Magnet-Bead Based MicroRNA Delivery System to Modify CD133⁺ Stem Cells

Figure 1

Schematic structure of superparamagnetic transfection complexes. Complexes are composed of a streptavidin-coated magnetic iron oxide nanoparticle (MNP) and biotinylated polyethylenimine (PEI), which condenses miR through electrostatic interactions.