Gut lymphatic drainage and lipid transport linked to tertiary lymphoid structures in IBD

An ImmuneZoom expert lecture argues that intestinal lipid transport and lymphatic drainage shape tertiary lymphoid structures (TLS) in inflammatory bowel disease. The speaker presents evidence that deleting B-cell lymphotoxin alpha/beta eliminates TLS, and that TLS formation coincides with loss of lymphatic valve identity and immune cell leakage from lymphatics in Crohn's disease. On the therapeutic side, LXR-targeted drugs driving intestinal HDL biosynthesis genes reduced fibrosis in mice, and this effect disappeared when intestinal HDL was knocked out, pointing to a functional role for intestinal HDL in fibrosis. The lecture, running 58 minutes, was delivered on October 17, 2026. Open questions include how these mouse and mechanistic findings translate to human IBD and whether targeting lipid transport or lymphatic drainage can modify TLS formation or fibrosis in patients.

Written by a model from the reports · updated 2 hours ago