1
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Mykytyn AZ, Breugem TI, Geurts MH, Beumer J, Schipper D, van Acker R, van den Doel PB, van Royen ME, Zhang J, Clevers H, Haagmans BL, Lamers MM. SARS-CoV-2 Omicron entry is type II transmembrane serine protease-mediated in human airway and intestinal organoid models. J Virol 2023; 97:e0085123. [PMID: 37555660 PMCID: PMC10506477 DOI: 10.1128/jvi.00851-23] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2023] [Accepted: 06/24/2023] [Indexed: 08/10/2023] Open
Abstract
SARS-CoV-2 can enter cells after its spike protein is cleaved by either type II transmembrane serine proteases (TTSPs), like TMPRSS2, or cathepsins. It is now widely accepted that the Omicron variant uses TMPRSS2 less efficiently and instead enters cells via cathepsins, but these findings have yet to be verified in more relevant cell models. Although we could confirm efficient cathepsin-mediated entry for Omicron in a monkey kidney cell line, experiments with protease inhibitors showed that Omicron (BA.1 and XBB1.5) did not use cathepsins for entry into human airway organoids and instead utilized TTSPs. Likewise, CRISPR-edited intestinal organoids showed that entry of Omicron BA.1 relied on the expression of the serine protease TMPRSS2 but not cathepsin L or B. Together, these data force us to rethink the concept that Omicron has adapted to cathepsin-mediated entry and indicate that TTSP inhibitors should not be dismissed as prophylactic or therapeutic antiviral strategy against SARS-CoV-2. IMPORTANCE Coronavirus entry relies on host proteases that activate the viral fusion protein, spike. These proteases determine the viral entry route, tropism, host range, and can be attractive drug targets. Whereas earlier studies using cell lines suggested that the Omicron variant of SARS-CoV-2 has changed its protease usage, from cell surface type II transmembrane serine proteases (TTSPs) to endosomal cathepsins, we report that this is not the case in human airway and intestinal organoid models, suggesting that host TTSP inhibition is still a viable prophylactic or therapeutic antiviral strategy against current SARS-CoV-2 variants and highlighting the importance of relevant human in vitro cell models.
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Affiliation(s)
- Anna Z. Mykytyn
- Viroscience Department, Erasmus Medical Center, Rotterdam, the Netherlands
| | - Tim I. Breugem
- Viroscience Department, Erasmus Medical Center, Rotterdam, the Netherlands
| | - Maarten H. Geurts
- Oncode Institute, Hubrecht Institute, Royal Netherlands Academy of Arts and Sciences and University Medical Center, Amsterdam, the Netherlands
| | - Joep Beumer
- Oncode Institute, Hubrecht Institute, Royal Netherlands Academy of Arts and Sciences and University Medical Center, Amsterdam, the Netherlands
| | - Debby Schipper
- Viroscience Department, Erasmus Medical Center, Rotterdam, the Netherlands
| | - Romy van Acker
- Viroscience Department, Erasmus Medical Center, Rotterdam, the Netherlands
| | | | - Martin E. van Royen
- Department of Pathology, Erasmus University Medical Center, Rotterdam, the Netherlands
| | - Jingshu Zhang
- Viroscience Department, Erasmus Medical Center, Rotterdam, the Netherlands
| | - Hans Clevers
- Oncode Institute, Hubrecht Institute, Royal Netherlands Academy of Arts and Sciences and University Medical Center, Amsterdam, the Netherlands
| | - Bart L. Haagmans
- Viroscience Department, Erasmus Medical Center, Rotterdam, the Netherlands
| | - Mart M. Lamers
- Viroscience Department, Erasmus Medical Center, Rotterdam, the Netherlands
- Programme in Emerging Infectious Diseases, Duke-NUS Medical School, Singapore
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Mols VC, Lamers MM, Leijten LME, Breugem TI, van de Bildt MWG, van den Doel PB, Lina PHC, Koopmans MPG, Haagmans BL, Kuiken T, Begeman L. Correction for Mols et al., "Intestinal Tropism of a Betacoronavirus ( Merbecovirus) in Nathusius's Pipistrelle Bat (Pipistrellus nathusii), Its Natural Host". J Virol 2023; 97:e0059623. [PMID: 37154754 DOI: 10.1128/jvi.00596-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/10/2023] Open
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3
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Mykytyn AZ, Rissmann M, Kok A, Rosu ME, Schipper D, Breugem TI, van den Doel PB, Chandler F, Bestebroer T, de Wit M, van Royen ME, Molenkamp R, Oude Munnink BB, de Vries RD, GeurtsvanKessel C, Smith DJ, Koopmans MPG, Rockx B, Lamers MM, Fouchier R, Haagmans BL. Antigenic cartography of SARS-CoV-2 reveals that Omicron BA.1 and BA.2 are antigenically distinct. Sci Immunol 2022; 7:eabq4450. [PMID: 35737747 PMCID: PMC9273038 DOI: 10.1126/sciimmunol.abq4450] [Citation(s) in RCA: 63] [Impact Index Per Article: 31.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2022] [Accepted: 06/14/2022] [Indexed: 12/16/2022]
Abstract
The emergence and rapid spread of SARS-CoV-2 variants may affect vaccine efficacy substantially. The Omicron variant termed BA.2, which differs substantially from BA.1 based on genetic sequence, is currently replacing BA.1 in several countries, but its antigenic characteristics have not yet been assessed. Here, we used antigenic cartography to quantify and visualize antigenic differences between early SARS-CoV-2 variants (614G, Alpha, Beta, Gamma, Zeta, Delta, and Mu) using hamster antisera obtained after primary infection. We first verified that the choice of the cell line for the neutralization assay did not affect the topology of the map substantially. Antigenic maps generated using pseudo-typed SARS-CoV-2 on the widely used VeroE6 cell line and the human airway cell line Calu-3 generated similar maps. Maps made using authentic SARS-CoV-2 on Calu-3 cells also closely resembled those generated with pseudo-typed viruses. The antigenic maps revealed a central cluster of SARS-CoV-2 variants, which grouped on the basis of mutual spike mutations. Whereas these early variants are antigenically similar, clustering relatively close to each other in antigenic space, Omicron BA.1 and BA.2 have evolved as two distinct antigenic outliers. Our data show that BA.1 and BA.2 both escape vaccine-induced antibody responses as a result of different antigenic characteristics. Thus, antigenic cartography could be used to assess antigenic properties of future SARS-CoV-2 variants of concern that emerge and to decide on the composition of novel spike-based (booster) vaccines.
