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Article type: Research Article
Authors: Huang, Tonghai* | Wang, Guangsuo | Yang, Lin | Peng, Bin | Wen, Yuxin | Ding, Guanggui | Wang, Zheng
Affiliations: Department of Thoracic Surgery, The Second Clinical Medical College (Shenzhen People’s Hospital), Jinan University, Shenzhen 518020, Guangdong, China
Correspondence: [*] Corresponding author: Tonghai Huang, Department of Thoracic Surgery, The Second Clinical Medical College (Shenzhen People’s Hospital), No. 1017, East Gate Rd, Shenzhen 518020, Guangdong, China. E-mail: tonghaihuang@aliyun.com.
Abstract: BACKGROUND:Non-small cell lung cancer (NSCLC) is the main type of lung cancer. While miR-186 is significantly reduced in lung cancer tissues and cells, its role in NSCLC has not been completely elucidated. MATERIAL AND METHODS:We used qRT-PCR and western blot methods to investigate the levels of miR-186 and YY1 in 21 pairs of NSCLC tissues. Dual luciferase reporter gene assays were performed to detect whether miR-186 directly targets YY1. Next, the roles of miR-186 and its target gene (YY1) in determining the proliferation, apoptosis and migration capabilities of selected cell lines (A549 and HCC827) were investigated by using miR-186 mimics or YY1 siRNA. RESULTS:Our results showed that miR-186 was downregulated and YYI was upregulated in NSCLC tissue, and miR-186 expression was negatively associated with YY1. Similarly, miR-186 was also downregulated and YY1 expression also was upregulated in both A549 and HCC827 cells; furthermore, miR-186 was found to directly target YY1. Cell proliferation, invasion, and migration, as well as apoptosis induction were more strongly inhibited by YY1 siRNA than by miR-186. CONCLUSION:Our results suggest that miR-186 and its target gene (YY1) could possibly serve as new prognostic biomarkers and therapeutic targets for treating NSCLC in humans.
Keywords: miR-186, YY1, cell proliferation, apoptosis, migration and invasion, non-small cell lung cancer
DOI: 10.3233/CBM-170670
Journal: Cancer Biomarkers, vol. 21, no. 1, pp. 221-228, 2018
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