Artificial Channels in an Infectious Biofilm Created by Magnetic Nanoparticles Enhanced Bacterial Killing by Antibiotics.
Kecheng QuanZexin ZhangHong ChenXiaoxiang RenYijin RenBrandon W PetersonHenny C Van der MeiHenk J BusscherPublished in: Small (Weinheim an der Bergstrasse, Germany) (2019)
The poor penetrability of many biofilms contributes to the recalcitrance of infectious biofilms to antimicrobial treatment. Here, a new application for the use of magnetic nanoparticles in nanomedicine to create artificial channels in infectious biofilms to enhance antimicrobial penetration and bacterial killing is proposed. Staphylococcus aureus biofilms are exposed to magnetic-iron-oxide nanoparticles (MIONPs), while magnetically forcing MIONP movement through the biofilm. Confocal laser scanning microscopy demonstrates artificial channel digging perpendicular to the substratum surface. Artificial channel digging significantly (4-6-fold) enhances biofilm penetration and bacterial killing efficacy by gentamicin in two S. aureus strains with and without the ability to produce extracellular polymeric substances. Herewith, this work provides a simple, new, and easy way to enhance the eradication of infectious biofilms using MIONPs combined with clinically applied antibiotic therapies.
Keyphrases
- candida albicans
- staphylococcus aureus
- magnetic nanoparticles
- biofilm formation
- pseudomonas aeruginosa
- iron oxide nanoparticles
- drug delivery
- methicillin resistant staphylococcus aureus
- optical coherence tomography
- escherichia coli
- cancer therapy
- high throughput
- high speed
- cystic fibrosis
- helicobacter pylori
- drug release
- label free