Immunogenic and efficacious SARS-CoV-2 vaccine based on resistin-trimerized spike antigen SmT1 and SLA archaeosome adjuvant

Abstract The huge worldwide demand for vaccines targeting SARS-CoV-2 has necessitated the continued development of novel improved formulations capable of reducing the burden of the COVID-19 pandemic. Herein, we evaluated novel protein subunit vaccine formulations containing a resistin-trimerized spi...

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Autores principales: Bassel Akache, Tyler M. Renner, Anh Tran, Lise Deschatelets, Renu Dudani, Blair A. Harrison, Diana Duque, Julie Haukenfrers, Martin A. Rossotti, Francis Gaudreault, Usha D. Hemraz, Edmond Lam, Sophie Régnier, Wangxue Chen, Christian Gervais, Matthew Stuible, Lakshmi Krishnan, Yves Durocher, Michael J. McCluskie
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Publicado: Nature Portfolio 2021
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spelling oai:doaj.org-article:9618e29b6e8e4f74b75065bea762626c2021-11-14T12:18:38ZImmunogenic and efficacious SARS-CoV-2 vaccine based on resistin-trimerized spike antigen SmT1 and SLA archaeosome adjuvant10.1038/s41598-021-01363-72045-2322https://doaj.org/article/9618e29b6e8e4f74b75065bea762626c2021-11-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-01363-7https://doaj.org/toc/2045-2322Abstract The huge worldwide demand for vaccines targeting SARS-CoV-2 has necessitated the continued development of novel improved formulations capable of reducing the burden of the COVID-19 pandemic. Herein, we evaluated novel protein subunit vaccine formulations containing a resistin-trimerized spike antigen, SmT1. When combined with sulfated lactosyl archaeol (SLA) archaeosome adjuvant, formulations induced robust antigen-specific humoral and cellular immune responses in mice. Antibodies had strong neutralizing activity, preventing viral spike binding and viral infection. In addition, the formulations were highly efficacious in a hamster challenge model reducing viral load and body weight loss even after a single vaccination. The antigen-specific antibodies generated by our vaccine formulations had stronger neutralizing activity than human convalescent plasma, neutralizing the spike proteins of the B.1.1.7 and B.1.351 variants of concern. As such, our SmT1 antigen along with SLA archaeosome adjuvant comprise a promising platform for the development of efficacious protein subunit vaccine formulations for SARS-CoV-2.Bassel AkacheTyler M. RennerAnh TranLise DeschateletsRenu DudaniBlair A. HarrisonDiana DuqueJulie HaukenfrersMartin A. RossottiFrancis GaudreaultUsha D. HemrazEdmond LamSophie RégnierWangxue ChenChristian GervaisMatthew StuibleLakshmi KrishnanYves DurocherMichael J. McCluskieNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-17 (2021)
institution DOAJ
collection DOAJ
language EN
topic Medicine
R
Science
Q
spellingShingle Medicine
R
Science
Q
Bassel Akache
Tyler M. Renner
Anh Tran
Lise Deschatelets
Renu Dudani
Blair A. Harrison
Diana Duque
Julie Haukenfrers
Martin A. Rossotti
Francis Gaudreault
Usha D. Hemraz
Edmond Lam
Sophie Régnier
Wangxue Chen
Christian Gervais
Matthew Stuible
Lakshmi Krishnan
Yves Durocher
Michael J. McCluskie
Immunogenic and efficacious SARS-CoV-2 vaccine based on resistin-trimerized spike antigen SmT1 and SLA archaeosome adjuvant
description Abstract The huge worldwide demand for vaccines targeting SARS-CoV-2 has necessitated the continued development of novel improved formulations capable of reducing the burden of the COVID-19 pandemic. Herein, we evaluated novel protein subunit vaccine formulations containing a resistin-trimerized spike antigen, SmT1. When combined with sulfated lactosyl archaeol (SLA) archaeosome adjuvant, formulations induced robust antigen-specific humoral and cellular immune responses in mice. Antibodies had strong neutralizing activity, preventing viral spike binding and viral infection. In addition, the formulations were highly efficacious in a hamster challenge model reducing viral load and body weight loss even after a single vaccination. The antigen-specific antibodies generated by our vaccine formulations had stronger neutralizing activity than human convalescent plasma, neutralizing the spike proteins of the B.1.1.7 and B.1.351 variants of concern. As such, our SmT1 antigen along with SLA archaeosome adjuvant comprise a promising platform for the development of efficacious protein subunit vaccine formulations for SARS-CoV-2.
format article
author Bassel Akache
Tyler M. Renner
Anh Tran
Lise Deschatelets
Renu Dudani
Blair A. Harrison
Diana Duque
Julie Haukenfrers
Martin A. Rossotti
Francis Gaudreault
Usha D. Hemraz
Edmond Lam
Sophie Régnier
Wangxue Chen
Christian Gervais
Matthew Stuible
Lakshmi Krishnan
Yves Durocher
Michael J. McCluskie
author_facet Bassel Akache
Tyler M. Renner
Anh Tran
Lise Deschatelets
Renu Dudani
Blair A. Harrison
Diana Duque
Julie Haukenfrers
Martin A. Rossotti
Francis Gaudreault
Usha D. Hemraz
Edmond Lam
Sophie Régnier
Wangxue Chen
Christian Gervais
Matthew Stuible
Lakshmi Krishnan
Yves Durocher
Michael J. McCluskie
author_sort Bassel Akache
title Immunogenic and efficacious SARS-CoV-2 vaccine based on resistin-trimerized spike antigen SmT1 and SLA archaeosome adjuvant
title_short Immunogenic and efficacious SARS-CoV-2 vaccine based on resistin-trimerized spike antigen SmT1 and SLA archaeosome adjuvant
title_full Immunogenic and efficacious SARS-CoV-2 vaccine based on resistin-trimerized spike antigen SmT1 and SLA archaeosome adjuvant
title_fullStr Immunogenic and efficacious SARS-CoV-2 vaccine based on resistin-trimerized spike antigen SmT1 and SLA archaeosome adjuvant
title_full_unstemmed Immunogenic and efficacious SARS-CoV-2 vaccine based on resistin-trimerized spike antigen SmT1 and SLA archaeosome adjuvant
title_sort immunogenic and efficacious sars-cov-2 vaccine based on resistin-trimerized spike antigen smt1 and sla archaeosome adjuvant
publisher Nature Portfolio
publishDate 2021
url https://doaj.org/article/9618e29b6e8e4f74b75065bea762626c
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