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Chakraborty C, Saha S, Bhattacharya M. Recent Advances in Immunological Landscape and Immunotherapeutic Agent of Nipah Virus Infection. Cell Biochem Biophys 2024:10.1007/s12013-024-01424-4. [PMID: 39052192 DOI: 10.1007/s12013-024-01424-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/10/2024] [Indexed: 07/27/2024]
Abstract
Over the last two decades, the Nipah virus (NiV) emerged as a highly lethal zoonotic pathogen to humans. Outbreaks occurred occasionally in South and Southeast Asia. Therefore, a safe and effective vaccine against the virus is needed to fight against the deadly virus. Understanding the immunological landscape during this lethal virus infection is necessary in this direction. However, we found scattered information on the immunological landscape of the virus's reservoir, as well as hosts such as humans and livestock. The review provides a recent understanding of the immunological landscape of the virus's reservoir, human hosts, monoclonal antibodies, and vaccines for NiV infection. To describe the immunological landscape, we divided our review article into some points. Firstly, we illustrated bats' immune response as a reservoir during the NiV infection. Secondly, we illustrated an overview of the molecular mechanisms underlying the immune response to the NiV infection, various immune cells, humans' innate immune response, adaptive immunity, and the landscape of cytokines and chemokines. We also discussed INF escape, NET evasion, the T cell landscape, and the B cell landscape during virus infection. Thirdly, we also demonstrated the potential monoclonal antibody therapeutics, and vaccines. Finally, neutralizing antibodies (nAbs) of NiV and potentially other therapeutic strategies were discussed. The review will help researchers for better understanding the immunological landscape, mAbs, and vaccines, enabling them to develop their next-generation versions.
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Affiliation(s)
- Chiranjib Chakraborty
- Department of Biotechnology, School of Life Science and Biotechnology, Adamas University, Kolkata, West Bengal, 700126, India.
| | - Sagnik Saha
- Department of Biotechnology, School of Life Science and Biotechnology, Adamas University, Kolkata, West Bengal, 700126, India
| | - Manojit Bhattacharya
- Department of Zoology, Fakir Mohan University, Vyasa Vihar, Balasore, 756020, Odisha, India
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2
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Abelson D, Barajas J, Stuart L, Kim D, Marimuthu A, Hu C, Yamamoto B, Ailor E, Whaley KJ, Vu H, Agans KN, Borisevich V, Deer DJ, Dobias NS, Woolsey C, Prasad AN, Peel JE, Lawrence WS, Cross RW, Geisbert TW, Fenton KA, Zeitlin L. Long-term Prophylaxis Against Aerosolized Marburg Virus in Nonhuman Primates With an Afucosylated Monoclonal Antibody. J Infect Dis 2023; 228:S701-S711. [PMID: 37474248 PMCID: PMC11009508 DOI: 10.1093/infdis/jiad278] [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: 04/22/2023] [Revised: 07/10/2023] [Accepted: 07/17/2023] [Indexed: 07/22/2023] Open
Abstract
Marburg virus (MARV) causes a hemorrhagic fever disease in human and nonhuman primates with high levels of morbidity and mortality. Concerns about weaponization of aerosolized MARV have spurred the development of nonhuman primate (NHP) models of aerosol exposure. To address the potential threat of aerosol exposure, a monoclonal antibody that binds MARV glycoprotein was tested, MR186YTE, for its efficacy as a prophylactic. MR186YTE was administered intramuscularly to NHPs at 15 or 5 mg/kg 1 month prior to MARV aerosol challenge. Seventy-five percent (3/4) of the 15 mg/kg dose group and 50% (2/4) of the 5 mg/kg dose group survived. Serum analyses showed that the NHP dosed with 15 mg/kg that succumbed to infection developed an antidrug antibody response and therefore had no detectable MR186YTE at the time of challenge. These results suggest that intramuscular dosing of mAbs may be a clinically useful prophylaxis for MARV aerosol exposure.
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Affiliation(s)
- Dafna Abelson
- Mapp Biopharmaceutical, Inc, San Diego, California, USA
| | | | - Lauren Stuart
- Mapp Biopharmaceutical, Inc, San Diego, California, USA
| | - Do Kim
- Mapp Biopharmaceutical, Inc, San Diego, California, USA
| | | | - Chris Hu
- Mapp Biopharmaceutical, Inc, San Diego, California, USA
| | | | - Eric Ailor
- Mapp Biopharmaceutical, Inc, San Diego, California, USA
| | | | - Hong Vu
- Integrated Biotherapeutics, Rockville, Maryland, USA
| | - Krystle N Agans
- Galveston National Laboratory, University of Texas Medical Branch, Galveston, Texas, USA
| | - Viktoriya Borisevich
- Galveston National Laboratory, University of Texas Medical Branch, Galveston, Texas, USA
| | - Daniel J Deer
- Galveston National Laboratory, University of Texas Medical Branch, Galveston, Texas, USA
| | - Natalie S Dobias
- Galveston National Laboratory, University of Texas Medical Branch, Galveston, Texas, USA
| | - Courtney Woolsey
- Galveston National Laboratory, University of Texas Medical Branch, Galveston, Texas, USA
| | - Abhishek N Prasad
- Galveston National Laboratory, University of Texas Medical Branch, Galveston, Texas, USA
| | - Jennifer E Peel
- Galveston National Laboratory, University of Texas Medical Branch, Galveston, Texas, USA
| | - William S Lawrence
- Galveston National Laboratory, University of Texas Medical Branch, Galveston, Texas, USA
| | - Robert W Cross
- Galveston National Laboratory, University of Texas Medical Branch, Galveston, Texas, USA
| | - Thomas W Geisbert
- Galveston National Laboratory, University of Texas Medical Branch, Galveston, Texas, USA
| | - Karla A Fenton
- Galveston National Laboratory, University of Texas Medical Branch, Galveston, Texas, USA
| | - Larry Zeitlin
- Mapp Biopharmaceutical, Inc, San Diego, California, USA
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3
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Pigeaud DD, Geisbert TW, Woolsey C. Animal Models for Henipavirus Research. Viruses 2023; 15:1980. [PMID: 37896758 PMCID: PMC10610982 DOI: 10.3390/v15101980] [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: 09/01/2023] [Revised: 09/19/2023] [Accepted: 09/21/2023] [Indexed: 10/29/2023] Open
Abstract
Hendra virus (HeV) and Nipah virus (NiV) are zoonotic paramyxoviruses in the genus Henipavirus (HNV) that emerged nearly thirty years ago. Outbreaks of HeV and NiV have led to severe respiratory disease and encephalitis in humans and animals characterized by a high mortality rate. Despite the grave threat HNVs pose to public health and global biosecurity, no approved medical countermeasures for human use currently exist against HeV or NiV. To develop candidate vaccines and therapeutics and advance the field's understanding of HNV pathogenesis, animal models of HeV and NiV have been instrumental and remain indispensable. Various species, including rodents, ferrets, and nonhuman primates (NHPs), have been employed for HNV investigations. Among these, NHPs have demonstrated the closest resemblance to human HNV disease, although other animal models replicate some key disease features. Here, we provide a comprehensive review of the currently available animal models (mice, hamsters, guinea pigs, ferrets, cats, dogs, nonhuman primates, horses, and swine) to support HNV research. We also discuss the strengths and limitations of each model for conducting pathogenesis and transmission studies on HeV and NiV and for the evaluation of medical countermeasures.
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Affiliation(s)
- Declan D. Pigeaud
- Galveston National Laboratory, University of Texas Medical Branch, Galveston, TX 77555, USA; (D.D.P.); (T.W.G.)
- Department of Pathology, University of Texas Medical Branch, Galveston, TX 77555, USA
| | - Thomas W. Geisbert
- Galveston National Laboratory, University of Texas Medical Branch, Galveston, TX 77555, USA; (D.D.P.); (T.W.G.)
- Department of Pathology, University of Texas Medical Branch, Galveston, TX 77555, USA
- Department of Microbiology and Immunology, University of Texas Medical Branch, Galveston, TX 77555, USA
| | - Courtney Woolsey
- Galveston National Laboratory, University of Texas Medical Branch, Galveston, TX 77555, USA; (D.D.P.); (T.W.G.)
- Department of Microbiology and Immunology, University of Texas Medical Branch, Galveston, TX 77555, USA
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4
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Monath TP, Nichols R, Feldmann F, Griffin A, Haddock E, Callison J, Meade-White K, Okumura A, Lovaglio J, Hanley PW, Clancy CS, Shaia C, Rida W, Fusco J. Immunological correlates of protection afforded by PHV02 live, attenuated recombinant vesicular stomatitis virus vector vaccine against Nipah virus disease. Front Immunol 2023; 14:1216225. [PMID: 37731485 PMCID: PMC10507387 DOI: 10.3389/fimmu.2023.1216225] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2023] [Accepted: 08/16/2023] [Indexed: 09/22/2023] Open
Abstract
Introduction Immune correlates of protection afforded by PHV02, a recombinant vesicular stomatitis (rVSV) vector vaccine against Nipah virus (NiV) disease, were investigated in the African green monkey (AGM) model. Neutralizing antibody to NiV has been proposed as the principal mediator of protection against future NiV infection. Methods Two approaches were used to determine the correlation between neutralizing antibody levels and outcomes following a severe (1,000 median lethal doses) intranasal/intratracheal (IN/IT) challenge with NiV (Bangladesh): (1) reduction in vaccine dose given 28 days before challenge and (2) challenge during the early phase of the antibody response to the vaccine. Results Reduction in vaccine dose to very low levels led to primary vaccine failure rather than a sub-protective level of antibody. All AGMs vaccinated with the nominal clinical dose (2 × 107 pfu) at 21, 14, or 7 days before challenge survived. AGMs vaccinated at 21 days before challenge had neutralizing antibodies (geometric mean titer, 71.3). AGMs vaccinated at 7 or 14 days before challenge had either undetectable or low neutralizing antibody titers pre-challenge but had a rapid rise in titers after challenge that abrogated the NiV infection. A simple logistic regression model of the combined studies was used, in which the sole explanatory variable was pre-challenge neutralizing antibody titers. For a pre-challenge titer of 1:5, the predicted survival probability is 100%. The majority of animals with pre-challenge neutralizing titer of ≥1:20 were protected against pulmonary infiltrates on thoracic radiograms, and a majority of those with titers ≥1:40 were protected against clinical signs of illness and against a ≥fourfold antibody increase following challenge (indicating sterile immunity). Controls receiving rVSV-Ebola vaccine rapidly succumbed to NiV challenge, eliminating the innate immunity stimulated by the rVSV vector as a contributor to survival in monkeys challenged as early as 7 days after vaccination. Discussion and conclusion It was concluded that PHV02 vaccine elicited a rapid onset of protection and that any detectable level of neutralizing antibody was a functional immune correlate of survival.