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Affiliation(s)
- Anna Z. Mykytyn
- Viroscience Department, Erasmus Medical Center, Rotterdam, Netherlands
| | - Melanie Rissmann
- Viroscience Department, Erasmus Medical Center, Rotterdam, Netherlands
| | - Adinda Kok
- Viroscience Department, Erasmus Medical Center, Rotterdam, Netherlands
| | - Miruna E. Rosu
- Viroscience Department, Erasmus Medical Center, Rotterdam, Netherlands
| | - Debby Schipper
- Viroscience Department, Erasmus Medical Center, Rotterdam, Netherlands
| | - Tim I. Breugem
- Viroscience Department, Erasmus Medical Center, Rotterdam, Netherlands
| | | | - Felicity Chandler
- Viroscience Department, Erasmus Medical Center, Rotterdam, Netherlands
| | - Theo Bestebroer
- Viroscience Department, Erasmus Medical Center, Rotterdam, Netherlands
| | - Maurice de Wit
- Department of Neurology, Erasmus University Medical Center, Rotterdam, Netherlands
| | - Martin E. van Royen
- Department of Pathology, Erasmus University Medical Center, Rotterdam, Netherlands
| | - Richard Molenkamp
- Viroscience Department, Erasmus Medical Center, Rotterdam, Netherlands
| | | | - Rory D. de Vries
- Viroscience Department, Erasmus Medical Center, Rotterdam, Netherlands
| | | | - Derek J. Smith
- Center for Pathogen Evolution, Department of Zoology, University of Cambridge, Cambridge, CB2 3EJ, UK
| | | | - Barry Rockx
- Viroscience Department, Erasmus Medical Center, Rotterdam, Netherlands
| | - Mart M. Lamers
- Viroscience Department, Erasmus Medical Center, Rotterdam, Netherlands
| | - Ron Fouchier
- Viroscience Department, Erasmus Medical Center, Rotterdam, Netherlands
| | - Bart L. Haagmans
- Viroscience Department, Erasmus Medical Center, Rotterdam, Netherlands
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4
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Mykytyn AZ, Lamers MM, Okba NMA, Breugem TI, Schipper D, van den Doel PB, van Run P, van Amerongen G, de Waal L, Koopmans MPG, Stittelaar KJ, van den Brand JMA, Haagmans BL. Susceptibility of rabbits to SARS-CoV-2. Emerg Microbes Infect 2021; 10:1-7. [PMID: 33356979 PMCID: PMC7832544 DOI: 10.1080/22221751.2020.1868951] [Citation(s) in RCA: 98] [Impact Index Per Article: 32.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2020] [Revised: 12/21/2020] [Accepted: 12/21/2020] [Indexed: 12/04/2022]
Abstract
Transmission of severe acute respiratory coronavirus-2 (SARS-CoV-2) between livestock and humans is a potential public health concern. We demonstrate the susceptibility of rabbits to SARS-CoV-2, which excrete infectious virus from the nose and throat upon experimental inoculation. Therefore, investigations on the presence of SARS-CoV-2 in farmed rabbits should be considered.
