High number of Omicron mutations render antibodies ineffective - study
The highly contagious COVID-19 Omicron variant has a large number of uniquely specific mutations that allow it to evade pre-existing antibodies in the human body, accounting for its high rate of infection, new research carried out by the University of Minnesota has found.
The peer-reviewed study titled “Omicron SARS-CoV-2 variant: Unique features and their impact on pre-existing antibodies” was first published in the
Journal of Autoimmunity and was produced by Kamlendra Singh, a professor in the University of Missouri College of Veterinary Medicine and assistant director of the college’s Molecular Interactions Core and Bond Life Sciences Center investigator.
The research team set out to gather data on the mutations found in the spike protein (S-protein) of the Omicron variant. An S-protein refers to a large structure projecting from the surface of the virus’s outermost layer, and they are most commonly associated with all forms of coronavirus cells.
The research team found an unprecedented number of mutations in the Omicron S-protein. They analyzed the available sequences of the virus along with the structural data on the spike protein in order to understand the possible impact that the high number of mutations could have on the binding of antibodies to the virus.
Antibodies allow the human body to fight off viruses that enter the system, preventing them from entering the immune system. While earlier in the COVID-19 pandemic it was thought that being infected with COVID-19, or being vaccinated against it, would provide enough antibodies to prevent reinfection, the Omicron variant has proved otherwise, as high amounts of people are being re-infected, or infected despite being
fully vaccinated.
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