Fig. 3

The in vitro chemo-photothermal therapy. a The fluorescent images of MCF-7 cells treated with PBS, DOX, Au@ZIF-8, and Au@ZIF-8/DOX without laser treatment and live/dead staining after laser treatment. b The schematic illustration of in vitro PTT. c The cell viability of MCF-7 cells treated with different formulations (PBS, DOX, Au@ZIF-8, and Au@ZIF-8/DOX) at various concentrations with or without 808 nm laser. Data was represented as mean ± SD (n = 4). d The corresponding fluorescent images of live-dead staining cells for different groups. Scar bar: 100 μm