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 Advjournal_title
Science advancesauthors
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 Hdoi
10.1126/sciadv.abb2695subject
Has Abstractpub_date
2020-07-17 00:00:00pages
eabb2695issue
29issn
2375-2548pii
abb2695journal_volume
6pub_type
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