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Gardner CL, Erwin-Cohen RA, Lewis BS, Bakken RR, Honnold SP, Glass PJ, Burke CW. Syrian Hamsters Model Does Not Reflect Human-like Disease after Aerosol Exposure to Encephalitic Alphaviruses. Methods Protoc 2024; 7:42. [PMID: 38804336 PMCID: PMC11130913 DOI: 10.3390/mps7030042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2024] [Revised: 05/06/2024] [Accepted: 05/13/2024] [Indexed: 05/29/2024] Open
Abstract
Venezuelan (VEE), eastern (EEE), and western (WEE) equine encephalitis viruses are encephalitic New World alphaviruses that cause periodic epizootic and epidemic outbreaks in horses and humans that may cause severe morbidity and mortality. Currently there are no FDA-licensed vaccines or effective antiviral therapies. Each year, there are a limited number of human cases of encephalitic alphaviruses; thus, licensure of a vaccine or therapeutic would require approval under the FDA animal rule. Approval under the FDA animal rule requires the disease observed in the animal model to recapitulate what is observed in humans. Currently, initial testing of vaccines and therapeutics is performed in the mouse model. Unfortunately, alphavirus disease manifestations in a mouse do not faithfully recapitulate human disease; the VEEV mouse model is lethal whereas in humans VEEV is rarely lethal. In an effort to identify a more appropriate small animal model, we evaluated hamsters in an aerosol exposure model of encephalitic alphavirus infection. The pathology, lethality, and viremia observed in the infected hamsters was inconsistent with what is observed in NHP models and humans. These data suggest that hamsters are not an appropriate model for encephalitic alphaviruses to test vaccines or potential antiviral therapies.
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Affiliation(s)
- Christina L. Gardner
- Virology Division, U.S. Army Medical Research Institute of Infectious Diseases, Frederick, MD 21702, USA; (C.L.G.); (R.A.E.-C.); (R.R.B.); (P.J.G.)
| | - Rebecca A. Erwin-Cohen
- Virology Division, U.S. Army Medical Research Institute of Infectious Diseases, Frederick, MD 21702, USA; (C.L.G.); (R.A.E.-C.); (R.R.B.); (P.J.G.)
| | - Bridget S. Lewis
- Pathology Division, U.S. Army Medical Research Institute of Infectious Diseases, Frederick, MD 21702, USA; (B.S.L.); (S.P.H.)
| | - Russell R. Bakken
- Virology Division, U.S. Army Medical Research Institute of Infectious Diseases, Frederick, MD 21702, USA; (C.L.G.); (R.A.E.-C.); (R.R.B.); (P.J.G.)
| | - Shelley P. Honnold
- Pathology Division, U.S. Army Medical Research Institute of Infectious Diseases, Frederick, MD 21702, USA; (B.S.L.); (S.P.H.)
| | - Pamela J. Glass
- Virology Division, U.S. Army Medical Research Institute of Infectious Diseases, Frederick, MD 21702, USA; (C.L.G.); (R.A.E.-C.); (R.R.B.); (P.J.G.)
- Risk Management Office, U.S. Army Medical Research Institute of Infectious Diseases, Frederick, MD 21702, USA
| | - Crystal W. Burke
- Virology Division, U.S. Army Medical Research Institute of Infectious Diseases, Frederick, MD 21702, USA; (C.L.G.); (R.A.E.-C.); (R.R.B.); (P.J.G.)
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2
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Schwedler JL, Stefan MA, Thatcher CE, McIlroy PR, Sinha A, Phillips AM, Sumner CA, Courtney CM, Kim CY, Weilhammer DR, Harmon B. Therapeutic efficacy of a potent anti-Venezuelan equine encephalitis virus antibody is contingent on Fc effector function. MAbs 2024; 16:2297451. [PMID: 38170638 PMCID: PMC10766394 DOI: 10.1080/19420862.2023.2297451] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2023] [Accepted: 12/15/2023] [Indexed: 01/05/2024] Open
Abstract
The development of specific, safe, and potent monoclonal antibodies (Abs) has led to novel therapeutic options for infectious disease. In addition to preventing viral infection through neutralization, Abs can clear infected cells and induce immunomodulatory functions through engagement of their crystallizable fragment (Fc) with complement proteins and Fc receptors on immune cells. Little is known about the role of Fc effector functions of neutralizing Abs in the context of encephalitic alphavirus infection. To determine the role of Fc effector function in therapeutic efficacy against Venezuelan equine encephalitis virus (VEEV), we compared the potently neutralizing anti-VEEV human IgG F5 (hF5) Ab with intact Fc function (hF5-WT) or containing the loss of function Fc mutations L234A and L235A (hF5-LALA) in the context of VEEV infection. We observed significantly reduced binding to complement and Fc receptors, as well as differential in vitro kinetics of Fc-mediated cytotoxicity for hF5-LALA compared to hF5-WT. The in vivo efficacy of hF5-LALA was comparable to hF5-WT at -24 and + 24 h post infection, with both Abs providing high levels of protection. However, when hF5-WT and hF5-LALA were administered + 48 h post infection, there was a significant decrease in the therapeutic efficacy of hF5-LALA. Together these results demonstrate that optimal therapeutic Ab treatment of VEEV, and possibly other encephalitic alphaviruses, requires neutralization paired with engagement of immune effectors via the Fc region.
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Affiliation(s)
- Jennifer L. Schwedler
- Biotechnology and Bioengineering Department, Sandia National Laboratories, Livermore, CA, USA
| | - Maxwell A. Stefan
- Biotechnology and Bioengineering Department, Sandia National Laboratories, Livermore, CA, USA
| | - Christine E. Thatcher
- Biotechnology and Bioengineering Department, Sandia National Laboratories, Livermore, CA, USA
| | - Peter R. McIlroy
- Biotechnology and Bioengineering Department, Sandia National Laboratories, Livermore, CA, USA
| | - Anupama Sinha
- Biotechnology and Bioengineering Department, Sandia National Laboratories, Livermore, CA, USA
| | - Ashlee M. Phillips
- Biosciences and Biotechnology Division, Lawrence Livermore National Laboratory, Livermore, CA, USA
| | - Christopher A. Sumner
- Biotechnology and Bioengineering Department, Sandia National Laboratories, Livermore, CA, USA
| | - Colleen M. Courtney
- Biotechnology and Bioengineering Department, Sandia National Laboratories, Livermore, CA, USA
| | - Christina Y. Kim
- Biotechnology and Bioengineering Department, Sandia National Laboratories, Livermore, CA, USA
| | - Dina R. Weilhammer
- Biosciences and Biotechnology Division, Lawrence Livermore National Laboratory, Livermore, CA, USA
| | - Brooke Harmon
- Biotechnology and Bioengineering Department, Sandia National Laboratories, Livermore, CA, USA
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Guliy OI, Evstigneeva SS, Khanadeev VA, Dykman LA. Antibody Phage Display Technology for Sensor-Based Virus Detection: Current Status and Future Prospects. BIOSENSORS 2023; 13:640. [PMID: 37367005 DOI: 10.3390/bios13060640] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/26/2023] [Revised: 05/31/2023] [Accepted: 06/08/2023] [Indexed: 06/28/2023]
Abstract
Viruses are widespread in the environment, and many of them are major pathogens of serious plant, animal, and human diseases. The risk of pathogenicity, together with the capacity for constant mutation, emphasizes the need for measures to rapidly detect viruses. The need for highly sensitive bioanalytical methods to diagnose and monitor socially significant viral diseases has increased in the past few years. This is due, on the one hand, to the increased incidence of viral diseases in general (including the unprecedented spread of a new coronavirus infection, SARS-CoV-2), and, on the other hand, to the need to overcome the limitations of modern biomedical diagnostic methods. Phage display technology antibodies as nano-bio-engineered macromolecules can be used for sensor-based virus detection. This review analyzes the commonly used virus detection methods and approaches and shows the prospects for the use of antibodies prepared by phage display technology as sensing elements for sensor-based virus detection.
