NGF and pancreatic neoplasm: In a further example, Figure 8D, Au nanoclusters (NCs) modified with GSH as cell‐permeating agent and thiolated oligoarginine siRNA‐binding sites were used as carrier of siRNA silencing the gene expressing the nerve growth factor (NGF) overexpressed in pancreatic cancer cells, Panc‐1.[161] Electrostatic binding of the siRNA to the oligoarginine units facilitated the permeation of the siRNA into the Panc‐1 cells, Figure 8E.