Research Project
Grant-in-Aid for Scientific Research (C)
Background and Aims: Although CD30 has long been recognized as an important marker on many lymphomas of diverse origin and as activation molecule on B and T cells, its primary function has remained obscure. A soluble form of CD30 (sCD30) is detectable in serum as a consequence of shedding of CD30 in some disease conditions. This study investigates the role of CD30L/CD30 signals in intestinal mucosal damage.Methods: Levels of sCD30 in sera obtained from Ulcerative colitis (UC) and Crohn's disease (CD) patients and healthy donors were assessed. CD30 expression was determined by immunohistochemistry. An enteritis models of mice, induced by anti-CD3 was studied in wild type (WT) BALB/c mice and in CD30L knockout mice in the BALB/c background (CD30LKO).Results: Increased levels of sCD30 were observed in both UC and CD patients. The levels of sCD30 were correlated with the disease activity both in UC and CD. CD30 positive cells were observed at the inflammation site of UC and CD. In murine models of enteritis, histological intestinal damage were significantly reduced in CD30LKO mice and associated with differences in cytokine levels. Moreover, blocking of CD30/CD30L by CD30Ig signals resulted reduction of inflammation.Conclusions: Detection of CD30 expressing cells at the inflammation site and association of increased sCD30 levels with disease activity suggest that CD30/CD30L signals play an important role in disease pathogenesis of UC and CD. CD30 acts as an accelerator of enteritis in murine diease models. Successful blockade of enteritis by CD30Ig suggests a potential tool for future therapy for these diseases.
All 2006
All Presentation (4 results)
