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Cited by 419

The DOI matches its Crossref record; 45 of the 45 references it cites were found in a registry or an index.

Hydrogen Peroxide Displacing DNA from Nanoceria: Mechanism and Detection of Glucose in Serum

Open access
Liu, Biwu, Sun, Ziyi, Huang, Po-Jung Jimmy, Liu, Juewen·2015·Journal of the American Chemical Society

Abstract

Hydrogen peroxide (H2O2) is a key molecule in biology. As a byproduct of many enzymatic reactions, H2O2 is also a popular biosensor target. Recently, interfacing H2O2 with inorganic nanoparticles has produced a number of nanozymes showing peroxidase or catalase activities. CeO2 nanoparticle (nanoceria) is a classical nanozyme. Herein, a fluorescently labeled DNA is used as a probe, and H2O2 can readily displace adsorbed DNA from nanoceria, resulting in over 20-fold fluorescence enhancement. The displacement mechanism instead of oxidative DNA cleavage is confirmed by denaturing gel electrophoresis and surface group pKa measurement. This system can sensitively detect H2O2 down to 130 nM (4.4 parts-per-billion). When coupled with glucose oxidase, glucose is detected down to 8.9 μM in buffer. Detection in serum is also achieved with results comparable with that from a commercial glucose meter. With an understanding of the ligand role of H2O2, new applications in rational materials design, sensor development, and drug delivery can be further exploited.

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Metadata

Authors
Liu, B., Sun, Z., Huang, P.-J. J., & Liu, J.
Venue
Journal of the American Chemical Society
Published
2015-01-20
Volume
137
Issue
3
Pages
1290-1295
ISSN
  • 0002-7863 (ISSN-L)
  • 1520-5126
OpenAlex
W2049188949
Cited by
419
References
45
FWCI
18.65
Type
journal article
Language
en
Open access
hybrid

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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

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