Abstract
Inflammatory bowel diseases (IBD) are characterized by chronic inflammation and damage of colonocytes with etiology of genetic, epigenetic and environmental factors. MicroRNA-223 (miR-223) has been found to be increased in both IBD patients and animal colitis models. However, contentious opinions relevant to the roles of miR-223 in IBD have been reported. Notwithstading that most studies have described that miR-223 has anti-inflammatory effects, several reports have progressed a pro-inflammatory view. In this review, we summarise both the anti-inflammatory and pro-inflammatory effects of miR-223 on key molecules in inflammatory responses in both animal models and in patients diagnosed with IBD and objectively discuss the possible basis for the discrepancies.
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