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Affiliation(s)
- Anna Z. Mykytyn
- Viroscience department, Erasmus Medical Center, Rotterdam, the Netherlands
| | - Mart M. Lamers
- Viroscience department, Erasmus Medical Center, Rotterdam, the Netherlands
| | - Nisreen M. A. Okba
- Viroscience department, Erasmus Medical Center, Rotterdam, the Netherlands
| | - Tim I. Breugem
- Viroscience department, Erasmus Medical Center, Rotterdam, the Netherlands
| | - Debby Schipper
- Viroscience department, Erasmus Medical Center, Rotterdam, the Netherlands
| | | | - Peter van Run
- Viroscience department, Erasmus Medical Center, Rotterdam, the Netherlands
| | | | - Leon de Waal
- Viroclinics Biosciences B.V., Viroclinics Xplore, Schaijk, the Netherlands
| | | | | | - Judith M. A. van den Brand
- Division of Infectious Diseases and Immunology, Department of Biomolecular Health Sciences, Faculty of Veterinary Medicine, Utrecht University, Utrecht, the Netherlands
| | - Bart L. Haagmans
- Viroscience department, Erasmus Medical Center, Rotterdam, the Netherlands
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5
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Raadsen MP, Gharbharan A, Jordans CCE, Mykytyn AZ, Lamers MM, van den Doel PB, Endeman H, van den Akker JPC, GeurtsvanKessel CH, Koopmans MPG, Rokx C, Goeijenbier M, van Gorp ECM, Rijnders BJA, Haagmans BL. Interferon-α2 Auto-antibodies in Convalescent Plasma Therapy for COVID-19. J Clin Immunol 2021; 42:232-239. [PMID: 34767118 PMCID: PMC8586830 DOI: 10.1007/s10875-021-01168-3] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Accepted: 10/28/2021] [Indexed: 01/05/2023]
Abstract
Purpose To study the effect of interferon-α2 auto-antibodies (IFN-α2 Abs) on clinical and virological outcomes in critically ill COVID-19 patients and the risk of IFN-α2 Abs transfer during convalescent plasma treatment. Methods Sera from healthy controls, cases of COVID-19, and other respiratory illness were tested for IFN-α2 Abs by ELISA and a pseudo virus–based neutralization assay. The effects of disease severity, sex, and age on the risk of having neutralizing IFN-α2 Abs were determined. Longitudinal analyses were performed to determine association between IFN-α2 Abs and survival and viral load and whether serum IFN-α2 Abs appeared after convalescent plasma transfusion. Results IFN-α2 neutralizing sera were found only in COVID-19 patients, with proportions increasing with disease severity and age. In the acute stage of COVID-19, all sera from patients with ELISA-detected IFN-α2 Abs (13/164, 7.9%) neutralized levels of IFN-α2 exceeding physiological concentrations found in human plasma and this was associated with delayed viral clearance. Convalescent plasma donors that were anti-IFN-α2 ELISA positive (3/118, 2.5%) did not neutralize the same levels of IFN-α2. Neutralizing serum IFN-α2 Abs were associated with delayed viral clearance from the respiratory tract. Conclusions IFN-α2 Abs were detected by ELISA and neutralization assay in COVID-19 patients, but not in ICU patients with other respiratory illnesses. The presence of neutralizing IFN-α2 Abs in critically ill COVID-19 is associated with delayed viral clearance. IFN-α2 Abs in COVID-19 convalescent plasma donors were not neutralizing in the conditions tested. Supplementary Information The online version contains supplementary material available at 10.1007/s10875-021-01168-3.
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Affiliation(s)
| | - Arvind Gharbharan
- Department of Medical Microbiology and Infectious Diseases, Erasmus MC, Rotterdam, The Netherlands
| | - Carlijn C E Jordans
- Department of Medical Microbiology and Infectious Diseases, Erasmus MC, Rotterdam, The Netherlands
| | - Anna Z Mykytyn
- Viroscience Department, Erasmus MC, Rotterdam, The Netherlands
| | - Mart M Lamers
- Viroscience Department, Erasmus MC, Rotterdam, The Netherlands
| | | | - Henrik Endeman
- Intensive Care Department, Erasmus MC, Rotterdam, The Netherlands
| | | | | | | | - Casper Rokx
- Department of Medical Microbiology and Infectious Diseases, Erasmus MC, Rotterdam, The Netherlands
| | - Marco Goeijenbier
- Viroscience Department, Erasmus MC, Rotterdam, The Netherlands.,Intensive Care Department, Erasmus MC, Rotterdam, The Netherlands
| | | | - Bart J A Rijnders
- Department of Medical Microbiology and Infectious Diseases, Erasmus MC, Rotterdam, The Netherlands
| | - Bart L Haagmans
- Viroscience Department, Erasmus MC, Rotterdam, The Netherlands.
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6
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Lamers MM, Mykytyn AZ, Breugem TI, Wang Y, Wu DC, Riesebosch S, van den Doel PB, Schipper D, Bestebroer T, Wu NC, Haagmans BL. Human airway cells prevent SARS-CoV-2 multibasic cleavage site cell culture adaptation. eLife 2021; 10:66815. [PMID: 33835028 PMCID: PMC8131099 DOI: 10.7554/elife.66815] [Citation(s) in RCA: 61] [Impact Index Per Article: 20.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2021] [Accepted: 04/08/2021] [Indexed: 12/13/2022] Open
Abstract
Virus propagation methods generally use transformed cell lines to grow viruses from clinical specimens, which may force viruses to rapidly adapt to cell culture conditions, a process facilitated by high viral mutation rates. Upon propagation in VeroE6 cells, SARS-CoV-2 may mutate or delete the multibasic cleavage site (MBCS) in the spike protein. Previously, we showed that the MBCS facilitates serine protease-mediated entry into human airway cells (Mykytyn et al., 2021). Here, we report that propagating SARS-CoV-2 on the human airway cell line Calu-3 – that expresses serine proteases – prevents cell culture adaptations in the MBCS and directly adjacent to the MBCS (S686G). Similar results were obtained using a human airway organoid-based culture system for SARS-CoV-2 propagation. Thus, in-depth knowledge on the biology of a virus can be used to establish methods to prevent cell culture adaptation.
