Hepatocellular carcinoma (HCC) is a worldwide malignance and displays marked vascular abnormalities and active metastasis. MicroRNAs (miRNAs) have been shown to play important roles in regulating tumor properties in cancer, however, whether miR-497 contributes to HCC angiogenesis or metastasis remains unclear. In this study, we found that miR-497 was significantly down-regulated in HCC tissue samples and cell lines. Gain-of-function and loss-of-function studies revealed that miR-497 could repress both the pro-angiogenic and metastatic ability of HCC cells. Subsequent investigations disclosed that miR-497 directly inhibited the 3'-untranslated regions (UTRs) of vascular endothelial growth factor A (VEGFA) and astrocyte elevated gene-1 (AEG-1). Furthermore, overexpression of these targets antagonized the function of miR-497. Based on nude mouse models, we demonstrated that overexpression of miR-497 significantly repressed microvessel densities in xenograft tumors and reduced pulmonary metastasis. In conclusion, our findings indicate that miR-497 downregulation contributes to angiogenesis and metastasis in HCC.
基金:
National Natural Science Foundation of China [81472832, 81302112, 81372663]
第一作者单位:[1]Huazhong Univ Sci & Technol,Inst Liver Dis,Tongji Hosp,Tongji Med Coll,Wuhan 430030,Peoples R China[2]Huazhong Univ Sci & Technol,Dept Emergency Med,Tongji Hosp,Tongji Med Coll,Wuhan 430030,Peoples R China
通讯作者:
推荐引用方式(GB/T 7714):
Yan Jing-Jun,Zhang Yu-Nan,Liao Jia-Zhi,et al.MiR-497 suppresses angiogenesis and metastasis of hepatocellular carcinoma by inhibiting VEGFA and AEG-1[J].ONCOTARGET.2015,6(30):29527-29542.doi:10.18632/oncotarget.5012.
APA:
Yan, Jing-Jun,Zhang, Yu-Nan,Liao, Jia-Zhi,Ke, Kun-peng,Chang, Ying...&He, Xing-Xing.(2015).MiR-497 suppresses angiogenesis and metastasis of hepatocellular carcinoma by inhibiting VEGFA and AEG-1.ONCOTARGET,6,(30)
MLA:
Yan, Jing-Jun,et al."MiR-497 suppresses angiogenesis and metastasis of hepatocellular carcinoma by inhibiting VEGFA and AEG-1".ONCOTARGET 6..30(2015):29527-29542