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-Structure paper
Title | Rapid identification of neutralizing antibodies against SARS-CoV-2 variants by mRNA display. |
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Journal, issue, pages | Cell Rep, Vol. 38, Issue 6, Page 110348, Year 2022 |
Publish date | Feb 8, 2022 |
Authors | Shiho Tanaka / C Anders Olson / Christopher O Barnes / Wendy Higashide / Marcos Gonzalez / Justin Taft / Ashley Richardson / Marta Martin-Fernandez / Dusan Bogunovic / Priyanthi N P Gnanapragasam / Pamela J Bjorkman / Patricia Spilman / Kayvan Niazi / Shahrooz Rabizadeh / Patrick Soon-Shiong / |
PubMed Abstract | The increasing prevalence of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) variants with the ability to escape existing humoral protection conferred by previous infection and/or ...The increasing prevalence of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) variants with the ability to escape existing humoral protection conferred by previous infection and/or immunization necessitates the discovery of broadly reactive neutralizing antibodies (nAbs). Utilizing mRNA display, we identify a set of antibodies against SARS-CoV-2 spike (S) proteins and characterize the structures of nAbs that recognize epitopes in the S1 subunit of the S glycoprotein. These structural studies reveal distinct binding modes for several antibodies, including the targeting of rare cryptic epitopes in the receptor-binding domain (RBD) of S that interact with angiotensin-converting enzyme 2 (ACE2) to initiate infection, as well as the S1 subdomain 1. Further, we engineer a potent ACE2-blocking nAb to sustain binding to S RBD with the E484K and L452R substitutions found in multiple SARS-CoV-2 variants. We demonstrate that mRNA display is an approach for the rapid identification of nAbs that can be used in combination to combat emerging SARS-CoV-2 variants. |
External links | Cell Rep / PubMed:35114110 / PubMed Central |
Methods | EM (single particle) / X-ray diffraction |
Resolution | 2.9 - 4.9 Å |
Structure data | EMDB-24786, PDB-7s0c: EMDB-24787, PDB-7s0d: EMDB-24788, PDB-7s0e: PDB-7s0b: |
Chemicals | ChemComp-NAG: ChemComp-HOH: |
Source |
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Keywords | VIRAL PROTEIN/IMMUNE SYSTEM / Antibody / SARS-CoV-2 / COVID-19 / mRNA Display / ANTIVIRAL PROTEIN / VIRAL PROTEIN-IMMUNE SYSTEM complex / Spike glycoprotein |