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| Content Provider | PubMed Central |
|---|---|
| Author | Hu, An Huang, Jing-juan Xu, Wei-hua Jin, Xiao-jie Li, Ji-ping Tang, Yuan-jia Huang, Xin-fang Cui, Hui-juan Sun, Guang-bin |
| Copyright Year | 2014 |
| Abstract | The dismal outcome of laryngeal squamous cell carcinoma (SCC) patients highlights the need for novel prognostic biomarkers. The involvement of microRNAs in cancer and their potential as biomarkers of diagnosis and prognosis are becoming increasingly appreciated. We sought to identify microRNAs that exhibit altered expression in laryngeal SCC and to determine whether microRNA (miRNA) expression is predictive of disease progression and/or patient survival. The expression of two miRNAs, miR-21 and miR-375, was evaluated using total RNA isolated from freshly-frozen primary tumors and non-cancerous laryngeal squamous epithelial tissues and quantitative real-time polymerase chain reaction (qRT-PCR) analysis. We further analyzed the association between the expression of miRNAs and the clinicopathological features. A marked difference in the microRNA expression pattern was observed between tumors and non-cancerous tissue. MiR-21 and miR-375 were expressed at higher and lower levels, respectively, in the laryngeal SCC samples, compared to the normal samples (p < 0.01 and p < 0.001, respectively). There was no correlation between characteristics such as age, sex, clinical stage, and alcohol use, and the expression level of mir-21. The relative expression of mir-375 in laryngeal SCC was shown to be associated with localization of the tumor in these patients (p = 0.037) and with alcohol use (p < 0.05). Patients with high miR-21 or low miR-375 expression in tumor tissues had poorer prognoses compared to patients with lower miR-21 or higher miR-375 expression. Furthermore, the miR-21/miR-375 expression ratio was highly sensitive (0.94) and specific (0.94) for disease prediction. These data suggest that the pattern of microRNA expression in primary laryngeal SCC tissues is reflective of the disease status and that miR-21 and miR-375 expression levels, in particular, may serve as potential biomarkers with applications in the clinical setting. |
| Ending Page | 613 |
| Starting Page | 604 |
| File Format | |
| ISSN | 19438141 |
| e-ISSN | 19438141 |
| Journal | American Journal of Translational Research |
| Issue Number | 5 |
| Volume Number | 6 |
| Language | English |
| Publisher | e-Century Publishing Corporation |
| Publisher Date | 2014-10-11 |
| Access Restriction | Open |
| Rights Holder | e-Century Publishing Corporation |
| Subject Keyword | Research in Higher Education |
| Content Type | Text |
| Resource Type | Article |
| Subject | Clinical Biochemistry Cancer Research Molecular Medicine |
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