
Advanced Science, Journal Year: 2024, Volume and Issue: unknown
Published: Dec. 25, 2024
Abstract The increasing occurrence of infections caused by multidrug‐resistant (MDR) bacteria drives the need for new antibacterial drugs. Due to current lack antibiotic discovery and development, strategies fight MDR are urgently needed. Efforts develop adjuvants increase effectiveness existing antibiotics design delivery systems essential address this issue. Here, a bioinspired system equipped with combination therapy paracellular transport is shown enhance efficacy against bacterial improving oral delivery. A screening platform established using an in vitro‐induced high polymyxin‐resistant strain acquire plumbagin, which enhances polymyxin. Functionalized milk extracellular vesicles (FMEVs) coloaded polymyxin plumbagin cleared 99% within 4 h. Mechanistic studies revealed that drug damaged membrane, disrupted energy metabolism, accelerated death. Finally, FMEVs efficiently transported transcellularly through citric acid‐mediated reversible opening tight junctions showed Escherichia coli ‐associated peritonitis–sepsis model mice. These findings provide potential therapeutic strategy improve enhancing biomimetic platform.
Language: Английский