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Affiliation(s)
- Thomas P. Monath
- Crozet Biopharma LLC, Lexington, MA, United States
- Public Health Vaccines Inc., Cambridge, MA, United States
| | | | - Friederike Feldmann
- Rocky Mountain Veterinary Branch, Division of Intramural Research, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Hamilton, MT, United States
| | - Amanda Griffin
- Laboratory of Virology, Division of Intramural Studies, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Hamilton, MT, United States
| | - Elaine Haddock
- Laboratory of Virology, Division of Intramural Studies, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Hamilton, MT, United States
| | - Julie Callison
- Laboratory of Virology, Division of Intramural Studies, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Hamilton, MT, United States
| | - Kimberly Meade-White
- Laboratory of Virology, Division of Intramural Studies, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Hamilton, MT, United States
| | - Atsushi Okumura
- Laboratory of Virology, Division of Intramural Studies, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Hamilton, MT, United States
| | - Jamie Lovaglio
- Rocky Mountain Veterinary Branch, Division of Intramural Research, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Hamilton, MT, United States
| | - Patrick W. Hanley
- Rocky Mountain Veterinary Branch, Division of Intramural Research, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Hamilton, MT, United States
| | - Chad S. Clancy
- Rocky Mountain Veterinary Branch, Division of Intramural Research, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Hamilton, MT, United States
| | - Carl Shaia
- Rocky Mountain Veterinary Branch, Division of Intramural Research, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Hamilton, MT, United States
| | - Wasima Rida
- Biostatistics Consultant, Arlington, VA, United States
| | - Joan Fusco
- Public Health Vaccines Inc., Cambridge, MA, United States
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5
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Stevens CS, Lowry J, Juelich T, Atkins C, Johnson K, Smith JK, Panis M, Ikegami T, tenOever B, Freiberg AN, Lee B. Nipah Virus Bangladesh Infection Elicits Organ-Specific Innate and Inflammatory Responses in the Marmoset Model. J Infect Dis 2023; 228:604-614. [PMID: 36869692 PMCID: PMC10469344 DOI: 10.1093/infdis/jiad053] [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: 09/21/2022] [Revised: 02/03/2023] [Accepted: 02/28/2023] [Indexed: 03/05/2023] Open
Abstract
The common marmoset (Callithrix jacchus) is increasingly recognized as an ideal nonhuman primate (NHP) at high biocontainment due to its smaller size and relative ease of handling. Here, we evaluated the susceptibility and pathogenesis of Nipah virus Bangladesh strain (NiVB) infection in marmosets at biosafety level 4. Infection via the intranasal and intratracheal route resulted in fatal disease in all 4 infected marmosets. Three developed pulmonary edema and hemorrhage as well as multifocal hemorrhagic lymphadenopathy, while 1 recapitulated neurologic clinical manifestations and cardiomyopathy on gross pathology. Organ-specific innate and inflammatory responses were characterized by RNA sequencing in 6 different tissues from infected and control marmosets. Notably, a unique transcriptome was revealed in the brainstem of the marmoset exhibiting neurological signs. Our results provide a more comprehensive understanding of NiV pathogenesis in an accessible and novel NHP model, closely reflecting clinical disease as observed in NiV patients.
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Affiliation(s)
- Christian S Stevens
- Department of Microbiology, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Jake Lowry
- Animal Resource Center, University of Texas Medical Branch, Galveston, Texas, USA
| | - Terry Juelich
- Department of Pathology, University of Texas Medical Branch, Galveston, Texas, USA
| | - Colm Atkins
- Department of Pathology, University of Texas Medical Branch, Galveston, Texas, USA
| | - Kendra Johnson
- Department of Microbiology and Immunology, University of Texas Medical Branch, Galveston, Texas, USA
| | - Jennifer K Smith
- Department of Pathology, University of Texas Medical Branch, Galveston, Texas, USA
| | - Maryline Panis
- Department of Microbiology, Icahn School of Medicine at Mount Sinai, New York, New York, USA
- Department of Microbiology, New York University, New York, New YorkUSA
| | - Tetsuro Ikegami
- Department of Pathology, University of Texas Medical Branch, Galveston, Texas, USA
| | - Benjamin tenOever
- Department of Microbiology, Icahn School of Medicine at Mount Sinai, New York, New York, USA
- Department of Microbiology, New York University, New York, New YorkUSA
| | - Alexander N Freiberg
- Department of Pathology, University of Texas Medical Branch, Galveston, Texas, USA
| | - Benhur Lee
- Department of Microbiology, Icahn School of Medicine at Mount Sinai, New York, New York, USA
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6
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Amaya M, Yin R, Yan L, Borisevich V, Adhikari BN, Bennett A, Malagon F, Cer RZ, Bishop-Lilly KA, Dimitrov AS, Cross RW, Geisbert TW, Broder CC. A Recombinant Chimeric Cedar Virus-Based Surrogate Neutralization Assay Platform for Pathogenic Henipaviruses. Viruses 2023; 15:1077. [PMID: 37243163 PMCID: PMC10223282 DOI: 10.3390/v15051077] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2023] [Revised: 04/20/2023] [Accepted: 04/22/2023] [Indexed: 05/28/2023] Open
Abstract
The henipaviruses, Nipah virus (NiV), and Hendra virus (HeV) can cause fatal diseases in humans and animals, whereas Cedar virus is a nonpathogenic henipavirus. Here, using a recombinant Cedar virus (rCedV) reverse genetics platform, the fusion (F) and attachment (G) glycoprotein genes of rCedV were replaced with those of NiV-Bangladesh (NiV-B) or HeV, generating replication-competent chimeric viruses (rCedV-NiV-B and rCedV-HeV), both with and without green fluorescent protein (GFP) or luciferase protein genes. The rCedV chimeras induced a Type I interferon response and utilized only ephrin-B2 and ephrin-B3 as entry receptors compared to rCedV. The neutralizing potencies of well-characterized cross-reactive NiV/HeV F and G specific monoclonal antibodies against rCedV-NiV-B-GFP and rCedV-HeV-GFP highly correlated with measurements obtained using authentic NiV-B and HeV when tested in parallel by plaque reduction neutralization tests (PRNT). A rapid, high-throughput, and quantitative fluorescence reduction neutralization test (FRNT) using the GFP-encoding chimeras was established, and monoclonal antibody neutralization data derived by FRNT highly correlated with data derived by PRNT. The FRNT assay could also measure serum neutralization titers from henipavirus G glycoprotein immunized animals. These rCedV chimeras are an authentic henipavirus-based surrogate neutralization assay that is rapid, cost-effective, and can be utilized outside high containment.
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Affiliation(s)
- Moushimi Amaya
- Department of Microbiology and Immunology, Uniformed Services University, Bethesda, MD 20814, USA
| | - Randy Yin
- Department of Microbiology and Immunology, Uniformed Services University, Bethesda, MD 20814, USA
- Henry M. Jackson Foundation for the Advancement of Military Medicine Inc., Bethesda, MD 20814, USA
| | - Lianying Yan
- Department of Microbiology and Immunology, Uniformed Services University, Bethesda, MD 20814, USA
- Henry M. Jackson Foundation for the Advancement of Military Medicine Inc., Bethesda, MD 20814, USA
| | - Viktoriya Borisevich
- Department of Microbiology and Immunology, University of Texas Medical Branch, Galveston, TX 77555, USA
- Galveston National Laboratory, University of Texas Medical Branch, Galveston, TX 77555, USA
| | - Bishwo N. Adhikari
- Genomics and Bioinformatics Department, Biological Defense Research Directorate, Naval Medical Research Command–Frederick, Fort Detrick, Frederick, MD 21702, USA
- Defense Threat Reduction Agency, Fort Belvoir, VA 22060, USA
| | - Andrew Bennett
- Defense Threat Reduction Agency, Fort Belvoir, VA 22060, USA
- Leidos, Inc., Reston, VA 20190, USA
| | - Francisco Malagon
- Defense Threat Reduction Agency, Fort Belvoir, VA 22060, USA
- Leidos, Inc., Reston, VA 20190, USA
| | - Regina Z. Cer
- Genomics and Bioinformatics Department, Biological Defense Research Directorate, Naval Medical Research Command–Frederick, Fort Detrick, Frederick, MD 21702, USA
| | - Kimberly A. Bishop-Lilly
- Genomics and Bioinformatics Department, Biological Defense Research Directorate, Naval Medical Research Command–Frederick, Fort Detrick, Frederick, MD 21702, USA
| | - Antony S. Dimitrov
- Department of Microbiology and Immunology, Uniformed Services University, Bethesda, MD 20814, USA
- Henry M. Jackson Foundation for the Advancement of Military Medicine Inc., Bethesda, MD 20814, USA
| | - Robert W. Cross
- Department of Microbiology and Immunology, University of Texas Medical Branch, Galveston, TX 77555, USA
- Galveston National Laboratory, University of Texas Medical Branch, Galveston, TX 77555, USA
| | - Thomas W. Geisbert
- Department of Microbiology and Immunology, University of Texas Medical Branch, Galveston, TX 77555, USA
- Galveston National Laboratory, University of Texas Medical Branch, Galveston, TX 77555, USA
| | - Christopher C. Broder
- Department of Microbiology and Immunology, Uniformed Services University, Bethesda, MD 20814, USA
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Müller M, Fischer K, Woehnke E, Zaeck LM, Prönnecke C, Knittler MR, Karger A, Diederich S, Finke S. Analysis of Nipah Virus Replication and Host Proteome Response Patterns in Differentiated Porcine Airway Epithelial Cells Cultured at the Air-Liquid Interface. Viruses 2023; 15:v15040961. [PMID: 37112941 PMCID: PMC10143807 DOI: 10.3390/v15040961] [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: 03/13/2023] [Revised: 04/03/2023] [Accepted: 04/11/2023] [Indexed: 04/29/2023] Open
Abstract
Respiratory tract epithelium infection plays a primary role in Nipah virus (NiV) pathogenesis and transmission. Knowledge about infection dynamics and host responses to NiV infection in respiratory tract epithelia is scarce. Studies in non-differentiated primary respiratory tract cells or cell lines indicate insufficient interferon (IFN) responses. However, studies are lacking in the determination of complex host response patterns in differentiated respiratory tract epithelia for the understanding of NiV replication and spread in swine. Here we characterized infection and spread of NiV in differentiated primary porcine bronchial epithelial cells (PBEC) cultivated at the air-liquid interface (ALI). After the initial infection of only a few apical cells, lateral spread for 12 days with epithelium disruption was observed without releasing substantial amounts of infectious virus from the apical or basal sides. Deep time course proteomics revealed pronounced upregulation of genes related to type I/II IFN, immunoproteasomal subunits, transporter associated with antigen processing (TAP)-mediated peptide transport, and major histocompatibility complex (MHC) I antigen presentation. Spliceosomal factors were downregulated. We propose a model in which NiV replication in PBEC is slowed by a potent and broad type I/II IFN host response with conversion from 26S proteasomes to immunoproteasomal antigen processing and improved MHC I presentation for adaptive immunity priming. NiV induced cytopathic effects could reflect the focal release of cell-associated NiV, which may contribute to efficient airborne viral spread between pigs.
