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Guiding antibiotics towards their target using bacteriophage proteins
Xinghong Zhao1,2, Xinyi Zhong3,4, Shinong Yang3,4
1Center for Sustainable Antimicrobials, Department of Pharmacy, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, 611130, China. xinghong.zhao@sicau.edu.cn.
Nature Communications
|June 20, 2024
Summary
New nanodelivery systems use bacteriophage proteins to target antibiotics to infections. These systems show high specificity and efficacy, outperforming free antibiotics and offering a promising strategy against difficult-to-treat bacterial infections.
Area of Science:
- Biotechnology
- Infectious Diseases
- Drug Delivery
Background:
- Difficult-to-treat bacterial infections necessitate novel therapeutic strategies.
- Repurposing existing antibiotics offers a faster, cheaper approach.
- Current nanodelivery systems often lack target adaptability, biocompatibility, or specificity.
Purpose of the Study:
- To develop adaptable, specific, and biocompatible nanodelivery systems for antibiotics.
- To utilize bacteriophage-derived proteins for targeted antibiotic delivery.
- To combat difficult-to-treat bacterial infections effectively.
Main Methods:
- Conjugating bacteriophage receptor-binding proteins and cell-wall binding domains to nanoparticles.
- Developing nanodelivery systems for rifampicin, imipenem, and ampicillin.
- Evaluating specificity, accumulation at infection sites, and in vivo efficacy.
Main Results:
- Nanoparticles demonstrated excellent target specificity and accumulation at infection sites.
- Antibiotic-loaded nanoparticles significantly suppressed infections compared to free antibiotics.
- Effectiveness was observed at 16 to 32-fold lower doses than free antibiotics.
Conclusions:
- Bacteriophage-sourced targeting proteins are effective for guiding nanodelivery systems.
- These systems offer specificity, availability, and biocompatibility for antibiotic delivery.
- This approach presents a promising strategy for combating challenging bacterial infections.
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