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Affiliation(s)
- Olga I Guliy
- Institute of Biochemistry and Physiology of Plants and Microorganisms, Subdivision of the Federal State Budgetary Research Institution Saratov Federal Scientific Centre of the Russian Academy of Sciences (IBPPM RAS), 13 Prospect Entuziastov, Saratov 410049, Russia
| | - Stella S Evstigneeva
- Institute of Biochemistry and Physiology of Plants and Microorganisms, Subdivision of the Federal State Budgetary Research Institution Saratov Federal Scientific Centre of the Russian Academy of Sciences (IBPPM RAS), 13 Prospect Entuziastov, Saratov 410049, Russia
| | - Vitaly A Khanadeev
- Institute of Biochemistry and Physiology of Plants and Microorganisms, Subdivision of the Federal State Budgetary Research Institution Saratov Federal Scientific Centre of the Russian Academy of Sciences (IBPPM RAS), 13 Prospect Entuziastov, Saratov 410049, Russia
| | - Lev A Dykman
- Institute of Biochemistry and Physiology of Plants and Microorganisms, Subdivision of the Federal State Budgetary Research Institution Saratov Federal Scientific Centre of the Russian Academy of Sciences (IBPPM RAS), 13 Prospect Entuziastov, Saratov 410049, Russia
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4
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Sutton MS, Pletnev S, Callahan V, Ko S, Tsybovsky Y, Bylund T, Casner RG, Cerutti G, Gardner CL, Guirguis V, Verardi R, Zhang B, Ambrozak D, Beddall M, Lei H, Yang ES, Liu T, Henry AR, Rawi R, Schön A, Schramm CA, Shen CH, Shi W, Stephens T, Yang Y, Florez MB, Ledgerwood JE, Burke CW, Shapiro L, Fox JM, Kwong PD, Roederer M. Vaccine elicitation and structural basis for antibody protection against alphaviruses. Cell 2023; 186:2672-2689.e25. [PMID: 37295404 PMCID: PMC10411218 DOI: 10.1016/j.cell.2023.05.019] [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: 09/28/2022] [Revised: 03/03/2023] [Accepted: 05/12/2023] [Indexed: 06/12/2023]
Abstract
Alphaviruses are RNA viruses that represent emerging public health threats. To identify protective antibodies, we immunized macaques with a mixture of western, eastern, and Venezuelan equine encephalitis virus-like particles (VLPs), a regimen that protects against aerosol challenge with all three viruses. Single- and triple-virus-specific antibodies were isolated, and we identified 21 unique binding groups. Cryo-EM structures revealed that broad VLP binding inversely correlated with sequence and conformational variability. One triple-specific antibody, SKT05, bound proximal to the fusion peptide and neutralized all three Env-pseudotyped encephalitic alphaviruses by using different symmetry elements for recognition across VLPs. Neutralization in other assays (e.g., chimeric Sindbis virus) yielded variable results. SKT05 bound backbone atoms of sequence-diverse residues, enabling broad recognition despite sequence variability; accordingly, SKT05 protected mice against Venezuelan equine encephalitis virus, chikungunya virus, and Ross River virus challenges. Thus, a single vaccine-elicited antibody can protect in vivo against a broad range of alphaviruses.
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Affiliation(s)
- Matthew S Sutton
- Vaccine Research Center, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892, USA
| | - Sergei Pletnev
- Vaccine Research Center, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892, USA
| | - Victoria Callahan
- Laboratory of Viral Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892, USA
| | - Sungyoul Ko
- Vaccine Research Center, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892, USA
| | - Yaroslav Tsybovsky
- Vaccine Research Center Electron Microscopy Unit, Cancer Research Technology Program, Leidos Biomedical Research, Inc., Frederick National Laboratory for Cancer Research, Frederick, MD 21702, USA
| | - Tatsiana Bylund
- Vaccine Research Center, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892, USA
| | - Ryan G Casner
- Zuckerman Mind Brain Behavior Institute, Columbia University, New York, NY 10027, USA; Department of Biochemistry and Molecular Biophysics, Columbia University Vagelos College of Physicians and Surgeons, New York, NY 10032, USA
| | - Gabriele Cerutti
- Zuckerman Mind Brain Behavior Institute, Columbia University, New York, NY 10027, USA; Department of Biochemistry and Molecular Biophysics, Columbia University Vagelos College of Physicians and Surgeons, New York, NY 10032, USA
| | - Christina L Gardner
- Virology Division, United States Army Medical Research Institute of Infectious Diseases (USAMRIID), Fort Detrick, Frederick, MD 21702, USA
| | - Veronica Guirguis
- Laboratory of Viral Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892, USA
| | - Raffaello Verardi
- Vaccine Research Center, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892, USA
| | - Baoshan Zhang
- Vaccine Research Center, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892, USA
| | - David Ambrozak
- Vaccine Research Center, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892, USA
| | - Margaret Beddall
- Vaccine Research Center, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892, USA
| | - Hong Lei
- Vaccine Research Center, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892, USA
| | - Eun Sung Yang
- Vaccine Research Center, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892, USA
| | - Tracy Liu
- Vaccine Research Center, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892, USA
| | - Amy R Henry
- Vaccine Research Center, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892, USA
| | - Reda Rawi
- Vaccine Research Center, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892, USA
| | - Arne Schön
- Department of Biology, Johns Hopkins University, Baltimore, MD 21218, USA
| | - Chaim A Schramm
- Vaccine Research Center, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892, USA
| | - Chen-Hsiang Shen
- Vaccine Research Center, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892, USA
| | - Wei Shi
- Vaccine Research Center, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892, USA
| | - Tyler Stephens
- Vaccine Research Center Electron Microscopy Unit, Cancer Research Technology Program, Leidos Biomedical Research, Inc., Frederick National Laboratory for Cancer Research, Frederick, MD 21702, USA
| | - Yongping Yang
- Vaccine Research Center, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892, USA
| | - Maria Burgos Florez
- Vaccine Research Center, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892, USA
| | - Julie E Ledgerwood
- Vaccine Research Center, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892, USA
| | - Crystal W Burke
- Virology Division, United States Army Medical Research Institute of Infectious Diseases (USAMRIID), Fort Detrick, Frederick, MD 21702, USA
| | - Lawrence Shapiro
- Zuckerman Mind Brain Behavior Institute, Columbia University, New York, NY 10027, USA; Department of Biochemistry and Molecular Biophysics, Columbia University Vagelos College of Physicians and Surgeons, New York, NY 10032, USA; Aaron Diamond AIDS Research Center, Columbia University Vagelos College of Physicians and Surgeons, New York, NY 10032, USA
| | - Julie M Fox
- Laboratory of Viral Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892, USA
| | - Peter D Kwong
- Vaccine Research Center, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892, USA; Department of Biochemistry and Molecular Biophysics, Columbia University Vagelos College of Physicians and Surgeons, New York, NY 10032, USA.
| | - Mario Roederer
- Vaccine Research Center, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892, USA.
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5
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Phelps AL, O’Brien LM, Ulaeto DO, Holtsberg FW, Liao GC, Douglas R, Aman MJ, Glass PJ, Moyer CL, Ennis J, Zeitlin L, Nagata LP, Hu WG. Cross-Strain Neutralizing and Protective Monoclonal Antibodies against EEEV or WEEV. Viruses 2021; 13:2231. [PMID: 34835037 PMCID: PMC8621548 DOI: 10.3390/v13112231] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2021] [Revised: 10/28/2021] [Accepted: 11/01/2021] [Indexed: 11/17/2022] Open
Abstract
The three encephalitic alphaviruses, namely, the Venezuelan, eastern, and western equine encephalitis viruses (VEEV, EEEV, and WEEV), are classified by the Centers for Disease Control and Prevention (CDC) as biothreat agents. Currently, no licensed medical countermeasures (MCMs) against these viruses are available for humans. Neutralizing antibodies (NAbs) are fast-acting and highly effective MCMs for use in both pre- and post-exposure settings against biothreat agents. While significant work has been done to identify anti-VEEV NAbs, less has been done to identify NAbs against EEEV and WEEV. In order to develop anti-EEEV or -WEEV NAbs, mice were immunized using complementary strategies with a variety of different EEEV or WEEV immunogens to maximize the generation of NAbs to each of these viruses. Of the hybridomas generated, three anti-EEEV and seven anti-WEEV monoclonal antibodies were identified with in vitro neutralization activity. The most potent neutralizers (two anti-EEEV NAbs and three anti-WEEV NAbs) were further evaluated for neutralization activity against additional strains of EEEV, a single strain of Madariaga virus (formerly South American EEEV), or WEEV. Of these, G1-2-H4 and G1-4-C3 neutralized all three EEEV strains and the Madariaga virus strain, whereas G8-2-H9 and 12 WA neutralized six out of eight WEEV strains. To determine the protective efficacy of these NAbs, the five most potent neutralizers were evaluated in respective mouse aerosol challenge models. All five NAbs demonstrated various levels of protection when administered at doses of 2.5 mg/kg or 10 mg/kg 24 h before the respective virus exposure via the aerosol route. Of these, anti-EEEV NAb G1-4-C3 and anti-WEEV NAb 8C2 provided 100% protection at both doses and all surviving mice were free of clinical signs throughout the study. Additionally, no virus was detected in the brain 14 days post virus exposure. Taken together, efficacious NAbs were developed that demonstrate the potential for the development of cross-strain antibody-based MCMs against EEEV and WEEV infections.
