RESUMO
[Summary] The epithelial‐mesenchymal transition (EMT) is a biological process in which epithelial cells are converted into cells with mesenchymal phenotype in specified physiological and pathological conditions. EM T plays a critical role in proper embryonic development ,tissue regeneration ,cancer metastasis and organ fibrosis. EM T can be divided into three subtypes (Ⅰ ,II and Ⅲ ) based on different biological context ,of which type II EMT contribute importantly to the development of organ fibrosis.Renal interstitial fibrosis (RIF) is an important pathological feature of diabetic nephropathy (DN). The understanding of molecular mechanisms of this process tubular EM T may provide a clue to intervene the development of DN through suppressing EM T and reversing RIF.