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Affiliation(s)
- Mart M Lamers
- Viroscience Department, Erasmus Medical Center, Rotterdam, Netherlands
| | - Anna Z Mykytyn
- Viroscience Department, Erasmus Medical Center, Rotterdam, Netherlands
| | - Tim I Breugem
- Viroscience Department, Erasmus Medical Center, Rotterdam, Netherlands
| | - Yiquan Wang
- Department of Biochemistry, University of Illinois at Urbana-Champaign, Urbana, United States
| | - Douglas C Wu
- Department of Biochemistry, University of Illinois at Urbana-Champaign, Urbana, United States
| | - Samra Riesebosch
- Viroscience Department, Erasmus Medical Center, Rotterdam, Netherlands
| | | | - Debby Schipper
- Viroscience Department, Erasmus Medical Center, Rotterdam, Netherlands
| | - Theo Bestebroer
- Viroscience Department, Erasmus Medical Center, Rotterdam, Netherlands
| | - Nicholas C Wu
- Department of Biochemistry, University of Illinois at Urbana-Champaign, Urbana, United States
- Center for Biophysics and Quantitative Biology, University of Illinois at Urbana-Champaign, Urbana, United States
- Carl R. Woese Institute for Genomic Biology, University of Illinois at Urbana-Champaign, Urbana, United States
| | - Bart L Haagmans
- Viroscience Department, Erasmus Medical Center, Rotterdam, Netherlands
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7
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Hoornweg TE, Schaftenaar W, Maurer G, van den Doel PB, Molenaar FM, Chamouard-Galante A, Vercammen F, Rutten VPMG, de Haan CAM. Elephant Endotheliotropic Herpesvirus Is Omnipresent in Elephants in European Zoos and an Asian Elephant Range Country. Viruses 2021; 13:v13020283. [PMID: 33670367 PMCID: PMC7917619 DOI: 10.3390/v13020283] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2021] [Revised: 02/05/2021] [Accepted: 02/06/2021] [Indexed: 11/16/2022] Open
Abstract
Elephant endotheliotropic herpesviruses (EEHVs) may cause acute, often lethal, hemorrhagic disease (EEHV-HD) in young elephants. Prevalence of EEHV in different elephant populations is still largely unknown. In order to improve diagnostic tools for the detection of EEHV infections and to obtain insight into its spread among elephants, we developed novel ELISAs based on EEHV1A gB and gH/gL. Performance of the ELISAs was assessed using sera from 41 European zoo elephants and 69 semi-captive elephants from Laos, one of the Asian elephant range countries. Sera from all (sub)adult animals tested (≥5 years of age) showed high reactivity with both gB and gH/gL, indicating that EEHV prevalence has been highly underestimated so far. Reactivity towards the antigens was generally lower for sera of juvenile animals (1 > 5 years). Only one (juvenile) animal, which was sampled directly after succumbing to EEHV-HD, was found to be seronegative for EEHV. The two other EEHV-HD cases tested showed low antibody levels, suggesting that all three cases died upon a primary EEHV infection. In conclusion, our study suggests that essentially all (semi-)captive (sub)adult elephants in European zoos and in Laos carry EEHV, and that young elephants with low antibody levels are at risk of dying from EEHV-HD.
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Affiliation(s)
- Tabitha E Hoornweg
- Section Virology, Division Infectious Diseases and Immunology, Department of Biomolecular Health Sciences, Faculty of Veterinary Medicine, Utrecht University, 3584 CL Utrecht, The Netherlands
- Section Immunology, Division Infectious Diseases and Immunology, Department of Biomolecular Health Sciences, Faculty of Veterinary Medicine, Utrecht University, 3584 CL Utrecht, The Netherlands
| | - Willem Schaftenaar
- Veterinary Advisor EAZA Elephant TAG, Rotterdam Zoo, 3041 JG Rotterdam, The Netherlands
| | - Gilles Maurer
- Center for Functional and Evolutionary Ecology (CEFE), Univ. Montpellier, CNRS, EPHE, IRD, Univ. Paul Valéry Montpellier 3, 34090 Montpellier, France
- Zooparc de Beauval & Beauval Nature, 41110 Saint-Aignan, France
| | | | - Fieke M Molenaar
- Zoological Society of London, ZSL Whipsnade Zoo, Dunstable LU6 2LF, Bedfordshire, UK
| | | | - Francis Vercammen
- Antwerp Zoo Centre for Research and Conservation, Antwerp Zoo Society, 2018 Antwerp, Belgium
| | - Victor P M G Rutten
- Section Immunology, Division Infectious Diseases and Immunology, Department of Biomolecular Health Sciences, Faculty of Veterinary Medicine, Utrecht University, 3584 CL Utrecht, The Netherlands
- Department of Veterinary Tropical Diseases, Faculty of Veterinary Science, University of Pretoria, Private Bag X04, Onderstepoort 0110, South Africa
| | - Cornelis A M de Haan
- Section Virology, Division Infectious Diseases and Immunology, Department of Biomolecular Health Sciences, Faculty of Veterinary Medicine, Utrecht University, 3584 CL Utrecht, The Netherlands
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8
