Abstract
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-β1. 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-β1 in plasma were upregulated in OSCC. Across OSCC plasma samples, TGF-β1 and MIR4435-2HG were significantly and positively correlated. Overexpression of MIR4435-2HG resulted in upregulated TGF-β1 expression, while exogenous TGF-β1 treatment had no effect on the expression of MIR4435-2HG. Overexpression of MIR4435-2HG and exogenous TGF-β1 treatment led to promoted, while TGF-β inhibitor led to inhibited migration, proliferation and invasion of cancer cells. Moreover, TGF-β inhibitor led to reduced effects of overexpressing MIR4435-2HG. Therefore, MIR4435-2HG regulates the behaviors of OSCC cells by promoting the expression of TGF-β1.
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HS and BS: experiments work, data analysis and writing the manuscript. YY, XC, LB and LD: lab work, clinical research and manuscript preparation. LZ: research design, manuscript review and clinical research. Final manuscript has been approved by all authors.
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Shen, H., Sun, B., Yang, Y. et al. MIR4435-2HG regulates cancer cell behaviors in oral squamous cell carcinoma cell growth by upregulating TGF-β1. Odontology 108, 553–559 (2020). https://doi.org/10.1007/s10266-020-00488-x
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DOI: https://doi.org/10.1007/s10266-020-00488-x