Journal
ODONTOLOGY
Volume 108, Issue 4, Pages 553-559Publisher
SPRINGER
DOI: 10.1007/s10266-020-00488-x
Keywords
Oral squamous cell carcinoma; MIR4435-2HG; TGF-beta 1; Proliferation; Migration
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MIR4435-2HG has been characterized as an oncogenic lncRNA in several types of cancer, while its role in oral squamous cell carcinoma (OSCC, a major subtype of oral cancer) has not been characterized. We explored the functionality of MIR4435-2HG in OSCC and investigated its interactions with TGF-beta 1. Blood samples were extracted from OSCC patients (n = 44) and healthy volunteers (n = 38), RT-qPCR, CCK-8, Transwell assays and western blot were performed in this study. The results showed that levels of MIR4435-2HG and TGF-beta 1 in plasma were upregulated in OSCC. Across OSCC plasma samples, TGF-beta 1 and MIR4435-2HG were significantly and positively correlated. Overexpression of MIR4435-2HG resulted in upregulated TGF-beta 1 expression, while exogenous TGF-beta 1 treatment had no effect on the expression of MIR4435-2HG. Overexpression of MIR4435-2HG and exogenous TGF-beta 1 treatment led to promoted, while TGF-beta inhibitor led to inhibited migration, proliferation and invasion of cancer cells. Moreover, TGF-beta inhibitor led to reduced effects of overexpressing MIR4435-2HG. Therefore, MIR4435-2HG regulates the behaviors of OSCC cells by promoting the expression of TGF-beta 1.
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