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Mykytyn AZ, Breugem TI, Riesebosch S, Schipper D, van den Doel PB, Rottier RJ, Lamers MM, Haagmans BL. SARS-CoV-2 entry into human airway organoids is serine protease-mediated and facilitated by the multibasic cleavage site. eLife 2021; 10:e64508. [PMID: 33393462 PMCID: PMC7806259 DOI: 10.7554/elife.64508] [Citation(s) in RCA: 93] [Impact Index Per Article: 31.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2020] [Accepted: 12/31/2020] [Indexed: 01/19/2023] Open
Abstract
Coronavirus entry is mediated by the spike protein that binds the receptor and mediates fusion after cleavage by host proteases. The proteases that mediate entry differ between cell lines, and it is currently unclear which proteases are relevant in vivo. A remarkable feature of the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) spike is the presence of a multibasic cleavage site (MBCS), which is absent in the SARS-CoV spike. Here, we report that the SARS-CoV-2 spike MBCS increases infectivity on human airway organoids (hAOs). Compared with SARS-CoV, SARS-CoV-2 entered faster into Calu-3 cells and, more frequently, formed syncytia in hAOs. Moreover, the MBCS increased entry speed and plasma membrane serine protease usage relative to cathepsin-mediated endosomal entry. Blocking serine proteases, but not cathepsins, effectively inhibited SARS-CoV-2 entry and replication in hAOs. Our findings demonstrate that SARS-CoV-2 enters relevant airway cells using serine proteases, and suggest that the MBCS is an adaptation to this viral entry strategy.
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Affiliation(s)
- Anna Z Mykytyn
- Viroscience Department, Erasmus University Medical CenterRotterdamNetherlands
| | - Tim I Breugem
- Viroscience Department, Erasmus University Medical CenterRotterdamNetherlands
| | - Samra Riesebosch
- Viroscience Department, Erasmus University Medical CenterRotterdamNetherlands
| | - Debby Schipper
- Viroscience Department, Erasmus University Medical CenterRotterdamNetherlands
| | | | - Robbert J Rottier
- Department of Pediatric Surgery, Erasmus University Medical Center - Sophia Children's HospitalRotterdamNetherlands
| | - Mart M Lamers
- Viroscience Department, Erasmus University Medical CenterRotterdamNetherlands
| | - Bart L Haagmans
- Viroscience Department, Erasmus University Medical CenterRotterdamNetherlands
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Pavulraj S, Eschke K, Prahl A, Flügger M, Trimpert J, van den Doel PB, Andreotti S, Kaessmeyer S, Osterrieder N, Azab W. Fatal Elephant Endotheliotropic Herpesvirus Infection of Two Young Asian Elephants. Microorganisms 2019; 7:microorganisms7100396. [PMID: 31561506 PMCID: PMC6843339 DOI: 10.3390/microorganisms7100396] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2019] [Revised: 09/18/2019] [Accepted: 09/24/2019] [Indexed: 11/16/2022] Open
Abstract
Elephant endotheliotropic herpesvirus (EEHV) can cause a devastating haemorrhagic disease in young Asian elephants worldwide. Here, we report the death of two young Asian elephants after suffering from acute haemorrhagic disease due to EEHV-1A infection. We detected widespread distribution of EEHV-1A in various organs and tissues of the infected elephants. Enveloped viral particles accumulated within and around cytoplasmic electron-dense bodies in hepatic endothelial cells were detected. Attempts to isolate the virus on different cell cultures showed limited virus replication; however, late viral protein expression was detected in infected cells. We further showed that glycoprotein B (gB) of EEHV-1A possesses a conserved cleavage site Arg-X-Lys/Arg-Arg that is targeted by the cellular protease furin, similar to other members of the Herpesviridae. We have determined the complete 180 kb genome sequence of EEHV-1A isolated from the liver by next-generation sequencing and de novo assembly. As virus isolation in vitro has been unsuccessful and limited information is available regarding the function of viral proteins, we have attempted to take the initial steps in the development of suitable cell culture system and virus characterization. In addition, the complete genome sequence of an EEHV-1A in Europe will facilitate future studies on the epidemiology and diagnosis of EEHV infection in elephants.
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Affiliation(s)
- Selvaraj Pavulraj
- Institut für Virologie, Robert von Ostertag-Haus, Zentrum für Infektionsmedizin, Freie Universität Berlin, Robert-von-Ostertag-Str. 7-13, 14163 Berlin, Germany.
| | - Kathrin Eschke
- Institut für Virologie, Robert von Ostertag-Haus, Zentrum für Infektionsmedizin, Freie Universität Berlin, Robert-von-Ostertag-Str. 7-13, 14163 Berlin, Germany.
| | - Adriane Prahl
- Tierpark Hagenbeck gem. GmbH, Lokstedter Grenzstraße 2, 22527 Hamburg, Germany.
| | - Michael Flügger
- Tierpark Hagenbeck gem. GmbH, Lokstedter Grenzstraße 2, 22527 Hamburg, Germany.
