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Updated: Feb 4, 2026
11:10
Expression, Purification, and Antimicrobial Activity of S100A12
Published on: May 13, 2017
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Biocompatible bacteria-derived vesicles show inherent antimicrobial activity.
Eilien Schulz1, Adriely Goes1, Ronald Garcia2
1Helmholtz Centre for Infection Research (HZI), Biogenic Nanotherapeutics Group (BION), Helmholtz Institute for Pharmaceutical Research Saarland (HIPS), Campus E8.1, Saarbrücken 66123, Germany; Department of Pharmacy, Saarland University, Campus E8.1, Saarbrücken 66123, Germany.
Summary
Naturally derived outer membrane vesicles (OMVs) show promise as drug carriers for combating antibiotic resistance. These biocompatible OMVs effectively deliver antimicrobial compounds, offering a novel therapeutic strategy against resistant bacterial infections.
Area of Science:
- Microbiology
- Biotechnology
- Drug Delivery Systems
Background:
- Antibiotic resistance poses a significant global health threat, with projections of up to 10 million annual deaths by 2050.
- Pharmaceutical research into new antibiotics has declined, necessitating alternative strategies to combat resistant infections.
- Synthetic nanoantibiotics face limitations in targeting specificity and potential for self-induced side effects.
Purpose of the Study:
- To characterize naturally derived outer membrane vesicles (OMVs) from myxobacteria as biocompatible drug carriers.
- To evaluate the inherent antibacterial properties and therapeutic potential of these myxobacterial OMVs.
- To investigate OMVs as a novel delivery system for antimicrobial agents against bacterial pathogens.
Main Methods:
- Isolation and purification of OMVs from myxobacterial strains (Cystobacter velatus Cbv34, Sorangiineae species SBSr073) using differential centrifugation and size-exclusion chromatography.
- Characterization of OMVs' morphology via electron cryomicroscopy and assessment of biocompatibility with epithelial cells and macrophages.
- Evaluation of OMV stability under various storage conditions and assessment of their uptake and antimicrobial activity against Escherichia coli (E. coli).
Main Results:
- Myxobacterial OMVs exhibited biocompatibility with host cells and low endotoxin activity, indicating minimal inflammatory potential.
- OMVs demonstrated inherent stability across different storage conditions, including refrigeration and freeze-drying.
- OMVs effectively delivered antimicrobial compounds, showing comparable efficacy to gentamicin in inhibiting E. coli growth and containing cystobactamids.
Conclusions:
- Naturally derived OMVs from myxobacteria are promising, biocompatible drug carriers with inherent antimicrobial properties.
- These OMVs offer a stable and effective platform for delivering existing antibiotics and novel compounds like cystobactamids.
- Myxobacterial OMVs represent a potential therapeutic strategy to overcome antibiotic resistance and treat bacterial infections.
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