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MESH Headings
- Animals
- Antibodies, Monoclonal/administration & dosage
- Antibodies, Monoclonal/immunology
- Antibodies, Neutralizing/administration & dosage
- Antibodies, Neutralizing/immunology
- Antibodies, Viral/administration & dosage
- Antibodies, Viral/immunology
- Cross Protection
- Disease Models, Animal
- Encephalitis Virus, Eastern Equine/immunology
- Encephalitis Virus, Western Equine/immunology
- Encephalomyelitis, Equine/prevention & control
- Immunization
- Mice
- Neutralization Tests
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Affiliation(s)
- Amanda L. Phelps
- Defence Science and Technology Laboratory, Porton Down, Salisbury SP4 0JQ, UK; (A.L.P.); (L.M.O.); (D.O.U.)
| | - Lyn M. O’Brien
- Defence Science and Technology Laboratory, Porton Down, Salisbury SP4 0JQ, UK; (A.L.P.); (L.M.O.); (D.O.U.)
| | - David O. Ulaeto
- Defence Science and Technology Laboratory, Porton Down, Salisbury SP4 0JQ, UK; (A.L.P.); (L.M.O.); (D.O.U.)
| | - Frederick W. Holtsberg
- Integrated BioTherapeutics, Inc., Rockville, MD 20850, USA; (F.W.H.); (G.C.L.); (R.D.); (M.J.A.)
| | - Grant C. Liao
- Integrated BioTherapeutics, Inc., Rockville, MD 20850, USA; (F.W.H.); (G.C.L.); (R.D.); (M.J.A.)
| | - Robin Douglas
- Integrated BioTherapeutics, Inc., Rockville, MD 20850, USA; (F.W.H.); (G.C.L.); (R.D.); (M.J.A.)
| | - M. Javad Aman
- Integrated BioTherapeutics, Inc., Rockville, MD 20850, USA; (F.W.H.); (G.C.L.); (R.D.); (M.J.A.)
| | - Pamela J. Glass
- US Army Medical Research Institute of Infectious Diseases, Frederick, MD 21702, USA;
| | - Crystal L. Moyer
- Mapp Biopharmaceutical, Inc., San Diego, CA 92121, USA; (C.L.M.); (J.E.); (L.Z.)
| | - Jane Ennis
- Mapp Biopharmaceutical, Inc., San Diego, CA 92121, USA; (C.L.M.); (J.E.); (L.Z.)
| | - Larry Zeitlin
- Mapp Biopharmaceutical, Inc., San Diego, CA 92121, USA; (C.L.M.); (J.E.); (L.Z.)
| | - Les P. Nagata
- Defence Research and Development Canada, Suffield Research Centre, Medicine Hat, AB T1A 8K6, Canada;
| | - Wei-Gang Hu
- Defence Research and Development Canada, Suffield Research Centre, Medicine Hat, AB T1A 8K6, Canada;
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6
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Calvert AE, Bennett SL, Hunt AR, Fong RH, Doranz BJ, Roehrig JT, Blair CD. Exposing cryptic epitopes on the Venezuelan equine encephalitis virus E1 glycoprotein prior to treatment with alphavirus cross-reactive monoclonal antibody allows blockage of replication early in infection. Virology 2021; 565:13-21. [PMID: 34626907 PMCID: PMC8765347 DOI: 10.1016/j.virol.2021.09.007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2021] [Revised: 09/20/2021] [Accepted: 09/24/2021] [Indexed: 01/17/2023]
Abstract
Eastern equine encephalitis virus (EEEV), western equine encephalitis virus (WEEV) and Venezuelan equine encephalitis virus (VEEV) can cause fatal encephalitis in humans and equids. Some MAbs to the E1 glycoprotein are known to be cross-reactive, weakly neutralizing in vitro but can protect from disease in animal models. We investigated the mechanism of neutralization of VEEV infection by the broadly cross-reactive E1-specific MAb 1A4B-6. 1A4B-6 protected 3-week-old Swiss Webster mice prophylactically from lethal VEEV challenge. Likewise, 1A4B-6 inhibited virus growth in vitro at a pre-attachment step after virions were incubated at 37 °C and inhibited virus-mediated cell fusion. Amino acid residue N100 in the fusion loop of E1 protein was identified as critical for binding. The potential to elicit broadly cross-reactive MAbs with limited virus neutralizing activity in vitro but that can inhibit virus entry and protect animals from infection merits further exploration for vaccine and therapeutic developmental research.
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Affiliation(s)
- Amanda E Calvert
- Arboviral Diseases Branch, Division of Vector-Borne Diseases, Centers for Disease Control and Prevention, Fort Collins, CO 80521, USA.
| | - Susan L Bennett
- Center for Vector-borne Infectious Diseases, Department of Microbiology, Immunology and Pathology, Colorado State University, Fort Collins, CO 80523, USA
| | - Ann R Hunt
- Center for Vector-borne Infectious Diseases, Department of Microbiology, Immunology and Pathology, Colorado State University, Fort Collins, CO 80523, USA
| | | | | | - John T Roehrig
- Center for Vector-borne Infectious Diseases, Department of Microbiology, Immunology and Pathology, Colorado State University, Fort Collins, CO 80523, USA
| | - Carol D Blair
- Center for Vector-borne Infectious Diseases, Department of Microbiology, Immunology and Pathology, Colorado State University, Fort Collins, CO 80523, USA
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7
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Guerrero-Arguero I, Tellez-Freitas CM, Weber KS, Berges BK, Robison RA, Pickett BE. Alphaviruses: Host pathogenesis, immune response, and vaccine & treatment updates. J Gen Virol 2021; 102. [PMID: 34435944 DOI: 10.1099/jgv.0.001644] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Abstract
Human pathogens belonging to the Alphavirus genus, in the Togaviridae family, are transmitted primarily by mosquitoes. The signs and symptoms associated with these viruses include fever and polyarthralgia, defined as joint pain and inflammation, as well as encephalitis. In the last decade, our understanding of the interactions between members of the alphavirus genus and the human host has increased due to the re-appearance of the chikungunya virus (CHIKV) in Asia and Europe, as well as its emergence in the Americas. Alphaviruses affect host immunity through cytokines and the interferon response. Understanding alphavirus interactions with both the innate immune system as well as the various cells in the adaptive immune systems is critical to developing effective therapeutics. In this review, we summarize the latest research on alphavirus-host cell interactions, underlying infection mechanisms, and possible treatments.
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Affiliation(s)
- Israel Guerrero-Arguero
- Department of Microbiology and Molecular Biology, Brigham Young University, Provo, UT, USA.,Texas Biomedical Research Institute, San Antonio, TX, USA
| | | | - K Scott Weber
- Department of Microbiology and Molecular Biology, Brigham Young University, Provo, UT, USA
| | - Bradford K Berges
- Department of Microbiology and Molecular Biology, Brigham Young University, Provo, UT, USA
| | - Richard A Robison
- Department of Microbiology and Molecular Biology, Brigham Young University, Provo, UT, USA
| | - Brett E Pickett
- Department of Microbiology and Molecular Biology, Brigham Young University, Provo, UT, USA
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8
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Barraza SJ, Sindac JA, Dobry CJ, Delekta PC, Lee PH, Miller DJ, Larsen SD. Synthesis and biological activity of conformationally restricted indole-based inhibitors of neurotropic alphavirus replication: Generation of a three-dimensional pharmacophore. Bioorg Med Chem Lett 2021; 46:128171. [PMID: 34098081 PMCID: PMC8272561 DOI: 10.1016/j.bmcl.2021.128171] [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: 02/15/2021] [Revised: 05/26/2021] [Accepted: 05/30/2021] [Indexed: 11/29/2022]
Abstract
We have previously reported the development of indole-based CNS-active antivirals for the treatment of neurotropic alphavirus infection, but further optimization is impeded by a lack of knowledge of the molecular target and binding site. Herein we describe the design, synthesis and evaluation of a series of conformationally restricted analogues with the dual objectives of improving potency/selectivity and identifying the most bioactive conformation. Although this campaign was only modestly successful at improving potency, the sharply defined SAR of the rigid analogs enabled the definition of a three-dimensional pharmacophore, which we believe will be of value in further analog design and virtual screening for alternative antiviral leads.
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Affiliation(s)
- Scott J Barraza
- Department of Medicinal Chemistry, College of Pharmacy, University of Michigan, Ann Arbor, MI 48109, United States
| | - Janice A Sindac
- Department of Medicinal Chemistry, College of Pharmacy, University of Michigan, Ann Arbor, MI 48109, United States
| | - Craig J Dobry
- Departments of Internal Medicine and Microbiology and Immunology, University of Michigan, Ann Arbor, MI 48109, United States
| | - Philip C Delekta
- Departments of Internal Medicine and Microbiology and Immunology, University of Michigan, Ann Arbor, MI 48109, United States
| | - Pil H Lee
- Vahlteich Medicinal Chemistry Core, University of Michigan, Ann Arbor, MI 48109, United States; Department of Medicinal Chemistry, College of Pharmacy, University of Michigan, Ann Arbor, MI 48109, United States
| | - David J Miller
- Departments of Internal Medicine and Microbiology and Immunology, University of Michigan, Ann Arbor, MI 48109, United States
| | - Scott D Larsen
- Vahlteich Medicinal Chemistry Core, University of Michigan, Ann Arbor, MI 48109, United States; Department of Medicinal Chemistry, College of Pharmacy, University of Michigan, Ann Arbor, MI 48109, United States.