| | - Jakob Trimpert
- Institut für Virologie, Robert von Ostertag-Haus, Zentrum für Infektionsmedizin, Freie Universität Berlin, Robert-von-Ostertag-Str. 7-13, 14163 Berlin, Germany.
| | - Petra B van den Doel
- ViroScience Lab, Erasmus Medical Center, Erasmus MC, Room Ee1714, dr. Molewaterplein 50, Rotterdam, 3015, GE, The Netherlands.
| | - Sandro Andreotti
- Department of Mathematics and Computer Science, Institute of Computer Science, Freie Universität Berlin, Arnimallee 14, 14195 Berlin, Germany.
| | - Sabine Kaessmeyer
- Department of Veterinary Medicine, Institute of Veterinary Anatomy, Freie Universität Berlin, Koserstraße 20, 14195 Berlin, Germany.
| | - Nikolaus Osterrieder
- Institut für Virologie, Robert von Ostertag-Haus, Zentrum für Infektionsmedizin, Freie Universität Berlin, Robert-von-Ostertag-Str. 7-13, 14163 Berlin, Germany.
| | - Walid Azab
- Institut für Virologie, Robert von Ostertag-Haus, Zentrum für Infektionsmedizin, Freie Universität Berlin, Robert-von-Ostertag-Str. 7-13, 14163 Berlin, Germany.
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10
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Angkawanish T, Nielen M, Vernooij H, Brown JL, van Kooten PJS, van den Doel PB, Schaftenaar W, Na Lampang K, Rutten VPMG. Evidence of high EEHV antibody seroprevalence and spatial variation among captive Asian elephants (Elephas maximus) in Thailand. Virol J 2019; 16:33. [PMID: 30866975 PMCID: PMC6415343 DOI: 10.1186/s12985-019-1142-8] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2018] [Accepted: 03/04/2019] [Indexed: 11/25/2022] Open
Abstract
Background Elephant endotheliotropic herpesviruses (EEHV) can cause an acute highly fatal hemorrhagic disease in young Asian elephants (Elephas maximus), both ex situ and in situ. Amongst eight EEHV types described so far, type 1 (subtype 1A and 1B) is the predominant disease-associated type. Little is known about routes of infection and pathogenesis of EEHV, and knowledge of disease prevalence, especially in range countries, is limited. Methods A large cross-sectional serological survey was conducted in captive elephants (n = 994) throughout Thailand using an EEHV-1A glycoprotein B protein antigen specific antibody ELISA. Results Antibody seroprevalence was 42.3%, with 420 of 994 elephants testing positive. Associations between seropositivity and potential risk factors for EEHV infection were assessed and included: elephant age, sex, camp cluster size, management type (extensive versus intensive), sampling period (wet vs. dry season) and location of camp (region). Univariable regression analysis identified management system and region as risk factors for the presence of EEHV antibodies in elephants, with region being significant in the final multivariable regression model. Prevalence was highest in the North region of the country (49.4%). Conclusions This study produced baseline serological data for captive elephants throughout Thailand, and showed a significant EEHV burden likely to be maintained in the captive population. Electronic supplementary material The online version of this article (10.1186/s12985-019-1142-8) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Taweepoke Angkawanish
- Department of Infectious Diseases and Immunology, Faculty of Veterinary Medicine, Utrecht University, Yalelaan 1, 3584, CL, Utrecht, The Netherlands. .,National Elephant Institute, Lampang-Chiangmai highway (km 28-29), Hangchart, Lampang, 52190, Thailand.
| | - Mirjam Nielen
- Department of Farm Animal Health, Faculty of Veterinary Medicine, Utrecht University, Utrecht, The Netherlands
| | - Hans Vernooij
- Department of Farm Animal Health, Faculty of Veterinary Medicine, Utrecht University, Utrecht, The Netherlands
| | - Janine L Brown
- Center for Species Survival, Smithsonian Conservation Biology Institute, Front Royal, Virginia, USA
| | - Peter J S van Kooten
- Department of Infectious Diseases and Immunology, Faculty of Veterinary Medicine, Utrecht University, Yalelaan 1, 3584, CL, Utrecht, The Netherlands
| | | | | | - Kannika Na Lampang
- Department of Veterinary Bioscience and Veterinary Public Health, Faculty of Veterinary Medicine, Chiang Mai University, Chiang Mai, Thailand
| | - Victor P M G Rutten
- Department of Infectious Diseases and Immunology, Faculty of Veterinary Medicine, Utrecht University, Yalelaan 1, 3584, CL, Utrecht, The Netherlands.,Department of Veterinary Tropical Diseases, Faculty of Veterinary Science, University of Pretoria, Pretoria, South Africa
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11
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Mumtaz N, Koedam M, van den Doel PB, van Leeuwen JPTM, Koopmans MPG, van der Eerden BCJ, Rockx B. Zika virus infection perturbs osteoblast function. Sci Rep 2018; 8:16975. [PMID: 30451958 PMCID: PMC6242880 DOI: 10.1038/s41598-018-35422-3] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2018] [Accepted: 10/31/2018] [Indexed: 01/08/2023] Open
Abstract
Zika virus (ZIKV) infection is typically characterized by a mild self-limiting disease presenting with fever, rash, myalgia and arthralgia and severe fetal complications during pregnancy such as microcephaly, subcortical calcifications and arthrogyropsis. Virus-induced arthralgia due to perturbed osteoblast function has been described for other arboviruses. In case of ZIKV infection, the role of osteoblasts in ZIKV pathogenesis and bone related pathology remains unknown. Here, we study the effect of ZIKV infection on osteoblast differentiation, maturation and function by quantifying activity and gene expression of key biomarkers, using human bone marrow-derived mesenchymal stromal cells (MSCs, osteoblast precursors). MSCs were induced to differentiate into osteoblasts and we found that osteoblasts were highly susceptible to ZIKV infection. While infection did not cause a cytopathic effect, a significant reduction of key osteogenic markers such as ALP, RUNX2, calcium contents and increased expression of IL6 in ZIKV-infected MSCs implicated a delay in osteoblast development and maturation, as compared to uninfected controls. In conclusion, we have developed and characterized a new in vitro model to study the role of bone development in ZIKV pathogenesis, which will help to identify possible new targets for developing therapeutic and preventive measures.
