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Magnetotactic Bacteria Powered Biohybrids Target E. coli Biofilms.
Morgan M Stanton1,2, Byung-Wook Park2, Diana Vilela1,3
1Lab-in-a-Tube and Nanorobotic Biosensors, Max Planck Institute for Intelligent Systems , Heisenbergstraße 3, 70569 Stuttgart, Germany.
ACS Nano
|September 22, 2017
Summary
This study introduces biohybrids, combining bacteria and drug-loaded microtubes, for targeted biofilm removal. These microswimmers deliver antibiotics effectively to combat antibiotic-resistant bacterial infections.
Area of Science:
- Biotechnology
- Microbiology
- Materials Science
Background:
- Biofilm infections are challenging to treat with conventional antibiotics due to inherent resistance.
- Current nanoparticle-based antibiotic delivery methods show moderate efficacy due to limited targeting precision.
Purpose of the Study:
- To develop a novel biohybrid microswimmer system for targeted antibiotic delivery to biofilms.
- To enhance the efficacy of antibiofilm treatments using magnetically guided bacteria.
Main Methods:
- Integration of nonpathogenic Magnetosopirrillum gryphiswalense (MSR-1) with drug-loaded mesoporous silica microtubes.
- Utilizing MSR-1's magnetic guidance and motility for directed biofilm penetration.
- Triggering antibiotic release (ciprofloxacin) via the biofilm's acidic microenvironment.
Main Results:
- Successfully created controllable biohybrid microswimmers capable of navigating to and penetrating mature Escherichia coli biofilms.
- Demonstrated forceful insertion into biofilms using magnetic guidance and bacterial propulsion.
- Achieved efficient drug delivery triggered by the biofilm's acidic conditions.
Conclusions:
- Nonpathogenic bacteria can be engineered into effective antibiofilm agents.
- Biohybrid microswimmers offer a promising platform for targeted drug delivery and biofilm eradication.
- This approach holds significant potential for future antibiofilm therapeutic strategies.