Journal
MOLECULES
Volume 26, Issue 8, Pages -Publisher
MDPI
DOI: 10.3390/molecules26082199
Keywords
chitosan oligosaccharide; intestinal barrier; mucus; intestinal tight junction; inflammatory bowel disease
Funding
- National Key Research and Development Program of China [2019YFD0902000]
- National Natural Science Foundation of China [31870802]
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Chitosan oligosaccharide has been shown to have a protective effect on intestinal mucus in inflammatory bowel disease, improving DSS-induced mucus defects, with its structural characteristics playing a key role in this activity.
Intestinal barrier dysfunction is an essential pathological change in inflammatory bowel disease (IBD). The mucus layer and the intestinal epithelial tight junction act together to maintain barrier integrity. Studies showed that chitosan oligosaccharide (COS) had a positive effect on gut health, effectively protecting the intestinal barrier in IBD. However, these studies usually focused on its impact on the intestinal epithelial tight junction. The influence of COS on the intestinal mucus layer is still poorly understood. In this study, we explored the effect of COS on intestinal mucus in vitro using human colonic mucus-secreted HT-29 cells. COS relieved DSS (dextran sulfate sodium)-induced mucus defects. Additionally, the structural characteristics of COS greatly influenced this activity. Finally, we evaluated the protective effect of COS on intestinal barrier function in mice with DSS-induced colitis. The results indicated that COS could manipulate intestinal mucus production, which likely contributed to its intestinal protective effects.
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