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题目:: C/EBPα-induced miR-100 expression suppresses tumor metastasis and growth by targeting ZBTB7A in gastric cancer.
作者:: Shi(Duan-Bo),Wang(Ya-Wen),Xing(Ai-Yan),Gao(Ji-Wei),Zhang(Hui),Guo(Xiang-Yu),Gao(Peng)
状态:: 发布时间2015-10-31 , 更新时间 2015-10-31
期刊:: Cancer Lett
摘要:: MicroRNAs have been reported to play key roles in various human cancers, including gastric cancer. However, understanding of the expression of miR-100 and its regulatory mechanisms in human gastric cancer remains elusive. In this study, we reveal that miR-100 is downregulated in gastric cancer samples and gastric cancer cell lines. Furthermore, lower miR-100 expression was found in primary gastric cancer samples with lymphatic metastasis compared to those without lymphatic metastasis. Overexpression of miR-100 suppressed tumor growth in vivo and inhibited gastric cancer invasion and metastasis in vitro and in vivo. Furthermore, we demonstrated that miR-100 reduced gastric cancer aggressiveness by directly targeting ZBTB7A. Knockdown of ZBTB7A by siRNA disrupted gastric cancer progression by impairing tumor invasion and metastasis. High expression of ZBTB7A was significantly correlated with poorer prognosis in gastric cancer patients. Our results also showed that the transcription factor CCAAT/enhancer-binding protein alpha (C/EBPα) could induce the expression of miR-100 by binding to the putative promoter region of miR-100. This study demonstrated that miR-100 could be induced by C/EBPα and may act as a tumor suppressor gene by inhibiting ZBTB7A.
语言:: eng
DOI:: 10.1016/j.canlet.2015.08.029

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