1
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Rai CI, Kuo TH, Chen YC. Novel Administration Routes, Delivery Vectors, and Application of Vaccines Based on Biotechnologies: A Review. Vaccines (Basel) 2024; 12:1002. [PMID: 39340032 PMCID: PMC11436249 DOI: 10.3390/vaccines12091002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2024] [Revised: 08/22/2024] [Accepted: 08/29/2024] [Indexed: 09/30/2024] Open
Abstract
Traditional vaccines can be classified into inactivated vaccines, live attenuated vaccines, and subunit vaccines given orally or via intramuscular (IM) injection or subcutaneous (SC) injection for the prevention of infectious diseases. Recently, recombinant protein vaccines, DNA vaccines, mRNA vaccines, and multiple/alternative administering route vaccines (e.g., microneedle or inhalation) have been developed to make vaccines more secure, effective, tolerable, and universal for the public. In addition to preventing infectious diseases, novel vaccines have currently been developed or are being developed to prevent or cure noninfectious diseases, including cancer. These vaccine platforms have been developed using various biotechnologies such as viral vectors, nanoparticles, mRNA, recombination DNA, subunit, novel adjuvants, and other vaccine delivery systems. In this review, we will explore the development of novel vaccines applying biotechnologies, such as vaccines based on novel administration routes, vaccines based on novel vectors, including viruses and nanoparticles, vaccines applied for cancer prevention, and therapeutic vaccines.
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Affiliation(s)
- Chung-I Rai
- Department of Cosmetic Science, Vanung University, 1, Van Nung Road, Chung-Li City 320676, Taiwan;
| | - Tsu-Hsiang Kuo
- Department of Rehabilitation Science, Jenteh Junior College of Medicine, Nursing and Management, Miaoli County 356006, Taiwan;
- Department of Biotechnology and Pharmaceutical Management, Jenteh Junior College of Medicine, Nursing and Management, Miaoli County 356006, Taiwan
| | - Yuan-Chuan Chen
- Department of Nursing, Jenteh Junior College of Medicine, Nursing and Management, Miaoli County 356006, Taiwan
- Department of Medical Technology, Jenteh Junior College of Medicine, Nursing and Management, Miaoli County 356006, Taiwan
- Program in Comparative Biochemistry, University of California, Berkeley, CA 94720, USA
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2
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Chen J, Guo X, Zou X, Wang M, Yang C, Hou W, Sprindzuk MV, Lu Z. The Biodistribution of Replication-Defective Simian Adenovirus 1 Vector in a Mouse Model. Viruses 2024; 16:550. [PMID: 38675893 PMCID: PMC11054548 DOI: 10.3390/v16040550] [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: 02/22/2024] [Revised: 03/26/2024] [Accepted: 03/29/2024] [Indexed: 04/28/2024] Open
Abstract
The administration route affects the biodistribution of a gene transfer vector and the expression of a transgene. A simian adenovirus 1 vector carrying firefly luciferase and GFP reporter genes (SAdV1-GFluc) were constructed, and its biodistribution was investigated in a mouse model by bioluminescence imaging and virus DNA tracking with real-time PCR. Luciferase activity and virus DNA were mainly found in the liver and spleen after the intravenous administration of SAdV1-GFluc. The results of flow cytometry illustrated that macrophages in the liver and spleen as well as hepatocytes were the target cells. Repeated inoculation was noneffective because of the stimulated serum neutralizing antibodies (NAbs) against SAdV-1. A transient, local expression of low-level luciferase was detected after intragastric administration, and the administration could be repeated without compromising the expression of the reporter gene. Intranasal administration led to a moderate, constant expression of a transgene in the whole respiratory tract and could be repeated one more time without a significant increase in the NAb titer. An immunohistochemistry assay showed that respiratory epithelial cells and macrophages in the lungs were transduced. High luciferase activity was restricted at the injection site and sustained for a week after intramuscular administration. A compromised transgene expression was observed after a repeated injection. When these mice were intramuscularly injected for a third time with the human adenovirus 5 (HAdV-5) vector carrying a luciferase gene, the luciferase activity recovered and reached the initial level, suggesting that the sequential use of SAdV-1 and HAdV-5 vectors was practicable. In short, the intranasal inoculation or intramuscular injection may be the preferred administration routes for the novel SAdV-1 vector in vaccine development.
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Affiliation(s)
- Juan Chen
- NHC Key Laboratory of Medical Virology and Viral Diseases, National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 100052, China; (J.C.); (X.G.); (X.Z.); (M.W.); (C.Y.); (W.H.)
- School of Public Health, Baotou Medical College, Inner Mongolia University of Science and Technology, Baotou 014040, China
| | - Xiaojuan Guo
- NHC Key Laboratory of Medical Virology and Viral Diseases, National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 100052, China; (J.C.); (X.G.); (X.Z.); (M.W.); (C.Y.); (W.H.)
| | - Xiaohui Zou
- NHC Key Laboratory of Medical Virology and Viral Diseases, National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 100052, China; (J.C.); (X.G.); (X.Z.); (M.W.); (C.Y.); (W.H.)
| | - Min Wang
- NHC Key Laboratory of Medical Virology and Viral Diseases, National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 100052, China; (J.C.); (X.G.); (X.Z.); (M.W.); (C.Y.); (W.H.)
| | - Chunlei Yang
- NHC Key Laboratory of Medical Virology and Viral Diseases, National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 100052, China; (J.C.); (X.G.); (X.Z.); (M.W.); (C.Y.); (W.H.)
- Henan Chemical Technician College, Kaifeng 475008, China
| | - Wenzhe Hou
- NHC Key Laboratory of Medical Virology and Viral Diseases, National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 100052, China; (J.C.); (X.G.); (X.Z.); (M.W.); (C.Y.); (W.H.)
| | - Matvey V. Sprindzuk
- United Institute of Informatics Problems, National Academy of Sciences of Belarus, 220012 Minsk, Belarus;
| | - Zhuozhuang Lu
- NHC Key Laboratory of Medical Virology and Viral Diseases, National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 100052, China; (J.C.); (X.G.); (X.Z.); (M.W.); (C.Y.); (W.H.)
