtained in the lower nanomolar range. It was found that the strong binding affinities for the optimized variants matched the strength of interactions with the native receptor. The structure of the best variant was determined experimentally indicating that the conformational change in the hairpin binding motif at the protein-protein interface plays a crucial role. The experimental methodology can be straightforwardly applied to other arenavirus or pathogens that use the apical domain. It can further be useful to probe host-virus compatibility or therapeutic strategies based on the transferrin receptor decoys.
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Affiliation(s)
- Dick J Sjöström
- Department of Chemistry and Biomedical Sciences, Linnaeus University, Kalmar, Sweden
| | - Birgit Grill
- Department of Biochemistry, Graz University of Technology, Graz, Austria
| | - Elena Ambrosetti
- Department of Medical Biochemistry and Biophysics, Karolinska Institutet, Sweden
| | | | - Camilla Mohlin
- Department of Chemistry and Biomedical Sciences, Linnaeus University, Kalmar, Sweden
| | - Ana I Teixeira
- Department of Medical Biochemistry and Biophysics, Karolinska Institutet, Sweden
| | - Gustav Oberdofer
- Department of Biochemistry, Graz University of Technology, Graz, Austria
| | - Sinisa Bjelic
- Department of Chemistry and Biomedical Sciences, Linnaeus University, Kalmar, Sweden.
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24
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Kimura M, Matsuoka R, Taniguchi S, Maruyama J, Paessler S, Oka S, Yamashita A, Fukuhara T, Matsuura Y, Tani H. Inhibitors of cannabinoid receptor 1 suppress the cellular entry of Lujo virus. Virology 2023; 587:109867. [PMID: 37633192 DOI: 10.1016/j.virol.2023.109867] [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: 06/19/2023] [Revised: 08/03/2023] [Accepted: 08/09/2023] [Indexed: 08/28/2023]
Abstract
Lujo virus (LUJV), which belongs to Mammarenavirus, family Arenaviridae, has emerged as a pathogen causing severe hemorrhagic fever with high mortality. Currently, there are no effective treatments for arenaviruses, including LUJV. Here, we screened chemical compound libraries of Food and Drug Administration (FDA)-approved drugs and G protein-coupled receptor-associated drugs to identify effective antivirals against LUJV targeting cell entry using a vesicular stomatitis virus-based pseudotyped virus bearing the LUJV envelope glycoprotein (GP). Cannabinoid receptor 1 (CB1) antagonists, such as rimonabant, AM251 and AM281, have been identified as robust inhibitors of LUJV entry. The IC50 of rimonabant was 0.26 and 0.53 μM in Vero and Huh7 cells, respectively. Analysis of the cell fusion activity of the LUJV GP in the presence of CB1 inhibitors revealed that these inhibitors suppressed the fusion activity of the LUJV GP. Moreover, rimonabant, AM251 and AM281 reduced the infectivity of authentic LUJV in vitro, suggesting that the antiviral activity of CB1 antagonists against LUJV is mediated, at least in part, by inhibition of the viral entry, especially, membrane fusion. These findings suggest promising candidates for developing new therapies against LUJV infections.
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Affiliation(s)
- Miyuki Kimura
- Department of Microbiology, Faculty of Medicine, Academic Assembly, University of Toyama, Toyama, 930-0194, Japan
| | - Risa Matsuoka
- Department of Microbiology, Faculty of Medicine, Academic Assembly, University of Toyama, Toyama, 930-0194, Japan
| | - Satoshi Taniguchi
- Department of Pathology, University of Texas Medical Branch, Galveston, TX, 77555, USA; Department of Virology I, National Institute of Infectious Diseases, Tokyo, 162-8640, Japan
| | - Junki Maruyama
- Department of Pathology, University of Texas Medical Branch, Galveston, TX, 77555, USA
| | - Slobodan Paessler
- Department of Pathology, University of Texas Medical Branch, Galveston, TX, 77555, USA
| | - Saori Oka
- Faculty of Pharma-Science, Teikyo University, Tokyo, Japan
| | | | - Takasuke Fukuhara
- Department of Microbiology and Immunology, Graduate School of Medicine, Hokkaido University, Sapporo, Japan; Laboratory of Virus Control, Research Institute for Microbial Diseases, Osaka University, Suita, Japan
| | - Yoshiharu Matsuura
- Laboratory of Virus Control, Research Institute for Microbial Diseases, Osaka University, Suita, Japan; Center for Infectious Disease Education and Research, Osaka University, Suita, Japan
| | - Hideki Tani
- Department of Microbiology, Faculty of Medicine, Academic Assembly, University of Toyama, Toyama, 930-0194, Japan; Department of Virology I, National Institute of Infectious Diseases, Tokyo, 162-8640, Japan; Department of Virology, Toyama Institute of Health, Toyama, 939-0363, Japan.
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25
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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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26
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Huang S, Wu Z, Zhou B, Jiang X, Lavillette D, Fan G. Heat-Denatured Lysozyme is a Novel Potential Non-alcoholic Disinfectant Against Respiratory Virus. FOOD AND ENVIRONMENTAL VIROLOGY 2023; 15:212-223. [PMID: 37155116 PMCID: PMC10166042 DOI: 10.1007/s12560-023-09556-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/23/2022] [Accepted: 04/20/2023] [Indexed: 05/10/2023]
Abstract
Respiratory diseases are significant recurrent threats to global public health. Since the 1918 Spanish flu pandemic, seasonal influenza viruses continue to cause epidemics around the world each year. More recently, the COVID-19 global pandemic conducted a public health crisis with more than 6 million deaths and it also severely affected the global economy. Due to the phenomenon that people get infection from objects carrying viruses, it has aroused people's attention to home disinfection. As there is no ideal existing common domestic disinfectant, new and safer antiviral disinfectants are urgently needed. Lysozyme is a natural antibacterial agent widespread in nature and widely used in healthcare and food industry because of is recognized safety. Recently, it has been shown that thermally denatured lysozyme has the ability to kill murine norovirus and hepatitis A virus. In our study, we also demonstrated that heat-denatured lysozyme (HDLz) had an antiviral effect against H1N1 influenza A virus, and we optimized its antiviral activities by testing different heating denaturation conditions, to generalize this property, using pseudotype virus neutralization assay, we found that HDLz can also inhibit the entry of H5N1, H5N6, and H7N1 avian influenza viruses as well as SARS-CoV and SARS-CoV-2 particles in cell with IC50 at the ng/mL range. Finally, using western blot analysis, we provide evidence that HDLz polymerization correlates with antiviral effect, which may be a precious possible quality control test. Altogether, our data support HDLz as a powerful anti-respiratory virus disinfectant as a sole or additive of current disinfectants to reduce concentration of toxic component.
