Chitosan oligosaccharide improves intestinal homeostasis to achieve the protection for the epithelial barrier of female Drosophila melanogaster via regulating intestinal microflora

• Published in: Microbiology spectrum Vol. 12; no. 4; p. e0363923
• Main Authors: Wang, Lu, Zhang, Cheng, Fan, Shuhang, Wang, Jianfeng, Zhou, Weihao, Zhou, Zhaohui, Liu, Yuhang, Wang, Qianna, Liu, Wei, Dai, Xianjun
• Format: Journal Article
• Language: English
• Published: United States American Society for Microbiology 02.04.2024
• Subjects: Animals; Antioxidants - metabolism; Chitosan - pharmacology; chitosan oligosaccharide; Drosophila melanogaster; Female; Gastrointestinal Microbiome; Health Promotion; Host-Microbial Interactions; Hydrogen Peroxide; intestinal homeostasis; intestinal microflora; Oligosaccharides - pharmacology; oxidant stress; Research Article; intestinal microflora; oxidant stress; intestinal homeostasis; chitosan oligosaccharide; Drosophila melanogaster
• ISSN: 2165-0497; 2165-0497
• DOI: 10.1128/spectrum.03639-23

Chitosan oligosaccharide (COS) is a new type of marine functional oligosaccharide with biological activities such as regulating intestinal microflora and improving intestinal immunity. In this study, female was used as a model organism to evaluate the effect of COS on intestinal injury by H O induction, and its mechanism was explored through the analysis of intestinal homeostasis. The results showed that 0.25% of COS could effectively prolong the lifespan of stressed female by increasing its antioxidant capacity and maintaining intestinal homeostasis, which included protecting the mechanical barrier, promoting the chemical barrier, and regulating the biological barrier by affecting its autophagy and the antioxidant signaling pathway. Additionally, the protective effect of COS on the intestinal barrier and homeostasis of under oxidative stress status is directly related to its regulation of the intestinal microflora, which could decrease excessive autophagy and activate the antioxidant system to promote health. The epithelial barrier plays an important role in the organism's health. Chitosan oligosaccharide (COS), a new potential prebiotic, exhibits excellent antioxidant capacity and anti-inflammatory effects. Our study elucidated the protective mechanisms of COS on the intestinal barrier of under oxidative stress, which could provide new insights into COS application in various industries, such as food, agriculture, and medicine.