Figure 1. Receptor-Mediated Transcytosis of ProSNAs Across the Blood-Brain Barrier.
Cartoon representation of β-Gal ProSNAs being shuttled across an endothelial cell to the brain via the transferrin receptor. The surface of β-Gal is decorated with a shell of transferrin-specific aptamers covalently conjugated to surface lysine residues, resulting in a protein spherical nucleic acid (ProSNA). The representation was adapted from PDB ID 1PX3.