Journal
NANO LETTERS
Volume 23, Issue 22, Pages 10374-10382Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.nanolett.3c02965
Keywords
Capsule shedding; Membrane binding; Energytransfer; Gram-negative bacteria; Photodynamic antimicrobialtherapy
Ask authors/readers for more resources
This study discovers a new antimicrobial agent, a water-soluble porphyrin-cored hyperbranched conjugated polyelectrolyte (PorHP), which exhibits high photodynamic bactericidal activity against Gram-negative bacteria and low cytotoxicity toward mammalian cells.
The development of new antimicrobial agents to treat infections caused by Gram-negative bacteria is of paramount importance due to increased antibiotic resistance worldwide. Herein, we show that a water-soluble porphyrin-cored hyperbranched conjugated polyelectrolyte (PorHP) exhibits high photodynamic bactericidal activity against the Gram-negative bacteria tested, including a multidrug-resistant (MDR) pathogen, while demonstrating low cytotoxicity toward mammalian cells. Comprehensive analyses reveal that the antimicrobial activity of PorHP proceeds via a multimodal mechanism by effective bacterial capsule shedding, strong bacterial outer membrane binding, and singlet oxygen generation. Through this multimodal antimicrobial mechanism, PorHP displays significant performance for Gram-negative bacteria with >99.9% photodynamic killing efficacy. Overall, PorHP shows great potential as an antimicrobial agent in fighting the growing threat of Gram-negative bacteria.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available