Figure 4.
(A) CLSM images of the HepG-2 cancer cells after treatment with PDA@hm@ICG@GOx nanoparticles for 0.5 h, 2 h and 4 h. Cells were stained with Hoechst 33342 and LysoTracker Green, respectively (Scale bar: 50 μm). (B) Relative viabilities of HepG-2 cells after incubation with PDA or PDA@hm nanoparticles for 24 h or 48 h, respectively. (C) Apoptosis rates of HepG-2 cells treated with different formulations determined by flow cytometric analysis. (D) Relative apoptosis rates after different formulations treatments. ***p < 0.001.