An autonomous tumor-targeted nanoprodrug for reactive oxygen species-activatable dual-cytochrome c/doxorubicin antitumor therapy

作者：Pei, Yuxia; Li, Menghuan; Hou, Yanhua; Hu, Yan^*; Chu, Guangyu; Dai, Liangliang; Li, Ke; Xing, Yuxin; Tao, Bailong; Yu, Yonglin; Xue, Chencheng; He, Ye; Luo, Zhong^*; Cai, Kaiyong^*

来源：Nanoscale, 2018, 10(24): 11418-11429.

DOI：10.1039/c8nr02358a

• MESOPOROUS SILICA NANOPARTICLES
• CANCER-THERAPY
• DRUG-DELIVERY
• PROTEIN
• RELEASE
• PRODRUG
• NANOMEDICINE
• NANOCARRIERS
• PLATFORM

The precise tumor cell-specific delivery of therapeutic proteins and the elimination of side effects associated with routine chemotherapeutic agents are two current critical considerations for tumor therapy. In this study, we report a reactive oxygen species (ROS)-activated yolk-shell nanoplatform for the tumor-specific co-delivery of cytochrome c (Cyt c) prodrug and doxorubicin, in which the bioactivity of Cyt c could be restored by the intracellular ROS-trigger and readily initiate the sequential doxorubicin release. The DOX-loaded lactobionic acid-modified yolk-shell mesoporous silica nanoparticles were first encapsulated with 4-nitrophenyl 4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzyl carbonate (NBC)-modified Cyt c via boronic ester linkages, and functionalized again with lactobionic acid to further shield Cyt c and confer the selective tumor targeting against liver cancer cells. The key feature in this design is that by taking advantage of the boronic ester linkage, the cytotoxicity of Cyt c capped on the nanoparticle could be temporarily deactivated during blood transportation and rapidly restored upon exposure to the ROS-rich microenvironment within liver cancer cells, thereby simultaneously achieving the protein therapy and stimuli-responsive doxorubicin release. This study presents a novel strategy for the development of tumor-sensitive co-delivery nanoplatforms.

• 出版日期2018-6-28
• 单位重庆大学; 中国科学院声学研究所