Oral Bacterial Predator with "Catch-and-Kill" Functionality for Bacterial Enteritis via Selective Pathogen Capture...

Area of Science:

• Biomedical Engineering
• Nanotechnology
• Microbiology

Background:

• Conventional antibiotics face limitations in treating bacterial enteritis.
• There is a need for innovative therapeutic strategies to combat antibiotic resistance and improve treatment efficacy.

Purpose of the Study:

• To develop and evaluate SonoMMT, a microfluidically engineered sonosensitizer-montmorillonite complex, for bacterial enteritis treatment.
• To assess the multifaceted "catch-and-kill" mechanism of SonoMMT, integrating pathogen capture, sonodynamic therapy, and toxin neutralization.

Main Methods:

• SonoMMT was engineered to selectively adsorb bacteria and toxins, protect sonosensitizers, and enable sonodynamic therapy upon ultrasound activation.
• In vitro antibacterial efficacy and in vivo studies using a Salmonella typhimurium-induced enteritis mouse model were conducted.
• Gut microbiome analysis was performed to evaluate treatment effects on microbial composition.

Main Results:

• SonoMMT demonstrated robust antibacterial efficacy in vitro.
• Oral delivery of SonoMMT significantly reduced bacterial loads, toxin levels, intestinal inflammation, and tissue damage in vivo.
• Treatment with SonoMMT led to beneficial shifts in gut microbial composition, indicating microbiome restoration.

Conclusions:

• SonoMMT offers a transformative approach to managing bacterial enteritis through a synergistic "catch-and-kill" mechanism.
• The dual action of pathogen clearance and microbiome restoration highlights SonoMMT's potential as a next-generation therapeutic strategy.