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TitleThree SARS-CoV-2 antibodies provide broad and synergistic neutralization against variants of concern, including Omicron.
Journal, issue, pagesCell Rep, Vol. 39, Issue 8, Page 110862, Year 2022
Publish dateMay 24, 2022
AuthorsSiling Wang / Hui Sun / Yali Zhang / Lunzhi Yuan / Yizhen Wang / Tianying Zhang / Shaojuan Wang / Jinlei Zhang / Hai Yu / Hualong Xiong / Zimin Tang / Liqin Liu / Yang Huang / Xiuting Chen / Tingting Li / Dong Ying / Chang Liu / Zihao Chen / Quan Yuan / Jun Zhang / Tong Cheng / Shaowei Li / Yi Guan / Qingbing Zheng / Zizheng Zheng / Ningshao Xia /
PubMed AbstractThe rapidly spreading Omicron variant is highly resistant to vaccines, convalescent sera, and neutralizing antibodies (nAbs), highlighting the urgent need for potent therapeutic nAbs. Here, a panel ...The rapidly spreading Omicron variant is highly resistant to vaccines, convalescent sera, and neutralizing antibodies (nAbs), highlighting the urgent need for potent therapeutic nAbs. Here, a panel of human nAbs from severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) convalescent patients show diverse neutralization against Omicron, of which XMA01 and XMA04 maintain nanomolar affinities and excellent neutralization (half maximal inhibitory concentration [IC50]: ∼20 ng/mL). nAb XMA09 shows weak but unattenuated neutralization against all variants of concern (VOCs) as well as SARS-CoV. Structural analysis reveals that the above three antibodies could synergistically bind to the receptor-binding domains (RBDs) of both wild-type and Omicron spikes and defines the critical determinants for nAb-mediated broad neutralizations. Three nAbs confer synergistic neutralization against Omicron, resulting from the inter-antibody interaction between XMA04 and XMA01(or XMA09). Furthermore, the XMA01/XMA04 cocktail provides synergistic protection against Beta and Omicron variant infections in hamsters. In summary, our results provide insights for the rational design of antibody cocktail therapeutics or universal vaccines against Omicron.
External linksCell Rep / PubMed:35594869 / PubMed Central
MethodsEM (single particle)
Resolution3.42 - 4.23 Å
Structure data

32516

7whz

EMDB-32516, PDB-7whz:
SARS-CoV-2 spike protein in complex with three human neutralizing antibodies
Method: EM (single particle) / Resolution: 3.42 Å

32517

7wi0

EMDB-32517, PDB-7wi0:
SARS-CoV-2 Omicron variant spike in complex with three human neutralizing antibodies
Method: EM (single particle) / Resolution: 3.82 Å

EMDB-32518: Omicron spike in complex with human neutralizing antibody XMA01
Method: EM (single particle) / Resolution: 4.23 Å

Chemicals

ChemComp-NAG:
2-acetamido-2-deoxy-beta-D-glucopyranose

Source
  • severe acute respiratory syndrome coronavirus 2
  • homo sapiens (human)
KeywordsVIRAL PROTEIN / SARS-CoV-2 / Omicron / Spike protein / Neutralizing antibody / Cryo-EM

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