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Affiliation(s)
- Martin Müller
- Institute of Molecular Virology and Cell Biology, Friedrich-Loeffler-Institut, Federal Research Institute of Animal Health, 17493 Greifswald-Insel Riems, Germany
| | - Kerstin Fischer
- Institute of Novel and Emerging Infectious Diseases, Friedrich-Loeffler-Institut, Federal Research Institute of Animal Health, 17493 Greifswald-Insel Riems, Germany
| | - Elisabeth Woehnke
- Institute of Molecular Virology and Cell Biology, Friedrich-Loeffler-Institut, Federal Research Institute of Animal Health, 17493 Greifswald-Insel Riems, Germany
| | - Luca M Zaeck
- Institute of Molecular Virology and Cell Biology, Friedrich-Loeffler-Institut, Federal Research Institute of Animal Health, 17493 Greifswald-Insel Riems, Germany
| | - Christoph Prönnecke
- Centre for Biotechnology and Biomedicine, Molecular Biological-Biochemical Processing Technology, Leipzig University, 04103 Leipzig, Germany
| | - Michael R Knittler
- Institute of Immunology, Friedrich-Loeffler-Institut, Federal Research Institute of Animal Health, 17493 Greifswald-Greifswald-Insel Riems, Germany
| | - Axel Karger
- Institute of Molecular Virology and Cell Biology, Friedrich-Loeffler-Institut, Federal Research Institute of Animal Health, 17493 Greifswald-Insel Riems, Germany
| | - Sandra Diederich
- Institute of Novel and Emerging Infectious Diseases, Friedrich-Loeffler-Institut, Federal Research Institute of Animal Health, 17493 Greifswald-Insel Riems, Germany
| | - Stefan Finke
- Institute of Molecular Virology and Cell Biology, Friedrich-Loeffler-Institut, Federal Research Institute of Animal Health, 17493 Greifswald-Insel Riems, Germany
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8
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Mire CE, Satterfield BA, Geisbert TW. Nonhuman Primate Models for Nipah and Hendra Virus Countermeasure Evaluation. Methods Mol Biol 2023; 2682:159-173. [PMID: 37610581 DOI: 10.1007/978-1-0716-3283-3_12] [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: 08/24/2023]
Abstract
Hendra and Nipah viruses are henipaviruses that have caused lethal human disease in Australia and Malaysia, Bangladesh, India, and the Philippines, respectively. These viruses are considered Category C pathogens by the US Centers for Disease Control. Nipah virus was recently placed on the World Health Organization Research and Development Blueprint Roadmaps for vaccine and therapeutic development. Given the infrequent and unpredictable nature of henipavirus outbreaks licensure of vaccines and therapeutics will likely require an animal model to demonstrate protective efficacy against henipavirus disease. Studies have shown that nonhuman primates are the most accurate model of human henipavirus disease and would be an important component of any application for licensure of a vaccine or antiviral drug under the US FDA Animal Rule. Nonhuman primate model selection and dosing are discussed regarding vaccine and therapeutic studies against henipaviruses.
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Affiliation(s)
- Chad E Mire
- Galveston National Laboratory, University of Texas Medical Branch, Galveston, TX, USA.
- Department of Microbiology and Immunology, University of Texas Medical Branch, Galveston, TX, USA.
- National Bio- and Agro-defense Facility, Agricultural Research Services, United States Department of Agriculutre, Manhattan, NY, USA.
| | | | - Thomas W Geisbert
- Galveston National Laboratory, University of Texas Medical Branch, Galveston, TX, USA
- Department of Microbiology and Immunology, University of Texas Medical Branch, Galveston, TX, USA
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9
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Lackemeyer MG, Bohannon JK, Holbrook MR. Nipah Virus Aerosol Challenge of Three Distinct Particle Sizes in Nonhuman Primates. Methods Mol Biol 2023; 2682:175-189. [PMID: 37610582 DOI: 10.1007/978-1-0716-3283-3_13] [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: 08/24/2023]
Abstract
Aerosol and inhalational studies of high-consequence pathogens allow researchers to study the disease course and effects of biologicals transmitted through aerosol in a laboratory-controlled environment. Inhalational studies involving Nipah virus with small (1-3 μm), intermediate (6-8 μm), and large particles (10-14 μm) were explored in African green nonhuman primates to determine if the subsequent disease course more closely recapitulated what is observed in Nipah virus human disease. The aerosol procedures outlined describe the different equipment/techniques used to generate the three particle sizes and control the site of particle deposition within this animal model.
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Affiliation(s)
| | - J Kyle Bohannon
- NIAID Integrated Research Facility, Ft. Detrick, Frederick, MD, USA
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10
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The pathogenesis of Nipah virus: A review. Microb Pathog 2022; 170:105693. [DOI: 10.1016/j.micpath.2022.105693] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2021] [Revised: 07/07/2022] [Accepted: 07/22/2022] [Indexed: 11/24/2022]
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Liew YJM, Ibrahim PAS, Ong HM, Chong CN, Tan CT, Schee JP, Gómez Román R, Cherian NG, Wong WF, Chang LY. The Immunobiology of Nipah Virus. Microorganisms 2022; 10:microorganisms10061162. [PMID: 35744680 PMCID: PMC9228579 DOI: 10.3390/microorganisms10061162] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2022] [Revised: 05/31/2022] [Accepted: 06/03/2022] [Indexed: 12/23/2022] Open
Abstract
Nipah virus (NiV) is a highly lethal zoonotic paramyxovirus that emerged in Malaysia in 1998. It is a human pathogen capable of causing severe respiratory infection and encephalitis. The natural reservoir of NiV, Pteropus fruit bats, remains a continuous virus source for future outbreaks, although infection in the bats is largely asymptomatic. NiV provokes serious disease in various mammalian species. In the recent human NiV outbreaks in Bangladesh and India, both bats-to-human and human-to-human transmissions have been observed. NiV has been demonstrated to interfere with the innate immune response via interferon type I signaling, promoting viral dissemination and preventing antiviral response. Studies of humoral immunity in infected NiV patients and animal models have shown that NiV-specific antibodies were produced upon infection and were protective. Studies on cellular immunity response to NiV infection in human and animal models also found that the adaptive immune response, specifically CD4+ and CD8+ T cells, was stimulated upon NiV infection. The experimental vaccines and therapeutic strategies developed have provided insights into the immunological requirements for the development of successful medical countermeasures against NiV. This review summarizes the current understanding of NiV pathogenesis and innate and adaptive immune responses induced upon infection.
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Affiliation(s)
- Yvonne Jing Mei Liew
- Department of Medical Microbiology, Faculty of Medicine, Universiti Malaya, Kuala Lumpur 50603, Malaysia; (Y.J.M.L.); (P.A.S.I.); (H.M.O.); (C.N.C.); (W.F.W.)
- Deputy Vice Chancellor’s Office (Research & Innovation), Universiti Malaya, Kuala Lumpur 50603, Malaysia
| | - Puteri Ainaa S. Ibrahim
- Department of Medical Microbiology, Faculty of Medicine, Universiti Malaya, Kuala Lumpur 50603, Malaysia; (Y.J.M.L.); (P.A.S.I.); (H.M.O.); (C.N.C.); (W.F.W.)
| | - Hui Ming Ong
- Department of Medical Microbiology, Faculty of Medicine, Universiti Malaya, Kuala Lumpur 50603, Malaysia; (Y.J.M.L.); (P.A.S.I.); (H.M.O.); (C.N.C.); (W.F.W.)
| | - Chee Ning Chong
- Department of Medical Microbiology, Faculty of Medicine, Universiti Malaya, Kuala Lumpur 50603, Malaysia; (Y.J.M.L.); (P.A.S.I.); (H.M.O.); (C.N.C.); (W.F.W.)
| | - Chong Tin Tan
- Division of Neurology, Department of Medicine, Faculty of Medicine, Universiti Malaya, Kuala Lumpur 50603, Malaysia; (C.T.T.); (J.P.S.)
| | - Jie Ping Schee
- Division of Neurology, Department of Medicine, Faculty of Medicine, Universiti Malaya, Kuala Lumpur 50603, Malaysia; (C.T.T.); (J.P.S.)
| | - Raúl Gómez Román
- Vaccine Research and Development, Coalition for Epidemic Preparedness Innovation (CEPI), Askekroken 11, 0277 Oslo, Norway; (R.G.R.); (N.G.C.)
| | - Neil George Cherian
- Vaccine Research and Development, Coalition for Epidemic Preparedness Innovation (CEPI), Askekroken 11, 0277 Oslo, Norway; (R.G.R.); (N.G.C.)
| | - Won Fen Wong
- Department of Medical Microbiology, Faculty of Medicine, Universiti Malaya, Kuala Lumpur 50603, Malaysia; (Y.J.M.L.); (P.A.S.I.); (H.M.O.); (C.N.C.); (W.F.W.)
| | - Li-Yen Chang
- Department of Medical Microbiology, Faculty of Medicine, Universiti Malaya, Kuala Lumpur 50603, Malaysia; (Y.J.M.L.); (P.A.S.I.); (H.M.O.); (C.N.C.); (W.F.W.)
- Correspondence:
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12
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Lawrence P, Escudero-Pérez B. Henipavirus Immune Evasion and Pathogenesis Mechanisms: Lessons Learnt from Natural Infection and Animal Models. Viruses 2022; 14:v14050936. [PMID: 35632678 PMCID: PMC9146692 DOI: 10.3390/v14050936] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2022] [Revised: 04/27/2022] [Accepted: 04/27/2022] [Indexed: 02/01/2023] Open
Abstract
Nipah henipavirus (NiV) and Hendra henipavirus (HeV) are zoonotic emerging paramyxoviruses causing severe disease outbreaks in humans and livestock, mostly in Australia, India, Malaysia, Singapore and Bangladesh. Both are bat-borne viruses and in humans, their mortality rates can reach 60% in the case of HeV and 92% for NiV, thus being two of the deadliest viruses known for humans. Several factors, including a large cellular tropism and a wide zoonotic potential, con-tribute to their high pathogenicity. This review provides an overview of HeV and NiV pathogenicity mechanisms and provides a summary of their interactions with the immune systems of their different host species, including their natural hosts bats, spillover-hosts pigs, horses, and humans, as well as in experimental animal models. A better understanding of the interactions between henipaviruses and their hosts could facilitate the development of new therapeutic strategies and vaccine measures against these re-emerging viruses.
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Affiliation(s)
- Philip Lawrence
- Science and Humanities Confluence Research Centre (EA 1598), Catholic University of Lyon (UCLy), 69002 Lyon, France
- Correspondence: (P.L.); (B.E.-P.)
| | - Beatriz Escudero-Pérez
- WHO Collaborating Centre for Arbovirus and Haemorrhagic Fever Reference and Research, Bernhard Nocht Institute for Tropical Medicine, 20359 Hamburg, Germany
- German Centre for Infection Research (DZIF), Partner Site Hamburg-Luebeck-Borstel, 38124 Braunschweig, Germany
- Correspondence: (P.L.); (B.E.-P.)
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13
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A recombinant VSV-vectored vaccine rapidly protects nonhuman primates against lethal Nipah virus disease. Proc Natl Acad Sci U S A 2022; 119:e2200065119. [PMID: 35286211 PMCID: PMC8944267 DOI: 10.1073/pnas.2200065119] [Citation(s) in RCA: 23] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Concern has increased about the pandemic potential of Nipah virus (NiV). Similar to SARS-CoV-2, NiV is an RNA virus that is transmitted by respiratory droplets. There are currently no NiV vaccines licensed for human use. While several preventive vaccines have shown promise in protecting animals against lethal NiV disease, most studies have assessed protection 1 mo after vaccination. However, in order to contain and control outbreaks, vaccines that can rapidly confer protection in days rather than months are needed. Here, we show that a recombinant vesicular stomatitis virus vector expressing the NiV glycoprotein can completely protect monkeys vaccinated 7 d prior to NiV exposure and 67% of animals vaccinated 3 d before NiV challenge. Nipah virus (NiV) is an emerging highly lethal zoonotic disease that, like SARS-CoV-2, can be transmitted via respiratory droplets. Single-injection vaccines that rapidly control NiV outbreaks are needed. To assess the ability of a vaccine to induce fast-acting protection, we immunized African green monkeys with a recombinant vesicular stomatitis virus (VSV) expressing the Bangladesh strain glycoprotein (NiVBG) of NiV (rVSV-ΔG-NiVBG). Monkeys were challenged 3 or 7 d later with a lethal dose of NiVB. All monkeys vaccinated with rVSV-ΔG-NiVBG 7 d prior to NiVB exposure were protected from lethal disease, while 67% of animals vaccinated 3 d before NiVB challenge survived. Vaccine protection correlated with natural killer cell and cytotoxic T cell transcriptional signatures, whereas lethality was linked to sustained interferon signaling. NiV G-specific antibodies in vaccinated survivors corroborated additional transcriptomic findings, supporting activation of humoral immunity. This study demonstrates that rVSV-based vaccines may have utility in rapidly protecting humans against NiV infection.
