Neutralization of SARS-CoV-2 Variants by rVSV-ΔG-Spike-Elicited Human Sera

The emergence of rapidly spreading variants of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) poses a major challenge to the ability of vaccines and therapeutic antibodies to provide immunity. These variants contain mutations of specific amino acids that might impede vaccine efficacy....

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Main Authors: Yfat Yahalom-Ronen, Noam Erez, Morly Fisher, Hadas Tamir, Boaz Politi, Hagit Achdout, Sharon Melamed, Itai Glinert, Shay Weiss, Inbar Cohen-Gihon, Ofir Israeli, Marina Izak, Michal Mandelboim, Yoseph Caraco, Noa Madar-Balakirski, Adva Mechaly, Eilat Shinar, Ran Zichel, Daniel Cohen, Adi Beth-Din, Anat Zvi, Hadar Marcus, Tomer Israely, Nir Paran
Format: Article
Language:English
Published: MDPI AG 2022-02-01
Series:Vaccines
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Online Access:https://www.mdpi.com/2076-393X/10/2/291
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author Yfat Yahalom-Ronen
Noam Erez
Morly Fisher
Hadas Tamir
Boaz Politi
Hagit Achdout
Sharon Melamed
Itai Glinert
Shay Weiss
Inbar Cohen-Gihon
Ofir Israeli
Marina Izak
Michal Mandelboim
Yoseph Caraco
Noa Madar-Balakirski
Adva Mechaly
Eilat Shinar
Ran Zichel
Daniel Cohen
Adi Beth-Din
Anat Zvi
Hadar Marcus
Tomer Israely
Nir Paran
author_facet Yfat Yahalom-Ronen
Noam Erez
Morly Fisher
Hadas Tamir
Boaz Politi
Hagit Achdout
Sharon Melamed
Itai Glinert
Shay Weiss
Inbar Cohen-Gihon
Ofir Israeli
Marina Izak
Michal Mandelboim
Yoseph Caraco
Noa Madar-Balakirski
Adva Mechaly
Eilat Shinar
Ran Zichel
Daniel Cohen
Adi Beth-Din
Anat Zvi
Hadar Marcus
Tomer Israely
Nir Paran
author_sort Yfat Yahalom-Ronen
collection DOAJ
description The emergence of rapidly spreading variants of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) poses a major challenge to the ability of vaccines and therapeutic antibodies to provide immunity. These variants contain mutations of specific amino acids that might impede vaccine efficacy. BriLife<sup>®</sup> (rVSV-ΔG-spike) is a newly developed SARS-CoV-2 vaccine candidate currently in phase II clinical trials. It is based on a replication-competent vesicular stomatitis virus (VSV) platform. The rVSV-ΔG-spike contains several spontaneously acquired spike mutations that correspond to SARS-CoV-2 variants’ mutations. We show that human sera from BriLife<sup>®</sup> vaccinees preserve comparable neutralization titers towards alpha, gamma, and delta variants and show less than a three-fold reduction in the neutralization capacity of beta and omicron compared to the original virus. Taken together, we show that human sera from BriLife<sup>®</sup> vaccinees overall maintain a neutralizing antibody response against all tested variants. We suggest that BriLife<sup>®</sup>-acquired mutations may prove advantageous against future SARS-CoV-2 VOCs.
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spelling doaj.art-79c4459068c048c982dd0dd04b24ee332023-11-23T22:26:40ZengMDPI AGVaccines2076-393X2022-02-0110229110.3390/vaccines10020291Neutralization of SARS-CoV-2 Variants by rVSV-ΔG-Spike-Elicited Human SeraYfat Yahalom-Ronen0Noam Erez1Morly Fisher2Hadas Tamir3Boaz Politi4Hagit Achdout5Sharon Melamed6Itai Glinert7Shay Weiss8Inbar Cohen-Gihon9Ofir Israeli10Marina Izak11Michal Mandelboim12Yoseph Caraco13Noa Madar-Balakirski14Adva Mechaly15Eilat Shinar16Ran Zichel17Daniel Cohen18Adi Beth-Din19Anat Zvi20Hadar Marcus21Tomer Israely22Nir Paran23Department of Infectious Diseases, Israel Institute for Biological Research, Ness Ziona 7410001, IsraelDepartment of Infectious Diseases, Israel Institute for Biological Research, Ness Ziona 7410001, IsraelDepartment of Infectious Diseases, Israel Institute for Biological Research, Ness Ziona 7410001, IsraelDepartment of Infectious Diseases, Israel Institute for Biological Research, Ness Ziona 7410001, IsraelDepartment of Infectious Diseases, Israel Institute for Biological Research, Ness Ziona 7410001, IsraelDepartment of Infectious Diseases, Israel Institute for Biological Research, Ness Ziona 7410001, IsraelDepartment of Infectious