Light-Trigerred Cellular Epigenetic Molecule Release To Reverse Tumor Multidrug Resistance

Owing to the high spatial and temporal resolution of light, light related biotechnologies, for example, optogenetics, has wide ranging applications in neuroscience to control a subject's behavior. Applying light to control tumors' genetic behavior directly was still a challenge so far. Herein, we put forward a strategy of chemical optoepigenomics, in which an epigenetic regulator (vorinostat) and paclitaxel (PTX) were conjugated onto a light-sensitive chemical molecule. The activity of vorinostat could be precisely controlled by the light, which could minimize the off-target effect. After UV irradiation under 350 nm, the photocaged epigenetic regulator (vorinostat) was selectively released from the conjugate in a spatiotemporal manner, inhibiting the activity of histone deacetylase and then reversing the PTX resistance of tumor cells effectively.