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14
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Cline C, Bell TM, Facemire P, Zeng X, Briese T, Lipkin WI, Shamblin JD, Esham HL, Donnelly GC, Johnson JC, Hensley LE, Honko AN, Johnston SC. Detailed analysis of the pathologic hallmarks of Nipah virus (Malaysia) disease in the African green monkey infected by the intratracheal route. PLoS One 2022; 17:e0263834. [PMID: 35143571 PMCID: PMC8830707 DOI: 10.1371/journal.pone.0263834] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2021] [Accepted: 01/27/2022] [Indexed: 11/18/2022] Open
Abstract
Disease associated with Nipah virus infection causes a devastating and often fatal spectrum of syndromes predominated by both respiratory and neurologic conditions. Additionally, neurologic sequelae may manifest months to years later after virus exposure or apparent recovery. In the two decades since this disease emerged, much work has been completed in an attempt to understand the pathogenesis and facilitate development of medical countermeasures. Here we provide detailed organ system-specific pathologic findings following exposure of four African green monkeys to 2.41×105 pfu of the Malaysian strain of Nipah virus. Our results further substantiate the African green monkey as a model of human Nipah virus disease, by demonstrating both the respiratory and neurologic components of disease. Additionally, we demonstrate that a chronic phase of disease exists in this model, that may provide an important opportunity to study the enigmatic late onset and relapse encephalitis as it is described in human disease.
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Affiliation(s)
- Curtis Cline
- Pathology Division, United States Army Medical Research Institute of Infectious Diseases, Fort Detrick, Maryland, United States of America
| | - Todd M. Bell
- Pathology Division, United States Army Medical Research Institute of Infectious Diseases, Fort Detrick, Maryland, United States of America
| | - Paul Facemire
- Pathology Division, United States Army Medical Research Institute of Infectious Diseases, Fort Detrick, Maryland, United States of America
| | - Xiankun Zeng
- Pathology Division, United States Army Medical Research Institute of Infectious Diseases, Fort Detrick, Maryland, United States of America
| | - Thomas Briese
- Center for Infection and Immunity, Columbia University Mailman School of Public Health, New York, New York, United States of America
| | - W. Ian Lipkin
- Center for Infection and Immunity, Columbia University Mailman School of Public Health, New York, New York, United States of America
| | - Joshua D. Shamblin
- Veterinary Medicine Division, United States Army Medical Research Institute of Infectious Diseases, Fort Detrick, Maryland, United States of America
| | - Heather L. Esham
- Veterinary Medicine Division, United States Army Medical Research Institute of Infectious Diseases, Fort Detrick, Maryland, United States of America
| | - Ginger C. Donnelly
- Virology Division, United States Army Medical Research Institute of Infectious Diseases, Fort Detrick, Maryland, United States of America
| | - Joshua C. Johnson
- Infectious Disease Research Portfolio, Strategy & Operations, Moderna, Boston, Massachusetts, United States of America
| | - Lisa E. Hensley
- Office of the Chief Scientist, National Institute of Allergy and Infectious Disease Integrated Research Facility, Fort Detrick, Maryland, United States of America
| | - Anna N. Honko
- Nonclinical Studies Unit, Boston University School of Medicine National Emerging Infectious Diseases Laboratories, Boston, Massachusetts, United States of America
| | - Sara C. Johnston
- Virology Division, United States Army Medical Research Institute of Infectious Diseases, Fort Detrick, Maryland, United States of America
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15
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Gamble A, Yeo YY, Butler AA, Tang H, Snedden CE, Mason CT, Buchholz DW, Bingham J, Aguilar HC, Lloyd-Smith JO. Drivers and Distribution of Henipavirus-Induced Syncytia: What Do We Know? Viruses 2021; 13:1755. [PMID: 34578336 PMCID: PMC8472861 DOI: 10.3390/v13091755] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2021] [Revised: 08/21/2021] [Accepted: 08/25/2021] [Indexed: 12/20/2022] Open
Abstract
Syncytium formation, i.e., cell-cell fusion resulting in the formation of multinucleated cells, is a hallmark of infection by paramyxoviruses and other pathogenic viruses. This natural mechanism has historically been a diagnostic marker for paramyxovirus infection in vivo and is now widely used for the study of virus-induced membrane fusion in vitro. However, the role of syncytium formation in within-host dissemination and pathogenicity of viruses remains poorly understood. The diversity of henipaviruses and their wide host range and tissue tropism make them particularly appropriate models with which to characterize the drivers of syncytium formation and the implications for virus fitness and pathogenicity. Based on the henipavirus literature, we summarized current knowledge on the mechanisms driving syncytium formation, mostly acquired from in vitro studies, and on the in vivo distribution of syncytia. While these data suggest that syncytium formation widely occurs across henipaviruses, hosts, and tissues, we identified important data gaps that undermined our understanding of the role of syncytium formation in virus pathogenesis. Based on these observations, we propose solutions of varying complexity to fill these data gaps, from better practices in data archiving and publication for in vivo studies, to experimental approaches in vitro.
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Affiliation(s)
- Amandine Gamble
- Department of Ecology & Evolutionary Biology, University of California Los Angeles, Los Angeles, CA 90095, USA; (A.A.B.); (H.T.); (C.E.S.); (J.O.L.-S.)
| | - Yao Yu Yeo
- Department of Microbiology & Immunology, Cornell University, Ithaca, NY 14850, USA; (Y.Y.Y.); (D.W.B.); (H.C.A.)
| | - Aubrey A. Butler
- Department of Ecology & Evolutionary Biology, University of California Los Angeles, Los Angeles, CA 90095, USA; (A.A.B.); (H.T.); (C.E.S.); (J.O.L.-S.)
| | - Hubert Tang
- Department of Ecology & Evolutionary Biology, University of California Los Angeles, Los Angeles, CA 90095, USA; (A.A.B.); (H.T.); (C.E.S.); (J.O.L.-S.)
| | - Celine E. Snedden
- Department of Ecology & Evolutionary Biology, University of California Los Angeles, Los Angeles, CA 90095, USA; (A.A.B.); (H.T.); (C.E.S.); (J.O.L.-S.)
| | - Christian T. Mason
- Department of Computational Medicine, University of California Los Angeles, Los Angeles, CA 90095, USA;
| | - David W. Buchholz
- Department of Microbiology & Immunology, Cornell University, Ithaca, NY 14850, USA; (Y.Y.Y.); (D.W.B.); (H.C.A.)
| | - John Bingham
- CSIRO Australian Centre for Disease Preparedness, Geelong, VIC 3220, Australia;
| | - Hector C. Aguilar
- Department of Microbiology & Immunology, Cornell University, Ithaca, NY 14850, USA; (Y.Y.Y.); (D.W.B.); (H.C.A.)
| | - James O. Lloyd-Smith
- Department of Ecology & Evolutionary Biology, University of California Los Angeles, Los Angeles, CA 90095, USA; (A.A.B.); (H.T.); (C.E.S.); (J.O.L.-S.)
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16
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Lemaitre J, Naninck T, Delache B, Creppy J, Huber P, Holzapfel M, Bouillier C, Contreras V, Martinon F, Kahlaoui N, Pascal Q, Tricot S, Ducancel F, Vecellio L, Le Grand R, Maisonnasse P. Non-human primate models of human respiratory infections. Mol Immunol 2021; 135:147-164. [PMID: 33895579 PMCID: PMC8062575 DOI: 10.1016/j.molimm.2021.04.010] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2021] [Revised: 04/03/2021] [Accepted: 04/12/2021] [Indexed: 12/25/2022]
Abstract
Respiratory pathogens represent a great burden for humanity and a potential source of new pandemics, as illustrated by the recent emergence of coronavirus disease 2019 (COVID-19). In recent decades, biotechnological advances have led to the development of numerous innovative therapeutic molecules and vaccine immunogens. However, we still lack effective treatments and vaccines against many respiratory pathogens. More than ever, there is a need for a fast, predictive, preclinical pipeline, to keep pace with emerging diseases. Animal models are key for the preclinical development of disease management strategies. The predictive value of these models depends on their ability to reproduce the features of the human disease, the mode of transmission of the infectious agent and the availability of technologies for monitoring infection. This review focuses on the use of non-human primates as relevant preclinical models for the development of prevention and treatment for human respiratory infections.
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Affiliation(s)
- Julien Lemaitre
- Université Paris-Saclay, INSERM, CEA, Center for Immunology of Viral, Autoimmune, Hematological and Bacterial Diseases (IMVA-HB/IDMIT), Fontenay-aux-Roses & Le Kremlin-Bicêtre, France
| | - Thibaut Naninck
- Université Paris-Saclay, INSERM, CEA, Center for Immunology of Viral, Autoimmune, Hematological and Bacterial Diseases (IMVA-HB/IDMIT), Fontenay-aux-Roses & Le Kremlin-Bicêtre, France
| | - Benoît Delache
- Université Paris-Saclay, INSERM, CEA, Center for Immunology of Viral, Autoimmune, Hematological and Bacterial Diseases (IMVA-HB/IDMIT), Fontenay-aux-Roses & Le Kremlin-Bicêtre, France
| | - Justina Creppy
- Université Paris-Saclay, INSERM, CEA, Center for Immunology of Viral, Autoimmune, Hematological and Bacterial Diseases (IMVA-HB/IDMIT), Fontenay-aux-Roses & Le Kremlin-Bicêtre, France; Centre d'Etude des Pathologies Respiratoires, INSERM U1100, Université de Tours, Tours, France
| | - Philippe Huber
- Université Paris-Saclay, INSERM, CEA, Center for Immunology of Viral, Autoimmune, Hematological and Bacterial Diseases (IMVA-HB/IDMIT), Fontenay-aux-Roses & Le Kremlin-Bicêtre, France
| | - Marion Holzapfel
- Université Paris-Saclay, INSERM, CEA, Center for Immunology of Viral, Autoimmune, Hematological and Bacterial Diseases (IMVA-HB/IDMIT), Fontenay-aux-Roses & Le Kremlin-Bicêtre, France
| | - Camille Bouillier
- Université Paris-Saclay, INSERM, CEA, Center for Immunology of Viral, Autoimmune, Hematological and Bacterial Diseases (IMVA-HB/IDMIT), Fontenay-aux-Roses & Le Kremlin-Bicêtre, France
| | - Vanessa Contreras
- Université Paris-Saclay, INSERM, CEA, Center for Immunology of Viral, Autoimmune, Hematological and Bacterial Diseases (IMVA-HB/IDMIT), Fontenay-aux-Roses & Le Kremlin-Bicêtre, France
| | - Frédéric Martinon
- Université Paris-Saclay, INSERM, CEA, Center for Immunology of Viral, Autoimmune, Hematological and Bacterial Diseases (IMVA-HB/IDMIT), Fontenay-aux-Roses & Le Kremlin-Bicêtre, France
| | - Nidhal Kahlaoui
- Université Paris-Saclay, INSERM, CEA, Center for Immunology of Viral, Autoimmune, Hematological and Bacterial Diseases (IMVA-HB/IDMIT), Fontenay-aux-Roses & Le Kremlin-Bicêtre, France
| | - Quentin Pascal
- Université Paris-Saclay, INSERM, CEA, Center for Immunology of Viral, Autoimmune, Hematological and Bacterial Diseases (IMVA-HB/IDMIT), Fontenay-aux-Roses & Le Kremlin-Bicêtre, France
| | - Sabine Tricot
- Université Paris-Saclay, INSERM, CEA, Center for Immunology of Viral, Autoimmune, Hematological and Bacterial Diseases (IMVA-HB/IDMIT), Fontenay-aux-Roses & Le Kremlin-Bicêtre, France
| | - Frédéric Ducancel
- Université Paris-Saclay, INSERM, CEA, Center for Immunology of Viral, Autoimmune, Hematological and Bacterial Diseases (IMVA-HB/IDMIT), Fontenay-aux-Roses & Le Kremlin-Bicêtre, France
| | - Laurent Vecellio
- Centre d'Etude des Pathologies Respiratoires, INSERM U1100, Université de Tours, Tours, France; Plateforme Scientifique et Technique Animaleries (PST-A), Université de Tours, Tours, France
| | - Roger Le Grand
- Université Paris-Saclay, INSERM, CEA, Center for Immunology of Viral, Autoimmune, Hematological and Bacterial Diseases (IMVA-HB/IDMIT), Fontenay-aux-Roses & Le Kremlin-Bicêtre, France
| | - Pauline Maisonnasse
- Université Paris-Saclay, INSERM, CEA, Center for Immunology of Viral, Autoimmune, Hematological and Bacterial Diseases (IMVA-HB/IDMIT), Fontenay-aux-Roses & Le Kremlin-Bicêtre, France.
