Fig. 6From: Mitochondria-targeting graphene oxide nanocomposites for fluorescence imaging-guided synergistic phototherapy of drug-resistant osteosarcomaCellular mechanism of synergistic phototherapy with TPP-PPG@ICG. MG63/Dox cells were treated with PBS, TPP-PPG, ICG, PPG@ICG, or TPP-PPG@ICG (ICG equivalent, 15 μM) with laser irradiation, or they were treated with TPP-PPG@ICG without laser irradiation. a Mitochondrial superoxide production and b mitochondrial membrane potentials were measured using MitoSOX Red and JC-1, respectivelyBack to article page