Integrated cascade nanozyme catalyzes in vivo ROS scavenging for anti-inflammatory therapy.

Abstract:

:Here, an integrated cascade nanozyme with a formulation of Pt@PCN222-Mn is developed to eliminate excessive reactive oxygen species (ROS). This nanozyme mimics superoxide dismutase by incorporation of a Mn-[5,10,15,20-tetrakis(4-carboxyphenyl)porphyrinato]-based metal-organic framework compound capable of transforming oxygen radicals to hydrogen peroxide. The second mimicked functionality is that of catalase by incorporation of Pt nanoparticles, which catalyze hydrogen peroxide disproportionation to water and oxygen. Both in vitro and in vivo experimental measurements reveal the synergistic ROS-scavenging capacity of such an integrated cascade nanozyme. Two forms of inflammatory bowel disease (IBD; i.e., ulcerative colitis and Crohn's disease) can be effectively relieved by treatment with the cascade nanozyme. This study not only provides a new method for constructing enzyme-like cascade systems but also illustrates their efficient therapeutic promise in the treatment of in vivo IBDs.

journal_name

Sci Adv

journal_title

Science advances

authors

Liu Y,Cheng Y,Zhang H,Zhou M,Yu Y,Lin S,Jiang B,Zhao X,Miao L,Wei CW,Liu Q,Lin YW,Du Y,Butch CJ,Wei H

doi

10.1126/sciadv.abb2695

subject

Has Abstract

pub_date

2020-07-17 00:00:00

pages

eabb2695

issue

29

issn

2375-2548

pii

abb2695

journal_volume

6

pub_type

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