Fig. 2
Preparation of nanoparticles and their particle size and potential characterization. A Schematic diagram of the preparation of mesoporous silica nanoparticles (MSN), aminated mesoporous silica nanoparticles (A-MSN), miR-loaded mesoporous silica nanoparticles (miR@A-MSN), and miR-loaded mesoporous silica nanoparticles with modified targeting peptides (miR@A-MSN-MG1). B Transmission electron microscope (TEM) images of MSN, A-MSN, A-MSN-MG1 and miR@A-MSN-MG1. C Zeta potential of MSN, A-MSN, A-MSN-MG1 and miR@A-MSN-MG1. D Particle size distribution of MSN, A-MSN, A-MSN-MG1 and miR@A-MSN-MG1