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9
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Hasan SS, Dey D, Singh S, Martin M. The Structural Biology of Eastern Equine Encephalitis Virus, an Emerging Viral Threat. Pathogens 2021; 10:pathogens10080973. [PMID: 34451437 PMCID: PMC8400090 DOI: 10.3390/pathogens10080973] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2021] [Revised: 07/21/2021] [Accepted: 07/28/2021] [Indexed: 11/16/2022] Open
Abstract
Alphaviruses are arboviruses that cause arthritis and encephalitis in humans. Eastern Equine Encephalitis Virus (EEEV) is a mosquito-transmitted alphavirus that is implicated in severe encephalitis in humans with high mortality. However, limited insights are available into the fundamental biology of EEEV and residue-level details of its interactions with host proteins. In recent years, outbreaks of EEEV have been reported mainly in the United States, raising concerns about public safety. This review article summarizes recent advances in the structural biology of EEEV based mainly on single-particle cryogenic electron microscopy (cryoEM) structures. Together with functional analyses of EEEV and related alphaviruses, these structural investigations provide clues to how EEEV interacts with host proteins, which may open avenues for the development of therapeutics.
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Affiliation(s)
- S. Saif Hasan
- Department of Biochemistry and Molecular Biology, University of Maryland School of Medicine, 108 N. Greene Street, Baltimore, MD 21201, USA; (D.D.); (S.S.); (M.M.)
- Center for Biomolecular Therapeutics, University of Maryland School of Medicine, 9600 Gudelsky Drive, Rockville, MD 20850, USA
- University of Maryland Marlene and Stewart Greenebaum Cancer Center, University of Maryland Medical Center, 22. S. Greene St., Baltimore, MD 21201, USA
- Correspondence:
| | - Debajit Dey
- Department of Biochemistry and Molecular Biology, University of Maryland School of Medicine, 108 N. Greene Street, Baltimore, MD 21201, USA; (D.D.); (S.S.); (M.M.)
| | - Suruchi Singh
- Department of Biochemistry and Molecular Biology, University of Maryland School of Medicine, 108 N. Greene Street, Baltimore, MD 21201, USA; (D.D.); (S.S.); (M.M.)
| | - Matthew Martin
- Department of Biochemistry and Molecular Biology, University of Maryland School of Medicine, 108 N. Greene Street, Baltimore, MD 21201, USA; (D.D.); (S.S.); (M.M.)
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10
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Ma J, Wang H, Zheng X, Wu H, Yang S, Xia X. Western equine encephalitis virus virus-like particles from an insect cell-baculovirus system elicit the strong immune responses in mice. Biotechnol J 2021; 16:e2100008. [PMID: 34176228 DOI: 10.1002/biot.202100008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2021] [Revised: 06/18/2021] [Accepted: 06/21/2021] [Indexed: 11/07/2022]
Abstract
Western equine encephalitis virus (WEEV) causes lethal encephalitis in humans and equines, and it poses a serious public health threat in many countries. Therefore, the development of an efficient vaccine remains an important challenge for the prevention of WEEV infection. This study presents the first description of WEEV virus-like particles (VLPs) generated from insect cells using recombinant baculoviruses. WEEV VLPs with 206 adjuvant could trigger a strong cellular immune response; increase the levels of IL-2, IL-4 and IFN-γ; and induce a high level of neutralizing antibodies against WEEV in mice. These data showed that the insect cell-baculovirus system is suitable for the production of WEEV VLPs and that these VLPs could elicit the strong immunogenicity in mice. These results suggest a new, nonreplicating, and effective vaccine candidate against WEEV infection.
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Affiliation(s)
- JinZhu Ma
- Key Laboratory of Jilin Province for Zoonosis Prevention and Control, Changchun Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Changchun, Jilin, China.,College of Life Science and Biotechnology, Heilongjiang Bayi Agricultural University, Daqing, Heilongjiang, China
| | - HuaLei Wang
- Key Laboratory of Jilin Province for Zoonosis Prevention and Control, Changchun Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Changchun, Jilin, China
| | - XueXing Zheng
- Key Laboratory of Jilin Province for Zoonosis Prevention and Control, Changchun Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Changchun, Jilin, China
| | - HongXia Wu
- Key Laboratory of Jilin Province for Zoonosis Prevention and Control, Changchun Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Changchun, Jilin, China
| | - SongTao Yang
- Key Laboratory of Jilin Province for Zoonosis Prevention and Control, Changchun Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Changchun, Jilin, China
| | - XianZhu Xia
- Key Laboratory of Jilin Province for Zoonosis Prevention and Control, Changchun Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Changchun, Jilin, China
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11
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Roth KDR, Wenzel EV, Ruschig M, Steinke S, Langreder N, Heine PA, Schneider KT, Ballmann R, Fühner V, Kuhn P, Schirrmann T, Frenzel A, Dübel S, Schubert M, Moreira GMSG, Bertoglio F, Russo G, Hust M. Developing Recombinant Antibodies by Phage Display Against Infectious Diseases and Toxins for Diagnostics and Therapy. Front Cell Infect Microbiol 2021; 11:697876. [PMID: 34307196 PMCID: PMC8294040 DOI: 10.3389/fcimb.2021.697876] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2021] [Accepted: 06/21/2021] [Indexed: 12/30/2022] Open
Abstract
Antibodies are essential molecules for diagnosis and treatment of diseases caused by pathogens and their toxins. Antibodies were integrated in our medical repertoire against infectious diseases more than hundred years ago by using animal sera to treat tetanus and diphtheria. In these days, most developed therapeutic antibodies target cancer or autoimmune diseases. The COVID-19 pandemic was a reminder about the importance of antibodies for therapy against infectious diseases. While monoclonal antibodies could be generated by hybridoma technology since the 70ies of the former century, nowadays antibody phage display, among other display technologies, is robustly established to discover new human monoclonal antibodies. Phage display is an in vitro technology which confers the potential for generating antibodies from universal libraries against any conceivable molecule of sufficient size and omits the limitations of the immune systems. If convalescent patients or immunized/infected animals are available, it is possible to construct immune phage display libraries to select in vivo affinity-matured antibodies. A further advantage is the availability of the DNA sequence encoding the phage displayed antibody fragment, which is packaged in the phage particles. Therefore, the selected antibody fragments can be rapidly further engineered in any needed antibody format according to the requirements of the final application. In this review, we present an overview of phage display derived recombinant antibodies against bacterial, viral and eukaryotic pathogens, as well as microbial toxins, intended for diagnostic and therapeutic applications.
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Affiliation(s)
- Kristian Daniel Ralph Roth
- Institut für Biochemie, Biotechnologie und Bioinformatik, Abteilung Biotechnologie, Technische Universität Braunschweig, Braunschweig, Germany
| | - Esther Veronika Wenzel
- Institut für Biochemie, Biotechnologie und Bioinformatik, Abteilung Biotechnologie, Technische Universität Braunschweig, Braunschweig, Germany.,Abcalis GmbH, Braunschweig, Germany
| | - Maximilian Ruschig
- Institut für Biochemie, Biotechnologie und Bioinformatik, Abteilung Biotechnologie, Technische Universität Braunschweig, Braunschweig, Germany
| | - Stephan Steinke
- Institut für Biochemie, Biotechnologie und Bioinformatik, Abteilung Biotechnologie, Technische Universität Braunschweig, Braunschweig, Germany
| | - Nora Langreder
- Institut für Biochemie, Biotechnologie und Bioinformatik, Abteilung Biotechnologie, Technische Universität Braunschweig, Braunschweig, Germany
| | - Philip Alexander Heine
- Institut für Biochemie, Biotechnologie und Bioinformatik, Abteilung Biotechnologie, Technische Universität Braunschweig, Braunschweig, Germany
| | - Kai-Thomas Schneider
- Institut für Biochemie, Biotechnologie und Bioinformatik, Abteilung Biotechnologie, Technische Universität Braunschweig, Braunschweig, Germany
| | - Rico Ballmann
- Institut für Biochemie, Biotechnologie und Bioinformatik, Abteilung Biotechnologie, Technische Universität Braunschweig, Braunschweig, Germany
| | - Viola Fühner
- Institut für Biochemie, Biotechnologie und Bioinformatik, Abteilung Biotechnologie, Technische Universität Braunschweig, Braunschweig, Germany
| | | | | | | | - Stefan Dübel
- Institut für Biochemie, Biotechnologie und Bioinformatik, Abteilung Biotechnologie, Technische Universität Braunschweig, Braunschweig, Germany.,Abcalis GmbH, Braunschweig, Germany.,YUMAB GmbH, Braunschweig, Germany
| | - Maren Schubert
- Institut für Biochemie, Biotechnologie und Bioinformatik, Abteilung Biotechnologie, Technische Universität Braunschweig, Braunschweig, Germany
| | | | - Federico Bertoglio
- Institut für Biochemie, Biotechnologie und Bioinformatik, Abteilung Biotechnologie, Technische Universität Braunschweig, Braunschweig, Germany
| | - Giulio Russo
- Institut für Biochemie, Biotechnologie und Bioinformatik, Abteilung Biotechnologie, Technische Universität Braunschweig, Braunschweig, Germany.,Abcalis GmbH, Braunschweig, Germany
| | - Michael Hust
- Institut für Biochemie, Biotechnologie und Bioinformatik, Abteilung Biotechnologie, Technische Universität Braunschweig, Braunschweig, Germany.,YUMAB GmbH, Braunschweig, Germany
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12
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Keeler SP, Fox JM. Requirement of Fc-Fc Gamma Receptor Interaction for Antibody-Based Protection against Emerging Virus Infections. Viruses 2021; 13:v13061037. [PMID: 34072720 PMCID: PMC8226613 DOI: 10.3390/v13061037] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2021] [Revised: 05/27/2021] [Accepted: 05/28/2021] [Indexed: 12/13/2022] Open
Abstract
Identification of therapeutics against emerging and re-emerging viruses remains a continued priority that is only reinforced by the recent SARS-CoV-2 pandemic. Advances in monoclonal antibody (mAb) isolation, characterization, and production make it a viable option for rapid treatment development. While mAbs are traditionally screened and selected based on potency of neutralization in vitro, it is clear that additional factors contribute to the in vivo efficacy of a mAb beyond viral neutralization. These factors include interactions with Fc receptors (FcRs) and complement that can enhance neutralization, clearance of infected cells, opsonization of virions, and modulation of the innate and adaptive immune response. In this review, we discuss recent studies, primarily using mouse models, that identified a role for Fc-FcγR interactions for optimal antibody-based protection against emerging and re-emerging virus infections.