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3
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McMahan K, Wegmann F, Aid M, Sciacca M, Liu J, Hachmann NP, Miller J, Jacob-Dolan C, Powers O, Hope D, Wu C, Pereira J, Murdza T, Mazurek CR, Hoyt A, Boon ACM, Davis-Gardner M, Suthar MS, Martinot AJ, Boursiquot M, Cook A, Pessaint L, Lewis MG, Andersen H, Tolboom J, Serroyen J, Solforosi L, Costes LMM, Zahn RC, Barouch DH. Mucosal boosting enhances vaccine protection against SARS-CoV-2 in macaques. Nature 2024; 626:385-391. [PMID: 38096903 PMCID: PMC10849944 DOI: 10.1038/s41586-023-06951-3] [Citation(s) in RCA: 19] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Accepted: 12/07/2023] [Indexed: 01/26/2024]
Abstract
A limitation of current SARS-CoV-2 vaccines is that they provide minimal protection against infection with current Omicron subvariants1,2, although they still provide protection against severe disease. Enhanced mucosal immunity may be required to block infection and onward transmission. Intranasal administration of current vaccines has proven inconsistent3-7, suggesting that alternative immunization strategies may be required. Here we show that intratracheal boosting with a bivalent Ad26-based SARS-CoV-2 vaccine results in substantial induction of mucosal humoral and cellular immunity and near-complete protection against SARS-CoV-2 BQ.1.1 challenge. A total of 40 previously immunized rhesus macaques were boosted with a bivalent Ad26 vaccine by the intramuscular, intranasal and intratracheal routes, or with a bivalent mRNA vaccine by the intranasal route. Ad26 boosting by the intratracheal route led to a substantial expansion of mucosal neutralizing antibodies, IgG and IgA binding antibodies, and CD8+ and CD4+ T cell responses, which exceeded those induced by Ad26 boosting by the intramuscular and intranasal routes. Intratracheal Ad26 boosting also led to robust upregulation of cytokine, natural killer, and T and B cell pathways in the lungs. After challenge with a high dose of SARS-CoV-2 BQ.1.1, intratracheal Ad26 boosting provided near-complete protection, whereas the other boosting strategies proved less effective. Protective efficacy correlated best with mucosal humoral and cellular immune responses. These data demonstrate that these immunization strategies induce robust mucosal immunity, suggesting the feasibility of developing vaccines that block respiratory viral infections.
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Affiliation(s)
- Katherine McMahan
- Center for Virology and Vaccine Research, Beth Israel Deaconess Medical Center, Boston, MA, USA
| | - Frank Wegmann
- Janssen Vaccines and Prevention, Leiden, Netherlands
| | - Malika Aid
- Center for Virology and Vaccine Research, Beth Israel Deaconess Medical Center, Boston, MA, USA
| | - Michaela Sciacca
- Center for Virology and Vaccine Research, Beth Israel Deaconess Medical Center, Boston, MA, USA
| | - Jinyan Liu
- Center for Virology and Vaccine Research, Beth Israel Deaconess Medical Center, Boston, MA, USA
| | - Nicole P Hachmann
- Center for Virology and Vaccine Research, Beth Israel Deaconess Medical Center, Boston, MA, USA
| | - Jessica Miller
- Center for Virology and Vaccine Research, Beth Israel Deaconess Medical Center, Boston, MA, USA
| | - Catherine Jacob-Dolan
- Center for Virology and Vaccine Research, Beth Israel Deaconess Medical Center, Boston, MA, USA
- Ragon Institute of MGH, MIT and Harvard, Cambridge, MA, USA
| | - Olivia Powers
- Center for Virology and Vaccine Research, Beth Israel Deaconess Medical Center, Boston, MA, USA
| | - David Hope
- Center for Virology and Vaccine Research, Beth Israel Deaconess Medical Center, Boston, MA, USA
| | - Cindy Wu
- Center for Virology and Vaccine Research, Beth Israel Deaconess Medical Center, Boston, MA, USA
| | - Juliana Pereira
- Center for Virology and Vaccine Research, Beth Israel Deaconess Medical Center, Boston, MA, USA
| | - Tetyana Murdza
- Center for Virology and Vaccine Research, Beth Israel Deaconess Medical Center, Boston, MA, USA
| | - Camille R Mazurek
- Center for Virology and Vaccine Research, Beth Israel Deaconess Medical Center, Boston, MA, USA
| | - Amelia Hoyt
- Center for Virology and Vaccine Research, Beth Israel Deaconess Medical Center, Boston, MA, USA
| | | | | | | | - Amanda J Martinot
- Tufts University Cummings School of Veterinary Medicine, Grafton, MA, USA
| | | | | | | | | | | | | | - Jan Serroyen
- Janssen Vaccines and Prevention, Leiden, Netherlands
| | | | | | - Roland C Zahn
- Janssen Vaccines and Prevention, Leiden, Netherlands
| | - Dan H Barouch
- Center for Virology and Vaccine Research, Beth Israel Deaconess Medical Center, Boston, MA, USA.
- Ragon Institute of MGH, MIT and Harvard, Cambridge, MA, USA.
