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MIR4435-2HG regulates cancer cell behaviors in oral squamous cell carcinoma cell growth by upregulating TGF-β1

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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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Correspondence to Luyue Zhang.

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This study passed the review of Ethics Committee of PLA Rocket Force General Hospital. All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.

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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

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