Abstract
Purpose
To investigate the expression pattern of miR-16 and miR-451 and evaluate their prognostic value in 180 GC patients undergoing surgery.
Methods
In our previous study, a panel of five circulating miRNAs (miR-16, miR-25, miR-92a, miR-451 and miR-486-5p) can be used as a potential biomarker for detecting of early-stage gastric carcinoma (GC). Tissue microarrays were constructed from 180 patients with GC after surgery. MiR-16 and miR-451 expression was detected by miRNA-locked nucleic acid in situ hybridization, and their relationship with clinicopathological parameters and overall survival was analyzed.
Results
MiR-16 expression was decreased in 30.6 % (55/180) of GC, increased in 54.4 % (98/180) and unchanged in 15.0 % (27/180), compared with paracancerous normal tissue (P < 0.001). MiR-451 expression was decreased in 17.8 % (32/180), increased in 62.8 % (113/180) and unchanged in 19.4 % (35/180) of GC, compared with paracancerous normal tissue (P < 0.001).Univariate analysis indicated that low miR-16 and miR-451 expression, tumor stage, tumor status, node status and tumor size were significant negative prognostic predictors for overall survival in patients with GC (P < 0.001, P < 0.001, P = 0.002, P < 0.001 and P = 0.001, respectively). Multivariate regression analysis demonstrated that stage [hazard ratio (HR) 1.80; 95 % confidence interval (CI) 1.0–3.26; P = 0.05], low expression of miR-16 (HR 2.26; 95 % CI 1.51–3.40; P < 0.001) and miR-451 (HR 2.01; 95 % CI 1.36–2.96; P < 0.001) predicted shorter OS, while tumor status (HR 1.59; 95 % CI 0.73–3.48 P = 0.242), lymph node metastasis (HR 1.41; 95 % CI 0.71–2.82; P = 0.326) and tumor size (HR 1.53; 95 % CI 0.92–2.55; P = 0.099) were not. Moreover, patients with both miR-16 and miR-451 high expression have better OS than those with two miRNAs unchanged or low expression in GC tissues. Patients with both miR-16 and miR-451 high have better OS than patients with single miR-451 high expression.
Conclusions
High expression of miR-16 and miR-451 was associated with longer OS in GC patients. Especially patients with miR-16 and miR-451 double high expression will predict better OS. MiR-16 and miR-451 may be used as novel makers to evaluate prognosis and provide a new treatment target in GC.
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Acknowledgments
This study was supported by the National Nature Science Foundation of China (81573220), Jiangsu provincial Six Talent Peaks (WSN107), the Foundation of China Postdoctoral Studies (M2013541699), the Foundation of Jiangsu Province Postdoctoral Studies (1302149C) and the Foundation for Young Scholar in Yangzhou (YZ2014046).
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Ren, C., Chen, H., Han, C. et al. High expression of miR-16 and miR-451 predicating better prognosis in patients with gastric cancer. J Cancer Res Clin Oncol 142, 2489–2496 (2016). https://doi.org/10.1007/s00432-016-2243-z
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DOI: https://doi.org/10.1007/s00432-016-2243-z