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Affiliation(s)
- Noreen Mumtaz
- Department of Viroscience, Erasmus University Medical Centre, Rotterdam, The Netherlands
| | - Marijke Koedam
- Department of Internal Medicine, Erasmus University Medical Centre, Rotterdam, The Netherlands
| | - Petra B van den Doel
- Department of Viroscience, Erasmus University Medical Centre, Rotterdam, The Netherlands
| | | | - Marion P G Koopmans
- Department of Viroscience, Erasmus University Medical Centre, Rotterdam, The Netherlands
| | - Bram C J van der Eerden
- Department of Internal Medicine, Erasmus University Medical Centre, Rotterdam, The Netherlands.
| | - Barry Rockx
- Department of Viroscience, Erasmus University Medical Centre, Rotterdam, The Netherlands.
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12
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van den Doel PB, Prieto VR, van Rossum-Fikkert SE, Schaftenaar W, Latimer E, Howard L, Chapman S, Masters N, Osterhaus ADME, Ling PD, Dastjerdi A, Martina B. Erratum to: A novel antigen capture ELISA for the specific detection of IgG antibodies to elephant endotheliotropic herpes virus. BMC Public Health 2015; 15:851. [PMID: 26336090 PMCID: PMC4559276 DOI: 10.1186/s12889-015-2178-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2015] [Accepted: 08/21/2015] [Indexed: 11/10/2022] Open
Affiliation(s)
- Petra B van den Doel
- ViroScience Lab, Erasmus Medical Center, Erasmus MC, Room Ee1714, dr. Molewaterplein 50, Rotterdam, 3015, GE, The Netherlands
| | | | | | | | - Erin Latimer
- Smithsonian Conservation Biology Institute, Smithsonian's National Zoo, Washington, DC, USA
| | - Lauren Howard
- Department of Animal Health, Houston Zoo, Inc., Houston, TX, USA
| | - Sarah Chapman
- East-Midland Zoological Society, Twycross Zoo, Warwickshire, UK
| | - Nic Masters
- Veterinary Services, Zoological Society of London, London, UK
| | - Albert D M E Osterhaus
- ViroScience Lab, Erasmus Medical Center, Erasmus MC, Room Ee1714, dr. Molewaterplein 50, Rotterdam, 3015, GE, The Netherlands.,Artemis One Health Research Institute, Utrecht, The Netherlands
| | - Paul D Ling
- Department of Molecular Virology and Microbiology, Baylor's College of Medicine, Houston, TX, USA
| | | | - Byron Martina
- ViroScience Lab, Erasmus Medical Center, Erasmus MC, Room Ee1714, dr. Molewaterplein 50, Rotterdam, 3015, GE, The Netherlands. .,Artemis One Health Research Institute, Utrecht, The Netherlands.
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13
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van den Doel PB, Prieto VR, van Rossum-Fikkert SE, Schaftenaar W, Latimer E, Howard L, Chapman S, Masters N, Osterhaus ADME, Ling PD, Dastjerdi A, Martina B. A novel antigen capture ELISA for the specific detection of IgG antibodies to elephant endotheliotropic herpes virus. BMC Vet Res 2015; 11:203. [PMID: 26268467 PMCID: PMC4535388 DOI: 10.1186/s12917-015-0522-6] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2015] [Accepted: 07/31/2015] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Elephants are classified as critically endangered animals by the International Union for Conservation of Species (IUCN). Elephant endotheliotropic herpesvirus (EEHV) poses a large threat to breeding programs of captive Asian elephants by causing fatal haemorrhagic disease. EEHV infection is detected by PCR in samples from both clinically ill and asymptomatic elephants with an active infection, whereas latent carriers can be distinguished exclusively via serological assays. To date, identification of latent carriers has been challenging, since there are no serological assays capable of detecting seropositive elephants. RESULTS Here we describe a novel ELISA that specifically detects EEHV antibodies circulating in Asian elephant plasma/serum. Approximately 80 % of PCR positive elephants display EEHV-specific antibodies. Monitoring three Asian elephant herds from European zoos revealed that the serostatus of elephants within a herd varied from non-detectable to high titers. The antibody titers showed typical herpes-like rise-and-fall patterns in time which occur in all seropositive animals in the herd more or less simultaneously. CONCLUSIONS This study shows that the developed ELISA is suitable to detect antibodies specific to EEHV. It allows study of EEHV seroprevalence in Asian elephants. Results confirm that EEHV prevalence among Asian elephants (whether captive-born or wild-caught) is high.
