Abstract
Objective: This study was to investigate the clinical significance of miR-551b-5p and SETD2 in thyroid cancers (TC) and their effects on the biological function of TC cells.
Methods: The expression level of miR-551b-5p and SETD2 in tumor/nontumor tissues and TC cell lines was measured by quantitative real-time polymerase chain reaction (RT-qPCR). Subsequently, the relationship between miR-551b-5p or SETD2 expression and the clinicopathological feature was detected by Chi-square analysis. Kaplan-Meier and multivariate Cox regression analyses were used to assess their prognostic values. Finally, the regulatory effects of miR-551b-5p and SETD2 on the proliferation, migration and invasion ability of TC cells were detected by CCK-8 and Transwell assays.
Results: Compared with non-tumor groups, the expression of miR-551b-5p was significantly increased in patients' tissues and TC cell lines, while SETD2 mRNA expression was decreased. Patients with up-regulated miR-551b-5p or downregulated SETD2 mRNA in TC showed more positive lymph node metastasis and advanced TNM stage. High miR-551b-5p expression level and low SETD2 mRNA level were related to poor survival rate. miR-551b-5p and SETD2 might be potential prognostic biomarkers for TC. miR-551b-5p knockdown can inhibit cell proliferation, migration and invasion by targeting SETD2.
Conclusion: miR-551b-5p and SETD2 may be valuable prognostic biomarkers and new therapeutic targets for TC.
Keywords: miR-551b-5p, SETD2, prognosis, thyroid carcinoma, cell lines, CCK-8.
[http://dx.doi.org/10.1016/S0140-6736(16)30172-6] [PMID: 27240885]
[http://dx.doi.org/10.1016/j.ecl.2018.10.002] [PMID: 30717905]
[http://dx.doi.org/10.1038/s41574-020-00448-z] [PMID: 33339988]
[http://dx.doi.org/10.1016/S2213-8587(20)30372-7] [PMID: 33220765]
[http://dx.doi.org/10.17392/1413-21]
[http://dx.doi.org/10.1007/s12020-020-02207-6] [PMID: 32002755]
[http://dx.doi.org/10.3389/fendo.2020.00102] [PMID: 32231639]
[http://dx.doi.org/10.1055/a-1089-7870]
[http://dx.doi.org/10.1159/000486422]
[http://dx.doi.org/10.1186/1756-6614-4-S1-S1]
[http://dx.doi.org/10.2174/1568026619666181120121830] [PMID: 30457051]
[http://dx.doi.org/10.1016/j.cancergen.2019.08.006] [PMID: 31472323]
[http://dx.doi.org/10.1002/jcp.27486] [PMID: 30471116]
[http://dx.doi.org/10.1016/j.canlet.2020.08.021] [PMID: 32949678]
[http://dx.doi.org/10.1016/j.jaci.2017.08.034] [PMID: 29074454]
[http://dx.doi.org/10.7150/ijms.29935] [PMID: 30911279]
[http://dx.doi.org/10.1002/ijc.32622] [PMID: 31403184]
[http://dx.doi.org/10.2741/4834] [PMID: 31585917]
[http://dx.doi.org/10.3390/cancers12071892] [PMID: 32674319]
[http://dx.doi.org/10.7717/peerj.2119] [PMID: 27350898]
[http://dx.doi.org/10.18632/oncotarget.12832] [PMID: 27793030]
[PMID: 32527354]
[http://dx.doi.org/10.1016/j.pan.2015.05.475]
[http://dx.doi.org/10.1210/jc.2013-1214] [PMID: 23783103]
[http://dx.doi.org/10.1007/s12032-016-0842-9] [PMID: 27743201]
[http://dx.doi.org/10.18632/oncotarget.9368] [PMID: 27191891]
[http://dx.doi.org/10.7150/jca.38391] [PMID: 32231741]
[http://dx.doi.org/10.1007/s10549-021-06181-z] [PMID: 33844099]
[http://dx.doi.org/10.1016/j.bbrc.2018.03.022] [PMID: 29522714]
[http://dx.doi.org/10.1586/14737159.2015.1068122] [PMID: 26166446]
[http://dx.doi.org/10.3390/cancers11050735] [PMID: 31137914]