“…In addition, local gene delivery of IL-22 vector significantly enhanced STAT3 activation in the CECs of proximal colon (the injected site) but not distal colon (noninjected site) as defined by the levels of phospho-STAT3 ( Figure 3B and data not shown). Of note, IL-22 gene delivery led to "prompt" attenuation of colitis at the injection but not the noninjection site, as indicated by a significant reduction in the colonic diameter within 2 weeks after IL-22 gene delivery ( Goblet cell depletion, which is prominently observed in UC in comparison with CD (12,29,30), was observed in the diseased colon of TCRαKO mice treated with mock vector ( Figure 3G). Interestingly, IL-22 gene delivery induced a significant restoration of goblet cell expression in TCRαKO mice ( Figure 3, G and H).…”