Volume 58, Issue 33 pp. 11404-11408
Communication

Inhibition of Pathogen Adhesion by Bacterial Outer Membrane-Coated Nanoparticles

Dr. Yue Zhang

Dr. Yue Zhang

Department of NanoEngineering, Chemical Engineering Program, Moores Cancer Center, University of California San Diego, La Jolla, CA, 92039 USA

These authors contributed equally to this work.

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Dr. Yijie Chen

Dr. Yijie Chen

Department of NanoEngineering, Chemical Engineering Program, Moores Cancer Center, University of California San Diego, La Jolla, CA, 92039 USA

These authors contributed equally to this work.

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Christopher Lo

Christopher Lo

Department of NanoEngineering, Chemical Engineering Program, Moores Cancer Center, University of California San Diego, La Jolla, CA, 92039 USA

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Jia Zhuang

Jia Zhuang

Department of NanoEngineering, Chemical Engineering Program, Moores Cancer Center, University of California San Diego, La Jolla, CA, 92039 USA

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Dr. Pavimol Angsantikul

Dr. Pavimol Angsantikul

Department of NanoEngineering, Chemical Engineering Program, Moores Cancer Center, University of California San Diego, La Jolla, CA, 92039 USA

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Qiangzhe Zhang

Qiangzhe Zhang

Department of NanoEngineering, Chemical Engineering Program, Moores Cancer Center, University of California San Diego, La Jolla, CA, 92039 USA

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Dr. Xiaoli Wei

Dr. Xiaoli Wei

Department of NanoEngineering, Chemical Engineering Program, Moores Cancer Center, University of California San Diego, La Jolla, CA, 92039 USA

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Zhidong Zhou

Zhidong Zhou

Department of NanoEngineering, Chemical Engineering Program, Moores Cancer Center, University of California San Diego, La Jolla, CA, 92039 USA

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Prof. Marygorret Obonyo

Prof. Marygorret Obonyo

Department of Medicine, University of California San Diego, La Jolla, CA, 92093 USA

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Dr. Ronnie H. Fang

Dr. Ronnie H. Fang

Department of NanoEngineering, Chemical Engineering Program, Moores Cancer Center, University of California San Diego, La Jolla, CA, 92039 USA

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Dr. Weiwei Gao

Dr. Weiwei Gao

Department of NanoEngineering, Chemical Engineering Program, Moores Cancer Center, University of California San Diego, La Jolla, CA, 92039 USA

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Prof. Liangfang Zhang

Corresponding Author

Prof. Liangfang Zhang

Department of NanoEngineering, Chemical Engineering Program, Moores Cancer Center, University of California San Diego, La Jolla, CA, 92039 USA

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First published: 17 June 2019
Citations: 154

Graphical Abstract

Nanoparticles coated with bacterial outer membranes (denoted “OM-NPs”) are reported as an anti-adhesion nanomedicine that competes with source bacteria for binding sites and therefore inhibits bacterial adhesion to the host cells. Specifically, OM-NPs prepared with Helicobacter pylori outer membrane were demonstrated to inhibit bacterial binding to the gastric epithelial cells and stomach tissues.

Abstract

Anti-adhesion therapies interfere with the bacterial adhesion to the host and thus avoid direct disruption of bacterial cycles for killing, which may alleviate resistance development. Herein, an anti-adhesion nanomedicine platform is made by wrapping synthetic polymeric cores with bacterial outer membranes. The resulting bacterium-mimicking nanoparticles (denoted “OM-NPs”) compete with source bacteria for binding to the host. The “top-down” fabrication of OM-NPs avoids the identification of the adhesins and bypasses the design of agonists targeting these adhesins. In this study, OM-NPs are made with the membrane of Helicobacter pylori and shown to bind with gastric epithelial cells (AGS cells). Treatment of AGS cells with OM-NPs reduces H. pylori adhesion and such anti-adhesion efficacy is dependent on OM-NP concentration and its dosing sequence.

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