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Affiliation(s)
- Suqiong Huang
- Chongqing Research Center for Pharmaceutical Engineering, School of Pharmacy, Chongqing Medical University, Yuzhong District, No. 1 Yixueyuan Road, Chongqing, 400016 People’s Republic of China
- Department of Pharmacy, Sichuan Provincial People’s Hospital Qionglai Hospital, Medical Center Hospital of Qionglai City, No. 172 Xinglin Road, Qionglai City, Chengdu, Sichuan Province 611530 People’s Republic of China
| | - Zhenghua Wu
- Department of Clinical Pharmacy, Shanghai General Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, 200080 People’s Republic of China
- School of Pharmacy, Shanghai Jiao Tong University, Shanghai, 200240 People’s Republic of China
| | - Bingjie Zhou
- University of CAS, Beijing, 101408 China
- CAS Key Laboratory of Molecular Virology & Immunology, Institut Pasteur of Shanghai CAS, 320 Yueyang Road, Shanghai, 200031 China
| | - Xinhui Jiang
- Chongqing Research Center for Pharmaceutical Engineering, School of Pharmacy, Chongqing Medical University, Yuzhong District, No. 1 Yixueyuan Road, Chongqing, 400016 People’s Republic of China
| | - Dimitri Lavillette
- CAS Key Laboratory of Molecular Virology & Immunology, Institut Pasteur of Shanghai CAS, 320 Yueyang Road, Shanghai, 200031 China
- Pasteurien College, Soochow University, Jiangsu, 215006 China
| | - Guorong Fan
- Chongqing Research Center for Pharmaceutical Engineering, School of Pharmacy, Chongqing Medical University, Yuzhong District, No. 1 Yixueyuan Road, Chongqing, 400016 People’s Republic of China
- Department of Clinical Pharmacy, Shanghai General Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, 200080 People’s Republic of China
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27
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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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28
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Chen J, Fu J, Zhao S, Zhang X, Chao Y, Pan Q, Sun H, Zhang J, Li B, Xue T, Li J, Liu C. Free Radical and Viral Infection: A Review from the Perspective of Ferroptosis. Vet Sci 2023; 10:456. [PMID: 37505861 PMCID: PMC10384322 DOI: 10.3390/vetsci10070456] [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: 06/05/2023] [Revised: 06/30/2023] [Accepted: 07/06/2023] [Indexed: 07/29/2023] Open
Abstract
Free radicals, including reactive oxygen species (ROS) and reactive nitrogen species (RNS), play critical roles in various physiological activities such as cell differentiation, apoptosis, and vascular tension when existing in cells at low levels. However, excessive amounts of free radicals are harmful, causing DNA damage, lipid peroxidation, protein degeneration, and abnormal cell death. Certain viral infections induce cells to produce excessive free radicals, which in multiple ways help the virus to replicate, mature, and exit. Iron is a necessary element for many intracellular enzymes, involved in both cellular activities and viral replication. Ferroptosis, a programmed cell death mode distinct from apoptosis, necrosis, and pyroptosis, is characterized by lipid peroxide accumulation and damage to the antioxidant system, affecting many cellular processes. Viral infection commonly manifests as decreased glutathione (GSH) content and down-regulated glutathione peroxidase 4 (GPX4) activity, similar to ferroptosis. Recent studies have suggested a possible relationship among free radicals, viral infections and ferroptosis. This review aims to elucidate the molecular mechanism linking free radicals and ferroptosis during viral infections and provide a new theoretical basis for studying viral pathogenesis and control.
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Affiliation(s)
- Jun Chen
- College of Veterinary Medicine, Yangzhou University, Yangzhou 225009, China
| | - Jinping Fu
- Institute of Veterinary Medicine, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China
- Key Laboratory of Veterinary Biological Engineering and Technology, Ministry of Agriculture, Nanjing 210014, China
- Key Laboratory of Veterinary Diagnosis, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China
| | - Sha Zhao
- Institute of Veterinary Medicine, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China
- Key Laboratory of Veterinary Biological Engineering and Technology, Ministry of Agriculture, Nanjing 210014, China
- Key Laboratory of Veterinary Diagnosis, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China
| | - Xiaoxi Zhang
- Institute of Veterinary Medicine, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China
- Key Laboratory of Veterinary Biological Engineering and Technology, Ministry of Agriculture, Nanjing 210014, China
- Key Laboratory of Veterinary Diagnosis, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China
| | - Yuyang Chao
- Institute of Veterinary Medicine, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China
- Key Laboratory of Veterinary Biological Engineering and Technology, Ministry of Agriculture, Nanjing 210014, China
- Key Laboratory of Veterinary Diagnosis, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China
| | - Qunxing Pan
- Institute of Veterinary Medicine, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China
- Key Laboratory of Veterinary Biological Engineering and Technology, Ministry of Agriculture, Nanjing 210014, China
- Key Laboratory of Veterinary Diagnosis, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China
| | - Huawei Sun
- Institute of Veterinary Medicine, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China
- Key Laboratory of Veterinary Biological Engineering and Technology, Ministry of Agriculture, Nanjing 210014, China
- Key Laboratory of Veterinary Diagnosis, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China
| | - Jingfeng Zhang
- Institute of Veterinary Medicine, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China
- Key Laboratory of Veterinary Biological Engineering and Technology, Ministry of Agriculture, Nanjing 210014, China
- Key Laboratory of Veterinary Diagnosis, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China
| | - Bin Li
- Institute of Veterinary Medicine, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China
- Key Laboratory of Veterinary Biological Engineering and Technology, Ministry of Agriculture, Nanjing 210014, China
- Key Laboratory of Veterinary Diagnosis, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China
| | - Tao Xue
- College of Medicine, Linyi University, Linyi 276000, China
| | - Jingui Li
- College of Veterinary Medicine, Yangzhou University, Yangzhou 225009, China
| | - Chuanmin Liu
- Institute of Veterinary Medicine, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China
- Key Laboratory of Veterinary Biological Engineering and Technology, Ministry of Agriculture, Nanjing 210014, China
- Key Laboratory of Veterinary Diagnosis, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China
- College of Medicine, Linyi University, Linyi 276000, China
- School of Life Sciences, Jiangsu University, Zhenjiang 212013, China
- College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, China
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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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30
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Xu QR, Liu JL, Zhu RR, Huang WX, Huang H, Liu JC, Xu XP, Zhou XL. NSD2 promotes pressure overload-induced cardiac hypertrophy via activating circCmiss1/TfR1/ferroptosis signaling. Life Sci 2023:121873. [PMID: 37352916 DOI: 10.1016/j.lfs.2023.121873] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2023] [Revised: 06/14/2023] [Accepted: 06/16/2023] [Indexed: 06/25/2023]
Abstract
Heart failure typically occurs early in the clinical course of sustained cardiac hypertrophy that is accompanied by maladaptive remodeling of the heart. It is critical to discover new mechanisms and effective therapeutic targets to prevent and cure pathological cardiac hypertrophy. The objective of the study was to evaluate the effects of circRNAs on NSD2-induced ventricular remodeling. We screened the dysregulated circRNAs in normal or NSD2-/- C57BL/6 mice with or without transverse aortic constriction (TAC), and found that circCmss1 significantly increased in normal TAC mice, but decreased in NSD2-/- TAC mice. Angiotensin II(Ang II)induced neonatal cardiomyocyte hypertrophy in vitro and the pressure overload-induced cardiac hypertrophy in vivo can be reduced by Knocking down circCmss1. We further investigated the downstream signaling of circCmss1 in the progression of NSD2-promoted ventricular remodeling and discovered that circCmss1 could interact with a transcription factor EIF4A3 and induce the expression of transferrin receptor 1 (TfR1), thus activating the ferroptosis in cardiomyocytes. This study highlights the significance of NSD2 activation of circCmss1/EIF4A3/TfR1 as therapeutic targets for treating pathological myocardial hypertrophy.
