Mona SARAEI, Ata GARAJEI, Faranak JAMSHIDIAN

miR-7111-5p and miR6870-5p may be Potential Biomarkers for Oral Squamous Cell Carcinoma

OBJECTIVE MicroRNAs (miRs) are small, non-coding RNAs that are involved in tumor development and progression in multiple cancers with the action as oncomiRs or tumor suppressor miRs. Therefore, miRNAs have become potential biomarkers in the diagnosis and treatment of cancer. The previous studies have revealed that miR7111-5p and miR6870-5p are abnormally expressed in various types of cancer but in oral squamous cell carcinoma (OSCC) has not been elucidated. The main objective of our study was to evaluate the expression alternations of miR7111-5p and miR6870-5p as well as serum response factor (SRF) in OSCC tissues compared with adjacent normal oral epithelial tissues. METHODS SRF was identified as a potential target gene of miR7111-5p and miR6870-5p using the TargetScan, Mirwalk, and Mirdb miRNA-target prediction tools. SRF, miR7111-5p, and miR6870-5p expression levels were examined by RT-qPCR in OSCC compared with normal tissues. RESULTS Our results showed that miR7111-5p and miR6870-5p were significantly downregulated in 30 pairs of OSCC tissue samples (p

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