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4
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Lee HD, Chun J, Kim S, Aleksandra N, Lee C, Yoon D, Lee HJ, Kim YB. Comparative Biodistribution Study of Baculoviral and Adenoviral Vector Vaccines against SARS-CoV-2. J Microbiol Biotechnol 2024; 34:185-191. [PMID: 37830223 PMCID: PMC10840461 DOI: 10.4014/jmb.2308.08042] [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: 08/23/2023] [Revised: 09/22/2023] [Accepted: 09/27/2023] [Indexed: 10/14/2023]
Abstract
Various types of vaccines have been developed against COVID-19, including vector vaccines. Among the COVID-19 vaccines, AstraZeneca's chimpanzee adenoviral vaccine was the first to be commercialized. For viral vector vaccines, biodistribution studies are critical to vaccine safety, gene delivery, and efficacy. This study compared the biodistribution of the baculoviral vector vaccine (AcHERV-COVID19) and the adenoviral vector vaccine (Ad-COVID19). Both vaccines were administered intramuscularly to mice, and the distribution of the SARS-CoV-2 S gene in each tissue was evaluated for up to 30 days. After vaccination, serum and various tissue samples were collected from the mice at each time point, and IgG levels and DNA copy numbers were measured using an enzyme-linked immunosorbent assay and a quantitative real-time polymerase chain reaction. AcHERV-COVID19 and Ad-COVID19 distribution showed that the SARS-CoV-2 spike gene remained predominantly at the injection site in the mouse muscle. In kidney, liver, and spleen tissues, the AcHERV-COVID19 group showed about 2-4 times higher persistence of the SARS-CoV-2 spike gene than the Ad-COVID19 group. The distribution patterns of AcHERV-COVID19 and Ad-COVID19 within various organs highlight their contrasting biodistribution profiles, with AcHERV-COVID19 exhibiting a broader and prolonged presence in the body compared to Ad-COVID19. Understanding the biodistribution profile of AcHERV-COVID19 and Ad-COVID19 could help select viral vectors for future vaccine development.
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Affiliation(s)
- Hyeon Dong Lee
- Department of Biomedical Science and Engineering, Konkuk University, Seoul 05029, Republic of Korea
| | - Jungmin Chun
- Department of Biomedical Science and Engineering, Konkuk University, Seoul 05029, Republic of Korea
| | - Sehyun Kim
- KR BioTech Co. Ltd., Seoul 05029, Republic of Korea
| | - Nowakowska Aleksandra
- Department of Biomedical Science and Engineering, Konkuk University, Seoul 05029, Republic of Korea
| | - Chanyeong Lee
- Department of Biomedical Science and Engineering, Konkuk University, Seoul 05029, Republic of Korea
| | - Doyoung Yoon
- Department of Biomedical Science and Engineering, Konkuk University, Seoul 05029, Republic of Korea
| | - Hee-jung Lee
- Department of Biomedical Science and Engineering, Konkuk University, Seoul 05029, Republic of Korea
| | - Young Bong Kim
- Department of Biomedical Science and Engineering, Konkuk University, Seoul 05029, Republic of Korea
- KR BioTech Co. Ltd., Seoul 05029, Republic of Korea
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5
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Moliva JI, Andrew SF, Flynn BJ, Wagner DA, Foulds KE, Gagne M, Flebbe DR, Lamb E, Provost S, Marquez J, Mychalowych A, Lorag CG, Honeycutt CC, Burnett MR, McCormick L, Henry AR, Godbole S, Davis-Gardner ME, Minai M, Bock KW, Nagata BM, Todd JPM, McCarthy E, Dodson A, Kouneski K, Cook A, Pessaint L, Ry AV, Valentin D, Young S, Littman Y, Boon ACM, Suthar MS, Lewis MG, Andersen H, Alves DA, Woodward R, Leuzzi A, Vitelli A, Colloca S, Folgori A, Raggiolli A, Capone S, Nason MC, Douek DC, Roederer M, Seder RA, Sullivan NJ. Durable immunity to SARS-CoV-2 in both lower and upper airways achieved with a gorilla adenovirus (GRAd) S-2P vaccine in non-human primates. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.11.22.567930. [PMID: 38076895 PMCID: PMC10705562 DOI: 10.1101/2023.11.22.567930] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/23/2023]
Abstract
SARS-CoV-2 continues to pose a global threat, and current vaccines, while effective against severe illness, fall short in preventing transmission. To address this challenge, there's a need for vaccines that induce mucosal immunity and can rapidly control the virus. In this study, we demonstrate that a single immunization with a novel gorilla adenovirus-based vaccine (GRAd) carrying the pre-fusion stabilized Spike protein (S-2P) in non-human primates provided protective immunity for over one year against the BA.5 variant of SARS-CoV-2. A prime-boost regimen using GRAd followed by adjuvanted S-2P (GRAd+S-2P) accelerated viral clearance in both the lower and upper airways. GRAd delivered via aerosol (GRAd(AE)+S-2P) modestly improved protection compared to its matched intramuscular regimen, but showed dramatically superior boosting by mRNA and, importantly, total virus clearance in the upper airway by day 4 post infection. GrAd vaccination regimens elicited robust and durable systemic and mucosal antibody responses to multiple SARS-CoV-2 variants, but only GRAd(AE)+S-2P generated long-lasting T cell responses in the lung. This research underscores the flexibility of the GRAd vaccine platform to provide durable immunity against SARS-CoV-2 in both the lower and upper airways.
