期刊
MOLECULES
卷 27, 期 7, 页码 -出版社
MDPI
DOI: 10.3390/molecules27072235
关键词
raffino-oligosaccharide; constipation; gut microbiota; targeted screening; network pharmacology; molecular docking
资金
- Lingnan Modern Agricultural Science And Technology Guangdong Laboratory Independent Scientific Research Project [NZ2021032]
- Guangdong Provincial Key Laboratory of Food Quality and Safety [2020B1212060059]
- Key Area R&D Program of Guangdong Province [2019B020211002]
- Science and Technology Planning Project of Guangzhou City [202102080615]
- Guangdong Province Universities and Colleges Pearl River Scholar Funded Scheme (2017)
This study demonstrates that raffino-oligosaccharide (ROS) can prevent constipation and improve gastrointestinal transit rate and defecation frequency in mice. It also regulates the diversity and structure of intestinal flora. Targeted screening reveals 29 targets related to the anti-constipation effects of ROS, and network pharmacology analysis identifies several core anti-constipation targets.
Raffino-oligosaccharide (ROS), the smallest oligosaccharide of the raffinose family, is a novel food ingredient. However, the anti-constipation effects of ROS remain obscure. This study investigates the anti-constipation effects of ROS based on the loperamide-induced mice model and reveals the underlying mechanism using constipation parameters, neurotransmitter level, 16S rRNA sequencing, and the targeted screening strategy. The prevention effects were firstly investigated by the gastro-intestinal transit rate experiment (50 mice) and defecation status experiment (50 mice), which were divided into five groups (n = 10/group): blank, model, and low-, medium- and high-dose ROS. Furthermore, the slow-transit constipation experiment (blank, model, and high-dose ROS, n = 10/group) was conducted to illustrate the underlying mechanism. The results showed that ROS aided in preventing the occurrence of constipation by improving the gastro-intestinal transit rate and the defecation frequency in mice, and ROS significantly reduced the serum levels of vasoactive intestinal peptide (VIP). In addition, ROS regulated the diversity and structure of intestinal flora. Among them, one specific family and six specific genera were significantly regulated in constipated mice. The targeted screening revealed that 29 targets related to the anti-constipation effects of ROS, indicating ROS may play a role by regulating multiple targets. Furthermore, the network pharmacology analysis showed that Akt1, Stat3, Mapk8, Hsp90aa1, Cat, Alb, Icam1, Sod2, and Gsk3b can be regarded as the core anti-constipation targets. In conclusion, ROS could effectively relieve constipation, possibly by inhibiting the level of neurotransmitters and regulating the gut flora in mice. This study also provides a novel network pharmacology-based targeted screening strategy to reveal the anti-constipation effects of ROS.
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