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Affiliation(s)
- Shamus P. Keeler
- Division of Pulmonary and Critical Care Medicine, Washington University School of Medicine, St. Louis, MO 63110, USA;
| | - Julie M. Fox
- Laboratory of Viral Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892, USA
- Correspondence:
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13
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Bertoglio F, Meier D, Langreder N, Steinke S, Rand U, Simonelli L, Heine PA, Ballmann R, Schneider KT, Roth KDR, Ruschig M, Riese P, Eschke K, Kim Y, Schäckermann D, Pedotti M, Kuhn P, Zock-Emmenthal S, Wöhrle J, Kilb N, Herz T, Becker M, Grasshoff M, Wenzel EV, Russo G, Kröger A, Brunotte L, Ludwig S, Fühner V, Krämer SD, Dübel S, Varani L, Roth G, Čičin-Šain L, Schubert M, Hust M. SARS-CoV-2 neutralizing human recombinant antibodies selected from pre-pandemic healthy donors binding at RBD-ACE2 interface. Nat Commun 2021; 12:1577. [PMID: 33707427 PMCID: PMC7952403 DOI: 10.1038/s41467-021-21609-2] [Citation(s) in RCA: 62] [Impact Index Per Article: 20.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2020] [Accepted: 01/28/2021] [Indexed: 12/20/2022] Open
Abstract
COVID-19 is a severe acute respiratory disease caused by SARS-CoV-2, a new recently emerged sarbecovirus. This virus uses the human ACE2 enzyme as receptor for cell entry, recognizing it with the receptor binding domain (RBD) of the S1 subunit of the viral spike protein. We present the use of phage display to select anti-SARS-CoV-2 spike antibodies from the human naïve antibody gene libraries HAL9/10 and subsequent identification of 309 unique fully human antibodies against S1. 17 antibodies are binding to the RBD, showing inhibition of spike binding to cells expressing ACE2 as scFv-Fc and neutralize active SARS-CoV-2 virus infection of VeroE6 cells. The antibody STE73-2E9 is showing neutralization of active SARS-CoV-2 as IgG and is binding to the ACE2-RBD interface. Thus, universal libraries from healthy human donors offer the advantage that antibodies can be generated quickly and independent from the availability of material from recovering patients in a pandemic situation.
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Affiliation(s)
- Federico Bertoglio
- Technische Universität Braunschweig, Institut für Biochemie, Biotechnologie und Bioinformatik, Abteilung Biotechnologie, Braunschweig, Germany
| | - Doris Meier
- Technische Universität Braunschweig, Institut für Biochemie, Biotechnologie und Bioinformatik, Abteilung Biotechnologie, Braunschweig, Germany
| | - Nora Langreder
- Technische Universität Braunschweig, Institut für Biochemie, Biotechnologie und Bioinformatik, Abteilung Biotechnologie, Braunschweig, Germany
| | - Stephan Steinke
- Technische Universität Braunschweig, Institut für Biochemie, Biotechnologie und Bioinformatik, Abteilung Biotechnologie, Braunschweig, Germany
| | - Ulfert Rand
- Department of Vaccinology and Applied Microbiology, Helmholtz Centre for Infection Research, Braunschweig, Germany
| | - Luca Simonelli
- Institute for Research in Biomedicine (IRB), Università della Svizzera italiana (USI), Bellinzona, Switzerland
| | - Philip Alexander Heine
- Technische Universität Braunschweig, Institut für Biochemie, Biotechnologie und Bioinformatik, Abteilung Biotechnologie, Braunschweig, Germany
| | - Rico Ballmann
- Technische Universität Braunschweig, Institut für Biochemie, Biotechnologie und Bioinformatik, Abteilung Biotechnologie, Braunschweig, Germany
| | - Kai-Thomas Schneider
- Technische Universität Braunschweig, Institut für Biochemie, Biotechnologie und Bioinformatik, Abteilung Biotechnologie, Braunschweig, Germany
| | - Kristian Daniel Ralph Roth
- Technische Universität Braunschweig, Institut für Biochemie, Biotechnologie und Bioinformatik, Abteilung Biotechnologie, Braunschweig, Germany
| | - Maximilian Ruschig
- Technische Universität Braunschweig, Institut für Biochemie, Biotechnologie und Bioinformatik, Abteilung Biotechnologie, Braunschweig, Germany
| | - Peggy Riese
- Technische Universität Braunschweig, Institut für Biochemie, Biotechnologie und Bioinformatik, Abteilung Biotechnologie, Braunschweig, Germany
- Department of Vaccinology and Applied Microbiology, Helmholtz Centre for Infection Research, Braunschweig, Germany
| | - Kathrin Eschke
- Department of Vaccinology and Applied Microbiology, Helmholtz Centre for Infection Research, Braunschweig, Germany
| | - Yeonsu Kim
- Department of Vaccinology and Applied Microbiology, Helmholtz Centre for Infection Research, Braunschweig, Germany
| | - Dorina Schäckermann
- Technische Universität Braunschweig, Institut für Biochemie, Biotechnologie und Bioinformatik, Abteilung Biotechnologie, Braunschweig, Germany
| | - Mattia Pedotti
- Institute for Research in Biomedicine (IRB), Università della Svizzera italiana (USI), Bellinzona, Switzerland
| | | | | | | | | | | | - Marlies Becker
- Technische Universität Braunschweig, Institut für Biochemie, Biotechnologie und Bioinformatik, Abteilung Biotechnologie, Braunschweig, Germany
| | - Martina Grasshoff
- Helmholtz Centre for Infection Research, Research Group Innate Immunity and Infection, Braunschweig, Germany
| | - Esther Veronika Wenzel
- Technische Universität Braunschweig, Institut für Biochemie, Biotechnologie und Bioinformatik, Abteilung Biotechnologie, Braunschweig, Germany
| | - Giulio Russo
- Technische Universität Braunschweig, Institut für Biochemie, Biotechnologie und Bioinformatik, Abteilung Biotechnologie, Braunschweig, Germany
| | - Andrea Kröger
- Helmholtz Centre for Infection Research, Research Group Innate Immunity and Infection, Braunschweig, Germany
| | - Linda Brunotte
- Westfälische Wilhelms-Universität Münster, Institut für Virologie (IVM), Münster, Germany
| | - Stephan Ludwig
- Westfälische Wilhelms-Universität Münster, Institut für Virologie (IVM), Münster, Germany
| | - Viola Fühner
- Technische Universität Braunschweig, Institut für Biochemie, Biotechnologie und Bioinformatik, Abteilung Biotechnologie, Braunschweig, Germany
| | | | - Stefan Dübel
- Technische Universität Braunschweig, Institut für Biochemie, Biotechnologie und Bioinformatik, Abteilung Biotechnologie, Braunschweig, Germany
| | - Luca Varani
- Institute for Research in Biomedicine (IRB), Università della Svizzera italiana (USI), Bellinzona, Switzerland.
| | | | - Luka Čičin-Šain
- Department of Vaccinology and Applied Microbiology, Helmholtz Centre for Infection Research, Braunschweig, Germany.
