miR-335 inhibits migration and invasion of human osteosarcoma cell line MG-63 by targeting ROCK1
10.3969/j.issn.1007-3969.2014.11.001
- VernacularTitle:miR-335靶向Rho相关卷曲螺旋形成蛋白激酶1抑制人骨肉瘤细胞MG-63侵袭转移的实验研究
- Author:
Yong WANG
;
Kefeng WANG
;
Wei ZHAO
- Publication Type:Journal Article
- Keywords:
miR-335;
Rho associated coiled-coil forming protein kinase;
MG-63;
Migration and Invasion
- From:China Oncology
2014;(11):801-807
- CountryChina
- Language:Chinese
-
Abstract:
Background and purpose:MicroRNAs are endogenous small RNAs and involved in target gene regulation in post-transcription level. As a tumor suppressor, microRNA-335 (miR-335) was participated in the occurrence and progression in many types of human tumors. This study aimed at investigating whether miR-335 can regulate cell migration and invasion by negative targeting Rho associated coiled-coil forming protein kinase (ROCK1) in human osteosarcoma cell line MG-63.Methods:The speciifc binding ability of miR-335 to ROCK1 3’-untranslated region (UTR) was theoretically predicted and detected by the luciferase reporter gene assay. Western blot and real-time PCR were used to evaluate the effect of miR-335 on the expression of ROCK1 at protein and mRNA levels. Cell migration and invasion assays were performed by transwell chambers in MG-63 cells intervened by over-expression of miR-335 and knockdown of ROCK1.Results:Luciferase reporter gene assay showed that miR-335 could target ROCK1 3’-UTR. Lower miR-335 but higher ROCK1 was expressed in MG-63 cells. The results of Western blot showed that ROCK1 protein expression was decreased by transfection of miR-335 mimic or siROCK1. Transwell chambers results showed decreased cells invading through the substrate membrane after over-expression of miR-335 or knockdown ofROCK1 gene.Conclusion:miR-335 inhibits the migration and invasion ability of MG-63 human osteosarcoma cell line, which may through targeting ROCK1 3’-UTR and subsequent down-regulating ROCK1 expression.
