Cited by 117SARS-CoV-2 and COVID-19 ResearchSARS-CoV-2 detection and testingAnimal Virus Infections Studies

Comparison of Four SARS-CoV-2 Neutralization Assays

Open access
Riepler, Lydia, Rössler, Annika, Falch, Albert, Volland, André, Borena, Wegene, von Laer, Dorothee, Kimpel, Janine·2020·Vaccines

Abstract

Neutralizing antibodies are a major correlate of protection for many viruses including the novel coronavirus SARS-CoV-2. Thus, vaccine candidates should potently induce neutralizing antibodies to render effective protection from infection. A variety of in vitro assays for the detection of SARS-CoV-2 neutralizing antibodies has been described. However, validation of the different assays against each other is important to allow comparison of different studies. Here, we compared four different SARS-CoV-2 neutralization assays using the same set of patient samples. Two assays used replication competent SARS-CoV-2, a focus forming assay and a TCID50-based assay, while the other two assays used replication defective lentiviral or vesicular stomatitis virus (VSV)-based particles pseudotyped with SARS-CoV-2 spike. All assays were robust and produced highly reproducible neutralization titers. Titers of neutralizing antibodies correlated well between the different assays and with the titers of SARS-CoV-2 S-protein binding antibodies detected in an ELISA. Our study showed that commonly used SARS-CoV-2 neutralization assays are robust and that results obtained with different assays are comparable.

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Crossref · 10.3390/vaccines9010013

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  • The VSV pseudotype system faithfully mimics key aspects of SARS-CoV-2 entry, including ACE2 engagement, TMPRSS2 priming, and antibody-mediated neutralization.

    “This system faithfully mimics key aspects of SARS-CoV-2 entry into cells, including ACE2 engagement, priming of the S protein by TMPRSS2, and antibody-mediated neutralization (Hoffmann et al., 2020b; Riepler et al., 2020; Schmidt et al., 2020).”

    From SARS-CoV-2 variants B.1.351 and P.1 escape from neutralizing antibodies (2021) · cites this paper as Riepler et al., 2020

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Authors
Riepler, L., Rössler, A., Falch, A., Volland, A., Borena, W., von Laer, D., & Kimpel, J.
Affiliations
  • Innsbruck Medical University (AT)
  • Department of Hygiene, Microbiology and Public Health, Institute of Virology, Medical University of Innsbruck, 6020 Innsbruck, Austria
Corresponding author
Kimpel, Janine
Venue
Vaccines
Publisher
MDPI AG
Published
2020-12-28
Volume
9
Issue
1
Pages
13
ISSN
2076-393X (ISSN-L)
OpenAlex
W3114250596
Cited by
117
References
26
Citations by year
2026: 2 · 2025: 10 · 2024: 17 · 2023: 19 · 2022: 37 · 2021: 32
FWCI
2.89
Type
journal article
Language
en
Open access
Locations
  • Vaccines (publishedVersion, cc-by)
  • Europe PMC (PubMed Central) (publishedVersion, other-oa)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Topics
  • Health Sciences › Medicine › Infectious Diseases › SARS-CoV-2 and COVID-19 Research
  • Health Sciences › Medicine › Infectious Diseases › SARS-CoV-2 detection and testing
  • Life Sciences › Agricultural and Biological Sciences › Animal Science and Zoology › Animal Virus Infections Studies
Keywords
SARS-CoV-2, neutralizing antibodies, assay validation, TCID50, vaccine-induced immunity, assay reproducibility

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