Fig. 18

a Schematic the preparation process for the Pd-based nanozyme. b Uncaging of propargyl-protected 5-FU using the nanozyme. Simultaneous drug release of anticancer agents PP-121 and 5-FU mediated by nanozyme. c Cell viability of U87-MG cells after treatment with nanozyme and prodrugs separately and concurrently. Reprinted from Ref. [197] with permission from Wiley–VCH. Copyright 2017