Microbiota-Taurine Pathway Links Dietary Fiber to Mucosal Healing.

Alginate enhances colitis recovery in mice by activating a microbiota-dependent taurine pathway linked to epithelial repair.

• Why it matters: Understanding how dietary fibers promote mucosal healing could lead to targeted therapies for inflammatory bowel diseases like ulcerative colitis, addressing a significant clinical need.
• What they did: The study screened fibers in murine colitis models, assessed microbiota and metabolite changes, and used genetic and organoid models to explore mechanisms, including a clinical trial with UC patients receiving fecal microbiota transplantation and alginate.
• The result: Alginate improved colitis recovery in mice through microbiota-dependent increases in intestinal taurine and epithelial Cyp2c55 expression; in UC patients, alginate caused biological changes such as increased fecal taurine and colonic CYP2C18, suggesting potential for microbiota-targeted therapies.