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Affiliation(s)
- Qi-Rong Xu
- Department of Cardiovascular Surgery, The First Affiliated Hospital, Nanchang University, Nanchang, China
| | - Jin-Long Liu
- Institute of Translational Medicine, Shanghai University, Shanghai, China
| | - Rong-Rong Zhu
- Department of Cardiology, Jiangxi Hospital of Traditional Chinese Medicine, Jiangxi University of Chinese Medicine, China
| | - Wen-Xiong Huang
- Department of Cardiovascular Surgery, The First Affiliated Hospital, Nanchang University, Nanchang, China
| | - Huang Huang
- Department of Cardiovascular Surgery, The First Affiliated Hospital, Nanchang University, Nanchang, China
| | - Ji-Chun Liu
- Department of Cardiovascular Surgery, The First Affiliated Hospital, Nanchang University, Nanchang, China
| | - Xin-Ping Xu
- Jiangxi Institute of Respiratory Disease, The First Affiliated Hospital, Nanchang University, China.
| | - Xue-Liang Zhou
- Department of Cardiovascular Surgery, The First Affiliated Hospital, Nanchang University, Nanchang, China.
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31
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Mazel-Sanchez B, Niu C, Williams N, Bachmann M, Choltus H, Silva F, Serre-Beinier V, Karenovics W, Iwaszkiewicz J, Zoete V, Kaiser L, Hartley O, Wehrle-Haller B, Schmolke M. Influenza A virus exploits transferrin receptor recycling to enter host cells. Proc Natl Acad Sci U S A 2023; 120:e2214936120. [PMID: 37192162 PMCID: PMC10214170 DOI: 10.1073/pnas.2214936120] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Accepted: 04/07/2023] [Indexed: 05/18/2023] Open
Abstract
Influenza A virus (IAV) enters host cells mostly through clathrin-dependent receptor-mediated endocytosis. A single bona fide entry receptor protein supporting this entry mechanism remains elusive. Here we performed proximity ligation of biotin to host cell surface proteins in the vicinity of attached trimeric hemagglutinin-HRP and characterized biotinylated targets using mass spectrometry. This approach identified transferrin receptor 1 (TfR1) as a candidate entry protein. Genetic gain-of-function and loss-of-function experiments, as well as in vitro and in vivo chemical inhibition, confirmed the functional involvement of TfR1 in IAV entry. Recycling deficient mutants of TfR1 do not support entry, indicating that TfR1 recycling is essential for this function. The binding of virions to TfR1 via sialic acids confirmed its role as a directly acting entry factor, but unexpectedly even headless TfR1 promoted IAV particle uptake in trans. TIRF microscopy localized the entering virus-like particles in the vicinity of TfR1. Our data identify TfR1 recycling as a revolving door mechanism exploited by IAV to enter host cells.
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Affiliation(s)
- Beryl Mazel-Sanchez
- Department of Microbiology and Molecular Medicine, Faculty of Medicine, University of Geneva, 1211Geneva, Switzerland
| | - Chengyue Niu
- Department of Microbiology and Molecular Medicine, Faculty of Medicine, University of Geneva, 1211Geneva, Switzerland
| | - Nathalia Williams
- Department of Microbiology and Molecular Medicine, Faculty of Medicine, University of Geneva, 1211Geneva, Switzerland
| | - Michael Bachmann
- Department of Cell Physiology and Metabolism, Faculty of Medicine, University of Geneva, 1211Geneva, Switzerland
| | - Hélèna Choltus
- Department of Microbiology and Molecular Medicine, Faculty of Medicine, University of Geneva, 1211Geneva, Switzerland
| | - Filo Silva
- Department of Microbiology and Molecular Medicine, Faculty of Medicine, University of Geneva, 1211Geneva, Switzerland
| | | | | | - Justyna Iwaszkiewicz
- Molecular Modeling Group, Swiss Institute of Bioinformatics, 1015Lausanne, Switzerland
| | - Vincent Zoete
- Molecular Modeling Group, Swiss Institute of Bioinformatics, 1015Lausanne, Switzerland
- Computer-Aided Molecular Engineering Group, Department of Oncology (University of Lausanne and the Lausanne University Hospital), Ludwig Institute for Cancer Research Lausanne, 1066Épalinges, Switzerland
| | - Laurent Kaiser
- Department of Microbiology and Molecular Medicine, Faculty of Medicine, University of Geneva, 1211Geneva, Switzerland
- Department of Medicine, Faculty of Medicine, University of Geneva, 1211 Geneva, Switzerland
- Geneva Centre for Emerging Viral Diseases, Geneva University Hospitals, 1205Geneva, Switzerland
- Division of Infectious Diseases, Geneva University Hospitals, 1205Geneva, Switzerland
| | - Oliver Hartley
- Department of Pathology and Immunology, Faculty of Medicine, University of Geneva, 1211Geneva, Switzerland
| | - Bernhard Wehrle-Haller
- Department of Cell Physiology and Metabolism, Faculty of Medicine, University of Geneva, 1211Geneva, Switzerland
| | - Mirco Schmolke
- Department of Microbiology and Molecular Medicine, Faculty of Medicine, University of Geneva, 1211Geneva, Switzerland
- Geneva Center of Inflammation Research, University of Geneva, 1211Geneva, Switzerland
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Diskin R. A structural perspective on the evolution of viral/cellular macromolecular complexes within the arenaviridae family of viruses. Curr Opin Struct Biol 2023; 79:102561. [PMID: 36857816 DOI: 10.1016/j.sbi.2023.102561] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2022] [Revised: 01/16/2023] [Accepted: 01/30/2023] [Indexed: 03/02/2023]
Abstract
Viruses are obligatory parasites that can replicate only inside host cells. Therefore, the evolutionary drive to enter cells is immense, leading to diversification in the cell-entry strategies of viruses. One of the most critical steps for cell entry is the recognition of the target cell, a process driven by the formation of viral/host macromolecular complexes. The accumulation of recent structural data for viruses within the arenaviridae family allows us to examine how different viral species from the same viral family utilize evolutionarily-related viral glycoproteins to engage with a variety of different cellular receptors. These structural data, compared to other viruses from the coronaviridae family, hint about possible routes that such viruses use for evolving new receptor-binding capabilities, allowing them to switch from one receptor to another.
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Affiliation(s)
- Ron Diskin
- Department of Chemical and Structural Biology, Weizmann Institute of Science, Rehovot, 7610001, Israel.
