The principles of biomimicry and bioinspiration have been used to design and to engineer drug-delivery technologies that reproduce or recapitulate biological materials, for what pertains to not only their structure and chemistry but also, more importantly, their functions. In drug delivery, surface recognition and nanoscale interactions between materials and biological entities are key to the success of the delivery strategy, and the use of biological building blocks such as membrane proteins has been proposed as a way to convey targeting and shielding moieties simultaneously.123 One can only hope that the recent events and global attention that viruses are capturing in the scientific world will spur a renewed interest in finding ways to adapt viral features and mechanisms of action to the world of NPs. Increased focus in this field would be useful to create virus-like NPs able to circulate in the blood system, overcoming the endothelial barrier, and to deliver their therapeutic payload with high efficiency.124