Increasing evidence has shown that chromatin loops are highly dynamic and tightly correlated with gene function. However, whether these long-range interactions are a cause or consequence of dynamic changes intranscription initiation and how changes of chromatin architecture affect tumorigenesis are still open questions.Supported by the grants from the Epigenetic Mechanisms in Cell Programming and Reprogramming of the Major Research Plan of National Natural Science Foundation of China(NSFC), we studied the r...