Tryptophan Metabolism, Regulatory T Cells, and Inflammatory Bowel Disease: A Mini Review

Figure 4

Overview of the relationship among Trp metabolism, Tregs, and IBD. DSS: dextran sodium sulfate; Treg: regulatory T cell; IBD: inflammatory bowel disease; Trp: tryptophan; Kyn: kynurenine; IDO: indoleamine 2,3-dioxygenase; AhR: aryl hydrocarbon receptor.