Discovery of anti-inflammatory molecules from Dendrobium officinale based on activity labelled molecular networking
Jun Dai1, Weidong Wang2, Fangfang He2
1Engineering Technology Research Center of Plant Cell Engineering, West AnHui University, Luan 237000 PR China.
Abstract:
The present study aimed to discover anti-inflammatory molecules from Dendrobium officinale using mass spectrometry-based molecular networking technology and evaluate its therapeutic potential against ulcerative colitis (UC). We employed activity-labeled molecular networking (ALMN) to identify anti-inflammatory molecules from D. officinale extracts. From 3700 metabolite molecules, five top anti-inflammatory molecules were prioritized and isovitexin was further selected to validate its alleviation effect on a mouse model of DSS-induced UC. Mechanistically, isovitexin was found to restore intestinal epithelial barrier function and modulate autophagy via suppression of the PI3K/AKT signaling pathway. Additionally, isovitexin treatment altered the diversity and composition of the gut microbiota, enriching beneficial bacteria and reducing pathogenic bacteria. This was accompanied by changes in short-chain fatty acid levels, particularly the increase of butyric and valeric acids. Our study provided insights into the pharmacological actions of D. officinale and highlighted isovitexin as a novel candidate for UC treatment.
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