Title |
MicroRNA-1 (miR-1) inhibits gastric cancer cell proliferation and migration by targeting MET
|
---|---|
Published in |
Tumor Biology, April 2015
|
DOI | 10.1007/s13277-015-3358-6 |
Pubmed ID | |
Authors |
Chao Han, Yubing Zhou, Qi An, Feng Li, Duolu Li, Xiaojian Zhang, Zujing Yu, Lili Zheng, Zhenfeng Duan, Quancheng Kan |
Abstract |
MicroRNAs (miRs) are short endogenous non-coding RNAs that act as posttranscriptional regulatory factors of gene expression. Downregulation of miR-1 has been reported in gastric cancer; however, the mechanisms underlying its functions via target genes in gastric cancer remain largely unknown. The purpose of this study was to investigate the mechanism by which miR-1 inhibits gastric cancer cell proliferation and migration. The effects of miR-1 on gastric cancer cell proliferation and migration were determined by MTT and wound-healing assays. Cell protein expression of the miR-1 target gene MET was analyzed by Western blotting. Finally, MET expression was evaluated by immunohistochemistry in a stomach tumor tissue microarray (TMA). Ectopic expression of miR-1 inhibited proliferation and migration in both AGS and SGC-7901 gastric cancer cell lines. miR-1 directly targets the MET gene and downregulates its expression. MET siRNA also inhibited proliferation and migration in both cell lines. Immunohistochemistry revealed significantly higher MET expression levels in gastric cancer tissues compared with matched adjacent non-cancer tissues. These findings indicate that the miR-1/MET pathway is a potential therapeutic target due to its crucial role in gastric cancer cell proliferation and migration. |
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