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Affiliation(s)
- Juan I Moliva
- Vaccine Research Center, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland, 20892, United States of America
- National Emerging Infectious Diseases Laboratories, Boston University, Boston, Massachusetts, United States of America
| | - Shayne F Andrew
- Vaccine Research Center, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland, 20892, United States of America
| | - Barbara J Flynn
- Vaccine Research Center, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland, 20892, United States of America
| | - Danielle A Wagner
- Vaccine Research Center, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland, 20892, United States of America
| | - Kathryn E Foulds
- Vaccine Research Center, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland, 20892, United States of America
| | - Matthew Gagne
- Vaccine Research Center, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland, 20892, United States of America
| | - Dillon R Flebbe
- Vaccine Research Center, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland, 20892, United States of America
| | - Evan Lamb
- Vaccine Research Center, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland, 20892, United States of America
| | - Samantha Provost
- Vaccine Research Center, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland, 20892, United States of America
| | - Josue Marquez
- Vaccine Research Center, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland, 20892, United States of America
| | - Anna Mychalowych
- Vaccine Research Center, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland, 20892, United States of America
| | - Cynthia G Lorag
- Vaccine Research Center, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland, 20892, United States of America
| | - Christopher Cole Honeycutt
- Vaccine Research Center, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland, 20892, United States of America
| | - Matthew R Burnett
- Vaccine Research Center, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland, 20892, United States of America
| | - Lauren McCormick
- Vaccine Research Center, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland, 20892, United States of America
| | - Amy R Henry
- Vaccine Research Center, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland, 20892, United States of America
| | - Sucheta Godbole
- Vaccine Research Center, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland, 20892, United States of America
| | - Meredith E Davis-Gardner
- Department of Pediatrics, Emory Vaccine Center, Yerkes National Primate Research Center, Emory University School of Medicine, Atlanta, Georgia, 30322, United States of America
| | - Mahnaz Minai
- Infectious Disease Pathogenesis Section, Comparative Medicine Branch, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, Maryland, 20892, United States of America
| | - Kevin W Bock
- Infectious Disease Pathogenesis Section, Comparative Medicine Branch, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, Maryland, 20892, United States of America
| | - Bianca M Nagata
- Infectious Disease Pathogenesis Section, Comparative Medicine Branch, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, Maryland, 20892, United States of America
| | - John-Paul M Todd
- Vaccine Research Center, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland, 20892, United States of America
| | - Elizabeth McCarthy
- Vaccine Research Center, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland, 20892, United States of America
| | - Alan Dodson
- Bioqual, Inc., Rockville, Maryland, 20850, United States of America
| | - Katelyn Kouneski
- Bioqual, Inc., Rockville, Maryland, 20850, United States of America
| | - Anthony Cook
- Bioqual, Inc., Rockville, Maryland, 20850, United States of America
| | - Laurent Pessaint
- Bioqual, Inc., Rockville, Maryland, 20850, United States of America
| | - Alex Van Ry
- Bioqual, Inc., Rockville, Maryland, 20850, United States of America
| | - Daniel Valentin
- Bioqual, Inc., Rockville, Maryland, 20850, United States of America
| | - Steve Young
- Vaccine Research Center, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland, 20892, United States of America
| | - Yoav Littman
- Vaccine Research Center, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland, 20892, United States of America
| | - Adrianus C M Boon
- Department of Medicine, Washington University School of Medicine, St. Louis, Missouri, 63110, United States of America
| | - Mehul S Suthar
- Department of Pediatrics, Emory Vaccine Center, Yerkes National Primate Research Center, Emory University School of Medicine, Atlanta, Georgia, 30322, United States of America
| | - Mark G Lewis
- Bioqual, Inc., Rockville, Maryland, 20850, United States of America
| | - Hanne Andersen
- Bioqual, Inc., Rockville, Maryland, 20850, United States of America
| | - Derron A Alves
- Infectious Disease Pathogenesis Section, Comparative Medicine Branch, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, Maryland, 20892, United States of America
| | - Ruth Woodward
- Vaccine Research Center, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland, 20892, United States of America
| | | | | | | | | | | | | | - Martha C Nason
- Biostatistics Research Branch, Division of Clinical Research, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland, 20892, United States of America
| | - Daniel C Douek
- Vaccine Research Center, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland, 20892, United States of America
| | - Mario Roederer
- Vaccine Research Center, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland, 20892, United States of America
| | - Robert A Seder
- Vaccine Research Center, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland, 20892, United States of America
- Correspondence: and
| | - Nancy J Sullivan
- National Emerging Infectious Diseases Laboratories, Boston University, Boston, Massachusetts, United States of America
- Correspondence: and
- Lead contact
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6
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Heida R, Frijlink HW, Hinrichs WLJ. Inhalation of vaccines and antiviral drugs to fight respiratory virus infections: reasons to prioritize the pulmonary route of administration. mBio 2023; 14:e0129523. [PMID: 37768057 PMCID: PMC10653782 DOI: 10.1128/mbio.01295-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/29/2023] Open
Abstract
Many of the current pandemic threats are caused by viruses that infect the respiratory tract. Remarkably though, the majority of vaccines and antiviral drugs are administered via alternative routes. In this perspective, we argue that the pulmonary route of administration deserves more attention in the search for novel therapeutic strategies against respiratory virus infections. Firstly, vaccines administered at the viral portal of entry can induce a broader immune response, employing the mucosal arm of the immune system; secondly, direct administration of antiviral drugs at the target site leads to superior bioavailability, enabling lower dosing and reducing the chance of side effects. We further elaborate on why the pulmonary route may induce a superior effect compared to the intranasal route of administration and provide reasons why dry powder formulations for inhalation have significant advantages over standard liquid formulations.
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Affiliation(s)
- Rick Heida
- Department of Pharmaceutical Technology and Biopharmacy, Groningen Research Institute of Pharmacy, University of Groningen, Groningen, The Netherlands
| | - Henderik W. Frijlink
- Department of Pharmaceutical Technology and Biopharmacy, Groningen Research Institute of Pharmacy, University of Groningen, Groningen, The Netherlands
| | - Wouter L. J. Hinrichs
- Department of Pharmaceutical Technology and Biopharmacy, Groningen Research Institute of Pharmacy, University of Groningen, Groningen, The Netherlands
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7
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Dotiwala F, Upadhyay AK. Next Generation Mucosal Vaccine Strategy for Respiratory Pathogens. Vaccines (Basel) 2023; 11:1585. [PMID: 37896988 PMCID: PMC10611113 DOI: 10.3390/vaccines11101585] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2023] [Revised: 10/06/2023] [Accepted: 10/10/2023] [Indexed: 10/29/2023] Open
Abstract
Inducing humoral and cytotoxic mucosal immunity at the sites of pathogen entry has the potential to prevent the infection from getting established. This is different from systemic vaccination, which protects against the development of systemic symptoms. The field of mucosal vaccination has seen fewer technological advances compared to nucleic acid and subunit vaccine advances for injectable vaccine platforms. The advent of the next-generation adenoviral vectors has given a boost to mucosal vaccine research. Basic research into the mechanisms regulating innate and adaptive mucosal immunity and the discovery of effective and safe mucosal vaccine adjuvants will continue to improve mucosal vaccine design. The results from clinical trials of inhaled COVID-19 vaccines demonstrate their ability to induce the proliferation of cytotoxic T cells and the production of secreted IgA and IgG antibodies locally, unlike intramuscular vaccinations. However, these mucosal vaccines induce systemic immune responses at par with systemic vaccinations. This review summarizes the function of the respiratory mucosa-associated lymphoid tissue and the advantages that the adenoviral vectors provide as inhaled vaccine platforms.
