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Synthesis and antibacterial properties of fluorinated biodegradable cationic polyesters
Zhao-Yue Li1, Xiaoying Zhang2, Yi-Lin Qian1
1Beijing National Laboratory for Molecular Sciences, Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, Center for Soft Matter Science and Engineering, College of Chemistry & Molecular Engineering, Peking University, Beijing 100871, China. fsdu@pku.edu.cn.
Journal of Materials Chemistry. B
|January 22, 2024
Summary
New degradable cationic polyesters mimic antimicrobial peptides to combat antibiotic resistance. These polymers show selective antibacterial activity against Staphylococcus aureus, offering a promising strategy against resistant bacteria.
Area of Science:
- Polymer Chemistry
- Materials Science
- Biotechnology
Background:
- Antimicrobial resistance is a growing global health threat.
- Antimicrobial peptide-mimicking polymers offer a potential solution.
- Developing effective and selective antibacterial agents is crucial.
Purpose of the Study:
- To synthesize and evaluate degradable amphiphilic cationic polyesters.
- To investigate their antibacterial activity and selectivity.
- To explore the mechanism of membrane disruption.
Main Methods:
- Synthesis of polyesters via one-pot successive thiol-Michael addition reactions.
- Evaluation of antibacterial activity against *S. aureus* and *E. coli*.
- Assessment of hemolytic activity and membrane disruption mechanisms (killing kinetics, SEM).
Main Results:
- Successfully synthesized degradable amphiphilic cationic polyesters.
- Demonstrated moderate antibacterial activity and selectivity against *S. aureus*.
- Identified the influence of cationic/hydrophobic ratio and fluoroalkyl groups on performance.
Conclusions:
- Degradable cationic polyesters show promise as antimicrobial agents.
- Tuning polymer composition enhances antibacterial selectivity.
- Further development could lead to novel solutions for antimicrobial resistance.
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