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Nanomechanics of Drug-target Interactions and Antibacterial Resistance Detection
Published on: October 25, 2013
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A disulfide molecule-vancomycin nanodrug delivery system efficiently eradicates intracellular bacteria
Yuting Luo1, Liu Su2, Hui Yang1
1MOE Key Laboratory for Analytical Science of Food Safety and Biology, College of Chemistry, Fuzhou University, Fuzhou, Fujian 350108, China. Jiezhou@fjmu.edu.cn.
Journal of Materials Chemistry. B
|February 8, 2024
Summary
A novel nanodrug delivery system, Van-DM NPs, enhances vancomycin
Area of Science:
- Nanomedicine
- Microbiology
- Drug Delivery
Background:
- Intracellular bacteria cause persistent infections.
- Antibiotics struggle to penetrate cell membranes for intracellular targets.
- Vancomycin has limited efficacy against intracellular bacteria.
Purpose of the Study:
- To develop a nanodrug delivery system to enhance vancomycin's intracellular penetration.
- To improve antibacterial activity against intracellular bacteria, specifically S. aureus.
Main Methods:
- Vancomycin (Van) and a disulfide molecule (DM) self-assembled into Van-DM NPs.
- Thiol-mediated disulfide exchange reactions facilitated bacterial surface accumulation and cell membrane translocation.
- An S. aureus intravenous infection mouse model was used for in vivo evaluation.
Main Results:
- Van-DM NPs demonstrated enhanced vancomycin accumulation on bacterial surfaces.
- Nanoparticles successfully translocated into host cell cytosol via disulfide exchange.
- Van-DM NPs significantly reduced bacterial load in the liver and spleen of infected mice.
Conclusions:
- Van-DM NPs effectively improve vancomycin's penetration and intracellular activity.
- This nanodrug system shows promise for treating intracellular bacterial infections.
- The thiol-mediated strategy offers a new approach for intracellular drug delivery.