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Affiliation(s)
- Farokh Dotiwala
- Ocugen Inc., 11 Great Valley Parkway, Malvern, PA 19355, USA
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8
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Jeyanathan M, Afkhami S, Kang A, Xing Z. Viral-vectored respiratory mucosal vaccine strategies. Curr Opin Immunol 2023; 84:102370. [PMID: 37499279 DOI: 10.1016/j.coi.2023.102370] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2023] [Revised: 06/29/2023] [Accepted: 06/30/2023] [Indexed: 07/29/2023]
Abstract
Increasing global concerns of pandemic respiratory viruses highlight the importance of developing optimal vaccination strategies that encompass vaccine platform, delivery route, and regimens. The decades-long effort to develop vaccines to combat respiratory infections such as influenza, respiratory syncytial virus, and tuberculosis has met with challenges, including the inability of systemically administered vaccines to induce respiratory mucosal (RM) immunity. In this regard, ample preclinical and available clinical studies have demonstrated the superiority of RM vaccination to induce RM immunity over parenteral route of vaccination. A great stride has been made in developing vaccines for RM delivery against respiratory pathogens, including M. tuberculosis and SARS-CoV-2. In particular, inhaled aerosol delivery of adenoviral-vectored vaccines has shown significant promise.
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Affiliation(s)
- Mangalakumari Jeyanathan
- McMaster Immunology Research Centre and Department of Medicine, McMaster University, Hamilton, ON L8S 4K1, Canada
| | - Sam Afkhami
- McMaster Immunology Research Centre and Department of Medicine, McMaster University, Hamilton, ON L8S 4K1, Canada
| | - Alisha Kang
- McMaster Immunology Research Centre and Department of Medicine, McMaster University, Hamilton, ON L8S 4K1, Canada
| | - Zhou Xing
- McMaster Immunology Research Centre and Department of Medicine, McMaster University, Hamilton, ON L8S 4K1, Canada.
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9
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Wang S, Qin M, Xu L, Mu T, Zhao P, Sun B, Wu Y, Song L, Wu H, Wang W, Liu X, Li Y, Yang F, Xu K, He Z, Klein M, Wu K. Aerosol Inhalation of Chimpanzee Adenovirus Vectors (ChAd68) Expressing Ancestral or Omicron BA.1 Stabilized Pre-Fusion Spike Glycoproteins Protects Non-Human Primates against SARS-CoV-2 Infection. Vaccines (Basel) 2023; 11:1427. [PMID: 37766104 PMCID: PMC10535855 DOI: 10.3390/vaccines11091427] [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: 07/10/2023] [Revised: 08/12/2023] [Accepted: 08/22/2023] [Indexed: 09/29/2023] Open
Abstract
Current COVID-19 vaccines are effective countermeasures to control the SARS-CoV-2 virus pandemic by inducing systemic immune responses through intramuscular injection. However, respiratory mucosal immunization will be needed to elicit local sterilizing immunity to prevent virus replication in the nasopharynx, shedding, and transmission. In this study, we first compared the immunoprotective ability of a chimpanzee replication-deficient adenovirus-vectored COVID-19 vaccine expressing a stabilized pre-fusion spike glycoprotein from the ancestral SARS-CoV-2 strain Wuhan-Hu-1 (BV-AdCoV-1) administered through either aerosol inhalation, intranasal spray, or intramuscular injection in cynomolgus monkeys and rhesus macaques. Compared with intranasal administration, aerosol inhalation of BV-AdCoV-1 elicited stronger humoral and mucosal immunity that conferred excellent protection against SARS-CoV-2 infection in rhesus macaques. Importantly, aerosol inhalation induced immunity comparable to that obtained by intramuscular injection, although at a significantly lower dose. Furthermore, to address the problem of immune escape variants, we evaluated the merits of heterologous boosting with an adenovirus-based Omicron BA.1 vaccine (C68-COA04). Boosting rhesus macaques vaccinated with two doses of BV-AdCoV-1 with either the homologous or the heterologous C68-COA04 vector resulted in cross-neutralizing immunity against WT, Delta, and Omicron subvariants, including BA.4/5 stronger than that obtained by administering a bivalent BV-AdCoV-1/C68-COA04 vaccine. These results demonstrate that the administration of BV-AdCoV-1 or C68-COA04 via aerosol inhalation is a promising approach to prevent SARS-CoV-2 infection and transmission and curtail the pandemic spread.
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Affiliation(s)
- Shen Wang
- Regulatory and Medical Affairs Department, Wuhan BravoVax Co., Ltd., Wuhan 430070, China; (S.W.); (L.S.)
| | - Mian Qin
- Project Management Department, Wuhan BravoVax Co., Ltd., Wuhan 430070, China; (M.Q.); (L.X.)
| | - Long Xu
- Project Management Department, Wuhan BravoVax Co., Ltd., Wuhan 430070, China; (M.Q.); (L.X.)
| | - Ting Mu
- Innovative Discovery Department, Wuhan BravoVax Co., Ltd., Wuhan 430070, China; (T.M.); (B.S.)
| | - Ping Zhao
- Test Development Department, Wuhan BravoVax Co., Ltd., Wuhan 430070, China; (P.Z.); (Y.W.)
| | - Bing Sun
- Innovative Discovery Department, Wuhan BravoVax Co., Ltd., Wuhan 430070, China; (T.M.); (B.S.)
| | - Yue Wu
- Test Development Department, Wuhan BravoVax Co., Ltd., Wuhan 430070, China; (P.Z.); (Y.W.)
