Researchers presented the direct plasmid transfection method for SARS-CoV-2 virus-like particle production in insect cells and applied the VLPs to evaluate the efficacy of monoclonal antibodies and vaccinated donor sera.
In a new study, different signal peptides, baculovirus transfer vectors, cell lines, infection techniques, and formulation buffers were investigated with the purpose of building a scalable bioprocess to generate high-quality S protein for incorporation in a virosome-based COVID-19 vaccine candidate.