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Affiliation(s)
- Petra B van den Doel
- ViroScience Lab, Erasmus Medical Center, Erasmus MC, Room Ee1714, dr. Molewaterplein 50, 3015, GE, Rotterdam, The Netherlands.
| | | | | | | | - Erin Latimer
- Smithsonian Conservation Biology Institute, Smithsonian's National Zoo, Washington, DC, USA.
| | - Lauren Howard
- Department of Animal Health, Houston Zoo, Inc., Houston, TX, USA.
| | - Sarah Chapman
- East-Midland Zoological Society, Twycross Zoo, Warwickshire, UK.
| | - Nic Masters
- Veterinary Services, Zoological Society of London, London, UK.
| | - Albert D M E Osterhaus
- ViroScience Lab, Erasmus Medical Center, Erasmus MC, Room Ee1714, dr. Molewaterplein 50, 3015, GE, Rotterdam, The Netherlands. .,Artemis One Health Research Institute, Utrecht, The Netherlands.
| | - Paul D Ling
- Department of Molecular Virology and Microbiology, Baylor's College of Medicine, Houston, TX, USA.
| | | | - Byron Martina
- ViroScience Lab, Erasmus Medical Center, Erasmus MC, Room Ee1714, dr. Molewaterplein 50, 3015, GE, Rotterdam, The Netherlands. .,Artemis One Health Research Institute, Utrecht, The Netherlands.
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14
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van Beusechem VW, van den Doel PB, Gerritsen WR. Conditionally replicative adenovirus expressing degradation-resistant p53 for enhanced oncolysis of human cancer cells overexpressing murine double minute 2. Mol Cancer Ther 2005; 4:1013-8. [PMID: 15956259 DOI: 10.1158/1535-7163.mct-05-0010] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Conditionally replicative adenoviruses (CRAd) are under investigation as anticancer agents. Previously, we found that the CRAd AdDelta24-p53, expressing the p53 tumor suppressor protein from its genome, more effectively killed most human cancer cells than did its parent AdDelta24. However, a minority of cancer cell lines poorly responded to the oncolysis-enhancing effect of p53. Here we show that refractory cell lines expressed high levels of the major negative p53 regulator murine double minute 2 (MDM2). To obviate MDM2-mediated inactivation of CRAd-encoded p53, we constructed the new CRAd AdDelta24-p53(14/19) encoding a p53 variant incapable of binding to MDM2. AdDelta24-p53(14/19) was approximately 10 times more effective than AdDelta24-p53 in killing cancer cell lines with high levels of human MDM2, but not cells with low MDM2. This finding supports the notion that exogenous expression of functional p53 augments the anticancer efficacy of CRAds. In addition, it confirms that high MDM2 expression is a molecular determinant of resistance against oncolysis enhancement by exogenous wild-type p53. Moreover, it shows that efficacy enhancement by restoration of functional p53 can also be accomplished in cancer cells expressing a p53 inhibitor. This further expands the utility of CRAds expressing functional p53 variants for effective virotherapy of cancer and thus their possible contribution to the advancement of individualized molecular medicine.
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Affiliation(s)
- Victor W van Beusechem
- Division of Gene Therapy, Department of Medical Oncology, VU University Medical Center, Amsterdam, the Netherlands.
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15
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van Beusechem VW, van den Doel PB, Grill J, Pinedo HM, Gerritsen WR. Conditionally replicative adenovirus expressing p53 exhibits enhanced oncolytic potency. Cancer Res 2002; 62:6165-71. [PMID: 12414643] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/27/2023]
Abstract
Conditionally replicative adenoviruses (CRAds) hold promise as anticancer agents. Their potency depends on their replication efficiency in cancer cells and their capacity to destroy these cells by oncolysis. In this regard, a critical determinant is the capacity of CRAds to induce cell death at late stages of infection to release their progeny. One of the cell death pathways that are exploited by adenoviruses involves the tumor suppressor protein p53. Unfortunately, many cancer cells have a nonfunctional p53 pathway and thus do not effectively support CRAd-induced cell death. We hypothesized that restoration of the p53-dependent cell death pathway in cancer cells would promote CRAd-induced cell lysis. Exogenous expression of p53 in human cancer cells during adenovirus replication accelerated cell death by several days and augmented early virus progeny release. The p53-enhanced oncolysis occurred independent of E1A binding to pRb and independent of E3 functions. On the basis of these findings, we constructed a new CRAd, AdDelta24-p53. This virus expressed functional p53 while replicating in cancer cells. Most importantly, AdDelta24-p53 exhibited enhanced oncolytic potency on 80% of tested human cancer cell lines of various tissue origins and with different p53 status. CRAd potency was increased up to >100-fold by p53 expression. We conclude that CRAds expressing p53 are promising new agents for more effective treatment of many human cancers.
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Affiliation(s)
- Victor W van Beusechem
- Division of Gene Therapy, Department of Medical Oncology, VU University Medical Center, 1081 HV Amsterdam, the Netherlands.
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