Red light triggered photodynamic-chemo combination therapy using a prodrug caged by photosensitizer
作者:Gan Xu、Hong-Xia Zhang、Xiao-Qiang Li、De-Chao Yang、Jian-Yong Liu
DOI:10.1016/j.ejmech.2021.113251
日期:2021.4
active site, the formed prodrug displays an extremely low toxicity in dark. However, upon illumination by red light, it can efficiently generate ROS leading to cell death by photodynamictherapy. Meanwhile, the ROS generated can destroy thioketal group to release free camptothecin which further results in local cell death by chemotherapy. The combined antitumor effects of the prodrug have been verified
Integrated block copolymer prodrug nanoparticles for combination of tumor oxidative stress amplification and ROS-responsive drug release
作者:Wei Yin、Wendong Ke、Weijian Chen、Longchang Xi、Qinghao Zhou、Jean Felix Mukerabigwi、Zhishen Ge
DOI:10.1016/j.biomaterials.2018.12.032
日期:2019.3
internalization into tumor cells post systemic administration of Lapa@NPs, Lapa can selectively induce remarkable ROS level increase via the catalysis of NAD(P)H: quinone oxidoreductase-1 (NQO1) enzyme overexpressed in cancercells. Subsequently, enhanced ROS concentration would trigger the cleavage of thioketal linkers to release drug. The released CPT together with highROS level achieved a synergistic
and then triggers locoregional, controllable and on‐demand CPT release, but also exhibits cytotoxic effects on tumor cells. Thus, CPT‐mediated chemotherapy and PPa‐induced photodynamictherapy lead to the combined and enhanced suppression of tumor growth. Accordingly, such laser‐triggered, localized, controllable, and on‐demand drug release systems may provide an alternative option for CPT formulations