Chinese scientists have mapped out the high-definition spike protein structure of the Omicron variant of the virus that caused the COVID-19 pandemic.
The structure, under microscopy, revealed how Omicron escaped previous antibody therapeutics, said the study published recently in the journal Cell Reports.
The high number of mutations in Omicron’s spike protein was considered responsible for the broad immune evasion from existing vaccines and antibody drugs.
The researchers from ShanghaiTech University, Nanjing University, and Chongqing Medical University had said.
They compared the structures of Omicron, Delta, and wild-type spikes bound to a patient-derived antibody fragment called 510A5, which also provided direct evidence of where antibody binding and neutralisation were weakened by the Omicron mutations, according to the study.
The findings illustrated how the mutations led to antibody evasion, said the researchers.
Also, they analysed the structure of other antibodies previously reported as capable of neutralising Omicron, revealing their structures as more insusceptible to Omicron variants.
Therefore, the researchers suggested that cocktail antibodies might be more effective clinically in fighting COVID-19. (Xinhua/NAN)
