Journal
CANCER MEDICINE
Volume 8, Issue 15, Pages 6756-6767Publisher
WILEY
DOI: 10.1002/cam4.2511
Keywords
cell viability; hepatocellular carcinoma; invasion; microRNA-106b-5p; overall survival; recurrence-free survival
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Funding
- Natural Science Foundation of Autonomous Region of China [2017D01C306]
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Background and Objectives The roles of microRNA(miR)-106b-5p in hepatocellular carcinoma (HCC) remain unclear. We aimed here to investigate the clinical significance of miR-106b-5p expression in HCC and its underlying mechanisms. Methods Expression levels of miR-106b-5p in 108 HCC clinical samples by quantitative real-time reverse transcription PCR. Associations of miR-106b-5p expression with various clinicopathological features and patients' prognosis were evaluated by Chi-square test, Kaplan-Meier, and Cox proportional regression analyses, respectively. The target gene of miR-106b-5p and their functions in HCC cells were investigated by luciferase reporter, CCK-8, and Transwell Matrigel invasion assays. Results miR-106b-5p expression was markedly higher in HCC tissues than in noncancerous adjacent liver tissues (P < .001). miR-106b-5p upregulation was significantly associated with advanced TNM stage (P = .02), short recurrence-free (P = .005), and overall (P = .001) survivals. Importantly, miR-106b-5p expression was an independent predictor of poor prognosis (P < .05). RUNX3 was identified as a direct target gene of miR-106b-5p in HCC cells. Functionally, miR-106b-5p upregulation promoted the viability and invasion of HCC cells, while enforced RUNX3 expression reversed the oncogenic effects of miR-106b-5p overexpression. Conclusions miR-106b-5p may serve as a potent prognostic marker for tumor recurrence and survival of HCC patients. miR-106b-5p may exert an oncogenic role in HCC via regulating its target gene RUNX3.
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