| | - Lingli Song
- Regulatory and Medical Affairs Department, Wuhan BravoVax Co., Ltd., Wuhan 430070, China; (S.W.); (L.S.)
| | - Han Wu
- Quality Control Department, Wuhan BravoVax Co., Ltd., Wuhan 430070, China;
| | - Weicheng Wang
- Pilot Production Department, Wuhan BravoVax Co., Ltd., Wuhan 430070, China;
| | - Xingwen Liu
- Quality Assurance Department, Wuhan BravoVax Co., Ltd., Wuhan 430070, China;
| | - Yanyan Li
- Institute of Medical Biology, Chinese Academy of Medical Sciences and Peking Union Medical College, Kunming 650000, China; (Y.L.); (Z.H.)
| | - Fengmei Yang
- Institute of Medical Biology, Chinese Academy of Medical Sciences and Peking Union Medical College, Kunming 650000, China; (Y.L.); (Z.H.)
| | - Ke Xu
- State Key Laboratory of Virology, College of Life Sciences, Wuhan University, Wuhan 430072, China;
- Executive Office, Wuhan BravoVax Co., Ltd., Wuhan 430070, China;
| | - Zhanlong He
- Institute of Medical Biology, Chinese Academy of Medical Sciences and Peking Union Medical College, Kunming 650000, China; (Y.L.); (Z.H.)
| | - Michel Klein
- Executive Office, Wuhan BravoVax Co., Ltd., Wuhan 430070, China;
- Executive Office, Shanghai BravoBio Co., Ltd., Shanghai 200000, China
| | - Ke Wu
- Executive Office, Wuhan BravoVax Co., Ltd., Wuhan 430070, China;
- Executive Office, Shanghai BravoBio Co., Ltd., Shanghai 200000, China
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10
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Sun YF, Guo Y, Xu C, Liu Y, Zhao X, Liu Q, Jeppesen E, Wang H, Xie P. Will "Air Eutrophication" Increase the Risk of Ecological Threat to Public Health? ENVIRONMENTAL SCIENCE & TECHNOLOGY 2023; 57:10512-10520. [PMID: 37428654 PMCID: PMC10373653 DOI: 10.1021/acs.est.3c01368] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/20/2023] [Indexed: 07/12/2023]
Abstract
Aquatic eutrophication, often with anthropogenic causes, facilitates blooms of cyanobacteria including cyanotoxin producing species, which profoundly impact aquatic ecosystems and human health. An emerging concern is that aquatic eutrophication may interact with other environmental changes and thereby lead to unexpected cascading effects on terrestrial systems. Here, we synthesize recent evidence showing the possibility that accelerating eutrophication will spill over from aquatic ecosystems to the atmosphere via "air eutrophication", a novel concept that refers to a process promoting the growth of airborne algae, some of them with the capacity to produce toxic compounds for humans and other organisms. Being catalyzed by various anthropogenic forcings─including aquatic eutrophication, climate warming, air contamination, and artificial light at night─accelerated air eutrophication may be expected in the future, posing a potentially increasing risk of threat to public health and the environment. So far knowledge of this topic is sparse, and we therefore consider air eutrophication a potentially important research field and propose an agenda of cross-discipline research. As a contribution, we have calculated a tolerable daily intake of 17 ng m-3 day-1 for the nasal intake of microcystins by humans.
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Affiliation(s)
- Yan-Feng Sun
- Institute
for Ecological Research and Pollution Control of Plateau Lakes, School
of Ecology and Environmental Science, Yunnan
University, Kunming 650500, China
| | - Yuming Guo
- Climate,
Air Quality Research Unit, School of Public Health and Preventive
Medicine, Monash University, Melbourne 3800, Australia
- Department
of Epidemiology and Preventive Medicine, School of Public Health and
Preventive Medicine, Monash University, Melbourne 3800, Australia
| | - Chi Xu
- School
of Life Sciences, Nanjing University, Nanjing 210093, China
| | - Ying Liu
- Institute
for Ecological Research and Pollution Control of Plateau Lakes, School
of Ecology and Environmental Science, Yunnan
University, Kunming 650500, China
| | - Xu Zhao
- Institute
for Ecological Research and Pollution Control of Plateau Lakes, School
of Ecology and Environmental Science, Yunnan
University, Kunming 650500, China
| | - Qian Liu
- State
Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese
Academy of Sciences, Beijing 100085, China
| | - Erik Jeppesen
- Institute
for Ecological Research and Pollution Control of Plateau Lakes, School
of Ecology and Environmental Science, Yunnan
University, Kunming 650500, China
- Department
of Ecoscience, Aarhus University, Aarhus 8000, Denmark
- Sino-Danish
Centre for Education and Research, Beijing 100190, China
- Limnology
Laboratory, Department of Biological Sciences and Centre for Ecosystem
Research and Implementation (EKOSAM), Middle
East Technical University, Ankara 06800, Turkey
- Institute
of Marine Sciences, Middle East Technical University, Mersin 33731, Turkey
| | - Haijun Wang
- Institute
for Ecological Research and Pollution Control of Plateau Lakes, School
of Ecology and Environmental Science, Yunnan
University, Kunming 650500, China
| | - Ping Xie
- Institute
for Ecological Research and Pollution Control of Plateau Lakes, School
of Ecology and Environmental Science, Yunnan
University, Kunming 650500, China
- Donghu
Experimental Station of Lake Ecosystems, State Key Laboratory of Freshwater
Ecology and Biotechnology, Institute of
Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China
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11
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Komalla V, Wong CYJ, Sibum I, Muellinger B, Nijdam W, Chaugule V, Soria J, Ong HX, Buchmann NA, Traini D. Advances in soft mist inhalers. Expert Opin Drug Deliv 2023; 20:1055-1070. [PMID: 37385962 DOI: 10.1080/17425247.2023.2231850] [Citation(s) in RCA: 15] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2023] [Revised: 06/21/2023] [Accepted: 06/28/2023] [Indexed: 07/01/2023]
Abstract
INTRODUCTION Soft mist inhalers (SMIs) are propellant-free inhalers that utilize mechanical power to deliver single or multiple doses of inhalable drug aerosols in the form of a slow mist to patients. Compared to traditional inhalers, SMIs allow for a longer and slower release of aerosol with a smaller ballistic effect, leading to a limited loss in the oropharyngeal area, whilst requiring little coordination of actuation and inhalation by patients. Currently, the Respimat® is the only commercially available SMI, with several others in different stages of preclinical and clinical development. AREAS COVERED The primary purpose of this review is to critically assess recent advances in SMIs for the delivery of inhaled therapeutics. EXPERT OPINION Advanced particle formulations, such as nanoparticles which target specific areas of the lung, Biologics, such as vaccines, proteins, and antibodies (which are sensitive to aerosolization), are expected to be generally delivered by SMIs. Furthermore, repurposed drugs are expected to constitute a large share of future formulations to be delivered by SMIs. SMIs can also be employed for the delivery of formulations that target systemic diseases. Finally, digitalizing SMIs would improve patient adherence and provide clinicians with fundamental insights into patients' treatment progress.