- Centre for Individualised Infection Medicine (CIIM), a joint venture of Helmholtz Centre for Infection Research and Medical School Hannover, Braunschweig, Germany.
| | - Maren Schubert
- Technische Universität Braunschweig, Institut für Biochemie, Biotechnologie und Bioinformatik, Abteilung Biotechnologie, Braunschweig, Germany.
| | - Michael Hust
- Technische Universität Braunschweig, Institut für Biochemie, Biotechnologie und Bioinformatik, Abteilung Biotechnologie, Braunschweig, Germany.
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14
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Dübel S, Herrmann A, Schirrmann T, Frenzel A, Hust M. COR-101, ein menschlicher Antikörper gegen COVID-19. BIOSPEKTRUM : ZEITSCHRIFT DER GESELLSCHAFT FUR BIOLOGISHE CHEMIE (GBCH) UND DER VEREINIGUNG FUR ALLGEMEINE UND ANGEWANDTE MIKROBIOLOGIE (VAAM) 2021; 27:46-48. [PMID: 33612989 PMCID: PMC7880633 DOI: 10.1007/s12268-021-1512-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
COR-101 is a fully human, Fc silenced IgG that was discovered by antibody phage display. It reduced the SARS-CoV-2 virus load in the lung by more than 99 percent in Hamster models and led to much faster recovery. Its mode of action has been elucidated by solving the atomic structure of its interaction with SARS-CoV-2. The antibody competes with ACE2 binding by blocking a large area of the SARS-CoV-2 spike protein.
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Affiliation(s)
- Stefan Dübel
- Abteilung Biotechnologie, Institut für Biochemie, Biotechnologie und Bioinformatik, Technische Universität Braunschweig, Spielmannstraße 7, D-38106 Braunschweig, Deutschland
| | | | - Thomas Schirrmann
- Corat Therapeutics Gmbh, Braunschweig, Deutschland
- Yumab GmbH, Braunschweig, Deutschland
| | - André Frenzel
- Corat Therapeutics Gmbh, Braunschweig, Deutschland
- Yumab GmbH, Braunschweig, Deutschland
| | - Michael Hust
- Abteilung Biotechnologie, Institut für Biochemie, Biotechnologie und Bioinformatik, Technische Universität Braunschweig, Spielmannstraße 7, D-38106 Braunschweig, Deutschland
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15
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Williamson LE, Gilliland T, Yadav PK, Binshtein E, Bombardi R, Kose N, Nargi RS, Sutton RE, Durie CL, Armstrong E, Carnahan RH, Walker LM, Kim AS, Fox JM, Diamond MS, Ohi MD, Klimstra WB, Crowe JE. Human Antibodies Protect against Aerosolized Eastern Equine Encephalitis Virus Infection. Cell 2020; 183:1884-1900.e23. [PMID: 33301709 DOI: 10.1016/j.cell.2020.11.011] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2020] [Revised: 09/23/2020] [Accepted: 11/06/2020] [Indexed: 12/19/2022]
Abstract
Eastern equine encephalitis virus (EEEV) is one of the most virulent viruses endemic to North America. No licensed vaccines or antiviral therapeutics are available to combat this infection, which has recently shown an increase in human cases. Here, we characterize human monoclonal antibodies (mAbs) isolated from a survivor of natural EEEV infection with potent (<20 pM) inhibitory activity of EEEV. Cryo-electron microscopy reconstructions of two highly neutralizing mAbs, EEEV-33 and EEEV-143, were solved in complex with chimeric Sindbis/EEEV virions to 7.2 Å and 8.3 Å, respectively. The mAbs recognize two distinct antigenic sites that are critical for inhibiting viral entry into cells. EEEV-33 and EEEV-143 protect against disease following stringent lethal aerosol challenge of mice with highly pathogenic EEEV. These studies provide insight into the molecular basis for the neutralizing human antibody response against EEEV and can facilitate development of vaccines and candidate antibody therapeutics.
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Affiliation(s)
- Lauren E Williamson
- Department of Pathology, Microbiology and Immunology, Vanderbilt University, Nashville, TN 37232, USA
| | - Theron Gilliland
- The Center for Vaccine Research, University of Pittsburgh, Pittsburgh, PA 165261, USA
| | - Pramod K Yadav
- Life Sciences Institute, University of Michigan, Ann Arbor, MI 48109, USA
| | - Elad Binshtein
- The Vanderbilt Vaccine Center, Vanderbilt University Medical Center, Nashville, TN 37232, USA
| | - Robin Bombardi
- The Vanderbilt Vaccine Center, Vanderbilt University Medical Center, Nashville, TN 37232, USA
| | - Nurgun Kose
- The Vanderbilt Vaccine Center, Vanderbilt University Medical Center, Nashville, TN 37232, USA
| | - Rachel S Nargi
- The Vanderbilt Vaccine Center, Vanderbilt University Medical Center, Nashville, TN 37232, USA
| | - Rachel E Sutton
- The Vanderbilt Vaccine Center, Vanderbilt University Medical Center, Nashville, TN 37232, USA
| | - Clarissa L Durie
- Life Sciences Institute, University of Michigan, Ann Arbor, MI 48109, USA
| | - Erica Armstrong
- The Vanderbilt Vaccine Center, Vanderbilt University Medical Center, Nashville, TN 37232, USA
| | - Robert H Carnahan
- The Vanderbilt Vaccine Center, Vanderbilt University Medical Center, Nashville, TN 37232, USA
| | - Lauren M Walker
- Department of Pathology, Microbiology and Immunology, Vanderbilt University, Nashville, TN 37232, USA
| | - Arthur S Kim
- Department of Medicine, Washington University, St. Louis, MO 63110, USA; Department of Pathology and Immunology, Washington University, St. Louis, MO 63110, USA
| | - Julie M Fox
- Department of Medicine, Washington University, St. Louis, MO 63110, USA
| | - Michael S Diamond
- Department of Medicine, Washington University, St. Louis, MO 63110, USA; Department of Pathology and Immunology, Washington University, St. Louis, MO 63110, USA; Department of Molecular Microbiology, Washington University, St. Louis, MO 63110, USA
| | - Melanie D Ohi
- Life Sciences Institute, University of Michigan, Ann Arbor, MI 48109, USA; Department of Cell and Developmental Biology, University of Michigan, Ann Arbor, MI 48109, USA
| | - William B Klimstra
- The Center for Vaccine Research, University of Pittsburgh, Pittsburgh, PA 165261, USA; Department of Immunology, University of Pittsburgh, Pittsburgh, PA 165261, USA
| | - James E Crowe
- Department of Pathology, Microbiology and Immunology, Vanderbilt University, Nashville, TN 37232, USA; The Vanderbilt Vaccine Center, Vanderbilt University Medical Center, Nashville, TN 37232, USA; Department of Pediatrics, Vanderbilt University Medical Center, Nashville, TN 37232, USA.
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16
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Lv H, Wu NC, Tsang OTY, Yuan M, Perera RAPM, Leung WS, So RTY, Chan JMC, Yip GK, Chik TSH, Wang Y, Choi CYC, Lin Y, Ng WW, Zhao J, Poon LLM, Peiris JSM, Wilson IA, Mok CKP. Cross-reactive Antibody Response between SARS-CoV-2 and SARS-CoV Infections. Cell Rep 2020; 31:107725. [PMID: 32426212 PMCID: PMC7231734 DOI: 10.1016/j.celrep.2020.107725] [Citation(s) in RCA: 298] [Impact Index Per Article: 74.5] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2020] [Revised: 04/21/2020] [Accepted: 05/13/2020] [Indexed: 12/23/2022] Open
Abstract
The World Health Organization has declared the ongoing outbreak of COVID-19, which is caused by a novel coronavirus SARS-CoV-2, a pandemic. There is currently a lack of knowledge about the antibody response elicited from SARS-CoV-2 infection. One major immunological question concerns antigenic differences between SARS-CoV-2 and SARS-CoV. We address this question by analyzing plasma from patients infected by SARS-CoV-2 or SARS-CoV and from infected or immunized mice. Our results show that, although cross-reactivity in antibody binding to the spike protein is common, cross-neutralization of the live viruses may be rare, indicating the presence of a non-neutralizing antibody response to conserved epitopes in the spike. Whether such low or non-neutralizing antibody response leads to antibody-dependent disease enhancement needs to be addressed in the future. Overall, this study not only addresses a fundamental question regarding antigenicity differences between SARS-CoV-2 and SARS-CoV but also has implications for immunogen design and vaccine development.
