Robust induction of functional humoral response by a plant-derived Coronavirus-like particle vaccine candidate for COVID-19

Abstract Despite the success of existing COVID-19 vaccine platforms, the persistent limitations in global deployment of vaccines and waning immunity exhibited by many of the currently deployed vaccine platforms have led to perpetual outbreaks of SARS-CoV-2 variants of concern. Thus, there is an urge...

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Main Authors: Paulina Kaplonek, Deniz Cizmeci, Jessica Shih-Lu Lee, Sally A. Shin, Stephanie Fischinger, Philipe Gobeil, Stéphane Pillet, Nathalie Charland, Brian J. Ward, Galit Alter
Format: Article
Language:English
Published: Nature Portfolio 2023-02-01
Series:npj Vaccines
Online Access:https://doi.org/10.1038/s41541-023-00612-2
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author Paulina Kaplonek
Deniz Cizmeci
Jessica Shih-Lu Lee
Sally A. Shin
Stephanie Fischinger
Philipe Gobeil
Stéphane Pillet
Nathalie Charland
Brian J. Ward
Galit Alter
author_facet Paulina Kaplonek
Deniz Cizmeci
Jessica Shih-Lu Lee
Sally A. Shin
Stephanie Fischinger
Philipe Gobeil
Stéphane Pillet
Nathalie Charland
Brian J. Ward
Galit Alter
author_sort Paulina Kaplonek
collection DOAJ
description Abstract Despite the success of existing COVID-19 vaccine platforms, the persistent limitations in global deployment of vaccines and waning immunity exhibited by many of the currently deployed vaccine platforms have led to perpetual outbreaks of SARS-CoV-2 variants of concern. Thus, there is an urgent need to develop new durable vaccine candidates, to expand the global vaccine pipeline, and provide safe and effective solutions for every country worldwide. Here we deeply profiled the functional humoral response induced by two doses of AS03-adjuvanted and non-adjuvanted plant-derived Coronavirus-like particle (CoVLP) vaccine candidate from the phase 1 clinical trial, at peak immunogenicity and six months post-vaccination. AS03-adjuvanted CoVLP induced robust and durable SARS-CoV-2 specific humoral immunity, marked by strong IgG1antibody responses, potent FcγR binding, and antibody effector function. Contrary to a decline in neutralizing antibody titers, the FcγR2A-receptor binding capacity and antibody-mediated effector functions, such as opsonophagocytosis, remained readily detectable for at least six months.
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spelling doaj.art-d55dbfe42ce74d4cbb08ac3c06582bd42023-12-03T09:27:50ZengNature Portfolionpj Vaccines2059-01052023-02-018111110.1038/s41541-023-00612-2Robust induction of functional humoral response by a plant-derived Coronavirus-like particle vaccine candidate for COVID-19Paulina Kaplonek0Deniz Cizmeci1Jessica Shih-Lu Lee2Sally A. Shin3Stephanie Fischinger4Philipe Gobeil5Stéphane Pillet6Nathalie Charland7Brian J. Ward8Galit Alter9Ragon Institute of MGH, MIT, and HarvardRagon Institute of MGH, MIT, and HarvardRagon Institute of MGH, MIT, and HarvardRagon Institute of MGH, MIT, and HarvardRagon Institute of MGH, MIT, and HarvardMedicago Inc.Medicago Inc.Medicago Inc.Medicago Inc.Ragon Institute of MGH, MIT, and HarvardAbstract Despite the success of existing COVID-19 vaccine platforms, the persistent limitations in global deployment of vaccines and waning immunity exhibited by many of the currently deployed vaccine platforms have led to perpetual outbreaks of SARS-CoV-2 variants of concern. Thus, there is an urgent need to develop new durable vaccine candidates, to expand the global vaccine pipeline, and provide safe and effective solutions for every country worldwide. Here we deeply profiled the functional humoral response induced by two doses of AS03-adjuvanted and non-adjuvanted plant-derived Coronavirus-like particle (CoVLP) vaccine candidate from the phase 1 clinical trial, at peak immunogenicity and six months post-vaccination. AS03-adjuvanted CoVLP induced robust and durable SARS-CoV-2 specific humoral immunity, marked by strong IgG1antibody responses, potent FcγR binding, and antibody effector function. Contrary to a decline in neutralizing antibody titers, the FcγR2A-receptor binding capacity and antibody-mediated effector functions, such as opsonophagocytosis, remained readily detectable for at least six months.https://doi.org/10.1038/s41541-023-00612-2
spellingShingle Paulina Kaplonek
Deniz Cizmeci
Jessica Shih-Lu Lee
Sally A. Shin
Stephanie Fischinger
Philipe Gobeil
Stéphane Pillet
Nathalie Charland
Brian J. Ward
Galit Alter
Robust induction of functional humoral response by a plant-derived Coronavirus-like particle vaccine candidate for COVID-19
npj Vaccines
title Robust induction of functional humoral response by a plant-derived Coronavirus-like particle vaccine candidate for COVID-19
title_full Robust induction of functional humoral response by a plant-derived Coronavirus-like particle vaccine candidate for COVID-19
title_fullStr Robust induction of functional humoral response by a plant-derived Coronavirus-like particle vaccine candidate for COVID-19
title_full_unstemmed Robust induction of functional humoral response by a plant-derived Coronavirus-like particle vaccine candidate for COVID-19
title_short Robust induction of functional humoral response by a plant-derived Coronavirus-like particle vaccine candidate for COVID-19
title_sort robust induction of functional humoral response by a plant derived coronavirus like particle vaccine candidate for covid 19
url https://doi.org/10.1038/s41541-023-00612-2
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