Potential role of Th17 cells in the pathogenesis of inflammatory bowel disease |
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Authors: | Zhan-Ju Liu Praveen K Yadav Jing-Ling Su Jun-Shan Wang Ke Fei |
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Institution: | Zhan-Ju Liu, Praveen K Yadav, Jing-Ling Su, Jun-Shan Wang, Department of Gastroenterology, Shanghai Tenth People’s Hospital, Tongji University, Shanghai 200072, ChinaKe Fei, Department of Thoracic Surgery, Shanghai Tenth People’s Hospital, Tongji University, Shanghai 200072, China |
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Abstract: | The etiopathology of inflammatory bowel disease (IBD) remains elusive. Accumulating evidence suggests that the abnormality of innate and adaptive immunity responses plays an important role in intestinal inflammation. IBD including Crohn's disease (CD) and ulcerative colitis (UC) is a chronic inflammatory disease of the gastrointestinal tract, which is implicated in an inappropriate and overactive mucosal immune response to luminal flora. Traditionally, CD is regarded as a Th1mediated inflammatory disorder while UC is regarded as a Th2like disease. Recently, Th17 cells were identified as a new subset of T helper cells unrelated to Th1 or Th2 cells, and several cytokines e.g. interleukin (IL)-21, IL-23] are involved in regulating their activation and differentiation. They not only play an important role in host defense against extracellular pathogens, but are also associated with the development of autoimmunity and inflammatory response such as IBD. The identification of Th17 cells helps us to explain some of the anomalies seen in the Th1/Th2 axis and has broadened our understanding of the immunopathological effects of Th17 cells in the development of IBD. |
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Keywords: | Crohn's disease Inflammatory bowel disease Interleukin17 Interleukin23 Th17 cells Ulcerative colitis |
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