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Affiliation(s)
- Huibin Lv
- HKU-Pasteur Research Pole, School of Public Health, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong SAR, China
| | - Nicholas C Wu
- Department of Integrative Structural and Computational Biology, The Scripps Research Institute, La Jolla, CA 92037, USA
| | - Owen Tak-Yin Tsang
- Infectious Diseases Centre, Princess Margaret Hospital, Hospital Authority of Hong Kong, Hong Kong SAR, China
| | - Meng Yuan
- Department of Integrative Structural and Computational Biology, The Scripps Research Institute, La Jolla, CA 92037, USA
| | - Ranawaka A P M Perera
- School of Public Health, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong SAR, China
| | - Wai Shing Leung
- Infectious Diseases Centre, Princess Margaret Hospital, Hospital Authority of Hong Kong, Hong Kong SAR, China
| | - Ray T Y So
- HKU-Pasteur Research Pole, School of Public Health, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong SAR, China
| | - Jacky Man Chun Chan
- Infectious Diseases Centre, Princess Margaret Hospital, Hospital Authority of Hong Kong, Hong Kong SAR, China
| | - Garrick K Yip
- HKU-Pasteur Research Pole, School of Public Health, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong SAR, China
| | - Thomas Shiu Hong Chik
- Infectious Diseases Centre, Princess Margaret Hospital, Hospital Authority of Hong Kong, Hong Kong SAR, China
| | - Yiquan Wang
- HKU-Pasteur Research Pole, School of Public Health, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong SAR, China
| | - Chris Yau Chung Choi
- Infectious Diseases Centre, Princess Margaret Hospital, Hospital Authority of Hong Kong, Hong Kong SAR, China
| | - Yihan Lin
- HKU-Pasteur Research Pole, School of Public Health, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong SAR, China
| | - Wilson W Ng
- HKU-Pasteur Research Pole, School of Public Health, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong SAR, China
| | - Jincun Zhao
- State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Leo L M Poon
- HKU-Pasteur Research Pole, School of Public Health, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong SAR, China
| | - J S Malik Peiris
- HKU-Pasteur Research Pole, School of Public Health, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong SAR, China; School of Public Health, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong SAR, China.
| | - Ian A Wilson
- Department of Integrative Structural and Computational Biology, The Scripps Research Institute, La Jolla, CA 92037, USA; The Skaggs Institute for Chemical Biology, The Scripps Research Institute, La Jolla, CA 92037, USA.
| | - Chris K P Mok
- HKU-Pasteur Research Pole, School of Public Health, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong SAR, China.
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17
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Yuan M, Wu NC, Zhu X, Lee CCD, So RTY, Lv H, Mok CKP, Wilson IA. A highly conserved cryptic epitope in the receptor binding domains of SARS-CoV-2 and SARS-CoV. Science 2020; 368:630-633. [PMID: 32245784 PMCID: PMC7164391 DOI: 10.1126/science.abb7269] [Citation(s) in RCA: 1157] [Impact Index Per Article: 289.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2020] [Accepted: 04/01/2020] [Indexed: 12/29/2022]
Abstract
The outbreak of coronavirus disease 2019 (COVID-19) caused by severe acute respiratory syndrome-coronavirus 2 (SARS-CoV-2) has now become a pandemic, but there is currently very little understanding of the antigenicity of the virus. We therefore determined the crystal structure of CR3022, a neutralizing antibody previously isolated from a convalescent SARS patient, in complex with the receptor binding domain (RBD) of the SARS-CoV-2 spike (S) protein at 3.1-angstrom resolution. CR3022 targets a highly conserved epitope, distal from the receptor binding site, that enables cross-reactive binding between SARS-CoV-2 and SARS-CoV. Structural modeling further demonstrates that the binding epitope can only be accessed by CR3022 when at least two RBDs on the trimeric S protein are in the "up" conformation and slightly rotated. These results provide molecular insights into antibody recognition of SARS-CoV-2.
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MESH Headings
- Amino Acid Sequence
- Angiotensin-Converting Enzyme 2
- Antibodies, Neutralizing/chemistry
- Antibodies, Neutralizing/immunology
- Antibodies, Viral/chemistry
- Antibodies, Viral/immunology
- Antibody Affinity
- Antigens, Viral/chemistry
- Antigens, Viral/immunology
- Betacoronavirus/chemistry
- Betacoronavirus/immunology
- Binding Sites
- Cross Reactions
- Crystallography, X-Ray
- Epitopes/chemistry
- Epitopes/immunology
- Models, Molecular
- Peptidyl-Dipeptidase A/chemistry
- Peptidyl-Dipeptidase A/metabolism
- Protein Conformation
- Protein Domains
- Protein Interaction Domains and Motifs/immunology
- Receptors, Coronavirus
- Receptors, Virus/chemistry
- Receptors, Virus/metabolism
- Severe acute respiratory syndrome-related coronavirus/chemistry
- Severe acute respiratory syndrome-related coronavirus/immunology
- SARS-CoV-2
- Spike Glycoprotein, Coronavirus/chemistry
- Spike Glycoprotein, Coronavirus/immunology
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Affiliation(s)
- Meng Yuan
- Department of Integrative Structural and Computational Biology, The Scripps Research Institute, La Jolla, CA 92037, USA
| | - Nicholas C Wu
- Department of Integrative Structural and Computational Biology, The Scripps Research Institute, La Jolla, CA 92037, USA
| | - Xueyong Zhu
- Department of Integrative Structural and Computational Biology, The Scripps Research Institute, La Jolla, CA 92037, USA
| | - Chang-Chun D Lee
- Department of Integrative Structural and Computational Biology, The Scripps Research Institute, La Jolla, CA 92037, USA
| | - Ray T Y So
- HKU-Pasteur Research Pole, School of Public Health, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong SAR, China
| | - Huibin Lv
- HKU-Pasteur Research Pole, School of Public Health, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong SAR, China
| | - Chris K P Mok
- HKU-Pasteur Research Pole, School of Public Health, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong SAR, China.
| | - Ian A Wilson
- Department of Integrative Structural and Computational Biology, The Scripps Research Institute, La Jolla, CA 92037, USA.
- The Skaggs Institute for Chemical Biology, The Scripps Research Institute, La Jolla, CA, 92037, USA
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18
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Lv H, Wu NC, Tsang OTY, Yuan M, Perera RAPM, Leung WS, So RTY, Chan JMC, Yip GK, Chik TSH, Wang Y, Choi CYC, Lin Y, Ng WW, Zhao J, Poon LLM, Peiris JSM, Wilson IA, Mok CKP. Cross-reactive antibody response between SARS-CoV-2 and SARS-CoV infections. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2020:2020.03.15.993097. [PMID: 32511317 PMCID: PMC7239046 DOI: 10.1101/2020.03.15.993097] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
The World Health Organization has recently declared the ongoing outbreak of COVID-19, which is caused by a novel coronavirus SARS-CoV-2, as pandemic. There is currently a lack of knowledge in the antibody response elicited from SARS-CoV-2 infection. One major immunological question is concerning the antigenic differences between SARS-CoV-2 and SARS-CoV. We address this question by using plasma from patients infected by SARS-CoV-2 or SARS-CoV, and plasma obtained from infected or immunized mice. Our results show that while cross-reactivity in antibody binding to the spike protein is common, cross-neutralization of the live viruses is rare, indicating the presence of non-neutralizing antibody response to conserved epitopes in the spike. Whether these non-neutralizing antibody responses will lead to antibody-dependent disease enhancement needs to be addressed in the future. Overall, this study not only addresses a fundamental question regarding the antigenicity differences between SARS-CoV-2 and SARS-CoV, but also has important implications in vaccine.