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Affiliation(s)
- Varsha Komalla
- Respiratory Technology, Woolcock Institute of Medical Research, Sydney, Australia
| | - Chun Yuen Jerry Wong
- Respiratory Technology, Woolcock Institute of Medical Research, Sydney, Australia
- Macquarie Medical School, Department of Biological Sciences, Faculty of Medicine, Health and Human Sciences, Macquarie University, Sydney, Australia
| | | | | | | | - Vishal Chaugule
- Laboratory for Turbulence Research in Aerospace and Combustion (LTRAC), Department of Mechanical and Aerospace Engineering, Monash University, Melbourne, Australia
| | - Julio Soria
- Laboratory for Turbulence Research in Aerospace and Combustion (LTRAC), Department of Mechanical and Aerospace Engineering, Monash University, Melbourne, Australia
| | - Hui Xin Ong
- Respiratory Technology, Woolcock Institute of Medical Research, Sydney, Australia
- Macquarie Medical School, Department of Biological Sciences, Faculty of Medicine, Health and Human Sciences, Macquarie University, Sydney, Australia
| | | | - D Traini
- Respiratory Technology, Woolcock Institute of Medical Research, Sydney, Australia
- Macquarie Medical School, Department of Biological Sciences, Faculty of Medicine, Health and Human Sciences, Macquarie University, Sydney, Australia
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12
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Fatehi Z, Doosti A, Jami MS. Oral vaccination with novel Lactococcus lactis mucosal live vector-secreting Brucella lumazine synthase (BLS) protein induces humoral and cellular immune protection against Brucella abortus. Arch Microbiol 2023; 205:122. [PMID: 36939918 PMCID: PMC10025791 DOI: 10.1007/s00203-023-03471-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2023] [Revised: 02/25/2023] [Accepted: 03/07/2023] [Indexed: 03/21/2023]
Abstract
This work aimed to provide recombinant Lactococcus lactis as a potential live vector for the manufacture of recombinant Brucella abortus (rBLS-Usp45). The sequences of the genes were collected from the GenBank database. Using Vaxijen and ccSOL, the proteins' immunogenicity and solubility were evaluated. Mice were given oral vaccinations with recombinant L. lactis. Anti-BLS-specific IgG antibodies were measured by ELISA assay. Cytokine reactions were examined using real-time PCR and the ELISA technique. The BLS protein was chosen for immunogenicity based on the vaccinology screening findings since it had maximum solubility and antigenic values of 99% and 0.75, respectively. The BLS gene, digested at 477 bp, was electrophoretically isolated to demonstrate that the recombinant plasmid was successfully produced. Protein-level antigen expression showed that the target group produced the 18 kDa-sized BLS protein, whereas the control group did not express any proteins. In the sera of mice given the L. lactis-pNZ8148-BLS-Usp45 vaccine 14 days after priming, there was a significant level of BLS-specific IgG1, IgG2a (P < 0.001) compared to the PBS control group. Vaccinated mice showed higher levels of IFN-γ, TNFα, IL-4, and IL-10 in samples obtained on days 14 and 28, after receiving the L. lactis-pNZ8148-BLS-Usp45 and IRBA vaccines (P < 0.001). The inflammatory reaction caused less severe spleen injuries, alveolar edema, lymphocyte infiltration, and morphological damage in the target group's spleen sections. Based on our findings, an oral or subunit-based vaccine against brucellosis might be developed using L. lactis-pNZ8148-BLS-Usp45 as a novel, promising, and safe alternative to the live attenuated vaccines now available.
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Affiliation(s)
- Zahra Fatehi
- Department of Biology, Shahrekord Branch, Islamic Azad University, Shahrekord, Iran
| | - Abbas Doosti
- Biotechnology Research Center, Shahrekord Branch, Islamic Azad University, Shahrekord, Iran.