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17
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Prasad AN, Agans KN, Sivasubramani SK, Geisbert JB, Borisevich V, Mire CE, Lawrence WS, Fenton KA, Geisbert TW. A Lethal Aerosol Exposure Model of Nipah Virus Strain Bangladesh in African Green Monkeys. J Infect Dis 2021; 221:S431-S435. [PMID: 31665351 DOI: 10.1093/infdis/jiz469] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
The high case-fatality rates and potential for use as a biological weapon make Nipah virus (NiV) a significant public health concern. Previous studies assessing the pathogenic potential of NiV delivered by the aerosol route in African green monkeys (AGMs) used the Malaysia strain (NiVM), which has caused lower instances of respiratory illness and person-to-person transmission during human outbreaks than the Bangladesh strain (NiVB). Accordingly, we developed a small particle aerosol model of NiVB infection in AGMs. Consistent with other mucosal AGM models of NiVB infection, we achieved uniform lethality and disease pathogenesis reflective of that observed in humans.
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Affiliation(s)
- Abhishek N Prasad
- Galveston National Laboratory, Galveston, Texas, USA.,Department of Microbiology and Immunology, University of Texas Medical Branch, Galveston, Texas, USA
| | - Krystle N Agans
- Galveston National Laboratory, Galveston, Texas, USA.,Department of Microbiology and Immunology, University of Texas Medical Branch, Galveston, Texas, USA
| | - Satheesh K Sivasubramani
- Galveston National Laboratory, Galveston, Texas, USA.,Department of Microbiology and Immunology, University of Texas Medical Branch, Galveston, Texas, USA
| | - Joan B Geisbert
- Galveston National Laboratory, Galveston, Texas, USA.,Department of Microbiology and Immunology, University of Texas Medical Branch, Galveston, Texas, USA
| | - Viktoriya Borisevich
- Galveston National Laboratory, Galveston, Texas, USA.,Department of Microbiology and Immunology, University of Texas Medical Branch, Galveston, Texas, USA
| | - Chad E Mire
- Galveston National Laboratory, Galveston, Texas, USA.,Department of Microbiology and Immunology, University of Texas Medical Branch, Galveston, Texas, USA
| | - William S Lawrence
- Galveston National Laboratory, Galveston, Texas, USA.,Department of Microbiology and Immunology, University of Texas Medical Branch, Galveston, Texas, USA
| | - Karla A Fenton
- Galveston National Laboratory, Galveston, Texas, USA.,Department of Microbiology and Immunology, University of Texas Medical Branch, Galveston, Texas, USA
| | - Thomas W Geisbert
- Galveston National Laboratory, Galveston, Texas, USA.,Department of Microbiology and Immunology, University of Texas Medical Branch, Galveston, Texas, USA
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18
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Prasad AN, Woolsey C, Geisbert JB, Agans KN, Borisevich V, Deer DJ, Mire CE, Cross RW, Fenton KA, Broder CC, Geisbert TW. Resistance of Cynomolgus Monkeys to Nipah and Hendra Virus Disease Is Associated With Cell-Mediated and Humoral Immunity. J Infect Dis 2021; 221:S436-S447. [PMID: 32022850 DOI: 10.1093/infdis/jiz613] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
Abstract
BACKGROUND The henipaviruses, Hendra virus (HeV) and Nipah virus (NiV), are capable of causing severe and often lethal respiratory and/or neurologic disease in animals and humans. Given the sporadic nature of henipavirus outbreaks, licensure of vaccines and therapeutics for human use will likely require demonstration of efficacy in animal models that faithfully reproduce the human condition. Currently, the African green monkey (AGM) best mimics human henipavirus-induced disease. METHODS The pathogenic potential of HeV and both strains of NiV (Malaysia, Bangladesh) was assessed in cynomolgus monkeys and compared with henipavirus-infected historical control AGMs. Multiplex gene and protein expression assays were used to compare host responses. RESULTS In contrast to AGMs, in which henipaviruses cause severe and usually lethal disease, HeV and NiVs caused only mild or asymptomatic infections in macaques. All henipaviruses replicated in macaques with similar kinetics as in AGMs. Infection in macaques was associated with activation and predicted recruitment of cytotoxic CD8+ T cells, Th1 cells, IgM+ B cells, and plasma cells. Conversely, fatal outcome in AGMs was associated with aberrant innate immune signaling, complement dysregulation, Th2 skewing, and increased secretion of MCP-1. CONCLUSION The restriction factors identified in macaques can be harnessed for development of effective countermeasures against henipavirus disease.
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Affiliation(s)
- Abhishek N Prasad
- Galveston National Laboratory, University of Texas Medical Branch, Galveston.,Department of Microbiology and Immunology, University of Texas Medical Branch, Galveston
| | - Courtney Woolsey
- Galveston National Laboratory, University of Texas Medical Branch, Galveston.,Department of Microbiology and Immunology, University of Texas Medical Branch, Galveston
| | - Joan B Geisbert
- Galveston National Laboratory, University of Texas Medical Branch, Galveston.,Department of Microbiology and Immunology, University of Texas Medical Branch, Galveston
| | - Krystle N Agans
- Galveston National Laboratory, University of Texas Medical Branch, Galveston.,Department of Microbiology and Immunology, University of Texas Medical Branch, Galveston
| | - Viktoriya Borisevich
- Galveston National Laboratory, University of Texas Medical Branch, Galveston.,Department of Microbiology and Immunology, University of Texas Medical Branch, Galveston
| | - Daniel J Deer
- Galveston National Laboratory, University of Texas Medical Branch, Galveston.,Department of Microbiology and Immunology, University of Texas Medical Branch, Galveston
| | - Chad E Mire
- Galveston National Laboratory, University of Texas Medical Branch, Galveston.,Department of Microbiology and Immunology, University of Texas Medical Branch, Galveston
| | - Robert W Cross
- Galveston National Laboratory, University of Texas Medical Branch, Galveston.,Department of Microbiology and Immunology, University of Texas Medical Branch, Galveston
| | - Karla A Fenton
- Galveston National Laboratory, University of Texas Medical Branch, Galveston.,Department of Microbiology and Immunology, University of Texas Medical Branch, Galveston
| | - Christopher C Broder
- Department of Microbiology and Immunology, Uniformed Services University, Bethesda, Maryland
| | - Thomas W Geisbert
- Galveston National Laboratory, University of Texas Medical Branch, Galveston.,Department of Microbiology and Immunology, University of Texas Medical Branch, Galveston
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19
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Arunkumar G, Devadiga S, McElroy AK, Prabhu S, Sheik S, Abdulmajeed J, Robin S, Sushama A, Jayaram A, Nittur S, Shakir M, Kumar KGS, Radhakrishnan C, Sakeena K, Vasudevan J, Reena KJ, Sarita RL, Klena JD, Spiropoulou CF, Laserson KF, Nichol ST. Adaptive Immune Responses in Humans During Nipah Virus Acute and Convalescent Phases of Infection. Clin Infect Dis 2020; 69:1752-1756. [PMID: 30615097 DOI: 10.1093/cid/ciz010] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2018] [Accepted: 01/04/2019] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND Nipah virus (NiV) is 1 of 10 potential causes of imminent public health emergencies of international concern. We investigated the NiV outbreak that occurred in May 2018 in Kerala, India. Here we describe the longitudinal characteristics of cell-mediated and humoral immune responses to NiV infection during the acute and convalescent phases in 2 human survivors. METHODS Serial blood samples were obtained from the only 2 survivors of the NiV outbreak in Kerala. We used flow cytometry to determine the absolute T-lymphocyte and B-lymphocyte counts and the phenotypes of both T and B cells. We also detected and quantitated the humoral immune response to NiV by virus-specific immunoglobulin M (IgM) and immunoglobulin G (IgG) enzyme-linked immunosorbent assay. RESULTS Absolute numbers of T lymphocytes remained within normal limits throughout the period of illness studied in both survivors. However, a marked elevation of activated CD8 T cells was observed in both cases. More than 30% of total CD8 T cells expressed Ki67, indicating active proliferation. Proliferating (Ki-67+) CD8 T cells expressed high levels of granzyme B and PD-1, consistent with the profile of acute effector cells. Total B-lymphocyte, activated B-cell, and plasmablast counts were also elevated in NiV survivors. These individuals developed detectable NiV-specific IgM and IgG antibodies within a week of disease onset. Clearance of NiV RNA from blood preceded the appearance of virus-specific IgG and coincided with the peak of activated CD8 T cells. CONCLUSIONS We describe for the first time longitudinal kinetic data on the activation status of human B- and T-cell populations during acute NiV infection. While marked CD8 T-cell activation was observed with effector characteristics, activated CD4 T cells were less prominent.
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Affiliation(s)
| | - Santhosha Devadiga
- Manipal Centre for Virus Research, Manipal Academy of Higher Education, Karnataka, India
| | - Anita K McElroy
- Centers for Disease Control and Prevention, Atlanta, Georgia.,Department of Pediatrics, University of Pittsburgh, Pennsylvania
| | - Suresh Prabhu
- Manipal Centre for Virus Research, Manipal Academy of Higher Education, Karnataka, India
| | - Shahin Sheik
- Manipal Centre for Virus Research, Manipal Academy of Higher Education, Karnataka, India
| | - Jazeel Abdulmajeed
- Manipal Centre for Virus Research, Manipal Academy of Higher Education, Karnataka, India
| | - Sudandiradas Robin
- Manipal Centre for Virus Research, Manipal Academy of Higher Education, Karnataka, India
| | - Aswathyraj Sushama
- Manipal Centre for Virus Research, Manipal Academy of Higher Education, Karnataka, India
| | - Anup Jayaram
- Manipal Centre for Virus Research, Manipal Academy of Higher Education, Karnataka, India
| | - Sudheesh Nittur
- Manipal Centre for Virus Research, Manipal Academy of Higher Education, Karnataka, India
| | - Mohammed Shakir
- Manipal Centre for Virus Research, Manipal Academy of Higher Education, Karnataka, India
| | | | | | - Karayil Sakeena
- Directorate of Health Services, Government of Kerala, Thiruvananthapuram, India
| | - Jayasree Vasudevan
- Directorate of Health Services, Government of Kerala, Thiruvananthapuram, India
| | | | | | - John D Klena
- Centers for Disease Control and Prevention, Atlanta, Georgia
| | | | | | - Stuart T Nichol
- Centers for Disease Control and Prevention, Atlanta, Georgia
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20
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Lee JH, Hammoud DA, Cong Y, Huzella LM, Castro MA, Solomon J, Laux J, Lackemeyer M, Bohannon JK, Rojas O, Byrum R, Adams R, Ragland D, St Claire M, Munster V, Holbrook MR. The Use of Large-Particle Aerosol Exposure to Nipah Virus to Mimic Human Neurological Disease Manifestations in the African Green Monkey. J Infect Dis 2020; 221:S419-S430. [PMID: 31687756 PMCID: PMC7368178 DOI: 10.1093/infdis/jiz502] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
Nipah virus (NiV) is an emerging virus associated with outbreaks of acute respiratory disease and encephalitis. To develop a neurological model for NiV infection, we exposed 6 adult African green monkeys to a large-particle (approximately 12 μm) aerosol containing NiV (Malaysian isolate). Brain magnetic resonance images were obtained at baseline, every 3 days after exposure for 2 weeks, and then weekly until week 8 after exposure. Four of six animals showed abnormalities reminiscent of human disease in brain magnetic resonance images. Abnormalities ranged from cytotoxic edema to vasogenic edema. The majority of lesions were small infarcts, and a few showed inflammatory or encephalitic changes. Resolution or decreased size in some lesions resembled findings reported in patients with NiV infection. Histological lesions in the brain included multifocal areas of encephalomalacia, corresponding to known ischemic foci. In other regions of the brain there was evidence of vasculitis, with perivascular infiltrates of inflammatory cells and rare intravascular fibrin thrombi. This animal model will help us better understand the acute neurological features of NiV infection and develop therapeutic approaches for managing disease caused by NiV infection.
