Endocrine self and gut non-self intersect in the pancreatic lymph nodes.

ABSTRACT: The autoimmune cascade that culminates in diabetes initiates within pancreatic lymph nodes (PLNs). Here, we show that developmentally controlled lymphogenesis establishes a preferential trafficking route from the gut to the PLN, where T cells can be activated by antigens drained from the peritoneum and the gastrointestinal tract. Furthermore, intestinal stress modifies the presentation of pancreatic self-antigens in PLNs. The convergence of endocrine and intestinal contents within PLNs has significant implications for type 1 diabetes and may help to explain the link between autoimmune pathogenesis and environmental provocation.

SUBMITTER: Turley SJ 

PROVIDER: S-EPMC1308925 | biostudies-literature | 2005 Dec

REPOSITORIES: biostudies-literature