| | - Mohammad Saeid Jami
- Department of Biology, Shahrekord Branch, Islamic Azad University, Shahrekord, Iran
- Cellular and Molecular Research Center, Basic Health Sciences Research Institute, Shahrekord University of Medical Sciences, Shahrekord, Iran
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13
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Madhavan M, Ritchie AJ, Aboagye J, Jenkin D, Provstgaad-Morys S, Tarbet I, Woods D, Davies S, Baker M, Platt A, Flaxman A, Smith H, Belij-Rammerstorfer S, Wilkins D, Kelly EJ, Villafana T, Green JA, Poulton I, Lambe T, Hill AVS, Ewer KJ, Douglas AD. Tolerability and immunogenicity of an intranasally-administered adenovirus-vectored COVID-19 vaccine: An open-label partially-randomised ascending dose phase I trial. EBioMedicine 2022; 85:104298. [PMID: 36229342 PMCID: PMC9550199 DOI: 10.1016/j.ebiom.2022.104298] [Citation(s) in RCA: 69] [Impact Index Per Article: 34.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2022] [Revised: 09/08/2022] [Accepted: 09/16/2022] [Indexed: 01/06/2023] Open
Abstract
BACKGROUND Intranasal vaccination may induce protective local and systemic immune responses against respiratory pathogens. A number of intranasal SARS-CoV-2 vaccine candidates have achieved protection in pre-clinical challenge models, including ChAdOx1 nCoV-19 (AZD1222, University of Oxford / AstraZeneca). METHODS We performed a single-centre open-label Phase I clinical trial of intranasal vaccination with ChAdOx1 nCoV-19 in healthy adults, using the existing formulation produced for intramuscular administration. Thirty SARS-CoV-2 vaccine-naïve participants were allocated to receive 5 × 109 viral particles (VP, n=6), 2 × 1010 VP (n=12), or 5 × 1010 VP (n=12). Fourteen received second intranasal doses 28 days later. A further 12 received non-study intramuscular mRNA SARS-CoV-2 vaccination between study days 22 and 46. To investigate intranasal ChAdOx1 nCoV-19 as a booster, six participants who had previously received two intramuscular doses of ChAdOx1 nCoV-19 and six who had received two intramuscular doses of BNT162b2 (Pfizer / BioNTech) were given a single intranasal dose of 5 × 1010 VP of ChAdOx1 nCoV-19. Objectives were to assess safety (primary) and mucosal antibody responses (secondary). FINDINGS Reactogenicity was mild or moderate. Antigen-specific mucosal antibody responses to intranasal vaccination were detectable in a minority of participants, rarely exceeding levels seen after SARS-CoV-2 infection. Systemic responses to intranasal vaccination were typically weaker than after intramuscular vaccination with ChAdOx1 nCoV-19. Antigen-specific mucosal antibody was detectable in participants who received an intramuscular mRNA vaccine after intranasal vaccination. Seven participants developed symptomatic SARS-CoV-2 infection. INTERPRETATION This formulation of intranasal ChAdOx1 nCoV-19 showed an acceptable tolerability profile but induced neither a consistent mucosal antibody response nor a strong systemic response. FUNDING AstraZeneca.
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Affiliation(s)
- Meera Madhavan
- Jenner Institute, University of Oxford, Old Road Campus Research Building, Oxford OX3 7BN, UK; Centre for Clinical Vaccinology and Tropical Medicine, University of Oxford, Churchill Hospital, Oxford OX3 7LE, UK
| | - Adam J Ritchie
- Jenner Institute, University of Oxford, Old Road Campus Research Building, Oxford OX3 7BN, UK
| | - Jeremy Aboagye
- Jenner Institute, University of Oxford, Old Road Campus Research Building, Oxford OX3 7BN, UK
| | - Daniel Jenkin
- Jenner Institute, University of Oxford, Old Road Campus Research Building, Oxford OX3 7BN, UK; Centre for Clinical Vaccinology and Tropical Medicine, University of Oxford, Churchill Hospital, Oxford OX3 7LE, UK
| | - Samuel Provstgaad-Morys
- Jenner Institute, University of Oxford, Old Road Campus Research Building, Oxford OX3 7BN, UK
| | - Iona Tarbet
- Jenner Institute, University of Oxford, Old Road Campus Research Building, Oxford OX3 7BN, UK
| | - Danielle Woods
- Jenner Institute, University of Oxford, Old Road Campus Research Building, Oxford OX3 7BN, UK
| | - Sophie Davies
- Jenner Institute, University of Oxford, Old Road Campus Research Building, Oxford OX3 7BN, UK
| | - Megan Baker
- Centre for Clinical Vaccinology and Tropical Medicine, University of Oxford, Churchill Hospital, Oxford OX3 7LE, UK
| | - Abigail Platt
- Centre for Clinical Vaccinology and Tropical Medicine, University of Oxford, Churchill Hospital, Oxford OX3 7LE, UK
| | - Amy Flaxman
- Jenner Institute, University of Oxford, Old Road Campus Research Building, Oxford OX3 7BN, UK
| | - Holly Smith
- Jenner Institute, University of Oxford, Old Road Campus Research Building, Oxford OX3 7BN, UK
| | | | - Deidre Wilkins
- Translational Medicine, Vaccines & Immune Therapies, BioPharmaceuticals R&D, AstraZeneca, 1 Medimmune Way, Gaithersburg, MD 20878, USA
| | - Elizabeth J Kelly
- Translational Medicine, Vaccines & Immune Therapies, BioPharmaceuticals R&D, AstraZeneca, 1 Medimmune Way, Gaithersburg, MD 20878, USA
| | - Tonya Villafana
- Clinical Development, Vaccines & Immune Therapies, BioPharmaceuticals R&D, AstraZeneca, Gaithersburg, MD, USA
| | - Justin A Green
- Clinical Development, Vaccines & Immune Therapies, BioPharmaceuticals R&D, AstraZeneca, Cambridge, UK
| | - Ian Poulton
- Centre for Clinical Vaccinology and Tropical Medicine, University of Oxford, Churchill Hospital, Oxford OX3 7LE, UK
| | - Teresa Lambe
- Jenner Institute, University of Oxford, Old Road Campus Research Building, Oxford OX3 7BN, UK; Oxford Vaccine Group, Centre for Clinical Vaccinology and Tropical Medicine, University of Oxford, Churchill Hospital, Oxford OX3 7LE, UK; China Academy of Medical Sciences Oxford Institute, University of Oxford, NDM Research Building, Old Road Campus, Headington, Oxford OX3 7FZ, UK
| | - Adrian V S Hill
- Jenner Institute, University of Oxford, Old Road Campus Research Building, Oxford OX3 7BN, UK
| | - Katie J Ewer
- Jenner Institute, University of Oxford, Old Road Campus Research Building, Oxford OX3 7BN, UK
| | - Alexander D Douglas
- Jenner Institute, University of Oxford, Old Road Campus Research Building, Oxford OX3 7BN, UK.
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