Issue 43, 2022

Glutathione-depletion reinforced enzyme catalytic activity for photothermal assisted bacterial killing by hollow mesoporous CuO

Abstract

The emergence and prevalence of drug-resistant bacteria caused by the overuse of antibiotics pose new challenges to the treatment of bacterial infections. In this work, hollow mesoporous CuO nanozymes (HM-CuO nanozymes) as excellent antibacterial agents were prepared by a template method. The synthesized HM-CuO nanozymes exhibit peroxidase-like catalytic activity, which can efficiently catalyze H2O2 to generate toxic reactive oxygen species (ROS), causing fatal damage to bacteria. Moreover, the hyperthermia of HM-CuO produced by photothermal therapy (PTT) not only effectively kills bacteria but also enhances the catalytic activity of nanozymes and produces more ROS. Moreover, the HM-CuO nanozymes have a glutathione (GSH)-depleting function to effectively consume GSH in bacteria and generate Cu(I) with higher catalytic effect, which can significantly improve the sterilization effect and produce a 100% inhibitory rate against E. coli and S. aureus. Overall, the HM-CuO nanozymes with strong peroxidase-like catalytic activity, excellent photothermal performance and GSH consumption ability offer a promising synergistic strategy for clinical bacterial infection.

Graphical abstract: Glutathione-depletion reinforced enzyme catalytic activity for photothermal assisted bacterial killing by hollow mesoporous CuO

Supplementary files

Article information

Article type
Paper
Submitted
01 Pha 2022
Accepted
03 Mph 2022
First published
06 Mph 2022

J. Mater. Chem. B, 2022,10, 8883-8893

Glutathione-depletion reinforced enzyme catalytic activity for photothermal assisted bacterial killing by hollow mesoporous CuO

H. Shi, C. Ban, C. Dai, C. Li, X. Zhou, R. Xia, J. Qian and M. Cao, J. Mater. Chem. B, 2022, 10, 8883 DOI: 10.1039/D2TB01621D

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