miR-22 regulates cell invasion, migration and proliferation in vitro through inhibiting CD147 expression in tongue squamous cell carcinoma.

Tongue squamous cell carcinoma (TSCC) is the most common type of head and neck squamous cell carcinoma (HNSCC) in China, and its survival rate remains unsatisfactory. miR-22 has been identified as a tumor suppressor in many human cancers, and high expression of CD147 occurs in many tumors. The aim of the present study was to investigate the expression and function of miR-22 in TSCC and its relationship with the expression of CD147. TCA8113 cells were transiently transfected with a miR-22 mimic/inhibitor. Subsequently, a validation with Real-time RT-PCR was performed to analyze the miR-22 expression level, and a CCK-8 proliferation assay and transwell migration and invasion assays were carried out. Cotransfections using As-miR-22/si-CD147 mRNA or a miR-22/CD147 overexpression vector were applied, and we investigated the biological effects on cotranscribed TCA8113 cells. qRT-PCR confirmed that miR-22 or As-miR-22 were successfully transfected into TCA8113 cells. Suppressing miR-22 resulted in a promotion of cell proliferation and motility and an up-regulation of CD147 in TCA8113 cells in vitro. In contrast, increasing miR-22 inhibited cell proliferation and motility and down-regulated CD147. Furthermore, the reduction or overexpression of CD147 can reverse the promoting or suppressive effects of miR-22, respectively. The down-expression of miR-22 can regulate cell growth and motility in TSCC cells, which indicates that miR-22 acts as a tumor suppressor in TSCC. Additionally, CD147 is subsequently up-regulated when miR-22 inhibited. Taken together, the findings of this research defined a novel relationship between the down-regulation of miR-22 and the up-regulation of CD147 and demonstrated that CD147 is a downstream factor of miR-22.

Qiu K ，Huang Z ，Huang Z ，He Z ，You S ... -  《-》

The role of miR-21 in proliferation and invasion capacity of human tongue squamous cell carcinoma in vitro.

Wang Y ，Zhu Y ，Lv P ，Li L ... -  《International Journal of Clinical and Experimental Pathology》

Deregulation of the miR-222-ABCG2 regulatory module in tongue squamous cell carcinoma contributes to chemoresistance and enhanced migratory/invasive potential.

Zhao L ，Ren Y ，Tang H ，Wang W ，He Q ，Sun J ，Zhou X ，Wang A ... -  《Oncotarget》

Interleukin-17A promotes tongue squamous cell carcinoma metastasis through activating miR-23b/versican pathway.

Wei T ，Cong X ，Wang XT ，Xu XJ ，Min SN ，Ye P ，Peng X ，Wu LL ，Yu GY ... -  《Oncotarget》

Cantharidin inhibits cell proliferation and promotes apoptosis in tongue squamous cell carcinoma through suppression of miR-214 and regulation of p53 and Bcl-2/Bax.

Tian X ，Zeng G ，Li X ，Wu Z ，Wang L ... -  《-》