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Nanogel Multienzyme Mimics Synthesized by Biocatalytic ATRP and Metal Coordination for Bioresponsive Fluorescence Imaging
Author(s) -
Qi Meiyuan,
Pan Hui,
Shen Hongdou,
Xia Xianmeng,
Wu Chu,
Han Xiaoke,
He Xingyue,
Tong Wei,
Wang Xia,
Wang Qigang
Publication year - 2020
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.202002331
Subject(s) - nanogel , chemistry , artificial enzyme , metal ions in aqueous solution , combinatorial chemistry , atom transfer radical polymerization , corrole , catalysis , polymerization , nanotechnology , polymer chemistry , metal , polymer , photochemistry , materials science , organic chemistry , drug delivery
The design of enzyme mimics from stable and nonprotein systems is especially attractive for applications in highly specific cancer diagnosis and treatment, and it has become an emerging field in recent years. Herein, metal crosslinked polymeric nanogels (MPGs) were prepared using Fe II ion coordinated biocompatible acryloyl‐lysine polymer brushes obtained from an enzyme‐catalyzed atomic transfer radical polymerization (ATRPase) method. The monoatomic and highly dispersed Fe ions in the MPGs serve as efficient crosslinkers of the gel network, and also as active centers of multienzyme mimics of superoxide dismutase (SOD) and peroxidase (POD). The catalytic activities were compared to those of conventional Fe‐based nanozymes. Studies on both cells and animals verify that efficient reactive oxygen species (ROS) responsive biofluorescence imaging can be successfully realized using the MPGs.