MiRNA-218, a new regulator of HMGB1, suppresses cell migration and invasion in non-small cell lung cancer
Open Access
- 17 November 2013
- journal article
- research article
- Published by China Science Publishing & Media Ltd. in Acta Biochimica et Biophysica Sinica
- Vol. 45 (12), 1055-1061
- https://doi.org/10.1093/abbs/gmt109
Abstract
MicroRNAs (miRNAs) function as negative regulators of gene expression involved in cancer metastasis. The aim of this study is to investigate the potential roles of miR-218 in non-small cell lung cancer and validate its regulation mechanism. Functional studies showed that miR-218 overexpression inhibited cell migration and invasion, but had no effect on cell viability. Enhanced green fluorescent protein reporter assay, real-time polymerase chain reaction and western blot analysis confirmed that miR-218 suppressed the expression of high mobility group box-1 (HMGB1) by directly targeting its 3′-untranslated region. Accordingly, silencing of HMGB1 accorded with the effects of miR-218 on cell migration and invasion, and overexpression of HMGB1 can restore cell migration and invasion which were reduced by miR-218. In conclusion, these findings demonstrate that miR-218 functions as a tumor suppressor in lung cancer. Furthermore, miR-218 may act as a potential therapeutic biomarker for metastatic lung cancer patients.Keywords
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