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Affiliation(s)
- Ji Hyun Lee
- National Institute of Allergy and Infectious Diseases, Integrated Research Facility, Ft Detrick, Frederick, Maryland, USA
| | - Dima A Hammoud
- Center for Infectious Disease Imaging, National Institutes of Health, Clinical Center, Bethesda, Maryland, USA
| | - Yu Cong
- National Institute of Allergy and Infectious Diseases, Integrated Research Facility, Ft Detrick, Frederick, Maryland, USA
| | - Louis M Huzella
- National Institute of Allergy and Infectious Diseases, Integrated Research Facility, Ft Detrick, Frederick, Maryland, USA
| | - Marcelo A Castro
- National Institute of Allergy and Infectious Diseases, Integrated Research Facility, Ft Detrick, Frederick, Maryland, USA
| | - Jeffrey Solomon
- Clinical Monitoring Research Program Directorate, Frederick National Laboratory for Cancer Research sponsored by the National Cancer Institute, Frederick, Maryland, USA
| | - Joseph Laux
- National Institute of Allergy and Infectious Diseases, Integrated Research Facility, Ft Detrick, Frederick, Maryland, USA
| | - Matthew Lackemeyer
- National Institute of Allergy and Infectious Diseases, Integrated Research Facility, Ft Detrick, Frederick, Maryland, USA
| | - J Kyle Bohannon
- National Institute of Allergy and Infectious Diseases, Integrated Research Facility, Ft Detrick, Frederick, Maryland, USA
| | - Oscar Rojas
- National Institute of Allergy and Infectious Diseases, Integrated Research Facility, Ft Detrick, Frederick, Maryland, USA
| | - Russ Byrum
- National Institute of Allergy and Infectious Diseases, Integrated Research Facility, Ft Detrick, Frederick, Maryland, USA
| | - Ricky Adams
- National Institute of Allergy and Infectious Diseases, Integrated Research Facility, Ft Detrick, Frederick, Maryland, USA
| | - Danny Ragland
- National Institute of Allergy and Infectious Diseases, Integrated Research Facility, Ft Detrick, Frederick, Maryland, USA
| | - Marisa St Claire
- National Institute of Allergy and Infectious Diseases, Integrated Research Facility, Ft Detrick, Frederick, Maryland, USA
| | - Vincent Munster
- Virus Ecology Unit, Laboratory of Virology, Rocky Mountain Laboratories, Hamilton, Montana, USA
| | - Michael R Holbrook
- National Institute of Allergy and Infectious Diseases, Integrated Research Facility, Ft Detrick, Frederick, Maryland, USA
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21
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Geisbert JB, Borisevich V, Prasad AN, Agans KN, Foster SL, Deer DJ, Cross RW, Mire CE, Geisbert TW, Fenton KA. An Intranasal Exposure Model of Lethal Nipah Virus Infection in African Green Monkeys. J Infect Dis 2020; 221:S414-S418. [PMID: 31665362 PMCID: PMC7213566 DOI: 10.1093/infdis/jiz391] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023] Open
Abstract
Due to the difficulty in conducting clinical trials for vaccines and treatments against Nipah virus (NiV), licensure will likely require animal models, most importantly non-human primates (NHPs). The NHP models of infection have primarily relied on intratracheal instillation or small particle aerosolization of NiV. However, neither of these routes adequately models natural mucosal exposure to NiV. To develop a more natural NHP model, we challenged African green monkeys with the Bangladesh strain of NiV by the intranasal route using the laryngeal mask airway (LMA) mucosal atomization device (MAD). LMA MAD exposure resulted in uniformly lethal disease that accurately reflected the human condition.
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Affiliation(s)
- Joan B Geisbert
- Galveston National Laboratory, Galveston
- Department of Microbiology and Immunology, University of Texas Medical Branch, Galveston
| | - Viktoriya Borisevich
- Galveston National Laboratory, Galveston
- Department of Microbiology and Immunology, University of Texas Medical Branch, Galveston
| | - Abhishek N Prasad
- Galveston National Laboratory, Galveston
- Department of Microbiology and Immunology, University of Texas Medical Branch, Galveston
| | - Krystle N Agans
- Galveston National Laboratory, Galveston
- Department of Microbiology and Immunology, University of Texas Medical Branch, Galveston
| | - Stephanie L Foster
- Galveston National Laboratory, Galveston
- Department of Microbiology and Immunology, University of Texas Medical Branch, Galveston
| | - Daniel J Deer
- Galveston National Laboratory, Galveston
- Department of Microbiology and Immunology, University of Texas Medical Branch, Galveston
| | - Robert W Cross
- Galveston National Laboratory, Galveston
- Department of Microbiology and Immunology, University of Texas Medical Branch, Galveston
| | - Chad E Mire
- Galveston National Laboratory, Galveston
- Department of Microbiology and Immunology, University of Texas Medical Branch, Galveston
| | - Thomas W Geisbert
- Galveston National Laboratory, Galveston
- Department of Microbiology and Immunology, University of Texas Medical Branch, Galveston
| | - Karla A Fenton
- Galveston National Laboratory, Galveston
- Department of Microbiology and Immunology, University of Texas Medical Branch, Galveston
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22
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Pelissier R, Iampietro M, Horvat B. Recent advances in the understanding of Nipah virus immunopathogenesis and anti-viral approaches. F1000Res 2019; 8. [PMID: 31656582 PMCID: PMC6798321 DOI: 10.12688/f1000research.19975.1] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 10/08/2019] [Indexed: 12/24/2022] Open
Abstract
Nipah virus (NiV) is a highly lethal zoonotic paramyxovirus that emerged at the end of last century as a human pathogen capable of causing severe acute respiratory infection and encephalitis. Although NiV provokes serious diseases in numerous mammalian species, the infection seems to be asymptomatic in NiV natural hosts, the fruit bats, which provide a continuous virus source for further outbreaks. Consecutive human-to-human transmission has been frequently observed during outbreaks in Bangladesh and India. NiV was shown to interfere with the innate immune response and interferon type I signaling, restraining the anti-viral response and permitting viral spread. Studies of adaptive immunity in infected patients and animal models have suggested an unbalanced immune response during NiV infection. Here, we summarize some of the recent studies of NiV pathogenesis and NiV-induced modulation of both innate and adaptive immune responses, as well as the development of novel prophylactic and therapeutic approaches, necessary to control this highly lethal emerging infection.
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Affiliation(s)
- Rodolphe Pelissier
- International Center for Infectiology Research-CIRI, Immunobiology of Viral Infections team, Inserm U1111, CNRS, UMR5308, University of Lyon, Ecole Normale Supérieure de Lyon, France
| | - Mathieu Iampietro
- International Center for Infectiology Research-CIRI, Immunobiology of Viral Infections team, Inserm U1111, CNRS, UMR5308, University of Lyon, Ecole Normale Supérieure de Lyon, France
| | - Branka Horvat
- International Center for Infectiology Research-CIRI, Immunobiology of Viral Infections team, Inserm U1111, CNRS, UMR5308, University of Lyon, Ecole Normale Supérieure de Lyon, France
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23
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Escaffre O, Hill T, Ikegami T, Juelich TL, Smith JK, Zhang L, Perez DE, Atkins C, Park A, Lawrence WS, Sivasubramani SK, Peel JE, Peterson JW, Lee B, Freiberg AN. Experimental Infection of Syrian Hamsters With Aerosolized Nipah Virus. J Infect Dis 2019; 218:1602-1610. [PMID: 29912426 DOI: 10.1093/infdis/jiy357] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2018] [Accepted: 06/12/2018] [Indexed: 01/08/2023] Open
Abstract
Background Nipah virus (NiV) is a paramyxovirus (genus Henipavirus) that can cause severe respiratory illness and encephalitis in humans. Transmission occurs through consumption of NiV-contaminated foods, and contact with NiV-infected animals or human body fluids. However, it is unclear whether aerosols derived from aforesaid sources or others also contribute to transmission, and current knowledge on NiV-induced pathogenicity after small-particle aerosol exposure is still limited. Methods Infectivity, pathogenicity, and real-time dissemination of aerosolized NiV in Syrian hamsters was evaluated using NiV-Malaysia (NiV-M) and/or its recombinant expressing firefly luciferase (rNiV-FlucNP). Results Both viruses had an equivalent pathogenicity in hamsters, which developed respiratory and neurological symptoms of disease, similar to using intranasal route, with no direct correlations to the dose. We showed that virus replication was predominantly initiated in the lower respiratory tract and, although delayed, also intensely in the oronasal cavity and possibly the brain, with gradual increase of signal in these regions until at least day 5-6 postinfection. Conclusion Hamsters infected with small-particle aerosolized NiV undergo similar clinical manifestations of the disease as previously described using liquid inoculum, and exhibit histopathological lesions consistent with NiV patient reports. NiV droplets could therefore play a role in transmission by close contact.
