Tuning the Composition of AuPt Bimetallic Nanoparticles for Antibacterial Application

We show that bimetallic nanoparticles (NPs) of AuPt without any surface modification are potent antibiotic reagents, while pure Au NPs or pure Pt NPs display no antibiotic activities. The most potent antibacterial AuPt NPs happen to be the most effective catalysts for chemical transformations. The m...

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Published in:Angewandte Chemie International Edition 2014-07, Vol.53 (31), p.8127-8131
Main Authors: Zhao, Yuyun, Ye, Chunjie, Liu, Wenwen, Chen, Rong, Jiang, Xingyu
Format: Article
Language:English
Subjects:
Adenosine triphosphate
Anti-Bacterial Agents - chemistry
Anti-Bacterial Agents - pharmacology
Antibiotics
Antiinfectives and antibacterials
Bacteria
bimetallic nanoparticles
Bimetals
Communications
Escherichia coli - drug effects
gold
Gold - chemistry
Membranes
Metal Nanoparticles
Nanoparticles
platinum
Platinum - chemistry
Transformations
Tuning
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cited_by cdi_FETCH-LOGICAL-c6755-1b1454e2502c12b0542ed16bfd84a76bdb307f99e9066306804112e412a2e9603
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container_end_page 8131
container_issue 31
container_start_page 8127
container_title Angewandte Chemie International Edition
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creator Zhao, Yuyun
Ye, Chunjie
Liu, Wenwen
Chen, Rong
Jiang, Xingyu
description We show that bimetallic nanoparticles (NPs) of AuPt without any surface modification are potent antibiotic reagents, while pure Au NPs or pure Pt NPs display no antibiotic activities. The most potent antibacterial AuPt NPs happen to be the most effective catalysts for chemical transformations. The mechanism of antibiotic action includes the dissipation of membrane potential and the elevation of adenosine triphosphate (ATP) levels. These bimetallic NPs are unique in that they do not produce reactive oxygen species as most antibiotics do. Being non‐toxic to human cells, these bimetallic noble NPs might open an entry to a new class of antibiotics. No side‐effect: Bimetallic nanoparticles of AuPt are potent antibiotic reagents with low cytotoxicity. The antibiotic mechanism includes the rupture in the bacterial inner membrane and the increase of intracellular adenosine triphosphate levels, but does not involve the generation of reactive oxygen species (see picture).
doi_str_mv 10.1002/anie.201401035
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subjects Adenosine triphosphate
Anti-Bacterial Agents - chemistry
Anti-Bacterial Agents - pharmacology
Antibiotics
Antiinfectives and antibacterials
Bacteria
bimetallic nanoparticles
Bimetals
Communications
Escherichia coli - drug effects
gold
Gold - chemistry
Membranes
Metal Nanoparticles
Nanoparticles
platinum
Platinum - chemistry
Transformations
Tuning
title Tuning the Composition of AuPt Bimetallic Nanoparticles for Antibacterial Application
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