Llama antibodies could soon be playing a role in the global fight against COVID-19, if clinical trials being conducted by a Belgian biomedical start-up live up to their early promise.
Researchers from the VIB-UGent Center for Medical Biotechnology in Ghent say antibodies extracted from a llama called Winter have blunted the virulence of coronavirus infections, including variants, in laboratory testing.
Unusually small, llama antibodies are able to bind to specific part of the virus's protein spike and "at the moment we're not seeing mutations of a high frequency anywhere near where the binding site is," she said. Researchers expect clinical trials in healthy volunteers, started last week in partnership with Belgian pharmaceutical company UCBAlong with other llamas and members of the camel family, Winter produces versions of conventional antibodies that are smaller, more stable, easier to reproduce and more versatile than those of other mammals, said VIB-UGent group leader Xavier Saelens.
The search for a COVID-19 treatment follows studies from 2016 into llama antibodies to counter the SARS and MERS coronaviruses. France's Sanofi paid 3.9 billion euros for Ablynx, a Ghent-based medical company that specialises in llama antibody research, in 2018.
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