IL7 and inflammatory bowel disease: At present, several studies have shown that MSC-EXOs/exosome components have potential functions in the development of IBD and can serve as potential targets for the diagnosis and treatment of IBD. In a model of IBD induced by DSS, hUC-MSC-EXOs treatment decreased the infiltration of macrophages in colon tissue and inhibited the expression of IL-7 (121).