Diseases, Israel Institute for Biological Research, Ness Ziona 7410001, IsraelDepartment of Infectious Diseases, Israel Institute for Biological Research, Ness Ziona 7410001, IsraelDepartment of Infectious Diseases, Israel Institute for Biological Research, Ness Ziona 7410001, IsraelDepartment of Biochemistry and Molecular Genetics, Israel Institute for Biological Research, Ness Ziona 7410001, IsraelDepartment of Biochemistry and Molecular Genetics, Israel Institute for Biological Research, Ness Ziona 7410001, IsraelMagen David Adom, National Blood Services, Ramat Gan 52621, IsraelSheba Medical Center, Central Virology Laboratory, Ministry of Health, Tel Hashomer, Ramat Gan 52621, IsraelHadassah Medical Center, Jerusalem 91120, IsraelDepartment of Pharmacology, Israel Institute for Biological Research, Ness Ziona 7410001, IsraelDepartment of Infectious Diseases, Israel Institute for Biological Research, Ness Ziona 7410001, IsraelMagen David Adom, National Blood Services, Ramat Gan 52621, IsraelDepartment of Biotechnology, Israel Institute for Biological Research, Ness Ziona 7410001, IsraelSchool of Public Health, Sackler Faculty of Medicine, Tel-Aviv University, Tel-Aviv 69978, IsraelDepartment of Biochemistry and Molecular Genetics, Israel Institute for Biological Research, Ness Ziona 7410001, IsraelDepartment of Biochemistry and Molecular Genetics, Israel Institute for Biological Research, Ness Ziona 7410001, IsraelDepartment of Biotechnology, Israel Institute for Biological Research, Ness Ziona 7410001, IsraelDepartment of Infectious Diseases, Israel Institute for Biological Research, Ness Ziona 7410001, IsraelDepartment of Infectious Diseases, Israel Institute for Biological Research, Ness Ziona 7410001, IsraelThe emergence of rapidly spreading variants of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) poses a major challenge to the ability of vaccines and therapeutic antibodies to provide immunity. These variants contain mutations of specific amino acids that might impede vaccine efficacy. BriLife<sup>®</sup> (rVSV-ΔG-spike) is a newly developed SARS-CoV-2 vaccine candidate currently in phase II clinical trials. It is based on a replication-competent vesicular stomatitis virus (VSV) platform. The rVSV-ΔG-spike contains several spontaneously acquired spike mutations that correspond to SARS-CoV-2 variants’ mutations. We show that human sera from BriLife<sup>®</sup> vaccinees preserve comparable neutralization titers towards alpha, gamma, and delta variants and show less than a three-fold reduction in the neutralization capacity of beta and omicron compared to the original virus. Taken together, we show that human sera from BriLife<sup>®</sup> vaccinees overall maintain a neutralizing antibody response against all tested variants. We suggest that BriLife<sup>®</sup>-acquired mutations may prove advantageous against future SARS-CoV-2 VOCs.https://www.mdpi.com/2076-393X/10/2/291COVID-19SARS-CoV-2variantsVOCvaccineBriLife<sup>®</sup>
spellingShingle Yfat Yahalom-Ronen
Noam Erez
Morly Fisher
Hadas Tamir
Boaz Politi
Hagit Achdout
Sharon Melamed
Itai Glinert
Shay Weiss
Inbar Cohen-Gihon
Ofir Israeli
Marina Izak
Michal Mandelboim
Yoseph Caraco
Noa Madar-Balakirski
Adva Mechaly
Eilat Shinar
Ran Zichel
Daniel Cohen
Adi Beth-Din
Anat Zvi
Hadar Marcus
Tomer Israely
Nir Paran
Neutralization of SARS-CoV-2 Variants by rVSV-ΔG-Spike-Elicited Human Sera
Vaccines
COVID-19
SARS-CoV-2
variants
VOC
vaccine
BriLife<sup>®</sup>
title Neutralization of SARS-CoV-2 Variants by rVSV-ΔG-Spike-Elicited Human Sera
title_full Neutralization of SARS-CoV-2 Variants by rVSV-ΔG-Spike-Elicited Human Sera
title_fullStr Neutralization of SARS-CoV-2 Variants by rVSV-ΔG-Spike-Elicited Human Sera
title_full_unstemmed Neutralization of SARS-CoV-2 Variants by rVSV-ΔG-Spike-Elicited Human Sera
title_short Neutralization of SARS-CoV-2 Variants by rVSV-ΔG-Spike-Elicited Human Sera
title_sort neutralization of sars cov 2 variants by rvsv δg spike elicited human sera
topic COVID-19
SARS-CoV-2
variants
VOC
vaccine
BriLife<sup>®</sup>
url https://www.mdpi.com/2076-393X/10/2/291
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