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Affiliation(s)
- Olivier Escaffre
- Department of Pathology, University of Texas Medical Branch, Galveston
| | - Terence Hill
- Department of Pathology, University of Texas Medical Branch, Galveston
| | - Tetsuro Ikegami
- Department of Pathology, University of Texas Medical Branch, Galveston.,Center for Biodefense and Emerging Infectious Diseases, University of Texas Medical Branch, Galveston.,Institute for Human Infections and Immunity, University of Texas Medical Branch, Galveston
| | - Terry L Juelich
- Department of Pathology, University of Texas Medical Branch, Galveston
| | - Jennifer K Smith
- Department of Pathology, University of Texas Medical Branch, Galveston
| | - Lihong Zhang
- Department of Pathology, University of Texas Medical Branch, Galveston
| | - David E Perez
- Department of Pathology, University of Texas Medical Branch, Galveston
| | - Colm Atkins
- Department of Pathology, University of Texas Medical Branch, Galveston
| | - Arnold Park
- Department of Pathology and Immunology, Washington University School of Medicine, St Louis, Missouri
| | - William S Lawrence
- Department of Microbiology and Immunology, University of Texas Medical Branch, Galveston
| | | | - Jennifer E Peel
- Department of Microbiology and Immunology, University of Texas Medical Branch, Galveston
| | - Johnny W Peterson
- Institute for Human Infections and Immunity, University of Texas Medical Branch, Galveston.,Department of Microbiology and Immunology, University of Texas Medical Branch, Galveston
| | - Benhur Lee
- Department of Microbiology, Icahn School of Medicine at Mount Sinai, New York, New York
| | - Alexander N Freiberg
- Department of Pathology, University of Texas Medical Branch, Galveston.,Center for Biodefense and Emerging Infectious Diseases, University of Texas Medical Branch, Galveston.,Institute for Human Infections and Immunity, University of Texas Medical Branch, Galveston
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24
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Mathieu C, Porotto M, Figueira TN, Horvat B, Moscona A. Fusion Inhibitory Lipopeptides Engineered for Prophylaxis of Nipah Virus in Primates. J Infect Dis 2019; 218:218-227. [PMID: 29566184 PMCID: PMC6009590 DOI: 10.1093/infdis/jiy152] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2018] [Accepted: 03/15/2018] [Indexed: 11/14/2022] Open
Abstract
Background The emerging zoonotic paramyxovirus Nipah virus (NiV) causes severe respiratory and neurological disease in humans, with high fatality rates. Nipah virus can be transmitted via person-to-person contact, posing a high risk for epidemic outbreaks. However, a broadly applicable approach for human NiV outbreaks in field settings is lacking. Methods We engineered new antiviral lipopeptides and analyzed in vitro fusion inhibition to identify an optimal candidate for prophylaxis of NiV infection in the lower respiratory tract, and we assessed antiviral efficiency in 2 different animal models. Results We show that lethal NiV infection can be prevented with lipopeptides delivered via the respiratory route in both hamsters and nonhuman primates. By targeting retention of peptides for NiV prophylaxis in the respiratory tract, we avoid its systemic delivery in individuals who need only prevention, and thus we increase the safety of treatment and enhance utility of the intervention. Conclusions The experiments provide a proof of concept for the use of antifusion lipopeptides for prophylaxis of lethal NiV. These results advance the goal of rational development of potent lipopeptide inhibitors with desirable pharmacokinetic and biodistribution properties and a safe effective delivery method to target NiV and other pathogenic viruses.
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Affiliation(s)
- Cyrille Mathieu
- Department of Pediatrics, Columbia University Medical Center, New York.,Center for Host-Pathogen Interaction, Columbia University Medical Center, New York.,CIRI, International Center for Infectiology Research, Immunobiology of Viral Infections Team, Inserm, University Claude Bernard Lyon 1, CNRS, UMR5308, Ecole Normale Supérieure de Lyon, France
| | - Matteo Porotto
- Department of Pediatrics, Columbia University Medical Center, New York.,Center for Host-Pathogen Interaction, Columbia University Medical Center, New York
| | - Tiago N Figueira
- Department of Pediatrics, Columbia University Medical Center, New York.,Center for Host-Pathogen Interaction, Columbia University Medical Center, New York.,Instituto de Medicina Molecular, Faculdade de Medicina, Universidade de Lisboa, Lisbon, Portugal
| | - Branka Horvat
- CIRI, International Center for Infectiology Research, Immunobiology of Viral Infections Team, Inserm, University Claude Bernard Lyon 1, CNRS, UMR5308, Ecole Normale Supérieure de Lyon, France
| | - Anne Moscona
- Department of Pediatrics, Columbia University Medical Center, New York.,Department of Microbiology and Immunology, Columbia University Medical Center, New York.,Department of Physiology and Biophysics, Columbia University Medical Center, New York.,Center for Host-Pathogen Interaction, Columbia University Medical Center, New York
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25
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Stroh E, Fischer K, Schwaiger T, Sauerhering L, Franzke K, Maisner A, Groschup MH, Blohm U, Diederich S. Henipavirus-like particles induce a CD8 T cell response in C57BL/6 mice. Vet Microbiol 2019; 237:108405. [PMID: 31561922 DOI: 10.1016/j.vetmic.2019.108405] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2019] [Revised: 09/01/2019] [Accepted: 09/02/2019] [Indexed: 12/13/2022]
Abstract
Nipah virus (NiV), a BSL-4 pathogen, belongs to the genus Henipavirus within the family Paramyxoviridae. To date, no effective vaccine is available. Although most of the current vaccine studies aim to induce a neutralizing antibody response, it has become evident that a promising vaccine should target both, humoral and cell-mediated immune response. Virus-like particles (VLPs) have been shown to activate both arms of the adaptive immune response. In our study, VLPs composed of the NiV surface glycoproteins G and F and the matrix protein of the closely related Hendra virus (HeV M) induced both, a neutralizing antibody response and an antigen-specific CD8 T cell response with proliferation, IFN-γ expression and Th1 cytokine secretion in C57BL/6 mice. In contrast, in BALB/c mice only a neutralizing antibody response was observed. All three viral proteins included in the VLPs were shown to harbor CD8 T cell epitopes; however, the combination of all three proteins enhanced the magnitude of the CD8 T cell response. To conclude, VLPs represent a promising vaccine candidate, as they induce humoral as well as CD8 T cell-mediated immune responses.
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Affiliation(s)
- Eileen Stroh
- Institute of Novel and Emerging Infectious Diseases, Friedrich-Loeffler-Institut, Federal Research Institute for Animal Health, Greifswald-Insel Riems, Germany
| | - Kerstin Fischer
- Institute of Novel and Emerging Infectious Diseases, Friedrich-Loeffler-Institut, Federal Research Institute for Animal Health, Greifswald-Insel Riems, Germany
| | - Theresa Schwaiger
- Department of Experimental Animal Facilities and Biorisk Management, Friedrich-Loeffler-Institut, Federal Research Institute for Animal Health, Greifswald-Insel Riems, Germany
| | - Lucie Sauerhering
- Institute for Virology, Philipps-University Marburg, Marburg, Germany
| | - Kati Franzke
- Institute of Infectology, Friedrich-Loeffler-Institut, Federal Research Institute for Animal Health, Greifswald-Insel Riems, Germany
| | - Andrea Maisner
- Institute for Virology, Philipps-University Marburg, Marburg, Germany
| | - Martin H Groschup
- Institute of Novel and Emerging Infectious Diseases, Friedrich-Loeffler-Institut, Federal Research Institute for Animal Health, Greifswald-Insel Riems, Germany
| | - Ulrike Blohm
- Institute of Immunology, Friedrich-Loeffler-Institut, Federal Research Institute for Animal Health, Greifswald-Insel Riems, Germany
| | - Sandra Diederich
- Institute of Novel and Emerging Infectious Diseases, Friedrich-Loeffler-Institut, Federal Research Institute for Animal Health, Greifswald-Insel Riems, Germany.
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26
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Liu J, Coffin KM, Johnston SC, Babka AM, Bell TM, Long SY, Honko AN, Kuhn JH, Zeng X. Nipah virus persists in the brains of nonhuman primate survivors. JCI Insight 2019; 4:129629. [PMID: 31341108 PMCID: PMC6675545 DOI: 10.1172/jci.insight.129629] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2019] [Accepted: 06/13/2019] [Indexed: 01/27/2023] Open
Abstract
Nipah virus (NiV) is an emerging zoonotic paramyxovirus that causes highly lethal henipavirus encephalitis in humans. Survivors develop various neurologic sequelae, including late-onset and relapsing encephalitis, several months up to several years following initial infection. However, the underlying pathology and disease mechanisms of persistent neurologic complications remain unknown. Here, we demonstrate persistent NiV infection in the brains of grivets that survived experimental exposure to NiV. Encephalitis affected the entire brains, with the majority of NiV detected in the neurons and microglia of the brainstems, cerebral cortices, and cerebella. We identified the vascular endothelium in the brain as an initial target of NiV infection during the acute phase of disease, indicating a primary path of entry for NiV into the brain. Notably, we were unable to detect NiV anywhere else except the brains in the examined survivors. Our findings indicate that late-onset and relapsing encephalitis of NiV in human survivors may be due to viral persistence in the brain and shed light on the pathogenesis of chronic henipavirus encephalitis.
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Affiliation(s)
- Jun Liu
- United States Army Medical Research Institute of Infectious Diseases, Fort Detrick, Frederick, Maryland, USA
| | - Kayla M. Coffin
- United States Army Medical Research Institute of Infectious Diseases, Fort Detrick, Frederick, Maryland, USA
| | - Sara C. Johnston
- United States Army Medical Research Institute of Infectious Diseases, Fort Detrick, Frederick, Maryland, USA
| | - April M. Babka
- United States Army Medical Research Institute of Infectious Diseases, Fort Detrick, Frederick, Maryland, USA
| | - Todd M. Bell
- United States Army Medical Research Institute of Infectious Diseases, Fort Detrick, Frederick, Maryland, USA
| | - Simon Y. Long
- United States Army Medical Research Institute of Infectious Diseases, Fort Detrick, Frederick, Maryland, USA
| | - Anna N. Honko
- United States Army Medical Research Institute of Infectious Diseases, Fort Detrick, Frederick, Maryland, USA
| | - Jens H. Kuhn
- Integrated Research Facility at Fort Detrick, National Institute of Allergy and Infectious Diseases, NIH, Fort Detrick, Frederick, Maryland, USA
| | - Xiankun Zeng
- United States Army Medical Research Institute of Infectious Diseases, Fort Detrick, Frederick, Maryland, USA
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27
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Mire CE, Geisbert JB, Agans KN, Versteeg KM, Deer DJ, Satterfield BA, Fenton KA, Geisbert TW. Use of Single-Injection Recombinant Vesicular Stomatitis Virus Vaccine to Protect Nonhuman Primates Against Lethal Nipah Virus Disease. Emerg Infect Dis 2019; 25:1144-1152. [PMID: 31107231 PMCID: PMC6537706 DOI: 10.3201/eid2506.181620] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Nipah virus (NiV) is a zoonotic pathogen that causes high case-fatality rates (CFRs) in humans. Two NiV strains have caused outbreaks: the Malaysia strain (NiVM), discovered in 1998-1999 in Malaysia and Singapore (≈40% CFR); and the Bangladesh strain (NiVB), discovered in Bangladesh and India in 2001 (≈80% CFR). Recently, NiVB in African green monkeys resulted in a more severe and lethal disease than NiVM. No NiV vaccines or treatments are licensed for human use. We assessed replication-restricted single-injection recombinant vesicular stomatitis vaccine NiV vaccine vectors expressing the NiV glycoproteins against NiVB challenge in African green monkeys. All vaccinated animals survived to the study endpoint without signs of NiV disease; all showed development of NiV F Ig, NiV G IgG, or both, as well as neutralizing antibody titers. These data show protective efficacy against a stringent and relevant NiVB model of human infection.
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28
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Lara A, Cong Y, Jahrling PB, Mednikov M, Postnikova E, Yu S, Munster V, Holbrook MR. Peripheral immune response in the African green monkey model following Nipah-Malaysia virus exposure by intermediate-size particle aerosol. PLoS Negl Trop Dis 2019; 13:e0007454. [PMID: 31166946 PMCID: PMC6576798 DOI: 10.1371/journal.pntd.0007454] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2018] [Revised: 06/17/2019] [Accepted: 05/09/2019] [Indexed: 12/17/2022] Open
Abstract
The ability to appropriately mimic human disease is critical for using animal models as a tool for understanding virus pathogenesis. In the case of Nipah virus (NiV), infection of humans appears to occur either through inhalation, contact with or consumption of infected material. In two of these circumstances, respiratory or sinusoidal exposure represents a likely route of infection. In this study, intermediate-size aerosol particles (~7 μm) of NiV-Malaysia were used to mimic potential routes of exposure by focusing viral deposition in the upper respiratory tract. Our previous report showed this route of exposure extended the disease course and a single animal survived the infection. Here, analysis of the peripheral immune response found minimal evidence of systemic inflammation and depletion of B cells during acute disease. However, the animal that survived infection developed an early IgM response with rapid development of neutralizing antibodies that likely afforded protection. The increase in NiV-specific antibodies correlated with an expansion of the B cell population in the survivor. Cell-mediated immunity was not clearly apparent in animals that succumbed during the acute phase of disease. However, CD4+ and CD8+ effector memory cells increased in the survivor with correlating increases in cytokines and chemokines associated with cell-mediated immunity. Interestingly, kinetic changes of the CD4+ and CD8bright T cell populations over the course of acute disease were opposite from animals that succumbed to infection. In addition, increases in NK cells and basophils during convalescence of the surviving animal were also evident, with viral antigen found in NK cells. These data suggest that a systemic inflammatory response and "cytokine storm" are not major contributors to NiV-Malaysia pathogenesis in the AGM model using this exposure route. Further, these data demonstrate that regulation of cell-mediated immunity, in addition to rapid production of NiV specific antibodies, may be critical for surviving NiV infection.