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33
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Transferrin Receptor Protein 1 Cooperates with mGluR2 To Mediate the Internalization of Rabies Virus and SARS-CoV-2. J Virol 2023; 97:e0161122. [PMID: 36779763 PMCID: PMC9972945 DOI: 10.1128/jvi.01611-22] [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] [Indexed: 02/14/2023] Open
Abstract
Identification of bona fide functional receptors and elucidation of the mechanism of receptor-mediated virus entry are important to reveal targets for developing therapeutics against rabies virus (RABV) and severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). Our previous studies suggest that metabotropic glutamate receptor subtype 2 (mGluR2) functions as an entry receptor for RABV in vitro, and is an important internalization factor for SARS-CoV-2 in vitro and in vivo. Here, we demonstrate that mGluR2 facilitates RABV internalization in vitro and infection in vivo. We found that transferrin receptor 1 (TfR1) interacts with mGluR2 and internalizes with mGluR2 and RABV in the same clathrin-coated pit. Knockdown of TfR1 blocks agonist-triggered internalization of mGluR2. Importantly, TfR1 also interacts with the SARS-CoV-2 spike protein and is important for SARS-CoV-2 internalization. Our findings identify a novel axis (mGluR2-TfR1 axis) used by RABV and SARS-CoV-2 for entry, and reveal TfR1 as a potential target for therapeutics against RABV and SARS-CoV-2. IMPORTANCE We previously found that metabotropic glutamate receptor subtype 2 (mGluR2) is an entry receptor for RABV in vitro, and an important internalization factor for SARS-CoV-2 in vitro and in vivo. However, whether mGluR2 is required for RABV infection in vivo was unknown. In addition, how mGluR2 mediates the internalization of RABV and SARS-CoV-2 needed to be resolved. Here, we found that mGluR2 gene knockout mice survived a lethal challenge with RABV. To our knowledge, mGluR2 is the first host factor to be definitively shown to play an important role in RABV street virus infection in vivo. We further found that transferrin receptor protein 1 (TfR1) directly interacts and cooperates with mGluR2 to regulate the endocytosis of RABV and SARS-CoV-2. Our study identifies a novel axis (mGluR2-TfR1 axis) used by RABV and SARS-CoV-2 for entry and opens a new door for the development of therapeutics against RABV and SARS-CoV-2.
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Abstract
Rabies virus (RABV) is a prototypical neurotropic virus that causes rabies in human and animals with an almost 100% mortality rate. Once RABV enters the central nervous system, no treatment is proven to prevent death. RABV glycoprotein (G) interacts with cell surface receptors and then enters cells via clathrin-mediated endocytosis (CME); however, the key host factors involved remain largely unknown. Here, we identified transferrin receptor 1 (TfR1), a classic receptor that undergoes CME, as an entry factor for RABV. TfR1 interacts with RABV G and is involved in the endocytosis of RABV. An antibody against TfR1 or the TfR1 ectodomain soluble protein significantly blocked RABV infection in HEK293 cells, N2a cells, and mouse primary neuronal cells. We further found that the endocytosis of TfR1 is coupled with the endocytosis of RABV and that TfR1 and RABV are transported to early and late endosomes. Our results suggest that RABV hijacks the transport pathway of TfR1 for entry, thereby deepening our understanding of the entry mechanism of RABV. IMPORTANCE For most viruses, cell entry involves engagement with many distinct plasma membrane components, each of which is essential. After binding to its specific receptor(s), rabies virus (RABV) enters host cells through the process of clathrin-mediated endocytosis. However, whether the receptor-dependent clathrin-mediated endocytosis of RABV requires other plasma membrane components remain largely unknown. Here, we demonstrate that transferrin receptor 1 (TfR1) is a functional entry factor for RABV infection. The endocytosis of RABV is coupled with the endocytosis of TfR1. Our results indicate that RABV hijacks the transport pathway of TfR1 for entry, which deepens our understanding of the entry mechanism of RABV.
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35
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Reiter S, Gärtner S, Decker K, Pöhlmann S, Winkler M. Development of immortalized rhesus macaque kidney cells supporting infection with a panel of viruses. PLoS One 2023; 18:e0284048. [PMID: 37146034 PMCID: PMC10162512 DOI: 10.1371/journal.pone.0284048] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2022] [Accepted: 03/22/2023] [Indexed: 05/07/2023] Open
Abstract
Non-human primate (NHP)-based model systems faithfully reproduce various viral diseases including Ebola, influenza, AIDS and Zika. However, only a small number of NHP cell lines are available and generation of additional cell lines could help to refine these models. We immortalized rhesus macaque kidney cells by lentiviral transduction with a vector encoding telomerase reverse transcriptase (TERT) and report the generation of three TERT-immortalized cell lines derived from rhesus macaque kidney. Expression of the kidney podocyte marker podoplanin on these cells was demonstrated by flow cytometry. Quantitative real-time PCR (qRT-PCR) was employed to demonstrate induction of MX1 expression upon stimulation with interferon (IFN) or viral infection, suggesting a functional IFN system. Further, the cell lines were susceptible to entry driven by the glycoproteins of vesicular stomatitis virus, influenza A virus, Ebola virus, Nipah virus and Lassa virus as assessed by infection with retroviral pseudotypes. Finally, these cells supported growth of Zika virus and the primate simplexviruses Cercopithecine alphaherpesvirus 2 and Papiine alphaherpesvirus 2. In summary, we developed IFN-responsive rhesus macaque kidney cell lines that allowed entry driven by diverse viral glycoproteins and were permissive to infection with Zika virus and primate simplexviruses. These cell lines will be useful for efforts to analyze viral infections of the kidney in macaque models.
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Affiliation(s)
- Stefanie Reiter
- Infection Biology Unit, German Primate Center, Leibniz Institute for Primate Research, Göttingen, Germany
| | - Sabine Gärtner
- Infection Biology Unit, German Primate Center, Leibniz Institute for Primate Research, Göttingen, Germany
| | - Katharina Decker
- Infection Biology Unit, German Primate Center, Leibniz Institute for Primate Research, Göttingen, Germany
| | - Stefan Pöhlmann
- Infection Biology Unit, German Primate Center, Leibniz Institute for Primate Research, Göttingen, Germany
- Faculty of Biology and Psychology, Georg-August-University Göttingen, Göttingen, Germany
| | - Michael Winkler
- Infection Biology Unit, German Primate Center, Leibniz Institute for Primate Research, Göttingen, Germany
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36
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Stachura P, Stencel O, Lu Z, Borkhardt A, Pandyra AA. Arenaviruses: Old viruses present new solutions for cancer therapy. Front Immunol 2023; 14:1110522. [PMID: 37033933 PMCID: PMC10079900 DOI: 10.3389/fimmu.2023.1110522] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2022] [Accepted: 03/13/2023] [Indexed: 04/11/2023] Open
Abstract
Viral-based cancer therapies have tremendous potential, especially in the context of treating poorly infiltrated cold tumors. However, in tumors with intact anti-viral interferon (IFN) pathways, while some oncolytic viruses induce strong innate and adaptive immune responses, they are neutralized before exerting their therapeutic effect. Arenaviruses, particularly the lymphocytic choriomeningitis virus (LCMV) is a noncytopathic virus with preferential cancer tropism and evolutionary mechanisms to escape the immune system for longer and to block early clearance. These escape mechanisms include inhibition of the MAVS dependent IFN pathway and spike protein antigen masking. Regarding its potential for cancer treatment, LCMV is therefore able to elicit long-term responses within the tumor microenvironment (TME), boost anti-tumor immune responses and polarize poorly infiltrating tumors towards a hot phenotype. Other arenaviruses including the attenuated Junin virus vaccine also have anti-tumor effects. Furthermore, the LCMV and Pichinde arenaviruses are currently being used to create vector-based vaccines with attenuated but replicating virus. This review focuses on highlighting the potential of arenaviruses as anti-cancer therapies. This includes providing a molecular understanding of its tropism as well as highlighting past and present preclinical and clinical applications of noncytophatic arenavirus therapies and their potential in bridging the gap in the treatment of cancers weakly responsive or unresponsive to oncolytic viruses. In summary, arenaviruses represent promising new therapies to broaden the arsenal of anti-tumor therapies for generating an immunogenic tumor microenvironment.
