Issue 2, 2020

Remote-controlled multi-enzyme system for enhanced tumor therapy via dark/light relay catalysis

Abstract

Nanozymes have been widely used in biomedicine, especially in tumor therapy. However, inadequate H2O2 supply in the tumor microenvironment (TME) and uncontrolled catalytic activity of nanozymes in vivo restrict their practical application. Here, a dark/light relay strategy is proposed to realize adequate H2O2 supply in the dark reaction stage and selectively perform desired catalytic activities for toxic reactive oxygen species (ROS) generation to kill tumors by remote light control. A tumor membrane camouflaged and glucose oxidase (GOx) loaded hollow mesoporous Prussian blue (mGPB) nanosystem is designed to target tumor tissues for homologous aggregation of membranes. The cascaded catalysis of superoxide dismutase (SOD) and catalase (CAT)-like activities inherited from hollow mesoporous Prussian blue (HMPB) efficiently catalyze endogenous O2˙ to O2, which contributes to the oxidative decomposition of glucose to produce H2O2 by loaded GOx. Moreover, mGPB nanoparticles are found to utilize H2O2 to produce ˙OH and 1O2 under NIR irradiation via other light-dependent dual-catalytic properties, acting as peroxidase (POD) and oxidase (OXD). By dark/light relay catalysis, we successfully overcome the limited H2O2 supply in TME and achieve precise ROS generation, displaying prominent tumor suppression in mouse xenograft models.

Graphical abstract: Remote-controlled multi-enzyme system for enhanced tumor therapy via dark/light relay catalysis

Supplementary files

Article information

Article type
Communication
Submitted
04 sen 2019
Accepted
11 okt 2019
First published
11 okt 2019

Nanoscale Horiz., 2020,5, 283-293

Remote-controlled multi-enzyme system for enhanced tumor therapy via dark/light relay catalysis

Y. Chen, Z. Li, J. Hu, S. Peng, L. Rong, Y. Sun and X. Zhang, Nanoscale Horiz., 2020, 5, 283 DOI: 10.1039/C9NH00583H

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements