Second career of a biosynthetic enzyme: Lumazine synthase as a virus-like nanoparticle in vaccine development
Rudolf Ladenstein | Ekaterina Morgunova
Naturally occurring and computationally ab initio designed protein cages can now be considered as extremely suitable materials for new developments in nanotechnology. Via self-assembly from single identical or non-identical protomers large oligomeric particles can be formed. Virus-like particles have today found a number of quite successful applications in the development of new vaccines. Complex chimeric nanoparticles can serve as suitable platforms for the presentation of natural or designed antigens to the immune system of the host. The scaffolds can be cage forming highly symmetric biological macromolecules like lumazine synthase or symmetric self-assembling virus-like particles generated by computational ab initio design. Symmetric nanoparticle carriers display a structurally ordered array of immunogens. This feature can lead to a more favorable interaction with B-cell receptors, in comparison to the administration of single recombinant immunogens. Several pre-clinical animal studies and clinical studies have recently pointed out the efficiency of nanoparticle antigens produced recombinantly in creating strong immune responses against infectious diseases like HIV, Malaria, Borrelia, Influenza.
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