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Affiliation(s)
- Paweł Stachura
- Department of Pediatric Oncology, Hematology and Clinical Immunology, Medical Faculty, Heinrich-Heine-University, Düsseldorf, Germany
- Department of Molecular Medicine II, Medical Faculty, Heinrich Heine University, Düsseldorf, Germany
| | - Olivia Stencel
- Department of Pediatric Oncology, Hematology and Clinical Immunology, Medical Faculty, Heinrich-Heine-University, Düsseldorf, Germany
| | - Zhe Lu
- Department of Pediatric Oncology, Hematology and Clinical Immunology, Medical Faculty, Heinrich-Heine-University, Düsseldorf, Germany
| | - Arndt Borkhardt
- Department of Pediatric Oncology, Hematology and Clinical Immunology, Medical Faculty, Heinrich-Heine-University, Düsseldorf, Germany
| | - Aleksandra A. Pandyra
- Department of Pediatric Oncology, Hematology and Clinical Immunology, Medical Faculty, Heinrich-Heine-University, Düsseldorf, Germany
- *Correspondence: Aleksandra A. Pandyra,
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37
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O’Donohue M, Saharia J, Bandara N, Alexandrakis G, Kim MJ. Use of a solid-state nanopore for profiling the transferrin receptor protein and distinguishing between transferrin receptor and its ligand protein. Electrophoresis 2023; 44:349-359. [PMID: 36401829 PMCID: PMC9839655 DOI: 10.1002/elps.202200147] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2022] [Revised: 10/20/2022] [Accepted: 11/17/2022] [Indexed: 11/20/2022]
Abstract
A nanopore device is capable of providing single-molecule level information of an analyte as they translocate through the sensing aperture-a nanometer-sized through-hole-under the influence of an applied electric field. In this study, a silicon nitride (Six Ny )-based nanopore was used to characterize the human serum transferrin receptor protein (TfR) under various applied voltages. The presence of dimeric forms of TfR was found to decrease exponentially as the applied electric field increased. Further analysis of monomeric TfR also revealed that its unfolding behaviors were positively dependent on the applied voltage. Furthermore, a comparison between the data of monomeric TfR and its ligand protein, human serum transferrin (hSTf), showed that these two protein populations, despite their nearly identical molecular weights, could be distinguished from each other by means of a solid-state nanopore (SSN). Lastly, the excluded volumes of TfR were experimentally determined at each voltage and were found to be within error of their theoretical values. The results herein demonstrate the successful application of an SSN for accurately classifying monomeric and dimeric molecules while the two populations coexist in a heterogeneous mixture.
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Affiliation(s)
- Matthew O’Donohue
- Applied Science Program, Southern Methodist University, Dallas, TX 75275, USA
| | - Jugal Saharia
- Department of Mechanical Engineering, Southern Methodist University, Dallas, TX 75275, USA
| | - Nuwan Bandara
- Department of Mechanical Engineering, Southern Methodist University, Dallas, TX 75275, USA
| | - Georgios Alexandrakis
- Department of Bioengineering, University of Texas at Arlington, Arlington, TX 76019, USA
| | - Min Jun Kim
- Applied Science Program, Southern Methodist University, Dallas, TX 75275, USA
- Department of Mechanical Engineering, Southern Methodist University, Dallas, TX 75275, USA
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38
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Pseudotyped Viruses for Mammarenavirus. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2023; 1407:279-297. [PMID: 36920703 DOI: 10.1007/978-981-99-0113-5_15] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/16/2023]
Abstract
Mammarenaviruses are classified into New World arenaviruses (NW) and Old World arenaviruses (OW). The OW arenaviruses include the first discovered mammarenavirus-lymphocytic choriomeningitis virus (LCMV) and the highly lethal Lassa virus (LASV). Mammarenaviruses are transmitted to human by rodents, resulting in severe acute infections and hemorrhagic fever. Pseudotyped viruses have been widely used as a tool in the study of mammarenaviruses. HIV-1, SIV, FIV-based lentiviral vectors, VSV-based vectors, MLV-based vectors, and reverse genetic approaches have been applied in the construction of pseudotyped mammarenaviruses. Pseudotyped mammarenaviruses are commonly used in receptor research, neutralizing antibody detection, inhibitor screening, viral virulence studies, functional analysis of N-linked glycans, and studies of viral infection, endocytosis, and fusion mechanisms.
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39
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Holzerland J, Fénéant L, Groseth A. Regulation of Stress-Activated Kinases in Response to Tacaribe Virus Infection and Its Implications for Viral Replication. Viruses 2022; 14:v14092018. [PMID: 36146824 PMCID: PMC9505436 DOI: 10.3390/v14092018] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2022] [Revised: 09/06/2022] [Accepted: 09/08/2022] [Indexed: 11/23/2022] Open
Abstract
Arenaviruses include important zoonotic pathogens that cause hemorrhagic fever (e.g., Junín virus; JUNV) as well as other viruses that are closely related but apathogenic (e.g., Tacaribe virus; TCRV). We have found that, while TCRV and JUNV differ in their ability to induce apoptosis in infected cells, due to active inhibition of caspase activation by the JUNV nucleoprotein, both viruses trigger similar upstream pro-apoptotic signaling events, including the activation/phosphorylation of p53. In the case of TCRV, the pro-apoptotic factor Bad is also phosphorylated (leading to its inactivation). These events clearly implicate upstream kinases in regulating the induction of apoptosis. Consistent with this, here we show activation in TCRV-infected cells of the stress-activated protein kinases p38 and JNK, which are known to regulate p53 activation, as well as the downstream kinase MK2 and transcription factor c-Jun. We also observed the early transient activation of Akt, but not Erk. Importantly, the chemical inhibition of Akt, p38, JNK and c-Jun all dramatically reduced viral growth, even though we have shown that inhibition of apoptosis itself does not. This indicates that kinase activation is crucial for viral infection, independent of its downstream role in apoptosis regulation, a finding that has the potential to shed further light on the determinants of arenavirus pathogenesis, as well as to inform future therapeutic approaches.
