Figure 5. AFM image of G5 dendriplexes prepared for 20 minutes attacked by RNase enzyme.

(A) AFM image of hexagonal G5 dendriplexes prepared by mixing of G5 dendrimers with 0.7 µg of anti-GAPDH siRNA at N/P ratio of 2/1 for 20 minutes at room temperature before loading onto the surface of freshly cleaved mica. AFM images of G5 dendriplexes after incubation with RNase V1 enzyme for 1–60 minutes (B–F) shows separation of the adsorbed dendriplexes and degradation of the complexed siRNA molecules (dark spots) that increased with the increase in incubation time. Scale bar in these images is 200 nm and the Z scale is 17 nm.