A slug-mucus-inspired single-cell coating system (AC-EcN) provides prolonged protection over 96 hours against gastrointestinal barriers, enhances probiotic colonization efficiency, and significantly improves treatment of inflammatory bowel disease by modulating intestinal inflammation and restoring barrier function.
Key Findings
Background
The AC-EcN single-cell coating system was developed with a double-layer network structure inspired by slug mucus adhesive properties.
The coating is described as 'biomimetic universal single-cell coated probiotics system (AC-EcN)'
The double-layer network structure provides strong adhesion, durability, and self-healing after shear stress
The design was inspired by 'the strong reparative properties and adhesive features of slug mucus'
The coating was designed as a universal approach applicable to orally administered probiotics
Results
The AC-EcN coating provided prolonged protection against gastrointestinal barriers for over 96 hours.
Protection duration exceeded 96 hours against gastrointestinal barriers
The coating significantly enhanced probiotic proliferation in the intestines
Sustained cumulative effects were achieved with multiple oral administrations
The coating system addressed 'significant survival challenges due to the protective environment of the gastrointestinal tract'
Results
AC-EcN selectively aggregates in response to intestinal inflammation, amplifying the therapeutic benefits of probiotics.
The system can 'selectively aggregate in response to inflammation'
Selective aggregation was described as 'amplifying the therapeutic benefits of probiotics'
This inflammation-responsive behavior distinguishes AC-EcN from uncoated probiotics
The targeted aggregation contributes to modulation of intestinal inflammation
Results
AC-EcN treatment modulated intestinal inflammation, restored intestinal barrier function, and altered intestinal microbial community structure in IBD models.
The treatment 'rapidly restores intestinal barrier function'
AC-EcN 'modulates intestinal inflammation'
The system 'alters intestinal microbial community structure'
The combined effects were described as 'fundamentally reestablishing a healthy colonic state and reversing IBD'
Background
Oral probiotics face significant survival challenges in the gastrointestinal tract that limit their therapeutic efficacy for IBD.
Probiotics are known to alleviate symptoms of IBD, metabolic disorders, and cardiovascular disorders by modulating the gut microbiota
The gastrointestinal tract presents a 'protective environment' that challenges probiotic survival
Improving colonization efficiency was identified as a key unmet need in probiotic therapy
The coating strategy was developed specifically to address these survival and colonization limitations
Conclusions
The single-cell coating strategy was demonstrated as a universal approach to enhance orally administered probiotics for IBD treatment.
The approach is described as a 'universal approach to potentiate orally administered probiotics'
The strategy 'significantly enhances the treatment of IBD'
The system improved 'probiotic colonization efficiency' as its primary mechanism of enhanced efficacy
The coating was designed to be applicable broadly rather than to a single probiotic strain
Yang J, Wang J, Shang N, Xu J, Lou C, Zhou X, et al.. (2026). Slug-mucus-inspired single-cell coating enhances the treatment of inflammatory bowel disease by improving probiotic colonization efficiency.. Journal of controlled release : official journal of the Controlled Release Society. https://doi.org/10.1016/j.jconrel.2026.114714