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40
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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: 36] [Impact Index Per Article: 18.0] [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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Roelle SM, Shukla N, Pham AT, Bruchez AM, Matreyek KA. Expanded ACE2 dependencies of diverse SARS-like coronavirus receptor binding domains. PLoS Biol 2022; 20:e3001738. [PMID: 35895696 PMCID: PMC9359572 DOI: 10.1371/journal.pbio.3001738] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2021] [Revised: 08/08/2022] [Accepted: 07/01/2022] [Indexed: 11/18/2022] Open
Abstract
Viral spillover from animal reservoirs can trigger public health crises and cripple the world economy. Knowing which viruses are primed for zoonotic transmission can focus surveillance efforts and mitigation strategies for future pandemics. Successful engagement of receptor protein orthologs is necessary during cross-species transmission. The clade 1 sarbecoviruses including Severe Acute Respiratory Syndrome-related Coronavirus (SARS-CoV) and SARS-CoV-2 enter cells via engagement of angiotensin converting enzyme-2 (ACE2), while the receptor for clade 2 and clade 3 remains largely uncharacterized. We developed a mixed cell pseudotyped virus infection assay to determine whether various clades 2 and 3 sarbecovirus spike proteins can enter HEK 293T cells expressing human or Rhinolophus horseshoe bat ACE2 proteins. The receptor binding domains from BtKY72 and Khosta-2 used human ACE2 for entry, while BtKY72 and Khosta-1 exhibited widespread use of diverse rhinolophid ACE2s. A lysine at ACE2 position 31 appeared to be a major determinant of the inability of these RBDs to use a certain ACE2 sequence. The ACE2 protein from Rhinolophus alcyone engaged all known clade 3 and clade 1 receptor binding domains. We observed little use of Rhinolophus ACE2 orthologs by the clade 2 viruses, supporting the likely use of a separate, unknown receptor. Our results suggest that clade 3 sarbecoviruses from Africa and Europe use Rhinolophus ACE2 for entry, and their spike proteins appear primed to contribute to zoonosis under the right conditions. Knowing which viruses are primed for zoonotic transmission can focus surveillance efforts and mitigation strategies for future pandemics. This study shows that SARS-like coronaviruses identified in bats from Europe and Africa can use a range of horseshoe bat ACE2s for entry. In addition, viruses found in Russia and Kenya also have the ability to at least weakly use human ACE2.
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Affiliation(s)
- Sarah M. Roelle
- Department of Pathology, Case Western Reserve University School of Medicine, Cleveland, Ohio, United States of America
| | - Nidhi Shukla
- Department of Pathology, Case Western Reserve University School of Medicine, Cleveland, Ohio, United States of America
| | - Anh T. Pham
- Department of Pathology, Case Western Reserve University School of Medicine, Cleveland, Ohio, United States of America
| | - Anna M. Bruchez
- Department of Pathology, Case Western Reserve University School of Medicine, Cleveland, Ohio, United States of America
| | - Kenneth A. Matreyek
- Department of Pathology, Case Western Reserve University School of Medicine, Cleveland, Ohio, United States of America
- * E-mail:
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Fénéant L, Leske A, Günther K, Groseth A. Generation of Reporter-Expressing New World Arenaviruses: A Systematic Comparison. Viruses 2022; 14:v14071563. [PMID: 35891543 PMCID: PMC9317149 DOI: 10.3390/v14071563] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2022] [Revised: 07/14/2022] [Accepted: 07/16/2022] [Indexed: 02/01/2023] Open
Abstract
Replication-competent reporter-expressing viruses are crucial tools in molecular virology with applications that range from antiviral screening to live-cell imaging of protein spatiotemporal dynamics. However, there is currently little information available regarding viable strategies to develop reporter-expressing arenaviruses. To address this, we used Tacaribe virus (TCRV), an apathogenic BSL2 arenavirus, to assess the feasibility of different reporter expression approaches. We first generated trisegmented TCRV viruses with either the glycoprotein (GP) or nucleoprotein (NP) replaced by a reporter (GFP, mCherry, or nanoluciferase). These viruses were all viable, but showed marked differences in brightness and attenuation. Next, we generated terminal fusions with each of the TCRV proteins (i.e., NP, GP, polymerase (L), matrix protein (Z)) either with or without a T2A self-cleavage site. We tested both the function of the reporter-fused proteins alone, and the viability of corresponding recombinant TCRVs. We successfully rescued viruses with both direct and cleavable reporter fusions at the C-terminus of Z, as well as cleavable N-terminal fusions with NP. These viruses all displayed detectable reporter activity, but were also moderately attenuated. Finally, reporter proteins were inserted into a flexible hinge region within L. These viruses were also viable and showed moderate attenuation; however, reporter expression was only detectable for the luminescent virus. These strategies provide an exciting range of new tools for research into the molecular biology of TCRV that can likely also be adapted to other arenaviruses.
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Yi L, Hu Y, Wu Z, Li Y, Kong M, Kang Z, Zuoyuan B, Yang Z. TFRC upregulation promotes ferroptosis in CVB3 infection via nucleus recruitment of Sp1. Cell Death Dis 2022; 13:592. [PMID: 35821227 PMCID: PMC9276735 DOI: 10.1038/s41419-022-05027-w] [Citation(s) in RCA: 35] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2022] [Revised: 06/08/2022] [Accepted: 06/15/2022] [Indexed: 01/21/2023]
Abstract
CVB3 is a single positive-strand enterovirus, and a common pathogen in myocarditis etiology. Although a number of antiviral candidates are under development, specific targeted therapy is not available for CVB3. Ferroptosis is a new type of regulatory cell death discovered in recent years. In this study, our team provided the first evidence that ferroptosis existed in CVB3 infection in vivo and in vitro by iron overload, and massive accumulation of lipid peroxides. Mechanistically, we construct a classical model of HeLa cells following a time-course infection (6, 12, 24, 36, 48 h) with CVB3 (MOI = 10). We demonstrated that the TFRC gene plays an important role in promoting ferroptosis in CVB3 infection and downregulation of TFRC attenuated the ferroptosis. Interestingly, we observed that TFRC was nuclear translocation induced by the CVB3, which was predominantly localized in the cell membrane, but redistributed to the nucleus during CVB3 infection. Moreover, we found that the transcription factor Sp1 was an essential factor that could bind to the TFRC promoter and upregulate the TFRC transcription. Collectively, these results suggest that the Sp1/TFRC/Fe axis may provide a new target for the development of therapies against CVB3 infection.
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Affiliation(s)
- Lu Yi
- Department of Pediatrics, Third Xiangya Hospital of Central South University, 410013, Changsha, Hunan, People's Republic of China
| | - Yanan Hu
- Department of Pediatrics, Third Xiangya Hospital of Central South University, 410013, Changsha, Hunan, People's Republic of China
| | - Zhixiang Wu
- Department of Pediatrics, Third Xiangya Hospital of Central South University, 410013, Changsha, Hunan, People's Republic of China
| | - Ying Li
- Department of Pediatrics, Third Xiangya Hospital of Central South University, 410013, Changsha, Hunan, People's Republic of China
| | - Min Kong
- Department of Pediatrics, Third Xiangya Hospital of Central South University, 410013, Changsha, Hunan, People's Republic of China
| | - Zhijuan Kang
- Department of Pediatrics, Third Xiangya Hospital of Central South University, 410013, Changsha, Hunan, People's Republic of China
| | - Bojiao Zuoyuan
- Department of Pediatrics, Third Xiangya Hospital of Central South University, 410013, Changsha, Hunan, People's Republic of China
| | - Zuocheng Yang
- Department of Pediatrics, Third Xiangya Hospital of Central South University, 410013, Changsha, Hunan, People's Republic of China.