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Affiliation(s)
- Abigail Lara
- NIAID Integrated Research Facility, Ft. Detrick, Frederick, MD, United States of America
| | - Yu Cong
- NIAID Integrated Research Facility, Ft. Detrick, Frederick, MD, United States of America
| | - Peter B. Jahrling
- NIAID Integrated Research Facility, Ft. Detrick, Frederick, MD, United States of America
| | - Mark Mednikov
- NIAID Integrated Research Facility, Ft. Detrick, Frederick, MD, United States of America
| | - Elena Postnikova
- NIAID Integrated Research Facility, Ft. Detrick, Frederick, MD, United States of America
| | - Shuiqing Yu
- NIAID Integrated Research Facility, Ft. Detrick, Frederick, MD, United States of America
| | - Vincent Munster
- Virus Ecology Unit, Laboratory of Virology, Rocky Mountain Laboratories, Hamilton, MT, United States of America
| | - Michael R. Holbrook
- NIAID Integrated Research Facility, Ft. Detrick, Frederick, MD, United States of America
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Mazzola LT, Kelly-Cirino C. Diagnostics for Nipah virus: a zoonotic pathogen endemic to Southeast Asia. BMJ Glob Health 2019; 4:e001118. [PMID: 30815286 PMCID: PMC6361328 DOI: 10.1136/bmjgh-2018-001118] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2018] [Revised: 09/23/2018] [Accepted: 09/24/2018] [Indexed: 11/29/2022] Open
Abstract
Nipah virus (NiV) is an emerging pathogen that, unlike other priority pathogens identified by WHO, is endemic to Southeast Asia. It is most commonly transmitted through exposure to saliva or excrement from the Pteropus fruit bat, or direct contact with intermediate animal hosts, such as pigs. NiV infection causes severe febrile encephalitic disease and/or respiratory disease; treatment options are limited to supportive care. A number of in-house diagnostic assays for NiV using serological and nucleic acid amplification techniques have been developed for NiV and are used in laboratory settings, including some early multiplex panels for differentiation of NiV infection from other febrile diseases. However, given the often rural and remote nature of NiV outbreak settings, there remains a need for rapid diagnostic tests that can be implemented at the point of care. Additionally, more reliable assays for surveillance of communities and livestock will be vital to achieving a better understanding of the ecology of the fruit bat host and transmission risk to other intermediate hosts, enabling implementation of a ‘One Health’ approach to outbreak prevention and the management of this zoonotic disease. An improved understanding of NiV viral diversity and infection kinetics or dynamics will be central to the development of new diagnostics, and access to clinical specimens must be improved to enable effective validation and external quality assessments. Target product profiles for NiV diagnostics should be refined to take into account these outstanding needs.
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Affiliation(s)
- Laura T Mazzola
- Foundation for Innovative New Diagnostics (FIND), Emerging Threats Programme, Geneva, Switzerland
| | - Cassandra Kelly-Cirino
- Foundation for Innovative New Diagnostics (FIND), Emerging Threats Programme, Geneva, Switzerland
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Shapshak P, Balaji S, Kangueane P, Chiappelli F, Somboonwit C, Menezes LJ, Sinnott JT. Innovative Technologies for Advancement of WHO Risk Group 4 Pathogens Research. GLOBAL VIROLOGY III: VIROLOGY IN THE 21ST CENTURY 2019. [PMCID: PMC7122670 DOI: 10.1007/978-3-030-29022-1_15] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Affiliation(s)
- Paul Shapshak
- Department of Internal Medicine, University of South Florida, Tampa, FL USA
| | - Seetharaman Balaji
- Department of Biotechnology, Manipal Institute of Technology, Manipal Academy of Higher Education, Manipal, Karnataka India
| | | | - Francesco Chiappelli
- Oral Biology and Medicine, CHS 63-090, UCLA School of Dentistry Oral Biology and Medicine, CHS 63-090, Los Angeles, CA USA
| | | | - Lynette J. Menezes
- Department of Internal Medicine, University of South Florida, Tampa, FL USA
| | - John T. Sinnott
- Department of Internal Medicine, University of South Florida, Tampa, FL USA
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Hammoud DA, Lentz MR, Lara A, Bohannon JK, Feuerstein I, Huzella L, Jahrling PB, Lackemeyer M, Laux J, Rojas O, Sayre P, Solomon J, Cong Y, Munster V, Holbrook MR. Aerosol exposure to intermediate size Nipah virus particles induces neurological disease in African green monkeys. PLoS Negl Trop Dis 2018; 12:e0006978. [PMID: 30462637 PMCID: PMC6281276 DOI: 10.1371/journal.pntd.0006978] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2018] [Revised: 12/05/2018] [Accepted: 11/06/2018] [Indexed: 12/17/2022] Open
Abstract
Nipah virus (NiV) infection can lead to severe respiratory or neurological disease in humans. Transmission of NiV has been shown to occur through contact with virus contaminated fomites or consumption of contaminated food. Previous results using the African green monkey (AGM) model of NiV infection identified aspects of infection that, while similar to humans, don’t fully recapitulate disease. Previous studies also demonstrate near uniform lethality that is not consistent with human NiV infection. In these studies, aerosol exposure using an intermediate particle size (7μm) was used to mimic potential human exposure by facilitating virus deposition in the upper respiratory tract. Computed tomography evaluation found some animals developed pulmonary parenchymal disease including consolidations, ground-glass opacities, and reactive adenopathy. Despite the lack of neurological signs, magnetic resonance imaging identified distinct brain lesions in three animals, similar to those previously reported in NiV-infected patients. Immunological characterization of tissues collected at necropsy suggested a local pulmonary inflammatory response with increased levels of macrophages in the lung, but a limited neurologic response. These data provide the first clear evidence of neurological involvement in the AGM that recapitulates human disease. With the development of a disease model that is more representative of human disease, these data suggest that NiV infection in the AGM may be appropriate for evaluating therapeutic countermeasures directed at virus-induced neuropathogenesis. The development of effective therapeutic approaches to the treatment of human diseases requires an understanding of the disease process induced by an infectious agent. Historically the development of medical countermeasures for highly pathogenic viruses required the use of a uniformly lethal animal model. While this approach is useful in some regards, it frequently does not provide a true indication of the disease process. In the work presented here, the approach was to use a virus exposure method that mimicked a potential route of human exposure and used a dose that might be more representative of one a human would receive. Using this method and advanced medical imaging techniques, we were able to demonstrate an extended disease course with mixed respiratory and neurological disease like that seen in humans. This study also found that the response to infection in the lungs was inflammatory and that the disease in the brain was limited despite clear evidence of lesions. These data support the development of animal models that mimic human disease and allow for the identification of potential therapeutic approaches that target the disease process rather than only the virus.
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Affiliation(s)
- Dima A. Hammoud
- Center for Infectious Disease Imaging, Radiology and Imaging Sciences, Clinical Center, NIH, Bethesda, Maryland, United States of America
| | - Margaret R. Lentz
- NIAID Integrated Research Facility, Ft. Detrick, Frederick, MD, United States of America
| | - Abigail Lara
- NIAID Integrated Research Facility, Ft. Detrick, Frederick, MD, United States of America
| | - Jordan K. Bohannon
- NIAID Integrated Research Facility, Ft. Detrick, Frederick, MD, United States of America
| | - Irwin Feuerstein
- NIAID Integrated Research Facility, Ft. Detrick, Frederick, MD, United States of America
| | - Louis Huzella
- NIAID Integrated Research Facility, Ft. Detrick, Frederick, MD, United States of America
| | - Peter B. Jahrling
- NIAID Integrated Research Facility, Ft. Detrick, Frederick, MD, United States of America
| | - Matthew Lackemeyer
- NIAID Integrated Research Facility, Ft. Detrick, Frederick, MD, United States of America
| | - Joseph Laux
- NIAID Integrated Research Facility, Ft. Detrick, Frederick, MD, United States of America
| | - Oscar Rojas
- NIAID Integrated Research Facility, Ft. Detrick, Frederick, MD, United States of America
| | - Philip Sayre
- NIAID Integrated Research Facility, Ft. Detrick, Frederick, MD, United States of America
| | - Jeffrey Solomon
- Clinical Monitoring Research Program Directorate, Frederick National Laboratory for Cancer Research sponsored by the National Cancer Institute, Ft. Detrick, Frederick, MD, United States of America
| | - Yu Cong
- NIAID Integrated Research Facility, Ft. Detrick, Frederick, MD, United States of America
| | - Vincent Munster
- Virus Ecology Unit, Laboratory of Virology, Rocky Mountain Laboratories, Hamilton, MT, United States of America
| | - Michael R. Holbrook
- NIAID Integrated Research Facility, Ft. Detrick, Frederick, MD, United States of America
- * E-mail:
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Jensen KS, Adams R, Bennett RS, Bernbaum J, Jahrling PB, Holbrook MR. Development of a novel real-time polymerase chain reaction assay for the quantitative detection of Nipah virus replicative viral RNA. PLoS One 2018; 13:e0199534. [PMID: 29920552 PMCID: PMC6007899 DOI: 10.1371/journal.pone.0199534] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2017] [Accepted: 06/08/2018] [Indexed: 11/17/2022] Open
Abstract
Nipah virus (NiV) is a highly pathogenic zoonotic paramyxovirus that can result in severe pulmonary disease and fatal encephalitis in humans and is responsible for outbreaks in Bangladesh, Malaysia, Singapore, India and possibly the Philippines. NiV has a negative-sense RNA genome that contains six genes and serves as a template for production of viral mRNA transcripts. NiV mRNA transcripts are subsequently translated into viral proteins. Traditionally, NiV quantitative real-time reverse transcriptase polymerase chain reaction (qRT-PCR) assays have relied on using primer sets that amplify a target (N that encodes the nucleocapsid) within the coding region of the viral gene that also amplifies viral mRNA. Here we describe a novel one-step qRT-PCR assay targeting the intergenic region separating the viral F and G proteins, thereby eliminating amplification of the viral mRNA. This assay is more accurate than the traditional qRT-PCR in quantifying concentrations of viral genomic RNA.
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Affiliation(s)
- Kenneth S. Jensen
- NIAID Integrated Research Facility, Ft. Detrick, Frederick, MD, United States of America
| | - Ricky Adams
- NIAID Integrated Research Facility, Ft. Detrick, Frederick, MD, United States of America
| | - Richard S. Bennett
- NIAID Integrated Research Facility, Ft. Detrick, Frederick, MD, United States of America
| | - John Bernbaum
- NIAID Integrated Research Facility, Ft. Detrick, Frederick, MD, United States of America
| | - Peter B. Jahrling
- NIAID Integrated Research Facility, Ft. Detrick, Frederick, MD, United States of America
| | - Michael R. Holbrook
- NIAID Integrated Research Facility, Ft. Detrick, Frederick, MD, United States of America
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