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Affiliation(s)
- Huibin Lv
- HKU-Pasteur Research Pole, School of Public Health, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong SAR, China
| | - Nicholas C. Wu
- Department of Integrative Structural and Computational Biology, The Scripps Research Institute, La Jolla, CA 92037, USA
| | - Owen Tak-Yin Tsang
- Infectious Diseases Centre, Princess Margaret Hospital, Hospital Authority of Hong Kong
| | - Meng Yuan
- Department of Integrative Structural and Computational Biology, The Scripps Research Institute, La Jolla, CA 92037, USA
| | - Ranawaka A. P. M. Perera
- School of Public Health, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong SAR, China
| | - Wai Shing Leung
- Infectious Diseases Centre, Princess Margaret Hospital, Hospital Authority of Hong Kong
| | - Ray T. Y. So
- HKU-Pasteur Research Pole, School of Public Health, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong SAR, China
| | - Jacky Man Chun Chan
- Infectious Diseases Centre, Princess Margaret Hospital, Hospital Authority of Hong Kong
| | - Garrick K. Yip
- HKU-Pasteur Research Pole, School of Public Health, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong SAR, China
| | - Thomas Shiu Hong Chik
- Infectious Diseases Centre, Princess Margaret Hospital, Hospital Authority of Hong Kong
| | - Yiquan Wang
- HKU-Pasteur Research Pole, School of Public Health, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong SAR, China
| | - Chris Yau Chung Choi
- Infectious Diseases Centre, Princess Margaret Hospital, Hospital Authority of Hong Kong
| | - Yihan Lin
- HKU-Pasteur Research Pole, School of Public Health, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong SAR, China
| | - Wilson W. Ng
- HKU-Pasteur Research Pole, School of Public Health, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong SAR, China
| | - Jincun Zhao
- State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Guangzhou Institute of Respiratory Health, the First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Leo L. M. Poon
- HKU-Pasteur Research Pole, School of Public Health, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong SAR, China
| | - J. S. Malik Peiris
- HKU-Pasteur Research Pole, School of Public Health, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong SAR, China
- School of Public Health, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong SAR, China
| | - Ian A. Wilson
- Department of Integrative Structural and Computational Biology, The Scripps Research Institute, La Jolla, CA 92037, USA
- The Skaggs Institute for Chemical Biology, The Scripps Research Institute, La Jolla, CA, 92037, USA
| | - Chris K. P. Mok
- HKU-Pasteur Research Pole, School of Public Health, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong SAR, China
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19
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Sroga P, Safronetz D, Stein DR. Nanobodies: a new approach for the diagnosis and treatment of viral infectious diseases. Future Virol 2020. [DOI: 10.2217/fvl-2019-0167] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
With the rise of viral infections and antibiotic resistance, there is a constant need for the development of more sensitive and effective treatment and diagnostic tools. Since their discovery in the early 1990s, Camelidae antibodies have been investigated as potential tools due to their unique structure and favorable characteristics. Members of this family produce conventional IgG antibodies as well as heavy-chain only IgG antibodies that do not possess light chains. The variable domain (VHH), or nanobody, demonstrates unique antigen-binding capabilities, enhanced stability, and its small size allows for delivery into the body using a nebulizer, thereby eliminating the unfavorable use of injections. In addition, the cost-effective and easy in vitro production of these antibodies are an attractive quality in terms of mass production. This review covers the past and current nanobody treatment and diagnostic developments aimed at viral infectious diseases, including a brief overview of protozoal, bacterial, and veterinary viral approaches.
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Affiliation(s)
- Patrycja Sroga
- Department of Medical Microbiology, University of Manitoba, Winnipeg, MB, Canada
| | - David Safronetz
- Department of Medical Microbiology, University of Manitoba, Winnipeg, MB, Canada
- Zoonotic Diseases & Special Pathogens, National Microbiology Laboratory, Public Health Agency of Canada, Winnipeg, MB, Canada
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20
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Burke CW, Froude JW, Rossi F, White CE, Moyer CL, Ennis J, Pitt ML, Streatfield S, Jones RM, Musiychuk K, Kervinen J, Zeitlin L, Yusibov V, Glass PJ. Therapeutic monoclonal antibody treatment protects nonhuman primates from severe Venezuelan equine encephalitis virus disease after aerosol exposure. PLoS Pathog 2019; 15:e1008157. [PMID: 31790515 PMCID: PMC6907853 DOI: 10.1371/journal.ppat.1008157] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2019] [Revised: 12/12/2019] [Accepted: 10/23/2019] [Indexed: 12/19/2022] Open
Abstract
There are no FDA licensed vaccines or therapeutics for Venezuelan equine encephalitis virus (VEEV) which causes a debilitating acute febrile illness in humans that can progress to encephalitis. Previous studies demonstrated that murine and macaque monoclonal antibodies (mAbs) provide prophylactic and therapeutic efficacy against VEEV peripheral and aerosol challenge in mice. Additionally, humanized versions of two neutralizing mAbs specific for the E2 glycoprotein, 1A3B-7 and 1A4A-1, administered singly protected mice against aerosolized VEEV. However, no studies have demonstrated protection in nonhuman primate (NHP) models of VEEV infection. Here, we evaluated a chimeric antibody 1A3B-7 (c1A3B-7) containing mouse variable regions on a human IgG framework and a humanized antibody 1A4A-1 containing a serum half-life extension modification (Hu-1A4A-1-YTE) for their post-exposure efficacy in NHPs exposed to aerosolized VEEV. Approximately 24 hours after exposure, NHPs were administered a single bolus intravenous mAb. Control NHPs had typical biomarkers of VEEV infection including measurable viremia, fever, and lymphopenia. In contrast, c1A3B-7 treated NHPs had significant reductions in viremia and lymphopenia and on average approximately 50% reduction in fever. Although not statistically significant, Hu-1A4A-1-YTE administration did result in reductions in viremia and fever duration. Delay of treatment with c1A3B-7 to 48 hours post-exposure still provided NHPs protection from severe VEE disease through reductions in viremia and fever. These results demonstrate that post-exposure administration of c1A3B-7 protected macaques from development of severe VEE disease even when administered 48 hours following aerosol exposure and describe the first evaluations of VEEV-specific mAbs for post-exposure prophylactic use in NHPs. Viral mutations were identified in one NHP after c1A3B-7 treatment administered 24 hrs after virus exposure. This suggests that a cocktail-based therapy, or an alternative mAb against an epitope that cannot mutate without resulting in loss of viral fitness may be necessary for a highly effective therapeutic.
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Affiliation(s)
- Crystal W. Burke
- Virology Division, US Army Medical Research Institute of Infectious Disease, Fort Detrick, Maryland, United States of America
| | - Jeffery W. Froude
- Virology Division, US Army Medical Research Institute of Infectious Disease, Fort Detrick, Maryland, United States of America
| | - Franco Rossi
- Center of Aerobiological Sciences, US Army Medical Research Institute of Infectious Disease, Fort Detrick, Maryland, United States of America
| | - Charles E. White
- Biostatisics Branch, US Army Medical Research Institute of Infectious Disease, Fort Detrick Maryland, United States of America
| | - Crystal L. Moyer
- Mapp Biopharmaceutical, Inc., San Diego, California, United States of America
| | - Jane Ennis
- Mapp Biopharmaceutical, Inc., San Diego, California, United States of America
| | - M. Louise Pitt
- Virology Division, US Army Medical Research Institute of Infectious Disease, Fort Detrick, Maryland, United States of America
| | - Stephen Streatfield
- Fraunhofer USA Center for Molecular Biotechnology, Newark, Delaware, United States of America
| | - R. Mark Jones
- Fraunhofer USA Center for Molecular Biotechnology, Newark, Delaware, United States of America
| | - Konstantin Musiychuk
- Fraunhofer USA Center for Molecular Biotechnology, Newark, Delaware, United States of America
| | - Jukka Kervinen
- Fraunhofer USA Center for Molecular Biotechnology, Newark, Delaware, United States of America
| | - Larry Zeitlin
- Mapp Biopharmaceutical, Inc., San Diego, California, United States of America
| | - Vidadi Yusibov
- Fraunhofer USA Center for Molecular Biotechnology, Newark, Delaware, United States of America
| | - Pamela J. Glass
- Virology Division, US Army Medical Research Institute of Infectious Disease, Fort Detrick, Maryland, United States of America
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21
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Liu JL, Shriver-Lake LC, Zabetakis D, Goldman ER, Anderson GP. Selection of Single-Domain Antibodies towards Western Equine Encephalitis Virus. Antibodies (Basel) 2018; 7:E44. [PMID: 31544894 PMCID: PMC6698954 DOI: 10.3390/antib7040044] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2018] [Revised: 12/12/2018] [Accepted: 12/12/2018] [Indexed: 12/21/2022] Open
Abstract
In this work, we describe the selection and characterization of single-domain antibodies (sdAb) towards the E2/E3E2 envelope protein of the Western equine encephalitis virus (WEEV). Our purpose was to identify novel recognition elements which could be used for the detection, diagnosis, and perhaps treatment of western equine encephalitis (WEE). To achieve this goal, we prepared an immune phage display library derived from the peripheral blood lymphocytes of a llama that had been immunized with an equine vaccine that includes killed WEEV (West Nile Innovator + VEWT). This library was panned against recombinant envelope (E2/E3E2) protein from WEEV, and seven representative sdAb from the five identified sequence families were characterized. The specificity, affinity, and melting point of each sdAb was determined, and their ability to detect the recombinant protein in a MagPlex sandwich immunoassay was confirmed. Thus, these new binders represent novel recognition elements for the E2/E3E2 proteins of WEEV that are available to the research community for further investigation into their applicability for use in the diagnosis or treatment of WEE.
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Affiliation(s)
- Jinny L Liu
- Naval Research Laboratory, Center for Biomolecular Science and Engineering, Washington, DC 20375, USA.
| | - Lisa C Shriver-Lake
- Naval Research Laboratory, Center for Biomolecular Science and Engineering, Washington, DC 20375, USA.
| | - Dan Zabetakis
- Naval Research Laboratory, Center for Biomolecular Science and Engineering, Washington, DC 20375, USA.
| | - Ellen R Goldman
- Naval Research Laboratory, Center for Biomolecular Science and Engineering, Washington, DC 20375, USA.
| | - George P Anderson
- Naval Research Laboratory, Center for Biomolecular Science and Engineering, Washington, DC 20375, USA.
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