Original Article

Gene expression of one important microRNA in blood and tissue samples of oral squamous cell carcinoma


Introduction: Oral Squamous Cell Carcinoma (OSCC) is one of the most common oral malignancies, which accounts for 80-90% of malignant neoplasms of the oral cavity. MicroRNAs (miRNAs) are small RNA molecules that regulate post-transcriptional gene expression by targeting mRNAs. Materials and Methods: In this case-control study, 40 patients with oral squamous cell carcinoma and 40 healthy individuals as control were studied. Blood samples were collected from both groups. Also, 30 cancer tissue samples and 30 healthy tissue samples were prepared and evaluated. RNA was extracted from collected peripheral blood and tissue samples and evaluated for the expression level of miR-494 via real-time PCR technique. P. value values<0.05 were considered statistically significant. Results: The expression level of miR-494 in serum (peripheral blood) of patients with oral squamous cell carcinoma increased by 1.12 fold (P-value<0.001) compared with healthy individuals. Also, the expression level of miR-494 in samples of oral squamous cell carcinoma infected tissue showed a 1.28-fold increase compared to healthy tissue. Conclusion: The results of this study indicate an increase in the expression level (up-regulation) of miR-494 in oral squamous cell carcinoma. This biomarker can be used in screening and early detection of oral squamous cell carcinoma. Keywords: Oral squamous cell carcinoma; Microrna; Real-time pcr; MiR-494.
1. Pires FR, Ramos AB, Oliveira JB, Tavares AS, Luz PS, Santos TC. Oral squamous cell carcinoma: clinicopathological features from 346 cases from a single oral pathology service during an 8-year period. Journal of applied oral science : revista FOB. 2013;21(5):460-7.
2. Kumar M, Nanavati R, Modi TG, Dobariya C. Oral cancer: Etiology and risk factors: A review. Journal of cancer research and therapeutics. 2016;12(2):458-63.
3. Peng Y, Croce CM. The role of MicroRNAs in human cancer. Signal transduction and targeted therapy. 2016;1:15004.
4. Stahlhut Espinosa CE, Slack FJ. The role of microRNAs in cancer. The Yale journal of biology and medicine. 2006;79(3-4):131-40.
5. Zhang B, Pan X, Cobb GP, Anderson TA. microRNAs as oncogenes and tumor suppressors. Developmental biology. 2007;302(1):1-12.
6. Kayani M KM, Malik FA, Faryal R. Role of miRNAs in breast cancer. Asian Pacific journal of cancer prevention : APJCP. 2011;12(12):3175-80.
7. Liu K, Liu S, Zhang W, Jia B, Tan L, Jin Z, et al. miR-494 promotes cell proliferation, migration and invasion, and increased sorafenib resistance in hepatocellular carcinoma by targeting PTEN. Oncology reports. 2015;34(2):1003-10.
8. Pollutri D, Patrizi C, Marinelli S, Giovannini C, Trombetta E, Giannone FA, et al. The epigenetically regulated miR-494 associates with stem-cell phenotype and induces sorafenib resistance in hepatocellular carcinoma. Cell death & disease. 2018;9(1):4.
9. Yang YK, Xi WY, Xi RX, Li JY, Li Q, Gao YE. MicroRNA-494 promotes cervical cancer proliferation through the regulation of PTEN. Oncology reports. 2015;33(5):2393-401.
10. He W, Li Y, Chen X, Lu L, Tang B, Wang Z, et al. miR-494 acts as an anti-oncogene in gastric carcinoma by targeting c-myc. Journal of gastroenterology and hepatology. 2014;29(7):1427-34.
11. Libório-Kimura TN, Jung HM, Chan EK. miR-494 represses HOXA10 expression and inhibits cell proliferation in oral cancer. Oral oncology. 2015;51(2):151-7.
12. Dutta P, Haller E, Sharp A, Nanjundan M. MIR494 reduces renal cancer cell survival coinciding with increased lipid droplets and mitochondrial changes. BMC cancer. 2016;16:33.
13. Mitchell PS, Parkin RK, Kroh EM, Fritz BR, Wyman SK, Pogosova-Agadjanyan EL, et al. Circulating microRNAs as stable blood-based markers for cancer detection. Proceedings of the National Academy of Sciences of the United States of America. 2008;105(30):10513-8.
14. Ries J, Vairaktaris E, Kintopp R, Baran C, Neukam FW, Nkenke E. Alterations in miRNA expression patterns in whole blood of OSCC patients. In vivo (Athens, Greece). 2014;28(5):851-61.
15. Ghosh RD, Pattatheyil A, Roychoudhury S. Functional Landscape of Dysregulated MicroRNAs in Oral Squamous Cell Carcinoma: Clinical Implications. Frontiers in oncology. 2020;10:619.
16. Shah MY, Ferrajoli A, Sood AK, Lopez-Berestein G, Calin GA. microRNA Therapeutics in Cancer - An Emerging Concept. EBioMedicine. 2016;12:34-42.
17. Corsini LR, Bronte G, Terrasi M, Amodeo V, Fanale D, Fiorentino E, et al. The role of microRNAs in cancer: diagnostic and prognostic biomarkers and targets of therapies. Expert opinion on therapeutic targets. 2012;16 Suppl 2:S103-9.
18. Wang J, Chen H, Liao Y, Chen N, Liu T, Zhang H, et al. Expression and clinical evidence of miR-494 and PTEN in non-small cell lung cancer. Tumour Biol. 2015;36(9):6965-72.
19. Zhang Y, Guo L, Li Y, Feng GH, Teng F, Li W, et al. MicroRNA-494 promotes cancer progression and targets adenomatous polyposis coli in colorectal cancer. Molecular cancer. 2018;17(1):1.
20. Macedo T, Silva-Oliveira RJ, Silva VAO, Vidal DO, Evangelista AF, Marques MMC. Overexpression of mir-183 and mir-494 promotes proliferation and migration in human breast cancer cell lines. Oncol Lett. 2017;14(1):1054-60.
21. Tian C, Zheng G, Zhuang H, Li X, Hu D, Zhu L, et al. MicroRNA-494 Activation Suppresses Bone Marrow Stromal Cell-Mediated Drug Resistance in Acute Myeloid Leukemia Cells. Journal of cellular physiology. 2017;232(6):1387-95.
22. Cheng L, Kong B, Zhao Y, Jiang J. miR-494 inhibits cervical cancer cell proliferation through upregulation of SOCS6 expression. Oncol Lett. 2018;15(3):3075-80.
23. Yang Y, Tao X, Li CB, Wang CM. MicroRNA-494 acts as a tumor suppressor in pancreatic cancer, inhibiting epithelial-mesenchymal transition, migration and invasion by binding to SDC1. International journal of oncology. 2018;53(3):1204-14.
IssueVol 7, No 3 (Summer 2020) QRcode
SectionOriginal Article(s)
DOI https://doi.org/10.18502/jcr.v7i3.5283
Oral squamous cell carcinoma; Microrna; Real-time pcr; MiR-494.

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How to Cite
Emami N, Bahrami N, Mirzaei M, Mohamadnia A. Gene expression of one important microRNA in blood and tissue samples of oral squamous cell carcinoma. J Craniomaxillofac Res. 2020;7(3):132-137.