ArticleNPJ biofilms and microbiomes2026
miR-9394b from Lactobacillus paracasei extracellular vesicles targets iNOS to reprogram host NO-ornithine metabolism and ameliorate DSS-induced murine colitis.
Article in NPJ biofilms and microbiomes, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Who cites it
1 citing paper in PubMed.
- Engineering Small Extracellular Vesicles for Colon-Targeted Delivery: Microenvironment-Responsive Design, Therapeutic Mechanisms, and Clinical Translation.International journal of nanomedicine · 2026Review
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Authors and funding
11 authors.
Funding
Abstract
Ulcerative colitis (UC) is a growing global health burden, creating an urgent need for new therapies. While extracellular vesicles (EVs) from probiotic bacteria show therapeutic potential, their molecular mechanisms are largely unknown. This study reveals that Lactobacillus paracasei (LPC) and its EVs (LPC-EVs) alleviate Dextran Sulfate Sodium Salt (DSS)-induced colitis in mice through a multi-faceted mechanism involving partial reshaping of the gut microbiota, suppression of TLR4/NF-κB signaling, and reinforcement of tight junctions. We found that miR-9394b carried by LPC-EVs plays a central role in this effect. In MODE-K cells, miR-9394b directly targets iNOS, shifting arginine metabolism away from nitric oxide (NO) production toward ornithine-associated metabolism. The increased ornithine served as a downstream mediator linking epithelial metabolic remodeling to macrophage polarization. Collectively, these findings support a model in which bacterial EVs mediate the transfer of miR-9394b to coordinate a metabolic-immune response, highlighting a potential avenue for miRNA-guided intervention in experimental colitis.
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Registered trials
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