Dual Intratumoral Redox/Enzyme‐Responsive NO‐Releasing Nanomedicine for the Specific,High‐Efficacy,and Low‐Toxic Cancer Therapy |
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| Authors: | Xiaobo Jia Yihua Zhang Yu Zou Yao Wang Dechao Niu Qianjun He Zhangjian Huang Weihong Zhu He Tian Jianlin Shi Yongsheng Li |
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| Affiliation: | 1. Lab of Low‐Dimensional Materials Chemistry, Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai, P. R. China;2. State Key Laboratory of Natural Medicines, Jiangsu Key Laboratory of Drug Discovery for Metabolic Diseases, China Pharmaceutical University, Nanjing, P. R. China;3. Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging, School of Biomedical Engineering, Health Science Center, Shenzhen University, Shenzhen, China;4. Shanghai Key Laboratory of Functional Materials Chemistry, Key Laboratory for Advanced Materials and Institute of Fine Chemicals, East China University of Science & Technology, Shanghai, China |
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| Abstract: | Chemotherapy suffers numbers of limitations including poor drug solubility, nonspecific biodistribution, and inevitable adverse effects on normal tissues. Tumor‐targeted delivery and intratumoral stimuli‐responsive release of drugs by nanomedicines are considered to be highly promising in solving these problems. Compared with traditional chemotherapeutic drugs, high concentration of nitric oxide (NO) exhibits unique anticancer effects. The development of tumor‐targeting and intratumoral microenvironment‐responsive NO‐releasing nanomedicines is highly desired. Here a novel kind of organic–inorganic composite nanomedicine (QM‐NPQ@PDHNs) is presented by encapsulating a glutathione S‐transferases π (GSTπ)‐responsive drug O2‐(2,4‐dinitro‐5‐{[2‐(β‐d ‐galactopyranosyl olean‐12‐en‐28‐oate‐3‐yl)‐oxy‐2‐oxoethyl] piperazine‐1‐yl} phenyl) 1‐(methylethanolamino)diazen‐1‐ium‐1,2‐dilate (NPQ) as NO donor and an aggregation‐induced‐emission (AIE) red fluorogen QM‐2 into the cores of the hybrid nanomicelles (PEGylated disulfide‐doped hybrid nanocarriers (PDHNs)) with glutathione (GSH)‐responsive shells. The QM‐NPQ@PDHN nanomedicine is able to respond to the intratumoral over‐expressed GSH and GSTπ, resulting in the responsive biodegradation of the protective organosilica shell and NPQ release, and subsequent NO release within the tumor, respectively, and thus normal organs remain unaffected. This work demonstrates a paradigm of dual intratumoral redox/enzyme‐responsive NO‐release nanomedicine for tumor‐specific and high‐efficacy cancer therapy. |
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| Keywords: | dual‐responsiveness nitric oxide prodrug delivery safe treatment tumor therapy |
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