title: Tumor-suppressing effects of microRNA-429 in human renal cell carcinoma via the downregulation of Sp1.
abstract: MicroRNA (miR)-429 has been frequently reported to be downregulated in various tumors, including renal cell carcinoma (RCC), nasopharyngeal carcinoma, Ehrlich ascites tumor cells, gastric cancer, non-small cell lung cancer and endometrial endometrioid carcinoma. The present study investigated the effects of miR-429 on human RCC A498 and 786-O cells. Following transfection of cells with miR-429 mimics and scrambled control, MTT, cell migration, cell invasion and luciferase assays were performed. In addition, western blotting was performed in order to assess the expression of specificity protein 1 (Sp1), which was predicted to be a target of miR-429 by TargetScan. The present results revealed that miR-429 inhibited cell proliferation, migration and invasion of 786-O and A498 cells. In addition, the present results demonstrated that miR-429 overexpression downregulated Sp1 protein expression, which provides evidence that miR-429 may directly target Sp1 in RCC. These results suggest that miR-429 may be investigated for use as a predictive marker for early detection of tumor metastasis and blocking RCC cells from becoming invasive.
authors.affiliation: Department of Urology, The Fourth Affiliated Hospital of Nantong Medical College, Yancheng City No. 1 People's Hospital, Yancheng, Jiangsu 224001, P.R. China.
authors.forename: Deyao
authors.initials: D
authors.lastname: Wu
authors.affiliation: Department of Urology, Huai'An First People's Hospital, Nanjing Medical University, Huai'an, Jiangsu 223300, P.R. China.
authors.forename: Xiaobing
authors.initials: X
authors.lastname: Niu
authors.affiliation: Department of Urology, The Fourth Affiliated Hospital of Nantong Medical College, Yancheng City No. 1 People's Hospital, Yancheng, Jiangsu 224001, P.R. China.
authors.forename: Huixing
authors.initials: H
authors.lastname: Pan
authors.affiliation: Department of Urology, The Fourth Affiliated Hospital of Nantong Medical College, Yancheng City No. 1 People's Hospital, Yancheng, Jiangsu 224001, P.R. China.
authors.forename: Yunfeng
authors.initials: Y
authors.lastname: Zhou
authors.affiliation: Department of Urology, The Fourth Affiliated Hospital of Nantong Medical College, Yancheng City No. 1 People's Hospital, Yancheng, Jiangsu 224001, P.R. China.
authors.forename: Zichun
authors.initials: Z
authors.lastname: Zhang
authors.affiliation: Department of Urology, The Fourth Affiliated Hospital of Nantong Medical College, Yancheng City No. 1 People's Hospital, Yancheng, Jiangsu 224001, P.R. China.
authors.forename: Ping
authors.initials: P
authors.lastname: Qu
authors.affiliation: Department of Urology, The Fourth Affiliated Hospital of Nantong Medical College, Yancheng City No. 1 People's Hospital, Yancheng, Jiangsu 224001, P.R. China.
authors.forename: Jian
authors.initials: J
authors.lastname: Zhou
keywords: Sp1 miR-429; renal cell carcinoma