What question did this study set out to answer?

This research aims to develop a novel nano-biotherapeutic utilizing Bletilla striata extracellular vesicles to treat colitis.

Bletilla striata-derived extracellular vesicles armed probiotic by supramolecular assembly ameliorates colitis via macrophage modulation and microbiota restoration

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Randomized trial demonstrates probiotic therapy improves colitis in IBD patients, suggesting enhanced treatment methods.

This research aims to develop a novel nano-biotherapeutic utilizing Bletilla striata extracellular vesicles to treat colitis.
Conjugated extracellular vesicles from Bletilla striata with Escherichia coli Nissle 1917.
Evaluated therapeutic efficacy through single-cell RNA sequencing and specific protein expression assays.
Analyzed improvements in epithelial barrier integrity and microbiota composition.
EcN@BEVs treatment improved epithelial barrier integrity with increased ZO-1 and Occludin expression.
Restored the Firmicutes/Bacteroidota ratio in the microbiota.
Shifted macrophage polarization from pro-inflammatory to anti-inflammatory phenotypes.

Hou et al. (2026) studied this question.

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