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Zeinivand M, jamali-Raeufy N, Zavvari F. The beneficial role of Hepcidin peptide inhibitor in improved the symptoms of COVID-19 in diabetics: anti-inflammatory and potential therapeutic effects. J Diabetes Metab Disord 2022; 21:1797-1807. [PMID: 35812243 PMCID: PMC9257556 DOI: 10.1007/s40200-022-01053-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/16/2021] [Revised: 04/21/2022] [Accepted: 04/24/2022] [Indexed: 12/02/2022]
Abstract
Coronavirus Disease 2019 (COVID-19) is a recent public health issue worldwide. Also, diabetes is a frequent condition with high mortality. There is a strong relationship between COVID-19 and diabetes. This article analyses the intricate relationship between COVID-19 and hepcidin. Hepcidin increases in aged non-insulin diabetic patients. Hepcidin is the last target treatment of several medications commonly used. Viral diseases, especially SARS-CoV19, can activate the hepcidin pathway leading to an elevation in the iron load. This increased iron is released into the bloodstream and results in cell death through ferroptosis, like free iron. Excess iron has pro-coagulative and toxic effects. Hepcidin overexpression and iron overload are associated with COVID-19 infection and can be considered potential targets for treatment. Several studies have shown dalteparin (anti-Hepcidin) could improve the symptoms of COVID-19 in diabetics by appropriately modulating and decreasing oxidative stress and inflammation. This finding can be leading to enhancing the existing knowledge about Therapeutic measures for reducing Covid-19 impairments in diabetics and is suggested as a possible therapeutic agent in diabetes.
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Gallo GL, López N, Loureiro ME. The Virus–Host Interplay in Junín Mammarenavirus Infection. Viruses 2022; 14:v14061134. [PMID: 35746604 PMCID: PMC9228484 DOI: 10.3390/v14061134] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2022] [Revised: 04/26/2022] [Accepted: 04/28/2022] [Indexed: 02/06/2023] Open
Abstract
Junín virus (JUNV) belongs to the Arenaviridae family and is the causative agent of Argentine hemorrhagic fever (AHF), a severe human disease endemic to agricultural areas in Argentina. At this moment, there are no effective antiviral therapeutics to battle pathogenic arenaviruses. Cumulative reports from recent years have widely provided information on cellular factors playing key roles during JUNV infection. In this review, we summarize research on host molecular determinants that intervene in the different stages of the viral life cycle: viral entry, replication, assembly and budding. Alongside, we describe JUNV tight interplay with the innate immune system. We also review the development of different reverse genetics systems and their use as tools to study JUNV biology and its close teamwork with the host. Elucidating relevant interactions of the virus with the host cell machinery is highly necessary to better understand the mechanistic basis beyond virus multiplication, disease pathogenesis and viral subversion of the immune response. Altogether, this knowledge becomes essential for identifying potential targets for the rational design of novel antiviral treatments to combat JUNV as well as other pathogenic arenaviruses.
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Mantlo EK, Maruyama J, Manning JT, Wanninger TG, Huang C, Smith JN, Patterson M, Paessler S, Koma T. Machupo Virus with Mutations in the Transmembrane Domain and Glycosylation Sites of the Glycoprotein Is Attenuated and Immunogenic in Animal Models of Bolivian Hemorrhagic Fever. J Virol 2022; 96:e0020922. [PMID: 35343792 PMCID: PMC9044957 DOI: 10.1128/jvi.00209-22] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2022] [Accepted: 02/15/2022] [Indexed: 12/28/2022] Open
Abstract
Several highly pathogenic mammarenaviruses cause severe hemorrhagic and neurologic disease in humans for which vaccines and antivirals are limited or unavailable. New World (NW) mammarenavirus Machupo virus (MACV) infection causes Bolivian hemorrhagic fever in humans. We previously reported that the disruption of specific N-linked glycan sites on the glycoprotein (GPC) partially attenuates MACV in an interferon alpha/beta and gamma (IFN-α/β and -γ) receptor knockout (R-/-) mouse model. However, some capability to induce neurological pathology still remained. The highly pathogenic Junin virus (JUNV) is another NW arenavirus closely related to MACV. An F427I substitution in the GPC transmembrane domain (TMD) rendered JUNV attenuated in a lethal mouse model after intracranial inoculation. In this study, we rationally designed and rescued a MACV containing mutations at two glycosylation sites and the corresponding F438I substitution in the GPC TMD. The MACV mutant is fully attenuated in IFN-α/β and -γ R-/- mice and outbred guinea pigs. Furthermore, inoculation with this mutant MACV completely protected guinea pigs from wild-type MACV lethal challenge. Last, we found the GPC TMD F438I substitution greatly impaired MACV growth in neuronal cell lines of mouse and human origins. Our results highlight the critical roles of the glycans and the TMD on the GPC in arenavirus virulence, which provide insight into the rational design of potential vaccine candidates for highly pathogenic arenaviruses. IMPORTANCE For arenaviruses, the only vaccine available is the live attenuated Candid#1 vaccine, a JUNV vaccine approved in Argentina. We and others have found that the glycans on GPC and the F427 residue in the GPC TMD are important for virulence of JUNV. Nevertheless, mutating either of them is not sufficient for full and stable attenuation of JUNV. Using reverse genetics, we disrupted specific glycosylation sites on MACV GPC and also introduced the corresponding F438I substitution in the GPC TMD. This MACV mutant is fully attenuated in two animal models and protects animals from lethal infection. Thus, our studies highlight the feasibility of rational attenuation of highly pathogenic arenaviruses for vaccine development. Another important finding from this study is that the F438I substitution in GPC TMD could substantially affect MACV replication in neurons. Future studies are warranted to elucidate the underlying mechanism and the implication of this mutation in arenavirus neural tropism.
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Affiliation(s)
- Emily K. Mantlo
- Department of Pathology, University of Texas Medical Branch at Galveston, Galveston, Texas, USA
| | - Junki Maruyama
- Department of Pathology, University of Texas Medical Branch at Galveston, Galveston, Texas, USA
| | - John T. Manning
- Department of Pathology, University of Texas Medical Branch at Galveston, Galveston, Texas, USA
| | - Timothy G. Wanninger
- Department of Pathology, University of Texas Medical Branch at Galveston, Galveston, Texas, USA
| | - Cheng Huang
- Department of Pathology, University of Texas Medical Branch at Galveston, Galveston, Texas, USA
| | - Jeanon N. Smith
- Department of Pathology, University of Texas Medical Branch at Galveston, Galveston, Texas, USA
| | - Michael Patterson
- Department of Pathology, University of Texas Medical Branch at Galveston, Galveston, Texas, USA
| | - Slobodan Paessler
- Department of Pathology, University of Texas Medical Branch at Galveston, Galveston, Texas, USA
| | - Takaaki Koma
- Department of Microbiology, Tokushima University Graduate School of Biomedical Sciences, Tokushima, Japan
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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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Fitzpatrick CJ, Mudhasani RR, Altamura LA, Campbell CE, Tran JP, Beitzel BF, Narayanan A, de la Fuente CL, Kehn-Hall K, Smith JM, Schmaljohn CS, Garrison AR. Junin Virus Activates p38 MAPK and HSP27 Upon Entry. Front Cell Infect Microbiol 2022; 12:798978. [PMID: 35463647 PMCID: PMC9022028 DOI: 10.3389/fcimb.2022.798978] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2021] [Accepted: 03/01/2022] [Indexed: 01/26/2023] Open
Abstract
Junín virus (JUNV), a New World arenavirus, is a rodent-borne virus and the causative agent of Argentine hemorrhagic fever. Humans become infected through exposure to rodent host secreta and excreta and the resulting infection can lead to an acute inflammatory disease with significant morbidity and mortality. Little is understood about the molecular pathogenesis of arenavirus hemorrhagic fever infections. We utilized Reverse Phase Protein Microarrays (RPPA) to compare global alterations in the host proteome following infection with an attenuated vaccine strain, Candid#1 (CD1), and the most parental virulent strain, XJ13, of JUNV in a human cell culture line. Human small airway epithelial cells were infected with CD1 or XJ13 at an MOI of 10, or mock infected. To determine proteomic changes at early timepoints (T = 1, 3, 8 and 24 h), the JUNV infected or mock infected cells were lysed in compatible buffers for RPPA. Out of 113 proteins that were examined by RPPA, 14 proteins were significantly altered following JUNV infection. Several proteins were commonly phosphorylated between the two strains and these correspond to entry and early replication events, to include p38 mitogen-activated protein kinase (MAPK), heat shock protein 27 (HSP27), and nuclear factor kappa B (NFκB). We qualitatively confirmed the alterations of these three proteins following infection by western blot analysis. We also determined that the inhibition of either p38 MAPK, with the small molecule inhibitor SB 203580 or siRNA knockdown, or HSP27, by siRNA knockdown, significantly decreases JUNV replication. Our data suggests that HSP27 phosphorylation at S82 upon virus infection is dependent on p38 MAPK activity. This work sheds light on the nuances of arenavirus replication.
