Frontiers in immunology
Gegen Qinlian decoction alleviates ulcerative colitis by remodeling the gut microbiota-bile acid axis and inhibiting NLRP3-mediated pyroptosis
Por Wang H, Ou G, Xu H y 7 más.
Contenido en inglés
Resumen
Background
Gegen Qinlian Decoction (GQD) is used to treat intestinal disorders, but its mechanism in ulcerative colitis (UC) induced by combined high-fat diet (HFD) and dextran sulfate sodium (DSS) exposure remains unclear.
Methods
A UC mouse model was induced by HFD plus DSS. GQD constituents were identified by UPLC-MS/MS. Colonic pathology and barrier integrity were assessed by H&E and immunofluorescence. Gut microbiota and bile acids were analyzed by 16S rRNA gene sequencing and targeted metabolomics. Transcriptomics, ELISA, Western blotting, fecal microbiota transplantation (FMT), and molecular docking were used to investigate mechanisms. LPS-stimulated Caco-2 cells were treated with 20 or 50 μM DCA; cell viability, NLRP3 inflammasome-related gene expression, and ZO-1/Occludin immunofluorescence were evaluated.