Figure 5.
MTT assay of U87MG cells incubated with sc-PepIR-40 nanotubes with/without 808 nm laser irradiation (a) and DOX-loaded sc-PepIR-40 nanotubes with/without 808 nm laser irradiation (b). (c) CLSM images of cell viability assay after incubating with sc-PepIR-40 nanotubes or with DOX-loaded sc-PepIR-40 nanotubes with/without NIR laser irradiation. The cells were stained with live/dead viability kit (live cells were labeled with calcein AM with green fluorescence, and the dead cells were shown in red fluorescence after being labeled with EthD-1). All laser irradiations were performed using an 808 nm laser with a power intensity of 1.8 W cm−2 for 5 minutes.