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Affiliation(s)
- Collin J. Fitzpatrick
- United States Army Medical Research Institute of Infectious Diseases, Fort Detrick, MD, United States
| | - Rajini R. Mudhasani
- United States Army Medical Research Institute of Infectious Diseases, Fort Detrick, MD, United States
| | - Louis A. Altamura
- United States Army Medical Research Institute of Infectious Diseases, Fort Detrick, MD, United States
| | | | - Julie P. Tran
- United States Army Medical Research Institute of Infectious Diseases, Fort Detrick, MD, United States
| | - Brett F. Beitzel
- United States Army Medical Research Institute of Infectious Diseases, Fort Detrick, MD, United States
| | - Aarthi Narayanan
- National Center for Biodefense and Infectious Diseases, George Mason University, Manassas, VA, United States
| | - Cynthia L. de la Fuente
- National Center for Biodefense and Infectious Diseases, George Mason University, Manassas, VA, United States
| | - Kylene Kehn-Hall
- National Center for Biodefense and Infectious Diseases, George Mason University, Manassas, VA, United States
| | - Jeffrey M. Smith
- United States Army Medical Research Institute of Infectious Diseases, Fort Detrick, MD, United States
| | - Connie S. Schmaljohn
- United States Army Medical Research Institute of Infectious Diseases, Fort Detrick, MD, United States
| | - Aura R. Garrison
- United States Army Medical Research Institute of Infectious Diseases, Fort Detrick, MD, United States
- *Correspondence: Aura R. Garrison,
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Zheng M. ACE2 and COVID-19 Susceptibility and Severity. Aging Dis 2022; 13:360-372. [PMID: 35371596 PMCID: PMC8947832 DOI: 10.14336/ad.2021.0805] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2021] [Accepted: 08/05/2021] [Indexed: 11/11/2022] Open
Abstract
Sick, male, and older populations are more vulnerable to COVID-19. However, it remains unclear whether a common mechanism exists across different demographic characteristics. SARS-CoV-2 infection is initiated by the specific binding of the viral spike protein to angiotensin-converting enzyme 2 (ACE2). This study analyzed the demographics of pulmonary ACE2 expression, Mendelian randomization (MR) of ACE2 and COVID-19, and comparative tropism of SARS-CoV-2. The key features of SARS-CoV-2 tropism, including pulmonary ACE2 expression and ACE2-expressing cell types, showed distinct subphenotypes associated with the demographics of vulnerable COVID-19 populations, suggesting a hypothesis centered on “ACE2” to explain their interplay. Next, by integrating multiple COVID-19 cohorts of genome-wide association studies (GWASs) and cis-expression quantitative trait loci (cis-eQTLs) of ACE2, MR analysis demonstrated that ACE2 played a causal role in COVID-19 susceptibility and severity, suggesting ACE2 as a promising target for early COVID-19 treatment. Next, by analyzing the expression of host cell receptors using single-cell RNA sequencing (scRNA-seq) data of human lung tissues, comparative tropism analysis showed that SARS-CoV-2 and other respiratory viruses, but not non-respiratory viruses, had remarkably overlapping and enriched cellular tropism in alveolar type 2 (AT2) cells. This finding indicates the possibility of coinfection with SARS-CoV-2 and other respiratory viruses, perhaps implying sociovirology at the cellular level. Moreover, the binding of viral entry proteins to the compatible host cell receptors is under strong natural selection pressure. Therefore, comparative tropism might reveal the footprint of natural selection that shapes the virus population, which provides a novel perspective for understanding zoonotic spillover events.
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Affiliation(s)
- Ming Zheng
- 1Institute of Military Cognition and Brain Sciences, Academy of Military Medical Sciences, Beijing, China.,2Beijing Institute of Basic Medical Sciences, Beijing, China
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50
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Harford JB, Kim SS, Pirollo KF, Chang EH. TP53 Gene Therapy as a Potential Treatment for Patients with COVID-19. Viruses 2022; 14:v14040739. [PMID: 35458469 PMCID: PMC9027273 DOI: 10.3390/v14040739] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2022] [Revised: 03/29/2022] [Accepted: 03/29/2022] [Indexed: 02/04/2023] Open
Abstract
SGT-53 is a novel investigational agent that comprises an immunoliposome carrying a plasmid vector driving expression of the human TP53 gene that encodes wild-type human p53. SGT-53 is currently in phase II human trials for advanced pancreatic cancer. Although p53 is best known as a tumor suppressor, its participation in both innate and adaptive immune responses is well documented. It is now clear that p53 is an important component of the host response to various viral infections. To facilitate their viral life cycles, viruses have developed a diverse repertoire of strategies for counteracting the antiviral activities of host immune system by manipulating p53-dependent pathways in host cells. Coronaviruses reduce endogenous p53 levels in the cells they infect by enhancing the degradation of p53 in proteasomes. Thus, interference with p53 function is an important component in viral pathogenesis. Transfection of cells by SGT-53 has been shown to transiently produce exogenous p53 that is active as a pleiotropic transcription factor. We herein summarize the rationale for repurposing SGT-53 as a therapy for infection by SARS-CoV-2, the pathogen responsible for the COVID-19 pandemic. Because p53 regulation was found to play a crucial role in different infection stages of a wide variety of viruses, it is rational to believe that restoring p53 function based on SGT-53 treatment may lead to beneficial therapeutic outcomes for infectious disease at large including heretofore unknown viral pathogens that may emerge in the future.
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Affiliation(s)
- Joe B. Harford
- SynerGene Therapeutics, Inc., Potomac, MD 20854, USA;
- Correspondence:
| | - Sang Soo Kim
- SynerGene Therapeutics, Inc., Potomac, MD 20854, USA;
- Department of Oncology, Georgetown University Medical Center, Washington, DC 20007, USA; (K.F.P.); (E.H.C.)
| | - Kathleen F. Pirollo
- Department of Oncology, Georgetown University Medical Center, Washington, DC 20007, USA; (K.F.P.); (E.H.C.)
| | - Esther H. Chang
- Department of Oncology, Georgetown University Medical Center, Washington, DC 20007, USA; (K.F.P.); (E.H.C.)
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